Abstract
1. In cats anaesthetized with pentobarbitone sodium, intraperitoneal injections of four inhibitors of monoamine oxidase (MAO) were shown to increase the 5-hydroxytryptamine (5-HT) in the effluent from the perfused cerebral ventricles.
2. Weight for weight, tranylcypromine was found to be about twice as potent as pheniprazine, eight times as potent as nialamide and sixty times as potent as pargyline.
3. The effect of tranylcypromine was also examined after reserpine had been injected into the cerebral ventricles or after p-chlorophenylalanine, given intraperitoneally. In both conditions tranylcypromine retained its ability to increase the 5-HT output from the perfused cerebral ventricle, but the effect was attenuated, more after p-chlorophenylalanine than after reserpine.
4. Evidence is put forward that in both conditions the brain is not completely depleted of its 5-HT, but that the 5-HT is only reduced, more after p-chlorophenylalanine than after reserpine.
Full text
PDFSelected References
These references are in PubMed. This may not be the complete list of references from this article.
- BRODIE B. B., SPECTOR S., SHORE P. A. Interaction of monoamine oxidase inhibitors with physiological and biochemical mechanisms in brain. Ann N Y Acad Sci. 1959 Sep 17;80:609–616. doi: 10.1111/j.1749-6632.1959.tb49239.x. [DOI] [PubMed] [Google Scholar]
- Banerjee U., Feldberg W., Lotti V. J. Effect on body temperature of morphine and ergotamine injected into the cerebral ventricles of cats. Br J Pharmacol Chemother. 1968 Mar;32(3):523–538. doi: 10.1111/j.1476-5381.1968.tb00453.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- CARMICHAEL E. A., FELDBERG W., FLEISCHHAUER K. METHODS FOR PERFUSING DIFFERENT PARTS OF THE CAT'S CEREBRAL VENTRICLES WITH DRUGS. J Physiol. 1964 Oct;173:354–367. doi: 10.1113/jphysiol.1964.sp007461. [DOI] [PMC free article] [PubMed] [Google Scholar]
- FUNDERBURK W. H., FINGER K. F., DRAKONTIDES A. B., SCHNEIDER J. A. EEG and biochemical findings with MAO inhibitors. Ann N Y Acad Sci. 1962 Jan 13;96:289–302. doi: 10.1111/j.1749-6632.1962.tb50123.x. [DOI] [PubMed] [Google Scholar]
- GOLDBERG L. I. MONOAMINE OXIDASE INHIBITORS. ADVERSE REACTIONS AND POSSIBLE MECHANISMS. JAMA. 1964 Nov 2;190:456–462. [PubMed] [Google Scholar]
- GOLDBERG L. I., SJOERDSMA A. Effects of several monoamine oxidase inhibitors on the cardiovascular actions of naturally occurring amines in the dog. J Pharmacol Exp Ther. 1959 Nov;127:212–218. [PubMed] [Google Scholar]
- HOLZBAUER M., VOGT M. Depression by reserpine of the noradrenaline concentration in the hypothalamus of the cat. J Neurochem. 1956 May;1(1):8–11. doi: 10.1111/j.1471-4159.1956.tb12048.x. [DOI] [PubMed] [Google Scholar]
- HORITA A. The route of administration of some hydrazine compounds as a determinant of brain and liver monoamine oxidase inhibition. Toxicol Appl Pharmacol. 1961 Jul;3:474–480. doi: 10.1016/0041-008x(61)90063-1. [DOI] [PubMed] [Google Scholar]
- Koe B. K., Weissman A. p-Chlorophenylalanine: a specific depletor of brain serotonin. J Pharmacol Exp Ther. 1966 Dec;154(3):499–516. [PubMed] [Google Scholar]
- Koella W. P., Feldstein A., Czicman J. S. The effect of para-chlorophenylalanine on the sleep of cats. Electroencephalogr Clin Neurophysiol. 1968 Nov;25(5):481–490. doi: 10.1016/0013-4694(68)90158-2. [DOI] [PubMed] [Google Scholar]
- LEE W. C., SHIN W. H., SHIDEMAN F. E. Cardiac activities of several monoamine oxidase inhibitors. J Pharmacol Exp Ther. 1961 Aug;133:180–185. [PubMed] [Google Scholar]
- PLETSCHER A., SHORE P. A., BRODIE B. B. Serotonin as a mediator of reserpine action in brain. J Pharmacol Exp Ther. 1956 Jan;116(1):84–89. [PubMed] [Google Scholar]
- SCHOEPKE H. G., WIEGAND R. G. Relation between norepinephrine accumulation or depletion and blood pressure responses in the cat and rat following pargyline administration. Ann N Y Acad Sci. 1963 Jul 8;107:924–934. doi: 10.1111/j.1749-6632.1963.tb13335.x. [DOI] [PubMed] [Google Scholar]
- VANE J. R. A sensitive method for the assay of 5-hydroxytryptamine. Br J Pharmacol Chemother. 1957 Sep;12(3):344–349. doi: 10.1111/j.1476-5381.1957.tb00146.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- el Hawary M. B., Feldberg W., Lotti V. J. Monoamine oxidase inhibition: effect on 5-hydroxytryptamine output from perfused third ventricle and body temperature. J Physiol. 1967 Jan;188(1):131–140. doi: 10.1113/jphysiol.1967.sp008129. [DOI] [PMC free article] [PubMed] [Google Scholar]