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α-1 Antitrypsin Inhibits RANKL-induced Osteoclast Formation and Functions

Overview of attention for article published in Molecular Medicine, March 2017
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Title
α-1 Antitrypsin Inhibits RANKL-induced Osteoclast Formation and Functions
Published in
Molecular Medicine, March 2017
DOI 10.2119/molmed.2016.00170
Pubmed ID
Authors

Mohammad Ahsanul Akbar, David Nardo, Mong-Jen Chen, Ahmed S. Elshikha, Rubina Ahamed, Eslam M. Elsayed, Claire Bigot, L. Shannon Holliday, Sihong Song

Abstract

Osteoporosis is a global public health problem affecting more than 200 million people worldwide. We previously showed that treatment with alpha-1 antitrypsin (AAT), a multifunctional protein with anti-inflammatory properties, mitigated bone loss in an ovariectomized mouse model. However, the underlying mechanisms of the protective effect of AAT on bone tissue are largely unknown. In this study, we investigated the effect of AAT on osteoclast formation and function in vitro. Our results showed that AAT dose-dependently inhibited the formation of RANKL (receptor activator of nuclear factor κB ligand) induced osteoclasts derived from mouse bone marrow macrophages/monocyte (BMM) lineage cells and the murine macrophage cell line, RAW 264.7 cells. In order to elucidate the possible mechanisms underlying this inhibition, we tested the effect of AAT on the gene expression of cell surface molecules, transcription factors, and cytokines associated with osteoclast formation. We showed that AAT inhibited M-CSF (macrophage colony-stimulating factor) induced cell surface RANK expression in osteoclast precursor cells. In addition, AAT inhibited RANKL-induced TNF-α production, cell surface CD9 expression, and dendritic cell-specific transmembrane protein (DC-STAMP) gene expression. Importantly, AAT treatment significantly inhibited osteoclast-associated mineral resorption. Together, these results uncovered new mechanisms for the protective effects of AAT and strongly support the notion that AAT has therapeutic potential for the treatment of osteoporosis.

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X Demographics

The data shown below were collected from the profiles of 2 X users who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 22 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 22 100%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 4 18%
Lecturer 2 9%
Professor > Associate Professor 2 9%
Student > Doctoral Student 1 5%
Professor 1 5%
Other 3 14%
Unknown 9 41%
Readers by discipline Count As %
Medicine and Dentistry 4 18%
Biochemistry, Genetics and Molecular Biology 1 5%
Nursing and Health Professions 1 5%
Immunology and Microbiology 1 5%
Agricultural and Biological Sciences 1 5%
Other 2 9%
Unknown 12 55%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 2. 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 24 March 2017.
All research outputs
#14,331,382
of 22,953,506 outputs
Outputs from Molecular Medicine
#769
of 1,144 outputs
Outputs of similar age
#173,721
of 309,285 outputs
Outputs of similar age from Molecular Medicine
#3
of 3 outputs
Altmetric has tracked 22,953,506 research outputs across all sources so far. This one is in the 35th percentile – i.e., 35% of other outputs scored the same or lower than it.
So far Altmetric has tracked 1,144 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 8.3. This one is in the 31st percentile – i.e., 31% of its peers scored the same or lower than it.
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 309,285 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 41st percentile – i.e., 41% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 3 others from the same source and published within six weeks on either side of this one.