Publications by authors named "Muezeyyen Ay"

Aim: The aim of this study is to assess associated cerebral supratentorial anomalies in patients who underwent myelomeningocele repair in hopes of developing a better morphological apprehension of the forebrain's anomalies in this category of patients.

Material And Methods: This retrospective observational study assessed 426 pediatric patients who underwent myelomeningocele repair between January 2013 and December 2020. Cranial MRIs with T1- and T2-weighted sequences were obtained as part of the postoperative assessment to determine the presence of associated supratentorial anomalies in pediatric patients following myelomeningocele repair.

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Background:  The benefits and risks of extending anticoagulant treatment beyond the first 3 to 6 months in patients with venous thromboembolism (VTE) in clinical practice are not well understood.

Methods:  ETNA-VTE Europe is a prospective, noninterventional, post-authorization study in unselected patients with VTE treated with edoxaban in eight European countries for up to 18 months. Recurrent VTE, major bleeding, and all-cause death were the primary study outcomes.

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An animal's body mass is said to be indirectly related to its rate of heat loss; that is, smaller animals with higher surface area to volume tend to lose heat faster than larger animals. Thus, thermoregulation should be related to body size, however, generalizable patterns are still unclear. Domestic dogs are a diverse species of endothermic mammals, including a 44-fold difference in body size.

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Introduction: Factor XI/XIa (FXI/XIa) has emerged as a potential target for antithrombotic therapy, driven by preclinical evidence showing the role of FXI/XIa inhibition for preventing thrombosis without impeding hemostasis. This is particularly promising for patients at high risk of both thromboembolic events and bleeding, such as patients with end-stage kidney disease (ESKD) on hemodialysis (HD).

Methods: We systematically searched Embase, MEDLINE, and ClinicalTrials.

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Introduction: Advances in neonatal and pediatric intensive care have improved patient survival rates, emphasizing the need for respiratory support in cases of chronic respiratory failure, resulting in the establishment of the Turkish National Pediatric Patients Receiving Home Mechanical Ventilation (HMV) Support Registration System in 2023. This study aims to present the initial findings of the registry.

Methods: In this cross-sectional study, epidemiological and demographic data was obtained from the registry and compared between invasive ventilation (IV) and non-invasive ventilation (NIV) groups.

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Background: Patients with cancer treated with immune-checkpoint inhibitors (ICIs) have a substantial risk of venous thromboembolism (VTE). The association between ICI-induced inflammation and hypercoagulability is unclear, and no biomarkers currently exist to stratify VTE risk.

Objectives: The authors sought to determine the association between the early changes in C-reactive protein (CRP) after ICI initiation and the risk of VTE.

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Summary: With the increased reliance on multi-omics data for bulk and single cell analyses, the availability of robust approaches to perform unsupervised learning for clustering, visualization, and feature selection is imperative. We introduce nipalsMCIA, an implementation of multiple co-inertia analysis (MCIA) for joint dimensionality reduction that solves the objective function using an extension to Non-linear Iterative Partial Least Squares (NIPALS). We applied nipalsMCIA to both bulk and single cell datasets and observed significant speed-up over other implementations for data with a large sample size and/or feature dimension.

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Article Synopsis
  • - The study investigated how nurses' lifelong learning impacts their digital literacy and online information search strategies at a hospital in Istanbul, involving 302 participants.
  • - Results showed a positive correlation between higher lifelong learning and improved digital literacy as well as better web-based information search and interpretation skills among nurses.
  • - Nurses aged 31 and older exhibited high lifelong learning and digital literacy levels, indicating that their ongoing education enhances their ability to find and interpret information from professional online sources.
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Cold isostatic pressing, gel casting, and protein coagulation are the most common techniques to produce green bodies prior to computer numerical control (CNC)-based machining for the near-net-scale shaping of ceramics. These methods typically involve various additives and entail several steps to create a green body that is capable of withstanding machining forces. Here, utilizing a single additive, we first introduced a facile benchtop method to generate self-standing, malleable doughs of alumina in under 2 min.

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The increasingly widespread application of next-generation sequencing (NGS) in clinical diagnostics and epidemiological research has generated a demand for robust, fast, automated, and user-friendly bioinformatics workflows. To guide the choice of tools for the assembly of full-length viral genomes from NGS datasets, we assessed the performance and applicability of four open-source bioinformatics pipelines (shiver-for which we created a user-friendly Dockerized version, referred to as dshiver; SmaltAlign; viral-ngs; and V-pipe) using both simulated and real-world HIV-1 paired-end short-read datasets and default settings. All four pipelines produced consensus genome assemblies with high quality metrics (genome fraction recovery, mismatch and indel rates, variant calling F1 scores) when the reference sequence used for assembly had high similarity to the analyzed sample.

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Background/objectives: The circadian clockwork is implicated in the etiology of addiction, with circadian rhythm disruptions bidirectionally linked to substance abuse, but the molecular mechanisms that underlie this connection are not well known.

Methods: Here, we use machine learning to reveal sex- and substance-specific associations with addiction in variants from 51 circadian-related genes (156,702 SNPs) in 98,800 participants from a UK Biobank cohort. We further analyze SNP associations in a subset of the cohort for substance-specific addictions (alcohol, illicit drugs (narcotics), and prescription drugs (opioids)).

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Objective: Despite several surgical options, there has yet to be a consensus on the best treatment for femoral neck fracture (FNF) due to higher complication rates compared to other bone fractures. This study aims to examine the possible consequences and solution suggestions of changing screws during surgery for various reasons in FNF surgical treatment from a biomechanical perspective.

Method: FNF and treatment materials were analyzed biomechanically using a package program based on the finite element method (FEM).

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Objective: The study was conducted to determine the effect of emotional freedom techniques (EFT) on the severity of premenstrual syndrome (PMS).

Methods: The study was conducted as a randomized controlled trial, with a premenstrual syndrome sample comprising 78 single female students of reproductive age presenting with PMS complaints (40 in the experimental group and 38 in the control group). Students in the experimental group were interviewed individually in the week before their menstrual cycle and received two EFT sessions with a 3-day interval.

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Objective: Pediatric oncology nursing is a challenging and emotionally exhausting profession. Understanding the challenges and struggles faced by pediatric oncology nurses can help to create targeted interventions that will improve their well-being and enhance the quality of care for children with cancer and their families. This study aimed to explore the challenges and struggles nurses face in their daily care practices.

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Article Synopsis
  • The study investigates the high prevalence of pain in Parkinson's disease (PD) patients, with 80.6% reporting pain, indicating its significant impact on quality of life.
  • It distinguishes between neuropathic pain (NP) and musculoskeletal pain, finding that longer disease duration predicts NP and that females experience more musculoskeletal pain.
  • The research highlights the correlation between anxiety and central parkinsonian pain and suggests further exploration of amantadine's potential benefits in managing pain, emphasizing the need for personalized treatment approaches in PD.
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Background: Previous studies indicate an increasing prevalence of depression among university students worldwide. Besides, university students are more likely to excessively use smartphones, making them more susceptible to smartphone addiction. Pandemic conditions can also have negative effects on mental health.

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Organ transplantation practices have witnessed tremendous advances all over the world and in Türkiye in recent years, and the pre-transplantation preparation, operation and postoperative follow-up procedures are being meticulously handled. However, there is very limited information about follow-up processes of pediatric patients with autism spectrum disorder (ASD) undergoing organ transplantation. Furthermore, it is difficult to manage the arduous and long-term care and follow-up processes in ASD cases undergoing organ transplantation.

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Viruses rely on host cellular machinery for replication. After entering the nucleus, the HIV genome accumulates in nuclear niches where it undergoes reverse transcription and integrates into neighboring chromatin, promoting high transcription rates and new virus progeny. Despite anti-retroviral treatment, viral genomes can persist in these nuclear niches and reactivate if treatment is interrupted, likely contributing to the formation of viral reservoirs.

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Background: The SIPPET randomized clinical trial showed that in previously untreated patients (PUPs) with severe hemophilia A, treatment with plasma-derived factor (F)VIII (pdFVIII) within the first 50 exposure days (EDs) was associated with a lower cumulative incidence of inhibitors than with recombinant FVIII (rFVIII). Switching to rFVIII beyond 50 EDs with pdFVIII is a treatment often implemented by many centers. The question is whether or not this switch may induce a risk of inhibitor development.

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Objective: To investigate whether insulin resistance and lipid metabolism disorders could be associated with sarcopenia.

Study Design: Cross-sectional descriptive study. Place and Duration of the Study: Department of Physical Medicine and Rehabilitation, Sanliurfa Training and Research Hospital, Sanliurfa, Turkiye, from December 2023 and May 2024.

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Treatment of VTE in the thrombocytopenic cancer patient.

Hematology Am Soc Hematol Educ Program

December 2024

Thrombocytopenia is a frequent complication in patients with cancer, mostly due to the myelosuppressive effects of antineoplastic therapies. The risk of venous thromboembolism (VTE) in patients with cancer is increased despite low platelet counts. The management of cancer-associated VTE in patients with thrombocytopenia is challenging, as the risk of both recurrent VTE and bleeding complications is high.

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Article Synopsis
  • Autism spectrum disorders (ASDs) are neurodevelopmental conditions marked by social skill deficits and abnormal sensory responses, with an imbalance of excitation and inhibition in the brain being a crucial factor.
  • This study examined the levels of key neurotransmitters (GABA, glutamate, and serotonin) in the thalamus of rats induced with ASD using valproic acid (VPA) during pregnancy.
  • Results showed that ASD rats had higher serotonin levels, altered thalamic volumes, and fewer thalamic neurons and glia compared to the control group, suggesting a disrupted neurotransmitter balance in the thalamus related to ASD.
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Article Synopsis
  • Slow-release GnRH agonist implants are used in male dogs for contraception, and their effects are reversible, although safety concerns exist.
  • A study was conducted to investigate the impact of these implants on testicular stress and androgen receptor signaling in dogs after the implants were removed, comparing them to untreated controls.
  • Results showed both upregulation and downregulation of various proteins related to stress response and androgen receptors, indicating that GnRH implants do not increase cellular stress compared to natural breeding cycles, but more research is needed on hypoxic conditions.
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Objective: This study is an economic evaluation of total knee replacement (TKR) in comparison with non-surgical management in India.

Methods: Cost-utility analysis and budget impact analysis (BIA) were conducted on individuals aged ≥ 50 years with osteoarthritis of the knee (OA knee) Kellgren-Lawrence grades 2 and 3 using a provider's perspective. Three scenarios were considered, varying the age at which TKR is administered while assuming a 20-year lifespan for the implant.

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