AI Article Synopsis
- The study aimed to find the best time to use embryonic pig skin precursor tissue for transplanting into wounds and to evaluate its effectiveness in healing.* -
- Various skin precursor tissues from pig fetuses of different ages were tested by transplanting them onto wounds in mice and assessing their growth and structure.* -
- Results showed that skin precursor tissue from 42-day-old fetuses had the best healing outcomes, while tissue from 56-day-olds could effectively repair wounds without forming tumors.*
Article Abstract
Objective: To select the optimal pregnancy time window of embryonic pig skin precursor tissue for xenotransplantation and study its ability in wound repair.
Methods: Skin precursor tissues were obtained from pig fetus of fetal age of 35, 42, 56, 70 days, and were minced into microskin and transplanted to dorsal wounds of BALB/c nude mice, then they were covered with residual skin after plastic surgery of patients or adult pig skin (white). The characteristics of growth and development were observed after transplantation. Pathological examination was performed on 6 and 12 post operation weeks respectively to observe the tissue structure and tumorigenicity.
Results: Skin precursor tissues from fetal pig survived and developed after transplantation, and the microskin fused. New tissue area from skin precursor tissues with fetal age of 42 days was (47 +/- 6) mm2, which was higher than that of 35 days (18 +/- 8 mm2), 56 days (31 +/- 12 mm2), 70 days (20 +/- 8 mm2, P < 0.05). The skin precursor developed into "intact skin" with hair, sebaceous glands and sweat glands, and melanocytes were also detected in epidermis. The newly-grown skin tissue included epidermal and dermal layer, and obvious dermal papillae. Teratoma was not found after transplantation in skin precursor tissue with fetal age of 56, 70 days.
Conclusion: Fetal pig skin precursor tissue with fetal age of 56 days can be used to repair wound as xenotransplantation.
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