Publications by authors named "Guelnihal Kacar"

Article Synopsis
  • Silymarin, a flavonoid from milk thistle, shows promising effects like antioxidant and anti-inflammatory properties, particularly in cancer research.
  • In a study on SPC212 human mesothelioma cells, silymarin was found to have a dose-dependent cytotoxic effect, with a half-maximal inhibitory concentration (IC) of about 187.5 µM.
  • The compound induced signs of apoptosis, such as cell shrinkage and nuclear changes, suggesting its potential as an anti-cancer agent that needs further investigation.
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  • The study investigates the effectiveness of syndromic tests for diagnosing central nervous system (CNS) infections in children, highlighting the urgency of timely diagnosis.
  • A total of 145 pediatric patients were analyzed, revealing that viral pathogens were the most common cause of CNS infections among those tested, with bacterial and no fungal infections detected.
  • The use of syndromic tests significantly reduced diagnostic turnaround time, which averaged around 2 hours, and aided in guiding appropriate treatment for affected children.
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Peripartum cardiomyopathy (PPCM) is a rare, but serious condition, with a non-negligible risk of adverse events. Several risk factors for PPCM have been individuated over the years, including Afro-American ethnicity, preeclampsia, advanced maternal age, genetic predisposition, multiparity, twin pregnancy, obesity, smoking and diabetes. However, PPCM pathophysiology is still poorly understood, thus making it challenging to develop disease specific therapies.

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Vaspin plays a regulatory role in lipid and glucose metabolism and is a therapeutic adipokine against impaired glucose intolerance in obese individuals. We aimed to investigate serum vaspin levels in patients with FMS and whether there was any relationship between vaspin levels and metabolic and clinical parameters in fibromyalgia. A total of 64 female patients who applied to an outpatient clinic due to widespread pain lasting more than three months were included in the study.

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B-cell depleting therapy (BCDT) has revolutionised the treatment of B-cell malignancies and autoimmune diseases by targeting specific B-cell surface antigens, receptors, ligands, and signalling pathways. This narrative review explores the mechanisms, applications, and complications of BCDT, focusing on the therapeutic advancements since the introduction of rituximab in 1997. Various monoclonal antibodies and kinase inhibitors are examined for their roles in depleting B cells through antibody-dependent and independent mechanisms.

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Unlabelled: Infectious gastroenteritis is an important cause of morbidity and mortality, especially in nations with middle and low incomes. In a pediatric gastroenteritis patient, the aim was to determine the therapeutic impact of using the Gastrointestinal Panel in our clinical practice. A single-center retrospective study was designed to evaluate children who were admitted to the hospital for gastroenteritis and had a gastrointestinal panel between August 2021 and January 2024.

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Objectives: There is dearth of data on long-term outcomes of systemic semilunar (SS) or atrioventricular (AV) valve operation in adult patients with a Fontan circulation. We describe a single-centre experience of adults who underwent valve surgery late after a Fontan procedure.

Methods: We retrospectively reviewed all patients with a Fontan circulation who had a reoperation for severe valve disease during adulthood in our centre.

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We propose a new bootloader design with dynamic boot addressing to increase the endurance of microcontroller flash memories and to use flash memory efficiently. Although the final industrial products are not updated much, regular programming during the development and testing phase inefficiently reduces the endurance of flash memory. Especially after the pandemic, the problems experienced in the production/supply processes of products using semiconductor technology and the highly extended deadlines have inspired our work to extend the life of the products used in the development and testing phase.

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Since the first successful use of cardiopulmonary bypass (CPB), much has changed in its technology, area of use, and management. Despite suggestions in guidelines, the institutional behavior may change based on institutional experience and established habits. This so-called "deviation" may alter management strategies in favorable or unfavorable ways.

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Kisspeptins are reported to be the most potent activators of the hypothalamus-pituitary-gonadal (HPG) axis known to date. Kisspeptin potently elicits gonadotropin-releasing hormone (GnRH) release and luteinizing hormone (LH) secretion, even in the pre-pubertal period. Beyond the hypothalamus, kisspeptin is also expressed in limbic and paralimbic brain regions, which are areas of the neurobiological network primarily implicated in emotional behaviors alongside sexual functions.

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Article Synopsis
  • - Tissue nanotransfection (TNT) uses plasmids (Etv2, Foxc2, and Fli1) to enhance the formation of vasculogenic fibroblasts (VF) in ischemic skin of mice, promoting new blood vessel growth.
  • - In vitro studies show that human dermal fibroblasts exhibit increased endothelial gene expression upon EFF nanoelectroporation, with a link to higher ten-eleven translocase (TET) expression.
  • - The study demonstrates that TET activation is crucial for VF development in diabetic ischemic limbs, facilitating blood flow restoration and improved wound healing, especially since TET levels are usually lower in diabetic conditions.
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Acute pancreatitis (AP) is a clinical condition that arises acutely in the pancreas through various inflammatory pathways due to multiple causes. Turkish Society of Gastroenterology Pancreas Working Group developed comprehensive guidance statements regarding the management of AP that include its epidemiology, etiology, clinical presentation, diagnostic criteria, disease severity, treatment, prognosis, local and systemic complications. The statements were developed through literature review, deliberation, and consensus opinion.

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Introduction: The natural history, the progression of a disease process in an individual over time, has not yet been fully elucidated in hidradenitis suppurativa (HS). In this large multicenter study, we aimed to investigate the natural history of HS and its gender differences.

Methods: This cross sectional study included 827 patients.

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Acrylamide is broadly utilized in numerous areas with different purposes including being an additive, flocculating, sealing, dry strength improver and polymerizing agent, and so forth. Furthermore, it forms in certain food products at high temperatures. It poses serious hazard since its readily water-soluble and very reactive nature.

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Gas chromatography (GC) was used to determine the fatty acid (FA) compositions of total lipid, phospholipid (PL), phospholipid subclass (phosphatidylcholine (PC), phosphatidylinositol (PI), phosphatidylserine (PS), phosphatidylethanolamine (PE)), and TAG (triacylglycerol) fractions in male Chondrostoma regium. Percentages of myristic acid (14:0), palmitoleic acid (16:1n-7), oleic acid (18:1n-9), monounsaturated fatty acid (ΣMUFA), linoleic acid (18:2n-6) and linolenic acid (18:3n-3) were found to be higher in TAG than the values determined in PL classes. Palmitic acid (16:0), eicosapentaenoic acid (EPA, 20:5n-3), docosahexaenoic acid (DHA, 20:6n-3) in the PC fraction; 16:0, 20:5n-3, 22:6n-3 in PE; 16:0, stearic acid (18:0), arachidonic acid (AA, 20:4n-6), 20:5n-3, 22:6n-3 in PI; and 16:0, 18:0, oleic acid (18:1n- 9), 22:6n-3 in PS were found to be dominant.

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As patients with congenital heart disease (CHD) continue to enjoy longer lives, non-congenital cardiologists and other healthcare professionals are increasingly encountering them in their practice and are challenged by their specific needs. Most under- and post-graduate medical training tends to overlook this common pathology, resulting in insufficient awareness of post-repair or post-palliation residual lesions and sequelae from previous interventions. In a strive towards improving the quality of care for this ever-growing cardiovascular patient cohort, it is prudent to outline the areas of concern and specific management needs pertaining to adult patients with CHD and share it with non-CHD professionals.

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Background: Corroborating evidence for use of hypothermic oxygenated machine perfusion (HOPE) prior to orthotopic liver transplantation (OLT) suggests a beneficial effect in regards to biliary complications. Here, we aim to evaluate whether perfusion via portal vein alone (sHOPE) or via additional perfusion of the hepatic artery (dHOPE) have diverging impact on outcomes after OLT when compared to use of static cold storage (SCS).

Methods: Consecutive patients undergoing OLT at Medical University of Vienna (2018 to 2023) were retrospectively analyzed.

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Article Synopsis
  • Nail biting is a common habit that can lead to health risks, particularly for individuals with congenital heart disease (CHD), who are more susceptible to infections like endocarditis.
  • In a study of 310 adult CHD patients, 33% reported nail biting, with factors such as younger age, male gender, higher complexity of CHD, and learning disabilities being linked to this behavior.
  • The findings suggest that nail biting is prevalent among specific groups, indicating a need for lifestyle education and interventions to mitigate potential health risks in this patient population.
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  • During the COVID-19 pandemic lockdown, the study assessed respiratory viral infections in children with cancer, highlighting their clinical impact.
  • Of the 265 episodes evaluated, human rhinovirus/enterovirus was the most common pathogen identified, with significant complications noted, including a higher rate of lower respiratory tract infections.
  • The findings emphasize the necessity for quicker detection and treatment of respiratory viruses to prevent severe outcomes in this vulnerable population.
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Objective: Transthoracic echocardiography is the gold standard method for screening and confirmation of acute rheumatic fever and subclinical rheumatic heart disease. Secondary antibiotic prophylaxis that is regularly employed in subclinical rheumatic heart disease may help to reverse mild rheumatic carditis lesions, delay the progression of the disease, reduce morbidity and mortality, and improve patients' quality of life.

Materials And Methods: We retrospectively evaluated the outcomes of 180 patients with subclinical rheumatic heart disease who were followed up for a mean of 4.

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The present research was an examination of the concentration levels of 10 metal(loid)s that had accumulated in the muscle, gills, and liver tissues of Carassius gibelio (Prussian carp) fish. The fish species, used as samples in the study, were obtained from the part of the river in Gülşehir (Türkiye). Besides, possible health risks to consumers were specified based on the daily estimated intake (EDI) of metal(loid)s in adults.

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Background: Oral isotretinoin is the most effective systemic treatment for acne patients who fail to respond to other forms of therapies. However, hesitations and concerns regarding its side effect profile may detain the patients from treatment. This study aimed to develop and validate the Isotretinoin Hesitancy Scale (IHS) among acne patients.

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Introduction: Port catheters facilitate the administration of chemotherapy, antibiotics, blood products, fluid, and parenteral nutrition to pediatric patients with hematological malignancies. However, as its use has become widespread, local and systemic, catheter-related infections have emerged as important causes of morbidity and mortality. In our study, we aimed to evaluate the success of antibiotic lock therapy in port catheter-related infections of pediatric patients followed up with acute leukemia.

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This study was carried out in a descriptive and cross-sectional design in order to examine the cyberbullying experiences of individuals using social media. This descriptive study was conducted online between June 16, 2022, and August 16, 2022, in Turkey. The data collection process was completed with 471 participants.

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Background: Higher age is associated with less inflammatory disease activity in relapsing-remitting multiple sclerosis (RRMS). It is unknown whether age itself or disease duration underlies this association.

Objectives: This study investigated the effects of age, disease duration, and inflammatory disease activity in people with RRMS.

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