Detection of diamines in biological fluids
First Claim
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1. A method for the detection of putrescine and cadaverine in vaginal secretions to diagnose vaginal infection comprising the steps of:
- adding a sample of vaginal fluid to a mixture comprising;
a diamine oxidase having a high specificity for a diamine selected from the group consisting of putrescine and cadaverine, and which reacts with putrescine and cadaverine to form hydrogen peroxide; and
a chromogenic system to detect the presence of elevated levels of hydrogen peroxide resulting from the reaction between said diamine oxidase and putrescine and cadaverine.
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Abstract
A fast-acting and portable diagnostic kit for detecting diamines in biological fluids is in the form of a diamine oxidase and a chromogenic system to detect the presence of hydrogen peroxide resulting from oxidation of such diamines. The kit may especially be used to detect cadaverine or putrescine or a mixture thereof, for example in a vaginal secretion, in order to detect Gardnerella-related bacterial vaginosis.
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15 Claims
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1. A method for the detection of putrescine and cadaverine in vaginal secretions to diagnose vaginal infection comprising the steps of:
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adding a sample of vaginal fluid to a mixture comprising; a diamine oxidase having a high specificity for a diamine selected from the group consisting of putrescine and cadaverine, and which reacts with putrescine and cadaverine to form hydrogen peroxide; and a chromogenic system to detect the presence of elevated levels of hydrogen peroxide resulting from the reaction between said diamine oxidase and putrescine and cadaverine. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A diagnostic kit useful for the direct testing of vaginal fluid to detect the presence of elevated levels of putrescine and cadaverine for diagnosis of vaginal infection, consisting essentially of the following elements in at least one container:
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a premeasured amount of diamine oxidase which is highly specific for a diamine selected from the group consisting of putrescine and cadaverine, and which reacts with putrescine and cadaverine to form hydrogen peroxide; a premeasured amount of a chromogenic system responsive to hydrogen peroxide; said diamine oxidase and said chromogenic system being disposed in said at least one container container. - View Dependent Claims (8, 9, 10, 11)
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- 12. A diagnostic device useful for the direct testing of vaginal fluid to detect the presence of elevated levels of putrescine and cadaverine for diagnosis of vaginal infection, consisting essentially of a paper or other surface layer absorbed with a test composition consisting essentially of a premeasured amount of diamine oxidase which is highly specific for a diamine selected from the group consisting of putrescine and cadaverine, and which reacts with putrescine and cadaverine to form hydrogen peroxide, and a premeasured amount of a chromogenic system responsive to hydrogen peroxide.
Specification