Relevant bibliographies by topics / Lecithin – Physiological effect

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Academic literature on the topic 'Lecithin – Physiological effect'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Lecithin – Physiological effect"

1

Lichszteld, Krzysztof, Zygmunt Machoy, and Anna Stępińska. "Chemiluminescence in the Coupled Oxidation of Lecithin and Ascorbate." Zeitschrift für Naturforschung C 40, no. 3-4 (April 1, 1985): 223–26. http://dx.doi.org/10.1515/znc-1985-3-415.

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Chemiluminescence (CL) that appears during oxidation of lecithin and ascorbate has been studied. A simple system consisting only of purified lecithin, which has one double bond, and ascorbate as a physiological reductant with a low redox potential, was used. The CL spectrum of lecithin contain a strong band lying in the near infrared, and three bands at 20 900 cm-1, 17 700 cm-1 and 15 800 cm-1, being characteristic of singlet molecular oxygen (1O2). The effect of 1O2 quenchers on both autooxidation processes has also been investigated. The obtained results indicate that the main emitter is the 1O2. An addition of ascorbate to the system lecithin plus buffer causes a decrease of CL intensity. That is a result of stronger quenching properties of ascorbate and not due to efficiency of the generation of 1O2.
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Attia, Youssef Abd El-Wahab, Abd El-Hamid El-Syed Abd El-Hamid, Maria Cristina de Oliveira, Sameer Attiyah Nagadi, Kamel Ibrahim Kamel, El-Shohat Mohamed Qota, and Tarek Abd-Allah Sadaka. "Physiological parameters and productive performance of rabbit does and their offsprings with dietary supplementation of soy lecithin." Pesquisa Agropecuária Brasileira 53, no. 9 (September 2018): 1078–85. http://dx.doi.org/10.1590/s0100-204x2018000900012.

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Abstract: The objective of this work was to evaluate the effect of a dietary supplementation with soy lecithin (SL) on the productive performance and blood constituents of rabbit females and their offsprings. A total of 40 rabbits does were distributed into four treatments: control group, no dietary SL inclusion; and three groups with 0.5, 1.0, and 1.5% SL inclusion in the diets. The inclusion of 1.5% SL increased the count of blood cells and hemoglobin concentrations; 0.5-1.0% SL reduced the total cholesterol levels in the blood, as well as the low-density lipoprotein-cholesterol and the activities of the enzymes alkaline phosphatase, aspartate aminotransferase, and alanine aminotransferase, but increased the levels of total lipids, triglycerides, high-density lipoprotein-cholesterol, and the activities of the antioxidant enzymes. Supplementation with 1.0-1.5% SL resulted in higher milk production and heavier litters. Soy lecithin supplementation at 1% improves the physiological parameters and increases the milk production of rabbit does, also improving the performances of their offsprings.
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3

Vater, Claudia, Alexandra Apanovic, Christoph Riethmüller, Brigitte Litschauer, Michael Wolzt, Claudia Valenta, and Victoria Klang. "Changes in Skin Barrier Function after Repeated Exposition to Phospholipid-Based Surfactants and Sodium Dodecyl Sulfate In Vivo and Corneocyte Surface Analysis by Atomic Force Microscopy." Pharmaceutics 13, no. 4 (March 24, 2021): 436. http://dx.doi.org/10.3390/pharmaceutics13040436.

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(1) Background: The aim of the study was to evaluate the effect of pure lecithins in comparison to a conventional surfactant on skin in vivo. (2) Methods: Physiological skin parameters were evaluated at the beginning and the end of the study (day 1 and day 4) (n = 8, healthy forearm skin) with an Aquaflux®, skin-pH-Meter, Corneometer® and an Epsilon® sensor. Confocal Raman spectroscopy was employed to monitor natural moisturizing factor, urea and water content of the participants’ skin. Tape strips of treated skin sites were taken and the collected corneocytes were subjected to atomic force microscopy. Circular nano objects were counted, and dermal texture indices were determined. (3) Results: Transepidermal water loss was increased, and skin hydration was decreased after treatment with SDS and LPC80. Natural moisturizing factor and urea concentrations within the outermost 10 µm of the stratum corneum were lower than after treatment with S75 or water. Dermal texture indices of skin treated with SDS were higher than skin treated with water (control). (4) Conclusions: Results suggest very good (S75) or good (LPC80) skin-tolerability of lecithin-based surfactants in comparison to SDS and encourage further investigation.
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4

Subbaiah, Papasani Venkata, Xian-Cheng Jiang, Natalia A. Belikova, Buzulagu Aizezi, Zhi Hua Huang, and Catherine A. Reardon. "Regulation of plasma cholesterol esterification by sphingomyelin: Effect of physiological variations of plasma sphingomyelin on lecithin-cholesterol acyltransferase activity." Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids 1821, no. 6 (June 2012): 908–13. http://dx.doi.org/10.1016/j.bbalip.2012.02.007.

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5

Rahnama, Mostafa, Mehrdad Bouyeh, Isam Kadim, Alireza Seidavi, Mona M. M. Y. Elghandour, Poonooru Ravi Kanth Reddy, José Cedillo Monroy, and Abdelfattah Z. M. Salem. "Effect of dietary inclusion of lecithin with choline on physiological stress of serum cholesterol fractions and enzymes, abdominal fat, growth performance, and mortality parameters of broiler chickens." Animal Biotechnology 31, no. 6 (June 23, 2019): 483–90. http://dx.doi.org/10.1080/10495398.2019.1622557.

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6

Javitt, Norman B. "History of hepatic bile formation: old problems, new approaches." Advances in Physiology Education 38, no. 4 (December 2014): 279–85. http://dx.doi.org/10.1152/advan.00076.2014.

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Studies of hepatic bile formation reported in 1958 established that it was an osmotically generated water flow. Intravenous infusion of sodium taurocholate established a high correlation between hepatic bile flow and bile acid excretion. Secretin, a hormone that stimulates bicarbonate secretion, was also found to increase hepatic bile flow. The sources of the water entering the biliary system with these two stimuli were differentiated by the use of mannitol. An increase in its excretion parallels the increase in bile flow in response to bile acids but not secretin, which led to a quantitative distinction between canalicular and ductular water flow. The finding of aquaglyceroporin-9 in the basolateral surface of the hepatocyte accounted for the rapid entry of mannitol into hepatocytes and its exclusion from water movement in the ductules where aquaporin-1 is present. Electron microscopy demonstrated that bile acids generate the formation of vesicles that contain lecithin and cholesterol after their receptor-mediated canalicular transport. Biophysical studies established that the osmotic effect of bile acids varies with their concentration and also with the proportion of mono-, di-, and trihydroxy bile acids and provides a basis for understanding their physiological effects. Because of the varying osmotic effect of bile acids, it is difficult to quantify bile acid independent flow generated by other solutes, such as glutathione, which enters the biliary system. Monohydroxy bile acids, by markedly increasing aggregation number, severely reduce water flow. Developing biomarkers for the noninvasive assessment of normal hepatic bile flow remains an elusive goal that merits further study.
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7

Lund, Ivar, Najlae El Kertaoui, Marisol S. Izquierdo, David Dominguez, Benni W. Hansen, and Patrick Kestemont. "The importance of phospholipids combined with long-chain PUFA in formulated diets for pikeperch (Sander lucioperca) larvae." British Journal of Nutrition 120, no. 6 (July 30, 2018): 628–44. http://dx.doi.org/10.1017/s0007114518001794.

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AbstractDietary phosphoglycerides and n-3 long-chain PUFA (LC-PUFA) play important functions in the development of pikeperch (Sander lucioperca) larvae. This study aimed to determine optimal dietary levels of soyabean lecithin (SBL)-derived phospholipids (PL) in starter feeds for pikeperch larvae 10–30 d post-hatch (DPH) and examine performance and ontogeny by additional supplementation of n-3 LC-PUFA in the form of Algatrium DHA 70 (glyceride product; 660–700 mg/g DHA; EPA 60–75 mg/g). In total, six isoproteic and isoenergetic extruded diets were formulated with increasing levels of PL (3·7, 8·3 or 14·5 % wet weight (w.w.), respectively); however, three of the diets were supplemented with three levels of Algatrium DHA 70 (0·6, 2·0 or 3·4 %, respectively). Liver proteomic analyses of larvae at 30 DPH were included for effects of PL and primarily DHA on performance, physiological expression and interactions in larval proteins. In addition, bone anomalies, digestive enzymatic activity, candidate gene expression and skeleton morphogenesis were examined. Results confirmed the importance of dietary PL levels of at least 8·2 % w.w., and an additional beneficiary effect of supplementation with DHA plus EPA. Thus, combined supplementation of SBL (up to 14·51 % w.w. PL) and n-3 LC-PUFA (1·004 % DM DHA and 0·169 % DM EPA) in the form of TAG resulted in highest growth and lowest incidence of anomalies, improved digestive enzyme activity and had differential effect on liver proteomics. The results denote that essential fatty acids can be supplemented as TAG to have beneficial effects in pikeperch larvae development.
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8

Wecker, Lynn. "Neurochemical effects of choline supplementation." Canadian Journal of Physiology and Pharmacology 64, no. 3 (March 1, 1986): 329–33. http://dx.doi.org/10.1139/y86-054.

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Whether or not the brain can use supplemental choline to enhance the synthesis of acetylcholine (ACh) is an important consideration for assessing the merits of using choline or phosphatidylcholine (lecithin) for the treatment of neuropsychiatric disorders postulated to involve hypocholinergic activity. While it is well documented that administered choline is incorporated into ACh, the ability of supplemental choline to increase the synthesis and release of ACh has been questionable. Studies in my laboratory have demonstrated that acute or chronic choline supplementation does not, by itself, enhance the levels of ACh in brain under normal biochemical and physiological conditions. However, supplemental choline prevents the depletion of ACh in brain induced by numerous pharmacological agents that increase the firing of cholinergic neurons. Since the levels of free choline in brains from supplemented rats were not different from controls prior to drug challenge, evidence suggested that the observed effects of choline were mediated by alterations in the mobilization of choline from choline-containing compounds. Studies investigating the release of choline from brain indicated that more choline was released per unit time in tissues from choline-supplemented rats than from controls. In addition, brain tissue from choline-supplemented rats had increased concentrations of total lipid phosphorus as compared with controls. Hence, although choline supplementation does not alter the levels of ACh in brain under normal conditions, it does appear to support ACh synthesis during drug-induced increases in neuronal activity, an effect most likely mediated by alterations in the metabolism of choline-containing phospholipids.
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9

Sanyal, Sankar N. "Evidence for the presence of a glycosphingolipid-transfer protein in rat brain cytosol." Biochemistry and Cell Biology 65, no. 5 (May 1, 1987): 493–500. http://dx.doi.org/10.1139/o87-063.

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Proteins in the postmicrosomal supernatant fraction of rat brain catalyzed the transfer of bovine brain galactocerebroside, sulfatide, and ganglioside GM1 from unilamellar liposomes to the rat erythrocytes or ghosts. The vesicles were made with egg yolk lecithin, cholesterol, 3H-labelled glycolipid, and a trace of [14C]triolein as a nonexchangeable marker. The routine assay of the glycosphingolipid transfer consisted of incubation of the donor liposomes with erythrocytes in the presence or absence of supernatant protein in physiological buffer at 37 °C for various time intervals. After the incubation, the erythrocytes were separated from the vesicles by centrifugation and the extent of protein-catalyzed transfer of labelled glycolipid in the membrane-bound total lipid fraction was determined by scintillation spectrometry. The fraction of [3H]glycosphingolipid transferred is represented by a change in the 3H/14C ratios at initial and subsequent time intervals. The glycosphingolipid transfer catalyzed by the supernatant protein was found to be logarithmic, whereas the protein-independent transfer was linear over a period of 3–4 h. The rate constant (K) and half time (t1/2) of the protein-catalyzed transfer reaction of cerebrosides and sulfatides were almost the same, while the transfer of ganglioside GM1 occurred at a slightly faster rate, probably owing to the greater aqueous solubility of this lipid. The transfer activity was also increased in a manner dependent on the amount of supernatant protein added up to 10 mg. The catalytic activity of the protein was lost when heated at 70 °C for 5 min. The pH optimum of the activity was around 7.4. Divalent metal ions Ca2+, Mg2+, and Mn2+ at a concentration of 0.1–2.0 mM had no appreciable effect on the transfer of cerebroside. However, Ca2+ at the concentration tested notably inhibited sulfatide transfer. Approximately, 3–5 pmol of the glycosphingolipids was transferred from the vesicles to the erythrocytes per milligram of supernatant protein per hour. The transferred radioactivity can be exclusively recovered in the red cell membrane bound glycolipid fraction, as analyzed by high performance liquid chromatography. The active material was partially purified (over 30-fold) by ammonium sulfate precipitation and gel permeation chromatography on Sephadex G-75, with an indicated molecular weight of about 21 000.
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10

Nishimukai, Megumi, Hiroshi Hara, and Yoritaka Aoyama. "Enteral administration of soyabean lecithin enhanced lymphatic absorption of triacylglycerol in rats." British Journal of Nutrition 90, no. 3 (September 2003): 565–71. http://dx.doi.org/10.1079/bjn2003946.

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As the physiological roles of dietary lecithin have not yet been clearly defined, we examined the effects of lecithin on lipid absorption in male Wistar rats with a mesenteric lymph cannula. Lymphatic absorption was observed after the infusion of 1 ml emulsion containing 100 mg test oil emulsified with sodium taurocholate (10 g/l) in three separate experiments. Test oils (100 mg) were: soyabean oil (triacylglycerol (TG) source, SO) and soyabean oil + lecithin (75 mg soyabean oil+25 mg lecithin, LE) in Expt 1; SO, LE or soyabean oil + lysolecithin (75 mg soyabean oil plus 25 mg lysolecithin, LY) in Expt 2; hydrolysed soyabean oil (HSO) or HSO+lysolecithin (75 mg HSO+25 mg lysolecithin, HLY) in Expt 3. After LE and LY infusions, lymph flow and the lymphatic output of TG was higher than after SO infusion at 0-30 min and 0-90 min respectively (Expts 1 and 2). Lecithin-induced increases in lymph TG output remained constant when HSO was infused (Expt 3). There were no differences in the TG:phospholipid ratio in the lymph after infusion among the groups; nevertheless, the lymphatic output of TG was much higher after infusion with LE than with SO. Fatty acid was released more efficiently from SO than from LE and LY by in vitro digestion with rat bile–pancreatic juice. These present results demonstrate that a TG emulsion containing soyabean lecithin or its hydrolysates promote lymphatic TG output and suggest that the increases in TG absorption do not depend on TG digestion.
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Dissertations / Theses on the topic "Lecithin – Physiological effect"

1

Van, Wormer Deborah M. "Effect of lecithin and source and level of fat in starter pig diets on performance and nutrient utilization." 1985. http://hdl.handle.net/2097/27567.

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2

Chin-Yi, Yu, and 余靚儀. "The effects of soybean lecithin supplementation on physiological responses and exercie performance of badminton players." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/69649631280477587304.

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碩士
輔仁大學
食品營養學系
87
Choline, an important precursor for the synthesis of the neurotransmitter- acetylcholine (ACh), along with fatty acid, glycerol and phophorous acid, are the components of lecithin (phosphatidylcholine). A substantial amount of choline is required to synthesize acetylcholine in cholinergic activation on the skeletal muscles during prolonged exercise. Thirteen badminton male players were randomly divided into two groups (lecithin or placebo group) and performed prolonged exercise at 60% VO2max work load. After one week, the subjects either ingest 14.4 g lecithin or placebo (malto dextrin) one hour before the same prolonged exercise. The purpose of this study is to examine the effects of supplemental lecithin on the physiological responses and exercise performance of badminton players. The results showed that there were no significant differences in serum glucose concentrations of pre- and post-exercise, but higher serum free fatty acids and serum lactate concentrations at post-exercise than pre-exercise (p0.05), and lower plasma choline concentrations at post-exercise than pre-exercise (p0.05). After lecithin supplement, there was no significant difference in the concentration of plasma choline. The supplemental lecithin would not affect the concentrations of serum glucose and serum free fatty acids, maximal respiratory exchange ratio and maximal oxygen uptake, but longer time of exhaustion, higher respiratory exchange ratio and serum lactate of post-exercise by lecithin supplementation. In summary, the effect of lecithin supplementation would promote carbohydrate oxidative metabolism and maintain plasma choline concentration for the synthesis of the acetylcholine during endurance exercise that could delay fatigue and significant improvement on endurance exercise performance.
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Books on the topic "Lecithin – Physiological effect"

1

International Colloquium on Lecithin (4th 1986 Chicago, Ill.). Lecithin: Technological, biological, and therapeutic aspects. New York: Plenum Press, 1987.

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2

Kōzu, Kenʾichi. Taberu dake de IQ, EQ ga takamaru: Mugen no senzai nōryoku o hikidasu "jinnō ekisu" tsui ni kaihatsu. Tōkyō: Daiseikō Shuppan, 1999.

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3

Lecithin:Technological, Biological, and Therapeutic Aspects (Advances in Behavioral Biology). Springer, 1988.

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4

Phosphatidylcholine: Biochemical and Clinical Aspects of Essential Phospholipids. Springer, 2011.

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Journal articles
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