Publications by authors named "Coskun C"

Congenital thrombotic thrombocytopenic purpura (cTTP), which is associated with mutations in the gene for a disintegrin and metalloproteinase with a thrombospondin type 1 motif member 13 (ADAMTS13), is a chronic and lifelong disease. The clinical course is variable. Regularly using ADAMTS13-containing products such as fresh frozen plasma (FFP) for long-term prophylaxis is the most important treatment to prevent thrombotic microangiopathy (TMA) episodes.

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Introduction: Optical Coherence Tomography Angiography (OCTA) is an examination that is increasingly used in neurodegenerative diseases. This study in multiple sclerosis (MS) patients; It aims to reveal the presence of vascular involvement in the retina and optic nerve and its relationship with disease-related clinical parameters with the help of OCTA.

Methods: One eye of 49 MS patients and 28 healthy controls were included in the study.

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Objective: Obesity and diabetes mellitus (DM) are major risk factors for osteoarthritis (OA), but it remains unclear how comorbidity affects apoptosis signaling in OA. This study investigated the effect of metabolic diseases on apoptosis and apoptosis-related intracellular and extracellular signaling in OA.

Methods: Excision materials of human articular cartilage from total knee arthroplasties were collected.

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  • Rheumatoid arthritis (RA) is an autoimmune disease affecting 1% of the global population, more common in females, and this study examines the anti-inflammatory effects of INSL3, a peptide hormone predominantly found in males.
  • The research involved in vivo experiments with male rats treated with varying doses of INSL3 and prednisolone, assessing joint inflammation, severity, and thermal sensitivity, revealing that INSL3 reduced inflammation but was less effective than prednisolone overall.
  • In vitro tests on macrophage cells showed that higher doses of INSL3 improved cell viability and morphology, suggesting it could be a supportive treatment alongside existing therapies for RA.
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  • Atrial fibrillation (AF) is often triggered by atrial premature complexes (APCs) during exercise, and this study aims to understand their relationship through long-term patient follow-up.
  • The research involved 1559 patients without obstructive coronary artery disease, divided into AF (+) and AF (-) groups based on the development of AF over an average follow-up of around 48 months.
  • Findings indicate that older age and the presence of APCs during exercise significantly increase the risk of developing AF, with patients showing APCs having a much lower AF-free survival rate.
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: In the surgical treatment of benign prostatic hyperplasia (BPH), laser enucleation of the prostate is recommended as an alternative to transurethral resection (TURP) and open prostatectomy (OP). The thulium fiber laser, with its superficial penetration depth, can offer a rapid learning process by causing less heat injury and capsule damage. This study compares the first 60 cases of an endourologist performing thulium fiber enucleation of the prostate (ThuFLEP) without a mentor to the results of OP and TURP performed by experienced surgeons.

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: Percutaneous nephrolithotomy (PCNL) is a current treatment method with high success rates and low complication rates in treating large kidney stones. It can be conducted in different positions, especially supine and prone positions. PCNL in the supine position is becoming increasingly common due to its advantages, such as simultaneous retrograde intervention and better anesthesia management.

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  • Adenosine deaminase 2 deficiency is an inherited autoinflammatory disorder caused by mutations leading to an inflammatory response, characterized by high levels of inflammatory cytokines and issues with neutrophil function.
  • The condition presents a wide range of symptoms beyond vasculitis, including hematological and immunological issues, requiring diagnosis through genetic testing and measurement of enzyme activity.
  • Current treatments focus on TNF-α inhibitors for controlling vasculitis, while severe cases may benefit from stem cell transplants; future therapies may include recombinant protein and gene therapy.
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Beta thalassemia is one of the monogenic disorders characterized by decreased production of β-globin chains and various types of mutations have been reported to cause thalassemia phenotype. On the other hand, rare mutations also affect and diversify the disease spectrum. Herein, we present an anemic patient from Turkey diagnosed with dominant β thalassemia due to a heterozygous mutation in exon 3 of the gene.

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Background: Pulmonary Langerhans cell histiocytosis (pLCH) is a rare disease, mostly a component of multisystemic LCH. We aimed to investigate the clinical features and treatment results in children with pLCH.

Methods: We retrospectively reviewed the clinical, radiological, and treatment data of 37 patients with pLCH, diagnosed from 1974 to 2022.

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Background: The treadmill exercise test is widely used to determine cardiovascular risk and mortality. Premature ventricular complexes (PVCs) are frequently observed during exercise stress testing. The literature on the role of PVCs observed during treadmill exercise testing in predicting prognosis is controversial.

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Background: Immune thrombocytopenic purpura (ITP) is a rare auto-antibody mediated disease of isolated thrombocytopenia (<100,000/μL) with normal haemoglobin levels and leukocyte counts. Only a small number of ITP cases have been reported with accompanying ophthalmological findings. Herein, we report an ITP case with demonstrative retinal haemorrhages.

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Background: Examination of corneal densitometry measurements using the Pentacam Scheimpflug imaging system in cases of pseudoexfoliative glaucoma (PEXG) and ocular hypertension (OHT).

Methods: The study included 50 eyes of 29 PEXG patients, 25 eyes of 16 OHT patients, and 76 eyes of 38 healthy control subjects followed in the glaucoma clinic. Corneal densitometry values of all cases were measured using the Scheimpflug imaging system (Pentacam, Oculus, Germany).

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Purpose: Investigation of how position affects postoperative pain levels and hospitalization in patients undergoing percutaneous nephrolithotomy (PNL) surgery.

Methods: Between August 2019 and December 2022, a total of 156 patients who underwent prone (pPNL) and supine percutaneous nephrolithotomy (sPNL) due to kidney stones were included in the study. Demographic data, preoperative CT scans, laboratory results, transfusion rates, operation durations, complication rates, stone-free rates, analgesic use, nephrostomy removal time, hospitalization duration, fluoroscopy time, hemoglobin decrease and postoperative Visual Analog Scale (VAS) scores were evaluated for all patients.

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Background: Measurement of serum amino acid (AA) concentrations is important in particular for the diagnosis and monitoring of inborn errors of AA metabolism. To ensure optimal clinical interpretation of AAs, reliable biological variation (BV) data are essential. In the present study, we derived BV data for 22 non-essential, conditionally essential, and essential AAs and assessed differences in BV of AAs related to sex.

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To evaluate the optical coherence tomography angiography (OCT-A) findings in patients with systemic lupus erythematosus (SLE). Twenty-eight eyes of 28 patients with SLE and 27 eyes of 27 age and sex matched healthy controls were enrolled in this cross-sectional study. The vessel densities in the macula and optic disc were evaluated using the OCT-A (Optovue, Inc.

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  • Esophageal carcinoma is very rare in children and adolescents, with two reported cases showing progressive dysphagia and no specific underlying risk factors.
  • One case was adenocarcinoma, which responded well to treatment, while the other was squamous cell carcinoma, which was unresponsive and led to the patient's death.
  • A review of literature on pediatric esophageal carcinoma revealed a high incidence of progressive dysphagia, a common occurrence of squamous cell carcinoma, and a poor prognosis due to metastasis in many cases at diagnosis, highlighting the need for collaborative treatment efforts.
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Background: Ocular complications are known to appear in inflammatory bowel disease (IBD). Among these, posterior segment complications can lead to substantial morbidity. The aim of the study is to evaluate the retinal nerve fiber layer (RNFL), ganglion cell-inner plexiform layer (GCIPL), and macula thickness measurement in patients with IBD.

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Background: Pacing-induced cardiomyopathy (PICM) occurs as a result of high-burden right ventricular (RV) pacing, which usually develops in patients with complete atrioventricular (AV) block. There is a paucity of data on the association between PICM and pre-implantation left ventricular mass index (LVMI). Thus, the purpose of this study was to analyze the influence of LVMI on PICM in patients who had dual chamber permanent pacemakers (PPMs) implanted secondary to complete AV block.

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  • The study aimed to analyze Optical Coherence Tomography Angiography (OCT-A) results in patients with Ocular Hypertension (OHT) compared to healthy individuals.
  • It included 34 OHT patients and 22 healthy controls, measuring various factors like foveal thickness and vessel density using specialized software.
  • Results showed no significant differences in macular measurements, but OHT patients had a larger foveal avascular zone and lower optic nerve vessel density, suggesting potential risks for glaucoma development.
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Background: Klippel-Trenaunay syndrome (KTS) is an overgrowth syndrome associated with capillary/venous/ lymphatic malformations with limb hypertrophy and cancer risk. Various cancers, mostly Wilms tumor, have been reported in patients with KTS, but not leukemia. Chronic myeloid leukemia (CML) is also a rare disease in children, where there is no known disease or syndrome to predispose to CML.

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Microbial fuel cells are a promising technology for future wastewater treatment, as it allows cleaning and power generation simultaneously. The bottleneck of microbial fuel cells is often its cathodes because they determine the power output. Gas diffusion electrodes might overcome this bottleneck due to their low production costs and high oxygen reduction rates.

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