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1.
J Ren Nutr ; 33(3): 435-442, 2023 05.
Article in English | MEDLINE | ID: mdl-36379387

ABSTRACT

It has been established that the use of a low-protein diet (LPD) in combination with ketoanalogues of essential amino acids (KA) can contribute to cardio and nephroprotection in chronic kidney disease (CKD). Moreover, it has been shown that partial replacement of the animal protein with soy protein (SP) in the diet contributed to more pronounced nephro and cardioprotection in CKD, however, the data, available in the literature, are mainly represented by experimental studies. AIM OF THE STUDY: We conducted a prospective randomized controlled clinical study that compared the effects of 2 types of diets on the main parameters of nephro and cardioprotection in patients with CKD. MATERIALS AND METHODS: The study included 85 CKD 3b-4 stages G3b-4 patients, compliant to LPD (0.6 g of protein/kg of body weight) + KA (1 tablet/5 kg of body weight). 43 patients (Group 1) received LPD with substitution of animal protein with soy (60% SP + 40% of other vegetable proteins) + KA, and 42 patients (control group (Group 2) received conventional LPD (60% animal protein +40% of vegetable protein) + KA, within 12 months. RESULTS: Substitution of animal protein with SP in diet of patients with CKD to a greater extent delayed the decrease in eGFR (-5.9% vs -11.3%, P = .048), the increase in left ventricle hypertrophy (+4.7% vs +12.3%, P = .042), as well as the increase in central systolic blood pressure (+2.6% vs +13.0%, P = .021), augmentation index (+7.6% vs +23.3%, P = .010), slowed down the decrease in lean body mass in males (+0.9% vs -11.2%, P = .017) and females (-1.8% vs -10.3%, P = .024), increase in phosphorus (-10.3% vs +13.0%, P = .029), cholesterol (-10.7% vs -3.4% P = .047) and urea (+6.3% vs +19.6%, P = .035) serum levels. CONCLUSION: The use of LPD with substitution of animal protein with SP + KA provides more pronounced effect on nephro and cardioprotection as well as maintenance of nutritional status, than conventional LPD + KA in patients with CKD 3b-4 stages.


Subject(s)
Renal Insufficiency, Chronic , Soybean Proteins , Male , Female , Animals , Humans , Diet, Protein-Restricted , Amino Acids, Essential , Body Weight
2.
Int Urol Nephrol ; 54(7): 1613-1621, 2022 Jul.
Article in English | MEDLINE | ID: mdl-34718928

ABSTRACT

BACKGROUND: In chronic kidney disease (CKD) cardiovascular remodeling (CVR) is very frequent compared with general population and, as suppose, may be associated with «new¼ renal risk factors. The aim of study was to estimate association of new serum biomarkers (FGF-23, Klotho) and traditional biomarker of cardiac damage-serum Troponin I (sTr-I) with signs of CVR. METHODS: One hundred thirty CKD G1-5D patients without cardiovascular disease (CVD) clinical manifestation were included. We measured serum FGF-23, Klotho and sTr-I. The instrumental methods were: echocardiography, SphygmoCor test [Pulse Wave Velocity (PWV), Central (aortic) Blood Pressure (CBP), Subendocardial Blood Supply (SBS)]. RESULTS: FGF-23 level correlated with: sTr-I (r = 0.512; p < 0.01), eccentric left ventricular hypertrophy, LVH (r = 0.543; p < 0.01), SBS (r = - 0.499; p < 0.05). There were no differences of FGF-23 level in patients with normal and high CBP. Klotho correlated with concentric LVH (r = - 0.451; p < 0.01), PWV (r = - 0.667; p < 0.001), Cardiac Calcification Score, CCS (r = - 0.581; p < 0.01). Multivariate analysis revealed positive independent association of FGF-23 with eccentric LVH (OR = 1.036, 95% CI (1.004-1.068); p = 0.038). Klotho was a negative determinant for concentric LVH (OR = 0.990, 95% CI 0.987-0.994; p < 0.001), increased PWV (OR = 0.984, 95% CI (0.977-0.991); p < 0.001) and CCS (OR = 0.991, 95% CI (0.988-0.995); p < 0.001). In addition, multivariate analysis revealed a relationship between serum Klotho (OR = 0.980, 95% CI (0.964-0.996); p = 0.016), FGF-23 (OR = 3.145, 95% CI (1.020-9.695); p = 0.046) and troponin I level. CONCLUSION: In CKD patients without CVD clinical manifestation increased serum FGF-23 level and decreased Klotho are associated with CVR: FGF-23 with eccentric LVH (independently of CBP), Klotho determinate concentric LVH, PWV and CCS. Moderately elevated sTr-I levels may be a manifestation of FGF-23/Klotho imbalance in CKD.


Subject(s)
Cardiovascular Diseases , Fibroblast Growth Factor-23 , Kidney Failure, Chronic , Klotho Proteins , Renal Insufficiency, Chronic , Biomarkers , Cardiovascular Diseases/etiology , Fibroblast Growth Factor-23/genetics , Glucuronidase , Humans , Hypertrophy, Left Ventricular/etiology , Kidney Failure, Chronic/complications , Klotho Proteins/genetics , Renal Insufficiency, Chronic/complications , Troponin I
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