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Type III hypersensitivity, in the Gell and Coombs classification of allergic reactions, occurs when there is accumulation of immune complexes (antigen-antibody complexes) that have not been adequately cleared by innate immune cells, giving rise to an inflammatory response and attraction of leukocytes.
Serum sickness is a type III hypersensitivity reaction, caused by immune complexes. [2] When an antiserum is given, the human immune system can mistake the proteins present for harmful antigens . The body produces antibodies, which combine with these proteins to form immune complexes. [ 2 ]
Phenoxymethylpenicillin, also known as penicillin V (PcV) and penicillin VK, is an antibiotic useful for the treatment of a number of bacterial infections. [2] Specifically it is used for the treatment of strep throat, otitis media, and cellulitis. [2] It is also used to prevent rheumatic fever and to prevent infections following removal of the ...
The Skeeter syndrome should not be confused with another type of reactivity to mosquito bites, severe mosquito bite allergy (SMBA). SMBA is most often an Epstein-Barr virus-associated lymphoproliferative disease that complicates ~33% of individuals with chronic active Epstein-Barr virus infection or, in extremely rare cases, individuals with Epstein-Barr virus-positive Hodgkin disease or an ...
Cross-reactivity, in a general sense, is the reactivity of an observed agent which initiates reactions outside the main reaction expected. This has implications for any kind of test or assay , including diagnostic tests in medicine, and can be a cause of false positives .
The terms CCD or CCDs describe protein-linked carbohydrate structures responsible for the phenomenon of cross-reactivity of sera from allergic patients towards a wide range of allergens from plants and insects. In serum-based allergy diagnosis, antibodies of the IgE class directed against CCDs therefore give the impression of polysensitization ...
Allergic reaction; Same mode of action as other beta-lactam antibiotics: disrupt the synthesis of the peptidoglycan layer of bacterial cell walls. Ceftobiprole: Zeftera: Used to treat MRSA (methicillin-resistant Staphylococcus aureus), penicillin-resistant Streptococcus pneumoniae, Pseudomonas aeruginosa, and enterococci: Gastrointestinal upset ...
Identifying an allergy to penicillin requires a hypersensitivity skin test, which diagnoses IgE-mediated immune responses caused by penicillin. This test is typically performed by an allergist who uses a skin-prick and intradermal injection of penicilloyl-polylysine, a negative control (normal saline), and a positive control ( histamine ).