Rabbit Anti-Human POLDIP2 Polyclonal antibody

AIM: To reveal the role of miRNAs in retinopathy of prematurity (ROP) by bioinformatics analysis. METHODS: The raw data of this study came from the researches of Wang et al and Zhao et al who analyzed the microRNA (miRNA) expression profile between ROP and controls. Based on the identified differentially expressed miRNAs, the related target genes, lncRNA and circRNA were predicted. Then we performed functional enrichment analysis to further analyze the functions of target genes. RESULTS: Hsa-miRNA-128-3p and hsa-miRNA-9-5p showed significantly different expression in both studies. LncRNA of POLDIP2, GAS5, NEFL and UHRF1, circRNA of ZNF280C_hsa_circ_001211 and SIAE_hsa_circ_002083, tar-get gene of QKI showed meaningful differential expression in ROP. Enrichment analysis showed that TGF-beta signaling pathway, PI3K-Akt signaling pathway and MAPK signaling pathway might play important roles in the progress of ROP. CONCLUSION: This research may provide a comprehensive bioinformatics analysis of differentially expressed miRNAs which are possibly involved in ROP.

High salt, Ang II (angiotensin II), and reactive oxygen species enhance progression of chronic kidney disease. We tested the hypothesis that a high salt intake generates specific reactive oxygen species to enhance Ang II contractions of afferent arterioles from mice with reduced renal mass (RRM). C57BL/6 mice were subjected to surgical RRM or sham operations and received 6% or 0.4% NaCl salt diet for 3 months. Ang II contractions were measured in perfused afferent arterioles and superoxide (O-2(-)) and hydrogen peroxide (H2O2) by fluorescence microscopy. RRM enhanced the afferent arteriolar gene expression for p47(phox) and neutrophil oxidase (NOX) 2 and high salt intake in RRM mice enhanced gene expression for angiotensin type 1 receptors, POLDIP2 and NOX4 and reduced catalase. High salt in mice with RRM enhanced arteriolar O-2(-) and H2O2 generation and maximal contractions to Ang II (10(-6) mol/L) that were dependent on O-2(-) because they were prevented by gene deletion of p47(phox) and on H2O2 because they were prevented by transgenic smooth muscle cell expression of catalase (tg(CAT-SMC)) and POLDIP2 gene deletion. Three months of tempol normalized arteriolar reactive oxygen species and Ang II contractions. However, arteriolar contractions to lower concentrations of Ang II (10(-8) to 10(-11) mol/L) were paradoxically inhibited by H2O2 and POLDIP2. In conclusion, both O-2(-) from p47(phox)/NOX2 and H2O2 from NOX4/POLDIP2 enhance maximal arteriolar Ang II contractions from RRM mice during high salt, but H2O2 and NOX4/POLDIP2 reduce the sensitivity to lower concentrations of Ang II by >100-fold. Tempol prevents all of these changes in function.