HS- Toxic But It Can Save a Life

H2S is a fatal poison odorant gas smelt like a moldy egg, but it has important physical function in humane bodies that will midwifery new methods against many diseases such like heart attack, proved by researches. White Day Gift Ideas for Mother A few centuries ago, the scientists have known the damage caused by the hydrogen sulfide. Now the air is the chief factor to cause the occupational disease.Seize the Time!! Editor-in-Chief all Have a Crush on Sexy Chemise

People's nose can sense the hydrogen sulfide with concentration of 0.0047ppm, when concentration rises to 500ppm, our breathing will get suppression. If the concentration amounts to 800ppm, people will die in 5 minutes. But, ironically, human 's life can not be separated from hydrogen sulfide. So why human need to rely on stink gas? Let's go back to 250 million years to find the answer. On that time, the Permian era was near over and a most serious disaster of species extinction had appeared, and the prospect of our earth is worried.Fashion News: sexy adult costumes are the Leader for May

A mainstream theory thinks that this catastrophe caused by the eruption of Siberian Voleanic, the carbon dioxide released from this process caused a series of environment changes, the oxygen content of the ocean down to a dangerous level, the life of the earth gradually slid into the abyss of the death. For aerobic marine life, the chemical composition of sea water changes above mentioned is bad news, but in this environment, Anaerobic like green sulfur bacteria is quickly flourished. The anaerobe will deliver the hydrogen sulfide after sanding the strength and will change the sea environment, which will be bad for the creatures that need oxygen. The extinction theory believes that it is this the gas that spread into the air from the ocean, threaten the survival of plants and animals in the land . When Permian era was ended, 95% of marine life and 70% of the terrestrial creatures had already been extinct. Hydrogen sulfide's important role in human physiological processes may be inherited from 2.5 million years ago, because only the species which be able to tolerate, even make use of hydrogen sulfide in some cases may survive in this catastrophe.

The blood vessel of human and rat can produce the hydrogen sulfide by testing and what functions do they have? In fact, the hydrogen sulfide is not only the poisonous air in the human body. In 1980s, scientists have found some evidence that the human body could produce a low concentrations of nitric oxide (NO) as a signal to affect cell behaviour. American pharmacologist found that nitric oxide can expand blood vessels, regulate the immune system, transmit neural singals and other functions in the research, another gas carbon monoxide(CO) which is colourless, odorless, known as the "slient killer" also has similar physiology.

Finished the work and went back home, I smelled the guety stink suffused in the room. This stink brought me to the front of the glass windows in my home. On the Surface placed the family collection of articles, including the Easter eggs drawn by the eldest daughter in campus activities. I found one egg broken; the unpleasant smell came from the broken egg. Since then, I began to wonder whether human organs and tissues can be manufactured hydrogen sulfide with a rotten-egg smell. My study of nitric oxide and carbon monoxide focuses on their effects on the cardiovascular system. I made a decision that my research on hydrogen sulfide started from here. Facts have proved that my decision was right: a series of experiments showed that hydrogen sulfide has important biological activity. A primary research has proved that CSE enzyme producing H2S existed in smooth muscle cells. These cells were also able to synthesize this enzyme indicated by researches on endothelial cells of small rat, cow and human body. And the volume of the synthesis was even more than smooth muscle cells.

05:57 - 2010-Aug-13 - post comment