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11.06.2018 | Original Article | Ausgabe 6/2018

Clinical and Experimental Nephrology 6/2018

Effect of essential amino acid кetoanalogues and protein restriction diet on morphogenetic proteins (FGF-23 and Кlotho) in 3b–4 stages chronic кidney disease patients: a randomized pilot study

Zeitschrift:
Clinical and Experimental Nephrology > Ausgabe 6/2018
Autoren:
Lyudmila Milovanova, Victor Fomin, Sergey Moiseev, Marina Taranova, Yury Milovanov, Lidia Lysenko (Kozlovskaya), Vasiliy Kozlov, Elena Kozevnikova, Svetlana Milovanova, Marina Lebedeva, Vladimir Reshetnikov
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s10157-018-1591-1) contains supplementary material, which is available to authorized users.

Abstract

Background

A low protein diet (LPD) with essential amino acid ketoanalogue supplementation (KA) may contribute in improving of chronic kidney disease (CKD), while the exact mechanisms of KA’s effect are not established yet. We have conducted a prospective, randomized, controlled comparative study of LPD + KA and LPD alone in relation to serum Klotho, FGF-23 levels in CKD patients.

Methods

79 non-diabetic CKD 3b–4 stage patients, compliant with LPD diet (0.6 g/kg of body weight/day), had been selected. The patients were randomized into two groups. The first group (42 patients) received LPD + КA. The second group (37 patients) continued the LРD alone. In addition to routine tests, serum Klotho, FGF-23 levels, as well as bioimpedance analysis, sphygmography (stiffness (augmentation) indices (AI), central (aortal) blood pressure) with a «SphygmaCor» device; echocardiography (valvular calcification score (VCS) and LVMMI), were performed.

Results

There were body mass indices’ decrease (p = 0.046), including muscle body mass in men (p = 0.027) and woman (p = 0.044) in the LPD group to the end of study (14th month). In addition, lower FGF-23 (p = 0.029), and higher sKlotho (p = 0.037) were detected in the LPD + KA group compared to the LPD one. The increase in AI (p = 0.034), VCS (p = 0.048), and LVMMI (p = 0.023) was detected more often in the LPD group at the end of study.

Conclusion

LPD + KA provides support for nutrition status and contributes to more efficient correction of FGF-23 and Klotho abnormalities that may result in cardiovascular calcification and cardiac remodeling decreasing in CKD. At the same time, a prolonged LPD alone may lead to malnutrition.

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