การศึกษาปฏิกิริยาเฉพาะที่หลังการฝัง Pore skin® ในกล้ามเนื้อของสัตว์ทดลองตามมาตรฐาน ISO 10993-6 และการตอบสนองของระบบภูมิคุ้มกันในการทดสอบความเข้ากันได้ทางชีวภาพตามมาตรฐาน ASTM:F 1906-98
The study of local effect of pore skin® in animal muscle implant model according to ISO 10993-6 and immune responses in biocompatibility testing according to ASTM:F 1906-98
Abstract:
This study aimed to evaluate in vivo biocompatibility of Pore Skin®, the artificial skin made from allogeneic dermis, in Wistar rats using muscle implantation model followed the ISO 10993-6: Biological evaluations of medical devices. Pore Skin® was implanted in gluteal muscle of 8-week-old female Wistar rats (n = 24) and using Gel foam ® (a commercial medical product) as a control (n = 24). After implanted 2 and 4 weeks, the animals were sacrificed and then evaluated macroscopic-histology at the implant sites and systemic immune responses. The histological evaluation of the surrounding tissue were assessed for necrosis, neovascularisation, fibrosis, fatty infiltrate and inflammatory cell types such as polymorphonuclear cells (PMN), lymphocytes, plasma cells, macrophage, and giant cells. Irritation scoring from histological results (H&E) of the Pore Skin®- Gel foam® at 2 and 4 weeks were 1.79 and 2.22 respectively, implied that Pore Skin® was non-irritanting at 2 and 4 weeks after implantation in Wistar rats (ISO 10993-6 non-irritant score is 0.0-2.9). The systemic immune response was also tested according to the ASTM: F 1906-98. Concentration of Interleukin-1β (IL-1β), a pro-inflammatory cytokine, was quantified from animal blood using enzyme-linked immunosorbent assay (ELISA). At 2 and 4 weeks, the levels of IL-1β in Pore Skin® (351±24.00 pg/ml, 328±2.00 pg/ml) and Gel foam® (340±6.56 pg/ml, 332±12.77pg/ml) after implantation were not significantly different (p<0.05). The results confirmed that local tissue reaction and systemic immune response of Pore Skin® were comparable to those of a commercial medical product, Gel foam®. Therefore, it could be concluded from this study that Pore Skin® is tissue compatible