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Pro-oxidative priming but maintained cardiac function in a broad spectrum of murine models of chronic kidney disease
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- Wollenhaupt, Julia (författare)
- Univ Hosp RWTH Aachen, Inst Mol Cardiovasc Res IMCAR, Aachen, Germany.
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- Frisch, Janina (författare)
- Saarland Univ, Med Fac, Ctr Integrat Physiol & Mol Med, Ctr Human & Mol Biol,Dept Biophys, Homburg, Germany.
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- Harlacher, Eva (författare)
- Univ Hosp RWTH Aachen, Inst Mol Cardiovasc Res IMCAR, Aachen, Germany.
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- Univ Hosp RWTH Aachen, Inst Mol Cardiovasc Res IMCAR, Aachen, Germany Saarland Univ, Med Fac, Ctr Integrat Physiol & Mol Med, Ctr Human & Mol Biol,Dept Biophys, Homburg, Germany. (creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
- Ingår i: Redox Biology. - : Elsevier BV. - 2213-2317. ; 56
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
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- Aims: Patients with chronic kidney disease (CKD) have an increased risk of cardiovascular events and exhibit myocardial changes including left ventricular (LV) hypertrophy and fibrosis, overall referred to as 'uremic cardiomyopathy'. Although different CKD animal models have been studied for cardiac effects, lack of consistent reporting on cardiac function and pathology complicates clear comparison of these models. Therefore, this study aimed at a systematic and comprehensive comparison of cardiac function and cardiac pathophysiological characteristics in eight different CKD models and mouse strains, with a main focus on adenine-induced CKD. Methods and results: CKD of different severity and duration was induced by subtotal nephrectomy or adenine-rich diet in various strains (C57BL/6J, C57BL/6 N, hyperlipidemic C57BL/6J ApoE(-/-), 129/Sv), followed by the analysis of kidney function and morphology, blood pressure, cardiac function, cardiac hypertrophy, fibrosis, myocardial calcification and inflammation using functional, histological and molecular techniques, including cardiac gene expression profiling supplemented by oxidative stress analysis. Intriguingly, despite uremia of variable degree, neither cardiac dysfunction, hypertrophy nor interstitial fibrosis were observed. However, already moderate CKD altered cardiac oxidative stress responses and enhanced oxidative stress markers in each mouse strain, with cardiac RNA sequencing revealing activation of oxidative stress signaling as well as anti-inflammatory feedback responses. Conclusion: This study considerably expands the knowledge on strain-and protocol-specific differences in the field of cardiorenal research and reveals that several weeks of at least moderate experimental CKD increase oxidative stress responses in the heart in a broad spectrum of mouse models. However, this was insufficient to induce relevant systolic or diastolic dysfunction, suggesting that additional "hits " are required to induce uremic cardiomyopathy. Translational perspective: Patients with chronic kidney disease (CKD) have an increased risk of cardiovascular adverse events and exhibit myocardial changes, overall referred to as 'uremic cardiomyopathy'. We revealed that CKD increases cardiac oxidative stress responses in the heart. Nonetheless, several weeks of at least moderate experimental CKD do not necessarily trigger cardiac dysfunction and remodeling, suggesting that additional "hits " are required to induce uremic cardiomyopathy in the clinical setting. Whether the altered cardiac oxidative stress balance in CKD may increase the risk and extent of cardiovascular damage upon additional cardiovascular risk factors and/or events will be addressed in future studies.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Kardiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cardiac and Cardiovascular Systems (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Urologi och njurmedicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Urology and Nephrology (hsv//eng)
Nyckelord
- Cardiomyopathy
- Chronic kidney disease
- Animal model
- Oxidative stress
- Cardiac remodeling
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