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Badawi NM, Yehia RM, Lamie C, Abdelrahman KA, Attia DA, Helal DA. Tackling acne vulgaris by fabrication of tazarotene-loaded essential oil-based microemulsion: In vitro and in vivo evaluation. Int J Pharm X 2023; 5:100185. [PMID: 37396622 PMCID: PMC10314204 DOI: 10.1016/j.ijpx.2023.100185] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/23/2023] [Accepted: 05/26/2023] [Indexed: 07/04/2023] Open
Abstract
This study aimed to formulate and optimize an anti-acne drug namely tazarotene (TZR) in essential oil-based microemulsion (ME) using either Jasmine oil (Jas) or Jojoba oil (Joj). TZR-MEs were prepared using two experimental designs (Simplex Lattice Design®) and characterized for droplet size, polydispersity index, and viscosity. Further in vitro, ex vivo, and in vivo investigations were performed for the selected formulations. Results revealed that TZR-selected MEs exhibited suitable droplet size, homogenous dispersions, and acceptable viscosity, in addition to spherical-shaped particles in morphology. The ex vivo skin deposition study showed a significant TZR accumulation in all skin layers for the Jas-selected ME over the Joj one. Further, TZR didn't show any antimicrobial activity against P. acnes, however, it was boosted when it was incorporated into the selected MEs. The in vivo study results of the infected mice ears induced by P. acnes revealed that our selected MEs successfully reached a high level of ear thickness reduction of 67.1% and 47.4% for Jas and Joj selected MEs, respectively, versus only 4% for the market product. Finally, the findings confirmed the ability to use essential oil-based ME, particularly with Jas, as a promising carrier for topical TZR delivery in the treatment of acne vulgaris.
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Affiliation(s)
- Noha M. Badawi
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Rania M. Yehia
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Caroline Lamie
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Khaled A. Abdelrahman
- Department of Microbiology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Dalia A. Attia
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, The British University in Egypt, Cairo, Egypt
| | - Doaa A. Helal
- Department of Pharmaceutics, Faculty of Pharmacy, Fayoum University, Fayoum 63514, Egypt
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2
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Zhu P, Cai L, Liu Q, Feng S, Ruan H, Zhang L, Zhou L, Jiang H, Wang H, Wang J, Chen J. One-pot synthesis of α-Linolenic acid nanoemulsion-templated drug-loaded silica mesocomposites as efficient bactericide against drug-resistant Mycobacterium tuberculosis. Eur J Pharm Sci 2022; 176:106261. [PMID: 35840102 DOI: 10.1016/j.ejps.2022.106261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/10/2022] [Accepted: 07/11/2022] [Indexed: 12/15/2022]
Abstract
Nowadays, pathogenic infection has posed a severe threat to the public health and environmental sanitation, urging a continuous search of efficacious and safe bactericidal agents of various formulated forms. Here, a facile one-pot hydrothermal preparation of mesoporous silica nanoparticles using ultrasonication-assisted nanoemulsion of α-Linolenic acid (α-LA) as template was developed. The formed silica mesocomposite at water/fatty-acid surface provides an easy yet green synthesis route, which can be generalized for the further encapsulation of hydrophobic drugs such as antimycobacterial Rifampicin (RIF). The obtained α-LA nanoemulsion-templated silica nanoparticles (LNS NPs), with a weight content of ∼17% α-LA in the composite, showed apparent antibacterial effect against Staphylococcus aureus (S. aureus). By comparison, the removal of α-LA from the silica nanoparticles (LNS-1 NPs) resulted in the composite of enlarged pore size with negligible bactericidal activities. Notably, the Isoniazide (INH) and Rifampicin (RIF)-encapsulated LNS NPs exhibited outstanding antimycobacterial activity against both drug-sensitive and drug-resistant Mycobacterium tuberculosis (M. tuberculosis). The obtained highly biocompatible, biosafe and low-energy consumptive α-LA-contained mesostructured silica-based bactericide holds promising therapeutic potentials to tackle the emerging drug-resistant infectious microbes.
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Affiliation(s)
- Ping Zhu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Ling Cai
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Qiao Liu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Department of Chronic Communicable Disease, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, China
| | - Shanwu Feng
- Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, 123 Tianfei Lane, Nanjing 210004, China
| | - Hongjie Ruan
- Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, 123 Tianfei Lane, Nanjing 210004, China
| | - Li Zhang
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Liuzhu Zhou
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Huijun Jiang
- School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Hongsheng Wang
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, St. 12 Jiangwangmiao, Nanjing 210042, China.
| | - Jianming Wang
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China.
| | - Jin Chen
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Jiangsu Province Engineering Research Center of Antibody Drug, Key Laboratory of Antibody Technique of National Health Commission, Nanjing Medical University, Nanjing 211166, China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Xinjiang Production & Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin, Tarim University, Alar 843300, China.
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3
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Cepas V, Gutiérrez-Del-Río I, López Y, Redondo-Blanco S, Gabasa Y, Iglesias MJ, Soengas R, Fernández-Lorenzo A, López-Ibáñez S, Villar CJ, Martins CB, Ferreira JD, Assunção MFG, Santos LMA, Morais J, Castelo-Branco R, Reis MA, Vasconcelos V, López-Ortiz F, Lombó F, Soto SM. Microalgae and Cyanobacteria Strains as Producers of Lipids with Antibacterial and Antibiofilm Activity. Mar Drugs 2021; 19:md19120675. [PMID: 34940674 PMCID: PMC8709229 DOI: 10.3390/md19120675] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/19/2021] [Accepted: 11/25/2021] [Indexed: 12/16/2022] Open
Abstract
Lipids are one of the primary metabolites of microalgae and cyanobacteria, which enrich their utility in the pharmaceutical, feed, cosmetic, and chemistry sectors. This work describes the isolation, structural elucidation, and the antibiotic and antibiofilm activities of diverse lipids produced by different microalgae and cyanobacteria strains from two European collections (ACOI and LEGE-CC). Three microalgae strains and one cyanobacteria strain were selected for their antibacterial and/or antibiofilm activity after the screening of about 600 strains carried out under the NoMorFilm European project. The total organic extracts were firstly fractionated using solid phase extraction methods, and the minimum inhibitory concentration and minimal biofilm inhibitory concentration against an array of human pathogens were determined. The isolation was carried out by bioassay-guided HPLC-DAD purification, and the structure of the isolated molecules responsible for the observed activities was determined by HPLC-HRESIMS and NMR methods. Sulfoquinovosyldiacylglycerol, monogalactosylmonoacylglycerol, sulfoquinovosylmonoacylglycerol, α-linolenic acid, hexadeca-4,7,10,13-tetraenoic acid (HDTA), palmitoleic acid, and lysophosphatidylcholine were found among the different active sub-fractions selected. In conclusion, cyanobacteria and microalgae produce a great variety of lipids with antibiotic and antibiofilm activity against the most important pathogens causing severe infections in humans. The use of these lipids in clinical treatments alone or in combination with antibiotics may provide an alternative to the current treatments.
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Affiliation(s)
- Virginio Cepas
- ISGlobal, Hospital Clínic—Universitat de Barcelona, 08036 Barcelona, Spain; (V.C.); (Y.L.); (Y.G.)
| | - Ignacio Gutiérrez-Del-Río
- Research Group BIONUC (Biotechnology of Nutraceuticals and Bioactive Compounds), Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006 Oviedo, Spain; (I.G.-D.-R.); (S.R.-B.); (A.F.-L.); (S.L.-I.); (C.J.V.); (F.L.)
- IUOPA (Instituto Universitario de Oncología del Principado de Asturias), Principality of Asturias, 33006 Oviedo, Spain
- ISPA (Instituto de Investigaciones Sanitarias del Principado de Asturias), Principality of Asturias, 33011 Oviedo, Spain
| | - Yuly López
- ISGlobal, Hospital Clínic—Universitat de Barcelona, 08036 Barcelona, Spain; (V.C.); (Y.L.); (Y.G.)
| | - Saúl Redondo-Blanco
- Research Group BIONUC (Biotechnology of Nutraceuticals and Bioactive Compounds), Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006 Oviedo, Spain; (I.G.-D.-R.); (S.R.-B.); (A.F.-L.); (S.L.-I.); (C.J.V.); (F.L.)
- IUOPA (Instituto Universitario de Oncología del Principado de Asturias), Principality of Asturias, 33006 Oviedo, Spain
- ISPA (Instituto de Investigaciones Sanitarias del Principado de Asturias), Principality of Asturias, 33011 Oviedo, Spain
| | - Yaiza Gabasa
- ISGlobal, Hospital Clínic—Universitat de Barcelona, 08036 Barcelona, Spain; (V.C.); (Y.L.); (Y.G.)
| | - María José Iglesias
- Área de Química Orgánica, Centro de Investigación CIAIMBITAL, Universidad de Almería, 04120 Almería, Spain; (M.J.I.); (R.S.); (F.L.-O.)
| | - Raquel Soengas
- Área de Química Orgánica, Centro de Investigación CIAIMBITAL, Universidad de Almería, 04120 Almería, Spain; (M.J.I.); (R.S.); (F.L.-O.)
| | - Andrés Fernández-Lorenzo
- Research Group BIONUC (Biotechnology of Nutraceuticals and Bioactive Compounds), Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006 Oviedo, Spain; (I.G.-D.-R.); (S.R.-B.); (A.F.-L.); (S.L.-I.); (C.J.V.); (F.L.)
- IUOPA (Instituto Universitario de Oncología del Principado de Asturias), Principality of Asturias, 33006 Oviedo, Spain
- ISPA (Instituto de Investigaciones Sanitarias del Principado de Asturias), Principality of Asturias, 33011 Oviedo, Spain
| | - Sara López-Ibáñez
- Research Group BIONUC (Biotechnology of Nutraceuticals and Bioactive Compounds), Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006 Oviedo, Spain; (I.G.-D.-R.); (S.R.-B.); (A.F.-L.); (S.L.-I.); (C.J.V.); (F.L.)
- IUOPA (Instituto Universitario de Oncología del Principado de Asturias), Principality of Asturias, 33006 Oviedo, Spain
- ISPA (Instituto de Investigaciones Sanitarias del Principado de Asturias), Principality of Asturias, 33011 Oviedo, Spain
| | - Claudio J. Villar
- Research Group BIONUC (Biotechnology of Nutraceuticals and Bioactive Compounds), Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006 Oviedo, Spain; (I.G.-D.-R.); (S.R.-B.); (A.F.-L.); (S.L.-I.); (C.J.V.); (F.L.)
- IUOPA (Instituto Universitario de Oncología del Principado de Asturias), Principality of Asturias, 33006 Oviedo, Spain
- ISPA (Instituto de Investigaciones Sanitarias del Principado de Asturias), Principality of Asturias, 33011 Oviedo, Spain
| | - Clara B. Martins
- Coimbra Collection of Algae (ACOI), Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, 3000-456 Coimbra, Portugal; (C.B.M.); (J.D.F.); (M.F.G.A.); (L.M.A.S.)
- “Molecular Physical-Chemistry” R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Joana D. Ferreira
- Coimbra Collection of Algae (ACOI), Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, 3000-456 Coimbra, Portugal; (C.B.M.); (J.D.F.); (M.F.G.A.); (L.M.A.S.)
| | - Mariana F. G. Assunção
- Coimbra Collection of Algae (ACOI), Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, 3000-456 Coimbra, Portugal; (C.B.M.); (J.D.F.); (M.F.G.A.); (L.M.A.S.)
| | - Lília M. A. Santos
- Coimbra Collection of Algae (ACOI), Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, 3000-456 Coimbra, Portugal; (C.B.M.); (J.D.F.); (M.F.G.A.); (L.M.A.S.)
| | - João Morais
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Terminal de Cruzeiros do Porto de Leixões, University of Porto, 4450-208 Matosinhos, Portugal; (J.M.); (R.C.-B.); (M.A.R.); (V.V.)
| | - Raquel Castelo-Branco
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Terminal de Cruzeiros do Porto de Leixões, University of Porto, 4450-208 Matosinhos, Portugal; (J.M.); (R.C.-B.); (M.A.R.); (V.V.)
| | - Mariana A. Reis
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Terminal de Cruzeiros do Porto de Leixões, University of Porto, 4450-208 Matosinhos, Portugal; (J.M.); (R.C.-B.); (M.A.R.); (V.V.)
| | - Vitor Vasconcelos
- Interdisciplinary Centre of Marine and Environmental Research (CIIMAR/CIMAR), Terminal de Cruzeiros do Porto de Leixões, University of Porto, 4450-208 Matosinhos, Portugal; (J.M.); (R.C.-B.); (M.A.R.); (V.V.)
- Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, Edifício FC4, 4169-007 Porto, Portugal
| | - Fernando López-Ortiz
- Área de Química Orgánica, Centro de Investigación CIAIMBITAL, Universidad de Almería, 04120 Almería, Spain; (M.J.I.); (R.S.); (F.L.-O.)
| | - Felipe Lombó
- Research Group BIONUC (Biotechnology of Nutraceuticals and Bioactive Compounds), Departamento de Biología Funcional, Área de Microbiología, Universidad de Oviedo, 33006 Oviedo, Spain; (I.G.-D.-R.); (S.R.-B.); (A.F.-L.); (S.L.-I.); (C.J.V.); (F.L.)
- IUOPA (Instituto Universitario de Oncología del Principado de Asturias), Principality of Asturias, 33006 Oviedo, Spain
- ISPA (Instituto de Investigaciones Sanitarias del Principado de Asturias), Principality of Asturias, 33011 Oviedo, Spain
| | - Sara M. Soto
- ISGlobal, Hospital Clínic—Universitat de Barcelona, 08036 Barcelona, Spain; (V.C.); (Y.L.); (Y.G.)
- Correspondence: ; Tel.: +34-932275400
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4
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Casillas-Vargas G, Ocasio-Malavé C, Medina S, Morales-Guzmán C, Del Valle RG, Carballeira NM, Sanabria-Ríos DJ. Antibacterial fatty acids: An update of possible mechanisms of action and implications in the development of the next-generation of antibacterial agents. Prog Lipid Res 2021; 82:101093. [PMID: 33577909 PMCID: PMC8137538 DOI: 10.1016/j.plipres.2021.101093] [Citation(s) in RCA: 146] [Impact Index Per Article: 48.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/24/2021] [Accepted: 01/26/2021] [Indexed: 12/14/2022]
Abstract
The antibacterial activity of fatty acids (FA) is well known in the literature and represents a promising option for developing the next-generation of antibacterial agents to treat a broad spectrum of bacterial infections. FA are highly involved in living organisms' defense system against numerous pathogens, including multidrug-resistant bacteria. When combined with other antibacterial agents, the remarkable ability of FA to enhance their bactericidal properties is a critical feature that is not commonly observed in other naturally-occurring compounds. More reviews focusing on FA antibacterial activity, traditional and non-traditional mechanisms and biomedical applications are needed. This review is intended to update the reader on the antibacterial properties of recent FA and how their chemical structures influence their antibacterial activity. This review also aims to better understand both traditional and non-traditional mechanisms involved in these recently explored FA antibacterial activities.
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Affiliation(s)
- Giancarlo Casillas-Vargas
- Faculty of Science and Technology, Department of Natural Sciences, Inter American University of Puerto Rico, Metropolitan Campus, PO Box 191293, San Juan, PR 00919, USA
| | - Carlimar Ocasio-Malavé
- Faculty of Science and Technology, Department of Natural Sciences, Inter American University of Puerto Rico, Metropolitan Campus, PO Box 191293, San Juan, PR 00919, USA
| | - Solymar Medina
- Faculty of Science and Technology, Department of Natural Sciences, Inter American University of Puerto Rico, Metropolitan Campus, PO Box 191293, San Juan, PR 00919, USA
| | - Christian Morales-Guzmán
- University of Puerto Rico, Río Piedras Campus, Department of Chemistry, 17 Ave. Universidad Ste. 1701, San Juan, PR 00925-2537, USA
| | - René García Del Valle
- University of Puerto Rico, Río Piedras Campus, Department of Chemistry, 17 Ave. Universidad Ste. 1701, San Juan, PR 00925-2537, USA
| | - Néstor M Carballeira
- University of Puerto Rico, Río Piedras Campus, Department of Chemistry, 17 Ave. Universidad Ste. 1701, San Juan, PR 00925-2537, USA.
| | - David J Sanabria-Ríos
- Faculty of Science and Technology, Department of Natural Sciences, Inter American University of Puerto Rico, Metropolitan Campus, PO Box 191293, San Juan, PR 00919, USA.
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5
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Uz Zaman KA, Wu X, Hu Z, Yoshida W, Hou S, Saito J, Avad KA, Hevener KE, Alumasa JN, Cao S. Antibacterial kaneoheoic acids A-F from a Hawaiian fungus Fusarium sp. FM701. PHYTOCHEMISTRY 2021; 181:112545. [PMID: 33217722 PMCID: PMC7869588 DOI: 10.1016/j.phytochem.2020.112545] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/02/2020] [Accepted: 10/13/2020] [Indexed: 05/10/2023]
Abstract
Alarming rate of resistance to the existing antibiotics exhibits the importance of developing new antibiotic molecules from relatively under explored sources as well as implementing alternative approaches like antibiotic adjuvants. Six previously undescribed fungal polyketides, kaneoheoic acids A-F (1-6) were isolated from a fungal strain Fusarium sp. FM701 which was collected from a muddy sample of Hawaiian beach. The structures of these six compounds were elucidated by spectroscopic interpretation, including HRESIMS and NMR, and electronic circular dichroism (ECD) analysis. All six compounds that were inactive when tested alone showed significant antibacterial activity against Staphylococcus aureus and Bacillus subtilis, in the range of 10-80 μg/mL when assayed in combination with either chloramphenicol (half of the MIC, 1 μg/mL), an FDA approved antibiotic or disulfiram (6 μg/mL), an established antibiotic adjuvant that augmented the activity of antibiotics.
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Affiliation(s)
- Kh Ahammad Uz Zaman
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, HI, 96720, United States
| | - Xiaohua Wu
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, HI, 96720, United States
| | - Zhenquan Hu
- Warshel Institute for Computational Biology, The Chinese University of Hong Kong, Shenzhen, People's Republic of China; School of Chemistry and Materials Science, University of Science and Technology of China, People's Republic of China
| | - Wesley Yoshida
- Department of Chemistry, University of Hawai'i at Manoa, Hawaii, United States
| | - Shaobin Hou
- Advanced Studies in Genomics, Proteomics and Bioinformatics (ASGPB), University of Hawai'i at Manoa, Honolulu, HI, 96822, United States
| | - Jennifer Saito
- Advanced Studies in Genomics, Proteomics and Bioinformatics (ASGPB), University of Hawai'i at Manoa, Honolulu, HI, 96822, United States
| | | | - Kirk E Hevener
- College of Pharmacy, University of Tennessee Health Science Center, United States
| | - John N Alumasa
- Department of Biochemistry and Molecular Biology, Pennsylvania State University, United States
| | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, Hilo, HI, 96720, United States; Cancer Biology Program, University of Hawaii Cancer Center, 701 Ilalo Street, Honolulu, Hawai'i, 96813, United States.
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6
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R. C S, Kipkemboi PK, Rop K. Synthesis, Characterization, and Evaluation of Solution Properties of Sesame Fatty Methyl Ester Sulfonate Surfactant. ACS OMEGA 2020; 5:28643-28655. [PMID: 33195917 PMCID: PMC7658934 DOI: 10.1021/acsomega.0c03698] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/06/2020] [Indexed: 05/10/2023]
Abstract
The search for alternative, biodegradable, and sustainable raw materials to replace finite petrochemicals is an area of great interest. Triglycerides obtained from oilseed crops are such potential raw materials. In this study, sesame oil was trans-esterified to sesame fatty methyl esters (SEFAMEs) that were used as precursors in the synthesis of sesame fatty methyl esters sulfonate (SEFAMESO) surfactant. SEFAME and SEFAMESO surfactants were characterized by high-performance liquid chromatography-mass spectrometry (HPLC-MS), 1H NMR, and Fourier transform infrared (FTIR) spectra. HPLC-MS, 1H NMR, and FTIR spectra indicated successful trans-esterification and conversion of SEFAMEs to SEFAMESO. Solution properties of the SEFAMESO surfactant including hydrophilic-lipophilic balance (HLB) value, Krafft point, foam-ability, critical micelle concentration (CMC), counterion degree of binding and thermodynamic parameters such as ΔG°mic, ΔH°mic, ΔS°mic, ΔH°mic,* and T C were evaluated. The CMC values of SEFAMESO at 298.15 K were relatively lower than that of the sodium dodecyl sulfate (SDS) standard, and these values decreased to a minimum at 303.15 K and then increased with an increase in temperature. ΔG°mic values were negative indicating a spontaneous micellization process. ΔH°mic and ΔS°mic values revealed that micellization was entropy-driven at low temperatures and both entropy- and enthalpy-driven at high temperatures. ΔH°mic,* values were negative suggesting formation of stable micelles. The evaluated properties revealed the potential application of the synthesized surfactant as a cleansing agent.
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Affiliation(s)
- Soy R. C
- Department
of Chemistry and Biochemistry, University
of Eldoret, P.O. Box 1125, 30100 Eldoret, Kenya
| | - Pius K. Kipkemboi
- Department
of Chemistry and Biochemistry, University
of Eldoret, P.O. Box 1125, 30100 Eldoret, Kenya
| | - Kiplangat Rop
- Department
of Chemistry, University of Nairobi, P.O. Box 30197, 00100 Nairobi, Kenya
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7
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Ukachukwu FU, Rafiq A, Snyder LAS. Challenges in treating ophthalmia neonatorum. EXPERT REVIEW OF OPHTHALMOLOGY 2020. [DOI: 10.1080/17469899.2021.1829475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Faith Uche Ukachukwu
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University, Kingston upon Thames, UK
| | - Afshan Rafiq
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University, Kingston upon Thames, UK
| | - Lori A. S. Snyder
- School of Life Sciences, Pharmacy, and Chemistry, Kingston University, Kingston upon Thames, UK
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8
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Üstündağ Okur N, Çağlar EŞ, Siafaka PI. Novel Ocular Drug Delivery Systems: An Update on Microemulsions. J Ocul Pharmacol Ther 2020; 36:342-354. [PMID: 32255728 DOI: 10.1089/jop.2019.0135] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Sufficient ophthalmic drug delivery is still challenging for pharmaceutical technologists, despite various scientific efforts. Several ocular drug carriers have been designed to enhance bioavailability by prolonging the drug retention time. One of the current encouraging approaches is the utilization of colloidal carriers with the characteristic submicron-nanometer size. Microemulsions (MEs) are such colloid systems that present sizes between 5 and 200 nm with significant thermodynamic stability and low surface tension. In addition, MEs as topical ocular carriers can lead to great ocular drug adsorption due to their enhanced retention time. Furthermore, considering that MEs are stable for long time and various temperatures, their ocular application is of great interest. The aim of this study is to cover basic physicochemical principals of ocular MEs such as their possible size, stability, and therapeutic efficacy against various eye disorders. Thus, a comprehensive review for ocular drug delivery systems in the form of MEs that show promising characteristics as their stability and therapeutic efficiency is performed.
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Affiliation(s)
- Neslihan Üstündağ Okur
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Health Sciences, Istanbul, Turkey
| | - Emre Şefik Çağlar
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Health Sciences, Istanbul, Turkey.,Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul, Turkey
| | - Panoraia I Siafaka
- School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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9
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In Vitro Models of Eye Infection with Neisseria gonorrhoeae. Methods Mol Biol 2020. [PMID: 31119634 DOI: 10.1007/978-1-4939-9496-0_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Prophylaxis with silver nitrate and later antibiotics has significantly reduced the cases of infant blindness from gonococcal infection at birth to the point where it has all but been forgotten in the developed world as the devastating disease that it was in the pre-antibiotic era. As a result, while it is known that the bacteria are transmitted to the eyes during passage through the infected birth canal, little is known about Neisseria gonorrhoeae colonization of the eye and the establishment and progression of keratitis. Treatment failures due to rising antimicrobial resistance necessitate investigations into all aspects of gonococcal disease, including eye infections, so that new treatment strategies can be developed. Here we present models for N. gonorrhoeae eye infection using excised bovine corneas and coculture of gonococci with primary human corneal epithelial cells. These models can be used to explore the interactions of the bacteria with corneal tissues and cells and to investigate novel therapeutics against infection.
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Churchward CP, Alany RG, Snyder LAS. Alternative antimicrobials: the properties of fatty acids and monoglycerides. Crit Rev Microbiol 2018; 44:561-570. [PMID: 29733249 DOI: 10.1080/1040841x.2018.1467875] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
With the rising antibiotic resistance of many bacterial species, alternative treatments are necessary to combat infectious diseases. The World Health Organization and the US Centres for Disease Control and Prevention have warned that some infections, such as those from Neisseria gonorrhoeae, may be untreatable within a few years. One avenue of exploration is the use of antimicrobial fatty acids and their derivatives for therapeutic prevention or treatment of bacterial infections. Several studies have explored the activity of fatty acids and their derivatives, including monoglycerides against a variety of bacterial species. These are reviewed here, assessing the antimicrobial properties that have been demonstrated and the feasibility of therapeutic applications.
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Affiliation(s)
- Colin P Churchward
- a School of Life Sciences, Pharmacy, and Chemistry , Kingston University , Kingston upon Thames , UK
| | - Raid G Alany
- a School of Life Sciences, Pharmacy, and Chemistry , Kingston University , Kingston upon Thames , UK
| | - Lori A S Snyder
- a School of Life Sciences, Pharmacy, and Chemistry , Kingston University , Kingston upon Thames , UK
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Butt U, ElShaer A, Snyder LAS, Al-Kinani AA, Le Gresley A, Alany RG. Fatty Acid Based Microemulsions to Combat Ophthalmia Neonatorum Caused by Neisseria gonorrhoeae and Staphylococcus aureus. NANOMATERIALS 2018; 8:nano8010051. [PMID: 29351260 PMCID: PMC5791138 DOI: 10.3390/nano8010051] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/05/2018] [Accepted: 01/08/2018] [Indexed: 11/16/2022]
Abstract
The bacterial species Neisseria gonorrhoeae (N. gonorrhoeae) and Staphylococcus aureus (S. aureus) are amongst the main microorganisms that cause ophthalmia neonatorum. The current treatment involves the use of various antibiotics such as ciprofloxacin, cephalosporin, ceftriaxone and cefotaxime. However, this treatment strategy is becoming more ineffective due to the antibiotic resistance in N. gonorrhoeae. The current study explores the potential use of fatty acid based microemulsions (ME) to prevent N. gonorrhoeae and S. aureus infections in new-borns' eyes without harmful side effects such as corneal or conjunctiva irritation. Pseudo-ternary phase diagrams were constructed to evaluate microemulsion regions and six different α-linolenic acid based microemulsions were prepared. The prepared formulations were characterized for α-linolenic acid content, size, transparency, zeta potential, Polarized light Microscopy, antimicrobial activity and ex vivo ocular toxicity. The mean droplet size of the ME formulations was in the range of 190.4 to 350.5 nm and polydispersity index (PDI) values were in the range of 0.102 to 0.561. All formulations were found stable upon storage for at least 8 weeks. In addition, self-diffusion coefficients determined by nuclear magnetic resonance (NMR) reflected that the diffusability of water increased at higher than 30% w/w water, while that of fatty acids and surfactants was in reverse. The antimicrobial efficacy of microemulsions was determined against N. gonorrhoeae and S. aureus. It was concluded that all microemulsions have strong antimicrobial effects against N. gonorrhoeae and S. aureus. Finally, bovine corneal opacity permeability (BCOP) and hen's egg chorioallantoic (HET-CAM) tests results showed that all microemulsion formulations were not strong ocular irritants.
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Affiliation(s)
- Ummara Butt
- Drug Discovery, Delivery and Patient Care (DDDPC), School of Life Sciences, Pharmacy and Chemistry, Kingston University, Penrhyn Road, Kingston upon Thames, Surrey KT1 2EE, UK.
| | - Amr ElShaer
- Drug Discovery, Delivery and Patient Care (DDDPC), School of Life Sciences, Pharmacy and Chemistry, Kingston University, Penrhyn Road, Kingston upon Thames, Surrey KT1 2EE, UK.
| | - Lori A S Snyder
- School of Life Sciences, Pharmacy and Chemistry, Kingston University, Kingston upon Thames KT1 2EE, UK.
| | - Ali A Al-Kinani
- Drug Discovery, Delivery and Patient Care (DDDPC), School of Life Sciences, Pharmacy and Chemistry, Kingston University, Penrhyn Road, Kingston upon Thames, Surrey KT1 2EE, UK.
| | - Adam Le Gresley
- Drug Discovery, Delivery and Patient Care (DDDPC), School of Life Sciences, Pharmacy and Chemistry, Kingston University, Penrhyn Road, Kingston upon Thames, Surrey KT1 2EE, UK.
| | - Raid G Alany
- Drug Discovery, Delivery and Patient Care (DDDPC), School of Life Sciences, Pharmacy and Chemistry, Kingston University, Penrhyn Road, Kingston upon Thames, Surrey KT1 2EE, UK.
- School of Pharmacy, University of Auckland, Auckland 1142, New Zealand.
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