21 results on '"TÜREDİ, Sibel"'
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2. An Examination of the Effects of Propolis and Quercetin in a Rat Model of Streptozotocin-Induced Diabetic Peripheral Neuropathy
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Türedi, Sibel, primary, Çelik, Hakim, additional, Dağlı, Şeyda Nur, additional, Taşkın, Seyhan, additional, Şeker, Uğur, additional, and Deniz, Mustafa, additional
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- 2024
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3. Effects of resveratrol on doxorubicin induced testicular damage in rats
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Türedi, Sibel, Yuluğ, Esin, Alver, Ahmet, Kutlu, Ömer, and Kahraman, Cemil
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- 2015
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4. Histopathological Evaluation of The Protective Effects of Resveratrol Against Gastrointestinal Tissue Damage Induced by Cisplatin in Rats.
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Hancı, Hatice and Türedi, Sibel
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RESVERATROL , *GASTROINTESTINAL system injuries , *CISPLATIN , *TUMOR necrosis factors , *APOPTOSIS - Abstract
Background: The purpose of this study was to investigate the effects of differing doses of resveratrol (RES) against cisplatin (CP)-induced gastrointestinal injury in small intestinal tissue using histopathological and immunohistochemical methods. Materials and Methods: Forty-eight healthy male Wistar albino rats aged 12-16 weeks were divided into eight groups, control RES-30, RES-60, RES-90, CP, CP+RES30, CP+RES60, and CP+RES90. Small intestine tissues were collected at the end of the experimental period and subjected to routine Hematoxylin & Eosin (H&E) and Periodic Acid Schiff (PAS) staining. Tumor necrosis factor alpha (TNF-α) and interleukin 1 beta (IL-1β) were evaluated from immunohistochemically stained tissues. DNA fragmentation was evaluated using the TUNEL technique. Results: Based on the histopathological findings, vacuolization and shedding were observed in the small intestine surface epithelium with notable fusion and shortening in the villus structure in the CP group. Significant decreases were observed in the CP+RES30, CP+RES60, and particularly CP+RES90 groups compared to the CP group in terms of apical surface epithelial degeneration, villous fusion, and inflammatory cell infiltration. The apoptotic index (AI) and TNF-α immunoreactivities were significantly higher in the CP group (p<0.05). AI and TNF-α immune intensity were significantly lower in the treatment groups (p<0.05). It has been determined that among the treatment groups, particularly the CP+RES30 group showed the lowest damage score values and immunoreactivity of TNF-α with AI.Conclusions: CP caused severe histological tissue injury, intestinal apoptosis, and proinflammatory cytokine release, while RES administered before CP treatment exhibited a dose-dependent protective effect (particularly at RES30 mg/kg) against CP-induced intestinal injury. [ABSTRACT FROM AUTHOR]
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- 2023
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5. Prenatal dönemleri boyunca günde bir saat kesintisiz 900 MHz elektromanyetik alan etkisine maruz kalan 75 günlük Sprague Dawley dişi sıçanların böbrek ve mesane dokularının histopatolojik olarak incelenmesi
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TÜREDİ, Sibel, primary, HANCI, Hatice, additional, ODACİ, Ersan, additional, and ÇELİK, Hakim, additional
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- 2022
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6. Deneysel Diyabette Deri Hasarına Karşı Propolisin İyileştirici Etkilerinin Araştırılması
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TÜREDİ, Sibel
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Medicine ,Deri,Diabetes Mellitus,Propolis,Histopatoloji,Rat ,Skin,Diabetes Mellitus,Propolis,Histopathology,Rat ,Tıp - Abstract
Background: The purpose of this study was to investigate the possible positive effects of propolis against the damage caused by experimental Diabetes Mellitus on the dermal tissue with histopathological parameters. Methods: Twenty-four male Wistar Albino rats aged 10-12 weeks were randomly assigned into four groups as; Control, Propolis 100mg, DM and DM+Propolis (100mg). Experimental diabetes was induced with a single dose of 60 mg/kg streptozotocin (intraperitoneally) dissolved in 0.1 Molar (Ph: 4.5) citrate buffer. At the end of the experiment period (Day 28), all groups were sacrificed and histopathological evaluation was performed on the dermal tissues by Hematoxylin&Eosin and Masson Trichrome staining. Results: In histopathological evaluation; normal morphological structure were observed in the skin samples of the control and Propolis 100mg groups. Thinning of the multilayered epithelium, degeneration, separation and decrease in the connective tissue in the dermis layer was observed in DM group, but these findings were significantly improved in the DM+Propolis 100 mg group.Conclusions: The present study showed that the biological properties of Propolis 100mg dose may prevent skin damage caused by diabetes at the morphological level in dermal tissue.Key words: Skin, Diabetes Mellitus, Propolis, Histopathology, Rat, ÖzetAmaç: Bu çalışmada deneysel Diabetes Mellitus’un dermal doku üzerinde oluşturduğu hasara karşı propolisin muhtemel olumlu etkilerini histopatolojik parametreler ile araştırmaktır. Materyal ve Metod: Çalışmamızda 24 adet 10-12 haftalık Wistar Albino türü erkek sıçanlar Kontrol, Propolis 100mg, DM ve DM+Propolis (100mg) olarak rastgele 4 gruba ayrıldı. 0.1 Molar (Ph: 4,5) sitrat tamponunda çözülen tek doz 60 mg/kg Streptozotosin (inroperitoneal) ile deneysel diyabet oluşturuldu. Deney süresinin bitiminde (28. Gün) tüm gruplar sakrifiye edildi ve elde edilen dermal dokularda Hematoksilen&Eozin ve Masson Trikrom boyamaları ile histopatolojik değerlendirme yapıldı.Bulgular: Yapılan histopatolojik değerlendirmede; kontrol ve Propolis 100mg gruplarına ait deri örneklerinin normal morfolojik yapıda olduğu izlendi. DM grubunda çok tabakalı epitelde incelme, dejenerasyon, dermis tabakasında yer alan bağ dokusunda ayrılma ve azalma gözlenirken DM+Propolis 100 mg grubunda ise bu bulgularda belirgin şekilde bir iyileşme izlendi.Sonuç: Bu çalışma, Propolis 100mg dozunun biyolojik özelliklerin diyabetin dermal dokuda meydana getirdiği cilt hasarını morfolojik düzeyde önleyebileceğini göstermiştir.Anahtar kelimeler: Deri, Diabetes Mellitus, Propolis, Histopatoloji, Rat
- Published
- 2021
7. Sıçanlarda Metotreksat ile İndüklenen Testis Hasarına Karşı E Vitamininin Koruyucu Etkileri: Histopatolojik ve Akım Sitometrik Çalışma
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KURT, Şeyma, ERİŞGİN, Züleyha, TEKELİOĞLU, Yavuz, AKMAN, Ahmet, and TÜREDİ, Sibel
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Metotreksat,E vitamin,Apopitozis,TUNEL,Akım sitometri ,Medicine ,Methotrexate,Vitamin E,Apoptosis,TUNEL,Flow cytometry ,Tıp - Abstract
Background: Methotrexate (MTX) can cause oxidative stress-related tissue damage.Vitamin E neutralizes lipid peroxidation arising from the effect of free oxygen radicals.In this study, the protective effect of vitamin E against possible MTX-related testicular damage was analyzed.Method: Thirty two mature male Spraque dawley rats were grouped as MTX, Vitamin E, MTX+Vitamin, Control groups. 20 mg/kg MTX intraperitoneal (i.p.) was applied to MTX Group in the first day; 100mg/kg i.p. vitamin E was applied to Vitamin E Group for 5 days; 20 mg/kg i.p. MTX in the first day and 100 mg/kg i.p. vitamin E for 5 days were applied to MTX+Vitamin E Group;2 ml physiological saline solution (i.p.) was applied to Control Group for 5 days. Histopathology, flow cytometry and apoptosis were evaluated on testicular tissue. Result: Apoptotic Index (%) and testicular damage were highest for MTX Group, and significant decrease was observed for MTX+Vitamin E Group compared to MTX Group.Seminiferous tubule size significant decreased in MTX Group and it increased in MTX+Vitamin E Group compared to MTX Group. No significant difference was found between MTX and MTX+Vitamin E Groups regarding germinal epithelium thickness and testicle weights.Conclusion: The results show that MTX can cause structural disruptions in testicles and vitamin E can rehabilitate MTX-related testicular damage., Amaç: Metotreksat oksidatif strese bağlı doku hasarına neden olmaktadır. E vitamini serbest oksijen radikallerinden etkisiyle oluşan lipt peroksidasyonunu nötralize eder. Bu çalışma ile E vitamininin olası Metotreksat bağlantılı testiküler hasara karşı koruyucu etkileri analiz edildi.Materyal-Metot: Otuz iki erkek Spraque dawley sıçan MTX, E Vitamini, MTX+ E Vitamini, Kontrol olarak gruplandırıldı. İlk gün MTX grubuna intraperitoneal(i.p.) 20 mg/kg MTX, E vitamini grubuna 5 gün 100 mg/kg i.p. E vitamini, MTX+E Vitamini grubuna ilk gün 20 mg/kg i.p. MTX ve 5 gün 100 mg/kg i.p. E vitamini uygulandı. Kontrol grubuna 5 gün 2 ml serum fizyolojik (i.p.) uygulandı. Testiküler dokuda histopatolojik, akım sitometrik analizler yapıldı ve apoptoz değerlendirildi.Bulgular: Apoptotik indeks (%) ve testiküler hasar en fazla MTX grubundayken, MTX+E Vitamini grubunda MTX grubuna göre anlamlı derecede azalma gözlendi. Seminifer tubule çapı MTX grubunda belirgin şekilde azalırken, MTX+E Vitamini grubunda MTX grubuna göre artış gözlendi. MTX ve MTX+E Vitamini grupları arasında germinal epitelyum ve testiküler ağırlıkta açısında anlamlı farklılık yoktu.Sonuç: Sonuçlara göre MTX testislerde yapısal hasara neden olabilirken, E vitamini MTX'e bağlı testiküler hasarı düzeltebilir.
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- 2020
8. Protective Effects of Vitamin E against Methotrexate-Induced Testicular Damage in Rats: Histopathologic and flow cytometric study
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KURT, Şeyma, primary, ERİŞGİN, Züleyha, additional, TEKELİOĞLU, Yavuz, additional, AKMAN, Ahmet, additional, and TÜREDİ, Sibel, additional
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- 2020
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9. The Scientific Approach to the Possible Effects of Electromagnetic Fields With 900-Megahertz Frequency Waves on Biological Systems: Review
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TÜREDİ, Sibel, primary, HANCI, Hatice, additional, and ODACİ, Ersan, additional
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- 2020
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10. Sıçanlarda deneysel siyatik sinir hasarı üzerine quercetinin etkilerinin morfolojik ve biyokimyasal olarak değerlendirilmesi
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Türedi, Sibel, Yuluğ, Esin, and Histoloji ve Embriyoloji Anabilim Dalı
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Morphology ,Histology and Embryology ,Lipid peroxidation ,Peripheral nerve injuries ,Quercetin ,Apoptosis ,Sciatic nerve ,Histoloji ve Embriyoloji ,Rats - Abstract
Bu çalışmada siyatik sinir ezilme hasarı modelinde, Quercetinin nöroprotektif ve antioksidan etkinliğini histopatolojik, morfometrik ve biyokimyasal yöntemler ile değerlendirmeyi amaçladıkÇalışmamızda 48 adet 10-12 haftalık Spraque Dawley türü erkek sıçanlar rastgele 8 gruba ayrıldı. Gruplar,Sham (S-7; S-28), Quercetin (Q-7; Q-28; 200mg/kg/7 gün), travma (T-7; T-28; siyatik sinirde mikro vasküler klemp ile 1 dk'lık ezilme) ve travma+Quercetin (T+Q-7; T+Q-28; travma ile birlikte Quercetin 200mg/kg/7 gün) olarak isimlendirildi, hasarlanmayı takiben 7. ve 28. günde sakrifiye edildi. Tüm gruplardan elde edilen sinir ve kas dokularında, oksidan-antioksidan biyokimaysal parametreler ile birlikte histopatolojik olarak; Toluidin blue, Hematoksilen&Eozin ve Masson - Trikrom boyamaları ile morfoloji değerlendirmeleri yapıldı.Morfoloji değerlendirmelerinde, T-7 ve T-28 gruplarında akson ve miyelin kılıfta yaygın dejenerasyon, miyelin kılıfın konsantrik lamellar yapısında ciddi derecede bozulma ve aksonal şişme izlendi. Miyelin kılıf kalınlığı, sinir lifi çapı ve miyelinli sinir lifi sayısı belirgin şekilde azaldı ve Apoptotik İndekste (AI) artış izlendi. T+Q-7 ve T+Q-28 gruplarında ise morfolojik olarak rejenerasyon sürecinin başladığı, hücresel hasarın ve aksonal yapının iyileşmeye başladığı gözlendi. Ayrıca AI belirgin derecede azaldı. Bu değerlerin T+Q-28 grubu S-28 ile karşılaştırıldığında normale yakın olduğu gözlendi. Biyokimyasal parametrelerden malondialdehit (MDA) ve süperoksit dismutaz seviyeleri, T-7 grubunda S-7 ile karşılaştırıldığında bir miktar artış izlensede anlamlı değildi; T-28 grubunda katalaz aktivitesinde belirgin bir düşüş izlendi. T+Q-7 ile T-7 grubu karşılaştırıldığında T+Q-7 grubunda MDA seviyesi anlamlı derecede azaldı, serum katalaz aktivitesi ise arttı. Ezilme tipi siyatik sinir yaralanmasında, Quercetinin sinir rejenerasyonuna olumlu katkı sağladığı, yaralı bölgede fibrozis ve lipid peroksidasyonunu önleyerek iyileşme süresini kısaltabileceği sonucuna varıldı. The purpose of this study was to evaluate the neuroprotective and antioxidant effectiveness of quercetin in a model of sciatic nerve crush injury using histopathological, morphometric and biochemical methods. Forty-eight male Sprague Dawley rats aged 10-12 weeks were randomly assigned into eight groups; sham (S-7; S-28), quercetin (Q-7 and Q-28; 200 mg/kg/7 days), trauma (T-7 and T-28; 1-min crush of the sciatic nerve with micro vascular clamps) and trauma + quercetin (T+Q-7 and T+Q-28; trauma and quercetin 200 mg/kg/7 days), Animals were sacrificed 7 and 28 days after injury. Oxidant-antioxidant biochemical parameters were analyzed in muscle and nerve tissues from all groups, together with morphological evaluation at histopathological staining with toluidine blue, hematoxylin and eosin and Masson's trichrome. At morphological evaluation, diffuse degeneration was observed in axons and the myelin sheath in groups T-7 and T-28, together with severe impairment of the concentric lamellar structure of the myelin sheath and axonal swelling. Myelin sheath thickness, nerve fiber diameter and myelinated nerve fiber numbers decreased significantly, while apoptotic index (AI) increased. In groups T+Q-7 and T+Q-28, the morphological regeneration process and healing of cellular damage and axonal structure were observed to have begun. AI also decreased significantly. Morphology was close to normal in T+Q-28 compared to S-28. In terms of biochemical parameters, Malondialdehyde and superoxide dismutase activity were increased, when group T-7 was compared with group S-7, this was not statistically significant. A significant decrease was observed in CAT activity in group T-28. When group T+Q-7 was compared with group T-7, malondialdehyde values decreased significantly; catalase activity increased.We concluded that quercetin makes a positive contribution to crush-type injuries of the sciatic nerve and can shorten the healing process by preventing lipid peroxidation and fibrosis in the injured region. 134
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- 2017
11. 900 Megahertz Dalga Frekansına Sahip Elektromanyetik Alanın Biyolojik Sistemler Üzerindeki Olası Etkilerine Bilimsel Yaklaşım: Derleme.
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TÜREDİ, Sibel, HANCI, Hatice, and ODACI, Ersan
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HUMAN body , *ELECTROMAGNETIC fields , *HEART diseases , *TUMORS , *CELL phones , *REPRODUCTIVE health , *SMARTPHONES - Abstract
The use of mobile phones has become widespread rapidly with the increase in the capacity of mobile phones/smart phones and the decrease of prices in novadays, However, many researchers have turned to the effects of electromagnetic fields on the human body whit the idea that the overuse of every technological advance will be have a negative aspect. A large number of studies investigating EMF exposure and the health effects of it focused on particularly cancer, reproductive health, diseases caused by nevre tissue necrosis and hearth diseases. Extremely low frequency magnetic fields has been classified in group 2B which is the category of limited evidence of carcinogenity in humans and sufficient evidence of carcinogenity in experimental animals by The International Agency for Research on Cancer. Therefore, to examine the biological effects caused by cell phone induced radiation exposure appears as an extremely serious and difficult research process. In this study, possible biological effects of electromagnetic field were reviewed in the light of the literature sources, in order to community awareness about exposure and to give different ideas to researchers. [ABSTRACT FROM AUTHOR]
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- 2020
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12. Biochemical and pathological changes in the male rat kidney and bladder following exposure to continuous 900-MHz electromagnetic field on postnatal days 22–59
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Türedi, Sibel, primary, Kerimoğlu, Gökçen, additional, Mercantepe, Tolga, additional, and Odacı, Ersan, additional
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- 2017
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13. Effects of propolis against cisplatin induced experimental kidney damage in rats
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Türedi, Sibel, primary
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- 2017
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14. Disruption of the ovarian follicle reservoir of prepubertal rats following prenatal exposure to a continuous 900-MHz electromagnetic field
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Türedi, Sibel, primary, Hancı, Hatice, additional, Çolakoğlu, Serdar, additional, Kaya, Haydar, additional, and Odacı, Ersan, additional
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- 2016
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15. A morphological and biochemical evaluation of the effects of quercetin on experimental sciatic nerve damage in rats.
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Türedi, Sibel, Yuluğ, Esin, Alver, Ahmet, Bodur, Akin, and İnce, İmran
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QUERCETIN , *NEUROPROTECTIVE agents , *NERVOUS system regeneration , *ANTIOXIDANTS , *THERAPEUTICS - Abstract
The present study evaluated the neuroprotective and antioxidant effects of quercetin in a rat model of sciatic nerve crush injury using histopathological, morphometric and biochemical methods. A total of 48 male Sprague Dawley rats, aged 10-12 weeks old were randomly divided into eight groups, consisting of two sham groups (S‑7, S‑28), three quercetin‑treated groups (Q‑7, Q‑28; 200 mg/kg/7 days), trauma (T‑7, T‑28; 1 min sciatic nerve crush injury) and three trauma+quercetin groups (T+Q‑7, T+Q‑28; trauma+quercetin 200 mg/kg/7 days). Rats were sacrificed on day 7 or 28. Oxidant‑antioxidant biochemical parameters in nerve tissues from all groups were analyzed using histopathological staining with toluidine blue and Masson's trichrome. DNA fragmentations were identified using terminal deoxynucleotidyl transferase deoxyuridine triphosphate nick‑end labeling in cells from each tissue sample. Degeneration of the axons and myelin sheath, the breakdown of the concentric lamellar structure of the myelin sheath and axonal swelling were observed in groups T‑7 and T‑28. Myelin sheath thicknesses, nerve fiber diameters and the number of myelinated nerve fibers decreased, while the apoptotic index (AI) increased in the T‑7 and T‑28 groups. However, it was observed that nerve regeneration began in the T+Q‑7 and T+Q‑28 groups compared with the sham groups, together with the healing of cellular damage and axonal structure and a decrease in the AI. Malondialdehyde and superoxide dismutase activity did not differ significantly between the T‑7 and S‑7 groups. However, catalase activity significantly decreased in the T‑28 group when compared with the sham 7 day group. Tissue malondialdehyde levels significantly increased, while serum catalase activity increased in the T+Q‑7 group compared with the T‑7 group. These results suggest that quercetin has beneficial effects on nerve regeneration and may shorten the healing period in crush‑type sciatic nerve injuries. [ABSTRACT FROM AUTHOR]
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- 2018
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16. Sıçanlarda doksorubisin ile oluşturulmuş deneysel testis hasarı üzerine resveratrolün etkileri
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Türedi, Sibel, Yuluğ, Esin, and Histoloji ve Embriyoloji Anabilim Dalı
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Doxorubicin ,Resveratrol ,Oxidative stress ,Histology and Embryology ,Testis ,Histoloji ve Embriyoloji ,Rats - Abstract
Bu çalışmada doksorubisin'in sıçan testisi üzerindeki olumsuz etkilerine karşı resveratrolün koruyucu etkisinin olup olmadığının araştırılması amaçlandı.Çalışma için 34 adet SpraqueDawley cinsi erkek sıçan 5 gruba ayrıldı ve deney süresi 21 gün olarak belirlendi. Grup 1'e (kontrol grubu) tek doz %0.9 izotonik sodyum klorür, Grup 2'ye tek doz 10 mg/kg doksorubisin intraperitoneal olarak enjekte edildi. Grup 3'e ise hem tek doz 10 mg/kg doksorubisin, hem de eşzamanlı 20 mg/kg/gün intraperitoneal resveratrol verildi. Grup 4'e sadece 20 mg/kg/gün resveratrol, Grup 5'e ise sadece resveratrol çözücüsü olarak kullanılan dimetil sülfoksit deney süresince uygulandı. Deney sonunda hayvanların tümü sakrifiye edilerek testisleri alındı ve epididimisleri ayrıldı. Testis ve epididimis doku örnekleri ışık mikroskobunda histopatolojik olarak incelendi. Testiste seminifer tübül hasar değerlendirmesi Johnsen skorlama sistemi ile belirlendi. Testisteki apoptozisi değerlendirmek için TUNEL tekniği kullanıldı. Epididimal sperm analizinde sperm sayısı, motilite ve morfolojisi değerlendirildi. Biyokimyasal olarak kanda ve dokuda oksidatif stres parametreleri incelendi.Histopatolojik olarak, Grup 2'nin testis dokusunda seminifer tübül bazal membranında düzensizlikler, lümende germinal epitel hücreleri, seminifer tübül germinal epitelinde düzensizlikler ve açılmalar izlendi. Sperm analizinde; sperm sayısında, motilitesinde azalma ve morfolojisinde bozulma olduğu gözlendi. Grup 3'te bu histopatolojik bulgularda düzelme olduğu gözlendi. Grup 2'de lipid peroksidasyonu artmıştı. Grup 3'te ise lipid peroksidasyonu azaldı ve GP-x, GSH seviyeleri yüksekti.Bulgularımız doksorubisinin testiküler fonksiyonu bozduğunu ve resveratrol tedavisinin bu toksisiteyi önleyebileceğini göstermektedir. Sonuç olarak resveratrolün, kanser hastalarında doksorubisin tedavisi sonrasında oluşan testis toksisitesinde faydalı etkileri ile kullanılabileceğini düşünmekteyiz. The aim of this study was to investigate the negative effects of doxorubicin on rat testes and to highlight the protective effect of resveratrol on these parameters.Thirty-four male Spraque Dawley rats were divided into 5 groups for an experiment of 21 days. Group 1 was administered single dose saline and served as control; Group 2 was single dose received intraperitoneal injections of doxorubicin (10mg/kg). Group 3 was administered both single dose doxorubicin (10mg/kg) and resveratrol (20 mg/kg/day). Group 4 only received intraperitoneal injections of resveratrol (20 mg/kg/day). Group 5 was only received intraperitoneal injections of dimethyl sulfoxide. At the end of the experimental period, the rats were sacrified, all testes were removed and epididymis were separated. The histopathologic examination of testicular tissue and epididymis was performed with light microscope. Johnsen scoring system was used to determine the seminiferous tubule damage. The TUNEL technique was used to determine the apoptosis in testes. In addition epididiymal semen quality was evaluated in terms of sperm count, motility and morphology. Oxidative stress marker levels as biochemical were evaluated in blood and tissues.Histopathologically, testicular tissue showed seminiferous tubule irregularities in the basal membrane, germinal epithelial cells in the lumen, irregularities and vacuoles in the germinal epithelium of seminiferous tubules. Semen analysis was observed, sperm count, motility and increase in abnormal sperm rates. It was observed that Group 3 recovered in these histopathological findings. Decreased lipid peroxidation in Group 3 and GP-x, GSH levels were increased.Our data indicate that doxorubicin treatment markedly impaired testicular function and that treatment with resveratrol might prevent this toxicity in rats. In conclusion, we think that resveratrol could be used with its beneficial effects testes toxicity after DOX treatment in cancer patients. 116
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- 2012
17. The effects of prenatal exposure to a 900-MHz electromagnetic field on the 21-day-old male rat heart
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Türedi, Sibel, primary, Hancı, Hatice, additional, Topal, Zehra, additional, Ünal, Deniz, additional, Mercantepe, Tolga, additional, Bozkurt, İlyas, additional, Kaya, Haydar, additional, and Odacı, Ersan, additional
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- 2014
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18. The short term effects of resveratrol on ischemia–reperfusion injury in rat testis
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Yuluğ, Esin, primary, Türedi, Sibel, additional, Karagüzel, Ersagun, additional, Kutlu, Ömer, additional, Menteşe, Ahmet, additional, and Alver, Ahmet, additional
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- 2014
- Full Text
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19. Effects of Resveratrol on Methotrexate-Induced Testicular Damage in Rats
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Yuluğ, Esin, primary, Türedi, Sibel, additional, Alver, Ahmet, additional, Türedi, Süleyman, additional, and Kahraman, Cemil, additional
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- 2013
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20. The effects of prenatal exposure to a 900-MHz electromagnetic field on the 21-day-old male rat heart.
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Türedi, Sibel, Hancı, Hatice, Topal, Zehra, Ünal, Deniz, Mercantepe, Tolga, Bozkurt, İlyas, Kaya, Haydar, and Odacı, Ersan
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ELECTROMAGNETIC fields , *CELL phones , *HEART physiology , *PRENATAL exposure delayed effects , *CONTROL groups , *HISTOPATHOLOGY , *OXIDATIVE stress , *LABORATORY rats - Abstract
The growing spread of mobile phone use is raising concerns about the effect on human health of the electromagnetic field (EMF) these devices emit. The purpose of this study was to investigate the effects on rat pup heart tissue of prenatal exposure to a 900 megahertz (MHz) EMF. For this purpose, pregnant rats were divided into experimental and control groups. Experimental group rats were exposed to a 900 MHz EMF (1 h/d) on days 13–21 of pregnancy. Measurements were performed with rats inside the exposure box in order to determine the distribution of EMF intensity. Our measurements showed that pregnant experimental group rats were exposed to a mean electrical field intensity of 13.77 V/m inside the box (0.50 W/m2). This study continued with male rat pups obtained from both groups. Pups were sacrificed on postnatal day 21, and the heart tissues were extracted. Malondialdehyde, superoxide dismutase and catalase values were significantly higher in the experimental group rats, while glutathione values were lower. Light microscopy revealed irregularities in heart muscle fibers and apoptotic changes in the experimental group. Electron microscopy revealed crista loss and swelling in the mitochondria, degeneration in myofibrils and structural impairments in Z bands. Our study results suggest that exposure to EMF in the prenatal period causes oxidative stress and histopathological changes in male rat pup heart tissue. [ABSTRACT FROM PUBLISHER]
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- 2015
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21. Effects of resveratrol on methotrexate-induced testicular damage in rats.
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Yuluğ E, Türedi S, Alver A, Türedi S, and Kahraman C
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- Animals, Catalase metabolism, In Situ Nick-End Labeling, Male, Malondialdehyde metabolism, Rats, Rats, Sprague-Dawley, Resveratrol, Superoxide Dismutase metabolism, Testis enzymology, Testis metabolism, Antimetabolites, Antineoplastic toxicity, Antioxidants pharmacology, Methotrexate toxicity, Stilbenes pharmacology, Testis drug effects
- Abstract
This study investigated the probable protective effects of resveratrol (RES), an antioxidant, against methotrexate- (MTX-) induced testis damage. Twenty-four male Sprague Dawley rats were randomly divided into four groups: control, RES, MTX, and MTX + RES groups. Rats were sacrificed at the end of the experiment. Plasma and tissue malondialdehyde (MDA) levels, superoxide dismutase (SOD) and catalase (CAT) activity in tissue, testicular histopathological damage scores, and testicular and epididymal epithelial apoptotic index (AI) were evaluated. The MTX group had significantly higher plasma and tissue MDA levels and significantly lower SOD and CAT activity than those of the control group. In the MTX + RES group, plasma and tissue MDA levels decreased significantly and SOD activity rose significantly compared to the MTX group. The MTX group had significantly lower Johnsen's testicular biopsy score (JTBS) values than those of the control group. JTBS was significantly higher in the MTX + RES group than in the MTX group. AI increased in the testis and epididymis in the MTX group and significantly decreased in the MTX + RES group. Our results indicate that RES has protective effects against MTX-induced testis damage at the biochemical, histopathological, and apoptotic levels.
- Published
- 2013
- Full Text
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