Biodegradation, Angiogenesis, and Inflammatory Response of a Collagen-Chitosan-Polyvinyl Alcohol (PVA) Membrane: In Vivo Model of Guided Tissue Regeneration.
Study Goal
The researchers aimed to evaluate the biodegradation, angiogenesis, and inflammatory response of collagen-chitosan-polyvinyl alcohol (PVA) membranes compared to other membranes, specifically for potential use in guided tissue regeneration for periodontal disease.
Results Summary
The collagen-chitosan-PVA membrane showed slower biodegradation (remaining up to day 30), greater angiogenesis (statistically significant increase in blood vessel formation), and a reduced inflammatory response (statistically significant for neutrophils, monocytes, and lymphocytes) compared to pericardial and cross-linked pericardial membranes. No significant difference was observed for eosinophils and mast cells.
Population
Wistar rats (51 rats divided into three groups).
Effective Dosage
Not specified (membranes administered subcutaneously).
Duration
30 days (assessed at days 0, 7, 14, and 30).
Interactions
None mentioned.
| Intervention | Direction | Endpoint | Population | Dosage | Impact | Claim # |
|---|---|---|---|---|---|---|
collagen-chitosan-polyvinyl alcohol (PVA) membrane | decrease | membrane biodegradation rate | Wistar rats | up to day 30 | remained in the tissue up to day 30 | #1 |
pericardial membrane | decrease | membrane biodegradation rate | Wistar rats | by day 7 | completely degraded by day 7 | #2 |
cross-linked pericardial membrane | decrease | membrane biodegradation rate | Wistar rats | by day 7 | completely degraded by day 7 | #3 |
collagen-chitosan-polyvinyl alcohol (PVA) membrane | increase | number of new blood vessels formed | Wistar rats | statistically significant (p < 0.005) | greater than that in the pericardial membrane and cross-linked pericardial membrane | #4 |
collagen-chitosan-polyvinyl alcohol (PVA) membrane | decrease | number of inflammatory cells | Wistar rats | statistically significant (p < 0.005) | lower than that in the pericardial membrane and cross-linked pericardial membrane | #5 |
collagen-chitosan-polyvinyl alcohol (PVA) membrane | no change | inflammatory response for eosinophils and mast cells | Wistar rats | p > 0.05 | not statistically significant | #6 |
The aim of this study was to examine the biodegradation, angiogenesis, and inflammatory response in collagen-chitosan-polyvinyl alcohol (PVA) membranes.This study employed an experimental approach utilizing a randomized controlled trial design. Wistar rats were used as subjects, with 51 rats divided into three groups. Each group received a different treatment: application of the collagen-chitosan-PVA membrane, pericardial membrane, or cross-linked pericardial membrane, administered subcutaneously. On days 0, 7, 14, and 30, the rats were terminated, and the membranes and surrounding tissues were collected for analysis. A histological examination was performed to evaluate the membrane biodegradation rate, the number of blood vessels formed, and the inflammatory response.The data were analyzed using the Kruskal-Wallis and Mann-Whitney tests, with a p-value of < 0.05 considered statistically significant.The collagen-chitosan-PVA membrane remained in the tissue up to day 30, while the pericardial membrane and cross-linked pericardial membrane were completely degraded by day 7. The average number of new blood vessels formed in the collagen-chitosan-PVA membrane on days 7, 14, and 30 was greater than that in the pericardial membrane and cross-linked pericardial membrane, which was statistically significant (p < 0.005). The average number of inflammatory cells in the collagen-chitosan-PVA membrane on day 30 was lower than that in the pericardial membrane and cross-linked pericardial membrane, which was statistically significant (p < 0.005) for neutrophils, monocytes, and lymphocytes. However, the difference was not statistically significant (p > 0.05) for eosinophils and mast cells.Biodegradation, angiogenesis, and the inflammatory response in collagen-chitosan-PVA membranes showed better results compared with other membranes. Collagen-chitosan-PVA membranes exhibit potential for application in guided tissue regeneration treatment for periodontal disease.