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Recent applications of the Dot-ELISA in immunoparasitology 总被引:2,自引:0,他引:2
M G Pappas 《Veterinary parasitology》1988,29(2-3):105-129
The dot enzyme-linked immunosorbent assay (Dot-ELISA) is a highly versatile solid-phase immunoassay for antibody or antigen detection. The assay uses minute amounts of reagent dotted onto solid surfaces such as nitrocellulose and other paper membranes which avidly bind proteins. After incubation with antigen-specific antibody and enzyme-conjugated anti-antibody, the addition of a precipitable, chromogenic substrate causes the formation of a colored dot on the solid phase which is visually read. The Dot-ELISA has been used extensively in the detection of human and veterinary protozoan and metazoan parasitic diseases, including amebiasis, babesiosis, fascioliasis, cutaneous and visceral leishmaniasis, cysticercosis, echinococcosis, malaria, schistosomiasis, toxocariasis, toxoplasmosis, trichinosis, trypanosomiasis and even ixodid tick infestation. The technique is rapid, easy to perform and interpret, reagent conservative, cost effective and field portable. In addition, the Dot-ELISA may be configured to detect antibodies or parasite antigen in either microtiter plates for large-batch testing or with dipsticks for small numbers of determinations. A slight modification of the Dot-ELISA procedure allows the determination of infection rates of vectors such as ticks and sandflies with parasites. 相似文献
63.
Michael Chatzidimopoulos Dimitris Papaevaggelou Athanassios Christos Pappas 《European journal of plant pathology / European Foundation for Plant Pathology》2013,137(2):363-376
The development of resistance to chemical control agents needs continuous monitoring in Botrytis cinerea. 790 isolates from lettuce and other vegetable crops were collected from six widely separated sites in Greece and tested for their sensitivity to 11 fungicides from nine unrelated chemical groups. 44 of the isolates exhibited multiple resistance to fenhexamid (hydroxyanilides), azoxystrobin and pyraclostrobin (QoI’s), boscalid (SDHI’s), cyprodinil and pyrimethanil (anilinopyrimidines), fludioxonil (phenylpyrroles), carbendazim (benzimidazoles) and iprodione (dicarboximides). Thirty per cent of such phenotypes were detected in an experimental glasshouse with lettuce crops, the third year after commencing fungicide applications. The average resistance factor (Rf) for mycelial growth to fenhexamid, pyraclostrobin, boscalid, cyprodinil and fludioxonil, was over 40, 1,000, 100, 700 and 50, respectively. Some strains with high resistance to anilinopyrimidines (14 %) or moderate to fludioxonil (7 %) were detected even in isolates collected from vegetable crops prior to commercial use of these fungicides in Greece. Isolates with fludioxonil moderate resistance and fenhexamid high resistance, were detected for the first time in Greece. The results suggested the high risk in chemical control of grey mould due to development of resistance to most fungicides with site-specific modes of action. Isolates with resistance to fluazinam (phenylpyridinamines) and to chlorothalonil (phthalonitriles) were not found. The inclusion of appropriate multi-site inhibitors like chlorothalonil in fungicide anti-resistance strategies was indispensable. 相似文献
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