Effect of steroid hormones on serotonin, norepinephrine and epinephrine contents in the pineal-paraphyseal complex of the soft-shelled turtle (Lissemys punctata punctata).
Steroids (testosterone, oestrogen, progesterone, corticosterone, dexamethasone and deoxycorticosterone) were administered intramuscularly (0.1 mg.100 g bw-1) on seven consecutive days to juvenile male soft-shelled turtles. Serotonin, norepinephrine and epinephrine contents of the pineal-paraphyseal complex were measured spectrofluorometrically 24 h after the last injection. Testosterone and oestrogen decreased serotonin, norepinephrine and epinephrine levels. Progesterone treatment resulted in an increase of serotonin level and a fall in norepinephrine and epinephrine levels. Corticosterone treatment caused an increase of serotonin level and a decrease of norepinephrine and epinephrine levels. Dexamethasone failed to alter serotonin content, increased norepinephrine and decreased epinephrine levels. Deoxycorticosterone decreased serotonin and elevated epinephrine content.
Mahata
M
M
Department of Zoology, University of Calcutta, India.
Mahata
S K
SK
D000305:Adrenal Cortex Hormones / Q000494:pharmacology; D000818:Animals; D004837:Epinephrine / Q000378:metabolism; D012739:Gonadal Steroid Hormones / Q000494:pharmacology; D006728:Hormones / Q000494:pharmacology*; D008297:Male; D009638:Norepinephrine / Q000378:metabolism; D010870:Pineal Gland / Q000187:drug effects* / Q000378:metabolism; D012701:Serotonin / Q000378:metabolism; D014426:Turtles / Q000378:metabolism*
D000305:Adrenal Cortex Hormones; D012739:Gonadal Steroid Hormones; D006728:Hormones; D012701:Serotonin; D009638:Norepinephrine; D004837:Epinephrine