7-Nitroindazole - CAS 2942-42-9
Category: Inhibitor
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Molecular Formula:
Molecular Weight:
Nitric oxide synthase (NOS)
7-Nitroindazole is a nitric oxide synthase inhibitor.
≥98% by HPLC
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1.The role of NMDA receptor and nitric oxide/cyclic guanosine monophosphate pathway in the antidepressant-like effect of dextromethorphan in mice forced swimming test and tail suspension test.
Sakhaee E;Ostadhadi S;Khan MI;Yousefi F;Norouzi-Javidan A;Akbarian R;Chamanara M;Zolfaghari S;Dehpour AR Biomed Pharmacother. 2017 Jan;85:627-634. doi: 10.1016/j.biopha.2016.11.073. Epub 2016 Nov 28.
Depression is a devastating disorder which has a high impact on the wellbeing of overall society. As such, need for innovative therapeutic agents are always there. Most of the researchers focused on N-methyl-d-aspartate receptor to explore the antidepressant like activity of new therapeutic agents. Dextromethorphan is a cough suppressant agent with potential antidepressant activity reported in mouse force swimming test. Considering N-methyl-d-aspartate as a forefront in exploring antidepressant agents, here we focused to unpin the antidepressant mechanism of dextromethorphan targeting N-methyl-d-aspartate receptor induced nitric oxide-cyclic guanosine monophosphate signaling. Dextromethorphan administered at a dose of 10 and 30mg/kg i.p significantly reduced the immobility time. Interestingly, this effect of drug (30mg/kg) was inhibited when the animals were pretreated either with N-methyl-d-aspartate (75mg/kg), or l-arginine (750mg/kg) as a nitric oxide precursor and/or sildenafil (5mg/kg) as a phosphodiesterase 5 inhibitor. However, the antidepressant effect of Dextromethorphan subeffective dose (3mg/kg) was augmented when the animals were administered with either L-NG-Nitroarginine methyl ester (10mg/kg) non-specific nitric oxide synthase inhibitor, 7-Nitroindazole (30mg/kg) specific neural nitric oxide synthase inhibitor, MK-801 (0.
2.Neuronal nitric oxide synthase inhibition prevents cerebral palsy following hypoxia-ischemia in fetal rabbits: comparison between JI-8 and 7-nitroindazole.
Yu L;Derrick M;Ji H;Silverman RB;Whitsett J;Vásquez-Vivar J;Tan S Dev Neurosci. 2011;33(3-4):312-9. doi: 10.1159/000327244. Epub 2011 Jun 10.
Cerebral palsy and death are serious consequences of perinatal hypoxia-ischemia (HI). Important concepts can now be tested using an animal model of cerebral palsy. We have previously shown that reactive oxygen and nitrogen species are produced in antenatal HI. A novel class of neuronal nitric oxide synthase (nNOS) inhibitors have been designed, and they ameliorate postnatal motor deficits when administered prior to the hypoxic-ischemic insult. This study asks how the new class of inhibitors, using JI-8 (K(i) for nNOS: 0.014 μM) as a representative, compare with the frequently used nNOS inhibitor 7-nitroindazole (7-NI; K(i): 0.09 ± 0.024 μM). A theoretical dose equivalent to 75 K(i) of JI-8 or equimolar 7-NI was administered to pregnant rabbit dams 30 min prior to and immediately after 40 min of uterine ischemia at 22 days gestation (70% term). JI-8 treatment resulted in a significant decrease in NOS activity (39%) in fetal brain homogenates acutely after HI, without affecting maternal blood pressure and heart rate. JI-8 treatment resulted in 33 normal kits, 2 moderately and 13 severely affected kits and 5 stillbirths, compared with 8 normal, 3 moderately affected and 5 severely affected kits and 10 stillbirths in the 7-NI group.
3.Mechanisms underlying the vascular and hypotensive actions of the labdane ent-3-acetoxy-labda-8(17),13-dien-15-oic acid.
Simplicio JA;Pernomian L;Simão MR;Carnio EC;Batalhão ME;Ambrosio SR;Tirapelli CR Eur J Pharmacol. 2014 Mar 5;726:66-76.
We investigated the mechanisms underlying the vasorelaxant and hypotensive actions of the labdane-type diterpene ent-3-acetoxy-labda-8(17),13-dien-15-oic acid (labda-15-oic acid). Vascular reactivity experiments were performed in aortic rings isolated from male Wistar rats. cAMP and cGMP were measured by enzyme immunoassay (EIA) whereas nitrate measurement was performed by chemiluminescence. Nitric oxide (NO) concentration ([NO]c) was measured in endothelial cells by flow cytometry. The cytosolic calcium concentration ([Ca2+]c) in vascular smooth muscle cells (VSMC) was measured by confocal microscopy. Blood pressure measurements were performed in conscious rats. Labda-15-oic acid inhibited the contraction induced by phenylephrine and serotonin in either endothelium-intact or endothelium-denuded rat aortic rings. The labdane significantly reduced CaCl2-induced contraction in a Ca2+-free solution containing KCl or phenylephrine. Labda-15-oic acid (0.1–300 μmol/l) concentration-dependently relaxed endothelium-intact and endothelium-denuded aortas pre-contracted with either phenylephrine or KCl. In endothelium-intact rings, the relaxation induced by labda-15-oic acid was affected by L-NAME, 7-nitroindazole, ODQ, hemoglobin, Rp-8-Br-Pet-cGMPS and thapsigargin.
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CAS 2942-42-9 7-Nitroindazole

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