Preprint Article Version 1 This version is not peer-reviewed

Dietary Omega-3 PUFA Intake in Patients with Chronic Kidney Disease: The Association with Vitamin D Deficiency, Intima-Media Thickness and Blood Pressure

Version 1 : Received: 30 August 2024 / Approved: 30 August 2024 / Online: 30 August 2024 (15:32:18 CEST)

How to cite: Ristic-Medic, D.; Takic, M.; Pokimica, B.; Terzic, B.; Kojadinovic, M.; Lepic, T.; Radjen, S.; Vucic, V. Dietary Omega-3 PUFA Intake in Patients with Chronic Kidney Disease: The Association with Vitamin D Deficiency, Intima-Media Thickness and Blood Pressure. Preprints 2024, 2024082264. https://doi.org/10.20944/preprints202408.2264.v1 Ristic-Medic, D.; Takic, M.; Pokimica, B.; Terzic, B.; Kojadinovic, M.; Lepic, T.; Radjen, S.; Vucic, V. Dietary Omega-3 PUFA Intake in Patients with Chronic Kidney Disease: The Association with Vitamin D Deficiency, Intima-Media Thickness and Blood Pressure. Preprints 2024, 2024082264. https://doi.org/10.20944/preprints202408.2264.v1

Abstract

Background/Objectives: Patients with chronic kidney disease (CKD) have an increased risk of cardiovascular disease (CVD). Carotid intima-media thickness (C-IMT) is a non-invasive marker of atherosclerosis. Low omega-3 polyunsaturated fatty acids (PUFA) intake and vitamin D deficiency are potential cardiometabolic risk factors in patients with CKD. The aim of this study was to evaluate dietary intake and status of omega-3 PUFA and vitamin D in pre-dialysis and hemodialysis patients and to examine the link of dietary α-linolenic acid (ALA) and fish consumption with blood pressure and C-IMT in CKD patients. Methods: All 77 selected patients (36 pre-dialysis, 41 on hemodialysis) underwent standardized clinical, nutritional, and laboratory assessments. Repeated 24-hour recalls were performed to assess dietary intake. The fatty acid profile was determined by gas-liquid chromatography. Results: Inadequate vitamin D intake and vitamin D status were found in 95% of patients. PUFAs profiles did not differ between hemodialysis and pre-dialysis participants. Dietary intake of ALA was negatively correlated with systolic blood pressure (SBP) (p=0.007), C-IMT (p=0.002), serum CRP (p=0.044), iPTH (p=0.01) and 25(OH)D3 (p=0.006). ALA intake of more than 0.23 g/daily was associated with lower SBP (p=0.001), serum 25(OH)D3 (p=0.004), and C-IMT (p=0.002). Conclusions: This study contributes to a better understanding of the relationship between dietary ALA intake and C-IMT in CKD. The results of this study could emphasize the significant role of the high prevalence of vitamin D deficiency and inadequate omega-3 PUFA intake and status considering CVD health in CKD patients.

Keywords

omega-3; carotid intima-media thickness; chronic kidney disease; cardiovascular risk; hemodialysis

Subject

Medicine and Pharmacology, Dietetics and Nutrition

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