Evidence map›Paper›PMID 25143453›Full record

ArticleAmerican journal of physiology. Renal physiology2014

Carbonic anhydrase 2 deficiency leads to increased pyelonephritis susceptibility.

David S Hains, Xi Chen, Vijay Saxena, Evan Barr-Beare, Weisi Flemming, Robert Easterling, Brian Becknell, George J Schwartz, Andrew L Schwaderer

Open access · greenAbstract read
In one paragraph

Article in American journal of physiology. Renal physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
1.3field-weighted citation impact, top 21% 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

30 citing papers in PubMed, 42 citations in OpenAlex.

  1. Urinary tract infections in children.Nature reviews. Urology · 2026
    Review
  2. Review
  3. The immune mechanisms of the urinary tract against infections.Frontiers in cellular and infection microbiology · 2025
    Review
  4. Effects of pH on the Pathogenicity ofInternational journal of molecular sciences · 2024
    Article
  5. Article
  6. Intercalated cell function, kidney innate immunity, and urinary tract infections.Pflugers Archiv : European journal of physiology · 2024
    Review
  7. Generation ofAmerican journal of physiology. Renal physiology · 2023
    Article
  8. Uropathogen and host responses in pyelonephritis.Nature reviews. Nephrology · 2023
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Innate immunity and urinary tract infection.Pediatric nephrology (Berlin, Germany) · 2020
    Review
  18. Article
  19. Acidosis induces antimicrobial peptide expression and resistance to uropathogenicAmerican journal of physiology. Renal physiology · 2020
    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

9 authors at 4 institutions in 1 country.

David S HainsDivision of Nephrology, Le Bonheur Children's Hospital, Memphis, Tennessee;
Xi ChenDivision of Nephrology, Le Bonheur Children's Hospital, Memphis, Tennessee; Center for Clinical and Translational Medicine, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio;
Vijay SaxenaCenter for Clinical and Translational Medicine, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio;
Evan Barr-BeareCenter for Clinical and Translational Medicine, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio;
Weisi FlemmingCenter for Clinical and Translational Medicine, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio;
Robert EasterlingCenter for Clinical and Translational Medicine, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio;
Brian BecknellCenter for Clinical and Translational Medicine, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Division of Nephrology, Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, The Ohio State University, Columbus, Ohio;
George J SchwartzDepartment of Pediatrics, The University of Rochester, Rochester, New York.
Andrew L SchwadererCenter for Clinical and Translational Medicine, The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; Division of Nephrology, Nationwide Children's Hospital, Columbus, Ohio; Department of Pediatrics, The Ohio State University, Columbus, Ohio; Schwaderer.5@osu.edu.
Nationwide Children's Hospital · USLe Bonheur Children's Hospital · USThe Ohio State University · USUniversity of Rochester · US

Funding

BICARBONATE TRANSPORT BY THE MATURING RENAL TUBULER01DK050603 · NIDDK · UNIVERSITY OF ROCHESTER · PI SCHWARTZ, GEORGE J · 1995 to 2014
$4.8M
Genetic Variations and Development of Vesicoureteral Reflux and SequelaeRC4DK090937 · NIDDK · RESEARCH INST NATIONWIDE CHILDREN'S HOSP · PI HAINS, DAVID SULLIVAN, SCHWADERER, ANDREW LAWRENCE · 2010 to 2010
$1.5M
NIDDK NIH HHS 1-RC4-DK-090937-01NIDDK NIH HHS DK-050603
6 · The paper itself

Abstract

Carbonic anhydrase 2 regulates acid-base homeostasis, and recent findings have indicated a correlation between cellular control of acid-base status and the innate defense of the kidney. Mice deficient in carbonic anhydrase 2 (Car2(-/-) mice) have metabolic acidosis, impaired urine acidification, and are deficient in normal intercalated cells. The objective of the present study was to evaluate the biological consequences of carbonic anhydrase 2 deficiency in a murine model of pyelonephritis. Infection susceptibility and transcription of bacterial response components in Car2(-/-) mice were compared with wild-type littermate controls. Car2(-/-) mice had increased kidney bacterial burdens along with decreased renal bacterial clearance after inoculation compared with wild-type mice. Standardization of the urine pH and serum HCO(3)(-) levels did not substantially alter kidney infection susceptibility between wild-type and Car2(-/-) mice; thus, factors other than acid-base status are responsible. Car2(-/-) mice had significantly increased neutrophil-gelatinase-associated lipocalin mRNA and protein and expression at baseline and a marked decreased ability to upregulate key bacterial response genes during pyelonephritis. Our findings provide in vivo evidence that supports a role for carbonic anhydrase 2 and intercalated cells in promoting renal bacterial clearance. Decreased carbonic anhydrase expression results in increased antimicrobial peptide production by cells other than renal intercalated cells, which is not sufficient to prevent infection after a bacterial challenge.

Indexed as

Acidosis, Renal TubularAnimalsBicarbonatesCarbonic Anhydrase IICarbonic AnhydrasesEnzyme-Linked Immunosorbent AssayFemaleHydrogen-Ion ConcentrationImmunity, InnateKidneyLipocalinsMice, Inbred C57BLOsteopetrosisPhenotypePolymerase Chain ReactionPyelonephritisBicarbonatesCarbonic Anhydrase IICarbonic AnhydrasesLipocalinsacid-baseinflammationintercalated cellsurinary tract infection

Identifiers

PMID25143453
PMCPMC4187042
OpenAlexW2041819961

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.