Evidence map›Paper›PMID 7635969›Full record

ArticleThe Journal of clinical investigation1995

Enhanced G protein activation in immortalized lymphoblasts from patients with essential hypertension.

W Siffert, D Rosskopf, A Moritz, T Wieland, S Kaldenberg-Stasch, N Kettler, K Hartung, S Beckmann, K H Jakobs

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in The Journal of clinical investigation, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed, 3 pooled it
3.9field-weighted citation impact, top 5% 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

31 citing papers in PubMed, 3 syntheses or guidelines pooled it, 180 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Article
  5. Article
  6. Review
  7. Review
  8. Heterogeneity of B Cell Functions in Stroke-Related Risk, Prevention, Injury, and Repair.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2016
    Review
  9. Article
  10. Article
  11. Article
  12. Antibodies in the pathogenesis of hypertension.BioMed research international · 2014
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. The GNB3 C825T polymorphism and depression among subjects with alcohol dependence.Journal of neural transmission (Vienna, Austria : 1996) · 2007
    Article
  18. Update on G-protein polymorphisms in hypertension.Current hypertension reports · 2006
    Review
  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

9 authors at 2 institutions in 1 country.

W SiffertInstitut für Pharmakologie, Universitätsklinikum Essen, Germany.
D Rosskopf
A Moritz
T Wieland
S Kaldenberg-Stasch
N Kettler
K Hartung
S Beckmann
K H Jakobs
Essen University Hospital · DEInstitut für Medizinische Informatik, Biometrie und Epidemiologie · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Epstein-Barr virus-immortalized B lymphoblasts obtained from hypertensive patients with enhanced Na+/H+ exchanger activity (HT cells) proliferate distinctly faster upon serum stimulation than those from normotensive controls with low exchanger activity (NT cells) (Rosskopf, D., E. Frömter, and W. Siffert. 1993. J. Clin. Invest. 92:2553-2559). Stimulation with platelet-activating factor (PAF) as well caused an enhanced proliferation of HT cells. In analyzing possible differences in signal transduction between the immortalized NT and HT lymphoblasts, we observed that cell stimulation with PAF and somatostatin caused a twofold higher increase in [Ca2+]i in HT than in NT cell lines. This difference was completely abrogated by pertussis toxin (PTX) treatment. Furthermore, PAF-stimulated formation of inositol 1,4,5-trisphosphate (IP3) was twofold enhanced in HT cell lines. On the other hand, PAF receptor density and affinity, total cellular phospholipase C activity, expression of PTX-sensitive G proteins, and control binding of the stable GTP analogue, guanosine 5'-[gamma-thio]triphosphate (GTP gamma S), to membrane G proteins were not different in NT and HT cell lines. However, PAF- and mastoparan-stimulated binding of GTP gamma S to G proteins, which was fully PTX-sensitive, was 2.5-fold higher in HT than NT cell lines. These data suggest an enhanced receptor-mediated activation of PTX-sensitive G proteins despite unchanged receptor and G protein expression. Thus, this study not only suggests that enhanced signal transduction and cell proliferation are abnormalities in a certain group of patients with essential hypertension but also explains these findings as a result of an enhanced G protein activation in this common disorder.

Indexed as

Receptors, Cell SurfaceReceptors, G-Protein-CoupledAnimalsBlood Physiological PhenomenaCalciumCattleCell DivisionCell Line, TransformedEnzyme ActivationGTP-Binding ProteinsGuanosine 5'-O-(3-Thiotriphosphate)Herpesvirus 4, HumanHumansHypertensionLymphocytesPertussis ToxinCalciumGTP-Binding ProteinsGuanosine 5'-O-(3-Thiotriphosphate)Pertussis ToxinPhosphatidylinositol Diacylglycerol-LyasePhosphoric Diester HydrolasesPlatelet Activating Factorplatelet activating factor receptorPlatelet Membrane GlycoproteinsReceptors, Cell SurfaceReceptors, G-Protein-CoupledSodium-Hydrogen ExchangersSomatostatinVirulence Factors, Bordetella

Identifiers

PMID7635969
PMCPMC185260
OpenAlexW1991430923

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.