title: Oxidative stress in aging: advances in proteomic approaches.
abstract: Aging is a gradual, complex process in which cells, tissues, organs, and the whole organism itself deteriorate in a progressive and irreversible manner that, in the majority of cases, implies pathological conditions that affect the individual's Quality of Life (QOL). Although extensive research efforts in recent years have been made, the anticipation of aging and prophylactic or treatment strategies continue to experience major limitations. In this review, the focus is essentially on the compilation of the advances generated by cellular expression profile analysis through proteomics studies (two-dimensional [2D] electrophoresis and mass spectrometry [MS]), which are currently used as an integral approach to study the aging process. Additionally, the relevance of the oxidative stress factors is discussed. Emphasis is placed on postmitotic tissues, such as neuronal, muscular, and red blood cells, which appear to be those most frequently studied with respect to aging. Additionally, models for the study of aging are discussed in a number of organisms, such as Caenorhabditis elegans, senescence-accelerated probe-8 mice (SAMP8), naked mole-rat (Heterocephalus glaber), and the beagle canine. Proteomic studies in specific tissues and organisms have revealed the extensive involvement of reactive oxygen species (ROS) and oxidative stress in aging.
authors.affiliation: Laboratorio de Desarrollo y Regeneración Neural, Instituto de Neurobiología, Departamento de Biología Celular y Molecular, CUCBA, Universidad de Guadalajara, Camino Ing. R. Padilla Sánchez 2100, Las Agujas, Zapopan, 44600 Jalisco, JAL, Mexico.
authors.forename: Daniel
authors.initials: D
authors.lastname: Ortuño-Sahagún
authors.affiliation: Unitat de Farmacologia i Farmacognòsia Facultat de Farmàcia, Institut de Biomedicina (IBUB), Centros de Investigación Biomédica en Red de Enfermedades Neurodegenerativas (CIBERNED), Universitat de Barcelona, 08028 Barcelona, Spain.
authors.forename: Mercè
authors.initials: M
authors.lastname: Pallàs
authors.affiliation: Departamento de Ciencias Ambientales, Instituto de Neurociencias, CUCBA, Universidad de Guadalajara, 45100 Jalisco, JAL, Mexico ; Departamento de Investigación Básica, Instituto Nacional de Geriatría (INGER), Periférico Sur No. 2767, Colonia San Jerónimo Lídice, Delegacion Magdalena Contreras, 10200 México, DF, Mexico.
authors.forename: Argelia E
authors.initials: AE
authors.lastname: Rojas-Mayorquín
mesh_terms: D000375:Aging / Q000378:metabolism* / Q000473:pathology*; D000818:Animals; D004734:Energy Metabolism; D006801:Humans; D008928:Mitochondria / Q000378:metabolism; D018384:Oxidative Stress; D011499:Protein Processing, Post-Translational; D040901:Proteomics / Q000379:methods*