L-NAME hydrochloride inhibits NOS with an IC50 of 70 μM. L-NAME is a precursor to NOS inhibitor L-NOARG which has an IC50 value of 1.4 μM.
N'-Nitro-D-arginine (NOLA), a nitric oxide synthesis inhibitor, also is a vasodilator that relaxes the smooth muscles and increases blood flow to the penis, improving erections. N'-Nitro-D-arginine also inhibits neutrophil migration by blocking receptors for tumour necrosis factor alpha (TNFα) and interleukin 8 (IL8) [1].
Regaloside A, a phenylpropanoid, shows significant DPPH radical scavenging activity of 58.0% at 160 ppm. Regaloside A has anti-inflammatory activity[1].
Aminopicoline (Ascensil) is a potent and nonselective inhibitor of NO synthase (NOS) isoenzymes (iNOS, nNOS, eNOS)[1].
Beclometasone dipropionate monohydrate, the prodrug of Beclometasone, is an orally active and potent glucocorticoid recepter agonist. Beclometasone dipropionate monohydrate acts via a glucocorticoid receptor and suppresses inflammation and hyperproliferation. Beclometasone dipropionate monohydrate can be used for asthma [1][2].
GW274150 is a novel arginine-competitive, NADPH-dependent iNOS inhibitor that has been identified from a series of acetamide amino acids that have a high selectivity for iNOS vs both eNOS (> 260-fold) and nNOS (> 219-fold) and high bioavailability (> 90%) after oral administration.Target: iNOSin vivo: GW274150 demonstrates a narrow neuroprotective therapeutic window against the toxic actions of 6-OHDA. GW274150 administration leads to a dose-dependent decrease in the number of iNOS-positive cells in the SNc of the 6-OHDA-lesioned animals. The iNOS inhibitor GW274150 fails to produce long-term neuroprotection after its withdrawal in the 6-OHDA-lesioned rat. [1]
Anemonin (Pulsatilla camphor), a selective iNOS inhibitor, is also a PKC-θ inhibitor. Anemonin can significantly inhibit the translation or protein stability of PKC-θ protein. Anemonin also ameliorates dextran sodium sulfate-induced acute ulcerative colitis (UC) in mice. Anemonin can be used in the research of inflammation-related diseases[1][2].
AMT hydrochloride is a selective inhibitor of inducible NOS (iNOS) with Ki of 4.2 nM[1].
Citroside A is a megastigmane sesquiterpenoid with cytotoxic and anti-inflammatory activities. Citroside A displays potential effects against NO production with an IC50 of 34.25 μM. Citroside A exhibits pronounced cytotoxicity against SGC-7901 and HeLa cells with IC50 values of 27.52 μM and 29.51 μM, respectively[1].
α7 nAchR-JAK2-STAT3 agonist 1 is a potent α7 nAchR-JAK2-STAT3 agonist, with an IC50 value of 0.32 μM for nitric oxide (NO). α7 nAchR-JAK2-STAT3 agonist 1 effectively suppresses the expression of iNOS, IL-1β, and IL-6 in murine RAW264.7 macrophages. α7 nAchR-JAK2-STAT3 agonist 1 can inhibit LPS-induced NO release, NF-κB activation and cytokine production. α7 nAchR-JAK2-STAT3 can be used for researching sepsis[1].
Regaloside B is a phenylpropanoid isolated from Lilium longiflorum. Regaloside B can inhibit the expression of iNOS and COX-2, has anti-inflammatory activity[1][2].
19-[(β-D-Glucopyranosyl)oxy]-19-oxo-ent-labda-8(17),13-dien-16,15-olide, the metabolite of Neoandrographolide, inhibits nitric oxide (NO) production in lipopolysaccharide-activated macrophages[1].
Irisflorentin, a naturally occurring isoflavone, is an abundant active constituent in Rhizoma Belamcandae. Irisflorentin markedly reduces the transcriptional and translational levels of inducible nitric oxide synthase (iNOS) as well as the production of NO. Anti-inflammatory activity[1].
(6E)-1,7-Bis(4-hydroxyphenyl)-6-hepten-3-one (compound7) is a nature product isolated from rhizomes of Curcuma kwangsiensis. (6E)-1,7-Bis(4-hydroxyphenyl)-6-hepten-3-one has inhibitory effect on NO production induced by LPS in macrophages with an IC50 value of 8.93 μM[1].
O-Acetylschisantherin L (Acetylschisantherin L) is a natural lignan, which exhibits inhibitory effects on LPS-induced NO production in BV-2 cells with an IC50 of 23.1 μM[1].
(+)-Hannokinol can be isolated from AMOMUM TSAO-KO (ginger family) fruit. (+)-Hannokinol inhibits lipopolysaccharide-induced nitric oxide production in BV2 microglia[1].
Valeriandoid F is an iridoid, which potently inhibits NO production with an IC50 value of 0.88 μM. Valeriandoid F has anti-inflammatory and antiproliferative activities[1].
Lethedoside A is a natural flavonoid that shows inhibitory activity for LPS-induced NO production in RAW 264.7 cells[1].
Kazinol B, a prenylated flavan with a dimethyl pyrane ring, is an inhibitor of nitric oxide (NO) production. Kazinol B improves insulin sensitivity by enhancing glucose uptake via the insulin-Akt signaling pathway and AMPK activation. Kazinol B has the potential for diabetes mellitus research[1][2].
Camstatin, a functionally active 25-residue fragment of PEP-19's IQ motif, binds calmodulin and inhibits neuronal nitric oxide (NO) synthase[1].
Mercaptoethylguanidine (MEG) dihydrobromide is selective inhibitor of the inducible nitric oxide synthase and peroxynitrite scavenger. Mercaptoethylguanidine (MEG) dihydrobromide has the potential for inflammatory bowel diseases research.
iNOS-IN-2 (Compound 53) is a potent down-regulator of inducible nitric oxide synthase (iNOS) protein. iNOS-IN-2 effectively inhibits the NO production (IC50=6.4 μM). iNOS-IN-2 has a potential therapeutic effect on chronic inflammation[1].
Aloenin aglycone (compound 13) is an NF-κB inhibitor that can be isolated from aloe exudate. Aloenin aglycone inhibits TNFα-induced NF-κB transcriptional activity (IC50: 18.7 μM). Aloenin aglycone (10 μM) also reduced inducible nitric oxide synthase (iNOS) and intercellular adhesion molecule 1 (ICAM-1) gene expression after treatment of HepG2 cells with 10 ng/mL TNFα[1].
1,3,5-Trihydroxy-4-prenylxanthone is a Na+/H+ exchange system (Na+/H+ Exchanger (NHE)) inhibitor with a minimum inhibitory concentration of 10 μg/mL[1]. 1,3,5-Trihydroxy-4-prenylxanthone is a phosphodiesterase type 5 (PDE5) (Phosphodiesterase (PDE)) inhibitor with an IC50 value of 3.0 μM[3]. 1,3,5-Trihydroxy-4-prenylxanthone inhibits Lipopolysaccharide (LPS) (Lipopolysaccharides (HY-D1056))-induced NO production in RAW264.7 macrophages, and has anti-inflammatory activities[2].
Banoxantrone (AQ4N), as a prototype hypoxia selective cytotoxin, can be reduced to AQ4, a potent topoisomerase II inhibitor. Banoxantrone selectively kills hypoxic cells via an iNOS-dependent mechanism. Banoxantrone shows a potent cytotoxicity and hypoxia-selective effect enhanced by radiation[1][2].
7-Nitroindazole is a selective nNOS inhibitor with antinociceptive and cardiovascular effects. 7-Nitroindazole is a useful tool to evaluate the biological roles of nitric oxide in the central nervous system[1][2].
YM-1 is a stable and soluble MKT-077 (HY-15096) analog and an orally active Hsp70 inhibitor. YM-1 induces cell death of HeLa cells and up-regulates the level of p53 and p21 proteins[1][2].
S-Methylisothiourea sulfate is a potent, selective and competitive inhibitor of inducible nitric oxide synthase (iNOS). S-Methylisothiourea sulfate exerts beneficial effects in rodent models of septic shock[1].
Physalin O is a physalin that can be isolated from Physalis angulata. Physalin O shows cytotoxicity to Hep G2 and MCF-7 cancer cells with IC50 values of 31.1 and 11.4 µM, respectively. Physalin O inhibits the production of nitric oxide (NO) and shows anti-inflammatory activities[1][2].
Heterophdoid A (Compound 1) is an anti-inflammatory agent. Heterophdoid A inhibits NO production with an IC50 of 5.93 μM in BV-2 cells[1].