Evidence map›Paper›PMID 23908456›Full record

ReviewClinical journal of the American Society of Nephrology : CJASN2014

Proximal tubule function and response to acidosis.

Norman P Curthoys, Orson W Moe

Open access · bronzeAbstract readReview
In one paragraph

Review in Clinical journal of the American Society of Nephrology : CJASN, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 175 papers.

0numbers the graph read from it
0cells of the map it votes in
175citing papers in PubMed
6.1field-weighted citation impact, top 3% 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

175 citing papers in PubMed, 316 citations in OpenAlex.

  1. Effects of veverimer on serum bicarbonate and physical function in diabetic patients with chronic kidney disease and metabolic acidosis: subgroup analysis from a randomized, controlled trial.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2022
    Trial
  2. Trial
  3. Review
  4. Uncoupling proximal tubule ammoniagenesis from bicarbonate generation byAmerican journal of physiology. Renal physiology · 2026
    Article
  5. Article
  6. Review
  7. Article
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  15. Article
  16. Proximal Tubule-Specific Genetic Deficiency of PPARα Worsens Systemic Lipid and Glucose Metabolism During Fasting.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  17. Review
  18. Article
  19. Functions of Sulfatide in the Nervous, Immune, and Urinary Systems.Advances in experimental medicine and biology · 2026
    Review
  20. Review

115 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Norman P CurthoysDepartment of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, Colorado; and Norman.Curthoys@Colostate.edu orson.moe@utsouthwestern.edu.
Orson W MoeDepartments of Internal Medicine and Physiology, University of Texas Southwestern Medical Center, Dallas, Texas Norman.Curthoys@Colostate.edu orson.moe@utsouthwestern.edu.
Colorado State University · USThe University of Texas Southwestern Medical Center · US

Funding

UT Southwestern O'Brien Kidney Research Core CenterP30DK079328 · NIDDK · UT SOUTHWESTERN MEDICAL CENTER · PI MOE, ORSON W · 2007 to 2021
$16.9M
Pathogenesis of Uric Acid Nephrolithiasis: The Multifaceted Role of Renal LipidsR01DK081423 · NIDDK · UT SOUTHWESTERN MEDICAL CENTER · PI MAALOUF, NAIM M, MOE, ORSON W · 2009 to 2023
$6.1M
Klotho and Phosphate in Chronic Kidney Disease: Pathogenesis and TherapeuticsR01DK091392 · NIDDK · UT SOUTHWESTERN MEDICAL CENTER · PI HU, MING-CHANG, MOE, ORSON W · 2011 to 2021
$3.2M
CONTROL OF RENAL GLUTAMINASE INDUCTION DURING ACIDOSISR01DK037124 · NIDDK · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI CURTHOYS, NORMAN P. · 1987 to 2012
$2.7M
Effect of Prenatal Programming on Renal Tubular TransportR01DK078596 · NIDDK · UT SOUTHWESTERN MEDICAL CENTER · PI BAUM, MICHEL GERARD · 2009 to 2012
$1.3M
NIAID NIH HHS AI041612NIDDK NIH HHS DK078596NIDDK NIH HHS DK-079328NIDDK NIH HHS DK091392NIDDK NIH HHS P30 DK079328NIDDK NIH HHS R01 DK037124NIDDK NIH HHS R01 DK078596NIDDK NIH HHS R01 DK081423NIDDK NIH HHS R01 DK091392
6 · The paper itself

Abstract

The human kidneys produce approximately 160-170 L of ultrafiltrate per day. The proximal tubule contributes to fluid, electrolyte, and nutrient homeostasis by reabsorbing approximately 60%-70% of the water and NaCl, a greater proportion of the NaHCO3, and nearly all of the nutrients in the ultrafiltrate. The proximal tubule is also the site of active solute secretion, hormone production, and many of the metabolic functions of the kidney. This review discusses the transport of NaCl, NaHCO3, glucose, amino acids, and two clinically important anions, citrate and phosphate. NaCl and the accompanying water are reabsorbed in an isotonic fashion. The energy that drives this process is generated largely by the basolateral Na(+)/K(+)-ATPase, which creates an inward negative membrane potential and Na(+)-gradient. Various Na(+)-dependent countertransporters and cotransporters use the energy of this gradient to promote the uptake of HCO3 (-) and various solutes, respectively. A Na(+)-dependent cotransporter mediates the movement of HCO3 (-) across the basolateral membrane, whereas various Na(+)-independent passive transporters accomplish the export of various other solutes. To illustrate its homeostatic feat, the proximal tubule alters its metabolism and transport properties in response to metabolic acidosis. The uptake and catabolism of glutamine and citrate are increased during acidosis, whereas the recovery of phosphate from the ultrafiltrate is decreased. The increased catabolism of glutamine results in increased ammoniagenesis and gluconeogenesis. Excretion of the resulting ammonium ions facilitates the excretion of acid, whereas the combined pathways accomplish the net production of HCO3 (-) ions that are added to the plasma to partially restore acid-base balance.

Indexed as

Acidosis, Renal TubularBiological Transport, ActiveHumansKidney Tubules, ProximalPhosphatesSodium BicarbonateSodium ChloridePhosphatesSodium BicarbonateSodium Chloride

Identifiers

PMID23908456
PMCPMC4152816
OpenAlexW2107290783

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.