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Nocerino M, Pepe P, Ciccone E, Maurelli MP, Bosco A, Boué F, Umhang G, Lahmar S, Said Y, Sotiraki S, Ligda P, Laatamna A, Reghaissia N, Saralli G, Musella V, Alterisio MC, Piegari G, Rinaldi L. Epidemiological update of cystic echinococcosis in livestock and assessment of practices related to its control in the Mediterranean area. Acta Trop 2024; 255:107240. [PMID: 38705342 DOI: 10.1016/j.actatropica.2024.107240] [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: 01/30/2024] [Revised: 04/04/2024] [Accepted: 05/03/2024] [Indexed: 05/07/2024]
Abstract
Cystic echinococcosis (CE), caused by the tapeworm Echinococcus granulosus, is a zoonotic parasitic disease that still represents a serious threat to human and animal health worldwide. The Mediterranean basin is recognized as one of the major hotspots of CE due to several factors, including the presence of diverse intermediate host species as well as socio-economic and cultural conditions of local communities. This study aims to take a closer look at epidemiological data on CE in the Mediterranean area and assess the knowledge attitudes and practices of shepherds towards this disease in four countries (Algeria, Greece, Italy and Tunisia), highly endemic for CE, with the final goal of identifying highly endemic risk areas and practices in use which might potentially allow the persistence of E. granulosus infection in these areas. To update the epidemiological scenario of CE in Mediterranean areas, a comprehensive review of peer-reviewed literature on CE prevalence data published during the 2017-2023 period was carried out and, through a geographical information system (GIS), a map displaying the current CE distribution in the Mediterranean area was generated. In addition, a questionnaire survey was conducted through in-depth interviews of the farmers to collect information on their management system as well as knowledge attitudes and practices towards CE. From the farmer-participatory survey some risky practices emerged including the non-regular deworming of dogs or the use of ineffective drugs or dosing, as well as the provision of uncooked animal viscera to dogs. Finally, lower levels of knowledge and awareness of the disease was observed among farmers from North Africa compared with those of European countries. In conclusion, the results obtained highlight that CE is still a very serious problem in Mediterranean areas and increased efforts are needed to promote awareness among farmers and to turn research results into policy in order to reduce the spread of this disease, according to the One Health perspective.
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Affiliation(s)
- Martina Nocerino
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, Naples 80137, Italy
| | - Paola Pepe
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, Naples 80137, Italy.
| | - Elena Ciccone
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, Naples 80137, Italy; Regional Reference Centre for Animal Health (CRESAN), Campania Region, Italy
| | - Maria Paola Maurelli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, Naples 80137, Italy; Regional Reference Centre for Animal Health (CRESAN), Campania Region, Italy
| | - Antonio Bosco
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, Naples 80137, Italy; Regional Reference Centre for Animal Health (CRESAN), Campania Region, Italy
| | - Franck Boué
- ANSES, Nancy Laboratory for Rabies and Wildlife Diseases, Technopôle agricole et vétérinaire, BP 40009, Malzéville 54220, France
| | - Gérald Umhang
- ANSES, Nancy Laboratory for Rabies and Wildlife Diseases, Technopôle agricole et vétérinaire, BP 40009, Malzéville 54220, France
| | - Samia Lahmar
- Laboratoire de Parasitologie, École Nationale de Médecine Vétérinaire, University of Manouba, 2020 Sidi Thabet, Tunisia
| | - Yousra Said
- Laboratoire de Parasitologie, École Nationale de Médecine Vétérinaire, University of Manouba, 2020 Sidi Thabet, Tunisia
| | - Smaragda Sotiraki
- Veterinary Research Institute, Hellenic Agricultural Organisation-Demeter, Thessaloniki 57001, Greece
| | - Panagiota Ligda
- Veterinary Research Institute, Hellenic Agricultural Organisation-Demeter, Thessaloniki 57001, Greece
| | - AbdElkarim Laatamna
- Laboratory of Exploration and Valorization of Steppic Ecosystems, Faculty of Nature and Life Sciences, University of Djelfa, Moudjbara Road, BP, Djelfa 3117, Algeria
| | - Nassiba Reghaissia
- Institute of Agronomic and Veterinary Sciences, University of Souk Ahras, Annaba Road, Souk Ahras 41000, Algeria
| | - Giorgio Saralli
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana M. Aleandri, Rome, Italy
| | - Vincenzo Musella
- Department of Health Science, University "Magna Græcia" of Catanzaro, Viale Europa, Catanzaro 88100, Italy
| | - Maria Chiara Alterisio
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, Naples 80137, Italy
| | - Giuseppe Piegari
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, Naples 80137, Italy
| | - Laura Rinaldi
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, Naples 80137, Italy; Regional Reference Centre for Animal Health (CRESAN), Campania Region, Italy
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Poggio TV, Chacon T, Larrieu E. Successful control of Echinococcosis in Argentina and Chile through a One Health approach, including vaccination of the sheep intermediate host. Parasitology 2024:1-5. [PMID: 38699823 DOI: 10.1017/s0031182024000519] [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: 05/05/2024]
Abstract
Cystic echinococcosis control in South American countries requires a comprehensive integrative ‘One Health’ approach. While insular nations have seen successful in their elimination programmes, South American countries face persistent challenges in hostile environments, with Echinococcus granulosus s.l., posing a significant public health concern. Vaccination of intermediate hosts has demonstrated the efficacy of the EG95 vaccine in reducing transmission rates. For example, since 2009, Rio Negro Province in Argentina has added, with marked success, the EG95 vaccine to the control programme, supplementing dog deworming. The Aysen Region of Chile has also reported encouraging preliminary results in reducing cyst prevalence in vaccinated sheep after 3 years of vaccination. The challenges in aligning control strategies with socio-cultural factors, especially in indigenous communities, underlines the need for context-specific strategies. The Rio Negro programme demonstrated commendable compliance, underlining the importance of community engagement in achieving lasting success. The most promising strategies for effective echinococcosis control involved dog deworming and the routine vaccination of sheep and/or goats, underscoring the importance of sustained implementation until all grazing animals have been replaced. For lasting success, these interventions need to be combined with a robust surveillance system.
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Affiliation(s)
- Thelma Veronica Poggio
- Instituto de Ciencia y Tecnología "César Milstein"- Fundación Cassara - CONICET, Buenos Aires, Argentina
| | - Tomas Chacon
- Servicio Agrícola y Ganadero, Dirección Regional Aysén, Aysen, Chile
| | - Edmundo Larrieu
- Universidad Nacional de La Pampa, Facultad de Ciencias Veterinarias, General Pico, Argentina
- Universidad Nacional de Rio Negro, Escuela de Veterinaria, Choele Choel, Argentina
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Gholami Koohestan M, Saberi R, Daryani A, Sarvi S, Sharifdini M, Anvari D, Shariatzadeh SA, Hosseini SA, Gholami S. Identification and genotyping of Echinococcus granulosus from human clinical samples in Guilan province, north of Iran. Parasite Epidemiol Control 2024; 25:e00353. [PMID: 38699631 PMCID: PMC11063601 DOI: 10.1016/j.parepi.2024.e00353] [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: 08/15/2023] [Revised: 02/27/2024] [Accepted: 04/21/2024] [Indexed: 05/05/2024] Open
Abstract
Cystic echinococcosis (CE) is a significant health problem in both human and veterinary medicine. It is caused by the tapeworm Echinococcus granulosus (E. granulosus). The objective of this study was to investigate molecular diversity of E. granulosus from the paraffin-embedded human (FFPE) tissue samples using sequencing of mitochondrial genes. Thirty-five FFPE tissue samples were collected from different regions of Guilan province, north of Iran. Demographic data were recorded using a questionnaire. Five sections (1 mm) of the tissue were prepared and deparaffined using xylene and ethanol methods. Molecular analysis was performed using the Nad1 and Cox1 genes using PCR and DNA sequencing. Totally, 25 cases (71.43%) were women and 10 cases (28.57%) were men. The most affected age group was 21-30 yr old. The most of cysts were isolated from the liver (n = 19; 54.29%) and others in the lung (n = 16; 45.71%). The Cox1 and Nad1 genes were successfully amplified in 16 (45.71%) and 12 (34.28%) DNA samples from FFPE tissue. Sequencing analysis revealed that all samples were E. granulosus sensu stricto complex (G1 and G3). In this study, E. granulosus sensu stricto complex G1 and G3 were identified in human hydatid cysts and showed the presence of sheep/dog cycle in human infection. This finding confirmed and completed previous studies on the geospatial distribution of E. granulosus sensu stricto complex G1 and G3 in the southern and coastal areas of the Caspian Sea region.
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Affiliation(s)
- Masoumeh Gholami Koohestan
- Student Research Committee, Mazandaran University of Medical Science, Sari, Iran
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Reza Saberi
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ahmad Daryani
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Shahabbedin Sarvi
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Meysam Sharifdini
- Department of Medical Parasitology and Mycology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
| | - Davood Anvari
- School of Medicine, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Seyyed Ali Shariatzadeh
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyed Abdollah Hosseini
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
| | - Shirzad Gholami
- Toxoplasmosis Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran
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Tian T, Miao L, Wang W, Zhou X. Global, Regional and National Burden of Human Cystic Echinococcosis from 1990 to 2019: A Systematic Analysis for the Global Burden of Disease Study 2019. Trop Med Infect Dis 2024; 9:87. [PMID: 38668548 PMCID: PMC11054543 DOI: 10.3390/tropicalmed9040087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/21/2024] [Accepted: 04/02/2024] [Indexed: 04/29/2024] Open
Abstract
BACKGROUND Cystic echinococcosis (CE) is a neglected tropical parasitic disease that poses huge disease, social and economic burdens worldwide; however, there has been little knowledge on the global morbidity, mortality and disability-adjusted life years (DALYs) of CE until now. This study aimed to collect the most up-to-date data about the global, regional and national disease burden due to CE from 1990 to 2019 and to project trends in the next 10 years. METHODS We measured the global, regional and national morbidity, mortality and DALYs of CE from 1990 to 2019 based on the Global Burden of Disease Study 2019 (GBD 2019) data, and we examined the correlation between socioeconomic development levels and the disease burden of CE. In addition, the disease burden due to CE was projected from 2020 to 2030. RESULTS The age-standardized incidence rate (ASIR) of CE reduced from 2.65/105 [95% UI: (1.87/105 to 3.7/105)] in 1990 to 2.6/105 [95% UI: (1.72/105 to 3.79/105)] in 2019 (EAPC = -0.18%). The number of deaths, DALYs, age-standardized mortality rate (ASMR) and age-standardized DALY rate due to CE all showed a tendency to decline from 1990 to 2019. A higher disease burden of CE was measured in women than in men in 2019. There was a significant difference in the ASMR of CE by region according to the socio-demographic index (SDI), and lower burdens of CE were estimated in high-SDI regions. The global ASIR of CE is projected to decline from 2020 to 2030; however, the ASMR and age-standardized DALY rate are projected to rise. CONCLUSIONS The global burden of CE remains high, and it is recommended that more health resources are allocated to low-SDI regions, women and the elderly aged 55 to 65 years to reduce the disease burden of CE.
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Affiliation(s)
- Tian Tian
- 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 Health Commission Key Laboratory of Parasite and Vector Biology, National Center for International Research on Tropical Diseases, National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, Shanghai 200025, China;
| | - Liyuan Miao
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China;
- One Health Center, Shanghai Jiao Tong University—The University of Edinburgh, Shanghai 200025, China
| | - Wei Wang
- National Health Commission Key Laboratory of Parasitic Disease Control and Prevention, Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology, Jiangsu Institute of Parasitic Diseases, Wuxi 214064, China;
| | - Xiaonong Zhou
- 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 Health Commission Key Laboratory of Parasite and Vector Biology, National Center for International Research on Tropical Diseases, National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, Shanghai 200025, China;
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China;
- One Health Center, Shanghai Jiao Tong University—The University of Edinburgh, Shanghai 200025, China
- Hainan Center for Tropical Diseases Research, Haikou 571199, China
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Hosseinzade S, Nourani H, Kazemi Mehrjerdi H, Lotfalizadeh N, Borji H. The effect of hydatid cyst protoscolex somatic antigens on full-thickness skin wound healing in mouse. Skin Res Technol 2024; 30:e13685. [PMID: 38558086 PMCID: PMC10982679 DOI: 10.1111/srt.13685] [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: 01/13/2024] [Accepted: 03/18/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Wound healing has evolved in recent years, resulting in diverse therapeutic options. OBJECTIVE This study evaluated the effects of the somatic antigen of the hydatid cyst protoscolex on wound healing in mice with full-thickness skin wounds. METHODS Fifty-four adult mice, weighing 25 ± 5 g and approximately 60 days old, were divided into three groups (A, B, and C), each further divided into three subgroups. Subgroups A1, A2, and A3 were assigned negative controls. B1, B2, and B3 received hydatid cyst somatic antigen tests at 10 µg/SC, whereas C1, C2, and C3 received somatic antigen tests at 20 µg/SC. Under general anesthesia, a wound biopsy puncture of 9.8 mm in diameter was performed on the mice's back and spine. In the experimental group, antigen and alum adjuvant were administered subcutaneously around the wound, while the control group received Phosphate-Buffered Saline (PBS). Using digital images, a geometric assessment was conducted on days 0, 1, 3, 6, 9, 12, 15, 18, and 21 post-wounding. The obtained images were analyzed by Image J software and after analyzing the data by SPSS software. RESULTS A significant difference in terms of epithelization was observed in the antigen treatment group with a dose of 20 µg on days 3 and 6 (P < 0.05). Furthermore, the 20 µg antigen group was significantly higher than the 10 µg antigen group in terms of this factor on day 3 (P < 0.05). Skin samples were taken from all wounds on days 3, 10 and 21 for microscopic evaluation. Regarding epithelization, on day 10, a significant difference was observed in the treatment group with a concentration of 10 µg with the control group and the treatment group with a concentration of 20 µg (P < 0.05). CONCLUSION Based on the results of the present study, it can be concluded that somatic antigens of protoscolex hydatid cyst are dose-dependent and antigens with a dose of 20 µg by subcutaneous injection accelerate wound healing and epithelialization.
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Affiliation(s)
- Sajede Hosseinzade
- Department of PathobiologyFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Hossein Nourani
- Department of PathobiologyFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Hossein Kazemi Mehrjerdi
- Department of Clinical SciencesFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Narges Lotfalizadeh
- Department of PathobiologyFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
| | - Hassan Borji
- Department of PathobiologyFaculty of Veterinary MedicineFerdowsi University of MashhadMashhadIran
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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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7
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Nocerino M, Pepe P, Bosco A, Ciccone E, Maurelli MP, Boué F, Umhang G, Pellegrini J, Lahmar S, Said Y, Sotiraki S, Ligda P, Laatamna A, Saralli G, Paciello O, Alterisio MC, Rinaldi L. An innovative strategy for deworming dogs in Mediterranean areas highly endemic for cystic echinococcosis. Parasit Vectors 2024; 17:86. [PMID: 38395867 PMCID: PMC10893745 DOI: 10.1186/s13071-024-06184-x] [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: 12/12/2023] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Cystic echinococcosis (CE), caused by the larval stage of Echinococcus granulosus sensu lato, is a zoonotic parasitic disease of economic and public health importance worldwide, especially in the Mediterranean area. Canids are the main definitive hosts of the adult cestode contaminating the environment with parasite eggs released with feces. In rural and peri-urban areas, the risk of transmission to livestock as well as humans is high because of the free-roaming behavior of owned/not owned dogs. Collecting data on animal movements and behavior using GPS dataloggers could be a milestone to contain the spread of this parasitosis. Thus, this study aims to develop a comprehensive control strategy, focused on deworming a dog population in a pilot area of southern Italy (Campania region) highly endemic for CE. METHODS Accordingly, five sheep farms, tested to be positive for CE, were selected. In each sheep farm, all shepherd dogs present were treated every 2 months with praziquantel. Furthermore, 15 GPS dataloggers were applied to sheep and dogs, and their movements were tracked for 1 month; the distances that they traveled and their respective home ranges were determined using minimum convex polygon (MCP) analysis with a convex hull geometry as output. RESULTS The results showed that the mean daily walking distances traveled by sheep and dogs did not significantly differ. Over 90% of the point locations collected by GPS fell within 1500 mt of the farm, and the longest distances were traveled between 10:00 and 17:00. In all the sheep farms monitored, the area traversed by the animals during their daily activities showed an extension of < 250 hectares. Based on the home range of the animals, the area with the highest risk of access from canids (minimum safe convex polygon) was estimated around the centroid of each farm, and a potential scheme for the delivery of praziquantel-laced baits for the treatment of not owned dogs gravitating around the grazing area was designed. CONCLUSIONS This study documents the usefulness of geospatial technology in supporting parasite control strategies to reduce disease transmission.
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Affiliation(s)
- Martina Nocerino
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, 80137, Naples, Italy
| | - Paola Pepe
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, 80137, Naples, Italy.
| | - Antonio Bosco
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, 80137, Naples, Italy
- Regional Reference Centre for Animal Health (CRESAN), Naples, Campania Region, Italy
| | - Elena Ciccone
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, 80137, Naples, Italy
- Regional Reference Centre for Animal Health (CRESAN), Naples, Campania Region, Italy
| | - Maria Paola Maurelli
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, 80137, Naples, Italy
- Regional Reference Centre for Animal Health (CRESAN), Naples, Campania Region, Italy
| | - Franck Boué
- ANSES, Nancy Laboratory for Rabies and Wildlife Diseases, Technopôle Agricole et Vétérinaire, BP 40009, 54220, Malzéville, France
| | - Gérald Umhang
- ANSES, Nancy Laboratory for Rabies and Wildlife Diseases, Technopôle Agricole et Vétérinaire, BP 40009, 54220, Malzéville, France
| | - Justine Pellegrini
- ANSES, Nancy Laboratory for Rabies and Wildlife Diseases, Technopôle Agricole et Vétérinaire, BP 40009, 54220, Malzéville, France
| | - Samia Lahmar
- Laboratoire de Parasitologie, École Nationale de Médecine Vétérinaire, 2020 Sidi Thabet, Univ., Manouba, Tunisie
| | - Yousra Said
- Laboratoire de Parasitologie, École Nationale de Médecine Vétérinaire, 2020 Sidi Thabet, Univ., Manouba, Tunisie
| | - Smaragda Sotiraki
- Veterinary Research Institute, Hellenic Agricultural Organisation-Demeter, 57001, Thessaloniki, Greece
| | - Panagiota Ligda
- Veterinary Research Institute, Hellenic Agricultural Organisation-Demeter, 57001, Thessaloniki, Greece
| | - AbdElkarim Laatamna
- Laboratory of Exploration and Valorization of Steppic Ecosystems, Faculty of Nature and Life Sciences, University of Djelfa, Moudjbara Road, BP 3117, Djelfa, Algeria
| | - Giorgio Saralli
- Istituto Zooprofilattico Sperimentale del Lazio e della Toscana M. Aleandri, Rome, Italy
| | - Orlando Paciello
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, 80137, Naples, Italy
| | - Maria Chiara Alterisio
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, 80137, Naples, Italy
| | - Laura Rinaldi
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, CREMOPAR, 80137, Naples, Italy
- Regional Reference Centre for Animal Health (CRESAN), Naples, Campania Region, Italy
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8
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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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Yang J, Zhao Y, Fu Y, Lv Y, Zhu Y, Zhu M, Zhao J, Wang Y, Wu C, Zhao W. Recombinant antigen P29 of Echinococcus granulosus induces Th1, Tc1, and Th17 cell immune responses in sheep. Front Immunol 2023; 14:1243204. [PMID: 38187382 PMCID: PMC10768560 DOI: 10.3389/fimmu.2023.1243204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 11/22/2023] [Indexed: 01/09/2024] Open
Abstract
Echinococcosis is a common human and animal parasitic disease that seriously endangers human health and animal husbandry. Although studies have been conducted on vaccines for echinococcosis, to date, there is no human vaccine available for use. One of the main reasons for this is the lack of in-depth research on basic immunization with vaccines. Our previous results confirmed that recombinant antigen P29 (rEg.P29) induced more than 90% immune protection in both mice and sheep, but data on its induction of sheep-associated cellular immune responses are lacking. In this study, we investigated the changes in CD4+ T cells, CD8+ T cells, and antigen-specific cytokines IFN-γ, IL-4, and IL-17A after rEg.P29 immunization using enzyme-linked immunospot assay (ELISPOT), enzyme-linked immunosorbent assay (ELISA), and flow cytometry to investigate the cellular immune response induced by rEg.P29 in sheep. It was found that rEg.P29 immunization did not affect the percentage of CD4+ and CD8+ T cells in peripheral blood mononuclear cells (PBMCs), and was able to stimulate the proliferation of CD4+ and CD8+ T cells after immunization in vitro. Importantly, the results of both ELISPOT and ELISA showed that rEg.P29 can induce the production of the specific cytokines IFN-γ and IL-17A, and flow cytometry verified that rEg.P29 can induce the expression of IFN-γ in CD4+ and CD8+ T cells and IL-17A in CD4+ T cells; however, no IL-4 expression was observed. These results indicate that rEg.P29 can induce Th1, Th17, and Tc1 cellular immune responses in sheep against echinococcosis infection, providing theoretical support for the translation of rEg.P29 vaccine applications.
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Affiliation(s)
- Jihui Yang
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, China
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases of Ningxia Medical University, Yinchuan, China
| | - Yinqi Zhao
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, China
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases of Ningxia Medical University, Yinchuan, China
| | - Yong Fu
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining, China
| | - Yongxue Lv
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases of Ningxia Medical University, Yinchuan, China
- School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Yazhou Zhu
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases of Ningxia Medical University, Yinchuan, China
- School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Mingxing Zhu
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, China
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases of Ningxia Medical University, Yinchuan, China
| | - Jiaqing Zhao
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, China
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases of Ningxia Medical University, Yinchuan, China
| | - Yana Wang
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases of Ningxia Medical University, Yinchuan, China
- School of Basic Medicine, Ningxia Medical University, Yinchuan, China
| | - Changyou Wu
- Institute of Immunology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Wei Zhao
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, China
- Ningxia Key Laboratory of Prevention and Treatment of Common Infectious Diseases of Ningxia Medical University, Yinchuan, China
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10
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Zhang T, Lv Y, Zhao Y, Yang J, Qian B, Zhu Y, Zhao W, Zhu M. Changes in intestinal flora of mice induced by rEg.P29 epitope peptide vaccines. Immun Inflamm Dis 2023; 11:e1082. [PMID: 38018604 PMCID: PMC10664826 DOI: 10.1002/iid3.1082] [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: 06/20/2023] [Revised: 10/20/2023] [Accepted: 10/26/2023] [Indexed: 11/30/2023] Open
Abstract
OBJECTIVE Cystic echinococcosis (CE), a zoonotic parasitic disease caused by Echinococcus granulosus, remains a public health and socioeconomic issue worldwide, making its prevention and treatment of vital importance. The aim of this study was to investigate changes in the intestinal microbiota of mice immunized with three peptide vaccines based on the recombinant antigen of E. granulosus, P29 (rEg.P29), with the hope of providing more valuable information for the development of vaccines against CE. METHODS Three peptide vaccines, rEg.P29T , rEg.P29B , and rEg.P29T + B , were prepared based on rEg.P29, and a subcutaneous immunization model was established. The intestinal floras of mice in the different immunization groups were analyzed by 16 S rRNA gene sequencing. RESULTS The intestinal microbiota analysis at both immunization time points revealed that Firmicutes, Bacteroidota, and Verrucomicrobiota were the predominant flora at the phylum level, while at the genus level, Akkermansia, unclassified_Muribaculaceae, Lachnospiraceae_NK4A136_group, and uncultured_rumen bacterium were the dominant genera. Some probiotics in the intestines of mice were significantly increased after immunization with the peptide vaccines, such as Lactobacillus_taiwanensis, Lactobacillus_reuteri, Lachnospiraceae_NK4A136_group, Bacteroides_acidifaciens, and so forth. Meanwhile, some harmful or conditionally pathogenic bacteria were decreased, such as Turicibacter sanguinis, Desulfovibrio_fairfieldensis, Clostridium_sp, and so forth, most of which are associated with inflammatory or infectious diseases. Kyoto Encyclopaedia of Genes and Genomes enrichment analysis revealed that the differential flora were enriched in multiple metabolic pathways, primarily biological systems, human diseases, metabolism, cellular processes, and environmental information processing. CONCLUSION In this study, we comprehensively analyzed and compared changes in the intestinal microbiota of mice immunized with three peptide vaccines as well as their related metabolic pathways, providing a theoretical background for the development of novel vaccines against E. granulosus.
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Affiliation(s)
- Tingting Zhang
- School of Clinical MedicineNingxia Medical UniversityYinchuanChina
- Key Laboratory of Common Infectious Disease Prevention and Control in NingxiaYinchuanChina
| | - Yongxue Lv
- Key Laboratory of Common Infectious Disease Prevention and Control in NingxiaYinchuanChina
- School of Basic Medical SciencesNingxia Medical UniversityYinchuanChina
| | - Yinqi Zhao
- Key Laboratory of Common Infectious Disease Prevention and Control in NingxiaYinchuanChina
- Science and Technology Center of Ningxia Medical UniversityYinchuanChina
| | - Jihui Yang
- Key Laboratory of Common Infectious Disease Prevention and Control in NingxiaYinchuanChina
- Science and Technology Center of Ningxia Medical UniversityYinchuanChina
| | - Bingshuo Qian
- General Hospital of Ningxia Medical UniversityYinchuanChina
| | - Yazhou Zhu
- Key Laboratory of Common Infectious Disease Prevention and Control in NingxiaYinchuanChina
| | - Wei Zhao
- Key Laboratory of Common Infectious Disease Prevention and Control in NingxiaYinchuanChina
- School of Basic Medical SciencesNingxia Medical UniversityYinchuanChina
| | - Mingxing Zhu
- Key Laboratory of Common Infectious Disease Prevention and Control in NingxiaYinchuanChina
- Science and Technology Center of Ningxia Medical UniversityYinchuanChina
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11
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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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12
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Hadipour M, Darani HY, Talebzadeh H, Eslamian M, Aboutalebian S, Harandi MF, Mirhendi H. Sensitive detection of specific cell-free DNA in serum samples from sheep with cystic echinococcosis. PLoS Negl Trop Dis 2023; 17:e0011715. [PMID: 37856565 PMCID: PMC10617735 DOI: 10.1371/journal.pntd.0011715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 10/31/2023] [Accepted: 10/10/2023] [Indexed: 10/21/2023] Open
Abstract
BACKGROUND Developing more sensitive methods for the diagnosis of echinococcosis is essential. In this study PCR assay for sensitive detection of specific cell-free DNA (cfDNA) of Echinococcus granulosus sensu lato in the sera of the sheep naturally infected with echinococcosis was investigated. METHODS To extract cfDNA from 35 infected sheep, the modified phenol-chloroform method was used for two different volumes (0.5 and 2 ml) of serum samples. From each extracted sample, two DNA volumes (5 and 10 μl) were amplified using both standard PCR and semi-nested PCR targeting NADH dehydrogenase subunit I. RESULTS Standard and semi-nested PCR on 0.5 ml of serum samples detected Echinococcus DNA in 8 and 12 out of 35 sheep, respectively; however, using 2 ml of serum samples, they detected 24 and 27 samples. By increasing the volume of template DNA, the PCRs could detect 29 and 33 out of 35 samples. The results were confirmed by sequencing of randomly selected PCR amplicons and comparing them with GenBank databases. CONCLUSIONS Larger volumes of serum for DNA extraction, greater volumes of DNA template for PCR, and employing a semi-nested PCR protocol, increased the sensitivity of PCR to 95%. This approach can also be applied to the diagnosis of echinococcosis in humans.
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Affiliation(s)
- Mahboubeh Hadipour
- Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hossein Yousofi Darani
- Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hamid Talebzadeh
- Department of Surgery, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Eslamian
- Department of Surgery, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shima Aboutalebian
- Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Majid Fasihi Harandi
- Research Center for Hydatid Disease in Iran; Dept. of Parasitology, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Hossein Mirhendi
- Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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13
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Shao G, Hua R, Song H, Chen Y, Zhu X, Hou W, Li S, Yang A, Yang G. Protective efficacy of six recombinant proteins as vaccine candidates against Echinococcus granulosus in dogs. PLoS Negl Trop Dis 2023; 17:e0011709. [PMID: 37871121 PMCID: PMC10621941 DOI: 10.1371/journal.pntd.0011709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 11/02/2023] [Accepted: 10/09/2023] [Indexed: 10/25/2023] Open
Abstract
BACKGROUND Cystic echinococcosis (CE) is caused by the infection of Echinococcus granulosus sensu lato (E. granulosus s.l.), one of the most harmful zoonotic helminths worldwide. Infected dogs are the major source of CE transmission. While praziquantel-based deworming is a main measure employed to control dog infections, its efficacy is at times compromised by the persistent high rate of dog re-infection and the copious discharge of E. granulosus eggs into the environment. Therefore, the dog vaccine is a welcome development, as it offers a substantial reduction in the biomass of E. granulosus. This study aimed to use previous insights into E. granulosus functional genes to further assess the protective efficacy of six recombinant proteins in dogs using a two-time injection vaccination strategy. METHODS We expressed and combined recombinant E. granulosus triosephosphate isomerase (rEgTIM) with annexin B3 (rEgANXB3), adenylate kinase 1 (rEgADK1) with Echinococcus protoscolex calcium binding protein 1 (rEgEPC1), and fatty acid-binding protein (rEgFABP) with paramyosin (rEgA31). Beagle dogs received two subcutaneous vaccinations mixed with Quil-A adjuvant, and subsequently orally challenged with protoscoleces two weeks after booster vaccination. All dogs were sacrificed for counting and measuring E. granulosus tapeworms at 28 days post-infection, and the level of serum IgG was detected by ELISA. RESULTS Dogs vaccinated with rEgTIM&rEgANXB3, rEgADK1&rEgEPC1, and rEgFABP-EgA31 protein groups exhibited significant protectiveness, with a worm reduction rate of 71%, 57%, and 67%, respectively, compared to the control group (P < 0.05). Additionally, the vaccinated groups exhibited an inhibition of worm growth, as evidenced by a reduction in body length and width (P < 0.05). Furthermore, the level of IgG in the vaccinated dogs was significantly higher than that of the control dogs (P < 0.05). CONCLUSION These verified candidates may be promising vaccines for the prevention of E. granulosus infection in dogs following two injections. The rEgTIM&rEgANXB3 co-administrated vaccine underscored the potential for the highest protective efficacy and superior protection stability for controlling E. granulosus infections in dogs.
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Affiliation(s)
- Guoqing Shao
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan Province, P. R. China
| | - Ruiqi Hua
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan Province, P. R. China
| | - Hongyu Song
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan Province, P. R. China
| | - Yanxin Chen
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan Province, P. R. China
| | - Xiaowei Zhu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan Province, P. R. China
| | - Wei Hou
- Sichuan Center for Animal Disease Prevention and Control, Chengdu, Sichuan Province, P. R. China
| | - Shengqiong Li
- Sichuan Center for Animal Disease Prevention and Control, Chengdu, Sichuan Province, P. R. China
| | - Aiguo Yang
- Sichuan Center for Animal Disease Prevention and Control, Chengdu, Sichuan Province, P. R. China
| | - Guangyou Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, Sichuan Province, P. R. China
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14
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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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15
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Sheves A, Fuxman Y, Gazer B, Shmueli M, Van Buren J, Ben-Shimol S, Assi Z. Treatment of Cystic Echinococcosis in Children: A Single Center Experience. Pediatr Infect Dis J 2023; 42:175-179. [PMID: 36729526 DOI: 10.1097/inf.0000000000003793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Cystic echinococcosis (CE) treatment is complicated, relying on cysts characteristics, host factors and possible treatment adverse events. We assessed childhood CE treatment characteristics. METHODS A retrospective cohort study, 2005-2021, which presents our experience with treating children with CE. We compared therapeutic interventions use in association with the location, size and number of cysts. Additionally, we assessed complications rate following those interventions. RESULTS Sixty six children had CE; 97% were Bedouins. Overall, 183 cysts were identified in 74 organs: liver (n = 47, 64%), lungs (n = 23, 31%), brain, para-ovarian, kidney and peritoneum (other-grouped, n = 4, 5%). Mean ± Standard deviation largest cyst size (per patient) was 6.6 ± 3.2 cm. Treatment with albendazole was administered to 94% of CE, while albendazole monotherapy was used in 27% (n = 18, including 4 cases with extra-hepatic cysts). Surgical interventions included drainage/puncture, aspiration, injection and reaspiration (PAIR; n = 20), mainly performed in hepatic-CE (40% vs. 4% in pulmonary-CE, and 0% in other-CE), excision and drainage (n = 34) and complete excision (n = 10), mainly done in other-CE (50% vs. 26% and 4% in pulmonary-CE and hepatic-CE, respectively). Larger cyst size was associated with complete excision compared with albendazole monotherapy. The number of cysts was not associated with the chosen intervention. Fever was recorded following 39% of surgical interventions. Local surgical complications were relatively rare. CONCLUSIONS Cysts location and size affected treatment choice among CE patients. Procedures with drainage had relatively higher rate of complications, including recurrence. Albendazole monotherapy may be a viable therapeutic option in selected CE cases.
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Affiliation(s)
- Asaf Sheves
- From the The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Department of Pediatric Surgery, Soroka University Medical Center, Beer-Sheva, Israel
| | - Yulia Fuxman
- From the The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Department of Pediatric Surgery, Soroka University Medical Center, Beer-Sheva, Israel
| | - Benny Gazer
- From the The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Department of Pediatric Surgery, Soroka University Medical Center, Beer-Sheva, Israel
| | - Moshe Shmueli
- From the The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Jacob Van Buren
- Medical School for International Health, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Shalom Ben-Shimol
- From the The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- The Pediatric Infectious Disease Unit, Soroka University Medical Center, Beer-Sheva, Israel
| | - Zaki Assi
- From the The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
- Department of Pediatric Surgery, Soroka University Medical Center, Beer-Sheva, Israel
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16
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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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17
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Zoonotic helminths - why the challenge remains. J Helminthol 2023; 97:e21. [PMID: 36790130 DOI: 10.1017/s0022149x23000020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Helminth zoonoses remain a global problem to public health and the economy of many countries. Polymerase chain reaction-based techniques and sequencing have resolved many taxonomic issues and are now essential to understanding the epidemiology of helminth zoonotic infections and the ecology of the causative agents. This is clearly demonstrated from research on Echinococcus (echinococcosis) and Trichinella (trichinosis). Unfortunately, a variety of anthropogenic factors are worsening the problems caused by helminth zoonoses. These include cultural factors, urbanization and climate change. Wildlife plays an increasingly important role in the maintenance of many helminth zoonoses making surveillance and control increasingly difficult. The emergence or re-emergence of helminth zoonoses such as Ancylostoma ceylanicum, Toxocara, Dracunculus and Thelazia exacerbate an already discouraging scenario compounding the control of a group of long neglected diseases.
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An Epidemiological Survey to Investigate the Prevalence of Cystic Echinococcosis in Slaughtered Bovine Hosts in Punjab, Pakistan. Vet Sci 2023; 10:vetsci10010040. [PMID: 36669040 PMCID: PMC9867468 DOI: 10.3390/vetsci10010040] [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: 11/13/2022] [Revised: 12/23/2022] [Accepted: 12/25/2022] [Indexed: 01/09/2023] Open
Abstract
Cystic echinococcosis (CE) is a neglected zoonotic disease of worldwide geographical distribution. CE is most common in underdeveloped and herding communities where people survive on animal husbandry and agricultural activities. The prevalence of CE in livestock and its risk factors are widely underreported, because of inefficient surveillance systems. The aim of this study was to evaluate the epidemiological characteristics and prevalence of CE in cattle in Punjab, Pakistan. Data were collected from slaughterhouses from September 2021 to February 2022. Ante- and postmortem examination and cyst characterization were performed. Epidemiological, demographic, and one health data were collected. A total of 8877 animals (8096 buffalo, 781 cattle) were examined, and the prevalence of CE was 6.22% (n = 552) in all animals, with a higher prevalence in cattle (15.20% vs. buffalo 5.83%). Prevalence was not significantly different in males and females. Of the 23 districts studied, the highest prevalence was in the Haripur district of KP (20.85%). The majority of animals studied were older than 3 years. Most cysts were found in animals older than 5 years. Lungs and liver were the predominant sites for the presence of cysts (65.58% and 31.34%, respectively. Of the collected cysts, 29.71% were fertile. The findings may be useful in estimating the eco-epidemiology of CE and improving surveillance and prevention programs in Pakistan.
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Yang XB, Meng XZ, Zhao Y, Zhao JP, Chen C, Qin Y, Zhang Y, Zhao Q. Meta-analysis of the prevalence of bovine cystic echinococcosis in China during decade. Res Vet Sci 2022; 152:465-475. [PMID: 36150257 DOI: 10.1016/j.rvsc.2022.09.004] [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: 04/21/2022] [Revised: 07/29/2022] [Accepted: 09/03/2022] [Indexed: 11/25/2022]
Abstract
BACKGROUND Cystic echinococcosis (CE) is a zoonotic parasitic disease caused by Echinococcus granulosus sensu lato (E. granulosus s.l.) larvae. It is mainly prevalent in western agricultural and pastoral areas in China, seriously affecting the development of public health and animal husbandry. METHODS This study conducted a systematic evaluation and meta-analysis of bovine CE in China in the past 10 years (2011-2020). Five databases (PubMed, ScienceDirect, CNKI, Wanfang Data, VIP Chinese Journal Database) were used to collect the relevant references, and finally 77 published articles were obtained. RESULTS The total prevalence of bovine CE was estimated to be 9.62% during decade, and decreased year by year after reaching its peak in 2014 (18.75%). The highest E. granulosus s.l. infection rate was found in Qinghai province (14.79%). The infection rate of cattle >4 years old (15.84%) was significantly higher than that of other age groups, and cattle raised by grazing was significantly higher than that of other methods (17.00%). In the groups of geographical and climatic factors, the prevalence of CE was higher in regions with high-altitude (20.76%), cold (20.76%) and rainy areas (11.33%). CONCLUSION This study found that old age and grazing were two important factors for the high incidence of bovine CE. The prevalence of CE is higher in low temperature, rainy and high altitude areas, where may be more suitable for the survival of E. granulosus s.l. eggs.
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Affiliation(s)
- Xin-Bo Yang
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, Jilin 130118, PR China
| | - Xiang-Zhu Meng
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, Jilin 130118, PR China
| | - Yan Zhao
- Wenzhou Animal Disease Prevention and Control Center, Wenzhou, Zhejiang 325000, PR China
| | - Jin-Ping Zhao
- College of Veterinary Medicine, Qingdao Agricultural University, Qingdao, Shandong 266109, PR China
| | - Chao Chen
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, Jilin 130118, PR China
| | - Ya Qin
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, Jilin 130118, PR China
| | - Yuan Zhang
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, Jilin 130118, PR China.
| | - Quan Zhao
- College of Veterinary Medicine, Jilin Agricultural University, Changchun, Jilin 130118, PR China.
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Alterations in Gut Microbiota Profiles of Mice Infected with Echinococcus granulosus sensu lato Microbiota Profiles of Mice Infected with E. granulosus s.l. Acta Parasitol 2022; 67:1594-1602. [PMID: 36048399 DOI: 10.1007/s11686-022-00613-6] [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: 02/18/2022] [Accepted: 08/17/2022] [Indexed: 11/01/2022]
Abstract
OBJECTIVE Cystic echinococcosis is a kind of parasitic disease that seriously endangers human and animal health. At present, its prevention and treatment still do not achieve the desired results. The aims of this study were to explore the effect of CE on intestinal microflora in mice. METHODS In this study, 16S rRNA metagenome sequencing and bioinformatics were used to analyze the intestinal flora of mice infected with E. granulosus s.l. Changes in intestinal microbial community abundance were investigated and the differences in microbial populations of mice infected with E. granulosus s.l. were screened. RESULTS Our results show that at the phylum level, nine abundant taxa were identified, the relative abundance of Firmicutes and Proteobacteria were enriched in infected mice, whereas Bacteroidetes and Patescibacteria were enriched in control mice (P < 0.01). At the class level, 13 abundant taxa were identified, the relative abundance of Bacilli was enriched in control mice, but decreased in infected mice (P < 0.01). At the order level, 15 abundant taxa were identified, the relative abundance of Lactobacillales was enriched in control mice, but decreased in infected mice (P < 0.01). At the family level, 28 abundant taxa were identified, enriched bacteria in the infected mice was Streptococcaceae, while the enriched bacteria in the control group was Lactobacillaceae (P < 0.01). At the genus level, 79 abundant taxa were identified, enriched bacteria in the infected mice was Streptococcus, while the enriched bacteria in the control group was uncultured_bacterium_f_Eggerthellaceae (P < 0.01). At the species level, 80 abundant taxa were identified, enriched bacteria in the infected mice was uncultured_bacterium_g_Streptococcus, while the enriched bacteria in the control group was uncultured_bacterium_f_Eggerthellaceae (P < 0.01). 39 KEGG pathways were identified that were differentially enriched between the infected and control mice. CONCLUSION This study comprehensively demonstrates the differential intestinal microbiota of infected mice and analyzes the metabolic pathways related to the specific microbiota. This could provide new targets and research direction for the treatment and prevention of diseases caused by E. granulosus s.l.
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Hua RQ, Du XD, He X, Gu XB, Xie Y, He R, Xu J, Peng XR, Yang GY. Genetic diversity of Echinococcus granulosus sensu lato in China: Epidemiological studies and systematic review. Transbound Emerg Dis 2022; 69:e1382-e1392. [PMID: 35139582 DOI: 10.1111/tbed.14469] [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: 09/07/2021] [Revised: 01/05/2022] [Accepted: 02/01/2022] [Indexed: 11/26/2022]
Abstract
Cystic echinococcosis (CE) is a neglected tropical zoonosis caused by Echinococcus granulosus sensu lato (s.l.) and remains a major public health concern globally. Here, CE isolates (n = 3310) with clearly defined genotypes and geographical origins in China were retrieved through our epidemiological survey (2016-2020) and systematic review (1992-2020). Existing known genotypes of Echinococcus granulosus sensu lato (E. granulosus s.l.) except for G4 have been found in China, particularly on the Tibetan Plateau, where their genetic diversity is unique to that part of the world. According to the systematic review, genetic compositions of E. granulosus s.l. in China were as follows: E. granulosus (G1, G3), 98.3%; Echinococcus ortleppi (G5), 0.1%; Echinococcus intermedius (G6, G7), 1.4%; and Echinococcus canadensis (G8, G10), 0.2%. Specifically, G1 was responsible for 97.7% of infections and characterized by the broadest host ranges and geographic distributions. Our epidemiological results showed a relatively stable genetic composition of E. granulosus s.l. in sheep and yaks from three CE hyperendemic provinces (Xinjiang, Sichuan, Qinghai). A higher proportion of fertile cysts were found in sheep (287/406, 70.7%) than in yaks (28/184, 15.2%). During the past 29 years, 51 cox1 haplotypes of E. granulosus s.l. were endemic in China. The ancestral haplotype (Hap_2) remained the most common haplotype, 12 relatively common haplotypes were endemic and nine newly reported haplotypes were found during the survey. Overall, our results demonstrate that the compulsory immunization of sheep and the pilot EG95 vaccination campaign in yaks are well matched with the current genotypic situation. In addition to yaks, we advocate for more surveillance of CE isolates from pigs, cattle, goats and camels, since their roles in the transmission and reservation of E. granulosus s.l. have been largely ignored in China.
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Affiliation(s)
- Rui-Qi Hua
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
| | - Xiao-Di Du
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
| | - Xue He
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
| | - Xiao-Bin Gu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
| | - Yue Xie
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
| | - Ran He
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
| | - Jing Xu
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
| | - Xue-Rong Peng
- Department of Chemistry, College of Life and Basic Science, Sichuan Agricultural University, Ya'an, P. R. China
| | - Guang-You Yang
- Department of Parasitology, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, P. R. China
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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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Cystic Echinococcosis: An Impact Assessment of Prevention Programs in Endemic Developing Countries in Africa, Central Asia, and South America. J ZOOL SYST EVOL RES 2022. [DOI: 10.1155/2022/8412718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background. Cystic echinococcosis (CE), caused by the tapeworm species, Echinococcus granulosus sensu stricto (G1), is one of many primary neglected zoonoses worldwide. Within endemic developing countries, CE has multiple effects on animal and human health and well-being. To address such effects, veterinary and human medical sector collaboration on prevention program delivery is essential. To begin preliminary evaluations of county specific prevention programs, a critically appraised topic (CAT) was conducted. It sought to answer: What impact do CE prevention programs have on human and animal disease prevalence, in populations living in endemic developing countries within Africa, Central Asia, and South America? Methodology. The aim was to assess the ability of prevention and control program outputs to produce measurable differences in health, social, and economic outcomes (e.g., improved access to medical services, positive behavioral change, or reduced treatment costs, respectively). Included articles were obtained using predefined inclusion/exclusion criteria from the four databases (CAB Abstracts and Global Health; the National Library of Medicine (PubMed); ScienceDirect; and WHO Institutional Repository of Information Sharing (IRIS)). The articles were appraised using three checklists: the Royal College of Veterinary Surgeons (RCVS), the Critical Appraisals Skills Programme (CASP), and the Joanna Briggs Institute checklists. Results. Ten articles were selected. Geographically, 20% of studies were conducted in South America, 30% in Africa, and 50% in Central Asia. For definitive hosts, dogs, CoproELISA antigen testing, before and after Praziquantel (PZQ) de-worming, was a primary focus. For humans, who are intermediate hosts (IH), disease surveillance methods, namely ultrasound (US), were commonly assessed. Whilst for sheep, also acting as IH, disease prevention methods, such as the EG95 livestock vaccine and de-worming farm dogs, were evaluated. Common to all studies were issues of program sustainability, in terms of regular human US screening, dog de-worming, and annual sheep vaccination. This was attributed to transient and remote human or animal populations; limited access to adequate roads or hospitals; few skilled health workers or veterinarians; an over-reliance on communities to administer preventatives; and limited resources. Conclusion. Despite variations in result validity and collection periods, useful comparisons of CE endemic countries produced key research and program recommendations. Future research recommendations included testing the significance of multiple program outcomes in relation to prevalence (e.g., the social outcome: behavioral change), further research on the impact of livestock vaccinations, and the CE transmission role of waterways and sanitation. Program recommendations included calculating and distinguishing between stray versus owned dog populations; formal representation of internal and external stakeholder interests through institutional organization; establishing sustainable guidelines around the frequency of PZQ and vaccination administration; improved veterinary-human medical training and resource sharing; and combined prevention methods and multiple canine disease management.
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Maglioco A, Agüero FA, Valacco MP, Valdez AJ, Paulino M, Fuchs AG. Characterization of the B-Cell Epitopes of Echinococcus granulosus Histones H4 and H2A Recognized by Sera From Patients With Liver Cysts. Front Cell Infect Microbiol 2022; 12:901994. [PMID: 35770070 PMCID: PMC9234146 DOI: 10.3389/fcimb.2022.901994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 05/02/2022] [Indexed: 11/13/2022] Open
Abstract
Cystic echinococcosis (CE) is a zoonotic disease worldwide distributed, caused by the cestode Echinococcus granulosus sensu lato (E. granulosus), with an incidence rate of 50/100,000 person/year and a high prevalence in humans of 5-10%. Serology has variable sensitivity and specificity and low predictive values. Antigens used are from the hydatid fluid and recombinant antigens have not demonstrated superiority over hydatid fluid. A cell line called EGPE was obtained from E. granulosus sensu lato G1 strain from bovine liver. Serum from CE patients recognizes protein extracts from EGPE cells with higher sensitivity than protein extracts from hydatid fluid. In the present study, EGPE cell protein extracts and supernatants from cell colonies were eluted from a protein G affinity column performed with sera from 11 CE patients. LC-MS/MS proteomic analysis of the eluted proteins identified four E. granulosus histones: one histone H4 in the cell extract and supernatant, one histone H2A only in the cell extract, and two histones H2A only in the supernatant. This differential distribution of histones could reflect different parasite viability stages regarding their role in gene transcription and silencing and could interact with host cells. Bioinformatics tools characterized the linear and conformational epitopes involved in antibody recognition. The three-dimensional structure of each histone was obtained by molecular modeling and validated by molecular dynamics simulation and PCR confirmed the presence of the epitopes in the parasite genome. The three histones H2A were very different and had a less conserved sequence than the histone H4. Comparison of the histones of E. granulosus with those of other organisms showed exclusive regions for E. granulosus. Since histones play a role in the host-parasite relationship they could be good candidates to improve the predictive value of serology in CE.
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Affiliation(s)
- Andrea Maglioco
- Universidad Abierta Interamericana (UAI), Centro de Altos Estudios en Ciencias Humanas y de la Salud (CAECIHS), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Facundo A. Agüero
- Universidad Abierta Interamericana (UAI), Centro de Altos Estudios en Ciencias Humanas y de la Salud (CAECIHS), Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - María Pía Valacco
- Centro de Estudios Químicos y Biológicos por Espectrometría de Masas (CEQUIBIEM), Instituto de Química Biológica Ciencias Exactas y Naturales- Consejo Nacional de Investigaciones Científicas y Técnicas (IQUIBICEN-CONICET), Facultad de Ciencias Exactas y Naturales- Universidad de Buenos Aires (UBA), Buenos Aires, Argentina
| | - Alejandra Juárez Valdez
- Universidad Abierta Interamericana (UAI), Centro de Altos Estudios en Ciencias Humanas y de la Salud (CAECIHS), Buenos Aires, Argentina
| | - Margot Paulino
- Departamento de Experimentación y Teoría de la Estructura de la Materia y sus Aplicaciones, Facultad de Química, Bioinformatica DETEMA- Udelar, Universidad de la República, Montevideo, Uruguay
- *Correspondence: Margot Paulino, ; Alicia G. Fuchs,
| | - Alicia G. Fuchs
- Universidad Abierta Interamericana (UAI), Centro de Altos Estudios en Ciencias Humanas y de la Salud (CAECIHS), Buenos Aires, Argentina
- Instituto Nacional de Parasitología “Dr Mario Fatala- Chaben”, (Administración Nacional de Laboratorios e Institutos de Salud )ANLIS‐Malbrán, Buenos Aires, Argentina
- *Correspondence: Margot Paulino, ; Alicia G. Fuchs,
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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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In vitro Scolicidal Efficacy of 5-Fluorouracil and Radiation Against Protoscoleces of Echinococcus granulosus Sensu Lato. Acta Parasitol 2022; 67:820-826. [PMID: 35113338 DOI: 10.1007/s11686-022-00518-4] [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: 10/08/2021] [Accepted: 01/03/2022] [Indexed: 11/01/2022]
Abstract
PURPOSE Cystic echinococcosis (CE) caused by Echinococcus granulosus sensu lato (s.l.) is a globally distributed zoonosis. CE treatment is difficult, but radiation and 5-fluorouracil (5-FU) can be effective. However, the combination of radiation and 5-FU has not been reported. This study evaluated the effect of combination of 5-FU and radiation on E. granulosus s.l. protoscoleces (PSCs). MATERIAL AND METHODS In this study, PSCs were collected from the liver of diseased sheep, and some were exposed to a single dose of 20 Gy 6-MV X-ray combined with (5 μg/mL or 10 μg/mL) 5-FU in vitro. Methylene blue staining was used to detect the viability of the PSCs. Transcription of EgHSP70 and Egp38 was measured by quantitative real-time PCR (qRT- PCR). RESULTS A single dose of radiation killed 18% of the PSCs, and 5-FU showed weak parasiticidal efficacy on the first day of treatment. After 14 d, 5 μg and 10 μg/mL of 5-FU killed 40.20% and 50.02% of the PSCs, whereas 20 Gy of radiation killed 31.44%. The combination of 5-FU (10 μg/mL) with 20 Gy of radiation showed 77.55% killing efficacy. qRT-PCR showed that 5-FU inhibited Egp38 expression, whereas radiation increased its expression. EgHSP70 was highly expressed 14 days after radiation treatment. The data indicate that 5-FU has parasiticidal efficacy against the PSCs of E. granulosus s.l. CONCLUSION The lethal efficacy of PSCs caused by a single dose of radiation exposure is related to the upregulated expression level of Egp38 and EgHSP70. The killing effect of 5-FU (10 μg/mL) with 20Gy of radiation was significantly better than that of single treatment group. This study provided a basis for the potential role of 5-FU combined with radiation in the treatment of CE.
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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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Xu S, Guo Y, Luo T, Jiang P, Yan Z, He Y, Fu L, Liu H, Gao Z, Wang D, Sun Z, Yang X, Pan W, Sun F. Transcriptomic Profiles of Splenic CD19 + B Cells in Mice Chronically Infected With the Larval Echinococcus granulosus. Front Vet Sci 2022; 9:848458. [PMID: 35548052 PMCID: PMC9082817 DOI: 10.3389/fvets.2022.848458] [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: 01/04/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022] Open
Abstract
Background We previously reported that the larval Echinococcus granulosus (E. granulosus) infection can expand the population of regulatory B cells in mice, thereby inhibiting the anti-infective immunity. However, the underlying mechanism is still largely unknown. This study further investigated the holistic transcriptomic profiles of total splenic B cells following the chronic infection of the parasite. Methods The infection model of larval E. granulosus was established by intraperitoneal inoculation with 2000 protoscolexes. Magnetic-Activated Cell Separation (MACS) was used to isolate the total splenic B cells. RNA sequencing was performed to screen the differentially expressed genes (DEGs) after infection. The expression of selected DEGs was verified using qRT-PCR. Gene Ontology (GO) analysis, Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis, and Co-expression network analysis were applied to predict these DEGs' underlying biological processes, pathways, and interactions respectively. Results A total of 413 DEGs were identified in larval E. granulosus infected B cells, including 303 up- and 110 down-regulated genes. Notably, most DEGs related to inflammation and chemotaxis were significantly upregulated after infection. In line with these changes, significant expression upregulation of DEGs associated with fatty acid oxidation, lipid synthesis, lipolysis, lipid transport, and cholesterol biosynthesis, were observed in infected B cells. Co-expression network analysis showed an intimate interaction between these DEGs associated with immune and metabolism. Conclusions The present study revealed that the larval E. granulosus infection induces metabolic reprogramming of B cells, which provides a novel clue to clarify the immunoregulatory mechanism of B cells in parasitic infection.
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Affiliation(s)
- Shiping Xu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
- The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China
- National Experimental Teaching Demonstration Center of Basic Medicine (Xuzhou Medical University), Xuzhou, China
| | - Yuxin Guo
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
- The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China
- National Experimental Teaching Demonstration Center of Basic Medicine (Xuzhou Medical University), Xuzhou, China
| | - Tiancheng Luo
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
- The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China
- National Experimental Teaching Demonstration Center of Basic Medicine (Xuzhou Medical University), Xuzhou, China
| | - Pengfei Jiang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
- National Experimental Teaching Demonstration Center of Basic Medicine (Xuzhou Medical University), Xuzhou, China
| | - Ziyi Yan
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
- The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China
- National Experimental Teaching Demonstration Center of Basic Medicine (Xuzhou Medical University), Xuzhou, China
| | - Yan He
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
- The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China
- National Experimental Teaching Demonstration Center of Basic Medicine (Xuzhou Medical University), Xuzhou, China
| | - Linlin Fu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
| | - Hua Liu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research), Shanghai, China
- National Health Commission Key Laboratory of Parasite and Vector Biology, Shanghai, China
- World Health Organization Collaborating Centre for Tropical Diseases, Shanghai, China
- National Center for International Research on Tropical Diseases, Shanghai, China
| | - Zixuan Gao
- Department of Physiology, Xuzhou Medical University, Xuzhou, China
| | - Dingmin Wang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
- The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China
- National Experimental Teaching Demonstration Center of Basic Medicine (Xuzhou Medical University), Xuzhou, China
| | - Zhengxiu Sun
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
- The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China
- National Experimental Teaching Demonstration Center of Basic Medicine (Xuzhou Medical University), Xuzhou, China
| | - Xiaoying Yang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
| | - Wei Pan
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
| | - Fenfen Sun
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
- National Experimental Teaching Demonstration Center of Basic Medicine (Xuzhou Medical University), Xuzhou, China
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Yang S, Du X, Wang C, Zhang T, Xu S, Zhu Y, Lv Y, Zhao Y, Zhu M, Guo L, Zhao W. Coding and Noncoding RNA Expression Profiles of Spleen CD4 + T Lymphocytes in Mice with Echinococcosis. CONTRAST MEDIA & MOLECULAR IMAGING 2022; 2022:9742461. [PMID: 35480082 PMCID: PMC9012641 DOI: 10.1155/2022/9742461] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/04/2022] [Accepted: 03/14/2022] [Indexed: 11/17/2022]
Abstract
Cystic echinococcosis (CE) is a severe and neglected zoonotic disease that poses health and socioeconomic hazards. So far, the prevention and treatment of CE are far from meeting people's ideal expectations. Therefore, to gain insight into the prevention and diagnosis of CE, we explored the changes in RNA molecules and the biological processes and pathways involved in these RNA molecules as E. granulosus infects the host. Interferon (IFN)-γ, interleukin (IL)-2, IL-4, IL-6, IL-10, IL-17A, and tumor necrosis factor (TNF)-α levels in peripheral blood serum of E. granulosus infected and uninfected female BALB/c mice were measured using the cytometric bead array mouse Th1/Th2/Th17 cytokine kit. mRNA, microRNA (miRNA), long noncoding RNA (lncRNA), and circular RNA (circRNA) profiles of spleen CD4+ T cells from the two groups of mice were analyzed using high-throughput sequencing and bioinformatics. The levels of IFN-γ, IL-2, IL-4, IL-6, IL-10, IL-17A, and TNF-α were significantly higher in the serum of the CE mice than in control mice (P < 0.01). In total, 1,758 known mRNAs, 37 miRNAs, 175 lncRNAs, and 22 circRNAs were differentially expressed between infected and uninfected mice (|fold change| ≥ 0.585, P < 0.05). These differentially expressed molecules are involved in chromosome composition, DNA/RNA metabolism, and gene expression in cell composition, biological function, and cell function. Moreover, closely related to the JAK/STAT signaling pathways, mitogen-activated protein kinase signaling pathways, P53 signaling pathways, PI3K/AKT signaling pathways, cell cycle, and metabolic pathways. E. granulosus infection significantly increased the levels of IFN-γ, IL-2, IL-4, IL-6, IL-10, IL-17A, and TNF-α in mouse peripheral blood of mice and significantly changed expression levels of various coding and noncoding RNAs. Further study of these trends and pathways may help clarify the pathogenesis of CE and provide new insights into the prevention and treatment of this disease.
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Affiliation(s)
- Songhao Yang
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Department of Medical Genetics and Cell Biology, School of Basic Medical Science of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Xiancai Du
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Department of Medical Genetics and Cell Biology, School of Basic Medical Science of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Chan Wang
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Department of Medical Genetics and Cell Biology, School of Basic Medical Science of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Tingrui Zhang
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Department of Medical Genetics and Cell Biology, School of Basic Medical Science of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Shimei Xu
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Center of Scientific Technology of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Yazhou Zhu
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Department of Medical Genetics and Cell Biology, School of Basic Medical Science of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Yongxue Lv
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Department of Medical Genetics and Cell Biology, School of Basic Medical Science of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Yinqi Zhao
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Center of Scientific Technology of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Mingxing Zhu
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Department of Medical Genetics and Cell Biology, School of Basic Medical Science of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Center of Scientific Technology of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Lingna Guo
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Center of Scientific Technology of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
| | - Wei Zhao
- Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Hui Autonomous Region, Ningxia Hui Autonomous Region 750004, Yinchuan, China
- Department of Medical Genetics and Cell Biology, School of Basic Medical Science of Ningxia Medical University, Ningxia Hui Autonomous Region 750004, Yinchuan, China
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Echinococcus granulosus cyclophilin: Immunoinformatics analysis to provide insights into the biochemical properties and immunogenic epitopes. INFORMATICS IN MEDICINE UNLOCKED 2022. [DOI: 10.1016/j.imu.2022.100925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Hernández-González A, González-Bertolín B, Urrea L, Fleury A, Ferrer E, Siles-Lucas M, Tamarozzi F, Perteguer MJ. Multiple-bead assay for the differential serodiagnosis of neglected human cestodiases: Neurocysticercosis and cystic echinococcosis. PLoS Negl Trop Dis 2022; 16:e0010109. [PMID: 35030166 PMCID: PMC8759687 DOI: 10.1371/journal.pntd.0010109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 12/17/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Neurocysticercosis (NCC), and cystic echinococcosis (CE) are two neglected diseases caused by cestodes, co-endemic in many areas of the world. Imaging studies and serological tests are used in the diagnosis of both parasitic diseases, but cross-reactions may confound the results of the latter. The novel multiplex bead-based assay with recombinant antigens has been reported to increases the diagnostic accuracy of serological techniques. METHODOLOGY We set-up an immunoassay based on the multiplex bead-based platform (MBA), using the rT24H (against Cysticercus cellulosae, causing cysticercosis) and r2B2t (against Echinococcus granulosus sensu lato, causing CE) recombinant antigens, for simultaneous and differential diagnosis of these infections. The antigens were tested on 356 sera from 151 patients with CE, 126 patients with NCC, and 79 individuals negative for both diseases. Specificity was calculated including sera from healthy donors, other neurological diseases and the respective NCC or CE sera counterpart. The diagnostic accuracy of this assay was compared with two commercial ELISA tests, Novalisa and Ridascreen, widely used in the routine diagnosis of cysticercosis and CE, respectively. MAIN FINDINGS For the diagnosis of NCC, sensitivity ranged from 57.94-63.49% for the rT24H-MBA, and 40.48-46.03% for Novalisa ELISA depending on exclusion or inclusion of sera having equivocal results on ELISA from the analysis; specificities ranged from 90.87-91.30% and 70.43-76.96%, respectively. AUC values of the ROC curve were 0.783 (rT24H) and 0.619 (Novalisa) (p-value < 0.001). For the diagnosis of CE, the sensitivity of the r2B2t-MBA ranged from 68.87-69.77% and of Ridascreen ELISA from 50.00-57.62%; specificities from 92.47-92.68% and from 74.15-80.98%, respectively. AUC values were 0.717 and 0.760, respectively. CONCLUSIONS/SIGNIFICANCE Overall, the recombinant antigens tested with the bead-based technology showed better diagnostic accuracy than the commercial assays, particularly for the diagnosis of NCC. The possibility of testing the same serum sample simultaneously for the presence of antibodies against both antigens is an added value particularly in seroprevalence studies for cysticercosis linked to control programs in endemic areas where these two parasites coexist.
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Affiliation(s)
- Ana Hernández-González
- Laboratorio de Helmintos, Centro Nacional de Microbiología (CNM), Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Belén González-Bertolín
- Laboratorio de Helmintos, Centro Nacional de Microbiología (CNM), Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
| | - Laura Urrea
- Laboratorio de Helmintos, Centro Nacional de Microbiología (CNM), Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
| | - Agnes Fleury
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM); México/Instituto Nacional de Neurología and Neurocirugía, Mexico City, Mexico
| | - Elizabeth Ferrer
- Instituto de Investigaciones Biomédicas "Dr. Francisco J. Triana Alonso" (BIOMED), Departamento de Parasitología, Facultad de Ciencias de la Salud, Universidad de Carabobo Sede Aragua, Maracay, estado Aragua, Venezuela
| | - Mar Siles-Lucas
- Instituto de Recursos Naturales and Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), Salamanca, Spain
| | - Francesca Tamarozzi
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar, Verona, Italy
| | - Maria J. Perteguer
- Laboratorio de Helmintos, Centro Nacional de Microbiología (CNM), Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
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Zhang H, Tian M, Qi W, Wu J, Zheng H, Guo G, Zhang L, Ranasinghe SL, McManus DP, Li J, Zhang W. Bioinformatic comparison of Kunitz protease inhibitors in Echinococcus granulosus sensu stricto and E. multilocularis and the genes expressed in different developmental stages of E. granulosus s.s. BMC Genomics 2021; 22:907. [PMID: 34922456 PMCID: PMC8684439 DOI: 10.1186/s12864-021-08219-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 11/11/2021] [Indexed: 11/23/2022] Open
Abstract
Background
Cystic and alveolar echinococcosis caused by the tapeworms Echinococcus granulosus sensu stricto (s.s.) and E. multilocularis, respectively, are important zoonotic diseases. Protease inhibitors are crucial for the survival of both Echinococcus spp. Kunitz-type inhibitors play a regulatory role in the control of protease activity. In this study,we identified Kunitz-type domain protease inhibitors(KDPIs) present in the genomes of these two tapeworms and analyzed the gene sequences using computational, structural bioinformatics and phylogenetic approaches to evaluate the evolutionary relationships of these genes. Hi-seq transcriptome analysis showed that E. granulosuss.s. KDPIs were differentially expressed in the different developmental stages. We validated some of the genes expressed in adult worm, protoscolex and cyst germinal membrane of E. granulosuss.s. and E. multilocularis by quantitative PCR. Results A total of 19 genes from E. multilocularis and 23 genes from E. granulosuss.s. were predicted to be KDPIs with the most containing a single Kunitz-domain. A maximum likelihood method phylogenetic tree indicated that the E. granulosuss.s. and E. multilocularis Kunitz domain peptides were divided into three branches containing 9 clusters. The ratio of positively charged residues and neutral residues are different between E. multilocularis and E. granulosuss.s. KDPIs. We also found that E. multilocularis had higher percentage of sequences containing signal peptides (17/19, 89.47%) than that of E. granulosuss.s. (14/23, 60.87%). Transcript analysis showed all the E. granulosuss.s. KDPI genes were expressed differentially in four developmental stages of the worm. Transcription analysis showed that 9 KDPIs (including EG_07244,EGR_08716 and EGR_10096) were highly upregulated in adult worm, and 2 KDPIs (EG_09268 and EG_09490) were highly expressed in the cyst germinal membrane. Quantitative gene expression analysis(qPCR) of four genes confirmed the expression of these genes. EGR_08716 and its homologous gene (EmuJ_001137000) were highly and specifically expressed in adult worms of the two worms. Conclusions A total 19 and 23 KDPIs were identified in the genomes of E. multilocularis and E. granulosus s.s. , respectively. The differential expression of these KDPIs in different stages may indicate their different roles in the different hosts. The difference in characterization of KDPIs may be associated with the different pathology of metacestode stage of these two parasites. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-08219-4.
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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: 13] [Impact Index Per Article: 4.3] [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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Amahong K, Yan M, Li J, Yang N, Liu H, Bi X, Vuitton DA, Lin R, Lü G. EgGLUT1 Is Crucial for the Viability of Echinococcus granulosus sensu stricto Metacestode: A New Therapeutic Target? Front Cell Infect Microbiol 2021; 11:747739. [PMID: 34858873 PMCID: PMC8632494 DOI: 10.3389/fcimb.2021.747739] [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: 09/04/2021] [Accepted: 10/14/2021] [Indexed: 12/14/2022] Open
Abstract
Cystic echinococcosis (CE) is a zoonotic parasitic disease caused by infection with the larvae of Echinococcus granulosus sensu lato (s.l.) cluster. It is urgent to identify novel drug targets and develop new drug candidates against CE. Glucose transporter 1 (GLUT1) is mainly responsible for the transmembrane transport of glucose to maintain its constant cellular availability and is a recent research hotspot as a drug target in various diseases. However, the role of GLUT1 in E. granulosus s.l. (EgGLUT1) was unknown. In this study, we cloned a conserved GLUT1 homology gene (named EgGLUT1-ss) from E. granulosus sensu stricto (s.s.) and found EgGLUT1-ss was crucial for glucose uptake and viability by the protoscoleces of E. granulosus s.s. WZB117, a GLUT1 inhibitor, inhibited glucose uptake by E. granulosus s.s. and the viability of the metacestode in vitro. In addition, WZB117 showed significant therapeutic activity in E. granulosus s.s.-infected mice: a 10 mg/kg dose of WZB117 significantly reduced the number and weight of parasite cysts (P < 0.05) as efficiently as the reference drug, albendazole. Our results demonstrate that EgGLUT1-ss is crucial for glucose uptake by the protoscoleces of E. granulosus s.s., and its inhibitor WZB117 has a therapeutic effect on CE.
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Affiliation(s)
- Kuerbannisha Amahong
- 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.,College of Pharmacy, Xinjiang Medical University, Urumqi, China
| | - Mingzhi Yan
- 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.,College of Pharmacy, Xinjiang Medical University, Urumqi, China
| | - Jintian Li
- 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.,College of Pharmacy, Xinjiang Medical University, Urumqi, China
| | - Ning Yang
- 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
| | - Hui Liu
- 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
| | - Xiaojuan Bi
- 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
| | - Dominique A Vuitton
- French National Reference Centre for Echinococcosis, University Bourgogne Franche-Comté, Besançon, France
| | - 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.,WHO Collaborating Centre for Prevention and Care Management of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.,Basic Medical College, Xinjiang Medical University, Urumqi, China
| | - Guodong Lü
- 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.,College of Pharmacy, Xinjiang Medical University, Urumqi, China.,WHO Collaborating Centre for Prevention and Care Management of Echinococcosis, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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Benelli G. Green Synthesis of Nanomaterials and Their Biological Applications. NANOMATERIALS 2021; 11:nano11112842. [PMID: 34835605 PMCID: PMC8623734 DOI: 10.3390/nano11112842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 10/21/2021] [Indexed: 12/15/2022]
Affiliation(s)
- Giovanni Benelli
- Department of Agriculture, Food and Environment, University of Pisa, Via del Borghetto 80, 56124 Pisa, Italy
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Guo Y, Xu D, Fang Z, Xu S, Liu J, Xu Z, Zhou J, Bu Z, Zhao Y, He J, Yang X, Pan W, Shen Y, Sun F. Metabolomics Analysis of Splenic CD19 + B Cells in Mice Chronically Infected With Echinococcus granulosus sensu lato Protoscoleces. Front Vet Sci 2021; 8:718743. [PMID: 34552973 PMCID: PMC8450515 DOI: 10.3389/fvets.2021.718743] [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: 06/01/2021] [Accepted: 08/12/2021] [Indexed: 12/30/2022] Open
Abstract
Background: The larval stages of Echinococcus granulosus sensu lato (E. granulosus s.l) infection can alter B cell function and affect host anti-infective immunity, but the underlying mechanism remains unclear. The newly emerging immunometabolism highlights that several metabolites are key factors in determining the fate of immune cells, which provides a new insight for exploring how larval E. granulosus s.l. infection remodels B cell function. This study investigated the metabolomic profiles of B cells in mice infected with E. granulosus s.l. protoscoleces (PSC). Results:Total CD19+ B cells, purified from the spleen of infected mice, showed significantly increased production of IL-6, TNF-α, and IL-10 after exposure to LPS in vitro. Moreover, the mRNA expression of metabolism related enzymes in B cells was remarkably disordered post infection. In addition, differential metabolites were identified in B cells after infection. There were 340 differential metabolites (83 upregulated and 257 downregulated metabolites) identified in the positive ion model, and 216 differential metabolites (97 upregulated and 119 downregulated metabolites) identified in the negative ion mode. Among these, 64 differential metabolites were annotated and involved in 68 metabolic pathways, including thyroid hormone synthesis, the metabolic processes of glutathione, fructose, mannose, and glycerophospholipid. Furthermore, several differential metabolites such as glutathione, taurine, and inosine were validated to regulate the cytokine production in LPS stimulated B cells. Conclusion:Infection with the larval E. granulosus s.l. causes metabolic reprogramming in the intrinsic B cells of mice, which provides the first evidence for understanding the role and mechanism of B cells in parasite anti-infective immunity from the viewpoint of immunometabolism.
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Affiliation(s)
- Yuxin Guo
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Daxiang Xu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
| | - Zheng Fang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Shiping Xu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Jiaxi Liu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Zixuan Xu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Jikai Zhou
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Zhenzhen Bu
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Yingyi Zhao
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,The First Clinical Medical College, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Jingmei He
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China
| | - Xiaoying Yang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Wei Pan
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
| | - Yujuan Shen
- 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, China
| | - Fenfen Sun
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, China.,National Experimental Teaching Demonstration Center of Basic Medicine, Xuzhou Medical University, Xuzhou, China
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Santos KN, Viozzi GP, Flores VR. Dog care and parasitosis in a rural community of Patagonia: An integrative approach. VETERINARY PARASITOLOGY- REGIONAL STUDIES AND REPORTS 2021; 25:100583. [PMID: 34474807 DOI: 10.1016/j.vprsr.2021.100583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/18/2021] [Accepted: 05/06/2021] [Indexed: 11/24/2022]
Abstract
Human interaction with dogs can potentially lead to zoonoses. The aim of this integrative approach is to describe the relationship between dog parasites, dog care, and the human population of a rural Patagonian village. Surveys were carried out to evaluate owners' attitudes towards dogs, and coproparasitological and coproELISA analyses were performed to determine parasitic infection values. Fur samples and vegetable garden soil were also analyzed. A multivariate regression was performed to identify factors determining infection. All households owned at least one dog, of which only 54.9% had been dewormed in the past three months, and almost half of which were allowed to roam freely. Dogs with protozoan and helminth infections represented 68.8% of the total, 50% being parasitized by helminths of 7 species, including the zoonotic Toxocara canis, Uncinaria sp. Ancylostoma sp. and Echinococcus sp. All hair samples were negative, but 42.8% of vegetable gardens harbored Ancylostomatidae larvae. Statistical analyses indicated that the predictor "time since last deworming" explained infections by Cryptosporidium sp. and helminths, while the predictors "number of dogs per household", "sex", and "freedom to roam" explained the infections by helminths. This shows that the longer the time interval since the last deworming treatment, the greater the probability of a dog being infected by some type of parasite, either Cryptosporidium sp. or a helminth. On the other hand, the probability of being infected by helminths increased when there was more than one dog in the household. Furthermore, male dogs and dogs allowed to roam freely were more likely to be infected. Considering the inadequate care and sanitary status of dogs infected with zoonotic species, it is necessary to raise awareness of the need for responsible care of dogs.
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Affiliation(s)
- Karina N Santos
- Residente de Salud Pública Veterinaria de la Unidad Regional de Salud Ambiental, San Carlos de Bariloche, Ministerio de Salud de la Provincia de Río Negro, Río Negro, Argentina
| | - Gustavo P Viozzi
- Laboratorio de Parasitología, Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA) (Universidad Nacional del Comahue-CONICET), Río Negro, Argentina
| | - Verónica R Flores
- Laboratorio de Parasitología, Instituto de Investigaciones en Biodiversidad y Medioambiente (INIBIOMA) (Universidad Nacional del Comahue-CONICET), Río Negro, Argentina.
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do Carmo Neto JR, Guerra RO, Machado JR, Silva ACA, da Silva MV. Antiprotozoal and anthelmintic activity of zinc oxide nanoparticles. Curr Med Chem 2021; 29:2127-2141. [PMID: 34254904 DOI: 10.2174/0929867328666210709105850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 05/10/2021] [Accepted: 05/13/2021] [Indexed: 11/22/2022]
Abstract
Nanomaterials represent a wide alternative for the treatment of several diseases that affect both human and animal health. The use of these materials mainly involves trying to solve the problem of resistance that pathogenic organisms acquire to conventional drugs. A well-studied example that represents a potential component for biomedical applications is the use of zinc oxide (ZnO) nanoparticles (NPs). Its antimicrobial function is related, especially the ability to generate/induce ROS that affects the homeostasis of the pathogen in question. Protozoa and helminths that harm human health and the economic performance of animals have already been exposed to this type of nanoparticle. Thus, through this review, our goal is to discuss the state-of-the-art effect of ZnO NPs on these parasites.
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Affiliation(s)
- José Rodrigues do Carmo Neto
- Department of Bioscience and Technology, Institute of Tropical Pathology and Public Health, Federal University of Goias, 74605-450 Goiania, GO, Brazil
| | - Rhanoica Oliveira Guerra
- Department of Microbiology, Immunology and Parasitology, Institute of Biological and Natural Sciences of Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Juliana Reis Machado
- Department of General Pathology, Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
| | - Anielle Christine Almeida Silva
- Laboratório de Novos Materiais Nanoestruturados e Funcionais (LNMIS), Physics Institute, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Marcos Vinicius da Silva
- Department of Microbiology, Immunology and Parasitology, Institute of Biological and Natural Sciences of Federal University of Triângulo Mineiro, Uberaba, Minas Gerais, Brazil
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Zhu M, Du X, Xu H, Yang S, Wang C, Zhu Y, Zhang T, Zhao W. Metabolic profiling of liver and faeces in mice infected with echinococcosis. Parasit Vectors 2021; 14:324. [PMID: 34127037 PMCID: PMC8201681 DOI: 10.1186/s13071-021-04807-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 05/25/2021] [Indexed: 12/13/2022] Open
Abstract
Background Echinococcosis is a severe zoonotic parasitic disease which severely affects the health of the hosts. The diagnosis of echinococcosis depends mainly on imaging examination. However, the patient is often in the late stage of the disease when the symptoms appear, thus limiting the early diagnosis of echinococcosis. The treatment and prognosis of the patients are hampered because of long-term asymptomatic latency. Metabolomics is a new discipline developed in the late 1990s. It reflects a series of biological responses in pathophysiological processes by demonstrating the changes in metabolism under the influence of internal and external factors. When the organism is invaded by pathogens, the alteration in the characteristics of metabolites in cells becomes extremely sensitive. Here, we used a metabolomics approach involving liquid chromatography coupled with tandem mass spectrometry (LC–MS/MS) to determine the molecular mechanism of cystic echinococcosis (CE) and to develop an effective method for CE diagnosis. Methods Twenty 8-week-old female BALB/c mice were divided into normal and Echinococcus granulosus infection groups. To develop the E. granulosus infection model, mice were infected with protoscoleces. Six weeks later, the abdomens of the mice showed significant bulging. An LC–MS/MS system-based metabolomics approach was used to analyse the liver and faeces to reveal the metabolic profiles of mice with echinococcosis. Results We found that the metabolism of nucleotides, alkaloids, amino acids, amides, and organic acids in mice is closely interrelated with E. granulosus infection. In the liver, the metabolic pathways of tyrosine and tryptophan biosynthesis; phenylalanine, valine, leucine and isoleucine biosynthesis; and phenylalanine metabolism were notably associated with the occurrence and development of hydatid disease, and in the faeces, pantothenate and CoA biosynthesis are thought to be closely associated with the development of CE. Conclusion The metabolomics approach used in this study provides a reference for a highly sensitive and specific diagnostic and screening method for echinococcosis. Graphic Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04807-1.
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Affiliation(s)
- Mingxing Zhu
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Key Laboratory of Hydatid Disease of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Xiancai Du
- Key Laboratory of Hydatid Disease of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Hongxia Xu
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Key Laboratory of Hydatid Disease of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Songhao Yang
- Key Laboratory of Hydatid Disease of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Chan Wang
- Key Laboratory of Hydatid Disease of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Yazhou Zhu
- Key Laboratory of Hydatid Disease of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Tingrui Zhang
- Key Laboratory of Hydatid Disease of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Wei Zhao
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China. .,Key Laboratory of Hydatid Disease of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.
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Li Y, Zhu Y, Sha T, Chen Z, Yu M, Zhang F, Ding J. A Multi-Epitope Chitosan Nanoparticles Vaccine of Canine Against Echinococcus granulosus. J Biomed Nanotechnol 2021; 17:910-920. [PMID: 34082876 DOI: 10.1166/jbn.2021.3065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Cystic Echinococcosis (CE) is caused by Echinococcus granulosus (Eg), which endangers the health of the intermediate host. Therefore, effective canid vaccines against Eg infection are urgently needed to reduce the incidence of this disease. In the present work, the aim was to predict epitopes in four vaccine candidate antigens (VCAs) in Eg as a basis to design a multi-epitope canine-directed vaccine. This vaccine is based on chitosan nanoparticles (CS-NPs) and is directed against Eg infection in the definitive host. The canine-directed vaccine was designed based on Eg antigens EgM9, Eg_10196, EgA31 and EgG1Y162. Several tools in online servers were used to predict VCAs information, which was combined with B cell, CTL and Th epitopes. Considering that acquiring experimental information in canids is difficult, and that it may be possible to perform future experiments in mice, we predicted both canine and murine T cell epitopes. The multi-epitope vaccine was synthetically prepared by ionic crosslinking method, and CS-NPs was used as adjuvant. The mice were immunized by oral gavage and laser scanning confocal microscopy was used to localize the fluorescein- labeled multi-epitope peptide in the intestinal tract. The final multi-epitope vaccine was construct consist of Co1 targeting peptide, four B-cell epitopes, four canine-directed CTL epitopes and four murine-directed Th epitopes. It has been proven experimentally by this research that multi-epitope antigen concentration merged with microfold cells was high in the CS-NPs vaccine group. The present bioinformatics study is a first step towards the construction of a canine-specific multiepitope vaccine against Eg with twelve predicted epitopes. CS-NPs is a potential adjuvant with relatively safe penetration enhancement delivery and a potent immunostimulant.
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Affiliation(s)
- Yujiao Li
- School of Public Health, Xinjiang Medical University, Xinjiang 830011, PR China
| | - Yuejie Zhu
- Department of Blood Transfusion, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830011, PR China
| | - Tong Sha
- Department of Immunology, College of Basic Medicine, Xinjiang Medical University, Xinjiang 830011, PR China
| | - Zhiqiang Chen
- Department of Immunology, College of Basic Medicine, Xinjiang Medical University, Xinjiang 830011, PR China
| | - Mingkai Yu
- Department of Immunology, College of Basic Medicine, Xinjiang Medical University, Xinjiang 830011, PR China
| | - Fengbo Zhang
- Department of Clinical Laboratory, The First Affiliated Hospital of Xinjiang Medical University, Xinjiang 830011, PR China
| | - Jianbing Ding
- Department of Immunology, College of Basic Medicine, Xinjiang Medical University, Xinjiang 830011, PR China
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Wang C, Yang SH, Niu N, Tao J, Du XC, Yang JH, Zhu MX, Wang YN, Zhao W. lncRNA028466 regulates Th1/Th2 cytokine expression and associates with Echinococcus granulosus antigen P29 immunity. Parasit Vectors 2021; 14:295. [PMID: 34082780 PMCID: PMC8173744 DOI: 10.1186/s13071-021-04795-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 05/20/2021] [Indexed: 02/07/2023] Open
Abstract
Background Cystic echinococcosis (CE) is a parasitic disease that is caused by Echinococcus granulosus (Eg). The recombinant Echinococcus granulosus antigen P29 (rEg.P29) was shown to confer effective immunity to sheep and mice during E. granulosus secondary infection in our previous study. In this study, we sought to investigate the ability of long noncoding RNA 028466 (lncRNA028466) as a regulator for the protective immunity mediated by rEg.P29 vaccination and to study the effects of lncRNA028466 on CD4+T cell differentiation in mice spleen. Methods Female BALB/c mice were divided into two groups and were vaccinated subcutaneously with rEg.P29 antigen and PBS as a control (12 mice each group). Following prime-boost vaccination, CD4+T, CD8+T, and B cells from the spleen were isolated by flow cytometry. Quantitative real-time PCR (qRT-PCR) was performed to measure the expression of lncRNA028466 in these three kinds of cells. Then, lncRNA028466 was overexpressed and knocked down in naive CD4+T cells, and Th1 and Th2 cytokine expression was detected. qRT-PCR, western blot, and ELISA were performed to evaluate the production of IFN-γ, IL-2, IL-4, and IL-10, and flow cytometry was performed to detect the differentiation of Th1 and Th2 subgroups. Results lncRNA028466 was significantly decreased after the second week of immunization with rEg.P29 antigen. The proportion of CD4+ T cells was increased after rEg.P29 immunization. Overexpression of lncRNA028466 facilitated the production of IL-4, IL-10 and suppressed the production of IFN-γ, IL-2. Furthermore, after transfection with siRNA028466, IL-2 production was facilitated and IL-10 production was suppressed in naive CD4+ T cells. Conclusions Immunization with rEg.P29 downregulated the expression of lncRNA028466, which was related to a higher Th1 immune response and a lower Th2 immune response. Our results suggest that lncRNA028466 may be involved in rEg.P29-mediated immune response by regulating cytokine expression of Th1 and Th2. Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04795-2.
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Affiliation(s)
- Chan Wang
- Department of Medical genetics and Cell biology, School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Song-Hao Yang
- Department of Medical genetics and Cell biology, School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Nan Niu
- Department of Medical genetics and Cell biology, School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Jia Tao
- Department of Medical genetics and Cell biology, School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Xian-Cai Du
- Department of Medical genetics and Cell biology, School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Ji-Hui Yang
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Ming-Xing Zhu
- Department of Medical genetics and Cell biology, School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Center of Scientific Technology of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Ya-Na Wang
- Department of Medical genetics and Cell biology, School of Basic Medical Science of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.,Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China
| | - Wei Zhao
- Center of Scientific Technology of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China. .,Ningxia Key Laboratory of Prevention and Control of Common Infectious Diseases of Ningxia Medical University, Yinchuan, 750004, Ningxia Hui Autonomous Region, People's Republic of China.
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Uchiumi L, Mujica G, Araya D, Salvitti JC, Sobrino M, Moguillansky S, Solari A, Blanco P, Barrera F, Lamunier J, Arezo M, Seleiman M, Yadon ZE, Tamarozzi F, Casulli A, Larrieu E. Prevalence of human cystic echinococcosis in the towns of Ñorquinco and Ramos Mexia in Rio Negro Province, Argentina, and direct risk factors for infection. Parasit Vectors 2021; 14:262. [PMID: 34011406 PMCID: PMC8136178 DOI: 10.1186/s13071-021-04753-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 04/28/2021] [Indexed: 01/02/2023] Open
Abstract
Background Cystic echinococcosis (CE) is a parasitic zoonosis caused by infection with the larval stage of Echinococcus granulosus (s.l.). This study investigated the prevalence and potential risk factors associated with human CE in the towns and rural areas of Ñorquinco and Ramos Mexia, Rio Negro province, Argentina. Methods To detect abdominal CE cysts, we screened 892 volunteers by ultrasound and investigated potential risk factors for CE using a standardized questionnaire. Prevalence ratio (PR) with 95% confidence intervals (CI) was used to measure the association between CE and the factors investigated, applying bivariate and multivariate analyses. Results Abdominal CE was detected in 42/892 screened volunteers (4.7%, 95% CI 3.2–6.1), only two of whom were under 15 years of age. Thirteen (30.9%) CE cases had 25 cysts in active stages (CE1, CE2, CE3a, according to the WHO Informal Working Group on Echinococcosis [WHO-IWGE] classification). The most relevant risk factors identified in the bivariate analysis included: living in rural areas (P = 0.003), age > 40 years (P = 0.000), always drinking water from natural sources (P = 0.007), residing in rural areas during the first 5 years of life (P = 0.000) and having lived more than 20 years at the current address (P = 0.013). In the multivariate final model, the statistically significant risk factors were: frequently touching dogs (P = 0.012), residing in rural areas during the first 5 years of life (P = 0.004), smoking (P = 0.000), age > 60 years (P = 0.002) and living in rural areas (P = 0.017). Conclusions Our results point toward infection with CE being acquired since childhood and with constant exposure throughout life, especially in rural areas with a general environmental contamination. Graphic Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04753-y.
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Affiliation(s)
- Leonardo Uchiumi
- Hospital "Artémides Zatti", Viedma, Provincia de Río Negro, Argentina
| | - Guillermo Mujica
- Coordinación de Salud Ambiental, Ministerio de Salud, Viedma, Provincia de Rio Negro, Argentina
| | - Daniel Araya
- Coordinación de Salud Ambiental, Ministerio de Salud, Viedma, Provincia de Rio Negro, Argentina
| | - Juan Carlos Salvitti
- Hospital "Ramón Carrillo", San Carlos de Bariloche, Provincia de Río Negro, Argentina
| | - Mariano Sobrino
- Hospital "Ramón Carrillo", San Carlos de Bariloche, Provincia de Río Negro, Argentina
| | - Sergio Moguillansky
- Facultad de Medicina, Universidad del Comahue, Cipolletti, Provincia de Río Negro, Argentina
| | - Alejandro Solari
- Hospital "Raul Fernicola", Valcheta, Provincia de Rio Negro, Argentina
| | - Patricia Blanco
- Coordinación de Salud Ambiental, Ministerio de Salud, Viedma, Provincia de Rio Negro, Argentina
| | - Fabiana Barrera
- Hospital Area Programa de Ramos Mexia, Ministro Ramos Mexía, Argentina
| | | | - Marcos Arezo
- Coordinación de Salud Ambiental, Ministerio de Salud, Viedma, Provincia de Rio Negro, Argentina
| | - Marcos Seleiman
- Coordinación de Salud Ambiental, Ministerio de Salud, Viedma, Provincia de Rio Negro, Argentina
| | - Zaida E Yadon
- Instituto de Investigaciones Epidemiológicas, Academia Nacional de Medicina, Buenos Aires, Argentina
| | - Francesca Tamarozzi
- WHO Collaborating Centre for the Epidemiology, Detection and Control of Cystic and Alveolar Echinococcosis, Department of Infectious Diseases, Istituto Superiore Di Sanità, Rome, Italy
| | - Adriano Casulli
- WHO Collaborating Centre for the Epidemiology, Detection and Control of Cystic and Alveolar Echinococcosis, Department of Infectious Diseases, Istituto Superiore Di Sanità, Rome, Italy.,European Union Reference Laboratory for Parasites, Department of Infectious Diseases, Istituto Superiore Di Sanità, Rome, Italy
| | - Edmundo Larrieu
- Facultad de Ciencias Veterinarias, Universidad Nacional de La Pampa, General Pico, Provincia de La Pampa, Argentina. .,Escuela de Veterinaria, Universidad Nacional de Rio Negro, Choele Choel, Provincia de Rio Negro, Argentina.
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Amarir F, Rhalem A, Sadak A, Raes M, Oukessou M, Saadi A, Bouslikhane M, Gauci CG, Lightowlers MW, Kirschvink N, Marcotty T. Control of cystic echinococcosis in the Middle Atlas, Morocco: Field evaluation of the EG95 vaccine in sheep and cesticide treatment in dogs. PLoS Negl Trop Dis 2021; 15:e0009253. [PMID: 33684115 PMCID: PMC7971873 DOI: 10.1371/journal.pntd.0009253] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 03/18/2021] [Accepted: 02/18/2021] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Cystic echinococcosis (CE) is an important cause of human morbidity and mortality worldwide, particularly in Morocco and other North African countries. METHODOLOGY/PRINCIPAL FINDINGS We investigated the potential of three strategies to reduce Echinococcus granulosus transmission: (1) 4-monthly treatment of dogs with praziquantel, (2) vaccination of sheep with the EG95 vaccine and (3) a combination of both measures. These measures were implemented during four consecutive years in different areas of the Middle Atlas Mountains in Morocco. The outcome of the interventions was assessed through hydatid cyst (viable and non-viable) counts in liver and lungs using necropsy or in vivo ultrasound examination of the liver. A total of 402 lambs were recruited for annual vaccination with the EG95 anti-E. granulosus vaccine and 395 similar lambs were selected as non-vaccinated controls. At approximately four years of age the relative risk (estimated as odds ratio) for vaccinated sheep to have viable hydatid cysts compared with non-vaccinated controls was 3% (9.37% of the vaccinated sheep were found infected while 72.82% of the controls were infected; p = 0.002). The number of viable cysts in vaccinated animals was reduced by approximately 97% (mean counts were 0.28 and 9.18 respectively; p<0.001). An average of 595 owned dogs received 4-monthly treatment during the 44 months trial, corresponding to 91% of the owned dog population. Approximately, 5% of them were examined for E. granulosus adult worms by arecoline purge or eggs in feces (confirmed by PCR). The proportion of infected dogs significantly decreased after treatment (12% versus 35%; p<0.001). Post-treatment incidence of re-infestation corresponded to a monthly risk of 4% (95% CI: 3-6%). Treatment of owned dogs on a 4-monthly basis did not reduce the level of transmission of E. granulosus to sheep, nor did it enhance the level of control generated by vaccination of sheep with EG95, possibly because of unowned dogs and wild canids were not treated. CONCLUSIONS/SIGNIFICANCE These data suggest that vaccination of sheep with EG95 has the potential to reduce the level of CE in Morocco and in other parts of the world with similar transmission dynamics. Under the epidemiological circumstances existing in the trial area, 4-monthly treatment of owned dogs with praziquantel was insufficient to have a major impact of E. granulosus transmission to sheep.
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Affiliation(s)
- Fatimaezzahra Amarir
- Laboratory of Parasitology, Department of Pathology and Veterinary Public Health, Hassan II Agronomy and Veterinary Institute (IAV), Rabat, Morocco
- Integrated Veterinary Research Unit, Department of Veterinary Medicine, Namur Research Institute for Life Sciences (NARILIS), University of Namur, Belgium
- Laboratory of Zoology and General Biology, Parasitological and Ecological Unit, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Abdelkbir Rhalem
- Laboratory of Parasitology, Department of Pathology and Veterinary Public Health, Hassan II Agronomy and Veterinary Institute (IAV), Rabat, Morocco
| | - Abderrahim Sadak
- Laboratory of Zoology and General Biology, Parasitological and Ecological Unit, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Marianne Raes
- Integrated Veterinary Research Unit, Department of Veterinary Medicine, Namur Research Institute for Life Sciences (NARILIS), University of Namur, Belgium
| | - Mohamed Oukessou
- Unit of Physiology and Therapeutics, Department of Veterinary Biological and Pharmaceutical Sciences, Hassan II Agronomic and Veterinary Institute, Rabat, Morocco
| | - Aouatif Saadi
- Laboratory of Parasitology, Department of Pathology and Veterinary Public Health, Hassan II Agronomy and Veterinary Institute (IAV), Rabat, Morocco
- Fundamental and Applied Research for Animals and Health (FARAH), University of Liège, Liège, Belgium
| | - Mohammed Bouslikhane
- Laboratory of Parasitology, Department of Pathology and Veterinary Public Health, Hassan II Agronomy and Veterinary Institute (IAV), Rabat, Morocco
| | - Charles G. Gauci
- Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Australia
| | | | - Nathalie Kirschvink
- Integrated Veterinary Research Unit, Department of Veterinary Medicine, Namur Research Institute for Life Sciences (NARILIS), University of Namur, Belgium
| | - Tanguy Marcotty
- Integrated Veterinary Research Unit, Department of Veterinary Medicine, Namur Research Institute for Life Sciences (NARILIS), University of Namur, Belgium
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44
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Shams M, Javanmardi E, Nosrati MC, Ghasemi E, Shamsinia S, Yousefi A, Kordi B, Majidiani H, Nourmohammadi H. Bioinformatics features and immunogenic epitopes of Echinococcus granulosus Myophilin as a promising target for vaccination against cystic echinococcosis. INFECTION GENETICS AND EVOLUTION 2021; 89:104714. [PMID: 33434702 DOI: 10.1016/j.meegid.2021.104714] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/27/2020] [Accepted: 01/06/2021] [Indexed: 10/22/2022]
Abstract
Cystic echinococcosis (CE) is a neglected zoonosis especially in underdeveloped countries around the world. Hence, immunization strategies are beneficial to avert the infection. The present investigation was aimed to predict the primary biochemical characteristics of the EgMyophilin and its potential B-cell and human leukocyte antigen (HLA)-binding epitopes as a promising vaccine candidate. Different web servers were used to predict physico-chemical, antigenic and allergenic profiles, transmembrane domain, subcellular localization, post-translational modification (PTM) sites, secondary and 3D structure, tertiary model refinement and validations. B-cell and HLA-binding epitopes were predicted and screened in terms antigenicity, allergenicity, solubility (B-cell) or hydrophobicity (T-cell). The 89.82 KDa protein was non-allergenic, hydrophilic, stable, with improved thermotolerance and 94 post-translational modification sites. The secondary structure included 42.94% alpha helix, 42.82% random coil and 41.23% extended strand. Based on Ramachandran plot output for refined model, 96.2%, 99.5%, and 0.45% of amino acid residues were incorporated in the favored, allowed, and outlier regions of the refined model, respectively. After epitope screening, four B-cell and five HLA-binding epitopes possessed the highest antigenic index in the protein sequence. This paper is a premise for further researches, and provides insights for the development of a suitable vaccine against CE. More empirical studies are required using the EgMyophilin alone or in combination with other antigens/epitopes in the future.
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Affiliation(s)
- Morteza Shams
- Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Erfan Javanmardi
- Clinical Research Development Center, "The Persian Gulf Martyrs" Hospital, Bushehr, University of Medical Sciences, Bushehr, Iran
| | | | - Ezatollah Ghasemi
- Department of Medical Parasitology, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran
| | - Sadegh Shamsinia
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ali Yousefi
- Students Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Bahareh Kordi
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran; Department of Pathobiology, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Hamidreza Majidiani
- Department of Basic Medical Sciences, Neyshabur University of Medical Sciences, Neyshabur, Iran.
| | - Hassan Nourmohammadi
- Zoonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran; Department of Internal Medicine, Shahid Mostafa Khomeini Hospital, Ilam University of Medical Sciences, Ilam, Iran.
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45
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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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46
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Review on Epidemiology and Public Health Significance of Hydatidosis. Vet Med Int 2020; 2020:8859116. [PMID: 33354312 PMCID: PMC7735834 DOI: 10.1155/2020/8859116] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 11/16/2020] [Accepted: 11/20/2020] [Indexed: 11/24/2022] Open
Abstract
Hydatidosis is a zoonotic parasitic disease caused by larval stages (hydatid cysts) of cestodes belonging to the genus Echinococcus and the family Taeniidae. Hydatid cyst, which is the larval stage of Echinococcus, is a bladder-like cyst formed in various organs and tissues following the growth of the oncospheres of an Echninoccus tape worm in that specific organ or tissue. The epidemiology and control of hydatidosis is often considered to be a veterinary matter since the disease can be regulated by controlling parasites in animals. However, collaboration between veterinarians and public health workers is essential for the successful control of hydotidosis. Therefore, the objective of this paper was to review The epidemiology, economic and public health importance of hydatidosis. The developmental stage of Echinococcus is that eggs develop to oncospheres, this oncospheres develop to hydatid cyst in the intermediate host and the hydatid cyst if consumed by final host develops to the adult Echinococcus. Human echinococcosis is a zoonotic infection caused by the tape worm of the genus Echinococcus. Echinococcus granucosus granulosis cause cystic echinococcosis (CE), Echinococcus multilocularis cause alveolar echinoloccosis (AE), and Echinococcus vogeli and Echinococcus oligarthus cause polycystic echinococcosis (PE). From these Echinococcus mulitilocularis is rare but is the most virulent, Echinococcus vegeli and Echinococcus oligarthus are the rarest. Hydatidosis is a zoonotic cosmopolitan parasitic disease found in almost all countries of the world. This disease causes a significant economic loss directly by causing organ or carcass condemnation and indirectly by affecting human and animal health which increase the cost for diagnosis, treatment and control of the disease. Public awareness creation about the transmission and control of the disease and its public health significance and collaboration between veterinarians and public health workers in the prevention and control of the disease is mandatory.
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47
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Avendaño C, Patarroyo MA. Loop-Mediated Isothermal Amplification as Point-of-Care Diagnosis for Neglected Parasitic Infections. Int J Mol Sci 2020; 21:ijms21217981. [PMID: 33126446 PMCID: PMC7662217 DOI: 10.3390/ijms21217981] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 12/13/2022] Open
Abstract
The World Health Organisation (WHO) has placed twenty diseases into a group known as neglected tropical diseases (NTDs), twelve of them being parasitic diseases: Chagas’ disease, cysticercosis/taeniasis, echinococcosis, food-borne trematodiasis, human African trypanosomiasis (sleeping sickness), leishmaniasis, lymphatic filariasis, onchocerciasis (river blindness), schistosomiasis, soil-transmitted helminthiasis (ascariasis, hookworm, trichuriasis), guinea-worm and scabies. Such diseases affect millions of people in developing countries where one of the main problems concerning the control of these diseases is diagnosis-based due to the most affected areas usually being far from laboratories having suitable infrastructure and/or being equipped with sophisticated equipment. Advances have been made during the last two decades regarding standardising and introducing techniques enabling diagnoses to be made in remote places, i.e., the loop-mediated isothermal amplification (LAMP) technique. This technique’s advantages include being able to perform it using simple equipment, diagnosis made directly in the field, low cost of each test and the technique’s high specificity. Using this technique could thus contribute toward neglected parasite infection (NPI) control and eradication programmes. This review describes the advances made to date regarding LAMP tests, as it has been found that even though several studies have been conducted concerning most NPI, information is scarce for others.
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Affiliation(s)
- Catalina Avendaño
- Animal Science Faculty, Universidad de Ciencias Aplicadas y Ambientales (U.D.C.A.), Bogotá 111166, Colombia;
| | - Manuel Alfonso Patarroyo
- Molecular Biology and Immunology Department, Fundación Instituto de Inmunología de Colombia (FIDIC), Bogotá 111321, Colombia
- Basic Sciences Department, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá 112111, Colombia
- Correspondence: ; Tel.: +57-1-3244672
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Hombo H, Oyarzo M, Álvarez C, Cuadros N, Hernández F, Ward MP, Acosta-Jamett G. Spatial epidemiology of cystic echinococcosis in livestock from a hyper-endemic region in southern Chile. Vet Parasitol 2020; 287:109258. [PMID: 33075729 DOI: 10.1016/j.vetpar.2020.109258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 09/26/2020] [Accepted: 09/27/2020] [Indexed: 10/23/2022]
Abstract
Cystic echinococcosis (CE) is a parasitic zoonosis, caused by the larval stage of Echinococcus granulosus. This disease has a worldwide distribution and is considered an important zoonosis in Chile, especially in regions where raising livestock dominates. We aimed to describe the spatial distribution and risk factors for CE in cattle and sheep slaughtered in the Aysén Region, Chile between 2015 and 2016, to inform disease control in this hyper-endemic region. Clustering and hotspot analyses of CE at the farm-level were performed (Moran's global index, local indicator of spatial autocorrelation (LISA), and the scan statistic Poisson model), and we used spatial interpolation to display areas with a higher risk of CE. Mixed effects logistic regression models were fit to assess the association between municipality of origin and age of animals and CE detected at slaughter, with the farm of origin included as a random effect. Overall, data from 1532 cattle farms (1078 geocoded) and 30,805 cattle were analyzed, with a 64 % and 39 % CE prevalence at the farm and animal-level, respectively. For sheep farms, data from 381 (296 geocoded) farms and 58,223 sheep were analyzed, with a 71 % and 18 % CE prevalence at the farm and animal-level, respectively. Globally, the CE prevalence in both cattle and sheep farms was not clustered. However, we found 14 cattle and 23 sheep farms with high prevalence that were locally clustered. We also detected 6 and 11 clusters in cattle and sheep farms, respectively. Risk of reported CE varied according to municipalities of origin, and the age of animals. This study confirms that the Aysén region is a hyper-endemic region for CE. It demonstrates the usefulness of the traceability of animals slaughtered for understanding the epidemiology of CE. The results suggest that in this hyper-endemic region in which there are limited financial resources available, that intervention activities - at the beginning of a control program - should be focused on farms with high prevalence and identified disease clusters.
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Affiliation(s)
- Hamilton Hombo
- Instituto de Medicina Preventiva Veterinaria, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile; Escuela de Graduados, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Miguel Oyarzo
- Unidad de Zoonosis, Secretaría Regional Ministerial de Salud, Región de Aysén, Coyhaique, Chile
| | - Claudia Álvarez
- Unidad de Zoonosis, Secretaría Regional Ministerial de Salud, Región de Aysén, Coyhaique, Chile
| | - Natalia Cuadros
- Instituto de Medicina Preventiva Veterinaria, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Felipe Hernández
- Instituto de Medicina Preventiva Veterinaria, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Michael P Ward
- Sydney School of Veterinary Science, The University of Sydney, 425 Werombi Road, Private Mailbag 4003, Narellan, NSW, 2567, Australia
| | - Gerardo Acosta-Jamett
- Instituto de Medicina Preventiva Veterinaria, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile; Programa de investigación Aplicada en Fauna Silvestre, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile.
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49
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MiR-374b-5p Regulates T Cell Differentiation and Is Associated with rEg.P29 Immunity. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8024763. [PMID: 32908913 PMCID: PMC7463394 DOI: 10.1155/2020/8024763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 07/23/2020] [Indexed: 11/18/2022]
Abstract
Cystic echinococcosis (CE) is a zoonotic disease caused by Echinococcus granulosus (Eg) infection. Our previous study confirmed that recombinant Eg.P29 (rEg.P29) could protect against echinococcus granulosus secondary infection in sheep and mice. The aim of the study was to investigate the association between immunoprotection of rEg.P29 vaccine and mmu-miR-374b-5p (miR-374b-5p) and study the immunity influence of miR-374b-5p on CD4+ T cells in mice spleen. MiR-374b-5p level was significantly increased after the second-week and the fourth week of vaccination with rEg.P29. Overexpression of miR-374b-5p increased IFN-γ, IL-2, IL-17A mRNA levels and decreased IL-10 mRNA levels in CD4+ T cells. Moreover, the inhibition of miR-374b-5p decreased IFN-γ and IL-17A and increased IL-10 mRNA levels in CD4+ T cells; this was further confirmed by the flow cytometry. The vaccination of rEg.P29 enhanced miR-374b-5p expression that was associated with a higher Th1 and Th17 immune response, a lower IL-10 mRNA production with miR-374b-5p overexpression, a lower Th1 immune response, and a higher IL-10 mRNA levels with miR-374b-5p inhibitions. To sum up, these data suggest that miR-374b-5p may participate in rEg.P29 immunity by regulating Th1 and Th17 differentiation.
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50
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Anvari D, Rezaei F, Ashouri A, Rezaei S, Majidiani H, Pagheh AS, Rezaei F, Shariatzadeh SA, Fotovati A, Siyadatpanah A, Gholami S, Ahmadpour E. Current situation and future prospects of Echinococcus granulosus vaccine candidates: A systematic review. Transbound Emerg Dis 2020; 68:1080-1096. [PMID: 32762075 DOI: 10.1111/tbed.13772] [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] [Received: 05/19/2020] [Revised: 07/20/2020] [Accepted: 08/01/2020] [Indexed: 12/14/2022]
Abstract
Cystic echinococcosis is a worldwide zoonotic disease, represents a threat for livestock and humans, manifests as a quiescent, subclinical and chronic hydatid cyst infection. The disease imposes high expenditures and economic losses in medical and veterinary. Prophylactic vaccination would be one of the effective preventive health care against echinococcosis. During the last decades, many studies have characterized the protective antigens of Echinococcus granulosus and their role in immunization of various animal host species. Herein, we aimed to systematically evaluate and represent the best antigens as possible vaccine candidates for cystic echinococcosis. Data were systematically searched from five databases including ProQuest, PubMed, Scopus, ScienceDirect and Web of Science, up to 1 February 2020. Two reviewers independently screened and assessed data extraction and quality assessment. A total of 47 articles were eligible for inclusion criteria in the current study. The most common antigens used for vaccination against E. granulosus were EG95 and antigen B. Freund's adjuvant and Quil A have been predominantly utilized. In addition, regarding the antigen delivery, animal models, measurement of immune responses and reduction in hydatid cyst have been discussed in the text. The data demonstrated that DNA vaccines with antigen B and recombinant protein vaccines based on EG95 antigen have the best results and elicited protective immune responses.
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Affiliation(s)
- Davood Anvari
- Student Research Committee, Mazandaran University of Medical Science, Sari, Iran.,Department of Parasitology, School of Medicine, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran.,School of Medicine, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Fatemeh Rezaei
- Faculty of Modern Sciences and Technologies, Islamic Azad University of Medical Sciences, Tehran, Iran
| | - Alireza Ashouri
- Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Saeed Rezaei
- Faculty of Veterinary Medicine, Islamic Azad University, Karaj, Iran
| | - Hamidreza Majidiani
- Zonotic Diseases Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Abdol Sattar Pagheh
- Infectious Disease Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Fatemeh Rezaei
- Department of Parasitology, School of Medicine, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Seyyed Ali Shariatzadeh
- Student Research Committee, Mazandaran University of Medical Science, Sari, Iran.,Department of Parasitology, School of Medicine, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Amir Fotovati
- Faculty of Veterinary Medicine, University of Zabol, Zabol, Iran
| | | | - Shirzad Gholami
- Department of Parasitology, School of Medicine, Toxoplasmosis Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ehsan Ahmadpour
- Infectious and Tropical Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Parasitology and Mycology, Tabriz University of Medical Sciences, Tabriz, Iran
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