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Petelska AD, Figaszewski ZA. The Equilibria of Phosphatidylethanolamine-Cholesterol and Phosphatidylcholine–Phosphatidylethanolamine in Monolayers at the Air/Water Interface. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2009. [DOI: 10.1080/10601320902851884] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Castillo JA, Pinazo A, Carilla J, Infante MR, Alsina MA, Haro I, Clapés P. Interaction of antimicrobial arginine-based cationic surfactants with liposomes and lipid monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2004; 20:3379-87. [PMID: 15875872 DOI: 10.1021/la036452h] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The present work examines the relationship between the antimicrobial activity of novel arginine-based cationic surfactants and the physicochemical process involved in the perturbation of the cell membrane. To this end, the interaction of these surfactants with two biomembrane models, namely, 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) multilamellar lipid vesicles (MLVs) and monolayers of DPPC, 1,2-dipalmitoyl-sn-glycero-3-[phospho-rac-(1-glycerol)] sodium salt (DPPG), and Escherichia coli total lipid extract, was investigated. For the sake of comparison, this study included two commercial antimicrobial agents, hexadecyltrimethylammonium bromide and chlorhexidine dihydrochloride. Changes in the thermotropic phase transition parameters of DPPC MLVs in the presence of the compounds were studied by differential scanning calorimetry analysis. The results show that variations in both the transition temperature (Tm) and the transition width at half-height of the heat absorption peak (deltaT1/2) were consistent with the antimicrobial activity of the compounds. Penetration kinetics and compression isotherm studies performed with DPPC, DPPG, and E. coli total lipid extract monolayers indicated that both steric hindrance effects and electrostatic forces explained the antimicrobial agent-lipid interaction. Overall, in DPPC monolayers single-chain surfactants had the highest penetration capacity, whereas gemini surfactants were the most active in DPPG systems. The compression isotherms showed an expansion of the monolayers compared with that of pure lipids, indicating an insertion of the compounds into the lipid molecules. Owing to their cationic character, they are incorporated better into the negatively charged DPPG than into zwitterionic DPPC lipid monolayers.
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Affiliation(s)
- José A Castillo
- Institute for Chemical and Environmental Research CSIC, Jordi Girona 18-26, 08034 Barcelona, Spain
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Sospedra P, Espina M, Asunción Alsina M, Isabel Haro MA, Mestres C. Miscibility of Hepatitis A Synthetic Antigen Peptides with Lipid Monolayers: Effect of the Amino Acid Sequence Change. J Phys Chem B 2002. [DOI: 10.1021/jp021459d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patricia Sospedra
- Department of Physical Chemistry, Faculty of Pharmacy, Universitat de Barcelona, Av. Joan XXIII s.n., 08028, Barcelona, Spain, and Department of Peptide & Protein Chemistry, IIQAB.CSIC, Jordi Girona Salgado 18, 08034, Barcelona, Spain
| | - Marta Espina
- Department of Physical Chemistry, Faculty of Pharmacy, Universitat de Barcelona, Av. Joan XXIII s.n., 08028, Barcelona, Spain, and Department of Peptide & Protein Chemistry, IIQAB.CSIC, Jordi Girona Salgado 18, 08034, Barcelona, Spain
| | - M. Asunción Alsina
- Department of Physical Chemistry, Faculty of Pharmacy, Universitat de Barcelona, Av. Joan XXIII s.n., 08028, Barcelona, Spain, and Department of Peptide & Protein Chemistry, IIQAB.CSIC, Jordi Girona Salgado 18, 08034, Barcelona, Spain
| | - M. A. Isabel Haro
- Department of Physical Chemistry, Faculty of Pharmacy, Universitat de Barcelona, Av. Joan XXIII s.n., 08028, Barcelona, Spain, and Department of Peptide & Protein Chemistry, IIQAB.CSIC, Jordi Girona Salgado 18, 08034, Barcelona, Spain
| | - Concepció Mestres
- Department of Physical Chemistry, Faculty of Pharmacy, Universitat de Barcelona, Av. Joan XXIII s.n., 08028, Barcelona, Spain, and Department of Peptide & Protein Chemistry, IIQAB.CSIC, Jordi Girona Salgado 18, 08034, Barcelona, Spain
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