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Hammer KDP, Birt DF. Evidence for contributions of interactions of constituents to the anti-inflammatory activity of Hypericum perforatum. Crit Rev Food Sci Nutr 2014; 54:781-9. [PMID: 24345048 DOI: 10.1080/10408398.2011.607519] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Hypericum perforatum (Hp) extracts contain many different classes of constituents including flavonoids and biflavonoids, phloroglucinols, naphthodianthrones, caffeic acid derivatives, and unknown and/or unidentified compounds. Many constituents may be responsible for the anti-inflammatory activity of Hp including quercetin and derivatives, hyperforin, pseudohypericin, and amentoflavone. In line with antidepressant data, it appears that the interactions of constituents may be important for the anti-inflammatory activity of Hp. Interactions of constituents, tested in bioavailability models, may explain why synergistic mechanisms have been found to be important for antidepressant and antiproliferative bioactivities. This review highlights the relationship among individual constituents and the anti-inflammatory activity of Hp extracts and proposes that interactions of constituents may be important for the anti-inflammatory activity of botanical extracts, although the exact mechanisms of the interactions are still unclear.
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Affiliation(s)
- Kimberly D P Hammer
- a Center for Research on Botanical Dietary Supplements , Iowa State University , Ames , Iowa , USA
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Fujii TMDM, Jacob PS, Yamada M, Borges MC, Norde MM, Pantaleão LC, Oliveira DMD, Tirapegui J, Castro IAD, Borelli P, Fock RA, Rogero MM. Yerba Mate (Ilex paraguariensis) modulates NF-kappaB pathway and AKT expression in the liver of rats fed on a high-fat diet. Int J Food Sci Nutr 2014; 65:967-76. [DOI: 10.3109/09637486.2014.945153] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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103
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Lee HJ, Cha KH, Kim CY, Nho CW, Pan CH. Bioavailability of hydroxycinnamic acids from Crepidiastrum denticulatum using simulated digestion and Caco-2 intestinal cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:5290-5295. [PMID: 24841645 DOI: 10.1021/jf500319h] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Hydroxycinnamic acids have antioxidant properties and potentially beneficial effects on human health. This study investigated the digestive stability, bioaccessibility, and permeability of hydroxycinnamic acids from Crepidiastrum denticulatum using simulated digestion and Caco-2 intestinal cells. The major compounds of C. denticulatum were determined to be four hydroxycinnamic acids [caftaric acid, chlorogenic acid, chicoric acid, and 3,5-di-O-caffeoylquinic acid (3,5-DCQA)] and one flavonoid (luteolin-7-O-glucuronide) by high-performance liquid chromatography and electrospray ionization mass spectrometry. Hydroxycinnamic acids from C. denticulatum were rapidly released in the stomach and duodenum phase, maximizing the possibility of absorption in the intestinal Caco-2 cells. The digestive stability and bioaccessibility of hydroxycinnamic acids from C. denticulatum were markedly low after simulated digestion and remained minimal in the soluble fraction of the ileum phase. Unlike the four hydroxycinnamic acids, luteolin-7-O-glucuronide was stable in terms of digestive stability and bioaccessibility during simulated digestion. The cell permeabilities (P(app A to B)/P(app B to A)) of caftaric acid (0.054) and chlorogenic acid (0.055) were higher than those of chicoric acid (0.011) and 3,5-DCQA (0.006) in general. That of luteolin-7-O-glucuronide was not detectable, showing its low absorption in Caco-2 cells. These results indicate that the rapid release of hydroxycinnamic acids in the stomach and duodenum phase may increase the potential for absorption in Caco-2 cells, and that luteolin-7-O-glucuronide, which was stable in terms of digestive stability and bioaccessibility, has relatively low absorption compared with hydroxycinnamic acids.
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Affiliation(s)
- Hee Ju Lee
- Functional Food Center, Korea Institute of Science and Technology (KIST) , Gangneung 210-340, Republic of Korea
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Xu D, Hu L, Xia X, Song J, Li L, Song E, Song Y. Tetrachlorobenzoquinone induces acute liver injury, up-regulates HO-1 and NQO1 expression in mice model: the protective role of chlorogenic acid. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2014; 37:1212-1220. [PMID: 24816176 DOI: 10.1016/j.etap.2014.04.022] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/15/2014] [Accepted: 04/19/2014] [Indexed: 06/03/2023]
Abstract
Tetrachlorobenzoquinone (TCBQ) is an active metabolite of pentachlorophenol (PCP). Although PCP has been investigated extensively, there are only a few reports describing the toxicity effect of TCBQ, and no report regarding TCBQ-induced liver injury in vivo. In the current study, we aimed to examine the acute hepatic toxicity of TCBQ in the mice model. Chlorogenic acid (CGA) exhibits promising antioxidant activity in the past studies, thus, the second aim of this study was to evaluate the protective effect of CGA on TCBQ-induced liver injury. Our results indicated TCBQ-intoxication caused marked liver cell necrosis and inflammation but not apoptosis, and this damage was alleviated by CGA treatment. Meantime, TCBQ-intoxication enhanced serum ALT, AST activities, TBIL content, hepatic oxidative stress and lipid peroxidation, decreased GSH content and inhibited the activities of antioxidant enzymes. Western blot and immunohistochemical analysis showed that TCBQ marked up-regulated HO-1 and NQO1 expression. On the other hand, pretreatment of CGA reduced TCBQ-induced liver damage remarkably. Taking together, these results revealed that TCBQ has strong hepatic toxic effect, and at least a part of this effect is initiated by free radical and relieved with CGA administration.
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Affiliation(s)
- Demei Xu
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, PR China
| | - Lihua Hu
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, PR China
| | - Xiaomin Xia
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, PR China
| | - Jianbo Song
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, PR China
| | - Lingrui Li
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, PR China
| | - Erqun Song
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, PR China
| | - Yang Song
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing 400715, PR China.
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105
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106
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Shi X, Tang Y, Zhu H, Li W, Li W, Li Z, Luo N, Duan JA. Pharmacokinetic comparison of seven major bio-active components in normal and blood deficiency rats after oral administration of Danggui Buxue decoction by UPLC-TQ/MS. JOURNAL OF ETHNOPHARMACOLOGY 2014; 153:169-177. [PMID: 24583239 DOI: 10.1016/j.jep.2014.02.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 01/09/2014] [Accepted: 02/07/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Blood deficiency is commonly encountered among women, and is the root of many gynecological disorders. Danggui Buxue Decoction (DBD), a classical traditional Chinese formula which is composed of Astragali Radix (AR) and Angelicae Sinensis Radix (ASR) at the ratio of 5:1 (w/w), is widely used in TCM clinics for treatment of blood deficiency syndrome. This study is to compare the in vivo pharmacokinetic properties of seven major bio-active components in normal and blood deficiency rats after oral administration of DBD. MATERIALS AND METHODS Blood deficiency rats were induced by bleeding from orbit at the dosages of 5.0mL/kg each day for 12 days. Normal and blood deficiency rats were administrated of DBD on the 12th day at the dosage of 20g/kg, and blood was collected at different time points after then. Concentrations of ferulic acid, caffeic acid, butylphthalide, ligustilide, calycosin-7-O-β-glucoside, ononin, and astragaloside IV in plasma were quantified by UPLC-TQ/MS, and the main pharmacokinetic parameters were calculated by DAS 2.0. RESULTS It was found that Cmax, Tmax and MRT0~T of astragaloside IV, Cmax, T1/2Z, AUC0~T and MRT0~T of calycosin-7-O-β-glucoside, T1/2Z and AUC0~T of ferulic acid, T1/2Z, AUC0~T and MRT0~T of ononin, and MRT0~T of ligustilide, butylphthalide, and caffeic acid in blood deficiency rats was significantly different (P<0.05) from normal rats. CONCLUSIONS This study was the first report about pharmacokinetic investigation in blood deficiency animals which was conducted by bleeding. And the results demonstrated that the seven DBD constituents in normal and blood deficiency rats had obvious differences in some pharmacokinetic characteristics, suggesting that the rate and extent of drug metabolism were altered in blood deficiency animals.
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Affiliation(s)
- Xuqin Shi
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engeering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yuping Tang
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engeering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China.
| | - Huaxu Zhu
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engeering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Weixia Li
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engeering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Wei Li
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engeering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Zhenhao Li
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engeering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Niancui Luo
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engeering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Jin-ao Duan
- Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, National and Local Collaborative Engeering Center of Chinese Medicinal Resources Industrialization and Formulae Innovative Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
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107
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Zhao JG, Yan QQ, Xue RY, Zhang J, Zhang YQ. Isolation and identification of colourless caffeoyl compounds in purple sweet potato by HPLC-DAD-ESI/MS and their antioxidant activities. Food Chem 2014; 161:22-6. [PMID: 24837917 DOI: 10.1016/j.foodchem.2014.03.079] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/12/2014] [Accepted: 03/15/2014] [Indexed: 10/25/2022]
Abstract
More than 10 red anthocyanins and related glucosides have been isolated and identified from purple sweet potato (Ipomoea batatas, Ayamurasaki) in the recent decades. This paper reports the isolation of colourless caffeoyl compounds from purple sweet potato using AB-8 macroresin absorption and semi-preparative HPLC-DAD. The structures of the five isolated monomers were identified as: 5-caffeoylquinic acid (1), 6-O-caffeoyl-β-d-fructofuranosyl-(2-1)-α-d-glucopyranoside (2) and trans-4,5-dicaffeoylquinic acid (3), 3,5-dicaffeoylquinic acid (4), 4,5-dicaffeoylquinic acid (5), and by ESI/MS and NMR. Compounds 1, 4 and 5 were reported previously in combination with anthocyanins in purple sweet potato, whereas 2 and 3 were found for the first time. In vitro antioxidant assay showed trans-4,5-dicaffeoylquinic acid has significant antioxidant activities. These results should lay the groundwork for further work identifying purple sweet potato as a healthy food.
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Affiliation(s)
- Jin-Ge Zhao
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, RM702-2303, No. 199, Renai Road, Dushuhu Higher Edu. Town, Suzhou 215123, PR China
| | - Qian-Qian Yan
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, RM702-2303, No. 199, Renai Road, Dushuhu Higher Edu. Town, Suzhou 215123, PR China
| | - Ren-Yu Xue
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, RM702-2303, No. 199, Renai Road, Dushuhu Higher Edu. Town, Suzhou 215123, PR China
| | - Jian Zhang
- College of Pharmaceutical Science, Soochow University, No. 199, Renai Road, Dushuhu Higher Edu. Town, Suzhou 215123, PR China.
| | - Yu-Qing Zhang
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, RM702-2303, No. 199, Renai Road, Dushuhu Higher Edu. Town, Suzhou 215123, PR China.
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108
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Tomas-Barberan F, García-Villalba R, Quartieri A, Raimondi S, Amaretti A, Leonardi A, Rossi M. In vitro transformation of chlorogenic acid by human gut microbiota. Mol Nutr Food Res 2013; 58:1122-31. [PMID: 24550206 DOI: 10.1002/mnfr.201300441] [Citation(s) in RCA: 118] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Revised: 10/10/2013] [Accepted: 10/12/2013] [Indexed: 11/06/2022]
Abstract
SCOPE Chlorogenic acid (3-O-caffeoyl-quinic acid, C-QA), the caffeic ester of quinic acid, is one of the most abundant phenolic acids in Western diet. The majority of C-QA escapes absorption in the small intestine and reaches the colon, where the resident microbiota transforms it into several metabolites. C-QA conversion by the gut microbiota from nine subjects was compared to evaluate the variability of bacterial metabolism. It was investigated whether a potentially probiotic Bifidobacterium strain, capable of C-QA hydrolysis, could affect C-QA fate. METHODS AND RESULTS Bioconversion experiments exploiting the microbiota from diverse subjects revealed that C-QA was metabolized through a succession of hydrogenation, dexydroxylation and ester hydrolysis, occurring in different order among the subjects. Transformation may proceed also through quinic acid residue breakdown, since caffeoyl-glycerol intermediates were identified (HPLC-MS/MS, Q-TOF). All the pathways converged on 3-(3-hydroxyphenyl)-propanoic acid, which was transformed to hydroxyphenyl-ethanol and/or phenylacetic acid in few subjects. A strain of Bifidobacterium animalis able to hydrolyze C-QA was added to microbiota cultures. It affected microbial composition but not to such an extent that C-QA metabolism was modified. CONCLUSION A picture of the variability of microbiota C-QA transformations among subjects is provided. The transformation route through caffeoyl-glycerol intermediates is described for the first time.
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109
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Liao CC, Ou TT, Wu CH, Wang CJ. Prevention of diet-induced hyperlipidemia and obesity by caffeic acid in C57BL/6 mice through regulation of hepatic lipogenesis gene expression. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:11082-11088. [PMID: 24156384 DOI: 10.1021/jf4026647] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This study investigated the influence of phenolic caffeic acid on obesity in mice fed a high fat diet and its underlying mechanisms base on adipose and hepatic lipid lipogenesis. C57BL/6 mice were fed a normal diet or a HFD (20% fat, w/w) with or without caffeic acid (0.02% and 0.08%, w/w) for 6 weeks. The effects of caffeic acid on hyperlipidemia, hyperglycemia, visceral fat accumulation, and related enzyme activities in HFD-mice are examined. The supplementation of caffeic acid significantly lowered body weight, visceral fat mass, plasma GOT and GPT levels, FAS activity, and free fatty acid compared to the HFD group. Caffeic acid also lowered triglyceride and cholesterol concentrations in plasma and liver. Furthermore, we showed that caffeic acid efficiently inhibited cholesterol biosynthesis as evidenced by 3-hydroxy-3-methylglutaryl CoA reductase in the liver. Caffeic acid supplementation suppressed the activity of lipogenesis via sterol regulatory element-binding protein 1 c and its target enzyme fatty acid synthase. In addition, caffeic acid resulted in increased phosphorylation of AMP-activated protein kinase and decreased acetyl carboxylase, a downstream target of AMPK, which are related to fatty acid β-oxidation in the liver. In conclusion, these results indicate that caffeic acid exhibits a significant potential as an antiobesity agent by suppression of lipogenic enzymes and hepatic lipid accumulation.
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Affiliation(s)
- Chung-Chia Liao
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Cheng-Ching Hospital , Taichung, Taiwan
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110
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Di Lecce G, Boselli E, D'Ignazi G, Frega NG. Evolution of phenolics and glutathione in Verdicchio wine obtained with maceration under reductive conditions. Lebensm Wiss Technol 2013. [DOI: 10.1016/j.lwt.2013.03.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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111
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Gaascht F, Dicato M, Diederich M. Venus Flytrap (Dionaea muscipula Solander ex Ellis) Contains Powerful Compounds that Prevent and Cure Cancer. Front Oncol 2013; 3:202. [PMID: 23971004 PMCID: PMC3747514 DOI: 10.3389/fonc.2013.00202] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 07/24/2013] [Indexed: 12/11/2022] Open
Abstract
Chemoprevention uses natural or synthetic molecules without toxic effects to prevent and/or block emergence and development of diseases including cancer. Many of these natural molecules modulate mitogenic signals involved in cell survival, apoptosis, cell cycle regulation, angiogenesis, or on processes involved in the development of metastases occur naturally, especially in fruits and vegetables bur also in non-comestible plants. Carnivorous plants including the Venus flytrap (Dionaea muscipula Solander ex Ellis) are much less investigated, but appear to contain a wealth of potent bioactive secondary metabolites. Aim of this review is to give insight into molecular mechanisms triggered by compounds isolated from these interesting plants with either therapeutic or chemopreventive potential.
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Affiliation(s)
- François Gaascht
- Laboratory for Molecular and Cellular Biology of Cancer (LBMCC), Hôpital Kirchberg, Luxembourg, Luxembourg
| | - Mario Dicato
- Laboratory for Molecular and Cellular Biology of Cancer (LBMCC), Hôpital Kirchberg, Luxembourg, Luxembourg
| | - Marc Diederich
- Department of Pharmacy, College of Pharmacy, Seoul National University, Seoul, South Korea
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Yang XW, Wang N, Li W, Xu W, Wu S. Biotransformation of 4,5-O-dicaffeoylquinic acid methyl ester by human intestinal flora and evaluation on their inhibition of NO production and antioxidant activity of the products. Food Chem Toxicol 2013; 55:297-303. [DOI: 10.1016/j.fct.2012.12.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Revised: 12/20/2012] [Accepted: 12/23/2012] [Indexed: 11/16/2022]
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113
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Gundala SR, Yang C, Lakshminarayana N, Asif G, Gupta MV, Shamsi S, Aneja R. Polar biophenolics in sweet potato greens extract synergize to inhibit prostate cancer cell proliferation and in vivo tumor growth. Carcinogenesis 2013; 34:2039-49. [PMID: 23629419 DOI: 10.1093/carcin/bgt141] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Polyphenolic phytochemicals present in fruits and vegetables indisputably confer anticancer benefits upon regular consumption. Recently, we demonstrated the growth-inhibitory and apoptosis-inducing properties of polyphenol-rich sweet potato greens extract (SPGE) in cell culture and in vivo prostate cancer xenograft models. However, the bioactive constituents remain elusive. Here, we report a bioactivity-guided fractionation of SPGE based upon differential solvent polarity using chromatographic techniques that led to the identification of a remarkably active polyphenol-enriched fraction, F5, which was ~100-fold more potent than the parent extract as shown by IC50 measurements in human prostate cancer cells. High-performance liquid chromatography-ultraviolet and mass spectrometric analyses of the seven SPGE fractions suggested varying abundance of the major phenols, quinic acid (QA), caffeic acid, its ester chlorogenic acid, and isochlorogenic acids, 4,5-di-CQA, 3,5-di-CQA and 3,4-di-CQA, with a distinct composition of the most active fraction, F5. Subfractionation of F5 resulted in loss of bioactivity, suggesting synergistic interactions among the constituent phytochemicals. Quantitative analyses revealed a ~2.6- and ~3.6-fold enrichment of QA and chlorogenic acid, respectively, in F5 and a definitive ratiometric relationship between the isochlorogenic acids. Daily oral administration of 400mg/kg body wt of F5 inhibited growth and progression of prostate tumor xenografts by ~75% in nude mice, as evidenced by tumor volume measurements and non-invasive real-time bioluminescence imaging. These data generate compelling grounds to further examine the chemopreventive efficacy of the most active fraction of SPGE and suggest its potential usefulness as a dietary supplement for prostate cancer management.
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114
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Comparison of protective effects of three varieties of sugarcane leaves on oxidative stress in Clone 9 cells. J Funct Foods 2013. [DOI: 10.1016/j.jff.2013.01.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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115
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Anwar J, Spanevello RM, Pimentel VC, Gutierres J, Thomé G, Cardoso A, Zanini D, Martins C, Palma HE, Bagatini MD, Baldissarelli J, Schmatz R, Leal CAM, da Costa P, Morsch VM, Schetinger MRC. Caffeic acid treatment alters the extracellular adenine nucleotide hydrolysis in platelets and lymphocytes of adult rats. Food Chem Toxicol 2013; 56:459-66. [PMID: 23454297 DOI: 10.1016/j.fct.2013.02.030] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 02/14/2013] [Accepted: 02/17/2013] [Indexed: 01/28/2023]
Abstract
This study evaluated the effects of caffeic acid on ectonucleotidase activities such as NTPDase (nucleoside triphosphate diphosphohydrolase), Ecto-NPP (nucleotide pyrophosphatase/phosphodiesterase), 5'-nucleotidase and adenosine deaminase (ADA) in platelets and lymphocytes of rats, as well as in the profile of platelet aggregation. Animals were divided into five groups: I (control); II (oil); III (caffeic acid 10 mg/kg); IV (caffeic acid 50 mg/kg); and V (caffeic acid 100 mg/kg). Animals were treated with caffeic acid diluted in oil for 30 days. In platelets, caffeic acid decreased the ATP hydrolysis and increased ADP hydrolysis in groups III, IV and V when compared to control (P<0.05). The 5'-nucleotidase activity was decreased, while E-NPP and ADA activities were increased in platelets of rats of groups III, IV and V (P<0.05). Caffeic acid reduced significantly the platelet aggregation in the animals of groups III, IV and V in relation to group I (P<0.05). In lymphocytes, the NTPDase and ADA activities were increased in all groups treated with caffeic acid when compared to control (P<0.05). These findings demonstrated that the enzymes were altered in tissues by caffeic acid and this compound decreased the platelet aggregation suggesting that caffeic acid should be considered a potentially therapeutic agent in disorders related to the purinergic system.
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Affiliation(s)
- Javed Anwar
- Programa de Pós-Graduação em Ciências Biológicas, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, Av. Roraima, 97105-900 Santa Maria, RS, Brazil
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116
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Yang J, Lv F, Chen XQ, Cui WX, Chen LH, Wen XD, Wang Q. Pharmacokinetic study of major bioactive components in rats after oral administration of extract of Ilex hainanensis by high-performance liquid chromatography/electrospray ionization mass spectrometry. J Pharm Biomed Anal 2013; 77:21-8. [PMID: 23384548 DOI: 10.1016/j.jpba.2013.01.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2012] [Revised: 01/04/2013] [Accepted: 01/05/2013] [Indexed: 12/21/2022]
Abstract
Ilex hainanensis Merr. is commonly used as a folk remedy for treating hypertension, dyslipidemia and inflammation in Traditional Chinese Medicine (TCMs) and it also has great potential to treat non-alcoholic fatty liver disease (NAFLD). Chlorogenic acid, kaempferol-7-O-β-d-glucoside, and ilexgenin A are three major bioactive components in I. hainanensis extract. In this study, a rapid, sensitive and convenient LC-MS method was developed for their simultaneous determination in the plasma of normal and NAFLD rats. The method was validated in terms of selectivity, linearity and sensitivity, and shows advantages in monitoring the pharmacokinetic behaviors of these three compounds. Results revealed the pharmacokinetic behaviors of chlorogenic acid, kaempferol-7-O-β-d-glucoside, and ilexgenin A could be significantly changed in NAFLD rats after oral administration of I. hainanensis extract compared with normal rats. The areas under the plasma concentration-time curve (AUC) and maximum plasma concentration (Cmax) of the three analytes were greatly decreased and the plasma clearance (CL) for kaempferol-7-O-β-d-glucoside, Ilexgenin A were greatly increased in NAFLD rats. Meanwhile, the mean residence time (MRT) of kaempferol-7-O-β-d-glucoside and Ilexgenin A were increased in the NAFLD rats. This is the first report on the determination of the major bioactive components in rat plasma after oral administration of I. hainanensis extract. These results provided a meaningful basis for evaluating the clinical application of this medicine.
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Affiliation(s)
- Jie Yang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China
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117
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Piazzon A, Vrhovsek U, Masuero D, Mattivi F, Mandoj F, Nardini M. Antioxidant activity of phenolic acids and their metabolites: synthesis and antioxidant properties of the sulfate derivatives of ferulic and caffeic acids and of the acyl glucuronide of ferulic acid. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:12312-23. [PMID: 23157164 DOI: 10.1021/jf304076z] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The main metabolites of caffeic and ferulic acids (ferulic acid-4'-O-sulfate, caffeic acid-4'-O-sulfate, and caffeic acid-3'-O-sulfate), the most representative phenolic acids in fruits and vegetables, and the acyl glucuronide of ferulic acid were synthesized, purified, and tested for their antioxidant activity in comparison with those of their parent compounds and other related phenolics. Both the ferric reducing antioxidant power (FRAP) assay and the 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging method were used. Ferulic acid-4'-O-sulfate and ferulic acid-4'-O-glucuronide exhibited very low antioxidant activity, while the monosulfate derivatives of caffeic acid were 4-fold less efficient as the antioxidant than caffeic acid. The acyl glucuronide of ferulic acid showed strong antioxidant action. The antioxidant activity of caffeic acid-3'-O-glucuronide and caffeic acid-4'-O-glucuronide was also studied. Our results demonstrate that some of the products of phenolic acid metabolism still retain strong antioxidant properties. Moreover, we first demonstrate the ex vivo synthesis of the acyl glucuronide of ferulic acid by mouse liver microsomes, in addition to the phenyl glucuronide.
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Affiliation(s)
- A Piazzon
- Agricultural Research Council, Rome, Italy
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118
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León-González AJ, Mateos R, Ramos S, Martín MÁ, Sarriá B, Martín-Cordero C, López-Lázaro M, Bravo L, Goya L. Chemo-protective activity and characterization of phenolic extracts from Corema album. Food Res Int 2012. [DOI: 10.1016/j.foodres.2012.09.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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119
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El-Seedi HR, El-Said AMA, Khalifa SAM, Göransson U, Bohlin L, Borg-Karlson AK, Verpoorte R. Biosynthesis, natural sources, dietary intake, pharmacokinetic properties, and biological activities of hydroxycinnamic acids. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:10877-95. [PMID: 22931195 DOI: 10.1021/jf301807g] [Citation(s) in RCA: 257] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Hydroxycinnamic acids are the most widely distributed phenolic acids in plants. Broadly speaking, they can be defined as compounds derived from cinnamic acid. They are present at high concentrations in many food products, including fruits, vegetables, tea, cocoa, and wine. A diet rich in hydroxycinnamic acids is thought to be associated with beneficial health effects such as a reduced risk of cardiovascular disease. The impact of hydroxycinnamic acids on health depends on their intake and pharmacokinetic properties. This review discusses their chemistry, biosynthesis, natural sources, dietary intake, and pharmacokinetic properties.
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Affiliation(s)
- Hesham R El-Seedi
- Division of Pharmacognosy, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre, Box 574, SE-75123 Uppsala, Sweden.
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120
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Mubarak A, Bondonno CP, Liu AH, Considine MJ, Rich L, Mas E, Croft KD, Hodgson JM. Acute effects of chlorogenic acid on nitric oxide status, endothelial function, and blood pressure in healthy volunteers: a randomized trial. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:9130-6. [PMID: 22900702 DOI: 10.1021/jf303440j] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
There is mounting evidence that specific dietary polyphenols can enhance vascular health by augmenting nitric oxide. Our aim was to investigate the acute effects of chlorogenic acid, an important dietary phenolic acid present in coffee (400 mg, equivalent to 2 cups of coffee), on nitric oxide status, endothelial function, and blood pressure. Healthy men and women (n = 23) were recruited to a randomized, double-blind, placebo-controlled, crossover trial. Chlorogenic acid resulted in significantly higher plasma concentrations of chlorogenic acid (P < 0.001). Relative to control, the mean post-treatment systolic blood pressure (-2.41 mmHg, 95% CI: -0.03, -4.78; P = 0.05) and diastolic blood pressure (-1.53 mmHg, 95% CI: -0.05, -3.01; P = 0.04) were significantly lower with chlorogenic acid. Markers of nitric oxide status (P > 0.10) and the measure of endothelial function (P = 0.60) were not significantly influenced. Chlorogenic acid can lower blood pressure acutely, an effect that, if sustained, would benefit cardiovascular health.
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Affiliation(s)
- Aidilla Mubarak
- School of Medicine and Pharmacology, University of Western Australia, Australia
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121
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Denev PN, Kratchanov CG, Ciz M, Lojek A, Kratchanova MG. Bioavailability and Antioxidant Activity of Black Chokeberry (Aronia melanocarpa) Polyphenols: in vitro and in vivo Evidences and Possible Mechanisms of Action: A Review. Compr Rev Food Sci Food Saf 2012. [DOI: 10.1111/j.1541-4337.2012.00198.x] [Citation(s) in RCA: 144] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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122
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Qiu J, Kitamura Y, Miyata Y, Tamaru S, Tanaka K, Tanaka T, Matsui T. Transepithelial transport of theasinensins through Caco-2 cell monolayers and their absorption in Sprague-Dawley rats after oral administration. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:8036-8043. [PMID: 22831633 DOI: 10.1021/jf302242n] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The aim of this study is to illustrate the in vivo and in vitro absorption of theasinensins B and A that are (-)-epigallocatechin-3-O-gallate (EGCG)-(-)-epigallocatechin (EGC) dimer and EGCG dimer, respectively, and their transport pathway across the intestinal membrane. Our animal study by a single oral administration to rats demonstrated the intact absorption of theasinensins into the blood system, which was estimated to be a >10-fold lower absorption amount than EGCG. The in vitro absorption study indicated that theasinensins can be transported across Caco-2 cell monolayers, while their permeability coefficients were also >10-fold lower than those of EGCG and EGC. Transport experiments using cytochalasin D or quercetin as a tight junction (TJ) modulator and a non-saturable permeation revealed that theasinensins were transported across Caco-2 cells in a TJ paracellular diffusion route. In conclusion, the dimers of condensed catechins, theasinensins B and A, can be absorbed intact into rat blood and transported across Caco-2 cell monolayers probably through a TJ paracellular pathway.
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Affiliation(s)
- Ju Qiu
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University, Hakozaki, Fukuoka, Japan
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123
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Xie C, Zhong D, Chen X. Identification of the ortho-benzoquinone intermediate of 5-O-caffeoylquinic acid in vitro and in vivo: comparison of bioactivation under normal and pathological situations. Drug Metab Dispos 2012; 40:1628-40. [PMID: 22551521 DOI: 10.1124/dmd.112.045641] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
5-O-Caffeoylquinic acid (5-CQA) is one of the major bioactive ingredients in some Chinese herbal injections. Occasional anaphylaxis has been reported for these injections during their clinical use, possibly caused by reactive metabolites of 5-CQA. This study aimed at characterizing the bioactivation pathway(s) of 5-CQA and the metabolic enzyme(s) involved. After incubating 5-CQA with GSH and NADPH-supplemented human liver microsomes, two types of GSH conjugates were characterized: one was M1-1 from the 1,4-addition of GSH to ortho-benzoquinone intermediate; the other was M2-1 and M2-2 from the 1,4-addition of GSH directly to the α,β-unsaturated carbonyl group of the parent. The formation of M1-1 was cytochrome P450 (P450)-mediated, with 3A4 and 2E1 as the principal catalyzing enzymes, whereas the formation of M2-1 and M2-2 was independent of NADPH and could be accelerated by cytosolic glutathione transferase. In the presence of cumene hydroperoxide, M1-1 formation increased 6-fold, indicating that 5-CQA can also be bioactivated by P450 peroxidase under oxidizing conditions. Furthermore, M1-1 could be formed by myeloperoxidase in activated human leukocytes, implying that 5-CQA bioactivation is more likely to occur under inflammatory conditions. This finding was supported by experiments on lipopolysaccharide-induced inflammatory rats, where a greater amount of M1-1 was detected. In S-adenosyl methionine- and GSH-supplemented human S9 incubations, M1-1 formation decreased by 80% but increased after tolcapone-inhibited catechol-O-methyltransferase (COMT) activity. In summary, the high reactivities of the ortho-benzoquinone metabolite and α,β-unsaturated carbonyl group of 5-CQA to nucleophiles have been demonstrated. Different pathological situations and COMT activities in patients may alter the bioactivation extent of 5-CQA.
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Affiliation(s)
- Cen Xie
- Center for Drug Metabolism and Pharmacokinetics, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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124
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Tang C, Sojinu OS. Simultaneous determination of caffeic acid phenethyl ester and its metabolite caffeic acid in dog plasma using liquid chromatography tandem mass spectrometry. Talanta 2012; 94:232-9. [DOI: 10.1016/j.talanta.2012.03.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 07/05/2011] [Accepted: 07/09/2011] [Indexed: 12/12/2022]
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125
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Bouayed J, Deußer H, Hoffmann L, Bohn T. Bioaccessible and dialysable polyphenols in selected apple varieties following in vitro digestion vs. their native patterns. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.10.030] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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126
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Jurgoński A, Juśkiewicz J, Zduńczyk Z, Król B. Caffeoylquinic acid-rich extract from chicory seeds improves glycemia, atherogenic index, and antioxidant status in rats. Nutrition 2012; 28:300-6. [PMID: 22014632 DOI: 10.1016/j.nut.2011.06.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 06/03/2011] [Accepted: 06/21/2011] [Indexed: 01/19/2023]
Abstract
OBJECTIVE Comparison of the effects of a high-fructose diet supplemented with rutin, a phenolic compound with well-recognized bioavailability and bioactivity, and a chicory (Cichorium intybus L.) seed extract rich in caffeoylquinic acids (CQA) on gut physiology and the development of disorders related to metabolic syndrome. METHODS A 28-d experiment was conducted on 32 young male Wistar rats. In comparison with control rats fed a standard corn starch diet (group C), the experimental group (group E) was fed a diet with an increased content of cholesterol and fructose (to 1% and 66% of the diet, respectively), as well as with oxidized soybean oil. Rats from the other two experimental groups were administered the same diet as group E during the first 2 wk of feeding, whereas at the beginning of the last 2 wk, the diet was enriched with rutin (group ER) or the CQA-rich ethanol extract from chicory seeds (9.6% of CQA, group EC), so the amount of added phenolics was equal in both dietary groups (0.15%). RESULTS The diet administered in group E caused hyperglycemia and increased blood serum atherogenicity in rats, but did not induce other manifestations of the metabolic syndrome, i.e., dyslipidemia and oxidative stress. Additionally, it affected gut physiology through increasing mucosal sucrase activity and disturbing fermentative processes in the cecum, such as the production of short-chain fatty acids and the activity of microbial enzymes. Similarly to rutin, the dietary addition of the chicory seed extract improved glycemia, which was comparable to that determined in group C. In addition, the extract was found to decrease the atherogenic index to the level observed in group C and to increase blood antioxidant status. Both dietary supplements reduced the content of thiobarbituric acid-reactive substances in kidney and heart tissue when compared with group E. CONCLUSION The potential efficacy of the CQA-rich extract from chicory seeds in improving diet-induced metabolic disturbances proved to be better than that of rutin; thus, the extract might be considered as a dietary supplement for carrying out clinical trials.
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Affiliation(s)
- Adam Jurgoński
- Division of Food Science, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Olsztyn, Poland.
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127
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Ruiz-Crespo S, Trejo-Gabriel-Galan JM, Cavia-Saiz M, Muñiz P. Coffee Component 3-Caffeoylquinic Acid Increases Antioxidant Capacity but not Polyphenol Content in Experimental Cerebral Infarction. Neurochem Res 2012; 37:1085-90. [DOI: 10.1007/s11064-012-0711-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Revised: 12/07/2011] [Accepted: 01/18/2012] [Indexed: 10/14/2022]
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128
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Tulipani S, Martinez Huelamo M, Rotches Ribalta M, Estruch R, Ferrer EE, Andres-Lacueva C, Illan M, Lamuela-Raventós RM. Oil matrix effects on plasma exposure and urinary excretion of phenolic compounds from tomato sauces: Evidence from a human pilot study. Food Chem 2012. [DOI: 10.1016/j.foodchem.2011.07.078] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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129
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Identification of bioactive compounds and comparison of apoptosis induction of three varieties of sugarcane leaves. J Funct Foods 2012. [DOI: 10.1016/j.jff.2012.01.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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130
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Zhao Y, Wang J, Ballevre O, Luo H, Zhang W. Antihypertensive effects and mechanisms of chlorogenic acids. Hypertens Res 2011; 35:370-4. [DOI: 10.1038/hr.2011.195] [Citation(s) in RCA: 177] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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131
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Ye Z, Hong CO, Lee K, Hostetter J, Wannemuehler M, Hendrich S. Plasma caffeic acid is associated with statistical clustering of the anticolitic efficacy of caffeic acid in dextran sulfate sodium-treated mice. J Nutr 2011; 141:1989-95. [PMID: 21918060 DOI: 10.3945/jn.111.142208] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We hypothesized that interindividual variability in the bioavailability of caffeic acid (CA) would influence its anticolitic efficacy and that mice may be appropriate for modeling human gut microbial metabolism of CA, which is thought to influence CA bioavailability. Anaerobic human fecal and mouse cecal sample mixtures were incubated with CA derivatives from Echinacea purpurea and compound disappearance rates were measured, which were similar in both sample types. CA metabolism, including formation of its main metabolite, m-hydroxyphenylpropionate, in the mouse cecum may usefully model human gut metabolism of this compound. Ten-week-old CD-1/IGS female mice were fed 120 mg CA/kg (n = 36) or control diet for 7 d (n = 12); one-half of each group then drank 1.25% dextran sulfate sodium (DSS) in water for 5 d. DSS-treated mice fed CA showed lessened colitic damage than did mice given DSS alone, with longer colons, greater body weight, and colonic Cyp4b1 expression. Cluster analysis of the cecal histopathological score showed that mice with severe cecal damage (mean cecal score = 8.5; n = 11) also had greater myeloperoxidase (MPO) activity and lower plasma CA compared with mice showing mild cecal damage (mean cecal score = 4.5; n = 4) (P < 0.05). Cecal score was positively correlated with colonic MPO activity (r = 0.72; P < 0.05) and negatively correlated with plasma CA (r = -0.57; P < 0.05). These studies indicated that the anticolitic efficacy of CA was related to variability in CA bioavailability, which may be influenced by gut microbial metabolism of this compound.
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Affiliation(s)
- Zhong Ye
- Department of Nutrition, University of California, Davis, CA, USA
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132
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Tunnicliffe JM, Eller LK, Reimer RA, Hittel DS, Shearer J. Chlorogenic acid differentially affects postprandial glucose and glucose-dependent insulinotropic polypeptide response in rats. Appl Physiol Nutr Metab 2011; 36:650-9. [PMID: 21977912 DOI: 10.1139/h11-072] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Regular coffee consumption significantly lowers the risk of type 2 diabetes (T2D). Coffee contains thousands of compounds; however, the specific component(s) responsible for this reduced risk is unknown. Chlorogenic acids (CGA) found in brewed coffee inhibit intestinal glucose uptake in vitro. The objective of this study was to elucidate the mechanisms by which CGA acts to mediate blood glucose response in vivo. Conscious, unrestrained, male Sprague-Dawley rats were chronically catheterized and gavage-fed a standardized meal (59% carbohydrate, 25% fat, 12% protein), administered with or without CGA (120 mg·kg(-1)), in a randomized crossover design separated by a 3-day washout period. Acetaminophen was co-administered to assess the effects of CGA on gastric emptying. The incretins glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP) were measured. GLP-1 response in the presence of glucose and CGA was further examined, using the human colon cell line NCI-H716. Total area under the curve (AUC) for blood glucose was significantly attenuated in rats fed CGA (p < 0.05). Despite this, no differences in plasma insulin or nonesterified fatty acids were observed, and gastric emptying was not altered. Plasma GIP response was blunted in rats fed CGA, with a lower peak concentration and AUC up to 180 min postprandially (p < 0.05). There were no changes in GLP-1 secretion in either the in vivo or in vitro study. In conclusion, CGA treatment resulted in beneficial effects on blood glucose response, with alterations seen in GIP concentrations. Given the widespread consumption and availability of coffee, CGA may be a viable prevention tool for T2D.
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133
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Redeuil K, Smarrito-Menozzi C, Guy P, Rezzi S, Dionisi F, Williamson G, Nagy K, Renouf M. Identification of novel circulating coffee metabolites in human plasma by liquid chromatography–mass spectrometry. J Chromatogr A 2011; 1218:4678-88. [DOI: 10.1016/j.chroma.2011.05.050] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 05/11/2011] [Accepted: 05/15/2011] [Indexed: 01/05/2023]
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134
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Characterization of hydroxycinnamic acid glucuronide and sulfate conjugates by HPLC–DAD–MS2: Enhancing chromatographic quantification and application in Caco-2 cell metabolism. J Pharm Biomed Anal 2011; 55:1245-54. [DOI: 10.1016/j.jpba.2011.03.023] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Revised: 03/11/2011] [Accepted: 03/14/2011] [Indexed: 11/22/2022]
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135
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Qiu J, Saito N, Noguchi M, Fukui K, Yoshiyama K, Matsugano K, Terehara N, Matsui T. Absorption of 6-O-caffeoylsophorose and its metabolites in Sprague-Dawley rats detected by electrochemical detector-high-performance liquid chromatography and electrospray ionization-time-of-flight-mass spectrometry methods. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:6299-6304. [PMID: 21534624 DOI: 10.1021/jf200764d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Absorption and metabolism of a natural compound, 6-O-caffeoylsophorose (CS) from acylated anthocyanins in a red vinegar fermented with purple sweet potato, were clarified. The absorption of CS and conjugated CS in blood from orally administrated Sprague-Dawley rats at a dose of 400 mg/kg was investigated by electrochemical detection-high performance liquid chromatography. As a result, CS was successfully detected in rat plasma (AUC(0-6h), 108.6 ± 8.1 nmol h/mL) and was found to be an intact absorbable polyphenol. In addition, half of the absorbed CS was detected as its conjugates (AUC(0-6h), 50.7 ± 5.7 nmol h/mL) as well as caffeic and ferulic acids from CS. By a time-of-flight-mass spectrometric analysis of CS-administered plasma sample, glucuronide and methylated conjugates of CS were identified, in addition to glucuronide, methylated, or sulfate conjugates of caffeic and ferulic acids. Consequently, CS was absorbed in intact form into rat blood and partly degraded to caffeic and ferulic acids or metabolized by glucuronidation, methylation, or sulfatation.
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Affiliation(s)
- Ju Qiu
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
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136
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Kahle K, Kempf M, Schreier P, Scheppach W, Schrenk D, Kautenburger T, Hecker D, Huemmer W, Ackermann M, Richling E. Intestinal transit and systemic metabolism of apple polyphenols. Eur J Nutr 2010; 50:507-22. [DOI: 10.1007/s00394-010-0157-0] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2010] [Accepted: 12/05/2010] [Indexed: 01/23/2023]
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137
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Tai J, Cheung S, Chan E, Hasman D. Antiproliferation Effect of Commercially Brewed Coffees on Human Ovarian Cancer Cells In Vitro. Nutr Cancer 2010; 62:1044-57. [DOI: 10.1080/01635581.2010.492083] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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138
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Ni S, Qian D, Duan JA, Guo J, Shang EX, Shu Y, Xue C. UPLC–QTOF/MS-based screening and identification of the constituents and their metabolites in rat plasma and urine after oral administration of Glechoma longituba extract. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:2741-50. [DOI: 10.1016/j.jchromb.2010.08.014] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2010] [Revised: 07/18/2010] [Accepted: 08/14/2010] [Indexed: 10/19/2022]
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139
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Kumaran KS, Prince PSM. Preventive effect of caffeic acid on lysosomal dysfunction in isoproterenol-induced myocardial infarcted rats. J Biochem Mol Toxicol 2010; 24:115-22. [PMID: 20391626 DOI: 10.1002/jbt.20319] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We evaluated the preventive effect of caffeic acid (CA) on lysosomal enzymes in isoproterenol (ISO)-treated myocardial infarcted rats. Male albino Wistar rats were pretreated with CA (15 mg/kg) daily for a period of 10 days. After the pretreatment period, ISO (100 mg/kg) was subcutaneously injected to rats twice at an interval of 24 h. The activity of serum creatine kinase-MB and lactate dehydrogenase was increased significantly (P < 0.05) in ISO-induced myocardial infarcted rats. The levels of plasma thiobarbituric acid reactive substances and lipid hydroperoxides were significantly (P < 0.05) increased, and the level of plasma-reduced glutathione was significantly (P < 0.05) decreased in ISO-induced myocardial infarcted rats. The activities of lysosomal enzymes (beta-glucuronidase, beta-N-acetylglucosaminidase, beta-galactosidase, cathepsin-B and cathepsin-D) were increased significantly (P < 0.05) in the serum and heart of ISO-induced myocardial infarcted rats. ISO induction also resulted in decreased stability of membranes, which was reflected by lowered activities of beta-glucuronidase and cathepsin-D in different fractions except cytosol. Pretreatment with CA (15 mg/kg) to ISO-treated rats significantly (P < 0.05) prevented the changes in the activities of cardiac marker enzymes, the levels of lipid peroxidation products, reduced glutathione and the activities of lysosomal enzymes in the serum, heart, and subcellular fractions. Oral treatment with CA (15 mg/kg) to normal control rats did not show any significant effect. Thus, the results of our study showed that CA prevented the lysosomal membrane damage against ISO-induced myocardial infarction. The observed effects of CA are due to membrane-stabilizing, antilipo peroxidative, and antioxidant effects.
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Affiliation(s)
- K Senthil Kumaran
- Department of Biochemistry and Biotechnology, Annamalai University, Annamalai Nagar 608 002, Tamil Nadu, India
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140
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Park HJ, Davis SR, Liang HY, Rosenberg DW, Bruno RS. Chlorogenic acid differentially alters hepatic and small intestinal thiol redox status without protecting against azoxymethane-induced colon carcinogenesis in mice. Nutr Cancer 2010; 62:362-70. [PMID: 20358474 DOI: 10.1080/01635580903407239] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Colorectal cancer (CRC) is a leading cause of cancer-related deaths in the United States. Epidemiological data have suggested that coffee consumption is inversely related to CRC risk, which may be attributed to chlorogenic acid (CGA), an ester of caffeic acid (CA) and quinic acid. This study was conducted to determine whether chronic dietary CGA supplementation would attenuate tumorigenesis and oxidative stress in a mouse model of azoxymethane (AOM)-induced colon cancer. Mice (4-wk old; n = 15/group) were fed CGA (0%, 0.01%, or 0.1%) for 20 wk and received 6 weekly intraperitoneal AOM injections (10 mg/kg). CGA and CA dose-dependently accumulated in the small intestinal mucosa. AOM induced (P < 0.05) colonic aberrant crypt foci (14.2 +/- 1.9/field) and tumors (14.6 +/- 1.1/colon), which were correlated (r = .677; P < 0.05), and CGA at either dose did not reduce tumorigenesis. Hepatic GSH/GSSG and Cys/CySS ratios were unaffected by AOM, but CGA at 0.1% increased these ratios by decreasing GSSG and CySS. CGA did not affect the ratios of small intestinal GSH/GSSG or Cys/CySS, which were decreased in response to AOM treatment. Collectively, these data indicated that CGA did not protect against AOM-induced tumorigenesis but affected hepatic thiol redox status in this colon cancer model.
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Affiliation(s)
- Hea Jin Park
- University of Connecticut, Storrs, Connecticut 06269-4017, USA
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141
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Karthikesan K, Pari L, Menon VP. Protective effect of tetrahydrocurcumin and chlorogenic acid against streptozotocin–nicotinamide generated oxidative stress induced diabetes. J Funct Foods 2010. [DOI: 10.1016/j.jff.2010.04.001] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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142
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Ye XL, Huang WW, Chen Z, Li XG, Li P, Lan P, Wang L, Gao Y, Zhao ZQ, Chen X. Synergetic effect and structure-activity relationship of 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors from Crataegus pinnatifida Bge. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2010; 58:3132-3138. [PMID: 20131788 DOI: 10.1021/jf903337f] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR) inhibitors from hawthorn fruit ( Crataegus pinnatifida Bge.) were isolated and evaluated for their antihyperlipidemic effect induced by high-fat diet in mice. After being further purified with silica and polyamide column chromatography from the fractions (fractions A, F, H, and G) with a high inhibitory rate (IR) to HMGR, 24 chromatographic fractions were obtained, including 8 active fractions with a high IR to HMGR. However, the total inhibitory activity of 24 fractions was decreased by about 70%. From eight active fractions, four compounds were obtained by recrystallization and identified as quercetin (a), hyperoside (b), rutin (c), and chlorogenic acid (d), the contents of which in hawthorn EtOH extract were 0.16, 0.32, 1.45, and 0.95%, respectively. The IR values of compounds a-d to HMGR were 6.28, 9.64, 23.53, and 10.56% at the corresponding concentrations of 0.16, 0.32, 1.45, and 0.95 mg/mL, respectively. It was discovered that the IR of a mixture (2.85 mg/mL) matching the original percentage of compounds a-d in hawthorn EtOH extract was up to 79.5%, much higher than that of the single compound and the total IR of these four compounds (50.01%). The in vivo results also revealed that the mixture had a more significant lipid-lowering efficacy than the monomers. Structure-activity relationship revealed the inhibitory activity and lowering-lipid ability of compounds a-c decreased with increasing glycoside numbers. It was concluded that there were synergetic effects on inhibiting HMGR and lowering lipid among compounds a-d, and the weak hydrophilic ability benefits the inhibition to HMGR and lowering-lipid efficacy.
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Affiliation(s)
- Xiao-Li Ye
- School of Life Science, Southwest University, Chongqing 400715, China
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143
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Cho AS, Jeon SM, Kim MJ, Yeo J, Seo KI, Choi MS, Lee MK. Chlorogenic acid exhibits anti-obesity property and improves lipid metabolism in high-fat diet-induced-obese mice. Food Chem Toxicol 2010. [DOI: 10.1016/j.fct.2010.01.003 pmid: 20064576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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144
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Rossato SB, Haas C, Raseira MDCB, Moreira JCF, Zuanazzi JAS. Antioxidant potential of peels and fleshes of peaches from different cultivars. J Med Food 2010; 12:1119-26. [PMID: 19857078 DOI: 10.1089/jmf.2008.0267] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Increasing recent interest in nutraceuticals and functional foods has led researchers to investigate the antioxidant potential of several fruits. This article evaluates the antioxidant potential and reactivity based on luminol-enhanced chemiluminescence capacity of peach extracts (peels and fleshes) and the contribution of a major compound present in these extracts to antioxidant potential and reactivity. The results obtained showed that the extracts of peels and fleshes of Maciel, Leonense, and Eldorado peach cultivars present free radical scavenging activity in all concentrations tested, with a concentration-dependent action. The immediate inhibition of chemiluminescence and the duration of this inhibition were significantly higher with the extracts than with the major compound (chlorogenic acid) alone, and it can be due to a synergistic or additive effect of other antioxidants present in the extracts. The 50% inhibitory concentration (IC(50)) values for peach extract and chlorogenic acid were 1.19 microg/mL and 8.43 microg/mL, respectively, when total radical-trapping antioxidant potential was evaluated, whereas IC(50) values of 0.41 microg/mL and 1.89 microg/mL was found when total antioxidant reactivity was evaluated in peach extract and chlorogenic acid, respectively. Chlorogenic acid presented a good contribution to antioxidant reactivity and potential, but the fruit extracts provide better antioxidant action. Peach could be of great interest as an important antioxidant source including chlorogenic acid, and it may provide health-promoting advantages to consumers by intake of this fruit or by utilization of its peels as antioxidant sources in industry.
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Affiliation(s)
- Simone B Rossato
- Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
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145
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Renouf M, Marmet C, Guy P, Fraering AL, Longet K, Moulin J, Enslen M, Barron D, Cavin C, Dionisi F, Rezzi S, Kochhar S, Steiling H, Williamson G. Nondairy creamer, but not milk, delays the appearance of coffee phenolic acid equivalents in human plasma. J Nutr 2010; 140:259-63. [PMID: 20007338 DOI: 10.3945/jn.109.113027] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Chlorogenic acids (CGA) are antioxidants found in coffee. They are becoming of interest for their health-promoting effects, but bioavailability in humans is not well understood. We hypothesized that adding whole milk or sugar and nondairy creamer to instant coffee might modulate the bioavailability of coffee phenolics. Nine healthy participants were asked to randomly drink, in a crossover design, instant coffee (Coffee); instant coffee and 10% whole milk (Milk); or instant coffee, sugar, and nondairy creamer already premixed (Sugar/NDC). All 3 treatments provided the same amount of total CGA (332 mg). Blood was collected for 12 h after ingestion and plasma samples treated using a liquid-liquid extraction method that included a full enzymatic cleavage to hydrolyze all CGA and conjugates into phenolic acid equivalents. Hence, we focused our liquid chromatography-Electrospray ionization-tandem MS detection and quantification on caffeic acid (CA), ferulic acid (FA), and isoferulic acid (iFA) equivalents. Compared with a regular black instant coffee, the addition of milk did not significantly alter the area under the curve (AUC), maximum plasma concentration (C(max)), or the time needed to reach C(max) (T(max)). The C(max) of CA and iFA were significantly lower and the T(max) of FA and iFA significantly longer for the Sugar/NDC group than for the Coffee group. However, the AUC did not significantly differ. As a conclusion, adding whole milk did not alter the overall bioavailability of coffee phenolic acids, whereas sugar and nondairy creamer affected the T(max) and C(max) but not the appearance of coffee phenolics in plasma.
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Affiliation(s)
- Mathieu Renouf
- Nestlé Research Center, Vers chez Les Blancs, 1000 Lausanne 26, Switzerland.
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146
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Uto-Kondo H, Ayaori M, Ogura M, Nakaya K, Ito M, Suzuki A, Takiguchi SI, Yakushiji E, Terao Y, Ozasa H, Hisada T, Sasaki M, Ohsuzu F, Ikewaki K. Coffee consumption enhances high-density lipoprotein-mediated cholesterol efflux in macrophages. Circ Res 2010; 106:779-87. [PMID: 20075335 DOI: 10.1161/circresaha.109.206615] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
RATIONALE Association of habitual coffee consumption with coronary heart disease morbidity and mortality has not been established. We hypothesized that coffee may enhance reverse cholesterol transport (RCT) as the antiatherogenic properties of high-density lipoprotein (HDL). OBJECTIVE This study was to investigate whether the phenolic acids of coffee and coffee regulates RCT from macrophages in vitro, ex vivo and in vivo. METHODS AND RESULTS Caffeic acid and ferulic acid, the major phenolic acids of coffee, enhanced cholesterol efflux from THP-1 macrophages mediated by HDL, but not apoA-I. Furthermore, these phenolic acids increased both the mRNA and protein levels of ATP-binding cassette transporter (ABC)G1 and scavenger receptor class B type I (SR-BI), but not ABCA1. Eight healthy volunteers were recruited for the ex vivo study, and blood samples were taken before and 30 minutes after consumption of coffee or water in a crossover study. The mRNA as well as protein levels of ABCG1, SR-BI, and cholesterol efflux by HDL were increased in the macrophages differentiated under autologous sera obtained after coffee consumption compared to baseline sera. Finally, effects of coffee and phenolic acid on in vivo RCT were assessed by intraperitoneally injecting [(3)H]cholesterol-labeled acetyl low-density lipoprotein-loaded RAW264.7 cells into mice, then monitoring appearance of (3)H tracer in plasma, liver, and feces. Supporting in vitro and ex vivo data, ferulic acid was found to significantly increase the levels of (3)H tracer in feces. CONCLUSIONS Coffee intake might have an antiatherogenic property by increasing ABCG1 and SR-BI expression and enhancing HDL-mediated cholesterol efflux from the macrophages via its plasma phenolic acids.
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Affiliation(s)
- Harumi Uto-Kondo
- Department of Internal Medicine, National Defense Medical College, 3-2 Namiki, Tokorozawa, Saitama, Japan
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147
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Cho AS, Jeon SM, Kim MJ, Yeo J, Seo KI, Choi MS, Lee MK. Chlorogenic acid exhibits anti-obesity property and improves lipid metabolism in high-fat diet-induced-obese mice. Food Chem Toxicol 2010; 48:937-43. [PMID: 20064576 DOI: 10.1016/j.fct.2010.01.003] [Citation(s) in RCA: 513] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2009] [Revised: 12/03/2009] [Accepted: 01/05/2010] [Indexed: 11/17/2022]
Abstract
This study investigated the efficacy of chlorogenic acid on altering body fat in high-fat diet (37% calories from fat) induced-obese mice compared to caffeic acid. Caffeic acid or chlorogenic acid was supplemented with high-fat diet at 0.02% (wt/wt) dose. Both caffeic acid and chlorogenic acid significantly lowered body weight, visceral fat mass and plasma leptin and insulin levels compared to the high-fat control group. They also lowered triglyceride (in plasma, liver and heart) and cholesterol (in plasma, adipose tissue and heart) concentrations. Triglyceride content in adipose tissue was significantly lowered, whereas the plasma adiponectin level was elevated by chlorogenic acid supplementation compared to the high-fat control group. Body weight was significantly correlated with plasma leptin (r=0.894, p<0.01) and insulin (r=0.496, p<0.01) levels, respectively. Caffeic acid and chlorogenic acid significantly inhibited fatty acid synthase, 3-hydroxy-3-methylglutaryl CoA reductase and acyl-CoA:cholesterol acyltransferase activities, while they increased fatty acid beta-oxidation activity and peroxisome proliferator-activated receptors alpha expression in the liver compared to the high-fat group. These results suggest that caffeic acid and chlorogenic acid improve body weight, lipid metabolism and obesity-related hormones levels in high-fat fed mice. Chlorogenic acid seemed to be more potent for body weight reduction and regulation of lipid metabolism than caffeic acid.
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Affiliation(s)
- Ae-Sim Cho
- Department of Nutrition Education, Graduate School of Education, Sunchon National University, Suncheon 540-742, Republic of Korea
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148
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Quantitative analysis of plasma caffeic and ferulic acid equivalents by liquid chromatography tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:3965-74. [DOI: 10.1016/j.jchromb.2009.10.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2009] [Revised: 09/28/2009] [Accepted: 10/05/2009] [Indexed: 11/20/2022]
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149
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Renouf M, Guy PA, Marmet C, Fraering AL, Longet K, Moulin J, Enslen M, Barron D, Dionisi F, Cavin C, Williamson G, Steiling H. Measurement of caffeic and ferulic acid equivalents in plasma after coffee consumption: Small intestine and colon are key sites for coffee metabolism. Mol Nutr Food Res 2009; 54:760-6. [DOI: 10.1002/mnfr.200900056] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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150
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Yeh CT, Huang WH, Yen GC. Antihypertensive effects of Hsian-tsao and its active compound in spontaneously hypertensive rats. J Nutr Biochem 2009; 20:866-75. [DOI: 10.1016/j.jnutbio.2008.07.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Revised: 07/27/2008] [Accepted: 07/31/2008] [Indexed: 11/25/2022]
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