PMID- 22903669 OWN - NLM STAT- MEDLINE DCOM- 20121001 LR - 20161109 IS - 0065-2598 (Print) IS - 0065-2598 (Linking) VI - 750 DP - 2012 TI - Multi-faceted role of naturally occurring autoantibodies in fighting pathogens. PG - 100-13 LID - 10.1007/978-1-4614-3461-0_8 [doi] AB - Naturally occurring antibodies (NAbs) play a vital role in the first line of defense against bacterial and viral infections. Most studies in mice and man have attributed this role to NAbs of the IgM isotype. However, there is also a significant amount of data on the anti-infectious function of NAbs of the IgG isotype. Most of these observations are derived from studies using a privileged source of NAbs, the pooled human IgG for intravenous application, IVIG. In addition to its use as a replacement in humoral immunodeficiencies, IVIG is extensively used in autoimmune and inflammatory diseases. The properties of NAbs, the principal components of IVIG, are considered crucial for their immune-regulatory properties, owing to their ability to recognize self-antigens and even autoantibodies. By virtue of these specificities for several cellular antigens, including exposed proteins that act as receptors for a variety of pathogens, certain NAbs in IVIG have a therapeutic role in preventing or modulating infections. We summarize in this chapter several examples that highlight the importance of NAbs in the control of certain bacterial and viral infections. FAU - Bouhlal, Hicham AU - Bouhlal H AD - INSERM UMR 925, Amiens, France. hicham.bouhlal@u-picardie.fr FAU - Kaveri, Srini AU - Kaveri S LA - eng PT - Journal Article PT - Review PL - United States TA - Adv Exp Med Biol JT - Advances in experimental medicine and biology JID - 0121103 RN - 0 (Autoantibodies) RN - 0 (Autoantigens) RN - 0 (Immunoglobulin M) RN - 0 (Immunoglobulins, Intravenous) RN - 0 (Receptors, Virus) SB - IM MH - Autoantibodies/*immunology MH - Autoantigens/immunology MH - Bacterial Infections/*drug therapy/immunology/microbiology MH - Clinical Trials as Topic MH - Host-Pathogen Interactions/immunology MH - Humans MH - Immunoglobulin M/immunology MH - Immunoglobulins, Intravenous/administration & dosage/*immunology MH - Receptors, Virus/antagonists & inhibitors/*immunology MH - Virus Diseases/*drug therapy/immunology/virology EDAT- 2012/08/21 06:00 MHDA- 2012/10/02 06:00 CRDT- 2012/08/21 06:00 PHST- 2012/08/21 06:00 [entrez] PHST- 2012/08/21 06:00 [pubmed] PHST- 2012/10/02 06:00 [medline] AID - 10.1007/978-1-4614-3461-0_8 [doi] PST - ppublish SO - Adv Exp Med Biol. 2012;750:100-13. doi: 10.1007/978-1-4614-3461-0_8.