Hypertension IS accompanied by architectural changes m the kidney, heart, and vessels that are often maladaptlve and can eventually contribute to end-organ disease such as renal failure, heart failure, and coronary disease Nitric oxide, an endogenous vasodllator and antlthrombotlc agent synthesized m the endothehum by a constltutlve mtnc oxide synthase, mhlblts growth-related responses to injur...

Recent studies have suggested that nitric oxide (NO.), the product of nitric oxide synthase in inflammatory cells, may play a part in tissue injury and inflammation through its oxidative metabolism. In this study the colonic generation of oxides of nitrogen (NOx) and nitric oxide synthase activity was determined in ulcerative colitis and Crohn's disease. Colonic biopsy specimens were obtained f...

1. The role of the potent vasodilator nitric oxide in the pathogenesis of pre-eclampsia is unclear. We have tested the hypothesis that placental activity of the enzyme which synthesizes nitric oxide (nitric oxide synthase) is reduced in pre-eclampsia. 2. Placentae were obtained after vaginal delivery or Caesarean section from women who had been assigned to the following groups according to stan...

A transient ipsilateral retinotectal projection is normally eliminated during embryonic development of the chick visual system. Administration of the NMDA receptor antagonist 5-methyl-10, 11-dihydro-5H-dibenzo[a,d]cyclohepten-5,10-imine (MK-801) during the developmental period in which this projection normally disappears prevented its complete elimination. Previous studies showed that tectal ce...

abstract background: nitric oxide (no) is a molecule that incorporates in many physiological processes of female reproductive system. recent studies suggested the possible role of endothelial isoform of nitric oxide synthase (enos) enzyme in female infertility. objective: the aim of this study is to evaluate the expression of endothelial nitric oxide synthase in endometrial tissue of women with...

In the present study, nitric oxide synthase/nitric oxide (NOS/NO) status was tested in the host plants infected with fungi, bacteria and virus. In each case cytosolic nitric oxide synthase (Cyt-NOS) of diseased plants was inhibited and inhibition was competitive in nature in respect to l-arginine, the substrate for the enzymic activity. Elevation of host nitric oxide (NO) level before infection...

Ascorbic acid and nitric oxide are known to play important roles in epilepsy. The aim of present study was to identify the involvement of nitric oxide (NO) in the anticonvulsant effects of ascorbic acid on penicillin-induced epileptiform activity in rats. Intracortical injection of penicillin (500, International Units (IU)) into the left sensorimotor cortex induced epileptiform activity within ...

background: migraine is a chronic  neurological  disorder, characterized  by recurrent  moderate to severe headaches. worldwide migraine a=ects nearly 15%. studies suggest that genes involved in the production of nitric oxide (no) may act as genetic  factors for migraine. no synthase  3 (nos3) by expressing  enzyme nos regulates  endothelial  derived no. one  class of  medications   used  as  f...

introduction: ischemia/reperfusion (ir) injury involves a complex interrelated sequence of events. high levels of nitric oxide (no) are generated with inducible form of nitric oxide synthase (inos) leading to the renal ir injury and glutathione (gsh) depletion. the present study was designed to investigate the effect of l-nil (n6- (1-iminoethyl)-l- lysine.hydrochloride), a selective inhibitor o...