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Öğe Ameliorative effects of crocin on tartrazine dye-induced pancreatic adverse effects: a biochemical and histological study(Springer Heidelberg, 2021) Erdemli, Zeynep; Altinoz, Eyup; Erdemli, Mehmet Erman; Gul, Mehmet; Gozukara, Harika; Gul, SemirThe present study aimed to analyze the impact of tartrazine (T) and crocin (Cr) applications on the pancreas tissues of the Wistar rats. A total of 40 Wistar rats were randomly divided into 4 groups with 10 rats in each group, including the Control, T, Cr, and T + Cr groups. After 3 weeks of application, the pancreatic tissues of the rats were removed under anesthesia and rat blood samples were obtained. Tissues were analyzed with biochemical and histopathological methods. It was determined that T administration increased malondialdehyde (MDA), total oxidant status (TOS), oxidative stress index (OSI), glucose, triglyceride, LDL, VLDL, and total cholesterol levels. However, it decreased reduced glutathione (GSH), total antioxidant status (TAS), superoxide dismutase (SOD), catalase (CAT), and HDL levels when compared with the other groups. It was observed that Cr administration significantly increased GSH, SOD, CAT, TAS, and HDL levels when compared with the control group. In the T group, histopathological changes were observed in pancreatic tissue, leading to damages in exocrine pancreas and islets of Langerhans and increased caspase-3 immunoreactivity (p <= 0.001). Co-administration of Cr and T brought the biochemical and histopathological findings closer to the control group levels. The administration of T induced damage in the pancreas with the administered dose and frequency. Cr can increase the antioxidant capacity in pancreas tissue. Co-administration of T and Cr contributed to the reduction of the toxic effects induced by T. It could be suggested that Cr administration ameliorated T toxicity.Öğe Ameliorative effects of crocin on the inflammation and oxidative stress-induced kidney damages by experimental periodontitis in rat(Mashhad Univ Med Sciences, 2021) Erdemli, Zeynep; Erdemli, Mehmet Erman; Gul, Mehmet; Altinoz, Eyup; Gul, Semir; Kocaman, Gulhan; Kustepe, Elif KayhanObjective(s): The present study aimed to investigate the effects of periodontitis on kidneys and the protective role of crocin in periodontitis-induced kidney damage. Materials and Methods: Ethics committee approval was obtained and 30 Wistar rats were randomly divided into 3 groups of 10 rats: Control (C), Periodontitis (P), and Periodontitis + Crocin (P + Cr). After the treatments, rat kidney tissues were incised under anesthesia and blood samples were collected. Biochemical and histopathological analyses were conducted on the samples. Results: Malondialdehyde (MDA), total oxidant status (TOS), and oxidative stress index (OSI) increased in P group rat kidney tissues; urea, creatinine, Tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6), and interleukin 1 beta (IL-1 beta) levels increased in the serum; glutathione (GSH), superoxide dismutase (SOD), catalase (CAT) and total antioxidant status (TAS) levels were reduced in rat kidney tissues, and renal histopathology deteriorated. In the P + Cr group, we observed improvements in biochemical and histopathological parameters when compared with the P group. Conclusion: Periodontitis (P) led to deterioration in oxidative stress parameters and histopathology by increasing the oxidants in kidney tissue. P also led to inflammation in the blood of the rats. Periodontitis + Crocin (P + Cr) administration alleviated the effects of P due to powerful antioxidant anti-inflammatory properties. Cr could be employed as a protective agent in P-induced inflammation and oxidative damage.Öğe Can crocin play a preventive role in Wistar rats with carbon tetrachloride-induced nephrotoxicity?(Mashhad Univ Med Sciences, 2018) Erdemli, Mehmet Erman; Gul, Mehmet; Altinoz, Eyup; Aksungur, Zeynep; Gul, Semir; Bag, Harika GozukaraObjective(s): To investigate protective role of crocin by attempting to create nephrotoxicity with carbon tetrachloride. Materials and Methods: Ethics committee approval was obtained and 50 male Wistar rats were randomly divided into 5 groups that included 10 rats each: Control, Corn oil, Crocin, Carbon tetrachloride (CCl4), and Crocin + Carbon tetrachloride. Following the experiments, the rats were decapitated under anesthesia and incised kidney tissues were subjected to biochemical and histological examinations. Results: In the CCl4 administered group, MDA, TOS, Bun, and creatinine levels increased, GSH, SOD, CAT, and TAS levels decreased (P <= 0.05), glomerular collapse in kidney sections, narrowing and local occlusion in Bowman's space in certain glomeruli, inflammatory cell infiltration and congestion were observed when compared to all other groups. There was a significant decrease in increased MDA, TOS, Bun, and creatinine levels, and a significant increase in decreased GSH, SOD, CAT, and TAS levels in CCl4 + crocin administered group compared to the CCl4 group (P <= 0.05), local minimal glomerular damage, tubular damage, inflammatory infiltration, and vascular collagen symptoms were observed in kidney sections, however significant improvement was observed in damage findings when compared to the CCl4 group. Conclusion: At this dose and time interval, against a highly toxic chemical such as CCl4, crocin was able to suppress oxidative stress by playing a protective role in the kidney tissue.Öğe Crocin (active constituent of saffron) improves CCl4-induced liver damage by modulating oxidative stress in rats(Walter De Gruyter Gmbh, 2019) Cosgun, Binnaz Elif; Erdemli, Mehmet Erman; Gul, Mehmet; Gul, Semir; Bag, Harika Gozukara; Erdemli, Zeynep; Altinoz, EyupBackground: CCl4 is a widely used xenobiotic for the purpose of causing liver damage in experimental studies. In this study, we aimed to reveal the effects of crocin on liver injury caused by CCl4 via free radical scavenging properties. Materials and methods: Animals were divided into five groups of 10: control; corn oil; crocin; CCl4 ; CCl4 + crocin. Tissue samples were carefully removed and separated for biochemical and histological investigations. Results: CCl4 administration led to significant increases in MDA, SOD, CAT and TOS in liver tissue, and AST, ALT and ALP levels in plasma (p <0.05). In addition, CCl4 caused significant decreases in GSH and TAS (p < 0.05). When animals were treated with crocin, high MDA, SOD, CAT, TOS levels, and AST and ALP activities decreased and GSH and TAS levels increased. Control group exhibited normal histological appearance; however extensive necrosis areas were detected in the CCl4 group. In the CCl4 +crocin group, pathological changes were markedly decreased and the appearance of liver tissue was almost similar to the control groups. Conclusion: Our results showed that crocin suppresses oxidative stress with antioxidant properties and has a protective effect on tissue damage caused by CCl4.Öğe Crocin protects intestine tissue against carbon tetrachloride-mediated oxidative stress in rats(Aepress Sro, 2018) Cosgun, Binnaz E.; Erdemli, Mehmet E.; Gul, Mehmet; Gul, Semir; Bag, Harika G.; Aksungur, Zeynep; Altinoz, EyupSaffron is used in traditional medicine for its hypolipidemic, anti-inflammatory and anti carcinogenic properties as a natural remedy in treatment of diseases. The objective of the present study was to demonstrate the protective effect of crocin (one of the main ingredients of saffron) on carbon tetrachloride (CCl4) damage in intestinal mucosa. MDA, GSH, SOD, CAT, TAS and TOS levels were measured in experimental animal tissue samples and these were compared with histologic lesions induced by CCl4.CCl4 caused an increase in MDA, SOD, CAT and TOS levels and a significant decrease in GSH and TAS levels in rat intestinal tracts. After crocin treatment, serious improvements were observed in histological lesions and biochemical results in the intestinal tract. In conclusion, crocin inhibited the toxic effects induced by CCl4 in the intestine by its strong antioxidant properties.Öğe Intracerebroventricular BDNF infusion may reduce cerebral ischemia/reperfusion injury by promoting autophagy and suppressing apoptosis(Wiley, 2024) Yilmaz, Umit; Tanbek, Kevser; Gul, Semir; Koc, Ahmet; Gul, Mehmet; Sandal, SuleymanHere, it was aimed to investigate the effects of intracerebroventricular (ICV) Brain Derived Neurotrophic Factor (BDNF) infusion for 7 days following cerebral ischemia (CI) on autophagy in neurons in the penumbra. Focal CI was created by the occlusion of the right middle cerebral artery. A total of 60 rats were used and divided into 4 groups as Control, Sham CI, CI and CI + BDNF. During the 7-day reperfusion period, aCSF (vehicle) was infused to Sham CI and CI groups, and BDNF infusion was administered to the CI + BDNF group via an osmotic minipump. By the end of the 7th day of reperfusion, Beclin-1, LC3, p62 and cleaved caspase-3 protein levels in the penumbra area were evaluated using Western blot and immunofluorescence. BDNF treatment for 7 days reduced the infarct area after CI, induced the autophagic proteins Beclin-1, LC3 and p62 and suppressed the apoptotic protein cleaved caspase-3. Furthermore, rotarod and adhesive removal test times of BDNF treatment started to improve from the 4th day, and the neurological deficit score from the 5th day. ICV BDNF treatment following CI reduced the infarct area by inducing autophagic proteins Beclin-1, LC3 and p62 and inhibiting the apoptotic caspase-3 protein while its beneficial effects were apparent in neurological tests from the 4th day.Öğe Phoenixin-14 may ameliorate testicular damage caused by torsion-detorsion by reducing oxidative stress and inflammation in prepubertal rats(Churchill Livingstone, 2024) Yilmaz, Nesibe; Hudaykuliyeva, Jemal; Gul, SemirThe present study aimed to investigate the effects of Phoenixin-14 (PNX-14) on oxidative damage, inflammatory response, histopathological variations, and serum testosterone levels in testicular tissues. Forty-eight Wistar albino prepubertal male rats were divided into 4 groups (Sham, TTD, TT +PNX +TD, TTD +PNX) (n =12). The torsion period was 2 hours and the detorsion period was 24 hours in the testicular torsion/detorsion (TD) groups. A single PNX-14 (50 mu g/kg) dose was injected into the rats in the TT +PNX TD group on the 90th minute of torsion, and it was injected into the rats in the TTD +PNX group at the beginning of detorsion. Oxidative damage in testicular tissues was determined based on superoxide dismutase (SOD), malondialdehyde (MDA), total antioxidant status (TAS) and total oxidant status (TOS), and inflammatory damage was determined based on TNF- alpha and IL -6 levels. Histopathological variations were investigated with the Periodic Acid Schiff (PAS) staining method in testicular tissues and analyzed based on Johnsen scores. Spermatogonia cells were examined immunohistochemically. Serum testosterone levels were determined with the enzyme -linked immunosorbent assay (ELISA). A significant increase in oxidative stress and inflammation parameters was determined in the TTD group when compared to the other groups (p <0.05). PNX-14 treatment led to a statistically significant decrease in these parameters and significantly repaired the TD damage in testicular tissue (p <0.05). Johnsen scoring revealed significant improvement in PNX-14 groups and an increase in spermatogonia count, supporting the biochemical findings (p <0.05). PNX-14 could be a potential therapeutic agent in testicular TD damage and further studies should be conducted to elucidate the present study findings.Öğe Prevention of toxic effects of orally administered tartrazine by crocin in Wistar rats(Taylor & Francis Ltd, 2021) Altinoz, Eyup; Erdemli, Mehmet Erman; Gul, Mehmet; Erdemli, Zeynep; Gul, Semir; Turkoz, YusufTartrazine is used in the pharmaceutical, cosmetic, and food industries worldwide, despite its many toxic effects. The therapeutic effects of crocin (50mg/kg/day) against tartrazine-induced (500mg/kg/day) oxidative damage in ileum and colon tissues in rats have been investigated. Malondialdehyde and total oxidant status levels elevated by tartrazine within the ileum and colon tissues were reduced with crocin treatment, while tartrazine decreased antioxidative parameters (glutathione, total antioxidant status, superoxide dismutase, and catalase) were reverted. Tartrazine-induced histopathological changes of ileum and colon tissues were ameliorated following crocin treatment. In conclusion, Tartrazine consumption elicited tissue injury via lipid peroxidation, and crocin ameliorated oxidative injury by its antioxidant and free radical scavenger properties.Öğe Protective effects of crocin on acrylamide-induced testis damage(Wiley, 2021) Gul, Mehmet; Kayhan Kustepe, Elif; Erdemli, Mehmet Erman; Altinoz, Eyup; Gozukara Bag, Harika Gozde; Gul, Semir; Gokturk, NurcanExposure to acrylamide (Ac) through food is almost inevitable and this kind of toxicity may cause lifelong harm. In present study, we researched effects of Crocin (Cr) on testis histopathology in Ac-induced testis of rats. Adult male rats were grouped as: group 1, 1 ml saline only; group 2, 50 mg/kg Cr only; group 3, 25 mg/kg Ac only and group 4, 25 mg/kg Ac + 50 mg/kg Cr. All administrations were given as 1 ml/day by gavage for 21 days. It was found that Ac adversely influenced the levels of FSH, testosterone and LH in the blood serum; malondialdehyde (MDA), total antioxidant status (TOS), oxidative stress index (OSI)/ glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), total antioxidant status (TAS) oxidant/antioxidant parameters in testis tissue (p < .01) and the histopathological parameters like Johnson's score, seminiferous tubule diameter, seminiferous epithelial height and H-score for caspase-3 immunoreactivity. In contrary, Cr treatment resulted in increase in testosterone, follicle stimulating hormone (FSH), luteinizan hormone (LH) levels and SOD, CAT, GSH, TAS levels (p < .01) and improved all the histopathological changes. In conclusion, Cr has a promising protective potential against Ac-caused toxic damages in testicular tissue.
