Evidence map›Paper›PMID 27169421›Full record

ReviewPediatric nephrology (Berlin, Germany)2017

Roles of renal ammonia metabolism other than in acid-base homeostasis.

I David Weiner

Abstract readReview
In one paragraph

Review in Pediatric nephrology (Berlin, Germany), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 16% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Uncoupling proximal tubule ammoniagenesis from bicarbonate generation byAmerican journal of physiology. Renal physiology · 2026
    Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Testosterone modulates renal ammonia metabolism.American journal of physiology. Renal physiology · 2020
    Article
  9. NBCe1-A is required for the renal ammonia and KAmerican journal of physiology. Renal physiology · 2020
    Article
  10. Article
  11. Article
  12. Differences in renal ammonia metabolism in male and female kidney.American journal of physiology. Renal physiology · 2018
    Article
  13. Mechanism of Hyperkalemia-Induced Metabolic Acidosis.Journal of the American Society of Nephrology : JASN · 2018
    Article
  14. Article
  15. 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

1 author at 1 institution in 1 country.

I David WeinerDivision of Nephrology, Hypertension and Renal Transplantation, University of Florida College of Medicine, PO Box 100224, Gainesville, FL, 32610-0224, USA. David.Weiner@medicine.ufl.edu.
University of Florida · 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
H/HCO3 transport in the collecting ductR56DK045788 · NIDDK · UNIVERSITY OF FLORIDA · PI WEINER, I. DAVID · 2008 to 2008
$205k
Molecular mechanisms of ammonia metabolismI01BX000818 · VA · VETERANS HEALTH ADMINISTRATION · PI WEINER, I. DAVID · 2011 to 2014
–
BLRD VA I01 BX000818Intramural VA VA999999NIDDK NIH HHS R01 DK045788NIDDK NIH HHS R01 DK107798NIDDK NIH HHS R56 DK045788
6 · The paper itself

Abstract

The importance of renal ammonia metabolism in acid-base homeostasis is well known. However, the effects of renal ammonia metabolism other than in acid-base homeostasis are not as widely recognized. First, ammonia differs from almost all other solutes in the urine in that it does not result from arterial delivery. Instead, ammonia is produced by the kidney, and only a portion of the ammonia produced is excreted in the urine, with the remainder returned to the systemic circulation through the renal veins. In normal individuals, systemic ammonia addition is metabolized efficiently by the liver, but in patients with either acute or chronic liver disease, conditions that increase the addition of ammonia of renal origin to the systemic circulation can result in precipitation and/or worsening of hyperammonemia. Second, ammonia appears to serve as an intrarenal paracrine signaling molecule. Hypokalemia increases proximal tubule ammonia production and secretion as well as reabsorption in the thick ascending limb of the loop of Henle, thereby increasing delivery to the renal interstitium and the collecting duct. In the collecting duct, ammonia decreases potassium secretion and stimulates potassium reabsorption, thereby decreasing urinary potassium excretion and enabling feedback correction of the initiating hypokalemia. Finally, the stimulation of renal ammonia metabolism by hypokalemia may contribute to the development of metabolic alkalosis, which in turn can stimulate NaCl reabsorption and contribute to the intravascular volume expansion, increased blood pressure and diuretic resistance that can develop with hypokalemia. The evidence supporting these novel non-acid-base roles of renal ammonia metabolism is discussed in this review.

Indexed as

Renal EliminationAcid-Base EquilibriumAmmoniaHumansHyperammonemiaHypokalemiaKidney Tubules, CollectingKidney Tubules, ProximalLiverLiver CirrhosisPotassiumSodium ChlorideAmmoniaPotassiumSodium ChlorideAmmoniaCollecting ductENaCH-K-ATPaseHyperammonemiaHypokalemiaSignaling

Identifiers

PMID27169421
PMCPMC5107182
OpenAlexW2376738307

What OpenQuestion holds

Textmetadata
LicenceTDM
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.