Articles tagged with Body Temperature
Researchers have developed a computer vision system that can distinguish between survivors and deceased bodies from 4-8 meters away. Using cardiopulmonary motion, the technology detects tiny chest cavity movements indicating heartbeat and breathing rate, providing a more accurate means of detecting signs of life in disaster zones.
A new cooling vest has been developed to help athletes cope with sweltering summer conditions, such as the 2020 Summer Olympics. The vest, designed by Hiroshima University and a Japanese sportswear company, features ice packs and a cooling collar that can reduce heart rate and body temperature.
Researchers found four bat lineages that live at least four times longer than other mammals and identified life history features predicting extended life spans. Hibernating bat species in higher latitudes are found to live longer, possibly due to their ability to adjust body temperature.
Researchers used computer simulations to test the hypothesis that ankylosaurs' nasal passages acted as heat exchangers, warming and cooling air to regulate body temperature. The study found that the nasal passages could have provided energy savings of up to 84% during exhalation simulations.
A new study from Lund University finds that heatwaves can lead to smaller offspring and lower survival chances for animals. Researchers observed that birds with easier access to cooling mechanisms have larger and more viable offspring.
Scientists have discovered that a specific region of the brain, known as the ventrolateral preoptic nucleus (VLPO), plays a crucial role in regulating sleep and body temperature. Activating these cells causes a profound drive to sleep, while excessive stimulation can lead to prolonged sleep and a drop in body temperature.
Researchers found that activating a specific type of neuron in the hypothalamus can trigger hot-flash-like symptoms in mice, regardless of gender. This discovery validates previous research on hot flashes and suggests a neurological target for preventing them.
A study by University of Warwick and Manchester researchers reveals that small rises in temperature speed up a cellular 'clock' controlling the response to infections. This new understanding could lead to more effective drugs targeting A20 protein, which regulates inflammation.
Researchers from UNC School of Medicine found that natural body temperature affects the stability of a promising vaccine component, potentially rendering it ineffective against dengue and Zika viruses. The study suggests that stabilizing the pairing propensity of this component is critical to creating an effective vaccine.
Researchers at Albert Einstein College of Medicine found that intense exercise reduces appetite by activating temperature-sensitive receptors in the hypothalamus, a region of the brain that regulates metabolism and weight. The study provides evidence that body temperature can act as a biological signal that regulates feeding behavior.
Baby birds can regulate their body temperature despite hot nest box temperatures, but this comes at a cost: reduced growth. Researchers recommend placing nest boxes in shaded areas to minimize the impact of heat on nestlings.
A recent study found that female southern African pythons incubate eggs and care for their babies for about two weeks after hatching. During this time, the mother's body temperature increases significantly, and she loses up to 40% of her body mass.
A new study suggests that exercising can reduce the effectiveness of Ranolazine, a second-line therapeutic agent for angina pectoris and some inherited arrhythmias. Elevated body temperature and heart rate may decrease Ranolazine's ability to maintain healthy heart rhythms during exercise.
A review of available evidence found that pregnant women can safely engage in up to 35 minutes of high-intensity aerobic exercise at air temperatures of up to 25°C and 45% relative humidity. They can also participate in hot baths or saunas for up to 20 minutes without reaching the recommended core temperature limit of 39°C.
Researchers at St Joseph's Hospital and Medical Center discovered a mechanism that causes TRPV1 blockers to affect body temperature. The team found that blocking this activation can prevent hyperthermia and hypothermia in new compounds.
Researchers discovered that mitochondria operate at temperatures up to 50°C, contradicting the long-held assumption of 37.5°C. This finding has significant implications for our understanding of cellular processes and energy production.
Researchers found that astronauts' core body temperature increases gradually over 2.5 months, eventually reaching 38°C (100.4°F), impairing physical and cognitive performance. In space, sweat evaporation is slower than on Earth, leading to overheating during exercise.
A study published in Nature Communications identifies MKK6 as a key protein controlling white-to-brown fat conversion. This process enables lipids to be burned for heat instead of stored, potentially reducing obesity. Mice lacking MKK6 exhibit reduced body weight and protection against obesity.
The device uses a temperature difference between the hot and cold sides to generate electricity, with a high temperature difference of 20.9 °C, much higher than conventional wearable thermoelectric generators driven by body heat.
A team of researchers has created a personalized, 3D-printed 'earable' sensor that monitors core body temperature in real time. The device, integrated with data processing circuits and wireless module, detects ear temperature using infrared sensors.
A clinical study published in the Journal of Clinical Oncology found that TempTraq, a wearable Bluetooth patch, can detect body temperature changes up to 180 minutes earlier than the current standard-of-care method. This early detection empowers clinicians to intervene faster and improve patient outcomes.
Researchers found that patients with better consciousness levels had body temperature patterns aligned with a healthy 24-hour rhythm. Bright light stimulation improved two patients' conditions, and their circadian body temperature shifted closer to normal.
A study published by the American Academy of Neurology found that individuals with severe brain injuries whose body temperature patterns closely align with a healthy 24-hour rhythm score better on tests of recovery from coma and arousal. Researchers tested bright light stimulation on participants, revealing positive effects in two cases.
Researchers at Scripps Florida have identified a protein that promotes fat accumulation in animal models by slowing down energy breakdown. Deleting this protein's gene, IP6K1, has been shown to protect animals from both obesity and diabetes, regardless of diet or body temperature.
A new study finds that small bird species in the US desert Southwest are at higher risk of lethal dehydration during heat waves, with some regions becoming uninhabitable for many species. Conservation efforts may focus on thermal refugia and water sources to mitigate this threat.
A multicenter study found that therapeutic hypothermia and active temperature control have similar outcomes in young patients after in-hospital cardiac arrest. The study included 329 children between two days and 18 years old, who experienced cardiac arrest in the hospital setting.
Researchers discover first direct evidence of hoary bats going into torpor, or hibernation, in California's redwood forests. The study suggests that the bats' roosting habitat may be the key to understanding why they hibernate despite being migratory species.
Scientists have identified a specific group of neurons in the mouse hypothalamus that acts as the internal thermostat, regulating core body temperature. These neurons express the ion channel TRPM2 and limit excessive temperature rise in response to infection or trauma.
Researchers found that hibernating pygmy-possums can detect smoke and respond to danger when their body temperatures reach around 24 degrees Celsius. However, at colder temperatures, their reactions are slow and basic. This study has implications for prescribed bushfires in Australia.
A new Yale study found that warmer body temperatures impaired key immune system proteins in human airway cells, but did not completely disable the immune response. Researchers also identified two additional mechanisms that contribute to defense against the cold virus at core body temperature.
Researchers found that low temperatures trigger genes involved in biofilm formation, toxin production, and cold adaptation in Vibrio cholerae. Expression of virulence factors is reduced at low temperatures, suggesting a link to environmental lifecycle.
Researchers have created promising new cold-adapted vaccine strains that can grow at lower temperatures, making them ideal for mass production and distribution. These strains are highly unlikely to cause poliomyelitis in humans and can induce a potent immune response when inactivated.
A University of Queensland study finds that climate warming causes saltwater crocodiles to spend less time submerged, compromising their ability to avoid predators and forage underwater. The research suggests that elevated water temperatures pose a significant threat to the species' survival.
Researchers found that therapeutic hypothermia significantly reduces damage to the brain after cardiac arrest, with patients who received treatment experiencing better neurological outcomes and higher survival rates. The therapy has been shown effective on both shockable and non-shockable heart rhythms.
A systematic evidence review and meta-analysis found that peripheral thermometers have poor clinical accuracy and sensitivity compared to central thermometers. Central thermometers, such as rectal or bladder thermometers, are considered the gold standard for accurate temperature measurement.
A University of Tokyo research group has developed a flexible, lightweight temperature sensor that responds rapidly to tiny thermal changes. The sensor is composed of graphite and a semicrystalline acrylate polymer and can measure body temperature with high accuracy without additional circuitry.
High-resolution climate models show parts of the Persian Gulf region may surpass survivability thresholds for temperatures above 35°C, posing severe human health risks. The study suggests that curbing greenhouse gas emissions could prevent these extreme heat events.
A new study found that a 2°C warmer climate may lead to rapid population extinctions in common lizards, with up to 30% of European populations at risk. The researchers used experimental conditions to simulate warmer climates and observed increased adult mortality, decreased population growth rates, and a shift in demographic strategy.
Researchers found that mangrove rivulus fish rapidly lose body temperature by jumping out of water and onto solid ground, where evaporation cools them down. The study, led by the University of Guelph team, also showed that these fish can tolerate warmer waters better after being exposed to higher temperatures for a week.
Researchers at Aarhus University found that butterflies in Greenland have become smaller due to warmer summers, affecting their mobility and population dynamics. The study, published in Biology Letters, is one of the longest known time series on body size variation in butterflies.
A team of scientists discovered a molecular switch that regulates the body's circadian clock, allowing it to keep time. The 'phosphoswitch' maintains clock speed despite temperature changes and metabolic signals.
The new guidelines offer evidence-based recommendations for optimal temperature management during cardiopulmonary bypass, including cooling and rewarming rates. The guidelines aim to improve understanding of the relationship between temperature management and clinical outcomes, particularly its impact on brain function.
Researchers found that mild hypothermia in deceased organ donors significantly reduces delayed graft function in kidney transplant recipients by nearly 40%. This intervention could lead to an increase in the availability of kidneys for transplant and improve patient outcomes.
A study found that perioperative hypothermia affects patient experience and post-operative outcomes. The study revealed that most heat loss occurs from induction to recovery and that warming measures are often not applied enough.
Research reveals color has a major impact on how our body clock measures time of day, outperforming brightness as a reliable method. The study found that changes in light color between blue and yellow are more sensitive to the body clock than changes in brightness.
Research suggests that heterothermy, a metabolic adaptation, enabled land mammals to survive on drifting vegetation rafts and establish populations on Madagascar. Delayed childbirth and prolonged sperm storage also facilitated colonization by allowing females to reach the island with unborn offspring.
Reversible shape-memory polymers can change shape with body temperature and switch back to their original form when cooled. This technology has potential applications in biomedical devices, such as temporary bandages or home-care products for disabled individuals.
Researchers at University of Tokyo develop wearable fever alarm armband with built-in temperature sensor and power supply circuit using organic components. The device can detect high body temperatures and provide audible alerts, enhancing healthcare monitoring in infant, elderly, and patient care settings.
A new study published in JAMA found that electric fans are effective cooling devices for those without air conditioning during hot and humid periods. The researchers prevented heat-related elevations in heart and core temperature up to approximately 80% relative humidity at 97°F.
A new study published in Anesthesiology found that even when patients are actively warmed with forced air, their body temperature still decreases during the first hour of surgery. Patients who experience the most hypothermia are more likely to require blood transfusions.
The ISS-RapidScat instrument measured high wind speeds off the Atlantic Ocean near the northeastern and Mid-Atlantic states. Wind chills were reported near zero in several cities, posing a risk of frostbite, with temperatures 20-25 degrees below average.
Researchers found that the common cold virus, rhinovirus, replicates more efficiently in cooler temperatures, such as inside the nose. The study suggests that lower body temperature impairs the innate immune response to the virus, making it easier for the virus to replicate.
A randomized clinical trial found that cooling dialysis fluids to 0.5°C below body temperature protects against progressive white matter brain injury due to blood pressure instability. This simple intervention does not just improve patient comfort but completely prevents brain damage in patients undergoing dialysis.
Late-born dormice use power napping to catch up with earlier-born counterparts, achieving similar sizes by winter. This strategy also allows them to conserve energy and water during periods of food scarcity.
The study found that inhibiting neurons in specific brain regions eliminated stress-induced heat production and increased body temperature in rats. Stimulating these neurons caused the opposite effect, highlighting a key neural circuit connection in the development of psychological stress-induced hyperthermia.
Researchers found that Siberian hamsters require dietary cholesterol to enter daily torpor during winter. The minimum amount of cholesterol necessary for winter daily torpor is around 0.3%, similar to the amount found in insect larvae.
A recent NIH preclinical study suggests that even moderate doses of MDMA can be deadly in rats exposed to hot, crowded social settings. The study identifies the therapeutically-relevant cooling mechanism to counteract MDMA-induced hyperthermia.
A new iPhone app called Entrain offers custom schedules of light and darkness to help travelers adjust to new time zones. By following these schedules, users can reduce their jet lag recovery time by up to three days.
Researchers found elevated body temperature linked to worse fatigue in patients with relapsing-remitting multiple sclerosis, supporting previous studies on cooling garments and antipyretics. The study suggests a complex relationship among fatigue, body temperature, and inflammatory processes.
Research from University of Adelaide reveals South Australia has a higher rate of hypothermia deaths than Sweden, with elderly women indoors being the main victims. The study attributes this to poor heating and insulation, as well as lack of social interaction and multiple underlying medical conditions.