2003
DOI: 10.1016/j.jdermsci.2003.08.005
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Photosensitivity in cutaneous lupus erythematosus: lessons from mice and men

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Cited by 29 publications
(18 citation statements)
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“…With respect to the mechanism of the photosensitivity in LE, the UVBmediated translocation of Ro/SS-A antigen to the surface of keratinocytes, rather than its cytotoxic effect, is believed to be responsible. Our group previously reported that the quantitative levels of Ro/SS-A antigen translocation in cultured primary keratinocytes irradiated with UVB were higher in patients with SLE and subacute CLE than in those with discoid LE and in healthy controls [21,22]. However, the significance of the translocation of keratinocyte Ro/SS-A antigen on the photosensitivity of LET cases has not been well investigated, although LET patients do show a highly positive reaction to the photo-provocation test.…”
Section: Discussionmentioning
confidence: 99%
“…With respect to the mechanism of the photosensitivity in LE, the UVBmediated translocation of Ro/SS-A antigen to the surface of keratinocytes, rather than its cytotoxic effect, is believed to be responsible. Our group previously reported that the quantitative levels of Ro/SS-A antigen translocation in cultured primary keratinocytes irradiated with UVB were higher in patients with SLE and subacute CLE than in those with discoid LE and in healthy controls [21,22]. However, the significance of the translocation of keratinocyte Ro/SS-A antigen on the photosensitivity of LET cases has not been well investigated, although LET patients do show a highly positive reaction to the photo-provocation test.…”
Section: Discussionmentioning
confidence: 99%
“…A literatura, aliás, é bastante controversa nesse aspecto. [7][8][9] Existem vários mecanismos pelos quais a radiação ultravioleta induz apoptose em queratinócitos: via formação de radicais de oxigênio livre, por apoptose mediada por receptores ou, ainda, mediante dano direto ao DNA. Prejuízo na depuração dessas células apoptóticas é encontrado em pacientes com lúpus, e isso serve como estímulo inflamatório contínuo.…”
Section: Discussionunclassified
“…Essa associação, entretanto, não está bem estabelecida, uma vez que nem todos os autores puderam confirmá-la. [7][8][9] As lesões inespecíficas, por sua vez, como a alopecia e a urticária-vasculite, são aquelas que prenunciam a atividade clínica da doença sistêmica. 3 A presença de urticária-vasculite associada à diminuição de níveis séricos de C1q sugere predisposição ao aparecimento de lesões renais.…”
Section: Introductionunclassified
“…In general, autoimmunity is an immune system defect of lymphocytes in adaptive immune responses directed at self antigens and can lead to autoimmune diseases that are characterized by autoantibodies and tissue damages [1,2]. Although autoantibodies corresponding to various nucleus components are representative of systemic autoimmune diseases or collagen diseases, the functions are still mysterious.…”
Section: Dysregulation Of Self-defense Underlying Autoimmunity or Autmentioning
confidence: 99%