1
|
Rocha HNM, Batista GMS, Storch AS, Garcia VP, Teixeira GF, Mentzinger J, Gomes EAC, Campos MO, Nóbrega ACL, Rocha NG. Mental stress induces endothelial dysfunction by AT1R-mediated redox imbalance in overweight/obese men. Braz J Med Biol Res 2023; 56:e12547. [PMID: 36995873 PMCID: PMC10041671 DOI: 10.1590/1414-431x2023e12547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 02/16/2023] [Indexed: 03/31/2023] Open
Abstract
The main goal of this study was to determine whether oxidative imbalance mediated by AT1 receptor (AT1R) is responsible for deleterious endothelial responses to mental stress (MS) in overweight/obese class I men. Fifteen overweight/obese men (27±7 years old; 29.8±2.6 kg/m2) participated in three randomized experimental sessions with oral administration of the AT1R blocker olmesartan (40 mg; AT1R blockade) or ascorbic acid (AA; 3g) infusion or placebo [both intravenously (0.9% NaCl) and orally]. After two hours, endothelial function was determined by flow-mediated dilation (FMD) before (baseline), 30 min (30MS), and 60 min (60MS) after a five-minute acute MS session (Stroop Color Word Test). Blood was collected before (baseline), during MS, and 60 min after MS for redox homeostasis profiling: lipid peroxidation (TBARS; thiobarbituric acid reactive species), protein carbonylation, and catalase activity by colorimetry and superoxide dismutase (SOD) activity by an ELISA kit. At the placebo session, FMD significantly decreased 30MS (P=0.05). When compared to baseline, TBARS (P<0.02), protein carbonylation (P<0.01), catalase (P<0.01), and SOD (P<0.01) increased during the placebo session. During AT1R blockade, FMD increased 30 min after MS (P=0.01 vs baseline; P<0.01 vs placebo), while AA infusion increased FMD only 60 min after MS. No differences were observed during MS with the AT1R blockade and AA regarding TBARS, protein carbonylation, catalase, and SOD. AT1R-mediated redox imbalances played an important role in endothelial dysfunction to mental stress.
Collapse
Affiliation(s)
- H N M Rocha
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia - (In)Atividade Física e Exercício, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - G M S Batista
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia - (In)Atividade Física e Exercício, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - A S Storch
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia - (In)Atividade Física e Exercício, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - V P Garcia
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia - (In)Atividade Física e Exercício, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - G F Teixeira
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia - (In)Atividade Física e Exercício, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - J Mentzinger
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia - (In)Atividade Física e Exercício, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - E A C Gomes
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia - (In)Atividade Física e Exercício, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - M O Campos
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - A C L Nóbrega
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia - (In)Atividade Física e Exercício, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | - N G Rocha
- Laboratório de Ciências do Exercício, Departamento de Fisiologia e Farmacologia, Universidade Federal Fluminense, Niterói, RJ, Brasil
- Instituto Nacional de Ciência e Tecnologia - (In)Atividade Física e Exercício, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Universidade Federal Fluminense, Niterói, RJ, Brasil
| |
Collapse
|
2
|
Batista GMS, Rocha HNM, Storch AS, Garcia VP, Teixeira GF, Mentzinger J, Gomes EAC, Velasco LL, Nóbrega ACL, Rocha NG. Ascorbic acid inhibits vascular remodeling induced by mental stress in overweight/obese men. Life Sci 2020; 250:117554. [PMID: 32184123 DOI: 10.1016/j.lfs.2020.117554] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 02/28/2020] [Accepted: 03/13/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Mental stress (MS) is related to endothelial dysfunction in overweight/obese men. It is believed that the pro-oxidant profile, associated with an imbalance in the vascular remodeling process, may contribute to deleterious effects of MS on endothelial function. However, it is unknown whether administration of ascorbic acid (AA), a potent antioxidant, can prevent oxidative and remodeling dysfunction during MS in these subjects. METHODS Fourteen overweight/obese grade I men (27 ± 7 years; 29.7 ± 2.6 kg·m-2) underwent the Stroop Color Word Test for 5 min to induce MS after AA (3 g) or placebo (PL, 0.9% NaCl) intravenous infusions. Venous blood samples were collected at baseline and the last minute of MS to measure nitrite concentration (chemiluminescence), protein carbonylation, thiobarbituric acid reactive substances (TBARS) and catalase activity (colorimetric assays), superoxide dismutase (SOD; immunoenzymatic assay), activities of active/inactive (pro) forms of metalloproteinases-9 and -2 (MMP; zymography) and its respective tissue inhibitors concentration (TIMP-1 and TIMP-2; immunoenzymatic assays). RESULTS At baseline, MMP-9 activity (p < 0.01), the MMP-9/proMMP-9 ratio (p = 0.02) and TIMP-1 concentration (p = 0.05) were reduced, whereas proMPP-9 activity was increased (p = 0.02) after AA compared to PL infusion. After PL infusion, MS increased protein carbonylation (p < 0.01), catalase (p < 0.01), and the MMP-9/proMMP-9 ratio (p = 0.04) when compared to baseline. AA infusion reduced protein carbonylation (p = 0.02), MMP-9 activity (p < 0.01), and MMP-9/pro-MMP-9 ratio (p < 0.01), while SOD (p = 0.04 vs baseline), proMPP-9 (p < 0.01 vs PL), MMP-2 (p < 0.01 vs PL) and TIMP-2 (p = 0.02 vs baseline) remained elevated during MS. CONCLUSIONS AA appears to minimize the oxidative imbalance and vascular remodeling induced by MS.
Collapse
Affiliation(s)
- G M S Batista
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil; Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil
| | - H N M Rocha
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil; Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil
| | - A S Storch
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil; Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil
| | - V P Garcia
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil; Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil
| | - G F Teixeira
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil; Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil
| | - J Mentzinger
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil; Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil
| | - E A C Gomes
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil
| | - L L Velasco
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil; Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil
| | - A C L Nóbrega
- Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil
| | - N G Rocha
- Laboratory of Integrative Cardiometabology, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil; Laboratory of Exercise Sciences, Department of Physiology and Pharmacology, Fluminense Federal University, Brazil.
| |
Collapse
|