1
|
Guedes MR, de Noronha SISR, Chírico MTT, da Costa GDC, de Freitas Castro T, de Brito RCF, Vieira LG, Reis TO, Ribeiro MC, Reis AB, Carneiro CM, Bezerra FS, Montano N, da Silva VJD, de Menezes RCA, Chianca-Jr DA, Silva FCDS. Ivabradine restores tonic cardiovascular autonomic control and reduces tachycardia, hypertension and left ventricular inflammation in post-weaning protein malnourished rats. Life Sci 2024; 346:122636. [PMID: 38614307 DOI: 10.1016/j.lfs.2024.122636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 03/22/2024] [Accepted: 04/10/2024] [Indexed: 04/15/2024]
Abstract
Malnutrition results in autonomic imbalance and heart hypertrophy. Overexpression of hyperpolarization-activated cyclic nucleotide-gated channels (HCN) in the left ventricles (LV) is linked to hypertrophied hearts and abnormal myocardium automaticity. Given that ivabradine (IVA) has emerging pleiotropic effects, in addition to the widely known bradycardic response, this study evaluated if IVA treatment could repair the autonomic control and cardiac damages in malnourished rats. AIM Assess the impact of IVA on tonic cardiovascular autonomic control and its relationship with hemodynamics regulation, LV inflammation, and HCN gene expression in post-weaning protein malnutrition condition. MAIN METHODS After weaning, male rats were divided into control (CG; 22 % protein) and malnourished (MG; 6 % protein) groups. At 35 days, groups were subdivided into CG-PBS, CG-IVA, MG-PBS and MG-IVA (PBS 1 ml/kg or IVA 1 mg/kg) received during 8 days. We performed jugular vein cannulation and electrode implant for drug delivery and ECG registration to assess tonic cardiovascular autonomic control; femoral cannulation for blood pressure (BP) and heart rate (HR) assessment; and LV collection to evaluate ventricular remodeling and HCN gene expression investigation. KEY FINDINGS Malnutrition induced BP and HR increases, sympathetic system dominance, and LV remodeling without affecting HCN gene expression. IVA reversed the cardiovascular autonomic imbalance; prevented hypertension and tachycardia; and inhibited the LV inflammatory process and fiber thickening caused by malnutrition. SIGNIFICANCE Our findings suggest that ivabradine protects against malnutrition-mediated cardiovascular damage. Moreover, our results propose these effects were not attributed to HCN expression changes, but rather to IVA pleiotropic effects on autonomic control and inflammation.
Collapse
Affiliation(s)
- Mariana Reis Guedes
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Sylvana Izaura Salyba Rendeiro de Noronha
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Máira Tereza Talma Chírico
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Gabriela Dias Carvalho da Costa
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Thalles de Freitas Castro
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Rory Cristiane Fortes de Brito
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Lucas Gabriel Vieira
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Thayane Oliveira Reis
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Marcelo Carlos Ribeiro
- Statistics Department, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Alexandre Barbosa Reis
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Cláudia Martins Carneiro
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Frank Silva Bezerra
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Nicola Montano
- Department of Clinical Sciences and Community Health, IRCCS Ca' Granda Foundation, Ospedale Maggiore Policlinico, University of Milan, Milan, Italy.
| | - Valdo José Dias da Silva
- Department of Biochemistry, Pharmacology and Physiology, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil; Graduate Program in Physiological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil.
| | - Rodrigo Cunha Alvim de Menezes
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Deoclécio Alves Chianca-Jr
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Fernanda Cacilda Dos Santos Silva
- Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, MG, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| |
Collapse
|
2
|
Nogueira SS, Souza MA, Santos EC, Caldas IS, Gonçalves RV, Novaes RD. Oxidative stress, cardiomyocytes senescence and contractile dysfunction in in vitro and in vivo experimental models of Chagas disease. Acta Trop 2023:106950. [PMID: 37211152 DOI: 10.1016/j.actatropica.2023.106950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/13/2023] [Accepted: 05/18/2023] [Indexed: 05/23/2023]
Abstract
AIMS The relationship between redox imbalance and cardiovascular senescence in infectious myocarditis is unknown. Thus, the aim of this study was to investigate whether cardiomyocytes parasitism, oxidative stress and contractile dysfunction can be correlated to senescence-associated β-galactosidase (SA-β-Gal) activity in Trypanosoma cruzi-infection in vitro and in vivo. METHODS Uninfected, T. cruzi-infected untreated and benznidazole (BZN)-treated H9c2 cardiomyocytes and rats were investigated. Parasitological, prooxidant, antioxidant, microstructural, and senescence-associated markers were quantified in vitro and in vivo. RESULTS T. cruzi infection triggered intense cardiomyocytes parasitism in vitro and in vivo, which was accompanied by reactive oxygen species (ROS) upregulation, lipids, proteins and DNA oxidation in cardiomyocytes and cardiac tissue. Oxidative stress was parallel to microstructural cell damage (e.g., increased cardiac toponin I levels) and contractile dysfunction in cardiomyocytes in vitro and in vivo, whose severity accompanied a premature cellular senescence-like phenotype revealed by increased senescence-associated β-galactosidase (SA-β-Gal) activity and DNA oxidation (8-OHdG). Cellular parasitism (e.g., infection rate and parasite load), myocarditis and T. cruzi-induced prooxidant responses were attenuated by early BZN administration to interrupt the progression of T. cruzi infection, protecting against SA-β-gal-based premature cellular senescence, microstructural damage and contractile deterioration in cardiomyocytes from T. cruzi-infected animals. CONCLUSION Our findings indicated that cell parasitism, redox imbalance and contractile dysfunction were correlated to SA-β-Gal-based cardiomyocytes premature senescence in acute T. cruzi infection. Therefore, in addition to controlling parasitism, inflammation and oxidative stress; inhibiting cardiomyocytes premature senescence should be further investigated as an additional target of specific Chagas disease therapeutics.
Collapse
Affiliation(s)
- Silas Santana Nogueira
- Programa de Pós-Graduação em Biociências Aplicadas à Saúde, Universidade Federal de Alfenas, Alfenas, 37130-000, Minas Gerais, Brazil; Instituto Federal do Sul de Minas Gerais, Pouso Alegre, 37560-250, Minas Gerais, Brazil
| | - Matheus Augusto Souza
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas, 37130-000, Minas Gerais, Brazil
| | - Eliziária Cardoso Santos
- Faculdade de Medicina, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil, 39100-000, Minas Gerais, Brazil
| | - Ivo Santana Caldas
- Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas, 37130-000, Minas Gerais, Brazil; Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, 37130-000, Minas Gerais, Brazil
| | - Reggiani Vilela Gonçalves
- Departamento de Biologia Animal, Universidade Federal de Viçosa, Viçosa, 36570-900, Minas Gerais, Brazil
| | - Rômulo Dias Novaes
- Programa de Pós-Graduação em Biociências Aplicadas à Saúde, Universidade Federal de Alfenas, Alfenas, 37130-000, Minas Gerais, Brazil; Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Alfenas, Alfenas, 37130-000, Minas Gerais, Brazil; Instituto de Ciências Biomédicas, Universidade Federal de Alfenas, Alfenas, 37130-000, Minas Gerais, Brazil.
| |
Collapse
|
3
|
Gomes FAR, Noronha SISR, Silva SCA, Machado-Júnior PA, Ostolin TLVDP, Chírico MTT, Ribeiro MC, Reis AB, Cangussú SD, Montano N, Silva VJD, de Menezes RCA, Silva FCS, Chianca DA. Ivabradine treatment lowers blood pressure and promotes cardiac and renal protection in spontaneously hypertensive rats. Life Sci 2022; 308:120919. [PMID: 36049530 DOI: 10.1016/j.lfs.2022.120919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/10/2022] [Accepted: 08/24/2022] [Indexed: 11/28/2022]
Abstract
Hypertension is linked to hyperpolarization-activated cyclic nucleotide-gated (HCN) function, expressed in excitable and non-excitable cells. Considering that the reduction in heart rate (HR) improves coronary perfusion and cardiac performance, ivabradine (IVA) emerged as an important drug for the treatment of cardiovascular diseases. AIM Evaluate if IVA chronic treatment effect can mitigate hypertension and reverse the cardiac and renal damage in SHR. MAIN METHODS Rats were divided into 4 groups treated for 14 days with PBS (1 ml/kg; i.p) or IVA (1 mg/kg; i.p): 1) WKY PBS; 2) SHR PBS; 3) WKY IVA; and 4) SHR IVA. The systolic blood pressure (SBP) was measured, indirectly, before and during the treatment period with IVA (day 0, 1, 7 and 11). Rats were subjected to artery cannulation for direct blood pressure (BP) measurement. Morphofunctional and gene expression were evaluated in the heart and kidneys. KEY FINDINGS IVA reduced SBP only in SHR on the 7th day. Direct blood pressure measurement showed that IVA chronic treatment reduced HR in the SHR. Interestingly, mean arterial pressure (MAP) was reduced in SHR IVA when compared to SHR PBS. Serum and urinary biochemical data were not altered by IVA. Moreover, IVA reduced the renal inflammatory infiltrates and increased glomerular density, besides preventing the cardiac inflammatory and hypertrophic responses. SIGNIFICANCE IVA treatment lowered blood pressure, improved cardiac remodeling and inflammation, as well as decreasing renal damage in SHR. Further, IVA increased renal HCN2 mRNA and reduced cardiac HCN4 mRNA.
Collapse
Affiliation(s)
- Fabiana A R Gomes
- Laboratory of Cardiovascular Physiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Sylvana I S R Noronha
- Laboratory of Cardiovascular Physiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Sabrina C A Silva
- Laboratory of Cardiovascular Physiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Pedro A Machado-Júnior
- Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil; Laboratory of Experimental Pathophysiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Thais Lopes Valentim Di Paschoale Ostolin
- Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil; Laboratory of Immunophatology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Máira Tereza Talma Chírico
- Laboratory of Cardiovascular Physiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil
| | - Marcelo C Ribeiro
- Statistics Department, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Alexandre Barbosa Reis
- Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil; Laboratory of Immunophatology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Silvia D Cangussú
- Laboratory of Cardiovascular Physiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil; Laboratory of Experimental Pathophysiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Nicola Montano
- Department of Clinical Sciences and Community Health, IRCCS Ca' Granda Foundation, Ospedale Maggiore Policlinico, University of Milan, Milan, Italy.
| | - Valdo J D Silva
- Department of Physiology, Institute of Biological and Natural Sciences, Federal University of Triângulo Mineiro, Uberaba, Brazil.
| | - Rodrigo C A de Menezes
- Laboratory of Cardiovascular Physiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Fernanda C S Silva
- Laboratory of Cardiovascular Physiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| | - Deoclécio A Chianca
- Laboratory of Cardiovascular Physiology, Department of Biological Sciences, Institute of Exact and Biological Sciences, Federal University of Ouro Preto, Ouro Preto, Brazil; Graduate Program in Biological Sciences - CBIOL/NUPEB, Federal University of Ouro Preto, Ouro Preto, Brazil.
| |
Collapse
|
4
|
Boldt K, Joumaa V, Turnbull J, Fedak PW, Herzog W. A high-whey-protein diet does not enhance mechanical and structural remodeling of cardiac muscle in response to aerobic exercise in rats. Phys Act Nutr 2022; 26:28-38. [PMID: 35510443 PMCID: PMC9081358 DOI: 10.20463/pan.2022.0005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 02/18/2022] [Accepted: 03/30/2022] [Indexed: 11/22/2022] Open
Abstract
PURPOSE Aerobic exercise training results in distinct structural and mechanical myocardial adaptations. In skeletal muscle, whey protein supplementation is effective in enhancing muscle adaptation following resistance exercise. However, it is unclear whether cardiac adaptation to aerobic exercise can be enhanced by systematic protein supplementation. METHODS Twelve-week-old rats were assigned to 12 weeks of either sedentary or aerobic exercise with either a standard (Sed+Standard, Ex+Standard) or high-protein (Sed+Pro, Ex+Pro) diet. Echocardiography was used to measure cardiac structural remodeling and performance. Skinned cardiac fiber bundles were used to determine the active and passive stress properties, maximum shortening velocity, and calcium sensitivity. RESULTS Aerobic training was characterized structurally by increases in ventricle volume (Ex+Standard, 19%; Ex+Pro, 29%) and myocardial thickness (Ex+Standard, 26%; Ex+- Pro, 12%) compared to that of baseline. Skinned trabecula r fiber bundles also had a greater unloaded shortening velocity (Sed+Standard, 1.04±0.05; Sed+Pro, 1.07±0.03; Ex- +Standard, 1.16±0.04; Ex+Pro, 1.18±0.05 FL/s) and calcium sensitivity (pCa50: Sed+Standard, 6.04±0.17; Sed+Pro, 6.08±0.19; Ex+Standard, 6.30±0.09; Ex+Pro, 6.36±0.12) in trained hearts compared to that of hearts from sedentary animals. However, the addition of a high-protein diet did not provide additional benefits to either the structural or mechanical adaptations of the myocardium. CONCLUSION Therefore, it seems that a high-whey-protein diet does not significantly enhance adaptations of the heart to aerobic exercise in comparison to that of a standard diet.
Collapse
Affiliation(s)
- Kevin Boldt
- Human Performance Laboratory, University of Calgary, Calgary, Canada
| | - Venus Joumaa
- Human Performance Laboratory, University of Calgary, Calgary, Canada
| | - Jeannine Turnbull
- Health Center, Federal University of Santa Catarina, Florianopolis, Brazil
| | - Paul W.M. Fedak
- Health Center, Federal University of Santa Catarina, Florianopolis, Brazil
| | - Walter Herzog
- Human Performance Laboratory, University of Calgary, Calgary, Canada
- Department of Cardiac Sciences, University of Calgary, Calgary, Canada
| |
Collapse
|
5
|
García-Arévalo M, Lorza-Gil E, Cardoso L, Batista TM, Araujo TR, Ramos LAF, Areas MA, Nadal A, Carneiro EM, Davel AP. Ventricular Fibrosis and Coronary Remodeling Following Short-Term Exposure of Healthy and Malnourished Mice to Bisphenol A. Front Physiol 2021; 12:638506. [PMID: 33912069 PMCID: PMC8072349 DOI: 10.3389/fphys.2021.638506] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 03/03/2021] [Indexed: 11/15/2022] Open
Abstract
Bisphenol-A (BPA) is an endocrine disruptor associated with higher risk of insulin resistance, type 2 diabetes, and cardiovascular diseases especially in susceptible populations. Because malnutrition is a nutritional disorder associated with high cardiovascular risk, we sought to compare the effects of short-term BPA exposure on cardiovascular parameters of healthy and protein-malnourished mice. Postweaned male mice were fed a normo- (control) or low-protein (LP) diet for 8 weeks and then exposed or not to BPA (50 μg kg−1 day−1) for the last 9 days. Systolic blood pressure was higher in BPA or LP groups compared with the control group. However, diastolic blood pressure was enhanced by BPA only in malnourished mice. Left ventricle (LV) end diastolic pressure (EDP), collagen deposition, and CTGF mRNA expression were higher in the control or malnourished mice exposed to BPA than in the respective nonexposed groups. Nevertheless, mice fed LP diet exposed to BPA exhibited higher angiotensinogen and cardiac TGF-β1 mRNA expression than mice treated with LP or BPA alone. Wall:lumen ratio and cross-sectional area of intramyocardial arteries were higher either in the LP or BPA group compared with the control mice. Taken together, our data suggest that short-term BPA exposure results in LV diastolic dysfunction and fibrosis, and intramyocardial arteries inward remodeling, besides potentiate protein malnutrition-induced hypertension and cardiovascular risk.
Collapse
Affiliation(s)
- Marta García-Arévalo
- Department of Structural and Functional Biology, Institute of Biology, Campinas, Brazil.,Obesity and Comorbidities Research Center-OCRC, UNICAMP, Campinas, Brazil
| | - Estela Lorza-Gil
- Department of Structural and Functional Biology, Institute of Biology, Campinas, Brazil.,Obesity and Comorbidities Research Center-OCRC, UNICAMP, Campinas, Brazil
| | - Leandro Cardoso
- Department of Structural and Functional Biology, Institute of Biology, Campinas, Brazil
| | - Thiago Martins Batista
- Department of Structural and Functional Biology, Institute of Biology, Campinas, Brazil.,Obesity and Comorbidities Research Center-OCRC, UNICAMP, Campinas, Brazil
| | - Thiago Reis Araujo
- Department of Structural and Functional Biology, Institute of Biology, Campinas, Brazil.,Obesity and Comorbidities Research Center-OCRC, UNICAMP, Campinas, Brazil
| | | | - Miguel Arcanjo Areas
- Department of Structural and Functional Biology, Institute of Biology, Campinas, Brazil
| | - Angel Nadal
- Instituto de Biología Molecular y Celular, Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche, Spanish Biomedical Research Center in Diabetes and Associated Metabolic Disorders, Universidad Miguel Hernández, Elche, Spain
| | - Everardo Magalhães Carneiro
- Department of Structural and Functional Biology, Institute of Biology, Campinas, Brazil.,Obesity and Comorbidities Research Center-OCRC, UNICAMP, Campinas, Brazil
| | - Ana Paula Davel
- Department of Structural and Functional Biology, Institute of Biology, Campinas, Brazil
| |
Collapse
|
6
|
Post-weaning protein malnutrition induces myocardial dysfunction associated with oxidative stress and altered calcium handling proteins in adult rats. J Physiol Biochem 2021; 77:261-272. [PMID: 33555533 DOI: 10.1007/s13105-021-00792-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 01/22/2021] [Indexed: 10/22/2022]
Abstract
Hypercaloric low-protein diet may lead to a state of malnutrition found in the low-income population of Northeastern Brazil. Although malnutrition during critical periods in the early life is associated with cardiovascular diseases in adulthood, the mechanisms of cardiac dysfunction are still unclear. Here we studied the effects of post-weaning malnutrition due to low protein intake induced by a regional basic diet on the cardiac contractility of young adult rats. In vivo arterial hemodynamic and in vitro myocardial contractility were evaluated in 3-month-old rats. Additionally, protein content of the sarcoplasmic reticulum Ca(2+)-ATPase (SERCA), total phospholamban (PLB) and phosphorylated at serine 16 (p-Ser(16)-PLB), α2-subunit of the Na(+)/K(+)-ATPase (α2-NKA), and Na(+)/Ca(2+) exchanger (NXC) and in situ production of superoxide anion (O2(-)) were measured in the heart. Blood pressure and heart rate increased in the post-weaning malnourished (PWM) rats. Moreover, malnutrition decreased twitch force and inotropic responses of the isolated cardiac muscle. Protein expression of SERCA, PLB/SERCA, and p-Ser(16)-PLB/PLB ratios and α2-NKA were decreased without changing NCX. The contraction dependent on transsarcolemmal calcium influx was unchanged but responsiveness to Ca(2+) and tetanic peak contractions were impaired in the PWM group. Myocardial O2(-) production was significantly increased by PWM. Our data demonstrated that this hypercaloric low-protein diet in rats is associated with myocardial dysfunction, altered expression of major calcium handling proteins, and increased local oxidative stress. These findings reinforce the attention needed for pediatric care, since chronic malnutrition in early life is related to increased cardiovascular risk in adulthood. Graphical Abstract.
Collapse
|
7
|
Dietary protein restriction throughout intrauterine and postnatal life results in potentially beneficial myocardial tissue remodeling in the adult mouse heart. Sci Rep 2019; 9:15126. [PMID: 31641210 PMCID: PMC6805892 DOI: 10.1038/s41598-019-51654-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 10/02/2019] [Indexed: 12/18/2022] Open
Abstract
Diet composition impacts metabolic and cardiovascular health with high caloric diets contributing to obesity related disorders. Dietary interventions such as caloric restriction exert beneficial effects in the cardiovascular system, but alteration of which specific nutrient is responsible is less clear. This study investigates the effects of a low protein diet (LPD) on morphology, tissue composition and function of the neonatal and adult mouse heart. Mice were subjected to LPD (8.8% protein) or standard protein diet (SPD, 22% protein) throughout intrauterine and postnatal life. At birth LPD female but not male offspring exhibit reduced body weight whereas heart weight was unchanged in both sexes. Cardiomyocyte cross sectional area was increased in newborn LPD females compared to SPD, whereas proliferation, cellular tissue composition and vascularization were unaffected. Adult female mice on LPD exhibit reduced body weight but normal heart weight compared to SPD controls. Echocardiography revealed normal left ventricular contractility in LPD animals. Histology showed reduced interstitial fibrosis, lower cardiomyocyte volume and elevated numbers of cardiomyocyte and non-myocyte nuclei per tissue area in adult LPD versus SPD myocardium. Furthermore, capillary density was increased in LPD hearts. In conclusion, pre- and postnatal dietary protein restriction in mice causes a potentially beneficial myocardial remodeling.
Collapse
|
8
|
Gonçalves RV, Santos JDB, Silva NS, Guillocheau E, Silva RE, Souza-Silva TG, Oliveira RF, Santos EC, Novaes RD. Trans-fatty acids aggravate anabolic steroid-induced metabolic disturbances and differential gene expression in muscle, pancreas and adipose tissue. Life Sci 2019; 232:116603. [PMID: 31254587 DOI: 10.1016/j.lfs.2019.116603] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 06/24/2019] [Accepted: 06/25/2019] [Indexed: 12/14/2022]
Abstract
AIMS Although anabolic steroids (AS) and trans-fatty acids overload exerts systemic toxicity and are independent risk factors for metabolic and cardiovascular disorders, their interaction remains poorly understood. Thus, we investigated the impact of a diet rich in trans-fatty acids (HFD) combined with AS on glycemic control, lipid profile, adipose tissue, skeletal muscle and pancreas microstructure and expression of genes involved in energy metabolism. MAIN METHODS Forty-eight C57BL/6 mice were randomized into 6 groups treated for 12 weeks with a standard diet (SD) or a diet rich in C18:1 trans-fatty isomers (HFD), alone or combined with 10 or 20 mg/kg testosterone cypionate (AS). KEY FINDINGS Our results indicated that AS improved glycemic control, upregulated gene expression of Glut-4 and CPT-1 in skeletal muscle, FAS, ACC and UCP-1 in adipose tissue. AS also reduced total and LDL cholesterol in mice fed a SD. When combined with the HFD, AS was unable to induce microstructural adaptations in adipose tissue, pancreatic islets and β-cells, but potentiated GCK and Glut-2 (pancreas) and Glut-4 and CPT-1 (skeletal muscle) upregulation. HFD plus AS also downregulated FAS and ACC gene expression in adipose tissue. Combined with HFD, AS increased triacylglycerol circulating levels, improved insulin sensitivity and glycemic control in mice. SIGNIFICANCE Our findings indicated that HFD and AS can interact to modulates glycemic control and lipid profile by a mechanism potentially related with a reprogramming of genes expression in organs such as the pancreas, adipose tissue and skeletal muscle.
Collapse
Affiliation(s)
- Reggiani V Gonçalves
- Department of Animal Biology, Federal University of Viçosa, 36570-000, Minas Gerais, Brazil
| | - Jamili D B Santos
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-001, Minas Gerais, Brazil
| | - Natanny S Silva
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-001, Minas Gerais, Brazil
| | - Etienne Guillocheau
- Laboratory of Biochemistry and Human Nutrition, Agrocampus-Ouest, 35042, Rennes, France
| | - Robson E Silva
- School of Medicine, Federal University of Alfenas, 37130-001, Minas Gerais, Brazil
| | - Thaiany G Souza-Silva
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-001, Minas Gerais, Brazil
| | - Rafael F Oliveira
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-001, Minas Gerais, Brazil; School of Dentistry, Federal University of Alfenas, 37130-001, Minas Gerais, Brazil
| | - Eliziária C Santos
- School of Medicine, Federal University of Jequitinhonha and Mucuri Valleys, 39100-000, Minas Gerais, Brazil
| | - Romulo D Novaes
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-001, Minas Gerais, Brazil.
| |
Collapse
|
9
|
Santos JDB, Mendonça AAS, Sousa RC, Silva TGS, Bigonha SM, Santos EC, Gonçalves RV, Novaes RD. Food-drug interaction: Anabolic steroids aggravate hepatic lipotoxicity and nonalcoholic fatty liver disease induced by trans fatty acids. Food Chem Toxicol 2018; 116:360-368. [PMID: 29704577 DOI: 10.1016/j.fct.2018.04.056] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 04/19/2018] [Accepted: 04/24/2018] [Indexed: 12/18/2022]
Abstract
Remains unknown if dietary lipids and anabolic steroids (AS) can interact to modify energy metabolism, hepatic structure and function. We investigated the impact of AS on gene expression, lipid profile, redox status and the development of nonalcoholic fatty liver disease (NAFLD) in mice treated with a diet rich in trans fatty acids. Seventy-two C57BL/6 mice were equally randomized into six groups and treated with a standard diet (SD) or high-fat diet (HFD) alone or combined with testosterone cypionate (10 or 20 mg/kg) for 12 weeks. When combined with a HFD, AS reduced plasma HDL cholesterol levels. It also upregulated SREBP-1, PPARα, SCD-1 and ACOX1 gene expression; plasma and hepatic triglyceride levels; oxidative stress; circulating hepatic transaminase levels and NAFLD severity. Our finding indicated that the activity of antioxidant enzymes such as catalase, glutathione-s-transferase and superoxide dismutase was attenuated by HFD, an effect whose implications for AS-induced hepatotoxicity requires further investigation. Increased lipid, protein and DNA oxidative damage as well as worsening NAFLD in response to the interaction of HFD and AS were also potentially associated with the ability of AS to amplify the activation of regulatory lipid metabolism genes that are also involved in the control of cellular redox balance.
Collapse
Affiliation(s)
- Jamili D B Santos
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-000, Minas Gerais, Brazil
| | - Andréa A S Mendonça
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-000, Minas Gerais, Brazil
| | - Rafaela C Sousa
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-000, Minas Gerais, Brazil
| | - Thaiany G S Silva
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-000, Minas Gerais, Brazil
| | - Solange M Bigonha
- Department of Nutrition and Health, Federal University of Viçosa, 36570-000, Minas Gerais, Brazil
| | - Eliziária C Santos
- School of Medicine, Federal University of Jequitinhonha and Mucuri Valleys, 39100-000, Minas Gerais, Brazil
| | - Reggiani V Gonçalves
- Department of Animal Biology, Federal University of Viçosa, 36570-000, Minas Gerais, Brazil
| | - Rômulo D Novaes
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, 37130-000, Minas Gerais, Brazil.
| |
Collapse
|
10
|
Sá RWM, Haibara AS, Gomes PM, Aguiar GL, Nascimento RSL, Pedrosa ML, Alzamora AC, de Oliveira LB, Cardoso LM. Changes in cardiovascular responses to chemoreflex activation of rats recovered from protein restriction are not related to AT 1 receptors. Exp Physiol 2017; 102:34-47. [PMID: 27763697 DOI: 10.1113/ep085791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 10/17/2016] [Indexed: 12/18/2022]
Abstract
NEW FINDINGS What is the central question of this study? In this study, we sought to investigate whether cardiovascular responses to peripheral chemoreflex activation of rats recovered from protein restriction are related to activation of AT1 receptors. What is the main finding and its importance? This study highlights the fact that angiotensinergic mechanisms activated by AT1 receptors do not support increased responses to peripheral chemoreflex activation by KCN in rats recovered from protein restriction. Also, we found that protein restriction led to increased resting ventilation in adult rats, even after recovery. The effects of a low-protein diet followed by recovery on cardiorespiratory responses to peripheral chemoreflex activation were tested before and after systemic angiotensin II type 1 (AT1 ) receptor antagonism. Male Fischer rats were divided into control and recovered (R-PR) groups after weaning. The R-PR rats were fed a low-protein (8%) diet for 35 days and recovered with a normal protein (20%) diet for 70 days. Control rats received a normal protein diet for 105 days (CG105 ). After cannulation surgery, mean arterial pressure, heart rate, respiratory frequency, tidal volume and minute ventilation were acquired using a digital recording system in freely moving rats. The role of angintensin II was evaluated by systemic antagonism of AT1 receptors with losartan (20 mg kg-1 i.v.). The peripheral chemoreflex was elicited by increasing doses of KCN (20-160 μg kg min-1 , i.v.). At baseline, R-PR rats presented increased heart rate and minute ventilation (372 ± 34 beats min-1 and 1.274 ± 377 ml kg-1 min-1 ) compared with CG105 animals (332 ± 22 beats min-1 and 856 ± 112 ml kg-1 min-1 ). Mean arterial pressure was not different between the groups. Pressor and bradycardic responses evoked by KCN (60 μg kg-1 ) were increased in R-PR (+45 ± 13 mmHg and -77 ± 47 beats min-1 ) compared with CG105 rats (+25 ± 17 mmHg and -27 ± 28 beats min-1 ), but no difference was found in the tachypnoeic response. These differences were preserved after losartan. The data suggest that angiotensin II acting on AT1 receptors may not be associated with the increased heart rate, increased minute ventilation and acute cardiovascular responses to peripheral chemoreflex activation in rats that underwent postweaning protein restriction followed by recovery.
Collapse
Affiliation(s)
- Renato Willian Martins Sá
- Department of Biological Sciences, ICEB/NUPEB, Federal University of Ouro Preto - Campus Universitário Morro do Cruzeiro, 35, 400-000, Ouro Preto, MG, Brazil
| | - Andrea Siqueira Haibara
- Department of Physiology and Biophysics, ICB, Federal University of Minas Gerais, 31, 270-910, Belo Horizonte, MG, Brazil
| | - Paula Magalhães Gomes
- Department of Biological Sciences, ICEB/NUPEB, Federal University of Ouro Preto - Campus Universitário Morro do Cruzeiro, 35, 400-000, Ouro Preto, MG, Brazil
| | - Giovana Lopes Aguiar
- Department of Biological Sciences, ICEB/NUPEB, Federal University of Ouro Preto - Campus Universitário Morro do Cruzeiro, 35, 400-000, Ouro Preto, MG, Brazil
| | - Rafael Souza Leopoldino Nascimento
- Department of Biological Sciences, ICEB/NUPEB, Federal University of Ouro Preto - Campus Universitário Morro do Cruzeiro, 35, 400-000, Ouro Preto, MG, Brazil
| | - Maria Lucia Pedrosa
- Department of Biological Sciences, ICEB/NUPEB, Federal University of Ouro Preto - Campus Universitário Morro do Cruzeiro, 35, 400-000, Ouro Preto, MG, Brazil
| | - Andréia Carvalho Alzamora
- Department of Biological Sciences, ICEB/NUPEB, Federal University of Ouro Preto - Campus Universitário Morro do Cruzeiro, 35, 400-000, Ouro Preto, MG, Brazil
| | - Lisandra Brandino de Oliveira
- Department of Biological Sciences, ICEB/NUPEB, Federal University of Ouro Preto - Campus Universitário Morro do Cruzeiro, 35, 400-000, Ouro Preto, MG, Brazil
| | - Leonardo Máximo Cardoso
- Department of Biological Sciences, ICEB/NUPEB, Federal University of Ouro Preto - Campus Universitário Morro do Cruzeiro, 35, 400-000, Ouro Preto, MG, Brazil
| |
Collapse
|