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Permanent URI for this collectionhttps://hdl.handle.net/11443/932

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Author: search.filters.author.Aksungar, Fehime BenliHas files: Yes

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    A rare association: celiac disease and multiple myeloma in an asymptomatic young patient
    (WALTER DE GRUYTER GMBH, 2016-01-01) Ongen, Belkiz; Aksungar, Fehime Benli; Tiftikci, Arzu; Coskun, Abdurrahman; Serteser, Mustafa; Usnsal, Ibrahim
    Celiac Disease (CD) is a gluten-sensitive enteropathy, and an autoimmune disorder involving an innate and adaptive immune response that occurs in genetically predisposed patients who are exposed to gluten-containing foods and other environmental factors. Early diagnosis and treatment are essential in preventing complications of the disease. Symptoms may appear both in childhood or adulthood by the ingestion of gluten and are usually characterized by gastrointestinal symptoms
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    Effects of peroxisome proliferator activated receptor gamma (PPAR gamma) agonist on fasting model applied neuron cultures
    (WALTER DE GRUYTER GMBH, 2022-01-01) Pinarbasi, Arzu; Pak, Meltem; Kolay, Murat; Oz Arslan, Devrim; Aksungar, Fehime Benli
    Objectives: Peroxisome proliferator activated receptor gamma (PPAR gamma) agonists used for the treatment of Diabetes Mellitus (DM), has important roles on the regulation of metabolism including ketogenesis in fasting and low glucose states. Recently PPAR gamma was proven to have antioxidant and anti-inflammatory effects on neuronal cells. Methods: In the present study, effects of pioglitazone (PPAR gamma agonist) on cell survival, energy metabolism and mitochondrial functions were investigated in glucose deprived fasting model applied SH-SY5Y (ATCC/CRL 2266) cell lines. Before and after pioglitazone treatment
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    ANALYSIS OF CHANGES IN PARATHYROID HORMONE AND 25 (OH) VITAMIN D LEVELS WITH RESPECT TO AGE, GENDER AND SEASON: A DATA MINING STUDY
    (SCIENDO, 2017-01-01) Serdar, Muhittin A.; Can, Basar Batu; Kilercik, Meltem; Durer, Zeynep A.; Aksungar, Fehime Benli; Serteser, Mustafa; Coskun, Abdurrahman; Ozpinar, Aysel; Unsal, Ibrahim
    Background: 25 (OH) vitamin D3 (25(OH) D) and parathyroid hormone (PTH) are important regulators of calcium homeostasis. The aim of this study was to retrospectively determine the cut-off for sufficient 25(OH) D in a four-season region and the influence of age, seasons, and gender on serum 25(OH) D and PTH levels. Methods: Laboratory results of 9890 female and 2723 male individuals aged 38.8 +/- 22.1 years who had simultaneous measurements of 25(OH) D and PTH were retrospectively analyzed by statistical softwares. Serum 25(OH) D and PTH levels were measured by a mass spectrometry method and by an electrochemiluminescence immunoassay, respectively. Results: Mean serum 25(OH) D levels showed a sinusoidal fluctuation throughout the year and were significantly (p < 0.01) higher in summer and autumn. On the other hand, PTH levels were significantly higher (p < 0.01) in women and showed an opposite response to seasonal effects relative to 25(OH) D. Lowest levels of 25(OH) D were detected in people aged between 20 and 40 years whereas PTH hormone levels were gradually increasing in response to aging. The significant exponential inverse relationship that was found between PTH and 25(OH) D (PTH = (exp)(4.12-0.064{*}(sqrt)(25(OH) D)) (r=-0.325, R-squared=0.105, p < 0.001)) suggested that the cut-off for sufficient 25(OH) D should be 75 nmol/L. Conclusions: Our retrospective study based on large data set supports the suitability of the currently accepted clinical cut-off of 75 nmol/L for sufficient 25(OH) D. However, the issue of assessing Vitamin D deficiency remains difficult due to seasonal variations in serum 25(OH) D. Therefore, PTH measurements should complement 25(OH) D results for diagnosing Vitamin D deficiency. It is imperative that seasonally different criteria should be considered in future.