W N Erber1, J I Willis, G J Hoffman. 1. Haematology Department, Royal Perth Hospital, Australia. wenderbe@dunamis.rph.uwa.edu.au
Abstract
AIMS: The detection of cellular antigens in fixed decalcified bone marrow trephine (BMT) sections depends on the method of processing, the nature of the antigen and antibody, antigen retrieval techniques, and the sensitivity of the immunocytochemical method. This study evaluated a tyramide enhanced avidin-biotin immunostaining method on formalin fixed decalcified BMT sections to determine whether the method could detect previously undetectable antigens. METHODS: Nineteen BMT biopsies from a range of haematological disorders were evaluated with 43 antibodies to haemopoietic antigens using horseradish peroxidase and alkaline phosphatase detection methods, using the tyramide enhanced avidin-biotin immunostaining method. RESULTS: Compared with standard avidin-biotin immunostaining methods the tyramide enhanced immunostaining method showed enhanced signal intensity, gave positive labelling for antigens that require pretreatment by other methods, and previously unreactive antigens were detected. Primary antibodies could be used at up to 200 times higher dilutions. CONCLUSION: The tyramide enhanced immunostaining method, while retaining specificity, is highly sensitive and enables an increased number and range of antigens to be detected than previously possible. The method could be applied to BMT sections for the routine diagnosis and classification of haematological disorders.
AIMS: The detection of cellular antigens in fixed decalcified bone marrow trephine (BMT) sections depends on the method of processing, the nature of the antigen and antibody, antigen retrieval techniques, and the sensitivity of the immunocytochemical method. This study evaluated a tyramide enhanced avidin-biotin immunostaining method on formalin fixed decalcified BMT sections to determine whether the method could detect previously undetectable antigens. METHODS: Nineteen BMT biopsies from a range of haematological disorders were evaluated with 43 antibodies to haemopoietic antigens using horseradish peroxidase and alkaline phosphatase detection methods, using the tyramide enhanced avidin-biotin immunostaining method. RESULTS: Compared with standard avidin-biotin immunostaining methods the tyramide enhanced immunostaining method showed enhanced signal intensity, gave positive labelling for antigens that require pretreatment by other methods, and previously unreactive antigens were detected. Primary antibodies could be used at up to 200 times higher dilutions. CONCLUSION: The tyramide enhanced immunostaining method, while retaining specificity, is highly sensitive and enables an increased number and range of antigens to be detected than previously possible. The method could be applied to BMT sections for the routine diagnosis and classification of haematological disorders.
Authors: E C Cuevas; A C Bateman; B S Wilkins; P A Johnson; J H Williams; A H Lee; D B Jones; D H Wright Journal: J Clin Pathol Date: 1994-05 Impact factor: 3.411
Authors: G Cattoretti; S Pileri; C Parravicini; M H Becker; S Poggi; C Bifulco; G Key; L D'Amato; E Sabattini; E Feudale Journal: J Pathol Date: 1993-10 Impact factor: 7.996
Authors: Linda W Gonzales; Robert Gonzalez; Anne Marie Barrette; Ping Wang; Leland Dobbs; Philip L Ballard Journal: J Histochem Cytochem Date: 2015-09-15 Impact factor: 2.479