Showing results 101 to 106 of 106
  Le système immunitaire cutané et le photovieillissementNikkels, Arjen  ; Tassoudji, Nazli ; Arrese Estrada, Jorge et alin Revue Médicale de Liège (1991), 46(3), 158-163 La connaissance du système immunitaire cutané a beaucoup progressé durant les dernières années. Considérée auparavant comme un organe passif de protection, on sait aujourd'hui que la peau est un organe ... [more ▼] La connaissance du système immunitaire cutané a beaucoup progressé durant les dernières années. Considérée auparavant comme un organe passif de protection, on sait aujourd'hui que la peau est un organe immunocompétent. Le vieillissement cutané et l'exposition à la lumière ultraviolette ont une influence importante sur le système immunitaire cutané. Après une brève actualisation et description des cellules immunocompétentes de l'épiderme et du derme, nous considérerons la modulation du système immunitaire cutané liée au photovieillissement. [less ▲] Detailed reference viewed: 28 (2 ULg) Comparative Morphometric Study of Eruptive Puva-Induced and Chronic Sun-Induced Lentigines of the SkinNikkels, Arjen ; ; Pierard-Franchimont, Claudine et alin Analytical and Quantitative Cytology and Histology (1991), 13(1), 23-26 Computerized image analysis was used to compare lentigines (brown freckle-like cutaneous spots) induced by treatment with psoralens and ultraviolet light A (PUVA-induced lentigines) with those induced by ... [more ▼] Computerized image analysis was used to compare lentigines (brown freckle-like cutaneous spots) induced by treatment with psoralens and ultraviolet light A (PUVA-induced lentigines) with those induced by solar exposure (actinic lentigines). For these conditions, which appear to be distinctive clinically and histologically, the number, size and shape of the macules were analyzed, revealing significant differences in the two latter parameters. This indicates that UV irradiations of different wave lengths act differently on melanocytes and/or on the interrelation between melanocytes and keratinocytes. The overall effect is much more self-limited in PUVA lentigines than in actinic lentigines, suggesting that the pathophysiology of these lesions is probably different. [less ▲] Detailed reference viewed: 8 (0 ULg)Dermal Dendrocytes and PhotochemotherapyPierard, Gérald ; Nikkels, Arjen ; Arrese Estrada, Jorge et alin Virchows Archiv. A : Pathological Anatomy and Histopathology (1991), 418(4), 311-314 We studied the fate of dermal dendrocytes in patients treated with psoralens and ultraviolet light by combining immunohistochemistry and computerized image analysis. Factor-XIIIa-positive dermal ... [more ▼] We studied the fate of dermal dendrocytes in patients treated with psoralens and ultraviolet light by combining immunohistochemistry and computerized image analysis. Factor-XIIIa-positive dermal dendrocytes were found to be altered in these patients. When compared with controls, dermal dendrocytes were often increased in number and had an uneven size and tissue distribution. Their cytoplasm was occasionally fragmented. These changes were more pronounced when early photosclerosis was present. The alterations described probably reflect vascular changes, and may be responsible for immunomodulating actions and disorder of the connective tissue structure induced by ultraviolet light. [less ▲] Detailed reference viewed: 14 (0 ULg)Les mycétomes, pathologies exotiques et maladies de nos pays; ; et al in Revue Médicale de Liège (1990), 45 Les mycétomes sont des infections bactériennes ou mycotiques. Ils sont le plus souvent rapportés dans les pays tropicaux et subtropicaux, mais ils peuvent se rencontrer dans nos régions. Nous en ... [more ▼] Les mycétomes sont des infections bactériennes ou mycotiques. Ils sont le plus souvent rapportés dans les pays tropicaux et subtropicaux, mais ils peuvent se rencontrer dans nos régions. Nous en rapportons cinq cas pour discuter une actualisation des moyens de diagnostic et les approches thérapeutiques. Ces affections sont caractérisées cliniquement par la présence de fistules et d'écoulements purulents contenant des grains visibles à l'oeil nu. Le diagnostic différentiel est l'actinomycose. [less ▲] Detailed reference viewed: 25 (2 ULg)Dendrocytes et cellules dendritiques épidermiques au cours du photovieillissementPierard-Franchimont, Claudine ; Arrese Estrada, Jorge ; Nikkels, Arjen et alin Annales de Dermatologie et de Vénéréologie (1990), 117(12), 965-967 Detailed reference viewed: 22 (2 ULg)Trichosporonose des immunodéprimésPierard, Gérald ; Pierard-Franchimont, Claudine ; et alin Annales de Dermatologie et de Vénéréologie (1990), 117(11), 856-8 Detailed reference viewed: 32 (1 ULg) |
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