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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...
Potential antipsychotic effects of a selective non-competitive antagonist of metabotropic glutamate receptor 5 (mGluR5), 2-methyl-6-phenylethynylpyridine (MPEP), was examined in two commonly used screening tests: (1) the hyperactivity induced by an NMDA receptor antagonist phencyclidine (PCP), and (2) the hyperactivity induced by an indirect dopamine agonist, D-amphetamine. PCP was administered at...
Reactive hyperemia (RH) is an abrupt blood flow increase following release from mechanical occlusion of an artery, with restoration of intra-arterial pressure. The mechanism of this postocclusion increase in blood flow in the gut is multifactorial. Relaxation of intestinal resistance vessels, observed during RH, may involve myogenic, metabolic, hormonal and neurogenic factors. Evidence exists that...
The aim of the study was to evaluate the effect of L-arginine (L-Arg) on haemostasis in stasis model of venous thrombosis in renal hypertensive rats. The effect of the single dose (i.v.300 mg/kg bolus+300 mg/kg/h) and of the 10-day application (p.o. 1 g/kg, once daily) of L-Arg was determined. L-Arg reduced the blood pressure both in the acute and long-term application. The single dose of L-Arg decreased...
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