title: Proteomic analysis of retinopathy-related plasma biomarkers in diabetic patients.
abstract: Diabetic retinopathy occurs in approximately 25% of patients with type 1 or type 2 diabetes; the disease can cause poor vision and even blindness because high glucose levels weaken retinal capillaries, causing leakage of blood into surrounding areas. We adopted a proteomics-based approach using 2D-DIGE and MALDI-TOF/TOF MS to compare the differential plasma proteome between diabetic retinopathy with significant retinopathy occurrence within 5years after diagnosis of diabetes, and diabetic non-retinopathy without diagnosed retinopathy for more than 10years after diagnosis of diabetes. We identified 77 plasma proteins, which represent 28 unique gene products. These proteins mainly have inflammatory response and coagulation roles. Our approach identified several potential diabetic retinopathy biomarkers including afamin and the protein arginine N-methyltransferase 5, which may be associated with the progression and development of diabetes. In conclusion, we report a comprehensive patient-based plasma proteomic approach to the identification of potential plasma biomarkers for diabetic retinopathy screening and detection.
authors.affiliation: Division of Endocrinology and Metabolism, Department of Internal Medicine, Chiayi Christian Hospital, Chiayi, Taiwan.
authors.forename: Chieh-Hsiang
authors.initials: CH
authors.lastname: Lu
authors.forename: Szu-Ting
authors.initials: ST
authors.lastname: Lin
authors.forename: Hsiu-Chuan
authors.initials: HC
authors.lastname: Chou
authors.forename: Ying-Ray
authors.initials: YR
authors.lastname: Lee
authors.forename: Hong-Lin
authors.initials: HL
authors.lastname: Chan
mesh_terms: D015415:Biomarkers / Q000097:blood; D002352:Carrier Proteins / Q000097:blood*; D003930:Diabetic Retinopathy / Q000097:blood* / Q000175:diagnosis*; D005260:Female; D006023:Glycoproteins / Q000097:blood*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011484:Protein-Arginine N-Methyltransferases / Q000097:blood*; D020543:Proteome / Q000032:analysis / Q000378:metabolism*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012709:Serum Albumin; D000075462:Serum Albumin, Human
chemical_list: C088246:AFM protein, human; D015415:Biomarkers; D002352:Carrier Proteins; D006023:Glycoproteins; D020543:Proteome; D012709:Serum Albumin; D011484:Protein-Arginine N-Methyltransferases; D000075462:Serum Albumin, Human