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Guzzoni V, Emerich de Abreu ICM, Bertagnolli M, Mendes RH, Belló-Klein A, Casarini DE, Flues K, Cândido GO, Paulini J, De Angelis K, Marcondes FK, Irigoyen MC, Sousa Cunha T. Aerobic training increases renal antioxidant defence and reduces angiotensin II levels, mitigating the high mortality in SHR-STZ model. Arch Physiol Biochem 2024:1-13. [PMID: 39016681 DOI: 10.1080/13813455.2024.2377381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Accepted: 06/26/2024] [Indexed: 07/18/2024]
Abstract
OBJECTVE The purpose of the research was to investigate the effects of aerobic training on renal function, oxidative stress, intrarenal renin-angiotensin system, and mortality of hypertensive and diabetic (SHR-STZ) rats. MATERIALS AND METHODS Blood pressure, creatinine, urea levels, urinary glucose, urine volume, and protein excretion were reduced in trained SHR-STZ rats. RESULTS Aerobic training not only attenuated oxidative stress but also elevated the activity of antioxidant enzymes in the kid'ney of SHR-STZ rats. Training increased intrarenal levels of angiotensin-converting enzymes (ACE and ACE2) as well as the neprilysin (NEP) activity, along with decreased intrarenal angiotensin II (Ang II) levels. Aerobic training significantly improved the survival of STZ-SHR rats. CONCLUSION The protective role of aerobic training was associated with improvements in the renal antioxidative capacity, reduced urinary protein excretion along with reduced intrarenal Ang II and increased NEP activity. These findings might reflect a better survival under the combined pathological conditions, hypertension, and diabetes.
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Affiliation(s)
- Vinicius Guzzoni
- Department of Medicine, School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | | | - Mariane Bertagnolli
- Laboratory of Maternal-child Health, Hospital Sacre-Coeur Research Center, CIUSSS Nord-de-l'Île-de-Montréal, Montreal, Canada
- School of Physical and Occupational Therapy, Faculty of Medicine, McGill University, Montreal, Canada
| | - Roberta Hack Mendes
- School of Agriculture and Food Science, University College Dublin, Dublin, Ireland
| | - Adriane Belló-Klein
- Department of Physiology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Dulce Elena Casarini
- Department of Medicine, School of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Karin Flues
- Laboratory of Experimental Hypertension, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Geórgia Orsi Cândido
- Laboratory of Experimental Hypertension, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Janaína Paulini
- Laboratory of Experimental Hypertension, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Kátia De Angelis
- Department of Physiology, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
- Nove de Julho University (UNINOVE), São Paulo, Brazil
| | - Fernanda Klein Marcondes
- Department of Biosciences, Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas (FOP - UNICAMP), Piracicaba, Brazil
| | - Maria Cláudia Irigoyen
- Laboratory of Experimental Hypertension, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil
| | - Tatiana Sousa Cunha
- Department of Science and Technology, Institute of Science and Technology, Federal University of São Paulo (UNIFESP), São José dos Campos, Brazil
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Fernandes Gregnani M, Budu A, Batista RO, Ornellas FH, Estrela GR, Arruda AC, Freitas Lima LC, Kremer JL, Favaroni Mendes LA, Casarini DE, Lotfi CFP, Oyama LM, Bader M, Araújo RC. Kinin B1 receptor modulates glucose homeostasis and physical exercise capacity by altering adrenal catecholamine synthesis and secretion. Mol Cell Endocrinol 2024; 579:112085. [PMID: 37827227 DOI: 10.1016/j.mce.2023.112085] [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: 05/01/2023] [Revised: 10/03/2023] [Accepted: 10/04/2023] [Indexed: 10/14/2023]
Abstract
Our group has shown in several papers that kinin B1 receptor (B1R) is involved in metabolic adaptations, mediating glucose homeostasis and interfering in leptin and insulin signaling. Since catecholamines are involved with metabolism management, we sought to evaluate B1R role in catecholamine synthesis/secretion. Using B1R global knockout mice, we observed increased basal epinephrine content, accompanied by decreased hepatic glycogen content and increased glucosuria. When these mice were challenged with maximal intensity exercise, they showed decreased epinephrine and norepinephrine response, accompanied by disturbed glycemic responses to effort and poor performance. This phenotype was related to alterations in adrenal catecholamine synthesis: increased basal epinephrine concentration and reduced norepinephrine content in response to exercise, as well decreased gene expression and protein content of tyrosine hydroxylase and decreased gene expression of dopamine beta hydroxylase and kinin B2 receptor. We conclude that the global absence of B1R impairs catecholamine synthesis, interfering with glucose metabolism at rest and during maximal exercise.
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Affiliation(s)
- Marcos Fernandes Gregnani
- Department of Byophisics, Federal University of São Paulo, Brazil; Max-Delbrück Center for Molecular Medicine (MDC), Robert-Rössle-Str. 10, 13125, Berlin, Germany.
| | - Alexandre Budu
- Department of Byophisics, Federal University of São Paulo, Brazil
| | | | | | - Gabriel Rufino Estrela
- Department of Medicine, Discipline of Nephrology, Federal University of Sao Paulo, São Paulo, Brazil; Department of Clinical and Experimental Oncology, Discipline of Hematology and Hematotherapy, Federal University of São Paulo, 04037002, São Paulo, Brazil
| | | | | | - Jean Lucas Kremer
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Dulce Elena Casarini
- Department of Medicine, Discipline of Nephrology, Federal University of Sao Paulo, São Paulo, Brazil
| | | | | | - Michael Bader
- Max-Delbrück Center for Molecular Medicine (MDC), Robert-Rössle-Str. 10, 13125, Berlin, Germany; German Center for Cardiovascular Research (DZHK), Partner Site Berlin, 10117, Berlin, Germany; Max Delbrück Center of Molecular Medicine, Charité University Medicine, Charitéplatz 1, 10117, Berlin, Germany; Institute for Biology, University of Lübeck, Ratzeburger Allee 160, 23562, Lübeck, Germany
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Stress-induced cardiometabolic perturbations, increased oxidative stress and ACE/ACE2 imbalance are improved by endurance training in rats. Life Sci 2022; 305:120758. [DOI: 10.1016/j.lfs.2022.120758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 06/26/2022] [Accepted: 06/27/2022] [Indexed: 11/22/2022]
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Saccharomyces boulardii exerts renoprotection by modulating oxidative stress, renin angiotensin system and uropathogenic microbiota in a murine model of diabetes. Life Sci 2022; 301:120616. [PMID: 35533758 DOI: 10.1016/j.lfs.2022.120616] [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: 12/15/2021] [Revised: 04/30/2022] [Accepted: 05/02/2022] [Indexed: 11/22/2022]
Abstract
AIMS We aimed to investigate whether Saccharomyces boulardii strain might exert renoprotective effects by modulating renal renin angiotensin system, oxidative stress and intestinal microbiota in streptozotocin-diabetic mice. MAIN METHODS Thirty-six C57BL/6 male mice were divided into four groups: control (C), control + probiotic (CP), diabetes (D), diabetes + probiotic (DP). Diabetes was induced by one intraperitoneal injection of streptozotocin and Saccharomyces boulardii was administered by oral gavage for 8 weeks. Blood glucose, albuminuria and urinary volume were measured. Renal levels of angiotensin peptides (angiotensin I, II and 1-7) and the activities of angiotensin-converting enzyme (ACE) and ACE2 were determined, besides that, renal morphology, serotonin and dopamine levels and also microbiota composition were analyzed. KEY FINDINGS Probiotics significantly increased C-peptide secretion and reduced blood glucose of diabetic animals. Saccharomyces boulardii also improved renal antioxidant defense, restored serotonin and dopamine concentration, and activated the renin-angiotensin system (RAS) vasodilator and antifibrotic axis. The modulation of these markers was associated with a beneficial impact on glomerular structure and renal function of diabetic treated animals. The phenotypic changes induced by Saccharomyces boulardii were also related to modulation of intestinal microbiota, evidenced by the decreased abundance of Proteus and Escherichia-Shigella, considered diabetic nephropathy biomarkers. SIGNIFICANCE Therefore, probiotic administration to streptozotocin-induced diabetic mice improves kidney structure and function in a murine model and might represent a reasonable strategy to counteract nephropathy-associated maladaptive responses in diabetes.
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Costa R, Carvalho MSM, Brandão JDP, Moreira RP, Cunha TS, Casarini DE, Marcondes FK. Modulatory action of environmental enrichment on hormonal and behavioral responses induced by chronic stress in rats: Hypothalamic renin-angiotensin system components. Behav Brain Res 2020; 397:112928. [PMID: 32987059 DOI: 10.1016/j.bbr.2020.112928] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 09/10/2020] [Accepted: 09/18/2020] [Indexed: 02/07/2023]
Abstract
Environmental enrichment (EE) has been studied as a protocol that can improve brain plasticity and may protect against negative insults such as chronic stress. The aim of this study was to evaluate the effects of EE on the hormonal and behavioral responses induced by chronic mild unpredictable stress (CMS) in rats, considering the involvement of the renin-angiotensin system. Male adult rats were divided into 4 groups: control, CMS, EE, and CMS + EE, and the experimental protocol lasted for 7 weeks. EE was performed during 7 weeks, 5 days per week, 2 h per day. CMS was applied during weeks 3, 4, and 5. After the CMS (week 6), depression-like behavior was evaluated by forced swimming and sucrose consumption tests, anxiety level was evaluated using the elevated plus-maze test, and memory was evaluated using the Y-maze test. On week 7, the animals were euthanized and basal plasma levels of corticosterone and catecholamines were determined. The hypothalamus was isolated and tissue levels of angiotensin peptides were evaluated. CMS increased plasma corticosterone, norepinephrine, and epinephrine basal concentrations, induced depression-like behaviors, impaired memory, and increased hypothalamic angiotensin I, II, and IV concentrations. EE decreased stress hormones secretion, depression-like behaviors, memory impairment, and hypothalamic angiotensin II induced by stress. Reductions of anxiety-like behavior and norepinephrine secretion were observed in both stressed and unstressed groups. The results indicated that EE seemed to protect adult rats against hormonal and behavioral CMS effects, and that the reduction of angiotensin II could contribute to these effects.
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Affiliation(s)
- Rafaela Costa
- Department of Biosciences, Laboratory of Stress, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Maeline Santos Morais Carvalho
- Department of Biosciences, Laboratory of Stress, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | | | - Roseli Peres Moreira
- Nephrology Division, Department of Medicine, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Tatiana Sousa Cunha
- Science and Technology Institute, Federal University of São Paulo, São José Dos Campos, SP, Brazil
| | - Dulce Elena Casarini
- Nephrology Division, Department of Medicine, Federal University of São Paulo, São Paulo, SP, Brazil
| | - Fernanda Klein Marcondes
- Department of Biosciences, Laboratory of Stress, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil.
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Costa R, Tamascia ML, Sanches A, Moreira RP, Cunha TS, Nogueira MD, Casarini DE, Marcondes FK. Tactile stimulation of adult rats modulates hormonal responses, depression-like behaviors, and memory impairment induced by chronic mild stress: Role of angiotensin II. Behav Brain Res 2020; 379:112250. [DOI: 10.1016/j.bbr.2019.112250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 09/17/2019] [Accepted: 09/17/2019] [Indexed: 12/19/2022]
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Taveira-da-Silva R, da Silva Sampaio L, Vieyra A, Einicker-Lamas M. L-Tyr-Induced Phosphorylation of Tyrosine Hydroxylase at Ser40: An Alternative Route for Dopamine Synthesis and Modulation of Na+/K+-ATPase in Kidney Cells. Kidney Blood Press Res 2019; 44:1-11. [PMID: 30808844 DOI: 10.1159/000497806] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Dopamine (DA) is a natriuretic hormone that inhibits renal sodium reabsorption, being Angiotensin II (Ang II) its powerful counterpart. These two systems work together to maintain sodium homeostasis and consequently, the blood pressure (BP) within normal limits. We hypothesized that L-tyrosine (L-tyr) or L-dihydroxyphenylalanine (L-dopa) could inhibit the Na+/K+-ATPase activity. We also evaluated whether L-tyr treatment modulates Tyrosine Hydroxylase (TH). METHODS Experiments involved cultured LLCPK1 cells treated with L-tyr or L-dopa for 30 minutes a 37°C. In experiments on the effect of Dopa Descarboxylase (DDC) inhibition, cells were pre incubated for 15 minutes with 3-Hydroxybenzylhydrazine dihydrochloride (HBH), and them L-dopa was added for 30 minutes. Na+/K+-ATPase activity was quantified colorimetrically. We used immunoblotting and immunocytochemistry to identify the enzymes TH, DDC and the dopamine receptor D1R in LLCPK1 cells. TH activity was accessed by immunoblotting (increase in the phosphorylation). TH and DDC activities were also evaluated by the modulation of the Na+/K+-ATPase activity, which can be ascribed to the synthesis of dopamine. RESULTS LLCPK1 cells express the required machinery for DA synthesis: the enzymes TH, and (DDC) as well as its receptor D1R, were detected in control steady state cells. Cells treated with L-tyr or L-dopa showed an inhibition of the basolateral Na+/K+-ATPase activity. We can assume that DA formed in the cytoplasm from L-tyr or L-dopa led to inhibition of the Na+/K+-ATPase activity compared to control. L-tyr treatment increases TH phosphorylation at Ser40 by 100%. HBH, a specific DDC inhibitor; BCH, a LAT2 inhibitor; and Sch 23397, a specific D1R antagonist, totally suppressed the inhibition of Na+/K+-ATPase activity due to L-dopa or L-tyr administration, as indicated in the figures. CONCLUSION The results indicate that DA formed mainly from luminal L-tyr or L-dopa uptake by LAT2, can inhibit the Na+/K+-ATPase. In addition, our results showed for the very first time that TH activity is also significantly increased when the cells were exposed to L-tyr.
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Affiliation(s)
| | - Luzia da Silva Sampaio
- Carlos Chagas Filho Biophysics Institute, Rio de Janeiro Federal University, Rio de Janeiro, Brazil
| | - Adalberto Vieyra
- Carlos Chagas Filho Biophysics Institute, Rio de Janeiro Federal University, Rio de Janeiro, Brazil.,National Center for Structural Biology and Bio Imaging (CENABIO), Rio de Janeiro Federal University, Rio de Janeiro, Brazil.,National Institute of Science and Technology for Regenerative Medicine (REGENERA), Rio de Janeiro, Brazil
| | - Marcelo Einicker-Lamas
- Carlos Chagas Filho Biophysics Institute, Rio de Janeiro Federal University, Rio de Janeiro, Brazil,
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Firoozmand LT, Sanches A, Damaceno-Rodrigues NR, Perez JD, Aragão DS, Rosa RM, Marcondes FK, Casarini DE, Caldini EG, Cunha TS. Blockade of AT1 type receptors for angiotensin II prevents cardiac microvascular fibrosis induced by chronic stress in Sprague-Dawley rats. Stress 2018; 21:484-493. [PMID: 29676198 DOI: 10.1080/10253890.2018.1462328] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
To test the effects of chronic-stress on the cardiovascular system, the model of chronic mild unpredictable stress (CMS) has been widely used. The CMS protocol consists of the random, intermittent, and unpredictable exposure of laboratory animals to a variety of stressors, during 3 consecutive weeks. In this study, we tested the hypothesis that exposure to the CMS protocol leads to left ventricle microcirculatory remodeling that can be attenuated by angiotensin II receptor blockade. Male Sprague-Dawley rats were randomly assigned into four groups: Control, Stress, Control + losartan, and Stress + losartan (N = 6, each group, losartan: 20 mg/kg/day). The rats were euthanized 15 days after CMS exposure, and blood samples and left ventricle were collected. Rats submitted to CMS presented increased glycemia, corticosterone, noradrenaline and adrenaline concentration, and losartan reduced the concentration of the circulating amines. Cardiac angiotensin II, measured by high-performance liquid chromatography (HPLC), was significantly increased in the CMS group, and losartan treatment reduced it, while angiotensin 1-7 was significantly higher in the CMS losartan-treated group as compared with CMS. Histological analysis, verified by transmission electron microscopy, showed that rats exposed to CMS presented increased perivascular collagen and losartan effectively prevented the development of this process. Hence, CMS induced a state of microvascular disease, with increased perivascular collagen deposition, that may be the trigger for further development of cardiovascular disease. In this case, CMS fibrosis is associated with increased production of catecholamines and with a disruption of renin-angiotensin system balance, which can be prevented by angiotensin II receptor blockade.
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Affiliation(s)
| | - Andrea Sanches
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (FOP-UNICAMP), Piracicaba, Brazil
| | - Nilsa Regina Damaceno-Rodrigues
- Laboratory of Cell Biology (LIM59), Department of Pathology, School of Medicine, University of São Paulo (USP), São Paulo, Brazil
| | - Juliana Dinéia Perez
- Department of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | | | - Rodolfo Mattar Rosa
- Department of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Fernanda Klein Marcondes
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (FOP-UNICAMP), Piracicaba, Brazil
| | - Dulce Elena Casarini
- Department of Medicine, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Elia Garcia Caldini
- Laboratory of Cell Biology (LIM59), Department of Pathology, School of Medicine, University of São Paulo (USP), São Paulo, Brazil
| | - Tatiana Sousa Cunha
- Institute of Science and Technology, Department of Science and Technology, Federal University of São Paulo (UNIFESP), São José dos Campos, Brazil
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Bastos DB, Sarafim-Silva BAM, Sundefeld MLMM, Ribeiro AA, Brandão JDP, Biasoli ÉR, Miyahara GI, Casarini DE, Bernabé DG. Circulating catecholamines are associated with biobehavioral factors and anxiety symptoms in head and neck cancer patients. PLoS One 2018; 13:e0202515. [PMID: 30125310 PMCID: PMC6101398 DOI: 10.1371/journal.pone.0202515] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 08/03/2018] [Indexed: 02/06/2023] Open
Abstract
Studies have shown that stress-related catecholamines may affect cancer progression. However, little is known about catecholamine secretion profiles in head and neck cancer patients. The present study investigated plasma norepinephrine and epinephrine levels in head and neck squamous cell carcinoma (HNSCC) patients and patients with oral leukoplakia, as well as their association with clinicopathological and biobehavioral variables and anxiety symptoms. A total of 93 patients with HNSCC and 32 patients with oral leukoplakia were included. Plasma norepinephrine and epinephrine levels were measured by high performance liquid chromatography with electrochemical detection (HPLC-ED), and psychological anxiety levels were measured by the Beck Anxiety Inventory (BAI). Plasma norepinephrine and epinephrine concentrations were significantly higher in patients with oral and oropharyngeal squamous cell carcinoma (SCC) compared to non-cancer patients. Oral SCC patients displayed plasma norepinephrine levels about six times higher than oropharyngeal SCC patients, and nine times higher than oral leukoplakia patients (p < .001). Plasma epinephrine levels in oral SCC patients were higher compared to the oropharyngeal SCC (p = .0097) and leukoplakia (p < .0001) patients. Oropharyngeal SCC patients had higher plasma norepinephrine (p = .0382) and epinephrine levels (p = .045) than patients with oral leukoplakia. Multiple regression analyses showed that a history of high alcohol consumption was predictive for reduced plasma norepinephrine levels in the oral SCC group (p < .001). Anxiety symptom of “hand tremor” measured by the BAI was an independent predictor for higher plasma norepinephrine levels in HNSCC patients (β = 157.5, p = .0377), while the “heart pounding/racing” symptom was independently associated with higher plasma epinephrine levels in the oropharyngeal SCC group (β = 15.8, p = .0441). In oral leukoplakia patients, sleep deprivation and worse sleep quality were independent predictors for higher plasma norepinephrine levels, while severe tobacco consumption and higher anxiety levels were factors for higher plasma epinephrine levels. These findings suggest that head and neck cancer patients display sympathetic nervous system hyperactivity, and that changes in circulating catecholamines may be associated with alcohol consumption, as well as withdrawal-related anxiety symptoms.
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Affiliation(s)
- Daniela B. Bastos
- Psychosomatic Research Center and Oral Oncology Center, São Paulo State University (UNESP), School of Dentistry, Araçatuba, SP, Brazil
| | - Bruna A. M. Sarafim-Silva
- Psychosomatic Research Center and Oral Oncology Center, São Paulo State University (UNESP), School of Dentistry, Araçatuba, SP, Brazil
| | - Maria Lúcia M. M. Sundefeld
- Psychosomatic Research Center and Oral Oncology Center, São Paulo State University (UNESP), School of Dentistry, Araçatuba, SP, Brazil
| | - Amanda A. Ribeiro
- Department of Medicine, Nephrology Division, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Juliana D. P. Brandão
- Department of Medicine, Nephrology Division, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Éder R. Biasoli
- Psychosomatic Research Center and Oral Oncology Center, São Paulo State University (UNESP), School of Dentistry, Araçatuba, SP, Brazil
| | - Glauco I. Miyahara
- Psychosomatic Research Center and Oral Oncology Center, São Paulo State University (UNESP), School of Dentistry, Araçatuba, SP, Brazil
| | - Dulce E. Casarini
- Department of Medicine, Nephrology Division, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
| | - Daniel G. Bernabé
- Psychosomatic Research Center and Oral Oncology Center, São Paulo State University (UNESP), School of Dentistry, Araçatuba, SP, Brazil
- * E-mail:
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Nebivolol prevents vascular oxidative stress and hypertension in rats chronically treated with ethanol. Atherosclerosis 2018; 274:67-76. [DOI: 10.1016/j.atherosclerosis.2018.04.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 04/16/2018] [Accepted: 04/27/2018] [Indexed: 01/15/2023]
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Renal sodium handling and blood pressure changes in gestational protein-restricted offspring: Role of renal nerves and ganglia neurokinin expression. PLoS One 2017. [PMID: 28632750 PMCID: PMC5478103 DOI: 10.1371/journal.pone.0179499] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Considering long-term changes in renal sodium handling and blood pressure in maternal protein-restricted (LP) offspring, we assumed that the development of LP hypertension results from abnormal dorsal root ganglia (DRG) neurokinin expression associated with impaired responsiveness of renal sensory receptors, promoting a reduced urinary excretion of sodium. The present study investigates whether increased blood pressure in protein-restricted offspring would be associated with changes in the DRG cells and in renal pelvic wall expression of NK1R, SP and CGRP when compared to NP offspring. In addition, we assessed the tubular sodium handling, estimated by creatinine and lithium clearances before and after bilateral renal denervation in conscious LP offspring relative to age-matched NP counterparts. Methods Dams received a normal (NP) or low-protein diet (LP) during their entire pregnancy period. Male NP or LP offspring underwent bilateral surgical renal denervation before the 8-week renal functional test and blood pressure measurements. Immunofluorescence staining in DRG cells was assessed in optical sections by confocal laser scanning microscope. Results The current data demonstrated a sustained rise in blood pressure associated with a decrease in fractional excretion of sodium (FENa) by reducing post-proximal tubule sodium rejection in 16-wk old LP rats relative to age-matched NP counterparts. According to this study, bilateral renal denervation attenuated blood pressure and increased FENa in LP offspring. Furthermore, an immunohistochemical analysis showed a reduced expression of SP and CGRP in DRGs of LP when compared with NP rats. Renal pelvis of LP rats did not show a strong CGRP expression related to NP rats, whereas there was no change in SP immunostaining. Conclusions These observations raise the possibility that impaired DRG and pelvic neurokinin expression associated with responsiveness of renal sensory receptors in 16-wk old LP offspring are conducive to excess renal reabsorption of sodium and development of hypertension in this programmed model.
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Zhu C, Zhang A, Huang S, Ding G, Pan X, Chen R. Interleukin-13 inhibits cytokines synthesis by blocking nuclear factor-κB and c-Jun N-terminal kinase in human mesangial cells. J Biomed Res 2013; 24:308-16. [PMID: 23554645 PMCID: PMC3596597 DOI: 10.1016/s1674-8301(10)60043-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Indexed: 01/09/2023] Open
Abstract
Objective Monocytes/macrophages, proinflammatory cytokines and chemokines are important in the pathogenesis of glomerulonephritis. Interleukin (IL) -13 has been shown to exert potent anti-inflammatory properties. This study was designed to investigate the effect of IL-13 on the expression of proinflammatory cytokines, chemokines and profibrogenic cytokines and the involved molecular mechanism in cultured human mesangial cells (HMCs). Methods The expressions of proinflammatory cytokines, chemokines and profibrogenic cytokines were determined by ribonuclease protection assay (RPA). Activity of nuclear factor-kappa B (NF-κB) and activator protein-1 (AP-1) was examined by electrophoretic mobility shift assay (EMSA). NF-κB subunit p65 nuclear transportation and c-Jun N-terminal kinase (JNK) activity were assayed by immunoblot. Results Recombinant IL-13 inhibited tumor necrosis factor-α (TNF-α), IL-1α, IL-1β, monocyte chemoattractant protein-1 (MCP-1), IL-8, and transforming growth factor-β1 (TGF-β1) mRNA expressions in a dose-dependent manner. Lipopolysacchorides (LPS) dramatically increased NF-κB DNA binding activity of HMCs, which was inhibited by IL-13 in a dose-dependent manner. LPS-activated NF-κB contained p50 and p65 dimers, but not c-Rel subunit. IL-13 blocked LPS-induced NF-κB subunit p65. LPS stimulated JNK/AP-1 activation, which was inhibited by IL-13 in a dose-dependent manner. Conclusion IL-13 inhibits proinflammatory cytokines, chemokines, and profibrogenic cytokines synthesis by blocking NF-κB and JNK/AP-1 activation. These observations point to the importance of IL-13 in the modulation of inflammatory processes in the renal glomerulus.
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Affiliation(s)
- Chunhua Zhu
- Nanjing Children's Hospital Affiliated to Nanjing Medical University, Nanjing 210008, Jiangsu Province, China ; Institute of Pediatrics, Nanjing Medical University, Nanjing 210029, Jiangsu Province, China
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Fung MM, Rana BK, Tang CM, Shiina T, Nievergelt CM, Rao F, Salem RM, Waalen J, Ziegler MG, Insel PA, O'Connor DT. Dopamine D1 receptor (DRD1) genetic polymorphism: pleiotropic effects on heritable renal traits. Kidney Int 2009; 76:1070-80. [PMID: 19675531 DOI: 10.1038/ki.2009.306] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Because dopamine D(1) receptors (DRD1) influence renal sodium transport and vascular hemodynamics, we examined whether genetic polymorphisms play a role in renal function. We conducted polymorphism discovery across the DRD1 open reading frame and its 5'-UTR and then performed association studies with estimated glomerular filtration rate (eGFR), plasma creatinine (pCr), and fractional excretion of uric acid (FeUA). We used a twin/family group of 428 subjects from 195 families and a replication cohort of 677 patients from the Kaiser health-care organization sampled from the lower percentiles of diastolic blood pressures. Although the coding region lacked common non-synonymous variants, we identified two polymorphisms in the DRD1 5'-UTR (G-94A, A-48G) that occurred with frequencies of 15 and 30%, respectively. In the twin/family study, renal traits were highly heritable, such that DRD1 G-94A significantly associated with eGFR, pCr, and FeUA. Homozygotes for the G-94A minor allele (A/A) exhibited lower eGFR, higher pCr, and lower FeUA. No effects were noted for DRD1 A-48G. Patients in the Kaiser group had similar effects of G-94A on eGFR and pCr. Kidney cells transfected with the -94A variant but not the wild type vectors had increased receptor density. Because the -94A allele is common and may reduce glomerular capillary hydrostatic pressure, G-94A profiling may aid in predicting survival of renal function in patients with progressive renal disease.
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Affiliation(s)
- Maple M Fung
- Department of Medicine, Veterans Affairs San Diego Healthcare System and University of California at San Diego, La Jolla, California 92093-0838, USA
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Delivery of sry1, but not sry2, to the kidney increases blood pressure and sns indices in normotensive wky rats. BMC PHYSIOLOGY 2009; 9:10. [PMID: 19500370 PMCID: PMC2699329 DOI: 10.1186/1472-6793-9-10] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Accepted: 06/05/2009] [Indexed: 11/10/2022]
Abstract
BACKGROUND Our laboratory has shown that a locus on the SHR Y chromosome increases blood pressure (BP) in the SHR rat and in WKY rats with the SHR Y chromosome (SHR/y rat). A candidate for this Y chromosome hypertension locus is Sry, a gene that encodes a transcription factor responsible for testes determination. The SHR Y chromosome has six divergent Sry loci. The following study examined if exogenous Sry1 or Sry2 delivered to the kidney would elevate renal tyrosine hydroxylase, renal catecholamines, plasma catecholamines and telemetered BP over a 28 day period. We delivered 50 mug of either the expression construct Sry1/pcDNA 3.1, Sry2/pcDNA 3.1, or control vector into the medulla of the left kidney of normotensive WKY rats by electroporation. Weekly air stress was performed to determine BP responsiveness. Separate groups of animals were tested for renal function and plasma hormone patterns and pharmacological intervention using alpha adrenergic receptor blockade. Pre-surgery baseline and weekly blood samples were taken from Sry1 electroporated and control vector males for plasma renin, aldosterone, and corticosterone. BP was measured by telemetry and tyrosine hydroxylase and catecholamines by HPLC with electrochemical detection. RESULTS In the animals receiving the Sry1 plasmid there were significant increases after 21 days in resting plasma norepinephrine (NE, 27%) and renal tyrosine hydroxylase content (41%, p < .05) compared to controls. BP was higher in animals electroporated with Sry1 (143 mmHg, p < .05) compared to controls (125 mmHg) between 2-4 weeks. Also the pressor response to air stress was significantly elevated in males electroporated with Sry1 (41 mmHg) compared to controls (28 mmHg, p < .001). Sry2 did not elevate BP or SNS indices and further tests were not done. The hormone profiles for plasma renin, aldosterone, and corticosterone between electroporated Sry1 and control vector males showed no significant differences over the 28 day period. Alpha adrenergic receptor blockade prevented the air stress pressor response in both strains. Urinary dopamine significantly increased after 7 days post Sry electroporation. CONCLUSION These results are consistent with a role for Sry1 in increasing BP by directly or indirectly activating renal sympathetic nervous system activity.
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Lutaif NA, Rocha EM, Veloso LA, Bento LM, Gontijo JAR. Renal contribution to thermolability in rats: role of renal nerves. Nephrol Dial Transplant 2008; 23:3798-805. [PMID: 18593740 DOI: 10.1093/ndt/gfn368] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Body temperature is closely regulated via the integration of a number of mechanisms, the study of which has been greatly assisted by the exploitation of comparative physiology. Previous studies have demonstrated that chronic renal failure patients have significantly lower body temperatures than healthy subjects when artifacts from circadian changes were taken into consideration. We hypothesize that the blunting of renal sensory neurons after kidney partial ablation may contribute to the lack of suppression of sympathetic efferent outflow towards BAT, modifying the glucose metabolism signaling pathway, UCP 1 expression and liver mitocondrial respiratory chain activity. METHODS To evaluate the influence of renal mass reduction, renal denervation and chronic deafferentation by capsaicin on thermoregulation, glucose metabolism, UCP1 expression and liver mitocondrial respiration, was used respectively, the blocking of heat dissipation by thermoneutral body water immersion, the oxygen consumption by Clark-type electrode, and western blot method. RESULTS The study confirmed that, following 5/6 nephrectomy, the basal core temperature of rats was significantly lower than that of control animals when maintained in a thermoneutral body water immersion recipient, as compared to controls. Additionally, we demonstrated that exposure of bilateral renal denervated or of renal chronic capsaicin-treated rats to a similar experimental protocol results in a fast and high rise in rectal temperature response, and this is associated with a significant increase in the basal serine phosphorylation and protein levels of Akt and protein levels of UCP1. This was observed despite unchanged liver mitochondria respiratory control and ADP/O ratios in 5/6 Nx, as well as DNx, when compared to control mitochondria. CONCLUSIONS Speculatively, it may be suggested that one of the renal sensory nerve signal defects associated with decreased kidney energy generation, induced by kidney ablation, may result in an inability to control the body temperature.
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Affiliation(s)
- Nelson A Lutaif
- Departamento de Clínica Médica, Laboratório de Metabolismo Hidro-Salino, Núcleo de Medicina e Cirurgia Experimental, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, 13083-592 Campinas, SP, Brazil
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Janssens K, Boussemaere M, Wagner S, Kopka K, Denef C. Beta1-adrenoceptors in rat anterior pituitary may be constitutively active. Inverse agonism of CGP 20712A on basal 3',5'-cyclic adenosine 5'-monophosphate levels. Endocrinology 2008; 149:2391-402. [PMID: 18202135 DOI: 10.1210/en.2007-1397] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Catecholamines directly stimulate GH, ACTH, and prolactin secretion from rat anterior pituitary through the beta(2)-adrenoceptor (AR). We recently showed that gonadotrophs express the beta(1)-AR and that glucocorticoids drastically increase its mRNA expression level. The present investigation explores whether beta(1)-ARs are functionally coupled to adenylate cyclase. In anterior pituitary cell aggregates, the highly selective beta(1)-AR antagonists CGP 20712A and ICI 89,406-8a attenuated isoproterenol-stimulated cAMP accumulation, but no agonist action of norepinephrine could be detected. Remarkably, CGP 20712A inhibited basal cAMP levels by its own for at least 50%, an action that tended to be more effective in dexamethasone-supplemented medium. The latter effect was abolished by the beta-AR antagonist carvedilol, but not by other beta-AR antagonists. Pretreatment with pertussis toxin abolished the action of CGP 20712A on basal cAMP. CGP 20712A also attenuated isoproterenol-induced cAMP accumulation in the gonadotroph cell lines alphaT3-1 and LbetaT2, but not in the somatotroph precursor cell line GHFT and the folliculo-stellate cell line TtT/GF. However, in LbetaT2 cells CGP 20712A did not inhibit basal cAMP levels by its own. The present data suggest that beta(1)-AR in the anterior pituitary is positively coupled to adenylyl cyclase but is constitutively active in a pertussis toxin-sensitive manner. CGP 20712A may act as an inverse agonist with approximately 50% negative intrinsic activity, suggesting that the beta(1)-AR significantly contributes to basal adenylate cyclase activity in the pituitary.
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Affiliation(s)
- Kristel Janssens
- Laboratory of Cell Pharmacology, University of Leuven, Medical School, Campus Gasthuisberg (O & N), B-3000 Leuven, Belgium
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Marco GSD, Colucci JA, Fernandes FB, Vio CP, Schor N, Casarini DE. Diabetes induces changes of catecholamines in primary mesangial cells. Int J Biochem Cell Biol 2007; 40:747-54. [PMID: 18037336 DOI: 10.1016/j.biocel.2007.10.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2007] [Revised: 10/08/2007] [Accepted: 10/10/2007] [Indexed: 01/11/2023]
Abstract
Diabetes mellitus is a frequent cause of kidney function damage with diabetic nephropathy being predominantly related to glomerular dysfunction. Diabetes is capable of interfering with distinct hormonal systems, as well as catecholamine metabolism. Since mesangial cells, the major constituent of renal glomerulus, constitute a potential site for catecholamine production, the present study was carried out to investigate alterations in catecholamine metabolism in cultured mesangial cells from the nonobese diabetic mouse, a well-established model for type I diabetes. We evaluated mesangial cells from normoglycemic and hyperglycemic nonobese diabetic mice, as well as cells from normoglycemic Swiss mice as control. Mesangial cells from normoglycemic mice presented similar profiles concerning all determinations. However, cells isolated from hyperglycemic animals presented increased dopamine and norepinephrine production/secretion. Among the studied mechanisms, we observed an upregulation of tyrosine hydroxylase expression accompanied by increased tetrahydrobiopterin consumption, the tyrosine hydroxylase enzymatic cofactor. However, this increase in synthetic pathways was followed by decreased monoamine oxidase activity, which corresponds to the major metabolic pathway of catecholamines in mesangial cells. In addition, whole kidney homogenates from diabetic animals also presented increased dopamine and norepinephrine levels when compared to normoglycemic animals. Thus, our results suggest that diabetes alters catecholamine production by interfering with both synthesizing and degrading enzymes, suggesting a possible role of catecholamine in the pathogenesis of acute and chronic renal complications of diabetes mellitus.
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Di Marco GS, Vio CP, Dos Santos OFPAO, Schor N, Casarini DE. Catecholamine production along the nephron. Cell Physiol Biochem 2007; 20:919-24. [PMID: 17982274 DOI: 10.1159/000110452] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2007] [Indexed: 11/19/2022] Open
Abstract
The present work proposes an extra neural site of catecholamine production along the nephron. LLC-PK(1), MDCK, and mIMCD-3 (proximal and distal tubules and inner medullary collecting duct, respectively) presented the following amine concentrations in the cell homogenates: Norepinephrine = 275+/-34, 56+/-16 and 255+/-21; Epinephrine = 161+/-20, 83+/-17 and 53+/-7; and Dopamine = 63+/-15, 39+/-6 and 36+/-7 pg/mg cell protein (Means +/- SEM), respectively. The culture medium showed Norepinephrine = 168+/-25, 22+/-3 and 135+/-8; Epinephrine = 32+/-6, 152+/-17 and 39+/-5; and Dopamine = 27+/-9, 241+/-34 and 26+/-5 pg/mg cell protein, respectively. The synthesis enzymes as tyrosine hydroxylase, dopa decarboxylase and dopamine beta-hydroxylase were detected by Western blotting. Biopterin, the enzymatic cofactor of tyrosine hydroxylase, was quantified in the intracellular and medium of mIMCD-3 cells (17+/-4 and 24+/-3 nmol/mg cell protein, respectively) and in the medium of MDCK cells (19+/-4 nmol/mg cell protein). The data confirmed that the proximal tubule is an important source of dopa decarboxilase and Dopamine and epithelial cell along the nephron express the biochemical pathway for catecholamine production.
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Affiliation(s)
- Giovana Seno Di Marco
- Department of Medicine - Nephrology Division, Federal University of São Paulo/ Escola Paulista de Medicina, São Paulo, Brasil
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Smith JL, Patil PB, Minteer SD, Lipsitz JR, Fisher JS. Possibility of autocrine beta-adrenergic signaling in C2C12 myotubes. Exp Biol Med (Maywood) 2006; 230:845-52. [PMID: 16339749 PMCID: PMC1406256 DOI: 10.1177/153537020523001109] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Levodopa reportedly inhibits insulin action in skeletal muscle. Here we show that C2C12 myotubes produce levodopa and that insulin-stimulated glucose transport is enhanced when endogenous levodopa is depleted. Exogenous levodopa prevented the stimulation of glucose transport by insulin (P < 0.05) and increased cAMP concentrations (P < 0.05). The decrease in insulin-stimulated glucose transport caused by levodopa was attenuated by propranolol (a beta-adrenergic antagonist) and prevented by NSD-1015 (NSD), an inhibitor of DOPA decarboxylase (DDC; converts levodopa to dopamine). Propranolol and NSD both prevented levodopa-related increases in [cAMP]. However, the effects of levodopa were unlikely to be dependent on the conversion of levodopa to catecholamines because we could detect neither DDC in myotubes nor catecholamines in media after incubation of myotubes with levodopa. The data suggest the possibility of novel autocrine beta-adrenergic action in C2C12 myotubes in which levodopa, produced by myotubes, could have hormone-like effects that impinge on glucose metabolism.
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Affiliation(s)
- Jill L Smith
- Department of Biology, Saint Louis University, St. Louis, MO 63103, USA
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