1
|
Bernardo EM, Pedroza AADS, Ferreira DJS, de Andrade SC, Rozendo A, Fernandes MSDS, Silva TL, Fernandes MP, Lagranha CJ. The deleterious effects of maternal protein deprivation on the brainstem are minimized with moderate physical activity by offspring during early life. Appl Physiol Nutr Metab 2024; 49:157-166. [PMID: 37816257 DOI: 10.1139/apnm-2023-0122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
Maternal protein malnutrition during developmental periods might impair the redox state and the brain's excitatory/inhibitory neural network, increasing central sympathetic tone. Conversely, moderate physical exercise at an early age reduces the risk of chronic diseases. Thus, we hypothesized that a moderate training protocol could reduce the harmful effects of a low-protein maternal diet on the brainstem of young male offspring. We used a rat model of maternal protein restriction during the gestational and lactation period followed by an offspring's continuous treadmill exercise. Pregnant rats were divided into two groups according to the protein content in the diet: normoprotein (NP), receiving 17% of casein, and low protein (LP), receiving 8% of casein until the end of lactation. At 30 days of age, the male offspring were further subdivided into sedentary (NP-Sed and LP-Sed) or exercised (NP-Ex and LP-Ex) groups. Treadmill exercise was performed as follows: 4 weeks, 5 days/week, 60 min/day at 50% of maximal running capacity. The trained animals performed a treadmill exercise at 50% of the maximal running capacity, 60 min/day, 5 days/week, for 4 weeks. Our results indicate that a low-protein diet promotes deficits in the antioxidant system and a likely mitochondrial uncoupling. On the other hand, physical exercise restores the redox balance, which leads to decreased oxidative stress caused by the diet. In addition, it also promotes benefits to GABAergic inhibitory signaling. We conclude that regular moderate physical exercise performed in youthhood protects the brainstem against changes induced by maternal protein restriction.
Collapse
Affiliation(s)
| | | | | | - Severina Cassia de Andrade
- Neuropsyquiatry and Behavioral Science Graduate Program, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
| | - Allifer Rozendo
- Laboratory of Biochemistry and Exercise Biochemistry/CAV, Federal University of Pernambuco, Vitoria de Santo Antao, PE, Brazil
| | | | - Tercya Lucidi Silva
- Neuropsyquiatry and Behavioral Science Graduate Program, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
| | - Mariana Pinheiro Fernandes
- Laboratory of Biochemistry and Exercise Biochemistry/CAV, Federal University of Pernambuco, Vitoria de Santo Antao, PE, Brazil
| | - Claudia J Lagranha
- Biochemistry and Physiology Graduate Program, Federal University of Pernambuco, Recife, PE, Brazil
- Neuropsyquiatry and Behavioral Science Graduate Program, Federal University of Pernambuco (UFPE), Recife, Pernambuco, Brazil
- Laboratory of Biochemistry and Exercise Biochemistry/CAV, Federal University of Pernambuco, Vitoria de Santo Antao, PE, Brazil
| |
Collapse
|
2
|
Reduction of oxidative stress and inflammatory signaling in the commissural nucleus of the solitary tract (commNTS) and rostral ventrolateral medulla (RVLM) in treadmill trained rats. Brain Res 2021; 1769:147582. [PMID: 34314729 DOI: 10.1016/j.brainres.2021.147582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 11/21/2022]
Abstract
Inflammation has been associated with cardiovascular diseases and the key point is the generation of reactive oxygen species (ROS). Exercise modulates medullary neurons involved in cardiovascular control. We investigated the effect of chronic exercise training (Tr) in treadmill running on gene expression (GE) of ROS and inflammation in commNTS and RVLM neurons. Male Wistar rats (N = 7/group) were submitted to training in a treadmill running (1 h/day, 5 days/wk/10 wks) or maintained sedentary (Sed). Superoxide dismutase (SOD), catalase (CAT), neuroglobin (Ngb), Cytoglobin (Ctb), NADPH oxidase (Nox), cicloxigenase-2 (Cox-2), and neuronal nitric oxide synthase (NOS1) gene expression were evaluated in commNTS and RVLM neurons by qPCR. In RVLM, Tr rats increased Ngb (1.285 ± 0.03 vs. 0.995 ± 0.06), Cygb (1.18 ± 0.02 vs.0.99 ± 0.06), SOD (1.426 ± 0.108 vs. 1.00 ± 0.08), CAT (1.34 ± 0.09 vs. 1.00 ± 0.08); and decreased Nox (0.55 ± 0.146 vs. 1.001 ± 0.08), Cox-2 (0.335 ± 0.05 vs. 1.245 ± 0.02), NOS1 (0.51 ± 0.08 vs. 1.08 ± 0.209) GE compared to Sed. In commNTS, Tr rats increased SOD (1.384 ± 0.13 vs. 0.897 ± 0.101), CAT GE (1.312 ± 0.126 vs. 0.891 ± 0.106) and decreased Cox-2 (0.052 ± 0.011 vs. 1.06 ± 0.207) and NOS1 (0.1550 ± 0.03559 vs. 1.122 ± 0.26) GE compared to Sed. Therefore, GE of proteins of the inflammatory process reduced while GE of antioxidant proteins increased in the commNTS and RVLM after training, suggesting a decrease in oxidative stress of downstream pathways mediated by nitric oxide.
Collapse
|
3
|
Sun JC, Tan X, Ge LJ, Xu MJ, Wang WZ. The Release of Nitric Oxide Is Involved in the β-Arrestin1-Induced Antihypertensive Effect in the Rostral Ventrolateral Medulla. Front Physiol 2021; 12:694135. [PMID: 34220554 PMCID: PMC8249856 DOI: 10.3389/fphys.2021.694135] [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] [Received: 04/12/2021] [Accepted: 05/18/2021] [Indexed: 11/25/2022] Open
Abstract
β-Arrestin1 is a multifunctional scaffold protein with the ability to interact with diverse signaling molecules independent of G protein-coupled receptors. We previously reported that overexpression of β-arrestin1 in the rostral ventrolateral medulla (RVLM) decreased blood pressure (BP) and renal sympathetic nerve activity (RSNA) in spontaneously hypertensive rats (SHRs). Nitric oxide (NO) is widely reported to be involved in central cardiovascular regulation. The goal of this study was to investigate whether NO signaling contributes to the β-arrestin1-mediated antihypertensive effect in the RVLM. It was found that bilateral injection of adeno-associated virus containing Arrb1 gene (AAV-Arrb1) into the RVLM of SHRs significantly increased NO production and NO synthase (NOS) activity. Microinjection of the non-selective NOS inhibitor N-nitro-L-arginine methyl ester (L-NAME; 10 nmol) into the RVLM prevented the β-arrestin1-induced cardiovascular inhibitory effect. Furthermore, β-arrestin1 overexpression in the RVLM significantly upregulated the expression of phosphorylated neuronal NOS (nNOS) by 3.8-fold and extracellular regulated kinase 1/2 (ERK1/2) by 5.6-fold in SHRs. The β-arrestin1-induced decrease in BP and RSNA was significantly abolished by treatment with ERK1/2 small interfering RNA (ERK1/2 siRNA). Moreover, ERK1/2 siRNA attenuated the β-arrestin1-induced NO production, NOS activity, and nNOS phosphorylation in the RVLM. Taken together, these data demonstrate that the antihypertensive effect of β-arrestin1 in the RVLM is mediated by nNOS-derived NO release, which is associated with ERK1/2 activation.
Collapse
Affiliation(s)
- Jia-Cen Sun
- Polar Medical Research Center and Department of Physiology, Naval Medical Center, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Xing Tan
- Polar Medical Research Center and Department of Physiology, Naval Medical Center, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Lian-Jie Ge
- Polar Medical Research Center and Department of Physiology, Naval Medical Center, Naval Medical University (Second Military Medical University), Shanghai, China
| | - Ming-Juan Xu
- Department of Obstetrics and Gynecology, Changhai Hospital, Naval Medical University, Shanghai, China
| | - Wei-Zhong Wang
- Polar Medical Research Center and Department of Physiology, Naval Medical Center, Naval Medical University (Second Military Medical University), Shanghai, China
| |
Collapse
|
4
|
Jardim NS, Müller SG, Nogueira CW. Swimming training mitigates the sex-specific hepatic disruption caused by a high-calorie diet: The putative modulation of Nrf2/Keap-1 pathway in male mice. Cell Biochem Funct 2021; 39:646-657. [PMID: 33720434 DOI: 10.1002/cbf.3631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/13/2021] [Accepted: 01/26/2021] [Indexed: 11/07/2022]
Abstract
This study investigated whether swimming protocol induces adaptations to sex-specific oxidative stress and Nrf2/Keap-1 pathway in the liver of mice fed a high-calorie diet (HCD) during the early life period. Male and female Swiss mice were fed a standard or high-calorie (enriched with 20% lard and 20% corn syrup) diets, and the trained mice were subjected to a swimming protocol (5 days/week) from 21st to 49th postnatal days. Males fed a HCD had more pronounced alterations in all parameters evaluated than females. Although there was no increase in body weight, the fat deposition was higher in male mice exposed to diet. The intake of HCD induced dyslipidemia mainly in males. In a sex-dependent manner, the hepatic markers of oxidative damage, antioxidant defences, and a sensitive sulfhydryl protein were altered in mice fed a HCD. Swimming counteracted dyslipidemia, hepatic oxidative stress, and the Nrf2/Keap-1 signalling downregulation, in a sex-dependent manner, in mice exposed to a HCD. These findings demonstrate that a non-pharmacological therapy, swimming protocol, contributed to adaptations of sex-specific hepatic oxidative stress and Nrf2/Keap-1 regulation in male mice fed a HCD.
Collapse
Affiliation(s)
- Natália Silva Jardim
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Sabrina Grendene Müller
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | - Cristina Wayne Nogueira
- Laboratório de Síntese, Reatividade e Avaliação Farmacológica e Toxicológica de Organocalcogênios, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Santa Maria, Brazil
| |
Collapse
|
5
|
de Ataides Raquel H, Souza Guazelli CF, Verri WA, Michelini LC, Martins-Pinge MC. Swimming training reduces iNOS expression, augments the antioxidant defense and reduces sympathetic responsiveness in the rostral ventrolateral medulla of normotensive male rats. Brain Res Bull 2021; 170:225-233. [PMID: 33631270 DOI: 10.1016/j.brainresbull.2021.02.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/17/2021] [Accepted: 02/21/2021] [Indexed: 11/30/2022]
Abstract
We sought to investigate whether RVLM iNOS activity and oxidative profile may participate in the reduction of sympathetic responsiveness in swimming trained normotensive rats. Sedentary (S) and swimming trained (T) Wistar male rats chronically instrumented with an arterial catheter and guide cannula into the RVLM were submitted to continuous pressure and heart rate (HR) recordings and determination of autonomic control (power spectral analysis) before and after unilateral RVLM iNOS inhibition (aminoguanidine, 250 pmol/100 nL). Other S and T rats received local l-glutamate microinjection (5 nmol/100 nL). In separate S and T groups not submitted to brainstem cannulation, fresh bilateral RVLM punchs were collected for iNOS gene expression (qPCR); reduced glutathione and lipid peroxidation quantification (spectrophotometry); iron-reducing antioxidant (FRAP) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) radical cation (ABTS˙+) scavenger assays. iNOS gene expression was confirmed in fixed RVLM slices (immunofluorescence). T rats exhibited resting bradycardia, lower sympathovagal balance, reduced RVLM iNOS gene/protein expression and higher antioxidant capacity. Decreased iNOS expression was positively correlated with reduced HR. Pressor and tachycardic response to l-Glutamate were smaller in T rats. Aminoguanidine microinjection reduced sympathetic activity in S rats but did not change it in T rats expressing reduced RVLM iNOS content. Our data indicate that iNOS, expressed in the RVLM of normotensive male rats, has tonic effects on sympathetic activity and that swimming training is an efficient tool to reduce iNOS expression and augment the antioxidant defense, thus reducing glutamatergic responsiveness and sympathetic drive to cardiovascular effectors.
Collapse
Affiliation(s)
- Hiviny de Ataides Raquel
- Departament of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil; Departament of Physiology & Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Carla Fabiana Souza Guazelli
- Departament of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Waldiceu A Verri
- Departament of Pathological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil
| | - Lisete C Michelini
- Departament of Physiology & Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Marli Cardoso Martins-Pinge
- Departament of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina, PR, Brazil.
| |
Collapse
|
6
|
de Sousa GG, Barbosa MA, Barbosa CM, Lima TC, Souza Dos Santos RA, Campagnole-Santos MJ, Alzamora AC. Different reactive species modulate the hypotensive effect triggered by angiotensins at CVLM of 2K1C hypertensive rats. Peptides 2020; 134:170409. [PMID: 32950566 DOI: 10.1016/j.peptides.2020.170409] [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: 04/15/2020] [Revised: 08/20/2020] [Accepted: 09/15/2020] [Indexed: 11/18/2022]
Abstract
Hypertension is associated with increased central activity of the renin-angiotensin system (RAS) and oxidative stress. Here, we evaluated whether reactive species and neurotransmitters could contribute to the hypotensive effect induced by angiotensin (Ang) II and Ang-(1-7) at the caudal ventrolateral medulla (CVLM) in renovascular hypertensive rats (2K1C). Therefore, we investigated the effect of Ang II, Ang-(1-7), and the Ang-(1-7) antagonist A-779 microinjected before and after CVLM microinjection of the nitric oxide (NO)-synthase inhibitor, (L-NAME), vitamin C (Vit C), bicuculline, or kynurenic acid in 2K1C and SHAM rats. Baseline values of the mean arterial pressure (MAP) in 2K1C rats were higher than in SHAM rats. CVLM microinjection of Ang II, Ang-(1-7), l-NAME, or bicuculline induced decreases in the MAP in SHAM and 2K1C rats. In addition, Vit C and A-779 produced decreases in the MAP only in 2K1C rats. Kynurenic acid increased the MAP in both SHAM and 2K1C rats. Only the Ang-(1-7) effect was increased by l-NAME and reduced by bicuculline in SHAM rats. L-NAME also reduced the A-779 effect in 2K1C rats. Only the Ang II effect was abolished by CVLM Vit C and enhanced by CVLM kynurenic acid in SHAM and 2K1C rats. Overall, the superoxide anion and glutamate participated in the hypotensive effect of Ang II, while NO and GABA participated in the hypotensive effect of Ang-(1-7) in CVLM. The higher hypotensive response of A-779 in the CVLM of 2K1C rats suggests that Ang-(1-7) contributes to renovascular hypertension.
Collapse
Affiliation(s)
- Graziele Galdino de Sousa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Maria Andréa Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Claudiane Maria Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Taynara Carolina Lima
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Robson Augusto Souza Dos Santos
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria José Campagnole-Santos
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Andréia Carvalho Alzamora
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Brazil; Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil.
| |
Collapse
|
7
|
Barros MADV, de Brito Alves JL, Barros RGN, Santana E Silva M, Nasser S, Tourneur Y, Leandro CVG, Vidal H, Pirola L, Costa-Silva JH. Effects of maternal protein restriction on central and peripheral renin-angiotensin systems in male rat offspring. Life Sci 2020; 263:118574. [PMID: 33049280 DOI: 10.1016/j.lfs.2020.118574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/26/2020] [Accepted: 10/04/2020] [Indexed: 11/18/2022]
Abstract
AIMS We investigated the involvement of the renin angiotensin system (RAS) on the cardiorespiratory control in rats from dams fed with a low-protein diet. MAIN METHODS Male offspring were obtained from dams fed a normoprotein diet (NP, 17% casein) and low-protein diet (LP, 8% casein) during pregnancy and lactation. Direct measurements of arterial pressure (AP), heart rate (HR) and respiratory frequency (RF) were recorded in awake 90-day-old at resting and after losartan potassium through either intracerebroventricular (ICV) microinjections or intravenous (IV) administration. Cardiovascular variability was evaluated by spectral analysis. Peripheral chemoreflex sensitivity was assessed through the potassium cyanide (KCN; 40 μg/0.1 ml/rat, IV). Gene expression was evaluated by qPCR, and MAPK (Mitogen Activated Protein Kinase) expression was evaluated by western blot. KEY FINDINGS The LP offspring had higher mean AP (MAP) and RF than NP offspring. In the spectral analysis, the LP rats also showed higher low frequency of systolic AP (NP: 2.7 ± 0.3 vs. LP: 5.0 ± 1.0 mmHg). After ICV losartan, MAP and RF in LP rats remained higher than those in NP rats, but without changes in HR. The peripheral chemoreflex was similar between the groups. LP group had lower gene expression of Rac1 (Ras-related C3 botulinum toxin substrate 1) (NP: 1.13 ± 0.06 vs. LP: 0.88 ± 0.08). Peripherally, LP rats had larger delta of MAP after IV losartan (NP: -9.8 ± 2 vs. LP: -23 ± 6 mmHg), without changes in HR and RF. SIGNIFICANCE In rats, the RAS participates peripherally, but not centrally, in the maintenance of arterial hypertension in male offspring induced by maternal protein restriction.
Collapse
Affiliation(s)
- Monique Assis de Vasconcelos Barros
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680 Vitória de Santo Antão, Brazil; Graduate Program in Nutrition, Health Sciences Center, Federal University of Pernambuco, UFPE, 50670-901, Recife, Brazil; Carmen (Cardiology, Metabolism and Nutrition) Laboratory, INSERM U1060, Lyon-1 University, South Lyon Medical Faculty, 69921 Oullins, France
| | - José Luiz de Brito Alves
- Department of Nutrition, Health Sciences Center, Federal University of Paraíba, UFPB, João Pessoa 58051900, Brazil
| | - Rayssa Gabriella Nery Barros
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680 Vitória de Santo Antão, Brazil
| | - Manuel Santana E Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680 Vitória de Santo Antão, Brazil
| | - Souad Nasser
- Carmen (Cardiology, Metabolism and Nutrition) Laboratory, INSERM U1060, Lyon-1 University, South Lyon Medical Faculty, 69921 Oullins, France
| | - Yves Tourneur
- Carmen (Cardiology, Metabolism and Nutrition) Laboratory, INSERM U1060, Lyon-1 University, South Lyon Medical Faculty, 69921 Oullins, France
| | - Carol Virgínia Gois Leandro
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680 Vitória de Santo Antão, Brazil; Graduate Program in Nutrition, Health Sciences Center, Federal University of Pernambuco, UFPE, 50670-901, Recife, Brazil
| | - Hubert Vidal
- Carmen (Cardiology, Metabolism and Nutrition) Laboratory, INSERM U1060, Lyon-1 University, South Lyon Medical Faculty, 69921 Oullins, France
| | - Luciano Pirola
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680 Vitória de Santo Antão, Brazil; Carmen (Cardiology, Metabolism and Nutrition) Laboratory, INSERM U1060, Lyon-1 University, South Lyon Medical Faculty, 69921 Oullins, France
| | - João Henrique Costa-Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Academic Center of Vitoria (CAV), Federal University of Pernambuco, 55608-680 Vitória de Santo Antão, Brazil; Graduate Program in Nutrition, Health Sciences Center, Federal University of Pernambuco, UFPE, 50670-901, Recife, Brazil; Carmen (Cardiology, Metabolism and Nutrition) Laboratory, INSERM U1060, Lyon-1 University, South Lyon Medical Faculty, 69921 Oullins, France.
| |
Collapse
|
8
|
Ally A, Powell I, Ally MM, Chaitoff K, Nauli SM. Role of neuronal nitric oxide synthase on cardiovascular functions in physiological and pathophysiological states. Nitric Oxide 2020; 102:52-73. [PMID: 32590118 DOI: 10.1016/j.niox.2020.06.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/15/2020] [Accepted: 06/15/2020] [Indexed: 12/16/2022]
Abstract
This review describes and summarizes the role of neuronal nitric oxide synthase (nNOS) on the central nervous system, particularly on brain regions such as the ventrolateral medulla (VLM) and the periaqueductal gray matter (PAG), and on blood vessels and the heart that are involved in the regulation and control of the cardiovascular system (CVS). Furthermore, we shall also review the functional aspects of nNOS during several physiological, pathophysiological, and clinical conditions such as exercise, pain, cerebral vascular accidents or stroke and hypertension. For example, during stroke, a cascade of molecular, neurochemical, and cellular changes occur that affect the nervous system as elicited by generation of free radicals and nitric oxide (NO) from vulnerable neurons, peroxide formation, superoxides, apoptosis, and the differential activation of three isoforms of nitric oxide synthases (NOSs), and can exert profound effects on the CVS. Neuronal NOS is one of the three isoforms of NOSs, the others being endothelial (eNOS) and inducible (iNOS) enzymes. Neuronal NOS is a critical homeostatic component of the CVS and plays an important role in regulation of different systems and disease process including nociception. The functional and physiological roles of NO and nNOS are described at the beginning of this review. We also elaborate the structure, gene, domain, and regulation of the nNOS protein. Both inhibitory and excitatory role of nNOS on the sympathetic autonomic nervous system (SANS) and parasympathetic autonomic nervous system (PANS) as mediated via different neurotransmitters/signal transduction processes will be explored, particularly its effects on the CVS. Because the VLM plays a crucial function in cardiovascular homeostatic mechanisms, the neuroanatomy and cardiovascular regulation of the VLM will be discussed in conjunction with the actions of nNOS. Thereafter, we shall discuss the up-to-date developments that are related to the interaction between nNOS and cardiovascular diseases such as hypertension and stroke. Finally, we shall focus on the role of nNOS, particularly within the PAG in cardiovascular regulation and neurotransmission during different types of pain stimulus. Overall, this review focuses on our current understanding of the nNOS protein, and provides further insights on how nNOS modulates, regulates, and controls cardiovascular function during both physiological activity such as exercise, and pathophysiological conditions such as stroke and hypertension.
Collapse
Affiliation(s)
- Ahmmed Ally
- Arkansas College of Osteopathic Medicine, Fort Smith, AR, USA.
| | - Isabella Powell
- All American Institute of Medical Sciences, Black River, Jamaica
| | | | - Kevin Chaitoff
- Interventional Rehabilitation of South Florida, West Palm Beach, FL, USA
| | - Surya M Nauli
- Chapman University and University of California, Irvine, CA, USA.
| |
Collapse
|
9
|
Lima TC, Barbosa MA, Costa DC, Becker LK, Cardoso LM, Alzamora AC. Fitness is improved by adjustments in muscle intracellular signaling in rats with renovascular hypertension 2K1C undergoing voluntary physical exercise. Life Sci 2020; 250:117549. [PMID: 32179073 DOI: 10.1016/j.lfs.2020.117549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 03/05/2020] [Accepted: 03/12/2020] [Indexed: 02/08/2023]
Abstract
AIM To evaluate physical fitness and cardiovascular effects in rats with renovascular hypertension, two kidneys, one clip (2K1C) submitted to voluntary exercise (ExV). MAIN METHODS 24 h after surgery (SHAM and 2K1C) rats were submitted to ExV for one week (adaptation). ExV adherent rats were separated into exercise (2K1C-EX and SHAM-EX) or sedentary (2K1C-SED and SHAM-SED) groups. After 4 weeks, exhaustion test, plasma lactate, cardiovascular parameters were evaluated and gastrocnemius muscle was removed for evaluation of gene expression of muscle metabolism markers (PGC1α; AMPK, SIRT-1, UCP-3; MCP-1; LDH) and of the redox process. KEY FINDINGS ExV decreased blood lactate concentration and increased SOD and CAT activity and a SIRT-1 and UCP-3 gene expression in the gastrocnemius muscle of 2K1C-ExV rats compared to 2K1C-SED rats. Gene expressions of PGC1α, UCP-3, MCT-1, AMPK were higher in 2K1C-ExV rats compared to SHAM-SED rats. Blood pressure in 2K1C-ExV was lower compared to 2K1C-SED and higher in SHAM-SED rats. Reflex bradycardia in 2K1C-EX rats increased compared to 2K1C-SED and was similar to SHAM-SED. The variation in mean blood pressure induced by ganglion blocker hexamethonium and Ang II AT1 receptor antagonist, losartan in the 2K1C-ExV rats was smaller compared to the 2K1C-SED rats and it was similar to the SHAM-SED rats. SIGNIFICANCE O ExV induced adaptive responses in 2K1C-ExV rats by decreasing sympathetic and Ang II activities and stimulating intracellular signaling that favors redox balance and reduced blood lactate concentration. These adaptive responses, then, contribute to reduced arterial pressure, improved baroreflex sensitivity and physical fitness of 2K1C rats.
Collapse
Affiliation(s)
- Taynara Carolina Lima
- Núcleo de Pesquisa em Ciências Biológicas-Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Maria Andrea Barbosa
- Núcleo de Pesquisa em Ciências Biológicas-Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Daniela Caldeira Costa
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brasil; Núcleo de Pesquisa em Ciências Biológicas-Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Lenice Kappes Becker
- Núcleo de Pesquisa em Ciências Biológicas-Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Leonardo Máximo Cardoso
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brasil; Núcleo de Pesquisa em Ciências Biológicas-Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil; Departamento de Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Andréia Carvalho Alzamora
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brasil; Núcleo de Pesquisa em Ciências Biológicas-Programa de Pós-Graduação em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil; Departamento de Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil.
| |
Collapse
|
10
|
Wang R, Tian H, Guo D, Tian Q, Yao T, Kong X. Impacts of exercise intervention on various diseases in rats. JOURNAL OF SPORT AND HEALTH SCIENCE 2020; 9:211-227. [PMID: 32444146 PMCID: PMC7242221 DOI: 10.1016/j.jshs.2019.09.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 06/06/2019] [Accepted: 09/06/2019] [Indexed: 05/07/2023]
Abstract
BACKGROUND Exercise is considered as an important intervention for treatment and prevention of several diseases, such as osteoarthritis, obesity, hypertension, and Alzheimer's disease. This review summarizes decadal exercise intervention studies with various rat models across 6 major systems to provide a better understanding of the mechanisms behind the effects that exercise brought. METHODS PubMed was utilized as the data source. To collect research articles, we used the following terms to create the search: (exercise [Title] OR physical activity [Title] OR training [Title]) AND (rats [Title/Abstract] OR rat [Title/Abstract] OR rattus [Title/Abstract]). To best cover targeted studies, publication dates were limited to "within 11 years." The exercise intervention methods used for different diseases were sorted according to the mode, frequency, and intensity of exercise. RESULTS The collected articles were categorized into studies related to 6 systems or disease types: motor system (17 articles), metabolic system (110 articles), cardiocerebral vascular system (171 articles), nervous system (71 articles), urinary system (2 articles), and cancer (21 articles). Our review found that, for different diseases, exercise intervention mostly had a positive effect. However, the most powerful effect was achieved by using a specific mode of exercise that addressed the characteristics of the disease. CONCLUSION As a model animal, rats not only provide a convenient resource for studying human diseases but also provide the possibility for exploring the molecular mechanisms of exercise intervention on diseases. This review also aims to provide exercise intervention frameworks and optimal exercise dose recommendations for further human exercise intervention research.
Collapse
Affiliation(s)
- Ruwen Wang
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China
| | - Haili Tian
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China
| | - Dandan Guo
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China
| | - Qianqian Tian
- School of Kinesiology, Shanghai University of Sport, Shanghai 200438, China
| | - Ting Yao
- Division of Pediatric Endocrinology, Department of Pediatrics, UCLA Children's Discovery and Innovation Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA.
| | - Xingxing Kong
- Division of Pediatric Endocrinology, Department of Pediatrics, UCLA Children's Discovery and Innovation Institute, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA.
| |
Collapse
|
11
|
Alves DS, Barbosa DFS, Nogueira VO, Tourneur Y, Fontes DAF, Brito-Alves JL, Costa-Silva JH. Maternal protein restriction affects cardiovascular, but not respiratory response to L-glutamate microinjection into the NTS of conscious rats. Nutr Neurosci 2019; 24:907-918. [DOI: 10.1080/1028415x.2019.1692508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- D. S. Alves
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, UFPE, Vitória de Santo Antão, PE, Brazil
| | - D. F. S. Barbosa
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, UFPE, Vitória de Santo Antão, PE, Brazil
| | - V. O. Nogueira
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, UFPE, Vitória de Santo Antão, PE, Brazil
| | - Y. Tourneur
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, UFPE, Vitória de Santo Antão, PE, Brazil
| | - D. A. F. Fontes
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, UFPE, Vitória de Santo Antão, PE, Brazil
| | - J. L. Brito-Alves
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, UFPE, Vitória de Santo Antão, PE, Brazil
- Department of Nutrition, Federal University of Paraíba, UFPB, Brazil
| | - J. H. Costa-Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, UFPE, Vitória de Santo Antão, PE, Brazil
| |
Collapse
|
12
|
Sousa LE, Favero IFD, Bezerra FS, Souza ABFD, Alzamora AC. Environmental Enrichment Promotes Antioxidant Effect in the Ventrolateral Medulla and Kidney of Renovascular Hypertensive Rats. Arq Bras Cardiol 2019; 113:905-912. [PMID: 31482985 PMCID: PMC7020968 DOI: 10.5935/abc.20190166] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Accepted: 02/13/2019] [Indexed: 12/11/2022] Open
Abstract
Background Arterial hypertension is a precursor to the development of heart and renal failure, furthermore is associated with elevated oxidative markers. Environmental enrichment of rodents increases performance in memory tasks, also appears to exert an antioxidant effect in the hippocampus of normotensive rats. Objectives Evaluate the effect of environmental enrichment on oxidative stress in the ventrolateral medulla, heart, and kidneys of renovascular hypertensive rats. Methods Forty male Fischer rats (6 weeks old) were divided into four groups: normotensive standard condition (Sham-St), normotensive enriched environment (Sham-EE), hypertensive standard condition (2K1C-St), and hypertensive enriched environment (2K1C-EE). Animals were kept in enriched or standard cages for four weeks after all animals were euthanized. The level of significance was at p < 0.05. Results 2K1C-St group presented higher mean arterial pressure (mmHg) 147.0 (122.0; 187.0) compared to Sham-St 101.0 (94.0; 109.0) and Sham-EE 106.0 (90.8; 117.8). Ventrolateral medulla from 2K1C-EE had higher superoxide dismutase (SOD) (49.1 ± 7.9 U/mg ptn) and catalase activity (0.8 ± 0.4 U/mg ptn) compared to SOD (24.1 ± 9.8 U/mg ptn) and catalase activity (0.3 ± 0.1 U/mg ptn) in 2K1C-St. 2K1C-EE presented lower lipid oxidation (0.39 ± 0.06 nmol/mg ptn) than 2K1C-St (0.53 ± 0.22 nmol/mg ptn) in ventrolateral medulla. Furthermore, the kidneys of 2K1C-EE (11.9 ± 2.3 U/mg ptn) animals presented higher superoxide-dismutase activity than those of 2K1C-St animals (9.1 ± 2.3 U/mg ptn). Conclusion Environmental enrichment induced an antioxidant effect in the ventrolateral medulla and kidneys that contributes to reducing oxidative damage among hypertensive rats.
Collapse
|
13
|
Ye F, Wu Y, Chen Y, Xiao D, Shi L. Impact of moderate- and high-intensity exercise on the endothelial ultrastructure and function in mesenteric arteries from hypertensive rats. Life Sci 2019; 222:36-45. [PMID: 30825543 DOI: 10.1016/j.lfs.2019.01.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 01/16/2019] [Accepted: 01/16/2019] [Indexed: 12/20/2022]
Abstract
Oxidative stress (OS) influences vascular function and structure in spontaneously hypertensive rats (SHRs). It is also responsible for the decreased nitric oxide (NO) bioavailability that influences endothelial vasodilation. The effects of high-intensity exercise on endothelial function and ultrastructure in hypertension remain unknown. Thus, this study investigated the effects of moderate- and high-intensity exercise on hypertension-associated endothelial dysfunction and ultrastructural remodeling. Moderate-intensity (SHR-M) and high-intensity (SHRH) aerobic exercise training groups were compared in age-matched sedentary SHRs (SHRC) and normotensive Wistar-Kyoto rats (WKY-C). The results showed that the endothelial ultrastructure was impaired in the SHR-H and SHR-C groups. Glutathione peroxidase levels were significantly increased in the SHR-M group compared to the SHR-C group. MDA content was higher in the SHR-H group than in the SHR-C group, but the levels of antioxidant enzymes did not increase accordingly. Apocynin scavenging reactive oxygen species (ROS) ameliorated endothelium-dependent vasodilator function in the SHR-H group. However, the SHR-M and WKY-C groups abolished the increased vasodilation induced by apocynin. L-NAME, a NO synthase inhibitor, was applied to isolated mesenteric arteries (MAs) to evaluate NO contribution. Moderate-intensity exercise reversed the decreased NO contribution to MAs in hypertension, and high-intensity exercise aggravated this change. These data suggest that moderate-intensity exercise ameliorated adverse remodeling of the endothelial ultrastructure and function in hypertension by decreasing oxidative stress and increasing NO contribution. However, high-intensity exercise exacerbated all of these changes by increasing OS and ROS contribution, and decreasing NO contribution.
Collapse
Affiliation(s)
- Fang Ye
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China
| | - Ying Wu
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China
| | - Yu Chen
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China
| | - Daliao Xiao
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA.
| | - Lijun Shi
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China.
| |
Collapse
|
14
|
Maglione AV, Taranto P, Hamermesz B, Souza JS, Cafarchio EM, Ogihara CA, Maciel RMB, Giannocco G, Sato MA. Impact of swimming exercise on inflammation in medullary areas of sympathetic outflow control in spontaneously hypertensive rats. Metab Brain Dis 2018; 33:1649-1660. [PMID: 29946957 DOI: 10.1007/s11011-018-0273-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 06/19/2018] [Indexed: 02/07/2023]
Abstract
Exercise reduces sympathetic activity (SA), arterial pressure and heart rate in spontaneously hypertensive rats (SHR). Exercise increases oxidative stress (OS) and inflammation is implicated in the generation of reactive oxygen species (ROS) and progression of hypertension. To unravel these effects of exercise and considering that SA is driven by medullary areas, we hypothesized that swimming exercise (SW) affects the gene expression (g.e.) of proteins involved in inflammation and OS in the commissural Nucleus of the Solitary Tract (cNTS) and Rostral ventrolateral medulla (RVLM), which control the sympathetic outflow in SHR. We used male SHR and Wistar rats (14-16wks-old) which were maintained sedentary (SED) or submitted to SW (1 h/day, 5 days/wk./6wks). The g.e. of cycloxygenase-2 (COX-2), interleukin 6 (IL-6), interleukin 10 (IL-10), AT-1 receptor (AT-1r), neuroglobin (Ngb) and cytoglobin (Ctb) in cNTS and RVLM was carried out by qPCR. We observed that COX-2 g.e. increased in SW-SHR in cNTS and RVLM compared to SED-SHR. The IL-6 g.e. reduced in RVLM in SW-SHR, whereas IL-10 g.e. increased in SW-SHR in comparison to SED-SHR. The AT-1r g.e. decreased in SW-SHR in cNTS and RVLM compared to SED-SHR. The Ngb and Ctb g.e. in cNTS neurons increased in SHR and Wistar rats submitted to SW compared to SED, but only Ctb g.e. increased in RVLM in SW-SHR and Wistar in comparison to SED. Therefore, the SW altered the g.e. in cNTS and RVLM for reducing the inflammation and ROS formation, which is increased particularly in SHR, consequently decreasing the OS.
Collapse
Affiliation(s)
- Andrea V Maglione
- Department of Morphology and Physiology, Faculdade de Medicina do ABC, 2000 Lauro Gomes Ave., Vila Sacadura Cabral, Santo Andre, SP, 09060-870, Brazil
| | - Patrícia Taranto
- Department of Morphology and Physiology, Faculdade de Medicina do ABC, 2000 Lauro Gomes Ave., Vila Sacadura Cabral, Santo Andre, SP, 09060-870, Brazil
| | - Bruno Hamermesz
- Department of Morphology and Physiology, Faculdade de Medicina do ABC, 2000 Lauro Gomes Ave., Vila Sacadura Cabral, Santo Andre, SP, 09060-870, Brazil
| | - Janaina S Souza
- Department of Medicine, Federal Univesity of Sao Paulo, Sao Paulo, SP, Brazil
| | - Eduardo M Cafarchio
- Department of Morphology and Physiology, Faculdade de Medicina do ABC, 2000 Lauro Gomes Ave., Vila Sacadura Cabral, Santo Andre, SP, 09060-870, Brazil
| | - Cristiana A Ogihara
- Department of Morphology and Physiology, Faculdade de Medicina do ABC, 2000 Lauro Gomes Ave., Vila Sacadura Cabral, Santo Andre, SP, 09060-870, Brazil
| | - Rui M B Maciel
- Department of Medicine, Federal Univesity of Sao Paulo, Sao Paulo, SP, Brazil
| | - Gisele Giannocco
- Department of Medicine, Federal Univesity of Sao Paulo, Sao Paulo, SP, Brazil
| | - Monica A Sato
- Department of Morphology and Physiology, Faculdade de Medicina do ABC, 2000 Lauro Gomes Ave., Vila Sacadura Cabral, Santo Andre, SP, 09060-870, Brazil.
| |
Collapse
|
15
|
Raquel HDA, Ferreira NZ, Lucchetti BFC, Falquetto B, Pinge-Filho P, Michelini LC, Martins-Pinge MC. The essential role of hypothalamic paraventricular nucleus nNOS in the modulation of autonomic control in exercised rats. Nitric Oxide 2018; 79:14-24. [DOI: 10.1016/j.niox.2018.07.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 05/24/2018] [Accepted: 07/02/2018] [Indexed: 12/31/2022]
|
16
|
Physical training improves thermogenesis and insulin pathway, and induces remodeling in white and brown adipose tissues. J Physiol Biochem 2018; 74:441-454. [PMID: 29797227 DOI: 10.1007/s13105-018-0637-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 05/09/2018] [Indexed: 12/18/2022]
Abstract
Physical training (PT) has been considered as a treatment in metabolic syndrome (MS), since it induces thermogenic activity in brown (BAT) and white (WAT) adipose tissues. We evaluated the therapeutic effect of PT on activity of WAT and BAT in rats with MS induced by high-fat diet (30% lard) for 13 weeks and submitted, for the last 6 weeks, to swimming or kept sedentary (SED) rats. MS-SED rats compared to control diet (CT-SED) rats showed low physical fitness and high levels of glucose, insulin, homeostasis evaluation of insulin resistance (HOMA-IR), homeostasis evaluation of the functional capacity of β-cells (HOMA-β), and blood pressure. The gastrocnemius muscle decreased in peroxisome proliferator-activated receptor gamma coactivator 1-alpha and beta (PGC-1α, PGC-1β), and uncoupled protein 2 and 3 (UCP2 and UCP3) expressions. Both WAT and BAT increased in the adipocyte area and decreased in blood vessels and fibroblast numbers. WAT increased in expression of pro-inflammatory adipokines and decreased in anti-inflammatory adipokine and adiponectin. WAT and gastrocnemius showed impairment in the insulin signaling pathway. In response to PT, MS rats showed increased physical fitness and restoration of certain biometric and biochemical parameters and blood pressure. PT also induced thermogenic modulations in skeletal muscle, WAT and BAT, and also improved the insulin signaling pathway. Collectively, PT was effective in treating MS by inducing improvement in physical fitness and interchangeable effects between skeletal muscle, WAT and BAT, suggesting a development of brown-like adipocyte cells.
Collapse
|
17
|
de Brito Alves JL, de Oliveira JMD, Ferreira DJS, Barros MADV, Nogueira VO, Alves DS, Vidal H, Leandro CG, Lagranha CJ, Pirola L, da Costa-Silva JH. Maternal protein restriction induced-hypertension is associated to oxidative disruption at transcriptional and functional levels in the medulla oblongata. Clin Exp Pharmacol Physiol 2017; 43:1177-1184. [PMID: 27612187 DOI: 10.1111/1440-1681.12667] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 08/31/2016] [Accepted: 09/06/2016] [Indexed: 01/11/2023]
Abstract
Maternal protein restriction during pregnancy and lactation predisposes the adult offspring to sympathetic overactivity and arterial hypertension. Although the underlying mechanisms are poorly understood, dysregulation of the oxidative balance has been proposed as a putative trigger of neural-induced hypertension. The aim of the study was to evaluate the association between the oxidative status at transcriptional and functional levels in the medulla oblongata and maternal protein restriction induced-hypertension. Wistar rat dams were fed a control (normal protein; 17% protein) or a low protein ((Lp); 8% protein) diet during pregnancy and lactation, and male offspring was studied at 90 days of age. Direct measurements of baseline arterial blood pressure (ABP) and heart rate (HR) were recorded in awakened offspring. In addition, quantitative RT-PCR was used to assess the mRNA expression of superoxide dismutase 1 (SOD1) and 2 (SOD2), catalase (CAT), glutathione peroxidase (GPx), Glutamatergic receptors (Grin1, Gria1 and Grm1) and GABA(A)-receptor-associated protein like 1 (Gabarapl1). Malondialdehyde (MDA) levels, CAT and SOD activities were examined in ventral and dorsal medulla. Lp rats exhibited higher ABP. The mRNA expression levels of SOD2, GPx and Gabarapl1 were down regulated in medullary tissue of Lp rats (P<.05, t test). In addition, we observed that higher MDA levels were associated to decreased SOD (approximately 45%) and CAT (approximately 50%) activities in ventral medulla. Taken together, our data suggest that maternal protein restriction induced-hypertension is associated with medullary oxidative dysfunction at transcriptional level and with impaired antioxidant capacity in the ventral medulla.
Collapse
Affiliation(s)
- José L de Brito Alves
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitoria de Santo Antão, Pernambuco, Brazil.,Carmen (Cardiology, Metabolism and Nutrition) Laboratory, INSERM U1060, South Lyon Medical Faculty, Lyon-1 University, Oullins, France
| | - Jéssica M D de Oliveira
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitoria de Santo Antão, Pernambuco, Brazil
| | - Diorginis J S Ferreira
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitoria de Santo Antão, Pernambuco, Brazil
| | - Monique A de V Barros
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitoria de Santo Antão, Pernambuco, Brazil
| | - Viviane O Nogueira
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitoria de Santo Antão, Pernambuco, Brazil
| | - Débora S Alves
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitoria de Santo Antão, Pernambuco, Brazil
| | - Hubert Vidal
- Carmen (Cardiology, Metabolism and Nutrition) Laboratory, INSERM U1060, South Lyon Medical Faculty, Lyon-1 University, Oullins, France
| | - Carol G Leandro
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitoria de Santo Antão, Pernambuco, Brazil
| | - Cláudia J Lagranha
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitoria de Santo Antão, Pernambuco, Brazil
| | - Luciano Pirola
- Carmen (Cardiology, Metabolism and Nutrition) Laboratory, INSERM U1060, South Lyon Medical Faculty, Lyon-1 University, Oullins, France
| | - João H da Costa-Silva
- Department of Physical Education and Sport Sciences, Federal University of Pernambuco, Vitoria de Santo Antão, Pernambuco, Brazil
| |
Collapse
|
18
|
Salehpour M, Khodagholi F, Zeinaddini Meymand A, Nourshahi M, Ashabi G. Exercise training with concomitant nitric oxide synthase inhibition improved anxiogenic behavior, spatial cognition, and BDNF/P70S6 kinase activation in 20-month-old rats. Appl Physiol Nutr Metab 2017; 43:45-53. [PMID: 28854337 DOI: 10.1139/apnm-2017-0313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
This study aimed to investigate the effect of exercise and nitric oxide synthase (NOS) inhibition on memory, anxiety, and protein levels of brain-derived neurotrophic factor (BDNF) and P70S6 kinase (P70S6K). Twenty-month-old rats were divided into 6 groups: a control group, 2 groups treated with l-nitro-arginine methyl ester (L-NAME) (25 or 100 mg/kg) for 63 days, 2 groups treated with L-NAME (25 or 100 mg/kg) for 63 days plus 2 months of exercise, and 1 group treated with exercise. Behavioral tests were conducted to determine the anxiolytic and memory-improving role of exercise and NOS inhibition. BDNF, P70S6K, and cleaved caspase-3 protein levels in the hippocampus and prefrontal cortex were evaluated by Western blotting. Exercise and L-NAME (25 mg/kg) or their combination had an anxiolytic effect and improved spatial memory in old rats compared with the control or exercised group, respectively. Exercise and treatment with a low dose of L-NAME (25 mg/kg) each increased BDNF and P70S6K in the hippocampus and prefrontal cortex compared with levels in control rats. In comparison with exercise alone, co-treatment with exercise and a low dose of L-NAME (25 mg/kg) also increased BDNF and P70S6K in the hippocampus. The neuronal level of cleaved caspase-3 was reduced in the L-NAME (25 mg/kg) + exercise group compared with the exercised group. The L-NAME (100 mg/kg) + exercise treatment had no positive behavioral or molecular effects compared with exercise alone. The protective role of NOS inhibition and aerobic exercise against aging is probably modulated via BDNF and P70S6K in the brain.
Collapse
Affiliation(s)
- Mojtaba Salehpour
- a Department of Sport Physiology, Faculty of Sport Sciences, Shahid Rajaee Teacher Training University, PO box 16875-163, Tehran, Iran
| | - Fariba Khodagholi
- b NeuroBiology Research Center, Shahid Beheshti University of Medical Sciences, PO box 19615-1178, Tehran, Iran
| | - Arman Zeinaddini Meymand
- c Neuroscience Research Center, Shahid Beheshti University of Medical Sciences, PO box 19615-1178, Tehran, Iran
| | - Maryam Nourshahi
- d Department of Sport Physiology, Faculty of Physical Education and Sport Sciences, Shahid Beheshti University, PO box 19839-6113, Tehran, Iran
| | - Ghorbangol Ashabi
- e Department of Physiology, Faculty of Medicine, Tehran University of Medical Sciences, PO box 141761-3151, Tehran, Iran
| |
Collapse
|
19
|
Wang T, Gao W, Xiao K, Liu Q, Jia R. Interaction between interleukin‑6 and angiotensin II receptor 1 in the hypothalamic paraventricular nucleus contributes to progression of heart failure. Mol Med Rep 2017; 15:4259-4265. [PMID: 28440487 DOI: 10.3892/mmr.2017.6495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 01/16/2017] [Indexed: 11/06/2022] Open
Abstract
The association between interleukin‑6 (IL‑6) and angiotensin II receptor 1 (AT1‑R) in modulating the progression of heart failure (HF) remains to be fully elucidated. The aim of the present study was to investigate the mechanism of IL‑6 and AT1‑R in a model of HF induced by surgery. Male Sprague‑Dawley rats were randomly divided into five groups, including sham surgery and vehicle groups. The animals were treated for 4 weeks via paraventricular nucleus infusion with either vehicle, losartan (LOS; 200 µg/day), IL‑6 (1 µg/day) or LOS and IL‑6 together (LOS+IL‑6). The rats with HF had higher levels of IL‑6, corticotropin‑releasing hormone (CRH) and norepinephrine (NE), and a lower level of neuronal nitric oxide synthase (nNOS), compared with the rats in the sham surgery group. Treatment with LOS attenuated the decrease in nNOS and the increases in IL‑6, CRH and NE; whereas treatment with IL‑6 facilitated the lower expression of nNOS and higher expression levels of IL‑6, CRH and NE. No differences in the expression levels of nNOS, CRH or NE were found between the LOS group and LOS+IL‑6 group. The results of the study demonstrated that IL‑6 contributed to the progression of HF via the AT1‑R pathway.
Collapse
Affiliation(s)
- Tao Wang
- Department of Cardiology, Medical School, Tai Shan Medical College, The Fourth People's Hospital of Jinan, Jinan, Shandong 250031, P.R. China
| | - Wen Gao
- Department of Cardiology, Medical School, Tai Shan Medical College, The Fourth People's Hospital of Jinan, Jinan, Shandong 250031, P.R. China
| | - Kun Xiao
- Department of Cardiology, Medical School, Tai Shan Medical College, The Fourth People's Hospital of Jinan, Jinan, Shandong 250031, P.R. China
| | - Qiang Liu
- Department of Cardiology, Medical School, Tai Shan Medical College, The Fourth People's Hospital of Jinan, Jinan, Shandong 250031, P.R. China
| | - Ruyi Jia
- Department of Cardiology, Medical School, Tai Shan Medical College, The Fourth People's Hospital of Jinan, Jinan, Shandong 250031, P.R. China
| |
Collapse
|
20
|
Zacarias AC, Barbosa MA, Guerra-Sá R, De Castro UGM, Bezerra FS, de Lima WG, Cardoso LM, Santos RASD, Campagnole-Santos MJ, Alzamora AC. Swimming training induces liver adaptations to oxidative stress and insulin sensitivity in rats submitted to high-fat diet. Redox Rep 2017; 22:515-523. [DOI: 10.1080/13510002.2017.1315513] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Aline Cruz Zacarias
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Maria Andrea Barbosa
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
- Programa de Pós-Graduação em Saúde e Nutrição, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Renata Guerra-Sá
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | | | - Frank Silva Bezerra
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Wanderson Geraldo de Lima
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Leonardo M. Cardoso
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| | - Robson Augusto Souza dos Santos
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria José Campagnole-Santos
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Andréia Carvalho Alzamora
- Departamento de Ciências Biológicas, Instituto de Ciências Exatas e Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
- Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
- Programa de Pós-Graduação em Saúde e Nutrição, Universidade Federal de Ouro Preto, Ouro Preto, MG, Brazil
| |
Collapse
|
21
|
The asymmetric dimethylarginine-mediated inhibition of nitric oxide in the rostral ventrolateral medulla contributes to regulation of blood pressure in hypertensive rats. Nitric Oxide 2017; 67:58-67. [PMID: 28392446 DOI: 10.1016/j.niox.2017.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 03/23/2017] [Accepted: 04/05/2017] [Indexed: 02/07/2023]
Abstract
Nitric oxide (NO) contributes to the central control of cardiovascular activity. The rostral ventrolateral medulla (RVLM) has been recognized as a pivotal region for maintaining basal blood pressure (BP) and sympathetic tone. It is reported that asymmetric dimethylarginine (ADMA), characterized as a cardiovascular risk marker, is an endogenous inhibitor of nitric oxide synthesis. The present was designed to determine the role of ADMA in the RVLM in the central control of BP in hypertensive rats. In Sprague Dawley (SD) rats, microinjection of ADMA into the RVLM dose-dependently increased BP, heart rate (HR), and renal sympathetic never activity (RSNA), but also reduced total NO production in the RVLM. In central angiotensin II (Ang II)-induced hypertensive rats and spontaneously hypertensive rat (SHR), the level of ADMA in the RVLM was increased and total NO production was decreased significantly, compared with SD rats treated vehicle infusion and WKY rats, respectively. These hypertensive rats also showed an increased protein level of protein arginine methyltransferases1 (PRMT1, which generates ADMA) and a decreased expression level of dimethylarginine dimethylaminohydrolases 1 (DDAH1, which degrades ADMA) in the RVLM. Furthermore, increased AMDA content and PRMT1 expression, and decreased levels of total NO production and DDAH1 expression in the RVLM in SHR were blunted by intracisternal infusion of the angiotensin II type 1 receptor (AT1R) blocker losartan. The current data indicate that the ADMA-mediated NO inhibition in the RVLM plays a critical role in involving in the central regulation of BP in hypertension, which may be associated with increased Ang II.
Collapse
|
22
|
Raquel HDA, Masson GS, Barna BF, Zanluqui NG, Pinge-Filho P, Michelini LC, Martins-Pinge MC. Swimming Training Modulates Nitric Oxide-Glutamate Interaction in the Rostral Ventrolateral Medulla in Normotensive Conscious Rats. Front Physiol 2016; 7:221. [PMID: 27378935 PMCID: PMC4904284 DOI: 10.3389/fphys.2016.00221] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 05/27/2016] [Indexed: 12/20/2022] Open
Abstract
We evaluated the effects of swimming training on nitric oxide (NO) modulation to glutamate microinjection within the rostral ventrolateral medulla (RVLM) in conscious freely moving rats. Male Wistar rats were submitted to exercise training (Tr) by swimming or kept sedentary (Sed) for 4 weeks. After the last training session, RVLM guide cannulas and arterial/venous catheters were chronically implanted. Arterial pressure (AP), heart rate (HR), and baroreflex control of HR (loading/unloading of baroreceptors) were recorded in conscious rats at rest. Pressor response to L-glutamate in the RVLM was compared before and after blockade of local nitric oxide (NO) production. In other Tr and Sed groups, brain was harvested for gene (qRT-PCR) and protein (immunohistochemistry) expression of NO synthase (NOS) isoforms and measurement of NO content (nitrite assay) within the RVLM. Trained rats exhibited resting bradycardia (average reduction of 9%), increased baroreflex gain (Tr: −4.41 ± 0.5 vs. Sed: −2.42 ± 0.31 b/min/mmHg), and unchanged resting MAP. The pressor response to glutamate was smaller in the Tr group (32 ± 4 vs. 53 ± 2 mmHg, p < 0.05); this difference disappeared after RVLM pretreatment with carboxy-PTIO (NO scavenger), Nw-Propyl-L-Arginine and L-NAME (NOS inhibitors). eNOS immunoreactivity observed mainly in RVLM capillaries was higher in Tr, but eNOS gene expression was reduced. nNOS gene and protein expression was slightly reduced (−29 and −9%, respectively, P > 0.05). Also, RVLM NO levels were significantly reduced in Tr (−63% vs. Sed). After microinjection of a NO-donor, the attenuated pressor response of L-glutamate in Tr group was restored. Data indicate that swimming training by decreasing RVLM NO availability and glutamatergic neurotransmission to locally administered glutamate may contribute to decreased sympathetic activity in trained subjects.
Collapse
Affiliation(s)
- Hiviny de A Raquel
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina Londrina, Brazil
| | - Gustavo S Masson
- Department of Physiology & Biophysics, Institute of Biomedical Sciences, University of São Paulo São Paulo, Brazil
| | - Barbara Falquetto Barna
- Department of Physiology & Biophysics, Institute of Biomedical Sciences, University of São Paulo São Paulo, Brazil
| | - Nágela G Zanluqui
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina Londrina, Brazil
| | - Phileno Pinge-Filho
- Department of Pathological Sciences, Center of Biological Sciences, State University of Londrina Londrina, Brazil
| | - Lisete C Michelini
- Department of Physiology & Biophysics, Institute of Biomedical Sciences, University of São Paulo São Paulo, Brazil
| | - Marli C Martins-Pinge
- Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina Londrina, Brazil
| |
Collapse
|