ADRENOCEPTORS ON BLOOD-CELLS IN PATIENTS WITH PRIMARY HYPERTENSION - CORRELATION WITH BLOOD-PRESSURE AND RELATED VARIABLES

被引:11
作者
BLANKESTEIJN, WM [1 ]
GRAAFSMA, SJ [1 ]
VANTITS, LJH [1 ]
HECTORS, MPC [1 ]
THIEN, T [1 ]
机构
[1] UNIV HOSP NIJMEGEN,DEPT MED,DIV GEN INTERNAL MED,POB 9101,6500 HB NIJMEGEN,NETHERLANDS
关键词
PRIMARY HYPERTENSION; PLATELET ALPHA-2-ADRENOCEPTORS; MONONUCLEAR LEUKOCYTE BETA-2-ADRENOCEPTORS; PLASMA ADRENALINE; PLASMA NORADRENALINE;
D O I
10.1097/00004872-199309000-00015
中图分类号
R6 [外科学];
学科分类号
1002 ; 100210 ;
摘要
Objective: Alterations in platelet alpha2-adrenoceptor and mononuclear leucocyte beta2-adrenoceptor characteristics in primary hypertension have been extensively studied. The results of the reports have not been consistent, possibly because of the small number of subjects in most of the studies. We therefore studied the blood-cell adrenoceptor characteristics in a relatively large group of primary hypertensive and normotensive subjects. Design: Platelet alpha2-adrenoceptor characteristics were compared in 65 hypertensive and 51 normotensive subjects. Mononuclear leucocyte beta2-adrenoceptor characteristics were compared in 72 hypertensives and 67 normotensives. Untreated hypertensive subjects were selected from the outpatient clinic and the normotensive controls were recruited by a newspaper announcement. Methods: Platelets and mononuclear leucocytes were isolated from blood samples obtained after at least 10 min supine rest. The alpha2- and beta2-adrenoceptor characteristics were determined with [H-3]-rauwolscine and [I-125]-(-)cyanopindolol, respectively. Correlations between the adrenoceptor characteristics and clinical parameters of the subjects were studied. Results: No differences in alpha2- or beta2-adrenoceptor densities were observed between the two groups. However, a significantly lower equilibrium dissociation constant for [H-3]-rauwolscine was observed in the hypertensive group. The correlations between the adrenoceptor characteristics and clinical parameters were weak and mostly not statistically significant. The results were compared with the most relevant studies in the literature. Conclusions: From our study and the literature, we conclude that blood-cell adrenoceptor characteristics are unchanged in primary hypertension.
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页码:995 / 1002
页数:8
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