Analysis of oxidant-antioxidant parameters in experimental spinal cord injury models created with clip-compression and weight-drop models

Öz

Klip-kompresyon ve ağırlık düşürme modelleriyle oluşturulmuş deneysel omurilik yaralanması modellerinde oksidan-antioksidan parametrelerin analizi

Öz

Amaç: Deneysel omurilik yaralanmalarında hasarın takibi ve hücrelerin hasara yanıtını değerlendirmek ana unsurlardan biridir. Bu çalışmada iki farklı deneysel omurilik travma modelinde serum ve dokuda oksidan-antioksidan maddelerin değişimi incelenmiştir. Gereç ve yöntem: Çalışmada 3 grupta 6 adet Wistar rat kullanıldı. Kontrol grubuna (A grubu) sadece laminektomi yapıldı. Ağırlık grubuna (B grubu) laminektomi ve ağırlık düşürme modeli ile, klip-kompresyon grubuna (C grubu) laminektomi ve klip kompresyon tekniği ile spinal kord hasarı oluşturuldu. Fonksiyonel olarak 12. saat, 1., 3. 5. 7. Gün BBB skorları ile değerlendirildi. Biokimyasal olarak 12. saatde, 1., 5. ve 7. gün alınan kuyruk kanlarında oksidan-antioksidan maddeler incelendi. 7.gün sakrifiye edilen deneklerin omurilik dokularında Total antioksidan kapasite (TAS), Total oksidan kapasite (TOS) ve OSİ (oksidatif stres indeksi) bakıldı. Bulgular A grubuna göre B ve C grubunda Disülfid(SS)/Total tiol(TT), SS/Native tiol(NT) ve NT/TT oranları anlamlı olarak farklı bulunmuştur. Katalaz için en erken anlamlı fark 5. gün ortaya çıkmıştır. İMA (iskemi modifiye albümin) erken evrede artsa da hasarın 3. gününden itibaren tekrar azalıp 7. gün normale yakın değerlere gelmiştir. C ile B grubu kıyaslandığında parametrelerin C grubunda daha anlamlı değişiklik gösterdiği görülmüştür. Sonuç Travma modellerinde oksidatif-antioksidatif markerlar hasarın şiddetini göstermede ve takibinde kullanılabilir. Klip kompresyon yöntemi, serumda oksidatif stres parametrelerini ölçmek için daha başarılı bir yöntemdir.

Anahtar Kelimeler

• Oksidatif stress
• spinal kord yaralanması
• TAS
• TOS

Kaynakça

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