Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:3.4.23.15 (renin)
 35,795 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Urinary dopamine (DA) and sodium excretion in patients with nephrotic syndrome (NS) were studied under various sodium loading in metabolic ward. Twenty patients and 10 age-matched normal volunteers were enrolled in this study. When they were on a low-salt diet (34 mmol/d), urinary excretion of DA and sodium in patients with heavy edema were much lower than that in normal controls, while in patients with mild or without edema, urine DA and sodium excretion did not decrease significantly, but were not mobilized on sodium loading (170 mmol/d), and the plasma renin activity and aldosterone were not completely suppressed as well. The decrement of urine DA excretion was independent of Ccr or the severity of renal tubule lesions, but was associated with the severity of proteinuria. When the proteinuria reduced, urine DA and sodium excretion increased. From the above observations, we might assume that the abnormal retention of sodium and water in NS was due partly to a failure to mobilize DA in the kidney and the change of the physical environment in renal tubule caused by heavy proteinuria was responsible for it.
Zhonghua Nei Ke Za Zhi 1992 Sep
PMID:[Is the renal dopamine involved in the sodium retention in the nephrotic syndrome?]. 130 50

Chronic renal failure was induced in male Wistar rats with 5/6 nephrectomy (group I) and sham-operation was carried in the controls (group II). The results showed that in group I, plasma ANP levels increased progressively as Scr elevated. The plasma levels of renin and angiotensin raised simultaneously as compared with the controls (P < 0.001). At the 20th week after operation, urine volume and Na decreased significantly (P < 0.05) and the number of glomerular ANP receptors decreased significantly at the 12th week (P < 0.05) and 20th week (P < 0.01). Our data suggest that in 5/6 nephrectomized rats: 1. The elevation of plasma ANP level might be partly caused by damage of glomerular receptors. 2. The elevated plasma ANP could not cause its diuretic, natriuretic, blood pressure depression and R-A inhibition effect due to the damage of kidney ANP receptors.
Zhonghua Nei Ke Za Zhi 1992 Nov
PMID:[The relationship between plasma atrial natriuretic peptide (ANP) and glomerular ANP receptors in 5/6 nephrectomized rats]. 130 71

To investigate the relationship between renin-angiotensin-aldosterone system and pulmonary hemodynamic parameters in patients with chronic pulmonary artery hypertension, we measured plasma levels of renin activity, angiotensin II and aldosterone in 11 patients during right heart catheterization. All patients had chronic obstructive pulmonary disease. At rest, plasma concentration of angiotensin II positively correlated with mean pulmonary artery pressure (r = 0.76, P less than 0.01) and pulmonary vascular resistance (r = 0.64, P less than 0.05). During exercise, plasma level of angiotensin II increased from 70 +/- 21 to 81 +/- 24 pg/ml (P less than 0.01) and plasma renin activity from 0.66 +/- 0.54 to 1.28 +/- 1.2 ng/ml/h (P less than 0.05), whereas mean pulmonary artery pressure increased from 3.73 +/- 0.85 to 6.27 +/- 1.81 kPa (28 +/- 6.4 to 47 +/- 13.6 mmHg). Increase of angiotensin II correlated with changes in mean pulmonary artery pressure (r = 0.69, P less than 0.05) but not with systemic artery pressure. The results of present study suggest that angiotensin II might play a role in the development of pulmonary artery hypertension in patients with chronic obstructive pulmonary disease.
Zhonghua Nei Ke Za Zhi 1990 Jul
PMID:[Renin-angiotensin-aldosterone system and pulmonary hemodynamics in patients with pulmonary artery hypertension]. 228 76

Plasma renin activity (PRA) and plasma angiotensin II (PAT II) level were determined with the method of radioimmunoassay in 55 patients with advanced chronic obstructive pulmonary disease (COPD) and chronic cor pulmonale (41 of them had respiratory failure) and 12 healthy aged persons. The results showed that PRA and PAT II levels were significantly elevated in the presence of such factors as severe hypoxia and hypercapnia (PaO2 less than or equal to 45 mmHg, mean 40 mmHg, PaCO2 greater than or equal to 65 mmHg), right heart failure, acidosis, hyponatremia and hypochloremia. It is shown that the prognosis would be poor when the patient's PRA level is significantly elevated.
Zhonghua Nei Ke Za Zhi 1989 Jun
PMID:[Influence of acute respiratory failure on plasma renin activity and plasma angiotensin II level in advanced chronic obstructive pulmonary disease and chronic cor pulmonale]. 268 74

Heart function and plasma atrial natriuretic peptide (ANP), plasma renin activity (PRA) and angiotension II (Ang II) were examined with echocardiography and radioimmunoassay in 9 patients with dilated cardiomyopathy (DCM), 41 with rheumatic heart disease (RHD), 29 with hyperthyroidism (Ht) and 24 normal subjects. ANP level was significantly increased as heart failure progressed (P < 0.01 and 0.001). There was negative correlation between ANP and left ventricular fractional shortening, and between ANP and ejection fraction in DCM and Ht groups. There was positive correlation between ANP and maximal left atrial diameter, right atrial area, and diastolic diameter or volume of left ventricle in DCM and RHD groups, and negative correlation between ANP and peak flow velocity in aorta or through mitral valve in DCM group (r = -0.608, P < 0.05 and r = 0.710, P < 0.05). These findings suggest that the stronger the myocardial contractility and the faster the blood flow, the lower the plasma ANP level.
Zhonghua Nei Ke Za Zhi 1994 Mar
PMID:[Influence of cardiac structure, blood flow velocity and heart function on circulating atrial natriuretic peptide and renin-angiotension system]. 780 22

Plasma levels of renin activity, angiotensin II and aldosterone were determined in 16 patients with high altitude pulmonary edema (HAPE) with radioimmunoassay and compared with those in the controls including 9 patients with high altitude acute response (HAAR) and 14 health subjects. All of them arrived recently in Lhasa, a place with an altitude of 3,658 m. The results showed that the concentration of plasma renin activity, angiotensin II, and aldosterone was significantly increased (P < 0.05-0.001) in patients with HAPE and higher than that in the controls. It is suggested that the increase plays a role in the development of pulmonary edema in patients with HAPE.
Zhonghua Nei Ke Za Zhi 1993 Mar
PMID:[Clinical significance of changes in plasma renin-angiotensin aldosterone system in patients with high altitude pulmonary edema]. 815 47

A clinical study of intravenous captopril was performed in 10 patients with mild heart failure and 20 with severe heart failure. The results indicated that intravenous captopril may rapidly reduce cardiac preload and afterload, increase cardiac output, inhibit renin system activity and decrease plasma level of catecholamine. A short period of treatment with intravenous captopril may produce a rapid symptomatic improvement in patients with acute or severe heart failure. There was a good tolerance with the therapy.
Zhonghua Nei Ke Za Zhi 1993 Mar
PMID:[A clinical study of intravenous captopril in heart failure]. 822 78

One of the main causes of pulmonary hypertension in chronic obstructive pulmonary disease (COPD) is considered to be hypoxic pulmonary vasoconstriction, which may partly be mediated by angiotensin II. Ten patients with COPD were administered with captopril (25mg sublingually). Hemodynamics blood gases renin activity inducing angiotensin II and angiotension converting enzyme (ACE) and TXB2/6-ketone-PGF1 alpha were studied through Swan-Ganz catheter before and after administration of the drug. Captopril reduced mean pulmonary artery pressure and pulmonary vascular resistance by 22% and 30% respectively. Levels of ACE angiotension II and TXB2/6-ketone-PGF1 alpha were reduced. There was no significant change in blood gases. Heart rate and systemic arterial pressure did not change significantly. These results suggest that captopril is of value in reducing pulmonary artery pressure and pulmonary vascular resistance.
Zhonghua Nei Ke Za Zhi 1993 Aug
PMID:[The effect of captopril on hemodynamics in patients of chronic obstructive pulmonary disease with pulmonary hypertension]. 826 86

Plasma levels of tissue type plasminogen activator (tPA), plasminogen activator inhibitor (PAI), fibrinogen (Fg), thromboxane B2 (TXB2), 6-ketoprostaglandin F1 alpha (6-keto-PGF1 alpha), renin activity (PRA) and angiotensin II (ANGII) were assayed in 18 patients with coronary heart disease and 11 healthy subjects before and after submaximal treadmill exercise test according to "Bruce programme". All patients showed significant (> or = 50%) stenosis of at least one branch of the coronary arteries in coronary angiography and normal levels of serum trinitroglycerin. Drugs of dipyridamole, heparin, warfarin and aspirin were not administered to the patients two weeks before the test. The results were as follows: (1) Plasma PAI activity and Fg levels in 12 patients with positive test were remarkablly higher than in the remaining 6 subjects with negative test in the CHD group and in the control before and after exercise. Plasma tPA antigen changed in a reverse way. (2) Plasma levels of TXB2, PRA and ANGII in the positive test subgroup of CHD were higher than in the negative test subgroup and in the control after exercise, but differences of the parameters among the three groups were insignificant before exercise. The study suggests that defectiveness of fibrinolytic system in CHD patients was shown mainly as disorder of tPA-PAI equilibrium and that decreased fibrinolytic activity and increased PAI in exercise-induced myocardial ischemia have relations with activation of platelets and renin-angiotensin system.
Zhonghua Nei Ke Za Zhi 1995 May
PMID:[Clinical significance of fibrinolytic system defectiveness in exercise induced myocardial ischemia and its mechanism]. 856 12

A prospective randomized study to compare the efficacy between plasma exchange (PE) plus D-penicillamine (13 cases) (group I) and D-penicillamine alone (16 cases) (group II) in the treatment of diffuse scleroderma was carried out. Total skin score, the distance between finger and palm, the distance between upper and lower teeth, the index of joint tenderness, grip strength, ESR, IgG, plasma renin and angiotensin II were measured. After 6 times of PE, all parameters in group I showed significant improvement as compared with those before treatment (P < 0.05-P < 0.01). The overall effective rates evaluated by physicians and by patients were 61.1% and 69.2% respectively. One and half year after the 6 times of PE, all parameters in group I were lower than those in group II (P < 0.05). In group I there were less internal organ impairment and hypertension than in group II. The commonest side effect of PE was hypotension; it disappeared after transfusion.
Zhonghua Nei Ke Za Zhi 1995 Sep
PMID:[A prospective study of plasma exchange in the treatment of diffuse scleroderma]. 869 30


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