PMID- 28356859 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220310 IS - 1452-8258 (Print) IS - 1452-8266 (Electronic) IS - 1452-8266 (Linking) VI - 35 IP - 1 DP - 2016 Jan TI - Diagnostic Accuracy of Brain-derived Neurotrophic Factor and Nitric Oxide in Patients with Schizophrenia: A pilot study. PG - 7-16 LID - 10.1515/jomb-2015-0010 [doi] AB - BACKGROUND: Brain-derived neurotrophic factor (BDNF) and nitric oxide (NO) play multiple roles in the developing and adult CNS. Since BDNF and NO metabolisms are dysregulated in schizophrenia, we measured these markers simultaneously in the blood of schizophrenics and assessed their diagnostic accuracy. METHODS: Thirty-eight patients with schizophrenia classified according to demographic characteristics, symptomatologyand therapy and 39 age- and gender-matched healthy controls were enrolled. BDNF was determined by the ELISA technique while the concentration of nitrite/nitrate ([Formula: see text]) was measured by the colorimetric method. RESULTS: Serum BDNF levels were significantly lower (20.38+/-3.73 ng/mL, P = 1.339E-05), whilst plasma [Formula: see text] concentrations were significantly higher (84.3 (72-121) mumol/L, P=4.357E-08) in patients with schizophrenia than in healthy controls (25.65+/-4.32 ng/mL; 60.9 (50-76) mumol/L, respectively). The lowest value of BDNF (18.14+/-3.26 ng/mL) and the highest [Formula: see text] concentration (115.3 (80-138) mumol/L) were found in patients treated with second-generation antipsychotics (SGA). The patients diseased before the age of 24 and the patients suffering for up to one year had significantly lower serum BDNF levels than those diseased after the age of 24 and the patients who were ill longer than one year. Both BDNF and [Formula: see text] showed good diagnostic accuracy, but BDNF had better ROC curve characteristics, especially in patients with negative symptomatology. CONCLUSIONS: BDNF and nitrite/nitrate showed inverse changes in schizophrenic patients. The most pronounced changes were found in patients treated with second-generation antipsychotics. Although BDNF is not specific of schizophrenia, it may be a clinically useful biomarker for the diagnosis of patients expressing predominantly negative symptoms. FAU - Djordjevic, Vladimir V AU - Djordjevic VV AD - Clinic for Mental Health Protection, Clinical Centre Nis, Serbia. FAU - Lazarevic, Dusan AU - Lazarevic D AD - Clinic for Psychiatry, Clinical Centre Nis, Serbia. FAU - Cosic, Vladan AU - Cosic V AD - Centre for Medical Biochemistry, Clinical Centre Nis, Serbia. FAU - Knezevic, Marinela Z AU - Knezevic MZ AD - Department of Neuroscience, University of Kragujevac, Serbia. FAU - Djordjevic, Vidosava B AU - Djordjevic VB AD - Institute of Biochemistry, Faculty of Medicine, Nis, Serbia. FAU - Stojanovic, Ivana AU - Stojanovic I AD - Institute of Biochemistry, Faculty of Medicine, Nis, Serbia. LA - eng PT - Journal Article DEP - 20151230 PL - Serbia TA - J Med Biochem JT - Journal of medical biochemistry JID - 101315490 PMC - PMC5346796 OTO - NOTNLM OT - ROC curve OT - brain-derived neurotrophic factor OT - nitric oxide OT - schizophrenia COIS- The authors stated that they have no conflicts of interest regarding the publication of this article. EDAT- 2016/01/01 00:00 MHDA- 2016/01/01 00:01 PMCR- 2016/01/01 CRDT- 2017/03/31 06:00 PHST- 2015/01/05 00:00 [received] PHST- 2015/06/16 00:00 [accepted] PHST- 2017/03/31 06:00 [entrez] PHST- 2016/01/01 00:00 [pubmed] PHST- 2016/01/01 00:01 [medline] PHST- 2016/01/01 00:00 [pmc-release] AID - jomb-2015-0010 [pii] AID - 10.1515/jomb-2015-0010 [doi] PST - ppublish SO - J Med Biochem. 2016 Jan;35(1):7-16. doi: 10.1515/jomb-2015-0010. Epub 2015 Dec 30.