Comparison of the Concentrations of 8-MOP in both Plasma and Suction Blister Fluid after Oral Ingestion
Annals of Dermatology
;
: 218-224, 1999.
Article
in English
| WPRIM
| ID: wpr-206655
ABSTRACT
BACKGROUND:
The value of plasma concentration of 8-Methoxypsoralen(8-MOP) in the supervision of photochemotherapy has been recognized. However, plasma levels of 8-MOP were not proportionate to the degree of PUVA induced erythema and couldn't alone predict the degree of PUVA induced erythemal reaction. We made a speculation that the degree of PUVA induced erythema might correlate better with skin tissue levels of 8-MOP than plasma levels. Suction blister fluid(SBF) has been known to represent tissue fluid in the skin. So we per-formed a study of comparison of 8-MOP concentrations in both plasma and SBF.OBJECTIVE:
Our purpose was to evaluate the correlation of the concentrations of 8-MOP in plasma and SBF 2 hours after oral administration of 0.6 mg/kg of 8-MOP.METHODS:
Twenty six patients, aged between 16 and 50 years, undergoing suction blister surgery for vitiligo treatment, participated in this open study. Single oral doses of 0.6 mg/kg of body weight of 8-MOP were taken. Blood samples(5ml) and SBF(2ml) were collected at 2 hours after the drug administration, and 8-MOP concentration in plasma and SBF were quantitated by reverse phase high-performance liquid chromatography (HPLC).RESULTS:
8-MOP concentrations in plasma and SBF ranged from 18 to 545 ng/ml and 8 to 179 ng/ml, respectively. On the analysis of linear regression, a close-relation could not be observed between two SBF levels; measured and predicted values which were calculated from measured plasma and SBF concentrations (r²=0.583, P < 0.001).CONCLUSION:
The correlation of plasma and SBF concentrations of 8-MOP is weak. So, SBF levels of psoralen are recommended for the study of PUVA erythemal reactions.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Organization and Administration
/
Photochemotherapy
/
Plasma
/
Skin
/
Suction
/
Vitiligo
/
Body Weight
/
Linear Models
/
Administration, Oral
/
Chromatography, High Pressure Liquid
Type of study:
Prognostic study
Limits:
Humans
Language:
English
Journal:
Annals of Dermatology
Year:
1999
Type:
Article
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