Title |
Chronic administration of a nitric oxide synthase inhibitor, Nω-nitro-l-arginine, and drug-induced increase in cerebellar cyclic GMP in vivo
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Published in |
Neurochemical Research, October 1993
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DOI | 10.1007/bf00966685 |
Pubmed ID | |
Authors |
M. Bansinath, B. Arbabha, H. Turndorf, U. C. Garg |
Abstract |
N omega-nitro-L-arginine (NG-nitro-L-arginine) is a potent nitric oxide synthase inhibitor which crosses the blood brain barrier and does not undergo extensive metabolism in vivo. In this study, effect of chronic pretreatment of N omega-nitro-L-arginine (75 mg/kg, i.p., twice daily for 7 days) on the harmaline- (100 mg/kg, s.c.), picrotoxin- (4 mg/kg, s.c.), pentylenetetrazole- (50 mg/kg, i.p.), and L-glutamic acid- (400 micrograms/10 microliters/mouse, i.c.v.) induced increase in cerebellar cGMP was assessed. All the four drugs produced significant increase in cerebellar cGMP in vehicle pretreated control animals. Cerebellar cGMP increased induced by harmaline, picrotoxin, and L-glutamic acid was attenuated in N omega-nitro-L-arginine pretreated animals. These results indicate that in vivo cerebellar cGMP levels are increased by the prototype excitatory amino acid receptor agonist, L-glutamic acid and also by the drugs which augment the excitatory amino acid transmission. Furthermore, parenteral chronic administration of N omega-nitro-L-arginine blocks NO synthase in the brain and hence cerebellar cGMP response in chronic N omega-nitro-L-arginine treated animals could be used as a tool to assess the physiological functions of nitric oxide in vivo. |
Mendeley readers
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Unknown | 14 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Bachelor | 5 | 36% |
Researcher | 2 | 14% |
Professor | 2 | 14% |
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Student > Ph. D. Student | 1 | 7% |
Other | 1 | 7% |
Unknown | 2 | 14% |
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Neuroscience | 1 | 7% |
Other | 1 | 7% |
Unknown | 3 | 21% |