Volume 69, Number 2 (5 2011)                   Tehran Univ Med J 2011, 69(2): 92-98 | Back to browse issues page

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A A, M M, N R, Z S, D H, K D et al . The assessment of antibody response following immunization with polysaccharide vaccine in patients with chronic kidney disease. Tehran Univ Med J. 2011; 69 (2) :92-98
URL: http://tumj.tums.ac.ir/article-1-262-en.html

1- , dmahmoodi@razi.tums.ac.ir
Abstract:   (2594 Views)
Background: An increased risk for invasive infections with encapsulated bacteria such as Streptococcus pneumoniae has been described in patients with chronic kidney disease (CKD) or in those on dialysis. The aim of this study was to evaluate the antibody response to pneumococcal capsular polysaccharide vaccine in CKD patients. Methods: Sixty-six patients with CKD and 40 healthy individuals were vaccinated with pneumococcal polysaccharide vaccine. The serum antibody response (IgG and IgG2) to the Pneumovax antigens was determined by enzyme-linked immunosorbent assay (ELISA) prior to and four weeks after vaccination. Results: Out of 66 vaccinated patients with CKD, 14 were found to be hyporesponsive to the vaccine (Group 1). Patients with normal specific antibody response were regarded as respondents and were assigned to Group 2 (n=52). The mean post-vaccination IgG titer to the pneumococcal antigens in Group 1 was significantly lower than those in Group 2 (P=0.012 for IgG and P=0.02 for IgG2). The increased anti-pneumococcal IgG titer was significantly lower in patients in Group 1 versus Group 2 (P=0.001) or the healthy control group (P=0.005). During the follow-up period of patients, patients in Group 1 developed higher episodes of pneumococcal infections than those in Group 2 (P=0.007). Conclusion: A substantial proportion of patients with chronic kidney disease fail to mount an adequate antibody response to pneumococcal antigens and remain at significant risk for such infections. These patients should be offered other prophylactic measures to protect them against invasive pneumococcal diseases.
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