Passive administration of purified secretory IgA from human colostrum induces protection against Mycobacterium tuberculosis in a murine model of progressive ... View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2013-02-25

AUTHORS

Nadine Alvarez, Oscar Otero, Frank Camacho, Reinier Borrero, Yanely Tirado, Alina Puig, Alicia Aguilar, Cesar Rivas, Axel Cervantes, Gustavo Falero-Díaz, Armando Cádiz, María E Sarmiento, Mohd Nor Norazmi, Rogelio Hernández-Pando, Armando Acosta

ABSTRACT

BACKGROUND: Immunoglobulin A is the most abundant isotype in secretions from mucosal surfaces of the gastrointestinal, respiratory and genitourinary tracts and in external secretions such as colostrum, breast milk, tears and saliva. The high concentration of human secretory IgA (hsIgA) in human colostrum strongly suggests that it should play an important role in the passive immune protection against gastrointestinal and respiratory infections. MATERIALS AND METHODS: Human secretory IgA was purified from colostrum. The reactivity of hsIgA against mycobacterial antigens and its protective capacity against mycobacterial infection was evaluated. RESULTS: The passive administration of hsIgA reduces the pneumonic area before challenge with M. tuberculosis. The intratracheal administration of M. tuberculosis preincubated with hsIgA to mice greatly reduced the bacterial load in the lungs and diminished lung tissue injury. CONCLUSIONS: HsIgA purified from colostrum protects against M. tuberculosis infection in an experimental mouse model. More... »

PAGES

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Identifiers

URI

http://scigraph.springernature.com/pub.10.1186/1471-2172-14-s1-s3

DOI

http://dx.doi.org/10.1186/1471-2172-14-s1-s3

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1047750398

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/23458564


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