Browsing by Author "Bingol, Canan Aykut"

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    Diffusion tensor imaging in early amyotrophic lateral sclerosis using 3T magnetic resonance imaging
    (EGE UNIV, 2018-01-01) Sarsilmaz, Aysegul; Firat, Zeynep; Ulug, Aziz M.; Karlikaya, Geysu; Bingol, Canan Aykut; Hamamci, Andac; Kovanlikaya, Ilhami
    Objective: Amyotrophic lateral sclerosis (ALS) is a multisystem condition which impairs white matter, corticospinal tract and frontotemporal functions including cognition and behavior. This study aimed to perform diffusion tensor imaging (DTI) to detect white matter microstructural abnormalities, and also understanding the pathophysiology in ALS using 3T magnetic resonance imaging. Methods: The study examined 12 patients (7 males, 5 females) with sporadic ALS and 10 subjects in the control group (7 males, 3 females) by voxel-based analysis of DTI with 3T MRI. We compared fractional anisotropy (FA) and apparent diffusion coefficient (ADC) parameters in the corticospinal tracts among patients who had ALS and those in the healthy control by DTI region of interest (ROI) and tractography techniques. Results: The FA and ADC measurements of the patient group were respectively 0.638 +/- 0.041 and 0.350 +/- 0.01 (p<0.001). The results of the healthy control group were respectively 0.701 +/- 0.054 and 0.288 +/- 0.027 (p<0.05). DTI showed decreased fractional anisotropy in bilateral corticospinal tracts and internal capsule posterior crus. There was a correlation between the FA reductions in this region and the severity of the disease in the patients with ALS. Conclusion: Consequently, with this longitudinal DTI study, the progress of upper motor fiber degeneration in ALS was demonstrated. It may be useful to utilize DTI to monitor the progress and effectiveness of treatment interventions, as well as understanding the pathophysiology of ALS.
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    The frequency and severity of metabolic acidosis related to topiramate
    (SAGE PUBLICATIONS LTD, 2016-01-01) Ture, Hatice; Keskin, Ozgul; Cakir, Ulkem; Bingol, Canan Aykut; Ture, Ugur
    Objective: We planned a cross-sectional analysis to determine the frequency and severity of metabolic acidosis in patients taking topiramate while awaiting craniotomy. Methods: Eighty patients (18 - 65 years) taking topiramate to control seizures while awaiting elective craniotomy were enrolled. Any signs of metabolic acidosis or topiramate-related side effects were investigated. Blood chemistry levels and arterial blood gases, including lactate, were obtained. The severity of metabolic acidosis was defined according to base excess levels as mild or moderate. Results: Blood gas analysis showed that 71\% (n = 57) of patients had metabolic acidosis. The frequency of moderate metabolic acidosis was 56\% (n = 45), while that of mild metabolic acidosis was 15\% (n = 12). A high respiratory rate was reported in only 10\% of moderately acidotic patients. Conclusions: In patients receiving topiramate, baseline blood gas analysis should be performed preoperatively to determine the presence and severity of metabolic acidosis.