Plasma homocysteine is associated with increased oxidative stress and antioxidant enzyme activity in welders.

The purpose of this study was to examine the association of vitamin B6 status and plasma homocysteine with oxidative stress and antioxidant capacities in welders. Workers were divided into either the welding exposure group (n = 57) or the nonexposure controls (n = 42) based on whether they were employed as welders. There were no significant differences in vitamin B₆ status and plasma homocysteine concentration between the welding exposure group and the nonexposure controls.

Nanoscopic analysis on pH induced morphological changes of flagella in Escherichia coli.

Background And Purpose: Flagella contribute to the virulence of pathogenic bacteria through chemotaxis, motility, and adhesion. Understanding the various functions of flagella may provide insight into mechanisms of bacterial infection and transmission. The objectives of our study were to apply biophysical and biochemical methods to investigate the mechanisms of pH-dependent changes in flagella functions.