Journals / Türk Biyokimya Dergisi / 2007 / Cilt: 32 - Sayı: 4

Basıncın seçilmiş iki sıçan türünde dopamine salgılanması üzerine etkisi: Voltametrik in vivo çalışma

Effect of pressure on the dopamine release in two selected lines of rats: An in vivo voltametric study

Pages
148–153
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Results show that during pressure experiments Roman Low-avoidance rats presented a greater increase in dopamine than Roman High –avoidance rats.

📌 3 Key Takeaways

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Objective & Hypothesis:When human divers and experimental animals are exposed to high pressure, they develop brain and bio-behavioural disorders.
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Key Findings & Data:Since it has been demonstrated that pressure exposure increase striatal dopamine release, the present experiments were intended to investigate whether it is viewed as a biochemical manifestation of stress caused by pressure environment or else may reflect the effect of pressure in neurochemical processes.
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Conclusion & Impact:Results show that during pressure experiments Roman Low-avoidance rats presented a greater increase in dopamine than Roman High –avoidance rats.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

When human divers and experimental animals are exposed to high pressure, they develop brain and bio-behavioural disorders. Since it has been demonstrated that pressure exposure increase striatal dopamine release, the present experiments were intended to investigate whether it is viewed as a biochemical manifestation of stress caused by pressure environment or else may reflect the effect of pressure in neurochemical processes. Two genetically selected lines of rats low and high avoidance, which differ drastically in their level of emotionality, were chronically implanted in the nucleus accumbens with multifibre carbon electrodes sensitive to dopamine. Results show that during pressure experiments Roman Low-avoidance rats presented a greater increase in dopamine than Roman High –avoidance rats. These results are discussed in the light of recent experiments in rats exposed to stressful situations or pressure environment. It is concluded that the increase in dopamine release induced by high pressure is not connected to the emotional reaction caused by the introduction of the animals into an unfamiliar environment, as the dopaminergic responses are not those classically observed in stressful situations and therefore could rather reflect the effect of pressure in neurochemical processes.

Özet

Dalgıçlar ve deney hayvanları yüksek basınca maruz kaldıklarında beyin hasarı ve biyo-davranışsal bozukluklar geliştirirler. Basınç etkisi ile striatal dopamin salınımının arttığı saptanmıştır. Bu çalışma gözlenen artışın basınçlı ortamın sebep olduğu stres kökenli bir biyokimyasal oluşum mu yoksa basıncın nörokimyasal işlem üzerine olan etkisi mi olduğunu araştırmayı amaçlamıştır. Genetik olarak seçilmiş ve duygusal açıdan büyük farklılık gösteren düşük ve yüksek sakınımlı iki tür sıçanın nucleus accumbens’ine dopamine hassas multifiber karbon elektrodlar yerleştirilmiştir. Sonuçlar, basınç deneylerinde Roman düşük sakınım sıçanlarının Roman yüksek sakınım’lılara oranla daha yüksek dopamin artışı sağladığını göstermiştir. Bu sonuçlar son dönemlerde sıçanların stres koşullarına veya basınç ortamlarına maruz bırakılarak yapılan deneylerin ışığında tartışılmıştır. Stress koşullarında gözlenen klasik yanıt dopaminerjik yanıt değildir. Bu nedenle yüksek basınç uygulamasında gözlenen dopamin salgısındaki artışın hayvanın yabancı bir ortamla karşılaşması ile oluşan duygusal tepkiye bağlı olmadığına kanaat getirilmiştir. Gözlenen artış basıncın nörokimyasal oluşumlar üzerine olan etkisinden kaynaklanıyor olabilir.

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Cite This Article

Slimani, M., EL-ANTRI, S., ROSTAIN, J., SENDID, K., FECHTALI, T. (2022). Basıncın seçilmiş iki sıçan türünde dopamine salgılanması üzerine etkisi: Voltametrik in vivo çalışma. Türk Biyokimya Dergisi, Cilt: 32 - Sayı: 4, 148–153. https://ajindex.com/articles/621369

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