title: Skin concentration of 8-methoxypsoralen, 5-methoxypsoralen and 4,5,8-trimethylpsoralen in guinea pigs.
abstract: The skin concentrations of 8-methoxypsoralen (8-MOP), 5-methoxypsoralen (5-MOP) and 4,5,8-trimethylpsoralen (TMP) were studied in the albino guinea pig following oral administration and intraperitoneal injection. The skin concentration of phototoxic drugs after oral administration peaked at 1.5 h, and the concentration of 8-MOP was 3.5 times greater than that of 5-MOP. The skin concentration of TMP was not detected in our study (limit of sensitivity 5 ng/ml). The highest skin concentrations of 8-MOP and 5-MOP after intraperitoneal injection were achieved for both drugs at 0.5 h, with the level of 8-MOP approximately 1.3 times higher than that of 5-MOP. The level of TMP could not be measured even in the case of intraperitoneal injection.
authors: Department of Dermatology, Yonsei University College of Medicine, Seoul, Korea.
authors: Y K
authors: YK
authors: Park
authors: S K
authors: SK
authors: Hann
authors: S
authors: S
authors: Im
authors: S
authors: S
authors: Kim
mesh_terms: D000078223:5-Methoxypsoralen; D000284:Administration, Oral; D000818:Animals; D006168:Guinea Pigs; D007274:Injections, Intraperitoneal; D008730:Methoxsalen / Q000031:analogs & derivatives* / Q000378:metabolism*; D009994:Osmolar Concentration; D012867:Skin / Q000378:metabolism*; D013997:Time Factors; D014307:Trioxsalen / Q000378:metabolism*
chemical_list: D000078223:5-Methoxypsoralen; D008730:Methoxsalen; D014307:Trioxsalen