Inflammation Theory: Now More Credible Than Ever

A new study shows that my Inflammation Theory is more credible than ever now.

DeLano and his collaborator, Geert Schmid-Schonbein, a professor of bioengineering at UCSD, have been working with a widely used laboratory model of disease, a rat bred to have high blood pressure.

They have found that proteases, whose function is to clear away molecular debris, can go awry and split apart a number of different cell wall receptors. If insulin receptors are damaged, normal metabolism of glucose is not possible, and diabetes can be the result. Proteases can also damage receptors that are vital for the functioning of infection-fighting leukocytes.

And there's more...

The researchers also found that protein receptors on the surface of cells are clipped off as the rats develop high blood pressure. "Many receptors in blood vessels cause them to relax," DeLano said. "Many proteases we see in the animals cleave receptors responsible for relaxation." Giving the rats doxycycline, an antibiotic that is also a protease inhibitor, brought down their blood pressure and restored normal immune system function.

What does this all mean?

"This is really an important observation," said H. Glenn Bohlen, a professor of cellular and integrative physiology at Indiana University Medical School, who wrote an accompanying editorial. "It ties in information that high blood pressure and insulin resistance have the same cause, damage to receptors."

And the real kicker:

The newly reported studies might also help explain why antioxidants such as vitamins C and E help against inflammation, he said.

"The next approach probably would be to treat an inflammatory state," Bohlen said. "There is something going on that we can interact with. There are many commercially available methods for blocking proteases."

In addition to antibiotics such as doxycycline, drugs such as ACE inhibitors are protease inhibitors, DeLano said. Protease inhibitors are also used to control HIV, the virus that causes AIDS.

(Emphasis mine.)

Let's home this memo makes it to our doctors.