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Yıl:2019; Cilt: 56; Sayı: 2>> Özet
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Nöropsikiyatri Arşivi; 2019;56(2):144-149
Resveratrolün Streptozotosin ile İndüklenen Diyabetik Sıçanlarda Anksiyolitik ve Antidepresan Benzeri Etkileri
TD Şahin, SS Göçmez, FC Eraldemir, T Utkan
Kocaeli Üniversitesi, Kocaeli
Amaç: Diyabet, anksiyete ve depresyonla ilişkilidir. Antioksidan özelliğe sahip en güçlü doğal polifenollerden biri olan resveratrolün diyabette yararlı etkileri gösterilmiştir. Bu çalışmada, resveratrolün diyabetik sıçanlarda gözlenen depresyon ve anksiyete benzeri davranışlar üzerindeki etkileri araştırılmıştır. Yöntem: Erişkin Wistar albino erkek sıçanlar kontrol ve diyabetik olarak iki ana gruba, bu gruplar da randomize olarak salin ile tedavi edilen, DMSO ile tedavi edilen, resveratrol ile tedavi edilen ve imipramin ile tedavi edilen hayvanlar olmak üzere alt gruplara ayrıldı (n=10). Diyabet tek doz (50 mg/kg) intraperitoneal streptozotosin (STZ) enjeksiyonuyla oluşturuldu ve STZ enjeksiyonundan iki gün sonra hiperglisemi (>300 mg/ dl) saptanan denekler diyabetik olarak belirlendi. Tedavi gruplarındaki sıçanlara 4 hafta boyunca her gün intraperitoneal resveratrol (20 mg/ kg) ve imipramin (10 mg/kg) enjeksiyonu yapıldı. 4 haftalık tedavi süreci sonunda kuyruktan asma testi (TST), zorlu yüzdürme testi (FST), yükseltilmiş artı labirent testi (EPM) ve locomotor aktivite testi uygulandı. Serum süperoksit dismutaz (SOD) ve NADPH oksidaz (Nox) düzeylerini değerlendirmek için hayvanlardan kan örnekleri toplandı. Bulgular: Diyabetik sıçanlar kuyruktan asma ve zorlu yüzdürme testinde depresyon benzeri, yükseltilmiş artı labirent testinde anksiyete benzeri davranışlar gösterdiler. Resveratrol ve imipramin anksiyete ve depresyon benzeri davranışları, lokomotor aktiviteyi etkilemeden azalttı. Diyabetik sıçanlarda SOD düzeylerinde anlamlı olarak azalma, Nox düzeylerinde ise anlamlı olarak artma gözlendi. Resveratrol tedavisi bu düzeyleri normale geri döndürürken imipramin tedavisi ne SOD ne de Nox düzeylerini etkilemedi. Sonuç: Bu çalışma kronik resveratrol tedavisinin diyabette gelişen anksiyete ve depresyonu oksidatif stresi inhibe ederek tedavi edebileceğini göstermiştir.
Anxiolytic-Like and Antidepressant-Like Effects of Resveratrol in Streptozotocin-Induced Diabetic Rats
Introduction: Diabetes is associated with anxiety and depression. Resveratrol, one of the most potent natural polyphenols with antioxidant properties, has been demonstrated to have benefits against diabetes. In the current study, we investigated the effects of resveratrol on depression and anxiety-like behaviors in diabetic rats. Methods: Adult male Wistar albino rats were assigned for control and diabetic groups, and these groups were divided into four subgroups as follows: Saline-treated, DMSO-treated, resveratrol-treated and imipramine-treated animals (n=10). Diabetes was induced by a single intraperitoneal injection of streptozotocin (STZ) (50 mg/kg), and 2 days after the STZ injection the rats having hyperglycemia (>300 mg/ dl) were assigned to be diabetic. Rats in treatment groups were injected intraperitoneally with resveratrol (20 mg/kg) and imipramine (10 mg/ kg) for 4 weeks. After 4-week-treatment period, tail suspension test (TST), forced swimming test (FST), elevated plus maze test (EPM) and locomotor activity test were performed. Blood samples were collected to estimate serum superoxide dismutase (SOD) and NADPH oxidase (Nox) levels. Results: Diabetic rats displayed depressive-like behaviors in the FST and TST, and anxiety-like behaviors in the EPM. Resveratrol and imipramine decreased anxiety-like and depressive-like behaviors without affecting locomotor activity in diabetic rats. A significant reduction in SOD levels and a marked increase in Nox levels were observed in diabetic rats. Resveratrol treatment normalized these levels, while imipramine did not affect neither SOD nor Nox levels. Conclusion: This study indicates that chronic resveratrol treatment may able to treat comorbid anxiety-and depressive-like behaviors in diabetes through inhibition of oxidative stress.

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