Yazar "Taş, Abdurrahim" seçeneğine göre listele

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    The effect of alpha-lipoic acid on nerve tissue healing after sciatic nerve crush injury in rats
    (Turgut Ozal Medical Center, 2023) Yücel, Murat; Aktaş, Özgür Yusuf; Zengi, Oğuzhan; Taş, Abdurrahim; Tufan, Azmi; Eren, Burak; Guzey, Feyza Karagöz
    Aim: Crush injury damages the nerve, affects its function and causes oxidative stress. Alpha-lipoic acid (ALA) is an antioxidant agent with protective effects on the nerve tissue. In this study, we aimed to investigate the effects of ALA in the treatment of crush sciatic nerve injury in rats. Materials and Methods: Forty rats were divided into five groups. Walking Track Analysis (WTA) was performed in all groups before sacrificing the sciatic nerve. In group I (sham group), the sciatic nerve was exposed but not crushed, whereas in group II (early control group, 24th hour), group III (late control group, 7th day), group IV (early exper imental group, 24th hour), and group V (late control group, 7th day), the sciatic nerve was exposed and clipped with an aneurysm clip for 300 seconds. One hour after the crush injury, subjects in groups II and III were given saline (2.5 ml, intraperitoneally), while ALA (100 mg/kg, intraperitoneally) was administered in Groups IV and V. WTA was per formed in Groups I, II, and IV at the 24th hour after clipping and was performed in Groups III and V at 7th day after clipping. In all groups, the Sciatic Functional Index (SFI) was calculated after WTA. Following the completion of WTA, sciatic nerve tissue samples were obtained for the measurement of malondialdehyde (MDA), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT) enzyme values. Results: The SFI scores in groups II, III, IV, and V were significantly lower than that of sham group (p<0.05), while no significant difference was found between groups II and IV and between groups III and V (p>0.05). The CAT values of groups II and IV, the GSH-Px value and MDA value of group IV, and the SOD values of groups II and IV were found to be significantly higher than those of sham group (p<0.05). However, no significant difference was found among groups I, III, and V with regard to CAT, GSH-Px, MDA and SOD values (p>0.05). Conclusion: The results indicated that a single dose of ALA (100 mg/kg) administered intraperitoneally one hour after the sciatic nerve crush injury had no therapeutic efficacy at 24 hours and 7 days after the administration. Further experimental studies are needed to evaluate the effectiveness of ALA applied in several doses rather than a single dose in crush peripheral nerve injury models.
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    Evaluation of cholinergic enzymes and selected biochemical parameters in the serum of patients with a diagnosis of acute subarachnoid hemorrhage
    (Walter de Gruyter GmbH, 2023) Aycan, Abdurrahman; Taş, Abdurrahim; Yeltekin, Aslı Çilingir; El-Tekreti, Sama Amer Abbas; Arslan, Ayşe; Arslan, Mustafa; Aycan, Nur
    Background: Spontaneous subarachnoid hemorrhage (SAH) is the most severe form of hemorrhagic stroke and accounts for 5-7% of all strokes. Several chemical enzymes and cytokines are thought to cause reactions that may affect the mortality and morbidity of SAH patients. This study aimed to examine the possible relationships between these parameters and the occurrence of SAH and the clinical-radiological parameters in patients with acute SAH. Methods: This study evaluated 44 patients, including 20 with SAH and 24 controls. We obtained blood from the patients and control groups, which was stored in heparinized tubes and used in determining tumor necrosis factor alpha (TNF-α), brain-derived neurotrophic factor (BDNF), acetylcholinesterase (AChE), caspase-3, and butyrylcholinesterase (BChE) enzymes. Results: TNF-α, BDNF, AChE, and BChE enzyme levels were not related to the Glasgow Coma scale (GCS) score in the patient group (p > 0.05), whereas higher enzyme levels of caspase-3 were associated with lower GCS scores (p < 0.05). The difference between the control and patient groups in terms of mean TNF-α levels was statistically significant (p < 0.01). The BDNF levels were statistically insignificant in the patient groups (p > 0.05). Caspase-3, AChE, and BChE levels were significantly different between the control and patient groups (p < 0.01). Conclusions: Our results may be valuable for predicting the prognosis, diagnosis, and follow-up of patients with SAH. However, further studies are required to elucidate the relationship between the clinical and radiological results in patients with SAH and certain enzymes, cytokines, and growth factors.
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    Investigation of the neuro-regenerative effects of bioresonance and magnetotherapy in sciatic nerve damage-induced rats
    (Universidad de la Frontera, 2023) Taş, Abdurrahim; Nalci, Kemal Alp; Sincan, Suat; Özdemir, Hülya; Üstün, Ramazan; Aras, İbrahim; Tuncer, Mehmet Cudi
    Peripheral nerve damage is a significant clinical problem that can lead to severe complications in patients. Regarding the regeneration of peripheral nerves, it is crucial to use experimental animals' nerves and use different evaluation methods. Epineural or perineural suturing is the gold standard in treating sciatic nerve injury, but nerve repair is often unsuccessful. This study aimed to investigate the neuroregenerative effects of magnetotherapy and bioresonance in experimental animals with sciatic nerve damage. In this study, 24 female Wistar rats were divided into 7 groups (n=6) as follows: Group 1 (Control), Group 2 (Axonotmesis control), Group 3 (Anastomosis control), Group 4 (Axonotmesis + magnetotherapy), Group 5 (Anastomosis + magnetotherapy), Group 6 (Axonotmesis + bioresonance), Group 7 (Anastomosis + bioresonance). Magnetotherapy and bioresonance treatments were applied for 12 weeks. Behavioural tests and EMG tests were performed at the end of the 12th week. Then the rats were sacrificed, and a histopathological evaluation was made. The statistical significance level was taken as 5% in the calculations, and the SPSS (IBM SPSS for Windows, ver.21) statistical package program was used for the calculations. Statistically significant results were obtained in animal behaviour tests, EMG, and pathology groups treated with magnetotherapy. There was no statistically significant difference in the groups treated with bioresonance treatment compared to the control groups. Muscle activity and nerve repair occurred in experimental animals with acute peripheral nerve damage due to 12 weeks of magnetotherapy, and further studies should support these results.