Chronic ethanol consumption and withdrawal affects mitochondrial benzodiazepine receptors in rat brain and peripheral organs

Miri Bidder, Ronit Weizman, Fuad Fares, Ilana Grel, Moshe Gavish

Research output: Contribution to journalArticlepeer-review

Abstract

Ethanol administration to rats for 30 days resulted in a significant decrease (-28%; P< 0.05) in the density of mitochondrial benzodiazepine receptors (MBR) in the olfactory bulb. The reduction in [3H]PK 11195 binding persisted 24 hr after cessation of alcohol and had returned to normal values when measured 4 days later. Alterations were confined to this brain region and were not detected in the cerebral cortex, cerebellum or hippocampus. [3H]PK 11195 binding was elevated in the liver (100%; P<0.01), heart (43%; P< 0.01) and testis (27%; P<0.05) 30 days following ethanol consumption and this persisted for 1 and 4 days after abrupt withdrawal. A transitory decrease (-20%; P<0.05) in MBR density was observed in the adrenal gland following 30 days of alcohol ingestion, but disappeared during withdrawal. The alterations in these receptors may be relevant to the cellular damage or dysfunction induced by chronic exposure to ethanol.

Original languageEnglish
Pages (from-to)1335-1339
Number of pages5
JournalBiochemical Pharmacology
Volume44
Issue number7
DOIs
StatePublished - 6 Oct 1992

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