Publications by authors named "Gueher Bolat"

Tau pathology in sporadic Alzheimer's disease (AD) follows a distinct pattern, beginning in the entorhinal cortex (ERC) and spreading to interconnected brain regions. Early-stage tau pathology, characterized by soluble phosphorylated tau, is difficult to study in human brains post-mortem due to rapid dephosphorylation. Rhesus macaques, which naturally develop age-related tau pathology resembling human AD, provide an ideal model for investigating early tau etiology.

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In the present work, solvent casting and Pickering emulsion methods are studied to enhance the mechanical properties of polylactic acid (PLA) composites containing surface-modified cellulose nanomaterials. To enhance the compatibility and the adhesion at the interface, cellulose nanocrystal (CNC) was functionalized by 2,4-methylene diphenyl diisocyanate (MDI) and castor oil. Their results demonstrated that the Pickering emulsion method led to better dispersion of CNC in composites, resulting in improved tensile strength, flexibility, and thermal stability (compared with solvent-casted ones).

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Objective: To investigate whether the timing of bacillus Calmette-Guerin instillation (TTBCG), which plays a key role in treating non-muscle invasive bladder cancer (NMIBC), after transurethral resection of bladder tumor (TURBT) affects oncologic outcomes.

Methods: Patient data obtained from the Urologic Cancer Database-Bladder (UroCaD-B) of Turkish Uro-oncology Association (TUOA) were evaluated. Data from 292 patients from 12 centers with primary T1HG treated with TURBT and maintenance BCG between 2003 and 2023 were retrospectively analyzed.

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Leptospirosis is a prevalent zoonotic disease in dogs. Although it is known that leptospires are primarily harboured in kidney tissues of dogs, it has been reported that they also infect testicular tissue. Leptospira interrogans causes various lesions in canine testicular tissues; however, the pathogenesis has not been clearly explained.

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Nowadays, many forests are intensely exposed to the adverse effects of climate change such as drought. To increase the resilience of the forests against climate change, prescribing appropriate silvicultural treatments is of great importance. At this point, closely scrutinizing the simultaneous effects of competition and climate on the forests has become a very important issue.

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Leptospirosis is major zoonotic disease with global implications, affecting both domestic animals and humans. It is caused by Leptospira interrogans (L. interrogans), which can damage multiple organs, including the kidneys, liver, testes, and uterus.

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Objective: Although autogenous grafting is accepted as the gold standard in intraoral grafting, xenogenous grafts are frequently used in sinus lift surgeries due to their osteoinductive and osteoconductive properties. This study aimed to investigate the efficacy of fish spine-derived xenogenic grafts in sinus augmentation surgery.

Material And Methods: In this study, a fish spine-derived xenogenic graft was produced for comparison with autogenous graft and bovine derived xenogenic grafts.

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This study aimed to report a tularemia outbreak in Sivas and describe the epidemiological and diagnostic characteristics of the patients. Patients aged 18 and over followed up with a diagnosis of tularemia in Sivas Cumhuriyet University Hospital, Sivas Numune State Hospital, and Sivas State Hospital Infectious Diseases Outpatient Clinics and wards between November 2023 and May 2024 were evaluated. 205 adult patients with tularemia were included.

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Real service requirements of the assembly performance and joining properties of design components are critical for composite usage in the aerospace industry. This experimental study offers a novel and comprehensive analysis of dry drilling optimization for glass-reinforced, high-performance epoxy matrix composites used in aerospace structures, focusing on thrust force and delamination. The study presents a first-time investigation into the combined effects of spindle speed (1000, 2250, 4000 and 5750 rpm), feed rate (0.

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Therapeutic approaches based on isolated compounds derived from natural products are more common in preventing diseases involving inflammation and oxidative stress at present. S-allyl cysteine (SAC) is a promising garlic-derived organosulfur compound with many positive effects in cell models and living systems. SAC has biological activity in various fields, enclosing healing in learning and memory disorders, neurotrophic effects, and antioxidant activity.

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Introduction: This retrospective, cross-sectional, multi-center study aimed to evaluate the impact of laboratory results and treatments on the treatment response in patients diagnosed with tularemia.

Methods: The study included 190 adult patients diagnosed with tularemia between November 2023 and June 2024.

Results: 67.

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Breast cancer is one of the most common cancers and a significant cause of death in females worldwide. For effective breast cancer treatment, using systems with a promising delivery of anticancer agents is an important strategy. Peptide 18 (P18), a tumor-homing peptide, shows a high binding affinity toward breast cancer cells.

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Brunner syndrome is a rare genetic disorder that associated with mutations in the MAOA gene. It has been linked to a number of psychiatric disorders. We present detailed information on psychiatric evaluation of a case carrying a novel MAOA gene variant of p.

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Pancreatic cancer is a global health problem with a poor prognosis, limited treatment options and low survival rates of patients. Thus, the exploration of novel treatment approaches is crucial. Curcumin shows promise in pancreatic cancer.

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Article Synopsis
  • * Results indicated that certain tests, particularly cardiac biomarkers, blood gases, and specific drug levels, were perceived to pose a higher risk for patient harm due to erroneous results.
  • * There was strong agreement (91%) between medical biochemists and clinicians regarding the severity scores, highlighting the tests that require focused quality improvement efforts.
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  • The study focuses on struma ovarii (SO), a rare ovarian tumor that features thyroid tissue within a teratoma, aiming to enhance the treatment approach based on the authors' clinical experience with 19 patients over ten years.
  • Patients aged 17 and older with histopathologically confirmed SO were analyzed for demographic data, tumor characteristics, treatments, and follow-up, revealing that three cases were malignant while the rest were benign.
  • The authors conclude that while benign cases can be treated conservatively, malignant struma ovarii management is more complex, suggesting that young women might benefit from fertility-sparing options combined with further thyroid treatment.
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  • - Cohen syndrome is a rare genetic disorder characterized by intellectual disability, neutropenia (low white blood cell count), and recurrent infections, primarily caused by mutations in the VPS13B gene.
  • - The study analyzed three cases of Cohen syndrome diagnosed through genetic testing, highlighting varying symptoms based on age, but noting similarities in symptoms like hypotonia, swallowing difficulties, and developmental delays.
  • - Early recognition of symptoms such as recurrent infections and hypotonia is crucial for timely diagnosis and genetic counseling in patients suspected to have Cohen syndrome.
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The element boron forms a wide range of borate minerals with different properties. Borate minerals make it possible to design boron-containing molecules with new biological properties in terms of their chemical structure and properties. It is known that boron compounds have antioxidant, anti-inflammatory, anti-tumor and anti-cancer properties.

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  • The study aimed to evaluate factors impacting cancer-specific survival (CSS) in muscle-invasive bladder cancer (MIBC) patients who did not respond to neoadjuvant chemotherapy (NAC) before undergoing radical cystectomy (RC).
  • Researchers examined various clinical and pathological characteristics, comparing NAC-responsive and NAC-non-responsive patients, focusing on data from 92 male-dominant participants averaging 61.5 years in age.
  • Results indicated that while factors like a higher ECOG score and fewer NAC cycles correlated with non-responsiveness, the only significant prognostic factor for CSS in non-responsive patients was the presence of ypN+ status.
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  • Post-operative intra-abdominal adhesions can seriously affect testicular tissue and are a common complication of laparoscopic surgery; this study explored how boric acid might prevent these adhesions.
  • The research involved 40 rats divided into four groups, with results showing that those treated with boric acid had significantly lower adhesion scores compared to the control group post-surgery.
  • Treatment with boric acid not only reduced adhesion severity but also helped normalize levels of various biochemical and inflammatory markers in testicular tissues, indicating its potential as an effective anti-adhesive agent.
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Background: One of the most popular chemotherapy medications is doxorubicin (DOX), however it can have non-negligible damage. When the underlying mechanisms of damage are investigated, the most prominent pathways are oxidative stress, inflammation and apoptosis.

Aim: We investigated the NF-κB/MAPK inflammatory pathway and cellular apoptosis to determine the efficacy of trigonelline alkaloid (TRIG) in preventing DOX-induced lung injury.

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Purpose: Adipose tissue has an important endocrine function by secreting a variety of hormones known as adipokines, such as Visfatin, Omentin-1 and Chemerin. On the other hand, these hormones are also secreted from places other than fatty tissues in the girl's genital system. The goal of this study was to demonstrate the secretory status of adipokines in patients with central precocious puberty (CPP) and their utility in the diagnosis of precocious puberty.

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Background: The early detection of myeloid engraftment after hematopoietic stem cell transplantation (HSCT) is of clinical importance for clinicians. In this study, we evaluated whether serum lactic dehydrogenase enzyme levels are significant predictors in the early detection of successful myeloid engraftment after HSCT.

Methods: The study included 74 patients, all of whom underwent HSCT between February 2014 and June 2020.

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  • Valproic acid (VPA) is an effective antiepileptic medication but can also cause toxic effects on brain, kidney, and liver tissues due to oxidative stress and inflammation.
  • Curcumin, a natural antioxidant found in ginger, exhibits antibacterial and anti-inflammatory properties and was tested for its protective effects against VPA toxicity in a study involving male Wistar-Albino rats.
  • Results showed that curcumin could effectively reduce the oxidative stress and inflammation caused by VPA, suggesting it may help mitigate the side effects of this drug in patients who use it for epilepsy.
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Although several porous carbon/graphene nanoribbons (GNRs) have been prepared, a direct comparison of the electronic properties between a nonporous GNR and its periodically perforated counterpart is still missing. Here, we report the synthesis of porous 12-atom-wide armchair-edged GNRs from a bromoarene precursor on a Au(111) surface via hierarchical Ullmann and dehydrogenative coupling. The selective formation of porous 12-GNRs was achieved through thermodynamic and kinetic reaction control combined with tailored precursor design.

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