Staphylococcus aureus growth

Perez, C., and C. Anesini. Antibacterial activity of alimentary plants against Staphylococcus aureus growth. 

A H (o-OHr R.iHr— n- — 4-An(ipyrinyl H Staphylococcus aureus growth inhibitory action 818... 

Bioassay-guided fractionation of an extract of Artemisia annua was conducted in order to assess the possible presence in the plant material of inhibitors of bacterial multidrug resistance pumps [218]. Fractions were tested for Staphylococcus aureus growth inhibition in the presence of a subinhibitory dose of weak antibacterial alkaloid berberine. Active fractions yielded the flavones chrysoplenol D and chrysoplenetin,... 

Tran PA, Webster TJ. Selenium nanoparticles inhibit Staphylococcus aureus growth. Int J Nanomed 2011 6 1553. 

There are several other examples in which berberine is combined with other substances to potentiate its antibacterial activity. Flavones, chrysosplenol-D, and chrysoplenetm from Artemisia annua L. (Asteraceae), which possess very weak antibacterial action by themselves, produce potent combinations with berberine resulting in very effective inhibition of Staphylococcus aureus growth. The combination of amphotericin B and berberine can reduce by approximately 75 % the amphotericin B dose in the treatment of candidiasis in mice, implying that berberine indeed has synergy with amphotericin B against C. albicans [104]. Another example is methicillin-resistant Staphylococcus aureus (MRSA) bacteria, which are responsible for substantial morbidity and mortality in hospitals. According to Yu et al., berberine is able to restore the effectiveness of / -lactam antibiotics... 

This can be a dangerous procedure due to the potential growth of food poisoning bacteria such as Staphylococcus aureus (31). This method of inoculation requites a very strict condition to assure the absence of not only bacteria associated with a health hazard but also those associated with product failure (proteolytic, greening, and gas-forming microorganisms). 

Proper refrigeration prevents the growth of some microorganisms, such as Salmonella and the production of toxins, such as Staphylococcus aureus. The growth of bacteria Tscherichia coli and Bacillus cereus is substantially checked by proper cooling and handling of milk. Table 14 Hsts diseases transmitted by cows to humans. Pasteurization is the best means of prevention. 

Tricyclic pyrazole derivatives (698) are described by Hashem et al. as inhibitors of the growth of Bacillus subtilis, Pseudomonas fluorescens, Staphylococcus aureus and KB cells at moderate concentrations (76JMC229). 

Deformylation of nascent polypeptides has been shown to be a function essential for growth in E. coli, Staphylococcus aureus and Streptococcus pneumoniae [15-18]. Moreover, antibacterial mode of action studies, using S. pneumoniae or S. aureus strains in which the expression of PDF is controlled by regulatable promoters, have shown that the antibacterial activity of PDF inhibitors is due to their inhibition of the PDF enzyme, as the susceptibility of the strains to these compounds is dependent on the amount of protein present in the cell [19-21]. These results further validate PDF as a target for novel antibiotics. 

Mn2+ active transport system in Staphylococcus aureus. These metal-microbe interactions result in decrease microbial growth, abnormal morphological changes, and inhibition of biochemical processes in individual (Akmal et al. 2005a,b). The toxic effects of metals can be seen on a community level as well. In response to metal toxicity, overall community numbers and diversity decrease. Soil is a living system where all biochemical activities proceed through enzymatic processes. Heavy metals have also adverse effects on enzyme activities (Fig. 1). 

FIG. 16 Minimum aw for growth of Staphylococcus aureus in specific solute systems at 30 to 37 °C (data from Chirife and Buera, 1996). 

Gonzalez-Fandos, E., Otero, A., Sierra, M., Garcia-Lopez, M.L. and Prieto, M., Effect of three commercial starters on growth of Staphylococcus aureus and enterotoxins (A-D) and thermonuclease production in broth, Int. J. Food Microbiol, 24, 321-327, 1994. 

Onoue, Y. and Mori, M., Amino acid requirements for the growth and enterotoxin production by Staphylococcus aureus in chemically defined media, Int. J. Food Microbiol., 36, 77-82, 1997. 

Schmitt, M., Schuler-Schmid, U. and Schmidt-Lorenz, W., Temperature limits of growth, TNase and enterotoxin production of Staphylococcus aureus strains isolated from foods, Int. J. Food Microbiol., 11, 1-19, 1990. 

Tranter, H.S., Tassou, S.C. and Nychas, G.J., The eflect of the olive phenolic compound, oleuropein, on growth and enterotoxin B production by Staphylococcus aureus, J. Appl. Bacterial., 74, 253-9, 1993. 

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