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Titolo:
Serotonergic regulation of crustacean hyperglycemic hormone secretion in the crayfish, Procambarus clarkii
Autore:
Lee, CY; Yang, PF; Zou, HS;
Indirizzi:
Natl Changhua Univ Educ, Dept Biol, Changhua 50058, Taiwan Natl Changhua Univ Educ Changhua Taiwan 50058 ol, Changhua 50058, Taiwan
Titolo Testata:
PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
fascicolo: 3, volume: 74, anno: 2001,
pagine: 376 - 382
SICI:
1522-2152(200105/06)74:3<376:SROCHH>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
CENTRAL-NERVOUS-SYSTEM; RED SWAMP CRAYFISH; AMINO-ACID-SEQUENCES; HOMARUS-AMERICANUS; CANCER-PAGURUS; BLOOD-GLUCOSE; CHH; 5-HYDROXYTRYPTAMINE; NEUROPEPTIDES; LOBSTER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Lee, CY Natl Changhua Univ Educ, Dept Biol, Changhua 50058, Taiwan Natl Changhua Univ Educ Changhua Taiwan 50058 ghua 50058, Taiwan
Citazione:
C.Y. Lee et al., "Serotonergic regulation of crustacean hyperglycemic hormone secretion in the crayfish, Procambarus clarkii", PHYSIOL B Z, 74(3), 2001, pp. 376-382

Abstract

These studies investigate if crustacean hyperglycemic hormone (CHH) is involved in 5-hydroxytryptamine (5-HT)-induced hyperglycemia. Eyestalk gangliawith intact X-organ-sinus gland complex were dissected from the crayfish Procambarus clarkii and incubated under various experimental conditions. Incubation media were then analyzed for the presence of released hyperglycemicfactor using an in vivo bioassay. The results show that 5-HT enhanced release of hyperglycemic factor in a dose-dependent manner. This stimulatory effect of 5-HT was significantly decreased by adding ketanserin or methysergide (both 5-HT receptor antagonists) into incubation of eyestalk ganglia. Further, activity of the 5-HT-released hyperglycemic factor could be eliminated by adsorption of incubation media with anti-CHH serum but not by preimmune or anti-5-HT serum. These results confirm the hypothesis that 5-HT enhances release of CHH, which in turn elicits hyperglycemic responses. It is probable that 5-HT activates an excitation-secretion coupling mechanism by interacting with receptors located on the X-organ neurosecretory cells.

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Documento generato il 25/01/20 alle ore 15:33:39