Journals / Turkish Neurosurgery / 2009 / Cilt: 19 - Sayı: 3

Yüksek doz kotinin civciv embriyo modelinde nöral tüp defektlerine neden olabilir

High dose cotinine may induce neural tube defects in a chick embryo model

Pages
224–229
DOI
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AI Summary & Key Takeaways

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

Cigarette smoking may induce hazardous effects on neural tube development.

📌 3 Key Takeaways

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Objective & Hypothesis:AIM: Nicotine is a well-known agent among 4000 chemicals in cigarettes.
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Key Findings & Data:About 70 to 80% of nicotine is converted to cotinine, a major metabolite.
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Conclusion & Impact:Cigarette smoking may induce hazardous effects on neural tube development.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

AIM: Nicotine is a well-known agent among 4000 chemicals in cigarettes. About 70 to 80% of nicotine is converted to cotinine, a major metabolite. The aim of the present study is to investigate the effect of cotinine on neural tube development in a chick embryo model. MATERIAL and METHODS: Sixty fertile, specific pathogen free eggs were divided into 6 groups for this study. In the first group, a fixed cotinine concentration for each egg was calculated just to simulate the concentration of a smoker's blood level. A second experimental group was designed at a higher cotinine concentration. Embryos that succeeded to reach Hamburger-Hamilton stage 12 from each group were then embedded into paraffin for permanent sections. These two groups were compared with eggs subjected to vehicle (standard alcohol and ten times more alcohol concentration) and control groups (saline and sham groups). RESULTS: Embryos of the cotinine (regular dose), vehicle and control groups were normal, but embryos subjected to higher cotinine concentrations were malformed at the cranial part of the thoracic neural tube. CONCLUSION: Association of cotinine with neural tube defects was demonstrated in the present study. Cigarette smoking may induce hazardous effects on neural tube development.

Özet

AMAÇ: Nikotin, sigaranın içerdiği 4000 kimyasal maddeden iyi bilinenlerden biridir. Ortalama %70-80 düzeyinde major metaboliti olan kotinine yıkılır. Bu çalışmada, kotininin nöral tüp gelişimine olan etkisini civciv embriyo modelinde araştırılması amaçlanmıştır. YÖNTEM ve GEREÇ: Çalışma için spesifik patojen içermeyen 60 adet döllenmiş yumurta 6 gruba ayrıldı. Birinci gruba, bir sigara içicisinde bulunan ortalama kotinin konsantrasyonuna eşdeğer kotinin verildi. İkinci gruba bunun 10 katı yükseklikte kotinin dozu verildi. Embriyolar Hamburger-Hamilton evrelendirmesine göre 12. evreye ulaşınca çıkarılarak parafin kesitleri alındı. Bu gruplardan elde olunan örnekler ilaç taşıyıcısı olan etil alkol grupları, kontrol grubu ve normal embriyo grubu ile karşılaştırıldı. BULGULAR: Normal doz kotinin verilen grup, etil alkol grupları, serum fizyolojik ve normal kuluçka gruplarında embriyolar normal gelişim gösterirken, yüksek doz kotinin verilen grupta torakal omurganın kranial kesiminde nöral tüpün açık olduğu gözlendi. SONUÇ: Bu çalışmada, kotininin nöral tüp defektleri ile ilişkili olduğu gösterilmiştir. Sigara nöral tüp defektlerine neden olabilecek zararlı etkilere yol açabilir.

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Cite This Article

DALGIÇ, A., ARMAĞAN, E., HELVACIOĞLU, F., OKAY, Ö., DAĞLIOĞLU, E., KAPLANOĞLU, G. T., ÜNLÜ, A., BELEN, D. (2009). Yüksek doz kotinin civciv embriyo modelinde nöral tüp defektlerine neden olabilir. Turkish Neurosurgery, Cilt: 19 - Sayı: 3, 224–229. https://ajindex.com/articles/405160

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References (1)

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