Age-related increase of oxidative stress-induced apoptosis in mice prevention by Ginkgo biloba extract (EGb761)

Enhanced apoptosis and elevated levels of reactive oxygen species (ROS) play a major role in aging. In addition, several neurodegenerative diseases are associated with increased oxidative stress and apoptosis in neuronal
Enhanced apoptosis and elevated levels of reactive oxygen species (ROS) play a major role in aging. In addition, several neurodegenerative diseases are associated with increased oxidative stress and apoptosis in neuronal tissue. Antioxidative treatment has neuro-protective effects. The aim of the present study was to evaluate changes of susceptibility to apoptotic cell death by oxidative stress in aging and its inhibition by the antioxidant Ginkgo biloba extract EGb761. We investigated basal and ROS-induced levels of apoptotic lymphocytes derived from the spleen in young (3 months) and old (24 months) mice. ROS were induced by 2-deoxy-D-ribose (dRib) that depletes the intracellular pool of reduced glutathione. Lymphocytes from aged mice accumulate apoptotic cells to a significantly higher extent under basal conditions compared to cells from young mice. Treatment with dRib enhanced this difference, implicating a higher sensitivity to ROS in aging. Apoptosis can be reduced in vitro by treatment with EGb761. In addition, mice were treated daily with 100mg/kg EGb761 per os over a period of two weeks. ROS-induced apoptosis was significantly reduced in the EGb761 group. Interestingly, this effect seemed to be more pronounced in old mice.
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Metadaten
Author:Katharina Schindowski, Silke Leutner, Sabine Kreßmann, Anne Eckert, Walter E. Müller
URN:urn:nbn:de:hebis:30-34395
URL:http://www.springerlink.com/index/Q3J56UVD4WGA62VF.pdf
Parent Title (English): Journal of neural transmission
Publisher:Springer
Place of publication:Wien [u.a.]
Document Type:Article
Language:English
Date of Publication (online):2006/12/05
Year of first Publication:2001
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2006/12/05
Tag:2-deoxy-D-ribose; aging ; lymphocyte ; programmed cell death ; reactive oxygen species
Volume:108
Pagenumber:10
First Page:969
Last Page:978
HeBIS PPN:288691008
Institutes:Pharmazie
Dewey Decimal Classification:570 Biowissenschaften; Biologie
Sammlungen:Universitätspublikationen
Sondersammelgebiets-Volltexte
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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