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12

"Bad egg" gas controls blood flow

sea-maid submitted, created time 2 months 2 weeks (www.nature.com)

As the smell of rotten eggs wafts past your nostrils, you're more likely to be revulsed than relaxed. Yet researchers have now shown that the "bad egg" gas, hydrogen sulfide, is produced in certain animal cells and acts as a muscle relaxant to regulate blood pressure.

9

Rotten Remedy

Sue Wu submitted, created time 9 months 4 weeks (www.sciencenews.org)

Hydrogen sulfide deserves its bad reputation. It's famous for filling the air of high school chemistry labs with the smell of rotten eggs. One strong whiff of the noxious gas can knock you to the ground. Too much can kill you. However, recent discoveries show that in the right proportions, H2S helps regulate several different bodily functions. In fact, we can't live without it.

5

Hydrogen sulfide mediates the vasoactivity of garlic

william submitted, created time 1 year 2 months (www.pnas.org)

The consumption of garlic is inversely correlated with the progression of cardiovascular disease, although the responsible mechanisms remain unclear. Here we show that human RBCs convert garlic-derived organic polysulfides into hydrogen sulfide (H2S), an endogenous cardioprotective vascular cell signaling molecule.

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