Publications by authors named "Gokhan Arslan"

Ischemia-reperfusion (IR) injury, a process involving the disruption and subsequent restoration of blood flow, is a significant contributing factor to both cardiovascular diseases and broader tissue damage. Carnosine, a natural dipeptide notably abundant in muscle tissue and recognized for its antioxidant attributes, may offer protective benefits against the deleterious effects of IR injury. A total of 24 rats were randomly allocated into four distinct groups: control, carnosine control, IR, and Carnosine + IR.

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The identification of myostatin (mstn) gene functions in salmonids has been complicated by two whole-gene duplications (WGDs), leading to the presence of up to four mstn genes in their genomes, as opposed to the one or two copies found in other vertebrates. In this research, we molecularly cloned and characterized four mstn genes-Sl-mstna1, Sl-mstna2, Sl-mstnb1, and Sl-mstnb2-in the Black Sea trout (Salmo labrax). We propose that Sl-mstnb2 is a pseudogene due to a nonfunctionalization event, while Sl-mstna1, Sl-mstna2, and Sl-mstnb1 are retained in the Salmo labrax genome due to subfunctionalization.

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Background: Azathioprine (AZA) and rituximab (RTX) are frequently used drugs in the treatment of Myelin Oligodendrocyte Glycoprotein Associated Disease (MOGAD).

Objectives: The aim of this study was to evaluate the efficacy and safety data of AZA and RTX treatments in MOGAD.

Methods: Patients diagnosed according to the 2023 MOGAD diagnostic criteria and receiving AZA or RTX treatment were included in the study.

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Background: Erythrocyte deformability, the ability of red blood cells to bend and twist as they pass through capillaries, is es-sential for tissue perfusion. This study investigates the effects and underlying mechanisms of rosmarinic acid treatment on erythrocyte deformability in rats subjected to lower limb ischemia-reperfusion injury.

Methods: The study was conducted on Wistar albino rats weighing 400-450 g.

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Objectives: Kappa free light chains (κ-FLC) have emerged as a reliable biomarker for diagnosing multiple sclerosis (MS). Compared to oligoclonal band (OCB) measurement, κ-FLC presents distinct advantages, including enhanced accessibility in clinical practice. This study evaluates κ-FLC index values in MS patients and explores its potential as a practical alternative to the OCB test.

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Unlabelled: We evaluated the protective effects of melatonin against skeletal muscle ischemia-reperfusion injury, a significant cause of skeletal muscle damage. Ischemia-reperfusion (I/R) injury occurs due to a temporary restriction of blood flow (ischemia) followed by its restoration (reperfusion), triggering oxidative stress, inflammation, and cell death. Although current treatments are limited, melatonin's antioxidant and anti-inflammatory properties suggest potential benefits.

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In the present study, the effects of the acetylcholinesterase (AChE) enzyme inhibitor rivastigmine (RIVA) on spike-wave discharges (SWDs), memory impairment, anxiety-like behavior, and the transient receptor potential vanilloid 1 (TRPV1) gene expression were investigated in genetic absence epileptic Wistar Albino Glaxo/Rijswijk (WAG/Rij) rats. After tripolar electrodes were implanted on the WAG/Rij rats' skulls, single doses of 0.125, 0.

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This study aimed to investigate the role of acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) inhibitor rivastigmine (RIVA) in the pentylenetetrazole (PTZ)- induced kindling model of epilepsy. The current study consists of three steps; 1) Saline or RIVA (0.5, 1, and 2 mg/kg) was administered intraperitoneally (i.

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Article Synopsis
  • Erythrocyte deformability is essential for tissue perfusion, and this study investigates how Thymoquinone affects this property in rats with lower extremity ischemia-reperfusion injury.
  • Researchers divided Wistar rats into five groups, including a control and various Thymoquinone treatment groups, to examine its effects on erythrocyte deformability and other markers post-injury.
  • Results showed that Thymoquinone significantly improved erythrocyte deformability and morphology while increasing the activity of endothelial nitric oxide synthase compared to the untreated ischemia-reperfusion group.*
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Introduction: This study aimed to investigate the effects of chronic swimming exercise and vitamin E administration on elemental levels in the bone tissue of epileptic rats.

Methods: Forty-eight rats were divided into six groups: Control, Swimming, Swimming + vitamin E, Swimming + Epilepsy, Swimming + Epilepsy + vitamin E, and Epilepsy. Vitamin E was administered to the animals chronically by gavage at a dose of 500 mg/kg every other day for 3 months.

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Objective: In this study, the effects of leptin, cannabinoid-1 (CB1) receptor agonist ACEA and antagonist AM251, and the interactions between leptin and CB1 receptor agonist/antagonist on oxidant and antioxidant enzymes in the cerebrum, cerebellum, and pedunculus cerebri tissue samples were investigated in the penicillin-induced epileptic model.

Methods: Male Wistar albino rats (n=56) were included in this study. In anesthetized animals, 500 IU penicillin-G potassium was injected into the cortex to induce epileptiform activity.

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Background: Bleeding remains the leading cause of potentially preventable deaths both in military and civilian pre-hospital trauma settings. Conventional extremity tourniquets do not control bleeding if an iliac artery or a common femoral artery is injured. Stopping junctional bleeding is particularly challenging and requires the use of specifically designed junctional tourniquets.

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In this study we used ivabradine (IVA), a hyperpolarization-activated cyclic nucleotide-gated (HCN) channel blocker, to identify its effect on spike-wave discharges (SWDs); and aimed to determine the role of IVA on the effects of T-type calcium channel blocker NNC 55-0396, GABA receptor agonist muscimol and antagonist bicuculline in male WAG/Rij rats. After tripolar electrodes for electrocorticogram (ECoG) recordings were placed on the WAG/Rij rats' skulls, 5, 10, and 20 mg/kg IVA were intraperitoneally administered for 7 consecutive days and ECoG recordings were obtained on days 0, 3, 6, and 7 for three hours before and after injections. While acute injection of 5, 10, and 20 mg/kg IVA did not affect the total number and the mean duration of SWDs, subacute administration (7 days) of IVA decreased the SWDs parameters 24 hours after the 7 injection.

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Introduction: Coronavirus disease 2019 (COVID-19) is the biggest health challenge of recent times. Studies so far reveal that vaccination is the only way to prevent this pandemic. There may be factors that decrease or increase vaccine effectiveness.

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Article Synopsis
  • This study focuses on the effectiveness of COVID-19 vaccinations in people with multiple sclerosis (pwMS) taking various disease-modifying therapies (DMTs), primarily comparing mRNA vaccines (like Pfizer-BioNTech) with inactivated virus vaccines (like Sinovac).
  • Results showed that while both types of vaccines resulted in similar rates of seropositivity, the mRNA vaccine group had significantly higher antibody levels compared to the inactivated virus vaccine group.
  • The study also found that pwMS on certain DMTs, specifically ocrelizumab, fingolimod, and cladribine, had reduced humoral responses to the vaccines, highlighting the impact of therapies on vaccine efficacy
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The molecular characteristics and tissue disruption of 10 fatty acid-binding protein (fabp) genes in gilthead seabream (Sparus aurata) were investigated, and their expression levels were found in the fish fed diets with different vegetable oil (VO) sources, which may explore the potential function of fabp genes in S. aurata. For this purpose, the open reading frames of fabp genes involved in the transport and ß-oxidation of fatty acids (FA) were molecularly cloned and characterized.

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Aim: To establish safe and straightforward anesthesia used in experiments, we examined the effect of ketamine, ketamine/xylazine, urethane, chloral hydrate, pentobarbital, isoflurane, dexmedetomidine, and dexmedetomidine/ketamine on epileptiform activity in genetic absence epilepsy (WAG\Rij) rats.

Materials And Method: Sixty-three male WAG/Rij rats weighing (170-190 g) were used. Tripolar electrodes were inserted into the skull.

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Endoplasmic reticulum (ER) stress and apoptosis are implicated in the pathogenesis of epilepsy. Here we examine the effects of valproic acid (VA) plus 4-phenylbutyric acid (4-PBA) on abnormal electrical brain activity, ER stress and apoptosis in acute seizures induced by pentylenetetrazole (PTZ). Forty male rats were randomly divided into five groups, each consisting of 8 rats as follows: Sham, PTZ, VA+PTZ, 4-PBA+PTZ, and VA plus 4-PBA+PTZ.

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Background: COVID-19 is a multisystemic infection with variables consequences depending on individual and comorbid conditions. The course and outcomes of COVID-19 during neuromyelitis optica spectrum disorders (NMOSD) and myelin oligodendrocyte glycoprotein antibody-associated disorders (MOGAD) are not clearly known.

Objective/methods: The aim of this study was to examine the features and outcomes of COVID-19 infection in NMOSD and MOGAD patients.

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Aortico-left ventricular tunnel (ALVT) is a rare congenital cardiac anomaly and constitutes less than 0.1% of all congenital cardiac defects (1). ALVT is described as an abnormal connection between the ascending aorta and the left ventricle which originates commonly above the right sinus of valsalva.

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Alpha2-adrenoreceptor (α-AR) is a noradrenergic receptor that is frequently studied for modulation of seizure activity. However, the precise role of this receptor agonists in regulating seizure activity is still unclear. Our aim in this study was to investigate the effects of α-AR agonist dexmedetomidine (DEX) and atipamezole (α-AR antagonist, ATI) on seziures in rats.

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It is known that microplastics (MPs) are increasingly detected in aquatic environments (sea and fresh water), and the presence of these pollutants have worrying potential effects on the biota. This study is the first research to measure and characterize MPs in freshwater ecosystems (inland waters) in Turkey. Accordingly, the identification and characterization of MPs in the gastrointestinal systems of fish by making samples of three species [chub (Squalius cephalus), common carp (Cyprinus carpio), and mossul bleak (Alburnus mossulensis)] of the carp family living in Karasu River in Erzurum.

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Background: This study aimed to investigate the incidence of postoperative atrial fibrillation (POAF) in patients undergoing off-pump versus on-pump coronary artery bypass grafting (CABG) under cardiopulmonary bypass (CPB).

Methods: A total of 3,197 consecutive patients (1,816 males, 1,381 females; mean age: 60.8 ± 9.

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Epilepsy is a neurological disorder resulting from abnormal neuronal firing in the brain. Glutamate transporters and the glutamate-glutamine cycle play crucial roles in the development of seizures. In the present study, the correlation of epilepsy with glutamate transporters and enzymes was investigated.

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