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Wyświetlanie 1-3 z 3
Tytuł:
Baylisaskarioza - nowa niebezpieczna zoonoza
Baylisascariasis - a new dangerous zoonosis
Autorzy:
Okulewicz, A.
Buńkowska, K.
Powiązania:
https://bibliotekanauki.pl/articles/2143550.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
szop pracz
Procyon lotor
nicienie pasozytnicze
parazytologia
zoonozy
Baylisascaris procyonis
baylisaskarioza
pasozyty
choroby odzwierzece
zywiciele
Opis:
Baylisascaris procyonis is a large nematode of the order Ascaridida, specific for raccoon (Procyon lotor). In North America, raccoons are extremely common in rural, suburban, and urban settings, where they have become well adapted to living alongside people. In the 1930s raccoons were introduced into Europe (i. a. Poland) and Asia for the commercial fur trade and into Japan as pets. The prevalence of B. procyonis infection in raccoons is often high, and infected animals can disseminate in their feces enormous numbers of parasite eggs. Raccoons defecate in preferred communal sites, termed latrines which play a vital role in the transmission dynamics of B. procyonis. Intestinal infections of non-raccoon species have been documented in dogs, rabbits in Japan and experimentally in opossums. Over 100 species mammals and birds can be paratenic host for B. procyonis. This parasite has emerged in recent years as one of the most serious causes of zoonotic visceral, ocular, and neural larva migrans and, in particular, of devastating encephalitis in young children. Several probable or confirmed cases of severe or fatal human B. procyonis infection have been documented. Diagnosis of Baylisascaris encephalitis is based on clinical central nervous system disease, peripheral and cerebrospinal fluid eosinophilia, deep white matter lesions visible by magnetic resonance imaging, and positive results of serologic tests. Treatment efficacy in clinical cases is poor, but albendazole prevents disease if given promptly after infection. While human baylisascariasis appears to be rare, the devastating neurologic disease that is caused by this infection and the lack of effective treatment make it a disease of public health importance. Certain characteristics of B. procyonis make it a feasible bioterrorist agent, because eggs can survive in the environment for extended periods of time, and the infectious dose of B. procyonis is relatively low. Moreover, the organism causes a severe, frequently fatal infection in humans, and no effective therapy or vaccine exists.
Źródło:
Wiadomości Parazytologiczne; 2009, 55, 4; 329-334
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zwierzęta jako potencjalne źródło zakażeń grzybiczych u ludzi
Animals as a potential source of human fungal infections
Autorzy:
Dworecka-Kaszak, B.
Powiązania:
https://bibliotekanauki.pl/articles/2143729.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
kryptokokoza
kandydoza
drozdzyca zob.kandydoza
aspergiloza
zwierzeta laboratoryjne
zoonozy
blastomykoza
kokcidioidomikoza zob.kokcidioidomykoza
kokcidioidomykoza
zrodla zakazenia
choroby odzwierzece
dermatomykoza
zwierzeta domowe
zwierzeta gospodarskie
dermatofitoza
grzybice
Opis:
Changing environment is a reason, that many saprotrophic fungi became opportunists and in the end also maybe a pathogenic. Host specific adaptation is not so strong among fungi, so there are many common fungal pathogens for people and for animals. Animals suffering from dermatomycosis are well recognize as source of human superficial mycoses. Breeding of different exotic animals such as parrots, various Reptiles and Amphibians, miniature Rodents and keeping them as a pets in the peoples houses, have become more and more popular in the recent years. This article is shortly presenting which animals maybe a potential source of fungal infections for humans. Looking for the other mycoses as systemic mycoses, especially candidiasis or aspergilosis there are no data, which allow excluding sick animals as a source of infection for human, even if those deep mycoses have endogenic reactivation mechanism. Immunocompromised people are in high−risk group when they take care of animals. Another important source of potentially pathogenic, mostly air−born fungi may be animal use in experimental laboratory work. During the experiments is possible that laboratory workers maybe hurt and these animals and their environment, food and house boxes could be the possible source of microorganisms, pathogenic for humans or other animals. Unusual way to inoculate these potentially pathogens into the skin of laboratory personnel may cause granulomatous, local lesions on their hands.
Źródło:
Wiadomości Parazytologiczne; 2008, 54, 2; 101-108
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zwierzęce rezerwuary inwazyjnych dla człowieka gatunków mikrosporydiów
Animal reservoirs of human virulent microsporidian species
Autorzy:
Słodkowicz-Kowalska, A.
Powiązania:
https://bibliotekanauki.pl/articles/2143499.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
ptaki
ssaki
zagrozenia chorobowe
Encephalitozoon cuniculi
zoonozy
Encephalitozoon intestinalis
mikrosporidie
Microsporidia
choroby odzwierzece
zwierzeta hodowlane
pasozyty czlowieka
zwierzeta dziko zyjace
choroby inwazyjne
choroby czlowieka
zwierzeta domowe
rezerwuary pasozytow
Encephalitozoon hellem
Enterocytozoon bieneusi
Opis:
The main objective of the present study was to determined the occurrence of Encephalitozoon intestinalis, E. hellem, E. cuniculi, and Enterocytozoon bieneusi in Poland in animal faecal using the FISH (Fluorescent In Situ Hybridization) and multiplex FISH techniques. Additional objectives included: (1) identification of animal hosts of microsporidia that are infectious to humans amongst free-ranging, captive, livestock and domestic animals; (2) a molecular analysis of randomly selected parasite isolates and determination of their zoonotic potential; (3) evaluation of the role of animals in the dissemination of microsporidia spores in the environment, and an estimation of the potential risk of infection for other animals and humans. A total of 1340 faecal samples collected from 178 species of animals were examined using conventional staining (chromotrope-2R and calcofluor white M2R staining) and molecular techniques (FISH and multiplex FISH techniques). Microsporidian spores were detected in 33 faecal samples (2.5%) obtained from 17 animal species. Microsporidia were demonstrated more often in birds (6.1%) than in mammals (0.7%); the difference was statistically significant (p<0.00001). In addition, the prevalence of microsporidian infections in waterfowl was significantly higher than the prevalence of microsporidian infections in other animals (p<0.03). Animal reservoirs of human infectious microsporidia were disclosed in six of 38 sites where faecal samples were taken from animals. Three species of human virulent microsporidia were identified in animals. Spores of E. hellem were found in 25 faecal samples (1.9%) taken from 12 bird species (6 zoo bird species, 4 free-ranging bird species, 2 livestock bird species). Spores of E. intestinalis were identified in five faecal samples (0.4%) taken from two livestock bird species and two zoo mammal species. In turn, E. bieneusi spores were detected only in three faecal samples (0.2%) taken from three zoo mammal species. It was demonstrated that the new hosts of E. hellem are the following bird species: mallard duck (Anas platyrhynchos), greyleg goose (Anser anser), mute swan (Cygnus olor), black-necked swan (Cygnus melancoryphus), black swan (Cygnus atratus), coscoroba swan (Coscoroba coscoroba), black-crowned crane (Balearica pavonina), nicobar pigeon (Caloenas nicobarica) and carrion crow (Corvus cornix). In addition, E. hellem was found for the first time in birds from the Anseriformes and Gruiformes orders. Whereas E. intestinalis was disclosed for the first time in the domestic goose (Anser anser f. domestica), red ruffed lemur (Varecia variegata rubra) and the ring-tailed lemur (Lemur catta), while the black lemur (Eulemur macaco flavifrons), mongoose lemur (Eulemur mongoz) and the Visayan warty pig (Sus cebifrons negrinus) were first found to carry E. bieneusi. The mammal species that were found to carry E. bieneusi and E. intestinalis are included in The IUCN Red List of Threatened Species. The results of the present study are significant from an epidemiological point of view. The wild, livestock and zoo animals that were found to carry microsporidia live in different conditions, and thus their role as animal reservoirs for these dangerous pathogens varies. Waterfowl birds may be the main source of contamination of surface waters with E. hellem spores and the protection of surface waters is virtually impossible. Moreover, isolates of E. hellem from mute swans have SSU rRNA sequences identical to E. hellem genotype reported 10 years ago in HIV-positive patient in USA (GenBank Accession no. L19070). This result indicate that E. hellem from mute swans can be a potential source of infection for humans. The contamination of the human environment with microsporidian spores infectious to humans is also facilitated by farm and synanthropic birds, because E. hellem and E. intestinalis were found in farms pigeons, domestic goose and the carrion crow. These birds can also be the source of infectious for breeders and ornithologists. The occurrence of microsporidiosis in animals kept in zoological gardens may constitute a deadly hazard not only for the animals themselves, but also for zoo personnel and visitors. The identification of animal reservoirs of E. hellem, E. intestinalis and E. bieneusi in Poland points to the possibility of infection of humans. The results of the present study have shown that the FISH technique, although time-consuming, is very sensitive, not overly costly and – what is of prime importance – it enables identification of microsporidian species, and therefore should be used for diagnosing microsporidiosis in humans and animals.
Źródło:
Wiadomości Parazytologiczne; 2009, 55, 1; 63-65
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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