251
|
Garcia-R JC, Pita AB, Velathanthiri N, French NP, Hayman DTS. Species and genotypes causing human cryptosporidiosis in New Zealand. Parasitol Res 2020; 119:2317-2326. [PMID: 32494897 DOI: 10.1007/s00436-020-06729-w] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 05/25/2020] [Indexed: 01/03/2023]
Abstract
Cryptosporidium is one of the most common causes of diarrhoea around the world. Successful management and prevention of this infectious disease requires knowledge of the diversity of species and subtypes causing human disease. We use sequence data from 2598 human faecal samples collected during an 11-year period (2009-2019) to better understand the impact of different species and subtypes on public health and to gain insights into the variation of human cryptosporidiosis in New Zealand. Human cryptosporidiosis in New Zealand is caused by a high diversity of species and subtypes. Six species cause human disease in New Zealand: C. hominis, C. parvum, C. cuniculus, C. erinacei, C. meleagridis and C. tyzzeri. Sequence analysis of the gp60 gene identified 16 subtype families and 101 subtypes. Cryptosporidium hominis IbA10G2 and C. parvum IIaA18G3R1 were the most frequent causes of human cryptosporidiosis with 27% and 29% of infections, respectively. Cryptosporidium hominis presented a peak of notified human cases during autumn (March-May) whereas most cases of human cryptosporidiosis caused by C. parvum are found during the calving and lambing season in spring (September-November). We also reported some subtypes that have been rarely detected in other countries such as IbA20G2 and IIoA13G1 and a low prevalence of the hypertransmissible and virulent IIaA15G2R1. This study provides insight into the variability of cryptosporidiosis in New Zealand essential for disease management and surveillance to prevent the introduction or spread of new species and subtypes in the country.
Collapse
Affiliation(s)
- Juan C Garcia-R
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand.
| | - Anthony B Pita
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand
| | - Niluka Velathanthiri
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand
| | - Nigel P French
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand
| | - David T S Hayman
- Molecular Epidemiology and Public Health Laboratory, Hopkirk Research Institute, School of Veterinary Science, Massey University, Private Bag 11-222, Palmerston North, New Zealand
| |
Collapse
|
252
|
Chique C, Hynds PD, Andrade L, Burke L, Morris D, Ryan MP, O'Dwyer J. Cryptosporidium spp. in groundwater supplies intended for human consumption - A descriptive review of global prevalence, risk factors and knowledge gaps. WATER RESEARCH 2020; 176:115726. [PMID: 32247994 DOI: 10.1016/j.watres.2020.115726] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/05/2020] [Accepted: 03/15/2020] [Indexed: 06/11/2023]
Abstract
Cryptosporidiosis is one of the leading causes of diarrhoeal illness and mortality induced by protozoan pathogens worldwide. As a largely waterborne disease, emphasis has been given to the study of Cryptosporidium spp. in surface waters, readily susceptible to pathogenic contamination. Conversely, the status of Cryptosporidium in potable groundwater sources, generally regarded as a pristine and "safe" drinking-water supply owing to (sub)-soil protection, remains largely unknown. As such, this investigation presents the first literature review aimed to ascertain the global prevalence of Cryptosporidium in groundwater supply sources intended for human consumption. Thirty-seven peer-reviewed studies were identified and included in the review. Groundwater sample and supply detection rates (estimated 10-20%) indicate Cryptosporidium is frequently present in domestic groundwater sources, representing a latent health concern for groundwater consumers. Specifically, sample (10.4%) and source (19.1%) detection rates deriving from comprehensive "temporal" investigations are put forward as representative of a contamination 'baseline' for Cryptosporidium in 'domestic' groundwater supplies. Proposed 'baseline' prevalence figures are largely applicable in preventive risk-based catchment and groundwater quality management including the formulation of Quantitative Microbial Risk Assessment (QMRA). Notwithstanding, a large geographical disparity in available investigations and lack of standardized reporting restrict the transferability of research findings. Overall, the mechanisms responsible for Cryptosporidium transport and ingress into groundwater supplies remain ambiguous, representing a critical knowledge gap, and denoting a distinctive lack of integration between groundwater and public-health sub-disciplines among investigations. Key recommendations and guidelines are provided for prospective studies directed at more integrative and multi-disciplinary research.
Collapse
Affiliation(s)
- C Chique
- School of Biological, Earth and Environmental Science (BEES), University College Cork, Cork, Ireland; Environmental Research Institute, University College Cork, Cork, Ireland
| | - P D Hynds
- Irish Centre for Research in Applied Geosciences, University College Dublin, Dublin, Ireland; Environmental Sustainability and Health Institute (ESIH), Technological University Dublin, Ireland.
| | - L Andrade
- School of Biological, Earth and Environmental Science (BEES), University College Cork, Cork, Ireland; Environmental Research Institute, University College Cork, Cork, Ireland; Irish Centre for Research in Applied Geosciences, University College Dublin, Dublin, Ireland
| | - L Burke
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine and Centre for Health from Environment, Ryan Institute, National University of Ireland, Galway, Ireland
| | - D Morris
- Antimicrobial Resistance and Microbial Ecology Group, School of Medicine and Centre for Health from Environment, Ryan Institute, National University of Ireland, Galway, Ireland
| | - M P Ryan
- Department of Chemical Sciences, University of Limerick, Limerick, Ireland
| | - J O'Dwyer
- School of Biological, Earth and Environmental Science (BEES), University College Cork, Cork, Ireland; Environmental Research Institute, University College Cork, Cork, Ireland; Irish Centre for Research in Applied Geosciences, University College Dublin, Dublin, Ireland.
| |
Collapse
|
253
|
Giardia and Cryptosporidium infections in Danish cats: risk factors and zoonotic potential. Parasitol Res 2020; 119:2275-2286. [PMID: 32451716 DOI: 10.1007/s00436-020-06715-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 05/10/2020] [Indexed: 12/17/2022]
Abstract
Giardia and Cryptosporidium infections are common in cats, but knowledge is limited about their clinical importance, risk factors, and the role of cats as a reservoir for human infections. Here, we collected faeces and questionnaire data from 284 cats from shelters and veterinary clinics in the Copenhagen Metropolitan Region (= study population). Additionally, 33 samples were analysed separately from catteries with gastrointestinal clinical signs (= cases). (Oo-)cysts were quantified by immunofluorescence microscopy. All Giardia (n = 34) and Cryptosporidium (n = 29) positive samples were analysed by sequencing of the 18S rRNA, gdh and hsp70 loci, and co-infections were detected by McMaster/inverted microscopy. In the study population, 7.0% and 6.7% were positive for Giardia and Cryptosporidium respectively; 48.5% and 36.4% of the breeder cats (cases) were infected. Increased odds of diarrhoea were demonstrated in Giardia (p = 0.0008) and Cryptosporidium (p = 0.034) positive cats. For Giardia, the odds were positively correlated with infection intensity. Co-infection with Cryptosporidium (OR 12.79; p < 0.001), parasitic co-infections other than Cryptosporidium (OR 5.22; p = 0.009), no deworming (OR 4.67; p = 0.035), and male sex (OR 3.63; p = 0.025) were risk factors for Giardia. For Cryptosporidium, co-infection with Giardia was the only risk factor (OR 11.93; p < 0.0001). Genotyping revealed G. duodenalis assemblages A and F, and C. felis, all of them previously detected in humans. In conclusion, excretion of Giardia and Cryptosporidium was associated with clinical disease. Although a public health risk is likely, studies including larger sample sizes, more discriminatory markers and samples from other animals and humans are needed to reveal the full zoonotic potential.
Collapse
|
254
|
O'Leary JK, Blake L, Corcoran D, Elwin K, Chalmers R, Lucey B, Sleator RD. Cryptosporidium spp surveillance and epidemiology in Ireland: a longitudinal cohort study employing duplex real-time PCR based speciation of clinical cases. J Clin Pathol 2020; 73:758-761. [DOI: 10.1136/jclinpath-2020-206479] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 02/06/2023]
Abstract
Cryptosporidium is a leading cause of gastroenteritis (cryptosporidiosis), with significant morbidity and mortality worldwide. Irish cryptosporidiosis incidence rates are consistently the highest reported in Europe. A retrospective, longitudinal study of clinical Cryptosporidium isolates was conducted from 2015 to 2018 in Cork, southern Ireland. Overall, 86.5% of cases were attributed to C. parvum, while the remaining 13.5% were caused by C. hominis. Despite the widespread implications of this protozoan parasite in sporadic and outbreak-related illness in Ireland, the current dearth of species-level epidemiological surveillance and clinical studies needs to be addressed in order to elucidate the national impact of this enteric pathogen.
Collapse
|
255
|
Xu Z, Li N, Guo Y, Feng Y, Xiao L. Comparative genomic analysis of three intestinal species reveals reductions in secreted pathogenesis determinants in bovine-specific and non-pathogenic Cryptosporidium species. Microb Genom 2020; 6. [PMID: 32416746 PMCID: PMC7371110 DOI: 10.1099/mgen.0.000379] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The three common intestinal Cryptosporidium species in cattle differ significantly in host range, pathogenicity and public health significance. While Cryptosporidium parvum is pathogenic in pre-weaned calves and has a broad host range, C. bovis and C. ryanae are largely non-pathogenic and bovine-specific species in post-weaned calves. Thus far, only the genome of C. parvum has been sequenced. To improve our understanding of the genetic determinants of biological differences among Cryptosporidium spcies, we sequenced the genomes of C. bovis and C. ryanae and conducted a comparative genomics analysis. The genome of C. bovis has a gene content and organization more similar to C. ryanae than to other Cryptosporidium species sequenced to date; the level of similarity in amino acid and nucleotide sequences between the two species is 75.2 and 69.4 %, respectively. A total of 3723 and 3711 putative protein-encoding genes were identified in the genomes of C. bovis and C. ryanae, respectively, which are fewer than the 3981 in C. parvum. Metabolism is similar among the three species, although energy production pathways are further reduced in C. bovis and C. ryanae. Compared with C. parvum, C. bovis and C. ryanae have lost 14 genes encoding mucin-type glycoproteins and three for insulinase-like proteases. Other gene gains and losses in the two bovine-specific and non-pathogenic species also involve the secretory pathogenesis determinants (SPDs); they have lost all genes encoding MEDLE, FLGN and SKSR proteins, and two of the three genes for NFDQ proteins, but have more genes encoding secreted WYLE proteins, secreted leucine-rich proteins and GPI-anchored adhesin PGA18. The only major difference between C. bovis and C. ryanae is in nucleotide metabolism. In addition, half of the highly divergent genes between C. bovis and C. ryanae encode secreted or membrane-bound proteins. Therefore, C. bovis and C. ryanae have gene organization and metabolic pathways similar to C. parvum, but have lost some invasion-associated mucin glycoproteins, insulinase-like proteases, MEDLE secretory proteins and other SPDs. The multiple gene families under positive selection, such as helicase-associated domains, AMP-binding domains, protein kinases, mucins, insulinases and TRAPs could contribute to differences in host specificity and pathogenicity between C. parvum and C. bovis. Biological studies should be conducted to assess the contribution of these copy number variations to the narrow host range and reduced pathogenicity of C. bovis and C. ryanae.
Collapse
Affiliation(s)
- Zhixiao Xu
- State Key Laboratory of Bioreactor Engineering, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Na Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China
| | - Yaqiong Guo
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China
| | - Yaoyu Feng
- State Key Laboratory of Bioreactor Engineering, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, PR China.,Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China
| | - Lihua Xiao
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China
| |
Collapse
|
256
|
Gunasekera S, Zahedi A, O’Dea M, King B, Monis P, Thierry B, M. Carr J, Ryan U. Organoids and Bioengineered Intestinal Models: Potential Solutions to the Cryptosporidium Culturing Dilemma. Microorganisms 2020; 8:microorganisms8050715. [PMID: 32403447 PMCID: PMC7285185 DOI: 10.3390/microorganisms8050715] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/06/2020] [Accepted: 05/08/2020] [Indexed: 12/19/2022] Open
Abstract
Cryptosporidium is a major cause of severe diarrhea-related disease in children in developing countries, but currently no vaccine or effective treatment exists for those who are most at risk of serious illness. This is partly due to the lack of in vitro culturing methods that are able to support the entire Cryptosporidium life cycle, which has led to research in Cryptosporidium biology lagging behind other protozoan parasites. In vivo models such as gnotobiotic piglets are complex, and standard in vitro culturing methods in transformed cell lines, such as HCT-8 cells, have not been able to fully support fertilization occurring in vitro. Additionally, the Cryptosporidium life cycle has also been reported to occur in the absence of host cells. Recently developed bioengineered intestinal models, however, have shown more promising results and are able to reproduce a whole cycle of infectivity in one model system. This review evaluates the recent advances in Cryptosporidium culturing techniques and proposes future directions for research that may build upon these successes.
Collapse
Affiliation(s)
- Samantha Gunasekera
- Vector and Waterborne Pathogens Research Group, College of Science, Health, Engineering and Education, Murdoch University, Murdoch 6150, Western Australia, Australia;
- Correspondence: (S.G.); (U.R.); Tel.: +61-8-9360-2495 (S.G.); +61-8-9360-2482 (U.R.)
| | - Alireza Zahedi
- Vector and Waterborne Pathogens Research Group, College of Science, Health, Engineering and Education, Murdoch University, Murdoch 6150, Western Australia, Australia;
| | - Mark O’Dea
- Antimicrobial Resistance and Infectious Diseases Laboratory, College of Science, Health, Engineering and Education, Murdoch University, Murdoch 6150, Western Australia, Australia; m.o’
| | - Brendon King
- South Australian Water Corporation, Adelaide 5000, South Australia, Australia; (B.K.); (P.M.)
- College of Medicine and Public Health, Flinders University, Adelaide 5042, South Australia, Australia;
| | - Paul Monis
- South Australian Water Corporation, Adelaide 5000, South Australia, Australia; (B.K.); (P.M.)
- Future Industries Institute and ARC Centre of Excellence for Convergent Bio and Nano Science, University of South Australia, Adelaide 5095, South Australia, Australia;
| | - Benjamin Thierry
- Future Industries Institute and ARC Centre of Excellence for Convergent Bio and Nano Science, University of South Australia, Adelaide 5095, South Australia, Australia;
| | - Jillian M. Carr
- College of Medicine and Public Health, Flinders University, Adelaide 5042, South Australia, Australia;
| | - Una Ryan
- Vector and Waterborne Pathogens Research Group, College of Science, Health, Engineering and Education, Murdoch University, Murdoch 6150, Western Australia, Australia;
- Correspondence: (S.G.); (U.R.); Tel.: +61-8-9360-2495 (S.G.); +61-8-9360-2482 (U.R.)
| |
Collapse
|
257
|
Ni N, Jia R, Guo Y, Li N, Wu H, Feng Y, Xiao L. Expression and Functional Studies of INS-5, an Insulinase-Like Protein in Cryptosporidium parvum. Front Microbiol 2020; 11:719. [PMID: 32457703 PMCID: PMC7225287 DOI: 10.3389/fmicb.2020.00719] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 03/27/2020] [Indexed: 11/13/2022] Open
Abstract
The small Cryptosporidium genome (∼9 Mb) has over 20 copies of genes encoding insulinase-like proteases (INS), suggesting that these enzymes may have important biological functions in the pathogen and could be developmentally regulated. In this study, INS-5, a unique member of the INS family in Cryptosporidium parvum, was cloned and expressed in Escherichia coli BL21 (DE3). In addition to the predicted INS-5 of ∼78 kDa, smaller fragments of ∼70, ∼55, and ∼30 kDa were simultaneously generated. After purification through a nickel-nitrilotriacetic acid affinity column, the full recombinant protein obtained was used to prepare polyclonal antibodies. Antibodies raised against INS-5 recognized the recombinant protein and native protein in sporozoite extracts. Further characterization of INS-5 included qRT-PCR assessment of gene expression; immunofluorescence localization of the protein expression in sporozoites, merozoites, and other developmental stages; and neutralization of invasion of C. parvum in vitro. The results obtained indicated that although INS-5 was expressed in sporozoites and merozoites, the high gene expression was from 36 to 48 h of the in vitro culture after invasion. Anti-INS-5 antibodies partially neutralized the invasion (inhibition rate = 38.5%). Results of this study suggest that INS-5 plays some role in the invasion and growth of C. parvum.
Collapse
Affiliation(s)
- Ni Ni
- State Key Laboratory of Bioreactor Engineering, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, China
| | - Ruilian Jia
- State Key Laboratory of Bioreactor Engineering, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, China
| | - Yaqiong Guo
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Na Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Haizhen Wu
- School of Biotechnology, East China University of Science and Technology, Shanghai, China
| | - Yaoyu Feng
- State Key Laboratory of Bioreactor Engineering, School of Resource and Environmental Engineering, East China University of Science and Technology, Shanghai, China.,Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Lihua Xiao
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| |
Collapse
|
258
|
Ahmadpour E, Safarpour H, Xiao L, Zarean M, Hatam-Nahavandi K, Barac A, Picot S, Rahimi MT, Rubino S, Mahami-Oskouei M, Spotin A, Nami S, Baghi HB. Cryptosporidiosis in HIV-positive patients and related risk factors: A systematic review and meta-analysis. ACTA ACUST UNITED AC 2020; 27:27. [PMID: 32351207 PMCID: PMC7191976 DOI: 10.1051/parasite/2020025] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 04/09/2020] [Indexed: 11/28/2022]
Abstract
Cryptosporidium is one of the major causes of diarrhea in HIV-positive patients. The aim of this study is to systematically review and meta-analyze the prevalence of Cryptosporidium in these patients. PubMed, Science Direct, Google Scholar, Web of Science, Cochrane and Ovid databases were searched for relevant studies dating from the period of 1 January 2000 to 31 December 2017. Data extraction for the included studies was performed independently by two authors. The overall pooled prevalence was calculated and subgroup analysis was performed on diagnostic methods, geographical distribution and study population. Meta-regression was performed on the year of publication, proportion of patients with diarrhea, and proportion of patients with CD4 < 200 cells/mL. One hundred and sixty-one studies and 51,123 HIV-positive participants were included. The overall pooled prevalence of Cryptosporidium infection in HIV-positive patients was 11.2% (CI95%: 9.4%–13.0%). The pooled prevalence was estimated to be 10.0% (CI95%: 8.4%–11.8%) using staining methods, 13.5% (CI95%: 8.9%–19.8%) using molecular methods, and 26.3% (CI95%: 15.0%–42.0%) using antigen detection methods. The prevalence of Cryptosporidium in HIV patients was significantly associated with the country of study. Also, there were statistical differences between the diarrhea, CD4 < 200 cells/mL, and antiretroviral therapy risk factors with Cryptosporidiosis. Thus, Cryptosporidium is a common infection in HIV-positive patients, and safe water and hand-hygiene should be implemented to prevent cryptosporidiosis occurrence in these patients.
Collapse
Affiliation(s)
- Ehsan Ahmadpour
- Research Center for Evidence Based Medicine (RCEBM), Tabriz University of Medical Sciences, 5166-15731 Tabriz, Iran - Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, 5166-15731 Tabriz, Iran
| | - Hanie Safarpour
- Student Research Committee, Tabriz University of Medical Sciences, 5166-15731 Tabriz, Iran
| | - Lihua Xiao
- College of Veterinary Medicine, South China Agricultural University, 510642 Guangzhou, China
| | - Mehdi Zarean
- Department of Parasitology and Mycology, Faculty of Medicine, Mashhad University of Medical Sciences, 91779-48964 Mashhad, Iran
| | | | - Aleksandra Barac
- Clinic for Infectious and Tropical Diseases, Clinical Centre of Serbia, 11000 Belgrade, Serbia
| | - Stephane Picot
- University Lyon, ICBMS UMR 5246 CNRS-INSA-CPE & Institute of Parasitology and Medical Mycology, Croix-Rousse Hospital, Hospices Civils de Lyon, 69004 Lyon, France
| | - Mohammad Taghi Rahimi
- Center for Health Related Social and Behavioral Sciences Research, Shahroud University of Medical Sciences, 36147-73947 Shahroud, Iran
| | - Salvatore Rubino
- Department of Biomedical Sciences, University of Sassari, 07100 Sardinia, Italy
| | - Mahmoud Mahami-Oskouei
- Department of Parasitology and Mycology, Faculty of Medicine, Tabriz University of Medical Sciences, 5166-15731 Tabriz, Iran
| | - Adel Spotin
- Immunology Research Center, Tabriz University of Medical Sciences, 5166-15731 Tabriz, Iran
| | - Sanam Nami
- Drug Applied Research Center, Tabriz University of Medical Sciences, 5166-15731 Tabriz, Iran
| | - Hossein Bannazadeh Baghi
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, 5166-15731 Tabriz, Iran
| |
Collapse
|
259
|
Genetic basis for virulence differences of various Cryptosporidium parvum carcinogenic isolates. Sci Rep 2020; 10:7316. [PMID: 32355272 PMCID: PMC7193590 DOI: 10.1038/s41598-020-64370-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 04/14/2020] [Indexed: 01/06/2023] Open
Abstract
Cryptosporidium parvum is known to cause life-threatening diarrhea in immunocompromised hosts and was also reported to be capable of inducing digestive adenocarcinoma in a rodent model. Interestingly, three carcinogenic isolates of C. parvum, called DID, TUM1 and CHR, obtained from fecal samples of naturally infected animals or humans, showed higher virulence than the commercially available C. parvum IOWA isolate in our animal model in terms of clinical manifestations, mortality rate and time of onset of neoplastic lesions. In order to discover the potential genetic basis of the differential virulence observed between C. parvum isolates and to contribute to the understanding of Cryptosporidium virulence, entire genomes of the isolates DID, TUM1 and CHR were sequenced then compared to the C. parvum IOWA reference genome. 125 common SNVs corresponding to 90 CDSs were found in the C. parvum genome that could explain this differential virulence. In particular variants in several membrane and secreted proteins were identified. Besides the genes already known to be involved in parasite virulence, this study identified potential new virulence factors whose functional characterization can be achieved through CRISPR/Cas9 technology applied to this parasite.
Collapse
|
260
|
Li J, Lang P, Huang M, Jing B, Karim MR, Chao L, Wang Z, Lv Y, Li J, Qi M. Molecular characterization of Cryptosporidium spp. and Giardia duodenalis in experimental rats in China. Parasitol Int 2020; 77:102127. [PMID: 32334095 DOI: 10.1016/j.parint.2020.102127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 04/16/2020] [Accepted: 04/17/2020] [Indexed: 12/17/2022]
Abstract
Cryptosporidium and Giardia are ubiquitous protozoan parasites that infect a broad range of hosts. The presence of Cryptosporidium spp. and G. duodenalis was detected in 355 fecal samples of laboratory experimental rats from four experimental rat rearing facilities in China by PCR amplification of the small subunit (SSU) rRNA gene. The G. duodenalis positive samples were further characterized in the β-giardin (bg), glutamate dehydrogenase (gdh), and triosephosphate isomerase (tpi) genes. The overall infection rates of Cryptosporidium spp. and G. duodenalis were 0.6% (2/355) and 9.3% (33/355), respectively, with no co-infection. Among the four facilities, only the rats in Zhengzhou1 were found positive for the two pathogens. Undetermined Cryptosporidium genotype was observed in one sample and C. ubiquitum in another sample. Assemblage G was identified in all the 33 G. duodenalis positive isolates at SSU rRNA gene, out of which 19, 20, and 21 isolates were also subtyped as assemblage G at tpi, gdh and bg gens, respectively. To our knowledge, this is the first report of Cryptosporidium and G. duodenalis infections in laboratory experimental rats in China. The infections of these pathogens in laboratory animals should be monitored routinely since they may interfere the biological experiments in these animals.
Collapse
Affiliation(s)
- Junqiang Li
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Ping Lang
- College of Animal Science, Tarim University, Alar, Xinjiang 843300, China.
| | - Meigui Huang
- College of Animal Science, Tarim University, Alar, Xinjiang 843300, China.
| | - Bo Jing
- College of Animal Science, Tarim University, Alar, Xinjiang 843300, China.
| | - Md Robiul Karim
- Faculty of Veterinary Medicine and Animal Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh.
| | - Liqin Chao
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Zhenzhen Wang
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Yue Lv
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Jun Li
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, Zhengzhou 450046, China.
| | - Meng Qi
- College of Animal Science, Tarim University, Alar, Xinjiang 843300, China.
| |
Collapse
|
261
|
Prevalence and molecular characterization of Cryptosporidium spp. in yaks (Bos grunniens) in Naqu, China. Microb Pathog 2020; 144:104190. [PMID: 32272216 DOI: 10.1016/j.micpath.2020.104190] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 03/17/2020] [Accepted: 04/01/2020] [Indexed: 02/06/2023]
Abstract
The intestinal protozoan specie, Cryptosporidium causes serious diarrheal syndrome in humans and animals worldwide. However, limited knowledge is known about the infection caused by this specie in yaks in Naqu. About 950 serum and 150 fecal samples were collected and assayed by using commercial ELISA kits and nPCR detection methods to find the prevalence and molecular characterization of Cryptosporidium spp. in yaks. Results found that 103 out of 950 (10.8%) serums were uncovered against C. parvum antibodies. In different regions, the prevalence of C. parvum in yaks were in a range from 9.1% to 16.7%, with obvious difference among the three areas (P < 0.001). In male and female yaks, the prevalence of C. parvum was found to be 7.2% and 13.3% respectively (P < 0.001); and a significant difference (P < 0.001) with a range of 9.8%-18.2% was observed among different age groups. Out of 150 fecal samples, only 2 (1.3%) positive samples were detected via nPCR. The positive samples were sequenced and identified to be C. bovis. The two isolates were clustered to cattle and yak clade separately. Our results highlight the prevalence and epidemiological status of Cryptosporidium spp. in yaks which may contribute towards the prevention and control of this zoonotic disease in Naqu, China.
Collapse
|
262
|
Liu A, Gong B, Liu X, Shen Y, Wu Y, Zhang W, Cao J. A retrospective epidemiological analysis of human Cryptosporidium infection in China during the past three decades (1987-2018). PLoS Negl Trop Dis 2020; 14:e0008146. [PMID: 32226011 PMCID: PMC7145189 DOI: 10.1371/journal.pntd.0008146] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 04/09/2020] [Accepted: 02/17/2020] [Indexed: 12/15/2022] Open
Abstract
Background Cryptosporidiosis is an emerging infectious disease of public health significance worldwide. The burden of disease caused by Cryptosporidium varies between and within countries/areas. To have a comprehensive understanding of epidemiological status and characteristics of human Cryptosporidium infection in China since the first report in 1987, a retrospective epidemiological analysis was conducted by presenting differences in the prevalence of Cryptosporidium by province, year, population, living environment and season and possible transmission routes and risk factors as well as genetic characteristics of Cryptosporidium in humans. Methodology/Principal findings A systematic search was conducted to obtain epidemiological papers of human Cryptosporidium infection/cryptosporidiosis from PubMed and Chinese databases. Finally, 164 papers were included in our analysis. At least 200,054 people from 27 provinces were involved in investigational studies of Cryptosporidium, with an average prevalence of 2.97%. The prevalence changed slightly over time. Variable prevalences were observed: 0.65–11.15% by province, 1.89–47.79% by population, 1.77–12.87% and 0–3.70% in rural and urban areas, respectively. The prevalence peak occurred in summer or autumn. Indirect person-to-person transmission was documented in one outbreak of cryptosporidiosis in a pediatric hospital. 263 Cryptosporidium isolates were obtained, and seven Cryptosporidium species were identified: C. hominis (48.3%), C. andersoni (22.43%), C. parvum (16.7%), C. meleagridis (8.36%), C. felis (3.04%), C. canis (0.76%) and C. suis (0.38%). Conclusions/Significances This systematic review reflects current epidemiological status and characteristics of Cryptosporidium in humans in China. These data will be helpful to develop efficient control strategies to intervene with and prevent occurrence of human Cryptosporidium infection/cryptosporidiosis in China as well as have a reference effect to other countries. Further studies should focus on addressing a high frequency of C. andersoni in humans and a new challenge with respect to cryptosporidiosis with an increasing population of elderly people and patients with immunosuppressive diseases. Cryptosporidium is a major cause of diarrheal disease in humans globally. Due to the lack of effective drug treatment and vaccine prevention against cryptosporidiosis, it is particularly important to develop efficient control strategies to intervene with and prevent Cryptosporidium infection in humans. The present review presented and analyzed epidemiological status and characteristics of Cryptosporidium infection in humans in China since the first report in 1987. To date, epidemiological investigations of Cryptosporidium infecion have been carried out in different populations in 27 provinces, autonomous regions, and municipalities. Average prevalence of Cryptosporidium was 2.97% (5,933/200,054). Like other infectious disease, due to poor sanitation conditions in rural areas, people living in rural areas had a significantly higher prevalence of Cryptosporidium (1.77–12.87%) than those living in urban areas (0–3.70%). Seven Cryptosporidium species were identified, including C. hominis, C. andersoni, C. parvum, C. meleagridis, C. felis, C. canis and C. suis. This retrospective epidemiological analysis indicates wide geographical distribution of human Cryptosporidium infection/cryptosporidiosis in China.
Collapse
Affiliation(s)
- Aiqin Liu
- Department of Parasitology, Harbin Medical University, Harbin, Heilongjiang, China
- * E-mail: (AL); (JC)
| | - Baiyan Gong
- Department of Parasitology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Xiaohua Liu
- Department of Parasitology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yujuan Shen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Center`for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, MOH; Shanghai, China
| | - Yanchen Wu
- Department of Parasitology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Weizhe Zhang
- Department of Parasitology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Jianping Cao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Center`for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, MOH; Shanghai, China
- * E-mail: (AL); (JC)
| |
Collapse
|
263
|
Li F, Zhang Z, Hu S, Zhao W, Zhao J, Kváč M, Guo Y, Li N, Feng Y, Xiao L. Common occurrence of divergent Cryptosporidium species and Cryptosporidium parvum subtypes in farmed bamboo rats (Rhizomys sinensis). Parasit Vectors 2020; 13:149. [PMID: 32204732 PMCID: PMC7092434 DOI: 10.1186/s13071-020-04021-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 03/16/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Bamboo rats are widely farmed in southern China for meat, but their potential in transmitting pathogens to humans and other farm animals remains unclear. METHODS To understand the transmission of Cryptosporidium spp. in these animals, 709 fecal samples were collected in this study from Chinese bamboo rats (Rhizomys sinensis) on nine farms in Jiangxi, Guangxi and Hainan provinces, China. They were analyzed for Cryptosporidium spp. using PCR and sequence analyses of the small subunit rRNA gene. Cryptosporidium parvum, C. parvum-like and C. ubiquitum-like genotypes identified were subtyped by sequence analysis of the 60 kDa glycoprotein (gp60) gene. RESULTS Altogether, Cryptosporidium spp. were detected in 209 (29.5%) samples. The detection rate in samples from animals under two months of age (70.0%,105/150) was significantly higher than in samples from animals above 2 months (18.6%, 104/559; χ2 = 150.27, df = 1, P < 0.0001). Four Cryptosporidium species/genotypes were identified: C. parvum (n = 78); C. occultus (n = 1); a new genotype that is genetically related to C. ubiquitum (n = 85); and another new genotype that is genetically related to C. parvum (n = 44). Among them, C. parvum (27,610 ± 71,911 oocysts/gram of feces) and the C. parvum-like genotype (38,679 ± 82,811 oocysts/gram of feces) had higher oocyst shedding intensity than the C. ubiquitum-like genotype (2470 ± 7017 oocysts/gram of feces) and the C. occultus (1012 oocysts/gram of feces). The C. parvum identified belonged to three subtypes in two rare subtype families, including IIpA9 (n = 43), IIpA6 (n = 6) and IIoA15G1 (n = 9), while the C. parvum-like and C. ubiquitum-like genotypes generated very divergent gp60 sequences. CONCLUSIONS Results of the present study suggest that bamboo rats on the study farms were infected with diverse Cryptosporidium species and divergent C. parvum subtypes, which probably had originated from their native habitats. As similar C. parvum subtypes have been recently detected in humans and farmed macaques, attentions should be paid to the potential role of these new farm animals in the transmission of zoonotic pathogens.
Collapse
Affiliation(s)
- Falei Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, China.,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, China
| | - Zhenjie Zhang
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Suhui Hu
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Wentao Zhao
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Jianguo Zhao
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou, 570228, Hainan, China
| | - Martin Kváč
- Institute of Parasitology, Biology Centre of the Czech Academy of Sciences, 370 05, Ceske Budejovice, Czech Republic
| | - Yaqiong Guo
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Na Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, China
| | - Yaoyu Feng
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, China. .,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, China.
| | - Lihua Xiao
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, Guangdong, China. .,Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, Guangdong, China.
| |
Collapse
|
264
|
Widmer G, Köster PC, Carmena D. Cryptosporidium hominis infections in non-human animal species: revisiting the concept of host specificity. Int J Parasitol 2020; 50:253-262. [PMID: 32205089 DOI: 10.1016/j.ijpara.2020.01.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/19/2020] [Accepted: 01/20/2020] [Indexed: 12/21/2022]
Abstract
Parasites in the genus Cryptosporidium, phylum Apicomplexa, are found worldwide in the intestinal tract of many vertebrate species and in the environment. Driven by sensitive PCR methods, and the availability of abundant sequence data and reference genomes, the taxonomic complexity of the genus has steadily increased; 38 species have been named to date. Due to its public health importance, Cryptosporidium hominis has long attracted the interest of the research community. This species was initially described as infectious to humans only. This perception has persisted in spite of an increasing number of observations of natural and experimental infections of animals with this species. Here we summarize and discuss this literature published since 2000 and conclude that the host range of C. hominis is broader than originally described. The evolving definition of the C. hominis host range raises interesting questions about host specificity and the evolution of Cryptosporidium parasites.
Collapse
Affiliation(s)
- Giovanni Widmer
- Department of Infectious Disease & Global Health, Cummings School of Veterinary Medicine at Tufts University, North Grafton, MA, 01536, United States
| | - Pamela C Köster
- Parasitology Reference and Research Laboratory, National Centre for Microbiology, Ctra. Majadahonda-Pozuelo Km 2, 28220 Majadahonda, Madrid, Spain
| | - David Carmena
- Parasitology Reference and Research Laboratory, National Centre for Microbiology, Ctra. Majadahonda-Pozuelo Km 2, 28220 Majadahonda, Madrid, Spain.
| |
Collapse
|
265
|
Wang SN, Sun Y, Zhou HH, Lu G, Qi M, Liu WS, Zhao W. Prevalence and genotypic identification of Cryptosporidium spp. and Enterocytozoon bieneusi in captive Asiatic black bears (Ursus thibetanus) in Heilongjiang and Fujian provinces of China. BMC Vet Res 2020; 16:84. [PMID: 32151253 PMCID: PMC7063761 DOI: 10.1186/s12917-020-02292-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 02/19/2020] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Cryptosporidium and Enterocytozoon bieneusi are two important pathogens with zoonotic potential that cause enteric infections in a wide range of hosts, including humans. Both are transmitted from animals to humans by direct contact or through contaminated equipment. Bears are frequently found in Chinese zoos as ornamental animals as well as farmed as commercial animals, and are therefore in close contact with zoo- or farm-keepers, but the prevalence and zoonotic potential of Cryptosporidium and E. bieneusi in bears is poorly understood. In this study, we aimed to provide data on the occurrence and genetic diversity of Cryptosporidium and E. bieneusi in Asiatic black bears from Heilongjiang and Fujian, China. From May 2015 to December 2017, 218 fresh fecal specimens were collected from captive Asiatic black bears in Heilongjiang (n = 36) and Fujian (n = 182), China. Cryptosporidium and E. bieneusi were examined by PCR amplification of the partial small subunit of ribosomal DNA (SSU rDNA) and the internal transcribed spacer (ITS) region of rDNA, respectively. C. andersoni-positive isolates were subtyped through PCR analysis of the four minisatellite/microsatellite (MS1, MS2, MS3 and MS16) loci. RESULTS The overall prevalence of Cryptosporidium and E. bieneusi were 2.4% (4/218) and 6.4% (14/218), respectively, with 2.8% (1/36) and 22.2% (8/36) in the Heilongjiang Province, and 1.6% (3/182) and 3.3% (6/182) in the Fujian Province. Sequence analysis confirmed the presence of Cryptosporidium species: C. andersoni (n = 3) and a genotype termed Cryptosporidium rat genotype IV (n = 1). All three identified C. andersoni belonged to the MLST subtype A4, A4, A4, A1. Two known E. bieneusi genotypes D (n = 4) and SC02 (n = 10) were identified, both of which belong to zoonotic Group 1. CONCLUSIONS This is the first report of C. andersoni and Cryptosporidium rat genotype IV in bears. The discovery of the zoonotic potential of E. bieneusi genotype D in bears highlights its significant zoonotic potential and potential threat to human health.
Collapse
Affiliation(s)
- Sheng-Nan Wang
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, China
| | - Yun Sun
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, China.,The Animal Husbandry and Veterinary Research Institute of HaiBei Tibetan Autonomous Prefecture, Xining, 810299, HaiBei Tibetan Autonomous Prefecture, China
| | - Huan-Huan Zhou
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, 571199, China.,Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, Hainan, 571199, China.,Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, 571199, China
| | - Gang Lu
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, 571199, China.,Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, Hainan, 571199, China.,Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, 571199, China
| | - Meng Qi
- College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Wei-Shi Liu
- College of Wildlife Resources, Northeast Forestry University, Harbin, 150040, China.
| | - Wei Zhao
- Department of Pathogenic Biology, Hainan Medical University, Haikou, Hainan, 571199, China. .,Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, Hainan, 571199, China. .,Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, Hainan, 571199, China. .,Department of Parasitology, Wenzhou Medical University, Wenzhou, 325035, China.
| |
Collapse
|
266
|
Zhang N, Yu X, Zhang H, Cui L, Li X, Zhang X, Gong P, Li J, Li Z, Wang X, Li X, Li T, Liu X, Yu Y, Zhang X. Prevalence and Genotyping of Cryptosporidium parvum in Gastrointestinal Cancer Patients. J Cancer 2020; 11:3334-3339. [PMID: 32231739 PMCID: PMC7097938 DOI: 10.7150/jca.42393] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 02/03/2020] [Indexed: 12/20/2022] Open
Abstract
Gastrointestinal cancers are the most commonly occurring malignancies which contributing to over 1/5 of cancer incidences worldwide. Increasing evidences have shown that Cryptosporidium spp., an apicomplexan protozoan, is highly associated with gastrointestinal cancers. However, the prevalence of Cryptosporidium spp. infections among gastrointestinal cancer patients in China has not been estimated yet. We here performed a case-control study to evaluate the occurrences of Cryptosporidium spp. in patients with digestive malignancies before chemotherapy and in control population. Nested PCR amplifying 18S rRNA gene was used to detect the presence of Cryptosporidium spp. in each fecal sample. The results herein confirmed the correlation of Cryptosporidium spp. infection with colorectal and liver cancers, while first identified the high frequencies of Cryptosporidium spp. in esophageal cancer and small intestine cancer. The infection rates of Cryptosporidium spp. in colorectal, esophageal, liver and small intestine cancers were 17.24% (20/116, P<0.001), 6.25% (1/16, P=0.029), 14.29% (1/7, P<0.001) and 40% (2/5, P<0.001), respectively. In addition, molecular characterization indicated that all the Cryptosporidium spp. obtained were Cryptosporidium parvum (C. parvum), and the 18S rRNA sequences were identical to the reference sequences isolated from cattle, suggesting potential zoonotic transmission. Furthermore, subtyping analyses revealed that IIaA15G2R1 and IIaA15G2R2 were the predominant subtypes in colorectal cancer, while IIaA13G2R2 subtype was first named and identified in colorectal and liver cancers. Taken together, for the first time, the prevalence of Cryptosporidium spp. infections in digestive cancer patients has been estimated among Chinese. Our results indicated that C. parvum were highly associated with gastrointestinal cancers, supporting that cryptosporidiosis could be a potential risk factor for these diseases.
Collapse
Affiliation(s)
- Nan Zhang
- The First Hospital, Key Laboratory of Zoonosis Research by Ministry of Education, Institute of Zoonosis, Jilin University, Changchun 130021, China
| | - Xiuyan Yu
- Jilin Cancer Hospital, Changchun 130021, China
| | - Hongbo Zhang
- Key Laboratory of Zoonosis Research by Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | | | - Xiaoou Li
- Jilin Cancer Hospital, Changchun 130021, China
| | | | - Pengtao Gong
- Key Laboratory of Zoonosis Research by Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Jianhua Li
- Key Laboratory of Zoonosis Research by Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Ziyi Li
- The First Hospital, Key Laboratory of Zoonosis Research by Ministry of Education, Institute of Zoonosis, Jilin University, Changchun 130021, China
| | - Xiaocen Wang
- Key Laboratory of Zoonosis Research by Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Xin Li
- Key Laboratory of Zoonosis Research by Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Ting Li
- Jilin Cancer Hospital, Changchun 130021, China
| | | | - Yanhui Yu
- Clinical Lab, The Second Hospital, Jilin University, Changchun 130021, China
| | - Xichen Zhang
- Key Laboratory of Zoonosis Research by Ministry of Education, Institute of Zoonosis, College of Veterinary Medicine, Jilin University, Changchun 130062, China
| |
Collapse
|
267
|
Abstract
Currently, nitazoxanide is the only FDA-approved treatment for cryptosporidiosis; unfortunately, it is ineffective in immunocompromised patients, has varied efficacy in immunocompetent individuals, and is not approved in infants under 1 year of age. Identifying new inhibitors for the treatment of cryptosporidiosis requires standardized and quantifiable in vitro assays for assessing potency, selectivity, timing of activity, and reversibility. Here, we provide new protocols for defining which stages of the life cycle are susceptible to four highly active compound classes that likely inhibit different targets in the parasite. We also utilize a newly developed long-term culture system to define assays for monitoring reversibility as a means of defining cidal activity as a function of concentration and time of treatment. These assays should provide valuable in vitro parameters to establish conditions for efficacious in vivo treatment. Cryptosporidium parvum and Cryptosporidium hominis have emerged as major enteric pathogens of infants in the developing world, in addition to their known importance in immunocompromised adults. Although there has been recent progress in identifying new small molecules that inhibit Cryptosporidium sp. growth in vitro or in animal models, we lack information about their mechanism of action, potency across the life cycle, and cidal versus static activities. Here, we explored four potent classes of compounds that include inhibitors that likely target phosphatidylinositol 4 kinase (PI4K), phenylalanine-tRNA synthetase (PheRS), and several potent inhibitors with unknown mechanisms of action. We utilized monoclonal antibodies and gene expression probes for staging life cycle development to define the timing of when inhibitors were active during the life cycle of Cryptosporidium parvum grown in vitro. These different classes of inhibitors targeted different stages of the life cycle, including compounds that blocked replication (PheRS inhibitors), prevented the segmentation of daughter cells and thus blocked egress (PI4K inhibitors), or affected sexual-stage development (a piperazine compound of unknown mechanism). Long-term cultivation of C. parvum in epithelial cell monolayers derived from intestinal stem cells was used to distinguish between cidal and static activities based on the ability of parasites to recover from treatment. Collectively, these approaches should aid in identifying mechanisms of action and for designing in vivo efficacy studies based on time-dependent concentrations needed to achieve cidal activity.
Collapse
|
268
|
Innes EA, Chalmers RM, Wells B, Pawlowic MC. A One Health Approach to Tackle Cryptosporidiosis. Trends Parasitol 2020; 36:290-303. [PMID: 31983609 PMCID: PMC7106497 DOI: 10.1016/j.pt.2019.12.016] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 12/03/2019] [Accepted: 12/25/2019] [Indexed: 12/16/2022]
Abstract
Cryptosporidiosis is a significant diarrhoeal disease in both people and animals across the world and is caused by several species of the protozoan parasite Cryptosporidium. Recent research has highlighted the longer-term consequences of the disease for malnourished children, involving growth stunting and cognitive deficits, and significant growth and production losses for livestock. There are no vaccines currently available to prevent the disease and few treatment options in either humans or animals, which has been a significant limiting factor in disease control to date. A One Health approach to tackle zoonotic cryptosporidiosis looking at new advances in veterinary, public, and environmental health research may offer several advantages and new options to help control the disease.
Collapse
Affiliation(s)
- Elisabeth A Innes
- Moredun Research Institute, Pentlands Science Park, Edinburgh EH26 OPZ, UK.
| | - Rachel M Chalmers
- National Cryptosporidium Reference Unit, Public Health Wales, Microbiology and Health Protection, Singleton Hospital, Swansea SA2 8QA, UK; Swansea University Medical School, Singleton Park, Swansea, SA2 8PP, UK
| | - Beth Wells
- Moredun Research Institute, Pentlands Science Park, Edinburgh EH26 OPZ, UK
| | - Mattie C Pawlowic
- Biological Chemistry and Drug Discovery, Wellcome Centre for Anti-Infectives Research, University of Dundee, Dundee, DD1 5EH, UK
| |
Collapse
|
269
|
Feng S, Jia T, Huang J, Fan Y, Chang H, Han S, Luo J, He H. Identification of Enterocytozoon bieneusi and Cryptosporidium spp. in farmed wild boars (Sus scrofa) in Beijing, China. INFECTION GENETICS AND EVOLUTION 2020; 80:104231. [PMID: 32007628 DOI: 10.1016/j.meegid.2020.104231] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/27/2020] [Accepted: 01/29/2020] [Indexed: 10/25/2022]
Abstract
Enterocytozoon bieneusi and Cryptosporidium spp. are opportunistic pathogen that can infected humans and other animals. However, the data on the prevalence and genotypes of the parasites in captive wild boars is not available in Beijing, China. In this study, a total of 257 fecal specimens of wild boars were collected. The overall prevalence of E. bieneusi and Cryptosporidium spp. was 42.0% (108/257) and 5.8%, respectively. Higher infection rate of E. bieneusi was discovered in the wild boar ≤2 months old (58.3%). The differences between the feeding pattern and gender were not significant. Furthermore, eight genotypes of E. bieneusi were determined by analyzing the internal transcribed spacer (ITS) of the rRNA gene, including seven known genotypes and one novel genotype. Phylogenetic analysis revealed that all the eight genotypes belonged to the zoonotic potential Group 1. For Cryptosporidium spp., no significant differences were found between groups of gender, age and feeding pattern. Only C. scrofarum was identified in the investigated samples. The findings suggest that wild boar could be reservoirs of E. bieneusi and C. scrofarum which could be potentially transmitted to humans and other animals.
Collapse
Affiliation(s)
- Shengyong Feng
- National Research Center for Wildlife Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China; College of Life Sciences, University of Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China.
| | - Ting Jia
- Beijing Key Laboratory of Captive Wildlife Technologies, Beijing Zoo, Beijing 100044, China
| | - Jingjing Huang
- National Research Center for Wildlife Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China; College of Life Sciences, University of Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China
| | - Yu Fan
- National Research Center for Wildlife Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China; College of Life Sciences, University of Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China
| | - Han Chang
- National Research Center for Wildlife Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China; College of Life Sciences, University of Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China
| | - Shuyi Han
- National Research Center for Wildlife Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China
| | - Jing Luo
- National Research Center for Wildlife Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China
| | - Hongxuan He
- National Research Center for Wildlife Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Chaoyang District, Beijing 100101, China.
| |
Collapse
|
270
|
Ospina-Villa JD, Tovar-Ayona BJ, López-Camarillo C, Soto-Sánchez J, Ramírez-Moreno E, Castañón-Sánchez CA, Marchat LA. mRNA Polyadenylation Machineries in Intestinal Protozoan Parasites. J Eukaryot Microbiol 2020; 67:306-320. [PMID: 31898347 DOI: 10.1111/jeu.12781] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 12/16/2019] [Accepted: 12/22/2019] [Indexed: 12/22/2022]
Abstract
In humans, mRNA polyadenylation involves the participation of about 20 factors in four main complexes that recognize specific RNA sequences. Notably, CFIm25, CPSF73, and PAP have essential roles for poly(A) site selection, mRNA cleavage, and adenosine residues polymerization. Besides the relevance of polyadenylation for gene expression, information is scarce in intestinal protozoan parasites that threaten human health. To better understand polyadenylation in Entamoeba histolytica, Giardia lamblia, and Cryptosporidium parvum, which represent leading causes of diarrhea worldwide, genomes were screened for orthologs of human factors. Results showed that Entamoeba histolytica and C. parvum have 16 and 12 proteins out of the 19 human proteins used as queries, respectively, while G. lamblia seems to have the smallest polyadenylation machinery with only six factors. Remarkably, CPSF30, CPSF73, CstF77, PABP2, and PAP, which were found in all parasites, could represent the core polyadenylation machinery. Multiple genes were detected for several proteins in Entamoeba, while gene redundancy is lower in Giardia and Cryptosporidium. Congruently with their relevance in the polyadenylation process, CPSF73 and PAP are present in all parasites, and CFIm25 is only missing in Giardia. They conserve the functional domains and predicted folding of human proteins, suggesting they may have the same roles in polyadenylation.
Collapse
Affiliation(s)
- Juan David Ospina-Villa
- Independent Researcher, Transversal 27A Sur # 42-14, C.P. 055421, Envigado, Antioquia, Colombia
| | - Brisna Joana Tovar-Ayona
- Posgrados en Biomedicina Molecular y en Biotecnología, ENMH, Instituto Politécnico Nacional, Av. Guillermo Massieu Helguera 239, Col. La Escalera, Gustavo A. Madero, C.P. 07320, Ciudad de México, Mexico
| | - César López-Camarillo
- Posgrado en Ciencias Genómicas, Universidad Autónoma de la Ciudad de México, San Lorenzo 290, Col. del Valle Sur, Benito Juárez, C.P. 03100, Ciudad de México, Mexico
| | - Jacqueline Soto-Sánchez
- Posgrados en Biomedicina Molecular y en Biotecnología, ENMH, Instituto Politécnico Nacional, Av. Guillermo Massieu Helguera 239, Col. La Escalera, Gustavo A. Madero, C.P. 07320, Ciudad de México, Mexico
| | - Esther Ramírez-Moreno
- Posgrados en Biomedicina Molecular y en Biotecnología, ENMH, Instituto Politécnico Nacional, Av. Guillermo Massieu Helguera 239, Col. La Escalera, Gustavo A. Madero, C.P. 07320, Ciudad de México, Mexico
| | - Carlos A Castañón-Sánchez
- Hospital Regional de Alta Especialidad de Oaxaca, Aldama s/n, Col. Centro, C.P. 71256 San Bartolo Coyotepec, Oaxaca, Mexico
| | - Laurence A Marchat
- Posgrados en Biomedicina Molecular y en Biotecnología, ENMH, Instituto Politécnico Nacional, Av. Guillermo Massieu Helguera 239, Col. La Escalera, Gustavo A. Madero, C.P. 07320, Ciudad de México, Mexico
| |
Collapse
|
271
|
Yildirim A, Adanir R, Inci A, Yukari BA, Duzlu O, Onder Z, Ciloglu A, Simsek E. Prevalence and genotyping of bovine Cryptosporidium species in the Mediterranean and Central Anatolia Region of Turkey. Comp Immunol Microbiol Infect Dis 2020; 69:101425. [PMID: 31978845 DOI: 10.1016/j.cimid.2020.101425] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 01/10/2020] [Accepted: 01/10/2020] [Indexed: 02/07/2023]
Abstract
The prevalence of Cryptosporidium species in calves and heifers with relation to diarrhea from several herds was investigated in this study. Fecal samples were collected from 135 and 120 pre-weaned calves and 79 and 130 heifers raised in the Central Anatolia (CAR) and Mediterranean Regions (MR) of Turkey, respectively. A total of 86 post-weaned calves in CAR were also included in the study. For diagnostic comparison, all samples were examined by microscopic examination, SSU rRNA nested PCR and TaqMan real-time PCR for the presence of oocyst and Cryptosporidium DNA. In total, 102 (34.0 %) and 93 (37.2 %) of the examined samples from CAR and MR were found positive for Cryptosporidium DNA with both nested PCR and real-time PCR analyses, respectively with an overall prevalence of 35.5 %. The diagnostic sensitivity and specificity of microscopic examination were determined as 68.7 % and 100.0 % compared to molecular tools, respectively. RFLP and sequence analyses of the SSU rRNA from the PCR products revealed that 138 (70.8 %) out of 195 positive isolates were C. parvum further confirming the species-specific real-time PCR results. Among the remaining 57 (29.2 %) positive isolates, 30 (15.4 %) and 27 (13.8 %) were characterized as C. ryanae and C. bovis, respectively. C. parvum was the dominant species in pre-weaned calves especially with diarrhea while C. bovis and C. ryanae were mostly found in post-weaned calves and heifers. The sequence analyses of the gp60 gene of C. parvum isolates revealed two subtypes (IIaA13G2R1, IIaA14G1R1) belonging to zoonotic family IIa, with IIaA13G2R1 being the most common in diarrheic calves.
Collapse
Affiliation(s)
- Alparslan Yildirim
- Erciyes University, Faculty of Veterinary Medicine, Parasitology Department, Kayseri, Turkey
| | - Ramazan Adanir
- Mehmet Akif Ersoy University, Faculty of Veterinary Medicine, Parasitology Department, Kayseri, Turkey
| | - Abdullah Inci
- Erciyes University, Faculty of Veterinary Medicine, Parasitology Department, Kayseri, Turkey
| | - Bayram Ali Yukari
- Mehmet Akif Ersoy University, Faculty of Veterinary Medicine, Parasitology Department, Kayseri, Turkey
| | - Onder Duzlu
- Erciyes University, Faculty of Veterinary Medicine, Parasitology Department, Kayseri, Turkey
| | - Zuhal Onder
- Erciyes University, Faculty of Veterinary Medicine, Parasitology Department, Kayseri, Turkey
| | - Arif Ciloglu
- Erciyes University, Faculty of Veterinary Medicine, Parasitology Department, Kayseri, Turkey
| | - Emrah Simsek
- Erciyes University, Faculty of Veterinary Medicine, Department of Preclinical Science, Kayseri 38090, Turkey.
| |
Collapse
|
272
|
Kubota R, Tokiwa T, Matsubara K, Okamoto M, Ike K. Detection and molecular characterization of Cryptosporidium species in wild-caught pet spiny-tailed lizards. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2020; 11:83-87. [PMID: 31956481 PMCID: PMC6962631 DOI: 10.1016/j.ijppaw.2020.01.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/07/2020] [Accepted: 01/07/2020] [Indexed: 11/24/2022]
Abstract
Uromastyx is a genus of the herbivorous agamid lizards, also known as spiny-tailed lizards or mastigures, which are found in parts of Africa and the Middle East. Currently, several species of this genus are available in the international pet trade in Japan. In this study, two imported wild-caught spiny-tailed lizards (Arabian blue mastigure, Uromastyx ornata philbyi, and Sudan mastigure, Uromastyx dispar flavifasciata) were diagnosed with a Cryptosporidium (Apicomplexa: Cryptosporidiidae) infection based on the presence of the oocysts in the rectal feces using sucrose flotation and light microscopy examination at a local animal hospital in Tokyo, Japan. One of the lizards had died, and histopathological examination revealed enteritis with the Cryptosporidium parasite. Sequence analyses using the small subunit ribosomal RNA, actin, and 70-kDa heat shock protein genes indicated that the lizards had contracted a novel variant of C. avium that commonly infects avian species. Two pet wild-caught spiny-tailed lizards exhibited gastrointestinal symptoms. Lizards were both infected with a novel Cryptosporidium avium variant. First detection of avian-associated Cryptosporidium species in the family Agamidae.
Collapse
Affiliation(s)
- Rie Kubota
- Laboratory of Veterinary Parasitology, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| | - Toshihiro Tokiwa
- Laboratory of Veterinary Parasitology, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| | | | - Minoru Okamoto
- Department of Veterinary Pathology, Rakuno Gakuen University Animal Medical Center, Ebetsu, Hokkaido, Japan
| | - Kazunori Ike
- Laboratory of Veterinary Parasitology, Nippon Veterinary and Life Science University, Musashino, Tokyo, Japan
| |
Collapse
|
273
|
Tangtrongsup S, Scorza AV, Reif JS, Ballweber LR, Lappin MR, Salman MD. Seasonal distributions and other risk factors for Giardia duodenalis and Cryptosporidium spp. infections in dogs and cats in Chiang Mai, Thailand. Prev Vet Med 2020; 174:104820. [DOI: 10.1016/j.prevetmed.2019.104820] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 12/15/2022]
|
274
|
Sazmand A, Joachim A, Otranto D. Zoonotic parasites of dromedary camels: so important, so ignored. Parasit Vectors 2019; 12:610. [PMID: 31881926 PMCID: PMC6935189 DOI: 10.1186/s13071-019-3863-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 12/19/2019] [Indexed: 01/14/2023] Open
Abstract
With a global population of about 35 million in 47 countries, dromedary camels play a crucial role in the economy of many marginal, desert areas of the world where they survive under harsh conditions. Nonetheless, there is scarce knowledge regarding camels' parasite fauna which can reduce their milk and meat productions. In addition, only scattered information is available about zoonotic parasites transmitted to humans via contamination (e.g. Cryptosporidium spp., Giardia duodenalis, Balantidium coli, Blastocystis spp. and Enterocytozoon bieneusi), as foodborne infections (e.g. Toxoplasma gondii, Trichinella spp. and Linguatula serrata) or by arthropod vectors (Trypanosoma spp.). Herein, we draw attention of the scientific community and health policy-making organizations to the role camels play in the epidemiology of parasitic zoonotic diseases also in the view of an increase in their farming in desert areas worldwide.
Collapse
Affiliation(s)
- Alireza Sazmand
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, 6517658978 Iran
| | - Anja Joachim
- Institute of Parasitology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, 1210 Vienna, Austria
| | - Domenico Otranto
- Department of Pathobiology, Faculty of Veterinary Science, Bu-Ali Sina University, Hamedan, 6517658978 Iran
- Department of Veterinary Medicine, University of Bari, Str. prov. per Casamassima km 3, 70010 Valenzano, Bari, Italy
| |
Collapse
|
275
|
Surface waters as a potential source of Giardia and Cryptosporidium in Serbia. Exp Parasitol 2019; 209:107824. [PMID: 31870927 DOI: 10.1016/j.exppara.2019.107824] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 12/05/2019] [Accepted: 12/19/2019] [Indexed: 11/21/2022]
Abstract
Giardiasis and cryptosporidiosis are recognized by the WHO as important emerging diseases of the 21st century. Symptoms are similar and include diarrhoea and vomiting, which may be severe, even life-threatening, for the immunocompromised and children under five years of age. Between 2013 and 2017, the Institute for Public Health in Serbia recorded 10 waterborne epidemics that manifested as gastrointestinal disease. Routine testing for enteropathogenic bacteria and viruses did not identify the aetiological agents of these outbreaks. As water is not examined for the presence of protozoa in Serbia, we performed a pilot study to analyse samples from four major rivers and their tributaries using a newly implemented methodology for detection of Giardia and Cryptosporidium, based on the ISO 15553:2006 standard. Using immunofluorescence microscopy, Giardia was detected in 10 out of the 31 samples, Cryptosporidium in five, while two samples were positive for both. Presence of G. duodenalis gDNA was confirmed by amplification of the β-giardin gene in eight samples, of which one and two, respectively, were identified by RFLP as potentially zoonotic assemblages A and B. The results suggest that surface water in Serbia may be a potential source of infection and call for more in-depth studies using sophisticated molecular tools.
Collapse
|
276
|
First Detection of Cryptosporidium spp. in Migratory Whooper Swans ( Cygnus cygnus) in China. Microorganisms 2019; 8:microorganisms8010006. [PMID: 31861389 PMCID: PMC7023085 DOI: 10.3390/microorganisms8010006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/13/2019] [Accepted: 12/17/2019] [Indexed: 01/11/2023] Open
Abstract
Cryptosporidium is an important protozoan parasite that can cause gastrointestinal diseases in humans and that also causes respiratory and gastrointestinal diseases in birds. In this study, we investigated the occurrence of Cryptosporidium species in migratory whooper swans in China. Fecal samples (n = 467) from whooper swans were collected from Sanmenxia Swan Lake National Urban Wetland Park, China. The samples were analyzed for Cryptosporidium species and genotypes with PCR along a sequence analysis of the small subunit rRNA. Cryptosporidium was detected in eight of the 467 (1.7%) samples. The analysis of the small subunit rRNA sequence data revealed two zoonotic species (Cryptosporidium parvum and Cryptosporidium andersoni) and one genotype (Cryptosporidium goose genotype II). These are the first data on the positive rate of Cryptosporidium spp. in whooper swans in China, and they suggest that whooper swans can harbor the zoonotic species C. parvum and C. andersoni in China.
Collapse
|
277
|
Morris A, Robinson G, Swain MT, Chalmers RM. Direct Sequencing of Cryptosporidium in Stool Samples for Public Health. Front Public Health 2019; 7:360. [PMID: 31921734 PMCID: PMC6917613 DOI: 10.3389/fpubh.2019.00360] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 11/13/2019] [Indexed: 01/24/2023] Open
Abstract
The protozoan parasite Cryptosporidium is an important cause of diarrheal disease (cryptosporidiosis) in humans and animals, with significant morbidity and mortality especially in severely immunocompromised people and in young children in low-resource settings. Due to the sexual life cycle of the parasite, transmission is complex. There are no restrictions on sexual recombination between sub-populations, meaning that large-scale genetic recombination may occur within a host, potentially confounding epidemiological analysis. To clarify the relationships between infections in different hosts, it is first necessary to correctly identify species and genotypes, but these differentiations are not made by standard diagnostic tests and more sophisticated molecular methods have been developed. For instance, multilocus genotyping has been utilized to differentiate isolates within the major human pathogens, Cryptosporidium parvum and Cryptosporidium hominis. This has allowed mixed populations with multiple alleles to be identified: recombination events are considered to be the driving force of increased variation and the emergence of new subtypes. As yet, whole genome sequencing (WGS) is having limited impact on public health investigations, due in part to insufficient numbers of oocysts and purity of DNA derived from clinical samples. Moreover, because public health agencies have not prioritized parasites, validation has not been performed on user-friendly data analysis pipelines suitable for public health practitioners. Nonetheless, since the first whole genome assembly in 2004 there are now numerous genomes of human and animal-derived cryptosporidia publically available, spanning nine species. It has also been demonstrated that WGS from very low numbers of oocysts is possible, through the use of amplification procedures. These data and approaches are providing new insights into host-adapted infectivity, the presence and frequency of multiple sub-populations of Cryptosporidium spp. within single clinical samples, and transmission of infection. Analyses show that although whole genome sequences do indeed contain many alleles, they are invariably dominated by a single highly abundant allele. These insights are helping to better understand population structures within hosts, which will be important to develop novel prevention strategies in the fight against cryptosporidiosis.
Collapse
Affiliation(s)
- Arthur Morris
- Institute of Biological, Environmental & Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom
| | - Guy Robinson
- Cryptosporidium Reference Unit, Public Health Wales Microbiology, Singleton Hospital, Swansea, United Kingdom
- Swansea University Medical School, Swansea, United Kingdom
| | - Martin T. Swain
- Institute of Biological, Environmental & Rural Sciences, Aberystwyth University, Aberystwyth, United Kingdom
| | - Rachel M. Chalmers
- Cryptosporidium Reference Unit, Public Health Wales Microbiology, Singleton Hospital, Swansea, United Kingdom
- Swansea University Medical School, Swansea, United Kingdom
| |
Collapse
|
278
|
Zhao W, Zhou HH, Ma TM, Cao J, Lu G, Shen YJ. PCR-Based Detection of Cryptosporidium spp. and Enterocytozoon bieneusi in Farm-Raised and Free-Ranging Geese ( Anser anser f. domestica) From Hainan Province of China: Natural Infection Rate and the Species or Genotype Distribution. Front Cell Infect Microbiol 2019; 9:416. [PMID: 31867290 PMCID: PMC6904268 DOI: 10.3389/fcimb.2019.00416] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 11/21/2019] [Indexed: 02/05/2023] Open
Abstract
Cryptosporidium spp. and Enterocytozoon bieneusi are two important zoonotic pathogens that can infect humans and a broad range of animal hosts. However, few studies have been conducted to study infection of the two pathogens in domestic geese until now. The aims of the present study were to determine the prevalence of natural infection, and the species or genotype distribution of Cryptosporidium and E. bieneusi in farm-raised and free-ranging geese from Hainan Province of China. In total, 266 fecal samples of geese were collected (142 farm-raised and 124 free-ranging geese). Cryptosporidium spp. and E. bieneusi were identified by nested PCR and sequencing analysis of the SSU rRNA and the ITS region of the rRNA genes. A total of 4.1% (12/226) of the geese were positive for Cryptosporidium spp., with 0.7% identified in the farm-raised geese and 7.0% in the free-ranging geese. Two bird-adapted species/genotypes were identified: C. baileyi (n = 1) and Cryptosporidium goose genotype I (n = 11). Meanwhile, E. bieneusi was found in 13.9% (37/266) of geese, with 8.9% identified in the farm-raised and 21.8% in the free-ranging geese. Eleven genotypes of E. bieneusi were identified constituted with six known genotypes: D (n = 13), I (n = 5), CHG2 (n = 1), CHG3 (n = 5), and CHG5 (n = 1), and five novel genotypes named HNE-I to V (one each). All of the genotypes identified in the geese here belonged to zoonotic Groups 1 or 2. This study is the first to demonstrate the presence of Cryptosporidium spp. and E. bieneusi in domestic geese from Hainan, China, and provides baseline data that will be useful for controlling and preventing these pathogens in goose farms. The geese infected with E. bieneusi, but not with Cryptosporidium, should be considered potential public health threats.
Collapse
Affiliation(s)
- Wei Zhao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
- Chinese Center for Tropical Diseases Research, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, Shanghai, China
- National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
- Department of Pathogenic Biology, Hainan Medical University, Haikou, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, China
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, China
- Department of Parasitology, Wenzhou Medical University, Wenzhou, China
| | - Huan-huan Zhou
- Department of Pathogenic Biology, Hainan Medical University, Haikou, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, China
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, China
| | - Tian-ming Ma
- Department of Pathogenic Biology, Hainan Medical University, Haikou, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, China
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, China
| | - Jianping Cao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
- Chinese Center for Tropical Diseases Research, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, Shanghai, China
- National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
| | - Gang Lu
- Department of Pathogenic Biology, Hainan Medical University, Haikou, China
- Hainan Medical University-The University of Hong Kong Joint Laboratory of Tropical Infectious Diseases, Hainan Medical University, Haikou, China
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Medical University, Haikou, China
| | - Yu-juan Shen
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
- Chinese Center for Tropical Diseases Research, Shanghai, China
- WHO Collaborating Centre for Tropical Diseases, Shanghai, China
- National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Shanghai, China
- Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
| |
Collapse
|
279
|
Li J, Dan X, Zhu K, Li N, Guo Y, Zheng Z, Feng Y, Xiao L. Genetic characterization of Cryptosporidium spp. and Giardia duodenalis in dogs and cats in Guangdong, China. Parasit Vectors 2019; 12:571. [PMID: 31783765 PMCID: PMC6884805 DOI: 10.1186/s13071-019-3822-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/21/2019] [Indexed: 01/30/2023] Open
Abstract
Background There are only limited number of reports on molecular epidemiology of Cryptosporidium spp. and Giardia duodenalis in dogs and cats in China. This study was conducted to assess the infection rates, genetic identity, and public health potential of these parasites in dogs and cats in Guangdong, China. Methods PCR and sequence analyses were used to identify and genotype Cryptosporidium spp. and G. duodenalis in fecal samples from 641 dogs and 418 cats in Guangdong. Chi-square test and odds ratio analysis were used to compare the occurrence rates of these pathogens and identify risk factors for infection. Results The overall infection rates of Cryptosporidium spp. and G. duodenalis were 6.9% (44/641) and 9.4% (60/641) in dogs, and 6.2% (26/418) and 3.6% (15/418) in cats. Purebred cats (12.4%; χ2 = 5.110, OR = 2.8, P = 0.024) and dogs (10.8%; χ2 = 5.597, OR = 4.8, P = 0.018) were more likely to be infected by Cryptosporidium spp. and G. duodenalis, respectively. Dogs (12.0%; χ2 = 7.589, OR = 2.6, P = 0.006) and cats (13.6%; χ2 = 8.235, OR = 3.5, P = 0.004) under 6 months had significantly higher infection rates of Cryptosporidium spp. than older animals. Household (13.9%; χ2 = 10.279, OR = 2.6, P = 0.008) and pet shop dogs (11.0%; χ2 = 7.182, OR = 2.0, P = 0.048) had higher occurrence of Cryptosporidium spp., as was the case for G. duodenalis occurrence in experimental dogs (13.4%; χ2 = 9.223, OR = 1.9, P = 0.017). Cryptosporidium canis (n = 42), C. muris (n = 1) and Cryptosporidium rat genotype IV (n = 1) were identified in dogs, while C. felis (n = 21), C. parvum (n = 3), C. muris (n = 1) and Cryptosporidium rat genotype IV (n = 1) were identified in cats. In contrast, the canine-specific assemblages C (n = 27) and D (n = 26) and the feline-specific assemblage F (n = 14) were almost exclusively the only genotypes of G. duodenalis in dogs and cats, respectively. There was no significant difference in infection rates of Cryptosporidium spp. and G. duodenalis between diarrheal and non-diarrheal pets. Conclusions While domestic pets in Guangdong are infected with zoonotic Cryptosporidium species, they are mainly infected with host-specific G. duodenalis genotypes. Risk factors for infections differ between Cryptosporidium spp. and G. duodenalis and between dogs and cats.![]()
Collapse
Affiliation(s)
- Jiayu Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaoyu Dan
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Kexin Zhu
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Na Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Yaqiong Guo
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Zezhong Zheng
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Yaoyu Feng
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
| | - Lihua Xiao
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
| |
Collapse
|
280
|
Gomez-Puerta LA, Gonzalez AE, Vargas-Calla A, Lopez-Urbina MT, Cama V, Xiao L. Cryptosporidium parvum as a risk factor of diarrhea occurrence in neonatal alpacas in Peru. Parasitol Res 2019; 119:243-248. [PMID: 31754858 DOI: 10.1007/s00436-019-06468-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 09/22/2019] [Indexed: 11/25/2022]
Abstract
Cryptosporidiosis has been reported as an important cause of neonatal diarrhea and mortality in cattle, sheep, and other ruminants, but its impact on alpaca health has not been studied thoroughly. In this study, we have determined the prevalence and evaluated the role of cryptosporidiosis as a risk factor for diarrhea occurrence in newborn alpacas. During the calving season (January-March) of 2006, stool specimens (N = 1312) were collected from 24 herds of newborn alpacas in Puno and Cuzco, departments that account for the largest populations of alpacas in Peru. All the specimens were microscopically screened for Cryptosporidium spp. using the acid-fast technique. The association between Cryptosporidium detection and diarrhea was analyzed using χ2 test and generalized lineal model. Cryptosporidium species were determined by PCR-RFLP analysis of the small subunit rRNA gene. Cryptosporidium oocysts were detected in 159 of 1312 (12.4%) newborn alpacas. Results of the analyses demonstrated that crypstosporidiosis was significantly associated with diarrhea (PR = 3.84; CI95% 2.54-5.81; p < 0.0001). Only Cryptosporidium parvum was detected in the 153 Cryptosporidium-infected animals. Thus, there is an association of C. parvum infection with diarrhea in neonatal alpacas.
Collapse
Affiliation(s)
- Luis A Gomez-Puerta
- Department of Veterinary Epidemiology and Economics, School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Av. Circunvalacion 2800, San Borja, 41, Lima, Peru.
| | - Armando E Gonzalez
- Department of Veterinary Epidemiology and Economics, School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Av. Circunvalacion 2800, San Borja, 41, Lima, Peru
| | - Ana Vargas-Calla
- Department of Veterinary Epidemiology and Economics, School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Av. Circunvalacion 2800, San Borja, 41, Lima, Peru
| | - Maria T Lopez-Urbina
- Department of Veterinary Epidemiology and Economics, School of Veterinary Medicine, Universidad Nacional Mayor de San Marcos, Av. Circunvalacion 2800, San Borja, 41, Lima, Peru
| | - Vitaliano Cama
- Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Lihua Xiao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| |
Collapse
|
281
|
First report of zoonotic Cryptosporidium parvum GP60 subtypes IIaA15G2R1 and IIaA16G3R1 in wild ponies from the northern Iberian Peninsula. Parasitol Res 2019; 119:249-254. [PMID: 31758296 DOI: 10.1007/s00436-019-06529-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 10/28/2019] [Indexed: 01/25/2023]
Abstract
Studies on the prevalence and molecular characterization of Cryptosporidium spp. affecting feral horses are scarce. The highland areas of the northern Iberian Peninsula are home to a large population of wild ponies which generally roam free in the ancient natural range and are subjected to a traditional exploitation regime. In the present study, a total of 79 non-diarrhoeal faecal samples from the wild ponies were collected from the ground immediately after defecation. Cryptosporidium was detected in 10 of the samples (12.6%) by a direct immunofluorescence antibody test and DNA amplification and sequencing. Analysis of partial sequences of the small subunit ribosomal RNA (SSU-rRNA) and heat shock protein (hsp70) loci revealed the presence of Cryptosporidium parvum. In addition, amplification and sequencing of a fragment of the 60-kDa glycoprotein (GP60) locus identified C. parvum subtypes IIaA15G2R1 and IIaA16G3R1. This study reports, for the first time, the occurrence of C. parvum in wild ponies in Europe, specifically in the northern Iberian Peninsula. Identification of the common subtype IIaA15G2R1 and also subtype IIaA16G3R1 (first description) indicates that these hosts may play a role in the sylvatic transmission of C. parvum and that they may act as a reservoir of zoonotic cryptosporidiosis.
Collapse
|
282
|
Beser J, Bujila I, Wittesjö B, Lebbad M. From mice to men: Three cases of human infection with Cryptosporidium ditrichi. INFECTION GENETICS AND EVOLUTION 2019; 78:104120. [PMID: 31751756 DOI: 10.1016/j.meegid.2019.104120] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/30/2019] [Accepted: 11/15/2019] [Indexed: 11/26/2022]
Abstract
Most human cases of cryptosporidiosis are caused by Cryptosporidium parvum or Cryptosporidium hominis. However, the number of recognised Cryptosporidium species, some of which are capable of infecting humans, is continuously increasing. Here we present three human cases infected with Cryptosporidium ditrichi, a recently described species in Apodemus spp. (striped field mouse, yellow-necked mouse, and wood mouse) from various European countries. All three patients were infected in Sweden, but in different years and in different parts of the country. Two patients, from whom clinical data were available, showed symptoms consistent with cryptosporidiosis. For one patient, epidemiological data indicated a possible close contact with mice. The obtained sequences at the small subunit rRNA, actin, and Cryptosporidium oocyst wall protein loci showed 100% identity to C. ditrichi isolates from Apodemus spp., while no 70 kDa heat shock protein gene sequences from C. ditrichi were available for comparison. This study shows the importance of including molecular typing in Cryptosporidium surveillance programmes, and it adds one more species to the plethora of Cryptosporidium spp. hitherto diagnosed in Swedish patients.
Collapse
Affiliation(s)
- Jessica Beser
- Department of Microbiology, Public Health Agency of Sweden, Solna, Sweden.
| | - Ioana Bujila
- Department of Microbiology, Public Health Agency of Sweden, Solna, Sweden
| | - Bengt Wittesjö
- Department of Communicable Disease Control and Prevention, Blekinge County, Sweden
| | - Marianne Lebbad
- Department of Microbiology, Public Health Agency of Sweden, Solna, Sweden
| |
Collapse
|
283
|
Fan Y, Feng Y, Xiao L. Comparative genomics: how has it advanced our knowledge of cryptosporidiosis epidemiology? Parasitol Res 2019; 118:3195-3204. [DOI: 10.1007/s00436-019-06537-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 10/30/2019] [Indexed: 11/30/2022]
|
284
|
Ma DW, Lee MR, Hong SH, Cho SH, Lee SE. Molecular Prevalence and Genotypes of Cryptosporidium parvum and Giardia duodenalis in Patients with Acute Diarrhea in Korea, 2013-2016. THE KOREAN JOURNAL OF PARASITOLOGY 2019; 57:531-536. [PMID: 31715696 PMCID: PMC6851252 DOI: 10.3347/kjp.2019.57.5.531] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/09/2019] [Indexed: 01/24/2023]
Abstract
Cryptosporidium parvum and Giardia duodenalis are the main diarrhea-causing parasitic pathogens; however, their prevalence in Korea is unknown. Here, we conducted a survey to determine the prevalence and genotype distribution of these 2 pathogens causing acute diarrhea in 8,571 patients hospitalized in 17 Regional Institute of Health Environment sites in Korea, during 2013–2016. C. parvum and G. duodenalis were detected and genotyped by nested PCR, and the isolate were molecularly characterized by sequencing the glycoprotein 60 (Gp60) and β-giardin genes, respectively. The overall prevalence of C. parvum and G. duodenalis was 0.37% (n=32) and 0.55% (n=47), respectively, and both pathogens were more prevalent in children under 9 years old. Molecular epidemiological analysis showed that the C. parvum isolates belonged to the IIa family and were subtyped as IIaA13G2R1, IIaA14G2R1, IIaA15G2R1, and IIaA18G3R1. Analysis of the β-giardin gene fragment from G. duodenalis showed that all positive strains belong to assemblage A. This is the first report on the molecular epidemiology and subtyping of C. parvum and G. duodenalis in such a large number of diarrheal patients in Korea. These results highlight the need for continuous monitoring of these zoonotic pathogens and provide a basis for implementing control and prevention strategies. Further, the results might be useful for epidemiological investigation of the source of outbreak.
Collapse
Affiliation(s)
- Da-Won Ma
- Division of Vectors and Parasitic Diseases, Centers for Disease Control and Prevention, Osong 28159, Korea
| | - Myoung-Ro Lee
- Division of Vectors and Parasitic Diseases, Centers for Disease Control and Prevention, Osong 28159, Korea
| | - Sung-Hee Hong
- Division of Vectors and Parasitic Diseases, Centers for Disease Control and Prevention, Osong 28159, Korea
| | - Shin-Hyeong Cho
- Division of Vectors and Parasitic Diseases, Centers for Disease Control and Prevention, Osong 28159, Korea
| | - Sang-Eun Lee
- Division of Vectors and Parasitic Diseases, Centers for Disease Control and Prevention, Osong 28159, Korea
| |
Collapse
|
285
|
Firoozi Z, Sazmand A, Zahedi A, Astani A, Fattahi-Bafghi A, Kiani-Salmi N, Ebrahimi B, Dehghani-Tafti A, Ryan U, Akrami-Mohajeri F. Prevalence and genotyping identification of Cryptosporidium in adult ruminants in central Iran. Parasit Vectors 2019; 12:510. [PMID: 31666095 PMCID: PMC6822396 DOI: 10.1186/s13071-019-3759-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/22/2019] [Indexed: 12/22/2022] Open
Abstract
Background Apicomplexan parasites of the genus Cryptosporidium infect a wide range of animal species as well as humans. Cryptosporidium spp. can cause life threatening diarrhea especially in young animals, children, immunocompromised patients and malnourished individuals. Asymptomatic cryptosporidial infections in animals can also occur, making these animals potential reservoirs of infection. Methods In the present study, a molecular survey of Cryptosporidium spp. in ruminants that were slaughtered for human consumption in Yazd Province, located in central Iran was conducted. Faeces were collected per-rectum from 484 animals including 192 cattle, 192 sheep and 100 goats. DNA was extracted from all samples and screened for Cryptosporidium by PCR amplification of the 18S rRNA gene. Positives were Sanger sequenced and further subtyped by sequence analysis of the 60 kDa glycoprotein (gp60) locus. Results In total, Cryptosporidium spp. were detected in 22 animals: C. andersoni and C. bovis in seven and two cattle faecal samples, respectively, C. ubiquitum in five sheep, and C. xiaoi in six sheep and two goat samples, respectively. To our knowledge, this study provides for the first time, molecular information concerning Cryptosporidium species infecting goats in Iran, and is also the first report of C. ubiquitum and C. xiaoi from ruminants in Iran. Conclusion The presence of potentially zoonotic species of Cryptosporidium in ruminants in this region may suggest that livestock could potentially contribute to human cryptosporidiosis, in particular among farmers and slaughterhouse workers, in the area. Further molecular studies on local human populations are required to more accurately understand the epidemiology and transmission dynamics of Cryptosporidium spp. in this region.
Collapse
Affiliation(s)
- Zohre Firoozi
- Zoonotic Diseases Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran.,Department of Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Alireza Sazmand
- Department of Pathobiology, Faculty of Veterinary Sciences, Bu-Ali Sina University, Hamedan, Iran
| | - Alireza Zahedi
- Vector and Water-Borne Pathogens Research Group, College of Science, Health, Engineering and Education, Murdoch University, Murdoch, WA, 6150, Australia
| | - Akram Astani
- Zoonotic Diseases Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran.,Department of Microbiology Sciences, School of Medicine, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Ali Fattahi-Bafghi
- Department of Parasitology, School of Medicine, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Narges Kiani-Salmi
- Zoonotic Diseases Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran.,Department of Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Behnam Ebrahimi
- Yazd Cardiovascular Research Center, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Arefeh Dehghani-Tafti
- Department of Biostatics and Epidemiology, School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran
| | - Una Ryan
- Vector and Water-Borne Pathogens Research Group, College of Science, Health, Engineering and Education, Murdoch University, Murdoch, WA, 6150, Australia
| | - Fateme Akrami-Mohajeri
- Zoonotic Diseases Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran. .,Department of Food Hygiene and Safety, School of Public Health, Shahid Sadoughi University of Medical Sciences and Health Services, Yazd, Iran.
| |
Collapse
|
286
|
Chen YW, Zheng WB, Zhang NZ, Gui BZ, Lv QY, Yan JQ, Zhao Q, Liu GH. Identification of Cryptosporidium viatorum XVa subtype family in two wild rat species in China. Parasit Vectors 2019; 12:502. [PMID: 31661007 PMCID: PMC6819409 DOI: 10.1186/s13071-019-3763-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 10/22/2019] [Indexed: 12/15/2022] Open
Abstract
Background Cryptosporidium viatorum is a minor Cryptosporidium pathogen in humans. Currently, there is limited information regarding the prevalence and genotypes of C. viatorum in animals in China. Methods In this study, 228 faecal samples were collected from two wild rat species (Leopoldamys edwardsi and Berylmys bowersi) in Chongqing Municipality and Guangdong Province, China. These specimens were analyzed for C. viatorum and then subtyped it using PCR and sequence analysis of the small subunit ribosomal RNA (SSU rRNA) and 60-kilodalton glycoprotein (gp60) genes, respectively. Results A total of 25 (11.0%) faecal samples were tested positive for C. viatorum by SSU rRNA assay. Of these samples, 4 (3.6%) came from L. edwardsi and 21 (18.0%) from B. bowersi. Of the 25 C. viatorum-positive samples, 17 were successfully amplified at the gp60 gene locus, which represented four subtypes belonging to two subtype families, including XVa (XVaA6, XVaA3g, XVaA3h) and XVc (XVcA2G1). Phylogenetic analysis based on the gp60 amino acid sequences indicated that all of the C. viatorum isolates grouped together, supporting the conclusion that C. viatorum from the wild rats represent two subtype families. Conclusions These results indicate an occurrence of C. viatorum XVa subtype family from rats which is genetically identical to those found in humans. Our findings suggest that wild rats may be a potential source of human cryptosporidiosis.![]()
Collapse
Affiliation(s)
- Yi-Wei Chen
- Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, Hunan, People's Republic of China
| | - Wen-Bin Zheng
- Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, Hunan, People's Republic of China.,State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, Gansu, People's Republic of China
| | - Nian-Zhang Zhang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, Gansu, People's Republic of China
| | - Bin-Ze Gui
- Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, Hunan, People's Republic of China
| | - Qiu-Yan Lv
- Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, Hunan, People's Republic of China
| | - Jia-Qi Yan
- Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, Hunan, People's Republic of China
| | - Quan Zhao
- College of Life Sciences, Changchun Sci-Tech University, Shuangyang, 130600, Jilin, People's Republic of China.
| | - Guo-Hua Liu
- Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, College of Veterinary Medicine, Hunan Agricultural University, Changsha, 410128, Hunan, People's Republic of China. .,Hunan Co-Innovation Center of Animal Production Safety, Changsha, 410128, Hunan, People's Republic of China.
| |
Collapse
|
287
|
Characterization of INS-15, A Metalloprotease Potentially Involved in the Invasion of Cryptosporidium parvum. Microorganisms 2019; 7:microorganisms7100452. [PMID: 31615118 PMCID: PMC6843835 DOI: 10.3390/microorganisms7100452] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 10/07/2019] [Accepted: 10/12/2019] [Indexed: 11/23/2022] Open
Abstract
Cryptosporidium parvum is a protozoan parasite that can cause moderate-to-severe diarrhea. Insulinase-like proteases (INS) are one of the largest protein families within the small proteome of the pathogen. However, their roles in C. parvum biology remain un-elucidated. In this study, a member of the protein family, INS-15 of C. parvum encoded by cgd3_4260, was cloned, expressed and characterized to understand its function. INS-15 and its domain I were expressed in Escherichia coli and polyclonal antibodies against the domain I and one specific polypeptide were prepared in rabbits. The role of INS-15 protein in the C. parvum invasion was preliminarily studied. Recombinant INS-15 protein and its domain I were successfully expressed in E. coli, together with various degraded products. The cgd3_4260 gene had a peak expression at 2 h of in vitroC. parvum culture, while the INS-15 protein was expressed in the mid-anterior region of sporozoites and the area of merozoites opposite to the nucleus. Anti-INS-15 domain I antibodies reduced the invasion of C. parvum sporozoites by over 40%. The anterior location of INS-15 in invasion stages and partial reduction of in vitro growth indicate that INS-15 plays some roles in the invasion or early development of C. parvum.
Collapse
|
288
|
Zhang S, Chen L, Li F, Li N, Feng Y, Xiao L. Divergent Copies of a Cryptosporidium parvum-Specific Subtelomeric Gene. Microorganisms 2019; 7:microorganisms7090366. [PMID: 31540508 PMCID: PMC6780254 DOI: 10.3390/microorganisms7090366] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/13/2019] [Accepted: 09/16/2019] [Indexed: 11/16/2022] Open
Abstract
Subtype families of Cryptosporidium parvum differ in host range, with IIa and IId being found in a broad range of animals, IIc in humans, and IIo and IIp in some rodents. Previous studies indicated that the subtelomeric cgd6_5520-5510 gene in C. parvum is lost in many Cryptosporidium species, and could potentially contribute to the broad host range of the former. In this study, we identified the presence of a second copy of the gene in some C. parvum subtype families with a broad host range, and showed sequence differences among them. The sequence differences in the cgd6_5520-5510 gene were not segregated by the sequence type of the 60 kDa glycoprotein gene. Genetic recombination appeared to have played a role in generating divergent nucleotide sequences between copies and among subtype families. These data support the previous conclusion on the potential involvement of the insulinase-like protease encoded by the subtelomeric cgd6_5520-5510 gene in the broad host range of C. parvum IIa and IId subtypes.
Collapse
Affiliation(s)
- Shijing Zhang
- State Key Laboratory of Bioreactor Engineering, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Li Chen
- State Key Laboratory of Bioreactor Engineering, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
| | - Falei Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Na Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Yaoyu Feng
- State Key Laboratory of Bioreactor Engineering, School of Resources and Environmental Engineering, East China University of Science and Technology, Shanghai 200237, China.
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| | - Lihua Xiao
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China.
| |
Collapse
|
289
|
Hatam-Nahavandi K, Ahmadpour E, Carmena D, Spotin A, Bangoura B, Xiao L. Cryptosporidium infections in terrestrial ungulates with focus on livestock: a systematic review and meta-analysis. Parasit Vectors 2019; 12:453. [PMID: 31521186 PMCID: PMC6744657 DOI: 10.1186/s13071-019-3704-4] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 09/05/2019] [Indexed: 12/15/2022] Open
Abstract
Background Cryptosporidium spp. are causative agents of gastrointestinal diseases in a wide variety of vertebrate hosts. Mortality resulting from the disease is low in livestock, although severe cryptosporidiosis has been associated with fatality in young animals. Methods The goal of this systematic review and meta-analysis was to review the prevalence and molecular data on Cryptosporidium infections in selected terrestrial domestic and wild ungulates of the families Bovidae (bison, buffalo, cattle, goat, impala, mouflon sheep, sheep, yak), Cervidae (red deer, roe deer, white-tailed deer), Camelidae (alpaca, camel), Suidae (boar, pig), Giraffidae (giraffes) and Equidae (horses). Data collection was carried out using PubMed, Scopus, Science Direct and Cochran databases, with 429 papers being included in this systematic analysis. Results The results show that overall 18.9% of ungulates from the investigated species were infected with Cryptosporidium spp. Considering livestock species (cattle, sheep, goats, pigs, horses and buffaloes), analysis revealed higher Cryptosporidium infection prevalence in ungulates of the Cetartiodactyla than in those of the Perissodactyla, with cattle (29%) being the most commonly infected farm animal. Conclusions Overall, the investigated domestic ungulates are considered potential sources of Cryptosporidium contamination in the environment. Control measures should be developed to reduce the occurrence of Cryptosporidium infection in these animals. Furthermore, literature on wild populations of the named ungulate species revealed a widespread presence and potential reservoir function of wildlife.
Collapse
Affiliation(s)
| | - Ehsan Ahmadpour
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - David Carmena
- Parasitology Reference and Research Laboratory, National Centre for Microbiology, Carlos III Health Institute, Ctra Majadahonda-Pozuelo Km 2, 28220, Majadahonda, Madrid, Spain
| | - Adel Spotin
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Berit Bangoura
- Department of Veterinary Sciences, College of Agriculture and Natural Resources, University of Wyoming, Laramie, WY, USA
| | - Lihua Xiao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.
| |
Collapse
|
290
|
Xie F, Zhang Z, Zhao A, Jing B, Qi M, Wang R. Molecular characterization of Cryptosporidium and Enterocytozoon bieneusi in Père David's deer ( Elaphurus davidianus) from Shishou, China. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2019; 10:184-187. [PMID: 31667080 PMCID: PMC6812008 DOI: 10.1016/j.ijppaw.2019.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 09/04/2019] [Accepted: 09/05/2019] [Indexed: 12/12/2022]
Abstract
Cryptosporidium and Enterocytozoon bieneusi are important intestinal pathogens that infect humans and various animals. Few reports are available regarding the infections of the two pathogens in Père David's deer. In this study, polymerase chain reaction (PCR) confirmed Cryptosporidium infection in two (1.6%) and E. bieneusi in 45 (35.2%) of 128 fecal samples collected from Père David's deer in the National Nature Reserve of Shishou, Hubei Province, China. C. parvum (n = 1) and Cryptosporidium deer genotype (n = 1) were identified using the small subunit rRNA (SSU rRNA) gene. The C. parvum was further subtyped as IIdA20G1 by sequencing analysis of the 60-kDa glycoprotein (gp60) gene. The identity of E. bieneusi was confirmed by an internal transcribed spacer (ITS) gene; the HLJD-V (n = 42) and MWC_d1 (n = 3) genotypes were identified, with the former clustering in group 2 and the latter in group 1. These data suggest that the Père David's deer were infected with host-specific and/or zoonotic genotypes of these pathogens, implicating Père David's deer could be a potential source of human Cryptosporidium infection. C. parvum subtype IIdA20G1 was firstly identified in Pere David's deer. Genotypes HLJD-V and MWC_d1 were detected from 45 E. bieneusi-positive samples. The present study implicated Père David's deer could be a potential source of human infection.
Collapse
Affiliation(s)
- Fujie Xie
- College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China.,College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Zhenjie Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| | - Aiyun Zhao
- College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Bo Jing
- College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Meng Qi
- College of Animal Science, Tarim University, Alar, Xinjiang, 843300, China
| | - Rongjun Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan, 450002, China
| |
Collapse
|
291
|
Zhang Q, Zhang Z, Ai S, Wang X, Zhang R, Duan Z. Cryptosporidium spp., Enterocytozoon bieneusi, and Giardia duodenalis from animal sources in the Qinghai-Tibetan Plateau Area (QTPA) in China. Comp Immunol Microbiol Infect Dis 2019; 67:101346. [PMID: 31550674 DOI: 10.1016/j.cimid.2019.101346] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 11/30/2022]
Abstract
Cryptosporidium spp., Enterocytozoon bieneusi, and Giardia duodenalis are globally ubiquitous infectious parasitoses in humans and animals. The purpose of the present study was to determine the distribution and genetic diversity of Cryptosporidium spp., Enterocytozoon bieneusi, and Giardia duodenalis from animal sources in different regions of QTPA in China. A total of 405 fresh fecal specimens from seven domestic animals were collected in Qinghai, Yunnan, and Tibet. The overall prevalence of Cryptosporidium spp., E. bieneusi and G. duodenalis was 3.0% (n = 12), 19.8% (n = 80) and 5.7% (n = 23), respectively. Four Cryptosporidium species (C. andersoni, C. xiaoi, C. bovis, and C. ryanae) were identified and C. bovis was firstly identified from camel. Ten genotypes of E. bieneusi were identified in the present study, including eight known genotype (BEB6, CAM2, CHG2, CAM1, COS I, J, CHS8, and CHG3), and two novel genotypes (YAK1 and PN). Genotype CAM2 was detected in horse, yak, and mongolian sheep for the first time and the novel genotype YAK1 was grouped into the human-pathogenic group 1. G. duodenalis assemblage E was common in all animal species, and the human-pathogenic assemblage A was only detected in yaks and camels. Our results elucidate the occurrence and genetic diversity of three zoonotic pathogens from different animals and regions in QTPA, which could act as potential zoonotic reservoirs. More areas and larger number of samples are required to assess the potential risk of cross-species transmission in this region.
Collapse
Affiliation(s)
- Qingxun Zhang
- Genetic Research Center, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China; National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences. Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
| | - Zhichao Zhang
- Genetic Research Center, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
| | - Sitong Ai
- Genetic Research Center, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
| | - Xiaoqi Wang
- Genetic Research Center, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
| | - Ruiying Zhang
- Genetic Research Center, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
| | - Ziyuan Duan
- Genetic Research Center, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China.
| |
Collapse
|
292
|
Gharpure R, Perez A, Miller AD, Wikswo ME, Silver R, Hlavsa MC. Cryptosporidiosis outbreaks — United States, 2009–2017. Am J Transplant 2019. [DOI: 10.1111/ajt.15557] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Radhika Gharpure
- Division of Foodborne, Waterborne, and Environmental Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC Atlanta Georgia
- Epidemic Intelligence Service CDC Atlanta Georgia
| | - Ariana Perez
- Division of Foodborne, Waterborne, and Environmental Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC Atlanta Georgia
- Oak Ridge Institute for Science and Education Oak Ridge Tennessee
| | - Allison D. Miller
- Division of Foodborne, Waterborne, and Environmental Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC Atlanta Georgia
- Eagle Medical Services, LLC Atlanta Georgia
| | - Mary E. Wikswo
- Division of Viral Diseases National Center for Immunization and Respiratory Diseases CDC Atlanta Georgia
| | - Rachel Silver
- Division of Foodborne, Waterborne, and Environmental Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC Atlanta Georgia
- Oak Ridge Institute for Science and Education Oak Ridge Tennessee
| | - Michele C. Hlavsa
- Division of Foodborne, Waterborne, and Environmental Diseases National Center for Emerging and Zoonotic Infectious Diseases CDC Atlanta Georgia
| |
Collapse
|
293
|
Marquis ND, Bishop TJ, Record NR, Countway PD, Fernández Robledo JA. Molecular Epizootiology of Toxoplasma gondii and Cryptosporidium parvum in the Eastern Oyster ( Crassostrea virginica) from Maine (USA). Pathogens 2019; 8:E125. [PMID: 31412532 PMCID: PMC6789735 DOI: 10.3390/pathogens8030125] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/01/2019] [Accepted: 08/08/2019] [Indexed: 11/17/2022] Open
Abstract
Shellfish are known as a potential source of Toxoplasma gondii (responsible for toxoplasmosis), and Cryptosporidium parvum, which is one of the major causes of gastroenteritis in the world. Here we performed a comprehensive qPCR-based monthly survey for T. gondii and C. parvum during 2016 and 2017 in oysters (Crassostrea virginica) (n = 1440) from all six sites along the coast of Maine (USA). Pooled samples (mantle, gills, and rectum) from individual oysters were used for DNA extraction and qPCR. Our study resulted in detections of qPCR positives oysters for T. gondii and C. parvum at each of the six sites sampled (in 31% and 10% of total oysters, respectively). The prevalence of T. gondii was low in 2016, and in September 2017 several sites peaked in prevalence with 100% of the samples testing positive. The prevalence of C. parvum was very low except in one estuarine location (Jack's Point) in June 2016 (58%), and in October of 2016, when both prevalence and density of C. parvum at most of the sampling sites were among the highest values detected. Statistical analysis of environmental data did not identify clear drivers of retention, but there were some notable statistically significant patterns including current direction and nitrate along with the T. gondii prevalence. The major C. parvum retention event (in October 2016) corresponded with the month of highest dissolved oxygen measurements as well as a shift in the current direction revealed by nearby instrumentation. This study may guide future research to locate any contributing parasite reservoirs and evaluate the potential risk to human consumption.
Collapse
Affiliation(s)
| | - Theodore J Bishop
- Bigelow Laboratory for Ocean Sciences, Boothbay, ME 04544, USA
- Southern Maine Community College, South Portland, ME 04106, USA
| | | | | | | |
Collapse
|
294
|
Seixas MD, Taroda A, Cardim ST, Sasse JP, Martins TA, Martins FDC, Minutti AF, Vidotto O, Barros LDD, Garcia JL. First study of Cryptosporidium spp. occurrence in eared doves (Zenaida auriculata). ACTA ACUST UNITED AC 2019; 28:489-492. [PMID: 31411313 DOI: 10.1590/s1984-29612019016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 02/27/2019] [Indexed: 11/22/2022]
Abstract
Cryptosporidium is a protozoan parasite with a wide range of hosts, including humans. However, only a few Cryptosporidium species have been described in birds (C. meleagridis, C. baileyi, C. galli and C. avium). The aim of this study was to investigate the occurrence of Cryptosporidium spp. in feces of eared doves (Zenaida auriculata), followed by molecular characterization of the parasite. A total of 196 animals of both sexes were trap-captured; the animals were culled and the intestinal contents were collected for DNA extraction. After extraction, a nested-PCR (nPCR), which amplifies a fragment of the 18S rRNA gene of Cryptosporidium spp., was performed. The amplicons obtained were purified and sequenced. PCR analysis revealed that 30 animals (15.3%) were positive for Cryptosporidium spp. There was no significant sex-dependent enrichment of Cryptosporidium occurrence (p > 0.05). Only 15 out of the 30 positive samples were successfully sequenced and their species determined, of which, 13 (86.7%) and 2 (13.3%) were C. meleagridis and C. galli, respectively. Herein, we present for the first time a molecular characterization of Cryptosporidium from feces of eared doves (Z. auriculata) and propose that these birds are a potential source of C. meleagridis infection in humans.
Collapse
Affiliation(s)
- Mércia de Seixas
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | - Alessandra Taroda
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | - Sérgio Tosi Cardim
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | - João Pedro Sasse
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | - Thais Agostinho Martins
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | - Felippe Danyel Cardoso Martins
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | - Ana Flávia Minutti
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | - Odilon Vidotto
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | - Luiz Daniel de Barros
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| | - João Luis Garcia
- Departamento de Medicina Veterinária Preventiva, Laboratório de Protozoologia Animal, Universidade Estadual de Londrina - UEL, Londrina, PR, Brasil
| |
Collapse
|
295
|
Yamashiro S, Foco MLR, Pineda CO, José J, Nour EAA, Siqueira-Castro ICV, Franco RMB. Giardia spp. and Cryptosporidium spp. removal efficiency of a combined fixed-film system treating domestic wastewater receiving hospital effluent. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:22756-22771. [PMID: 31172433 DOI: 10.1007/s11356-019-05500-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 05/16/2019] [Indexed: 06/09/2023]
Abstract
Giardia and Cryptosporidium have caused numerous outbreaks of diarrhea as a result of the ingestion of water contaminated with sewage. In Brazil, the efficiency of Giardia and Cryptosporidium removal by combined fixed-film systems has rarely been studied. The aims of the present study were therefore to verify the removal efficiency of Giardia and Cryptosporidium by a combined system (anaerobic/anoxic filter and aerated submerged biofilter) and to perform the genetic characterization of these parasites. The (oo)cysts were detected by centrifuge concentration and membrane filtration from raw sewage, effluents, adhered biomass, and sludge samples. Immunofluorescence assay and differential interference contrast microscopy were used for the visualization of the (oo)cysts. Nested PCR was applied to confirm Giardia and Cryptosporidium. Giardia and Cryptosporidium were detected in 27% and 5.5% of the 144 analyzed samples of raw sewage and effluents, respectively. A total of 33,000 cysts/L were recovered in the adhered biomass samples (n = 25) from different points of the aerated submerged biofilter, while 6000 oocysts/L were registered in a single point. An average of 11,800 cysts/L were found in the sludge samples (n = 5). The combined system exhibited a removal efficiency of Giardia cysts of 1.8 ± 1.0 log removal. The C and BIV assemblages of Giardia were identified in the raw sewage while AII was found in the treated effluent sample. It was not possible to calculate the removal efficiency of Cryptosporidium oocysts by the combined system. The combined system exhibited some potential as a suitable treatment for the removal of parasites from sewage.
Collapse
Affiliation(s)
- Sandra Yamashiro
- Laboratory of Protozoology, Department of Animal Biology, Institute of Biology, University of Campinas (UNICAMP), Monteiro Lobato Street, n°255, Campinas, São Paulo State, Brazil
| | - Mário Luiz Rodrigues Foco
- Department of Sanitation and Environment, School of Civil Engineering, Architecture and Urban Design, University of Campinas (UNICAMP), Campinas, São Paulo State, Brazil
| | - Carolina Ortiz Pineda
- Laboratory of Protozoology, Department of Animal Biology, Institute of Biology, University of Campinas (UNICAMP), Monteiro Lobato Street, n°255, Campinas, São Paulo State, Brazil
| | - Juliana José
- Department of Genetic and Evolution, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo State, Brazil
| | - Edson Aparecido Abdul Nour
- Department of Sanitation and Environment, School of Civil Engineering, Architecture and Urban Design, University of Campinas (UNICAMP), Campinas, São Paulo State, Brazil
| | - Isabel Cristina Vidal Siqueira-Castro
- Laboratory of Protozoology, Department of Animal Biology, Institute of Biology, University of Campinas (UNICAMP), Monteiro Lobato Street, n°255, Campinas, São Paulo State, Brazil
| | - Regina Maura Bueno Franco
- Laboratory of Protozoology, Department of Animal Biology, Institute of Biology, University of Campinas (UNICAMP), Monteiro Lobato Street, n°255, Campinas, São Paulo State, Brazil.
| |
Collapse
|
296
|
Mammeri M, Chevillot A, Chenafi I, Thomas M, Julien C, Vallée I, Polack B, Follet J, Adjou KT. Molecular characterization of Cryptosporidium isolates from diarrheal dairy calves in France. VETERINARY PARASITOLOGY- REGIONAL STUDIES AND REPORTS 2019; 18:100323. [PMID: 31796198 PMCID: PMC7103931 DOI: 10.1016/j.vprsr.2019.100323] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 12/13/2022]
Abstract
Cryptosporidium is an obligate intracellular protist parasite infecting a wide range of vertebrate hosts and causes significant intestinal disease in both animals and humans, as some species are zoonotic. Cattle and especially calves have been identified as one of the most common reservoirs of this protist. However, little is known about the genetics of Cryptosporidium in calves in some regions of France. The aim of this study was to detect and isolate Cryptosporidium spp. in faecal samples from naturally infected pre-weaned calves (≤45 days-old) in France. A total of 35 diarrhoeic pre-weaned calf faecal samples were collected from 26 dairy cattle farms in six departments (French administrative provinces). Cryptosporidium presence was established by microscopically screening samples for oocystes with an immunofluorescent (DFA) staining method. DFA-positive samples were then analysed by PCR-RFLP and 18S rRNA gene sequencing to determine species. Cryptosporidium parvum-positive samples were subtyped via nested PCR analysis of a partial fragment of the 60 kDa glycoprotein (gp60) gene product. Data were then integrated into phylogenetic tree analysis. DFA revealed the presence of Cryptosporidium oocysts in 31 out of 35 (88%) samples. Combined with 18S rRNA gene analysis results, C. parvum was detected in 30 samples. Subtyping analysis in 27/30 samples (90%) of the C. parvum isolates revealed two zoonotic subtype families, IIa (24/27) and IId (3/27). Four subtypes were recognised within the subtype family IIa, including the hypertransmissible IIaA15G2R1 subtype that is the most frequently reported worldwide (21/27), IIaA17G3R1 (1/27), IIaA17G1R1 (1/27), and IIaA19G1R1 (1/27). Two subtypes were recognised within the IId subtype family including IIdA22G1 (2/27) and IIdA27G1 (1/27). These findings illustrate the high occurrence of Cryptosporidium in calves in dairy herds and increase the diversity of molecularly characterised C. parvum isolates with the first description of IIaA17G3R1, IIaA19G1R1, and IId subtypes in France. The presence of zoonotic C. parvum subtype families (IIa, IId) in this study suggests that pre-weaned calves are likely to be a significant reservoir of zoonotic C. parvum, and highlights the importance of animal to human cryptosporidiosis transmission risk. Further molecular studies in calves and small ruminants from other French regions are required to better understand the epidemiology of cryptosporidiosis in France. Faecal samples from pre-weaned diarrheal calves were analysed Cryptosporidium spp. was detected in 30 samples out of 35. C. parvum was the only species identified Two zoonotic subtype families were identified: IIa and IId The hyper-transmissible IIaA15G2R1 was the dominant C. parvum subtype
Collapse
Affiliation(s)
- Mohamed Mammeri
- UMR BIPAR, Ecole Nationale Vétérinaire d'Alfort, ANSES, INRA, Université Paris-Est, Maisons-Alfort F-94700, France; Phileo Lesaffre Animal Care, 137 rue Gabriel Péri, 59 700 Marcq-en-Barœul, France
| | - Aurélie Chevillot
- UMR BIPAR, ANSES, Ecole Nationale Vétérinaire d'Alfort, INRA, Université Paris-Est, Animal Health Laboratory, Maisons-Alfort F-94700, France
| | - Ilham Chenafi
- UMR BIPAR, Ecole Nationale Vétérinaire d'Alfort, ANSES, INRA, Université Paris-Est, Maisons-Alfort F-94700, France
| | - Myriam Thomas
- UMR BIPAR, ANSES, Ecole Nationale Vétérinaire d'Alfort, INRA, Université Paris-Est, Animal Health Laboratory, Maisons-Alfort F-94700, France
| | - Christine Julien
- Phileo Lesaffre Animal Care, 137 rue Gabriel Péri, 59 700 Marcq-en-Barœul, France
| | - Isabelle Vallée
- UMR BIPAR, ANSES, Ecole Nationale Vétérinaire d'Alfort, INRA, Université Paris-Est, Animal Health Laboratory, Maisons-Alfort F-94700, France
| | - Bruno Polack
- UMR BIPAR, Ecole Nationale Vétérinaire d'Alfort, ANSES, INRA, Université Paris-Est, Maisons-Alfort F-94700, France
| | - Jérôme Follet
- Université de Lille, CNRS, ISEN, UMR 8520-IEMN, Lille 59000, France; ISA-YNCREA Hauts de France, 59046 Lille Cedex, France
| | - Karim Tarik Adjou
- UMR BIPAR, Ecole Nationale Vétérinaire d'Alfort, ANSES, INRA, Université Paris-Est, Maisons-Alfort F-94700, France.
| |
Collapse
|
297
|
Chen L, Hu S, Jiang W, Zhao J, Li N, Guo Y, Liao C, Han Q, Feng Y, Xiao L. Cryptosporidium parvum and Cryptosporidium hominis subtypes in crab-eating macaques. Parasit Vectors 2019; 12:350. [PMID: 31307508 PMCID: PMC6631616 DOI: 10.1186/s13071-019-3604-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/06/2019] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Non-human primates are often infected with human-pathogenic Cryptosporidium hominis subtypes, but rarely with Cryptosporidium parvum. In this study, 1452 fecal specimens were collected from farmed crab-eating macaques (Macaca fascicularis) in Hainan, China during the period April 2016 to January 2018. These specimens were analyzed for Cryptosporidium species and subtypes by using PCR and sequence analysis of the 18S rRNA and 60 kDa glycoprotein (gp60) genes, respectively. RESULTS Altogether, Cryptosporidium was detected using 18S rRNA-based PCR in 132 (9.1%) sampled animals, with significantly higher prevalence in females (12.5% or 75/599 versus 6.1% or 43/706), younger animals (10.7% or 118/1102 in monkeys 1-3-years-old versus 4.0% or 14/350 in those over 3-years-old) and animals with diarrhea (12.6% or 46/365 versus 7.9% or 86/1087). Four Cryptosporidium species were identified, namely C. hominis, C. parvum, Cryptosporidium muris and Cryptosporidium ubiquitum in 86, 30, 15 and 1 animal, respectively. The identified C. parvum, C. hominis and C. ubiquitum were further subtyped by using gp60 PCR. Among them, C. parvum belonged to subtypes in two known subtype families, namely IIoA14G1 (in 18 animals) and IIdA19G1 (in 2 animals). In contrast, C. hominis mostly belonged to two new subtype families Im and In, which are genetically related to Ia and Id, respectively. The C. hominis subtypes identified included ImA18 (in 38 animals), InA14 (in six animals), InA26 (in six animals), InA17 (in one animal) and IiA17 (in three animals). The C. ubiquitum isolates belonged to subtype family XIId. By subtype, ImA18 and IIoA14G1 were detected in animals with diarrhea whereas the remaining ones were mostly found in asymptomatic animals. Compared with C. parvum and C. muris, higher oocyst shedding intensity was observed in animals infected with C. hominis, especially those infected with the Im subtype family. CONCLUSIONS Data from the study suggest that crab-eating macaques are infected with diverse C. parvum and C. hominis subtypes. The C. parvum IIo subtype family previously seen in rodents in China has apparently expanded its host range.
Collapse
Affiliation(s)
- Li Chen
- State Key Laboratory of Bioreactor Engineering, School of Resource and Environmental, East China University of Science and Technology, Shanghai, 200237 China
| | - Suhui Hu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 China
| | - Wen Jiang
- State Key Laboratory of Bioreactor Engineering, School of Resource and Environmental, East China University of Science and Technology, Shanghai, 200237 China
| | - Jianguo Zhao
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou, 570228 Hainan China
| | - Na Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 China
| | - Yaqiong Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 China
| | - Chenghong Liao
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou, 570228 Hainan China
| | - Qian Han
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou, 570228 Hainan China
| | - Yaoyu Feng
- State Key Laboratory of Bioreactor Engineering, School of Resource and Environmental, East China University of Science and Technology, Shanghai, 200237 China
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 China
| | - Lihua Xiao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642 China
| |
Collapse
|
298
|
Lichtmannsperger K, Hinney B, Joachim A, Wittek T. Molecular characterization of Giardia intestinalis and Cryptosporidium parvum from calves with diarrhoea in Austria and evaluation of point-of-care tests. Comp Immunol Microbiol Infect Dis 2019; 66:101333. [PMID: 31437689 PMCID: PMC7112675 DOI: 10.1016/j.cimid.2019.101333] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 07/03/2019] [Accepted: 07/10/2019] [Indexed: 02/02/2023]
Abstract
Giardia intestinalis (48/177) and Cryptosporidium parvum (98/177) occur in Austrian calves. C. parvum genotypes IIaA15G2R1, IIaA19G2R2, IIaA21G2R1 and IIaA14G1R1 were found. Giardia intestinalis assemblage E and a single sample of assemblage A were found. Cryptosporidium was detected mostly in the first two weeks of age (72/102). Point-of-care test validity varied greatly for Giardia and Cryptosporidium.
To obtain information about the occurrence and genotype distribution of G. intestinalis and C. parvum in Austrian cattle, faecal samples from diarrhoeic calves younger than 180 days of age originating from 70 farms were examined. Of the 177 faecal samples, 27.1% were positive for Giardia cysts (immunofluorescence microscopy) and 55.4% for Cryptosporidium oocysts (phase-contrast microscopy). Positive samples were characterized by nested PCR for Giardia, 83.3% (triosephosphate isomerase; tpi) and 89.6% (β-giardin; bg) were positive, while the Cryptosporidium nested PCR returned 92.5% (60-kDa glycoprotein) positive results. Sequence analysis revealed one assemblage A-positive sample and 30 (bg) respectively 29 (tpi) assemblage E-positive samples for G. intestinalis. For C. parvum four subtypes within the IIa family (IIaA15G2R1, n = 29; IIaA19G2R2, n = 3; IIaA21G2R1, n = 2; IIaA14G1R1, n = 1) could be differentiated. Validation of two immunochromatographic point-of-care tests resulted in a sensitivity of 29.2% and 77.6%; a specificity of 98.4% and 91.1% for the detection of Giardia intestinalis and Cryptosporidium parvum, respectively. Results confirm the widespread occurrence of both protozoa in diarrhoeic calves in Austria.
Collapse
Affiliation(s)
- Katharina Lichtmannsperger
- University Clinic for Ruminants, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinaerplatz 1, A-1210 Wien, Austria
| | - Barbara Hinney
- Institute of Parasitology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, A-1210 Wien, Austria
| | - Anja Joachim
- Institute of Parasitology, Department of Pathobiology, University of Veterinary Medicine Vienna, Veterinaerplatz 1, A-1210 Wien, Austria.
| | - Thomas Wittek
- University Clinic for Ruminants, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinaerplatz 1, A-1210 Wien, Austria
| |
Collapse
|
299
|
Li F, Su J, Chahan B, Guo Q, Wang T, Yu Z, Guo Y, Li N, Feng Y, Xiao L. Different distribution of Cryptosporidium species between horses and donkeys. INFECTION GENETICS AND EVOLUTION 2019; 75:103954. [PMID: 31295579 DOI: 10.1016/j.meegid.2019.103954] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/03/2019] [Accepted: 07/05/2019] [Indexed: 02/01/2023]
Abstract
Few studies have been conducted on the distribution of Cryptosporidium species and subtypes in equine animals. In this study, 878 stool specimens were collected during 2015-2019 from 551 donkeys and 327 horses in Shandong, Xinjiang, and Inner Mongolia, China and screened for Cryptosporidium spp. by PCR analysis of the small subunit rRNA gene. The Cryptosporidium species presented were identified by sequence analysis of the PCR products and subtyped by sequence analysis of the 60 kDa glycoprotein gene. The infection rates of Cryptosporidium spp. in horses and donkeys were 3.1% (10/327) and 14.5% (80/551), respectively. Four Cryptosporidium species/genotypes were identified, including C. parvum (in 5 horses), C. hominis (in 75 donkeys), Cryptosporidium horse genotype (in 5 horses and 4 donkeys) and a new genotype that is genetically related to Cryptosporidium mink genotype (in 1 donkey). All C. parvum isolates were subtyped as IIdA19G1, C. hominis as IkA16G1, and horse genotype as VIaA15G4. Data from this study indicate that four Cryptosporidium species are circulating in horses and donkeys in the study areas, with C. hominis as a dominant Cryptosporidium species in only donkeys. Attention should be paid to reduce the transmission of these zoonotic Cryptosporidium spp.
Collapse
Affiliation(s)
- Falei Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Jiayuan Su
- State Key Laboratory of Bioreactor Engineering, School of Resource and Environmental, East China University of Science and Technology, Shanghai 200237, China
| | - Bayin Chahan
- Department of Animal Parasitology, Xinjiang Agricultural University School of Veterinary Medicine, Uygur, Xinjiang 830052, China
| | - Qingyong Guo
- Department of Animal Parasitology, Xinjiang Agricultural University School of Veterinary Medicine, Uygur, Xinjiang 830052, China
| | - Tao Wang
- National Engineering Research Center for Gelatin-based Traditional Chinese Medicine, Dong-E-E-Jiao Co. Ltd., Done-E Country, Shandong 252201, China
| | - Zhengjie Yu
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Yaqiong Guo
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Na Li
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong 510642, China
| | - Yaoyu Feng
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong 510642, China.
| | - Lihua Xiao
- Key Laboratory of Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong 510642, China.
| |
Collapse
|
300
|
Thompson RCA, Ash A. Molecular epidemiology of Giardia and Cryptosporidium infections - What's new? INFECTION GENETICS AND EVOLUTION 2019; 75:103951. [PMID: 31279819 DOI: 10.1016/j.meegid.2019.103951] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/30/2019] [Accepted: 07/02/2019] [Indexed: 12/22/2022]
Abstract
New information generated since 2016 from the application of molecular tools to infections with Giardia and Cryptosporidium is critically summarised. In the context of molecular epidemiology, nomenclature, taxonomy, in vitro culture, detection, zoonoses, population genetics and pathogenicity, are covered. Whole genome sequencing has had the greatest impact in the last three years. Future advances will provide a much better understanding of the zoonotic potential of both parasites, their diversity and how this is linked to pathogenesis in different hosts.
Collapse
Affiliation(s)
- R C A Thompson
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA 6150, Australia.
| | - A Ash
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA 6150, Australia
| |
Collapse
|