Journals / Turkish Neurosurgery / 2012 / Cilt: 22 - Sayı: 2

Sıçanlarda siyatik sinir hasarında düşük doz radyasyonun tedavideki etkileri

The effects of low-dose radiation in the treatment of sciatic nerve injury in rats

Pages
167–173
DOI
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AI Summary & Key Takeaways

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

ConclusIon: It was observed that low-dose radiotherapy may prevent intraneural scar formation and may improve electrophysiological recovery in sciatic nerve injury performed in rats.

📌 3 Key Takeaways

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Objective & Hypothesis:AIm: Peripheral nerve regeneration is often blocked by scar formation and misdirection of axon sprouts.
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Key Findings & Data:Left sciatic nerves were exposed and clipped by temporary aneurysm clip for 5 minutes in both groups.
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Conclusion & Impact:ConclusIon: It was observed that low-dose radiotherapy may prevent intraneural scar formation and may improve electrophysiological recovery in sciatic nerve injury performed in rats.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

AIm: Peripheral nerve regeneration is often blocked by scar formation and misdirection of axon sprouts. The aim of this study is to evaluate electrophysiological and histopathological effects of low-dose radiation therapy on the prevention of intraneural scar formation in peripheral nerve injury. MaterIal and Methods: In this experimental study, twenty rats were randomly divided into two groups. Left sciatic nerves were exposed and clipped by temporary aneurysm clip for 5 minutes in both groups. In all animals, electrophysiological recordings were performed between 22-24 hours after sciatic nerve injury. The control group was not given any treatment. In the experimental group, 700 cGy low-dose radiation was administered on the left sciatic nerves 24 hours after clipping. Six weeks after injury, electrophysiological recordings were performed in both groups and animals were sacrificed to evaluate the injured nerves histopathologically. Results: We observed that low-dose radiotherapy increased the amplitude and improved latency measurements in electrophysiological examinations. Histopathologically, more axonal degeneration and vacuolization was observed in the control group comparing with the experimental group. Endoneural space increased slightly more in the control group than the experimental group. ConclusIon: It was observed that low-dose radiotherapy may prevent intraneural scar formation and may improve electrophysiological recovery in sciatic nerve injury performed in rats.

Özet

AMAÇ: Periferik sinir iyileşmesi sıklıkla skar formasyonuyla ve akson filizlenmesinin yanlış yönlenmesi ile engellenir. Bu çalışmada amaç, periferik sinir hasarında intranöral skar oluşumunun önlenmesinde düşük doz radyoterapi (RT) uygulanmasının elektrofizyolojik ve histopatolojik etkilerinin değerlendirilmesidir. YÖNTEM ve GEREÇLER: Bu deneysel çalışmada, yirmi rat rastgele iki gruba ayrıldı. Sol siyatik sinirleri ortaya kondu ve geçici anevrizma klibi ile sol siyatik sinirleri 5 dakika kliplendi. Siyatik sinir hasarı oluşturulduktan sonra 22- 24 saat arasında elektrofizyolojik değerlendirilme yapıldı. Kontrol grubuna herhangi bir tedavi verilmedi. Deney grubunda, kliplemeden 24 saat sonra, sol siyatik sinire 700 cGy düşük doz RT uygulandı. 6 hafta sonra her iki gruba da elektrofizyolojik çalışma yapıldı ve tüm hayvanlar sakrifiye edilerek hasarlı sinirlere histopatolojik değerlendirilme yapıldı. BULGULAR: Düşük doz RT’nin elektrofizyolojik incelemede amplitüd değerlerini artırdığını ve latans değerlerini düzelttiğini gözlemledik. Deney grubu ile karşılaştırıldığında, kontrol grubunda histopatolojik olarak aksonal dejenerasyon ve vakuolizasyonun daha fazla olduğu gözlemlendi. Endonöral mesafede ise, RT uygulanmış gruba göre minimal bir artış olduğu saptandı. SONUÇ: Düşük doz RT’nin sıçanlarda oluşturulan siyatik sinir lezyonlarında, intranöral skar oluşumunu önleyebileceği ve elektrofizyolojik iyileşmeyi düzeltebileceği gözlendi.

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Cite This Article

GÖÇMEN, S., ŞİRİN, S., OYSUL, K., ULAŞ, Ü. H., ÖZTAŞ, E. (2012). Sıçanlarda siyatik sinir hasarında düşük doz radyasyonun tedavideki etkileri. Turkish Neurosurgery, Cilt: 22 - Sayı: 2, 167–173. https://ajindex.com/articles/417863

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