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Xiang L, Zhu C, Qian J, Zhou X, Wang M, Song Z, Chen C, Yu W, Chen L, Zeng L. Positive contributions of the stem to the formation of white tea quality-related metabolites during withering. Food Chem 2024; 449:139173. [PMID: 38593722 DOI: 10.1016/j.foodchem.2024.139173] [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: 12/23/2023] [Revised: 03/25/2024] [Accepted: 03/27/2024] [Indexed: 04/11/2024]
Abstract
Most teas, including white tea, are produced from tender shoots containing both leaf and stem. However, the effect of the stem on white tea quality remains unclear, especially during withering, an essential process. Therefore, this study investigated the withering-induced changes in the leaves and stems of Camellia sinensis cv. 'Fudingdabai' by multi-group analysis. During withering, the levels of catechin and theobromine (i.e., major flavor-related compounds) decreased slightly, mainly in the leaves. The abundance of some proteinaceous amino acids related to fresh taste increased in stems due to increased protein hydrolysis. In addition, changes in biosynthetic pathways caused a decrease in theanine (a major non-proteinaceous amino acid) and an increase in gamma-aminobutyric acid in stems. Terpenes, mainly in the stems, were partially affected by withering. Phenylacetaldehyde, a major contributor to white tea aroma, increased mainly in the stems. These findings reflect the positive contribution of the stem to white tea quality.
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Affiliation(s)
- Lihui Xiang
- Tea Research Institute, Fujian Academy of Agricultural Sciences, No. 104 Pudang Road, Xindian Town, Jin'an District, Fuzhou 350012, China
| | - Chen Zhu
- Guangdong Provincial Key Laboratory of Applied Botany & State Key Laboratory of Plant Diversity and Specialty Crops, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China; Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China
| | - Jiajia Qian
- Guangdong Provincial Key Laboratory of Applied Botany & State Key Laboratory of Plant Diversity and Specialty Crops, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China; Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China
| | - Xiaochen Zhou
- Guangdong Provincial Key Laboratory of Applied Botany & State Key Laboratory of Plant Diversity and Specialty Crops, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China; Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China; University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China
| | - Miao Wang
- Guangdong Provincial Key Laboratory of Applied Botany & State Key Laboratory of Plant Diversity and Specialty Crops, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China; Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China
| | - Zhenshuo Song
- Tea Research Institute, Fujian Academy of Agricultural Sciences, No. 104 Pudang Road, Xindian Town, Jin'an District, Fuzhou 350012, China
| | - Changsong Chen
- Tea Research Institute, Fujian Academy of Agricultural Sciences, No. 104 Pudang Road, Xindian Town, Jin'an District, Fuzhou 350012, China
| | - Wenquan Yu
- Fujian Academy of Agricultural Sciences, No. 247 Wusi Road, Gulou District, Fuzhou 350003, China.
| | - Lin Chen
- Tea Research Institute, Fujian Academy of Agricultural Sciences, No. 104 Pudang Road, Xindian Town, Jin'an District, Fuzhou 350012, China.
| | - Lanting Zeng
- Guangdong Provincial Key Laboratory of Applied Botany & State Key Laboratory of Plant Diversity and Specialty Crops, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China; Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, South China Botanical Garden, Chinese Academy of Sciences, No. 723 Xingke Road, Tianhe District, Guangzhou 510650, China; University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China.
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2
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Yang H, Shen L, Li Y, Wu S, Zhang X, Yang X. Non-targeted metabolomic analysis reveals the mechanism of quality formation of citrus flower-green tea. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:5807-5815. [PMID: 38380915 DOI: 10.1002/jsfa.13405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 01/28/2024] [Accepted: 02/18/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND Citrus flower-green tea (CT) is a scented tea processed from green tea (GT) and fresh citrus flower, which is favored by consumers due to its potential health benefits and unique citrus flavor. This study evaluated the quality of CT and revealed the mechanism of its quality formation. RESULTS The CT had a significant citrus flavor and a good antioxidant activity, and its sensory quality was superior to that of GT. Headspace solid-phase microextraction-gas chromatography-mass spectrometry (HS-SPME-GC-MS) analysis revealed that the scenting process resulted in a significant increase of alkenes such as β-pinene, trans-β-ocimene, α-farnesene, isoterpinolene, and γ-terpinene, as well as a significant decrease of alcohols such as α-terpineol, l-menthol, and linalool in CT in comparison with GT. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis revealed that the levels of flavonoids (such as neohesperidin, hesperidin, tangeritin, hesperetin 5-O-glucoside, and nobiletin) and alkaloids (such as trigonelline and theobromine) in CT increased significantly after scenting process, while the levels of amino acids (such as valine and l-phenylalanine) and organic acids (such as ascorbic acid) decreased significantly. CONCLUSION These observations showed that the scenting process promoted the absorption of aroma from citrus flowers by GT and the changes in its non-volatile metabolites, leading to the formation of citrus flavor quality in CT. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Hui Yang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Lan Shen
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Yuren Li
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Shenqun Wu
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Xiaoyu Zhang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
| | - Xiaoping Yang
- Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan, China
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3
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Ye Y, Gong Y, Huang P, Luo F, Gan R, Fang C. Dynamic changes in the non-volatile and flavour compounds in withered tea leaves of three different colour cultivars based on multi-omics. Food Chem 2024; 449:139281. [PMID: 38608608 DOI: 10.1016/j.foodchem.2024.139281] [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: 02/22/2024] [Revised: 04/02/2024] [Accepted: 04/05/2024] [Indexed: 04/14/2024]
Abstract
In this study, metabolomics and proteomics were performed to investigate the fluctuations of non-volatile compounds and proteins in tea leaves from three tea cultivars with varying colours during withering. A total of 2798 compounds were detected, exhibiting considerable variations in amino acids, phenylpropanoids, and flavonoids. The ZH1 cultivar displayed increased levels of amino acids but decreased levels of polyphenols, which might be associated with the up-regulation of enzymes responsible for protein degradation and subsequent amino acid production, as well as the down-regulation of enzymes involved in phenylpropanoid and flavonoid biosynthesis. The FUD and ZH1 cultivars had elevated levels of flavanols and flavanol-O-glycosides, which were regulated by the upregulation of FLS. The ZJ and ZH1 cultivars displayed elevated levels of theaflavin and peroxidase. This work presents a novel investigation into the alterations of metabolites and proteins between tea cultivars during withering, and helps with the tea cultivar selection and manufacturing development.
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Affiliation(s)
- Yulong Ye
- Tea Research Institute, Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu 610066, PR China
| | - Yiyun Gong
- Tea Research Institute, Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu 610066, PR China
| | - Ping Huang
- Tea Research Institute, Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu 610066, PR China
| | - Fan Luo
- Tea Research Institute, Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu 610066, PR China
| | - Renyou Gan
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Singapore, 138669, Singapore
| | - Chunyan Fang
- Tea Research Institute, Institute of Quality Standard and Testing Technology Research, Sichuan Academy of Agricultural Sciences, Chengdu 610066, PR China.
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4
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Yang Y, Liang Q, Zhang B, Zhang J, Fan L, Kang J, Lin Y, Huang Y, Tan TC, Ho LH. Adsorption and desorption characteristics of flavonoids from white tea using macroporous adsorption resin. J Chromatogr A 2024; 1715:464621. [PMID: 38198876 DOI: 10.1016/j.chroma.2023.464621] [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: 09/18/2023] [Revised: 11/29/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024]
Abstract
White tea contains the highest flavonoids compared to other teas. While there have been numerous studies on the components of different tea varieties, research explicitly focusing on the flavonoid content of white tea remains scarce, making the need for a good flavonoid purification process for white tea even more important. This study compared the adsorption and desorption performance of five types of macroporous resins: D101, HP20, HPD500, DM301, and AB-8. Among the tested resins, AB-8 was selected based on its best adsorption and desorption performance to investigate the static adsorption kinetics and dynamic adsorption-desorption purification of white tea flavonoids. The optimal purification process was determined: adsorption temperature 25 °C, crude tea flavonoid extract pH 3, ethanol concentration 80 %, sample loading flow rate and eluent flow rate 1.5 BV/min, and eluent dosage 40 BV. The results indicated that the adsorption process followed pseudo-second-order kinetics. Under the above purification conditions, the purity of the total flavonoids in the purified white tea flavonoid increased from approximately 17.69 to 46.23 %, achieving a 2.61-fold improvement, indicating good purification results. The purified white tea flavonoid can be further used for nutraceutical and pharmaceutical applications.
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Affiliation(s)
- Yuhua Yang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China; Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia USM, Penang 11800, Malaysia
| | - Quanming Liang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Bo Zhang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Jianming Zhang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Li Fan
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Jiahui Kang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Yiqin Lin
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China
| | - Yan Huang
- College of Tea and Food Science, Wuyi University, Wuyishan 354300, PR China.
| | - Thuan-Chew Tan
- Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia USM, Penang 11800, Malaysia; Renewable Biomass Transformation Cluster, School of Industrial Technology, Universiti Sains Malaysia USM, Penang 11800, Malaysia.
| | - Lee-Hoon Ho
- Department of Food Industry, Faculty of Bioresources and Food Industry, Universiti Sultan Zainal Abidin, Besut, Terengganu 22200, Malaysia
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Liu H, Song J, Zhou L, Peng S, McClements DJ, Liu W. Construction of curcumin-fortified juices using their self-derived extracellular vesicles as natural delivery systems: grape, tomato, and orange juices. Food Funct 2023; 14:9364-9376. [PMID: 37789722 DOI: 10.1039/d3fo02605a] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
Different fruit and vegetable juices were first used to encapsulate curcumin to improve its solubility, stability, and bioaccessibility, which is expected to enable designing of polyphenol-enriched beverages and impact human health and well-being. Briefly, fruit and vegetable-derived extracellular vesicles usually serve as transport and communication tools between different cells, which means they also may be utilized as delivery carriers for other bioactive agents. Curcumin, as a model polyphenol with many physiological activities, typically has low water-solubility, stability, and bioaccessibility. Therefore, extracellular vesicles were applied to load curcumin to overcome these challenges and to facilitate its incorporation into fruit and vegetable juices. Three kinds of curcumin-loaded fruit and vegetable juices, including curcumin-loaded grape (Cur-G), tomato (Cur-T), and orange (Cur-O) juices, exhibited higher encapsulation efficiency (>80%) than others. The patterns of XRD and FTIR confirmed that curcumin moved into extracellular vesicles in the amorphous form and that the hydrogen bonding force was found between them. Three kinds of fruit and vegetable juices can significantly enhance the solubility, stability and bioavailability of curcumin, but the degrees of improvement are different. For instance, Cur-O exhibited the highest encapsulation efficiency, chemical stability, and effective bioaccessibility than Cur-G and Cur-T. In summary, this study shows that natural fruit and vegetable juices can effectively improve the solubility, stability and bioaccessibility of active polyphenols, which is expected to enable successful designing of nutrient-enriched beverages with a simple method according to various needs of people and be directly applied to food processing and home production.
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Affiliation(s)
- Hang Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, P. R. China.
| | - Jiawen Song
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, P. R. China.
| | - Lei Zhou
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, P. R. China.
| | - Shengfeng Peng
- Department of Rehabilitation Medicine, the Second Affiliated Hospital of Nanchang University, Nanchang University, Nanchang 330006, P. R. China.
| | - David Julian McClements
- Biopolymers and Colloids Laboratory, Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Wei Liu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, Jiangxi, P. R. China.
- National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang, Jiangxi, 330022, China
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6
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Sun Y, Yuan X, Luo Z, Cao Y, Liu S, Liu Y. Metabolomic and transcriptomic analyses reveal comparisons against liquid-state fermentation of primary dark tea, green tea and white tea by Aspergillus cristatus. Food Res Int 2023; 172:113115. [PMID: 37689883 DOI: 10.1016/j.foodres.2023.113115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 06/05/2023] [Accepted: 06/09/2023] [Indexed: 09/11/2023]
Abstract
Liquid-state fermentation (LSF) of tea leaves is a promising way to obtain tea-based nutraceutical products rich in various bioactive compounds. In the study, the changes of bioactive compounds, tea pigments and complex metabolites from LSF of primary dark tea, green tea and white tea infusions with Aspergillus cristatus were determined. Chemical analyses revealed that soluble sugars, monosaccharide composition, total polyphenols, total flavonoids, free amino acids, soluble proteins and tea pigments were changed in different ways. An untargeted metabolomic analysis and ribonucleic acid sequencing (RNA-seq) based transcriptomic analysis were performed to investigate the metabolic differentiation and clarify the key differentially expressed genes (DEGs, fold change >2 and p < 0.05), showing that amino acid metabolism, carbohydrate metabolism and lipid metabolism were the most enriched pathways during A. cristatus fermentation of primary dark tea, green tea and white tea infusions. In addition, glycerophospholipid metabolism, linoleic acid metabolism and phenylalanine metabolism were greatly accumulated in the fermentation of primary dark tea and white tea infusions; Pyruvate metabolism, glycolysis/gluconeogenesis, fatty acid degradation, tyrosine metabolism, phenylalanine, tyrosine and tryptophan biosynthesis and valine and leucine, isoleucine degradation were greatly accumulated in the fermentation of primary dark tea and green tea infusions; Starch and sucrose metabolism was greatly accumulated in the fermentation of green tea and white tea infusions; Galactose metabolism was significantly enhanced in the fermentation of primary dark tea infusion; Amino sugar and nucleotide sugar metabolism, sphingolipid metabolism and alanine, aspartate and glutamate metabolism were significantly enhanced in the fermentation of green tea infusion. Besides, some other pathways involving aminobenzoate degradation, biosynthesis of cofactors, pyrimidine metabolism, benzoxazinoid biosynthesis and phenazine biosynthesis, tropane, piperidine and pyridine alkaloid biosynthesis and flavone and flavonol biosynthesis also differed from each other. These findings support that A. cristatus plays a vital role in the biochemical and genetic regulation of metabolite profile, and could be considered a potential prospect for better use of A. cristatus on different kinds of tea materials.
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Affiliation(s)
- Yujiao Sun
- Natural Food Macromolecule Research Center, School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China; Shaanxi Research Institute of Agricultural Products Processing Technology, Xi'an 710021, PR China.
| | - Xushuang Yuan
- Natural Food Macromolecule Research Center, School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Zhaojun Luo
- Natural Food Macromolecule Research Center, School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Yungang Cao
- Natural Food Macromolecule Research Center, School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, PR China
| | - Shuai Liu
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710003, PR China
| | - Yang Liu
- Shaanxi Academy of Traditional Chinese Medicine, Xi'an 710003, PR China.
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7
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Silva V, Faria HOF, Sousa-Filho CPB, de Alvarenga JFR, Fiamoncini J, Otton R. Thermoneutrality or standard temperature: is there an ideal housing temperature to study the antisteatotic effects of green tea in obese mice? J Nutr Biochem 2023; 120:109411. [PMID: 37423321 DOI: 10.1016/j.jnutbio.2023.109411] [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: 09/05/2022] [Revised: 06/15/2023] [Accepted: 06/29/2023] [Indexed: 07/11/2023]
Abstract
Metabolic-associated fatty liver disease (MAFLD) is a condition characterized by excessive accumulation of triglycerides in hepatocytes, currently considered the number one cause of chronic liver disease. MAFLD is strongly associated with obesity, type 2 diabetes, hyperlipidaemia, and hypertension. Emphasis has been placed on the use of green tea (GT), produced from the Camellia sinensis plant, rich in antioxidants as polyphenols and catechins, on obesity and MAFLD treatment/prevention. Studies carried out in rodent models housed at a standard temperature (ST, 22°C) are being questioned as ST is a determining factor on generating changes in the physiology of immune response, and energy metabolism. On the other hand, it seems that thermoneutrality (TN, 28°C) represents a closer parallel to human physiology. In this perspective, we investigated the effects of GT (500 mg/kg of body weight, over 12 weeks, 5 days/week) by comparing mice housed at ST or TN in a model of MAFLD of diet-induced obese males C57Bl/6 mice. We show that the liver phenotype at TN exhibits a more severe MAFLD while GT ameliorates this condition. In parallel, GT restores the expression of genes involved in the lipogenic pathway, regardless of temperature, with slight modifications in lipolysis/fatty acid oxidation. We observed an increase promoted by GT in PPARα and PPARγ proteins independently of housing temperature and a dual pattern of bile acid synthesis. Thus, animals' conditioning temperature is a key factor that can interfere in the results involving obesity and MAFLD, although GT has beneficial effects against MAFLD independently of the housing temperature of mice.
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Affiliation(s)
- Victória Silva
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Sao Paulo, Brazil
| | | | | | - José Fernando Rinaldi de Alvarenga
- Department of Food Science and Experimental Nutrition, Food Research Center, School of Pharmaceutical Sciences, University of São Paulo, Sao Paulo, Sao Paulo, Brazil
| | - Jarlei Fiamoncini
- Department of Food Science and Experimental Nutrition, Food Research Center, School of Pharmaceutical Sciences, University of São Paulo, Sao Paulo, Sao Paulo, Brazil
| | - Rosemari Otton
- Interdisciplinary Postgraduate Program in Health Sciences, Cruzeiro do Sul University, Sao Paulo, Sao Paulo, Brazil.
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8
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Blasiak J, Chojnacki J, Szczepanska J, Fila M, Chojnacki C, Kaarniranta K, Pawlowska E. Epigallocatechin-3-Gallate, an Active Green Tea Component to Support Anti-VEGFA Therapy in Wet Age-Related Macular Degeneration. Nutrients 2023; 15:3358. [PMID: 37571296 PMCID: PMC10421466 DOI: 10.3390/nu15153358] [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: 06/23/2023] [Revised: 07/19/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
Age-related macular degeneration (AMD) is a largely incurable disease and an emerging problem in aging societies. It occurs in two forms, dry and wet (exudative, neovascular), which may cause legal blindness and sight loss. Currently, there is not any effective treatment for dry AMD. Meanwhile, repeated intravitreal injections with antibodies effective against vascular endothelial growth factor A (VEGFA) slow down wet AMD progression but are not free from complications. (-)-Epigallocatechin-3-gallate (EGCG) is an active compound of green tea, which exerts many beneficial effects in the retinal pigment epithelium and the neural retina. It has been reported to downregulate the VEGFA gene by suppressing its activators. The inhibition of mitogen-activated protein kinases 1 and 3 (MAPK1 and MAPK3) may lie behind the antiangiogenic action of EGCG mediated by VEGFA. EGCG exerts protective effects against UV-induced damage to retinal cells and improves dysfunctional autophagy. EGCG may also interact with the mechanistic target rapamycin (MTOR) and unc-51-like autophagy activating kinase (ULK1) to modulate the interplay between autophagy and apoptosis. Several other studies report beneficial effects of EGCG on the retina that may be related to wet AMD. Therefore, controlled clinical trials are needed to verify whether diet supplementation with EGCG or green tea consumption may improve the results of anti-VEGFA therapy in wet AMD.
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Affiliation(s)
- Janusz Blasiak
- Department of Molecular Genetics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland
| | - Jan Chojnacki
- Department of Clinical Nutrition and Gastroenterological Diagnostics, Medical University of Lodz, 90-647 Lodz, Poland; (J.C.); (C.C.)
| | - Joanna Szczepanska
- Department of Pediatric Dentistry, Medical University of Lodz, 92-217 Lodz, Poland; (J.S.); (E.P.)
| | - Michal Fila
- Department of Developmental Neurology and Epileptology, Polish Mother’s Memorial Hospital Research Institute, 93-338 Lodz, Poland;
| | - Cezary Chojnacki
- Department of Clinical Nutrition and Gastroenterological Diagnostics, Medical University of Lodz, 90-647 Lodz, Poland; (J.C.); (C.C.)
| | - Kai Kaarniranta
- Department of Ophthalmology, University of Eastern Finland, 70210 Kuopio, Finland;
- Department of Ophthalmology, Kuopio University Hospital, 70210 Kuopio, Finland
| | - Elzbieta Pawlowska
- Department of Pediatric Dentistry, Medical University of Lodz, 92-217 Lodz, Poland; (J.S.); (E.P.)
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9
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Tira R, Viola G, Barracchia CG, Parolini F, Munari F, Capaldi S, Assfalg M, D'Onofrio M. Espresso Coffee Mitigates the Aggregation and Condensation of Alzheimer's Associated Tau Protein. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37466260 PMCID: PMC10401709 DOI: 10.1021/acs.jafc.3c01072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
Espresso coffee is among the most consumed beverages in the world. Recent studies report a protective activity of the coffee beverage against neurodegenerative disorders such as Alzheimer's disease. Alzheimer's disease belongs to a group of disorders, called tauopathies, which are characterized by the intraneuronal accumulation of the microtubule-associated protein tau in fibrillar aggregates. In this work, we characterized by NMR the molecular composition of the espresso coffee extract and identified its main components. We then demonstrated with in vitro and in cell experiments that the whole coffee extract, caffeine, and genistein have biological properties in preventing aggregation, condensation, and seeding activity of the repeat region of tau. We also identified a set of coffee compounds capable of binding to preformed tau fibrils. These results add insights into the neuroprotective potential of espresso coffee and suggest candidate molecular scaffolds for designing therapies targeting monomeric or fibrillized forms of tau.
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Affiliation(s)
- Roberto Tira
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 34134 Verona, Italy
| | - Giovanna Viola
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 34134 Verona, Italy
| | | | - Francesca Parolini
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 34134 Verona, Italy
| | - Francesca Munari
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 34134 Verona, Italy
| | - Stefano Capaldi
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 34134 Verona, Italy
| | - Michael Assfalg
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 34134 Verona, Italy
| | - Mariapina D'Onofrio
- Department of Biotechnology, University of Verona, Strada le Grazie 15, 34134 Verona, Italy
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10
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Sousa-Filho CPB, Silva V, Bolin AP, Rocha ALS, Otton R. Green tea actions on miRNAs expression – An update. Chem Biol Interact 2023; 378:110465. [PMID: 37004950 DOI: 10.1016/j.cbi.2023.110465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/17/2023] [Accepted: 03/28/2023] [Indexed: 04/01/2023]
Abstract
Compounds derived from plants have been widely studied in the context of metabolic diseases and associated clinical conditions. In this regard, although the effects of Camellia sinensis plant, from which various types of teas, such as green tea, originate, have been vastly reported in the literature, the mechanisms underlying these effects remain elusive. A deep search of the literature showed that green tea's action in different cells, tissues, and diseases is an open field in the research of microRNAs (miRNAs). miRNAs are important communicator molecules between cells in different tissues implicated in diverse cellular pathways. They have emerged as an important linkage between physiology and pathophysiology, raising the issue of polyphenols can act also by changing miRNA expression. miRNAs are short, non-coding endogenous RNA, which silence the gene functions by targeting messenger RNA (mRNA) through degradation or translation repression. Therefore, the aim of this review is to present the studies that show the main compounds of green tea modulating the expression of miRNAs in inflammation, adipose tissue, skeletal muscle, and liver. We provide an overview of a few studies that have tried to demonstrate the role of miRNAs associated with the beneficial effects of compounds from green tea. We have emphasized that there is still a considerable gap in the literature investigating the role and likely involvement of miRNAs in the extensive beneficial health effects of green tea compounds already described, indicating miRNAs as potential polyphenols' mediators with a promising field to be investigated.
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Affiliation(s)
| | - Victoria Silva
- Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil
| | - Anaysa Paola Bolin
- Department of Pharmacology, Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil
| | | | - Rosemari Otton
- Interdisciplinary Post-graduate Program in Health Sciences, Cruzeiro do Sul University, São Paulo, Brazil.
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11
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Chen H, Zhang X, Jiang R, Ouyang J, Liu Q, Li J, Wen H, Li Q, Chen J, Xiong L, Huang J, Liu Z. Characterization of aroma differences on three drying treatments in Rucheng Baimao (Camellia pubescens) white tea. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023]
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12
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Wang ZM, Chen B, Zhou B, Zhao D, Wang LS. Green tea consumption and the risk of stroke: A systematic review and meta-analysis of cohort studies. Nutrition 2023; 107:111936. [PMID: 36599267 DOI: 10.1016/j.nut.2022.111936] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/22/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Epidemiologic studies are inconsistent regarding the association between green tea consumption and the risk of stroke. We performed a meta-analysis to determine whether an association exists between them in cohort studies. METHODS We searched the PubMed and Embase databases for studies conducted from 1966 through September 2022. Prospective cohort studies that provided relative risk (RR) estimates with 95% confidence interval (CI)s for the association were included. Study-specific risk estimates were combined by using a random-effects model. RESULTS A total of five studies, with 11 421 stroke cases among 645 393 participants, were included in the meta-analysis. The summary RR indicated a significant association between highest green tea consumption and reduced risk of stroke (summary RR: 0.74; 95% CI, 0.66-0.83). In the dose-response analysis, we observed a nonlinear association between green tea consumption and the risk of stroke (P for nonlinearity = 0.0000). Compared with non-consumers, the RRs (95% CI) of stroke across levels of green tea consumption were 0.91 (0.89-0.94) for 150 mL/d, 0.84 (0.80-0.89) for 300 mL/d, 0.79 (0.74-0.84) for 500 mL/d, 0.77 (0.72-0.82) for 900 mL/d, and 0.84 (0.77-0.91) for 1500 mL/d. CONCLUSIONS This meta-analysis suggests that green tea consumption is inversely associated with the risk of stroke, especially among those with moderate consumption. Our results support recommendations for green tea consumption to the primary prevention of stroke.
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Affiliation(s)
- Ze-Mu Wang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Bei Chen
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Bo Zhou
- Jiangsu Center for Safety Evaluation of Drugs, School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, Jiangsu Province, China
| | - Di Zhao
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Lian-Sheng Wang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China.
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13
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Baranova A, Song Y, Cao H, Yue W, Zhang F. Causal associations of tea intake with COVID-19 infection and severity. Front Nutr 2023; 9:1005466. [PMID: 36687732 PMCID: PMC9848307 DOI: 10.3389/fnut.2022.1005466] [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: 07/28/2022] [Accepted: 11/18/2022] [Indexed: 01/05/2023] Open
Abstract
Tea ingredients can effectively inhibit SARS-CoV-2 infection at adequate concentrations. It is not known whether tea intake could impact the susceptibility to COVID-19 or its severity. We aimed to evaluate the causal effects of tea intake on COVID-19 outcomes. We performed Mendelian randomization (MR) analyses to assess the causal associations between tea intake (N = 441,279) and three COVID-19 outcomes, including SARS-CoV-2 infection (122,616 cases and 2,475,240 controls), hospitalized COVID-19 (32,519 cases and 2,062,805 controls), and critical COVID-19 (13,769 cases and 1,072,442 controls). The MR analyses indicated that genetic propensity for tea consumption conferred a negative causal effect on the risk of SARS-CoV-2 infection (OR: 0.87, 95% confidence interval (CI): 0.78-0.97, P = 0.015). No causal effects on hospitalized COVID-19 (0.84, 0.64-1.10, P = 0.201) or critical COVID-19 (0.73, 0.51-1.03, P = 0.074) were detected. Our study revealed that tea intake could decrease the risk of SARS-CoV-2 infection, highlighting the potential preventive effect of tea consumption on COVID-19 transmission.
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Affiliation(s)
- Ancha Baranova
- School of Systems Biology, George Mason University, Manassas, VA, United States,Research Centre for Medical Genetics, Moscow, Russia
| | - Yuqing Song
- Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China
| | - Hongbao Cao
- School of Systems Biology, George Mason University, Manassas, VA, United States
| | - Weihua Yue
- Peking University Sixth Hospital/Institute of Mental Health, Beijing, China,NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, China,PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China,Chinese Institute for Brain Research, Beijing, China
| | - Fuquan Zhang
- Institute of Neuropsychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China,Department of Psychiatry, The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, China,*Correspondence: Fuquan Zhang ✉
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14
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Wang N, Lan C, Lu H, Li L, Liao D, Xu K, Sun H, Tang Y, Wang Y, Mei J, Wei M, Wu T, Zhu H. Preventive effect and mechanism of Tibetan tea extract on thrombosis in arachidonic acid-induced zebrafish determined via RNA-seq transcriptome profiles. PLoS One 2023; 18:e0285216. [PMID: 37205684 DOI: 10.1371/journal.pone.0285216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 04/17/2023] [Indexed: 05/21/2023] Open
Abstract
Thrombosis is a key pathological event in cardiovascular diseases and is also the most important targeting process for their clinical management. In this study, arachidonic acid (AA) was used to induce thrombus formation in zebrafish larvae. Blood flow, red blood cell (RBCs) aggregation and cellular oxidative stress were measured to evaluate the antithrombotic effect of Tibetan tea (TT). Meanwhile, the potential molecular mechanism was further explored by transcriptome sequencing (RNA-seq). The results indicated that TT could significantly restore heart RBCs intensity of thrombotic zebrafish, whilst decreasing RBCs accumulation in the caudal vein. The transcriptome analysis revealed that the preventive effect of TT on thrombosis could be mostly attributed to changes in lipid metabolism related signaling pathways, such as fatty acid metabolism, glycerollipid metabolism, ECM-receptor interaction and steroid biosynthesis signaling pathway. This study demonstrated that Tibetan tea could alleviate thrombosis by reducing oxidative stress levels and regulating lipid metabolism.
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Affiliation(s)
- Ning Wang
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong, China
- Luzhou Laojiao Co. Ltd, Luzhou, PR China
- College of Horticulture, Hunan Agricultural University, Changsha, China
- Chengdu Chongqing Shuangcheng Economic Circle (Luzhou) Advanced Technology Research Institute, Luzhou, China
| | - Chaohua Lan
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong, China
| | - Huiqiang Lu
- Center for Drug Screening and Research, School of Geography and Environmental Engineering, Gannan Normal University, Ganzhou, China
| | - Linman Li
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong, China
| | - Dalong Liao
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong, China
| | - Kewei Xu
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong, China
| | - Haiyan Sun
- Chengdu Chongqing Shuangcheng Economic Circle (Luzhou) Advanced Technology Research Institute, Luzhou, China
| | - Yongqing Tang
- Chengdu Chongqing Shuangcheng Economic Circle (Luzhou) Advanced Technology Research Institute, Luzhou, China
| | - Yumeng Wang
- Bristol Myers Squibb, Princeton, NJ, United States of America
| | - Jie Mei
- Sichuan Jixiang Tea Co., Ltd., Ya'an, China
| | - Mengting Wei
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong, China
| | - Tao Wu
- School of Food and Biological Engineering, Xihua University, Chengdu, China
| | - Hui Zhu
- College of Bioengineering, Sichuan University of Science and Engineering, Zigong, China
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15
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Biasioli A, Xholli A, Previtera F, Balzano A, Capodicasa V, Tassi A, Londero AP, Cagnacci A. Systemic Oxidative Stress in Women with Ovarian and Pelvic Endometriosis: Role of Hormonal Therapy. J Clin Med 2022; 11:jcm11247460. [PMID: 36556076 PMCID: PMC9781540 DOI: 10.3390/jcm11247460] [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: 11/18/2022] [Revised: 12/12/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
This study was performed to evaluate the systemic oxidative stress balance in women with either ovarian or deep infiltrating endometriosis (DIE) and any alterations of the same during hormone therapy. Free oxygen radicals (FORT) and free oxidant radical defense (FORD) were measured in the capillary blood of 24 women without endometriosis, 26 women with endometrioma, and 26 women with DIE with or without endometrioma. Endometriosis was diagnosed by clinical and ultrasound assessment. Dietary factors, lifestyle habits, and intake of any substances interfering with the oxidative status were recorded. Women were prescribed contraceptive hormones, and the baseline assessments were repeated at the 3rd month of use, revealing a higher oxidative stress balance (FORT/FORD) in women with endometriosis than in controls (4.75 ± 4.4 vs. 2.79 ± 2.2; p = 0.05). The highest values were found in women with DIE (5.34 ± 4.6; p = 0.028 vs. controls). Regression analysis revealed an independent link between FORT/FORD and endometrioma (b 2.874, 95% CI 0.345, 5.403; p = 0.027) and DIE (b 4.419, 95% CI 1.775, 7.064; p = 0.001) but a negative correlation with HDL-cholesterol (b -0.063, 95% CI -0.125, -0.002; p = 0.043). In controls, the hormone therapy increased FORT (p = 0.003), but also FORD (p = 0.012), with the FORT/FORD balance remaining stable (2.72 ± 2.2 vs. 2.73 ± 1.8; p = 0.810). In women with endometriosis, FORT remained unchanged, but FORD increased (p = 0.004), and the FORT/FORD ratio significantly decreased (4.75 ± 4.4 vs. 2.57 ± 1.76; p = 0.002) to values similar to the control levels. These data indicate that systemic oxidative stress balance increased in women with endometriosis, particularly in those with DIE. The hormonal therapy did not change the oxidative stress balance in control women but significantly improved it in women with endometriosis, particularly those suffering from DIE.
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Affiliation(s)
- Anna Biasioli
- Obstetrics and Gynecology Teaching Unit, S. Maria della Misericordia Hospital, 33100 Udine, Italy
| | - Anjeza Xholli
- Obstetrics and Gynecology Teaching Unit, IRCCS Ospedale San Martino, 16132 Genoa, Italy
| | - Francesca Previtera
- Obstetrics and Gynecology Teaching Unit, S. Maria della Misericordia Hospital, 33100 Udine, Italy
| | - Alessandro Balzano
- Obstetrics and Gynecology Teaching Unit, S. Maria della Misericordia Hospital, 33100 Udine, Italy
| | - Valentina Capodicasa
- Obstetrics and Gynecology Teaching Unit, S. Maria della Misericordia Hospital, 33100 Udine, Italy
| | - Alice Tassi
- Obstetrics and Gynecology Teaching Unit, S. Maria della Misericordia Hospital, 33100 Udine, Italy
| | - Ambrogio P. Londero
- Department of Neurology, Rehabilitation, Ophthalmology, Genetics, Maternal and Infant Health (DiNOGMI), University of Genoa, 16132 Genoa, Italy
| | - Angelo Cagnacci
- Obstetrics and Gynecology Teaching Unit, IRCCS Ospedale San Martino, 16132 Genoa, Italy
- Department of Neurology, Rehabilitation, Ophthalmology, Genetics, Maternal and Infant Health (DiNOGMI), University of Genoa, 16132 Genoa, Italy
- Correspondence:
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16
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Liu T, Wang J, Du MR, Wang YS, Fang X, Peng H, Shi QS, Xie XB, Zhou G. The interplays between epigallocatechin-3-gallate (EGCG) and Aspergillus niger RAF106 based on metabolism. Fungal Biol 2022; 126:727-737. [PMID: 36517140 DOI: 10.1016/j.funbio.2022.09.001] [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: 04/22/2022] [Revised: 08/21/2022] [Accepted: 09/03/2022] [Indexed: 01/07/2023]
Abstract
Epigallocatechin-3-gallate (EGCG) is a vital kind of catechin with high bioactive activities, however, limited research has been conducted to elucidate the molecular basis of EGCG biotransformation by Aspergillus niger and the underlying regulatory mechanisms. In this study, A. niger RAF106, isolated from Pu-erh tea, was applied to conduct the EGCG fermentation process, and the samples were collected at different fermentation times to determine the intermediary metabolites of EGCG and the metabolome as well as physiological activity changes of A. niger RAF106. The results demonstrated that EGCG enhances the growth of A. niger RAF106 by promoting conidial germination and hyphae branching. Meanwhile, metabolomic analyses indicated that EGCG significantly regulates the amino acid metabolism of A. niger RAF106. Furthermore, metabolomic analyses also revealed that the levels of original secondary metabolites in the supernatant of the cultures changed significantly from the fermentation stage M2 to M3, in which the main differentially changed metabolites (DCMs) were flavonoids. Most of these flavonoids exhibited antioxidant properties and thus increased the radical scavenging activity of the supernatant of the cultures. In addition, we also found several intermediary metabolites of EGCG, GA, and EGC, including oolonghomobisflavan A, (-)-Epigallocatechin 3, 5-di-gallate, (-)-Epigallocatechin 3-(3-methyl-gallate) (-)-Catechin 3-O-gallate, 4'-Methyl-(-)-epigallocatechin 3-(4-methyl-gallate), myricetin, prodelphinidin B, 7-galloylcatechin, and 3-hydroxyphenylacetic acid. These findings contribute to improving the bioavailability of EGCG and help mine highly active metabolites, which can be used as raw materials for the development of pharmaceutical intermediates or functional foods. In addition, the results also provide a theoretical basis for better control of the risk of A. niger origin and the regulatory mechanisms of the biotransformation process mediated by A. niger.
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Affiliation(s)
- Tong Liu
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China; Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Jie Wang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Min-Ru Du
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Ying-Si Wang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China.
| | - Xiang Fang
- Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Hong Peng
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China.
| | - Qing-Shan Shi
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China; Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Xiao-Bao Xie
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China; Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
| | - Gang Zhou
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, 510070, PR China; Guangdong Provincial Key Laboratory of Nutraceuticals and Functional Foods, College of Food Science, South China Agricultural University, Guangzhou, Guangdong, 510642, PR China.
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17
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Huang S, Chen H, Teng J, Wu Z, Huang L, Wei B, Xia N. Antihyperlipidemic effect and increased antioxidant enzyme levels of aqueous extracts from Liupao tea and green tea in vivo. J Food Sci 2022; 87:4203-4220. [PMID: 35982642 DOI: 10.1111/1750-3841.16274] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 06/17/2022] [Accepted: 07/12/2022] [Indexed: 12/16/2022]
Abstract
Liupao tea (fermented dark tea) may improve the active function of hyperlipidemia. Utilizing a hyperlipidemia Sprague-Dawley model and UPLC-MS/MS metabolomics, we examined how the effect of Liupao and green tea extracts on hyperlipidemia and antoxidant enzyme levels and compared their constituents. The results showed that the two types of tea could reduce the levels of total cholesterol (TC), total triglyceride, and low-density lipoprotein cholesterol (LDL-C); increase the contents of bile acids and cholesterol in feces; and improve catalase and glutathione peroxidase (GSH-Px) activities. Compared with the model control group, Liupao tea effectively reduced TC and LDL-C levels by 39.53% and 58.55% and increased GSH-Px activity in the liver by 67.07%, which was better than the effect of green tea. A total of 93 compounds were identified from two samples; the amounts of alkaloids and fatty acids increased compared with green tea, and ellagic acid, hypoxanthine, and theophylline with relatively high contents in Liupao tea had a significantly positive correlation with antihyperlipidemic and antioxidant effects. Therefore, Liupao tea had better antihyperlipidemic and antioxidant activities in vivo than green tea, which might be related to the relatively high content of some active substances.
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Affiliation(s)
- Shuoyuan Huang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Huan Chen
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Jianwen Teng
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Zhengmei Wu
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Li Huang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Baoyao Wei
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Ning Xia
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
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18
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Ntamo Y, Jack B, Ziqubu K, Mazibuko-Mbeje SE, Nkambule BB, Nyambuya TM, Mabhida SE, Hanser S, Orlando P, Tiano L, Dludla PV. Epigallocatechin gallate as a nutraceutical to potentially target the metabolic syndrome: novel insights into therapeutic effects beyond its antioxidant and anti-inflammatory properties. Crit Rev Food Sci Nutr 2022; 64:87-109. [PMID: 35916835 DOI: 10.1080/10408398.2022.2104805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Epigallocatechin gallate (EGCG) is one of the most abundant and powerful flavonoids contained in green tea. Because of the global increase in green tea consumption, there has been a general interest in understanding its health benefits, including its bioactive compounds like EGCG. Indeed, preclinical evidence already indicates that EGCG demonstrated a strong antioxidant and anti-inflammatory properties that could be essential in protecting against metabolic syndrome. The current review explores clinical evidence reporting on the beneficial effects of EGCG supplementation in obese subjects or patients with diverse metabolic complications that include type 2 diabetes and cardiovascular disease. The discussion incorporates the impact of different formulations of EGCG, as well as the effective doses and treatment duration. Importantly, besides highlighting the potential use of EGCG as a nutraceutical, the current review also discusses crucial evidence related to its pharmaceutical development as an agent to hinder metabolic diseases, including its bioavailability and metabolism profile, as well as its well-known biological properties.
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Affiliation(s)
- Yonela Ntamo
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa
| | - Babalwa Jack
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa
| | - Khanyisani Ziqubu
- Department of Biochemistry, North-West University, Mmabatho, South Africa
| | | | - Bongani B Nkambule
- School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Tawanda M Nyambuya
- Department of Health Sciences, Namibia University of Science and Technology, Windhoek, Namibia
| | - Sihle E Mabhida
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa
| | - Sidney Hanser
- Department of Physiology and Environmental Health, University of Limpopo, Sovenga, South Africa
| | - Patrick Orlando
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Luca Tiano
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, Italy
| | - Phiwayinkosi V Dludla
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg, South Africa
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, South Africa
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19
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Zhou H, Sun F, Lin H, Fan Y, Wang C, Yu D, Liu N, Wu A. Food bioactive compounds with prevention functionalities against fungi and mycotoxins: developments and challenges. Curr Opin Food Sci 2022. [DOI: 10.1016/j.cofs.2022.100916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Zhang XH, Zheng JJ, Qing XD, Lin F, Yuan YT, Yang KL, Zhang JZ, Gu HW. Extraction and determination of phenolic compounds in Chinese teas using a novel compound salt aqueous two-phase system coupled with multivariate chemometric methods. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113477] [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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21
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Kikuchi H, Harata K, Akiyoshi S, Sagara T, Madhyastha H, Kuribayashi F. Potential role of green tea amino acid L-theanine in activation of innate immune response via enhancing expression of cytochrome b 558 responsible for the reactive oxygen species-generating ability of leukocytes. Microbiol Immunol 2022; 66:342-349. [PMID: 35338668 DOI: 10.1111/1348-0421.12977] [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: 02/15/2022] [Revised: 03/18/2022] [Accepted: 03/23/2022] [Indexed: 11/28/2022]
Abstract
L-Theanine (N-ethyl-L-glutamine) is an analog of L-glutamine and L-glutamic acid, accounts for up to 50% of all free amino acids in green tea, and elicits an umami taste. Since L-theanine also shows various physiological activities including immune response-modifying activities, it is expected as an excellent health-promoting phytochemical agent. To know the influences of L-theanine on the human innate immune response, we investigated the effect of L-theanine on the superoxide anion (O2 - )-generating system of leukocytes using U937 cells. The O2 - -generating system in leukocytes is consisted of membrane cytochrome b 558 protein (a complex of p22-phox and gp91-phox proteins) and cytosolic p40-phox, p47-phox and p67-phox proteins. Addition of 500 μM L-theanine caused remarkable enhancement of the all-trans retinoic acid (ATRA)-induced O2 - -generating activity (to ~470% of ATRA-treated cells), but not L-glutamine and L-glutamic acid. Semiquantitative RT-PCR showed that the transcription level of gp91-phox is significantly increased in ATRA and L-theanine-cotreated cells. Chromatin immunoprecipitation assay revealed that L-theanine enhances acetylations of Lys-9 and Lys-14 residues of histone H3 within chromatin surrounding the promoter region of gp91-phox gene. Immunoblotting demonstrated that membrane cytochrome b 558 proteins remarkably accumulate in ATRA plus L-theanine-treated cells. These results suggested that L-theanine brings about remarkable accumulation of cytochrome b 558 protein via up-regulating the transcription of gp91-phox gene during leukocyte differentiation, resulting in marked augmentation of the O2 - -generating ability, which is one of the most important functions of leukocytes responsible for the innate immune system. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Hidehiko Kikuchi
- Department of Food and Nutrition, Shokei University Junior College, 2-6-78 Kuhonji, Chuo-ku, Kumamoto, 862-8678, Japan
| | - Kaori Harata
- Department of Food and Nutrition, Shokei University Junior College, 2-6-78 Kuhonji, Chuo-ku, Kumamoto, 862-8678, Japan
| | - Sumiko Akiyoshi
- Department of Food and Nutrition, Shokei University Junior College, 2-6-78 Kuhonji, Chuo-ku, Kumamoto, 862-8678, Japan
| | - Takefumi Sagara
- Department of Food and Nutrition, Shokei University Junior College, 2-6-78 Kuhonji, Chuo-ku, Kumamoto, 862-8678, Japan
| | - Harishkumar Madhyastha
- Department of Applied Physiology, Faculty of Medicine, University of Miyazaki, 5200, Kihara, Kiyotake, Miyazaki, 889-1692, Japan
| | - Futoshi Kuribayashi
- Department of Biochemistry, Kawasaki Medical School, Kurashiki, Okayama, 701-0192, Japan
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22
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Pan SY, Nie Q, Tai HC, Song XL, Tong YF, Zhang LJF, Wu XW, Lin ZH, Zhang YY, Ye DY, Zhang Y, Wang XY, Zhu PL, Chu ZS, Yu ZL, Liang C. Tea and tea drinking: China's outstanding contributions to the mankind. Chin Med 2022; 17:27. [PMID: 35193642 PMCID: PMC8861626 DOI: 10.1186/s13020-022-00571-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 01/07/2022] [Indexed: 02/06/2023] Open
Abstract
Background Tea trees originated in southwest China 60 million or 70 million years ago. Written records show that Chinese ancestors had begun drinking tea over 3000 years ago. Nowadays, with the aging of populations worldwide and more people suffering from non-communicable diseases or poor health, tea beverages have become an inexpensive and fine complementary and alternative medicine (CAM) therapy. At present, there are 3 billion people who like to drink tea in the world, but few of them actually understand tea, especially on its development process and the spiritual and cultural connotations. Methods We searched PubMed, Google Scholar, Web of Science, CNKI, and other relevant platforms with the key word “tea”, and reviewed and analyzed tea-related literatures and pictures in the past 40 years about tea’s history, culture, customs, experimental studies, and markets. Results China is the hometown of tea, tea trees, tea drinking, and tea culture. China has the oldest wild and planted tea trees in the world, fossil of a tea leaf from 35,400,000 years ago, and abundant tea-related literatures and art works. Moreover, tea may be the first Chinese herbal medicine (CHM) used by Chinese people in ancient times. Tea drinking has many benefits to our physical health via its antioxidant, anti-inflammatory, immuno-regulatory, anticancer, cardiovascular-protective, anti-diabetic, and anti-obesity activities. At the moment, COVID-19 is wreaking havoc across the globe and causing severe damages to people’s health and lives. Tea has anti-COVID-19 functions via the enhancement of the innate immune response and inhibition of viral growth. Besides, drinking tea can allow people to acquire a peaceful, relaxed, refreshed and cheerful enjoyment, and even longevity. According to the meridian theory of traditional Chinese medicine, different kinds of tea can activate different meridian systems in the human body. At present, black tea (fermented tea) and green tea (non-fermented tea) are the most popular in the world. Black tea accounts for over 90% of all teas sold in western countries. The world’s top-grade black teas include Qi Men black in China, Darjeeling and Assam black tea in India, and Uva black tea in Sri Lanka. However, all top ten famous green teas in the world are produced in China, and Xi Hu Long Jing tea is the most famous among all green teas. More than 700 different kinds of components and 27 mineral elements can be found in tea. Tea polyphenols and theaflavin/thearubigins are considered to be the major bioactive components of black tea and green tea, respectively. Overly strong or overheated tea liquid should be avoided when drinking tea. Conclusions Today, CAM provides an array of treatment modalities for the health promotion in both developed and developing countries all over the world. Tea drinking, a simple herb-based CAM therapy, has become a popular man-made non-alcoholic beverage widely consumed worldwide, and it can improve the growth of economy as well. Tea can improve our physical and mental health and promote the harmonious development of society through its chemical and cultural elements.
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Affiliation(s)
- Si-Yuan Pan
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China. .,School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China.
| | - Qu Nie
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China
| | - Hai-Chuan Tai
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China
| | - Xue-Lan Song
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China
| | - Yu-Fan Tong
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China
| | - Long-Jian-Feng Zhang
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China
| | - Xue-Wei Wu
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China
| | - Zhao-Heng Lin
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China
| | - Yong-Yu Zhang
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China
| | - Du-Yun Ye
- School of Traditional Dai-Thai Medicine, West Yunnan University of Applied Sciences, Jinghong, Yunnan, China
| | - Yi Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Xiao-Yan Wang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Pei-Li Zhu
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Zhu-Sheng Chu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Zhi-Ling Yu
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Chun Liang
- Division of Life Science, Center for Cancer Research, and State Key Lab of Molecular Neuroscience, Hong Kong University of Science and Technology, Hong Kong, China. .,EnKang Pharmaceuticals (Guangzhou) Ltd, Guangzhou, China.
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23
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García-Caballero M, Torres-Vargas JA, Marrero AD, Martínez-Poveda B, Medina MÁ, Quesada AR. Angioprevention of Urologic Cancers by Plant-Derived Foods. Pharmaceutics 2022; 14:pharmaceutics14020256. [PMID: 35213989 PMCID: PMC8875200 DOI: 10.3390/pharmaceutics14020256] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 01/16/2022] [Accepted: 01/18/2022] [Indexed: 02/05/2023] Open
Abstract
The number of cancer cases worldwide keeps growing unstoppably, despite the undeniable advances achieved by basic research and clinical practice. Urologic tumors, including some as prevalent as prostate, bladder or kidney tumors, are no exceptions to this rule. Moreover, the fact that many of these tumors are detected in early stages lengthens the duration of their treatment, with a significant increase in health care costs. In this scenario, prevention offers the most cost-effective long-term strategy for the global control of these diseases. Although specialized diets are not the only way to decrease the chances to develop cancer, epidemiological evidence support the role of certain plant-derived foods in the prevention of urologic cancer. In many cases, these plants are rich in antiangiogenic phytochemicals, which could be responsible for their protective or angiopreventive properties. Angiogenesis inhibition may contribute to slow down the progression of the tumor at very different stages and, for this reason, angiopreventive strategies could be implemented at different levels of chemoprevention, depending on the targeted population. In this review, epidemiological evidence supporting the role of certain plant-derived foods in urologic cancer prevention are presented, with particular emphasis on their content in bioactive phytochemicals that could be used in the angioprevention of cancer.
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Affiliation(s)
- Melissa García-Caballero
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Malaga, Andalucía Tech, E-29071 Malaga, Spain; (M.G.-C.); (J.A.T.-V.); (A.D.M.); (B.M.-P.); (M.Á.M.)
- IBIMA (Biomedical Research Institute of Malaga), E-29071 Malaga, Spain
| | - José Antonio Torres-Vargas
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Malaga, Andalucía Tech, E-29071 Malaga, Spain; (M.G.-C.); (J.A.T.-V.); (A.D.M.); (B.M.-P.); (M.Á.M.)
- IBIMA (Biomedical Research Institute of Malaga), E-29071 Malaga, Spain
| | - Ana Dácil Marrero
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Malaga, Andalucía Tech, E-29071 Malaga, Spain; (M.G.-C.); (J.A.T.-V.); (A.D.M.); (B.M.-P.); (M.Á.M.)
- IBIMA (Biomedical Research Institute of Malaga), E-29071 Malaga, Spain
| | - Beatriz Martínez-Poveda
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Malaga, Andalucía Tech, E-29071 Malaga, Spain; (M.G.-C.); (J.A.T.-V.); (A.D.M.); (B.M.-P.); (M.Á.M.)
- IBIMA (Biomedical Research Institute of Malaga), E-29071 Malaga, Spain
- CIBER de Enfermedades Cardiovasculares (CIBERCV), E-28019 Madrid, Spain
| | - Miguel Ángel Medina
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Malaga, Andalucía Tech, E-29071 Malaga, Spain; (M.G.-C.); (J.A.T.-V.); (A.D.M.); (B.M.-P.); (M.Á.M.)
- IBIMA (Biomedical Research Institute of Malaga), E-29071 Malaga, Spain
- CIBER de Enfermedades Raras (CIBERER), E-29071 Malaga, Spain
| | - Ana R. Quesada
- Department of Molecular Biology and Biochemistry, Faculty of Sciences, University of Malaga, Andalucía Tech, E-29071 Malaga, Spain; (M.G.-C.); (J.A.T.-V.); (A.D.M.); (B.M.-P.); (M.Á.M.)
- IBIMA (Biomedical Research Institute of Malaga), E-29071 Malaga, Spain
- CIBER de Enfermedades Raras (CIBERER), E-29071 Malaga, Spain
- Correspondence:
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Fang X, Dong S, Xin Z, He W, Zhang Y, Xiong J, Wang J, Zhenlin L, Wang L, Zhong Q, Hong W. Correlation between green tea polyphenols regulating intestinal bacteriophage and flora diversity in SPF mice. Food Funct 2022; 13:2952-2965. [DOI: 10.1039/d1fo03694g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Green tea polyphenols (GTP) play an important role in shaping the gut microbiome, comprising of a range of densely colonizing microorganisms, including bacteriophages. Previous studies focused on the effect of...
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25
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Sun CP, Tian XG, Feng L, Wang C, Li JX, Huo XK, Zhao WY, Ning J, Yu ZL, Deng S, Zhang BJ, Lv X, Hou J, Ma XC. Inhibition of gut bacterial β-glucuronidase by chemical components from black tea: Inhibition interactions and molecular mechanism. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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26
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Zhao L, Sun QY, Ge ZJ. Potential role of tea extract in oocyte development. Food Funct 2021; 12:10311-10323. [PMID: 34610081 DOI: 10.1039/d1fo01725j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tea is the second most popular beverage in the world and beneficial to health. It has been demonstrated that tea polyphenols can reduce the risk of diseases, such as cancers, diabetes, obesity, Alzheimer's disease, etc. But the knowledge of tea extract on the female germline is limited. Folliculogenesis is a complicated process and prone to be affected by ROS. Tea polyphenols can reduce the accumulation of ROS in folliculogenesis and affect oocyte maturation. Tea extract also influences granulosa cell proliferation and expansion during oocyte growth and maturation. However, the studies about the benefits of tea extract on female germline are few, and the underlying mechanisms are obscure. In the present study, we will mainly discuss the effects of tea extract on ovarian function, oocyte maturation, and the underlying possible mechanisms, and according to the discussion, we suggest that tea extract may have benefits for oocytes at an appropriate dose.
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Affiliation(s)
- Lei Zhao
- College of Horticulture, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Qing-Yuan Sun
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao, P.R. China. .,Fertility Preservation Lab and Guangdong-Hong Kong Metabolism & Reproduction Joint Laboratory, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou 510317, China
| | - Zhao-Jia Ge
- College of Life Sciences, Institute of Reproductive Sciences, Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, Qingdao Agricultural University, Qingdao, P.R. China.
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27
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Yang Y, Chen SL, Xu Y, Yao Y, Liang JJ, Wang L, Jhanji V, Sun X, Ma D, Ng TK. Green Tea Catechins Attenuate Human Primary Pterygium Cell Survival and Migration Via Modulation of ERK p42/p44 and p38 Pathways. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:12209-12218. [PMID: 34610737 DOI: 10.1021/acs.jafc.1c04422] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Pterygium belongs to an ocular surface disease with triangular-shaped hyperplastic growth, characterized by conjunctivalization, inflammation, and connective tissue remodeling. We previously demonstrated neoplastic-like properties of pterygium cells. Green tea catechin, (-)-epigallocatechin gallate (EGCG), has been shown to possess antitumorigenic properties; herein, we aimed to determine the effects of green tea catechins on human primary pterygium cell survival and migration and compared to that on patients' conjunctival cells. Both human primary pterygium and conjunctival cells expressed EGCG receptor, the 67 kDa laminin receptor. Seven-day treatment of green tea extract (Theaphenon E; 16.25 μg/mL) and EGCG (25 μM) attenuated pterygium cell proliferation by 16.78% (p < 0.001) and 24.09% (p < 0.001) respectively, without significantly influencing conjunctival cells. Moreover, green tea extract (16.25 μg/mL) and EGCG (25 μM) treatments also hindered pterygium cell migration by 35.22% (p < 0.001) and 25.20% (p = 0.019), respectively, but not conjunctival cells. Yet, green tea extract and EGCG treatments did not significantly induce pterygium cell apoptosis. Furthermore, green tea extract and EGCG treatments significantly increased the phosphorylation of p38 protein but reduced the phosphorylation of p42/p44 protein in pterygium cells. In summary, this study revealed that green tea extract and EGCG attenuated human primary pterygium cell survival and migration in vitro without damaging conjunctival cells, suggesting a novel potential therapeutic approach for primary pterygium treatment.
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Affiliation(s)
- Yaping Yang
- Department of Ophthalmology and Visual Science, Eye and Ear Nose Throat Hospital, Shanghai Medical College, Fudan University, Shanghai 200433, China
- Key Laboratory of Myopia, Ministry of Health, Fudan University, Shanghai 200433, China
- Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai 200433, China
| | - Shao-Lang Chen
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, North Dongxia Road, Shantou 515041, Guangdong, China
| | - Yanxuan Xu
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, North Dongxia Road, Shantou 515041, Guangdong, China
| | - Yao Yao
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, North Dongxia Road, Shantou 515041, Guangdong, China
- Shantou University Medical College, Shantou 515063, Guangdong, China
| | - Jia-Jian Liang
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, North Dongxia Road, Shantou 515041, Guangdong, China
| | - Li Wang
- Department of Ophthalmology and Visual Science, Eye and Ear Nose Throat Hospital, Shanghai Medical College, Fudan University, Shanghai 200433, China
- Key Laboratory of Myopia, Ministry of Health, Fudan University, Shanghai 200433, China
- Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai 200433, China
| | - Vishal Jhanji
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Kowloon, Hong Kong
- Department of Ophthalmology, UPMC Eye Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15213, United States
| | - Xinghuai Sun
- Department of Ophthalmology and Visual Science, Eye and Ear Nose Throat Hospital, Shanghai Medical College, Fudan University, Shanghai 200433, China
- Key Laboratory of Myopia, Ministry of Health, Fudan University, Shanghai 200433, China
- Key Laboratory of Visual Impairment and Restoration, Fudan University, Shanghai 200433, China
- State Key Laboratory of Medical Neurobiology, Institutes of Brain Science and Collaborative Innovation Center for Brain Science, Fudan University, Shanghai 200433, China
| | - Di Ma
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, North Dongxia Road, Shantou 515041, Guangdong, China
| | - Tsz Kin Ng
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, North Dongxia Road, Shantou 515041, Guangdong, China
- Shantou University Medical College, Shantou 515063, Guangdong, China
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Kowloon, Hong Kong
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28
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Pérez-Burillo S, Navajas-Porras B, López-Maldonado A, Hinojosa-Nogueira D, Pastoriza S, Rufián-Henares JÁ. Green Tea and Its Relation to Human Gut Microbiome. Molecules 2021; 26:molecules26133907. [PMID: 34206736 PMCID: PMC8271705 DOI: 10.3390/molecules26133907] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 06/22/2021] [Accepted: 06/23/2021] [Indexed: 12/14/2022] Open
Abstract
Green tea can influence the gut microbiota by either stimulating the growth of specific species or by hindering the development of detrimental ones. At the same time, gut bacteria can metabolize green tea compounds and produce smaller bioactive molecules. Accordingly, green tea benefits could be due to beneficial bacteria or to microbial bioactive metabolites. Therefore, the gut microbiota is likely to act as middle man for, at least, some of the green tea benefits on health. Many health promoting effects of green tea seems to be related to the inter-relation between green tea and gut microbiota. Green tea has proven to be able to correct the microbial dysbiosis that appears during several conditions such as obesity or cancer. On the other hand, tea compounds influence the growth of bacterial species involved in inflammatory processes such as the release of LPS or the modulation of IL production; thus, influencing the development of different chronic diseases. There are many studies trying to link either green tea or green tea phenolic compounds to health benefits via gut microbiota. In this review, we tried to summarize the most recent research in the area.
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Affiliation(s)
- Sergio Pérez-Burillo
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de los Alimentos, Centro de Investigación Biomédica, Universidad de Granada, 18071 Granada, Spain; (S.P.-B.); (B.N.-P.); (A.L.-M.); (D.H.-N.); (S.P.)
- Department of Biochemistry and Molecular Biology, Boonshoft School of Medicine, Wright State University, Dayton, OH 45435, USA
- Instituto de Investigación Biosanitaria ibs. GRANADA, Universidad de Granada, 18071 Granada, Spain
| | - Beatriz Navajas-Porras
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de los Alimentos, Centro de Investigación Biomédica, Universidad de Granada, 18071 Granada, Spain; (S.P.-B.); (B.N.-P.); (A.L.-M.); (D.H.-N.); (S.P.)
- Instituto de Investigación Biosanitaria ibs. GRANADA, Universidad de Granada, 18071 Granada, Spain
| | - Alicia López-Maldonado
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de los Alimentos, Centro de Investigación Biomédica, Universidad de Granada, 18071 Granada, Spain; (S.P.-B.); (B.N.-P.); (A.L.-M.); (D.H.-N.); (S.P.)
- Instituto de Investigación Biosanitaria ibs. GRANADA, Universidad de Granada, 18071 Granada, Spain
| | - Daniel Hinojosa-Nogueira
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de los Alimentos, Centro de Investigación Biomédica, Universidad de Granada, 18071 Granada, Spain; (S.P.-B.); (B.N.-P.); (A.L.-M.); (D.H.-N.); (S.P.)
- Instituto de Investigación Biosanitaria ibs. GRANADA, Universidad de Granada, 18071 Granada, Spain
| | - Silvia Pastoriza
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de los Alimentos, Centro de Investigación Biomédica, Universidad de Granada, 18071 Granada, Spain; (S.P.-B.); (B.N.-P.); (A.L.-M.); (D.H.-N.); (S.P.)
- Instituto de Investigación Biosanitaria ibs. GRANADA, Universidad de Granada, 18071 Granada, Spain
| | - José Ángel Rufián-Henares
- Departamento de Nutrición y Bromatología, Instituto de Nutrición y Tecnología de los Alimentos, Centro de Investigación Biomédica, Universidad de Granada, 18071 Granada, Spain; (S.P.-B.); (B.N.-P.); (A.L.-M.); (D.H.-N.); (S.P.)
- Instituto de Investigación Biosanitaria ibs. GRANADA, Universidad de Granada, 18071 Granada, Spain
- Correspondence: ; Tel.: +34-958-24-28-41
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