Renal and vascular consequences of the chronic nitric oxide synthase inhibition. Effects of antihypertensive drugs.

The effects of the administration of either the angiotensin converting enzyme (ACE) inhibitor, quinapril (10 mg/kg/day, orally), or the calcium antagonist, diltiazem (100 mg/kg/day, orally), on blood pressure (BP), renal function, and vascular reactivity in isolated perfused mesenteric beds were studied in rats treated for 8 weeks with the nitric oxide (NO) synthesis inhibitor, NG-nitro-L-arginine methyl ester (LNAME, 40 mg/kg/day). The oral administration of LNAME significantly increased systolic BP values, which reached the levels of 186 +/- 7 mm Hg at week 8. Both quinapril and diltiazem reduced this, although the ACE inhibitor was more effective than the calcium antagonist.

Acute renal excretory actions of losartan in spontaneously hypertensive rats: role of AT2 receptors, prostaglandins, kinins and nitric oxide.

Aim: The effects of losartan on blood pressure and on renal function have mainly been attributed to AT1 receptor blockade. Experimental evidence suggests that these effects could also be related to the actions of angiotensin II through AT2 receptors or to vasodilatory systems. The present study was therefore designed to investigate the manner in which the acute effects of losartan on renal excretory function are affected during simultaneous administration of an AT2 receptor antagonist, a kinin B2 receptor antagonist, a cyclo-oxygenase inhibitor or a nitric oxide synthesis inhibitor.

Nitric oxide and prostaglandins in the prolonged effects of losartan and ramipril in hypertension.

We investigated the role of endogenous nitric oxide, kinins, and prostaglandins in the vasodepressor and renal excretory effects of the angiotensin II receptor antagonist losartan and the angiotensin-converting enzyme inhibitor ramipril administered for 1 week to spontaneously hypertensive rats. To this end, either losartan (10 mg/kg per day) or ramipril (2.5 mg/kg per day) was administered in drinking water with or without simultaneous administration of (1) the nitric oxide synthesis inhibitor Ng-nitro-L-arginine methyl ester (L-NAME, 6 mg/kg per day), (2) the cyclooxygenase inhibitor indomethacin (5 mg/kg per day), (3) the bradykinin B2 receptor antagonist Hoe 140 (0.

Long term use of benzodiazepines: the views of patients.

All long term benzodiazepine users in one inner London general practice were asked to participate in a study of their attitudes to their drugs. The 64 respondents had mixed views about benzodiazepines and did not conform to the stereotype presented in the media. Although 58% of the sample had attempted to stop taking benzodiazepines, this was usually not until at least one year of taking the drug.

Health of long term benzodiazepine users.

The physical and psychological health of long term (over one year) users of benzodiazepines in one general practice was assessed by patients' self reporting of illness and by general practitioners' records. Of 3741 patients registered with the practice, 82 had been prescribed a benzodiazepine, and 64 of these agreed to enter the study. All but five of these patients were over 40 years of age, nearly a third (19) were given a diagnosis related to depression by interviewers, and between a third and a half reported a current physical illness.

Frequency of self-reported 'anxiolytic withdrawal' symptoms in a group of female students experiencing anxiety.

This study describes the occurrence of self-reported perceptual phenomena in students experiencing anxiety. Phenomena like hypersensitivity to touch, hyposensitivity to taste and smell, and unusual tastes and smells appear to be non-specific and to be closely related to the level of anxiety. They emphasize the need for the development of techniques to elicit perceptual phenomena, and to investigate their occurrence and the intensity of their phenomena in variously defined groups.

[Treatment of congenital chloride diarrhea with prostaglandin synthetase inhibitor (author's transl)].

In a patient with congenital chloride diarrhea, the hyperreninemia, hyperaldosteronism, hypokaliemia and hypokaliuria diminished during treatment with prostaglandin synthetase inhibitor. These findings suggest that probably prostaglandins stimulate renin-aldosterone system in congenital chloride diarrhea.

Traumatic lesions of the duodenum.

Injuries of the duodenum are relatively uncommon on account of the organ's size and position. Since most of it is retroperitoneal, lesions involving it give rise to such subtle physical and radiological signs that the diagnosis is often overlooked in the early phase after injury. Twenty-six cases of duodenal injury are reviewed, 18 of which were due to penetrating wounds and the remaining 8 to blunt trauma.