Evidence map›Paper›PMID 33514941›Full record

ReviewNature reviews. Nephrology2021

Randall's plaque and calcium oxalate stone formation: role for immunity and inflammation.

Saeed R Khan, Benjamin K Canales, Paul R Dominguez-Gutierrez

Abstract readReview
PubMed Publisher
In one paragraph

Review in Nature reviews. Nephrology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 257 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
257citing papers in PubMed, 4 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

257 citing papers in PubMed, 4 syntheses or guidelines pooled it.

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197 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Saeed R KhanDepartment of Pathology, University of Florida, Gainesville, FL, USA. khan@pathology.ufl.edu.ORCID http://orcid.org/0000-0001-6975-5952
Benjamin K CanalesDepartment of Urology, University of Florida, Gainesville, FL, USA.ORCID http://orcid.org/0000-0002-9571-8394
Paul R Dominguez-GutierrezDepartment of Urology, University of Florida, Gainesville, FL, USA.ORCID http://orcid.org/0000-0002-5414-6895

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Idiopathic calcium oxalate (CaOx) stones often develop attached to Randall's plaque present on kidney papillary surfaces. Similar to the plaques formed during vascular calcification, Randall's plaques consist of calcium phosphate crystals mixed with an organic matrix that is rich in proteins, such as inter-α-trypsin inhibitor, as well as lipids, and includes membrane-bound vesicles or exosomes, collagen fibres and other components of the extracellular matrix. Kidney tissue surrounding Randall's plaques is associated with the presence of classically activated, pro-inflammatory macrophages (also termed M1) and downregulation of alternatively activated, anti-inflammatory macrophages (also termed M2). In animal models, crystal deposition in the kidneys has been associated with the production of reactive oxygen species, inflammasome activation and increased expression of molecules implicated in the inflammatory cascade, including osteopontin, matrix Gla protein and fetuin A (also known as α2-HS-glycoprotein). Many of these molecules, including osteopontin and matrix Gla protein, are well known inhibitors of vascular calcification. We propose that conditions of urine supersaturation promote kidney damage by inducing the production of reactive oxygen species and oxidative stress, and that the ensuing inflammatory immune response promotes Randall's plaque initiation and calcium stone formation.

Indexed as

AnimalsCalcium OxalateCalcium PhosphatesHumansImmunityInflammationKidney CalculiKidney MedullaCalcium Oxalatecalcium phosphateCalcium Phosphates

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.