P53 related apoptosis in kidneys in CO2 pneumoperitoneum rat model: an immunohistochemical study

WOS: 000342440000009PubMed: 25034890Laparoscopic surgery techniques have been increasingly preferred to classic laparotomy by surgeons since 1987. However, this method may have some side effects on different intraabdominal organs including kidneys. The aim of this study is to evaluate the effects of different pressures of CO2 on p53 related apoptosis in kidneys. Totally 24 male rats were divided into four equal groups. CO2 is insufflated into rats' intraabdominal cavity in two different pressures of 10 and 20 mmHg during 1 h. However, in sham group, only cannula was inserted, but no gas was insufflated. After 1 h, 30 min reperfusion was applied. At last, the kidneys were excised and p53 expression and apoptosis were evaluated immunohistochemically. All the data revealed that the number of apoptotic cell in kidney' tubular cells significantly increases in proportion to CO2 pressure level. On the other hand, p53 expression was detected only in the highest pressure. Because the low CO2 pressured group' rats had no p53 expression in kidneys, we suggest that this method can be safely used for abdominal surgery. At the same time, increasing in the number of apoptotic cells parallel to pressure also suggest that CO2 pressure level and application time are very important parameters during CO2 pneumoperitoneum

Assesment of The Effect of Pentylenetetrazole-induced Kindling on Behavior and Emotional Learning in Rats

Objective: Pentylenetetrazol (PTZ)-induced kindling causes changes related with spatial learning, memory and behavior. However knowledge regarding its effects on emotional learning is unsufficient. This study aims to investigate the emotional learning, behavioral changes and the histological changes in the hippocampus using PTZ-kindling model. Materials and Methods: This study employes 34 wistar albino rats 24 for the experimental group and 10 for the control group. PTZ-kindling was initiated one week after the implantation of cortical electrodes. The experimental group received 35mg/kg PTZ intraperitoneally (ip) every other day for 38 days, while control group received ip saline in the same period. EEG and video recordings taken for 30 minutes after injection revealed seizures staged as 0-5. Kindling completed behavioral changes were assessed in the open field test, and emotional learning in the elevated T-maze test. The hippocampus was assessed with the method Kluver and Barrera Luxol Fast Blue. Results: PTZ-kindling did not affect emotional learning, but caused anxiety. Neuronal loss in the CA3 section and neuronal degeneration in the CA3 and CA1 section of hippocampus were observed. Conclusion: We concluded that PTZ-kindling causes anxiety-like behaviors while not affecting emotional learning which may have resulted from hippocampal neuronal damages

Effects of Carvacrol on Erythrocyte Deformability in Lower Extremity Ischemia Reperfusion Induced Rats

Arslan, Mustafa/0000-0003-4882-5063WOS: 000453220100047

The Effect of Different Doses Apelin 13 on Erythrocyte Deformability in Rats

WOS: 000532415800048

Effects of iron overload and exenatide on erythrocyte deformability in a rat model (conferenceObject)

WOS: 000360810100149

Effect of Fullerenol C60 on Erythrocyte Deformability During Ischaemia-Reperfusion Injury of Lower Extremity in Diabetic Rats

KARTAL, HAKAN/0000-0003-4539-0228WOS: 000495961100010Background: Fullerenol, a water-soluble C60-fullerene derivative synthesized by Chiang et al, has been demonstrated to be able to scavenge free radicals in vitro and in vivo. Although its protective effects have been already studied and shown in ischemia reperfusion (IR) injury, additional investigation is necessary for its effect on erythrocyte deformability. The purpose of our study was to look into the effects of fullerenol C60 on erythrocyte deformability in rat lower extremity ischemia reperfusion injury model. Materials and Methods: After approval of the Ethics Committee, 30 Wistar Albino rat were divided into 5 groups (n:6) as; Control (C), Diabetes (group D), diabetes+ fullerenol C60 group (DF), diabetes+ IR (group DIR) and diabetes IR+ fullerenol C60 (DIRF). 55 mg/kg streptozotocin was administered to the rats for diabetes. After the period of 72 hour, blood glucose concentration was mesured, 250 mg/dl and above were considered as diabetic rat. Four week after the formation of diabetes, rats were subjected to 2 hour ischemia and 2 hour reperfusion. Erythrocyte packs were prepared from heparinized blood samples and deformability measurements were performed. Results: The deformability index was significantly increased in diabetic rats; however, it was similar in group D, DF and DIRF. It was significantly increased in group DIR when compared to group C, D, DF and DIRF. The relative resistance was increased in I/R models. Conclusion: This study aimed to investigate the effects of IR on erythrocyte deformability which may lead to disturbance in blood flow and hence tissue perfusion in infrarenal rat aorta. We found that fullerenol C60 had beneficial effects by reversing undesirable effects of IR. In our opinion, further studies with larger volume are required to support our promising results

Effect of Irisin on Erythrocyte Deformability in Mice with Lower Limb Ischemia Reperfusion Injury

Arslan, Mustafa/0000-0003-4882-5063WOS: 000419806200099

Efect of Levosimendan and Nigella Sativa on Erythrocyte Deformability During Myocardial Ischaemia-Reperfusion Injury in Rats

Arslan, Mustafa/0000-0003-4882-5063WOS: 000419806200071

Assessment of the effects of levosimendan and thymoquinone on lung injury after myocardial ischemia reperfusion in rats

Arslan, Mustafa/0000-0003-4882-5063WOS: 000433205000001PubMed: 29861626Aim: The aim of this study was to investigate the effects of levosimendan and thymoquinone (TQ) on lung injury after myocardial ischemia/reperfusion (I/R). Materials and methods: Twenty-four Wistar albino rats were included in the study. The animals were randomly assigned to 1 of 4 experimental groups. In Group C (control group), left anterior descending artery was not occluded or reperfused. Myocardial I/R was induced by ligation of the left anterior descending artery for 30 min, followed by 2 h of reperfusion in the I/R, I/R-levosimendan (24 mu g/kg) (IRL) group, and I/R-thymoquinone (0.2 mL/kg) (IRTQ) group. Tissue samples taken from the lungs of rats were histochemically stained with H&E and immunohistochemically stained with p53, Bcl 2, Bax, and caspase 3 primer antibodies. Results: Increased expression of p53 and Bax was observed (4+), especially in the I/R group. In IRTQ and IRL groups, expression was also observed at various locations (2+, 3+). H&E staining revealed that that the lungs were severely damaged and the walls of the alveoli were too thick, the number of areas examined was increased during the evaluation. Caspase 3 expression was observed to be at an (1+, 2+) intensity that was usually weak and diffuse in multiple areas. Bcl 2 was not found to be expressed in any of the tissues. H&E staining revealed that that the lungs were severely damaged in the I/R group, with the walls of the channels and alveoli thickened and edematous, and also an intense inflammatory cell migration was observed. Immunohistochemical staining was more prominent in inflammatory areas and structures around the terminal bronchioles. Conclusion: The findings in our study have shown that administration of levosimendan and TQ during I/R increases expression of caspase 3, p53, and Bax in lung tissue and has a protective effect on lung as distant organ. We suggest that findings of this study be elucidated with further large-scale clinical studies

Effects of lornoxicam and intravenous ibuprofen on erythrocyte deformability and hepatic and renal blood flow in rats

Arslan, Mustafa/0000-0003-4882-5063; AYDIN, Muhammed Enes/0000-0001-8491-6566WOS: 000380738100001PubMed: 27536068Background: Change in blood supply is held responsible for anesthesia-related abnormal tissue and organ perfusion. Decreased erythrocyte deformability and increased aggregation may be detected after surgery performed under general anesthesia. It was shown that nonsteroidal anti-inflammatory drugs decrease erythrocyte deformability. Lornoxicam and/or intravenous (iv) ibuprofen are commonly preferred analgesic agents for postoperative pain management. In this study, we aimed to investigate the effects of lornoxicam (2 mg/kg, iv) and ibuprofen (30 mg/kg, iv) on erythrocyte deformability, as well as hepatic and renal blood flows, in male rats. Methods: Eighteen male Wistar albino rats were randomly divided into three groups as follows: iv lornoxicam-treated group (Group L), iv ibuprofen-treated group (Group I), and control group (Group C). Drug administration was carried out by the iv route in all groups except Group C. Hepatic and renal blood flows were studied by laser Doppler, and euthanasia was performed via intra-abdominal blood uptake. Erythrocyte deformability was measured using a constant-flow filtrometry system. Results: Lornoxicam and ibuprofen increased the relative resistance, which is an indicator of erythrocyte deformability, of rats (P=0.016). Comparison of the results from Group L and Group I revealed no statistically significant differences (P=0.694), although the erythrocyte deformability levels in Group L and Group I were statistically higher than the results observed in Group C (P=0.018 and P=0.008, respectively). Hepatic and renal blood flows were significantly lower than the same in Group C. Conclusion: We believe that lornoxicam and ibuprofen may lead to functional disorders related to renal and liver tissue perfusion secondary to both decreased blood flow and erythrocyte deformability. Further studies regarding these issues are thought to be essential.Gazi University Scientific Research Committee [01/2016-3]This study was supported by a grant from the Gazi University Scientific Research Committee (number 01/2016-3)