The effects of the central-type benzodiazepine receptor antagonist flumazenil on renal vascular tone and its ability to reverse the benzodiazepine-induced vasodilation were investigated. The isolated and perfused rat kidney model was used. Flumazenil was unable to modify renal vascular resistance under basal conditions and in noradrenaline-pretreated kidneys. Relaxation induced by diazepam or clonazepam of noradrenaline-preconstricted renal vasculature was blunted by 10 microM flumazenil. These results suggest that central-type benzodiazepine receptors could be involved in benzodiazepine-induced renal vasodilation.
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| http://dx.doi.org/10.1016/s0014-2999(02)01942-8 | DOI Listing |
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