NADPH oxidase is a multisubunit complex that assembles during phagocytosis to generate reactive oxygen species. Several components of this complex have been implicated in chronic granulomatous disease and Crohn's disease, highlighting the importance of reactive oxygen species in regulating host immune response. In this study, we use genetically deficient mice to elucidate how p40(phox), one sub...

Significant reduction of renal mass causes progressive deterioration of renal function and structure which is mediated by systemic and glomerular hypertension, hyperfiltration, oxidative stress, inflammation, and dyslipidemia. Niacin is known to improve lipid metabolism and exert antioxidant/anti-inflammatory actions. Therefore, we considered that niacin supplementation may attenuate oxidative ...

A procedure for uncovering novel protein kinases was used to search for enzymes in neutrophils that may catalyze the phosphorylation of the 47-Kd subunit of the NADPH oxidase system (p47-phox). This component of the oxidase can undergo phosphorylation on multiple sites. The method is based on the ability of renatured kinases to recognize exogenous substrates fixed in gels. We report that neutro...

BACKGROUND Angiotensin II induces both cardiac and vascular smooth muscle (VSM) hypertrophy. Recent studies suggest a central role for a phagocyte-type NADPH oxidase in angiotensin II-induced VSM hypertrophy. The possible involvement of an NADPH oxidase in the development of cardiac hypertrophy has not been studied. Methods and Results- Mice with targeted disruption of the NADPH oxidase subunit...

Prodigiosins are natural red pigments that have multi-biological activities. Recently, we discovered a marine bacterial strain, which produces a red pigment. Extensive two-dimensional nuclear magnetic resonance and mass spectrometry analysis showed that the pigment is a prodigiosin analogue (PG-L-1). Here, we investigated the effect of PG-L-1 on NADPH oxidase activity in macrophage cells. PG-L-...

chronic granulomatous disease (cgd), a rare inherited primary immunodeficiency disorder,  is  caused  by  mutation  in  any  one  of  the  genes  encoding  components   of nicotinamide adenine dinucleotide phosphate (nadph)-oxidase enzyme. ncf2 gene (encoding p67-phox component) is one of them and its mutation is less common to cause cgd (around 5-6%). here, we assessed mutation analysis of ncf...

Abstract Atherosclerosis is a process of arterial intima thickening caused by lipid deposition as consequence insufficient efferocytosis apoptotic cells M2 macrophages and excessive inflammatory cytokine secretion from M1 macrophages. NADPH oxidase 2 (NOX2) recognized major source ROS for enhancing macrophage functional polarization. We previously found that human contain significant amount end...

NADPH oxidase-2 (Nox2)/gp91(phox) and p47(phox) deficient mice are prone to hyper-inflammatory responses suggesting a paradoxical role for Nox2-derived reactive oxygen species (ROS) as anti-inflammatory mediators. The molecular basis for this mode of control remains unclear. Here we demonstrate that IFNγ/LPS matured p47(phox-/-)-ROS deficient mouse dendritic cells (DC) secrete more IL-12p70 tha...

Marine microbes are adapted to surviving in a variable phosphorus (P) environment. This adaptation frequently involves the presence of periplasmic or cell membrane-associated enzymes that enable them access to alternative sources of P when phosphate is depleted. In a recent study we identified the phosphatase PhoX as an enzyme that may be essential in mediating organic P acquisition in the ocea...