Mar 2, 2021
Lynne Peterson is the Senior Medical Writer for Trends-in-Medicine.
Here is the medical news to watch for March 1-7, 2021.
Allergy/Asthma The American Academy of Allergy, Asthma, & Immunology (AAAAI) annual (virtual) meeting wraps up on March 1.
Cardiology The Cardiovascular Research Technologies (CRT) virtual meeting started on Feb. 13 and is continuing every Friday and Saturday through April 24. The FDA Town Hall always a good session will be held Friday, March 5, and the discussion will center on mitral valves. On Saturday, March 6, the program will include late breaking clinical trials in structural heart as well as transcatheter aortic valve replacement (TAVR) and a live case from the University of Pennsylvania Medical Center.
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Scientists describe genetic mechanisms behind mating process of ciliates
Conjugation (or mating) of ciliates is a unique phenomenon among living beings. They have sex not for reproduction or pleasure they seek to increase genetic variation. Scientists from St Petersburg University, together with colleagues from Poland and France, have studied the mating process in five sibling species of the Paramecium aurelia complex. Their findings enabled them to describe genetic mechanisms behind this phenomenon. The research results have been published in the prestigious scientific journal Genome Biology and Evolution.
The mating process is one of the most important mechanisms for maintaining genetic variation in natural populations. The emergence of sexual reproduction turned out to be the most important evolutionary innovation that facilitated the evolution of eukaryotes. Paramecium is a well-known genus of ciliated protists with a complex system of sexes , or mating types. Paramecium rep
Study highlights the epigenetics of life at high altitudes
Humans inhabit an incredible range of environments across the globe, from arid deserts to frozen tundra, tropical rainforests, and some of the highest peaks on Earth. Indigenous populations that have lived in these extreme environments for thousands of years have adapted to confront the unique challenges that they present.
Approximately 2% of people worldwide live permanently at high altitudes of over 2,500 meters (1.5 miles), where oxygen is sparse, UV radiation is high, and temperatures are low. Native Andeans, Tibetans, Mongolians, and Ethiopians exhibit adaptations that improve their ability to survive such conditions. Andeans, for example, display increased chest circumference, elevated oxygen saturation, and a low hypoxic ventilatory response, enabling them to thrive at exceptionally high elevations.