Evidence map›Paper›PMID 9736736›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1998

The src homology 2-containing inositol phosphatase (SHIP) is the gatekeeper of mast cell degranulation.

M Huber, C D Helgason, J E Damen, L Liu, R K Humphries, G Krystal

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 103 papers.

0numbers the graph read from it
0cells of the map it votes in
103citing papers in PubMed
5.8field-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

103 citing papers in PubMed, 317 citations in OpenAlex.

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  13. Phosphatidylinositol Kinases and Phosphatases inFrontiers in cellular and infection microbiology · 2019
    Review
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43 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

6 authors at 1 institution in 1 country.

M HuberTerry Fox Laboratory, British Columbia Cancer Agency, Vancouver, BC, Canada V5Z 1L3.
C D Helgason
J E Damen
L Liu
R K Humphries
G Krystal
BC Cancer Agency · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To clarify the role that the src homology 2-containing inositol phosphatase (SHIP) plays in mast cell degranulation, the gene for SHIP was disrupted by homologous recombination in embryonic stem cells. Bone-marrow-derived mast cells from SHIP+/+, +/-, and -/- F2 littermates were compared. SHIP-/- mast cells were found to be far more prone to degranulation, after the crosslinking of IgE preloaded cells, than SHIP+/- or +/+ cells. Intriguingly, IgE alone also stimulated massive degranulation in SHIP-/- but not in +/+ mast cells. This degranulation with IgE alone, which may be due to low levels of IgE aggregates, correlated with a higher and more sustained intracellular calcium level than that observed with SHIP+/+ cells and was dependent upon the entry of extracellular calcium. Immunoprecipitation studies revealed that the addition of IgE alone to normal mast cells stimulates multiple cascades, which are prevented from progressing to degranulation by SHIP. PI 3-kinase inhibitor studies suggested that IgE-induced activation of PI 3-kinase is upstream of the entry of extracellular calcium and that SHIP restricts this entry by hydrolyzing phosphatidylinositol 3,4, 5-trisphosphate. These results show the critical role that SHIP plays in setting the threshold for degranulation and that SHIP directly modulates a "positive-acting" receptor.

Indexed as

AndrostadienesAnimalsCalcimycinCalciumChromonesCytoplasmic GranulesEnzyme ActivationEnzyme InhibitorsFlow CytometryImmunoglobulin EMast CellsMiceMice, KnockoutMorpholinesPhosphatidylinositol-3,4,5-Trisphosphate 5-PhosphatasesPhosphatidylinositol Phosphates2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-oneAndrostadienesCalcimycinCalciumChromonesEnzyme InhibitorsImmunoglobulin EINPPL1 protein, humanMorpholinesphosphatidylinositol 3,4,5-triphosphatePhosphatidylinositol-3,4,5-Trisphosphate 5-PhosphatasesPhosphatidylinositol PhosphatesPhosphoinositide-3 Kinase InhibitorsPhosphoric Monoester HydrolasesPhosphotyrosineReceptors, IgEWortmannin

Identifiers

PMID9736736
PMCPMC21642
OpenAlexW2154161087

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.