• Roni Mai, Egor Osidak, Ekaterina Mishina, Sergey Domogatsky, Andrey Andreev, Youssef Dergam, and Vladimir Popov.
• Department of Pediatric Surgery, Moscow Regional Scientific Research Clinical Institute M.F. Vladimirsky, Moscow, Russia; Department of Pediatric Neurosurgery, Russian Children's Clinical Hospital, Pirogov Russian National Research Medical University, Moscow, Russia. Electronic address: doctor.ronimai@gmail.com.
• World Neurosurg. 2024 Oct 1; 190: e1061e1070e1061-e1070.

Background And ObjectivesThe dura mater is a barrier between the brain and the surrounding environment. Injuries to the dura can lead to serious complications, therefore, ensuring a hermetic closure of the dura is a primary task for a neurosurgeon. The aim of the study is to compare the effectiveness of applying the newly developed ViscollDURA collagen membrane (VDCM), with the commercially available Durepair (xenogeneic collagen) in animal model.MethodsA dural tear model was utilized in rats with membrane implantation using an application method. The sample size consisted of 24 rats. Group I underwent VDCM implantation, while Group II underwent Durepair implantation. Results were evaluated at 30, 60, and 90 days. The study was assessed using magnetic resonance imaging, histology, electron scanning microscopy, and immunohistochemistry. The obtained results underwent statistical analysis.ResultsIn the clinical presentation, there were no difference between groups. Histologically, Group 1 showed comparable results to Group 2. The integration process of the membrane statistically differed between the groups. In Group 1, neovascularization and tissue replacement showed better results than in Group 2. Magnetic resonance imaging differences were observed at later stages, with group 2 showing adhesion and brain deformation in the implantation area.ConclusionsBoth membranes showed safety and compatibility. The collagen membrane produced under sterile conditions demonstrated better regeneration with minimal inflammatory reaction. The study suggests that VDCM exhibits biocompatibility comparable to Durepair, providing prospects for potential applications in neurosurgery.Copyright © 2024 Elsevier Inc. All rights reserved.

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