Indirect immunofluorescent assay as an aid in the diagnosis of suspected immune mediated ataxias View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2021-02-16

AUTHORS

Marios Hadjivassiliou, Graeme Wild, Priya Shanmugarajah, Richard A. Grünewald, Mohammed Akil

ABSTRACT

Background and purposeImmune mediated cerebellar ataxias account for a substantial proportion of all progressive ataxias. A diagnostic serological test is not always available. This is particularly problematic in Primary Autoimmune Cerebellar Ataxia, hence the necessity for diagnostic criteria recently devised and published by an International Task Force. We present our experience in the use of a commercially available indirect immunofluorescence assay, intended to be used for the detection of antibodies associated with paraneoplastic neurological syndromes.MethodsRetrospective review of patients with ataxia who underwent serological testing using this assay as part of their diagnostic evaluation. We were interested in 3 groups: suspected immune mediated ataxias, genetically confirmed ataxias and patients with cerebellar variant of multi-system atrophy (MSA-C). The indirect immunofluorescence assay was performed using commercially available monkey cerebellum slides and anti-human IgG FITC conjugated antiserum.ResultsA total of 300 patients that had this test and fitted into one of these 3 groups (immune ataxias 190, genetic ataxias 60, MSA-C 50) were identified. The prevalence of positive immunofluorescence but negative immunoblot was 172/190 (91%) in the suspected immune ataxia group, 3/60 (5%) in the genetic group and 2/50 (4%) in the MSA-C group. The difference between the first and the other groups was significant χ2 (1, N = 291) = 64.2, p < 00001.ConclusionsThis report demonstrates that a commercially available immunofluorescence assay can be used to provide additional diagnostic aid for suspected immune mediated ataxias and in particular Primary Autoimmune Cerebellar Ataxia where no diagnostic marker exists. More... »

PAGES

6

Identifiers

URI

http://scigraph.springernature.com/pub.10.1186/s40673-021-00129-1

DOI

http://dx.doi.org/10.1186/s40673-021-00129-1

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1135415188

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/33593427


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