Publications by authors named "Ali Sahin"

Intramedullary schwannomas are a type of benign spinal cord tumor that originates from the Schwann cells of the nerve sheath. They are relatively rare and typically occur within the spinal cord itself, rather than in the surrounding tissue. Treatment options for cervical intramedullary schwannomas include surgical removal of the tumor, radiation therapy, and observation.

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Genitourinary tuberculosis is the second most common form of extrapulmonary tuberculosis. We present the case of a male patient in his late 20s who presented to his general practitioner with symptoms of recurrent urinary tract infection (UTI). Upon investigation his estimated glomerular filtration rate was found to be 61 ml/min/1.

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Osteonecrosis of the femoral head can lead to end-stage osteoarthritis when left untreated. The incidence has been on the rise since the onset of the COVID-19 pandemic. Core decompression of the femoral head is usually the first line of surgical treatment when conservative options fail.

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Cytoskeletal network dysregulation is a pivotal determinant in various immunodeficiencies and autoinflammatory conditions. This report reviews the significance of actin remodeling in disease pathogenesis, focusing on the Arp2/3 complex and its regulatory subunit actin related protein 2/3 complex subunit 1B (ARPC1B). A spectrum of cellular dysfunctions associated with ARPC1B deficiency, impacting diverse immune cell types, is elucidated.

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  • The study aimed to explore gender differences in the phenotypical expression of Behçet's disease (BD) using data from the International AIDA Network Registry, focusing on damage index, disease manifestations, and cardiovascular risk.
  • A total of 1024 patients (567 males and 457 females) were examined, revealing that males had a significantly higher overall damage index and more frequent occurrences of uveitis and vascular involvement, while females showed higher instances of arthralgia, arthritis, and CNS involvement.
  • Key factors associated with major organ involvement included male gender, treatment with biologic agents, origin from endemic regions, and longer disease duration, indicating a more severe course of BD in males compared to females.
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Despite limited number of studies, oxysterols are known to contribute to the progression of nonalcoholic steatohepatitis (NASH) by affecting lipid/cholesterol metabolism and elevating proinflammatory and profibrotic processes. Accordingly, we used a high cholesterol-mediated in vivo NASH model and aimed to determine alterations in fatty acid content and oxysterol levels together with their effects on cholesterol/lipid metabolism during the progression of the disease. We further investigated the beneficial role of α-tocopherol.

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  • The study focuses on long-term follow-up of 18 pediatric and adult patients with hypomorphic DCLRE1C mutations diagnosed with leaky severe combined immunodeficiency (SCID).
  • Common clinical manifestations included recurrent infections, skin issues, autoimmune diseases, and malignancy, with a significant number of patients showing low immunoglobulin levels and T/B-cell lymphopenia.
  • Findings suggested a dominant Th1 immune response, with elevated IFN-γ and T cells contributing to chronic inflammation and autoimmunity, emphasizing the need for ongoing patient monitoring post-hematopoietic stem cell transplantation (HSCT).
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  • The study explores how different sexual positions impact ejaculation duration and the overall control of ejaculation, which is important for sexual pleasure.
  • Conducted through an online survey with 1904 heterosexual men aged 18-65, it looked at factors related to premature ejaculation (PE) and how these men engage in various sexual positions.
  • Results indicated a significant preference for doggy style across all groups, with non-PE participants more likely to change positions when close to ejaculation compared to PE participants, suggesting that adjusting sexual positions may help manage PE.
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Background: Varicocoele is a correctable cause of male infertility. Although physical examination is still being used in diagnosis and grading, it gives conflicting results when compared to ultrasonography-based varicocoele grading.

Objectives: We aimed to develop a multi-class machine learning model for the grading of varicocoeles based on ultrasonographic measurements.

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Introduction: The objective of this study is to predict the probability of prostate cancer in PI-RADS 3 lesions using machine learning methods that incorporate clinical and mpMRI parameters.

Methods: The study included patients who had PI-RADS 3 lesions detected on mpMRI and underwent fusion biopsy between January 2020 and January 2024. Radiological parameters (Apparent diffusion coefficient (ADC), tumour ADC/contralateral ADC ratio, Ktrans value, periprostatic adipose tissue thickness, lesion size, prostate volume) and clinical parameters (age, body mass index, total prostate specific antigen, free PSA, PSA density, systemic inflammatory index, neutrophil-lymphocyte ratio [NLR], platelet lymphocyte ratio, lymphocyte monocyte ratio) were documented.

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  • ICF syndrome is a rare, autosomal recessive disease linked to mutations in specific genes (DNMT3B, ZBTB24, CDCA7, HELLS) that lead to immune deficiencies and facial anomalies.
  • This study examined the expression of transcription factors and cytokines in various helper T cell subsets from ICF patients and found significant reductions in these factors compared to healthy controls.
  • It also identified a novel mutation in the ZBTB24 gene related to ICF2 syndrome, marking the first molecular investigation of T cell subsets in ICF syndrome.
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  • IPEX is a rare autoimmune disorder caused by FOXP3 variants, presenting diverse symptoms like early-onset diabetes, eczema, and enteropathy, creating challenges in diagnosis and management.
  • A study of 12 IPEX patients analyzed clinical features and immunological characteristics, revealing a distinction between classical and atypical cases, with atypical patients showing more allergic symptoms and severe chronic diarrhea.
  • Most patients were treated with immunosuppressants or underwent hematopoietic stem cell transplantation, with HSCT showing the most effective long-term control of symptoms, and sirolimus providing better outcomes than other immunosuppressants.
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The first-line treatment of penile cancer confined to the glans (Tis-T2) is based on organ-sparing approaches. Our aim is to report functional outcomes of total glans resurfacing (TGR), wide local excision (WLE) and glansectomy. A retrospective analysis was conducted from January 2013 to October 2022.

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Aim: To present symptoms and surgical results of patients operated on with the diagnosis of tethered cord syndrome (TCS) in adulthood.

Material And Methods: In this retrospective study, 20 patients older than 18 years were evaluated. There were 17 female and 3 male patients.

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Background/aim: LUNGBANK was established as part of Project LUNGMARK, pioneering a biorepository dedicated exclusively to lung cancer research. It employs cutting-edge technologies to streamline the handling of biospecimens, ensuring the acquisition of high-quality samples. This infrastructure is fortified with robust data management capabilities, enabling seamless integration of diverse datasets.

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Chronic skin wounds pose a global clinical challenge, necessitating effective treatment strategies. This study explores the potential of 3D printed Poly Lactic Acid (PLA) scaffolds, enhanced with Whey Protein Concentrate (WPC) at varying concentrations (25, 35, and 50% wt), for wound healing applications. PLA's biocompatibility, biodegradability, and thermal stability make it an ideal material for medical applications.

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  • The study investigates the relationship between Familial Mediterranean fever (FMF), a severe inflammatory condition, and the risk of cancer development compared to other diseases like fibromyalgia, Still's disease, and Behçet's disease.
  • Results show that FMF patients have a significantly lower risk for malignancies compared to fibromyalgia patients, with a risk ratio (RR) of 0.26; however, this risk is less clear when comparing with the other conditions.
  • Factors influencing cancer risk in FMF patients include age at onset and diagnosis, frequency of disease attacks, and treatment with specific biotechnological agents.
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: The number of hip arthroscopy procedures is on the rise worldwide, and awareness regarding proper management of the hip capsule has increased. No capsulotomy shape is agreed upon as a standard approach, with literature supporting both isolated interportal and T-shaped capsulotomies. The aim of this retrospective cohort study is to report the clinical results of a standardized extended interportal capsulotomy (EIPC) during hip arthroscopy.

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Purpose: The clinical relevance of human leukocyte antigen (HLA) subtypes such as HLA-B51 on Behçet's disease (BD)-related uveitis and non-infectious uveitis (NIU) unrelated to BD remains largely unknown.

Methods: Data were prospectively collected from the International AIDA Network Registry for BD and for NIU. We assessed differences between groups (NIU unrelated to BD and positive for HLA-B51, BD-related uveitis positive for HLA-B51 and BD-related uveitis negative for HLA-B51) in terms of long-term ocular complications, visual acuity (VA) measured by best corrected visual acuity (BCVA), anatomical pattern, occurrence of retinal vasculitis (RV) and macular edema over time.

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Purpose: To predict the post transurethral prostate resection(TURP) urethral stricture probability by applying different machine learning algorithms using the data obtained from preoperative blood parameters.

Methods: A retrospective analysis of data from patients who underwent bipolar-TURP encompassing patient characteristics, preoperative routine blood test outcomes, and post-surgery uroflowmetry were used to develop and educate machine learning models. Various metrics, such as F1 score, model accuracy, negative predictive value, positive predictive value, sensitivity, specificity, Youden Index, ROC AUC value, and confidence interval for each model, were used to assess the predictive performance of machine learning models for urethral stricture development.

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A middle ear infection occurs due to the presence of several microorganisms behind the eardrum (tympanic membrane) and is very challenging to treat due to its unique location and requires a well-designed treatment. If not treated properly, the infection can result in severe symptoms and unavoidable side effects. In this study, excellent biocompatible ethyl cellulose (EC) and biodegradable polyhydroxybutyrate (PHB) biopolymer were used to fabricate drug-loaded nanofiber scaffolds using an electrospinning technique to overcome antibiotic overdose and insufficient efficacy of drug release during treatment.

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