aging

Tag archives for aging

The cost of male pheromones

A new study conducted by researchers at Northwestern University examined the costs of reproduction in roundworms, otherwise known as C. elegans. They discovered that male roundworms can send two kinds of pheromones that prime females for reproduction. One type of pheromone they studied sparks the onset of puberty in young female worms while the other prolongs fertility in aging females. …

Skeletal muscle function and structure change as we age. Humans typically experience a loss of muscle mass or muscle weakness which can greatly reduce mobility and stability. While much is known about aging skeletal muscle in humans and rodents, less is known about horses, which are rather athletic animals that are living longer due to advancements in veterinary care…

Wednesday was the last day of the meeting that culminated in a closing banquet with an awards session to honor students who had exceptional presentations. What an impressive group of young comparative physiologists!  The plenary lecture was given by Dr. Steven Chown (Monash Univ, Australia). He spoke about climate change forecasts and continuing environmental changes…

I am really excited about the comparative physiology conference that starts this weekend in San Diego! Here is a press release about the meeting (author Stacy Brooks from the American Physiological Society): Bethesda, Md. (September 25, 2014) — More than 400 comparative and evolutionary physiologists will gather to present new research and discoveries in animal physiology at…

The naked mole rat is the longest lived rodent species (>31 years). Unlike most mammals, they seem resistant to many age-associated ailments until much later in life, making them an exciting model of healthy aging. They are also resistant to the development of cancer as mentioned in this prior post. According to the CDC, cardiovascular…

New research published in PLOS Genetics shows that starving C. elegans (Caenorhabditis elegans) during the late larval stage of development when the worms are undergoing tissue growth and formation halts cellular activity at previously unknown checkpoints in their development. These findings show that nutrition is an important cue to signal whether or not the worms should…

Additional highlights from the Comparative Physiology posters presented at the 2014 Experimental Biology conference in San Diego, CA: TA White, G Evans, GC Verzosa, T Pirtskhalava, T Tchkonia, JD Miller, JL Kirkland, and NK LeBrasseur. “Aging and cellular senescence and disease: The influence of diet and exercise” Not surprisingly, mice consuming a fast food diet…

Experimental Biology Day 2

Another exciting day at the Experimental Biology meeting for physiologists! Although I am a bit nervous about the session on the negative effects of sleep deprivation, “Sleepless in San Diego: Is Sleep Deprivation the New Silent Killer?” Hmmm, maybe I should have gone to bed a bit earlier last night… Dr. Karen Matthews (Univ of…

Experimental Biology

I am very excited about the upcoming Experimental Biology conference that starts next weekend. I just looked through the Spring newsletter for the Comparative and Evolutionary Physiology section of the American Physiological Society. Check out the exciting programming in comparative physiology at this year’s conference: Monday, April 28 10:30 AM – 12:30 PM Featured Topic: Abstract-Driven Trainee Session…

Great White Shark Longevity

Scientists have discovered that great white sharks (Carcharodon carcharias) actually live longer than previously thought (up to 23 years or so). Using radiocarbon age estimates, Dr. Hamady and colleagues at Woods Hole Oceanographic Institution determined the animals can live to the ripe-old-age of 70+ years. These findings mean that great white sharks, like humans, may…