Intestinal peptide transporters, including hPEPT1, facilitate the absorption of cephalosporins and angiotensin-converting enzyme inhibitors, and have been investigated as a means to improve oral drug absorption. Renal peptide transporters including hPEPT2, may also facilitate renal reabsorption of such compounds. In vitro and animal studies suggest that co-administration of peptidomimetic compo...

The effects of three angiotensin converting enzyme (ACE) inhibitors - captopril, MK-421 diacid, and teprotide - on renal vascular responses to graded (50, 100, 200 ng) injections of norepinephrine (NE) were examined in rat isolated perfused kidneys, having a mean basal perfusion pressure of 78 +/- 10 mm Hg. The minimum dose of captopril (0.05 microgram/ml, low dose) that abolished the vasoconst...

BACKGROUND reports on delated cutaneous reactions to captopril have been seldom reported. Captopril is an angiotensin-converting enzyme (ACE) inhibitor and their cutaneous side-effects are documented, but little has been published concerning the usefulness of patch test when they occur. We presented the case of a patient who developed a cutaneous reaction induced by captopril with positive patc...

Effects of a new angiotensin-converting enzyme inhibitor, N-[3-(N-cyclohexanecarbonyl-D-alanylthio)-2-methylpropanoyl] -L-proline calcium (MC-838), on the systemic and coronary circulation were evaluated in anesthetized dogs, and the effects were compared with those of captopril. Administration of MC-838 (0.1, 0.3, 1.0 and 3.0 mg/kg, i.v.) produced a gradual and dose-dependent decline in aortic...

To compare the antihypertensive and humoral effects of the angiotensin-converting enzyme inhibitors captopril and enalapril, 20 patients with essential hypertension, not receiving treatment for 2 weeks and consuming a prescribed sodium ion intake, were randomly assigned to two parallel, double-blind treatment groups with stratification based on race and untreated seated diastolic blood pressure...

Diuretics have been particularly successful for treatment of low-renin hypertension (LRH), although they may cause metabolic complications such as hypokalemia and hyperglycemia. Since the efficacy of diuretics is largely limited by reactive angiotensin II production, a combination of a converting enzyme inhibitor with a diuretic should be synergistic, particularly in LRH, where heightened aldos...

Background. Lipoic acid (LA), which has significant antioxidant properties, may also function as a potent neuroprotectant. The synthetic compounds INV-155, INV-157, INV-159, and INV-161 are physiochemical combinations of lipoic acid and captopril. We sought to determine if these compounds have neuroprotective potential following middle cerebral artery occlusion (MCAO) in rats. Methods. Male Spr...

The effects of captopril on the response of cytosolic free Ca2+ concentration in cultured vascular smooth muscle cells of aortas from Wistar-Kyoto and spontaneously hypertensive rats to angiotensin II (Ang II) and bradykinin were studied using fura 2. Incubation with captopril for longer than 10 minutes caused a decreased response of cytosolic free Ca2+ to Ang II and bradykinin. Maximal effects...

The renal extraction ratios of 131I-sodium iodohippurate (131I-Hippuran) and 125I-thalamate were greatly reduced on the affected side by 50 mg captopril in seven out of 14 patients with unilateral renal artery stenosis. With long term captopril 150 mg daily the uptake of 99mTc-diethylenetriaminepenta-acetic acid by the affected kidney, which was determined by scintillation camera renography, be...

The sequence and magnitude of acute changes in renal blood flow following administration of captopril were determined in a canine model of acute unilateral renal artery stenosis using rubidium-82 and positron emission tomography. Data were recorded in each of nine dogs under three conditions: 1) during a baseline control interval, 2) during renal artery stenosis, and 3) during stenosis with int...