Abstract:
BACKGROUND:The molecular pathogenesis underlying recurrent exacerbations of atopic dermatitis (AD) is unclear. Some peripheral CCR4(+) and CCR7(+) helper memory T cells express the specific homing receptor, sialyl 6-sulfo Lewis X (G152 glycan). This glycan loses receptor activity via cyclization of its sialic acid moiety, thus becoming cyclic sialyl 6-sulfo Lewis X (G159 glycan). These findings suggest that the disordered expression of G152 and G159 glycans may be associated with recurrent exacerbations of AD. OBJECTIVE:To assess the possible association of G152 and G159 glycans, which are expressed on peripheral helper T (Th) cells, with frequency of exacerbations. METHODS:The percentage of glycan-expressing cells among peripheral blood CD4(+)CD45RO(+) lymphocytes was determined by flow cytometry. The association of glycans with the frequency of exacerbations determined by recurrence scores as well as with current disease activity was statistically tested. RESULTS:Current disease activity was significantly associated with CCR4(+)CCR7(-) memory Th cells expressing CSLEX-1 glycan, the conventional skin-trafficking receptor without sialic-acid-cyclization activity. In contrast, the frequency of exacerbations was positively and negatively associated with CCR4(+)CCR7(+) memory Th cells expressing G152 and G159 glycans, respectively. Receiver operating characteristics analyses indicated that the ratio of the G152(+)/G159(+) cell percentages discriminated patients with highly recurrent AD with the best accuracy. CONCLUSION:Flow cytometric determination of G159 and G152 glycans on peripheral helper memory T cells may be clinically useful for identifying patients with highly recurrent AD. Disordered sialic acid cyclization of G152 glycan may underlie highly recurrent AD, which may provide a novel therapeutic approach.
journal_name
J Dermatol Scijournal_title
Journal of dermatological scienceauthors
Sakuma K,Furuhashi T,Kondo S,Yabe U,Ohmori K,Ito H,Aoki M,Morita A,Kannagi Rdoi
10.1016/j.jdermsci.2012.09.015subject
Has Abstractpub_date
2012-12-01 00:00:00pages
187-93issue
3eissn
0923-1811issn
1873-569Xpii
S0923-1811(12)00294-0journal_volume
68pub_type
杂志文章abstract:BACKGROUND:The analysis of prognostic factors in Japanese cases of cutaneous T-cell lymphoma (CTCL) is scarce. Clusterin is a ubiquitous 80kDa heterodimeric glycoprotein expressed on tumor cells of systemic and primary cutaneous anaplastic large cell lymphoma. The expression of clusterin in mycosis fungoides (MF) and S...
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journal_title:Journal of dermatological science
pub_type: 杂志文章
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更新日期:2005-04-01 00:00:00
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