Browsing by Author "Unsal, V."

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Dexmedetomidine Protects the Uterus Against Ischemia-Reperfusion Injury in Rats
(Verduci Editore s.r.l, 2024) Kölükçü, V.; Balta, M.G.; Tapar, H.; Karaman, T.; Karaman, S.; Unsal, V.; Katar, M.
OBJECTIVE: This study aimed to analyze the histopathological and biochemical effects of dexmedetomidine on the rat uteri exposed to experimental ischemia-reperfusion injury. MATERIALS AND METHODS: Twenty-four female rats were randomly divided into three groups. Group 1 was defined as the control group. An experimental uterine ischemia-reperfusion model was created in Group 2. Group 3 was assigned as the treatment group. Similar uterine ischemia-reperfusion models were created for the rats in Group 3, and then, unlike the other groups, 100 μg/kg of dexmedetomidine was administered intraperitoneally immediately after the onset of reperfusion. In blood biochemical analysis, superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) activities and malondialdehyde (MDA), interleukin 1beta (IL-1β), interleukin 6 (IL-6) and tumor necrosis factor-alpha (TNF-α) levels were measured. In the histopathological analyses, endometrial epithelial glandular changes (leukocytosis, cell degeneration) and endometrial stromal changes (congestion, edema) were analyzed using the tissue damage scoring system. RESULTS: It was observed that IL-1β, IL-6, and TNF-α levels were significantly suppressed in Group 3 compared to Group 2 (p=0.001, p<0.001 and p=0.001, respectively). MDA level was noted as the highest in Group 2. The MDA value in Group 3 was measured at 5.37±0.82, which was significantly decreased compared to Group 2 (p<0.001). An increase in antioxidant enzyme activities (SOD and GSH-PX) was observed in Group 3 compared to Group 2 (p=0.001 and p=0.006, respectively). In our histopathological analysis, a significant improvement in endometrial epithelial glandular and endometrial stromal changes was revealed in Group 3 compared to Group 2 (p<0.001). CONCLUSIONS: In our study, it has been documented that dexmedetomidine protects the uterine tissue against ischemia-reperfusion injury. © 2024 Verduci Editore s.r.l. All rights reserved.
Investigation of the Relationship Cellular and Physiological Degeneration in the Mandible With Aqp1 and Aqp3 Membrane Proteins
(De Gruyter Open Ltd, 2020) Çiçek, M.; Unsal, V.; Tümer, M.K.
Objective: In this study, we aimed to investigate the changes in the levels of oxidative stress and antioxidant enzymes on the mandibular bone caused by the expression of aquaporin-1 and aquaporin-3 proteins. Material and method: 14 Balb/C white mice were divided into two groups of seven, based on whether they are young or old. Mandibular tissue samples were taken for biochemical and histological analysis. Results: Findings of our study has shown that, AQP-1 and AQP-3 immunoreactivity significantly decreased in mandibular bone tissues of aged mice in comparison to younger mice (p < 0.05). MDA and AOPP levels, which are the indicators of oxidative stress, increased in elderly mice and antioxidant defense system SOD enzyme activity was decreased (p < 0.05). The TNF-α cytokine level, which is the indicator for inflammations, was found to be higher in older mice than in young mice (p < 0.05). Conclusion: As a result, it was observed that cellular damage, disruption in water – electrolyte balance and increased inflammation that occur during the natural process of aging had caused serious and irreversible disturbances. © 2020 De Gruyter. All rights reserved.