PMID- 16236599 OWN - NLM STAT- MEDLINE DCOM- 20051230 LR - 20071115 IS - 0953-7104 (Print) IS - 0953-7104 (Linking) VI - 16 IP - 7 DP - 2005 Nov TI - Oxidative stress in blood platelets from schizophrenic patients. PG - 386-91 AB - Oxidative stress in blood platelets is observed in various diseases, including neuropsychiatric disorders. The aim of our study was to evaluate oxidative stress in blood platelets from patients with schizophrenic disorders by measuring the activity of the platelet antioxidative enzyme, superoxide dismutase (SOD), concomitant with the level of thiobarbituric acid reactive species (TBARS). In blood platelets obtained from schizophrenic patients (with paranoid schizophrenia according to DSM-IV criteria) and from healthy volunteers the level of reactive oxygen species was also measured via chemiluminescence. In resting blood platelets from schizophrenic patients the chemiluminescence was higher than in platelets from control subjects (P < 0.05), but in thrombin-activated platelets an increase (about 53%) of chemiluminescence was observed, however this increase was lower than in thrombin-stimulated platelets from healthy subjects (101.5%). The results indicate that in platelets from schizophrenic patients generation of reactive oxygen species is enhanced. Moreover, we observed that SOD activity in blood platelets from schizophrenic patients was significantly lower than in control platelets and that a correlation exists between increased lipid peroxidation and inhibition of the activity of this antioxidative enzyme in schizophrenic platelets. FAU - Dietrich-Muszalska, A AU - Dietrich-Muszalska A AD - II Department of Psychiatry, Medical University of Lodz, Poland. tzn_lodz@post.pl FAU - Olas, B AU - Olas B FAU - Rabe-Jablonska, J AU - Rabe-Jablonska J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Platelets JT - Platelets JID - 9208117 RN - 0 (Reactive Oxygen Species) RN - 0 (Thiobarbituric Acid Reactive Substances) RN - EC 1.15.1.1 (Superoxide Dismutase) SB - IM MH - Adolescent MH - Adult MH - Blood Platelets/chemistry/*metabolism MH - Humans MH - Oxidation-Reduction MH - *Oxidative Stress MH - Reactive Oxygen Species/metabolism MH - Schizophrenia/*blood/metabolism MH - Statistics as Topic MH - Superoxide Dismutase/metabolism MH - Thiobarbituric Acid Reactive Substances/metabolism EDAT- 2005/10/21 09:00 MHDA- 2005/12/31 09:00 CRDT- 2005/10/21 09:00 PHST- 2005/10/21 09:00 [pubmed] PHST- 2005/12/31 09:00 [medline] PHST- 2005/10/21 09:00 [entrez] AID - U3QG0Q00232HK027 [pii] AID - 10.1080/09537100500128872 [doi] PST - ppublish SO - Platelets. 2005 Nov;16(7):386-91. doi: 10.1080/09537100500128872.