1
|
Böttner J, Werner S, Adams V, Knauth S, Kricke A, Thiele H, Büttner P. Structural and functional alterations in heart and skeletal muscle following severe TAC in mice: impact of moderate exercise training. Biol Res 2021; 54:31. [PMID: 34538250 PMCID: PMC8451113 DOI: 10.1186/s40659-021-00354-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 08/30/2021] [Indexed: 11/10/2022] Open
Abstract
Background Heart failure (HF) is the leading cause of death in western countries. Cardiac dysfunction is accompanied by skeletal alterations resulting in muscle weakness and fatigue. Exercise is an accepted interventional approach correcting cardiac and skeletal dysfunction, thereby improving mortality, re-hospitalization and quality of life. Animal models are used to characterize underpinning mechanisms. Transverse aortic constriction (TAC) results in cardiac pressure overload and finally HF. Whether exercise training improves cardiac remodeling and peripheral cachexia in the TAC mouse model was not analyzed yet. In this study, 2 weeks post TAC animals were randomized into two groups either performing a moderate exercise program (five times per week at 60% VO2 max for 40 min for a total of 8 weeks) or staying sedentary. Results In both TAC groups HF characteristics reduced ejection fraction (− 15% compared to sham, p < 0.001), cardiac remodeling (+ 22.5% cardiomyocyte cross sectional area compared to sham; p < 0.001) and coronary artery congestion (+ 34% diameter compared to sham; p = 0.008) were observed. Unexpectedly, peripheral cachexia was not detected. Furthermore, compared to sedentary group animals from the exercise group showed aggravated HF symptoms [heart area + 9% (p = 0.026), heart circumference + 7% (p = 0.002), right ventricular wall thickness − 30% (p = 0.003)] while muscle parameters were unchanged [Musculus soleus fiber diameter (p = 0.55), Musculus extensor digitorum longus contraction force (p = 0.90)]. Conclusion The severe TAC model is inappropriate to study moderate exercise effects in HF with respect to cardiac and skeletal muscle improvements. Further, the phenotype induced by different TAC procedures should be well documented and taken into account when planning experiments.
Collapse
Affiliation(s)
- Julia Böttner
- Department of Cardiology, Heart Center Leipzig at University of Leipzig, Strümpellstr. 39, 04289, Leipzig, Germany.
| | - Sarah Werner
- Department of Cardiology, Heart Center Leipzig at University of Leipzig, Strümpellstr. 39, 04289, Leipzig, Germany
| | - Volker Adams
- Laboratory of Molecular and Experimental Cardiology, TU Dresden, Heart Center Dresden, Dresden, Germany
| | - Sarah Knauth
- Department of Cardiology, Heart Center Leipzig at University of Leipzig, Strümpellstr. 39, 04289, Leipzig, Germany
| | - Angela Kricke
- Department of Cardiology, Heart Center Leipzig at University of Leipzig, Strümpellstr. 39, 04289, Leipzig, Germany
| | - Holger Thiele
- Department of Cardiology, Heart Center Leipzig at University of Leipzig, Strümpellstr. 39, 04289, Leipzig, Germany
| | - Petra Büttner
- Department of Cardiology, Heart Center Leipzig at University of Leipzig, Strümpellstr. 39, 04289, Leipzig, Germany
| |
Collapse
|
2
|
Al-Asoom LI, Al-Shaikh BA, Bamosa AO, El-Bahai MN. Comparison of Nigella sativa- and exercise-induced models of cardiac hypertrophy: structural and electrophysiological features. Cardiovasc Toxicol 2015; 14:208-13. [PMID: 24448711 DOI: 10.1007/s12012-014-9244-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Exercise training is employed as supplementary therapeutic intervention for heart failure, due to its ability to induce physiological cardiac hypertrophy. In parallel, supplementation with Nigella sativa (N. sativa) was found to enhance myocardial function and induce cardiac hypertrophy. In this study, we aim to compare the morphological and electrophysiological changes associated with these patterns of cardiac hypertrophy and the possible changes upon administration of N. sativa to exercise-trained animals. Fifty-six adult Wistar rats were divided into: control, Nigella-treated (N), exercise-trained (E), and Nigella-treated-exercise-trained (NE) rats. Daily 800 mg/kg N. sativa was administered orally to N and NE. E and NE ran on treadmill, 2 h/day. At the end of 8 weeks ECG, body weight (BW), heart weight (HW), and left ventricular weight (LVW) were recorded. Hematoxylin and Eosin and periodic acid-Schiff sections were prepared to study the histology of left ventricles and to measure diameter of cardiomyocytes (Cdia). HW/BW, LVW/BW, and mean Cdia were significantly higher in all experimental animals compared to the controls. Histology showed normal cardiomyocytes with no fibrosis. ECG showed significantly lower heart rates, higher QRS amplitude, and ventricular specific potential in NE group compared to control group. Supplementation of N. sativa demonstrated a synergistic effect with exercise training as Nigella-exercise-induced cardiac hypertrophy had lower heart rate and well-matched electrical activity of the heart to its mass. Therefore, this model of cardiac hypertrophy might be introduced as a new therapeutic strategy for treatment for heart failure with superior advantages to exercise training.
Collapse
Affiliation(s)
- Lubna Ibrahim Al-Asoom
- Department of Physiology, College of Medicine, University of Dammam, P. O. Box 2114, Ad Dammām, Saudi Arabia,
| | | | | | | |
Collapse
|
3
|
Effect of Nigella sativa supplementation to exercise training in a novel model of physiological cardiac hypertrophy. Cardiovasc Toxicol 2015; 14:243-50. [PMID: 24497112 DOI: 10.1007/s12012-014-9248-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Exercise training is employed as supplementary therapy to patients with heart failure due to its multiple beneficial cardiac effects including physiological remodeling of the heart. However, precautions might be taken for the concomitant high oxidant release. Nigella sativa (NS) has been found to induce cardiac hypertrophy and enhance cardiac function. Combination of NS supplementation and exercise training might induce a safer model of cardiac hypertrophy. Our aim was to study biomarkers associated with cardiac hypertrophy induced by NS supplementation of exercise-trained rats. Forty-five adult male Wistar rats (body weight 150-220 g) were divided equally into three groups: control, exercise-trained (ET) and NS-treated-exercise-trained (NSET) groups. Daily 800 mg/kg NS was administered orally to NSET group for 8 weeks. Rats of the ET and NSET groups were subjected to treadmill running sessions for 2 h/day for 8 weeks. By the end of the experiment, the following were recorded: body, heart and left ventricular weights (BW, HW, LVW), cardiomyocyte diameter, serum growth hormone, insulin growth factor-I (IGF-I), thyroid hormones, catecholamines, total nitrate, ICAM and antioxidant capacity. A homogenous cardiac hypertrophy was evidenced by increased HW/BW, LVW/BW ratios and cardiomyocyte diameter in the two groups of exercise-trained compared with control rats. Rats of ET group had higher growth hormone. Those of NSET group developed higher IGF-I and total antioxidant capacity, as well as lower serum thyroxin level. Simultaneous NS supplementation to an exercise training program preserves and augments exercise-induced physiological cardiac hypertrophy with step-forward adaptive signs of increased IGF-I and reduced thyroxin level, and with an added advantage of elevation of total serum antioxidant capacity. Thus, the novel model of NSET-induced cardiac hypertrophy might be introduced as a new therapeutic strategy for the treatment of heart failure with superior advantages to exercise training alone.
Collapse
|
4
|
|
5
|
Hourdé C, Joanne P, Medja F, Mougenot N, Jacquet A, Mouisel E, Pannerec A, Hatem S, Butler-Browne G, Agbulut O, Ferry A. Voluntary physical activity protects from susceptibility to skeletal muscle contraction-induced injury but worsens heart function in mdx mice. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 182:1509-18. [PMID: 23465861 DOI: 10.1016/j.ajpath.2013.01.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Revised: 12/19/2012] [Accepted: 01/14/2013] [Indexed: 12/25/2022]
Abstract
It is well known that inactivity/activity influences skeletal muscle physiological characteristics. However, the effects of inactivity/activity on muscle weakness and increased susceptibility to muscle contraction-induced injury have not been extensively studied in mdx mice, a murine model of Duchenne muscular dystrophy with dystrophin deficiency. In the present study, we demonstrate that inactivity (ie, leg immobilization) worsened the muscle weakness and the susceptibility to contraction-induced injury in mdx mice. Inactivity also mimicked these two dystrophic features in wild-type mice. In contrast, we demonstrate that these parameters can be improved by activity (ie, voluntary wheel running) in mdx mice. Biochemical analyses indicate that the changes induced by inactivity/activity were not related to fiber-type transition but were associated with altered expression of different genes involved in fiber growth (GDF8), structure (Actg1), and calcium homeostasis (Stim1 and Jph1). However, activity reduced left ventricular function (ie, ejection and shortening fractions) in mdx, but not C57, mice. Altogether, our study suggests that muscle weakness and susceptibility to contraction-induced injury in dystrophic muscle could be attributable, at least in part, to inactivity. It also suggests that activity exerts a beneficial effect on dystrophic skeletal muscle but not on the heart.
Collapse
Affiliation(s)
- Christophe Hourdé
- Institute of Myology, INSERM U974, CNRS UMR7215, UPMC UM76, Université Pierre et Marie Curie-Paris 6, Sorbonne Universities, Paris, France
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
6
|
Guasch E, Benito B, Nattel S. Exercise training, inflammation and heart failure: working out to cool down. J Physiol 2010; 588:2525-6. [PMID: 20634182 DOI: 10.1113/jphysiol.2010.194134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Eduard Guasch
- Electrophysiology Research Program, Research Center, Montreal Heart Institute, 5000 Belanger Street E, Montreal, Quebec, Canada H1T 1C8
| | | | | |
Collapse
|
7
|
Predictors of Functional Capacity in Patients With Heart Failure. TOPICS IN GERIATRIC REHABILITATION 2010. [DOI: 10.1097/tgr.0b013e3181ff2255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
8
|
Serra AJ, Santos MHH, Bocalini DS, Antônio EL, Levy RF, Santos AA, Higuchi ML, Silva JA, Magalhães FC, Baraúna VG, Krieger JE, Tucci PJF. Exercise training inhibits inflammatory cytokines and more than prevents myocardial dysfunction in rats with sustained beta-adrenergic hyperactivity. J Physiol 2010; 588:2431-42. [PMID: 20442263 DOI: 10.1113/jphysiol.2010.187310] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Myocardial hypertrophy and dysfunction occur in response to excessive catecholaminergic drive. Adverse cardiac remodelling is associated with activation of proinflammatory cytokines in the myocardium. To test the hypothesis that exercise training can prevent myocardial dysfunction and production of proinflammatory cytokines induced by beta-adrenergic hyperactivity, male Wistar rats were assigned to one of the following four groups: sedentary non-treated (Con); sedentary isoprenaline treated (Iso); exercised non-treated (Ex); and exercised plus isoprenaline (Iso+Ex). Echocardiography, haemodynamic measurements and isolated papillary muscle were used for functional evaluations. Real-time RT-PCR and Western blot were used to quantify tumour necrosis factor alpha, interleukin-6, interleukin-10 and transforming growth factor beta(1) (TGF-beta(1)) in the tissue. NF-B expression in the nucleus was evaluated by immunohistochemical staining. The Iso rats showed a concentric hypertrophy of the left ventricle (LV). These animals exhibited marked increases in LV end-diastolic pressure and impaired myocardial performance in vitro, with a reduction in the developed tension and maximal rate of tension increase and decrease, as well as worsened recruitment of the Frank-Starling mechanism. Both gene and protein levels of tumour necrosis factor alpha and interleukin-6, as well as TGF-beta(1) mRNA, were increased. In addition, the NF-B expression in the Iso group was significantly raised. In the Iso+Ex group, the exercise training had the following effects: (1) it prevented LV hypertrophy; (ii) it improved myocardial contractility; (3) it avoided the increase of proinflammatory cytokines and improved interleukin-10 levels; and (4) it attenuated the increase of TGF-beta(1) mRNA. Thus, exercise training in a model of beta-adrenergic hyperactivity can avoid the adverse remodelling of the LV and inhibit inflammatory cytokines. Moreover, the cardioprotection is related to beneficial effects on myocardial performance.
Collapse
Affiliation(s)
- Andrey J Serra
- Department of Medicine, Cardiology Division, Federal University of São Paulo, (UNIFESP), São Paulo, SP, Brazil.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|