Evidence map›Paper›PMID 34106526›Full record

ArticleCurrent protocols2021

Electrophysiologic Analysis of Tight Junction Size and Charge Selectivity.

Nitesh Shashikanth, Heather E Rizzo, Pawin Pongkorpsakol, John F Heneghan, Jerrold R Turner

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Current protocols, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.9field-weighted citation impact, top 27% 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

7 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Nitesh ShashikanthLaboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Heather E RizzoLaboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Pawin PongkorpsakolLaboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
John F HeneghanLaboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Jerrold R TurnerLaboratory of Mucosal Barrier Pathobiology, Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Brigham and Women's Hospital · USChulabhorn Hospital · THHarvard University · US

Funding

STRUCTURE-FUNCTION RELATIONSHIPS IN THE ALIMENTARY TRACTP30DK034854 · NIDDK · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI WAYNE I LENCER · 1986 to 2026
$32.4M
ZO-1-MEDIATED PROTEIN INTERACTIONS: REGULATORS AND INTEGRATORS OF DIVERSE EPITHELIAL FUNCTIONS IN HEALTH AND DISEASER01DK061931 · NIDDK · UNIVERSITY OF CHICAGO · PI JERROLD R. TURNER · 2001 to 2026
$15.0M
Therapeutic targeting of protein interactions to reverse MLCK1-mediated intestinal barrier loss and ameliorate disease.R01DK068271 · NIDDK · UNIVERSITY OF CHICAGO · PI JERROLD R. TURNER · 2005 to 2026
$11.3M
Translational Approaches to Develop Drug Therapy for DiarrheaR24DK099803 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI DONOWITZ, MARK · 2014 to 2019
$8.9M
NIDDK NIH HHS P30 DK034854NIDDK NIH HHS R01 DK061931NIDDK NIH HHS R01 DK068271NIDDK NIH HHS R24 DK099803NIH HHS R01DK61931NIH HHS R01DK68271NIH HHS R24DK099803
6 · The paper itself

Abstract

Tight junctions form selectively permeable barriers that limit paracellular flux across epithelial-lined surfaces. Rather than being absolute barriers, tight junctions in many tissues allow ions, water, and other small molecules to cross on the basis of size and charge selectivity via the high-capacity pore pathway. Most probes currently used to assess tight junction permeability exceed the maximum size capacity of the pore pathway. As a result, available analytical tools have generally been limited to measurement of transepithelial electrical resistances. These provide no information regarding size selectivity and, therefore, cannot be used to distinguish between the pore pathway and the leak pathway, a low-capacity route that accommodates larger macromolecules. This article describes use of dilution potential and bi-ionic potential measurements for analysis of tight junction size and charge selectivity within monolayers of cultured epithelial cells. © 2021 Wiley Periodicals LLC. Basic Protocol 1: Culture of MDCK monolayers on semipermeable supports and induction of claudin-2 expression Basic Protocol 2: Configuring voltage/current clamp and other equipment Basic Protocol 3: Measuring dilution and bi-ionic potentials Basic Protocol 4: Calculating ion permeabilities and pore diameter Support Protocol: Preparation of agar bridges and electrophysiology rig setup.

Indexed as

Claudin-2Tight JunctionsCell LineEpithelial CellsPermeabilityClaudin-2barrier functionclaudinion conductancepermeabilitytight junction

Identifiers

PMID34106526
PMCPMC8541820
OpenAlexW3167328076

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.