Passive administration of purified secretory IgA from human colostrum induces protection against Mycobacterium tuberculosis in a murine model of progressive pulmonary infection
| Autor: | Armando Cádiz, Alina Puig, Gustavo Falero-Diaz, Cesar Rivas, Rogelio Hernández-Pando, Yanely Tirado, Axel Cervantes, Mohd Nor Norazmi, Reinier Borrero, Alicia Aguilar, Oscar Otero, Frank Camacho, Nadine Alvarez, Armando Acosta, Maria E. Sarmiento |
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| Předmět: |
lcsh:Immunologic diseases. Allergy
Immunoglobulin A Saliva Tuberculosis Immunology Biology Breast milk Mycobacterium tuberculosis Mice fluids and secretions medicine Animals Humans Respiratory system Tuberculosis Pulmonary Antigens Bacterial Mice Inbred BALB C Colostrum Immunization Passive biology.organism_classification medicine.disease Isotype Bacterial Load Disease Models Animal Proceedings Immunoglobulin A Secretory biology.protein lcsh:RC581-607 |
| Zdroj: | Scopus-Elsevier BMC Immunology BMC Immunology, Vol 14, Iss Suppl 1, p S3 (2013) |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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