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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: Int J Antimicrob Agents. 2018 Jan 11;51(3):468–478. doi: 10.1016/j.ijantimicag.2017.12.032

Table 6.

Antimicrobial susceptibility of Listeria monocytogenes strains to AMP and corresponding combinational therapy with LL-37 assessed by MIC and checkerboard assays.a

MIC (µg/mL) Checkerboard FICI
(Interpretation)
Strain AMP LL-37 AMP/LL-37 FICIAMP-LL-37
L. monocytogenes
  LM SDVA 1 1 0.03125/1 1.03125(I)
  LM L028 1 2 0.03125/2 1.03125(I)
  LM 2203 1 2 0.03125/2 1.03125(I)
  LM 10403S 0.5 2 0.03125/2 1.0625(I)
  LM EDGE 1 2 0.03125/2 1.03125(I)
a

AMP, Ampicillin; LL-37, Cathelicidin; FICI, Fractional Inhibitory Concentration Index; MIC, minimum inhibitory concentration; I, Indifference.