• Bin Yu, Bin Zhang, Ye Shi, Shi-He Shao, Qiu-Wei Wang, Rui-Ping Huang, and Yu-Qi Yang.
• Changzhou Women and Children Health Hospital, Nanjing Medical University, Jiangsu Province, China.
• Arch Med Sci. 2012 May 9; 8 (2): 183191183-91.

IntroductionCharacterization of novel proteins in maternal serum derived from mothers carrying Down syndrome (DS) fetuses.Material And MethodsBased on last comparative proteomic analysis, five significant differences of expressed proteins in serum from four groups have been confirmed by ELISA. DAVID and GeneGo MetaCore were used to bioinformatically analyze candidate protein markers.ResultsThe serum levels of ceruloplasmin (CP) and complement factor B (CFB) were significantly increased in mother carried DS fetuses (346.5 ng/ml and 466.8 ng/ml vs. 248.6 ng/ml and 293.5 ng/ml, p< 0.05). Twenty-nine proteins were mainly categorized into binding, catalytic activity and enzyme regulator activity proteins, and their biological roles were involved in biological regulation, metabolic processes, cellular processes, and response to stimuli. The immune response alternative complement pathway was the most significant GeneGo Pathway related to DS.ConclusionsThese 29 proteins have relations with the development of Down syndrome, especially CP and CFB play more important roles.

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