Chronic kidney disease delays VLDL-apoB-100 particle catabolism: potential role of apolipoprotein C-III
| Autor: | Doris Chan, Ashley Irish, P. Hugh R. Barrett, Gerald F. Watts, Esther M.M. Ooi, Dick C. Chan, Gursharan Dogra |
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| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Male
Very low-density lipoprotein medicine.medical_specialty Apolipoprotein B Cholesterol VLDL Blood lipids QD415-436 Biology digestive system Biochemistry lipids chemistry.chemical_compound Endocrinology Insulin resistance Internal medicine insulin resistance medicine Humans Particle Size Intermediate-density lipoprotein Apolipoprotein C-III Cholesterol central adiposity nutritional and metabolic diseases Cell Biology Middle Aged medicine.disease chemistry Apolipoprotein B-100 Chronic Disease biology.protein kinetic analysis Female Kidney Diseases lipids (amino acids peptides and proteins) Patient-Oriented and Epidemiological Research Dyslipidemia |
| Zdroj: | Journal of Lipid Research, Vol 50, Iss 12, Pp 2524-2531 (2009) |
| ISSN: | 0022-2275 |
| Popis: | To determine the relative contribution of obesity and/or insulin resistance (IR) in the development of dyslipidemia in chronic kidney disease (CKD), we investigated the transport of apolipoprotein (apo) B-100 in nonobese, nondiabetic, nonnephrotic CKD subjects and healthy controls (HC). We determined total VLDL, VLDL(1), VLDL(2), intermediate density lipoprotein (IDL), and LDL-apoB-100 using intravenous D3-leucine, GC-MS, and multicompartmental modeling. Plasma apoC-III and apoB-48 were immunoassayed. In this case control study, we report higher plasma triglyceride, IDL-, VLDL-, VLDL(1)-, and VLDL(2)-apoB-100 concentrations in CKD compared with HC (P < 0.05). This was associated with decreased fractional catabolic rates [FCRs (pools/day)] [IDL:CKD 3.4 (1.6) vs. HC 5.0 (3.2), P < 0.0001; VLDL:CKD 4.8 (5.2) vs. HC 7.8 (4.8), P = 0.038; VLDL(1):CKD 10.1 (8.5) vs. HC 29.5 (45.1), P = 0.007; VLDL(2):CKD 5.4 (4.6) vs. HC 10.4 (3.4), P = 0.001] with no difference in production rates. Plasma apoC-III and apoB-48 were significantly higher in CKD (P < 0.001) and both correlated with impaired FCRs of VLDL, VLDL(1), and VLDL(2) apoB-100 (P < 0.05). In CKD, apoC-III concentration was the only independent predictor of clearance defects in VLDL and its subfractions. Moderate CKD in the absence of central adiposity and IR is associated with mild hypertriglyceridemia due to delayed catabolism of triglyceride rich lipoproteins, IDL, and VLDL, without changes in production rate. Altered apoC-III metabolism may contribute to dyslipidemia in CKD, and this requires further investigation. |
| Databáze: | OpenAIRE |
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