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Nunes Torres JA, de Lima DCA, Moraes VGDS, de Oliveira Cardoso MV, de Araújo Ribeiro LA, Silva FS, de Queiroz DB. Maternal exposure to glyphosate-based herbicide causes vascular dysfunction in offspring female rats. Toxicol Appl Pharmacol 2024; 484:116873. [PMID: 38417591 DOI: 10.1016/j.taap.2024.116873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 02/02/2024] [Accepted: 02/24/2024] [Indexed: 03/01/2024]
Abstract
This study analyzed how glyphosate exposure in the gestational period affects vascular function in their female offspring and whether oxidative stress is involved in this effect. To this, pregnant Wistar rats were exposed through drinking water to 0.2% of a glyphosate commercial formulation, and we analyzed the response to acetylcholine and phenylephrine in the aorta from offspring of Glyphosate-based herbicide (O-GBH) and controls (O-CON) rats at six months of age. Relaxation to acetylcholine was reduced in O-GBH than in O-CON. Acute Indomethacin and Apocynin increased relaxation to acetylcholine in O-GBH. The aorta from O-GBH was hyperactive to phenylephrine; the preincubation with N-nitro-L-arginine methyl ester (L-NAME) increased contraction to phenylephrine more in O-CON than O-GBH. TEMPOL similarly reduced phenylephrine response, and L-NAME prevented this effect. The TBARS and GSH levels were increased in O-GBH than in O-CON. Results reinforce the concept that oxidative stress during the perinatal period contributes to the development of vascular changes in adulthood. Results also reveal that oxidative stress parameters altered, and the current levels considered safe for exposure to Glyphosate deserve further investigation, especially in the female gender.
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2
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Alluri K, Srinivas B, Belmadani S, Matrougui K. Plasmacytoid dendritic cells contribute to vascular endothelial dysfunction in type 2 diabetes. Front Cardiovasc Med 2023; 10:1222243. [PMID: 38094119 PMCID: PMC10716216 DOI: 10.3389/fcvm.2023.1222243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 11/09/2023] [Indexed: 02/01/2024] Open
Abstract
Objective Type 2 diabetes (T2D) is associated with an increased risk of cardiovascular disease due to macro- and microvascular dysfunction. This study aimed to investigate the potential involvement of plasmacytoid dendritic cells (pDCs) in T2D-related vascular dysfunction. Approach and results pDCs were isolated from db/db and control mice. It was found that pDCs from db/db mice impaired endothelial cell eNOS phosphorylation in response to ATP and decreased vascular endothelium-dependent relaxation compared to pDCs from control mice. Moreover, isolated CD4+ cells from control mice, when stimulated overnight with high glucose and lipids, and isolated pDCs from db/db mice, display elevated levels of ER stress, inflammation, and apoptosis markers. Flow cytometry revealed that pDC frequency was higher in db/db mice than in controls. In vivo, the reduction of pDCs using anti-PDCA-1 antibodies in male and female db/db mice for 4 weeks significantly improved vascular endothelial function and eNOS phosphorylation. Conclusion pDCs may contribute to vascular dysfunction in T2D by impairing endothelial cell function. Targeting pDCs with anti-PDCA-1 antibodies may represent a promising therapeutic strategy for improving vascular endothelial function in T2D patients. This study provides new insights into the pathogenesis of T2D-related vascular dysfunction and highlights the potential of immunomodulatory therapies for treating this complication. Further studies are warranted to explore the clinical potential of this approach.
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Affiliation(s)
| | | | | | - K. Matrougui
- Department of Physiological Sciences, EVMS, Norfolk, VA, United States
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3
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Taguchi K, Okudaira K, Matsumoto T, Kobayashi T. Ginkgolide B caused the activation of the Akt/eNOS pathway through the antioxidant effect of SOD1 in the diabetic aorta. Pflugers Arch 2023; 475:453-463. [PMID: 36715760 DOI: 10.1007/s00424-023-02790-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 01/06/2023] [Accepted: 01/18/2023] [Indexed: 01/31/2023]
Abstract
Ginkgo biloba extract (GBE) helps lower cardiovascular disease risk. Diabetes mellitus (DM)-induced endothelial dysfunction is a critical and initiating factor in the beginning of diabetic vascular complications. It was reported that GBE causes an endothelial-dependent relaxation. This study was designed to figure out the molecular basis on which GBE protects from endothelial dysfunction in diabetes because the underlying mechanisms are unclear. Studies were performed in a normal control group and streptozotocin/nicotinamide-induced DM group. In aortas, notably diabetic aortas, GBE, and ginkgolide B (GB), a constituent of GBE, produced a dose-dependent relaxation. The relaxation by GB was abolished by prior incubation with L-NNA (an endothelial nitric oxide synthase (NOS) inhibitor), LY294002 (a phosphoinositide 3-kinase (PI3K) inhibitor), and Akt inhibitor, confirming the essential role of PI3K/Akt/eNOS signaling pathway. We also demonstrated that GB induced the phosphorylation of Akt and eNOS in aortas. The superoxide dismutase1 (SOD1) expression level decreased in DM aortas, but GB stimulation increased SOD activity and SOD1 expression in DM aortas. Our novel findings suggest that in DM aortas, endothelial-dependent relaxation induced by GB was mediated by activation of SOD1, resulting in activation of the Akt/eNOS signaling pathway.
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Affiliation(s)
- Kumiko Taguchi
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Kanami Okudaira
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Takayuki Matsumoto
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa-Ku, Tokyo, 142-8501, Japan
| | - Tsuneo Kobayashi
- Department of Physiology and Morphology, Institute of Medicinal Chemistry, Hoshi University, 2-4-41 Ebara, Shinagawa-Ku, Tokyo, 142-8501, Japan.
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4
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Dardi P, dos Reis Costa D, Assunção H, Rossoni L. Venous endothelial function in cardiovascular disease. Biosci Rep 2022; 42:BSR20220285. [PMID: 36281946 PMCID: PMC9685499 DOI: 10.1042/bsr20220285] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 10/20/2022] [Accepted: 10/24/2022] [Indexed: 09/29/2023] Open
Abstract
The essential role of the endothelium in vascular homeostasis is associated with the release of endothelium-dependent relaxing and contractile factors (EDRF and EDCF, respectively). Different from arteries, where these factors are widely studied, the vasoactive factors derived from the venous endothelium have been given less attention. There is evidence for a role of the nitric oxide (NO), endothelium-dependent hyperpolarization (EDH) mechanism, and cyclooxygenase (COX)-derived metabolites as EDRFs; while the EDCFs need to be better evaluated since no consensus has been reached about their identity in venous vessels. The imbalance between the synthesis, bioavailability, and/or action of EDRFs and/or EDCFs results in a pathological process known as endothelial dysfunction, which leads to reduced vasodilation and/or increased vasoconstriction. In the venous system, endothelial dysfunction is relevant since reduced venodilation may increase venous tone and decrease venous compliance, thus enhancing mean circulatory filling pressure, which maintains or modify cardiac workload contributing to the etiology of cardiovascular diseases. Interestingly, some alterations in venous function appear at the early stages (or even before) the establishment of these diseases. However, if the venous endothelium dysfunction is involved in these alterations is not yet fully understood and requires further studies. In this sense, the present study aims to review the current knowledge on venous endothelial function and dysfunction, and the general state of the venous tone in two important cardiovascular diseases of high incidence and morbimortality worldwide: hypertension and heart failure.
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Affiliation(s)
- Patrizia Dardi
- Laboratory of Vascular Physiology, Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | | | - Henrique Charlanti Reis Assunção
- Laboratory of Vascular Physiology, Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, Brazil
| | - Luciana Venturini Rossoni
- Laboratory of Vascular Physiology, Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, Brazil
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5
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Levels of Angiotensin-Converting Enzyme and Apolipoproteins Are Associated with Alzheimer’s Disease and Cardiovascular Diseases. Cells 2021; 11:cells11010029. [PMID: 35011591 PMCID: PMC8744784 DOI: 10.3390/cells11010029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/10/2021] [Accepted: 12/17/2021] [Indexed: 01/01/2023] Open
Abstract
Angiotensin-converting enzyme-1 (ACE1) and apolipoproteins (APOs) may play important roles in the development of Alzheimer’s disease (AD) and cardiovascular diseases (CVDs). This study aimed to examine the associations of AD, CVD, and endocrine-metabolic diseases (EMDs) with the levels of ACE1 and 9 APO proteins (ApoAI, ApoAII, ApoAIV, ApoB, ApoCI, ApoCIII, ApoD, ApoE, and ApoH). Non-Hispanic white individuals including 109 patients with AD, 356 mild cognitive impairment (MCI), 373 CVD, 198 EMD and controls were selected from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) dataset. Multivariable general linear model (GLM) was used to examine the associations. ApoE ε4 allele was associated with AD, as well as ApoAIV, ApoB and ApoE proteins, but not associated with CVD and EMD. Both AD and CVD were associated with levels of ACE1, ApoB, and ApoH proteins. AD, MCI and EMD were associated with levels of ACE1, ApoAII, and ApoE proteins. This is the first study to report associations of ACE1 and several APO proteins with AD, MCI, CVD and EMD, respectively, including upregulated and downregulated protein levels. In conclusion, as specific or shared biomarkers, the levels of ACE1 and APO proteins are implicated for AD, CVD, EMD and ApoE ε4 allele. Further studies are required for validation to establish reliable biomarkers for these health conditions.
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6
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Dardi P, Perazza LR, Couto GK, Campos GP, Capettini LDSA, Rossoni LV. Vena cava presents endothelial dysfunction prior to thoracic aorta in heart failure: the pivotal role of nNOS uncoupling/oxidative stress. Clin Sci (Lond) 2021; 135:2625-2641. [PMID: 34783347 DOI: 10.1042/cs20210810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 11/05/2021] [Accepted: 11/15/2021] [Indexed: 11/17/2022]
Abstract
Arterial endothelial dysfunction has been extensively studied in heart failure (HF). However, little is known about the adjustments shown by the venous system in this condition. Considering that inferior vena cava (VC) tone could influence cardiac performance and HF prognosis, the aim of the present study was to assess the VC and thoracic aorta (TA) endothelial function of HF-post-myocardial infarction (MI) rats, comparing both endothelial responses and signaling pathways developed. Vascular reactivity of TA and VC from HF post-MI and sham operated (SO) rats was assessed with a wire myograph, 4 weeks after coronary artery occlusion surgery. Nitric oxide (NO), H2O2 production and oxidative stress were evaluated in situ with fluorescent probes, while protein expression and dimer/monomer ratio was assessed by Western blot. VC from HF rats presented endothelial dysfunction, while TA exhibited higher acetylcholine (ACh)-induced vasodilation when compared with vessels from SO rats. TA exhibited increased ACh-induced NO production due to a higher coupling of endothelial and neuronal NO synthases isoforms (eNOS, nNOS), and enhanced expression of antioxidant enzymes. These adjustments, however, were absent in VC of HF post-MI rats, which exhibited uncoupled nNOS, oxidative stress and higher H2O2 bioavailability. Altogether, the present study suggests a differential regulation of endothelial function between VC and TA of HF post-MI rats, most likely due to nNOS uncoupling and compromised antioxidant defense.
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Affiliation(s)
- Patrizia Dardi
- Department of Physiology and Biophysics, Institute of Biomedical Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Laís Rossi Perazza
- Department of Physiology and Biophysics, Institute of Biomedical Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Gisele Kruger Couto
- Department of Physiology and Biophysics, Institute of Biomedical Science, University of Sao Paulo, Sao Paulo, Brazil
| | - Gianne Paul Campos
- Department of Pharmacology, Institute of Biological Science, University of Minas Gerais, Minas Gerais, Brazil
| | | | - Luciana Venturini Rossoni
- Department of Physiology and Biophysics, Institute of Biomedical Science, University of Sao Paulo, Sao Paulo, Brazil
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7
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Chen YJ, Chen C, Li MY, Li QQ, Zhang XJ, Huang R, Zhu XW, Bai CY, Zhang LY, Peng PH, Yang WM. Scutellarin Reduces Cerebral Ischemia Reperfusion Injury Involving in Vascular Endothelium Protection and PKG Signal. NATURAL PRODUCTS AND BIOPROSPECTING 2021; 11:659-670. [PMID: 34750765 PMCID: PMC8599605 DOI: 10.1007/s13659-021-00322-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 10/29/2021] [Indexed: 05/08/2023]
Abstract
Flavonoid glycoside scutellarin (SCU) has been widely applied in the treatment of cerebral ischemic diseases in China. In this article, we conducted research on the working mechanisms of SCU in hypoxia reoxygenation (HR) injury of isolated cerebral basilar artery (BA) and erebral ischemia reperfusion (CIR) injury in rat models. In isolated rat BA rings, HR causes endothelial dysfunction (ED) and acetylcholine (ACh) induces endothelium-dependent vasodilation. The myography result showed that SCU (100 µM) was able to significantly improve the endothelium-dependent vasodilation induced by Ach. However, SCU did not affect the ACh-induced relaxation in normal BA. Further studies suggested that SCU (10-1000 µM) dose-dependently induced relaxation in isolated BA rings which were significantly blocked by the cGMP dependent protein kinase (PKG) inhibitor Rp-8-Br-cGMPs (PKGI-rp, 4 µM). Pre-incubation with SCU (500 µM) reversed the impairment of endothelium-dependent vasodilation induced by HR, but the reversing effect was blocked if PKGI-rp (4 µM) was added. The brain slice staining test in rats' model of middle cerebral artery occlusion (MCAO) induced CIR proved that the administration of SCU (45, 90 mg/kg, iv) significantly reduced the area of cerebral infarction. The Western blot assay result showed that SCU (45 mg/kg, iv) increased brain PKG activity and PKG protein level after CIR surgery. In conclusion, our findings suggested that SCU possesses the ability of protecting brain cells against CIR injury through vascular endothelium protection and PKG signal.
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Affiliation(s)
- Ya-Juan Chen
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China
| | - Chen Chen
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China
| | - Meng-Yuan Li
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China
| | - Qing-Qing Li
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China
| | - Xiu-Juan Zhang
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China
| | - Rong Huang
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China
| | - Xing-Wei Zhu
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China
| | - Chun-Yun Bai
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China
| | - Liu-Yi Zhang
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China.
| | - Pei-Hua Peng
- Department of Anesthesiology, The First Affiliated Hospital of Kunming University, Kunming, 650032, China.
| | - Wei-Min Yang
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, 1168 Western Chunrong Road, Yuhua Street, Chenggong New City, Kunming, 650500, China.
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8
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Sági B, Késői I, Vas T, Csiky B, Nagy J, Kovács T. The prognostic role of heart rate recovery after exercise and metabolic syndrome in IgA nephropathy. BMC Nephrol 2021; 22:390. [PMID: 34809611 PMCID: PMC8609750 DOI: 10.1186/s12882-021-02596-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 10/26/2021] [Indexed: 11/12/2022] Open
Abstract
Background Cardiovascular (CV) morbidity and mortality are higher in chronic kidney disease (CKD) than in the general population. Reduced heart rate recovery (HRR) is an independent risk factor for CV disease. The aim of the study was to determine the prognostic role of HRR in a homogenous group of CKD patients. Methods One hundred and twenty-five IgA nephropathy patients (82 male, 43 female, age 54.7 ± 13 years) with CKD stage 1–4 were investigated and followed for average 70 months. We performed a graded exercise treadmill stress test. HRR was derived from the difference of the peak heart rate and the heart rate at 1 min after exercise. Patients were divided into two groups by the mean HRR value (22.9 beats/min). The composite (CV and renal) endpoints included all-cause mortality and any CV event such as stroke, myocardial infarction, revascularisation (CV) and end-stage renal disease, renal replacement therapy (renal). Results Patients with reduced HRR (< 23 bpm) had significantly more end point events (22/62 patients vs. 9/53 patients, p = 0.013) compared to the higher HRR (≥23 bpm). Of the secondary the endpoints (CV or renal separately) rate of the renal endpoint was significantly higher in the lower HRR group (p = 0.029), while there was no significant difference in the CV endpoint between the two HRR groups (p = 0.285). Independent predictors of survival were eGFR and diabetes mellitus by using Cox regression analysis. Kaplan-Meier curves showed significant differences in metabolic syndrome and non-metabolic syndrome when examined at the combined endpoints (cardiovascular and renal) or at each endpoint separately. The primary endpoint rate was increased significantly with the increased number of metabolic syndrome component (Met.sy. comp. 0 vs. Met. sy. comp. 2+, primary endpoints, p = 0.012). Conclusion Our results showed that reduced HRR measured by treadmill exercise test has a predictive value for the prognosis of IgA nephropathy. The presence of metabolic syndrome may worsen the prognosis of IgA nephropathy.
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Affiliation(s)
- Balázs Sági
- 2nd Department of Internal Medicine and Nephrology, Diabetology Center, University of Pécs, Clinical Center Medical School, Pacsirta street 1, Pécs, 7624, Hungary.,Fresenius Medical Care Dialysis Center Pécs, Pécs, Hungary
| | - István Késői
- Internal Medicine Department, Health Center of Komló, Mining rehabilitation and Nighttime Sanatorium, Komló, Hungary
| | - Tibor Vas
- 2nd Department of Internal Medicine and Nephrology, Diabetology Center, University of Pécs, Clinical Center Medical School, Pacsirta street 1, Pécs, 7624, Hungary
| | - Botond Csiky
- 2nd Department of Internal Medicine and Nephrology, Diabetology Center, University of Pécs, Clinical Center Medical School, Pacsirta street 1, Pécs, 7624, Hungary.,Fresenius Medical Care Dialysis Center Pécs, Pécs, Hungary
| | - Judit Nagy
- 2nd Department of Internal Medicine and Nephrology, Diabetology Center, University of Pécs, Clinical Center Medical School, Pacsirta street 1, Pécs, 7624, Hungary.
| | - Tibor Kovács
- 2nd Department of Internal Medicine and Nephrology, Diabetology Center, University of Pécs, Clinical Center Medical School, Pacsirta street 1, Pécs, 7624, Hungary
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9
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Jing H, Xie R, Bai Y, Duan Y, Sun C, Wang Y, Cao R, Ling Z, Qu X. The Mechanism Actions of Astragaloside IV Prevents the Progression of Hypertensive Heart Disease Based on Network Pharmacology and Experimental Pharmacology. Front Pharmacol 2021; 12:755653. [PMID: 34803698 PMCID: PMC8602690 DOI: 10.3389/fphar.2021.755653] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 10/13/2021] [Indexed: 01/02/2023] Open
Abstract
Astragaloside IV (AS-IV) has been used to treat cardiovascular disease. However, whether AS-IV exerts a protective effect against hypertensive heart disease has not been investigated. This study aimed to investigate the antihypertensive and cardioprotective effects of AS-IV on L-NAME-induced hypertensive rats via network pharmacology and experimental pharmacology. The network pharmacology and bioinformatics analyses were performed to obtain the potential targets of AS-IV and hypertensive heart disease. The rat hypertension model was established by administrated 50 mg/kg/day of L-NAME for 5 weeks. Meanwhile, hypertension rats were intragastrically administrated with vehicle or AS-IV or fosinopril for 5 weeks. Cardiovascular parameters (systolic blood pressure, diastolic blood pressure, mean arterial pressure, heart rates, and body weight), cardiac function parameters (LVEDd, LVEDs, and fractional shortening), cardiac marker enzymes (creatine kinase, CK-MB, and lactate dehydrogenase), cardiac hypertrophy markers (atrial natriuretic peptide and brain natriuretic peptide), endothelial function biomarkers (nitric oxide and eNOS), inflammation biomarkers (IL-6 and TNF-α) and oxidative stress biomarkers (SOD, MDA, and GSH) were measured and cardiac tissue histology performed. Network pharmacological analysis screened the top 20 key genes in the treatment of hypertensive heart disease treated with AS-IV. Besides, AS-IV exerted a beneficial effect on cardiovascular and cardiac function parameters. Moreover, AS-IV alleviated cardiac hypertrophy via down-regulating the expression of ANP and BNP and improved histopathology changes of cardiac tissue. AS-IV improved endothelial function via the up-regulation of eNOS expression, alleviated oxidative stress via increasing antioxidant enzymes activities, and inhibited cardiac inflammation via down-regulating IL-6 and TNF-α expression. Our findings suggested that AS-IV is a potential therapeutic drug to improve L-NAME-induced hypertensive heart disease partly mediated via modulation of eNOS and oxidative stress.
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Affiliation(s)
- Haoran Jing
- Department of Cardiovascular, the First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Rongsheng Xie
- Department of Cardiovascular, the First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yu Bai
- Department of Cardiovascular, the First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Yuchen Duan
- Department of Cardiovascular, the First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Chongyang Sun
- Department of CT, the First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Ye Wang
- Department of Cardiovascular, the First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Rongyi Cao
- Blood Transfusion Department, the First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Zaisheng Ling
- Department of CT, the Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xiufen Qu
- Department of Cardiovascular, the First Affiliated Hospital of Harbin Medical University, Harbin, China
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10
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Bernak-Oliveira Â, Guizoni DM, Chiavegatto S, Davel AP, Rossoni LV. The protective role of neuronal nitric oxide synthase in endothelial vasodilation in chronic β-adrenoceptor overstimulation. Life Sci 2021; 285:119939. [PMID: 34506836 DOI: 10.1016/j.lfs.2021.119939] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/27/2021] [Accepted: 09/02/2021] [Indexed: 01/12/2023]
Abstract
AIMS Nitric oxide synthases (NOSs) are key enzymes regulating vascular function. Previously, we reported that β-adrenergic (β-AR) overstimulation, a common feature of cardiovascular diseases, did not impair endothelium-dependent vasodilation, although it resulted in endothelial NOS (eNOS) uncoupling and reduced NO bioavailability. In addition to NO, neuronal NOS (nNOS) produces H2O2, which contributes to vasodilation. However, there is limited information regarding vascular β-AR signaling and nNOS. In the present study, we assessed the possible role of nNOS-derived H2O2 and caveolins on endothelial vasodilation function following β-AR overstimulation. MAIN METHODS Male C57BL/6 wild-type and nNOS knockout mice (nNOS-/-) were treated with the β-AR agonist isoproterenol (ISO, 15 mg·kg-1·day-1, s.c.) or vehicle (VHE) for seven days. Relaxation responses of aortic rings were evaluated using wire myograph and H2O2 by Amplex Red. KEY FINDINGS Acetylcholine- or calcium ionophore A23187-induced endothelium-dependent relaxation was similar in aortic rings from VHE and ISO. However, this relaxation was significantly reduced in aortas from ISO compared to VHE when (1) caveolae were disrupted, (2) nNOS was pharmacologically inhibited or genetically suppressed and (3) H2O2 was scavenged. NOS-derived H2O2 production was higher in the aortas of ISO mice than in those of VHE mice. Aortas from ISO-treated mice showed increased expression of caveolin-1, nNOS and catalase, while caveolin-3 expression did not change. SIGNIFICANCE The results suggest a role of caveolin-1 and the nNOS/H2O2 vasodilatory pathway in endothelium-dependent relaxation following β-AR overstimulation and reinforce the protective role of nNOS in cardiovascular diseases associated with high adrenergic tone.
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Affiliation(s)
- Ângelo Bernak-Oliveira
- Department of Physiology and Biophysics, Institute of Biomedical Sciences (ICB), University of Sao Paulo (USP), Brazil
| | - Daniele M Guizoni
- Department of Structural and Functional Biology, Institute of Biology (IB), University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil
| | - Silvana Chiavegatto
- Department of Pharmacology, Institute of Biomedical Sciences (ICB), University of Sao Paulo (USP), Brazil; Department of Psychiatry, Institute of Psychiatry (IPq), University of Sao Paulo Medical School (FMUSP), Sao Paulo, Brazil
| | - Ana P Davel
- Department of Structural and Functional Biology, Institute of Biology (IB), University of Campinas (UNICAMP), Campinas, Sao Paulo, Brazil.
| | - Luciana V Rossoni
- Department of Physiology and Biophysics, Institute of Biomedical Sciences (ICB), University of Sao Paulo (USP), Brazil.
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11
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da Silva GM, da Silva MC, Nascimento DVG, Lima Silva EM, Gouvêa FFF, de França Lopes LG, Araújo AV, Ferraz Pereira KN, de Queiroz TM. Nitric Oxide as a Central Molecule in Hypertension: Focus on the Vasorelaxant Activity of New Nitric Oxide Donors. BIOLOGY 2021; 10:biology10101041. [PMID: 34681140 PMCID: PMC8533285 DOI: 10.3390/biology10101041] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/08/2021] [Accepted: 10/09/2021] [Indexed: 12/15/2022]
Abstract
Cardiovascular diseases include all types of disorders related to the heart or blood vessels. High blood pressure is an important risk factor for cardiac complications and pathological disorders. An increase in circulating angiotensin-II is a potent stimulus for the expression of reactive oxygen species and pro-inflammatory cytokines that activate oxidative stress, perpetuating a deleterious effect in hypertension. Studies demonstrate the capacity of NO to prevent platelet or leukocyte activation and adhesion and inhibition of proliferation, as well as to modulate inflammatory or anti-inflammatory reactions and migration of vascular smooth muscle cells. However, in conditions of low availability of NO, such as during hypertension, these processes are impaired. Currently, there is great interest in the development of compounds capable of releasing NO in a modulated and stable way. Accordingly, compounds containing metal ions coupled to NO are being investigated and are widely recognized as having great relevance in the treatment of different diseases. Therefore, the exogenous administration of NO is an attractive and pharmacological alternative in the study and treatment of hypertension. The present review summarizes the role of nitric oxide in hypertension, focusing on the role of new NO donors, particularly the metal-based drugs and their protagonist activity in vascular function.
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Affiliation(s)
- Gabriela Maria da Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Mirelly Cunha da Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Déborah Victória Gomes Nascimento
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Ellen Mayara Lima Silva
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Fabíola Furtado Fialho Gouvêa
- School of Technical Health, Health Sciences Center, Federal University of Paraíba, João Pessoa 58.051-900, PB, Brazil;
| | - Luiz Gonzaga de França Lopes
- Laboratory of Bioinorganic Chemistry, Department of Organic and Inorganic Chemistry, Federal University of Ceará, Fortaleza 60.020-181, CE, Brazil;
| | - Alice Valença Araújo
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Kelli Nogueira Ferraz Pereira
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
| | - Thyago Moreira de Queiroz
- Laboratory of Nutrition, Physical Activity and Phenotypic Plasticity, Federal University of Pernambuco, Vitória de Santo Antão 55.608-680, PE, Brazil; (G.M.d.S.); (M.C.d.S.); (D.V.G.N.); (E.M.L.S.); (A.V.A.); (K.N.F.P.)
- Correspondence:
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12
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Rostoka E, Salna I, Dekante A, Pahirko L, Borisovs V, Celma L, Valeinis J, Sjakste N, Sokolovska J. DNA damage in leukocytes and serum nitrite concentration are negatively associated in type 1 diabetes. Mutagenesis 2021; 36:213-222. [PMID: 34008029 DOI: 10.1093/mutage/geab015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Accepted: 05/12/2021] [Indexed: 11/12/2022] Open
Abstract
Chronic hyperglycaemia leads to DNA damage in diabetes and might be associated with nitrosative stress. In this study, we aimed at assessing the level of DNA strand breaks in leukocytes, serum nitrite and nitrate in patients with type 1 diabetes and healthy controls and associations of these parameters with diabetes-related outcomes in a prospective study. The level of DNA damage was determined in 71 patients with type 1 diabetes and 57 healthy controls by comet assay and scored with arbitrary units (AU). The chemiluminescence method was used to measure nitrite and nitrate. Clinical information and data on consumption of alcohol, physical activity and smoking were collected. Progression of complications in patients with diabetes was assessed after a follow-up time of 4-5 years. We observed a higher level of DNA damage in leukocytes of patients with type 1 diabetes compared with healthy subjects [type 1 diabetes AU 50 (36-74.5); control AU 30 (24.1-43), P < 0.001]. According to regression, type 1 diabetes leads to a 2-fold increase in DNA damage. In the group of type 1 diabetes, DNA damage correlated positively with total cholesterol (R = 0.262, P = 0.028) and negatively with serum glucose level (R = -0.284; P = 0.018) and serum nitrite (R = -0.335; P = 0.008). DNA damage was not significantly associated with HbA1c, diabetes duration, complications and lifestyle factors. However, DNA damage > 57 AU was associated with statistically significantly lower serum nitrite and 1.52 higher risk of progression of complications of diabetes over the follow-up period. The latter result was not statistically significant due to insufficient study power [relative risk 1.52 (95% confidence interval = 0.68, 3.42, P = 0.31)]. Our results confirm that type 1 diabetes is associated with a higher level of DNA strand breaks in leukocytes when compared with the reference group and demonstrate the negative association between DNA damage and serum nitrite concentration.
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Affiliation(s)
- Evita Rostoka
- Faculty of Medicine, University of Latvia, Jelgavas Street 3, LV1004 Riga, Latvia
| | - Ilze Salna
- Residency Development Program, University of Latvia, Aspazijas Bvd. 5, LV1050 Riga, Latvia
| | - Alise Dekante
- Residency Development Program, University of Latvia, Aspazijas Bvd. 5, LV1050 Riga, Latvia
| | - Leonora Pahirko
- Faculty of Physics, Mathematics and Optometry, University of Latvia, Jelgavas Street 3, LV1004 Riga, Latvia
| | - Vitalijs Borisovs
- Faculty of Medicine, University of Latvia, Jelgavas Street 3, LV1004 Riga, Latvia
| | - Laura Celma
- Faculty of Medicine, University of Latvia, Jelgavas Street 3, LV1004 Riga, Latvia
| | - Jānis Valeinis
- Faculty of Physics, Mathematics and Optometry, University of Latvia, Jelgavas Street 3, LV1004 Riga, Latvia
| | - Nikolajs Sjakste
- Faculty of Medicine, University of Latvia, Jelgavas Street 3, LV1004 Riga, Latvia
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Chen J, Zhang Y, Wang Y, Jiang P, Zhou G, Li Z, Yang J, Li X. Potential mechanisms of Guizhi decoction against hypertension based on network pharmacology and Dahl salt-sensitive rat model. Chin Med 2021; 16:34. [PMID: 33906674 PMCID: PMC8077739 DOI: 10.1186/s13020-021-00446-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 04/20/2021] [Indexed: 12/11/2022] Open
Abstract
Background Guizhi decoction (GZD), a classical Chinese herbal formula, has been widely used to treat hypertension, but its underlying mechanisms remain elusive. The present study aimed to explore the potential mechanisms and therapeutic effects of GZD on hypertension by integrating network pharmacology and experimental validation. Methods The active ingredients and corresponding targets were collected from the Traditional Chinese Medicine Systems Pharmacology database and Analysis Platform (TCMSP). The targets related to hypertension were identified from the CTD, GeneCards, OMIM and Drugbank databases. Multiple networks were constructed to identify the key compounds, hub targets, and main biological processes and pathways of GZD against hypertension. The Surflex-Dock software was used to validate the binding affinity between key targets and their corresponding active compounds. The Dahl salt-sensitive rat model was used to evaluate the therapeutic effects of GZD against hypertension. Results A total of 112 active ingredients, 222 targets of GZD and 341 hypertension-related targets were obtained. Furthermore, 56 overlapping targets were identified, five of which were determined as the hub targets for experimental verification, including interleukin 6 (IL-6), C–C motif chemokine 2 (CCL2), IL-1β, matrix metalloproteinase 2 (MMP-2), and MMP-9. Pathway enrichment analysis results indicated that 56 overlapping targets were mainly enriched in several inflammation pathways such as the tumor necrosis factor (TNF) signaling pathway, Toll-like receptor (TLR) signaling pathway and nuclear factor kappa-B (NF-κB) signaling pathway. Molecular docking confirmed that most active compounds of GZD could bind tightly to the key targets. Experimental studies revealed that the administration of GZD improved blood pressure, reduced the area of cardiac fibrosis, and inhibited the expression of IL-6, CCL2, IL-1β, MMP-2 and MMP-9 in rats. Conclusion The potential mechanisms and therapeutic effects of GZD on hypertension may be attributed to the regulation of cardiac inflammation and fibrosis. Supplementary Information The online version contains supplementary material available at 10.1186/s13020-021-00446-x.
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Affiliation(s)
- Jiye Chen
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, China
| | - Yongjian Zhang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, China
| | - Yongcheng Wang
- Department of Cardiovascular, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250011, China
| | - Ping Jiang
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, China
| | - Guofeng Zhou
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, China
| | - Zhaoyu Li
- First Clinical Medical College, Shandong University of Traditional Chinese Medicine, Jinan, 250014, China
| | - Jinlong Yang
- Department of Cardiovascular, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250011, China
| | - Xiao Li
- Department of Cardiovascular, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250011, China.
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Eligini S, Colli S, Habib A, Aldini G, Altomare A, Banfi C. Cyclooxygenase-2 Glycosylation Is Affected by Peroxynitrite in Endothelial Cells: Impact on Enzyme Activity and Degradation. Antioxidants (Basel) 2021; 10:496. [PMID: 33806920 PMCID: PMC8005028 DOI: 10.3390/antiox10030496] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/15/2021] [Accepted: 03/19/2021] [Indexed: 12/12/2022] Open
Abstract
The exposure of human endothelial cells to 3-morpholinosydnonimine (SIN-1) induced the expression of cyclooxygenase-2 (COX-2) in a dose- and time-dependent manner. Interestingly, after a prolonged incubation (>8 h) several proteoforms were visualized by Western blot, corresponding to different states of glycosylation of the protein. This effect was specific for SIN-1 that generates peroxynitrite and it was not detected with other nitric oxide-donors. Metabolic labeling experiments using 35S or cycloheximide suggested that the formation of hypoglycosylated COX-2 was dependent on de novo synthesis of the protein rather than the deglycosylation of the native protein. Moreover, SIN-1 reduced the activity of the hexokinase, the enzyme responsible for the first step of glycolysis. The hypoglycosylated COX-2 induced by SIN-1 showed a reduced capacity to generate prostaglandins and the activity was only partially recovered after immunoprecipitation. Finally, hypoglycosylated COX-2 showed a more rapid rate of degradation compared to COX-2 induced by IL-1α and an alteration in the localization with an accumulation mainly detected in the nuclear membrane. Our results have important implication to understand the effect of peroxynitrite on COX-2 expression and activity, and they may help to identify new pharmacological tools direct to increase COX-2 degradation or to inhibit its activity.
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Affiliation(s)
- Sonia Eligini
- Centro Cardiologico Monzino I.R.C.C.S., 20138 Milan, Italy;
| | - Susanna Colli
- Dipartimento di Scienze Farmacologiche, Università degli Studi di Milano, 20133 Milan, Italy;
| | - Aida Habib
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut, Beirut 1107 2020, Lebanon;
- INSERM-UMR1149, Centre de Recherche sur l’Inflammation, and Sorbonne Paris Cité, Laboratoire d’Excellence Inflamex, Faculté de Médecine, Site Xavier Bichat, Université de Paris, 75018 Paris, France
| | - Giancarlo Aldini
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (G.A.); (A.A.)
| | - Alessandra Altomare
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, 20133 Milano, Italy; (G.A.); (A.A.)
| | - Cristina Banfi
- Centro Cardiologico Monzino I.R.C.C.S., 20138 Milan, Italy;
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Giordo R, Zinellu A, Eid AH, Pintus G. Therapeutic Potential of Resveratrol in COVID-19-Associated Hemostatic Disorders. Molecules 2021; 26:856. [PMID: 33562030 PMCID: PMC7915700 DOI: 10.3390/molecules26040856] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 01/30/2021] [Accepted: 02/03/2021] [Indexed: 12/14/2022] Open
Abstract
Coagulation disorders, endotheliopathy and inflammation are the most common hallmarks in SARS-CoV-2 infection, largely determining COVID-19's outcome and severity. Dysfunctions of endothelial cells and platelets are tightly linked in contributing to the systemic inflammatory response that appears to be both a cause and a consequence of COVID-19-associated coagulation disorders and thrombotic events. Indeed, elevated levels of circulating inflammatory cytokines are often associated with abnormal coagulation parameters in COVID-19 patients. Although treatments with low molecular weight heparin (LMWH) have shown beneficial effects in decreasing patient mortality with severe COVID-19, additional therapeutic strategies are urgently needed. Utilizing the anti-inflammatory and anti-thrombotic properties of natural compounds may provide alternative therapeutic approaches to prevent or reduce the risk factors associated with pre-existing conditions and comorbidities that can worsen COVID-19 patients' outcomes. In this regard, resveratrol, a natural compound found in several plants and fruits such as grapes, blueberries and cranberries, may represent a promising coadjuvant for the prevention and treatment of COVID-19. By virtue of its anti-thrombotic and anti-inflammatory properties, resveratrol would be expected to lower COVID-19-associated mortality, which is well known to be increased by thrombosis and inflammation. This review analyzes and discusses resveratrol's ability to modulate vascular hemostasis at different levels targeting both primary hemostasis (interfering with platelet activation and aggregation) and secondary hemostasis (modulating factors involved in coagulation cascade).
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Affiliation(s)
- Roberta Giordo
- Department of Medical Laboratory Sciences, College of Health Sciences, and Sharjah Institute for Medical Research, University of Sharjah, University City Rd, Sharjah 27272, United Arab Emirates;
| | - Angelo Zinellu
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy;
| | - Ali Hussein Eid
- Department of Basic Medical Sciences, College of Medicine, QU Health, Qatar University, P.O. Box 2713 Doha, Qatar
- Biomedical and Pharmaceutical Research Unit, QU Health, Qatar University, P.O. Box 2713 Doha, Qatar
| | - Gianfranco Pintus
- Department of Medical Laboratory Sciences, College of Health Sciences, and Sharjah Institute for Medical Research, University of Sharjah, University City Rd, Sharjah 27272, United Arab Emirates;
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy;
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Giordo R, Paliogiannis P, Mangoni AA, Pintus G. SARS-CoV-2 and endothelial cell interaction in COVID-19: molecular perspectives. VASCULAR BIOLOGY (BRISTOL, ENGLAND) 2021; 3:R15-R23. [PMID: 33659858 PMCID: PMC7923034 DOI: 10.1530/vb-20-0017] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 01/12/2021] [Indexed: 12/12/2022]
Abstract
SARS-CoV-2 is the agent responsible for the coronavirus disease (COVID-19), which has been declared a pandemic by the World Health Organization. The clinical evolution of COVID-19 ranges from asymptomatic infection to death. Older people and patients with underlying medical conditions, particularly diabetes, cardiovascular and chronic respiratory diseases are more susceptible to develop severe forms of COVID-19. Significant endothelial damage has been reported in COVID-19 and growing evidence supports the key pathophysiological role of this alteration in the onset and the progression of the disease. In particular, the impaired vascular homeostasis secondary to the structural and functional damage of the endothelium and its main component, the endothelial cells, contributes to the systemic proinflammatory state and the multiorgan involvement observed in COVID-19 patients. This review summarizes the current evidence supporting the proposition that the endothelium is a key target of SARS-CoV-2, with a focus on the molecular mechanisms involved in the interaction between SARS-CoV-2 and endothelial cells.
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Affiliation(s)
- Roberta Giordo
- Department of Medical Laboratory Sciences, College of Health Sciences, and Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates
| | - Panagiotis Paliogiannis
- Department of Medical, Surgical and Experimental Surgery, University of Sassari, Sassari, Italy
| | - Arduino Aleksander Mangoni
- Discipline of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Adelaide, Australia
| | - Gianfranco Pintus
- Department of Medical Laboratory Sciences, College of Health Sciences, and Sharjah Institute for Medical Research, University of Sharjah, Sharjah, United Arab Emirates
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro, Sassari, Italy
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Li Y, Zhong D, Dong C, Shi L, Zheng Y, Liu Y, Li Q, Zheng H, Li J, Liu T, Jin R. The effectiveness and safety of Tai Chi for patients with essential hypertension: study protocol for an open-label single-center randomized controlled trial. BMC Complement Med Ther 2021; 21:23. [PMID: 33413354 PMCID: PMC7792191 DOI: 10.1186/s12906-020-03192-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 12/15/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Evidence showed that Tai Chi may have beneficial effects among hypertensive individuals, although the results are not convincing. We aim to conduct a high-quality clinical trial with 24-h BP measurement to provide robust evidence of Tai Chi for essential hypertension. METHODS This is an open-label single-center randomized controlled trial with 3 parallel arms. We will compare Tai Chi with walking and waiting-list control. We will recruit 234 hypertensive patients with mild to moderate essential hypertension and randomly assign them to 3 different groups. Participants in Tai Chi group will receive a group-format Yang style 24-form Tai Chi exercise program, 3 sessions per week for 12 weeks. The walking group will be asked to walk, 3 sessions per week for 12 weeks. The waiting-list group will not receive any interventions and/or exercise training. The primary outcome is the change in average 24-h systolic blood pressure (SBP) between baseline and 12 weeks after randomization. The secondary outcomes include 24-h Diastolic Blood Pressure (DBP), average SBP and average DBP during the daytime and night-time, blood pressure (BP) variability, SBP load and DBP load, circadian rhythm of BP, and morning BP surge, endothelial functional indicators, home measured BP, quality of life, adverse events and so on. DISCUSSION We expect findings of this trial will provide important insight into application of Tai Chi as an effective and acceptable method for hypertensive patients. Successful completion of this proposed study will also contribute to promotion of Tai Chi in the community in the future. TRIAL REGISTRATION Clinicaltrials.gov registry: https://clinicaltrials.gov/ct2/show/NCT04267471 , date: February 12, 2020.
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Affiliation(s)
- Yuxi Li
- School of Acupuncture-Moxibustion and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Dongling Zhong
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chao Dong
- The General Hospital of Western Theater Command, Chengdu, China
| | - Lihong Shi
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yaling Zheng
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yongguo Liu
- Knowledge and Data Engineering Laboratory of Chinese Medicine, School of Information and Software Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Qiaoqin Li
- Knowledge and Data Engineering Laboratory of Chinese Medicine, School of Information and Software Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Hui Zheng
- School of Acupuncture-Moxibustion and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Juan Li
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Tianyu Liu
- School of Sports, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Rongjiang Jin
- School of Health Preservation and Rehabilitation, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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Yu C, Chen S, Wang X, Wu G, Zhang Y, Fu C, Hu C, Liu Z, Luo X, Wang J, Chen L. Exposure to maternal diabetes induces endothelial dysfunction and hypertension in adult male rat offspring. Microvasc Res 2021; 133:104076. [PMID: 32956647 DOI: 10.1016/j.mvr.2020.104076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 01/10/2023]
Abstract
The adverse environment in early life can modulate adult phenotype, including blood pressure. Our previous study shows, in a rat streptozotocin (STZ)-induced maternal diabetes model, fetal exposure to maternal diabetes is characterized by established hypertension in the offspring. However, the exact mechanisms are not known. Our present study found, as compared with male control mother offspring (CMO), male diabetic mother offspring (DMO) had higher blood pressure with arterial dysfunction, i.e., decreased acetylcholine (Ach)-induced vasodilation. But there is no difference in blood pressure between female CMO and DMO. The decreased Ach-induced vasodilation was related to decreased nitric oxide (NO) production in the endothelium, not NO sensitivity in vascular smooth muscle because sodium nitroprusside (SNP)-mediated vasodilation was preserved; there was decreased NO production and lower eNOS phosphorylation in male DMO. The reactive oxygen species (ROS) level was increased in male DMO than CMO; normalized ROS levels with tempol increased NO production, normalized Ach-mediated vasodilation, and lowered blood pressure in male DMO rats. It indicates that diabetic programming hypertension is related to arterial dysfunction; normalizing ROS might be a potential strategy for the prevention of hypertension in the offspring.
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MESH Headings
- Age Factors
- Animals
- Arterial Pressure
- Blood Glucose/metabolism
- Cyclic GMP/metabolism
- Diabetes Mellitus, Experimental/blood
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/physiopathology
- Diabetes, Gestational/blood
- Diabetes, Gestational/physiopathology
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/physiopathology
- Female
- Hypertension/etiology
- Hypertension/metabolism
- Hypertension/physiopathology
- Male
- Mesenteric Artery, Superior/metabolism
- Mesenteric Artery, Superior/physiopathology
- Nitric Oxide/metabolism
- Oxidative Stress
- Pregnancy
- Prenatal Exposure Delayed Effects
- Rats, Sprague-Dawley
- Reactive Oxygen Species/metabolism
- Sex Factors
- Vasodilation
- Rats
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Affiliation(s)
- Cheng Yu
- Department of Cardiology, Fujian Heart Center, Provincial Institute of Coronary Disease, Fujian Medical University Union Hospital, Fuzhou, Fujian, China; Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Shuo Chen
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Xinquan Wang
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Gengze Wu
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Ye Zhang
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Chunjiang Fu
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Cuimei Hu
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Zhengbi Liu
- Center of Laboratory Animal, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xiaoli Luo
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Jialiang Wang
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China.
| | - Lianglong Chen
- Department of Cardiology, Fujian Heart Center, Provincial Institute of Coronary Disease, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.
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Budanova DA, Antyufeeva ON, Ilgisonis IS, Sokolova IY, Belenkov YN, Ershov VI, Bochkarnikova OV, Gadaev IY. [Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow]. ACTA ACUST UNITED AC 2020; 60:1390. [PMID: 33487150 DOI: 10.18087/cardio.2020.11.n1390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 11/24/2020] [Indexed: 11/18/2022]
Abstract
Aim To study changes in markers for myocardial direct injury and dysfunction and endothelial dysfunction (ED) indexes in patients with indolent lymphoma during the antitumor treatment.Material and methods Current antitumor therapy for lymphoma is often associated with cardio- and vasculotoxicity, studying of which is a relevant scientific direction. Markers for myocardial direct injury and dysfunction and ED indexes were studied in patients with indolent lymphomas receiving polychemotherapy (PCT). The study included 77 patients with newly diagnosed indolent type lymphoma. The main group (n=52): mean age, 63.4±2.8 years, 15 (28.8 %) men who had received one course of PCT. The comparison group (n=25): mean age, 61.8±3.7 years, 8 (32 %) men who had not received PCT. Troponin I (TnI), high-sensitivity troponin I (hs-сTnI), heart-type fatty acid binding protein (h-FAВР), and N-terminal pro-B-type natriuretic peptide (NT-prоBNP) were measured in patients of both groups. ED was evaluated by measuring the level of vascular cell adhesion molecule (VCAM) and by assessing the structure and function condition of small blood vessels using photoplethysmography. In both groups, the study parameters were determined at the start of the study (T1) and following the PCT course in the main group; if the PCT schedule included anthracycline antibiotics, the second point (T2) was assessed at 6 h following the drug administration.Results In both groups, the level of NT-proBNP was increased. This increase was significantly more pronounced in the comparison group (49.896±23.228 vs 20.877±8.534 pmol/l, respectively, p=0.011) whereas a tendency to its increase was observed after the PCT course. Before the start of the treatment, laboratory and instrumental signs of ED were noticed: the level of VCAM was 4951±1297 and 3225±757 ng/ml in the comparison group and the main group, respectively (р=0.246); reflection index was <1.8 in 23 (44.2%) patients of the main group and in 16 (64%) patients of the comparison group (р=0.098). During the PTC course, the endothelial function significantly improved; the level of VCAM decreased by 748 ng/ml (p=0.016), which was associated with significant decreases in erythrocyte sedimentation rate by 2.71 mm/h (р=0.027) and lactate dehydrogenase level by 62.38 U/l (р=0.026). Statistically significant decreases in other inflammatory markers (alpha-2-globulin, fibrinogen, C-reactive protein, neutrophil count) were not observed.Conclusion The level of NT-proBNP showed the highest sensitivity in assessing the cardiotoxic effect of PCT. The dynamics of VCAM level suggested a possible role of the disease itself in the development of ED in this patient group.
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Affiliation(s)
- D A Budanova
- Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow
| | - O N Antyufeeva
- Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow
| | - I S Ilgisonis
- Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow
| | - I Ya Sokolova
- Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow
| | - Yu N Belenkov
- Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow
| | - V I Ershov
- Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow
| | - O V Bochkarnikova
- Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow
| | - I Yu Gadaev
- Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow
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20
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Xavier FE. Nitrergic perivascular innervation in health and diseases: Focus on vascular tone regulation. Acta Physiol (Oxf) 2020; 230:e13484. [PMID: 32336027 DOI: 10.1111/apha.13484] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 04/14/2020] [Accepted: 04/16/2020] [Indexed: 12/12/2022]
Abstract
For a long time, the vascular tone was considered to be regulated exclusively by tonic innervation of vasoconstrictor adrenergic nerves. However, accumulating experimental evidence has revealed the existence of nerves mediating vasodilatation, including perivascular nitrergic nerves (PNN), in a wide variety of mammalian species. Functioning of nitrergic vasodilator nerves is evidenced in several territories, including cerebral, mesenteric, pulmonary, renal, penile, uterine and cutaneous arteries. Nitric oxide (NO) is the main neurogenic vasodilator in cerebral arteries and acts as a counter-regulatory mechanism for adrenergic vasoconstriction in other vascular territories. In the penis, NO relaxes the vascular and cavernous smooth muscles leading to penile erection. Furthermore, when interacting with other perivascular nerves, NO can act as a neuromodulator. PNN dysfunction is involved in the genesis and maintenance of vascular disorders associated with arterial and portal hypertension, diabetes, ageing, obesity, cirrhosis and hormonal changes. For example defective nitrergic function contributes to enhanced sympathetic neurotransmission, vasoconstriction and blood pressure in some animal models of hypertension. In diabetic animals and humans, dysfunctional nitrergic neurotransmission in the corpus cavernosum is associated with erectile dysfunction. However, in some vascular beds of hypertensive and diabetic animals, an increased PNN function has been described as a compensatory mechanism to the increased vascular resistance. The present review summarizes current understanding on the role of PNN in control of vascular tone, its alterations under different conditions and the associated mechanisms. The knowledge of these changes can serve to better understand the mechanisms involved in these disorders and help in planning new treatments.
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Affiliation(s)
- Fabiano E. Xavier
- Departamento de Fisiologia e Farmacologia Centro de Biociências Universidade Federal de Pernambuco Recife Brazil
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21
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da Rosa Santos L, de Araujo SS, Vieira EFDS, Estevam CDS, dos Santos JL, Wichi RB, Lima FB, Carvalho CRO, Aidar FJ, Marçal AC. Effects of 12 Weeks of Resistance Training on Cardiovascular Risk Factors in School Adolescents. MEDICINA (KAUNAS, LITHUANIA) 2020; 56:E220. [PMID: 32384612 PMCID: PMC7279337 DOI: 10.3390/medicina56050220] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/28/2020] [Accepted: 04/30/2020] [Indexed: 12/11/2022]
Abstract
Background and objectives: The practice of physical exercise, especially resistance exercise, is important for the treatment and/or prevention of cardiovascular risk factors in adult individuals. However, there are few studies on its effects on adolescent individuals. Therefore, the aim of the present study was to evaluate the effects of applying a 12-week resistance training program on cardiovascular risk factors in adolescents. Materials and Methods: Thus, 122 adolescents aged 13-16 years of both genders participated in the study from school in the city of Lagarto, Sergipe (SE), Brazil, divided into two groups: Control Group (CG) and Group undergoing resistance training (RTG). Blood collection and anthropometric measurements were performed before and after the 12-week resistance training program (RTP). Results: After 12 weeks of the RTP in the adolescents, there was a reduction in the triglyceride variables (9.55%, p = 0.0286), Low-Density Lipoproteins (LDL) (5.42%, p = 0.0244), non-High-Density Lipoproteins (HDL) (5.40%, p = 0.0019), blood glucose (6.71%, p = 0.0040), systolic blood pressure (10.13%, p < 0.0001), as well as an increase in the body weight variable (1.73%, p = 0.0003). Conclusions: It was concluded that a 12-week RTP can prevent and/or alleviate the development of several chronic degenerative diseases in adulthood and that resistance training is important for maintaining the health of adolescents.
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Affiliation(s)
- Lorrany da Rosa Santos
- Departamento de Educação Física, Universidade Federal de Sergipe, São Cristóvão 49040-780, Brazil; (L.d.R.S.); (S.S.d.A.); (E.F.d.S.V.); (J.L.d.S.); (R.B.W.)
| | - Silvan Silva de Araujo
- Departamento de Educação Física, Universidade Federal de Sergipe, São Cristóvão 49040-780, Brazil; (L.d.R.S.); (S.S.d.A.); (E.F.d.S.V.); (J.L.d.S.); (R.B.W.)
- Secretaria de Estado da Educação, do Esporte e da Cultura (SEED/SE), Aracaju 49075-470, Brazil
| | - Erlânyo Francisco dos Santos Vieira
- Departamento de Educação Física, Universidade Federal de Sergipe, São Cristóvão 49040-780, Brazil; (L.d.R.S.); (S.S.d.A.); (E.F.d.S.V.); (J.L.d.S.); (R.B.W.)
| | | | - Jymmys Lopes dos Santos
- Departamento de Educação Física, Universidade Federal de Sergipe, São Cristóvão 49040-780, Brazil; (L.d.R.S.); (S.S.d.A.); (E.F.d.S.V.); (J.L.d.S.); (R.B.W.)
| | - Rogério Brandão Wichi
- Departamento de Educação Física, Universidade Federal de Sergipe, São Cristóvão 49040-780, Brazil; (L.d.R.S.); (S.S.d.A.); (E.F.d.S.V.); (J.L.d.S.); (R.B.W.)
| | - Fábio Bessa Lima
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas I (ICB I), Universidade de São Paulo, São Paulo 05508-000, Brazil; (F.B.L.); (C.R.O.C.)
| | - Carla Roberta Oliveira Carvalho
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biomédicas I (ICB I), Universidade de São Paulo, São Paulo 05508-000, Brazil; (F.B.L.); (C.R.O.C.)
| | - Felipe José Aidar
- Physical Education Department and Group of Studies and Research of Performance, Sport, Health and Paralympic Sports―GEPEPS, Universidade Federal de Sergipe, São Cristóvão 49100-000, Brazil;
| | - Anderson Carlos Marçal
- Departamento de Morfologia, Universidade Federal de Sergipe, São Cristóvão 49100-000, Brazil
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Aspirin Eugenol Ester Reduces H 2O 2-Induced Oxidative Stress of HUVECs via Mitochondria-Lysosome Axis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:8098135. [PMID: 31583045 PMCID: PMC6754946 DOI: 10.1155/2019/8098135] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 03/12/2019] [Accepted: 04/07/2019] [Indexed: 01/29/2023]
Abstract
The oxidative stress of vessel endothelium is a major risk factor of cardiovascular disorders. Antioxidative stress drugs are widely used in cardiovascular therapy. Aspirin eugenol ester (AEE) is a new pharmaceutical compound synthesized by esterification reaction of aspirin with eugenols and possesses antioxidative activity. The present study was designed to investigate the mechanism how AEE protects human umbilical vein endothelial cells (HUVECs) from H2O2-induced oxidative stress. H2O2 was given to the HUVECs with or without AEE pretreatment. Changes in the oxidative stress-related factors, including those related to the mitochondria-lysosome axis, were determined with Western blotting, cellular immunofluorescence, and enzyme activity test. The results showed that, in the HUVECs, 300 μM H2O2 treatment significantly increased the apoptosis rate, MDA concentration, reactive oxygen species (ROS) production, mitochondrial membrane potential, expression of Bax and mature cathepsin D (CTSD), and activity of CTSD and Caspase3 (Cas3) but decreased the expression of Bcl2 and lysosomal membrane stability, while in the HUVECs pretreated with AEE, the above changes caused by either the stimulatory or the inhibitory effect of H2O2 on the relevant factors were significantly reduced. AEE pretreatment significantly enhanced the activity of cellular superoxide dismutase and glutathione peroxidase in the HUVECs. Our findings suggest that AEE effectively reduced H2O2-induced oxidative stress in the HUVECs via mitochondria-lysosome axis.
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Zhang S, Guo S, Gao XB, Liu A, Jiang W, Chen X, Yang P, Liu LN, Shi L, Zhang Y. Matrine attenuates high-fat diet-induced in vivo and ox-LDL-induced in vitro vascular injury by regulating the PKCα/eNOS and PI3K/Akt/eNOS pathways. J Cell Mol Med 2019; 23:2731-2743. [PMID: 30770623 PMCID: PMC6433715 DOI: 10.1111/jcmm.14180] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 11/15/2018] [Accepted: 01/04/2019] [Indexed: 12/14/2022] Open
Abstract
Lipid metabolism disorders lead to vascular endothelial injury. Matrine is an alkaloid that has been used to improve obesity and diabetes and for the treatment of hepatitis B. However, its effect on lipid metabolism disorders and vascular injury is unclear. Here, we investigated the effect of matrine on high‐fat diet fed mice and oxidized low‐density lipoprotein (ox‐LDL)‐induced human umbilical vein endothelial cells (HUVECs). Computational virtual docking analyses, phosphoinositide 3‐kinase (PI3K) and protein kinase C‐α (PKCα) inhibitors were used to localize matrine in vascular injuries. The results showed that matrine‐treated mice were more resistant to abnormal lipid metabolism and inflammation than vehicle‐treated mice and exhibited significantly alleviated ox‐LDL‐stimulated dysfunction of HUVECs, restored diminished nitric oxide release, decreased reactive oxygen species generation and increased expression phosphorylation of AKT‐Ser473 and endothelial nitric oxide synthase (eNOS)‐Ser1177. Matrine not only up‐regulates eNOS‐Ser1177 but also down‐regulates eNOS‐Thr495, a PKCα‐controlled negative regulator of eNOS. Using computational virtual docking analyses and biochemical assays, matrine was also shown to influence eNOS/NO via PKCα inhibition. Moreover, the protective effects of matrine were significantly abolished by the simultaneous application of PKCα and the PI3K inhibitor. Matrine may thus be potentially employed as a novel therapeutic strategy against high‐fat diet‐induced vascular injury.
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Affiliation(s)
- Song Zhang
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
| | - Shun Guo
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
| | - Xiao-Bo Gao
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
| | - An Liu
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
| | - Wei Jiang
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
| | - Xi Chen
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
| | - Peng Yang
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
| | - Lin-Na Liu
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
| | - Lei Shi
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
| | - Yan Zhang
- Department of Pharmacy, The Second Affiliated Hospital of Air Force Medical University, Xi'an, PR China
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Oishi JC, Castro CA, Silva KA, Fabricio V, Cárnio EC, Phillips SA, Duarte ACGDO, Rodrigues GJ. Endothelial Dysfunction and Inflammation Precedes Elevations in Blood Pressure Induced by a High-Fat Diet. Arq Bras Cardiol 2019; 110:558-567. [PMID: 30226915 PMCID: PMC6023639 DOI: 10.5935/abc.20180086] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/06/2017] [Indexed: 12/11/2022] Open
Abstract
Background Obesity leads to a chronic inflammatory state, endothelial dysfunction and
hypertension. Objective To establish the time-course of events regarding inflammatory markers,
endothelial dysfunction, systolic blood pressure (SBP) in obesity in only
one experimental model. Methods We fed male Wistar rats (eight-week age) with a standard diet (Control - CT,
n = 35), or palatable high-fat diet (HFD, n = 35) for 24 weeks. Every six
weeks, 7 animals from each group were randomly selected for euthanasia. SBP
and serum levels of interleukin-6, tumor necrosis factor-α,
C-reactive protein, adiponectin and nitric oxide were determined.
Endothelial and vascular smooth muscle functions were determined in
dissected aorta and lipid peroxidation was measured. Statistical
significance was set at p < 0.05. Results Levels of pro-inflammatory cytokines began to increase after six weeks of a
high-fat diet, while those of the anti-inflammatory cytokine adiponectin
decreased. Interestingly, the endothelial function and serum nitric oxide
began to decrease after six weeks in HFD group. The SBP and lipid
peroxidation began to increase at 12 weeks in HFD group. In addition, we
showed that total visceral fat mass was negatively correlated with
endothelial function and positively correlated with SBP. Conclusion Our results show the time-course of deleterious effects and their correlation
with obesity.
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Affiliation(s)
| | | | - Karina Ana Silva
- Universidade Federal de São Carlos (UFSCar), São Paulo, SP - Brazil
| | - Victor Fabricio
- Universidade Federal de São Carlos (UFSCar), São Paulo, SP - Brazil
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Durgarao Y, Manjrekar PA, Adhikari P, Chakrapani M, Rukmini MS. Comprehensive Review on Diabetes Associated Cardiovascular Complications - The Vitamin D Perspective. Cardiovasc Hematol Disord Drug Targets 2019; 19:139-153. [PMID: 30648528 DOI: 10.2174/1871529x19666190114155302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 11/14/2018] [Accepted: 11/28/2018] [Indexed: 12/14/2022]
Abstract
Vitamin D, a steroid hormone is primarily known for its role in calcium and bone mineral homeostasis. Over the years, vitamin D has been implicated in various non-skeletal diseases. The extraskeletal phenomenon can be attributed to the presence of vitamin D receptors (VDRs) in almost all cells and identification of 1-α hydroxylase in extrarenal tissues. The vitamin D deficiency (VDD) pandemic was globally reported with increasing evidence and paralleled the prevalence of diabetes, obesity and cardiovascular diseases (CVDs). A dependent link was proposed between hypovitaminosis D glycemic status, insulin resistance and also the other major factors associated with type 2 diabetes leading to CVDs. Insulin resistance plays a central role in both type 2 diabetes and insulin resistance syndrome. These 2 disorders are associated with distinct etiologies including hypertension, atherogenic dyslipidemia, and significant vascular abnormalities that could lead to endothelial dysfunction. Evidence from randomised clinical trials and meta-analysis, however, yielded conflicting results. This review summarizes the role of vitamin D in the regulation of glucose homeostasis with an emphasis on insulin resistance, blood pressure, dyslipidaemia, endothelial dysfunction and related cardiovascular diseases and also underline the plausible mechanisms for all the documented effects.
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Affiliation(s)
- Y Durgarao
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Poornima A Manjrekar
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Prabha Adhikari
- Department of Internal Medicine, Yenepoya University, Mangalore, Karnataka, India
| | - M Chakrapani
- Department of Internal Medicine, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - M S Rukmini
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
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Nascimento M, Piran R, Da Costa RM, Giordani MA, Carneiro FS, Aguiar DH, Dias MC, Sugizaki MM, Luvizotto RA, Nascimento AF, Bomfim GF. Hepatic injury induced by thioacetamide causes aortic endothelial dysfunction by a cyclooxygenase-dependent mechanism. Life Sci 2018; 212:168-175. [PMID: 30292829 DOI: 10.1016/j.lfs.2018.09.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 09/22/2018] [Accepted: 09/30/2018] [Indexed: 02/07/2023]
Abstract
Liver cirrhosis is associated with a wide range of cardiovascular abnormalities including hyperdynamic circulation and cirrhotic cardiomyopathy. The pathogenic mechanisms of these cardiovascular changes are multifactorial and include vascular dysregulations. AIM The present study tested the hypothesis that the systemic vascular hyporesponsiveness in thioacetamide (TAA)-induced liver injury model is dependent on nitric oxide (NO) and cyclooxygenase (COX) derivatives. MAIN METHODS Wistar rats were treated with TAA for eight weeks to induce liver injury. KEY FINDINGS The maximal contractile response in concentration-effect curves to phenylephrine was decreased in aorta from TAA-treated rats, but no differences were found in aorta without endothelium, suggesting an endothelium-dependent mechanism in decreased contractile response. There was no difference in the contractile response with and without L-NAME (N(ω)-nitro-l-arginine methyl ester) in rats with liver injury, showing that the TAA treatment impairs NO synthesis. Pre-incubation of the aorta with indomethacin, a COX-inhibitor, normalized the reduced contractile response to phenylephrine in arteries from TAA group. Also, COX-2 and iNOS (inducible nitric oxide syntase) protein expression was increased in aorta from TAA group compared to control group. Animals submitted to TAA treatment had a reduction in systolic blood pressure. Our findings demonstrated that liver injury induced by TAA caused a decrease in aortic contractile response by a COX-dependent mechanism but not by NO release. Also, it was demonstrated an inflammatory process in the aorta of TAA-treated rats by increased expression of COX-2 and iNOS. SIGNIFICANCE Therefore, there is an essential contribution of COX-2 activation in extra-hepatic vascular dysfunction and inflammation present in cirrhosis induced by TAA.
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Affiliation(s)
- M Nascimento
- Institute of Health Science, Federal University of Mato Grosso, Sinop, MT, Brazil
| | - R Piran
- Institute of Health Science, Federal University of Mato Grosso, Sinop, MT, Brazil
| | - R M Da Costa
- Department of Physiology, Institute of Health Sciences, Federal University of Goias, Jatai, Brazil
| | - M A Giordani
- Institute of Health Science, Federal University of Mato Grosso, Sinop, MT, Brazil
| | - F S Carneiro
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - D H Aguiar
- Institute of Health Science, Federal University of Mato Grosso, Sinop, MT, Brazil
| | - M C Dias
- Institute of Health Science, Federal University of Mato Grosso, Sinop, MT, Brazil
| | - M M Sugizaki
- Institute of Health Science, Federal University of Mato Grosso, Sinop, MT, Brazil
| | - R A Luvizotto
- Institute of Health Science, Federal University of Mato Grosso, Sinop, MT, Brazil
| | - A F Nascimento
- Institute of Health Science, Federal University of Mato Grosso, Sinop, MT, Brazil
| | - G F Bomfim
- Institute of Health Science, Federal University of Mato Grosso, Sinop, MT, Brazil.
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Yang H, Bai W, Gao L, Jiang J, Tang Y, Niu Y, Lin H, Li L. Mangiferin alleviates hypertension induced by hyperuricemia via increasing nitric oxide releases. J Pharmacol Sci 2018; 137:154-161. [PMID: 29934052 DOI: 10.1016/j.jphs.2018.05.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 05/06/2018] [Accepted: 05/22/2018] [Indexed: 12/22/2022] Open
Abstract
Mangiferin, a natural glucosyl xanthone, was confirmed to be an effective uric acid (UA)- lowering agent with dual action of inhibiting production and promoting excretion of UA. In this study, we aimed to evaluate the effect of mangiferin on alleviating hypertension induced by hyperuricemia. Mangiferin (30, 60, 120 mg/kg) was administered intragastrically to hyperuricemic rats induced by gavage with potassium oxonate (750 mg/kg). Systolic blood pressure (SBP), serum levels of UA, nitric oxide (NO), C-reactionprotein (CRP) and ONOO- were measured. The mRNA and protein levels of endothelial nitric oxide synthase (eNOS), intercellular adhesion molecule-1 (ICAM-1), CRP were also analyzed. Human umbilical vein endothelial cells (HUVECs) were used in vitro studies. Administration of mangiferin significantly decreased the serum urate level and SBP at 8 weeks and last to 12 weeks. Further more, mangiferin could increase the release of NO and decrease the level of CRP in blood. In addition, mangiferin reversed the protein expression of eNOS, CRP, ICAM-1 and ONOO- in aortic segments in hyperuricemic rats. The results in vitro were consistent with the observed results in vivo. Taken together, these data suggested that mangiferin has played an important part in alleviating hypertension induced by hyperuricemia via increasing NO secretion and improving endothelial function.
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Affiliation(s)
- Hua Yang
- The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Wenwei Bai
- The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lihui Gao
- Biomedical Engineering Research Center, Kunming Medical University, Kunming, China
| | - Jun Jiang
- The Third People's Hospital of Yunnan Province, Kunming, China
| | | | - Yanfen Niu
- Biomedical Engineering Research Center, Kunming Medical University, Kunming, China
| | - Hua Lin
- Biomedical Engineering Research Center, Kunming Medical University, Kunming, China
| | - Ling Li
- Biomedical Engineering Research Center, Kunming Medical University, Kunming, China.
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Dal Lin C, Tona F, Osto E. The Heart as a Psychoneuroendocrine and Immunoregulatory Organ. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1065:225-239. [PMID: 30051388 DOI: 10.1007/978-3-319-77932-4_15] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The heart can be viewed not just as muscle pump but also as an important checkpoint for a complex network of nervous, endocrine, and immune signals. The heart is able to process neurological signals independently from the brain and to crosstalk with the endocrine and immune systems. The heart communicates with the psyche through the neuro-endocrine-immune system in a highly integrated way, in order to maintain the homeostasis of the whole body with peculiarities specific to males and females.
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Affiliation(s)
- Carlo Dal Lin
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Francesco Tona
- Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
| | - Elena Osto
- Laboratory of Translational Nutrition Biology, Federal Institute of Technology Zurich ETHZ, Zurich, Switzerland. .,Center for Molecular Cardiology, University of Zurich and University Heart Center, Cardiology, University Hospital Zurich, Zurich, Switzerland.
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Kibel A, Selthofer-Relatic K, Drenjancevic I, Bacun T, Bosnjak I, Kibel D, Gros M. Coronary microvascular dysfunction in diabetes mellitus. J Int Med Res 2017; 45:1901-1929. [PMID: 28643578 PMCID: PMC5805190 DOI: 10.1177/0300060516675504] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 09/30/2016] [Indexed: 12/16/2022] Open
Abstract
The significance, mechanisms and consequences of coronary microvascular dysfunction associated with diabetes mellitus are topics into which we have insufficient insight at this time. It is widely recognized that endothelial dysfunction that is caused by diabetes in various vascular beds contributes to a wide range of complications and exerts unfavorable effects on microcirculatory regulation. The coronary microcirculation is precisely regulated through a number of interconnected physiological processes with the purpose of matching local blood flow to myocardial metabolic demands. Dysregulation of this network might contribute to varying degrees of pathological consequences. This review discusses the most important findings regarding coronary microvascular dysfunction in diabetes from pre-clinical and clinical perspectives.
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Affiliation(s)
- Aleksandar Kibel
- Department for Heart and Vascular
Diseases, Clinic of Internal Medicine, Osijek University Hospital, Osijek,
Croatia
- Department of Physiology and Immunology,
Faculty of Medicine, University of Osijek, Croatia
| | - Kristina Selthofer-Relatic
- Department for Heart and Vascular
Diseases, Clinic of Internal Medicine, Osijek University Hospital, Osijek,
Croatia
- Department of Internal Medicine, Faculty
of Medicine, University of Osijek, Osijek, Croatia
| | - Ines Drenjancevic
- Department of Physiology and Immunology,
Faculty of Medicine, University of Osijek, Croatia
| | - Tatjana Bacun
- Department of Internal Medicine, Faculty
of Medicine, University of Osijek, Osijek, Croatia
- Department of Endocrinology, Clinic of
Internal Medicine, Osijek University Hospital, Osijek, Croatia
| | - Ivica Bosnjak
- Department for Heart and Vascular
Diseases, Clinic of Internal Medicine, Osijek University Hospital, Osijek,
Croatia
| | - Dijana Kibel
- Department of Physiology and Immunology,
Faculty of Medicine, University of Osijek, Croatia
- Department of Diagnostic and
Interventional Radiology, Osijek University Hospital, Osijek, Croatia
| | - Mario Gros
- Department of Physiology and Immunology,
Faculty of Medicine, University of Osijek, Croatia
- Department of Diagnostic and
Interventional Radiology, Osijek University Hospital, Osijek, Croatia
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de Sá FG, de Queiroz DB, Ramos-Alves FE, Santos-Rocha J, da Silva OA, Moreira HS, Leal GA, da Rocha MA, Duarte GP, Xavier FE. Hyperglycaemia in pregnant rats causes sex-related vascular dysfunction in adult offspring: role of cyclooxygenase-2. Exp Physiol 2017; 102:1019-1036. [PMID: 28556994 DOI: 10.1113/ep086132] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 05/23/2017] [Indexed: 12/12/2022]
Abstract
NEW FINDINGS What is the central question of this study? Hyperglycaemia during pregnancy induces vascular dysfunction and hypertension in male offspring. Given that female offspring from other fetal programming models are protected from the effects of fetal insult, the present study investigated whether there are sex differences in blood pressure and vascular function in hyperglycaemia-programmed offspring. What is the main finding and its importance? We demonstrated that hyperglycaemia in pregnant rats induced vascular dysfunction and hypertension only in male offspring. We found sex differences in oxidative stress and cyclooxygenase-2-derived prostanoid production that might underlie the vascular dysfunction. These differences, particularly in resistance arteries, may in part explain the absence of hypertension in female offspring born to hyperglycaemic dams. Exposure to maternal hyperglycaemia induces hypertension and vascular dysfunction in adult male offspring. Given that female offspring from several fetal programming models are protected from the effects of fetal insult, in this study we analysed possible differences relative to sex in blood pressure and vascular function in hyperglycaemia-programmed offspring. Hyperglycaemia was induced on day 7 of gestation (streptozotocin, 50 mg kg-1 ). Blood pressure, acetylcholine and phenylephrine or noradrenaline responses were analysed in the aorta and mesenteric resistance arteries of 3-, 6- and 12-month-old male and female offspring. Thromboxane A2 release was analysed with commercial kits and superoxide anion (O2- ) production by dihydroethidium-emitted fluorescence. Male but not female offspring of hyperglycaemic dams (O-DR) had higher blood pressure than control animals (O-CR). Contraction in response to phenylephrine increased and relaxation in response to acetylcholine decreased only in the aorta from 12-month-old male O-DR and not in age-matched O-CR. Contractile and vasodilator responses were preserved in both the aorta and mesenteric resistance arteries from female O-DR of all ages. Pre-incubation with tempol, superoxide dismutase, indomethacin, NS-398, furegrelate or SQ29548 decreased contraction in response to phenylephrine and potentiated relaxation in response to acetylcholine in 12-month-old male O-DR aorta. In this artery, thromboxane A2 release and O2- generation were greater in O-DR than O-CR groups. In conclusion, exposure to hyperglycaemia in utero results in sex-specific and age-dependent hypertension. The fact that vascular function is preserved in female O-DR may in part explain the absence of hypertension in this group. In contrast, the peripheral artery dysfunction associated with increased cyclooxygenase-2-derived production of vasoconstrictor prostanoids could underlie the increased blood pressure in male O-DR.
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Affiliation(s)
- Francine Gomes de Sá
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Recife, Brazil
| | | | | | - Juliana Santos-Rocha
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - Odair Alves da Silva
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - Hicla Stefany Moreira
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - Geórgia Andrade Leal
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Recife, Brazil
| | | | - Gloria Pinto Duarte
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Recife, Brazil
| | - Fabiano Elias Xavier
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Recife, Brazil
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Li X, Zhang M, Pan X, Xu Z, Sun M. “Three Hits” Hypothesis for Developmental Origins of Health and Diseases in View of Cardiovascular Abnormalities. Birth Defects Res 2017; 109:744-757. [PMID: 28509412 DOI: 10.1002/bdr2.1037] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 03/24/2017] [Indexed: 01/01/2023]
Affiliation(s)
- Xiang Li
- Institute for Fetology; First Hospital of Soochow University; Suzhou China
| | - Mengshu Zhang
- Institute for Fetology; First Hospital of Soochow University; Suzhou China
| | - Xinghua Pan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences
- Key Laboratory of Biochip Technology in Guangdong province; Southern Medical University; Guangzhou China
- Department of Genetics; Yale University School of Medicine; New Haven Connecticut
| | - Zhice Xu
- Institute for Fetology; First Hospital of Soochow University; Suzhou China
| | - Miao Sun
- Institute for Fetology; First Hospital of Soochow University; Suzhou China
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Qiu S, Cai X, Sun Z, Li L, Zuegel M, Steinacker JM, Schumann U. Heart Rate Recovery and Risk of Cardiovascular Events and All-Cause Mortality: A Meta-Analysis of Prospective Cohort Studies. J Am Heart Assoc 2017; 6:JAHA.117.005505. [PMID: 28487388 PMCID: PMC5524096 DOI: 10.1161/jaha.117.005505] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Heart rate recovery (HRR) is a noninvasive assessment of autonomic dysfunction and has been implicated with risk of cardiovascular events and all-cause mortality. However, evidence has not been systematically assessed. We performed a meta-analysis of prospective cohort studies to quantify these associations in the general population. METHODS AND RESULTS A literature search using 3 databases up to August 2016 was conducted for studies that reported hazard ratios with 95% CIs for the association between baseline HRR and outcomes of interest. The overall hazard ratios were calculated using a random-effects model. There were 9 eligible studies in total, with 5 for cardiovascular events enrolling 1061 cases from 34 267 participants, and 9 for all-cause mortality enrolling 2082 cases from 41 600 participants. The pooled hazard ratios associated with attenuated HRR versus fast HRR that served as the referent were 1.69 (95% CI 1.05-2.71) for cardiovascular events and 1.68 (95% CI 1.51-1.88) for all-cause mortality. For every 10 beats per minute decrements in HRR, the hazard ratios were 1.13 (95% CI 1.05-1.21) and 1.09 (95% CI 1.01-1.19), respectively. Further analyses suggested that the associations observed between attenuated HRR and risk of fatal cardiovascular events and all-cause mortality were independent of traditional metabolic factors for cardiovascular disease (all P<0.05). CONCLUSIONS Attenuated HRR is associated with increased risk of cardiovascular events and all-cause mortality, which supports the recommendation of recording HRR for risk assessment in clinical practice as a routine.
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Affiliation(s)
- Shanhu Qiu
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, School of Medicine, Southeast University, Nanjing, China
| | - Xue Cai
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, School of Medicine, Southeast University, Nanjing, China
| | - Zilin Sun
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, School of Medicine, Southeast University, Nanjing, China
| | - Ling Li
- Department of Endocrinology, Zhongda Hospital, Institute of Diabetes, School of Medicine, Southeast University, Nanjing, China
| | - Martina Zuegel
- Division of Sports- and Rehabilitation Medicine, Department of Internal Medicine II, University of Ulm, Germany
| | - Juergen Michael Steinacker
- Division of Sports- and Rehabilitation Medicine, Department of Internal Medicine II, University of Ulm, Germany
| | - Uwe Schumann
- Division of Sports- and Rehabilitation Medicine, Department of Internal Medicine II, University of Ulm, Germany
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Rizzetti DA, Torres JGD, Escobar AG, da Silva TM, Moraes PZ, Hernanz R, Peçanha FM, Castro MM, Vassallo DV, Salaices M, Alonso MJ, Wiggers GA. The cessation of the long-term exposure to low doses of mercury ameliorates the increase in systolic blood pressure and vascular damage in rats. ENVIRONMENTAL RESEARCH 2017; 155:182-192. [PMID: 28222365 DOI: 10.1016/j.envres.2017.02.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 02/15/2017] [Accepted: 02/16/2017] [Indexed: 06/06/2023]
Abstract
This study aimed to verify whether a prolonged exposure to low-level mercury promotes haemodynamic disorders and studied the reversibility of this vascular damage. Rats were divided into seven groups: three control groups received saline solution (im) for 30, 60 or 90 days; two groups received HgCl2 (im, first dose, 4.6μg/kg, subsequent doses 0.07μg/kg/day) for 30 or 60 days; two groups received HgCl2 for 30 or 60 days (im, same doses) followed by a 30-day washout period. Systolic blood pressure (SBP) was measured, along with analysis of vascular response to acetylcholine (ACh) and phenylephrine (Phe) in the absence and presence of endothelium, a nitric oxide (NO) synthase inhibitor, an NADPH oxidase inhibitor, superoxide dismutase, a non-selective cyclooxygenase (COX) inhibitor and an AT1 receptor blocker. Reactive oxygen species (ROS) levels and antioxidant power were measured in plasma. HgCl2 exposure for 30 and 60 days: a) reduced the endothelium-dependent relaxation; b) increased the Phe-induced contraction and the contribution of ROS, COX-derived vasoconstrictor prostanoids and angiotensin II acting on AT1 receptors to this response while the NO participation was reduced; c) increased the oxidative stress in plasma; d) increased the SBP only after 60 days of exposure. After the cessation of HgCl2 exposure, SBP, endothelium-dependent relaxation, Phe-induced contraction and the oxidative stress were normalised, despite the persistence of the increased COX-derived prostanoids. These results demonstrated that long-term HgCl2 exposure increases SBP as a consequence of vascular dysfunction; however, after HgCl2 removal from the environment the vascular function ameliorates.
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Affiliation(s)
| | | | - Alyne Goulart Escobar
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, Uruguaiana, RS, Brazil
| | - Taiz Martins da Silva
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, Uruguaiana, RS, Brazil; Department of Basic Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain; Bioactivity and Food Analysis Laboratory, Instituto de Investigación en Ciencias de la Alimentación, Madrid, Spain; Department of Physiological Sciences, Universidade Federal do Espírito Santo, Vitória, ES, Brazil; Department of Pharmacology, Universidad Autónoma de Madrid, Madrid, Spain
| | - Paola Zambelli Moraes
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, Uruguaiana, RS, Brazil
| | - Raquel Hernanz
- Department of Basic Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain
| | - Franck Maciel Peçanha
- Postgraduate Program in Biochemistry, Universidade Federal do Pampa, Uruguaiana, RS, Brazil
| | - Marta Miguel Castro
- Bioactivity and Food Analysis Laboratory, Instituto de Investigación en Ciencias de la Alimentación, Madrid, Spain
| | - Dalton Valentim Vassallo
- Department of Physiological Sciences, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - Mercedes Salaices
- Department of Pharmacology, Universidad Autónoma de Madrid, Madrid, Spain
| | - Maria Jesús Alonso
- Department of Basic Health Sciences, Universidad Rey Juan Carlos, Alcorcón, Spain
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Obesity Induces Artery-Specific Alterations: Evaluation of Vascular Function and Inflammatory and Smooth Muscle Phenotypic Markers. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5038602. [PMID: 28466012 PMCID: PMC5390568 DOI: 10.1155/2017/5038602] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 03/19/2017] [Indexed: 02/06/2023]
Abstract
Vascular alterations are expected to occur in obese individuals but the impact of obesity could be different depending on the artery type. We aimed to evaluate the obesity effects on the relaxing and contractile responses and inflammatory and smooth muscle (SM) phenotypic markers in two vascular beds. Obesity was induced in C57Bl/6 mice by 16-week high-fat diet and vascular reactivity, mRNA expression of inflammatory and SM phenotypic markers, and collagen deposition were evaluated in small mesenteric arteries (SMA) and thoracic aorta (TA). Endothelium-dependent relaxation in SMA and TA was not modified by obesity. In contrast, contraction induced by depolarization and contractile agonists was reduced in SMA, whereas only contraction induced by adrenergic agonist was reduced in TA of obese mice. Obesity increased the mRNA expression of pro- and anti-inflammatory cytokines in SMA and TA. The expression of genes necessary for maintaining contractile ability was increased by obesity, but the increase was more pronounced in TA. Collagen deposition was increased in SMA, but not in TA, of obese mice. Although the endothelial function was still preserved, the SM of the two artery types was impaired by obesity, but the impairment was higher in SMA, which could be associated with SM phenotypic changes.
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Silva JF, Correa IC, Diniz TF, Lima PM, Santos RL, Cortes SF, Coimbra CC, Lemos VS. Obesity, Inflammation, and Exercise Training: Relative Contribution of iNOS and eNOS in the Modulation of Vascular Function in the Mouse Aorta. Front Physiol 2016; 7:386. [PMID: 27656148 PMCID: PMC5013134 DOI: 10.3389/fphys.2016.00386] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 08/22/2016] [Indexed: 12/27/2022] Open
Abstract
Background: The understanding of obsesity-related vascular dysfunction remains controversial mainly because of the diseases associated with vascular injury. Exercise training is known to prevent vascular dysfunction. Using an obesity model without comorbidities, we aimed at investigating the underlying mechanism of vascular dysfunction and how exercise interferes with this process. Methods: High-sugar diet was used to induce obesity in mice. Exercise training was performed 5 days/week. Body weight, energy intake, and adipose tissues were assessed; blood metabolic and hormonal parameters were determined; and serum TNFα was measured. Blood pressure and heart rate were assessed by plethysmography. Changes in aortic isometric tension were recorded on myograph. Western blot was used to analyze protein expression. Nitric oxide (NO) was evaluated using fluorescence microscopy. Antisense oligodeoxynucleotides were used for inducible nitric oxide synthase isoform (iNOS) knockdown. Results: Body weight, fat mass, total cholesterol, low-density lipoprotein cholesterol fraction, insulin, and leptin were higher in the sedentary obese group (SD) than in the sedentary control animals (SS). Exercise training prevented these changes. No difference in glucose tolerance, insulin sensitivity, blood pressure, and heart rate was found. Decreased vascular relaxation and reduced endothelial nitric oxide synthase (eNOS) functioning in the SD group were prevented by exercise. Contractile response to phenylephrine was decreased in the aortas of the wild SD mice, compared with that of the SS group; however, no alteration was noted in the SD iNOS−/− animals. The decreased contractility was endothelium-dependent, and was reverted by iNOS inhibition or iNOS silencing. The aortas from the SD group showed increased basal NO production, serum TNFα, TNF receptor-1, and phospho-IκB. Exercise training attenuated iNOS-dependent reduction in contractile response in high-sugar diet–fed animals, decreased iNOS expression, and increased eNOS expression. Conclusion: Obesity caused endothelium dysfunction, TNFα, and iNOS pathway up-regulation, decreasing vascular contractility in the obese animals. Exercise training was an effective therapy to control iNOS-dependent NO production and to preserve endothelial function in obese individuals.
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Affiliation(s)
- Josiane F Silva
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Izabella C Correa
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Thiago F Diniz
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Paulo M Lima
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Roger L Santos
- Department of Physiological Science, Universidade Federal do Espírito Santo Espírito Santo, Brazil
| | - Steyner F Cortes
- Department of Pharmacology, Institute of Biological Sciences, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Cândido C Coimbra
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
| | - Virginia S Lemos
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais Belo Horizonte, Brazil
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Dong Y, Sun Q, Liu T, Wang H, Jiao K, Xu J, Liu X, Liu H, Wang W. Nitrative Stress Participates in Endothelial Progenitor Cell Injury in Hyperhomocysteinemia. PLoS One 2016; 11:e0158672. [PMID: 27391949 PMCID: PMC4938535 DOI: 10.1371/journal.pone.0158672] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 06/20/2016] [Indexed: 01/01/2023] Open
Abstract
In order to investigate the role of nitrative stress in vascular endothelial injury in hyperhomocysteinemia (HHcy), thirty healthy adult female Wistar rats were randomly divided into three groups: control, hyperhomocysteinemia model, and hyperhomocysteinemia with FeTMPyP (peroxynitrite scavenger) treatment. The endothelium-dependent dilatation of thoracic aorta in vitro was determined by response to acetylcholine (ACh). The histological changes in endothelium were assessed by HE staining and scanning electron microscopy (SEM). The expression of 3-nitrotyrosine (NT) in thoracic aorta was demonstrated by immunohistochemistry and immunofluorescence, and the number of circulating endothelial progenitor cells (EPCs) was quantified by flow cytometry. Hyperhomocysteinemia caused significant endothelial injury and dysfunction including vasodilative and histologic changes, associated with higher expression of NT in thoracic aorta. FeTMPyP treatment reversed these injuries significantly. Further, the effect of nitrative stress on cultured EPCs in vitro was investigated by administering peroxynitrite donor (3-morpholino-sydnonimine, SIN-1) and peroxynitrite scavenger (FeTMPyP). The roles of nitrative stress on cell viability, necrosis and apoptosis were evaluated with 3-(4,5-dimethylthiazol)-2,5-diphenyl tetrazolium (MTT) assay, lactate dehydrogenase (LDH) release assay and terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay, respectively. Also, the phospho-eNOS expression and tube formation in Matrigel of cultured EPCs was detected. Our data showed that the survival of EPCs was much lower in SIN-1 group than in vehicle group, both the apoptosis and necrosis of EPCs were much more severe, and the p-eNOS expression and tube formation in Matrigel were obviously declined. Subsequent pretreatment with FeTMPyP reversed these changes. Further, pretreatment with FeTMPyP reversed homocysteine-induced EPC injury. In conclusion, this study indicates that nitrative stress plays a role in vascular endothelial injury in hyperhomocysteinemia, as well as induces endothelial progenitor cell injury directly.
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Affiliation(s)
- Yu Dong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Qi Sun
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Teng Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Huanyuan Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Kun Jiao
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Jiahui Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Xin Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Huirong Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
| | - Wen Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, Beijing, China
- Beijing Key Laboratory of Metabolic Disorders Related Cardiovascular Diseases, Capital Medical University, Beijing, China
- * E-mail:
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Simões FV, de Batista PR, Botelho T, Ribeiro-Júnior RF, Padilha AS, Vassallo DV. Treatment with high dose of atorvastatin reduces vascular injury in diabetic rats. Pharmacol Rep 2016; 68:865-73. [PMID: 27351941 DOI: 10.1016/j.pharep.2016.04.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 04/28/2016] [Accepted: 04/29/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Previous reports showed conflicting results regarding the treatment effects of statin on Diabetes mellitus (DM). We investigated how treatment with high dose of atorvastatin affects the impaired vascular function in diabetic rats. METHODS Atorvastatin (80mg/kg/day, oral gavage, 4 weeks) or its vehicle was administered to male control or streptozotocin (STZ)-induced diabetic rats. Aortic segments were used to investigate the vascular reactivity, protein expression of cyclooxygenase-2 (COX-2) and nicotinamide adenine dinucleotide phosphate oxidase (NADPH oxidase) 1 (NOX1) and superoxide anions levels. RESULTS Atorvastatin treatment did not affect glycemia levels. In diabetic rats, the vascular reactivity to phenylephrine increased compared with controls and the atorvastatin treatment reduced this response. Removal of the endothelium increased the response to phenylephrine in control rats, but not in the diabetic group. Atorvastatin increased the endothelial modulation in diabetic rats. L-NAME (100μM) increased the reactivity in all groups, but this effect was greater in atorvastatin-treated diabetic rats. Indomethacin (10μM) and NS398 (1μM) decreased the contractile response in diabetic rats and atorvastatin reversed these effects, without changing COX-2 expression. Apocynin (30μM) decreased the phenylephrine response in diabetic rats, which also showed increased NOX1 and superoxide anions; these effects were prevented by atorvastatin treatment. CONCLUSIONS The results suggest that treatment with high dose of atorvastatin, independent of glycemia, improves endothelial function in aortas from diabetic rats by reducing the constrictor prostanoids derived from COX-2 and by reducing the oxidative stress by NADPH oxidase, as well as a possible increasing of nitric oxide participation.
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Affiliation(s)
- Fabiana Vieira Simões
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil.
| | - Priscila Rossi de Batista
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil.
| | - Tatiani Botelho
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil.
| | | | - Alessandra Simão Padilha
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil.
| | - Dalton Valentim Vassallo
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil; Escola Superior de Ciências da Santa Casa de Misericórdia de Vitória (EMESCAM), Vitória, ES, Brazil.
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The Impact of Remote Ischemic Preconditioning on Arterial Stiffness and Heart Rate Variability in Patients with Angina Pectoris. J Clin Med 2016; 5:jcm5070060. [PMID: 27348009 PMCID: PMC4961991 DOI: 10.3390/jcm5070060] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 06/08/2016] [Accepted: 06/17/2016] [Indexed: 02/07/2023] Open
Abstract
Remote ischemic preconditioning (RIPC) is the set of ischemia episodes that protects against subsequent periods of prolonged ischemia through the cascade of adaptive responses; however, the mechanisms of RIPC are not entirely clear. Here, we aimed to study the impact of RIPC in patients with stable angina pectoris and compare it with healthy individuals with respect to arterial stiffness and heart rate variability. In the randomized, sham-controlled, crossover blind design study, a group of 30 coronary heart disease (CHD) patients (63.9 ± 1.6 years) with stable angina pectoris NYHA II-III and a control group of 20 healthy individuals (58.2 ± 2.49) were both randomly allocated for remote RIPC or sham RIPC. Arterial stiffness, pulse wave velocity (Spygmacor, Australia), and heart rate variability (HRV) were recorded before and after the procedure followed by the crossover examination. In the group of healthy individuals, RIPC showed virtually no impact on the cardiovascular parameters, while, in the CHD group, the systolic and central systolic blood pressure, central pulse pressure, and augmentation decreased, and total power of HRV improved. We conclude that ischemic preconditioning reduces not only systolic blood pressure, but also reduces central systolic blood pressure and improves arterial compliance and heart rate modulation reserve, which may be associated with the antianginal effect of preconditioning.
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Ošiņa K, Rostoka E, Isajevs S, Sokolovska J, Sjakste T, Sjakste N. Effects of an Antimutagenic 1,4-Dihydropyridine AV-153 on Expression of Nitric Oxide Synthases and DNA Repair-related Enzymes and Genes in Kidneys of Rats with a Streptozotocin Model of Diabetes Mellitus. Basic Clin Pharmacol Toxicol 2016; 119:458-463. [PMID: 27163882 DOI: 10.1111/bcpt.12617] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 04/25/2016] [Indexed: 12/19/2022]
Abstract
Development of complications of diabetes mellitus (DM), including diabetic nephropathy, is a complex multi-stage process, dependent on many factors including the modification of nitric oxide (NO) production and an impaired DNA repair. The goal of this work was to study in vivo effects of 1,4-dihydropyridine AV-153, known as antimutagen and DNA binder, on the expression of several genes and proteins involved in NO metabolism and DNA repair in the kidneys of rats with a streptozotocin (STZ)-induced model of DM. Transcription intensity was monitored by means of real-time RT-PCR and the expression of proteins by immunohistochemistry. Development of DM significantly induced PARP1 protein expression, while AV-153 (0.5 mg/kg) administration decreased it. AV-153 increased the expression of Parp1 gene in the kidneys of both intact and diabetic animals. Expression of H2afx mRNA and γH2AX histone protein, a marker of DNA breakage, was not changed in diabetic animals, but AV-153 up-regulated the expression of the gene without any impact on the protein expression. Development of DM was followed by a significant increase in iNOS enzyme expression, while AV-153 down-regulated the enzyme expression up to normal levels. iNos gene expression was also found to be increased in diabetic animals, but unlike the protein, the expression of mRNA was found to be enhanced by AV-153 administration. Expression of both eNOS protein and eNos gene in the kidneys was down-regulated, and the administration of AV-153 normalized the expression level. The effects of the compound in the kidneys of diabetic animals appear to be beneficial, as a trend for the normalization of expression of NO synthases is observed.
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Affiliation(s)
- Kristīne Ošiņa
- Latvian Institute of Organic Synthesis, Riga, Latvia. .,Genomics and Bioinformatics, Institute of Biology of the University of Latvia, Salaspils, Latvia.
| | - Evita Rostoka
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Sergejs Isajevs
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Jelizaveta Sokolovska
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Medicine, University of Latvia, Riga, Latvia
| | - Tatjana Sjakste
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Genomics and Bioinformatics, Institute of Biology of the University of Latvia, Salaspils, Latvia
| | - Nikolajs Sjakste
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Faculty of Medicine, University of Latvia, Riga, Latvia
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Derkach KV, Kuznetsova LA, Sharova TS, Ignat’eva PA, Bondareva VM, Shpakov AO. The effect of prolonged metformin treatment on the activity of the adenylyl cyclase system and NO-synthase in the brain and myocardium of obese rats. ACTA ACUST UNITED AC 2015. [DOI: 10.1134/s1990519x1505003x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Hui Z, Zhou X, Li R. Effect of 3,4-dihydroxyacetophenone on endothelial dysfunction in obese rats. PHARMACEUTICAL BIOLOGY 2015; 53:1149-1154. [PMID: 25693637 DOI: 10.3109/13880209.2014.962060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
CONTEXT 3,4-Dihydroxyacetophenone (DHAP) has been reported to possess cardiovascular pharmacological effects. OBJECTIVE This study was designed to determine whether DHAP could improve endothelial function in obese rats. MATERIALS AND METHODS Wistar rats were randomly divided into control, obesity, and DHAP groups and fed a normal, high-fat, and high-fat plus DHAP (10 mg kg(-1) d(-1)) diet, respectively, for 8 weeks. Endothelial-dependent vasodilatation was assessed. Endothelial nitric oxide synthase (eNOS) activity and nitric oxide (NO) production in endothelial cells were determined. Nuclear transcription factor kappa B (NF-κB) expression and superoxide production in aorta were evaluated. RESULTS DHAP treatment significantly decreased plasma triglycerides (0.94 ± 0.31 mmol/l versus 1.36 ± 0.29 mmol/l, p < 0.05) and free fatty acids (0.53 ± 0.15 mmol/l versus 0.99 ± 0.24 mmol/l, p < 0.05), reduced serum tumor necrosis factor α (35.56 ± 9.28 pg/ml versus 68.3 ± 10.24 pg/ml, p < 0.05) and malondialdehyde (2.94 ± 0.58 pg/ml versus 6.45 ± 0.70 pg/ml, p < 0.05), and increased serum adiponectin levels (164.5 ± 34.5 μg/l versus 84.5 ± 20.4 μg/l, p < 0.05). DHAP enhanced endothelial-dependent vasodilatation and improved endothelial function in obese rats (p < 0.05). eNOS activity and NO production in endothelial cells significantly decreased and NF-κB activation and superoxide production in aorta significantly increased in obese rats compared with the control group (p < 0.05). However, DHAP treatment significantly up-regulated the eNOS-NO pathway and decreased NF-κB activation and superoxide production (p < 0.05). CONCLUSION DHAP improved endothelial function in obese rats. This beneficial effect may be associated with up-regulation of the eNOS-NO pathway by improving lipid metabolism and reducing oxidative stress and inflammation activity.
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Savić V, Janić M, Lunder M, Kanc K, Janež A, Eržen B, Šabovič M. Long-term improvement of arterial wall characteristics in patients with diabetes mellitus type 1 using cyclic, intermittent treatment with a low-dose fluvastatin and valsartan combination. Exp Ther Med 2015; 10:1207-1211. [PMID: 26622466 DOI: 10.3892/etm.2015.2622] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 06/01/2015] [Indexed: 01/22/2023] Open
Abstract
Improvement of arterial wall (AW) characteristics decreases cardiovascular risk. In a previous study, it was observed that AW characteristics in patients with diabetes mellitus type 1 are significantly improved by short-term treatment with a low-dose combination of fluvastatin and valsartan. Additionally, a unique phenomenon of prolonged effect after treatment discontinuation was suggested. The present study tested whether repeated treatm ent after a certain period results in the same beneficial effect, th ereby advancing the hypothesis that cyclic treatment can provide a long-term improvement of AW characteristics. A total of 44 patients with diabetes mellitus type 1 that participated in the previous study were recruited. Six months after the discontinuation of the initial treatment, the same treatment with a low-dose fluvastatin (10 mg daily) and valsartan (20 mg daily) combination (n=22) or placebo (n=22) was repeated. Brachial artery flow-mediated dilation (FMD), pulse wave velocity (PWV) and carotid artery β-stiffness were measured. It was found that the beneficial effect achieved with an initial 1-month treatment was completely regained following treatment repetition: FMD improved by 50.9% (P<0.01), PWV by 5.7% (P<0.001) and β-stiffness by 9.9% (P<0.001). In addition, a gradual decline of the obtained effects was observed, reaching the level of 9.6% for FM D, 6.3% for PWV and 9.5% for β-stiffness 6 months after treatm ent discontinuation. It was observed that repetition of treatment was similarly effective as the initial intervention. The benefits achieved by treatment steadily declined with time. Combining these findings, cyclic intermittent treatment with a low-dose fluvastatin and valsartan combination is proposed as a new cardiovascular preventive strategy in patients with DM1.
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Affiliation(s)
- Vedran Savić
- Department of Vascular Diseases, Ljubljana University Medical Centre, Ljubljana SI-1000, Slovenia
| | - Miodrag Janić
- Department of Vascular Diseases, Ljubljana University Medical Centre, Ljubljana SI-1000, Slovenia
| | - Mojca Lunder
- Department of Vascular Diseases, Ljubljana University Medical Centre, Ljubljana SI-1000, Slovenia
| | - Karin Kanc
- Diabetes & Me, Private Diabetes Centre, Ljubljana SI-1000, Slovenia
| | - Andrej Janež
- Department of Endocrinology, Diabetes and Metabolic Diseases, Ljubljana University Medical Centre, Ljubljana SI-1000, Slovenia
| | - Barbara Eržen
- Department of Vascular Diseases, Ljubljana University Medical Centre, Ljubljana SI-1000, Slovenia
| | - Mišo Šabovič
- Department of Vascular Diseases, Ljubljana University Medical Centre, Ljubljana SI-1000, Slovenia
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Peixoto-Neves D, Wang Q, Leal-Cardoso JH, Rossoni LV, Jaggar JH. Eugenol dilates mesenteric arteries and reduces systemic BP by activating endothelial cell TRPV4 channels. Br J Pharmacol 2015; 172:3484-94. [PMID: 25832173 DOI: 10.1111/bph.13156] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Revised: 01/27/2015] [Accepted: 03/15/2015] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Eugenol, a vanilloid molecule found in some dietary plants, relaxes vasculature in part via an endothelium-dependent process; however, the mechanisms involved are unclear. Here, we investigated the endothelial cell-mediated mechanism by which eugenol modulates rat mesenteric artery contractility and systemic BP. EXPERIMENTAL APPROACH The isometric tension of rat mesenteric arteries (size 200-300 μm) was measured using wire myography; non-selective cation currents (ICat ) were recorded in endothelial cells using patch clamp electrophysiology. Mean arterial pressure (MAP) and heart rate (HR) were determined in anaesthetized rats. KEY RESULTS Eugenol relaxed endothelium-intact arteries in a concentration-dependent manner and this effect was attenuated by endothelium denudation. L-NAME, a NOS inhibitor, a combination of TRAM-34 and apamin, selective blockers of intermediate and small conductance Ca(2+) -activated K(+) channels, respectively, and HC-067047, a TRPV4 channel inhibitor, but not indomethacin, a COX inhibitor, reduced eugenol-induced relaxation in endothelium-intact arteries. Eugenol activated HC-067047-sensitive ICat in mesenteric artery endothelial cells. Short interfering RNA (siRNA)-mediated TRPV4 knockdown abolished eugenol-induced ICat activation. An i.v. injection of eugenol caused an immediate, transient reduction in both MAP and HR, which was followed by prolonged, sustained hypotension in anaesthetized rats. This sustained hypotension was blocked by HC-067047. CONCLUSIONS AND IMPLICATIONS Eugenol activates TRPV4 channels in mesenteric artery endothelial cells, leading to vasorelaxation, and reduces systemic BP in vivo. Eugenol may be therapeutically useful as an antihypertensive agent and is a viable molecular candidate from which to develop second-generation TRPV4 channel activators that reduce BP.
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Affiliation(s)
- Dieniffer Peixoto-Neves
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN, USA.,Laboratório de Eletrofisiologia, Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Fortaleza, Ceará, Brazil
| | - Qian Wang
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Jose H Leal-Cardoso
- Laboratório de Eletrofisiologia, Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Fortaleza, Ceará, Brazil
| | - Luciana V Rossoni
- Laboratório de Fisiologia Vascular, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, Brazil
| | - Jonathan H Jaggar
- Department of Physiology, University of Tennessee Health Science Center, Memphis, TN, USA
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44
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Braga VAVN, Couto GK, Lazzarin MC, Rossoni LV, Medeiros A. Aerobic Exercise Training Prevents the Onset of Endothelial Dysfunction via Increased Nitric Oxide Bioavailability and Reduced Reactive Oxygen Species in an Experimental Model of Menopause. PLoS One 2015; 10:e0125388. [PMID: 25923465 PMCID: PMC4414603 DOI: 10.1371/journal.pone.0125388] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 03/24/2015] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE Previous studies have shown that estrogen deficiency, arising in postmenopause, promotes endothelial dysfunction. This study evaluated the effects of aerobic exercise training on endothelial dependent vasodilation of aorta in ovariectomized rats, specifically investigating the role of nitric oxide (NO) and reactive oxygen species (ROS). METHODS Female Wistar rats ovariectomized (OVX - n=20) or with intact ovary (SHAM - n=20) remained sedentary (OVX and SHAM) or performed aerobic exercise training on a treadmill 5 times a week for a period of 8 weeks (OVX-TRA and SHAM-TRA). In the thoracic aorta the endothelium-dependent and -independent vasodilation was assessed by acetylcholine (ACh) and sodium nitroprusside (SNP), respectively. Certain aortic rings were incubated with L-NAME to assess the NO modulation on the ACh-induced vasodilation. The fluorescence to dihydroethidium in aortic slices and plasma nitrite/nitrate concentrations were measured to evaluate ROS and NO bioavailability, respectively. RESULTS ACh-induced vasodilation was reduced in OVX rats as compared SHAM (Rmax: SHAM: 86±3.3 vs. OVX: 57±3.0%, p<0.01). Training prevented this response in OVX-TRA (Rmax: OVX-TRA: 88±2.0%, p<0.01), while did not change it in SHAM-TRA (Rmax: SHAM-TRA: 80±2.2%, p<0.01). The L-NAME incubation abolished the differences in ACh-induced relaxation among groups. SNP-induced vasodilation was not different among groups. OVX reduced nitrite/nitrate plasma concentrations and increased ROS in aortic slices, training as effective to restore these parameters to the SHAM levels. CONCLUSIONS Exercise training, even in estrogen deficiency conditions, is able to improve endothelial dependent vasodilation in rat aorta via enhanced NO bioavailability and reduced ROS levels.
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Affiliation(s)
| | - Gisele K. Couto
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
| | - Mariana C. Lazzarin
- Department of Biosciences, Federal University of Sao Paulo, Santos, Sao Paulo, Brazil
| | - Luciana V. Rossoni
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, Sao Paulo, Brazil
| | - Alessandra Medeiros
- Department of Biosciences, Federal University of Sao Paulo, Santos, Sao Paulo, Brazil
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45
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Liang Y, Li YP, He F, Liu XQ, Zhang JY. Long-term, regular remote ischemic preconditioning improves endothelial function in patients with coronary heart disease. ACTA ACUST UNITED AC 2015; 48:568-76. [PMID: 25923462 PMCID: PMC4470317 DOI: 10.1590/1414-431x20144452] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 12/19/2014] [Indexed: 02/14/2023]
Abstract
Remote ischemic preconditioning (RIPre) can prevent myocardial injury. The purpose of
this study was to assess the beneficial effects of long-term regular RIPre on human
arteries. Forty patients scheduled for coronary artery bypass graft (CABG) surgery
were assigned randomly to a RIPre group (n=20) or coronary heart disease (CHD) group
(n=20). Twenty patients scheduled for mastectomy were enrolled as a control group.
RIPre was achieved by occluding arterial blood flow 5 min with a mercury
sphygmomanometer followed by a 5-min reperfusion period, and this was repeated 4
times. The RIPre procedure was repeated 3 times a day for 20 days. In all patients,
arterial fragments discarded during surgery were collected to evaluate endothelial
function by flow-mediated dilation (FMD), CD34+ monocyte count, and
endothelial nitric oxide synthase (eNOS expression). Phosphorylation levels of STAT-3
and Akt were also assayed to explore the underlying mechanisms. Compared with the CHD
group, long-term regular RIPre significantly improved FMD after 20 days (8.5±2.4
vs 4.9±4.2%, P<0.05) and significantly reduced troponin after
CABG surgery (0.72±0.31 and 1.64±0.19, P<0.05). RIPre activated STAT-3 and
increased CD34+ endothelial progenitor cell counts found in arteries.
Long-term, regular RIPre improved endothelial function in patients with CHD, possibly
due to STAT-3 activation, and this may have led to an increase in endothelial
progenitor cells.
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Affiliation(s)
- Y Liang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Y P Li
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - F He
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - X Q Liu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - J Y Zhang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Lamas AZ, Caliman IF, Dalpiaz PLM, de Melo AF, Abreu GR, Lemos EM, Gouvea SA, Bissoli NS. Comparative effects of estrogen, raloxifene and tamoxifen on endothelial dysfunction, inflammatory markers and oxidative stress in ovariectomized rats. Life Sci 2015; 124:101-9. [PMID: 25623855 DOI: 10.1016/j.lfs.2015.01.004] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 12/15/2014] [Accepted: 01/08/2015] [Indexed: 12/24/2022]
Abstract
AIM Endothelial dysfunction is considered a premature indication of atherosclerosis and vessel damage and is present in the postmenopausal period. This study compares the influence of estrogen, raloxifene and tamoxifen on factors that affect endothelial function in ovariectomized (OVX) rats. MAIN METHODS The rats were divided into: SHAM; OVX; OVX+estrogen (0.5 μg/kg/day); OVX+raloxifene (2 mg/kg/day) and OVX+tamoxifen (1 mg/kg/day) groups. The acetylcholine vasorelaxation response was evaluated in the mesenteric vascular bed. The vascular oxidative stress and serum inflammatory cytokine levels were monitored, and analyses of eNOS and iNOS were performed. KEY FINDINGS The acetylcholine-induced responses obtained in the OVX were lower than those obtained in the SHAM, and all treatments restored this response. l-NAME reduced and equalized the acetylcholine-induced response in all groups. The attenuation of the acetylcholine-induced responses by aminoguanidine was greater in the OVX. Endothelial dysfunction in OVX was associated with oxidative stress and an increase in iNOS and decrease in eNOS expression. Except for the production of reactive oxidative species (ROS) in the OVX+tamoxifen, treatments improved the nitric oxide component of the relaxation response and normalized both the oxidative stress and the expression of those signaling pathway enzymes. Serum levels of TNF-α and IL-6 were increased in OVX, and treatments normalized these levels. SIGNIFICANCE Raloxifene and tamoxifen have similar anti-inflammatory effects that may be important in improving vascular dysfunction. Tamoxifen did not affect the ROS but improved endothelial dysfunction. The protective effect on endothelial function by these treatments provides evidence of their potential cardiovascular benefits in the postmenopausal period.
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Affiliation(s)
- Aline Zandonadi Lamas
- Department of Physiological Sciences, Center for Health Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Izabela Facco Caliman
- Department of Physiological Sciences, Center for Health Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Polyana Lima Meireles Dalpiaz
- Department of Physiological Sciences, Center for Health Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Antônio Ferreira de Melo
- Department of Physiological Sciences, Center for Health Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Glaucia Rodrigues Abreu
- Department of Physiological Sciences, Center for Health Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Elenice Moreira Lemos
- Nucleus of Infectious Diseases, Center for Health Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Sonia Alves Gouvea
- Department of Physiological Sciences, Center for Health Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil
| | - Nazaré Souza Bissoli
- Department of Physiological Sciences, Center for Health Sciences, Federal University of Espirito Santo, Vitoria, ES, Brazil.
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47
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Effect of 3,4-Dihydroxyacetophenone on Endothelial Dysfunction in Streptozotocin-induced Rats With Type 2 Diabetes. J Cardiovasc Pharmacol 2015; 65:22-7. [DOI: 10.1097/fjc.0000000000000158] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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48
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Liu R, Ding L, Yu MH, Wang HQ, Li WC, Cao Z, Zhang P, Yao BC, Tang J, Ke Q, Huang TZ. Effects of dihydrotestosterone on adhesion and proliferation via PI3-K/Akt signaling in endothelial progenitor cells. Endocrine 2014; 46:634-43. [PMID: 24190051 DOI: 10.1007/s12020-013-0081-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 10/07/2013] [Indexed: 12/30/2022]
Abstract
The protective effects of male hormones on the cardiovascular system are still in dispute. There is now ample evidence that testosterone level is negatively correlated to the incidence and mortality of cardiovascular disease in men. Endothelial progenitor cells (EPCs) play a vital role in endothelial healing and vascular integrity, which are useful for promoting cardiovascular health. In this study, we investigated the effects of dihydrotestosterone (DHT), a non-aromatizable androgen, on human EPC function and the activation of the phosphatidylinositol-3-kinase (PI3-K)/Akt pathway in vitro. EPCs were incubated with a series of concentrations (1, 10, or 100 nmol/L in DMSO) of DHT for 24 h or with 10 nmol/L DHT for different time (6, 12, 24, 48 h). EPC adhesion and proliferation and the activation of Akt were assayed by cell counting, 5-ethynyl-2'-deoxyuridine incorporation assay, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay, and Western blot analysis. Our data demonstrated that DHT significantly increased the proliferative activity and adhesive ability of EPCs in a dose- and time-dependent manner, maximum at 10 nmol/L, 24 h (p < 0.05). Western blot analysis revealed that DHT promoted the phosphorylation of Akt, and the effects of different concentrations of DHT on Akt phosphorylation were consistent with those on EPC proliferation and adhesion (p < 0.05). However, the enhancing effects of DHT on EPCs decreased with administration of the pharmacological PI3-K blocker LY294002 (p < 0.05). In conclusion, DHT can modulate EPC proliferation and adhesion and the PI3-K/Akt pathway plays an important role in this process.
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Affiliation(s)
- Rui Liu
- Department of Anatomy, Hubei University of Medicine, 30 People's South Road, Shiyan, 442000, Hubei, China
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Denture-related stomatitis is associated with endothelial dysfunction. BIOMED RESEARCH INTERNATIONAL 2014; 2014:474016. [PMID: 25045683 PMCID: PMC4090512 DOI: 10.1155/2014/474016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 05/28/2014] [Accepted: 05/29/2014] [Indexed: 01/17/2023]
Abstract
Oral inflammation, such as periodontitis, can lead to endothelial dysfunction, accelerated atherosclerosis, and vascular dysfunction. The relationship between vascular dysfunction and other common forms of oral infections such as denture-related stomatitis (DRS) is unknown. Similar risk factors predispose to both conditions including smoking, diabetes, age, and obesity. Accordingly, we aimed to investigate endothelial function and major vascular disease risk factors in 44 consecutive patients with dentures with clinical and microbiological features of DRS (n = 20) and without DRS (n = 24). While there was a tendency for higher occurrence of diabetes and smoking, groups did not differ significantly in respect to major vascular disease risk factors. Groups did not differ in main ambulatory blood pressure, total cholesterol, or even CRP. Importantly, flow mediated dilatation (FMD) was significantly lower in DRS than in non-DRS subjects, while nitroglycerin induced vasorelaxation (NMD) or intima-media thickness (IMT) was similar. Interestingly, while triglyceride levels were normal in both groups, they were higher in DRS subjects, although they did not correlate with either FMD or NMD. Conclusions. Denture related stomatitis is associated with endothelial dysfunction in elderly patients with dentures. This is in part related to the fact that diabetes and smoking increase risk of both DRS and cardiovascular disease.
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Bodkin JV, Thakore P, Aubdool AA, Liang L, Fernandes ES, Nandi M, Spina D, Clark JE, Aaronson PI, Shattock MJ, Brain SD. Investigating the potential role of TRPA1 in locomotion and cardiovascular control during hypertension. Pharmacol Res Perspect 2014; 2:e00052. [PMID: 25505598 PMCID: PMC4186440 DOI: 10.1002/prp2.52] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 04/23/2014] [Accepted: 04/24/2014] [Indexed: 12/23/2022] Open
Abstract
Radiotelemetry was used to investigate the in vivo cardiovascular and activity phenotype of both TRPA1 (transient receptor potential ankyrin 1) wild-type (WT) and TRPA1 knockout (KO) mice. After baseline recording, experimental hypertension was induced using angiotensin II infusion (1.1 mg(-1) kg(-1) a day, for 14 days). TRPA1 WT and KO mice showed similar morphological and functional cardiovascular parameters, including similar basal blood pressure (BP), heart rate, size, and function. Similar hypertension was also displayed in response to angiotensin II (156 ± 7 and 165 ± 11 mmHg, systolic BP ± SEM, n = 5-6). TRPA1 KO mice showed increased hypertensive hypertrophy (heart weight:tibia length: 7.3 ± 1.6 mg mm(-1) vs. 8.8 ± 1.7 mg mm(-1)) and presented with blunted interleukin 6 (IL-6) production compared with hypertensive WT mice (151 ± 24 vs. 89 ± 16 pg mL(-1)). TRPA1 expression in dorsal root ganglion (DRG) neurones was upregulated during hypertension (163% of baseline expression). Investigations utilizing the TRPA1 agonist cinnamaldehyde (CA) on mesenteric arterioles isolated from näive mice suggested a lack of TRPA1-dependent vasoreactivity in this vascular bed; a site with notable ability to alter total peripheral resistance. However, mesenteric arterioles isolated from TRPA1 KO hypertensive mice displayed significantly reduced ability to relax in response to nitric oxide (NO) (P < 0.05). Unexpectedly, naïve TRPA1 KO mice also displayed physical hyperactivity traits at baseline, which was exacerbated during hypertension. In conclusion, our study provides a novel cardiovascular characterization of TRPA1 KO mice in a model of hypertension. Results suggest that TRPA1 has a limited role in global cardiovascular control, but we demonstrate an unexpected capacity for TRPA1 to regulate physical activity.
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Affiliation(s)
- Jennifer V Bodkin
- Cardiovascular Division, BHF Centre of Excellence and Centre of Integrative Biomedicine, School of Medicine, King's College London London, SE1 9NH, U.K
| | - Pratish Thakore
- Cardiovascular Division, BHF Centre of Excellence and Centre of Integrative Biomedicine, School of Medicine, King's College London London, SE1 9NH, U.K ; Pharmaceutical Sciences Division, School of Biomedical Sciences, King's College London London, SE1 9NH, U.K
| | - Aisah A Aubdool
- Cardiovascular Division, BHF Centre of Excellence and Centre of Integrative Biomedicine, School of Medicine, King's College London London, SE1 9NH, U.K
| | - Lihuan Liang
- Cardiovascular Division, BHF Centre of Excellence and Centre of Integrative Biomedicine, School of Medicine, King's College London London, SE1 9NH, U.K
| | - Elizabeth S Fernandes
- Cardiovascular Division, BHF Centre of Excellence and Centre of Integrative Biomedicine, School of Medicine, King's College London London, SE1 9NH, U.K ; Programa de Pós-Graduação em Biologia Parasitária, Universidade Ceuma São Luís, Brazil
| | - Manasi Nandi
- Pharmaceutical Sciences Division, School of Biomedical Sciences, King's College London London, SE1 9NH, U.K
| | - Domenico Spina
- Pharmaceutical Sciences Division, School of Biomedical Sciences, King's College London London, SE1 9NH, U.K
| | - James E Clark
- Cardiovascular Division, BHF Centre of Excellence and Centre of Integrative Biomedicine, School of Medicine, King's College London London, SE1 9NH, U.K
| | - Philip I Aaronson
- Asthma, Allergy and Lung Biology Division, School of Medicine, King's College London London, SE1 1UL, U.K
| | - Michael J Shattock
- Cardiovascular Division, BHF Centre of Excellence and Centre of Integrative Biomedicine, School of Medicine, King's College London London, SE1 9NH, U.K
| | - Susan D Brain
- Cardiovascular Division, BHF Centre of Excellence and Centre of Integrative Biomedicine, School of Medicine, King's College London London, SE1 9NH, U.K
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