title: Deconvolution analysis for classifying gastric adenocarcinoma patients based on differential scanning calorimetry serum thermograms.
abstract: Recently, differential scanning calorimetry (DSC) has been acknowledged as a novel tool for diagnosing and monitoring several diseases. This highly sensitive technique has been traditionally used to study thermally induced protein folding/unfolding transitions. In previous research papers, DSC profiles from blood samples of patients were analyzed and they exhibited marked differences in the thermal denaturation profile. Thus, we investigated the use of this novel technology in blood serum samples from 25 healthy subjects and 30 patients with gastric adenocarcinoma (GAC) at different stages of tumor development with a new multiparametric approach. The analysis of the calorimetric profiles of blood serum from GAC patients allowed us to discriminate three stages of cancer development (I to III) from those of healthy individuals. After a multiparametric analysis, a classification of blood serum DSC parameters from patients with GAC is proposed. Certain parameters exhibited significant differences (P < 0.05) and allowed the discrimination of healthy subjects/patients from patients at different tumor stages. The results of this work validate DSC as a novel technique for GAC patient classification and staging, and offer new graphical tools and value ranges for the acquired parameters in order to discriminate healthy from diseased subjects with increased disease burden.
authors.affiliation: Institute of Biocomputation and Physics of Complex Systems (BIFI), Joint-Unit IQFR-CSIC-BIFI, University of Zaragoza, Zaragoza, Spain.
authors.forename: Sonia
authors.initials: S
authors.lastname: Vega
authors.affiliation: 1] Instituto Aragonés de Ciencias de la Salud (IACS) [2] IIS Aragón, Zaragoza, Spain [3] Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Spain.
authors.forename: María Asuncion
authors.initials: MA
authors.lastname: Garcia-Gonzalez
authors.affiliation: 1] IIS Aragón, Zaragoza, Spain [2] Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Spain [3] Servicio de Aparato Digestivo. Hospital Clínico Universitario LB, Spain [4] Department of Medicine. University of Zaragoza, Spain.
authors.forename: Angel
authors.initials: A
authors.lastname: Lanas
authors.affiliation: 1] Institute of Biocomputation and Physics of Complex Systems (BIFI), Joint-Unit IQFR-CSIC-BIFI, University of Zaragoza, Zaragoza, Spain [2] Department of Biochemistry and Molecular and Cell Biology, University of Zaragoza, Zaragoza, Spain [3] Fundacion ARAID, Government of Aragon, Zaragoza 50018, Spain.
authors.forename: Adrian
authors.initials: A
authors.lastname: Velazquez-Campoy
authors.affiliation: 1] Institute of Biocomputation and Physics of Complex Systems (BIFI), Joint-Unit IQFR-CSIC-BIFI, University of Zaragoza, Zaragoza, Spain [2] Instituto Aragonés de Ciencias de la Salud (IACS) [3] IIS Aragón, Zaragoza, Spain [4] Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Spain.
authors.forename: Olga
authors.initials: O
authors.lastname: Abian
mesh_terms: D000230:Adenocarcinoma / Q000097:blood* / Q000175:diagnosis*; D015415:Biomarkers; D001798:Blood Proteins / Q000737:chemistry*; D002152:Calorimetry, Differential Scanning; D016022:Case-Control Studies; D006801:Humans; D009367:Neoplasm Staging; D011489:Protein Denaturation; D017510:Protein Folding; D058767:Protein Unfolding; D013030:Spain; D013274:Stomach Neoplasms / Q000097:blood* / Q000175:diagnosis*; D013817:Thermography
chemical_list: D015415:Biomarkers; D001798:Blood Proteins