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001-es BibID:BIBFORM062161
Első szerző:Nagy Péter
Cím:Chemical aspects of hydrogen sulfide measurements in physiological samples / Péter Nagy, Zoltán Pálinkás, Attila Nagy, Barna Budai, Imre Tóth, Anita Vasas
Megjegyzések:Background: Owing to recent discoveries of many hydrogen sulfide-mediated physiological processes, sulfide biology is in the focus of scientific research. However, the promiscuous chemical properties of sulfide pose complications for biological studies, which led to accumulation of controversial observations in the literature. Scope of review: We intend to provide an overview of fundamental thermodynamic and kinetic features of sulfide redox- and coordination-chemical reactions and protonation equilibria in relation to its biological functions. In light of these chemical properties we review the strengths and limitations of the most commonly used sulfide detection methods and recently developed fluorescent probes. We also give a personal perspective on blood and tissue sulfide measurements based on proposed biomolecule-sulfide interactions and point out important chemical aspects of handling sulfide reagent solutions. Major conclusions: The diverse chemistries of sulfide detection methods resulted in orders of magnitude differences in measured physiological sulfide levels. Investigations that were aimed to dissect the underlying molecular reasons responsible for these controversies made the important recognition that there are large sulfide reserves in biological systems. These sulfide pools are tightly regulated in a dynamic manner and they are likely to play a major role inregulation of endogenous-sulfide-mediated biological functions and avoiding toxic side effects. General significance: Working with sulfide is challenging, because it requires considerable amounts of chemical knowledge to adequately handle reagent sulfide solutions and interpret biological observations. Therefore, we propose that a rigorous chemical approach could aid the reconciliation of the increasing number of controversies in sulfide biology. This article is part of a Special Issue entitled Current methods to study reactive oxygen species -pros and cons and biophysics of membrane proteins.
Tárgyszavak:Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Hydrogen sulfide
Protonation equilibria
Redox chemistry
Coordination chemistry
Blood sulfide pool
Tissue sulfide measurement
Megjelenés:Biochimica et Biophysica Acta (BBA). General Subjects. - 1840 : 2 (2014), p. 876-891. -
További szerzők:Pálinkás Zoltán (1984-) (vegyész) Nagy Attila Budai Barna Tóth Imre (1950-) (vegyész) Vasas Anita (1987-) (környezetkutató)
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