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1.
Technol Cancer Res Treat ; 19: 1533033820957033, 2020.
Article in English | MEDLINE | ID: mdl-33107395

ABSTRACT

Traditional techniques for cancer diagnosis, such as nuclear magnetic resonance, ultrasound and tissue analysis, require sophisticated devices and highly trained personnel, which are characterized by elevated operation costs. The use of biomarkers has emerged as an alternative for cancer diagnosis, prognosis and prediction because their measurement in tissues or fluids, such as blood, urine or saliva, is characterized by shorter processing times. However, the biomarkers used currently, and the techniques used for their measurement, including ELISA, western-blot, polymerase chain reaction (PCR) or immunohistochemistry, possess low sensitivity and specificity. Therefore, the search for new proteomic, genomic or immunological biomarkers and the development of new noninvasive, easier and cheaper techniques that meet the sensitivity and specificity criteria for the diagnosis, prognosis and prediction of this disease has become a relevant topic. The purpose of this review is to provide an overview about the search for new cancer biomarkers, including the strategies that must be followed to identify them, as well as presenting the latest advances in the development of biosensors that possess a high potential for cancer diagnosis, prognosis and prediction, mainly focusing on their relevance in lung, prostate and breast cancers.


Subject(s)
Biomarkers, Tumor/analysis , Biosensing Techniques/methods , Breast Neoplasms/diagnosis , Early Detection of Cancer/methods , Lung Neoplasms/diagnosis , Prostatic Neoplasms/diagnosis , Breast Neoplasms/mortality , Breast Neoplasms/pathology , Epigenesis, Genetic/genetics , Female , Humans , Lung Neoplasms/mortality , Lung Neoplasms/pathology , Male , Prognosis , Prostatic Neoplasms/mortality , Prostatic Neoplasms/pathology , Proteomics/methods
2.
Materials (Basel) ; 12(24)2019 Dec 10.
Article in English | MEDLINE | ID: mdl-31835506

ABSTRACT

Potassium hexatitanate (PHT) with chemical formula K2Ti6O13 has a tunnel structure formed by TiO2 octahedra sharing edges or corners and with the potassium atoms located in the tunnels. This material has attracted great interest in the areas of photocatalysis, reinforcement of materials, biomaterials, etc. This work summarizes a large number of studies about methods to prepare PHT since particle size can be modified from millimeter to nanometric scale according to the applied method. Likewise, the synthesis method has influenced the material properties as band-gap and the final mechanical performance of composites when the reinforcement is PHT. The knowing of synthesis, properties and applications of PHT is worthwhile for the design of new materials and for the development of new applications taking advantage of their inherent properties.

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