ISSN:
1432-0800
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
,
Medicine
Notes:
Summary Escherichia coli andBacteroides fragilis, principal human enteric aerobic and anaerobic bacteria, were cultured with suitable controls in the presence of.01 and.1 ppm of DDT and PCB. The bacteria were assayed for dry weight and total lipids. DDT increased the growth ofE. coli at the.01 ppm level but had no detectable effect at.1 ppm. Total lipid content was not significantly altered by either DDT or PCB. DDT at. 01 ppm depressedB. fragilis growth, but had no significant effect on lipid levels. PCB increased the growth ofB. fragilis significantly at the 1 ppm level, but significantly depressed lipid synthesis at both concentrations. The effect was apparently dose dependent. All cultures metabolized DDT to DDD. Trace amounts of DDE were also found in several replicates. DDT/PCB are statistically associated with cardiovascular disease risk factors, but the mechanism does not appear to be that of increased lipid anabolism by enteric bacteria.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01709122
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