In vitro effects of ethanol withdrawal and spermidine on viability of hippocampus from male and female rat.

作者: Barton R. Harris , John A. Blanchard , Sveta Mayer , D. Alex Gibson , John M. Littleton

DOI: 10.1111/J.1530-0277.2000.TB01990.X

关键词:

摘要: Background: Long-term ethanol dependence results in neuronal adaptation that likely contributes to withdrawal-induced central nervous system excitability and, potentially, neurotoxicity. This has been suggested result, part, from increased release of or response endogenous polyamines. Furthermore, it reported neurological difficulties related and withdrawal may be more severe female than male alcoholics. Thus, we designed this study examine effects the polyamine spermidine on neurotoxicity associated with long-term exposure by using organotypic hippocampal slice cultures derived rats. Methods Results: Twenty-four hours after continuous 10 day (100 mM culture medium) resulted cytotoxicity explants obtained both sexes. was most evident pyramidal cell layers CA1 region, no sex differences were observed severity damage. Exposure sexes NMDA blocker MK-801 during significantly reduced toxicity. In control cultures, μM) alone produced significant similar rats. all regions explants. CA3 spermidine-potentiation damage greater rats compared those rats. Conclusions: These data demonstrate presence is mediated, overactivation receptors. these findings suggest females susceptible males polyamine-mediated exposure.

参考文章(62)
Toru Kobayashi, Kazutaka Ikeda, Hiroshi Kojima, Hiroaki Niki, Ryoji Yano, Tohru Yoshioka, Toshiro Kumanishi, Ethanol opens G-protein-activated inwardly rectifying K + channels Nature Neuroscience. ,vol. 2, pp. 1091- 1097 ,(1999) , 10.1038/16019
Peng-jiang Chu, Akira Shirahata, Keijiro Samejima, Hiroshi Saito, Kazuho Abe, N-(3-Aminopropyl)-cyclohexylamine blocks facilitation by spermidine of -induced seizure in mice in vivo European Journal of Pharmacology. ,vol. 256, pp. 155- 160 ,(1994) , 10.1016/0014-2999(94)90240-2
A. M. Zappia, P. B. Molinoff, D. B. Pritchett, K. Williams, Yu Min Shen, Sensitivity of the N-methyl-D-aspartate receptor to polyamines is controlled by NR2 subunits. Molecular Pharmacology. ,vol. 45, pp. 803- 809 ,(1994)
S. Dolin, H. Little, M. Hudspith, C. Pagonis, J. Littleton, Increased dihydropyridine-sensitive calcium channels in rat brain may underlie ethanol physical dependence Neuropharmacology. ,vol. 26, pp. 275- 279 ,(1987) , 10.1016/0028-3908(87)90220-6
Maria T. Ratti, Debora Soragna, Luisella Sibilla, Anna Giardini, Andrea Albergati, Faustino Savoldi, Paola Bo, Cognitive impairment and cerebral atrophy in "heavy drinkers". Progress in Neuro-psychopharmacology & Biological Psychiatry. ,vol. 23, pp. 243- 258 ,(1999) , 10.1016/S0278-5846(98)00103-1
A. Chistina Grobin, Douglas B. Matthews, Leslie L. Devaud, A. L. Morrow, The role of GABA(A) receptors in the acute and chronic effects of ethanol. Psychopharmacology. ,vol. 139, pp. 2- 19 ,(1998) , 10.1007/S002130050685
AM Fox, M Coltheart, N Solowij, PT Michie, GA Fox, Dissociable cognitive impairments in problem drinkers. Alcohol and Alcoholism. ,vol. 35, pp. 52- 54 ,(2000) , 10.1093/ALCALC/35.1.52
J. M. Littleton, H. J. Little, M. A. Whittington, Effects of dihydropyridine calcium channel antagonists in ethanol withdrawal; doses required, stereospecificity and actions of Bay K 8644 Psychopharmacology. ,vol. 100, pp. 387- 392 ,(1990) , 10.1007/BF02244612