Evidence map›Paper›PMID 30410392›Full record

ArticleBreast cancer (Dove Medical Press)2018

Intracellular aggregated TRPV1 is associated with lower survival in breast cancer patients.

Carlo Lozano, Claudio Córdova, Ivanny Marchant, Rodrigo Zúñiga, Paola Ochova, Ricardo Ramírez-Barrantes, Wilfredo Alejandro González-Arriagada, Belén Rodriguez, Pablo Olivero

Open access · goldAbstract read
In one paragraph

Article in Breast cancer (Dove Medical Press), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 11% 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

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

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  19. A novel strategy for treating cancer: understanding the role of CaExploration of targeted anti-tumor therapy · 2021
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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

9 authors at 3 institutions in 1 country.

Carlo LozanoLaboratorio de Estructura y Función Celular, Escuela de Medicina, Facultad de Medicina, Universidad de Valparaíso, Hontaneda, Valparaíso, Chile, carlo.lburgos@gmail.com; pablo.olivero@uv.cl.
Claudio CórdovaLaboratorio de Estructura y Función Celular, Escuela de Medicina, Facultad de Medicina, Universidad de Valparaíso, Hontaneda, Valparaíso, Chile, carlo.lburgos@gmail.com; pablo.olivero@uv.cl.
Ivanny MarchantLaboratorio de Estructura y Función Celular, Escuela de Medicina, Facultad de Medicina, Universidad de Valparaíso, Hontaneda, Valparaíso, Chile, carlo.lburgos@gmail.com; pablo.olivero@uv.cl.
Rodrigo ZúñigaServicio de Anatomía Patológica, Hospital Carlos van Buren, San Ignacio, Valparaíso, Chile, carlo.lburgos@gmail.com.
Paola OchovaServicio de Anatomía Patológica, Hospital Carlos van Buren, San Ignacio, Valparaíso, Chile, carlo.lburgos@gmail.com.
Ricardo Ramírez-BarrantesEscuela de Tecnologia Medica, Universidad Andres Bello, Quillota, Viña del Mar, Chile.
Wilfredo Alejandro González-ArriagadaCentro Interoperativo en Ciencias Odontológicas y Médicas, Universidad de Valparaíso, Valparaíso, Chile, carlo.lburgos@gmail.com; pablo.olivero@uv.cl.
Belén RodriguezLaboratorio de Estructura y Función Celular, Escuela de Medicina, Facultad de Medicina, Universidad de Valparaíso, Hontaneda, Valparaíso, Chile, carlo.lburgos@gmail.com; pablo.olivero@uv.cl.
Pablo OliveroLaboratorio de Estructura y Función Celular, Escuela de Medicina, Facultad de Medicina, Universidad de Valparaíso, Hontaneda, Valparaíso, Chile, carlo.lburgos@gmail.com; pablo.olivero@uv.cl.
University of Valparaíso · CLHospital Carlos Van Buren · CLUniversidad Andrés Bello · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBreast cancer is a malignant disease that represents an important public health burden. The description of new molecular markers can be important to diagnosis, classification, and treatment. Transient receptor potential vanilloid 1 (TRPV1) polymodal channel is expressed in different neoplastic tissues and cell lines of breast cancer and associated with the regulation of tumor growth, tumor neurogenesis, cancer pain, and malignant progression of cancer. In primary and metastatic breast cancer tumors, TRPV1 is expressed during neoplastic transformation, invasive behavior, and resistance to cytotoxic therapy.

objectiveThe objective of this study was to describe the subcellular distribution of TRPV1 in invasive breast carcinomas and its association with survival.

methodsIn 33 cases of invasive breast carcinomas, we identified immunohistochemical and immunofluorescent expression patterns of TRPV1 compared to healthy breast tissue. We characterized the expression of TRPV1 induced by estrogens in breast cancer cell lines MCF-7 and MDA to establish a model of the TRPV1-estrogen relationship regarding the malignant potential. We examined the association of TRPV1 patterns with patients' survival with the Kaplan-Meyer model, using the log-rank test at 5 years of follow-up. The relation of TRPV1 expression patterns to the St. Gallen breast cancer subtypes was also tested.

resultsBased on immunohistochemical expression pattern of TRPV1, we distinguished two main categories of breast cancer tissue, a "classical category" that exhibited diffuse expression of the channel and a "non-classical category" that expressed the channel in aggregates at the ER/Golgi and/or surrounding these structures. The classical pattern of TRPV1 was associated with a higher survival rate. In breast cancer cell lines, increasing doses of estrogens induced increased TRPV1 expression with nonclassical patterns at higher doses via a mechanism dependent on ER α.

conclusionThe expression and distribution of TRPV1 in invasive breast carcinomas may be considered as a biomarker for prognosis of the disease and a probable therapeutic target.

Indexed as

breast cancerbreast cancer prognosiscapsaicin receptorsimmunohistochemistryvanilloid receptors

Identifiers

PMID30410392
PMCPMC6197232
OpenAlexW2896931982

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.