Glioblastoma multiforme y estudio de la resistencia a la quimioterapia mediada por transportadores ABC / Study of resistance to chemotherapy mediated by ABC transporters in biopsies of glioblastoma multiforme
Rev. méd. Chile
;
139(4): 415-424, abr. 2011. ilus
Article
in Spanish
| LILACS
| ID: lil-597635
ABSTRACT
Background:
Mortality rate is dramatically high in high grade brain tumors. The presence of multiple drug resistance transporters in glioblastoma multiforme, has contributed largely to the poor effcacy of targeted therapy against cancer in the central nervous system.Aim:
To analyze the percentage of survival and mortality of patients with glioblastoma multiforme in a cohort of patients in Chile and to co-rrelate the chemo-resistance of these cells with the expression level of multiple drug resistance transporters. Materials andMethods:
Eighteen biopsies of glioblastoma multiforme were obtained from patients at the Institute of Neurosurgery Dr. Asenjo (INCA). The tumor cells were obtained from primary cultures and the expression and activity of multiple drug resistance transporters was assessed by RT-PCR and immunohistochemistry. Population-based study was performed using the databases of the Department of Neurosurgery of INCA.Results:
The number of patients with glioblastoma multiforme increased between 2007 and 2009, from 3.5 percent to 7.9 percent of total brain tumors. Mortality of these tumors is 90 percent at three years. A high expression and activity of the multiple drugs resistance associated protein 1 (Mrp1) transporter was observed in primary cultures of biopsies.Conclusions:
We propose that Mrp1 activity is responsible for the chemo-resistance of the glioblastoma multiforme and inhibition of this transporter could represent a plausible strategy for the treatment.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Brain Neoplasms
/
Glioblastoma
/
ATP-Binding Cassette Transporters
/
Drug Resistance, Neoplasm
/
Neoplasm Proteins
Type of study:
Etiology study
/
Incidence study
/
Observational study
/
Prognostic study
/
Risk factors
Limits:
Adolescent
/
Adult
/
Aged
/
Child
/
Child, preschool
/
Female
/
Humans
/
Male
Language:
Spanish
Journal:
Rev. méd. Chile
Journal subject:
Medicine
Year:
2011
Type:
Article
/
Project document
Affiliation country:
Chile
Institution/Affiliation country:
Instituto de Neurocirugía Dr. Asenjo/CL
/
Universidad Austral de Chile/CL
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