Coexistence of Free Antigens, Free Antibodies and Immune Complexes in Sera from Patients with Suspected Deep‐seated Candidosis
- 1 January 1989
- Vol. 32 (1) , 24-32
- https://doi.org/10.1111/j.1439-0507.1989.tb02165.x
Abstract
Summary: Two commercially available latex agglutination tests:Cand‐TEC(TM) from RAMCO Laboratories, Inc., Houston, Texas, USA, for the detection of a heat labile Candida antigen, andLA‐ Candida Antigen Detection System from Immuno‐Mycologics (IMMY), Inc., Norman, Oklahoma, USA, for the detection of Candida mannan antigen, andOwn LAT, a self‐prepared latex agglutination test for the detection of Candida mannan antigen were tested on 467 sera of patients at risk for deep‐seated Candidosis. Separate, parallel investigations were made to demonstrate anti‐ Candida antibodies (3 methods), circulating immune complexes (not antigen‐specific, 2 methods), and rheumatoid factor (2 methods). Specificity and sensitivity of the mannan antigen detection systems were studied. Conditions of specific and non‐specific mannan binding to antisera were studied in a defined mannan‐antiserum system. The potential and the limitations of the Candida mannan antigen and protein antigen detection systems using latex particle agglutination are evaluated.Zusammenfassung: Zwei kommerziell er‐haltliche Latex ‐ Agglutinationsteste:—Cand‐TEC (TM) der RAMCO Laboratories, Inc. Houston, Texas, USA, zum Nachweis eines hitzelabilen Candi‐da‐Antigens, und—LA‐ Candida Antigen Detection System von Immuno‐Mycologics (IMMY), Inc., Norman, Oklahoma, USA, sowie—Own LAT, ein Latex‐Agglutinationstest eigener Herstellung zum Nachweis von Candida ‐Mannan ‐Antigen wurden an 467 Risikopatienten für tieflokalisierte Candidosen geprüft. Parallel hierzu wurden die Seren auf Anti‐Candida‐ Antikörper mittels 3 Metho‐den, auf zirkulierende Immunkomplexe mittels 2 nicht antigen‐spezifischen Me‐thoden und auf Rheumafaktor mittels 2 Methoden untersucht. Es wurde die Spe‐zifität und die Sensitivität der Man‐nan‐Antigen‐Nachweismethoden verglei‐chend geprüft. Die Bedingungen der spe‐zifischen und der unspezifischen Mannan‐bindung an Antiseren wurde in einem defi‐nierten Mannan‐Antiserum‐System untersucht. Die Möglichkeiten und Grenzen der Nachweismethoden für Candi‐da‐Mannanantigen und Candida‐Protein‐antigen mittels Latex‐Agglutination wur‐den bewertet.Keywords
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