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Giri A, Mehan S, Khan Z, Das Gupta G, Narula AS, Kalfin R. Modulation of neural circuits by melatonin in neurodegenerative and neuropsychiatric disorders. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:3867-3895. [PMID: 38225412 DOI: 10.1007/s00210-023-02939-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 12/30/2023] [Indexed: 01/17/2024]
Abstract
Neurodegenerative and neuropsychiatric disorders are two broad categories of neurological disorders characterized by progressive impairments in movement and cognitive functions within the central and peripheral nervous systems, and have emerged as a significant cause of mortality. Oxidative stress, neuroinflammation, and neurotransmitter imbalances are recognized as prominent pathogenic factors contributing to cognitive deficits and neurobehavioral anomalies. Consequently, preventing neurodegenerative and neuropsychiatric diseases has surfaced as a pivotal challenge in contemporary public health. This review explores the investigation of neurodegenerative and neuropsychiatric disorders using both synthetic and natural bioactive compounds. A central focus lies on melatonin, a neuroregulatory hormone secreted by the pineal gland in response to light-dark cycles. Melatonin, an amphiphilic molecule, assumes multifaceted roles, including scavenging free radicals, modulating energy metabolism, and synchronizing circadian rhythms. Noteworthy for its robust antioxidant and antiapoptotic properties, melatonin exhibits diverse neuroprotective effects. The inherent attributes of melatonin position it as a potential key player in the pathophysiology of neurological disorders. Preclinical and clinical studies have demonstrated melatonin's efficacy in alleviating neuropathological symptoms across neurodegenerative and neuropsychiatric conditions (depression, schizophrenia, bipolar disorder, and autism spectrum disorder). The documented neuroprotective prowess of melatonin introduces novel therapeutic avenues for addressing neurodegenerative and psychiatric disorders. This comprehensive review encompasses many of melatonin's applications in treating diverse brain disorders. Despite the strides made, realizing melatonin's full neuroprotective potential necessitates further rigorous clinical investigations. By unravelling the extended neuroprotective benefits of melatonin, future studies promise to deepen our understanding and augment the therapeutic implications against neurological deficits.
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Affiliation(s)
- Aditi Giri
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy Moga, Punjab, India
| | - Sidharth Mehan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy Moga, Punjab, India.
- IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India.
| | - Zuber Khan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy Moga, Punjab, India
- IK Gujral Punjab Technical University, Jalandhar, Punjab, 144603, India
| | | | - Acharan S Narula
- Narula Research, LLC, 107 Boulder Bluff, Chapel Hill, NC, 27516, USA
| | - Reni Kalfin
- Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 23, Sofia, 1113, Bulgaria
- Department of Healthcare, South-West University "NeofitRilski", Ivan Mihailov St. 66, Blagoevgrad, 2700, Bulgaria
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Daiber A, Frenis K, Kuntic M, Li H, Wolf E, Kilgallen AB, Lecour S, Van Laake LW, Schulz R, Hahad O, Münzel T. Redox Regulatory Changes of Circadian Rhythm by the Environmental Risk Factors Traffic Noise and Air Pollution. Antioxid Redox Signal 2022; 37:679-703. [PMID: 35088601 PMCID: PMC9618394 DOI: 10.1089/ars.2021.0272] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 12/31/2021] [Indexed: 12/13/2022]
Abstract
Significance: Risk factors in the environment such as air pollution and traffic noise contribute to the development of chronic noncommunicable diseases. Recent Advances: Epidemiological data suggest that air pollution and traffic noise are associated with a higher risk for cardiovascular, metabolic, and mental disease, including hypertension, heart failure, myocardial infarction, diabetes, arrhythmia, stroke, neurodegeneration, depression, and anxiety disorders, mainly by activation of stress hormone signaling, inflammation, and oxidative stress. Critical Issues: We here provide an in-depth review on the impact of the environmental risk factors air pollution and traffic noise exposure (components of the external exposome) on cardiovascular health, with special emphasis on the role of environmentally triggered oxidative stress and dysregulation of the circadian clock. Also, a general introduction on the contribution of circadian rhythms to cardiovascular health and disease as well as a detailed mechanistic discussion of redox regulatory pathways of the circadian clock system is provided. Future Directions: Finally, we discuss the potential of preventive strategies or "chrono" therapy for cardioprotection. Antioxid. Redox Signal. 37, 679-703.
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Affiliation(s)
- Andreas Daiber
- Molecular Cardiology, Department of Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Katie Frenis
- Molecular Cardiology, Department of Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Marin Kuntic
- Molecular Cardiology, Department of Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Huige Li
- Department of Pharmacology, Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Eva Wolf
- Structural Chronobiology, Institute of Molecular Physiology, Johannes Gutenberg University, Mainz, Germany
- Institute of Molecular Biology, Mainz, Germany
| | - Aoife B. Kilgallen
- Division Heart and Lungs, Regenerative Medicine Centre, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Sandrine Lecour
- Hatter Institute for Cardiovascular Research in Africa, University of Cape Town, Cape Town, South Africa
| | - Linda W. Van Laake
- Division Heart and Lungs, Regenerative Medicine Centre, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Rainer Schulz
- Institute for Physiology, Justus-Liebig University Giessen, Giessen, Germany
| | - Omar Hahad
- Molecular Cardiology, Department of Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
| | - Thomas Münzel
- Molecular Cardiology, Department of Cardiology 1, Medical Center of the Johannes Gutenberg University, Mainz, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Mainz, Germany
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Bal NB, Bostanci A, Sadi G, Dönmez MO, Uludag MO, Demirel-Yilmaz E. Resveratrol and regular exercise may attenuate hypertension-induced cardiac dysfunction through modulation of cellular stress responses. Life Sci 2022; 296:120424. [PMID: 35196531 DOI: 10.1016/j.lfs.2022.120424] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/07/2022] [Accepted: 02/16/2022] [Indexed: 01/26/2023]
Abstract
AIMS Hypertension is one of the major causes of cardiac damage. In this study, the effects of resveratrol supplementation and regular exercise on hypertension-induced cellular stress responses of myocardium were compared. MAIN METHODS Hypertension was induced in male Wistar rats by deoxycorticosterone-acetate + salt administration for 12 weeks. Resveratrol and regular exercise were applied for the last six weeks. In addition to biochemical and molecular examinations, isoprenaline, phenylephrine and, acetylcholine-mediated contractions and sinus rate were recorded in the isolated cardiac tissues. KEY FINDINGS Resveratrol and regular exercise reduced systolic blood pressure in hypertensive rats. The altered adrenergic and cholinergic responses of the right atrium and left papillary muscles in hypertension were separately improved by resveratrol and regular exercise. Resveratrol and regular exercise decreased plasma and cardiac total antioxidant capacity and, augmented the expression of antioxidant genes in hypertensive rats. While regular exercise restored the increase in p-PERK expression associated with endoplasmic reticulum stress and decrease in mitophagic marker PINK1 expression, resveratrol only ameliorated PINK1 expression in hypertensive rats. Resveratrol and exercise training suppressed hypertension-induced NLRP3 inflammasome activation by reversing the increase in NLRP3, p-NF-κB expression and the mature-IL-1β/pro-IL-1β and cleaved-caspase-1/pro-caspase-1 ratio. Resveratrol and exercise enhanced mRNA expression of caspase-3, bax, and bcl-2 involved in the apoptotic pathway, but attenuated phosphorylation of stress-related mitogenic proteins p38 and JNK induced by hypertension. SIGNIFICANCE Our study demonstrated the protective effect of resveratrol and exercise on hypertension-induced cardiac dysfunction by modulating cellular stress responses including oxidative stress, ER stress, mitophagy, NLRP3 inflammasome-mediated inflammation, and mitogenic activation.
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Affiliation(s)
- Nur Banu Bal
- Gazi University, Faculty of Pharmacy, Department of Pharmacology, Etiler, 06330 Ankara, Turkey.
| | - Aykut Bostanci
- Karamanoglu Mehmetbey University, K.Ö. Faculty of Science, Department of Biology, Karaman 70100, Turkey
| | - Gökhan Sadi
- Karamanoglu Mehmetbey University, K.Ö. Faculty of Science, Department of Biology, Karaman 70100, Turkey
| | - Muhammet Oguzhan Dönmez
- Gazi University, Faculty of Pharmacy, Department of Pharmacology, Etiler, 06330 Ankara, Turkey
| | - Mecit Orhan Uludag
- Gazi University, Faculty of Pharmacy, Department of Pharmacology, Etiler, 06330 Ankara, Turkey
| | - Emine Demirel-Yilmaz
- Ankara University, Faculty of Medicine, Department of Medical Pharmacology, Sihhiye, 06100 Ankara, Turkey
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Swimming Attenuates Blood Pressure and Oxidative Stress in Hypertensive Rats. SERBIAN JOURNAL OF EXPERIMENTAL AND CLINICAL RESEARCH 2021. [DOI: 10.2478/sjecr-2020-0006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract
Hypertension presents one of the main risk factors for cardiovascular diseases which are the leading cause of morbidity and mortality worldwide. Structural and mechanical changes of the heart and blood vessels as well as overproduction of reactive oxygen species may occur due to the increased blood pressure. Therewith, the goal of our study was to estimate the effects and duration of swimming as a possible therapy approach on blood pressure and oxidative stress parameters in normotensive and hypertensive rats. The study was conducted on 60 male Wistar albino rats divided into two groups, normotensive and hypertensive rats. Each of these groups was divided into three subgroups according to the swimming protocol. The swimming training was kept constant (60 min/day, for five days a week) with two days of rest. After six or nine weeks of the swimming protocol, blood pressure and oxidative stress markers were measured. The control group rats were put in water for one minute a day, in order to avoid water-induced stress. Training significantly reduced systolic blood pressure in hypertensive rats, while diastolic pressure did not change in the group that swam six or nine weeks. The results showed that swimming increases the activity of all measured antioxidative parameters, while values of prooxidants varied depending on the training protocol. Our results confirmed that swimming, as an aerobic exercise, decreases blood pressure and has time-dependent positive system adaptations, especially on the antioxidant parameters.
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Valenzuela-Melgarejo FJ, Lagunas C, Carmona-Pastén F, Jara-Medina K, Delgado G. Supraphysiological Role of Melatonin Over Vascular Dysfunction of Pregnancy, a New Therapeutic Agent? Front Physiol 2021; 12:767684. [PMID: 34867473 PMCID: PMC8635235 DOI: 10.3389/fphys.2021.767684] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 10/07/2021] [Indexed: 11/25/2022] Open
Abstract
Hypertension can be induced by the disruption of factors in blood pressure regulation. This includes several systems such as Neurohumoral, Renin-angiotensin-aldosterone, the Circadian clock, and melatonin production, which can induce elevation and non-dipping blood pressure. Melatonin has a supraphysiological role as a chronobiotic agent and modulates vascular system processes via pro/antiangiogenic factors, inflammation, the immune system, and oxidative stress regulation. An elevation of melatonin production is observed during pregnancy, modulating the placenta and fetus’s physiological functions. Their impairment production can induce temporal desynchronization of cell proliferation, differentiation, or invasion from trophoblast cells results in vascular insufficiencies, elevating the risk of poor fetal/placental development. Several genes are associated with vascular disease and hypertension during pregnancy via impaired inflammatory response, hypoxia, and oxidative stress, such as cytokines/chemokines IL-1β, IL-6, IL-8, and impairment expression in endothelial cells/VSMCs of HIF1α and eNOS genes. Pathological placentas showed differentially expressed genes (DEG), including vascular genes as CITED2, VEGF, PL-II, PIGF, sFLT-1, and sENG, oncogene JUNB, scaffolding protein CUL7, GPER1, and the pathways of SIRT/AMPK and MAPK/ERK. Additionally, we observed modification of subunits of NADPH oxidase and extracellular matrix elements, i.e., Glypican and Heparanase and KCa channel. Mothers with a low level of melatonin showed low production of proangiogenic factor VEGF, increasing the risk of preeclampsia, premature birth, and abortion. In contrast, melatonin supplementation can reduce systolic pressure, prevent oxidative stress, induce the activation of the antioxidants system, and lessen proteinuria and serum level of sFlt-1. Moreover, melatonin can repair the endothelial damage from preeclampsia at the placenta level, increasing PIGF, Nrf-2, HO-1 production and reducing critical markers of vascular injury during the pregnancy. Melatonin also restores the umbilical and uterine blood flow after oxidative stress and inhibits vascular inflammation and VCAM-1, Activin-A, and sEng production. The beneficial effects of melatonin over pathological pregnancies can be partially observed in normal pregnancies, suggesting the dual role of/over placental physiology could contribute to protection and have therapeutic applications in vascular pathologies of pregnancies in the future.
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Affiliation(s)
- Francisco J Valenzuela-Melgarejo
- Laboratory of Molecular Cell Biology, Department of Basic Sciences, Universidad del Bío-Bío, Campus Fernando May, Chillán, Chile
| | - Constanza Lagunas
- Laboratory of Molecular Cell Biology, Department of Basic Sciences, Universidad del Bío-Bío, Campus Fernando May, Chillán, Chile
| | - Fabiola Carmona-Pastén
- Laboratory of Molecular Cell Biology, Department of Basic Sciences, Universidad del Bío-Bío, Campus Fernando May, Chillán, Chile
| | - Kevins Jara-Medina
- Laboratory of Molecular Cell Biology, Department of Basic Sciences, Universidad del Bío-Bío, Campus Fernando May, Chillán, Chile
| | - Gustavo Delgado
- Laboratory of Molecular Cell Biology, Department of Basic Sciences, Universidad del Bío-Bío, Campus Fernando May, Chillán, Chile
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Yartsev VN. Effect of Nephrectomy on Arterial Reactivity in Spontaneously Hypertensive Rats. J EVOL BIOCHEM PHYS+ 2021. [DOI: 10.1134/s0022093021050124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Li Y, Huang Y, Cheng X, He Y, Hu X. Whole body hypoxic preconditioning-mediated multiorgan protection in db/db mice via nitric oxide-BDNF-GSK-3β-Nrf2 signaling pathway. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2021; 25:281-296. [PMID: 34187947 PMCID: PMC8255126 DOI: 10.4196/kjpp.2021.25.4.281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/18/2020] [Accepted: 09/19/2020] [Indexed: 11/15/2022]
Abstract
The beneficial effects of hypoxic preconditioning are abolished in the diabetes. The present study was designed to investigate the protective effects and mechanisms of repeated episodes of whole body hypoxic preconditioning (WBHP) in db/db mice. The protective effects of preconditioning were explored on diabetesinduced vascular dysfunction, cognitive impairment and ischemia-reperfusion (IR)-induced increase in myocardial injury. Sixteen-week old db/db (diabetic) and C57BL/6 (non-diabetic) mice were employed. There was a significant impairment in cognitive function (Morris Water Maze test), endothelial function (acetylcholineinduced relaxation in aortic rings) and a significant increase in IR-induced heart injury (Langendorff apparatus) in db/db mice. WBHP stimulus was given by exposing mice to four alternate cycles of low (8%) and normal air O2 for 10 min each. A single episode of WBHP failed to produce protection; however, two and three episodes of WBHP significantly produced beneficial effects on the heart, brain and blood vessels. There was a significant increase in the levels of brain-derived neurotrophic factor (BDNF) and nitric oxide (NO) in response to 3 episodes of WBHP. Moreover, pretreatment with the BDNF receptor, TrkB antagonist (ANA-12) and NO synthase inhibitor (LNAME) attenuated the protective effects imparted by three episodes of WBHP. These pharmacological agents abolished WBHP-induced restoration of p-GSK-3β/GSK-3β ratio and Nrf2 levels in IR-subjected hearts. It is concluded that repeated episodes of WHBP attenuate cognitive impairment, vascular dysfunction and enhancement in IRinduced myocardial injury in diabetic mice be due to increase in NO and BDNF levels that may eventually activate GSK-3β and Nrf2 signaling pathway to confer protection.
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Affiliation(s)
- Yuefang Li
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
| | - Yan Huang
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
| | - Xi Cheng
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
| | - Youjun He
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
| | - Xin Hu
- Cadre Ward the No.901 Hospital of the Joint Logistics Support Unit of the Chinese People's Liberation Army, Hefei, Anhui 230031, P.R. China
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Mechanical tibial loading remotely suppresses brain tumors by dopamine-mediated downregulation of CCN4. Bone Res 2021; 9:26. [PMID: 34031366 PMCID: PMC8144433 DOI: 10.1038/s41413-021-00144-2] [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: 07/02/2020] [Revised: 12/09/2020] [Accepted: 12/20/2020] [Indexed: 11/08/2022] Open
Abstract
Mechanical loading to the bone is known to be beneficial for bone homeostasis and for suppressing tumor-induced osteolysis in the loaded bone. However, whether loading to a weight-bearing hind limb can inhibit distant tumor growth in the brain is unknown. We examined the possibility of bone-to-brain mechanotransduction using a mouse model of a brain tumor by focusing on the response to Lrp5-mediated Wnt signaling and dopamine in tumor cells. The results revealed that loading the tibia with elevated levels of tyrosine hydroxylase, a rate-limiting enzyme in dopamine synthesis, markedly reduced the progression of the brain tumors. The simultaneous application of fluphenazine (FP), an antipsychotic dopamine modulator, enhanced tumor suppression. Dopamine and FP exerted antitumor effects through the dopamine receptors DRD1 and DRD2, respectively. Notably, dopamine downregulated Lrp5 via DRD1 in tumor cells. A cytokine array analysis revealed that the reduction in CCN4 was critical for loading-driven, dopamine-mediated tumor suppression. The silencing of Lrp5 reduced CCN4, and the administration of CCN4 elevated oncogenic genes such as MMP9, Runx2, and Snail. In summary, this study demonstrates that mechanical loading regulates dopaminergic signaling and remotely suppresses brain tumors by inhibiting the Lrp5-CCN4 axis via DRD1, indicating the possibility of developing an adjuvant bone-mediated loading therapy.
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Involvement of amylin B-H2S-connexin 43 signaling pathway in vascular dysfunction and enhanced ischemia-reperfusion-induced myocardial injury in diabetic rats. Biosci Rep 2021; 40:224904. [PMID: 32436936 PMCID: PMC7280474 DOI: 10.1042/bsr20194154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 04/24/2020] [Accepted: 04/29/2020] [Indexed: 11/17/2022] Open
Abstract
The present study was designed to investigate the role of amylin, H2S, and connexin 43 in vascular dysfunction and enhanced ischemia–reperfusion (I/R)-induced myocardial injury in diabetic rats. A single dose of streptozotocin (65 mg/kg) was employed to induce diabetes mellitus. After 8 weeks, there was a significant decrease in the plasma levels of amylin, an increase in I/R injury to isolated hearts (increase in CK-MB and cardiac troponin release) on the Langendorff apparatus. Moreover, there was a significant impairment in vascular endothelium function as assessed by quantifying acetylcholine-induced relaxation in norepinephrine-precontracted mesenteric arteries. There was also a marked decrease in the expression of H2S and connexin 43 in the hearts following I/R injury in diabetic rats. Treatment with amylin agonist, pramlintide (100 and 200 µg/kg), and H2S donor, NaHS (10 and 20 μmol/kg) for 2 weeks improved the vascular endothelium function, abolished enhanced myocardial injury and restored the levels of H2S along with connexin 43 in diabetic animals. However, pramlintide and NaHS failed to produce these effects the presence of gap junction blocker, carbenoxolone (20 and 40 mg/kg). Carbenoxolone also abolished the myocardial levels of connexin 43 without affecting the plasma levels of amylin and myocardial levels of H2S. The decrease in the amylin levels with a consequent reduction in H2S and connexin 43 may contribute to inducing vascular dysfunction and enhancing I/R-induced myocardial injury in diabetic rats.
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Costa HA, Dias CJM, Martins VDA, de Araujo SA, da Silva DP, Mendes VS, de Oliveira MNS, Mostarda CT, Borges ACR, Ribeiro RM, Filho NS. Effect of treatment with carvacrol and aerobic training on cardiovascular function in spontaneously hypertensive rats. Exp Physiol 2021; 106:891-901. [PMID: 33595154 DOI: 10.1113/ep089235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 02/15/2021] [Indexed: 12/29/2022]
Abstract
NEW FINDINGS What is the central question of this study? Can two non-drug therapies, carvacrol and aerobic physical training, together have additive effects on the reduction of cardiovascular risks and control of arterial hypertension? What is the main finding and its importance? The oral use of carvacrol (20 mg/kg/day) can control sustained hypertension in spontaneously hypertensive rats, and when this use is associated with aerobic physical training, there is a more pronounced effect on the reduction of blood pressure values, making these therapies an adjunct option in the drug treatment of hypertension. ABSTRACT Systemic arterial hypertension is considered the foremost cardiovascular risk factor, and it is important to examine different therapies that help prevent and treat it, especially when associated with other cardiovascular risk factors. In this context, it is known that both carvacrol and aerobic physical training benefit the cardiovascular system. This study investigated the effects of treatment with carvacrol combined with aerobic exercise on hypertensive rats with cardiovascular risk parameters. We used an experimental design with six groups: normotensive control (Wistar rats); hypertensive control (spontaneously hypertensive rats, SHR); positive control rats treated with amlodipine (Aml-20 mg); rats treated with carvacrol (Carv-20 mg); rats trained with exercise (Exer); and rats treated with carvacrol and exercise (ExerCarv). The treatment lasted for 4 weeks, monitoring heart rate and systolic blood pressure (SBP). At the end of the treatment, vascular reactivity tests were performed in addition to biochemical measurements of urea, creatinine, aspartate aminotransferase, alanine aminotransferase, triglycerides, total cholesterol, high density lipoprotein cholesterol, low density lipoprotein cholesterol, very low density lipoprotein cholesterol, atherogenic indexes, relative heart weight and histopathological analysis of cardiac perivascular tissue. Significant reductions in SBP were observed after the training period, with the ExerCarv group showing a greater magnitude of reduction (∆SBP = 88 ± 10.0 mmHg, 42%). This group also experienced reductions in atherogenic indices and improvement in all analysed lipid parameters, with no differences observed in the Exer group. The findings indicated that the interaction between aerobic exercise and carvacrol offers a greater BP reduction. Exercise is particularly effective for controlling biochemical parameters of cardiovascular risk, regardless of carvacrol use.
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Affiliation(s)
- Herikson Araujo Costa
- Programa de Pós-Graduação em Ciências da Saúde, Federal University of Maranhão, São Luís, Maranhão, Brazil.,Núcleo de Atividade Física e Saúde (NAFS) and Laboratório de Adaptações Cardiorrenais ao Exercício Físico (LACE), Federal University of Maranhão, Pinheiro, Maranhão, Brazil
| | - Carlos José Moraes Dias
- Programa de Pós-graduação em Educação Física, Federal University of Maranhão, São Luís, Maranhão, Brazil.,Programa de Pós-graduação de Rede Nordeste de Biotecnologia (Renorbio), Federal University of Maranhão, São Luís, Maranhão, Brazil.,Núcleo de Atividade Física e Saúde (NAFS) and Laboratório de Adaptações Cardiorrenais ao Exercício Físico (LACE), Federal University of Maranhão, Pinheiro, Maranhão, Brazil
| | - Vicenilma de Andrade Martins
- Programa de Pós-graduação de Rede Nordeste de Biotecnologia (Renorbio), Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Sandra Alves de Araujo
- Programa de Pós-graduação de Rede Nordeste de Biotecnologia (Renorbio), Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Daiane Pereira da Silva
- Programa de Pós-graduação em Educação Física, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Vinícius S Mendes
- Pharmacology Laboratory, Department of Physiological Science, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | | | - Cristiano Teixeira Mostarda
- Programa de Pós-graduação em Educação Física, Federal University of Maranhão, São Luís, Maranhão, Brazil.,Programa de Pós-graduação de Rede Nordeste de Biotecnologia (Renorbio), Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Antônio Carlos Romão Borges
- Programa de Pós-graduação de Rede Nordeste de Biotecnologia (Renorbio), Federal University of Maranhão, São Luís, Maranhão, Brazil.,Pharmacology Laboratory, Department of Physiological Science, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Rachel Melo Ribeiro
- Programa de Pós-graduação em Educação Física, Federal University of Maranhão, São Luís, Maranhão, Brazil.,Pharmacology Laboratory, Department of Physiological Science, Federal University of Maranhão, São Luís, Maranhão, Brazil
| | - Natalino Salgado Filho
- Programa de Pós-Graduação em Ciências da Saúde, Federal University of Maranhão, São Luís, Maranhão, Brazil
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Rysz J, Franczyk B, Ławiński J, Gluba-Brzózka A. Oxidative Stress in ESRD Patients on Dialysis and the Risk of Cardiovascular Diseases. Antioxidants (Basel) 2020; 9:antiox9111079. [PMID: 33153174 PMCID: PMC7693989 DOI: 10.3390/antiox9111079] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 10/22/2020] [Accepted: 10/27/2020] [Indexed: 02/07/2023] Open
Abstract
Chronic kidney disease is highly prevalent worldwide. The decline of renal function is associated with inadequate removal of a variety of uremic toxins that exert detrimental effects on cells functioning, thus affecting the cardiovascular system. The occurrence of cardiovascular aberrations in CKD is related to the impact of traditional risk factors and non-traditional CKD-associated risk factors, including anemia; inflammation; oxidative stress; the presence of some uremic toxins; and factors related to the type, frequency of dialysis and the composition of dialysis fluid. Cardiovascular diseases are the most frequent cause for the deaths of patients with all stages of renal failure. The kidney is one of the vital sources of antioxidant enzymes, therefore, the impairment of this organ is associated with decreased levels of these enzymes as well as increased levels of pro-oxidants. Uremic toxins have been shown to play a vital role in the onset of oxidative stress. Hemodialysis itself also enhances oxidative stress. Elevated oxidative stress has been demonstrated to be strictly related to kidney and cardiac damage as it aggravates kidney dysfunction and induces cardiac hypertrophy. Antioxidant therapies may prove to be beneficial since they can decrease oxidative stress, reduce uremic cardiovascular toxicity and improve survival.
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Affiliation(s)
- Jacek Rysz
- Department of Nephrology, Hypertension and Family Medicine, Medical University of Lodz, 90-419 Łódź, Poland; (J.R.); (B.F.)
| | - Beata Franczyk
- Department of Nephrology, Hypertension and Family Medicine, Medical University of Lodz, 90-419 Łódź, Poland; (J.R.); (B.F.)
| | - Janusz Ławiński
- Department of Urology, Institute of Medical Sciences, Medical College of Rzeszow University, 35-959 Rzeszow, Poland;
| | - Anna Gluba-Brzózka
- Department of Nephrology, Hypertension and Family Medicine, Medical University of Lodz, 90-419 Łódź, Poland; (J.R.); (B.F.)
- Correspondence: ; Tel.: +48-42-639-3750
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12
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Famularo G. Syndrome of Inappropriate Antidiuretic Hormone Secretion in a Patient Treated With Melatonin. Ann Pharmacother 2020; 55:131-132. [PMID: 32590906 DOI: 10.1177/1060028020936997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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13
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Wu D, Fan Y, Liu S, Woollam MD, Sun X, Murao E, Zha R, Prakash R, Park C, Siegel AP, Liu J, Agarwal M, Li BY, Yokota H. Loading-induced antitumor capability of murine and human urine. FASEB J 2020; 34:7578-7592. [PMID: 32293076 DOI: 10.1096/fj.202000096r] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 03/09/2020] [Accepted: 03/23/2020] [Indexed: 12/15/2022]
Abstract
While urine has been considered as a useful bio-fluid for health monitoring, its dynamic changes to physical activity are not well understood. We examined urine's possible antitumor capability in response to medium-level, loading-driven physical activity. Urine was collected from mice subjected to 5-minute skeletal loading and human individuals before and after 30-minute step aerobics. Six cancer cell lines (breast, prostate, and pancreas) and a mouse model of the mammary tumor were employed to evaluate the effect of urine. Compared to urine collected prior to loading, urine collected post-activity decreased the cellular viability, proliferation, migration, and invasion of tumor cells, as well as tumor weight in the mammary fat pad. Detection of urinary volatile organic compounds and ELISA assays showed that the loading-conditioned urine reduced cholesterol and elevated dopamine and melatonin. Immunohistochemical fluorescent images presented upregulation of the rate-limiting enzymes for the production of dopamine and melatonin in the brain. Molecular analysis revealed that the antitumor effect was linked to the reduction in molecular vinculin-linked molecular force as well as the downregulation of the Lrp5-CSF1-CD105 regulatory axis. Notably, the survival rate for the high expression levels of Lrp5, CSF1, and CD105 in tumor tissues was significantly lowered in the Cancer Genome Atlas database. Collectively, this study revealed that 5- or 10-minute loading-driven physical activity was sufficient to induce the striking antitumor effect by activating the neuronal signaling and repressing cholesterol synthesis. The result supported the dual role of loading-conditioned urine as a potential tumor suppressor and a source of diagnostic biomarkers.
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Affiliation(s)
- Di Wu
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China.,Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Yao Fan
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China.,Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Shengzhi Liu
- Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Mark D Woollam
- Department of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA.,Integrative Nanosystems Development Institute, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Xun Sun
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China.,Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Eiji Murao
- Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA.,Graduate School of Engineering, Mie University, Mie, Japan
| | - Rongrong Zha
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China.,Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Rahul Prakash
- Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Charles Park
- Department of Physics, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Amanda P Siegel
- Department of Chemistry and Chemical Biology, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA.,Integrative Nanosystems Development Institute, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Jing Liu
- Department of Physics, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA.,Simon Cancer Research Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Mangilal Agarwal
- Integrative Nanosystems Development Institute, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA
| | - Bai-Yan Li
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China
| | - Hiroki Yokota
- Department of Pharmacology, School of Pharmacy, Harbin Medical University, Harbin, China.,Department of Biomedical Engineering, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA.,Integrative Nanosystems Development Institute, Indiana University Purdue University Indianapolis, Indianapolis, IN, USA.,Simon Cancer Research Center, Indiana University School of Medicine, Indianapolis, IN, USA.,Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA
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14
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Liu X, Yang R, Bai W, Xu X, Bi F, Zhu M, Dou X, Li H. Exploring the role of orexin B-sirtuin 1-HIF-1α in diabetes-mellitus induced vascular endothelial dysfunction and associated myocardial injury in rats. Life Sci 2019; 254:117041. [PMID: 31715188 DOI: 10.1016/j.lfs.2019.117041] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 11/01/2019] [Accepted: 11/02/2019] [Indexed: 01/02/2023]
Abstract
AIM The present study explored the role and possible interrelationship between orexin B-sirtuin 1-HIF-1α signaling pathways in diabetes-mellitus induced vascular dysfunction and enhancement in myocardial injury. MATERIAL AND METHODS Streptozotocin (60 mg/kg) was employed to induce diabetes mellitus in male Wistar albino rats, which were kept for eight weeks. The vascular function was noted by assessing acetylcholine-induced relaxation in norepinephrine precontracted mesenteric arteries. The hearts were subjected to ischemia-reperfusion injury on the Langendorff apparatus. Myocardial injury was assessed by noting the release of CK-MB, cardiac troponin and measuring myocardial infarction. The levels of orexin B, sirtuin 1 and HIF-1α were measured. YNT-185 (orexin B type 2 receptor agonist), STR2104 (sirtuin 1 agonist) and EX527 (sirtuin 1 antagonist) were employed as pharmacological tools. RESULTS Diabetes led to significant development of vascular dysfunction and enhanced ischemia-reperfusion injury in isolated hearts. There was a significant decrease in the levels of orexin B, sirtuin 1 and HIF-1α in diabetic animals. Treatment with YNT-185 and/or STR2104 significantly attenuated the diabetes-induced increase in myocardial injury and vascular dysfunction. Co-administration of EX527 abolished the effects of YNT-185 suggesting orexin B-mediated effects may be through activation of sirtuin 1. Moreover, YNT-185-induced increase in the expression of sirtuin 1 and HIF-1α was also abolished in the presence of EX527. CONCLUSION Diabetes-induced significant decline in orexin B levels in the plasma along with a decrease in the expression of sirtuin 1 and HIF-1α in the heart following ischemia-reperfusion injury may possibly contribute in exacerbating the myocardial injury and vascular dysfunction.
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Affiliation(s)
- Xiaoyong Liu
- Department of Cardiovascular, the Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, China.
| | - Rui Yang
- Forensic Medicine Institution, Kunming Medical University, Kunming, 650500, China.
| | - Wenwei Bai
- Department of Cardiovascular, the Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, China.
| | - Xiang Xu
- Department of Cardiovascular, the Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, China.
| | - Feng Bi
- Department of Cardiovascular, the Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, China.
| | - Min Zhu
- Department of Cardiovascular, the Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, China.
| | - Xingkui Dou
- Department of Cardiovascular, the Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, China.
| | - Hu Li
- Department of Cardiovascular, the Second Affiliated Hospital of Kunming Medical University, Kunming, 650101, China.
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15
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Nishi EE, Almeida VR, Amaral FG, Simon KA, Futuro-Neto HA, Pontes RB, Cespedes JG, Campos RR, Bergamaschi CT. Melatonin attenuates renal sympathetic overactivity and reactive oxygen species in the brain in neurogenic hypertension. Hypertens Res 2019; 42:1683-1691. [PMID: 31316170 DOI: 10.1038/s41440-019-0301-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 06/20/2019] [Accepted: 06/26/2019] [Indexed: 01/26/2023]
Abstract
Sympathetic overactivation contributes to the pathogenesis of both experimental and human hypertension. We have previously reported that oxidative stress in sympathetic premotor neurons leads to arterial baroreflex dysfunction and increased sympathetic drive to the kidneys in an experimental model of neurogenic hypertension. In this study, we hypothesized that melatonin, a potent antioxidant, may be protective in the brainstem regions involved in the tonic and reflex control of blood pressure (BP) in renovascular hypertensive rats. Neurogenic hypertension was induced by placing a silver clip (gap of 0.2 mm) around the left renal artery, and after 5 weeks of renal clip placement, the rats were treated orally with melatonin (30 mg/kg/day) by gavage for 15 days. At the end of melatonin treatment, we evaluated baseline mean arterial pressure (MAP), renal sympathetic nerve activity (rSNA), and the baroreflex control of heart rate (HR) and rSNA. Reactive oxygen species (ROS) were detected within the brainstem regions by dihydroethidium staining. Melatonin treatment effectively reduced baseline MAP and sympathoexcitation to the ischemic kidney in renovascular hypertensive rats. The baroreflex control of HR and rSNA were improved after melatonin treatment in the hypertensive group. Moreover, there was a preferential decrease in ROS within the rostral ventrolateral medulla (RVLM) and the nucleus of the solitary tract (NTS). Therefore, our study indicates that melatonin is effective in reducing renal sympathetic overactivity associated with decreased ROS in brainstem regions that regulate BP in an experimental model of neurogenic hypertension.
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Affiliation(s)
- Erika E Nishi
- Department of Physiology, Campus São Paulo, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Vitor R Almeida
- Department of Physiology, Campus São Paulo, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Fernanda G Amaral
- Department of Physiology, Campus São Paulo, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Karin A Simon
- Department of Biological Sciences, Campus Diadema, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Roberto B Pontes
- Department of Physiology, Campus São Paulo, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Juliana G Cespedes
- Institute of Science and Technology, Campus São José dos Campos, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Ruy R Campos
- Department of Physiology, Campus São Paulo, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Cássia T Bergamaschi
- Department of Physiology, Campus São Paulo, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil.
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16
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Prehypertension exercise training attenuates hypertension and cardiac hypertrophy accompanied by temporal changes in the levels of angiotensin II and angiotensin (1-7). Hypertens Res 2019; 42:1745-1756. [DOI: 10.1038/s41440-019-0297-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 04/07/2019] [Accepted: 06/02/2019] [Indexed: 12/21/2022]
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17
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Ye F, Wu Y, Chen Y, Xiao D, Shi L. Impact of moderate- and high-intensity exercise on the endothelial ultrastructure and function in mesenteric arteries from hypertensive rats. Life Sci 2019; 222:36-45. [PMID: 30825543 DOI: 10.1016/j.lfs.2019.01.058] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 01/16/2019] [Accepted: 01/16/2019] [Indexed: 12/20/2022]
Abstract
Oxidative stress (OS) influences vascular function and structure in spontaneously hypertensive rats (SHRs). It is also responsible for the decreased nitric oxide (NO) bioavailability that influences endothelial vasodilation. The effects of high-intensity exercise on endothelial function and ultrastructure in hypertension remain unknown. Thus, this study investigated the effects of moderate- and high-intensity exercise on hypertension-associated endothelial dysfunction and ultrastructural remodeling. Moderate-intensity (SHR-M) and high-intensity (SHRH) aerobic exercise training groups were compared in age-matched sedentary SHRs (SHRC) and normotensive Wistar-Kyoto rats (WKY-C). The results showed that the endothelial ultrastructure was impaired in the SHR-H and SHR-C groups. Glutathione peroxidase levels were significantly increased in the SHR-M group compared to the SHR-C group. MDA content was higher in the SHR-H group than in the SHR-C group, but the levels of antioxidant enzymes did not increase accordingly. Apocynin scavenging reactive oxygen species (ROS) ameliorated endothelium-dependent vasodilator function in the SHR-H group. However, the SHR-M and WKY-C groups abolished the increased vasodilation induced by apocynin. L-NAME, a NO synthase inhibitor, was applied to isolated mesenteric arteries (MAs) to evaluate NO contribution. Moderate-intensity exercise reversed the decreased NO contribution to MAs in hypertension, and high-intensity exercise aggravated this change. These data suggest that moderate-intensity exercise ameliorated adverse remodeling of the endothelial ultrastructure and function in hypertension by decreasing oxidative stress and increasing NO contribution. However, high-intensity exercise exacerbated all of these changes by increasing OS and ROS contribution, and decreasing NO contribution.
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Affiliation(s)
- Fang Ye
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China
| | - Ying Wu
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China
| | - Yu Chen
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China
| | - Daliao Xiao
- Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, USA.
| | - Lijun Shi
- Department of Exercise Physiology, Beijing Sport University, Beijing 100084, China.
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18
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Rahman A, Hasan AU, Kobori H. Melatonin in chronic kidney disease: a promising chronotherapy targeting the intrarenal renin-angiotensin system. Hypertens Res 2019; 42:920-923. [PMID: 30760889 DOI: 10.1038/s41440-019-0223-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 12/30/2018] [Accepted: 01/01/2019] [Indexed: 12/11/2022]
Affiliation(s)
- Asadur Rahman
- Department of Pharmacology, School of Medicine, International University of Health and Welfare, 4-2 Kozunomori, Narita, Chiba, 286-8686, Japan
| | - Arif Ul Hasan
- Department of Pharmacology, School of Medicine, International University of Health and Welfare, 4-2 Kozunomori, Narita, Chiba, 286-8686, Japan
| | - Hiroyuki Kobori
- Department of Pharmacology, School of Medicine, International University of Health and Welfare, 4-2 Kozunomori, Narita, Chiba, 286-8686, Japan.
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19
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Hong XY, Hong X, Gu WW, Lin J, Yin WT. Cardioprotection and improvement in endothelial-dependent vasodilation during late-phase of whole body hypoxic preconditioning in spontaneously hypertensive rats via VEGF and endothelin-1. Eur J Pharmacol 2018; 842:79-88. [PMID: 30401629 DOI: 10.1016/j.ejphar.2018.10.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 10/17/2018] [Accepted: 10/24/2018] [Indexed: 12/13/2022]
Abstract
The present study was designed to investigate the effect of late phase of whole body hypoxic preconditioning on endothelial-dependent vasorelaxation and cardioprotection from ischemia-reperfusion injury in spontaneously hypertensive rats (SHR). Hypoxic preconditioning was performed by subjecting rats to four episodes of alternate exposure to low O2 (8%) and normal air O2 of 10 min each. After 24 h, the mesenteric arteries and hearts were isolated to determine the vascular function and cardioprotection from ischemia-reperfusion (I/R) injury on the Langendorff apparatus. There was a significant impairment in acetylcholine-induced relaxation in norepinephrine precontracted arteries (endothelium-dependent function) and increase in I/R-induced myocardial injury in SHR in comparison to Wistar Kyoto rats (WKY). However, hypoxic preconditioning significantly restored endothelium-dependent relaxation in SHR and attenuated I/R injury in both SHR and WKY. Hypoxic preconditioning also led to an increase in the levels of endothelin-1 (not endothelin-2 or -3), vascular endothelial growth factor-A (VEGF-A) and HIF-1α levels. Pretreatment with bevacizumab (anti-VEGF-A) and bosentan (endothelin receptor blocker) significantly attenuated hypoxic preconditioning-induced restoration of endothelium-dependent relaxation and cardioprotection from I/R injury. These interventions also attenuated the levels of VEGF-A and HIF-1α without modulating the endothelin-1 levels. It may be concluded that an increase in the endothelin-1 levels with a subsequent increase in HIF-1α and VEGF expression may possibly contribute in improving endothelium-dependent vasorelaxation and protecting hearts from I/R injury in SHR during late phase of whole body hypoxic preconditioning.
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Affiliation(s)
- Xing-Yu Hong
- Department of Vascular Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
| | - Xin Hong
- Department of Vascular Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
| | - Wei-Wei Gu
- Department of Hepatopancreatobility Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
| | - Jie Lin
- Department of Vascular Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
| | - Wei-Tian Yin
- Department of Hand Surgery, China-Japan Union Hospital of JiLin University, ChangChun 130031, China.
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