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Aboelsoued D, Toaleb NI, Ibrahim S, Ibrahim S. In vitro and ex vivo protoscolicidal effect of poly(amidoamine) nanoemulsion against Echinococcus granulosus. Sci Rep 2024; 14:11957. [PMID: 38796499 PMCID: PMC11127951 DOI: 10.1038/s41598-024-62015-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/13/2024] [Indexed: 05/28/2024] Open
Abstract
Hydatidosis causes a serious health hazard to humans and animals leading to significant economic and veterinary and public health concern worldwide. The present study aimed to evaluate the in vitro and ex vivo protoscolicidal effects of synthesized poly(amidoamine), PAMAM, nanoemulsion. In this study, PAMAM was characterized through dynamic light scattering technique to investigate the particle size and zeta potential of nanoemulsified polymer. For the in vitro and ex vivo assays, we used eosin dye exclusion test and scanning electron microscope (SEM) to evaluate the effects of the prepared and characterized PAMAM nanoemulsion against protoscoleces from Echinococcus granulosus sensu lato G6 (GenBank: OQ443068.1) isolated from livers of naturally infected camels. Various concentrations (0.5, 1, 1.5 and 2 mg/mL) of PAMAM nanoemulsion at different exposure times (5, 10, 20 and 30 min) were tested against protoscolices. Our findings showed that PAMAM nanoemulsion had considerable concentration- and time-dependent protoscolicidal effect at both in vitro and ex vivo experiments. Regarding in vitro assay, PAMAM nanoemulsion had a potent protoscolicidal effect when compared with the control group with a highest protoscolicidal activity observed at the concentration of 2 mg/mL at all exposure times, such that 100% of protoscolices were killed after 20 min of exposure. Also, the mortality of protoscolices was 100% after 30 min of exposure to 1 and 1.5 mg/mL of PAMAM nanoemulsion, in vitro. Concerning ex vivo assay PAMAM nanoemulsion recorded the highest mortality rates at the concentration of 2 mg/mL (55, 99.4 and 100% at 10, 20, 30 min, respectively). Ultrastructure examination of examined protoscolices after 20 min of exposure to PAMAM nanoemulsion showed a complete loss of rostellar hooks, disruption of suckers with disorganization of hooks with partial or complete loss of them, and damage of protoscolices tegument with loss of their integrity in the form of holes and contraction of the soma region were observed in 1.5 and 2 mg/mL of PAMAM, in vitro and ex vivo, showing more damage in the in vitro conditions. It can be concluded that PAMAM nanoemulsion is a promising protoscolicidal agent offering a high protoscolicidal effect at a short exposure time. Further in vivo studies and preclinical animal trials are required to evaluate its efficacy and clinical applications against hydatid cysts.
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Affiliation(s)
- Dina Aboelsoued
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, Dokki, Giza, Egypt.
| | - Nagwa I Toaleb
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, Dokki, Giza, Egypt
| | - Sally Ibrahim
- Department of Animal Reproduction and AI, Veterinary Research Institute, National Research Centre, El Buhouth Street, Dokki, Giza, Egypt
| | - Saber Ibrahim
- Packaging Materials Department, National Research Centre, Dokki, Giza, 12622, Egypt
- Nanomaterials Investigation Lab., Central Laboratory Network, National Research Centre, Dokki, Giza, 12622, Egypt
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Zhu Y, Li M, Li Z, Song J, Zhao W. Study on the mechanism of miRNAs on liver injury in the condition of Protoscocephalus alveolarus transhepatic portal vein infection. Immun Inflamm Dis 2024; 12:e1236. [PMID: 38652009 PMCID: PMC11037255 DOI: 10.1002/iid3.1236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 02/29/2024] [Accepted: 03/17/2024] [Indexed: 04/25/2024] Open
Abstract
OBJECTIVE To explore the role of miRNA in liver damage caused by Echinococcus multilocularis infection. METHODS Six female C57BL mice were randomly divided into two groups, the control group and the infection group. Mice in the control group were injected with 100 μL PBS through the hepatic portal vein, and mice in the infection group were infected with E. multilocularis via the hepatic portal vein to establish a mouse model of infection. Small RNA sequencing was performed for detecting the expression of miRNAs in the liver of mice infected with 2000 E. multilocularis after 3 months of infection, screen out miRNAs related to liver damage, and verify by RT-PCR. RESULTS Seventy-one differentially expressed miRNAs were found in the liver in comparison with control, and a total of 36 mouse miRNAs with |FC| >0.585 were screened out, respectively. In addition, Targetscan (V5.0) and miRanda (v3.3a) software were used to predict differential miRNAs target genes and functional enrichment of target genes. Functional annotation showed that "cytokine-cytokine interaction," "positive regulation of cytokine production," "inflammatory response," and "leukocyte activation" were enriched in the liver of E. multilocularis-infected mice. Moreover, the pathways "human cytomegalovirus infection," "cysteine and methionine metabolism," "Notch signaling pathway," and "ferroptosis" were involved in liver disease. Furthermore, four miRNAs (mmu-miR-30e-3p, mmu-miR-203-3p, mmu-miR-125b-5p, and mmu-miR-30c-2-3p) related to liver injury were screened and verified. CONCLUSION This study revealed that the expression profiling of miRNAs in the livers was changed after E. multilocularis infection, and improved our understanding of the transcriptomic landscape of hepatic echinococcosis in mice.
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Affiliation(s)
- Yazhou Zhu
- Department of Pathogen Biology, School of Basic MedicineNingxia Medical UniversityYinchuanChina
- Ningxia Key Laboratory of Prevention and Control of Common Infectious DiseasesYinchuanChina
| | - Ming Li
- General Hospital of Ningxia Medical UniversityYinchuanChina
| | - Zihua Li
- Ningxia Key Laboratory of Prevention and Control of Common Infectious DiseasesYinchuanChina
- Department of Cell Biology and GeneticsNingxia Medical UniversityYinchuanChina
| | - Jiahui Song
- Ningxia Key Laboratory of Prevention and Control of Common Infectious DiseasesYinchuanChina
| | - Wei Zhao
- Department of Pathogen Biology, School of Basic MedicineNingxia Medical UniversityYinchuanChina
- Ningxia Key Laboratory of Prevention and Control of Common Infectious DiseasesYinchuanChina
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Xu S, Dawuti W, Maimaitiaili M, Dou J, Aizezi M, Aimulajiang K, Lü X, Lü G. Rapid and non-invasive detection of cystic echinococcosis in sheep based on serum fluorescence spectrum combined with machine learning algorithms. JOURNAL OF BIOPHOTONICS 2024; 17:e202300357. [PMID: 38263544 DOI: 10.1002/jbio.202300357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/15/2023] [Accepted: 12/14/2023] [Indexed: 01/25/2024]
Abstract
Cystic echinococcosis (CE) is a grievous zoonotic parasitic disease. Currently, the traditional technology of screening CE is laborious and expensive, developing an innovative technology is urgent. In this study, we combined serum fluorescence spectroscopy with machine learning algorithms to develop an innovative screening technique to diagnose CE in sheep. Serum fluorescence spectra of Echinococcus granulosus sensu stricto-infected group (n = 63) and uninfected E. granulosus s.s. group (n = 60) under excitation at 405 nm were recorded. The linear support vector machine (Linear SVM), Quadratic SVM, medium radial basis function (RBF) SVM, K-nearest neighbor (KNN), and principal component analysis-linear discriminant analysis (PCA-LDA) were used to analyze the spectra data. The results showed that Quadratic SVM had the great classification capacity, its sensitivity, specificity, and accuracy were 85.0%, 93.8%, and 88.9%, respectively. In short, serum fluorescence spectroscopy combined with Quadratic SVM algorithm has great potential in the innovative diagnosis of CE in sheep.
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Affiliation(s)
- Shengke Xu
- College of Life Sciences and Technology, Xinjiang University, Urumqi, Xinjiang, China
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Wubulitalifu Dawuti
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing, China
| | - Maierhaba Maimaitiaili
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Jingrui Dou
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Malike Aizezi
- Animal Health Supervision Institute of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, PR China
| | - Kalibixiati Aimulajiang
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Xiaoyi Lü
- College of Software, Xinjiang University, Urumqi, Xinjiang, China
| | - Guodong Lü
- College of Life Sciences and Technology, Xinjiang University, Urumqi, Xinjiang, China
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
- Xinjiang Key Laboratory of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
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Gu H, Hu Y, Guo S, Jin Y, Chen W, Huang C, Hu Z, Li F, Liu J. China's prevention and control experience of echinococcosis: A 19-year retrospective. J Helminthol 2024; 98:e16. [PMID: 38305033 DOI: 10.1017/s0022149x24000014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Echinococcosis poses a significant threat to public health. The Chinese government has implemented prevention and control measures to mitigate the impact of the disease. By analyzing data from the Chinese Center for Disease Control and Prevention and the State Council of the People's Republic of China, we found that implementation of these measures has reduced the infection rate by nearly 50% between 2004 to 2022 (from 0.3975 to 0.1944 per 100,000 person-years). Nonetheless, some regions still bear a significant disease burden, and lack of detailed information limites further evaluation of the effects on both alveolar and cystic echinococcosis. Our analysis supports the continuing implementation of these measures and suggests that enhanced wildlife management, case-based strategies, and surveillance systems will facilitate disease control.
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Affiliation(s)
- H Gu
- Laboratory of Infectious Diseases and Vaccines, West China School of Medicine, West China Hospital of Sichuan University, Chengdu610041, PR China
| | - Y Hu
- Department of Biliary Surgery, West China School of Medicine, West China Hospital of Sichuan University, Chengdu610041, PR China
| | - S Guo
- Laboratory of Infectious Diseases and Vaccines, West China School of Medicine, West China Hospital of Sichuan University, Chengdu610041, PR China
| | - Y Jin
- Department of Biliary Surgery, West China School of Medicine, West China Hospital of Sichuan University, Chengdu610041, PR China
| | - W Chen
- Laboratory of Infectious Diseases and Vaccines, West China School of Medicine, West China Hospital of Sichuan University, Chengdu610041, PR China
| | - C Huang
- Laboratory of Infectious Diseases and Vaccines, West China School of Medicine, West China Hospital of Sichuan University, Chengdu610041, PR China
| | - Z Hu
- Laboratory of Infectious Diseases and Vaccines, West China School of Medicine, West China Hospital of Sichuan University, Chengdu610041, PR China
| | - F Li
- Department of Biliary Surgery, West China School of Medicine, West China Hospital of Sichuan University, Chengdu610041, PR China
| | - J Liu
- Laboratory of Infectious Diseases and Vaccines, West China School of Medicine, West China Hospital of Sichuan University, Chengdu610041, PR China
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Hogea MO, Ciomaga BF, Muntean MM, Muntean AA, Popa MI, Popa GL. Cystic Echinococcosis in the Early 2020s: A Review. Trop Med Infect Dis 2024; 9:36. [PMID: 38393125 PMCID: PMC10891927 DOI: 10.3390/tropicalmed9020036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/14/2024] [Accepted: 01/30/2024] [Indexed: 02/25/2024] Open
Abstract
Cystic echinococcosis (CE) is a zoonosis caused by metacestodes, the larval stage of Echinococcus granulosus. Although the World Health Organization (WHO) has defined CE as a neglected disease, it is the second most important foodborne parasitic disease, and it remains an important public health issue, considering its zonal endemicity and potential morbidity. The control and prevention of CE is a relevant WHO target, especially from a One Health perspective, as the disease affects not only animals and humans but also the food chain. Since not all countries have a CE surveillance strategy or reporting system and specific management guidelines, recent epidemiological data are relatively scarce, and research concerning the specific geographical distribution of the disease is ongoing. To add new information to the subject, we have analyzed and collected data from national guidelines and several medical databases. Out of the 751 research articles that were originally identified, only 52 were included in the investigation after applying specific inclusion and exclusion criteria. Notable international projects that have provided significant contributions and had a positive impact are presented. The available data were correlated with WHO recommendations on the subject, thus showcasing the measures taken and those that are still needed to properly control the disease's spread.
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Affiliation(s)
- Mihai-Octav Hogea
- Department of Microbiology II, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (M.-O.H.); (B.-F.C.); (M.-M.M.); (A.-A.M.); (M.I.P.)
| | - Bogdan-Florin Ciomaga
- Department of Microbiology II, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (M.-O.H.); (B.-F.C.); (M.-M.M.); (A.-A.M.); (M.I.P.)
| | - Mădălina-Maria Muntean
- Department of Microbiology II, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (M.-O.H.); (B.-F.C.); (M.-M.M.); (A.-A.M.); (M.I.P.)
| | - Andrei-Alexandru Muntean
- Department of Microbiology II, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (M.-O.H.); (B.-F.C.); (M.-M.M.); (A.-A.M.); (M.I.P.)
- Department of Microbiology, Cantacuzino National Military Medical Institute for Research and Development, 050096 Bucharest, Romania
| | - Mircea Ioan Popa
- Department of Microbiology II, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania; (M.-O.H.); (B.-F.C.); (M.-M.M.); (A.-A.M.); (M.I.P.)
- Department of Microbiology, Cantacuzino National Military Medical Institute for Research and Development, 050096 Bucharest, Romania
| | - Gabriela Loredana Popa
- Parasitic Disease Department, Colentina Clinical Hospital, 020125 Bucharest, Romania
- Department of Microbiology, Faculty of Dentistry, Carol Davila University of Medicine and Pharmacy, 020021 Bucharest, Romania
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Celik F, Tektemur A, Simsek S. miRNA based biomarkers for the early diagnosis of Echinococcus granulosus in experimentally infected dogs. Vet Parasitol 2023; 324:110075. [PMID: 38000178 DOI: 10.1016/j.vetpar.2023.110075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023]
Abstract
Cystic echinococcosis, which is caused by the Echinococcus granulosus. Carnivores, as final hosts, contain adult tapeworms in the small intestine, and a variety of mammals, including humans, harbor the metacestod. This study was designed to investigate the miRNA-based biomarkers for early and accurate diagnosis of E. granulosus in experimentally infected dogs. A liver with an obvious hydatid cyst was obtained from a slaughterhouse and then protoscoleces were collected. Following, viable protoscoleces were administred to three experimental dogs (ED1, ED2 and ED3) and another uninfected control dog (UCD) was kept as control without infection. Stool samples of all groups were collected during 50 days from the beginning of the experimental infection and stored at - 80 °C till work. Total miRNA was isolated from all individual stool samples. The qRT-PCR method was used to determine the differences in the expression levels of E. granulosus specific miRNAs which were egr-let-7-5p, egr-miR-2b-5p, egr-miR-71-5p and egr-miR-125-5p. All miRNAs were found to be expressed from the first day in all infected dogs. In the stool samples of the UCD, the egr-miR-71-5p was detected, while the other miRNAs (egr-let-7-5p, egr-miR-2b-5p, egr-miR-125-5p) were not expressed. The expression of egr-let-7-5p and egr-miR-125-5p was significantly increased in ED1 compared to UCD on all days. In particular, for the first time, the expression levels of egr-let-7-5p and egr-miR-125-5p increased significantly between days 15 and 19. Similarly, the increase in let-7-5p and miR-125-5p expression was statistically significant in ED2. In ED3, egr-let-7-5p, egr-miR2b-5p and egr-miR-125-5p expressions were significantly increased on all days. In particular, egr-let-7-5p expression levels increased significantly for the first time between days 15 and 19. In addition, egr-mir-125-5p expression levels were found to increase at a high level for the first time on day 16. In conclusion, especially egr-let-7-5p and egr-miR-125-5p can be used as early diagnostic biomarkers in dogs infected with E. granulosus.
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Affiliation(s)
- Figen Celik
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, 23119 Elazig, Turkey
| | - Ahmet Tektemur
- Department of Medical Biology, Faculty of Medicine, University of Firat, 23119 Elazig, Turkey
| | - Sami Simsek
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, 23119 Elazig, Turkey.
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Lerdkrai C, Phungphosop N. Multiplex allele-specific polymerase chain reaction-based prevalence study of canine trapped neutrophil syndrome in Thailand. Vet World 2023; 16:2271-2276. [PMID: 38152268 PMCID: PMC10750753 DOI: 10.14202/vetworld.2023.2271-2276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 10/17/2023] [Indexed: 12/29/2023] Open
Abstract
Background and Aim Trapped neutrophil syndrome (TNS) is an autosomal recessive genetic disorder found in Border Collies and is characterized by peripheral neutropenia and myeloid hyperplasia of bone marrow. The underlying cause of TNS is associated with a 4-base pair deletion mutation in the vacuolar protein sorting 13 homolog B (VPS13B) gene. In this study, we proposed and validated a novel multiplex allele specific-polymerase chain reaction (MAS-PCR) technique to assess the prevalence of TNS using VPS13B genotypes of Border Collies and Thai Ridgebacks in Thailand. Materials and Methods We assessed the prevalence of TNS in 100 Border Collies and 30 Thai Ridgebacks using MAS-PCR-based allelic discrimination technique of the VPS13B gene. We then confirmed the VPS13B genotypes by direct DNA sequencing. Results A total of 130 samples were successfully genotyped using MAS-PCR assays. Of the two dog breeds examined, the VPS13B mutation was present in Border Collies, whereas Thai Ridgebacks were unaffected by this mutation. In Border Collies, 96% of dogs tested had an intact VPS13B genotype, whereas the remaining individuals had a heterozygous mutation genotype, with prevalence and mutated VPS13B allele frequencies of 4% and 2%, respectively. Conclusion Using a novel MAS-PCR assay targeting the VPS13B gene, this study demonstrates for the first time that carriers of TNS exist in Border Collies in Thailand. This assay is a reliable and cost-effective tool for diagnosing TNS based on VPS13B genotypes and is suitable for routine clinical practice.
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Affiliation(s)
- Chommanad Lerdkrai
- Department of Physiology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand
| | - Nuch Phungphosop
- Department of Physiology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand
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Toaleb NI, Aboelsoued D, Abdel Megeed KN, Hekal SHA. A Novel Designed Sandwich ELISA for the Detection of Echinococcus granulosus Antigen in Camels for Diagnosis of Cystic Echinococcosis. Trop Med Infect Dis 2023; 8:400. [PMID: 37624338 PMCID: PMC10459475 DOI: 10.3390/tropicalmed8080400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/01/2023] [Accepted: 08/03/2023] [Indexed: 08/26/2023] Open
Abstract
Echinococcus spp. are important cosmopolitan zoonotic parasitic tapeworms that cause a disease called hydatidosis or cystic echinococcosis (CE), which has remarkable economic losses. The objective of our study was to develop a specific IgG polyclonal antigen-based ELISA (Sandwich ELISA; capture ELISA) method for the detection of circulating Echinococcus granulosus (E. granulosus) antigens in camels infected with hydatid cysts before slaughtering and its application in serodiagnosis of CE in animals to assess the positive rate of hydatidosis in camels slaughtered in Giza governorate abattoirs in Egypt. In this study, molecular identification of Echinococcus sp. isolate was performed based on the NADH dehydrogenase subunit 1 (NAD1) gene, revealing the isolate (GenBank: OQ443068.1), which is identical to the G6 E. granulosus sensu lato genotype. The positive rate of hydatid cysts was determined in slaughtered camels' organs (n = 587). The results revealed that hydatid cysts were found in 46.5% (273/587) of the examined camels. Pulmonary echinococcosis was significantly more prevalent in the slaughtered camels (60%, 164/273) than hepatic echinococcosis (39.9%, 109/273), (p = 0.001, Chi Square = 11.081). Cyst fertility rates were higher in hepatic (90.8%, 99/109) than in pulmonary cysts (83.5%, 137/164) and the most viable protoscoleces were recorded from fertile the hepatic cysts (67.85 ± 12.78). In this study, hydatid cyst germinal layer antigen (GlAg) was isolated and used for the immunization of rabbits to raise IgG polyclonal antibodies (anti-Echinococcus GlAb IgG). These IgG polyclonal antibodies were purified by affinity chromatography using a protein A column, then labeled with horseradish peroxidase. Electrophoretic analysis of IgG polyclonal antibodies and crude GlAg was performed in 10% polyacrylamide gels. The SDS-PAGE revealed four bands at molecular weights of 77 kDa, 65 kDa, 55 kDa, and 25 kDa. The Sandwich ELISA was performed to evaluate the sensitivity and specificity and cross-reactivity of the prepared IgG polyclonal antibodies. The circulating hydatid antigen was found in 270 out of the 273 samples with hydatidosis, with a sensitivity of 98.9% (270/273), a specificity of 94.9% (296/312) and a diagnostic efficacy of 96.8%. Regarding the cross reactivity, anti-Echinococcus GlAb IgG showed a low cross-reactivity with Fasciola gigantica infected camel sera (3/8), and Myiasis (Cephalopina titillator larvae; 3/20). No cross-reactivity was recorded with uninfected camel sera (negative sera for E. granulosus), and no cross-reactivity was found with antigens of Eimeria spp., Toxoplasma gondii, Cryptosporidium sp., and Hyalomma dromedarii (ticks' infestation). Then, Sandwich ELISA was conducted again to detect E. granulosus antigen in all the collected camel sera, which resulted in a 48.7% (286/587) positive rate of CE compared to 46.5% (273/587) using a postmortem inspection (PM diagnosis) (p = 0.5, Chi Square = 0.302). In conclusion, the Sandwich ELISA technique introduced in this study appears to be a sufficiently sensitive diagnostic assay for the detection of camels' echinococcosis using anti-Echinococcus GlAb IgG. In addition, it might offer a significant medical and veterinary importance in helping the early detection of hydatidosis, as well as its early treatment.
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Affiliation(s)
- Nagwa I. Toaleb
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, El Buhouth Street, Dokki, Cairo 12622, Egypt; (N.I.T.); (K.N.A.M.)
| | - Dina Aboelsoued
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, El Buhouth Street, Dokki, Cairo 12622, Egypt; (N.I.T.); (K.N.A.M.)
| | - Kadria N. Abdel Megeed
- Department of Parasitology and Animal Diseases, Veterinary Research Institute, National Research Centre, El Buhouth Street, Dokki, Cairo 12622, Egypt; (N.I.T.); (K.N.A.M.)
| | - Sahar Hussein Abdalla Hekal
- Department of Natural Resources, Faculty of African Postgraduate Studies, Cairo University, Giza 12613, Egypt;
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Dawuti W, Dou J, Zheng X, Lü X, Zhao H, Yang L, Lin R, Lü G. Rapid and accurate screening of cystic echinococcosis in sheep based on serum Fourier-transform infrared spectroscopy combined with machine learning algorithms. JOURNAL OF BIOPHOTONICS 2023; 16:e202200320. [PMID: 36707914 DOI: 10.1002/jbio.202200320] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 01/20/2023] [Accepted: 01/25/2023] [Indexed: 05/17/2023]
Abstract
Cystic echinococcosis (CE) in sheep is a serious zoonotic parasitic disease caused by Echinococcus granulosus sensu stricto (s.s.). Presently, the screening technology for CE in sheep is time-consuming and inaccurate, and novel screening technology is urgently needed. In this work, we combined machine-learning algorithms with Fourier transform infrared (FT-IR) spectroscopy of serum to establish a quick and accurate screening approach for CE in sheep. Serum samples from 77 E. granulosus s.s.-infected sheep to 121 healthy control sheep were measured by FT-IR spectrometer. To optimize the classification accuracy of the serum FI-TR method for the E. granulosus s.s.-infected sheep and healthy control sheep, principal component analysis (PCA), linear discriminant analysis, and support vector machine (SVM) algorithms were used to analyze the data. Among all the bands, 1500-1700 cm-1 band has the best classification effect; its diagnostic sensitivity, specificity, and accuracy of PCA-SVM were 100%, 95.74%, and 96.66%, respectively. The study showed that serum FT-IR spectroscopy combined with machine learning algorithms has great potential for rapid and accurate screening methods for the CE in sheep.
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Affiliation(s)
- Wubulitalifu Dawuti
- School of Public Health, Xinjiang Medical University, Urumqi, China
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Jingrui Dou
- School of Public Health, Xinjiang Medical University, Urumqi, China
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xiangxiang Zheng
- School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, China
| | - Xiaoyi Lü
- College of Software, Xinjiang University, Urumqi, China
| | - Hui Zhao
- Department of Clinical Laboratory, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Lingfei Yang
- Department of Abdominal Ultrasound Diagnosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Renyong Lin
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Guodong Lü
- School of Public Health, Xinjiang Medical University, Urumqi, China
- State Key Laboratory of Pathogenesis, Prevention, and Treatment of Central Asian High Incidence Diseases, Clinical Medical Research Institute, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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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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Cai J, Yang K, Chen Q, Zhao Q, Li J, Wang S, Yang L, Liu Y. The impact of echinococcosis interventions on economic outcomes in Qinghai Province of China: Evidence from county-level panel data. Front Vet Sci 2023; 10:1068259. [PMID: 37008365 PMCID: PMC10063884 DOI: 10.3389/fvets.2023.1068259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 02/27/2023] [Indexed: 03/19/2023] Open
Abstract
Introduction Echinococcosis can incur substantial economic losses for the livestock industry by causing organ condemnation, delayed growth, and reduced meat and wool output and quality in sheep and cattle, as well as increased surgery costs, hospital care, and decreased productivity in humans. Yet echinococcosis could be prevented and controlled by interventions, such as dog management and deworming, lamb vaccination, slaughter management, and training and public education. Methods Exploiting temporal and spatial variations in the number of intervention measures implemented in 39 counties in Qinghai province of China in 2015-2020, this study assesses the economic impact of echinococcosis interventions using a dynamic difference-in-differences model. Results The results suggest that echinococcosis interventions brought about substantial economic gains measured by per capita net income of rural residents and per capita gross output of animal husbandry. These economic gains are greater in non-pastoral counties (with a gain in per capita net income of rural residents of 3,308 yuan and a gain per capita gross output of animal husbandry of 1,035 yuan) than in pastoral counties (with a gain in per capita net income of rural residents of 1,372 yuan and a gain per capita gross output of animal husbandry of 913 yuan). They are also greater in counties with echinococcosis infection level-2 (with a human infection rate of 0.1-1% or a dog infection rate of 1-5%) than infection level-1 counties (with a human prevalence rate ≥1% or a dog infection rate ≥5%). Discussion Not only will these economic gains encourage livestock farmers to strengthen their echinococcosis prevention and control practices, but they will also inform public policy on zoonotic disease prevention and control in China and other countries alike.
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Affiliation(s)
- Jinshan Cai
- Veterinary Public Health Department, Qinghai Center for Animal Disease Prevention and Control, Xining, Qinghai, China
- The Research Key Laboratory for Echinococcosis of Qinghai Province, Xining, Qinghai, China
| | - Kefan Yang
- College of Economics and Management, China Agricultural University, Beijing, China
| | - Qihui Chen
- College of Economics and Management, China Agricultural University, Beijing, China
| | - Quanbang Zhao
- Veterinary Public Health Department, Qinghai Center for Animal Disease Prevention and Control, Xining, Qinghai, China
- The Research Key Laboratory for Echinococcosis of Qinghai Province, Xining, Qinghai, China
| | - Jing Li
- Veterinary Public Health Department, Qinghai Center for Animal Disease Prevention and Control, Xining, Qinghai, China
- The Research Key Laboratory for Echinococcosis of Qinghai Province, Xining, Qinghai, China
| | - Sen Wang
- College of Economics and Management, China Agricultural University, Beijing, China
| | - Lin Yang
- China Animal Disease Control Center, Beijing, China
| | - Yumei Liu
- College of Economics and Management, China Agricultural University, Beijing, China
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Toure A, Toure L, Acapovi-Yao GL, Senin CBV, Kone N, Kachani M, Couacy-Hymann E. Diagnostic accuracy of swine echinococcosis cytopathological tests and challenges for a differential diagnosis: slaughterhouse data. Helminthologia 2023; 60:52-62. [PMID: 37305668 PMCID: PMC10251756 DOI: 10.2478/helm-2023-0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 12/12/2022] [Indexed: 06/13/2023] Open
Abstract
Echinococcosis disease shows clinical signs similar to many diseases. Hence we report cases that need to be confirmed using appropriate tests. A confirmatory study has been conducted to assess the accuracy of two cytopathological tests, with the histopathology test as the reference standard. The first cytopathological test evaluates the Ziehl Neelsen staining with an epifluorescence microscope (cytopath 1). The second cytopathological test uses the same staining followed by a transmitted light microscope examination (cytopath 2). Of a total of 2524 inspected pigs, 101 suspected cases of echinococcosis were detected, of which 67 were found positive with the two cytopathological tests and the histopathological one. The specificity of cytopath 1 (100 % [95 % CI 100 - 100]) and cytopath 2 (100 % [95 % CI 100;100]) were similar, as well as their respective positive predictive values: 100 % [95 % CI 100 - 100] vs. 100 % [95 % CI 100 - 100]. The sensitivity of cytopath 1 is 79.66 % [95 % CI 69.39 - 89.93], while cytopath 2 equals 66.10 % [95 % CI 54.02 - 78.18]. The difference in sensitivity of both tests was not significant. Negative predictive values found for cytopath 1, and cytopath 2 were 40 [95 % CI 18.53 - 61.47] and 28.57 [95 % CI 11.84 - 45.3], leading to the Generalized Estimating Equations (GEE) Model estimate for an odds ratio of 1.4 [95 % CI 0.41 - 5.2], p = 0.06. Cytopath 1 and cytopath 2 are equivalent in terms of specificity (100 % [95 % CI 100 - 100] vs. 100 % [95 % CI 100;100]) and positive predictive value (100 % [95 % CI 100 - 100]. Cytopath 1 is more sensitive than cytopath 2 but not significant (79.66 % [ 95 % CI 69.39 - 89.93] vs. 66.10 % [95 % CI 54.02 - 78.18]). However, the negative predictive value of cytopath 1 is better than that of cytopath 2: 40 % [95 % CI 18.53 - 61.47] vs. 28.57 % [95 % CI 11.84 - 45.3].
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Affiliation(s)
- A Toure
- LANADA: Laboratoire Central Vétérinaire de Bingerville. Bp: 206 Bingerville, Côte d'Ivoire; Current affiliation of the first author: Université Nangui Abrogoua / UFR Sciences de la Nature, 02 Bp 801 Abidjan 02, Côte d'Ivoire
| | - L Toure
- Université Felix Houphouët Boigny/ UFR Biosciences, Abidjan, Côte d'Ivoire, 22 Bp 582 Abidjan 22, Abidjan, Côte d'Ivoire
| | - G L Acapovi-Yao
- Université Felix Houphouët Boigny/ UFR Biosciences, Abidjan, Côte d'Ivoire, 22 Bp 582 Abidjan 22, Abidjan, Côte d'Ivoire
| | - C B V Senin
- SIVAC: Société Ivoirienne d'Abattage et de Charcuterie 22 Bp 1147 Abidjan 22, Abidjan, Côte d'Ivoire
| | - N Kone
- Université Felix Houphouët Boigny/ UFR Biosciences, Abidjan, Côte d'Ivoire, 22 Bp 582 Abidjan 22, Abidjan, Côte d'Ivoire
| | - M Kachani
- Current address: Western University, United States of America
| | - E Couacy-Hymann
- LANADA: Laboratoire Central Vétérinaire de Bingerville. Bp: 206 Bingerville, Côte d'Ivoire; Current affiliation of the first author: Université Nangui Abrogoua / UFR Sciences de la Nature, 02 Bp 801 Abidjan 02, Côte d'Ivoire
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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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Mutwiri T, Muigai AWT, Magambo J, Mulinge E, Gitau L, Muinde P, Bettridge JM, Rogan M, Fèvre EM, Falzon LC. The potential role of roaming dogs in establishing a geographically novel life cycle of taeniids (Echinococcus spp. and Taenia spp.) in a non-endemic area. Vet Parasitol Reg Stud Reports 2023; 38:100829. [PMID: 36725161 DOI: 10.1016/j.vprsr.2022.100829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 12/07/2022] [Accepted: 12/26/2022] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Cystic Echinococcosis (CE) is endemic in humans and livestock in many pastoral communities in Kenya. The distribution of the disease is enhanced by several factors, including livestock trade, which has allowed for the spread of CE to non-endemic areas such as western Kenya. Dogs' roaming behaviour, with consequent contamination of the environment with intestinal parasites, could then lead to parasite establishment. This study examined dogs' infection levels with taeniid eggs and their potential role in contaminating the environment with intestinal parasites. METHODOLOGY We selected sixteen ruminant slaughterhouses in Busia and Bungoma Counties, and around each slaughterhouse we identified ten homesteads owning free-roaming dogs. We administered a questionnaire on dog management practices to the homestead owner and collected a faecal sample from the dog's rectum. In homesteads around 8 of the 16 slaughterhouses, we collared dogs with a GPS tracker to assess their movement patterns. The faecal samples were examined microscopically following zinc-chloride sieving-floatation technique for the presence of taeniid eggs and other canine intestinal parasites. Polymerase Chain Reaction - Restriction Fragment Length Polymorphism of NADH dehydrogenase subunit 1 gene and sequencing were used to confirm taeniid eggs identified during microscopy. Additionally, the Coproantigen-ELISA was used to detect the presence of taeniid antigen in a sub-set of the faecal samples. RESULTS Helminths detected in the 155 dogs sampled included hookworms (n = 92; 59.4%), ascarids (n = 15; 9.7%), and taeniids (n = 1; 0.6%). Through Copro-PCR, 13 eggs extracted from the sample of the only taeniid infected dog were sequenced and identified as E. canadensis (G6/7) [n = 1], Taenia multiceps [n = 1], and Taenia serialis [n = 6]; the remaining were indeterminate. Of the 77 faecal samples tested for E. granulosus sensu lato (s. l.) with the Copro-ELISA, 64 (83.1%) were negative, 12 (15.6%) were positive, while 1 (1.3%) was suspicious. The dogs travelled a median of 13.5 km daily, and 28 dogs visited the slaughterhouses during the 5-day recording period. CONCLUSION The results indicate a relatively high carriage of zoonotic parasites by free-roaming domestic dogs in western Kenya, which poses a risk to human and livestock populations. We report for the first time a domestic lifecycle of Echinococcus canadensis and Taenia multiceps in western Kenya, as well as a presumptive sylvatic cycle of coenurosis by T. serialis. We recommend an extensive and ongoing Copro-antigen survey of dog faeces, broader assessment of dog parasites with zoonotic potential, adherence to slaughterhouse management practices, and dog-ownership programmes to highlight the importance of deworming and restricted dog movements.
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Affiliation(s)
- Titus Mutwiri
- Jomo Kenyatta University of Agriculture and Technology, P.O. Box 60200, 00200 Nairobi, Kenya; International Livestock Research Institute, P.O. Box 30709, 00100 Nairobi, Kenya; Kenya Methodist University, P.O. Box 45240, 00100 Nairobi, Kenya.
| | - Anne W T Muigai
- Jomo Kenyatta University of Agriculture and Technology, P.O. Box 60200, 00200 Nairobi, Kenya
| | - Japhet Magambo
- Meru University of Science and Technology, P.O. Box 972, 60200 Meru, Kenya
| | - Erastus Mulinge
- Kenya Medical Research Institute, P.O. Box 54840, 00200 Nairobi, Kenya
| | - Lucy Gitau
- Kenya Medical Research Institute, P.O. Box 54840, 00200 Nairobi, Kenya
| | - Patrick Muinde
- International Livestock Research Institute, P.O. Box 30709, 00100 Nairobi, Kenya; World Animal Protection, P.O. Box 66580, 00800 Nairobi, Kenya
| | - Judy M Bettridge
- International Livestock Research Institute, P.O. Box 30709, 00100 Nairobi, Kenya; Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom; Natural Resources Institute, University of Greenwich, Chatham Maritime, United Kingdom
| | - Mike Rogan
- School of Science, Engineering, and Environment, University of Salford, United Kingdom
| | - Eric M Fèvre
- International Livestock Research Institute, P.O. Box 30709, 00100 Nairobi, Kenya; Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom.
| | - Laura C Falzon
- International Livestock Research Institute, P.O. Box 30709, 00100 Nairobi, Kenya; Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, United Kingdom
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Lopes P, Gomes J, Cunha MV. Knowledge, attitudes, and practices of municipal veterinary practitioners towards echinococcosis. Vet Parasitol Reg Stud Reports 2022; 34:100759. [PMID: 36041795 DOI: 10.1016/j.vprsr.2022.100759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 05/22/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
Cystic echinococcosis (CE) and alveolar echinococcosis (AE) are among the most relevant zoonoses in Europe. According to the European Food Safety Authority (EFSA), Echinococcus granulosus sensu lato causing CE is the most significant foodborne parasite in South-Western Europe, followed by Echinococcus multilocularis, the etiological agent of AE. Among the challenges and opportunities highlighted in the literature to combat these diseases are the need to evaluate and increase awareness of stakeholders. In Portugal, Municipal Veterinary Practitioners (MVP) are the animal health authority at the municipality level, playing a crucial role in diagnosis, prevention and control of infectious diseases in animals, helping to mitigate transmission to humans. However, their knowledge, attitudes, and practices (KAP) towards CE, as well as awareness of AE expansion across Europe, remain overlooked. In this work, a cross-sectional study was conducted for the first time in Portugal to bridge knowledge gaps concerning CE and AE, using an online self-administered questionnaire collecting information on the municipal kennel, KAP towards CE, and understanding of AE epidemiology. Eighty-three MVP from mainland and islands completed the questionnaire, with highest representability from the central-northern region. MVP had, on average, a medium to high level of knowledge of CE but acquaintance with AE was insufficient, although echinococcosis was frequently mentioned as target of health education sessions (77.0%). A high rate (60%) of reported entries into municipal kennels of stray dogs originating from countries with AE endemic areas was registered, suggesting that the presence of these potentially AE-infected stray dogs pose public health risks. Most kennels did not perform routine coprological analysis or faecal matter disinfection after dog internal deworming. The lack of proper training and well-conceived written plans of infection control and prevention were evidenced in several kennels. Altogether, our findings highlight the need to update knowledge and practice of MVP under the One Health approach, through reinforced education, training and communication involving all stakeholders.
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Affiliation(s)
- Patrícia Lopes
- Centre for Ecology, Evolution and Environmental Changes (cE3c) & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal
| | - Jacinto Gomes
- Agrarian School of Elvas, Polytechnic Institute of Portalegre, Portalegre, Portugal
| | - Mónica V Cunha
- Centre for Ecology, Evolution and Environmental Changes (cE3c) & CHANGE - Global Change and Sustainability Institute, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal; Biosystems & Integrative Sciences Institute (BioISI), Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal.
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Wild Carnivore Survey of Echinococcus Species in Slovenia. Animals (Basel) 2022; 12:ani12172223. [PMID: 36077943 PMCID: PMC9454715 DOI: 10.3390/ani12172223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/24/2022] [Accepted: 08/26/2022] [Indexed: 11/24/2022] Open
Abstract
Wild carnivores are definitive hosts and potential reservoirs for the tapeworm Echinococcus sp. which can cause cystic and alveolar echinococcosis. Both are considered neglected and important food-borne pandemics. This study is the first to molecularly test Slovenian wild carnivores for Echinococcus species that can cause disease in humans. Fecal samples from 210 red foxes (Vulpes vulpes), 42 wolves (Canis lupus), 39 golden jackals (Canis aureus), 18 martens (Marten sp.), 2 Eurasian lynx (Lynx lynx), 2 European badger (Meles meles), and 1 Eurasian otter (Lutra lutra) were examined for Echinococcus granulosus sensu lato (EGsl: E. granulosus sensu stricto, E. canadensis) and E. multilocularis (EM) using real-time PCR. Red foxes (29.1%) and golden jackals (18%) were positive for EM. All animals examined were negative for EGsl. Univariate analysis showed no significant differences in EM prevalence with respect to animal species (red fox vs., golden jackal) (p = 0.22), age (p = 0.12), and sex (p = 0.18). Prevalence of EM was associated with the region (p < 0.001), with regions in central and southern Slovenia having higher EM prevalence and risk of infection. Due to the increase in population and expansion of habitat, the golden jackal may soon become as important definitive host for EM as the red fox.
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Analysis of vaccination strategy against cystic echinococcosis developed in the Province of Río Negro, Argentina: 12 years of work. Vet Parasitol 2022; 310:109790. [PMID: 36054969 DOI: 10.1016/j.vetpar.2022.109790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/21/2022]
Abstract
Cystic echinococcosis (CE) is a zoonosis caused by species of the complex Echinococcus granulosus, sensu lato in their larval stage. It is an endemic disease in the province of Río Negro, where small farmers generally have both sheep and goats. Lamb vaccination with EG95 was incorporated in 2009 with very good results: in fact, it contributed to a significant drop in prevalence of infection in both sheep and goats, when determined by necropsy and serology in 2018. In the design of the activity, it was decided not to vaccinate goats in order to minimize the operational requirements of vaccination and comments from producers about the rarity of observing hydatid cysts in goat viscera were considered. OBJECTIVE To identify causes which can still generate infection in dogs, and to detect species/genotypes in circulation in the province of Río Negro. MATERIALS AND METHODS In indigenous reserves comprised within the area of lamb vaccination with 3 doses of EG95, (dose 1 in December, dose 2 in January and dose 3 in December of the year following, at the time of application of dose 1 to the new lambs). Prevalence in adult goats and sheep was determined by necropsy and serology (ELISA). Infective species/genotypes present in the work area and in the rest of the province of Río Negro were identified by Cox1 mitochondrial gene sequencing. Epidemiological analysis was completed with surveys among farmers about slaughter habits for human consumption. RESULTS Through serology and necropsy, infection rates in vaccinated and nonvaccinated sheep were significantly different (21% versus 66%). Non-vaccinated sheep and non-vaccinated goats were also significantly different in that there was less infection in goats compared to sheep (7% versus 66% for necropsy, 30% versus 61% for serology); After many years of sheep vaccination the infection positives were low, and differences between vaccinated sheep and non-vaccinated goats turned out non-significant (21% versus 7%). With reference to epidemiology and control along the period 2018-2022, PZQ dosing of dogs 4 times a year was maintained, and 2 extra deworming tasks were introduced together with dose 1 and 2 of EG95, performed by the veterinary vaccination team, ensuring the ingestion of PZQ by dogs. Assessment of animal slaughter for consumption in 41 producers showed that 21 of them slaughter a monthly average of 18 goats (an average of 0.43 goat per month per farm) and 36 in all slaughter 35 old sheep in a year (average of 0.85 sheep per month per farm). With respect to identification of species/genotypes as from 2010, genotypes G1 have been found in 11 sheep (out of which 6 belong to vaccination zone) and genotypes G7, in one pig. A goat cyst within vaccination zone turned out unfertile and it was not possible to sequence it. CONCLUSION Design and implementation of a vaccine programme combined with the use of PZQ resulted as cost-effective, since it was possible to maintain the vaccine over time, with clear impact on prevalence decrease in sheep and goats.
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Shams M, Khazaei S, Naserifar R, Shariatzadeh SA, Anvari D, Montazeri F, Pirestani M, Majidiani H. Global distribution of Echinococcus granulosus genotypes in domestic and wild canids: a systematic review and meta-analysis. Parasitology 2022; 149:1147-1159. [PMID: 35591776 PMCID: PMC11010506 DOI: 10.1017/s0031182022000658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 04/18/2022] [Accepted: 04/29/2022] [Indexed: 11/06/2022]
Abstract
The current systematic review and meta-analysis demonstrate the genotypic distribution of canine echinococcosis worldwide. Studies published from the inception until 21 May 2021 were screened, relevant articles were selected and the random-effect model was used to draw forest plots with 95% confidence intervals (CIs). Totally, 44 articles were included, mostly examined dogs (37 records), followed by wolf (8 records), jackal (7 records), fox (3 records), pump fox (3 records) and coyote (1 record). Echinococcus granulosus sensu stricto (G1–G3) and G6/7 cluster of Echinococcus canadensis were the most common genotypes among canids. Most studies were conducted in Asia and Europe with 17 and 15 datasets, respectively. Exclusively, Iran possessed the highest number of studies (10 records). Meta-analysis showed that the pooled molecular prevalence of echinococcosis was 33.82% (95% CI 24.50–43.83%). Also, the highest and lowest prevalence of canine echinococcosis was calculated for South America (66.03%; 95% CI 25.67–95.85%) and Europe (19.01%; 95% CI 9.95–30.16%). Additionally, there were statistically significant differences between the global prevalence of echinococcosis in canines and publication year, continent, country, sample type, host and molecular test. These findings will elevate our knowledge on the poorly known canine echinococcosis worldwide.
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Affiliation(s)
- Morteza Shams
- Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
- Student Research Committee, Ilam University of Medical Sciences, Ilam, Iran
| | - Sasan Khazaei
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Razi Naserifar
- Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Seyyed Ali Shariatzadeh
- Department of Parasitology, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Davood Anvari
- School of Medicine, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Fattaneh Montazeri
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Majid Pirestani
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hamidreza Majidiani
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran
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Sykes AL, Larrieu E, Poggio TV, Céspedes MG, Mujica GB, Basáñez MG, Prada JM. Modelling diagnostics for Echinococcus granulosus surveillance in sheep using Latent Class Analysis: Argentina as a case study. One Health 2022; 14:100359. [PMID: 34977321 PMCID: PMC8683760 DOI: 10.1016/j.onehlt.2021.100359] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 11/30/2021] [Accepted: 12/03/2021] [Indexed: 11/03/2022] Open
Abstract
Echinococcus granulosus sensu lato is a globally prevalent zoonotic parasitic cestode leading to cystic echinococcosis (CE) in both humans and sheep with both medical and financial impacts, whose reduction requires the application of a One Health approach to its control. Regarding the animal health component of this approach, lack of accurate and practical diagnostics in livestock impedes the assessment of disease burden and the implementation and evaluation of control strategies. We use of a Bayesian Latent Class Analysis (LCA) model to estimate ovine CE prevalence in sheep samples from the Río Negro province of Argentina accounting for uncertainty in the diagnostics. We use model outputs to evaluate the performance of a novel recombinant B8/2 antigen B subunit (rEgAgB8/2) indirect enzyme-linked immunosorbent assay (ELISA) for detecting E. granulosus in sheep. Necropsy (as a partial gold standard), western blot (WB) and ELISA diagnostic data were collected from 79 sheep within two Río Negro slaughterhouses, and used to estimate individual infection status (assigned as a latent variable within the model). Using the model outputs, the performance of the novel ELISA at both individual and flock levels was evaluated, respectively, using a receiver operating characteristic (ROC) curve, and simulating a range of sample sizes and prevalence levels within hypothetical flocks. The estimated (mean) prevalence of ovine CE was 27.5% (95%Bayesian credible interval (95%BCI): 13.8%-58.9%) within the sample population. At the individual level, the ELISA had a mean sensitivity and specificity of 55% (95%BCI: 46%-68%) and 68% (95%BCI: 63%-92%), respectively, at an optimal optical density (OD) threshold of 0.378. At the flock level, the ELISA had an 80% probability of correctly classifying infection at an optimal cut-off threshold of 0.496. These results suggest that the novel ELISA could play a useful role as a flock-level diagnostic for CE surveillance in the region, supplementing surveillance activities in the human population and thus strengthening a One Health approach. Importantly, selection of ELISA cut-off threshold values must be tailored according to the epidemiological situation.
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Key Words
- Argentina
- BCI, Bayesian Credible Interval
- Bayesian inference
- CE, Cystic Echinococcosis
- CI, Confidence Interval
- DALY, Disability-adjusted life year
- Diagnostics
- ELISA, Enzyme-Linked Immunosorbent Assay
- Echinococcosis
- JAGS, Just Another Gibbs Sampler
- LCA, Latent class analysis
- Latent class analysis
- MCAR, Missing completely at random
- MCMC, Markov Chain Monte Carlo
- OD, Optical density
- ROC, Receiver Operating Characteristic
- SD, Standard deviation
- Surveillance
- USD, United States Dollar
- WB, Western blot
- WHO, World Health Organization.
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Affiliation(s)
- Abagael L. Sykes
- London Centre for Neglected Tropical Disease Research and MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK
| | - Edmundo Larrieu
- Facultad de Ciencias Veterinarias, Universidad Nacional de La Pampa, General Pico, Argentina
- Escuela de Veterinaria, Universidad Nacional de Río Negro, Choele Choel, Argentina
| | | | | | | | - Maria-Gloria Basáñez
- London Centre for Neglected Tropical Disease Research and MRC Centre for Global Infectious Disease Analysis, School of Public Health, Imperial College London, London, UK
| | - Joaquin M. Prada
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
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20
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Yürük M, Yaman O, Sivcan E, Erdoğan E. Retrospective Determination of the Prevelense of Anti- Echinococcus granulosus Antibodies in Cystic Echinococcosis Pre-diagnosed Patients at Erciyes University Faculty of Medicine. TURKIYE PARAZITOLOJII DERGISI 2022; 46:133-139. [PMID: 35604192 DOI: 10.4274/tpd.galenos.2022.32032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE Cystic echinococcosis (CE) is a parasitic disease that has been known for years in helminth diseases and it is important as human and animal health problem in many parts of the world and in our country due to economic losses. In this study, it was aimed to retrospectively evaluate the distribution of anti-E. granulosus-IgG antibodies in patients with pre-diagnosis of CE that referred to parasitology laboratory between January 2013-December 2018. METHODS Commercial kit was used for indirect hemaglutination (IHA), indirect fluorescent antibody test (IFAT) and Western blot (WB) methods using sera from patient samples was applied according to the kit proposal. In addition, patient materials for CAM, CSF and blood for which polymerase chain reaction (PCR)/QPCR tests were requested were examined. RESULTS Sera of the patients who were tested with at least one of the IHA, IFAT and WB methods or a combination of these methods, and 443 cases out of 2.283 cases were found to be E. granulosus seropositive. It was determined that 369 (62.03%) of 443 positive patients were female and 330 (37.97%) were male patients. Among these patients, 87 patients whose IFAT and/or IHA tests were negative were found to have positive results with the WB method. IFAT or IHA test results of 13 patients with negative WB tests were found to be positive. Four patients were identified with both tests positive but WB test results negative. In addition, 36 of 72 patients who underwent PCR/QPCR tests were found to be positive. CONCLUSION As a result of a six-year retrospective screening, 22% of the cases were found to be positive, and it was concluded that the prevalence of CE is high and the use of a single test may be insufficient in the diagnosis of CE, therefore, test combinations will increase the sensitivity and reliability in reaching the correct diagnosis.
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Affiliation(s)
- Merve Yürük
- Erciyes Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Kayseri, Türkiye
| | - Ozan Yaman
- Erciyes Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Kayseri, Türkiye
| | - Eda Sivcan
- Erciyes Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Kayseri, Türkiye
| | - Emrah Erdoğan
- Erciyes Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Kayseri, Türkiye
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21
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Poggio TV, Gómez JM, Boado LA, Vojnov AA, Larrieu E, Mujica GB, Jensen O, Gertiser ML, Prada JM, Basáñez MG. Immunodiagnosis of cystic echinococcosis in livestock: Development and validation dataset of an ELISA test using a recombinant B8/2 subunit of Echinococcus granulosus sensu lato. Data Brief 2022; 42:108255. [PMID: 35669005 PMCID: PMC9163409 DOI: 10.1016/j.dib.2022.108255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/29/2022] [Accepted: 05/04/2022] [Indexed: 11/18/2022] Open
Abstract
The accuracy of screening tests for detecting cystic echinococcosis (CE) in livestock depends on characteristics of the host-parasite interaction and the extent of serological cross-reactivity with other taeniid species. The AgB8 kDa protein is considered to be the most specific native or recombinant antigen for immunodiagnosis of ovine CE. A particular DNA fragment coding for rAgB8/2 was identified, that provides evidence of specific reaction in the serodiagnosis of metacestode infection. We developed and validated an IgG Enzyme Linked Immunosorbent Assay (ELISA) test using a recombinant antigen B sub-unit EgAgB8/2 (rAgB8/2) of Echinoccocus granulosus sensu lato (s.l.) to estimate CE prevalence in sheep. A 273 bp DNA fragment coding for rAgB8/2 was expressed as a fusion protein (∼30 kDa) and purified by affinity chromatography. Evaluation of the analytical and diagnostic performance of the ELISA followed the World Organisation for Animal Health (OIE) manual, including implementation of serum panels from: uninfected lambs (n = 79); experimentally infected (with 2,000 E. granulosus s.l. eggs each) sheep with subsequent evidence of E. granulosus cysts by necropsy (n = 36), and animals carrying other metacestode/trematode infections (n = 20). The latter were used to assess the cross-reactivity of rAgB8/2, with these animals being naturally infected with Taenia hydatigena, Thysanosoma actinioides and/or Fasciola hepatica. EgAgB8/2 showed cross-reaction with only one serum sample from a sheep infected with Ta. hydatigena out of the 20 animals tested. Furthermore, the kinetics of the humoral response over time in five 6-month old sheep, each experimentally infected with 2,000 E. granulosus s.l. eggs, was evaluated up to 49 weeks (approximately one year) post infection (n = 5). The earliest detectable IgG response against rAgB8/2 was observed in sera from two and four sheep, 7 and 14 days after experimental infection, respectively. The highest immune response across all five animals was found 16 to 24 weeks post infection.
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Affiliation(s)
- Thelma Verónica Poggio
- Laboratorio de Diseño y Desarrollo, Instituto de Ciencia y Tecnología César Milstein (ICT-Milstein-CONICET), Buenos Aires, Argentina
| | - José Manuel Gómez
- Laboratorio de Diseño y Desarrollo, Instituto de Ciencia y Tecnología César Milstein (ICT-Milstein-CONICET), Buenos Aires, Argentina
| | - Lorena Analia Boado
- Laboratorio de Diseño y Desarrollo, Instituto de Ciencia y Tecnología César Milstein (ICT-Milstein-CONICET), Buenos Aires, Argentina
| | - Adrián Alberto Vojnov
- Laboratorio de Diseño y Desarrollo, Instituto de Ciencia y Tecnología César Milstein (ICT-Milstein-CONICET), Buenos Aires, Argentina
| | - Edmundo Larrieu
- Facultad de Ciencias Veterinarias, Universidad Nacional de La Pampa, General Pico, Argentina
- Escuela de Veterinaria, Universidad Nacional de Río Negro, Choele Choel, Argentina
| | | | - Oscar Jensen
- Centro de Investigación en Zoonosis, Provincia de Chubut, Argentina
| | | | - Joaquin M. Prada
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
| | - Maria-Gloria Basáñez
- London Centre for Neglected Tropical Disease Research and MRC Centre for Global Infectious Disease Analysis, Faculty of Medicine, School of Public Health, Imperial College London, London, UK
- Corresponding author.
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22
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Cystic Echinococcosis in Slaughtered Cattle and Sheep from North Macedonia. MACEDONIAN VETERINARY REVIEW 2022. [DOI: 10.2478/macvetrev-2022-0011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract
Cystic echinococcosis is a cosmopolitan zoonotic infection, commonly seen in areas where livestock and dogs are kept together. The objective of this study was to investigate the prevalence of echinococcosis in slaughtered cattle and sheep in North Macedonia and to evaluate the location and fertility/sterility rates of the cysts. A total of 302 slaughtered animals were examined with visual inspection, palpation, and incision of the internal organs in order to detect cysts. Microscopic examination was carried out to determine the presence of protoscoleces. The overall prevalence of echinococcosis in slaughtered cattle and sheep was 60%. The presence of cysts increased with age in cattle. In both cattle and sheep, the most common affected organs were the liver and lungs infected with more than one cyst. The findings showed higher fertility rate in sheep which confirmed their role as the most important intermediate host. This study shows that North Macedonia is an endemic region, and serious control strategies should be implemented, with special emphasis on safety disposal of infected organs and anthelmintic treatment of the dogs.
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Pinello KC, Palmieri C, Ruiz J, Zaidan Dagli ML, Niza-Ribeiro J. Risks and benefits of the interaction with companion animals. One Health 2022. [DOI: 10.1016/b978-0-12-822794-7.00012-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Prevalence and spatial distribution characteristics of human echinococcosis in China. PLoS Negl Trop Dis 2021; 15:e0009996. [PMID: 34962928 PMCID: PMC8789093 DOI: 10.1371/journal.pntd.0009996] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 01/25/2022] [Accepted: 11/15/2021] [Indexed: 11/27/2022] Open
Abstract
Background Echinococcosis is a zoonotic parasitic disease caused by larval stages of cestodes belonging to the genus Echinococcus. The infection affects people’s health and safety as well as agropastoral sector. In China, human echinococcosis is a major public health burden, especially in western China. Echinococcosis affects people health as well as agricultural and pastoral economy. Therefore, it is important to understand the prevalence status and spatial distribution of human echinococcosis in order to advance our knowledge of basic information for prevention and control measures reinforcement. Methods Report data on echinococcosis were collected in 370 counties in China in 2018 and were used to assess prevalence and spatial distribution. SPSS 21.0 was used to obtain the prevalence rate for CE and AE. For statistical analyses and mapping, all data were processed using SPSS 21.0 and ArcGIS 10.4, respectively. Chi-square test and Exact probability method were used to assess spatial autocorrelation and spatial clustering. Results A total of 47,278 cases of echinococcosis were recorded in 2018 in 370 endemic counties in China. The prevalence rate of human echinococcosis was 10.57 per 10,000. Analysis of the disease prevalence showed obvious spatial positive autocorrelation in globle spatial autocorrelation with two aggregation modes in local spatial autocorrelation, namely high-high and low-high aggregation areas. The high-high gathering areas were mainly concentrated in northern Tibet, western Qinghai, and Ganzi in the Tibetan Autonomous Region and in Sichuan. The low-high clusters were concentrated in Gamba, Kangma and Yadong counties of Tibet. In addition, spatial scanning analysis revealed two spatial clusters. One type of spatial clusters included 71 counties in Tibet Autonomous Region, 22 counties in Qinghai, 11 counties in Sichuan, three counties in Xinjiang Uygur Autonomous Region, two counties in Yunnan, and one county in Gansu. In the second category, six types of spatial clusters were observed in the counties of Xinjiang Uygur Autonomous Region, and the Qinghai, Gansu, and Sichuan Provinces. Conclusion This study showed a serious prevalence of human echinococcosis with obvious spatial aggregation of the disease prevalence in China. The Qinghai-Tibet Plateau is the "hot spot" area of human echinococcosis in China. Findings from this study indicate that there is an urgent need of joint strategies to strengthen efforts for the prevention and control of echinococcosis in China, especially in the Qinghai-Tibet Plateau. Echinococcosis is a zoonotic parasitic disease caused by larval stages of cestodes belonging to the genus Echinococcus. In China, human echinococcosis is a major public health burden, especially in western China. Therefore, it is important to understand the prevalence status and spatial distribution of human echinococcosis in order to provide basic information for prevention and control measures reinforcement. To describe the distribution and analyze the prevalence and spatial distribution characteristics of human echinococcosis in China, report data of echinococcosis were collected in 370 counties in 2018. For the year 2018, there were 47,278 cases of echinococcosis recorded in 370 endemic counties in China. Analysis of the disease prevalence showed obvious spatial positive autocorrelation in global spatial autocorrelation with two aggregation modes in local spatial autocorrelation, namely high-high and low-high aggregation areas. The high-high gathering areas were mainly concentrated in northern Tibet, western Qinghai, and Ganzi in the Tibetan Autonomous Region and in Sichuan. This study showed obvious spatial aggregation of human echinococcosis prevalence in China. The Qinghai-Tibet Plateau is the "hot spot" area of human echinococcosis in China. Such findings indicate that here is an urgent need of joint strategies to strengthen efforts for the prevention and control of echinococcosis in China, especially in the Qinghai-Tibet Plateau.
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Khan H, Ahmed H, Afzal MS, Awan UA, Khurram M, Simsek S, Cao J. Detection of Anti- Echinococcus granulosus Antibodies in Humans: An Update from Pakistan. Pathogens 2021; 11:pathogens11010029. [PMID: 35055977 PMCID: PMC8781053 DOI: 10.3390/pathogens11010029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/18/2021] [Accepted: 12/20/2021] [Indexed: 11/16/2022] Open
Abstract
Human cystic echinococcosis (CE) is a zoonotic disease caused by the larval stage of Echinococcus granulosus sensu lato that causes economic losses by affecting livestock and also poses a public health threat worldwide. The present study is the first retrospective report on the seroprevalence of anti-E. granulosus antibodies in humans in Pakistan. The study used data from 93 blood analysis reports of patients suspected of having CE from different medical centers in Lahore, Pakistan. Out of 93 sera samples, 20 (21.5%) were seropositive, and higher seropositivity (17.2%) was recorded with the indirect hemagglutination test (IHA) than with enzyme-linked immunosorbent assay (ELISA). The findings indicated that age, gender, and year had no significant relationship with the seropositivity of CE. The current study provides directions towards the management of the disease in the near future in Pakistan.
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Affiliation(s)
- Huma Khan
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan
| | - Haroon Ahmed
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad 45550, Pakistan
| | - Muhammad Sohail Afzal
- Department of Life Sciences, School of Science, University of Management & Technology (UMT), Lahore 54700, Pakistan
| | - Usman Ayub Awan
- Department of Medical Laboratory Technology, The University of Haripur, Haripur 22620, Pakistan
| | - Muhammad Khurram
- Department of Life Sciences, School of Science, University of Management & Technology (UMT), Lahore 54700, Pakistan
| | - Sami Simsek
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, Elazig 23119, Turkey
| | - Jianping Cao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Shanghai 200025, China
- The School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Morelli S, Diakou A, Di Cesare A, Colombo M, Traversa D. Canine and Feline Parasitology: Analogies, Differences, and Relevance for Human Health. Clin Microbiol Rev 2021; 34:e0026620. [PMID: 34378954 PMCID: PMC8404700 DOI: 10.1128/cmr.00266-20] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Cats and dogs are treated as family members by most pet owners. Therefore, a high quality of veterinary care and preventive medicine is imperative for animal health and welfare and for the protection of humans from zoonotic pathogens. There is a general perception of cats being treated as "small dogs," especially in the field of clinical parasitology. As a result, several important differences between the two animal species are not taken into proper consideration and are often overlooked. Dogs and cats are profoundly different under evolutionary, biological, ethological, behavioral, and immunological standpoints. These differences impact clinical features, diagnosis, and control of canine and feline parasites and transmission risk for humans. This review outlines the most common parasitoses and vector-borne diseases of dogs and cats, with a focus on major convergences and divergences, and discusses parasites that have (i) evolved based on different preys for dogs and cats, (ii) adapted due to different immunological or behavioral animal profiles, and (iii) developed more similarities than differences in canine and feline infections and associated diseases. Differences, similarities, and peculiarities of canine and feline parasitology are herein reviewed in three macrosections: (i) carnivorism, vegetarianism, anatomy, genetics, and parasites, (ii) evolutionary adaptation of nematodes, including veterinary reconsideration and zoonotic importance, and (iii) behavior and immune system driving ectoparasites and transmitted diseases. Emphasis is given to provide further steps toward a more accurate evaluation of canine and feline parasitology in a changing world in terms of public health relevance and One Health approach.
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Affiliation(s)
- Simone Morelli
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | - Anastasia Diakou
- Faculty of Veterinary Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Angela Di Cesare
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | | | - Donato Traversa
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
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27
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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] [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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A survey of intestinal helminths in domestic dogs in a human-animal-environmental interface: the Oloisukut Conservancy, Narok County, Kenya. J Helminthol 2021; 95:e59. [PMID: 34641982 DOI: 10.1017/s0022149x21000547] [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: 11/07/2022]
Abstract
Dogs living in a domestic-wildlife interface can serve as reservoirs and sentinels of parasites shared among humans, domestic animals and wildlife. In Kenya, the epidemiology of intestinal parasites of dogs and their role as reservoirs of zoonoses is poorly understood, especially in domestic-wildlife interfaces. This study aimed to determine the occurrence of intestinal helminths in domestic dogs in the Oloisukut Conservancy. One hundred dog faecal samples were collected per rectum and examined microscopically following zinc chloride flotation and formal-ether concentration techniques. Genotyping of helminths was achieved by nested polymerase chain reaction of NADH dehydrogenase subunit 1, cytochrome oxidase 1 and partial sequencing. Nine genera were detected by microscopy in 65 (65%) dog faecal samples from 54/76 (71.05%) households. The most frequent helminths were hookworm (39%), Spirometra spp. (17%), taeniids (13%), Toxocara spp. (10%), Trichuris spp. (10%), Spirocerca lupi (5%), Physaloptera spp. (2%), Dipylidium caninum (1%) and Strongyloides spp. (1%). Ancylostoma caninum was the only hookworm species detected in dogs, while Taenia serialis and Taenia madoquae were detected in four and one faecal samples, respectively. This study reports for the first time the molecular detection of the cestodes Spirometra theileri, D. caninum and Mesocestoides sp. in dogs in Kenya. The presence of zoonotic helminths in dogs indicates that the residents of this conservancy are exposed to public health risks. The helminths reported here confirm the interaction of domestic dogs with wildlife. An integrated control programme involving the medical, veterinary and wildlife conservation professionals is needed to avert transmission of infectious diseases to humans, domestic animals and wildlife.
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Avcioglu H, Guven E, Balkaya I, Kirman R, Akyuz M, Mebarek Bia M, Gulbeyen H, Yaya S. The situation of echinococcosis in stray dogs in Turkey: the first finding of Echinococcus multilocularis and Echinococcus ortleppi. Parasitology 2021; 148:1092-1098. [PMID: 34002689 PMCID: PMC11010043 DOI: 10.1017/s0031182021000755] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/07/2021] [Accepted: 05/10/2021] [Indexed: 12/20/2022]
Abstract
Echinococcosis, caused by larval stage of the genus Echinococcus, is one of the most important zoonotic diseases worldwide. The purpose of this study was to determine the presence and prevalence of Echinococcus species in stray dogs of Erzurum, a highly endemic region for cystic echinococcosis (CE) and alveolar echinococcosis (AE) in Turkey. The study samples consisted of 446 stray dog faecal specimens collected from an animal shelter in Erzurum, Turkey, between October 2015 and February 2016. The faecal samples were collected from individual dogs for the isolation of taeniid eggs using the sequential sieving and flotation method (SSFM). Molecular analyses and sequencing revealed the prevalence of Echinococcus spp. as 14.13% (63/446) in faecal samples. The stray dogs harboured five different Echinococcus spp.: E. granulosus s.s. (G1/G3) (n = 41), E. equinus (G4) (n = 3), E. ortleppi (G5) (n = 1), E. canadensis (G6/G7) (n = 3) and E. multilocularis (n = 16). E. granulosus s.s. was the most abundant species. Surprisingly, the occurrence of E. multilocularis in dogs was revealed for the first time in Turkey. E. ortleppi was also reported for the first time in Turkey. These findings highlight a significant public health risk for human AE and CE, presenting useful baseline data on Echinococcus spp. infection in dogs for designing control strategies.
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Affiliation(s)
- Hamza Avcioglu
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum25240, Turkey
| | - Esin Guven
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum25240, Turkey
| | - Ibrahim Balkaya
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum25240, Turkey
| | - Ridvan Kirman
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum25240, Turkey
| | - Muzaffer Akyuz
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum25240, Turkey
| | - Mohammed Mebarek Bia
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum25240, Turkey
- Department of Parasitology, Parasitology Research Center and Parasite Resource Bank, Chungbuk National University, School of Medicine, Cheongju28644, Korea
| | - Hatice Gulbeyen
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum25240, Turkey
| | - Sali Yaya
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum25240, Turkey
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Borhani M, Fathi S, Darabi E, Jalousian F, Simsek S, Ahmed H, Kesik HK, Hosseini SH, Romig T, Harandi MF, Mobedi I. Echinococcoses in Iran, Turkey, and Pakistan: Old Diseases in the New Millennium. Clin Microbiol Rev 2021; 34:e0029020. [PMID: 34076492 PMCID: PMC8262809 DOI: 10.1128/cmr.00290-20] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Echinococcosis is considered a cosmopolitan zoonosis caused by different species of small taeniid tapeworms of the genus Echinococcus and is regarded as a neglected zoonosis. Cystic and alveolar echinococcoses are endemic diseases of Tibetan, Pamir, and Iranian plateaus. All of the countries within the Iranian plateau are affected by echinococcosis. Pakistan, Turkey, and Iran are the three most populous countries of the region, in which echinococcosis is highly endemic. The three neighboring countries share strong cultural and socioeconomic ties. The present study aimed to provide a broad review of the status of cystic and alveolar echinococcosis, summarizing the current knowledge about geographical distribution, molecular epidemiology, and transmission dynamics of Echinococcus granulosus sensu lato and Echinococcus multilocularis in this region. Additionally, we aimed to understand disease burden and risk factors as basic requirements for establishing a surveillance system and planning prevention and control programs. A considerable body of information is available on different aspects of echinococcosis in this region; however, several information and research gaps need to be filled before planning control programs. None of the countries in the region have an elaborate echinococcosis control program. Effective control programs require multi/intersectoral coordination within a One Health approach with a long-term political and administrative commitment and enhanced international collaboration among the three countries.
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Affiliation(s)
- Mehdi Borhani
- Research Center for Hydatid Disease in Iran, Kerman University of Medical Sciences, Kerman, Iran
| | - Saeid Fathi
- Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Enayat Darabi
- Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Fatemeh Jalousian
- Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Sami Simsek
- Department of Parasitology, Faculty of Veterinary Medicine, University of Firat, Elazig, Turkey
| | - Haroon Ahmed
- Department of Biosciences, COMSATS University Islamabad (CUI), Islamabad, Pakistan
| | - Harun Kaya Kesik
- Department of Parasitology, Faculty of Veterinary Medicine, University of Bingol, Bingol, Turkey
| | - Seyed Hossein Hosseini
- Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Thomas Romig
- Parasitology Unit, University of Hohenheim, Stuttgart, Germany
| | - Majid Fasihi Harandi
- Research Center for Hydatid Disease in Iran, Kerman University of Medical Sciences, Kerman, Iran
| | - Iraj Mobedi
- Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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Wang L, Wang Q, Cai H, Wang H, Huang Y, Feng Y, Bai X, Qin M, Manguin S, Gavotte L, Wu W, Frutos R. Evaluation of fecal immunoassays for canine Echinococcus infection in China. PLoS Negl Trop Dis 2021; 15:e0008690. [PMID: 33720943 PMCID: PMC7993806 DOI: 10.1371/journal.pntd.0008690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 03/25/2021] [Accepted: 01/17/2021] [Indexed: 11/21/2022] Open
Abstract
Human echinococcosis is present worldwide but it is in China that disease prevalence is the highest. In western China, especially in the Tibetan Plateau, the burden of echinococcosis is the most important. Dogs are a major definitive host of Echinococcus and monitoring the presence of Echinococcus worms in dogs is therefore essential to efficiently control the disease. Detection kits based on three different technologies including sandwich ELISA, (indirect) ELISA, and gold immunodiffusion, are currently marketed and used in China. The objective of this work was to assess the efficacy of these kits, in particular with respect to sensitivity and specificity. Four fecal antigen detection kits for canine infection reflecting the three technologies were obtained from companies and tested in parallel on 220 fecal samples. The results indicate that the performance is lower than expected, in particular in terms of sensitivity. The best results were obtained with the sandwich ELISA technology. The gold immunofiltration yielded the poorest results. In all cases, further development is needed to improve the performance of these kits which are key components for the control of echinococcosis. Although present worldwide, human echinococcosis is at its highest prevalence in western China and particularly in the Tibetan Plateau. Controlling echinococcosis is a national priority and routine monitoring must be established. Dogs are the main infection source in China and surveying Echinococcus worms in dogs is therefore a research priority. Commercial detection kits are currently in use in China to monitor the presence of Echinococcus in dogs. The kits are based on three different technologies including sandwich ELISA with two monoclonal antibodies, (indirect) ELISA, and gold immunodiffusion. National survey programmes are essential for the control of echinococcosis and it is thus very important to assess the efficacy of these kits for the programmes. This work was therefore undertaken to assess efficacy of the kits, in particular with respect to sensitivity and specificity. Four fecal antigen detection kits for canine infection reflecting the three technologies were obtained from companies and tested in parallel on 220 fecal samples. The performance was lower than expected, in particular for their sensitivity which ranged between 51.5% and 83.9% with only two samples displaying a worm burden lower than 100. Three out of four kits showed non-specific cross-reactions with other parasites. The best results were obtained with the sandwich ELISA technology, whereas gold immunofiltration yielded the poorest results. However, in all cases, further development is strongly needed to improve the performance of these kits which are key components for the control of echinococcosis.
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Affiliation(s)
- Liying Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
- HydroSciences Montpellier (HSM), Institut de Recherche pour le Développement (IRD), CNRS, Université Montpellier, Montpellier, France
- ISEM, UMR 5557, Université de Montpellier, Montpellier, France
- Cirad, UMR 17, Intertryp, Campus international de Baillarguet, Montpellier Cedex 5, France
- IES, Université Montpellier, CNRS, Montpellier Cedex 5, France
- * E-mail: (LW); (WW)
| | - Qian Wang
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China
| | - Huixia Cai
- Qinghai Provincial Institute for Endemic Disease Prevention and Control, Xining, China
| | - Hu Wang
- Qinghai Provincial Institute for Endemic Disease Prevention and Control, Xining, China
| | - Yan Huang
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China
| | - Yu Feng
- Gansu Provincial Center for Disease Control and Prevention, Lanzhou, China
| | - Xuefei Bai
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China
| | - Min Qin
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
| | - Sylvie Manguin
- HydroSciences Montpellier (HSM), Institut de Recherche pour le Développement (IRD), CNRS, Université Montpellier, Montpellier, France
| | - Laurent Gavotte
- ISEM, UMR 5557, Université de Montpellier, Montpellier, France
| | - Weiping Wu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
- * E-mail: (LW); (WW)
| | - Roger Frutos
- Cirad, UMR 17, Intertryp, Campus international de Baillarguet, Montpellier Cedex 5, France
- IES, Université Montpellier, CNRS, Montpellier Cedex 5, France
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Avila HG, Maglioco A, Gertiser ML, Ferreyra MP, Ferrari F, Klinger E, Barbery Venturi MS, Agüero FA, Fuchs AG, Jensen O. First report of cystic echinococcosis caused by Echinococcus granulosus sensu stricto/G1 in Felis catus from the Patagonian region of Argentina. Parasitol Res 2021; 120:747-750. [PMID: 33442817 DOI: 10.1007/s00436-021-07048-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 01/05/2021] [Indexed: 11/30/2022]
Abstract
Two domestic cats from the Patagonia rural area in Argentina were found to be naturally infected with Echinococcus granulosus sensu stricto/G1 genotype; so far, the only species/genotype of E. granulosus sensu lato complex described to infect domestic cats. The felines developed abdominal disseminated larval disease; the diagnosis was performed by ultrasound, exploratory laparotomy, and molecular techniques. These results indicate that cystic echinococcosis must be considered for differential diagnosis of felines with abdominal distension and/or observation of vesicles through ultrasound, from endemic areas. Even though cats and dogs are carnivores, differences in digestive physiology and immunological characteristics between them could allow the development of larval or adult worm parasites. Domestic cats with cystic echinococcosis show to be environmentally infected with E. granulosus s. s./G1 eggs.
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Affiliation(s)
- Héctor Gabriel Avila
- Universidad Católica de Cuyo, Facultad de Ciencias Veterinarias, San Luis, Argentina. .,Laboratorio Provincial de Zoonosis de San Juan, Facultad de Ciencias Químicas y Tecnológicas, Ministerio de Salud Pública de San Juan, Universidad Católica de Cuyo, San Juan, Argentina. .,Consejo Nacional de Investigaciones Científicas y Técnicas, (CONICET), CABA, Buenos Aires, Argentina.
| | - Andrea Maglioco
- Consejo Nacional de Investigaciones Científicas y Técnicas, (CONICET), CABA, Buenos Aires, Argentina.,Universidad Abierta Interamericana (UAI), CAECIHS, CABA, Buenos Aires, Argentina
| | | | | | | | - Enrique Klinger
- Hospital Regional de Comodoro Rivadavia, Comodoro Rivadavia, Chubut, Argentina
| | - Melisa Silvana Barbery Venturi
- Consejo Nacional de Investigaciones Científicas y Técnicas, (CONICET), CABA, Buenos Aires, Argentina.,Universidad Abierta Interamericana (UAI), CAECIHS, CABA, Buenos Aires, Argentina
| | - Facundo Ariel Agüero
- Consejo Nacional de Investigaciones Científicas y Técnicas, (CONICET), CABA, Buenos Aires, Argentina.,Universidad Abierta Interamericana (UAI), CAECIHS, CABA, Buenos Aires, Argentina
| | - Alicia Graciela Fuchs
- Universidad Abierta Interamericana (UAI), CAECIHS, CABA, Buenos Aires, Argentina.,ANLIS-Malbrán, CABA, INP "Dr. Mario Fatala-Chaben", Buenos Aires, Argentina
| | - Oscar Jensen
- Centro de Investigación en Zoonosis, Sarmiento, Chubut, Argentina
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Cringoli G, Pepe P, Bosco A, Maurelli MP, Baldi L, Ciaramella P, Musella V, Buonanno ML, Capuano F, Corrado F, Ianniello D, Alves LC, Sarnelli P, Rinaldi L. An integrated approach to control Cystic Echinococcosis in southern Italy. Vet Parasitol 2021; 290:109347. [PMID: 33444910 DOI: 10.1016/j.vetpar.2021.109347] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 11/13/2020] [Accepted: 12/19/2020] [Indexed: 12/13/2022]
Abstract
Cystic echinococcosis (CE) is a severe zoonosis, caused by the larval stage of the tapeworm Echinococcus granulosus. This helminth infection is of increasing public health and socio-economic concern due to the considerable morbidity rates that cause economic losses both in the public health sector and in the livestock industry. Control programmes against E. granulosus are considered long-term actions which require an integrated approach and high expenditure of time and financial resources. Since 2010, an integrated approach to control CE has been implemented in a highly endemic area of continental southern Italy (Campania region). Innovative procedures and tools have been developed and exploited during the control programme based on the following strategies: i) active and passive surveillance in livestock (using geospatial tools for georeferencing), ii) diagnosis in dogs (using the FLOTAC techniques and molecular analysis), iii) targeted treatment of farm dogs (using purpose-built confinement cages), iv) early diagnosis in livestock (by ultrasonography), v) surveillance in humans (through hospital discharge records analysis), vi) monitoring the food chain (analysing raw vegetables), vii) outreach activities to the general public (through dissemination material, e.g. brochures, gadgets, videos, virtual reality). Over eight years, the integrated approach and the new strategies developed have resulted in a noteworthy reduction of the parasite infection rates in livestock (e.g. up to 30 % in sheep). The results obtained so far highlight that using a one health multidisciplinary and multi-institution effort is of pivotal importance in preparing CE control programmes at regional level and could be extended to other endemic Mediterranean areas.
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Affiliation(s)
- G Cringoli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy; Centro Regionale per il Monitoraggio delle Parassitosi (CREMOPAR), Regione Campania, Eboli, SA, Italy; Centro di Riferimento Regionale per le Malattie degli Animali Domestici (CReSan), Regione Campania, Naples, Italy
| | - P Pepe
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy; Centro Regionale per il Monitoraggio delle Parassitosi (CREMOPAR), Regione Campania, Eboli, SA, Italy
| | - A Bosco
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy; Centro Regionale per il Monitoraggio delle Parassitosi (CREMOPAR), Regione Campania, Eboli, SA, Italy
| | - M P Maurelli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy; Centro Regionale per il Monitoraggio delle Parassitosi (CREMOPAR), Regione Campania, Eboli, SA, Italy
| | - L Baldi
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici, Naples, Italy
| | - P Ciaramella
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - V Musella
- Department of Health Sciences, University of Catanzaro Magna Graecia, Catanzaro, Italy
| | - M L Buonanno
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici, Naples, Italy
| | - F Capuano
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici, Naples, Italy
| | - F Corrado
- Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici, Naples, Italy
| | - D Ianniello
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy; Centro Regionale per il Monitoraggio delle Parassitosi (CREMOPAR), Regione Campania, Eboli, SA, Italy
| | - L C Alves
- Department of Veterinary Medicine, Federal Rural University of Pernambuco, Recife, Brazil
| | - P Sarnelli
- Centro Regionale per il Monitoraggio delle Parassitosi (CREMOPAR), Regione Campania, Eboli, SA, Italy; UOD Prevenzione e Sanità Pubblica Veterinaria Regione Campania, Naples, Italy
| | - L Rinaldi
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy; Centro Regionale per il Monitoraggio delle Parassitosi (CREMOPAR), Regione Campania, Eboli, SA, Italy; Centro di Riferimento Regionale per le Malattie degli Animali Domestici (CReSan), Regione Campania, Naples, Italy.
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Wu J, Cai M, Yang J, Li Y, Ding J, Kandil OM, Kutyrev I, Ayaz M, Zheng Y. Comparative analysis of different extracellular vesicles secreted by Echinococcus granulosus protoscoleces. Acta Trop 2021; 213:105756. [PMID: 33189712 DOI: 10.1016/j.actatropica.2020.105756] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 09/12/2020] [Accepted: 11/03/2020] [Indexed: 01/06/2023]
Abstract
Extracellular vesicles (EVs) are heterogeneous populations of different membrane-wrapped vesicles in size and encapsulated cargo and have recently emerged as a crucial carrier with the functions in intercellular communication, being involved in host-parasite interactions. However, Echinococcus granulosus EVs are not fully described. To separate EVs with a different size, the culture supernatant of E. granulosus protoscoleces (PSCs) was sequentially centrifuged at 2,000g, 10,000g and 110,000g, and the resulting precipitates were accordingly named as 2K, 10K and 110K EVs, respectively. The size and morphology of three different EVs were identified using ZETASIZER NANO and transmission electron microscopy (TEM), respectively. Then mass spectrometry was applied to define protein cargo of EVs and EV internalization was assessed using fluorescent microscopy and flow cytometry. The results showed that 2K EVs mainly ranged from 450 to 950 nm in diameter, 10K EVs ranged from 220 to 390 nm and 110K EVs from 60 to 150 nm. A total of 901 EV proteins were identified, 328 of which were commonly found in the three types of EVs. GO analysis revealed that these proteins were mainly involved in binding (44%) and catalytic activity (44%). Three types of EVs were different in biomarkers (Enolase and 14-3-3) and in reactivity with anti-echinococcosis positive serum. Moreover, 110K EVs were more easily internalized by hepatic cells than 10K EVs as well as 2K EVs (p < 0.0001). These results reveal the physical and biological discrepancy among 2K, 10K and 110K EVs, suggesting a distinct role in host-parasite interactions.
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Affiliation(s)
- Jin'en Wu
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China
| | - Mengting Cai
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China
| | - Jing Yang
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China
| | - Yating Li
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China
| | - Juntao Ding
- College of Life Science and Technology, Xinjiang University, Urumqi 830046, China
| | - Omnia M Kandil
- Depterment of Parasitology and Animal Disease, Veterinary Research Division, National Research Centre, Giza12622, Egypt
| | - Ivan Kutyrev
- Institute of General and Experimental Biology, Siberian Branch of Russian Academy of Sciences, Sakhyanovoi st. 6, 670047 Ulan-Ude, Russia
| | - Mazhar Ayaz
- Cholistan University of Veterinary and Animal Sciences, Bahawalpur 73000, Pakistan
| | - Yadong Zheng
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou 225009, China.
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Ben Salah E, Sakly W, Barrera C, Mosbahi S, Bellanger AP, Farhani R, Ksia A, Gottstein B, Nouri A, Babba H, Millon L. Soluble programmed death-1 (sPD-1) as predictor of early surgical outcomes of paediatric cystic echinococcosis. Parasite Immunol 2020; 43:e12809. [PMID: 33207012 DOI: 10.1111/pim.12809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 12/17/2022]
Abstract
AIMS Following treatment, cystic echinococcosis (CE) exhibits a relatively high relapse rate. Here, we evaluated the value of soluble programmed death-1 (sPD-1), sPD-1 ligand (sPD-L1) and anti-recP29 antibody concentrations, as predictors of early surgical treatment outcomes in young CE-affected patients. METHODS AND RESULTS This prospective study included 59 Tunisian children (177 plasmas), where CE was surgically treated and monitored for 3 post-operative years. Based on CE post-surgical development, patients were clustered into a 'No relapsed' CE (NRCE; n = 39) and a 'Relapsed' CE (RCE; n = 20) group. Plasma levels of sPD-1, sPD-L1 and anti-recP29 IgG were measured using ELISA. In the NRCE group, sPD-1, sPD-L1 and anti-recP29 IgG concentrations were significantly lower at D365 than at D30. By contrast, in the RCE group, no significant difference was observed between D0, D30 and D365. When considering individual variations, the probability to be 'relapse-free' was 67% and 73% when anti-recP29 IgG and sPD-L1 level, respectively, decreased between D30 and D365. The probability to be 'relapse-free' was 86% when the sPD-1 level decreased between D30 and D365 (P = .003; chi-square test). CONCLUSION sPD-1 may be a useful biomaker for the early evaluation of surgical procedure efficacy in paediatric CE cases.
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Affiliation(s)
- Eya Ben Salah
- Departement de Biologie clinique B, Faculté de Pharmacie, Laboratoire de Parasitologie-Mycologie Médicale et Moléculaire, LR12ES08, Université de Monastir, Monastir, Tunisia
| | - Wahiba Sakly
- Departement de Biologie clinique B, Faculté de Pharmacie, Laboratoire de Parasitologie-Mycologie Médicale et Moléculaire, LR12ES08, Université de Monastir, Monastir, Tunisia
| | - Coralie Barrera
- Department of Parasitology Mycology, University Hospital of Besançon, UMR/CNRS 6249 Chrono-Environnement Research Team, University of Bourgogne, Franche-Comté, France
| | - Sana Mosbahi
- Paediatric Surgery Department, Fattouma Bourguiba Hospital, Monastir, Medical School, Tunisia
| | - Anne-Pauline Bellanger
- Department of Parasitology Mycology, University Hospital of Besançon, UMR/CNRS 6249 Chrono-Environnement Research Team, University of Bourgogne, Franche-Comté, France
| | - Rabeb Farhani
- Paediatric Surgery Department, Fattouma Bourguiba Hospital, Monastir, Medical School, Tunisia
| | - Amine Ksia
- Paediatric Surgery Department, Fattouma Bourguiba Hospital, Monastir, Medical School, Tunisia
| | - Bruno Gottstein
- Institute for Infectious Diseases, Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Abdellatif Nouri
- Paediatric Surgery Department, Fattouma Bourguiba Hospital, Monastir, Medical School, Tunisia
| | - Hamouda Babba
- Departement de Biologie clinique B, Faculté de Pharmacie, Laboratoire de Parasitologie-Mycologie Médicale et Moléculaire, LR12ES08, Université de Monastir, Monastir, Tunisia
| | - Laurence Millon
- Department of Parasitology Mycology, University Hospital of Besançon, UMR/CNRS 6249 Chrono-Environnement Research Team, University of Bourgogne, Franche-Comté, France
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Quantifying the load of Echinococcus granulosus eggs in experimental dog infection using probe-based copro-qPCR analysis. J Parasit Dis 2020; 44:730-736. [PMID: 33184540 DOI: 10.1007/s12639-020-01265-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 08/25/2020] [Indexed: 10/23/2022] Open
Abstract
Designing and implementing Cystic Echinococcosis control programs require quantitative information about the worm load and the intensity of infection in dog populations in endemic areas. So far no "probe-based" molecular quantification tool has been available for E. granulosus. This study was conducted in order to develop and evaluate a qPCR technique for measuring worm load of E. granulosus in the final host. A species-specific TaqMan probe was designed based on the available sequences in GenBank. The study was conducted in two stages. First, stool samples from an experimentally infected dog were collected in days 7, 14, 21, 28, 35 and 49, and were analyzed by real-time qPCR assay. In the second stage, 600 mg negative stool specimens were manually spiked with 1, 5, 10, 20 and 40 eggs and the specimens were analyzed using real-time qPCR. According to the standard curve analysis, 93% efficiency and coefficients of correlation (Rsq) > 0.991 were documented. Quantitative PCR assays showed an increasing signal of infection during the 7-week course of infection. As revealed by the qPCR results from week 5 onward, signals indicative of egg excretion began and reached maximum on week 7. No qPCR signal from the samples containing 1, 10 and 20 eggs was recorded, however the samples containing 5 and 40 eggs produced signals proportional to the primary DNA. The study presents a molecular tool to quantify the burden of E. granulosus infection in dogs. This tool could be applied for measuring the burden of infection in the definitive hosts in surveillance and control programs.
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Ahmed AB, Ras R, Mahmoud AF, El-Ghazaly E, Widmer G, Dahshan H, Elsohaby I. Prevalence and bacterial isolation from hydatid cysts in dromedary camels ( Camelus dromedarius) slaughtered at Sharkia abattoirs, Egypt. J Parasit Dis 2020; 45:236-243. [PMID: 33746409 DOI: 10.1007/s12639-020-01300-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 10/23/2020] [Indexed: 11/25/2022] Open
Abstract
Cystic echinococcosis (CE) is a severe neglected zoonotic parasitic disease caused by the larval stage of the dog tapeworm, Echinococcus granulosus. The objectives of this study were to determine the prevalence of hydatid cysts in dromedary camels (Camelus dromedarius) at Sharkia province, Egypt and investigate the occurrence of bacteria in hydatid fluid. A total of 6416 dromedary camels slaughtered in five abattoirs in Sharkia province, Egypt during the period from January and December 2018 were investigated for the presence of hydatid cysts. Furthermore, the bacterial species in 10 hydatid fluid isolated from lungs and livers was identified. The current findings revealed that the prevalence of hydatid cysts was 3.7%. Among those, the infection rate in lungs was 78.2%, which was significantly higher than hepatic infections (21.8%). The prevalence of hydatid cysts was the highest in winter (7.4%) and the lowest in spring (1.5%). The most common bacterial species found inside hydatid fluid collected from lungs were Salmonella spp., Staphylococcus spp., Enterococci and Pseudomonas spp. Meanwhile, Staphylococcus spp. were isolated from hepatic hydatid fluid. In conclusion, hydatid cysts infection is prevalent in dromedary camels in Sharkia province, Egypt as well as various aerobic and anaerobic bacterial species were isolated from hydatid fluid from camel lungs and livers.
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Affiliation(s)
| | - Refaat Ras
- Department of Parasitology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Abdallah F Mahmoud
- Food Control Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Emad El-Ghazaly
- Food Control Department, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Giovanni Widmer
- Department of Infectious Disease and Global Health, Cummings School of Veterinary Medicine, Tufts University, North Grafton, MA 01536 USA
| | - Hesham Dahshan
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Ibrahim Elsohaby
- Department of Animal Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
- Department of Health Management, Atlantic Veterinary College, University of Prince Edward Island, 550 University Avenue, Charlottetown, PEI C1A 4P3 Canada
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Bonelli P, Loi F, Cancedda MG, Peruzzu A, Antuofermo E, Pintore E, Piseddu T, Garippa G, Masala G. Bayesian Analysis of Three Methods for Diagnosis of Cystic Echinococcosis in Sheep. Pathogens 2020; 9:pathogens9100796. [PMID: 32992621 PMCID: PMC7600705 DOI: 10.3390/pathogens9100796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 11/16/2022] Open
Abstract
Diagnosis of cystic echinococcosis (CE) in sheep is essentially based on necropsy findings. Clinical symptoms can be easily overlooked, while the use of immunological tests is still not recommended for an intra vitam diagnosis. This study assessed the performances of three post-mortem laboratory methods in the diagnosis of ovine CE. In the absence of a single and accurate test as a gold standard, the results of multiple analytical tests can be combined to estimate diagnostic performance based on a Bayesian statistical approach. For this purpose, livers (n = 77), and lungs (n = 79) were sampled from adult sheep and examined using gross pathology, histopathology and molecular analyses. Data from the three diagnostic methods were analyzed using a Bayesian latent class analysis model to evaluate their diagnostic accuracy in terms of sensitivity (Se), specificity (Sp), positive predictive value (PPV) and negative predictive value (NPV). The gross pathology examination revealed excellent diagnostic capabilities in diagnosing ovine CE with an Se of 99.7 (96.7-99.8), Sp of 97.5 (90.3-99.8), PPV of 97.6 (90.5-100), and NPV of 99.7 (96.5-100). The experimental design used in this work could be implemented as a validation protocol in a quality assurance system.
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Affiliation(s)
- Piero Bonelli
- OIE Reference Laboratory for Echinococcosis, National Reference Center for Echinococcosis (CeNRE), IZS della Sardegna, 07100 Sassari, Italy; (A.P.); (T.P.); (G.M.)
- Correspondence: ; Tel.: +39-079-2892335
| | - Federica Loi
- OEVR-Osservatorio Epidemiologico Veterinario Regionale della Sardegna, IZS della Sardegna, 09123 Cagliari, Italy;
| | - Maria Giovanna Cancedda
- Anatomical Pathology, Histopathology, Animal Genetics Laboratory, IZS della Sardegna, 07100 Sassari, Italy;
| | - Angela Peruzzu
- OIE Reference Laboratory for Echinococcosis, National Reference Center for Echinococcosis (CeNRE), IZS della Sardegna, 07100 Sassari, Italy; (A.P.); (T.P.); (G.M.)
| | - Elisabetta Antuofermo
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (E.A.); (E.P.); (G.G.)
- Mediterranean Center for Disease Control (MCDC), University of Sassari, 07100 Sassari, Italy
| | - Elisabetta Pintore
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (E.A.); (E.P.); (G.G.)
| | - Toni Piseddu
- OIE Reference Laboratory for Echinococcosis, National Reference Center for Echinococcosis (CeNRE), IZS della Sardegna, 07100 Sassari, Italy; (A.P.); (T.P.); (G.M.)
| | - Giovanni Garippa
- Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy; (E.A.); (E.P.); (G.G.)
| | - Giovanna Masala
- OIE Reference Laboratory for Echinococcosis, National Reference Center for Echinococcosis (CeNRE), IZS della Sardegna, 07100 Sassari, Italy; (A.P.); (T.P.); (G.M.)
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Maksimov P, Bergmann H, Wassermann M, Romig T, Gottstein B, Casulli A, Conraths FJ. Species Detection within the Echinococcus granulosus sensu lato Complex by Novel Probe-Based Real-Time PCRs. Pathogens 2020; 9:pathogens9100791. [PMID: 32993077 PMCID: PMC7599986 DOI: 10.3390/pathogens9100791] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/18/2020] [Accepted: 09/23/2020] [Indexed: 12/02/2022] Open
Abstract
Infections with eggs of Echinococcus granulosus sensu lato (s.l.) can cause cystic echinococcosis in intermediate host animals and humans. Upon ingestion of viable eggs, oncospheres hatch from the eggs and subsequently develop into fluid-filled larval cysts, most frequently in the liver or the lungs. The slowly growing cysts progressively interfere with organ function. The risk of infection is determined by the host range of the parasite, its pathogenicity and other epidemiologically relevant parameters, which differ significantly among the five species within the E. granulosus s.l. complex. It is therefore essential to diagnose the correct species within E. granulosus s.l. to help understand specific disease epidemiology and to facilitate effective implementation of control measures. For this purpose, simple, fast and cost-effective typing techniques are needed. We developed quantitative real-time polymerase chain reactions (qPCRs) to target polymorphic regions in the mitochondrial genome of E. granulosus s.l. In a single-step typing approach, we distinguished E. granulosus s.l. members in four epidemiologically relevant subgroups. These were E. granulosus sensu stricto, E. equinus, E. ortleppi and the E. canadensis cluster. The technique also allowed identification and differentiation of these species from other Echinococcus or Taenia taxa for samples isolated from cysts or faeces.
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Affiliation(s)
- Pavlo Maksimov
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Epidemiology, National Reference Centre for Echinococcosis, 17493 Greifswald-Insel Riems, Germany; (H.B.); (F.J.C.)
- Correspondence:
| | - Hannes Bergmann
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Epidemiology, National Reference Centre for Echinococcosis, 17493 Greifswald-Insel Riems, Germany; (H.B.); (F.J.C.)
| | - Marion Wassermann
- Parasitology Unit, University of Hohenheim, Emil-Wolff-Str. 34, 70599 Stuttgart, Germany; (M.W.); (T.R.)
| | - Thomas Romig
- Parasitology Unit, University of Hohenheim, Emil-Wolff-Str. 34, 70599 Stuttgart, Germany; (M.W.); (T.R.)
| | - Bruno Gottstein
- Institute of Parasitology, Vetsuisse Faculty and Faculty of Medicine, University of Bern, 3012 Bern, Switzerland;
| | - Adriano Casulli
- WHO Collaborating Centre for the Epidemiology, Detection and Control of Cystic and Alveolar Echinococcosis, Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy;
- European Reference Laboratory for Parasites, Department of Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
| | - Franz J. Conraths
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Epidemiology, National Reference Centre for Echinococcosis, 17493 Greifswald-Insel Riems, Germany; (H.B.); (F.J.C.)
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Morandi B, Mazzone A, Gori F, Alvarez Rojas CA, Galuppi R, Deplazes P, Poglayen G. New Insights Into the Peculiar World of the Shepherd-Dog Parasites: An Overview From Maremma (Tuscany, Italy). Front Vet Sci 2020; 7:564164. [PMID: 33088834 PMCID: PMC7544896 DOI: 10.3389/fvets.2020.564164] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 08/17/2020] [Indexed: 01/12/2023] Open
Abstract
Several developments have been recently achieved to understand pet-dog parasites and their relationship with hosts; however, parasites' presence and distribution in shepherd-dog have been mainly neglected; this knowledge gap is of critical sanitary importance, as shepherd-dogs could harbor zoonotic helminths including Echinococcus granulosus sensu lato. The related human disease, cystic echinococcosis, is a worldwide neglected disease, with high endemicity in the Mediterranean Basin. To evaluate the presence of E. granulosus and other parasites, a sheep-dog population from the province of Grosseto (Tuscany, Italy) has been investigated. Overall, 648 dog fecal samples obtained from 50 modern sheep farms, having a total of 216 dogs, were collected. Specimens were analyzed using a standardized centrifugal flotation method (specific gravity = 1.3). Taeniid eggs detected were further isolated using a sieving/flotation technique. DNA was isolated from eggs for PCR and sequence analyses for species identification (gene target: 12S rRNA and nad1). Thirty-nine (78%) farms tested positive for at least one parasite species or genus. The most represented intestinal helminths were Toxocara spp. in 64% of farms, followed by Ancylostomatidae (58%), Trichuris vulpis (50%), Capillaria spp. (34%), and taeniids (32%). Sequence analyses confirmed the presence of Taenia hydatigena in seven farms, Taenia (syn. Multiceps) multiceps in five farms, and T. pisiformis in one farm. No DNA was extracted from four previously taeniid egg-positive farms. No amplification of amplicon corresponding to E. granulosus was achieved in the investigated farms. Although not entirely expected, Spearman's test showed a positive correlation between flock size and the number of dogs per farm (ρ = 0.588, P < 0.001). The quantitative analysis reported that the home slaughter practice was affected neither by the flock size nor by the number of dogs per farm. The probability to diagnose farms positive for taeniids had been increased by about 35% for each dog unit increase [odds ratio (OR) = 1.35, P = 0.012]. In conclusion, the wide distribution of T. hydatigena and T. multiceps detected in the present study clearly reveals that dogs have still access to raw offal, a major risk for the transmission of E. granulosus. Home slaughtering is an unavoidable practice, and more efforts must be undertaken by the public health system to prevent and control potential zoonotic taeniids.
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Affiliation(s)
- Benedetto Morandi
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy
| | - Angelica Mazzone
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy
| | - Francesca Gori
- Institute of Parasitology, University of Zurich, Zurich, Switzerland
| | | | - Roberta Galuppi
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy
| | - Peter Deplazes
- Institute of Parasitology, University of Zurich, Zurich, Switzerland
| | - Giovanni Poglayen
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy
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Toribio L, Santivanez S, Scott AL, Enriquez R, Sedano C, Soto-Becerra P, Garcia HH, Shiff CJ. Diagnostic urinary cfDNA detected in human cystic echinococcosis. Mol Biochem Parasitol 2020; 239:111314. [PMID: 32866606 PMCID: PMC8801304 DOI: 10.1016/j.molbiopara.2020.111314] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/31/2020] [Accepted: 08/01/2020] [Indexed: 02/06/2023]
Abstract
Cystic echinococcosis (CE) is a major neglected tropical zoonotic disease caused by the tissue-dwelling larval stage of the cestode parasite Echinococcus granulosus. For individuals suspected of CE, the diagnostic standard is imaging using ultrasonography, X rays, or computed tomography. These resource-demanding and expensive procedures are rarely available in endemic rural areas where CE is most prevalent. There is a critical need for a new approach to identify CE patients so that they can be managed early in the course of their infection. This study reports on the results of a diagnostic approach that identifies E. granulosus-derived cell-free DNA (cfDNA) in the urine of CE patients. Utilizing PCR to amplify a fragment of a major tandem repeat element found in E. granulosus nuclear DNA, urine samples from all seven imaging-confirmed CE patients who harbored active liver cysts were positive. In addition, the urine samples from 2/4 patients who presented with non-viable/calcified liver cysts were also PCR positive for the repeat fragment. To our knowledge, this is the first report of using parasite cfDNA from urine to diagnose CE. This approach provides an easy to implement and cost-effective method to survey for the prevalence of E. granulosus in humans populations.
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Affiliation(s)
- Luz Toribio
- Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Saul Santivanez
- Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru; Cysticercosis Unit, Instituto Nacional de Ciencias Neurologicas, Lima, Peru
| | - Alan L Scott
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Raul Enriquez
- Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Cesar Sedano
- Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Percy Soto-Becerra
- Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Hector H Garcia
- Center for Global Health, Universidad Peruana Cayetano Heredia, Lima, Peru; W. Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Clive J Shiff
- W. Harry Feinstone Department of Molecular Microbiology and Immunology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States.
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Tamarozzi F, Legnardi M, Fittipaldo A, Drigo M, Cassini R. Epidemiological distribution of Echinococcus granulosus s.l. infection in human and domestic animal hosts in European Mediterranean and Balkan countries: A systematic review. PLoS Negl Trop Dis 2020; 14:e0008519. [PMID: 32776936 PMCID: PMC7440662 DOI: 10.1371/journal.pntd.0008519] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 08/20/2020] [Accepted: 06/25/2020] [Indexed: 12/22/2022] Open
Abstract
Cystic echinococcosis (CE) is a neglected zoonosis caused by infection with the cestode Echinococcus granulosus sensu lato. We carried out a systematic literature review on E. granulosus s.l. human and animal (cattle, sheep, dog) infection in European Mediterranean and Balkan countries in 2000–2019, to provide a picture of its recent epidemiology in this endemic area. MEDLINE, EMBASE, Scopus, Google Scholar and Open Grey databases were searched. Included cases were: i) for humans, data from hospital records and imaging studies; ii) for dogs, data from necropsy and coprological studies; iii) for ruminants, cases based on slaughter inspection. The NUTS (Nomenclature of Territorial Units for Statistics) classification was used to categorize extracted data in epidemiological units, defined as data referred to one NUTS2 (basic region) in one year time. Data were then aggregated to NUTS1 level (major regions), calculating the average incidence value of included epidemiological units. For prevalence studies covering different epidemiological units, the pooled prevalence was estimated. Data were extracted from 79 publications, 25 on human infection (covering 437 epidemiological units), and 54 on animal infection (52 epidemiological units for cattle, 35 for sheep and 25 for dogs). At NUTS1 level, average annual incidence rates of human CE ranged from 0.10–7.74/100,000; pooled prevalence values ranged from 0.003–64.09% in cattle, 0.004–68.73% in sheep, and 0–31.86% in dogs. Southern and insular Italy, central Spain, Romania and Bulgaria reported the highest values. Bovine data showed a more similar pattern to human data compared to sheep and dogs. Limitation of evidence included the paucity of human prevalence studies, data heterogeneity, and the patchy geographical coverage, with lack of data especially for the Balkans. Our results confirm Italy, Spain, and Eastern Europe being the most affected areas, but data are extremely heterogeneous, geographical coverage very patchy, and human prevalence studies extremely scant. Results also highlight the notorious problem of underreporting of E. granulosus s.l. infection in both humans and animals. Cystic echinococcosis (CE) is a neglected zoonosis caused by infection with the parasite Echinococcus granulosus sensu lato, naturally transmitted between canids and livestock; CE in humans can be a serious condition. In endemic areas, CE is responsible for significant health and economic losses, but its real burden is difficult to estimate. E. granulosus s.l. is especially present in areas where livestock breeding is practiced, including European Mediterranean and Balkan countries. We carried out a systematic literature review on the epidemiology of E. granulosus s.l. human and animal infection in this area in 2000–2019. Data were extracted from 79 publications, and referred to Nomenclature of Territorial Units for Statistics (NUTS) levels per year. Average annual incidence rates of human CE ranged from 0.10–7.74/100,000; pooled prevalences ranged from 0.003–64.09% in cattle, 0.004–68.73% in sheep, and 0–31.86% in dogs. Bovine data showed a more similar pattern to human data compared to sheep and dogs. Our results confirm that Italy, Spain, and Eastern Europe are the most affected areas, but data are extremely heterogeneous, geographical coverage very patchy, and human prevalence studies extremely scant. Results also highlight the well-known problem of underreporting of E. granulosus s.l. infection in both humans and animals.
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Affiliation(s)
- Francesca Tamarozzi
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar (Verona), Italy
| | - Matteo Legnardi
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro (Padova), Italy
| | - Andrea Fittipaldo
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar (Verona), Italy
| | - Michele Drigo
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro (Padova), Italy
| | - Rudi Cassini
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro (Padova), Italy
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Hughes EC, Anderson NE. Zoonotic Pathogens of Dromedary Camels in Kenya: A Systematised Review. Vet Sci 2020; 7:vetsci7030103. [PMID: 32764264 PMCID: PMC7559378 DOI: 10.3390/vetsci7030103] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 06/21/2020] [Accepted: 07/01/2020] [Indexed: 01/26/2023] Open
Abstract
Kenya is home to Africa’s third largest population of dromedary camels, and production at commercial and local levels are increasingly important. In pastoral and nomadic communities in the arid and semi-arid lands (ASALs), camels play a vital role in food security, while commercial milk production and formalized export markets are rapidly emerging as camel populations expand into non-traditional areas. Until recently, little focus was placed on camels as hosts of zoonotic disease, but the emergence of Middle Eastern respiratory coronavirus (MERS-CoV) in 2012, and the discovery of exposure to the virus in Kenyan camels, highlighted the need for further understanding of this area. This systematised review utilised a robust search strategy to assess the occurrence of camel-associated zoonoses in Kenya and to evaluate the quality of the published literature. Seventy-four studies were identified, covering sixteen pathogens, with an increasing number of good quality studies in recent years. Despite this, the area remains under-researched and there is a lack of robust, high-quality research. Trypanosome spp., Echinococcus granulosus and Brucella spp. appeared most frequently in the literature. Pathogens with the highest reported prevalence were MERS-CoV (0–100%), Echinococcus granulosa (7–60%) and Rift Valley fever virus (7–57%). Exposure to Brucella spp., Coxiella burnetii and Crimean-Congo haemorrhagic fever virus showed higher levels in camel or camel-associated vectors than other livestock species, although brucellosis was the only disease for which there was robust evidence linking camel and human exposure. Zoonotic agents with less severe human health outcomes, such as Dermatophilosus congolensis and contagious ecthyma, were also represented in the literature. This review provides an important summary of the scope and quality of current knowledge. It demonstrates that further research, and improved adherence to robust study design and reporting are essential if the zoonotic risk from camels in Kenya, and elsewhere, is to be better understood.
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Affiliation(s)
- Ellen Clare Hughes
- The Royal (Dick) School of Veterinary Studies and the Roslin Institute, University of Edinburgh, Roslin EH25 9RG, UK;
- Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Henry Wellcome Building, Garscube Campus, Glasgow G61 1QH, UK
- Correspondence:
| | - Neil Euan Anderson
- The Royal (Dick) School of Veterinary Studies and the Roslin Institute, University of Edinburgh, Roslin EH25 9RG, UK;
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Dell B, Newman SJ, Purple K, Miller B, Ramsay E, Donnell R, Gerhold RW. Retrospective investigation of Echinococcus canadensis emergence in translocated elk (Cervus canadensis) in Tennessee, USA, and examination of canid definitive hosts. Parasit Vectors 2020; 13:330. [PMID: 32605660 PMCID: PMC7325358 DOI: 10.1186/s13071-020-04198-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Accepted: 06/18/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Few reports of Echinococcus spp. have been described in the USA; however, the geographical distribution of Echinococcus spp. in wild hosts is increasing consequent to human activities. In the early 2000's, 253 elk (Cervus canadensis) originating from Alberta, Canada were released into the Great Smoky Mountains National Park and North Cumberland Wildlife Management Area in an effort to re-establish their historical range. METHODS We investigated the prevalence of Echinococcus spp. in re-established elk populations in the North Cumberland Wildlife Management Area and the Great Smoky Mountains National Park via a retrospective analysis of banked elk tissues and helminth examinations on intestinal contents from coyotes (Canis latrans) from the North Cumberland Wildlife Management Area. RESULTS Four elk were PCR and sequence positive for E. canadensis. Each sequence had 98% or greater coverage and identity to multiple E. canadensis genotypes on GenBank. Adult Echinococcus spp. were not detected in any of the coyotes examined in this study. CONCLUSIONS Continued surveillance of this disease in susceptible species in these areas is warranted, and these data further underscore the risk of zoonotic pathogen introduction secondary to wildlife translocation.
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Affiliation(s)
- BreeAnna Dell
- Department of Biomedical and Diagnostic Sciences, University of Tennessee College of Veterinary Medicine, 2407 River Drive, Knoxville, TN 37996 USA
| | - Shelley J. Newman
- Long Island University College of Veterinary Medicine, 720 Northern Boulevard, Brookville, NY 11548 USA
| | - Kathryn Purple
- Department of Biology, Lincoln Memorial University, 6965 Cumberland Gap Parkway, Harrogate, TN 37752 USA
| | - Brad Miller
- Tennessee Wildlife Resources Agency, 3030 Wildlife Way, Morristown, TN 37814 USA
| | - Edward Ramsay
- Department of Small Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, 2407 River Drive, Knoxville, TN 37996 USA
| | - Robert Donnell
- Department of Biomedical and Diagnostic Sciences, University of Tennessee College of Veterinary Medicine, 2407 River Drive, Knoxville, TN 37996 USA
| | - Richard W. Gerhold
- Department of Biomedical and Diagnostic Sciences, University of Tennessee College of Veterinary Medicine, 2407 River Drive, Knoxville, TN 37996 USA
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de la Fuente-Aguilar V, Beneitez-Mascaraque P, Bergua-Arroyo S, Fernández-Riesgo M, Camón-García I, Cruza-Aguilera I, Ugarte-Yáñez K, Ramia JM. Hydatidosis and the duodenum: A systematic review of the literature. World J Meta-Anal 2020; 8:265-274. [DOI: 10.13105/wjma.v8.i3.265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/15/2020] [Accepted: 06/13/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Injury to the duodenum (fistula formation, compression, or other complications) by a hydatid cyst (HC) is an exceptional complication.
AIM To perform a systematic review of the literature on the fistulization of HC in the duodenum.
METHODS Following PRISMA guidelines, a search for HC with duodenal involvement was carried out in the databases of PubMed, SCielo and EMBASE without time limits.
RESULTS Fourteen patients were identified, seven men and seven women, with a mean age of 53.14 years (SD = 17.65, range: 28-78). Three out of the 14 (21%) had HC relapse. The most frequent clinical manifestations were abdominal pain and nausea and/or vomiting. Various imaging studies were performed in almost all cases, the most commonly used being abdominal computed tomography (10/14, 71%). A range of surgical techniques were reported, most frequently HC drainage (41%) and enucleations (16%). Ten of the 14 patients had no complications and one patient died. The follow-up period and recurrences could not be determined.
CONCLUSION The most frequent symptoms were abdominal pain, nausea and vomiting. Computed tomography was the most used diagnostic imaging technique, and HC drainage and fistula closure via laparotomy was the most frequent treatment. However, all diagnostic and therapeutic options for HC fistulizing the duodenum had a low level of evidence.
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Affiliation(s)
| | | | | | | | - Irene Camón-García
- Faculty of Medicine, Universidad of Alcalá, Alcalá de Henares 28801, Spain
| | | | | | - José M Ramia
- Faculty of Medicine, Universidad of Alcalá, Alcalá de Henares 28801, Spain
- Servicio de Cirugía General y del Aparato Digestivo, Hospital General Universitario de Alicante and Institute for Health and Biomedical Research (ISABIAL) Alicante 03010, Spain
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Mirbadie SR, Zivdari M, Kalani H, Vafaei MR, Izadi S, Jabalameli Z, Mohammadi M, Yadagiri G, Heydarian P, Mirzaei F, Mohaghegh MA. Molecular identification of Echinococcus granulosus sensu lato by mitochondrial COX1 and SSU-rDNA markers in dogs in the west of Iran. GENE REPORTS 2020. [DOI: 10.1016/j.genrep.2020.100616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kurt A, Avcioglu H, Guven E, Balkaya I, Oral A, Kirman R, Bia MM, Akyuz M. Molecular Characterization of Echinococcus multilocularis and Echinococcus granulosus from Cysts and Formalin-Fixed Paraffin-Embedded Tissue Samples of Human Isolates in Northeastern Turkey. Vector Borne Zoonotic Dis 2020; 20:593-602. [PMID: 32251614 DOI: 10.1089/vbz.2019.2594] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Erzurum province of Turkey is known to be highly endemic for alveolar echinococcosis (AE) and cystic echinococcosis (CE). In this study, we confirmed Echinococcus multilocularis cases, searched genetic variations of the isolates, and-for the first time-determined the genotypes of Echinococcus granulosus s.l. infecting humans in the province. A total of 5 alveolar and 106 hydatid cysts as well as 23 formalin-fixed paraffin-embedded (FFPE) samples that were diagnosed as AE were collected from hospitals between 2015 and 2017. Partial sequences of two mitochondrial genes were amplified to detect E. multilocularis and E. granulosus sensu lato with conventional polymerase chain reactions (PCRs) and genotypes confirmed by sequencing. PCR amplification of a partial 12S rRNA gene on an alveolar cyst and FFPE tissue samples yielded the expected bp in 5 cysts and 19 of 23 FFPE samples; all Erzurum E. multilocularis isolates were confirmed by sequencing. Phylogenetic analysis of the isolates indicated that some of them were identical to European isolates, whereas some of them were identical to Asian isolates. Off all hydatid cyst samples, 101 (95.2%) yielded the expected bp (94 with 12S rRNA-PCR and 7 with COI-PCR). Sequence analysis showed that 98 (97%) of them corresponded to the G1 genotype, whereas 3 (3%) corresponded to the G3 genotype. Results of the study emphasize that E. multilocularis isolates of Erzurum, based on short sequencing, are similar to both European and Asian isolates, and the G1 genotype of E. granulosus is the main causative agent of human CE in Erzurum.
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Affiliation(s)
- Ali Kurt
- Department of Pathology, Erzurum Regional Education and Research Hospital, Erzurum, Turkey
| | - Hamza Avcioglu
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Esin Guven
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Ibrahim Balkaya
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Akgün Oral
- Department of Pediatric Surgery, Dr. Behçet Uz Children's Hospital, Saglik Bilimleri University, Izmir, Turkey
| | - Ridvan Kirman
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Mohammed Mebarek Bia
- Department of Parasitology, Parasite Research Center and Parasite Resource Bank, School of Medicine, Chungbuk National University, Cheongju, Korea
| | - Muzaffer Akyuz
- Department of Parasitology, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
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Arezo M, Mujica G, Uchiumi L, Santillán G, Herrero E, Labanchi JL, Araya D, Salvitti JC, Cabrera M, Grizmado C, Calabro A, Talmon G, Sepulveda L, Galvan JM, Volpe M, Bastin V, Seleiman M, Panomarenko O, Tissot H, Sobrino M, Crowley P, Daffner J, Larrieu E. Identification of potential 'hot spots' of cystic echinococcosis transmission in the province of Río Negro, Argentina. Acta Trop 2020; 204:105341. [PMID: 31954134 DOI: 10.1016/j.actatropica.2020.105341] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 01/07/2020] [Accepted: 01/13/2020] [Indexed: 11/18/2022]
Abstract
Cystic echinococcosis (CE) is a parasitic zoonosis caused by Echinococcus granulosus. The control program of CE of Rio Negro province, Argentina, involves annual surveillance using ultrasound (US) screening in school children, and five-year cross-sectional surveys to detect livestock farms with parasitized dogs by coproELISA with confirmation tests (Western Blot or PCR). Control program is based on deworming of dogs with praziquantel and the aim is to identify areas at risk of Cystic echinococcosis transmission to humans, using all available data sources. The information was spatially distributed in 13 program areas and, at a smaller geographical scale, in 80 Primary Health Care Centers. CoproELISA surveys involved three randomized sampling periods (2003-05, 2009-10, 2017-18), with 1790 canine fecal samples. The US surveys were conducted in 2003-08, 2009-16 and 2017-18 in 34,515 children. Heat maps were created at the smallest geographic scale with QGIS 3.4.6. For the consecutive sampling periods, prevalence of positive canine fecal samples from livestock farms were 14.7, 12.1 and 7.8%, respectively, and children prevalence was 0.4, 0.2 and 0.1%, respectively. The study has been developed on a scale according to which the temporal-spatial distribution of CE allows to adjust control strategies in those areas of potential transmission of the zoonosis to humans.
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Affiliation(s)
- Marcos Arezo
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | | | | | - Graciela Santillán
- Instituto Nacional de Microbiología "ANLIS-MALBRAN", Buenos Aires, Argentina
| | - Eduardo Herrero
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | - Jose Luis Labanchi
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina; Carrera de Veterinaria, Universidad Nacional de Río Negro, Choele Choel, Argentina
| | - Daniel Araya
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | | | - Marta Cabrera
- Instituto Nacional de Microbiología "ANLIS-MALBRAN", Buenos Aires, Argentina
| | | | - Arnoldo Calabro
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | - Gabriel Talmon
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | - Luis Sepulveda
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | | | - Marcela Volpe
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | - Vanesa Bastin
- Instituto Nacional de Microbiología "ANLIS-MALBRAN", Buenos Aires, Argentina
| | - Marcos Seleiman
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | | | - Hebe Tissot
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | - Mariano Sobrino
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina
| | - Pablo Crowley
- Ministerio de Salud, Provincia de Río Negro, Viedma, Argentina; Carrera de Veterinaria, Universidad Nacional de Río Negro, Choele Choel, Argentina
| | - Jose Daffner
- Carrera de Veterinaria, Universidad Nacional de Río Negro, Choele Choel, Argentina
| | - Edmundo Larrieu
- Carrera de Veterinaria, Universidad Nacional de Río Negro, Choele Choel, Argentina; Facultad de Ciencias Veterinarias, Universidad Nacional de La Pampa, General Pico, Argentina.
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Biranvand E, Rafiei A, Beiromvand M, Amari A, Bahraini A, Motamedfar A. Cytokine profiles in peripheral blood mononuclear cells from patients with cystic echinococcosis. Comp Immunol Microbiol Infect Dis 2020; 70:101469. [PMID: 32199179 DOI: 10.1016/j.cimid.2020.101469] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 02/26/2020] [Accepted: 02/28/2020] [Indexed: 01/28/2023]
Abstract
INTRODUCTION Cystic echinococcosis (CE) is a chronic zoonotic disease caused by the larval stage of Echinococcus granulosus (E. granulosus), which affects domestic and wild carnivores as the definitive host and ungulates as intermediate hosts. In intermediate hosts, both Th1 and Th2 cells are involved in the immune responses to an echinoccocal infection. This study aimed to investigate production of IL-4, IL-10, and IFN-γ cytokines in peripheral blood mononuclear cells (PBMCs) of CE patients before and after surgical treatment. METHODS To evaluate cytokine production in response to E. granulosus antigens, we investigated IL-4, IL-10, and IFN-γ production in PBMCs of 20 CE patients in response to hydatid cyst fluid antigen (HCF-Ag) before and after surgical treatment using ELISA. RESULTS The mean IL-4 production from HCF-Ag stimulated PBMCs was significantly decreased (p < 0.05), while IFN-γ was significantly increased in HCF-Ag stimulated PBMCs in patients after surgery (p = 0.005). Furthermore, our results showed that there is no significant difference between IL-10 production in patients before and after treatment (p = 0.562). CONCLUSIONS Our data Indicated production of IL-4 in cultured PBMCs of CE patients stimulated with HCF-Ag was decreased significantly. While, production of IFN-γ was increased significantly in responses to HCF Ag after surgery. We concluded that the evaluation of IL-4 and IFN-γ in HCF-Ag stimulated PBMCs of CE patients should be considered as a useful marker in the follow up of patients with cystic echinococcosis.
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Affiliation(s)
- Elaheh Biranvand
- Department of Parasitology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Abdollah Rafiei
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Molouk Beiromvand
- Department of Parasitology, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Afshin Amari
- Cellular and Molecular Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Immunology, School of Medicine, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran.
| | - Amin Bahraini
- Department of Surgery, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Azim Motamedfar
- Department of Radiology, Golestan Hospital, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Toaleb NI, Helmy MS, Shanawany EEE, Abdel-Rahman EH. A simple and efficient purification method of native immunoreactive antigen for diagnosis of camel hydatidosis. Vet World 2020; 13:141-146. [PMID: 32158164 PMCID: PMC7020131 DOI: 10.14202/vetworld.2020.141-146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 12/09/2019] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Cystic echinococcosis (CE), a zoonotic disease that affects animal and human health, is of increasing economic importance due to high morbidity rates and high economic losses in the livestock industry. AIM The present study was conducted to purify the antigen from hydatid cyst fluid (HCF) with high diagnostic efficacy of camel hydatidosis using indirect enzyme-linked immunosorbent assay (ELISA). MATERIALS AND METHODS The HCF antigen was purified using Sephacryl S-300 column chromatography. Characterization of fractions was performed using reducing and non-reducing sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blot analysis. Further, antibodies against Echinococcus granulosus cysts in camel serum were detected using indirect ELISA. RESULTS The purification process resulted in three fractions of antigens: FI, FII, and FIII. Indirect ELISA showed that higher diagnostic efficacy was observed in FI than in FII and FIII. Indirect ELISA, in which FI was utilized, showed 88% sensitivity and 91.7% specificity. Non-reducing SDS-PAGE showed that FI had two bands of molecular weights 120 and 60 kDa. Western blot analysis of FI demonstrated that 60, 38, and 22 kDa were antigenic bands when reacted with naturally infected camel sera with E. granulosus cysts. Using indirect ELISA, F1 recorded an infection percentage of 81.7% in randomly collected camel serum samples. CONCLUSION FI is a promising antigen for accurate diagnosis of camel CE using indirect ELISA.
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Affiliation(s)
- Nagwa I. Toaleb
- Department of Parasitology and Animal Diseases, National Research Centre, El Buhouth St., Dokki, Cairo, Egypt
| | - Mohamed S. Helmy
- Department of Molecular Biology, National Research Centre, El Buhouth St., Dokki, Cairo, Egypt
| | - Eman E. El Shanawany
- Department of Parasitology and Animal Diseases, National Research Centre, El Buhouth St., Dokki, Cairo, Egypt
| | - Eman H. Abdel-Rahman
- Department of Parasitology and Animal Diseases, National Research Centre, El Buhouth St., Dokki, Cairo, Egypt
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