The zoonotic parasite is a global cause of gastrointestinal disease in humans and ruminants. Sequence analysis of the highly polymorphic gene enabled the classification of isolates into multiple groups (e.g.
View Article and Find Full Text PDFThe main objective of the research was to study the environmental "price" of the large-scale, milk production from a rarely known perspective, from the mapping of the estrogenic footprint (the amount of oestrus-inducer hormonal products, and the generated endoestrogens) in the resulting slurry in a dairy cow farm. These micropollutants are endocrine-disrupting chemicals (EDCs) and can be dangerous to the normal reproductive functions even at ng/kg concentration. One of them, 17ß-estradiol, has a 20,000 times stronger estrogenic effect than bisphenol-A, a widely known EDC of industrial origin.
View Article and Find Full Text PDFBackground: The hemotropic mycoplasmas (hemoplasmas) of the genus Mycoplasma are recognized as important bacteria that parasitize red blood cells, causing hemolytic anemia in many mammalian species, including cats. No information is available concerning the presence of feline hemoplasma infections in cats in Romania. Thus, the objective of the present study was to provide data on the occurrence and molecular characterization of hemotropic mycoplasmas in client-owned cats in Romania.
View Article and Find Full Text PDFSpecies of the genus are recognized as protozoan parasites infecting a wide range of animals, including humans. This study aimed to provide data on the occurrence, genetic characterization, and epidemiological significance of spp. in cattle destined for human consumption in Romania.
View Article and Find Full Text PDFIn June 2015, an outbreak of cryptosporidiosis with 35 cases (23 probable and 12 laboratory-confirmed) occurred among 191 attendees of a residential rehabilitation holiday for paediatric organ transplant patients (n = 49) and their families at a hotel in Somogy county, Hungary. The overall attack rate was 18%. Most of the cases were transplanted children who experienced severe acute disease and required adjustment to their tacrolimus immunosuppression.
View Article and Find Full Text PDFExposure to various endocrine disrupting chemicals (EDCs) can lead to adverse effects on reproductive physiology and behavior in both animals and humans. An adequate strategy for the prevention of environmental contamination and eliminating the effects of them must be established. Chemicals with estrogenic activity were selected, and the effectiveness of their removal during the purification processes in two drinking water treatment plants (DWTPs) using riverbank infiltrated water was determined.
View Article and Find Full Text PDFIntroductionThis paper reviews the current knowledge and understanding of spp and spp. in humans, animals and the environment in 10 countries in the eastern part of Europe: Bosnia and Herzegovina, Croatia, Czech Republic, Estonia, Hungary, Latvia, Poland, Romania, Serbia and Slovenia. Published scientific papers and conference proceedings from the international and local literature, official national health service reports, national databases and doctoral theses in local languages were reviewed to provide an extensive overview on the epidemiology, diagnostics and research on these pathogens, as well as analyse knowledge gaps and areas for further research.
View Article and Find Full Text PDFFrom the group of parasitic protozoa, Giardia and Cryptosporidium are the most common pathogens spread in surface water sources, representing a continuous threat to public health and water authorities. The aim of this survey was to assess the occurrence and human infective potential of these pathogens in treated wastewaters and different surface water sources. A total of 76 western Romanian water bodies in four counties (Arad, Bihor, Caraș-Severin and Timiș) were investigated, including the effluents of wastewater treatment plants (n = 11) and brooks (n = 19), irrigation channels (n = 8), lakes (n = 16), and ponds (n = 22).
View Article and Find Full Text PDFThe objective of this study was to establish the prevalence, contamination level, and public health significance of Giardia duodenalis and Cryptosporidium spp. in the primary rivers of western Romania. A total of 53 sampling points in the 24 most important western Romanian rivers in four counties (Arad, Bihor, Caraș-Severin, and Timiș) were investigated from March to September 2016.
View Article and Find Full Text PDFOutbreak incidents raise the question of whether the less frequent aetiological agents of outbreaks are really less frequent in water. Alternatively, waterborne transmission could be relevant, but the lack of attention and rapid, sensitive methods to recover and detect the exogenous stages in water may keep them under-recognized. High quality information on the prevalence and detection of less frequent waterborne protozoa, such as Cyclospora cayetanensis, Toxoplasma gondii, Isospora belli, Balantidium coli, Blastocystis hominis, Entamoeba histolytica and other free-living amoebae (FLA), are not available.
View Article and Find Full Text PDFEnvironmental water samples from the Lower Rhine area in Germany were investigated via immunofluorescence assays (IFAs), nested polymerase chain reaction (nested PCR) and loop-mediated isothermal amplification (LAMP) to detect the presence of Giardia spp. (n=185) and Cryptosporidium spp. (n=227).
View Article and Find Full Text PDFIn this study the putative protective seroprevalence (PPS) of IgG antibodies to the 27-kDa and 15/17-kDa Cryptosporidium antigens in sera of healthy participants who were and were not exposed to Cryptosporidium oocysts via surface water-derived drinking water was compared. The participants completed a questionnaire regarding risk factors that have been shown to be associated with infection. The PPS was significantly greater (49-61%) in settlements where the drinking water originated from surface water, than in the control city where riverbank filtration was used (21% and 23%).
View Article and Find Full Text PDFThe transmission route of giardiasis not yet understood and why some infected individuals remain asymptomatic while others become quite ill. The drinking water quality is supposedly responsible for the prevalence of asymptomatic Giardia duodenalis infections in different areas, therefore asymptomatic giardiasis has been investigated in three water supply areas of Hungary: three hundred stool samples from inhabitants of Budapest, Füzér and Mátrafüred were examined by immunological and molecular methods for the presence of G. duodenalis infections.
View Article and Find Full Text PDFIntroduction: Many species of Cryptosporidium, and two assemlages of Giardia duodenalis cause typically acute diaorrhoea in human. The oocysts and cysts of these parasites excreted in faeces are capable of infecting other hosts and those are environmentally stable.
Aim: The aims of the study were to evaluate the prevalence and genotypes of Cryptosporidium and Giardia species from different water sources as well as to monitor and characterize the (oo)cyst contamination sources in watersheds.
We developed, in bench-scale experiments, a unified loop-mediated isothermal amplification (LAMP) assay for the detection of cutaneous, mucocutaneous and visceral leishmaniasis using DNA of cultivated promastigotes. Two primer sets for the LAMP assay were designed based on the 18S rRNA gene, and their sensitivity and specificity were tested and compared. Both of them were specific for Leishmania as the DNA of all ten Leishmania species tested was amplified, whereas the DNA of other parasites, including that of Trypanosoma, was not.
View Article and Find Full Text PDFSamples from different water sources (n = 396) were collected during 2009 and 2011. Wastewater (2-5 l) was purified by aluminium sulphate flocculation. Surface, ground and drinking waters (400-6400 l) were collected by filtration.
View Article and Find Full Text PDFInt J Hyg Environ Health
September 2010
Giardia duodenalis (synonymous Giardia lamblia and Giardia intestinalis) is a flagellated protozoan parasite that reproduces in the small intestine causing giardiasis. It is a cosmopolitan pathogen with a very wide host range, including domestic and wild animal species, as well as human beings. In this paper the current knowledge about the taxonomy and phylogeny of G.
View Article and Find Full Text PDFEighty fecal samples from pre-weaned calves with diarrhea were collected in the Tokachi area in Northern Japan to investigate the prevalence of Cryptosporidium species in such animals. Oocysts from fecal samples collected from each animal were concentrated using sucrose gradient centrifugation. Genomic DNA was extracted from each sample and processed by nested PCR to amplify the partial SSU rRNA gene of Cryptosporidium.
View Article and Find Full Text PDFAims: In this study, we report a new, simple methodology for the monitoring of Cryptosporidium oocysts and Giardia cysts in drinking water samples, ranging from 10- to 1000-l, which combines a new ARAD microfibre filtration of the (oo)cysts from drinking water and loop-mediated isothermal amplification (LAMP) of a human pathogenic Cryptosporidium parvum, Cryptosporidium hominis, Cryptosporidium meleagridis and Giardia duodenalis Assemblage A and B specific DNA sequence.
Methods And Results: During the evaluation of the new concentration and detection technique, spiked reagent and matrix water samples plus blank samples were filtered and tested. In total, 27 samples have been investigated.
Cryptosporidia, widely distributed protozoan parasites of vertebrates, have attracted increasing interest due to several serious waterborne outbreaks, the life-threatening nature of infection in immunocompromised patients, and the realization of economic losses caused by these pathogens in livestock. Genetic polymorphism within Cryptosporidium species is being detected at a continuously growing rate, owing to the widespread use of modern molecular techniques. The aim of this paper is to review the current status of taxonomy, genotyping and molecular phylogeny of Cryptosporidium species.
View Article and Find Full Text PDFFecal samples were taken from 132 (103 wild and 29 domestic) aquatic birds on selected areas in Hungary from February 2008 to March 2008. Cryptosporidium oocysts and Giardia cysts were purified from the samples and were viewed via fluorescent antibody staining. Molecular detection tools, such as PCR-sequencing and Loop mediated isothermal amplification (LAMP) were used in order to determine the Cryptosporidium species and Giardia duodenalis assemblages present.
View Article and Find Full Text PDFThe detection of two human-pathogenic Giardia duodenalis assemblages A and B in faecal and water samples by loop-mediated isothermal amplification (LAMP) has been evaluated. The LAMP reaction is reproducible, rapid and specific for the detection G. duodenalis and has lower costs compared to the other molecular assays.
View Article and Find Full Text PDFWe investigated the prevalence of Giardia and Cryptosporidium species and analysed the genotypes in 36 samples collected from different water sources and various geographic areas in Hungary. Samples were collected from drinking water and sewage treatment plants and from the recreation area of Lake Balaton. The (oo)cysts were purified according to the US EPA 1623 method and they were detected by immunofluorescence test (IFT).
View Article and Find Full Text PDF