Evidence map›Paper›PMID 3395658›Full record

ArticleBiophysical journal1988

Capacitance measurements. An analysis of the phase detector technique used to study exocytosis and endocytosis.

C Joshi, J M Fernandez

Abstract read
In one paragraph

Article in Biophysical journal, 1988. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 60 papers.

0numbers the graph read from it
0cells of the map it votes in
60citing papers in PubMed
–field-weighted citation impact
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

60 citing papers in PubMed.

  1. Article
  2. Article
  3. Zf-and-Hsys-based Cm measurement under the whole-cell patch-clamp recording.Pflugers Archiv : European journal of physiology · 2009
    Article
  4. Measurements of membrane patch capacitance using a software-based lock-in system.Pflugers Archiv : European journal of physiology · 2007
    Article
  5. Article
  6. Kinetics of exocytosis is faster in cones than in rods.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2005
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Tyrosine phosphorylation regulates rapid endocytosis in adrenal chromaffin cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 1999
    Article
  13. Article
  14. A current activated on depletion of intracellular Ca2+ stores can regulate exocytosis in adrenal chromaffin cells.The Journal of neuroscience : the official journal of the Society for Neuroscience · 1999
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. 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

2 authors.

C JoshiDepartment of Physiology, University of Pennsylvania, Philadelphia 19104-6085.
J M Fernandez

Funding

STIMULUS-SECRETION COUPLING IN MAST CELLSR01GM038857 · NIGMS · MAYO CLINIC COLL OF MEDICINE, ROCHESTER · PI FERNANDEZ, JULIO M · 1992 to 1997
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STIMULUS-SECRETION COUPLING IN MAST CELLSR29GM038857 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI FERNANDEZ, JULIO M · 1987 to 1991
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NIGMS NIH HHS GM-38857-01
6 · The paper itself

Abstract

We have studied the admittance of patch-clamped mast cells during exocytosis and found that they are adequately described by a four parameter equivalent circuit. On the basis of these measurements, we show that, contrary to current belief, when using a phase sensitive detector, small capacitance changes due to exocytosis or endocytosis should be studied by measuring current 90 degrees out of phase, relative to the component that corresponds to changes in series resistance. We have extended the theory on phase-detectors to include the errors in the estimation of step changes of membrane capacitance. We show that the measured capacitance of a secretory granule can be up to 80% smaller than its true value, during the course of a typical mast cell degranulation. We also describe a software-based phase-detector that simplifies capacitance measurements.

Indexed as

EndocytosisExocytosisModels, BiologicalAnimalsComputer SimulationElectric ConductivityIn Vitro TechniquesMaleMast CellsMathematicsMiceRatsSoftware

Identifiers

PMID3395658
PMCPMC1330269

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.