The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
J. Lalitha - One of the best experts on this subject based on the ideXlab platform.
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cellular infiltration at skin lesions and draining lymph nodes of sheep infested with adult hyalomma anatolicum anatolicum ticks
Parasitology, 2005Co-Authors: D. K. V. Boppana, M. B. Manohar, Stephen K. Wikel, J. LalithaAbstract:Immunohistochemical analysis of skin and draining lymph nodes of sheep repeatedly infested with the ixodid tick Hyalomma anatolicum anatolicum were studied for different antigen-presenting cells and lymphocyte subpopulations. Infiltration of neutrophils, macrophages and lymphocytes adjacent to the tick bite site were observed. Skin biopsies showed significant increases in dermal infiltration of CD8 + and γδ + T cells at 72 h and 8 days after both primary and secondary Infestation. Infiltrations of MHC-II DR/DQ decreased at 72 h after tick Infestation, whereas significant increases were recorded for 8-day skin biopsies. CD1 + cellular infiltrations were observed during secondary Infestations at the dermis. Decreased ratios of CD4[ratio ]CD8 T cells and MHC-II[ratio ]CD1 antigen-presenting cells were observed in both Infestations compared to healthy skin biopsies. Ratios of αβ[ratio ]γδ T cells increased gradually during Infestation compared to uninfested skin. The regional lymph nodes from tick-infested sheep showed an increased CD8 + , γδ + T and CD1 + cellular infiltration compared to control lymph nodes. CD4 + T cells were decreased. There were no significant changes in CD45R + cellular infiltration either at skin lesions or regional lymph nodes.
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Cellular infiltration at skin lesions and draining lymph nodes of sheep infested with adultHyalomma anatolicum anatolicumticks
Parasitology, 2005Co-Authors: D. K. V. Boppana, M. B. Manohar, Stephen K. Wikel, J. LalithaAbstract:Immunohistochemical analysis of skin and draining lymph nodes of sheep repeatedly infested with the ixodid tickHyalomma anatolicum anatolicumwere studied for different antigen-presenting cells and lymphocyte subpopulations. Infiltration of neutrophils, macrophages and lymphocytes adjacent to the tick bite site were observed. Skin biopsies showed significant increases in dermal infiltration of CD8+and γδ+T cells at 72 h and 8 days after both primary and secondary Infestation. Infiltrations of MHC-II DR/DQ decreased at 72 h after tick Infestation, whereas significant increases were recorded for 8-day skin biopsies. CD1+cellular infiltrations were observed during secondary Infestations at the dermis. Decreased ratios of CD4[ratio ]CD8 T cells and MHC-II[ratio ]CD1 antigen-presenting cells were observed in both Infestations compared to healthy skin biopsies. Ratios of αβ[ratio ]γδ T cells increased gradually during Infestation compared to uninfested skin. The regional lymph nodes from tick-infested sheep showed an increased CD8+, γδ+T and CD1+cellular infiltration compared to control lymph nodes. CD4+T cells were decreased. There were no significant changes in CD45R+cellular infiltration either at skin lesions or regional lymph nodes.
Istvan Varga - One of the best experts on this subject based on the ideXlab platform.
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ectoparasite Infestations of red foxes vulpes vulpes in hungary
Veterinary Parasitology, 2003Co-Authors: T Sreter, Z Szell, Istvan VargaAbstract:A survey was carried out to investigate the ectoparasite Infestations of 100 red foxes (Vulpes vulpes) in Hungary. The overall prevalence of flea and tick Infestation was high (62 and 86% with the dominance of the anthropophil Pulex irritans and Ixodes ricinus), but the number of parasites was low to moderate. Felicola vulpis was not found in the present study, and the prevalence of Otodectes cynotis was only 2%. Based on prevalence (21%), mange lesion scores, and the negative correlation between lesion scores and condition of foxes, Sarcoptes Infestation should be considered as the most important parasitosis of foxes in Hungary. Besides the ecological significance of these parasites, the high overall prevalence of mange and anthropophil flea and tick Infestations of foxes and the appearance of these animals in the synanthropic environment as a result of the increasing population size, may result in the increasing incidence of flea, tick and accidental mite Infestation of man and domestic animals, and may enhance the transmission rate of some vector-borne diseases.
D. K. V. Boppana - One of the best experts on this subject based on the ideXlab platform.
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cellular infiltration at skin lesions and draining lymph nodes of sheep infested with adult hyalomma anatolicum anatolicum ticks
Parasitology, 2005Co-Authors: D. K. V. Boppana, M. B. Manohar, Stephen K. Wikel, J. LalithaAbstract:Immunohistochemical analysis of skin and draining lymph nodes of sheep repeatedly infested with the ixodid tick Hyalomma anatolicum anatolicum were studied for different antigen-presenting cells and lymphocyte subpopulations. Infiltration of neutrophils, macrophages and lymphocytes adjacent to the tick bite site were observed. Skin biopsies showed significant increases in dermal infiltration of CD8 + and γδ + T cells at 72 h and 8 days after both primary and secondary Infestation. Infiltrations of MHC-II DR/DQ decreased at 72 h after tick Infestation, whereas significant increases were recorded for 8-day skin biopsies. CD1 + cellular infiltrations were observed during secondary Infestations at the dermis. Decreased ratios of CD4[ratio ]CD8 T cells and MHC-II[ratio ]CD1 antigen-presenting cells were observed in both Infestations compared to healthy skin biopsies. Ratios of αβ[ratio ]γδ T cells increased gradually during Infestation compared to uninfested skin. The regional lymph nodes from tick-infested sheep showed an increased CD8 + , γδ + T and CD1 + cellular infiltration compared to control lymph nodes. CD4 + T cells were decreased. There were no significant changes in CD45R + cellular infiltration either at skin lesions or regional lymph nodes.
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Cellular infiltration at skin lesions and draining lymph nodes of sheep infested with adultHyalomma anatolicum anatolicumticks
Parasitology, 2005Co-Authors: D. K. V. Boppana, M. B. Manohar, Stephen K. Wikel, J. LalithaAbstract:Immunohistochemical analysis of skin and draining lymph nodes of sheep repeatedly infested with the ixodid tickHyalomma anatolicum anatolicumwere studied for different antigen-presenting cells and lymphocyte subpopulations. Infiltration of neutrophils, macrophages and lymphocytes adjacent to the tick bite site were observed. Skin biopsies showed significant increases in dermal infiltration of CD8+and γδ+T cells at 72 h and 8 days after both primary and secondary Infestation. Infiltrations of MHC-II DR/DQ decreased at 72 h after tick Infestation, whereas significant increases were recorded for 8-day skin biopsies. CD1+cellular infiltrations were observed during secondary Infestations at the dermis. Decreased ratios of CD4[ratio ]CD8 T cells and MHC-II[ratio ]CD1 antigen-presenting cells were observed in both Infestations compared to healthy skin biopsies. Ratios of αβ[ratio ]γδ T cells increased gradually during Infestation compared to uninfested skin. The regional lymph nodes from tick-infested sheep showed an increased CD8+, γδ+T and CD1+cellular infiltration compared to control lymph nodes. CD4+T cells were decreased. There were no significant changes in CD45R+cellular infiltration either at skin lesions or regional lymph nodes.
Brian P. Mccornack - One of the best experts on this subject based on the ideXlab platform.
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Remote Sensing Data to Detect Hessian Fly Infestation in Commercial Wheat Fields
Scientific Reports, 2019Co-Authors: Ganesh P. Bhattarai, Ryan B. Schmid, Brian P. MccornackAbstract:Remote sensing data that are efficiently used in ecological research and management are seldom used to study insect pest Infestations in agricultural ecosystems. Here, we used multispectral satellite and aircraft data to evaluate the relationship between normalized difference vegetation index (NDVI) and Hessian fly (Mayetiola destructor) Infestation in commercial winter wheat (Triticum aestivum) fields in Kansas, USA. We used visible and near-infrared data from each aerial platform to develop a series of NDVI maps for multiple fields for most of the winter wheat growing season. Hessian fly Infestation in each field was surveyed in a uniform grid of multiple sampling points. For both satellite and aircraft data, NDVI decreased with increasing pest Infestation. Despite the coarse resolution, NDVI from satellite data performed substantially better in explaining pest Infestation in the fields than NDVI from high-resolution aircraft data. These results indicate that remote sensing data can be used to assess the areas of poor growth and health of wheat plants due to Hessian fly Infestation. Our study suggests that remotely sensed data, including those from satellites orbiting >700 km from the surface of Earth, can offer valuable information on the occurrence and severity of pest Infestations in agricultural areas.
Diane Larsen - One of the best experts on this subject based on the ideXlab platform.
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Efficacy of afoxolaner against Ixodes scapularis ticks in dogs.
Veterinary Parasitology, 2014Co-Authors: Elizabeth B. Mitchell, John W. Mccall, S. Theodore Chester, Diane LarsenAbstract:Efficacy of afoxolaner, a novel isoxazoline insecticide/acaricide, against Ixodes scapularis was evaluated in a laboratory study. One day prior to treatment, beagle dogs (n=16) were infested with 50 unfed wild adult ticks. Repeat Infestations were performed weekly for four additional weeks. The number of live ticks remaining on each dog was determined 48 h after treatment and after each subsequent Infestation. A single oral treatment with a dose approaching the minimum effective dose of afoxolaner (2.5mg/kg) eliminated the pre-existing Infestations of I. scapularis ticks and controlled weekly re-Infestations, with efficacy between 98% and 100% recorded until Day 23 and 94% at Day 30.
