PMID- 25343288 OWN - NLM STAT- MEDLINE DCOM- 20141222 LR - 20151119 IS - 1528-7394 (Print) IS - 0098-4108 (Linking) VI - 77 IP - 22-24 DP - 2014 TI - Evaluation of cadmium-induced nephrotoxicity using urinary metabolomic profiles in sprague-dawley male rats. PG - 1384-98 LID - 10.1080/15287394.2014.951755 [doi] AB - The aim of this study was to investigate urinary metabolomic profiles associated with cadmium (Cd)-induced nephrotoxicity and their potential mechanisms. Metabolomic profiles were measured by high-resolution (1)H-nuclear magnetic resonance (NMR) spectroscopy in the urine of rats after oral exposure to CdCl2 (1, 5, or 25 mg/kg) for 6 wk. The spectral data were further analyzed by a multivariate analysis to identify specific urinary metabolites. Urinary excretion levels of protein biomarkers were also measured and CdCl2 accumulated dose-dependently in the kidney. High-dose (25 mg/kg) CdCl2 exposure significantly increased serum blood urea nitrogen (BUN), but serum creatinine (sCr) levels were unchanged. High-dose CdCl2 (25 mg/kg) exposure also significantly elevated protein-based urinary biomarkers including osteopontin, monocyte chemoattractant protein-1 (MCP-1), kidney injury molecules-1 (Kim-1), and selenium-binding protein 1 (SBP1) in rat urine. Under these conditions, six urinary metabolites (citrate, serine, 3-hydroxyisovalerate, 4-hydroxyphenyllactate, dimethylamine, and betaine) were involved in mitochondrial energy metabolism. In addition, a few number of amino acids such as glycine, glutamate, tyrosine, proline, or phenylalanine and carbohydrate (glucose) were altered in urine after CdCl2 exposure. In particular, the metabolites involved in the glutathione biosynthesis pathway, including cysteine, serine, methionine, and glutamate, were markedly decreased compared to the control. Thus, these metabolites are potential biomarkers for detection of Cd-induced nephrotoxicity. Our results further indicate that redox metabolomics pathways may be associated with Cd-mediated chronic kidney injury. These findings provide a biochemical pathway for better understanding of cellular mechanism underlying Cd-induced renal injury in humans. FAU - Lee, Yu Kyung AU - Lee YK AD - a College of Pharmacy, Pusan National University , Busan , Republic of Korea. FAU - Park, Eun Young AU - Park EY FAU - Kim, Shiwon AU - Kim S FAU - Son, Ji Yeon AU - Son JY FAU - Kim, Tae Hyung AU - Kim TH FAU - Kang, Won Gu AU - Kang WG FAU - Jeong, Tae Chun AU - Jeong TC FAU - Kim, Kyu-Bong AU - Kim KB FAU - Kwack, Seung Jun AU - Kwack SJ FAU - Lee, Jaewon AU - Lee J FAU - Kim, Suhkmann AU - Kim S FAU - Lee, Byung-Mu AU - Lee BM FAU - Kim, Hyung Sik AU - Kim HS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Toxicol Environ Health A JT - Journal of toxicology and environmental health. Part A JID - 100960995 RN - 0 (Biomarkers) RN - 0 (Ccl2 protein, rat) RN - 0 (Cell Adhesion Molecules) RN - 0 (Chemokine CCL2) RN - 0 (Havcr1protein, rat) RN - 0 (Selenium-Binding Proteins) RN - 00BH33GNGH (Cadmium) SB - IM MH - Animals MH - Biomarkers/*urine MH - Cadmium/*toxicity MH - Cell Adhesion Molecules/urine MH - Chemokine CCL2/urine MH - Kidney/*drug effects/metabolism MH - Kidney Diseases/chemically induced MH - Magnetic Resonance Spectroscopy MH - Male MH - *Metabolome MH - Multivariate Analysis MH - Principal Component Analysis MH - Rats MH - Rats, Sprague-Dawley MH - Selenium-Binding Proteins/urine EDAT- 2014/10/25 06:00 MHDA- 2014/12/23 06:00 CRDT- 2014/10/25 06:00 PHST- 2014/10/25 06:00 [entrez] PHST- 2014/10/25 06:00 [pubmed] PHST- 2014/12/23 06:00 [medline] AID - 10.1080/15287394.2014.951755 [doi] PST - ppublish SO - J Toxicol Environ Health A. 2014;77(22-24):1384-98. doi: 10.1080/15287394.2014.951755.