Hydrogen Sulfide as an Oxygen Sensor
نویسندگان
چکیده
منابع مشابه
Hydrogen sulfide as an oxygen sensor in trout gill chemoreceptors.
O2 chemoreceptors elicit cardiorespiratory reflexes in all vertebrates, but consensus on O2-sensing signal transduction mechanism(s) is lacking. We recently proposed that hydrogen sulfide (H2S) metabolism is involved in O2 sensing in vascular smooth muscle. Here, we examined the possibility that H2S is an O2 sensor in trout chemoreceptors where the first pair of gills is a primary site of aquat...
متن کاملHydrogen Sulfide as an Oxygen Sensor 2 Kenneth
Eukaryotic cells depend upon oxygen (O2) for their survival and elaborate mechanisms have evolved in multicellular animals, especially vertebrates, to monitor the availability of environmental O2, the efficiency of O2 extraction from the environment, ensure adequate O2 delivery to tissues and even to regulate cellular metabolism when O2 availability is compromised. In vertebrates, specialized O...
متن کاملHydrogen sulfide as an oxygen sensor/transducer in vertebrate hypoxic vasoconstriction and hypoxic vasodilation.
How vertebrate blood vessels sense acute hypoxia and respond either by constricting (hypoxic vasoconstriction) or dilating (hypoxic vasodilation) has not been resolved. In the present study we compared the mechanical and electrical responses of select blood vessels to hypoxia and H2S, measured vascular H2S production, and evaluated the effects of inhibitors of H2S synthesis and addition of the ...
متن کاملHydrogen sulfide (H₂S) and hypoxia inhibit salmonid gastrointestinal motility: evidence for H₂S as an oxygen sensor.
Hydrogen sulfide (H(2)S) has been shown to affect gastrointestinal (GI) motility and signaling in mammals and O(2)-dependent H(2)S metabolism has been proposed to serve as an O(2) 'sensor' that couples hypoxic stimuli to effector responses in a variety of other O(2)-sensing tissues. The low P(O2) values and high H(2)S concentrations routinely encountered in the GI tract suggest that H(2)S might...
متن کاملThe possible role of hydrogen sulfide as an endogenous neuromodulator.
Hydrogen sulfide (H2S), which is well known as a toxic gas, is produced endogenously from L-cysteine in mammalian tissues. H2S is present at relatively high levels in the brain, suggesting that it has a physiological function. Two other gases, nitric oxide and carbon monoxide, are also endogenously produced and have been proposed as neuronal messengers in the brain. In this work we show the fol...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Antioxidants & Redox Signaling
سال: 2015
ISSN: 1523-0864,1557-7716
DOI: 10.1089/ars.2014.5930