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    Correlation between vitamin D status and Wechsler Adult Intelligence Scale's comprehension subtest in patient with end-stage renal diseases
    (Wiley-Blackwell, 2016) Karaoglan, Mehmet; Emre, Memet Hanifi; Demirtas, Yasemin; Sahin, Idris; Taskapan, Hulya
    [Abstract Not Available]
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    Investigation of Cognitive Functions with Wechsler Adult Intelligence Scale's Comprehension Subtest and Mini-Mental State Examination in Patient with End-Stage Renal Diseases
    (Wiley-Blackwell, 2015) Karaoglan, Mehmet; Emre, Memet Hanifi; Demirtas, Yasemin; Sahin, Idris; Taskapan, Hulya
    [Abstract Not Available]
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    Investigation of cognitive functions with Wechsler Adult Intelligence Scale's comprehension subtest and Mini-Mental State Examination in patients with end-stage renal diseases
    (Wiley-Blackwell, 2015) Karaoglan, Mehmet; Emre, M. Hanifi; Demirtas, Yasemin; Sahin, Idris; Taskapan, Hulya
    [Abstract Not Available]
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    Postoperative Cognitive Dysfunction in Living Liver Transplant Donors
    (Baskent Univ, 2014) Bucak, Nizamettin; Begec, Zekine; Erdil, Feray; Toprak, Huseyin Ilksen; Cumurcu, Birgul Elbozan; Demirtas, Yasemin; Yologlu, Saim
    Objectives: Postoperative cognitive dysfunction is a serious complication that may be associated with increased mortality. Living-donor liver transplant includes major surgery for the donor. The purpose of this study was to evaluate preoperative and postoperative cognitive function of liver donors in living-donor liver transplant. Materials and Methods: In 102 patients who had hepatectomy for liver transplant donation, preoperative and postoperative (1 week) neuropsychologic tests were performed including the Trail Making Test, the Stroop effect, score on the Beck Depression Inventory, and the mini-mental state examination. Results: Liver transplant donors had significantly lower mean Trail Making A Test duration and greater mean Trail Making B Test error number after than before surgery. The mean Stroop effect reading durations (black and white reading; reading colored words) were significantly greater after than before surgery; the mean time difference between naming the colors of colored words minus reading colored words, and the error number, were smaller after than before surgery. The mean score on the Beck Depression Inventory and mini-mental state examination score were similar before and after surgery. Conclusions: Mild frontal lobe dysfunction may be present in liver donors at 1 week after surgery, and postoperative attention problems may be experienced by these patients.
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    RELATIONSHIPS BETWEEN PARKINSON'S DISEASE DEMENTIA AND 25-HYDROXY VITAMIN D AND BRAIN-DERIVED NEUROTROPHIC FACTOR LEVELS
    (Gunes Kitabevi Ltd Sti, 2021) Ekmekyapar, Tuba; Turkoz, Yusuf; Erdemli, Zeynep; Demirtas, Yasemin; Altinayar, Sibel
    Introduction: Parkinson's disease dementia is an important condition that worsens the quality of life in approximately 30% of parkinson disease patients. Vitamin D deficiency and brain-derived neurotrophic factor have been implicated in the pathogenesis of alzheimer type dementia, parkinson's disease, and many neurodegenerative diseases. The aim of this study was to investigate the relationship between cognitive impairment and 25-hydroxy vitamin D and brain-derived neurotrophic factor levels in parkinson's disease dementia patients. Materials and Method: 25-hydroxy vitamin D and brain-derived neurotrophic factor serum levels were evaluated in patients with parkinson's disease dementia (n = 63) and healthy controls (n = 33). Brain-derived neurotrophic factor and vitamin D levels were examined using one sample t-tests, and multiple comparisons among independent groups were done using ANOVA post hoc Tukey's test analysis. Wechsler Memory Scale and Mini-Mental State Examination were used to evaluate the cognitive functions of the groups. The disease levels of the patients were determined using the Hoehn and Yahr scale and the Unified Parkinson's Disease Rating Scale. Results: There was a significant negative correlation between the worsening of dementia and vitamin D levels (p = 0.009). However, there were significant negative correlations between the unified parkinson's disease rating scale daily living activity and Hoehn and Yahr scales and vitamin D levels. No significant relationship was found between brain-derived neurotrophic factor and parkinson's disease dementia (p = 0.983). Conclusions: Vitamin D deficiency plays a role in cognitive loss in parkinson's disease dementia. Vitamin D replacement can be used in dementia support treatment.