Journals / Journal of Neurological Sciences (Turkish) / 2009 / Cilt: 26 - Sayı: 2

Manyetik alana maruz kalan şıçan beyinlerinin proliferatif aktivitesinin agnor ile değerlendirilmesi

Assessment of proliferative activity in rat brain with agNOR following exposure to magnetic field

Pages
198–205
Publication Date
2022-10-19
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Groups A and B differed significantly from the sham and control groups in terms of mean number of AgNORs (p≤0.001).

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: Nucleolar organizer region (NORs) is directly related to cell cycle and is an indicator of cell proliferation.
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Key Findings & Data:We explored, in the present study, whether there was a difference in proliferation between brain tissues subjected to magnetic field for different durations.Study Design: The study comprised 5 groups with six rats each.
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Conclusion & Impact:Groups A and B differed significantly from the sham and control groups in terms of mean number of AgNORs (p≤0.001).
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: Nucleolar organizer region (NORs) is directly related to cell cycle and is an indicator of cell proliferation. We explored, in the present study, whether there was a difference in proliferation between brain tissues subjected to magnetic field for different durations.Study Design: The study comprised 5 groups with six rats each. Groups A and B were exposed to magnetic fields for 2.5 hours/day and 2.5 minutes/day, respectively, everyday for three months. Sham groups for Group A (SA) and Group B (SB) were constructed and switched-off cellular phones were left in the same environment for the same duration as their corresponding experimental groups. Rat's brains were removed, placed in 10% formalin and 3 micron thick sections were obtained following routine histological methods. Sections were stained with AgNOR stain. The number of AgNORs for each 100 cortical neurons, hippocampal neurons, ependymal and choroid plexus cells were counted on every section with an immersion microscope objective.Results: Statistical analyses revealed that mean number of AgNORs was highest in Group A (3.69±0.54), followed by Group B (3.06±0.48). Even though there was no statistically significant difference between sham groups (SA=1.76±0.56 and SB=1.84±0.65, p=0.990), mean number of AgNORs in sham groups was significantly higher than the control group (1.29±0.42) (p≤0.05). Groups A and B differed significantly from the sham and control groups in terms of mean number of AgNORs (p≤0.001).

Özet

Amaç: Nükleolar organizer region (NORs) doğrudan hücre siklusu ile ilişkilidir ve hücre proliferasyonunu yansıtır. Çalışmamızda, farklı sürelerde manyetik alana maruz kalan beyin dokularının proliferasyonları arasında fark olup olmadığını araştırdık.Materyal ve Metod: Çalışmamız, her birinde 6 sıçan bulunan 5 gruptan oluşmuştur. Deney grupları üç ay süreyle, haftada yedi gün, her gün, A grubu: 2,5 saat, B grubu: 2,5 dakika manyetik alana maruz bırakıldı. A ve B gruplarıyla aynı sürelerde ortamda kapalı olarak cep telefonu bulundurulan sham grupları (SA ve SB) oluşturuldu. Ortamda cep telefonu bulundurulmayan grup kontrol grubu olarak değerlendirildi. Sıçanların beyinleri anestezi etkisi altında çıkarılarak %10'luk formaldehite konuldu ve doku takibi yapılarak 3 mikronluk kesitler alındı. Kesitler AgNOR boyası ile boyandı. Her kesitte 100'er adet korteks ve hipokampus bölgesi nöronları, ependim ve koroid pleksusa ait hücrelerin AgNOR tanecikleri immersiyon objektifte sayıldı.Bulgular: İstatistiksel olarak değerlendirildiğinde ortalama tanecik sayısı en fazla grup A'ya aitti (3.69±0.54). B grubu (3.06±0.48) ikinci sırada yer almaktaydı. Sham grupları kendi arasında (SA=1.76±0.56 ve SB=1.84±0.65) istatistiksel olarak anlamlılık olmamakla birlikte (p=0.990) ortalama tanecik sayısı bakımından kontrol grubundan (1.29±0.42) daha fazla sayıda taneciğe sahiplerdi ve istatistiksel olarak anlamlıydı (p≤0.05). Ortalama tanecik sayısı bakımından A ve B grupları sham ve kontrol gruplarıyla karşılaştırıldığında istatistiksel olarak ileri düzeyde anlamlı bulundu (p≤0.001).Sonuç: Manyetik alana maruz kalmaya bağlı olarak beyin dokusundaki nöronal ve glial hücrelerde, proliferatif aktivite artışını AgNOR tanecikleri göstermiştir.

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Cite This Article

ERKEN, H. A., YALÇIN, N., ERKEN, G., GENÇ, O., SORKUN, H. Ç. (2022). Manyetik alana maruz kalan şıçan beyinlerinin proliferatif aktivitesinin agnor ile değerlendirilmesi. Journal of Neurological Sciences (Turkish), Cilt: 26 - Sayı: 2, 198–205. https://ajindex.com/articles/565516

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