Male microchimerism and HLA compatibility in French women with sclerodema: a different profile in limited and diffuse subset.
Rheumatology (Oxford)
; 48(4): 363-6, 2009 Apr.
Article
em En
| MEDLINE
| ID: mdl-19208687
ABSTRACT
OBJECTIVES:
Male microchimerism (Mc) persisting from pregnancy has been found at greater frequencies and/or higher quantities in women with scleroderma (SSc) compared with controls, suggesting a possible role in disease development. Moreover, women with an HLA-compatible child have a higher risk to develop SSc. We tested the hypothesis, on our French SSc cohort, that women with lcSSc and dcSSc, two distinct clinical subsets, have a different profile in terms of Mc and HLA compatibility in families.METHODS:
We studied 98 women (52 lcSSc and 46 dcSSc) for male Mc, by real-time PCR, in their whole blood and/or peripheral blood mononuclear cells (PBMC). Similarly, 91 matched healthy women were analysed. Complete HLA-DRB1 typing was obtained for 58 SSc and 68 control families (proband/children).RESULTS:
Women with lcSSc (N = 50) had male Mc more often in their whole blood than women with dcSSc (N = 40, 20 vs 5%, P = 0.038), but not significantly more than controls. By contrast, women with dcSSc (N = 36) hold Mc more often in PBMC (25 vs 9%), but not significantly and have greater quantities than controls (N = 82, P = 0.048). This contrast is also visible in feto-maternal HLA-DRB1 compatibility, which was increased only among women with lcSSc (N = 33) compared with controls (N = 68, P = 0.003).CONCLUSION:
For the first time, we showed that women with lcSSc and dcSSc hold male Mc in different blood compartments. Furthermore, a distinct pattern between the two SSc subtypes is observed for feto-maternal HLA-DRB1 compatibility. These results suggest a different mechanism behind each type of disease.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Escleroderma Sistêmico
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Gravidez
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Quimerismo
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Mães
Tipo de estudo:
Observational_studies
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Risk_factors_studies
Limite:
Adolescent
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Adult
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Aged
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Child
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Female
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Humans
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Male
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Middle aged
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Pregnancy
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article