Toshifumi Osaka

TL;DR: It is analyzed how growth of bacterial populations was stimulated by acetate or methanol as the external carbon source in nitrogen-removal systems and characterized nitrite reductase genes (nirS and nirK) as functional marker genes for denitrifier communities in acetate- or meethanol-assimilating populations.

TL;DR: Results suggest that Bifidobacterium species enhance intestinal epithelial barrier function via metabolites such as acetate, and suggest that therapies targeted at specifically restoring tight junction barrier function are thought to have great potential as an alternative or supplement to immunology‐based therapies.

TL;DR: There were no major changes of bacterial populations in the methanol-fed reactor at 4%NaCl, although the relative abundances of the genera Azoarcus and Methylophaga increased when salinity concentration was at 1-3% NaCl, indicating that methanl-utilizing populations in activated sludge was unable to adapt to a high saline environments.

TL;DR: Acute intestinal inflammation is a perturbation factor of gut microbiota but alters the intestinal environments suitable for Lactobacillus members, leading to recovery in dextran sulfate sodium-induced colitic mice.

TL;DR: This study evaluated the nitrogen removal performance of polyethylene glycol (PEG) gel carriers containing entrapped heterotrophic denitrifying bacteria and revealed that Hyphomicrobium was mainly involved in denitrification in the methanol-fed Denitrification reactors.