L. Monteiro et al., COMPLEX POLYSACCHARIDES AS PCR INHIBITORS IN FECES - HELICOBACTER-PYLORI MODEL, Journal of clinical microbiology, 35(4), 1997, pp. 995-998
A model was developed to study inhibitors present in feces which preve
nt the use of PCR for the detection of Helicobacter pylori. A DNA frag
ment amplified with the same primers as H. pylori was used to spike sa
mples before extraction by a modified QIAamp tissue method. Inhibitors
, separated on an Ultrogel AcA44 column, were characterized. Inhibitor
s in feces are complex polysaccharides possibly originating from veget
able material in the diet.