Female muscle is superior!

Hay guys,

Well, at regeneration, in mice, anyway:

http://www.ncbi.nlm.nih.gov/sites/en...earch=17420291

"We found that the female [muscle-derived stem cells] (F-MDSCs)
regenerated skeletal muscle more efficiently. Despite using additional
isolation techniques and cell cloning, we could not obtain a male
subfraction with a regeneration capacity similar to that of their female
counterparts. Rather than being directly hormonal or caused by host immune
response, this difference in MDSCs' regeneration potential may arise from
innate sex-related differences in the cells' stress responses."

tom

--
Buy the kind of capitalism Trotsky would have!

On Oct 1, 8:59 am, Tom Anderson <t...@urchin.earth.li> wrote:
> Hay guys,
>
> Well, at regeneration, in mice, anyway:
>
> http://www.ncbi.nlm.nih.gov/sites/en...ShowDetailView...
>
> "We found that the female [muscle-derived stem cells] (F-MDSCs)
> regenerated skeletal muscle more efficiently. Despite using additional
> isolation techniques and cell cloning, we could not obtain a male
> subfraction with a regeneration capacity similar to that of their female
> counterparts. Rather than being directly hormonal or caused by host immune
> response, this difference in MDSCs' regeneration potential may arise from
> innate sex-related differences in the cells' stress responses."
>
> tom
>
> --
> Buy the kind of capitalism Trotsky would have!



Eh?

I thought muscle was muscle -- it's the hormones that control how much
they develop and so forth.

Ah, I always said I was born five hundred years too early. Seems so
silly that our bodies should break down.

http://well.blogs.nytimes.com/2007/1...de3&ei=5087%0A

EXCERPTS

In the animal world, females often don't live much past their
reproductive years. But in our world, women live into their 80s and
beyond - a fact that may be explained, in part, by evolutionary
forces.

....

Researchers have even measured the muscle strength of men and women in
these communities and weighed the baskets and bundles carted around by
them. Often, the scientists find, women in their 60s are as strong as
women in their 20s. "It's the women over 40 who are carrying the heavy
loads,'' said Dr. Hawkes.