Laten we maar oppassen voor exorcisten!
Hier wat info over H2S:
Hydrogen sulfide is considered a broad-spectrum poison, meaning that it can poison several different systems in the body, although the nervous system is most affected. The toxicity of H2S is comparable with that of hydrogen cyanide. It forms a complex bond with iron in the mitochondrial cytochrome enzymes, thus preventing cellular respiration.
Since hydrogen sulfide occurs naturally in the body, the environment and the gut, enzymes exist in the body capable of detoxifying it by oxidation to (harmless) sulfate.[11] Hence, low levels of hydrogen sulfide may be tolerated indefinitely.
At some threshold level, believed to average around 300–350 ppm, the oxidative enzymes become overwhelmed.
Hydrogen sulfide is produced in small amounts by some cells of the mammalian body and has a number of biological signaling functions. (Only two other such gases are currently known: nitric oxide (NO) and carbon monoxide (CO).)
The gas is produced from cysteine by the enzymes cystathionine beta-synthase and cystathionine gamma-lyase. It acts as a relaxant of smooth muscle and as a vasodilator[28] and is also active in the brain, where it increases the response of the NMDA receptor and facilitates long term potentiation,[29] which is involved in the formation of memory.
Eventually the gas is converted to sulfite in the mitochondria by thiosulfate reductase, and the sulfite is further oxidized to thiosulfate and sulfate by sulfite oxidase. The sulfates are excreted in the urine.[30]
Due to its effects similar to nitric oxide (without its potential to form peroxides by interacting with superoxide),
hydrogen sulfide is now recognized as potentially protecting against cardiovascular disease.[28] The cardioprotective role effect of garlic is caused by catabolism of the polysulfide group in allicin to H2S, a reaction that could depend on reduction mediated by glutathione.[31]
Though both nitric oxide (NO) and hydrogen sulfide have been shown to relax blood vessels, their mechanisms of action are different: while NO activates the enzyme guanylyl cyclase, H2S activates ATP-sensitive potassium channels in smooth muscle cells. Researchers are not clear how the vessel-relaxing responsibilities are shared between nitric oxide and hydrogen sulfide. However there exists some evidence to suggest that nitric oxide does most of the vessel-relaxing work in large vessels and hydrogen sulfide is responsible for similar action in smaller blood vessels.[32]
Oftewel wanneer wordt iets heilzaams een 'breedspectrum' gif? Ik heb gekeken naar zwavelhoudende voedingsmiddelen als knoflook, en er zijn er toch wel erg veel waar ik niet goed op reageer.
