home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Collection of Education
/
collectionofeducationcarat1997.iso
/
HEALTH
/
MED9601.ZIP
/
M9610429.TXT
< prev
next >
Wrap
Text File
|
1996-01-30
|
3KB
|
47 lines
Document 0429
DOCN M9610429
TI No relationship between skin-infiltrating TH2-like cells and
allergen-specific IgE response in atopic dermatitis.
DT 9601
AU Virtanen T; Maggi E; Manetti R; Piccinni MP; Sampognaro S; Parronchi P;
De Carli M; Zuccati G; Romognani S; Department of Clinical Microbiology,
University of Kuopio,; Finland.
SO J Allergy Clin Immunol. 1995 Sep;96(3):411-20. Unique Identifier :
AIDSLINE MED/96013057
AB More than 500 CD4+ T-cell clones (TCCs) derived from the skin of eight
patients with atopic dermatitis (AD), two patients with nonatopic
dermatologic disorders, two patients with allergic rhinitis, and one
healthy nonatopic donor were analyzed for both their pattern of cytokine
production and their antigen specificity. The proportions of TCCs from
patients with AD producing interleukin-4 in response to stimulation with
phorbol 12-myristate 13-acetate plus anti-CD3 antibody were higher,
whereas the proportions of interferon-gamma--producing TCCs were lower
than those of control subjects. In two patients with AD, the majority of
TCCs had a TH2/TH0-like phenotype, whereas in six patients with AD a
TH1/TH0-like phenotype was prevalent. TCCs with a TH2/TH0-like phenotype
were also isolated from the healthy skin of two patients with allergic
rhinitis and one nonatopic donor. In contrast, no TH2-like TCCs were
derived from the skin of the two patients with dermatologic disorders of
nonallergic origin. No unambiguous correlations was found between the
proportions of TCCs producing interleukin-4 or interferon-gamma (or of
TCCs with TH2- or TH1-like profile) and the level of total serum IgE,
suggesting that CD4+ T cells infiltrating the atopic skin do not play a
major role in the production of serum IgE antibodies. When TCCs from
five patients with AD were examined for their specificity, the
proportions of allergen-specific (Dermatophagoides pteronyssinus and Lol
p 1) clones were consistently 6% or lower even in patients with high
titers of ryegrassor D. pteronyssinus-specific IgE antibodies. Because
similar percentages of allergen-specific TCCs were found in skin from
two healthy control subjects, the role of aeroallergens in favoring and
maintaining skin lesions in patients with AD remains unclear.
DE Adolescence Adult Allergens/*IMMUNOLOGY Clone Cells CD4-Positive
T-Lymphocytes/IMMUNOLOGY/PATHOLOGY Dermatitis,
Atopic/*IMMUNOLOGY/*PATHOLOGY Epitopes Female Human IgE/*IMMUNOLOGY
Interferon Type II/BIOSYNTHESIS Interleukin-4/BIOSYNTHESIS Lymphocyte
Transformation Male Middle Age Phenotype Skin/*PATHOLOGY Support,
Non-U.S. Gov't Th2 Cells/*IMMUNOLOGY/PATHOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).