TY - JOUR T1 - Can Leflunomide prevent Methotrexate induced liver toxicity? TT - Leflunomid Methotrexat'a bağlı karaciğer toksisitesini önleyebilir mi? AU - Kutluana, Ufuk AU - Oruç, Nevin AU - Dinçer Tekekoğlu, Selma AU - Çallı Demirkan, Neşe AU - Akdağ, Beyza AU - Yılmaz, Mustafa AU - Yönetçi, Nadir AU - Özütemiz, Ömer PY - 2018 DA - September Y2 - 2018 DO - 10.31362/patd.451731 JF - Pamukkale Medical Journal JO - Pam Tıp Derg PB - Pamukkale University WT - DergiPark SN - 1308-0865 SP - 321 EP - 327 VL - 11 IS - 3 LA - en AB - INTRODUCTION: Long-term clinical use of Methotrexate is to connect with araised risk of liver injury and fibrosis. Leflunomide is a is adisease-modifying drug. Leflunomide has a powerful inhibitory effect on nuclearfactor kappa B activation. Leflunomide also presents antioxidant activity. Inthis experimental study, we aimed to investigate the effects of Leflunomidetreatment on Methotrexate -induced hepatotoxicity.METHODS: Thirty-nine rats were divided into 4 groups. A single dose of 20mg/kgMethotrexate was injected intraperitoneally for Methotrexate-inducedhepatotoxicity. After induction, Leflunomide (10 mg/kg) was administered intothe stomach for consecutive 5 days. Then, serum samples and homogenated livertissues were collected for analyzed serum alanine aminotransferase, alkalinephosphatase, superoxide dismutase activity, myeloperoxidase activity,glutathione levels and assessment of histopathology. RESULTS: Leflunomide treatment significantly ameliorated total histopathologicscore according to semiquantitative scale compared to the untreated group,(Pathological score 1.1+0.7 versus 5.1+2 respectively, p<0,01). Leflunomidetreatment significantly ameliorated Kuppfer cell activation. (Elevation of theactivated Kupffer cells score were 0.2+0.6 and 2.5+1.01 respectively, p =0.001). The serum alanine aminotransferase, alkaline phosphatase levels werelower and glutathione levels, myeloperoxidase activity, and superoxidedismutase activity were similar between Leflunomide treated and untreatedMethotrexate toxicity groups. DISCUSSION AND CONCLUSION: Leflunomide treatment ameliorated Methotrexateinduced liver toxicity in an experimental model. KW - Leflunomide KW - methotrexate KW - liver toxicity N2 - GİRİŞ ve AMAÇ: Uzun dönem Methotrexat kullanımı artmış karaciğer hasarı vefibrozis riski ile ilişkilidir. Leflunomid hastalık modifiye edici bir ilaçtır.Leflunomid nükleer faktör kappa B aktivasyonunun güçlü bir inhibitörüdür. Aynızamanda anti-oksidan aktivitesi de vardır. Bu deneysel çalışmada Methotrexat'ınneden olduğu karaciğer toksisitesinde Leflunomid tedavisinin etkinliğiaraştırılmıştır. YÖNTEM ve GEREÇLER: 39 rat 4 gruba ayrılmıştır. Methotrexat'a bağlı karaciğertoksisitesi tek doz 20mg/kg Methotrexat'ın periton içine injeksiyonu ileoluşturulmuştur. Ardından Leflunomid 5 gün boyunca 10 mg/kg dozda verilmiştir.Ardından serum örnekleri ve homojenize karaciğer örnekleri toplanmıştır. Serumalanin aminotransferaz, alkalin fosfataz, superoxide dismutaz, myeloperoxidazaktivitesi, glutatyon düzeyleri çalışılmış ve histopatolojik değerlendirmeyapılmıştır. BULGULAR: Leflunomid tedavisi tedavi almayan gruba göre karaciğersemikantitatif skalaya bağlı histopatolojik değerlendirmede anlamlı düzelmesağlamıştır (Patolojik skor 1.1+0.7 ve 5.1+2, p<0,01). Leflunomid tedavisiKuppfer hücre aktivasyonunu anlamlı derecede iyileştirmiştir. (Aktive Kuppferhücre skorunda yükselme 0.2+0.6 ve 2.5+1.01, p = 0.001). Leflunomid tedavisialan grupta Methotrexat toksisite grubuna göre serum alanin aminotransferaz,alkalin fosfataz düzeyleri düşük, glutatyon seviyesi, superoxide dismutaz vemyeloperoxidaz aktivitesi benzer bulunmuştur. 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