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Quercetin Induces Apoptosis in HepG2 Cells via Directly Interacting with YY1 to Disrupt YY1-p53 Interaction. Metabolites 2023; 13:metabo13020229. [PMID: 36837850 PMCID: PMC9968089 DOI: 10.3390/metabo13020229] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/28/2023] [Accepted: 02/01/2023] [Indexed: 02/08/2023] Open
Abstract
Quercetin is a flavonol found in edible plants and possesses a significant anticancer activity. This study explored the mechanism by which quercetin prevented liver cancer via inducing apoptosis in HepG2 cells. Quercetin induced cell proliferation and apoptosis through inhibiting YY1 and facilitating p53 expression and subsequently increasing the Bax/Bcl-2 ratio. The results revealed that YY1 knockdown promoted apoptosis, whilst YY1 overexpression suppressed apoptosis via direct physical interaction between YY1 and p53 to regulate the p53 signaling pathway. Molecular docking using native and mutant YY1 proteins showed that quercetin could interact directly with YY1, and the binding of quercetin to YY1 significantly decreased the docking energy of YY1 with p53 protein. The interactions between quercetin and YY1 protein included direct binding and non-bonded indirect interactions, as confirmed by cellular thermal shift assay, UV-Vis absorption spectroscopy, fluorescence spectroscopy and circular dichroism spectroscopy. It was likely that quercetin directly bound to YY1 protein to compete with p53 for the binding sites of YY1 to disrupt the YY1-p53 interaction, thereby promoting p53 activation. This study provides insights into the mechanism underlying quercetin's anticancer action and supports the development of quercetin as an anticancer therapeutic agent.
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Effects of Pineapple Peel Ethanolic Extract on the Physicochemical and Textural Properties of Surimi Prepared from Silver Carp ( Hypophthalmichthys molitrix). Foods 2022. [PMCID: PMC9601345 DOI: 10.3390/foods11203223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The effects of ethanolic pineapple peel extract (PPE) powder at various concentrations (0–1.50%, w/w) on the gelling properties of silver carp surimi were investigated. The pineapple peel extract produced with 0–100% ethanol, revealed that 100% ethanol had the highest bioactive properties. Surimi gels with added PPE powder demonstrated improved gel strength (504.13 ± 11.78 g.cm) and breaking force (511.64 ± 11.80 g) up to 1% PPE addition; however, as PPE concentration increased beyond 1%, the gel strength decreased. Similarly, with the addition of 1% PPE powder, more hydrophobic bonds and fewer sulfhydryl groups and free amino groups were seen. However, the gels with PPE powder added showed a slight reduction in the whiteness of the surimi gels. FTIR analysis indicated that the fortification with PPE powder brought about the secondary structure of myofibrillar proteins; peaks shifted to the β-sheet region (PPE gels) from the α-helix region (control). SEM analysis indicated that the gel with 1% PPE powder had a relatively organized, finer and denser gel architecture. Overall results suggested that the addition of PPE powder up to 1% to the surimi gels enhanced the gelling properties as well as the microstructure of the surimi.
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de Freitas MA, da Cruz RP, dos Santos ATL, Almeida-Bezerra JW, Machado AJT, dos Santos JFS, Rocha JE, Boligon AA, Bezerra CF, de Freitas TS, do Nascimento Silva MK, Mendonça ACAM, da Costa JGM, Coutinho HDM, da Cunha FAB, Filho JR, Morais-Braga MFB. HPLC-DAD analysis and antimicrobial activities of Spondias mombin L. (Anacardiaceae). 3 Biotech 2022; 12:61. [PMID: 35186658 PMCID: PMC8818589 DOI: 10.1007/s13205-022-03126-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 01/23/2022] [Indexed: 12/18/2022] Open
Abstract
Spondias mombin is used in the folk medicine for the treatment of diarrhea and dysentery, indicating that extracts obtained from this species may present pharmacological activities against pathogenic microorganisms. The purpose of this work was to investigate the chemical composition and evaluate the antimicrobial activity of extracts obtained from the leaves (aqueous) and bark (hydroethanolic) of S. mombin both as single treatments and in combination with conventional drugs. Following a qualitative chemical prospection, the extracts were analyzed by HPLC-DAD. The antimicrobial activities were evaluated by microdilution. The combined activity of drugs and extracts was verified by adding a subinhibitory concentration of the extract in the presence of variable drug concentrations. The Minimum Fungicidal Concentration (MFC) was determined by a subculture of the microdilution test, while the effect of the in vitro treatments on morphological transition was analyzed by subculture in moist chambers. While the qualitative analysis detected the presence of phenols and flavonoids, the HPLC analysis identified quercetin, caffeic acid, and catechin as major components in the leaf extract, whereas kaempferol and quercetin were found as major compounds in the bark extract. The extracts showed effective antibacterial activities only against the Gram-negative strains. With regard to the combined activity, the leaf extract potentiated the action of gentamicin and imipenem (against Staphylococcus aureus), while the bark extract potentiated the effect of norfloxacin (against S. aureus), imipenem (against Escherichia coli), and norfloxacin (against Pseudomonas aeruginosa). A more significant antifungal (fungistatic) effect was achieved with the bark extract (even though at high concentrations), which further enhanced the activity of fluconazole. The extracts also inhibited the emission of filaments by Candida albicans and Candida tropicalis. Together, these findings suggest that that the extract constituents may act by favoring the permeability of microbial cells to conventional drugs, as well as by affecting virulence mechanisms in Candida strains.
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4
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Phenolic-protein interactions in foods and post ingestion: Switches empowering health outcomes. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.08.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Tafazoli A, Tafazoli Moghadam E. Camellia Sinensis Mouthwashes in Oral Care: a Systematic Review. JOURNAL OF DENTISTRY (SHIRAZ, IRAN) 2020; 21:249-262. [PMID: 33344675 PMCID: PMC7737926 DOI: 10.30476/dentjods.2020.83204.1045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herbal products are increasingly growing in the oral care market. Some of the related herbal compounds in this field have considerable clinical evidence for use in mouthwashes in their background. Camellia sinensis or tea plant has attracted numerous researchers of dentistry and pharmaceutical sciences, in recent years, for its biologic and medicinal properties. The effects such as anti-septic, anti-oxidative, and anti-inflammatory activities have made this plant a suitable candidate for preparation of mouthwashes. In this systematic review, we tried to find, evaluate, and categorize the sparse evidence in medical literature about Camellia sinensis mouthwashes. We explored three scientific databases with keywords including tea, dental care, Camellia sinensis, and mouthwashes and found 69 relevant studies including 41 randomized controlled trials (RCTs), which are generally proposing anti-microbial, anti-plaque, and analgesic indications for these tea formulations. Considering the main trend in clinical evidence and favorable safety profile, Camellia sinensis products are able to act as antiseptic, anti-plaque, and anti-inflammatory agents and can be used as useful mouthwashes in the future clinical studies and practice.
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Affiliation(s)
- Ali Tafazoli
- Dept. Clinical Pharmacy, Faculty of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ehsan Tafazoli Moghadam
- Dept. of Orthodontics, School of Dentistry, Qazvin University of Medical Sciences, Qazvin, Iran
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Mardaneh J, Beyzaei H, Hashemi SH, Ghasemi B, Rahdar A. Comparative Evaluation of the Inhibitory Potential of Synthetic N-Heterocycles, Cu/Fe 3O 4@SiO 2 Nanocomposites and Some Natural Products against Non-Resistant and Antibiotic-Resistant Acinetobacter baumannii. PHARMACEUTICAL SCIENCES 2020. [DOI: 10.34172/ps.2020.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Background:
Acinetobacter baumannii is a common infectious agent in hospitals. New antimicrobial agents are identified and prepared to combat these bacterial pathogens. In this context, the blocking potentials of a series of synthesized N-heterocyclic compounds, Cu/Fe3O4@SiO2 nanocomposites, glycine, poly-L-lysine, nisin and hydroalcoholic extracts of Trachyspermum ammi, Curcuma longa and green tea catechins were evaluated against non-resistant and multidrug-resistant strains of A. baumannii. Methods: Solutions of heterocyclic derivatives and hydroalcoholic extracts of Trachyspermum ammi, Curcuma longa and green tea catechins were prepared at initial concentration of 10240 μg ml-1 in 10% DMSO. Other compounds were dissolved in water at the same concentrations. Their in vitro inhibitory activity was assessed by determination of IZD, MIC and MBC values. Results: Glycine, poly-L-lysine, nisin, Curcuma longa and green tea catechins extracts, and thiazoles 3a, 3d and 3f were ineffective at their initial concentrations. Heterocyclic derivatives 7a-f, 3c, 3e and 3h, Cu/Fe3O4@SiO2 nanocomposites and Trachyspermum ammi extract could block the growth of bacterial strains with IZDs (7.40-15.51 mm), MICs (32-1024 µg ml-1) and MBCs (128-2048 µg ml-1). Conclusion: Among synthetic chemicals and natural products, the best antimicrobial effects were recorded with (E)-2-(5-acetyl-4-methylthiazol-2-yl)-2-(thiazolidin-2-ylidene)acetonitrile (7b) and the extract of Trachyspermum ammi. It is imperative that their toxic and histopathologic effects were assessed in future researches. It is predicted that the essential oil of Trachyspermum ammi will improve its antibacterial activities.
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Affiliation(s)
- Jalal Mardaneh
- Department of Microbiology, School of Medicine, Social Determinants of Health Research Center, Gonabad University of Medical Sciences, Gonabad, Iran
| | - Hamid Beyzaei
- Department of Chemistry, Faculty of Science, University of Zabol, Zabol, Iran
| | - Seyed Hadi Hashemi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Zabol University, Zabol, Iran
| | - Behzad Ghasemi
- Torbat Jam Faculty of Medical Sciences, Torbat Jam, Iran
| | - Abbas Rahdar
- Department of Physics, Faculty of Science, University of Zabol, Zabol, Iran
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Gancar M, Kurin E, Bednarikova Z, Marek J, Mucaji P, Nagy M, Gazova Z. Amyloid Aggregation of Insulin: An Interaction Study of Green Tea Constituents. Sci Rep 2020; 10:9115. [PMID: 32499589 PMCID: PMC7272432 DOI: 10.1038/s41598-020-66033-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 05/06/2020] [Indexed: 12/15/2022] Open
Abstract
Exogenous insulin, used as a therapeutic agent for diabetes, forms insoluble deposits containing amyloid fibrillar structures near the administration site. We have analyzed the in vitro anti-amyloid activity of four green tea constituents: (-)-epigallocatechin gallate (EGCG), (-)-epicatechin (EC), gallic acid (GA), caffeine (CF), and their equimolar mixtures. Regarding individually tested compounds, only EGCG inhibited the fibrillization process. The individual EC, GA, and CF molecules were ineffective. The presence of EGCG in equimolar combinations with GA, EC, or CF was required for the inhibitory activity of most mixtures. Molecular docking revealed that EGCG interacts with an essential amyloidogenic region of insulin chain B. Individually inactive GA had a potentiating effect on the activity of EGCG. In contrast, EC and CF had a negative impact on the activity of the mixtures. We have observed diverse morphology and the amount of insulin amyloid aggregates formed in the presence of studied compounds. The distinct types of amyloid aggregates created in vitro in the presence of EGCG and other green tea constituents were characterized. Results indicate that the biological activity of individual molecules is not directly applicable to the pooled samples effects prediction.
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Affiliation(s)
- Miroslav Gancar
- Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01, Kosice, Slovakia
| | - Elena Kurin
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, 832 32, Bratislava, Slovakia.
| | - Zuzana Bednarikova
- Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01, Kosice, Slovakia
| | - Jozef Marek
- Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01, Kosice, Slovakia
| | - Pavel Mucaji
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, 832 32, Bratislava, Slovakia
| | - Milan Nagy
- Department of Pharmacognosy and Botany, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, 832 32, Bratislava, Slovakia
| | - Zuzana Gazova
- Department of Biophysics, Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01, Kosice, Slovakia.
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Rodrigues Costa A, Bezerra JWA, Pereira da Cruz R, de Freitas MA, da Silva VB, Neto JC, dos Santos ATL, Bezerra Morais Braga MF, da Silva LA, Ivaneide Rocha M, Kamdem JP, Iriti M, Vitalini S, Duarte AE, Barros LM. In vitro Antibiotic and Modulatory Activity of Mesosphaerum suaveolens (L.) Kuntze against Candida strains. Antibiotics (Basel) 2020; 9:E46. [PMID: 32012710 PMCID: PMC7168177 DOI: 10.3390/antibiotics9020046] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/20/2020] [Accepted: 01/24/2020] [Indexed: 11/24/2022] Open
Abstract
The emergence of fungal resistance to commercial drugs has been a major problem for the WHO. In this context, research with natural products is promising in the discovery of new active substances. Thus, this work evaluated the antifungal effect of a medicinal plant (i.e., Mesosphaerum suaveolens) against strains of the genus Candida, tested the combined effect with the drug fluconazole, and, finally, determined the phenolic constituents present in the species. Initially, aqueous extracts of leaves (AELMs) and aerial parts (AEAPMs) of the species were prepared. For microbiological assays, the minimum fungicidal concentration was determined by broth microdilution, and the combined effect of fluconazole extracts were verified by sub-inhibitory microdilution concentrations (CFM/8) followed by spectrophotometric readings which were used to determine the IC50. HPLC detected the presence of flavonoids and phenolic acids, detecting eight compounds present in the samples of which caffeic acid and quercetin were major components. The AELMs modulated fluconazole activity since it decreased fluconazole's IC50 from 7.8 µg/mL to an IC50 of 4.7 µg/mL (CA LM 77) and from 28.8 µg/mL to 18.26 µg/mL (CA INCQS 40006) for the C. albicans strains. The AEAPMs were able to potentiate the effect of fluconazole more effectively than the AELMs. Such an effect was significant for the 16 µg/mL concentration for CA LM 77 and 32 µg/mL for CA INCQS 40006. The AEAPMs as well as the AELMs presented clinically relevant activities for C. tropicalis strains. For the C. tropicalis LM 23 strain, the AEPMs obtained an IC50 of 25 µg/mL and the AELMs an IC50 of 359.9 µg/mL.
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Affiliation(s)
- Adrielle Rodrigues Costa
- Postgraduate Program in Molecular Bioprospecting, Regional University of Cariri (URCA), Crato 63122-290, CE, Brazil; (A.R.C.); (V.B.d.S.)
| | | | - Rafael Pereira da Cruz
- Laboratory of Applied Mycology of Cariri, Regional University of Cariri (URCA), Crato 63122-290, CE, Brazil; (R.P.d.C.); (M.A.d.F.); (A.T.L.d.S.)
| | - Maria Audilene de Freitas
- Laboratory of Applied Mycology of Cariri, Regional University of Cariri (URCA), Crato 63122-290, CE, Brazil; (R.P.d.C.); (M.A.d.F.); (A.T.L.d.S.)
| | - Viviane Bezerra da Silva
- Postgraduate Program in Molecular Bioprospecting, Regional University of Cariri (URCA), Crato 63122-290, CE, Brazil; (A.R.C.); (V.B.d.S.)
| | - João Cruz Neto
- Nursing Course at the Regional University of Cariri (URCA), Crato-CE-Brazil;
| | - Antonia Thassya Lucas dos Santos
- Laboratory of Applied Mycology of Cariri, Regional University of Cariri (URCA), Crato 63122-290, CE, Brazil; (R.P.d.C.); (M.A.d.F.); (A.T.L.d.S.)
| | - Maria Flaviana Bezerra Morais Braga
- Laboratory of Applied Mycology of Cariri, Regional University of Cariri (URCA), Crato 63122-290, CE, Brazil; (R.P.d.C.); (M.A.d.F.); (A.T.L.d.S.)
| | - Leomara Andrade da Silva
- Postgraduate Program in Botany – National Amazon Research Institute (INPA), Manaus 69067-375, AM, Brazil;
| | - Maria Ivaneide Rocha
- Biology and Toxicology Laboratory, University of Regional Cariri (URCA), Crato 63122-290, CE, Brazil (J.P.K.); (A.E.D.)
| | - Jean Paul Kamdem
- Biology and Toxicology Laboratory, University of Regional Cariri (URCA), Crato 63122-290, CE, Brazil (J.P.K.); (A.E.D.)
| | - Marcello Iriti
- Department of Agricultural and Environmental Sciences, Milan State University, 20133 Milan, Italy;
| | - Sara Vitalini
- Department of Agricultural and Environmental Sciences, Milan State University, 20133 Milan, Italy;
| | - Antonia Eliene Duarte
- Biology and Toxicology Laboratory, University of Regional Cariri (URCA), Crato 63122-290, CE, Brazil (J.P.K.); (A.E.D.)
| | - Luiz Marivando Barros
- Vegetable Ecophysiology Laboratory, Regional University of Cariri, Crato 63122-290, CE, Brazil;
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Smiljković M, Kostić M, Stojković D, Glamočlija J, Soković M. Could Flavonoids Compete with Synthetic Azoles in Diminishing Candida albicans Infections? A Comparative Review Based on In Vitro Studies. Curr Med Chem 2019; 26:2536-2554. [PMID: 29956609 DOI: 10.2174/0929867325666180629133218] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 05/17/2018] [Accepted: 05/17/2018] [Indexed: 12/11/2022]
Abstract
Flavonoids are polyphenolic compounds with already confirmed various health benefits. This review will shed light on flavonoids as potential antifungals in Candida albicans infections. C. albicans is an opportunistic pathogen able to cause serious health issues due to numerous virulence factors amplifying its pathogenicity. One of the most important virulence factors is Candida ability to form biofilms which are highly resistant to the treatment of antifungal drugs; making diminishing of this pathogen even more challenging. This review will focus on current knowledge on individual flavonoid compounds having the potential to deal with C. albicans in vitro, with special turn on antibiofilm potential and insight into the mode of action, where available. Majority of the commercial drugs for the treatment of candidiasis belong to azole class, so the activity of flavonoids will be compared with the activity of newly synthetized azole compounds, as well as with azole drugs that are already on the market as official therapeutics. This literature review will provide pros and cons for pushing future research towards exploring novel synthetic azoles or further examination of a wide pallet of natural flavonoids.
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Affiliation(s)
- Marija Smiljković
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Marina Kostić
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Dejan Stojković
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Jasmina Glamočlija
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
| | - Marina Soković
- Department of Plant Physiology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia
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Chen X, Du Y, Wu L, Xie J, Chen X, Hu B, Wu Z, Yao Q, Li Q. Effects of Tea-Polysaccharide Conjugates and Metal Ions on Precipitate Formation by Epigallocatechin Gallate and Caffeine, the Key Components of Green Tea Infusion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3744-3751. [PMID: 30788964 DOI: 10.1021/acs.jafc.8b06681] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The mechanism of tea-infusion precipitation is not clear. Epigallocatechin gallate (EGCG) and caffeine (CAF) are the core components of green tea infusion precipitate. The critical precipitation concentration ( CCPC) of EGCG-CAF mixed aqueous solutions was assayed through a turbidity assay performed at 25 °C and verified by a differential-scanning calorimeter (DSC) for reliability. Different concentrations of the green tea polysaccharide conjugate fraction (gTPC-D), with a molecular weight of 2.32 × 105 Da, and of metal ions (K+, Mg2+, Ca2+, and Al3+) were respectively introduced into the mixed solution to study their effects on CCPC. On the basis of the changed CCPC, the clarification-precipitation phase diagrams of the mixed aqueous solutions were constructed. By calculating the integral area of the clarification phase, it was determined that the four metal ions and gTPC-D could accelerate precipitate formation with a dose-response relationship; among the metal ions, the effect of Al3+ is the strongest, followed by that of Ca2+.
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Affiliation(s)
- Xiaoqiang Chen
- College of Bioengineering and Food , Hubei University of Technology , Wuhan 430068 , China
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University (BTBU) , Beijing 100048 , China
| | - Yu Du
- College of Bioengineering and Food , Hubei University of Technology , Wuhan 430068 , China
| | - Long Wu
- College of Bioengineering and Food , Hubei University of Technology , Wuhan 430068 , China
| | - Jianchun Xie
- Beijing Advanced Innovation Center for Food Nutrition and Human Health , Beijing Technology and Business University (BTBU) , Beijing 100048 , China
| | - Xueling Chen
- Institute for Farm Products Processing and Nuclear-agricultural Technology , Hubei Academy of Agricultural Sciences , Wuhan 430064 , China
| | - Binbin Hu
- Hubei Province Tea Deep Processing Engineering Technology Research Center , Yichang 443000 , China
| | - Zhengqi Wu
- College of Bioengineering and Food , Hubei University of Technology , Wuhan 430068 , China
| | - Qifeng Yao
- College of Bioengineering and Food , Hubei University of Technology , Wuhan 430068 , China
| | - Qian Li
- College of Bioengineering and Food , Hubei University of Technology , Wuhan 430068 , China
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11
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Behbehani JM, Irshad M, Shreaz S, Karched M. Synergistic effects of tea polyphenol epigallocatechin 3-O-gallate and azole drugs against oral Candida isolates. J Mycol Med 2019; 29:158-167. [PMID: 30797684 DOI: 10.1016/j.mycmed.2019.01.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/27/2019] [Accepted: 01/31/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND The antifungal drug resistance has become an emerging problem in the management of candida infections worldwide. The objective of this study was to examine the efficacy of epigallocatechin 3-O-gallate (EGCG) alone and in combination with fluconazole/ketoconazole drugs against oral Candida isolates. METHODS Minimum inhibitory concentration (MIC) and minimum fungicidal concentrations (MFC) of EGCG against 60 oral Candida isolates and 4 ATCC strains were determined. Synergism of EGCG with azole drugs was evaluated by checkerboard micro-dilution method and calculated fractional inhibitory concentration index (FICI). Candida cells' ultrastructure was studied by electron microscopy. RESULTS MIC and MFC values of EGCG were in the range of 3.91-15.63 and 15.63-31.25μg/mL, respectively. Minimum biofilm inhibitory concentration (MBIC) range of EGCG (62.5-125μg/mL), was less than the ketoconazole (64-256μg/mL) and fluconazole (128-512μg/mL). The combination of EGCG with fluconazole/ketoconazole exhibited synergistic effects (ΣFICI≤0.50). EGCG with azole drugs showed high sensitivity against the tested isolates in growth curve assays. Against the biofilm, the susceptibility of fluconazole/ketoconazole significantly increased (3 to 5 fold), after combination with EGCG (MBIC/4) (P≤0.001). Electron microscopy of EGCG treated cells showed deformation of cell structure, ruptured cell wall and release of intracellular content. In molecular docking experiments, a strong interaction was observed between EGCG and fungal cell membrane molecule ergosterol. CONCLUSION We conclude that EGCG synergistically enhanced the antifungal potential of azole drugs. The synergistic potential of EGCG might be helpful in preventing the development of drug resistance, in lowering the drug dosage, and thus minimizing adverse effects.
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Affiliation(s)
- J M Behbehani
- Department of Restorative Sciences, Faculty of Dentistry, Health Sciences Center, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait.
| | - M Irshad
- Department of Bioclinical Sciences, Faculty of Dentistry, Health Sciences Center, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait.
| | - S Shreaz
- Department of Bioclinical Sciences, Faculty of Dentistry, Health Sciences Center, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait
| | - M Karched
- Department of Bioclinical Sciences, Faculty of Dentistry, Health Sciences Center, Kuwait University, P.O. Box 24923, Safat 13110, Kuwait
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12
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Akroum S. Antifungal activity of Camellia sinensis crude extracts against four species of Candida and Microsporum persicolor. J Mycol Med 2018; 28:424-427. [PMID: 29960870 DOI: 10.1016/j.mycmed.2018.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 06/11/2018] [Accepted: 06/16/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVE OF THE STUDY Candidiasis and dermatophytoses are benign infections in humans and animals, but they are very dreaded diseases in immunocompromised individuals. These infections become resistant to different treatments which make them more dangerous. In this work, we tried to find a new way for treating them. So we were interested in the antifungal activity of Camellia sinensis (tea); this plant is known to have many health benefits. MATERIALS AND METHODS We tested the ability of the acetone and aqueous crude extracts of the plant to inhibit in vitro the growth of Candida albicans, Candida glabrata, Candida tropicalis, Candida krusei and Microsporum persicolor. Then, the antifungal activity against these species was tested in vivo in mice. RESULTS The results showed that the acetone crude extract had the most important in vitro activity against all the fungi. But in vivo it was only the most active against Candida albicans, Candida glabrata, Candida tropicalis and Microsporum persicolor. Candida krusei was more sensitive to the aqueous crude extract. CONCLUSION These results indicated that tea could be considered to treat infections caused by the five tested species.
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Affiliation(s)
- S Akroum
- Department of Applied Microbiology and Food Sciences, Faculty of Natural and Life Sciences, University Mohammed Seddik Ben Yahia, Jijel, BP 98 Ouled Aissa, 18000 Jijel, Algeria.
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Zaidi KU, Shah F, Parmar R, Thawani V. Anticandidal synergistic activity of Ocimum sanctum and fluconazole of azole resistance strains of clinical isolates. J Mycol Med 2018; 28:289-293. [PMID: 29730129 DOI: 10.1016/j.mycmed.2018.04.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 04/13/2018] [Accepted: 04/16/2018] [Indexed: 11/26/2022]
Abstract
Candida albicans is the most prevalent fungal pathogen in humans. It is the causative agent and most associated with serious fungal infection, accounting for more than 90% of cases. It is a most common cause of deep mycoses and vulvovaginal candidiasis. In the present study we found that methanolic extract of O. sanctum in combination of fluconazole shows higher zone of inhibition and lesser MIC values as compared to methanolic extract of leaves of O. sanctum or fluconazole when used alone. Synergistic antimicrobial activity was found when methanolic extract of leaves of O. sanctum was used in combination with fluconazole against C. albicans azole resistance strains isolated from catheter tip (CT) and high vaginal swab (HVS) (FIC≤0.5). Partial synergistic activity was observed against urine (U). Methanolic extract of stem of O. sanctum in combination with fluconazole gave indifferent antifungal results (FIC=1.0-4.0). Benzene extract of the leaf and stem of O. sanctum in combination with fluconazole showed indifferent antifungal results (FIC=1.0-4.0). Aqueous extract of leaves of O. sanctum in combination with fluconazole showed partial synergistic antimicrobial activity against catheter tip (CT) and high vaginal swab (HVS) and urine (U) (FIC=0.5-1.0). In the present study we evaluate the synergism of C. albicans against azole resistant clinical isolates. This study indicates clear evidence supporting the traditional use of O. sanctum in treating Candida infectious diseases.
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Affiliation(s)
- K U Zaidi
- Biotechnology Pharmacology Laboratory, Centre for Scientific Research and Development, People's University, Bhopal 462037, India.
| | - F Shah
- Department of Microbiology, Saifia Science College, Bhopal, India
| | - R Parmar
- Biotechnology Pharmacology Laboratory, Centre for Scientific Research and Development, People's University, Bhopal 462037, India
| | - V Thawani
- Biotechnology Pharmacology Laboratory, Centre for Scientific Research and Development, People's University, Bhopal 462037, India
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Pedro Z, Benjamín R, Marcela M, Haroldo M, Patricio G, Ociel M. Biological and antioxidant activity of Gunnera tinctoria (Nalca). ACTA ACUST UNITED AC 2017. [DOI: 10.5897/jmpr2017.6376] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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