Biomedical subjects

M V Torres

Publications and source records attributed to M V Torres.

3 recordsLinked to original sources

PubMed2002

A comparison between disk diffusion and microdilution for susceptibility testing of Mycobacterium fortuitum complex.

We evaluated a disk diffusion method using Mueller-Hinton agar for susceptibility testing of Mycobacterium fortuitum complex organisms. Ninety-five strains were tested both by broth microdilution and disk diffusion. Global results showed good correlation for all antimicrobials except for clarithromycin and erythromycin. However, when the results were analyzed according to species, correlation was poor except for a few antimicrobials. The analysis of the resistant/susceptible results was good for all the antimicrobials tested except azithromycin and erythromycin. In conclusion, the disk diffusion technique could be useful as a screening technique for some antibiotics, but the results must be confirmed by using an accepted reference technique.

Amikacin↗

PubMed1993

Satellite oligodendrocytes and myelin are displaced in the cortex of the reeler mouse.

The spatial distribution of satellite (perineuronal) oligodendrocytes and myelin was studied in the cortices of normal and reeler mice. In normal mice, satellite oligodendrocytes were concentrated in the inner third of the cortex. In reeler mice, satellite oligodendrocytes were present beneath the pial surface and distributed throughout the width of the cortex. In reeler mice, but not normal mice, myelin was present in patches beneath the pia and distributed throughout the width of the cortex. The abnormal position of satellite oligodendrocytes and myelin coincides with the displacement of neurons and axons in the cortex of reeler mice. These studies indicate that the distribution of cortical oligodendrocytes is influenced by neuronal/axonal position.

Aging↗

PubMed1992

Morphological features of degenerating oligodendrocytes in twitcher mice.

The morphological features of degenerating oligodendrocytes in twitcher mice were examined by a modified iron histochemical technique. Oligodendrocytes in twitcher mice were found to have several features distinct from oligodendrocytes in normal mice; swellings at different sites along their processes, swollen soma and an increase in iron-rich, oval structures in their cytoplasm. In addition to changes in oligodendrocyte morphology, endothelial cells in brains of twitcher mice were found to be highly enriched with iron.

Animals↗