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Serological epitope profile of anti-Ro52–positive patients with systemic autoimmune rheumatic diseases

Overview of attention for article published in Arthritis Research & Therapy, December 2015
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  • In the top 25% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (80th percentile)

Mentioned by

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1 news outlet

Citations

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16 Dimensions

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32 Mendeley
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Title
Serological epitope profile of anti-Ro52–positive patients with systemic autoimmune rheumatic diseases
Published in
Arthritis Research & Therapy, December 2015
DOI 10.1186/s13075-015-0871-3
Pubmed ID
Authors

Maria Infantino, Francesca Meacci, Valentina Grossi, Maurizio Benucci, Gabriella Morozzi, Elio Tonutti, Marilina Tampoia, Antonina Ott, Wolfgang Meyer, Fabiola Atzeni, Piercarlo Sarzi-Puttini, Mariangela Manfredi, Nicola Bizzaro

Abstract

Ro52 is an interferon-inducible protein of the tripartite motif family. Antibodies against Ro52 have been described in patients with different autoimmune diseases, such as systemic lupus erythematosus and Sjögren's syndrome, that are often associated with anti-Ro60 antibodies. The Ro52 autoantigen is extraordinarily immunogenic, and its autoantibodies are directed against both linear and conformational epitopes. The aim of this study was to evaluate the prevalence of antibodies to the five Ro52 domains, as well as to Ro52 176- to 196-amino acid (aa) and 200-239-aa peptides, in different systemic autoimmune rheumatic diseases (SARDs). We also aimed to verify whether antibodies to a single domain or domain association could increase their diagnostic specificity for any SARD. Serum samples were obtained from 100 anti-Ro52 antibody-positive patients with SARDs and from 68 controls (50 healthy donors and 18 patients with other autoimmune or allergic diseases). A special line immunoassay was created containing a full-length Ro52 antigen expressed in insect cells using the baculovirus system, five recombinant Ro52 antigen fragments [Ro52-1, Ro52-2, Ro52-3, Ro52-4 (partly overlapping Ro52-1 and Ro52-2), and Ro52-5 (partly overlapping Ro52-2 and Ro52-3)], and two Ro52 peptides (176-196 aa and 200-239 aa), all expressed in Escherichia coli. In patients with SARDs, fragment prevalence rates were as follows: Ro52-1 = 3 %, Ro52-2 = 97 %, Ro52-3 = 0 %, Ro52-4 = 9 %, Ro52-5 = 28 %, Ro52 175-196-aa peptide = 6 %, and Ro52 200-239-aa peptide = 74 %. All control samples were negative for the full-length Ro52 and for the five fragments tested. The main epitope of the Ro52 antigen was localized on fragment 2 (aa 125-267), and the majority (97 %) of SARD sera had antibodies that target this fragment. As most of the samples were positive for fragment 2 and only some for fragments 4 or 5, which partially overlap fragment 2, it seems that the target epitope is localized in the middle of fragment 2 or in the area between fragments 4 and 5. No antibody against a single epitope or a combination of epitopes was linked to any of the single SARDs.

Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 32 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Netherlands 1 3%
Unknown 31 97%

Demographic breakdown

Readers by professional status Count As %
Researcher 5 16%
Other 4 13%
Student > Doctoral Student 3 9%
Student > Ph. D. Student 3 9%
Student > Master 3 9%
Other 5 16%
Unknown 9 28%
Readers by discipline Count As %
Medicine and Dentistry 10 31%
Agricultural and Biological Sciences 3 9%
Immunology and Microbiology 3 9%
Biochemistry, Genetics and Molecular Biology 1 3%
Veterinary Science and Veterinary Medicine 1 3%
Other 3 9%
Unknown 11 34%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 7. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 December 2015.
All research outputs
#4,836,164
of 25,374,917 outputs
Outputs from Arthritis Research & Therapy
#1,028
of 3,381 outputs
Outputs of similar age
#70,616
of 380,106 outputs
Outputs of similar age from Arthritis Research & Therapy
#82
of 112 outputs
Altmetric has tracked 25,374,917 research outputs across all sources so far. Compared to these this one has done well and is in the 79th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 3,381 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 9.2. This one has gotten more attention than average, scoring higher than 64% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 380,106 tracked outputs that were published within six weeks on either side of this one in any source. This one has done well, scoring higher than 80% of its contemporaries.
We're also able to compare this research output to 112 others from the same source and published within six weeks on either side of this one. This one is in the 5th percentile – i.e., 5% of its contemporaries scored the same or lower than it.