nematode infections

..operating during infection and the establishment of parasitic relationships that are relevant to other parasitic nematode infections of human significance. Public Health Relevance: This Public Health Relevance is not available.

..This project will also provide insight into the basic molecular mechanisms operating during infection and the establishment of parasitic relationships that are relevant to other parasitic nematode infections of human significance.

..will provide leads for the development of novel anthelmintics for the control of important human parasitic nematode infections. The results of Phase I identified parasitic nematode orthologs of NRs that have essential functions in C...

..by applicant): Worldwide, over 1 billion people suffer from debilitating diseases caused by parasitic nematode infections. Parasitic nematodes utilize secretory products to modulate the host immune system in order to establish ..

..IgG1 in effective against bacterial, viral and nematode infections due to its ability to active complement and to bind to FcRgammaIII on macrophages, neutrophils, mast cells ..

..While Th2 cells are associated with nematode infections; however, it is not clear how Th2 cells develop from naive CD4+ T cells in response to infection...

..Intestinal parasitic nematode infections, which have a significant effect on the nutritional status of the host, in general, and on glucose ..

..Intestinal parasitic nematode infections, which have a significant effect on the nutritional status of the host, in general, and on glucose ..

DESCRIPTION (provided by applicant): Intestinal nematode infections are a major cause of morbidity and mortality throughout the world, affecting up to one quarter of the world's population...

DESCRIPTION (provided by applicant): Intestinal nematode infections are a major cause of morbidity and mortality throughout the world, affecting up to one quarter of the world's population...

..ovis was 97.7 per cent. The mean (se) systemic area under the curve (AUC) was 56.0 (26.2) ng/day/ml and the mean residence time was 5.3 (1.0) days, but there were wide variations between individual sheep...

..To prevent high levels of re-infection during the season of the long rains (April to June), it is recommended that, during this season, a second treatment be given 5-6 weeks after the first one or at the start of the dry season...

..These results suggest lack of knowledge about worm-control strategies and anthelmintic use or unwillingness to apply such knowledge...

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..chirata administered as crude powder (CP), CAE and CME at the dose of 3 g/kg to sheep naturally infected with mixed species of gastrointestinal nematodes, showed a significant reduction in egg per gram of faeces...

..0% on day 60. On farm B, on the same days, they were 95.4, 84.9, and 69.4%, respectively. In the course of the two trials, eprinomectin was well tolerated by all the animals with no adverse reactions following the topical treatment...

..They contribute to the spread of the faecal material on the pasture and allow the larval death as a consequence of drying...

..A trend to slower development of resistance where a proportion of lambs were left untreated at each drench suggests further work on this aspect of management of resistance is warranted...

..1% reduction for H. contortus, and 100% for Cooperia sp. in the area with fungi. In the case of Trichostrongylus sp. no reduction was observed, when compared to the control group...

..The comparison of selected resistant rams to selected susceptible ones and not to unselected controls gave more rapid information about the tendency of the regulation of the communities of nematode parasites...

..A breed difference in resistance to GI parasites was also observed in older ewes. In both breeds, an age effect on the FEC was observed with younger ewes having greater FEC than older ewes...

..Results obtained in this study confirm the epidemiological importance of the over-wintering L(3) generation as the initial source of the animal's infection and the origin of the annual resumption of pasture contamination cycles...

..5% and 92.6% on Day +21. CONCLUSION: The efficacy of Fasimec' Cattle and Fasimec Sheep was at least equal to that of currently registered products (with the same active ingredients) used to control these parasites...

..Further, the possibility of a test returning a false-negative result is raised, indicating that even an efficacy estimated > or =95% may not guarantee the absence of resistant parasites...

..This simplified, repeated treatment method should be investigated further since it is quicker, and this could make it possible to test larger farm samplings...

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..The high prevalence of resistance to multiple anthelmintics emphasizes the need for reexamination of nematode control practices...

..12, and 0.11, 0.22 and 0.12. Based on segregation of infection, larger heritabilities and maternal environment effects that declined after weaning, the summer natural infection was probably the best model for assessing genetic variation...

..In the dry season there was a decrease in both of these traits, which were intimately linked to the quality of available forage under tropical conditions...

..In conclusion, legume forages have the potential to contribute to the control of abomasal but not small intestine nematode parasites in finishing lamb systems...

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..Pasture larval numbers on the two fungal group plots were also much lower than on the control plot...

..0%, 100.0% against Haenmonchus spp., Trichostrongylus spp., Oesophagostomunm spp., Strongyloides spp. and Trichuris spp. respectively, on day 12. Extracts of S. mombin could find application in the control of helminths in livestock...

..efficacy of a single dose of the 10% long acting (LA) injectable formulation of moxidectin on nematode infections in calves, was evaluated...

..A further study is needed to formulate appropriate and cost-effective strategies for the control of gastro-intestinal nematode parasites in pigs in Burkina Faso...

..In this paper faecal larval cultures and pasture larval counts used for herd health monitoring of nematode infections are discussed.

..0 eggs/g feces). There were observed differences in prevalence of parasite' species between packs. Present paper is first such an investigation in northeastern Poland...

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..Drug rotation was performed every 12 months or more by 84.2% of farmers. Anthelmintics used were: macrociclic lactones (47.4%), BZD (39.5%), levamisol (10.5%) and 1 farmer used closantel...

..Simultaneous administration of levamisole and ivermectin pour-on anthelmintics to cattle is likely to control both ML-resistant C. oncophora and stages of Ostertagia spp that are not controlled by levamisole alone...

..The overall outlook regarding anthelmintic resistance in cattle is bleak unless the need for integrated and long-term research activities is acted upon soon...

..This indicates that moves to new pastures in late summer and autumn delays the onset of inhibition...

..Although chicory grazing did not affect ewe nematode egg excretion, it resulted in lower egg counts in lambs and improved their liveweight gains to the same level as those deriving from drenched ewes...

..Additionally, pastures were of good quality for the lambs during the finishing period, so they grew at optimal rates as far as the farmers were concerned...

..This indicated that the point is an important source of infection for sheep, especially during the dry season when other pastures are non-infective...

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..Both farmer co-operators were encouraged with these results and consider that biological control of nematode parasites in their flocks, using D. flagrans, is of practical value...

..flagrans as a biological control agent of nematode parasites, is a promising alternative to nematode parasite control of small ruminants in Malaysia, where anthelmintic resistance is now a major problem...

..Refinements in methods for rapid egg isolation may improve egg differentiation on the basis of lectin staining, which could be undertaken by flow cytometry or microscopy...

..Thus, real-time PCR was found to be suitable as a speedy and reliable diagnostic tool for the assessment of gastrointestinal nematode infections of ruminants in the field.

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..In all the goats, Haemonchus contortus was the predominant nematode recovered. These results indicate that UMB had significant effects in the control of GI nematode parasitism and enhanced growth of the young goats...

..Total immune reactivity and anti-inflammatory cytokine production relate inversely. Our data suggest that gut nematodes are important mediators of immunoregulation...

..These findings are discussed with reference to their relevance for strategic control of GI parasites in cattle in communal grazing areas of Zimbabwe...

..and Trichostrongylus spp. Other nematodes were Cooperia spp., Bunostomum spp. and Oesophagostomum spp...

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..These results indicate that a reduction in the contamination of pasture with nematode eggs before the rains could result in pastures carrying fewer larvae and thus form the basis of effective worm control programmes for cattle...

..3, 6 and 8 after turn-out, with or without a move to clean pasture, were highly effective in controlling nematode infections for most of the season...

..In conclusion, the rotation control strategy showed promising results, whereas the strategic feeding was poor from a parasite control standpoint...

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..By removing the effect of parasites, cattle can grow without the physiological constraints that gastrointestinal parasites place on appetite, digestion, nutrient utilization, and general well being...

..This investigation showed that parasite transmission occurs continuously throughout the year for nematode parasites of reindeer in northern Finland...

..35 kg/day. The differences in live weight gain and condition score over 28 days post-treatment were significant (P < 0.05) in both cows and heifers, in favour of the treated animals...

..Steps should be taken to prevent its further spread and to avoid the development of a situation as on numerous commercial sheep farms in South Africa where resistance is very common...

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