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Ross FC, Mayer DE, Horn J, Cryan JF, Del Rio D, Randolph E, Gill CIR, Gupta A, Ross RP, Stanton C, Mayer EA. Potential of dietary polyphenols for protection from age-related decline and neurodegeneration: a role for gut microbiota? Nutr Neurosci 2024:1-19. [PMID: 38287652 DOI: 10.1080/1028415x.2023.2298098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
Many epidemiological studies have shown the beneficial effects of a largely plant-based diet, and the strong association between the consumption of a Mediterranean-type diet with healthy aging including a lower risk of cognitive decline. The Mediterranean diet is characterized by a high intake of olive oil, fruits and vegetables and is rich in dietary fiber and polyphenols - both of which have been postulated to act as important mediators of these benefits. Polyphenols are large molecules produced by plants to protect them from environmental threats and injury. When ingested by humans, as little as 5% of these molecules are absorbed in the small intestine with the majority metabolized by the gut microbiota into absorbable simple phenolic compounds. Flavan-3-ols, a type of flavonoid, contained in grapes, berries, pome fruits, tea, and cocoa have been associated with many beneficial effects on several risk factors for cardiovascular disease, cognitive function and brain regions involved in memory formation. Both preclinical and clinical studies suggest that these brain and heart benefits can be attributed to endothelial vascular effects and anti-inflammatory properties among others. More recently the gut microbiota has emerged as a potential modulator of the aging brain and intriguingly polyphenols have been shown to alter microbiota composition and be metabolized by different microbial species. However, there is a need for well controlled studies in large populations to identify predictors of response, particularly given the vast inter-individual variation of human gut microbiota.
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Affiliation(s)
- F C Ross
- APC Microbiome Ireland, University College Cork, Co. Cork, Ireland
| | - D E Mayer
- Institute of Human Nutrition, Columbia University, New York, USA
| | - J Horn
- Oppenheimer Centre for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, UCLA, Los Angeles, USA
| | - J F Cryan
- APC Microbiome Ireland, University College Cork, Co. Cork, Ireland
- Department Anatomy & Neuroscience, University College Cork, Co. Cork, Ireland
| | - D Del Rio
- Department of Food and Drugs, University of Parma, Parma, Italy
| | - E Randolph
- Oppenheimer Centre for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, UCLA, Los Angeles, USA
| | - C I R Gill
- Nutrition Innovation Centre for Food and Health, Northern Ireland, UK
| | - A Gupta
- Division of Digestive Diseases, UCLA, Los Angeles, USA
- Goodman Luskin Microbiome Center at UCLA, Los Angeles, CA, USA
| | - R P Ross
- APC Microbiome Ireland, University College Cork, Co. Cork, Ireland
| | - C Stanton
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork, Ireland
| | - E A Mayer
- Oppenheimer Centre for Neurobiology of Stress and Resilience, Vatche and Tamar Manoukian Division of Digestive Diseases, David Geffen School of Medicine, UCLA, Los Angeles, USA
- Goodman Luskin Microbiome Center at UCLA, Los Angeles, CA, USA
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Zaabalawi A, Renshall L, Beards F, Lightfoot AP, Degens H, Alexander Y, Hasan R, Bilal H, Graf BA, Harris LK, Azzawi M. Internal Mammary Arteries as a Model to Demonstrate Restoration of the Impaired Vasodilation in Hypertension, Using Liposomal Delivery of the CYP1B1 Inhibitor, 2,3',4,5'-Tetramethoxystilbene. Pharmaceutics 2022; 14:2046. [PMID: 36297480 PMCID: PMC9611804 DOI: 10.3390/pharmaceutics14102046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 11/23/2022] Open
Abstract
A significant number of patients with severe cardiovascular disease, undergoing coronary artery bypass grafting (CABG), present with hypertension. While internal mammary arteries (IMAs) may be a better alternative to vein grafts, their impaired vasodilator function affects their patency. Our objectives were to (1) determine if inhibition of the cytochrome P450 enzyme CYP1B1, using liposome-encapsulated 2,3′,4,5′-tetramethoxystilbene (TMS), can potentiate vasodilation of IMAs from CABG patients, and (2) assess mechanisms involved using coronary arteries from normal rats, in an ex vivo model of hypertension. PEGylated liposomes were synthesized and loaded with TMS (mean diameter 141 ± 0.9 nm). Liposomal delivery of TMS improved its bioavailability Compared to TMS solution (0.129 ± 0.02 ng/mL vs. 0.086 ± 0.01 ng/mL at 4 h; p < 0.05). TMS-loaded liposomes alleviated attenuated endothelial-dependent acetylcholine (ACh)-induced dilation in diseased IMAs (@ACh 10−4 M: 56.9 ± 5.1%; n = 8 vs. 12.7 ± 7.8%; n = 6; p < 0.01) for TMS-loaded liposomes vs. blank liposomes, respectively. The alleviation in dilation may be due to the potent inhibition of CYP1B1 by TMS, and subsequent reduction in reactive oxygen species (ROS) moieties and stimulation of nitric oxide synthesis. In isolated rat coronary arteries exposed to a hypertensive environment, TMS-loaded liposomes potentiated nitric oxide and endothelium-derived hyperpolarization pathways via AMPK. Our findings are promising for the future development of TMS-loaded liposomes as a promising therapeutic strategy to enhance TMS bioavailability and potentiate vasodilator function in hypertension, with relevance for early and long-term treatment of CABG patients, via the sustained and localized TMS release within IMAs.
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Affiliation(s)
- Azziza Zaabalawi
- Department of Life Sciences, Manchester Metropolitan University, Manchester M1 5GD, UK
| | - Lewis Renshall
- Division of Pharmacy and Optometry, University of Manchester, Manchester M13 9PL, UK
- Maternal & Fetal Health Research Centre, University of Manchester, Manchester M13 9WL, UK
- Manchester Academic Health Science Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester M13 9WL, UK
| | - Frances Beards
- Division of Pharmacy and Optometry, University of Manchester, Manchester M13 9PL, UK
- Maternal & Fetal Health Research Centre, University of Manchester, Manchester M13 9WL, UK
- Manchester Academic Health Science Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester M13 9WL, UK
| | - Adam P. Lightfoot
- Department of Life Sciences, Manchester Metropolitan University, Manchester M1 5GD, UK
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool L3 3AP, UK
| | - Hans Degens
- Department of Life Sciences, Manchester Metropolitan University, Manchester M1 5GD, UK
- Institute of Sport Science and Innovations, Lithuanian Sports University, 44221 Kaunas, Lithuania
| | - Yvonne Alexander
- Department of Life Sciences, Manchester Metropolitan University, Manchester M1 5GD, UK
| | - Ragheb Hasan
- Department of Cardiothoracic Surgery, Manchester Foundation Trust, Manchester M13 9WL, UK
| | - Haris Bilal
- Department of Cardiothoracic Surgery, Manchester Foundation Trust, Manchester M13 9WL, UK
| | - Brigitte A. Graf
- Faculty of Health and Education, Manchester Metropolitan University, Manchester M15 6BG, UK
| | - Lynda K. Harris
- Division of Pharmacy and Optometry, University of Manchester, Manchester M13 9PL, UK
- Maternal & Fetal Health Research Centre, University of Manchester, Manchester M13 9WL, UK
- Manchester Academic Health Science Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester M13 9WL, UK
| | - May Azzawi
- Department of Life Sciences, Manchester Metropolitan University, Manchester M1 5GD, UK
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The Effect of Dietary Polyphenols on Vascular Health and Hypertension: Current Evidence and Mechanisms of Action. Nutrients 2022; 14:nu14030545. [PMID: 35276904 PMCID: PMC8840535 DOI: 10.3390/nu14030545] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/20/2022] [Accepted: 01/23/2022] [Indexed: 02/08/2023] Open
Abstract
The aim of this review was to explore existing evidence from studies conducted on humans and summarize the mechanisms of action of dietary polyphenols on vascular health, blood pressure and hypertension. There is evidence that some polyphenol-rich foods, including berry fruits rich in anthocyanins, cocoa and green tea rich in flavan-3-ols, almonds and pistachios rich in hydroxycinnamic acids, and soy products rich in isoflavones, are able to improve blood pressure levels. A variety of mechanisms can elucidate the observed effects. Some limitations of the evidence, including variability of polyphenol content in plant-derived foods and human absorption, difficulty disentangling the effects of polyphenols from other dietary compounds, and discrepancy of doses between animal and human studies should be taken into account. While no single food counteracts hypertension, adopting a plant-based dietary pattern including a variety of polyphenol-rich foods is an advisable practice to improve blood pressure.
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ROS responsive mesoporous silica nanoparticles for smart drug delivery: A review. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102599] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Di Pietro N, Baldassarre MPA, Cichelli A, Pandolfi A, Formoso G, Pipino C. Role of Polyphenols and Carotenoids in Endothelial Dysfunction: An Overview from Classic to Innovative Biomarkers. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6381380. [PMID: 33133348 PMCID: PMC7593735 DOI: 10.1155/2020/6381380] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/26/2020] [Accepted: 10/05/2020] [Indexed: 12/14/2022]
Abstract
Nowadays, the dramatically increased prevalence of metabolic diseases, such as obesity and diabetes mellitus and their related complications, including endothelial dysfunction and cardiovascular disease, represents one of the leading causes of death worldwide. Dietary nutrients together with healthy lifestyles have a crucial role in the endothelium health-promoting effects. From a growing body of evidence, active natural compounds from food, including polyphenols and carotenoids, have attracted particular attention as a complementary therapy on atherosclerosis and cardiovascular disease, as well as preventive approaches through the attenuation of inflammation and oxidative stress. They mainly act as radical scavengers by promoting a variety of biological mechanisms, such as improvements in endothelial function, blood pressure, platelet activity, and insulin sensitivity, and by modulating various known biomarkers. The present review highlights the role of polyphenols and carotenoids in early endothelial dysfunction with attention to their beneficial effect in modulating both classical and recent technologically generated emerging biomarkers. These, alone or in combination, can play an important role in the prediction, diagnosis, and evolution of cardiovascular disease. However, a main challenge is to speed up early and prompt new interventions in order to prevent or slow down disease progression, even with an adequate intake of bioactive compounds. Hence, there is an urgent need of new more validated, appropriate, and reliable diagnostic and therapeutic biomarkers useful to diagnose endothelial dysfunction at an earlier stage.
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Affiliation(s)
- Natalia Di Pietro
- Department of Medical, Oral and Biotechnological Sciences, University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology-CAST (ex CeSI-MeT), University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Maria Pompea Antonia Baldassarre
- Center for Advanced Studies and Technology-CAST (ex CeSI-MeT), University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
- Department of Medicine and Aging Sciences, University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Angelo Cichelli
- Department of Medical, Oral and Biotechnological Sciences, University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Assunta Pandolfi
- Department of Medical, Oral and Biotechnological Sciences, University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology-CAST (ex CeSI-MeT), University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Gloria Formoso
- Center for Advanced Studies and Technology-CAST (ex CeSI-MeT), University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
- Department of Medicine and Aging Sciences, University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
| | - Caterina Pipino
- Department of Medical, Oral and Biotechnological Sciences, University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
- Center for Advanced Studies and Technology-CAST (ex CeSI-MeT), University G. d'Annunzio of Chieti-Pescara, 66100 Chieti, Italy
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