Journals / Turkish Neurosurgery / 2013 / Cilt: 23 - Sayı: 1

Polietilen glikol hidrojel dural bariyer nörotoksisitesinin değerlendirilmesi

Evaluation of the neurotoxicity of the polyethylene glycol hydrogel dural sealant

Pages
16–24
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

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

ConclusIon: Although this study did not present the detailed histopathological and biochemical evaluation results, it indicated that the application of the PEG-based hydrogel sealant was not associated with neurotoxicity, delayed healing, or degenerative changes.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:AIM: Although polyethylene glycol (PEG) is a neutral, biocompatible hydrophilic polymer recognized for its lack of interaction with biological barrier, its neurotoxicity has not been clearly identified in neurosurgery.
📊
Key Findings & Data:Then brain tissues were harvested for histopathological and biochemical studies at 72 hours to investigate the acute stage changes and on 15th day to evaluate the chronic stage changes.
💡
Conclusion & Impact:ConclusIon: Although this study did not present the detailed histopathological and biochemical evaluation results, it indicated that the application of the PEG-based hydrogel sealant was not associated with neurotoxicity, delayed healing, or degenerative changes.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

AIM: Although polyethylene glycol (PEG) is a neutral, biocompatible hydrophilic polymer recognized for its lack of interaction with biological barrier, its neurotoxicity has not been clearly identified in neurosurgery. This study is constructed to evaluate the possible neurotoxicity of a PEG hydrogel dural sealant. MaterIal and Methods: After a burrhole was opened in the left parietal bone of the twenty five Wistar albino rats, the dura mater and cerebral cortex were incised and the experimental material (activated polyethylene glycol and polyethylene imine) was sprayed into the burrhole. Then brain tissues were harvested for histopathological and biochemical studies at 72 hours to investigate the acute stage changes and on 15th day to evaluate the chronic stage changes. Results: There were statistically significant differences among the groups regarding the comparison of the values of the PMNL cell infiltration grades, gliosis and congestion in both acute and chronic stages. However, the values of the MNL cell infiltration grades, edema and fibrin formation, lipid peroxidation levels of harvested brain tissues were similar in all groups. ConclusIon: Although this study did not present the detailed histopathological and biochemical evaluation results, it indicated that the application of the PEG-based hydrogel sealant was not associated with neurotoxicity, delayed healing, or degenerative changes.

Özet

AMAÇ: Polietilen glikol (PEG) nötral ve vücut dokuları ile uyumlu hidrofilik karakterde bir polimer olmasına ve biyolojik bariyer olarak klinikte birçok alanda kullanılmasına rağmen nöroşirürji alanında dural bariyer olarak henüz yeni kullanılmaya başlanmış olup nörotoksik etkileri hakkında yeterli veri bulunmamaktadır. Bu çalışma, bu etkilerin bir kısmını gösterebilmek amacıyla planlanmıştır. YÖNTEM ve GEREÇLER: Yirmi beş adet Wistar albino ratın sol parietal kemiğinde delik (burrhole) açılıp dura ve pia materleri geçilerek serebral kortekslerinde zedelenme oluşturuldu ve bazı hayvanların serebral korteksleri üzerine deneysel materyal (aktive olmuş polietilen glikol ve polietilen imine) sıkıldı. Takiben 72 saat sonunda akut dönem etkileri ve 15 gün sonunda kronik dönem etkileri incelemek amacıyla deneklerin beyin dokuları çıkarıldı ve histopatolojik ve biyokimyasal incelemeye tabi tutuldu. BULGULAR: Deney grupları arasında polimorfonükleer hücre infiltrasyonu düzeyleri, gliozis ve konjesyon açısından akut ve kronik dönemler arasında istatistiksel olarak belirgin fark saptandı. Ancak mononükleer hücre infiltrasyon düzeyleri, ödem, fibrin formasyonu ve beyin lipid peroksidasyon düzeyleri açısından gruplar arasında belirgin istatistiksel farklılık bulunmadı. SONUÇ: Her ne kadar bu çalışma ayrıntılı ve ileri düzey histopatolojik ve biyokimyasal inceleme sonuçlarını içermiyor olsa da, çalışma sonunda PEG kökenli hidrojel dural bariyerin nörotoksik etkilerinin olmadığı, iyileşme süresini etkilemediği ve dejeneratif değişikliklere yol açmadığı sonucuna varılmıştır.

🔖

Cite This Article

BAKAR, B., KÖSE, E. A., BALCI, M., ATASOY, P., SARKARATI, B., ALHAN, A., KILINÇ, K., KESKIL, I. S. (2013). Polietilen glikol hidrojel dural bariyer nörotoksisitesinin değerlendirilmesi. Turkish Neurosurgery, Cilt: 23 - Sayı: 1, 16–24. https://ajindex.com/articles/404911

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (1)

  1. Bjugstad KB, Lampe K, Kern DS, Mahoney M: Biocompatibility of poly(ethylene glycol)-based hydrogels in the brain: An analysis of the glial response across space and time. J Biomed Mater Res A 95: 79-91, 2010 2. Boogaarts JD, Grotenhuis JA, Bartels RH, Beems T: Use of a novel absorbable hydrogel for augmentation of dural repair: Results of a preliminary clinical study. Neurosurgery 57(1 Suppl): 146-151, 2005 3. Cosgrove GR, Delashaw JB, Grotenhuis JA, Tew JM, Van Loveren H, Spetzler RF, Payner T, Rosseau G, Shaffrey ME, Hopkins LN, Byrne R, Norbash A: Safety and efficacy of a novel polyethylene glycol hydrogel sealant for watertight dural repair. J Neurosurg 106: 52-58, 2007 4. Nie NH, Hull CH, Jenkins JG: SPSS: Statistical Package for Social Science. New York: Mc Graw Hill Inc, 1975 5. Ohkawa H, Ohishi N, Yagi K: Assay for lipid peroxides in animal tissues by thiobarbituric acid reaction. Anal Biochem 95: 351–58, 1979 6. Preul MC, Bichard WD, Spetzler RF: Toward optimal tissue sealants for neurosurgery: Use of a novel hydrogel sealant in a canine durotomy repair model. Neurosurgery 53: 1189-1199, 2003 7. Preul MC, Campbell PK, Bichard WD, Spetzler RF: Application of a hydrogel sealant improves watertight closures of duraplasty onlay grafts in a canine craniotomy model. J Neurosurg 107: 642-650, 2007 8. Preul MC, Campbell PK, Garlick DS, Spetzler RF: Application of a new hydrogel dural sealant that reduces epidural adhesion formation: Evaluation in a large animal laminectomy model. J Neurosurg Spine 12: 381-390, 2010 9. Than KD, Baird CJ, Olivi A: Polyethylene glycol hydrogel dural sealant may reduce incisional cerebrospinal fluid leak after posterior fossa surgery. Neurosurgery 63(1 Suppl 1): ONS182-187, 2008 10. Wechsler S, Fehr D, Molenberg A, Raeber G, Schense JC, Weber FE: A novel, tissue occlusive poly(ethylene glycol) hydrogel material. J Biomed Mater Res A 85: 285-292, 2008 11. Weinstein JS, Liu KC, Delashaw JB Jr, Burchiel KJ, van Loveren HR, Vale FL, Agazzi S, Greenberg MS, Smith DA, Tew J Jr: The safety and effectiveness of a dural sealant system for use with nonautologous duraplasty materials. J Neurosurg 112: 428-433, 2010