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    Wyświetlanie 1-6 z 6
    Tytuł:
    Current status of intestinal parasitic infections among inhabitants of the Ghazni and Parwan provinces, Afghanistan
    Autorzy:
    Korzeniewski, Krzysztof
    Chin Chung, Won
    Augustynowicz, Alina
    Lass, Anna
    Jong IK, Kim
    Powiązania:
    https://bibliotekanauki.pl/articles/553070.pdf
    Data publikacji:
    2017
    Wydawca:
    Stowarzyszenie Przyjaciół Medycyny Rodzinnej i Lekarzy Rodzinnych
    Tematy:
    intestinal parasites
    helminths
    protozoa
    Afghanistan.
    Źródło:
    Family Medicine & Primary Care Review; 2017, 1; 23-28
    1734-3402
    Pojawia się w:
    Family Medicine & Primary Care Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Helminth infections in faecal samples of Apennine wolf (Canis lupus italicus) and Marsican brown bear (Ursus arctos marsicanus) in two protected national parks of central Italy
    Autorzy:
    Paoletti, Barbara
    Iorio, Raffaella
    Traversa, Donato
    Di Francesco, Cristina E.
    Gentile, Leonardo
    Angelucci, Simone
    Amicucci, Cristina
    Bartolini, Roberto
    Marangi, Marianna
    Di Cesare, Angela
    Powiązania:
    https://bibliotekanauki.pl/articles/972259.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    intestinal helminths
    wolves
    bears
    faeces
    zoonosis
    Opis:
    This article reports the results of a copromicroscopic and molecular investigation carried out on faecalsamples of wolves (n=37) and brown bears (n=80) collected in two protected national parks of central Italy (Abruzzo Region). Twenty-three (62.2%) samples from wolves were positive for parasite eggs. Eight (34.78%) samples scored positive for single infections, i.e. E. aerophilus (21.74%), Ancylostoma/Uncinaria (4.34%), Trichuris vulpis (4.34%), T. canis (4.34%). Polyspecific infections were found in 15 samples (65.21%), these being the most frequent association: E. aerophilus and Ancylostoma/Uncinaria. Thirty-seven (46.25%) out of the 80 faecal samples from bears were positive for parasite eggs. Fourteen (37.83%) samples were positive for B. transfuga, and six (16.21%) of them also contained Ancylostoma/Uncinaria, one (2.7%) E. aerophilus and one (2.7%) both E. aerophilus and Ancylostoma/Uncinaria. Of the other samples, 19 (51.35%) were positive for Ancylostoma/Uncinaria, two (5.4%) for E. aerophilus and two (5.4%) for both. Molecular analysis found the roundworm and capillariid eggs found in wolves and bear samples to be Toxocara canis, Baylisascaris transfuga and Eucoleus aerophilus (syn. Capillaria aerophila). Considering the high prevalence of zoonotic intestinal helminths detected in this study, it is important to improve the knowledge and awareness of the general public and park operators regarding the potential health risk associated with infections in wildlife.
    Źródło:
    Annals of Parasitology; 2017, 63, 3; 205-212
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Frequency and immunological consequences of Helicobacter pylori and intestinal parasite co-infections: a brief review
    Autorzy:
    Krzyżek, Paweł
    Gościniak, Grażyna
    Powiązania:
    https://bibliotekanauki.pl/articles/972171.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Parazytologiczne
    Tematy:
    co-infection
    helminths
    protozoa
    Helicobacter pylori
    Opis:
    Helicobacter pylori is a Gram-negative, spiral bacterium capable of colonizing the gastric mucosa. Infections caused by this microorganism often lead to the development of various gastrointestinal complaints. Simultaneous human colonization by H. pylori and intestinal parasites is a common phenomenon. Moreover, the two groups of pathogens share the similar predisposing factors. The presence of parasites together with H. pylori can significantly influence the modulation of the host immune response. During H. pylori infection, strong polarization of Th1 cells is observed. The presence of protozoa, also contributing to the recruitment of Th1 cells, may well aggravate this response and exacerbate gastric mucosal damage. In contrast, intestinal helminth infection is associated with the polarization of lymphocytes towards Th2; their presence enhances the regenerative processes within the digestive tract and lowers the host overresponse. A literature review suggests that co-infection with intestinal helminths may serve as a buffering mechanism against the effects of H. pylori and/or protozoan infection, alleviating the Th1-dependent response and protecting against inflammations within the gastrointestinal tract.
    Źródło:
    Annals of Parasitology; 2017, 63, 4; 255-263
    0043-5163
    Pojawia się w:
    Annals of Parasitology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Division of methods for counting helminths’ eggs and the problem of efficiency of these methods
    Autorzy:
    Jaromin-Gleń, Katarzyna
    Kłapeć, Teresa
    Łagód, Grzegorz
    Karamon, Jacek
    Malicki, Jacek
    Skowrońska, Agata
    Bieganowski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/988990.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Medycyny Wsi
    Tematy:
    helminths’ eggs
    parasitological methods
    sewage sludge
    biosolid matrices
    efficiency of method
    Opis:
    From the sanitary and epidemiological aspects, information concerning the developmental forms of intestinal parasites, especially the eggs of helminths present in our environment in: water, soil, sandpits, sewage sludge, crops watered with wastewater are very important. The methods described in the relevant literature may be classified in various ways, primarily according to the methodology of the preparation of samples from environmental matrices prepared for analysis, and the sole methods of counting and chambers/instruments used for this purpose. In addition, there is a possibility to perform the classification of the research methods analyzed from the aspect of the method and time of identification of the individuals counted, or the necessity for staining them. Standard methods for identification of helminths’ eggs from environmental matrices are usually characterized by low efficiency, i.e. from 30% to approximately 80%. The efficiency of the method applied may be measured in a dual way, either by using the method of internal standard or the ‘Split/Spike’ method. While measuring simultaneously in an examined object the efficiency of the method and the number of eggs, the ‘actual’ number of eggs may be calculated by multiplying the obtained value of the discovered eggs of helminths by inverse efficiency.
    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:
    A review of tuberculosis and parasitic disease co-infection in ungulates, with regard to the potential threat to European bison (Bison bonasus)
    Autorzy:
    Gałązka, M.
    Didkowska, A.
    Anusz, K.
    Pyziel-Serafin, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/16647526.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czasopisma i Monografie PAN
    Tematy:
    bovine tuberculosis
    co-infection
    Fasciola hepatica
    helminths
    Mycobacterium bovis
    Mycobacterium caprae
    parasites
    Opis:
    Bovine tuberculosis (BTB) is a dangerous zoonosis which presents a serious problem for endangered species such as European bison (Bison bonasus). Little is known about the influence of parasitic co-infections on the course and diagnosis of tuberculosis in animals. The best known co-infection in cattle is Fasciola hepatica and Mycobacterium bovis. The aim of this study was to review the most recent literature regarding tuberculosis and parasite co-infection in ungulates and relate the results to European bison. Our findings indicate that any comprehensive diagnosis of BTB should include parasitological monitoring, and the possible impact of such invasions on cellular response-based tuberculosis tests should be taken into account. The diagnosis of BTB is complex, as is its pathogenesis, and parasitic infestations can have a significant impact on both. This should be taken into account during further research and monitoring of tuberculosis in European bison.
    Źródło:
    Polish Journal of Veterinary Sciences; 2023, 26, 1; 155-161
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Molecules released by helminth parasites involved in host colonization
    Autorzy:
    Dzik, Jolanta
    Powiązania:
    https://bibliotekanauki.pl/articles/1041267.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    ROS
    kinases
    superoxide dismutase
    phosphorylcholine
    proteinases
    cytokines
    helminths
    peroxiredoxins
    acetylcholinesterase
    phosphatases
    Th2 immune response
    proteinase inhibitors
    Opis:
    Parasites are designed by evolution to invade the host and survive in its organism until they are ready to reproduce. Parasites release a variety of molecules that help them to penetrate the defensive barriers and avoid the immune attack of the host. In this respect, particularly interesting are enzymes and their inhibitors secreted by the parasites. Serine-, aspartic-, cysteine-, and metalloproteinases are involved in tissue invasion and extracellular protein digestion. Helminths secrete inhibitors of these enzymes (serpins, aspins, and cystatins) to inhibit proteinases, both of the host and their own. Proteinases and their inhibitors, as well as helminth homologues of cytokines and molecules containing phosphorylcholine, influence the immune response of the host biasing it towards the anti-inflammatory Th2 type. Nucleotide-metabolizing enzymes and cholinesterase are secreted by worms to reduce inflammation and expel the parasites from the gastrointestinal tract. An intracellular metazoan parasite, Trichinella spiralis, secretes, among others, protein kinases and phosphatases, endonucleases, and DNA-binding proteins, which are all thought to interfere with the host cellular signals for muscle cell differentiation. Secretion of antioxidant enzymes is believed to protect the parasite from reactive oxygen species which arise from the infection-stimulated host phagocytes. Aside from superoxide dismutase, catalase (rarely found in helminths), and glutathione peroxidase (selenium-independent, thus having a poor activity with H2O2), peroxiredoxins are probably the major H2O2-detoxifying enzymes in helminths. Secretion of antioxidant enzymes is stage-specific and there are examples of regulation of their expression by the concentration of reactive oxygen species surrounding the parasite. The majority of parasite-secreted molecules are commonly found in free-living organisms, thus parasites have only adapted them to use in their way of life.
    Źródło:
    Acta Biochimica Polonica; 2006, 53, 1; 33-64
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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