nNOS


Also found in: Acronyms.

nNOS

(en'nos),

NOS1

A gene on chromosome 12q14-qter that encodes neuronal nitric oxide synthase (nNOS), a widely expressed enzyme that produces nitric oxide (NO). A messenger molecule with diverse functions throughout the body, nNOS plays a role in a wide range of physiological and pathological processes, including neurotransmission, neurotoxicity, muscle contraction, sexual function, fluid homeostasis and atherosclerosis.
References in periodicals archive ?
Lysine-coated slides were prepared, and immunohistochemical analyses with nNOS (ab3511, polyclonal, IgG isotype, UK), iNOS (ab204017, polyclonal, IgG isotype, UK), and eNOS (ab50010, polyclonal, IgG isotype, UK) antibodies were performed.
Expression of iNOS was negative, but nNOS, Cav1.2, Cav1.3, IP[sub]3R1, IP[sub]3R2, IP[sub]3R3, and RyR2 could be detected positively in IHC in both achalasia and control groups [Figure 1]e.
The activity of eNOS inhibits beta-adrenergic inotropy, whereas the activity of nNOS may exhibit a positive inotropic effect by stimulating calcium release via the ryanodine receptor (RyR).
In the Western blot analysis for iNOS and nNOS, the Rb+CNI+Rb group demonstrated results similar to that in the C group, while the CNI group had significantly higher levels of iNOS and lower levels of nNOS (Figure 5).
Owyang, "Upregulation of bile acid receptor TGR5 and nNOS in gastric myenteric plexus is responsible for delayed gastric emptying after chronic high-fat feeding in rats," American Journal of Physiology-Gastrointestinal and Liver Physiology, vol.
On the other hand, oxidative stress response can cause neurocyte damage and endothelial apoptosis, which can reduce eNOS and nNOS in the corpus cavernosum, and these can decrease NO and then lead to DMED [51, 52].
Moreover, the upregulation of iNOS, not eNOS and nNOS, accounts for the compromised retinal function in DR through increasing NO levels [5].
The reaction took place in a final incubation volume of 100 [micro]L which includes 10 [micro]L of an aliquot of recombinant enzyme added to 50 [micro]L of a buffer with a final concentration of 25 mM tris-(hydroxymethyl)-aminometane hydrochloride (Tris-HCl), 1mM DL-dithiothreitol (DTT), 4 [micro]M 5,6,7,8-tetrahydro-L-biopterin dihydrocloride ([H.sub.4]-biopterin), 10 [micro]M flavin-adenine dinucleotide (FAD), 0,5 mM hypoxantine-9-[beta]-D-ribofuranoside (inosine), 0,5mg/mL bovine serum albumin (BSA), 0,1 mM Ca[Cl.sub.2], 10 [micro]M L-arginine, 10 [micro]g [mL.sup.-1] calmodulin (only for nNOS), and 0,05 [micro]M L-[[sup.3]H]-arginine, at pH 7.6, 10 [micro]L of a 10 mM in ethanol solution of each thiadiazoline 5a-e or pyrazoline 6a-r derivative, and enough water to reach 100 [micro]L.
To date, five genetic loci (Table 3) were reported to be linked to nanophthalmos: NNOS 2 is related to mutations in membrane frizzled-related protein (MFRP); NNOS 4 is related to mutations in TMEM98; MCOP6 is related to mutations in serine protease 56 (PRSS56) [50, 51]; and NNOS 1 and 3 were localized to chromosomal regions only (11p12-11q13 and 2q11-q14) [26, 29, 30].
Pain-sensitive DRG neurons are hyperpolarized by Oxt via a [Ca.sup.2+]/neuronal nitric oxide synthase (nNOS)/NO/ATP-activated [K.sup.+] channel pathway [58].
Energy failure in hypoxic injury also activates neuronal nitric oxide synthase (nNOS) and increases nitric oxide (NO) production, whereas primary source of NO in the vasculature is endothelial nitric oxide synthase (eNOS) under normal conditions.