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Profiling plasma peptides for the identification of potential ageing biomarkers in Chinese Han adults.

ABSTRACT: Advancing age is associated with cardiovascular disease, diabetes mellitus and cancer, and shows significant inter-individual variability. To identify ageing-related biomarkers we performed a proteomic analysis on 1890 Chinese Han individuals, 1136 males and 754 females, aged 18 to 82 years, using weak cation exchange magnetic bead based MALDI-TOF-MS analysis. The study identified 44 peptides which varied in concentration in different age groups. In particular, apolipoprotein A-I (ApoA1) concentration gradually increased between 18 to 50 years of age, the levels of fibrinogen alpha (FGA) decreased over the same age span, while albumin (ALB) was significantly degraded in middle-aged individuals. In addition, the plasma peptide profiles of FGA and four other unidentified proteins were found to be gender-dependent. Plasma proteins such as FGA, ALB and ApoA1 are significantly correlated with age in the Chinese Han population and could be employed as indicative ageing-related biomarkers.

SUBMITTER: Lu J 

PROVIDER: S-EPMC3389038 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature

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Profiling plasma peptides for the identification of potential ageing biomarkers in Chinese Han adults.

Lu Jiapeng J   Huang Yuqing Y   Wang Youxin Y   Li Yan Y   Zhang Yujun Y   Wu Jingjing J   Zhao Feifei F   Meng Shijiao S   Yu Xinwei X   Ma Qingwei Q   Song Manshu M   Chang Naibai N   Bittles Alan H AH   Wang Wei W  

PloS one 20120703 7

Advancing age is associated with cardiovascular disease, diabetes mellitus and cancer, and shows significant inter-individual variability. To identify ageing-related biomarkers we performed a proteomic analysis on 1890 Chinese Han individuals, 1136 males and 754 females, aged 18 to 82 years, using weak cation exchange magnetic bead based MALDI-TOF-MS analysis. The study identified 44 peptides which varied in concentration in different age groups. In particular, apolipoprotein A-I (ApoA1) concent  ...[more]