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Li A, Wang Q, Li P, Zhao N, Liang Z. Effects of green tea on lipid profile in overweight and obese women. INT J VITAM NUTR RES 2024; 94:239-251. [PMID: 37082776 DOI: 10.1024/0300-9831/a000783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
The effect of green tea administration on serum lipids' concentrations remains unclear as various investigations, which have explored this topic, have produced conflicting results. Gender might be one of the factors influencing the impact of green tea on the lipid profile. Hence, we conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to assess the effect of green tea intake on the lipid profile in overweight and obese women. We searched five databases (Web of Science, SCOPUS, Embase, PubMed/Medline, and Google Scholar) using a combination of MeSH and non-MeSH terms. Results were expressed as weighted mean differences (WMDs) and 95% confidence intervals (CIs) and synthesized with a random-effects model. In total, 15 eligible RCTs with 16 arms (1818 participants) were included in the meta-analysis. The combined effect size revealed a significant reduction in total cholesterol (TC) (WMD: -4.45 mg/dl, 95% CI: -6.63, -2.27, P<0.001) and low-density lipoprotein cholesterol (LDL-C) (WMD: -4.49 mg/dl, 95% CI: -7.50 to -1.47, P=0.003) concentrations following green tea supplementation in overweight and/or obese women. In addition, a more pronounced reduction of triglyceride (TG) levels occurred when the baseline TG value was ≥150 mg/dL (WMD: -24.45 mg/dL, 95% CI: -40.63 to -8.26, P=0.003). Moreover, a significant decrease in TG concentrations occurred in RCTs conducted on overweight subjects (BMI: 25-29.99 kg/m2) (WMD: -5.88 mg/dl, 95% CI: -10.76 to -0.99, P=0.01). In the subgroup analyses based on the study population, a notable increase in high-density lipoprotein cholesterol (HDL-C) values was observed in obese individuals (>30 kg/m2) (WMD: 2.63 mg/dl, 95% CI: 0.10 to 5.16, P=0.041). Consumption of green tea causes a reduction in LDL-C and TC concentrations in overweight and obese women. The decline in TG levels was notable particularly in overweight patients with hypertriglyceridemia at baseline. In addition, a significant increase in HDL-C was detected in obese subjects following intake of green tea.
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Affiliation(s)
- Aixin Li
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - Qian Wang
- Cardiac Catheterization Room, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Peng Li
- Department of Neurology, Jiamusi Central Hospital, Jiamusi, China
| | - Na Zhao
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - Zhaoguang Liang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Bai B, Shen D, Meng S, Guo Y, Feng B, Bo T, Zhang J, Yang Y, Fan S. Separation and Detection of Catechins and Epicatechins in Shanxi Aged Vinegar Using Solid-Phase Extraction and Hydrophobic Deep Eutectic Solvents Combined with HPLC. Molecules 2024; 29:2344. [PMID: 38792205 PMCID: PMC11124522 DOI: 10.3390/molecules29102344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/11/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
This research presents a new, eco-friendly, and swift method combining solid-phase extraction and hydrophobic deep eutectic solvents (DES) with high-performance liquid chromatography (SPE-DES-HPLC) for extracting and quantifying catechin and epicatechin in Shanxi aged vinegar (SAV). The parameters, such as the elution solvent type, the XAD-2 macroporous resin dosage, the DES ratio, the DES volume, the adsorption time, and the desorption time, were optimized via a one-way experiment. A central composite design using the Box-Behnken methodology was employed to investigate the effects of various factors, including 17 experimental runs and the construction of three-dimensional response surface plots to identify the optimal conditions. The results show that the optimal conditions were an HDES (tetraethylammonium chloride and octanoic acid) ratio of 1:3, an XAD-2 macroporous resin dosage of 188 mg, and an adsorption time of 11 min. Under these optimal conditions, the coefficients of determination of the method were greater than or equal to 0.9917, the precision was less than 5%, and the recoveries ranged from 98.8% to 118.8%. The environmentally friendly nature of the analytical process and sample preparation was assessed via the Analytical Eco-Scale and AGREE, demonstrating that this method is a practical and eco-friendly alternative to conventional determination techniques. In summary, this innovative approach offers a solid foundation for the assessment of flavanol compounds present in SAV samples.
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Affiliation(s)
- Baoqing Bai
- School of Life Science, Shanxi University, Taiyuan 030006, China; (B.B.); (D.S.); (S.M.); (Y.G.); (T.B.); (J.Z.)
- Xinghuacun College, Shanxi University, Taiyuan 030006, China
| | - Dan Shen
- School of Life Science, Shanxi University, Taiyuan 030006, China; (B.B.); (D.S.); (S.M.); (Y.G.); (T.B.); (J.Z.)
| | - Siyuan Meng
- School of Life Science, Shanxi University, Taiyuan 030006, China; (B.B.); (D.S.); (S.M.); (Y.G.); (T.B.); (J.Z.)
| | - Yanli Guo
- School of Life Science, Shanxi University, Taiyuan 030006, China; (B.B.); (D.S.); (S.M.); (Y.G.); (T.B.); (J.Z.)
| | - Bin Feng
- Inspection and Testing Center of Shanxi Province, Taiyuan 030031, China;
- Shanxi Key Laboratory of Food and Drug Safety Prevention and Control, Taiyuan 030031, China
| | - Tao Bo
- School of Life Science, Shanxi University, Taiyuan 030006, China; (B.B.); (D.S.); (S.M.); (Y.G.); (T.B.); (J.Z.)
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan 030006, China
| | - Jinhua Zhang
- School of Life Science, Shanxi University, Taiyuan 030006, China; (B.B.); (D.S.); (S.M.); (Y.G.); (T.B.); (J.Z.)
- Xinghuacun College, Shanxi University, Taiyuan 030006, China
| | - Yukun Yang
- School of Life Science, Shanxi University, Taiyuan 030006, China; (B.B.); (D.S.); (S.M.); (Y.G.); (T.B.); (J.Z.)
- Xinghuacun College, Shanxi University, Taiyuan 030006, China
| | - Sanhong Fan
- School of Life Science, Shanxi University, Taiyuan 030006, China; (B.B.); (D.S.); (S.M.); (Y.G.); (T.B.); (J.Z.)
- Xinghuacun College, Shanxi University, Taiyuan 030006, China
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Aryal D, Joshi S, Thapa NK, Chaudhary P, Basaula S, Joshi U, Bhandari D, Rogers HM, Bhattarai S, Sharma KR, Regmi BP, Parajuli N. Dietary phenolic compounds as promising therapeutic agents for diabetes and its complications: A comprehensive review. Food Sci Nutr 2024; 12:3025-3045. [PMID: 38726403 PMCID: PMC11077226 DOI: 10.1002/fsn3.3983] [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: 09/14/2023] [Revised: 01/06/2024] [Accepted: 01/10/2024] [Indexed: 05/12/2024] Open
Abstract
In the middle of an ever-changing landscape of diabetes care, precision medicine, and lifestyle therapies are becoming increasingly important. Dietary polyphenols are like hidden allies found in our everyday meals. These biomolecules, found commonly in fruits, vegetables, and various plant-based sources, hold revolutionary potential within their molecular structure in the way we approach diabetes and its intimidating consequences. There are currently numerous types of diabetes medications, but they are not appropriate for all patients due to limitations in dosages, side effects, drug resistance, a lack of efficacy, and ethnicity. Currently, there has been increased interest in practicing herbal remedies to manage diabetes and its related complications. This article aims to summarize the potential of dietary polyphenols as a foundation in the treatment of diabetes and its associated consequences. We found that most polyphenols inhibit enzymes linked to diabetes. This review outlines the potential benefits of selected molecules, including kaempferol, catechins, rosmarinic acid, apigenin, chlorogenic acid, and caffeic acid, in managing diabetes mellitus as these compounds have exhibited promising results in in vitro, in vivo, in silico, and some preclinical trials study. This encompassing exploration reveals the multifaceted impact of polyphenols not only in mitigating diabetes but also in addressing associated conditions like inflammation, obesity, and even cancer. Their mechanisms involve antioxidant functions, immune modulation, and proinflammatory enzyme regulation. Furthermore, these molecules exhibit anti-tumor activities, influence cellular pathways, and activate AMPK pathways, offering a less toxic, cost-effective, and sustainable approach to addressing diabetes and its complications.
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Affiliation(s)
- Dipa Aryal
- Biological Chemistry Lab, Central Department of ChemistryTribhuvan UniversityKathmanduNepal
| | - Soniya Joshi
- Biological Chemistry Lab, Central Department of ChemistryTribhuvan UniversityKathmanduNepal
| | - Nabin Kumar Thapa
- Biological Chemistry Lab, Central Department of ChemistryTribhuvan UniversityKathmanduNepal
| | - Pratiksha Chaudhary
- Biological Chemistry Lab, Central Department of ChemistryTribhuvan UniversityKathmanduNepal
| | - Sirjana Basaula
- Biological Chemistry Lab, Central Department of ChemistryTribhuvan UniversityKathmanduNepal
| | - Usha Joshi
- Biological Chemistry Lab, Central Department of ChemistryTribhuvan UniversityKathmanduNepal
| | - Damodar Bhandari
- Biological Chemistry Lab, Central Department of ChemistryTribhuvan UniversityKathmanduNepal
| | - Hannah M. Rogers
- Department of ChemistryFlorida Agricultural and Mechanical UniversityTallahasseeFloridaUSA
| | | | - Khaga Raj Sharma
- Biological Chemistry Lab, Central Department of ChemistryTribhuvan UniversityKathmanduNepal
| | - Bishnu P. Regmi
- Department of ChemistryFlorida Agricultural and Mechanical UniversityTallahasseeFloridaUSA
| | - Niranjan Parajuli
- Biological Chemistry Lab, Central Department of ChemistryTribhuvan UniversityKathmanduNepal
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Li A, Kou R, Liu H, Chen M, Wang J, Liu Q, Xing X, Zhang B, Dong L, Wang S. Multi-omics analyses reveal relationships among polyphenol-rich oolong tea consumption, gut microbiota, and metabolic profile: A pilot study. Food Chem 2023; 426:136653. [PMID: 37348398 DOI: 10.1016/j.foodchem.2023.136653] [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: 04/13/2023] [Revised: 06/02/2023] [Accepted: 06/15/2023] [Indexed: 06/24/2023]
Abstract
Convincing evidence has suggested the health potentials of oolong tea (OT) on gut microbiota homeostasis; however, limited population-based studies exist regarding the effect of OT consumption on human gut microbial and metabolic profile. This pilot study explored gut microbial and metabolic changes in healthy adults with a 3-week oolong tea intake. Our findings showed that OT treatment significantly altered gut microbial diversity (Shannon index, 5.4±0.1 vs. 5.7±0.1 pre- and post-OT treatment), reorganized gut microbiota composition, enriched Bacteroides and Prevotella, decreased Megamonas, and improved gastrointestinal function. Also, gut microbes from overweight subjects with BMI >23.9 exhibited greater responses to OT treatment compared with normal-weight counterparts. Metabolomic analysis identified OT intake-induced 23 differential metabolites and 10 enriched metabolic pathways. This study may provide new insights into the association among OT intervention, host gut microbiome and metabolic profile, and improve the knowledge of clinical strategies and personalized nutrition.
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Affiliation(s)
- Ang Li
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Ruixin Kou
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Haiwei Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Mengshan Chen
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Jin Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Qisijing Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Xiaolong Xing
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Bowei Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Lu Dong
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China.
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Li A, Wang J, Kou R, Chen M, Zhang B, Zhang Y, Liu J, Xing X, Peng B, Wang S. Polyphenol-rich oolong tea alleviates obesity and modulates gut microbiota in high-fat diet-fed mice. Front Nutr 2022; 9:937279. [PMID: 35967777 PMCID: PMC9366432 DOI: 10.3389/fnut.2022.937279] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/07/2022] [Indexed: 11/13/2022] Open
Abstract
Obesity is a major public health issue worldwide. Oolong tea (OT), which is partially fermented from Camellia sinensis leaves, has proven health benefits and potential preventive applications in multiple studies. However, research on the role of OT in obesity prevention and potential mechanisms is still limited. The purpose of this study was to investigate the modulatory effects of OT intervention on high-fat diet (HFD)-induced obesity and gut microbiota dysbiosis using an obese mouse model. Our results showed that 8-week OT supplementation with 93.94% polyphenols significantly decreased body weight gain, adipose tissue mass, and serum levels of triglyceride (2.60 mmol/L), cholesterol (5.49 mmol/L), and low-density lipoprotein cholesterol (0.61 mmol/L) in HFD-fed mice. Meanwhile, OT intervention was observed to improve fat accumulation, hepatic damage, glucose intolerance, and endotoxemia and alleviate inflammation by decreasing the levels of pro-inflammatory factors. OT also upregulated the expression of genes including Srebf1, Ppara, Lxra, Pgc1a, and Hsl and downregulated the expression of genes including Leptin, Il-6, and Il-1b. In addition, the gut dysbiosis characterized by decreased flora diversity and increased Firmicutes/Bacteroidetes ratio in obese mice was recovered by OT intervention. Certain differentially abundant microbes caused by HFD feeding, including Enterococcus, Intestinimonas, Blautia, and Bilophila, were also improved by OT treatment. This study demonstrated that OT, as a novel resource of dietary polyphenols, exhibited a protective effect on HFD-induced obesity and gut microbiota disorder.
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Affiliation(s)
- Ang Li
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Jin Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Ruixin Kou
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Mengshan Chen
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Bowei Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Yan Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Jingmin Liu
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Xiaolong Xing
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Bo Peng
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
| | - Shuo Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin, China
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6
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A comprehensive review on bioavailability, safety and antidepressant potential of natural bioactive components from tea. Food Res Int 2022; 158:111540. [DOI: 10.1016/j.foodres.2022.111540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/12/2022] [Accepted: 06/18/2022] [Indexed: 11/22/2022]
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Effect of Green Tea on Weight Gain and Semen Quality of Rabbit Males. Vet Sci 2022; 9:vetsci9070321. [PMID: 35878338 PMCID: PMC9322994 DOI: 10.3390/vetsci9070321] [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: 05/18/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 11/17/2022] Open
Abstract
The goal of the current study was to evaluate the action of the green tea plant (Camellia sinensis, L) on male rabbit reproduction and some non-reproductive indexes. Male rabbits were fed either a standard diet (control group) or a diet enriched with green tea powder (experimental groups; E): 5 g (E1) or 20 g (E2) per 100 kg of the milled complete feed mixture. Weight gain, sperm concentration, total and progressive motility, as well as haematological, and biochemical parameters and changes in testicular tissue histomorphology were evaluated. Feeding with green tea, at both tested concentrations, decreased weight gain per week and the total average weight gain compared to the control group (p < 0.05). Furthermore, green tea decreased sperm concentration, motility and progressive motility in the group fed with a lower dose (5 g) of green tea powder (p < 0.05), whilst a higher dose (20 g) was neutral. Some haematological and biochemical indexes, like medium-size cell count (MID), mean corpuscular haemoglobin concentration (MCHC), platelet percentage (PCT), levels of phosphorus (P) and total proteins (TP) were decreased in one or both experimental groups (p < 0.05), whilst the triglyceride level (TG) was increased in the E2 group (p < 0.05). The thicknesses of the testicular seminiferous tubules and epithelial layer were not affected by any concentration of green tea powder (p > 0.05). These observations suggest that green tea in the diet may have an adverse effect on rabbit growth and sperm quality, but their effect may be potentially dose-dependent.
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Green tea polyphenols in cardiometabolic health: A critical appraisal on phytogenomics towards personalized green tea. PHARMANUTRITION 2022. [DOI: 10.1016/j.phanu.2022.100296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Wang S, Zeng T, Zhao S, Zhu Y, Feng C, Zhan J, Li S, Ho CT, Gosslau A. Multifunctional health-promoting effects of oolong tea and its products. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2021.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Nazli A, Irshad Khan MZ, Ahmed M, Akhtar N, Okla MK, Al-Hashimi A, Al-Qahtani WH, Abdelgawad H, Haq IU. HPLC-DAD Based Polyphenolic Profiling and Evaluation of Pharmacological Attributes of Putranjiva roxburghii Wall. Molecules 2021; 27:molecules27010068. [PMID: 35011299 PMCID: PMC8746485 DOI: 10.3390/molecules27010068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/07/2021] [Accepted: 12/18/2021] [Indexed: 11/17/2022] Open
Abstract
The current study was intended to explore the phytochemical profiling and therapeutic activities of Putranjiva roxburghii Wall. Crude extracts of different plant parts were subjected to the determination of antioxidant, antimicrobial, antidiabetic, cytotoxic, and protein kinase inhibitory potential by using solvents of varying polarity ranges. Maximum phenolic content was notified in distilled water extracts of the stem (DW-S) and leaf (DW-L) while the highest flavonoid content was obtained in ethyl acetate leaf (EA-L) extract. HPLC-DAD analysis confirmed the presence of various polyphenols, quantified in the range of 0.02 ± 0.36 to 2.05 ± 0.18 μg/mg extract. Maximum DPPH scavenging activity was expressed by methanolic extract of the stem (MeOH-S). The highest antioxidant capacity and reducing power was shown by MeOH-S and leaf methanolic extract (MeOH-L), respectively. Proficient antibacterial activity was shown by EA-L extract against Bacillus subtilis and Escherichia coli. Remarkable α-amylase and α-glucosidase inhibition potential was expressed by ethyl acetate fruit (EA-F) and n-Hexane leaf (nH-L) extracts, respectively. In case of brine shrimp lethality assay, 41.67% of the extracts (LC50 < 50 µg/mL) were considered as extremely cytotoxic. The test extracts also showed mild antifungal and protein kinase inhibition activities. The present study explores the therapeutic potential of P. roxburghii and calls for subsequent studies to isolate new bioactive leads through bioactivity-guided isolation.
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Affiliation(s)
- Adila Nazli
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan;
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | | | - Madiha Ahmed
- Shifa College of Pharmaceutical Sciences, Shifa Tameer-e-Millat University, Islamabad 44000, Pakistan
- Correspondence: (M.A.); (I.-u.-H.)
| | - Nosheen Akhtar
- Department of Biological Sciences, National University of Medical Sciences, Rawalpindi 43600, Pakistan;
| | - Mohammad K. Okla
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.K.O.); (A.A.-H.)
| | - Abdulrahman Al-Hashimi
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.K.O.); (A.A.-H.)
| | - Wahidah H. Al-Qahtani
- Department of Food Sciences & Nutrition, College of Food & Agriculture Sciences, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Hamada Abdelgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, 2020 Antwerpen, Belgium;
| | - Ihsan-ul- Haq
- Department of Pharmacy, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad 45320, Pakistan;
- Correspondence: (M.A.); (I.-u.-H.)
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Multiple Risk Factors for Heart Disease: A Challenge to the Ethnopharmacological Use of Croton urucurana Baill. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6580458. [PMID: 34819983 PMCID: PMC8608512 DOI: 10.1155/2021/6580458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Revised: 10/15/2021] [Accepted: 10/28/2021] [Indexed: 11/17/2022]
Abstract
Croton urucurana Baill. is a native Brazilian tree, popularly known as "sangra-d'água" or "sangue-de-dragão," based on the red resinous sap of the trunk. Its use has been transmitted through generations based on popular tradition that attributes analgesic, anti-inflammatory, and cardioprotective properties to the tree. However, its cardioprotective effects have not yet been scientifically investigated. Thus, the present study investigated the pharmacological response to an ethanol-soluble fraction from the leaves of C. urucurana in Wistar rats exposed to smoking and dyslipidemia, two important cardiovascular risk factors. The extract was evaluated by high-performance liquid chromatography. Wistar rats received a 0.5% cholesterol-enriched diet and were exposed to cigarette smoke (9 cigarettes/day for 10 weeks). During the last 5 weeks, the animals were orally treated with vehicle (negative control group), C. urucurana extract (30, 100, and 300 mg/kg), or simvastatin (2.5 mg/kg) + enalapril (15 mg/kg). One group of rats that was not exposed to these risk factors was also evaluated (basal group). Electrocardiograms and systolic, diastolic, and mean blood pressure were measured. Blood was collected to measure total cholesterol, triglycerides, urea, and creatinine. The heart and kidneys were collected and processed for oxidative status and histopathological evaluation. The phytochemical analysis revealed different classes of flavonoids and condensed tannins. The model induced dyslipidemia and cardiac and renal oxidative stress and increased levels of urea and creatinine in the negative control group. Treatment with the C. urucurana extract (300 mg/kg) and simvastatin + enalapril decreased cholesterol and triglyceride levels. In contrast to simvastatin + enalapril treatment, the C. urucurana extract exerted cardiac and renal antioxidant effects. No alterations of electrocardiograms, blood pressure, or histopathology were observed between groups. These findings indicate that C. urucurana exerts lipid-lowering, renal, and cardioprotective effects against oxidative stress in a preclinical model of multiple risk factors for heart disease.
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Fallah S, Musa-Veloso K, Cao J, Venditti C, Lee HY, Hamamji S, Hu J, Appelhans K, Frankos V. Liver biomarkers in adults: Evaluation of associations with reported green tea consumption and use of green tea supplements in U.S. NHANES. Regul Toxicol Pharmacol 2021; 129:105087. [PMID: 34826597 DOI: 10.1016/j.yrtph.2021.105087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 11/16/2021] [Accepted: 11/18/2021] [Indexed: 11/19/2022]
Abstract
Some events of hepatotoxicity have been linked to consumption of green tea supplements. The association between consumption of green tea or green tea supplements and abnormal liver biomarkers in adults was investigated using cross-sectional data from the 2009-2014 United States National Health and Nutrition Examination Survey (U.S. NHANES). Individuals with levels of either bilirubin or GGT, ALT, AST, and/or ALP in excess of the age- and gender-specific upper limits of normal ranges were classified as having abnormal liver biomarkers. Associations between green tea or green tea supplement use (consumption vs. not) and liver function were determined using multiple logistic regression modelling. 12,289 persons were included in the green tea analyses and 12,274 in the green tea supplement analyses. The odds of having one or more abnormal liver biomarkers were significantly reduced (p = 0.01) with consumption of green tea (OR: 0.49; 95% CI: 0.28, 0.85), while no significant association (p = 0.78) was determined for consumption of green tea supplements (OR: 0.92; 95% CI: 0.52, 1.64). Based on data from the 2009-2014 U.S. NHANES, green tea consumption was associated with reduced odds of having one or more abnormal liver biomarkers; whereas, no significant association was determined with consumption of green tea supplements.
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Affiliation(s)
- Shafagh Fallah
- Intertek Health Sciences Inc., Mississauga, Ontario, Canada
| | | | - Joyce Cao
- Herbalife Nutrition, Torrance, CA, USA
| | | | - Han Youl Lee
- Intertek Health Sciences Inc., Mississauga, Ontario, Canada
| | - Samer Hamamji
- Intertek Health Sciences Inc., Mississauga, Ontario, Canada
| | - Jiang Hu
- Herbalife Nutrition, Torrance, CA, USA
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Effect of Green Tea Supplementation on Antioxidant Status in Adults: A Systematic Review and Meta-Analysis of Randomized Clinical Trials. Antioxidants (Basel) 2021; 10:antiox10111731. [PMID: 34829602 PMCID: PMC8614888 DOI: 10.3390/antiox10111731] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 12/13/2022] Open
Abstract
It is well-established that green tea supplementation has antioxidant properties. However, whether green tea supplementation leads to oxidative stress reduction remains unclear, as clinical investigations on this subject have yielded inconsistent outcomes. Consequently, we aimed to determine the effects of green tea supplementation on oxidative stress in adults. A systematic search of English language publications up to 21 August 2021 was carried out in PubMed, Scopus, Embase, and ISI Web of Science, utilizing pertinent keywords. These searches included randomized controlled trials (RCTs) evaluating the relationship between green tea supplementation, malondialdehyde (MDA), and total antioxidant capacity (TAC) in adults. A random-effects model was used to estimate the weighted mean difference (WMD) and 95% confidence intervals (95% CI). Meta-regression and non-linear dose-response analyses were performed to investigate the association between the dosage of green tea (mg/day) and the duration of the intervention (weeks) with pooled effect size. Sixteen RCTs with seventeen arms including 760 participants met the inclusion criteria. Our results indicated that green tea supplementation had significant effects on TAC (weighted mean difference [WMD]: 0.20 mmol/L; 95% CI: 0.09, 0.30, p < 0.001) and significant heterogeneity between studies (I2 = 98.6%, p < 0.001), which was largely related to gender and body mass index (BMI). Subgroup analysis in TAC identified a significant relationship except with low dose supplementation and obese individuals. No relationship between MDA and green tea supplementation was observed in any subgroups; however, meta-regression analysis revealed a linear inverse association between the dosage and significant change in MDA (r = −2117.18, p = 0.017). Our outcomes suggest that green tea supplementation improves TAC and affects MDA based on the dose of the intervention in adults. Future RCTs with longer durations are needed to expand our findings.
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Hu S, Li S, Liu Y, Sun K, Luo L, Zeng L. Aged Ripe Pu-erh Tea Reduced Oxidative Stress-Mediated Inflammation in Dextran Sulfate Sodium-Induced Colitis Mice by Regulating Intestinal Microbes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10592-10605. [PMID: 34460244 DOI: 10.1021/acs.jafc.1c04032] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ripened pu-erh tea has the biological activity of antioxidation and anti-inflammation, which inhibits the related parameters of colitis. However, the role of storage-induced changes in bioactive ingredients of ripened pu-erh tea in colitis remains unclear. In this study, 3.5% dextran sulfate sodium-induced colitis mice were treated with 10 mg/kg bw/day extracts, aged 14 years (P2006) and unaged (P2020) ripened pu-erh tea, respectively, for 1 week. We found that ripened pu-erh tea, especially P2006, inhibited the intestinal oxidative stress-mediated inflammation pathway (TLR4/MyD88/ROS/p38MAPK/NF-κB p65), upregulated the expression of intestinal tight junction proteins (Mucin-2, ZO-1, occludin), promoted M2 polarization of macrophages, and in turn, improved the intestinal immune barrier, which stemmed from the reshaping of intestinal microbiota (e.g., increased Lachnospiraceae_NK4A136_group and Akkermansia levels). Our results speculate that drinking aged ripe pu-erh tea (10 mg/kg bw/day in mice, a human equivalent dose of 7 g/60 kg bw/day) has a practical effect on alleviating and preventing the development of intestinal inflammation.
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Affiliation(s)
- Shanshan Hu
- College of Food Science, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Shi Li
- Key Laboratory of Tea Science of the Ministry of Education, Hunan Agricultural University, Furong District, Changsha, Hunan 410128, People's Republic of China
| | - Yan Liu
- College of Food Science, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Kang Sun
- College of Food Science, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Liyong Luo
- College of Food Science, Southwest University, Beibei, Chongqing 400715, People's Republic of China
| | - Liang Zeng
- College of Food Science, Southwest University, Beibei, Chongqing 400715, People's Republic of China
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Increasing the Power of Polyphenols through Nanoencapsulation for Adjuvant Therapy against Cardiovascular Diseases. Molecules 2021; 26:molecules26154621. [PMID: 34361774 PMCID: PMC8347607 DOI: 10.3390/molecules26154621] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/25/2021] [Accepted: 07/27/2021] [Indexed: 12/27/2022] Open
Abstract
Polyphenols play a therapeutic role in vascular diseases, acting in inherent illness-associate conditions such as inflammation, diabetes, dyslipidemia, hypertension, and oxidative stress, as demonstrated by clinical trials and epidemiological surveys. The main polyphenol cardioprotective mechanisms rely on increased nitric oxide, decreased asymmetric dimethylarginine levels, upregulation of genes encoding antioxidant enzymes via the Nrf2-ARE pathway and anti-inflammatory action through the redox-sensitive transcription factor NF-κB and PPAR-γ receptor. However, poor polyphenol bioavailability and extensive metabolization restrict their applicability. Polyphenols carried by nanoparticles circumvent these limitations providing controlled release and better solubility, chemical protection, and target achievement. Nano-encapsulate polyphenols loaded in food grade polymers and lipids appear to be safe, gaining resistance in the enteric route for intestinal absorption, in which the mucoadhesiveness ensures their increased uptake, achieving high systemic levels in non-metabolized forms. Nano-capsules confer a gradual release to these compounds, as well as longer half-lives and cell and whole organism permanence, reinforcing their effectiveness, as demonstrated in pre-clinical trials, enabling their application as an adjuvant therapy against cardiovascular diseases. Polyphenol entrapment in nanoparticles should be encouraged in nutraceutical manufacturing for the fortification of foods and beverages. This study discusses pre-clinical trials evaluating how nano-encapsulate polyphenols following oral administration can aid in cardiovascular performance.
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Venkatakrishnan K, Chiu HF, Wang CK. Impact of functional foods and nutraceuticals on high blood pressure with a special focus on meta-analysis: review from a public health perspective. Food Funct 2021; 11:2792-2804. [PMID: 32248209 DOI: 10.1039/d0fo00357c] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In recent times many researchers are expressing immense interest in nutraceuticals and functional foods for combating various diseases or abnormal conditions, especially against hypertension (HT). Persistent HT is medically referred to as chronic high blood pressure (BP) and considered to be one of the major risk factors for the deadliest diseases including cardiovascular disease (CVD) and cerebrovascular diseases. Hence HT poses a serious socio-economic burden worldwide, particularly to developing countries. The current treatment strategy for HT includes standard anti-hypertensive drugs, which are associated with many adverse effects and lower drug adherence rates. Therefore, an alternative or complementary natural therapy (functional foods or nutraceuticals or dietary supplements) would be the alternate choice along with a modified lifestyle pattern that might help to manage or combat HT and its related complications. During this review, the author would like to shed light on the basic science behind HT including pathophysiology and the impact of dietary salt on HT and the impact of various functional foods or nutraceuticals against HT in humans (meta-analysis and systemic review). This contribution gives a better idea (public health perspective) for choosing the best functional foods/nutraceuticals for the prevention, management or delaying the onset of HT and its associated conditions along with modified lifestyle patterns and standard anti-hypertensive drugs.
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Affiliation(s)
- Kamesh Venkatakrishnan
- School of Nutrition, Chung Shan Medical University, 110, Sec. 1, Jianguo North Road, Taichung City-40201, Taiwan, Republic of China.
| | - Hui-Fang Chiu
- Department of Chinese Medicine, Taichung Hospital Ministry of Health and Welfare, Taichung-40301, Taiwan, Republic of China
| | - Chin-Kun Wang
- School of Nutrition, Chung Shan Medical University, 110, Sec. 1, Jianguo North Road, Taichung City-40201, Taiwan, Republic of China.
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Self-emulsifying drug delivery system of black seed oil with improved hypotriglyceridemic effect and enhanced hepatoprotective function. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104391] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Mikami A, Ogita T, Namai F, Shigemori S, Sato T, Shimosato T. Oral Administration of Flavonifractor plautii, a Bacteria Increased With Green Tea Consumption, Promotes Recovery From Acute Colitis in Mice via Suppression of IL-17. Front Nutr 2021; 7:610946. [PMID: 33614691 PMCID: PMC7890079 DOI: 10.3389/fnut.2020.610946] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/24/2020] [Indexed: 12/12/2022] Open
Abstract
Flavonifractor plautii (FP) has been reported to participate in the metabolism of catechins in the human gut. However, there is limited information on the immune regulatory effects of this bacterium. We confirmed that the administration of green tea increases the abundance of FP in the gut microbiota and investigated the effect of FP in a mouse colitis model. Mice were orally administered FP for 10 consecutive days; colonic inflammation was evaluated daily on the basis of stool consistency, gross rectal bleeding, and body weight. In the dextran sodium sulfate model, FP-exposed animals exhibited lower levels of inflammation and strong inhibition of interleukin (IL)-17 signaling. Moreover, lipoteichoic acid from FP was identified as the active component mediating IL-17 suppression. Thus, oral administration of FP appears to modulate gut inflammation and represents a viable and inexpensive oral microbial therapeutic.
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Affiliation(s)
- Ayane Mikami
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
| | - Tasuku Ogita
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
| | - Fu Namai
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
| | - Suguru Shigemori
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
| | - Takashi Sato
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
| | - Takeshi Shimosato
- Department of Biomolecular Innovation, Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
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Rosqvist F, Rydell A, Iggman D. The Effects of Foods on Blood Lipids in Non-alcoholic Fatty Liver Disease (NAFLD)-A Systematic Review and Meta-Analysis. Front Nutr 2021; 7:613221. [PMID: 33392241 PMCID: PMC7772219 DOI: 10.3389/fnut.2020.613221] [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: 10/01/2020] [Accepted: 11/24/2020] [Indexed: 12/13/2022] Open
Abstract
Background: Non-alcoholic fatty liver disease (NAFLD) is associated with dyslipidemia and increased cardiovascular disease risk. Dietary choices may produce profound effects on blood lipids. Thus, the purpose of this study was to investigate which foods modify blood lipids in NAFLD. Methods: Systematic review of published systematic reviews and randomized controlled trials (RCTs). Searches were performed in PubMed, Cochrane Database of Systematic Reviews, and Cochrane Central Register of Controlled Trials, from inception through March 2020. Studies in populations with NAFLD, which provided data on foods or dietary patterns and blood lipids were included, but not weight loss diets, supplements, nor individual nutrients. The strength of evidence was evaluated using The Grading of Recommendations Assessment, Development, and Evaluation (GRADE). Results: No relevant systematic reviews were identified. Eleven RCTs were included in the qualitative synthesis. Two RCTs were included in meta-analyses, regarding the comparison between Mediterranean and Low-fat diets, in which there were no clear effects on either high-density lipoprotein cholesterol or triglycerides, with Low evidence. From single RCTs, there was Moderate evidence for reduced triglycerides by a healthy dietary pattern, compared with usual care; and for reduced total cholesterol by a probiotic yogurt, enriched with Lactobacillus acidophilus La5 and Bifidobacterium lactis Bb12, compared with conventional yogurt. For all other comparisons, the evidence was considered as Low or Very low. Conclusion: Few studies were identified which reported effects of foods on blood lipids in subjects with NAFLD. The possible beneficial effect of probiotics warrants further study. PROSPERO identifier: CRD42020178927.
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Affiliation(s)
- Fredrik Rosqvist
- Clinical Nutrition and Metabolism, Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - Andreas Rydell
- Norslund-Svärdsjö Academic Health Care Center, Center for Clinical Research Dalarna, Falun, Sweden.,Division of Family Medicine and Primary Care, Department of Neurobiology, Care Sciences and Society (NVS), Karolinska Institute, Huddinge, Sweden
| | - David Iggman
- Clinical Nutrition and Metabolism, Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden.,Norslund-Svärdsjö Academic Health Care Center, Center for Clinical Research Dalarna, Falun, Sweden
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Chiu HF, Venkatakrishnan K, Wang CK. The role of nutraceuticals as a complementary therapy against various neurodegenerative diseases: A mini-review. J Tradit Complement Med 2020; 10:434-439. [PMID: 32953558 PMCID: PMC7484964 DOI: 10.1016/j.jtcme.2020.03.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/30/2020] [Accepted: 03/30/2020] [Indexed: 02/06/2023] Open
Abstract
In recent times, many scientists have given great attention to nutraceuticals (complementary medicine) as it widely used for promoting health status. In particular for the prevention and treatment of various neurological diseases or disorders without or less adverse effects. The current mini-review was intended to compile all popular (major) nutraceuticals against various neurodegenerative diseases (NDDs) including Parkinson's disease (PD), Alzheimer's disease (AD), Huntington's disease (HD) with special reference to clinical trials. Preliminary reviews indicated that nutraceuticals like curcumin, resveratrol, Epigallocatechin-3-gallate (EGCG), Coenzyme Q10, ω-3 FA (DHA/EPA/ALA), showed better neuroprotective activity against various NDDs in human setting (clinical trial). Hence this contribution will focus only on those popular nutraceuticals with proposed brief mechanisms (antioxidant, anti-inflammatory, mitochondrial homeostasis, autophagy regulation, promote neurogenesis) and its recommendation. This mini-review would aid common people to choose better nutraceuticals to combat various NDDs along with standard neuroprotective agents and modified lifestyle pattern.
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Key Words
- AD, Alzheimer’s disease
- ATP, Adenosine triphosphate
- BBB, Blood-brain barrier
- Clinical trial
- HD, Huntington’s disease
- HO-1, Heme Oxygenase-1
- JNK, c-Jun N-terminal Kinase
- MAPK, Mitogen-activated protein kinase
- NDDs, neurodegenerative diseases
- NF-κB, Nuclear factor Kappa B
- Neurodegenerative diseases
- Neuroprotective agents
- Nrf2, Nuclear factor-E2-related factor
- Nutraceutical
- PD, Parkinson’s disease
- PI3K, Phosphatidylinositol-3-kinase
- SIRT1, Sirtuin 1
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Affiliation(s)
- Hui-Fang Chiu
- Department of Chinese Medicine, Taichung Hospital Ministry of Health and Well-being, Taichung, ROC, Taiwan
| | - Kamesh Venkatakrishnan
- School OfNutrition, Chung Shan Medical University, 110, Sec. 1, Jianguo North Road, Taichung City, ROC, Taiwan
| | - Chin-Kun Wang
- School OfNutrition, Chung Shan Medical University, 110, Sec. 1, Jianguo North Road, Taichung City, ROC, Taiwan
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Ethnopharmacology of Fruit Plants: A Literature Review on the Toxicological, Phytochemical, Cultural Aspects, and a Mechanistic Approach to the Pharmacological Effects of Four Widely Used Species. Molecules 2020; 25:molecules25173879. [PMID: 32858815 PMCID: PMC7504726 DOI: 10.3390/molecules25173879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 07/31/2020] [Accepted: 07/31/2020] [Indexed: 02/07/2023] Open
Abstract
Fruit plants have been widely used by the population as a source of food, income and in the treatment of various diseases due to their nutritional and pharmacological properties. The aim of this study was to review information from the most current research about the phytochemical composition, biological and toxicological properties of four fruit species widely used by the world population in order to support the safe medicinal use of these species and encourage further studies on their therapeutic properties. The reviewed species are: Talisia esculenta, Brosimum gaudichaudii, Genipa americana, and Bromelia antiacantha. The review presents the botanical description of these species, their geographical distribution, forms of use in popular medicine, phytochemical studies and molecules isolated from different plant organs. The description of the pharmacological mechanism of action of secondary metabolites isolated from these species was detailed and toxicity studies related to them were reviewed. The present study demonstrates the significant concentration of phenolic compounds in these species and their anti-inflammatory, anti-tumor, photosensitizing properties, among others. Such species provide important molecules with pharmacological activity that serve as raw materials for the development of new drugs, making further studies necessary to elucidate mechanisms of action not yet understood and prove the safety for use in humans.
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23
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Sandoval V, Sanz-Lamora H, Arias G, Marrero PF, Haro D, Relat J. Metabolic Impact of Flavonoids Consumption in Obesity: From Central to Peripheral. Nutrients 2020; 12:E2393. [PMID: 32785059 PMCID: PMC7469047 DOI: 10.3390/nu12082393] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/01/2020] [Accepted: 08/05/2020] [Indexed: 02/07/2023] Open
Abstract
The prevention and treatment of obesity is primary based on the follow-up of a healthy lifestyle, which includes a healthy diet with an important presence of bioactive compounds such as polyphenols. For many years, the health benefits of polyphenols have been attributed to their anti-oxidant capacity as free radical scavengers. More recently it has been described that polyphenols activate other cell-signaling pathways that are not related to ROS production but rather involved in metabolic regulation. In this review, we have summarized the current knowledge in this field by focusing on the metabolic effects of flavonoids. Flavonoids are widely distributed in the plant kingdom where they are used for growing and defensing. They are structurally characterized by two benzene rings and a heterocyclic pyrone ring and based on the oxidation and saturation status of the heterocyclic ring flavonoids are grouped in seven different subclasses. The present work is focused on describing the molecular mechanisms underlying the metabolic impact of flavonoids in obesity and obesity-related diseases. We described the effects of each group of flavonoids in liver, white and brown adipose tissue and central nervous system and the metabolic and signaling pathways involved on them.
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Affiliation(s)
- Viviana Sandoval
- Department of Nutrition, Food Sciences and Gastronomy, School of Pharmacy and Food Sciences, Food Torribera Campus, University of Barcelona, E-08921 Santa Coloma de Gramenet, Spain; (V.S.); (H.S.-L.); (G.A.); (P.F.M.)
| | - Hèctor Sanz-Lamora
- Department of Nutrition, Food Sciences and Gastronomy, School of Pharmacy and Food Sciences, Food Torribera Campus, University of Barcelona, E-08921 Santa Coloma de Gramenet, Spain; (V.S.); (H.S.-L.); (G.A.); (P.F.M.)
- Institute of Nutrition and Food Safety of the University of Barcelona (INSA-UB), E-08921 Santa Coloma de Gramenet, Spain
| | - Giselle Arias
- Department of Nutrition, Food Sciences and Gastronomy, School of Pharmacy and Food Sciences, Food Torribera Campus, University of Barcelona, E-08921 Santa Coloma de Gramenet, Spain; (V.S.); (H.S.-L.); (G.A.); (P.F.M.)
| | - Pedro F. Marrero
- Department of Nutrition, Food Sciences and Gastronomy, School of Pharmacy and Food Sciences, Food Torribera Campus, University of Barcelona, E-08921 Santa Coloma de Gramenet, Spain; (V.S.); (H.S.-L.); (G.A.); (P.F.M.)
- Institute of Biomedicine of the University of Barcelona (IBUB), E-08028 Barcelona, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBER-OBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
| | - Diego Haro
- Department of Nutrition, Food Sciences and Gastronomy, School of Pharmacy and Food Sciences, Food Torribera Campus, University of Barcelona, E-08921 Santa Coloma de Gramenet, Spain; (V.S.); (H.S.-L.); (G.A.); (P.F.M.)
- Institute of Biomedicine of the University of Barcelona (IBUB), E-08028 Barcelona, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBER-OBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
| | - Joana Relat
- Department of Nutrition, Food Sciences and Gastronomy, School of Pharmacy and Food Sciences, Food Torribera Campus, University of Barcelona, E-08921 Santa Coloma de Gramenet, Spain; (V.S.); (H.S.-L.); (G.A.); (P.F.M.)
- Institute of Nutrition and Food Safety of the University of Barcelona (INSA-UB), E-08921 Santa Coloma de Gramenet, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBER-OBN), Instituto de Salud Carlos III, E-28029 Madrid, Spain
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Evans LW, Athukorala M, Martinez-Guryn K, Ferguson BS. The Role of Histone Acetylation and the Microbiome in Phytochemical Efficacy for Cardiovascular Diseases. Int J Mol Sci 2020; 21:E4006. [PMID: 32503339 PMCID: PMC7313062 DOI: 10.3390/ijms21114006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/12/2020] [Accepted: 05/27/2020] [Indexed: 12/15/2022] Open
Abstract
Cardiovascular diseases (CVD) are the main cause of death worldwide and create a substantial financial burden. Emerging studies have begun to focus on epigenetic targets and re-establishing healthy gut microbes as therapeutic options for the treatment and prevention of CVD. Phytochemicals, commonly found in fruits and vegetables, have been shown to exert a protective effect against CVD, though their mechanisms of action remain incompletely understood. Of interest, phytochemicals such as curcumin, resveratrol and epigallocatechin gallate (EGCG) have been shown to regulate both histone acetylation and microbiome re-composition. The purpose of this review is to highlight the microbiome-epigenome axis as a therapeutic target for food bioactives in the prevention and/or treatment of CVD. Specifically, we will discuss studies that highlight how the three phytochemicals above alter histone acetylation leading to global changes in gene expression and CVD protection. Then, we will expand upon these phytochemicals to discuss the impact of phytochemical-microbiome-histone acetylation interaction in CVD.
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Affiliation(s)
- Levi W. Evans
- Department of Nutrition, University of Nevada Reno, Reno, NV 89557, USA; (L.W.E.); (M.A.)
| | - Maheshi Athukorala
- Department of Nutrition, University of Nevada Reno, Reno, NV 89557, USA; (L.W.E.); (M.A.)
| | | | - Bradley S. Ferguson
- Department of Nutrition, University of Nevada Reno, Reno, NV 89557, USA; (L.W.E.); (M.A.)
- Center of Biomedical Research Excellence for Molecular and Cellular Signal Transduction in the Cardiovascular System, University of Nevada Reno, Reno, NV 89557, USA
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25
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Effect of green tea consumption on blood lipids: a systematic review and meta-analysis of randomized controlled trials. Nutr J 2020; 19:48. [PMID: 32434539 PMCID: PMC7240975 DOI: 10.1186/s12937-020-00557-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 04/22/2020] [Indexed: 12/14/2022] Open
Abstract
Background Strong epidemiologic evidence indicates that green tea intake is protective against hyperlipidemia; however, randomized controlled studies have presented varying results. In the present study, we aimed to conduct a literature review and meta-analysis to assess the effect of green tea on blood lipids. Methods PubMed, Embase, and the Cochrane Library were electronically explored from inception to September 2019 for all relevant studies. Random effect models were used to estimate blood lipid changes between green tea supplementation and control groups by evaluating the weighted mean differences (WMD) with 95% confidence intervals (CIs). The risk of bias for study was assessed using the Cochrane tool. Publication bias was evaluated using funnel plots and Egger’s tests. Results Thirty-one trials with a total of 3321 subjects were included in the meta-analysis. In general, green tea intake significantly lowered the total cholesterol (TC); WMD: − 4.66 mg/dL; 95% CI: − 6.36, − 2.96 mg/dL; P < 0.0001) and low-density lipoprotein (LDL) cholesterol (WMD:− 4.55 mg/dL; 95% CI: − 6.31, − 2.80 mg/dL; P < 0.0001) levels compared with those in the control. Green tea consumption did not affect high-density lipoprotein (HDL) cholesterol; however, it reduced the triglycerides compared with that in the control (WMD: − 3.77 mg/dL; 95% CI: − 8.90, 1.37 mg/dL; P = 0.15). In addition, significant publication bias from funnel plots or Egger’s tests was not evident. Conclusions Collectively, consumption of green tea lowers LDL cholesterol and TC, but not HDL cholesterol or triglycerides in both normal weight subjects and those who were overweight/obese; however, additional well-designed studies that include more diverse populations and longer duration are warranted.
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Lin Y, Shi D, Su B, Wei J, Găman MA, Sedanur Macit M, Borges do Nascimento IJ, Guimaraes NS. The effect of green tea supplementation on obesity: A systematic review and dose-response meta-analysis of randomized controlled trials. Phytother Res 2020; 34:2459-2470. [PMID: 32372444 DOI: 10.1002/ptr.6697] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 03/03/2020] [Accepted: 03/22/2020] [Indexed: 12/17/2022]
Abstract
The effects of green tea (GT) in obese subjects have been evaluated in different studies, but no consensus has been obtained due to the heterogeneity of the results. The dosage, the type of extract, and the duration of the intervention are the main contributors to the heterogeneity of the results. Therefore, the present systematic review and meta-analysis aimed to evaluate the efficacy and dose-response relationship of GT. Several databases were searched from inception to September 2019 to identify clinical trials that examined the influence of GT supplements on obesity indices in humans. Combined results using the random-effects model indicated that body weight (WMD: -1.78 kg, 95% CI: -2.80, -0.75, p = .001) and body mass index (BMI) (WMD: -0.65 kg/m2 , 95% CI: -1.04, -0.25, p = .001) did change significantly following GT administration. The reduction in waist circumference (WC) after GT consumption was significant in subjects in trials employing GT ≥800 mg/day (WMD: -2.06 cm) and with a treatment duration <12 weeks (WMD: -2.39 cm). Following the dose-response evaluation, GT intake did alter body weight, with a more important reduction when the GT dosage was <500 mg/day and the treatment duration was of 12 weeks. The results of present meta-analysis study support the use of GT for the improvement of obesity indices. Thus, we suggest that the use of GT can be combined with a balanced and healthy diet and regular physical exercise in the management of obese patients.
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Affiliation(s)
- Ying Lin
- Department of Endocrinology, Jinan Municipal Hospital of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Dianfeng Shi
- Department of Internal Medicine, Jinan Central Hospital, Jinan, Shandong Province, China
| | - Bo Su
- Department of General Internal Medicine, Xiyuan Hospital China Academy of Chinese Medical Sciences, Beijing, China
| | - Jing Wei
- Department of Endocrinology, Jinan Municipal Hospital of Traditional Chinese Medicine, Jinan City, Shandong Province, China
| | - Mihnea-Alexandru Găman
- "CarolDavila" University of Medicine and Pharmacy, Bucharest, Romania.,Center of Hematology and Bone Marrow Transplantation, Fundeni Clinical Institute, Bucharest, Romania
| | - Melahat Sedanur Macit
- Department of Nutrition and Dietetics, Ondokuz Mayis University, Faculty of Health Sciences, Samsun, Turkey
| | | | - Nathalia Sernizon Guimaraes
- University Hospital and School of Medicine, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Mahmoodi M, Hosseini R, Kazemi A, Ofori-Asenso R, Mazidi M, Mazloomi SM. Effects of green tea or green tea catechin on liver enzymes in healthy individuals and people with nonalcoholic fatty liver disease: A systematic review and meta-analysis of randomized clinical trials. Phytother Res 2020; 34:1587-1598. [PMID: 32067271 DOI: 10.1002/ptr.6637] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 01/20/2020] [Accepted: 01/31/2020] [Indexed: 02/06/2023]
Abstract
The therapeutic potential of green tea as a rich source of antioxidants and anti-inflammatory compounds has been investigated by several studies. The present study aimed to systematically review and analyze randomized clinical trials (RCTs) assessing the effects of green tea, catechin, and other forms of green tea supplementation on levels of liver enzymes. PubMed, SCOPUS, EMBASE, and Cochrane databases were searched until February 2019. All RCTs investigating the effect of green tea or its catechin on liver enzymes including alanine transaminase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and bilirubin were included. A total of 15 RCTs were included. The overall effect of green tea on liver enzymes was nonsignificant (ALT [Standardized mean difference (SMD)= -0.17, CI -0.42 to 0.08, p = .19], AST [SMD = -0.07, CI -0.43 to 0.29, p = .69], and ALP [SMD = -0.17, CI -0.45 to 0.1, p = .22]). However, subgroup analyses showed that green tea reduced the levels of liver enzymes in participants with nonalcoholic fatty liver disease (NAFLD) but in healthy subjects, a small significant increase in liver enzymes was observed. In conclusion, the results of this study suggest that the effect of green tea on liver enzymes is dependent on the health status of individuals. While a moderate reducing effect was observed in patients with NAFLD, in healthy subjects, a small increasing effect was found.
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Affiliation(s)
- Marzieh Mahmoodi
- Student Research Committee, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Razieh Hosseini
- Student Research Committee, Department of Nutrition, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Asma Kazemi
- Nutrition Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Richard Ofori-Asenso
- Department of Pharmacy, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark.,Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - Mohsen Mazidi
- Department of Twin Research and Genetic Epidemiology, King's College London, London, UK
| | - Seyed Mohammad Mazloomi
- Nutrition Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Food Hygiene and Quality Control, Nutrition and Food Sciences Research Center, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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28
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Tang GY, Meng X, Gan RY, Zhao CN, Liu Q, Feng YB, Li S, Wei XL, Atanasov AG, Corke H, Li HB. Health Functions and Related Molecular Mechanisms of Tea Components: An Update Review. Int J Mol Sci 2019; 20:E6196. [PMID: 31817990 PMCID: PMC6941079 DOI: 10.3390/ijms20246196] [Citation(s) in RCA: 165] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 12/02/2019] [Accepted: 12/06/2019] [Indexed: 02/07/2023] Open
Abstract
Tea is widely consumed all over the world. Generally, tea is divided into six categories: White, green, yellow, oolong, black, and dark teas, based on the fermentation degree. Tea contains abundant phytochemicals, such as polyphenols, pigments, polysaccharides, alkaloids, free amino acids, and saponins. However, the bioavailability of tea phytochemicals is relatively low. Thus, some novel technologies like nanotechnology have been developed to improve the bioavailability of tea bioactive components and consequently enhance the bioactivity. So far, many studies have demonstrated that tea shows various health functions, such as antioxidant, anti-inflammatory, immuno-regulatory, anticancer, cardiovascular-protective, anti-diabetic, anti-obesity, and hepato-protective effects. Moreover, it is also considered that drinking tea is safe to humans, since reports about the severe adverse effects of tea consumption are rare. In order to provide a better understanding of tea and its health potential, this review summarizes and discusses recent literature on the bioactive components, bioavailability, health functions, and safety issues of tea, with special attention paid to the related molecular mechanisms of tea health functions.
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Affiliation(s)
- Guo-Yi Tang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, No. 10 Sassoon Road, Pokfulam, Hong Kong 999077, China; (Y.-B.F.); (S.L.)
| | - Xiao Meng
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
| | - Ren-You Gan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (X.-L.W.); (H.C.)
- Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China
| | - Cai-Ning Zhao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
| | - Qing Liu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
| | - Yi-Bin Feng
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, No. 10 Sassoon Road, Pokfulam, Hong Kong 999077, China; (Y.-B.F.); (S.L.)
| | - Sha Li
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, No. 10 Sassoon Road, Pokfulam, Hong Kong 999077, China; (Y.-B.F.); (S.L.)
| | - Xin-Lin Wei
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (X.-L.W.); (H.C.)
| | - Atanas G. Atanasov
- The Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland;
| | - Harold Corke
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; (X.-L.W.); (H.C.)
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (G.-Y.T.); (X.M.); (C.-N.Z.); (Q.L.)
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29
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Singh C, Prakash C, Mishra P, Tiwari KN, Mishra SK, More RS, Kumar V, Singh J. Hepatoprotective efficacy of Premna integrifolia L. leaves against aflatoxin B1-induced toxicity in mice. Toxicon 2019; 166:88-100. [DOI: 10.1016/j.toxicon.2019.05.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 05/18/2019] [Accepted: 05/20/2019] [Indexed: 02/07/2023]
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30
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Cao SY, Zhao CN, Gan RY, Xu XY, Wei XL, Corke H, Atanasov AG, Li HB. Effects and Mechanisms of Tea and Its Bioactive Compounds for the Prevention and Treatment of Cardiovascular Diseases: An Updated Review. Antioxidants (Basel) 2019; 8:E166. [PMID: 31174371 PMCID: PMC6617169 DOI: 10.3390/antiox8060166] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 12/16/2022] Open
Abstract
Cardiovascular diseases (CVDs) are critical global public health issues with high morbidity and mortality. Epidemiological studies have revealed that regular tea drinking is inversely associated with the risk of CVDs. Additionally, substantial in vitro and in vivo experimental studies have shown that tea and its bioactive compounds are effective in protecting against CVDs. The relevant mechanisms include reducing blood lipid, alleviating ischemia/reperfusion injury, inhibiting oxidative stress, enhancing endothelial function, attenuating inflammation, and protecting cardiomyocyte function. Moreover, some clinical trials also proved the protective role of tea against CVDs. In order to provide a better understanding of the relationship between tea and CVDs, this review summarizes the effects of tea and its bioactive compounds against CVDs and discusses potential mechanisms of action based on evidence from epidemiological, experimental, and clinical studies.
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Affiliation(s)
- Shi-Yu Cao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Cai-Ning Zhao
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Ren-You Gan
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Xiao-Yu Xu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
| | - Xin-Lin Wei
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Harold Corke
- Department of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Atanas G Atanasov
- The Institute of Genetics and Animal Breeding, Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland.
- Department of Pharmacognosy, University of Vienna, 1090 Vienna, Austria.
- Institute of Neurobiology, Bulgarian Academy of Sciences, 23 Acad. G. Bonchev str., 1113 Sofia, Bulgaria.
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China.
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31
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Popular functional foods and herbs for the management of type-2-diabetes mellitus: A comprehensive review with special reference to clinical trials and its proposed mechanism. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.04.039] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
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32
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33
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Ruiz-León AM, Lapuente M, Estruch R, Casas R. Clinical Advances in Immunonutrition and Atherosclerosis: A Review. Front Immunol 2019; 10:837. [PMID: 31068933 PMCID: PMC6491827 DOI: 10.3389/fimmu.2019.00837] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/01/2019] [Indexed: 12/11/2022] Open
Abstract
Atherosclerosis is a chronic low-grade inflammatory disease that affects large and medium-sized arteries and is considered to be a major underlying cause of cardiovascular disease (CVD). The high risk of mortality by atherosclerosis has led to the development of new strategies for disease prevention and management, including immunonutrition. Plant-based dietary patterns, functional foods, dietary supplements, and bioactive compounds such as the Mediterranean Diet, berries, polyunsaturated fatty acids, ω-3 and ω-6, vitamins E, A, C, and D, coenzyme Q10, as well as phytochemicals including isoflavones, stilbenes, and sterols have been associated with improvement in atheroma plaque at an inflammatory level. However, many of these correlations have been obtained in vitro and in experimental animals' models. On one hand, the present review focuses on the evidence obtained from epidemiological, dietary intervention and supplementation studies in humans supporting the role of immunonutrient supplementation and its effect on anti-inflammatory response in atherosclerotic disease. On the other hand, this review also analyzes the possible molecular mechanisms underlying the protective action of these supplements, which may lead a novel therapeutic approach to prevent or attenuate diet-related disease, such as atherosclerosis.
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Affiliation(s)
- Ana María Ruiz-León
- Department of Internal Medicine, Hospital Clinic, University of Barcelona, Barcelona, Spain.,Mediterranean Diet Foundation, Barcelona, Spain
| | - María Lapuente
- Department of Internal Medicine, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - Ramon Estruch
- Department of Internal Medicine, Hospital Clinic, University of Barcelona, Barcelona, Spain.,CIBER 06/03: Fisiopatología de la Obesidad y la Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Rosa Casas
- Department of Internal Medicine, Hospital Clinic, University of Barcelona, Barcelona, Spain.,CIBER 06/03: Fisiopatología de la Obesidad y la Nutrición, Instituto de Salud Carlos III, Madrid, Spain
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34
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Baláži A, Sirotkin AV, Földešiová M, Makovický P, Chrastinová Ľ, Makovický P, Chrenek P. Green tea can supress rabbit ovarian functions in vitro and in vivo. Theriogenology 2019; 127:72-79. [PMID: 30669068 DOI: 10.1016/j.theriogenology.2019.01.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 12/18/2018] [Accepted: 01/11/2019] [Indexed: 12/30/2022]
Abstract
The aim of present study was to evaluate the action of green tea and its constituents on rabbit ovarian functions and some non-reproductive indexes. In in vitro experiments, rabbit ovarian fragments were cultured with green tea constituents - epigallocatechin-3-gallate (EGCG), green tea polyphenols (GTPP) and resveratrol (RSV) (at 0, 1, 10 or 100 μg/mL medium). The accumulation of an apoptosis marker - caspase 3 and the release of progesterone (P4) and testosterone (T) were measured. In in vivo experiments, does were fed a standard diet or a diet enriched with green tea powder. The weight gain, mortality, ovarian length and weight, conception and kindling rate, number of liveborn, stillborn, and weaned pups, diameter of ovarian follicles and some blood haematological and biochemical parameters were analysed. Culture of ovarian fragments with EGCG increased accumulation of caspase 3, whilst both GTTP and RSV decreased it. EGCG inhibited both P4 and T output, GTPP stimulated P4 and inhibited T, whilst RSV promoted release of both P4 and T. Feeding with green tea increased ovarian length and diameter of ovarian non-ovulated peri-ovulatory haemorrhagic but not of primary and secondary growing follicles. Furthermore, green tea reduced conception and kindling rate, the number of liveborn and weaned pups, increased female mortality but not their weight gain. It reduced platelet distribution width, but it did not affect other haematological and biochemical indexes. These observations suggest that dietary green tea can reduce rabbit doe's viability, ovarian functions and fecundity, perhaps due to changes in ovarian cell apoptosis, steroid hormones release and blockade of the ovulation of large ovarian follicles. The anti-reproductive action of green tea could be due to its constituent - EGCG with pro-apoptotic and anti-steroid hormone properties.
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Affiliation(s)
- Andrej Baláži
- National Agricultural and Food Centre, Research Institute for Animal Production Nitra, Lužianky, Slovak Republic.
| | - Alexander V Sirotkin
- Constantine the Philosopher University, Department of Zoology and Anthropology, 949 74, Nitra, Slovak Republic.
| | - Martina Földešiová
- National Agricultural and Food Centre, Research Institute for Animal Production Nitra, Lužianky, Slovak Republic.
| | - Peter Makovický
- Czech Centre for Phenogenomics, Division BIOCEV, Institute of Molecular Genetics, Department of Transgenic Models of Diseases, ASCR, 252 50, Vestec, Czech Republic.
| | - Ľubica Chrastinová
- National Agricultural and Food Centre, Research Institute for Animal Production Nitra, Lužianky, Slovak Republic.
| | - Pavol Makovický
- Selye Janos University, Faculty of Education, 945 01, Komárno, Slovak Republic.
| | - Peter Chrenek
- National Agricultural and Food Centre, Research Institute for Animal Production Nitra, Lužianky, Slovak Republic; Slovak University of Agriculture, Faculty of Biotechnology and Food Science, 949 76, Nitra, Slovak Republic; UTP University of Science and Technology, Faculty of Animal Breeding and Biology, Mazowiecka 28, 85-084, Bydgoszcz, Poland.
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35
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Venkatakrishnan K, Chiu HF, Wang CK. Extensive review of popular functional foods and nutraceuticals against obesity and its related complications with a special focus on randomized clinical trials. Food Funct 2019; 10:2313-2329. [DOI: 10.1039/c9fo00293f] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Weight management (anti-obesity) by popular functional foods and nutraceuticals.
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Affiliation(s)
- Kamesh Venkatakrishnan
- School of Nutrition
- Chung Shan Medical University
- Taichung City-40201
- Taiwan
- Republic of China
| | - Hui-Fang Chiu
- Department of Chinese Medicine
- Taichung Hospital Ministry of Health and Welfare
- Taichung-40301
- Taiwan
- Republic of China
| | - Chin-Kun Wang
- School of Nutrition
- Chung Shan Medical University
- Taichung City-40201
- Taiwan
- Republic of China
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36
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Wu T, Xu J, Chen Y, Liu R, Zhang M. Oolong tea polysaccharide and polyphenols prevent obesity development in Sprague-Dawley rats. Food Nutr Res 2018; 62:1599. [PMID: 30622452 PMCID: PMC6303733 DOI: 10.29219/fnr.v62.1599] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 09/11/2018] [Accepted: 11/27/2018] [Indexed: 11/20/2022] Open
Abstract
Background Several studies have evaluated the effects of oolong tea extracts on obesity. However, only few studies focused on the anti-obesity effect of specific components of oolong tea. Objective This study investigated the specific anti-obesity capabilities of oolong tea polysaccharide (TPS) and tea polyphenols (TPP) in high-fat diet-induced Sprague–Dawley rats. Methods Oolong tea water extract, TPS, TPP, and polysaccharide mixed with polyphenol (TPSM) given at doses of 400 or 800 mg/kg were administered to rats fed with high-fat diet for 6 weeks to explore the anti-obesity effects of the treatments. Results TPS and TPP were responsible for the suppressive effect on body fat accumulation. TPSM exhibited the highest effect on body weight reduction, and TPS and TPP effectively reduced serum leptin levels and significantly improved blood lipid and antioxidant levels. Moreover, microarray analysis of hepatic and adipose gene expression profiles revealed that TPP and TPS inhibited obesity through effects on the pathways of fatty acid biosynthesis, steroid hormone biosynthesis, unsaturated fatty acid biosynthesis, fatty acid elongation, glycerolipid metabolism, and glycerophospholipid metabolism. Conclusions TPSM might be a potential therapy for the treatment of obesity.
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Affiliation(s)
- Tao Wu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.,State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, China.,Tianjin Food Safety & Low Carbon Manufacturing Collaborative Innovation Center, Tianjin, China
| | - Jinling Xu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China
| | - Yijun Chen
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, China
| | - Rui Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, China
| | - Min Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.,State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, China.,Tianjin Food Safety & Low Carbon Manufacturing Collaborative Innovation Center, Tianjin, China
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