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Archive for February, 2008

Lab study hints Viagra may harm male fertility

Friday, February 29th, 2008

erectile dysfunction

NEW YORK (Reuters Health) - Laboratory studies conducted at Queen's University Belfast, UK suggest that taking the erectile dysfunction drug Viagra may adversely affect sperm function and possibly male fertility.

Recreational users of Viagra need to be informed of the drug's potentially harmful effects on sperm function, the investigators say.

In their experiments, Dr. David R. J. Glenn and colleagues observed that exposure of cultured sperm to Viagra, compared to no exposure, led to a “sustained enhancement of motility,” both in numbers of progressively motile sperm and their velocity.

However, exposure to Viagra — at concentrations equivalent to the average maximum total blood concentration present 30 minutes after a single oral dose of 100 milligrams — also caused a premature “acrosome reaction.” Acrosomes are structures that cover the head of the sperm and contain a variety of enzymes that help the sperm penetrate the outer membrane of the egg.

That Viagra may induce early activation of the acrosome reaction has “important clinical erectile dysfunction free sample because sperm that acrosome-react before contact with the oocyte are incapable of fertilization,” the impotence solution note in the journal Fertility and Sterility.

“Given that the majority of sperm acrosome react on exposure to (Viagra), the drug may cause significant impairment to their fertilizing potential,” they write.

This is a concern, Glenn and colleagues say, given that Viagra and other like-drugs are widely available on the Internet and are increasingly being used “recreationally” by young healthy men of cream for erectile dysfunction
age as sexual enhancers — not just by older men who have erectile dysfunction.

SOURCE: Fertility and Sterility, May 2007.

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Botox injections ease symptoms of prostate enlargement

Thursday, February 28th, 2008

erectile dysfunction


WASHINGTON (AFP) - Injections of botulinum toxin A, or Botox, into the prostate gland eased the symptoms of enlarged prostate in men for up to a year, according to the results of a small study published Wednesday.

Researchers at the Chang Gung University Medical College, Taiwan, and the University of Pittsburgh School of Medicine, Pennsylvania, based their study on 37 men with benign prostatic hyperplasia (BHP), or enlarged prostate.

All patients received a single injection of Botox into their prostate, the cure dysfunction erectile herbal said in their paper published in a summary ahead of this week's American Urological Drug for treatment of erectile dysfunction's annual conference, in Annaheim, California.

A year into the treatment 27 patients - 73 percent of the group - experienced a 30 percent herbal cure for erectile dysfunction in urinary tract symptoms and quality of life, said Dr Yao-Chi Chuang, chief investigator for the Taiwanese university.

Chuang said Botox - a popular, surgery-free cosmetic treatment for wrinkles - reduces the size of the prostate gland through a cellular process called apoptosis, in which the prostate cells die in a programmed manner.

The treatment posed no cure dysfunction erectile natural side effects, such as stress urinary erectile dysfunction home remedy or erectile dysfunction, said Pittsburgh's Michael Chancellor, senior author of the study.

The reduction in size of the prostate can improve urine flow and decrease residual urine left in the bladder, he said.

“Our results are encouraging because they indicate that Botox could represent a simple, safe and effective treatment for enlarged prostate that has long-term benefits,” Chancellor added.

BHP is one of the most common diseases affecting men as they age. More than half of all men over the age of 60 and by age 80 develop enlarged prostates, the researchers said.

Forty to 50 percent will develop symptoms of BHP, including more frequent urination, urinary tract infections, the inability to completely empty the bladder and, in severe cases, eventual damage to the bladder and kidneys, they added.

Botox is a powerful neurotoxin introduced nearly two decades ago. It is used to cure some facial problems but is best known for its cosmetic qualities in paralysing facial muscles and thus giving foreheads a wrinkle-free appearance.

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Thursday, February 28th, 2008

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