Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/108090
Title: Plasma and pituitary thyroid-stimulating hormone and their responses to bromocriptine in the Japanese strains of hypertensive and normotensive rats and the F2 generation of the hybrid
Authors: Tan, B.K.H. 
Hutchinson, J.S.
Keywords: bromocriptine
hybrid
pituitary thyroid stimulating hormone
plasma thyroid stimulating hormone
spontaneously hypertensive rat (SHR)
Wistar-Kyoto
Issue Date: 1990
Source: Tan, B.K.H.,Hutchinson, J.S. (1990). Plasma and pituitary thyroid-stimulating hormone and their responses to bromocriptine in the Japanese strains of hypertensive and normotensive rats and the F2 generation of the hybrid. Clinical and Experimental Hypertension - Part A Theory and Practice 12 (3) : 355-364. ScholarBank@NUS Repository.
Abstract: Plasma thyroid-stimulating hormone (TSH) concentration and pituitary TSH content were examined in bromocriptine (BRC)- and vehicle-treated male Spontaneously Hypertensive Rat (SHR), its normotensive control, the Wistar-Kyoto (WKY) rat and the F2 generation of the SHR/WKY hybrid. The hybrid rats were divided into three groups according to their systolic blood pressures (BP) as follows - group I: BP <140 mmHg; group II: BP = 140-160 mmHg and group III: BP >160 mmHg. Plasma TSH concentrations were not significantly different between the vehicle-treated SHR and WKY nor between the three groups of vehicle-treated hybrid rats. The pituitary TSH content was significantly higher in the vehicle-treated SHR than in the vehicle-treated WKY while it was not significantly different between the three groups of vehicle-treated hybrid rats. Plasma TSH concentrations in the BRC-treated SHR, WKY and three groups of hybrid rats were significantly lower than the concentrations in the corresponding vehicle-treated rats. Pituitary TSH content were significantly lower in the BRC-treated SHR, group I and group III rats but not in the BRC-treated WKY and group II rats when compared to their respective vehicle-treated controls. The reslts of this study suggest that TSH is not involved in the maintenance of systolic BP in the SHR, WKY and hybrid rats.
Source Title: Clinical and Experimental Hypertension - Part A Theory and Practice
URI: http://scholarbank.nus.edu.sg/handle/10635/108090
ISSN: 07300077
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