Evidence map›Paper›PMID 30920112›Full record

ArticleAging cell2019

Noncoding variations in Cyp24a1 gene are associated with Klotho-mediated aging phenotypes in different strains of mice.

Amit Singh, Anjali Verma, Michelle A Sallin, Florian Lang, Ranjan Sen, Jyoti Misra Sen

Open access · goldAbstract read
In one paragraph

Article in Aging cell, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.9field-weighted citation impact, top 22% of its field
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

8 citing papers in PubMed, 5 citations in OpenAlex.

  1. Article
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  5. Women in immunology: 2020 and beyond.Nature immunology · 2020
    Review
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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

6 authors at 4 institutions in 2 countries.

Amit SinghNational Institute on Aging, National Institutes of Health, Baltimore, Maryland.
Anjali VermaNational Institute on Aging, National Institutes of Health, Baltimore, Maryland.
Michelle A SallinNational Institute on Aging, National Institutes of Health, Baltimore, Maryland.
Florian LangInstitute of Physiology, Eberhard Karls University of Tübingen, Tübingen, Germany.
Ranjan SenNational Institute on Aging, National Institutes of Health, Baltimore, Maryland.
Jyoti Misra SenNational Institute on Aging, National Institutes of Health, Baltimore, Maryland.
National Institutes of Health · USJohns Hopkins Medicine · USNational Institute on Aging · USUniversity of Tübingen · DE

Funding

T cell development in the thymus and age-dependent thymic involutionZIAAG000768 · NIA · NATIONAL INSTITUTE ON AGING · PI EGAN, JOSEPHINE · 2009 to 2025
$4.0M
National Institute on Aging IRP AG000771
6 · The paper itself

Abstract

In mutant mice, reduced levels of Klotho promoted high levels of active vitamin D in the serum. Genetic or dietary manipulations that diminished active vitamin D alleviated aging-related phenotypes caused by Klotho down-regulation. The hypomorphic Klotho [kl/kl] allele that decreases Klotho expression in C3H, BALB/c, 129, and C57BL/6 genetic backgrounds substantially increases 1,25(OH)2D3 levels in the sera of susceptible C3H, BALB/c, and 129, but not C57BL/6 mice. This may be attributed to increased basal expression of Cyp24a1 in C57BL/6 mice, which promotes inactivation of 1,25(OH)2D3. Decreased expression of Cyp24a1 in susceptible strains was associated with genetic alterations in noncoding regions of Cyp24a1 gene, which were strongly reminiscent of super-enhancers that regulate gene expression. These observations suggest that higher basal expression of an enzyme required for catabolizing vitamin D renders B6-kl/kl mice less susceptible to changes in Klotho expression, providing a plausible explanation for the lack of aging phenotypes on C57BL/6 strain.

Indexed as

AgingAnimalsGlucuronidaseKlotho ProteinsMiceMice, Inbred BALB CMice, Inbred C3HMice, Inbred C57BLPhenotypeVitamin D3 24-HydroxylaseCyp24a1 protein, mouseGlucuronidaseKlotho ProteinsVitamin D3 24-Hydroxylaseaginggenetic backgroundklotho-hypomorphic allelevitamin D metabolism

Identifiers

PMID30920112
PMCPMC6516175
OpenAlexW2933144337

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.