(Pro)renin Receptor Blockade Ameliorates Heart Failure Caused by Chronic Kidney Disease. 2019

Akihiro Yoshida, and Hiromitsu Kanamori, and Genki Naruse, and Shingo Minatoguchi, and Masamitsu Iwasa, and Yoshihisa Yamada, and Atsushi Mikami, and Masanori Kawasaki, and Kazuhiko Nishigaki, and Shinya Minatoguchi
Department of Cardiology, Gifu University Graduate School of Medicine, Gifu, Japan.

BACKGROUND The (pro)renin receptor [(P)RR)] is involved in the activation of local renin-angiotensin system and subsequent development of cardiovascular disease. We investigated the therapeutic effect of a (P)RR blocker, handle-region peptide (HRP), on chronic kidney disease (CKD)-associated heart failure. RESULTS CKD was induced in C57BL/6J mice by means of five-sixths nephrectomy. Eight weeks later, cardiac dysfunction and cardiac dilatation with hypertension developed. Mice were then assigned to 1 of the 3 following groups: vehicle, low-dose (0.01 mg·kg-1·d-1) HRP, or high-dose (0.3 mg·kg-1·d-1) HRP for 4 weeks. High-dose HRP treatment reversed left ventricular dilation and significantly improved cardiac dysfunction with ameliorated hypertension compared with the vehicle. The hearts with high-dose HRP treatment showed significant attenuation of cardiac fibrosis, cardiomyocyte hypertrophy, macrophage infiltration, and oxidative DNA damage. This treatment decreased the myocardial expressions of angiotensin (Ang) II, Ang II type 1 receptor, transforming growth factor β1, extracellular matrix-related proteins, and lipid peroxidation. Autophagy was activated in the cardiomyocyte from nephrectomized mice, but HRP treatment had no effect on cardiomyocyte autophagy. CONCLUSIONS This study indicates that (P)PR blockade is a beneficial strategy by suppressing cardiac fibrosis and hypertrophy to ameliorate heart failure caused by CKD.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D008297 Male Males
D008810 Mice, Inbred C57BL One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases. Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D008822 Mice, Transgenic Laboratory mice that have been produced from a genetically manipulated EGG or EMBRYO, MAMMALIAN. Transgenic Mice,Founder Mice, Transgenic,Mouse, Founder, Transgenic,Mouse, Transgenic,Mice, Transgenic Founder,Transgenic Founder Mice,Transgenic Mouse
D008854 Microscopy, Electron Microscopy using an electron beam, instead of light, to visualize the sample, thereby allowing much greater magnification. The interactions of ELECTRONS with specimens are used to provide information about the fine structure of that specimen. In TRANSMISSION ELECTRON MICROSCOPY the reactions of the electrons that are transmitted through the specimen are imaged. In SCANNING ELECTRON MICROSCOPY an electron beam falls at a non-normal angle on the specimen and the image is derived from the reactions occurring above the plane of the specimen. Electron Microscopy
D009206 Myocardium The muscle tissue of the HEART. It is composed of striated, involuntary muscle cells (MYOCYTES, CARDIAC) connected to form the contractile pump to generate blood flow. Muscle, Cardiac,Muscle, Heart,Cardiac Muscle,Myocardia,Cardiac Muscles,Heart Muscle,Heart Muscles,Muscles, Cardiac,Muscles, Heart
D009842 Oligopeptides Peptides composed of between two and twelve amino acids. Oligopeptide
D011956 Receptors, Cell Surface Cell surface proteins that bind signalling molecules external to the cell with high affinity and convert this extracellular event into one or more intracellular signals that alter the behavior of the target cell (From Alberts, Molecular Biology of the Cell, 2nd ed, pp693-5). Cell surface receptors, unlike enzymes, do not chemically alter their ligands. Cell Surface Receptor,Cell Surface Receptors,Hormone Receptors, Cell Surface,Receptors, Endogenous Substances,Cell Surface Hormone Receptors,Endogenous Substances Receptors,Receptor, Cell Surface,Surface Receptor, Cell
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response

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