Person: ÖZBEYLİ, DİLEK
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ÖZBEYLİ
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DİLEK
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Publication Open Access The protective effects of momordica charantia fruit extract in methotrexate induced liver damage in rats(2022-12-01) ÖZBEYLİ, DİLEK; ŞEN, ALİ; ÖZBEYLİ D., ŞEN A., ÇEVİK Ö., Erdoğan Ö., Çilingir Kaya Ö. T., EDE PAZARBAŞI S., ŞENER G.BACKGROUND/AIMS: Methotrexate (MTX), a cytotoxic therapeutic agent, is used for the cure of malignancies and rheumatologic disorders. However, the significant side effects of MTX limits its use. In this study, we aim to assess the hepatoprotective properties of Momordica charantia (MC) against MTX-induced liver damaged in rats. MATERIALS AND METHODS: Following one dose of MTX (20 mg/kg), the rats were given either distilled water or MC extract (300 mg/kg, po) for 5 days. After the dissection of the rats, the liver was removed to analyse tumour necrosis factor-α (TNF-α), interleukin-1β (IL-1β), transforming growth factor β (TGF-β) and 8-hydroxy-2’-deoxy-guanosine (8-OhdG) levels and superoxide dismutase (SOD), catalase (CAT), and caspase-3 activities. The tissues were also examined histopathologically. RESULTS: The hepatic TNF-α, IL-1β, TGF-β, 8-OhdG levels, and Caspase-3 activity in the MTX group were found to be significantly increased compared to the control group. However, MC extract was able to significantly decrease TNF-α, TGF-β, 8-OhdG levels, and Caspase-3 activity. Also, both the SOD and CAT activity of the MTX group decreased compared to the control group. Although only the SOD levels elevated significantly with MC treatment, the SOD and CAT activities of the MC treated group were similar to the control group. Supporting these biochemical parameters, MTX-induced histologic alterations in the liver were also ameliorated via MC treatment. CONCLUSION: Our results demonstrated that MC has a protective role against MTX-induced hepatic tissue injury by reducing apoptosis, oxidative damage, and the expression of pro-inflammatory cytokines.Publication Metadata only Myrtus communis leaf extract protects against cerulein-induced acute pancreatitis in rats(WILEY, 2020) ŞEN, ALİ; Ozbeyli, Dilek; Sen, Ali; Kaya, Ozlem Tugce Cilingir; Ertas, Busra; Aydemir, Sezgin; Ozkan, Naziye; Yuksel, Meral; Sener, GokselIn this study, the aim was to examine the potential protective effects of Myrtus communis subsp. communis leaf ethanol extract (MC) treatment against acute pancreatitis (AP) in rats. Thirty-two rats were grouped as the saline-pretreated control (C), MC-pretreated control (MC), saline-pretreated AP (AP), and MC-pretreated AP (MC + AP) groups. To induce AP, cerulein was administered (50 mu g/kg) two times. The rats were given MC for 14 days before cerulein injection. Six hours after the final cerulein injection, the rats were sacrificed. Pancreatic damage was associated with an increase in the serum activity of lipase and amylase, the pancreatic activity of myeloperoxidase, and the pancreatic level of malondialdehyde, interleukin-1 beta, and interleukin-6. AP also led to a decrease in the pancreatic level of anti-inflammatory interleukin-10 and glutathione. Pretreatment with MC before the induction of AP significantly reduced the pancreatic damage observed during the histological examination as well as reversed the biochemical changes evoked by AP. Practical applications Acute pancreatitis is characterized by high mortality (average about 5%; severe cases may reach about 30%). The current treatment for acute pancreatitis is mainly symptomatic. The introduction of herbal drugs may lead to the development of a new strategy in the treatment of this disease. This study revealed that MC reduced pancreatic injury by decreasing pro-inflammatory cytokines, increasing antioxidant capacity and anti-inflammatory cytokine, IL-10. To the authors' knowledge, this research is the first report showing that MC inhibits the development of AP. This observation suggests that MC may be useful in the prevention and the treatment of AP in clinical settings.Publication Metadata only Evaluation of the protective effect of Myrtus communis in scopolamine induced Alzheimer model through cholinergic receptors(ELSEVIER, 2019) ŞEN, ALİ; Aykac, Asli; Ozbeyli, Dilek; Uncu, Murat; Ertas, Busra; Kilinc, Olca; Sen, Ali; Orun, Oya; Sener, GokselAlzheimer's disease is a progressive neurodegenerative disorder causing common health problem with increasing age. Evidences show that the key symptoms of AD are mainly caused by cholinergic system dysfunction which has a role in cognitive disorders. Cholinergic pathways especially muscarinic receptors like M-1 subtype also have a major role in learning, memory, cognitive functions and emotional state. There is no available permanent treatment currently to cure AD or to change its progression. This study was designed to investigate the factors that play important role in pathogenesis of AD and to compare the effects of Galantamine treatment with effects of Myrtus communis treatment. The expression level of M-1, ACh, BDNF; AChE activity, GSH level, MDA and MPO activity and AChE gene expression were investigated in scopolamine-induced rat model. Results showed that, administration of MC significantly improves the SCOP-induced reduction of latency and object recognition time; increasing BDNF, M-1 and ACh receptor expression levels in the different brain regions. Additionally, MC showed an increased in AChE by enhancing GSH activity and reducing MDA level and MPO activity. In conclusion MC considered as a possible novel therapeutic approach that can be a valuable alternative way in the prevention and treatment of AD.Publication Open Access Protective effects of Rubus tereticaulis leaves ethanol extract on rats with ulcerative colitis and bio-guided isolation of its active compounds: A combined in silico, in vitro and in vivo study(2022-11-01) ŞEN, ALİ; ÖZBEYLİ, DİLEK; ERTAŞ, BÜŞRA; DOĞAN, AHMET; BİTİŞ, LEYLA; Şen A., Özbeyli D., Teralı K., Göger F., Yıldırım A., Ertaş B., Doğan A., Bitiş L., Şener G.The aim of this study was to evaluate the therapeutic effect of active ethanol extract obtained from the leaves of Rubus tereticaulis (RTME) against colitis, and to purify major compounds from this extract by bioassay-directed isolation. Rats with colitis induced via intra-rectal acetic acid administration (5%, v/v) received RTME or sulfasalazine for three consecutive days. On day four, all rats were decapitated, and the colonic tissue samples were collected for macroscopic score, colon weight, reduced glutathione (GSH), myeloperoxidase (MPO), and malondialdehyde (MDA) analyses. The active compounds and chemical composition of RTME were determined by bio-guided isolation and LC-MS/MS, respectively. Compared to the colitis group, the rats treated with RTME displayed significantly lowered macroscopic scores and colon wet weights (p < 0.001). These effects were confirmed biochemically by a decrease in colonic MPO activity (p < 0.001), MDA levels (p < 0.001), and an increase in GSH levels (p < 0.001). Kaempferol-3-O-β-d-glucuronide (RT1) and quercetin-3-O-β-d-glucuronide (RT2) were found to be the major compounds of RTME, as evidenced by in vitro anti-inflammatory and antioxidant activity-guided isolation. Their anti-inflammatory/antioxidant activities were also predicted by docking simulations. Additionally, quinic acid, 5-caffeoylquinic acid, quercetin pentoside, quercetin glucoside, quercetin-3-O-β-d-glucuronide, kaempferol-3-O-β-d-glucuronide, and kaempferol rutinoside were identified in RTME via using LC-MS/MS. RT2, along with other compounds, may be responsible for the observed protective action of RTME against colitis. This study represents the first report on the beneficial effects of RTME in an experimental model of colitis and highlights the potential future use of RTME as a natural alternative to alleviate colitis.Publication Metadata only Investigation of possible neuroprotective effects of some plant extracts on brain in bile duct ligated rats(WILEY, 2021) ŞEN, ALİ; Ozel, Armagan Begum; Cilingir-Kaya, Ozlem Tugce; Sener, Goksel; Ozbeyli, Dilek; Sen, Ali; Sacan, Ozlem; Yanardag, Refiye; Yarat, AysenThis study aimed to investigate the possible neuroprotective effects of bitter melon (BM), chard, and parsley extracts on oxidative damage that may occur in the brain of rats with bile duct ligation (BDL)-induced biliary cirrhosis. It was observed that lipid peroxidation (LPO), sialic acid (SA), and nitric oxide (NO) levels increased; glutathione (GSH) levels, catalase (CAT) activity, and tissue factor (TF) activity decreased significantly in the BDL group. However, in groups with BDL given BM, chard, and parsley extracts LPO, SA, NO levels decreased; GSH levels and CAT activities increased significantly. No significant differences were observed between groups in total protein, glutathione-S-transferase, superoxide dismutase, and boron. Histological findings were supported by the biochemical results. BM, chard, and parsley extracts were effective in the regression of oxidant damage caused by cirrhosis in the brain tissues. Practical applications Bitter melon (BM), chard, and parsley have antioxidant properties due to their bioactive compounds which are involved in scavenging free radicals, suppressing their production, and stimulating the production of endogenous antioxidant compounds. Since BM, chard, and parsley extracts were found to be effective in the regression of oxidant damage caused by cirrhosis in the brain tissues, these plant extracts may be an alternative in the development of different treatment approaches against brain damage in cirrhosis. At the same time, these species have been used as food by the people for many years. Therefore, they can be used safely as neuroprotective agents in treatment.Publication Metadata only Myrtus communis extract ameliorates high-fat diet induced brain damage and cognitive function(MARMARA UNIV, 2020) ŞEN, ALİ; Ozbeyli, Dilek; Yarimbas, Gizem; Ertas, Busra; Sen, Ali; Sakarcan, Selin; Sener, GokselObesity causes cognitive weakening and increases the risk of neurodegenerative diseases. Myrtus connnunis extract (MC) has anti-inflammatory and antioxidant properties. In this study, it is aimed to investigate the effects of Myrtus comniunis on oxidative brain damage caused by a high-fat diet (HFD), using behavioral and biochemical parameters. Twenty- four Wistar albino rats (200-250 g) were divided into three groups. The control group (C) received a standard diet, while HFD groups were received HFD for 16 weeks. MC (100 mg/kg, oral) was given to the HFD + MC group for the last 4 weeks. At the end of the study, the novel object recognition test (NORT) was performed and the hippocampus and blood samples were collected. Acetylcholinesterase (AChE) and Na+/K+- ATPase activities, malondialdehyde (MDA), 8-hydroxy-2'-deoxyguanosine (8-0HdG) and reduced glutathione (GSH) levels were measured in the hippocampal samples and cholesterol levels were analyzed in sera. Findings have shown that NORT performance of the HFD group was reduced, while administration of MC prevents this reduction and in parallel, increased AChE and decreased Na+/K+-ATPase activities were ameliorated by administration of MC. Increased MDA and 8-OHdG levels observed in the HFD group, were decreased in the MC treated HFD group. Our results point out that MC has ameliorative effects on hippocampal oxidative stress and cognitive impairment in high fat nutrition-induced obesity.Publication Open Access Therapeutic effects of momordica charantia L. Ethanolic extract on acetic acid-induced ulcerative colitis in rats(2021-01-01) ŞEN, ALİ; KAYA, ÖZLEM TUĞÇE; ŞENKARDEŞ, İSMAİL; ÖZBEYLİ, DİLEK; ÖZBEYLİ D., ŞEN A., Aykac A., Terali K., Cilingir-Kaya Ö. T., ŞENKARDEŞ İ., Sener G.© 2021 European Journal of Biology. All rights reserved.Objective: This study aims to investigate the effect of Momordica charantia L. (MoC) ethanolic extract on ulcerative colitis (UC) and was explored in vitro and in vivo. Materials and Methods: The rats were divided into control (C), saline-treated colitis (AA), MoC extract-treated colitis (AA+MoC), and sulfasalazine (SS)-treated colitis (AA+SS) groups. Colitis was induced by acetic acid. MoC extract, SS or saline were given to the related groups for 3 days. Interleukine-1β, malondialdehyde, glutathione levels, myeloperoxidase activity, bax/bcl-2 ratio, caspase-9 and caspase-3 levels were measured in colon and macroscopic and histopathologic examinations were done. Total phenolic/flavonoid content and biological activity of MoC were evaluated by in vitro analysis. Results: Compared to the control group, with acetic acid application interleukin-1β levels, myeloperoxidase activity, malondialdehyde levels, bax/bcl-2 ratio, caspase-9 and caspase-3 levels were significantly upregulated, while glutathione levels were significantly decreased in the AA group. In contrast, MoC and SS treatments reduced interleukin-1β, malondialdehyde levels, myeloperoxidase activity, bax/bcl-2 ratio, and caspase-9 and caspase-3 levels. Glutathione levels increased upon MoC or SS treatment. Increased macroscopic and microscopic scoring with AA improved with MoC or SS treatment, but the MoC or SS treated groups had higher score values than the control. Also, in vitro results showed that MoC exhibited 2,2-diphenyl-1- picrylhydrazyl and 2,2\"-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid radical scavenging activity as well as significant antilipoxygenase activity. In addition, MoC extract showed a potent anti-inflammatory activity compared to standard indomethacin. Conclusion: Our biochemical, in vitro and histopathologic analysis indicate that MoC is likely to prove beneficial in UC therapy.Publication Open Access Bitter melon (Momordica charantia) fruit extract ameliorates methotrexate-induced reproductive toxicity in male rats(MARMARA UNIV, FAC MEDICINE, 2021-10-29) ŞEN, ALİ; Kanpalta, Fatma; Ozbeyli, Dilek; Sen, Ali; Cevik, Ozge; Sener, Goksel; Ercan, FerihaObjective: Methotrexate (MTX) is a drug commonly used for the treatment of malign neoplastic and inflammatory diseases. Anti-oxidant and anti-inflammatory effects of bitter melon (BM) were reported. The aim of this study was to examine the effects of BM fruit extract on MTX-induced testicular and epididymal damage. Materials and Methods: Sprague Dawley male rats were divided into three groups (n=8) as control, MTX and MTX+BM. A single dose of MTX (20 mg/kg) was injected intraperitoneally to the MTX and MTX+BM groups. BM fruit extract (600 mg/kg) was applied to the MTX+BM group orally for 5 days. Testes were examined for general histopathology, proliferating and apoptotic cells. The epididymis samples were used for the evaluation of sperm morphology. Oxidative and inflammatory markers were analysed biochemically. Results: Increased abnormal spermatozoa, degenerated seminiferous tubules with increased apoptotic cells and decreased proliferative cells were observed in the MTX group. TNF-alpha, IL-1 beta, 8-hydroxy-2-deoxyguanosine and caspase-3 levels increased, superoxide dismutase and catalase levels decreased in both testis and epididymis samples. All these histological and biochemical parameters were ameliorated in the MTX+BM group. Conclusion: Methotrexate causes testis damage by decreasing spermatogenic cells and increasing apoptosis through oxidative stress and inflammation. BM extract improves testis and epididymis damage with its possible anti-oxidant and anti-inflammatory effects.