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Shin S, Park J, Choi HY, Bu Y, Lee K. Sakuranetin as a Potential Regulator of Blood Pressure in Spontaneously Hypertensive Rats by Promoting Vasorelaxation through Calcium Channel Blockade. Biomedicines 2024; 12:346. [PMID: 38397948 PMCID: PMC10887318 DOI: 10.3390/biomedicines12020346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/29/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
Natural compounds, known for diverse pharmacological properties, have attracted attention as potential sources for hypertension treatment. Previous studies have revealed the hypotensive effect and vascular relaxation of prunetin, a natural compound derived from Prunus yedoensis. However, the potential blood pressure-lowering and vasorelaxant effects of sakuranetin, another representative compound found in plants belonging to the genus Prunus, have remained unexplored. We aimed to fill this gap by investigating the hypotensive and vasorelaxant effects of sakuranetin in rats. Results indicated that sakuranetin, particularly in the sakuranetin 20 mg/kg group, led to significant reductions in systolic blood pressure (SBP) and diastolic blood pressure (DBP) by -14.53 ± 5.64% and -19.83 ± 6.56% at 4 h after administration. In the sakuranetin 50 mg/kg group, the SBP and DBP decreased by -13.27 ± 6.86% and -16.62 ± 10.01% at 2 h and by -21.61 ± 4.49% and -30.45 ± 5.21% at 4 h after administration. In addition, we identified the vasorelaxant effects of sakuranetin, attributing its mechanisms to the inhibition of calcium influx and the modulation of angiotensin II. Considering its hypotensive and vasorelaxant effects, sakuranetin could potentially serve as an antihypertensive agent. However, further research is required to evaluate the safety and long-term efficacy.
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Affiliation(s)
- Sujin Shin
- Department of Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Junkyu Park
- Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Ho-Young Choi
- Department of Herbal Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Youngmin Bu
- Department of Herbal Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyungjin Lee
- Department of Herbal Pharmacology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
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Awata WMC, Sousa AH, de Mello MMB, Dourado TMH, Pinheiro LC, Elias-Oliveira J, Rodrigues VF, Carlos D, Castro MM, Tirapelli CR. AT 1 receptors modulate ethanol-induced loss of anticontractile effect of perivascular adipose tissue. Biochem Pharmacol 2023; 217:115840. [PMID: 37783376 DOI: 10.1016/j.bcp.2023.115840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023]
Abstract
Ethanol consumption activates renin-angiotensin-aldosterone system (RAAS), which plays a major role in the pro-contractile and hypertensive effects linked to ethanol. We hypothesized that ethanol consumption induces loss of the anticontractile effect of perivascular adipose tissue (PVAT)through RAAS-mediated mechanisms. We examined the contribution of angiotensin II type 1 receptors (AT1R) to ethanol-induced PVAT dysfunction. With this purpose, male Wistar Hannover rats were treated with ethanol 20 % (in volume ratio) and/or losartan (antagonist of AT1R; 10 mg/kg/day, gavage) for 9 weeks. Losartan prevented the increase in blood pressure and the loss of the anticontractile effect of PVAT induced by ethanol consumption. PVAT dysfunction occurred after 3 and 9 weeks of treatment with ethanol in an endothelium-dependent manner. Blockade of AT1R prevented ethanol-induced reduction of adiponectin levels in PVAT from ethanol-treated rats. Functional assays revealed that ethanol impaired the anticontractile effect of PVAT-derived angiotensin (1-7) and endothelial nitric oxide (NO). In conclusion, AT1R are implicated in ethanol-induced loss of the anticontractile effect of PVAT. In PVAT, AT1R activation decreases the production of adiponectin, a PVAT-derived factor that promotes vasorelaxation in an endothelium-dependent manner. In the endothelium, AT1R favors the production of superoxide (O2•-) leading to a reduction in NO bioavailability. These responses impair the vasodilator action induced by PVAT-derived angiotensin (1-7), which occurs via Mas receptors located in endothelial cells. Ethanol-induced PVAT dysfunction favors vascular hypercontractility, a response that could contribute to the hypertensive state associated with ethanol consumption.
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Affiliation(s)
- Wanessa M C Awata
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil; Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Arthur H Sousa
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil; Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Marcela M B de Mello
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Thales M H Dourado
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil; Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Lucas C Pinheiro
- Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Jefferson Elias-Oliveira
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Vanessa F Rodrigues
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Daniela Carlos
- Departamento de Bioquímica e Imunologia, Faculdade de Medicina de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil
| | - Michele M Castro
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto, São Paulo, Brazil
| | - Carlos R Tirapelli
- Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, São Paulo, Brazil.
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Ukwubile CA, Ikpefan EO, Dibal MY, Umeano VA, Menkiti DN, Kaosi CC, Paul S, Famurewa AC, Nettey H, Yerima TS. Pharmacognostic profiles, evaluation of analgesic, anti-inflammatory and anticonvulsant activities of Newbouldia laevis (P. Beauv.) Seem. ex Bureau leaf and root extracts in Wistar rats. JOURNAL OF ETHNOPHARMACOLOGY 2023; 314:116632. [PMID: 37211190 DOI: 10.1016/j.jep.2023.116632] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/23/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Newbouldia laevis is a popular medicinal plant whose leaves and roots are used in Nigeria as ethnomedicinal prescriptions for pain, inflammation, convulsion, and epilepsy. These claims have not been scientifically verified prior to this study. AIM OF THE STUDY To determine pharmacognostic profiles of the leaves and roots and evaluate the analgesic, anti-inflammatory, and anticonvulsant activities of methanol leaf and root extracts in Wistar rats. MATERIAL AND METHODS The pharmacognostic profiles of the leaves and roots were determined using standard procedures to serve as fingerprints for the plant. The methanol leaf and root extracts of Newbouldia laevis were tested for acute toxicity using the OECD's up and down method at the maximum dose of 2000 mg/kg (orally) in Wistar rats. Analgesic studies were carried out in acetic acid-induced writhing in rats and tail immersion. The anti-inflammatory activity of the extracts was evaluated using carrageenan-induced rat paw-oedema and formalin-induced inflammation in rats' mode. The anticonvulsant activity was determined using strychnine-induced, pentylenetetrazol-induced, and maximal electroshock-induced rat convulsion models. For each of these studies, the extracts doses of 100, 200 and 400 mg/kg were administered to the rats following the oral route. RESULTS The pharmacognostic profiles showed that the leaves possessed deep-sunken paracytic stomata (5-8-16 mm2; adaxial, 8-11-24 mm2; abaxial epidermis), vein islets (2-4-10 mm2; adaxial), vein terminations (10-14-18 mm2; adaxial), palisade ratio (8.3-12.5-16.4 mm2; adaxial, 2.5-6.8-12.2 mm2; adaxial), covering unicellular trichome (8-14; adaxial), spheroidal calcium oxalate crystals (3-5 μm), and oval-shaped striated starch grain with no hilum (0.5-4.3 μm). The transverse section of the leaf showed the presence of spongy and palisade parenchyma as well as a closed vascular bundle. The root powder showed the presence of brachy sclereid, fibers without lumen, and lignin. All physicochemical parameters fall within the acceptable limits, phytochemical contents showed mainly glycosides, alkaloids, and steroids while acute oral toxicity (LD50) of the parts for 14 days did not produce any toxicity signs or mortality in the rats. The extracts produced dose-dependent (100-400 mg/kg) analgesic involving opioid receptors, anti-inflammatory, and anticonvulsant activities in the rats which were significant (p ≤ 0.05) when compared to the standard drugs. The leaf extract possessed the most potent analgesic and anti-inflammatory effects in the rats, while the most anticonvulsant effects were observed in rats treated with the leaf extract. Both extracts showed elevated levels of protection against strychnine-induced, pentylenetetrazol-induced, and maximal electroshock-induced seizure in rats. CONCLUSION Our study revealed some pharmacognostic profiles of Newbouldia laevis leaves and roots that are vital for its identification from closely related species often used for adulteration in traditional medicine. The study further showed that the leaf and root extracts of the plant possessed dose-dependent analgesics, anti-inflammatory and anti-convulsant activities in rats, thus, justifying its use for the treatment of these diseases in Nigerian traditional medicine. There is a need to further study its mechanisms of action towards drug discovery.
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Affiliation(s)
- Cletus Anes Ukwubile
- Department of Pharmacognosy, Faculty of Pharmacy, University of Maiduguri, Maiduguri, Nigeria.
| | - Emmanuel Oise Ikpefan
- Department of Pharmacognosy and Traditional Medicine, Faculty of Pharmacy, Delta State University, Abraka, Nigeria
| | - Musa Yusuf Dibal
- Department of Pharmacognosy, Faculty of Pharmacy, University of Maiduguri, Maiduguri, Nigeria
| | - Vivian Amarachukwu Umeano
- Department of Human Anatomy, Faculty of Medicine, University of Nigeria Nsukka, Enugu Campus, Enugu State, Nigeria
| | - David Nnamdi Menkiti
- Department of Chemistry, Faculty of Physical Sciences, Ahmadu Bello University, Zaria, Nigeria
| | - Clement Chidi Kaosi
- Department of Physiology, Faculty of Medicine, Chukwuemeka Odumegwu Ojukwu University, Nigeria
| | - Simon Paul
- Department of Biological Sciences, Faculty of Science, Federal University of Health Sciences, Otukpo, Nigeria
| | - Ademola Clement Famurewa
- Department of Medical Biochemistry, Faculty of Basic Medical Sciences, College of Medicine, Alex Ekwueme Federal University, Ndufu-Alike Ikwo, Nigeria
| | - Henry Nettey
- Department of Pharmaceutics and Pharmaceutical Microbiology, School of Pharmacy, University of Ghana, Legon, Ghana
| | - Timothy Samuel Yerima
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, University of Maiduguri, Maiduguri, Nigeria
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Aldehyde Dehydrogenase 2 (ALDH2) Elicits Protection against Pulmonary Hypertension via Inhibition of ERK1/2-Mediated Autophagy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:2555476. [PMID: 35770049 PMCID: PMC9236760 DOI: 10.1155/2022/2555476] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/06/2022] [Accepted: 05/30/2022] [Indexed: 11/18/2022]
Abstract
Pulmonary hypertension (PH) is caused by chronic hypoxia that induces the migration and proliferation of pulmonary arterial smooth muscle cells (PASMCs), eventually resulting in right heart failure. PH has been related to aberrant autophagy; however, the hidden mechanisms are still unclear. Approximately 40% East Asians, equivalent to 8% of the universal population, carry a mutation in Aldehyde dehydrogenase 2 (ALDH2), which leads to the aggregation of noxious reactive aldehydes and increases the propensity of several diseases. Therefore, we explored the potential aspect of ALDH2 in autophagy associated with PH. In vitro mechanistic studies were conducted in human PASMCs (HPASMCs) after lentiviral ALDH2 knockdown and treatment with platelet-derived growth factor-BB (PDGF-BB). PH was induced in wild-type (WT) and ALDH2-knockout (ALDH2−/−) mice using vascular endothelial growth factor receptor inhibitor SU5416 under hypoxic conditions (HySU). Right ventricular function was assessed using echocardiography and invasive hemodynamic monitoring. Histological and immunohistochemical analyses were performed to evaluate pulmonary vascular remodeling. EdU, transwell, and wound healing assays were used to evaluate HPASMC migration and proliferation, and electron microscopy and immunohistochemical and immunoblot assays were performed to assess autophagy. The findings demonstrated that ALDH2 deficiency exacerbated right ventricular pressure, hypertrophy, fibrosis, and right heart failure resulting from HySU-induced PH. ALDH2−/− mice exhibited increased pulmonary artery muscularization and 4-hydroxynonenal (4-HNE) levels in lung tissues. ALDH2 knockdown increased PDGF-BB-induced PASMC migration and proliferation and 4-HNE accumulation in vitro. Additionally, ALDH2 deficiency increased the number of autophagosomes and autophagic lysosomes together with autophagic flux and ERK1/2-Beclin-1 activity in lung tissues and PASMCs, indicating enhanced autophagy. In conclusion, the study shows that ALDH2 has a protective role against the migration and proliferation of PASMCs and PH, possibly by regulating autophagy through the ERK1/2-Beclin-1 pathway.
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Lin B, Jin Q, Liu C, Zhao W, Ji R. Effect and mechanism of Tai Chi on blood pressure of patients with essential hypertension: a randomised controlled study. J Sports Med Phys Fitness 2021; 62:1272-1277. [PMID: 34881557 DOI: 10.23736/s0022-4707.21.13394-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Tai Chi is a traditional Chinese martial art that is increasingly popular in the world for positive health benefits. The influence and mechanism of Tai Chi on blood pressure in patients with essential hypertension still have high value for research. METHODS A total of 99 patients with hypertension were randomly divided into control group and Tai Chi group. Tai Chi intervention lasted for 12 weeks, and the control group maintained normal dietary and exercise habits. The changes of systolic and diastolic blood pressures in patients before and after the intervention were monitored. The serum concentrations of angiotensin II (Ang II) and nitric oxide (NO) were detected. RESULTS There was no significant difference in baseline parameters between the two groups (P>0.05). Compared with the control group, the decreased systolic and diastolic blood pressure in Tai Chi group was higher after 12 weeks (P<0.001). At the 12th week, the decreased level of Ang II and the increased level of NO in Tai Chi group were higher than those in the control group (P<0.001). CONCLUSIONS Tai Chi can improve the blood pressure of patients with hypertension by decreasing the serum Ang II level and increasing the serum NO level.
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Affiliation(s)
- Bo Lin
- Department of Basic Medicine, Jiangsu College of Nursing, Huaian, China
| | - Qiu Jin
- Department of Basic Medicine, Jiangsu College of Nursing, Huaian, China
| | - Chunhua Liu
- Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - Wenhui Zhao
- Department of Basic Medicine, Jiangsu College of Nursing, Huaian, China
| | - Runyuan Ji
- Department of Basic Medicine, Jiangsu College of Nursing, Huaian, China -
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Rajtik T, Galis P, Bartosova L, Paulis L, Goncalvesova E, Klimas J. Alternative RAS in Various Hypoxic Conditions: From Myocardial Infarction to COVID-19. Int J Mol Sci 2021; 22:ijms222312800. [PMID: 34884604 PMCID: PMC8657827 DOI: 10.3390/ijms222312800] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/20/2021] [Accepted: 11/24/2021] [Indexed: 12/28/2022] Open
Abstract
Alternative branches of the classical renin–angiotensin–aldosterone system (RAS) represent an important cascade in which angiotensin 2 (AngII) undergoes cleavage via the action of the angiotensin-converting enzyme 2 (ACE2) with subsequent production of Ang(1-7) and other related metabolites eliciting its effects via Mas receptor activation. Generally, this branch of the RAS system is described as its non-canonical alternative arm with counterbalancing actions to the classical RAS, conveying vasodilation, anti-inflammatory, anti-remodeling and anti-proliferative effects. The implication of this branch was proposed for many different diseases, ranging from acute cardiovascular conditions, through chronic respiratory diseases to cancer, nonetheless, hypoxia is one of the most prominent common factors discussed in conjugation with the changes in the activity of alternative RAS branches. The aim of this review is to bring complex insights into the mechanisms behind the various forms of hypoxic insults on the activity of alternative RAS branches based on the different duration of stimuli and causes (acute vs. intermittent vs. chronic), localization and tissue (heart vs. vessels vs. lungs) and clinical relevance of studied phenomenon (experimental vs. clinical condition). Moreover, we provide novel insights into the future strategies utilizing the alternative RAS as a diagnostic tool as well as a promising pharmacological target in serious hypoxia-associated cardiovascular and cardiopulmonary diseases.
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Affiliation(s)
- Tomas Rajtik
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University, 832 32 Bratislava, Slovakia; (P.G.); (L.B.); (J.K.)
- Correspondence: ; Tel.: +42-12-501-17-391
| | - Peter Galis
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University, 832 32 Bratislava, Slovakia; (P.G.); (L.B.); (J.K.)
| | - Linda Bartosova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University, 832 32 Bratislava, Slovakia; (P.G.); (L.B.); (J.K.)
| | - Ludovit Paulis
- Institute of Pathophysiology, Faculty of Medicine, Comenius University, 811 08 Bratislava, Slovakia;
| | - Eva Goncalvesova
- Department of Heart Failure, Clinic of Cardiology, National Institute of Cardiovascular Diseases, 831 01 Bratislava, Slovakia;
| | - Jan Klimas
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University, 832 32 Bratislava, Slovakia; (P.G.); (L.B.); (J.K.)
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Liu X, Wang X, Pan Y, Zhao L, Sun S, Luo A, Bao C, Tang H, Han Y. Artemisinin Improves Acetylcholine-Induced Vasodilatation in Rats with Primary Hypertension. DRUG DESIGN DEVELOPMENT AND THERAPY 2021; 15:4489-4502. [PMID: 34764635 PMCID: PMC8576437 DOI: 10.2147/dddt.s330721] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 10/20/2021] [Indexed: 12/29/2022]
Abstract
Purpose Endothelial dysfunction and the subsequent decrease in endothelium-dependent vascular relaxation of small arteries are major features of hypertension. Artemisinin, a well-known antimalarial drug, has been shown to exert protecting roles against endothelial cell injury in cardiac and pulmonary vascular diseases. The current study aimed to investigate the effects of artemisinin on endothelium-dependent vascular relaxation and arterial blood pressure, as well as the potential signalling pathways in spontaneously hypertensive rats (SHRs). Methods In this study, acetylcholine (ACh)-induced dose-dependent relaxation assays were performed to evaluate vascular endothelial function after treatment with artemisinin. Artemisinin was administered to the rats by intravenous injection or to arteries by incubation for the acute exposure experiments, and it was administered to rats by intraperitoneal injection for 28 days for the chronic experiments. Results Both acute and chronic administration of artemisinin decreased the heart rate and improved ACh-induced endothelium-dependent relaxation but negligibly affected the arterial blood pressure in SHRs. Incubation with artemisinin decreased basal vascular tension, NAD(P)H oxidase activity and reactive oxygen species (ROS) levels, but it also increased endothelial nitric oxide (NO) synthase (eNOS) activity and NO levels in the mesenteric artery, coronary artery, and pulmonary artery of SHRs. Artemisinin chronic administration to SHRs increased the protein expression of eNOS and decreased the protein expression of the NAD(P)H oxidase subunits NOX-2 and NOX-4 in the mesenteric artery. Conclusion These results indicate that treatment with artemisinin has beneficial effects on reducing the heart rate and basal vascular tension and improving endothelium-dependent vascular relaxation in hypertension, which might occur by increasing eNOS activation and NO release and inhibiting NAD(P)H oxidase derived ROS production.
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Affiliation(s)
- Xuanxuan Liu
- Key Laboratory of Targeted Intervention for Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China.,Department of Physiology and Pathologic Physiology, Kangda College of Nanjing Medical University, Lianyungang, Jiangsu, People's Republic of China
| | - Xingxing Wang
- Key Laboratory of Targeted Intervention for Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Yan Pan
- Key Laboratory of Targeted Intervention for Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Li Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Shuo Sun
- Key Laboratory of Targeted Intervention for Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
| | - Ang Luo
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China
| | - Changlei Bao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China.,State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Haiyang Tang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, People's Republic of China.,State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Ying Han
- Key Laboratory of Targeted Intervention for Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Department of Physiology, Nanjing Medical University, Nanjing, Jiangsu, People's Republic of China
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Xue X, Duan R, Zhang QQ, Wang SY, Gong PY, Yan E, Zhang YD, Jiang T. A non-peptidic MAS1 agonist AVE0991 alleviates hippocampal synaptic degeneration in rats with chronic cerebral hypoperfusion. Curr Neurovasc Res 2021; 18:343-350. [PMID: 34636310 DOI: 10.2174/1567202618666211012095210] [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: 06/30/2021] [Revised: 07/10/2021] [Accepted: 07/14/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Chronic cerebral hypoperfusion (CCH) is a contributing factor for neurodegenerative diseases. As a recently identified heptapeptide of the brain renin-angiotensin system, angiotensin-(1-7) was revealed to activate its receptor MAS1 and thus ameliorated cognitive impairments in rats with CCH. Since hippocampal synaptic degeneration represents an important pathological basis of cognitive deficits, we hypothesize that activation of MAS1-mediated signaling may alleviate CCH-induced synaptic degeneration in the hippocampus. METHODS In this study, we tested this hypothesis and uncovered the underlying mechanisms in a rat model of CCH induced by bilateral common carotid artery ligation surgery. At 1 week after the surgery, rats received a daily intraperitoneal injection of vehicle or a non-peptidic MAS1 agonist AVE0991 for 8 weeks. During this procedure, cerebral blood flow (CBF) was recorded. The levels of MAS1, amyloid-β (Aβ), neuroinflammatory cytokines, glial cell markers and synaptophysin in the hippocampus were assessed at the end of the treatment period. RESULTS We showed that AVE0991 significantly alleviated hippocampal synaptic degeneration in rats with CCH. This protection might be achieved by facilitating CBF recovery, reducing hippocampal Aβ levels and suppressing neuroinflammatory responses. CONCLUSIONS These findings indicate that MAS1-mediated signaling may represent a novel therapeutic target for CCH-related neurodegenerative diseases.
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Affiliation(s)
- Xiao Xue
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006. China
| | - Rui Duan
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006. China
| | - Qiao-Quan Zhang
- Department of Pathology, Nanjing Brain Hospital, Nanjing Medical University, Nanjing, 210029. China
| | - Si-Yu Wang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006. China
| | - Peng-Yu Gong
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006. China
| | - Yan E
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006. China
| | - Ying-Dong Zhang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006. China
| | - Teng Jiang
- Department of Neurology, Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006. China
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Umnyagina IA, Blinova TV, Strakhova LA, Ivanova YV, Troshin VV, Kolesov SA, Fomina YN. Endothelin-1 and nitrogen oxide metabolites in risk diagnostics of arterial hypertension in persons of young and middle ages occupied in harmful working conditions. Klin Lab Diagn 2021; 66:525-532. [PMID: 34543530 DOI: 10.51620/0869-2084-2021-66-9-525-532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Hypertension is a global public health problem. One of the reasons contributing to the development of arterial hypertension is endothelial dysfunction, which is expressed in the imbalance of vasoactive indicators of vascular tone - nitrogen oxide and endothelin-1. Monitoring the indicators of endothelial dysfunction in workers exposed to harmful occupational factors will help to identify a risk group for the development of occupationally caused diseases of the cardiovascular system and, in particular, arterial hypertension, for early implementation of preventive measures. This study aims to identify the relationship between endothelin-1, nitrogen oxide metabolites and blood pressure in young and middle-aged people occupied in harmful working conditions, to evaluate the studied parameters as possible markers for diagnosing the risk of hypertension. Two hundred thirty-six (236) employees of young and middle age were examined of one of the metallurgical plants of the Nizhny Novgorod region. In order to characterize the state of vascular tone, a coefficient was used that represents the ratio of the concentration of nitrogen oxide (μmol/L) to endothelin-1 (pg/ml) (NOx/ET-1). It was revealed that in one-third of people with normal and high normal blood pressure, the NOx/ET-1 value was 2-3 times less than in people with optimal blood pressure, which indicates the occurrence of endothelial dysfunction and the possible development of persistent arterial hypertension. Harmful occupational factors negatively affect vascular tone - the value of NOx/ET-1 in individuals exposed to harmful factors was 3-4 times less than in individuals not subjected to such exposure. The NOx/ET-1 coefficient can be used as an informative indicator when monitoring health conditions with an in-depth examination of working people; it can be a criterion for the risk of developing hypertension.
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Affiliation(s)
- I A Umnyagina
- FBSI «Nizhny Novgorod Research Institute for Hygiene and Occupational Pathology», Rospotrebnadzor
| | - T V Blinova
- FBSI «Nizhny Novgorod Research Institute for Hygiene and Occupational Pathology», Rospotrebnadzor
| | - L A Strakhova
- FBSI «Nizhny Novgorod Research Institute for Hygiene and Occupational Pathology», Rospotrebnadzor
| | - Yu V Ivanova
- FBSI «Nizhny Novgorod Research Institute for Hygiene and Occupational Pathology», Rospotrebnadzor
| | - V V Troshin
- FBSI «Nizhny Novgorod Research Institute for Hygiene and Occupational Pathology», Rospotrebnadzor
| | - S A Kolesov
- FBSI «Nizhny Novgorod Research Institute for Hygiene and Occupational Pathology», Rospotrebnadzor
| | - Yu N Fomina
- FBSI «Nizhny Novgorod Research Institute for Hygiene and Occupational Pathology», Rospotrebnadzor
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10
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Tissue Renin-Angiotensin System (tRAS) Induce Intervertebral Disc Degeneration by Activating Oxidative Stress and Inflammatory Reaction. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:3225439. [PMID: 34413926 PMCID: PMC8369181 DOI: 10.1155/2021/3225439] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 07/08/2021] [Indexed: 12/15/2022]
Abstract
Lumbar intervertebral disc degeneration (IDD) has been the major contributor to low back pain (LBP). IDD is an chronic inflammation process, with the activation of plentiful inflammation-related cytokines and ECM degradation-related enzymes. In the past few years, hypertension has been reported to correlate with LBP. In addition, the local tissue renin-angiotensin system (tRAS) has been identified in multiple tissues, including the spinal cord, skin, kidney, heart, and bone. Recently, tRAS has also been established in both bovine and human intervertebral disc tissues, especially in the degenerated disc tissue. However, the exact of tRAS and IDD remains unknown. In this present study, proteomic analysis, molecular biology analysis, and animal model were all used. Firstly, we revealed that tRAS was excessively activated in the human degenerated intervertebral disc tissue via proteomic analysis and molecular biology analysis. Then, in vitro experiment suggested that Ang II could decrease the cell viability of human NP cells and promote NP cell apoptosis, senescence, oxidative stress, and NLRP3 activation in human NP cells. In addition, Ang II could also trigger degeneration and fibrosis phenotype in human NP cells. Finally, the animal model demonstrated that the local activated ACE/Ang II axis in the NP tissue could accelerate IDD in aging spontaneously hypertensive rats (SHR). Collectively, the degenerated intervertebral disc tissue showed excessively activated tRAS, and local activated tRAS could induce NP cell senescence, apoptosis, oxidative stress, and inflammatory reaction to promote IDD. These biological effects of Ang II on human NP cells may provide novel insight into further treatment of IDD.
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11
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Stoyell-Conti FF, Chabbra A, Puthentharayil J, Rigatto K, Speth RC. Chronic administration of pharmacological doses of angiotensin 1-7 and iodoangiotensin 1-7 has minimal effects on blood pressure, heart rate, and cognitive function of spontaneously hypertensive rats. Physiol Rep 2021; 9:e14812. [PMID: 33904655 PMCID: PMC8077095 DOI: 10.14814/phy2.14812] [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: 11/03/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 12/26/2022] Open
Abstract
Cardiovascular diseases are the principal cause of death worldwide, with hypertension being the most common cardiovascular disease risk factor. High blood pressure (BP) is also associated with an increased risk of poor cognitive performance and dementia including Alzheimer's disease. Angiotensin 1–7 (Ang 1‐7), a product of the renin‐angiotensin system (RAS), exhibits central and peripheral actions to reduce BP. Recent data from our lab reveals that the addition of a non‐radioactive iodine molecule to the tyrosine in position 4 of Ang 1‐7 (iodoAng 1‐7) makes it ~1000‐fold more potent than Ang 1‐7 in competing for the 125I‐Ang 1‐7 binding site (Stoyell‐Conti et al., 2020). Moreover, the addition of the non‐radioactive iodine molecule increases (~4‐fold) iodoAng 1‐7’s ability to bind to the AT1 receptor (AT1R), the primary receptor for Ang II. Preliminary data indicates that iodoAng 1‐7 can also compete for the 125I‐Ang IV binding site with a low micromolar IC50. Thus, our aims were to compare the effects of chronic treatment of the Spontaneously Hypertensive Rat (SHR) with iodoAng 1‐7 (non‐radioactive iodine isotope) and Ang 1‐7 on arterial pressure, heart rate, and cognitive function. For this study, male SHRs were divided into three groups and treated with Saline, Ang 1‐7, or iodoAng 1‐7 administrated subcutaneously using a 28‐day osmotic mini pump. Systolic BP was measured non‐invasively by the tail‐cuff technique. Cognitive function was assessed by Y‐Maze test and novel object recognition (NOR) test. We have demonstrated in SHRs that subcutaneous administration of high doses of iodoAng 1‐7 prevented the increase in heart rate with age, while Ang 1‐7 showed a trend toward preventing the increase in heart rate, possibly by improving baroreflex control of the heart. Conversely, neither Ang 1‐7 nor iodoAng 1‐7 administered subcutaneously affected BP nor cognitive function.
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Affiliation(s)
- Filipe F Stoyell-Conti
- College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, USA.,Surgery Department, University of Miami, Miami, FL, USA
| | - Alesa Chabbra
- Halmos College of Natural Science & Oceanography, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Joseph Puthentharayil
- Halmos College of Natural Science & Oceanography, Nova Southeastern University, Fort Lauderdale, FL, USA
| | - Katya Rigatto
- Institute for Neuro-Immune Medicine, Nova Southeastern University, Fort Lauderdale, FL, USA.,Laboratório de Fisiologia Translacional, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Robert C Speth
- College of Pharmacy, Nova Southeastern University, Fort Lauderdale, FL, USA.,Department of Pharmacology and Physiology, College of Medicine, Georgetown University, Washington, DC, USA
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12
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Pan Y, Sun S, Wang X, Chen A, Fei X, Wang W, Han Y. Improvement of Vascular Function by Knockdown of Salusin-β in Hypertensive Rats via Nitric Oxide and Reactive Oxygen Species Signaling Pathway. Front Physiol 2021; 12:622954. [PMID: 33897447 PMCID: PMC8063058 DOI: 10.3389/fphys.2021.622954] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 03/04/2021] [Indexed: 12/29/2022] Open
Abstract
Purpose Salusin-β, a multifunctional vasoactive peptide, has a potentially important function in the pathological development of hypertension. However, the exact functional role of salusin-β and the underlying mechanism in this process are still not fully understood. The current study aimed to investigate the effects of silencing salusin-β on vascular function and vascular remodeling, as well as its signaling pathways in spontaneously hypertensive rats (SHR) and Wistar-Kyoto rats (WKY). Methods Silencing salusin-β was performed by caudal vein injection of adenovirus expressing salusin-β short hairpin RNA (shRNA). Acetylcholine (ACh)-induced endothelium-dependent relaxation was used to evaluate vasodilator function, and high K+ solution-induced constriction was used to evaluate vasoconstriction function. Results Salusin-β levels in plasma and its protein expression in mesenteric artery (MA), coronary artery (CA), and pulmonary artery (PA) of SHR were higher than those in WKY. The salusin-β level and expression were decreased effectively by salusin-β shRNA. Knockdown of salusin-β decreased arterial blood pressure (ABP) and high K+ solution-induced vascular constrictions, and improved the endothelium-dependent relaxation and vascular remodeling in SHR. The improved effect of silencing salusin-β on ACh-induced relaxation in SHR was almost blocked by the nitric oxide synthase (NOS) inhibitor L-NAME. Compared to WKY, the endothelial NOS (eNOS) activity and level, and nitric oxide (NO) level were decreased, while NAD(P)H oxidase activity and reactive oxygen species (ROS) levels in MA, CA, and PA of SHR were increased, which were all redressed by salusin-β knockdown. Conclusion These results indicate that knockdown of salusin-β improves endothelium-dependent vascular relaxation and vascular remodeling and decreases ABP and vasoconstriction in SHR, which might be accomplished by increasing eNOS activation and NO release while inhibiting NAD(P)H oxidase derived-ROS generation. Scavenging salusin-β improves vascular function and then prevents the development and progression of vasculopathy of hypertension.
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Affiliation(s)
- Yan Pan
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Nanjing Medical University, Nanjing, China.,Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Shuo Sun
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Nanjing Medical University, Nanjing, China.,Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Xingxing Wang
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Nanjing Medical University, Nanjing, China.,Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Aidong Chen
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Nanjing Medical University, Nanjing, China.,Department of Physiology, Nanjing Medical University, Nanjing, China
| | - Xuejie Fei
- Department of Emergency, Shanghai Putuo District People's Hospital, Tongji University, Shanghai, China
| | - Wei Wang
- Department of Emergency, Shanghai Putuo District People's Hospital, Tongji University, Shanghai, China
| | - Ying Han
- Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center of Translational Medicine for Cardiovascular Disease, Nanjing Medical University, Nanjing, China.,Department of Physiology, Nanjing Medical University, Nanjing, China
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13
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Li ZK, Gao LF, Zhu XA, Xiang DK. LncRNA HOXA-AS3 Promotes the Progression of Pulmonary Arterial Hypertension through Mediation of miR-675-3p/PDE5A Axis. Biochem Genet 2021; 59:1158-1172. [PMID: 33687636 DOI: 10.1007/s10528-021-10053-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 02/19/2021] [Indexed: 11/25/2022]
Abstract
Pulmonary arterial hypertension (PAH) seriously threatens the elder people. Long non-coding RNAs (lncRNAs) are involved in multiple diseases. However, the study of the lncRNAs in the occurrence of PAH is just beginning. For this, we sought to explore the biological function of lncRNA HOXA cluster antisense RNA 3 (HOXA-AS3) in PAH. Hypoxia (HYP) was used to mimic in vitro model of PAH. Gene and protein expressions in cells were detected by q-PCR and Western blotting, respectively. In addition, cell proliferation and viability were tested by CCK-8 and MTT assay. Cell apoptosis was measured by flow cytometry. Wound healing was used to detect cell migration. Furthermore, the connection of HOXA-AS3, miR-675-3p, and phosphodiesterase 5A (PDE5A) was verified by dual-luciferase report assay. HOXA-AS3 and PDE5A were upregulated in human pulmonary artery smooth muscle cells (HPASMCs) in the presence of HYP, while miR-675-3p was downregulated. Moreover, knockdown of HOXA-AS3 suppressed the growth and migration of HPASMCs, but induced the apoptosis. Overexpression of miR-675-3p achieved the same effect. MiR-675-3p inhibitor or overexpression of PDE5A notably reversed the inhibitory effect of HOXA-AS3 knockdown on PAH. Finally, HOXA-AS3 could sponge miR-675-3p, and PDE5A was directly targeted by miR-675-3p. HOXA-AS3 increased the development of PAH via regulation of miR-675-3p/PDE5 axis, which could be the potential biomarker for treatment of PAH.
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Affiliation(s)
- Zhong-Kui Li
- Department of Cardiovascular Surgery, Guizhou Provincial People's Hospital, No.83, East Zhongshan Road, Guiyang, 550002, Guizhou Province, People's Republic of China
| | - Lu-Fang Gao
- Department of Cardiovascular Surgery, Guizhou Provincial People's Hospital, No.83, East Zhongshan Road, Guiyang, 550002, Guizhou Province, People's Republic of China
| | - Xi-An Zhu
- Department of Cardiovascular Surgery, Guizhou Provincial People's Hospital, No.83, East Zhongshan Road, Guiyang, 550002, Guizhou Province, People's Republic of China
| | - Dao-Kang Xiang
- Department of Cardiovascular Surgery, Guizhou Provincial People's Hospital, No.83, East Zhongshan Road, Guiyang, 550002, Guizhou Province, People's Republic of China.
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14
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Gao M, Ma Y, Luo J, Li D, Jiang M, Jiang Q, Pi J, Chen R, Chen W, Zhang R, Zheng Y, Cui L. The Role of Nrf2 in the PM-Induced Vascular Injury Under Real Ambient Particulate Matter Exposure in C57/B6 Mice. Front Pharmacol 2021; 12:618023. [PMID: 33716746 PMCID: PMC7952307 DOI: 10.3389/fphar.2021.618023] [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: 10/19/2020] [Accepted: 01/25/2021] [Indexed: 12/19/2022] Open
Abstract
Short-and long-term exposure to particulate matter (PM) has been associated with cardiovascular disease (CVD). It is well recognized that oxidative stress is a potential major mechanism in PM-induced vascular injuries, in which the nuclear factor E2-related factor 2 (Nrf2) signaling pathway plays a critical role. In the current study, a Nrf2 knockout mouse model was used in combination with an individual ventilated cage (IVC)-based real-ambient PM exposure system to assess the potential vascular injury and the potential role of Nrf2 in the angiotensin II (Ang II)-associated vascular injury. After 6-or 11-week exposure to PM, the histopathology assay revealed that PM exposure resulted in the thickening of the walls of vascular. After 6 weeks exposure to PM, the ELISA assay revealed that PM exposure resulted in the elevated plasma concentration of Ang II. The expression levels of genes of interest were then further investigated with quantitative real-time PCR. Notably, the results showed that Angiotensinogen (AGT), Angiotensin converting enzyme (ACE) and Angiotensin type I receptor (AT1R) were involved in PM-induced pathological changes. Western blotting for ACE showed similar results. Moreover, the extent of vascular thickening and the Ang II elevation was most prominent in the Nrf2 gene knockout PM exposure group (KOE). Furthermore, the expression of Nrf2 downstream relevant genes (HO1, Nqo1, Gclc, Gsta4) were significantly enhanced in the wildtype PM exposure group (WTE), while those were remarkably suppressed in the Nrf2 gene knockout groups. The ELISA result of monocyte chemoattractant protein-1 (MCP-1) serum levels in the KOE group was significantly higher in relation to that in the Nrf2 knockout control group (KOC). In summary, PM exposure is associated with thickening of vascular wall, while Nrf2 knockout may further enhance this effect. A potential mechanistic contributor of such effects is the activation of ACE/ANGII/AT1R axis, in which Nrf2 played a regulatory role.
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Affiliation(s)
- Mengyu Gao
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Yuanyuan Ma
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Jing Luo
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Daochuan Li
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Menghui Jiang
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Qixiao Jiang
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Jingbo Pi
- School of Public Health, China Medical University, Shenyang, China
| | - Rui Chen
- Department of Toxicology, School of Public Health, Capital Medical University, Beijing, China
| | - Wen Chen
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Rong Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Yuxin Zheng
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
| | - Lianhua Cui
- Department of Toxicology, School of Public Health, Qingdao University, Qingdao, China
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15
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Sha NN, Zhang JL, Poon CCW, Li WX, Li Y, Wang YF, Shi W, Lin FH, Lin WP, Wang YJ, Zhang Y. Differential responses of bone to angiotensin II and angiotensin(1-7): beneficial effects of ANG(1-7) on bone with exposure to high glucose. Am J Physiol Endocrinol Metab 2021; 320:E55-E70. [PMID: 33103451 DOI: 10.1152/ajpendo.00158.2020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Osteoporosis, diabetes, and hypertension are common concurrent chronic disorders. This study aimed to explore the respective effects of angiotensin II (ANG II) and angiotensin(1-7) [ANG(1-7)], active peptides in the renin-angiotensin system, on osteoblasts and osteoclasts under high-glucose level, as well as to investigate the osteo-preservative effects of ANG II type 1 receptor (AT1R) blocker and ANG(1-7) in diabetic spontaneously hypertensive rats (SHR). ANG II and ANG(1-7), respectively, decreased and increased the formation of calcified nodules and alkaline phosphatase activity in MC3T3-E1 cells under high-glucose level, and respectively stimulated and inhibited the number of matured osteoclasts and pit resorptive area in RANKL-induced bone marrow macrophages. Olmesartan and Mas receptor antagonist A779 could abolish those effects. ANG II and ANG(1-7), respectively, downregulated and upregulated the expressions of osteogenesis factors in MC3T3-E1 cells. ANG II promoted the expressions of cathepsin K and MMP9 in RAW 264.7 cells, whereas ANG(1-7) repressed these osteoclastogenesis factors. ANG II rapidly increased the phosphorylation of Akt and p38 in RAW 264.7 cells, whereas ANG(1-7) markedly reduced the phosphorylation of p38 and ERK under high-glucose condition. After treatments of diabetic SHR with valsartan and ANG(1-7), a significant increase in trabecular bone area, bone mineral density, and mechanical strength was only found in the ANG(1-7)-treated group. Treatment with ANG(1-7) significantly suppressed the increase in renin expression and ANG II content in the bone of SHR. Taken together, ANG II/AT1R and ANG(1-7)/Mas distinctly regulated the differentiation and functions of osteoblasts and osteoclasts upon exposure to high-glucose condition. ANG(1-7) could protect SHR from diabetes-induced osteoporosis.
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Affiliation(s)
- Nan-Nan Sha
- Spine Disease Research Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Key Laboratory of Theory and Therapy of Muscles and Bones, Ministry of Education, Shanghai, China
| | - Jia-Li Zhang
- Spine Disease Research Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Christina Chui-Wa Poon
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, China
| | - Wen-Xiong Li
- Spine Disease Research Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yue Li
- Spine Disease Research Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yi-Fei Wang
- National TCM Clinical Research Base of Hypertension, the affiliated Hospital of Shandong University of TCM, Jinan, China
| | - Wei Shi
- National TCM Clinical Research Base of Hypertension, the affiliated Hospital of Shandong University of TCM, Jinan, China
| | - Fu-Hui Lin
- Department of Orthopaedic, Shenzhen Pingle Orthopaedic Hospital, Shenzhen, China
| | - Wen-Ping Lin
- Department of Orthopaedic, Shenzhen Pingle Orthopaedic Hospital, Shenzhen, China
| | - Yong-Jun Wang
- Spine Disease Research Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Key Laboratory of Theory and Therapy of Muscles and Bones, Ministry of Education, Shanghai, China
| | - Yan Zhang
- Spine Disease Research Institute, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- Key Laboratory of Theory and Therapy of Muscles and Bones, Ministry of Education, Shanghai, China
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16
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Yang J, Wang R, Cheng X, Qu H, Qi J, Li D, Xing Y, Bai Y, Zheng X. The vascular dilatation induced by Hydroxysafflor yellow A (HSYA) on rat mesenteric artery through TRPV4-dependent calcium influx in endothelial cells. JOURNAL OF ETHNOPHARMACOLOGY 2020; 256:112790. [PMID: 32234595 DOI: 10.1016/j.jep.2020.112790] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/20/2020] [Accepted: 03/21/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Hydroxysafflor yellow A (HSYA) is the principal constituent of the flowers of Carthamus tinctorius L., a traditional Chinese herbal medicine, which has been used for the treatment of cerebrovascular and cardiovascular diseases due to its property of promoting blood circulation and removing blood stasis. It is dominated in the water extract of Carthamus tinctorius L., which has been used in the clinical treatment for cardiovascular diseases. HSYA exerts a variety of pharmacological efficacy upon the vascular system. However, the underlying mechanisms remain unclear. AIM OF THE STUDY To investigate the vascular dilatation effect of HSYA on rat mesenteric artery (MA) and its potential mechanism. MATERIALS AND METHODS Adult male Wistar rats were applied to the study. Tension studies were conducted to determine the dilatation activity of HSYA against pre-contracted mesenteric arterial (MA) rings by U 46619 and Phenylephrine (PE). The vascular activities were measured with or without incubation with some selective inhibitors, including L-N(ω)-nitro-L-arginine methyl ester (L-NAME, a nitro oxide synthase inhibitor), HC-067047 (a selective TRPV4 antagonist), BaCl2 (a Kir channel blocker), and Indomethacin (Indo, a nonselective cyclooxygenase inhibitor), respectively. Immunocytochemistry, Calcium Imaging, NO Production detection, and Western Blot were also employed to further study the underlying mechanism. RESULTS HSYA reversed the constriction of MAs induced by U 46619 in a manner of concentration dependency, and the dilatation capability was reversed by L-NAME. This effect was significantly dependent on the intactness of MA endothelium, accompanying an increment of NO production in mesenteric arterial endothelium cells. The increment of NO production was reversed by inhibiting the PKA. Also, the expression of p-eNOS was activated by HSYA shown in Western Blot assays. The cells imaging revealed a significant increase and drop of the influx of Ca2+ before and after treatment with HC-067047. CONCLUSIONS These findings suggest that HSYA exerts vessel dilation effect on MAs via a TRPV4-dependent influx of Ca2+ in endothelium cells, PKA-dependent eNOS phosphorylation and NO production mechanism. The present study indicates that HSYA has the potential to be a future candidate for the treatment of hypertension.
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Affiliation(s)
- Jianfeng Yang
- College of Pharmacy, Harbin Medical University - Daqing, Daqing, 163319, China.
| | - Rui Wang
- College of Pharmacy, Harbin Medical University - Daqing, Daqing, 163319, China.
| | - Xiaohan Cheng
- College of Pharmacy, Harbin Medical University - Daqing, Daqing, 163319, China.
| | - HuiChong Qu
- College of Pharmacy, Harbin Medical University - Daqing, Daqing, 163319, China.
| | - Jing Qi
- College of Basic Medicine, Harbin Medical University - Daqing, Daqing, Heilongjiang, 163319, PR China.
| | - Dan Li
- College of Pharmacy, Harbin Medical University - Daqing, Daqing, 163319, China.
| | - Yan Xing
- College of Basic Medicine, Harbin Medical University - Daqing, Daqing, Heilongjiang, 163319, PR China.
| | - Yuhua Bai
- College of Pharmacy, Harbin Medical University - Daqing, Daqing, 163319, China.
| | - Xiaodong Zheng
- College of Basic Medicine, Harbin Medical University - Daqing, Daqing, Heilongjiang, 163319, PR China.
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