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da Silveira ALB, Seara FAC, Lustrino D, Mecawi AS, Antunes-Rodrigues J, Kettelhut ÍC, Chakur-Brum P, Reis LC, Olivares EL. Thyroid hormone induces restrictive cardiomyopathy in β1-adrenoceptor knockout mice. Can J Physiol Pharmacol 2023; 101:620-629. [PMID: 37747059 DOI: 10.1139/cjpp-2023-0153] [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] [Indexed: 09/26/2023]
Abstract
The purpose of this study was to characterize the role of β1-AR signaling and its cross-talk between cardiac renin-angiotensin system and thyroid-hormone-induced cardiac hypertrophy. T3 was administered at 0.5 mg·kg-1·day-1 for 10 days in β1-KOT3 and WTT3 groups, while control groups received vehicle alone. Echocardiography and myocardial histology was performed; cardiac and serum ANGI/ANGII and ANP and cardiac levels of p-PKA, p-ERK1/2, p-p38-MAPK, p-AKT, p-4EBP1, and ACE were measured. WTT3 showed decreased IVSTd and increased LVEDD versus WTsal (p < 0.05). β1-KOT3 exhibited lower LVEDD and higher relative IVSTd versus β1-KOsal, the lowest levels of ejection fraction, and the highest levels of cardiomyocyte diameter (p < 0.05). Cardiac ANP levels decreased in WTT3 versus β1-KOT3 (p < 0.05). Cardiac ACE expression was increased in T3-treated groups (p < 0.05). Phosphorylated-p38 MAPK levels were higher in WTT3 versus WTsal or β1-KOT3, p-4EBP1 was elevated in β1-KO animals, and p-ERK1/2 was up-regulated in β1-KOT3. These findings suggest that β1-AR signaling is crucial for TiCH.
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Affiliation(s)
- Anderson L B da Silveira
- Departamento de Educação Física e Desportos, Instituto de Educação, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brasil
- Programa de Pós-graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Brasil
- Departmento de Ciências Fisiológicas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brasil
| | - Fernando A C Seara
- Programa de Pós-graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Brasil
- Departmento de Ciências Fisiológicas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brasil
| | - Danilo Lustrino
- Departmento de Fisiologia, Centro de Ciências Biológicas e da Saúde, Universidade Federal do Sergipe, São Cristóvão, Sergipe, Brasil
| | - André S Mecawi
- Departamento de Biofísica, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brasil
| | - José Antunes-Rodrigues
- Departamento de Fisiologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeiro Preto, São Paulo, Brasil
| | - Ísis C Kettelhut
- Departmento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brasil
| | - Patrícia Chakur-Brum
- Escola de Educação Física e Esporte, Universidade de São Paulo, São Paulo, São Paulo, Brasil
| | - Luis C Reis
- Programa de Pós-graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Brasil
- Departmento de Ciências Fisiológicas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brasil
| | - Emerson L Olivares
- Programa de Pós-graduação Multicêntrico em Ciências Fisiológicas, Sociedade Brasileira de Fisiologia, Brasil
- Departmento de Ciências Fisiológicas, Instituto de Ciências Biológicas e da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brasil
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Carneiro-Ramos MS, Silva VB, Santos RAS, Barreto-Chaves MLM. Tissue-specific modulation of angiotensin-converting enzyme (ACE) in hyperthyroidism. Peptides 2006; 27:2942-9. [PMID: 16730861 DOI: 10.1016/j.peptides.2006.04.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2006] [Revised: 04/19/2006] [Accepted: 04/20/2006] [Indexed: 10/24/2022]
Abstract
We have previously demonstrated the interaction between the RAS and thyroid hormones (TH). The present study was designed to determine the role of TH in the local regulation of ACE activity and expression in different tissues. Adult male Wistar rats were randomized into three groups: T4-25 and T4-100 (0.025 and 0.100mg/kg of body weight/day of l-thyroxine for 14 days, respectively) and control. Hemodynamic parameters as well as cardiac and renal hypertrophy were evaluated. ACE activity and mRNA levels were determined by Fluorimetric and Northern blot assays, respectively. Both doses increased SBP and HR, as well as inducing cardiac and renal hypertrophy. Pulmonary and serum ACE levels were comparable among the groups. Both doses promoted increased renal ACE activity and expression but surprisingly ACE was diminished in the heart in both hyperthyroid groups. This change was mediated by a tissue-specific transcription mechanism.
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Affiliation(s)
- M S Carneiro-Ramos
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, Universidade de São Paulo, São Paulo 05508-900, Brazil
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