Life Lines by Dr. Dolittle

Sponsored by the American Physiological Society

Tag Archive for ‘longevity’

If only I were a fruit fly…

  Oh, to be a Drosophila. A new study published in Science Advances reports that male Drosophila have an amazing tolerance for sleep deprivation. I wish I could say the same about humans. Like people, sleep duration in flies varies between individuals, with some animals getting only a few minutes of sleep a day. In many other species, chronic sleep deprivation is associated with shorter lifespans. In this new study, researchers […]

Continue Reading →

Monogamy is good for the heart

In honor of Valentine’s Day, let’s talk about prairie voles (Microtus ochrogaster). These animals are often used to study pair bonding because they are one of only a handful of mammalian species that form lifelong socially monogamous pair bonds after mating and cohabitating for at least 6 hours. According to a study published several years ago in Nature Neuroscience, this pair bonding behavior is regulated by specific genes in their […]

Continue Reading →

Experimental Biology 2017 – Day 5

Here are the highlights from the final day of the meeting: Carbon monoxide (CO) is not all that bad: Michael Tift, graduate student at Scripps Institute of Oceanography, described how the body naturally produces CO when red blood cells are broken down and CO can actually be protective against inflammation at low doses. His research was focused on measuring whether species that have more hemoglobin (from living in hypoxic environments) also have […]

Continue Reading →

Secrets to Longevity

A new article published in Physiological Reviews compared some remarkable similarities and differences between naked mole rats and humans. Both are relatively long-lived, highly social and have low natural selection pressures. But, this is about all they have in common. While humans are prone to developing age-related cancer, diabetes, heart disease and dementias, naked mole rats are rather resistant to these diseases. Instead, naked mole rats appear to maintain a youthful […]

Continue Reading →

Amazing longevity of Greenland sharks

A multi-national team of scientists sought to determine the age of Greenland sharks (Somniosus microcephalus). These animals grow rather slowly (about 1cm per year) and are the largest fish in the arctic (>500 cm long), but their longevity was not yet known. The team used radiocarbon dating of crystalline proteins found within the nuclei of the eye lens. Because these proteins are formed prenatally, they offer a rather accurate way to […]

Continue Reading →