151
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Zhou X, Xie Q, Ma C, Chen Z, Zhang G. Inhibition of Marine Biofouling by Use of Degradable and Hydrolyzable Silyl Acrylate Copolymer. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01819] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Xi Zhou
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Qingyi Xie
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Chunfeng Ma
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Zijian Chen
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Guangzhao Zhang
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China
- Hefei
National Laboratory for Physical Sciences at Microscale, Department
of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China
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152
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Shao CL, Xu RF, Wang CY, Qian PY, Wang KL, Wei MY. Potent Antifouling Marine Dihydroquinolin-2(1H)-one-Containing Alkaloids from the Gorgonian Coral-Derived Fungus Scopulariopsis sp. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2015; 17:408-415. [PMID: 25833409 DOI: 10.1007/s10126-015-9628-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 01/28/2015] [Indexed: 06/04/2023]
Abstract
Marine biofouling has a major economic impact, especially when it occurs on ship hulls or aquaculture facilities. Since the International Maritime Organization (IMO) treaty to ban the application of organotin-based paints to ships went into effect in 2008, there is an urgent demand for the development of efficient and environmentally friendly antifouling agents. Marine microorganisms have proved to be a potential source of antifouling natural compounds. In this study, six dihydroquinolin-2-one-containing alkaloids, three monoterpenoids combined with a 4-phenyl-3,4-dihydroquinolin-2(1H)-one (1-3) and three 4-phenyl-3,4-dihydroquinolin-2(1H)-one alkaloids (4-6), were isolated from the gorgonian coral-derived fungus Scopulariopsis sp. collected in the South China Sea. These dihydroquinolin-2-one-containing alkaloids were evaluated against the larval settlement of barnacle Balanus amphitrite, and antifouling activity was detected for the first time for this class of metabolites. All of them except 6 showed strong antifouling activity. Compounds 1 and 2 were discovered to be the most promising non-toxic antilarval settlement candidates. Especially, compound 1 is the strongest antifouling compound in nature until now which showed highly potent activity with picomolar level (EC50 17.5 pM) and a very safety and high therapeutic ratio (LC50/EC50 1200). This represents an effective non-toxic, anti-larval settlement structural class of promising antifouling lead compound.
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Affiliation(s)
- Chang-Lun Shao
- Key Laboratory of Marine Drugs, The Ministry Education of China, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, People's Republic of China,
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153
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Chen X, Zhang G, Zhang Q, Zhan X, Chen F. Preparation and Performance of Amphiphilic Polyurethane Copolymers with Capsaicin-Mimic and PEG Moieties for Protein Resistance and Antibacteria. Ind Eng Chem Res 2015. [DOI: 10.1021/ie505062a] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xi Chen
- College of Chemical and Biochemical
Engineering, Zhejiang University, Hangzhou 310027, China
| | - Guangfa Zhang
- College of Chemical and Biochemical
Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qinghua Zhang
- College of Chemical and Biochemical
Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiaoli Zhan
- College of Chemical and Biochemical
Engineering, Zhejiang University, Hangzhou 310027, China
| | - Fengqiu Chen
- College of Chemical and Biochemical
Engineering, Zhejiang University, Hangzhou 310027, China
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154
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Ramasubburayan R, Sumathi S, Magi Bercy D, Immanuel G, Palavesam A. Antimicrobial, antioxidant and anticancer activities of mangrove associated bacterium Bacillus subtilis subsp. subtilis RG. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2015. [DOI: 10.1016/j.bcab.2015.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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155
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Angulo-Preckler C, Cid C, Oliva F, Avila C. Antifouling activity in some benthic Antarctic invertebrates by "in situ" experiments at Deception Island, Antarctica. MARINE ENVIRONMENTAL RESEARCH 2015; 105:30-38. [PMID: 25680110 DOI: 10.1016/j.marenvres.2015.02.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 01/29/2015] [Accepted: 02/04/2015] [Indexed: 06/04/2023]
Abstract
Competition for space is a remarkable ecological force, comparable to predation, producing a strong selective pressure on benthic invertebrates. Some invertebrates, thus, possess antimicrobial compounds to reduce surface bacterial growth. Antimicrobial inhibition is the first step in avoiding being overgrown by other organisms, which may have a negative impact in feeding, respiration, reproduction … The in situ inhibition of bacterial biofilm was used here as an indicator of antifouling activity by testing hydrophilic extracts of twelve Antarctic invertebrates. Using two different approaches (genetics and confocal techniques) different levels of activity were found in the tested organisms. In fact, differences within body parts of the studied organisms were determined, in agreement with the Optimal Defense Theory. Eight out of 15 extracts tested had negative effects on fouling after 28 days submerged in Antarctic waters. Thus, although chemical defenses may be quite species-specific in their ecological roles, these results suggest that different chemical strategies exist to deal with space competition.
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Affiliation(s)
- Carlos Angulo-Preckler
- Department of Animal Biology (Invertebrates), Faculty of Biology, University of Barcelona, Diagonal, 643, 08028 Barcelona, Catalunya, Spain; Biodiversity Research Institute (IrBIO), Diagonal, 643, 08028 Barcelona, Catalunya, Spain.
| | - Cristina Cid
- Microbial Evolution Laboratory, Center of Astrobiology (CSIC-INTA), Ctra de Torrejón a Ajalvir, km 4, 28850 Torrejón de Ardoz, Madrid, Spain.
| | - Francesc Oliva
- Department of Statistic, Faculty of Biology, University of Barcelona, Diagonal, 645, 08028 Barcelona, Spain.
| | - Conxita Avila
- Department of Animal Biology (Invertebrates), Faculty of Biology, University of Barcelona, Diagonal, 643, 08028 Barcelona, Catalunya, Spain; Biodiversity Research Institute (IrBIO), Diagonal, 643, 08028 Barcelona, Catalunya, Spain.
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156
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Natural antifouling compounds: Effectiveness in preventing invertebrate settlement and adhesion. Biotechnol Adv 2015; 33:343-57. [PMID: 25749324 DOI: 10.1016/j.biotechadv.2015.01.013] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Revised: 11/17/2014] [Accepted: 01/26/2015] [Indexed: 12/13/2022]
Abstract
Biofouling represents a major economic issue regarding maritime industries and also raise important environmental concern. International legislation is restricting the use of biocidal-based antifouling (AF) coatings, and increasing efforts have been applied in the search for environmentally friendly AF agents. A wide diversity of natural AF compounds has been described for their ability to inhibit the settlement of macrofouling species. However poor information on the specific AF targets was available before the application of different molecular approaches both on invertebrate settlement strategies and bioadhesive characterization and also on the mechanistic effects of natural AF compounds. This review focuses on the relevant information about the main invertebrate macrofouler species settlement and bioadhesive mechanisms, which might help in the understanding of the reported effects, attributed to effective and non-toxic natural AF compounds towards this macrofouling species. It also aims to contribute to the elucidation of promising biotechnological strategies in the development of natural effective environmentally friendly AF paints.
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157
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Zhang Q, Liu H, Zhan X, Chen F, Yan J, Tang H. Microstructure and antibacterial performance of functionalized polyurethane based on polysiloxane tethered cationic biocides. RSC Adv 2015. [DOI: 10.1039/c5ra12945a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The designed polyurethane containing polysiloxanes tethered quaternary ammonium salt groups exhibited special surface migrations, low surface free energy and excellent antibacterial activity towardsEscherichia coli.
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Affiliation(s)
- Qinghua Zhang
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Hailong Liu
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Xiaoli Zhan
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Fengqiu Chen
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou
- China
| | - Jie Yan
- Zhejiang Feijing New Materials Technology Co., Ltd
- Zhoushan
- China
| | - Hao Tang
- Zhejiang Feijing New Materials Technology Co., Ltd
- Zhoushan
- China
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158
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Prakash S, Ramasubburayan R, Iyapparaj P, Ramaswamy Arthi AP, Ahila NK, Ramkumar VS, Immanuel G, Palavesam A. Environmentally benign antifouling potentials of triterpene-glycosides from Streptomyces fradiae: a mangrove isolate. RSC Adv 2015. [DOI: 10.1039/c4ra15335a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In the present study, an attempt has been made to screen and evaluate the antifouling potentials of the actinobacterial strainStreptomyces fradiaeRMS-MSU isolated from the manakkudy mangroves of Tamilnadu.
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Affiliation(s)
| | | | | | | | | | - Vijayan Sri Ramkumar
- Department of Environmental Biotechnology
- School of Environmental Sciences
- Bharathidasan University
- Tiruchirappalli-620 024
- India
| | - Grasian Immanuel
- Centre for Marine Science and Technology
- Manonmaniam Sundaranar University
- India
| | - Arunachalam Palavesam
- Centre for Marine Science and Technology
- Manonmaniam Sundaranar University
- India
- Department of Animal Science
- Manonmaniam Sundaranar University
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159
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Qian PY, Li Z, Xu Y, Li Y, Fusetani N. Mini-review: marine natural products and their synthetic analogs as antifouling compounds: 2009-2014. BIOFOULING 2015; 31:101-22. [PMID: 25622074 DOI: 10.1080/08927014.2014.997226] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
This review covers 214 marine natural compounds and 23 of their synthetic analogs, which were discovered and/or synthesized from mid-2009 to August 2014. The antifouling (AF) compounds reported have medium to high bioactivity (with a threshold of EC(50) < 15.0 mg ml(-1)). Among these compounds, 82 natural compounds were identified as new structures. All the compounds are marine-derived, demonstrating that marine organisms are prolific and promising sources of natural products that may be developed as environmentally friendly antifoulants. However, this mini-review excludes more than 200 compounds that were also reported as AF compounds but with rather weak bioactivity during the same period. Also excluded are terrestrial-derived AF compounds reported during the last five years. A brief discussion on current challenges in AF compound research is also provided to reflect the authors' own views in terms of future research directions.
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Affiliation(s)
- Pei-Yuan Qian
- a Division of Life Science , Hong Kong University of Science and Technology , HKSAR , PR China
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160
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Liao S, Xu Y, Tang Y, Wang J, Zhou X, Xu L, Liu Y. Design, synthesis and biological evaluation of soluble 2,5-diketopiperazines derivatives as potential antifouling agents. RSC Adv 2015. [DOI: 10.1039/c5ra06210a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Based on the natural product cyclo-(l-Phe-l-Pro), a library of environmentally friendly 2,5-diketopiperazines were designed, synthesized and showed strong antifouling activities.
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Affiliation(s)
- Shengrong Liao
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/Research Center for Marine Microbes
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou 510301
- PR China
| | - Ying Xu
- Shenzhen Key Laboratory of Marine Bioresource & Eco-environmental Science
- Shenzhen Engineering Laboratory for Marine Algal Biotechnology
- College of Life Science
- Shenzhen University
- Shenzhen 518060
| | - Yong Tang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/Research Center for Marine Microbes
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou 510301
- PR China
| | - Junfeng Wang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/Research Center for Marine Microbes
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou 510301
- PR China
| | - Xuefeng Zhou
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/Research Center for Marine Microbes
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou 510301
- PR China
| | - Liang Xu
- Enantiotech Corp., Ltd
- Zhongshan Torch Hi-Tech
- Zhongshan 528437
- PR China
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology/Guangdong Key Laboratory of Marine Materia Medica/Research Center for Marine Microbes
- South China Sea Institute of Oceanology
- Chinese Academy of Sciences
- Guangzhou 510301
- PR China
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161
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Trepos R, Cervin G, Pile C, Pavia H, Hellio C, Svenson J. Evaluation of cationic micropeptides derived from the innate immune system as inhibitors of marine biofouling. BIOFOULING 2015; 31:393-403. [PMID: 26057499 DOI: 10.1080/08927014.2015.1048238] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Accepted: 04/30/2015] [Indexed: 06/04/2023]
Abstract
A series of 13 short synthetic amphiphilic cationic micropeptides, derived from the antimicrobial iron-binding innate defence protein lactoferrin, have been evaluated for their capacity to inhibit the marine fouling process. The whole biofouling process was studied and microfouling organisms such as marine bacteria and microalgae were included as well as the macrofouling barnacle Balanus improvisus. In total 19 different marine fouling organisms (18 microfoulers and one macrofouler) were included and both the adhesion and growth of the microfoulers were investigated. It was shown that the majority of the peptides inhibited barnacle cyprid settlement via a reversible nontoxic mechanism, with IC50 values as low as 0.5 μg ml(-1). Six peptides inhibited adhesion and growth of microorganisms. Two of these were particularly active against the microfoulers with MIC-values ranging between 0.01 and 1 μg ml(-1), which is comparable with the commercial reference antifoulant SeaNine.
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Affiliation(s)
- Rozenn Trepos
- a School of Biological Sciences , University of Portsmouth , Portsmouth , UK
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162
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Territrem and butyrolactone derivatives from a marine-derived fungus Aspergillus terreus. Mar Drugs 2014; 12:6113-24. [PMID: 25522319 PMCID: PMC4278221 DOI: 10.3390/md12126113] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Revised: 11/24/2014] [Accepted: 12/08/2014] [Indexed: 12/01/2022] Open
Abstract
Seventeen lactones including eight territrem derivatives (1–8) and nine butyrolactone derivatives (9–17) were isolated from a marine-derived fungus Aspergillusterreus SCSGAF0162 under solid-state fermentation of rice. Compounds 1–3 and 9–10 were new, and their structures were elucidated by spectroscopic analysis. The acetylcholinesterase inhibitory activity and antiviral activity of compounds 1–17 were evaluated. Among them, compounds 1 and 2 showed strong inhibitory activity against acetylcholinesterase with IC50 values of 4.2 ± 0.6, 4.5 ± 0.6 nM, respectively. This is the first time it has been reported that 3, 6, 10, 12 had evident antiviral activity towards HSV-1 with IC50 values of 16.4 ± 0.6, 6.34 ± 0.4, 21.8 ± 0.8 and 28.9 ± 0.8 μg·mL−1, respectively. Antifouling bioassay tests showed that compounds 1, 11, 12, 15 had potent antifouling activity with EC50 values of 12.9 ± 0.5, 22.1 ± 0.8, 7.4 ± 0.6, 16.1 ± 0.6 μg·mL−1 toward barnacle Balanus amphitrite larvae, respectively.
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163
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Hanssen KO, Cervin G, Trepos R, Petitbois J, Haug T, Hansen E, Andersen JH, Pavia H, Hellio C, Svenson J. The bromotyrosine derivative ianthelline isolated from the arctic marine sponge Stryphnus fortis inhibits marine micro- and macrobiofouling. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2014; 16:684-694. [PMID: 25051957 DOI: 10.1007/s10126-014-9583-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 06/05/2014] [Indexed: 06/03/2023]
Abstract
The inhibition of marine biofouling by the bromotyrosine derivative ianthelline, isolated from the Arctic marine sponge Stryphnus fortis, is described. All major stages of the fouling process are investigated. The effect of ianthelline on adhesion and growth of marine bacteria and microalgae is tested to investigate its influence on the initial microfouling process comparing with the known marine antifoulant barettin as a reference. Macrofouling is studied via barnacle (Balanus improvisus) settlement assays and blue mussel (Mytilus edulis) phenoloxidase inhibition. Ianthelline is shown to inhibit both marine micro- and macrofoulers with a pronounced effect on marine bacteria (minimum inhibitory concentration (MIC) values 0.1-10 μg/mL) and barnacle larval settlement (IC50 = 3.0 μg/mL). Moderate effects are recorded on M. edulis (IC50 = 45.2 μg/mL) and microalgae, where growth is more affected than surface adhesion. The effect of ianthelline is also investigated against human pathogenic bacteria. Ianthelline displayed low micromolar MIC values against several bacterial strains, both Gram positive and Gram negative, down to 2.5 μg/mL. In summary, the effect of ianthelline on 20 different representative marine antifouling organisms and seven human pathogenic bacterial strains is presented.
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Affiliation(s)
- Kine O Hanssen
- Centre for Research-based Innovation on Marine Bioactivities and Drug Discovery (MabCent), UiT The Arctic University of Norway, Breivika, Tromsø, Norway
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164
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Inhibition of bacterial quorum sensing by extracts from aquatic fungi: first report from marine endophytes. Mar Drugs 2014; 12:5503-26. [PMID: 25415350 PMCID: PMC4245542 DOI: 10.3390/md12115503] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 11/07/2014] [Accepted: 11/07/2014] [Indexed: 11/17/2022] Open
Abstract
In our search for quorum-sensing (QS) disrupting molecules, 75 fungal isolates were recovered from reef organisms (endophytes), saline lakes and mangrove rhizosphere. Their QS inhibitory activity was evaluated in Chromobacterium violaceum CVO26. Four strains of endophytic fungi stood out for their potent activity at concentrations from 500 to 50 μg mL−1. The molecular characterization, based on the internal transcribed spacer (ITS) region sequences (ITS1, 5.8S and ITS2) between the rRNA of 18S and 28S, identified these strains as belonging to four genera: Sarocladium (LAEE06), Fusarium (LAEE13), Epicoccum (LAEE14), and Khuskia (LAEE21). Interestingly, three came from coral species and two of them came from the same organism, the coral Diploria strigosa. Metabolic profiles obtained by Liquid Chromatography-High Resolution Mass Spectrometry (LC-HRMS) suggest that a combination of fungal secondary metabolites and fatty acids could be the responsible for the observed activities. The LC-HRMS analysis also revealed the presence of potentially new secondary metabolites. This is, to the best of our knowledge, the first report of QS inhibition by marine endophytic fungi.
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165
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Yang C, Yu Y, Sun W, Xia C. Indole derivatives inhibited the formation of bacterial biofilm and modulated Ca2+ efflux in diatom. MARINE POLLUTION BULLETIN 2014; 88:62-69. [PMID: 25287229 DOI: 10.1016/j.marpolbul.2014.09.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 09/12/2014] [Accepted: 09/17/2014] [Indexed: 06/03/2023]
Abstract
Marine biofouling is a serious environmental problem worldwide. As an effort to find environmental friendly antifoulants, indole derivatives were determined for their activities to inhibit the growth of bacteria and diatom. The minimum inhibitory concentrations (MICs) of indole derivatives against bacteria were very low, especially for 6-chloroindole. It was proved that 6-chloroindole obviously inhibited the growth of bacteria, interfered with the formation of bacterial biofilm, destroyed bacterial cell morphology and also inhibited the growth of diatom Cylindrotheca sp. as well. By using noninvasive micro-test technique (NMT), 6-chloroindole triggered algal cellular Ca(2+) efflux. The highest value was 72.03 pmol cm(-2)s(-1), 10.6 times of the control group. The present studies indicated that indole derivatives might have the potential to be new antifouling agents because of their excellent antibacterial and anti-algal activities. At the same time, Ca(2+) efflux might be one of the mechanisms that indole derivatives inhibited the growth of diatom.
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Affiliation(s)
- Cuiyun Yang
- Key Laboratory of Coastal Biology and Biological Research Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
| | - Yanan Yu
- School of Ocean, Yantai University, Yantai 264005, China
| | - Wenjun Sun
- School of Ocean, Yantai University, Yantai 264005, China
| | - Chuanhai Xia
- Key Laboratory of Coastal Biology and Biological Research Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
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166
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Chen M, Shao CL, Wang KL, Xu Y, She ZG, Wang CY. Dihydroisocoumarin derivatives with antifouling activities from a gorgonian-derived Eurotium sp. fungus. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.055] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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167
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Trepos R, Cervin G, Hellio C, Pavia H, Stensen W, Stensvåg K, Svendsen JS, Haug T, Svenson J. Antifouling compounds from the sub-arctic ascidian Synoicum pulmonaria: synoxazolidinones A and C, pulmonarins A and B, and synthetic analogues. JOURNAL OF NATURAL PRODUCTS 2014; 77:2105-2113. [PMID: 25181423 DOI: 10.1021/np5005032] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The current study describes the antifouling properties of four members belonging to the recently discovered synoxazolidinone and pulmonarin families, isolated from the sub-Arctic sessile ascidian Synoicum pulmonaria collected off the Norwegian coast. Four simplified synthetic analogues were also prepared and included in the study. Several of the studied compounds displayed MIC values in the micro-nanomolar range against 16 relevant marine species involved in both the micro- and macrofouling process. Settlement studies on Balanus improvisus cyprids indicated a deterrent effect and a low toxicity for selected compounds. The two synoxazolidinones displayed broad activity and are shown to be among the most active natural antifouling bromotyrosine derivatives described. Synoxazolidinone C displayed selected antifouling properties comparable to the commercial antifouling product Sea-Nine-211. The pulmonarins prevented the growth of several bacterial strains at nanomolar concentrations but displayed a lower activity toward microalgae and no effect on barnacles. The linear and cyclic synthetic peptidic mimics also displayed potent antifouling activities mainly directed against bacterial adhesion and growth.
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Affiliation(s)
- Rozenn Trepos
- School of Biological Sciences, University of Portsmouth , Portsmouth PO1 2DY, U.K
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168
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Fletcher MH, Jennings MC, Wuest WM. Draining the moat: disrupting bacterial biofilms with natural products. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.055] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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169
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Abdolahi A, Hamzah E, Ibrahim Z, Hashim S. Application of Environmentally-Friendly Coatings Toward Inhibiting the Microbially Influenced Corrosion (MIC) of Steel: A Review. POLYM REV 2014. [DOI: 10.1080/15583724.2014.946188] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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170
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Sambanthamoorthy K, Feng X, Patel R, Patel S, Paranavitana C. Antimicrobial and antibiofilm potential of biosurfactants isolated from lactobacilli against multi-drug-resistant pathogens. BMC Microbiol 2014; 14:197. [PMID: 25124936 PMCID: PMC4236506 DOI: 10.1186/1471-2180-14-197] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 06/27/2014] [Indexed: 11/29/2022] Open
Abstract
Background Biosurfactants (BS) are amphiphilic compounds produced by microbes, either on the cell surface or secreted extracellularly. BS exhibit strong antimicrobial and anti-adhesive properties, making them good candidates for applications used to combat infections. In this study, our goal was to assess the in vitro antimicrobial, anti-adhesive and anti-biofilm abilities of BS produced by Lactobacillus jensenii and Lactobacillus rhamnosus against clinical Multidrug Resistant (MDR) strains of Acinetobacter baumannii, Escherichia coli, and Staphylococcus aureus (MRSA). Cell-bound BS from both L. jensenii and L. rhamnosus were extracted and isolated. The surface activities of crude BS samples were evaluated using an oil spreading assay. The antimicrobial, anti-adhesive and anti-biofilm activities of both BS against the above mentioned MDR pathogens were determined. Results Surface activities for both BS ranged from 6.25 to 25 mg/ml with clear zones observed between 7 and 11 cm. BS of both L. jensenii and L. rhamnosus showed antimicrobial activities against A. baumannii, E. coli and S. aureus at 25-50 mg/ml. Anti-adhesive and anti-biofilm activities were also observed for the aforementioned pathogens between 25 and 50 mg/ml. Finally, analysis by electron microscope indicated that the BS caused membrane damage for A. baumannii and pronounced cell wall damage in S. aureus. Conclusion Our results indicate that BS isolated from two Lactobacilli strains has antibacterial properties against MDR strains of A. baumannii, E. coli and MRSA. Both BS also displayed anti-adhesive and anti-biofilm abilities against A. baumannii, E. coli and S. aureus. Together, these capabilities may open up possibilities for BS as an alternative therapeutic approach for the prevention and/or treatment of hospital-acquired infections.
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171
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Antifouling potential of the marine microalga Dunaliella salina. World J Microbiol Biotechnol 2014; 30:2899-905. [PMID: 25096202 DOI: 10.1007/s11274-014-1717-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Accepted: 07/31/2014] [Indexed: 10/24/2022]
Abstract
Marine organisms have usually been viewed as sources of environmentally friendly compounds with antifouling activity. We performed a series of operations to investigate the antifouling potential of the marine microalga Dunaliella salina. For the ethyl acetate crude extract, the antialgal activity was significant, and the EC50 value against Skeletonema costatum was 58.9 μg ml(-1). The isolated purified extract was tested for antifouling activity, the EC 50 value against S. costatum was 21.2 μg ml(-1), and the LC50 against Balanus amphitrite larvae was 18.8 μg ml(-1). Subsequently, both UHR-TOF-MS and GC-MS were used for the structural elucidation of the compounds, and a series of unsaturated and saturated 16- and 18-carbon fatty acids were detected. The data suggested that the fatty acid extracts from D. salina possess high antifouling activity, and could be used as substitutes for potent, toxic antifouling compounds.
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172
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Ma J, Ma C, Yang Y, Xu W, Zhang G. Biodegradable Polyurethane Carrying Antifoulants for Inhibition of Marine Biofouling. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502147t] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jielin Ma
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Chunfeng Ma
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Yun Yang
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Wentao Xu
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
| | - Guangzhao Zhang
- Faculty
of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People’s Republic of China
- Hefei
National Laboratory for Physical Sciences at Microscale, Department
of Chemical Physics, University of Science and Technology of China, Hefei 230026, People’s Republic of China
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173
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Yao J, Chen S, Ma C, Zhang G. Marine anti-biofouling system with poly(ε-caprolactone)/clay composite as carrier of organic antifoulant. J Mater Chem B 2014; 2:5100-5106. [DOI: 10.1039/c4tb00545g] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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174
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Leal MC, Sheridan C, Osinga R, Dionísio G, Rocha RJM, Silva B, Rosa R, Calado R. Marine microorganism-invertebrate assemblages: perspectives to solve the "supply problem" in the initial steps of drug discovery. Mar Drugs 2014; 12:3929-52. [PMID: 24983638 PMCID: PMC4113807 DOI: 10.3390/md12073929] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 04/04/2014] [Accepted: 06/06/2014] [Indexed: 01/11/2023] Open
Abstract
The chemical diversity associated with marine natural products (MNP) is unanimously acknowledged as the "blue gold" in the urgent quest for new drugs. Consequently, a significant increase in the discovery of MNP published in the literature has been observed in the past decades, particularly from marine invertebrates. However, it remains unclear whether target metabolites originate from the marine invertebrates themselves or from their microbial symbionts. This issue underlines critical challenges associated with the lack of biomass required to supply the early stages of the drug discovery pipeline. The present review discusses potential solutions for such challenges, with particular emphasis on innovative approaches to culture invertebrate holobionts (microorganism-invertebrate assemblages) through in toto aquaculture, together with methods for the discovery and initial production of bioactive compounds from these microbial symbionts.
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Affiliation(s)
- Miguel Costa Leal
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal.
| | - Christopher Sheridan
- Biology of Marine Organisms and Biomimetics Laboratory, Research Institute for Biosciences, University of Mons, Pentagone 2B, 6 Avenue du Champ de Mars, Mons 7000, Belgium.
| | - Ronald Osinga
- Department of Aquaculture and Fisheries, Wageningen University, P.O. Box 338, 6700 AH Wageningen, The Netherlands.
| | - Gisela Dionísio
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal.
| | - Rui Jorge Miranda Rocha
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal.
| | - Bruna Silva
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal.
| | - Rui Rosa
- Laboratório Marítimo da Guia, Centro de Oceanografia, Faculdade de Ciências da Universidade de Lisboa, Av. Nossa Senhora do Cabo, 939, Cascais 2750-374, Portugal.
| | - Ricardo Calado
- Departamento de Biologia & CESAM, Universidade de Aveiro, Campus Universitário de Santiago, Aveiro 3810-193, Portugal.
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175
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Wang J, Shi T, Yang X, Han W, Zhou Y. Environmental risk assessment on capsaicin used as active substance for antifouling system on ships. CHEMOSPHERE 2014; 104:85-90. [PMID: 24268346 DOI: 10.1016/j.chemosphere.2013.10.061] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 10/14/2013] [Accepted: 10/16/2013] [Indexed: 06/02/2023]
Abstract
Biodegradation experiments were carried out with capsaicin to evaluate its degradability. The results show that capsaicin was readily biodegradable under aerobic conditions. The values of Kow and the calculated bioconcentration factor indicate that capsaicin have a low potential for bioconcentration. The fish acute toxicity tests conducted with Brachydanio rerio show LC50 for capsaicin was 5.98 mg L(-1). The tests of alga growth inhibition conducted with Selenastrum capricornutum suggest EC50 for capsaicin was 114 mg L(-1). The calculated PNEC (Predicted No Effect Concentration) was 4.9×10(-4) mg L(-1). The average PEC (Predicted Environmental Concentration) for OECD-EU commercial harbor and marina were 3.99×10(-6) and 2.49×10(-5) mg L(-1), respectively. These indicate that the PEC was much less than the PNEC for capsaicin. The low Kp value of capsaicin suggests the data about the risk of capsaicin to sediment organisms can be waived. According to the results from the analysis of the degradation, bioaccumulation, toxicity and accumulation in sediment, it can be concluded that capsaicin used as active substance for antifouling system on ships poses relatively low risk to marine environment.
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Affiliation(s)
- Jianbing Wang
- School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China.
| | - Ting Shi
- School of Chemical and Environmental Engineering, Beijing Campus, China University of Mining and Technology, Beijing 100083, China.
| | - Xiaoling Yang
- Chinese Ecological Civilization Research and Promotion Association, Beijing 100035, China; Foreign Economic Cooperation Office China State Environmental Protection Administration, Beijing 100035, China.
| | - Wenya Han
- Chinese Ecological Civilization Research and Promotion Association, Beijing 100035, China; Foreign Economic Cooperation Office China State Environmental Protection Administration, Beijing 100035, China.
| | - Yunrui Zhou
- Foreign Economic Cooperation Office China State Environmental Protection Administration, Beijing 100035, China.
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176
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Majik MS, Rodrigues C, Mascarenhas S, D'Souza L. Design and synthesis of marine natural product-based 1H-indole-2,3-dione scaffold as a new antifouling/antibacterial agent against fouling bacteria. Bioorg Chem 2014; 54:89-95. [PMID: 24875126 DOI: 10.1016/j.bioorg.2014.05.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/30/2014] [Accepted: 05/02/2014] [Indexed: 11/16/2022]
Abstract
Marine organisms such as seaweeds, sponges and corals protect their own surfaces from fouling by their high anesthetic, repellant, and settlement inhibition properties. Within the marine ecosystem, evolution has allowed for the development of certain antifouling properties. Isatin is a biologically active chemical produced by an Alteromonas sp. strain inhibiting the surface of embryos of the cardiean shrimp Palaemon macrodectylus, which protect them from the pathogenic fungus Lagenidium callinectes. In present study, an antibacterial activity of isatin and its synthetic analogues were evaluated against different fouling bacteria in order to explore the structure activity relationships for the first time. The synthesized compounds along with parent isatin were tested against different ecologically relevant marine microorganisms by using the Kirby-Bauer disc diffusion method. Few synthetically modified isatin exhibited potent inhibitory activity at concentration of 2 μg/disc against Planococcus donghaensis, Erythrobacter litoralis, Alivibrio salmonicida, Vibrio furnisii. Overall, the modified analogues showed stronger activity than the parent marine natural product (isatin) and hence 1H-indole-2,3-dione scaffold has immense potential as future antibacterial/antifouling candidate.
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Affiliation(s)
- Mahesh S Majik
- Bio-Organic Chemistry Laboratory, CSIR-National Institute of Oceanography, Dona-Paula Goa 403 004, India.
| | - Cheryl Rodrigues
- Bio-Organic Chemistry Laboratory, CSIR-National Institute of Oceanography, Dona-Paula Goa 403 004, India
| | - Stacey Mascarenhas
- Bio-Organic Chemistry Laboratory, CSIR-National Institute of Oceanography, Dona-Paula Goa 403 004, India
| | - Lisette D'Souza
- Bio-Organic Chemistry Laboratory, CSIR-National Institute of Oceanography, Dona-Paula Goa 403 004, India
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177
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Iyapparaj P, Revathi P, Ramasubburayan R, Prakash S, Palavesam A, Immanuel G, Anantharaman P, Sautreau A, Hellio C. Antifouling and toxic properties of the bioactive metabolites from the seagrasses Syringodium isoetifolium and Cymodocea serrulata. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 103:54-60. [PMID: 24576890 DOI: 10.1016/j.ecoenv.2014.02.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 02/06/2014] [Accepted: 02/07/2014] [Indexed: 06/03/2023]
Abstract
The present study documents the antifouling and toxic properties of seagrasses Syringodium isoetifolium and Cymodocea serrulata. For that, the seagrasses S. isoetifolium and C. serrulata were extracted individually using organic solvents viz. dichloromethane, acetone and methanol. Amongst the extracts, the maximum antimicrofouling and antimacrofouling activities were exhibited by methanol extracts of both the seagrasses. The Minimal Inhibitory Concentration (MIC) of methanolic extracts of seagrasses was ranged from 1.0 to 10µg/ml against test biofilm bacteria and microalgal strains. Similarly, 100% fouling inhibition of limpet Patella vulgata was found at 6.0mg/ml of methanolic extracts of seagrasses. The mussel Perna indica showed 50% of byssal production and attachment inhibition at 21.51±2.03, 17.82±1.07µg/ml and the anticrustaecean activity for 50% mortality of Artemia salina was recorded at 732.14±9.21 and 394.16±5.16µg/ml respectively for methanolic extracts of S. isoetifolium and C. serrulata. The minimal inhibitory and higher lethal concentrations of active methanol extracts shows it׳s less toxic nature. Based on the prolific results, methanol extracts of S. isoetifolium and C. serrulata were subjected to purification using silica gel column and thin layer chromatography. Then the active compounds of the bioassay guided fractions were partially characterized using gas chromatography coupled with mass spectroscopy (GC-MS) and keyed out that fatty acids (C16 to C24) were the major components which responsible for the antifouling properties of the candidate seagrasses.
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Affiliation(s)
- Palanisamy Iyapparaj
- CAS in Marine Biology, Annamalai University, Parangipettai 608502, Tamilnadu, India.
| | - Peranandam Revathi
- Department of Environmental Biotechnology, Bharathidasan University, Trichy, Tamilnadu, India
| | | | - Santhiyagu Prakash
- Research Institute, SRM University, Kattankulathur 603203, Tamilnadu, India
| | | | - Grasian Immanuel
- CMST, Manonmaniam Sundaranar University, Rajakkamangalam 629502, Tamilnadu, India
| | - Perumal Anantharaman
- CAS in Marine Biology, Annamalai University, Parangipettai 608502, Tamilnadu, India
| | - Asmita Sautreau
- School of Biological Sciences, University of Portsmouth, Portsmouth PO1 2DY, UK
| | - Claire Hellio
- School of Pharmacy and Biomedical Sciences, University of Portsmouth, Portsmouth PO1 2DT, UK
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178
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Liu QA, Shao CL, Gu YC, Blum M, Gan LS, Wang KL, Chen M, Wang CY. Antifouling and Fungicidal Resorcylic Acid Lactones from the Sea Anemone-Derived Fungus Cochliobolus lunatus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:3183-3191. [PMID: 24635109 DOI: 10.1021/jf500248z] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Three new 14-membered resorcylic acid lactones, cochliomycins D-F, 1-3, and eight known analogues, 4-11, were isolated from the sea anemone-derived fungus Cochliobolus lunatus. Compounds 1-4 are diastereomers differing from each other by the absolute configurations of the 4',5'-diol chiral centers. The absolute configurations of 1-4 were established by the CD exciton chirality method and TDDFT ECD calculations. In antifouling assays, 1, 3-6, and 6a exhibited potent antifouling activities against the larval settlement of the barnacle Balanus amphitrite at nontoxic concentrations, with EC50 values ranging from 1.82 to 22.5 μg/mL. Noticeably, fungicide whole-plant assays indicated that 6 showed excellent activity on the Plasmopara viticola preventative test at 6 ppm and concentration-dependent activity on the Phytophthora infestans preventative application at 200, 60, and 20 ppm. Preliminary structure-activity relationships are also discussed.
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Affiliation(s)
- Qing-Ai Liu
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Chang-Lun Shao
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Yu-Cheng Gu
- Jealott's Hill International Research Centre, Syngenta , Bracknell, Berkshire, RG42 6EY, United Kingdom
| | - Mathias Blum
- Jealott's Hill International Research Centre, Syngenta , Bracknell, Berkshire, RG42 6EY, United Kingdom
| | - Li-She Gan
- Institute of Modern Chinese Medicine, College of Pharmaceutical Sciences, Zhejiang University , Hangzhou 310058, People's Republic of China
| | - Kai-Ling Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Min Chen
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
| | - Chang-Yun Wang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China , Qingdao 266003, People's Republic of China
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179
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Antifouling activity of synthetic alkylpyridinium polymers using the barnacle model. Mar Drugs 2014; 12:1959-76. [PMID: 24699112 PMCID: PMC4012450 DOI: 10.3390/md12041959] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 02/26/2014] [Accepted: 02/26/2014] [Indexed: 01/11/2023] Open
Abstract
Polymeric alkylpyridinium salts (poly-APS) isolated from the Mediterranean marine sponge, Haliclona (Rhizoniera) sarai, effectively inhibit barnacle larva settlement and natural marine biofilm formation through a non-toxic and reversible mechanism. Potential use of poly-APS-like compounds as antifouling agents led to the chemical synthesis of monomeric and oligomeric 3-alkylpyridinium analogues. However, these are less efficient in settlement assays and have greater toxicity than the natural polymers. Recently, a new chemical synthesis method enabled the production of poly-APS analogues with antibacterial, antifungal and anti-acetylcholinesterase activities. The present study examines the antifouling properties and toxicity of six of these synthetic poly-APS using the barnacle (Amphibalanus amphitrite) as a model (cyprids and II stage nauplii larvae) in settlement, acute and sub-acute toxicity assays. Two compounds, APS8 and APS12-3, show antifouling effects very similar to natural poly-APS, with an anti-settlement effective concentration that inhibits 50% of the cyprid population settlement (EC₅₀) after 24 h of 0.32 mg/L and 0.89 mg/L, respectively. The toxicity of APS8 is negligible, while APS12-3 is three-fold more toxic (24-h LC₅₀: nauplii, 11.60 mg/L; cyprids, 61.13 mg/L) than natural poly-APS. This toxicity of APS12-3 towards nauplii is, however, 60-fold and 1200-fold lower than that of the common co-biocides, Zn- and Cu-pyrithione, respectively. Additionally, exposure to APS12-3 for 24 and 48 h inhibits the naupliar swimming ability with respective IC₅₀ of 4.83 and 1.86 mg/L.
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180
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Zhang XY, Xu XY, Peng J, Ma CF, Nong XH, Bao J, Zhang GZ, Qi SH. Antifouling potentials of eight deep-sea-derived fungi from the South China Sea. ACTA ACUST UNITED AC 2014; 41:741-8. [PMID: 24532297 DOI: 10.1007/s10295-014-1412-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 01/24/2014] [Indexed: 10/25/2022]
Abstract
Abstract
Marine-derived microbial secondary metabolites are promising potential sources of nontoxic antifouling agents. The search for environmentally friendly and low-toxic antifouling components guided us to investigate the antifouling potentials of eight novel fungal isolates from deep-sea sediments of the South China Sea. Sixteen crude ethyl acetate extracts of the eight fungal isolates showed distinct antibacterial activity against three marine bacteria (Loktanella hongkongensis UST950701–009, Micrococcus luteus UST950701–006 and Pseudoalteromonas piscida UST010620–005), or significant antilarval activity against larval settlement of bryozoan Bugula neritina. Furthermore, the extract of Aspergillus westerdijkiae DFFSCS013 displayed strong antifouling activity in a field trial lasting 4 months. By further bioassay-guided isolation, five antifouling alkaloids including brevianamide F, circumdatin F and L, notoamide C, and 5-chlorosclerotiamide were isolated from the extract of A. westerdijkiae DFFSCS013. This is the first report about the antifouling potentials of metabolites of the deep-sea-derived fungi from the South China Sea, and the first stage towards the development of non- or low-toxic antifouling agents from deep-sea-derived fungi.
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Affiliation(s)
- Xiao-Yong Zhang
- grid.9227.e 0000000119573309 Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Material Medical, South China Sea Institute of Oceanology Chinese Academy of Sciences 164 West Xingang Road 510301 Guangzhou China
| | - Xin-Ya Xu
- grid.9227.e 0000000119573309 Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Material Medical, South China Sea Institute of Oceanology Chinese Academy of Sciences 164 West Xingang Road 510301 Guangzhou China
| | - Jiang Peng
- grid.9227.e 0000000119573309 Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Material Medical, South China Sea Institute of Oceanology Chinese Academy of Sciences 164 West Xingang Road 510301 Guangzhou China
| | - Chun-Feng Ma
- grid.79703.3a 0000000417643838 Faculty of Materials Science and Engineering South China University of Technology 510640 Guangzhou China
| | - Xu-Hua Nong
- grid.9227.e 0000000119573309 Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Material Medical, South China Sea Institute of Oceanology Chinese Academy of Sciences 164 West Xingang Road 510301 Guangzhou China
| | - Jie Bao
- grid.9227.e 0000000119573309 Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Material Medical, South China Sea Institute of Oceanology Chinese Academy of Sciences 164 West Xingang Road 510301 Guangzhou China
| | - Guang-Zhao Zhang
- grid.79703.3a 0000000417643838 Faculty of Materials Science and Engineering South China University of Technology 510640 Guangzhou China
| | - Shu-Hua Qi
- grid.9227.e 0000000119573309 Key Laboratory of Tropical Marine Bio-resources and Ecology, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Material Medical, South China Sea Institute of Oceanology Chinese Academy of Sciences 164 West Xingang Road 510301 Guangzhou China
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181
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Huang XZ, Xu Y, Zhang YF, Zhang Y, Wong YH, Han Z, Yin Y, Qian PY. Nontoxic piperamides and their synthetic analogues as novel antifouling reagents. BIOFOULING 2014; 30:473-481. [PMID: 24666035 DOI: 10.1080/08927014.2014.889688] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Bioassay-guided isolation of an acetone extract from a terrestrial plant Piper betle produced four known piperamides with potent antifouling (AF) activities, as evidenced by inhibition of settlement of barnacle cypris larvae. The AF activities of the four piperamides and 15 synthesized analogues were compared and their structure-activity relationships were probed. Among the compounds, piperoleine B and 1-[1-oxo-7-(3',4'-methylenedioxyphenyl)-6E-heptenyl]-piperidine (MPHP) showed strong activity against settlement of cyprids of the barnacle Balanus amphitrite, having EC50 values of 1.1 ± 0.3 and 0.5 ± 0.2 μg ml(-1), respectively. No toxicity against zebra fish was observed following incubation with these two compounds. Besides being non-toxic, 91% of piperoleine B-treated cyprids and 84% of MPHP-treated cyprids at a concentration of 100 μM completed normal metamorphosis in recovery bioassays, indicating that the anti-settlement effect of these two compounds was reversible. Hydrolysis and photolysis experiments indicated that MPHP could be decomposed in the marine environment. It is concluded that piperamides are promising compounds for use in marine AF coatings.
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Affiliation(s)
- Xiang-Zhong Huang
- a Division of Life Science , The Hong Kong University of Science and Technology , Hong Kong SAR , China
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182
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Kong NN, Fang ST, Liu Y, Wang JH, Yang CY, Xia CH. Flavonoids from the halophyteApocynum venetumand their antifouling activities against marine biofilm-derived bacteria. Nat Prod Res 2014; 28:928-31. [DOI: 10.1080/14786419.2014.886205] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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183
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Borges A, Serra S, Cristina Abreu A, Saavedra MJ, Salgado A, Simões M. Evaluation of the effects of selected phytochemicals on quorum sensing inhibition and in vitro cytotoxicity. BIOFOULING 2014; 30:183-95. [PMID: 24344870 DOI: 10.1080/08927014.2013.852542] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Quorum sensing (QS) is an important regulatory mechanism in biofilm formation and differentiation. Interference with QS can affect biofilm development and antimicrobial susceptibility. This study evaluates the potential of selected phytochemical products to inhibit QS. Three isothiocyanates (allylisothiocyanate - AITC, benzylisothiocyanate - BITC and 2-phenylethylisothiocyanate - PEITC) and six phenolic products (gallic acid - GA, ferulic acid - FA, caffeic acid - CA, phloridzin - PHL, (-) epicatechin - EPI and oleuropein glucoside - OG) were tested. A disc diffusion assay based on pigment inhibition in Chromobacterium violaceum CV12472 was performed. In addition, the mechanisms of QS inhibition (QSI) based on the modulation of N-acyl homoserine lactone (AHLs) activity and synthesis by the phytochemicals were investigated. The cytotoxicity of each product was tested on a cell line of mouse lung fibroblasts. AITC, BITC and PEITC demonstrated a capacity for QSI by modulation of AHL activity and synthesis, interfering the with QS systems of C. violaceum CviI/CviR homologs of LuxI/LuxR systems. The cytotoxic assays demonstrated low effects on the metabolic viability of the fibroblast cell line only for FA, PHL and EPI.
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Affiliation(s)
- Anabela Borges
- a LEPABE, Faculty of Engineering, Department of Chemical Engineering , University of Porto , Porto , Portugal
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184
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Garg N, Manchanda G, Kumar A. Bacterial quorum sensing: circuits and applications. Antonie Van Leeuwenhoek 2013; 105:289-305. [DOI: 10.1007/s10482-013-0082-3] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2013] [Accepted: 11/16/2013] [Indexed: 11/28/2022]
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185
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Antidiatom activity of marine bacteria associated with sponges from San Juan Island, Washington. World J Microbiol Biotechnol 2013; 30:1325-34. [DOI: 10.1007/s11274-013-1557-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 11/09/2013] [Indexed: 11/25/2022]
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186
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Salta M, Wharton JA, Dennington SP, Stoodley P, Stokes KR. Anti-biofilm performance of three natural products against initial bacterial attachment. Int J Mol Sci 2013; 14:21757-80. [PMID: 24192819 PMCID: PMC3856033 DOI: 10.3390/ijms141121757] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 10/13/2013] [Accepted: 10/15/2013] [Indexed: 01/15/2023] Open
Abstract
Marine bacteria contribute significantly towards the fouling consortium, both directly (modern foul release coatings fail to prevent "slime" attachment) and indirectly (biofilms often excrete chemical cues that attract macrofouling settlement). This study assessed the natural product anti-biofilm performance of an extract of the seaweed, Chondrus crispus, and two isolated compounds from terrestrial sources, (+)-usnic acid and juglone, against two marine biofilm forming bacteria, Cobetia marina and Marinobacter hydrocarbonoclasticus. Bioassays were developed using quantitative imaging and fluorescent labelling to test the natural products over a range of concentrations against initial bacterial attachment. All natural products affected bacterial attachment; however, juglone demonstrated the best anti-biofilm performance against both bacterial species at a concentration range between 5-20 ppm. In addition, for the first time, a dose-dependent inhibition (hormetic) response was observed for natural products against marine biofilm forming bacteria.
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Affiliation(s)
- Maria Salta
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +44-0-2380-593761; Fax: +44-0-2380-5930161
| | - Julian A. Wharton
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
| | - Simon P. Dennington
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
| | - Paul Stoodley
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
| | - Keith R. Stokes
- National Centre for Advanced Tribology at Southampton (nCATS), Engineering Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, UK; E-Mails: (J.A.W.); (S.P.D.); (P.S.); (K.R.S.)
- Physical Sciences Department, the Defence Science and Technology Laboratory, Porton Down, Salisbury, Wiltshire SP4 0JQ, UK
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187
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Liaqat I, Bachmann RT, Edyvean RGJ. Type 2 quorum sensing monitoring, inhibition and biofilm formation in marine microrganisms. Curr Microbiol 2013; 68:342-51. [PMID: 24166155 DOI: 10.1007/s00284-013-0484-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 09/11/2013] [Indexed: 12/11/2022]
Abstract
The quorum sensing (QS) dependent behaviour of micro-organisms, in particular expression of virulence genes, biofilm formation and dispersal, have provided impetus for investigating practical approaches to interfere with microbial QS. This study tests Halomonas pacifica and Marinobacter hydrocarbonoclasticus, two halophilic marine micro-organism, for their AI-2 dependent QS signalling and the effect of two well-known quorum-sensing inhibitors (QSIs), patulin and penicillic acid, on biofilm formation. We report, for the first time, the successful amplification of a putative luxS gene in H. pacifica using degenerated primers and AI-2 dependent QS as well as inhibition using QSIs. Penicillic acid had a strong inhibitory effect on AI-2 induction of H. pacifica at non-growth inhibitory concentrations, while patulin has an adverse effect only at the highest concentration (25 μM). QSIs effect on biofilm forming capability was isolate specific, with maximum inhibition at 25 μM of patulin in H. pacifica. In M. hydrocarbonoclasticus, no adverse effects were noted at any tested concentration of either QSIs. Detection of bioluminescence and the presence of a putative luxS gene provide biochemical and genetic evidence for the production of a signalling molecule(s) which is the essential first step in characterizing H. pacifica QS. This study highlights the importance of AI-2 dependent QS in a marine setting, not previously reported. It further suggests that QSI compounds must be selected in the specific system in which they are to function, and they cannot easily be transferred from one QS system to another.
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Affiliation(s)
- Iram Liaqat
- Department of Zoology, Government College University, Lahore, Pakistan,
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188
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Patiño Cano LP, Bartolotta SA, Casanova NA, Siless GE, Portmann E, Schejter L, Palermo JA, Carballo MA. Isolation of acetylated bile acids from the sponge Siphonochalina fortis and DNA damage evaluation by the comet assay. Steroids 2013; 78:982-6. [PMID: 23791668 DOI: 10.1016/j.steroids.2013.05.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 05/18/2013] [Accepted: 05/30/2013] [Indexed: 10/26/2022]
Abstract
From the organic extracts of the sponge Siphonochalina fortis, collected at Bahía Bustamante, Chubut, Argentina, three major compounds were isolated and identified as deoxycholic acid 3, 12-diacetate (1), cholic acid 3, 7, 12-triacetate (2) and cholic acid, 3, 7, 12-triacetate. (3). This is the first report of acetylated bile acids in sponges and the first isolation of compound 3 as a natural product. The potential induction of DNA lesions by the isolated compounds was investigated using the comet assay in lymphocytes of human peripheral blood as in vitro model. The results showed that the administration of the bile acid derivatives would not induce DNA damages, indicating that acetylated bile acids are nontoxic metabolites at the tested concentrations. Since the free bile acids were not detected, it is unlikely that the acetylated compounds may be part of the sponge cells detoxification mechanisms. These results may suggest a possible role of acetylated bile acids as a chemical defense mechanism, product of a symbiotic relationship with microorganisms, which would explain their seasonal and geographical variation, and their influence on the previously observed genotoxicity of the organic extract of S. fortis.
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Affiliation(s)
- Laura P Patiño Cano
- UMYMFOR, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. 2, 1428 Buenos Aires, Argentina.
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189
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Li YX, Wu HX, Xu Y, Shao CL, Wang CY, Qian PY. Antifouling activity of secondary metabolites isolated from chinese marine organisms. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2013; 15:552-8. [PMID: 23613141 DOI: 10.1007/s10126-013-9502-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2012] [Accepted: 03/13/2013] [Indexed: 06/02/2023]
Abstract
Biofouling results in tremendous economic losses to maritime industries around the world. A recent global ban on the use of organotin compounds as antifouling agents has further raised demand for safe and effective antifouling compounds. In this study, 49 secondary metabolites, including diterpenoids, steroids, and polyketides, were isolated from soft corals, gorgonians, brown algae, and fungi collected along the coast of China, and their antifouling activity was tested against cyprids of the barnacle Balanus (Amphibalanus) amphitrite. Twenty of the compounds were found to inhibit larval settlement significantly at a concentration of 25 μg ml(-1). Two briarane diterpenoids, juncin O (2) and juncenolide H (3), were the most promising non-toxic antilarval settlement candidates, with EC50 values less than 0.13 μg ml(-1) and a safety ratio (LC50/EC50) higher than 400. A preliminary structure-activity relationships study indicated that both furanon and furan moieties are important for antifouling activity. Intriguingly, the presence of hydroxyls enhanced their antisettlement activity.
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Affiliation(s)
- Yong-Xin Li
- KAUST Global Collaborative Research, Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, People's Republic of China
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190
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Mieszkin S, Callow ME, Callow JA. Interactions between microbial biofilms and marine fouling algae: a mini review. BIOFOULING 2013; 29:1097-1113. [PMID: 24047430 DOI: 10.1080/08927014.2013.828712] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Natural and artificial substrata immersed in the marine environment are typically colonized by microorganisms, which may moderate the settlement/recruitment of algal spores and invertebrate larvae of macrofouling organisms. This mini-review summarizes the major interactions occurring between microbial biofilms and marine fouling algae, including their effects on the settlement, growth and morphology of the adult plants. The roles of chemical compounds that are produced by both bacteria and algae and which drive the interactions are reviewed. The possibility of using such bioactive compounds to control macrofouling will be discussed.
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Affiliation(s)
- Sophie Mieszkin
- a School of Biosciences, University of Birmingham , Birmingham , UK
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191
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Gittens JE, Smith TJ, Suleiman R, Akid R. Current and emerging environmentally-friendly systems for fouling control in the marine environment. Biotechnol Adv 2013; 31:1738-53. [PMID: 24051087 DOI: 10.1016/j.biotechadv.2013.09.002] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 09/05/2013] [Accepted: 09/10/2013] [Indexed: 01/25/2023]
Abstract
Following the ban in 2003 on the use of tributyl-tin compounds in antifouling coatings, the search for an environmentally-friendly alternative has accelerated. Biocidal TBT alternatives, such as diuron and Irgarol 1051®, have proved to be environmentally damaging to marine organisms. The issue regarding the use of biocides is that concerning the half-life of the compounds which allow a perpetuation of the toxic effects into the marine food chain, and initiate changes in the early stages of the organisms' life-cycle. In addition, the break-down of biocides can result in metabolites with greater toxicity and longevity than the parent compound. Functionalized coatings have been designed to repel the settlement and permanent attachment of fouling organisms via modification of either or both surface topography and surface chemistry, or by interfering with the natural mechanisms via which fouling organisms settle upon and adhere to surfaces. A large number of technologies are being developed towards producing new coatings that will be able to resist biofouling over a period of years and thus truly replace biocides as antifouling systems. In addition urgent research is directed towards the exploitation of mechanisms used by living organisms designed to repel the settlement of fouling organisms. These biomimetic strategies include the production of antifouling enzymes and novel surface topography that are incompatible with permanent attachment, for example, by mimicking the microstructure of shark skin. Other research seeks to exploit chemical signals and antimicrobial agents produced by diverse living organisms in the environment to prevent settlement and growth of fouling organisms on vulnerable surfaces. Novel polymer-based technologies may prevent fouling by means of unfavourable surface chemical and physical properties or by concentrating antifouling compounds around surfaces.
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Affiliation(s)
- Jeanette E Gittens
- Biomedical Research Centre, Sheffield Hallam University, Howard Street, Sheffield, S1 1WB, UK
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192
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Pseudoalteromonas spp. serve as initial bacterial attractants in mesocosms of coastal waters but have subsequent antifouling capacity in mesocosms and when embedded in paint. Appl Environ Microbiol 2013; 79:6885-93. [PMID: 23995925 DOI: 10.1128/aem.01987-13] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The purpose of the present study was to determine if the monoculture antifouling effect of several pigmented pseudoalteromonads was retained in in vitro mesocosm systems using natural coastal seawater and when the bacteria were embedded in paint used on surfaces submerged in coastal waters. Pseudoalteromonas piscicida survived on a steel surface and retained antifouling activity for at least 53 days in sterile seawater, whereas P. tunicata survived and had antifouling activity for only 1 week. However, during the first week, all Pseudoalteromonas strains facilitated rather than prevented bacterial attachment when used to coat stainless steel surfaces and submerged in mesocosms with natural seawater. The bacterial density on surfaces coated with sterile growth medium was 10(5) cells/cm(2) after 7 days, whereas counts on surfaces precoated with Pseudoalteromonas were significantly higher, at 10(6) to 10(8) cells/cm(2). However, after 53 days, seven of eight Pseudoalteromonas strains had reduced total bacterial adhesion compared to the control. P. piscicida, P. antarctica, and P. ulvae remained on the surface, at levels similar to those in the initial coating, whereas P. tunicata could not be detected. Larger fouling organisms were observed on all plates precoated with Pseudoalteromonas; however, plates coated only with sterile growth medium were dominated by a bacterial biofilm. Suspensions of a P. piscicida strain and a P. tunicata strain were incorporated into ship paints (Hempasil x3 87500 and Hempasil 77500) used on plates that were placed at the Hempel A/S test site in Jyllinge Harbor. For the first 4 months, no differences were observed between control plates and treated plates, but after 5 to 6 months, the control plates were more fouled than the plates with pseudoalteromonad-based paint. Our study demonstrates that no single laboratory assay can predict antifouling effects and that a combination of laboratory and real-life methods must be used to determine the potential antifouling capability of new agents or organisms.
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193
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Cahill PL, Heasman K, Jeffs A, Kuhajek J. Laboratory assessment of the antifouling potential of a soluble-matrix paint laced with the natural compound polygodial. BIOFOULING 2013; 29:967-975. [PMID: 23919801 DOI: 10.1080/08927014.2013.822488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Polygodial is a potent and selective inhibitor of ascidian metamorphosis that shows promise for controlling fouling by ascidians in bivalve aquaculture. The current study examined the potency of, and associated effects of seawater exposure on, a rosin-based soluble-matrix paint laced with 0.08-160 ng polygodial g(-1) wet paint matrix. Paint-coated surfaces were soaked in seawater for 0, 2, 4 or 12 weeks prior to screening for antifouling activity using a bioassay based on the nuisance ascidian Ciona savignyi Herdman. Mortality was greater (mean 50% lethal concentration: 5 ± 2 ng g(-1); mean 75% lethal concentration: 17 ± 4 ng g(-1)) and metamorphosis was inhibited (mean 50% anti-metamorphic concentration: 2 ± 0.4 ng g(-1); mean 75% anti-metamorphic concentration: 15 ± 10 ng g(-1)) in C. savignyi larvae exposed to polygodial-laced soluble-matrix paints, relative to control paints without polygodial. Soaking in seawater prior to testing reduced the efficacy of the formulation up to nearly 12-fold, but even after soaking for 12 weeks paints laced with polygodial at 160 ng g(-1) wet paint matrix prevented ⩾90% of the larvae of C. savignyi from completing metamorphosis. The outcome of this experiment provides a positive first step in evaluating the suitability of polygodial-laced soluble-matrix paints for use in aquaculture.
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194
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Müller WEG, Wang X, Proksch P, Perry CC, Osinga R, Gardères J, Schröder HC. Principles of biofouling protection in marine sponges: a model for the design of novel biomimetic and bio-inspired coatings in the marine environment? MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2013; 15:375-398. [PMID: 23525893 DOI: 10.1007/s10126-013-9497-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 03/09/2013] [Indexed: 06/02/2023]
Abstract
The process of biofouling of marine structures and substrates, such as platforms or ship hulls, proceeds in multiple steps. Soon after the formation of an initial conditioning film, formed via the adsorption of organic particles to natural or man-made substrates, a population of different bacterial taxa associates under the formation of a biofilm. These microorganisms communicate through a complex quorum sensing network. Macro-foulers, e.g., barnacles, then settle and form a fouling layer on the marine surfaces, a process that globally has severe impacts both on the economy and on the environment. Since the ban of tributyltin, an efficient replacement of this antifouling compound by next-generation antifouling coatings that are environmentally more acceptable and also showing longer half-lives has not yet been developed. The sponges, as sessile filter-feeder animals, have evolved antifouling strategies to protect themselves against micro- and subsequent macro-biofouling processes. Experimental data are summarized and suggest that coating of the sponge surface with bio-silica contributes to the inhibition of the formation of a conditioning film. A direct adsorption of the surfaces by microorganisms can be impaired through poisoning the organisms with direct-acting secondary metabolites or toxic peptides. In addition, first, compounds from sponges have been identified that interfere with the anti-quorum sensing network. Sponge secondary metabolites acting selectively on diatom colonization have not yet been identified. Finally, it is outlined that direct-acting secondary metabolites inhibiting the growth of macro-fouling animals and those that poison the multidrug resistance pump are available. It is concluded that rational screening programs for inhibitors of the complex and dynamic problem of biofilm production, based on multidisciplinary studies and using sponges as a model, are required in the future.
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Affiliation(s)
- Werner E G Müller
- ERC Advanced Investigator Grant Research Group at Institute for Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, Duesbergweg 6, 55128 Mainz, Germany.
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195
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Chandramouli KH, Dash S, Zhang Y, Ravasi T, Qian PY. Proteomic and metabolomic profiles of marine Vibrio sp. 010 in response to an antifoulant challenge. BIOFOULING 2013; 29:789-802. [PMID: 23822634 DOI: 10.1080/08927014.2013.805209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Vibrio spp. have the ability to form biofilms, which may contribute to the subsequent successful colonization by microfouling and macrofouling organisms. The effects of an antifouling compound, poly-ether B, on Vibrio sp. 010 were investigated using flow cytometry, proteomics, and metabolomics. A 2-D gel-based proteomic analysis was used to identify proteins responsive to poly-ether B treatment. The profiles of biofilm metabolites were analyzed by ultra-performance liquid chromatography-mass spectrometry. Poly-ether B caused a significant reduction in viability. The proteins affected by the treatment were related to nucleotide metabolism, the glyoxylate cycle, and stress responses. Metabolites such as tripeptides, fatty acids, and quorum-sensing molecules were regulated differentially. Down-regulation of proteins and metabolites potentially led to a loss in colonisation ability, thereby affecting the structure of the biofilm. These results suggest that the proteins and metabolites identified may serve as target molecules for potent antifouling compounds.
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Affiliation(s)
- Kondethimmanahalli H Chandramouli
- KAUST Global Collaborative Research, Division of Life Science, The Hong Kong University of Science and Technology, Hong Kong SAR, China
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196
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Montresor LC, Miranda-Filho KC, Paglia A, Luz DMR, Araújo JM, dos S Silva MJ, Gerhard L, Martinez CB, Vidigal THDA. Short-term toxicity of ammonia, sodium hydroxide and a commercial biocide to golden mussel Limnoperna fortunei (Dunker, 1857). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2013; 92:150-154. [PMID: 23582994 DOI: 10.1016/j.ecoenv.2013.03.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2012] [Revised: 03/16/2013] [Accepted: 03/18/2013] [Indexed: 06/02/2023]
Abstract
Macrofouling bivalves are considered an ecological and technological problem worldwide. Control measures have been researched with Limnoperna fortunei, but without success. The aim of the manuscript is to test some alternatives to regulate this harmful invasive mollusk. Mortality and behavioral response (shell gaping) of Limnoperna fortunei exposed to three chemical compounds were evaluated. Values for LC50 96h were: 0.25 (0.24-0.27)mg/L NH3-N, 11.10 (7.45-16.55) mg/L MXD-100 and 88.51 (74.61-105.01)mg/L NaOH. Reduced gaping was observed beginning at concentrations of 0.31mg/L (NH3-N), 100mg/L (MXD-100) and 160mg/L (NaOH) and increased above these values. The percentage of individuals gaping after two hours at LC50 96h differed significantly (χ(2)=79.9; DF=3; p<0.001) in MXD-100 (50%), NaOH (0%), NH3-N (96.7%) and the controls (93.3%). This study contributes to the understanding of the relationship between toxicity and behavioral effects of some toxicants in L. fortunei.
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Affiliation(s)
- Lângia C Montresor
- Laboratório de Malacologia, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Rio de Janeiro, RJ, Brasil, CEP 21.040-900
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197
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Bowie D, Parvizi P, Duncan D, Nelson CJ, Fyles TM. Chemical-genetic identification of the biochemical targets of polyalkyl guanidinium biocides. Org Biomol Chem 2013; 11:4359-66. [PMID: 23689276 DOI: 10.1039/c3ob40593a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkylated guanidinium compounds exhibit microbiocidal activity in marine environments, yet the mode of action of these compounds has not been defined. A comprehensive chemical-genetic approach in budding yeast was used to define the biological processes affected by these compounds. N-Butyl-N'-decylguanidinium and N-hexyl-N'-(3-hydroxypropyl)-N''-octylguanidinium chlorides were shown to prevent yeast growth in a dose-dependent manner. All non-essential genes required for tolerance of sub-lethal amounts of these biocides were identified. These unbiased and systematic screens reveal the two related guanidinium compounds have a non-overlapping spectrum of targets in vivo. A functional tryptophan biosynthetic pathway is essential for tolerance of both biocides, which identifies tryptophan amino acid import as one process affected by these compounds. Further analysis of hypersensitive gene lists demonstrates that the substitutions on alkylated guanidiums confer important functional differences in vivo: one derivative renders the ability to generate acidic vacuoles essential, while the other is synthetically lethal with mutants in the transcriptional response to chemical stress. Altogether the results define the common and distinct biological processes affected by biocidal alkylated guanidinium salts.
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Affiliation(s)
- Drew Bowie
- Department of Biochemistry and Microbiology, University of Victoria, PO Box 3065, Victoria, BC, Canada
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198
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Nong XH, Zheng ZH, Zhang XY, Lu XH, Qi SH. Polyketides from a marine-derived fungus Xylariaceae sp. Mar Drugs 2013; 11:1718-27. [PMID: 23697953 PMCID: PMC3707170 DOI: 10.3390/md11051718] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 04/22/2013] [Accepted: 04/25/2013] [Indexed: 11/16/2022] Open
Abstract
Eighteen polyketides (1-18) including six citrinin derivatives, two phenol derivatives, one cyclopentenone, two naphthol derivatives, and seven tetralone derivatives were isolated from the culture broth of a marine-derived fungal strain Xylariaceae sp. SCSGAF0086. Five of these compounds (1, 2, 8, 9, and 10) were new, and their structures were determined by spectroscopic methods. Compounds 4, 6, 7, and 17 showed enzyme-inhibitory activities towards several tested enzymes, and 6 and 7 showed strong antifouling activity against Bugula neritina larvae settlement. This is the first time that the antifouling and enzyme-inhibitory activities of these compounds has been reported.
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Affiliation(s)
- Xu-Hua Nong
- Key Laboratory of Marine Bio-Resources Sustainable Utilization, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, Guangdong, China; E-Mails: (X.-H.N.); (X.-Y.Z.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi-Hui Zheng
- New Drug Research & Development Center of North China Pharmaceutical Group Corporation, Shijiazhuang, Hebei 052260, China; E-Mails: (Z.-H.Z.); (X.-H.L.)
| | - Xiao-Yong Zhang
- Key Laboratory of Marine Bio-Resources Sustainable Utilization, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, Guangdong, China; E-Mails: (X.-H.N.); (X.-Y.Z.)
| | - Xin-Hua Lu
- New Drug Research & Development Center of North China Pharmaceutical Group Corporation, Shijiazhuang, Hebei 052260, China; E-Mails: (Z.-H.Z.); (X.-H.L.)
| | - Shu-Hua Qi
- Key Laboratory of Marine Bio-Resources Sustainable Utilization, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, Guangdong, China; E-Mails: (X.-H.N.); (X.-Y.Z.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-20-8902-2112; Fax: +86-20-8445-8964
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199
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Ma C, Xu L, Xu W, Zhang G. Degradable polyurethane for marine anti-biofouling. J Mater Chem B 2013; 1:3099-3106. [PMID: 32261013 DOI: 10.1039/c3tb20454e] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Degradable polyurethane (PU) with copolyester oligomer consisting of ε-caprolactone (CL) and glycolide (GA) as the soft segments has been prepared by a combination of ring-opening polymerization and condensation reaction. Enzymatic and hydrolytic degradation experiments demonstrate that the PU can degrade in seawater. Such a polyurethane exhibit a more rapid degradation in comparison with that with poly(ε-caprolactone) (PCL) soft segments because the introduction of GA can reduce the crystallinity, as revealed by differential scanning calorimetry (DSC) and polarizing optical microscope (POM). Marine field tests show that the degradable polyurethane has good antifouling ability due to its self-renewal property. Besides, such polyurethane can serve as a carrier and controlled release system for an antifoulant, and the incorporation of an antifoulant in the polyurethane can significantly improve the antifouling ability and duration.
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Affiliation(s)
- Chunfeng Ma
- Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, P. R. China.
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Lai D, Geng Z, Deng Z, van Ofwegen L, Proksch P, Lin W. Cembranoids from the soft coral Sinularia rigida with antifouling activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4585-4592. [PMID: 23621324 DOI: 10.1021/jf401303q] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Chemical examination of the soft coral Sinularia rigida resulted in the isolation of 12 new cembranoids, namely, sinulariols T-Z5 (1-12), together with a known analogue, 13. Their structures were determined on the basis of 1D and 2D NMR (COSY, HSQC, HMBC, and NOESY) spectroscopic analyses in association with MS and IR data. Compounds 7 and 13 showed potent antifouling activity for the inhibition against the barnacle Balanus amphitrite and moderate inhibition against Bugula neritina . The primary structure-activity relationship is discussed.
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Affiliation(s)
- Daowan Lai
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, People's Republic of China
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