Evidence map›Paper›PMID 8573091›Full record

ArticleThe Biochemical journal1996

Spermine suppresses the activation of human neutrophil NADPH oxidase in cell-free and semi-recombinant systems.

K Ogata, N Nishimoto, D J Uhlinger, K Igarashi, M Takeshita, M Tamura

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In one paragraph

Article in The Biochemical journal, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.7field-weighted citation impact, top 30% 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

11 citing papers in PubMed, 29 citations in OpenAlex.

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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 4 institutions in 2 countries.

K OgataDepartment of Biochemistry, Oita Medical University, Japan.
N Nishimoto
D J Uhlinger
K Igarashi
M Takeshita
M Tamura
Ehime University · JPOita University Hospital · JPChiba University · JPEmory University · US

Funding

NEUTROPHIL PLASMA MEMBRANE OXIDATIVE ENZYMESR01AI022809 · NIAID · EMORY UNIVERSITY · PI LAMBETH, J. DAVID · 1986 to 1998
–
NIAID NIH HHS AI 22809
6 · The paper itself

Abstract

Spermine, a cellular polyamine, down-regulates O2- generation in human neutrophils stimulated by receptor-linked agonist [Ogata, Tamura and Takeshita (1992) Biochem. Biophys. Res. Commun. 182, 20-26]. In this study, to elucidate the mechanism for the inhibition, the effect of spermine on cell-free activation of the O2- generating enzyme (NADPH oxidase) was examined. Spermine suppressed the SDS-induced activation of NADPH oxidase in a dose-dependent manner with an IC50 of 18 microM. The inhibition was specific for spermine over its precursor amines, spermidine and putrescine. Spermine did not alter the Km for NADPH or the optimal concentration of SDS for activation. The amine was inhibitory only when added before activation, indicating that it affects the activation process rather than the enzyme's activity. An increased concentration of cytosol partly prevented the inhibition by spermine. In semi-recombinant cell-free system, spermine inhibited the activation of NADPH oxidase as effectively as in the cell-free system (IC50 = 13 microM). Pretreatment of each recombinant cytosolic component with spermine revealed that they (especially p67phox) are sensitive to spermine. These results suggest that spermine interacts with cytosolic component(s) and impairs the assembly of NADPH oxidase.

Indexed as

Cell-Free SystemCytosolEnzyme ActivationHumansKineticsNADH, NADPH OxidoreductasesNADPH OxidasesNeutrophilsRecombinant ProteinsSodium Dodecyl SulfateSpermineNADH, NADPH OxidoreductasesNADPH OxidasesRecombinant ProteinsSodium Dodecyl SulfateSpermine

Identifiers

PMID8573091
PMCPMC1216942
OpenAlexW2374248093

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.