Publications by authors named "Ismail Yılmaz"

A novel probe NIR8 decorated with colorimetric, fluorometric, turn-on, and NIR properties was designed and synthesized using the chromenylium-cyanine platform for sensitive and selective quantification of Hg in real samples. The interaction between the probe and Hg resulted in the opening of the closed spirolactam ring of the chromenylium-cyanine platform, leading to a notable color shift from yellow to green. Concurrently, ratiometric spectral changes at 380 and 725 nm for UV-Vis and signal enhancement at 755 nm for fluorescence were observed.

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Purpose: Adult granulosa cell tumors (aGCTs) are a rare type of ovarian malignancy. While most aGCTs have an indolent course, up to 25% experience recurrence. Identifying markers for disease recurrence is crucial for optimal management.

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Extracellular vesicles (EVs), secreted by almost all living cells, have gained significant attention for their role in intercellular communication and their potential as versatile carriers for biotherapeutics. However, the clinical translation of EV-based therapies faces significant challenges, primarily due to the lack of efficient methods for loading biotherapeutic agents into EVs. This study introduces a simple, reproducible strategy for the simultaneous incorporation of various biotherapeutics within EVs.

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MiRNAs have been reported as biomarkers with diagnostic, prognostic, and predictive value for many different diseases. Therapeutic agents targeting some miRNAs are currently being developed. We aimed to compare BC-NEFs (carcinoma of the breast with neuroendocrine features) with IDC (invasive ductal carcinoma) cases without neuroendocrine features in terms of the level of miRNA expression known to show the oncogenic (miR-21) and tumor-suppressor effects (miR-let7f) and the clinicopathological features.

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We hereby report a patient with ALK-positive histiocytosis with localized lung involvement. A 47-year-old woman presented with a solitary pulmonary nodule in the left upper lobe, 7 months after COVID infection. A well-defined 15 mm yellow mass was found in trisegmentectomy specimen.

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Objectives: The study is aimed to investigate the association between different corticosteroid treatment regimens and clinical status, complications, mechanical ventilation requirement, and intensive care unit (ICU) mortality in individuals diagnosed with Coronavirus Disease of 2019 (COVID-19).

Materials And Methods: This is a descriptive retrospective study. Patients admitted to the ICU for COVID-19 and treated with low- or medium-dose corticosteroid therapy (methylprednisolone at a dose of 0.

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This study aims to investigate the factors effective in predicting the persistence of reflux after the first subureteric transurethral injection (STING) of dextranomer/hyaluronic acid copolymer in pediatric patients with vesicoureteral reflux. The data of patients without a previous history of surgery to treat vesicoureteral reflux and who underwent STING for the first time between September 2011 and November 2020 were investigated retrospectively. After considering exclusion criteria, of 199 patients, 127 patients and 180 renal units were suitable for inclusion.

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Aim: Dedifferentiated endometrial adenocarcinoma (DEAC) is a rare, aggressive subtype, accounting for 2% of all endometrial cancers. Poor survival in DEAC prompts the need for effective treatment modalities through better prognostic classification. MicroRNAs (miRNA) have essential roles in tumor angiogenesis, which might enable their use as novel biomarkers.

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Assessing the effectiveness of transseptal suturing septoplasty in elderly individuals. The method used in this study involved the prospective separation of septoplasty candidates over 65 into 2 groups. The first group underwent nasal packing, while the transseptal suture technique was used on the second group.

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Article Synopsis
  • Recent analytical methods challenge the earlier belief that L. castanea is always toxic, indicating variations in toxin levels based on location and climate.
  • A study conducted in different regions of Turkiye found L. castanea mushrooms to be free of amatoxin and phallotoxin, suggesting the need for further research in various geographical areas to confirm these findings.
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Background: Stathmin is a phosphoprotein that plays a role in intercellular and intracellular signaling, inflammation, and differentiation. Our aim was to evaluate the stathmin-2 level and its relationship with the metabolic parameters of newly diagnosed type 2 diabetes mellitus (nT2DM) patients.

Material And Method: This case-control study included 76 patients with nT2DM and 76 healthy individuals with a normal oral glucose tolerance test who were matched for body mass index (BMI), age, and gender.

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Article Synopsis
  • This study investigated whether serum histone H4 could serve as a diagnostic and prognostic marker for ulcerative colitis by comparing levels in patients and healthy controls.
  • Researchers found that serum histone H4 levels were significantly lower in ulcerative colitis patients compared to healthy individuals, indicating potential diagnostic value with a sensitivity of 72.4% and specificity of 88.9%.
  • However, no correlation was found between serum histone H4 levels and various disease-related measures in patients, suggesting that while it may aid in diagnosis, further research is needed to understand its role in disease progression.
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Background: In this study, we aimed to compare the operative outcomes, postoperative outcomes, stone-free status and complications of SPCNL and MPCNL in infants younger than two years of age.

Methods: We retrospectively analyzed 163 patients younger than two years of age who underwent percutaneous nephrolithotomy (PCNL) in our institution between September 1999 and March 2022. The patients were divided into two groups depending on the tract size.

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Background: Epiregulin is a molecule that plays a role in cell proliferation, tumor development, inflammation, and angiogenesis in malignant diseases.

Aim: Our study aims to reveal, for the first time, the predictive value of this molecule in non-Hodgkin lymphoma (NHL) and its association with disease stage, cell type, and extranodal involvement.

Methods: The study is an observational case-control trial involving 60 newly diagnosed NHL patients and 60 healthy individuals (control group) between 18 and 75 years old.

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Easy-to-synthesize aminoquinoline (AQ) appended naphthoquinone (NQ)-based colorimetric and ratiometric probe (AQNQ) was successfully synthesized in one step with high yield and low cost, and was utilized to supply an effective solution to critical shortcomings encountered in Cu analysis. The structure of AQNQ and its interaction with Cu forming an unusual AQNQ-Cu complex were enlightened with single-crystal X-ray diffraction analysis and different spectroscopic methods. AQNQ-Cu complex is the first Cu containing dinuclear crystal where the octahedral coordination sphere is fulfilled through the coordination of a NQ oxygen atom.

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Objective: Appendiceal neoplasms (ANs) are rare tumors that are often discovered incidentally during histopathological examinations. The increasing incidence of ANs is a critical issue in the non-operative management of acute appendicitis. This study aimed to document the temporal trends over a 12-year period by analyzing the clinical presentation, imaging findings, and histopathological features of ANs.

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Background: Wilms tumor is the most common cancer of the kidney that occurs during childhood, and histologically, it mimics renal embryogenesis. With the development and improvement of up-to-date treatment protocols, the survival rates of Wilms tumor have increased. However, metastases or local relapses are still observed in 15% of patients.

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Progress in the field of pediatric thyroid pathology has linked DICER1 mutations to benign follicular cell-derived thyroid tumors (e.g., follicular adenoma with papillary architecture, follicular nodular disease), low-risk follicular cell-derived differentiated thyroid carcinomas and PDTCs enriched in fatal or recurrent/progressive disease.

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Background/aim: Gastric carcinoma (GC) is a highly heterogeneous disease with many subtypes that have different morphologic and molecular characteristics. In the current study, we analyzed immunohistochemical (IHC) and in situ hybridization (ISH) features of GCs and evaluated their association with prognosis and clinicopathological features.

Materials And Methods: Three hundred cases analyzed by IHC and ISH for microsatellite stability, p53, e-cadherin, HER2, PD-L1 expression, and Epstein-Barr virus (EBV) status.

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Background: Type 2 diabetes mellitus (T2DM) is a chronic metabolic disorder that affects the processing of carbohydrates, proteins, and lipids. In T2DM, metabolic dysregulation occurs through various pathways caused by increased levels of many adipokines and inflammatory chemokines. Impaired insulin-glucose metabolism occurs in tissues.

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Background: Nausea and vomiting are among the most common medical problems during pregnancy, affecting 80% of mothers.

Objectives: This study was conducted as a randomized controlled experimental study to determine the effect of acupressure applied by a wristband to the pericardium 6 (PC6) point on nausea and vomiting during pregnancy.

Methods: The study population consisted of 74 pregnant women between 6-14 weeks of gestation who were experiencing nausea and vomiting.

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Detection of bisulfite (HSO) in food and beverages has vital importance because the excessive amount leads to ill effects on the human body. Colorimetric and fluorometric chromenylium-cyanine-based chemosensor CyR was synthesized and applied for high selective and sensitive analysis of HSO in red wine, rose wine and, granulated sugar with high recovery ranges and very fast response time without any interference from other competitive species. The limits of detection (LOD) for the UV-Vis and fluorescence titrations were found as 11.

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A new near-infrared, spectrophotometric, and colorimetric probe based on a phthalocyanine-containing mercaptoquinoline unit (MQZnPc) has been constructed and utilized for discriminative and highly selective/sensitive detection of Ag, Cu, and Hg ions by using proper masking agents like EDTA, KI, and NaCl. The probe only responds to Ag, Cu, and Hg among the tested ions without any interference. The probe performs quite well (the limit of detection: 160 ppb, 148 ppb, and 276 ppb of Ag, Cu, and Hgions for UV-Vis, and 15 ppb, 37 ppb, and 467 ppb of Ag, Cu, and Hg ions for fluorescence, respectively), and has a fast response time (150 sec, 90 sec, and 90 sec of Ag, Cu, and Hgions for UV-Vis, and 300 sec, 240 sec, and 90 sec Ag, Cu, and Hgions for fluorescence, respectively).

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The objective of the study is, for the first time, to construct a new near infrared (NIR) fluorophore, spectrophotometric, colorimetric, ratiometric, and turn-on probe (CSME) based on chromenylium cyanine platform decorated with methionine biomolecule to provide an efficient solution for critical shortcoming to be encountered for analysis of hazardous Hg in environment and living cell. The CSME structure and its interaction with Hg ion were evaluated by NMR, FTIR, MS, UV-Vis and fluorescence methods as well as Density Functional Theory (DFT) calculations. The none fluorescence CSME having spirolactam ring only interacted with Hg in aqueous solution including competing ions.

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Homeostatic restoration of an inflammatory response requires quenching of the immune system after pathogen threats vanish. A continued assault orchestrated by host defense results in tissue destruction or autoimmunity. A151 is the epitome of synthetic oligodeoxynucleotides (ODNs) that curb the immune response by a subset of white corpuscles through repetitive telomere-derived TTAGGG sequences.

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