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Öğe Effects of diode laser application on inflammation and mpo in periodontal tissues in a rat model(Univ Sao Paulo Fac Odontologia Bauru, 2018) Uslu, Mustafa Ozay; Eltas, Abubekir; Marakoglu, Ismail; Dundar, Serkan; Sahin, Kazim; Ozercan, Ibrahim HanifiObjective: In this study, we aimed to histologically and immunologically evaluate the effect of diode laser treatment when applied adjunctive to scaling and root planing (SRP) in an experimental periodontitis model. Materials and methods: We used Wistar-Albino rats (n=60) with average weight of 230 g. Experimental periodontitis was induced by ligature at the right and left first mandibular molar teeth in all rats. After 11 days, the ligature was removed and rats were divided into two groups. The control group (n=30) received only SRP treatment, while the laser group (n=30) received a diode laser (GaAlAs, 810 nm, 1 W, 10 J, 20 s) treatment adjunctive to SRP. Ten rats in each group were sacrificed after 7, 15, and 30 days. Histopathological examination was performed in the left mandible of rats. Myeloperoxidase (MPO) was evaluated by western blot in the gingival specimens from the right mandible. Results: MPO levels in the laser group were statistically significantly lower compared with the control group (p <= 0.05). There was no statistically significance at any time between MPO levels in the control group (p>0.05). MPO levels in the laser group at the 7th day were statistically significantly higher compared to the 15th (p <= 0.05) and the 30th day (p <= 0.05). Inflammatory cell infiltration decreased over time in both groups and was statistically significantly lower in the laser group than in the control group at all times (p <= 0.01). Conclusions: Within the limits of this study, we suggest that diode laser application is an adjunctive treatment because it reduced inflammation and MPO when applied in addition to SRP. On the other hand, more studies are needed for the assessment of the effects of diode laser application to periodontal tissues.Öğe Immunohistochemical evaluation of the effects of nebivolol on intimal hyperplasia following endothelial injury(Tubitak Scientific & Technological Research Council Turkey, 2011) Akar, Ilker; Rahman, Ali; Colak, M. Cengiz; Ustundag, Bilal; Ozercan, Ibrahim Hanifi; Uysal, AyhanAim: Intimal hyperplasia is a vascular remodeling process. It is a clinical problem that forms in the vascular wall as a result of smooth muscle cell migration, proliferation, and extracellular matrix accumulation. In this study we examined the immunohistochemical evaluation of the effects of nebivolol on intimal hyperplasia in damaged endothelial tissue. Materials and methods: The study was conducted using 21 rabbits equally divided into 3 groups: control, solvent, and nebivolol. The rabbits in the control group only underwent balloon injury of the abdominal aorta. The rabbits in the solvent group and nebivolol group underwent balloon injury and were treated with solvent and nebivolol intraperitoneally during the study. At the end of the study, the abdominal aortas were harvested. The intimal and medial areas were measured and the intima/media ratios were calculated. Tissue nitric oxide levels were determined and immunohistochemical findings were evaluated. Results: Statistically there were no differences between the control and solvent groups with respect to the intimal and medial areas, intima/media ratios, or the tissue nitric oxide (NO) levels. The neointimal thickening was significantly less in the nebivolol group than in the control and solvent groups (P < 0.001). Intima/media ratio was decreased in the nebivolol group (P < 0.001). Tissue nitric oxide levels were greater in the nebivolol group than in the control and solvent groups (P < 0.01). Immunohistochemical data in the nebivolol group were significantly lower as compared with the other groups (P < 0.05). Conclusion: Nebivolol may be a useful agent in early restenosis after vascular reconstructive procedures.Öğe The inducing of caspase and Bcl-2 pathway with royal jelly decreases the muscle tissue damage exposed with fluoride in rats(Springer Heidelberg, 2022) Aslan, Abdullah; Can, Muhammed Ismail; Gok, Ozlem; Beyaz, Seda; Parlak, Gozde; Ozercan, Ibrahim HanifiIn this study, 42 Wistar albino male rats (n = 42, 8 weeks old) were used. Rats were divided into 6 groups and 7 rats included each group. Groups: (i) Control group: Standard diet; (ii) RJ (royal jelly) group: Standard diet + royal jelly; (iii) F50 group: Standard diet + 50 mg/kg fluoride; (iv): F100 group: Standard diet + 100 mg/kg fluoride; (v) F50+RJ group: Standard diet + 50 mg/kg fluoride + royal jelly; (vi): F100+RJ group: Standard diet + 100 mg/kg fluoride + royal jelly. After 8 weeks, the rats were decapitated, and their muscle tissues were removed. Expression levels of Caspase-3, Caspase-6, Bax, tumor necrosis factor-alpha (TNF-alpha), interleukin 1 alpha (IL1-alpha) and Bcl-2 proteins in muscle tissue were determined by western blotting method. Histopathological analyses were also performed on the muscle tissue. Malondialdehyde (MDA), glutathione (GSH) and catalase (CAT) analyses were determined by a spectrophotometer. According to the obtained results, Bcl-2, TNF-alpha and IL1-alpha protein expression was increased in damage groups compared to the control and royal jelly groups, while Caspase-3, Caspase-6 and Bax protein expression levels decreased in damage groups. MDA level increased in damage groups compared to the control and royal jelly groups, while CAT and GSH levels increased with royal jelly application in royal jelly-given group in comparison to the flouride-exposed group. According to histopathological analysis results, edema and inflammatory cell formations were found in the injury groups, a tendency to decrease in these injuries was observed in the treatment groups. Based on these results, we can say that royal jelly has protective effects on muscle tissue against fluoride damage.Öğe Molecular discrimination of Echinococcus granulosus and Echinococcus multilocularis by sequencing and a new PCR-RFLP method with the potential use for other Echinococcus species(Tubitak Scientific & Technological Research Council Turkey, 2014) Sakalar, Cagri; Kuk, Salih; Erensoy, Ahmet; Dagli, Adile Ferda; Ozercan, Ibrahim Hanifi; Cetinkaya, Ulfet; Yazar, SuleymanBackground/aim: To develop a novel polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) protocol using a new genomic marker sequence and a novel set of restriction enzymes in order to detect and discriminate 2 Echinococcus species, E. granulosus and E. multilocularis, found in formalin-fixed paraffin-embedded (FFPE) human tissues. Materials and methods: DNA was isolated from 11 FFPE human tissue samples positive for cystic echinococcosis or alveolar echinococcosis. A mitochondrial genomic marker region was amplified and sequenced using a novel primer pair and a new PCR-RFLP protocol was developed for the detection and discrimination of E. granulosus and E. multilocularis using a set of restriction enzymes including AccI, MboI, MboII, and TsoI. Results: The selected marker region was amplified using DNA isolated from FFPE human tissue samples positive for cystic echinococcosis or alveolar echinococcosis and the discrimination of E. granulosus and E. multilocularis was accomplished by use of the novel PCR-RFLP method. Conclusion: In this PCR-RFLP protocol, use of any single restriction enzyme is enough for the discrimination of E. granulosus and E. multilocularis. The PCR-RFLP protocol can be potentially used for the discrimination of 5 other Echinococcus species: E. oligarthus, E. shiquicus, E. ortleppi, E. canadensis, and E. vogeli.Öğe A new approach on the regulation of NF-?B and Bax protein signaling pathway activation by royal jelly in fluoride-induced pancreas damage in rats(Churchill Livingstone, 2022) Aslan, Abdullah; Can, Muhammed Ismail; Beyaz, Seda; Gok, Ozlem; Parlak, Gozde; Gundogdu, Ramazan; Ozercan, Ibrahim HanifiForty-two healthy adult male rats (Wistar albino, n = 42, 8 weeks old, starting weights 200-250 g) employed in this study were subdivided into six groups randomly with seven rats per group as follows: (i) Control group: received standard diet; (ii) RJ group: received standard diet supplemented with royal jelly; (iii) F50 group: received standard diet supplemented with fluoride (50 mg/kg BW); (iv) F100 group: received standard diet supplemented with fluoride (100 mg/kg BW); (v) F50 +RJ group: received standard diet supplemented with fluoride (50 mg/kg BW) and royal jelly; (iv) F100 +RJ group: received standard diet supplemented with fluoride (100 mg/kg BW) and royal jelly. The study continued for a total of eight weeks. Western blot analysis was conducted to determine the post-translational expression levels of NF-kappa B, Bax, Bcl-2, TNF-alpha, Caspase-3 and Caspase-6 proteins in pancreas tissue. The pancreatic tissue was subjected to histopathological evaluation. Furthermore, MDA, GSH and CAT activities were examined by spectrophotometric analyzes. Our findings demonstrate that, compared to the control and RJ groups, Bcl-2 protein expression was augmented and, conversely, Caspase-6, Caspase-3 and Bax protein levels were decreased upon fluoride treatment. A statistically significant increase in TNF-alpha and NF-kappa B protein expressions was observed in the groups with fluoride-induced damage compared to the control and RJ groups. The MDA levels were increased in all fluoride-treated rats compared to those in the control and RJ groups, whereas the CAT and GSH activities were reduced in all rats with fluoride-induced damage. Although there was not a great difference between the groups regarding histopath-ological findings, there was a tendency to decrease in the rate of damage upon royal jelly treatment.Öğe Paricalcitol inhibits the Wnt/beta-catenin signaling pathway and ameliorates experimentally induced arthritis(Tubitak Scientific & Technological Research Council Turkey, 2018) Yolbas, Servet; Yildirim, Ahmet; Tektemur, Ahmet; Celik, Zulfinaz Betul; Onalan Etem, Ebru; Ozercan, Ibrahim Hanifi; Akin, Mehmet MustafaBackground/aim: The Wnt/beta-catenin pathway has important biological activities, including the differentiation of cells and joint formations. The aim of our study was to determine the effect of paricalcitol on experimentally induced arthritis. Materials and methods: Type II collagen combined with Freund's adjuvant was applied to induce arthritis in Wistar albino female rats. Paricalcitol (0.3 mu g/kg daily) was subcutaneously injected starting 1 day after collagen applications (prophylactic group) or 1 day after the onset of arthritis (therapeutic group), until day 29. Results: The 29th day arthritis scores were lower compared to the 13th day scores in the paricalcitol groups (P < 0.05), while they were higher in the arthritis group (P < 0.05). Marked cartilage-bone destruction and extensive perisynovial inflammation were detected in the arthritis group. Decreased cartilage-bone destruction and perisynovial inflammation in the paws were observed in the paricalcitol groups. The tissue mRNA levels of DKK1, Wnt5a, and axin-2 were higher in the arthritis group than in the control group. In the paricalcitol groups, mRNA expressions were lower than in the arthritis group. Conclusion: The present study shows that the Wnt/beta-catenin signaling pathway is active in arthritis. Moreover, paricalcitol ameliorates arthritis via inhibiting the Wnt/beta B-catenin pathway. Paricalcitol and the Wnt/beta-catenin pathway are candidates for research in human rheumatoid arthritis.Öğe Paricalcitol inhibits the wnt/beta-catenin signaling pathway and ameliorates experimentally inducedarthritis(Tubıtak scıentıfıc & technıcal research councıl turkey, ataturk bulvarı no 221, kavaklıdere, ankara, 00000, turkey, 2018) Yolbas, Servet; Yildirim, Ahmet; Tektemur, Ahmet; Celik, Zulfinaz Betul; Onalan Etem, Ebru; Ozercan, Ibrahim Hanifi; Akin, Mehmet Mustafa; Koca, Suleyman SerdarBackground/aim: The Wnt/beta-catenin pathway has important biological activities, including the differentiation of cells and joint formations. The aim of our study was to determine the effect of paricalcitol on experimentally induced arthritis. Materials and methods: Type II collagen combined with Freund's adjuvant was applied to induce arthritis in Wistar albino female rats. Paricalcitol (0.3 mu g/kg daily) was subcutaneously injected starting 1 day after collagen applications (prophylactic group) or 1 day after the onset of arthritis (therapeutic group), until day 29. Results: The 29th day arthritis scores were lower compared to the 13th day scores in the paricalcitol groups (P < 0.05), while they were higher in the arthritis group (P < 0.05). Marked cartilage-bone destruction and extensive perisynovial inflammation were detected in the arthritis group. Decreased cartilage-bone destruction and perisynovial inflammation in the paws were observed in the paricalcitol groups. The tissue mRNA levels of DKK1, Wnt5a, and axin-2 were higher in the arthritis group than in the control group. In the paricalcitol groups, mRNA expressions were lower than in the arthritis group. Conclusion: The present study shows that the Wnt/beta-catenin signaling pathway is active in arthritis. Moreover, paricalcitol ameliorates arthritis via inhibiting the Wnt/beta B-catenin pathway. Paricalcitol and the Wnt/beta-catenin pathway are candidates for research in human rheumatoid arthritis.Öğe Protective effect of royal jelly on fluoride-induced nephrotoxicity in rats via the some protein biomarkers signalling pathways: a new approach for kidney damage(Taylor & Francis Ltd, 2022) Aslan, Abdullah; Beyaz, Seda; Gok, Ozlem; Can, Muhammed Ismail; Parlak, Gozde; Gundogdu, Ramazan; Ozercan, Ibrahim HanifiIntroduction Protective effect of royal jelly (RJ) on fluoride-induced nephrotoxicity was investigated in this study. Methods 42 healthy male Wistar rats (n = 42, 8 weeks of age) were divided equally into 6 groups with 7 rats in each; (1) Group-1: Controls fed with standard diet; (2) Group-2: RJ [100 mg/kg] bw (body weight), by oral gavage; (3) Group-3: Fluoride [50 mg/kg] bw, in drinking water; (4) Group-4: Fluoride [100 mg/kg] bw, in drinking water; (5) Group-5: RJ [100 mg/kg] bw, by oral gavage + Fluoride [50 mg/kg] bw, in drinking water; (6) Group-6: RJ [100 mg/kg] bw, by oral gavage + Fluoride [100 mg/kg] bw, in drinking water. After 8 weeks, all rats were decapitated and their kidney tissues were removed for further analysis. The protein expression levels of caspase-3, caspase-6, caspase-9, Bcl-2, Bax, VEGF, GSK-3, BDNF, COX-2 and TNF-alpha proteins in kidney tissue were analysed by western blotting technique Results RJ increased Bcl-2, COX-2, GSK-3, TNF-alpha and VEGF protein levels and a decreased caspase-3, caspase -6, caspase-9, Bax and BDNF protein levels in fluoride-treated rats. Conclusion RJ application may have a promising therapeutical potential in the treatment of many diseases in the future by reducing kidney damage.Öğe Royal jelly abrogates flouride-induced oxidative damage in rat heart tissue by activating of the nrf-2/NF-?B and bcl-2/bax pathway(Taylor & Francis Ltd, 2021) Aslan, Abdullah; Beyaz, Seda; Gok, Ozlem; Can, Muhammed Ismail; Parlak, Gozde; Ozercan, Ibrahim Hanifi; Gundogdu, RamazanRoyal jelly is known to strengthen memory, provide antioxidative, antidiabetic, antitumor, anticancer, antibacterial, antiinflammatory, antihypertensive. In this study, 42 rats (n = 42) were used, and these rats were divided into 6 groups of 7 rats each. Groups: (i) Control Group: Group fed with standard diet; (ii) Royal Jelly (RJ) Group: RJ (100 mg/kg bw, gavage); (iii) F50 Group: Fluoride (50 mg/kg bw, drinking water); (iv) F100 Group: F (100 mg/kg bw, drinking water); (v) F50 + RJ Group: F (50 mg/kg bw, drinking water) + RJ (100 mg/kg bw, gavage); (vi) F100 + RJ Group: F (100 mg/kg bw, drinking water) + RJ (100 mg/kg bw, gavage). The rats were decapitated after 8 weeks, and their heart tissues were taken and examined. Lipid peroxidation by MDA (malondialdehyde) analyzes, GSH (glutathione) level and catalase activity were determined by spectrophotometer. Protein expression levels of caspase-3, caspase-6, caspase-9, Bcl-2, Bax, BDNF, Gsk-3, Nrf-2 and NF-kappa B proteins in heart tissue were determined by western blotting technique and hearth tissue evaluated by histopathologically. As a result, MDA levels, Bcl-2, Gsk-3 and NF-kappa B protein expression levels were reduced, whereas GSH levels, caspase-3, caspase-9, caspase-6, Bax, BDNF and Nrf-2 protein levels were increased in the F50 + RJ and F100 + RJ groups compared to the F50 and F100 groups. According to the results of this study, it has been concluded that Royal jelly has the potential to be developed in to a drug for treatment of heart diseases in addition to providing protection against heart damage.Öğe Royal jelly protects brain tissue against fluoride-induced damage by activating Bcl-2/NF-?B/caspase-3/caspase-6/Bax and Erk signaling pathways in rats(Springer Heidelberg, 2023) Aslan, Abdullah; Beyaz, Seda; Gok, Ozlem; Parlak, Gozde; Can, Muhammed Ismail; Agca, Can Ali; Ozercan, Ibrahim HanifiThis study is aimed at determining whether royal jelly (RJ) which has a powerful antioxidant property prevents fluoride-induced brain tissue damage and exploring whether Bcl-2/NF-kappa B/ and caspase-3/caspase-6/Bax/Erk pathways play a critical role in the neuroprotective effect of RJ. Wistar albino rats were chosen for the study, and they were randomly distributed into six groups: (i) control; (ii) royal jelly; (iii) fluoride-50; (iv) fluoride-100; (v) fluoride-50 + royal jelly; (vi) fluoride-100 + royal jelly. We established fluoride-induced brain tissue damage with 8-week-old male Wistar albino rats by administration of fluoride exposure (either 50 mg/kg or 100 mg/kg bw) through drinking water for 8 weeks. Then, the study duration is for 56 days where the rats were treated with or without RJ (100 mg/kg bw) through oral gavage. The effects of RJ on glutathione (GSH), catalase activity (CAT), and malondialdehyde (MDA) levels were determined via spectrophotometer. Western blot analysis was performed to investigate the effects of royal jelly on the protein expression levels of Bax, caspase-3, caspase-6, Bcl-2, NF-kappa B, COX-2, and Erk. It was also studied the effects of RJ on histopathological alterations in fluoride-induced damage to the rat brain. As a result, the Bcl-2, NF-kappa B, and COX-2 protein expression levels were increased in the fluoride-treated (50 and 100 mg/kg) groups but they were decreased significantly by RJ treatment in the brain tissue. Additionally, the protein expression of caspase-3, caspase-6, Bax, and Erk were decreased in fluoride-treated groups and they were significantly increased by RJ treatment compared to the un-treated rats. Our results suggested that RJ prevented fluoride-induced brain tissue damage through anti-antioxidant activities.Öğe Royal jelly regulates the caspase, Bax and COX-2, TNF-? protein pathways in the fluoride exposed lung damage in rats(Churchill Livingstone, 2022) Aslan, Abdullah; Gok, Ozlem; Beyaz, Seda; Can, Muhammed Ismail; Parlak, Gozde; Gundogdu, Ramazan; Ozercan, Ibrahim HanifiThe study was carried out on 42 male rats divided into six groups with 7 rats in each group: two control groups, two injury groups and two treatment groups. One of the control groups received a basal diet while the other one was fed a basal diet supplemented with royal jelly (RJ) (100 mg/kg). The two injury groups were given 50 mg/kg and 100 mg/kg fluoride, respectively. The two treatment groups exposed to 50 mg/kg and 100 mg/kg fluoride were both fed basal diets with RJ (100 mg/kg). Lungs were taken for histopathological examination. Spectrophotometric analysis was utilized to determine Malondialdehyde (MDA), catalase (CAT) and glutathione (GSH) activities, and Western blotting technique was used to evaluate the levels of specific proteins. On one hand, our experiments revealed that RJ caused decreased MDA levels, and downregulation of COX-2, Bcl-2, GSK3 and TNF?? protein expressions. On the other hand, rolay jelly caused augmented GSH and CAT activities, as well as upregulated Bax, BDNF, caspase-3, caspase-6, caspase-9 protein expressions in rats injuried by the fluoride exposure. The results suggest that the application of RJ was very likely to have a healing effect on the degenerative changes seen in the examined tissue.Öğe TRPM2 mediates distruption of autophagy machinery and correlates with the grade level in prostate cancer(Springer, 2019) Tektemur, Ahmet; Ozaydin, Seda; Onalan, Ebru Etem; Kaya, Nalan; Kuloglu, Tuncay; Ozercan, Ibrahim Hanifi; Tekin, SuatPurposeTransient receptor potential melastatin 2 (TRPM2), a calcium-permeable ion channel, is shown as a prognostic marker candidate in prostate cancer (PCa) and an important regulator of autophagy. We aimed to determine the changes in TRPM2 and autophagic-apoptotic gene expression levels in human prostate adenocarcinomas, and to investigate the affect of TRPM2 on autophagic pathways in PC-3 cell line.MethodsHuman prostate tissues were classified considering the grade levels and were divided into the control, BPH, and grade 1-5 groups. mRNA expression levels of genes were determined by qPCR. In addition, TRPM2 was evaluated immunohistochemically for each group. In PC-3 cell line, TRPM2 was silenced through siRNA transfection, and autophagy induction was analyzed by acridine orange (AO) staining.ResultsThe qPCR and immunoreactivity results showed that the increased TRPM2 expression levels in human PCa samples were paralleled with higher grade levels. The autophagic-apoptotic gene expressions showed high variability in different grade levels. Also, silencing TRPM2 in PC-3 cells altered autophagic gene expressions and caused autophagy induction according to the AO staining results.ConclusionWe showed that the autophagy-TRPM2 association may take place in the molecular basis of PCa and accordingly this connection may be targeted as a new therapeutic approach in PCa.
