Academic literature on the topic 'Persea Americana (HEPA)'

The present study was undertaken to evaluate the protective role of hydroethanolic leaves extract of The present study was undertaken to evaluate the protective role of Hydroethanolic leaves<em> Persea americana</em> (HEPA) against reproductive toxicity induced by Antouka Super^® (AS) in male Japanese quail. The study was carried out in the Teaching and Research Farm of University of Dschang between February and May 2016. Forty (40) immature male Japanese quails (28 days old), were divided into five groups of 8 birds each and subjected to the following treatments: Group 1, birds receiving 10 ml/kg b.w of distilled water (negative control group (CO-); Group 2, birds receiving 75 mg of AS/kg (positive control group (CO+). while groups 3, 4 and 5 were administered 50, 100 and 200 mg/ kg b.w of HEPA respectively together with AS at 75 mg/kg. All the test solutions were orally administered once a day for 60 days using an endogastric canule. Dissection of the vas deferent was performed to obtain spermatozoa. The protective effects of HEPA on the organ weights, serum hormones, oxidative stress biomarkers, sperm characteristics and histology changes in the testes were evaluated. Results revealed that exposure to AS significantly (p&lt;0.05) decreased reproductive organ weights (testes, epididymis and vas deferens); the levels of testicular proteins and of serum hormones (LH, FSH and Testosterone). This insecticide also significantly (p&lt;0.05) decreased sperm characteristics (mobility, viability and density) and fertility indices (percentage of fertile eggs, hatching rate and chick survival rate after hatching), and increased the sperm abnormalities (minor and major) and the embryonic and post-embryonic mortality rate. In addition, the activities of superoxide dismutase (SOD), total peroxidase (POD) and catalase (CAT) significantly (p&lt;0.05) decreased in the testes of AS treated quails. While the level of malondialdehyde (MDA) significantly (p&lt;0.05) increased compared with the values recorded in the negative control group birds. Histopathological examination of the testes of AS treated quails revealed testicular lesions characterized by moderate to severe degenerative changes of seminiferous tubules and incomplete spermatogenesis. Administration of HEPA to treated birds alleviates the reproductive toxicity and testicular oxidative damage induced by AS. Thus, exposure of male Japanese quails to AS induce oxidative stress and impairment on the reproductive parameters. These effects can be mitigated by the administration of HEPA.

Tanaman alpukat (Persea americana Mill) merupakan salah satu jenis tanaman yang banyak digunakan sebagai obat tradisional. Daun alpukat menghasilkan senyawa metabolit sekunder yang berpotensi untuk dikembangkan sebagai obat antikanker dan aktivitas antioksidan. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian ekstrak etil asetat daun alpukat terhadap sel kultur HeLa dan menentukan aktivitas sitotoksiknya. Penelitian ini menggunakan pelarut etil asetat untuk mengekstraksi daun alpukat dan pengujian aktivitas sitotoksik menggunakan metode Microculture tetrazolium test dengan berbagai variasi konsentrasi uji. Dari hasil penelitian, ekstrak etil asetat daun alpukat mempengaruhi pertumbuhan sel HeLa, peningkatan konsentrasi menurunkan persentase viabilitas sel HeLa. Dari hasil pengujian, ekstrak etil asetat daun alpukat memiliki aktivitas sitotoksik yang berada dalam kategori toksik dengan nilai IC50 139,2515 μg/mL. Dari hasil penelitian dapat disimpulkan bahwa ekstrak etil asetat daun alpukat dapat mempengaruhi pertumbuhan sel dan memiliki aktivitas sitotoksik terhadap sel HeLa

Abstract The antiplasmodium assay-guided investigation of the roots, stem bark, and leaves of Persea americana Mill. led to the isolation of a new fatty alcohol, perseatriol (1), along with six known compounds (2–7). Their structures were elucidated based on the analysis of their NMR and MS data. All crude extracts and fractions exhibited good antiplasmodial activity on Plasmoduim falciparum 3D7 with IC50 values ranging from 0.76 to 10.5 μg/mL; they also displayed cytotoxicity against HeLa cells with low selectivity indexes (SIs). A preliminary Plasmodium lactate dehydrogenase (pLDH) assay was also performed on the isolated compounds. 9,9′-Di-O-feruloyl-5,5′-dimethoxysecoisolariciresinol (4) turned out to be non-toxic and displayed the best activities on P. falciparum with an IC50 value of 0.05 μM, comparable to the reference drug chloroquine with an IC50 value of 0.03 μM. Furthermore, besides compound 4, this work reports the first isolation of lutein (2) and scopoletin (3) from P. americana. The crude extracts of roots, stem bark, and leaves of P. americana, their fractions and compounds completely suppressed the growth of P. falciparum. The observed activity supports the use of P. americana in folk medicine for the treatment of malaria.

The aim of this study was to assess the biological effect of organically coated Grias neuberthii (piton) fruit and Persea americana (avocado) leaves nanoparticles (NPs) on cervical cancer (HeLa) and breast adenocarcinoma (MCF-7) cells with an emphasis on gene expression (p53 transcription factor and glutathione-S-transferase GST) and cell viability. UV-Vis spectroscopy analysis showed that synthesized AgNPs remained partially stable under cell culture conditions. HeLa cells remained viable when exposed to piton and avocado AgNPs. A statistically significant, dose-dependent cytotoxic response to both AgNPs was found on the breast cancer (MCF-7) cell line at concentrations above 50 µM. While expression levels of transcription factor p53 showed downregulation in treated MCF-7 and HeLa cells, GST expression was not affected in both cell lines treated. Cell viability assays along with gene expression levels in treated MCF-7 cells support a cancer cell population undergoing cell cycle arrest. The selective toxicity of biosynthesized piton/avocado AgNPs on MCF-7 cells might be of value for novel therapeutics.

&#x0D; &#x0D; &#x0D; &#x0D; Kanker payudara dan servik merupakan kanker dengan jumlah terbanyak di Indonesia. Kemoterapi sebagai terapi kanker memiliki banyak efek samping, oleh karena itu diperlukan pengembangan obat antikanker terutama dari bahan alam yang efektif dan memiliki efek samping minimal. Salah satu bahan alam yang diprediksi mempunyai aktivitas antikanker adalah biji alpukat (Persea americana Mill.). Penelitian ini bertujuan untuk menentukan aktivitas sitotoksik ekstrak etanol biji alpukat pada sel kanker payudara dan serviks secara in silico dan in vitro. Senyawa aktif dalam biji alpukat di docking dengan reseptor estrogen (PDB code: 3ERT) and reseptor SIRT1 (PDB code: 4I5I) menggunakan program Molegro Virtual Docker 5.5 (MVD). Aktivitas sitotoksik secara in vitro dilakukan menggunakan metode Microculture Tetrazolium Technique (MTT) pada sel kanker payudara (MCF7), sel kanker serviks (HeLa) dan sel normal (Vero). Biji alpukat berisi 10 senyawa aktif yang diprediksi mempunyai aktivitas sitotoksik. Hasil uji in silico menunjukkan bahwa epicatechin gallate mempunyai nilai rerank score paling rendah yaitu -118,397 kkal/mol pada reseptor estrogen dan -133,694 kkal/mol pada reseptor SIRT1. Aktivitas sitotoksik secara in vitro ditunjukkan dengan nilai IC50 sebesar 537,37 μg/mL (MCF7), 383,21 μg/mL (HeLa) dan 541,67 μg/mL (Vero). Dari hasil uji in vitro menyatakan bahwa ekstrak etanol biji alpukat tidak memiliki aktivitas sitotoksik pada sel kanker MCF7 dan memiliki aktivitas sitotoksik lemah pada sel HeLa.&#x0D; &#x0D; &#x0D; &#x0D; &#x0D; &#x0D; &#x0D; &#x0D; &#x0D; &#x0D; Breast and cervical cancer are cancers with the highest number in Indonesia. Chemotherapy, as one of the mainstay treatments of cancer, can cause harmful side effects; and, therefore, it is necessary to develop anticancer drug from natural ingredients with good efficacy and minimal side effects. One of the natural ingredients that is predicted to have anticancer activity is avocado seed (Persea americana Mill.). This study aimed to evaluate the in-vitro and in-silico cytotoxic activity of avocado seed extract on breast and cervical cancer cells. The active compounds in avocado seeds were docked with estrogen receptors (PDB code: 3ERT) and SIRT1 receptors (PDB code: 4I5I) using the MVD program. Cytotoxic activity in vitro was carried out using the MTT method on breast cancer cells (MCF7), cervical cancer cells (HeLa) and normal cells (Vero). Avocado seed contains 10 active compounds which are predicted to have cytotoxic activity. The findings from in-silico test showed that the “epicatechin gallate” had the lowest rerank score, i.e. -118.397 kcal/mol for the estrogen receptor and -133.694 kcal/ mol for the SIRT1 receptor. Cytotoxic activity in vitro was shown by IC50 values of 537.37 μg/mL (MCF7), 383.21 μg/mL (HeLa) and 541.67 μg/mL (Vero), respectively. The findings from in-vitro test showed that the avocado seed extract did not have cytotoxic activity on MCF7 cells and had weak cytotoxic activity on HeLa cells.&#x0D; &#x0D; &#x0D; &#x0D;

Avocado leaf ethanol extract as a traditional medicine has been proven to have various pharmacological activities, but the safety of its use is not yet known. This study aims to determine the range of LD50 values, toxic symptoms, changes in body weight, and SGPT SGOT levels of Balb/c mice. The research was carried out experimentally using a fixed dose toxicity test method with a randomized matched pre and post-test control group design. EEDA is made by 70% ethanol maceration. The acute toxicity test consists of 2 stages: preliminary and main tests. Preliminary tests were carried out with a dose of extract 300 mg/kg BW once administered. After 24 hours of observation, there were no toxic symptoms, the test dose was increased to 2000 mg/kg BW. The main test was carried out using 10 test animals which were divided into 2 groups, each given a dose of extract 2000 mg/kg BW once and CMC Na 1% (negative control). Observation of toxic symptoms and death was carried out for 14 days. The LD50 value is determined from the results of toxic symptoms and death of test animals. Toxic symptoms were analyzed descriptively, and changes in body weight and SGOT SGPT levels were analyzed statistically (95% confidence level). The research results show that avocado leaf ethanol extract has an LD50 value range of &gt;2000 mg/kg BW. The test dose of 2000 mg/kg BW did not cause toxic symptoms and death. SGOT and SGPT levels were still within normal limits, however, changes in SGPT levels were significantly different from controls. Thus, an extract dose of 2000 mg/kg BW has an acute toxic effect on the liver of mice.

&lt;p&gt;Administration of high-dose paracetamol may increase metabolic pathways that produce N-acetyl-p-benzoquinonimine (NAPQI). NAPQI is reactive substance, resulting in hepatic tissue damage and increase liver MDA level. Avocado peel extract contains flavonoids that act as antioxidants so it is expected may decrease liver MDA level of high-dose paracetamol administration.&lt;/p&gt;&lt;p&gt;This research used 24 male Wistar rats divided into 3 groups: group of rats fed with standard food, group of rats given paracetamol 1,750 mg/kg BW on day 8, and group of rats given avocado peel extract 1,400 mg/kg/day for 8 days and paracetamol 1750mg/kg BW on day 8. Liver MDA levels were checked on day 9 by thiobarbituric acid&lt;em&gt; &lt;/em&gt;(TBA) method.&lt;/p&gt;&lt;p&gt;The One-Way ANOVA test showed that the liver MDA level of the group of rats given high dose of paracetamol (=312.38±47.830 nmol/g) was significantly higher (p = 0.001) compared to the liver MDA level of the group of rats fed with standard food (=184.50±57.021 nmol/g). The liver MDA level of group of rats given high-dose paracetamol and avocado peel extract&lt;em&gt; &lt;/em&gt;(=268.50±91.834 nmol/g) did not significantly decrease (p =0.213) compared to the liver MDA level of group of rats given high dose of paracetamol (=312.38±47.830 nmol/g).&lt;/p&gt;&lt;p&gt;The conclusion of this research showed that high-dose paracetamol significantly increased liver MDA level and avocado peel extract tend to decrease liver MDA level because avocado peel consists flavonoid, hydroxynnamic acid&lt;em&gt;, &lt;/em&gt;keratinoid, vitamin C, dan vitamin E that function as antioxidants.&lt;/p&gt;&lt;p&gt; &lt;/p&gt;&lt;p&gt;&lt;strong&gt;Keywords&lt;/strong&gt;: &lt;em&gt;Paracetamol, MDA, Persea americana&lt;/em&gt;&lt;/p&gt;

Many medicinal plants species from European -such as Artemisia absinthium, Equisetum arvense, Lamium album, Malva sylvestris, Morus nigra, Passiflora incarnata, Frangula purshiana, and Salix alba- as well as Latin American traditions -such as Libidibia ferrea, Bidens pilosa, Casearia sylvestris, Costus spicatus, Monteverdia ilicifolia, Persea americana, Schinus terebinthifolia, Solidago chilensis, Syzygium cumini, Handroanthus impetiginosus, and Vernonanthura phosphorica- are shortlisted by the Brazilian National Health System for future clinical use. However, they lack many data on their action upon some key ADME targets. In this study, we assess non-toxic concentrations (up to100 μg/ml) of their infusions for in vitro ability to modulate CYP3A4 mRNA gene expression and intracellular glutathione levels in HepG2 cells, as well as P-glycoprotein (P-gp) activity in vincristine-resistant Caco-2 cells (Caco-2 VCR). We further investigated the activation of human pregnane X receptor (hPXR) in transiently co-transfected HeLa cells and the inhibition of Gamma-glutamyl transferase (GGT) in HepG2 cells. Our results demonstrate L. ferrea, C. sylvestris, M. ilicifolia, P. americana, S. terebinthifolia, S. cumini, V. phosphorica, E. arvense, P. incarnata, F. purshiana, and S. alba can significantly increase CYP3A4 mRNA gene expression in HepG2 cells. Only F. purshiana shown to do so likely via hPXR activation. P-gp activity was affected by L. ferrea, F. purshiana, S. terebinthifolia, and S. cumini. Total intracellular glutathione levels were significantly depleted by exposure to all extracts except S. alba and S. cumini This was accompanied by a lower GGT activity in the case of C. spicatus, P. americana, S. alba, and S. terebinthifolia, whilst L. ferrea, P. incarnata and F. purshiana increased it. Surprisingly, S. cumini aqueous extract drastically decreased GGT activity (−48%, p &amp;lt; 0.01). In conclusion, this preclinical study shows that the administration of some of these herbal medicines causes in vitro disturbances to key drug metabolism mechanisms. We recommend active pharmacovigilance for Libidibia ferrea (Mart.) L. P. Queiroz, Frangula purshiana Cooper, Schinus terebinthifolia Raddi, and Salix alba L. which were able to alter all targets in our preclinical study.