Evidence map›Paper›PMID 19660100›Full record

ArticleRadiation oncology (London, England)2009

Severe hypoxia induces chemo-resistance in clinical cervical tumors through MVP over-expression.

Pedro C Lara, Marta Lloret, Bernardino Clavo, Rosa M Apolinario, Luis Alberto Henríquez-Hernández, Elisa Bordón, Fausto Fontes, Agustín Rey

Open access · goldAbstract read
In one paragraph

Article in Radiation oncology (London, England), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.7field-weighted citation impact, top 14% 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

22 citing papers in PubMed, 45 citations in OpenAlex.

  1. Therapy resistance-related ncRNAs in cervical cancer: biomarkers and therapeutic targets.Daru : journal of Faculty of Pharmacy, Tehran University of Medical Sciences · 2026
    Review
  2. Lung-MAP Next-Generation Sequencing Analysis of Advanced Squamous Cell Lung Cancers (SWOG S1400).Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer · 2024
    Article
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  11. Predictive value of hypoxia in advanced head and neck cancer after treatment with hyperfractionated radio-chemotherapy and hypoxia modification.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2017
    Article
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  14. Radio-induced apoptosis of peripheral blood CD8 T lymphocytes is a novel prognostic factor for survival in cervical carcinoma patients.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2014
    Article
  15. Review
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  17. Plasminogen activator inhibitor-1 (PAI-1) expression in relation to hypoxia and oncoproteins in clinical cervical tumors.Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al] · 2012
    Article
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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

8 authors at 3 institutions in 1 country.

Pedro C LaraRadiation Oncology Department, Hospital Universitario de Gran Canaria Dr, Negrín, Spain. plara@dcc.ulpgc.es
Marta Lloret
Bernardino Clavo
Rosa M Apolinario
Luis Alberto Henríquez-Hernández
Elisa Bordón
Fausto Fontes
Agustín Rey
Canary Institute of Cancer Research · ESHospital Universitario de Gran Canaria Doctor Negrín · ESUniversidad de Las Palmas de Gran Canaria · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Oxygen molecule modulates tumour response to radiotherapy. Higher radiation doses are required under hypoxic conditions to induce cell death. Hypoxia may inhibit the non-homologous end-joining DNA repair through down regulating Ku70/80 expression. Hypoxia induces drug resistance in clinical tumours, although the mechanism is not clearly elucidated. Vaults are ribonucleoprotein particles with a hollow barrel-like structure composed of three proteins: major vault protein (MVP), vault poly(ADP-ribose) polymerase, and telomerase associated protein-1 and small untranslated RNA. Over-expression of MVP has been associated with chemotherapy resistance. Also, it has been related to poor outcome in patients treated with radiotherapy alone. The aim of the present study was to assess the relation of Major Vault Protein expression and tumor hypoxia in clinical cervical tumors. MVP, p53 and angiogenesis, together with tumor oxygenation, were determined in forty-three consecutive patients suffering from localized cervix carcinoma. High MVP expression was related to severe hypoxia compared to low MVP expressing tumors (p = 0.022). Tumors over-expressing MVP also showed increased angiogenesis (p = 0.003). Besides it, in this study we show for the first time that severe tumor hypoxia is associated with high MVP expression in clinical cervical tumors. Up-regulation of MVP by hypoxia is of critical relevance as chemotherapy is currently a standard treatment for those patients. From our results it could be suggested that hypoxia not only induces increased genetic instability, oncogenic properties and metastatization, but through the correlation observed with MVP expression, another pathway of chemo and radiation resistance could be developed.

Indexed as

AdultAgedAged, 80 and overCell HypoxiaDrug Resistance, NeoplasmFemaleGene ExpressionGene Expression RegulationHumansImmunohistochemistryMajor Vault ProteinMiddle AgedNeoplasm StagingNeovascularization, PathologicTumor Suppressor Protein p53Up-RegulationMajor Vault ProteinTumor Suppressor Protein p53Vault Ribonucleoprotein Particles

Identifiers

PMID19660100
PMCPMC2728103
OpenAlexW2097510628

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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.