Metabolomics Study of Metabolic Changes in Renal Cells in Response to High-Glucose Exposure Based on Liquid or Gas Chromatography Coupled With Mass Spectrometry di Liang Wang, Liang Wang, Yan Du, Yan Du, Bing-ju Xu, Xu Deng, Qing-hua Liu, Qiao-qiao Zhong, Chen-xiang Wang, Shuai Ji, Shuai Ji, Meng-zhe Guo, Meng-zhe Guo, Dao-quan Tang, Dao-quan Tang