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Cheng H, Zhang D, Wu J, Liu J, Zhou Y, Tan Y, Feng W, Peng C. Interactions between gut microbiota and polyphenols: A mechanistic and metabolomic review. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 119:154979. [PMID: 37552899 DOI: 10.1016/j.phymed.2023.154979] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 06/30/2023] [Accepted: 07/15/2023] [Indexed: 08/10/2023]
Abstract
BACKGROUND Polyphenols are a class of naturally sourced compounds with widespread distribution and an extensive array of bioactivities. However, due to their complex constituents and weak absorption, a convincing explanation for their remarkable bioactivity remains elusive for a long time. In recent years, interaction with gut microbiota is hypothesized to be a reasonable explanation of the potential mechanisms for natural compounds especially polyphenols. OBJECTIVES This review aims to present a persuasive explanation for the contradiction between the limited bioavailability and the remarkable bioactivities of polyphenols by examining their interactions with gut microbiota. METHODS We assessed literatures published before April 10, 2023, from several databases, including Scopus, PubMed, Google Scholar, and Web of Science. The keywords used include "polyphenols", "gut microbiota", "short-chain fatty acids", "bile acids", "trimethylamine N-oxide", "lipopolysaccharides" "tryptophan", "dopamine", "intestinal barrier", "central nervous system", "lung", "anthocyanin", "proanthocyanidin", "baicalein", "caffeic acid", "curcumin", "epigallocatechin-3-gallate", "ferulic acid", "genistein", "kaempferol", "luteolin", "myricetin", "naringenin", "procyanidins", "protocatechuic acid", "pterostilbene", "quercetin", "resveratrol", etc. RESULTS: The review first demonstrates that polyphenols significantly alter gut microbiota diversity (α- and β-diversity) and the abundance of specific microorganisms. Polyphenols either promote or inhibit microorganisms, with various factors influencing their effects, such as dosage, treatment duration, and chemical structure of polyphenols. Furthermore, the review reveals that polyphenols regulate several gut microbiota metabolites, including short-chain fatty acids, dopamine, trimethylamine N-oxide, bile acids, and lipopolysaccharides. Polyphenols affect these metabolites by altering gut microbiota composition, modifying microbial enzyme activity, and other potential mechanisms. The changed microbial metabolites induced by polyphenols subsequently trigger host responses in various ways, such as acting as intestinal acid-base homeostasis regulators and activating on specific target receptors. Additionally, polyphenols are transformed into microbial derivatives by gut microbiota and these polyphenols' microbial derivatives have many potential advantages (e.g., increased bioactivity, improved absorption). Lastly, the review shows polyphenols maintain intestinal barrier, central nervous system, and lung function homeostasis by regulating gut microbiota. CONCLUSION The interaction between polyphenols and gut microbiota provides a credible explanation for the exceptional bioactivities of polyphenols. This review aids our understanding of the underlying mechanisms behind the bioactivity of polyphenols.
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Affiliation(s)
- Hao Cheng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Dandan Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Jing Wu
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Juan Liu
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, PR China
| | - Yaochuan Zhou
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Yuzhu Tan
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Wuwen Feng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China; The Ministry of Education Key Laboratory of Standardization of Chinese Herbal Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China; The Ministry of Education Key Laboratory of Standardization of Chinese Herbal Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, PR China.
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Raheem KY, Ibukunoluwa FP, Olorundare SA, Nandwa JO, Abayomi MA, Uchechukwu EJ, Adewunmi M, Blessing KZ, Anthony MM, Gbadebo MI, Daniel FT. Therapeutic capability of selected medicinal plants' bioactive constituents against the mutant ovarian TP53 gene; a computational approach. ADVANCES IN BIOMARKER SCIENCES AND TECHNOLOGY 2023. [DOI: 10.1016/j.abst.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023] Open
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3
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Chemical Constituents from Streblus taxoides Wood with Their Antibacterial and Antityrosinase Activities Plus in Silico Study. Antibiotics (Basel) 2023; 12:antibiotics12020319. [PMID: 36830230 PMCID: PMC9952338 DOI: 10.3390/antibiotics12020319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/28/2023] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Hyperpigmentation frequently occurs after inflammation from bacterial infection. Thus, the inhibition activity of tyrosinase, the key enzyme to catalyze the melanogenesis and/or inhibition of bacterial infection, could decrease melanin production. Hence, the potential inhibitors could be discovered from natural products. ω-Hydroxymoracin C (1), a new compound with two other 2-arylbenzofurans, i.e., moracin M (2) and moracin C (3), and two stilbenes, i.e., 3, 4, 3', 5'-tetrahydroxybibenzyl (4) and piceatannol (5), were isolated from the wood of Streblus taxoides. Compound 4 showed a strong inhibitory activity against tyrosinase enzyme with an IC50 value of 35.65 µg/mL, followed by compound 2 with an IC50 value of 47.34 µg/mL. Conversely, compound 1, 3 and 5 showed moderate activity, with IC50 values of 109.64, 128.67 and 149.73 µg/mL, respectively. Moreover, compound 1 and 3 showed an antibacterial effect against some Staphylococcus spp. Thus, the isolated compounds exhibited potential antityrosine and antibacterial effects. Additionally, an in silico study was performed in order to predict theoretical molecular interactions between the obtained metabolites from S. taxoides and tyrosinase as an extended in vitro enzyme binding assay experiment.
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Susanti D, Haris MS, Taher M, Khotib J. Natural Products-Based Metallic Nanoparticles as Antimicrobial Agents. Front Pharmacol 2022; 13:895616. [PMID: 35721199 PMCID: PMC9205242 DOI: 10.3389/fphar.2022.895616] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 05/04/2022] [Indexed: 11/24/2022] Open
Abstract
Natural products offer a wide range of bioactivity including antimicrobial properties. There are many reports showing the antimicrobial activities of phytochem icals from plants. However, the bioactivity is limited due to multidrug resistant properties of the microorganism and different composition of cell membrane. The antibacterial activity of the natural products is different toward Gram-negative and Gram-positive bacteria. These phenomena are caused by improper physicochemical conditions of the substance which hinder the phytochemical bioactivity against the broad range of bacteria. One of the strategies to improve the antimicrobial action is by biogenic synthesis via redox balance of the antimicrobial active substance with metal to form nanosized materials or nanoparticles (NPs). Antibiotic resistance is not relevant to NPs because the action of NPs is via direct contact with bacterial cell walls without the need of penetration into microbial cells. The NPs that have shown their effectiveness in preventing or overcoming biofilm formation such as silver-based nanoparticles (AgNPs), gold-based nanoparticles (AuNPs), platinum-based nanoparticles (PtNPs) and Zinc oxide-based nanoparticles (ZnONPs). Due to its considerably simple synthesis procedure has encouraged researchers to explore antimicrobial potency of metallic nanoparticles. Those metallic nanoparticles remarkably express synergistic effects against the microorganisms tested by affecting bacterial redox balance, thus disrupting their homeostasis. In this paper, we discuss the type of metallic nanoparticle which have been used to improve the antimicrobial activity of plant extract/constituents, preparation or synthesis process and characterisation of the plant-based metallic nanoparticles.
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Affiliation(s)
- Deny Susanti
- Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia, Kuantan, Malaysia
| | - Muhammad Salahuddin Haris
- Department of Pharmaceutical Technology, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia.,IKOP Pharma Sdn Bhd, Jalan Sultan Ahmad Shah, Kuantan, Malaysia.,Pharmaceutics and Translational Research Group, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia
| | - Muhammad Taher
- Department of Pharmaceutical Technology, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia.,Pharmaceutics and Translational Research Group, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia
| | - Junaidi Khotib
- Department of Pharmacy Practice, Faculty of Pharmacy, Airlangga University, Surabaya, Indonesia
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Bo S, Chang SK, Zhu H, Jiang Y, Yang B. Naturally occurring prenylated stilbenoids: food sources, biosynthesis, applications and health benefits. Crit Rev Food Sci Nutr 2022; 63:8083-8106. [PMID: 35373665 DOI: 10.1080/10408398.2022.2056131] [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] [Indexed: 01/05/2023]
Abstract
Prenylated stilbenoids are a unique class of natural phenolic compounds consisting of C6-C2-C6 skeleton with prenyl substitution. They are potential nutraceuticals and dietary supplements presented in some edible plants. Prenylated stilbenoids demonstrate promising health benefits, including antioxidant, anti-cancer, anti-inflammatory, anti-microbial activities. This review reports the structure, bioactivity and potential application of prenylated stilbeniods in food industry. Edible sources of these compounds are compiled and summarized. Structure-activity relationship of prenylated stilbenoids are also highlighted. The biosynthesis strategies of prenylated stilbenoids are reviewed. The findings of these compounds as food preservative, nutraceuticals and food additive are discussed. This paper combines the up-to-date information and gives a full image of prenylated stilbenoids.
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Affiliation(s)
- Shengtao Bo
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Core Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Sui Kiat Chang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Core Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, China
| | - Hong Zhu
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Core Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yueming Jiang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Core Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Bao Yang
- Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, Core Botanical Garden, South China Botanical Garden, Chinese Academy of Sciences, Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
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6
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Hua OH, Tran QTT, Trinh DTT, Nguyen VD, Duong DPN, Nguyen TT. A Review of Traditional Uses, Phytochemistry and Pharmacological Properties of Some Vietnamese Wound-Healing Medicinal Plants. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221088379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Wound healing is a sophisticated process that results in the repair of damaged tissues. Any impairment to this process can lead to non-healing (chronic) wounds. Since these can cause a massive burden on the healthcare system, alternative therapies that promote wound healing should be considered. Therapies of natural origins that are safe and with no adverse side effects are especially promising. Vietnam, a tropical-climate country, has many medicinal plants that possess the potential for healing wounds. This report explores the use of some common plants used in Traditional Vietnamese medicine and their molecular mechanisms.
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Affiliation(s)
- Oanh Hoang Hua
- Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Quynh Thi Thuy Tran
- Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Dieu-Thuong Thi Trinh
- Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Van-Dan Nguyen
- Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Duc Phan Nguyen Duong
- Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Triet Thanh Nguyen
- Faculty of Traditional Medicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
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7
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Lim JW, Jo YH, Choi JS, Lee MK, Lee KY, Kang SY. Antibacterial Activities of Prenylated Isoflavones from Maclura tricuspidata against Fish Pathogenic Streptococcus: Their Structure-Activity Relationships and Extraction Optimization. Molecules 2021; 26:molecules26247451. [PMID: 34946533 PMCID: PMC8704674 DOI: 10.3390/molecules26247451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 12/01/2021] [Accepted: 12/07/2021] [Indexed: 11/30/2022] Open
Abstract
Streptococcus zoonotic bacteria cause serious problems in aquaculture with clinical effects on humans. A structure-antibacterial activity relationships analysis of 22 isoflavones isolated from M. tricuspidata (leaves, ripe fruits, and unripe fruits) against S. iniae revealed that prenylation of the isoflavone skeleton was an important key for their antibacterial activities (minimum inhibitory concentrations: 1.95–500 μg/mL). Through principal component analysis, characteristic prenylated isoflavones such as 6,8-diprenlygenistein (4) were identified as pivotal compounds that largely determine each part’s antibacterial activities. M. tiricuspidata ripe fruits (MTF), which showed the highest antibacterial activity among the parts tested, were optimized for high antibacterial activity and low cytotoxicity on fathead minnow cells using Box–Behnken design. Optimized extraction conditions were deduced to be 50%/80 °C/7.5 h for ethanol concentration/extraction temperature/time, and OE-MTF showed contents of 6,8-diprenlygenistein (4), 2.09% with a MIC of 40 µg/mL. These results suggest that OE-MTF and its active isoflavones have promising potential as eco-friendly antibacterial agents against streptococcosis in aquaculture.
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Affiliation(s)
- Jae-Woong Lim
- Department of Aqualife Medicine, Chonnam National University, Yeosu 59626, Korea; (J.-W.L.); (J.-S.C.)
| | - Yang Hee Jo
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea; (Y.H.J.); (M.K.L.)
| | - Ji-Seok Choi
- Department of Aqualife Medicine, Chonnam National University, Yeosu 59626, Korea; (J.-W.L.); (J.-S.C.)
| | - Mi Kyeong Lee
- College of Pharmacy, Chungbuk National University, Cheongju 28160, Korea; (Y.H.J.); (M.K.L.)
| | - Ki Yong Lee
- College of Pharmacy, Korea University, Sejong 30019, Korea;
| | - So Young Kang
- Department of Aqualife Medicine, Chonnam National University, Yeosu 59626, Korea; (J.-W.L.); (J.-S.C.)
- Correspondence: ; Tel./Fax: +82-61-659-7176
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8
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Chang BY, Koo BS, Kim SY. Pharmacological Activities for Morus alba L., Focusing on the Immunostimulatory Property from the Fruit Aqueous Extract. Foods 2021; 10:foods10081966. [PMID: 34441742 PMCID: PMC8393821 DOI: 10.3390/foods10081966] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/11/2021] [Accepted: 08/20/2021] [Indexed: 12/21/2022] Open
Abstract
Depending on the extraction method, numerous compounds that have specific pharmacological effects can be obtained from M. alba L. There is a growing scientific interest in health problems related to aging. Efforts to develop safe immune-enhancing pharmaceuticals are increasing. This review aims to summarize and critically discuss the immunity enhancement effects and pharmaceutical efficacy of M. alba L. extracts. The scientific database search was conducted using Google Scholar, Web of Science, and PubMed until May 2021. Additional articles were identified and obtained from references in the retrieved articles. Ethanol or methanol extraction of various parts of M. alba L. identified a large amount of phenols and flavonoids, which are effective for immunosuppression, antioxidants, and cardiovascular diseases, and are antibacterial, and anticancer. Water extraction of M. alba L. enhanced the innate immune response based on immune cell activation. A polysaccharide and an alkaloid related to increased macrophage activity were isolated from M. alba L. fruit extracts. M. alba L. fruit water extracts primarily induced the production of pro-inflammatory substances, in model organisms, via TLR4 in immune cells. Water extracts have been shown to be effective in pathogen defense and tumor suppression by enhancing macrophage activity. Based on our literature review on the bioactivity of M. alba L. fruit extracts, particularly in relation to their immunity enhancement activity, we anticipate that M. alba-derived pharmaceuticals will have excellent potential in future medical research.
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Affiliation(s)
- Bo-Yoon Chang
- Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University, Jeonbuk, Iksan 54538, Korea;
| | - Bong-Seong Koo
- ForBioKorea Co., Ltd., Geumcheon-gu, Seoul 08592, Korea;
| | - Sung-Yeon Kim
- Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University, Jeonbuk, Iksan 54538, Korea;
- Correspondence: ; Tel.: +82-63-850-6806
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Janakirama Rao AS, Mudduraj Urs VT, Devanna JN, Mahadevappa P, Kumaran RC. Bioactive Isolates of Morus Species as Antibacterial Agents and their In Silico Profiling. LETT DRUG DES DISCOV 2021. [DOI: 10.2174/1570180817999201104120815] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The genus Morus is one of the rich sources of phytomedicine and considered
a beneficial natural source for drugs with potential antimicrobial effect under the traditional
system of medicine.
Introduction:
In the present study, three bioactive compounds isolated from the leaves of two species
of genus Morus and their antibacterial effect against selective pathogens were assessed.
Methods:
The inhibitory effects of the three molecules isolated were assessed for their minimum
inhibition concentration (MIC) and minimum bactericidal concentration (MBC) against selected
pathogens. The in-silico studies provided the toxicity profile and the binding interactions with glucosamine-
6-phosphate synthase for all the isolates.
Results:
Among the three compounds tested, cathafuran-B showed a prominent bacteriostatic and
bactericidal effect, which is supported by the results of in-silico analysis suggesting that cathafuran-
B could be a potential glucosamine-6-phosphate synthase inhibitor.
Conclusion:
The biomolecule isolated from less explored Morus laevigata exhibiting higher antibacterial
effect among the compounds tested warranted opening a new prospect in phytomedicinal
research for exploring its pharmacological properties and lowering the utilization load present on
highly explored Morus alba.
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Affiliation(s)
| | | | | | | | - Ramesh Chapeyil Kumaran
- Department of Biotechnology, Kuvempu University, Sahyadri Science College Campus, Shivamogga, Karnataka, India
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Tamafo Fouegue AD, Tedongmo H, Abdoul Ntieche R, Ghogomu JN. DFT insights into the structure, reactivity and radical scavenging activity of cycloartocarpesin. J PHYS ORG CHEM 2021. [DOI: 10.1002/poc.4245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Aymard Didier Tamafo Fouegue
- Department of Chemistry, Higher Teacher Training College Bertoua The University of Ngaoundéré Bertoua Cameroon
- Research Unit of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science The University of Dschang Dschang Cameroon
| | - Hilaire Tedongmo
- Research Unit of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science The University of Dschang Dschang Cameroon
| | - Rahman Abdoul Ntieche
- Department of Chemistry, Higher Teacher Training College Bertoua The University of Ngaoundéré Bertoua Cameroon
| | - Julius Numbonui Ghogomu
- Research Unit of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science The University of Dschang Dschang Cameroon
- Department of Chemistry, Faculty of Science The University of Bamenda Bamenda Cameroon
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11
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Parise A, De Simone BC, Marino T, Toscano M, Russo N. Quantum Mechanical Predictions of the Antioxidant Capability of Moracin C Isomers. Front Chem 2021; 9:666647. [PMID: 33968905 PMCID: PMC8097241 DOI: 10.3389/fchem.2021.666647] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 03/25/2021] [Indexed: 11/13/2022] Open
Abstract
The antioxidant capability of moracin C and iso-moracin C isomers against the OOH free radical was studied by applying density functional theory (DFT) and choosing the M05-2X exchange-correlation functional coupled with the all electron basis set, 6-311++G(d,p), for computations. Different reaction mechanisms [hydrogen atom transfer (HAT), single electron transfer (SET), and radical adduct formation (RAF)] were taken into account when considering water- and lipid-like environments. Rate constants were obtained by applying the conventional transition state theory (TST). The results show that, in water, scavenging activity mainly occurs through a radical addition mechanism for both isomers, while, in the lipid-like environment, the radical addition process is favored for iso-moracin C, while, redox- and non-redox-type reactions can equally occur for moracin C. The values of pKa relative to the deprotonation paths at physiological pH were predicted in aqueous solution.
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Affiliation(s)
- Angela Parise
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Rende, Italy.,Université Paris-Saclay, CNRS, Institut de Chimie Physique UMR8000, Orsay, France
| | - Bruna Clara De Simone
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Rende, Italy
| | - Tiziana Marino
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Rende, Italy
| | - Marirosa Toscano
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Rende, Italy
| | - Nino Russo
- Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, Rende, Italy
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12
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Vo QV, Hoa NT. The radical scavenging activity of moracins: theoretical insights. RSC Adv 2020; 10:36843-36848. [PMID: 35517966 PMCID: PMC9057055 DOI: 10.1039/d0ra06555b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 09/30/2020] [Indexed: 11/21/2022] Open
Abstract
Moracins are natural products that have been isolated from different plants such as Artocarpus heterophyllus, Cassia fistula, Morus alba, and Morus mesozygia. Studies showed that moracins may have various advantageous physiological effects such as anticancer, anti-inflammatory, anticholinesterase and particularly antioxidant activities. Most of these bioactivities have not been studied systematically. In this study, the radical scavenging of a typical moracin (moracin M, MM) against HO˙ and HOO˙ radicals was evaluated by thermodynamic and kinetic calculations in the gas phase as well as in water and pentyl ethanoate solvents. It was found that the overall rate constants for the HO˙ radical scavenging in the gas phase and the physiological environments are in the range of 1011 to 1010 M-1 s-1, respectively. For the HOO˙ + MM reaction the rate constants are 4.10 × 107 and 3.80 × 104 M-1 s-1 in the polar and lipid media, respectively. It is important to notice that the single electron transfer pathway of the anion state (MM-O6'-) dominated the HOO˙ radical scavenging in the aqueous solution, whereas in lipid medium the neutral MM exerted its activity by the formal hydrogen transfer mechanism. The HOO˙ radical scavenging of MM is comparable to that of Trolox in lipid medium, whereas it is 315.4 times more active in the polar environment.
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Affiliation(s)
- Quan V Vo
- Institute of Research and Development, Duy Tan University Danang 550000 Vietnam
- The University of Danang - University of Technology and Education 48 Cao Thang Danang 550000 Vietnam
| | - Nguyen Thi Hoa
- The University of Danang - University of Technology and Education 48 Cao Thang Danang 550000 Vietnam
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Raimi IO, Kopaopa BG, Mugivhisa LL, Lewu FB, Amoo SO, Olowoyo JO. An appraisal of documented medicinal plants used for the treatment of cancer in Africa over a twenty-year period (1998–2018). J Herb Med 2020. [DOI: 10.1016/j.hermed.2020.100371] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Affiliation(s)
- Houssem Boulebd
- Laboratory of Synthesis of Molecules with Biological Interest, University of Frères Mentouri Constantine 1, Constantine, Algeria
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Smailagić A, Ristivojević P, Dimkić I, Pavlović T, Dabić Zagorac D, Veljović S, Fotirić Akšić M, Meland M, Natić M. Radical Scavenging and Antimicrobial Properties of Polyphenol Rich Waste Wood Extracts. Foods 2020; 9:foods9030319. [PMID: 32164204 PMCID: PMC7143368 DOI: 10.3390/foods9030319] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 02/25/2020] [Accepted: 03/02/2020] [Indexed: 01/20/2023] Open
Abstract
The main focus of this study is to assess radical scavenging and antimicrobial activities of the 11 wood extracts: oak (Quercus petraea (Matt.) Liebl., Q. robur L., and Q. cerris L.), mulberry (Morusalba L.), myrobalan plum (Prunuscerasifera Ehrh.), black locust (Robinia pseudoacacia L.), and wild cherry (Prunus avium L.). High-performance thin-layer chromatography (HPTLC) provided initial phenolic screening and revealed different chemical patterns among investigated wood extracts. To identify individual compounds with radical scavenging activity DPPH-HPTLC, assay was applied. Gallic acid, ferulic and/or caffeic acids were identified as the compounds with the highest contribution of total radical scavenging activity. Principal component analysis was applied on the data set obtained from HPTLC chromatogram to classify samples based on chemical fingerprints: Quercus spp. formed separate clusters from the other wood samples. The wood extracts were evaluated for their antimicrobial activity against eight representative human and opportunistic pathogens. The lowest minimum inhibitory concentration (MIC) was recorded against Staphylococcus aureus for black locust, cherry and mulberry wood extracts. This work provided simple, low-cost and high-throughput screening of phenolic compounds and assessments of the radical scavenging properties of selected individual metabolites from natural matrix that contributed to scavenge free radicals.
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Affiliation(s)
- Anita Smailagić
- Innovation Center of the Faculty of Chemistry, University of Belgrade, P.O. Box 51, 11158 Belgrade, Serbia; (A.S.); (D.D.Z.)
| | - Petar Ristivojević
- Faculty of Chemistry, University of Belgrade, P.O. Box 51, 11158 Belgrade, Serbia;
| | - Ivica Dimkić
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia; (I.D.); (T.P.)
| | - Tamara Pavlović
- Faculty of Biology, University of Belgrade, Studentski trg 16, 11000 Belgrade, Serbia; (I.D.); (T.P.)
| | - Dragana Dabić Zagorac
- Innovation Center of the Faculty of Chemistry, University of Belgrade, P.O. Box 51, 11158 Belgrade, Serbia; (A.S.); (D.D.Z.)
| | - Sonja Veljović
- Institute of General and Physical Chemistry, University of Belgrade P.O. Box 551, 11001 Belgrade, Serbia;
| | | | - Mekjell Meland
- Norwegian Institute of Bioeconomy Research-NIBIO Ullensvang, NO-5781 Lofthus, Norway;
| | - Maja Natić
- Faculty of Chemistry, University of Belgrade, P.O. Box 51, 11158 Belgrade, Serbia;
- Correspondence:
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Rao BVD, Vardhini SV, Kolli D, Rao MVB, Pal M. Ultrasound Assisted Synthesis of 2-Substituted Benzofurans via One-Pot and Sequential Method: Their In Vitro Evaluation. Anticancer Agents Med Chem 2020; 20:580-588. [PMID: 31994471 DOI: 10.2174/1871520620666200128120356] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 09/13/2019] [Accepted: 12/14/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND The 2-substituted benzofuran framework has attracted enormous attention due to its presence in a range of bioactive compounds and natural products. While various methods for the synthesis of 2- substituted benzofuran derivatives are known, several of them suffer from certain drawbacks. OBJECTIVE The main objective of this work was to explore a series of 2-(het)aryl substituted benzofurans derivatives for their cytotoxic properties against cancer cell lines in vitro. METHODS In our efforts, we have developed a one-pot synthesis of this class of compounds via sequential C-C coupling followed by C-Si bond cleavage and subsequent tandem C-C/C-O bond-forming reaction under ultrasound irradiation. The methodology involved coupling of (trimethylsilyl)acetylene with iodoarenes in the presence of 10% Pd/C-CuI-PPh3-Et3N in MeOH followed by treating the reaction mixture with K2CO3 in aqueous MeOH and finally coupling with 2-iodophenol. A variety of 2-substituted benzofurans were synthesized using this methodology in good yield. All the synthesized compounds were tested in vitro against two cancer cell lines, e.g. MDAMB-231 and MCF-7 cell lines subsequently against SIRT1. RESULTS The benzofuran derivative 3m showed encouraging growth inhibition of both MDAMB-231 and MCF- 7 cell lines and significant inhibition of SIRT1. The compound 3m also showed a concentration-dependent increase in the acetylation of p53. CONCLUSION Our efforts not only accomplished a one-pot and direct access to 2-(het)aryl substituted benzofurans but also revealed that the benzofuran framework presented here could be a potential template for the identification of potent inhibitors of SIRT1.
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Affiliation(s)
- Bodapati V D Rao
- Department of Chemistry, Krishna University, Machilipatnam-521 001, Andhra Pradesh, India
| | - Suryadevara V Vardhini
- Department of Chemistry, Amritasai Institute of Science and Technology, Paritala, Krishna Dist., 521 180, Andhra Pradesh, India
| | - Deepti Kolli
- Department of Chemistry, Koneru Lakshmaiah Education Foundation, Green fields, Vaddeswaram-522502, Andhra Pradesh, India
| | - Mandava V B Rao
- Department of Chemistry, Krishna University, Machilipatnam-521 001, Andhra Pradesh, India
| | - Manojit Pal
- Dr. Reddy's Institute of Life Sciences, University of Hyderabad Campus, Hyderabad-500046, India
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Mulberry Bark Alleviates Effect of STZ Inducing Diabetic Mice through Negatively Regulating FoxO1. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 2019:2182865. [PMID: 30800168 PMCID: PMC6360591 DOI: 10.1155/2019/2182865] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/22/2018] [Accepted: 12/04/2018] [Indexed: 11/17/2022]
Abstract
Dysfunction of insulin secretion and hyperglycaemia were commonly found due to damaged β cells of pancreas. In our previous research, it was found that mulberry branch bark powder (MBBP) was effective in treating diabetes in mice which were induced by STZ and high fat diet. The present study was designed to evaluate the protective effect of MBBP on STZ-induced β cells injury and investigate underlying mechanisms. By preventive administration of branch bark powder, the damage caused by STZ injection was found to be alleviated. In MBBP feed groups, pathological weight loss was inhibited, fasting blood glucose was controlled, the incidence of diabetes decreased, and blood lipid level and antioxidant capacities were restored. The PI3K/AKT/FoxO1 signal pathway was found to be activated by key proteins expression and gene testing. In liver, the increased PI3K and phosphorylated AKT, the phosphorylated, and inactivated FoxO1, which regulates the expression of gluconeogenic gene and explains the effect of relieving insulin resistance of MBBP. Therefore, the MBBP improves the tolerance of pancreas to the toxicity of STZ involving the PI3K/AKT/FoxO1 signalling pathway.
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Farhadi F, Khameneh B, Iranshahi M, Iranshahy M. Antibacterial activity of flavonoids and their structure-activity relationship: An update review. Phytother Res 2018; 33:13-40. [PMID: 30346068 DOI: 10.1002/ptr.6208] [Citation(s) in RCA: 263] [Impact Index Per Article: 43.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 08/05/2018] [Accepted: 09/12/2018] [Indexed: 12/13/2022]
Abstract
Based on World Health Organization reports, resistance of bacteria to well-known antibiotics is a major global health challenge now and in the future. Different strategies have been proposed to tackle this problem including inhibition of multidrug resistance pumps and biofilm formation in bacteria and development of new antibiotics with novel mechanism of action. Flavonoids are a large class of natural compounds, have been extensively studied for their antibacterial activity, and more than 150 articles have been published on this topic since 2005. Over the past decade, some promising results were obtained with the antibacterial activity of flavonoids. In some cases, flavonoids (especially chalcones) showed up to sixfold stronger antibacterial activities than standard drugs in the market. Some synthetic derivatives of flavonoids also exhibited remarkable antibacterial activities with 20- to 80-fold more potent activity than the standard drug against multidrug-resistant Gram-negative and Gram-positive bacteria (including Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus). This review summarizes the ever changing information on antibacterial activity of flavonoids since 2005, with a special focus on the structure-activity relationship and mechanisms of actions of this broad class of natural compounds.
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Affiliation(s)
- Faegheh Farhadi
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bahman Khameneh
- Department of Pharmaceutical Control, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehrdad Iranshahi
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Milad Iranshahy
- Department of Pharmacognosy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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Seong SH, Ha MT, Min BS, Jung HA, Choi JS. Moracin derivatives from Morus Radix as dual BACE1 and cholinesterase inhibitors with antioxidant and anti-glycation capacities. Life Sci 2018; 210:20-28. [DOI: 10.1016/j.lfs.2018.08.060] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 12/20/2022]
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Hussain F, Rana Z, Shafique H, Malik A, Hussain Z. Phytopharmacological potential of different species of Morus alba and their bioactive phytochemicals: A review. Asian Pac J Trop Biomed 2017. [DOI: 10.1016/j.apjtb.2017.09.015] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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21
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Mbaveng AT, Kuete V, Efferth T. Potential of Central, Eastern and Western Africa Medicinal Plants for Cancer Therapy: Spotlight on Resistant Cells and Molecular Targets. Front Pharmacol 2017; 8:343. [PMID: 28626426 PMCID: PMC5454075 DOI: 10.3389/fphar.2017.00343] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Accepted: 05/19/2017] [Indexed: 12/26/2022] Open
Abstract
Cancer remains a major health hurdle worldwide and has moved from the third leading cause of death in the year 1990 to second place after cardiovascular disease since 2013. Chemotherapy is one of the most widely used treatment modes; however, its efficiency is limited due to the resistance of cancer cells to cytotoxic agents. The present overview deals with the potential of the flora of Central, Eastern and Western African (CEWA) regions as resource for anticancer drug discovery. It also reviews the molecular targets of phytochemicals of these plants such as ABC transporters, namely P-glycoprotein (P-gp), multi drug-resistance-related proteins (MRPs), breast cancer resistance protein (BCRP, ABCG2) as well as the epidermal growth factor receptor (EGFR/ErbB-1/HER1), human tumor suppressor protein p53, caspases, mitochondria, angiogenesis, and components of MAP kinase signaling pathways. Plants with the ability to preferentially kills resistant cancer cells were also reported. Data compiled in the present document were retrieved from scientific websites such as PubMed, Scopus, Sciencedirect, Web-of-Science, and Scholar Google. In summary, plant extracts from CEWA and isolated compounds thereof exert cytotoxic effects by several modes of action including caspases activation, alteration of mitochondrial membrane potential (MMP), induction of reactive oxygen species (ROS) in cancer cells and inhibition of angiogenesis. Ten strongest cytotoxic plants from CEWA recorded following in vitro screening assays are: Beilschmiedia acuta Kosterm, Echinops giganteus var. lelyi (C. D. Adams) A. Rich., Erythrina sigmoidea Hua (Fabaceae), Imperata cylindrical Beauv. var. koenigii Durand et Schinz, Nauclea pobeguinii (Pobég. ex Pellegr.) Merr. ex E.M.A., Piper capense L.f., Polyscias fulva (Hiern) Harms., Uapaca togoensis Pax., Vepris soyauxii Engl. and Xylopia aethiopica (Dunal) A. Rich. Prominent antiproliferative compounds include: isoquinoline alkaloid isotetrandrine (51), two benzophenones: guttiferone E (26) and isoxanthochymol (30), the isoflavonoid 6α-hydroxyphaseollidin (9), the naphthyl butenone guieranone A (25), two naphthoquinones: 2-acetylfuro-1,4-naphthoquinone (4) and plumbagin (37) and xanthone V1 (46). However, only few research activities in the African continent focus on cytotoxic drug discovery from botanicals. The present review is expected to stimulate further scientific efforts to better valorize the African flora.
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Affiliation(s)
- Armelle T. Mbaveng
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of MainzMainz, Germany
- Department of Biochemistry, Faculty of Science, University of DschangDschang, Cameroon
| | - Victor Kuete
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of MainzMainz, Germany
- Department of Biochemistry, Faculty of Science, University of DschangDschang, Cameroon
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of MainzMainz, Germany
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Antifungal Activity of the Ethanol Extract from Flos Rosae Chinensis with Activity against Fluconazole-Resistant Clinical Candida. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:4780746. [PMID: 28303159 PMCID: PMC5338309 DOI: 10.1155/2017/4780746] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 11/22/2016] [Accepted: 12/01/2016] [Indexed: 11/17/2022]
Abstract
This study was designed to investigate the antifungal activity of a hydroalcoholic extract from Flos Rosae Chinensis (FRC) combined with fluconazole (FCZ) against clinical isolates of Candida albicans resistant to FCZ. The minimum inhibitory concentration (MIC) of FRC was determined using a checkerboard microdilution assay. The synergistic effects of the combination of FRC and FCZ against clinical isolates of C. albicans resistant to FCZ were further confirmed by constructing time-growth curves and performing an agar diffusion test. FRC alone exerted efficient antifungal activities against C. albicans within a MIC80 ranging from 20 μg/ml to 40 μg/ml. FRC failed to enhance the effects of FCZ against sensitive C. albicans strains, although it rendered FCZ-resistant C. albicans more sensitive. These results were further confirmed by the result of in vivo study. Our study is the first to discover that FRC can inhibit the growth of C. albicans to a certain degree. An FRC antifungal mechanism study showed that FRC strengthens FCZ to inhibit the action of ergosterol biosynthesis by promoting the transformation of lanosterol to eburicol, suggesting that the antifungal mechanism of FRC involves the inhibition of ergosterol biosynthesis.
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Singh KS, Roy M, Roy S, Ghosh B, Devi NM, Singh CB, Mun LK. Synthesis, characterization and antimicrobial activities of triorganotin(IV) complexes with azo-azomethine carboxylate ligands: crystal structure of a tributyltin(IV) and a trimethyltin(IV) complex. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1258464] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Keisham Surjit Singh
- Department of Chemistry, National Institute of Technology Agartala, Jirania, India
| | - Manojit Roy
- Department of Chemistry, National Institute of Technology Agartala, Jirania, India
| | - Subhadip Roy
- Department of Chemistry, National Institute of Technology Agartala, Jirania, India
| | - Bikash Ghosh
- Department of Chemistry, National Institute of Technology Agartala, Jirania, India
| | - N. Manglembi Devi
- Department of Natural Product Chemistry, Institute of Bio-resources and Sustainable Development, Takyelpat, Imphal, India
| | - Ch. Brajakishor Singh
- Department of Natural Product Chemistry, Institute of Bio-resources and Sustainable Development, Takyelpat, Imphal, India
| | - Lo Kong Mun
- Faculty of Science, Department of Chemistry, University of Malaya, Kuala Lumpur, Malaysia
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Shafiei Z, Haji Abdul Rahim Z, Philip K, Thurairajah N. Antibacterial and anti-adherence effects of a plant extract mixture (PEM) and its individual constituent extracts ( Psidium sp., Mangifera sp., and Mentha sp.) on single- and dual-species biofilms. PeerJ 2016; 4:e2519. [PMID: 27761322 PMCID: PMC5068394 DOI: 10.7717/peerj.2519] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 09/02/2016] [Indexed: 11/23/2022] Open
Abstract
Background Plant extracts mixture (PEM) and its individual constituent plant extracts(Psidium sp., Mangifera sp., Mentha sp.) are known to have an anti-adhering effect towards oral bacteria in the single-species biofilm. To date, the adhering ability of the early and late plaque colonisers (Streptococcus sanguinis and Streptococcus mutans) to PEM-treated experimental pellicle have not been investigated in dual-species biofilms. Methods Fresh leaves of these plants were used in the preparation of the respective aqueous extract decoctions. The minimum inhibitory concentration (MIC) of the extracts towards S. sanguinis ATCC BAA-1455 and S. mutans ATCC 25175 was determined using a two-fold serial microdilution method. The sum of fractional inhibitory concentration (ΣFIC) index of PEM and its constituent plant extracts was calculated using the MIC values of the plants. The minimum bactericidal concentration (MBC) of the plant extracts was also determined. The anti-adherence effect of the plant extracts (individually and mixed) was carried out by developing simulated S. sanguinis and S. mutans respectively in single- and dual-species of biofilms in the Nordini’s Artificial Mouth (NAM) model system in which the experimental pellicle was pretreated with the plant extract before bacterial inoculation. The bacterial population in the respective biofilms was quantified using ten-fold serial dilutions method and expressed as colony forming unit per ml (CFU/ml). The bacterial population was also viewed using Scanning Electron Microscope (SEM). All experiments were done in triplicate. Results The PEM compared with its respective constituent plants showed the lowest MIC towards S. sanguinis (3.81 mg/ml) and S. mutans (1.91 mg/ml) and exhibited a synergistic effect. The Psidium sp. (15.24 mg/ml) and, PEM and Psidium sp. (30.48 mg/ml) showed the lowest MBC towards S. sanguinis and S. mutans respectively. The anti-adherence effect of the PEM and its respective constituent plants (except Psidium sp.) was different for the two bacteria in the single-species biofilm. In the dual-species biofilms, PEM demonstrated similar anti-adherence effect towards S. sanguinis and S. mutans. The proportions of the bacterial population viewed under SEM appeared to be in agreement with the quantified population. Discussion The combination of the active constituents of the individual plant extracts in PEM may contribute to its low MIC giving rise to the synergistic effect. The different anti-adherence effect towards S. sanguinis and S. mutans in both single- and dual-species biofilms could be due to the different proportion of the active constituents of the extracts and the interaction between different bacteria. The better adhering ability of S. sanguinis towards the PEM-treated pellicle when present together with S. mutans in the dual-species biofilms may suggest the potential of PEM in controlling the balance between the early and late colonisers in biofilms.
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Affiliation(s)
- Zaleha Shafiei
- Department of Oral Biology and Biomedical Sciences, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia; Department of Clinical Oral Biology, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Zubaidah Haji Abdul Rahim
- Department of Oral Biology and Biomedical Sciences, Faculty of Dentistry, University of Malaya , Kuala Lumpur , Malaysia
| | - Koshy Philip
- Institute of Biological Sciences, Faculty of Science, University of Malaya , Kuala Lumpur , Malaysia
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Synthesis, structural characterization and antimicrobial activities of diorganotin(IV) complexes with azo-imino carboxylic acid ligand: Crystal structure and topological study of a doubly phenoxide-bridged dimeric dimethyltin(IV) complex appended with free carboxylic acid groups. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.04.063] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Wei H, Zhu JJ, Liu XQ, Feng WH, Wang ZM, Yan LH. Review of bioactive compounds from root barks of Morus plants (Sang-Bai-Pi) and their pharmacological effects. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/23312009.2016.1212320] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Hua Wei
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, 100700 Beijing, China
- Key Laboratory of Plant Resources Conservation and Utilization, Jishou University, College of Hunan Province, 416000 Jishou, China
| | - Jing-Jing Zhu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, 100700 Beijing, China
| | - Xiao-Qian Liu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, 100700 Beijing, China
| | - Wei-Hong Feng
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, 100700 Beijing, China
| | - Zhi-Min Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, 100700 Beijing, China
| | - Li-Hua Yan
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, 100700 Beijing, China
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Kuete V, Djeussi DE, Mbaveng AT, Zeino M, Efferth T. Cytotoxicity of 15 Cameroonian medicinal plants against drug sensitive and multi-drug resistant cancer cells. JOURNAL OF ETHNOPHARMACOLOGY 2016; 186:196-204. [PMID: 27063984 DOI: 10.1016/j.jep.2016.04.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 04/02/2016] [Accepted: 04/03/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cameroonian medicinal plants are traditionally used to treat many ailments, including cancer and related diseases. Cancer is characterized as a condition with complex signs and symptoms. It has been recommended that ethnopharmacological usages such as immune and skin disorders, inflammatory, infectious, parasitic and viral diseases should be taken into account when selecting plants for anticancer screenings, since these reflect disease states bearing relevance to cancer or cancer-like symptoms. AIM OF THE STUDY The present study aims at investigating 20 methanol extracts from 15 Cameroonian medicinal plants on a panel of human cancer cell lines, including various drug-resistant phenotypes. Possible modes of action of the of the most active plant were analyzed. MATERIALS AND METHODS Methanol extracts from different plant parts (leaves, bark, roots, fruits or whole plant) were evaluated for their cytotoxicity using resazurin reduction assay on a panel of nine sensitive and multi-drug resistant (MDR) cancer cell lines. Cell cycle, apoptosis, mitochondrial membrane potential (MMP), and reactive oxygen species (ROS) were measured by flow cytometry. RESULTS Prescreening of extracts at 80µg/mL showed that 6 extracts out of 20 inhibited more than 50% proliferation of leukemia CCRF-CEM cells; these include extracts from Anthocleista schweinfurthii fruits (ASF; 48.28%), Morus mesozygia bark (MMB; 42.76%), Nauclea latifolia bark (NLB; 38.75%), Tridesmostemon omphalocarpoides bark (TOB; 38.53%), Nauclea latifolia leaves (NLL; 35.17%) and Erythrina sigmoidea bark (ESB; 33.77%). Subsequent investigations revealed IC50 values below or around 20µg/mL for extracts from MMB, NLB, NLL and ESB towards sensitive CCRF-CEM cells and its resistant P-glycoprotein over-expressing subline CEM/ADR5000. The best extract, ESB also displayed IC50 values below 20µg/mL colon carcinoma HCT116 (p53(+/+)) cells with an IC50 value of 19.63µg/mL and it resistant p53 knockout subline HCT116 (p53(-)(/-)) with an IC50 value of 16.22µg/mL. CONCLUSION Erythrina sigmoidea, Anthocleista schweinfurthii, Morus mesozygia, Nauclea latifolia, Tridesmostemon omphalocarpoides used in African traditional medicine are good cytotoxic plants that can be exploited to develop phytomedicine to fight cancers including MDR phenotypes.
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Affiliation(s)
- Victor Kuete
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of Mainz, Staudinger Weg 5, 55128 Mainz, Germany; Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon.
| | - Doriane E Djeussi
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Armelle T Mbaveng
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Maen Zeino
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of Mainz, Staudinger Weg 5, 55128 Mainz, Germany.
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Liu HY, Wang J, Ma J, Zhang YQ. Interference effect of oral administration of mulberry branch bark powder on the incidence of type II diabetes in mice induced by streptozotocin. Food Nutr Res 2016; 60:31606. [PMID: 27257845 PMCID: PMC4891971 DOI: 10.3402/fnr.v60.31606] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 04/25/2016] [Accepted: 04/27/2016] [Indexed: 12/04/2022] Open
Abstract
Background Diabetes is a group of metabolic diseases that has become a global health problem worldwide. Many researchers have found that mulberry branches have a hypoglycemic effect, but there have been few studies or investigations regarding the use of mulberry branches to prevent the incidence of diabetes. Objective This study aimed to investigate the potential preventive effect of mulberry branch bark powder (MBBP) from Morus multicaulis L against type II diabetes in mice induced by streptozotocin (STZ). Design The normal mice were fed a diet containing 2.5, 5.0, and 10.0%, MBBP, respectively, for 2 weeks. After that, STZ (100 mg/kg) was injected into the caudal vein of these mice. These mice continued to be fed the same diet, and the fasting blood glucose (FBG) levels were monitored on the 17th and 21st days. Results Oral administration of MBBP could effectively inhibit weight loss and maintain the FBG level. The incidence of diabetes in mice was almost inhibited by treatment with 10% MBBP. MBBP could also maintain the original antioxidant capacity and regulate the lipid metabolism in mice. An immunohistochemical assay showed that MBBP could prevent the injury of the insulin-secreting islet beta cells induced by STZ. RT-PCR also confirmed that the mRNA expression of the genes PI3K, Pdk1, Akt, and FoxO1, which were involved in the PI3K/Akt signaling pathway, hardly suffered from STZ in the 10% MBBP-dose group. Conclusions Our results indicate that powdered mulberry branch bark has a powerful anti-diabetic effect. These results clearly illustrated that MBBP has a potential use as a health food additive in the prevention of diabetes.
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Affiliation(s)
- Hua-Yu Liu
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China.,National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, China
| | - Jiang Wang
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China.,National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, China
| | - Jing Ma
- Henan Province Sericulture Scientific Research Institute, Henan, China
| | - Yu-Qing Zhang
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, China.,National Engineering Laboratory for Modern Silk, Soochow University, Suzhou, China;
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Jung Y, Kim I. Chemoselective reduction of quinols as an alternative to Sonogashira coupling: synthesis of polysubstituted benzofurans. Org Biomol Chem 2016; 14:10454-10472. [DOI: 10.1039/c6ob01941b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An efficient synthetic approach to polysubstituted benzofurans is described, using 2-methoxyquinone as a benzofuran backbone.
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Affiliation(s)
- Youngeun Jung
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences
- Yonsei University
- Incheon
- Republic of Korea
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Kuete V, Mbaveng AT, Zeino M, Fozing CD, Ngameni B, Kapche GDWF, Ngadjui BT, Efferth T. Cytotoxicity of three naturally occurring flavonoid derived compounds (artocarpesin, cycloartocarpesin and isobavachalcone) towards multi-factorial drug-resistant cancer cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2015; 22:1096-1102. [PMID: 26547532 DOI: 10.1016/j.phymed.2015.07.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Revised: 07/13/2015] [Accepted: 07/27/2015] [Indexed: 06/05/2023]
Abstract
INTRODUCTION Cancer remains an aggressive deadly disease, if drug resistance develops. This problem is aggravated by the fact that multiple rather than single mechanisms are involved in resistance and that multidrug resistance (MDR) phenomena cause inefficacy of many clinical established anticancer drugs. We are seeking for novel cytotoxic phytochemicals to combat drug-resistant tumour cells. METHODS In the present study, we investigated the cytotoxicity of three naturally occurring flavonoids including two flavones artocarpesin (1) and cycloartocarpesin (2) and one chalcone, isobavachalcone (3) against 9 drug-sensitive and MDR cancer cell lines. The resazurin reduction assay was used to evaluate the cytotoxicity of these compounds, whilst caspase-Glo assay was used to detect caspase activation. Cell cycle, mitochondrial membrane potential (MMP) and levels of reactive oxygen species (ROS) were all analysed via flow cytometry. RESULTS Flavones 1 and 2 as well as chalcone 3 displayed cytotoxic effects at various extent on all the 9 tested cancer cell lines with IC50 values respectively below 106 µM, 50 µM and 25 µM. The IC50 values for the three investigational flavonoids ranged from 23.95 µM (towards hepatocarcinoma HepG2 cells) to 105 µM [towards colon carcinoma HCT116 (p53(-/-)) cells] for 1, from 15.51 µM (towards leukemia CCRF-CEM cells) to 49.83 µM [towards glioblastoma U87MG.ΔEGFR cells] for 2 and from 2.30 µM (towards CCRF-CEM cells) to 23.80 µM [towards colon carcinoma HCT116 (p53(+/+)) cells] for 3 and from 0.20 µM (towards CCRF-CEM cells) to 195.12 µM (towards leukemia CEM/ADR5000 cells) for doxorubicin. Compounds 2 and 3 induced apoptosis in CCRF-CEM leukemia cells, mediated by caspase activation and the disruption of MMP. CONCLUSIONS The three tested flavonoids and mostly chalcone 3 are potential cytotoxic natural products that deserve more investigations to develop novel antineoplastic drugs against multifactorial drug-resistant cancers.
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Affiliation(s)
- Victor Kuete
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of Mainz, Staudinger Weg 5, 55128 Mainz, Germany; Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Armelle T Mbaveng
- Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Maen Zeino
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of Mainz, Staudinger Weg 5, 55128 Mainz, Germany
| | - Christian D Fozing
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Bathelemy Ngameni
- Department of Pharmacognosy and Pharmaceutical Chemistry, Faculty of Medicine and Biomedical Sciences, University of Yaoundé I, Yaoundé, Cameroon
| | | | - Bonaventure T Ngadjui
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Thomas Efferth
- Department of Pharmaceutical Biology, Institute of Pharmacy and Biochemistry, University of Mainz, Staudinger Weg 5, 55128 Mainz, Germany.
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Choi SW, Lee YJ, Ha SB, Jeon YH, Lee DH. Evaluation of Biological Activity and Analysis of Functional Constituents from Different Parts of Mulberry (Morus alba L.) Tree. ACTA ACUST UNITED AC 2015. [DOI: 10.3746/jkfn.2015.44.6.823] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Naik R, Harmalkar DS, Xu X, Jang K, Lee K. Bioactive benzofuran derivatives: Moracins A–Z in medicinal chemistry. Eur J Med Chem 2015; 90:379-93. [DOI: 10.1016/j.ejmech.2014.11.047] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 11/20/2014] [Accepted: 11/24/2014] [Indexed: 12/13/2022]
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Wan LZ, Ma B, Zhang YQ. Preparation of morusin from Ramulus mori and its effects on mice with transplanted H22 hepatocarcinoma. Biofactors 2014; 40:636-45. [PMID: 25422054 DOI: 10.1002/biof.1191] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Accepted: 11/05/2014] [Indexed: 11/08/2022]
Abstract
In this study, we used branches Ramulus mori from cultivated mulberry Husang-32 (Morus multicaulis Perry) as the experimental material and anhydrous ethanol as the extraction solution to obtain the crude extract from the branch bark. The ethanolic extract was successively purified through a macroporous resin, Sephadex LH-20, and semipreparative reversed-phase high-performance liquid chromatography (RP-HPLC). The high-purity monomer was identified as morusin by HPLC with diode array detection (HPLC-DAD) and its UV spectrum. The contents of morusin exhibited almost no difference between the root and branch bark in Husang-32, and morusin was not detected in the leaves. Morusin is able to inhibit the tumor growth of transplanted H22 hepatocarcinoma in mice and has no side effects. The fluorescence quantitative real-time PCR (qRT-PCR) results indicate that morusin has a marked inhibitory effect on liver cancer cells through a mechanism that may be related increases in the expression of p53, Survivin, CyclinB1, and Caspase-3 and a decrease in NF-κ B gene expression. The influence of this compound is more apparent in the Caspase-3 and the NF-κ B genes.
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MESH Headings
- Animals
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Carcinoma, Hepatocellular/drug therapy
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/pathology
- Caspase 3/genetics
- Caspase 3/metabolism
- Cell Survival/drug effects
- Cyclin B1/agonists
- Cyclin B1/genetics
- Cyclin B1/metabolism
- Ethanol
- Flavonoids/isolation & purification
- Flavonoids/pharmacology
- Gene Expression Regulation, Neoplastic
- Inhibitor of Apoptosis Proteins/agonists
- Inhibitor of Apoptosis Proteins/genetics
- Inhibitor of Apoptosis Proteins/metabolism
- Liver Neoplasms, Experimental/drug therapy
- Liver Neoplasms, Experimental/genetics
- Liver Neoplasms, Experimental/metabolism
- Liver Neoplasms, Experimental/pathology
- Male
- Mice
- Mice, Inbred ICR
- Morus/chemistry
- NF-kappa B/antagonists & inhibitors
- NF-kappa B/genetics
- NF-kappa B/metabolism
- Plant Bark/chemistry
- Plant Extracts/chemistry
- Plant Roots/chemistry
- Repressor Proteins/agonists
- Repressor Proteins/genetics
- Repressor Proteins/metabolism
- Solvents
- Survivin
- Tumor Burden/drug effects
- Tumor Suppressor Protein p53/agonists
- Tumor Suppressor Protein p53/genetics
- Tumor Suppressor Protein p53/metabolism
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Affiliation(s)
- Liang-Ze Wan
- Silk Biotechnology Laboratory, School of Biology and Basic Medical Sciences, Soochow University, Suzhou, 215123, People's Republic of China
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Mawabo IK, Noumedem JAK, Kuiate JR, Kuete V. Tetracycline improved the efficiency of other antimicrobials against Gram-negative multidrug-resistant bacteria. J Infect Public Health 2014; 8:226-33. [PMID: 25458915 DOI: 10.1016/j.jiph.2014.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Revised: 08/30/2014] [Accepted: 09/17/2014] [Indexed: 11/29/2022] Open
Abstract
Treatment of infectious diseases with antimicrobials constituted a great achievement in the history of medicine. Unfortunately, the emergence of resistant strains of bacteria to all classes of antimicrobials limited their efficacy. The present study was aimed at evaluating the effect of combinations of antibiotics on multi-drug resistant Gram-negative (MDRGN) bacteria. A liquid micro-broth dilution method was used to evaluate the antibacterial activity of 10 different classes of antimicrobials on 20 bacterial strains belonging to six different species. The antimicrobials were associated with phenylalanine β-naphthylamide (PAβN), an efflux pump inhibitor, and with other antimicrobials at their sub-inhibitory concentrations. The effectiveness of each combination was monitored using the minimal inhibitory concentration (MIC) and the fractional inhibitory concentration (FIC). Most of the antimicrobials tested showed low antibacterial activity with a MIC value of 128 mg/L on a majority of the bacterial strains, justifying their multidrug-resistant (MDR) profile. Synergistic effects were mostly observed (FIC≤0.5) when ampicillin (AMP), cloxacillin (CLX), erythromycin (ERY), chloramphenicol (CHL), kanamycin (KAN) and streptomycin (STR) were combined with tetracycline (TET) at the sub-inhibitory concentration of MIC/5 or MIC/10. The results of the present work suggest that the association of several antimicrobials with TET could improve the fight against MDRGN bacterial species.
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Affiliation(s)
- Isabelle K Mawabo
- Department of Biochemistry, Faculty of Science, University of Dschang, Cameroon
| | - Jaurès A K Noumedem
- Department of Biochemistry, Faculty of Science, University of Dschang, Cameroon
| | - Jules R Kuiate
- Department of Biochemistry, Faculty of Science, University of Dschang, Cameroon
| | - Victor Kuete
- Department of Biochemistry, Faculty of Science, University of Dschang, Cameroon.
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Luís A, Breitenfeld L, Ferreira S, Duarte AP, Domingues F. Antimicrobial, antibiofilm and cytotoxic activities of Hakea sericea Schrader extracts. Pharmacogn Mag 2014; 10:S6-S13. [PMID: 24914310 PMCID: PMC4047586 DOI: 10.4103/0973-1296.127331] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 12/03/2012] [Accepted: 02/21/2014] [Indexed: 11/08/2022] Open
Abstract
Background: Hakea sericea Schrader is an invasive shrub in Portuguese forests. Objective: The goal of this work was to evaluate the antimicrobial activity of H. sericea extracts against several strains of microorganisms, including the ability to inhibit the formation of biofilms. Additionally the cytotoxic properties of these extracts, against human cells, were assessed. Materials and Methods: The antimicrobial activity of the methanolic extracts of H. sericea was assessed by disk diffusion assay and Minimum Inhibitory Concentration (MIC) value determination. The antibiofilm activity was determined by quantification of total biofilm biomass with crystal violet. Cytotoxicity was evaluated by hemolysis assay and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) test. Results: For Gram-positive bacteria, MIC values of H. sericea methanolic extracts ranged between 0.040 and 0.625 mg/mL, whereas the fruits extract yielded the lowest MIC for several strains of microorganisms, namely, S. aureus, B. cereus, L. monocytogenes and clinical methicillin-resistant S. aureus (MRSA). Stems and fruits extract at 2.5 mg/mL effectively eradicated the biofilm of S. aureus ATCC 25923, SA 01/10 and MRSA 12/10. Regarding leaves extract, hemolysis was not observed, and in the case of stems and fruits, hemolysis was verified only for higher concentrations, suggesting its low toxicity. Fruits extract presented no toxic effect to normal human dermal fibroblasts (NHDF) cells however for concentrations of 0.017 and 0.008 mg/mL this extract was able to decrease human breast adenocarcinoma cells (MCF-7) viability in about 60%, as MTT test results had confirmed. This is a clearly demonstrator of the cytotoxicity of this extract against MCF-7 cells.
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Affiliation(s)
- Angelo Luís
- CICS-UBI - Health Sciences Research Centre, Faculty of Health Sciences, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Luiza Breitenfeld
- CICS-UBI - Health Sciences Research Centre, Faculty of Health Sciences, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Susana Ferreira
- CICS-UBI - Health Sciences Research Centre, Faculty of Health Sciences, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Ana Paula Duarte
- CICS-UBI - Health Sciences Research Centre, Faculty of Health Sciences, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Fernanda Domingues
- CICS-UBI - Health Sciences Research Centre, Faculty of Health Sciences, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
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Thabti I, Elfalleh W, Tlili N, Ziadi M, Campos MG, Ferchichi A. Phenols, Flavonoids, and Antioxidant and Antibacterial Activity of Leaves and Stem Bark ofMorusSpecies. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2013. [DOI: 10.1080/10942912.2012.660722] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Seukep JA, Fankam AG, Djeussi DE, Voukeng IK, Tankeo SB, Noumdem JAK, Kuete AHLN, Kuete V. Antibacterial activities of the methanol extracts of seven Cameroonian dietary plants against bacteria expressing MDR phenotypes. SPRINGERPLUS 2013; 2:363. [PMID: 23961425 PMCID: PMC3738912 DOI: 10.1186/2193-1801-2-363] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Accepted: 07/29/2013] [Indexed: 11/10/2022]
Abstract
The morbidity and mortality caused by bacterial infections significantly increased with resistance to commonly used antibiotics. This is partially due to the activation of efflux pumps in Gram-negative bacteria. The present work designed to assess the in vitro antibacterial activities of seven Cameroonian dietary plants (Sesamum indicum, Sesamum radiatum, Cinnamomum zeylanicum, Corchous olitorius, Cyperus esculentus, Adansonia digitata, Aframomum kayserianum), against multidrug resistant (MDR) Gram-negative bacteria over expressing active efflux pumps. The standard phytochemical methods were used to detect the main classes of secondary metabolites in the extracts. The antibacterial activities of the studied extracts in the absence or presence of an efflux pump inhibitor (PAβN) were evaluated using liquid microbroth dilution method. The results obtained indicated that apart from the extract of C. esculentus, all other samples contained alkaloids, phenols and polyphenols meanwhile other classes of chemicals were selectively present. The studied extracts displayed antibacterial activities with minimal inhibitory concentrations (MICs) values ranged from 64 to 1024 μg/mL on the majority of the 27 tested microbial strains. The extract of S. indicum was active against 77.77% of the tested microorganisms whilst the lowest MIC value (64 μg/mL) was recorded with that of A. kayserianum against E. aerogenes EA294. The results of the present work provide baseline information on the possible used of the tested Cameroonian dietary plants in the treatment of bacterial infections including multi-drug resistant phenotypes.
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Affiliation(s)
- Jackson A Seukep
- />Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Aimé G Fankam
- />Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Doriane E Djeussi
- />Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Igor K Voukeng
- />Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Simplice B Tankeo
- />Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Jaurès AK Noumdem
- />Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Antoine HLN Kuete
- />Department of Organic Chemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
| | - Victor Kuete
- />Department of Biochemistry, Faculty of Science, University of Dschang, Dschang, Cameroon
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Navrátilová A, Schneiderová K, Veselá D, Hanáková Z, Fontana A, Dall'Acqua S, Cvačka J, Innocenti G, Novotná J, Urbanová M, Pelletier J, Čížek A, Žemličková H, Šmejkal K. Minor C-geranylated flavanones from Paulownia tomentosa fruits with MRSA antibacterial activity. PHYTOCHEMISTRY 2013; 89:104-113. [PMID: 23453910 DOI: 10.1016/j.phytochem.2013.01.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 12/22/2012] [Accepted: 01/10/2013] [Indexed: 06/01/2023]
Abstract
Exhaustive chromatographic separation of the chloroform portion of the ethanolic extract obtained from Paulownia tomentosa (Thunb). Steud. (Paulowniaceae) fruits has led to isolation of ten C-6 geranylated flavanones tomentodiplacone C-I and mimulone C-E, featured by 3'-methoxy and 4'-hydroxy or 4'-hydroxy substitution of the B-ring of the flavonoid, respectively. The structures of these compounds were determined by using mass spectrometry (including HRMS) and 1D and 2D NMR spectroscopy. The absolute configurations of the compounds at C-2 were determined using circular dichroism. The obtained compounds showed the presence of a geranyl moiety functionalized by a carbonyl, hydroxyl or methoxyl group, or by formation of tetrahydrofuran or fused-pyrane ring, respectively. All of the flavanones described were isolated for the first time from a natural source. The antibacterial activities of selected compounds isolated along with the previously isolated geranylated flavanones were evaluated against a common panel of microbes and MRSA strains. The selected isolated compounds were tested for their ability to affect eukaryotic translation initiation via dual-luciferase reporter assay (firefly and renilla).
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Affiliation(s)
- Alice Navrátilová
- Department of Natural Drugs, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences Brno, Palackého 1-3, CZ-612 42 Brno, Czech Republic.
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Balachandran C, Duraipandiyan V, Al-Dhabi NA, Balakrishna K, Kalia NP, Rajput VS, Khan IA, Ignacimuthu S. Antimicrobial and Antimycobacterial Activities of Methyl Caffeate Isolated from Solanum torvum Swartz. Fruit. Indian J Microbiol 2012; 52:676-81. [PMID: 24293730 DOI: 10.1007/s12088-012-0313-8] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 09/26/2012] [Indexed: 11/25/2022] Open
Abstract
ABSTRACT Solanum torvum Swartz. (Solanaceae) fruit is traditionally used for the treatment of bacterial and fungal infections. The methanolic extract was subjected to activity guided fractionation by column chromatography over silica gel. The structure of the compound was elucidated using physical and spectroscopic data. The antimicrobial activity was screened using five Gram-positive bacteria, six Gram-negative bacteria, seven clinical isolates and four fungi. Antimycobacterial activity was screened against two Mycobacterium strains. The zone of inhibition by methyl caffeate ranged from 0 to 22 mm. The lowest minimum inhibitory concentration (MIC) values of methyl caffeate were: 50 μg/ml against P. vulgaris, 25 μg/ml against K. pneumoniae (ESBL-3971), 8 μg/ml against M. tuberculosis (H(37)Rv) and 8 μg/ml against M. tuberculosis (Rif(R)). Methyl caffeate showed moderate antimicrobial and prominent antimycobacterial activities. Methyl caffeate can be evaluated further for drug development.
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Biological activities of phenolic compounds and ethanolic extract of Halacsya sendtneri (Boiss) Dőrfler. Open Life Sci 2012. [DOI: 10.2478/s11535-012-0021-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractThe objective of this study was to evaluate the efficacy of the ethanolic extract of endemic plant Halacsya sendtneri in inhibiting the growing of the test fungi and bacteria as well as to determine its genotoxic potential and toxicity using the Allium anaphase-telophase assay. Minimum inhibitory concentrations (MIC) were determined for 15 indicator strains of pathogens, representing both bacteria and fungi. The highest susceptibility to the ethanolic extract of H.sendtneri was exhibited by Pseudomonas glycinea (FSB4), (MIC=0.09 mg/ml) among the bacteria, and by Phialophora fastigiata (FSB81), (MIC=1.95 mg/ml) among the fungi. The composition of H. sendtneri extracts was also determined using HPLC analysis. Rosmarinic acid was found to be the dominant phenolic compound. The Allium anaphase-telophase genotoxicity assay revealed that the ethanolic extract of H. sendtneri at concentrations of 31.5 mg/l and below does not produce toxic or genotoxic effects. This is the first report of chemical constituents, genotoxic and antimicrobial activities of the endemic species, H. sendtneri.
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Karunai Raj M, Balachandran C, Duraipandiyan V, Agastian P, Ignacimuthu S. Antimicrobial activity of Ulopterol isolated from Toddalia asiatica (L.) Lam.: a traditional medicinal plant. JOURNAL OF ETHNOPHARMACOLOGY 2012; 140:161-165. [PMID: 22265751 DOI: 10.1016/j.jep.2012.01.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 12/16/2011] [Accepted: 01/05/2012] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The leaves of Toddalia asiatica (L.) Lam. (Rutaceae) are widely used in folk medicine in India to treat various ailments like cough, malaria, indigestion, influenza lung diseases and rheumatism, fever, stomach ailments, cholera and diarrhea. In our earlier communication we have reported the antimicrobial study on the various extracts of the leaves and the isolation and identification of Flindersine, a quinolone alkaloid as the major active principle. In the present study, we report the antibacterial and antifungal activities of Ulopterol, a coumarin isolated as another major active antimicrobial principle. MATERIALS AND METHODS The leaves were successively extracted with hexane, chloroform, ethyl acetate, methanol and water. The extracts were studied for their antimicrobial activity against selected bacteria and fungi by using disc-diffusion method. The ethyl acetate extract which was found to possess highest antimicrobial activity was subjected to activity guided fractionation by column chromatography over silica gel. This resulted in the isolation of the coumarin, Ulopetrol, an active principle besides Flindersine which was reported by us earlier. The structure of the compound was elucidated using physical and spectroscopic data. Flindersine and Ulopterol were quantified by HPLC. RESULTS Ulopterol showed activity against the bacteria viz. Staphylococcus epidermidis, Enterobacter aerogenes, Shigella flexneri, Klebsiella pneumoniae (ESBL-3967), Escherichia coli (ESBL-3984) and fungi viz. Aspergillus flavus, Candida krusei and Botrytis cinerea. Quantification by HPLC showed the content of Flindersine and Ulopterol to be 0.361% and 0.266% respectively on dry weight basis of the leaves. CONCLUSIONS Ethyl acetate extract (successive extraction) contained Ulopterol, a coumarin, besides Flindersine, a quinolone alkaloid, as a major active principle in the antimicrobial studies. This is the first report of the antimicrobial activity of Ulopterol and also its first report from the plant.
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Affiliation(s)
- M Karunai Raj
- Division of Ethnopharmacology, Entomology Research Institute, Loyola College, Chennai 600 034, India
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Song WJ, Yang XD, Zeng XH, Xu XL, Zhang GL, Zhang HB. Synthesis and cytotoxic activities of novel hybrid compounds of imidazole scaffold-based 2-substituted benzofurans. RSC Adv 2012. [DOI: 10.1039/c2ra20376f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Synthesis and antimicrobial evaluation of new benzofuran derivatives. Eur J Med Chem 2011; 46:3526-30. [DOI: 10.1016/j.ejmech.2011.04.053] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 04/20/2011] [Accepted: 04/21/2011] [Indexed: 11/23/2022]
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Kuete V, Kamga J, Sandjo LP, Ngameni B, Poumale HMP, Ambassa P, Ngadjui BT. Antimicrobial activities of the methanol extract, fractions and compounds from Ficus polita Vahl. (Moraceae). BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 11:6. [PMID: 21269424 PMCID: PMC3037948 DOI: 10.1186/1472-6882-11-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Accepted: 01/26/2011] [Indexed: 11/10/2022]
Abstract
BACKGROUND Many plants of the family Moraceae are used in the treatment of infectious diseases. Ficus polita Vahl., an edible plant belonging to this family is used traditionally in case of dyspepsia, infectious diseases, abdominal pains and diarrhea. The present work was designed to assess the antimicrobial activity of the methanol extract from the roots of F. polita (FPR), as well as that of its fractions (FPR1-5) and two of the eight isolated compounds, namely euphol-3-O-cinnamate (1) and (E)-3,5,4'-trihydroxy-stilbene-3,5-O-β-D-diglucopyranoside (8). METHODS The liquid microdilution assay was used in the determination of the minimal inhibitory concentration (MIC) and the minimal microbicidal concentration (MMC), against seven bacterial and one fungal species. RESULTS The results of the MIC determination showed that the crude extract, fractions FPR1, FPR2 and compound 8 were able to prevent the growth of the eight tested microorganisms. Other samples showed selective activity. The lowest MIC value of 64 μg/ml for the crude extract was recorded on 50% of the studied microbial species. The corresponding value for fractions of 32 μg/ml was obtained on Salmonella typhi, Escherichia coli and Candida albicans ATCC strains. The MIC values recorded with compound 8 on the resistant Pseudomonas aeruginosa PA01 strain was equal to that of chloramphenicol used as reference antibiotic. CONCLUSION The obtained results highlighted the interesting antimicrobial potency of F. polita as well as that of compound 8, and provided scientific basis for the traditional use of this taxon in the treatment of microbial infections.
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Affiliation(s)
- Victor Kuete
- Department of Biochemistry, Faculty of Science, University of Dschang, Cameroon
| | - Justin Kamga
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, Cameroon
| | - Louis P Sandjo
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, Cameroon
| | - Bathelemy Ngameni
- Department of Pharmacy and Traditional Pharmacopoeia, Faculty of Medicine and Biomedical Science, University of Yaoundé I, Cameroon
| | - Herve MP Poumale
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, Cameroon
| | - Pantaleon Ambassa
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, Cameroon
| | - Bonaventure T Ngadjui
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, Cameroon
- Department of Pharmacy and Traditional Pharmacopoeia, Faculty of Medicine and Biomedical Science, University of Yaoundé I, Cameroon
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Kuete V, Azebaze AGB, Mbaveng A, Nguemfo EL, Tshikalange ET, Chalard P, Nkengfack AE. Antioxidant, antitumor and antimicrobial activities of the crude extract and compounds of the root bark of Allanblackia floribunda. PHARMACEUTICAL BIOLOGY 2011; 49:57-65. [PMID: 20738222 DOI: 10.3109/13880209.2010.494673] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
CONTEXT Allanblackia floribunda Oliver (Guttiferae) is an African medicinal plant used traditionally to treat a variety of ailments. OBJECTIVE We investigated the antitumor, radical scavenging, antimycobacterial, antibacterial and antifungal activities of the root bark extract of A. floribunda and three isolated phenolics, namely 1,7-dihydroxyxanthone (1), morelloflavone (2) and 7'-O-glucoside of morelloflavone (3). MATERIALS AND METHODS The 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) radical scavenging assay was used for antioxidant tests, while crown gall tumor assay was used for assay of antitumor activity. The p-iodonitrotetrazolium chloride (INT) colorimetry and Microplate Alamar Blue Assay (MABA) were used for antimicrobial investigations. RESULTS Moderate tumor reducing activity was observed with the extract, while better activities were recorded with compounds 2 and 3. The antimycobacterial and antitumor activities of the extract are being reported for the first time. The DPPH radical scavenging test showed that all the studied samples were able to scavenge more than 50% of the free radical, with compound 3 showing the best inhibitory activity (IC(50) of 49.08 µg/mL). Compounds 1 to 3 prevented the growth of Mycobacterium smegmatis and both extract and compound 2 were active on M. tuberculosis. The lowest MIC value for the extract (9.76 μg/mL) was recorded against Enterobacter aerogenes while the corresponding value for the compounds (4.88 µg/mL) was obtained with compound 2 on Trichophyton rubrum. DISCUSSION AND CONCLUSION The overall results of the present work provide baseline information for the potential use of the root bark extract of A. floribunda as an antimicrobial, antitumor and antioxidant phytomedicine.
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Affiliation(s)
- Victor Kuete
- Department of Biochemistry, University of Dschang, Cameroon.
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