80,640 research outputs found

    Canine tick-borne pathogens in Cyprus and a unique canine case of multiple co-infections

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    Canine tick-borne pathogens such as Ehrlichia canis and Hepatozoon canis are widespread in the Mediterranean basin but have never been reported or investigated in Cyprus. We describe herein the presence of canine tick-borne pathogens in three dogs with clinical signs compatible with vector-borne diseases from Paphos area of Cyprus. Molecular and phylogenetic analysis revealed the presence of E. canis, Anaplasma platys, H. canis, Babesia vogeli and Mycoplasma haemocanis in Cyprus. One dog co-infected with E. canis, H. canis, B. vogeli and M. haemocanis is, to the best of our knowledge, the first report of this multiple co-infection in dogs. The tick-borne pathogens reported in the current study should be considered in the differential diagnoses in dogs exposed to ticks in Cyprus

    U.S. Motor Vehicle Industry Restructuring and Dealership Terminations

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    [Exerpt] As Chrysler and General Motors (GM) moved toward and into bankruptcy, they sought and received permission from the U.S. Bankruptcy Court to terminate about 2,000 contracts with auto dealers. Many of the dealers want their contracts reinstated and have sought relief from Congress to accomplish that goal. This report examines the changed economic landscape facing the auto sector, automaker arguments in favor of dealer reductions, and dealer counterpoints. It also highlights recent legislation introduced to address dealers\u27 concerns. Chrysler and GM have emerged from bankruptcy as significantly smaller companies, reflecting the end of a multiyear restructuring process for both companies. Chrysler is now controlled by the Italian carmaker, Fiat, while GM\u27s current majority owner is the U.S. Government. GM, which in 2008 operated 47 assembly, powertrain, and stamping facilities, is to operate 34 plants by the end of 2010 and 33 by 2012. The number of hourly employees will have declined from 78,000 onDecember 31, 2007 to 62,200 at end-2008, to an estimated 40,000 in 2010. By way of contrast, GM had 304,000 hourly workers in 1991. GM also discontinued one brand (Pontiac) and is to sell Hummer, Saab, and Saturn, and some percentage of its GM Europe operations, Opel and Vauxhall. The new Chrysler reduced its number of production facilities from 25 to 17 as part of its restructuring. The company employed 45,000 hourly U.S. employees in January 2008 and 27,000 in February 2009. For the first time, GM and Chrysler are not owned by private investors; rather, the UAW\u27s retiree health trust, the U.S. Treasury, and the Canadian government have taken ownership stakes in both companies. The auto dealership network, a critical intermediary between automakers and final consumers, has not escaped this turmoil. Auto dealers are independent businesses with contracts with the automakers Most of the approximately 20,000 U.S. auto dealers are family-owned and have been in business in their hometowns for decades. As with all stakeholders in GM and Chrysler, the dealer owners are faced with stark choices as the automakers downsize and seek a more competitive business model. As part of their restructuring, Chrysler cut 789 dealers immediately and GM is to eliminate more than 1,300 when the dealer\u27s contracts expire in October 2010. While dealer reductions of this magnitude would not have been possible in the normal course of business, the bankruptcy court approved both the Chrysler and GM requests to terminate dealerships as part of larger processes that have allowed a new GM and a new Chrysler to emerge from bankruptcy with many fewer assets and no liabilities. Of the roughly 2,000 dealers affected by these changes, many oppose the changes and have taken their battle against GM and Chrysler to Congress. Congressional hearings have been held and a number of bills to restore the dealer terminations have been introduced. On July 16, 2009, the House passed the Financial Services and General Government Appropriations Act, 2010 (H.R. 3170), which includes a committee-approved amendment offered by Representative LaTourette that would require automobile companies that receive federal funds and are partially owned by the federal government to reinstate agreements with franchise dealerships that had a valid dealer agreement prior to Chapter 11 proceedings. It would apply only to General Motors and Chrysler and would require them to reinstate the roughly 2,000 dealerships they have dropped or would like to drop as part of their cost cutting, downsizing, and overall restructuring. On July 17 the House Committee on Financial Services voted in support of H.Res. 591, requiring an Administration report on the work of the Auto Task Force, including decisions on dealerships. This report will be updated as necessary

    Proinflammatory response of canine trophoblasts to Brucella canis infection

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    Brucella canis infection is an important cause of late-term abortion in pregnant bitches. The pathophysiological mechanisms leading to B. canis–induced abortion are unknown, but heavily infected trophoblasts are consistently observed. As trophoblasts responses to other pathogens contribute to placental inflammation leading to abortion, the aim of the present study was to characterize the cytokine response of canine trophoblasts to B. canis infection. To achieve this, trophoblasts isolated from term placenta of healthy female dogs were infected with B. canis, culture supernatants were harvested for cytokine determinations, and the load of intracellular viable B. canis was determined at different times post-infection. Additionally, cytokine responses were assessed in non-infected trophoblasts stimulated with conditioned media (CM) from B. canis-infected canine monocytes and neutrophils. Finally, cytokine response and bacteria replication were assessed in canine placental explants infected ex vivo. B. canis successfully infected and replicated in primary canine trophoblasts, eliciting an increase in IL-8 and RANTES (CCL5) secretion. Moreover, the stimulation of trophoblasts with CM from B. canis-infected monocytes and neutrophils induced a significant increase in IL-8, IL-6 and RANTES secretion. B. canis replication was confirmed in infected placental explants and the infection elicited an increased secretion of TNF-α, IL-8, IL-6 and RANTES. This study shows that canine trophoblasts produce proinflammatory cytokines in response to B. canis infection and/or to stimulation with factors produced by infected monocytes and neutrophils. These cytokines may contribute to placental inflammation leading to abortion in B. canis-infected pregnant bitches.Fil: Fernandez, Andrea Giselle. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; ArgentinaFil: Hielpos, María Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; ArgentinaFil: Ferrero, Mariana Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; ArgentinaFil: Fossati, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Estudios Inmunológicos y Fisiopatológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Estudios Inmunológicos y Fisiopatológicos; ArgentinaFil: Baldi, Pablo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; Argentin

    Seroprevalence of toxocariasis in children aged 1-9 years in western Islamic Republic of Iran, 2003

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    We determined the seroprevalence of Toxocara canis infection in 544 children under 10 years randomly selected from urban and rural areas of Hamadan, An enzyme-linked immunosorbent assay was used for detection of antibodies to T. canis excretion - secretion antigens. Using a questionnaire, epidemiological factors associated with infection were examined, including age, sex, residence. Antibodies to T. canis were detected in 29 children (5.3%) and 19 children (3.5%) were categorized as borderline positive; thus together this gave a prevalence of toxocariasis of 8.8%. No significant differences were found in terms of sex, age and residence

    Two Species of Canine Babesia in Australia: Detection and Characterization by PCR

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    The haemoprotozoan Babesia canis has been recognized in Australia for many years, and a second, smaller species has recently been discovered. Amplification and sequencing of a partial region of the 18S small subunit ribosomal RNA (rRNA) gene enabled detection and characterization of the large and small canine babesiae of Australia for the first time. Isolates from northern Australia were genetically characterized to be 99% homologous to Babesia canis vogeli, confirming previous speculation about the subspecies of B. canis endemic to Australia. The partial 18S rRNA gene sequence amplified from isolates obtained in southeastern Australia was genetically identical to Babesia gibsoni, a species not previously known in Australia. The polymerase chain reaction (PCR) used was shown to be specific to Babesia and had a high sensitivity, detecting DNA at a parasitemia of approximately 0.0000027%. This study also reports the first known detection and characterization of B. canis DNA in Rhipicephalus sanguineus ticks using PCR

    Acute febrile illness is associated with Rickettsia spp infection in dogs

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    BACKGROUND: Rickettsia conorii is transmitted by Rhipicephalus sanguineus ticks and causes Mediterranean Spotted Fever (MSF) in humans. Although dogs are considered the natural host of the vector, the clinical and epidemiological significance of R. conorii infection in dogs remains unclear. The aim of this prospective study was to investigate whether Rickettsia infection causes febrile illness in dogs living in areas endemic for human MSF. METHODS: Dogs from southern Italy with acute fever (n = 99) were compared with case–control dogs with normal body temperatures (n = 72). Serology and real-time PCR were performed for Rickettsia spp., Ehrlichia canis, Anaplasma phagocytophilum/A. platys and Leishmania infantum. Conventional PCR was performed for Babesia spp. and Hepatozoon spp. Acute and convalescent antibodies to R. conorii, E. canis and A. phagocytophilum were determined. RESULTS: The seroprevalence rates at first visit for R. conorii, E. canis, A. phagocytophilum and L. infantum were 44.8%, 48.5%, 37.8% and 17.6%, respectively. The seroconversion rates for R. conorii, E. canis and A. phagocytophilum were 20.7%, 14.3% and 8.8%, respectively. The molecular positive rates at first visit for Rickettsia spp., E. canis, A. phagocytophilum, A. platys, L. infantum, Babesia spp. and Hepatozoon spp. were 1.8%, 4.1%, 0%, 2.3%, 11.1%, 2.3% and 0.6%, respectively. Positive PCR for E. canis (7%), Rickettsia spp. (3%), Babesia spp. (4.0%) and Hepatozoon spp. (1.0%) were found only in febrile dogs. The DNA sequences obtained from Rickettsia and Babesia PCRs positive samples were 100% identical to the R. conorii and Babesia vogeli sequences in GenBank®, respectively. Febrile illness was statistically associated with acute and convalescent positive R. conorii antibodies, seroconversion to R. conorii, E. canis positive PCR, and positivity to any tick pathogen PCRs. Fourteen febrile dogs (31.8%) were diagnosed with Rickettsia spp. infection based on seroconversion and/or PCR while only six afebrile dogs (12.5%) seroconverted (P = 0.0248). The most common clinical findings of dogs with Rickettsia infection diagnosed by seroconversion and/or PCR were fever, myalgia, lameness, elevation of C-reactive protein, thrombocytopenia and hypoalbuminemia. CONCLUSIONS: This study demonstrates acute febrile illness associated with Rickettsia infection in dogs living in endemic areas of human MSF based on seroconversion alone or in combination with PCR

    Survey of vector-borne agents in feral cats and first report of Babesia gibsoni in cats on St Kitts, West Indies

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    Background: As there is little data on vector-borne diseases of cats in the Caribbean region and even around the world, we tested feral cats from St Kitts by PCR to detect infections with Babesia, Ehrlichia and spotted fever group Rickettsia (SFGR) and surveyed them for antibodies to Rickettsia rickettsii and Ehrlichia canis. Results: Whole blood was collected from apparently healthy feral cats during spay/ neuter campaigns on St Kitts in 2011 (N = 68) and 2014 (N = 52). Sera from the 52 cats from 2014 were used to detect antibodies to Ehrlichia canis and Rickettsia rickettsii using indirect fluorescent antibody tests and DNA extracted from whole blood of a total of 119 cats (68 from 2011, and 51 from 2014) was used for PCRs for Babesia, Ehrlichia and Rickettsia. We could not amplify DNA of SFG Rickettsia in any of the samples but found DNA of E. canis in 5% (6/119), Babesia vogeli in 13% (15/119), Babesia gibsoni in 4% (5/119), mixed infections with B. gibsoni and B. vogeli in 3% (3/119), and a poorly characterized Babesia sp. in 1% (1/119). Overall, 10% of the 52 cats we tested by IFA for E. canis were positive while 42% we tested by indirect fluorescent antibody (IFA) for R. rickettsii antigens were positive. Conclusions: Our study provides the first evidence that cats can be infected with B. gibsoni and also indicates that cats in the Caribbean may be commonly exposed to other vector-borne agents including SFGR, E. canis and B. vogeli. Animal health workers should be alerted to the possibility of clinical infections in their patients while public health workers should be alerted to the possibility that zoonotic SFGR are likely circulating in the region
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