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Tamargo J, Villacastín J, Caballero R, Delpón E. Drug-induced atrial fibrillation. A narrative review of a forgotten adverse effect. Pharmacol Res 2024; 200:107077. [PMID: 38244650 DOI: 10.1016/j.phrs.2024.107077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/22/2023] [Accepted: 01/12/2024] [Indexed: 01/22/2024]
Abstract
Atrial fibrillation (AF) is the most common cardiac arrhythmia and is associated with an increased morbidity and mortality. There is clinical evidence that an increasing number of cardiovascular and non-cardiovascular drugs, mainly anticancer drugs, can induce AF either in patients with or without pre-existing cardiac disorders, but drug-induced AF (DIAF) has not received the attention that it might deserve. In many cases DIAF is asymptomatic and paroxysmal and patients recover sinus rhythm spontaneously, but sometimes, DIAF persists, and it is necessary to perform a cardioversion. Furthermore, DIAF is not mentioned in clinical guidelines on the treatment of AF. The risk of DIAF increases in elderly and in patients treated with polypharmacy and with risk factors and comorbidities that commonly coexist with AF. This is the case of cancer patients. Under these circumstances ascribing causality of DIAF to a given drug often represents a clinical challenge. We review the incidence, the pathophysiological mechanisms, risk factors, clinical relevance, and treatment of DIAF. Because of the limited information presently available, further research is needed to obtain a deeper insight into DIAF. Meanwhile, it is important that clinicians are aware of the problem that DIAF represents, recognize which drugs may cause DIAF, and consider the possibility that a drug may be responsible for a new-onset AF episode.
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Affiliation(s)
- Juan Tamargo
- Department of Pharmacology and Toxicology, School of Medicine, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Gregorio Marañón, CIBERCV, 28040 Madrid, Spain
| | - Julián Villacastín
- Hospital Clínico San Carlos, CardioRed1, Universidad Complutense de Madrid, CIBERCV, 28040 Madrid, Spain
| | - Ricardo Caballero
- Department of Pharmacology and Toxicology, School of Medicine, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Gregorio Marañón, CIBERCV, 28040 Madrid, Spain.
| | - Eva Delpón
- Department of Pharmacology and Toxicology, School of Medicine, Universidad Complutense de Madrid, Instituto de Investigación Sanitaria Gregorio Marañón, CIBERCV, 28040 Madrid, Spain
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2
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Švorc P, Grešová S, Švorc P. Heart rate variability in male rats. Physiol Rep 2023; 11:e15827. [PMID: 37735345 PMCID: PMC10514026 DOI: 10.14814/phy2.15827] [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: 05/30/2023] [Revised: 09/09/2023] [Accepted: 09/12/2023] [Indexed: 09/23/2023] Open
Abstract
The cardiovascular system is primarily controlled by the autonomic nervous system, and any changes in sympathetic or parasympathetic activity also have an impact on myocardial activity. Heart rate variability (HRV) is a readily available metric used to assess heart rate control by the autonomic nervous system. HRV can provide information about neural (parasympathetic, sympathetic, reflex) and humoral (hormones, thermoregulation) control of myocardial activity. Because there are no relevant reference values for HRV parameters in rats in the scientific literature, all experimental results are only interpreted on the basis of changes from currently measured control or baseline HRV values, which are, however, significantly different in individual studies. Considering the significant variability of published HRV data, the present study focused primarily on comparing control or baseline HRV values under different conditions in in vivo experiments involving rats. The aim of the study was therefore to assess whether there are differences in the starting values before the experiment itself.
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Affiliation(s)
- Pavol Švorc
- Department of Physiology and Pathophysiology, Faculty of MedicineOstrava UniversityOstravaCzech Republic
| | - Soňa Grešová
- Department of Physiology, Faculty of MedicineUniversity PJ SafarikaKosiceSlovak Republic
| | - Pavol Švorc
- Department of Physiology and Pathophysiology, Faculty of MedicineOstrava UniversityOstravaCzech Republic
- Department of Physiology, Faculty of MedicineUniversity PJ SafarikaKosiceSlovak Republic
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3
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Stojko M, Nocoń J, Piłat P, Szpila G, Smolarczyk J, Żmudka K, Moll M, Hawranek M. Innovative Reports on the Effects of Anabolic Androgenic Steroid Abuse-How to Lose Your Mind for the Love of Sport. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1439. [PMID: 37629729 PMCID: PMC10456445 DOI: 10.3390/medicina59081439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/25/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023]
Abstract
Anabolic-androgenic steroids (anabolic-androgenic steroids, AAS) are testosterone-derived compounds whose popularity and use are constantly growing. Chronic use of AAS leads to many hormonal and metabolic disorders in the human body, which often lead to permanent health damage. Changes affect the following systems: cardiovascular, musculoskeletal, reproductive, digestive, and nervous. We decided to collect the existing knowledge in the literature and enrich it with the latest research reports in the field of degenerative effects of AAS on the nervous system. The work aimed to increase public awareness of the dangers and consequences of AAS use and improve it with the latest research on the neurodegenerative effects of AAS. We hope that our work will contribute to raising public awareness and reducing the use of AAS.
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Affiliation(s)
- Michał Stojko
- Student’s Scientific Society, III Department of Cardiology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
| | - Jakub Nocoń
- Student’s Scientific Society, Department of Psychiatry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
| | - Patrycja Piłat
- Student’s Scientific Society, III Department of Cardiology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
| | - Gabriela Szpila
- Student’s Scientific Society, Department of Psychiatry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
| | - Joanna Smolarczyk
- Department of Psychiatry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 50-055 Katowice, Poland
| | - Karol Żmudka
- Student’s Scientific Society, Department of Psychiatry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
| | - Martyna Moll
- Student’s Scientific Society, Department of Psychiatry, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
| | - Michał Hawranek
- III Department of Cardiology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
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Bavaresco Gambassi B, Gonçalves E Silva DCG, Sá CA, Bezerra RR, de Freitas CB, Costa MS, Marques PRDS, da Silva PPR, Guimarães MP, Almeida FDJF, Leite RD, Sobral Filho DC, Schwingel PA. Impaired Cardiovascular Parameters in Resistance Training Practitioners Who Take Ergogenic Aids. J Cardiovasc Dev Dis 2023; 10:jcdd10030113. [PMID: 36975877 PMCID: PMC10058636 DOI: 10.3390/jcdd10030113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/09/2022] [Accepted: 11/28/2022] [Indexed: 03/29/2023] Open
Abstract
BACKGROUND Although there are studies on blood pressure (BP) and autonomic cardiac control (ACC) impairments caused by ergogenic aids, research has scarcely addressed this analysis during sleep. This study analyzed BP and ACC during sleep and wake periods in three groups of resistance training (RT) practitioners: ergogenic aid non-users, thermogenic supplement (TS) self-users, and anabolic-androgenic steroid (AAS) self-users. METHODS RT practitioners were selected for the Control Group (CG; n = 15), TS self-users Group (TSG; n = 15), and AAS self-users Group (AASG; n = 15). All individuals underwent cardiovascular Holter monitoring (BP, ACC) during sleep and wake periods. RESULTS The maximum systolic BP (SBP) during sleep was higher in AASG (p < 0.01) than CG (p < 0.001). CG had lower mean diastolic BP (DBP) than TSG (p < 0.01) and lower mean SBP (p = 0.009) than the other groups. Additionally, CG had higher values (p < 0.01) than TSG and AASG for SDNN and pNN50 during sleep. HF, LF, and LF/HF ratio values during sleep were statistically different in CG (p < 0.001) from the other groups. CONCLUSIONS Our findings demonstrate that high doses of TS and AAS can impair cardiovascular parameters during sleep in RT practitioners who take ergogenic aids.
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Affiliation(s)
- Bruno Bavaresco Gambassi
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina 56328-900, PE, Brazil
- Programa de Pós-Graduação em Gestão de Programas e Serviços de Saúde (PPGGPSS), CEUMA, São Luís 65075-120, MA, Brazil
- Departamento de Artes e Educação Física (DAEF), Universidade Estadual do Maranhão (UEMA), São Luís 65055-970, MA, Brazil
| | - Daniela Conceição Gomes Gonçalves E Silva
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina 56328-900, PE, Brazil
- Programa de Pós-Graduação em Ciências da Saúde (PPGCS), UPE, Recife 50100-130, PE, Brazil
| | - Camila Almeida Sá
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina 56328-900, PE, Brazil
| | - Roberto Rodrigues Bezerra
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina 56328-900, PE, Brazil
| | - Cleilson Barbosa de Freitas
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina 56328-900, PE, Brazil
| | - Marcelo Silva Costa
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina 56328-900, PE, Brazil
| | | | - Pedro Paulo Ramos da Silva
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina 56328-900, PE, Brazil
| | - Manoel Pereira Guimarães
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina 56328-900, PE, Brazil
| | | | - Richard Diego Leite
- Laboratório de Força e Condicionamento, Centro de Educação Física e Desportos (CEFD), Universidade Federal do Espírito Santo (UFES), Vitória 29075-910, ES, Brazil
| | | | - Paulo Adriano Schwingel
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina 56328-900, PE, Brazil
- Programa de Pós-Graduação em Ciências da Saúde (PPGCS), UPE, Recife 50100-130, PE, Brazil
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Differences in Nervous Autonomic Control in Response to a Single Session of Exercise in Bodybuilders Using Anabolic Androgenic Steroids. J Hum Kinet 2021; 80:93-101. [PMID: 34868420 PMCID: PMC8607776 DOI: 10.2478/hukin-2021-0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Considering the role of autonomic nerve activity in blood pressure control, this study aimed to investigate the cardiac autonomic nerve responses after an aerobic exercise session in Anabolic Androgenic Steroids (AAS) users. Twenty men (AAS, n = 9; control group, n = 11) performed an aerobic exercise session (60 min, 70 to 80% of HRmax). Heart rate variability (HRV) was assessed before and during a 60-min post-exercise recovery period. RMSSD (root mean square successive difference of the RR intervals) and the LF/HF ratio (low frequency/high frequency spectra) were also evaluated. The Student's t-test for independent samples was used to compare differences between initial group characteristics. Repeated measures ANOVA was used to compare pre- and post-exercise HRV recovery (p < 0.05). AAS had a lower SDNN (standard deviation of the intervals) (40.8 ± 16.8 vs. 71.6 ± 24.7 ms; p = 0.04, d = 1.4) and a higher LF/HF (3.4 ± 2.1 vs. 1.8 ± 0.9%; p = 0.03, d = 0.9) before exercise. AAS and controls had similar RMSSD (14.0 ± 15.8 vs. 18.9 ± 12.1 ms; p = 0.20) and a LF/HF (2.8 ± 1.6 vs. 2.4 ± 1.2 ms; p = 0.41) immediately post-exercise. The between-groups comparison revealed a higher HF/LF at 30 min (4.3 ± 1.4 vs. 2.5 ± 1.3%; p = 0.008, d = 1.3) and 60 min (5.0 ± 2.2 vs. 2.3 ± 0.8%; p = 0.001, d = 1.6) for the AAS group in the recovery time. This study demonstrated impaired parasympathetic activity at rest and immediately after the exercise session as an adverse effect of AAS usage, but similar behavior regarding the restoration of sympathetic activity.
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6
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Louzada RA, Padron AS, Marques-Neto SR, Maciel L, Werneck-de-Castro JP, Ferreira ACF, Nascimento JHM, Carvalho DP. 3,5-Diiodothyronine protects against cardiac ischaemia-reperfusion injury in male rats. Exp Physiol 2021; 106:2185-2197. [PMID: 34605090 DOI: 10.1113/ep089589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 09/28/2021] [Indexed: 12/19/2022]
Abstract
NEW FINDINGS What is the central question of this study? 3,5-Diiodothyronine (3,5-T2) administration increases resting metabolic rate, prevents or treats liver steatosis in rodent models, and ameliorates insulin resistance: what are its effects on cardiac electrical and contractile properties and autonomic regulation? What is the main finding and its importance? Chronic 3,5-T2 administration has no adverse effects on cardiac function. Remarkably, 3,5-T2 improves the autonomous control of the rat heart and protects against ischaemia-reperfusion injury. ABSTRACT The use of 3,5,3'-triiodothyronine (T3) and thyroxine (T4) to treat metabolic diseases has been hindered by potential adverse effects on liver, lipid metabolism and cardiac electrical properties. It is recognized that 3,5-diiodothyronine (3,5-T2) administration increases resting metabolic rate, prevents or treats liver steatosis in rodent models and ameliorates insulin resistance, suggesting 3,5-T2 as a potential therapeutic tool. However, a comprehensive assessment of cardiac electrical and contractile properties has not been made so far. Three-month-old Wistar rats were daily administered vehicle, 3,5-T2 or 3,5-T2+T4 and no signs of atrial or ventricular arrhythmia were detected in non-anaesthetized rats during 90 days. Cardiac function was preserved as heart rate, left ventricle diameter and shortening fraction in 3,5-T2-treated rats compared to vehicle and 3,5-T2+T4 groups. Power spectral analysis indicated an amelioration of the heart rate variability only in 3,5-T2-treated rats. An increased baroreflex sensitivity at rest was observed in both 3,5-T2-treated groups. Finally, 3,5-T2 Langendorff-perfused hearts presented a significant recovery of left ventricular function and remarkably smaller infarction area after ischaemia-reperfusion injury. In conclusion, chronic 3,5-T2 administration ameliorates tonic cardiac autonomic control and confers cardioprotection against ischaemia-reperfusion injury in healthy male rats.
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Affiliation(s)
- Ruy Andrade Louzada
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Laboratório de Biologia do Exercício, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Division of Endocrinology, Diabetes and Metabolism, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Alvaro Souto Padron
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Silvio Rodrigues Marques-Neto
- Laboratório de Biologia do Exercício, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Programa de Pós-Graduação em Ciências da Atividade Física, Niterói, RJ, Brazil.,Universidade Estácio de Sá (UNESA), Laboratório de Fisiologia do Exercício (LAFIEX), Curso de Educação Física, Rio de Janeiro, Brazil
| | - Leonardo Maciel
- Laboratório de Biologia do Exercício, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,NUMPEX, Campus Duque de Caxias, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - João Pedro Werneck-de-Castro
- Laboratório de Biologia do Exercício, Escola de Educação Física e Desportos, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,Division of Endocrinology, Diabetes and Metabolism, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Andrea Claudia Freitas Ferreira
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.,NUMPEX, Campus Duque de Caxias, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Jose Hamilton Matheus Nascimento
- Laboratório de Eletrofisiologia Cardíaca Antonio Paes de Carvalho, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Denise Pires Carvalho
- Laboratório de Fisiologia Endócrina Doris Rosenthal, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Ferraz AP, Seara FAC, Baptista EF, Barenco TS, Sottani TBB, Souza NSC, Domingos AE, Barbosa RAQ, Takiya CM, Couto MT, Resende GO, Campos de Carvalho AC, Ponte CG, Nascimento JHM. BK Ca Channel Activation Attenuates the Pathophysiological Progression of Monocrotaline-Induced Pulmonary Arterial Hypertension in Wistar Rats. Cardiovasc Drugs Ther 2021; 35:719-732. [PMID: 33245463 DOI: 10.1007/s10557-020-07115-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/16/2020] [Indexed: 02/08/2023]
Abstract
PURPOSE In the present study, the therapeutic efficacy of a selective BKCa channel opener (compound X) in the treatment of monocrotaline (MCT)-induced pulmonary arterial hypertension (PAH) was investigated. METHODS PAH was induced in male Wistar rats by a single injection of MCT. After two weeks, the MCT-treated group was divided into two groups that were either treated with compound X or vehicle. Compound X was administered daily at 28 mg/kg. Electrocardiographic, echocardiographic, and haemodynamic analyses were performed; ex vivo evaluations of pulmonary artery reactivity, right ventricle (RV) and lung histology as well as expression levels of α and β myosin heavy chain, brain natriuretic peptide, and cytokines (TNFα and IL10) in heart tissue were performed. RESULTS Pulmonary artery rings of the PAH group showed a lower vasodilatation response to acetylcholine, suggesting endothelial dysfunction. Compound X promoted strong vasodilation in pulmonary artery rings of both control and MCT-induced PAH rats. The untreated hypertensive rats presented remodelling of pulmonary arterioles associated with increased resistance to pulmonary flow; increased systolic pressure, hypertrophy and fibrosis of the RV; prolongation of the QT and Tpeak-Tend intervals (evaluated during electrocardiogram); increased lung and liver weights; and autonomic imbalance with predominance of sympathetic activity. On the other hand, treatment with compound X reduced pulmonary vascular remodelling, pulmonary flow resistance and RV hypertrophy and afterload. CONCLUSION The use of a selective and potent opener to activate the BKCa channels promoted improvement of haemodynamic parameters and consequent prevention of RV maladaptive remodelling in rats with MCT-induced PAH.
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Affiliation(s)
- Ana Paula Ferraz
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Fernando A C Seara
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Department of Physiological Sciences, Federal Rural University of Rio de Janeiro, Seropedica, RJ, Brazil
| | - Emanuelle F Baptista
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Thais S Barenco
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Thais B B Sottani
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Natalia S C Souza
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ainá E Domingos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Raiana A Q Barbosa
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Christina M Takiya
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marcos T Couto
- Campus Rio de Janeiro, Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Gabriel O Resende
- Campus Rio de Janeiro, Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | | | - Cristiano G Ponte
- Campus Rio de Janeiro, Federal Institute of Education, Science and Technology of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Jose Hamilton M Nascimento
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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Esposito M, Licciardello G, Privitera F, Iannuzzi S, Liberto A, Sessa F, Salerno M. Forensic Post-Mortem Investigation in AAS Abusers: Investigative Diagnostic Protocol. A Systematic Review. Diagnostics (Basel) 2021; 11:diagnostics11081307. [PMID: 34441242 PMCID: PMC8393338 DOI: 10.3390/diagnostics11081307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/15/2021] [Accepted: 07/18/2021] [Indexed: 12/22/2022] Open
Abstract
Anabolic–androgenic steroids (AASs) are a group of synthetic molecules derived from testosterone and its precursors. AASs are widely used illicitly by adolescents and athletes, especially by bodybuilders; AASs are among the most used drugs for improving physical performance, as well as for aesthetic purposes. The use of AASs by professional and recreational athletes is increasing worldwide. This review focused on deaths related to AAS abuse and to investigation of the autopsy results and histopathological findings using a rigorous methodology protocol covering: a complete autopsy, histological analysis, and a broad toxicological investigation. Moreover, we aimed to define an investigative diagnostic protocol supporting forensic pathologists during the post-mortem investigation of AAS abusers. This review was conducted using PubMed Central and Google Scholar databases to find articles published between 1 January 1968 and 30 June 2021, using the following key terms: “(anabolic-androgenic steroids) AND (autopsy); (anabolic-androgenic steroids) AND (forensic)”. A total of 939 articles were screened and 926 did not meet the inclusion criteria. In conclusion, 14 articles were included in this systematic review, reporting 137 fatal cases of AAS abuse in total. The histopathologic studies showed myocardial damage characterized by myocyte hypertrophy, focal myocyte damage with myofibrillar loss, interstitial fibrosis, mostly subepicardial, and small vessel disease. Indeed, in AAS-related cases, autopsy plays a pivotal role in the study of AAS adverse effects and organ damage related to their use or abuse. This systematic review aimed to define a specific workflow in death cases related to AASs, suggesting important future insights to better clarify sudden deaths related to AASs, such as the use of miRNAs. The forensic community needs a unified approach in cases of suspected death related to the use of AASs. There are several occasions to apply this workflow, for example in cases of death of bodybuilders and of young people who die in gymnasiums or during sports activities.
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Affiliation(s)
- Massimiliano Esposito
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, Institute of Legal Medicine, University of Catania, 95123 Catania, Italy; (M.E.); (G.L.); (F.P.); (S.I.); (A.L.)
| | - Gabriele Licciardello
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, Institute of Legal Medicine, University of Catania, 95123 Catania, Italy; (M.E.); (G.L.); (F.P.); (S.I.); (A.L.)
| | - Federico Privitera
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, Institute of Legal Medicine, University of Catania, 95123 Catania, Italy; (M.E.); (G.L.); (F.P.); (S.I.); (A.L.)
| | - Salvatore Iannuzzi
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, Institute of Legal Medicine, University of Catania, 95123 Catania, Italy; (M.E.); (G.L.); (F.P.); (S.I.); (A.L.)
| | - Aldo Liberto
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, Institute of Legal Medicine, University of Catania, 95123 Catania, Italy; (M.E.); (G.L.); (F.P.); (S.I.); (A.L.)
| | - Francesco Sessa
- Department of Clinical and Experimental Medicine, University of Foggia, 71122 Foggia, Italy
- Correspondence: (F.S.); (M.S.); Tel.: +39-0881-736-926 (F.S.); +39-0953-782-060 (M.S.)
| | - Monica Salerno
- Department of Medical, Surgical and Advanced Technologies “G.F. Ingrassia”, Institute of Legal Medicine, University of Catania, 95123 Catania, Italy; (M.E.); (G.L.); (F.P.); (S.I.); (A.L.)
- Correspondence: (F.S.); (M.S.); Tel.: +39-0881-736-926 (F.S.); +39-0953-782-060 (M.S.)
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9
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Kouidi EJ, Kaltsatou A, Anifanti MA, Deligiannis AP. Early Left Ventricular Diastolic Dysfunction, Reduced Baroreflex Sensitivity, and Cardiac Autonomic Imbalance in Anabolic-Androgenic Steroid Users. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18136974. [PMID: 34209901 PMCID: PMC8295852 DOI: 10.3390/ijerph18136974] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/18/2021] [Accepted: 06/25/2021] [Indexed: 12/30/2022]
Abstract
The effects of androgen anabolic steroids (AAS) use on athletes’ cardiac autonomic activity in terms of baroreflex sensitivity (BRS), and heart rate variability (HRV) have not yet been adequately studied. Furthermore, there is no information to describe the possible relationship between the structural and functional cardiac remodeling and the cardiac autonomic nervous system changes caused by AAS abuse. Thus, we aimed to study the effects of long-term AAS abuse on cardiac autonomic efficacy and cardiac adaptations in strength-trained athletes. In total, 80 strength-trained athletes (weightlifters and bodybuilders) participated in the study. Notably, 40 of them using AAS according to their state formed group A, 40 nonuser strength-trained athletes comprised group B, and 40 healthy nonathletes (group C) were used as controls. All subjects underwent a head-up tilt test using the 30 min protocol to evaluate the baroreflex sensitivity and short HRV modulation. Furthermore, all athletes undertook standard echocardiography, a cardiac tissue Doppler imaging (TDI) study, and a maximal spiroergometric test on a treadmill to estimate their maximum oxygen consumption (VO2max). The tilt test results showed that group A presented a significantly lower BRS and baroreflex effectiveness index than group B by 13.8% and 10.7%, respectively (p < 0.05). Regarding short-term HRV analysis, a significant increase was observed in sympathetic activity in AAS users. Moreover, athletes of group A showed increased left ventricular (LV) mass index (LVMI) by 8.9% (p < 0.05), compared to group B. However, no difference was found in LV ejection fraction between the groups. TDI measurements indicated that AAS users had decreased septal and lateral peak E’ by 38.0% (p < 0.05) and 32.1% (p < 0.05), respectively, and increased E/E’ by 32.0% (p < 0.05), compared to group B. This LV diastolic function alteration was correlated with the year of AAS abuse. A significant correlation was established between BRS depression and LV diastolic impairment in AAS users. Cardiopulmonary test results showed that AAS users had significantly higher time to exhaustion by 11.0 % (p < 0.05) and VO2max by 15.1% (p < 0.05), compared to controls. A significant correlation was found between VO2max and LVMI in AAS users. The results of the present study indicated that long-term AAS use in strength-trained athletes led to altered cardiovascular autonomic modulations, which were associated with indices of early LV diastolic dysfunction.
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Adverse Effects of Anabolic-Androgenic Steroids: A Literature Review. Healthcare (Basel) 2021; 9:healthcare9010097. [PMID: 33477800 PMCID: PMC7832337 DOI: 10.3390/healthcare9010097] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 01/03/2021] [Accepted: 01/11/2021] [Indexed: 12/19/2022] Open
Abstract
Anabolic-androgenic steroids (AASs) are a large group of molecules including endogenously produced androgens, such as testosterone, as well as synthetically manufactured derivatives. AAS use is widespread due to their ability to improve muscle growth for aesthetic purposes and athletes’ performance, minimizing androgenic effects. AAS use is very popular and 1–3% of US inhabitants have been estimated to be AAS users. However, AASs have side effects, involving all organs, tissues and body functions, especially long-term toxicity involving the cardiovascular system and the reproductive system, thereby, their abuse is considered a public health issue. The aim of the proposed review is to highlight the most recent evidence regarding the mechanisms of action of AASs and their unwanted effects on organs and lifestyle, as well as suggesting that AAS misuse and abuse lead to adverse effects in all body tissues and organs. Oxidative stress, apoptosis, and protein synthesis alteration are common mechanisms involved in AAS-related damage in the whole body. The cardiovascular system and the reproductive system are the most frequently involved apparatuses. Epidemiology as well as the molecular and pathological mechanisms involved in the neuropsychiatric side-effects of AAS abuse are still unclear, further research is needed in this field. In addition, diagnostically reliable tests for AAS abuse should be standardized. In this regard, to prevent the use of AASs, public health measures in all settings are crucial. These measures consist of improved knowledge among healthcare workers, proper doping screening tests, educational interventions, and updated legislation.
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11
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Seara FAC, Pereira-Junior PP, Silva-Almeida C, Dos-Santos RC, Souza RN, Costa CRM, Domingos AE, Barbosa RAQ, Ferraz AP, Machado AAN, Ceccato VM, Takiya CM, Ponte CG, Reis LC, Olivares EL, Nascimento JHM. Anabolic steroid excess promotes hydroelectrolytic and autonomic imbalance in adult male rats: Is it enough to alter blood pressure? Steroids 2020; 163:108711. [PMID: 32739291 DOI: 10.1016/j.steroids.2020.108711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 07/20/2020] [Accepted: 07/27/2020] [Indexed: 11/29/2022]
Abstract
AIM The present study investigated the effects of anabolic steroid (AS) excess on blood pressure regulation. METHODS Male Wistar rats were treated with nandrolone decanoate (AS) or vehicle (CTL) for 8 or 10 weeks. Saline (1.8%) and water intake were measured in metabolic cages. Urinary volume, osmolarity, Na+ and K+ concentrations, and plasma osmolarity were measured. The autonomic balance was estimated by heart rate variability at baseline or after icv injection of losartan. Cardiac function was assessed by echocardiography and ex vivo recordings. Myocardial collagen deposition was evaluated by Picrosirius-Red staining. Vascular reactivity and wall thickness were investigated in aortic sections. Blood pressure (BP) was assessed by tail-cuff plethysmography. Angiotensin II type I receptor (AT1R), renin, and mineralocorticoid receptor (MR) mRNA expression was measured in the kidneys and whole hypothalamus. RESULTS AS group exhibited decreased urinary volume and Na+ concentration, while urinary K+ concentration, plasma osmolarity, and renal AT1R and renin mRNA levels were increased compared to CTL (p < 0.05). Water intake was increased, and saline intake was decreased in the AS group (p < 0.01). AS group exhibited increased low-frequency/high-frequency-ratio, while it was decreased by icv injection of losartan (p < 0.05) compared to baseline. Neither cardiac function nor vascular reactivity/morphology was affected by AS excess (p > 0.05). Ultimately, BP levels were not altered by AS excess (p > 0.05). CONCLUSION AS excess promoted hydroelectrolytic and autonomic imbalance but did not alter vascular or cardiac function/morphology.
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Affiliation(s)
- Fernando A C Seara
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Brazil; Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil.
| | - Pedro P Pereira-Junior
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
| | - Claudio Silva-Almeida
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Brazil; Estácio de Sá University, Brazil
| | - Raoni C Dos-Santos
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Brazil
| | - Raquel N Souza
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Brazil
| | - César R M Costa
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Brazil; Multicenter Postgraduate Program of Physiological Sciences, Brazilian Society of Physiology, Brazil
| | - Ainá E Domingos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
| | - Raiana A Q Barbosa
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
| | - Ana P Ferraz
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
| | - André A N Machado
- Laboratory of Biochemistry and Gene Expression, University of Ceará, Brazil
| | - Vânia M Ceccato
- Laboratory of Biochemistry and Gene Expression, University of Ceará, Brazil
| | - Christina M Takiya
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
| | - Cristiano G Ponte
- Federal Institute of Education, Science, and Technology of Rio de Janeiro, Brazil
| | - Luis C Reis
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Brazil; Multicenter Postgraduate Program of Physiological Sciences, Brazilian Society of Physiology, Brazil
| | - Emerson L Olivares
- Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Brazil; Multicenter Postgraduate Program of Physiological Sciences, Brazilian Society of Physiology, Brazil
| | - Jose H M Nascimento
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Brazil
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Marques Neto SR, Castiglione RC, da Silva TCB, Paes LDS, Pontes A, Oliveira DF, Ferraz EB, Ade Caldas CC, Nascimento JHM, Bouskela E. Effects of high intensity interval training on neuro-cardiovascular dynamic changes and mitochondrial dysfunction induced by high-fat diet in rats. PLoS One 2020; 15:e0240060. [PMID: 33095799 PMCID: PMC7584217 DOI: 10.1371/journal.pone.0240060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/18/2020] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND AND AIMS Mitochondrial swelling is involved in the pathogenesis of many human diseases associated with oxidative stress including obesity. One of the strategies for prevention of deleterious effects related to obesity and overweight is engaging in regular physical activity, of which high intensity interval training (HIIT) is efficient in promoting biogenesis and improving the function of mitochondria. Therefore, our aims were to investigate the effects of HIIT on metabolic and neuro-cardiovascular dynamic control and mitochondrial swelling induced by high-fat diet (HFD). METHODS AND RESULTS Twenty-three male Wistar rats (60 - 80g) were divided into 4 subgroups: control (C), HIIT, HFD and HFD+HIIT. The whole experimentation period lasted for 22 weeks and HIIT sessions were performed 5 days a week during the last 4 weeks. At the end of the experiments, fasting glucose and insulin tolerance tests were performed. Cerebral microcirculation was analyzed using cortical intravital microscopy for capillary diameter and functional density. Cardiac function and ergoespirometric parameters were also investigated. Mitochondrial swelling was evaluated on brain and heart extracts. HFD promoted an increase on body adiposity (p<0.001), fasting glucose levels (p<0.001), insulin resistance index (p<0.05), cardiac hypertrophy index (p<0.05) and diastolic blood pressure (p<0.05), along with worsened cardiac function (p<0.05), reduced functional cerebral capillary density (p<0.05) and its diameter (p<0.01), and heart and brain mitochondrial function (p<0.001). HFD did not affect any ergoespirometric parameter. After 4 weeks of training, HIIT was able to improve cardiac hypertrophy index, diastolic blood pressure, cerebral functional capillary density (p<0.01) and heart and brain mitochondrial swelling (p<0.001). CONCLUSION In animals subjected to HFD, HIIT ameliorated both cerebral mitochondrial swelling and functional capillary density, but it did not improve cardiovascular function suggesting that the cardiovascular dysfunction elicited by HFD was not due to heart mitochondrial swelling.
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Affiliation(s)
- Silvio R. Marques Neto
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Physical Activity Sciences Laboratory (LACAF), Physical Activity Sciences Postgraduate Program, Salgado de Oliveira University (UNIVERSO), Niteroi, RJ, Brazil
- Exercise Physiology Laboratory, School of Physical Education, Estácio de Sá University, Rio de Janeiro, RJ, Brazil
- Health Science School, Universidade do Grande Rio, Duque de Caxias, RJ, Brazil
| | - Raquel C. Castiglione
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Teresa C. B. da Silva
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Health Science School, Universidade do Grande Rio, Duque de Caxias, RJ, Brazil
| | - Lorena da S. Paes
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Aiza Pontes
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Dahienne F. Oliveira
- Cardiac Electrophysiology Laboratory, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Emanuelle B. Ferraz
- Cardiac Electrophysiology Laboratory, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Carla Christina Ade Caldas
- Physical Activity Sciences Laboratory (LACAF), Physical Activity Sciences Postgraduate Program, Salgado de Oliveira University (UNIVERSO), Niteroi, RJ, Brazil
| | - José Hamilton M. Nascimento
- Cardiac Electrophysiology Laboratory, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Eliete Bouskela
- Laboratory for Clinical and Experimental Research on Vascular Biology (BioVasc), Biomedical Center, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Seara FAC, Olivares EL, Nascimento JHM. Anabolic steroid excess and myocardial infarction: From ischemia to reperfusion injury. Steroids 2020; 161:108660. [PMID: 32492466 DOI: 10.1016/j.steroids.2020.108660] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 05/05/2020] [Accepted: 05/17/2020] [Indexed: 01/06/2023]
Abstract
Anabolic steroids (AS) are synthetic testosterone-derivatives developed by the pharmaceutical industry to mimic testosterone biological effects. So far, AS have been implicated in the treatment of pathological conditions, such as hypogonadism, anemia, and cachexia. Since their discovery, though, AS have been illicitly used by elite and recreational athletes, bodybuilders and weightlifters in order to enhance athletic and aesthetic performance. This practice is characterized by cycles of administration and withdrawal, the combination of different AS compounds, and administration of doses 50 - 1000 times higher than those recommended for therapeutic purposes. AS excess has been correlated to cardiovascular detrimental effects, including cardiac hypertrophy, arrhythmias, and hypertension. Particularly, acute myocardial infarction (AMI) has been extensively reported by clinical and post-mortem studies. Atherosclerosis, hypercoagulability state, increased thrombogenesis and vasospasm have arisen as potential causes of myocardial ischemia in AS users. Additionally, several experimental reports have demonstrated that AS can increase the susceptibility to cardiac ischemia/reperfusion injury, whereas the cardioprotection elicited by physical exercise and ischemic postconditioning is blunted. Altogether, these factors can contribute to increased AMI morbidity and mortality during AS excess, particularly when AS are combined with other compounds, such as thyroid hormones, growth hormones, insulin, and diuretics.
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Affiliation(s)
- Fernando A C Seara
- Laboratory of Cardiovascular Physiology and Pharmacology, Department of Physiological Sciences, Federal Rural University of Rio de Janeiro, Seropédica, RJ, Brazil; Multicenter Graduate Program in Physiological Sciences, Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Seropédica, Brazil; Laboratory of Cardiac Electrophysiology, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Emerson L Olivares
- Laboratory of Cardiovascular Physiology and Pharmacology, Department of Physiological Sciences, Federal Rural University of Rio de Janeiro, Seropédica, RJ, Brazil; Multicenter Graduate Program in Physiological Sciences, Department of Physiological Sciences, Institute of Biological and Health Sciences, Federal Rural University of Rio de Janeiro, Seropédica, Brazil
| | - Jose H M Nascimento
- Laboratory of Cardiac Electrophysiology, Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Akbari Z, Esmailidehaj M, Avarand E, Shariati M, Pourkhalili K. Ischemic Preconditioning Efficacy Following Anabolic Steroid Usage: A Clear Difference Between Sedentary and Exercise-Trained Rat Hearts. Cardiovasc Toxicol 2020; 19:287-296. [PMID: 30535662 DOI: 10.1007/s12012-018-9497-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Previous studies show that anabolic steroids impair innate cardioprotective mechanisms. Here, we investigated the effect of supraphysiological doses of nandrolone on ischemic preconditioning (IPC) as a potent cardioprotective tool against ischemia reperfusion (IR) injury in rat hearts. Male Wistar rats in two experimental settings of sedentary and exercise-trained (60 min/day swimming, 5 days/week, for 8 weeks) were either pretreated with intramuscular injections of arachis oil (Arach, n = 16) as vehicle or nandrolone decanoate (ND, n = 8), 10 mg/kg/week, for 8 weeks. At the end, the hearts were excised and perfused in a Langendorff system. Then, the vehicle-treated hearts subdivided into the IR (30 min of LAD coronary artery occlusion and 120 min reperfusion, n = 8) and IPC (three cycles of 3-min ischemia and 3-min reperfusion before test ischemia, n = 8) groups and nandrolone-treated hearts served as ND + IPC (nandrolone pretreatment before IR and IPC protocols, n = 8) group. Post-ischemic cardiac function and infarct size were assessed. Reperfusion arrhythmias were analyzed using a standard scoring system. In sedentary hearts, ND slightly increased heart-to-body weight ratio and increased baseline cardiac contractile function. In trained hearts, ND markedly increased heart-to-body weight ratio which was also associated with enhanced baseline cardiac function. ND pretreatment enhanced protective effects of IPC in sedentary group; however, abolished these effects in exercise-trained group. The arrhythmia score was not significantly different between nandrolone-treated groups vs. respective preconditioned groups. Our findings show that ND impairs IPC-induced cardioprotection in exercise-trained rat hearts. Cardiac hypertrophy seems to play a crucial role in this response.
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Affiliation(s)
- Zahra Akbari
- Department of Physiology, Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Mansour Esmailidehaj
- Department of Physiology, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Ebrahim Avarand
- Department of Biology, Islamic Azad University, Kazerun, Iran
| | | | - Khalil Pourkhalili
- Department of Physiology, Faculty of Medicine, Bushehr University of Medical Sciences, Bushehr, Iran.
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Pinheiro JL, Maia BP, Lima ABD, Domingues RJDS, Oliveira FRT, Freitas JJDS, Kietzer KS. NANDROLONE DECANOATE IS PROOXIDANT IN THE MYOCARDIUM OF EXERCISED OR SEDENTARY RATS. REV BRAS MED ESPORTE 2020. [DOI: 10.1590/1517-869220202601185347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT Introduction: Nandrolone decanoate is a synthetic testosterone analogue considered one of the most widely used anabolic androgenic steroids (AAS) among adolescents and athletes. Chronic ingestion of AAS increases the incidence of cardiovascular abnormalities in athletes, but the mechanism that causes these changes remains unknown. Objectives: The purpose of this study is to verify the possible effects of the use of anabolic androgenic steroids (AAS) on the morphology and oxidative metabolism of the heart in exercised and sedentary rats. Methods: This is a comparative prospective level II study. Twenty-four Wistar rats were distributed in groups that performed voluntary (TG) and sedentary (SG) running exercises, and used AAS: the Anabolic Training Group (ATG), and the Anabolic Sedentary Group (ASG). During the three months of the running protocol, the animals received an intramuscular injection of 5 mg/kg b.p. of AAS. After the training period, the rats were euthanized and the hearts were removed for evaluation of lipid peroxidation and antioxidant capacity, and for morphometric analysis. Results: The anabolic groups, ASG (0.3072 ± 0.0531) and ATG (0.2732 ± 0.0413), presented higher lipid peroxidation when compared to the non-anabolic groups SG (0.1705 ± 0.0224) and TG (0.1785 ± 0.0340). Conclusion: There was no change in total antioxidant capacity or in the thickness of the interventricular septum and left ventricular wall. Thus, the use of anabolic androgenic steroids did not cause morphological changes in the myocardium. However it did alter the oxidative metabolism. It was also verified that aerobic exercise had no protective effect against lipid peroxidation in the myocardium caused by the use of AAS. Level of evidence II; Prospective comparative study.
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16
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Marocolo M, Katayama PL, Meireles A, Barbosa Neto O. Combined effects of exercise training and high doses of anabolic steroids on cardiac autonomic modulation and ventricular repolarization properties in rats. Can J Physiol Pharmacol 2019; 97:1185-1192. [PMID: 31505126 DOI: 10.1139/cjpp-2019-0286] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Several studies have reported that high doses of synthetic anabolic androgenic steroids (AAS) can have serious negative effects on health, including the cardiovascular system. The aim of this study was to evaluate the combined effects of AAS and exercise training on ventricular repolarization and cardiac autonomic modulation in rats. Male Wistar rats were allocated into 4 groups: sedentary rats treated with vehicle, sedentary rats treated with nandrolone decanoate, swimming-trained rats treated with vehicle, and swimming-trained rats treated with nandrolone decanoate. Ventricular repolarization was evaluated by electrocardiographic analysis of QT interval and QT dispersion. Cardiac autonomic modulation was assessed by heart rate variability. Our results show that AAS increased QT interval and QT dispersion in sedentary rats treated with nandrolone decanoate as compared to sedentary rats treated with vehicle, indicating AAS-induced ventricular repolarization abnormalities. When rats treated with nandrolone decanoate were subjected to concomitant exercise training, ventricular repolarization was normalized. On the other hand, AAS-induced reduction in cardiac parasympathetic modulation was not prevented by exercise training. In conclusion, AAS produced cardiac autonomic dysfunction and ventricular repolarization disturbances in rats. Combining an exercise training protocol during the AAS treatment attenuated the ventricular repolarization abnormalities and did not prevent cardiac autonomic dysfunction.
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Affiliation(s)
- Moacir Marocolo
- Physiology and Human Performance Research Group, Department of Physiology, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Pedro L Katayama
- Department of Physiology and Pathology, School of Dentistry, São Paulo State University, Araraquara, SP, Brazil
| | - Anderson Meireles
- Physiology and Human Performance Research Group, Department of Physiology, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Octávio Barbosa Neto
- Sport Sciences Department, Federal University of Triangulo Mineiro, Uberaba, MG, Brazil
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Seara FAC, Arantes PC, Domingos AE, Barbosa RAQ, Olivares EL, Sudo RT, Campos de Carvalho AC, Nascimento JHM. Cardiac electrical and contractile disorders promoted by anabolic steroid overdose are associated with late autonomic imbalance and impaired Ca 2+ handling. Steroids 2019; 148:1-10. [PMID: 31028764 DOI: 10.1016/j.steroids.2019.04.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 04/02/2019] [Accepted: 04/08/2019] [Indexed: 02/05/2023]
Abstract
AIM Investigate cardiac electrical and mechanical dysfunctions elicited by chronic anabolic steroid (AS) overdose. METHODS Male Wistar rats were treated with nandrolone decanoate (DECA) or vehicle (CTL) for 8 weeks. Electrocardiography and heart rate variability were assessed at weeks 2, 4, and 8. Cardiac reactivity to isoproterenol was investigated in isolated rat hearts. Action potential duration (APD) was measured from left ventricular (LV) muscle strips. L-type Ca2+ current (ICaL), and transient outward potassium current (Ito) were recorded by whole-cell patch-clamp in LV cardiomyocytes. Sarcoplasmic reticulum (SR) Ca2+ mobilization and Ca2+-induced contractile response sensitivity were evaluated in skinned cardiac fibers. Muscarinic type 2 receptor (M2R), β1-adrenergic receptor (β1AR), sarcoplasmic Ca2+ ATPase (SERCA-2a), type 2 ryanodine receptor (RyR2), L-type Ca2+ channel (CACNA1), Kv4.2 (KCND2), and Kv4.3 (KCND3) mRNA expression levels were measured by quantitative RT-PCR. RESULTS Compared with CTL group, DECA group exhibited decreased high frequency band power density (HF) and increased low frequency power density (LF), Cardiac M2R mRNA level was decreased. QTc interval at 2nd, 4th, and 8th week as well as APD30 and APD90 were increased by DECA. Ito density was decreased, while ICaL density was increased by DECA. SR Ca2+ loading and release were decreased by DECA, while contractile sensitivity to Ca2+ was increased versus CTL group. CONCLUSION DECA overdose induced cardiac rhythmic and mechanical abnormalities that can be associated with autonomic imbalance, up-regulated ICaL and down-regulated Ito, abnormal SR Ca2+ mobilization, and increased contractile sensitivity to Ca2+.
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Affiliation(s)
- Fernando A C Seara
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil.
| | - Paulo C Arantes
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Ainá E Domingos
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Raiana A Q Barbosa
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Emerson L Olivares
- Department of Physiological Sciences, Institute of Biology and Health Sciences, Federal Rural University of Rio de Janeiro, Seropedica 23890-000, RJ, Brazil
| | - Roberto T Sudo
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Antonio C Campos de Carvalho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | - Jose H M Nascimento
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
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Gomes Gonçalves e Silva DC, Bavaresco Gambassi B, Dantas MGB, Lima-Oliveira J, Vieira de Carvalho SL, Morais PADO, Sá CA, Cotrim HP, Santos AM, Sobral Filho DC, Schwingel PA. Excessive dietary supplement use and blood pressure among Brazilian male resistance training practitioners and bodybuilders. JOURNAL OF SUBSTANCE USE 2019. [DOI: 10.1080/14659891.2019.1640302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Daniela Conceição Gomes Gonçalves e Silva
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina, Brazil
- Programa de Pós-Graduação em Ciências da Saúde (PPGCS), UPE, Recife, Brazil
| | - Bruno Bavaresco Gambassi
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina, Brazil
- Departamento de Educação Física, Universidade Ceuma, São Luís, Brazil
| | | | - Jhonatan Lima-Oliveira
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina, Brazil
| | | | | | - Camila Almeida Sá
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina, Brazil
| | - Helma Pinchemel Cotrim
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina, Brazil
- Programa de Pós-graduação em Medicina e Saúde (PPgMS), Faculdade de Medicina da Bahia (FMB), Universidade Federal da Bahia (UFBA), Salvador, Brazil
| | - Azenildo Moura Santos
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina, Brazil
- Sociology Department, Goldsmiths University of London, London, UK
| | - Dário Celestino Sobral Filho
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina, Brazil
- Programa de Pós-Graduação em Ciências da Saúde (PPGCS), UPE, Recife, Brazil
| | - Paulo Adriano Schwingel
- Laboratório de Pesquisas em Desempenho Humano (LAPEDH), Universidade de Pernambuco (UPE), Petrolina, Brazil
- Programa de Pós-Graduação em Ciências da Saúde (PPGCS), UPE, Recife, Brazil
- Programa de Pós-graduação em Medicina e Saúde (PPgMS), Faculdade de Medicina da Bahia (FMB), Universidade Federal da Bahia (UFBA), Salvador, Brazil
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dos Santos MR, Sayegh AL, Armani R, Costa-Hong V, de Souza FR, Toschi-Dias E, Bortolotto LA, Yonamine M, Negrão CE, Alves MJN. Resting spontaneous baroreflex sensitivity and cardiac autonomic control in anabolic androgenic steroid users. Clinics (Sao Paulo) 2018; 73:e226. [PMID: 29791601 PMCID: PMC5952050 DOI: 10.6061/clinics/2018/e226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 11/27/2017] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES Misuse of anabolic androgenic steroids in athletes is a strategy used to enhance strength and skeletal muscle hypertrophy. However, its abuse leads to an imbalance in muscle sympathetic nerve activity, increased vascular resistance, and increased blood pressure. However, the mechanisms underlying these alterations are still unknown. Therefore, we tested whether anabolic androgenic steroids could impair resting baroreflex sensitivity and cardiac sympathovagal control. In addition, we evaluate pulse wave velocity to ascertain the arterial stiffness of large vessels. METHODS Fourteen male anabolic androgenic steroid users and 12 nonusers were studied. Heart rate, blood pressure, and respiratory rate were recorded. Baroreflex sensitivity was estimated by the sequence method, and cardiac autonomic control by analysis of the R-R interval. Pulse wave velocity was measured using a noninvasive automatic device. RESULTS Mean spontaneous baroreflex sensitivity, baroreflex sensitivity to activation of the baroreceptors, and baroreflex sensitivity to deactivation of the baroreceptors were significantly lower in users than in nonusers. In the spectral analysis of heart rate variability, high frequency activity was lower, while low frequency activity was higher in users than in nonusers. Moreover, the sympathovagal balance was higher in users. Users showed higher pulse wave velocity than nonusers showing arterial stiffness of large vessels. Single linear regression analysis showed significant correlations between mean blood pressure and baroreflex sensitivity and pulse wave velocity. CONCLUSIONS Our results provide evidence for lower baroreflex sensitivity and sympathovagal imbalance in anabolic androgenic steroid users. Moreover, anabolic androgenic steroid users showed arterial stiffness. Together, these alterations might be the mechanisms triggering the increased blood pressure in this population.
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Affiliation(s)
- Marcelo R. dos Santos
- Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
- *Corresponding author. E-mail:
| | - Ana L.C. Sayegh
- Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | | | - Valéria Costa-Hong
- Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Francis R. de Souza
- Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Edgar Toschi-Dias
- Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Luiz A. Bortolotto
- Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | | | - Carlos E. Negrão
- Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
- Faculdade de Educacao Fisica e Esporte, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Maria-Janieire N.N. Alves
- Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP, BR
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Marocolo M, Silva-Neto JA, Barbosa Neto O. Acute interruption of treatment with nandrolone decanoate is not sufficient to reverse cardiac autonomic dysfunction and ventricular repolarization disturbances in rats. Steroids 2018; 132:12-17. [PMID: 29366731 DOI: 10.1016/j.steroids.2018.01.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/10/2018] [Accepted: 01/16/2018] [Indexed: 11/26/2022]
Abstract
Anabolic androgenic steroids are a class of synthetic compounds derived from testosterone, eventually used by athletes, to improve physical performance. However, anabolic steroids can also modify normal cardiovascular function. Thus, we investigated cardiac electrophysiological and autonomic abnormalities in rats, through a electrocardiographic variability protocol during and after interruption of administration of nandrolone decanoate (DECA) anabolic steroid. Twenty male Wistar rats (60-70 days old) received DECA (10 mg. kg-1i.m) once a week or vehicle, during eight weeks. Electrocardiogram was recorded in conscious rats by a noninvasive method, and time and domain analysis of heart rate variability as well as electrocardiogram intervals (QTc / QTd) were performed. Body mass was lower in treated rats compared to control after 4th and 8th weeks, but not at the end of 14th week. QTc and QTd were longer in DECA group compared to control on 4th, 8th, 11th, but equal on 14th week. Cardiac autonomic dysfunction (vagal attenuation) was present on DECA group after 4th week and did not normalize after interruption of treatment. The animals of DECA group showed a correlation between attenuated parasympathetic modulation and increased correct QT interval. Our data allow us to conclude that long-term treatment with DECA impairs autonomic cardiac physiology, predisposing to cardiovascular risk and sudden death, and interruption of administration does not recovery the normality immediately.
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Affiliation(s)
- Moacir Marocolo
- Physiology and Human Performance Research Group, Department of Physiology, Institute of Biological Sciences, Federal University of Juiz de Fora, Juiz de Fora, Brazil.
| | - Julio A Silva-Neto
- "Paes de Carvalho" Laboratory of Biophysics of Heart, Department of Physiology, Federal University of Sergipe, Aracaju, Brazil
| | - Octávio Barbosa Neto
- Department of Sport Sciences, Federal University of Triângulo Mineiro, Uberaba, Brazil
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21
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PORELLO RAFAELARMANI, DOS SANTOS MARCELORODRIGUES, DE SOUZA FRANCISRIBEIRO, DA FONSECA GUILHERMEWESLEYPEIXOTO, SAYEGH ANALUIZACARRARI, DE OLIVEIRA TIAGOFRANCO, AKIHO CÉSARABREU, YONAMINE MAURÍCIO, PEREIRA ROSAMARIARODRIGUES, NEGRÃO CARLOSEDUARDO, ALVES MARIAJANIEIREDENAZARÉNUNES. Neurovascular Response during Exercise and Mental Stress in Anabolic Steroid Users. Med Sci Sports Exerc 2018; 50:596-602. [DOI: 10.1249/mss.0000000000001456] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Junior JFCR, Silva AS, Cardoso GA, Silvino VO, Martins MCC, Santos MAP. Androgenic-anabolic steroids inhibited post-exercise hypotension: a case control study. Braz J Phys Ther 2018; 22:77-81. [PMID: 28743567 PMCID: PMC5816078 DOI: 10.1016/j.bjpt.2017.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 05/21/2017] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND There is evidence of hypertensive effects caused by anabolic androgenic steroids (AAS). A single exercise session promotes the acute reduction of blood pressure, but the effects of AAS on this phenomenon are unknown. OBJECTIVES To investigate the post-exercise blood pressure response in androgenic-anabolic steroid users. METHODS Thirteen AAS users (23.9±4.3 years old) and sixteen controls (22.1±4.5 years old) performed a session of aerobic exercise. Heart rate and blood pressure were assessed before exercise and during a 60min post-exercise resting period. Repeated ANOVA measures were used to determine differences between the groups. RESULTS While the control group had a significant reduction in post-exercise systolic blood pressure of up to 13.9±11.6mmHg at 40min, this phenomenon was limited among AAS users who reached a maximum of 6.2±11.5mmHg at 60min. The between groups comparison revealed significant higher post-exercise hypotension (PEH) for the control group at 30min (-12.9±14.1mmHg versus -2.9±7.6mmHg), 40min (-13.9±11.6mmHg versus -2.5±8.3mmHg), 50min (-13.9±13.9mmHg versus -5.0±7.9mmHg) and 60min (-12.5±12.8mmHg versus -6.2±11.5mmHg). There was no significant diastolic PEH in any of the groups. CONCLUSIONS This study demonstrated impaired systolic post-exercise hypotension as a new adverse effect of AAS usage.
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Affiliation(s)
- Jefferson F C R Junior
- Universidade Federal do Piauí(UFPI), Campus Universitário Ministro Petrônio Portella, Department of Biophysics and Physiology, Teresina, PI, Brazil
| | - Alexandre S Silva
- Universidade Federal da Paraíba (UFPB), Department of Physical Education, Laboratory of Applied Studies in Physical Training to Performance and Health (LETFADS), João Pessoa, PB, Brazil; Universidade Federal daParaíba (UFPB), Associate Graduate Program in Physical Education (UPE/UFPB), Department of Physical Education, João Pessoa, PB, Brazil
| | - Glêbia A Cardoso
- Universidade Federal da Paraíba (UFPB), Department of Physical Education, Laboratory of Applied Studies in Physical Training to Performance and Health (LETFADS), João Pessoa, PB, Brazil; Universidade Federal daParaíba (UFPB), Associate Graduate Program in Physical Education (UPE/UFPB), Department of Physical Education, João Pessoa, PB, Brazil
| | - Valmir O Silvino
- Universidade Federal do Piauí(UFPI), Campus Universitário Ministro Petrônio Portella, Department of Biophysics and Physiology, Teresina, PI, Brazil
| | - Maria C C Martins
- Universidade Federal do Piauí(UFPI), Campus Universitário Ministro Petrônio Portella, Department of Biophysics and Physiology, Teresina, PI, Brazil
| | - Marcos A P Santos
- Universidade Federal do Piauí(UFPI), Campus Universitário Ministro Petrônio Portella, Department of Biophysics and Physiology, Teresina, PI, Brazil.
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Barbosa Neto O, da Mota GR, De Sordi CC, Resende EAMR, Resende LAPR, Vieira da Silva MA, Marocolo M, Côrtes RS, de Oliveira LF, Dias da Silva VJ. Long-term anabolic steroids in male bodybuilders induce cardiovascular structural and autonomic abnormalities. Clin Auton Res 2017; 28:231-244. [DOI: 10.1007/s10286-017-0470-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 09/12/2017] [Indexed: 10/18/2022]
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24
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Caliman IF, Bernabe CS, de Melo AF, Brasil GA, do Nascimento AM, de Lima EM, Figueiredo SG, de Andrade TU, Bissoli NS. Long-term treatment with Nandrolone Decanoate impairs mesenteric vascular relaxation in both sedentary and exercised female rats. Steroids 2017; 120:7-18. [PMID: 28192127 DOI: 10.1016/j.steroids.2017.02.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Revised: 12/09/2016] [Accepted: 02/01/2017] [Indexed: 12/24/2022]
Abstract
Nandrolone Decanoate (ND) is an Anabolic Androgenic Steroid (AAS) that under abusive regimen can lead to multiple physiological adverse effects. Studies of AAS-mediated cardiovascular (CV) alterations were mostly taken from male subjects, even though women are also susceptible to the effects of AAS and gender-specific differences in susceptibility to vascular diseases exist. Here we investigate ND-induced vascular reactivity alterations in both sedentary and exercised female rats and whether these alterations depend on endothelium-derived factors. We show that chronic exposure of female Wistar rats to ND (20mg/Kg/week for 4weeks) impaired the vascular mesenteric bed (MVB) reactivity to vasodilator (acetylcholine) agonist. The endothelium-dependent Nitric Oxide (NO) component was reduced in ND-treated rats, whereas neither the endothelium-derived hyperpolarizing factor (EDHF) component nor prostanoids were altered in the MVBs. Endothelial dysfunction observed in ND-treated rats was associated with decreased eNOS (Ser1177) and Akt (Ser473) phosphorylation sites and upregulation of iNOS and NADPH oxidase expression. Exercise training by weight lifting in water did not improve the vascular alterations induced by ND treatment. ND treatment also significantly reduced the serum levels of estradiol in females, overriding its CV protective effect. These results help uncover the role of ND modulating endothelial function in the setting of CV disease caused by the abuse of AAS in females. If this translates to humans, young women abusing AAS can potentially lose the cardio protective effect rendered by estrogen and be more susceptible to CV alterations.
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Affiliation(s)
- Izabela F Caliman
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil.
| | - Cristian S Bernabe
- Department of Anatomy & Cell Biology, Paul and Carole Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA; Program in Medical Neurosciences, Paul and Carole Stark Neurosciences Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Antônio F de Melo
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil
| | - Girlândia A Brasil
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil
| | - Andrews M do Nascimento
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil
| | - Ewelyne M de Lima
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil; Department of Pharmaceutical Sciences, University of Vila Velha, Vila Velha, ES, Brazil
| | - Suely G Figueiredo
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil
| | - Tadeu U de Andrade
- Department of Pharmaceutical Sciences, University of Vila Velha, Vila Velha, ES, Brazil
| | - Nazaré S Bissoli
- Department of Physiological Sciences, Federal University of Espirito Santo, Vitória, Espirito Santo, Brazil
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25
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The Effects of Nandrolone Decanoate Along with Prolonged Low-Intensity Exercise on Susceptibility to Ventricular Arrhythmias. Cardiovasc Toxicol 2016; 16:23-33. [PMID: 25636207 DOI: 10.1007/s12012-015-9313-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
We examined the influence of chronic administration of nandrolone decanoate with low-intensity endurance swimming exercise on susceptibility to lethal ventricular arrhythmias in rat. The animal groups included the control group, exercise group (EX), nandrolone group (Nan), vehicle group (Arach), trained vehicle group (Arach + Ex) and trained nandrolone group (Nan + Ex) that treated for 8 weeks. Then, arrhythmia induction was performed by intravenous infusion of aconitine and electrocardiogram recorded. Then, malondialdehyde (MDA), hydroxyproline (HYP) and glutathione peroxidase of heart tissue were measured. Chronic administration of nandrolone with low-intensity endurance swimming exercise had no significant effect on blood pressure, heart rate and basal ECG parameters except RR interval that showed increase (P < 0.05). Low-intensity exercise could prevent the incremental effect of nandrolone on MDA and HYP significantly. It also increased the heart hypertrophy index (P < 0.05) and reduced the abating effect of nandrolone on animal weighting. Nandrolone along with exercise significantly increased the duration of VF (P < 0.05) and reduced the VF latency (P < 0.05). The findings suggest that chronic co-administration of nandrolone with low-intensity endurance swimming exercise to some extent facilitates the occurrence of ventricular fibrillation in rat. Complementary studies are needed to elucidate the involved mechanisms of this abnormality.
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do Carmo JM, da Silva AA, Moak SP, Houghton HJ, Smith A, Hall JE. Regulation of Blood Pressure, Appetite, and Glucose by CNS Melanocortin System in Hyperandrogenemic Female SHR. Am J Hypertens 2016; 29:832-40. [PMID: 26584577 DOI: 10.1093/ajh/hpv182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 10/20/2015] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Hyperandrogenemia in females may be associated with sympathetic nervous system (SNS) activation and increased blood pressure (BP). However the importance of hyperandrogenemia in causing hypertension in females and the mechanisms involved are still unclear. We tested whether chronic hyperandrogenemia exacerbates hypertension in young female spontaneously hypertensive rats (SHR) and whether endogenous melanocortin-3/4 receptor (MC3/4R) activation contributes to the elevated BP. METHODS Cardiovascular and metabolic effects of chronic MC3/4R antagonism were assessed in female SHR treated with dihydrotestosterone (DHT, beginning at 5 weeks of age) and placebo-treated female SHR. BP and heart rate (HR) were measured by telemetry and an intracerebroventricular (ICV) cannula was placed in the lateral ventricle for infusions. After control measurements, the MC3/4R antagonist (SHU-9119) was infused for 10 days (1 nmol/hour, ICV, at 15 weeks of age) followed by a 5-day recovery period. RESULTS MC3/4R antagonism increased food intake and body weight in DHT-treated SHR (14±1 to 35±1g/day and 244±3 to 298±8g) and controls (14±1 to 34±2g/day and 207±4 to 269±8g). Compared to untreated SHR, DHT-treated SHR had similar BP but lower HR (146±3 vs. 142±4mm Hg and 316±2 vs. 363±4 bpm). Chronic SHU-9119 infusion reduced BP and HR in DHT-treated SHR (-12±2mm Hg and -14±4 bpm) and control female SHR (-19±2mm Hg and -21±6 bpm). CONCLUSION These results indicate that hyperandrogenemia does not exacerbate hypertension in female SHR. MC3/4R antagonism reduces BP and HR despite marked increases in food intake and body weight in hyperandrogenemic and control female SHR.
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Affiliation(s)
- Jussara M do Carmo
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA;
| | - Alexandre A da Silva
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA; Barão de Mauá University Center, Ribeirão Preto, São Paulo, Brazil
| | - Sydney P Moak
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Haley J Houghton
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - Andrew Smith
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA; Department of Radiology, University of Mississippi Medical Center, Jackson, Mississippi, USA
| | - John E Hall
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, Cardiovascular-Renal Research Center, University of Mississippi Medical Center, Jackson, Mississippi, USA
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Nascimento AMD, Lima EMD, Brasil GA, Caliman IF, Silva JFD, Lemos VS, Andrade TUD, Bissoli NS. Serca2a and Na+/Ca2+ exchanger are involved in left ventricular function following cardiac remodelling of female rats treated with anabolic androgenic steroid. Toxicol Appl Pharmacol 2016; 301:22-30. [DOI: 10.1016/j.taap.2016.04.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 03/16/2016] [Accepted: 04/01/2016] [Indexed: 11/16/2022]
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28
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Souza NS, Dos-Santos RC, Silveira ALBD, R SC, Gantus MAV, Fortes FS, Olivares EL. Effects of autonomic balance and fluid and electrolyte changes on cardiac function in infarcted rats: A serial study of sexual dimorphism. Clin Exp Pharmacol Physiol 2016; 43:476-83. [DOI: 10.1111/1440-1681.12543] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 10/29/2015] [Accepted: 01/05/2016] [Indexed: 11/29/2022]
Affiliation(s)
- NS Souza
- Multicentre Graduate Program in Physiological Sciences; Department of Physiological Sciences; Institute of Biological and Health Sciences; Federal Rural University of Rio de Janeiro; Seropédica Brazil
| | - RC Dos-Santos
- Graduate Program in Physiological Sciences; Department of Physiological Sciences; Institute of Biological and Health Sciences; Federal Rural University of Rio de Janeiro; Seropédica Brazil
| | - Anderson Luiz Bezerra da Silveira
- Multicentre Graduate Program in Physiological Sciences; Department of Physiological Sciences; Institute of Biological and Health Sciences; Federal Rural University of Rio de Janeiro; Seropédica Brazil
| | - Sonoda-Côrtes R
- Multicentre Graduate Program in Physiological Sciences; Department of Physiological Sciences; Institute of Biological and Health Sciences; Federal Rural University of Rio de Janeiro; Seropédica Brazil
| | - Michel Alexandre Villani Gantus
- Therapy and Cellular and Molecular Physiology Laboratory; Centre for Biological and Health Sciences; West Zone State University Centre; Rio de Janeiro Brazil
| | - FS Fortes
- Graduate Program in Physiological Sciences; Department of Physiological Sciences; Institute of Biological and Health Sciences; Federal Rural University of Rio de Janeiro; Seropédica Brazil
- Therapy and Cellular and Molecular Physiology Laboratory; Centre for Biological and Health Sciences; West Zone State University Centre; Rio de Janeiro Brazil
| | - Emerson Lopes Olivares
- Multicentre Graduate Program in Physiological Sciences; Department of Physiological Sciences; Institute of Biological and Health Sciences; Federal Rural University of Rio de Janeiro; Seropédica Brazil
- Graduate Program in Physiological Sciences; Department of Physiological Sciences; Institute of Biological and Health Sciences; Federal Rural University of Rio de Janeiro; Seropédica Brazil
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Ghorbani Baravati H, Joukar S, Fathpour H, Kordestani Z. Nandrolone Plus Moderate Exercise Increases the Susceptibility to Lethal Arrhythmias. Res Cardiovasc Med 2015; 4:e26233. [PMID: 26396972 PMCID: PMC4576214 DOI: 10.5812/cardiovascmed.26233v2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 01/14/2015] [Accepted: 01/26/2015] [Indexed: 11/30/2022] Open
Abstract
Background: Until now, no experimental study has directly assessed the arrhythmogenesis of chronic consumption of anabolic androgenic steroids along with moderate-intensity endurance exercise. Objectives: We evaluated the influence of integration of anabolic androgenic steroids along with moderate-intensity endurance exercise on susceptibility to lethal ventricular arrhythmias in rat. Materials and Methods: The animal groups were as follows: control group (CTL); exercise group (EX) which were under 6 weeks of treadmill exercise; nandrolone group (Nan) which received 5 mg/kg of nandrolone decanoate twice a week; vehicle group (Arach) which received Arachis oil (solvent of nandrolone); trained vehicle group (Arach + Ex); and trained nandrolone group (Nan + Ex). One day after ending of the intervention period, arrhythmia was inducted by intravenous infusion of aconitine and ventricular arrhythmias were recorded. Then malondialdehyde (MDA) and glutathione peroxidase (GPX) of heart tissue were measured. Results: Nandrolone, exercise, and their combination were associated with heart hypertrophy. Exercise could prevent the incremental effect of nandrolone on MDA/GPX ratio. Chronic administration of nandrolone with moderate-intensity endurance exercise had no significant effect on blood pressure, heart rate, and basal electrocardiographic parameters. Combination of nandrolone and exercise significantly increased the incidence of ventricular fibrillation (VF) and reduced the VF latency (P < 0.05). Conclusions: The findings suggest that chronic coadministration of nandrolone with moderate-intensity endurance exercise facilitates the VF occurrence in rat. Complementary studies are needed to elucidate the involved mechanisms of this abnormality.
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Affiliation(s)
- Hamideh Ghorbani Baravati
- Deptarment of Biology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, IR Iran
| | - Siyavash Joukar
- Physiology Research Center, Kerman University of Medical Sciences, Kerman, IR Iran
- Department of Physiology and Pharmacology, Kerman University of Medical Sciences, Kerman, IR Iran
- Corresponding author: Siyavash Joukar, Department of Physiology and Pharmacology, Kerman University of Medical Sciences, P. O. Box: 76169-14115, Kerman, IR Iran. Tel/Fax: +98-3433220081, E-mail: ,
| | - Hossein Fathpour
- Deptarment of Biology, Faculty of Basic Sciences, Shahrekord Branch, Islamic Azad University, Shahrekord, IR Iran
| | - Zeinab Kordestani
- Neuroscience Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, IR Iran
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Tsai WC, Lee TI, Chen YC, Kao YH, Lu YY, Lin YK, Chen SA, Chen YJ. Testosterone replacement increases aged pulmonary vein and left atrium arrhythmogenesis with enhanced adrenergic activity. Int J Cardiol 2014; 176:110-8. [PMID: 25037694 DOI: 10.1016/j.ijcard.2014.06.054] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 06/25/2014] [Accepted: 06/28/2014] [Indexed: 11/28/2022]
Abstract
BACKGROUND Aging and testosterone deficiency contribute to the pathogenesis of atrial fibrillation (AF). We determine the effects of testosterone replacement on the electrophysiology and arrhythmogenesis of pulmonary vein (PV) and left atrium (LA) in aged rabbits. METHODS Electrocardiography, heart rate variability, echocardiography, Western blot and conventional microelectrodes were used in aged rabbits (age, >2 years) with and without (control) testosterone treatment (10mg/kg, 12 weeks). RESULTS Testosterone-treated aged rabbits had longer corrected QT interval, higher low frequency/high frequency, greater left ventricle (LV) mass but lower LA total emptying fraction and LV ejection fraction than control rabbits. In tissue preparations, the spontaneous rate was faster for testosterone-treated PVs than for control PVs. Angiotensin II concentration-dependently increased the amplitude of delayed afterdepolarizations (DADs) in testosterone-treated PVs but only did so at the highest angiotensin II concentration (100 nM) in control PVs. Isoproterenol increased the incidence of early afterdepolarizations (EADs) and DADs in testosterone-treated PVs but not in control PVs. Testosterone-treated PVs had more H2O2-induced burst firing and EADs than control PVs. Testosterone-treated LAs had more isoproterenol-induced DADs and spontaneous activity than did control LAs. However, acetylcholine infusion and rapid atrial pacing (10-20 Hz) induced AF in control LAs but not in testosterone-treated LAs. In addition, as compared with control LAs, testosterone-treated LAs expressed more androgen receptor, β1-adrenergic receptor, and Cav 1.2 and less G protein-coupled receptor kinase-2 and Kv 4.2. CONCLUSIONS Testosterone replacement increased arrhythmogenesis in PV and LA by enhancing adrenergic activity in aged rabbits.
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Affiliation(s)
- Wen-Chin Tsai
- Division of Cardiology, Tzu-Chi General Hospital, Hualien, Taiwan
| | - Ting-I Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Department of General Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yao-Chang Chen
- Department of Biomedical Engineering, National Defense Medical Center, Taipei, Taiwan
| | - Yu-Hsun Kao
- Department of Medical Education and Research, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yen-Yu Lu
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Cardiology, Sijhih Cathay General Hospital, New Taipei City, Taiwan
| | - Yung-Kuo Lin
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Shih-Ann Chen
- School of medicine, National Yang-Ming University, Taipei, Taiwan; Division of Cardiology, Veterans General Hospital, Taipei, Taiwan
| | - Yi-Jen Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan; Division of Cardiovascular Medicine, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
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Long-term anabolic androgenic steroid use is associated with increased atrial electromechanical delay in male bodybuilders. BIOMED RESEARCH INTERNATIONAL 2014; 2014:451520. [PMID: 24883314 PMCID: PMC4026920 DOI: 10.1155/2014/451520] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 04/14/2014] [Indexed: 12/21/2022]
Abstract
We investigated the effect of long-term supraphysiologic doses of anabolic androgenic steroids (AAS) on atrial electromechanical delay (AEMD) in male bodybuilders. We clearly demonstrated that long-term consumption of supraphysiologic doses of AAS is associated with higher values of inter- and intra-AEMD in healthy young bodybuilders.
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Silveira ALBD, de Souza Miranda MF, Mecawi AS, Melo RL, Marassi MP, Matos da Silva AC, Antunes-Rodrigues J, Olivares EL. Sexual dimorphism in autonomic changes and in the renin-angiotensin system in the hearts of mice subjected to thyroid hormone-induced cardiac hypertrophy. Exp Physiol 2014; 99:868-80. [PMID: 24659612 DOI: 10.1113/expphysiol.2013.076976] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Based on the relevance of the renin-angiotensin system and the ongoing controversy regarding the role of the sympathetic nervous system in thyroid hormone-induced cardiac hypertrophy, the aim of the present study was to establish whether the putative difference in the degree of cardiac hypertrophy exhibited by males and females might be related to differences in the sympathetic-vagal balance and/or in the cardiac renin-angiotensin system in mice of different genders. Male and female mice (n = 117) were given 0.1 mg kg(-1) of triiodothyronine or normal saline each day for 10 days consecutively. At the end of that period, study of the heart rate variability, spectral analysis and histopathological examination were performed to assess the sympathetic-vagal balance and the diameter of cardiomyocytes. The cardiac levels of angiotensin I and II were also measured. Treatment with triiodothyronine induced a greater degree of cardiac hypertrophy in male (~73%) than in female mice (~42%). This difference was attributed to greater modulation of the sympathetic nervous system and higher levels of angiotensin I and II in male than in female mice. Our data indicate that thyroid hormone-induced cardiac hypertrophy was more intense in male mice due to the synergic effect of the sympathetic nervous system and the cardiac renin-angiotensin system.
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Affiliation(s)
- Anderson Luiz Bezerra da Silveira
- Multicenter Graduate Program in Physiological Sciences, Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Seropedica, Brazil
| | - Manuela França de Souza Miranda
- Graduate Program in Veterinary Medicine, Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Seropedica, Brazil
| | - André Souza Mecawi
- Department of Physiology, School of Medicine, Ribeirao Preto USP - São Paulo, Brazil
| | - Roberto Laureano Melo
- Multicenter Graduate Program in Physiological Sciences, Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Seropedica, Brazil
| | - Michelle Porto Marassi
- Multicenter Graduate Program in Physiological Sciences, Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Seropedica, Brazil
| | - Alba Cenélia Matos da Silva
- Multicenter Graduate Program in Physiological Sciences, Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Seropedica, Brazil
| | | | - Emerson Lopes Olivares
- Multicenter Graduate Program in Physiological Sciences, Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Seropedica, Brazil Graduate Program in Veterinary Medicine, Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Seropedica, Brazil
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Olivares EL, Silveira ALB, Fonseca FV, Silva-Almeida C, Côrtes RS, Pereira-Junior PP, Nascimento JHM, Reis LC. Administration of an anabolic steroid during the adolescent phase changes the behavior, cardiac autonomic balance and fluid intake in male adult rats. Physiol Behav 2013; 126:15-24. [PMID: 24382485 DOI: 10.1016/j.physbeh.2013.12.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2013] [Revised: 11/25/2013] [Accepted: 12/17/2013] [Indexed: 10/25/2022]
Abstract
Few data are available on adolescent users because most behavioral studies on anabolic-androgenic steroids (AAS) abuse have been performed in adults. Studies evaluating the impact of long-term effects of AAS abuse on the prepubertal phase are even more uncommon. Accordingly, this study was developed to test the hypothesis that changes induced by the use of AAS during the adolescent phase may be noted in the adult phase even when the AAS treatment cycle is discontinued. Therefore, not only behavioral changes but also possible autonomic and electrolyte disorders were evaluated. For this purpose, we used male prepubertal, 26-day-old (P26) Wistar rats that were treated with vehicle (control, n=10) or testosterone propionate (TP; 5 mg/kg intramuscular (IM) injection, AAS, n=10) five times per week for 5 weeks, totaling 25 applications during the treatment. Aggression tests were performed at the end of the cycle (P54-56), whereas open-field tests (OFTs), elevated plus maze (EPM) behavioral tests and measurements of heart rate variability (HRV), fluid intake and pathology were conducted in the adult phase (P87-92). The AAS group showed greater aggressiveness in the pubertal phase and higher levels of horizontal and vertical exploration and anxiety-related behavior in the adult phase than the control group (P<0.05). HRV tests showed an increase in sympathetic autonomic modulation, and hydroelectrolytic assessment showed lower basal intake levels of hypertonic saline than the control group (P<0.05), without statistically significant changes in the basal intake of water. These data together suggest that the use of AAS during the prepubertal phase induces behavioral, autonomic and hydroelectrolytic changes that manifest in the adult phase even when treatment is discontinued in late adolescence in rats.
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Affiliation(s)
- Emerson L Olivares
- Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Brazil.
| | - Anderson L B Silveira
- Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Brazil
| | - Fabricia V Fonseca
- Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Brazil
| | - Claudio Silva-Almeida
- Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Brazil
| | - Rafael S Côrtes
- Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Brazil
| | - Pedro P Pereira-Junior
- Cardiac Electrophysiology Laboratory Carlos Chagas Filho, Biophysics Institute, Federal University of Rio de Janeiro, Brazil
| | - Jose H M Nascimento
- Cardiac Electrophysiology Laboratory Carlos Chagas Filho, Biophysics Institute, Federal University of Rio de Janeiro, Brazil
| | - Luis C Reis
- Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Brazil
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Vargas RA, Oliveira LP, Frankenfeld S, Souza DBD, Costa WS, Favorito LA, Sampaio FJB. The prostate after administration of anabolic androgenic steroids: a morphometrical study in rats. Int Braz J Urol 2013; 39:675-82. [DOI: 10.1590/s1677-5538.ibju.2013.05.10] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2013] [Accepted: 07/25/2013] [Indexed: 11/22/2022] Open
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Hassan AF, Kamal MM. Effect of exercise training and anabolic androgenic steroids on hemodynamics, glycogen content, angiogenesis and apoptosis of cardiac muscle in adult male rats. Int J Health Sci (Qassim) 2013; 7:47-60. [PMID: 23559905 DOI: 10.12816/0006020] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVES To investigate the effects of exercise training and anabolic androgenic steroids (AAS) on hemodynamics, glycogen content, angiogenesis, apoptosis and histology of cardiac muscle. METHODS Forty rats were divided into 4 groups; control, steroid, exercise-trained and exercise-trained plus steroid groups. The exercise-trained and trained plus steroid groups, after one week of water adaptation, were exercised by jumping into water for 5 weeks. The steroid and trained plus steroid groups received nandrolone decanoate, for 5 weeks. Systolic blood pressure and heart rate (HR) were monitored weekly. Heart weight/body weight ratio (HW/BW ratio) were determined. Serum testosterone, vascular endothelial growth factor (VEGF), cardiac caspase-3 activity and glycogen content were measured. RESULTS Compared with control, the steroid group had significantly higher blood pressure, HR, sympathetic nerve activity, testosterone level, HW/BW and cardiac caspase-3 activity. Histological examination revealed apoptotic changes and hypertrophy of cardiomyocytes. In exercise-trained group, cardiac glycogen, VEGF and testosterone levels were significantly higher while HR was significantly lower than control. HW/BW was more than control confirmed by hypertrophy of cardiomyocytes with angiogenesis on histological examination. Trained plus steroid group, had no change in HR, with higher blood pressure and HW/BW than control, cardiac glycogen and serum VEGF were higher than control but lower than exercise-trained group. Histological examination showed hypertrophy of cardiomyoctes with mild angiogenesis rather than apoptosis. CONCLUSION When exercise is augmented with AAS, exercise-associated cardiac benefits may not be fully gained with potential cardiac risk from AAS if used alone or combined with exercise.
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Affiliation(s)
- Asmaa F Hassan
- Department of Medical Physiology, Faculty of Medicine, Assiut University, Assiut, Egypt
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Marques Neto SR, Silva ADH, Santos MCPD, Ferraz EF, Nascimento JHM. The blockade of angiotensin AT1 and aldosterone receptors protects rats from synthetic androgen-induced cardiac autonomic dysfunction. Acta Physiol (Oxf) 2013; 208:166-71. [PMID: 23279762 DOI: 10.1111/apha.12056] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 10/15/2012] [Accepted: 12/15/2012] [Indexed: 11/29/2022]
Abstract
AIM This study aimed to evaluate the combined effects of exercise and antagonists of the angiotensin II and aldosterone receptors on cardiac autonomic regulation and ventricular repolarization in rats chronically treated with nandrolone decanoate (ND), a synthetic androgen. METHODS Thirty male Wistar rats were divided into six groups: sedentary, trained, ND-treated, trained and ND-treated, trained and treated with both ND and spironolactone, and trained and treated with both ND and losartan. ND (10 mg kg(-1) weekly) and the antagonists (20 mg kg(-1) daily) of the angiotensin II AT1 (losartan) and aldosterone (spironolactone) receptors were administered for 8 weeks. Exercise training was performed using a treadmill five times each week for 8 weeks. Following this 8-week training and treatment period, electrocardiogram recordings were obtained to determine the time and frequency domains of heart rate variability (HRV) and corrected QT interval (QTc). RESULTS Nandrolone decanoate treatment increased the QTc interval and reduced the parasympathetic indexes of HRV (RMSSD, pNN5 and high-frequency power) in sedentary and trained rats. The ratio between low- and high-frequency power (LF/HF) was higher in ND-treated groups. Both losartan and spironolactone treatments prevented the effects of ND on the QTc interval and the HRV parameters (RMSSD, pNN5, high-frequency power, and the LF/HF ratio). CONCLUSION Our results show that chronic treatment with a high dose of ND induces cardiac parasympathetic dysfunction and disturbances in ventricular repolarization in both sedentary and exercised rats. Furthermore, inhibiting the renin-angiotensin-aldosterone system using losartan, or spironolactone, prevented these deleterious effects.
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Affiliation(s)
| | - A. da H. Silva
- Instituto de Biofisica Carlos Chagas Filho; Universidade Federal do Rio de Janeiro; Rio de Janeiro; Brazil
| | - M. C. P. dos Santos
- Instituto de Biofisica Carlos Chagas Filho; Universidade Federal do Rio de Janeiro; Rio de Janeiro; Brazil
| | - E. F. Ferraz
- Instituto de Biofisica Carlos Chagas Filho; Universidade Federal do Rio de Janeiro; Rio de Janeiro; Brazil
| | - J. H. M. Nascimento
- Instituto de Biofisica Carlos Chagas Filho; Universidade Federal do Rio de Janeiro; Rio de Janeiro; Brazil
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das Neves VJ, Tanno AP, Cunha TS, Fernandes T, Guzzoni V, da Silva CA, de Oliveira EM, Moura MJCS, Marcondes FK. Effects of nandrolone and resistance training on the blood pressure, cardiac electrophysiology, and expression of atrial β-adrenergic receptors. Life Sci 2013; 92:1029-35. [PMID: 23603140 DOI: 10.1016/j.lfs.2013.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2012] [Revised: 03/01/2013] [Accepted: 04/02/2013] [Indexed: 12/19/2022]
Abstract
AIMS This study was performed to assess isolated and combined effects of nandrolone and resistance training on the blood pressure, cardiac electrophysiology, and expression of the β1- and β2-adrenergic receptors in the heart of rats. MAIN METHODS Wistar rats were randomly divided into four groups and submitted to a 6-week treatment with nandrolone and/or resistance training. Cardiac hypertrophy was accessed by the ratio of heart weight to the final body weight. Blood pressure was determined by a computerized tail-cuff system. Electrocardiography analyses were performed. Western blotting was used to access the protein levels of the β1- and β2-adrenergic receptors in the right atrium and left ventricle. KEY FINDINGS Both resistance training and nandrolone induced cardiac hypertrophy. Nandrolone increased systolic blood pressure depending on the treatment time. Resistance training decreased systolic, diastolic and mean arterial blood pressure, as well as induced resting bradycardia. Nandrolone prolonged the QTc interval for both trained and non-trained groups when they were compared to their respective vehicle-treated one. Nandrolone increased the expression of β1- and β2-adrenergic receptors in the right atrium for both trained and non-trained groups when they were compared to their respective vehicle-treated one. SIGNIFICANCE This study indicated that nandrolone, associated or not with resistance training increases blood pressure depending on the treatment time, induces prolongation of the QTc interval, and increases the expression of β1- and β2-adrenergic receptors in the cardiac right atrium, but not in the left ventricle.
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Affiliation(s)
- Vander José das Neves
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, SP, Brazil
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Ozdemir O, Bozkurt I, Ozdemir M, Yavuz O. Side effect of metenolone enanthate on rats heart in puberty: morphometrical study. ACTA ACUST UNITED AC 2012; 65:745-50. [PMID: 23280519 DOI: 10.1016/j.etp.2012.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2012] [Revised: 07/25/2012] [Accepted: 09/19/2012] [Indexed: 11/30/2022]
Abstract
The aim of this study was the investigation of effects of the metenolone enanthate (ME) that is used among athletes as doping and muscle amplifier, on hearts of male and female rats that are in puberty using morphometrical methods. A total of 36 rats which were divided into three separate groups (Experiment, ME; vehicle, PO; control, C) each consisting of 6 male and 6 female rats were used. 0.5 mg/kg metenolone enanthate was applied intraperitoneally into experiment subjects 5 times a week over a period of 4 weeks. At the end of experiment, rats were euthanized and their hearts were cut at the level of musculus papillaris after the fixation in formalin. Hearts were taken out and embedded in paraffin wax. Photos were taken at cut surfaces, and thickness, diameters and surface area levels were measured. Left ventriculus mass (LVM) and left ventriculus mass index (LVMI) were calculated. In the study LVM (p<0.005) and LVMI (p<0.05) were found to be significantly higher in the ME group in females whereas left ventricular lumen diameter (LVLD) were found to be significantly lower (p<0.05). Thus left ventricular hypertrophy development was observed. LVM and LVMI were found to be similar in ME and C groups among male rats and the highest level of these data were found in the group. LVM and LVMI were higher among females (p<0.006). In conclusion, it has been shown that the adverse effects of ME on heart were developing starting from puberty and resulting with the enlargement of the heart and left ventricular hypertrophy and especially among females this condition was more evident. It has also been discussed that the continuous use of drugs may further enhance this condition.
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Affiliation(s)
- Ozgur Ozdemir
- Selcuk University Faculty of Veterinary Medicine, Department of Pathology, 42079, Campus, Konya, Turkey.
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Golestani R, Slart RHJA, Dullaart RPF, Glaudemans AWJM, Zeebregts CJ, Boersma HH, Tio RA, Dierckx RAJO. Adverse cardiovascular effects of anabolic steroids: pathophysiology imaging. Eur J Clin Invest 2012; 42:795-803. [PMID: 22299602 DOI: 10.1111/j.1365-2362.2011.02642.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Anabolic-androgenic steroids (AAS) are widely abused for enhancing muscle mass, strength, growth and improving athletic performance. MATERIALS AND METHODS In recent years, many observational and interventional studies have shown important adverse cardiovascular effects of AAS abuse. CONCLUSIONS This review discusses established and future perspectives of novel molecular imaging techniques that may serve as potential tools for early detection of AAS-associated cardiovascular disorders.
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Affiliation(s)
- Reza Golestani
- Departments of Nuclear Medicine and Molecular Imaging Endocrinology, Division of Vascular Surgery, Department of University Medical Center Groningen, University of Groningen, Hanzeplein 1, Groningen, The Netherlands.
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Anabolic androgenic steroid use is associated with ventricular dysfunction on cardiac MRI in strength trained athletes. Int J Cardiol 2012; 167:664-8. [PMID: 22459398 DOI: 10.1016/j.ijcard.2012.03.072] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 10/05/2011] [Accepted: 03/03/2012] [Indexed: 11/22/2022]
Abstract
BACKGROUND Uncertainty remains about possible cardiac adaptation to resistance training. Androgenic anabolic steroids (AAS) use plays a potential role and may have adverse cardiovascular effects. OBJECTIVE To elucidate the effect of resistance training and of AAS-use on cardiac dimensions and function. PARTICIPANTS Cardiac magnetic resonance (CMR) were performed in 156 male subjects aged 18-40 years: 52 non-athletes (maximum of 3 exercise hours/week), 52 strength-endurance (high dynamic-high static, HD-HS) athletes and 52 strength (low dynamic-high static, LD-HS) trained athletes (athletes ≥ 6 exercise hours/week). 28 LD-HS athletes denied and 24 admitted to AAS use for an average duration of 5 years (range 3 months-20 years). RESULTS No significant differences were found between non-athletes and non-AAS-using LD-HS athletes. AAS-using LD-HS athletes had significantly larger LV and RV volumes and LV wall mass than non-AAS-using LD-HS athletes, but lower than HD-HS athletes. In comparison to all other groups AAS-using LD-HS athletes showed lower ejection fractions of both ventricles (LV/RV EF 51/48% versus 55-57/51-52%) and lower E/A ratios (LV/RV 1.5/1.2 versus 1.9-2.0/1.4-1.5) as an indirect measure of diastolic function. Linear regression models demonstrated a significant effect of AAS-use on LV EDV, LV EDM, systolic function and mitral valve E/A ratio (all ANOVA-tests p<0.05). CONCLUSIONS Strength athletes who use AAS show significantly different cardiac dimensions and biventricular systolic dysfunction and impaired ventricular inflow as compared to non-athletes and non-AAS-using strength athletes. Increased ventricular volume and mass did not exceed that of strength-endurance athletes. These findings may help raise awareness of the consequences of AAS use.
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Maior AS, Carvalho AR, Marques-Neto SR, Menezes P, Soares PP, Nascimento JHM. Cardiac autonomic dysfunction in anabolic steroid users. Scand J Med Sci Sports 2012; 23:548-55. [PMID: 22257181 DOI: 10.1111/j.1600-0838.2011.01436.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2011] [Indexed: 01/21/2023]
Abstract
This study aimed to evaluate if androgenic-anabolic steroids (AAS) abuse may induce cardiac autonomic dysfunction in recreational trained subjects. Twenty-two men were volunteered for the study. The AAS group (n = 11) utilized AAS at mean dosage of 410 ± 78.6 mg/week. All of them were submitted to submaximal exercise testing using an Astrand-Rhyming protocol. Electrocardiogram (ECG) and respired gas analysis were monitored at rest, during, and post-effort. Mean values of VO2 , VCO2 , and VE were higher in AAS group only at rest. The heart rate variability variables were calculated from ECG using MATLAB-based algorithms. At rest, AAS group showed lower values of the standard deviation of R-R intervals, the proportion of adjacent R-R intervals differing by more than 50 ms (pNN50), the root mean square of successive differences (RMSSD), and the total, the low-frequency (LF) and the high-frequency (HF) spectral power, as compared to Control group. After submaximal exercise testing, pNN50, RMSSD, and HF were lower, and the LF/HF ratio was higher in AAS group when compared to control group. Thus, the use of supraphysiological doses of AAS seems to induce dysfunction in tonic cardiac autonomic regulation in recreational trained subjects.
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Affiliation(s)
- A S Maior
- School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Oberlander JG, Penatti CAA, Porter DM, Henderson LP. The Buzz about anabolic androgenic steroids: electrophysiological effects in excitable tissues. Neuroendocrinology 2012; 96:141-51. [PMID: 22576754 PMCID: PMC3488447 DOI: 10.1159/000339123] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Accepted: 04/23/2012] [Indexed: 01/04/2023]
Abstract
Anabolic androgenic steroids (AAS) comprise a large and growing class of synthetic androgens used clinically to promote tissue-building in individuals suffering from genetic disorders, injuries, and diseases. Despite these beneficial therapeutic applications, the predominant use of AAS is illicit: these steroids are self-administered to promote athletic performance and body image. Hand in hand with the desired anabolic actions of the AAS are untoward effects on the brain and behavior. While the signaling routes by which the AAS impose both beneficial and harmful actions may be quite diverse, key endpoints are likely to include ligand-gated and voltage-dependent ion channels that govern the activity of electrically excitable tissues. Here, we review the known effects of AAS on molecular targets that play critical roles in controlling electrical activity, with a specific focus on the effects of AAS on neurotransmission mediated by GABA(A) receptors in the central nervous system.
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Affiliation(s)
- Joseph G. Oberlander
- Department of Physiology and Neurobiology, Dartmouth Medical School, Hanover, NH 03755 USA
| | - Carlos A. A. Penatti
- Departamento de Ciências Médicas, Universidade Nove de Julho - UNINOVE, São Paulo, SP 01504-000 Brasil
| | - Donna M. Porter
- Department of Physiology and Neurobiology, Dartmouth Medical School, Hanover, NH 03755 USA
| | - Leslie P. Henderson
- Department of Physiology and Neurobiology, Dartmouth Medical School, Hanover, NH 03755 USA
- To Whom Correspondence Should be Addressed:
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Soares MCR, Abreu ICD, Assenço F, Borges MODR. Decanoato de nandrolona aumenta a parede ventricular esquerda, mas atenua o aumento da cavidade provocado pelo treinamento de natação em ratos. REV BRAS MED ESPORTE 2011. [DOI: 10.1590/s1517-86922011000600011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Os esteroides anabólicos androgênicos (EAAs) são drogas sintetizadas a partir da testosterona. Sua ação anabólica deve-se principalmente ao aumento da síntese e redução na degradação das proteínas musculares. Este trabalho investiga os efeitos do treinamento de natação associado ao tratamento com decanoato de nandrolona sobre a pressão arterial, as dimensões cardíacas e reatividade vascular. Quarenta ratos Wistar machos, com idade de 60 dias, foram divididos em quatro grupos (n = 10): sedentário (SN), sedentário tratado (ST), treinados (TN) e treinados tratados (TT). Animais TN e TT realizaram um treinamento de natação durante 12 semanas, enquanto os animais ST e TT receberam decanoato de nandrolona semanalmente (15mg/kg). O coração e os testículos foram removidos e pesados. O diâmetro da cavidade do ventrículo esquerdo (DcVE) e a espessura da parede ventricular (EspVE) foram medidos com um paquímetro eletrônico. A pressão arterial sistólica (PAS) e a pressão arterial diastólica (PAD) foram medidas semanalmente; ainda, foi estudada a reatividade vascular das artérias mesentéricas em resposta à noradrenalina. Em nosso trabalho não houve alterações no peso do coração; no entanto, verificamos aumento no DcVE (p < 0,05) em ratos TN, enquanto a EspVE aumentou (p < 0,05) nos ratos ST e TT, ambos em relação ao SN. O peso do testículo diminuiu (p < 0,05) em ST e TT em relação a SN. Tanto a pressão arterial quanto a reatividade vascular não foram alteradas. Concluímos que o treinamento de natação aumentou o diâmetro da cavidade ventricular esquerda, enquanto o tratamento com decanoato de nandrolona aumentou a espessura da parede ventricular esquerda, sugerindo uma hipertrofia concêntrica
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Carmo ECD, Rosa KT, Koike DC, Fernandes T, Silva Junior NDD, Mattos KC, Wichi RB, Irigoyen MCC, Oliveira EMD. A associação de esteroide anabolizante ao treinamento físico aeróbio leva a alterações morfológicas cardíacas e perda de função ventricular em ratos. REV BRAS MED ESPORTE 2011. [DOI: 10.1590/s1517-86922011000200014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
INTRODUÇÃO: O esteroide anabolizante (EA) associado ao treinamento físico induz mudança da hipertrofia cardíaca (HC) fisiológica para patológica. Entretanto, esses trabalhos foram realizados com atletas de força, sendo os efeitos do EA associados ao treinamento aeróbio poucos conhecidos. Com isso, o objetivo do estudo foi avaliar os efeitos do treinamento aeróbio e dos EA sobre a estrutura e função cardíaca. MÉTODOS: Foram utilizados 28 ratos Wistar divididos em quatro grupos: sedentários controle (SC), sedentários anabolizante (SA), treinados controle (TC) e treinado anabolizante (TA). O EA foi administrado duas vezes por semana (10mg/kg/ semana). O treinamento físico de natação foi realizado durante 10 semanas, cinco sessões semanais. Foram avaliadas a pressão arterial e frequência cardíaca por pletismografia de cauda, função ventricular por ecocardiografia, diâmetro dos cardiomiócitos e fração volume de colágeno por métodos histológicos. RESULTADOS: Não foram observadas diferenças na PA. O grupo TC apresentou redução da frequência cardíaca de repouso após o período experimental, o que não ocorreu no grupo TA. Foram observadas HC de 38% no grupo SA, 52% no grupo TC e de 64% no grupo TA em relação ao grupo SC. O grupo TA apresentou diminuição da função diastólica em relação aos outros grupos. Os grupos treinados apresentaram aumentos significantes no diâmetro dos cardiomiócitos. Os grupos SA e TA apresentaram aumento na fração volume de colágeno em relação aos grupos SC e TC. CONCLUSÃO: Os resultados apresentados mostram que o treinamento físico de natação induz a HC, principalmente pelo aumento do colágeno intersticial, o que pode levar a prejuízos da função diastólica.
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Maior AS, Menezes P, Pedrosa RC, Carvalho DP, Soares PP, Nascimento JHM. Abnormal cardiac repolarization in anabolic androgenic steroid users carrying out submaximal exercise testing. Clin Exp Pharmacol Physiol 2011; 37:1129-33. [PMID: 20880189 DOI: 10.1111/j.1440-1681.2010.05452.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
1. The aim of the present study was to investigate the cardiovascular effects of anabolic androgenic steroid (AAS) abuse by comparing the electrocardiographic parameters before and after submaximal exercise between AAS users and non-AAS users. 2. A total of 22 men who regularly engaged in both resistance and aerobic exercise at fitness academies volunteered for the study (control group: n = 11, age 25 ± 4 years; AAS group: n = 11, age 27 ± 5 years). All subjects were submitted to submaximal exercise testing using an Astrand-Rhyming protocol. Heart rate and electrocardiography parameters were measured at rest and at the third minute of the post-exercise recovery time. 3. AAS users presented higher QTc and QTd at rest (10% and 55%, respectively) and at the post-exercise period (17% and 43%, respectively), compared with control subjects. The maximal and minimum QTc interval of the AAS group was significantly prolonged at the post-exercise period (12% and 15%, respectively). The haemodynamic parameters were similar in both groups (P > 0.05). The AAS group showed a lower heart rate recovery at the first minute after the test (P = 0.0001), and a higher exertion score (P < 0.0001) at a lower workload, compared with the control group. 4. Our results show that the QTc interval and dispersion are increased in individuals who abuse AAS, suggesting the presence of ventricular repolarization abnormalities that could potentially increase the risk of cardiac arrhythmias and sudden cardiac death.
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Affiliation(s)
- Alex S Maior
- Cardiac Electrophysiology Laboratory, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Alves MJNN, Dos Santos MR, Dias RG, Akiho CA, Laterza MC, Rondon MUPB, Moreau RLDM, Negrāo CE. Abnormal neurovascular control in anabolic androgenic steroids users. Med Sci Sports Exerc 2010; 42:865-71. [PMID: 19997008 DOI: 10.1249/mss.0b013e3181c07b74] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE Previous studies showed that anabolic androgenic steroids (AAS) increase vascular resistance and blood pressure (BP) in humans. In this study, we tested the hypotheses 1) that AAS users would have increased muscle sympathetic nerve activity (MSNA) and reduced forearm blood flow (FBF) compared with AAS nonusers and 2) that there would be an association between MSNA and 24-h BP. METHODS Twelve AAS users aged 31 +/- 2 yr (means +/- SE) and nine age-matched AAS nonusers aged 29 +/- 2 yr participated in the study. All individuals were involved in strength training for at least 2 yr. AAS was determined by urine test (chromatography-mass spectrometry). MSNA was directly measured by microneurography technique. FBF was measured by venous occlusion plethysmography. BP monitoring consisted of measures of BP for 24 h. RESULTS MSNA was significantly higher in AAS users than that in AAS nonusers (29 +/- 3 vs 20 +/- 1 bursts per minute, P = 0.01). FBF (1.92 +/- 0.17 vs 2.77 +/- 0.24 mL x min(-1) x 100 mL(-1), P = 0.01) and forearm vascular conductance (2.01 +/- 0.17 vs 2.86 +/- 0.31 U, P = 0.02) were significantly lower in AAS users than that in AAS nonusers. Systolic (131 +/- 4 vs 120 +/- 3 mm Hg, P = 0.001), diastolic (74 +/- 4 vs 68 +/- 3 mm Hg, P = 0.02), and mean BP (93 +/- 4 vs 86 +/- 3 mm Hg, P = 0.005) and heart rate (74 +/- 3 vs 68 +/- 3 bpm, P = 0.02) were significantly higher in AAS users when compared with AAS nonusers. Further analysis showed that there was a significant correlation between MSNA and 24-h mean BP (r = 0.75, P = 0.002). CONCLUSIONS AAS increases MSNA and reduces muscle blood flow in young individuals. In addition, the increase in BP levels in AAS users is associated with augmented sympathetic outflow. These findings suggest that AAS increases the susceptibility for cardiovascular disease in humans.
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Medei E, Marocolo M, Rodrigues DDC, Arantes PC, Takiya CM, Silva J, Rondinelli E, Goldenberg RCDS, de Carvalho ACC, Nascimento JHM. Chronic treatment with anabolic steroids induces ventricular repolarization disturbances: cellular, ionic and molecular mechanism. J Mol Cell Cardiol 2010; 49:165-75. [PMID: 20462507 DOI: 10.1016/j.yjmcc.2010.04.014] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2009] [Revised: 04/21/2010] [Accepted: 04/22/2010] [Indexed: 02/08/2023]
Abstract
The illicit use of supraphysiological doses of androgenic steroids (AAS) has been suggested as a cause of arrhythmia in athletes. The objectives of the present study were to investigate the time-course and the cellular, ionic and molecular processes underlying ventricular repolarization in rats chronically treated with AAS. Male Wistar rats were treated weekly for 8 weeks with 10mg/kg of nandrolone decanoate (DECA n=21) or vehicle (control n=20). ECG was recorded weekly. Action potential (AP) and transient outward potassium current (I(to)) were recorded in rat hearts. Expression of KChIP2, Kv1.4, Kv4.2, and Kv4.3 was assessed by real-time PCR. Hematoxylin/eosin and Picrosirius red staining were used for histological analysis. QTc was greater in the DECA group. After DECA treatment the left, but not right, ventricle showed a longer AP duration than did the control. I(to) current densities were 47.5% lower in the left but not in the right ventricle after DECA. In the right ventricle the I(to) inactivation time-course was slower than in the control group. After DECA the left ventricle showed lower KChIP2 ( approximately 26%), Kv1.4 ( approximately 23%) and 4.3 ( approximately 70%) expression while the Kv 4.2 increased in 4 ( approximately 250%) and diminished in 3 ( approximately 30%) animals of this group. In the right ventricle the expression of I(to) subunits was similar between the treatment and control groups. DECA-treated hearts had 25% fewer nuclei and greater nuclei diameters in both ventricles. Our results strongly suggest that supraphysiological doses of AAS induce morphological remodeling in both ventricles. However, the electrical remodeling was mainly observed in the left ventricle.
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Maior AS, Simão R, de Salles BF, Alexander JL, Rhea M, Nascimento JHM. Acute cardiovascular response in anabolic androgenic steroid users performing maximal treadmill exercise testing. J Strength Cond Res 2010; 24:1688-95. [DOI: 10.1519/jsc.0b013e3181dc46c9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Pereira-Junior PP, Marocolo M, Rodrigues FP, Medei E, Nascimento JH. Noninvasive method for electrocardiogram recording in conscious rats: feasibility for heart rate variability analysis. AN ACAD BRAS CIENC 2010; 82:431-7. [DOI: 10.1590/s0001-37652010000200019] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Accepted: 08/31/2009] [Indexed: 11/22/2022] Open
Abstract
Heart rate variability (HRV) analysis consists in a well-established tool for the assessment of cardiac autonomic control, both in humans and in animal models. Conventional methods for HRV analysis in rats rely on conscious state electrocardiogram (ECG) recording based on prior invasive surgical procedures for electrodes/transmitters implants. The aim of the present study was to test a noninvasive and inexpensive method for ECG recording in conscious rats, assessing its feasibility for HRV analysis. A custom-made elastic cotton jacket was developed to fit the rat's mean thoracic circumference, with two pieces of platinum electrodes attached on its inner surface, allowing ECG to be recorded noninvasively in conscious, restrained rats (n=6). Time- and frequency-domain HRV analyses were conducted, under basal and autonomic blockade conditions. High-quality ECG signals were obtained, being feasible for HRV analysis. As expected, mean RR interval was significantly decreased in the presence of atropine (p <0.05) and increased in the presence of propranolol (p<0.001). Also, reinforcing the reliability of the method, low- and high-frequency HRV spectral powers were significantly decreased in the presence of propranolol (p <0.05) and atropine (p< 0.001), respectively. In summary, the present work describes a novel, inexpensive and noninvasive method for surface ECG recording in conscious rats.
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