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    Tytuł:
    Prevalence of infections and co-infections with 6 pathogens in Dermacentor reticulatus ticks collected in eastern Poland
    Autorzy:
    Zając, Violetta
    Wójcik-Fatla, Angelina
    Sawczyn, Anna
    Cisak, Ewa
    Sroka, Jacek
    Kloc, Anna
    Zając, Zbigniew
    Buczek, Alicja
    Dutkiewicz, Jacek
    Bartosik, Katarzyna
    Powiązania:
    https://bibliotekanauki.pl/articles/989947.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    dermacentor reticulatus
    co-infections
    tbe virus
    anaplasma phagocytophilum
    rickettsia raoultii
    borrelia burgdorferi sensu
    lato
    babesia spp.
    toxoplasma gondii
    Opis:
    Occurrence of co-infections with various pathogens in ixodid ticks creates a risk of increased severity of tick-borne diseases in humans and animals exposed to bite of the ticks carrying multiple pathogens. Accordingly, co-infections in ticks were subject of numerous analyses, but almost exclusively with regard to Ixodes ricinus complex whereas potential tick vectors belonging to other genera were much less studied. Taking into consideration the role of Dermacentor reticulatus in the transmission of various pathogens, we carried out for the first time the comprehensive statistical analysis of co-infections occurring in this tick species. An attempt was made to determine the significance of the associations between 6 different pathogens occurring in D. reticulatus (Tick-borne encephalitis virus = TBEV, Anaplasma phagocytophilum, Rickettsia raoultii, Borrelia burgdorferi s. l., Babesia spp., Toxoplasma gondii), using 2 statistical methods: determination of Odds Ratios (ORs) and the Fisher’s exact test. 634 questing Dermacentor reticulatus ticks (370 females and 264 males) were collected in 2011–2013 by flagging the lower vegetation in 3 localities in the area of Łęczyńsko-Włodawskie Lakeland, situated in the Lublin region of eastern Poland. The presence of individual pathogens was detected by PCR. Ticks were infected most often with Rickettsia raoultii (43.8%), less with TBEV (8.5%), and much less with Babesia spp., Toxoplasma gondii, Borrelia burgdorferi s.l., and Anaplasma phagocytophilum (2.5%, 2.1%, 1.6% and 1.1%, respectively). The locality-dependent variability proved to be significant for TBEV (c2=11.063; P=0.004) and Toxoplasma gondii (c2=11.298; P=0.0035), but not for other pathogens. Two hundred seventy (42.6%) of the examined ticks were infected only with a single pathogen, and 54 (8.5%) showed the presence of dual co-infections, each with 2 pathogens. The most common were dual infections with participation of Rickettsia raoultii (7.41%); next, those with participation of the TBEV (5.21%), Toxoplasma gondii (1.58%), Borrelia burgdorferi s.l. (1.26%), Anaplasma phagocytophilum (0.95%), and Babesia spp. (0.63%). On the total number of 15 possible associations, in 9 cases co-infections occurred whereas in 6 cases they were not detected. The most noteworthy were positive co-infections with the participation of TBEV, which proved to be weakly significant (0.05
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2017, 24, 1
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of the efficiency of two commercial kits - ELFA and Western blot in estimating the phase of Toxoplasma gondii infection in pregnant women
    Autorzy:
    Sroka, Jacek
    Wójcik-Fatla, Angelina
    Zając, Violetta
    Sawczyn, Anna
    Cisak, Ewa
    Karamon, Jacek
    Dutkiewicz, Jacek
    Bojar, Iwona
    Powiązania:
    https://bibliotekanauki.pl/articles/991156.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    toxoplasmosis
    pregnant women
    seroprevalence
    antibodies
    igg
    igm
    elfa
    western blot
    avidity
    correlation of serologic tests
    Opis:
    Sera of 89 pregnant women were selected according to the results of ELFA IgM, IgG and avidity IgG, and tested with commercial tests IgM, IgG and avidity IgG Western Blot (WB) to compare the efficacy of both techniques in determining the phase of T. gondii infection. In total, 81 of 89 tested sera (91.0%) were classified as positive, both in the ELFA and WB tests for the presence of anti-Toxoplasma antibodies of class IgG, indicating a past infection, while the prevalence of anti-Toxoplasma positive reactions associated with the antibodies of class IgM indicating a recent infection was much lower – 31.5% and 20.2%, respectively. Sera of 81 women were also tested in the ELFA and WB tests for avidity, e.g. ability of forming high-molecular IgG antibody complexes. Low or medium results in these tests (in this study all classified as low), indicating a recent infection, were detected by ELFA and WB in 22.2% and 45.7% of the total examined samples, respectively. The Spearman’s rank test for correlation, performed for recognition of quantitative data of the ELFA and WB tests (index, units or points), revealed a highly significant correlation between the ELFA and WB tests for homologous classes of antibodies, both for IgM and IgG (p<0.00001). In contrast, the ELFA and WB tests for detection of anti-Toxoplasma IgM antibodies were not correlated with the ELFA and WB tests for detection of anti-Toxoplasma IgG antibodies (p>0.05), except for the WB test for IgM antibodies, which showed a significant correlation with the ELFA test for IgG antibodies (p<0.01). A highly significant negative correlation between the ELFA and WB test for IgM antibodies and ELFA and WB tests for IgG avidity was demonstrated (p<0.01), except for a relationship between the WB test for IgM and WB for avidity, which was not significant. Such negative correlations are theoretically expected, as strong complexes with the participation of IgG antibodies are absent in the early phase of toxoplasmosis when early antibodies of IgM class are present. Summarizing, this study indicates the high usefulness of the commercial ELFA and WB tests in serodiagnostics of toxoplasmosis in pregnant women. Special attention should be paid to parallel detection of IgM antibodies and low values in the ELFA and WB tests for IgG avidity, which indicates a recent infection which may be associated with a clinical form of congenital toxoplasmosis and damage to the foetus.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2016, 23, 4
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Streptococcus suis: a re-emerging pathogen associated with occupational exposure to pigs or pork products. Part I - epidemiology
    Autorzy:
    Dutkiewicz, Jacek
    Sroka, Jacek
    Zając, Violetta
    Wasiński, Bernard
    Cisak, Ewa
    Sawczyn, Anna
    Kloc, Anna
    Wójcik-Fatla, Angelina
    Powiązania:
    https://bibliotekanauki.pl/articles/991187.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    streptococcus suis
    pigs
    humans
    carriage
    disease
    epidemiology
    treatment
    prevention
    Opis:
    Streptococcus suis (ex Elliot 1966, Kilpper-Bälz & Schleifer 1987) is a facultatively anaerobic Gram-positive ovoid or coccal bacterium surrounded by a polysaccharide capsule. Based on the antigenic diversity of the capsule, S. suis strains are classified serologically into 35 serotypes. Streptococcus suis is a commensal of pigs, commonly colonizing their tonsils and nasal cavities, mostly in weaning piglets between 4–10 weeks of age. This species occurs also in cattle and other mammals, in birds and in humans. Some strains, mostly those belonging to serotype 2, are also pathogenic for pigs, as well as for other animals and humans. Meningitis is the primary disease syndrome caused by S. suis, both in pigs and in humans. It is estimated that meningitis accounted for 68.0% of all cases of human disease reported until the end of 2012, followed by septicaemia (including life-threatening condition described as ‘streptococcal toxic shock-like syndrome’ – STSLS), arthritis, endocarditis, and endophthalmitis. Hearing loss and/or vestibular dysfunction are the most common sequelae after recovery from meningitis caused by S. suis, occurring in more than 50% of patients. In the last two decades, the number of reported human cases due to S. suis has dramatically increased, mostly due to epidemics recorded in China in 1998 and 2005, and the fulminant increase in morbidity in the countries of south-eastern Asia, mostly Vietnam and Thailand. Out of 1,642 cases of S. suis infections identified between 2002–2013 worldwide in humans, 90.2% occurred in Asia, 8.5% in Europe and 1.3% in other parts of the globe. The human disease has mostly a zoonotic and occupational origin and occurs in pig breeders, abattoir workers, butchers and workers of meat processing facilities, veterinarians and meat inspectors. Bacteria are transmitted to workers by close contact with pigs or pig products, usually through contamination of minor cuts or abrasions on skin of hands and/or arms, or by pig bite. A different epidemiologic situation occurs in the Southeast Asian countries where most people become infected by habitual consumption of raw or undercooked pork, blood and offal products in the form of traditional dishes. Prevention of S. suis infections in pigs includes vaccination, improvement in pig-raising conditions, disinfection and/or fumigation of animal houses, and isolation of sick animals at the outbreak of disease. Prevention of human infections comprises: protection of skin from pig bite or injury with sharp tools by people occupationally exposed to pigs and pig products, prompt disinfection and dressing of wounds and abrasions at work, protection of the respiratory tract by wearing appropriate masks or repirators, consulting a doctor in the case of febrile illness after exposure to pigs or pork meat, avoidance of occupations associated with exposure to pigs and pork by immunocompomised people, avoidance of consumption of raw pork or pig blood, adequate cooking of pork, and health education.
    Źródło:
    Annals of Agricultural and Environmental Medicine; 2017, 24, 4
    1232-1966
    Pojawia się w:
    Annals of Agricultural and Environmental Medicine
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prevalence of tick-borne pathogens at various workplaces in forest exploitation environment
    Występowanie patogenów przenoszonych przez kleszcze na różnych stanowiskach pracy w środowisku eksploatacji lasu
    Autorzy:
    Cisak, Ewa
    Wójcik-Fatla, Angelina
    Zając, Violetta
    Dutkiewicz, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/2166205.pdf
    Data publikacji:
    2014-12-05
    Wydawca:
    Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
    Tematy:
    Anaplasma phagocytophilum
    Babesia microti
    Borrelia burgdorferi
    kleszcze Ixodes ricinus
    leśnictwo
    miejsca pracy
    Ixodes ricinus ticks
    forestry
    workplaces
    Opis:
    Background: The objective of the study was the evaluation of the infection of ticks with pathogenic microorganisms at various workplaces (timber acquisition, forest growing, forest cultivation, forest protection). Material and Methods: Eight hundred sixty one Ixodes ricinus ticks collected from 4 workplaces were examined for the presence of Borrelia burgdorferi, Anaplasma phagocytophilum and Babesia microti by polymerase chain reaction (PCR). Then, a comparative analysis of the relative density and infection of ticks at individual workplaces was done. In the statistical analysis, Chi² test, and Pearson’s test for correlation were applied. Results: The differences in infection (15.9–50%) of ticks with B. burgdorferi between the examined workplaces were highly significant, with the highest percentage observed at forest growing. The percentages of infection of ticks with A. phagocytophilum at individual workplaces ranged from 1.1–3.7%, and differences were statistically insignificant. The percentages of infections of ticks with Babesia microti at individual workplaces fluctuated from 3.6–4.4% and differences were also insignificant. Co-infections of ticks with 2 or 3 pathogens were rare. Conclusions: Co-infections with B. burgdorferi and B. microti showed a significant relationship with the workplaces, while those with B. burgdorferi and A. phagocytophilum did not show such a dependence. No significant positive correlation was found between the relative density of ticks and the frequencies of infections with B. burgdorferi, A. phagocytophilum and B. microti. Med. Pr. 2014;65(5):575–581
    Wstęp: Celem badań była ocena zakażenia kleszczy występujących na różnych miejscach i stanowiskach pracy w leśnictwie (uzyskiwanie drewna, hodowla lasu, uprawa lasu, ochrona lasu) patogenami przenoszonymi przez kleszcze. Materiał i metody: Z 4 miejsc pracy zebrano 861 kleszczy Ixodes ricinus, które zbadano na obecność Borrelia burgdorferi, Anaplasma phagocytophilum i Babesia microti przy pomocy łańcuchowej reakcji polimerazy (polymerase chain reaction – PCR). Następnie przeprowadzono analizę porównawczą względnej gęstości kleszczy i ich zakażenia w poszczególnych miejscach pracy. W analizie statystycznej zastosowano test Chi² i test korelacji Pearsona. Wyniki: Różnice w zakażeniach kleszczy B. burgdorferi (15,9–50%) zebranych z różnych miejsc pracy były statystycznie wysoce istotne, a najwyższe zakażenie kleszczy zaobserwowano w miejscu hodowli lasu. Odsetki zakażeń kleszczy A. phagocytophilum i B. microti na poszczególnych miejscach pracy wahały się odpowiednio od 1,1% do 3,7% i od 3,6% do 4,4%, a różnice były nieistotne statystycznie. Współzakażenia kleszczy 2 lub 3 patogenami występowały rzadko. Wnioski: Wykazano istotną zależność koinfekcji B. burgdorferi i B. microti od stanowiska pracy, natomiast nie stwierdzono jej dla współwystępowania B. burgdorferi i A. phagocytophilum. Nie wykazano korelacji między względną aktywnością a zakażeniem kleszczy B. burgdorferi, A. phagocytophilum i B. microti. Med Pr 2014;65(5):575–581
    Źródło:
    Medycyna Pracy; 2014, 65, 5; 575-581
    0465-5893
    2353-1339
    Pojawia się w:
    Medycyna Pracy
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potencjalna rola kleszczy z gatunków Dermacentor reticulatus i Ixodes ricinus w krążeniu pasożytniczych pierwotniaków: Theileria spp., Babesia spp. i Toxoplasma gondii w środowisku naturalnym
    Potential role of ticks of the species Dermacentor reticulatus and Ixodes ricinus in the circulation of parasitic protozoa: Theileria spp., Babesia spp. and Toxoplasma gondii in the natural environment
    Autorzy:
    Wójcik-Fatla, Angelina
    Kloc, Anna
    Sawczyn, Anna
    Zając, Violetta
    Sroka, Jacek
    Cisak, Ewa
    Kulsharova, Aikerim
    Dutkiewicz, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/943335.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    theileria spp.
    babesia spp.
    toxoplasma gondii
    ixodes ricinus
    dermacentor reticulatus
    kleszcze
    choroby odkleszczowe
    Opis:
    Wprowadzenie i cel pracy. Kleszcze są zaliczane do obligatoryjnych ektopasożytów kręgowców lądowych, w tym również i człowieka. Stanowią rezerwuar, niekiedy wektor wielu drobnoustrojów chorobotwórczych (bakterii, wirusów i pierwotniaków) zagrażających zdrowiu zwierząt i ludzi. Głównym celem pracy była próba oceny, czy powszechnie występujące w Polsce kleszcze z gatunku Ixodes ricinus i Dermacentor reticulatus mogą stanowić potencjalny wektor i rezerwuar dla pierwotniaków: Babesia i Theileria, oraz Toxoplasma gondii, a tym samym odgrywać rolę w krążeniu tych patogenów w przyrodzie. Skrócony opis stanu wiedzy. Do grupy pierwotniaków występujących w kleszczach należą rodzaje Theileria spp., Babesia spp., i jak stwierdzono w ostatnich badaniach – Toxoplasma gondii. Rodzaje Theileria i Babesia stanowią duże zagrożenie głównie dla zwierząt, powodując m.in. gorączkę wschodniego wybrzeża, tropikalną tejleriozę, babeszjozę. Z kolei Toxoplasma gondii to pierwotniak szczególnie niebezpieczny dla kobiet w ciąży, który może wywoływać trwałe i nieodwracalne wady płodu. Dotychczasowe badania potwierdzają obecność tych pierwotniaków u niektórych gatunków kleszczy, jak również możliwość współwystępowania niektórych z nich w jednym osobniku. Podsumowanie. Z punktu widzenia zdrowia publicznego, badania dotyczące potencjalnej roli kleszczy w transmisji pasożytniczych pierwotniaków mogą przyczynić się do oceny realnego zagrożenia nabycia infekcji w przypadku pokłucia przez kleszcze. Szczególne znaczenie dla kobiet ciężarnych miałyby wyniki dotyczące roli kleszczy jako alternatywnej drogi w transmisji Toxoplasma gondii – czynnika etiologicznego toksoplazmozy.
    Introduction and objective. Ticks are classified into obligatory eco-parasites of terrestrial vertebrates, including humans. They constitute a reservoir, sometimes a vector of many pathological microorganisms (bacteria, viruses and protozoa) threatening the health of humans and animals. The primary objective of the study was an attempt to evaluate whether ticks of the species Ixodes ricinus and Dermacentor reticulatus, commonly occurring in Poland, may constitute a potential vector and reservoir for the protozoa: Babesia, Theileria, and Toxoplasma gondii, and at the same time, play a role in the circulation of these pathogens in nature. Brief description of the state of knowledge. The genera Theileria spp., Babesia spp, and as has been found in recent years, Toxoplasma gondii belong to the group of protozoa occurring in ticks. The genera Theileria and Babesia create a great risk, mainly for animals, causing, among others, east coast fever, tropical theileriosis and babesiosis. In the case of Toxoplasma gondii, this protozoan is especially dangerous for pregnant women, and may cause permanent and irreversible foetal defects. Studies to-date confirm the presence of these protozoa in some species of ticks, as well as the possibility of co-occurrence of some of them in one individual tick. Summing up. From the aspect of public health, studies concerning the potential role of ticks in the transmission of parasitic protozoa may contribute to the assessment of the actual risk of infection in the case of tick bites. The results concerning the role of ticks as an alternative route of transmission of T. gondii – the etiologic factor of toxoplasmosis, would be of a special importance for pregnant women.
    Źródło:
    Medycyna Ogólna i Nauki o Zdrowiu; 2016, 22(51), 3
    2083-4543
    Pojawia się w:
    Medycyna Ogólna i Nauki o Zdrowiu
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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