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Effect of PUVA on intestinal calcium absorption
K E Virvidakis1, J D Brokalakis, P N Singhellakis
1Second Medical Department, University of Athens, Greece.
The British Journal of Dermatology
|February 1, 1988
Summary
Photochemotherapy (PUVA) significantly increased intestinal calcium absorption in psoriasis patients. Ultraviolet A (UVA) light alone did not affect calcium absorption, suggesting PUVA
Area of Science:
- Dermatology
- Endocrinology
- Biochemistry
Background:
- Chronic psoriasis is a common skin condition.
- Photochemotherapy (PUVA) is a treatment for psoriasis.
- Previous studies noted increased 25-OH vitamin D levels after PUVA.
Purpose of the Study:
- To investigate the effect of PUVA on intestinal calcium absorption in psoriasis patients.
- To determine if Ultraviolet A (UVA) alone impacts calcium absorption.
Main Methods:
- Seven chronic psoriasis patients received 14 days of PUVA treatment.
- Seven additional psoriasis patients received UVA irradiation alone for a similar period.
- Intestinal calcium absorption was measured before and after treatment.
Main Results:
- Significant increase in intestinal calcium absorption observed in the PUVA-treated group.
- No significant changes in calcium absorption noted in the UVA-only group.
- Results correlate with previously reported increases in serum 25-OH vitamin D levels.
Conclusions:
- PUVA treatment positively impacts intestinal calcium absorption in psoriasis.
- The observed changes in calcium absorption may be linked to elevated 25-OH vitamin D levels.
- Findings highlight potential biological consequences of PUVA therapy beyond skin improvement.