I have read with great interest the article by Emre et al. Their work showed that sodium nitroprusside could be elegantly used to reduce intestinal ischemia reperfusion. This is underscored by a decrease in inflammation as compared to using a placebo. I would like to further discuss this article by introducing a major route through which sodium nitroprusside could suppress inflammation. The rec...

It has previously been shown that nitric oxide (NO) synthase is involved in the development of opioid tolerance. The aim of the present work was to study the effect of NO on μ-opioid receptor (MOR) desensitization. Furthermore, we explored the possible role of reactive oxygen species (ROS) in this effect. Single-unit extracellular and whole-cell patch-clamp recordings were performed on locus co...

Endothelial dysfunction is important in the pathophysiology of preeclampsia. No study has examined endothelial function sequentially at different gestations before development of the clinical syndrome and after delivery (to compare maternal from placental influences). We sought to determine whether endothelial function changes before the clinical development of preeclampsia. We measured skin mi...

Cerebral blood flow (CBF) and mean arterial pressure (MAP) were monitored in six normal baboons and six further animals in which an artificial subarachnoid haemorrhage (SAH) had been induced one week previously. MAP was reduced by the infusion of sodium nitroprusside. In the normal animals with administration of sodium nitroprusside, CBF increased initially but started to decrease as MAP was re...

OBJECTIVE Vascular disease in type 1 diabetes is a complex and multifactorial process, which probably begins in childhood in association with the onset of diabetes. To determine the possible factors involved, we measured microvascular responses to endothelium-dependent (acetylcholine) and endothelium-independent (sodium nitroprusside) vasodilators in 56 patients with type 1 diabetes (aged 9-22 ...

Determination of thiosulphate using photochemical exchange reaction of sodium nitroprusside has been investigated. It is an inexpensive, faster and convenient quantitative method. Sodium nitroprusside is a photolabile complex which undergoes photochemical ligand exchange reactions rapidly. Some recent efforts have been made to utilise such reactions for the estimation of some nitrogen containin...

The effects of trimetaphan camsylate and sodium nitroprusside on the catecholamine response to cardiac surgery were compared in a randomised double blind study of twelve male patients undergoing elective myocardial revascularisation. The solutions were titrated to maintain a mean arterial pressure of 70-85 mm Hg before and after bypass and less than 70 mm Hg during bypass. The rise in plasma ad...

We investigated endothelium-dependent relaxation in rat aortae, using three models of experimental hypertension: deoxycorticosterone and salt; one-kidney, one clip renovascular hypertension; and coarctation. Isolated aortae were contracted with phenylephrine, and relaxation was subsequently induced with acetylcholine or calcium ionophore A23187. Blood vessels denuded of endothelium did not rela...

111E DETECTION OF KETONE BODIES has become an important clinical measurement during the past 50 years. The two types of reactions most commonly employed for ketone detection are nitroprusside tests, which react with acetone and acetoacetic acid, and ferric chloride tests, which react with acetoacetic acid but not with acetone. Ferric chloride tests are very insensitive, give false-positive reac...

The mouse has several distinct advantages as an experimental model for study of the cochlear blood flow (CBF) in the mammal, particularly for studies involving genetic manipulation, development and aging factors. In this investigation we evaluated the effects of selected vasodilating agents on CBF using laser-Doppler flowmetry. Sodium nitroprusside, hydralazine and pentoxifylline were applied t...