Abstract
Background: Although occlusive dressings have great potential in the management of psoriasis vulgaris, the therapeutic mechanism is not completely understood. Occlusion artificially restores and corrects the defective barrier in psoriasis plaques. Additionally, occlusion is know to normalize the epidermal calcium gradients in hyperproliferative murine skin models. Methods: To investigate the basis of the therapeutic effect of occlusion on psoriatic plaques, we investigated the ultrastructural morphology of intercorneocyte lipid layers, lamellar bodies, and calcium gradient in chronic plaque-type psoriasis after occlusion with a water vapor-impermeable membrane. The specimens were processed for electron microscopy using: (i) ruthenium tetroxide postfixation; and (ii) ion-capture cytochemistry for calcium localization. Results: Occlusion for 7 days resulted in a nearly mature pattern of intercellular multilamellar structures, re-establishment of the near-normal epidermal calcium gradient, and disappearance of calcium precipitates from the stratum corneum interstices. Conclusions: The normalization of the permeability barrier and epidermal calcium gradient may play important roles in the therapeutic effects of occlusive dressings in chronic plaque-type psoriasis.
| Original language | English |
|---|---|
| Pages (from-to) | 223-231 |
| Number of pages | 9 |
| Journal | International Journal of Dermatology |
| Volume | 40 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2001 Jul 9 |
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All Science Journal Classification (ASJC) codes
- Dermatology
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Basis of occlusive therapy in psoriasis : Correcting defects in permeability barrier and calcium gradient. / Hwang, Sang Min; Ahn, Sung Ku; Menon, Gopinathan K.; Choi, Eung Ho; Lee, Seung Hun.
In: International Journal of Dermatology, Vol. 40, No. 3, 09.07.2001, p. 223-231.Research output: Contribution to journal › Article
TY - JOUR
T1 - Basis of occlusive therapy in psoriasis
T2 - Correcting defects in permeability barrier and calcium gradient
AU - Hwang, Sang Min
AU - Ahn, Sung Ku
AU - Menon, Gopinathan K.
AU - Choi, Eung Ho
AU - Lee, Seung Hun
PY - 2001/7/9
Y1 - 2001/7/9
N2 - Background: Although occlusive dressings have great potential in the management of psoriasis vulgaris, the therapeutic mechanism is not completely understood. Occlusion artificially restores and corrects the defective barrier in psoriasis plaques. Additionally, occlusion is know to normalize the epidermal calcium gradients in hyperproliferative murine skin models. Methods: To investigate the basis of the therapeutic effect of occlusion on psoriatic plaques, we investigated the ultrastructural morphology of intercorneocyte lipid layers, lamellar bodies, and calcium gradient in chronic plaque-type psoriasis after occlusion with a water vapor-impermeable membrane. The specimens were processed for electron microscopy using: (i) ruthenium tetroxide postfixation; and (ii) ion-capture cytochemistry for calcium localization. Results: Occlusion for 7 days resulted in a nearly mature pattern of intercellular multilamellar structures, re-establishment of the near-normal epidermal calcium gradient, and disappearance of calcium precipitates from the stratum corneum interstices. Conclusions: The normalization of the permeability barrier and epidermal calcium gradient may play important roles in the therapeutic effects of occlusive dressings in chronic plaque-type psoriasis.
AB - Background: Although occlusive dressings have great potential in the management of psoriasis vulgaris, the therapeutic mechanism is not completely understood. Occlusion artificially restores and corrects the defective barrier in psoriasis plaques. Additionally, occlusion is know to normalize the epidermal calcium gradients in hyperproliferative murine skin models. Methods: To investigate the basis of the therapeutic effect of occlusion on psoriatic plaques, we investigated the ultrastructural morphology of intercorneocyte lipid layers, lamellar bodies, and calcium gradient in chronic plaque-type psoriasis after occlusion with a water vapor-impermeable membrane. The specimens were processed for electron microscopy using: (i) ruthenium tetroxide postfixation; and (ii) ion-capture cytochemistry for calcium localization. Results: Occlusion for 7 days resulted in a nearly mature pattern of intercellular multilamellar structures, re-establishment of the near-normal epidermal calcium gradient, and disappearance of calcium precipitates from the stratum corneum interstices. Conclusions: The normalization of the permeability barrier and epidermal calcium gradient may play important roles in the therapeutic effects of occlusive dressings in chronic plaque-type psoriasis.
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UR - http://www.scopus.com/inward/citedby.url?scp=0034960420&partnerID=8YFLogxK
U2 - 10.1046/j.1365-4362.2001.01158.x
DO - 10.1046/j.1365-4362.2001.01158.x
M3 - Article
VL - 40
SP - 223
EP - 231
JO - International Journal of Dermatology
JF - International Journal of Dermatology
SN - 0011-9059
IS - 3
ER -