Browsing by Author "Katar, Muzaffer"

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    Citation - WoS: 6
    Citation - Scopus: 6
    Etomidate Alleviates Ovarian Ischemia-Reperfusion Injury in Rats
    (Turkish Assoc Trauma Emergency Surgery, 2024) Katar, Muzaffer; Gevrek, Fikret; Unsal, Velid; Tapar, Hakan; Karaman, Tugba; Karaman, Serkan; Balta, Mehtap
    BACKGROUND: This study investigates the protective effects of etomidate against oxidative damage in an experimental model of ovarian ischemia-reperfusion injury. METHODS: A total of 24 female rats were randomized into three groups. Group 1 served as the control. Group 2 underwent an ovarian torsion/detorsion procedure. Group 3 underwent similar procedures as Group 2; additionally, 4 mg/kg of etomidate was administered intraperitoneally 30 minutes before ovarian detorsion. Blood samples were analyzed for lipid peroxidation, pro-inflamma- tory cytokine levels, and antioxidant enzyme activity.Furthermore, histopathological scoring was performed to evaluate tissue damage in the ovaries. RESULTS: Biochemical analysis of blood samples revealed reductions in pro-inflammatory cytokines, including interleukin-1 Beta (IL- 1β), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α), in Group 3 compared to Group 2 (p=0.005, p=0.016, and p<0.001, respectively). Additionally, a decrease in malondialdehyde (MDA) levels was observed in Group 3 compared to Group 2 (p<0.001). In contrast, activities of antioxidant enzymes, including superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX), were signifi- cantly increased in Group 3 compared to Group 2 (p=0.031 and p=0.001, respectively). Furthermore, Group 3 demonstrated notable reductions in histopathological scores for follicular degeneration, vascular occlusion, bleeding, and inflammation compared to Group 2 (p<0.001, p<0.001, p<0.001, and p=0.001, respectively). CONCLUSION: Etomidate alleviates ischemia-reperfusion injury in a rat ovarian torsion-detorsion model by improving both histo- pathological and biochemical outcomes.
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    Citation - WoS: 7
    Citation - Scopus: 6
    Protective effects of dexmedetomidine on ischaemia-reperfusion injury in an experimental rat model of priapism
    (Andrologia, 2021) Unsal, Velid; Kölükçü, Engin; S. Parlaktaş, Bekir; Kölükçü, Vildan; Fırat, Fatih; Deresoy, Faik A.; Katar, Muzaffer; Kuyucu, Yunus Emre
    The study aimed to investigate the effects of dexmedetomidine against ischaemia-reperfusion injury occurring after priapism in a model of induced-priapism in rats. A total of 18 male rats were randomised into three groups. Group 1 was the control group. A priapism model was performed rats in Group 2 and then ischaemia-reperfusion injury was evaluated. Group 3 had similar procedures to the rats in Group 2. Rats in Group 3 additionally had 100 μg/kg dexmedetomidine administered intraperitoneally immediately after reperfusion. Blood and tissue samples were analysed. Biochemical analysis of blood samples revealed a decrease in the levels of the pro-inflammatory cytokines including interleukin-1 beta (IL-1 Beta), interleukin-6 (IL-6), and tumour necrosis factor-alpha (TNF-alpha) in Group 3 compared to Group 2 (p:.04, p:.009 and p:.009, respectively). Similarly, the highest malondialdehyde (MDA) level was in Group 2 (p:.002). The levels of antioxidant enzymes superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities were significantly higher in Group 3 than that of Group 2 (p:.037 and p:.045, respectively). Direct microscopic examinations revealed positive changes in desquamation, oedema, inflammation and vasocongestion scores in Group 3 compared to Group 2 (p:.007, p:.008, p:.007 and p:.006, respectively). Dexmedetomidine has a protective effect against ischaemia-reperfusion injury in penile tissue.
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    Citation - WoS: 26
    Citation - Scopus: 26
    Milrinone ameliorates ischaemia-reperfusion injury in experimental testicular torsion/detorsion rat model
    (Andrologia, 2021) Unsal, Velid; Kölükçü, Engin; Atılgan, Doğan; Uluocak, Nihat; Deresoy, Faik Alev; Katar, Muzaffer
    This experimental study aims to evaluate the efficacy of milrinone against ischaemia-reperfusion injury due to testicular torsion/detorsion. Group 1 was defined as the control group. Testicular torsion/detorsion model was performed in Group 2. Group 3 had similar procedures to the rats in Group 2. In addition, 0.5 mg/kg of milrinone was administered intraperitoneally immediately after testicular torsion in Group 3. Histopathological examinations indicated a dramatic improvement in terms of inflammation, haemorrhage, oedema, congestion, Cosentino and Johnson scores in Group 3 compared to Group 2 (p =.037, p =.045, p =.018, p =.040, p =.033 and p =.03 respectively). Blood biochemical analyses, superoxide dismutase (SOD), glutathione peroxidase (GSH-px) activity and total antioxidant status (TAS) levels increased significantly in Group 3 compared to Group 2 (p =.001, p =.024 and p <.001). Malondialdehyde (MDA), protein carbonyl (PC), interleukin 1beta (IL-1beta), tumour necrosis factor-alpha (TNF-alpha) and total oxidant status (TOS) levels decreased in Group 3 compared to Group 2 (p =.001, p =.018, p <.001, p =.036 and p =.002 respectively). Tissue biochemical analyses determined an increase in SOD and GSH-px activity in Group 3 compared to Group 2, while PC and MDA levels were reduced (p =.001, p <.001, p =.038 and p <.001 respectively). Milrinone attenuates ischaemia-reperfusion injury that causes highly harmful effects due to testicular torsion/detorsion.
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    Dapsone Can Be a New Treatment Option for Reducing the Detrimental Effect of Priapism
    (2021) Uluocak, Nihat; Kolukcu, Engin; Parlaktaş, Bekir Süha; Deresoy, Faik Alev; Katar, Muzaffer; Unsal, Velid
    Aim: This study aims to analyze the effect of dapsone against ischaemia-reperfusion injury on corporal tissue in a model of induced-priapism in rats. Material and Method: A total of 24 rats were randomized into three groups. Group 1 was defined as the control group. Ischaemia-reperfusion injury was evaluated following the priapism model in Group 2. Group 3 had similar procedures to the rats in Group 2. Group 3 additionally had 12.5 mg/kg dapsone administered intraperitoneally 30 minutes after priapism. Results: Biochemical analysis of blood indicated a significant increase in Group 3 in terms of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) activity and total antioxidant status (TAS) values compared with Group 2 (p:0.002, p:0.029 and p:0.009, respectively). The highest values of malondialdehyde (MDA), protein carbonyl (PC) and total oxidant status (TOS) were recorded in Group 2 (p<0.001). Interleukin 1beta (IL-1beta), Interleukin 6 (IL-6) and tumor necrosis factor alpha (TNF alpha) levels were found to be significantly decreased in Group 3 compared with Group 2 (p:0.022, p:0.049 and p<0.001, respectively). Direct microscopic evaluation determined an improvement in inflammation, edema, desquamation and vasocongestion scores in Group 3 compared to Group 2 (p<0.05). Conclusion: Dapsone has a protective effect on ischaemia-reperfusion injury in corporal tissue.
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    Citation - WoS: 1
    Renoprotective effect of diacerein in rats with partial unilateral ureteral obstruction model
    (Walter de Gruyter, 2024) Katar, Muzaffer; Gevrek, Fikret; Fırat, Fatih; Kölükçü, Engin; Unsal, Velıd
    Objectives: We aimed to analyze the effects of diacerein in a rat model of partial unilateral ureteral obstruction (PUUO). Methods: We randomly divided 24 female rats into three groups. Control group, PUUO group and PUUO + diacerein group. The PUUO group was subjected to the PUUO model for seven days. The PUUO + diacerein group received oral diacerein (80 mg/kg) for seven days. Spectrophotometric methods were employed to measure oxidative stress parameters, including malondialdehyde (MDA), protein carbonyl (PC) and antioxidant enzyme levels, including glutathione peroxidase (GSH-Px), and superoxide dismutase (SOD), while indicators of renal function, such as kidney injury molecule-1 (KIM-1) and neutrophil gelatinous- associated lipocalin (NGAL), along with inflammatory parameters interleukin-1 beta (IL-1beta), tumor necrosis factor-alpha (TNF-alpha), and interleukin-6 (IL-6), were assessed using the ELISA method. Inflammatory parameters were measured in blood samples, and other parameters were analyzed in kidney tissue. Hematoxylin-eosin method examinations were used for histological analyses. Results: IL-1beta, TNF-alpha, and IL-6 levels were found to be significantly decreased in the PUUO + diacerein group compared to the PUUO group (p=0.006, p=0.002 and p=0.001, respectively). In the PUUO + diacerein group, GSH-Px and SOD activities increased compared with the PUUO group (p=0.031 and p=0.037, respectively). We also observed a significant improvement in renal function parameters, such as KIM-1 and NGAL levels in the PUUO + diacerein group compared to PUUO (p=0.002 and p=0.012, respectively). The PC and MDA levels were highest in the PUUO group (p<0.001). Similarly, the histopathologic tissue damage was the most prominent PUUO group (p<0.001). Conclusions: Our study found that diacerein is a highly effective pharmacologic agent in alleviating oxidative dam- age in PUUO model rats.
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    Citation - WoS: 1
    Citation - Scopus: 1
    Possible Protective Effect of Remifentanil Against Testicular Ischemia-Reperfusion Injury
    (Walter de Gruyter GmbH, 2024) Katar, Muzaffer; Gevrek, Fikret; Fırat, Fatih; Unsal, Velıd; Tapar, Hakan; Karaman, Tugba; Kuyucu, Yunus Emre
    Objectives: This study aims to evaluate the protective effi- cacy of remifentanil against testicular ischemia-reperfusion injury. Methods: The study included 24 male rats. The rats were randomized into three groups: Group 1 was the control group. Group 2 was subjected to a testicular torsion/ detorsion model. Group 3 underwent similar procedures and additionally received remifentanil (0.6 μg/kg/min) intrave- nously for the first 20 min of reperfusion. Blood samples were taken for biochemical analyses, and orchiectomy was performed for histopathologic examination. Results: Biochemical analysis of blood samples showed a significant increase in antioxidant enzyme activity, including superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in Group 3 compared to Group 2 (p:0.004 and p:0.002, respectively). There was a dramatic decrease in the levels of proinflammatory cytokines, including interleukin-1 beta (IL-1 Beta), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-alpha) in Group 3 compared to Group 2 (p:0.001, p:0.046, and p:0.004, respectively). Similarly, malondialdehyde (MDA) levels decreased in Group 3 compared to Group 2 (p:0.004). Histopathologic examination of Group 3 rats showed positive changes in inflammation, hemorrhage, edema, and conges- tion levels compared to Group 2 (p<0.001). Similarly, there was a positive effect on the Johnsen and Cosentino score in Group 3 compared to Group 2 (p:0.001 and p<0.001, respectively). Conclusions: In our study, it has been documented that remifentanil protects against testicular ischemia-reperfusion injury.