[Study on correlated proteins in the urine of chronic renal failure patients of Chinese medicine damp syndrome based on SELDI-TOF-MS technique].
OBJECTIVE
To investigate the protein markers in the urine of chronic renal failure (CRF) patients of Chinese medicine damp syndrome (CMDS) based on surface-enhanced laser desorption/ionization time of flight mass spectrometry (SELDI-TOF-MS) technique.


METHODS
The urine was sampled from 90 CRF patients of CMDS and 60 CRF patients of non-CMDS. Then the proteomics of the urine was studied by H4 gene chip. The chips were scanned and analyzed using PBS II (a protein chip reader).


RESULTS
(1) Totally 25 differential protein peaks were identified in the e/m range of 1 000-20 000 of the protein atlas of the two groups (P < 0.01). (2) The urine protein predictive model of CFR patients of CMDS was established after bioinformatic analysis. Totally 4 biomarkers consisting of M/Z 8 654.96, M/Z 2 081.65, M/Z 18 667.3, and M/Z 2 242.14 were obtained, which could better classify the samples of CMDS and those of non-CMDS. Its accuracy rate was 84.7%, the sensitivity was 92.2%, and the specificity was 73.3%. (3) Between the CMDS group and the non-CMDS group, 7 kinds of proteins in the urine were possibly identified by SwissProt Database.


CONCLUSIONS
This study had primarily screened the protein markers in the urine of CRF patients of CMDS, and established the predictive model. The protein markers in the urine were identified by database, thus providing certain experimental evidence for clinical typing of CRF patients of CMDS.
Laboratory of Four Diagnostic Information of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai.
Yi-Ming
YM
Hao
Ming-Chao
MC
Hong
Wen-Jing
WJ
Wang
D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007676:Kidney Failure, Chronic / Q000175:diagnosis* / Q000652:urine*; D008297:Male; D008516:Medicine, Chinese Traditional; D008875:Middle Aged; D040081:Protein Array Analysis / Q000379:methods; D040901:Proteomics / Q000379:methods; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods*