Epidermal Langerhans cells in Actinic Prurigo: a comparison between lesional and non-lesional skin.

Academic Article


  • BACKGROUND: Actinic Prurigo (AP) is a chronic pruritic dermatosis of unknown cause affecting sun exposed skin in defined ethnic groups with characteristic MHC alleles. However, the cutaneous dendritic cells have not been assessed. OBJECTIVE: To assess in situ the epidermal Langerhans Cell (LC) status in Actinic Prurigo. STUDY DESIGN: Fresh skin samples from three AP patients were used to evaluate in situ the epidermal LC, comparing lesional and non-lesional sites in each subject. SETTING: AP patients attending the Dermatology Department at the Hospital M. Gea-Gonzalez in Mexico city. METHODS: Lesional and non-lesional skin samples were taken from each subject to prepare both epidermal sheets and conventional tissue sections. Three markers restricted to LC in epidermis (CD1a, ATPase, MHC-II) were used to quantify the LC per area in epidermal sheets. RESULTS: Compared to non-lesional skin from the same subject, a significant reduction in the number of LC per area of epidermis was found in lesional skin; with any of the three markers evaluated. CONCLUSION: The frequency of epidermal LC decreases importantly in lesional skin from AP patients.
  • Keywords

  • Epidermis, Humans, Langerhans Cells, Photosensitivity Disorders, Prurigo
  • Digital Object Identifier (doi)

    Author List

  • Calderón-Amador J; Flores-Langarica A; Silva-Sánchez A; Donis-Maturano L; Granados J; Vega-Memije E; Lacy-Niebla RM; Hojyo-Tomoka T; Dominguez-Soto L; Flores-Romo L
  • Start Page

  • 438
  • End Page

  • 440
  • Volume

  • 23
  • Issue

  • 4