Evidence map›Paper›PMID 21699784›Full record

ArticleGastroenterology2011

Estrogen regulation of duodenal bicarbonate secretion and sex-specific protection of human duodenum.

Biguang Tuo, Guorong Wen, Jinqi Wei, Xuemei Liu, Xue Wang, Yalin Zhang, Huichao Wu, Xiao Dong, Jimmy Y C Chow, Volker Vallon and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Gastroenterology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
5.3field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 66 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Prediction of duodenal ulcers in children withTranslational pediatrics · 2025
    Article
  4. Article
  5. Article
  6. Genotypic diversity of theJournal of medical microbiology · 2025
    Article
  7. The Role of Estrogen across Multiple Disease Mechanisms.Current issues in molecular biology · 2024
    Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. [Upper gastrointestinal ulcer in children: a clinical analysis of 173 cases].Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2022
    Article
  14. Advances in CaExperimental and therapeutic medicine · 2020
    Review
  15. Article
  16. Review
  17. Review
  18. Review
  19. Melatonin and female hormone secretion in postmenopausal overweight women.International journal of molecular sciences · 2015
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 5 institutions in 2 countries.

Biguang TuoDepartment of Gastroenterology, Affiliated Hospital, Zunyi Medical College, Zunyi, China. tuobiguang@yahoo.com.cn
Guorong Wen
Jinqi Wei
Xuemei Liu
Xue Wang
Yalin Zhang
Huichao Wu
Xiao Dong
Jimmy Y C Chow
Volker Vallon
Hui Dong
Affiliated Hospital of Zunyi Medical College · CNUniversity of California, San Diego · USFifth Affiliated Hospital of Sun Yat-sen University · CNVA San Diego Healthcare System · USZunyi Medical University · CN

Funding

The UCSD Digestive Diseases Research Development CenterR24DK080506 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ECKMANN, LARS · 2008 to 2012
$2.7M
Blood Pressure Regulation by OAT3R01HL094728 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI ERALY, SATISH A, VALLON, VOLKER · 2010 to 2014
$1.9M
NHLBI NIH HHS HL094728NHLBI NIH HHS R01 HL094728NIDDK NIH HHS DK-080506NIDDK NIH HHS R24 DK080506
6 · The paper itself

Abstract

BACKGROUND &

aimsThe reason that women have a lower prevalence of duodenal ulcer is not clear. We investigated whether estrogen regulates human duodenal bicarbonate secretion (DBS) and whether this process accounts for sex differences in the prevalence of duodenal ulcer.

methodsWe performed an epidemiologic study to correlate duodenal ulcer prevalence with sex and age. Proximal DBS was measured from healthy subjects. Estrogen-receptor expression was examined in human duodenal mucosa by immunoblot and immunohistochemical analyses.

resultsAmong women, the prevalence of duodenal ulcer was significantly lower than among men. The reduced prevalence was greatest among premenopausal women (20-49 y), who were 3.91- to 5.09-fold less likely to develop duodenal ulcers than age-matched men; the difference was reduced to 1.32-fold or less among subjects aged 60 years or older. Premenopausal (20-29 y), but not postmenopausal (60-69 y), women had significantly higher basal and acid-stimulated DBS than the age-matched men. Basal and acid-stimulated DBS in premenopausal women (20-29 y) were significantly higher than in postmenopausal women (60-69 y), whereas there were no significant differences in basal or acid-stimulated DBS between men who were aged 20-29 years or 60-69 years. Serum levels of estradiol changed in parallel with basal and acid-stimulated DBS during the physiological menstrual cycle in premenopausal women. 17β-estradiol-stimulated DBS was independent of age or sex. Estrogen receptors α and β were detected on plasma membranes and in the cytosol of human duodenal epithelial cells.

conclusionsEstrogen regulates human DBS, which could reduce the risk for duodenal ulcer in women and contribute to sex differences in the prevalence of duodenal ulcer.

Indexed as

Sex CharacteristicsAdultAgedBicarbonatesChinaDuodenal UlcerDuodenumEstrogen Receptor alphaEstrogen Receptor betaEstrogensFemaleHumansIntestinal MucosaMaleMiddle AgedPostmenopauseBicarbonatesEstrogen Receptor alphaEstrogen Receptor betaEstrogens

Identifiers

PMID21699784
PMCPMC3163800
OpenAlexW2063917595

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.