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Archive for November 4th, 2008

Why we don’t prescribe bark for cancer

My valued colleague, Dr. Antonio Baines, recently invited me to speak for his graduate course in Toxicology.  Dr. Baines’ course is one of the most highly-regarded graduate classes at North Carolina Central University for M.S. students in Biology and Pharmaceutical Sciences.  Antonio asked that I discuss the pharmacology and toxicology of herbal and non-botanical dietary supplements but pretty much gave me free reign as to the mechanism by which I would do so.

In the past, I have often introduced herbal supplements to students who already know a bit about drug and toxicant action by taking the example of the anticancer drug, taxol (Note: Little “t” taxol was the name originally given to this chemical by its co-discovers but the corporate sponsor used it as a registered trademark for the brand name, big “t” Taxol, and the USAN proposed the use of the cumbersome paclitaxel as the generic name.).  As I noted in my previous post, taxol is an anticancer drug isolated from the bark of the Pacific yew tree, Taxus brevifolia, and was the first compound shown to kill cancer cells by promoting microtubule polymerization (and preventing depolymerization).

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Posted in: Herbs & Supplements, Science and Medicine

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Circumcision: What Does Science Say?

Some people think circumcision is mutilation; others want one even if they don’t know what it is. When I was working in an Air Force hospital emergency room one night, a young airman came in requesting a circumcision. I asked him why he wanted one. He said a couple of his friends had had it done, and he’d heard it was a good idea, and he was going to be getting out of the Air Force pretty soon and wanted to have it done while Uncle Sam would still foot the bill. I examined him: he had a neatly circumcised penis without so much as a hint of any foreskin remnant. I’ve always wondered what he thought we were going to cut off.

The subject of circumcision evokes strong emotions. Some people think of neonatal circumcision as a religious duty or a valuable preventive health measure; others think it is the epitome of child abuse. I have no strong feelings either way. I’m not sure what I would have decided if I’d had sons; fortunately my children were both daughters so I didn’t have to decide. I’m going to try to stand back and look at the scientific evidence objectively. What are the medical benefits and risks of circumcision? (more…)

Posted in: Medical Ethics, Surgical Procedures

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