Evidence map›Paper›PMID 11882685›Full record

ArticleThe Journal of physiology2002

CD59 blocks not only the insertion of C9 into MAC but inhibits ion channel formation by homologous C5b-8 as well as C5b-9.

Imre Farkas, Lajos Baranyi, Yasushige Ishikawa, Noriko Okada, Csaba Bohata, Denes Budai, Atsuo Fukuda, Masaki Imai, Hidechika Okada

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed
0.4field-weighted citation impact, top 44% 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

68 citing papers in PubMed, 126 citations in OpenAlex.

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  20. The Immunogenetics of Autoimmune Blistering Diseases.Advances in experimental medicine and biology · 2022
    Review

8 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

9 authors at 4 institutions in 2 countries.

Imre FarkasDepartment of Molecular Biology, Nagoya City University School of Medicine, Nagoya 467-8601, Japan.
Lajos Baranyi
Yasushige Ishikawa
Noriko Okada
Csaba Bohata
Denes Budai
Atsuo Fukuda
Masaki Imai
Hidechika Okada
Nagoya City University · JPUniversity of Szeged · HUFukushimura Hospital · JPHamamatsu University School of Medicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Activation of the complement system on the cell surface results in the insertion of pore forming membrane attack complexes (MAC, C5b-9). In order to protect themselves from the complement attack, the cells express several regulatory molecules, including the terminal complex regulator CD59 that inhibits assembly of the large MACs by inhibiting the insertion of additional C9 molecules into the C5b-9 complex. Using the whole cell patch clamp method, we were able to measure accumulation of homologous MACs in the membrane of CD59(-) human B-cells, which formed non-selective ion channels with a total conductance of 360 +/- 24 pS as measured at the beginning of the steady-state phase of the inward currents. C5b-8 and small-size MAC (MAC containing only a single C9) can also form ion channels. Nevertheless, in CD59(+) human B-cells in spite of small-size MAC formation, an ion current could not be detected. In addition, restoring CD59 to the membrane of the CD59(-) cells inhibited the serum-evoked inward current. The ion channels formed by the small-size MAC were therefore sealed, indicating that CD59 directly interfered with the pore formation of C5b-8 as well as that of small-size C5b-9. These results offer an explanation as to why CD59-expressing cells are not leaky in spite of a buildup of homologous C5b-8 and small-size MAC. Our experiments also confirmed that ion channel inhibition by CD59 is subject to homologous restriction and that CD59 cannot block the conductivity of MAC when generated by xenogenic (rabbit) serum.

Indexed as

AnimalsAntibodies, MonoclonalB-LymphocytesCD59 AntigensCell LineCell MembraneComplement C9Complement Membrane Attack ComplexComplement System ProteinsFlow CytometryHumansIon ChannelsPatch-Clamp TechniquesRabbitsAntibodies, MonoclonalCD59 Antigenscomplement C5b-8 complexComplement C9Complement Membrane Attack ComplexComplement System ProteinsIon Channels

Identifiers

PMID11882685
PMCPMC2290142
OpenAlexW2011498518

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.