Efficacy of orally administered immune serum globulin against type III group B streptococcal colonization and systemic disease in an infant rat model.

Abstract:

:We established an experimental animal model of the gastrointestinal colonization and systemic disease following oral challenge of type III group B streptococcal strain in 3-day-old newborn rats. Two type III group B streptococcal strains isolated from the cerebrospinal fluid of septic newborn infants produced colonization in 57-87% of the challenged animals and 13-31% of these colonized animals developed systemic disease. Using this new animal model, we evaluated the effect of orally administered human immune serum globulin on the colonization and systemic disease. This antiserum contained 21 micrograms/ml of type III group B streptococcal antibody of human IgG class. Animals fed with immune serum globulin developed significantly lower rates of colonization and systemic disease than those of control (albumin or saline) (23 versus 71%, p less than 0.001 for colonization; 7 versus 31%, p less than 0.05 for systemic disease). However, rates of the development of systemic disease among the colonized animals were not significantly different between the two groups (33 versus 43%, p greater than 0.1). These findings suggest that orally administered immune serum globulin is beneficial in the prevention of colonization and systemic disease in this rat model and that this protective effect of oral immune serum globulin occurs primarily at the mucosal level.

journal_name

Pediatr Res

journal_title

Pediatric research

authors

Kim KS,Dunn K,McGeary SA,Stiehm ER

doi

10.1203/00006450-198412000-00022

subject

Has Abstract

pub_date

1984-12-01 00:00:00

pages

1329-31

issue

12

eissn

0031-3998

issn

1530-0447

journal_volume

18

pub_type

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