🧬 biology

Beavers on the selection-drift seesaw: imprints of the past and present-day processes on the MHC genes variability in the Eurasian beaver

This study demonstrates that the Eurasian beaver's MHC gene variability was shaped by historical positive and balancing selection, severely reduced by a 20th-century population bottleneck, and only partially restored through recent expansion without evidence of current selection.

Jan Náhlovský, Marco Heurich, Steven K. Windels, Frank N. Rosell, Christian A. Robstad, Alexander P. Saveljev, Aleš Vore (…)2026-08-31
🧬 biology

Proteomic profiling of formalin-fixed paraffin-embedded specimens reveals candidate intraoperative diagnostic biomarkers for Hirschsprung disease

This study utilized proteomic profiling of formalin-fixed paraffin-embedded tissues to identify four novel candidate biomarkers (CTNNA2, EPDR1, NACAD, and NCAM2) that are specifically expressed in ganglionic regions, offering promising tools for the intraoperative diagnosis of Hirschsprung disease.

Shigemitsu Kojima, Ayako Yamazaki, Masahito Yoshihara, Ryo Konno, Kenichiro Konishi, Shinya Takazawa, Akira Nishi, Jun F (…)2026-08-31
🧬 biology

Associations between bacteriome and chemical pollutants in indoor dust from Czech households

This study analyzes indoor dust from 88 Czech households to reveal significant associations between specific bacterial genera, such as *Methylobacterium-Methylorubrum* and *Sphingomonas*, and various chemical pollutants like PAHs and PBDEs, suggesting that interactions between biological and chemical contaminants may alter indoor health risks despite the need for further mechanistic research to establish causality.

Klvanova Eva, Jan Böhm, Paula Marcinekova, Lisa Melymuk, Petr Kukacka, Petr Senk, Jakub Martinik, Petra Pribylova, Simon (…)2026-08-31