Autori: Rinaldi L ,a, Gobbi G ,a, Pambianco M ,b, Micheloni C ,a, Mirandola P ,a, Vitale M ,a,c.
Titolo: Hydrogen sulfide prevents apoptosis of human PMN via inhibition of p38 and caspase 3
Descrizione: Hydrogen sulfide, together with carbon monoxide and nitric oxide, is now considered a gasotransmitter able to induce specific cellular responses. As hydrogen sulfide is a component of several natural compounds known to be effective in many inflammatory pathologies, particularly of the respiratory tract, we studied its effects in vitro on the survival and bactericidal activity of purified human neutrophils. We found that (1) HS_ ions promote the survival of granulocytes, but not that of lymphocytes or eosinophils, cultured in serum-free medium; (2) the pro-survival effect of HS_ is due to inhibition of caspase-3 cleavage and p38 MAP kinase phosphorylation; (3) the bactericidal activity of neutrophils is not impaired by hydrogen sulfide. We conclude that HS_ promotes the short-term survival of neutrophils potentially accelerating the resolution of inflammatory processes and preventing the occurrence of new ones.
Istituto promotore: a – Department of Anatomy, Pharmacology & Forensic Medicine, Human Anatomy Section, University of Parma, Ospedale Maggiore, Parma, Italy. b -Terme di Sirmione, Cell Biology Laboratory, Terme di Sirmione, Brescia, Italy and c – ITOI-CNR, Bologna Unit, c/o Research Institute ‘Codivilla-Putti’, IOR, Bologna, Italy.
Rivista: Laboratory Investigation (2006) 86, 391-397 © 2006 USCAP,Inc All rights reserved 0023-6837/06
Sezione: farmacologia – ricerca tratta dal sito Fondazione Forst
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