Physiology explores how living systems function, from the microscopic signals inside a single cell to the complex rhythms of an entire organism. This field seeks to understand the mechanical, physical, and biochemical processes that keep life moving, offering crucial insights into health, disease, and the body's remarkable ability to adapt.

On Gist.Science, we process every new preprint in this category from bioRxiv to make these rapid discoveries accessible to everyone. For each study, we provide both a clear, plain-language explanation and a detailed technical summary, ensuring that whether you are a curious student or a seasoned researcher, you can grasp the latest findings without getting lost in jargon.

The papers listed below represent the newest physiological research recently shared on bioRxiv, ready for you to explore.

Lysosomal abundance in young and aged mouse hearts assessed by In Vivo Imaging Systems (IVIS) Lysotracker imaging and autophagy-related gene expression

This study demonstrates that while cardiac ageing in mice preserves total lysosomal abundance and acidification capacity as measured by IVIS Lysotracker imaging and key gene expression, it may induce a slight increase in autophagic demand indicated by upregulated Sqstm1, highlighting the value of combining whole-organ imaging with molecular analysis to assess cardiac proteostasis.

Albulushi, J., Coghlan, H., Moothanchery, M., Dev, A., Akerman, E., Heenan, J., Helassa, N., Adegbite, O., Sharma, P., Patel, F., Harrison, L., Maguire, M. L., Mirams, G. R., Sweitach, P., Poptani, H. (…)2026-02-17❤️ physiology

Characterization of transcriptomic profiles underlying gross morphological changes observed in semelparous pink salmon (Oncorhynchus gorbuscha)

This study characterizes the transcriptomic profiles of migrating pink salmon across three critical tissues, revealing that major molecular changes occur primarily around spawning and are marked by coordinated catabolic processes, immune activation, and lipid mobilization orchestrated by dominant endocrine receptor ohnologs.

Butensky, M., Phelps, M. P.2026-02-14❤️ physiology

Propionate oxidation by Geobacter sulfurreducens is electron acceptor dependent

This study demonstrates for the first time that *Geobacter sulfurreducens* can oxidize propionate via the methylmalonyl-CoA pathway, but only when fumarate or acetate is present as a specific electron acceptor or co-substrate, highlighting the electron acceptor-dependent nature of this metabolic capability.

Hernandez Villamor, D., Bautista Angeli, J. R., Jeaidi, A., Joaquin Garcia, A., Rabaey, K., Prevoteau, A.2026-02-13❤️ physiology

Testosterone alleviates inflammation but increases the methacholine response in mice with allergic lung inflammation

While testosterone significantly reduces allergic lung inflammation induced by house dust mites in mice, it simultaneously increases airway smooth muscle responsiveness to methacholine, suggesting a complex role in asthma pathophysiology.

Henry, C., Boucher, M., Rojas-Ruiz, A., Camillari, L., Gelina, L., Beaulieu, M.-J., Marsolais, D., Joseph, V., Bosse, Y.2026-02-12❤️ physiology