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Abstract Title:

One-Year Conservative Care Using Sodium Bicarbonate Supplementation Is Associated with a Decrease in Electronegative LDL in Chronic Kidney Disease Patients: A Pilot Study.

Abstract Source:

Cardiorenal Med. 2017 Oct ;7(4):334-341. Epub 2017 Aug 17. PMID: 29118772

Abstract Author(s):

Felipe Rizzetto, Denise Mafra, Ana Beatriz Barra, Gisella Pires de Melo, Dulcinéia Saes Parra Abdalla, Maurilo Leite

Article Affiliation:

Felipe Rizzetto

Abstract:

Background: Chronic kidney disease (CKD) patients develop metabolic acidosis when approaching stages 3 and 4, a period in which accelerated atherogenesis may ensue. Studies in vitro show that low pH may increase low-density lipoprotein (LDL) oxidation, suggesting a role for chronic metabolic acidosis in atherosclerosis. The present study attempted to evaluate the effects of conservative care using oral sodium bicarbonate (NaHCO3) supplementation on the electronegative LDL [LDL(-)], a minimally oxidized LDL, plasma levels in CKD patients.

Methods: Thirty-one CKD patients were followed by a multidisciplinary team during 15 months of care in which 1.0 mmol/kg/day oral NaHCO3 supplementation was first given in the third month. Blood samples were collected 3 months before the initiation of oral NaHCO3 supplementation (T1), at the time of the beginning of supplementation (T2), and thereafter, each 4 months (T3, T4 and T5) until month 15 of care. Blood parameters and LDL(-) were measured from these collections.

Results: After 12 months of conservative care, creatinine clearance (MDRD) was kept stable, and serum bicarbonate (HCO3-) increased from 20.5± 2.9 to 22.6 ± 1.1 mM (p<0.003). LDL(-) plasma levels declined from 4.5± 3.3 to 2.1 ± 0.9 U/L (p<0.007) after reaching mean serum HCO3- levels of 22.6± 1.1 mM.

Conclusions: Conservative care using oral NaHCO3 supplementation was able to stabilize renal function and decrease serum levels of LDL(-), a modified proatherogenic lipoprotein, only when mean serum HCO3- levels approached 22 mM. This study constitutes evidence that alkali therapy, in addition to its beneficial effect on renal disease progression, might serve as a preventive strategy to attenuate atherogenesis in CKD patients.

Study Type : Human Study

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