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Elastic tissue changes in skin following PUVA therapy.
Journal of the American Academy of Dermatology
|August 1, 1980
Summary
Psoralen plus ultraviolet A (PUVA) therapy for psoriasis causes significant damage to skin's elastic tissue. These ultrastructural changes, including elastin loss and fiber fragmentation, persist long after treatment cessation.
Area of Science:
- Dermatology
- Biomedical Engineering
- Tissue Ultrastructure
Background:
- Psoriasis is a chronic inflammatory skin condition.
- Psoralen plus ultraviolet A (PUVA) is a common treatment for moderate to severe psoriasis.
- The effects of PUVA on skin's elastic tissue are not fully understood.
Purpose of the Study:
- To investigate the ultrastructural changes in dermal elastic tissue induced by PUVA therapy.
- To determine the persistence of these changes after treatment discontinuation.
Main Methods:
- Skin biopsies were obtained from psoriasis patients undergoing PUVA treatment.
- Transmission electron microscopy was used to examine the ultrastructure of elastic fibers.
- Histological analysis was performed on tissue samples collected at various time points.
Main Results:
- Early PUVA treatment led to a noticeable loss of elastin within the elastic fibers.
- Subsequent alterations included the breakdown of microfibrils and fragmentation of the elastic fiber.
- Significant ultrastructural damage to elastic fibers was still evident 15 months after PUVA treatment was stopped.
Conclusions:
- PUVA therapy induces profound and lasting ultrastructural damage to the elastic tissue in psoriatic skin.
- The observed changes suggest potential long-term implications for skin structure and integrity following PUVA treatment.
- Further research is warranted to explore the functional consequences of these persistent ultrastructural alterations.