Abstract
BackgroundThis study aimed to investigate the expression characteristics of ANGPTL8 in patients with primary nephrotic syndrome and its possible correlation with hyperlipidemia and proteinuria.MethodsANGPTL8 levels were determined using an enzyme-linked immunosorbent assay in 133 subjects with PNS and 60 healthy controls.ResultsCompared with healthy controls, subjects with primary nephrotic syndrome had higher levels of serum and urine ANGPTL8 (P < 0.001). In primary nephrotic syndrome patients, serum ANGPTL8 was positively correlated with cholesterol (r = 0.209, P < 0.05) and triglycerides (r = 0.412, P < 0.001), while there was no correlation with 24 hUTP. Urine ANGPTL8 was positively correlated with high-density lipoprotein cholesterol (r = 0.181, P < 0.05) and was significantly negatively correlated with creatinine (r = − 0.323, P < 0.001), eGFR (r = − 0, P < 0.001) and 24 hUTP (r = − 0.268, P = 0.002). Interestingly, the urine ANGPTL8 concentrations in membranous nephropathy and mesangial proliferative glomerulonephritis pathological types were different.ConclusionsSerum and urine ANGPTL8 levels in primary nephrotic syndrome patients were correlated with blood lipid levels and proteinuria, respectively, suggesting that ANGPTL8 may play a role in the development of primary nephrotic syndrome hyperlipidemia and proteinuria.
Highlights
This study aimed to investigate the expression characteristics of ANGPTL8 in patients with primary nephrotic syndrome and its possible correlation with hyperlipidemia and proteinuria
Based on the above findings, here, we investigated the characteristics of serum and urine ANGPTL8 levels in Primary nephrotic syndrome (PNS) patients and further examined their relationship with lipid metabolism parameters and the severity of urinary protein
Urine ANGPTL8 levels were associated with PNS pathological type We investigated the serum and urine ANGPTL8 levels in 78 PNS patients with renal biopsy pathology results, which included 21 minimal change disease (MCD), 8 mesangial proliferative glomerulonephritis (MsPGN), 38 membranous nephropathy (MN) and 11 focal segmental glomerulosclerosis (FSGS) patients
Summary
This study aimed to investigate the expression characteristics of ANGPTL8 in patients with primary nephrotic syndrome and its possible correlation with hyperlipidemia and proteinuria. The typical clinical manifestations of PNS include massive proteinuria, hypoproteinemia, edema and/or hyperlipidemia [1]. Of these, marked proteinuria is the core clinical manifestation, and its severity often parallels the degree of hyperlipidemia [2,3,4]. Members of the angiopoietin-like protein (ANGPTL) family are mainly involved in vascular endothelial genesis and the regulation of lipid metabolism [5, 6]. Serum ANGPTL3 levels were found to be significantly positively correlated with triglyceride and cholesterol levels in patients with nephrotic syndrome [12]
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