“The accumulation of brain k-hydroxyindoleacetic acid after probenecid was decreased by yohimbine pretreatment.”
“The baseline concentration of brain 3-methyoxy-4-hydroxyphenylethyleneglycol sulphate and its accumulation after probenecid were increased by yohimbine ; this effect was not as marked as that on HVA and was proportional to the quantity of NA depleted in the Amt method.”