xenodiagnosis

xenodiagnosis
1. A method of diagnosing acute or early Trypanosoma cruzi infection (Chagas disease) in humans. Infection-free (laboratory-reared) triatomine bugs are fed on the tissue of the suspected person and the trypanosome is identified by microscopic examination of the intestinal contents of the bug after a suitable incubation period. 2. A similar method of biologic diagnosis based upon experimental exposure of a parasite-free normal host capable of allowing the organism in question to multiply, enabling it to be more easily and reliably detected.

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xe·no·di·ag·no·sis .zen-ō-.dī-ig-'nō-səs, .zēn- n, pl -no·ses -.sēz the detection of a parasite (as of humans) by feeding supposedly infected material (as blood) to a suitable intermediate host (as an insect) and later examining the intermediate host for the parasite
xe·no·di·ag·nos·tic -'näs-tik adj

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n.
a procedure for diagnosing infections transmitted by insect carriers. Uninfected insects of the species known to carry the disease in question are allowed to suck the blood of a patient suspected of having the disease. A positive diagnosis is made if the disease parasites appear in the insects. This method has proved invaluable for diagnosing Chagas' disease, using reduviid bugs (the carriers), since the parasites are not always easily detected in blood smears.

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xeno·di·ag·no·sis (zen″o-di″əg-noґsis) [xeno- + diagnosis] a method of animal inoculation using laboratory-bred reduviids and larger animals for diagnosis of parasitic infections when it is not possible to demonstrate the infecting organism in blood films. Originally used for diagnosis of Trypanosoma cruzi infection (Chagas disease), the method is also used in Trichinella spiralis infections. In the original method, bugs are fed or offered the patient's blood through a membrane, and their feces or intestinal contents are examined later for trypanosomes. For the diagnosis of trichinosis, a muscle tissue sample from the patient is fed to laboratory rats to detect larvae of the parasite. xenodiagnostic adj

Medical dictionary. 2011.

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  • xenodiagnosis — |zenō+ noun Etymology: New Latin, from xen + diagnosis : the detection of a parasite (as a blood parasite of man) by allowing a suitable intermediate host (as an insect) to consume supposedly infected material (as blood) and after an incubation… …   Useful english dictionary

  • xenodiagnosis — noun Etymology: New Latin Date: circa 1929 the detection of a parasite (as of humans) by feeding a suitable intermediate host (as an insect) on supposedly infected material (as blood) and later examining the host for the parasite • xenodiagnostic …   New Collegiate Dictionary

  • xenodiagnosis — xenodiagnostic /zen euh duy euhg nos tik, zee neuh /, adj. /zen euh duy euhg noh sis, zee neuh /, n. Med. a method of diagnosing certain diseases caused by insects, ticks, or other vectors, by allowing uninfected vectors to feed on the patient… …   Universalium

  • xenodiagnosis — noun diagnosis of an infectious disease (especially of trypanosomiasis) by exposure to a vector of that disease, incubating the vector and examining it for the presence of the disease …   Wiktionary

  • xenodiagnosis — n. method for diagnosing diseases caused by insects and parasites (Medicine) …   English contemporary dictionary

  • xenodiagnosis — xeno·diagnosis …   English syllables

  • xenodiagnosis — n. a procedure for diagnosing infections transmitted by insect carriers. Uninfected insects of the species known to carry the disease in question are allowed to suck the blood of a patient suspected of having the disease. A positive diagnosis is… …   The new mediacal dictionary

  • xenodiagnosis — /ˌzɛnədaɪəgˈnoʊsəs/ (say .zenuhduyuhg nohsuhs) noun a method of diagnosing certain diseases having insects, ticks, etc., as vectors, by feeding uninfected vectors on the patient and later examining them for infection …  

  • Infectious disease — Classification and external resources A false colored electron micrograph shows a malaria sporozoite migrating through the midgut epithelia. ICD 10 …   Wikipedia

  • Emile Brumpt — Alexandre Joseph Emile Brumpt (March 10, 1877 July 8, 1951) was a French parasitologist who was born in Paris. He studied zoology and parasitology in Paris, and received his degree in science in 1901, and his medical doctorate in 1906. In 1919 he …   Wikipedia

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