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    Effect of irisin on the epilepsy induced by penicillin G: An electrophysiological study
    (Ondokuz Mayis Universitesi, 2022) Şahin Yıldız, Yasemin; Demir, Şerif; Beyazçiçek, E.; Gök, A.; Beyazçiçek, Özge
    Epilepsy is a neurological disease characterized by sudden and synchronized seizures caused by abnormal and excessive electrical discharges in brain neurons. The purpose of this study was to electrophysiologically examine the effects of acute administration of irisin, which is thought to be neuroprotective and increase cell proliferation, at different doses (10 and 100 nM) on the penicillin-induced experimental epilepsy in rats. Forty-nine adult male Wistar rats were used in the study. The rats were divided into 7 groups: sham, control group (penicillin), irisin group, the pre- and during-seizure groups of 10 nM and 100 nM irisin. All the substances except penicillin were administered intraperitoneally. The rats were anesthetized using urethane. The bone tissue on the left cerebral cortex was removed and the electrodes were placed in the somatomotor cortex. Thirty minutes before penicillin administration, irisin was administered to the pre-seizure penicillin group at doses of 10 nM and 100 nM. Then, penicillin (500 IU/2 µl) was injected intracortically, and ECoG recording was continued for 120 minutes. On the other hand, 10 nM and 100 nM of irisin were administered to the during-seizure penicillin group after penicillin was injected intracortically and the seizure occurred, and ECoG recording was continued for 120 minutes. The ECoG recordings were analyzed using the PowerLab Chart v.8 software. In conclusion, it was found that irisin prolonged the latency of initial epileptic activity and decreased the number and amplitude of spike-waves in the penicillin-induced experimental epilepsy model. These results suggest that irisin might have an antiepileptic potential. © 2022 Ondokuz Mayis Universitesi. All rights reserved.
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    Experimental Animal Models in Heart Disease
    (Duzce University Medical School, 2024) Gök, A.; Beyazçiçek, E.
    Heart diseases constitute a significant global burden of mortality and morbidity. This encompassing word refers to a variety of illnesses, including coronary artery disease, heart failure, myocardial infarction, and valvular heart disease. Given the imperative need to comprehend and address these ailments, experimental studies are indispensable. Experimental animal models serve as indispensable tools in elucidating the mechanisms of heart disease. They are pivotal for developing novel treatments and assessing the efficacy of existing therapies. Among the commonly utilized animal models in heart disease research are mice, rats, rabbits, dogs, and pigs. Each model offers distinct advantages and limitations, allowing researchers to probe specific facets of cardiac pathology and unravel the intricate mechanisms involved in heart disease. In this comprehensive review, it was aimed to provide a succinct overview of the various animal models employed in heart disease research. The advantages and drawbacks of each model were delineated, the aspects of human heart disease they emulate were elucidated, and pivotal research findings facilitated by their utilization were highlighted. By synthesizing this information, it was the endeavor to provide researchers and clinicians with valuable insights into the diverse array of animal models available for investigating heart diseases, ultimately paving the way for enhanced understanding and treatment of these debilitating conditions. © 2024, Duzce University Medical School. All rights reserved.