Bacterial ecology

Myllys, V., Honkanen-Buzalski, T., Huovinen, P., Sandholm, M. and Nurmi, E. (1994), Association of changes in the bacterial ecology of bovine mastitis with changes in the use of milking machines and antibacterial drugs . Acta Veterinaria Scandinavica, 363-369. 

Phase I studies suggest that DS vaginal gel used at doses of up to 100 pg/ml does not exert an adverse effect on vaginal epithelium, or on vaginal bacterial ecology. However, no conclusions can be drawn at this stage about the likely tolerability, safety and efficacy of the gel in the context of sexual intercourse. 

JM] H. W. Jannash and R. T. Mateles (1974), Experimental bacterial ecology studies in continuous culture, Advances in Microbial Physiology 11 165-212. 

Dugan, P.R., 1975. Bacterial ecology of strip mine areas and its relationship to the production of acid mine drainage. Ohio J. Sci., 76 266—279. 

Fig. 15.11 Factors affecting pH after a 10% glucose or sucrose mouth rinse. Dashed line indicates pH 7. Vectors 1 and 4 increase the pH vectors 2 and 3 decrease the pH. The short-chain carboxylic acids (SCCA) may be produced from amino acids along with ammonia, or from the catabolism of lactic acid (see text and also Fig. 1.8). (From Fig. 9 in Kleinberg I, 2002. A mixed-bacterial ecological approach to understanding the role of the oral bacteria in dental caries causation an alternative to Streptococcus mutans and the specific-plaque hypothesis. Crit Rev Oral Biol Med 13 108-125)...

Cocohn, L., Urso, R., Rantsiou, K., Cantoni, C., Comi, G. (2006). Multiphasic approach to study the bacterial ecology of fermented sausages inoculated with a commercial starter cuVOac. Applied and Environmental Microbiology, 72, 942-945. 

Freilich S, Kreimer A, Borenstein E, et al. Metabolic-network-driven analysis of bacterial ecological strategies. Gettome Biol. 2009 10 R61. 

These studies have revealed a number of cardinal aspects of microbial ecology (a) the complexity of bacterial ecosystems, (b) the number of organisms of hitherto undetermined taxonomy, (c) the existence of organisms that have not been cultivated, and (d) the difficulty of assigning metabolic roles to many of the genomic sequences that have been revealed. Some examples are given to... 

L. Marilley and M. Aragno, Phylogenetic diversity of bacterial communities differing in degree of proximity of Lolium perenne and Trifolium repens roots. Applied Soil Ecology 73 127 (1999). 

Minimal effects on intestinal flora were seen with rifaximin administration [9, 35]. In an early study, performed on healthy volunteers who received a short-term (5 days) rifaximin treatment, the observed changes in bowel flora returned to baseline levels within 1-2 weeks [9]. In a recent investigation fecal samples of patients with ulcerative colitis given three 10 day courses of the antibiotic were cultured and the different microbial species quantitated. Despite the high dose (i.e. 1800 mg daily) of rifaximin used there was only a minor change in bacterial counts which reverted back to pre-treatment values during the washout period [35]. It appears therefore that administration of this antibiotic does not disrupt intestinal microbial ecology. 

Effects of wastewater treatment plant discharge on the ecology of bacterial communities in the sediment of a small, low-gradient stream in South Australia, and the quantification of genes involved in the biogeochemical cycling of carbon and nitrogen [167]... 

Huber, J. A., D. A. Butterfield and J. A. Baross, 2003, Bacterial diversity in a sub-seafloor habitat following a deep-sea volcanic eruption. FEMS Microbiology Ecology 43, 393 109. 

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