Sj. Kohlhepp et al., PIG-KIDNEY (LLC-PK1) CELL-MEMBRANE FLUIDITY DURING EXPOSURE TO GENTAMICIN OR TOBRAMYCIN, Antimicrobial agents and chemotherapy, 38(9), 1994, pp. 2169-2171
The surface membrane properties of LLC-PK1, cells grown,vith and witho
ut various amounts of gentamicin or tobramycin for various lengths of
time were determined by measuring the diffusion coefficient of N-(7-ni
trobenz-2-oxa-1,3-diazol 4-yl)dipalmitoyl-L-alpha-phosphatidylethanola
mine (NBD-PE) and the percentage of NBD-PE free to diffuse after photo
bleaching. One hour of exposure to tobramycin decreased the percentage
that was free to diffuse. After 1 day or longer of exposure to either
aminoglycoside the percentage that was free to diffuse returned to pr
eexposure levels and the diffusion coefficient decreased.