PMID- 10708546 OWN - NLM STAT- MEDLINE DCOM- 20000419 LR - 20131121 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 269 IP - 2 DP - 2000 Mar 16 TI - Novel priming compounds of cystathionine metabolites on superoxide generation in human neutrophils. PG - 297-301 AB - Human peripheral blood polymorphonuclear leukocytes were preincubated with cystathionine and cystathionine metabolites found in the urine of patients with cystathioninuria. Among the cystathionine metabolites, cystathionine ketimine and N-acetyl-S-(3-oxo-3-carboxy-n-propyl) cysteine (NAc-OCPC) significantly enhanced the N-formylmethionylleucylphenylalanine (fMLP)-induced superoxide generation, but cystathionine, NAc-cystathionine, and cyclothionine did not enhance the superoxide generation. Cystathionine ketimine and NAc-OCPC also enhanced superoxide generation induced by opsonized zymosan (OZ) but not that induced by arachidonic acid (AA) and phorbol 12-myristate 13-acetate (PMA). Superoxide generation induced by cystathionine ketimine and NAc-OCPC was inhibited by genistein, an inhibitor of tyrosine kinase, and was enhanced by 1-(5-isoquinoline sulfonyl)-2-methylpiperazine (H-7), an inhibitor of protein kinase C. Cystathionine ketimine and NAc-OCPC markedly also increased phosphorylation of 45-kDa protein in human neutrophils and the phosphorylation depended on the concentrations of cystathionine ketimine and NAc-OCPC. The phosphorylation of 45-kDa protein induced by cystathionine ketimine and NAc-OCPC was inhibited by genistein and herbimycin A, inhibitors of tyrosine kinase, but was not inhibited by H-7 and staurosporine, inhibitors of protein kinase C. Cystathionine metabolites and l-cystathionine sulfoxides were separated into two diastereoisomers, CS-I and CS-II. CS-I enhanced the superoxide generation induced by AA and PMA but not that induced by fMLP and OZ. In contrast, CS-II enhanced the superoxide generation induced by fMLP and OZ, but not that induced by AA and PMA. CI - Copyright 2000 Academic Press. FAU - Kodama, H AU - Kodama H AD - Department of Chemistry, Kochi Medical School, Oko-cho, Nankoku-shi, Kochi, 783-8505, Japan. FAU - Zhang, J AU - Zhang J FAU - Sugahara, K AU - Sugahara K LA - eng PT - Journal Article PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Amino Acids) RN - 0 (Carboxylic Acids) RN - 0 (N-acetyl-S-(3-oxo-3-carboxy-n-propyl)cysteine) RN - 11062-77-4 (Superoxides) RN - 375YFJ481O (Cystathionine) RN - 42HK56048U (Tyrosine) RN - 54927-81-0 (cystathionine sulfoxide) RN - 87254-95-3 (cystathionine ketimine) SB - IM MH - Amino Acids/pharmacology MH - Carboxylic Acids/pharmacology MH - Cystathionine/analogs & derivatives/*metabolism/pharmacology MH - Humans MH - Neutrophils/*drug effects/metabolism MH - Phosphorylation MH - Stereoisomerism MH - Superoxides/*metabolism MH - Tyrosine/metabolism EDAT- 2000/03/10 09:00 MHDA- 2000/04/25 09:00 CRDT- 2000/03/10 09:00 PHST- 2000/03/10 09:00 [pubmed] PHST- 2000/04/25 09:00 [medline] PHST- 2000/03/10 09:00 [entrez] AID - S0006-291X(99)91970-8 [pii] AID - 10.1006/bbrc.1999.1970 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2000 Mar 16;269(2):297-301. doi: 10.1006/bbrc.1999.1970.