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    Contribution of amniotic membrane to the healing of iatrogenic vas deferens injury
    (Tubitak Scientific & Technological Research Council Turkey, 2021) Demir, Sabri; Erturk, Ahmet; Zengin, Mehmet; Yildiz, Dincer; Karahan, Siyami; Senel, Emrah
    Background/aim: Iatrogenic vas deferens injury is one of the most serious complications of operations in the inguinal region. Vasovasostomy is performed as treatment. However, stenosis is common after vasovasostomy. Oligospermia or azoospermia may develop and result in infertility. This study aimed to investigate the effect of amniotic membrane on healing in vas deferens injuries. Materials and methods: Four groups consisting of 10 rats each were formed. No procedure was performed in Group-I. In Group -II, the left vas deferens was transected and left to spontaneous healing. In Group-III, the left vas deferens was transected, and end -to-end anastomosis was performed. In Group-IV, the left vas deferens was transected, end-to-end anastomosis was performed, and it was closed with a wrapping of amniotic membrane on the anastomosis line. Rats were sacrificed after 60 days, and each left vas deferens was evaluated. Lumen patency was checked by passing methylene blue through the vas deferens. Subsequently, the vas deferens was evaluated both macroscopically and histopathologically. Data were evaluated using SPSS version 21.0. p < 0.05 was considered statistically significant for all variables. Results: The anastomosis lines in Group-IV healed better than those in Group-III, and less stenosis was observed. There were differences between the groups in terms of luminal patency (p = 0.009), adhesions to surrounding tissues (p = 0.02) and separation of the ends of the vas deferens (p = 0.03). Conclusion: We observed improvement on luminal patency and histology of rat vas deferens injury after surrounding human amniotic membrane on the transected and repaired surface. Further studies are needed to apply this promising result on human beings.
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    Contribution of Bone Marrowe-Derived Mesenchymal Stem Cells to Healing of Pulmonary Contusion-Created Rats
    (Academic Press Inc Elsevier Science, 2021) Demir, Sabri; Erturk, Ahmet; Gunal, Yasemin Dere; Ozmen, Ismail; Zengin, Mehmet; Yildiz, Dincer; Karaoz, Erdal
    Background: The most common thoracic injury in children, resulting in trauma, is pulmonary contusion (PC). Bone marrowe-derived mesenchymal stem cells (BM-MSCs) are used in wound healing and many other diseases. This study aims to examine the effects of BM-MSCs on PC healing in rats. Materials and methods: A total of 45 male Wistar albino rats were used. Four groups were formed. BM-MSCs were labeled with the green fluorescent protein. PC was observed in the control group. In group II, PC occured and left to spontaneous healing. In group III, PC formed and BM-MSCs were given. In group IV, BM-MSCs were given without PC formation. Subjects were sacrificed 1 week later. Whether there was any difference in terms of BM-MSC involvement and lung injury score was investigated. Statistical analysis was performed using the Statistical Package for Social Sciences (SPSS), version 17.0, software (SPSS Inc., Chicago, IL), and p value of <0.05 was considered statistically significant. Results: BM-MSCs were collected much more in the lungs in group III than in group IV. Group III had a lower lung injury score value than group II. Conclusion: The greater involvement of the BM-MSCs in the injury site, and further reductions in lung injury score suggest that BM-MSCs are contributing to the healing of the injury. The use of BM-MSCs in risky patients with diffuse PC may be an alternative treatment to conventional methods. (C) 2020 Elsevier Inc. All rights reserved.
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    Öğe
    Contribution of Bone Marrow–Derived Mesenchymal Stem Cells to Healing of Pulmonary Contusion-Created Rats
    (Academic Press Inc., 2021) Demir, Sabri; Erturk, Ahmet; Gunal, Yasemin Dere; Ozmen, Ismail; Zengin, Mehmet; Yildiz, Dincer; Karaoz, Erdal
    Background: The most common thoracic injury in children, resulting in trauma, is pulmonary contusion (PC). Bone marrow–derived mesenchymal stem cells (BM-MSCs) are used in wound healing and many other diseases. This study aims to examine the effects of BM-MSCs on PC healing in rats. Materials and methods: A total of 45 male Wistar albino rats were used. Four groups were formed. BM-MSCs were labeled with the green fluorescent protein. PC was observed in the control group. In group II, PC occured and left to spontaneous healing. In group III, PC formed and BM-MSCs were given. In group IV, BM-MSCs were given without PC formation. Subjects were sacrificed 1 week later. Whether there was any difference in terms of BM-MSC involvement and lung injury score was investigated. Statistical analysis was performed using the Statistical Package for Social Sciences (SPSS), version 17.0, software (SPSS Inc., Chicago, IL), and p value of <0.05 was considered statistically significant. Results: BM-MSCs were collected much more in the lungs in group III than in group IV. Group III had a lower lung injury score value than group II. Conclusion: The greater involvement of the BM-MSCs in the injury site, and further reductions in lung injury score suggest that BM-MSCs are contributing to the healing of the injury. The use of BM-MSCs in risky patients with diffuse PC may be an alternative treatment to conventional methods. © 2020 Elsevier Inc.
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    Öğe
    The impact of bone marrow-derived mesenchymal stem cells on experimental testicular torsion in rats
    (Tubitak Scientific & Technological Research Council Turkey, 2022) Erturk, Ahmet; Demir, Sabri; Gunal, Yasemin Dere; Zengin, Mehmet; Cinar, Miyase; Yildiz, Dincer; Karahan, Siyami
    Background/aim: The aim of this study was to investigate the healing effects of bone marrow-derived mesenchymal stem cells (BM-MSCs) on experimental testicular torsion in rats. Materials and methods: Three groups consisting of 10 Wistar albino rats were created. In Group I, the left testicle was explored and relocated in the scrotum without any attempt to modify it. In Group II, the left testicle underwent torsion for three h and then was detorsed and relocated. In Group III, in addition to torsion and detorsion, BM-MSCs were administered intratesticularly. The rats were sacrificed on the seventh day, and the healing status of the testicles was investigated with histopathological and biochemical analyses. BM-MSC involvement was investigated by immunofluorescence microscopy. Statistical analysis was performed using SPSS 15.0. A p-value < 0.05 was considered statistically significant for all variables. Results: Immunofluorescence microscopy showed that BM-MSCs were located around the Leydig cells in Group III. Under light microscopy, the mean Johnsen Score of Group III was significantly higher than that of Group II (p = 0.035). The interleukin-10 (IL-10) level was significantly higher in Group III compared to Group II (p = 0.003). While the malondialdehyde (MDA) values in Group I (the control group) were lower than in the other groups (p = 0.037), the superoxide dismutase (SOD) values were similar (p = 0.158). Although there was no statistically significant difference between Group II and Group III in terms of MDA, it was lower in Group III. Although the tissue SOD levels were higher in Group III than in Group II, the difference was not statistically significant. Conclusion: This study has demonstrated that BM-MSCs significantly corrected the Johnsen Score and increased anti-inflammatory cytokine levels after testicular torsion. BM-MSCs can be used in testicular torsion as supportive therapy to minimize tissue damage.