Researcher:
Aksu, Ekin Deniz

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Undergraduate Student

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Ekin Deniz

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Aksu

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Aksu, Ekin Deniz

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20202

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Researcher Of Publications: search.filters.isAuthorOfPublication.3922f862-27f1-4b5c-9a06-839f6c4514d5

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    PublicationOpen Access
    Vitamin D status across age groups in Turkey: results of 108,742 samples from a single laboratory
    (Galenos Yayınevi, 2020) Bereket, Abdullah; Hatun, Şükrü; Yeşiltepe Mutlu, Rahime Gül; Aksu, Ekin Deniz; Faculty Member; School of Medicine; 153504; 153511; N/A
    Objective: the aim was to determine vitamin D status in the general population in Turkey between 2011 and 2016, and to evaluate the effectiveness of the national vitamin D supplementation programme. Methods: serum 25-hydroxyvitamin D (25-OHD) measurement data were retrieved from an internationally accredited laboratory, operating nationwide. A total of 108,742 measurements of 25-OHD were analyzed using the cut-off values of 0-11 ng/mL, 12-19 ng/mL, 20-49 ng/mL, 50-70 ng/mL and >70 ng/mL for vitamin D deficiency, insufficiency, sufficiency, possibly harmful and excess respectively. Results: the mean±standard deviation 25-OHD level was 21.6±13.3 ng/mL. Mean 25-OHD concentrations by age groups were: 37.3 ng/mL, 30.1 ng/mL and 23.7 ng/mL for <1, 1-10 and 11-18 year old groups, respectively. Mean 25-OHD levels of children <1 year and 1-3 years of age were significantly higher than those found in other age groups. The prevalence of vitamin D deficiency (<12 ng/mL) was lowest in children at 1-3 years of age (5%). In subjects older than 18 years of age, mean 25-OHD levels were 18.2 ng/mL, 20.1 ng/ mL, 21.9 ng/mL and 21.1 ng/mL for age groups 19-30, 31-50, 51-70 and >70 years, respectively. Conclusion: successful implementation of the national vitamin D supplementation programme, appears to have nearly eliminated vitamin D deficiency for children under 1-years of age. However, the positive impact of the vitamin D supplementation diminishes as children get older suggesting that supplementation may be required in the older children and adults. In addition, improved awareness of the benefits and risks of excess vitamin D should prevent unnecessary and excessive use of vitamin D supplements.
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    PublicationOpen Access
    Effect of initial antifungal therapy on mortality among patients with bloodstream infections with different Candida species and resistance to antifungal agents: A multicentre observational study by the Turkish Fungal Infections Study Group
    (Elsevier, 2020) Yeşilkaya, A.; Menekşe, Güler Ö.; Karakoç, Ç.; Çınar, G.; Aydın, M.; Keske, Şahin, S.; Hacıseyitoğlu, D.; Yalçın, D.; Albayrak, Ö.; Can, F.; Doğan, Özlem; Kapmaz, Mahir; Tekin, Süda; Ataç, Nazlı; Albayrak, Özgür; Aksu, Ekin Deniz; Can, Füsun; Ergönül, Önder; Faculty Member; Researcher; Faculty Member; Faculty Member; School of Medicine; N/A; N/A; N/A; N/A; N/A; N/A; 103165; 110398
    This study aimed to describe the effect of initial antifungal therapy on patient mortality and to detail the current distribution and resistance patterns of Candida spp. among patients with candidaemia. A prospective observational study was performed among consecutive patients with candidaemia from 10 Turkish medical centres between January 2015 and November 2018. The primary outcome was 10-day mortality. Species were identified using MALDI-TOF/MS. A total of 342 patients with candidaemia were included, of which 175 (51.2%) were male and 68 (19.9%) were aged <18 years. The most common species were Candida albicans (47.4%), Candida parapsilosis (26.6%), Candida tropicalis (9.6%) and Candida glabrata (7.6%). Among all Candida spp., the 10-day case fatality rate (CFR) was 32.2%. The CFR was highest in patients with C. albicans (57.3%) and lowest in patients with C. parapsilosis (21.8%). The resistance rate to fluconazole was 13% in C. parapsilosis, with no significant effect on mortality. No resistance to echinocandins was detected. In the multivariate analysis, being in the ICU [OR = 2.1 (95% CI 1.32–3.57); P = 0.002], renal failure [OR = 2.4 (1.41–3.97); P = 0.001], total parenteral nutrition [OR = 2 (1.22–3.47); P = 0.006], C. albicans infection [OR = 1.7 (1.06–2.82); P = 0.027] and echinocandin as primary agent [OR = 0.6 (0.36–0.99); P = 0.047] were significantly associated with mortality. Candidaemia is a deadly infection. Fluconazole resistance is emerging, although it was not significantly related to mortality. Using an echinocandin as the primary agent could be life-saving.