A study offers a new explanation for how exercise strengthens bones and the immune system.
Mar 2, 2021
ABOVE: Deep imaging of bone marrow in a mouse femur showing that osteolectin-expressing cells (red) are around arterioles (white) but not sinusoids (green), a different type of blood vessel in the bone marrow.
CHILDREN’S MEDICAL CENTER RESEARCH INSTITUTE AT UT SOUTHWESTERN
Mechanical forces from running and walking that are transmitted along blood vessels in marrow induce the growth of new bone and immune cells in mice, scientists reported in
Nature on February 24. The study is the first to demonstrate that mechanical forces can influence cellular growth and differentiation in the bone marrow, according to the authors, and provides a possible new explanation for how exercise strengthens bones and the immune system.
CDC watching covid-19 variant in New York
Josh Wingrove and Jordan Fabian, Bloomberg
March 1, 2021
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A new Covid-19 variant detected in New York City that s now traveled through various city neighborhoods is being watched closely by U.S. health officials, Anthony Fauci said on Monday.
The variant, known scientifically as B.1.526, likely started off in the Washington Heights section of Manhattan, Fauci, a top adviser to President Joe Biden on the pandemic, said during a news briefing. It is one of five concerning variants now being tracked nationally by health officials.
Recent research suggests B.1.526 needs to be closely watched for its ability to evade both monoclonal antibody and, to a certain extent, the vaccine-induced antibody, said Fauci, who also heads the National Institute of Allergy and Infectious Diseases.
Coronavirus Disease Weekly News 28February 2021
The news posted last week for the coronavirus 2019-nCoV (aka SARS-CoV-2), which produces COVID-19 disease, has been surveyed and some important articles are summarized here. The articles are more or less organized with general virus news and anecdotes first, then stories from around the US, followed by an increased number of items from other countries around the globe. Economic news related to COVID-19 is found here.
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Summary:
It appears that new Covid cases and Covid deaths have stopped going down in the US; I say appears because it s possible that the apparent uptick early this week might have been due to underreporting of cases last week, when there were widespread power outages in Texas and other states in the wake of an unprecedented cold wave. For the 7 days ending Saturday, reported new cases were only down 0.3% from the prior week
Kizzmekia Kizzy Shanta Corbett: Helped develop COVID vaccine
The Monroe News
Who is Kizzmekia Kizzy Shanta Corbett?
Kizzmekia Kizzy Shanta Corbett is a viral immunologist at the Vaccine Research Center (VRC) at the National Institute of Allergy and Infectious Diseases, National Institutes of Health (NIAID NIH) based in Bethesda, Maryland.
Appointed to the VRC in 2014, she is currently the scientific lead of the VRC s Coronavirus Team, with research efforts aimed at propelling novel coronavirus vaccines, including a COVID-19 vaccine.
In December 2020, the Institute s Director Anthony Fauci, said: Kizzy is an African American scientist who is right at the forefront of the development of the vaccine.