Category Archives: blood cells

Boosting enzyme may help improve blood flow, fitness in elderly

Herewith the latest development in our battle with Father Time. At 78-years-old, this is the kind of information that keeps me on the edge of my seat.

As people age, their blood-vessel density and blood flow decrease, which is why it’s harder to maintain muscle mass after 40 and endurance in the later decades, even with exercise. This vascular decline is also one of the major causes of age-related diseases, such as frailty or hypertension. However, little is known about the underlying cause or how to stop it.

830c88f78a26b084002c883eb628074e

Now, in a new study published this week in Cell, a team of researchers from Penn Medicine and other institutions have shown for the first time how a well-studied enzyme called SIRT1 declines in the blood vessels with age and that restoring it reverses the effects of vascular aging. After receiving a supplement called NAD+ precursor nicotinamide mononucleotide (NMN), older mice had the number of capillaries and capillary density found in much younger mice, and improved endurance by up to 80 percent. The collaborative study also involves researchers from Harvard Medical School and Massachusetts Institute of Technology.

“This study tells us that the loss of SIRT1 is a primary reason why our ability to exercise and receive its benefits diminish as we age,” said co-senior author Zoltan Pierre Arany, MD, PhD, an associate professor of Cardiovascular Medicine in the Perelman School of Medicine at the University of Pennsylvania. “We also show that when we bring the enzyme back into the blood vessels, vascular health improves dramatically: The old blood vessel tree [cluster of capillaries] in the older mice is turned into a young vessel tree, one that looks like it’s been exercising for a while, just by turning on this enzyme. That’s the most powerful aspect of the study.” Continue reading

Advertisements

Leave a comment

Filed under Blood, blood cells, blood pressure, enzymes, Exercise, exercise benefits

MCH levels in blood tests: What do they mean? – MNT

I get blood work done at least once a year and confess that I do not know what all the information they get means. Thought this piece from Medical News Today might be useful in that regard.
One of the things they check for is MCH levels.

These levels are regularly used to help diagnose blood disorders but can be difficult to understand. Different MCH levels may cause a variety of symptoms, which will require individual treatments.

cutaway-view-of-a-blood-vessel.jpg

What is MCH?

MCH stands for mean corpuscular hemoglobin.

MCH levels refer to the average amount of hemoglobin found in the red blood cells in the body. Hemoglobin is a protein in the blood that allows red blood cells to deliver oxygen to the cells and tissues in the body.

What is a CBC test?

A complete blood count test, or simply CBC test, is designed to give doctors a general overview of a person’s health. The test can help screen people for a variety of issues at once and may help diagnose conditions, such as bleeding disorders, infections, and anemia. Continue reading

2 Comments

Filed under Blood, blood cells