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Gastric cancer (GS) remains one of the most common cancers worldwide. It is considered as the second most frequent cause of cancer death worldwide, although much geographical variation in incidence exists. Many studies before linked Helicobacter pylori (Hp) which is now considered as an important pathogen, to the risk of developing noncardia GS. This overview attempts to summarize the recent basic...
We examined the effects of various NO inhibitors on the healing of DSS-induced rat colitis. Experimental colitis was induced by feeding rats for 6 days with 2.5% DSS in drinking water. After DSS treatment, the animals were fed normally and killed various days up to 7 days later. L-NAME (a nonselective NOS inhibitor) or aminoguanidine (a selective iNOS inhibitor) was given p.o. twice daily for 6 days...
In this report we investigated the effect of 7-nitroindazole (7-NI), a specific neuronal inhibitor of nitric oxide synthase (nNOS) and L-NAME, a nonselective NOS inhibitor upon the adrenergic- and CRH-induced stimulation of the hypothalamic-pituitary-adrenal axis in nonanesthetized rast. 7-NI given i.p. and L-NAME administered i.c.v. considerably reduced ACTH and corticosterone secretion induced by...
Melatonin (MT) is known to protect gastrointestinal mucosa against various types of injury but its effects on esophageal damage have not been studied. We examined the effects of MT on acute esophageal injury and the mechanism involved in the action of this indole. Acute esophageal lesions were induced by perfusion with acid-pepsin solution using tube inserted through the oral cavity into the mid of...
Direct renal nitric oxide (NO) measurements were infrequent and no simultaneous measurements of renal cortical and medullary NO and local perfusion were reported. Large-surface NO electrodes were placed in renal cortex and medulla of anaesthetised rats; simultaneously, renal blood flow (RBF, index of cortical perfusion) and medullary laser-Doppler flux (MBF) were determined. NO synthase inhibitors:...
Acrolein, an environmental pollutant and a lipid peroxidation product, is implicated in vascular pathogenesis. Although evidence indicates a link between vascular pathogenesis and acrolein, no direct studies relating to effects of acrolein on vascular function and responses are known. This study investigated the effects of acrolein on vascular function to understand the underlying mechanism of acrolein-induced...
A substantial number of patients do not respond sufficiently to antidepressant drugs and are therefore often co-medicated with lithium as an augmentation strategy. Also inhibitors of nitric oxide synthase (NOS) have been used as an augmentation strategy, while inhibitors of NOS exhibit antidepressant-like properties in various animal models. Therefore, we hypothesized that modulation of NOS may be...
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