May ELISA tests replace IIF in the diagnostic work-up of patients with suspected ANCA-associated vasculitis? The answer is clearly yes according to recently published results of the European Vasculitis Study Group.1
ANCA / vasculitis diagnostics
all posts on ANCAs, all posts on vasculitis diagnostics
The web community GRÜNER CLUB AUTOIMMUN is a voluntary association of scientists, laboratory specialists, medical doctors, students and immunofluorescence enthusiasts from Austria. In their internet blog these experienced IFT professionals discuss questions, ideas and concepts of immunofluorescence tests in autoimmune disease diagnostics.
In a recent posting my Austrian colleague Barbara Fabian, community manager of GRÜNER CLUB AUTOIMMUN, refered to the relationship between the formation of autoantibodies against glomerular basal membrane (GBM) and ANCA (antibodies against cytoplasmic antigens of neutrophil granulocytes). The article was originally written in German language, but we had it translated for the not German speaking readers of the Autoimmunity Blog.
Autoantibodies against Glomerular Basal Membrane and Myeloperoxidase in Crescentic Glomerulonephritis
by Barbara Fabian, Vienna
Crescentic Glomerulonephritis (CGN) is an autoimmune disease of the kidney that leads to vasculitis of the capillaries in the glomeruli. The appearance of characteristic autoantibodies or antibody complexes is indicative of CGN and allows for the differentiation of three groups:
The GRÜNER CLUB AUTOIMMUN blog featured a fine post about the history of indirect immunofluorescence. In that article my Austrian colleague Barbara Fabian, community manager of GRÜNER CLUB AUTOIMMUN, described in great detail how indirect immunofluorescence technology, or: IFT, and also referred to as IIF assay, has become an indispensible tool of autoimmune disease diagnostics over the last two decades, and how IFT has become a standard laboratory technique used in serological autoimmune diagnostics.
Without further ado I have translated Barbara’s post in order to make you this text, and especially the interesting images, available. – Here it is:
The Development of Indirect Immunofluorescence Technology (IFT)
by Barbara Fabian, MSc, Community Manager of GRÜNER CLUB AUTOIMMUN
Over the last 20 years, the detection of autoantibodies has developed into an indispensible component of autoimmune diagnostics. Along with serological and clinical data, autoimmune status has become an important building block in the formation of diagnoses. (more…)
It’s Great When There’s Something to Celebrate!
Last week we had such an occasion at ORGENTEC Diagnostika. The February issue of the Annals of the Rheumatic Diseases, the EULAR Journal, included the results of a clinical evaluation study of our Anti-PR3 hs ELISA. The results are very gratifying for us and reflected well on our product.
The subject of the article? – The effectiveness of our test for the diagnosis of ANCA-associated vasculitis, abbreviated as AAV. This term encompasses autoimmune diseases characterized by the presence of antineutrophil cytoplasmic antibodies, known as ANCA. These diseases include Wegener’s granulomatosis (WG), microscopic polyangiitis (MPA), and Churg-Strauss syndrome (CSS). (more…)