Evidence map›Paper›PMID 20581223›Full record

ArticleFASEB journal : official publication of the Federation of American Societies for Experimental Biology2010

Inhibition of Ca2+-activated Cl- channels by gallotannins as a possible molecular basis for health benefits of red wine and green tea.

Wan Namkung, Jay R Thiagarajah, Puay-Wah Phuan, A S Verkman

Open access · greenAbstract read
In one paragraph

Article in FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 112 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
112citing papers in PubMed, 1 pooled it
6.2field-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

112 citing papers in PubMed, 1 synthesis or guideline pooled it, 195 citations in OpenAlex.

  1. Pooled it
  2. Molecular Mechanisms of Electric Signals Generated at Corneal Wounds.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  3. Article
  4. A pericyte chloride clamp mechanism governs capillary control of cerebral blood flow.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. Review
  14. Inhibition of ANO1 byInternational journal of molecular sciences · 2023
    Article
  15. Article
  16. Review
  17. Review
  18. Role of ANO1 in tumors and tumor immunity.Journal of cancer research and clinical oncology · 2022
    Review
  19. Article
  20. TMEM16A as a potential treatment target for head and neck cancer.Journal of experimental & clinical cancer research : CR · 2022
    Review

52 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

4 authors at 1 institution in 1 country.

Wan NamkungDepartment of Medicine , University of California, San Francisco, CA 94143-0521, USA.
Jay R Thiagarajah
Puay-Wah Phuan
A S Verkman
University of California, San Francisco · US

Funding

SynthesisP30DK072517 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2005 to 2022
$18.1M
Functional Role of Aquaporins in Eye PhysiologyR01EY013574 · NEI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2002 to 2022
$7.6M
MECHANISMS OF WATER TRANSPORT IN RENAL EPITHELIAR37DK035124 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 1999 to 2008
$4.2M
Application of Novel Optical Methods to Cell DynamicsR37EB000415 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2007 to 2016
$4.1M
Role of ASL and Airway Glands in CF Lung DiseaseR01HL073856 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2003 to 2010
$3.1M
Application of Novel Optical Methods to Cell DynamicsR01EB000415 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2002 to 2006
$1.7M
WATER AND NON-ELECTROLYTE TRANSPORT IN RENAL VESICLESR01DK035124 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 1986 to 2014
$1.4M
CFTR inhibitors for therapy of polycystic kidney diseaseRC1DK086125 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI VERKMAN, ALAN S · 2009 to 2010
$989k
NEI NIH HHS EY13574NEI NIH HHS R01 EY013574NHLBI NIH HHS HL73856NHLBI NIH HHS R01 HL073856NIBIB NIH HHS EB00415NIBIB NIH HHS R01 EB000415NIBIB NIH HHS R37 EB000415NIDDK NIH HHS DK35124NIDDK NIH HHS DK72517NIDDK NIH HHS DK86125NIDDK NIH HHS P30 DK072517NIDDK NIH HHS R01 DK035124NIDDK NIH HHS R37 DK035124NIDDK NIH HHS RC1 DK086125
6 · The paper itself

Abstract

TMEM16A was found recently to be a calcium-activated Cl(-) channel (CaCC). CaCCs perform important functions in cell physiology, including regulation of epithelial secretion, cardiac and neuronal excitability, and smooth muscle contraction. CaCC modulators are of potential utility for treatment of hypertension, diarrhea, and cystic fibrosis. Screening of drug and natural product collections identified tannic acid as an inhibitor of TMEM16A, with IC(50) ∼ 6 μM and ∼100% inhibition at higher concentrations. Tannic acid inhibited CaCCs in multiple cell types but did not affect CFTR Cl(-) channels. Structure-activity analysis indicated the requirement of gallic or digallic acid substituents on a macromolecular scaffold (gallotannins), as are present in green tea and red wine. Other polyphenolic components of teas and wines, including epicatechin, catechin, and malvidin-3-glucoside, poorly inhibited CaCCs. Remarkably, a 1000-fold dilution of red wine and 100-fold dilution of green tea inhibited CaCCs by >50%. Tannic acid, red wine, and green tea inhibited arterial smooth muscle contraction and intestinal Cl(-) secretion. Gallotannins are thus potent CaCC inhibitors whose biological activity provides a potential molecular basis for the cardioprotective and antisecretory benefits of red wine and green tea.

Indexed as

WineAnimalsAnoctamin-1Cell LineChloride ChannelsHumansHydrolyzable TanninsInhibitory Concentration 50Membrane ProteinsMolecular StructureMuscle ContractionMuscle, SmoothNeoplasm ProteinsRatsStructure-Activity RelationshipTanninsANO1 protein, humanAnoctamin-1Chloride ChannelsHydrolyzable TanninsMembrane ProteinsNeoplasm ProteinsTanninsTea

Identifiers

PMID20581223
PMCPMC2974422
OpenAlexW2008964034

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.