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Öğe Comparison of the healing effects of mesazaline and Ganoderma lucidum in acetic acid-induced colitis in rats(Korean Surgical Society, 2022) ozden, Huseyin; Sahin, Yasar; Kilitci, Asuman; Karaca, Gokhan; Gomec, Muhammed; Yildiz, Ahmet; Ucar, CahitPurpose: The etiology and pathogenesis of distal colitis (DC) are poorly understood. Activation of intestinal inflammatory response may lead to intestinal tissue necrosis. Antioxidant and anti-inflammatory agents are among the treatment options. Our study aimed to compare the protective effects of mesalazine and Ganoderma lucidum in acetic acid (AA) induced colitis in rats. Methods: Twenty-four rats were randomly grouped as colitis, mesalazine, G. lucidum, and combined (G. lucidum + mesalazine) groups. DC was induced by intrarectal administration of AA. Statistical comparisons were done by using parameters including colonic tissue IL-1, IL-6, TNF-alpha, and CRP levels. Histopathologic changes of the samples of colonic tissue were scored as mucosal damage score and inflammatory score. A P-value of <0.05 was considered significant. Results: Intrarectal administration of AA leads to increased interleukin and CRP levels. High mucosal damage and inflammatory scores were noted in colitis group animals. Single mesalazine or G. lucidum treatment produced considerably decreased tissue interleukin and CRP levels. The lowest tissue interleukin and CRP levels were noted in the combined treatment group of animals. Mucosal damage and inflammatory scores were found to be significantly low in this group of animals. Conclusion: The intrarectal administration of AA results in an activation of intestinal inflammation and severe mucosal damage in colonic tissue. Single use of mesalazine and G. lucidum treatment decreases the severity of intestinal inflammatory response and mucosal damage. The healing effects of the combined treatment of mesalazine and G. lucidum seem to be more effective than that of separate use in the treatment of DC.Öğe Could erythropoietin reduce the ovarian damage of cisplatin in female rats?(Taylor & Francis Ltd, 2018) Sayan, Cemile Dayangan; Tulmac, Ozlem Banu; Karaca, Gokhan; Ozkan, Zehra Sema; Yalcin, Selim; Devrim, Tuba; Badem, Nermin DindarThe aim of this study is to investigate whether erythropoietin (EPO) can reduce the ovarian damage of cisplatin or not. Thirty, female, Wistar-Albino rats were used in the study. Control group (N=10): Intraperitoneal saline infusion, Cisplatin group (N=10): Intraperitoneal 7mg/kg cisplatin, Cisplatin+EPO group (N=10): Intraperitoneal 7mg/kg cisplatin and subcutaneous 200IU/kg/day EPO. Serum AMH concentrations were measured by enzyme-linked immunosorbent assay kit of AMH. Follicular counts were evaluated according to mean diameter of the follicles. Ovarian damage; including follicular cell degeneration, vascular congestion, hemorrhage, and inflammation was scored histologically using a graduated scale. Posttreatment AMH levels of cisplatin group were significantly lower than control and cisplatin+EPO groups. In cisplatin group, there was a significant decrement in posttreatment AMH level compared to pretreatment AMH level. The total damage score of cisplatin group was significantly higher than scores of control and cisplatin+EPO groups. The mean primordial follicle counts of control and cisplatin+EPO groups were significantly higher than that of cisplatin group (p=.007 and p=.003). The results of this study revealed that EPO administration to cisplatin chemotherapy could ameliorate the ovarian damage. Erythropoietin administration to chemotherapeutic agents might suggest to protect ovarian failure and infertility.Öğe Ectopic Liver Tissue on the Gallbladder: An Incidental Mass in Laparoscopy(Acad Medical Sciences I R Iran, 2016) Karaca, Gokhan; Ozden, Huseyin; Pehlivanli, Faruk; Pekcici, M. Recep; Yildirim, YesimEctopic liver is a rare developmental abnormality. It is often asymptomatic and could be determined during the surgery. Although it be detected in different areas of the body either below or above of the diaphragm, ectopic liver is usually found on the wall of the gallbladder. The importance of the ectopic liver came from the elevated risk of development of hepatocellulary carcinoma from ectopic tissue. Ectopic liver tissue could also mimic malign masses in radiographic studies. Ultrasound-guided percutaneous biopsies could be helpful for preoperative diagnosis. Recently, widespread usage of laparoscopic techniques caused an increase on the description of ectopic liver tissues located on the gallbladder, Due to the potential risk of developing malignancy the resection of the mass should be the preferred approach for an incidentally or intraoperatively diagnosed ectopic liver tissue.Öğe Effect of ankaferd blood stopper in experimental peritoneal adhesion model(Korean Surgical Society, 2016) Karaca, Gokhan; Aydin, Oktay; Pehlivanli, Faruk; Kocael, Ahmet; Pekcici, Recep; Duymus, Esat; Guler, OsmanPurpose: Ankaferd Blood Stopper (ABS) is an herbal extract attained from 5 different plants. It has the therapeutic, potential to be used for the management of external hemorrhage and controlling gastrointestinal bleedings. To date, the safety of ABS for intraperitoneal usage is not clear. In this study, we investigated the effectiveness and safety of using intraperitoneal ABS in an experimental peritoneal adhesion Model. Methods: Twenty-four male Wistar Albino rats were used in the study. The rats were randomly divided into 3 groups: saline, ABS, and control. On the 10th day, all rats were euthanized. The adhesions were evaluated by Nair's macroscopic adhesion classification, and pathologically evaluated with Zuhlke's microscopic adhesion classification. Results: A macroscopic and microscopic comparison between the ABS and saline groups did not show any differences but both the ABS and saline groups were superior when compared to the control group. Conclusion: ABS was found equally effective with saline on the abdominal adhesions and to no effect on postoperative adhesion formation.Öğe The effect of mesenchymal stem cell use on intra-abdominal adhesions in a rat model(Korean Surgical Society, 2018) Karaca, Gokhan; Pehlivanli, Faruk; Aydin, Oktay; Altunkaya, Canan; Uzun, Hafize; Niyaz, Mehmet; Bulut, HuriPurpose: Intra-abdominal adhesions (IAA) are among the most frequently seen pathologies in general surgery practice with an increased morbidity and mortality. In the present study, we investigated the effect of locally applied mesenchymal stem cells (MSCs) on IAA. Methods: Twenty-four Wistar Albino rats were used in the study. The rats were divided into three groups including: Sham, control, and MSCs group. On day 0, cecum was reached under anesthesia in all groups, except the Sham group. Scraping with a sponge was performed until petechial bleeding occurred. The control group received no treatment. In the stem cell group, MSCs were applied topically immediately after surgery on adhesions. The rats were sacrificed on day 10 and colon tissues and blood samples were collected for macroscopic, histopathological, and biochemical analysis. Results: In our study, E-selectin, P-selectin, TNF-alpha and IL-1 levels were statistically significantly lower in the MSC group than the control group, while the sham group has the lowest levels. In both the macroscopic and histopathological analyses (ZUhlke's scale), the least amount of adhesion was observed in the Sham group. In addition, although there was less adhesion in the MSC group than the control group, the difference did not reach statistical significance. Conclusion: Topical MSC application immediately after surgery suppresses the inflammatory process. However it was found to be ineffective in histopathological and macroscopic examinations performed on the 10th day.Öğe Effectiveness of thymoquinone, zeolite, and platelet-rich plasma in model of corrosive oesophagitis induced in rats(Korean Surgical Society, 2017) Karaca, Gokhan; Aydin, Oktay; Pehlivanli, Faruk; Altunkaya, Canan; Uzun, Hafize; Guler, OsmanPurpose: The effectiveness of platelet-rich plasma (PRP), thymoquinone, and zeolite-in corrosive esophageal burns was investigated in a rat model. Methods: Four groups were comprised as containing 10 rats in each group. For group I, oesophagitis was induced and no other procedure was performed (control group). For group II, oesophagitis was induced and thymoquinone was administered for 1 week via oral gavage once a day (thymoquinone group). For group III, oesophagitis was induced for 1 week via oral gavage once a day (PRP group). For group IV, oesophagitis was induced and zeolite was administered for 1 week via oral gavage once a day (zeolite group). On the 10th day, the rats were sacrificed under anaesthesia and venous blood sampling was performed from the vena portae. The oesophaguses were totally excised.-Biochemically, interleukin. (IL)-1B, IL-6, TNF-alpha, and MCP-1 were examined from venous blood. Inflammation score was evaluated histopathologically in oesophageal tissue that was collected. Results: There was a statistically significant difference among groups in terms of IL-1, IL-6, MCP levels, compared to the control group; median IL-1, IL-6, MCP levels of thymoquinone, PRP, and zeolite groups were statistically significantly' lower. There was a statistically significant difference among groups in terms of inflammation scores, compared to group I; median inflammation scores of groups II, III and IV were statistically significantly lower thymoquinone. Conclusion: PRP, and zeolite exhibited positive effect on recovery in oesophagitis by reducing inflammation in the involved segment.Öğe Effectiveness of thymoquinone, zeolite, and platelet-rich plasma in model of corrosive oesophagitis induced in rats (vol 92, pg 396, 2017)(Korean Surgical Society, 2017) Karaca, Gokhan; Aydin, Oktay; Pehlivanli, Faruk; Altunkaya, Canan; Uzunl, Hafize; Guler, Osman[Abstract No tAvailable]Öğe The effects of scalpel, harmonic scalpel and monopolar electrocautery on the healing of colonic anastomosis after colonic resection(Korean Surgical Society, 2016) Karaca, Gokhan; Pekcici, M. Recep; Altunkaya, Canan; Fidanci, Vildan; Kilinc, Aytul; Ozer, Huseyin; Guler, OsmanPurpose: In our study, the effects of harmonic scalpel, scalpel, and monopolar electrocautery usage on the health and healing of colon anastomosis after resection was investigated. Methods: In this study, 120 female albino Wistar rats were divided into 3 groups each containing 40 rats. Group A, resection with scalpel; group B, resection with monopolar electrocautery; group C, resection with harmonic scalpel. The groups were divided into 4 subgroups consisting of 10 rats and analysed in the postoperative 1st, 3rd, 5th, and 7th days. Anastomotic bursting pressures, hydroxyproline levels and histopathological parameters were surrogate parameters for evaluating wound healing. Results: The tissue hydroxyproline levels did not show any significant difference between the groups and subgroups. The mean bursting pressure of group A on the 5th day was significantly higher than groups B and C (P < 0.001). When the fibroblast and fibrosis scores were evaluated, scores of group C on the 5th day were significantly higher than the other groups, but the results of bursting pressures and biochemical parameters did not support the fibroblast and fibrosis scores. There were not any significant differences between the groups in other histopathologic parameters. Conclusion: The use of monopolar electrocautery needs more attention since the device causes tissue destruction. The obliterating effect of harmonic scalpel on luminal organs is an important problem, especially if an anastomosis is planned. Despite the disadvantages of scalpel, its efficacy on early wound healing is better than the other devices.Öğe Healing of Ischemic Colon Anastomosis in Rats Could Be Provided by Administering Dexpanthenol or Coenzyme Q10(Mdpi, 2018) Pehlivanli, Faruk; Aydin, Oktay; Karaca, Gokhan; Aydin, Gulcin; Devrim, Tuba; Bulut, Huri; Daphan, Cagatay ErdenBackground: In this study, the effectiveness of dexpanthenol and coenzyme Q10 (CoQ10) on the healing of ischemic colon anastomosis was investigated. Methods: Forty eight maleWistar Albino rats were divided into four equal groups (Sham-S, Sham-I, DXP, Q10). Following full layer colon resection, single layer colon anastomosis, without creating ischemia, was performed on the Sham-S group. The same experimental model was performed on remaining groups after ischemia was created. Intraperitoneal dexpanthenol and CoQ10 was administered to the DXP and Q10 groups once a day for three days. Ten days later, all colon anastomoses were investigated histopathologically and biochemically, as well as their burst pressure values, in all sacrificed rats. Results: The highest burst pressure value was observed in the Sham-S group, decreasing from high to low in the DXP, Q10, and Sham-I groups, respectively (p = 0.008). Furthermore, tissue hydroxyproline (p = 0.001) level values were significantly different among the groups. Additionally, histopathological analysis revealed a significant difference among groups regarding reepithelization (p = 0.027) and polymorphonuclear leukocyte density (p = 0.022). Conclusions: This preliminary study has shown that ischemia-reperfusion injury may impair the healing of colon anastomosis and it has been concluded that dexpanthenol and CoQ10 may have positive effects on the healing of ischemic colon anastomosis in rat, although re-epithelization may be adversely affected using CoQ10.Öğe Platelet-Rich Plasma May Offer a New Hope in Suppressed Wound Healing When Compared to Mesenchymal Stem Cells(Mdpi, 2018) Aydin, Oktay; Karaca, Gokhan; Pehlivanli, Faruk; Altunkaya, Canan; Uzun, Hafize; Ozden, Huseyin; Guler, OsmanBackground: The present study investigated the effectiveness of platelet-rich plasma (PRP) and mesenchymal stem cells (MSCs) in wound healing suppressed by corticosteroid in rats. Methods: Forty rats were separated into four groups. To disrupt the wound-healing processes, intraperitoneal single dose 10 mg/kg methylprednisolone was administered to all rats with the exception of Sham-S group. Then, full-thickness incision was performed to the abdominal skin of all animals, and PRP or MSCs were applied to the incision line except the Sham-S and Sham-M group animals. Ten days later, all animals were sacrificed to investigate: tissue collagenization, inflammation, and re-epithelialization grades histopathologically; and tissue hydroxyproline (HP), interleukin-1 beta (IL-1 beta), tumor necrosis factor-alpha levels biochemically. Results: Collagenization (p = 0.003) and inflammation grade (p = 0.002) values were higher in PR group. Tissue HP level value was found to be high in MC group (p < 0.001). Tissue IL-1 beta level value of Sham-M group was lower than those of other groups (p < 0.001). Conclusions: This preliminary study revealed that PRP could improve the histopathological grades in wound healing which was suppressed by corticosteroid in rats, while MSCs could show their therapeutic effects via biochemical route. These positive effects were more salient in PR group.Öğe Suprapubic Midline Extraperitoneal Approach for Widespread Retroperitoneal Abscess Originating from Anorectal Abscess(Southeastern Surgical Congress, 2018) Aydin, Oktay; Pehlivanli, Faruk; Karaca, Gokhan; Aydin, Gulcin; Ozler, Ismail; Daphan, CagatayÖğe The Healing Effects of The Topical Mesenchymal Stem Cell Application on Colonic Anastomosis Subjected to Ischemia Reperfusion Injury(Kafkas Univ, Veteriner Fakultesi Dergisi, 2021) Ozden, Huseyin; Karaca, Gokhan; Bulut, Huri; Niyaz, Mehmet; Gomec, Muhammed; Daphan, Cagatay E.Intestinal ischemia reperfusion injury (IRI) is a challenging problem and it adversely affects the healing of colonic anastomosis. Our experimental study aimed to investigate the role of mesenchymal stem cells (MSC) administration in the healing of colonic anastomosis. A total of 33 rats were grouped as Control, IRI and MSC treatment groups. Three rats were reserved for obtaining MSCs. Colonic resection and anastomosis procedure was performed in all groups. Anastomotic line was wrapped with MSCs impregnated spongostan after colonic anastomosis in the rats of the MSC treatment group. All rats were sacrificed and anastomotic line were sampled for examination on the post operative seventh day. Tissue hydroxyproline (HP) levels and anastomotic bursting pressures were statistically compared. Anastomotic bursting pressures were found to be significantly high in MSC treatment group rats. The lowest anastomotic bursting pressure was detected in IRI group rats. Hydroxyproline content of the anastomotic sites were also found to be significantly higher in the rats of the MSC treatment group when compared with the IRI group rats. Our study showed that the detrimental effects of IRI on the healing process of colonic anastomosis in an experimental model may be alleviated with the treatment of MSCs.Öğe What is the protective effect of metformin on rat ovary against ischemia-reperfusion injury?(Wiley, 2018) Sayan, Cemile Dayangan; Karaca, Gokhan; Ozkan, Zehra Sema; Tulmac, Ozlem B.; Isik, Asli Ceylan; Devrim, Tuba; Yeral, IlkinAimThe aim of this study was to investigate the protective effect of metformin on the rat ovary against ischemia-reperfusion injury. MethodsThirty-seven female Wistar albino rats were used in the study. The rats were divided into five groups, as follows: sham operation group (group 1); torsion group (group 2); torsion/detorsion+saline group (group 3); torsion/detorsion+low-dose metformin group (group 4); and torsion/detorsion+high-dose metformin group (group 5). The right ovary from each rat was evaluated histologically using hematoxylin-eosin staining, and the left ovaries were evaluated for tissue levels of the reduced-glutathione-to-oxidized-glutathione ratio, malondialdehyde (MDA), and caspase-3 activation. ResultsThe highest damage score was observed in group 3, and the lowest score was observed in group 1. The tissue caspase-3 activity levels of groups 2, 3, and 4 were significantly higher than those of group 1. The difference between group 1 and group 5 in terms of tissue caspase-3 activity was not significant (P=0.4). The reduced-glutathione-to-oxidized-glutathione ratio of group 1 was significantly higher than the ratios found in groups 2, 3, and 4. The tissue MDA level of group 1 was significantly lower than the levels found in groups 2, 3, 4, and 5. The tissue MDA level of group 5 was significantly lower than the levels in groups 3 and 4. ConclusionFrom both histopathological and biochemical analyses, the results of the study demonstrated that metformin has beneficial effects when it comes to attenuating ovarian ischemia-reperfusion injury.
