Evidence map›Paper›PMID 34678656›Full record

ArticleRedox biology2021

Estrogen inhibits renal Na-Pi Co-transporters and improves klotho deficiency-induced acute heart failure.

Kai Chen, Zhongjie Sun

Open access · goldAbstract read
In one paragraph

Article in Redox biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

17 citing papers in PubMed, 28 citations in OpenAlex.

  1. Fibulin 2 Deficiency Drives Epigenetic Hypertension.Hypertension (Dallas, Tex. : 1979) · 2026
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  14. In Vivo Cardiac-specific Expression of Adenylyl Cyclase 4 Gene Protects against Klotho Deficiency-induced Heart Failure.Translational research : the journal of laboratory and clinical medicine · 2022
    Article
  15. Stem cell therapy for pulmonary arterial hypertension: An update.The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation · 2022
    Review
  16. Article
  17. Article
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

2 authors at 1 institution in 1 country.

Kai ChenDepartment of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38163, USA.
Zhongjie SunDepartment of Physiology, College of Medicine, University of Tennessee Health Science Center, Memphis, TN, 38163, USA. Electronic address: Zsun10@uthsc.edu.
University of Tennessee Health Science Center · US

Funding

Investigation into Heart AgingR01AG049780 · NIA · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI SUN, ZHONGJIE · 2016 to 2020
$2.4M
Epigenetic Regulation of Kidney Function and Blood PressureR01AG062375 · NIA · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI SUN, ZHONGJIE · 2019 to 2023
$2.3M
Investigation into Arterial Stiffness and HypertensionR01HL154147 · NHLBI · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI SUN, ZHONGJIE · 2020 to 2023
$2.2M
Molecular Mechanism of Kidney AgingR01DK093403 · NIDDK · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI SUN, ZHONGJIE · 2012 to 2016
$1.6M
NHLBI NIH HHS R01 HL154147NIA NIH HHS R01 AG049780NIA NIH HHS R01 AG062375NIDDK NIH HHS R01 DK093403
6 · The paper itself

Abstract

objective and hypothesisKlotho is an aging-suppressor gene. Mutation of Klotho gene causes hyperphosphatemia and acute heart failure. However, the relationship of hyperphosphatemia and acute heart failure is unclear. We hypothesize that hyperphosphatemia mediates Klotho deficiency-induced acute heart failure and further that therapeutic reduction of hyperphosphatemia prevents acute heart failure in Klotho mutant (KL(-/-)) mice. METHODS AND

resultsA significant elevation of serum phosphorus levels and a large reduction of heart function were found in KL(-/-) mice by six weeks of age. Normalization of serum phosphorus levels by low phosphate diet (LPD) rescued Klotho deficiency-induced heart failure and extended lifespan in male mice. Klotho deficiency impaired cardiac mitochondrial respiratory enzyme function and increased superoxide production, oxidative stress, and cardiac cell apoptosis in male KL(-/-) mice which can be eliminated by LPD. LPD, however, did not rescue hyperphosphatemia or heart failure in female KL(-/-) mice. LPD did not affect estrogen depletion in female KL(-/-) mice. Normalization of serum estrogen levels by treatment with 17β-estradiol prevented hyperphosphatemia and heart failure in female KL(-/-) mice. Mechanistically, treatment with 17β-estradiol rescued hyperphosphatemia via inhibiting renal Na-Pi co-transporter expression. Normalization of serum phosphorus levels by treatment with 17β-estradiol also abolished cardiac mitochondrial respiratory enzyme dysfunction, ROS overproduction, oxidative stress and cardiac cell apoptosis in female KL(-/-) mice.

conclusionKlotho deficiency causes acute heart failure via hyperphosphatemia in male mice which can be prevented by LPD. 17β-estradiol prevents Klotho deficiency-induced hyperphosphatemia and heart failure by eliminating upregulation of renal Na-Pi co-transporter expression in female mice.

Indexed as

Heart FailureSymportersAnimalsEstrogensFemaleGlucuronidaseHeartKidneyMaleMiceEstrogensGlucuronidaseSymportersApoptosisEstrogenheart failureHyperphosphatemiaNa-pi co-transporterOxidative stress

Identifiers

PMID34678656
PMCPMC8577443
OpenAlexW3207566221

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.