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Ahotupa M. Lipid Oxidation Products and the Risk of Cardiovascular Diseases: Role of Lipoprotein Transport. Antioxidants (Basel) 2024; 13:512. [PMID: 38790617 PMCID: PMC11117553 DOI: 10.3390/antiox13050512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 04/02/2024] [Accepted: 04/23/2024] [Indexed: 05/26/2024] Open
Abstract
Cholesterol has for decades ruled the history of atherosclerotic cardiovascular diseases (CVDs), and the present view of the etiology of the disease is based on the transport of cholesterol by plasma lipoproteins. The new knowledge of the lipoprotein-specific transport of lipid oxidation products (LOPs) has introduced another direction to the research of CVD, revealing strong associations between lipoprotein transport functions, atherogenic LOP, and CVD. The aim of this review is to present the evidence of the lipoprotein-specific transport of LOP and to evaluate the potential consequences of the proposed role of the LOP transport as a risk factor. The associations of cholesterol and lipoprotein LOP with the known risk factors of CVD are mostly parallel, and because of the common transport and cellular intake mechanisms it is difficult to ascertain the independent effects of either cholesterol or LOP. While cholesterol is known to have important physiological functions, LOPs are merely regarded as metabolic residues and able to initiate and boost atherogenic processes. It is therefore likely that with the increased knowledge of the lipoprotein-specific transport of LOP, the role of cholesterol as a risk factor of CVD will be challenged.
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Affiliation(s)
- Markku Ahotupa
- Centre for Population Health Research, University of Turku and Turku University Hospital, 20520 Turku, Finland;
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, 20520 Turku, Finland
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Olluri A. Compared with What?-The Illusion of Olive Oil as "Heart-Healthy". J Nutr 2024; 154:1480-1481. [PMID: 38367808 DOI: 10.1016/j.tjnut.2024.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 02/09/2024] [Accepted: 02/14/2024] [Indexed: 02/19/2024] Open
Affiliation(s)
- Andi Olluri
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
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Samei M, Dowlatkhahi N, Boozari M, Hosseinzadeh H. Can daily consumption of enriched fatty acids diet be effective in improving metabolic syndrome? An attractive paradox for walnut kernel. Food Sci Nutr 2024; 12:2311-2333. [PMID: 38628188 PMCID: PMC11016402 DOI: 10.1002/fsn3.3972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 01/04/2024] [Accepted: 01/09/2024] [Indexed: 04/19/2024] Open
Abstract
Imagine consuming a daily diet rich in fatty acids to help treat diseases such as hypertension and obesity. This concept presents an attractive paradox. In particular, consuming walnut kernels is beneficial for treating diseases associated with metabolic syndrome (MetS), including type 2 diabetes, cardiovascular disease, dyslipidemia, and obesity. Different parts of the Juglans regia tree (family Juglandaceae), including its leaves, green husks, bark, and septum, have shown promising effects on pathological conditions related to MetS. The therapeutic advantages of consuming walnut kernels for MetS can be attributed to the presence of polyunsaturated fatty acids and polyphenolic compounds such as juglone and ellagic acid. Diets enriched with walnut kernel have a positive impact on MetS complications by reducing diastolic blood pressure, improving blood lipid profiles, lowering fasting blood sugar levels, and increasing insulin sensitivity. The potential cellular mechanisms responsible for these benefits involve activating the cholesterol hemostasis pathway by inhibiting sterol regulatory element-binding proteins (SREBPs), proprotein convertase subtilisin/kexin type 9 (PCSK9), and cholesteryl ester transfer protein (CETP). Furthermore, other by-products of walnuts, such as leaves and green husks, have also demonstrated effectiveness in managing MetS. These findings highlight the potential of incorporating walnut-based products into our diets as a natural approach to combating MetS and its complications.
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Affiliation(s)
- Melika Samei
- School of PharmacyMashhad University of Medical SciencesMashhadIran
| | | | - Motahareh Boozari
- Department of Pharmacognosy, School of PharmacyMashhad University of Medical SciencesMashhadIran
| | - Hossein Hosseinzadeh
- Department of Pharmacodynamics and Toxicology, School of PharmacyMashhad University of Medical SciencesMashhadIran
- Pharmaceutical Research Center, Pharmaceutical Technology InstituteMashhad University of Medical SciencesMashhadIran
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Khandouzi N, Zahedmehr A, Asadian S, Nasrollahzadeh J. Effects of olive oil and flaxseed consumption in a healthy diet on endothelial function, plasma lipids and inflammatory factors of patients with coronary heart disease: a randomized clinical trial. Coron Artery Dis 2023; 34:332-340. [PMID: 37335239 DOI: 10.1097/mca.0000000000001259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
OBJECTIVES A healthy lifestyle, including a healthy diet has been associated with an improvement in cardiovascular risk factors. The aim of the present study was to assess the effect of olive oil and flaxseed consumption as part of a healthy diet on endothelial function, plasma inflammatory factors, and lipid profile in patients with coronary heart disease (CHD). METHOD This randomized nonblinded trial was performed on CHD patients. In the control group, participants received general heart-healthy dietary recommendations while in the intervention group, in addition to these recommendations, the participants consumed 25 ml of olive oil and 30 g of flaxseeds daily for 3 months. At baseline and after 3 months, changes in brachial flow-mediated dilation (FMD), plasma asymmetric dimethyl arginine, interleukin-6 (IL-6), IL-10, high-sensitivity C-reactive protein (hs-CRP), tumor necrosis factor-α (TNF-α), monocyte chemoattractant protein-1 (MCP-1), and lipids and lipoproteins were measured. RESULTS A total of 50 patients finished the trial ( n = 24 in the intervention and n = 26 in the control groups). Compared to the control group, consumption of flaxseed and olive oil significantly improved brachial artery FMD%, and reduced plasma IL-6, TNF-α, MCP-1, total cholesterol, and tended to reduce hs-CRP, and non-HDL-cholesterol but the concentration of other study indices were not different between the two groups. CONCLUSION Inclusion of olive oil and flaxseed in the diet of CHD patients may contribute to secondary prevention by improving endothelial function and plasma inflammatory factors.
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Affiliation(s)
- Nafiseh Khandouzi
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences
| | | | - Sanaz Asadian
- Department of Radiology, Rajaie Cardiovascular, Medical & Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Javad Nasrollahzadeh
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences
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Adebayo A, Ademosun A, Adedayo B, Oboh G. Antioxidant-rich Terminalia catappa fruit exerts antihypertensive effect via modulation of angiotensin-1-converting enzyme activity and H 2S/NO/cGMP signaling pathway in Wistar rats. Biomarkers 2023:1-11. [PMID: 37002876 DOI: 10.1080/1354750x.2023.2198680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
Abstract
INTRODUCTION The present study aimed at investigating the effect of Terminalia catappa fruits on blood pressure, NO/cGMP signalling pathway, angiotensin-1-converting enzyme and arginase activity, and oxidative stress biomarkers in L-NAME-induced hypertensive rats. MATERIALS AND METHODS Forty-two Wistar rats were divided into seven groups. Hypertension was induced via oral administration of 40 mg/kg of L-NAME for 21 days. Thereafter, the hypertensive rats were treated with Terminalia catappa fruit-supplemented diet and sildenafil citrate for 21 days. The blood pressure was measured and cardiac homogenate was prepared for biochemical analyses. RESULTS The results showed that L-NAME caused a significant (p < 0.05) increase in systolic and diastolic blood pressure, and heart rate as well as ACE, arginase and PDE-5 activity, with a simultaneous decrease in NO and H2S levels as well as increased oxidative stress biomarkers. However, treatment with Terminalia catappa fruits-supplemented diets and sildenafil citrate lowered blood pressure and modulated ACE, arginase, and PDE-5 activity, improved NO and H2S levels, as well as antioxidant status. CONCLUSION Findings presented in this study provide useful information on the antihypertensive property of Terminalia catappa fruits, alongside some possible mechanisms. Hence, Terminalia catappa fruits could be considered a dietary regimen and functional food in alleviating hypertension.
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Affiliation(s)
- Adeniyi Adebayo
- Functional Foods and Nutraceutical Unit, Department of Biochemistry, Federal University of Technology, P.M.B. 704, Akure, Nigeria
- Biochemistry Unit, Department of Chemical Sciences, Joseph Ayo Babalola University, P.M.B. 5006, Ikeji Arakeji, Nigeria
| | - Ayokunle Ademosun
- Functional Foods and Nutraceutical Unit, Department of Biochemistry, Federal University of Technology, P.M.B. 704, Akure, Nigeria
| | - Bukola Adedayo
- Functional Foods and Nutraceutical Unit, Department of Biochemistry, Federal University of Technology, P.M.B. 704, Akure, Nigeria
| | - Ganiyu Oboh
- Functional Foods and Nutraceutical Unit, Department of Biochemistry, Federal University of Technology, P.M.B. 704, Akure, Nigeria
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Papagianni O, Voutsa A, Katira O, Potsaki P, Almpounioti K, Tzitziri K, Skalkos D, Koutelidakis AE. Postprandial Inflammatory and Metabolic Responses Induced by Authentic Mytilinis Cheese: A Preliminary, Crossover, Nutritional Intervention in Healthy Adults. Life (Basel) 2023; 13:life13040923. [PMID: 37109453 PMCID: PMC10141237 DOI: 10.3390/life13040923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/16/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023] Open
Abstract
Several Mediterranean traditional cheeses may present a beneficial effect on postprandial metabolic and inflammatory modulation due to the presence of bioactive components. The objective of the present preliminary nutritional intervention was the investigation of the postprandial metabolic responses after the intake of traditional Authentic Mytilinis cheese in olive oil with herbs, compared to the corresponding responses after consumption of Italian Parmesan cheese, in healthy participants. A pilot crossover, randomized, single-blinded, intervention clinical trial was conducted in 10 healthy men and women subjects, aged 18–30 years, after random allocation into the control and the intervention groups. The participants received a high-fat carbohydrate meal containing either Authentic Mytilinis cheese (the authentic nonrefrigerated recipe) or Italian Parmesan PDO cheese. After a washout week, the participants consumed the same meals conversely. Differences in the postprandial responses of glucose, triglycerides, uric acid and serum total, HDL and LDL cholesterol levels, as well as of the plasma total antioxidant capacity according to the FRAP method, were determined between groups for fasting, 30 min, 1.5 h, and 3 h after meal intake. The results suggested that meals did not significantly affect postprandial metabolic and inflammatory responses. However, Authentic L Mytilinis cheese resulted in a lower increase of LDL cholesterol (p > 0.05) and induced a significant decrease of serum triglycerides (p < 0.05) in the last 1.5 h after a meal, compared to Italian Parmesan cheese. Further investigation with large prospective studies is necessary to validate the current findings.
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Cogan B, Pearson RC, Paton CM, Jenkins NT, Cooper JA. Pecan-enriched diet improves cholesterol profiles and enhances postprandial microvascular reactivity in older adults. Nutr Res 2023; 111:44-58. [PMID: 36822079 DOI: 10.1016/j.nutres.2023.01.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 01/11/2023] [Accepted: 01/19/2023] [Indexed: 02/04/2023]
Abstract
Pecan-enriched diets have been linked to improved lipid metabolism; however, the impact of pecans on vascular health has yet to be examined. We hypothesized that 4 weeks of a pecan-enriched diet would improve fasting and postprandial blood lipids and vascular function compared with a nut-free diet. In this randomized control study, 44 older adults (59 ± 6 years) consumed 68 g of pecans/d (pecan; n = 21) or avoided all nuts (control; n = 23) for 4 weeks. At pre- and post-diet visits, fasting and postprandial blood lipids, macrovascular (by flow-mediated dilation), and microvascular (tissue saturation index reactive hyperemia [RH] kinetics by continuous-wave near-infrared spectroscopy) function were assessed. From the pre- to post-diet visit, there were greater reductions in fasting total cholesterol (pecan: -14 ± 4.0 vs control: -0.2 ± 5.4 mg/dL; P = .04), low-density lipoprotein (LDL) cholesterol (pecan: -15 ± 3.7 vs control: +1.9 ± 4.4 mg/dL; P = .01), non-high-density lipoprotein cholesterol (pecan: -15 ± 3.6 vs control: -0.5 ± 4.8 mg/dL; P = .02), LDL particle number (pecan: -126 ± 51 vs control: +43 ± 42 nmol/L; P = .01), and LDL medium (pecan: -34 ± 13 vs control: +16 ± 11 nmol/L; P < .01), for pecan vs control. Further, postprandial triglyceride was suppressed for pecan (P = .01) compared with control (P = .78). Postprandial RH slope (P = .04) and RH time to half (P = .004) was different by group, driven by improvements in pecan vs control. However, fasting macro- and microvascular function was unaffected. Daily pecan consumption for 4 weeks improved fasting and postprandial blood lipids and microvascular reactivity in older adults. Because changes in microvascular function typically precipitate macrovascular changes, long-term pecan consumption may improve vascular health and reduce risk for cardiovascular events. This trial was registered at clinicaltrials.gov (NCT04385537).
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Affiliation(s)
- Betsy Cogan
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA
| | - Regis C Pearson
- Department of Kinesiology, University of Georgia, Athens, GA, USA
| | - Chad M Paton
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA; Department of Food Science and Technology, University of Georgia, Athens, GA, USA
| | - Nathan T Jenkins
- Department of Kinesiology, University of Georgia, Athens, GA, USA
| | - Jamie A Cooper
- Department of Nutritional Sciences, University of Georgia, Athens, GA, USA.
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Wang R, Hannan MT, Wang M, Schwartz AW, Lopez-Garcia E, Grodstein F. Long-Term Consumption of Nuts (Including Peanuts, Peanut Butter, Walnuts, and Other Nuts) in Relation to Risk of Frailty in Older Women: Evidence from a Cohort Study. J Nutr 2023; 153:820-827. [PMID: 36931754 PMCID: PMC10196568 DOI: 10.1016/j.tjnut.2023.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/23/2022] [Accepted: 01/03/2023] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Adherence to a healthy diet is inversely associated with frailty. However, the relationship between nuts, a key food group of Mediterranean diet, and frailty is unclear. OBJECTIVES This study aimed to evaluate the association between nut consumption and frailty in an aging female population. METHODS This population-based observational study included nonfrail women (≥60 y old) in the NHS from 11 states of the United States. Outcome was incident frailty, defined as having ≥3 of the FRAIL components (fatigue, lower strength, reduced aerobic capacity, multiple chronic conditions, and significant weight loss) and assessed every 4 y from 1992 to 2016. From 1990 to 2014, FFQs were used to assess the intakes of peanuts, peanut butter, walnuts (added in 1998), and other nuts at 4-y intervals. Exposure was total nut consumption, calculated as the sum of intakes of peanuts, peanut butter, walnuts, and other nuts and categorized into <1 serving/mo, 1-3 servings/mo, 1 serving/wk, 2-4 servings/wk, and ≥5 servings/wk. The relations of intakes of peanuts, peanut butter, and walnuts with frailty were also investigated separately. Cox proportional hazards models were used to assess the associations between nut consumption and frailty after adjusting for age, smoking, BMI, EI, diet quality, and medication use. RESULTS Among 71,704 participants, 14,195 incident frailty cases occurred over 1,165,290 person-years. The adjusted HR (95% CI) for consuming ≥5 servings/wk of nuts was 0.80 (0.73, 0.87), as compared with <1 serving/mo. Higher intakes of peanuts and walnuts, but not peanut butter, were also inversely associated with frailty. CONCLUSIONS This large prospective cohort study showed a strong and consistent inverse association between regular nut consumption and incident frailty. This suggests that nut consumption should be further tested as a convenient public health intervention for the preservation of health and well-being in older adults.
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Affiliation(s)
- Ruibin Wang
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, USA.
| | - Marian T Hannan
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, USA; Hinda and Arthur Marcus Institute for Aging Research, Boston, MA, USA
| | - Molin Wang
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, USA; Department of Biostatistics, Harvard T.H. Chan School of Public Health, MA, USA; Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Andrea W Schwartz
- Department of Epidemiology, Harvard T. H. Chan School of Public Health, Boston, MA, USA; New England Geriatrics Research Education and Clinical Center, Veterans Affairs Boston Healthcare System, Boston, MA, USA; Division of Aging, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Department of Medicine, Boston, MA, USA
| | - Esther Lopez-Garcia
- Department of Preventive Medicine and Public Health, Universidad Autónoma de Madrid, Madrid, Spain; CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain; IMDEA Food Institute. CEI UAM + CSIC, Madrid, Spain
| | - Francine Grodstein
- Rush Alzheimer Disease Center, Rush University Medical Center, Chicago, IL, USA
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Effects of anti-inflammatory dietary patterns on non-alcoholic fatty liver disease: a systematic literature review. Eur J Nutr 2023; 62:1563-1578. [PMID: 36690886 DOI: 10.1007/s00394-023-03085-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 01/03/2023] [Indexed: 01/25/2023]
Abstract
PURPOSE Non-alcoholic fatty liver disease (NAFLD) is the leading chronic hepatic condition. Low-grade chronic inflammation contributes to disease progression. Diet has protective effects on hepatic health and inflammatory pathways. The purpose of this review is to systematically review and describe the effects of anti-inflammatory dietary patterns on NAFLD. METHODS The Cochrane CENTRAL Library, Cumulative Index of Nursing and Allied Health Literature, Embase, MEDLINE and Web of Science databases were searched. A total of 252 records were identified, 7 of which were included in this review. The revised Cochrane risk-of-bias tool was used to conduct a quality assessment for randomised trials. Certainty of evidence was assessed using the grading of recommendations, assessment, development, and evaluation tool. RESULTS Of the 7 included studies, 6 were classified as low risk of bias and studies ranged from high to very low certainty of evidence. In the randomised-controlled studies systematically reviewed, either adherence to the Mediterranean, DASH, or FLiO diet was studied, against usual care or energy matched controls, with a total of 255 participants. Anti-inflammatory dietary pattern adherence significantly reduced the severity of most hepatic and inflammatory markers, and secondary outcomes. A minority of outcomes were improved significantly more than controls. CONCLUSION Anti-inflammatory dietary patterns showed benefits to NAFLD risk factors, severity markers and inflammatory markers compared to the control diet. It is unclear whether reductions in the evaluated parameters are related solely to the anti-inflammatory diet or weight loss resulting from caloric restriction, as improvements in control groups were also evidenced. Current limited body of evidence indicates need for further research including isocaloric dietary patterns, longer interventions, measures of inflammatory markers, and studies including normal-weight subjects to confirm findings at higher certainty. PROSPERO REGISTRATION CRD42021269382.
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Song H, Cong Z, Wang C, He M, Liu C, Gao P. Research progress on Walnut oil: Bioactive compounds, health benefits, extraction methods, and medicinal uses. J Food Biochem 2022; 46:e14504. [PMID: 36369998 DOI: 10.1111/jfbc.14504] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 10/21/2022] [Accepted: 10/25/2022] [Indexed: 11/13/2022]
Abstract
Walnut oil is extracted from walnut kernels (Juglans regia Linne) or iron walnut kernels (Juhlans sigillata Dode). The percentage of oil in walnuts is 52%-70%. The main constituents in oil are fatty acids, phenols, sterols, squalene, melatonin, vitamins, and minerals. Many extraction methods such as supercritical carbon dioxide extraction, maceration, modified "bligh and dyer extraction," aqueous enzymatic extraction, ultrasonic extraction, soxhlet extraction, and cold-press extraction methods are reported in the literature. Walnut oil showed anti-inflammatory, antitumor, antioxidant, immunomodulatory, neuroprotective, cardioprotective, antidiabetic, and antihyperlipidemic activities. The reported data in the literature suggest that walnut oil has many health benefits. This review summarizes the extraction methods, bioactive constituents, health benefits, and pharmacological actions of walnut oil. PRACTICAL APPLICATIONS: Walnut oil is a natural vegetable oil of significant importance due to their nutritional, and intelligence-boosting benefits. Several factors, including the processing parameters and the phytochemical profile, affect walnut oil products' flavor and color. In addition, storage environment of walnut oil can also affect walnut oil quality. Apart from the predominant ingredient fatty acids, the chemical composition of walnut oil comprises phenols, sterols, squalene, melatonin, vitamins, and minerals. These bioactive compounds are of potential value owing to their health-promoting benefits, including antioxidant, antitumor, and cholesterol-lowering effects. Many chemical constituents were isolated from walnut oil; however, all the compounds are not explored for their possible medicinal value. Thus, clinical studies, exploration of the therapeutic potential and the molecular mechanisms of all the compounds, and development of convenient dosage forms either for therapeutic or functional food purposes are warranted.
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Affiliation(s)
- Huaying Song
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Zhufeng Cong
- Shandong Institute of Cancer Prevention and Treatment, Jinan, China
| | - Changlin Wang
- College of Traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Mengyuan He
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Congying Liu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Peng Gao
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, China
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Fewkes JJ, Kellow NJ, Cowan SF, Williamson G, Dordevic AL. A single, high-fat meal adversely affects postprandial endothelial function: a systematic review and meta-analysis. Am J Clin Nutr 2022; 116:699-729. [PMID: 35665799 PMCID: PMC9437993 DOI: 10.1093/ajcn/nqac153] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 05/29/2022] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Endothelial dysfunction is a predictive risk factor for the development of atherosclerosis and is assessed by flow-mediated dilation (FMD). Although it is known that NO-dependent endothelial dysfunction occurs after consuming a high-fat meal, the magnitude of the effect and the factors that affect the response are unquantified. OBJECTIVES We conducted a systematic review and meta-analysis exploring the quantitative effects of a single high-fat meal on endothelial function and determined the factors that modify the FMD response. METHODS Six databases were systematically searched for original research published up to January 2022. Eligible studies measured fasting and postprandial FMD following consumption of a high-fat meal. Meta-regression was used to analyze the effect of moderator variables. RESULTS There were 131 studies included, of which 90 were suitable for quantitative meta-analysis. A high-fat meal challenge transiently caused endothelial dysfunction, decreasing postprandial FMD at 2 hours [-1.02 percentage points (pp); 95% CI: -1.34 to -0.70 pp; P < 0.01; I2 = 93.3%], 3 hours [-1.04 pp; 95% CI: -1.48 to -0.59 pp; P < 0.001; I2 = 84.5%], and 4 hours [-1.19 pp; 95% CI: -1.53 to -0.84 pp; P < 0.01; I2 = 94.6%]. Younger, healthy-weight participants exhibited a greater postprandial reduction in the FMD percentage change than older, heavier, at-risk groups after a high-fat meal ( P < 0.05). The percentage of fat in the meals was inversely associated with the magnitude of postprandial changes in FMD at 3 hours (P < 0.01). CONCLUSIONS A single, high-fat meal adversely impacts endothelial function, with the magnitude of the impact on postprandial FMD moderated by the fasting FMD, participant age, BMI, and fat content of the meal. Recommendations are made to standardize the design of future postprandial FMD studies and optimize interpretation of results, as high-fat meals are commonly used in clinical studies as a challenge to assess endothelial function and therapeutics. This trial was registered at PROSPERO as CRD42020187244.
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Affiliation(s)
- Juanita J Fewkes
- Department of Nutrition, Dietetics and Food, School of Clinical Sciences, Faculty of Medicine Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia,Victorian Heart Institute, Monash University, Clayton, Victoria, Australia
| | - Nicole J Kellow
- Department of Nutrition, Dietetics and Food, School of Clinical Sciences, Faculty of Medicine Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia,Centre for Innate Immunity and Infectious Diseases, Hudson Institute of Medical Research, Clayton, Victoria, Australia
| | - Stephanie F Cowan
- Department of Nutrition, Dietetics and Food, School of Clinical Sciences, Faculty of Medicine Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia
| | | | - Aimee L Dordevic
- Department of Nutrition, Dietetics and Food, School of Clinical Sciences, Faculty of Medicine Nursing and Health Sciences, Monash University, Clayton, Victoria, Australia,Victorian Heart Institute, Monash University, Clayton, Victoria, Australia
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Araujo GSM, Silva TOC, Guerra GM, Izaias JE, Rocha HMN, Faria D, Rocha NG, Dalmazo AL, Araujo A, Marciano Consolim-Colombo F, de Angelis K, Irigoyen MCC, Sales ARK. Effects of Postprandial Lipemia Combined With Disturbed Blood Flow on the Flow-Mediated Dilation, Oxidative Stress, and Endothelial Microvesicles in Healthy Subjects. Front Physiol 2022; 13:812942. [PMID: 35283771 PMCID: PMC8907728 DOI: 10.3389/fphys.2022.812942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/14/2022] [Indexed: 11/13/2022] Open
Abstract
Aims Both postprandial lipemia (PPL) and disturbed blood flow (DBF) induce endothelial dysfunction. However, the interactive effect of these stimuli on endothelial function is currently unknown. In the present study, we tested whether PPL plus DBF causes a greater reduction in flow-mediated dilation (FMD) than PPL and if this response is associated with elevations in oxidative stress and endothelial microvesicles (EMVs). Methods Eighteen individuals (aged 28 ± 1yrs, 3 females, and BMI 24.43 ± 0.8kg/m2) randomly underwent two experimental sessions: PPL and PPL plus DBF. FMD and venous blood samples were obtained at baseline and 30, 70, and 110 min after stimulation. PPL was induced by fat overload via mozzarella pizza ingestion and DBF by forearm cuff inflation to 75 mm Hg per 30 min. Lipidic profile, oxidative stress (thiobarbituric acid reactive substances, TBARS; ferric reducing/antioxidant power, FRAP; hydrogen peroxide, H2O2) and EMVs were measured in blood samples. Results Hypertriglyceridemia was observed in both sessions. Retrograde shear rate and oscillatory index responses were significantly higher in the PPL plus DBF compared with PPL. PPL plus DBF evoked a greater reduction in FMD than did PPL and EMVs, NADPH oxidase, and H2O2 similarly increased in both sessions, but TBARS and FRAP did not change. Conclusion These data indicate that the association of PPL plus DBF additively impairs endothelium-dependent function in 110 min after stimulus in healthy individuals, despite a similar increase in oxidative stress and EMVs. Further studies are needed to understand the mechanisms associated with the induced-endothelial dysfunction by association of PPL and DBF.
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Affiliation(s)
- Gustavo S. M. Araujo
- Heart Institute, University of São Paulo Medical School, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Thiago O. C. Silva
- Heart Institute, University of São Paulo Medical School, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Grazia M. Guerra
- Heart Institute, University of São Paulo Medical School, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil
| | - João E. Izaias
- D’OR Institute for Research and Education, São Paulo, Brazil
| | - Helena M. N. Rocha
- Department of Physiology and Pharmacology, Fluminense Federal University, Niterói, Brazil
| | - Diego Faria
- D’OR Institute for Research and Education, São Paulo, Brazil
| | - Natalia G. Rocha
- Department of Physiology and Pharmacology, Fluminense Federal University, Niterói, Brazil
| | - Aline Lopes Dalmazo
- Cardiology Institute of Rio Grande do Sul/Cardiology University Foundation (IC-FUC), Porto Alegre, Brazil
| | - Amanda Araujo
- Department of Physiology, Federal University of São Paulo, São Paulo, Brazil
| | | | - Katia de Angelis
- Department of Physiology, Federal University of São Paulo, São Paulo, Brazil
| | - Maria C. C. Irigoyen
- Heart Institute, University of São Paulo Medical School, Universidade Nove de Julho (UNINOVE), São Paulo, Brazil
| | - Allan R. K. Sales
- D’OR Institute for Research and Education, São Paulo, Brazil
- *Correspondence: Allan R. K. Sales,
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Akcan B, Örem A, Altinkaynak Y, Kural B, Örem C, Sönmez M, Serafini M. Endothelial Progenitor Cell Levels and Extent of Post-prandial Lipemic Response. Front Nutr 2022; 9:822131. [PMID: 35237643 PMCID: PMC8885282 DOI: 10.3389/fnut.2022.822131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/07/2022] [Indexed: 12/31/2022] Open
Abstract
Background and ObjectiveDue to the frequency of meal ingestion, individuals spend the majority of the day, ~18 h, in a status of post-prandial (PP) stress. Remnant-like lipoprotein particles (RLPs) are predominant in PP phase playing an important role in the development of atherosclerosis. Endothelial progenitor cells (EPCs) have been suggested to play a role in vessel wall homeostasis and in reducing atherosclerosis. However, there is no information about peripheral blood EPCs number following PP stress. We investigated the association between circulating EPCs levels and extent of PP lipemia in healthy subjects following a high-fat meal.Materials and MethodsA total of 84 healthy subjects (42 men, 42 women) aged 17–55 years were included in the study. PP lipemic response of subjects was determined by Oral Fat-Loading Test (OFLT). All the subjects were classified on the basis of their plasma TG levels after PP lipemic stressors in categories 1 (low), 2 (moderate), and 3 (high). Circulating EPCs numbers were measured by the flow cytometry method.ResultsThere was a significant difference in terms of lipid parameters between men and women: high-density lipoprotein cholesterol (HDL-C) was significantly lower in men than in women (p < 0.001). Total cholesterol (TC) (p = 0.004), low-density lipoprotein cholesterol (LDL-C) (p < 0.001), triglyceride (TG) (p < 0.001), and TG-AUC (p < 0.001) were significantly higher in men than in women. There was no significant difference between the genders in terms of CD34+KDR+ and CD34+KDR+CD133+cell number and MMP-9 levels. Vascular endothelial growth factor (VEGF) levels were significantly higher in men than women (p = 0.004). TC, LDL-C, and TG were significantly higher in the 3rd category than 1st and 2nd categories (p < 0.001) in women. Age, body mass index (BMI), fat rate, TG, TC, and LDL-C were significantly higher in the 3rd category than 1st category (p < 0.001, p = 0.002, p = 0.002, p = 0.01, p = 0.007, p = 0.004; respectively), in men. Circulating numbers of EPCs in men were significantly higher in the PP hyperlipidemia group than in the low TG levels category, independently from age (p < 0.05). Circulating EPC levels showed a positive correlation with OFLT response in men (r = 0.414, p < 0.05). Also, OFLT response showed a strong positive correlation with fasting TG levels (r = 0.930, p < 0.001). EPC levels in categories of women were not different.ConclusionIncreased EPCs levels in subjects with different PP hyperlipidemia may be associated with a response to endothelial injury, related to increased atherogenic remnant particles at the PP phase.
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Companys J, Calderón-Pérez L, Pla-Pagà L, Llauradó E, Sandoval-Ramirez BA, Gosalbes MJ, Arregui A, Barandiaran M, Caimari A, del Bas JM, Arola L, Valls RM, Solà R, Pedret A. Effects of enriched seafood sticks (heat-inactivated B. animalis subsp. lactis CECT 8145, inulin, omega-3) on cardiometabolic risk factors and gut microbiota in abdominally obese subjects: randomized controlled trial. Eur J Nutr 2022; 61:3597-3611. [PMID: 35643872 PMCID: PMC9464132 DOI: 10.1007/s00394-022-02904-0] [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: 01/10/2022] [Accepted: 05/05/2022] [Indexed: 11/25/2022]
Abstract
PURPOSE To assess the effects of enriched seafood sticks with postbiotic and bioactive compounds on CMD risk factors and the gut microbiota in abdominally obese individuals. METHODS Randomized, double-blind, parallel, placebo-controlled trial with abdominally obese individuals. Participants (n = 120) consumed 50 g/day of enriched seafood sticks containing SIAP: (1010 colony forming units (CFUs) of heat-inactivated B. animalis subsp. lactis CECT8145, 370 mg/day omega 3 and 1.7 g/day inulin), or 50 g/day of placebo seafood sticks for 12 weeks. At 12 weeks, an acute single-dose study of 4 h was performed. RESULTS Sustained SIAP2 consumption significantly decreased the insulin by - 5.25 mg/dL and HOMA-IR (homeostatic Model Assessment of Insulin Resistance) by - 1.33. In women, SIAP2 consumption significantly decreased the pulse pressure (PP) by - 4.69 mmHg. Gut microbiota analysis showed a negative association between glycemic parameter reduction and Alistipes finegoldii and Ruminococcaceae, and between PP reduction and Prevotella 9-ASV0283 and Christensenellaceae. In the acute single dose-study 4-h, SIAP2 consumption produced a lower increase in the postprandial circulating triglyceride levels [23.9 (7.03) mg/dL (mean [standard error])] than the observed with placebo [49.0 (9.52)] mg/dL. CONCLUSION In abdominally obese individuals, enriched seafood sticks induce a potential protection against type 2 diabetes development by the reduction in the insulin and HOMA-IR; and in cardiovascular disease, in women, by the PP reduction. These effects are accompanied by partial changes in the gut microbiota composition. The enriched seafood sticks reduce the atherogenic triglyceride postprandial concentrations. Our results support the use of enriched seafood sticks as a complementary strategy in the management of CMD risk factors. REGISTRATION NUMBER OF CLINICAL TRIAL: ( www. CLINICALTRIALS gov ): NCT03630588 (August 15, 2018).
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Affiliation(s)
- Judit Companys
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Avinguda Universitat, 1, 43204 Reus, Spain ,Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain
| | - Lorena Calderón-Pérez
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Avinguda Universitat, 1, 43204 Reus, Spain ,Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain
| | - Laura Pla-Pagà
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Avinguda Universitat, 1, 43204 Reus, Spain ,Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain
| | - Elisabet Llauradó
- Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain
| | - Berner Andrée Sandoval-Ramirez
- Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain
| | - Maria José Gosalbes
- Fundación de la Investigación Sanitaria y Biomédica, Valencia, Spain ,CIBERESP, Madrid, Spain
| | - Ainara Arregui
- Angulas Aguinaga Research Center, Laskibar bailara, 5, 20271 Irura, Gipuzkoa Spain
| | - Maddi Barandiaran
- Angulas Aguinaga Research Center, Laskibar bailara, 5, 20271 Irura, Gipuzkoa Spain
| | - Antoni Caimari
- Centre Tecnològic de Catalunya, Biotechnology Area, Reus, Spain
| | - Josep Maria del Bas
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Avinguda Universitat, 1, 43204 Reus, Spain
| | - Lluís Arola
- Nutrigenomics Research Group, Faculty of Chemistry, Universitat Rovira i Virgili, Tarragona, Spain
| | - Rosa M. Valls
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Avinguda Universitat, 1, 43204 Reus, Spain ,Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain
| | - Rosa Solà
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Avinguda Universitat, 1, 43204, Reus, Spain. .,Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201, Reus, Spain. .,Hospital Universitari Sant Joan de Reus, Reus, Spain.
| | - Anna Pedret
- Eurecat, Centre Tecnològic de Catalunya, Unitat de Nutrició i Salut, Avinguda Universitat, 1, 43204 Reus, Spain ,Functional Nutrition, Oxidation, and Cardiovascular Diseases Group (NFOC-Salut), Facultat de Medicina i Ciències de la Salut, Universitat Rovira i Virgili, C/Sant Llorenç 21, 43201 Reus, Spain
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Cahoon D, Shertukde SP, Avendano EE, Tanprasertsuk J, Scott TM, Johnson EJ, Chung M, Nirmala N. Walnut intake, cognitive outcomes and risk factors: a systematic review and meta-analysis. Ann Med 2021; 53:971-997. [PMID: 34132152 PMCID: PMC8211141 DOI: 10.1080/07853890.2021.1925955] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/02/2021] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND Walnuts contain nutrients that are associated with improved cognitive health. To our knowledge, no review has systematically examined the effects of walnuts on cognitive function and risk for cognitive decline. OBJECTIVE To conduct a systematic review and meta-analysis evaluating the effects of walnut intake on cognition-related outcomes and risk-factors for cognitive decline in adults. METHODS Medline®, Commonwealth Agricultural Bureau, and Cochrane Central Register of Controlled Trials were searched for randomized controlled trials (RCTs) and observational studies published until April 2020 on walnut intake, cognition (e.g. cognitive function, stroke, and mood), and selected risk factors for cognitive decline (e.g. glucose homeostasis and inflammation). Risk-of-bias and strength-of-evidence assessments were conducted using standard validated tools. Random-effects meta-analyses were conducted when ≥3 studies reported quantitative data for each outcome. RESULTS 32 RCT and 7 observational study publications were included. Meta-analysis of cognition-related outcomes could not be conducted due to heterogeneity of tests. None of the 5 cognition RCTs found significant effects of walnuts on overall cognition, although 3 studies found improvements on subdomains and/or subgroups. All 7 observational studies found significant associations and a dose-response relationship between walnut intake and cognition-related outcomes. Meta-analyses of 27 RCTs reporting glucose homeostasis and inflammation outcomes, selected risk factors for cognitive decline, did not show significant effects of walnut intake. CONCLUSIONS Due to the non-uniformity of tests for cognition-related outcomes, definitive conclusions regarding the effect of walnut consumption on cognition could not be reached. Additionally, evidence does not show associations between walnut intake and glucose homeostasis or inflammation, cognitive decline risk-factors. High-quality studies with standardized measures are needed to clarify the role of walnuts in cognitive health.KEY MESSAGESThis is a systematic review and meta-analysis of 5 randomized clinical trials and 7 observational study articles of the impact of walnut intake on cognition decline and 27 randomized clinical trials of the effect of walnut intake on risk factors for cognitive decline including glucose homeostasis and inflammation.The non-uniformity of tests performed to measure cognitive function in the various studies did not allow for a meta-analysis of these studies. A definitive conclusion could therefore not be reached regarding the effect of walnut intake on cognitive decline.The evidence available does not show an association between walnut intake and glucose homeostasis or inflammation.
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Affiliation(s)
- Danielle Cahoon
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
| | - Shruti P. Shertukde
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
| | - Esther E. Avendano
- Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, MA, USA
| | - Jirayu Tanprasertsuk
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
| | - Tammy M. Scott
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
| | - Elizabeth J. Johnson
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
| | - Mei Chung
- Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA, USA
- Department of Public Health and Community Medicine, Tufts University School of Medicine, Boston, MA, USA
| | - Nanguneri Nirmala
- Center for Clinical Evidence Synthesis, Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Boston, MA , USA
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Samadi M, Khosravy T, Azadbakht L, Rezaei M, Mosafaghadir M, Kamari N, Bagheri A, Pasdar Y, Najafi F, Hamze B, Soleimani D. Major dietary patterns in relation to muscle strength status among middle-aged people: A cross-sectional study within the RaNCD cohort. Food Sci Nutr 2021; 9:6672-6682. [PMID: 34925797 PMCID: PMC8645754 DOI: 10.1002/fsn3.2617] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 09/13/2021] [Accepted: 09/19/2021] [Indexed: 11/15/2022] Open
Abstract
Grip strength in midlife can predict physical disability in senior years. Recent evidence shows the critical role of nutritional status on muscle function. We aimed to elucidate whether adherence to a particular dietary pattern would be associated with abnormal muscle strength among middle-aged people. In this cross-sectional study, a semiquantitative Food Frequency Questionnaire was used to assess the dietary intake of 2781 participants in the Ravansar Non-Communicable Chronic Disease (RaNCD) cohort. Major dietary patterns from 28 main food groups were extracted using principal component analysis. Binary logistic regression was used to determine the association between the tertiles of the major dietary patterns and muscle strength status. Two major dietary patterns were identified: the "mixed dietary pattern" that heavily loaded with fruits, vegetables, nuts, dairies, sweets, legumes, dried fruits, fish, red meat, butter, whole grains, natural juices, poultry, pickles, olive, industrial juice, egg, processed meat, and snacks and "unhealthy dietary pattern" that heavily loaded by fats, sugar, refined grains, soft drink, salt, organ meat, tea, and coffee. Adherence to the mixed dietary pattern (OR = 1.03, 95% CI = 0.8-1.33, P for trend = 0.77) and the unhealthy dietary pattern (OR = 1.01, 95% CI = 0.79-0.13, P for trend = 0.89) did not associate with abnormal muscle strength. This study suggests that the dietary pattern involving the consumption of healthy and unhealthy food does not have an effect on muscle strength in middle-aged adults.
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Affiliation(s)
- Mehnoosh Samadi
- Department of Nutritional SciencesSchool of Nutritional Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
- Department of Nutritional SciencesResearch Center for Environmental Determinants of Health (RCEDH)Health InstituteKermanshah University of Medical SciencesKermanshahIran
| | - Tina Khosravy
- Department of Health and NutritionLorestan University of Medical ScienceLorestanIran
| | - Leila Azadbakht
- Department of Community NutritionSchool of Nutritional Sciences and DieteticsTehran University of Medical SciencesTehranIran
| | - Mansour Rezaei
- Biostatistics and Epidemiology DepartmentSchool of Public HealthKermanshah University of Medical SciencesKermanshahIran
| | - Mohammad Mosafaghadir
- Department of Nutritional SciencesSchool of Nutritional Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
| | - Negin Kamari
- Department of Nutritional SciencesSchool of Nutritional Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
| | - Amir Bagheri
- Department of Nutritional SciencesResearch Center for Environmental Determinants of Health (RCEDH)Health InstituteKermanshah University of Medical SciencesKermanshahIran
| | - Yahya Pasdar
- Department of Nutritional SciencesSchool of Nutritional Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
| | - Farid Najafi
- Department of EpidemiologyResearch Center for Environmental Determinants of Health (RCEDH)Health instituteKermanshah University of Medical SciencesKermanshahIran
| | - Behrouz Hamze
- Department of Public HealthKermanshah University of Medical SciencesKermanshahIran
| | - Davood Soleimani
- Department of Nutritional SciencesSchool of Nutritional Sciences and Food TechnologyKermanshah University of Medical SciencesKermanshahIran
- Research Center of Oils and FatsKermanshah University of Medical SciencesKermanshahIran
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Tomé-Carneiro J, Crespo MC, López de Las Hazas MC, Visioli F, Dávalos A. Olive oil consumption and its repercussions on lipid metabolism. Nutr Rev 2021; 78:952-968. [PMID: 32299100 DOI: 10.1093/nutrit/nuaa014] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Consumption of highly processed foods, such as those high in trans fats and free sugars, coupled with sedentarism and chronic stress increases the risk of obesity and cardiometabolic disorders, while adherence to a Mediterranean diet is inversely associated with the prevalence of such diseases. Olive oil is the main source of fat in the Mediterranean diet. Data accumulated thus far show consumption of extra virgin, (poly)phenol-rich olive oil to be associated with specific health benefits. Of note, recommendations for consumption based on health claims refer to the phenolic content of extra virgin olive oil as beneficial. However, even though foods rich in monounsaturated fatty acids, such as olive oil, are healthier than foods rich in saturated and trans fats, their inordinate use can lead to adverse effects on health. The aim of this review was to summarize the data on olive oil consumption worldwide and to critically examine the literature on the potential adverse effects of olive oil and its main components, particularly any effects on lipid metabolism. As demonstrated by substantial evidence, extra virgin olive oil is healthful and should be preferentially used within the context of a balanced diet, but excessive consumption may lead to adverse consequences.
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Affiliation(s)
- João Tomé-Carneiro
- Laboratory of Functional Foods, Madrid Institute for Advanced Studies (IMDEA)-Food, Campus of International Excellence UAM + CSIC, Madrid, Spain
| | - María Carmen Crespo
- Laboratory of Functional Foods, Madrid Institute for Advanced Studies (IMDEA)-Food, Campus of International Excellence UAM + CSIC, Madrid, Spain
| | - María Carmen López de Las Hazas
- Laboratory of Epigenetics of Lipid Metabolism, Madrid Institute for Advanced Studies (IMDEA)-Food, Campus of International Excellence UAM + CSIC, Madrid, Spain
| | - Francesco Visioli
- Laboratory of Functional Foods, Madrid Institute for Advanced Studies (IMDEA)-Food, Campus of International Excellence UAM + CSIC, Madrid, Spain.,Department of Molecular Medicine, University of Padova, Padova, Italy
| | - Alberto Dávalos
- Laboratory of Epigenetics of Lipid Metabolism, Madrid Institute for Advanced Studies (IMDEA)-Food, Campus of International Excellence UAM + CSIC, Madrid, Spain
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18
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Rathnayake KM, Weech M, Lovegrove JA, Jackson KG. Glu298Asp (rs1799983) Polymorphism Influences Postprandial Vascular Reactivity and the Insulin Response to Meals of Varying Fat Composition in Postmenopausal Women: Findings from the Randomized, Controlled Dietary Intervention and VAScular function (DIVAS)-2 Study. J Nutr 2021; 151:848-856. [PMID: 33693945 DOI: 10.1093/jn/nxaa394] [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] [Received: 06/08/2020] [Revised: 07/20/2020] [Accepted: 11/16/2020] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Previous acute studies suggest the Glu298Asp polymorphism (rs1799983) may influence vascular reactivity in response to long-chain n-3 PUFA intake. However, the effects of this genotype on postprandial vascular function after meals rich in SFAs, n-6 PUFAs, and MUFAs are unclear. OBJECTIVES This study determined the impact of the Glu298Asp polymorphism on changes in vascular function and cardiometabolic risk biomarkers in response to sequential meals of varying fat composition. METHODS In a randomized, double-blind, crossover, acute study, 32 postmenopausal women (mean ± SD age: 58 ± 5 y; BMI: 25.9 ± 4.1 kg/m2) consumed mixed meals (breakfast: 0 min, 50 g fat; lunch: 330 min, 30 g fat) containing SFAs, n-6 PUFAs, or MUFAs on 3 occasions. Blood samples for cardiometabolic disease risk markers and real-time measures of vascular reactivity [including flow-mediated dilatation (FMD; primary outcome)] were collected/performed before and regularly for 480 min after breakfast. Participants were retrospectively genotyped for the Glu298Asp (rs1799983) polymorphism. Data were analyzed using linear mixed models. RESULTS For the postprandial %FMD response, a test fat × genotype interaction was observed for the AUC (P = 0.019) but not incremental AUC (IAUC), with the AUC being ∼24% greater after MUFA- than after SFA- and n-6 PUFA-rich meals in the Glu298 homozygotes (P ≤ 0.026). Test fat × genotype interactions were also evident for postprandial insulin (P ≤ 0.005), with the MUFA-rich meals demonstrating significantly higher AUC (12.8%/14.9%), IAUC (14.6%/20.0%), and maximum concentration (20.0%/34.5%) than the SFA- and n-6 PUFA-rich meals, respectively, in Asp298 carriers (P < 0.05). Genotype did not influence other study outcome measures in response to the test fats. CONCLUSIONS Our findings suggest the Glu298Asp polymorphism may represent a potential determinant of the inter-individual variability in postprandial responsiveness of %FMD and insulin to acute meal fat composition in postmenopausal women. Further studies are required to confirm these observations.This trial was registered at clinicaltrials.gov as NCT02144454.
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Affiliation(s)
- Kumari M Rathnayake
- Hugh Sinclair Unit of Human Nutrition, Institute for Food, Nutrition and Health and Institute for Cardiovascular and Metabolic Research, Department of Food & Nutritional Sciences, University of Reading, Whiteknights, Reading, United Kingdom.,Department of Applied Nutrition, Faculty of Livestock, Fisheries and Nutrition, Wayamba University of Sri Lanka, Makandura, Sri Lanka
| | - Michelle Weech
- Hugh Sinclair Unit of Human Nutrition, Institute for Food, Nutrition and Health and Institute for Cardiovascular and Metabolic Research, Department of Food & Nutritional Sciences, University of Reading, Whiteknights, Reading, United Kingdom
| | - Julie A Lovegrove
- Hugh Sinclair Unit of Human Nutrition, Institute for Food, Nutrition and Health and Institute for Cardiovascular and Metabolic Research, Department of Food & Nutritional Sciences, University of Reading, Whiteknights, Reading, United Kingdom
| | - Kim G Jackson
- Hugh Sinclair Unit of Human Nutrition, Institute for Food, Nutrition and Health and Institute for Cardiovascular and Metabolic Research, Department of Food & Nutritional Sciences, University of Reading, Whiteknights, Reading, United Kingdom
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Decreased Efficiency of Very-Low-Density Lipoprotein Lipolysis Is Linked to Both Hypertriglyceridemia and Hypercholesterolemia, but It Can Be Counteracted by High-Density Lipoprotein. Nutrients 2021; 13:nu13041224. [PMID: 33917704 PMCID: PMC8068045 DOI: 10.3390/nu13041224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/31/2021] [Accepted: 04/06/2021] [Indexed: 12/16/2022] Open
Abstract
Impaired triglyceride-rich lipoprotein plasma catabolism is considered the most important factor for hypertriglyceridemia development. The aim of this study was to evaluate the impact of hypercholesterolemia and hypertriglyceridemia on the efficiency of lipoprotein lipase (LPL)-mediated very-low-density lipoprotein (VLDL)-triglyceride lipolysis and the role of high-density lipoprotein (HDL) in this process. Subjects with no history of cardiovascular disease (CVD) and untreated with lipid-lowering agents were recruited into the study and divided into normolipidemic, hypercholesterolemic, and hyperlipidemic groups. VLDL was isolated from serum and incubated with LPL in the absence or presence of HDL. For the hypercholesterolemic and hyperlipidemic groups, a significantly lower percentage of hydrolyzed VLDL-triglyceride was achieved compared to the normolipidemic group (p < 0.01). HDL enhanced the lipolysis efficiency in the hypercholesterolemic and hyperlipidemic groups on average by ~7% (p < 0.001). The lowest electrophoretic mobility of the VLDL remnants indicating the most effective lipolysis was obtained in the normolipidemic group (p < 0.05). HDL presence significantly reduced the electrophoretic mobility of the VLDL remnants for the hypercholesterolemic and hyperlipidemic groups (p < 0.05). The results of our study indicate that VLDL obtained from hypercholesterolemic and hyperlipidemic subjects are more resistant to lipolysis and are additional evidence of the need for early implementation of hypocholesterolemic treatment, already in asymptomatic CVD subjects.
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Moreno-Pérez B, Benito E, Civera M, Alabadi B, Martinez-Hervas S, Peiro M, González-Navarro H, Piqueras L, Sanz MJ, Ascaso JF, Real JT. Postprandial triglyceridaemia is modulated by insulin resistance but not by grade of obesity in abdominal and morbid obese subjects. Int J Clin Pract 2021; 75:e13776. [PMID: 33089594 DOI: 10.1111/ijcp.13776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 10/13/2020] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Obesity is associated with high cardiovascular risk. Postprandial lipidaemia has been associated with cardiovascular disease risk. Our aim was to identify whether anthropometric parameters, insulin resistance (IR) and/or fasting plasma triglycerides may determine postprandial changes in lipoprotein concentrations in abdominal and morbid obese subjects. METHODS We have studied 20 non-diabetic, normolipidaemic subjects with abdominal obesity, 20 morbid obese subjects and 20 healthy individuals, that have similar age and gender. In all of them a standardised oral fat load test (OFLT) with unsaturated fat was performed. RESULTS During the OFLT, the postprandial triglycerides response was significantly higher in subjects with abdominal obesity compared with morbid obese subjects (4 hours triglycerides pick value and AUC of triglycerides). Both obese groups showed significantly higher postprandial triglycerides response compared with healthy subjects. Dividing the obesity group according to the presence of IR, we found that IR was an important factor related with postprandial lipaemia but not BMI or waist circumference. In addition, postprandial glycaemia and insulinaemia significantly decreased in all studied subjects, being the highest decrease in morbid obese subjects and in subjects with IR. Postprandial triglyceridaemia significantly correlated with IR parameters and not with anthropometric parameters in AO and MO subjects. CONCLUSION In subjects with AO and MO, postprandial triglycerides values are higher than healthy individuals and independently predicted by fasting IR parameters. Furthermore, unsaturated fat improved IR state.
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Affiliation(s)
- Beatriz Moreno-Pérez
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
| | - Esther Benito
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Miguel Civera
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
- Department of Medicine, University of Valencia, Valencia, Spain
| | - Blanca Alabadi
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
| | - Sergio Martinez-Hervas
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
- Department of Medicine, University of Valencia, Valencia, Spain
| | - Marta Peiro
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
- Department of Medicine, University of Valencia, Valencia, Spain
| | - Herminia González-Navarro
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
- Department of Medicine, University of Valencia, Valencia, Spain
- Department of Didactics of Experimental and Social Sciences, University of Valencia, Valencia, Spain
| | - Laura Piqueras
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
- Department of Pharmacology, University of Valencia, Valencia, Spain
| | - Maria Jesús Sanz
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
- Department of Pharmacology, University of Valencia, Valencia, Spain
| | - Juan F Ascaso
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
- Department of Medicine, University of Valencia, Valencia, Spain
| | - Jose T Real
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain
- Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
- Department of Medicine, University of Valencia, Valencia, Spain
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21
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Effects of tree nut and groundnut consumption compared with those of l-arginine supplementation on fasting and postprandial flow-mediated vasodilation: Meta-analysis of human randomized controlled trials. Clin Nutr 2020; 40:1699-1710. [PMID: 32980186 DOI: 10.1016/j.clnu.2020.09.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 08/21/2020] [Accepted: 09/09/2020] [Indexed: 11/22/2022]
Abstract
INTRODUCTION l-arginine supplementation may improve vascular endothelial function. As tree nuts and groundnuts are a source of the amino acid l-arginine, we performed a meta-analysis of human randomized controlled trials (RCTs) to compare effects of tree nut and groundnut consumption with those of l-arginine supplementation on fasting and postprandial endothelial function as assessed by flow-mediated vasodilation of the brachial artery (FMD). METHODS Summary estimates of weighted mean differences (WMDs) in FMD and 95% confidence intervals (CIs) were calculated using random-effect meta-analyses. RESULTS A total of thirteen RCTs focusing on tree nut and groundnut consumption and nineteen RCTs investigating effects of l-arginine supplementation were included. Longer-term consumption of tree nuts and groundnuts increased fasting FMD by 1.09 %-point (PP) (95% CI: 0.49, 1.69, P < 0.001; I2: 76.7%, P < 0.001), while l-arginine supplementation (daily range: 3-21 g) increased fasting FMD by 0.53 PP (95% CI: 0.12, 0.93; P = 0.012; I2: 91.6%, P < 0.001). Effects between treatments were not statistically different (P = 0.31). Tree nut and groundnut consumption did not affect postprandial FMD responses (1.25 PP, 95% CI: -0.31, 2.81, P = 0.12; I2: 91.4%, P < 0.001), whereas l-arginine supplementation (range: 3-15 g) improved FMD during the postprandial phase by 2.02 PP (95% CI: 0.92, 3.13, P < 0.001; I2: 99.1%, P < 0.001). However, treatment effects did not differ significantly (P = 0.60). Overall, these results derive from high-quality evidence. CONCLUSION Longer-term consumption of tree nuts and groundnuts, as well as l-arginine supplementation did improve fasting endothelial function, as assessed by FMD. However, the positive effects of tree nuts and groundnuts could not be fully explained by the amount of l-arginine in these nuts. Only l-arginine supplementation did improve postprandial FMD, but effects were not different from those of tree nuts and groundnuts. Future studies should focus on the identifications of the bioactive nutrients in tree nuts and groundnuts and mechanistic pathways behind differences in postprandial and longer-term fasting changes in FMD.
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Milenkovic D, Paslawski R, Gomulkiewicz A, Gladine C, Janczak D, Grzegorek I, Jablonska K, Drozdz K, Chmielewska M, Piotrowska A, Janiszewski A, Dziegiel P, Mazur A, Paslawska U, Szuba A. Alterations of aorta intima and media transcriptome in swine fed high-fat diet over 1-year follow-up period and of the switch to normal diet. Nutr Metab Cardiovasc Dis 2020; 30:1201-1215. [PMID: 32482453 DOI: 10.1016/j.numecd.2020.04.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/02/2020] [Accepted: 04/07/2020] [Indexed: 01/18/2023]
Abstract
BACKGROUND AND AIM We previously showed that 12-month high-fat diet (HFD) in pigs led to fattening and increased artery intima-media-thickness, which were partly reversed after 3-month return to control diet (CD). The aim of this study was to decipher underlying mechanism of action by using transcriptomic analyses of intima and media of aorta. METHODS AND RESULTS Thirty-two pigs were divided into three groups: CD for 12 months; HFD for 12 months; switch diet group (regression diet; RD): HFD for 9 months followed by CD for 3 months. After 12 months, RNA was isolated from aorta intima and media for nutrigenomic analyses. HFD significantly affected gene expression in intima, while RD gene expression profile was distinct from the CD group. This suggests that switch to CD is not sufficient to correct gene expression alterations induced by HFD but counteracted expression of a group of genes. HFD also affected gene expression in media and as for intima, the expression profile of media of pigs on RD differed from that of these on CD. CONCLUSIONS This study revealed nutrigenomic modifications induced by long-term HFD consumption on arterial intima and media. The return to CD was not sufficient to counteract the genomic effect of HFD.
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Affiliation(s)
- D Milenkovic
- Université Clermont Auvergne, INRAE, UNH, CRNH Auvergne, F-63000, Clermont-Ferrand, France; Department of Internal Medicine, Division of Cardiovascular Medicine, School of Medicine, University of California Davis, Davis, CA 95616, United States.
| | - R Paslawski
- Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Wroclaw, Poland
| | - A Gomulkiewicz
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - C Gladine
- Université Clermont Auvergne, INRAE, UNH, CRNH Auvergne, F-63000, Clermont-Ferrand, France
| | - D Janczak
- Department of Vascular Surgery, Wroclaw Medical University, Wroclaw, Poland
| | - I Grzegorek
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - K Jablonska
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - K Drozdz
- Division of Angiology, Wroclaw Medical University, Wroclaw, Poland
| | - M Chmielewska
- Amphibian Biology Group, Department of Evolutionary Biology and Conservation of Vertebrates, University of Wroclaw, Poland
| | - A Piotrowska
- Division of Histology and Embryology, Department of Human Morphology and Embryology, Wroclaw Medical University, Wroclaw, Poland
| | - A Janiszewski
- Department of Internal Disease and Veterinary Diagnosis, Faculty of Veterinary Medicine and Animal Sciences, Poznan University of Life Sciences, Poland
| | - P Dziegiel
- Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Wroclaw, Poland
| | - A Mazur
- Université Clermont Auvergne, INRAE, UNH, CRNH Auvergne, F-63000, Clermont-Ferrand, France
| | - U Paslawska
- Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Wroclaw, Poland
| | - A Szuba
- Division of Angiology, Wroclaw Medical University, Wroclaw, Poland
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Wang QH, Fan K, Li DW, Han CM, Qu YY, Qi YK, Wu XQ. Identification, Virulence and Fungicide Sensitivity of Colletotrichum gloeosporioides s.s. Responsible for Walnut Anthracnose Disease in China. PLANT DISEASE 2020; 104:1358-1368. [PMID: 32196416 DOI: 10.1094/pdis-12-19-2569-re] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Walnut (Juglans regia L.) is an economically important woody nut and edible oil tree all over the world. However, walnut production is limited by walnut anthracnose, which is a disastrous disease that causes significant yield losses. Studying the etiology of anthracnose on walnut and the pathogens' virulence and sensitivities to fungicides would be beneficial for effective control. This study was conducted to identify the pathogen of walnut anthracnose and reveal the population diversity of pathogens through virulence, sensitivities to fungicides, and genetic variation. A total of 13 single-spore Colletotrichum isolates were collected from walnut anthracnose-diseased fruits and leaves from 13 walnut commercial orchards in Henan, Hubei, Shandong, and Shaanxi provinces in China. The isolates were identified as Colletotrichum gloeosporioides sensu stricto (s.s.) according to multilocus phylogenetic analyses (internal transcribed spacer, actin, glyceraldehyde-3-phosphate dehydrogenase, and chitin synthase), morphological as well as cultural characters, and pathogenicity. When the same walnut tissue was inoculated with different isolates, the disease lesion size was different. The results showed that the virulence of all isolates was considerably different, and the differences were not correlated with geographic origins. The virulence to walnut leaves and fruits inoculated with the same isolate was significantly different. Based on the virulence to walnut leaves and fruits, the 13 isolates were divided into three groups. Virulence of 69.2% of the isolates to walnut fruits was higher than that to leaves; 15.4% of isolates had no difference in pathogenicity, and the virulence to walnut leaves was higher for 15.4% of isolates. Tebuconazole, difenoconazole, flusilazole, and carbendazim inhibited the growth of fungal mycelia, and the concentration for 50% of maximal effect (EC50) values were 0.4 to 20.5, 0.6 to 2.6, 0.2 to 1.6, and 0.002 to 0.2 µg/ml, respectively, with average values of 6.5 ± 6.9, 1.5 ± 0.6, 0.9 ± 0.4, and 0.1 ± 0.05 µg/ml, respectively. All isolates were more sensitive to difenoconazole, flusilazole, and carbendazim than tebuconazole (P < 0.01). Isolate sensitivities to the same fungicide were different. Isolates SL-31 and TS-09 were the least sensitive to carbendazim and tebuconazole, respectively, and the resistance ratios were 87.3 and 51.6, respectively. Sensitivities to difenoconazole and flusilazole were largely consistent among all isolates, and the resistance ratios were from 1 to 4.6 and from 1 to 7, respectively. Therefore, difenoconazole and flusilazole could be chosen for disease control. The differences of pathogenicity and fungicide sensitivity were not correlated with geographic regions. These results indicated that there was high intraspecific diversity of populations in C. gloeosporioides s.s. that caused walnut anthracnose. For effective management, the targeted control strategy should be implemented based on the different geographic regions.
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Affiliation(s)
- Qing-Hai Wang
- Shandong Provincial Academy of Forestry, Jinan, Shandong 250014, China
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Kun Fan
- Shandong Institute of Pomology, Taian, Shandong 271000, China
| | - De-Wei Li
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
- The Connecticut Agricultural Experiment Station Valley Laboratory, Windsor, CT 06095, U.S.A
| | - Chuan-Ming Han
- Shandong Provincial Academy of Forestry, Jinan, Shandong 250014, China
| | - Yong-Yun Qu
- Shandong Provincial Academy of Forestry, Jinan, Shandong 250014, China
| | - Yu-Kun Qi
- Shandong Provincial Academy of Forestry, Jinan, Shandong 250014, China
| | - Xiao-Qin Wu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
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Ferri J, Navarro I, Alabadí B, Bosch-Sierra N, Benito E, Civera M, Ascaso JF, Martinez-Hervas S, Real JT. Gender differences on oxidative stress markers and complement component C3 plasma values after an oral unsaturated fat load test. CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS 2020; 32:87-93. [PMID: 32291193 DOI: 10.1016/j.arteri.2019.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 10/28/2019] [Accepted: 11/06/2019] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Post-prandial lipaemia (PL), oxidative stress (OS), and complement component C3 (C3) values are related to the atherosclerosis process. The post-prandial response of C3 after an oral fat load test (OFLT) using unsaturated fat is poorly addressed. The aim of this study was to analyze and compare the post-prandial response of OS markers and C3 values in men and women after an OFLT using unsaturated fat. METHODS The study included a total of 22 healthy subjects with normal lipids and normal blood glucose (11 men and 11 pre-menopausal women). An oral unsaturated fat load test (OFLT: 50g fat per m2 body surface) was performed using a commercial liquid preparation of long chain triglycerides (Supracal®). OS markers and C3 were measured using standardized methods at fasting state and every 2h up to 8h after the OFLT. RESULTS Men showed statistically significant higher C3, oxidized glutathione (GSSG), and oxidized-reduced glutathione (GSSG/GSH) ratio values at fasting state compared to that obtained in women. In addition, post-prandial C3 values and GSSG/GSH ratios were significantly higher in men compared to women. The GSSG value and GSSG/GSH ratio significantly decreased in men after the OFLT compared to fasting values. In contrast, the post-prandial OS markers decrease observed in women was not statistically significant. CONCLUSIONS In fasting state, men showed higher statistically significant C3 values and OS markers than women. The post-prandial OS markers (GSSG and GSSG/GSH ratio) significantly decrease after the OFLT with unsaturated fat in men compared to women.
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Affiliation(s)
- Jordi Ferri
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain; Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain; Department of Medicine, University of Valencia, Valencia, Spain
| | - Inmaculada Navarro
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain
| | - Blanca Alabadí
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain; Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain
| | - Neus Bosch-Sierra
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain
| | - Esther Benito
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain; Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Miguel Civera
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain; Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain; Department of Medicine, University of Valencia, Valencia, Spain
| | - Juan F Ascaso
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain; Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain; Department of Medicine, University of Valencia, Valencia, Spain
| | - Sergio Martinez-Hervas
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain; Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain; Department of Medicine, University of Valencia, Valencia, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain.
| | - Jose T Real
- Service of Endocrinology and Nutrition, Hospital Clínico Universitario de Valencia, Valencia, Spain; Institute of Health Research of the Hospital Clinico Universitario de Valencia (INCLIVA), Valencia, Spain; Department of Medicine, University of Valencia, Valencia, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
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Abstract
Culinary medicine is a new evidence-based field in medicine that blends the art of food and cooking with the science of medicine. Intended to be of constructive use to clinicians, patients, and families, this column covers 10 practical ways for eaters to enjoy preparing and choosing foods, meals, and beverages that work to prevent and treat disease and to enhance one's own natural ability to stay and get well. The column also identifies mechanisms by which food and beverages work in the body as culinary medicine. The column identifies what-to-look-for "chef's secrets" for choosing fruits and vegetables at the peak of flavor in your own garden, in supermarkets, and in farmer's markets. Edible flowers, herbs, and spices with special culinary medical value are also described, as are essential ways to choose and also, when necessary, avoid them. Finally, the corporate and professional office is described as an ideal site for nature-based stress reduction and burnout reversal, in which both culinary medicine and the power of nature can be used to reduce the symptoms associated with chronic stress.
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Comparison of metabolic and antioxidant responses to a breakfast meal with and without pecans. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.103559] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Rodrigues LL, Cooper JA, Paton CM. Acute consumption of Black walnuts increases fullness and decreases lipid peroxidation in humans. Nutr Res 2019; 71:56-64. [DOI: 10.1016/j.nutres.2019.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/22/2019] [Accepted: 09/04/2019] [Indexed: 01/08/2023]
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Metabolic and Vascular Effect of the Mediterranean Diet. Int J Mol Sci 2019; 20:ijms20194716. [PMID: 31547615 PMCID: PMC6801699 DOI: 10.3390/ijms20194716] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 09/18/2019] [Accepted: 09/21/2019] [Indexed: 12/17/2022] Open
Abstract
Several studies indicated how dietary patterns that were obtained from nutritional cluster analysis can predict disease risk or mortality. Low-grade chronic inflammation represents a background pathogenetic mechanism linking metabolic risk factors to increased risk of chronic degenerative diseases. A Mediterranean diet (MeDi) style has been reported as associated with a lower degree of inflammation biomarkers and with a protective role on cardiovascular and cerebrovascular events. There is heterogeneity in defining the MedDiet, and it can, owing to its complexity, be considered as an exposome with thousands of nutrients and phytochemicals. Recently, it has been reported a novel positive association between baseline plasma ceramide concentrations and cardiovascular events and how adherence to a Mediterranean Diet-style may influence the potential negative relationship between elevated plasma ceramide concentrations and cardiovascular diseases (CVD). Several randomized controlled trials (RCTs) showed the positive effects of the MeDi diet style on several cardiovascular risk factors, such as body mass index, waist circumference, blood lipids, blood pressure, inflammatory markers and adhesion molecules, and diabetes and how these advantages of the MeDi are maintained in comparison of a low-fat diet. Some studies reported a positive effect of adherence to a Mediterranean Diet and heart failure incidence, whereas some recent studies, such as the PREDIMED study, showed that the incidence of major cardiovascular events was lower among those assigned to MeDi supplemented with extra-virgin olive oil or nuts than among those assigned to a reduced-fat diet. New studies are needed to better understand the molecular mechanisms, whereby the MedDiet may exercise its effects. Here, we present recent advances in understanding the molecular basis of MedDiet effects, mainly focusing on cardiovascular diseases, but also discussing other related diseases. We review MedDiet composition and assessment as well as the latest advances in the genomic, epigenomic (DNA methylation, histone modifications, microRNAs, and other emerging regulators), transcriptomic (selected genes and whole transcriptome), and metabolomic and metagenomic aspects of the MedDiet effects (as a whole and for its most typical food components). We also present a review of the clinical effects of this dietary style underlying the biochemical and molecular effects of the Mediterranean diet. Our purpose is to review the main features of the Mediterranean diet in particular its benefits on human health, underling the anti-inflammatory, anti-oxidant and anti-atherosclerotic effects to which new knowledge about epigenetic and gut-microbiota relationship is recently added.
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Senoner T, Dichtl W. Oxidative Stress in Cardiovascular Diseases: Still a Therapeutic Target? Nutrients 2019; 11:E2090. [PMID: 31487802 PMCID: PMC6769522 DOI: 10.3390/nu11092090] [Citation(s) in RCA: 427] [Impact Index Per Article: 85.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/29/2019] [Accepted: 08/30/2019] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular diseases (CVD) are complex entities with heterogenous pathophysiologic mechanisms and increased oxidative stress has been viewed as one of the potential common etiologies. A fine balance between the presence of reactive oxygen species (ROS) and antioxidants is essential for the proper normal functioning of the cell. A basal concentration of ROS is indispensable for the manifestation of cellular functions, whereas excessive levels of ROS cause damage to cellular macromolecules such as DNA, lipids and proteins, eventually leading to necrosis and apoptotic cell death. CVD is the main cause of death worldwide with several conditions being affected by oxidative stress. Increased ROS lead to decreased nitric oxide availability and vasoconstriction, promoting arterial hypertension. ROS also negatively influence myocardial calcium handling, causing arrhythmia, and augment cardiac remodeling by inducing hypertrophic signaling and apoptosis. Finally, ROS have also been shown to promote atherosclerotic plaque formation. This review aims at giving an introduction into oxidative stress in CVD, with special focus on endothelial dysfunction, and then examining in detail the role of oxidative stress in the most prevalent of these diseases. Finally, potential nutraceuticals and diets that might be beneficial in diminishing the burden of oxidative stress in CVD are presented.
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Affiliation(s)
- Thomas Senoner
- Department of Internal Medicine III, Cardiology and Angiology, Innsbruck Medical University, Anichstraße 35, 6020 Innsbruck, Austria.
| | - Wolfgang Dichtl
- Department of Internal Medicine III, Cardiology and Angiology, Innsbruck Medical University, Anichstraße 35, 6020 Innsbruck, Austria.
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Du Y, Taylor CG, Zahradka P. Modulation of endothelial cell responses and vascular function by dietary fatty acids. Nutr Rev 2019; 77:614-629. [PMID: 31228246 DOI: 10.1093/nutrit/nuz026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2023] Open
Abstract
Healthy and functional endothelial cells play important roles in maintaining vascular homeostasis, whereas endothelial dysfunction initiates and exacerbates vascular disease progression. Interventional studies with dietary fatty acids have shown that these molecules have varying effects on vascular function. It is hypothesized that the actions of dietary fatty acids on vascular function may be mediated in part through endothelial cells. This review summarizes the results of studies that have examined the acute and chronic effects of dietary fatty acids on endothelial function and vascular properties in humans, as well as the potential mechanisms by which n-3 polyunsaturated fatty acids regulate endothelial function. Altogether, this article provides an extensive review of how fatty acids contribute to vascular function through their ability to modulate endothelial cells and discusses relationships between dietary fatty acids and endothelial cells in the context of vascular dysfunction.
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Affiliation(s)
- Youjia Du
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Albrechtsen Research Centre, Winnipeg, Manitoba, Canada
| | - Carla G Taylor
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Albrechtsen Research Centre, Winnipeg, Manitoba, Canada
| | - Peter Zahradka
- Department of Physiology and Pathophysiology, University of Manitoba, Winnipeg, Manitoba, Canada
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
- Canadian Centre for Agri-Food Research in Health and Medicine, St Boniface Albrechtsen Research Centre, Winnipeg, Manitoba, Canada
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The Postprandial Appearance of Features of Cardiometabolic Risk: Acute Induction and Prevention by Nutrients and Other Dietary Substances. Nutrients 2019; 11:nu11091963. [PMID: 31438565 PMCID: PMC6770341 DOI: 10.3390/nu11091963] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/18/2019] [Accepted: 08/19/2019] [Indexed: 12/11/2022] Open
Abstract
The purpose of this review is to provide an overview of diets, food, and food components that affect postprandial inflammation, endothelial function, and oxidative stress, which are related to cardiometabolic risk. A high-energy meal, rich in saturated fat and sugars, induces the transient appearance of a series of metabolic, signaling and physiological dysregulations or dysfunctions, including oxidative stress, low-grade inflammation, and endothelial dysfunction, which are directly related to the amplitude of postprandial plasma triglycerides and glucose. Low-grade inflammation and endothelial dysfunction are also known to cluster together with insulin resistance, a third risk factor for cardiovascular diseases (CVD) and type-II diabetes, thus making a considerable contribution to cardiometabolic risk. Because of the marked relevance of the postprandial model to nutritional pathophysiology, many studies have investigated whether adding various nutrients and other substances to such a challenge meal might mitigate the onset of these adverse effects. Some foods (e.g., nuts, berries, and citrus), nutrients (e.g., l-arginine), and other substances (various polyphenols) have been widely studied. Reports of favorable effects in the postprandial state have concerned plasma markers for systemic or vascular pro-inflammatory conditions, the activation of inflammatory pathways in plasma monocytes, vascular endothelial function (mostly assessed using physiological criteria), and postprandial oxidative stress. Although the literature is fragmented, this topic warrants further study using multiple endpoints and markers to investigate whether the interesting candidates identified might prevent or limit the postprandial appearance of critical features of cardiometabolic risk.
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Abbaspour N, Roberts T, Hooshmand S, Kern M, Hong MY. Mixed Nut Consumption May Improve Cardiovascular Disease Risk Factors in Overweight and Obese Adults. Nutrients 2019; 11:nu11071488. [PMID: 31261928 PMCID: PMC6683273 DOI: 10.3390/nu11071488] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 06/23/2019] [Accepted: 06/26/2019] [Indexed: 01/19/2023] Open
Abstract
Emerging research indicates that nuts are a source of health-promoting compounds demonstrating cardioprotective benefits. However, most studies have assessed the effect of single nuts rather than a nut mixture. The objective of this study was, therefore, to examine the effect of mixed-nut consumption on cardiovascular disease (CVD) risk factors in overweight and obese adults. In a randomized, parallel-arm, controlled trial, 48 participants consumed isocaloric (250 kcal) amounts of pretzels or mixed-nuts. Body weight (BW) (p = 0.024), BMI (p = 0.043), and insulin levels (p = 0.032) were significantly lower in the nut group compared to the pretzel group. Mixed-nut consumption also significantly reduced glucose (p = 0.04) and insulin (p = 0.032) levels after 4 and 8 weeks compared to baseline, respectively. Lactate dehydrogenase of the nut group was significantly lower than the pretzel group (p = 0.002). No significant differences were detected between groups for triglycerides, LDL-C, and HDL-C. However, pretzel consumption increased triglycerides (p = 0.048) from 4 weeks to 8 weeks. Moreover, LDL-C increased (p = 0.038) while HDL-C transiently decreased (p = 0.044) from baseline to 4 weeks. No significant lipid changes were detected within the nut group. Our results suggest that supplementing the diet with mixed-nuts could improve CVD risk factors by improving BW and glucose regulation in comparison to a common carbohydrate-rich snack without promoting the negative effects on lipids detected with pretzels.
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Affiliation(s)
- Nazanin Abbaspour
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182, USA
| | - Traci Roberts
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182, USA
| | - Shirin Hooshmand
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182, USA
| | - Mark Kern
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182, USA
| | - Mee Young Hong
- School of Exercise and Nutritional Sciences, San Diego State University, San Diego, CA 92182, USA.
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Postprandial Lipemic Responses to Various Sources of Saturated and Monounsaturated Fat in Adults. Nutrients 2019; 11:nu11051089. [PMID: 31100881 PMCID: PMC6567267 DOI: 10.3390/nu11051089] [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: 04/15/2019] [Revised: 05/10/2019] [Accepted: 05/12/2019] [Indexed: 01/08/2023] Open
Abstract
Background: Postprandial lipemia (PPL) is a cardiovascular disease risk factor. However, the effects of different fat sources on PPL remain unclear. We aimed to determine the postprandial response in triglycerides (TG) to four dietary fat sources in adults. Methods: Participants completed four randomized meal trials. For each meal trial, participants (n = 10; 5M/5F) consumed a high-fat meal (HFM) (13 kcal/kg; 61% of total kcal from fat) with the fat source derived from butter, coconut oil, olive oil, or canola oil. Blood was drawn hourly for 6 h post-meal to quantify PPL. Results: Two-way ANOVA of TG revealed a time effect (p < 0.0001), but no time–meal interaction (p = 0.56), or meal effect (p = 0.35). Meal trials did not differ with regard to TG total (p = 0.33) or incremental (p = 0.14) area-under-the-curve. When stratified by sex and the TG response was averaged across meals, two-way ANOVA revealed a time effect (p < 0.0001), time–group interaction (p = 0.0001), and group effect (p = 0.048), with men exhibiting a greater response than women, although this difference could be attributed to the pronounced difference in BMI between men and women within the sample. Conclusion: In our sample of young adults, postprandial TG responses to a single HFM comprised of different fat sources did not differ.
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ALTINKAYNAK Y, Örem A, Akcan Altınkaynak B, Kural B, Balaban Yücesan F, Örem C. Postprandial Lipemide Serum Paraoksonaz 1 (PON1) Aktivitelerinin İncelenmesi. ACTA MEDICA ALANYA 2019. [DOI: 10.30565/medalanya.455820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Borkowski K, Yim SJ, Holt RR, Hackman RM, Keen CL, Newman JW, Shearer GC. Walnuts change lipoprotein composition suppressing TNFα-stimulated cytokine production by diabetic adipocyte. J Nutr Biochem 2019; 68:51-58. [PMID: 31030167 DOI: 10.1016/j.jnutbio.2019.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 01/31/2019] [Accepted: 03/12/2019] [Indexed: 12/15/2022]
Abstract
Walnut consumption can provide both vascular and metabolic health benefits, and walnut-induced changes in lipoprotein particle chemical payloads may be responsible for these health benefits. To explore this possibility with a focus on metabolic health, this study investigated the impact of walnut consumption on lipoprotein lipid composition and changes in LDL anti-inflammatory properties, as reported by inflamed adipocyte. Hypercholesterolemic, postmenopausal females were treated with 40 g/day (i.e., 1.6 servings/day; n=15) of walnuts for 4 weeks. Fatty acids and their oxygenated metabolites, i.e., oxylipins, were quantified in isolated lipoproteins. Human primary adipocytes were exposed to LDL and TNFα-stimulated adipokine production was measured. Walnut treatment elevated α-linolenic acid and its epoxides in all lipoproteins and depleted mid-chain alcohols in VLDL and LDL, but not HDL. Walnuts also reduced TNFα-induced diabetic adipocyte production of IL-6 (-48%, P=.0006) and IL-8 (-30%, P=.01), changes inversely correlated with levels of α-linolenic acid-derived epoxides but not α-linolenic acid itself. In conclusion, modest walnut consumption can alter lipoprotein lipid profiles and enhance their ability to inhibit TNFα-dependent pro-inflammatory responses in human diabetic primary adipocytes. Moreover, this study suggests the oxylipins, rather than the parent fatty acids, mediate LDL action of adipocytes.
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Affiliation(s)
- Kamil Borkowski
- Dept. of Nutritional Sciences, The Pennsylvania State University, University Park, PA; West Coast Metabolomics Center, Genome Center, University of California Davis, Davis, CA; Western Human Nutrition Research Center, Agricultural Research Service, USDA, Davis, CA.
| | - Sun J Yim
- Department of Nutrition, University of California Davis, Davis, CA
| | - Roberta R Holt
- Department of Nutrition, University of California Davis, Davis, CA
| | - Robert M Hackman
- Department of Nutrition, University of California Davis, Davis, CA
| | - Carl L Keen
- Department of Nutrition, University of California Davis, Davis, CA
| | - John W Newman
- West Coast Metabolomics Center, Genome Center, University of California Davis, Davis, CA; Department of Nutrition, University of California Davis, Davis, CA; Western Human Nutrition Research Center, Agricultural Research Service, USDA, Davis, CA
| | - Gregory C Shearer
- Dept. of Nutritional Sciences, The Pennsylvania State University, University Park, PA
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Hardman WE, Primerano DA, Legenza MT, Morgan J, Fan J, Denvir J. Dietary walnut altered gene expressions related to tumor growth, survival, and metastasis in breast cancer patients: a pilot clinical trial. Nutr Res 2019; 66:82-94. [PMID: 30979659 PMCID: PMC6853029 DOI: 10.1016/j.nutres.2019.03.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 02/18/2019] [Accepted: 03/01/2019] [Indexed: 12/13/2022]
Abstract
Consumption of walnuts has slowed breast cancer growth and/or reduced the risk of mammary cancer in mice. The benefit against cancer was associated with altered expression of genes for cancer growth and survival. We hypothesized that walnut consumption would alter gene expression in pathologically confirmed breast cancers of women in a direction that would be expected to decrease breast cancer growth and survival, as was seen in mice. The study was a nonplacebo, 2-arm, clinical trial. Women with breast lumps large enough for research and pathology biopsies were recruited and randomized to walnut consuming or control groups. Immediately after biopsy collection, women in the walnut group began to consume 2 oz of walnuts per day until follow-up surgery. Pathological studies confirmed that lumps were breast cancer in all women who remained in the trial. At surgery, about 2 weeks after biopsy, additional specimens were taken from the breast cancers. Changes in gene expression in the surgical specimen compared to baseline were determined in each individual woman in walnut-consuming (n = 5) and control (n = 5) groups. RNA sequencing expression profiling revealed that expression of 456 identified genes was significantly changed in the tumor due to walnut consumption. Ingenuity Pathway Analysis showed activation of pathways that promote apoptosis and cell adhesion, and inhibition of pathways that promote cell proliferation and migration. These results support the hypothesis that, in humans, walnut consumption could suppress growth and survival of breast cancers.
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Affiliation(s)
- W Elaine Hardman
- Joan C. Edwards School of Medicine, Marshall University, Department of Biomedical Sciences, 1600 Medical Center Dr, Huntington, WV 25701, USA.
| | - Donald A Primerano
- Joan C. Edwards School of Medicine, Marshall University, Department of Biomedical Sciences, 1600 Medical Center Dr, Huntington, WV 25701, USA.
| | - Mary T Legenza
- Edwards Comprehensive Cancer Center, 1400 Hal Greer Dr, Huntington, WV 25701, USA.
| | - James Morgan
- St. Mary's Cancer Center, 2900 1st Ave, Huntington, WV 25702, USA.
| | - Jun Fan
- Joan C. Edwards School of Medicine, Marshall University, Department of Biomedical Sciences, 1600 Medical Center Dr, Huntington, WV 25701, USA.
| | - James Denvir
- Joan C. Edwards School of Medicine, Marshall University, Department of Biomedical Sciences, 1600 Medical Center Dr, Huntington, WV 25701, USA.
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Almoraie NM. The Effect of Walnut Flour on the Physical and Sensory Characteristics of Wheat Bread. INTERNATIONAL JOURNAL OF FOOD SCIENCE 2019; 2019:5676205. [PMID: 30805356 PMCID: PMC6360545 DOI: 10.1155/2019/5676205] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Accepted: 01/02/2019] [Indexed: 11/17/2022]
Abstract
The study was carried out to demonstrate the effect of walnut flour enhancement on the physical, nutritional, and sensory quality of bread. Walnut flour was prepared by soaking, deshelling, oven drying, and sieving whole walnuts. The wheat flour was supplemented with walnut flour by 0, 20, 30, 40, and 50% of the total amount. Standard procedures were taken to estimate the proximate composition of wheat and walnut flour and bread samples. A comparison between the control and supplemented bread was made, where the physical characteristics (weight, volume, and specific volume) and sensory quality were checked. The enhanced bread, where the percentage was between 20 and 50%, appeared to have a significant increase in protein, fat, linoleic acid, and α-linolenic acid and a decrease in carbohydrate and fibre values. Increased walnut flour replacement showed that physical properties, loaf volume and specific loaf volume, have declined. The sensory attributes between the unsupplemented and supplemented bread showed major differences. As an outcome, substituting 30% walnut flour gave the best overall quality of bread acceptability.
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Affiliation(s)
- Noha M. Almoraie
- Food and Nutrition Department, Faculty of Home Economics, King Abdulaziz University, Jeddah, Saudi Arabia
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Dean LL. Targeted and Non-Targeted Analyses of Secondary Metabolites in Nut and Seed Processing. EUR J LIPID SCI TECH 2018. [DOI: 10.1002/ejlt.201700479] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Lisa L. Dean
- Market Quality and Handling Research Unit; United States Department of Agriculture; Agricultural Research Service; Raleigh P.O. Box 7624 Raleigh, NC 27695-7624 USA
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Effects of walnuts consumption on vascular endothelial function in humans: A systematic review and meta-analysis of randomized controlled trials. Clin Nutr ESPEN 2018; 28:52-58. [PMID: 30390893 DOI: 10.1016/j.clnesp.2018.07.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/19/2017] [Accepted: 07/24/2018] [Indexed: 12/11/2022]
Abstract
BACHGROUND AND AIMS Endothelial dysfunction can promote atherosclerosis pathogenesis. The aim of the present meta-analysis was to determine the effects of walnut consumption on peripheral endothelial function (EF) in adults. METHODS PUBMED, MEDLINE and EMBASE were searched to identify studies up to August 2017. Eligible studies conducted randomized controlled trials (RCTs) on the effects of walnut consumption compared with a control on EF. Standard mean difference (SMD) and 95% confidence intervals (CI) were reported as summary statistics. Standard methods were used for assessment of heterogeneity, meta-regression, sensitivity analysis and publication bias. RESULTS Five studies comprising a total of 323 subjects were included in the meta-analysis. The results showed a significant increase in EF after walnut consumption (SMD: 0.40%; 95% CI: 0.20 to 0.62; p < 0.001) with no evidence of heterogeneity across studies. Sensitivity analysis showed that the effect size was robust and not sensitive to any single study. Meta-regression did not indicate any significant association for an increase in EF after walnut consumption with dose of treatment, duration of treatment, or baseline EF. CONCLUSION The available evidence from RCTs suggests there may be a clinically relevant effect of walnut consumption on EF.
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Miller HC, Struyf D, Baptist P, Dalile B, Van Oudenhove L, Van Diest I. A mind cleared by walnut oil: The effects of polyunsaturated and saturated fat on extinction learning. Appetite 2018; 126:147-155. [PMID: 29634989 DOI: 10.1016/j.appet.2018.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 04/06/2018] [Accepted: 04/06/2018] [Indexed: 12/31/2022]
Abstract
The treatment of anxiety-based psychopathology often hinges upon extinction learning. Research in nutritional neuroscience has observed that the regular consumption of perilla oil (50% alpha-linolenic acid (ALA)) facilitates extinction learning in rats (Yamamoto et al., 1988). However, acute facilitation of extinction learning by oils rich in ALA has not been reported for rats or humans, though the acute consumption of rapeseed oil (10% ALA) has been observed to improve cognitive processing speed in humans (Jones, Sünram-Lea, & Wesnes, 2012). For this reason, the present laboratory work examined the effects of adding walnut oil (12% ALA) to a chocolate milkshake on the acquisition, generalization, and extinction of a fear-based prediction in young adults. It compared performance between subjects. The other participants consumed a similar milkshake with either an equicaloric amount of cream (saturated fat), or with no added fat (control). Acquisition and generalization of the fear-based prediction were similar for all groups. However, those who consumed walnut oil extinguished most rapidly and profoundly. Implications for extinction learning are discussed.
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Affiliation(s)
| | - Dieter Struyf
- KULeuven, Health, Behavior and Psychopathology, Belgium
| | | | - Boushra Dalile
- KULeuven, Translational Research in GastroIntestinal Disorders, Belgium
| | | | - Ilse Van Diest
- KULeuven, Health, Behavior and Psychopathology, Belgium.
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Effects of nut consumption on selected inflammatory markers: a systematic review and meta-analysis of randomized controlled trials. Nutrition 2018; 54:129-143. [PMID: 29852452 DOI: 10.1016/j.nut.2018.02.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 01/12/2018] [Accepted: 02/04/2018] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Several randomized controlled trials (RCTs) have assessed the effects of nut consumption on inflammatory markers. However, the results have been inconsistent. The aim of this meta-analysis of RCTs was to quantitatively evaluate the effects of nut consumption on selected inflammatory markers. METHODS PubMed, Embase, Cochrane Library database, and Google Scholar were searched for published RCTs that reported the effects of nuts on inflammatory markers as primary or secondary outcomes in an adult population (aged ≥18 y). Summary estimates of weighted mean differences (WMDs) and 95% confidence intervals (CIs) were calculated using random-effects meta-analysis. RESULTS Twenty-three RCTs met the inclusion criteria. Overall, nut consumption significantly reduced the levels of intercellular adhesion molecule (ICAM)-1 (WMD, -0.17; 95% CI, -0.32 to -0.03; P = 0.01), but had no significant effect on other inflammatory markers. In the subgroup analyses by nut types, mixed nuts had a significant effect on ICAM-1 reduction. The significant effect of nuts on ICAM-1 reduction was only observed in parallel, but not crossover RCTs. Additionally, nut consumption significantly reduced ICAM-1 and vascular cell adhesion molecule-1 levels in long-term (≥12 wk), but not short-term (<12 wk) RCTs. No significant heterogeneity or publication bias was observed in the studies included. CONCLUSIONS Nut consumption significantly reduced ICAM-1 levels, but had no effect on other inflammatory markers. More studies are needed to assess the effects of nuts on inflammation.
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Asgary S, Rastqar A, Keshvari M. Functional Food and Cardiovascular Disease Prevention and Treatment: A Review. J Am Coll Nutr 2018. [PMID: 29528772 DOI: 10.1080/07315724.2017.1410867] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Cardiovascular disease (CVD) is now the leading cause of death globally and is a growing health concern. Lifestyle factors, including nutrition, play an important role in the etiology and treatment of CVD. Functional foods based on their basic nutritional functions can decrease the risk of many chronic diseases and have some physiological benefits. They contain physiologically active components either from plant or animal sources, marketed with the claim of their ability to reduce heart disease risk, focusing primarily on established risk factors, which are hyperlipidemia, diabetes, metabolic syndrome, obesity/overweight, elevated lipoprotein A level, small dense low-density lipoprotein cholesterol (LDL-C), and elevated inflammatory marker levels. Functional foods are suspected to exert their cardioprotective effects mainly through blood lipid profile level and improve hypertension control, endothelial function, platelet aggregation, and antioxidant actions. Clinical and epidemiological observations indicate that vegetable and fruit fiber, nuts and seeds, sea foods, coffee, tea, and dark chocolate have cardioprotective potential in humans, as well whole-grain products containing intact grain kernels rich in fiber and trace nutrients. They are nutritionally more important because they contain phytoprotective substances that might work synergistically to reduce cardiovascular risk. This review will focus on the reciprocal interaction between functional foods and the potential link to cardiovascular health and the possible mechanisms of action.
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Affiliation(s)
- Sedigheh Asgary
- a Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences , Isfahan , Iran
| | - Ali Rastqar
- b Department of Psychiatry and Neuroscience , Université Laval, Québec , Québec , Canada.,c Research Center of University Affiliated Québec Mental Health Institute, Québec , Québec , Canada
| | - Mahtab Keshvari
- a Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences , Isfahan , Iran
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Izadi V, Haghighatdoost F, Moosavian P, Azadbakht L. Effect of Low-Energy-Dense Diet Rich in Multiple Functional Foods on Weight-Loss Maintenance, Inflammation, and Cardiovascular Risk Factors: A Randomized Controlled Trial. J Am Coll Nutr 2018. [DOI: 10.1080/07315724.2017.1412275] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Vajihe Izadi
- Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Fahimeh Haghighatdoost
- Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Parisa Moosavian
- Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Leila Azadbakht
- Department of Community Nutrition, School of Nutrition and Food Science, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
- Diabetes Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
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Das EK, Lai PY, Robinson AT, Pleuss J, Ali MM, Haus JM, Gutterman DD, Phillips SA. Regular Aerobic, Resistance, and Cross-Training Exercise Prevents Reduced Vascular Function Following a High Sugar or High Fat Mixed Meal in Young Healthy Adults. Front Physiol 2018; 9:183. [PMID: 29568273 PMCID: PMC5853082 DOI: 10.3389/fphys.2018.00183] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 02/20/2018] [Indexed: 01/19/2023] Open
Abstract
The postprandial state can negatively influence flow mediated dilation (FMD), a predictor of atherosclerosis and cardiovascular disease. This investigation was designed to determine the effect of regular aerobic and/or resistance exercise on postprandial FMD after a high sugar or high fat mixed meal. Forty-five healthy participants were recruited from one of four groups: lean sedentary (SED), runners, weight lifters, and cross-trainers. Participants were randomly crossed over to a high sugar meal (HSM) and a high fat mixed meal (HFMM; both fat and carbohydrate). Pre-and postprandial endothelial function was assessed for both meals using brachial artery FMD. Plasma lipids, insulin, glucose, hs-CRP, and SOD were also measured with both meals. Endothelium-independent dilation was determined via sublingual nitroglycerin. Brachial artery FMD was reduced in SED following the HSM (9.9 ± 0.9% at baseline, peak reduction at 60 min 6.5 ± 1.0%) and the HFMM (9.4 ± 0.9% at baseline, peak reduction at 120 min 5.9 ± 1.2%; P < 0.05 for both, Mean ± SEM). There was no change in FMD after either HSM or HFMM in runners, weight lifters, and cross-trainers. Post-prandial increases in blood glucose, insulin and triglycerides were less pronounced in the exercisers compared to SED. In addition, exercisers presented lower baseline plasma hs-CRP and higher SOD activity. Nitroglycerin responses were similar among groups. These results suggest that endothelial function is reduced in sedentary adults after a HSM or HFMM, but not in regular aerobic or resistance exercisers. This response may be due to favorable postprandial metabolic responses or lower postprandial levels of inflammation and oxidative stress. These findings may help to explain the cardioprotective effect of exercise.
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Affiliation(s)
- Emon K Das
- Department of Medicine, Cardiovascular Center and Clinical Research Center, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Pui Y Lai
- Department of Medicine, Cardiovascular Center and Clinical Research Center, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Austin T Robinson
- Department of Physical Therapy, University of Illinois, Chicago, IL, United States.,Department of Kinesiology and Nutrition, University of Illinois, Chicago, IL, United States.,Integrative Physiology Laboratory, University of Illinois, Chicago, IL, United States
| | - Joan Pleuss
- Department of Medicine, Cardiovascular Center and Clinical Research Center, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Mohamed M Ali
- Department of Physical Therapy, University of Illinois, Chicago, IL, United States.,Department of Kinesiology and Nutrition, University of Illinois, Chicago, IL, United States.,Integrative Physiology Laboratory, University of Illinois, Chicago, IL, United States
| | - Jacob M Haus
- Department of Kinesiology and Nutrition, University of Illinois, Chicago, IL, United States.,Integrative Physiology Laboratory, University of Illinois, Chicago, IL, United States
| | - David D Gutterman
- Department of Medicine, Cardiovascular Center and Clinical Research Center, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Shane A Phillips
- Department of Medicine, Cardiovascular Center and Clinical Research Center, Medical College of Wisconsin, Milwaukee, WI, United States.,Department of Physical Therapy, University of Illinois, Chicago, IL, United States.,Department of Kinesiology and Nutrition, University of Illinois, Chicago, IL, United States.,Integrative Physiology Laboratory, University of Illinois, Chicago, IL, United States.,Department of Medicine, University of Illinois, Chicago, IL, United States
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Acute effects of diets rich in almonds and walnuts on endothelial function. Indian Heart J 2018; 70:497-501. [PMID: 30170643 PMCID: PMC6116724 DOI: 10.1016/j.ihj.2018.01.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 12/18/2017] [Accepted: 01/16/2018] [Indexed: 12/19/2022] Open
Abstract
Objective Omega-3 fatty acids, especially alpha-linolenic acid (ALA), which are present in nuts may reduce cardiovascular disease (CVD) risk, by changing vascular inflammation and improving endothelial dysfunction. The objective of the study was to evaluate the acute effects of two different diets, one containing walnuts and the other almonds on endothelial function. Methods Twenty-seven overweight volunteers underwent a randomized 2-period, crossover, controlled intervention study. The subjects were given either walnut or almond diets which varied in monounsaturated fatty acid (MUFA) and polyunsaturated fatty acid (PUFA) content. The walnut diet provided 23.1% energy from PUFA and the almond diet provided 7.6% energy from PUFA. Endothelial function was assessed physiologically by flow-mediated dilation (FMD) and biochemically by sVCAM (soluble vascular cell adhesion molecules). Results The walnut diet significantly improved FMD (p = 0.004) and decreased sVCAM (p = 0.009) whereas the almond diet tended to improve FMD (p = 0.06) and significantly decreased sVCAM (p = 0.004). Conclusion Both walnut and almond diets improved FMD and sVCAM and there was no significant difference in physiological and biochemical markers between the two diets.
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Tan BL, Norhaizan ME, Liew WPP. Nutrients and Oxidative Stress: Friend or Foe? OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:9719584. [PMID: 29643982 PMCID: PMC5831951 DOI: 10.1155/2018/9719584] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 11/24/2017] [Accepted: 12/04/2017] [Indexed: 02/07/2023]
Abstract
There are different types of nutritionally mediated oxidative stress sources that trigger inflammation. Much information indicates that high intakes of macronutrients can promote oxidative stress and subsequently contribute to inflammation via nuclear factor-kappa B- (NF-κB-) mediated cell signaling pathways. Dietary carbohydrates, animal-based proteins, and fats are important to highlight here because they may contribute to the long-term consequences of nutritionally mediated inflammation. Oxidative stress is a central player of metabolic ailments associated with high-carbohydrate and animal-based protein diets and excessive fat consumption. Obesity has become an epidemic and represents the major risk factor for several chronic diseases, including diabetes, cardiovascular disease (CVD), and cancer. However, the molecular mechanisms of nutritionally mediated oxidative stress are complex and poorly understood. Therefore, this review aimed to explore how dietary choices exacerbate or dampen the oxidative stress and inflammation. We also discussed the implications of oxidative stress in the adipocyte and glucose metabolism and obesity-associated noncommunicable diseases (NCDs). Taken together, a better understanding of the role of oxidative stress in obesity and the development of obesity-related NCDs would provide a useful approach. This is because oxidative stress can be mediated by both extrinsic and intrinsic factors, hence providing a plausible means for the prevention of metabolic disorders.
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Affiliation(s)
- Bee Ling Tan
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Mohd Esa Norhaizan
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Laboratory of Molecular Biomedicine, Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Research Centre of Excellent, Nutrition and Non-Communicable Diseases (NNCD), Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Winnie-Pui-Pui Liew
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
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Joukar S, Ebrahimi S, Khazaei M, Bashiri A, Shakibi MR, Naderi V, Shahouzehi B, Alasvand M. Co-administration of walnut (Juglans regia) prevents systemic hypertension induced by long-term use of dexamethasone: a promising strategy for steroid consumers. PHARMACEUTICAL BIOLOGY 2017; 55:184-189. [PMID: 27653214 PMCID: PMC7011871 DOI: 10.1080/13880209.2016.1233570] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 04/12/2016] [Accepted: 09/04/2016] [Indexed: 06/06/2023]
Abstract
CONTEXT The long-term consumption of glucocorticoids (GCs) may induce serious adverse effects such as hypertension. There is sufficient evidence related to the benefit of walnuts on the cardiovascular system. OBJECTIVE This study assesses the effect of methanol extract of walnut [Juglans regia L. (Juglandaceae)] on dexamethasone-induced hypertension and the possible mechanisms in Wistar rats. MATERIAL AND METHODS Animals were randomized into control, kernel extract (100 and 200 mg/kg/d, orally), dexamethasone (0.03 mg/kg/d, subcutaneously), dexamethasone + kernel (100 and 200 mg/kg/d, separately), and dexamethasone + captopril (25 mg/kg/d, orally) groups. Animals were treated with water, kernel extract or captopril by gavage 4 d before and during 11 d of saline or dexamethasone treatment. On the 16th day, blood pressure (BP) was recorded and blood samples were collected to measure nitric oxide (NO). Animal hearts were frozen for measurement of malondialdehyde (MDA) and glutathione peroxidase (GPX). RESULTS Dexamethasone increased the diastolic BP and MDA/GPX ratio in comparison with control group (128 ± 7 vs. 105 ± 3 mmHg, p < 0.05 and 0.2 ± 0.046 vs. 0.08 ± 0.02, p < 0.05). Combination of dexamethasone and walnut (200 mg/kg) prevented the dexamethasone-induced diastolic hypertension (109 ± 3 vs. 128 ± 7 mmHg; p < 0.05), increased the GPX level (14.8 ± 1.46 vs. 5.1 ± 0.64 unit/mg, p < 0.05), reduced the MDA/GPX ratio (0.16 ± 0.015 vs. 0.2 ± 0.046) and improved serum NO level. CONCLUSION Similar to captopril, walnut extract normalized dexamethasone-induced hypertension. A part of this beneficial effect apparently involves maintaining balance of the redox system and NO production.
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Affiliation(s)
- Siyavash Joukar
- Cardiovascular Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
- Department of Physiology and Pharmacology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
- Physiology Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Sahar Ebrahimi
- Physiology Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Majid Khazaei
- Neurogenic Inflammation Research Center and Department of Physiology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Alireza Bashiri
- Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Mohammad Reza Shakibi
- Department of Internal Medicine, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Vida Naderi
- Physiology Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Beydolah Shahouzehi
- Physiology Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Masoud Alasvand
- Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran
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Kim Y, Keogh JB, Clifton PM. Benefits of Nut Consumption on Insulin Resistance and Cardiovascular Risk Factors: Multiple Potential Mechanisms of Actions. Nutrients 2017; 9:E1271. [PMID: 29165404 PMCID: PMC5707743 DOI: 10.3390/nu9111271] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 11/02/2017] [Accepted: 11/14/2017] [Indexed: 02/07/2023] Open
Abstract
Epidemiological and clinical studies have indicated that nut consumption could be a healthy dietary strategy to prevent and treat type 2 diabetes (T2DM) and related cardiovascular disease (CVD). The objective of this review is to examine the potential mechanisms of action of nuts addressing effects on glycemic control, weight management, energy balance, appetite, gut microbiota modification, lipid metabolism, oxidative stress, inflammation, endothelial function and blood pressure with a focus on data from both animal and human studies. The favourable effects of nuts could be explained by the unique nutrient composition and bioactive compounds in nuts. Unsaturated fatty acids (monounsaturated fatty acids and polyunsaturated fatty acids) present in nuts may play a role in glucose control and appetite suppression. Fiber and polyphenols in nuts may also have an anti-diabetic effect by altering gut microbiota. Nuts lower serum cholesterol by reduced cholesterol absorption, inhibition of HMG-CoA reductase and increased bile acid production by stimulation of 7-α hydroxylase. Arginine and magnesium improve inflammation, oxidative stress, endothelial function and blood pressure. In conclusion, nuts contain compounds that favourably influence glucose homeostasis, weight control and vascular health. Further investigations are required to identify the most important mechanisms by which nuts decrease the risk of T2DM and CVD.
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Affiliation(s)
- Yoona Kim
- School of Pharmacy and Medical Sciences, University of South Australia, General Post Office Box 2471, Adelaide, SA 5001, Australia.
| | - Jennifer B Keogh
- School of Pharmacy and Medical Sciences, University of South Australia, General Post Office Box 2471, Adelaide, SA 5001, Australia.
| | - Peter M Clifton
- School of Pharmacy and Medical Sciences, University of South Australia, General Post Office Box 2471, Adelaide, SA 5001, Australia.
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Neale EP, Tapsell LC, Guan V, Batterham MJ. The effect of nut consumption on markers of inflammation and endothelial function: a systematic review and meta-analysis of randomised controlled trials. BMJ Open 2017; 7:e016863. [PMID: 29170286 PMCID: PMC5719316 DOI: 10.1136/bmjopen-2017-016863] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 10/18/2017] [Accepted: 10/19/2017] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVES To examine the effect of nut consumption on inflammatory biomarkers and endothelial function. DESIGN A systematic review and meta-analysis. DATA SOURCES MEDLINE, PubMed, Cumulative Index to Nursing and Allied Health Literature and Cochrane Central Register of Controlled Trials (all years to 13 January 2017). ELIGIBILITY CRITERIA Randomised controlled trials (with a duration of 3 weeks or more) or prospective cohort designs conducted in adults; studies assessing the effect of consumption of tree nuts or peanuts on C-reactive protein (CRP), adiponectin, tumour necrosis factor alpha, interleukin-6, intercellular adhesion molecule 1, vascular cell adhesion protein 1 and flow-mediated dilation (FMD). DATA EXTRACTION AND ANALYSIS Relevant data were extracted for summary tables and analyses by two independent researchers. Random effects meta-analyses were conducted to explore weighted mean differences (WMD) in change or final mean values for each outcome. RESULTS A total of 32 studies (all randomised controlled trials) were included in the review. The effect of nut consumption on FMD was explored in nine strata from eight studies (involving 652 participants), with consumption of nuts resulting in significant improvements in FMD (WMD: 0.79%(95% CI 0.35 to 1.23)). Nut consumption resulted in small, non-significant differences in CRP (WMD: -0.01 mg/L (95% CI -0.06 to 0.03)) (26 strata from 25 studies), although sensitivity analyses suggest results for CRP may have been influenced by two individual studies. Small, non-significant differences were also found for other biomarkers of inflammation. CONCLUSIONS This systematic review and meta-analysis of the effects of nut consumption on inflammation and endothelial function found evidence for favourable effects on FMD, a measure of endothelial function. Non-significant changes in other biomarkers indicate a lack of consistent evidence for effects of nut consumption on inflammation. The findings of this analysis suggest a need for more research in this area, with a particular focus on randomised controlled trials. PROSPERO REGISTRATION NUMBER CRD42016045424.
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Affiliation(s)
- Elizabeth P Neale
- School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, Australia
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, Australia
| | - Linda C Tapsell
- School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, Australia
- Illawarra Health and Medical Research Institute, University of Wollongong, Wollongong, Australia
| | - Vivienne Guan
- School of Medicine, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, Australia
| | - Marijka J Batterham
- Statistical Consulting Service, School of Mathematics and Applied Statistics, Faculty of Engineering and Information Sciences, University of Wollongong, Wollongong, Australia
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Bamberger C, Rossmeier A, Lechner K, Wu L, Waldmann E, Stark RG, Altenhofer J, Henze K, Parhofer KG. A Walnut-Enriched Diet Reduces Lipids in Healthy Caucasian Subjects, Independent of Recommended Macronutrient Replacement and Time Point of Consumption: a Prospective, Randomized, Controlled Trial. Nutrients 2017; 9:E1097. [PMID: 28984822 PMCID: PMC5691297 DOI: 10.3390/nu9101097] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/22/2017] [Accepted: 09/29/2017] [Indexed: 01/10/2023] Open
Abstract
Studies indicate a positive association between walnut intake and improvements in plasma lipids. We evaluated the effect of an isocaloric replacement of macronutrients with walnuts and the time point of consumption on plasma lipids. We included 194 healthy subjects (134 females, age 63 ± 7 years, BMI 25.1 ± 4.0 kg/m²) in a randomized, controlled, prospective, cross-over study. Following a nut-free run-in period, subjects were randomized to two diet phases (8 weeks each). Ninety-six subjects first followed a walnut-enriched diet (43 g walnuts/day) and then switched to a nut-free diet. Ninety-eight subjects followed the diets in reverse order. Subjects were also randomized to either reduce carbohydrates (n = 62), fat (n = 65), or both (n = 67) during the walnut diet, and instructed to consume walnuts either as a meal or as a snack. The walnut diet resulted in a significant reduction in fasting cholesterol (walnut vs. CONTROL -8.5 ± 37.2 vs. -1.1 ± 35.4 mg/dL; p = 0.002), non-HDL cholesterol (-10.3 ± 35.5 vs. -1.4 ± 33.1 mg/dL; p ≤ 0.001), LDL-cholesterol (-7.4 ± 32.4 vs. -1.7 ± 29.7 mg/dL; p = 0.029), triglycerides (-5.0 ± 47.5 vs. 3.7 ± 48.5 mg/dL; p = 0.015) and apoB (-6.7 ± 22.4 vs. -0.5 ± 37.7; p ≤ 0.001), while HDL-cholesterol and lipoprotein (a) did not change significantly. Neither macronutrient replacement nor time point of consumption significantly affected the effect of walnuts on lipids. Thus, 43 g walnuts/d improved the lipid profile independent of the recommended macronutrient replacement and the time point of consumption.
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Affiliation(s)
- Charlotte Bamberger
- Department of Internal Medicine 4, Ludwig-Maximilians University Munich, 81377 Munich, Germany.
| | - Andreas Rossmeier
- Department of Internal Medicine 4, Ludwig-Maximilians University Munich, 81377 Munich, Germany.
| | - Katharina Lechner
- Department of Internal Medicine 4, Ludwig-Maximilians University Munich, 81377 Munich, Germany.
| | - Liya Wu
- Department of Internal Medicine 4, Ludwig-Maximilians University Munich, 81377 Munich, Germany.
| | - Elisa Waldmann
- Department of Internal Medicine 4, Ludwig-Maximilians University Munich, 81377 Munich, Germany.
| | - Renée G Stark
- Helmholtz Centrum Munich, Institute for Health Economics and Healthcare Management, 85764 Neuherberg, Germany.
| | - Julia Altenhofer
- Department of Internal Medicine 4, Ludwig-Maximilians University Munich, 81377 Munich, Germany.
| | - Kerstin Henze
- Department of Internal Medicine 4, Ludwig-Maximilians University Munich, 81377 Munich, Germany.
| | - Klaus G Parhofer
- Department of Internal Medicine 4, Ludwig-Maximilians University Munich, 81377 Munich, Germany.
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