| 摘要 |
Infection of mammals by an acid-resistant microorganism (A) is detected by treating a fecal sample with at least two different monoclonal antibodies (MAb) (or their fragments or derivatives) or aptamers (collectively (I)) and detecting formation of a complex (C) between (I) and the corresponding antigen of (A). Infection of mammals by an acid-resistant microorganism (A) is detected by treating a fecal sample with at least two different monoclonal antibodies (MAb) (or their fragments or derivatives) or aptamers (collectively (I)) and detecting formation of a complex (C) between (I) and the corresponding antigen of (A). The first and second (I) bind to epitopes of different antigens (Ag). These epitopes are present, after passage through the intestines, in at least some mammals, and have either: (i) their native structure; or (ii) a structure against which an antibody is produced by an animal infected or immunized with (A), or its extract, lysate, derived protein or fragment, or with a synthetic peptide. Practically all mammals display at least one of the specified epitopes. Independent claims are also included for the following: (1) MAb, or their fragments or derivatives, that bind a variable (V) region consisting of specified CDRs (complementarity determining regions) or produced by particular hybridomas; (2) aptamers that bind to the same antigens as MAb of (a); (3) epitopes that are specifically bound by (a) or (b); (4) antibodies (or fragments or derivatives) that bind to (c); (5) diagnostic composition containing at least two (I), optionally fixed to a carrier; (6) test device for detecting epitopes of (c); (7) kits containing at least two (I), optionally immobilized, a device for processing a fecal sample and optionally a mixture of at least two (I); (8) composition, particularly a pharmaceutical, containing at least one (I), optionally also a carrier and/or diluent; and (9) package containing (e)-(g). ACTIVITY : Antibacterial. MECHANISM OF ACTION : None given. |
