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Farlex Partner Medical Dictionary © Farlex 2012


A gene on chromosome 17q11.2-q12 that encodes inducible nitric oxide synthase (iNOS), a small molecule that has various roles in cellular functions and acts via a cGMP-mediated signal transduction pathway. iNOS is both tumouricidal and bactericidal, has nitrosylase activity, and mediates cysteine S-nitrosylation of cytoplasmic target proteins such COX2. It is regulated by calcium/calmodulin, induced by endotoxins and cytokines, including IFN-gamma, in synergy with bacterial lipopolysaccharides (LPS, TNF or IL1B/IL-1 beta). Aspirin inhibits its expression and function. Some genetic variants of NOS2 play a role in resistance to malaria. NOS2 is also a less preferred gene symbol for what is now designated as NANOS2, see there.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


Pediatrics A clinical trial–Inhaled Nitric Oxide Study which evaluated the effect of NO therapy–NOT in hypoxic respiratory failure–HRF in neonates. See Respiratory distress syndrome.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
After the cells were stimulated by Hx for different time, the gene expressions of COX-2, PGIS, iNOS, eNOS, HIF-1a, HIF-2a, and VEGF were detected by real-time RT-PCR [Figure 1].
Normal and NSIP histological patterns of alveolar septa and vessels are shown in Figures 1, 2, and 3, with immunohistochemical staining by nNOS (Figure 1, left panels), eNOS (Figure 1, middle panels), and iNOS (Figure 1, right panels); PAI-1 (Figure 2, left panels), [alpha]-SMA (Figure 2, middle panels), and IL-4 (Figure 2, right panels); IL-13 (Figure 3, left panels), and bFGF (Figure 3, right panels).
Five iNOS knockout (B 6.129 P2Nos2) mice, aged 7 to 10 weeks, weighing 15 to 20 g, were used per group.
Inducible nitric oxide synthase (iNOS) catalyzes the oxidative deamination of L-arginine to produce NO.
In the present communication, we wish to report the inhibitions of NO production of lipopolysaccharide (LPS)-stimulated RAW 264.7 cells by seven herbertenoids (3-7, 10, 11) and two cuparenoids (8, 9) isolated from liverworts, as well as the inhibition of LPS-induced inducible nitric oxide synthase (iNOS) by the representative compounds (9).
The stones serve as a signature look in Inos' landscaping projects, which he has been engaged in for over 20 years, since he was 21 years old.
The expression of the genes encoding IL-17A, and iNOS for mice by real-time PCR with SYBR Premix Ex Taq kit (TaKaRa).
In the present study, we examined potential influence of PAR4 activation on colonic sensations in a visceral hyperalgesia rat model and the expressions of iNOS, P2X7, IL-1[beta], and tryptase in MCs, which might regulate sensitization and the consequent heightened pain behavior in IBS.
Small amounts of NO are generated by these two isoforms, whereas the activity of inducible NOS (iNOS) is independent of calcium but is transcriptionally regulated by lipopolysaccharide, inflammatory cytokines, and so on.
The results of in vitro experiment indicated that, IL-2 and iNOS content increased quadratically with increasing addition of arginine (Pless than 0.01), and 80 g/mL arginine supplement group had the highest value.
In a recent preliminary study following exposure to hypergravity (20), we observed a significant elevation of iNOS mRNA expression levels in the livers of mice, suggesting that exposure to hypergravity is a biophysical condition that can adversely affect the liver.
It is suggested that the cells which are present from a significant distance from iNOS source may undergo apoptosis, while cells close to iNOS source may degrade the p53 protein formed resulting in protection from apoptosis, which suggest a special relationship in cells with regard to the effect of NO on apoptosis [31,32].