The reproducibilities of BMO-MRW, BMO area measurements and FoBMO angle were excellent in both healthy subjects and patients with glaucoma. Bruch's membrane opening minimum rim width (BMO-MRW) reproducibility is comparable to that of RNFLT measurements.
Summary
Calonectria hemileiae
, a fungus associated with pustules of the coffee leaf rust (CLR,
Hemileia vastatrix
) in Brazil, was tested
in vitro
and
in planta
to assess its biocontrol potential. The fungus inhibited the germination of rust spores by over 80%. CLR severity was reduced by 93% when
Calonectria
was applied to coffee leaf discs inoculated with
H. vastatrix
, whilst a reduction of 70-90% was obtained for
in planta
experiments. Mycoparasitism was demonstrated through the fulfillment of Koch's postulates. Elucidation of the biochemical interaction between
Calonectria
and
Hemileia
on coffee plants indicated that the mycoparasite was able to increase plant resistance to rust infection. Coffee plants sprayed with
Calonectria
alone showed greater levels of chitinase,
β
-1,3-glucanase, ascorbate peroxidase and peroxidase. Although effective in controlling the rust, fungicide applications damaged coffee photosynthesis, whereas no harm was caused by
Calonectria.
We conclude that
C. hemileiae
shows promise as a biocontrol agent of CLR.
Amphotericin B (AmB) is effective against visceral leishmaniasis (VL), but the renal toxicity of the conventional form, mixed micelles with deoxycholate (M-AmB), is often dose-limiting, while the less toxic lipid-based formulations such as AmBisome are very expensive. Two different strategies to improve the therapeutic index of AmB with inexpensive ingredients were evaluated on this work: (i) the heat treatment of the commercial formulation (H-AmB) and (ii) the preparation of an AmB-loaded microemulsion (ME-AmB). M-AmB was heated to 70 °C for 20 min. The resulting product was characterized by UV spectrophotometry and circular dichroism, showing super-aggregates formation. ME-AmB was prepared from phosphate buffer pH 7.4, Tween 80, Lipoid S100 and Mygliol 812 with AmB at 5 mg/mL. The droplet size, measured by dynamic light scattering, was about 40 nm and transmission electron microscopy confirmed a spherical shape. Rheological analysis showed low viscosity and Newtonian behavior. All the formulations were active in vitro and in vivo against Leishmania donovani (LV9). A selectivity index (CC on RAW/IC on LV9) higher than 10 was observed for ME-AmB, H-AmB and AmBisome. Furthermore, no important in vivo toxicity was observed for all the samples. The in-vivo efficacy of the formulations after IV administration was evaluated in Balb/C mice infected with LV9 (three doses of 1 mg/kg AmB) and no significant difference was observed between H-AmB, M-AmB, ME-AmB and AmBisome. In conclusion, these two inexpensive alternative formulations for AmB showing good efficacy and selectivity for Leishmania donovani merit further investigation.
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