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|Section2= |Section3= }} β-Carboline (9''H''-pyrido()indole), also known as norharmane, is a nitrogen containing heterocycle. It is also the prototype of a class of compounds known as β-carbolines. ==Pharmacology== β-Carboline alkaloids are widespread in plants and animals, and frequently act as benzodiazepine inverse agonists. As components of the liana ''Banisteriopsis caapi'', the β-carbolines harmine, harmaline, and tetrahydroharmine play a pivotal role in the pharmacology of the indigenous psychedelic drug ayahuasca by preventing the breakdown of dimethyltryptamine in the gut by reversibly inhibiting monoamine oxidase, thus making it psychoactive upon oral administration. Some β-carbolines, notably tryptoline and pinoline, may be formed naturally in the human body. The latter is possibly implicated along with melatonin in the role of the pineal gland in regulating the sleep-wake cycle. β-carboline is a benzodiazepine receptor inverse agonist and can therefore have convulsive, anxiogenic and memory enhancing effects. 9-methyl-β-carbolines appear to induce DNA damage when exposed to ultra-violet light. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Beta-Carboline」の詳細全文を読む スポンサード リンク
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