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排序方式: 共有69条查询结果,搜索用时 296 毫秒
1.
J Chodakowska B Wocial H Ignatowska-Switalska K Knypl E Brym E Czerniewska J Wac?awek-Maczkowska E Jab?ońska-Skwiecińska D Drygieniec W Januszewicz 《Polski tygodnik lekarski (Warsaw, Poland : 1960)》1989,44(12-13):297-300
An effect of enalapril maleate on the activity of renin-angiotensin-aldosterone system and sympathetic reactivity, erythrocyte prostaglandin and sodium levels as well as blood beta-endorphin was investigated in 28 patients with the essential arterial blood hypertension. It was found that enalapril maleate significantly increased plasma renin activity, decreased plasma norepinephrine and its 24-hour excretion, and decreased erythrocyte beta-endorphin and sodium levels. Blood epinephrine and aldosterone levels and their daily excretion remained unchanged similarly to prostaglandins. The above results suggest that a decrease in sympathetic system activity and intracellular sodium concentration may play a role in the hypotensive action of enalapril maleate related to the inhibition of angiotensin II formation. 相似文献
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K Knypl B Wocial J Chodakowska E Brym E Czerniewska J Wac?awek-Maczkowska K Kuczyńska H Berent W Januszewicz 《Polski tygodnik lekarski (Warsaw, Poland : 1960)》1989,44(12-13):293-296
An effect of the treatment with guanfacine on the activity of the adreno-sympathetic system, beta-thromboglobulin, beta-endorphin, and blood lipids was studied in 30 patients with the primary arterial blood hypertension. It was found that guanfacine significantly decreases plasma noradrenaline, adrenaline, and dopamine. Moreover, it decreases the excretion of noradrenaline, adrenaline and 4-hydroxy-3-methoxy-phenylglycol. These effects correlate with the drop in both systolic and diastolic blood pressure. A decrease in plasma renin activity was also observed. It correlated with the blood pressure drops. Guanfacine increased beta-endorphin levels while beta-thromboglobulin, total cholesterol and triglycerides levels remained unaffected. The authors suggest that the hypotensive effect of guanfacine is related to the decrease in adreno-sympathetic system activity and plasma renin activity and no effect on the erythrocyte activity and lipids metabolism. 相似文献
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M Lapiński K Stepniakowski A Januszewicz B Noszczyk E Szczepańska-Sadowska 《Journal of physiology and pharmacology》1992,43(1):65-78
The aim of the study was to find out whether vasopressin (AVP) modifies hypotensive and heart rate accelerating effects of atrial natriuretic peptide (ANP) in normotensive (WKY) and spontaneously hypertensive (SHR) conscious rats. The effect of i.v. administration of 1; 2 and 4 micrograms of ANP on blood pressure (MP) and heart rate (HR) was compared during i.v. infusion of 0.9% NaCl (NaCl), NaCl+AVP (1.2 ng kg-1 min-1) and NaCl+dEt2AVP (V1 receptors antagonist, 0.5 microgram kg-1 min-1). AVP increased MP in SHR and WKY and decreased HR in SHR. V1 antagonist decreased MP and increased HR only in SHR. In SHR ANP decreased MP and increased HR during NaCl, AVP and V1 antagonist infusion. In WKY these effects were observed only during AVP administration. In each experimental situation hypotension and tachycardia induced by ANP were greater in SHR than in WKY. In both strains ANP induced changes in MP and HR were enhanced during AVP in comparison to NaCl infusion. V1 antagonist did not modify effects of ANP in WKY and SHR. The results indicate that ANP abolishes hypertensive response induced by blood AVP elevation and that the basal levels of endogenous vasopressin acting through V1 receptors does not interfere with hypotensive action of ANP neither in WKY nor in SHR. 相似文献
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Radioimmunoassay of atrial natriuretic factor (ANF) in rat atria 总被引:1,自引:0,他引:1
J Gutkowska G Thibault R W Milne P Januszewicz P W Schiller M Cantin J Genest 《Proceedings of the Society for Experimental Biology and Medicine. Society for Experimental Biology and Medicine (New York, N.Y.)》1984,176(2):105-108
We describe a solid phase radioimmunoassay for atrial natriuretic factor (ANF) and its application for measurement of this peptide in homogenates of rat atria. The method uses a synthetic 26 amino-acid fragment (8-33 ANF) of the native peptide. Sample (or standard) are incubated with the rabbit anti-8-33 ANF antiserum in peptide (8-33 ANF)-coated wells. Then an excess of I125 goat anti-rabbit IgG is added. The radioactivity bound is directly proportional to the amount of ANF present. The concentration of immunoreactive ANF has been found to be about 4 times higher in the right atrium than in the left atrium of the rat. 相似文献
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