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26 September 2019 : Clinical Research

Differences in Serum Amino Acid Phenotypes Among Patients with Diabetic Nephropathy, Hypertensive Nephropathy, and Chronic Nephritis

Li Zeng12BEG, Yuan Yu1B, Xi Cai1E, Shuqin Xie1C, Jianwei Chen1B, Ling Zhong1A, Ying Zhang1A*

DOI: 10.12659/MSM.915735

Med Sci Monit 2019; 25:7235-7242

Abstract

BACKGROUND: We assessed levels of circulating amino acids in different etiologies of chronic kidney disease (CKD) and the association of amino acids with risk factors of CKD progression.

MATERIAL AND METHODS: High-performance liquid chromatography-based analysis was used to determine amino acid profiles in patients with diabetic nephropathy (DN, n=20), hypertensive nephropathy (HN, n=26), and chronic nephritis (CN, n=33), and in healthy controls (HC, n=25).

RESULTS: All 3 types of CKD patients displayed decreased serum levels of serine, glycine, GABA, and tryptophan compared with healthy controls. Moreover, serine and tryptophan were positively correlated with glucose in DN cohorts. Total cholesterol was positively correlated with tryptophan levels in the DN cohort and negatively correlated with serine levels in the CN cohort. In the HN cohort, glycine was negatively correlated with triglyceride levels, and systolic blood pressure (SBP) was negatively correlated with GABA levels.

CONCLUSIONS: Patients with different etiologies of CKD have significantly different amino acids profiles, and this indicates specific supplementary nutritional needs in CKD patients.

Keywords: Amino Acids, Diabetic Nephropathies, Glomerulonephritis, Hypertension, Renal, Renal Insufficiency, Chronic

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750