1
|
Changes of oxygen tension in brain and somatic tissues induced by vasodilator and vasoconstrictor drugs. ACTA ACUST UNITED AC 1997. [DOI: 10.1098/rspb.1961.0061] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Oxygen tensions in hypothalamus, cerebral cortex, muscle, testis and subcutaneous tissue of anaesthetized rats were measured quantitatively by the oxygen-cathode technique. The resting levels of oxygen tension and the response to breathing oxygen were assessed and then vasodilator or vasoconstrictor drugs were injected and the changes of oxygen tension were observed. 5HT (Serotonin) caused marked falls of oxygen tension in brain, muscle, testis and subcutaneous tissues, lasting 1 to 2 h, when given by intraperitoneal injection (i. p.) and profound but transient falls when given intravenously (i. v.). Noradrenaline (i. v.) caused a rapid transient rise of oxygen tension in brain, a transient fall in muscle, a longer fall in testis, and a variable response in subcutaneous tissue. Reserpine (i. v.) was followed by a slow fall in oxygen tension in brain especially if the body temperature was allowed to fall. (Alone a fall of body temperature tended to increase the oxygen tension in brain.) Amphetamine (i. v. or i. p.) increased the oxygen tension in brain. The mono-amine oxidase inhibitor, tranylcypromine (SKF385) caused a steady rise of oxygen tension in all tissues studied except testis. The subsequent (i. v.) injection of reserpine caused a rapid, marked increase of oxygen tension in brain. The oxygen tension in muscle fell, in subcutaneous tissue there was a rise followed by a fall which persisted.
Collapse
|
2
|
Clineschmidt BV, Martin GE, Bunting PR. Anticonvulsant activity of (+)-5-methyl-10, 11-dihydro-5H-dibenzo[a, d]cyclohepten-5, 10-imine (MK-801), a substance with potent anticonvulsant, central sympathomimetic, and apparent anxiolytic properties. Drug Dev Res 1982. [DOI: 10.1002/ddr.430020203] [Citation(s) in RCA: 255] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
3
|
Jurna I, Regélhy B. The antagonism between reserpine and some antiparkinson drugs in electroseizure. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 1968; 259:442-59. [PMID: 4236499 DOI: 10.1007/bf00538559] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|