p-chlorophenylalanine attenuates the pituitary-adrenocortical response to 5-HT1A receptor agonists in mice.
The i.p. injection of 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT) caused hypothermia and increased the concentrations of serum corticosterone and plasma ACTH in mice. The effects of 8-OH-DPAT at a dose of 2 mg/kg but not of 0.2 mg/kg on the hormone levels were attenuated by pretreatment with p-chlorophenylalanine (pCPA) which depleted brain 5-HT by about 70%; the hypothermic effect of 8-OH-DPAT was, however, not prevented. Similar results were obtained with another 5-HT1A agonist, 1-[3-(3,4-methylenedioxyphenoxy)propyl]-4-phenyl piperazine (BP-554).
Department of Pharmacology, Faculty of Pharmaceutical Sciences, Osaka University, Japan.
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T
Matsuda
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Kanda
Y H
YH
Seong
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A
Baba
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Iwata
D017371:8-Hydroxy-2-(di-n-propylamino)tetralin; D000302:Adrenal Cortex / Q000187:drug effects* / Q000502:physiology; D000324:Adrenocorticotropic Hormone / Q000097:blood; D000818:Animals; D003345:Corticosterone / Q000097:blood; D010134:Fenclonine / Q000494:pharmacology*; D006897:Hydroxyindoleacetic Acid / Q000097:blood; D008297:Male; D051379:Mice; D008815:Mice, Inbred Strains; D010879:Piperazines / Q000494:pharmacology; D010902:Pituitary Gland / Q000187:drug effects* / Q000502:physiology; D011985:Receptors, Serotonin / Q000502:physiology*; D012701:Serotonin / Q000097:blood; D013764:Tetrahydronaphthalenes / Q000494:pharmacology
D010879:Piperazines; D011985:Receptors, Serotonin; D013764:Tetrahydronaphthalenes; D012701:Serotonin; D006897:Hydroxyindoleacetic Acid; D017371:8-Hydroxy-2-(di-n-propylamino)tetralin; C062718:BP 554; D000324:Adrenocorticotropic Hormone; D010134:Fenclonine; D003345:Corticosterone