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Pimenta GF, Awata WMC, Orlandin GG, Silva-Neto JA, Assis VO, da Costa RM, Bruder-Nascimento T, Tostes RC, Tirapelli CR. Melatonin prevents overproduction of reactive oxygen species and vascular dysfunction induced by cyclophosphamide. Life Sci 2024; 338:122361. [PMID: 38158040 DOI: 10.1016/j.lfs.2023.122361] [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: 10/30/2023] [Revised: 12/06/2023] [Accepted: 12/16/2023] [Indexed: 01/03/2024]
Abstract
AIMS Overproduction of reactive oxygen species (ROS) is a pathologic hallmark of cyclophosphamide toxicity. For this reason, antioxidant compounds emerge as promising tools for preventing tissue damage induced by cyclophosphamide. We hypothesized that melatonin would display cytoprotective action in the vasculature by preventing cyclophosphamide-induced oxidative stress. MATERIALS AND METHODS Male C57BL/6 mice (22-25 g) were injected with a single dose of cyclophosphamide (300 mg/kg; i.p.). Mice were pretreated or not with melatonin (10 mg/kg/day, i.p.), given during 4 days before cyclophosphamide injection. Functional (vascular reactivity) and oxidative/inflammatory patterns were evaluated at 24 h in resistance arteries. The antioxidant action of melatonin was assessed in vitro in cultured vascular smooth muscle cells (VSMCs) of mesenteric arteries. KEY FINDINGS Cyclophosphamide induced ROS generation in both mesenteric arterial bed (MAB) and cultured VSMCs, and this was normalized by melatonin. Cyclophosphamide-induced ROS generation and lipoperoxidation in the bladder and kidney was also prevented by melatonin. Increased levels of tumor necrosis factor (TNF)-α and interleukin (IL)-6 were detected in the MAB of cyclophosphamide-treated mice, all of which were prevented by melatonin. Functional assays using second-order mesenteric arteries of cyclophosphamide-treated mice revealed a decrease in vascular contractility. Melatonin prevented vascular hypocontractility in the cyclophosphamide group. Melatonin partially prevented the decrease in myeloperoxidase (MPO) and N-acetyl-beta-D-glucosaminidase (NAG) activities in the MAB of the cyclophosphamide group. SIGNIFICANCE Melatonin may constitute a novel and promising therapeutic approach for management of the toxic effects induced by cyclophosphamide in the vasculature.
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Affiliation(s)
- Gustavo F Pimenta
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil; Laboratório de Farmacologia Cardiovascular, DEPCH, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Wanessa M C Awata
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil; Laboratório de Farmacologia Cardiovascular, DEPCH, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil; Vascular Medicine Institute (VMI), University of Pittsburgh, Pittsburgh, PA, USA
| | - Gabrielly G Orlandin
- Laboratório de Farmacologia Cardiovascular, DEPCH, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Julio A Silva-Neto
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Victor O Assis
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil; Laboratório de Farmacologia Cardiovascular, DEPCH, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Rafael M da Costa
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | | | - Rita C Tostes
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
| | - Carlos R Tirapelli
- Laboratório de Farmacologia Cardiovascular, DEPCH, Escola de Enfermagem de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil.
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Awata WMC, Alves JV, Costa RM, Bruder-Nascimento A, Singh S, Barbosa GS, Tirapelli CR, Bruder-Nascimento T. Vascular injury associated with ethanol intake is driven by AT1 receptor and mitochondrial dysfunction. Biomed Pharmacother 2023; 169:115845. [PMID: 37951022 DOI: 10.1016/j.biopha.2023.115845] [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: 08/19/2023] [Revised: 10/27/2023] [Accepted: 11/05/2023] [Indexed: 11/13/2023] Open
Abstract
BACKGROUND Renin-angiotensin (Ang II)-aldosterone system (RAAS) is crucial for the cardiovascular risk associated with excessive ethanol consumption. Disturbs in mitochondria have been implicated in multiple cardiovascular diseases. However, if mitochondria dysfunction contributes to ethanol-induced vascular dysfunction is still unknown. We investigated whether ethanol leads to vascular dysfunction via RAAS activation, mitochondria dysfunction, and mitochondrial reactive oxygen species (mtROS). METHODS Male C57/BL6J or mt-keima mice (6-8-weeks old) were treated with ethanol (20% vol./vol.) for 12 weeks with or without Losartan (10 mg/kg/day). RESULTS Ethanol induced aortic hypercontractility in an endothelium-dependent manner. PGC1α (a marker of biogenesis), Mfn2, (an essential protein for mitochondria fusion), as well as Pink-1 and Parkin (markers of mitophagy), were reduced in aortas from ethanol-treated mice. Disturb in mitophagy flux was further confirmed in arteries from mt-keima mice. Additionally, ethanol increased mtROS and reduced SOD2 expression. Strikingly, losartan prevented vascular hypercontractility, mitochondrial dysfunction, mtROS, and restored SOD2 expression. Both MnTMPyP (SOD2 mimetic) and CCCP (a mitochondrial uncoupler) reverted ethanol-induced vascular dysfunction. Moreover, L-NAME (NOS inhibitor) and EUK 134 (superoxide dismutase/catalase mimetic) did not affect vascular response in ethanol group, suggesting that ethanol reduces aortic nitric oxide (NO) and H2O2 bioavailability. These responses were prevented by losartan. CONCLUSION AT1 receptor modulates ethanol-induced vascular hypercontractility by promoting mitochondrial dysfunction, mtROS, and reduction of NO and H2O2 bioavailability. Our findings shed a new light in our understanding of ethanol-induced vascular toxicity and open perspectives of new therapeutic approaches for patients with disorder associated with abusive ethanol drinking.
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Affiliation(s)
- Wanessa M C Awata
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA; Center for Pediatrics Research in Obesity and Metabolism (CPROM), University of Pittsburgh, Pittsburgh, PA, USA; Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Juliano V Alves
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA; Center for Pediatrics Research in Obesity and Metabolism (CPROM), University of Pittsburgh, Pittsburgh, PA, USA; Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Rafael M Costa
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA; Center for Pediatrics Research in Obesity and Metabolism (CPROM), University of Pittsburgh, Pittsburgh, PA, USA; Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Ariane Bruder-Nascimento
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA; Center for Pediatrics Research in Obesity and Metabolism (CPROM), University of Pittsburgh, Pittsburgh, PA, USA
| | - Shubhnita Singh
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA; Center for Pediatrics Research in Obesity and Metabolism (CPROM), University of Pittsburgh, Pittsburgh, PA, USA
| | - Gabriela S Barbosa
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA; Center for Pediatrics Research in Obesity and Metabolism (CPROM), University of Pittsburgh, Pittsburgh, PA, USA; UNIPEX, Medical School, Sao Paulo State University (UNESP), Botucatu, Brazil
| | | | - Thiago Bruder-Nascimento
- Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, USA; Center for Pediatrics Research in Obesity and Metabolism (CPROM), University of Pittsburgh, Pittsburgh, PA, USA; Endocrinology Division at UPMC Children's Hospital of Pittsburgh, University of Pittsburgh, Pittsburgh, PA, USA; Vascular Medicine, Institute (VMI), University of Pittsburgh, Pittsburgh, PA, USA.
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Awata WMC, Sousa AH, de Mello MMB, Dourado TMH, Pinheiro LC, Elias-Oliveira J, Rodrigues VF, Carlos D, Castro MM, Tirapelli CR. AT 1 receptors modulate ethanol-induced loss of anticontractile effect of perivascular adipose tissue. Biochem Pharmacol 2023; 217:115840. [PMID: 37783376 DOI: 10.1016/j.bcp.2023.115840] [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: 08/25/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023]
Abstract
Ethanol consumption activates renin-angiotensin-aldosterone system (RAAS), which plays a major role in the pro-contractile and hypertensive effects linked to ethanol. We hypothesized that ethanol consumption induces loss of the anticontractile effect of perivascular adipose tissue (PVAT)through RAAS-mediated mechanisms. We examined the contribution of angiotensin II type 1 receptors (AT1R) to ethanol-induced PVAT dysfunction. With this purpose, male Wistar Hannover rats were treated with ethanol 20 % (in volume ratio) and/or losartan (antagonist of AT1R; 10 mg/kg/day, gavage) for 9 weeks. Losartan prevented the increase in blood pressure and the loss of the anticontractile effect of PVAT induced by ethanol consumption. PVAT dysfunction occurred after 3 and 9 weeks of treatment with ethanol in an endothelium-dependent manner. Blockade of AT1R prevented ethanol-induced reduction of adiponectin levels in PVAT from ethanol-treated rats. Functional assays revealed that ethanol impaired the anticontractile effect of PVAT-derived angiotensin (1-7) and endothelial nitric oxide (NO). In conclusion, AT1R are implicated in ethanol-induced loss of the anticontractile effect of PVAT. In PVAT, AT1R activation decreases the production of adiponectin, a PVAT-derived factor that promotes vasorelaxation in an endothelium-dependent manner. In the endothelium, AT1R favors the production of superoxide (O2•-) leading to a reduction in NO bioavailability. These responses impair the vasodilator action induced by PVAT-derived angiotensin (1-7), which occurs via Mas receptors located in endothelial cells. Ethanol-induced PVAT dysfunction favors vascular hypercontractility, a response that could contribute to the hypertensive state associated with ethanol consumption.
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Affiliation(s)
- Wanessa M C Awata
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil; Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Arthur H Sousa
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil; Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Marcela M B de Mello
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Thales M H Dourado
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil; Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Lucas C Pinheiro
- Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Jefferson Elias-Oliveira
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Vanessa F Rodrigues
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Daniela Carlos
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Michele M Castro
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Carlos R Tirapelli
- Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil.
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Padovan JC, Dourado TMH, Pimenta GF, Bruder-Nascimento T, Tirapelli CR. Reactive Oxygen Species Are Central Mediators of Vascular Dysfunction and Hypertension Induced by Ethanol Consumption. Antioxidants (Basel) 2023; 12:1813. [PMID: 37891892 PMCID: PMC10604002 DOI: 10.3390/antiox12101813] [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: 09/04/2023] [Revised: 09/23/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
Consumption of high amounts of ethanol is a risk factor for development of cardiovascular diseases such as arterial hypertension. The hypertensive state induced by ethanol is a complex multi-factorial event, and oxidative stress is a pathophysiological hallmark of vascular dysfunction associated with ethanol consumption. Increasing levels of reactive oxygen species (ROS) in the vasculature trigger important processes underlying vascular injury, including accumulation of intracellular Ca2+ ions, reduced bioavailability of nitric oxide (NO), activation of mitogen-activated protein kinases (MAPKs), endothelial dysfunction, and loss of the anticontractile effect of perivascular adipose tissue (PVAT). The enzyme nicotinamide adenine dinucleotide phosphate (NADPH) oxidase plays a central role in vascular ROS generation in response to ethanol. Activation of the renin-angiotensin-aldosterone system (RAAS) is an upstream mechanism which contributes to NADPH oxidase stimulation, overproduction of ROS, and vascular dysfunction. This review discusses the mechanisms of vascular dysfunction induced by ethanol, detailing the contribution of ROS to these processes. Data examining the association between neuroendocrine changes and vascular oxidative stress induced by ethanol are also reviewed and discussed. These issues are of paramount interest to public health as ethanol contributes to blood pressure elevation in the general population, and it is linked to cardiovascular conditions and diseases.
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Affiliation(s)
- Júlio C. Padovan
- Laboratory of Blood and Vascular Biology, The Rockefeller University, New York, NY 10065, USA;
| | - Thales M. H. Dourado
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto 14040-902, SP, Brazil; (T.M.H.D.); (G.F.P.)
- Departamento de Enfermagem Psiquiátrica e Ciências Humanas, Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-902, SP, Brazil
| | - Gustavo F. Pimenta
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto 14040-902, SP, Brazil; (T.M.H.D.); (G.F.P.)
- Departamento de Enfermagem Psiquiátrica e Ciências Humanas, Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-902, SP, Brazil
| | - Thiago Bruder-Nascimento
- Department of Pediatrics and Vascular Medicine Institute (VMI), University of Pittsburgh, Pittsburgh, PA 15260, USA;
| | - Carlos R. Tirapelli
- Departamento de Enfermagem Psiquiátrica e Ciências Humanas, Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-902, SP, Brazil
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