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    Neuroprotective effect of ziprasidone: Preliminary results compared to haloperidol
    (Ondokuz Mayis Universitesi, 2014) Çinar N.; Karao?lan A.; Midi A.; Çal M.A.; Kelten B.; Çakmak M.A.; Şahin S.
    Typical and atypical antipsychotic drugs are widely used to treat psychosis. The present study investigated whether ziprasidone, an atypical antipsychotic drug, has a neuroprotective effect on hippocampal neurons in rats with experimentallyinduced transient cerebral ischemia comparatively with haloperidol which is a typical antipsychotic. Transient cerebral ischemia was induced by 10-minute occlusion of bilateral carotis communis arteries. The rats were divided into four groups: Shamoperated control group (Group I), ischemia control group (Group II), haloperidol-treated group (Group III) and ziprasidone-treated group (Group IV). Following 10-minute ischemia, Group III received 1mg/kg haloperidol intramuscularly and Group IV received 2.5 mg/kg ziprasidone intraperitoneally. The animals were sacrificed on the seventh day following induced ischemia to determine the number of intact neurons at hippocampus and dentate gyrus to demonstrate the effects of ischemia and efficacy of the treatments administered. Surviving cell numbers were found in the sham operated group; 198, in the ischemia control group; 80, in the haloperidol-treated group; 185, in ziprasidonetreated group; 189. The groups showed significant difference in the comparison of the surviving cell numbers. However, the number of surviving cells did not significantly different between the ziprasidone and haloperidol-treated group. Previous studies with the ischemia model have demonstrated protective effects of haloperidol on hippocampal region. The findings of the present study show that ziprasidone, which is an atypical antipsychotic drug, may produce neuroprotective effects as potent as haloperidol, which is a typical antipsychotic drug. © 2014 OMU.
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    Temporal change of cognitive decline in Alzheimer's disease: The results of turquoise Alzheimer's working group [Alzheimer hastali{dotless}gi{dotless}ndaki bilişsel kayi{dotless}plari{dotless}n zamansal degişimi: Turkuaz Alzheimer çali{dotless}şma grubu sonuçlari{dotless}]
    (Turkish Neurological Society, 2014) Çinar N.; Şahin S.; Çakmak M.A.; Karşidag S.; Grubu T.
    Objective: The aim of the present study was to evaluate the temporal characteristics of the cognitive decline in Alzheimer's Disease (AD). For this reason, the factorial analysis of Mini-Mental State Examination (MMSE) was used in first visit and six months after. Material and Method: In this multicenter, longitudinal study, the data of 268 (152 mild, 116 moderate) cases obtained from the 'Turquoise Alzheimer Working Group' in Turkey, was evaluated. The patients who were diagnosed with probable AD according to the DSM-IV criteria were included in the study. Disability was assessed by means of global deterioration scale. The MMSE, which has 7 components (time orientation, spatial orientation, immediate memory, attention/concentration, delayed recall, language, and constructional praxis) was applied to all patients at the initial visit (baseline) and 6 months after. Results: The baseline evaluation revealed a significant correlation between orientation and attention subscales in the mild AD group. At the second evaluation of mild AD group and at both evaluations of moderate AD group, there were stronger correlations among all subscales. Subscales of time orientation, attention/concentration and immediate memory had higher factor loading in the first evaluation in mild AD group. Subscales of delayed recall and language were more significant in second evaluation. Subscale of spatial orientation was added in moderate AD group in both evaluation periods. Conclusion: Factor analysis of MMSE subscales varied according to the stage and duration of the disease. Generally, disturbances in attention and orientation might be the first findings in AD groups. When assessing AD cases, the properties of subscales in MMSE should be considered.