Evidence map›Paper›PMID 25925252›Full record

ArticleAmerican journal of physiology. Renal physiology2015

Effect of dietary protein restriction on renal ammonia metabolism.

Hyun-Wook Lee, Gunars Osis, Mary E Handlogten, Hui Guo, Jill W Verlander, I David Weiner

Abstract read
In one paragraph

Article in American journal of physiology. Renal physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.7field-weighted citation impact, top 11% 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

24 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Dietary regulation in health and disease.Signal transduction and targeted therapy · 2022
    Review
  6. Review
  7. Review
  8. Review
  9. NBCe1-A is required for the renal ammonia and KAmerican journal of physiology. Renal physiology · 2020
    Article
  10. Article
  11. Regulation of renal NaDC1 expression and citrate excretion by NBCe1-A.American journal of physiology. Renal physiology · 2019
    Article
  12. Review
  13. Review
  14. Expression of the B splice variant of NBCe1 (SLC4A4) in the mouse kidney.American journal of physiology. Renal physiology · 2018
    Article
  15. Mechanism of Hyperkalemia-Induced Metabolic Acidosis.Journal of the American Society of Nephrology : JASN · 2018
    Article
  16. Article
  17. A Handheld, Colorimetric Optoelectronic Dynamics Analyzer for Measuring Total Ammonia of Biological Samples.IEEE journal of translational engineering in health and medicine · 2018
    Article
  18. Article
  19. Review
  20. Review
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 2 institutions in 2 countries.

Hyun-Wook LeeDivision of Nephrology, Hypertension and Transplantation, University of Florida College of Medicine, Gainesville, Florida.
Gunars OsisDivision of Nephrology, Hypertension and Transplantation, University of Florida College of Medicine, Gainesville, Florida.
Mary E HandlogtenDivision of Nephrology, Hypertension and Transplantation, University of Florida College of Medicine, Gainesville, Florida.
Hui GuoDivision of Nephrology, Second Hospital of Shanxi Medical University, Yaiyuan, Shanxi, Peoples Republic of China; and.
Jill W VerlanderDivision of Nephrology, Hypertension and Transplantation, University of Florida College of Medicine, Gainesville, Florida.
I David WeinerDivision of Nephrology, Hypertension and Transplantation, University of Florida College of Medicine, Gainesville, Florida, Nephrology and Hypertension Section, Medical Service, North Florida/South Georgia Veterans Health System, Gainesville, Florida david.weiner@medicine.ufl.edu.ORCID http://orcid.org/0000-0002-0046-0600
University of Florida · USShanxi Medical University · CN

Funding

H/HCO3 transport in the collecting ductR01DK045788 · NIDDK · UNIVERSITY OF FLORIDA · PI WEINER, I. DAVID · 2000 to 2017
$4.4M
Molecular mechanisms of ammonia metabolismI01BX000818 · VA · VETERANS HEALTH ADMINISTRATION · PI WEINER, I. DAVID · 2011 to 2014
–
BLRD VA I01 BX000818NIDDK NIH HHS R01 DK045788NIDDK NIH HHS R01-DK-045788
6 · The paper itself

Abstract

Dietary protein restriction has multiple benefits in kidney disease. Because protein intake is a major determinant of endogenous acid production, it is important that net acid excretion change in parallel during protein restriction. Ammonia is the primary component of net acid excretion, and inappropriate ammonia excretion can lead to negative nitrogen balance. Accordingly, we examined ammonia excretion in response to protein restriction and then we determined the molecular mechanism of the changes observed. Wild-type C57Bl/6 mice fed a 20% protein diet and then changed to 6% protein developed an 85% reduction in ammonia excretion within 2 days, which persisted during a 10-day study. The expression of multiple proteins involved in renal ammonia metabolism was altered, including the ammonia-generating enzymes phosphate-dependent glutaminase (PDG) and phosphoenolpyruvate carboxykinase (PEPCK) and the ammonia-metabolizing enzyme glutamine synthetase. Rhbg, an ammonia transporter, increased in expression in the inner stripe of outer medullary collecting duct intercalated cell (OMCDis-IC). However, collecting duct-specific Rhbg deletion did not alter the response to protein restriction. Rhcg deletion did not alter ammonia excretion in response to dietary protein restriction. These results indicate 1) dietary protein restriction decreases renal ammonia excretion through coordinated regulation of multiple components of ammonia metabolism; 2) increased Rhbg expression in the OMCDis-IC may indicate a biological role in addition to ammonia transport; and 3) Rhcg expression is not necessary to decrease ammonia excretion during dietary protein restriction.

Indexed as

Diet, Protein-RestrictedAmmoniaAnimalsBiological TransportDietary ProteinsGlutamate-Ammonia LigaseKidney Tubules, CollectingMembrane GlycoproteinsMembrane Transport ProteinsMice, Inbred C57BLAmmoniaDietary ProteinsGlutamate-Ammonia LigaseMembrane GlycoproteinsMembrane Transport Proteinsacid baseammoniacollecting ductprotein restrictionproximal tubule

Identifiers

PMID25925252
PMCPMC4469882
OpenAlexW2132208557

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.