Many scientists have worked out on the host-parasite relatiosship. The cestode parasites were attached mostly in the stomach and duodenal mucosa. Heavy infection with this cestode parasites caused inflammation, congestion(Khadap,2009). Lytocestus indicus is a caryophyllaeid cestode of fresh water fishes. During the present study on the helminth parasites of the fresh water fishes of Warangal, C...

Parasitic helminths reside in immunologically-exposed extracellular locations within their hosts, yet they are capable of surviving for extended periods. To enable this survival, these parasites have developed complex and multifaceted mechanisms to subvert or suppress host immunity. This review summarises current knowledge of immune modulation by helminth parasites of ruminants and the parasite...

Five vaal ribbok, culled in the Bontebok National Park during December 1979, were examined for helminth and arthropod parasites. Ten nematode species, a louse and 2 tick species were recovered and there was also evidence of previous infestation by the larvae of 2 oestrid flies. The parasite burdens of the vaal ribbok are compared with those of sympatric bontebok and springbok culled at the same...

Intravitreal infection of guinea pigs with second-stage larvae of Toxocara canis and second- and fourth-stage larvae of Ascaris suum induced intraocular IgE antibodies and a dense eosinophil infiltration in the anterior chamber and throughout the uveal tract. The eosinophil infiltrate began within 1 day after infection and persisted for as long as 51 days. By day 12 after intravitreal infection...

Helminth parasites remain one of the most common causes of infections worldwide, yet little is still known about the immune signaling pathways that control their expulsion. C57BL/6 mice are chronically susceptible to infection with the gastrointestinal helminth parasite Heligmosomoides polygyrus. In this article, we report that C57BL/6 mice lacking the adapter protein MyD88, which mediates sign...

Several protozoan and helminth parasites can affect the central nervous system. In some cases the parasite may have a tropism for the central nervous system (CNS) and this represents the primary affect of the pathogen. In many cases, though, the pathogen does not exhibit a specific tropism for the CNS and affects many other organs and tissues. However, the symptoms associated with the invasion ...

During a long term of road survey for detection of the zoonotic helminthes in carnivores, a male Vulpes vulpes was naturally found infected by Dioctophyme renale in Caspian Sea littoral in Iran. Since the parasite transmission usually occurs through consumption of fish and other accidental food items, investigation of the worm amongst fish-eating animals in the areas with potential circulation ...

The genomes of more than 20 helminths have now been sequenced. Here we perform a meta-analysis of all sequenced genomes of nematodes and Platyhelminthes, and attempt to address the question of what are the defining characteristics of helminth genomes. We find that parasitic worms lack systems for surface antigenic variation, instead maintaining infections using their surfaces as the first line ...

Lagochilascariasis is a parasitic disease caused by a helminth of the order Ascaroidea, genus Lagochilascaris that comprises 6 species, among which only Lagochilascaris minor Leiper, 1909, is implicated in the human form of the disease. It is remarkable that the majority of cases of human lagochilascariasis in the Americas have been reported in Brazil. The natural definitive hosts of this paras...

The patterns and mechanisms by which biological diversity is associated with parasite infection risk are important to study because of their potential implications for wildlife population's conservation and management. Almost all research in this area has focused on host species diversity and has neglected parasite diversity, despite evidence that parasites are important drivers of community st...