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Padovan JC, Dourado TMH, Pimenta GF, Bruder-Nascimento T, Tirapelli CR. Reactive Oxygen Species Are Central Mediators of Vascular Dysfunction and Hypertension Induced by Ethanol Consumption. Antioxidants (Basel) 2023; 12:1813. [PMID: 37891892 PMCID: PMC10604002 DOI: 10.3390/antiox12101813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/23/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
Consumption of high amounts of ethanol is a risk factor for development of cardiovascular diseases such as arterial hypertension. The hypertensive state induced by ethanol is a complex multi-factorial event, and oxidative stress is a pathophysiological hallmark of vascular dysfunction associated with ethanol consumption. Increasing levels of reactive oxygen species (ROS) in the vasculature trigger important processes underlying vascular injury, including accumulation of intracellular Ca2+ ions, reduced bioavailability of nitric oxide (NO), activation of mitogen-activated protein kinases (MAPKs), endothelial dysfunction, and loss of the anticontractile effect of perivascular adipose tissue (PVAT). The enzyme nicotinamide adenine dinucleotide phosphate (NADPH) oxidase plays a central role in vascular ROS generation in response to ethanol. Activation of the renin-angiotensin-aldosterone system (RAAS) is an upstream mechanism which contributes to NADPH oxidase stimulation, overproduction of ROS, and vascular dysfunction. This review discusses the mechanisms of vascular dysfunction induced by ethanol, detailing the contribution of ROS to these processes. Data examining the association between neuroendocrine changes and vascular oxidative stress induced by ethanol are also reviewed and discussed. These issues are of paramount interest to public health as ethanol contributes to blood pressure elevation in the general population, and it is linked to cardiovascular conditions and diseases.
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Affiliation(s)
- Júlio C. Padovan
- Laboratory of Blood and Vascular Biology, The Rockefeller University, New York, NY 10065, USA;
| | - Thales M. H. Dourado
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto 14040-902, SP, Brazil; (T.M.H.D.); (G.F.P.)
- Departamento de Enfermagem Psiquiátrica e Ciências Humanas, Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-902, SP, Brazil
| | - Gustavo F. Pimenta
- Programa de Pós-Graduação em Farmacologia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (USP), Ribeirão Preto 14040-902, SP, Brazil; (T.M.H.D.); (G.F.P.)
- Departamento de Enfermagem Psiquiátrica e Ciências Humanas, Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-902, SP, Brazil
| | - Thiago Bruder-Nascimento
- Department of Pediatrics and Vascular Medicine Institute (VMI), University of Pittsburgh, Pittsburgh, PA 15260, USA;
| | - Carlos R. Tirapelli
- Departamento de Enfermagem Psiquiátrica e Ciências Humanas, Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, University of São Paulo, Ribeirão Preto 14040-902, SP, Brazil
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Rajendran NK, Liu W, Cahill PA, Redmond EM. Caveolin-1 inhibition mediates the opposing effects of alcohol on γ-secretase activity in arterial endothelial and smooth muscle cells. Physiol Rep 2023; 11:e15544. [PMID: 36635975 PMCID: PMC9837422 DOI: 10.14814/phy2.15544] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/01/2022] [Accepted: 12/04/2022] [Indexed: 04/18/2023] Open
Abstract
Notch is important to vessel homeostasis. We investigated the mechanistic role of caveolin-1 (Cav-1) in mediating the effects of alcohol (Ethanol/EtOH) on the γ-secretase proteolytic activity necessary for Notch signaling in vascular cells. Human coronary artery endothelial cells (HCAEC) were treated with EtOH (0-50 mM), Notch ligand delta-like ligand 4 (Dll4), and the γ-secretase inhibitor DAPT. EtOH stimulated Notch signaling in HCAEC as evidenced by increased Notch receptor (N1, N4) and target gene (hrt2, hrt3) mRNA levels with the most robust response achieved at 25 mM EtOH. Ethanol (25 mM) stimulated γ-secretase proteolytic activity, to the same extent as Dll4, in HCAEC membranes. Ethanol inhibited Cav-1 mRNA and protein levels in HCAEC. Caveolin-1 negatively regulated γ-secretase activity in HCAEC as Cav-1 knockdown stimulated it, while Cav-1 overexpression inhibited it. Moreover, Cav-1 overexpression blocked the stimulatory effect of EtOH on γ-secretase activity in HCAEC. Although EtOH also inhibited Cav-1 expression in human coronary artery smooth muscle cells (HCASMC), EtOH inhibited γ-secretase activity in HCASMC in contrast to its effect in HCAEC. The inhibitory effect of EtOH on γ-secretase in HCASMC was mimicked by Cav-1 knockdown and prevented by Cav-1 overexpression, suggesting that in these cells Cav-1 positively regulates γ-secretase activity. In conclusion, EtOH differentially regulates γ-secretase activity in arterial EC and SMC, being stimulatory and inhibitory, respectively. These effects are both mediated by caveolin-1 inhibition which itself has opposite effects on γ-secretase in the two cell types. This mechanism may underlie, in part, the effects of moderate drinking on atherosclerosis.
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Affiliation(s)
- Naresh K. Rajendran
- Department of SurgeryUniversity of Rochester Medical CenterRochesterNew YorkUSA
| | - Weimin Liu
- Department of SurgeryUniversity of Rochester Medical CenterRochesterNew YorkUSA
| | - Paul A. Cahill
- Vascular Biology and Therapeutics Laboratory, School of BiotechnologyDublin City UniversityDublinIreland
| | - Eileen M. Redmond
- Department of SurgeryUniversity of Rochester Medical CenterRochesterNew YorkUSA
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Bas S, Ucak R, Sizmaz M, Hascicek S, Karsidag SH. Perivascular Injections of Botulinum Toxin Type A Versus Low Concentration of Ethanol. J Surg Res 2022; 269:218-228. [PMID: 34607144 DOI: 10.1016/j.jss.2021.08.023] [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: 04/27/2021] [Revised: 08/16/2021] [Accepted: 08/30/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND This study aimed to investigate the effect of low concentration ethanol in increasing flap viability by perioperative perivascular application and compared it with that of botulinum toxin type A (BTX-A). MATERIALS AND METHODS Twenty-seven Wistar albino rats weighing 300-350 g were used in this study. The subjects were randomly divided into three equal groups: group E (ethanol, n = 9), group B (BTX-A, n = 9), and group S (saline, n = 9). In rats, the dorsal multi-territory perforator flap was elevated, and the agents were injected. In postoperative 1 wk, flap viability and vascular endothelial growth factor levels were evaluated. Also, blood flow, microvascular density, and inflammation degree of both choke zones were assessed. RESULTS The mean flap survival area and vascular endothelial growth factor level were significantly higher in group E than in group B and S (P < 0.001). Similarly, blood flow (first choke zone, P < 0.012, and second choke zone, P < 0.001) and microvascular density (first choke zone and second choke zone, P < 0.001) were found to be higher in Group E compared to Group B and S in the evaluation performed from both choke zones. Also, significant inflammation was detected in the ethanol group. CONCLUSIONS The positive effects of BTX-A on flap viability were achieved with a low concentration of ethanol. The fact that a low concentration of ethanol increases blood flow, angiogenesis, and flap viability more than BTX-A in the first postoperative week indicates that it can be an alternative agent for perioperative use.
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Affiliation(s)
- Soysal Bas
- Department of Plastic, Reconstructive and Aesthetic Surgery, University of Health Sciences, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey.
| | - Ramazan Ucak
- Department of Pathology, University of Health Sciences, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey
| | - Mert Sizmaz
- Department of Plastic, Reconstructive and Aesthetic Surgery, University of Health Sciences, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey
| | - Seyhan Hascicek
- Department of Pathology, University of Health Sciences, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey
| | - Semra H Karsidag
- Department of Plastic, Reconstructive and Aesthetic Surgery, University of Health Sciences, Sisli Hamidiye Etfal Training and Research Hospital, Istanbul, Turkey
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Alleyne J, Dopico AM. Alcohol Use Disorders and Their Harmful Effects on the Contractility of Skeletal, Cardiac and Smooth Muscles. ADVANCES IN DRUG AND ALCOHOL RESEARCH 2021; 1:10011. [PMID: 35169771 PMCID: PMC8843239 DOI: 10.3389/adar.2021.10011] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 09/21/2021] [Indexed: 06/14/2023]
Abstract
Alcohol misuse has deleterious effects on personal health, family, societal units, and global economies. Moreover, alcohol misuse usually leads to several diseases and conditions, including alcoholism, which is a chronic condition and a form of addiction. Alcohol misuse, whether as acute intoxication or alcoholism, adversely affects skeletal, cardiac and/or smooth muscle contraction. Ethanol (ethyl alcohol) is the main effector of alcohol-induced dysregulation of muscle contractility, regardless of alcoholic beverage type or the ethanol metabolite (with acetaldehyde being a notable exception). Ethanol, however, is a simple and "promiscuous" ligand that affects many targets to mediate a single biological effect. In this review, we firstly summarize the processes of excitation-contraction coupling and calcium homeostasis which are critical for the regulation of contractility in all muscle types. Secondly, we present the effects of acute and chronic alcohol exposure on the contractility of skeletal, cardiac, and vascular/ nonvascular smooth muscles. Distinctions are made between in vivo and in vitro experiments, intoxicating vs. sub-intoxicating ethanol levels, and human subjects vs. animal models. The differential effects of alcohol on biological sexes are also examined. Lastly, we show that alcohol-mediated disruption of muscle contractility, involves a wide variety of molecular players, including contractile proteins, their regulatory factors, membrane ion channels and pumps, and several signaling molecules. Clear identification of these molecular players constitutes a first step for a rationale design of pharmacotherapeutics to prevent, ameliorate and/or reverse the negative effects of alcohol on muscle contractility.
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Affiliation(s)
| | - Alex M. Dopico
- Department of Pharmacology, Addiction Science, and Toxicology, College of Medicine, The University of Tennessee Health Science Center, Memphis, TN, United States
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Bas S, Ucak R, Oz K, Karsidag SH. The Effect of Very Low Concentrations of Ethanol on Microvascular Artery and Vein Anastomosis: An Experimental Study. J INVEST SURG 2021; 35:967-977. [PMID: 34521313 DOI: 10.1080/08941939.2021.1974613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVES This study investigated the effect of very low concentrations of ethanol on artery and vein anastomosis. Also, it was aimed to determine the appropriate ethanol concentration to be used in vasospasm. METHODS Rats were divided into five groups of eight rats, each group, as follows: Group i: saline; Group ii: 2.5% ethanol; Group iii: 5% ethanol; Group IV: 7.5% ethanol; and Group V: 10% ethanol. During the femoral artery and vein anastomosis, 1ml of the agent was used for irrigation in each group. Vessel diameters were measured before the anastomosis, at the fifth and 15th minutes, and the third week after the anastomosis. Histopathological samples were taken in the third week. RESULTS In Groups ii and iii, the mean vessel diameters were found to increase 15th minute. Also observed was an increase in mean vessel diameter that continued in the third week. Although acute vasodilation was detected in Groups IV and V, arterial and venous thrombosis was observed in the third week. Intima and media thickness decreased in Group ii, while it increased in Group iii. Perivascular inflammation and fibrosis increased as the ethanol concentration increased. CONCLUSION 2.5% ethanol causes acute and prolonged vasodilation and does not cause endothelial cell damage, perivascular inflammation, and fibrosis. 2.5% ethanol will be a powerful alternative use in many situations that occur with vasospasm.
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Affiliation(s)
- Soysal Bas
- Department of Plastic Reconstructive and Aesthetic Surgery, Sisli Hamidiye Etfal Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Ramazan Ucak
- Department of Pathology, Sisli Hamidiye Etfal Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Kurtulus Oz
- Department of Plastic Reconstructive and Aesthetic Surgery, Sisli Hamidiye Etfal Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Semra Hacikerim Karsidag
- Department of Plastic Reconstructive and Aesthetic Surgery, Sisli Hamidiye Etfal Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
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Shi J, Yang Y, Cheng A, Xu G, He F. Metabolism of vascular smooth muscle cells in vascular diseases. Am J Physiol Heart Circ Physiol 2020; 319:H613-H631. [PMID: 32762559 DOI: 10.1152/ajpheart.00220.2020] [Citation(s) in RCA: 152] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Vascular smooth muscle cells (VSMCs) are the fundamental component of the medial layer of arteries and are essential for arterial physiology and pathology. It is becoming increasingly clear that VSMCs can alter their metabolism to fulfill the bioenergetic and biosynthetic requirements. During vascular injury, VSMCs switch from a quiescent "contractile" phenotype to a highly migratory and proliferative "synthetic" phenotype. Recent studies have found that the phenotype switching of VSMCs is driven by a metabolic switch. Metabolic pathways, including aerobic glycolysis, fatty acid oxidation, and amino acid metabolism, have distinct, indispensable roles in normal and dysfunctional vasculature. VSMCs metabolism is also related to the metabolism of endothelial cells. In the present review, we present a brief overview of VSMCs metabolism and how it regulates the progression of several vascular diseases, including atherosclerosis, systemic hypertension, diabetes, pulmonary hypertension, vascular calcification, and aneurysms, and the effect of the risk factors for vascular disease (aging, cigarette smoking, and excessive alcohol drinking) on VSMC metabolism to clarify the role of VSMCs metabolism in the key pathological process.
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Affiliation(s)
- Jia Shi
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Yang
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Anying Cheng
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Gang Xu
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fan He
- Department of Nephrology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Bas S, Hascicek S, Ucak R, Gunenc A, Yesilada AK. Effect of perivascular low dose ethanol on rat femoral vessels: Preliminary study. J Plast Surg Hand Surg 2020; 54:358-364. [PMID: 32643501 DOI: 10.1080/2000656x.2020.1788042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Vasospasm is one of the important causes of morbidity in free flap and replantation surgery. In secondary Raynaud's phenomenon, nearly half of the patients experience digital ulceration, pain and loss of function at least once in their lifetime. The aim of this study is to investigate the vasodilation effect of ethanol-mediated chemical denervation on peripheral vessels by topical administration. In this study, 27 Wistar albino male rats weighing 250-300 grams were used. The rats were randomly divided into three groups: saline (group S, n = 8), lidocaine (group L, n = 9) and 96% ethanol (group E, n = 9). According to group, 0.1 mL saline, 0.1 mL lidocaine and 0.1 mL ethanol were applied around the rat femoral neurovascular bundle. After the application, on the 0th day and 3th weeks, femoral artery and vein diameters were measured. After 3. weeks, histopathological samples from femoral artery, vein and nerve were evaluated. On the 0th day, the mean diameter of the femoral artery and vein was similar in group E and L and higher than group S. After three weeks, the vasodilatation effect of ethanol was increased in group E. In Group L and S, the vasodilatation effect was lost. Histopathological examination showed that ethanol significantly caused perivascular inflammation and nerve degeneration compared to other agents and did not cause endothelial damage. Vasodilatation obtained by ethanol is a rapid onset and long-lasting effect. It is also inexpensive and effective for peripheral vasodilatation.
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Affiliation(s)
- Soysal Bas
- Department of Plastic Reconstructive and Aesthetic Surgery, Sisli Hamidiye Etfal Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Seyhan Hascicek
- Department of Pathology, Istanbul Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Ramazan Ucak
- Department of Pathology, Istanbul Training and Research Hospital, University of Health Sciences, Istanbul, Turkey
| | - Alican Gunenc
- Department of Plastic Reconstructive and Aesthetic Surgery, Yalova State Hospital, Istanbul, Turkey
| | - Aysin Karasoy Yesilada
- Department of Plastic Reconstructive and Aesthetic Surgery, Medipol University, Istanbul, Turkey
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Abstract
BACKGROUND Alcohol is consumed by over 2 billion people worldwide. It is a common substance of abuse and its use can lead to more than 200 disorders including hypertension. Alcohol has both acute and chronic effects on blood pressure. This review aimed to quantify the acute effects of different doses of alcohol over time on blood pressure and heart rate in an adult population. OBJECTIVES Primary objective To determine short-term dose-related effects of alcohol versus placebo on systolic blood pressure and diastolic blood pressure in healthy and hypertensive adults over 18 years of age. Secondary objective To determine short-term dose-related effects of alcohol versus placebo on heart rate in healthy and hypertensive adults over 18 years of age. SEARCH METHODS The Cochrane Hypertension Information Specialist searched the following databases for randomised controlled trials up to March 2019: the Cochrane Hypertension Specialised Register; the Cochrane Central Register of Controlled Trials (CENTRAL; 2019, Issue 2), in the Cochrane Library; MEDLINE (from 1946); Embase (from 1974); the World Health Organization International Clinical Trials Registry Platform; and ClinicalTrials.gov. We also contacted authors of relevant articles regarding further published and unpublished work. These searches had no language restrictions. SELECTION CRITERIA Randomised controlled trials (RCTs) comparing effects of a single dose of alcohol versus placebo on blood pressure (BP) or heart rate (HR) in adults (≥ 18 years of age). DATA COLLECTION AND ANALYSIS Two review authors (ST and CT) independently extracted data and assessed the quality of included studies. We also contacted trial authors for missing or unclear information. Mean difference (MD) from placebo with 95% confidence interval (CI) was the outcome measure, and a fixed-effect model was used to combine effect sizes across studies. MAIN RESULTS: We included 32 RCTs involving 767 participants. Most of the study participants were male (N = 642) and were healthy. The mean age of participants was 33 years, and mean body weight was 78 kilograms. Low-dose alcohol (< 14 g) within six hours (2 RCTs, N = 28) did not affect BP but did increase HR by 5.1 bpm (95% CI 1.9 to 8.2) (moderate-certainty evidence). Medium-dose alcohol (14 to 28 g) within six hours (10 RCTs, N = 149) decreased systolic blood pressure (SBP) by 5.6 mmHg (95% CI -8.3 to -3.0) and diastolic blood pressure (DBP) by 4.0 mmHg (95% CI -6.0 to -2.0) and increased HR by 4.6 bpm (95% CI 3.1 to 6.1) (moderate-certainty evidence for all). Medium-dose alcohol within 7 to 12 hours (4 RCTs, N = 54) did not affect BP or HR. Medium-dose alcohol > 13 hours after consumption (4 RCTs, N = 66) did not affect BP or HR. High-dose alcohol (> 30 g) within six hours (16 RCTs, N = 418) decreased SBP by 3.5 mmHg (95% CI -6.0 to -1.0), decreased DBP by 1.9 mmHg (95% CI-3.9 to 0.04), and increased HR by 5.8 bpm (95% CI 4.0 to 7.5). The certainty of evidence was moderate for SBP and HR, and was low for DBP. High-dose alcohol within 7 to 12 hours of consumption (3 RCTs, N = 54) decreased SBP by 3.7 mmHg (95% CI -7.0 to -0.5) and DBP by 1.7 mmHg (95% CI -4.6 to 1.8) and increased HR by 6.2 bpm (95% CI 3.0 to 9.3). The certainty of evidence was moderate for SBP and HR, and low for DBP. High-dose alcohol ≥ 13 hours after consumption (4 RCTs, N = 154) increased SBP by 3.7 mmHg (95% CI 2.3 to 5.1), DBP by 2.4 mmHg (95% CI 0.2 to 4.5), and HR by 2.7 bpm (95% CI 0.8 to 4.6) (moderate-certainty evidence for all). AUTHORS' CONCLUSIONS: High-dose alcohol has a biphasic effect on BP; it decreases BP up to 12 hours after consumption and increases BP > 13 hours after consumption. High-dose alcohol increases HR at all times up to 24 hours. Findings of this review are relevant mainly to healthy males, as only small numbers of women were included in the included trials.
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Affiliation(s)
- Sara Tasnim
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Chantel Tang
- Faculty of Health Sciences, McGill University, Montreal, Canada
| | - Vijaya M Musini
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - James M Wright
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
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Xu Z, Chen J, Cai J, Xiao Y, Wang Q, Chen S, Zhang L, Wu Z. Mitochondrial ATP synthase regulates corpus cavernosum smooth muscle cell function in vivo and in vitro. Exp Ther Med 2020; 19:3497-3504. [PMID: 32346410 PMCID: PMC7185181 DOI: 10.3892/etm.2020.8637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 12/19/2019] [Indexed: 11/06/2022] Open
Abstract
Adenosine triphosphate (ATP) levels are closely associated with diabetes-related erectile dysfunction (DMED). Mitochondrial ATP synthase serves a key role in ATP production. The present study aimed to investigate the relationship between F1-ATP synthase and DMED in vivo and in vitro. The F1-ATP synthase expression levels in corpus cavernosum tissues from rats with DMED were examined. F1-ATP synthase expression was found to be lower in corpus cavernosum tissues from rats with DMED compared with healthy controls, suggesting a role for ATP synthase under high glucose conditions. In addition, the present study also demonstrated that hyperglycemia could downregulate F1-ATP synthase expression in rat corpus cavernosum smooth muscle cells (CCSMCs) in vitro. The overexpression of F1-ATP synthase in CCSMCs influenced the phenotypic CCSMC transformation, upregulated eNOS expression, increased cGMP levels and reduced CCSMC apoptosis under high glucose in vitro. In conclusion, the present study indicates that the upregulation of mitochondrial ATP synthase expression may improve CCSMC function, suggesting that mitochondrial ATP synthase could serve as a potential therapeutic target for the treatment of DMED.
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Affiliation(s)
- Ziqiang Xu
- Department of Transplantation, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Jihao Chen
- Department of Transplantation, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Jian Cai
- Department of Andrology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Yunbei Xiao
- Department of Andrology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Qinquan Wang
- Department of Andrology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Shuowei Chen
- The Second Department of Medicine, Renji School, Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Lei Zhang
- Department of Urology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Zhigang Wu
- Department of Andrology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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10
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Silva H. Current Knowledge on the Vascular Effects of Menthol. Front Physiol 2020; 11:298. [PMID: 32317987 PMCID: PMC7154148 DOI: 10.3389/fphys.2020.00298] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Accepted: 03/16/2020] [Indexed: 12/13/2022] Open
Abstract
Menthol is a monoterpene alcohol, widely used in several food and healthcare products for its particular odor and flavor. For some decades, menthol has been known to act on the vasculature directly in the endothelium and vascular smooth muscle, with recent studies showing that it also evokes an indirect vascular response via sensory fibers. The mechanisms underlying menthol's vascular action are complex due to the diversity of cellular targets, to the interplay between signaling pathways and to the variability in terms of response. Menthol can evoke either a perfusion increase or decrease in vivo in different vascular territories, an observation that warrants a critical discussion. Menthol vascular actions in vivo seem to depend on whether the vascular territory under analysis has been directly provoked with menthol or is located deep/distant to the application site. Menthol increases perfusion of directly provoked skin regions due to a complex interplay of increased nitric oxide (NO), endothelium-derived hyperpolarization factors (EDHFs) and sensory nerve responses. In non-provoked vascular beds menthol decreases perfusion which might be attributed to heat-conservation sympathetically-mediated vasoconstriction, although an increase in tissue evaporative heat loss due the formulation ethanol may also play a role. There is increasing evidence that several of menthol's cellular targets are involved in cardiovascular diseases, such as hypertension. Thus menthol and pharmacologically-similar drugs can play important preventive and therapeutic roles, which merits further investigation.
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Affiliation(s)
- Henrique Silva
- CBIOS - Universidade Lusófona’s Research Center for Biosciences and Health Technologies, Lisboa, Portugal
- Pharmacol. Sc Depart - Universidade de Lisboa, Faculty of Pharmacy, Lisboa, Portugal
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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11
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Yao F, Abdel-Rahman AA. Aldehyde Dehydrogenase Inhibition Ameliorates Cardiac Dysfunction and Exacerbates Hypotension Caused by Alcohol in Female Rats. Alcohol Clin Exp Res 2020; 44:45-55. [PMID: 31693194 PMCID: PMC6980931 DOI: 10.1111/acer.14225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 10/30/2019] [Indexed: 11/30/2022]
Abstract
BACKGROUND Aldehyde dehydrogenase 2 (ALDH2) protects against alcohol-evoked cardiac dysfunction in male rodents, but its role in the estrogen (E2 )-dependent hypersensitivity of female rats to alcohol-evoked myocardial oxidative stress and dysfunction is not known. METHODS We addressed this question by studying the effect of cyanamide (ALDH2 inhibitor) on cardiac function, blood pressure, alcohol-metabolizing enzyme (alcohol dehydrogenase, cytochrome P450 2E1, catalase, and ALDH2) activities, and cardiac redox status (reactive oxygen species, ROS; malondialdehyde, MDA) in the absence or presence of ethanol (EtOH) in female sham-operated (SO) and ovariectomized (OVX) rats. RESULTS Cyanamide attenuated the EtOH-evoked myocardial dysfunction (reduced dP/dtmax and LVDP) in SO rats. EtOH, cyanamide, or their combination did not alter dP/dtmax or LVDP in OVX rats. Cyanamide induced cardiac oxidative stress and abrogated the subsequent alcohol-evoked increases in ROS and MDA levels in SO rats. Neither EtOH nor cyanamide influenced ROS or MDA levels in OVX rats. Importantly, cyanamide exaggerated EtOH-evoked hypotension in SO and uncovered this hypotensive response in OVX rats, which implicates ALDH2 in the vasodilating effect of EtOH. CONCLUSIONS Contrary to our hypothesis, cyanamide attenuated the E2 -dependent cardiac dysfunction caused by alcohol, likely by preconditioning the heart to oxidative stress, while exacerbating the vasodilating effect of alcohol. The latter might predispose to syncope when cyanamide and alcohol are combined in females.
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Affiliation(s)
- Fanrong Yao
- From the, Department of Pharmacology & Toxicology, Brody School of Medicine, East Carolina University, Greenville, North Carolina
| | - Abdel A Abdel-Rahman
- From the, Department of Pharmacology & Toxicology, Brody School of Medicine, East Carolina University, Greenville, North Carolina
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12
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Jin L, Lorkiewicz P, Malovichko MV, Bhatnagar A, Srivastava S, Conklin DJ. Acetaldehyde Induces an Endothelium-Dependent Relaxation of Superior Mesenteric Artery: Potential Role in Postprandial Hyperemia. Front Physiol 2019; 10:1315. [PMID: 31695624 PMCID: PMC6817488 DOI: 10.3389/fphys.2019.01315] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 09/30/2019] [Indexed: 01/06/2023] Open
Abstract
Acetaldehyde (AA) is a small, ubiquitous compound present in foods, beverages, as a gas phase combustion product, and also endogenously generated from metabolism as from ethanol (EtOH). Acetate is a short chain fatty acid derived from AA oxidation, and acetate levels were significantly higher in urine collected overnight with food provided ad libitum compared with urine collected after 9 h fasting. Feeding increases gastrointestinal blood flow, and thus, we explored the direct effects of AA (and acetate) in isolated murine superior mesenteric artery (SMA). Over the concentration range of 1–100 mM, AA strongly, and reversibly relaxed agonist-induced contractions of SMA including phenylephrine (PE), thromboxane A2 analog (U46,619) and high potassium (High K+) without toxicity. The sensitivity (EC50) but not the efficacy (>90% relaxation of PE-precontraction) of AA-induced relaxations was dependent on blood vessel (SMA was 3× more sensitive than aorta) and contractile agonist (PE EC50 = 3.3 ± 0.4 mM; U46,619 EC50 = 14.9 ± 1.5 mM; and High K+ EC50 = 17.7 ± 0.5 mM) yet independent of circadian cycle and sex. The most sensitive component of the AA-induced relaxation was inhibited significantly by: (1) a mechanically impaired endothelium; (2) nitric oxide synthase (NOS) inhibitor (L-NAME); and (3) a guanylyl cyclase (GC) inhibitor (ODQ). Both acetate and EtOH stimulated much weaker relaxations in SMA than did AA, yet these relaxations were significantly inhibited by L-NAME as well. Neither EtOH nor acetate relaxed pre-contracted aorta. Although neither cyanamide, a non-specific aldehyde dehydrogenase (ALDH) enzyme inhibitor, nor Alda-1, a specific activator of ALDH2 activity, had any effect on either sensitivity or efficacy of AA-induced relaxation in SMA, cyanamide significantly blocked both EtOH- and acetate-induced relaxations in SMA implicating a role of ALDH activity in vasorelaxation. These data show that AA relaxes SMA via an endothelium- and NO-dependent mechanism indicating that AA may be one component of the complex post-prandial hyperemia reflex via vasodilatation of mesenteric vasculature.
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Affiliation(s)
- Lexiao Jin
- Department of Anesthesiology, Critical Care and Pain Medicine, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, China.,Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, United States
| | - Pawel Lorkiewicz
- Envirome Institute, University of Louisville, Louisville, KY, United States.,Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States.,Department of Medicine, University of Louisville, Louisville, KY, United States
| | - Marina V Malovichko
- Envirome Institute, University of Louisville, Louisville, KY, United States.,Department of Medicine, University of Louisville, Louisville, KY, United States.,American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, United States
| | - Aruni Bhatnagar
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, United States.,Envirome Institute, University of Louisville, Louisville, KY, United States.,Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States.,Department of Medicine, University of Louisville, Louisville, KY, United States.,American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, United States
| | - Sanjay Srivastava
- Envirome Institute, University of Louisville, Louisville, KY, United States.,Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States.,Department of Medicine, University of Louisville, Louisville, KY, United States.,American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, United States
| | - Daniel J Conklin
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, United States.,Envirome Institute, University of Louisville, Louisville, KY, United States.,Diabetes and Obesity Center, University of Louisville, Louisville, KY, United States.,Department of Medicine, University of Louisville, Louisville, KY, United States.,American Heart Association-Tobacco Regulation Center, University of Louisville, Louisville, KY, United States
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13
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Nasiri M, Kardar MH. Effect of Ethanol on Micro-Vessels Diameter and Prevention of Thrombosis. World J Plast Surg 2019; 8:249-253. [PMID: 31309064 PMCID: PMC6620814 DOI: 10.29252/wjps.8.2.249] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Microvascular surgery is one of the most important parts of reconstructive surgery. In the present study, the effect of ethanol on microvascular diameter and prevention of thrombosis was evaluated. METHODS Totally, 80 vessels including 40 arteries and 40 veins in right and left ears of 20 adult rabbits were enrolled. Seven days after injection of ethanol to rabbit ear vessel, vessel diameter and thrombosis rate post-iced saline challenge were documented and compared to normal saline injection in contralateral ear as a control group. RESULTS Vessel diameter in both arteries and veins in ethanol group was significantly larger than normal saline control group, and patency rates due to preventive effect of ethanol were also significantly higher in the ethanol group after iced saline challenge. CONCLUSION Pretreatment with ethanol can enlarge vessel diameter and play a preventive role on thrombosis after iced saline challenge.
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Affiliation(s)
- Mojtaba Nasiri
- School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Mohammad Hossein Kardar
- Department of Plastic Surgery, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
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14
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Bian JT, Piano MR, Kotlo KU, Mahmoud AM, Phillips SA. MicroRNA-21 Contributes to Reduced Microvascular Function in Binge Drinking Young Adults. Alcohol Clin Exp Res 2018; 42:278-285. [PMID: 29178290 PMCID: PMC7286284 DOI: 10.1111/acer.13565] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Accepted: 11/20/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND Binge drinking is associated with increased risk for cardiovascular (CV) disease. MicroRNA-21 (miR21) is up-regulated in the setting of excessive alcohol consumption and CV disease. Therefore, the goal of this study was to examine the vasodilatory responses to flow and acetylcholine (ACh) in the absence and presence of an anti-miR21 inhibitor in the microcirculation of young adult repeated binge drinkers (BDs). METHODS Gluteal subcutaneous adipose tissue biopsies were obtained from young adults (18 to 30 years, n = 35 vessels from BDs and n = 28 vessels from abstainers). Resistance arteries (RAs) were isolated, incubated with anti-miR21 or a negative control (NC) to miR21 (12 hours; 50 nM), and lumen diameters measured with video microscopy. miR21 of adipose tissues was determined by quantitative polymerase chain reaction. RESULTS Flow-induced dilation and ACh-induced dilation (AChID) were reduced in BDs as compared to abstainers. The miR21 inhibitor but not the NC abrogated these effects in BDs, but did not affect vasodilation in abstainers. Nitric oxide synthase inhibition with L-NAME reduced vasodilation in abstainers but not in BDs. In BDs, vasodilation was reduced by L-NAME in the presence of anti-miR21 but not the NC. Scavenging the reactive oxygen species, hydrogen peroxide with polyethylene glycol catalase reduced dilation in BDs but did not affect the restored dilation by the miR21 inhibitor. Maximum dilation to papaverine (endothelium independent) was similar between groups and unaffected by pharmacological inhibition. Finally, vascular endogenous miR21 was increased in BDs compared to abstainers. CONCLUSIONS Endogenous miR21 is increased in RAs of young BDs, leading to reduced flow and AChID in the microcirculation.
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Affiliation(s)
- Jing-Tan Bian
- Department of Biobehavioral Health Science, University of
Illinois at Chicago, Chicago, Illinois
| | - Mariann R. Piano
- Department of Biobehavioral Health Science, University of
Illinois at Chicago, Chicago, Illinois
- School of Nursing, Vanderbilt University, Nashville,
TN
| | - Kumar U. Kotlo
- Division of Cardiology, Department of Medicine, University
of Illinois at Chicago, Chicago, IL
| | - Abeer M. Mahmoud
- Department of Physical Therapy, University of Illinois at
Chicago, Chicago, IL
- Department of Kinesiology and Nutrition, University of
Illinois at Chicago, Chicago, IL
| | - Shane A. Phillips
- Department of Physical Therapy, University of Illinois at
Chicago, Chicago, IL
- Integrative Physiology Laboratory, University of Illinois
at Chicago, Chicago, IL
- Division of Endocrinology, Diabetes, and Metabolism,
Department of Medicine, University of Illinois at Chicago, Chicago, IL
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15
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Veras RC, Silva DF, Bezerra LS, de Assis VL, de Vasconcelos WP, Alustau MDC, de Albuquerque JGF, Furtado FF, Araújo IGDA, de Azevedo FDLAA, Ribeiro TP, Barbosa-Filho JM, Gutierrez SJC, Medeiros IA. N-Salicyloyltryptamine, an N-Benzoyltryptamine Analogue, Induces Vasorelaxation through Activation of the NO/sGC Pathway and Reduction of Calcium Influx. Molecules 2018; 23:molecules23020253. [PMID: 29382081 PMCID: PMC6017111 DOI: 10.3390/molecules23020253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/06/2018] [Accepted: 01/12/2018] [Indexed: 11/30/2022] Open
Abstract
Benzoyltryptamine analogues act as neuroprotective and spasmolytic agents on smooth muscles. In this study, we investigated the ability of N-salicyloyltryptamine (STP) to produce vasorelaxation and determined its underlying mechanisms of action. Isolated rat mesenteric arteries with and without functional endothelium were studied in an isometric contraction system in the presence or absence of pharmacological inhibitors. Amperometric experiments were used to measure the nitric oxide (NO) levels in CD31+ cells using flow cytometry. GH3 cells were used to measure Ca2+ currents using the whole cell patch clamp technique. STP caused endothelium-dependent and -independent relaxation in mesenteric rings. The endothelial-dependent relaxations in response to STP were markedly reduced by L-NAME (endothelial NO synthase—eNOS—inhibitor), jHydroxocobalamin (NO scavenger, 30 µM) and ODQ (soluble Guanylyl Cyclase—sGC—inhibitor, 10 µM), but were not affected by the inhibition of the formation of vasoactive prostanoids. These results were reinforced by the increased NO levels observed in the amperometric experiments with freshly dispersed CD31+ cells. The endothelium-independent effect appeared to involve the inhibition of voltage-gated Ca2+ channels, due to the inhibition of the concentration-response Ca2+ curves in depolarizing solution, the increased relaxation in rings that were pre-incubated with high extracellular KCl (80 mM), and the inhibition of macroscopic Ca2+ currents. The present findings show that the activation of the NO/sGC/cGMP pathway and the inhibition of gated-voltage Ca2+ channels are the mechanisms underlying the effect of STP on mesenteric arteries.
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Affiliation(s)
- Robson Cavalcante Veras
- Department of Pharmaceutical Sciences, Federal University of Paraíba (UFPB), João Pessoa 58059-900, Brazil; (I.G.d.A.A.); (J.M.B.-F); (I.A.M.)
- Postgraduate Program of Nutrition Science/CCS/Federal University of Paraíba (UFPB);
- Correspondence: ; Tel.: +55-83-3216-7347
| | - Darizy Flávia Silva
- Department of Biorregulation, Federal University of Bahia (UFBA), Av. Reitor Miguel Calmon, S/N, Vale do Canela, Salvador 40110-902, Brazil;
| | | | - Valéria Lopes de Assis
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Walma Pereira de Vasconcelos
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Maria do Carmo Alustau
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - José George Ferreira de Albuquerque
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Fabíola Fialho Furtado
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | | | - Fátima de Lourdes Assunção Araújo de Azevedo
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Thais Porto Ribeiro
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - José Maria Barbosa-Filho
- Department of Pharmaceutical Sciences, Federal University of Paraíba (UFPB), João Pessoa 58059-900, Brazil; (I.G.d.A.A.); (J.M.B.-F); (I.A.M.)
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Stanley Juan Chavez Gutierrez
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Isac Almeida Medeiros
- Department of Pharmaceutical Sciences, Federal University of Paraíba (UFPB), João Pessoa 58059-900, Brazil; (I.G.d.A.A.); (J.M.B.-F); (I.A.M.)
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
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16
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Maufrais C, Charriere N, Montani JP. Cardiovascular and Cutaneous Responses to the Combination of Alcohol and Soft Drinks: The Way to Orthostatic Intolerance? Front Physiol 2017; 8:860. [PMID: 29176950 PMCID: PMC5686118 DOI: 10.3389/fphys.2017.00860] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 10/16/2017] [Indexed: 12/13/2022] Open
Abstract
Aim: Acute ingestion of alcohol is often accompanied by cardiovascular dysregulation, malaise and even syncope. The full hemodynamic and cutaneous responses to the combination of alcohol and sugar (i.e., alcopops), a common combination in young people, and the mechanisms for the propensity to orthostatic intolerance are not well established. Thus, the purpose of this study was to evaluate the cardiovascular and cutaneous responses to alcopops in young subjects. Methods: Cardiovascular and cutaneous responses were assessed in 24 healthy young subjects (12 men, 12 women) sitting comfortably and during prolonged active standing with a 30-min baseline and 130 min following ingestion of 400 mL of either: water, water + 48 g sugar, water + vodka (1.28 mL.kg-1 of body weight, providing 0.4 g alcohol.kg-1), water + sugar + vodka, according to a randomized cross-over design. Results: Compared to alcohol alone, vodka + sugar induced a lower breath alcohol concentration (BrAC), blood pressure and total peripheral resistance (p < 0.05), a higher cardiac output and heart rate (p < 0.05) both in sitting position and during active standing. In sitting position vodka + sugar consumption also led to a greater increase in skin blood flow and hand temperature (p < 0.05) and a decrease in baroreflex sensitivity (p < 0.05). We observed similar results between men and women both in sitting position and during active standing. Conclusion: Despite lower BrAC, ingestion of alcopops induced acute vasodilation and hypotension in sitting position and an encroach of the hemodynamic reserve during active standing. Even if subjects did not feel any signs of syncope these results could be of clinical importance with higher doses of alcohol or if combined to other hypotensive challenges.
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Affiliation(s)
- Claire Maufrais
- Division of Physiology, Laboratory of Integrative Cardiovascular and Metabolic Physiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Nathalie Charriere
- Division of Physiology, Laboratory of Integrative Cardiovascular and Metabolic Physiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Jean-Pierre Montani
- Division of Physiology, Laboratory of Integrative Cardiovascular and Metabolic Physiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland
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17
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Vanhoutte PM, Zhao Y, Xu A, Leung SWS. Thirty Years of Saying NO: Sources, Fate, Actions, and Misfortunes of the Endothelium-Derived Vasodilator Mediator. Circ Res 2017; 119:375-96. [PMID: 27390338 DOI: 10.1161/circresaha.116.306531] [Citation(s) in RCA: 264] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 06/02/2016] [Indexed: 12/16/2022]
Abstract
Endothelial cells control vascular tone by releasing nitric oxide (NO) produced by endothelial NO synthase. The activity of endothelial NO synthase is modulated by the calcium concentration and by post-translational modifications (eg, phosphorylation). When NO reaches vascular smooth muscle, soluble guanylyl cyclase is its primary target producing cGMP. NO production is stimulated by circulating substances (eg, catecholamines), platelet products (eg, serotonin), autacoids formed in (eg, bradykinin) or near (eg, adiponectin) the vascular wall and physical factors (eg, shear stress). NO dysfunction can be caused, alone or in combination, by abnormal coupling of endothelial cell membrane receptors, insufficient supply of substrate (l-arginine) or cofactors (tetrahydrobiopterin), endogenous inhibitors (asymmetrical dimethyl arginine), reduced expression/presence/dimerization of endothelial NO synthase, inhibition of its enzymatic activity, accelerated disposition of NO by reactive oxygen species and abnormal responses (eg, biased soluble guanylyl cyclase activity producing cyclic inosine monophosphate) of the vascular smooth muscle. Major culprits causing endothelial dysfunction, irrespective of the underlying pathological process (aging, obesity, diabetes mellitus, and hypertension), include stimulation of mineralocorticoid receptors, activation of endothelial Rho-kinase, augmented presence of asymmetrical dimethyl arginine, and exaggerated oxidative stress. Genetic and pharmacological interventions improve dysfunctional NO-mediated vasodilatations if protecting the supply of substrate and cofactors for endothelial NO synthase, preserving the presence and activity of the enzyme and reducing reactive oxygen species generation. Common achievers of such improvement include maintained levels of estrogens and increased production of adiponectin and induction of silent mating-type information regulation 2 homologue 1. Obviously, endothelium-dependent relaxations are not the only beneficial action of NO in the vascular wall. Thus, reduced NO-mediated responses precede and initiate the atherosclerotic process.
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Affiliation(s)
- Paul M Vanhoutte
- From the State Key Laboratory of Pharmaceutical Biotechnology (P.M.V., Y.Z., A.X., S.W.S.L.), Department of Pharmacology and Pharmacy (P.M.V., Y.Z., A.X., S.W.S.L.), and Department of Medicine (A.X.), Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
| | - Yingzi Zhao
- From the State Key Laboratory of Pharmaceutical Biotechnology (P.M.V., Y.Z., A.X., S.W.S.L.), Department of Pharmacology and Pharmacy (P.M.V., Y.Z., A.X., S.W.S.L.), and Department of Medicine (A.X.), Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Aimin Xu
- From the State Key Laboratory of Pharmaceutical Biotechnology (P.M.V., Y.Z., A.X., S.W.S.L.), Department of Pharmacology and Pharmacy (P.M.V., Y.Z., A.X., S.W.S.L.), and Department of Medicine (A.X.), Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Susan W S Leung
- From the State Key Laboratory of Pharmaceutical Biotechnology (P.M.V., Y.Z., A.X., S.W.S.L.), Department of Pharmacology and Pharmacy (P.M.V., Y.Z., A.X., S.W.S.L.), and Department of Medicine (A.X.), Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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18
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Simplicio JA, Hipólito UV, Vale GTD, Callera GE, Pereira CA, Touyz RM, Tostes RDC, Tirapelli CR. Acute Ethanol Intake Induces NAD(P)H Oxidase Activation and Rhoa Translocation in Resistance Arteries. Arq Bras Cardiol 2016; 107:427-436. [PMID: 27812679 PMCID: PMC5137387 DOI: 10.5935/abc.20160147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 05/24/2016] [Indexed: 12/13/2022] Open
Abstract
Background The mechanism underlying the vascular dysfunction induced by ethanol is not
totally understood. Identification of biochemical/molecular mechanisms that
could explain such effects is warranted. Objective To investigate whether acute ethanol intake activates the vascular RhoA/Rho
kinase pathway in resistance arteries and the role of NAD(P)H
oxidase-derived reactive oxygen species (ROS) on such response. We also
evaluated the requirement of p47phox translocation for ethanol-induced
NAD(P)H oxidase activation. Methods Male Wistar rats were orally treated with ethanol (1g/kg, p.o. gavage) or
water (control). Some rats were treated with vitamin C (250 mg/kg, p.o.
gavage, 5 days) before administration of water or ethanol. The mesenteric
arterial bed (MAB) was collected 30 min after ethanol administration. Results Vitamin C prevented ethanol-induced increase in superoxide anion
(O2-) generation and lipoperoxidation in the MAB.
Catalase and superoxide dismutase activities and the reduced glutathione,
nitrate and hydrogen peroxide (H2O2) levels were not
affected by ethanol. Vitamin C and 4-methylpyrazole prevented the increase
on O2- generation induced by ethanol in cultured MAB
vascular smooth muscle cells. Ethanol had no effect on phosphorylation
levels of protein kinase B (Akt) and eNOS (Ser1177 or
Thr495 residues) or MAB vascular reactivity. Vitamin C
prevented ethanol-induced increase in the membrane: cytosol fraction ratio
of p47phox and RhoA expression in the rat MAB. Conclusion Acute ethanol intake induces activation of the RhoA/Rho kinase pathway by a
mechanism that involves ROS generation. In resistance arteries, ethanol
activates NAD(P)H oxidase by inducing p47phox translocation by a
redox-sensitive mechanism.
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Affiliation(s)
- Janaina A Simplicio
- Programa de Pós-Graduação em Farmacologia - Faculdade de Medicina de Ribeirão Preto - Universidade de São Paulo (USP), SP, Brazil
| | - Ulisses Vilela Hipólito
- Programa de Pós-Graduação em Farmacologia - Faculdade de Medicina de Ribeirão Preto - Universidade de São Paulo (USP), SP, Brazil
| | - Gabriel Tavares do Vale
- Programa de Pós-Graduação em Farmacologia - Faculdade de Medicina de Ribeirão Preto - Universidade de São Paulo (USP), SP, Brazil
| | | | - Camila André Pereira
- Programa de Pós-Graduação em Farmacologia - Faculdade de Medicina de Ribeirão Preto - Universidade de São Paulo (USP), SP, Brazil
| | | | - Rita de Cássia Tostes
- Programa de Pós-Graduação em Farmacologia - Faculdade de Medicina de Ribeirão Preto - Universidade de São Paulo (USP), SP, Brazil
| | - Carlos R Tirapelli
- Departamento de Enfermagem Psiquiátrica e Ciências Humanas - Laboratório de Farmacologia - Escola de Enfermagem de Ribeirão Preto - Universidade de São Paulo (USP); SP, Brazil
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19
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Hipólito UV, Callera GE, Simplicio JA, De Martinis BS, Touyz RM, Tirapelli CR. Vitamin C prevents the endothelial dysfunction induced by acute ethanol intake. Life Sci 2015; 141:99-107. [DOI: 10.1016/j.lfs.2015.09.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 08/05/2015] [Accepted: 09/15/2015] [Indexed: 12/11/2022]
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20
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Gonzaga NA, Callera GE, Yogi A, Mecawi AS, Antunes-Rodrigues J, Queiroz RH, Touyz RM, Tirapelli CR. Acute ethanol intake induces mitogen-activated protein kinase activation, platelet-derived growth factor receptor phosphorylation, and oxidative stress in resistance arteries. J Physiol Biochem 2014; 70:509-23. [PMID: 24733165 DOI: 10.1007/s13105-014-0331-6] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Accepted: 03/10/2014] [Indexed: 12/16/2022]
Abstract
In the present study, we investigated the role of angiotensin type I (AT1) receptor in reactive oxygen species (ROS) generation and mitogen-activated protein kinases (MAPK) activation induced by acute ethanol intake in resistance arteries. We also evaluated the effect of ethanol on platelet-derived growth factor receptors (PDGF-R) phosphorylation and the role of this receptor on ROS generation by ethanol. Ethanol (1 g/kg; p.o. gavage) effects were assessed within 30 min in male Wistar rats. Acute ethanol intake did not alter angiotensin I or angiotensin II levels in the rat mesenteric arterial bed (MAB). Ethanol induced vascular oxidative stress, and this response was not prevented by losartan (10 mg/kg; p.o. gavage), a selective AT1 receptor antagonist. MAB from ethanol-treated rats displayed increased SAPK/JNK and PDGF-R phosphorylation, responses that were not prevented by losartan. The phosphorylation levels of protein kinase B (Akt) and eNOS were not affected by acute ethanol intake. MAB nitrate levels and the reactivity of this tissue to acetylcholine, phenylephrine, and sodium nitroprusside were not affected by ethanol intake. Ethanol did not alter plasma antioxidant capacity, the levels of reduced glutathione, or the activities of superoxide dismutase and catalase in the rat MAB. Short-term effects of ethanol (50 mmol/l) were evaluated in vascular smooth muscle cells (VSMC) isolated from rat MAB. Ethanol increased ROS generation, and this response was not affected by AG1296, a PDGF-R inhibitor, or losartan. Finally, ethanol did not alter MAPK or PDGF-R phosphorylation in cultured VSMC. Our study provides novel evidence that acute ethanol intake induces ROS generation, PDGF-R phosphorylation, and MAPK activation through AT(1)-independent mechanisms in resistance arteries in vivo. MAPK and PDGF-R play a role in vascular signaling and cardiovascular diseases and may contribute to the vascular pathobiology of ethanol.
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Affiliation(s)
- Natália A Gonzaga
- Departamento de Enfermagem Psiquiátrica e Ciências Humanas, Laboratório de Farmacologia, Escola de Enfermagem de Ribeirão Preto, USP, Ribeirão Preto, SP, Brazil
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Cahill PA, Redmond EM. Alcohol and cardiovascular disease--modulation of vascular cell function. Nutrients 2012; 4:297-318. [PMID: 22606372 PMCID: PMC3347010 DOI: 10.3390/nu4040297] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2012] [Revised: 04/12/2012] [Accepted: 04/16/2012] [Indexed: 12/22/2022] Open
Abstract
Alcohol is a commonly used drug worldwide. Epidemiological studies have identified alcohol consumption as a factor that may either positively or negatively influence many diseases including cardiovascular disease, certain cancers and dementia. Often there seems to be a differential effect of various drinking patterns, with frequent moderate consumption of alcohol being salutary and binge drinking or chronic abuse being deleterious to one’s health. A better understanding of the cellular and molecular mechanisms mediating the many effects of alcohol consumption is beginning to emerge, as well as a clearer picture as to whether these effects are due to the direct actions of alcohol itself, or caused in part by its metabolites, e.g., acetaldehyde, or by incidental components present in the alcoholic beverage (e.g., polyphenols in red wine). This review will discuss evidence to date as to how alcohol (ethanol) might affect atherosclerosis that underlies cardiovascular and cerebrovascular disease, and the putative mechanisms involved, focusing on vascular endothelial and smooth muscle cell effects.
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Affiliation(s)
- Paul A. Cahill
- School of Biotechnology, Dublin City University, Glasnevin, Dublin 9, Ireland;
| | - Eileen M. Redmond
- Department of Surgery, University of Rochester Medical Center, 601 Elmwood Ave., Rochester, NY 14642, USA
- Author to whom correspondence should be addressed; ; Tel.: +1-585-275-2870
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Zhang R, Niu H, Wang N, Sun L, Xu Y, Zhao R, Ban X, Yu Y, Yang B, Ai J. Daming capsule restores endothelial dysfunction induced by high-fat diet. Altern Ther Health Med 2012; 12:21. [PMID: 22443680 PMCID: PMC3383478 DOI: 10.1186/1472-6882-12-21] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2011] [Accepted: 03/24/2012] [Indexed: 01/01/2023]
Abstract
BACKGROUND Daming capsule (DMC), a traditional Chinese formula, has a lipid-modulating action with reduced adverse side effects as compared with other lipid lowering compounds. Since endothelial dysfunction often accompanies the hyperlipidemic state, we hypothesize that DMC might restore endothelial dysfunction produced by a high-fat (HF) diet. Importantly, we also investigate possible mechanisms involved in mediating the effects of DMC on vascular reactivity. METHODS Rats were divided into four groups: control, HF diet, HF mixed DMC diet, HF mixed atorvastatin (ATV) diet. After 30 days, the thoracic cavity was exposed to remove the thoracic aorta for (i) histological examination; (ii) measurement of endothelial nitric oxide synthase (eNOS) by western blot; and (iii) tension study of thoracic aortic ring. RESULTS HF diet induced significant attenuation in the contraction and relaxation of rat aortic rings. Treatment with DMC significantly improved the relaxation of the aortic rings as compared with those from HF rats (P < 0.05), which was abolished by a nonspecific NOS inhibitor L-NAME. Moreover DMC significantly restored the decrease in eNOS expression induced by HF diet. Similar results were found in histopathologic changes. DMC failed to restore the loss of vasocontraction of aorta explained by an impairment of ATP-sensitive K+ channels (KATP) on the structure and/or function. DMC exerted the same protective effect as ATV, a positive control drug, on vascular injury produced by HF diet. CONCLUSION DMC partially protects the aorta from HF-induced endothelial dysfunction via upregulation of the expression of eNOS.
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