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Ambra R, Pastore G, Lucchetti S. The Role of Bioactive Phenolic Compounds on the Impact of Beer on Health. Molecules 2021; 26:486. [PMID: 33477637 PMCID: PMC7831491 DOI: 10.3390/molecules26020486] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/14/2021] [Accepted: 01/15/2021] [Indexed: 11/16/2022] Open
Abstract
This review reports recent knowledge on the role of ingredients (barley, hop and yeasts), including genetic factors, on the final yield of phenolic compounds in beer, and how these molecules generally affect resulting beer attributes, focusing mainly on new attempts at the enrichment of beer phenols, with fruits or cereals other than barley. An entire section is dedicated to health-related effects, analyzing the degree up to which studies, investigating phenols-related health effects of beer, have appropriately considered the contribution of alcohol (pure or spirits) intake. For such purpose, we searched Scopus.com for any kind of experimental model (in vitro, animal, human observational or intervention) using beer and considering phenols. Overall, data reported so far support the existence of the somehow additive or synergistic effects of phenols and ethanol present in beer. However, findings are inconclusive and thus deserve further animal and human studies.
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Affiliation(s)
- Roberto Ambra
- Council for Agricultural Research and Economics, Research Centre for Food and Nutrition, 00178 Rome, Italy; (G.P.); (S.L.)
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Pompeani N, Rybalka E, Latchman H, Murphy RM, Croft K, Hayes A. Skeletal muscle atrophy in sedentary Zucker obese rats is not caused by calpain-mediated muscle damage or lipid peroxidation induced by oxidative stress. J Negat Results Biomed 2014; 13:19. [PMID: 25547587 PMCID: PMC4296544 DOI: 10.1186/s12952-014-0019-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 12/12/2014] [Indexed: 11/10/2022] Open
Abstract
Background Skeletal muscle undergoes significant atrophy in Type 2 diabetic patients and animal models. We aimed to determine if atrophy of Zucker rat skeletal muscle was due to the activation of intracellular damage pathways induced by excess reactive oxygen species production (specifically those associated with the peroxidation of lipid membranes) and calpain activity. 14 week old obese Zucker rats and littermate lean controls were injected with 1% Evan’s Blue Dye. Animals were anaesthetised and extensor digitorum longus and soleus muscles were dissected, snap frozen and analysed for ROS-mediated F2-isoprostane production and calpain activation/autolysis. Contralateral muscles were histologically analysed for markers of muscle membrane permeability and atrophy. Results Muscle mass was lower in extensor digitorum longus and soleus of obese compared with lean animals, concomitant with reduced fibre area. Muscles from obese rats had a higher proportional area of Evan’s Blue Dye fluorescence, albeit this was localised to the interstitium/external sarcolemma. There were no differences in F2-isoprostane production when expressed relative to arachidonic acid content, which was lower in the obese EDL and soleus muscles. There were no differences in the activation of either μ-calpain or calpain-3. Conclusions This study highlights that atrophy of Zucker rat skeletal muscle is not related to sarcolemmal damage, sustained hyperactivation of the calpain proteases or excessive lipid peroxidation. As such, establishing the correct pathways involved in atrophy is highly important so as to develop more specific treatment options that target the underlying cause. This study has eliminated two of the potential pathways theorised to be responsible.
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Affiliation(s)
- Nancy Pompeani
- Centre for Chronic Disease, College of Health and Biomedicine, Victoria University, Melbourne, Australia.
| | - Emma Rybalka
- Centre for Chronic Disease, College of Health and Biomedicine, Victoria University, Melbourne, Australia. .,Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia.
| | - Heidy Latchman
- Department of Zoology, La Trobe University, Melbourne, Australia.
| | - Robyn M Murphy
- Department of Zoology, La Trobe University, Melbourne, Australia.
| | - Kevin Croft
- School of Medicine and Pharmacology, University of Western Australia, Perth, Australia.
| | - Alan Hayes
- Centre for Chronic Disease, College of Health and Biomedicine, Victoria University, Melbourne, Australia. .,Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia.
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Teubert A, Thome J, Büttner A, Richter J, Irmisch G. Elevated oleic acid serum concentrations in patients suffering from alcohol dependence. J Mol Psychiatry 2013; 1:13. [PMID: 25408906 PMCID: PMC4224011 DOI: 10.1186/2049-9256-1-13] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 07/09/2013] [Indexed: 01/20/2023] Open
Abstract
Background Alcohol-induced damages such as brain atrophy and fatty liver are closely related to a disturbed lipid metabolism. In animal models, a linkage between chronic alcohol consumption and changes in fatty acid (FA) composition in various organs and cells is well known and there is some indication that this phenomenon could be linked to behavioural alterations associated with alcohol addiction such as craving. However, the influence of ethanol on secretory FA has not been investigated so far. In this study, we therefore aimed at investigating whether there is a significant change of serum FA composition in patients suffering from alcohol dependence. We compared patients before and after treatment (detoxication) with control individuals who did not suffer from addiction. The roles of age, the duration and intensity of alcohol use and lifestyles were considered. Methods Serum FA was measured in 73 male ethanol dependent patients before and after alcohol withdrawal in an in-patient setting. Additionally, of this group, 45 patients were matched with 45 healthy male volunteers as controls. Results We found significant differences in the FA composition before and after detoxication as well as between patients and controls. After detoxication, the values changed towards the ones in healthy controls. The main finding during acute alcohol use was an increased oleic acid concentration above the level of the linoleic acid concentration. Conclusions An elevated oleic/linoleic acid ratio seems to be a state marker for acute alcohol use and may be a relevant trait marker during detoxification and possibly the subsequent therapeutic measures. The results of this pilot study need to be replicated in a larger study also including female patients. Further, the specificity of this potential biomarker needs to be determined.
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Affiliation(s)
- Annekatrin Teubert
- Clinic and Policlinic for Psychiatry and Psychotherapy, University of Rostock, Gehlsheimerstr. 20, 18147 Rostock, Germany ; Department of Forensic Medicine, University of Rostock, St.-Georg-Str. 108, 18055 Rostock, Germany
| | - Johannes Thome
- Clinic and Policlinic for Psychiatry and Psychotherapy, University of Rostock, Gehlsheimerstr. 20, 18147 Rostock, Germany ; College of Medicine, Swansea University, Singleton Park, Swansea, SA2 8PP UK
| | - Andreas Büttner
- Department of Forensic Medicine, University of Rostock, St.-Georg-Str. 108, 18055 Rostock, Germany
| | - Jörg Richter
- Norway Centre for Child and Adolescent Mental Health, Eastern and Southern Norway, P.O. Box 4623, Oslo, 0405 Norway
| | - Gisela Irmisch
- Clinic and Policlinic for Psychiatry and Psychotherapy, University of Rostock, Gehlsheimerstr. 20, 18147 Rostock, Germany
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Shirpoor A, Salami S, Khadem Ansari MH, Ilkhanizadeh B, Abdollahzadeh N. Ethanol promotes rat aortic vascular smooth muscle cell proliferation via increase of homocysteine and oxidized-low-density lipoprotein. J Cardiol 2013; 62:374-8. [PMID: 23849887 DOI: 10.1016/j.jjcc.2013.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Revised: 05/24/2013] [Accepted: 06/01/2013] [Indexed: 01/17/2023]
Abstract
BACKGROUND Increased levels of homocysteine and oxidized low-density lipoprotein (Ox-LDL) are considered independent risk factors for atherosclerosis. However, no previous study has examined the effects of ethanol-induced increase of homocysteine and Ox-LD on aortic vascular smooth muscle cell (VSMC) proliferation. The aim of the present study was to investigate the relationship between ethanol consumption, increase in homocysteine, Ox-LDL, and aortic VSMC proliferation in rats. METHODS AND RESULTS To address this issue, 24 male Wistar rats were randomly divided into three groups: control, sham, and ethanol-treated. Homocysteine, Ox-LDL, lipid profile, and aortic VSMC proliferation were assessed after 42 days. The results revealed a concurrent, significant increase in homocysteine and Ox-LDL levels, lipid profile levels, and aortic VSMC proliferation in the ethanol-treated group compared with the control and sham groups. CONCLUSION Based on these results, we conclude that ethanol apparently exerts aortic VSMC proliferation through increase in homocysteine and Ox-LDL-mediated oxidative stress, which in turn trigger proatherogenic changes in the aortic wall.
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Affiliation(s)
- Alireza Shirpoor
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Science, Urmia, 5756115111, Iran.
| | - Siamak Salami
- Department of Clinical Biochemistry, Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, 5756115111, Iran
| | | | - Behrouz Ilkhanizadeh
- Department of Pathology, Faculty of Medicine, Urmia University of Medical Science, Urmia, 5756115111, Iran
| | - Naseh Abdollahzadeh
- Department of Physiology, Faculty of Medicine, Urmia University of Medical Science, Urmia, 5756115111, Iran
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Lakshman R, Garige M, Gong M, Leckey L, Varatharajalu R, Zakhari S. Is alcohol beneficial or harmful for cardioprotection? GENES AND NUTRITION 2012; 5:111-20. [PMID: 20012900 DOI: 10.1007/s12263-009-0161-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2009] [Accepted: 11/18/2009] [Indexed: 11/26/2022]
Abstract
While the effects of chronic ethanol consumption on liver have been well studied and documented, its effect on the cardiovascular system is bimodal. Thus, moderate drinking in many population studies is related to lower prevalence of coronary artery disease (CAD). In contrast, heavy drinking correlates with higher prevalence of CAD. In several other studies of cardiovascular mortalities, abstainers and heavy drinkers are at higher risk than light or moderate drinkers. The composite of this disparate relation in several population studies of cardiovascular mortality has been a "U-" or "J-"shaped curve. Apart from its ability to eliminate cholesterol from the intima of the arteries by reverse cholesterol transport, another major mechanism by which HDL may have this cardioprotective property is by virtue of the ability of its component enzyme paraoxonase1 (PON1) to inhibit LDL oxidation and/or inactivate OxLDL. Therefore, PON1 plays a central role in the disposal of OxLDL and thus is antiatherogenic. Furthermore, PON1 is a multifunctional antioxidant enzyme that can also detoxify the homocysteine metabolite, homocysteine thiolactone (HTL), which can pathologically cause protein damage by homocysteinylation of the lysine residues, thereby leading to atherosclerosis. We demonstrated that moderate alcohol up regulates liver PON1 gene expression and serum activity, whereas heavy alcohol consumption had the opposite effects in both animal models and in humans. The increase in PON1 activity in light drinkers was not due to preferential distribution of high PON1 genotype in this group. It is well known that wine consumption in several countries shows a remarkable inverse correlation to local rates of CAD mortality. Significantly, apart from its alcohol content, red wine also has polyphenols such as quercetin and resveratrol that are also known to have cardioprotective effects. We have shown that quercetin also up regulates PON1 gene in rats and in human liver cells. The action of quercetin seems to be mediated via the active form of the nuclear lipogenic transcription factor, sterol-regulatory element-binding protein 2 (SREBP2) that is translocated from endoplasmic reticulum to the nucleus. However, the mechanism of action of ethanol-mediated up-regulation of PON1 gene remains to be elucidated. We conclude that both moderate ethanol and quercetin, the two major components of red wine, exhibit cardioprotective properties via the up-regulation of the antiatherogenic gene PON1.
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Affiliation(s)
- Raj Lakshman
- Lipid Research Laboratory, VA Medical Center, Washington, DC, 20422, USA.
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Panoramic Radiographs of Head and Neck Cancer Patients Are Often Evidence of Carotid Artery Atherosclerotic Lesions: A Sign of High-Risk Comorbid Illness. J Oral Maxillofac Surg 2012; 70:1096-101. [DOI: 10.1016/j.joms.2011.05.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Revised: 05/18/2011] [Accepted: 05/19/2011] [Indexed: 01/22/2023]
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Toda N, Ayajiki K. Vascular actions of nitric oxide as affected by exposure to alcohol. Alcohol Alcohol 2010; 45:347-55. [PMID: 20522422 DOI: 10.1093/alcalc/agq028] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Vasodilator substances liberated from endothelial cells, mainly nitric oxide (NO), play important roles in physiologically regulating blood flow and blood pressure and preventing pathological vascular damage. Impairment of these actions promotes the genesis of cardiovascular diseases such as hypertension, cerebral and cardiac hypoperfusion, impaired vasodilatation and atherosclerosis. Low concentrations of alcohol induce increased release of NO from the endothelium due to activation and expression of NO synthase (NOS). In contrast, administration of high concentrations of alcohol or its chronic ingestion impairs endothelial functions in association with reduced NO bioavailability. The endogenous NOS inhibitor asymmetric dimethylarginine may participate in decreased synthesis of NO. Chronic alcohol intake also impairs penile erectile function possibly by interfering with endothelial, but not nitrergic nerve, function. This review article summarizes the vascular actions of NO derived from endothelial and neuronal NOS as affected by alcohol, other than wine, and acetaldehyde in healthy individuals, human materials and various experimental animals.
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Affiliation(s)
- Noboru Toda
- Toyama Institute for Cardiovascular Pharmacology Research, 7-13, 1-Chome, Azuchi-machi, Chuo-ku, Osaka 541-0052, Japan.
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Ferreira Seiva FR, Amauchi JF, Ribeiro Rocha KK, Souza GA, Ebaid GX, Burneiko RM, Novelli ELB. Effects of N-acetylcysteine on alcohol abstinence and alcohol-induced adverse effects in rats. Alcohol 2009; 43:127-35. [PMID: 19251114 DOI: 10.1016/j.alcohol.2008.12.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2008] [Revised: 12/07/2008] [Accepted: 12/08/2008] [Indexed: 12/15/2022]
Abstract
Alcoholism is rampant in modern society and some antioxidant compound could perhaps be useful to reduce the damage done by alcohol consumption and abstinence. The present study was undertaken to investigate the association of N-acetylcysteine (NAC) intake, alcoholism, and alcohol abstinence on lipid profile, in vivo low-density lipoprotein (LDL) oxidation, oxidative stress, and antioxidant status in serum and liver of rats. Initially, male Wistar 30 rats were divided into two groups: (C, N=6) given standard chow and water; (E, N=24) receiving standard chow and aqueous ethanol solution in semi-voluntary research. After 30 days of ethanol exposure, (E) group was divided into four subgroups (N=6/group): (E-E) continued drinking 30% ethanol solution; (E-NAC) drinking ethanol solution containing 2 g/L NAC; (AB) changed ethanol solution to water; (AB-NAC) changed ethanol to aqueous solution 2 g/L NAC. After 15 days of the E-group division, E-E rats had higher serum alanine transaminase, lower body weight, and surface area, despite higher energy intake than C. E-E rats had also lower feed efficiency, dyslipidemia with enhanced triacylglycerol, very low-density lipoprotein (VLDL), lipid hydroperoxide (LH) and in vivo oxidized-LDL (ox-LDL). AB, E-NAC, and AB-NAC rats ameliorated serum oxidative stress markers and normalized serum lipids. E-E rats had higher hepatic LH and lower reduced glutathione (GSH)/oxidized glutathione (GSSG) ratio than C, indicating hepatic oxidative stress. AB and E-NAC rats normalized hepatic LH, GSSG, and the GSH/GSSG ratio, compared to E-E. AB-NAC rats had the lowest serum ox-LDL, hepatic LH levels, and the highest GSH reductase activity in hepatic tissue. In conclusion, the present study brought new insights into alcohol consumption, because ethanol exposure enhanced serum in vivo ox-LDL, as well as serum and hepatic oxidative stress. N-acetylcysteine offers promising therapeutic value to inhibit ethanol-induced adverse effects. Ethanol withdrawal had beneficial effects on serum lipids, but was more effective when coupled with NAC supplementation. Ethanol abstinence and NAC intake interact synergistically, improving serum lipids and hepatic antioxidant defenses.
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Affiliation(s)
- Fábio Rodrigues Ferreira Seiva
- Department of Clinical and Cardiology, School of Medicine, São Paulo State University, UNESP, 18618-000, Botucatu, São Paulo, Brazil
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Gordon JL, Lavoie KL, Arsenault A, Ditto B, Bacon SL. Health behaviors and endothelial function. J Behav Med 2007; 31:5-21. [PMID: 17906923 DOI: 10.1007/s10865-007-9129-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2007] [Accepted: 08/17/2007] [Indexed: 01/17/2023]
Abstract
An unhealthy lifestyle, including excess caloric intake, lack of exercise, smoking, and excessive alcohol consumption, increases one's risk of developing cardiovascular disease (CVD). However, the exact mechanisms by which these behaviors influence the development and progression of CVD have yet to be determined. Endothelial function (EF) has been shown to be a potent predictor of CVD, yet the effects of health behaviors on EF are not clear. The literature assessing the role of four health behaviors, obesity (a proxy of excess caloric intake), smoking, physical inactivity, and alcohol consumption, on the development of endothelial dysfunction is reviewed. Potential mechanisms through which these behaviors may influence EF are discussed. Smoking, being overweight or obese, and physical inactivity are all associated with decreased EF. A direct causal relationship between these measures and EF is suggested by the fact that improvements in these behaviors leads to parallel improvements in EF. The influence of alcohol consumption is somewhat more contentious, with some studies indicating a dose-response relationship such that those with greater consumption have poor EF. However, other studies have shown that those who drink moderately have the best EF. Although there is a growing body of literature implicating poor health behaviors in the development of endothelial dysfunction, more work is needed to establish the exact mechanisms by which this occurs. To our knowledge, there are no studies that have assessed the impact of multiple health behaviors or the interaction of health behaviors on EF.
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Affiliation(s)
- Jennifer L Gordon
- Montreal Behavioral Medicine Centre, Department of Nuclear Medicine, Montreal Heart Institute, 5000 Bélanger East, Montreal, QC, Canada
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Puddey IB, Beilin LJ. Alcohol and Hypertension. Hypertension 2005. [DOI: 10.1016/b978-0-7216-0258-5.50135-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Waddington E, Puddey IB, Croft KD. Red wine polyphenolic compounds inhibit atherosclerosis in apolipoprotein E-deficient mice independently of effects on lipid peroxidation. Am J Clin Nutr 2004; 79:54-61. [PMID: 14684397 DOI: 10.1093/ajcn/79.1.54] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Lipid peroxidation is thought to play an important role in the pathogenesis of atherosclerosis. Fatty acid peroxidation products such as hydroxyeicosatetraenoic acids and F(2)-isoprostanes have been found in advanced human atherosclerotic plaques. However, little is known about the formation of these products during lesion development. OBJECTIVE This study examined stable biomarkers of lipid oxidative damage in relation to atherosclerotic disease progression in apolipoprotein E-deficient (Apoe(-/-)) mice and retardation of the disease by red wine polyphenols. DESIGN One hundred male Apoe(-/-) mice and 50 male control (C57BL/6J) mice were given a high-fat, high-cholesterol diet for 20 wk. To examine the effect of the polyphenolic compounds on lesion development, 50 of the Apoe(-/-) mice were also given dealcoholized red wine for the duration of the study. RESULTS Aortic lipid deposition was significantly greater in the Apoe(-/-) mice than in the control mice (P < 0.01). Plasma and aortic F(2)-isoprostanes did not differ between the treatment groups. Plasma concentrations of monocyte chemoattractant protein 1, which has been implicated in the development of atherosclerosis, were significantly higher in the Apoe(-/-) mice than in the control mice up to 16 wk (P < 0.05). Hydroxyeicosatetraenoic acid concentrations increased significantly over time in all groups (P < 0.05). Red wine polyphenols had no effect on markers of lipid peroxidation or monocyte chemoattractant protein 1 concentrations, but lipid deposition in the aorta at age 26 wk was significantly less in the mice given red wine than in those not given red wine. CONCLUSION These results suggest that lipid deposition is independent of lipid oxidation and that the protective action of red wine polyphenols is independent of any antioxidant action of these compounds.
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Affiliation(s)
- Emma Waddington
- School of Medicine and Pharmacology, University of Western Australia, Royal Perth Hospital, Perth, Australia
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Rao MN, Marmillot P, Gong M, Palmer DA, Seeff LB, Strader DB, Lakshman MR. Light, but not heavy alcohol drinking, stimulates paraoxonase by upregulating liver mRNA in rats and humans. Metabolism 2003; 52:1287-94. [PMID: 14564680 DOI: 10.1016/s0026-0495(03)00191-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Paraoxonase 1 (PON) may contribute to the cardioprotective action of high-density lipoprotein (HDL) because it inhibits low-density lipoprotein (LDL) oxidation, a prerequisite for the onset of atherosclerosis. Because light drinking and heavy drinking have diametrically opposite effects on cardioprotection, we have determined the effects of ethanol dosage on rat serum PON activity and its hepatic expression. Furthermore, we have investigated PON activity and polymorphism in human light and heavy drinkers. Our results confirm that HDL-PON inhibited LDL oxidation, destroyed oxidized LDL, and inhibited its uptake by macrophages. Light ethanol feeding caused a 20% to 25% (P <.05) increase in PON activity in both serum and liver and a 59% (P <.001) increase in the level of liver PON mRNA compared with pair-fed control rats. In contrast, heavy ethanol feeding caused a 25% (P <.05) decrease in serum and liver PON activities with a 51% (P <.01) decrease in liver PON mRNA level. Light drinkers had a 395% (P <.001) higher, whereas heavy drinkers had a 45% (P <.001) lower serum PON activity compared with nondrinkers. Significantly, the number of homozygotes versus heterozygotes with respect to high or low activity PON phenotype was similar in all the groups. Therefore, we conclude that light drinking upregulates, whereas heavy drinking downregulates PON activity and its expression, irrespective of its genetic polymorphism.
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Affiliation(s)
- Manjunath N Rao
- Lipid Research Laboratory and Gastrointestinal and Hepatology Section, Veterans Affairs Medical Center, Washington DC 20422, USA
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Waddington EI, Croft KD, Sienuarine K, Latham B, Puddey IB. Fatty acid oxidation products in human atherosclerotic plaque: an analysis of clinical and histopathological correlates. Atherosclerosis 2003; 167:111-20. [PMID: 12618275 DOI: 10.1016/s0021-9150(02)00391-x] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Markers of lipid peroxidative damage have been shown to be elevated in individuals with risk factors for cardiovascular disease, and human atherosclerotic plaque contains products resulting from lipid peroxidation. In particular, the presence of fatty acid oxidation products such as hydroxyeicosatetraenoic acids (HETEs) has previously been suggested as a marker of plaque instability and symptomatic cerebrovascular disease. The aim of the present study was to quantitate the levels of various oxidation products of linoleic acid (HODEs) and arachidonic acid (HETEs), respectively, in human atherosclerotic plaque tissue and assess their level in relation to plaque histopathology, symptoms of cerebrovascular disease and preexisting atherosclerotic risk factors. We also assessed the correlation between the levels of the hydroxy fatty acid compounds and F(2)-isoprostanes, an established marker of in vivo free radical mediated oxidation. Hydroxy fatty acid oxidation products were identified in all histological subtypes of advanced plaque. However, there were no significant differences in levels between the histopathologically classified sub-groups or between patients symptomatic or asymptomatic for cerebrovascular disease. Arachidonic acid oxidation products were significantly higher in those subjects who also had symptomatic peripheral vascular disease. The level of linoleic acid oxidation products was significantly higher in individuals who consumed alcohol on a regular basis. While F(2)-isoprostanes and fatty acid oxidation products were highly correlated (P<0.01), levels of the hydroxy fatty acid compounds were 20-40-fold higher than F(2)-isoprostanes. Chiral analysis of the plaque extracts indicated that all HODEs and HETEs originated primarily from non-enzymatic lipid peroxidation. While our results do not support previous reports that fatty acid oxidation products such as the HETEs are associated with plaque instability and symptomatic cerebrovascular disease, further work is warranted to determine the potential of these compounds as circulating markers for underlying atherosclerotic disease and lipid peroxidative stress.
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Affiliation(s)
- Emma I Waddington
- Department of Medicine, Western Australian Institute for Medical Research, Royal Perth Hospital, University of Western Australia, GPO Box X2213, Australia
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Waddington EI, Puddey IB, Mori TA, Croft KD. Similarity in the distribution of F(2)-isoprostanes in the lipid subfractions of atherosclerotic plaque and in vitro oxidised low density lipoprotein. Redox Rep 2003; 7:179-84. [PMID: 12189049 DOI: 10.1179/135100002125000433] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Oxidation of low density lipoprotein (LDL) in vivo is thought to play a critical role in the initiation of atherosclerosis. F(2)-isoprostanes are compounds resulting from non-enzymatic oxidation of arachidonic acid and elevated levels are present in human atherosclerotic plaque. However, little is known about the formation of F(2)-isoprostanes in plaque lesions or their distribution in lipid subclasses. Given that LDL and tissue lipid subfractions (such as phospholipids, cholesterol esters and triglycerides) all contain significant levels of arachidonic acid, the aim of this study was to examine the relative distribution of F(2)-isoprostanes in the different lipid fractions of LDL oxidised in vitro, and compare this to the distribution in atherosclerotic plaque. The results reveal that while the majority of F(2)-isoprostanes are present in the phospholipid or surface lipid fractions, the core lipids (cholesterol esters/triglycerides) contribute at least 10% of the total F(2)-isoprostanes in both LDL oxidised in vitro and human atherosclerotic plaque. The remarkably similar profiles between the oxidised LDL and advanced atherosclerotic plaque suggests oxidation in vivo, is predominantly via non-enzymatic processes directed towards the surface lipids.
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Affiliation(s)
- E I Waddington
- Department of Medicine, University of Western Australia, Royal Perth Hospital and Western Australian Institute for Medical Research, GPO Box X2213, Perth, Western Australia 6847, Australia
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Gorinstein S, Caspi A, Libman I, Trakhtenberg S. Cardioprotective effect of alcohol consumption: contemporary concepts. Nutr Res 2002. [DOI: 10.1016/s0271-5317(02)00374-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Hannuksela ML, Liisanantti MK, Savolainen MJ. Effect of alcohol on lipids and lipoproteins in relation to atherosclerosis. Crit Rev Clin Lab Sci 2002; 39:225-83. [PMID: 12120782 DOI: 10.1080/10408360290795529] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Several studies indicate that light-to-moderate alcohol consumption is associated with a low prevalence of coronary heart disease. An increase in high-density lipoprotein (HDL) cholesterol is associated with alcohol intake and appears to account for approximately half of alcohol's cardioprotective effect. In addition to changes in the concentration and composition of lipoproteins, alcohol consumption may alter the activities of plasma proteins and enzymes involved in lipoprotein metabolism: cholesteryl ester transfer protein, phospholipid transfer protein, lecithin:cholesterol acyltransferase, lipoprotein lipase, hepatic lipase, paraoxonase-1 and phospholipases. Alcohol intake also results in modifications of lipoprotein particles: low sialic acid content in apolipoprotein components of lipoprotein particles (e.g., HDL apo E and apo J) and acetaldehyde modification of apolipoproteins. In addition, "abnormal" lipids, phosphatidylethanol, and fatty acid ethyl esters formed in the presence of ethanol are associated with lipoproteins in plasma. The effects of lipoproteins on the vascular wall cells (endothelial cells, smooth muscle cells, and monocyte/macrophages) may be modulated by ethanol and the alterations further enhanced by modified lipids. The present review discusses the effects of alcohol on lipoproteins in cholesterol transport, as well as the novel effects of lipoproteins on vascular wall cells.
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Affiliation(s)
- Minna L Hannuksela
- Department of Internal Medicine, Biocenter Oulu, University of Oulu, Finland
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17
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Belleville J. The French paradox: possible involvement of ethanol in the protective effect against cardiovascular diseases. Nutrition 2002; 18:173-7. [PMID: 11844649 DOI: 10.1016/s0899-9007(01)00721-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVES This review surveyed the literature on the cardioprotective effects of moderate alcohol consumption. METHODS The putative cardioprotective effects of alcohol and other substances in alcoholic beverages are discussed by taking "the French paradox" as a starting point. A survey of the literature highlighted various hypotheses explaining the protective effects of moderate alcohol consumption. RESULTS The positive effects of moderate quantities of alcohol have been attributed in part to increased plasma levels of high-density lipoprotein, an inhibition of platelet aggregation, and improved endothelial function. Many investigators have claimed that wine is the significant factor explaining the French paradox. Red wine has been shown ex vivo to inhibit low-density lipoprotein oxidation, increase antioxidant capacity in humans, and reduce susceptibility of human plasma to lipid peroxidation. The non-alcoholic fraction of wine, represented mainly by phenolic compounds, may be the primary factor responsible for this protective effect. However, the protective effects are not restricted to a particular type of alcoholic drink, suggesting that alcohol per se rather than compounds specific to certain beverages reduces mortality risk. CONCLUSIONS It is difficult to explain the effect of alcohol on risk factors associated with cardiovascular diseases by a uniform biochemical mechanism. Moreover, its protective effects are counterbalanced by its addictive properties.
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Affiliation(s)
- Jacques Belleville
- Unité de Nutrition Cellulaire et Métabolique, Faculté des Sciences Gabriel, Dijon, France.
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18
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Puddey IB, Zilkens RR, Croft KD, Beilin LJ. Alcohol and endothelial function: a brief review. Clin Exp Pharmacol Physiol 2001; 28:1020-4. [PMID: 11903307 DOI: 10.1046/j.1440-1681.2001.03572.x] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
1. In spite of the dose-related effects of alcohol consumption to increase blood pressure, regular light to moderate alcohol intake appears to confer protection against both coronary artery disease and ischaemic stroke. In contrast, heavy alcohol consumption increases the risk of coronary artery disease and the risk of both haemorrhagic and ischaemic stroke. 2. Effects of alcohol consumption on endothelial cell function may be relevant to these disparate effects on cardiovascular outcomes. In in vitro animal studies, low doses of alcohol have been demonstrated to increase release of nitric oxide and augment endothelium-mediated vasodilatation, whereas higher doses impair endothelium-dependent relaxation responses. In contrast, chronic administration of alcohol to rats has generally been associated with tolerance to the acute inhibitory effects of alcohol on endothelium-mediated vasodilatation and may even result in augmentation of such responses. 3. The few human studies to date that have examined the effects of alcohol on endothelial function have focused on postischaemic flow-mediated dilation of the brachial artery (FMD). Although blunted FMD responses have been reported in alcoholic subjects, acute administration of alcohol or short-term interventions to reduce alcohol intake have had no effect to either improve or impair FMD. 4. Further studies in humans assessing acute and longer term dose-related effects of alcohol on endothelial function in both conduit and resistance vessels will be necessary if the relevance of the findings from in vitro and in vivo animal studies are to be understood in the context of the complex interrelationships of alcohol with cardiovascular disease.
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Affiliation(s)
- I B Puddey
- University of Western Australia, Department of Medicine, Royal Perth Hospital, Western Australia, Australia.
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19
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Abstract
Numerous epidemiological studies have shown an inverse correlation between moderate consumption of alcoholic drinks and the risk of coronary heart disease. Wine, especially red wine, may be more favorable in this respect than beer or spirits because of its high content of flavonoids. These polyphenols originate from the skins, seeds, and vine stems of the grapes while some are formed during the process of vinification. In nature they exhibit a wide range of biological effects as antioxidants, antimicrobials, and modulators of various enzyme systems. Potential beneficial effects for humans have been demonstrated in experimental studies and include influences on the oxidation of LDL-cholesterol, on platelet aggregation, and on prostaglandin and nitric oxide metabolism. However, most of these studies concern semi in vivo experiments and research in animal models; data from human intervention trials are scarce. Furthermore, little is known about the absorption, bioavailability, and bioactivity of most of these compounds because of difficulties in reliable quantification in biological fluids. Until these issues are well addressed, and despite the enthusiasm and faith of many believers, evidence-based medicine justifies a critical attitude towards the application of these compounds outside the context of scientific research. Yet, there is no need to deny their potential, nor should we close our eyes to the blessings of the grape.
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Affiliation(s)
- A van de Wiel
- Department of Internal Medicine, Eemland Hospital, P.O. Box 1502, 3800 BM, Amersfoort, The Netherlands.
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20
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Gorinstein S, Caspi A, Pawelzik E, Deldago-Licon E, Libman I, Trakhtenberg S, Weisz M, Martin-Belloso O. Proteins of beer affect lipid levels in rats. Nutr Res 2001. [DOI: 10.1016/s0271-5317(01)00311-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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Waddington E, Sienuarine K, Puddey I, Croft K. Identification and Quantitation of Unique Fatty Acid Oxidation Products in Human Atherosclerotic Plaque Using High-Performance Liquid Chromatography. Anal Biochem 2001; 292:234-44. [PMID: 11355856 DOI: 10.1006/abio.2001.5075] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Oxidation of lipoproteins, particularly low-density lipoprotein, is thought to play a major role in the development of atherosclerosis. We set out to identify and quantitate the major fatty acid oxidation products in human atherosclerotic plaque obtained from individuals undergoing carotid endarterectomy. Oxidized lipids were extracted from plaque homogenate under conditions to prevent artifactual oxidation. Identification and quantitation was performed using HPLC and GC-MS. High levels of hydroxyoctadecanoic acids (0.51 +/- 0.17 ng/microg of linoleic acid), 15-hydroxyeicosatetranoic acid (HETE) (0.66 +/- 0.24 ng/microg of arachidonic acid), and 11-HETE (0.84 +/- 0.24 ng/microg of arachidonic acid) were detected in all atherosclerotic plaques (n = 10). Low levels of 9-oxo-octadecanoic acid (oxoODE) (0.04 +/- 0.01 ng/microg of linoleic acid), were present in all samples, while 13-oxoODE (0.01 +/- 0.008 ng/microg of linoleic acid) was present in only 4 of the 10 plaque samples. Of interest was the identification of two previously unidentified compounds in atherosclerotic plaque, 11-oxo-eicosatetranoic acid in 9 of the 10 samples and 5,6-dihydroxyeicosatetranoic acid in 3 samples. Chiral analysis revealed that all the major compounds identified in this study are of a nonenzymatic origin. This study is the first to provide a convenient HPLC method to quantify all the products of both linoleic acid and arachidonic acid oxidation in human atherosclerotic plaque. The quantitation of lipid peroxidation products in plaque may be important given the potential biological activity of these compounds and their possible relationship to plaque pathogenesis and instability.
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Affiliation(s)
- E Waddington
- Department of Medicine, Royal Perth Hospital, Perth, Western Australia, Australia
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22
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Bonnefont-Rousselot D, Rouscilles A, Bizard C, Delattre J, Jore D, Gardès-Albert M. Antioxidant effect of ethanol toward in vitro peroxidation of human low-density lipoproteins initiated by oxygen free radicals. Radiat Res 2001; 155:279-87. [PMID: 11175662 DOI: 10.1667/0033-7587(2001)155[0279:aeoeti]2.0.co;2] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study was designed to evaluate the effect of ethanol on the peroxidation of human low-density lipoprotein (LDL) initiated by oxygen free radicals (O(2)(.-) and (.)OH in the absence of ethanol; O(2)(.-) and ethanol-derived peroxyl radicals, RO(2)(.), in the presence of ethanol) generated by gamma radiolysis. Initial radiolytic yields as determined by several markers of lipid peroxidation [i.e. decrease in endogenous antioxidants alpha-tocopherol and beta-carotene, formation of conjugated dienes and of thiobarbituric acid-reactive substances (TBARS)] were determined in 3 g liter(-1) LDLs (expressed as total LDL concentration) in the absence of ethanol or its presence at six different concentrations (0.42-17 x 10(-2) mol liter(-1)). Ethanol acted as an antioxidant by decreasing the rate of consumption of LDL endogenous antioxidants and the yields of formation of lipid peroxidation products, and by delaying the onset of the propagation phase for conjugated dienes and TBARS. With regard to the different markers studied, except for alpha-tocopherol and beta-carotene consumption, the effect of ethanol did not appear to be dependent on its concentration. Indeed, (.)OH were scavenged by ethanol at the lowest ethanol concentration (0.42 x 10(-2) mol liter(-1)), leading to RO(2)(.). These RO(2)(.) resulted in lower radiation-induced yields related to endogenous antioxidant consumption or to formation of lipid peroxidation products (for example, approximately 10% of RO(2)(.) oxidized LDLs from TBARS). Thus, under our in vitro conditions, ethanol behaved as an antioxidant when added to the LDL solutions. This should be taken into account in the reported antioxidant activity of wine. This is also of interest when lipophilic compounds have to be added as ethanolic solutions to LDLs to evaluate in vitro their antioxidant activity toward LDL peroxidation.
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Affiliation(s)
- D Bonnefont-Rousselot
- Laboratoire de Biochimie, Hôpital de la Salpêtrière, 47, bld de l'Hôpital, 75651 Paris Cedex 13, France
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23
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Abstract
Physicians should be aware of the growing evidence supporting the nutritional and health benefits of moderate consumption of alcohol as part of a healthy lifestyle. The recently approved voluntary label on wine ("the proud people who made this wine encourage you to consult your family doctor about the health effects of wine consumption") implies that physicians should promote wine as the preferred source of dietary alcohol. However, studies evaluating the relative benefits of wine versus beer versus spirits suggest that moderate consumption of any alcoholic beverage is associated with lower rates of cardiovascular disease. From a nutritional standpoint, beer contains more protein and B vitamins than wine. The antioxidant content of beer is equivalent to that of wine, but the specific antioxidants are different because the barley and hops used in the production of beer contain flavonoids different from those in the grapes used in the production of wine. The benefits of moderate alcohol consumption have not been generally endorsed by physicians for fear that heavy consumers may consider any message as a permissive license to drink in excess. Discussions with patients regarding alcohol consumption should be made in the context of a general medical examination. There is no evidence to support endorsement of one type of alcoholic beverage over another. The physician should define moderate drinking (1 drink per day for women and 2 drinks per day for men) for the patient and should review consumption patterns associated with high risk.
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Affiliation(s)
- M A Denke
- Center for Human Nutrition, University of Texas Southwestern Medical Center at Dallas, Veterans Health Administration North Texas Health Care System, USA.
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24
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Emeson EE, Manaves V, Emeson BS, Chen L, Jovanovic I. Alcohol Inhibits the Progression as Well as the Initiation of Atherosclerotic Lesions in C57Bl/6 Hyperlipidemic Mice. Alcohol Clin Exp Res 2000. [DOI: 10.1111/j.1530-0277.2000.tb02117.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Gorinstein S, Caspi A, Zemser M, Trakhtenberg S. Comparative contents of some phenolics in beer, red and white wines. Nutr Res 2000. [DOI: 10.1016/s0271-5317(99)00145-1] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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26
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van Golde PH, Sloots LM, Vermeulen WP, Wielders JP, Hart HC, Bouma BN, van de Wiel A. The role of alcohol in the anti low density lipoprotein oxidation activity of red wine. Atherosclerosis 1999; 147:365-70. [PMID: 10559522 DOI: 10.1016/s0021-9150(99)00206-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Oxidation of low density lipoprotein cholesterol (LDL-c) is supposed to play a role in the generation of atherosclerotic lesions. Grape derived beverages supply a large number of nutritional antioxidants because of their high content of polyphenols. This might be one of the mechanisms behind the supposed beneficial effect of red wine. Wine also contains alcohol and its role in oxidation processes especially in vivo is unclear. In this study the effect of daily red wine consumption for 2 weeks on oxidizability status of LDL was investigated. The role of alcohol in LDL oxidation was further explored in in vitro experiments. After abstinence from alcoholic beverages, grape juices and tea for a week, seven healthy male volunteers consumed 375 ml of red wine (30 g alcohol) per day during 2 weeks. At the start and end of the drinking period blood samples were taken and the susceptibility of LDL-c to copper-induced oxidation was analyzed with the addition of distilled water (control) and dilutions of a 12% alcohol solution, white wine and red wine. Although red wine at concentrations achievable in vivo caused a significant prolongation of the lag-time of metal ion dependent LDL oxidation in vitro (85.9+/-23.0-114.1+/-30.8 min, P<0. 001), a significant shortening of lag-time was found in vivo after the 2 weeks of wine consumption (56.3+/-13.0 min, P<0.001). A shorter lag-time compared to the control was found for both alcohol and white wine in vitro. The changed oxidizability status of LDL after 2 weeks of wine consumption made it more susceptible for the in vitro antioxidant effect of red wine. At low dilutions red grape juice extended lag-time as well, which was not influenced by the addition of alcohol. Red wine has a strong inhibitory effect on copper-induced oxidation of LDL in vitro, while red grape juice has a minor effect, an effect which should be attributed to the non alcohol components in the beverages. In vivo, however, this effect can be overshadowed by the prooxidant influence of alcohol. The balance between alcohol and polyphenols of a wine may be critical for its in vivo effect on LDL oxidation.
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Affiliation(s)
- P H van Golde
- Department of Internal Medicine, Eemland Hospital, PO Box 1502, 3800 BM, Amersfoort, The Netherlands
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27
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Bunout D. Nutritional and metabolic effects of alcoholism: their relationship with alcoholic liver disease. Nutrition 1999; 15:583-9. [PMID: 10422091 DOI: 10.1016/s0899-9007(99)00090-8] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Excessive alcohol ingestion disturbs the metabolism of most nutrients. Although alcohol can lead to severe hypoglycemia, alcoholics are usually glucose intolerant, probably due to a inhibition of glucose-stimulated insulin secretion. Ethanol intake also leads to negative nitrogen balance and an increased protein turnover. Alcohol also alters lipid metabolism, causing a profound inhibition of lipolysis. Looking for an association between alcohol intake, nutrition, and alcoholic liver disease, we have observed a higher prevalence of subclinical histologic liver damage among obese alcoholics. Multivariate analysis in a large group of alcoholics has shown that obesity is an independent predictor of alcoholic liver disease. Other authors have reported that alcoholics with a history of obesity have a two to three times higher risk of having alcoholic liver disease than non-obese alcoholics. The possible explanation for this association is that the microsomal system, which plays an important pathogenic role in alcoholic liver disease, is induced in non-alcoholic obese subjects and alcoholics. Also, peripheral blood monocyte cells of obese alcoholics produce higher levels of interleukin-1, a cytokine that can contribute to liver damage. The ingestion of polyunsaturated fatty acids can also increase the damaging effects of alcohol on the liver, as has been demonstrated in rats subjected to continuous intragastric infusion of alcohol. Observations in human alcoholics have shown that liver damage is associated with a higher ratio of C:18:1/C:18:0 and a lower ratio of C:22:4/C:18:2 in liver lipids, consistent with an induction of delta 9 desaturase and an increased peroxidation of C:22:4.
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Affiliation(s)
- D Bunout
- INTA, University of Chile, Santiago, Chile.
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28
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Puddey IB, Croft KD, Abdu-Amsha Caccetta R, Beilin LJ. Alcohol, free radicals and antioxidants. NOVARTIS FOUNDATION SYMPOSIUM 1999; 216:51-62; discussion 63-7, 152-8. [PMID: 9949787 DOI: 10.1002/9780470515549.ch5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Antioxidants in alcoholic beverages, especially polyphenolic compounds in red wine, have been proposed as an important contributory factor to the protective effect of regular alcohol use against atherosclerotic cardiovascular disease. The postulated mechanism involves quenching of free radicals with decreased oxidative damage to low density lipoprotein (LDL) hence reducing its potential atherogenicity. There is definitive in vitro evidence that extracts of red wine, white wine, grape juice and beer can inhibit the oxidation of LDL, the degree of inhibition being directly proportional to beverage polyphenolic content and able to be abolished by prior stripping of the polyphenolics from the alcoholic beverage. These in vitro antioxidant effects have not been reliably reproduced in vivo after acute or short-term administration of alcoholic beverages. In fact, in some studies where white wine or beer have been given over 2-4 week periods, enhanced oxidizability of LDL cholesterol has been reported. Such findings are consistent with the possibility that, depending on the beverage, a predominant pro-oxidant effect of alcohol itself may outweigh any antioxidant effect of beverage polyphenolics. Increased oxidant stress and enhanced lipid peroxidation with alcohol have several biologically plausible explanations and have been reported as possible mechanisms for alcohol-related toxicity and injury in various tissues. Therefore, before the promotion of any particular benefits of ingestion of polyphenolics from alcoholic beverages (especially red wine) for prevention of atherosclerotic cardiovascular disease, the balance of redox effects in vivo will need careful further clinical and laboratory evaluation.
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Affiliation(s)
- I B Puddey
- Department of Medicine, Royal Perth Hospital, University of Western Australia, Australia
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29
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Kiechl S, Willeit J, Rungger G, Egger G, Oberhollenzer F, Bonora E. Alcohol consumption and atherosclerosis: what is the relation? Prospective results from the Bruneck Study. Stroke 1998; 29:900-7. [PMID: 9596232 DOI: 10.1161/01.str.29.5.900] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND AND PURPOSE Potential effects of regular alcohol consumption on atherogenesis are still controversial mainly due to the lack of prospective population-based studies. METHODS The Bruneck Study is a prospective population-based survey of atherosclerosis and its risk factors. The study population comprises a sex- and age-stratified random sample of men and women aged 40 to 79 years. Participation and follow-up were more than 90% complete. Changes in carotid atherosclerosis between the 1990 baseline and the first follow-up in 1995 were monitored by high-resolution duplex ultrasonography. Alcohol intake was quantified with a standardized questionnaire and prospective diet records. RESULTS Alcohol consumption less than once a week (occasional drinking) had no effect on atherogenesis. The association between regular alcohol intake and incident carotid atherosclerosis (early atherogenesis) was J-shaped, with light drinkers facing a lower risk than either heavy drinkers or abstainers. Protection offered by alcohol consumption of <50 g/d appeared to act through inhibition of the injurious action of high levels of low-density lipoprotein (LDL) cholesterol. Excess risk of incident atherosclerosis observed among heavy alcohol consumers (> or =100 g/d) clearly surpassed the risk burden afforded by heavy smoking. The association between regular alcohol intake and incident carotid stenosis (advanced atherogenesis) was U-shaped. Odds ratios were generally shifted toward protection and did not rely on LDL cholesterol levels. We failed to find any differential effects of alcohol from various sources. All associations remained independently significant when we adjusted for lifestyle, coincidental smoking, and the metabolic complex associated with drinking. CONCLUSIONS Our findings support the view that adverse and beneficial effects of alcohol on arterial disease are mediated in part by a dose-dependent promotion or deceleration of atherogenesis. The protection afforded by light drinking may possibly be attributed to antithrombotic effects and inhibition of the atherogenic action of high levels of LDL cholesterol.
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Affiliation(s)
- S Kiechl
- Department of Neurology, Innsbruck University Clinic, Austria
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30
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Gorinstein S, Zemser M, Weisz M, Haruenkit R, Trakhtenberg S. The influence of dry matter of different alcoholic beverages on lipids, proteins, and antioxidant activity in serum of rats. J Nutr Biochem 1998. [DOI: 10.1016/s0955-2863(97)00169-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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31
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Obisesan TO, Hirsch R, Kosoko O, Carlson L, Parrott M. Moderate wine consumption is associated with decreased odds of developing age-related macular degeneration in NHANES-1. J Am Geriatr Soc 1998; 46:1-7. [PMID: 9434658 DOI: 10.1111/j.1532-5415.1998.tb01005.x] [Citation(s) in RCA: 100] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To determine the association between alcohol intake and the risk of developing age-related macular degeneration (AMD). DESIGN Case control study. PARTICIPANTS The sample consisted of 3072 adults 45 to 74 years of age with macular changes indicative of AMD who participated in a nationally representative sample of the first National Health Nutrition and Examination Survey (NHANES-1) between 1971 and 1975: (a) the ophthalmology data set and (b) the medical history questionnaire. MAIN OUTCOME MEASURES Alcohol intake and the risk of developing AMD were measured. AMD was determined by staff at the National Eye Institute by fundoscopy examination using standardized protocol. RESULTS Overall, 184 individuals (6%) had AMD. We observed a statistically significant but negative association between AMD and the type of alcohol consumed in a bivariate model (OR 0.86; 95% CI 0.73, 0.99). In the same model, age maintained a consistently strong association with AMD (OR 1.08; 95% CI 1.06-1.11; P < .001). Among the different types of alcohol consumed in NHANES-1 (beer, wine, and liquor), the effect of wine, either alone (OR 0.66; 95% CI 0.55-0.79) or in combination with beer (OR 0.66; 95% CI 0.55-0.79) or liquor (OR 0.74; 95% CI 0.63-0.86), dominated the negative association observed between AMD and alcohol type. Additionally, a statistically significant and negative association between wine and AMD was noted after adjusting for the effect of age, gender, income, history of congestive heart failure, and hypertension (OR 0.81; 95% CI 0.67-0.99). CONCLUSION Moderate wine consumption is associated with decreased odds of developing AMD. Health promotion and disease prevention activities directed at cardiovascular disease may help reduce the rate of AMD-associated blindness among older people. The nature and pathophysiology of this association warrant further investigation.
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Affiliation(s)
- T O Obisesan
- Department of Internal Medicine, Howard University Hospital, Washington, DC 20060, USA
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32
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Ayaori M, Ishikawa T, Yoshida H, Suzukawa M, Nishiwaki M, Shige H, Ito T, Nakajima K, Higashi K, Yonemura A, Nakamura H. Beneficial effects of alcohol withdrawal on LDL particle size distribution and oxidative susceptibility in subjects with alcohol-induced hypertriglyceridemia. Arterioscler Thromb Vasc Biol 1997; 17:2540-7. [PMID: 9409225 DOI: 10.1161/01.atv.17.11.2540] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
LDL subclass pattern B, reported to have a higher prevalence in hypertriglyceridemics (HTGs), is considered to be associated with an increased risk for coronary artery disease, and the small dense LDL characteristic of this pattern is susceptible to oxidative modification. Alcohol is considered one of the most frequent causes of increases in plasma triglyceride (TG) levels. We investigated the effects of alcohol withdrawal on LDL subclass distribution and oxidizability in drinkers with different plasma TG levels. Thirty-seven male subjects with relatively heavy alcohol-consumption habits were divided into four groups; normotriglyceridemic (NTG)/withdrawal (n = 11), NTG/control (n = 8), hypertriglyceridemic (HTG)/withdrawal (n = 10), and HTG/control (n = 8). Both withdrawal groups abstained form alcohol for 4 weeks, while the control subjects maintained their usual intake of alcohol. Peak LDL particle diameter (PPD) was smaller in the combined HTG groups than in the combined NTG groups before abstinence, although PPD increased significantly (P < .01) from 25.5 to 26.1 nm in the HTG/withdrawal group. Before abstinence, lag times preceding LDL oxidation in the combined HTG groups were shorter than in the combined NTG groups; after withdrawal, lag time was prolonged significantly (P < .01) from 49.9 to 57.3 minutes in the HTG-withdrawal group. No significant changes in PPD and lag time were observed in the other three groups. Significant correlations (P < .05) were observed between the change (delta) in the lag time and delta TG and between delta lag time and delta PPD. We conclude that in alcohol-induced HTG subjects, alcohol withdrawal has beneficial effects on the LDL profile by shifting the particle size from smaller to larger and decreasing its susceptibility to oxidation.
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Affiliation(s)
- M Ayaori
- First Department of Internal Medicine, National Defense Medical College, Saitama, Japan.
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33
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PUDDEY IANB, CROFT KEVIN. Alcoholic beverages and lipid peroxidation: relevance to cardiovascular disease. Addict Biol 1997; 2:269-76. [PMID: 26735783 DOI: 10.1080/13556219772561] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Overall there is good evidence that alcohol consumption induces oxidative stress, and leads to lipid peroxidation, effects which have been linked to alcohol-related toxicity and disease and may be relevant to alcoholatherosclerosis interrelationships. On the other hand, a protective effect of light to moderate alcohol consumption against cardiovascular disease is well recognized, with the further hypothesis that red wine offers extra cardiovascular protection due to its rich content of antioxidant phenolic compounds. Although this hypothesis is given some credence from in vitro data, controlled studies in humans have produced conflicting results. Clearly, the equally well described pro-oxidant effects of alcohol and its metabolism have been insufficiently considered in the pursuit of what to many is an intuitively attractive hypothesis. Further studies are required to determine if red wine phenolics are actually absorbed from the gut and whether they offer any overall antioxidant protection in vivo. The hypothesis that red wine offers extra cardiovascular protection compared to other alcoholic beverages is not proven and must await the outcome of studies in which the full spectrum of the pro-oxidant and antioxidant effects of alcoholic beverages are duly considered. In the absence of such studies, there are no grounds at present for the promotion of the consumption of alcoholic beverages on the basis of their putative "antioxidant" properties.
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