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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Phototoxicity from furocoumarins (psoralens) of Heracleum laciniatum in a patient with vitiligo. Action spectrum studies on bergapten, pimpinellin, angelicin and sphondin.

Investigations on light reactions in a patient with vitiligo are presented. The minimal erythema dose (MED) in the UVB area was approximately 1/3 of that in persons of skin type II. The application of furocoumarins (psoralens) increased light tolerance by 1 MED at 300-310 nm. Action spectrum studies with furocoumarins from Heracleum laciniatum showed the following order of potency: bergapten, pimpinellin, angelicin and sphondin. The efficacy was highest at 325-350 nm, with maxima at 330-335 nm. Pimpinellin was recently found to be phototoxic, but an action spectrum of sphondin is reported for the first time.[1]

References

  1. Phototoxicity from furocoumarins (psoralens) of Heracleum laciniatum in a patient with vitiligo. Action spectrum studies on bergapten, pimpinellin, angelicin and sphondin. Kavli, G., Midelfart, K., Raa, J., Volden, G. Contact Derm. (1983) [Pubmed]
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