October 2015
Prevalence of Mycobacterium leprae in the environment: A review
The purpose of this review was to study the presence of Mycobacterium leprae in the environment and its relation with meteorological variables such as temperature and humidity. There are reports, which provide evidence that meteorological factors such as temperature and soil humidity can influence the dynamics of M. leprae. However, leprosy cases are registered both in the rainy and dry seasons, indicating that M....
October 2015
Antibacterial in vitro assays of new ï§-aminoethers and derivatives against Gram-negative and Gram-positive pathogenic bacteria
A growth inhibition effect against four Gram-negative (Pseudomonas aeruginosa, Salmonella typhimurium, Klebsiella pneumoniae and Escherichia coli) and three Gram-positive (Staphylococcus aureus, Bacillus cereus and Enterococcus faecalis) pathogenic bacteria was observed for 19 of 20 tested synthetic compounds (that is seven ï§-aminoethers, nine ï§-aminoalcohols and four allylamines). According to the results, the...
October 2015
Effects of vegetation and seasonality on bacterial communities in Amazonian dark earth and adjacent soils
Amazonian Dark Earth (ADE) in the Brazilian Amazon is the main evidence left by pre-Columbian indigenous populations indicating that infertile soils can be transformed into highly fertile ground. Changes in vegetation cover and seasonality are likely to influence microbial communities; however, little is known about these effects on ADE. Therefore, this study compared the effects of two land use systems in ADE and...
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