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Mast Cells and MCPT4 Chymase Promote Renal Impairment after Partial Ureteral Obstruction

Overview of attention for article published in Frontiers in immunology, May 2017
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Title
Mast Cells and MCPT4 Chymase Promote Renal Impairment after Partial Ureteral Obstruction
Published in
Frontiers in immunology, May 2017
DOI 10.3389/fimmu.2017.00450
Pubmed ID
Authors

Maguelonne Pons, Liza Ali, Walid Beghdadi, Luca Danelli, Marianne Alison, Lydia Celia Madjène, Jessica Calvo, Julien Claver, Shamila Vibhushan, Magnus Åbrink, Gunnar Pejler, Marie-Laurence Poli-Mérol, Michel Peuchmaur, Alaa El Ghoneimi, Ulrich Blank

Abstract

Obstructive nephropathy constitutes a major cause of pediatric renal progressive disease. The mechanisms leading to disease progression are still poorly understood. Kidney fibrotic lesions are reproduced using a model of partial unilateral ureteral obstruction (pUUO) in newborn mice. Based on data showing significant mast cell (MC) infiltration in patients, we investigated the role of MC and murine MCPT4, a MC-released chymase, in pUUO using MC- (W(sh/sh)), MCPT4-deficient (Mcpt4(-/-)), and wild-type (WT) mice. Measurement of kidney length and volume by magnetic resonance imaging (MRI) as well as postmortem kidney weight revealed hypotrophy of operated right kidneys (RKs) and compensatory hypertrophy of left kidneys. Differences between kidneys were major for WT, minimal for W(sh/sh), and intermediate for Mcpt4(-/-) mice. Fibrosis development was focal and increased only in WT-obstructed kidneys. No differences were noticed for local inflammatory responses, but serum CCL2 was significantly higher in WT versus Mcpt4(-/-) and W(sh/sh) mice. Alpha-smooth muscle actin (αSMA) expression, a marker of epithelial-mesenchymal transition (EMT), was high in WT, minimal for W(sh/sh), and intermediate for Mcpt4(-/-) RK. Supernatants of activated MC induced αSMA in co-culture experiments with proximal tubular epithelial cells. Our results support a role of MC in EMT and parenchyma lesions after pUUO involving, at least partly, MCPT4 chymase. They confirm the importance of morphologic impairment evaluation by MRI in pUUO.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 13 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 13 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 4 31%
Professor > Associate Professor 2 15%
Student > Bachelor 1 8%
Student > Ph. D. Student 1 8%
Librarian 1 8%
Other 2 15%
Unknown 2 15%
Readers by discipline Count As %
Biochemistry, Genetics and Molecular Biology 4 31%
Immunology and Microbiology 3 23%
Medicine and Dentistry 2 15%
Unknown 4 31%
Attention Score in Context

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 26 May 2017.
All research outputs
#22,834,739
of 25,461,852 outputs
Outputs from Frontiers in immunology
#27,577
of 31,698 outputs
Outputs of similar age
#284,214
of 324,588 outputs
Outputs of similar age from Frontiers in immunology
#384
of 410 outputs
Altmetric has tracked 25,461,852 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 31,698 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 8.4. This one is in the 1st percentile – i.e., 1% 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 324,588 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 410 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.