| Literature DB >> 9239688 |
Abstract
This bioessay aims to explain the different effects of maternal ageing and postovulatory oocyte ageing on mammalian oocytes/embryos under the scope of 'the oxygen radical-mitochondrial injury hypothesis of ageing'. This hypothesis assumes a key role in the senescent process of oxygen radical damage to mitochondrial DNA, proteins and lipids. It is proposed that a decrease in intracellular ATP concentrations and glutathione (GSH)/glutathione disulphide (GSSG) ratio together with a concomitant increase in cytosolic Ca2+ are major factors causing the observed detrimental effects of ageing on cytoskeletal fibres, fertilization and embryo development.Entities:
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Year: 1996 PMID: 9239688 DOI: 10.1093/molehr/2.10.717
Source DB: PubMed Journal: Mol Hum Reprod ISSN: 1360-9947 Impact factor: 4.025