Experience in Using Fetal Membranes: The Present and New Perspectives

Area of Science:

• Regenerative Medicine
• Tissue Engineering
• Transplantation Immunology

Background:

• The placenta is an accessible source of transplantable tissues.
• Placental tissues, including the amniotic membrane, possess inherent properties beneficial for wound healing.
• Existing literature supports the use of placental grafts in therapeutic applications.

Purpose of the Study:

• To evaluate the clinical efficacy of fetal membranes, specifically human amnion, in wound treatment based on burn center experience.
• To describe the clinical application of various placental transplant types.
• To present preliminary findings on using transgenic pig placenta for tissue transplantation.

Main Methods:

• Clinical utilization of human amnion grafts prepared from placental tissues.
• Preparation and application of amniotic grafts from both human and transgenic pig placentas.
• Data collection on patient outcomes and graft quantities.

Main Results:

• Over 250,000 cm² of human amnion transplants were prepared and used in 528 patients, including those with Lyell syndrome.
• Initial studies yielded 27,426 cm² of amniotic grafts from 5 transgenic pigs.
• Transgenic animal placentas provided a significantly larger yield of grafts compared to human sources.

Conclusions:

• Human amnion transplants are highly effective for wound treatment, establishing a new standard for toxic epidermal necrolysis (Lyell's syndrome).
• Placental tissue transplantation, especially using amniotic membrane, demonstrates extraordinary efficiency.
• Transgenic pig placentas represent a valuable and abundant alternative source for amniotic grafts in transplantation.