Life Science

Category archives for Life Science

Teleost fish living in saltwater environments are constantly compensating for water loss. This happens because their surroundings have higher concentrations of salts than their plasma and the rule of thumb in Biology is: water follows salt.  Thus these fish must somehow compensate for water loss in order to prevent dehydration. One way they do this is by…

Researchers at Stanford University have accomplished what was once considered impossible. They have partially restored vision in blind. Check out this Youtube video to see how they did it

During hibernation common hamsters (Cricetus cricetus) alternate their time between bouts of torpor during which their metabolic rate drops and body temperature is low and arousal during which body temperature is normal. Hibernation allows animals to conserve energy although it is not without costs as it often results in memory deficits, cell damage and reduced immune function.…

Researchers trying to find cures for cancer find naked mole rats rather interesting. Not only are these animals long-lived by rodent standards, they are also resistant to the development of cancer. By long-lived, we are talking up to 30 years! A team of researchers from Hokkaido University and Keio University in Japan have now isolated stem cells from…

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…

Heart rate decreases during diving in seals and other animals. Thus the ascending aorta becomes very important during diving as it helps to maintain blood pressure during prolonged dives. A new study published in the American Journal of Physiology – Regulatory, Integrative and Comparative Physiology was designed to examine the ascending aorta of hooded seals (Cystophora…

Shark week is back!

I LOVE Shark Week on Discovery Channel. I can’t wait to see the bizarre sharks episode. The excitement begins June 26th.

Big-brained birds

Birds get such a bad rap when it comes to intelligence. Sure they have relatively small brains, but scientists have known they are similar to primates with respect to their cognitive abilities. New research published in the Proceedings of the National Academy of Sciences presents data showing how this apparent dichotomy is possible. They found…

Heroic horseshoe crabs

The blue blood of horseshoe crabs contains a special chemical limulus amebocyte lysate (LAL) that medical laboratories obtain from thousands of animals annually to detect bacterial infections in humans. The labs are only allowed to draw up to 30% of their blood once a year. Despite these precautions, researchers are becoming increasingly concerned that some…

Although laboratory rodents are used to study estrogen-related disorders, they are different from humans in that they do not menstruate. Therefore, they are not used to understand or develop treatments for disorders related to menstruation, like endometriosis, premenstrual syndrome (PMS) or some fertility disorders. Researchers from Monash University (Australia), have now reported they’ve discovered a rodent…