Serum immunoglobulins in the infected and convalescent phases in community-acquired pneumonia
Por:
de la Torre, MC, Bolibar, I, Vendrell, M, de Gracia, J, Vendrell, E, Rodrigo, MJ, Boquet, X, Torrebadella, P, Yebenes, JC, Serra-Prat, M, Rello, J, Torres, A, Almirall, J
Publicada:
1 dic 2013
Resumen:
Background: A population-based case-control study was designed to assess changes of serum levels of immunoglobulins and IgG subclasses between infected and convalescent phase in community-acquired pneumonia (CAP).
Methods: Over a 2-year period, all subjects who were >14 years of age living in the Maresme region (Barcelona, Spain) diagnosed of CAP were registered. Controls were healthy subjects selected from the municipal census. Prognostic factors were assessed and serum levels of total IgG, IgA, IgM, and IgG subclasses were measured at diagnosis and 1 month later (cases).
Results: We studied 171 patients with CAP and 90 controls. All immunoglobulins were significantly lower in cases than in controls. At diagnosis, 42.7% of cases showed low levels of some immunologic parameter, mainly total IgG and IgG2. Low immunoglobulin levels at diagnosis were more frequent in patients requiring in-patient care and in those with pneumonia of other etiology than Streptococcus pneumoniae. In the convalescent phase, 26 (23.6%) patients normalized immunological levels. In 27 (24.5%) cases, some parameter with low levels persisted especially in patients with etiology of CAP other than S. pneumoniae.
Conclusions: Low serum levels of immunoglobulins particularly total IgG and IgG2 were a common finding in patients with CAP compared to healthy controls. Low immunoglobulin levels may be related to CAP prognosis and persisted in the convalescent phase in one-fourth of cases. (C) 2013 Elsevier Ltd. All rights reserved.
Filiaciones:
de la Torre, MC:
Univ Autonoma Barcelona, Crit Care Serv, Hosp Mataro, CIBERES, E-08193 Barcelona, Spain
Bolibar, I:
Univ Autonoma Barcelona, Dept Clin Epidemiol & Publ Hlth, Ciber Epidemiol & Salud Publ CIBERESP, Inst Biomed Res IIB Sant Pau Barcelona, E-08193 Barcelona, Spain
Vendrell, M:
Hosp Josep Trueta, CIBERES, Dept Pneumol, Girona, Spain
de Gracia, J:
Hosp Univ Vall dHebron, CIBERES, Dept Pneumol, Barcelona, Spain
Vendrell, E:
Univ Autonoma Barcelona, CIBERES, Hosp Mataro, Dept Internal Med, E-08193 Barcelona, Spain
Rodrigo, MJ:
Univ Autonoma Barcelona, CIBERES, Hosp Univ Vall dHebron, Dept Biochem, E-08193 Barcelona, Spain
Boquet, X:
Univ Autonoma Barcelona, CIBERES, Hosp Mataro, Dept Biochem, E-08193 Barcelona, Spain
Torrebadella, P:
Univ Autonoma Barcelona, Hosp Univ Germans Trias & Pujol, Crit Care Serv, E-08193 Barcelona, Spain
Yebenes, JC:
Univ Autonoma Barcelona, Crit Care Serv, Hosp Mataro, CIBERES, E-08193 Barcelona, Spain
Serra-Prat, M:
Consorci Sanitari Maresme, Res Unit, Barcelona, Spain
CIBEREHD, Barcelona, Spain
Rello, J:
Univ Autonoma Barcelona, CIBERES, Hosp Univ Vall dHebron, Crit Care Dept, E-08193 Barcelona, Spain
Torres, A:
Univ Barcelona, CIBERES, Hosp Clin Barcelona, Serv Pneumol,Inst Clin Torax,IDIBAPS, Barcelona, Spain
Almirall, J:
Univ Autonoma Barcelona, Crit Care Serv, Hosp Mataro, CIBERES, E-08193 Barcelona, Spain
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