The activity of marine extracts against isolates of Mycobacterium tuberculosis with varying susceptibility profiles

Yushir Rugnath Maharaj, Prashini Moodley


1.1.   Aim of the proposed study

To assess the activity of halicyclamine A, nybomycin, trichoderin A and polybrominated diphenyl ether 8 on Mycobacterium tuberculosis isolates with varying susceptibility profiles.


1.2.   Objectives of the proposed study

  • To perform a (3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay on selected isolates in order to determine the Minimum Inhibitory Concentrations (MIC) of the marine extracts.
  • To perform agar dilution based MIC assays in order to confirm data obtained from the MTT assays.
  • To perform both the aforementioned assays under conditions of hypoxia in order to assess the effects of the marine extracts against latent Mycobacterium tuberculosis.
  • To perform kill curve analysis using compounds that show activity on the isolates.