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Supercooling tolerance in the Mexican lizard Barisia imbricata (Squamata: Anguidae).
J Therm Biol
January 2025
Laboratorio de Recursos Naturales, Unidad de Biotecnología y Prototipos, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Estado de México, Mexico. Electronic address:
Environmental temperature impacts the physiological processes of reptiles, determines their hours of activity per day, and may constrain their ability to meet critical ecological requirements. When environmental temperatures reach freezing, a few lizard species exhibit two mechanisms (supercooling and freezing tolerance) to survive freezing, and these two processes depend on cryoprotective molecules, such as glucose. Organisms produce high glucose concentrations to reach lower than normal crystallisation points, and this blood glucose concentration can double after freezing.
View Article and Find Full Text PDFContinuous Core Body Temperature Monitoring for Heatstroke Alert via a Wearable In-Ear Thermometer.
ACS Sens
January 2025
Department of Emergency, Shanghai Changhai Hospital, Shanghai 200433, China.
Heatstroke, a global concern exacerbated by climate change, poses significant health risks, potentially leading to multiorgan damage and fatalities. Core body temperature (CBT) is a critical and precise indicator of heatstroke, and its continuous monitoring could serve as a pivotal tool for early detection. Traditional CBT measurements, often invasive (e.
View Article and Find Full Text PDFThe effects of aerobic exercise and heat stress on the unbound fraction of caffeine.
Front Physiol
January 2025
Human Physiology Research Unit, Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada.
Introduction: The fraction of drug circulating in the blood that is not bound to plasma proteins ( ) is considered pharmacologically active since it readily binds to its receptor. evidence suggests that changes in temperature and pH affect the affinity of drug binding to plasma proteins, resulting in changes in . In light of the well-established effects of exercise on body temperature and blood pH, we investigated whether an increase in blood temperature and decrease in pH facilitated through passive heating and exercise translated to a change in the of caffeine.
View Article and Find Full Text PDFEvaluation of ocular surface temperature in post-COVID-19 patients with different degrees of fever via infrared thermal imaging.
Sci Rep
January 2025
Department of Ophthalmology, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
This study aimed to evaluate ocular surface temperature (OST) in post-COVID-19 patients with different degrees of fever via infrared thermal imaging. There were 16 participants (32 eyes) in the control group, 22 participants (44 eyes) in the moderate and low post-COVID-19 fever group (M & L fever group), and 18 participants (36 eyes) in the high post-COVID-19 fever group (H fever group). All participants underwent an ophthalmic slit lamp examination and ocular thermography.
View Article and Find Full Text PDFDensification of hydroxyapatite/zirconia nanocomposites fabricated via low-temperature mineralization sintering process and their mechanical properties.
Sci Rep
January 2025
SANKEN, Osaka University, 8-1 Mihogaoka, Ibaraki, 567-0047, Osaka, Japan.
Hydroxyapatite/zirconia (HAP/ZrO) composites were fabricated via the low-temperature mineralization sintering process (LMSP) at an extremely low temperature of 130 °C to enhance the mechanical properties of HAP and broaden its practical applications. For this purpose, 5-20 vol% calcia-stabilized ZrO were introduced into HAP, and HAP/ZrO nanoparticles, mixed with simulated body fluid, were densified under a uniaxial pressure of 800 MPa at 130 °C. At 10 vol% ZrO, the relative density of the HAP/ZrO composite was determined to be 88.
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