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Abass S, Parveen R, Irfan M, Malik Z, Husain SA, Ahmad S. Mechanism of antibacterial phytoconstituents: an updated review. Arch Microbiol 2024; 206:325. [PMID: 38913205 DOI: 10.1007/s00203-024-04035-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2024] [Accepted: 06/05/2024] [Indexed: 06/25/2024]
Abstract
The increase of multiple drug resistance bacteria significantly diminishes the effectiveness of antibiotic armory and subsequently exaggerates the level of therapeutic failure. Phytoconstituents are exceptional substitutes for resistance-modifying vehicles. The plants appear to be a deep well for the discovery of novel antibacterial compounds. This is owing to the numerous enticing characteristics of plants, they are easily accessible and inexpensive, extracts or chemicals derived from plants typically have significant levels of action against infections, and they rarely cause serious adverse effects. The enormous selection of phytochemicals offers very distinct chemical structures that may provide both novel mechanisms of antimicrobial activity and deliver us with different targets in the interior of the bacterial cell. They can directly affect bacteria or act together with the crucial events of pathogenicity, in this manner decreasing the aptitude of bacteria to create resistance. Abundant phytoconstituents demonstrate various mechanisms of action toward multi drug resistance bacteria. Overall, this comprehensive review will provide insights into the potential of phytoconstituents as alternative treatments for bacterial infections, particularly those caused by multi drug resistance strains. By examining the current state of research in this area, the review will shed light on potential future directions for the development of new antimicrobial therapies.
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Affiliation(s)
- Sageer Abass
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, 110025, India
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
- Centre of Excellence in Unani Medicine (Pharmacognosy and Pharmacology), Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Rabea Parveen
- Centre of Excellence in Unani Medicine (Pharmacognosy and Pharmacology), Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Mohammad Irfan
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, 110025, India
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Zoya Malik
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
- Centre of Excellence in Unani Medicine (Pharmacognosy and Pharmacology), Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Syed Akhtar Husain
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Sayeed Ahmad
- Centre of Excellence in Unani Medicine (Pharmacognosy and Pharmacology), Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India.
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Wang D, Tang T, Sun J, Han Y, Yan CG. Synthesis of Spiro[indoline-pyridine]-dicarboxylates and Substituted Alkylidene Oxindoles by Azomethine Ylides and MBH Carbonates of Isatins. Org Lett 2024; 26:4117-4121. [PMID: 38722200 DOI: 10.1021/acs.orglett.4c01236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2024]
Abstract
We have developed an efficient protocol for the synthesis of spiro[indoline-pyridine]dicarboxylates and substituted alkylidene oxindoles through [3 + 3] cycloaddition and Michael addition individually by azomethine ylides and various MBH carbonates of isatins. The selective generation of cyclic products and chain products was achieved by changing the substituents at the 3-position of the oxindoles. The features of this method include convenient catalysts, mild reaction conditions, and broad substrate scopes.
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Affiliation(s)
- Daqian Wang
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Ting Tang
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Ying Han
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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Sandulovici RC, Gălăţanu ML, Cima LM, Panus E, Truţă E, Mihăilescu CM, Sârbu I, Cord D, Rîmbu MC, Anghelache ŞA, Panţuroiu M. Phytochemical Characterization, Antioxidant, and Antimicrobial Activity of the Vegetative Buds from Romanian Spruce, Picea abies (L.) H. Karst. Molecules 2024; 29:2128. [PMID: 38731619 PMCID: PMC11085860 DOI: 10.3390/molecules29092128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/22/2024] [Accepted: 05/01/2024] [Indexed: 05/13/2024] Open
Abstract
This study aims to investigate the vegetative buds from Picea abies (spruce), naturally found in a central region of Romania, through a comprehensive analysis of the chemical composition to identify bioactive compounds responsible for pharmacological properties. Using HPLC/derivatization technique of GC-MS and quantitative spectrophotometric assays, the phenolic profile, and main components of an ethanolic extract from the buds were investigated. The essential oil was characterized by GC-MS. Moreover, the antioxidant activity with the DPPH method, and the antimicrobial activity were tested. Heavy metal detection was performed by graphite furnace atomic absorption spectrometry. The main components of the alcoholic extract were astragalin, quercetin, kaempferol, shikimic acid, and quinic acid. A total content of 25.32 ± 2.65 mg gallic acid equivalent per gram of dry plant (mg GAE/g DW) and of 10.54 ± 0.083 mg rutin equivalents/g of dry plant (mg RE/g DW) were found. The essential oil had D-limonene, α-cadinol, δ-cadinene, 13-epimanool, and δ-3-carene as predominant components. The spruce vegetative buds exhibited significant antioxidant activity (IC50 of 53 μg/mL) and antimicrobial effects against Staphylococcus aureus. Furthermore, concentrations of heavy metals Pb and Cd were below detection limits, suggesting that the material was free from potentially harmful contaminants. The results confirmed the potential of this indigenous species to be used as a source of compounds with pharmacological utilities.
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Affiliation(s)
- Roxana Colette Sandulovici
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
| | - Mona Luciana Gălăţanu
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
| | - Luiza Mădălina Cima
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
| | - Emilia Panus
- Microbiology and Molecular Biology Laboratory, Public Health Constanta, 900587 Constanta, Romania;
| | - Elena Truţă
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
| | - Carmen Marinela Mihăilescu
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
- National Institute for Research and Development in Microtechnologies, 126A. Erou Iancu Nicolae Street, 72996 Bucharest, Romania
| | - Iulian Sârbu
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
| | - Daniel Cord
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
- National Agency for Medicines and Medical Devices of Romania, Stefan Sanatescu Street 48, 011478 Bucharest, Romania
| | - Mirela Claudia Rîmbu
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
| | - Ştefan Alexandru Anghelache
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
| | - Mariana Panţuroiu
- Faculty of Pharmacy, Titu Maiorescu University, 16 Sincai, Boulevard, 040314 Bucharest, Romania or (R.C.S.); (L.M.C.); (E.T.); (C.M.M.); (I.S.); (D.C.); (M.C.R.); (Ş.A.A.); (M.P.)
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Yue D, Zheng D, Bai Y, Yang L, Yong J, Li Y. Insights into the anti-Candida albicans properties of natural phytochemicals: An in vitro and in vivo investigation. Phytother Res 2024; 38:2518-2538. [PMID: 38450815 DOI: 10.1002/ptr.8148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 01/09/2024] [Accepted: 01/19/2024] [Indexed: 03/08/2024]
Abstract
Invasive candidiasis, attributed to Candida albicans, has long been a formidable threat to human health. Despite the advent of effective therapeutics in recent decades, the mortality rate in affected patient populations remains discouraging. This is exacerbated by the emergence of multidrug resistance, significantly limiting the utility of conventional antifungals. Consequently, researchers are compelled to continuously explore novel solutions. Natural phytochemicals present a potential adjunct to the existing arsenal of agents. Previous studies have substantiated the efficacy of phytochemicals against C. albicans. Emerging evidence also underscores the promising application of phytochemicals in the realm of antifungal treatment. This review systematically delineates the inhibitory activity of phytochemicals, both in monotherapy and combination therapy, against C. albicans in both in vivo and in vitro settings. Moreover, it elucidates the mechanisms underpinning the antifungal properties, encompassing (i) cell wall and plasma membrane damage, (ii) inhibition of efflux pumps, (iii) induction of mitochondrial dysfunction, and (iv) inhibition of virulence factors. Subsequently, the review introduces the substantial potential of nanotechnology and photodynamic technology in enhancing the bioavailability of phytochemicals. Lastly, it discusses current limitations and outlines future research priorities, emphasizing the need for high-quality research to comprehensively establish the clinical efficacy and safety of phytochemicals in treating fungal infections. This review aims to inspire further contemplation and recommendations for the effective integration of natural phytochemicals in the development of new medicines for patients afflicted with C. albicans.
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Affiliation(s)
- Daifan Yue
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Dongming Zheng
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yuxin Bai
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Linlan Yang
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jiangyan Yong
- Department of Clinical Laboratory, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yan Li
- College of Medical Technology, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Tienaho J, Fidelis M, Brännström H, Hellström J, Rudolfsson M, Kumar Das A, Liimatainen J, Kumar A, Kurkilahti M, Kilpeläinen P. Valorizing Assorted Logging Residues: Response Surface Methodology in the Extraction Optimization of a Green Norway Spruce Needle-Rich Fraction To Obtain Valuable Bioactive Compounds. ACS SUSTAINABLE RESOURCE MANAGEMENT 2024; 1:237-249. [PMID: 38414817 PMCID: PMC10895920 DOI: 10.1021/acssusresmgt.3c00050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/17/2024] [Accepted: 01/17/2024] [Indexed: 02/29/2024]
Abstract
During stemwood harvesting, substantial volumes of logging residues are produced as a side stream. Nevertheless, industrially feasible processing methods supporting their use for other than energy generation purposes are scarce. Thus, the present study focuses on biorefinery processing, employing response surface methodology to optimize the pressurized extraction of industrially assorted needle-rich spruce logging residues with four solvents. Eighteen experimental points, including eight center point replicates, were used to optimize the extraction temperature (40-135 °C) and time (10-70 min). The extraction optimization for water, water with Na2CO3 + NaHSO3 addition, and aqueous ethanol was performed using yield, total dissolved solids (TDS), antioxidant activity (FRAP, ORAC), antibacterial properties (E. coli, S. aureus), total phenolic content (TPC), condensed tannin content, and degree of polymerization. For limonene, evaluated responses were yield, TDS, antioxidant activity (CUPRAC, DPPH), and TPC. Desirability surfaces were created using the responses showing a coefficient of determination (R2) > 0.7, statistical significance (p ≤ 0.05), precision > 4, and statistically insignificant lack-of-fit (p > 0.1). The optimal extraction conditions were 125 °C and 68 min for aqueous ethanol, 120 °C and 10 min for water, 111 °C and 49 min for water with Na2CO3 + NaHSO3 addition, and 134 °C and 41 min for limonene. The outcomes contribute insights to industrial logging residue utilization for value-added purposes.
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Affiliation(s)
- Jenni Tienaho
- Production Systems, Natural Resources Institute Finland (Luke), Latokartanonkaari 9, FI-00790 Helsinki, Finland
| | - Marina Fidelis
- Production Systems, Natural Resources Institute Finland (Luke), Latokartanonkaari 9, FI-00790 Helsinki, Finland
- Food Sciences Unit, Department of Life Technologies, University of Turku, FI-20014 Turku, Finland
| | - Hanna Brännström
- Production Systems, Natural Resources Institute Finland (Luke), Teknologiakatu 7, FI-67100 Kokkola, Finland
| | - Jarkko Hellström
- Production Systems, Natural Resources Institute Finland (Luke), Myllytie 1, FI-31600 Jokioinen, Finland
| | - Magnus Rudolfsson
- Unit of Biomass Technology and Chemistry, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
| | - Atanu Kumar Das
- Unit of Biomass Technology and Chemistry, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden
| | - Jaana Liimatainen
- Production Systems, Natural Resources Institute Finland (Luke), Latokartanonkaari 9, FI-00790 Helsinki, Finland
| | - Anuj Kumar
- Production Systems, Natural Resources Institute Finland (Luke), Latokartanonkaari 9, FI-00790 Helsinki, Finland
| | - Mika Kurkilahti
- Natural Resources, Natural Resources Institute Finland (Luke), Itäinen Pitkäkatu 4 A, FI-20520 Turku, Finland
| | - Petri Kilpeläinen
- Production Systems, Natural Resources Institute Finland (Luke), Latokartanonkaari 9, FI-00790 Helsinki, Finland
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Phytochemical Profiling of Sambucus nigra L. Flower and Leaf Extracts and Their Antimicrobial Potential against Almond Tree Pathogens. Int J Mol Sci 2023; 24:ijms24021154. [PMID: 36674670 PMCID: PMC9866908 DOI: 10.3390/ijms24021154] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023] Open
Abstract
Despite extensive research on the chemical composition of elderberries and their numerous uses in pharmaceutical, beverage, and food production, there is still a lack of knowledge about Sambucus nigra leaves and flowers' antimicrobial activity against plant pathogens. In this study, the phytoconstituents of their aqueous ammonia extracts were first characterized by infrared spectroscopy and gas chromatography-mass spectrometry. The major phytocompounds identified in the flower extract were octyl 2-methylpropanoate; 3,5-dihydroxy-6-methyl-2,3-dihydropyran-4-one; propyl malonic acid; adenine; and 1-methyl-2-piperidinemethanol. Concerning the leaf extract, 1,6-anhydro-β-D-glucopyranose; oleic acid; 2,1,3-benzothiadiazole; 2,3-dihydro-benzofuran; and 4-((1E)-3-hydroxy-1-propenyl)-2-methoxyphenol and other phenol derivatives were the main constituents. The potential of the extracts to act as bioprotectants was then investigated against three almond tree pathogens: Diaporthe amygdali, Phytophthora megasperma, and Verticillium dahliae. In vitro tests showed higher activity of the flower extract, with EC90 values in the 241-984 μg·mL-1 range (depending on the pathogen) vs. 354-1322 μg·mL-1 for the leaf extract. In addition, the flower extract led to full protection against P. megasperma at a dose of 1875 μg·mL-1 in ex situ tests on artificially-infected excised almond stems. These inhibitory concentrations were lower than those of commercial fungicides. These findings suggest that S. nigra aerial organs may be susceptible to valorization as an alternative to synthetic fungicides for the protection of this important crop.
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Gómez-Gaviria M, Ramírez-Sotelo U, Mora-Montes HM. Non- albicans Candida Species: Immune Response, Evasion Mechanisms, and New Plant-Derived Alternative Therapies. J Fungi (Basel) 2022; 9:jof9010011. [PMID: 36675832 PMCID: PMC9862154 DOI: 10.3390/jof9010011] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/18/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Fungal infections caused by Candida species have become a constant threat to public health, especially for immunocompromised patients, who are considered susceptible to this type of opportunistic infections. Candida albicans is known as the most common etiological agent of candidiasis; however, other species, such as Candida tropicalis, Candida parapsilosis, Nakaseomyces glabrata (previously known as Candida glabrata), Candida auris, Candida guilliermondii, and Pichia kudriavzevii (previously named as Candida krusei), have also gained great importance in recent years. The increasing frequency of the isolation of this non-albicans Candida species is associated with different factors, such as constant exposure to antifungal drugs, the use of catheters in hospitalized patients, cancer, age, and geographic distribution. The main concerns for the control of these pathogens include their ability to evade the mechanisms of action of different drugs, thus developing resistance to antifungal drugs, and it has also been shown that some of these species also manage to evade the host's immunity. These biological traits make candidiasis treatment a challenging task. In this review manuscript, a detailed update of the recent literature on the six most relevant non-albicans Candida species is provided, focusing on the immune response, evasion mechanisms, and new plant-derived compounds with antifungal properties.
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Mitra S, Anand U, Jha NK, Shekhawat MS, Saha SC, Nongdam P, Rengasamy KRR, Proćków J, Dey A. Anticancer Applications and Pharmacological Properties of Piperidine and Piperine: A Comprehensive Review on Molecular Mechanisms and Therapeutic Perspectives. Front Pharmacol 2022; 12:772418. [PMID: 35069196 PMCID: PMC8776707 DOI: 10.3389/fphar.2021.772418] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/18/2021] [Indexed: 12/26/2022] Open
Abstract
Piperine and piperidine are the two major alkaloids extracted from black pepper (Piper nigrum); piperidine is a heterocyclic moiety that has the molecular formula (CH2)5NH. Over the years, many therapeutic properties including anticancer potential of these two compounds have been observed. Piperine has therapeutic potential against cancers such as breast cancer, ovarian cancer, gastric cancer, gliomal cancer, lung cancer, oral squamous, chronic pancreatitis, prostate cancer, rectal cancer, cervical cancer, and leukemia. Whereas, piperidine acts as a potential clinical agent against cancers, such as breast cancer, prostate cancer, colon cancer, lung cancer, and ovarian cancer, when treated alone or in combination with some novel drugs. Several crucial signalling pathways essential for the establishment of cancers such as STAT-3, NF-κB, PI3k/Aκt, JNK/p38-MAPK, TGF-ß/SMAD, Smac/DIABLO, p-IκB etc., are regulated by these two phytochemicals. Both of these phytochemicals lead to inhibition of cell migration and help in cell cycle arrest to inhibit survivability of cancer cells. The current review highlights the pharmaceutical relevance of both piperine and piperidine against different types of cancers.
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Affiliation(s)
- Sicon Mitra
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, India
| | - Uttpal Anand
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida, India
| | - Mahipal S Shekhawat
- Department of Plant Biology and Biotechnology, Kanchi Mamunivar Government Institute for Postgraduate Studies and Research, Lawspet, India
| | - Suchismita Chatterjee Saha
- Department of Zoology, Nabadwip Vidyasagar College (Affiliated to the University of Kalyani), Nabadwip, India
| | | | - Kannan R R Rengasamy
- Green Biotechnologies Research Centre of Excellence, University of Limpopo, Sovenga, South Africa
| | - Jarosław Proćków
- Department of Plant Biology, Institute of Environmental Biology, Wrocław University of Environmental and Life Sciences, Wrocław, Poland
| | - Abhijit Dey
- Ethnopharmacology and Natural Product Research Laboratory, Department of Life Sciences, Presidency University, Kolkata, India
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Borovkova VS, Malyar YN, Sudakova IG, Chudina AI, Skripnikov AM, Fetisova OY, Kazachenko AS, Miroshnikova AV, Zimonin DV, Ionin VA, Seliverstova AA, Samoylova ED, Issaoui N. Molecular Characteristics and Antioxidant Activity of Spruce ( Picea abies) Hemicelluloses Isolated by Catalytic Oxidative Delignification. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27010266. [PMID: 35011498 PMCID: PMC8746494 DOI: 10.3390/molecules27010266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 12/27/2021] [Accepted: 12/30/2021] [Indexed: 01/18/2023]
Abstract
Spruce (Piceaabies) wood hemicelluloses have been obtained by the noncatalytic and catalytic oxidative delignification in the acetic acid-water-hydrogen peroxide medium in a processing time of 3–4 h and temperatures of 90–100 °C. In the catalytic process, the H2SO4, MnSO4, TiO2, and (NH4)6Mo7O24 catalysts have been used. A polysaccharide yield of up to 11.7 wt% has been found. The hemicellulose composition and structure have been studied by a complex of physicochemical methods, including gas and gel permeation chromatography, Fourier-transform infrared spectroscopy, and thermogravimetric analysis. The galactose:mannose:glucose:arabinose:xylose monomeric units in a ratio of 5:3:2:1:1 have been identified in the hemicelluloses by gas chromatography. Using gel permeation chromatography, the weight average molar mass Mw of hemicelluloses has been found to attain 47,654 g/mol in noncatalytic delignification and up to 42,793 g/mol in catalytic delignification. Based on the same technique, a method for determining the α and k parameters of the Mark–Kuhn–Houwink equation for hemicelluloses has been developed; it has been established that these parameters change between 0.33–1.01 and 1.57–472.17, respectively, depending on the catalyst concentration and process temperature and time. Moreover, the FTIR spectra of the hemicellulose samples contain all the bands characteristic of heteropolysaccharides, specifically, 1069 cm−1 (C–O–C and C–O–H), 1738 cm−1 (ester C=O), 1375 cm−1 (–C–CH3), 1243 cm−1 (–C–O–), etc. It has been determined by the thermogravimetric analysis that the hemicelluloses isolated from spruce wood are resistant to heating to temperatures of up to ~100 °C and, upon further heating, start destructing at an increasing rate. The antioxidant activity of the hemicelluloses has been examined using the compounds simulating the 2,2-diphenyl-2-picrylhydrazyl free radicals.
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Affiliation(s)
- Valentina S. Borovkova
- School of Non-Ferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (V.S.B.); (A.M.S.); (A.S.K.); (A.V.M.); (D.V.Z.); (V.A.I.); (A.A.S.); (E.D.S.)
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
| | - Yuriy N. Malyar
- School of Non-Ferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (V.S.B.); (A.M.S.); (A.S.K.); (A.V.M.); (D.V.Z.); (V.A.I.); (A.A.S.); (E.D.S.)
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
- Correspondence: ; Tel.: +79-(08)-2065517
| | - Irina G. Sudakova
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
| | - Anna I. Chudina
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
| | - Andrey M. Skripnikov
- School of Non-Ferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (V.S.B.); (A.M.S.); (A.S.K.); (A.V.M.); (D.V.Z.); (V.A.I.); (A.A.S.); (E.D.S.)
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
| | - Olga Yu. Fetisova
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
| | - Alexander S. Kazachenko
- School of Non-Ferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (V.S.B.); (A.M.S.); (A.S.K.); (A.V.M.); (D.V.Z.); (V.A.I.); (A.A.S.); (E.D.S.)
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
| | - Angelina V. Miroshnikova
- School of Non-Ferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (V.S.B.); (A.M.S.); (A.S.K.); (A.V.M.); (D.V.Z.); (V.A.I.); (A.A.S.); (E.D.S.)
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
| | - Dmitriy V. Zimonin
- School of Non-Ferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (V.S.B.); (A.M.S.); (A.S.K.); (A.V.M.); (D.V.Z.); (V.A.I.); (A.A.S.); (E.D.S.)
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
| | - Vladislav A. Ionin
- School of Non-Ferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (V.S.B.); (A.M.S.); (A.S.K.); (A.V.M.); (D.V.Z.); (V.A.I.); (A.A.S.); (E.D.S.)
- Krasnoyarsk Science Center, Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/24, 660036 Krasnoyarsk, Russia; (I.G.S.); (A.I.C.); (O.Y.F.)
| | - Anastasia A. Seliverstova
- School of Non-Ferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (V.S.B.); (A.M.S.); (A.S.K.); (A.V.M.); (D.V.Z.); (V.A.I.); (A.A.S.); (E.D.S.)
| | - Ekaterina D. Samoylova
- School of Non-Ferrous Metals and Materials Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia; (V.S.B.); (A.M.S.); (A.S.K.); (A.V.M.); (D.V.Z.); (V.A.I.); (A.A.S.); (E.D.S.)
| | - Noureddine Issaoui
- Laboratory of Quantum and Statistical Physics (LR18ES18), Faculty of Sciences, University of Monastir, Monastir 5079, Tunisia;
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10
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Andrade JT, Lima WG, Barbosa CS, Gonçalves AMMN, Silva MKP, Morais FB, Palumbo JMC, Viana GHR, Ferreira JMS. Antifungal activity of a novel 3-Alkylpyridine analog derived from Marine sponge alkaloids. AN ACAD BRAS CIENC 2021; 93:e20200944. [PMID: 34817035 DOI: 10.1590/0001-3765202120200944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/05/2021] [Indexed: 11/21/2022] Open
Abstract
Candida spp. is considered an important cause of healthcare-associated infections worldwide. Currently, the emergence and spread of resistant Candida isolates are being increasingly reported, making the development of new agents urgently needed. In this study, we showed the in vitro anti-Candida activity of seven synthetic 3-alkylpyridine alkaloid analogs. Among them, alkaloid 1 presented a potent antifungal effect, which was independent of its capacity of binding with the fungal membrane ergosterol or cell wall. Analog 1 showed fungistatic and fungicidal effects against C. albicans (MIC 7.8 μg/mL and MFC 62.5 μg/mL), C. glabrata, C. krusei (MIC and MFC 31.2 μg/mL), and C. tropicalis (MIC 31.2 μg/mL and MFC 125 μg/mL). The time kill-curve study showed that compound 1 has a potent fungicidal effect in vitro, eliminating C. albicans cells. Furthermore, an in vitro synergistic effect with ketoconazole was observed for compound 1. This compound also eliminated the yeast-to-hypha transition. However, it showed high cytotoxicity against mammalian cells. Taken together, these findings support the use of compound 1 as a prototype to develop new anti-Candida agents, but molecular modifications should be done to minimize the high cytotoxicity obtained.
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Affiliation(s)
- Jéssica T Andrade
- Universidade Federal de São João Del-Rei/UFSJ, Laboratório de Microbiologia Médica, Campus Centro Oeste Dona Lindu, Av. Sebastião Gonçalves Coelho, Chanadour, 400, 35501-296 Divinópolis, MG, Brazil
| | - William G Lima
- Universidade Federal de São João Del-Rei/UFSJ, Laboratório de Microbiologia Médica, Campus Centro Oeste Dona Lindu, Av. Sebastião Gonçalves Coelho, Chanadour, 400, 35501-296 Divinópolis, MG, Brazil.,Universidade Federal de Minas Gerais, Departamento de Produtos Farmacêuticos, Faculdade de Farmácia, Avenida Presidente Antônio Carlos, 6627, 34096-830 Belo Horizonte, MG, Brazil
| | - Camila S Barbosa
- Universidade Federal de São João Del-Rei/UFSJ, Laboratório de Síntese Orgânica, Campus Centro Oeste Dona Lindu, Av. Sebastião Gonçalves Coelho, Chanadour, 400, 35501-296 Divinópolis, MG, Brazil
| | - Alessandra M M N Gonçalves
- Universidade Federal de São João Del-Rei/UFSJ, Laboratório de Síntese Orgânica, Campus Centro Oeste Dona Lindu, Av. Sebastião Gonçalves Coelho, Chanadour, 400, 35501-296 Divinópolis, MG, Brazil
| | - Mayra K P Silva
- Universidade Federal de São João Del-Rei/UFSJ, Laboratório de Microbiologia Médica, Campus Centro Oeste Dona Lindu, Av. Sebastião Gonçalves Coelho, Chanadour, 400, 35501-296 Divinópolis, MG, Brazil
| | - Fernanda B Morais
- Universidade Federal de São João Del-Rei/UFSJ, Laboratório de Microbiologia Médica, Campus Centro Oeste Dona Lindu, Av. Sebastião Gonçalves Coelho, Chanadour, 400, 35501-296 Divinópolis, MG, Brazil
| | - Juliana M C Palumbo
- Universidade Federal de São João Del-Rei/UFSJ, Laboratório de Microbiologia Médica, Campus Centro Oeste Dona Lindu, Av. Sebastião Gonçalves Coelho, Chanadour, 400, 35501-296 Divinópolis, MG, Brazil
| | - Gustavo H R Viana
- Universidade Federal de São João Del-Rei/UFSJ, Laboratório de Síntese Orgânica, Campus Centro Oeste Dona Lindu, Av. Sebastião Gonçalves Coelho, Chanadour, 400, 35501-296 Divinópolis, MG, Brazil
| | - Jaqueline M S Ferreira
- Universidade Federal de São João Del-Rei/UFSJ, Laboratório de Microbiologia Médica, Campus Centro Oeste Dona Lindu, Av. Sebastião Gonçalves Coelho, Chanadour, 400, 35501-296 Divinópolis, MG, Brazil
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11
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Ponomarenko GV, Kovalenko VL, Balatskiy YO, Ponomarenko OV, Paliy AP, Shulyak SV. Bactericidal efficiency of preparation based on essential oils used in aerosol disinfection in the presence of poultry. REGULATORY MECHANISMS IN BIOSYSTEMS 2021. [DOI: 10.15421/022187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
A disinfectant was created for aerosol disinfection of premises in the presence of poultry, which will help reduce microbial contamination of premises, increase survival, weight of poultry and economic efficiency of meat production in general. The preparation based on essential oils can be used for disinfection in the presence of poultry and at the same time exhibits a therapeutic and prophylactic effect on respiratory infections. This disinfectant has a colloidal solution of silver (Ag), benzalkonium chloride and essential oils of thyme, fir and eucalyptus. The preparation based on essential oils contains (per 100 g): benzalkonium chloride – 16.0 g; thyme oil – up to 2.0 g; eucalyptus oil – up to 2.0 g; fir oil – up to 2.0 g; colloidal solution of silver (Ag) – 20–30 mg; distilled water - up to 100 cm3. Aerosol sanitation of indoor air was carried out with 0.3% solution of preparation in the period before housing poultry and once a day from the 20th to the 35th day of growing broilers with aerosol cold mist generator Dyna-Fog Tornado (model 2897, construction type – ULV-electric spray gnerator, manufacturer – Curtis Dyna-Fog, Ltd., USA) at a dose of 50.0 cm3 per 1 m3 at an exposure of 60 minutes. The size of the aerosol particles is 20 μm. On days 1, 4, 8, 11, 15, 28, 37, and 42, the chickens were weighed, and the blood was taken for examination. Blood was examined to study the number of red blood cells, hemoglobin content, the bactericidal activity of blood serum, phagocyte activity of leukocytes, lysozyme activity of blood serum. According to the results of the research, the technological modes of air disinfection of poultry premises in the presence of broiler chickens were substantiated during the use of preparation, which contains nanoparticles (NP) of silver, benzalkonium chloride and essential oils. The optimal mode of aerosol treatment of poultry houses using a 0.3% solution preparation based on essential oils is 50 mL/m3 of a room with a 60-minute exposure. The use of air disinfection in the presence of chickens during broiler rearing and one treatment per day from 20 to 35 days of the chickens’ growth reduced the microbial pollution of indoor air. Thus, the concentration of microbial cells in the room where the chickens were kept was 230.2 ± 15.6 thousand microbial cell/m3. Sixty minutes after disinfection, the concentration decreased to 1.4 ± 0.4 thousand microbial cell/m3. In addition, the bodyweight of chickens at 6 weeks increased by 449.4 ± 16.3 g (15.9%) compared with the controls. The method and mode of air treatment did not adversely affect the development of the internal organs of the poultry and their physiological state, which is confirmed by studies of the morphological parameters of the chicken blood. The data obtained indicate a positive effect of the developed methods and modes of aerosol air treatment with the preparation based on essential oils on the growth and development of broilers.
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12
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Sun FJ, Li M, Gu L, Wang ML, Yang MH. Recent progress on anti-Candida natural products. Chin J Nat Med 2021; 19:561-579. [PMID: 34419257 DOI: 10.1016/s1875-5364(21)60057-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Indexed: 12/18/2022]
Abstract
Candida is an intractable life-threatening pathogen. Candida infection is extremely difficult to eradicate, and thus is the major cause of morbidity and mortality in immunocompromised individuals. Morevover, the rapid spread of drug-resistant fungi has led to significant decreases in the therapeutic effects of clinical drugs. New anti-Candida agents are urgently needed to solve the complicated medical problem. Natural products with intricate structures have attracted great attention of researchers who make every endeavor to discover leading compounds for antifungal agents. Their novel mechanisms and diverse modes of action expand the variety of fungistatic agents and reduce the emergence of drug resistance. In recent decades, considerable effort has been devoted to finding unique antifungal agents from nature and revealing their unusual mechanisms, which results in important progress on the development of new antifungals, such as the novel cell wall inhibitors YW3548 and SCY-078 which are being tested in clinical trials. This review will present a brief summary on the landscape of anti-Candida natural products within the last decade. We will also discuss in-depth the research progress on diverse natural fungistatic agents along with their novel mechanisms.
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Affiliation(s)
- Fu-Juan Sun
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Min Li
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Liang Gu
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Ming-Ling Wang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Ming-Hua Yang
- State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China.
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13
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Singh L, Upadhyay AK, Dixit P, Singh A, Yadav D, Chhavi A, Konar S, Srivastava RP, Pandey S, Devkota HP, Verma PC, Saxena G. A review of chemistry and pharmacology of Piperidine alkaloids of Pinus and related genera. Curr Pharm Biotechnol 2021; 23:1132-1141. [PMID: 34387162 DOI: 10.2174/1389201022666210812123815] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 06/01/2021] [Accepted: 06/28/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Pinus and other related conifers belonging to family pinaceae are most commonly used medicinal plants in Indian North-western Himalayas. Various parts of these plants including needles are source of several well known alkaloids. Of all the alkaloids, piperidine group is one of important component and hold considerable medicinal importance. METHODS The group of alkaloids was initially identified from genus Piper through which a large variety of piperidine molecules have been extracted. The planar structure of this heterocyclic nucleus enables acetamide groups to be added at various ring configurations. RESULTS In the area of drug research, the piperidine heterocycle has gained considerable interest. To produce a new therapeutic profile, the broad range of its therapeutic application paved the way for researchers to implant the nucleus from time to time in diversified pharmacophores. DISCUSSION However, biological functions of piperidine metabolites have been mostly examined on a limited scale and that most of the findings are thus preliminary. We have tried to present different clinical applications of piperidine alkaloids in this study that researchers have already attempted to demystify from time to time. CONCLUSION Given the importance of the piperidine nucleus, the study will enable the researcher to produce scaffolds of the highest therapeutic efficacy. We have also illustrated different types of piperidine, its sources in different member of family pinaceae with special emphasis on Pinus.
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Affiliation(s)
- Lav Singh
- Department of Botany, University of Lucknow, Lucknow. India
| | - Atul K Upadhyay
- Department of Environmental Science, Babasaheb Bhimrao Ambedkar University, Lucknow 226025. India
| | - Pooja Dixit
- Department of Botany, University of Lucknow, Lucknow. India
| | - Arpit Singh
- Department of Botany, University of Lucknow, Lucknow. India
| | | | - Apurv Chhavi
- Plant Diversity, Systematics and Herbarium Division, CSIR-National Botanical Research Institute, Lucknow. India
| | - Suraj Konar
- Post graduate Department of Chemistry, RD and DJ College, Munger University. India
| | | | - Shivaraman Pandey
- Plant Diversity, Systematics and Herbarium Division, CSIR-National Botanical Research Institute, Lucknow. India
| | - Hari Prasad Devkota
- Department of Instrumental Analysis, School of Pharmacy, Kumamoto University. Japan
| | - Praveen C Verma
- Plant Molecular Biology and Genetic Engineering Division, CSIR-National Botanical Research Institute, Lucknow. India
| | - Gauri Saxena
- Department of Botany, University of Lucknow Lucknow-226007, Uttar Pradesh. India
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14
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Synthesis of β-carboline fatty alcohol hybrid molecules and characterization of their biological and antioxidant activities. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103163] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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15
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Yan Y, Li X, Zhang C, Lv L, Gao B, Li M. Research Progress on Antibacterial Activities and Mechanisms of Natural Alkaloids: A Review. Antibiotics (Basel) 2021; 10:antibiotics10030318. [PMID: 33808601 PMCID: PMC8003525 DOI: 10.3390/antibiotics10030318] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 03/15/2021] [Accepted: 03/16/2021] [Indexed: 12/29/2022] Open
Abstract
Alkaloids are nitrogen-containing heterocyclic compounds typically isolated from plants. They represent one of the most important types of natural products because of their large number and structural diversity and complexity. Based on their chemical core structures, alkaloids are classified as isoquinolines, quinolines, indoles, piperidine alkaloids, etc. In-depth analyses of alkaloids have revealed their antibacterial activities. To date, due to the widespread use of antibiotics, the problem of drug-resistant bacterial infections has been gradually increasing, which severely affects the clinical efficacy of antibacterial therapies and patient safety. Therefore, significant research efforts are focused on alkaloids because they represent a potentially new type of natural antibiotic with a wide antibacterial spectrum, rare adverse reactions, and a low tendency to produce drug resistance. Their main antibacterial mechanisms include inhibition of bacterial cell wall synthesis, change in cell membrane permeability, inhibition of bacterial metabolism, and inhibition of nucleic acid and protein synthesis. This article reviews recent reports about the chemical structures and the antibacterial activities and mechanisms of alkaloids. The purpose is to solve the problem of bacterial resistance and to provide a certain theoretical basis and research ideas for the development of new antibacterial drugs.
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Affiliation(s)
- Yumei Yan
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (Y.Y.); (X.L.); (C.Z.)
| | - Xing Li
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (Y.Y.); (X.L.); (C.Z.)
| | - Chunhong Zhang
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (Y.Y.); (X.L.); (C.Z.)
- Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources Protection and Utilization, Baotou Medical College, Baotou 014040, China
- Inner Mongolia Engineering Research Center of the Planting and Development of Astragalus Membranaceus of the Geoherbs, Baotou Medical College, Baotou 014040, China
| | - Lijuan Lv
- Department of Basic Science, Tianjin Agricultural University, Tianjin 300384, China;
| | - Bing Gao
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (Y.Y.); (X.L.); (C.Z.)
- Correspondence: (B.G.); (M.L.)
| | - Minhui Li
- Department of Pharmacy, Baotou Medical College, Baotou 014040, China; (Y.Y.); (X.L.); (C.Z.)
- Inner Mongolia Key Laboratory of Characteristic Geoherbs Resources Protection and Utilization, Baotou Medical College, Baotou 014040, China
- Inner Mongolia Engineering Research Center of the Planting and Development of Astragalus Membranaceus of the Geoherbs, Baotou Medical College, Baotou 014040, China
- Pharmaceutical Laboratory, Inner Mongolia Institute of Traditional Chinese Medicine, Hohhot 010020, China
- Correspondence: (B.G.); (M.L.)
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16
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Andrade JT, Lima WG, Sousa JF, Saldanha AA, Nívea Pereira De Sá, Morais FB, Prates Silva MK, Ribeiro Viana GH, Johann S, Soares AC, Araújo LA, Antunes Fernandes SO, Cardoso VN, Siqueira Ferreira JM. Design, synthesis, and biodistribution studies of new analogues of marine alkaloids: Potent in vitro and in vivo fungicidal agents against Candida spp. Eur J Med Chem 2021; 210:113048. [PMID: 33316690 DOI: 10.1016/j.ejmech.2020.113048] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/26/2020] [Accepted: 11/23/2020] [Indexed: 12/28/2022]
Abstract
Invasive candidiasis, such as intra-abdominal candidiasis (IAC), is a significant cause of morbidity and mortality worldwide. IAC is still poorly understood, and its treatment represents a challenge for public health. In this study, we showed the in vitro anti-Candida activity of four alkaloid synthetic derivatives and their antifungal potential in a murine model of IAC. The biological effects of alkaloids were evaluated against Candida spp. through the determination of the minimum inhibitory concentration (MIC). For the alkaloids that showed antifungal activity, the fungicidal concentration, time-kill curve, synergism with azoles and polyenes, phenotypic effects, and the effect against virulence factors were also determined. The most active alkaloids were selected for in vivo assays. The compounds 6a and 6b were active against C. albicans, C. glabrata, and C. tropicalis (MIC 7.8 μg/mL) and showed promising antifungal activity against C. krusei (MIC 3.9 μg/mL). The compound 6a presented a potent fungicidal effect in vitro, eliminating the yeast C. albicans after 8 h of incubation at MIC. An important in vitro synergistic effect with ketoconazole was observed for these two alkaloids. They also induced the lysis of fungal cells by binding to the ergosterol of the membrane. Besides that, 6a and 6b were able to reduce yeast-to-hyphal transition in C. albicans, as well as inhibit the biofilm formation of this pathogen. In the in vivo assay, the compound 6a did not show acute toxicity and was mainly absorbed by the liver, spleen, and lung after a parenteral administration. Also, this analogue significantly reduced the fungal load of C. albicans on the kidney and spleen of animals with IAC. Therefore, these results showed that the compound 6a is a potent anti-Candida agent in vitro and in vivo.
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Affiliation(s)
- Jéssica Tauany Andrade
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - William Gustavo Lima
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil; Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jaqueline França Sousa
- Laboratório de Compostos Bioativos e Catalíticos, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Aline Aparecida Saldanha
- Laboratório de Farmacologia da Dor e Inflamação, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Nívea Pereira De Sá
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Fernanda Barbara Morais
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Mayra Karla Prates Silva
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Gustavo Henrique Ribeiro Viana
- Laboratório de Compostos Bioativos e Catalíticos, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Susana Johann
- Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Adriana Cristina Soares
- Laboratório de Farmacologia da Dor e Inflamação, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil
| | - Leonardo Allan Araújo
- Serviço de Recursos Vegetais e Opoterápicos (SRVO), Diretoria de Pesquisa (DPD), Fundação Ezequiel Dias (FUNED), Belo Horizonte, MG, Brazil
| | - Simone Odília Antunes Fernandes
- Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Valbert Nascimento Cardoso
- Laboratório de Radioisótopos, Departamento de Análises Clinicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jaqueline Maria Siqueira Ferreira
- Laboratório de Microbiologia Médica, Campus Universidade Federal de São João Del-Rei (UFSJ), Centro-Oeste Dona Lindu, Divinópolis, Minas Gerais, Brazil.
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17
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Srivastava V, Wani MY, Al-Bogami AS, Ahmad A. Piperidine based 1,2,3-triazolylacetamide derivatives induce cell cycle arrest and apoptotic cell death in Candida auris. J Adv Res 2020; 29:121-135. [PMID: 33842010 PMCID: PMC8020347 DOI: 10.1016/j.jare.2020.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 10/18/2020] [Accepted: 11/03/2020] [Indexed: 12/23/2022] Open
Abstract
Introduction: The fungal pathogen Candida auris, is a serious threat to public health and is associated with bloodstream infections causing high mortality particularly in patients with serious medical problems. As this pathogen is generally resistant to all the available classes of antifungals, there is a constant demand for novel antifungal drugs with new mechanisms of antifungal action. Objective: Therefore, in this study we synthesised six novel piperidine based 1,2,3-triazolylacetamide derivatives (pta1-pta6) and tested their antifungal activity and mechanism of action against clinical C. auris isolates. Methods: Antifungal susceptibility testing was done to estimate MIC values of piperidine derivatives following CLSI recommended guidelines. MUSE Cell Analyzer was used to check cell viability and cell cycle arrest in C. auris after exposure to piperidine derivatives using different kits. Additionally, fluorescence microscopy was done to check the effect of test compound on C. auris membrane integrity and related apoptotic assays were performed to confirm cellular apoptosis using different apoptosis markers. Results: Out of the six derivatives; pta1, pta2 and pta3 showed highest active with MIC values from 0.24 to 0.97 μg/mL and MFC ranging from 0.97 to 3.9 μg/mL. Fungicidal behaviour of these compounds was confirmed by cell count and viability assay. Exposure to test compounds at sub-inhibitory and inhibitory concentrations resulted in disruption of C. auris plasma membrane. Further in-depth studies showed that these derivatives were able to induce apoptosis and cell cycle arrest in S-phase. Furthermore, the compounds demonstrated lower toxicity profile. Conclusion: Present study suggests that the novel derivatives (pta1-pta3) induce apoptotic cell death and cell cycle arrest in C. auris and could be potential candidates against C. auris infections.
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Affiliation(s)
- Vartika Srivastava
- Clinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa
| | - Mohmmad Younus Wani
- University of Jeddah, College of Science, Department of Chemistry, Jeddah 21589, Saudi Arabia
| | - Abdullah Saad Al-Bogami
- University of Jeddah, College of Science, Department of Chemistry, Jeddah 21589, Saudi Arabia
| | - Aijaz Ahmad
- Clinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa.,Infection Control Unit, Charlotte Maxeke Johannesburg Academic Hospital, National Health Laboratory Service, Johannesburg 2193, South Africa
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1,6-Dehydropinidine Is an Abundant Compound in Picea abies (Pinaceae) Sprouts and 1,6-Dehydropinidine Fraction Shows Antibacterial Activity against Streptococcus equi Subsp. equi. Molecules 2020; 25:molecules25194558. [PMID: 33036142 PMCID: PMC7582581 DOI: 10.3390/molecules25194558] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/01/2020] [Accepted: 10/04/2020] [Indexed: 11/17/2022] Open
Abstract
Knowledge about the defensive chemistry of coniferous trees has increased in recent years regarding a number of alkaloid compounds; in addition to phenolics and terpenes. Here, we show that Norway spruce (Picea abies (L.) H. Karst.), an important boreal zone tree species; accumulates 1,6-dehydropinidine (2-methyl-6-(2-propenyl)-1,6-piperideine) in its needles and bark. We reanalyzed previously published GC-MS data to obtain a full picture of 1,6-dehydropinidine in P. abies. 1,6-dehydropinidine appeared to especially accumulate in developing spring shoots. We used solid-phase partitioning to collect the alkaloid fraction of the sprouts and thin-layer chromatography to purify 1,6-dehydropinidine. The antibacterial properties of the 1,6-dehydropinidine fraction were tested using a broth microdilution method; with Streptococcus equi subsp. equi as a model organism. Based on our results 1,6-dehydropinidine is common in alkaloid extractions from P. abies (0.4 ± 0.03 mg g−1 dw in mature needles) and it is especially abundant in young spruce shoots (2.7 ± 0.5 mg g−1 dw). Moreover; 1,6-dehydropinidine extracted from P. abies sprouts showed mild antibacterial potential against Streptococcus equi subsp. equi (MIC 55 µg mL−1). The antibacterial activity of a plant compound thought of as an intermediate rather than an end-product of biosynthesis calls for more detailed studies regarding the biological function of these coniferous alkaloids
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Sprouts and Needles of Norway Spruce ( Picea abies (L.) Karst.) as Nordic Specialty-Consumer Acceptance, Stability of Nutrients, and Bioactivities during Storage. Molecules 2020; 25:molecules25184187. [PMID: 32932686 PMCID: PMC7570650 DOI: 10.3390/molecules25184187] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/07/2020] [Accepted: 09/09/2020] [Indexed: 11/16/2022] Open
Abstract
Developing shoots, i.e., sprouts, and older needles of Norway spruce (Picea abies (L.) Karst.) have traditionally been used for medicinal purposes due to the high content of vitamins and antioxidants. Currently, sprouts are available as, for example, superfood and supplements. However, end-product quality and nutritive value may decline in the value-chain from raw material sourcing to processing and storage. We studied (1) impacts of different drying and extraction methods on nutritional composition and antioxidative properties of sprouts and needles, (2) differences between sprouts and needles in nutritional composition and microbiological quality, and (3) production scale quality of the sprouts. Additionally, (4) sprout powder was applied in products (ice-cream and sorbet) and consumer acceptance was evaluated. According to our results, older needles have higher content of dry matter, energy, and calcium, but lower microbial quality than sprouts. Sprouts showed a higher concentration of vitamin C, magnesium, potassium, and phosphorus than older needles. Freeze-drying was the best drying method preserving the quality of both sprouts and needles, e.g., vitamin C content. The antioxidative activity of the sprout extracts were lower than that of needles. Ethanol-water extraction resulted in a higher content of active compounds in the extract than water extraction. Sensory evaluation of food products revealed that on average, 76% of consumers considered sprout-containing products very good or good, and a creamy product was preferred over a water-based sorbet.
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Bottoni M, Milani F, Colombo L, Nallio K, Colombo PS, Giuliani C, Bruschi P, Fico G. Using Medicinal Plants in Valmalenco (Italian Alps): From Tradition to Scientific Approaches. Molecules 2020; 25:molecules25184144. [PMID: 32927742 PMCID: PMC7570945 DOI: 10.3390/molecules25184144] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 02/07/2023] Open
Abstract
This ethnobotanical survey was carried out in Caspoggio (Valmalenco, SO, Italy) with the purpose of investigating the traditional uses of medicinal plants. Moreover, a bibliographic research meant to validate or refute the uses, focusing on the potentially responsible compounds, was performed. Fifty-nine species, attributable to 30 families (Asteraceae, Pinaceae, Malvaceae, and Lamiaceae the most cited), were mentioned. Arnica montana, anti-inflammatory for traumas and musculoskeletal pains; Pinus mugo, expectorant; Malva sylvestris, anti-inflammatory and soothing; Achillea moschata, digestive. The compounds, responsible for the therapeutic activities, are often polyphenols and terpenoids: helenanin in A. montana, α-pinene, δ-3-carene, and limonene in P. mugo, gossypin and malvin in M. sylvestris, luteolin and apigenin in A. moschata. Scientific evidence for at least one of the traditional activities described was found for 50 species but only in 26 out of 196 works consulted, it is possible to make a comparison between investigated extracts and traditional preparations. This study is thus a stimulus to new phytochemical investigations, mimicking as much as possible the traditional preparations. This work is part of the European Interreg Italy-Switzerland B-ICE project, aimed at creating a management model for the ongoing climate change and searching for new sources of territory valorization as attractions for tourists.
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Affiliation(s)
- Martina Bottoni
- Department of Pharmaceutical Science, University of Milan, 20133 Milan, Italy
- Botanical Garden G.E. Ghirardi, Department of Pharmaceutical Science, University of Milan, Toscolano Maderno, 25088 Brescia, Italy
| | - Fabrizia Milani
- Department of Pharmaceutical Science, University of Milan, 20133 Milan, Italy
- Botanical Garden G.E. Ghirardi, Department of Pharmaceutical Science, University of Milan, Toscolano Maderno, 25088 Brescia, Italy
| | - Lorenzo Colombo
- Department of Pharmaceutical Science, University of Milan, 20133 Milan, Italy
- Botanical Garden G.E. Ghirardi, Department of Pharmaceutical Science, University of Milan, Toscolano Maderno, 25088 Brescia, Italy
| | - Kevin Nallio
- Department of Pharmaceutical Science, University of Milan, 20133 Milan, Italy
- Botanical Garden G.E. Ghirardi, Department of Pharmaceutical Science, University of Milan, Toscolano Maderno, 25088 Brescia, Italy
| | - Paola Sira Colombo
- Department of Pharmaceutical Science, University of Milan, 20133 Milan, Italy
- Botanical Garden G.E. Ghirardi, Department of Pharmaceutical Science, University of Milan, Toscolano Maderno, 25088 Brescia, Italy
| | - Claudia Giuliani
- Department of Pharmaceutical Science, University of Milan, 20133 Milan, Italy
- Botanical Garden G.E. Ghirardi, Department of Pharmaceutical Science, University of Milan, Toscolano Maderno, 25088 Brescia, Italy
| | - Piero Bruschi
- Department of Agricultural, Environmental, Food and Forestry Science and Technology, University of Florence, 50144 Florence, Italy
| | - Gelsomina Fico
- Department of Pharmaceutical Science, University of Milan, 20133 Milan, Italy
- Botanical Garden G.E. Ghirardi, Department of Pharmaceutical Science, University of Milan, Toscolano Maderno, 25088 Brescia, Italy
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Makarova EN, Shakhmatov EG. Structural characteristics of oxalate-soluble polysaccharides from Norway spruce (Picea abies) foliage. Carbohydr Polym 2020; 246:116544. [PMID: 32747233 DOI: 10.1016/j.carbpol.2020.116544] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/14/2020] [Accepted: 05/29/2020] [Indexed: 10/24/2022]
Abstract
Structurally different polymers were derived from Picea abies foliage by successive extraction with water (PAW), HCl solution (PAA) and (NH4)2C2O4 solution (PAO). The P. abies foliage was found to contain basically low-methoxyl pectin extractable with an (NH4)2C2O4 solution. PAW was shown to comprise primarily arabinogalactan-proteins (AGPs); PAA was composed of mixed AGPs and pectic polysaccharides, with the latter prevailing; and polysaccharide PAO isolated in the highest yield included chiefly pectic polysaccharides. The major constituents of PAO were low-methoxyl and low-acetylated 1,4-α-d-galacturonan and partially acetylated RG-I. The sugar side chains of RG-I contained chiefly highly branched 1,5-α-l-arabinan and arabinogalactan type I as a minor constituent. RG-I whose side chains had 1,5-α-l-arabinan represented short regions alternating with non-acetylated and unmethylesterified galacturonan regions. In addition to pectins, polysaccharide PAO contained AGPs, xylanes and glucomannans, indicating that these polysaccharides are in an intimate interaction.
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Affiliation(s)
- Elena N Makarova
- Institute of Chemistry, Federal Research Center "Komi Science Centre of the Ural Branch of the Russian Academy of Sciences", Pervomaiskaya St. 48, Syktyvkar, 167982, Russia.
| | - Evgeny G Shakhmatov
- Institute of Chemistry, Federal Research Center "Komi Science Centre of the Ural Branch of the Russian Academy of Sciences", Pervomaiskaya St. 48, Syktyvkar, 167982, Russia
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Arockianathan PM, Mishra M, Niranjan R. Recent Status and Advancements in the Development of Antifungal Agents: Highlights on Plant and Marine Based Antifungals. Curr Top Med Chem 2019; 19:812-830. [PMID: 30977454 DOI: 10.2174/1568026619666190412102037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 03/13/2019] [Accepted: 03/13/2019] [Indexed: 11/22/2022]
Abstract
The developing resistance in fungi has become a key challenge, which is being faced nowadays with the available antifungal agents in the market. Further search for novel compounds from different sources has been explored to meet this problem. The current review describes and highlights recent advancement in the antifungal drug aspects from plant and marine based sources. The current available antifungal agents act on specific targets on the fungal cell wall, like ergosterol synthesis, chitin biosynthesis, sphingolipid synthesis, glucan synthesis etc. We discuss some of the important anti-fungal agents like azole, polyene and allylamine classes that inhibit the ergosterol biosynthesis. Echinocandins inhibit β-1, 3 glucan synthesis in the fungal cell wall. The antifungals poloxins and nikkomycins inhibit fungal cell wall component chitin. Apart from these classes of drugs, several combinatorial therapies have been carried out to treat diseases due to fungal resistance. Recently, many antifungal agents derived from plant and marine sources showed potent activity. The renewed interest in plant and marine derived compounds for the fungal diseases created a new way to treat these resistant strains which are evident from the numerous literature publications in the recent years. Moreover, the compounds derived from both plant and marine sources showed promising results against fungal diseases. Altogether, this review article discusses the current antifungal agents and highlights the plant and marine based compounds as a potential promising antifungal agents.
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Affiliation(s)
- P Marie Arockianathan
- PG & Research Department of Biochemistry, St. Joseph's College of Arts & Science (Autonomous), Cuddalore-607001, Tamil Nadu, India
| | - Monika Mishra
- Neurobiology laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rituraj Niranjan
- Unit of Microbiology and Molecular Biology, ICMR-Vector Control Research Center, Puducherry 605006, India
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Structure of acid-extractable polysaccharides of tree greenery of Picea abies. Carbohydr Polym 2018; 199:320-330. [DOI: 10.1016/j.carbpol.2018.07.027] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 07/09/2018] [Accepted: 07/09/2018] [Indexed: 11/17/2022]
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Structural studies of water-extractable pectic polysaccharides and arabinogalactan proteins from Picea abies greenery. Carbohydr Polym 2018; 195:207-217. [DOI: 10.1016/j.carbpol.2018.04.074] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 11/21/2022]
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Phenylpropionamides, Piperidine, and Phenolic Derivatives from the Fruit of Ailanthus altissima. Molecules 2017; 22:molecules22122107. [PMID: 29207525 PMCID: PMC6149757 DOI: 10.3390/molecules22122107] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 11/21/2017] [Accepted: 11/29/2017] [Indexed: 11/17/2022] Open
Abstract
Four novel compounds—two phenylpropionamides, one piperidine, and one phenolic derivatives—were isolated and identified from the fruit of a medicinal plant, Ailanthus altissima (Mill.) Swingle (Simaroubaceae), together with one known phenylpropionamide, 13 known phenols, and 10 flavonoids. The structures of the new compounds were elucidated as 2-hydroxy-N-[(2-O-β-d-glucopyranosyl)phenyl]propionamide (1), 2-hydroxy-N-[(2-O-β-d-glucopyranosyl-(1→6)-β-d-glucopyranosyl)phenyl]propionamide (2), 2β-carboxyl-piperidine-4β-acetic acid methyl ester (4), and 4-hydroxyphenyl-1-O-[6-(hydrogen-3-hydroxy-3-methylpentanedioate)]-β-d-glucopyranoside (5) based on spectroscopic analysis. All the isolated compounds were evaluated for their inhibitory activity against Tobacco mosaic virus (TMV) using the leaf-disc method. Among the compounds isolated, arbutin (6), β-d-glucopyranosyl-(1→6)-arbutin (7), 4-methoxyphenylacetic acid (10), and corilagin (18) showed moderate inhibition against TMV with IC50 values of 0.49, 0.51, 0.27, and 0.45 mM, respectively.
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