TR-Dizin İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.14627/9
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Article Citation - WoS: 5Apocynin Ameliorates Testicular Toxicity in High-Fat Diet-Fed Rats by Regulating Oxidative Stress(Marmara Univ, inst Health Sciences, 2023) Hersek, Irem; Koroglu, M. Kutay; Coskunlu, Busra; Ertas, Busra; Sener, Goksel; Ercan, Feriha; Köroğlu, KutayObjective: The purpose of this study was to examine the effects of apocynin (APC), an inhibitor of NADPH oxidase (NOX), on high-fat diet (HF)induced testis cytotoxicity.Methods: Wistar albino rats were divided into three groups as control, HF and HF+APC groups. Rats in HF and HF+APC groups were fed using HF for 16 weeks and in the last four weeks of this period vehicle solution or APC (25 mg/kg) was administered orally five days a week, respectively. Control group was fed with standart lab chow for 16 weeks. Cholesterol, triglyceride, high-density lipoproteins, leptin, estrogen, testosterone, LH and FSH were estimated in blood serum. Sperm parameters were analysed from the epididymis. Testicular malondialdehyde, 8-hydroxy-2deoxyguanosine, glutathione, superoxide dismutase and myeloperoxidase levels were estimated biochemically. Testicular morphology, proliferative, apoptotic and NOX2-positive cells were analysed histologically.Results: HF-induced obesity caused significant alterations in serum lipid and hormone profiles. Testicular malondialdehyde, 8-hydroxy-2deoxyguanosine, and myeloperoxidase levels increased, glutathione and superoxide dismutase levels decreased in this group. Moreover, altered sperm parameters, increased degenerated seminiferous tubules, apoptotic and NOX2 - positive cells and decreased proliferative cells were observed in the HF group. All these biochemical and histological alterations improved in the HF+APC group.Conclusion: HF-induced obesity causes altreations in lipid values, sperm parameters and testicular morphology by increasing oxidative stress through NOX2 activity. Apocynin might prevent testis damage via regulating oxidant/antioxidant balance.Article Panax Ginseng Extract Ameliorates Methotrexate-Induced Multi-Organ Damage Via the Regulation of Oxidative Stress(Marmara Univ, 2023) Macit, Caglar; Ede-Pazarbasi, Seren; Yilmaz-karaoglu, Suemeyye; Tunali-Akbay, Tugba; Karakaya-Cimen, Fatma Bedia; Ercan, Feriha; Sener, Goksel; Akbay, Tugba Tunalı-Oxidative damage plays an important role in organ toxicities caused by methotrexate (MTX). This study aimed to determine the antioxidant effects of Panax ginseng (PxG) extract against MTX-induced liver, lung, ileum and kidney damage. Twenty-four Sprague Dawley male rats (weight 250-300 g) were used in the study. The animals were randomly separated into three groups: a) Control, b) MTX-treated (MTX) and c) MTX+PxG-treated (MTX+PxG) groups. MTX was administered intraperitoneally at 20 mg/kg, as a single dose to MTX and MTX+PxG groups. PxG was administered orally at 100 mg/kg to the MTX+PxG group for five days. Saline was given to the control and MTX groups for 5 days. At the end of the experiment, liver, lung, ileum, and kidney samples were obtained. Malondialdehyde (MDA) and glutathione (GSH) levels, superoxide dismutase (SOD), glutathione-S-transferase (GST) and tissue factor (TF) activities were determined in all tissues. In addition, histological examinations were done through light microscopy. GraphPad Prism 5v. was used for statistics, and p<0.05 were considered significant. Administration of MTX caused severe injury in tissues. Findings showed that MDA level, SOD, and GST activities were significantly normalized in the MTX+PxG group compared to the control group. A significant reduction in GSH level observed in the MTX group was reversed with PxG administration In addition, TF activity and total protein levels were found to be impaired in the MTX group, but TF activity was significantly improved in liver and lung tissues and total protein level was significantly reversed in lung and ileum in MTX+PxG group. The results of histological examinations showed that MTX-induced damage was ameliorated with the PxG administration. In conclusion, this study shows that Panax ginseng, thanks to its antioxidant properties, reversed MTX-induced tissue damage and therefore may be beneficial against side effects in patients undergoing chemotherapy.Article Citation - WoS: 1Citation - Scopus: 1Radioprotective Effect of Resveratrol for Early and Late Ionizing Radiation-Induced Damages on Colon and Rectum in Rats(Marmara Univ, 2023) Beceren, Ayfer; Aydemir, Sezgin; Atasoy, Beste Melek; Esin, A. K.; Ercan, Feriha; Sener, T. Emre; Sener, Goksel; Ak, Esin; Emre Şener, T.Radiotherapy, which is routinely used to treat a wide range of oncological disorders, primarily affects the malignant tissue in the targeted area, but also have negative effects in the surrounding tissues. Pelvic radiotherapy causes early and late effects on the colon and rectum. Resveratrol (RVT) has been revealed to have a number of pharmacological effects in a variety of experimental models and clinical circumstances, therefore it has piqued the interest of scientists in recent years. In this study, we aimed to investigate the potential protective effects of resveratrol (RVT), a strong antioxidant, anti-inflammatory and anti-mutagenic agent, against toxicity of colonic and rectal tissues seen in the early and late stages after pelvic radiation. The treatment durations of the current study were designed as one week and ten weeks interval by following radiation exposure. Sprague Dawley rats were divided into 5 groups (8 animals/group) as the control, radiation-early effects (Rd-E), radiation-late effects (Rd-L), and RVT-treated Rd-E (Rd-E+RVT) and RVT-treated Rd-L (Rd-L+RVT) groups. Ionizing radiation was performed to the pelvic area that covers colon and rectum in single fraction of 20 Gy in a linear accelerator using with 6 MV photon energy. RVT was orally administered (10 mg/kg/day) immediately following the radiation exposure and continued daily for 1 and 10 weeks for early and late groups, respectively. Pelvic radiation caused a significant decrease in glutathione level, while malondialdehyde levels, myeloperoxidase activity and 8-hydroxydeoxyguanosine were increased in both Rd-E and Rd -L groups in the colon and rectum tissues. Additionally, light microscopic evaluations (H & E staining) revealed degeneration of epithelium and inflammatory cell infiltration in the colonic and rectal tissues in radiation groups. RVT treatment reversed all conducted biochemical parameters and ameliorated histomorphological changes following early and late effects of pelvic radiation in tissues. In conclusion, resveratrol may be a candidate as a radioprotector for normal tissues during and after radiotherapy.Article Citation - WoS: 5Citation - Scopus: 5Effects of <i>myrtus Communis</I> L. Extract and Apocynin on Lens Oxidative Damage and Boron Levels in Rats With a High Fat-Diet(Galenos Publ House, 2021) Yasar, Ruya Kuru; Kuru, Dilruba; Sen, Ali; Sener, Goksel; Ercan, Feriha; Yarat, Aysen; Kuru, RuyaObjectives: Nutritional obesity causes oxidant damage in the body and cataract formation in the lenses by increasing the formation of free radicals. Myrtus communis leaf extracts (Myr) have antioxidant properties, and apocynin (Apo) is an effective NADPH-oxidase inhibitor. The data on tissue boron levels are quite lacking. The aim of this novel study was to investigate the effects of Myr and Apo treatment on boron levels and oxidative lens damage in rats fed a high-fat diet (HFD). Materials and Methods: Wistar albino male rats were randomly divided into four groups: the control group, HFD group, HFD + Myr group, and HFD + Apo group. Body weight and blood lipids were determined before and after the experiment. After decapitating the rats, the lenses were removed and homogenized. Catalase (CAT) and superoxide dismutase (SOD) activities and boron, malondialdehyde (MDA), and reduced glutathione (GSH) levels in the lens homogenates were determined. Results: The HFD increased serum triglyceride (p<0.05), total cholesterol level (p<0.001), body weight (p<0.001), and lens MDA levels (p<0.01) and decreased lens GSH (p<0.05) and boron level (p<0.01), SOD (p<0.001), and CAT activity (p<0.001). However, Myr and Apo treatment reduced the rats' body weight (p<0.001), serum triglyceride (p<0.05), and total cholesterol level (p<0.001) and increased lens boron (p<0.01; p<0.001), GSH levels (p<0.05; p<0.01), and CAT activity (p<0.001). Conclusion: Both Myr and Apo may be able to reduce oxidative stress in the lenses of obese rats caused by HFD by increasing boron levels.Article Citation - WoS: 10Citation - Scopus: 11The Effect of <i>cotinus Coggygria</I> L. Ethanol Extract in the Treatment of Burn Wounds(Marmara Univ, 2022) Erta, Busra; Okuyan, Betul; Sen, Ali; Ercan, Feriha; Onel, Huseyin; Goger, Fatih; Sener, Goksel; Ertas, BüsraThe overall aim of the present research is to evaluate for the first time the curative effect of Cotinus coggygria leaves on burn injury in an experimental burn model along with its anti-inflammatory and antioxidant activity potential. Also, phenolic compounds of C. coggygria were characterised by LC-MS/MS. Wistar albino rats weighing 200-250 g were exposed to 90 degrees C bath for 10 s to induce burn injury, involving 30% of the total body surface area. In the treatment groups, 5% C. coggygria ethanol extract was applied topically as a cream immediately after the burn. Blood and skin tissue samples were taken after decapitation at the 4th and 48th hours following the burn procedure. Interleukin 1-beta (IL-1 beta) and tumour necrosis factor (TNF-alpha) were determined in serum samples, and hydroxyproline, prostoglandin E2 (PGE2), and myeloperoxidase (MPO) activity and 8-hydroxy-2'-deoxy-guanosine (8-OHdG) levels were determined in skin tissue samples. Increased levels of serum cytokines were decreased with C. coggygria treatment in both periods. MPO activity, prostaglandine (PGE2), and 8-OhdG levels increased, while hydroxyproline levels decreased due to burn damage. On the other hand, these parameters were returned to its normal levels with C. coggygria treatment. In addition, the tissue histology of animals treated with C. coggygria showed a complete epithelialization with increased collagenation. As a result, C. coggygria may be an alternative treatment approach for burns-induced skin damage and wounds.