Summary
Neutrophil chemotaxis in ten subjects with psoriasis was evaluated in vivo by the quantitative skin-window technique using autologous serum and in vitro using a modified Boyden technique. The in vitro chemotaxis values of the psoriatics were significantly lower (P<0.01) than those of healthy controls. When measured in vivo, however, we found that, after 9, 12, and 24 h, the values of the migrating polymorphonuclear leukocytes (PMNL) of psoriasis patients were only slightly and non-significantly lower than normal vlaues. Analysing the in vivo chemotaxis data by a chronobiological method, we demonstrated statistically significant circadian rhythms in nine of the ten psoriasis patients. In seven of the patients, we found that the population had a significant rhythm, with the acrophase at-328°. Our in vitro and in vivo values are in agreement with previously published values. However, there was a definite circadian rhythm of migration that we could not demonstrate in normal controls. We consider that our data reveal a significant and important difference between neutrophil chemotaxis in vivo in normal subjects and that in patients with psoriasis.
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Abbreviations
- PMNL:
-
polymorphonuclear leukocytes
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Pigatto, P.D., Radaelli, A., Tadini, G. et al. Circadian rhythm of the in vivo migration of neutrophils in psoriatic patients. Arch Dermatol Res 277, 185–189 (1985). https://doi.org/10.1007/BF00404314
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DOI: https://doi.org/10.1007/BF00404314