Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Correction to: An expos é of Frappellian Motion
(Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology)
Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology - April 28, 2023 Category: Physiology Source Type: research

The rete mirabile: a possible control site for swimbladder function
In this study, the data set was reanalyzed for the presence of receptor proteins and proteins involved in intracellular signaling pathways. A large number of expressed receptor proteins and proteins involved in intracellular signal transduction was detected. Several G-protein-coupled receptor signal pathways were significantly enriched in their expression level, in particular receptors and signaling pathways involved in the control of blood flow. The enriched signaling pathways also include pathways involved in trafficking of crucial transport proteins like, monocarboxylate transporters, V-ATPase, and aquaporin. The data, ...
Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology - April 15, 2023 Category: Physiology Source Type: research

An atlas of plasma-accessible carbonic anhydrase availability in the model teleost, the rainbow trout
AbstractThe unique teleost oxygenation system that permits enhanced oxygen unloading during stress comprises three main characteristics: pH-sensitive haemoglobin, red blood cell (RBC) intracellular pH (pHi) protection, and a heterogeneous distribution of plasma-accessible carbonic anhydrase (paCA). A heterogeneous distribution of paCA is essential; its presence permits enhanced oxygen unloading during stress, while its absence at the gills maintains conditions for oxygen uptake by pH-sensitive haemoglobins. We hypothesised that paCA would be absent in all four gill arches, as has been previously indicated for arch two, and...
Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology - April 8, 2023 Category: Physiology Source Type: research

Blood chemistry and biliverdin differ according to reproduction and tourism in a free-living lizard
AbstractChanges in the physiological health of species are an essential indicator of changing conditions and environmental challenges. Reponses to environmental challenges can often induce stress, influence physiology, and change metabolism in organisms. Here we tested blood chemistry parameters indicative of stress and metabolic activity using an i-STAT point-of-care blood analyzer in seven populations of free-ranging rock iguanas exposed to varying levels of tourism and supplemental feeding. We found significant differences in blood chemistry (glucose, oxygen, carbon dioxide, hematocrit, hemoglobin, calcium, potassium, a...
Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology - March 30, 2023 Category: Physiology Source Type: research

Seasonal flexibility of the gut structure and physiology in Eremias multiocellata
This study reveals the intestinal regulation and adaptation mechanisms inE. multiocellata in response to the hibernation season. (Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology)
Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology - March 30, 2023 Category: Physiology Source Type: research

Differential bone remodeling mechanism in hindlimb unloaded and hibernating Daurian ground squirrels: a comparison between artificial and natural disuse within the same species
AbstractLoss of bone mass can occur in mammals after prolonged disuse but the situation for hibernators that are in a state of torpor for many months of the year is not yet fully understood. The present study assesses the bone remodeling mechanisms present in Daurian ground squirrels (Spermophilus dauricus) during hibernation as compared with a model of hindlimb disuse. Differences in microstructure, mechanical properties, bone remodeling-related proteins (Runx2, OCN, ALP, RANKL, CTK and MMP-9) and key proteins of Wnt/ β-catenin signaling pathway (GSK-3β and phospho-β-catenin) were evaluated in ground squirrels under 3 ...
Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology - March 29, 2023 Category: Physiology Source Type: research

Why study sleep in flatworms?
AbstractThe behaviors that characterize sleep have been observed across a broad range of different species. While much attention has been placed on vertebrates (mostly mammals and birds), the grand diversity of invertebrates has gone largely unexplored. Here, we introduce the intrigue and special value in the study of sleeping platyhelminth flatworms. Flatworms are closely related to annelids and mollusks, and yet are comparatively simple. They lack a circulatory system, respiratory system, endocrine glands, a coelom, and an anus. They retain a central and peripheral nervous system, various sensory systems, and an ability ...
Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology - March 11, 2023 Category: Physiology Source Type: research

Age-related changes in antioxidant defenses of the Mediterranean centipede Scolopendra cingulata (Chilopoda)
AbstractThe activity of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), glutathione reductase (GR), and glutathione S-transferase (GST), as well as the concentrations of sulfhydryl (SH) groups and glutathione (GSH) were analyzed in five age classes of the Mediterranean centipedeScolopendra cingulata as follows: embryo, adolescens, maturus junior, maturus, and maturus senior. The data obtained showed the presence of SOD, CAT, GSH-Px, GR, GST, and SH groups in embryos. The transition from embryo to adolescens was accompanied by an increase in the activities of all studied enzymes, in response to ...
Source: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology - March 9, 2023 Category: Physiology Source Type: research