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    The Effect of Sildenafil on Recuperation from Sciatic Nerve Injury in Rats
    (Galenos Publ House, 2016) Korkmaz, Mehmet Fatih; Parlakpinar, Hakan; Ceylan, Mehmet Fethi; Ediz, Levent; Samdanci, Emine; Kekilli, Ersoy; Sagir, Mustafa
    Background: Severe functional and anatomical defects can be detected after the peripheral nerve injury. Pharmacological approaches are preferred rather than surgical treatment in the treatment of nerve injuries. Aims: The aim of this study is to perform histopathological, functional and bone densitometry examinations of the effects of sildenafil on nerve regeneration in a rat model of peripheral nerve crush injury. Study Design: Animal experiment. Methods: The study included a total of thirty adult Sprague-Dawley rats that were divided into three groups of ten rats each. In all rats, a crush injury was created by clamping the right sciatic nerve for one minute. One day before the procedure, rats in group 1 were started on a 28-day treatment consisting of a daily dose of 20 mg/kg body weight sildenafil citrate given orally via a nasogastric tube, while the rats in group 2 were started on an every-other-day dose of 10 mg/kg body weight sildenafil citrate. Rats from group 3 were not administered any drugs. Forty-two days after the nerve damage was created, functional and histopathological examination of both sciatic nerves and bone densitometric evaluation of the extremities were conducted. Results: During the rotarod test, rats from group 3 spent the least amount of time on the rod compared to the drug treatment groups at speeds of 20 rpm, 30 rpm and 40 rpm. In addition, the duration for which each animal could stay on the rod throughout the accelerod test significantly reduced in rats from group 3 compared to rats from groups 1 and 2 in the 4-min test. For the hot-plate latency time, there were no differences among the groups in either the basal level or after sciatic nerve injury. Moreover, there was no significant difference between the groups in terms of the static sciatic index ( SSI) on the 42nd day ( p=0.147). The amplitude was better evaluated in group 1 compared to the other two groups ( p<0.05). Under microscopic evaluation, we observed the greatest amount of nerve regeneration in group 1 and the lowest in group 3. However, this difference was not statistically significant. Moreover, there was no significant difference in the bone mineral density (BMD) levels among the groups. Conclusion: We believe that a daily single dose of sildenafil plays an important role in the treatment of sciatic nerve damage and bone healing and thus can be used as supportive clinical treatment.
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    Mini open surgical treatment of knee septic arthritis with local anesthesia: a prospective preliminary report
    (Derman Medical Publ, 2018) Ceylan, Mehmet Fethi; Guner, Savas; Turktas, Ugur; Ediz, Levent; Goktas, Ugur; Dogan, Ali
    Aim: Good pain management is provided via spinal and general anesthesia during knee joint drainage to treat septic arthritis, but the side effects are greater than those associated with local anesthesia, and the preparation process is long. Arthroscopic drainage under local anesthesia for knee septic arthritis treatment have been described, but this method requires special equipment. In this study, we aimed to evaluate the applicability of mini-open surgery under local anesthetic infiltration in cases of septic knee arthritis. Material and Method: 14 consecutive patients (eight men, six women) were admitted for knee septic arthritis treatment. Patient age ranged from 18 to 56 years, with an average age of 33 years. Drainage procedure was performed under local anesthesia, and the results were evaluated clinically. Results: The visual analog scale scores were between two and four (mean 2.8). The follow-up period was 10-21 months (mean 14.3). The Tegner and International Knee Documentation Committee scores were acceptable except for one patient. Discussion: This prospective study included mini-open surgery performed under local anesthesia on 14 septic knees, and showed that this method is safe, effective, well tolerated and be alternative to conventional techniques.
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    The therapeutic efficacy of dexpanthenol on sciatic nerve injury in a rat model
    (Taylor & Francis Ltd, 2020) Korkmaz, Mehmet Fatih; Parlakpinar, Hakan; Erdem, Mehmet Nuri; Ceylan, Mehmet Fethi; Ediz, Levent; Samdanci, Emine; Kekilli, Ersoy
    Objective: The aim of this study was to evaluate histopathological, functional and bone densitometry examinations of the beneficial effects of dexpanthenol (DEX) on nerve regeneration in a rat model of peripheral nerve crush injury. Methods: Thirty adult Sprague-Dawley rats were divided equally into three groups. A crush injury was simulated in all rats by clamping the right sciatic nerve for one minute. In group 1, one day before the surgical procedure, 500 mg/kg DEX administered via intraperitoneally (ip) was initiated and continued three times in a week during the experiment period as 28 days. In group 2, rats received a dose of 10 mg/kg DEX to investigate possible effects of DEX alone. Group 3 served as the control (sciatic nerve injury) and was not given any drugs. Results: Performance was significantly lower in group 3 compared to the drug treatment groups during the rotarod test (30 rpm and 40 rpm) (p < 0.05). After a while, the rats which were able to remain on the rod was significantly lower in group 3 during the acceleration test (p < 0.05). Hot plate latency test results in group 3 were significantly lower when compared to the other groups (p < 0.05). Conclusion: DEX appears to be useful as a supportive clinical agent for the treatment of pain and nerve damage.