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Schreiber M, Vajs V, Horák P. How tapeworms interact with cancers: a mini-review. PeerJ 2024; 12:e17196. [PMID: 38563013 PMCID: PMC10984186 DOI: 10.7717/peerj.17196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 03/14/2024] [Indexed: 04/04/2024] Open
Abstract
Cancer is one of the leading causes of death, with an estimated 19.3 million new cases and 10 million deaths worldwide in 2020 alone. Approximately 2.2 million cancer cases are attributed to infectious diseases, according to the World Health Organization (WHO). Despite the apparent involvement of some parasitic helminths (especially trematodes) in cancer induction, there are also records of the potential suppressive effects of helminth infections on cancer. Tapeworms such as Echinococcus granulosus, Taenia crassiceps, and more seem to have the potential to suppress malignant cell development, although in a few cases the evidence might be contradictory. Our review aims to summarize known epidemiological data on the cancer-helminth co-occurrence in the human population and the interactions of tapeworms with cancers, i.e., proven or hypothetical effects of tapeworms and their products on cancer cells in vivo (i.e., in experimental animals) or in vitro. The prospect of bioactive tapeworm molecules helping reduce the growth and metastasis of cancer is within the realm of future possibility, although extensive research is yet required due to certain concerns.
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Affiliation(s)
- Manfred Schreiber
- Department of Parasitology, Faculty of Science, Charles University Prague, Prague, Czech Republic
| | - Vojtěch Vajs
- Department of Parasitology, Faculty of Science, Charles University Prague, Prague, Czech Republic
| | - Petr Horák
- Department of Parasitology, Faculty of Science, Charles University Prague, Prague, Czech Republic
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Miranda-Blancas R, Rodríguez-Lima O, García-Gutiérrez P, Flores-López R, Jiménez L, Zubillaga RA, Rudiño-Piñera E, Landa A. Biochemical characterization and gene structure analysis of the 24-kDa glutathione transferase sigma from Taenia solium. FEBS Open Bio 2024. [PMID: 38514457 DOI: 10.1002/2211-5463.13795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/08/2024] [Accepted: 03/11/2024] [Indexed: 03/23/2024] Open
Abstract
Taenia solium can cause human taeniasis and/or cysticercosis. The latter can in some instances cause human neurocysticercosis which is considered a priority in disease-control strategies and the prevention of mental health problems. Glutathione transferases are crucial for the establishment and long-term survival of T. solium; therefore, we structurally analyzed the 24-kDa glutathione transferase gene (Ts24gst) of T. solium and biochemically characterized its product. The gene promoter showed potential binding sites for transcription factors and xenobiotic regulatory elements. The gene consists of a transcription start site, four exons split by three introns, and a polyadenylation site. The gene architecture is conserved in cestodes. Recombinant Ts24GST (rTs24GST) was active and dimeric. Anti-rTs24GST serum showed slight cross-reactivity with human sigma-class GST. A 3D model of Ts24GST enabled identification of putative residues involved in interactions of the G-site with GSH and of the H-site with CDNB and prostaglandin D2. Furthermore, rTs24GST showed optimal activity at 45 °C and pH 9, as well as high structural stability in a wide range of temperatures and pHs. These results contribute to the better understanding of this parasite and the efforts directed to fight taeniasis/cysticercosis.
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Affiliation(s)
- Ricardo Miranda-Blancas
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico
| | - Oscar Rodríguez-Lima
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico
| | | | - Roberto Flores-López
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico
- Posgrado en Ciencias Biológicas Unidad de Posgrado, Universidad Nacional Autónoma de México, Mexico
| | - Lucía Jiménez
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico
| | - Rafael A Zubillaga
- Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City, Mexico
| | - Enrique Rudiño-Piñera
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Abraham Landa
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico
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Schreiber M, Macháček T, Vajs V, Šmídová B, Majer M, Hrdý J, Tolde O, Brábek J, Rösel D, Horák P. Suppression of the growth and metastasis of mouse melanoma by Taenia crassiceps and Mesocestoides corti tapeworms. Front Immunol 2024; 15:1376907. [PMID: 38571957 PMCID: PMC10987685 DOI: 10.3389/fimmu.2024.1376907] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 02/27/2024] [Indexed: 04/05/2024] Open
Abstract
Cancer is still one of the leading causes of death, with an estimated 19.3 million new cases every year. Our paper presents the tumor-suppressing effect of Taenia crassiceps and Mesocestoides corti on B16F10 melanoma, the intraperitoneal application of which followed the experimental infection with these tapeworms, resulting in varying degrees of effectiveness in two strains of mice. In the case of M. corti-infected ICR mice, a strong tumor growth suppression occurred, which was accompanied by a significant reduction in the formation of distant metastases in the liver and lung. Tapeworm-infected C57BL/6J mice also showed a suppression of tumor growth and, in addition, the overall survival of infected C57BL/6J mice was significantly improved. Experiments with potential cross-reaction of melanoma and tapeworm antigens with respective specific antibodies, restimulation of spleen T cells, or the direct effect of tapeworm excretory-secretory products on melanoma cells in vitro could not explain the phenomenon. However, infections with T. crassiceps and M. corti increased the number of leukocytes possibly involved in anti-tumor immunity in the peritoneal cavity of both ICR and C57BL/6J mice. This study unveils the complex interplay between tapeworm infections, immune responses, and melanoma progression, emphasizing the need for further exploration of the mechanisms driving observed tumor-suppressive effects.
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Affiliation(s)
- Manfred Schreiber
- Department of Parasitology, Faculty of Science, Charles University, Prague, Czechia
| | - Tomáš Macháček
- Department of Parasitology, Faculty of Science, Charles University, Prague, Czechia
| | - Vojtěch Vajs
- Department of Parasitology, Faculty of Science, Charles University, Prague, Czechia
| | - Barbora Šmídová
- Department of Parasitology, Faculty of Science, Charles University, Prague, Czechia
| | - Martin Majer
- Department of Parasitology, Faculty of Science, Charles University, Prague, Czechia
| | - Jiří Hrdý
- Institute of Immunology and Microbiology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czechia
| | - Ondřej Tolde
- Department of Cell Biology, and Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Charles University, Prague, Czechia
| | - Jan Brábek
- Department of Cell Biology, and Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Charles University, Prague, Czechia
| | - Daniel Rösel
- Department of Cell Biology, and Biotechnology and Biomedicine Center of the Academy of Sciences and Charles University in Vestec (BIOCEV), Charles University, Prague, Czechia
| | - Petr Horák
- Department of Parasitology, Faculty of Science, Charles University, Prague, Czechia
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Ancarola ME, García LCA, Mourglia-Ettlin G, Cucher MA. Using the model cestode Taenia crassiceps for the study of cysticercosis. Methods Cell Biol 2024; 185:19-33. [PMID: 38556448 DOI: 10.1016/bs.mcb.2024.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
Taenia solium is the aetiological agent of taeniasis/cysticercosis, one of the most severe neglected tropical diseases (NTD) according to the World Health Organization (WHO). The life cycle of T. solium alternates between pigs (intermediate host) and humans (definitive host). In addition, humans can act as accidental intermediate hosts if they ingest infective eggs. In this case, the most severe condition of the disease occurs when parasites invade the central nervous system, causing neurocysticercosis (NCC). The complexity of the life cycle of T. solium imposes a barrier to study this pathogen thoroughly. Thus, related species, such as T. crassiceps are commonly used. Due to its capacity to multiply asexually, T. crassiceps can be maintained by serial passage in laboratory mice in standard biosecurity level facilities. In addition, an in vitro system to generate cysticerci in the presence of feeder cells has been recently developed. Despite model species display biological differences with their zoonotic counterparts, they have historically helped to understand the biology of the related pathogenic species and hence, generate improvements in NTD detection and control. In this chapter, we describe the procedures to carry out both in vivo and in vitro systems for T. crassiceps in the laboratory.
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Affiliation(s)
- María Eugenia Ancarola
- Department of Microbiology, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina; Institute of Research on Microbiology and Medical Parasitology (IMPaM, UBA-CONICET), University of Buenos Aires, Buenos Aires, Argentina
| | - Lucía Celia Abril García
- Department of Microbiology, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina; Institute of Research on Microbiology and Medical Parasitology (IMPaM, UBA-CONICET), University of Buenos Aires, Buenos Aires, Argentina
| | - Gustavo Mourglia-Ettlin
- Área Inmunología, Departamento de Biociencias (DEPBIO), Facultad de Química, Universidad de la República, Montevideo, Uruguay; Unidad Asociada de Inmunología, Instituto de Química Biológica (IQB), Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay; Laboratorio de Inmunología, Instituto de Higiene "Prof. Arnoldo Berta", Universidad de la República, Montevideo, Uruguay
| | - Marcela Alejandra Cucher
- Department of Microbiology, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina; Institute of Research on Microbiology and Medical Parasitology (IMPaM, UBA-CONICET), University of Buenos Aires, Buenos Aires, Argentina.
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Eggink H, Maas M, van den Brand JM, Dekker J, Franssen F, Hoving EW, Kortbeek LM, Kranendonk ME, Meiners LC, Rittscher AE, Roelfsema J, Schölvinck EH. Taenia martis Neurocysticercosis-Like Lesion in Child, Associated with Local Source, the Netherlands. Emerg Infect Dis 2024; 30:555-559. [PMID: 38407150 PMCID: PMC10902551 DOI: 10.3201/eid3003.231402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Abstract
A neurocysticercosis-like lesion in an 11-year-old boy in the Netherlands was determined to be caused by the zoonotic Taenia martis tapeworm. Subsequent testing revealed that 15% of wild martens tested in that region were infected with T. martis tapeworms with 100% genetic similarity; thus, the infection source was most likely local.
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Affiliation(s)
| | | | - Judith M.A. van den Brand
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
| | - Jasja Dekker
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
| | - Frits Franssen
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
| | - Eelco W. Hoving
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
| | - Laetitia M. Kortbeek
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
| | - Mariëtte E.G. Kranendonk
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
| | - Linda C. Meiners
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
| | - Anne E. Rittscher
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
| | - Jeroen Roelfsema
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
| | - Elisabeth H. Schölvinck
- University Medical Center Groningen, Groningen, the Netherlands (H. Eggink, L.C. Meiners, E.H. Schölvinck)
- National Institute for Public Health and the Environment, Bilthoven, the Netherlands (M. Maas, F. Franssen, L.M. Kortbeek, J. Roelfsema)
- Utrecht University, Utrecht, the Netherlands (J.M.A. van den Brand, A.E. Rittscher)
- Jasja Dekker Dierecologie B.V., Arnhem, the Netherlands (J. Dekker)
- Princess Maxima Center, Utrecht (E.W. Hoving, M.E.G. Kranendonk)
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De Bock S, Duchateau L, Levecke B, Gabriël S. Performance evaluation of protocols for Taenia saginata and Ascaris suum egg recovery from the house fly's gastrointestinal tract and exoskeleton. Parasit Vectors 2023; 16:459. [PMID: 38110985 PMCID: PMC10729472 DOI: 10.1186/s13071-023-06077-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 11/30/2023] [Indexed: 12/20/2023] Open
Abstract
BACKGROUND The synanthropic house fly (Musca domestica) can potentially contribute to the mechanical spread of eggs of Taenia and Ascaris spp. in the environment and between hosts. However, the absence of validated protocols to recover eggs hampers an in-depth analysis of the house fly's role in parasite egg transmission. METHODS The gastrointestinal tract and exoskeleton of euthanized house flies were spiked with Taenia saginata eggs. The performance of several recovery protocols, in terms of both the recovery rate and ease-of-use, was (microscopically) evaluated and compared. These protocols employed steps such as washing, maceration, filtration, flotation and both passive and centrifugal sedimentation. The final validated protocols were subsequently evaluated for the recovery of Ascaris suum eggs. RESULTS The final protocol validated for the recovery of T. saginata eggs from the house fly's gastrointestinal tract involved homogenization in phosphate-buffered saline and centrifugation at 2000 g for 2 min, yielding a recovery rate of 79.7%. This protocol required 6.5 min to perform (which included 1.5 min of hands-on time) and removed large debris particles that could hinder the differentiation of eggs from debris. Similarly, the final protocol validated for the recovery of T. saginata eggs from the fly's exoskeleton involved washing by vortexing for 2 min in Tween 80 (0.05%), 15 min of passive sedimentation and centrifugation at 2000 g for 2 min, yielding a recovery rate of 77.4%. This protocol required 20.5 min to perform (which included 3.5 min of hands-on time) and successfully removed debris. The same protocols yielded recovery rates of 74.2% and 91.5% for the recovery of A. suum eggs from the fly's gastrointestinal tract and exoskeleton, respectively. CONCLUSIONS Effective, simple and easy-to-use protocols were developed and validated for the recovery of T. saginata and A. suum eggs from the house fly's gastrointestinal tract and exoskeleton. These protocols can be applied to investigate the importance of flies as parasite egg transmitters in laboratory and field settings.
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Affiliation(s)
- Sophie De Bock
- Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium.
| | - Luc Duchateau
- Biometrics Research Group, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Bruno Levecke
- Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
| | - Sarah Gabriël
- Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium
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Furtado Jost R, Müller N, Marreros N, Moré G, Antoine L, Basso W, Frey CF. What is the role of Swiss domestic cats in environmental contamination with Echinococcus multilocularis eggs? Parasit Vectors 2023; 16:353. [PMID: 37807080 PMCID: PMC10561489 DOI: 10.1186/s13071-023-05983-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 09/25/2023] [Indexed: 10/10/2023] Open
Abstract
BACKGROUND The role of the domestic cat as definitive host for Echinococcus multilocularis and thus in environmental contamination with eggs has not yet been entirely resolved. This study aimed to assess the prevalence of E. multilocularis and other gastrointestinal parasites in Swiss domestic cats and to compare the diagnostic sensitivity of different methods for the detection of intestinal taeniid infection. METHODS Faecal samples from 146 cats were included in the study. Faecal samples only were available from 55 cats; for the other 91 cats, necropsy was performed in addition to faecal sample testing. All (n = 146) faecal samples were analysed by a combined sedimentation/flotation technique (44% ZnCl2) and by the sodium acetate-acetic acid-formalin (SAF) sedimentation technique; when sufficient material was available (n = 121 samples) the Baermann-Wetzel technique was also used. Additionally, all samples were analysed by two coproantigen (copro)-quantitative PCRs (qPCR): (i) a multiplex qPCR able to detect and differentiate between E. multilocularis, Echinococcus granulosus sensu lato and Taenia spp./other cestodes (CEST-qPCR) and (ii) an E. multilocularis-specific qPCR (EM-qPCR). Finally, the intestines were examined macroscopically and microscopically for parasite stages at necropsy (n = 91) and using an intestinal scraping technique (IST) (n = 64). RESULTS Of the 146 cats examined, 24 (17.1%) were infected by intestinal parasites, namely Hydatigera (syn. Taenia) taeniaeformis (8.9%), Toxocara cati (6.1%), Capillaria sp. (3.4%), hookworms (3.4%), Mesocestoides litteratus (1.4%), Giardia sp. (1.4%), Cystoisospora rivolta (1.4%), Cystoisospora felis (0.7%), Toxoplasma gondii (0.7%), Hammondia hammondi (0.7%) and Strongyloides sp. (0.7%). Necropsy and the IST revealed adult H. taeniaeformis in 12 animals, of which eight faecal samples were positive by the CEST-qPCR (sensitivity = 67%) and six samples by the sedimentation/flotation technique (sensitivity = 50%). No E. multilocularis infection was detected in the sampled cats. Using Bayesian latent class analysis, the mean posterior prevalence probability was 0.0% (95% confidence interval 0-0.83%) for E. multilocularis. CONCLUSIONS There was no evidence of E. multilocularis infection among the 146 cats examined, suggesting that the prevalence of this parasite is low (< 1%) in the Swiss domestic cat population. Nonetheless, some of the sampled cats were infected by parasites that have rodents as intermediate hosts, demonstrating successful predation by these cats, and some were infected with zoonotic parasites. Cats therefore should not be disregarded as potential hosts for E. multilocularis and other zoonotic parasites.
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Affiliation(s)
- Rebecca Furtado Jost
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, 3012, Bern, Switzerland
| | - Norbert Müller
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, 3012, Bern, Switzerland
| | - Nelson Marreros
- School of Agricultural, Forest and Food Sciences HAFL, Bern University of Applied Sciences, Länggasse 85, 3052, Zollikofen, Switzerland
| | - Gastón Moré
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, 3012, Bern, Switzerland
| | - Loic Antoine
- Boehringer-Ingelheim Animal Health, 29 Avenue Tony Garnier, 69007, Lyon, France
| | - Walter Basso
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, 3012, Bern, Switzerland
| | - Caroline F Frey
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, 3012, Bern, Switzerland.
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Zhu HX, Li YC, Yang XP, Chu YH, Guo W, Chen RX, Guo DD, Cheng LJ, Li Y. Demographics and Clinical Characteristics of Patients with Neurocysticercosis: A Retrospective Study from Dali, China. Saudi J Med Med Sci 2023; 11:283-291. [PMID: 37970452 PMCID: PMC10634465 DOI: 10.4103/sjmms.sjmms_298_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/19/2023] [Accepted: 08/28/2023] [Indexed: 11/17/2023]
Abstract
Background Neurocysticercosis (NCC), a predominant parasitic disease that affects the central nervous system and presents with diverse clinical manifestations, is a major contributor to acquired epilepsy worldwide, particularly in low-, middle-, and upper middle-income nations, such as China. In China, the Yunnan Province bears a significant burden of this disease. Objective To describe the demographic, clinical, and radiological features as well as serum and cerebrospinal fluid antibodies to cysticercus in patients with NCC from Dali, Yunnan Province, China. Materials and Methods This retrospective study included patients who were diagnosed with NCC at The First Affiliated Hospital of Dali University between January 2018 and May 2023 and were residing in Dali, Yunnan Province, China. Results A total of 552 patients with NCC were included, of which 33.3% belonged to Bai ethnicity. The clinical presentation of NCC exhibited variability that was influenced by factors such as the number, location, and stage of the parasites. Epilepsy/seizure (49.9%) was the most prevalent symptom, with higher occurrence in the degenerative stage of cysts (P < 0.001). Compared with other locations, cysticerci located in the brain parenchyma are more likely to lead to seizures/epilepsy (OR = 17.45, 95% CI: 7.96-38.25) and headaches (OR = 3.02, 95% CI: 1.23-7.41). Seizures/epilepsy are more likely in patients with cysts in the vesicular (OR = 2.71, 95% CI: 1.12-6.61) and degenerative (OR = 102.38, 95% CI: 28.36-369.60) stages than those in the calcified stage. Seizures was not dependent on the number of lesions. All NCC patients underwent anthelminthic therapy, with the majority receiving albendazole (79.7%). Conclusion This study provides valuable clinical insights into NCC patients in Dali and underscores the significance of NCC as a leading preventable cause of epilepsy.
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Affiliation(s)
- Han-Xiao Zhu
- Department of Neurology, The First Affiliated Hospital of Dali University, Dali, Yunnan, China
| | - Yang-Chao Li
- Department of Neurology, The First Affiliated Hospital of Dali University, Dali, Yunnan, China
| | - Xue-Ping Yang
- Clinical Medical College, Dali University, Dali, Yunnan, China
| | - Yu-Hao Chu
- Clinical Medical College, Dali University, Dali, Yunnan, China
| | - Wang Guo
- Clinical Medical College, Dali University, Dali, Yunnan, China
| | - Ruo-Xia Chen
- Clinical Medical College, Dali University, Dali, Yunnan, China
| | - Dan-Dan Guo
- Department of Neurology, The First Affiliated Hospital of Dali University, Dali, Yunnan, China
| | - Li-Jing Cheng
- Department of Neurology, The First Affiliated Hospital of Dali University, Dali, Yunnan, China
| | - Yun Li
- Department of Neurology, The First Affiliated Hospital of Dali University, Dali, Yunnan, China
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Şahin M, Ödemiş N, Yılmaz H, Beyhan YE. Investigation of Parasites in Food Handlers in Turkey. Foodborne Pathog Dis 2023; 20:381-387. [PMID: 37523278 DOI: 10.1089/fpd.2023.0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023] Open
Abstract
Increasing world population parallelly also brings an increase in food production and consumption. As food consumption increases, so do foodborne infections. In cases where adequate food safety and hygiene is not provided in places such as restaurants, dormitories, prisons, hospitals where mass feeding is made outside the home, many parasitic agents can be transmitted to people through food. People working in the food processing and distribution sector and who are in the position of porters play an important role in the spread of parasites, as they can transmit parasitic agents to food through fingernails and hands. Parasites such as Enterobius vermicularis, Entamoeba histolytica, and Giardia intestinalis can be transmitted to food and then to patients through nails and hands. This study was planned to investigate the presence of parasites in hospital food production and distribution workers, such as cooks and waiters, using various methods. Stool and serum samples were taken from 100 food production and distribution workers. Stool samples were examined by native-Lugol, concentration, trichrome, acid-fast staining, and cellophane tape methods. E. histolytica antigen in stool and Toxoplasma and Taenia antibodies in serum were searched by enzyme-linked immunosorbent assay. Parasites were detected in 59% people, and 41 were evaluated as negative. This positivity was 71.9% (23/32) in the 45-61 age range. Blastocystis sp. (27%), Toxoplasma (25%), E. histolytica (10%), Taenia spp. (7%), E. vermicularis (7%), Entamoeba coli (7%), G. intestinalis (5%), Chilomastix mesnili (1%), and I. butschlii (1%) were detected in food handlers. High Toxoplasma antibody positivity (25%) suggests the possibility of transmission to kitchen workers through ways, such as infected raw meat. However, the detection of E. histolytica, Taenia spp., E. vermicularis, G. intestinalis parasites in workers at significant levels poses a significant risk for society consuming these foods. As a result, it is important to investigate the presence of parasites in the employee dealing with food production and distribution to protect patients from parasitic infections especially in hospitals where the people are immunocompromised and more susceptible, and where mass meals are eaten.
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Affiliation(s)
- Maksut Şahin
- Department of Parasitology, Faculty of Medicine, Van Yüzüncü Yıl University, Van, Turkey
| | - Nuriz Ödemiş
- Department of Parasitology, Faculty of Medicine, Van Yüzüncü Yıl University, Van, Turkey
| | - Hasan Yılmaz
- Department of Parasitology, Faculty of Medicine, Van Yüzüncü Yıl University, Van, Turkey
| | - Yunus Emre Beyhan
- Department of Parasitology, Faculty of Medicine, Van Yüzüncü Yıl University, Van, Turkey
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Miljević M, Rajičić M, Umhang G, Bajić B, Bjelić Čabrilo O, Budinski I, Blagojević J. Cryptic species Hydatigera kamiyai and other taeniid metacestodes in the populations of small mammals in Serbia. Parasit Vectors 2023; 16:250. [PMID: 37491284 PMCID: PMC10369706 DOI: 10.1186/s13071-023-05879-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/11/2023] [Indexed: 07/27/2023] Open
Abstract
BACKGROUND Hydatigera (Cestoda: Taeniidae) is a recently resurrected genus with the description of a new species, Hydatigera kamiyai, a cryptic entity within the Hydatigera taeniaeformis species complex. Rodents are intermediate hosts and correct taxonomic identification of H. taeniaeformis sensu lato (s.l.) species is difficult without the use of molecular methods. The aim of this study was to identify and explore the genetic diversity of Hydatigera and other taeniid species. METHODS Ten different small mammals species (856 individuals) (Rattus rattus, three Apodemus, three Arvicolinae and three Soricidae species) were examined from 2013 to 2023. Captured animals were visually examined for cysts and visible lesions. Two markers were used for amplification and sequencing: cox1 and 12S rDNA. RESULTS Molecular analysis of cysts and visible lesions revealed four taeniid species: Hydatigera kamiyai, H. taeniaeformis sensu stricto (s.s.), Taenia martis and T. crassiceps. Hydatigera kamiyai was found in Apodemus flavicollis, A. agrarius, Microtus arvalis and Crocidrua leucodon, while H. taeniaeformis s.s. is registered in R. rattus. Hydatigera kamiyai cox1 sequences clustered with European populations and showed at least 25 nucleotid differences compared to Asian, African, Australian and one of our isolates of H. taeniaeformis s.s acquired from a rat, followed by large sequence distances (9.4% to 12.9%), indicating clear molecular distinction of two species. CONCLUSIONS This is one of the few mitochondrial gene-based studies performed after the description of cryptic entities within the Hydatigera taeniaeformis s.l. complex and represents a valuable contribution to understanding of genetic diversity, host suitability and geographic distribution of these tapeworm species. Also, our study provides an important basis of molecular data from this part of Europe for further studies. We emphasize the importance of additional studies of intermediate hosts, especially rats from Europe and Apodemus spp. and voles from Asia and Africa.
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Affiliation(s)
- Milan Miljević
- Department of Genetic Research, Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000, Belgrade, Serbia.
| | - Marija Rajičić
- Department of Genetic Research, Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000, Belgrade, Serbia
| | - Gérald Umhang
- Nancy Laboratory for Rabies and Wildlife, National Reference Laboratory for Echinococcus Spp, ANSES, Technopôle Agricole Et Vétérinaire, 40009, 54220, Malzéville, CS, France
| | - Branka Bajić
- Department of Genetic Research, Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000, Belgrade, Serbia
| | - Olivera Bjelić Čabrilo
- Faculty of Sciences, Department of Biology and Ecology, University of Novi Sad, Trg Dositeja Obradovića 2, 21000, Novi Sad, Serbia
| | - Ivana Budinski
- Department of Genetic Research, Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000, Belgrade, Serbia
| | - Jelena Blagojević
- Department of Genetic Research, Institute for Biological Research "Siniša Stanković"-National Institute of the Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000, Belgrade, Serbia
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11
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Kim J, Seo M, Fujita H, Chai JY, Park JW, Jang JW, Jang IS, Shin DH. A parasitological study on the possible toilet ruins of the Japanese colonial period in Korea. Parasites Hosts Dis 2023; 61:198-201. [PMID: 37258267 DOI: 10.3347/phd.23013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 04/13/2023] [Indexed: 06/02/2023]
Abstract
In the past decade, experts have conducted parasitological research on archaeological specimens in Korea to collect historical parasite infection data. In these studies, parasitologists successfully described the infection pattern of each parasite species in history. However, in the first half of the 20th century, archaeoparasitological reports have been scant. In 2021, we conducted a parasitological examination of a toilet-like structure that emerged in the early 20th century. This structure was built by stacking 2 wooden barrels; and in the study samples, we found ancient Trichuris trichiura, Ascaris lumbricoides (unfertilized), and Taenia spp. eggs and therefore proposed a higher possibility that the barrels could have been used as a toilet at the time. To understand how the antihelminthic campaign since the 1960s helped reduce parasite infection rates in Korea, more research should focus on early-20th-century toilet ruins.
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Affiliation(s)
- Jieun Kim
- Department of Anatomy, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Min Seo
- Department of Parasitology, Dankook University College of Medicine, Cheonan 31116, Korea
| | - Hisashi Fujita
- Institute for the Study of Ancient Civilizations and Cultural Resourses, Kanazaawa University, Ishikawa 920-1192, Japan
- Paleo Labo, Co. Ltd., Saitama 335-0016, Japan
| | - Jong Yil Chai
- Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Jin Woo Park
- Korea Research Institute of Military Heritage, Seoul, Korea
| | - Jun Won Jang
- Korea Research Institute of Military Heritage, Seoul, Korea
| | - In Soo Jang
- Korea Research Institute of Military Heritage, Seoul, Korea
| | - Dong Hoon Shin
- Department of Anatomy, Seoul National University College of Medicine, Seoul 03080, Korea
- Institute of Forensic Science, Seoul National University College of Medicine, Seoul 03080, Korea
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12
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Thompson RCA. Zoonotic helminths - why the challenge remains. J Helminthol 2023; 97:e21. [PMID: 36790130 DOI: 10.1017/S0022149X23000020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Helminth zoonoses remain a global problem to public health and the economy of many countries. Polymerase chain reaction-based techniques and sequencing have resolved many taxonomic issues and are now essential to understanding the epidemiology of helminth zoonotic infections and the ecology of the causative agents. This is clearly demonstrated from research on Echinococcus (echinococcosis) and Trichinella (trichinosis). Unfortunately, a variety of anthropogenic factors are worsening the problems caused by helminth zoonoses. These include cultural factors, urbanization and climate change. Wildlife plays an increasingly important role in the maintenance of many helminth zoonoses making surveillance and control increasingly difficult. The emergence or re-emergence of helminth zoonoses such as Ancylostoma ceylanicum, Toxocara, Dracunculus and Thelazia exacerbate an already discouraging scenario compounding the control of a group of long neglected diseases.
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Martini M, Dumendiak S, Gagliardo A, Ragazzini F, La Rosa L, Giunchi D, Thielen F, Romig T, Massolo A, Wassermann M. Echinococcus multilocularis and Other Taeniid Metacestodes of Muskrats in Luxembourg: Prevalence, Risk Factors, Parasite Reproduction, and Genetic Diversity. Pathogens 2022; 11. [PMID: 36558748 DOI: 10.3390/pathogens11121414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/19/2022] [Accepted: 11/21/2022] [Indexed: 11/27/2022] Open
Abstract
Muskrats (Ondatra zibethicus) are competent intermediate hosts for Echinococcus multilocularis, are frequently infected with this zoonotic cestode, and have even been proposed as a target species to monitor endemicity levels of this parasite. However, their contribution to maintaining the parasitic lifecycle is still unclear. To obtain data on infection frequency and reproductive potential, 280 muskrats from the Grand Duchy of Luxembourg were examined for cestode larvae in the years 2013−2017. Based on morphological and molecular identification, Echinococcus multilocularis was found at a prevalence of 14.6%. Other metacestodes were Hydatigera kamiyai, with a prevalence of 45.7%, Taenia martis with 8.9%, Taenia polyacantha with 5.0%, and Versteria mustelae, which was found in 0.7% of all muskrats. More than 80% of E. multilocularis-infected muskrats contained fertile metacestodes with a mean number of >300,000 (and up to 1,609,816) protoscoleces, which is by far the highest reproductive potential known from any intermediate host species in Europe. Temporal analysis of E. multilocularis prevalence within the study period (and in comparison with earlier data) strongly indicates a robust increase in the studied area. Host age seemed to be an important risk factor for infection, as well as co-infections with Hydatigera kamiyai. A preference for the right medial lobe of the liver as the location of E. multilocularis metacestode was observed. Intraspecific genetic variation among 89 discrete E. multilocularis metacestodes was non-existent based on 300−1590 bp sections of cox1. This is a stark contrast to H. kamiyai, of which nine haplotypes were found on a short 318 bp section of cox1, resulting in genetic diversity in the small country of Luxembourg at a similar level than previously reported from large stretches of Europe and northern Asia.
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14
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Bansal N, Mohanty S, Kadanthode M, Kumar P. Review of cysticercosis of maxillofacial region and report of two cases. J Stomatol Oral Maxillofac Surg 2022; 123:e760-9. [PMID: 35858657 DOI: 10.1016/j.jormas.2022.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/03/2022] [Accepted: 07/15/2022] [Indexed: 11/23/2022]
Abstract
Cysticercosis is a parasitic infection caused by the larval stage of Taenia solium, which very rarely manifests in the maxillofacial region. It usually presents as a painless swelling. The most common site for maxillofacial cysticercosis are the tongue and lips. When humans accidently ingest the eggs of Taenia solium, they become the intermediate host, a role which is typically played by pig. This paper describes two cases of cysticercosis cellulosae, presenting as non-tender swelling of left buccal mucosa and left temporalis region respectively. Case reports available on PubMed were searched and a review was performed. Excision of cystic lesion was the treatment modality in majority of published reports. It is emphasised that cysticercosis should be considered in differential diagnosis of solitary painless swellings of oral and maxillofacial region, especially in patients from an endemic region.
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García LCA, Pérez MG, Ancarola ME, Rosenzvit MC, Cucher MA. In vitro system for the growth and asexual multiplication of Taenia crassiceps cysticerci. Parasitology 2022; 149:1775-1780. [PMID: 36165285 PMCID: PMC11010574 DOI: 10.1017/s0031182022001354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 09/08/2022] [Accepted: 09/14/2022] [Indexed: 12/14/2022]
Abstract
Taenia solium is the aetiological agent of cysticercosis, a zoonosis that causes severe health and economic losses across Latin America, Africa and Asia. The most serious manifestation of the disease is neurocysticercosis, which occurs when the larval stage (cysticercus) establishes in the central nervous system. Using Taenia crassiceps as an experimental model organism for the study of cysticercosis, we aimed to identify the in vitro conditions necessary to allow parasite development at the short- and long terms. First, cysticerci were incubated for 15 days in different media and parasite densities. The number of buddings and cysticerci diameter were measured to evaluate asexual multiplication and parasite growth, respectively. Vitality was determined by trypan blue staining and morphology analysis. As a result, high cysticerci density and medium containing FBS and the excretion/secretion (E/S) products of feeder cells induced parasite survival, growth and multiplication. Then, the long-term (5 weeks) incubation of the parasites in co-culture with feeder cells was evaluated. Consequently, the mammalian cell lines induced a significant increase in total parasite volume while axenic cultures did not show any statistically significant change over time. In this study, the proper conditions to maintain T. crassiceps in vitro are described for the first time in a simpler and more controlled setting other than experimental infections. In addition, it was shown that cysticerci growth, survival and asexual multiplication depend on a complex network of secreted factors from both parasite and host.
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Affiliation(s)
- Lucía Celia Abril García
- Department of Microbiology, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
- Institute of Research on Microbiology and Medical Parasitology (IMPaM, UBA-CONICET), University of Buenos Aires, Buenos Aires, Argentina
| | - Matías Gastón Pérez
- Department of Microbiology, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
- Institute of Research on Microbiology and Medical Parasitology (IMPaM, UBA-CONICET), University of Buenos Aires, Buenos Aires, Argentina
| | - María Eugenia Ancarola
- Department of Microbiology, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
- Institute of Research on Microbiology and Medical Parasitology (IMPaM, UBA-CONICET), University of Buenos Aires, Buenos Aires, Argentina
| | - Mara Cecilia Rosenzvit
- Department of Microbiology, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
- Institute of Research on Microbiology and Medical Parasitology (IMPaM, UBA-CONICET), University of Buenos Aires, Buenos Aires, Argentina
| | - Marcela Alejandra Cucher
- Department of Microbiology, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
- Institute of Research on Microbiology and Medical Parasitology (IMPaM, UBA-CONICET), University of Buenos Aires, Buenos Aires, Argentina
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Young BC, Bush SJ, Lipworth S, George S, Dingle KE, Sanderson N, Brankin A, Walker T, Sharma S, Leong J, Plaha P, Hofer M, Chiodini P, Gottstein B, Furrer L, Crook D, Brent A. Modern Solutions for Ancient Pathogens: Direct Pathogen Sequencing for Diagnosis of Lepromatous Leprosy and Cerebral Coenurosis. Open Forum Infect Dis 2022; 9:ofac428. [PMID: 36119959 PMCID: PMC9472670 DOI: 10.1093/ofid/ofac428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 08/21/2022] [Indexed: 11/26/2022] Open
Abstract
Microbes unculturable in vitro remain diagnostically challenging, dependent historically on clinical findings, histology, or targeted molecular detection. We applied whole-genome sequencing directly from tissue to diagnose infections with mycobacteria (leprosy) and parasites (coenurosis). Direct pathogen DNA sequencing provides flexible solutions to diagnosis of difficult pathogens in diverse contexts.
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Affiliation(s)
- Bernadette C Young
- Correspondence: Bernadette Young, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK ()
| | - Stephen J Bush
- Experimental Medicine Division, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Sam Lipworth
- Experimental Medicine Division, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Sophie George
- Experimental Medicine Division, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Kate E Dingle
- Experimental Medicine Division, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Nick Sanderson
- Experimental Medicine Division, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Alice Brankin
- Experimental Medicine Division, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Timothy Walker
- Oxford University Clinical Research Unit, Ho Chi Minh City, Vietnam
| | - Srilakshmi Sharma
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
| | - James Leong
- Oxford Eye Hospital, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
| | - Puneet Plaha
- Nuffield Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Monika Hofer
- Department of Neuropathology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
| | - Peter Chiodini
- Hospital of Tropical Diseases and the London School of Hygiene and Tropical Medicine London, London, United Kingdom
| | - B Gottstein
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Lavinia Furrer
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - Derrick Crook
- Experimental Medicine Division, Nuffield Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
- Microbiology and Infectious Diseases Department, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
- National Institute for Health Research Oxford Biomedical Research Centre, Oxford, United Kingdom
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Rios-Valencia DG, Mompala-García Y, Marquez-Navarro A, Tirado-Mendoza R, Ambrosio J. Annexin in Taenia crassiceps ORF Strain is Localized in the Osmoregulatory System. Acta Parasitol 2022; 67:827-34. [PMID: 35113341 DOI: 10.1007/s11686-022-00526-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/18/2022] [Indexed: 11/01/2022]
Abstract
PURPOSE Annexins are proteins with important roles in parasites, some of which are related to excretion-secretion processes, protein traffic, and microvesicle functionality. The participation of annexins in osmoregulation has been reported in tapeworms, including Taenia solium. This study aimed to investigate the localization and expression of annexin in cysticerci of Taenia crassiceps, used as a model of cysticercosis. METHODS We used an antibody made with a protein, previously employed on Schistosoma bovis, to detect annexin in T. crassiceps proteins extracts used Western blot assay. The histological distribution of annexin was studied with immunofluorescence and confocal microscopy. RESULTS The antibody against annexin recognized a band at a molecular weight of 40.9 kDa. The histological distribution of annexin showed that the protein is mainly localized in the tegument and the protonephridia ducts. CONCLUSION In our study, annexin was detected at a molecular weight similar to that described for Schistosoma bovis. In addition, its principal localization entailed structures of the osmoregulatory system one of the most important by the survival of the parasites. This confirms and solidifies previous reports concerning the role of annexins in T. crassiceps and this will be interesting by the development of new compounds against this protein.
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Jerez Puebla LE, Núñez Fernández FA, Fraga Nodarse J, Cordovi Prado R, Atencio Millán I, Cruz Rodríguez I, Fimia Duarte R, Sánchez Romero MDC, Ortega Medina SDLC, Del Risco U, Pérez Santos L, Robertson LJ. A retrospective study of Taenia spp. in Cuban patients: what does molecular analysis tell us? Food Waterborne Parasitol 2021; 25:e00136. [PMID: 34765755 PMCID: PMC8569478 DOI: 10.1016/j.fawpar.2021.e00136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/05/2021] [Accepted: 10/11/2021] [Indexed: 11/28/2022] Open
Abstract
Taeniosis is a neglected disease, particularly in developing countries, and is caused by infection with the adult tapeworm of either Taenia solium, Taenia saginata, and Taenia asiatica. Of these, T. solium is of primary concern due to the potential for cysticercosis should T. solium eggs be ingested. In Cuba, all cases of taeniosis are assumed to be caused by T. saginata, although some cases of cysticercosis have been documented. It is therefore important to gain further insights regarding the species causing taeniosis in Cuba, especially as diagnostic records indicate an increasing incidence, with the highest number of cases reported in 2020. In this study, we analysed 37 Taenia-positive faecal samples (or proglottids isolated from faecal samples) from the period 2001 until 2020 from all regions of the country. Genomic DNA was extracted from the samples, which had been stored in 10% formalin, using the QIAamp Tissue Kit. Species identification was carried out by duplex real-time PCR targeting the mitochondrial DNA. All cases were found to be T. saginata, and sequence analysis of three isolates confirmed the identification of this species. Our data do not provide any evidence that T. solium currently occurs in Cuba. However, given the relatively low number of samples analysed here, that the parasite may be imported with visitors or travellers who have been in endemic countries, and that taeniosis has relatively mild symptoms and thus infected patients may not seek medical attention, we recommend species determination for all taeniosis cases reported in Cuba. The incidence of taeniosis cases in Cuba is rising, with 2020 being a peak year Although assumed to be Taenia saginata, this has not been confirmed We investigated 37 samples from 2001 until 2020 that had been stored in formalin Duplex real-time PCR indicated T. saginata; 3 cases were confirmed by sequencing
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Affiliation(s)
- Luis Enrique Jerez Puebla
- Departamento de Parasitología, Instituto "Pedro Kourí", Autopista Novia del Mediodía Km 6½ e/Autopista Nacional y Carretera Central, La Habana, Cuba
| | - Fidel A Núñez Fernández
- Departamento de Parasitología, Instituto "Pedro Kourí", Autopista Novia del Mediodía Km 6½ e/Autopista Nacional y Carretera Central, La Habana, Cuba.,Latin-American School of Medical Science, La Habana, Cuba
| | - Jorge Fraga Nodarse
- Departamento de Parasitología, Instituto "Pedro Kourí", Autopista Novia del Mediodía Km 6½ e/Autopista Nacional y Carretera Central, La Habana, Cuba
| | - Raul Cordovi Prado
- Departamento de Parasitología, Instituto "Pedro Kourí", Autopista Novia del Mediodía Km 6½ e/Autopista Nacional y Carretera Central, La Habana, Cuba
| | - Iraís Atencio Millán
- Departamento de Parasitología, Instituto "Pedro Kourí", Autopista Novia del Mediodía Km 6½ e/Autopista Nacional y Carretera Central, La Habana, Cuba
| | - Iredys Cruz Rodríguez
- Departamento de Parasitología, Instituto "Pedro Kourí", Autopista Novia del Mediodía Km 6½ e/Autopista Nacional y Carretera Central, La Habana, Cuba
| | - Rigoberto Fimia Duarte
- Faculty of Health Technology and Nursing, University of Medical Sciences of Villa Clara, Cuba
| | | | | | - Ubaldo Del Risco
- Hygiene Provincial Centre of Microbiology and Epidemiology, Camagüey Province, Cuba
| | - Lissette Pérez Santos
- Department of Virology, Tropical Medicine Institute "Pedro Kourí", Autopista Novia del Mediodía Km 6½ e/Autopista Nacional y Carretera Central, La Habana, Cuba
| | - Lucy J Robertson
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Ås, Norway
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19
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Lightowlers MW, Gasser RB, Hemphill A, Romig T, Tamarozzi F, Deplazes P, Torgerson PR, Garcia HH, Kern P. Advances in the treatment, diagnosis, control and scientific understanding of taeniid cestode parasite infections over the past 50 years. Int J Parasitol 2021; 51:1167-1192. [PMID: 34757089 DOI: 10.1016/j.ijpara.2021.10.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 02/07/2023]
Abstract
In the past 50 years, enormous progress has been made in the diagnosis, treatment and control of taeniid cestode infections/diseases and in the scientific understanding thereof. Most interest in this group of parasites stems from the serious diseases that they cause in humans. It is through this lens that we summarize here the most important breakthroughs that have made a difference to the treatment of human diseases caused by these parasites, reduction in transmission of the taeniid species associated with human disease, or understanding of the parasites' biology likely to impact diagnosis or treatment in the foreseeable future. Key topics discussed are the introduction of anti-cestode drugs, including benzimidazoles and praziquantel, and the development of new imaging modalities that have transformed the diagnosis and post-treatment monitoring of human echinococcoses and neurocysticercosis. The availability of new anti-cestode drugs for use in dogs and a detailed understanding of the transmission dynamics of Echinococcus granulosus sensu lato have underpinned successful programs that have eliminated cystic echinococcosis in some areas of the world and greatly reduced the incidence of infection in others. Despite these successes, cystic and alveolar echinococcosis and neurocysticercosis continue to be prevalent in many parts of the world, requiring new or renewed efforts to prevent the associated taeniid infections. Major advances made in the development of practical vaccines against E. granulosus and Taenia solium will hopefully assist in this endeavour, as might the understanding of the parasites' biology that have come from an elucidation of the nuclear genomes of each of the most important taeniid species causing human diseases.
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Affiliation(s)
- Marshall W Lightowlers
- Department of Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, 250 Princes Highway, Werribee, Victoria 3030, Australia.
| | - Robin B Gasser
- Department of Biosciences, Melbourne Veterinary School, Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Andrew Hemphill
- Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, Länggassstrasse 122, 3012 Bern, Switzerland
| | - Thomas Romig
- University of Hohenheim, Parasitology Unit, Emil-Wolff-Strasse 34, 70599 Stuttgart, Germany
| | - Francesca Tamarozzi
- Department of Infectious Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, 37024 Negrar di Valpolicella, Verona, Italy
| | - Peter Deplazes
- Institute of Parasitology, Vetsuisse, and Medical Faculty, University of Zürich, Zürich, Switzerland
| | - Paul R Torgerson
- Section of Epidemiology, Vetsuisse Faculty, University of Zürich, Zürich, Switzerland
| | - Hector H Garcia
- Infectious Diseases Laboratory Research-LID, Faculty of Science and Philosophy, Alberto Cazorla Talleri, Universidad Peruana Cayetano Heredia, Lima, Perú; Cysticercosis Unit, Instituto Nacional de Ciencias Neurológicas, Lima, Perú
| | - Peter Kern
- Ulm University Hospital, Division of Infectious Diseases, Albert-Einstein-Allee 23, 89081 Ulm, Germany
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20
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Becerra-Díaz M, Ledesma-Soto Y, Olguín JE, Sánchez-Barrera A, Mendoza-Rodríguez MG, Reyes S, Satoskar AR, Terrazas LI. STAT1-Dependent Recruitment of Ly6C hiCCR2 + Inflammatory Monocytes and M2 Macrophages in a Helminth Infection. Pathogens 2021; 10:1287. [PMID: 34684235 DOI: 10.3390/pathogens10101287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/28/2021] [Accepted: 10/01/2021] [Indexed: 12/11/2022] Open
Abstract
Signal Transducer and Activator of Transcription (STAT) 1 signaling is critical for IFN-γ-mediated immune responses and resistance to protozoan and viral infections. However, its role in immunoregulation during helminth parasitic infections is not fully understood. Here, we used STAT1-/- mice to investigate the role of this transcription factor during a helminth infection caused by the cestode Taenia crassiceps and show that STAT1 is a central molecule favoring susceptibility to this infection. STAT1-/- mice displayed lower parasite burdens at 8 weeks post-infection compared to STAT1+/+ mice. STAT1 mediated the recruitment of inflammatory monocytes and the development of alternatively activated macrophages (M2) at the site of infection. The absence of STAT1 prevented the recruitment of CD11b+Ly6ChiLy6G- monocytic cells and therefore their suppressive activity. This failure was associated with the defective expression of CCR2 on CD11b+Ly6ChiLy6G- cells. Importantly, CD11b+Ly6ChiLy6G- cells highly expressed PDL-1 and suppressed T-cell proliferation elicited by anti-CD3 stimulation. PDL-1+ cells were mostly absent in STAT1-/- mice. Furthermore, only STAT1+/+ mice developed M2 macrophages at 8 weeks post-infection, although macrophages from both T. crassiceps-infected STAT1+/+ and STAT1-/- mice responded to IL-4 in vitro, and both groups of mice were able to produce the Th2 cytokine IL-13. This suggests that CD11b+CCR2+Ly6ChiLy6G- cells give rise to M2 macrophages in this infection. In summary, a lack of STAT1 resulted in impaired recruitment of CD11b+CCR2+Ly6ChiLy6G- cells, failure to develop M2 macrophages, and increased resistance against T. crassiceps infection.
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21
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Raja SM. Unusual oral expulsion of adult Taenia worm through vomiting. Clin Case Rep 2021; 9:e04997. [PMID: 34745618 PMCID: PMC8552224 DOI: 10.1002/ccr3.4997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 09/13/2021] [Accepted: 10/12/2021] [Indexed: 11/06/2022] Open
Abstract
A 49-year-old woman with a history of abdominal discomfort and raw beef intake vomited a long adult Taenia after an episode of acute febrile illness. This case report describes that Taeniasis can rarely present with oral expulsion of the tapeworm. Acute physiologic stress due to illness or surgery could be implicated.
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Affiliation(s)
- Saud Mohammed Raja
- Department of Internal MedicineOrotta National Referral Hospital/Orotta School of Medicine and DentistryAsmaraEritrea
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22
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Ji N, Chen X, Liu G, Zhao S, Tan W, Liu G, Zhang J, Wang Y. Theileria, Hepatozoon and Taenia infection in great gerbils ( Rhombomys opimus) in northwestern China. Int J Parasitol Parasites Wildl 2021; 15:79-86. [PMID: 33996439 PMCID: PMC8099453 DOI: 10.1016/j.ijppaw.2021.04.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 04/05/2021] [Accepted: 04/05/2021] [Indexed: 11/25/2022]
Abstract
The great gerbil (Rhombomys opimus), widely distributed in Asia, is a natural reservoir for Yersinia pestis, Leishmania donovani and some species of helminths. In this study, 188 great gerbils were sampled in Alataw City and Manas County, northwestern China, and tested for the presence of Theileria, Hepatozoon and Taenia species by molecular methods. Theileria sp., named as "Candidatus Theileria xinjiangensis", was detected in heart, liver, spleen, lung, and kidney of 6.9% rodents. Six genotypes of "Taenia sp. Rhombomys opimus", which were close to Taenia laticollis (87.3-94.0% identities), were detected in cyst liquid of 5.3% rodents. "Hepatozoon ayorgbor-like" haemogregarines was detected in spleens of 1.6% rodents. To our best knowledge, Candidatus Theileria xinjiangensis, Hepatozoon ayorgbor-like and genotypes of "Taenia sp. Rhombomys opimus" were found for the first time in the great gerbil. These results extend our knowledge on the diversity and pathogenesis of Theileria, Hepatozoon and Taenia species.
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Affiliation(s)
- Na Ji
- Department of Basic Medicine, School of Medicine, Shihezi University, Shihezi City, Xinjiang Uygur Autonomous Region 832002, People's Republic of China
| | - Xueling Chen
- Department of Basic Medicine, School of Medicine, Shihezi University, Shihezi City, Xinjiang Uygur Autonomous Region 832002, People's Republic of China
| | - Gang Liu
- Department of Basic Medicine, School of Medicine, Shihezi University, Shihezi City, Xinjiang Uygur Autonomous Region 832002, People's Republic of China
| | - Shanshan Zhao
- Department of Basic Medicine, School of Medicine, Shihezi University, Shihezi City, Xinjiang Uygur Autonomous Region 832002, People's Republic of China
| | - Wenbo Tan
- Department of Basic Medicine, School of Medicine, Shihezi University, Shihezi City, Xinjiang Uygur Autonomous Region 832002, People's Republic of China
| | - Guangyuan Liu
- Lanzhou Veterinary Research Institute, Lanzhou, China
| | - Jiangguo Zhang
- Alataw Customs, Alashankou, Xinjiang Uygur Autonomous Region 833418, China
| | - Yuanzhi Wang
- Department of Basic Medicine, School of Medicine, Shihezi University, Shihezi City, Xinjiang Uygur Autonomous Region 832002, People's Republic of China
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Mante PK, Adomako NO, Antwi P, Kusi-Boadum NK. Chronic administration of cryptolepine nanoparticle formulation alleviates seizures in a neurocysticercosis model. Curr Res Pharmacol Drug Discov 2021; 2:100040. [PMID: 34909669 PMCID: PMC8663984 DOI: 10.1016/j.crphar.2021.100040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/30/2021] [Accepted: 06/03/2021] [Indexed: 12/02/2022] Open
Abstract
Worldwide, neurocysticercosis remains an important cause of acquired epilepsy. We therefore seek to investigate the effectiveness of the nanoparticle formulation of cryptolepine in alleviating seizures in a neurocysticercosis model. A solid-lipid nanoparticle formulation of extracted cryptolepine was prepared. The parasites were maintained in T. crassiceps metacestode (ORF strain) - infected female BALB/c mice. Cryp (5 mg/kg), SLN-CRYP (5 mg/kg), ABZ (50 mg/kg) DXM (0.5 mg/kg), and PHE (30 mg/kg). were assessed for in vitro cysticidal, in vivo cysticidal and/or antiseizure activity in 70 mice that had developed seizures from infection with T. crassiceps. General pathologic processes were studied in the host tissue and inflammatory mediators were quantified from isolated mice brains. All treatments (CRYP, SLN-CRYP and ABZ) caused significantly reduced viability of T. crassiceps cysts. Treatment with SLN-CRYP significantly shrunk cysticerci and resolved ventricular expansion and deviation similar to albendazole on examination of encephala. SLN-CRYP inhibited hyperemia but was more effective against microgliosis, calcification, edema and meningitis. Mean seizure score was significantly reduced in models administered with SLN-CRYP (p < 0.0001); as were frequency (p < 0.0001) and duration (p < 0.0001) of seizures. SLN-CRYP significantly reduced brain homogenate levels of IL-10 (p = 0.0016) and IFN-γ (p < 0.0001). Our study shows that the chronic administration of the nanoparticle formulation of cryptolepine is effective in alleviating seizures associated with neurocysticercosis in a mouse model.
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Affiliation(s)
- Priscilla Kolibea Mante
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Nana Ofori Adomako
- Department of Pharmacy Practice, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Paulina Antwi
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Nana Kofi Kusi-Boadum
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
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24
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Ledger ML, Micarelli I, Ward D, Prowse TL, Carroll M, Killgrove K, Rice C, Franconi T, Tafuri MA, Manzi G, Mitchell PD. Gastrointestinal infection in Italy during the Roman Imperial and Longobard periods: A paleoparasitological analysis of sediment from skeletal remains and sewer drains. Int J Paleopathol 2021; 33:61-71. [PMID: 33744834 DOI: 10.1016/j.ijpp.2021.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 02/16/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
OBJECTIVE This study aims to investigate parasitic infection in Italy during the Roman period (27 BCE-476 CE) and subsequent Longobard (Lombard) period (6th-8th CE). MATERIALS Sediment samples from drains and burials from Roman Imperial-period sites in Italy (Lucus Feroniae, Oplontis, Vacone, and Vagnari), Late Antique and Longobard-period burials at Selvicciola (ca. 4th-8th CE), and Longobard-period burials at Vacone and Povegliano Veronese. METHODS Microscopy was used to identify helminth eggs and enzyme-linked immunosorbent assay (ELISA) to detect protozoan antigens. RESULTS Roundworm and whipworm were found in pelvic sediment from Roman-period burials, while roundworm and the protozoan Giardia duodenalis were identified in Roman-period drains. In pelvic sediment from the Late Antique through Longobard periods, roundworm and Taenia tapeworm eggs were identified. CONCLUSIONS Fecal-oral parasites were found throughout Imperial Roman Italy, suggesting that gastrointestinal infections caused a significant disease burden. In the Longobard period we see continuity in transmission of fecal-oral parasites, and the appearance of zoonotic parasites acquired from eating undercooked meat. SIGNIFICANCE A wealth of information exists about certain diseases in the Roman period, but relatively little is known about intestinal parasites in Italy during the Roman and Longobard periods. This is the first evidence for Giardia in Roman period Italy, and for any parasites in the Longobard period in Italy. LIMITATIONS Low egg concentrations and lack of controls for some samples makes it difficult to differentiate true infections from environmental contamination in some cases. SUGGESTIONS FOR FUTURE RESEARCH Continual study of samples from Roman and Longobard period Italy.
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Affiliation(s)
- Marissa L Ledger
- Department of Archaeology, University of Cambridge, The Henry Wellcome Building, Fitzwilliam Street, Cambridge, CB2 1QH, UK.
| | - Ileana Micarelli
- Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Roma, Italy
| | - Devin Ward
- Department of Anthropology, University of Toronto, ON, Canada
| | - Tracy L Prowse
- Department of Anthropology, McMaster University, Hamilton, ON, Canada
| | | | - Kristina Killgrove
- Department of Anthropology, University of North Carolina at Chapel Hill, USA
| | - Candace Rice
- Joukowsky Institute for Archaeology and the Ancient World, Brown University, USA
| | - Tyler Franconi
- Joukowsky Institute for Archaeology and the Ancient World, Brown University, USA
| | - Mary Anne Tafuri
- Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Roma, Italy
| | - Giorgio Manzi
- Department of Environmental Biology, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Roma, Italy
| | - Piers D Mitchell
- Department of Archaeology, University of Cambridge, The Henry Wellcome Building, Fitzwilliam Street, Cambridge, CB2 1QH, UK
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Abstract
Meat-borne parasitic zoonoses are generally not well-monitored, and so understanding extent and overall prevalence is problematic. Without sufficient attention, their prevalence can become unexpectedly and unacceptably high. This review sheds light on meat-borne parasites in the Arab world, which includes all the Arab countries situated in the continents of Asia and Africa, with more than 400 million inhabitants distributed in 22 countries. Meat-borne parasites can be divided into two main categories-helminths and protozoa. The main helminths included in this review are Taenia saginata, Taenia solium, Taenia asiatica, Echinococcus spp., Fasciola spp., and Trichinella spiralis, while the meat-borne protozoan parasites are Toxoplasma gondii, Cryptosporidium spp., and Sarcocystis spp. In addition, Linguatula serrata, which belongs to the class Pentastomida, was included. Among those, the genus Taenia is the most frequently reported in the Arab world, particularly T. saginata. Many parasitic infections that are mainly transmitted through pork, although widespread in many parts of the world, are rare in the Arab countries, primarily due to religious proscriptions. The majority of the publications concerning meat-borne parasites were from Egypt, which contains the largest population in the Arab world and the highest population density, in addition to various economic, social, and environmental reasons.
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Affiliation(s)
- Sameh Abuseir
- Department of Veterinary Medicine, Faculty of Agriculture and Veterinary Medicine, An-Najah National University, P. O. Box 7, Nablus, West Bank, Palestine.
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26
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Kolapo TU, Bouchard É, Wu J, Bassil M, Revell S, Wagner B, Acker JP, Jenkins EJ. Copro-polymerase chain reaction has higher sensitivity compared to centrifugal fecal flotation in the diagnosis of taeniid cestodes, especially Echinococcus spp, in canids. Vet Parasitol 2021; 292:109400. [PMID: 33713884 DOI: 10.1016/j.vetpar.2021.109400] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 02/24/2021] [Accepted: 03/01/2021] [Indexed: 11/26/2022]
Abstract
Prompt and reliable diagnostic tests for taeniid infection in canids are important due to the risk of zoonoses like Echinococcus spp. Current diagnostic methods relying on fecal flotation lack sensitivity and specificity, but this has rarely been quantified due to the challenges in performing adult cestode recovery (the gold standard) in domestic dogs (Canis familiaris). Therefore, we recovered adult Taenia and Echinococcus spp. from intestines, as well as fecal/intestinal material from 484 wild canids trapped for fur in two Canadian provinces (276 foxes - primarily Vulpes vulpes, coyotes - Canis latrans, and wolves - Canis lupus in Québec and 208 coyotes in Saskatchewan). The performances of a newly developed coproPCR for tapeworm DNA detection in dogs, and centrifugal fecal flotation using Sheather's solution, were evaluated against adult cestode recovery. Overall, adult taeniid cestode prevalence (Taenia and/or Echinococcus) was 28 % (95 % CI: 23-33 %) in Québec (62 % (CI: 51-73%) of 74 coyotes, 65 % (CI: 44-82) of 23 wolves, and 11 % (CI: 7-16%) of 179 foxes) and 79 % (CI: 73-84%) of 208 coyotes in Saskatchewan. In Québec, E. canadensis and Taenia spp. were detected in coyotes and wolves, and foxes were only infected with Taenia spp., whereas Saskatchewan coyotes were predominantly infected with E. multilocularis (at significantly higher prevalence, but not intensity, than coyotes in Québec). Compared with centrifugal fecal flotation, the new coproPCR had at least double the sensitivity (58 % vs 23 % in QC coyotes, 57 % vs 23 % in QC wolves, 24 % vs 0% in QC foxes, and 80 % vs 25 % in SK coyotes). Notably, no taeniid eggs were detected on flotations from foxes infected with Taenia spp., and the new coproPCR had highest sensitivity in Saskatchewan coyotes, which were predominantly infected with E. multilocularis. CoproPCR has promising prospects for use in Veterinary clinics and diagnostic laboratories to detect taeniid cestode infections because of its higher sensitivity than faecal flotation methods. This is particularly important for zoonotic Echinococcus spp. where, from a public health perspective, false negatives are a much greater concern than false positives.
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Affiliation(s)
- Temitope U Kolapo
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada.
| | - Émilie Bouchard
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada
| | - Joy Wu
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada
| | - Mila Bassil
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada
| | - Sarah Revell
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada
| | - Brent Wagner
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada
| | - Jason P Acker
- Aquila Diagnostics Inc., Edmonton, Alberta, Canada; Department of Laboratory Medicine and Pathology, University of Alberta, Canada
| | - Emily J Jenkins
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Canada
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Jansen F, Dorny P, Gabriël S, Dermauw V, Johansen MV, Trevisan C. The survival and dispersal of Taenia eggs in the environment: what are the implications for transmission? A systematic review. Parasit Vectors 2021; 14:88. [PMID: 33514421 PMCID: PMC7845101 DOI: 10.1186/s13071-021-04589-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 01/08/2021] [Indexed: 11/10/2022] Open
Abstract
Taenia spp. are responsible for a substantial health and economic burden in affected populations. Knowledge of the fate of the eggs of Taenia spp. in the environment and of other factors facilitating the transmission of eggs to intermediate hosts is important for the control/elimination of infections caused by Taenia spp. The aim of this systematic review was to summarize current knowledge of the factors influencing the survival and dispersal of Taenia spp. eggs in the environment. Publications retrieved from international databases were systematically reviewed. Of the 1465 papers initially identified, data were ultimately extracted from 93 papers. The results of this systematic review indicate that survival is favoured at moderate temperatures (0–20 °C). Humidity seems to affect the survival of Taenia spp. eggs more than temperature. Under field circumstances, Taenia spp. eggs have been found to survive for up to 1 year. Taenia spp. eggs are commonly found on vegetables (0.9–30%) and in soil and water samples (0–43%), with their presence posing a risk to the consumer. Invertebrates may act as transport hosts, transferring the infection to an intermediate host, but the importance of this route of transmission is still open to question. Wastewater treatment systems are not capable of entirely eliminating Taenia spp. eggs. Access to surface water and the use of sewage sludge as fertilizer on pastures are important risk factors for bovine cysticercosis. Although information on the survival and spread of Taenia spp. eggs is available, in general the data retrieved and reviewed in this article were old, focused on very specific geographical regions and may not be relevant for other areas or not specific for different Taenia spp. Furthermore, it is unknown whether egg survival differs according to Taenia sp. Future studies are necessary to identify sustainable methods to identify and inactivate parasite eggs in the environment and reduce their spread. ![]()
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Affiliation(s)
- Famke Jansen
- Department of Biomedical Sciences, Institute of Tropical Medicine, 155 Nationalestraat, 2000, Antwerp, Belgium.
| | - Pierre Dorny
- Department of Biomedical Sciences, Institute of Tropical Medicine, 155 Nationalestraat, 2000, Antwerp, Belgium
| | - Sarah Gabriël
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, 133 Salisburylaan, 9820, Merelbeke, Belgium
| | - Veronique Dermauw
- Department of Biomedical Sciences, Institute of Tropical Medicine, 155 Nationalestraat, 2000, Antwerp, Belgium
| | - Maria Vang Johansen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 100 Dyrlægevej, 1870, Frederiksberg, Denmark
| | - Chiara Trevisan
- Department of Biomedical Sciences, Institute of Tropical Medicine, 155 Nationalestraat, 2000, Antwerp, Belgium
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28
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Liu ZL, Wang S, Cai XP, Zeng QY. Transcriptome profiling of Cysticercus Pisiformis provides insight into responses to host bile acids. Parasitol Int 2020; 81:102246. [PMID: 33276143 DOI: 10.1016/j.parint.2020.102246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 10/25/2020] [Accepted: 11/10/2020] [Indexed: 11/18/2022]
Abstract
Bile acids in host intestine activate larvae of tapeworms and facilitate its invasion. However, the mechanism underlying this process is poorly understood. In order to better understand responses of tapeworms to host biles, we used RNA-Seq profiling method to study the transcriptomes of Cysticercus Pisiformis (larvae of Taenia Pisiformis) after host bile acid treatment. A total of 338.32 million high-quality clean reads were obtained by Illumina Hiseq platform. Totally, 62,009 unigenes were assembled, 38,382 of which were successfully annotated to known databases. A total of 9324 unigenes were identified as differentially expressed genes (DEGs), of which 5380 and 3944 genes were up- and down-regulated in the group treated with bile acids, respectively. Gene Ontology analysis revealed that biosynthesis and energy metabolism potential were significantly strengthened after host bile treatment in C. pisiformis. Similarly, KEGG pathway analysis revealed an enrichment of pathways related to lipid metabolism and carbohydrate metabolism. Among them, 'AMPK signaling pathway' which is critical in balancing cellular energy, was significantly enriched after bile acids activation. In addition, pathways of 'Fatty acid biosynthesis', 'Fatty acid elongation', 'Starch and sucrose metabolism', and 'glycolysis gluconeogenesis' were also significantly changed after bile acid treatment. qRT-PCR analysis confirmed the differential abundances of some key genes in these pathways. Our data suggest that host bile acids remarkably promote the pathways of energy metabolism of this parasite and regulate the genes involved in balancing lipid metabolism and carbohydrate metabolism. These findings provide new insights on the lifecycle of Taenia parasites.
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Affiliation(s)
- Zhong-Li Liu
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, Gansu 730070, China; State Key laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China
| | - Shuai Wang
- State Key laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China
| | - Xue-Peng Cai
- State Key laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China
| | - Qiao-Ying Zeng
- College of Veterinary Medicine, Gansu Agricultural University, Lanzhou, Gansu 730070, China.
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Nguyen TTM, Dermauw V, Noh J, Chien NH, Dao TTH, Nguyen TGT, Van Hul A, Dorny P. Occurrence of Taenia species in pigs in slaughterhouses in Phu Tho province, northern Vietnam. J Helminthol 2020; 94:e201. [PMID: 33050957 DOI: 10.1017/S0022149X20000863] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Pigs act as the intermediate hosts of the zoonotic tapeworms Taenia solium and Taenia asiatica, as well as of the non-zoonotic Taenia hydatigena. In Vietnam, human taeniasis and cysticercosis have been reported throughout the country; however, data on porcine cysticercosis are scarce. Our study aimed to estimate the prevalence of Taenia spp. in slaughtered pigs in two districts in Phu Tho, a mountainous province in northern Vietnam from where neurocysticercosis patients commonly originate. The carcasses of 399 pigs from 51 small-scale abattoirs were checked for cysticerci, while tongue, liver, masseter muscles, diaphragm and heart were sliced and examined. Retrieved cysticerci underwent polymerase chain reaction-restriction fragment length polymorphism and sequencing for species confirmation. Blood was also collected to detect antibodies by lentil lectin-purified glycoprotein enzyme-linked immunoelectrotransfer blot (LLGP-EITB) and recombinant T24H antigen (rT24H)-EITB and circulating antigens by B158/B60 Ag-ELISA. In two pigs, T. asiatica cysticerci were found, confirming the presence of the parasite in pigs in Vietnam at a low prevalence (0.5%; 95% exact confidence interval (CI): 0-1.19%). Cysticerci of T. solium were found in none of the pigs, although one serum sample was positive for antibodies in both LLGP-EITB and rT24H-EITB. Furthermore, a high prevalence of T. hydatigena cysticercosis was observed (18.0%; 95% Wilson score CI: 14.6-22.1%). In more than half of the T. hydatigena-positive pigs, circulating antigens were detected by Ag-ELISA, confirming that this test cannot be used to diagnose T. solium cysticercosis in this region. Finally, Spirometra erinaceieuropaei was found in one pig liver. It is the first record of this zoonotic cestode species in pigs in Vietnam. Overall, the findings confirmed the complex epidemiology of Taenia spp. in pigs in Vietnam.
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Graff A, Bennion-Pedley E, Jones AK, Ledger ML, Deforce K, Degraeve A, Byl S, Mitchell PD. A comparative study of parasites in three latrines from Medieval and Renaissance Brussels, Belgium (14th-17th centuries). Parasitology 2020; 147:1443-51. [PMID: 32741422 DOI: 10.1017/S0031182020001298] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The aim of this study is to determine the species of parasite that infected the population of Brussels during the Medieval and Renaissance periods, and determine if there was notable variation between different households within the city. We compared multiple sediment layers from cesspits beneath three different latrines dating from the 14th–17th centuries. Helminths and protozoa were detected using microscopy and enzyme-linked immunosorbent assay (ELISA). We identified Ascaris sp., Capillaria sp., Dicrocoelium dendriticum, Entamoeba histolytica, Fasciola hepatica, Giardia duodenalis, Taenia sp. and Trichuris sp. in Medieval samples, and continuing presence of Ascaris sp., D. dendriticum, F. hepatica, G. duodenalis and Trichuris sp. into the Renaissance. While some variation existed between households, there was a broadly consistent pattern with the domination of species spread by fecal contamination of food and drink (whipworm, roundworm and protozoa that cause dysentery). These data allow us to explore diet and hygiene, together with routes for the spread of fecal–oral parasites. Key factors explaining our findings are manuring practices with human excrement in market gardens, and flooding of the polluted River Senne during the 14th–17th centuries.
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Karamon J, Sroka J, Dąbrowska J, Bilska-Zając E, Skrzypek K, Różycki M, Zdybel J, Cencek T. Distribution of Parasitic Helminths in the Small Intestine of the Red Fox ( Vulpes vulpes). Pathogens 2020; 9:E477. [PMID: 32560133 DOI: 10.3390/pathogens9060477] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/08/2020] [Accepted: 06/12/2020] [Indexed: 02/07/2023] Open
Abstract
The aim of the study was to analyze the distribution of the main groups of parasitic helminths within the small intestine of the red fox on the example of animals coming from eastern Poland. Two hundred and sixteen red foxes shot in eastern Poland were used in the investigation. Before examination, each small intestine was divided into three equal parts: anterior (A), middle (M), and posterior (P). Each part was examined separately with the sedimentation and counting technique. Six different types of intestinal parasites were detected: Alaria alata (78.7%), Mesocestoides spp. (78.2%), hookworms (72.7%), Taenia spp. (53.2%), Toxocara/Toxascaris (43.1%), and Echinococcus multilocularis (18.5%). Alaria alata was most often found in A and in the only-A variant. Taenia spp. and Toxocara/Toxascaris occurred often in A and were the second (after A. alata) parasites in terms of frequency occurring in the only-A variant. Mesocestoides spp. was most commonly located in M. Parasites with predilection sites located mainly in M and P were E. multilocularis and hookworms. In all parasite species, the variant covering the entire intestine (A + M + P) was found in samples with a higher intensity compared to variants limited to one or two fragments. Our investigation, as one of the few of its type, conducted a comprehensive analysis of the distribution of intestinal helminths in the small intestine of the red fox. It showed significant differences in the distribution of parasitic helminths in the small intestine of the red fox. Determining typical predilection sites for parasites in the intestine can be helpful in creating effective diagnostic methods.
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Lehman B, Leal SM, Procop GW, O'Connell E, Shaik J, Nash TE, Nutman TB, Jones S, Braunthal S, Shah SN, Cruise MW, Mukhopadhyay S, Banzon J. Disseminated Metacestode Versteria Species Infection in Woman, Pennsylvania, USA 1. Emerg Infect Dis 2019; 25:1429-1431. [PMID: 31211937 PMCID: PMC6590738 DOI: 10.3201/eid2507.190223] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A patient in Pennsylvania, USA, with common variable immunodeficiency sought care for fever, cough, and abdominal pain. Imaging revealed lesions involving multiple organs. Liver resection demonstrated necrotizing granulomas, recognizable tegument, and calcareous corpuscles indicative of an invasive cestode infection. Sequencing revealed 98% identity to a Versteria species of cestode found in mink.
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Karamon J, Sroka J, Dąbrowska J, Bilska-Zając E, Zdybel J, Kochanowski M, Różycki M, Cencek T. First report of Echinococcus multilocularis in cats in Poland: a monitoring study in cats and dogs from a rural area and animal shelter in a highly endemic region. Parasit Vectors 2019; 12:313. [PMID: 31234884 PMCID: PMC6591820 DOI: 10.1186/s13071-019-3573-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 06/19/2019] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Alveolar echinococcosis is a dangerous zoonotic disease caused by larval forms of Echinococcus multilocularis. In its life-cycle, the principal definitive host is the red fox; however, domesticated carnivorous animals (dogs and cats) can also act as definitive hosts. Until now, there were no data concerning this infection in cats in Poland. The aim of this study was to estimate the prevalence of E. multilocularis in cats and dogs originating from rural areas and animal shelters in a region characterised by a high prevalence of E. multilocularis in red foxes. METHODS Samples of faeces were collected from 67 cats and 268 dogs from a rural area (villages and animal shelters) of a highly endemic region in southeastern Poland. Samples were examined using nested PCR (E. multilocularis), multiplex PCR (E. multilocularis, Taenia spp.) and PCR [E. granulosus (s.l.)]. Additionally, faeces were examined microscopically (flotation). Moreover, intestines from 110 red foxes shot in the investigated area were examined (sedimentation and counting technique). RESULTS Positive PCR results for E. multilocularis were obtained in 4 cats (6.0%) and 4 dogs (1.5%). There were no significant differences between groups of animals (from a shelter and with an owner) concerning the prevalence of E. multilocularis in both cats and dogs. Taenia spp. were found in 10 cats (14.9%) (Taenia taeniaeformis and T. hydatigena) and 26 dogs (9.7%) (T. hydatigena, T. serialis, T. taeniaeformis, T. crassiceps, T. pisiformis and T. ovis) and Mesocestoides litteratus was found in 4 cats (6.0%) and 3 dogs (1.1%). All samples were negative for E. granulosus by PCR. Taking into consideration PCR and flotation results, 29 cats (43.3%) and 73 dogs (27.2%) were infected with helminths (26.9 and 11.9%, respectively, were infected with tapeworms). The highly endemic status of the investigated area was confirmed by examination of red foxes: 48.2% of examined red foxes were infected with E. multilocularis. CONCLUSIONS To the best of our knowledge, this study reports the presence of E. multilocularis in cats for the first time in Poland and confirms the role of dogs in this infection in highly endemic areas.
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Affiliation(s)
- Jacek Karamon
- National Veterinary Research Institute, al. Partyzantów 57, 24-100 Pulawy, Poland
| | - Jacek Sroka
- National Veterinary Research Institute, al. Partyzantów 57, 24-100 Pulawy, Poland
| | - Joanna Dąbrowska
- National Veterinary Research Institute, al. Partyzantów 57, 24-100 Pulawy, Poland
| | - Ewa Bilska-Zając
- National Veterinary Research Institute, al. Partyzantów 57, 24-100 Pulawy, Poland
| | - Jolanta Zdybel
- National Veterinary Research Institute, al. Partyzantów 57, 24-100 Pulawy, Poland
| | - Maciej Kochanowski
- National Veterinary Research Institute, al. Partyzantów 57, 24-100 Pulawy, Poland
| | - Mirosław Różycki
- National Veterinary Research Institute, al. Partyzantów 57, 24-100 Pulawy, Poland
| | - Tomasz Cencek
- National Veterinary Research Institute, al. Partyzantów 57, 24-100 Pulawy, Poland
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Tayfur M, Balci MG. Pathological changes in appendectomy specimens including the role of parasites: A retrospective study of 2400 cases of acute appendicitis. Niger J Clin Pract 2019; 22:270-275. [PMID: 30729954 DOI: 10.4103/njcp.njcp_271_18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Parasitic infestation of the appendix is uncommon. Parasitic infections can cause inflammation in the appendix and can imitate acute appendicitis clinically. Enterobius vermicularis and Taenia species are among the most common parasitic agents causing acute appendicitis. Objective We have studied the ratio of parasites causing acute appendicitis in appendectomy specimens and whether there is any relationship between the type of the parasite, histopathological type of acute appendicitis, age of the patient, and gender of the patient in the appendectomy cases. Materials and Methods We retrospectively analyzed the data of 2400 patients who underwent appendectomy with the prediagnosis of acute appendicitis between 1st January 2004 and 31st March 2018 at Erzincan University. The age of the patient, gender of the patient, histopathologic type of acute appendicitis, and the type of parasite were retrospectively analyzed. Positive appendectomy specimens for histopathological features of acute appendicitis were classified into four groups: catarrhal appendicitis, suppurative appendicitis, gangrenous appendicitis, and perforated appendicitis. Results In all, 1451 were males and 949 were females. The mean age was 25.51 years. No acute inflammation was found in 36 appendectomy specimens. The distribution of 2364 cases involving acute appendicitis was as follows: catarrhal appendicitis: 438, suppurative appendicitis: 300, gangrenous appendicitis: 1082, and perforated appendicitis: 544. Parasites were identified in 32 cases. The ratio of appendices to parasites was 1.3%. The number of appendectomy cases with Enterobius vermicularis was 22, and the number with Taenia species was 10. Conclusion Although they are a rare cause of acute appendicitis, parasitic infestations must always be considered. Accurate identification of acute appendicitis and appropriate therapy will improve the quality of life as much as the prevention of acute appendicitis sourced from parasites.
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Affiliation(s)
- M Tayfur
- Department of Pathology, Erzincan University, Faculty of Medicine, Erzincan, Turkey
| | - M G Balci
- Department of Pathology, Erzincan University, Faculty of Medicine, Erzincan, Turkey
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Hidalgo A, Melo A, Romero F, Villanueva J, Carrasco C, Jara P, Venegas J, Fonseca-Salamanca F. A PCR-RFLP assay for discrimination of Echinococcus granulosus sensu stricto and Taenia spp. in dogs stool. Exp Parasitol 2019; 200:42-47. [PMID: 30922888 DOI: 10.1016/j.exppara.2019.03.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 02/28/2019] [Accepted: 03/21/2019] [Indexed: 12/26/2022]
Abstract
In order to develop a method of identification and discrimination of Echinococcus granulosus sensu stricto from faecal samples of dogs infected with taeniid eggs (Echinococcus spp., Taenia spp.), a combined strategy of Polymerase Chain Reaction (PCR) and Restriction Fragments of Lenght Polymorphisms (RFLP) was proposed. Initially, a pair of primers was designed to amplify a fragment of the 12 Subunit of ribosomal RNA gene (12SrRNA) from mitochondrial DNA. The amplified product was digested by SspI restriction enzyme, which in E. granulosus kept the intact fragment of 160 basis pairs (bp), while in Taenia spp. produced two fragments (62 bp and another of 98 bp). The method was tested using positive controls of DNA, in faecal samples experimentally contaminated with eggs of E. granulosus and Taenia spp. and in dogs naturally infected. In all of them, reproducible results were obtained and the primers were specific to amplify only Taeniidae DNA. The sensitivity of the technique was tested, achieving amplification of DNA extractions with a single egg. In conclusion, the technique developed was optimal and easy to identify patent infections by E. granulosus s.s., constituting a possible alternative for epidemiological studies in dogs, especially in endemic areas where this infection occurs.
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Affiliation(s)
- Alejandro Hidalgo
- Department of Preclinical Sciences, Medicine Faculty, Laboratory of Molecular Immunoparasitology, Center of Translational Medicine Scientific and Technological Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile; Doctoral Program of Sciences in Applied Cellular and Molecular Biology, Universidad de La Frontera, Temuco, Chile; School of Veterinary Medicine, Faculty of Natural Resources and Veterinary Medicine, Universidad Santo Tomás, Temuco, Chile
| | - Angélica Melo
- Department of Preclinical Sciences, Medicine Faculty, Laboratory of Molecular Immunoparasitology, Center of Translational Medicine Scientific and Technological Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Fernando Romero
- Department of Preclinical Sciences, Medicine Faculty, Laboratory of Molecular Immunoparasitology, Center of Translational Medicine Scientific and Technological Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile; Doctoral Program of Sciences in Applied Cellular and Molecular Biology, Universidad de La Frontera, Temuco, Chile
| | - José Villanueva
- Department of Preclinical Sciences, Medicine Faculty, Laboratory of Molecular Immunoparasitology, Center of Translational Medicine Scientific and Technological Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile; School of Veterinary Medicine, Faculty of Natural Resources and Veterinary Medicine, Universidad Santo Tomás, Temuco, Chile
| | - Carolina Carrasco
- Department of Preclinical Sciences, Medicine Faculty, Laboratory of Molecular Immunoparasitology, Center of Translational Medicine Scientific and Technological Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Paulina Jara
- Department of Preclinical Sciences, Medicine Faculty, Laboratory of Molecular Immunoparasitology, Center of Translational Medicine Scientific and Technological Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile
| | - Juan Venegas
- Cellular and Molecular Biology Program, Biomedical Sciences Institute (ICBM), Medicine Faculty, Universidad de Chile, Santiago, Chile
| | - Flery Fonseca-Salamanca
- Department of Preclinical Sciences, Medicine Faculty, Laboratory of Molecular Immunoparasitology, Center of Translational Medicine Scientific and Technological Nucleus (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile; Doctoral Program of Sciences in Applied Cellular and Molecular Biology, Universidad de La Frontera, Temuco, Chile.
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Malkamäki S, Näreaho A, Oksanen A, Sukura A. Berries as a potential transmission vehicle for taeniid eggs. Parasitol Int 2019; 70:58-63. [PMID: 30711641 DOI: 10.1016/j.parint.2019.01.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 11/28/2022]
Abstract
Potential role of wild forest berries as a transmission vehicle for taeniid eggs was examined using non-zoonotic Taenia laticollis eggs as a model. The berries studied were bilberries (Vaccinium myrtillus) (1 m2 plot, n = 10) and lingonberries (Vaccinium vitis-idaea) (1 m2 plot, n = 11). The plots in the managed forest were evenly sprayed with 30,000 or 60,000 T. laticollis eggs suspended in water, and berries were collected 24 h after spraying. The berries were rinsed with water, and the water was sieved through a 1-mm and a 63-μm sieve to remove coarse material and through a 20-μm sieve to collect possible eggs. A small proportion of the sieved material was examined by microscopy after treatment with fluorescent Calcofluor White stain, which binds to eggshell chitin. In the recovery tests in artificially spiked samples, the detection limit was 5 eggs in 100 g of commercial frozen bilberries and lingonberries. Taeniid eggs were detected in all of the 10 experimentally contaminated bilberry samples and in 10 of 11 lingonberry samples. The sieved debris was also analyzed for T. laticollis DNA using semi-quantitative PCR. All samples were positive in quantitative SYBR Green real-time PCR using a T. laticollis-specific primer pair amplifying a short fragment of mitochondrial NADH dehydrogenase subunit 1 gene. This indicates that forest berries contaminated in shrubs contained T. laticollis eggs, and that berries can serve as a vehicle for taeniid eggs and may pose a possible risk to humans.
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Affiliation(s)
- Sanna Malkamäki
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki (FINPAR), Finland.
| | - Anu Näreaho
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki (FINPAR), Finland
| | - Antti Oksanen
- Finnish Food Safety Authority Evira (FINPAR), Oulu, Finland
| | - Antti Sukura
- Department of Veterinary Biosciences, Faculty of Veterinary Medicine, University of Helsinki (FINPAR), Finland
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Vega-Angeles VT, Terrazas LI, Ledesma-Soto Y, Jiménez L, Landa A. Taenia solium glutathione transferase fraction activates macrophages and favors the development of Th1-type response. Biosci Rep 2019; 39:BSR20181132. [PMID: 30538171 DOI: 10.1042/BSR20181132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 11/21/2018] [Accepted: 11/23/2018] [Indexed: 12/12/2022] Open
Abstract
Glutathione (GSH) transferase (GST) is an essential enzyme in cestodes for the detoxification of xenobiotics. In Taenia solium, two GSTs (Ts25GST and Ts26GST kDa) were isolated as a fraction (SGSTF) by GSH-Sepharose-4B. Both are located on the tegument. Immunization assays with SGSTF reduced up to 90% of the parasitic load in a murine model of cysticercosis. It prompted us to investigate how SGSTF induces this protective immune response. To test it, we exposed peritoneal macrophages to SGSTF for 24 h; such exposure favored the production of IL-12, TNF, and IL-10 as well as the expression of nitric oxide synthase 2 inducible (Nos2) and CD86, but did not induce the expression of chitinase-like 3 (Chil3). Confocal microscopy showed that the macrophages internalize the SGSTF which co-localized after 1 h with MHC-II in their plasma membranes. Macrophages exposed to SGSTF and co-cultured with anti-CD3 pre-activated T CD4+ cells, enhanced the proliferation of CD4+ cells, induced high interferon-γ (IFN-γ) secretion, and elevated the expression of CD25 and CD69, molecules associated with cell activation. Similar assay using T CD4+ cells from DO11.10 mice and ovalbumin (OVA) peptide+SGSTF as stimuli, showed enhanced cell proliferation and OVA-specific IFN-γ secretion. These data are in-line with those indicating that the P1, P5, and P6 peptides of Schistosoma japonicum 28GST highly promote T-cell proliferation and Th1 response in vitro. We found that such peptides are also present on Ts25GST and Ts26GST. It suggests that SGSTF activates peritoneal macrophages to a classically activated-like phenotype, and that these macrophages induce the differentiation of T CD4+ cells toward a Th1-type response.
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Htun NSN, Odermatt P, Paboriboune P, Sayasone S, Vongsakid M, Phimolsarn-Nusith V, Tran XD, Ounnavong PS, Andriama-Hefasoa N, Senvanpan ND, Homsana A, Lianosay B, Xayavong D, Robinson DR, Bounsavath P, Prasayasith PP, Syphan SD, Lu YX, Thilakoun K, Xaiyaphet XS, Vongngakesone PT, Eze IC, Imboden M, Sripa B, Reinharz D, Probst-Hensch N. Association between helminth infections and diabetes mellitus in adults from the Lao People's Democratic Republic: a cross-sectional study. Infect Dis Poverty 2018; 7:105. [PMID: 30396368 PMCID: PMC6219195 DOI: 10.1186/s40249-018-0488-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 10/02/2018] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND As a result of epidemiological transition, the health systems of low- and middle-income countries are increasingly faced with a dual disease burden of infectious diseases and emerging non-communicable diseases. Little is known about the mutual influence of these two disease groups. The aim of this study was to investigate the co-occurrence of helminth infections and diabetes mellitus in adults in Lao People's Democratic Republic (Lao PDR). METHODS We conducted a cross-sectional study among 1600 randomly selected adults aged 35 and older from four different socio-economical and ecological provinces. Information on socio-demographics, risk factors and health conditions was obtained from personal interviews. Clinical assessments including anthropometry (height, weight, waist and hip circumference) and blood pressure measurements were also conducted. Diabetes was classified based on self-reported diagnoses and a point-of-care glycated haemoglobin (HbA1c) test from finger prick blood samples. Stool samples for helminth diagnosis were examined with formalin-ether concentration technique for intestinal parasitic infections. The independent associations of helminth infections with diabetic status and HbA1c were assessed using multiple regression analyses. RESULTS The prevalence of pre-diabetes and diabetes was 37.3% and 22.8%, respectively. Fifty-six percent of diabetic cases were undiagnosed and 85% of diagnosed diabetic cases had poor glycemic control. Participants from rural areas and from southern parts of the country had higher infection rates, with Opisthorchis viverrini, being the most common helminth infection (30.5%). We found a positive association between Taenia spp. infections and HbA1c (β = 0.117; 95% CI: 0.042-0.200) and diabetes mellitus risk (OR = 2.98; 95% CI: 1.10-8.05). No other helminth species was associated with glycated hemoglobin. CONCLUSIONS Hyperglycaemia and diabetic rates in Lao PDR are alarmingly high, but consistent with other high rates in the region. Given the high rates of under-diagnosis and poorly-controlled glycaemia in diabetes mellitus patients, routine diabetes screening and treatment is essential for the local healthcare system. Large longitudinal cohorts integrating biomarkers are warranted in the search of causal diabetes mellitus risk factors in the region. Common intestinal helminth infections, including O. viverrini, are unlikely to explain the high diabetes mellitus rates observed.
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Affiliation(s)
- Nan Shwe Nwe Htun
- 0000 0004 0587 0574grid.416786.aDepartment of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, PO Box, 4002, 4051 Basel, Switzerland
- 0000 0004 1937 0642grid.6612.3University of Basel, Basel, Switzerland
| | - Peter Odermatt
- 0000 0004 0587 0574grid.416786.aDepartment of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, PO Box, 4002, 4051 Basel, Switzerland
- 0000 0004 1937 0642grid.6612.3University of Basel, Basel, Switzerland
| | - Phimpha Paboriboune
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Somphou Sayasone
- 0000 0004 0587 0574grid.416786.aDepartment of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, PO Box, 4002, 4051 Basel, Switzerland
- grid.415768.9Lao Tropical and Public Health Institute, Ministry of Health, Vientiane, Lao People’s Democratic Republic
| | - Malisa Vongsakid
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Vilayouth Phimolsarn-Nusith
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Xuan Duong Tran
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Phoum-Savath Ounnavong
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Navalone Andriama-Hefasoa
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Nilun-Done Senvanpan
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Anousine Homsana
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Baocher Lianosay
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Dalouny Xayavong
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | | | - Phaivanh Bounsavath
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Phoy-Phaylinh Prasayasith
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Seng-Davanh Syphan
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Yi-Xiao Lu
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Kanchana Thilakoun
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Xaipa-Song Xaiyaphet
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Phout-Tasin Vongngakesone
- The Francophone Institute for Tropical Medicine (International Program for Health in the Tropics), Vientiane, Lao PDR
| | - Ikenna C Eze
- 0000 0004 0587 0574grid.416786.aDepartment of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, PO Box, 4002, 4051 Basel, Switzerland
- 0000 0004 1937 0642grid.6612.3University of Basel, Basel, Switzerland
| | - Medea Imboden
- 0000 0004 0587 0574grid.416786.aDepartment of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, PO Box, 4002, 4051 Basel, Switzerland
- 0000 0004 1937 0642grid.6612.3University of Basel, Basel, Switzerland
| | - Banchob Sripa
- 0000 0004 0470 0856grid.9786.0Tropical Disease Research Laboratory, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Daniel Reinharz
- 0000 0004 1936 8390grid.23856.3aUniversité Laval, Quebec City, Canada
| | - Nicole Probst-Hensch
- 0000 0004 0587 0574grid.416786.aDepartment of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, PO Box, 4002, 4051 Basel, Switzerland
- 0000 0004 1937 0642grid.6612.3University of Basel, Basel, Switzerland
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Karamon J, Dąbrowska J, Kochanowski M, Samorek-Pieróg M, Sroka J, Różycki M, Bilska-Zając E, Zdybel J, Cencek T. Prevalence of intestinal helminths of red foxes (Vulpes vulpes) in central Europe (Poland): a significant zoonotic threat. Parasit Vectors 2018; 11:436. [PMID: 30055657 PMCID: PMC6064108 DOI: 10.1186/s13071-018-3021-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 07/16/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The red fox (Vulpes vulpes) is widely distributed in the world; in central Europe, it is the most numerous wild species of the family Canidae. It can play the role of a definitive host for many intestinal parasites, including zoonotic helminths. Poland, with its geographical location (central Europe), is an interesting area for parasitological investigations of this species. The aim of this study was to evaluate and compare the prevalence of intestinal helminths in red foxes in different regions of Poland. METHODS Intestines of 473 red foxes from four different regions were examined using the sedimentation and counting technique (SCT). In addition, 344 samples of faeces were examined using flotation. RESULTS Overall, intestinal helminths were found in 98.9% of red foxes. The average prevalence of detected parasites was as follows: Mesocestoides spp. (84.1%); hookworms (67.9%); Alaria alata (61.5%); Toxocara/Toxascaris (49.5%); Taenia spp. (42.5%); Echinococcus multilocularis (25.6%); and Trichuris vulpis (2.3%). The prevalence of the majority of parasite species was similar in each region. Significant differences between regions were observed in the case of E. multilocularis: a low prevalence in the south-western and northern regions (0% and 0.9%, respectively) and a high prevalence in the south-east and northeast (39.3% and 42.7%, respectively). In the case of A. alata, important differences were found between northern (96.5% and 93.7% in northern and northeast regions, respectively) and southern regions (15.2% and 24.7% for south-western and south-east regions, respectively). The percentage of positive samples obtained with coproscopic examination (except for Trichuris) was significantly lower than that obtained with SCT. Analysis of the prevalence estimated in individual regions with the use of both methods (flotation and SCT) showed a high correlation for all parasite species (except for Mesocestoides spp.). The flotation method also allowed us to detect the eggs of the lung nematode Eucoleus aerophilus (syn. Capillaria aerophila) (76.2% of positive foxes). CONCLUSIONS This study showed a very high percentage of red foxes infected with intestinal helminths in different parts of Poland. Depending on the location, some differences were observed regarding the prevalence of dangerous zoonotic parasites, which should be considered in the assessment of infection risk for humans.
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Affiliation(s)
- Jacek Karamon
- National Veterinary Research Institute, al. Partyzantow 57, 24-100, Pulawy, Poland.
| | - Joanna Dąbrowska
- National Veterinary Research Institute, al. Partyzantow 57, 24-100, Pulawy, Poland
| | - Maciej Kochanowski
- National Veterinary Research Institute, al. Partyzantow 57, 24-100, Pulawy, Poland
| | | | - Jacek Sroka
- National Veterinary Research Institute, al. Partyzantow 57, 24-100, Pulawy, Poland
| | - Mirosław Różycki
- National Veterinary Research Institute, al. Partyzantow 57, 24-100, Pulawy, Poland
| | - Ewa Bilska-Zając
- National Veterinary Research Institute, al. Partyzantow 57, 24-100, Pulawy, Poland
| | - Jolanta Zdybel
- National Veterinary Research Institute, al. Partyzantow 57, 24-100, Pulawy, Poland
| | - Tomasz Cencek
- National Veterinary Research Institute, al. Partyzantow 57, 24-100, Pulawy, Poland
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Bleyer M, Risch T, Roos C, Kaup FJ, Mätz-Rensing K. TAENIA CRASSICEPS CYSTICERCOSIS IN A NILGIRI LANGUR ( SEMNOPITHECUS JOHNII). J Zoo Wildl Med 2018; 49:501-4. [PMID: 29900783 DOI: 10.1638/2017-0156.1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A captive-born adult female Nilgiri langur ( Semnopithecus johnii) developed an edematous swelling of the left thigh and a firm mass around the right ankle joint. The animal also suffered from lethargy and anorexia and was euthanized because of poor general condition. Necropsy revealed that the skeletal muscle of the left thigh had been replaced by a multilocular cystic mass containing numerous sand-grain-sized whitish structures. Small cysts were also present in the lung and the myocardium. The mass of the right ankle joint was histologically consistent with a myxosarcoma. In contrast, the cystic masses from the left thigh, the lung, and the myocardium represented metacestode tissue with evidence of numerous larval cestodes consistent with cysticerci. Cysticerci showed morphological characteristics of Cysticercus longicollis, the larval form of Taenia crassiceps, which was confirmed by genetic analysis. This is the first documented case of a Taenia crassiceps cysticercosis in an Old World monkey species.
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Al-Sabi MNS, Rääf L, Osterman-Lind E, Uhlhorn H, Kapel CMO. Gastrointestinal helminths of gray wolves (Canis lupus lupus) from Sweden. Parasitol Res 2018; 117:1891-8. [PMID: 29696393 DOI: 10.1007/s00436-018-5881-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 04/16/2018] [Indexed: 10/17/2022]
Abstract
As the Scandinavian wolf population is limited in size, it is only rarely subject to systematic studies on its disease biology, especially gastrointestinal parasites. Therefore, this study aims to describe the prevalence of gastrointestinal helminths of gray wolves hunted on a limited license as a part of a wildlife management program. Helminths of 20 wolves were examined post mortem by macroscopy and coprology. Intestinal worms of five species were recovered from 18 wolves (90%): Uncinaria stenocephala (90%), Taenia spp. (45%), Alaria alata (25%), and Mesocestoides spp. (5%). Of the taeniid specimens typed by multiplex PCR and sequencing of the cox1 gene, 25% belonged to Taenia hydatigena and 25% to Taenia krabbei. The overall species diversity was low compared to findings from wolves of the northern hemisphere. Fecal eggs of Eucoleus boehmi were detected in 12 wolves (60%). Fecal metastrongylid larvae were found in seven individuals (39%), but PCR analyses specific for Angiostrongylus vasorum were negative. The wolves were in good body condition suggesting that the parasite infestation had no negative impact on the general health of the examined wolves. Although some of the recovered parasite species have zoonotic or veterinary impact, it is not likely that the spare wolf population pose substantial threat to human or veterinary health.
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Adenuga A, Mateus A, Ty C, Borin K, Holl D, San S, Duggan V, Clark M, Smith GJD, Coker R, Vaughn A, Rudge JW. Seroprevalence and awareness of porcine cysticercosis across different pig production systems in south-central Cambodia. Parasite Epidemiol Control 2017; 3:1-12. [PMID: 29774294 PMCID: PMC5952675 DOI: 10.1016/j.parepi.2017.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 10/31/2017] [Accepted: 10/31/2017] [Indexed: 10/30/2022] Open
Abstract
Background Taeniasis/cysticercosis, caused by the pork tapeworm Taenia solium, represents an important public health and economic burden in endemic countries. However, there is a paucity of data on infection among pigs in many parts of Southeast Asia, particularly Cambodia. We aimed to estimate seroprevalence of porcine cysticercosis, and investigate husbandary practices and knowledge of the disease among livestock workers, across different pig sector units in south-central Cambodia. Methods A cross sectional survey was conducted among pig smallholders, commercial farms, slaughterhouses and traders/middlemen from south-central Cambodia, selected through multistage sampling in proportion to local pig populations sizes. Questionnaires were administered to 163 pig workers to obtain data pig production, trading and slaughtering practices. Sera from 620 pigs were tested for Taenia antigens using a commercial ELISA-based test. Associations between seroprevalence and pig husbandry practices were assessed using generalised linear mixed models, adjusting for random-effects at herd-level. Results Of 620 pigs sampled, 29 (4.7%) tested positive for Taenia antigens. Seropositivity was associated with type of pig sector unit (P = 0.008), with the highest seroprevalence among pigs sampled from traders/middlemen (16.7%; 95% CI: 4.4%-37.8%), smallholders (7.6%; 95% CI: 3.8%-14.1%) and slaughterhouses (4.1%; 95% CI: 2.0%-7.5%), while none of the pigs sampled from small/medium or large commercial farms tested positive. Although the vast majority of pigs were penned, practices that might facilitate human-to-pig transmission, such as use of household waste and surface water sources to feed pigs, were prevalent among smallholders. However these were not found to be significantly associated with infection. Of 163 interviewed pig workers, 115 (70.5%) were aware of porcine cysticercosis, and 78 (47.8%) also knew it could affect humans. Twenty-six (16.0%) reported having noticed lesions typical of cysticercosis in their pigs. Conclusions Despite most pigs being kept confined in pens rather than raised in free-roaming systems, porcine cysticercosis appears to be endemic in south-central Cambodia and is associated with smallholder production. Further investigation is needed to identify which Taenia species are causing infections among pigs, and how seroprevalence and zoonotic risk may vary across the country, to understand the risks to public health and assess where interventions might be needed.
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Affiliation(s)
- Aderosoye Adenuga
- Royal Veterinary College, Hawkshead Campus, Hawkshead Lane, North Mymms, Hatfield AL9 7TA, UK.,Communicable Diseases Policy Research Group, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK
| | - Ana Mateus
- Royal Veterinary College, Hawkshead Campus, Hawkshead Lane, North Mymms, Hatfield AL9 7TA, UK
| | - Chhay Ty
- Centre for Livestock and Agriculture Development, Phnom Penh, Cambodia
| | - Khieu Borin
- Centre for Livestock and Agriculture Development, Phnom Penh, Cambodia
| | - Davun Holl
- National Veterinary Research Institute, Department of Animal Health and Production, Phnom Penh, Cambodia
| | - Sorn San
- National Veterinary Research Institute, Department of Animal Health and Production, Phnom Penh, Cambodia
| | - Victoria Duggan
- Communicable Diseases Policy Research Group, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK
| | - Madeleine Clark
- Communicable Diseases Policy Research Group, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK
| | | | - Richard Coker
- Communicable Diseases Policy Research Group, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK.,Faculty of Public Health, Mahidol University, Bangkok 10400, Thailand
| | | | - James W Rudge
- Communicable Diseases Policy Research Group, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK.,Faculty of Public Health, Mahidol University, Bangkok 10400, Thailand
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Fèvre EM, de Glanville WA, Thomas LF, Cook EAJ, Kariuki S, Wamae CN. An integrated study of human and animal infectious disease in the Lake Victoria crescent small-holder crop-livestock production system, Kenya. BMC Infect Dis 2017; 17:457. [PMID: 28666412 PMCID: PMC5493856 DOI: 10.1186/s12879-017-2559-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Accepted: 06/20/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The neglected zoonotic diseases (NZD) are an understudied group that are a major cause of illness throughout the developing world. In general, little is known about the prevalence and burden of NZDs in affected communities, particularly in relation to other infectious diseases with which they are often co-endemic. We describe the design and descriptive epidemiological outputs from an integrated study of human and animal zoonotic and non-zoonotic disease in a rural farming community in western Kenya. METHODS This cross-sectional survey involved 2113 people, their cattle (n = 983) and pigs (n = 91). People and animals were tested for infection or exposure to a wide range of zoonotic and non-zoonotic pathogens. Prevalence estimates, with adjustment for the complex study design, were derived. Evidence for spatial clustering in exposure or infection was identified using the spatial scan statistic. RESULTS There was a high prevalence of human parasitism in the community, particularly with hookworm (Ancylostoma duodenale or Necator americanus) (36.3% (95% CI 32.8-39.9)), Entamoeba histolytica/dispar (30.1% (95% CI 27.5-32.8)), and Plasmodium falciparum (29.4% (95% CI 26.8-32.0)). Human infection with Taenia spp. was also prevalent (19.7% (95% CI 16.7-22.7)), while exposure to other zoonotic pathogens was comparatively rarer (Brucella spp., 0.6% (95% CI 0.2-0.9); Coxiella burnetii, 2.2% (95% CI 1.5-2.9); Rift Valley fever, 0.5% (95% CI 0.2-0.8)). A low prevalence of exposure to Brucella spp. was observed in cattle (0.26% (95% CI 0-0.56). This was higher for Rift Valley fever virus (1.4% (95% CI 0.5-2.22)) and C. burnetii (10.0% (95% CI 7.7-12.2)). The prevalence of Taenia spp. cysticercosis was 53.5% (95% CI 48.7-58.3) in cattle and 17.2% (95% CI 9.1-25.3) in pigs. Mycobacterium bovis infection was found in 2.2% of cattle (95% CI 1.3-3.2), while the prevalence of infection with Mycobacterium spp. was 8.2% (95% CI 6.8-9.6) in people. CONCLUSION Zoonotic infections in people and animals occur in the context of a wide range of co-endemic pathogens in a rural community in western Kenya. The wide diversity of pathogens under study provides a unique opportunity to explore the distribution and determinants of infection in a multi-pathogen, multi-host system.
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Affiliation(s)
- Eric M. Fèvre
- Institute of Infection and Global Health, University of Liverpool, Leahurst Campus, Neston, CH64 7TE UK
- International Livestock Research Institute (ILRI), Old Naivasha Road, PO Box 30709-00100, Nairobi, Kenya
| | - William A. de Glanville
- International Livestock Research Institute (ILRI), Old Naivasha Road, PO Box 30709-00100, Nairobi, Kenya
- Centre for Immunity, Infection and Evolution, Institute for Immunology and Infection Research, School of Biological Sciences, Kings Buildings, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT UK
| | - Lian F. Thomas
- International Livestock Research Institute (ILRI), Old Naivasha Road, PO Box 30709-00100, Nairobi, Kenya
- Centre for Immunity, Infection and Evolution, Institute for Immunology and Infection Research, School of Biological Sciences, Kings Buildings, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT UK
| | - Elizabeth A. J. Cook
- International Livestock Research Institute (ILRI), Old Naivasha Road, PO Box 30709-00100, Nairobi, Kenya
- Centre for Immunity, Infection and Evolution, Institute for Immunology and Infection Research, School of Biological Sciences, Kings Buildings, University of Edinburgh, West Mains Road, Edinburgh, EH9 3JT UK
| | - Samuel Kariuki
- Centre for Microbiology Research, Kenya Medical Research Institute, PO Box 43640, Nairobi, Kenya
| | - Claire N. Wamae
- Centre for Microbiology Research, Kenya Medical Research Institute, PO Box 43640, Nairobi, Kenya
- Current address: Department of Microbiology, School of Medicine, Mount Kenya University, PO BOX 342-00100, Thika, Kenya
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Ancarola ME, Marcilla A, Herz M, Macchiaroli N, Pérez M, Asurmendi S, Brehm K, Poncini C, Rosenzvit M, Cucher M. Cestode parasites release extracellular vesicles with microRNAs and immunodiagnostic protein cargo. Int J Parasitol 2017; 47:675-686. [PMID: 28668323 DOI: 10.1016/j.ijpara.2017.05.003] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 04/21/2017] [Accepted: 05/01/2017] [Indexed: 12/17/2022]
Abstract
Intercellular communication is crucial in multiple aspects of cell biology. This interaction can be mediated by several mechanisms including extracellular vesicle (EV) transfer. EV secretion by parasites has been reported in protozoans, trematodes and nematodes. Here we report that this mechanism is present in three different species of cestodes, Taenia crassiceps, Mesocestoides corti and Echinococcus multilocularis. To confirm this we determined, in vitro, the presence of EVs in culture supernatants by transmission electron microscopy. Interestingly, while T. crassiceps and M. corti metacestodes secrete membranous structures into the culture media, similar vesicles were observed in the interface of the germinal and laminated layers of E. multilocularis metacestodes and were hardly detected in culture supernatants. We then determined the protein cargo in the EV-enriched secreted fractions of T. crassiceps and M. corti conditioned media by LC-MS/MS. Among the identified proteins, eukaryotic vesicle-enriched proteins were identified as expected, but also proteins used for cestode disease diagnosis, proteins related to neurotransmission, lipid binding proteins as well as host immunoglobulins and complement factors. Finally, we confirmed by capillary electrophoresis the presence of intravesicular RNA for both parasites and detected microRNAs by reverse transcription-PCR. This is the first report of EV secretion in cestode parasites and of an RNA secretion mechanism. These findings will provide valuable data not only for basic cestode biology but also for the rational search for new diagnostic targets.
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Affiliation(s)
- María Eugenia Ancarola
- Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires (UBA), Paraguay 2155, Piso 13, Buenos Aires, Argentina
| | - Antonio Marcilla
- Área de Parasitología, Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Universitat de València, Burjassot, Valencia, Spain; Joint Research Unit on Endocrinology, Nutrition and Clinical Dietetics, Health Research Institute-La Fe, Universitat de València, 46026 Valencia, Spain
| | - Michaela Herz
- University of Würzburg, Institute of Hygiene and Microbiology, Josef-Schneider-Strasse 2, D-97080 Würzburg, Germany
| | - Natalia Macchiaroli
- Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires (UBA), Paraguay 2155, Piso 13, Buenos Aires, Argentina
| | - Matías Pérez
- Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires (UBA), Paraguay 2155, Piso 13, Buenos Aires, Argentina
| | - Sebastián Asurmendi
- Instituto de Biotecnología, CICVyA-INTA, Dr. N. Repetto y Los Reseros s/n, 1686 Hurlingham, Buenos Aires, Argentina
| | - Klaus Brehm
- University of Würzburg, Institute of Hygiene and Microbiology, Josef-Schneider-Strasse 2, D-97080 Würzburg, Germany
| | - Carolina Poncini
- Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires (UBA), Paraguay 2155, Piso 13, Buenos Aires, Argentina
| | - Mara Rosenzvit
- Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires (UBA), Paraguay 2155, Piso 13, Buenos Aires, Argentina
| | - Marcela Cucher
- Instituto de Investigaciones en Microbiología y Parasitología Médica (IMPaM, UBA-CONICET), Facultad de Medicina, Universidad de Buenos Aires (UBA), Paraguay 2155, Piso 13, Buenos Aires, Argentina.
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UYSAL E, DOKUR M. The Helminths Causing Surgical or Endoscopic Abdominal Intervention: A Review Article. Iran J Parasitol 2017; 12:156-168. [PMID: 28761475 PMCID: PMC5527025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Helminths sometimes require surgical or endoscopic intervention. Helminths may cause acute abdomen, mechanical intestinal obstruction, gastrointestinal hemorrhage, perforation, hepatitis, pancreatitis, and appendicitis. This study aimed to determine the surgical diseases that helminths cause and to gather, analyze the case reports, case series and original articles about this topic in literature. METHODS This study was designed as a retrospective observational study. In order to determine the studies published in literature, the search limits in Pub-Med database were set to 1 Jan 1957 and 31 Mar 2016 (59 yr), and the articles regarding Helminth-Surgery-Endoscopy were taken into examination. Among 521 articles scanned, 337 specific ones were involved in this study. RESULTS The most common surgical pathology was found to be in Ascaris lumbricoides group. Enterobius vermicularis was found to be the parasite that caused highest amount of acute appendicitis. Anisakiasis was observed to seem mainly because of abdominal pain and mechanical intestinal obstruction. Strongyloides stercoraries causes duodenal pathologies such as duodenal obstruction and duodenitis. Taenia saginata comes into prominence with appendicitis and gastrointestinal perforations. Fasciola hepatica exhibits biliary tract involvement and causes common bile duct obstruction. Hookworms were observed to arise along with gastrointestinal hemorrhage and anemia. Trichuris trichiuria draws attention with gastrointestinal hemorrhage, mechanical intestinal obstruction. CONCLUSION Helminths may lead to life-threatening clinic conditions such as acute abdomen, gastrointestinal perforation, intestinal obstruction, and hemorrhages. There is a relationship between surgery and helminths. It is very important for surgeons to consider and remember helminths in differential diagnoses during their daily routines.
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Affiliation(s)
- Erdal UYSAL
- Dept. of General Surgery, School of Medicine, Sanko University, Gaziantep, Turkey,Correspondence
| | - Mehmet DOKUR
- Dept. of Emergency, Necip Fazil City Hospital, Kahramanmaras, Turkey
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Shamsaddini S, Mohammadi MA, Mirbadie SR, Nasibi S, Rostami S, Dehghani M, Fasihi Harandi M. Evaluation of Microsatellites Markers to Discriminate Four Main Taeniid Tapeworms of Dogs. Iran J Parasitol 2017; 12:292-7. [PMID: 28761491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/29/2022]
Abstract
BACKGROUND Echinococcus granulosus, Taenia multiceps, Taenia ovis and Taenia hydatigena are among the most prevalent taeniid species of dogs. These tapeworms infect ruminant and humans as intermediate hosts and domestic/wild carnivores as the definitive hosts. Molecular tools using hypervariable microsatellite regions might provide more information about parasite variation. Highly variable and specific tools are needed for transmission tracking studies of canine echinococcosis as an essential element for implementation of hydatid control programs. Suitable microsatellite markers used so far are EmsJ, EmsK, EmsB, EMms1, Egmsca1, Egmsga1, U1 snRNA. The purpose of the present study was to determine the microsatellite variability of EmsB as well as six other microsatellites in major taeniid species infecting dogs in Iran. METHODS Twenty isolates of each of the four Taeniidae tapeworms were collected from sheep during routine veterinary inspection in Tehran, Alborz and Kerman provinces from October 2010 to May 2011. After DNA extraction, PCR was set up with optimum conditions using specific primers for each individual microsatellite marker. All the PCR products were evaluated by agarose gel electrophoresis. We used SDS-PAGE for evaluating patterns of PCR products in the tapeworms. RESULTS E. granulosus as well as Taenia species could be differentiated based on EmsB microsatellite patterns. The electrophoresis patterns of two taeniid genera were readily distinguishable. EmsB could be specifically used in epidemiological studies of canine echinococcosis. CONCLUSION Different patterns of EmsB proved this microsatellite marker as a reliable tool for epidemiological studies on canine echinococcosis.
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Fleury A, Sastre P, Sciutto E, Correia S, Monedero A, Toledo A, Hernandez M, Harrison LJS, Parkhouse RME. A lateral flow assay (LFA) for the rapid detection of extraparenchymal neurocysticercosis using cerebrospinal fluid. Exp Parasitol 2016; 171:S0014-4894(16)30277-6. [PMID: 27983954 DOI: 10.1016/j.exppara.2016.10.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 09/13/2016] [Accepted: 10/26/2016] [Indexed: 12/01/2022]
Abstract
A lateral flow assay (LFA) for the diagnosis and monitoring of extraparenchymal neurocysticercosis, has been developed. The assay is based on the use of the monoclonal antibody HP10, and when applied to cerebrospinal fluid, correctly identified 34 cases of active extraparenchymal neurocysticercosis, but was negative with 26 samples from treated and cured neurocysticercosis patients and with 20 samples from unrelated neurological diseases. There was complete agreement between the HP10 Ag-ELISA results and the HP10-LFA. The HP10-LFA thus has utility for diagnosis and treatment of extraparenchymal neurocysticercosis, frequently a more dangerous form of the infection.
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Affiliation(s)
- Agnes Fleury
- Unidad de Neuroinflamación (Instituto de Investigaciones Biomédicas-UNAM, Instituto Nacional de Neurología y Neurocirugia, Facultad de Médicina-UNAM), Insurgentes Sur 3877, Colonia La Fama, delegación Tlalpan, Mexico D.F, Mexico; Neurocysticercosis Clinic, Instituto Nacional de Neurología y Neurocirugia, Mexico D.F, Mexico.
| | - Patricia Sastre
- Inmunología y Genética Aplicada S.A. (INGENASA), C/Hermanos García Noblejas 39, 28037 Madrid, Spain.
| | - Edda Sciutto
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México D.F. 04510, Mexico.
| | - Silvia Correia
- Instituto Gulbenkian de Ciência, 2780-156, Oeiras, Portugal.
| | - Alejandro Monedero
- Inmunología y Genética Aplicada S.A. (INGENASA), C/Hermanos García Noblejas 39, 28037 Madrid, Spain.
| | - Andrea Toledo
- Unidad de Neuroinflamación (Instituto de Investigaciones Biomédicas-UNAM, Instituto Nacional de Neurología y Neurocirugia, Facultad de Médicina-UNAM), Insurgentes Sur 3877, Colonia La Fama, delegación Tlalpan, Mexico D.F, Mexico.
| | - Maricela Hernandez
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México D.F. 04510, Mexico.
| | - Leslie J S Harrison
- University of Edinburgh, Royal (Dick) School of Veterinary Science, Easter Bush Veterinary Centre, Easter Bush, ROSLIN, Midlothian, EH259RG Scotland, UK.
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Monreal-Escalante E, Govea-Alonso DO, Hernández M, Cervantes J, Salazar-González JA, Romero-Maldonado A, Rosas G, Garate T, Fragoso G, Sciutto E, Rosales-Mendoza S. Towards the development of an oral vaccine against porcine cysticercosis: expression of the protective HP6/TSOL18 antigen in transgenic carrots cells. Planta 2016; 243:675-685. [PMID: 26613600 DOI: 10.1007/s00425-015-2431-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 11/07/2015] [Indexed: 06/05/2023]
Abstract
The Taenia solium HP6/TSOL18 antigen was produced in carrot cells, yielding an immunogenic protein that induced significant protection in an experimental murine model against T. crassiceps cysticercosis when orally administered. This result supports the potential of HP6/TSOL18-carrot as a low-cost anti-cysticercosis vaccine candidate. Cysticercosis is a zoonosis caused by Taenia solium that can be prevented by interrupting the parasite life cycle through pig vaccination. Several injectable vaccine candidates have been reported, but the logistic difficulties and costs for its application limited its use in nationwide control programs. Oral plant-based vaccines can deal with this limitation, because of their easy administration and low cost. A stable expression of the HP6/TSOL18 anti-T. solium cysticercosis protective antigen in carrot calli transformed with an optimized transgene is herein reported. An antigen accumulation up to 14 µg g(-1) of dry-weight biomass was achieved in the generated carrot lines. Mouse immunization with one of the transformed calli induced both specific IgG and IgA anti-HP6/TSOL18 antibodies. A statistically significant reduction in the expected number of T. crassiceps cysticerci was observed in mice orally immunized with carrot-made HP6/TSOL18, in a similar extent to that obtained by subcutaneous immunization with recombinant HP6/TSOL18 protein. In this study, a new oral plant-made version of the HP6/TSOL18 anti-cysticercosis vaccine is reported. The vaccine candidate should be further tested against porcine cysticercosis.
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Affiliation(s)
- Elizabeth Monreal-Escalante
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Dania O Govea-Alonso
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Marisela Hernández
- Dpto. Inmunología. Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Mexico, D.F., Mexico
| | - Jacquelynne Cervantes
- Dpto. Inmunología. Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Mexico, D.F., Mexico
| | - Jorge A Salazar-González
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Andrea Romero-Maldonado
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico
| | - Gabriela Rosas
- Facultad de Medicina, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Teresa Garate
- Dpto. de Parasitología, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, 28220, Madrid, Spain
| | - Gladis Fragoso
- Dpto. Inmunología. Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Mexico, D.F., Mexico
| | - Edda Sciutto
- Dpto. Inmunología. Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar, Ciudad Universitaria, 04510, Mexico, D.F., Mexico.
| | - Sergio Rosales-Mendoza
- Laboratorio de Biofarmacéuticos Recombinantes, Facultad de Ciencias Químicas, Universidad Autónoma de San Luis Potosí, Av. Dr. Manuel Nava 6, 78210, San Luis Potosí, Mexico.
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49
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Roelfsema JH, Nozari N, Pinelli E, Kortbeek LM. Novel PCRs for differential diagnosis of cestodes. Exp Parasitol 2015; 161:20-6. [PMID: 26704662 DOI: 10.1016/j.exppara.2015.12.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 09/11/2015] [Accepted: 12/14/2015] [Indexed: 10/22/2022]
Abstract
Cestodes or tapeworms belong to a diverse group of helminths. The adult Taenia saginata and Taenia solium tapeworm can infest the human gut and the larval stage of Echinococcus spp. and T. solium can infect tissues of the human body, causing serious disease. Molecular diagnostics can be performed on proglottids, eggs and on cyst fluids taken by biopsy. Detection of cestodes when a helminthic infection is suspected is of vital importance and species determination is required for appropriate patient care. For routine diagnostics a single test that is able to detect and type a range of cestodes is preferable. We sought to improve our diagnostic procedure that used to rely on PCR and subsequent sequencing of the Cox1 and Nad1 genes. We have compared these PCRs with novel PCRs on the 12S rRNA and Nad5 gene and established the sensitivity and specificity. A single PCR on the 12S gene proved to be very suitable for detection and specification of Taenia sp. and Echinococcus sp. Both targets harbour enough polymorphic sites to determine the various Echinococcus species. The 12S PCR was most sensitive of all tested.
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Affiliation(s)
- Jeroen H Roelfsema
- National Institute of Public Health and the Environment, Centre for Infectious Disease Control, Netherlands.
| | - Nahid Nozari
- National Institute of Public Health and the Environment, Centre for Infectious Disease Control, Netherlands.
| | - Elena Pinelli
- National Institute of Public Health and the Environment, Centre for Infectious Disease Control, Netherlands.
| | - Laetitia M Kortbeek
- National Institute of Public Health and the Environment, Centre for Infectious Disease Control, Netherlands.
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50
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McGrew AK, O'Hara TM, Stricker CA, Margaret Castellini J, Beckmen KB, Salman MD, Ballweber LR. Ecotoxicoparasitology: Understanding mercury concentrations in gut contents, intestinal helminths and host tissues of Alaskan gray wolves (Canis lupus). Sci Total Environ 2015; 536:866-871. [PMID: 26283618 PMCID: PMC4807146 DOI: 10.1016/j.scitotenv.2015.07.106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 07/22/2015] [Accepted: 07/23/2015] [Indexed: 05/15/2023]
Abstract
Some gastrointestinal helminths acquire nutrients from the lumen contents in which they live; thus, they may be exposed to non-essential elements, such as mercury (Hg), during feeding. The objectives of this study were: 1) determine the total mercury concentrations ([THg]) in Gray wolves (Canis lupus) and their parasites, and 2) use stable isotopes to evaluate the trophic relationships within the host. [THg] and stable isotopes (C and N) were determined for helminths, host tissues, and lumen contents from 88 wolves. Sixty-three wolves contained grossly visible helminths (71.5%). The prevalence of taeniids and ascarids was 63.6% (56/88) and 20.5% (18/88), respectively. Nine of these 63 wolves contained both taeniids and ascarids (14.3%). All ascarids were determined to be Toxascaris leonina. Taenia species present included T. krabbei and T. hydatigena. Within the GI tract, [THg] in the lumen contents of the proximal small intestine were significantly lower than in the distal small intestine. There was a significant positive association between hepatic and taeniid [THg]. Bioaccumulation factors (BAF) ranged from <1 to 22.9 in taeniids, and 1.1 to 12.3 in T. leonina. Taeniid and ascarid BAF were significantly higher than 1, suggesting that both groups are capable of THg accumulation in their wolf host. δ13C in taeniids was significantly lower than in host liver and skeletal muscle. [THg] in helminths and host tissues, in conjunction with stable isotope (C and N) values, provides insight into food-web dynamics of the host GI tract, and aids in elucidating ecotoxicoparasitologic relationships. Variation of [THg] throughout the GI tract, and between parasitic groups, underscores the need to further evaluate the effect(s) of feeding niche, and the nutritional needs of parasites, as they relate to toxicant exposure and distribution within the host.
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Affiliation(s)
- Ashley K McGrew
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1619, USA
| | - Todd M O'Hara
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1619, USA; Wildlife Toxicology Laboratory, Department of Veterinary Medicine, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | - Craig A Stricker
- U. S. Geological Survey, Fort Collins Science Center, Denver, CO 80225, USA
| | - J Margaret Castellini
- Wildlife Toxicology Laboratory, Department of Veterinary Medicine, University of Alaska Fairbanks, Fairbanks, AK 99775, USA
| | | | - Mo D Salman
- Animal Population Health Institute, Department of Clinical Sciences, Colorado State University, Fort Collins, CO 80523-1644, USA
| | - Lora R Ballweber
- Department of Microbiology, Immunology, and Pathology, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1619, USA
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