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A unique role for galectin-9 in angiogenesis and inflammatory arthritis

Overview of attention for article published in Arthritis Research & Therapy, February 2018
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Title
A unique role for galectin-9 in angiogenesis and inflammatory arthritis
Published in
Arthritis Research & Therapy, February 2018
DOI 10.1186/s13075-018-1519-x
Pubmed ID
Authors

Martin J. O’Brien, Qiang Shu, W.Alexander Stinson, Pei-Suen Tsou, Jeffrey H. Ruth, Takeo Isozaki, Phillip L. Campbell, Ray A. Ohara, Alisa E. Koch, David A. Fox, M. Asif Amin

Abstract

Galectin-9 (Gal-9) is a mammalian lectin secreted by endothelial cells that is highly expressed in rheumatoid arthritis synovial tissues and synovial fluid. Roles have been proposed for galectins in the regulation of inflammation and angiogenesis. Therefore, we examined the contribution of Gal-9 to angiogenesis and inflammation in arthritis. To determine the role of Gal-9 in angiogenesis, we performed human dermal microvascular endothelial cell (HMVEC) chemotaxis, Matrigel tube formation, and mouse Matrigel plug angiogenesis assays. We also examined the role of signaling molecules in Gal-9-induced angiogenesis by using signaling inhibitors and small interfering RNA (siRNA). We performed monocyte (MN) migration assays in a modified Boyden chamber and assessed the arthritogenicity of Gal-9 by injecting Gal-9 into mouse knees. Gal-9 significantly increased HMVEC migration, which was decreased by inhibitors of extracellular signal-regulating kinases 1/2 (Erk1/2), p38, Janus kinase (Jnk), and phosphatidylinositol 3-kinase. Gal-9 HMVEC-induced tube formation was reduced by Erk1/2, p38, and Jnk inhibitors, and this was confirmed by siRNA knockdown. In mouse Matrigel plug assays, plugs containing Gal-9 induced significantly higher angiogenesis, which was attenuated by a Jnk inhibitor. Gal-9 also induced MN migration, and there was a marked increase in MN ingress when C57BL/6 mouse knees were injected with Gal-9 compared with the control, pointing to a proinflammatory role for Gal-9. Gal-9 mediates angiogenesis, increases MN migration in vitro, and induces acute inflammatory arthritis in mice, suggesting a novel role for Gal-9 in angiogenesis, joint inflammation, and possibly other inflammatory diseases.

Twitter Demographics

The data shown below were collected from the profile of 1 tweeter who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 21 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 21 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 4 19%
Student > Master 4 19%
Student > Doctoral Student 2 10%
Student > Postgraduate 2 10%
Researcher 2 10%
Other 1 5%
Unknown 6 29%
Readers by discipline Count As %
Biochemistry, Genetics and Molecular Biology 7 33%
Medicine and Dentistry 4 19%
Immunology and Microbiology 1 5%
Nursing and Health Professions 1 5%
Chemistry 1 5%
Other 1 5%
Unknown 6 29%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. 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 13 February 2018.
All research outputs
#11,120,754
of 12,504,607 outputs
Outputs from Arthritis Research & Therapy
#1,897
of 2,054 outputs
Outputs of similar age
#292,628
of 345,234 outputs
Outputs of similar age from Arthritis Research & Therapy
#1
of 1 outputs
Altmetric has tracked 12,504,607 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,054 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.1. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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