Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving urea or urease
Reexamination Certificate
2006-08-08
2006-08-08
Gitomer, Ralph (Department: 1651)
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving urea or urease
Reexamination Certificate
active
07087398
ABSTRACT:
A system and method for detecting bacterial infections in the gastrointestinal tract is disclosed. In one embodiment, the system includes a first composition separated from a second composition. The first composition contains urea in powdered form. The second composition, on the other hand, contains an indicator. A biopsy of a gastric sample is first contacted with the first composition and then placed in the second composition. The second composition indicates the presence of an enzyme that, in turn, indicates the presence of bacteria. In an alternative embodiment of the present invention, a biopsy of a gastric sample is contacted with a single composition. The composition contains urea in a powdered form combined with a dry indicator. Besides urea and a dry indicator, the composition can also contain an anti-caking agent.
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Article—Development of a Chemiluminescent Urease Activity Assay for Helicobacter pylori Infection Diagnosis in Gastric Mucosa Biopsies, Aldo Roda, Francesco Piazza, Patrizia Pasini, Mario Baraldini, Laura Zambonin, Stefania Fossi, Franco Bazzoli, and Enrico Roda, Analytical Biochemistry, vol. 264, 1998, pp. 47-52.
Chairman Simon
Marshall Barry J.
Mendis Aruni H. W.
Gitomer Ralph
Jagtiani & Guttag
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