Evidence map›Paper›PMID 18942765›Full record

ArticleInflammatory bowel diseases2009

Downregulation of sodium transporters and NHERF proteins in IBD patients and mouse colitis models: potential contributors to IBD-associated diarrhea.

Sean Sullivan, Philip Alex, Themos Dassopoulos, Nicholas C Zachos, Christine Iacobuzio-Donahue, Mark Donowitz, Steven R Brant, Carmen Cuffari, Mary L Harris, Lisa Wu Datta and 3 more

Open access · bronzeAbstract read
In one paragraph

Article in Inflammatory bowel diseases, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

68 citing papers in PubMed, 141 citations in OpenAlex.

  1. Review
  2. Article
  3. Ion transport and epithelial barrier dysfunction in experimental models of ulcerative colitis.American journal of physiology. Gastrointestinal and liver physiology · 2025
    Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Intestine-Specific NHE3 Deletion in Adulthood Causes Microbial Dysbiosis.Frontiers in cellular and infection microbiology · 2022
    Article
  12. Metformin Inhibits NaFrontiers in physiology · 2022
    Article
  13. Review
  14. Review
  15. NaJournal of immunology (Baltimore, Md. : 1950) · 2021
    Article
  16. Article
  17. Novel Treatments from Inhibition of the Intestinal Sodium-Hydrogen Exchanger 3.International journal of nephrology and renovascular disease · 2021
    Review
  18. Article
  19. Article
  20. Article

8 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

13 authors at 2 institutions in 2 countries.

Sean SullivanGI Division, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
Philip Alex
Themos Dassopoulos
Nicholas C Zachos
Christine Iacobuzio-Donahue
Mark Donowitz
Steven R Brant
Carmen Cuffari
Mary L Harris
Lisa Wu Datta
Laurie Conklin
Yueping Chen
Xuhang Li
Johns Hopkins University · USJohns Hopkins Medicine · US

Funding

Hopkins Digestive Diseases Research Development CenterR24DK064388 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI DONOWITZ, MARK · 2003 to 2010
$4.6M
Development of Biomarkers for IBD Using Protein ChipsR21DK077064 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI LI, XUHANG · 2007 to 2010
$515k
NHE3 Regulation by Lipid Rafts and Hsc70K01DK062264 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI LI, XUHANG · 2002 to 2004
$364k
NIDDK NIH HHS 5R21DK77064NIDDK NIH HHS K01 DK062264NIDDK NIH HHS K01-DK62264NIDDK NIH HHS R21 DK077064NIDDK NIH HHS R24 DK064388NIDDK NIH HHS R24-DK64388
6 · The paper itself

Abstract

backgroundOne of the most common symptoms among patients with inflammatory bowel disease (IBD) is diarrhea, which is thought to be contributed by changes in electrolyte transport associated with intestinal inflammation. This study was designed to test the hypothesis that intestinal Na(+)-related transporters/channels and their regulatory proteins may be downregulated as a potential contributor to IBD-associated diarrhea.

methodsSDS-PAGE and Western blotting and/or confocal immunomicroscopy were used to examine the expression of Na(+)/H(+)-exchangers 1-3 (NHE1-3), epithelial Na(+) channel (ENaC), Na(+)/K(+)-ATPase, the intracellular Cl(-) channel 5 (ClC-5), and NHE3 regulatory factors (NHERF1,2) in ileal and colonic pinch biopsies from IBD patients and noninflammatory controls, as well as from colonic mucosa of dextran sodium sulfate (DSS)- and TNBS-induced acute murine IBD models.

resultsNHE1,3 (but not NHE2), beta-ENaC, Na(+)/K(+)-ATPase-alpha, ClC-5, and NHERF1 were all downregulated in sigmoid mucosal biopsies from most cases of active UC and/or CD compared to controls. NHE3 was also decreased in ileal mucosal biopsies of active CD, as well as in approximately 50% of sigmoid biopsies from inactive UC or CD. Importantly, similar downregulation of NHE1,3, beta-ENaC, and NHERF1,2 was also observed in the mouse colon (but not ileum) of DSS- and TNBS-induced colitis.

conclusionsIBD-associated diarrhea may be due to a coordinated downregulation of multiple Na(+) transporter and related regulatory proteins, including NHE1,3, Na(+)/K(+)-ATPase, and ENaC, as well as NHERF1,2, and ClC-5, all of which are involved directly or indirectly in intestinal Na(+) absorption.

Indexed as

AdolescentAdultAnimalsChloride ChannelsDiarrheaDown-RegulationFemaleHumansInflammatory Bowel DiseasesMaleMiceMiddle AgedPhosphoproteinsSodium ChannelsSodium-Hydrogen ExchangersSodium-Potassium-Exchanging ATPaseChloride ChannelsPhosphoproteinsSodium Channelssodium-hydrogen exchanger regulatory factorSodium-Hydrogen ExchangersSodium-Potassium-Exchanging ATPase

Identifiers

PMID18942765
PMCPMC2627787
OpenAlexW1997608136

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.