Title:Differential Proteomic Identification and Bioinformatics Analysis of Femoral
Neck in Elderly Female Patients with Hyperuricaemia
Volume: 19
Issue: 1
Author(s): Yingyi He, Guangming Zhang, Yuyang Huang, Qi Li and Cheng Luo*
Affiliation:
- Department of Joint Surgery, Panyu Central Hospital, Guangzhou 511400, China
Keywords:
Serum uric acid, elderly female, femoral neck, proteomics, PPAR signalling pathway, hyperuricaemia.
Abstract: Background: Serum uric acid (UA) is positively correlated with bone mineral density
(BMD). However, the mechanism by which serum UA affects BMD remains unclear.
Objective: The aim was carried out to search for the functional proteins related to serum UA and femoral
neck BMD to better understand the pathophysiological mechanism of osteoporosis.
Materials and Methods: In this study, patients in the UA group (hyperuricaemia combined with femoral
neck fracture) and the control group (normal uricaemia combined with femoral neck fracture)
were selected according to the inclusion criteria. Total protein was extracted from the femoral
neck of each patient. Fluorescence differential gel electrophoresis was used to separate the total proteins,
and the differentially expressed protein spots were detected by image analysis. After enzyme
digestion, peptide mass fingerprinting and database searches were performed to identify the differentially
expressed proteins. DAVID software and Kyoto Encyclopedia of Genes and Genomes
(KEGG) data were used for enrichment analysis of the screened differential proteins.
Results: After mass spectrometry and database searching, 66 differentially expressed protein spots
were identified between the UA group and the control group. Most differentially expressed proteins
functioned in cytoskeleton formation, energy metabolism, or signal transduction. They were
mainly involved in 50 biological processes, including peroxisome proliferator-activated receptor (PPAR)
signalling and fatty acid metabolism. PPARγ and PLIN1 were subject to Western blotting
analysis detection; results were consistent with the Label-Free result.
Conclusion: Based on an analysis of the biological information, these proteins may be associated
with the incidence and progression of the femoral neck bone tissues of hyperuricaemia patients.