6,303 results match your criteria: "Samsun Ondokuz Mayıs University[Affiliation]"

In the present study, the effects of the acetylcholinesterase (AChE) enzyme inhibitor rivastigmine (RIVA) on spike-wave discharges (SWDs), memory impairment, anxiety-like behavior, and the transient receptor potential vanilloid 1 (TRPV1) gene expression were investigated in genetic absence epileptic Wistar Albino Glaxo/Rijswijk (WAG/Rij) rats. After tripolar electrodes were implanted on the WAG/Rij rats' skulls, single doses of 0.125, 0.

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Background: Nurses working in intensive care units experience insomnia and accompanying psychosocial problems due to working conditions.

Aim: This study explores with a phenomenological approach the psychosocial problems experienced by intensive care nurses regarding sleep patterns within the scope of working conditions.

Study Design: In this phenomenological study, semi-structured in-depth interviews were conducted with 16 nurses working in the surgical intensive care unit of a state hospital in Türkiye.

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Objective: This study aimed to determine the ecological footprint awareness and ecological intelligence levels of nurses working in a hospital.

Methods: This descriptive study was conducted with 290 nurses working in a hospital. The study data were collected using a descriptive questionnaire, "Ecological Intelligence Scale", and "Ecological Footprint Awareness Scale".

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This study aimed to examine the relationship between depressive symptoms and spiritual well-being in older adults, with a particular focus on the mediating role of meaning and purpose of life in this relationship. This research used a correlational and cross-sectional design and was conducted with 148 older adults between May and August 2023. Data were collected face-to-face using a personal information form, the Geriatric Depression Scale-15 (short form), the Spiritual Well-Being Scale, and the Meaning and Purpose of Life Scale.

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The superfamily Ascaridoidea are parasitic nematodes in vertebrates, including birds and humans. In order to investigate the presence and distribution of these parasitic nematodes in birds acting as the definitive host, 157 birds of 64 bird species belonging to 16 orders were collected and necropsied in the Kızılırmak Delta area in the Bafra district of Samsun province. The parasites collected were fixed in 70% ethyl alcohol and identified under a light microscope, and morphologically important regions were photographed for identification.

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Background: The present study aimed to comprehensively evaluate the anticancer, anti-inflammatory, and antioxidant properties of Globularia cordifolia L.

Samples: The plant material was collected and extracted using the maceration method. Antioxidant activities were assessed through DPPH (i.

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Background: The study evaluated the relationship between balance function and skeletal muscle mass index (ASMI), physical function, and fatigue in children with chronic kidney disease (CKD).

Methods: A cross-sectional study of 83 children with CKD (stages 1-4, dialysis, transplant) and 71 healthy controls was conducted. Functional performance tests, including gait speed, 6-min walk distance (6MWD), five-repetition sit-to-stand (5RST), and timed up-and-go (TUG) tests, were administered.

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Base-catalyzed thiol-epoxy reactions: Energetic and kinetic evaluations.

J Mol Graph Model

December 2024

Chemical Engineering Department, Ondokuz Mayıs University, 55139, Samsun, Turkey. Electronic address:

The mechanism of the base-catalyzed thiol-epoxide stage of the thiol-ene/thiol-epoxide curing process was investigated using quantum chemical tools. This study searched for conventional tertiary amines with low to medium basicity as initiators to control reaction rates and tailor industrial applications. Challenges arise from the stronger basicity of initiators, leading to an uncontrollable and short curing application period.

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Unlabelled: Today, nanoplastics (NPs) are a growing environmental concern due to their persistence and widespread distribution, posing risks to ecosystems and human health. Their ability to transport pollutants makes them particularly dangerous, underscoring the urgent need for effective removal methods. Herein, we report the synthesis of an environmentally friendly material that enables the magnetic removal of polystyrene nanoparticles (PSNPs) from aqueous solutions by green chemistry approach.

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Background: This retrospective study aimed to investigate the relationships between the radiographic features of impacted maxillary canines (IMCs) and traction duration and the factors affecting treatment success.

Methods: Pre-treatment panoramic radiographs and patient records of 121 consecutive patients with IMCs were analyzed. The measurements included the angle of the IMC with the midline (α-angle), the horizontal position of the IMC relative to the adjacent teeth (S-Sector), the distance from the IMC to the occlusal plane (d-distance), the apex position of the IMC (A), and the vertical height of the IMC relative to the adjacent lateral tooth (V).

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The Causes and Diagnosis of Non-congenital Adrenal Hyperplasia Primary Adrenal Insufficiency in Children.

J Clin Res Pediatr Endocrinol

December 2024

Ondokuz Mayıs University, Faculty of Medicine, Department of Paediatric Endocrinology, Samsun, Turkiye.

Primary adrenal insufficiency (PAI) is a critical condition that requires prompt diagnosis and initiation of treatment. Diagnosis can be challenging due to various underlying causes, including defects in adrenal gland development, resistance to adrenocorticotropic hormone (ACTH), autoimmune causes, and metabolic problems. A specific diagnosis is essential for developing a treatment plan and identifying other possible accompanying pathologies.

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Unlabelled: Phenylalanine (PA) levels below 360 µmol/L do not require treatment; however, cognitive deficits have been observed in patients with elevated PA levels, necessitating a safe upper limit for treatment and therapeutic objectives. The main purpose of this study is to evaluate the correlation between developmental assessments (Denver Developmental Screening Test-II [DDST-II] and Ankara Developmental Screening Inventory [ADSI]) and electroencephalogram (EEG) findings with blood PA levels and genotypic data in non-phenylketonuria mild Hyperphenylalaninemia (HPA) patients, to re-evaluate their treatment status based on potential adverse outcomes. This study encompassed 40 patients aged 1-5 years diagnosed with HPA and not on treatment, identified through initial blood PA levels, and monitored for a minimum of 1 year on an unrestricted diet.

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The outcomes of bifurcation percutaneous coronary intervention (PCI) in octogenarians and nonagenarians have received limited study. We compared the procedural characteristics and outcomes of bifurcation PCIs among patients ≥80 vs <80-years-old in a multicenter registry. Of 1,253 patients who underwent 1,262 bifurcation PCIs between 2014 and 2024 at six centers, 194 (15%) were octogenarians or nonagenarians.

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In this study, the photodegradation of cetirizine dihydrochloride (CET) by BiO/TiO heterojunctions under simulated solar light irradiation (300-800nm) was examined in detail for the first time. A hydrothermal synthesis of the photocatalyst was carried out, and several analytical techniques were used to characterize the product. The resulting BiO/TiO photocatalyst effectively removed CET from an aqueous solution.

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Performance of Persicaria amphibia (L.) for Phytoremediation of Heavy Metals Contaminated Water.

Bull Environ Contam Toxicol

December 2024

Department of Chemistry, Faculty of Science, Ondokuz Mayıs University, Kurupelit, Samsun, 55139, Türkiye.

Fast-paced global industrialization due to population growth poses negative water implications, such as pollution by heavy metals. Phytoremediation is deemed as an efficient and environmentally friendly alternative which utilizes different types of hyperaccumulator plants known as macrophytes for the removal of heavy metal pollutants from contaminated water. In this study, the removal of Cu(II), Ni(II), Pb(II), and Cd(II) heavy metal ions contaminated water was studied by using an aquatic plant, Persicaria amphibia (L.

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Road-associated microplastics, originating from tire wear and fragmented litter, are significant contributors to microplastic pollution. This study examines the characteristics of these particles within a university, focusing on their size, shape, color, and polymer composition. Suspended microplastics were collected using portable active samplers for PM and results have shown that PM concentrations peaked on Thursdays and declined, reaching their lowest levels on Sundays, with overall weekend measurements indicating reduced concentrations compared to weekdays.

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Context: Schiff bases, which have intriguing properties in many areas, have been studied extensively in recent years due to their structural properties and biological activities. In this research, a novel water-soluble Schiff base complex, Catena-((μ-(E)-2-((4-methoxy-2-oxidobenzylidene) ammonio) ethane-1-sulfonato potassium, CHKNOS (CMOAESP), was synthesized by a one-step condensation reaction of 2-hydroxy-4-methoxy benzaldehyde and taurine with the yield of 65%, 0.333 g.

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Plant-derived bioactive substances have demonstrated significant qualities that suggest they may be crucial in preventing various chronic diseases. Flavonoids, which include apigenin, are the biggest group of polyphenols. In our study, we aimed to obtain the methanol-chloroform (1:1) extract from the aerial parts of Hedge & Lamond and purify the apigenin using bioactivity-guided isolation to separate the active fraction.

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This study aims to develop a stable and efficient magnetic nanocomposite hydrogel (MNCH) for selective removal of methylene blue (MB) and crystal violet (CV). MNCHs with different FeO contents (0-9 wt%) were synthesized following graft co-polymerization method using sodium alginate, acrylamide, itaconic acid, ammonium persulfate and N,N-methylene bisacrylamide. Among them, MNCH, with 5 wt% FeO, showed highest removal efficiency (>95 %).

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Background: Intracranial hemorrhage (ICH) is reportedly rare but has high morbidity and mortality risk in persons with hemophilia. Although the risk factors that facilitate bleeding are known, the factors affecting the sequelae are not well known.

Objectives: We planned to investigate the risk factors for neurologic sequelae in children and adolescents with hemophilia suffering from ICH.

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In our study, we aimed to retrospectively compare vNOTES hysterectomy, a new method, with a vaginal hysterectomy (VH) and total laparoscopic hysterectomy (TLH). Our study included 186 hysterectomy cases (62 vNOTES hysterectomy, 62 VH, and 62 TLH) with benign indications diagnosed between 2021 and 2022. Our study is a retrospective and single-center study.

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Suppression of Tumorigenicity 2 (ST2), a member of the interleukin-1 (IL-1) superfamily, is recognized as an important biomarker in inflammatory responses and cardiovascular diseases. Elevated serum levels of sST2 have prognostic value, particularly in cases of cardiac stress such as heart failure and acute pulmonary embolism (APE). We aimed to assess ST2 levels as a potential biomarker for right heart dysfunction in APE patients, particularly in the context of its limited predictive value for mortality and risk stratification.

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Background: Dental disorders are one of the most important health problems, affecting billions of people all over the world. Early diagnosis is important for effective treatment planning. Precise dental disease segmentation requires reliable tooth numbering, which may be prone to errors if performed manually.

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