When we lift weights or do resistance exercises, our muscles adapt by changing which genes are turned on or off. These genetic changes (called transcriptional changes) help muscles grow stronger and improve their metabolism. Both young and older people experience these changes, but aging changes how muscles respond at the genetic level, which may help explain why older adults don’t gain muscle as easily as younger individuals. In a study […]
A new study published by researchers at Arizona State University, led by Dr. Carlo Maley, in Nature Communications set out to examine whether vertebrates that have high blood sugar are at greater risk of developing cancer. The current study follows on the heels of prior work by his team that was published in Evolution, Medicine, and Public Health last summer showing that cancer prevalence is lower in birds than other […]
The Midland Society of Physiological Sciences, comprised of physiologists in Nebraska, South Dakota, and North Dakota is hosting their annual chapter meeting this weekend at the University of South Dakota. Dr. Javier Stern, Distinguished University Professor and Director of the Center for Neuroinflammation and Cardiometabolic Diseases at Georgia State University will present the Keynote lecture on the role of neuropeptides in the hypothalamus of the brain. The title of his […]
The California Society of Physiologists is hosting their annual meeting today at the University of California Davis campus! Adapting to high altitude The keynote address will be given this evening by Dr. Tatum Simonson (Associate Professor, University of California San Diego) who will speak about, “Variation in human responses to low oxygen: Insights from Mount Everest to Machu Picchu.” Together with Dr. Francisco Villafuerte (Universidad Peruana Cayetano Heredia, Lima, Peru) […]
In 1966, Dr. Peyton Rous of The Rockefeller Institute for Medical Research received the Nobel Prize in Physiology or Medicine for his discoveries on viral origins of some cancers. In an experiment, he collected cancerous connective tissue from a hen. He then filtered the tissue to remove bacteria as well as cancer cells and administered the purified filtrate to healthy chickens. The chickens that received the filtered substance began to […]
As we talked about previously, bats are amazing mammals. Like Batman, they fly and fight off many potential enemies. – albeit their enemies are typically microscopic as opposed to cartoon-like super-villains. Their remarkable resilience to cancers and various pathogens has attracted the attention of scientists and even resulted in the formation of the Bat1K Consortium aimed at sequencing the genome of various species of bats to search for clues that […]
With the multitude of anti-aging products on the market today, it may be hard to believe that humans are one of the longest-living mammals. Why organisms age and how to slow down this process, or at least ensure that organisms stay healthy as they age, has been on the minds of many researchers over the years. Now, an international team of researchers called the Mammalian Methylation Consortium, led by Dr. […]
The risk of developing cardiovascular disease increases with aging as arteries can become increasingly stiff and the inner lining, called the endothelium, can become dysfunctional. Postdoctoral fellow Dr. Yara Bernaldo De Quiros Miranda (University of Las Palmas de Gran Canaria) is interested in understanding how bottlenose dolphins, Tursiops truncatus, protect their cardiovascular system during aging. She is currently a visiting scholar at the University of Colorado at Boulder where she […]
The most common type of naturally occurring brain tumor in humans and their feline as well as canine companions are meningiomas. The most aggressive form in humans is Meningioma C (MenG C). Unfortunately, there is currently no treatment available for MenG C and tumors often return even after radiation and surgery. Researchers were curious whether canine meningiomas were similar to human MenG C. In a newly published study, appearing in […]
Most mammals are iteroparous, meaning they can undergo multiple cycles of reproduction and gradually advance in age. In stark contrast, semelparous species only reproduce once before they die, as the physiological toll of mating is quite high. Examples of semelparous species include Pacific salmon, which swim upstream where they die after spawning, thus becoming nutrients for their own offspring and the environment. By only 10 months of age, male kalutas […]
Life Lines by Dr. Dolittle 