Academic literature on the topic 'Omega-6/omega-3 ratio value'
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Journal articles on the topic "Omega-6/omega-3 ratio value"
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Mustikaningrum, Fitriana, Anindya Rahmaningtyas, Puput F. E. Ningtyas, Nur Lathifah Mardiyati, and Tengku Farizan Izzi Binti Che Ku Jusoh. "The relationship between the ratio of omega-6 and omega-3 consumption with caesarean section." Jurnal Gizi dan Dietetik Indonesia (Indonesian Journal of Nutrition and Dietetics) 12, no. 4 (2024): 242. http://dx.doi.org/10.21927/ijnd.2024.12(4).242-251.
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<p><strong><em>Background</em></strong><em> : Many of research explained that Omega-3 and Omega-6 consumption during pregnancy affect delivery method. Omega-3 and omega-5 affect uterus contraction. The prevalence of caesarean section in 154 countries were 21.1%, and 43% in Primary health care. Caesarean section has a risk to get complication during and after parturition also could increase maternity cost. </em></p><p><strong><em>Objectives:</em></strong><em> The aim of study was to determine the relationship between ratio omega-6: omega-3 intake and the incidence of cesarean section in postpartum mothers in the Bendosari Primary Health Care area. </em></p><p><strong><em>Method</em></strong><em>: This was observational study with cross sectional approach. The subjects of the study were 66 postpartum mothers who met the inclusion and exclusion criteria and were selected using the purposive sampling method. Data of omega-3 and omega-6 intake during the 2-3rd semester tri pregnancy period were obtained by interview method using the Semi Quantitative Food Frequency (SQ_FFQ) form. The relationship between omega-3 intake and caesarean section was analyzed with the Chi-Square test (P&lt;0,05), while Fisher’s exact test was used to analyzed the relationship between intake ratio of omega-6 and omega-3 (P&lt;0,05). </em></p><p><strong><em>Result: </em></strong><em>There was a relationship between omega-3 intake and ratio between omega-6: omega-3 intake with caesarean section with P-value 0.03. The mother who consume high omega-3 had prevalence ratio 3,6 times higher to have normal delivery compared than mother who had low consumption of omega-3. Moreover, mother who had sufficient ratio of omega 6: omega 3 in their diet had prevalence ratio 9 times higher to have normal delivery compared with mother who had high ratio of omega 6: omega 3in the diet during pregnancy. Pregnant women suggests to consume high omega-3 and sufficient ratio omega-6:omega-3 to prevent risk of caesarean section</em></p>
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Feliu, María, Anabel Impa Condori, Inés Fernandez, and Nora Slobodianik. "Omega 3 Fatty Acids vs Omega 6 Fatty Acids." Current Developments in Nutrition 6, Supplement_1 (2022): 512. http://dx.doi.org/10.1093/cdn/nzac077.015.
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Abstract Objectives Dietary lipids have a very important role in nutrition and must be ingested in an appropriate proportion. Objective: To study the effect of w3 fatty acid supplementation of a diet containing sunflower oil (rich in fatty acids omega 6) as fat source, on serum fatty acid profiles of growing rats. Methods Weanling Wistar rats received during 10 days normocaloric diet and fat was provided by sunflower oil (S group). The others groups received the same diet supplemented with 24mg/day of fish oil (SF group) or chía oil (SCh group). Control group (C) received AIN´93 diet. Serum fatty acids profiles were determined by gas chromatography. Statistical analysis used ANOVA test. Results Results: (expressed as %Area) SERUM: OLEIC C:10.11 ± 1.84, S:12.13 ± 3.84, SCh:12.74 ± 1.56, SF: 13.12 ± 2.82; ARACHIDONIC C:13.40 ± 4.39, S:17.61 ± 4.09, SCh: 15.75 ± 0.89, SF:15.41 ± 1.76; LINOLEIC C:20.52 ± 3.37, S: 19.80 ± 3.36, SCh: 21.14 ± 2.12, SF: 18.92 ± 3.87; LINOLENIC (ALA) C:0.93 ± 0.27a, S:0.19 ± 0.06 b, SCh: 0.28 ± 0.08b, SF:0.22 ± 0.05b; EPA C:0.80 ± 0.22, S:0.68 ± 0.15, SCh: 0.74 ± 0.18, SF: 0.67 ± 0.14; DHA C:1.60 ± 0.55a, S:1.14 ± 0.35a, SCh:1.70 ± 0.45a, SF:4.22 ± 0.93b. Media that didn't present a letter (a, b) in common, were different (p &lt; 0.01). In sera, S, SF and SCh groups showed lower ALA levels compared to C. SF group presented high levels of DHA. Diet S was mainly a contributor to linoleic acid with a ratio w6/w3 = 250 (recommended value: 5–10). Conclusions The diet containing sunflower oil as fat source shows that ω6 family route was exacerbated; by the other hand ω3 family was depressed. Chia supplement showed a tendency towards higher values of w3 family but were significantly lower than C. Fish oil supplement increase significantly DHA values. Diet containing sunflower oil as fat source provoked changes in serum fatty acids profiles and the supplementation with w3 fatty acid provided by chía or fish oil do not increase ALA values significantly. Diet influences the serum fatty acid profile, being not only important the percentage of lipids on it but also the different fatty acids pattern. Funding Sources UBACyT: 20020190100093BA.
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Sittiprapaporn, Phakkharawat. "The effect of Plukenetia Volubilis residue on Omega-3 enriched eggs." Asian Journal of Medical Sciences 11, no. 1 (2020): 26–32. http://dx.doi.org/10.3126/ajms.v11i1.26525.
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Background: Omega-3 DHA-enriched eggs provide the consumer with a value-added product that delivers a clear, functional benefit for an increasingly health conscious population. Human requires an omega-6: omega-3 ratio of 4:1. The typical Thai diet which use a lot of vegetable oil for cooking provides a dramatically high 20:1 ratio. Lowering this ratio may reduce the risk of many chronic diseases including cardiovascular disease, coronary heart disease, Alzheimer's disease and some cancers. A healthy omega-6:omega-3 ratio promotes the health benefits. The increased levels of DHA provides much needed nutrient essential to human brain functions e.g. brain activities.
 Aims and Objective: The purpose of this study was to study the Omega-3,6,9 concentration in raw and boiled eggs feeding with Plukenetia Volubilis residue.
 Materials and Methods: A sample was selected from raw and boiled eggs feeding with Plukenetia Volubilis residue.
 Results: The result showed that total level of Omega-3 with 37869.65 mg/100mL and Omega-6 with 38490.67 mg/100mL which was not much different in Plukenetia Volubilis oil. However total Omega-9 is only 8394.74 mg/100mL compared to 37869.65 (Omega-3) and 38490.67 (Omega-6) which is almost 5 times lower than Omega-3,6.In addition, the comparison of Omega-3,6,9 concentration between raw and boiled eggs from hen feeding by Plukenetia Volubilis Oil. The total level of Omega-3,6,9 in boiled eggs was higher than in raw eggs (Omega-3: 122.85 mg/100g (raw egg), 158.12 mg/100g (boiled eggs); Omega-6: 1479.18 mg/100g (raw egg), 1766.53 mg/100g (boiled eggs); Omega-9: 3009.16 mg/100g (raw egg), 3375.23 mg/100g (boiled eggs)).
 Conclusion: There is constantly growing demand from consumers for food products of superior health quality. We can increase the omega-3 content of eggs through the enrichment of the layers’ diet with Plukenetia Volubilis. However, the relationship of Plukenetia Volubilis residue in chicken egg is still needed for further study.
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Jayaatmaja, Fattrias Handayani, Nurul Ratna Mutu Manikam, Inge Permadhi, et al. "The Role of Omega-3/Omega-6 Ratio on Appetite in Pulmonary Multidrug-Resistant Tuberculosis Patients." Jurnal Respirasi 9, no. 1 (2023): 7–11. http://dx.doi.org/10.20473/jr.v9-i.1.2023.7-11.
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Introduction: Tumour necrosis factor-alpha (TNF-α) levels, pro-inflammatory cytokines that suppress appetite, were discovered to be much higher in multidrug-resistant tuberculosis (MDR-TB) than in drug-sensitive TB. Research on the omega-3/omega-6 (ꞷ-3/ꞷ-6) polyunsaturated fatty acids (PUFAs) intake, which can support appetite in patients with MDR-TB, has never been performed. This study aimed to examine the relationship between ꞷ-3/ꞷ-6 PUFAs intake ratio and appetite mediated by TNF-α in pulmonary MDR-TB patients. Methods: This was a cross-sectional study conducted on 46 male and female adults with MDR-TB undergoing intensive phase therapy. Data were collected through questionnaires, 1x24 hours food recall, anthropometric measurements, 100 mm visual analogue appetite scale, and venous blood collection. Results: Correlation analysis used the Pearson and Spearman tests. The findings revealed the ratio of ꞷ-3/ꞷ-6 PUFAs intake of 0.11 ± 0.05, the median value of TNF-α 7.49(1.66-447.62) pg/mL, and an average appetite of 58.72 ± 26.7. There was no relationship between ꞷ-3/ꞷ-6 PUFAs intake ratio and TNF-α (r = 0.016; p = 0.91), likewise between ꞷ-3/ꞷ-6 PUFAs intake ratio with appetite (r = -0.1; p = 0.54), but there was a relationship between TNF-α and appetite (r = 0.031; p = 0.04). Conclusion: There was no relationship between ꞷ-3/ꞷ-6 PUFAs intake ratio and TNF-α and appetite in pulmonary MDR-TB patients. However, there was a relationship between TNF-α and appetite. This study is the first to determine the correlation between ꞷ-3/ꞷ-6 PUFAs intake ratio and appetite in pulmonary MDR-TB patients.
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Farhat, Antoine G., Doris Jaalouk, Sara R. Moukarzel, and Jennifer J. Ayoub. "Consumption of trans fatty acid and omega 6 to omega 3 ratio in Lebanese adults." Nutrition & Food Science 46, no. 1 (2016): 120–29. http://dx.doi.org/10.1108/nfs-07-2015-0089.
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Purpose – This study aims to quantify the dietary intake of different fat classes in Lebanese adults, compare the intakes between adult age groups and gender and compare the intakes to the World Health Organization (WHO) recommendations. Despite the health benefits of the Mediterranean diet, the diet of Lebanese adults may be altered away from the typical dietary lipid profile, possibly by the increased consumption of trans fatty acids (TFAs) and the ratio of omega 6 (n-6) to omega 3 (n-3) fatty acids. Design/methodology/approach – This is a cross-sectional survey conducted on 657 Lebanese adults (19-70 years) who completed the USA National Institute of Health diet history questionnaire. Findings – Mean daily energy intake was estimated at 2,900 ± 1,466 kcal in men and 1,977 ± 902 kcal in women. Mean TFA consumption was significantly higher in men than in women (7.2 ± 1.9 and 6.8 ± 2.0 per cent of total fat, p < 0.001) and was at least double the WHO recommendations of 1 per cent of total energy, particularly among younger adults. The n-6 to n-3 fatty acid intake ratio, fluctuated around 9:1 in both genders and in all age groups and is higher than the maximum 5-to-1 ratio recommended by WHO. The mean intake of eicosapentaenoic acid and docosahexaenoic acid was significantly lower than the latest recommendations (147 ± 182 mg/day for men and 100 ± 155 mg/day for women). Originality/value – Limited data exists on the quantity and quality of fat consumed among Lebanese adults. In conclusion, this descriptive study estimated the quantity of different fat classes consumed and compared the intakes of critical fatty acids to the WHO recommendations. Future studies need to address the implications of the high intakes of TFA and n-6 to n-3 ratio on health outcomes, including cardiometabolic diseases in our population.
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Fawzia, Nabila, Wiji Lestari, Fariz Nurwidya, Heidy Agustin, and Ammar Abdurrahman Hasyim. "Omega-6 and Omega-3 Intake Ratio in Pulmonary Tuberculosis Patients and Its Correlation with Depression Score." Jurnal Respirasi 9, no. 3 (2023): 194–99. http://dx.doi.org/10.20473/jr.v9-i.3.2023.194-199.
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Introduction: Depression affects 45.19% of pulmonary tuberculosis (TB) patients' adherence to treatment, resulting in increased morbidity and death, medication resistance, and continued disease transmission. This study aimed to examine the relationship between omega-6/omega-3 (ꞷ-6/ꞷ-3) polyunsaturated fatty acids (PUFA) intake ratio and depression score in patients with pulmonary TB at Persahabatan National Respiratory Referral Hospital, Jakarta. Methods: This was a cross-sectional study of 99 subjects with pulmonary TB. Data were collected using the Semi-Quantitative Food Frequency Questionnaire (SQ-FFQ), anthropometric measurements, and the Beck Depression Inventory-II (BDI-II). Results: Correlation analysis used the Spearman test and revealed the ratio of ꞷ-6/ꞷ-3 PUFAs intake of 7.78 ± 1.13, the median value of depression score was 9 (10-36). There was no correlation between ꞷ-6/ꞷ-3 PUFA intake and depression score (r = 0.063; p = 0.534). Conclusion: There was no correlation between ꞷ-6/ꞷ-3 PUFAs intake ratio and depression scores in pulmonary TB patients. This is the first study to examine the correlation between ꞷ-6/ꞷ-3 PUFA intake ratio and depression score in pulmonary TB patients.
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Usturoi, Marius Giorgi, Roxana Nicoleta Rațu, Ioana Cristina Crivei, et al. "Unlocking the Power of Eggs: Nutritional Insights, Bioactive Compounds, and the Advantages of Omega-3 and Omega-6 Enriched Varieties." Agriculture 15, no. 3 (2025): 242. https://doi.org/10.3390/agriculture15030242.
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This study explores the nutritional benefits and health implications of omega-3- and omega-6-enriched eggs, positioning them within the context of functional foods aimed at improving public health outcomes. With rising consumer interest in nutritionally fortified foods, omega-enriched eggs have emerged as a viable source of essential fatty acids, offering potential benefits for cardiovascular health, inflammation reduction, and cognitive function. This research examines enrichment techniques, particularly dietary modifications for laying hens, such as the inclusion of flaxseed and algae, to enhance omega-3 content and balance the omega-6-to-omega-3 ratio in eggs. The findings indicate that enriched eggs provide significantly higher levels of essential fatty acids and bioactive compounds than conventional eggs, aligning with dietary needs in populations with limited access to traditional omega-3 sources like fish. This study further addresses consumer perception challenges, regulatory constraints, and environmental considerations related to sustainable production practices. The conclusions underscore the value of omega-enriched eggs as a functional food that aligns with health-conscious dietary trends and recommend ongoing research to refine enrichment methods and expand market accessibility.
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Akbar, Samina, Muhammad Zeeshan Bhatti, Rida Fatima Saeed, and Asma Saleem Qazi. "Polyunsaturated Fatty Acids: Impact on Health and Disease Status." Life and Science 2, no. 2 (2021): 12. http://dx.doi.org/10.37185/lns.1.1.85.
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 Over the last decades, the polyunsaturated fatty acids (PUFAs) have been largely explored not only for their nutritional value but also for the numerous biological functions and therapeutic effects. The serum and erythrocyte levels of PUFAs depend on the genetic control of metabolism as well as the dietary intake and are considered to reflect the health and disease status of an individual. Two families of PUFAs, omega-3 (n-3) and omega-6 (n-6), have gained much attention because of their involvement in the production of bioactive lipid mediators and therefore, a balanced omega-6/omega-3 ratio is crucial in maintaining the overall health of an individual. Omega-3 PUFAs, notably eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3) have been shown to exert beneficial effects, possibly due to their lipid-lowering, anti-inflammatory, anti-hypertensive and cardioprotective effects, whereas omega-6 fatty acids such as arachidonic acid (ARA, 20:4n-6) exhibit the opposite properties. Even though, numerous epidemiological studies and clinical interventions have clearly established the effectiveness of omega-3 PUFAs in various pathological conditions including dyslipidemia, obesity, diabetes, cancer, cardiovascular and neurodegenerative diseases, some controversies do exist about the beneficial effects of omega-3 PUFAs and need to be clarified. Larger clinical trials with extended follow-up periods are required along with a careful dose selection, in order to confirm the clinical significance and efficacy of omega-3 PUFAs as therapeutic agents.
 
 
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Pandiangan, Maruba, Jamaran Kaban, Basuki Wirjosentono, and Jansen Silalahi. "Analisis Kandungan Asam Lemak Omega 3 dan Omega 6 pada Minyak Ikan Mas (Cyprinus Carpio)." Talenta Conference Series: Science and Technology (ST) 2, no. 1 (2019): 37–44. http://dx.doi.org/10.32734/st.v2i1.309.
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Penelitian ini bertujuan untuk mengetahui komponen asam lemak omega-3 dan omega-6 pada minyak ikan mas. Penelitian ini dilakukan di Laboratorium Pengolahan Pangan Fakultas Pertanian Universitas Katolik Santo Thomas, Medan. Pelaksanaan penelitian ini dilakukan pada bulan Agustus 2016 hingga Oktober 2016. Minyak ikan mas diperoleh dengan menggunakan proses rendering kering. Dari uji sifat fisika kimia diperoleh semakin besar nilai angka asam maka semakin rendah kualitas minyaknya, semakin kecil angka peroksida maka kualitas minyak semakin baik, bilangan iod yang tinggi menunjukkan bahwa minyak tersebut mengandung asam lemak tak jenuh yang banyak, semakin besar bilangan penyabunan yang dihasilkan maka minyak memiliki berat molekul yang lebih rendah. Hasil analisis minyak ikan dengan GC-MS didapat komposisi asam lemak sebagai berikut: asam lemak jenuh sebanyak 27,54%, asam lemak tidak jenuh tunggal sebanyak 43,92%, asam lemak tidak jenuh jamak sebanyak 21,25%. Asam lemak omega 3 sebanyak 2,83% yang terdiri dari asam linolenat 1,49%, asam eikosatrienoat 0,87%, asam eikosapentaenoat 0,11%, asam dekosaheksaenoat 0,36%, dan omega 6 sebanyak 17,36% yang terdiri dari asam linoleat 16,44%, asam arakhidonat 0,92%, Nilai gizi minyak ikan mas belum memenuhi komposisi ideal nilai gizi minyak ikan, dimana perbandingan ketiga jenis asam lemak belum memenuhi perbandingan 33,33% dan total penyimpangan sangat tinggi.
 
 This study aimed to determine the components of omega-3 and omega-6 fatty acids in carp oil. This research was conducted at the Food Processing Laboratory of the Faculty of Agriculture, Santo Thomas Catholic University, Medan. The implementation of this research was conducted from August 2016 to October 2016. Carp oil was obtained using a dry rendering process. From the test of physical chemical properties obtained, the greater the value of the acid number, the lower the quality of the oil. It also showed that the smaller the peroxide number, the better the quality of the oil. The higher iodine number indicated that it contained many unsaturated fatty acids; therefore, the greater the saponification number the oil resulted, the lower molecular weight it obtained. The results of analysis of fish oil with GC-MS, showed the following fatty acid compositions: 27.54% saturated fatty acids, 43.92% monounsaturated fatty acids, and 21.25% plural unsaturated fatty acids. Omega-3 fatty acids were 2.83% consisting of 1.49% linolenic acid, 0.87% eicosapenoic acid, 0.11% eicosapentaenoic acid, 0.36% decosahexaenoic acid. It also resulted 17.36% omega-6 consisted of from linoleic acid 16.44%, arachidonic acid 0.92%. The nutritional value of goldfish oil did not meet the ideal composition of nutritional value of fish oil, where the ratio of the three types of fatty acids had not met the ratio of 33.33% and the total deviation was very high.
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Popova, Nadezhda, Yuliya Pisklyukova, and Viktoriya Orlova. "The use of bio-efficient plant materials to optimize the fatty acid composition of poultry terrins." BIO Web of Conferences 30 (2021): 01014. http://dx.doi.org/10.1051/bioconf/20213001014.
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The development of functional products characterized by high biological efficiency is an urgent task. The article presents the results of the development of balanced-fatty acid terrins from poultry meat. To increase the biological effectiveness of chopped products, raw materials containing omega-3 and omega-6 polyunsaturated fatty acids (PUFAs) were selected. Based on the analysis of the chemical composition of the raw material kit, the intervals for the Introduction of ingredients containing biologically effective components are calculated. Their optimum amount has been experimentally established. The resulting innovative products are characterized by a balanced composition in terms of content and ratio of omega-3 and omega-6 PUFAs. In addition, the value of the indicator of biological value has increased. Developed poultry terrins can be recommended both for a wide range of consumers, and for use in diet (including low-carb diets), baby food. The developed terrines will expand the range of chopped poultry products of functional orientation.
Dissertations / Theses on the topic "Omega-6/omega-3 ratio value"
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Melo, RadamÃs Bezerra. "Anti-inflammatory and antioxidant action of oil mixes of omega 9, 6 and 3 with low ratio omega-6/omega-3 and high ratio omega-9/omega-6 after dental extraction in rats." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=17575.
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CoordenaÃÃo de AperfeÃoamento de Pessoal de NÃvel Superior<br>Oil fatty acids omega-3 and omega-9 have anti-inflammatory and antioxidant activities, while the omega-6 has pro-inflammatory action. The aim of this study was to evaluate the presence of antioxidant and anti-inflammatory effects with high nutraceutical ratio of omega-9: omega-6, antioxidant properties, and low ratio omega-6: omega-3, anti-inflammatory properties three days after tooth extraction in rats. Thirty-two young Wistar rats with 270-310g were randomly divided into four groups of 8 animals: Group Sham, Saline Group, Isolipid Group, and Mix Test Group. The animals received 0.9% NaCl, Sham Group and Salina Group, or Isolipid Mix (alpha-linolenic acid - ALA) mixture containing omega-6: omega-3 oils (ratio 8:01) and omega-9: omega-6 (ratio 0.4:1), Isolipid group, or Mix Test (alpha-linolenic acid - ALA, docosahexaenoic acid - DHA, eicosapentaenoic acid - EPA) omega-6: omega-3 (ratio 1.4: 1) and omega-9: omega -6 (3.4:1 ratio), Mix Text Group by gavage 1.2g solutions for kg/day for four days before and three days after the extraction of the left mandibular first molar. Evaluation of edema generated by the surgical procedure and collected the perialveolar the site of tooth extraction and dental alveolar mucosa itself for laboratory testing were performed: myeloperoxidase, osteoclast count, concentrations of TNF-α and IL-1β, glutathione (GSH) and thiobarbituric acid reactive substances (TBARS). The Mix Test induced a significant decrease on post-operative edema, myeloperoxidase , osteoclasts count , GSH in blood and tissue, on tissue and plasma TBARS and on the TNF-αconcentration, but did not show significant difference on the IL-1β concentration at the third post-operative day. The gavage with the Mix Test showed anti-inflammatory and antioxidant actions after molar tooth extraction in rats.<br>Os Ãcidos graxos insaturados Ãmega-3 e Ãmega-9 possuem aÃÃo anti-inflamatÃria e antioxidante, enquanto o Ãmega-6 possui aÃÃo prÃ-inflamatÃria. O objetivo do presente estudo foi avaliar a aÃÃo antioxidante e anti-inflamatÃria do mix de Ãleos em concentraÃÃes nutracÃuticas com alta razÃo Ãmega-9: Ãmega-6, favorecendo aÃÃo antioxidante, e baixa razÃo Ãmega-6:Ãmega-3, favorecendo aÃÃo anti-inflamatÃria no terceiro dia pÃs exodontia em ratos. Foram utilizados trinta e dois ratos Wistar jovens com 270-310g distribuÃdos aleatoriamente em quatro grupos de 8 animais: Grupo Sham, Grupo SoluÃÃo Salina, Grupo mix isolipÃdico e Mix Teste. Os animais receberam NaCl 0,9%, Grupo Sham e Grupo SoluÃÃo Salina, ou mix isolipÃdico, (Ãcido alfa-linolÃico - ALA) mistura contendo Ãmega-6:Ãmega-3 Ãleos (relaÃÃo de 8:01) e Ãmega-9:Ãmega-6 (relaÃÃo 0,4:1), Grupo IsolipÃdico, ou Mix Teste (Ãcido alfa-linolÃnico - ALA, Ãcido docosahexaenÃico - DHA, Ãcido eicosapentaenÃico - EPA) de Ãmega-6:Ãmega-3 (relaÃÃo 1,4:1) e Ãmega-9:Ãmega -6 (3,4:1 relaÃÃo), Grupo Teste, receberam por gavagem 1,2g da soluÃÃo correspondente a cada grupo por kg/dia durante quatro dias antes e trÃs dias apÃs a exodontia do primeiro molar inferior esquerdo. Foi realizada a avaliaÃÃo do edema gerado pelo procedimento cirÃrgico e coletada a mucosa perialveolar ao sÃtio da extraÃÃo dental e o prÃprio alvÃolo dental para anÃlises laboratoriais: mieloperoxidase, contagem de osteoclastos, expressÃo do TNF-α e IL-1β, glutationa (GSH) e substÃncias reativas ao Ãcido tiobarbitÃrico (TBARS). O Mix Teste induziu uma diminuiÃÃo significante na atividade da mieloperoxidase,no edema pÃs operatÃrio, na contagem de osteoclastos, na GSH plasmÃtica e do tecido, nas concentraÃÃes plasmÃticas e do tecido de TBARS, na expressÃo do TNF-α, mas nÃo mostrou diferenÃa significante na expressÃo de IL-1β no terceiro dia pÃs-operatÃrio. A administraÃÃo por gavagem do Mix Teste demonstrou uma reduÃÃo da resposta inflamatÃria e oxidante, atuando como anti-inflamatÃrio e antioxidante, apÃs exodontia em ratos
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Burlamaqui, IdÃlia Maria Brasil. "Hyperlipidic, normolipidic and hypolipidic diets with low omega-6:omega-3 ratio and high omega-9:omega-6 ratio on colorectal carcinogenesis in rats." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=11938.
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CoordenaÃÃo de AperfeiÃoamento de NÃvel Superior<br>CÃncer colorretal tem alta incidÃncia, sendo influenciado por fatores genÃticos e ambientais. Estudos sugerem que Ãcidos graxos Ãmegas 3, 6 e 9 estÃo envolvidos na sua gÃnese e prevenÃÃo. Objetivo foi verificar efeitos de dietas hiperlipÃdica, normolipÃdica e hipolipÃdica, com baixa relaÃÃo -6:-3 e alta -9:-6 na carcinogÃnese colorretal induzida por azoximetano (AOM). Foram usados 60 ratos Wistar, 3 semanas de idade, pesando 40 a 50g e distribuÃdos em 5 grupos de 12 animais: GI- Dieta PadrÃo sem AOM; GII- Dieta PadrÃo e AOM; GIII- Dieta HiperlipÃdica e AOM; GIV- Dieta NormolipÃdica e AOM; GV- Dieta HipolipÃdica e AOM. Avaliados peso e ingesta 4 vezes por semana atà a 36Â. Os colos foram analisados quanto à presenÃa de tumores, focos de criptas aberrantes, nÃmero de criptas por foco, incidÃncia, invasÃo, atipias e multiplicidade dos carcinomas. Determinaram-se colesterol total e fraÃÃes, triglicerÃdeos, glicemia, ALT e AST, glutationa, TBARS, interleucinas no plasma. Ãndice apoptÃtico e mitÃtico, NFkB, COX-2 e K-Ras foram medidos em tecido tumora. GI e GII apresentaram aumento da massa corporal em relaÃÃo aos GIII, GIV e GV. Ingestas de GI e GII foram maiores que em GIII, GIV e GV. Houve reduÃÃo do nÃmero de criptas aberrantes e do total de focos com menos e mais de 5 criptas em GIV e GV comparados com GII. Houve diminuiÃÃo na incidÃncia dos tumores em GV. O Ãndice de carcinogÃnese foi superior no GII em relaÃÃo ao GV. Glutationa foi maior e TBARS menor em GV. IL-10 no GIII foi maior que em GI. IFNγ elevou-se em GII em relaÃÃo aos GIII e GV. TNF-α aumentou em GIV e GV em relaÃÃo ao GI. Apoptose aumentou nos grupos V, IV, III, em relaÃÃo aos GII e GI. Ãndice mitÃtico foi menor em GV em relaÃÃo aos GII, GIII e GIV. Conclui-se que dietas com baixa razÃo -6:-3 e alta -9:-6 reduzem a ingesta, massa corporal e peroxidaÃÃo lipÃdica; elevam a capacidade antioxidante e protegem contra a carcinogÃnese cÃlica.<br>Colorectal cancer has a high incidence and is known to be influenced by dietary factors. The fatty acids -3, -6 and -9 are believed to be involved in its genesis and prevention. The objective was to evaluate the effect of hyperlipidic, normolipidic and hypolipidic diets with low -6:-3 ratio and high -9:-6 ratio on azoxymethane (AOM) induced colorectal carcinogenesis in rats. Sixty 3-week-old male Wistar rats weighing 40-50g were assigned to 5 groups of 12 each: GI=Standard diet without AOM; GII=Standard diet and AOM; GIII=Hyperlipidic diet and AOM; GIV=Normolipidic diet and AOM; GV=Hypolipidic diet and AOM. Weight and ingestion were registered 4 times/week until the 36th week. Colons were analyzed for tumors, aberrant crypt foci, number of crypts per focus, incidence, differentiation, invasion and carcinoma multiplicity. The levels of total and fractionated cholesterol, triglycerides, glycemia, ALT, AST, glutathione, TBARS, interleukins were determined in plasma. Apoptosis, mitosis, NFkB, COX-2 and K-Ras were measured in tumor tissue. Body mass was greater in GI and GII than in GIII, GIV and GV. Ingestion was greater in GI and GII than in GIII, GIV and GV. The number of aberrant crypts and the total number of foci with <5 and >5 crypts decreased in GIV and GV compared to GII. In GV, the incidence of tumors was reduced. The index of carcinogenesis was higher in GII than in GV. Glutathione was higher and TBARS was lower in GV. GIII was higher than in GI with regard to IL-10. IFNγ was higher in GII than in GIII and GV. TNF-α was higher in GIV and GV than in GI. Apoptosis increased in GV, GIV and GIII in relation to GII and GI. The mitotic index was lower in GV than in GII, GIII and GIV. In conclusion, hyperlipidic, normolipidic and hypolipidic diets with low -6:-3 ratio and high -9:-6 ratio reduce ingestion, body mass and lipid peroxidation; increase the antioxidant capacity and offer protection against colorectal carcinogenesis.
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Bell, Kevin. "Can moderate exercise decrease the ratio of omega-6/omega-3 polyunsaturated fatty acids in college age students?" 2009. http://digital.library.okstate.edu/etd/Bell_okstate_0664M_10259.pdf.
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Vollhardt, Christiane [Verfasser]. "The effect of lowering the ω-6/ω-3 [omega-6/omega-3] long-chain polyunsaturated fatty acid ratio in the diet of pregnant and lactating women on fatty acid levels and body composition of the women and their newborns / Christiane Vollhardt". 2010. http://d-nb.info/1004942060/34.
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Rondeau, Isabelle. "Effet des changements du ratio alimentaire oméga-3/oméga-6 dans un modèle d’infarctus du myocarde reperfusé chez le rat." Thèse, 2010. http://hdl.handle.net/1866/4564.
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Une mort cellulaire par apoptose impliquant un processus inflammatoire est observée dans
le système limbique, suite à un infarctus du myocarde. Les oméga-3 et ses métabolites, en
plus de leurs propriétés bénéfiques pour le système cardiovasculaire, réduisent l’inflammation, contrairement aux oméga-6 qui sont plus pro-inflammatoires. Comme le
métabolisme de ces deux acides gras essentiels impliquent les mêmes enzymes, le ratio alimentaire oméga-3/6 aurait donc des impacts importants sur l'état inflammatoire et ainsi indirectement sur l'apoptose. Conséquemment, cette étude a pour but d'évaluer l'effet de différents ratios oméga-3/6 sur la taille de l’infarctus, l’inflammation et l’apoptose dans le
système limbique suite à un infarctus du myocarde. Des rats Sprague-Dawley ont été aléatoirement distribués dans trois groupes contenant des ratios 1:1, 1:5 et 5:1 oméga-3/6. Ils ont été nourris pendant 2 semaines, suivie d’une occlusion de l’artère coronaire gauche descendante pendant 40 minutes et d’une période de reperfusion (15 min et 24 h). De hauts ratios d’oméga-3 (5:1 et 1:1) diminuent significativement la taille de l’infarctus de 32 % et augmentent l’activité d’Akt, impliquée dans la voie cardioprotectrice RISK, comparativement au ratio 1:5. Ils diminuent aussi la concentration plasmatique de TNF-D. Dans le système limbique, l’activité de la caspase-3
est augmentée dans la région CA1, après 15 min, et dans les régions du CA1 et du gyrus
dentelé (Gd), après 24 h, avec la diète 1:5 en comparaison aux diètes 1:1 et 5:1. L’activité enzymatique de la caspase-8 est augmentée dans le Gd, alors que dans le CA1, il y a une activité plus importante de la caspase-9 aux temps de reperfusion étudiés.
Conclusion: Les diètes élevées en oméga-3/oméga-6 réduisent la taille de l'infarctus,
l’inflammation et diminuent l’apoptose dans le système limbique après un infarctus du
myocarde.<br>Apoptosis occurs in the limbic system by a mechanism involving inflammation after a myocardial infarction. Omega-3 are essential fatty acids known for their benefits in
cardiovascular health and to reduce inflammation, whereas, omega-6 and their metabolites are more inflammatory. Since these two essential fatty acids are metabolized by the same group of enzymes, the resulting competition would affect the inflammation and thus indirectly the apoptosis. Therefore, the aim of this study is to evaluate the effect of different
omega-3/6 ratios on the infarct size, inflammation and apoptosis in the limbic system after myocardial infarction. Male Sprague-Dawley rats were divided randomly between three diet groups containing 1:5, 1:1 and 5:1 omega-3/6 ratios. Rats were fed for two weeks followed by a left anterior
descending coronary occlusion for 40 min and by reperfusion time (15 min or 24 h). Infarct
size was significantly reduced by 32% and Akt activity, implicated in RISK cardioprotection pathway, enhanced by the 5:1 and 1:1 in comparison to the 1:5 diet ratios. They also reduced TNF-D plasma concentration. In the limbic system, caspase-3 enzymatic activity was doubled in CA1 after 15 min and in CA1 and dentate gyrus (Dg), after 24 h, in the 1:5 compared to 1:1 and 5:1 groups. Caspase-8 enzymatic activity was increased in Dg and capase-9 was enhanced in the CA1 at both reperfusion time in the 1:5 against the 1:1 and 5:1 groups.
Conclusion: High omega-3 dietary ratio helps to reduce infarct size, inflammation and to
prevent apoptosis in the limbic system.
Books on the topic "Omega-6/omega-3 ratio value"
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Congress, International Society of Nutrigenetics/Nutrigenomics. A balanced omega-6/omega-3 fatty acid ratio, cholesterol, and coronary heart disease. Karger, 2009.
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1933-, Simopoulos Artemis P., Meester Fabien De, and International Congress on the Columbus Concept (6th : 2008 : Geneva, Switzerland), eds. A balanced omega-6/omega-3 fatty acid ratio, cholesterol and coronary heart disease. Karger, 2009.
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Simopoulos, A. P., and L. G. Cleland, eds. Omega-6/Omega-3 Essential Fatty Acid Ratio: The Scientific Evidence. S. Karger AG, 2003. http://dx.doi.org/10.1159/isbn.978-3-318-01018-3.
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Simopoulos, A. P., and F. De Meester, eds. A Balanced Omega-6/Omega-3 Fatty Acid Ratio, Cholesterol and Coronary Heart Disease. S. Karger AG, 2009. http://dx.doi.org/10.1159/isbn.978-3-8055-9225-3.
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(Editor), Artemis P. Simopoulos, and Leslie G. Cleland (Editor), eds. Omega-6/Omega-3 Essential Fatty Acid Ratio: The Scientific Evidence (World Review of Nutrition and Dietetics). S. Karger Publishers (USA), 2003.
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Omega63 Fatty Acids Functions Sustainability Strategies And Perspectives. Humana Press, 2012.
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Gluckman, Sir Peter, Mark Hanson, Chong Yap Seng, and Anne Bardsley. Polyunsaturated fatty acids in pregnancy and breastfeeding. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780198722700.003.0005.
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Evidence for the importance of the long-chain omega-3 polyunsaturated fatty acids in fetal and infant development is growing, as is interest in what constitutes an appropriate intake from sources such as oily fish or dietary supplements for pregnant women and/or infants. Polyunsaturated fatty acids have been implicated in maternal mental health and aspects of infant development, including cognitive and visual function, adiposity, and allergy. Western diets have become imbalanced with regard to the ratio of omega-6:omega-3 fatty acids, and recommendations to correct this imbalance include increasing the maternal intake of oily fish. However, this recommendation needs to be evaluated in light of the increased risk of exposure to contaminants such as mercury. Vegetable oils and cereals are important sources of polyunsaturated fatty acids for vegetarians.
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Maj, Dorota. Modyfikujący wpływ roślinnych dodatków paszowych na użytkowość mięsną i ekspresję wybranych genów u królików w zależności od wieku i płci. Publishing House of the University of Agriculture in Krakow, 2017. http://dx.doi.org/10.15576/978-83-66602-29-8.
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The aim of the study was to determine the effect of feed additives (algae, soybean, and sunflower oil) used in the rabbit feed on: growth indices and slaughter traits, pH, colour, texture, chemical composition, fatty acid profile and oxidative stability (TBARS) of the meat as well as FTO and FABP4 genes expression in the meat’s intramuscular fat (m. longissimus lumborum), depending on the age and sex. The experimental material consisted of Termond White rabbits (n = 160, 80 females and 80 males). Animals were weaned on the 35th day of life, and housed in metal cages arranged in batteries (4 rabbits of the same sex in a cage). From weaning to 12 or 18 weeks of age, the rabbits were fed pellets ad libitum. Animals in the control group (C) received non-supplemented pellets throughout the experiment. In the other groups, the pellet contained 1% algae (A), 3% sunflower oil (OS), and 3% soybean oil(SO).The experimental diets were formulated to have similar protein and energy content. Diets were balanced by lowering the proportion of other feed components. The total share of all components remained at 100%. The results indicate that 3% vegetable oils (soybean or sunflower) supplementation of diets for growing rabbits leads to an increase of body weight and improvement of some of the slaughter traits, while 1% addition of algae to the feed causes deterioration of body weight and slaughter traits. The effect of oil additive depends on the animals’ age. Supplementation of the rabbits’ diet with algae (1%) or sunflower and soybean oils (3%) led to an increase in the dressing percentage of rabbits slaughtered at 18 weeks of age (approx. 3%), but had no effect on the dressing percentage of rabbits slaughtered at 12 weeks of age. Feeding pellets with either 3% vegetable oils or 1% algae additive to the rabbits did not significantly change the chemical composition of the meat. Protein content increased and intramuscular fat content decreased with age, while ash and water content were similar. The feed additives significantly differentiated meat acidity without deteriorating meat quality. Diet modification has not affected negatively meat colour. 24 h after the slaughter, the colour of rabbit meat was similar across the studied feeding groups. Correlation between diet and rabbits’ age was found. Meat texture (hardness, springiness and chewiness) of all rabbit groups slaughtered at 12 weeks of age was similar, and the shear for cewas greater in rabbits fed pellets with algae and soybean oil. At 18 weeks of age, rabbit meat from experimental groups had lower hardness and chewiness, compared to meat of the animals from the control group. Meat shear force was higher in the control group, and from algae-supplemented group. The correlation between diet and age was also found. The use of 3% vegetable oils or 1% algae as feed additives significantly reduced meat oxidative stability. Soybean or sunflower oil (3%) usedas feed additives favourably modified the fatty acid composition of intramuscular fat. Polyunsaturated fatty acids (PUFA) content was increased, including linoleic acid, and PUFA/MUFA ratio was improved. The content of these acids decreased with age. The use of algae (1%) as a feed additive resulted in positive effect on the increase of n-3 fatty acid content (EPA and DHA) in meat intramuscular fat. Algae supplementation improved pro-health properties of meat, with low n-6/n-3 acid ratio (2.5), indicating that diet modification may affect the fatty acid composition of rabbit meat. The influence of diet and age on FTO and FABP4 gene expression in meat intramuscular fat (m. longissimus lumborum) was found. FTO and FABP4 gene expression increased with age and was the highest in the group of rabbits with 1% algae supplementation in the diet. The effect of rabbits’ gender on growth, slaughter traits, meat quality and gene expression in rabbits was not observed. In conclusion, the use of natural feed additives, such as sunflower, soybean oil or algae, can improve the nutritional value of rabbit meat, without changing its chemical or physical properties, and therefore the meat can serve as functional food, with properties beneficial to human health. The results obtained in this study also indicate that the expression of FTO and FABP4 genes in rabbit muscles is regulated by dietary factors and age, which, in addition to cognitive significance, has practical implications for improving technological and dietary quality of rabbit meat.
Book chapters on the topic "Omega-6/omega-3 ratio value"
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Yehuda, S. "Omega-6/Omega-3 Ratio and Brain-Related Functions." In World Review of Nutrition and Dietetics. KARGER, 2003. http://dx.doi.org/10.1159/000073791.
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Dubnov, G., and E. M. Berry. "Omega-6/Omega-3 Fatty Acid Ratio: The Israeli Paradox." In World Review of Nutrition and Dietetics. KARGER, 2003. http://dx.doi.org/10.1159/000073794.
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Chajès, V., and P. Bougnoux. "Omega-6/Omega-3 Polyunsaturated Fatty Acid Ratio and Cancer." In World Review of Nutrition and Dietetics. KARGER, 2003. http://dx.doi.org/10.1159/000073797.
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Kang, Jing X. "Omega-6/Omega-3 Fatty Acid Ratio is Important for Health." In Wild-Type Food in Health Promotion and Disease Prevention. Humana Press, 2008. http://dx.doi.org/10.1007/978-1-59745-330-1_4.
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Bougnoux, Philippe, Virginie Maillard, and Véronique Chajès. "Omega–6/Omega–3 Polyunsaturated Fatty Acids Ratio and Breast Cancer." In World Review of Nutrition and Dietetics. KARGER, 2005. http://dx.doi.org/10.1159/000088235.
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Kang, Jing X. "Achieving Balance in the Omega—6/Omega—3 Ratio through Nutrigenomics." In Nutrigenetics and Nutrigenomics. KARGER, 2004. http://dx.doi.org/10.1159/000081253.
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Kang, J. X. "The Importance of Omega-6/Omega-3 Fatty Acid Ratio in Cell Function." In World Review of Nutrition and Dietetics. KARGER, 2003. http://dx.doi.org/10.1159/000073790.
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Panagiotakos, Demosthenes B., Christina-Maria Kastorini, Christos Pitsavos, and Christodoulos Stefanadis. "The Current Greek Diet and the Omega-6/Omega-3 Balance: The Mediterranean Diet Score Is Inversely Associated with the Omega-6/Omega-3 Ratio." In World Review of Nutrition and Dietetics. KARGER, 2011. http://dx.doi.org/10.1159/000327791.
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Simopoulos, Artemis P. "Evolutionary Aspects of the Dietary Omega-6/Omega-3 Fatty Acid Ratio: Medical Implications." In Evolutionary Thinking in Medicine. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-29716-3_9.
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Simopoulos, A. P. "Importance of the Ratio of Omega-6/Omega-3 Essential Fatty Acids: Evolutionary Aspects." In World Review of Nutrition and Dietetics. KARGER, 2003. http://dx.doi.org/10.1159/000073788.
Full textConference papers on the topic "Omega-6/omega-3 ratio value"
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Azizah, Ninna Arifatun Nurul, Sentot Budi Rahardjo, Witri Wahyu Lestari, and Soerya Dewi Marliyana. "Synthesis and Characterization of Copper Complex Chelated with Phenobarbital Ligand." In 8th International Conference on Advanced Material for Better Future. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-n2rlar.
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The research is intended to synthesize copper(II) with Phenobarbital (PB) complex in 1 : 4 mole ratio. The sole reflux method is designated to synthesize reactant within methanol solvent. Cu(II) complex is characterized using Atomic Absorption Spectrophotometry (AAS), UV-Vis Spectrophotometer, Fourier-transform Infrared Spectroscopy (FTIR), Thermogravimetric Analysis (TGA), Conductivity meter, and Magnetic Susceptibility Balance (MSB). The Cu(II)-PB complex signified 1 absorption peak at 517.5 nm with 2Eg → 2T2g transition. Complex is then composed by 6 electron donors of Cu ion-bound ligand, forming the octahedral geometry. Complex possesses the molecule formula of [Cu(PB)3]Cl2, this signifies only the PB that bound to Cu(II) ion as ligand through Oxygen and Nitrogen atom donors. There is no evidence of H2O molecules coordinated as ligand. Complex is electrolyte along with Cl- as counter ion that neutralized the complex charge. Complex is also being paramagnetic with the value of μeff of 1.74 BM.
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Trist�n, Carolina, Marcos Fallanza, Raquel Ib��ez, Ignacio E. Grossmann, and David Bernal Neira. "Designing Reverse Electrodialysis Process for Salinity Gradient Power Generation via Disjunctive Programming." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.126079.
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Reverse electrodialysis (RED) is a nascent renewable technology that generates clean, baseload electricity from salinity differences between two water streams, a renewable source known as salinity gradient energy (SGE). Full-scale RED progress calls for robust techno-economic and environmental assessments. Using generalized disjunctive programming (GDP) and life cycle assessment (LCA) principles, this work proposes cost-optimal and sustainable RED process designs involving different RED stack sizes and width-over-length ratios to guide the design and operation from the demonstration to full-scale phases. Results indicate that RED units will benefit from larger aspect ratios with a relative increase in net power of over 30% with 6 m2 membrane size. Commercial RED unit sizes (0.25�3 m2) require larger aspect ratios to reach an equal relative increase in net power but exhibit higher power densities. The GDP model devises profitable RED process designs for all the assessed aspect ratios in a foreseeable scenario for full-scale deployment, that is, the energy recovery from desalination concentrates mixed with reclaimed wastewater effluents. A RED system with 3 m2 RED units nine times wider than its length could earn a net present value of $2M at a competitive levelized cost of electricity of $111/MWh in the Spanish electricity market. On-site, RED-based electricity could abate roughly 7% of the greenhouse gas emissions from the desalination plant's energy supply, given the low emissions contribution of RED supply share. These findings demonstrate that optimization-based eco-technoeconomic assessments are a vital ally in making RED a full-scale reality.
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Karaman, �mer Faruk, Peter Lang, and Laszlo Hegely. "Assessing Distillation Processes through Sustainability Indicators Aligned with the Sustainable Development Goals." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.186066.
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A generally applicable framework for the evaluation of the sustainability of distillation processes is proposed by aligning indicators directly to selected sustainable development goals (SDGs) created by the United Nations. The indicators are related to the goals good health and well-being (SDG 3), clear water and sanitation (SDG 6), affordable and clean energy (SDG 7), decent work and economic growth (SDG 8), industry, innovation and infrastructure (SDG 9), responsible consumption and production (SDG 12), climate action (SDG 13) and life below water (SDG 14). A total of 12 sustainability indicators, including human toxicity potential, wastewater generation, water consumption, renewable energy share, energy demand, material footprint, profit, waste generation, recycling ratio of waste, greenhouse gas emission, eutrophication potential and acidification potential are assigned to selected SDGs. The application of the indicators is illustrated by two case studies: a batch (BD) and a continuous (pressure-swing) distillation process. Case BD6, where the CO2 emission was minimized, proves to be the most sustainable BD process. It has the lowest greenhouse gas emission, acidification potential and waste generation. Although it has the lowest profit, the variations across the BD cases are minimal. By the pressure-swing distillation, L4 (feeding into low-pressure column, heat integration with optimization) is the best case, with the highest profit and the lowest energy demand, material footprint and greenhouse gas emission values.
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Kane, R. D., M. S. Cayard, and M. Prager. "Test Procedures for Evaluation of Resistance of Steels to Cracking in Wet H2S Environments." In CORROSION 1994. NACE International, 1994. https://doi.org/10.5006/c1994-94519.
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Abstract This paper describes the results of a laboratory study under the direction of a petroleum industry committee involving the use of several standard and non-standard methods for the evaluation of steels for cracking in wet H2S environments. This investigation includes samples of two commonly used pressure vessel steel (ASTM A 516-70 and A 285C) and several test methods including: (1) NACE TM0177 - 90A tensile test, (2) NACE TM0177 - 90A tensile test with one-side (OS) exposure, (3) NACE TM0284, (4) NACE TM0284 with TM0177 solution, (5) TM0284 with OS exposure and (6) Non standard Double Beam (DB) specimen in 4 point bending with both immersion (IMM) and OS exposure. The test results indicated that all test methods showed an higher susceptibility to HIC in the A 516-70 steel used in this study than in the A285 C samples. However, at high applied stress levels both materials exhibited high susceptibility to SOHIC as determined by high values of crack thickness ratio (CTR) in the tensile specimens. OS exposure conditions typically of that found in refinery vessels was significantly less severe from the standpoint of the extent of internal hydrogen cracking produced in both steels. Using DB specimens, the effects of orientation were determined. Specifically, the orientations among the rolling, welding and stressing direction were systematically evaluated. It was found that the condition where the welding direction was parallel (WD - L) to the rolling direction and the stress direction was perpendicular (SD - T) to the rolling direction produced the highest apparent susceptibility to SOHIC (highest CTR values) when the crack measurements were made on the LT plane.
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Lanchava, Omar, Nino Ratiani, Zaza Khokerashvili, and Nino Arudashvili. "VARIATION OF CRITICAL VELOCITY OF DOWNWARD VENTILATION IN INCLINED ROAD TUNNELS." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/4.1/s19.62.
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The paper presents the pattern of variation of critical velocity during longitudinal downward ventilation in an inclined road tunnel with its slope varying within 0-8 degrees. The results of both full-scale numerical modelling and laboratory experiments for a 1:10 scale tunnel models are presented. The effect of fire on the critical velocity and gradient factor was studied on the models. During the numerical modelling, the seat of fire, fans and tunnel portals were modelled with 0.1*0.1*0.1 m cells, while the cell sizes in the other areas were 0.5*0.5*0.5 m. Observations on the physical model, made of 2 mm thick stainless-steel sheets, were carried out considering the Froude number. The surface area of the source fire was 130X50 mm and 340X60 mm. Natural gas and air flow rates were measured with an accuracy of 1%. The heat release index was calculated based on air consumption. The ratio of tunnel width to tunnel height varied between 1.33 and 2 on the physical models. The results obtained show that the characteristic gradient factor of the critical velocity varies linearly with the tunnel slope to 6 %, and its numerical value depends on the heat release rate. The numerical simulation results show that after algebraically adding the ventilation and fire-induced drafts, the fire-induced draft becomes dominant when the tunnel slope exceeds 3% and the fire power exceeds 30 MW. In laboratory experiments, a similar effect was not observed due to the insufficient strength of the model fire.
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Grishaeva, I. "PROSPECTS FOR USING SECONDARY DAIRY RAW MATERIALS IN PROCESSING MARAL MEAT." In SCIENTIFIC SUPPORT FOR LIVESTOCK BREEDING IN SIBERIA. Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS, 2024. https://doi.org/10.52686/conferencearticle_67597cf4a87447.91906776.
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The use of enzymatic ultrasonic hydrolysis makes it possible to process the skin of deer antlers and obtain a concentrate balanced in fatty acids. The ratio of polyunsaturated and saturated fatty acids in antler samples refers to the “Ideal Lipid”. The fatty acid composition of concentrates from the base of antlers and the skin of antlers is represented by 38 fatty acids, with quite high values of Omega 3 and Omega 6.
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Dugo, Paola, Francesca Rigano, and Luigi Mondello. "Lipidomic analysis in food: The role of a detailed elucidation of intact lipids in functional foods for investigating on nutritional aspects." In 2022 AOCS Annual Meeting & Expo. American Oil Chemists' Society (AOCS), 2022. http://dx.doi.org/10.21748/chnd8051.
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The growing demand in natural matrices, representing a source of dietary and nutraceutical molecules, placed, as direct consequence, the urgent need for the development of suitable analytical methods able to provide a comprehensive characterization of both “conventional” and “unconventional” products. In the last decades, lipidomic has emerged as a cutting-edge approach among omics- techniques, since lipids revealed to be essential molecules in the regulation of metabolic pathways. To this regard, the content of essential fatty acids (EFAs), as well as nutritional indices such as the levels of omega-3 and omega-6 FAs and their ratio are essential parameter to evaluate the beneficial properties of food products. In addition, the investigation of complex lipids in their native forms is proved to be crucial to obtain additional information about lipids role and on FA arrangement into each species. For this reason, the present study is aimed to a detailed elucidation of intact lipids in different functional foods, including the profiling of microalgae, hemp products and the wastes of the fish industry. Phospholipids and triacylglycerols were the most representative lipid classes. However, mono- and diacylglycerols, pigments and carotenoids were also detected, representing an added value for the investigated matrices. From an analytical point of view, the use of a recently introduced linear retention index (LRI) approach in LC paved the way for the automatization of the identification process in LC. Furthermore, the use of high-resolution chromatographic techniques (that is UHPLC), even combined with selective tandem MS operation mode allowed for the determination of the entire lipidome with high sensitivity. Finally, the UHPLC-MS/MS platform was coupled to a preparative workstation to fully automatize the analytical work-flow. This also entailed the miniaturization of the lipid extraction procedure, which was compared with a conventional manual procedure, resulting in quite similar quali-quantitative profiles.
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Zhu, Zongjian, Weiqin Jiang, John N. McGinley, Andrea Manni, Karam El-Bayoumy, and Henry J. Thompson. "Abstract 3696: Effect of dietary omega-3/omega-6 ratio on mammary carcinogenesis, circulating biomarkers and molecular regulators in rats." In Proceedings: AACR 102nd Annual Meeting 2011‐‐ Apr 2‐6, 2011; Orlando, FL. American Association for Cancer Research, 2011. http://dx.doi.org/10.1158/1538-7445.am2011-3696.
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Winikka, L., D. Quach, B. Harlow, et al. "Abstract P1-03-12: The ratio of omega-3 to omega-6 PUFAs impact cancer cell phenotype in the tumor microenvironment." In Abstracts: 2017 San Antonio Breast Cancer Symposium; December 5-9, 2017; San Antonio, Texas. American Association for Cancer Research, 2018. http://dx.doi.org/10.1158/1538-7445.sabcs17-p1-03-12.
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Zhu, Zongjian, John N. McGinley, Weiqin Jiang, Andrea Manni, Karam El-Bayoumy, and Henry J. Thompson. "Abstract 2873: Elucidation of dietary omega-6/omega-3 ratio effects on chemopreventive activity using mammographic density as a surrogate marker in rats." In Proceedings: AACR 101st Annual Meeting 2010‐‐ Apr 17‐21, 2010; Washington, DC. American Association for Cancer Research, 2010. http://dx.doi.org/10.1158/1538-7445.am10-2873.
Full textReports on the topic "Omega-6/omega-3 ratio value"
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Bennett, Alan B., Arthur Schaffer, and David Granot. Genetic and Biochemical Characterization of Fructose Accumulation: A Strategy to Improve Fruit Quality. United States Department of Agriculture, 2000. http://dx.doi.org/10.32747/2000.7571353.bard.
Full textAbstract:
The goal of the research project was to evaluate the potential to genetically modify or engineer carbohydrate metabolism in tomato fruit to enhance levels of fructose, a sugar with nearly twice the sweetness value of other sugars. The specific research objectives to achieve that goal were to: 1. Establish the inheritance of a fructose-accumulating trait identified in F1 hybrids of an inferspecific cross between L. hirsutum XL. esculentum and identify linked molecular markers to facilitate its introgression into tomato cultivars. This objective was completed with the genetic data indicating a single major gene, termed Fgr (Fructose glucose ratio), that controlled the partitioning of hexose in the mature fruit. Molecular markers for the gene, were developed to aid introgression of this gene into cultivated tomato. In addition, a second major gene encoding fructokinase 2 (FK2) was found to be a determinant of the fructose to glucose ratio in fruit. The relationship between FK2 and Fgr is epistatic with a combined synergistic effect of the two hirsutum-derived genes on fructose/glucose ratios. 2. Characterize the metabolic and transport properties responsible for high fructose/glucose ratios in fructose-accumulating genotypes. The effect of both the Fgr and FK2 genes on the developmental accumulation of hexoses was studied in a wide range of genetic backgrounds. In all backgrounds the trait is a developmental one and that the increase in fructose to glucose ratio occurs at the breaker stage of fruit development. The following enzymes were assayed, none of which showed differences between genotypes, at either the breaker or ripe stage: invertase, sucrose synthase, FK1, FK2, hexokinase, PGI and PGM. The lack of effect of the FK2 gene on fructokinase activity is surprising and at present we have no explanation for the phenomenon. However, the hirsutum derived Fgr allele was associated with significantly lower levels of phosphorylated glucose, G1c-1-P and G1c-6-P and concomitantly higher levels of the phosphorylated fructose, Fru-6-P, in both the breaker and ripe stage. This suggests a significant role for the isomerase reaction. 3. Develop and implement molecular genetic strategies for the production of transgenic plants with altered levels of enzymes that potentially control fructose/glucose ratios in fruit. This objective focused on manipulating hexokinase and fructokinase expression in transgenic plants. Two highly divergent cDNA clones (Frk1 and Frk2), encoding fructokinase (EC 2.7.1.4), were isolated from tomato (Lycopersicon esculentum) and a potato fructokinase cDNA clone was obtained from Dr. Howard Davies. Following expression in yeast, each fructokinase was identified to code for one of the tomato or potato fructokinase isoforms Transgenic tomato plants were generated with the fructokinase cDNA clone in both sense and antisense orientations and the effect of the gene on tomato plants is currently being studied.
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Chou, Roger, Azrah Y. Ahmed, Tracy Dana, et al. Living Systematic Review on Cannabis and Other Plant-Based Treatments for Chronic Pain: 2024 Update. Agency for Healthcare Research and Quality (AHRQ), 2024. https://doi.org/10.23970/ahrqepccer250.2024update.
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Objectives. To update the evidence on benefits and harms of cannabinoids and other plant-based compounds to treat subacute and chronic pain in adults and adolescents using a living systematic review approach. Data sources. Ovid® MEDLINE®, PsycINFO®, Embase®, the Cochrane Library, and SCOPUS® databases, and reference lists of included studies were searched to June 30, 2024. Review methods. We grouped studies based on their tetrahydrocannabinol (THC) to cannabidiol (CBD) ratio and by product type: synthetic, purified (plant-derived product consisting of a single cannabinoid, e.g., dronabinol or CBD), or extracted (from whole plant, containing multiple cannabinoids). We conducted random effects meta-analyses and categorized magnitude of benefit (large, moderate, small, or no effect [less than small]). Results. Three new randomized controlled trials (RCTs) in four publications (n=134, 86, and 60) and two new observational studies (N=296 and 32,332) were added for this annual update; no study addressed subacute pain or adolescents. One new RCT compared high THC, low THC, and combination THC to CBD ratio products versus placebo in patients with neuropathic pain; one new RCT evaluated oral CBD plus paracetamol versus paracetamol alone for knee osteoarthritis; and one new RCT evaluated a topical (intraoral) CBD product versus placebo for temporomandibular disorders. Since the inception of this living review, from 5,894 total abstracts identified, 26 RCTs (in 27 publications) (N=2,315) and 12 observational studies (N=48,468) assessing different cannabinoids have been included; no study evaluated kratom. Studies were primarily short term, and 53 percent enrolled patients with neuropathic pain. Comparators were primarily placebo or usual care. Strength of evidence (SOE) was low unless indicated otherwise. Compared with placebo, extracted, comparable ratio THC to CBD oral spray was associated with a small decrease in pain severity (7 RCTs, N=878, 0 to 10 scale, mean difference [MD] −0.54, 95% confidence interval [CI] −0.95 to −0.19, I2=39%; SOE: moderate); improvement in overall function favored the cannabis product but was slightly below the threshold for small (negative values for function indicate improved function; 6 RCTs, N=616, 0 to 10 scale, MD −0.42, 95% CI −0.73 to −0.16, I2=32%; SOE: moderate) versus placebo. There was no effect on study withdrawals due to adverse events (WAEs). There was a large increased risk of dizziness and sedation, and a moderate increased risk of nausea (dizziness: 6 RCTs, N=866, relative risk [RR] 3.57, 95% CI 2.42 to 5.60, I2=0%; sedation: 6 RCTs, N=866, RR 5.04, 95% CI 2.10 to 11.89, I2=0%; and nausea: 6 RCTs, N=866, RR 1.79, 95% CI 1.19 to 2.77, I2=0%). Synthetic and purified high THC to CBD ratio products were associated with a small improvement in pain severity, with no effect on overall function or disability. There was a moderate increase in risk of WAEs, a moderate increase in sedation, and a large increase in risk of nausea (pain: 8 RCTs, N=507, 0 to 10 scale, MD −0.78, 95% CI −1.59 to −0.08, I2=64%; WAEs: 6 RCTs, N=487, RR 1.92, 95% CI 1.10 to 4.80, I2=0%; sedation: 5 RCTs, N=458, RR 1.57, 95% CI 1.11 to 2.29, I2=0%; nausea: 4 RCTs, N=425, RR 2.12, 95% CI 1.09 to 3.96; I²=0%). There was also moderate SOE for a large increased risk of dizziness (4 RCTs, N=425, RR 2.30, 95% CI 1.53 to 3.52, I2=22%). Synthetic or purified oral CBD alone was not associated with decreased pain intensity (4 RCTs, N=334, 0 to 10 scale, MD 0.40, 95% CI −0.14 to 1.00, I2=20%; SOE: moderate), greater likelihood of pain response (4 RCTs, N=334, RR 0.84, 95% CI 0.62 to 1.10; I2=0%; SOE: moderate), or improved function (3 RCTs, N=272, standardized mean difference [SMD] 0.11, 95% CI −0.14 to 0.41, I2=0%; SOE: moderate) versus placebo, and combined oral THC plus CBD (~1:2 ratio) was not associated with decreased pain intensity (2 RCTs, N=123, 0 to 10 scale, MD 0.12, 95% CI −0.71 to 0.93, I2=0%), greater likelihood of experiencing ≥30 percent improvement in pain (2 RCTs, N=123, RR 1.07, 95% CI 0.73 to 1.57, I2=0%), or improved function (1 RCT, n=60, SMD 0.29, 95% CI −0.21 to 0.80) versus placebo. Evidence (including observational studies) on whole-plant cannabis, topical CBD, other cannabinoids, comparisons with active noncannabis treatments or between cannabis-related products, and impact on use of opioids remained insufficient. Evidence was not available on important harms such as psychosis, cannabis use disorder, and cognitive effects. Conclusions. Low- to moderate-strength evidence suggests small improvements in pain (mostly neuropathic) and moderate to large increases in common adverse events (dizziness, sedation, nausea) with extracted, comparable THC to CBD ratio and synthetic or purified high THC to CBD ratio products versus placebo during short-term treatment (1 to 6 months). Low- to moderate-strength evidence suggests that low THC to CBD ratio products may not be associated with improved outcomes versus placebo. Evidence for whole-plant cannabis and other comparisons, outcomes, and plant-based compounds was unavailable or insufficient to draw conclusions.
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Rahmani, Mehran, Xintong Ji, and Sovann Reach Kiet. Damage Detection and Damage Localization in Bridges with Low-Density Instrumentations Using the Wave-Method: Application to a Shake-Table Tested Bridge. Mineta Transportation Institute, 2022. http://dx.doi.org/10.31979/mti.2022.2033.
Full textAbstract:
This study presents a major development to the wave method, a methodology used for structural identification and monitoring. The research team tested the method for use in structural damage detection and damage localization in bridges, the latter being a challenging task. The main goal was to assess capability of the improved method by applying it to a shake-table-tested prototype bridge with sparse instrumentation. The bridge was a 4-span reinforced concrete structure comprising two columns at each bent (6 columns total) and a flat slab. It was tested to failure using seven biaxial excitations at its base. Availability of a robust and verified method, which can work with sparse recording stations, can be valuable for detecting damage in bridges soon after an earthquake. The proposed method in this study includes estimating the shear (cS) and the longitudinal (cL) wave velocities by fitting an equivalent uniform Timoshenko beam model in impulse response functions of the recorded acceleration response. The identification algorithm is enhanced by adding the model’s damping ratio to the unknown parameters, as well as performing the identification for a range of initial values to avoid early convergence to a local minimum. Finally, the research team detect damage in the bridge columns by monitoring trends in the identified shear wave velocities from one damaging event to another. A comprehensive comparison between the reductions in shear wave velocities and the actual observed damages in the bridge columns is presented. The results revealed that the reduction of cS is generally consistent with the observed distribution and severity of damage during each biaxial motion. At bents 1 and 3, cS is consistently reduced with the progression of damage. The trends correctly detected the onset of damage at bent 1 during biaxial 3, and damage in bent 3 during biaxial 4. The most significant reduction was caused by the last two biaxial motions in bents 1 and 3, also consistent with the surveyed damage. In bent 2 (middle bent), the reduction trend in cS was relatively minor, correctly showing minor damage at this bent. Based on these findings, the team concluded that the enhanced wave method presented in this study was capable of detecting damage in the bridge and identifying the location of the most severe damage. The proposed methodology is a fast and inexpensive tool for real-time or near real-time damage detection and localization in similar bridges, especially those with sparsely deployed accelerometers.