Thursday, July 14, 2005

Could Makeup Shorten Your Life?

On the heels of research linking the common chemical compound phthalate to reproductive abnormalities in humans, an Indiana State University study has found a connection between the same chemical and lupus in mice.

Recent research at the University of Rochester School of Medicine and Dentistry found smaller genitals in the male babies of pregnant women who used beauty products containing phthalates.

Now researchers at Indiana State who injected mice with phthalates, a compound present in a variety of plastics and beauty products, found the injections triggered lupus and caused development of glomerulonephritis. The injection also considerably shortened the lifespan of mice that have a genetic disposition to the disease.

“Our findings clearly show that lupus can be caused by an environmental factor like phthalate, which is present in toys, in many other plastic products, including PVC pipes and medical devices, and in beauty products,” said Swapan K. Ghosh, professor and interim chair of life sciences.

In lupus, the immune system attacks its own body’s tissues as though they are foreign substances. The disease can lead to problems with kidneys, the heart, lungs or blood cells.

“Lupus type auto-immunity is five times more common in women than in men,” said So-Yon Lim, who worked with Ghosh on the study. “Is that because women use a lot more cosmetics and perfumes than men?”

While studies of the lupus-associated anti-DNA antibody have been limited to mice, there are indications humans could also be susceptible, Ghosh said.

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