IgA deficiency: clinical correlates with IgG subclass and mannan-binding lectin deficiencies
P. R. health sci. j
;
24(2): 107-110, Jun. 2005.
Artigo
em Inglês
| LILACS
| ID: lil-472974
ABSTRACT
OBJECTIVE: To characterize an IgA deficient population in terms of the incidence of IgG subclass and mannose-binding lectin (MBL) deficiencies and the type and severity of infections and other associated disorders. BACKGROUND: Selective IgA deficiency is probably the commonest of the primary immunodeficiency disorders and although it may lead to an increased risk for respiratory and gastrointestinal infections and associated to various autoimmune diseases, it may also be asymptomatic. Several studies have suggested the need of a concomitant defect in order for manifestation of its symptoms. METHODS: A total of 27 patients fulfilling the diagnostic criteria of selective IgA deficiency were evaluated for IgG subclass and MBL deficiencies after a thorough medical history, physical examination and pertinent evaluation for concomitant medical conditions. RESULTS: The overall incidence of IgG subclass deficiency found in the IgA deficient group was 18.5. MBL deficiency was found to be 3.7. These frequencies may have been influenced by the age group evaluated and the size of the population studied. Severe infections were more common in patients with combined deficiencies, either IgA and any of the IgG subclasses or IgA and MBL deficiency. Atopy was widely represented in the patients studied. CONCLUSIONS: The observed relationship between combined deficiencies Ig A, IgG subclasses and MBL and the increased representation of severe infections needs to be corroborated in a larger sample of patients with an inclusion of pediatric patients.
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Índice:
LILACS (Américas)
Assunto principal:
Deficiência de IgA
/
Lectina de Ligação a Manose
Tipo de estudo:
Estudo diagnóstico
Limite:
Adulto
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
P. R. health sci. j
Assunto da revista:
Medicina
Ano de publicação:
2005
Tipo de documento:
Artigo
País de afiliação:
Porto Rico
Instituição/País de afiliação:
University of Puerto Rico/PR
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