نتایج جستجو برای: اکسیداسیون h2s

تعداد نتایج: 7365  

2014
Sanjog S. Nagarkar Tanmoy Saha Aamod V. Desai Pinaki Talukdar Sujit K. Ghosh

Hydrogen sulphide (H2S) is known to play a vital role in human physiology and pathology which stimulated interest in understanding complex behaviour of H2S. Discerning the pathways of H2S production and its mode of action is still a challenge owing to its volatile and reactive nature. Herein we report azide functionalized metal-organic framework (MOF) as a selective turn-on fluorescent probe fo...

2016
Huan-Di Liu Ai-Jie Zhang Jing-Jing Xu Ying Chen Yi-Chun Zhu

BACKGROUND Our previous pilot studies aimed to examine the role of hydrogen sulfide (H2S) in the generation of endothelial progenitor cells led to an unexpected result, i.e., H2S promoted the differentiation of certain hematopoietic stem/progenitor cells in the bone marrow. This gave rise to an idea that H2S might promote hematopoiesis. METHODS To test this idea, a mice model of myelosuppress...

Journal: :Neurotoxicology and teratology 2014
Bruce R Reed Julian Crane Nick Garrett David L Woods Michael N Bates

BACKGROUND Exposures to hydrogen sulfide gas (H2S) have been inconclusively linked to a variety of negative cognitive outcomes. We investigated possible effects on cognitive function in an urban population with chronic, low-level exposure to H2S. METHODS Participants were 1637 adults, aged 18-65 years from Rotorua city, New Zealand, exposed to ambient H2S from geothermal sources. Exposures at...

2013
Pauline M. Snijder Rudolf A. de Boer Eelke M. Bos Joost C. van den Born Willem-Peter T. Ruifrok Inge Vreeswijk-Baudoin Marcory C. R. F. van Dijk Jan-Luuk Hillebrands Henri G. D. Leuvenink Harry van Goor

BACKGROUND Ischemia-reperfusion injury (IRI) is a major cause of cardiac damage following various pathological processes. Gaseous hydrogen sulfide (H2S) is protective during IRI by inducing a hypometabolic state in mice which is associated with anti-apoptotic, anti-inflammatory and antioxidant properties. We investigated whether gaseous H2S administration is protective in cardiac IRI and whethe...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2008
Kenneth R Olson Michael J Healy Zhaohong Qin Nini Skovgaard Branka Vulesevic Douglas W Duff Nathan L Whitfield Guangdong Yang Rui Wang Steve F Perry

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...

2014
Yan-Jun Li Jian Chen Ming Xian Li-Gang Zhou Fengxiang X. Han Li-Jun Gan Zhi-Qi Shi

Hydrogen sulfide (H2S) is an important gasotransmitter in mammals. Despite physiological changes induced by exogenous H2S donor NaHS to plants, whether and how H2S works as a true cellular signal in plants need to be examined. A self-developed specific fluorescent probe (WSP-1) was applied to track endogenous H2S in tomato (Solanum lycopersicum) roots in site. Bioimaging combined with pharmacol...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2013
Kenneth R Olson Eric R Deleon Yan Gao Kevin Hurley Victor Sadauskas Catherine Batz Gilbrian F Stoy

H2S derived from organic thiol metabolism has been proposed serve as an oxygen sensor in a variety of systems because of its susceptibility to oxidation and its ability to mimic hypoxic responses in numerous oxygen-sensing tissues. Thiosulfate, an intermediate in oxidative H2S metabolism can alternatively be reduced and regenerate H2S. We propose that this contributes to the H2S-mediated oxygen...

2016
Na Li Ming-Jie Wang Sheng Jin Ya-Dan Bai Cui-Lan Hou Fen-Fen Ma Xing-Hui Li Yi-Chun Zhu

Aims. To examine the expression patterns of hydrogen sulphide- (H2S-) producing enzymes in ischaemic heart tissue and plasma levels of H2S after 2 weeks of NaHS treatment after myocardial infarction (MI) and to clarify the role of endogenous H2S in the MI process. Results. After MI surgery, 2 weeks of treatment with the H2S donor NaHS alleviated ischaemic injury. Meanwhile, in ischemia myocardi...

Journal: :Chemosphere 2000
Y C Chung C Huang C P Tseng J R Pan

Gas mixture of H2S and NH3 in this study has been the focus in the research area concerning gases generated from the animal husbandry and the anaerobic wastewater lagoons used for their treatment. A specific microflora (mixture of Thiobacillus thioparus CH11 for H2S and Nitrosomonas europaea for NH3) was immobilized with Ca-alginate and packed inside a glass column to decompose H2S and NH3. The...

Journal: :Pharmacological reviews 2017
Csaba Szabo Andreas Papapetropoulos

Over the last decade, hydrogen sulfide (H2S) has emerged as an important endogenous gasotransmitter in mammalian cells and tissues. Similar to the previously characterized gasotransmitters nitric oxide and carbon monoxide, H2S is produced by various enzymatic reactions and regulates a host of physiologic and pathophysiological processes in various cells and tissues. H2S levels are decreased in ...

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