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Eur Ann Allergy Clin Immunol ; 47(3): 91-4, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25951147

RESUMO

PROBLEM: It's well known that iv. immunoglobulins may be useful to overcome habitual abortions, but the mechanisms at the base of a successful outcome and the likelihoods are still unknown. METHOD OF STUDY: In one hundred and sixty women with habitual abortions and one hundred and sixty healthy mothers, we evaluated blood IgG subclasses; among the patients, sixteen merely showed IgG subclass deficiency, after leaving out any autoimmunity and/or coagulation disorders. All the patients (100%) showed IgG3, twelve (75%) IgG1, eight (50%) IgG4 and six (37,5%) IgG2 deficiency; healthy control people's IgG subclasses fell in normal range in 156 women, but just four women showed IgG2 and IgG4 deficiency with neither immune deficiency's clinical marks nor increased vulnerability to infections. All the patients were treated with whole immunoglobulins iv. infusion (200 mg/kg/monthly) all over the pregnancy. RESULTS: The successful pregnancy rate is very high (>90%): 100% out of women showing IgG1 (12/12), 87,5% of IgG3 (14/16), 75% of IgG4 (6/8) and 66% of IgG2 deficiency (4/6) had successful pregnancies. The Odd's Ratio between IgG subclass deficiency and recurrent abortions is 4,33 with confidence interval of 95%; chi square value is 7.68 (p<0.025). CONCLUSIONS: Low dose immunoglobulin infusion is the only effective way to reach successful pregnancy, despite previous habitual abortions in patients suffering from IgG subclass deficiency without autoimmunity and/or coagulation disorders, likely restoring idiotype-antiidiotype network; showing evidence of IgG subclasses deficiency (mostly IgG1 and IgG3) may help identify patients who can benefit from iv. immunoglobulin treatment.


Assuntos
Aborto Habitual/prevenção & controle , Deficiência de IgG/tratamento farmacológico , Imunoglobulina G/sangue , Imunoglobulinas Intravenosas/administração & dosagem , Aborto Habitual/sangue , Aborto Habitual/diagnóstico , Aborto Habitual/imunologia , Biomarcadores/sangue , Estudos de Casos e Controles , Feminino , Humanos , Deficiência de IgG/sangue , Deficiência de IgG/diagnóstico , Deficiência de IgG/imunologia , Imunoglobulina G/classificação , Infusões Intravenosas , Nascido Vivo , Razão de Chances , Gravidez , Fatores de Risco , Resultado do Tratamento
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