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Khalil RT, Alshimy A, Elsherbini E, Abd-ELLAH ME. The microbiological effect of virgin coconut oil on the morphological and volumetric dimensional changes of 3D printed surgical guides (in vitro study). BMC Oral Health 2022; 22:636. [PMID: 36564796 PMCID: PMC9786529 DOI: 10.1186/s12903-022-02671-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND/OBJECTIVES Disinfection of surgical guides is mandatory for intraoperative use. Virgin Coconut Oil may be a potent alternative disinfectant; however, its effect has not been fully discussed in dentistry. The objectives of this study were to compare the morphological and the volumetric dimensional changes of 3D printed surgical guides after immersion in three disinfectants: 100%Virgin Coconut Oil, 2% Glutaraldehyde, and 70% Ethyl Alcohol and to assess the antimicrobial effectiveness of the tested disinfectants. MATERIALS AND METHODS A surgical guide was designed using open platform software to print thirty guides and then cut them into two halves (N = 60). Pre-disinfection scans of the first half of the three study groups (n = 30) were performed using Cone-beam Computed Tomography, then immersed for 20 min in three disinfectants as follows: group VCO was immersed in 100% Virgin Coconut Oil, group GA was immersed in 2% Glutaraldehyde, and group EA was immersed in 70% Ethyl Alcohol. Post-disinfection scans of the first half of the three study groups (n = 30) were performed and then compared morphologically and volumetrically using an analyzing software program The second half of the three control groups (n* = 30) were soaked for 20 min in sterile distilled water as follows: group VCO*, group GA*, and group EA* for the assessment of the antimicrobial effectiveness of the three tested disinfectants. RESULTS At the morphological assessment of the dimensional changes, group VCO were the most accurate with the lowest mean deviation value of 0.12 ± 0.02 mm and root mean square value of 0.12 mm, group GA and group EA were less accurate with mean deviation value of = 0.22 ± 0.05 mm and = 0.19 ± 0.03 mm and root mean square value of 0.22 and 0.20 respectively (p < 0.001). At the volumetric assessment, group VCO showed lower volumetric changes with a mean deviation value of 0.17 ± 0.10 mm, root mean square value of 0.19 mm, than group GA with mean deviation value of 0.23 ± 0.10 mm, root mean square value of 0.25 mm and group EA with mean deviation value of 0.27 ± 0.11 mm, root mean square value of 0.29 mm, however, no statistically significant differences were found between the three study groups (p = 0.10). The antimicrobial effectiveness of the three tested disinfectants showed a hundred percent (100%) reduction in the total microbial count in the first half of the three study groups treated with the three disinfectants revealing no bacterial growth, however, statistically significant differences were found between the second half of the three control and the first half of the three study groups. (p < 0.001). CONCLUSIONS Virgin Coconut Oil showed higher morphological dimensional accuracy of the tested surgical guides than Glutaraldehyde and Ethyl Alcohol without causing any volumetric dimensional changes in the 3D printed surgical guides after disinfection for 20 min and the antimicrobial effectiveness was the same between the three tested disinfectants without showing any microbial growth.
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Affiliation(s)
- Rania T. Khalil
- grid.7155.60000 0001 2260 6941Department of Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Ahmed Alshimy
- grid.7155.60000 0001 2260 6941Department of Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
| | - Eglal Elsherbini
- grid.7155.60000 0001 2260 6941Department of Microbiology, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Mervat E. Abd-ELLAH
- grid.7155.60000 0001 2260 6941Department of Prosthodontics, Faculty of Dentistry, Alexandria University, Alexandria, Egypt
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Pietrangelo L, Magnifico I, Petronio Petronio G, Cutuli MA, Venditti N, Nicolosi D, Perna A, Guerra G, Di Marco R. A Potential “Vitaminic Strategy” against Caries and Halitosis. Applied Sciences 2022; 12:2457. [DOI: 10.3390/app12052457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Streptococcus mutans and Fusobacterium nucleatum are two key bacteria of the oral microbiota. Due to their ability to form biofilms on oral tissues, they are both involved in the onset of the most common oral diseases. F. nucleatum is also the principal producer of hydrogen sulfide (H2S), causative of the awkward bad breath of halitosis. In this study, the oral product Vea® Oris, made by vitamin E and capric/caprylic acid only, was evaluated as a potential treatment for the most common oral diseases. Different concentrations of the product were tested against both S. mutans and F. nucleatum. The effect on planktonic and biofilm growth was investigated for both strains, and for F. nucleatum, the influence on H2S production was evaluated. From our data, the product did not relevantly reduce the planktonic growth of both strains, whereas it validly counteracted biofilm assemblage. Moreover, an interesting trend of H2S reduction was highlighted. Overall, these results suggested, on the one hand, a synergistic antimicrobial–antibiofilm action of two Vea® Oris components and, together, potential modulation activity on H2S production. However, the study should be implemented to confirm these only preliminary findings, certainly extending the panel of tested bacteria and using alternative methods of detection.
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Shah MD, Venmathi Maran BA, Shaleh SRM, Zuldin WH, Gnanaraj C, Yong YS. Therapeutic Potential and Nutraceutical Profiling of North Bornean Seaweeds: A Review. Mar Drugs 2022; 20:101. [PMID: 35200631 PMCID: PMC8879771 DOI: 10.3390/md20020101] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/11/2022] [Accepted: 01/14/2022] [Indexed: 02/06/2023] Open
Abstract
Malaysia has a long coastline surrounded by various islands, including North Borneo, that provide a suitable environment for the growth of diverse species of seaweeds. Some of the important North Bornean seaweed species are Kappaphycus alvarezii, Eucheuma denticulatum, Halymenia durvillaei (Rhodophyta), Caulerpa lentillifera, Caulerpa racemosa (Chlorophyta), Dictyota dichotoma and Sargassum polycystum (Ochrophyta). This review aims to highlight the therapeutic potential of North Bornean seaweeds and their nutraceutical profiling. North Bornean seaweeds have demonstrated anti-inflammatory, antioxidant, antimicrobial, anticancer, cardiovascular protective, neuroprotective, renal protective and hepatic protective potentials. The protective roles of the seaweeds might be due to the presence of a wide variety of nutraceuticals, including phthalic anhydride, 3,4-ethylenedioxythiophene, 2-pentylthiophene, furoic acid (K. alvarezii), eicosapentaenoic acid, palmitoleic acid, fucoxanthin, β-carotene (E. denticulatum), eucalyptol, oleic acid, dodecanal, pentadecane (H. durvillaei), canthaxanthin, oleic acid, pentadecanoic acid, eicosane (C. lentillifera), pseudoephedrine, palmitic acid, monocaprin (C. racemosa), dictyohydroperoxide, squalene, fucosterol, saringosterol (D. dichotoma), and lutein, neophytadiene, cholest-4-en-3-one and cis-vaccenic acid (S. polycystum). Extensive studies on the seaweed isolates are highly recommended to understand their bioactivity and mechanisms of action, while highlighting their commercialization potential.
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Affiliation(s)
- Muhammad Dawood Shah
- Borneo Marine Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia; (B.A.V.M.); (S.R.M.S.); (W.H.Z.)
| | - Balu Alagar Venmathi Maran
- Borneo Marine Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia; (B.A.V.M.); (S.R.M.S.); (W.H.Z.)
| | - Sitti Raehanah Muhamad Shaleh
- Borneo Marine Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia; (B.A.V.M.); (S.R.M.S.); (W.H.Z.)
| | - Wahidatul Husna Zuldin
- Borneo Marine Research Institute, Universiti Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia; (B.A.V.M.); (S.R.M.S.); (W.H.Z.)
| | - Charles Gnanaraj
- Faculty of Pharmacy and Health Sciences, University Kuala Lumpur Royal College of Medicine Perak, Ipoh 30450, Perak, Malaysia;
| | - Yoong Soon Yong
- Laboratory Center, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia;
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Alves E, Dias M, Lopes D, Almeida A, Domingues MDR, Rey F. Antimicrobial Lipids from Plants and Marine Organisms: An Overview of the Current State-of-the-Art and Future Prospects. Antibiotics (Basel) 2020; 9:E441. [PMID: 32722192 DOI: 10.3390/antibiotics9080441] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 07/17/2020] [Accepted: 07/22/2020] [Indexed: 02/07/2023] Open
Abstract
In the actual post-antibiotic era, novel ways of rethinking antimicrobial research approaches are more urgent than ever. Natural compounds with antimicrobial activity such as fatty acids and monoacylglycerols have been investigated for decades. Additionally, the interest in other lipid classes as antimicrobial agents is rising. This review provides an overview on the research about plant and marine lipids with potential antimicrobial activity, the methods for obtaining and analyzing these compounds, with emphasis on lipidomics, and future perspectives for bioprospection and applications for antimicrobial lipids. Lipid extracts or lipids isolated from higher plants, algae or marine invertebrates are promising molecules to inactivate a wide spectrum of microorganisms. These lipids include a variety of chemical structures. Present and future challenges in the research of antimicrobial lipids from natural origin are related to the investment and optimization of the analytical workflow based on lipidomics tools, complementary to the bioassay-guided fractionation, to identify the active compound(s). Also, further work is needed regarding the study of their mechanism of action, the structure-activity relationship, the synergistic effect with conventional antibiotics, and the eventual development of resistance to lipids, which, as far as is known, is unlikely.
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Patlolla VGR, Peter Holbrook W, Gizurarson S, Kristmundsdottir T. Doxycycline and Monocaprin In Situ Hydrogel: Effect on Stability, Mucoadhesion and Texture Analysis and In Vitro Release. Gels 2019; 5:E47. [PMID: 31835322 PMCID: PMC6956273 DOI: 10.3390/gels5040047] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 11/27/2019] [Accepted: 12/02/2019] [Indexed: 11/17/2022] Open
Abstract
The aim of this study was to develop a stable aqueous formulation containing a combination of doxycycline and monocaprin in clinically relevant concentrations. Increase in expression of Matrix metalloproteinases (MMPs) and microbial role in oral diseases is well established and the combination of above active ingredients could be potentially beneficial in treatment of oral mucosal conditions. The hydrogels containing different concentrations of doxycycline and monocaprin in the presence and absence of stabilizing excipients were developed and their stabilities were studied at 4 °C for up to 1 year. The drug-drug interaction was evaluated using Fourier-transform infrared spectroscopy (FTIR). The addition of monocaprin on doxycycline in situ hydrogel's mucoadhesiveness, texture properties and drug release mechanism was studied. The addition of monocaprin negatively affected the doxycycline stability and was concentration dependent, whereas monocaprin was stable up to 1 year. Doxycycline did not interfere with the anti-Candidal activity of monocaprin. Furthermore, the presence of monocaprin significantly affected the formulation hardness, compressibility and adhesiveness. Monocaprin and doxycycline release followed zero order kinetics and the release mechanism was, by anomalous (non-Fickian) diffusion. The addition of monocaprin increased the drug release time and altered the release mechanism. It is possible to stabilize doxycycline in the presence of monocaprin up to 1 year at 4 °C.
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Affiliation(s)
- Venu Gopal Reddy Patlolla
- Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, 107 Reykjavik, Iceland; (V.G.R.P.); (S.G.)
- Faculty of Odontology, University of Iceland, Vatnsmýrarveg 16, 101 Reykjavík, Iceland;
| | | | - Sveinbjorn Gizurarson
- Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, 107 Reykjavik, Iceland; (V.G.R.P.); (S.G.)
| | - Thordis Kristmundsdottir
- Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, 107 Reykjavik, Iceland; (V.G.R.P.); (S.G.)
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Ma M, Wen X, Xie Y, Guo Z, Zhao R, Yu P, Gong D, Deng S, Zeng Z. Antifungal activity and mechanism of monocaprin against food spoilage fungi. Food Control 2018. [DOI: 10.1016/j.foodcont.2017.07.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Mhanna A, Chupin L, Brachais C, Chaumont D, Boni G, Brachais L, Couvercelle J, Lecamp L, Plasseraud L. Efficient microwave‐assisted synthesis of glycerol monodecanoate. EUR J LIPID SCI TECH 2017. [DOI: 10.1002/ejlt.201700133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ali Mhanna
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB)Université de Bourgogne Franche‐ComtéDijonBourgogneFrance
| | - Lucie Chupin
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB)Université de Bourgogne Franche‐ComtéDijonBourgogneFrance
| | - Claire‐Hélène Brachais
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB)Université de Bourgogne Franche‐ComtéDijonBourgogneFrance
| | - Denis Chaumont
- Laboratoire interdisciplinaire Carnot de Bourgogne, (ICB)Université de Bourgogne Franche‐ComtéDijonBourgogneFrance
| | - Gilles Boni
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB)Université de Bourgogne Franche‐ComtéDijonBourgogneFrance
| | - Laurent Brachais
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB)Université de Bourgogne Franche‐ComtéDijonBourgogneFrance
| | - Jean‐Pierre Couvercelle
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB)Université de Bourgogne Franche‐ComtéDijonBourgogneFrance
| | - Laurence Lecamp
- University of Normandy, INSA of RouenUMR CNRS 6270Saint Etienne du Rouvray CedexFrance
| | - Laurent Plasseraud
- Institut de Chimie Moléculaire de l'Université de Bourgogne (ICMUB)Université de Bourgogne Franche‐ComtéDijonBourgogneFrance
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Ham Y, Kim TJ. Inhibitory activity of monoacylglycerols on biofilm formation in Aeromonas hydrophila, Streptococcus mutans, Xanthomonas oryzae, and Yersinia enterocolitica. Springerplus 2016; 5:1526. [PMID: 27652099 PMCID: PMC5017964 DOI: 10.1186/s40064-016-3182-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 08/31/2016] [Indexed: 12/05/2022]
Abstract
Biofilm provides a bacterial hiding place by forming a physical barrier and causing physiological changes in cells. The elimination of biofilm is the main goal of hygiene. Chemicals that are inhibitory to biofilm formation have been developed for use in food, personal hygiene products, and medical instruments. Monoacylglycerols are recognized as safe and are used in food as emulsifiers. In this study, the inhibitory activity of monoacylglycerols on bacterial biofilm formation was evaluated systematically with four bacterial strains, Aeromonas hydrophila, Streptococcus mutans, Xanthomonas oryzae, and Yersinia enterocolitica. Monoacylglycerols with two specific lengths of fatty acid moiety, monolaurin and monobehenin, were found to have strong inhibitory activity toward bacterial biofilm formation of S. mutans, X. oryzae, and Y. enterocolitica in a strain specific manner. First, this result suggested that biofilm formation was not inhibited by the detergent characteristics of monoacylglycerols. This suggestion was supported by the inhibitory action of monolaurin on biofilm development but not on the initial cell attachment of Y. enterocolitica in flow cytometric observation. Second, it was also suggested that two distinct response mechanisms to monoacylglycerols existed in bacteria. The existence of these two inhibitory response mechanisms was bacterial strain specific.
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Affiliation(s)
- Youngseok Ham
- Department of Forest Products and Biotechnology, College of Forest Science, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 02707 Korea
| | - Tae-Jong Kim
- Department of Forest Products and Biotechnology, College of Forest Science, Kookmin University, 77 Jeongneung-ro, Seongbuk-gu, Seoul, 02707 Korea
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Yong CC, Khoo BY, Sasidharan S, Piyawattanametha W, Kim SH, Khemthongcharoen N, Chuah LO, Ang MY, Liong MT. Activity of crude and fractionated extracts by lactic acid bacteria (LAB) isolated from local dairy, meat, and fermented products against Staphylococcus aureus. ANN MICROBIOL 2015. [DOI: 10.1007/s13213-014-0949-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Doležalová M, Janiš R, Svobodová H, Kašpárková V, Humpolíček P, Krejčí J. Antimicrobial properties of 1-monoacylglycerols prepared from undecanoic (C11:0) and undecenoic (C11:1) acid. EUR J LIPID SCI TECH 2010. [DOI: 10.1002/ejlt.200900295] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Oliveira Paranhos HF, Silva-Lovato CH, de Souza RF, Cruz PC, de Freitas-Pontes KM, Watanabe E, Ito IY. Effect of Three Methods for Cleaning Dentures on Biofilms Formed In Vitro on Acrylic Resin. J Prosthodont 2009; 18:427-31. [DOI: 10.1111/j.1532-849x.2009.00450.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Abstract
OBJECTIVES The objective of this study was to evaluate the accuracy and reproducibility of three complete denture biofilm indices (Prosthesis Hygiene Index; Jeganathan et al. Index; Budtz-Jørgensen Index) by means of a computerised comparison method. BACKGROUND Clinical studies into denture hygiene have employed a large number of biofilm indices among their outcome variables. However, the knowledge about the validity of these indices is still scarce. MATERIALS AND METHODS Sixty-two complete denture wearers were selected. The internal surfaces of the upper complete dentures were stained (5% erythrosine) and photographed. The slides were projected on paper, and the biofilm indices were applied over the photos by means of a scoring method. For the computerised method, the areas (total and biofilm-covered) were measured by dedicated software (Image Tool). In addition, to compare the results of the computerised method and Prosthetic Hygiene Index, a new scoring scale (including four and five graded) was introduced. For the Jeganathan et al. and Budtz-Jørgensen indices, the original scales were used. Values for each index were compared with the computerised method by the Friedman test. Their reproducibility was measured by means of weighed kappa. Significance for both tests was set at 0.05. RESULTS The indices tested provided similar mean measures but they tended to overestimate biofilm coverage when compared with the computerised method (p < 0.001). Agreement between the Prosthesis Hygiene Index and the computerised method was not significant, regardless of the scale used. Jeghanathan et al. Index showed weak agreement, and consistent results were found for Budtz-Jorgensen Index (kappa = 0.19 and 0.39 respectively). CONCLUSION Assessment of accuracy for the biofilm indices showed instrument bias that was similar among the tested methods. Weak inter-instrument reproducibility was found for the indices, except for the Budtz-Jørgensen Index. This should be the method of choice for clinical studies when more sophisticated approaches are not possible.
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Thormar H, Hilmarsson H. The role of microbicidal lipids in host defense against pathogens and their potential as therapeutic agents. Chem Phys Lipids 2007; 150:1-11. [PMID: 17686469 DOI: 10.1016/j.chemphyslip.2007.06.220] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2007] [Revised: 06/21/2007] [Accepted: 06/23/2007] [Indexed: 12/16/2022]
Abstract
Lipids such as fatty alcohols, free fatty acids and monoglycerides of fatty acids are known to be potent antimicrobial/microbicidal agents in vitro and to kill enveloped viruses, Gram-positive and Gram-negative bacteria and fungi on contact. For over half a century several studies have tried to answer the question of whether or not lipids play a role in the natural host defense against pathogens. A comprehensive review is given of these studies, particularly concerning infections in skin and in mucosal membranes of the respiratory tract, and of the role of lipids in the antimicrobial activity of breast milk. Based on studies of the microbicidal activities of lipids, both in vitro and in vivo, the possibility of using such lipids as active ingredients in prophylactic and therapeutic dosage forms is considered and examples are given of studies of such pharmaceutical dosage forms in experimental animal models and in clinical trials.
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Affiliation(s)
- Halldor Thormar
- Institute of Biology, University of Iceland, Askja, Sturlugata 7, 101 Reykjavík, Iceland.
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