A Comprehensive Study of the Association between Gene rs1137101 Variant and Risk of Digestive System Cancers.

Objective: The leptin receptor, encoded by the gene, is involved in tumorigenesis. A potential functional variant of , rs1137101 (Gln223Arg), has been extensively investigated for its contribution to the risk of digestive system (DS) cancers, but results remain conflicting rather than conclusive. Here, we performed a case-control study and subsequent meta-analysis to examine the association between rs1137101 and DS cancer risk.

[Functional polymorphism sites in non-coding regions of folate metabolism-related genes in the reproductive-aged population of Hubei Province].

Objective: To investigate the distribution of the functional polymorphisms in the non-coding regions of folate metabolism-related genes in the reproductive-aged population of Hubei Province.

Methods: Using Sanger sequencing, we examined the polymorphisms of the genes MTR (rs28372871 and rs1131450), MTRR (rs326119) and CBS (rs2850144) in 790 subjects before and during pregnancy from April 2020 to March 2021. We compared the distributions of the four loci between different populations.

[Correlation of sperm DNA fragmentation index with age and semen parameters in infertile men].

Objective: To explore the correlation of the sperm DNA fragmentation index (DFI) with age, sperm concentration and sperm motility in infertile men.

Methods: We collected semen samples from 531 infertile males in our hospital from January 2016 to June 2017. We determined the semen parameters using the computer-assisted semen analysis system, measured the sperm DFI by sperm chromatin structure assay, and analyzed the correlation of the sperm DFI with the age, sperm concentration and sperm motility of the patients.

MicroRNA-124 Prevents H2O2-Induced Apoptosis and Oxidative Stress in Human Lens Epithelial Cells via Inhibition of the NF-κB Signaling Pathway.

Aim: To investigate the regulation of microRNA-124 -(miRNA-124) on NF-κB pathway from H2O2-induced apoptosis and oxidative stress in human lens epithelial cells (hLEC).

Methods: The MTT (3-[4, 5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide) assay was used to detect hLEC -viability. HLECs were divided into Blank, H2O2, mimics (miRNA-124 mimics) + H2O2, NC+ H2O2, pyrrolidine dithiocarbamate (PDTC; NF-κB signaling pathway inhibitor) + H2O2, and inhibitors (miRNA-124 inhibitors) + PDTC + H2O2 groups.