Lipids mediating the interaction of metronidazole with cell membrane models at the air-water interface

Author(s)

Rodrigues, Jefferson Carnevalle ^[1] ; Caseli, Luciano ^[1]

Affiliation

^[1] Univ Fed Sao Paulo, Inst Environm Chem & Pharmaceut Sci, Diadema, SP - Brazil

• Document type: Journal article
• Source: COLLOIDS AND SURFACES B-BIOINTERFACES; v. 171, p. 377-382, NOV 1 2018.
• Web of Science Citations: 4

Abstract

In this paper, metronidazole, a known compound with microbicide effect, was incorporated in Langmuir monolayers of selected phospholipids in order to investigate the interactions of this compound with cell membrane models by using tensiometric, spectroscopic and morphological techniques. Surface pressure-area isotherms showed that selected amounts of metronidazole condense DPPC monolayers, but expand DPPE monolayers. Vibrational spectroscopy pointed that metronidazole adsorbs on the polar heads of the phospholipids, affecting the gauche conformations of the aliphatic chains, and different patterns were observed for DPPC and DPPE monolayers containing metronidazole in terms of Brewster angle microscopy images. As a result, distinctive interactions with DPPC and DPPE could be pointed regarding the incorporation of metronidazole with each lipid, leading to particular molecular arrangements at the air-water interface. (AU)

• FAPESP's process: 15/23446-0 - Smart surfaces: nanostructured and bioinspired systems for the investigation of molecular interactions in membrane models and for the production of devices for biosensors and environmental analysis
• Grantee: Luciano Caseli
• Support Opportunities: Regular Research Grants
• FAPESP's process: 13/14262-7 - Nanostructured films from biologically-relevant materials
• Grantee: Osvaldo Novais de Oliveira Junior
• Support Opportunities: Research Projects - Thematic Grants