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Feeding- and Light-Cycle Synergistically Regulate Mouse Blood Pressure Daily Rhythm via -Dependent and Independent Mechanisms.
J Biol Rhythms
January 2025
Department of Physiology, College of Medicine, University of Kentucky, Lexington, Kentucky.
Cardiovascular health requires the orchestration of the daily rhythm of blood pressure (BP), which responds to changes in light exposure and dietary patterns. Whether rhythmic light and feeding can modulate daily BP rhythm directly or via modulating intrinsic core clock gene is unknown. Using inducible global knockout mice (iBmal1KO), we explored the impact of rhythmic light, rhythmic feeding, or their combination on various physiological parameters.
View Article and Find Full Text PDFSex-based differences, diurnal and seasonal trends in thermoregulatory behaviour of nesting Painted Stork (Mycteria leucocephala).
Behav Processes
November 2024
Department of Environmental Studies, University of Delhi, New Delhi 110007, India. Electronic address:
Article Synopsis
- Storks use a cooling method called urohidrosis, where they wet their legs with excrement, and also spread their wings to regulate body temperature during hot weather.
- A study was conducted on Painted Storks in Delhi to observe these behaviors using videography, revealing that temperature and humidity impact their cooling techniques.
- Male storks engaged in more urohidrosis and wing-spreading than females, with these behaviors peaking during the hottest parts of the day and early in the nesting season, tapering off as temperatures dropped later in the season.
Sex differences in the adrenal circadian clock: a role for BMAL1 in the regulation of urinary aldosterone excretion and renal electrolyte balance in mice.
Am J Physiol Renal Physiol
January 2025
Department of Physiology and Aging, University of Florida, Gainesville, Florida, United States.
Brain and muscle ARNT-Like 1 (BMAL1) is a circadian clock transcription factor that regulates physiological functions. Male adrenal-specific () KO mice displayed blunted serum corticosterone rhythms, altered blood pressure rhythm, and altered timing of eating, but there is a lack of knowledge in females. This study investigates the role of adrenal BMAL1 in renal electrolyte handling and urinary aldosterone levels in response to low salt in male and female mice.
View Article and Find Full Text PDFAn agroecological approach to preparation and use of a milk protein production baseline.
PeerJ
September 2024
Agriculture and Life Sciences, Lincoln University Wellington, Lincoln, New Zealand.
Article Synopsis
- The paper discusses the challenges dairy managers face in reporting productivity and environmental outcomes, highlighting the inadequacy of traditional research methods for this purpose.
- It introduces a novel monitoring tool that uses historical and current farm data to assess milk protein production over time and compare it with neighboring farms.
- The study specifically explores how different feeding strategies can influence milk urea levels and dairy herd nitrogen excretion, offering insights for better management practices in dairy production.
The effects of winter cold on acute copper bioaccumulation and toxicity in brook char (Salvelinus fontinalis).
Aquat Toxicol
October 2024
Centre Eau Terre Environnement de l'Institut National de la Recherche Scientifique, Québec, QC, Canada. Electronic address:
Freshwater fish that are acutely exposed to copper (Cu) can experience disturbances of ion regulation and ammonia excretion. Temperature has been shown to affect Cu bioaccumulation and toxicity in fish, but the focus has largely been on warm temperature effects. Yet, acclimation of freshwater fish to near-freezing temperatures encountered during the winter of temperate regions can challenge fish condition and physiology, including ion regulation.
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