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Magalhães de Almeida T, Neto IR, de Oliveira Brandão Y, Molento MB. Geographic expansion of Fasciola hepatica (Linnaeus, 1758) due to changes in land use and cover in Brazil. Int J Parasitol 2024; 54:201-212. [PMID: 38160740 DOI: 10.1016/j.ijpara.2023.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/05/2023] [Accepted: 12/22/2023] [Indexed: 01/03/2024]
Abstract
Fasciolosis is caused by parasites of the genus Fasciola, affecting animals and humans worldwide. In South America, the disease is a result of infection with Fasciola hepatica and although animal infections are more frequently reported, the full extent of the impact on human health due to underdiagnosis remains uncertain. This study analyzed changes in land use and the distribution of F. hepatica in bovine livers in Brazil over 18 years. Data on land use and land cover were collected from the Mapbiomas Project. Data on 414,481,963 slaughtered cattle and condemned livers due to F. hepatica infection were obtained from 4,433 municipalities. Joinpoint analysis was used to study the time series, and the Susceptible-Infected-Recovered (SIR) model was utilized to explore the behavior of F. hepatica infection. In the North, pasture areas significantly increased (P = 0.000001), while forested areas decreased (P = 0.000001). The midwestern and northern regions concentrated the highest number (>290 million) of cattle slaughtered in Brazil. More than 2 million bovine livers were infected by F. hepatica. The infected cattle originated from 194 municipalities in 2002, increasing to 747 in 2020. We consider that the changes in land use and intense cattle transportation may have caused the expansion of F. hepatica. The SIR model analyzed the spread of the disease looking at all six biomes: Caatinga, Amazon Forest, Cerrado, Pantanal, Atlantic Forest, and Pampa. Moreover, this infection not only threatens the health of animals but is also a major concern to biodiversity and vulnerable human communities in South America. Emblematic biomes such as the Amazon basin already face challenges with logging, desertification, and loss of biodiversity. Therefore, strategies for mitigating infection should include controlling illegal pasture areas, establishing health inspections of animal transport, quarantine of newly arrived animals, and livestock zoning, as well as clear One Health policies.
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Affiliation(s)
- Thayany Magalhães de Almeida
- Laboratory of Veterinary Clinical Parasitology, Federal University of Paraná, R: dos Funcionários, 1540, Curitiba, PR CEP: 80.035-050, Brazil
| | - Irineu Romero Neto
- Laboratory of Veterinary Clinical Parasitology, Federal University of Paraná, R: dos Funcionários, 1540, Curitiba, PR CEP: 80.035-050, Brazil
| | - Yara de Oliveira Brandão
- Laboratory of Veterinary Clinical Parasitology, Federal University of Paraná, R: dos Funcionários, 1540, Curitiba, PR CEP: 80.035-050, Brazil
| | - Marcelo Beltrão Molento
- Laboratory of Veterinary Clinical Parasitology, Federal University of Paraná, R: dos Funcionários, 1540, Curitiba, PR CEP: 80.035-050, Brazil.
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Dey AR, Begum N, Anisuzzaman, Islam MT, Alam MZ. A large-scale epidemiological investigation on trematode infections in small ruminants in Bangladesh. Vet Med Sci 2022; 8:1219-1228. [PMID: 35113500 PMCID: PMC9122409 DOI: 10.1002/vms3.748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Background The important trematode species in small ruminants: Paramphistomum sp., Fasciola spp. and Schistosoma spp. seriously affect the productivity of domestic ruminants in endemic areas. Methods In the present study, we identified the potential risk factors associated with trematodes infections in small ruminants in seven topographic zones of Bangladesh using simple sedimentation and modified Stoll’ ova counting technique. Results A total of 2440 samples were examined, where 965 were found positive with one or more trematode species with an overall prevalence of 39.5% (95% CI, 37.6%–41.5%) and intensity of infection was 264.77 ± 9.86 egg per gram of faeces. Three trematode species were identified namely Paramphistomum sp. (34.1%, 32.2%–36.0%), Fasciola spp. (7.5%, 6.5%–8.6%) and Schistosoma spp. (2.7%, 2.1%–3.5%). Prevalence of co‐infection was 4.8%. The spatial distribution of trematode infections varied from 29.5% to 53.6%. Univariate analysis revealed that physiological condition of females, body condition, farming system, deworming and season were significantly (p < 0.05) associated with trematodes infections in small ruminants. By multiple logistic regression model, three factors such as physiological condition of females (pregnant and lactating), poor body condition and animals without deworming were identified as potential risk factors for trematodes infection in small ruminants. Conclusion Trematode infections are prevalent in the study areas and Paramphistomum sp. is most common in different areas among the identified trematodes species. Government should take necessary action to appraise an effective control strategy of trematode infections in small ruminants.
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Affiliation(s)
- Anita Rani Dey
- Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Nurjahan Begum
- Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Anisuzzaman
- Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Md Taohidul Islam
- Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
| | - Mohammad Zahangir Alam
- Department of Parasitology, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh, Bangladesh
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Alba A, Vázquez AA, Sánchez J, Gourbal B. Immunological Resistance of Pseudosuccinea columella Snails From Cuba to Fasciola hepatica (Trematoda) Infection: What We Know and Where We Go on Comparative Molecular and Mechanistic Immunobiology, Ecology and Evolution. Front Immunol 2022; 13:794186. [PMID: 35140717 PMCID: PMC8818719 DOI: 10.3389/fimmu.2022.794186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 01/03/2022] [Indexed: 11/13/2022] Open
Abstract
One of the most interesting biological models is that of snail–trematode interactions, many of which ultimately result in the transmission of several important diseases, particularly in the tropics. Herein, we review the scientific advances on a trematode–snail system in which certain populations of Pseudosuccinea columella (a common host species for trematodes) have been demonstrated naturally-resistant to Fasciola hepatica, in association with an effective encapsulation of the parasite by innate immune cells of the host, the hemocytes. Emphasis is made on the molecular and immunological features characterizing each P. columella phenotype in relation to their anti-parasitic competence, their distinctive ecological patterns and the existence of a significant cost of resistance. An integrative overview of the resistance to F. hepatica through comparative immunobiology, genetics and ecology is presented to hypothesize on the possible origins and evolution of this phenomenon and to postulate significant roles for parasite mediated-selection and environmental factors in shaping and maintaining the resistant phenotype in the field. Lastly, clues into future experimental perspectives to deeply characterize the interplay between P. columella and F. hepatica and the immunobiology of the resistance are also included. The advances revised in the present paper are only beginning to unravel mechanisms of anti-parasite innate defense responses and their evolutionary bases, and can facilitate the development of prospective approaches towards practical applications of P. columella resistance.
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Affiliation(s)
- Annia Alba
- Centro de Investigaciones, Diagnóstico y Referencia, Instituto “Pedro Kourí” de Medicina Tropical, La Habana, Cuba
- *Correspondence: Benjamin Gourbal, ; Annia Alba,
| | - Antonio A. Vázquez
- Centro de Investigaciones, Diagnóstico y Referencia, Instituto “Pedro Kourí” de Medicina Tropical, La Habana, Cuba
| | - Jorge Sánchez
- Centro de Investigaciones, Diagnóstico y Referencia, Instituto “Pedro Kourí” de Medicina Tropical, La Habana, Cuba
| | - Benjamin Gourbal
- IHPE, Univ Montpellier, CNRS, IFREMER, Univ Perpignan Via Domitia, Perpignan, France
- *Correspondence: Benjamin Gourbal, ; Annia Alba,
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The effect of landscape and human settlement on the genetic differentiation and presence of Paragonimus species in Mesoamerica. Int J Parasitol 2021; 52:13-21. [PMID: 34371019 DOI: 10.1016/j.ijpara.2021.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 05/29/2021] [Accepted: 05/31/2021] [Indexed: 11/21/2022]
Abstract
Foodborne diseases are a neglected research area, and despite the existence of many tools for diagnosis and genetic studies, very little is known about the effect of the landscape on the genetic diversity and presence of parasites. One of these foodborne disease is paragonimiasis, caused by trematodes of the genus Paragonimus, which is responsible for a high number of infections in humans and wild animals. The main Paragonimus sp reported in Mesoamerica is Paragonimus mexicanus, yet there are doubts about its correct identification as a unique species throughout the region. This, together with a lack of detailed knowledge about their ecology, evolution and differentiation, may complicate the implementation of control strategies across the Mesoamerican region. We had the goal of delimiting the species of P. mexicanus found throughout Mesoamerica and determining the effect of landscape and geology on the diversity and presence of the parasite. We found support for the delimitation of five genetic groups. The genetic differentiation among these groups was positively affected by elevation and the isolation of river basins, while the parasite's presence was affected negatively only by the presence of human settlements. These results suggest that areas with lower elevation, connected rivers basins, and an absence of human settlements have low genetic differentiation and high P. mexicanus presence, which may increase the risk of Paragonimus infection. These demonstrate the importance of accurate species delimitation and consideration of the effect of landscape on Paragonimus in the proposal of adequate control strategies. However, other landscape variables cannot be discarded, including temperature, rainfall regime, and spatial scale (local, landscape and regional). These additional variables were not explored here, and should be considered in future studies.
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Alba A, Vazquez AA, Hurtrez-Boussès S. Towards the comprehension of fasciolosis (re-)emergence: an integrative overview. Parasitology 2021; 148:385-407. [PMID: 33261674 PMCID: PMC11010171 DOI: 10.1017/s0031182020002255] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/24/2020] [Accepted: 11/24/2020] [Indexed: 02/06/2023]
Abstract
The increasing distribution and prevalence of fasciolosis in both human and livestock are concerning. Here, we examine the various types of factors influencing fasciolosis transmission and burden and the interrelations that may exist between them. We present the arsenal of molecules, 'adjusting' capabilities and parasitic strategies of Fasciola to infect. Such features define the high adaptability of Fasciola species for parasitism that facilitate their transmission. We discuss current environmental perturbations (increase of livestock and land use, climate change, introduction of alien species and biodiversity loss) in relation to fasciolosis dynamics. As Fasciola infection is directly and ultimately linked to livestock management, living conditions and cultural habits, which are also changing under the pressure of globalization and climate change, the social component of transmission is also discussed. Lastly, we examine the implication of increasing scientific and political awareness in highlighting the current circulation of fasciolosis and boosting epidemiological surveys and novel diagnostic techniques. From a joint perspective, it becomes clear that factors weight differently at each place and moment, depending on the biological, environmental, social and political interrelating contexts. Therefore, the analyses of a disease as complex as fasciolosis should be as integrative as possible to dissect the realities featuring each epidemiological scenario. Such a comprehensive appraisal is presented in this review and constitutes its main asset to serve as a fresh integrative understanding of fasciolosis.
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Affiliation(s)
- Annia Alba
- Centro de Investigaciones, Diagnóstico y Referencia, Instituto de Medicina Tropical ‘Pedro Kourí’, Havana, Cuba
| | - Antonio A. Vazquez
- Centro de Investigaciones, Diagnóstico y Referencia, Instituto de Medicina Tropical ‘Pedro Kourí’, Havana, Cuba
- MIVEGEC, IRD, CNRS, Université de Montpellier, Montpellier, France
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Vázquez AA, de Vargas M, Alba A, Sánchez J, Alda P, Sabourin E, Vittecoq M, Alarcón-Elbal PM, Pointier JP, Hurtrez-Boussès S. Reviewing Fasciola hepatica transmission in the West Indies and novel perceptions from experimental infections of sympatric vs. allopatric snail/fluke combinations. Vet Parasitol 2019; 275:108955. [DOI: 10.1016/j.vetpar.2019.108955] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 10/03/2019] [Accepted: 10/05/2019] [Indexed: 11/27/2022]
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Mas-Coma S, Valero MA, Bargues MD. Fascioliasis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1154:71-103. [PMID: 31297760 DOI: 10.1007/978-3-030-18616-6_4] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Fascioliasis is a major parasitic disease caused by the digenetic trematodes Fasciola hepatica and Fasciola gigantica. The disease is a well-known veterinary problem of worldwide distribution. Fascioliasis is the vector-borne parasitic disease presenting the widest latitudinal, longitudinal, and altitudinal distribution known at present. In the last two decades, many surveys have shown it to be an important public health problem as well, including estimations of 2.4 million, up to 17 million people, or even higher depending on the hitherto unknown situations mainly in several regions of Asia and Africa. In recent years, the increasing number of human case reports in many countries of the five continents and the results of studies on pathogenicity and immunity, mainly regarding the chronic period of the disease, were the reasons why it was decided to no longer consider fascioliasis merely a secondary zoonotic disease but an important human parasitic disease. In this chapter, we review the most relevant features in relation to fascioliasis, including from the most traditional to the most innovative aspects.
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Affiliation(s)
- Santiago Mas-Coma
- Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain.
| | - Mª Adela Valero
- Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
| | - Mª Dolores Bargues
- Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain
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Sabourin E, Alda P, Vázquez A, Hurtrez-Boussès S, Vittecoq M. Impact of Human Activities on Fasciolosis Transmission. Trends Parasitol 2018; 34:891-903. [PMID: 30195634 DOI: 10.1016/j.pt.2018.08.004] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 07/27/2018] [Accepted: 08/05/2018] [Indexed: 12/17/2022]
Abstract
Fasciolosis is a worldwide disease caused by the liver fluke Fasciola spp. This food- and water-borne disease is a major public health and veterinary issue. It is currently (re)emerging in several regions mainly due to the rapid evolution of human activities. This article reviews the current knowledge of the impact of irrigation-system management, livestock management, and human diet and hygiene habits on the emergence of fasciolosis. We also identify the gaps in this knowledge and the possible solutions for limiting these impacts. Integrated control seems to be the most effective solution for controlling fasciolosis, because it enables monitoring, prevention, and rapid action in case of the (re)emergence of the disease.
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Affiliation(s)
- Emeline Sabourin
- Institut de recherche de la Tour du Valat, Arles, France; MIVEGEC, University of Montpellier, CNRS, IRD, Montpellier, France.
| | - Pilar Alda
- MIVEGEC, University of Montpellier, CNRS, IRD, Montpellier, France; Universidad Nacional del Sur, Bahía Blanca, Argentina
| | - Antonio Vázquez
- Instituto de Medicina Tropical Pedro Kourí, Ciudad de La Habana, Cuba
| | - Sylvie Hurtrez-Boussès
- MIVEGEC, University of Montpellier, CNRS, IRD, Montpellier, France; Département de Biologie-Ecologie, Faculté des Sciences, University of Montpellier, Montpellier, France
| | - Marion Vittecoq
- Institut de recherche de la Tour du Valat, Arles, France; MIVEGEC, University of Montpellier, CNRS, IRD, Montpellier, France
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Alba A, Vázquez AA, Sánchez J, Fraga J, Hernández H, Martínez E, Marcet R, Figueredo M, Sarracent J. Assessment of the FasciMol-ELISA in the detection of the trematode Fasciola hepatica in field-collected Galba cubensis: a novel tool for the malacological survey of fasciolosis transmission. Parasit Vectors 2016; 9:22. [PMID: 26775291 PMCID: PMC4715296 DOI: 10.1186/s13071-016-1303-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 01/12/2016] [Indexed: 11/14/2022] Open
Abstract
Background Fasciolosis is one of the food-borne neglected trematodioses that has reemerged as a human disease while its effects on domestic animal health remains of significant economic consideration. Being snail-borne disease, the accurate and time-saving epidemiological surveillance of the transmission foci where infected lymnaeid snails occur could be essential to effectively focus or redirect control strategies. For this purpose, the first monoclonal antibody-based immunoenzymatic assay to detect Fasciola hepatica-infected snails (FasciMol-ELISA) was recently developed and showed a high sensitivity and specificity when tested in an experimental F. hepatica – Galba cubensis system. Methods Here, we surveyed populations of G. cubensis occurring in western Cuba for the assessment of the FasciMol-ELISA in determining natural F. hepatica infection in this intermediate host. A multiplex PCR, previously developed to detect F. hepatica in G. cubensis, was used for sample classification. Snail dissection method was also employed as screening technique. A Χ2 test and a Kappa index were calculated to evaluate the positivity and the level of agreement between the FasciMol-ELISA and the snail dissection methods with the multiplex PCR, respectively. Results Galba cubensis was found in nine out of 12 sampled localities of which four were positive for F. hepatica infection as detected by both immunoenzymatic and PCR-based assays. The overall prevalence was higher than the natural infection rates previously reported for Cuban G. cubensis (range from 4.1 to 7.42 % depending on the screening method). No significant differences were found between FasciMol-ELISA and multiplex PCR when determining parasite positivity (Χ2 = 6.283; P = 0.0981) whereas an excellent agreement was also noted (Kappa = 0.8224). Conclusions Our results demonstrate the importance of malacological surveys in assessing parasite transmission risk and constitute an alert on the need of accurate measures to control fasciolosis in western Cuba. The sensitivity and specificity of the FasciMol-ELISA as well as its time-saving capacity and the easy of performing the determination of a large number of samples, point at this assay as a novel tool suitable for large-scale monitoring of natural snails populations. To our knowledge, this is the first study that explores natural infection by F. hepatica in field-occurring lymnaeid snails using an immunoenzymatic assay.
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Affiliation(s)
- Annia Alba
- Laboratory of Monoclonal Antibodies and Biological Models, Parasitology Division, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba.
| | - Antonio A Vázquez
- Laboratory of Malacology, Parasitology Division, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba.
| | - Jorge Sánchez
- Laboratory of Malacology, Parasitology Division, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba.
| | - Jorge Fraga
- Laboratory of Molecular Parasitology, Parasitology Division, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba.
| | - Hilda Hernández
- Laboratory of Monoclonal Antibodies and Biological Models, Parasitology Division, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba.
| | - Elizabeth Martínez
- Laboratory of Malacology, Parasitology Division, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba.
| | - Ricardo Marcet
- Laboratory of Monoclonal Antibodies and Biological Models, Parasitology Division, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba.
| | - Mabel Figueredo
- Laboratory of Monoclonal Antibodies and Biological Models, Parasitology Division, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba.
| | - Jorge Sarracent
- Laboratory of Monoclonal Antibodies and Biological Models, Parasitology Division, Institute of Tropical Medicine "Pedro Kourí", Havana, Cuba.
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Genetic and infective diversity of the liver fluke Fasciola hepatica (Trematoda: Digenea) from Cuba. J Helminthol 2016; 90:719-725. [DOI: 10.1017/s0022149x15001029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractIn this study we present the first approach to exploration of the genetic diversity of Cuban Fasciola hepatica populations using microsatellite markers, coupled with observed prevalence in slaughterhouses. Nine populations of flukes recovered from cows and buffalos were studied in the central-western region of Cuba. The observed infection rates of definitive hosts (bovines) were 70–100% in most cases. An important amount of polymorphism was found in the four loci explored. However, no apparent genetic differences were found between populations from different provinces or bovine species. The absence of deviations from Hardy–Weinberg equilibrium suggests a high rate of cross-fertilization between F. hepatica individuals. This result was confirmed when all multilocus genotypes were tested for clonal reproduction and only four individuals differed statistically (Psex< 0.05). High values of expected heterozygosity coupled with highly probable mixing among strains make the metapopulation genetically diversified but similar in terms of certain alleles (low FST values). These results suggest a close relationship between parasite diversity and cattle management in Cuba. Our findings should be taken into consideration by veterinary authorities to help mitigate fasciolosis transmission.
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Vázquez AA, Sánchez J, Alba A, Pointier JP, Hurtrez-Boussès S. Natural prevalence in Cuban populations of the lymnaeid snail Galba cubensis infected with the liver fluke Fasciola hepatica: small values do matter. Parasitol Res 2015; 114:4205-10. [DOI: 10.1007/s00436-015-4653-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 07/23/2015] [Indexed: 11/25/2022]
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Selstad Utaaker K, Robertson LJ. Climate change and foodborne transmission of parasites: A consideration of possible interactions and impacts for selected parasites. Food Res Int 2015. [DOI: 10.1016/j.foodres.2014.06.051] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Alba A, Hernández HM, Marcet R, Gil AL, Vázquez AA, Figueredo M, Sánchez J, Garay HE, Sarracent J. Exploring the antigenic features of Fasciola hepatica rediae (Trematoda: Digenea) through the evaluation of different antigenic candidates for further monoclonal antibody generation. Parasitol Res 2014; 113:3185-93. [PMID: 24924436 DOI: 10.1007/s00436-014-3981-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Accepted: 05/27/2014] [Indexed: 10/25/2022]
Abstract
The control of fasciolosis, as that of other vector-borne diseases, must be related to the control of the lymnaeid snails, the intermediate hosts of the parasite. Thus, an accurate epidemiological surveillance of the transmission foci where the infected mollusks occur is essential. For this purpose, immunoassays could be a useful tool. However, information regarding specific proteins of intramolluscan larvae and previous studies concerning monoclonal antibody generation against asexual stages of trematodes are scarce. Therefore, we explored the antigenic features of intramolluscan rediae of Fasciola hepatica to evaluate three antigenic preparations in order to use the most promising one for developing specific monoclonal antibodies. Mouse antiserum was generated against each antigen for assessing the polyclonal antibody response against the crude extract of rediae and the cross-reactivity against lymnaeids. The specific C-terminal of F. hepatica cytochrome c oxidase subunit I (first antigen), selected by in silico analyses, might not be the appropriate target for immunoassay detection of infected snails, due to its low representation in the total extract of rediae. The majoritarian mixture of low-molecular-weight proteins (<30 kDa) from the rediae homogenate (second antigen) revealed a significant cross-reactivity with lymnaeids. Evidence of the existence of mimetic immunogenic epitopes in this fraction of F. hepatica rediae was achieved. High immunogenicity of the crude extract of rediae (third antigen), mainly related to parasite's specific epitopes, was regarded. Therefore, the rediae homogenate is stated as the most promising antigen from those evaluated, for monoclonal antibody development with potentialities for detecting F. hepatica-infected snails.
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Affiliation(s)
- Annia Alba
- Laboratorio de Anticuerpos Monoclonales, Departamento de Parasitología, Instituto de Medicina Tropical "Pedro Kourí", Ave Novia del Mediodía km 6 ½, AP 601, Havana, Cuba,
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Mas-Coma S, Valero MA, Bargues MD. Fascioliasis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 766:77-114. [PMID: 24903364 DOI: 10.1007/978-1-4939-0915-5_4] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Santiago Mas-Coma
- Departamento de Biología Celular y Parasitología, Facultad de Farmacia, Universidad de Valencia, Av. Vicent Andrés Estellés s/n Burjassot, 46100, Valencia, Spain,
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Fasciola hepaticain Cuba: compatibility of different isolates with two intermediate snail hosts,Galba cubensisandPseudosuccinea columella. J Helminthol 2013; 88:434-40. [PMID: 23721926 DOI: 10.1017/s0022149x13000382] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractIn Cuba, only two lymnaeid snails,Galba cubensisandPseudosuccinea columella, with different ecology and distribution patterns, are intermediate hosts forFasciola hepatica. The compatibility of these two species as hosts was analysed through their rates of infection, the production of rediae and survivorship when exposed toF. hepaticamiracidia. Ten populations ofG. cubensis, eight ofP. columellacollected from various habitats and six isolates ofF. hepaticasampled in slaughterhouses from different localities were tested. Our results clearly demonstrate thatG. cubensisis a more compatible host forF. hepaticain Cuba when compared withP. columella. However, the role thatP. columellamay have in fascioliasis transmission under certain conditions should not be disregarded. Variation in infectivity among isolates ofF. hepaticawere also observed and may explain why some regions in Cuba are more commonly subjected to fascioliasis outbreaks.
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Correa AC, Escobar JS, Noya O, Velásquez LE, González-Ramírez C, Hurtrez-Boussès S, Pointier JP. Morphological and molecular characterization of Neotropic Lymnaeidae (Gastropoda: Lymnaeoidea), vectors of fasciolosis. INFECTION GENETICS AND EVOLUTION 2011; 11:1978-88. [DOI: 10.1016/j.meegid.2011.09.003] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 08/31/2011] [Accepted: 09/03/2011] [Indexed: 11/15/2022]
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Cross-sectional serological survey of human fascioliasis in haiti. J Parasitol Res 2011; 2012:751951. [PMID: 21876782 PMCID: PMC3163126 DOI: 10.1155/2012/751951] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Accepted: 07/04/2011] [Indexed: 11/25/2022] Open
Abstract
Fasciola hepatica, the aetiological agent of fascioliasis in the Caribbean region, occurs throughout the major islands of the Greater Antilles and in localised zones on two islands (Martinique and Saint Lucia) of the Lesser Antilles. However, apart from Puerto Rico, information regarding human fascioliasis in islands of the Caribbean is out of date or unavailable, or even nonexistent as in Haiti. The authors conducted a retrospective, cross-sectional serological survey in Port-au-Prince using a Western blotting test (LDBIO Diagnostics) on human fascioliasis in Haiti. A total of 216 serum samples obtained from apparently healthy adults were tested. The frequency of antibodies in serum samples of the study population was 6.5% (14/216). The immunodominant bands recognised in Western blots were 27-28 kDa (100%), 42 kDa (64%), 60 kDa, and 8-9 kDa (28%). This is the first survey to reveal a relatively low proportion of asymptomatic F. hepatica-infected humans in Haiti.
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Risk factors and geospatial modelling for the presence of Fasciola hepatica infection in sheep and goat farms in the Greek temperate Mediterranean environment. Parasitology 2011; 138:926-38. [DOI: 10.1017/s0031182011000436] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
SUMMARYRisk factors related to herd and farmer status, farm and pasture management, and environmental factors derived by satellite data were examined for their association with the prevalence of F. hepatica in sheep and goat farms in Thessaly, Greece. Twelve farms (16·2%) and 58 farms (78·4%) of 74 had evidence of infection using coproantigen and serology respectively. The average normalized difference vegetation index (NDVI) of farm location for 12 months before sampling was the most significant environmental risk factor for F. hepatica infection based on high seropositivity. The risk of infection increased by 1% when the value of NDVI increased by 0·01 degree. A geospatial map was constructed to show the relative risk (RR) of Fasciola infection in sheep and goat farms in Thessaly. In addition, geospatial maps of the model-based predicted RR for the presence of Fasciola infection in farms in Thessaly and the entire area of Greece were constructed from the developed model based on NDVI. In conclusion, this study demonstrated that Thessaly should be regarded as an endemic region for Fasciola infection and it represents the first prediction model of Fasciola infection in small ruminants in the Mediterranean basin.
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First report of larval stages ofFasciola hepaticain a wild population ofPseudosuccinea columellafrom Cuba and the Caribbean. J Helminthol 2010; 85:109-11. [DOI: 10.1017/s0022149x10000350] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractA wild population of the lymnaeid snailPseudosuccinea columellainfected by larval stages ofFasciola hepaticawas discovered in the Pinar del Río Province, Cuba. One of 100 snails was infected in a rice culture field. This is the first time this species has been found acting as intermediate host ofF. hepaticaunder natural conditions, not only for Cuba but also for the Caribbean area.
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Zhao Q, Vargas M, Dong Y, Zhou L, Wang X, Sriraghavan K, Keiser J, Vennerstrom JL. Structure-activity relationship of an ozonide carboxylic acid (OZ78) against Fasciola hepatica. J Med Chem 2010; 53:4223-33. [PMID: 20423101 DOI: 10.1021/jm100226t] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this paper, we describe the SAR of ozonide carboxylic acid OZ78 (1) as the first part of our search for a trematocidal synthetic peroxide drug development candidate. We found that relatively small structural changes to 1 resulted most commonly in loss of activity against Fasciola hepatica in vivo. A spiroadamantane substructure and acidic functional group (or ester prodrug) were required for activity. Of 26 new compounds administered at single 100 mg/kg oral doses to F. hepatica infected rats, 8 had statistically significant worm burden reductions, 7 were partially curative, and 1 (acylsulfonamide 6) was completely curative and comparable to 1 in flukicidal efficacy. This study also showed that the activity of 1 is peroxide-bond-dependent, suggesting that its flukicidal efficacy depends upon hemoglobin digestion in F. hepatica.
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Affiliation(s)
- Qingjie Zhao
- College of Pharmacy, University of Nebraska Medical Center, Omaha, Nebraska, USA
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