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1

Feline patent Toxoplasma-like coccidiosis among feral cats (Felis catus) in Doha city, Qatar and its immediate surroundings

100%
Abu-Madi M. A., Behnke J. M.
Acta Parasitologica
|
2014
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tom 59
|
nr 3
Doha city has a high feral cat population and studies of hospital records in Doha have shown that human toxoplasmosis also occurs. Clearly, there is a need to understand the role of cats as vectors of human toxoplasmosis in the city and as a first step we assessed the extent of patent Toxoplasma-like coccidial infections among feral cats. Oocysts in cat faeces were detected between June 2008 and April 2010, from a range of locations radiating out of the city centre in concentric semi circular/elliptic rings and by north, west and south divisions within each of the rings. In total 4,652 cats were sampled and overall prevalence of oocysts was 9.1%. Prevalence was 10.1% in the first summer, and then dropped to 8.4% in the following winter and further to 6.8% in the next summer before rising to 10.6% in the final winter of the study; this interaction between annual period and season was significant. There were also significant changes in prevalence across each of the consecutive months of the study, but no clear pattern was evident. Prevalence did not vary significantly by city sector and there was no difference in prevalence between the host sexes. We conclude therefore, that despite minor and significant perturbations, the prevalence of patent Toxoplasma-like coccidial infections among cats in Doha is remarkably stable throughout the year, across years and spatially within the city’s districts.
2

Apicomplexan parasites: environmental contamination and transmission

100%
Sinski E., Behnke J. M.
Polish Journal of Microbiology
|
2004
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tom 53
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nr Suppl.
The Apicomplexa are a diverse group of intracellular parasitic protists. The majority of species from the classes Coccidea, Haemosporea and Piroplasmea are responsible for widespread diseases of humans and domestic animals. Oocysts of these parasites can persist for long periods of time in the environment (i.e. in water, soil, on vegetation and other food resources), maintaining their infectivity even under harsh environmental conditions and therefore are important for dispersal and transmission to hosts. This review will address the biology, transmission patterns and survival in the environment of Cryptosporidium, Cyclospora and Toxoplasma species, the most common causes of human diseases.
3

The genetic diversity of protozoan Hepatozoon in local populations of bank vole in the Mazury lake district

81%
Alsarraf M., Welc-Faleciak R., Behnke J. M., Bajer A.
Annals of Parasitology
|
2013
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tom 59
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nr Suppl.
4

Mast cell, eosinophil and IgE antibody response of BALB-c mice to percutaneous infection with the canine hookworm Uncinaria stenocephala

80%
Gorski P., Krawiec M., Behnke J. M., Wedrychowicz H.
Acta Parasitologica
|
1999
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tom 44
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nr 3
The host-parasite relationship of the post-infection tissue resident and migratory stages of Uncinaria stenocephala are areas, which have received very little attention to-date. In the present experiments cellular and serum antibody responses were evaluated in mice infected percutaneously with infective larvae of the nematode. Significant eosinophil infiltration was observed in the skin at the site of infection. The number of these cells increased significantly (p<0.01) and dramatically at the site of the first infection (abdomen) within 24 h of exposure to the second dose of larvae which was administered at a different site (back). A clear IgE response of mice to somatic and surface antigens of L3 was observed. There was no further increase in IgE to the somatic antigen preparations following challenge, but a significantly higher concentration of IgE reactivity to surface antigens was detected 14 days after challenge. A short-lived, IgM, IgG and IgA response to the somatic antigens was also detected.
5

First evidence of Ehrlichia sp. in wild Microtus arvalis from Poland

80%
Bajer A., Behnke J. M., Pawelczyk A., Sinski E.
Acta Parasitologica
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1999
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tom 44
|
nr 3
We examined a total of 73 Microtus arvalis, 168 Clethrionomys glareolus and 17 Apodemus flavicollis trapped in the Mazury Lakes district of North-Eastern Poland, in the spring, summer and autumn of 1998. Three M. arvalis, (2 in summer and 1 in autumn) carried Ehrlichia sp. (overall prevalence = 4.1%), whereas infection was not detected in the other rodent species. We hypothesize that Ixodes ricinus (the most common tick in the region) with which the animals were heavily infested, constitutes the likely natural vector for this pathogen and that M. arvalis are its natural reservoir.
6
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Abundance of wild rodents, ticks and environmental risk of Lyme borreliosis: a longitudinal study in an area of Mazury Lakes District of Poland

80%
Sinski E., Pawelczyk A., Bajer A., Behnke J. M.
Annals of Agricultural and Environmental Medicine
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2006
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tom 13
|
nr 2
The results of a longitudinal epidemiological survey in two contrasting habitats in an area of the Mazury Lakes district of Poland indicate that both host and vector (Ixodes ricinus) densities, may be the most important risk factors for the tick-transmitted spirochetes of Borrelia burgdirferi s.l. However, the results also highlight that even related host species, such as the wild rodents Apodemus flavicollis and Clethrionomys glareolus that share the same habitat, can show quite different dynamics of tick infestation. We provide evidence that the woodland populations of A. flavicollis and C. glareolus are more frequently infested with larvae than nymphs, and more frequently with both stages than M. arvalis in the neighbouring open fallow lands. The prevalence of infestation with larvae varied from 92% for A. flavicollis, and 76% for C. glareolus to 37% for M. arvalis. Other factors, such as population age structure and sex, were also shown to impact on tick densities on hosts at particular times of the year and hence on the zoonotic risk. Moreover, particular species of rodents from different habitats, A. flavicollis (woodlands) and Microtus arvalis (fallow lands) carry infected immature I. ricinus ticks more frequently than C. glareolus voles (woodlands). Thus, the relative contribution of each species to the cumulative reservoir competence differs among species living in the woodland habitats and in relation to voles living in the fallow lands. It follows, therefore, that any factor which reduces the relative density of A. flavicollis in comparison to other hosts in the wild rodent community, will reduce also the risk of human exposure to Lyme borreliosis spirochetes.
7
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Tajniki życia mikropasożytów myszy kolczystych (Acomys dimidiatus) z czterech górskich dolin w okolicach St. Katherine, góry Synaj, Egipt

71%
Bajer A., Behnke J. M., Harris P. D., Bednarska M., Barnard C. J.
Wiadomości Parazytologiczne. Suplement
|
2004
|
tom 50
8
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Wspolwystepownie Cryptosporidium parvum, Giardia spp. i helmintow w populacjach drobnych gryzoni

71%
Bajer A., Behnke J. M., Bednarska M., Kulis K., Sinski E.
Wiadomości Parazytologiczne
|
2004
|
tom 50
|
nr 2
307-315
9

Seroprevalence and associated risk factors for Toxoplasma gondii infections among urban poor communities in Peninsular Malaysia

71%
Sahimin N., Hanapi I. R. M., Nurikhan Z. A., Behnke J. M., Zain S. N. M.
Acta Parasitologica
|
2021
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tom 66
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nr 2
10

Mapping genes for resistance to gastrointestinal nematodes

71%
Behnke J. M., Lowe A., Menge D., Iraqi F., Wakelin D.
Acta Parasitologica
|
2000
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tom 45
|
nr 1
GI nematodes are most commonly controlled by chemotherapy. Anthelmintic efficacy is decreasing as drug resistance becomes widespread and other approaches are needed. Knowledge of protective immunity against GI parasites is important for the development of vaccine strategies. Success in this field is presently limited, and parasites have many ways of evading immunity. An alternative approach is selection and breeding of genetically resistant stock. This requires definition of the genes responsible and identification of markers for selection. It is well known that resistance to infection is variable within host species but little progress has been made in defining the genes responsible. We describe an approach to identifying the genes responsible for resistance of mice to Heligmosomoides polygyrus as a model for identification of homologous genes in domestic animals. F2 and eventually F6 generations from crosses between resistant SWR and susceptible CBA strains are being phenotyped for parasitological and immunological traits. Microsatellite mapping will then identify the chromosomal locations and eventually the specific loci concerned. Data from this project will facilitate breeding programmes and lead to a greater understanding of the roles of specific genes and their products in particular resistance mechanisms.
11

Long - term spatiotemporal stability and dynamic changes in the haemoparasite community of bank voles (Myodes glareolus) in NE Poland

61%
Bajer A., Welc-Faleciak R., Bednarska M., Alsarraf M., Behnke-Borowczyk J., Sinski E., Behnke J. M.
Annals of Parasitology
|
2013
|
tom 59
|
nr Suppl.
12
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Phylogenetic analyses of Bartonella sp. (Bacteria) of rodents from four separated valleys in Sinai Mountains (Egypt)

61%
Alsarraf M., Mohallal E. M., Kwiatowski J., Mierzejewska E. J., Welc-Faleciak R., Behnke J. M., Bajer A.
Annals of Parasitology
|
2016
|
tom 62
|
nr Suppl.
13

A preliminary biological and molecular characterization of Babesia sp. in the Massive Sinai, Egypt

51%
Alsarraf M., Bajer A., Welc-Faleciak R., Bednarska M., Mohallal E., Zalat S., Gilbert F., Behnke J. M.
Annals of Parasitology
|
2013
|
tom 59
|
nr Suppl.
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