Evidence map›Paper›PMID 20234362›Full record

ArticleBritish journal of cancer2010

Membrane transport proteins in human melanoma: associations with tumour aggressiveness and metastasis.

N Walsh, S Kennedy, A M Larkin, D Tryfonopoulos, A J Eustace, T Mahgoub, C Conway, I Oglesby, D Collins, J Ballot and 5 more

Open access · hybridAbstract read
In one paragraph

Article in British journal of cancer, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

23 citing papers in PubMed, 40 citations in OpenAlex.

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  6. A macrocyclic peptide inhibitor traps MRP1 in a catalytically incompetent conformation.Proceedings of the National Academy of Sciences of the United States of America · 2023
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  16. Enhanced SLC34A2 in breast cancer stem cell-like cells induces chemotherapeutic resistance to doxorubicin via SLC34A2-Bmi1-ABCC5 signaling.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2016
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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

15 authors at 4 institutions in 1 country.

N WalshNational Institute for Cellular Biotechnology, Dublin City University, Dublin 9, Ireland.
S Kennedy
A M Larkin
D Tryfonopoulos
A J Eustace
T Mahgoub
C Conway
I Oglesby
D Collins
J Ballot
W S Ooi
G Gullo
M Clynes
J Crown
L O'Driscoll
Dublin City University · IESt. Vincent's University Hospital · IESports Surgery Clinic · IETrinity College Dublin · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMalignant melanoma, generally described as incurable, is notoriously refractory to chemotherapy. The mechanisms contributing to this have not yet been defined and the contributions of drug efflux pumps, implicated in chemo-resistance of many other cancer types, have not been extensively investigated in melanoma.

methodsIn this study, expression of multi-drug resistant (MDR1/P-gp and MRP-1) proteins was examined, by immunohistochemistry, in archival specimens from 134 melanoma patients. This included 92 primary tumours and 42 metastases.

resultsOn assessing all specimens, MRP-1 and MDR1/P-gp expression was found to be common, with the majority (81%) of melanomas expressing at least one of these efflux pumps. Although there is significant association between expression of these pumps (P=0.007), MRP-1 was found to be the predominant (67% of cases) form detected. chi(2) analysis showed significant associations between expression of MRP-1 and/or MDR1/P-gp and the aggressive nature of this disease specifically increased Breslow's depth, Clark's level and spread to lymph nodes. This association with aggressiveness and spread is further supported by the observation that a significantly higher percentage of metastases, than primary tumours, express MRP-1 (91% vs 57%; P<0.0001) and MDR1/P-gp (74% vs 50%; P=0.010).

conclusionThe predominant expression of these pumps and, in particular, MRP-1 suggests that they may be important contributors to the inherent aggressive and resistant nature of malignant melanoma.

Indexed as

ATP-Binding Cassette, Sub-Family C ProteinsATP Binding Cassette Transporter, Subfamily B, Member 1Drug Resistance, NeoplasmFemaleHumansImmunohistochemistryMaleMelanomaMiddle AgedNeoplasm InvasivenessNeoplasm MetastasisRetrospective StudiesATP-Binding Cassette, Sub-Family C ProteinsATP Binding Cassette Transporter, Subfamily B, Member 1multidrug resistance-associated protein 1

Identifiers

PMID20234362
PMCPMC2853088
OpenAlexW2101085700

What OpenQuestion holds

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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.