Publications by authors named "Gueluemser Gedik"

This case report aims to demonstrate the use of amniotic membrane transplantation (AMT) as a treatment for a refractory full-thickness macular hole (FTMH) that developed secondary to neuroretinitis. A 14-year-old girl presented to our hospital with a complaint of blurred vision persisting for one week. The patient was diagnosed with neuroretinitis due to cat scratch disease with a FTMH that developed secondarily.

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This study was performed to compare the outcomes of adjunctive injections (injectable platelet-rich fibrin (iPRF), hyaluronic acid (HA)) and arthrocentesis only (AO) in the treatment of temporomandibular joint osteoarthritis. The study included 127 female patients (mean age 52.3 years).

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A new series of hydrazone derivatives () were prepared from a condensation reaction between different hydrazide derivatives and 3-formylbenzoic acid. Through the use of several spectral techniques, such as H-NMR, C-NMR, and elemental analysis, the structures of the compounds were clarified. The crystal structure of compound was obtained by single-crystal X-ray crystallography.

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One of the main difficulties in microplastic (MP) research is the lack of standardized, real-world methods such as matrix blank and simultaneous tracking of polymer particles for enumeration. Building on a previous study, a matrix preparation and experimental workflow for soil matrices is presented that addresses the challenges of purification to allow subsequent analysis using Nile Red-stained MPs as a surrogate. Key steps include peroxide digestion and density separation (NaI) followed by centrifugation for low density polyethylene (LDPE) and polyvinyl chloride (PVC) surrogates to assess recoveries in terms of number and size, based on fluorescence microscopy and Raman spectroscopy.

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The control of antiferromagnets with ultrashort optical pulses has emerged as a prominent field of research. Tailored laser excitation can launch coherent spin waves at terahertz frequencies, yet a comprehensive description of their generation mechanisms is still lacking despite extensive efforts. Using terahertz emission spectroscopy, we investigate the generation of a coherent magnon mode in the van der Waals antiferromagnet NiPS_{3} under a range of photoexcitation conditions.

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Introduction: This study compared two conventional smear methods during FNAB: The method where the green part of the syringe is touched to the slide (Technique 1) and the method where the contents are rapidly sprayed (Technique 2). We investigated differences in specimen adequacy, diagnostic outcomes, and variations among pathological subgroups.

Methods: FNAB was performed on 128 lesions from 119 patients, and the samples were classified according to the Bethesda System.

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Objectives: Diaphragma rupture is an insidious case following thoracoabdominal trauma with significant morbidity and mortality rates, if left untreated. Its symptoms might be masked by other associated injuries, which are often present, especially following blunt trauma. Modern imaging modalities might overlook a present diaphragmatic rupture.

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Objective: To evaluate the long-term outcomes of hepatitis delta patients, including cirrhosis and hepatocellular carcinoma (HCC), based on clinical and laboratory data.

Methodology: A retrospective evaluation was conducted on patients diagnosed with hepatitis delta. The patients were formed into four groups: no-treatment, pegylated interferon, oral antiviral, and combined treatment.

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Introduction: This study compares the period during which thromboembolic disease develops after contact with the virus before, during, and after the pandemic.

Methods: In this study, the medical records of patients with a preliminary diagnosis of myocardial infarction (MI), pulmonary embolism (PE), and ischemic stroke who presented to the Emergency Department before, during, and after the pandemic (when vaccination rates increased) were retrospectively examined. Data on whether these patients had COVID-19 or were vaccinated, the time interval between infection/vaccination and the onset of these conditions, and the prognosis were analyzed.

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: Community-acquired pneumonia is a major cause of morbidity and mortality, and various scoring systems and laboratory assessments are available for predicting prognosis. The untapped potential of combining the neutrophil/lymphocyte ratio (NLR) with the monocyte/lymphocyte ratio (MLR) and platelet/lymphocyte ratio (PLR) and their correlation with the pneumonia severity index (PSI) and CURB-65 motivated our research. We thought that this would provide more robust data for predicting CAP prognosis.

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Plastic pollution has become a serious environmental problem on a global scale. Microplastics (MP), in particular, pose a significant threat to marine ecosystems. This study assesses the abundance, distribution, and characteristics of microplastics (MP) present in the Sea of Marmara, where the specimens of selected mollusk (Ostrea edulis, Mytilus galloprovincialis, Rapana venosa), fish (Mugil cephalus, Pomatomus saltatrix), and sediment were investigated.

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Objectives: With rising cancer incidence rates and a growing migrant population in Europe, understanding oncologists' challenges in communication and providing cancer care to patients with a non-Western migration (NWM) background is crucial. This study aimed to explore the perspectives and experiences of oncologists, including those in training, as they interact with such patients about their cancer diagnosis, stage, treatment, and prognosis.

Methods: Between June and September 2023, an online survey was conducted among medical oncologists and trainees (MO) and pulmonologists and trainees (PO) from university medical centers or regional hospitals in the Netherlands.

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Article Synopsis
  • Impaired calcium (Ca) handling in heart cells is a key feature of heart failure (HF), leading to issues like weakened heart contractions and irregular heartbeats.
  • The study used transgenic mice with a mutation affecting a calcium regulator (phospholamban) to understand how defects in calcium cycling contribute to HF, noting that these mice experience severe and fast-progressing heart failure.
  • Early treatment aimed at correcting calcium cycling using Raf kinase inhibitor protein (RKIP) was found to delay heart cell damage and improve overall health of the mice, indicating that addressing Ca dynamics early on could be crucial for preventing further complications in heart failure.
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The pollution potential of a municipal wastewater treatment plant (WWTP) in Bursa, Türkiye, in terms of organochlorine pesticides (ΣOCPs), polychlorinated biphenyls (ΣPCBs), and polybrominated diphenyl ethers (ΣPBDEs), was investigated in air samples. Concentrations were determined using polyurethane foam disk samplers at key processes, such as the aeration tank (AT) and settling chamber (SC) of the WWTP and the background area (BA) at an urban site. Atmospheric concentration levels of PBDEs at the SC are 1.

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Ultrafast photoexcitation offers a novel approach to manipulating quantum materials. One of the long-standing goals in this field is to achieve optical control over topological properties. However, the impact on their electronic structures, which host gapless surface states, has yet to be directly observed.

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Lacosamide (LCM) selectively increases the slow inactivation of voltage-gated sodium channels (VGSCs) and is a N-methyl d-aspartate acid (NMDA) receptor glycine site antagonist. Therefore, it can be used in dryness-related hyperexcitability of corneal cold receptor nerve terminals. Ocular in-situ gels remain in liquid form until they reach the target site, where they undergo a sol-gel transformation in response to specific stimuli.

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Controlling the functional properties of quantum materials with light has emerged as a frontier of condensed-matter physics, leading to the discovery of various light-induced phases of matter, such as superconductivity, ferroelectricity, magnetism and charge density waves. However, in most cases, the photoinduced phases return to equilibrium on ultrafast timescales after the light is turned off, limiting their practical applications. Here we use intense terahertz pulses to induce a metastable magnetization with a remarkably long lifetime of more than 2.

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Inhalable micro(nano)plastics (MNPs) have emerged as a significant global concern due to their abundance and persistence in the atmosphere. Despite a growing body of literature addressing the analytical requirements of airborne MNPs, the issue of inhalable fractions and analysis of slotted substrates remains unclear. Therefore, the objective of this study is to perform a systematic particle-based analysis and characterization of inhalable microplastics (MPs) collected by a high-volume sampler equipped with a five-stage cascade impactor with a size range of 10 μm to <0.

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This study aims to investigate the effectiveness of lasers at various wavelengths in treating medication-related osteonecrosis of the jaw (MRONJ) using biochemical, clinical scoring, micro CT analysis, and histopathological methods. The study follows the ARRIVE guidelines to ensure robust and transparent research. In our study, there were 6 groups, including one SHAM group, one CONTROL group, and four experimental groups, with 8 rats in each individual group.

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Article Synopsis
  • The study assessed the effectiveness of using pectoralis major myocutaneous flaps (PMMF) to reconstruct mandibular defects, focusing on how success varied by defect location.
  • Data from 18 patients aged 28 to 82, treated from 2018 to 2021, were analyzed, revealing that Class I defects had a 100% success rate, while Class III defects had a lower rate of only 16.7% successful outcomes.
  • The findings suggest that the location and classification of the defects significantly impacted recovery, with Class III defects experiencing more complications likely due to reduced blood supply to the flaps.
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Background: Despite the development of novel therapeutic modalities, lung cancer persists as the leading cause of cancer-related mortality. Platinum-based treatments represent the most prominent treatment option, with cisplatin being the most frequently utilized chemotherapeutic agent. However, cisplatin has several serious side effects.

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Article Synopsis
  • The study compares ultrasound (USG)-guided corticosteroid injections to anatomic landmark-guided injections for treating greater trochanteric pain syndrome (GTPS), focusing on pain relief and functional improvement.
  • Results showed that USG injections provided greater initial improvements in pain and function, especially for patients with severe symptoms, but long-term outcomes were similar for both methods.
  • USG injections were also found to be more cost-effective for functional outcomes, highlighting the need for assessing long-term effectiveness when choosing treatment strategies for GTPS.
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Tau-fluvalinate is a type 2 pyrethroid insecticide. Diosmin and chrysin are flavonoids with antioxidant and anti-apoptotic effects. Role of diosmin and chrysin against infavorable toxic effects caused by tau-fluvalinate and the underlying mechanisms of these effects were investigated.

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Article Synopsis
  • Medication-related osteonecrosis of the jaw (MRONJ) is a serious issue linked to bisphosphonate use, causing bone death in the jaw area.
  • A 68-year-old woman with a cancer history faced complications after surgery for this condition, leading to the need for further reconstruction with a Limberg flap.
  • The surgery successfully healed her condition and emphasizes the need for customized treatment approaches for MRONJ, showcasing the effective use of the Limberg flap in such cases.
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In this study, the transported entropy of ions for 8YSZ and 10Sc1CeSZ electrolytes was experimentally determined to enable precise modeling of heat transport in solid oxide cells (SOCs). The Peltier coefficient, crucial for thermal management, was directly calculated, highlighting reversible heat transport effects in the cell. While data for 8YSZ are available in the literature, providing a basis for comparison, the results for 10Sc1CeSZ show slightly smaller Seebeck coefficients but higher transported ion entropies.

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