Journals / Klinik Psikiyatri Dergisi / 2012 / Cilt: 15 - Sayı: 1

The effects of atrial natriuretic peptide on behavioral despair in rats exposed to chronic immobilization stress

Atrial natriüretik peptidin kronik immobilizasyon stresine maruz bırakılmış sıçanlarda davranışsal umutsuzluk üzerine etkisi

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7–17
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Conclusion: These results suggest that in Porsolt's swimming test, both chronic mild stress and intracerebroventricular ANP administration in the rats exposed to chronic mild (immobilization) stress have preventive effects on the development of behavioral despair, but the direct role of ANP in these effects is not clear.

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Objective & Hypothesis:Objectives: Anxiolytic efficacy of atrial natriuretic peptide (ANP) was shown in experimental studies.
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Key Findings & Data:Method: In this study, Wistar-Albino male adult rats weighing 250- 300 g have been used.
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Conclusion & Impact:Conclusion: These results suggest that in Porsolt's swimming test, both chronic mild stress and intracerebroventricular ANP administration in the rats exposed to chronic mild (immobilization) stress have preventive effects on the development of behavioral despair, but the direct role of ANP in these effects is not clear.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Sıçan · Wistar · Hayvanlar

Abstract

Objectives: Anxiolytic efficacy of atrial natriuretic peptide (ANP) was shown in experimental studies. In our study, we evaluated the effect of intracerebroventricular administration of ANP on behavioral despair in rats exposed to chronic immobilization stress. Method: In this study, Wistar-Albino male adult rats weighing 250- 300 g have been used. Study animals were randomly assigned into four groups. 1-Control group: Group did not undergone surgical intervention and did not received substance injection (n=8). 2-Sham operated group: Group was administered 5 μl physiologic serum via intracerebroventricular route (n=8). 3-Chronic immobilization group: Group was exposed to 7 minutes daily immobilization stress for two weeks and was administered 5 μl physiologic serum via intracerebroventricular route (n=8). 4-ANP group: Group was exposed to 7 minutes daily immobilization stress for two weeks and administered 0.5 μg/5 μl intracerebroventricular ANP (n=8). As behavioral test, Porsolt's swimming test was used. The results were analyzed statistically by using one way ANOVA-Tukey and Wilcoxon tests. Results: In the Porsolt's Swimming test, the control and the sham operated group animals exhibited the well-documented behavioral despair by a significant increase in immobilization time when compared with that of the pre-test. On the other hand, compared with the control and the sham operated group, animals in the chronic immobilization group and ANP administered group did not show behavioral despair obviously. Conclusion: These results suggest that in Porsolt's swimming test, both chronic mild stress and intracerebroventricular ANP administration in the rats exposed to chronic mild (immobilization) stress have preventive effects on the development of behavioral despair, but the direct role of ANP in these effects is not clear.

Özet

Amaç: Atrial natriüretik peptidin (ANP) anksiyolitik etkinliği deneysel olarak gösterilmiştir. Çalışmamızda intraserebroventriküler olarak uygulanan ANP'nin kronik immobilizasyon stresine maruz bırakılmış sıçanlarda davranışsal umutsuzluk üzerine etkisi araştırılmıştır. Yöntem: Çalışmada 250-300 g ağırlığında, Wistar-albino erkek erişkin sıçanlar kullanıldı. Deney hayvanları 4 gruba ayrıldı. 1-Kontrol grubu: Cerrahi girişim ve madde enjeksiyonu yapılmayan grup (n=8). 2-Sham grubu: ıntraserebroventriküler 5 μl serum fizyolojik uygulanan grup (n=8). 3-Kronik immobil grup: iki hafta süreyle günde 7'şer dakika immobilizasyon stresi ve intraserebroventriküler 5 μl serum fizyolojik uygulanan grup (n=8). 4- ANP grubu: iki hafta süreyle günde 7'şer dakika immobilizasyon stresi ve 0.5 μg/5 μl intraserebroventriküler ANP uygulanan grup (n=8). Davranışsal test olarak Porsolt yüzme testi kullanıldı. Sonuçlar tek yönlü ANOVA ve Wilcoxon testleri kullanılarak değerlendirildi. Bulgular: Porsolt yüzme testinde kontrol ve sham gruplarında immobilizasyon süreleri uzamış ve davranışsal umutsuzluk gelişmiştir. Diğer taraftan kontrol ve sham grupları ile karşılaştırıldığında kronik immobil ve ANP gruplarında belirgin bir davranışsal umutsuzluk durumu gelişmemiştir. Sonuç: Bu sonuçlar Porsolt yüzme testinde hem kronik hafif derecede stresin hem de kronik hafif derecede strese maruz bırakılmış sıçanlarda intraserebroventriküler ANP uygulamasının davranışsal umutsuzluk gelişmesi üzerinde koruyucu etkisi olduğunu göstermektedir. Diğer taraftan bu etkinlikte ANP'nin rolü yeterince aydınlatılamamıştır.

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Cite This Article

YILDIRIM, E. A., MENGİ, M., TURHAN, S., YURDAKOŞ, E. (2012). The effects of atrial natriuretic peptide on behavioral despair in rats exposed to chronic immobilization stress. Klinik Psikiyatri Dergisi, Cilt: 15 - Sayı: 1, 7–17. https://ajindex.com/articles/207399

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