We examined 115 hunter-killed mourning doves (Zenaida macroura) from 4 states (Arizona, Pennsylvania, South Carolina, and Tennessee, U.S.A.) in 1998 and 1999 to investigate geographical variation in the prevalence and intensity of intestinal helminth infections. Four intestinal helminth species were identified: Killigrewia delafondi, Ornithostrongylus crami, Ascaridia columbae, and Capillaria o...

Background Malaria and helminths share the same geographical distribution in tropical Africa. Studies of the interaction of helminth and malaria co-infection in humans have been few and are mainly epidemiological, with little information on cellular immune responses. This study aimed to determine Cytokine profiles among patients co-infected with Plasmodium falciparum malaria and soil borne helm...

Immunity to intestinal helminth infections has been well studied, but the mechanism of helminth killing prior to expulsion remains unclear. Here we identify epithelial-cell-derived phospholipase A2 group 1B (PLA2g1B) as a host-derived endogenous anthelmintic. PLA2g1B is elevated in resistant mice and is responsible for killing tissue-embedded larvae. Despite comparable activities of other essen...

Parasitological studies on helminths of amphibians in South America have increased in the past few years. Here, we present a list with summarized data published on helminths of South American amphibians from 1925 to 2012, including a list of helminth parasites, host species, and geographic records. We found 194 reports of helminths parasitizing 185 amphibian species from eleven countries: Argen...

Helminth parasites infect almost one-third of the world's population, primarily in tropical regions. However, regions where helminth parasites are endemic record much lower prevalences of allergies and autoimmune diseases, suggesting that parasites may protect against immunopathological syndromes. Most helminth diseases are spectral in nature, with a large proportion of relatively asymptomatic ...

Two helminth communities, comprising seven species in Ochotona princeps and five in O. collaris, were studied for site specificity and interspecific interactions. There were no cases of competitive exclusion, but four species pairs were found concurrently more often than by chance, possibly due to similarities in life cycles. One case of interactive site segregation was demonstrated. There was ...

SOME SIMILARITIES BETWEEN IMMUNE RESPONSE DURING PREGNANCY AND CHRONIC HELMINTH INFECTIONS EXIST Pregnancy is a unique immunological status with different hormonal and immunological alterations. Pregnancy hormones (including progesterone, glucocorticoids, estradiol, and estriol) increase over the course of pregnancy and significantly modulate the immunological shift that occurs over the three t...

In the present study, the potency and immunogenicity of the inactivated bivalent vaccine of Newcastle disease (ND) and avian influenza (AI) produced by Razi institute in Iran were compared with a similar imported vaccine administered by standard methods to specific-pathogen-free (SPF) chicken. A total of 150 twenty-one-day-old SPF chickens were used for evaluating Razi and imported inactivated ...

parasitic infections of rodents can compromise scientific research as well as the health of the animals and humans. based on previous studies, infection rate of parasitic helminths is different in various regions of iran. the current survey was aimed to determine endoparasitic helminths infection in 138 trapped rodents of kermanshah county, iran. mice and rats were trapped using metal snares fr...

background: the aim was to study the gastro-intestinal helminths of stray dogs of garmsar, sem­nan province, central iran, and its impacts on human health and animal production. methods : during 2006, the alimentary tracts of 50 stray dogs at necropsy, selected from villages around garmsar, were removed, and examined for helminth infections. subsequently helminths were collected from the conten...