Publications by authors named "Can Yilmaz"

This study discusses plant-mediated effects of beneficial soil-borne microorganisms on population growth parameters of Spodoptera exigua (Lepidoptera: Noctuidae), a major cotton pest. In particular, we investigated the impact of these microorganisms on oxidative stress, chlorophyll content, and sugar and protein levels in cotton plants, and how these changes in the plant affect the survival, development, reproduction, and ultimately population growth of the pest. A longer preadult period, lower preadult survival rate, and lower reproduction were obtained for the pest cohort feeding on treated plants, which resulted in lower population parameters, i.

View Article and Find Full Text PDF

This study was aimed to examine the differences in eating behaviours and mothers attitudes between baby-led vs. traditional spoon-feeding approaches and its effect on eating behaviours in preschool children. The study was conducted with 150 mothers of children aged 2-6, who applied to the Pediatrics Polyclinic of Başkent University Ankara Hospital, between December 2022 and February 2023.

View Article and Find Full Text PDF

Objectives: Maternal antibodies in cases of chronic autoimmune thyroiditis may be transferred to the baby via the transplacental route, leading to transient hyperthyroidism or hypothyroidism. The development of hyperthyroidism in one sibling and hypothyroidism in the other, however, is an extremely rare condition. We present two siblings, one with transient neonatal hyperthyroidism and the other with transient neonatal hypothyroidism, born to a euthyroid mother who was being treated for Hashimoto's thyroiditis.

View Article and Find Full Text PDF

Background: Functional variants of glutathione-S-transferase (GST)-M1, GST-T1, p53 might modulate brain cancer risk by altering the rate of metabolism and clearance of carcinogens from the brain tissue. In this study, the role of GST-M1, GST-T1, p53 polymorphisms on brain tumor was investigated.

Methods And Results: Brain tumor tissues of 143 patients were obtained from the Gulhane Training and Research Hospital, Department of Neurosurgery between 2019 and 2020.

View Article and Find Full Text PDF

Revealing biodiversity allows the accurate determination of the underlying causes of many biological processes such as speciation and hybridization. These processes contain many complex patterns, especially in areas with high species diversity. As two of the prominent zoogeographic areas, Anatolia and Caucasus are also home to the genus Darevskia, which has a complex morphological structure and parthenogenetic speciation.

View Article and Find Full Text PDF

Data obtained from long-term survey studies are valuable for assessing the population status and trends in critical populations of threatened species, like sea turtles. Akyatan Beach is one of the most important green turtle nesting beaches in the Mediterranean and has been monitored since 2006 without interruption. The beach is 22 km long and more than 100 m wide at some points, and both loggerhead and green turtles nest on the beach.

View Article and Find Full Text PDF

The inhibitory effects of bisphenol A (BPA) and bisphenol S (BPS), which are common pollutants, especially in marine and freshwater, on the electric eel acetylcholinesterase (AChE) activity were studied in vitro and in silico. Both produced full non-competitive inhibition, but the K value of BPA was half that of BPS. Molecular docking analyses revealed that both interact with residues W286, F297, Y337, F338 in the PAS and ABS regions in the middle and entrance of the active site gorge, and that BPS also has hydrogen bond with S203 of the catalytic triad.

View Article and Find Full Text PDF

Introduction: The aim of this study is to investigate a possible association between vitamin D deficiency and diabetic peripheral neuropathy in pediatric patients with type 1 diabetes mellitus.

Materials-methods: Twenty-nine patients with type 1 diabetes mellitus and 19 healthy controls were included to the study. All individuals were evaluated for diabetic peripheral neuropathy with nerve conduction studies.

View Article and Find Full Text PDF

Background: Bisphenol S (BPS) is a chemical compound that is utilized in the plastic industry as an alternative to bisphenol A (BPA). The toxic effects of BPS in fish is less known and limited. Therefore, in the present study, the influence of BPS on rainbow trout (Oncorhyncus mykiss) hepatocytes in vitro was investigated.

View Article and Find Full Text PDF

Objective: Monogenic diabetes is a heterogeneous disease that causes functional problems in pancreatic beta cells and hyperglycemia. The aim of this study was to determine the clinical and laboratory features, the admission characteristics and distribution of monogenic form of diabetes in childhood in Turkey.

Methods: Patients aged 0-18 years, who were molecularly diagnosed with monogenic diabetes, and consented to participate, were included in the study.

View Article and Find Full Text PDF

Background: Marine actinomycetes are among indispensable sources of natural bioactive compounds with unique antimicrobial and anti-cancer activities.

Objective: Herein, it was aimed to elucidate the bioactive potential of a marine-derived Streptomyces ovatisporus S4702T, isolated previously.

Methods: Streptomyces ovatisporus S4702 was cultured in N-Z Amine broth, and extraction was carried out using different organic solvents.

View Article and Find Full Text PDF

Background: Indole-based heterocyclic compounds play important roles in pharmaceutical chemistry due to their unexpected biological and pharmacological properties.

Objective: Herein, we describe novel biological properties (antioxidant, antimicrobial and anti-cancer) of 3- bromo-1-ethyl-1H-indole (BEI) structure.

Methods: BEI was synthesized from 1-Methyl-2-phenylindole and N-bromosuccinimide and was characterized by using 1H and 13C NMR.

View Article and Find Full Text PDF

Objective: To determine the prevalence of obesity and metabolic syndrome (MetS) in children and adolescents with type 1 diabetes (T1D) and to compare the widely accepted and used diagnostic criteria for MetS established by the International Diabetes Federation (IDF), World Health Organisation (WHO) and National Cholesterol Education Program-Adult Treatment Panel III (NCEP-ATPIII).

Methods: We conducted a descriptive, cross sectional study including T1D patients between 8-18 years of age. The three sets of criteria were used to determine the prevalence of MetS and findings compared.

View Article and Find Full Text PDF

Objectives: The palatine tonsil is a significant part of the secondary immune system. Tonsillitis and idiopathic tonsillar hypertrophy (ITH) are the most common pathologies of this component. Although there are studies on their pathogenesis, there is insufficient study of the role of antioxidant agents.

View Article and Find Full Text PDF

Objective: No large study has been conducted to date to compare the effectiveness of prednisolone, alendronate and pamidronate as first-line treatment in children with hypercalcemia due to vitamin D intoxication. The aim was to perform a multicenter, retrospective study assessing clinical characteristics and treatment results.

Methods: A standard questionnaire was uploaded to an online national database system to collect data on children with hypercalcemia (serum calcium level >10.

View Article and Find Full Text PDF

Objectives: To evaluate the parenchymal elasticity of the thyroid gland with acoustic radiation force impulse imaging in pediatric patients with Hashimoto thyroiditis and to compare it with healthy volunteers.

Methods: Twenty-six patients with Hashimoto thyroiditis and 26 healthy volunteers between 6 and 17 years were included. The shear wave velocity (SWV) values of both thyroid lobes in both groups were evaluated.

View Article and Find Full Text PDF

Objective: The aim of this study is to evaluate the shear wave velocity (SWV) of the thyroid gland with acoustic radiation force impulse elastography in children with type 1 diabetes mellitus (T1D).

Materials And Methods: Between November 2015 and April 2016, 35 T1D patients who were referred to our hospital's endocrinology outpatient clinic (mean age, 11.88 ± 4.

View Article and Find Full Text PDF

Objective: Noonan syndrome (NS) is a multisystem disorder, and short stature is its most striking manifestation. Optimal growth hormone (GH) treatment for NS is still controversial. In this study, using a nationwide registration system, we aimed to evaluate the growth characteristics and the clinical features of NS patients in Turkey and their growth response to GH treatment.

View Article and Find Full Text PDF

Objective: Prevalence of congenital hypothyroidism (CH) in Turkey at birth was reported to be as high as 1:650 in 2008-2010. Incidence rates of permanent and transient CH separately are unknown due to lack of follow-up data. We aimed to evaluate the impact of transient hypothyroidism on increasing incidence of CH and to determine the natural course and the clinical, biochemical, and imaging characteristics of transient CH.

View Article and Find Full Text PDF

Objective: Currently, in Turkey, fault rates in traffic accidents are determined according to the initiative of accident experts (no speed analyses of vehicles just considering accident type) and there are no specific quantitative instructions on fault rates related to procession of accidents which just represents the type of collision (side impact, head to head, rear end, etc.) in No. 2918 Turkish Highway Traffic Act (THTA 1983).

View Article and Find Full Text PDF

Background: Bisphosphonates are used in the treatment of vitamin D intoxication (VDI) after failure of conventional therapy including prednisolone. Safety concerns restrict the use of bisphosphonates from being used as first-line therapy for VDI in children. The aim of this study was to evaluate the efficacy and safety of pamidronate in comparison with prednisolone in children with VDI.

View Article and Find Full Text PDF

Previous genetic studies have demonstrated that natal homing shapes the stock structure of marine turtle nesting populations. However, widespread sharing of common haplotypes based on short segments of the mitochondrial control region often limits resolution of the demographic connectivity of populations. Recent studies employing longer control region sequences to resolve haplotype sharing have focused on regional assessments of genetic structure and phylogeography.

View Article and Find Full Text PDF