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Lin XW, Lin HR, Peter RE. The regulatory effects of thyrotropin-releasing hormone on growth hormone secretion from the pituitary of common carp in vitro. Fish Physiol Biochem. 1993;11(1):71-6doi: 10.1007/BF00004552.
Lin, X. W., Lin, H. R., & Peter, R. E. (1993). The regulatory effects of thyrotropin-releasing hormone on growth hormone secretion from the pituitary of common carp in vitro. Fish physiology and biochemistry, 11(1), 71-6. https://doi.org/10.1007/BF00004552
Lin, X W, et al. "The regulatory effects of thyrotropin-releasing hormone on growth hormone secretion from the pituitary of common carp in vitro." Fish physiology and biochemistry vol. 11,1 (1993): 71-6. doi: https://doi.org/10.1007/BF00004552
Lin XW, Lin HR, Peter RE. The regulatory effects of thyrotropin-releasing hormone on growth hormone secretion from the pituitary of common carp in vitro. Fish Physiol Biochem. 1993 Jul;11(1):71-6. doi: 10.1007/BF00004552. PMID: 24202462.
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Fish Physiol Biochem. 1993 Jul;11(1):71-6. doi: 10.1007/BF00004552.

The regulatory effects of thyrotropin-releasing hormone on growth hormone secretion from the pituitary of common carp in vitro.

Fish physiology and biochemistry

X W Lin, H R Lin, R E Peter

Affiliations

  1. Department of Biology, Zhongshan University, Guangzhou, P.R. China, 510275.

PMID: 24202462 DOI: 10.1007/BF00004552

Abstract

The effects of thyrotropin-releasing hormone (TRH) on growth hormone (GH) and gonadotropin (GtH) release, and the influences of somatostatin (SRIF), the dopamine agonist apomorphine (APO) and extracellular calcium on basal and TRH-induced GH release were examined using an in vitro perifusion system for pituitary fragments of common carp (Cyprinus carpio). Five minute pulses of different dosages of TRH stimulated a rapid and dose-dependent increase in GH release from the perifused pituitary fragments with an ED50 of 9.7 ± 2.3 nM. TRH was ineffective on GtH release. SRIF significantly inhibited basal and TRH-induced GH release from the perifused pituitary fragments, and the effects of SRIF were dose-dependent. APO induced a dose-dependent increase in basal and TRH-stimulated GH release from the perifused pituitary fragments. Increasing the concentrations of extracellular calcium from 0 mM to 1.25 mM resulted in an increase in basal and TRH-induced GH release. The high dose of calcium (6.25 mM) caused a slight decrease in basal and TRH-induced GH release compared with those at a concentration of 1.25 mM.

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