Browsing by Publisher "Comenius University in Bratislava"

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    The effects of melatonin and thymoquinone on doxorubicin- -induced cardiotoxicity in rats
    (Comenius University in Bratislava, 2020) Yildiz Pehlivan D.; Durdagi G.; Oz Oyar E.; Akyol S.; Ozbek M.
    OBJECTIVES: This study aims to investigate the protective effects of thymoquinone and melatonin on the heart against doxorubicin-induced cardiotoxicity in rats. BACKGROUND: Melatonin and thymoquinone may play an important role in cardiotoxicity. METHODS: The subjects were divided into four groups: Control (physiological serum on 5th day), Doxorubicin (DXR), Doxorubicin+Melatonin (DXR+MEL, 10 mg/kg melatonin, intraperitoneally), and Doxorubicin+Thymoquinone (DXR+TQ, 50 mg/kg thymoquinone, orally). On the 5th day of the experiment, all groups were injected with 45 mg/kg DXR into the tail vein. On the 8th day of the experiment, ECG recordings were performed under anaesthesia. RESULTS: Thymoquinone reduced the PR, QRS and QTc intervals, which were increased by DXR, while melatonin only reduced the QTc interval. Melatonin had a protective effect against the histopathological changes induced by DXR, while TQ did not demonstrate such an effect. DXR increased CK-MB, IL-6, MDA, IL-1, IL-18 levels and decreased SOD in the cardiac tissue. MEL reduced the levels of CK-MB, MDA, NO, SOD, IL-1, IL-6, IL-18. Meanwhile, TQ only reduced CK-MB, IL-1 and IL-18. CONCLUSION: Our study showed that DXR induces cardiac injury and that melatonin improves biochemical parameters and offers histological protection; while thymoquinone improves ECG parameters and causes partial recovery of biochemical parameters (Tab. 4, Fig. 2, Ref. 41). Text in PDF www.elis.sk. © 2020.
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    Evaluation of functional status and quality of life of patients in the 1st and 6th months post-COVID in the light of radiological influence
    (Comenius University in Bratislava, 2024) Avci I.; Celik P.; Kizilirmak D.; Havlucu Y.
    OBJECTIVE: The aim of the study is to evaluate the functional status and quality of life parameters of patients in the 1st and 6th months post-COVID and to determine contributing factors. BACKGROUND: The effects of COVID-19 can continue in the post-COVID period. The most common post-COVID symptoms are weakness, fatigue, nonproductive cough and exertional dyspnea. METHOD: The radiological findings of the patients at diagnosis, post-COVID 1st and 6th months; functional status and quality of life parameters at the 1st and 6th months of the post-COVID period were compared, and the factors affecting them were evaluated. The relationship between radiological involvement, quality of life and functional status parameters was investigated. RESULTS: Six months after the COVID infection, inpatient’s resting oxygen saturation and effort capacity were comparable, even though they were significantly lower in the first month post-COVID. There was a correlation between functional and quality of life measures at 1 and 6 months after COVID-19 infection. In all patients, a significant improvement was found in the functional status and quality of life scales at 6 months after post-COVID infection compared to the 1st month. Even though radiological findings of both groups improved within the first month after COVID-19 infection, there remained a difference between them that disappeared after six months. CONCLUSION: It was found that in the post-COVID period, the severity of the disease had a negative effect on functional measurements and quality of life; however, regardless of the severity of the disease, after six months improvements in radiological findings, effort capacity, and quality of life measures were noted (Tab. 2, Fig. 5, Ref. 20). Text in PDF www.elis.sk. © (2024), (Comenius University). All Rights Reserved.