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Dias-Correia TP, Neves LBD, Bittencourt-Oliveira F, Giglio GCB, Pereira TC, Almeida FBD, Rodrigues-Silva R. Diversity of helminths with zoonotic potential and molecular characterization of Toxocara canis infecting domestic dogs from locations of Amazon and Atlantic Forest Brazilian biomes. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA = BRAZILIAN JOURNAL OF VETERINARY PARASITOLOGY : ORGAO OFICIAL DO COLEGIO BRASILEIRO DE PARASITOLOGIA VETERINARIA 2023; 32:e012723. [PMID: 38055439 DOI: 10.1590/s1984-29612023078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 10/27/2023] [Indexed: 12/08/2023]
Abstract
The coproparasitological examination of dogs (n=278) from two Brazilian biomes (Amazon [AZ] and Atlantic Forest [AF]) by centrifugal flotation demonstrated positivity values of 54.2% (AF) and 48.5% (AZ). The most prevalent parasites in AF were hookworms (81.0% - 47/58), Toxocara sp. (17.3% - 10/58) and Trichuris vulpis (12.1% - 7/58); while in AZ they were hookworms (86.7% - 72/83), Toxocara sp. (18.1% - 15/83), Dipylidium caninum (13.3% - 11/83) and T. vulpis (10.8% - 9/83). PCR was performed using the partial mitochondrial genes cytochrome c oxidase subunit 1 (pcox1) and NADH dehydrogenase 1 (pnad1) in 25 fecal samples positive for Toxocara sp. eggs and found one sample positive for pcox1 and six positives for pnad1. The sequencing of these samples was unsuccessful due to the difficulties inherent in copro-PCR+sequencing. The sequencing of 14 samples of T. canis adult helminths retrieved 11 sequences of 414 bp for pcox1 and nine sequences of 358 bp for pnad1. The phylogenetic trees of these sequences confirmed the species T. canis. Intraspecific genetic variation was only observed for pnad1. This is the second study involving molecular analysis of T. canis in dogs from Brazil and adds new information through the use of pnad1.
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Affiliation(s)
- Tuan Pedro Dias-Correia
- Laboratório de Referência Nacional em Hidatidose - LRNH, Laboratório de Parasitologia Integrativa e Paleoparasitologia - LPIP, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Leandro Batista das Neves
- Laboratório de Referência Nacional em Hidatidose - LRNH, Laboratório de Parasitologia Integrativa e Paleoparasitologia - LPIP, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Fernanda Bittencourt-Oliveira
- Laboratório de Referência Nacional em Hidatidose - LRNH, Laboratório de Parasitologia Integrativa e Paleoparasitologia - LPIP, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Gabriella Cristina Balzana Giglio
- Laboratório de Referência Nacional em Hidatidose - LRNH, Laboratório de Parasitologia Integrativa e Paleoparasitologia - LPIP, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Thiago Cordeiro Pereira
- Laboratório de Referência Nacional em Hidatidose - LRNH, Laboratório de Parasitologia Integrativa e Paleoparasitologia - LPIP, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Fernanda Barbosa de Almeida
- Laboratório de Referência Nacional em Hidatidose - LRNH, Laboratório de Parasitologia Integrativa e Paleoparasitologia - LPIP, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
| | - Rosângela Rodrigues-Silva
- Laboratório de Referência Nacional em Hidatidose - LRNH, Laboratório de Parasitologia Integrativa e Paleoparasitologia - LPIP, Instituto Oswaldo Cruz - IOC, Fundação Oswaldo Cruz - Fiocruz, Rio de Janeiro, RJ, Brasil
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Alvi MA, Ali RMA, Khan S, Saqib M, Qamar W, Li L, Fu BQ, Yan HB, Jia WZ. Past and Present of Diagnosis of Echinococcosis: A Review (1999-2021). Acta Trop 2023; 243:106925. [PMID: 37080264 DOI: 10.1016/j.actatropica.2023.106925] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/17/2023] [Accepted: 04/08/2023] [Indexed: 04/22/2023]
Abstract
The larval forms of taeniid cestodes belonging to the genus Echinococcus are the source of the zoonotic infection known as echinococcosis. Alveolar and cystic echinococcosis are caused by Echinococcus multilocularis and Echinococcus granulosus (s. s) respectively. It is endemic in several regions of the world. In this systematic review, we describe diagnosis, and the species (human, canids, livestock, and small rodents) affected by cystic (CE) and alveolar echinococcosis (AE). From 1999 to 2021, we searched the online directory through PubMed, SCOPUS, Web of Science, and google scholar. Among the 37,700 records found in the online databases, 187 publications met our eligibility requirements. The majority of investigations employed a range of diagnostic methods, such as ELISA, imaging, copro-PCR, necropsy or arecoline hydrobromide purgation, morphological cestode confirmation, and fecal sieving/flotation to detect and confirm Echinococcus infection. ELISA was the most commonly used method followed by PCR, and imaging. The research team retrieved data describing the incidence or assessment of the diagnostic test for E. multilocularis in humans (N = 99), canids (N = 63), small ruminants (N = 13), large ruminants (N= 3), camel (N= 2), pigs (N=2) and small mammals (N= 5). This study was conducted to explore the diagnostic tools applied to detect echinococcosis in humans as well as animals in prevalent countries, and to report the characteristic of new diagnostic tests for disease surveillance. This systematic review revealed that ELISA (alone or in combination) was the most common method used for disease diagnosis and diagnostic efficacy and prevalence rate increased when recombinant antigens were used. It is highly recommended to use combination protcols such as serological with molecular and imaging technique to diagnose disease. Our study identified scarcity of data of reporting echinococcosis in humans/ animals in low-income or developing countries particularly central Asian countries. Study reports in small rodents indicate their role in disease dissemination but real situation in these host is not refected due to limited number of studies. Even though echinococcosis affects both public health and the domestic animal sector, therefore, it is important to devise new and strengthe implementation of the existing monitoring, judging, and control measures in this estimate.
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Affiliation(s)
- Mughees Aizaz Alvi
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, National Para-reference Laboratory for Animal Echinococcosis, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Department of Clinical Medicine and Surgery, University of Agriculture, Faisalabad, Pakistan
| | - Rana Muhammad Athar Ali
- Department of Clinical Medicine and Surgery, University of Agriculture, Faisalabad, Pakistan
| | - Sadiq Khan
- Department of Clinical Medicine and Surgery, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Saqib
- Department of Clinical Medicine and Surgery, University of Agriculture, Faisalabad, Pakistan
| | - Warda Qamar
- Department of Parasitology, University of Agriculture, Faisalabad, Pakistan
| | - Li Li
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, National Para-reference Laboratory for Animal Echinococcosis, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Bao-Quan Fu
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, National Para-reference Laboratory for Animal Echinococcosis, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Hong-Bin Yan
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, National Para-reference Laboratory for Animal Echinococcosis, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China.
| | - Wan-Zhong Jia
- State Key Laboratory of Veterinary Etiological Biology, College of Veterinary Medicine, Lanzhou University, National Para-reference Laboratory for Animal Echinococcosis, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, China.
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Yasur-Landau D, Genad O, Salant H, Dvir E, Mazuz ML, Baneth G. Comparison of multiplex copro PCR with coproscopy followed by PCR on recovered eggs for the detection of Echinococcus granulosus and Taenia spp. infection in dogs. Vet Parasitol 2023; 315:109885. [PMID: 36696840 DOI: 10.1016/j.vetpar.2023.109885] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 01/21/2023]
Abstract
Echinococcosis and taeniasis are important helminth diseases that carry considerable impact on human and animal health. Domestic dogs and other canids are definitive hosts for several parasites of this group, including Echinococcus granulosus, Taenia multiceps, T. ovis, T. hydatigena and E. multilocularis. Detection of infection in dog populations is imperative for estimating the risk to susceptible humans and animals, and for its mitigation through prevention measures in dogs, other animals and humans. To date, identification of taeniid eggs, antigens or DNA in fecal samples are the most practical diagnostic modalities available for canine definitive hosts. Although widely used for this purpose, there is limited information comparing copro PCR and combined coproscopy-PCR protocols for the detection of taeniids. In the current study, a widely used multiplex PCR was performed on a large number of dog fecal samples using DNA extracted directly from feces. The samples were also tested by fecal flotation and coproscopy, eggs were isolated from microscopically-positive samples and extracted DNA was tested using the same multiplex PCR. The total number of taeniid positive samples detected using both methods was 46/317 (14.5%), including 10/317 (3.2%) E. granulosus positive samples. Both copro PCR and coproscopy have identified an equal number of samples as taeniid positive (n = 32). However, for the purpose of identification to species level, the copro PCR was significantly more sensitive than coproscopy followed by PCR on isolated eggs (sensitivity 0.7 vs. 0.41, p = 0.012), with 32/317 (10.1%) and 19/317 (6%) positive samples identified, respectively. The difference in identification of E. granulosus was highly apparent, as the majority of the E. granulosus positive samples (8/10) were detected by the copro PCR only. Coproscopy and egg PCR have identified 5/317 (1.6%) positive samples not detected by the copro PCR, including only a single sample (0.3%) positive for E. granulosus. Adding these positive samples to those identified by the copro PCR did not significantly improve the overall sensitivity (p = 0.074). Therefore, using both copro PCR and coproscopy in parallel may not be advantageous for taeniid detection and identification, at least until the egg PCR is further optimized and performs better. These results should be weighed against the different advantages that coproscopy based approach may offer.
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Affiliation(s)
- Daniel Yasur-Landau
- Division of Parasitology, Kimron Veterinary Institute, P.O.B. 12, Bet Dagan 50250, Israel.
| | - Or Genad
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel.
| | - Harold Salant
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel.
| | - Eran Dvir
- Department of Life Science, Tel-Hai College, Upper Galilee, 1220800, Israel.
| | - Monica L Mazuz
- Division of Parasitology, Kimron Veterinary Institute, P.O.B. 12, Bet Dagan 50250, Israel.
| | - Gad Baneth
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot, Israel.
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Kida I, Kouguchi H, Irie T, Yagi K, Nakao R, Nonaka N. Sensitivity comparison between Mini-FLOTAC and conventional techniques for the detection of Echinococcus multilocularis eggs. Parasitol Int 2021; 87:102522. [PMID: 34863981 DOI: 10.1016/j.parint.2021.102522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/14/2021] [Accepted: 11/26/2021] [Indexed: 11/17/2022]
Abstract
Canines serve as the definitive host of Echinococcus multilocularis. This study evaluated the sensitivity of the Mini-FLOTAC technique (MF) for the detection of E. multilocularis eggs in definitive hosts. First, we investigated the effects of heat inactivation and preservative conditions on the detection rate of eggs obtained from experimentally infected dogs. The sensitivity of MF was compared with that of eight other techniques: the centrifugal flotation with sucrose or zinc sulfate, MGL, AMS III, and a combination of MF and flotation/sedimentation techniques. Finally, we compared the sensitivity of MF and the centrifugal flotation with sucrose for the feces of E. multilocularis-infected foxes. The detection rate reached a plateau level with a specific gravity (s.g.) 1.22 for fresh eggs, but the highest rates were obtained with s.g. greater than 1.32 for heat-inactivated eggs. There was no significant difference in the detection rate among the preservative conditions. MF showed significantly higher EPG than the other techniques. Moreover, it showed higher diagnostic sensitivity for the fox feces than the centrifugal flotation technique. These results suggest that heat inactivation may alter s.g. of E. multilocularis eggs and that MF with zinc sulfate (s.g. = 1.32) would be effective for detecting heat-inactivated E. multilocularis eggs.
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Affiliation(s)
- Izumi Kida
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 8, Sapporo, Hokkaido 060-0818, Japan
| | - Hirokazu Kouguchi
- Department of Infectious Diseases, Hokkaido Institute of Public Health, Kita 19, Nishi 12, Sapporo, Hokkaido 060-0819, Japan
| | - Takao Irie
- Department of Infectious Diseases, Division of Parasitology, Faculty of Medicine, University of Miyazaki, 5200 Kihara, Kiyotake, Miyazaki 889-1692, Japan
| | - Kinpei Yagi
- Department of Infectious Diseases, Hokkaido Institute of Public Health, Kita 19, Nishi 12, Sapporo, Hokkaido 060-0819, Japan
| | - Ryo Nakao
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 8, Sapporo, Hokkaido 060-0818, Japan
| | - Nariaki Nonaka
- Laboratory of Parasitology, Faculty of Veterinary Medicine, Hokkaido University, Kita 18, Nishi 8, Sapporo, Hokkaido 060-0818, Japan.
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Antolová D, Jarošová J, Víchová B, Avdičová M, Rosoľanka R, Ondriska F, Boldiš V, Šimeková K. Human Taeniases in Slovakia (2010-2019): Genetic Analysis of Taenia saginata Isolates. Foodborne Pathog Dis 2020; 17:735-738. [PMID: 32552077 DOI: 10.1089/fpd.2020.2807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Taenia saginata and Taenia solium, known as beef and pork tapeworm, are foodborne pathogens of global importance having a substantial impact on human health and economy. The study aimed to summarize the occurrence of human Taenia spp. infection in past 10 years in Slovakia based on reports of clinicians and diagnostic laboratories to Public Health Authority of the Slovak Republic. Altogether, 19 human cases were reported in Slovakia in 2010-2019, with the incidence of infection ranging from 0.00 to 0.12/100,000 inhabitants per year. In two patients T. saginata infection was confirmed molecularly. Nucleotide sequences of the analyzed nad1 gene fragments derived from both patients were identical and in a phylogenetic tree clustered together with T. saginata Tsa isolate (AM503345), as well as with a homologous sequence of the completely sequenced mitochondrial genome of T. saginata. Similarly, cox1 nucleotide sequences derived from one of the patients and isolates from Asia and/or Europe were identical. A cluster for cox1 partial gene sequence was placed separately from closely related Taenia asiatica and/or T. solium isolates in the phylogenetic tree.
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Affiliation(s)
- Daniela Antolová
- Institute of Parasitology of Slovak Academy of Sciences, Košice, Slovakia
| | - Júlia Jarošová
- Institute of Parasitology of Slovak Academy of Sciences, Košice, Slovakia.,University of Veterinary Medicine and Pharmacy in Košice, Košice, Slovakia
| | - Bronislava Víchová
- Institute of Parasitology of Slovak Academy of Sciences, Košice, Slovakia
| | - Mária Avdičová
- Regional Authority of Public Health Banská Bystrica, Banská Bystrica, Slovakia
| | - Róbert Rosoľanka
- Clinic of Infectology and Travel Medicine, Comenius University Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Martin, Slovakia
| | - František Ondriska
- Department of Parasitology, Medirex (Ltd.), Bratislava, Slovakia.,Faculty of Health Sciences and Social Work Trnava, University Trnava, Trnava, Slovakia
| | - Vojtech Boldiš
- Department of Parasitology, Medirex (Ltd.), Bratislava, Slovakia
| | - Katarína Šimeková
- Clinic of Infectology and Travel Medicine, Comenius University Bratislava, Jessenius Faculty of Medicine and University Hospital in Martin, Martin, Slovakia
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Detection and Identification of Toxocara Canis in Infected Dogs Using PCR. Helminthologia 2019; 56:118-123. [PMID: 31662682 PMCID: PMC6799566 DOI: 10.2478/helm-2019-0008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 12/18/2018] [Indexed: 11/25/2022] Open
Abstract
Faecal samples were collected from 224 dogs (47 villages) in Ankara. Toxocara spp. eggs were diagnosed in faeces using centrifugal flotation and sedimentation methods. A total of 21 dogs (9.38 %) were positive for Toxocara spp. eggs. In this study, we used the PCR technique that, in combination with DNA sequencing, allows the detection and identification of T.canis eggs in faeces of infected dogs. For this purpose, the ATPase subunit-6 gene (mtDNA) was selected as a target for the amplification T. canis. The primers were used to amplify 217 bp region. Amongst 21 coproscopically detected Toxocara isolates from dogs, 5 (23.8 %) samples were PCR-positive for T. canis, and the remaining 16 samples were PCR-negative. Results indicate that PCR can detect Toxocara canis DNA in faeces of infected dogs, but efficacy was low when compare to sedimentation/flotation. PCR is additional test for diagnosing of this infection. But, the difficulties of identification based on PCR in faecal examinations need to be investigated further.
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Moreno Mañas E, Gonzálvez Juan M, Ruiz de Ybáñez Carnero MDR, Gilbert T, Ortiz J, Espeso G, Benzal J, Ibáñez B, Valera Hernández F. Survey of husbandry practices for bovidae in zoos: the importance of parasite management for reintroduction programmes. Vet Rec 2019; 184:282. [DOI: 10.1136/vr.104985] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 12/26/2018] [Accepted: 01/06/2019] [Indexed: 11/04/2022]
Affiliation(s)
- Eulalia Moreno Mañas
- Departamento de Ecología Funcional y EvolutivaEstación Experimental de Zonas Áridas, Consejo Superior de Investigaciones CientíficasAlmeriaSpain
| | - Moisés Gonzálvez Juan
- Departamento de Sanidad Animal, Facultad de VeterinariaUniversidad de MurciaMurciaSpain
| | | | | | - Juana Ortiz
- Departamento de Sanidad Animal, Facultad de VeterinariaUniversidad de MurciaMurciaSpain
| | - Gerardo Espeso
- Departamento de Ecología Funcional y EvolutivaEstación Experimental de Zonas Áridas, Consejo Superior de Investigaciones CientíficasAlmeriaSpain
| | - Jesús Benzal
- Departamento de Ecología Funcional y EvolutivaEstación Experimental de Zonas Áridas, Consejo Superior de Investigaciones CientíficasAlmeriaSpain
| | - Belén Ibáñez
- Departamento de Ecología Funcional y EvolutivaEstación Experimental de Zonas Áridas, Consejo Superior de Investigaciones CientíficasAlmeriaSpain
| | - Francisco Valera Hernández
- Departamento de Ecología Funcional y EvolutivaEstación Experimental de Zonas Áridas, Consejo Superior de Investigaciones CientíficasAlmeriaSpain
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Maurelli MP, Bosco A, Pepe P, Ianniello D, Amadesi A, Cringoli G, Rinaldi L. Innovative tools for the diagnosis of Echinococcus granulosus in definitive hosts. Parasitol Res 2018; 117:2607-2612. [PMID: 29858944 DOI: 10.1007/s00436-018-5952-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 05/25/2018] [Indexed: 01/21/2023]
Abstract
The aim of this study was to develop and validate an innovative protocol for the diagnosis of Echinococcus granulosus and other Taeniidae in dogs. For this purpose, three experiments were performed, using faecal samples from naturally infected dogs. Firstly, the FLOTAC technique was calibrated with five flotation solutions: saturated sodium chloride (specific gravity, s.g. = 1.20), zinc sulphate (s.g. = 1.35), zinc chloride (s.g. = 1.45), Breza (s.g. = 1.30) and modified Breza (s.g. = 1.40). Then, FLOTAC was compared with four techniques of flotation in centrifuge using: zinc sulphate (s.g. = 1.20), Breza (s.g. = 1.30), modified Breza (s.g. = 1.40), and zinc chloride (s.g. = 1.45). Finally, four different protocols of DNA extraction were compared for Taeniidae identification: QIAamp Tissue Kit and QIAamp Stool from eggs; QIAamp Stool and Wizard Magnetic Purification System for Food from faeces. FLOTAC with zinc sulphate was the most efficient method to detect Taeniidae eggs, showing highest mean of eggs per gram (EPG) of faeces. The QIAamp Stool, using eggs concentrated by FLOTAC, was the best method for DNA extraction. The combination of these protocols provided the highest number of positive samples with PCR, i.e., 47/50 (94.0%). The three negative samples showed a low faecal egg count (2 EPG) below the detection limit (4 EPG) of the protocol. From sequencing of the 47 positive samples: 6 samples were identified as E. granulosus sensu stricto (s.s.), 28 as Taenia hydatigena and 6 as T. pisiformis. A co-infection between different genera of Taeniidae was found in 7 samples.
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Affiliation(s)
- Maria Paola Maurelli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR Campania Region, Naples, Italy.
| | - Antonio Bosco
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR Campania Region, Naples, Italy
| | - Paola Pepe
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR Campania Region, Naples, Italy
| | - Davide Ianniello
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR Campania Region, Naples, Italy
| | - Alessandra Amadesi
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR Campania Region, Naples, Italy
| | - Giuseppe Cringoli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR Campania Region, Naples, Italy
| | - Laura Rinaldi
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR Campania Region, Naples, Italy
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Ajibola O, Gulumbe BH, Eze AA, Obishakin E. Tools for Detection of Schistosomiasis in Resource Limited Settings. Med Sci (Basel) 2018; 6:medsci6020039. [PMID: 29789498 PMCID: PMC6024580 DOI: 10.3390/medsci6020039] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 05/15/2018] [Accepted: 05/16/2018] [Indexed: 12/20/2022] Open
Abstract
Schistosomiasis is a debilitating disease affecting over 200 million people, with the highest burden of morbidity and mortality in African countries. Despite its huge impact on the health and socio-economic burden of the society, it remains a neglected tropical disease, with limited attention from governments and stakeholders in healthcare. One of the critical areas that is hugely under-developed is the development of accurate diagnostics for both intestinal and urogenital schistosomiasis. Diagnosis of schistosomiasis is important for the detection and treatment of disease in endemic and non-endemic settings. A conclusive detection method is also an indispensable part of treatment, both in the clinic and during mass drug administration (MDA), for the monitoring efficacy of treatment. Here, we review the available diagnostic methods and discuss the challenges encountered in diagnosis in resource limited settings. We also present the available diagnostics and cost implications for deployment in resource limited settings. Lastly, we emphasize the need for more funding directed towards the development of affordable diagnostic tools that is affordable for endemic countries as we work towards the elimination of the disease.
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Affiliation(s)
- Olumide Ajibola
- Department of Microbiology, Federal University Birnin Kebbi, P.M.B. 1157 Kalgo Road, Birnin Kebbi 860222, Kebbi State, Nigeria.
| | - Bashar Haruna Gulumbe
- Department of Microbiology, Federal University Birnin Kebbi, P.M.B. 1157 Kalgo Road, Birnin Kebbi 860222, Kebbi State, Nigeria.
| | - Anthonius Anayochukwu Eze
- Department of Medical Biochemistry, University of Nigeria, Enugu Campus, Enugu 400241, Enugu State, Nigeria.
| | - Emmanuel Obishakin
- Biotechnology Division, National Veterinary Research Institute, P.M.B. 001, Vom, Jos, 930281, Plateau State, Nigeria.
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Gillespie S, Bradbury RS. A Survey of Intestinal Parasites of Domestic Dogs in Central Queensland. Trop Med Infect Dis 2017; 2:E60. [PMID: 30270917 PMCID: PMC6082058 DOI: 10.3390/tropicalmed2040060] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 11/13/2017] [Accepted: 11/17/2017] [Indexed: 11/18/2022] Open
Abstract
Australia has a very high rate of dog ownership, which in some circumstances may lead to exposure to zoonotic parasitic diseases from those companion animals. Domestic dog faecal samples (n = 300) were collected from public spaces and private property in the greater Rockhampton (Central Queensland) region and tested for intestinal helminths and protozoa by direct microscopy, two flotation methods and a modified acid-fast stain for cryptosporidia. Intestinal parasites detected included hookworms (25%), Cystoisospora ohioensis complex (9%), Blastocystis hominis (3%), Giardia duodenalis (3%), Spirometra erinacei (1%) and Toxocara canis (1%), Sarcocystis spp. (2%), Cryptosporidium spp. (2%) and Cystoisospora canis (1%). One infection each with Trichuris vulpis, Dipylidium caninum and a protozoa belonging to the Entamoeba histolytica complex were identified. Sheather's sucrose centrifugal flotation was more sensitive than saturated salt passive flotation, but no single test detected all cases of parasitic infection identified. The test methodologies employed are poor at recovering larva of Strongyloides stercoralis, Aleurostrongylus abstrussis and eggs of cestodes such as Echinococcus granulosis, so the potential presence of these parasites in Central Queensland domestic dogs cannot be excluded by this survey alone.
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Affiliation(s)
- Simone Gillespie
- School of Health, Medical and Applied Sciences, Central Queensland University, North Rockhampton, QSD 4702, Australia.
| | - Richard S Bradbury
- School of Health, Medical and Applied Sciences, Central Queensland University, North Rockhampton, QSD 4702, Australia.
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Coprodiagnosis of Echinococcus granulosus infection in dogs from Ankara, Turkey. Vet Parasitol 2017; 242:44-46. [PMID: 28606323 DOI: 10.1016/j.vetpar.2017.05.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 04/13/2017] [Accepted: 05/19/2017] [Indexed: 11/22/2022]
Abstract
The present study were undertaken to compare two isolation techniques (centrifugal flotation and sedimentation) for recovering taeniid eggs from faecal samples, to identify E. granulosus DNA from taeniid eggs by PCR, and to determine the prevalence of E. granulosus in dogs in villages. Faecal samples were collected from 100 dogs in Ankara province. Taenia spp. eggs were found in 27% of dogs faeces. Echinococcus granulosus-specific PCR was obtained in 14 (51.85%) of the taeniid eggs-positive samples. As well as finding Taenia eggs in dogs' faeces, we also found eggs of some helminthic parasites; such as Dipylidium caninum, Toxocara canis, Toxascaris leonina, Trichuris sp., Capillaria sp., Filaroides sp., Dioctophyme renale, Linguatula serrata, hookworm, Dicrocoelium sp., Fasciola sp. and Ascaridia galli. Significantly, more dogs excreting taeniid eggs were diagnosed with the sedimentation method (n=27) as compared to the flotation method (n=10).
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Széll Z, Tolnai Z, Sréter T. Environmental determinants of the spatial distribution of Mesocestoides spp. and sensitivity of flotation method for the diagnosis of mesocestoidosis. Vet Parasitol 2015; 212:427-30. [PMID: 26150263 DOI: 10.1016/j.vetpar.2015.06.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 06/18/2015] [Accepted: 06/22/2015] [Indexed: 12/01/2022]
Abstract
Mesocestoides spp. are zoonotic cestodes of wild and domesticated carnivores. Although the adult stages are relatively harmless intestinal parasites, the metacestode stages (tetrathyridia) can be responsible for life-threatening peritonitis and pleuritis in several species including dogs, cats, non-human primates and probably man. The aim of the present study was to reveal the spatial distribution pattern of Mesocestoides spp. in the most important final hosts, red foxes (Vulpes vulpes), to analyse the relationship of these patterns with landscape and climate by geographical information systems and to evaluate faecal flotation method for the detection of infection in the final host. Fox carcasses, representing 0.5% of the total fox population were randomly selected out of all the foxes of Hungary. The intestinal tract was examined by sedimentation and counting technique. The sensitivity of the flotation method was evaluated by the testing of the faecal samples of 180 foxes infected with Mesocestoides spp. The prevalence of infection was high in foxes (45.8%; 95% CI=41.0-50.6%), and the parasite was detected in all areas of Hungary. The high prevalence of the parasite in foxes suggests that the infection might also be common in outdoor dogs and cats. Mesocestoides infection could not be detected in any of the foxes by flotation method indicating that the sensitivity of the method is less than 0.6%. Therefore, almost all canine and feline infections remain undetected in the veterinary practice. Based on the statistical analysis, the altitude was the only determinant of the spatial distribution of Mesocestoides spp. indicating that infections in carnivores including dogs and cats can be expected mainly in midland regions (150-750 m above sea level). It might be attributed to the altitude-dependent species richness and abundance of the intermediate and final hosts of the parasite.
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Affiliation(s)
- Z Széll
- Laboratory of Parasitology, Fish and Bee Diseases, Veterinary Diagnostic Directorate, National Food Chain Safety Office, Tábornok u. 2, H-1143 Budapest, Hungary
| | - Z Tolnai
- Laboratory of Parasitology, Fish and Bee Diseases, Veterinary Diagnostic Directorate, National Food Chain Safety Office, Tábornok u. 2, H-1143 Budapest, Hungary
| | - T Sréter
- Laboratory of Parasitology, Fish and Bee Diseases, Veterinary Diagnostic Directorate, National Food Chain Safety Office, Tábornok u. 2, H-1143 Budapest, Hungary.
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