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RISS 인기검색어
- 검색키워드
- 저자 : Civi, Soner (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Civi, Soner,Durdag, Emre,Aytar, Murat Hamit,Kardes, Ozgur,Kaymaz, Figen,Aykol, Sukru The Korean Neurosurgical Society 2017 Journal of Korean neurosurgical society Vol.60 No.4
Objective : Repair of sensorial nerve defect is an important issue on peripheric nerve surgery. The aim of the present study was to determine the effects of sensory-motor nerve bridging on the denervated dermatomal area, in rats with sensory nerve defects, using a neural cell adhesion molecule (NCAM). Methods : We compared the efficacy of end-to-side (ETS) coaptation of the tibial nerve for sural nerve defect repair, in 32 Sprague-Dawley rats. Rats were assigned to 1 of 4 groups : group A was the sham operated group, group B rats had sural nerves sectioned and buried in neighboring muscles, group C experienced nerve sectioning and end-to-end (ETE) anastomosis, and group D had sural nerves sectioned and ETS anastomosis was performed using atibial nerve bridge. Neurological evaluation included the skin pinch test and histological evaluation was performed by assessing NCAM expression in nerve terminals. Results : Rats in the denervated group yielded negative results for the skin pinch tests, while animals in the surgical intervention groups (group C and D) demonstrated positive results. As predicted, there were no positively stained skin specimens in the denervated group (group B); however, the surgery groups demonstrated significant staining. NCAM expression was also significantly higher in the surgery groups. However, the mean NCAM values were not significantly different between group C and group D. Conclusion : Previous research indicates that ETE nerve repair is the gold standard for peripheral nerve defect repair. However, ETS repair is an effective alternative method in cases of sensorial nerve defect when ETE repair is not possible.
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Effects of Tumor Necrosis Factor Alpha Blocker Adalimumab in Experimental Spinal Cord Injury
Borcek, Alp Ozgun,Civi, Soner,Ocal, Ozgur,Gulbahar, Ozlem The Korean Neurosurgical Society 2015 Journal of Korean neurosurgical society Vol.57 No.2
Objective : Tumor necrosis factor alpha (TNF-${\alpha}$) have proven effects in pathogenesis of neuroinflammation after spinal cord injury (SCI). Current study is designed to evaluate the effects of an anti-TNF-${\alpha}$ agent, adalimumab, on spinal cord clip compression injury in rats. Methods : Thirty two male adult Wistar rats were divided into four groups (sham, trauma, infliximab, and adalimumab groups) and SCI was introduced using an aneurysm clip. Animals in treatment groups received 5 mg/kg subcutaneous adalimumab and infliximab right after the trauma. Malondialdehyde (MDA) levels were studied in traumatized spinal cord tissues 72 hours after the injury as a marker of lipid peroxidation. Results : Animals that received anti-TNF-${\alpha}$ agents are found to have significantly decreased MDA levels. MDA levels were significantly different between the trauma and infliximab groups (p<0.01) and trauma and adalimumab groups (p=0.022). There was no significant difference in neurological evaluation of the rats using Tarlov scale. Conclusion : These results suggest that, like infliximab, adalimumab has favorable effects on lipid peroxidation induced by spinal cord trauma in rats.
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Cansu Ozbayer,Hulyam Kurt,Suna Kalender,Hilmi Ozden,Hasan V. Gunes,Ayse Basaran,Ecir A. Cakmak,Kismet Civi,Yusuf Kalender,Irfan Degirmenci 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.10
Diabetes is the leading cause of chronic renal failure. Our purpose was to determine the effects of N-nitro-l-arginine (l-NNA) and an extract of Stevia rebaudiana (Bertoni) (SrB) leaves on renal function in streptozotocin-nicotinamide (STZ-NA)–induced diabetic rats. Rats were divided into seven groups. Three of these groups were controls. Diabetes was induced by STZ-NA in the other four. Diabetic rats were treated with SrB (200 mg/kg), _L-NNA (100 mg/kg), or SrB + _L-NNA for 15 days after 5–8 weeks of diabetes. At the end of the experiments, urine and blood samples were collected from the rats, and kidney tissue samples were collected with the animals under ether anesthesia. Renal filtration changes were determined by measuring urine pH, urine volume, and serum and urine creatinine. Nitric oxide synthase (NOS) activity was measured in kidney homogenates. Alterations in kidney ultrastructure were determined by electron microscopy, and histological changes were examined by hematoxylin and eosin staining. No statistical differences were observed in urine creatinine or creatinine clearance. Even so, we observed higher NOS activity in SrB-treated diabetic rats. SrB-treated diabetic rats had less mitochondrial swelling and vacuolization in thin kidney sections than other diabetic groups. The control groups showed normal histological structure, whereas in the diabetic groups, membrane thickening, tubular epithelial cells, and cellular degeneration were observed. Thus, SrB has beneficial effects on diabetes compared with _L-NNA. Our results support the validity of SrB for the management of diabetes as well as diabetes-induced renal disorders.
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