Evidence map›Paper›PMID 9005990›Full record

ArticleThe Journal of clinical investigation1997

Deficiency of Src family kinases Fgr and Hck results in activation of erythrocyte K/Cl cotransport.

L De Franceschi, L Fumagalli, O Olivieri, R Corrocher, C A Lowell, G Berton

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical investigation, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

29 citing papers in PubMed, 114 citations in OpenAlex.

  1. Review
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  12. Review
  13. Functions of the Lyn tyrosine kinase in health and disease.Cell communication and signaling : CCS · 2012
    Article
  14. Article
  15. Regulation of K-Cl cotransport in erythrocytes of frog Rana temporaria by commonly used protein kinase and protein phosphatase inhibitors.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2010
    Article
  16. Article
  17. Effects of phorbol 12-myristate 13-acetate on potassium transport in the red blood cells of frog Rana temporaria.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2009
    Article
  18. Article
  19. Article
  20. Regulation of K-Cl cotransport by protein phosphatase 1alpha in mouse erythrocytes.Pflugers Archiv : European journal of physiology · 2006
    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

6 authors at 2 institutions in 2 countries.

L De FranceschiInstitute of Internal Medicine, University of Verona, Italy.
L Fumagalli
O Olivieri
R Corrocher
C A Lowell
G Berton
University of Verona · ITUniversity of California, San Francisco · US

Funding

NIDDK NIH HHS DK-50627
6 · The paper itself

Abstract

Src-family kinases play a central role in regulation of hematopoietic cell functions. We found that mouse erythrocytes express the Src-family kinases Fgr and Hck, as well as Lyn. To directly test whether Fgr and Hck play any role in erythrocyte function, we analyzed red cells isolated from fgr-/-, hck-/-, and fgr-/- hck-/- knock-out mice. Mean corpuscular hemoglobin concentration and median density are increased, while K content is decreased, in fgr-/- hck-/- double-mutant erythrocytes compared with wild-type, fgr-/-, or hck-/- erythrocytes. Na/K pump and Na/K/Cl cotransport were not altered, but K/Cl cotransport activity was significantly and substantially higher (approximately three-fold) in fgr-/- hck-/- double-mutant erythrocytes. This enhanced K/Cl cotransport activity did not depend on cell age. In fact, in response to bleeding, K/Cl cotransport activity increased in parallel with reticulocytosis in wild-type erythrocytes, while abnormal K/Cl cotransport did not change as a consequence of reticulocytosis in fgr-/- hck-/- double-mutant erythrocytes. Okadaic acid, an inhibitor of a phosphatase that has been implicated in activation of the K/Cl cotransporter, inhibited K/Cl cotransport in wild-type and fgr-/- hck-/- double-mutant erythrocytes to a comparable extent. In contrast, staurosporine, an inhibitor of a kinase that has been suggested to negatively regulate this same phosphatase enhanced K/Cl cotransport in wild-type but not in fgr-/- hck-/- double-mutant erythrocytes. On the basis of these findings, we propose that Fgr and Hck are the kinases involved in the negative regulation of the K/Cl cotransporter-activating phosphatase. Abnormality of erythrocyte K/Cl cotransport in fgr-/- hck-/- double-mutant animals represents the first demonstration that Src-family kinases may be involved in regulation of membrane transport.

Indexed as

SymportersAnimalsBiological TransportCarrier ProteinsCationsChloridesErythrocytesFemaleIon PumpsK Cl- CotransportersMaleMiceMice, KnockoutModels, BiologicalPotassiumProtein-Tyrosine KinasesCarrier ProteinsCationsChloridesHck protein, mouseIon PumpsK Cl- CotransportersPotassiumProtein-Tyrosine KinasesProto-Oncogene Proteinsproto-oncogene proteins c-fgrProto-Oncogene Proteins c-hckSodium-Potassium-Chloride Symporterssrc-Family KinasesSymporters

Identifiers

PMID9005990
PMCPMC507789
OpenAlexW2056426987

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.