Abstract
Ranbezolid, a novel oxazolidinone antibacterial, competitively inhibits monoamine oxidase-A (MAO-A), in vitro. The consequences of MAO-A inhibition was evaluated in vivo, by testing interaction of Ranbezolid with tyramine (in solution or mixed with feed), and amine containing cold remedies on pressor response in conscious rats. Single and repeat doses of Ranbezolid (50 mg/kg, p.o.) did not affect pressor response to tyramine (5 or 15 mg/kg), but potentiated the same after a single dose of 100 mg/kg. Co-administration of Ranbezolid with tyramine in feed or with cold remedies also did not potentiate the respective pressor responses. These results suggest that Ranbezolid exhibits minimal cardiovascular liability associated with MAO-A inhibition.
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