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Tag Archive for ‘oxidative stress’

Oddity of mammalian red blood cells

Mammalian red blood cells do not have a nucleus, which is different from birds, amphibians, reptiles, and fish (see image above). Many textbooks report that the absence of a nucleus provides room for more hemoglobin within the cells, which is important to fuel the relatively high metabolic rates of mammals. Hemoglobin is an important oxygen-binding molecule that allows the red blood cells to transport oxygen to tissues throughout the body […]

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2021 August Krogh Distinguished Lectureship

The August Krogh Distinguished Lectureship is the highest award given by the Comparative and Evolutionary Physiology section of the American Physiological Society. As the name implies, it is awarded to a distinguished physiologist who has made major and meritorious contributions to the field. This year’s August Krogh Distinguished Lecture was awarded to Dr. Ken Olson, Emeritus Professor, Indiana University School of Medicine – South Bend. His talk at the Experimental […]

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Dietary carotenoids and oxidative stress- What can we learn from birds?

Congratulations to this year’s Dr. Dolittle Travel Award winner, Alex Mohr from Arizona State University! Alex is presenting his research at the annual Experimental Biology conference in Orlando, FL (Mohr AE, Girard M, Rowe M, McGraw KJ, Sweazea KL. Varied Effects of Dietary Carotenoid Supplementation on Oxidative Damage in Tissues of Two Waterfowl Species).  Here is his award-winning blog entry describing his research on carotenoids in ducks: In relation to tissue […]

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Experimental Biology – Day 2

Yesterday was a great day for comparative physiology! Highlights from the seminars on comparative physiology: Melissa Reiterer, graduate student from Florida Atlantic University, presented her research on how freshwater turtles (Trachemys scripta) survive for long periods of time without oxygen and do not develop oxidative stress after oxygen is restored. The turtles are able to do this by creating their own antioxidants as well as eliminating oxidative stress. In contrast, mammals including humans, develop […]

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