PMID: 11326901May 1, 2001Paper

Study of the antioxidative effect of tea polyphenol and allitridi on cultured rat lens in vitro

Yan ke xue bao = Eye science
H XiangS Li

Abstract

To investigate the oxidative modification of lens proteins in the presence of H2O2 in vitro and the protective effect of tea polyphenol(TP) and allitridi. Rat lenses were cultured in DMEM medium containing H2O2(1mM) at 37 degrees C in CO2 incubator. Iron and copper salts were added to the medium. At 24 or 48 hours, photographs were recorded the changes in transparency of rat lens and lens proteins were analysed by SDS-PAGE and IEF. TP and allitridi were added to the medium with lens in order to test the antioxidant effects. Lens opacities occurred at the equatorial region by 24 hours, progressing to totally opaque by 48 hours. SDS-PAGE revealed new bands higher than 43KD were found. In addition the 30KD band disappeared in medium containing copper salt. With addition of TP or allitridi to the culture system, all lens remained transparent. Exposure rat lens to H2O2 with iron or copper salt resulted in opacification of lens with crosslinking of crystallins and degradation of lens polypeptides. Addition of TP or allitridi prevented the lens from oxidative stress.

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica
Xing-Guo ZhangYou-Ming Lu
Zhongguo Zhong xi yi jie he za zhi Zhongguo Zhongxiyi jiehe zazhi = Chinese journal of integrated traditional and Western medicine
Z C LiC X Huang
© 2021 Meta ULC. All rights reserved