Aim:The aim of the present study was to investigate the differences in the antioxidant-oxidant balance (AO-OB) between schizophrenic patients and healthy individuals and to explore the relationship of AO-OB with illness subtypes and symptom profiles.Methods: After a 15-day drug-free period, schizophrenia patients (n = 50) in a clinical sample, and age-and sex-matched healthy subjects (n = 49) were enrolled. Total antioxidant potentials (TAOP) and total peroxide levels (TPEROX) of all participants were measured and the oxidative stress index (OSI) was calculated. The assessment included structured measurements, including the Positive and Negative Syndrome Scale (PANSS), and the Brief Psychiatric Rating Scale (BPRS).Results: TAOP had a significant positive correlation with age at onset of schizophrenia (P = 0.013), a negative correlation with the PANSS negative subscale scores (P = 0.008), a negative correlation with the PANSS total scores (P < 0.001), and a significant negative correlation with BPRS scores (P = 0.001). OSI had a significant negative correlation with age at onset (P = 0.046) and a significant positive correlation with PANSS negative subscale (P = 0.015). A multiple regression model indicated a significant linear combination of age, gender, duration of illness, subtype of schizophrenia, and PANSS scores, in which only the subtype of schizophrenia made a statistically significant contribution to predicting mean OSI (F[5,35] = 2.44, P = 0.04). Conclusion: Several parameters in the pathogenesisof schizophrenia, such as age of onset, level of negative symptoms, and subtype of illness, but not the presence of the illness itself, are associated with the level of oxidative stress.

ObjectiveWe investigated the relationship between serum bilirubin levels and metabolic syndrome (MetS), and the longitudinal effects of baseline serum bilirubin concentrations on MetS in patients with schizophrenia spectrum disorders undergoing atypical antipsychotics.MethodsThe sample of this study consisted of 131 patients with schizophrenia spectrum disorders. Waist circumference, blood pressure, and levels of triglycerides, high-density lipoprotein cholesterol, fasting glucose, and insulin were evaluated at baseline and at month six. Serum bilirubin levels were measured at baseline. Serum bilirubin levels of the patients with and without MetS criteria were compared. We also compared patients with high and low bilirubin levels (upper and lower 50th percentiles of serum bilirubin levels) in terms of MetS criteria, MetS frequency, and course of MetS.ResultsSerum direct bilirubin levels were more consistently related to MetS and MetS-related variables. The waist circumference and triglyceride criteria for MetS were significantly related to low serum direct bilirubin at baseline; waist circumference and fasting glucose criteria, and insulin resistance were associated with low serum direct bilirubin at follow-up. MetS diagnosis and the presence of the waist circumference criterion were more frequent at the baseline and the follow-up in low bilirubin group. At the end of the follow-up period, the rate of reverse MetS was significantly higher in the high bilirubin group.ConclusionOur results have suggested that serum direct bilirubin levels showed a more reliable and stable relationship with abdominal obesity for MetS components.in patients with schizophrenia spectrum disorders using antipsychotics. Further studies are required.

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Bağımlılık gelişiminde genetik, psikososyal ve çevresel faktörlerin rol oynadığı birincil, kronik nörobiyolojik bir hastalıktır. Bağımlılık psikofarmakolojisindeki gelişmeler psikiyatrinin diğer alanlarına göre daha yavaş bir seyir göstermiştir. Alkol ve madde bağımlılığı tedavisi uzun süre sadece sosyal ve davranışsal yaklaşımlar ile sürdürülmüştür. Yirminci yüzyılın sonuna kadar madde bağımlılığı tedavisinde onay almış tek ajan disülfiram olmuştur. Bağımlılığın oluşumu ve sürmesini sağlayan nörobiyolojik süreçlerin daha iyi anlaşılmaya başlanmasına paralel olarak farmakolojik tedavi seçeneklerinin sayısı da artmaya başlamıştır. Son yıllarda alkol ve opiyat bağımlılığı tedavisinde naltrekson, akamprosat, metadon ve buprenorfin gibi çeşitli ilaçların kullanımına izin verilmiştir. Nörotransmitter ve reseptör düzeyinde artan bilgiler ışığında, özellikle istek ve nükslerin önlenmesi konusunda halen pek çok çalışma yapılmakta, farklı bağımlılık tiplerinde kullanılmak üzere birçok farmakolojik ajanın geliştirme çabaları ve tedavi arayışları devam etmektedir. Bu yazıda alkol ve madde bağımlılığı psikofarmakolojisinde mevcut tedavi seçenekleri ve geliştirme aşamasında olan ilaçlar kısaca gözden geçirilmiştir.

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