Abstract：
:To study the role of antibodies in promoting survival during gram-negative bacterial sepsis, we have developed several murine monoclonal antibodies (MAbs). One MAb (5B10) reacted in an enzyme-linked immunosorbent assay with only a single organism (Escherichia coli 0111:B4), while the other (8A1) reacted to all gram-negative whole-cell and lipopolysaccharide (LPS) antigens examined. Either 5B10 MAb, 8A1 MAb, or sterile saline solution was administered intravenously to outbred male Swiss-Webster mice immediately before one of three challenges: (1) viable bacteria intravenously, (2) viable bacteria with hemoglobin intraperitoneally, or (3) intravenous actinomycin D plus LPS. 5B10 MAb provided significant protection against either an E. coli 0111:B4 bacterial or LPS challenge but not against any other organism or type of LPS. 8A1 MAb provided protection against several challenge bacteria (intravenously or intraperitoneally) and against all types of LPS studied except Pseudomonas aeruginosa LPS. A higher dose (2 mg) of cross-reactive antibody (8A1 MAb) was required to produce protection when compared with the type-specific protection produced with 5B10 MAb (0.1 mg). Although ideal antibody therapy would consist of directing a specific MAb against a single microorganism, the acute nature of the disease process and time required to prepare reagents may preclude the use of type-specific MAbs. We believe that the cross-reactive and cross-protective capacity of 8A1 MAb or a similar MAb may be useful in averting the lethal effects of clinical gram-negative bacterial sepsis and warrants testing in the clinical setting.
journal_name
Surgeryjournal_title
Surgeryauthors
Dunn DL,Bogard WC Jr,Cerra FBsubject
Has Abstractpub_date
1985-08-01 00:00:00pages
283-90issue
2eissn
0039-6060issn
1532-7361journal_volume
98pub_type
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