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Related Concept Videos

Clinical Applications of Epidermal Stem Cells01:19

Clinical Applications of Epidermal Stem Cells

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Epidermal stem cells (EpiSCs) are mainly located at the basal layer of the epidermis. These cells repair minor injuries of the skin and replace dead skin cells. However, EpiSCs’ cannot heal severe wounds such as major burns or those from diabetes or hereditary disorders. In such cases, culturing the epidermal stem cells from the patient is possible and has yielded successful treatment options, such as laboratory-grown skin grafts. These grafts are synthesized using a patient’s own...
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Author Spotlight: Insights into the Use of Apple-Derived Cellulose Scaffolds for Bone Tissue Engineering
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Bioresorbable scaffold as a dermal substitute.

Lenon Cardoso1, Marília Colturato Cleto2, Maria Lourdes Peris Barbo3

  • 1General Surgery Resident, Pontificia Universidade Catolica de Sao PauloBrazil.

International Journal of Burns and Trauma
|August 15, 2017
PubMed
Summary

A novel porous bioresorbable membrane (Poly (L-co-DL lactic acid)-co-trimethylene carbonate) acted as an effective dermal substitute. This biomaterial promoted enhanced skin regeneration and reduced scarring in rat models.

Keywords:
Cutaneous woundbioresorbable polymerdermal substitutegraftin vivo study

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Polymer Science

Background:

  • Bioresorbable polymers are biocompatible materials used in medical procedures.
  • They serve as alternatives for compromised tissue regeneration, guiding cell growth for repair.
  • Synthetic bioresorbable polymers can function as membranes supporting tissue repair.

Purpose of the Study:

  • To evaluate the efficacy of a porous bioresorbable membrane, Poly (L-co-DL lactic acid)-co-trimethylene carbonate (PL-co-DLA-co-TMC), as a dermal substitute.
  • To assess its performance when used in conjunction with a partial skin graft in a rat model.

Main Methods:

  • Surgical creation of 1.5x1.5 cm skin defects in 40 Wistar rats.
  • Control group: defects treated with partial skin graft only.
  • Treated group: defects treated with partial skin graft combined with the bioresorbable membrane.
  • Macroscopic and microscopic analysis at 7 and 60 days post-procedure.

Main Results:

  • The PL-co-DLA-co-TMC membrane demonstrated biocompatibility.
  • Enhanced dermal regeneration with reduced shrinkage compared to second intention healing.
  • Treated group exhibited thicker, wider dermis with skin appendages, indicating improved healing and graft integration.
  • The membrane provided biological protection to the wound site.

Conclusions:

  • The studied material functions as a biocompatible dermal substitute, minimizing dermal scarring.
  • The bioresorbable membrane supports improved skin regeneration and wound healing.
  • Further research is recommended to optimize surgical techniques for membrane application.