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Related Concept Videos

Clinical Applications of Epidermal Stem Cells01:19

Clinical Applications of Epidermal Stem Cells

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 EpiSCs...

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Murine Excisional Wound Healing Model and Histological Morphometric Wound Analysis
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Plant Exosome Injection with or without Low Level Laser Therapy Promotes Skin Wound Healing: An Experimental Study.

Noury Adel1, Jack Kolenda2, Jesper Thulesen3

  • 1Oral and Maxillofacial Surgery Specialist, Private Practice, Cairo, Egypt.

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Summary

Plant-derived extracellular vesicles (EVs) promote skin wound healing. Combining EVs with low-level laser therapy (LLLT) significantly enhances dermal regeneration and blood vessel formation in laser-induced wounds.

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Area of Science:

  • Regenerative Medicine
  • Dermatology
  • Biotechnology

Background:

  • Extracellular vesicles (EVs) derived from plants and low-level laser therapy (LLLT) individually demonstrate regenerative capabilities in wound healing.
  • Their synergistic application may accelerate dermal repair after laser-induced skin injury.
  • This study investigated three commercial plant-derived EV formulations (Exoline, Glow, Elysee) for efficacy, alone and with LLLT, in a rabbit ear wound model.

Purpose of the Study:

  • To compare the efficacy of three plant-derived extracellular vesicle formulations in enhancing cutaneous wound healing.
  • To evaluate the combined effects of these extracellular vesicle preparations and low-level laser therapy (LLLT) on laser-induced skin injuries.
  • To assess collagen deposition and angiogenesis as key indicators of dermal regeneration.

Main Methods:

  • Adult male New Zealand White rabbits were used, with laser-induced thermal skin defects created on the ear surface.
  • Eight groups were established: control, EV monotherapies, combination therapies with LLLT, and LLLT alone.
  • EVs were injected locally post-injury, and LLLT was applied weekly. Collagen and CD31 (angiogenesis) were quantified at days 7 and 14.

Main Results:

  • All extracellular vesicle (EV) treatment groups exhibited significantly increased collagen deposition and microvascular density compared to controls.
  • Combination therapy involving EVs and LLLT demonstrated enhanced early regenerative responses compared to EV monotherapy.
  • Observed differences between EV products suggest potential impacts of formulation characteristics on therapeutic outcomes.

Conclusions:

  • Plant-derived extracellular vesicle injections significantly enhance early dermal regeneration in laser-induced skin wounds.
  • The combination of plant-derived EVs with LLLT shows particular promise for accelerating wound repair.
  • Further research is warranted to explore the long-term effects and to elucidate the specific formulation characteristics influencing therapeutic outcomes.