Evidence map›Paper›PMID 29561185›Full record

ArticleAmerican journal of physiology. Renal physiology2018

Differences in renal ammonia metabolism in male and female kidney.

Autumn N Harris, Hyun-Wook Lee, Gunars Osis, Lijuan Fang, Kierstin L Webster, Jill W Verlander, I David Weiner

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in American journal of physiology. Renal physiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
2.9field-weighted citation impact, top 10% 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

40 citing papers in PubMed, 50 citations in OpenAlex.

  1. Sex differences in renal acid-base regulation.Current opinion in nephrology and hypertension · 2026
    Review
  2. Uncoupling proximal tubule ammoniagenesis from bicarbonate generation byAmerican journal of physiology. Renal physiology · 2026
    Article
  3. Article
  4. Article
  5. Testosterone Exposure During Fetal Masculinization Programming Window Determines the Kidney Size in Adult Mice.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  6. WDR72 Is Required for Urinary Acidification and Normal HActa physiologica (Oxford, England) · 2026
    Article
  7. Pendrin is upregulated by corticosterone and participates in its pressor response.American journal of physiology. Renal physiology · 2026
    Article
  8. Sex differences in renal acid-base regulation.American journal of physiology. Renal physiology · 2025
    Article
  9. Lack of a role of NHE4 in renal ammonia metabolism.American journal of physiology. Renal physiology · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. State of knowledge on ammonia handling by the kidney.Pflugers Archiv : European journal of physiology · 2024
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

7 authors at 2 institutions in 1 country.

Autumn N HarrisDivision of Nephrology, Hypertension and Renal Transplantation, University of Florida College of Medicine , Gainesville, Florida.
Hyun-Wook LeeDivision of Nephrology, Hypertension and Renal Transplantation, University of Florida College of Medicine , Gainesville, Florida.
Gunars OsisDivision of Nephrology, Hypertension and Renal Transplantation, University of Florida College of Medicine , Gainesville, Florida.
Lijuan FangDivision of Nephrology, Hypertension and Renal Transplantation, University of Florida College of Medicine , Gainesville, Florida.
Kierstin L WebsterDivision of Nephrology, Hypertension and Renal Transplantation, University of Florida College of Medicine , Gainesville, Florida.
Jill W VerlanderDivision of Nephrology, Hypertension and Renal Transplantation, University of Florida College of Medicine , Gainesville, Florida.ORCID 0000-0002-4096-4897
I David WeinerDivision of Nephrology, Hypertension and Renal Transplantation, University of Florida College of Medicine , Gainesville, Florida.ORCID 0000-0002-0046-0600
University of Florida · USUnited States Department of Veterans Affairs · US

Funding

H/HCO3 transport in the collecting ductR01DK045788 · NIDDK · UNIVERSITY OF FLORIDA · PI WEINER, I. DAVID · 2000 to 2017
$4.4M
Molecular Mechanisms Regulating Ammonia MetabolismR01DK107798 · NIDDK · UNIVERSITY OF FLORIDA · PI WEINER, I. DAVID · 2016 to 2025
$3.2M
REnal TrAIning & reteNtion (RETAIN) ProgramT32DK104721 · NIDDK · UNIVERSITY OF FLORIDA · PI SEGAL, MARK S., WOOD, CHARLES E · 2015 to 2019
$1.6M
NIDDK NIH HHS R01 DK045788NIDDK NIH HHS R01 DK107798NIDDK NIH HHS T32 DK104721
6 · The paper itself

Abstract

Renal ammonia metabolism has a major role in the maintenance of acid-base homeostasis. Sex differences are well recognized as an important biological variable in many aspects of renal function, including fluid and electrolyte metabolism. However, sex differences in renal ammonia metabolism have not been previously reported. Therefore, the purpose of the current study was to investigate sex differences in renal ammonia metabolism. We studied 4-mo-old wild-type C57BL/6 mice fed a normal diet. Despite similar levels of food intake, and, thus, protein intake, which is the primary determinant of endogenous acid production, female mice excreted greater amounts of ammonia, but not titratable acids, than did male mice. This difference in ammonia metabolism was associated with fundamental structural differences between the female and male kidney. In the female mouse kidney, proximal tubules account for a lower percentage of the renal cortical parenchyma compared with the male kidney, whereas collecting ducts account for a greater percentage of the renal parenchyma than in male kidneys. To further investigate the mechanism(s) behind the greater ammonia excretion in female mice, we examined differences in the expression of proteins involved in renal ammonia metabolism and transport. Greater basal ammonia excretion in females was associated with greater expression of PEPCK, glutamine synthetase, NKCC2, Rhbg, and Rhcg than was observed in male mice. We conclude that there are sex differences in basal ammonia metabolism that involve both renal structural differences and differences in expression of proteins involved in ammonia metabolism.

Indexed as

Renal EliminationAmmoniaAnimalsCation Transport ProteinsFemaleGene Expression RegulationGlutamate-Ammonia LigaseGlycoproteinsKidneyMaleMembrane GlycoproteinsMembrane Transport ProteinsMice, Inbred C57BLPhosphoenolpyruvate Carboxykinase (ATP)Sex FactorsSolute Carrier Family 12, Member 1AmmoniaCation Transport ProteinsGlutamate-Ammonia LigaseGlycoproteinsMembrane GlycoproteinsMembrane Transport ProteinsPck2 protein, mousePhosphoenolpyruvate Carboxykinase (ATP)RhBG protein, mouseRhcg protein, mouseSlc12a1 protein, mouseSolute Carrier Family 12, Member 1acid-baseammoniacollecting ductproximal tubulesex differences

Identifiers

PMID29561185
PMCPMC6139524
OpenAlexW2789409336

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.