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Babesiosis is as one of the emerging human and animal diseases transmitted by ticks. It is caused intraerythrocytic parasites of the genus Babesia. Current evidence of human babesiosis suggests that the majority of cases are involved by Babesia divergens and Babesia microti piroplasms. As zoonotic reservoir of B. microti serve small mammals - insectivores and rodents. The occurrence of this parasite in natural environment in Poland is documented for various regions, in the wide range of mammal hosts. The most important role as Babesia microti reservoir play Microtus voles. The prevalence of infection in Microtus arvalis studied in Mazurian Lakeland is 9-33%; in Microtus agrestis in Katowice agglomeration reach almost 50%, Microtus oeconomus in Białowieża 7.7-50%. The lesser role as zoonotic reservoir play Clethrionomys voles, Apodemus mice and shrews; the prevalence of infections in these mammals don't exceed 2 %. The vectors for B. microti piroplasms in middle-European conditions are Ixodes ricinus, I. trianguliceps and Dermacentor reticulatus. There were recorded the infections of Ixodes ricinus ticks with B. microti in Szczecin and Tri-City, the rate was 6.2-13.3%. The variation in B. microti prevalence in rodents and ticks is very changeable and determined by season, the interaction with other hemoparasites, host's age and local conditions.
The aim of presented study was a statistical analysis of haematological abnormalities in cases of canine babesiosis, especially according to age and breed of animals. Data submitted to analysis consisted of 350 haematological results from dogs that were diagnosed as Babesia positive, based on May-Grünwald-Giemsa stained blood smears. Haematology tests (erythrocyte, leukocyte, and platelet parameters) were performed on automated analyser. Haematological parameters that showed abnormalities were submitted to the statistical analysis with the group division based on animals' age and breed. It was found that the most significant haematological abnormality in the course of babesiosis is thrombocytopoenia, less severe abnormalities included anaemia, leukopoenias (both neutropoenia and lymphopoenia), moreover bi- or pancytopoenia were noted more seldom. Additionally, significant differences of PCV value between the group of young animals and both groups of adult and old animals were observed, and also in case of WBC value significant difference between German shepherds and mongrels were noted.
Vector-borne infection constitutes a significant health issue in dogs worldwide. Recent reports point to an increasing number of canine vector-borne disease cases in European countries, including Poland. Canine babesiosis caused by various Babesia species is a protozoal tick-borne disease with worldwide distribution and significant veterinary importance. The development and application of molecular methods have increased our knowledge about canine babesiosis, its prevalence, and clinical and pathological aspects of the infection. Parasitologists and veterinary surgeons need an accurate description of the species responsible for canine babesiosis to improve diagnostic and therapeutic methods, as well as predictions for the course of the disease. Therefore, we decided to summarise recent knowledge concerning Babesia species and B. canis.
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Babesiosis in humans is caused by infection with various species of Babesia (Apicomplexa, Piroplasmida), mainly transmitted by an arthropod vector – Ixodes spp. ticks. This review will focus on blood transfusion as another mode of Babesia transmission, especially in endemic areas, as well as the impact of human babesiosis on transfusion medicine.
Dermacentor reticulatus tick is a vector and final host of Babesia canis canis, protozoan parasite of the dog. In Poland and other European countries, endemic regions for canine babesiosis caused by B. canis canis are the same as endemic regions for D. reticulatus. In many of these regions, canine babesiosis is the most prevalent tick-borne disease in dogs. In Europe, increasing range of geographical distribution of D. reticulatus is observed. A consequence of this fact may be increasing range of canine babesiosis. D. reticulatus is one of the most common ticks occurring in Poland, however, it occurs mainly in the north-eastern and eastern part of the country, and there are many areas in which this species has not been reported yet. In this study, D. reticulatus ticks were collected from March 2007 to November 2008 in central and eastern Mazowsze region, and in some localities in Białystok and Lublin regions. Twenty four new sites for D. reticulatus, mainly in central and eastern regions of Mazowsze Province have been found. 18 localities are placed on banks of the fishing ponds or in river valleys and 6 are forests borders or barren lands and meadows, not situated near rivers or other water reservoirs. All tick-rich sites are localized in river valleys or on pond banks. However, statistical analysis showed that there were no differences in the density of ticks between groups of areas. These results show that the occurrence of D. reticulatus in newly detected areas has became endemic. Probably woodless, unregulated river valleys are important migration tracts for this species of tick and enable them to penetrate new territories. It seems likely that geographical range of D. reticulatus is widening from east to west of Poland what can induce an increase in the number of canine babesiosis cases in areas non-endemic for B. canis canis and its vector. Climate change may be also partially responsible for earlier beginning of tick’s seasonal activity as well as for bigger faunal diversity (more potential host species both for adults and immature stages).
In this study, two pairs of oligonucleotide primers were designed according to the nucleotide sequence of the internal transcribed spacers (ITSs) of Babesia bigemina and B. bovis isolates from China. The primers were used in a multiplex PCR to detect parasite DNA in blood samples from cattle. There was no cross reactions with B. ovata, B. major, B. sp. Kashi, Theileria annulata, T. sergenti, T. sinensis or normal bovine DNA. The sensitivity of multiplex PCR assay was 1 pg and 10 pg DNA for B. bigemina and B. bovis, respectively. A total of 260 field blood samples collected from cattle in five provinces of China were analyzed by multiplex PCR and light microscopy. PCR testing revealed that 7.3% (19/260) and 5.8% (15/260) of cattle were positive for B. bigemina and B. bovis and 1.2% (3/260) of cattle were co-infected with B. bigemina and B. bovis. Using light microscopy, 2.3% (6/260) and 1.5% (4/260) of cattle were infected by B. bigemina and B. bovis, respectively, and no co-infection was found. The results showed that the multiplex PCR developed in the present study could be an alternative diagnostic tool for the detection of B. bovis and B. bigemina infection in cattle.
The AST/ALT ratio was estimated in 182 dogs infected with Babesia canis. Among these dogs 65 had anaemia and 68 were azotaemic. Student’s t test was used to compare means of the AST/ALT ratio in anaemic and non-anaemic dogs, and in azotaemic and non-azotaemic dogs (p < 0.05). The differences in AST/ALT ratio between anaemic (1.52 ± 1.15) and non-anaemic (1.76 ± 1.34) dogs were statistically insignificant (p = 0.23), however, the comparison of AST/ALT ratio between azotaemic (2.68 ± 1.52) and non-azotaemic (1.08 ± 0.53) dogs revealed a significantly higher value of this index in azotaemic dogs (p = 0.00). The present results suggest that kidney injury contributed to increased AST activity in these dogs.
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