نتایج جستجو برای: aaph

تعداد نتایج: 218  

2016
Satish Kumar Girish Chandran RP Singh

Pomegranate (Punica granatum) peel was extracted with water: ethanol (1:1) at room temperature and the extract was evaluated for antioxidant potential against AAPH induced lipid peroxidation in vitro in mice synaptosomes. In addition, its neuroprotective efficacy against rotenone-induced mortality, motor deficits and oxidative stress in Drosophila melanogaster was also assessed. Extract showed ...

2002
Anatol Kontush Barbara Finckh Barbara Karten Alfried Kohlschutter Ulrike Beisiegel

a-Tocopherol is a classical lipophilic antioxidant well known as a scavenger of free radicals in a hydrophobic milieu. However, it can develop both antiand prooxidant activity in isolated low density lipoprotein (LDL). It is unknown how these activities are balanced in vivo in human plasma. We studied oxidation of plasma and LDL isolated from healthy donors or from a patient with familial isola...

اشراقی, آزاده, بدیعی, اکبر, عسگری, صدیقه, نادری, غلامعلی, موحدیان عطار, احمد ,

مقدمه: واکنش‎های اکسیداسیون باعث پیشرفت بیماری‎هایی نظیر آترواسکلروز و دیابت می‎شوند. امروزه مشاهده شده است که آنتی‎اکسیدان‎‎ها در کاهش این واکنش‌های اکسیداسیون، پیشگیری و درمان بیماری‌ها نقش دارند. هدف: در این مطالعه اقدام به بررسی اثرات آنتی‎اکسیدانی گیاهان عناب (Ziziphus vulgaris Lam)، زرشـک (Berberis integerima Bunge)، خرفه (Portulaca oleracea L.) و کنگر (Gundelia tournefortti L.) بر رو...

Journal: :British journal of clinical pharmacology 1996
A Abella C Messaoudi D Laurent D Marot J Chalas J Breux C Claise A Lindenbaum

1. Since oxygen free radicals are directly involved in a variety of pathologies such as atherosclerosis, diabetes mellitus, inflammation and/or when a deficit of defences of the organism against radicals occurs, we developed a suitable and simple method to determine both the erythrocyte sensitivity to an oxidative stress and plasma antioxidant protective capacity. 2. This test is based on the i...

2015
Sakina Razack Kandikattu Hemanth Kumar Ilaiyaraja Nallamuthu Mahadeva Naika Farhath Khanum Antonio Segura-Carretero David Arráez-Román

The study aimed at analyzing the metabolite profile of Nardostachys jatamansi using RP-HPLC, GC-MS and also its antioxidant, biomolecule protective and cytoprotective properties. The 70% ethanolic extract of Nardostachys jatamansi (NJE) showed the presence of polyphenols and flavonoids (gallic acid, catechin, chlorogenic acid, homovanillin, epicatechin, rutin hydrate and quercetin-3-rhamnoside)...

Journal: :Clinical and Developmental Immunology 2005
Qin Yan Zhu Derek D. Schramm Heidrun B. Gross Roberta R. Holt Sun H. Kim Tomoko Yamaguchi Catherine L. Kwik-Uribe Carl L. Keen

Cocoa can be a rich source of antioxidants including the flavan-3-ols, epicatechin and catechin, and their oligomers (procyanidins). While these flavonoids have been reported to reduce the rate of free radical-induced erythrocyte hemolysis in experimental animal models, little is known about their effect on human erythrocyte hemolysis. The major objective of this work was to study the effect of...

2013
Sylwester Czaplicki

Chromatographic techniques have led to considerable development in mixture ingredient analysis. With the development of stationary-phase and high-pressure module technologies, new possibilities have emerged for the separation of complex systems whose components are characterised by similar structures and properties. Modern detection systems now allow detection and identification of individual i...

Journal: :Acta poloniae pharmaceutica 2011
Monika A Olszewska

Seasonal variation in the antioxidant activity and content of phenolic compounds was studied for the 70% methanol extracts of Sorbus aucuparia leaves harvested monthly over the full course of the growing season. The antioxidant potential of the extracts was evaluated using two complementary in vitro tests: the DPPH (2,2-diphenyl-1-picrylhydrazyl) radical-scavenging assay and the AAPH [2,2'-azob...

Journal: :Free radical biology & medicine 2006
Mubeen Ahmad Ansari Gururaj Joshi Quanzhen Huang Wycliffe O Opii Hafiz Mohmmad Abdul Rukhsana Sultana D Allan Butterfield

Tricyclodecan-9-yl-xanthogenate (D609) has in vivo and in vitro antioxidant properties. D609 mimics glutathione (GSH) and has a free thiol group, which upon oxidation forms a disulfide. The resulting dixanthate is a substrate for glutathione reductase, regenerating D609. Recent studies have also shown that D609 protects brain in vivo and neuronal cultures in vitro against the potential Alzheime...

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