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Protective effects of melatonin against ethanol-induced reactive gliosis in hippocampus and cortex of young and aged rats.
Exp Neurol. 2005 Jul; 194(1):175-81.EN

Abstract

Evidence has been accumulated indicating that chronic ethanol consumption leads to direct or indirect changes in the viability of central nervous system cells. The effects of aging and chronic ethanol consumption on glial markers [glial fibrillary acidic protein (GFAP) and S100B] and oxidant and antioxidant status of rats were studied. Furthermore, protective effects of melatonin against aging and alcohol consumption were also assayed. Chronic ethanol administration to young and aged rats produced an increase in lipid peroxidation, and a decline in glutathione (GSH) levels, which was significantly reversed by the co-administration of melatonin. Lipid peroxidation status was markedly affected in aged rats treated with alcohol compared to the young rats. An age-related increase in GFAP and S100B levels were found in the cortex and hippocampus. Long-term alcohol exposure resulted in distinct elevation in GFAP content in young rats (P < 0.01) while there was less increase in the cortex of aged rats (P < 0.05). In old rats, hippocampal GFAP levels were not significantly changed by alcohol treatment (P > 0.05). Co-administration of melatonin with alcohol significantly reduced GFAP contents both in the hippocampus (P < 0.01) and cortex (P < 0.001) of aged rats. No significant effects of alcohol treatment were found on the levels of neuron-specific enolase (NSE) in aged rats. This finding suggests that melatonin exerts its protective effect on injured nervous tissues by scavenging free radicals and stabilizing glial activity against the damaging effects of ethanol and aging. Furthermore, this work suggests that the signal to initiate gliosis is mediated, at least indirectly, by free radical formation.

Authors+Show Affiliations

Department of Physiology, Faculty of Medicine, Firat University, Elazig 23119, Turkey. baydas@hotmail.comNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15899254

Citation

Baydas, Giyasettin, and Mehmet Tuzcu. "Protective Effects of Melatonin Against Ethanol-induced Reactive Gliosis in Hippocampus and Cortex of Young and Aged Rats." Experimental Neurology, vol. 194, no. 1, 2005, pp. 175-81.
Baydas G, Tuzcu M. Protective effects of melatonin against ethanol-induced reactive gliosis in hippocampus and cortex of young and aged rats. Exp Neurol. 2005;194(1):175-81.
Baydas, G., & Tuzcu, M. (2005). Protective effects of melatonin against ethanol-induced reactive gliosis in hippocampus and cortex of young and aged rats. Experimental Neurology, 194(1), 175-81.
Baydas G, Tuzcu M. Protective Effects of Melatonin Against Ethanol-induced Reactive Gliosis in Hippocampus and Cortex of Young and Aged Rats. Exp Neurol. 2005;194(1):175-81. PubMed PMID: 15899254.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Protective effects of melatonin against ethanol-induced reactive gliosis in hippocampus and cortex of young and aged rats. AU - Baydas,Giyasettin, AU - Tuzcu,Mehmet, PY - 2004/11/04/received PY - 2004/12/23/revised PY - 2005/02/08/accepted PY - 2005/5/19/pubmed PY - 2005/7/16/medline PY - 2005/5/19/entrez SP - 175 EP - 81 JF - Experimental neurology JO - Exp Neurol VL - 194 IS - 1 N2 - Evidence has been accumulated indicating that chronic ethanol consumption leads to direct or indirect changes in the viability of central nervous system cells. The effects of aging and chronic ethanol consumption on glial markers [glial fibrillary acidic protein (GFAP) and S100B] and oxidant and antioxidant status of rats were studied. Furthermore, protective effects of melatonin against aging and alcohol consumption were also assayed. Chronic ethanol administration to young and aged rats produced an increase in lipid peroxidation, and a decline in glutathione (GSH) levels, which was significantly reversed by the co-administration of melatonin. Lipid peroxidation status was markedly affected in aged rats treated with alcohol compared to the young rats. An age-related increase in GFAP and S100B levels were found in the cortex and hippocampus. Long-term alcohol exposure resulted in distinct elevation in GFAP content in young rats (P < 0.01) while there was less increase in the cortex of aged rats (P < 0.05). In old rats, hippocampal GFAP levels were not significantly changed by alcohol treatment (P > 0.05). Co-administration of melatonin with alcohol significantly reduced GFAP contents both in the hippocampus (P < 0.01) and cortex (P < 0.001) of aged rats. No significant effects of alcohol treatment were found on the levels of neuron-specific enolase (NSE) in aged rats. This finding suggests that melatonin exerts its protective effect on injured nervous tissues by scavenging free radicals and stabilizing glial activity against the damaging effects of ethanol and aging. Furthermore, this work suggests that the signal to initiate gliosis is mediated, at least indirectly, by free radical formation. SN - 0014-4886 UR - https://www.unboundmedicine.com/medline/citation/15899254/Protective_effects_of_melatonin_against_ethanol_induced_reactive_gliosis_in_hippocampus_and_cortex_of_young_and_aged_rats_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0014-4886(05)00051-8 DB - PRIME DP - Unbound Medicine ER -