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Wang L, Wang Z, Qin M, Lei J, Cheng X, Yan J, Gavotte L, Frutos R. A regressive analysis of the main environmental risk factors of human echinococcosis in 370 counties in China. PLoS Negl Trop Dis 2024; 18:e0012131. [PMID: 38743784 PMCID: PMC11125469 DOI: 10.1371/journal.pntd.0012131] [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: 10/25/2023] [Revised: 05/24/2024] [Accepted: 03/31/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Echinococcosis is a natural focal, highly prevalent disease in China. Factors influencing the spread of echinococcosis are not only related to personal exposure but also closely related to the environment itself. The purpose of this study was to explore the influence of environmental factors on the prevalence of human echinococcosis and to provide a reference for prevention and control of echinococcosis in the future. METHODS Data were collected from 370 endemic counties in China in 2018. By downloading Modis, DEM and other remote-sensing images in 2018. Data on environmental factors, i.e., elevation, land surface temperature (LST) and normalized difference vegetation index (NDVI) were collected. Rank correlation analysis was conducted between each environmental factor and the prevalence of echinococcosis at the county level. Negative binomial regression was used to analyze the impact of environmental factors on the prevalence of human echinococcosis at the county level. RESULTS According to rank correlation analysis, the prevalence of human echinococcosis in each county was positively correlated with elevation, negatively correlated with LST, and negatively correlated with NDVI in May, June and July. Negative binomial regression showed that the prevalence of human echinococcosis was negatively correlated with annual LST and summer NDVI, and positively correlated with average elevation and dog infection rate. The prevalence of human cystic echinococcosis was inversely correlated with the annual average LST, and positively correlated with both the average elevation and the prevalence rate of domestic animals. The prevalence of human alveolar echinococcosis was positively correlated with both NDVI in autumn and average elevation, and negatively correlated with NDVI in winter. CONCLUSION The prevalence of echinococcosis in the population is affected by environmental factors. Environmental risk assessment and prediction can be conducted in order to rationally allocate health resources and improve both prevention and control efficiency of echinococcosis.
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Affiliation(s)
- Liying Wang
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention; Chinese Centre for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Centre for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, People’s Republic of China
- Cirad, UMR 17, Intertryp, Montpellier, France
- Espace-Dev, University of Montpellier, Montpellier, France
| | - Zhiyi Wang
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention; Chinese Centre for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Centre for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, People’s Republic of China
| | - Min Qin
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention; Chinese Centre for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Centre for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, People’s Republic of China
| | - Jiaxi Lei
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention; Chinese Centre for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Centre for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, People’s Republic of China
| | - Xixi Cheng
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention; Chinese Centre for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Centre for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, People’s Republic of China
| | - Jun Yan
- Chinese Centre for Disease Control and Prevention, Beijing, China
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Yang Y, Wuren T, Wu B, Cheng S, Fan H. The expression of CTLA-4 in hepatic alveolar echinococcosis patients and blocking CTLA-4 to reverse T cell exhaustion in Echinococcus multilocularis-infected mice. Front Immunol 2024; 15:1358361. [PMID: 38605966 PMCID: PMC11007148 DOI: 10.3389/fimmu.2024.1358361] [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: 12/19/2023] [Accepted: 03/11/2024] [Indexed: 04/13/2024] Open
Abstract
Alveolar echinococcosis (AE) is a zoonotic parasitic disease caused by the infection of Echinococcus multilocularis (E. multilocularis) larvae. Cytotoxic T-lymphocyte antigen 4 (CTLA-4) produces inhibitory signals and induces T cell exhaustion, thereby inhibiting the parasiticidal efficacy of the liver immune system. Therefore, the purpose of this study is to explore how T-cell exhaustion contributes to AE and whether blocking CTLA-4 could reverse T cell exhaustion. Here we discovered that the expression of CTLA-4 was increased in the infiltrating margin around the lesion of the liver from AE patients by using western blot and immunohistochemistry assay. Multiple fluorescence immunohistochemistry identified that CTLA-4 and CD4/CD8 molecules were co-localized. For in vitro experiments, it was found that the sustained stimulation of E. multilocularis antigen could induce T cell exhaustion, blocking CTLA-4-reversed T cell exhaustion. For in vivo experiments, the expression of CTLA-4 was increased in the liver of E. multilocularis-infected mice, and the CTLA-4 and CD4/CD8 molecules were co-localized. Flow cytometry analysis demonstrated that the percentages of both CD4+ T cells and CD8+ T cells in the liver and peripheral blood were significantly increased and induced T exhaustion. When the mice were treated with anti-CTLA-4 antibodies, the number and weight of the lesions decreased significantly. Meanwhile, the flow cytometry results suggested that blocking CTLA-4 could effectively reverse T cell exhaustion and reactivate immune function. Our work reveals that blocking CTLA-4 could effectively reverse the T cell exhaustion caused by E. multilocularis and could be used as a novel target for the treatment of AE.
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Affiliation(s)
- Yuxuan Yang
- Research Center for High Altitude Medicine, Qinghai University, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Laboratory for High Altitude Medicine of Qinghai Province, Xining, Qinghai, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai University, Xining, Qinghai, China
| | - Tana Wuren
- Research Center for High Altitude Medicine, Qinghai University, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Laboratory for High Altitude Medicine of Qinghai Province, Xining, Qinghai, China
| | - Binjie Wu
- Research Center for High Altitude Medicine, Qinghai University, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Laboratory for High Altitude Medicine of Qinghai Province, Xining, Qinghai, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai University, Xining, Qinghai, China
| | - Shilei Cheng
- Research Center for High Altitude Medicine, Qinghai University, Key Laboratory of High Altitude Medicine (Ministry of Education), Key Laboratory of Application and Foundation for High Altitude Medicine Research in Qinghai Province (Qinghai-Utah Joint Research Key Lab for High Altitude Medicine), Laboratory for High Altitude Medicine of Qinghai Province, Xining, Qinghai, China
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai University, Xining, Qinghai, China
| | - Haining Fan
- Qinghai Research Key Laboratory for Echinococcosis, Qinghai University, Xining, Qinghai, China
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Xining, Qinghai, China
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文 家, 王 奇, 费 帆, 廖 晓, 陈 勇, 袁 莉, 陈 增, 陈 隆, 徐 如, 刘 进. [Clinical Features and Surgical Outcomes of 15 Cases of Intracranial Alveolar Echinococcosis]. SICHUAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF SICHUAN UNIVERSITY. MEDICAL SCIENCE EDITION 2023; 54:1250-1255. [PMID: 38162060 PMCID: PMC10752774 DOI: 10.12182/20231160603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Indexed: 01/03/2024]
Abstract
Objective To investigate the surgical treatment strategy of intracranial alveolar echinococcosis (AE) and the clinical outcomes. Methods The clinical and follow-up data of 15 intracranial AE patients who underwent surgical treatment in the Departments of Neurosurgery of Sichuan Provincial People's Hospital (SPPH) and People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture (a branch hospital of SPPH) between March 2017 and January 2021 were retrospectively analyzed. Full follow-up data were available for each of the 15 cases. The clinical and imaging characteristics, general surgical information, and surgical outcomes were analyzed. Results In the 15 patients, there were a total of 50 intracranial lesions, with an average of (3.3±3.1)/case. Four cases had solitary intracranial lesions, while 11 cases had multiple lesions, with the number of intracranial lesions per case ranging from 2 to 13. All patients with solitary intracranial lesions received total resection. In 6 patients with multiple intracranial lesions, only the largest lesion was surgically removed, and in 5 patients, 2 to 3 adjacent lesions were surgically removed. All but one patient had extracranial lesions in their liver, lungs, kidneys, adrenal glands, and thoracic vertebrae. The patients were followed up for 12 to 58 months after surgery, with the mean follow-up time being (28.1±13.4) months. Among the 15 cases, 13 showed stable intracranial condition during postoperative follow-up. Intracranial lesions recurred in 2 patients who had deep lesions accompanied by dissemination to the subarachnoid space. Two patients died during follow-up. Conclusion Microsurgical treatment of intracranial AE is effective, but total surgical resection is difficult to accomplish when patients have echinococcosis lesions located at a depth, especially when the lesions are spreading to the subarachnoid space. The prognosis of patients is closely associated with the extent of lesion invasion and the control of systemic hydatid lesions, especially those in the liver.
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Affiliation(s)
- 家智 文
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
| | - 奇 王
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
| | - 帆 费
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
| | - 晓灵 廖
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
| | - 勇 陈
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
| | - 莉 袁
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
| | - 增雄 陈
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
| | - 隆益 陈
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
| | - 如祥 徐
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
| | - 进平 刘
- 阿坝藏族羌族自治州人民医院 神经外科 (马尔康 624000)Department of Neurosurgery, People's Hospital of Aba Tibetan and Qiang Autonomous Prefecture, Maerkang 624000, China
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Jiang H, Wang X, Guo L, Tan X, Gui X, Liao Z, Li Z, Chen X, Wu X. Effect of sunitinib against Echinococcus multilocularis through inhibition of VEGFA-induced angiogenesis. Parasit Vectors 2023; 16:407. [PMID: 37936208 PMCID: PMC10631006 DOI: 10.1186/s13071-023-05999-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 10/04/2023] [Indexed: 11/09/2023] Open
Abstract
BACKGROUND Alveolar echinococcosis (AE) is a lethal zoonosis caused by the fox tapeworm Echinococcus multilocularis. The disease is difficult to treat, and an effective therapeutic drug is urgently needed. Echinococcus multilocularis-associated angiogenesis is required by the parasite for growth and metastasis; however, whether antiangiogenic therapy is effective for treating AE is unclear. METHODS The in vivo efficacy of sunitinib malate (SU11248) was evaluated in mice by secondary infection with E. multilocularis. Enzyme-linked immunosorbent assays (ELISAs) were used to evaluate treatment effects on serum IL-4 and vascular endothelial growth factor A (VEGFA) levels after SU11248 treatment. Gross morphological observations and immunohistochemical staining were used to evaluate the impact of SU11248 on angiogenesis and the expression of pro-angiogenic factors VEGFA and VEGF receptor 2 (VEGFR2) in the metacestode tissues. Furthermore, the anthelmintic effects of SU11248 were tested on E. multilocularis metacestodes in vitro. The effect of SU11248 on the expression of VEGFA, VEGFR2, and phosphorylated VEGFR2 (p-VEGFR2) in liver cells infected with protoscoleces in vitro was detected by western blotting, reverse transcription quantitative polymerase chain reaction (RT-qPCR), and enzyme-linked immunosorbent assay (ELISA). The influence of SU11248 on endothelial progenitor cell (EPC) proliferation and migration was determined using CCK8 and transwell assays. RESULTS In vivo, SU11248 treatment markedly reduced neovascular lesion formation and substantially inhibited E. multilocularis metacestode growth in mice. Further, it exhibited high anti-hydatid activity as efficiently as albendazole (ABZ), and the treatment resulted in reduced protoscolex development. In addition, VEGFA, VEGFR2, and p-VEGFR2 expression was significantly decreased in the metacestode tissues after SU11248 treatment. However, no effect of SU11248 on serum IL-4 levels was observed. In vitro, SU11248 exhibited some anthelmintic effects and damaged the cellular structure in the germinal layer of metacestodes at concentrations below those generally considered acceptable for treatment (0.12-0.5 μM). Western blotting, RT-qPCR, and ELISA showed that in co-cultured systems, only p-VEGFR2 levels tended to decrease with increasing SU11248 concentrations. Furthermore, SU11248 was less toxic to Reuber rat hepatoma (RH) cells and metacestodes than to EPCs, and 0.1 μM SU11248 completely inhibited EPC migration to the supernatants of liver cell and protoscolex co-cultures. CONCLUSIONS SU11248 is a potential candidate drug for the treatment of AE, which predominantly inhibits parasite-induced angiogenesis. Host-targeted anti-angiogenesis treatment strategies constitute a new avenue for the treatment of AE.
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Affiliation(s)
- Huijiao Jiang
- National Health Commission of the People's Republic of China Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Xiaoyi Wang
- National Health Commission of the People's Republic of China Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Lijiao Guo
- National Health Commission of the People's Republic of China Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Xiaowu Tan
- National Health Commission of the People's Republic of China Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Xianwei Gui
- National Health Commission of the People's Republic of China Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Zhenyu Liao
- Department of Immunology, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
- Department of Experimental Medicine, Jintang First People's Hospital West China Hospital Sichuan University Jintang Hospital, Chengdu, 610400, Sichuan, China
| | - Zhiwei Li
- National Health Commission of the People's Republic of China Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China
| | - Xueling Chen
- Department of Immunology, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China.
| | - Xiangwei Wu
- National Health Commission of the People's Republic of China Key Laboratory of Prevention and Treatment of Central Asia High Incidence Diseases, First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832000, Xinjiang, China.
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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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Xia P, Wang XQ, Tian QS, Shang-Guan CL, Zhu HH. Case Report: Semi-Ex Vivo Hepatectomy Combined with Autologous Liver Transplantation for Alveolar Echinococcosis in Children. Am J Trop Med Hyg 2023; 109:640-644. [PMID: 37549899 PMCID: PMC10484275 DOI: 10.4269/ajtmh.23-0276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 07/06/2023] [Indexed: 08/09/2023] Open
Abstract
Hepatic alveolar echinococcosis (AE) is a zoonotic disease caused by the metacestode of Echinococcus multilocularis. Although surgical resection is the optimal treatment for hepatic AE, some patients with hepatic AE located in special introhepatic sites cannot be radically cured by conventional surgery. Here, we report that a 10-year-old female patient was admitted to the hospital with occupying liver lesions for 6 months. Computed tomography examination showed irregular mixed-density masses in the right lobe and caudate lobe of the liver, with partial invasion of the right hepatic artery, right hepatic vein, and right branch of the portal vein. The patient was preoperatively diagnosed with hepatic AE, which cannot be cured by conventional liver lobectomy. The patient underwent semi-ex vivo liver resection with autologous liver transplantation (second hepatic portal reconstruction, posterior hepatic inferior vena cava repair, and hepatic artery repair) and biliary-intestinal anastomosis. After hospital discharge, she has kept living a healthy life without disease recurrence for 13 months until the end of the last follow-up. This case shows that semi-ex vivo hepatectomy with autologous liver transplantation might be a feasible and safe choice for certain patients with AE located in special introhepatic sites, which has provided novel experiences for the surgical treatment of hepatic AE.
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Affiliation(s)
- Pan Xia
- Department of Graduate School, Qinghai University, Xining, China
| | - Xiang-Qian Wang
- Department of General Surgery, Qinghai Provincial People’s Hospital, Xining, China
| | - Qing-Shan Tian
- Department of General Surgery, Qinghai Provincial People’s Hospital, Xining, China
| | | | - Hai-Hong Zhu
- Department of General Surgery, Qinghai Provincial People’s Hospital, Xining, China
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Wu Y, Li L, Xu F, Yan H, Ohiolei JA, Shumuye NA, Nian X, Li W, Zhang N, Fu B, Jia W. Establishment of a secondary infection laboratory model of Echinococcus shiquicus metacestode using BALB/c mice and Mongolian jirds ( Meriones unguiculatus). Parasitology 2023; 150:813-820. [PMID: 37475454 PMCID: PMC10478056 DOI: 10.1017/s0031182023000604] [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: 02/02/2023] [Revised: 05/11/2023] [Accepted: 06/06/2023] [Indexed: 07/22/2023]
Abstract
Echinococcus shiquicus is peculiar to the Qinghai–Tibet plateau of China. Research on this parasite has mainly focused on epidemiological surveys and life cycle studies. So far, limited laboratory studies have been reported. Here, experimental infection of E. shiquicus metacestode in BALB/c mice and Mongolian jirds (Meriones unguiculatus) was carried out to establish alternative laboratory animal models. Intraperitoneal inoculation of metacestode material containing protoscoleces (PSCs) obtained from infected plateau pikas were conducted on BALB/c mice. Furthermore, metacestode material without PSCs deriving from infected BALB/c mice was intraperitoneally inoculated to Mongolian jirds. Experimental animals were dissected for macroscopic and histopathological examination. The growth of cysts in BALB/c mice was infiltrative, and they invaded the murine entire body. Most of the metacestode cysts were multicystic, but a few were unilocular. The cysts contained sterile vesicles, which had no PSCs. The metacestode materials were able to successfully infect new mice. In the jirds model, E. shiquicus cysts were typically formed freely in the peritoneal cavity; the majority of these cysts were free while a small portion adhered loosely to nearby organs. The proportion of fertile cysts was high, and contained many PSCs. The PSCs produced in Mongolian jirds also successfully infected new ones, which confirms that jirds can serve as an alternative experimental intermediate host. In conclusion, a laboratory animal infection was successfully established for E. shiquicus using BALB/c mice and Mongolian jirds. These results provide new models for the in-depth study of Echinococcus metacestode survival strategy, host interactions and immune escape mechanism.
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Affiliation(s)
- Yantao Wu
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
| | - Li Li
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
| | - Fuling Xu
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
| | - Hongbin Yan
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
| | - John Asekhaen Ohiolei
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
| | - Nigus Abebe Shumuye
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
| | - Xiaofeng Nian
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
| | - Wenhui Li
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
| | - Nianzhang Zhang
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
| | - Baoquan Fu
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Disease, Yangzhou 225009, Jiangsu Province, People's Republic of China
| | - Wanzhong Jia
- State Key Laboratory of Animal Disease Control and Prevention/College of Veterinary Medicine, Lanzhou University/National Para-reference Laboratory for Animal Echinococcosis/Key Laboratory of Veterinary Parasitology of Gansu Province/Key Laboratory of Zoonoses of Agriculture Ministry/Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, Gansu Province, People's Republic of China
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Disease, Yangzhou 225009, Jiangsu Province, People's Republic of China
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Qin M, Wang L, Wang Y, Wang X, Lei J, Cheng X, Feng Y, Hou Y, Wang Q, Xue C, Gavotte L, Frutos R. Investigation on the Management for Patients with Echinococcosis Treated with Albendazole - Three PLADs, China, 2019. China CDC Wkly 2023; 5:437-441. [PMID: 37274767 PMCID: PMC10236642 DOI: 10.46234/ccdcw2023.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 04/18/2023] [Indexed: 06/06/2023] Open
Abstract
What is already known about this topic? In China, patients with echinococcosis receive complimentary healthcare services, such as medical treatment, diagnostic examinations, and follow-up care. Despite this, no studies have been conducted to assess the quality of patient management to date. What is added by this report? This study reviewed the medical records of 899 patients who underwent albendazole treatment across 10 endemic counties. Out of 634 evaluable patient files, the proportion of patients with a ratio of actual follow-up and reexamination times to theoretical follow-up and reexamination times ≥0.8 were both low (21.92% and 23.19%, respectively). What are the implications for public health practices? This study identified weaknesses and specific issues in patient management and proposed feasible recommendations to enhance patient file documentation, follow-up, and reexamination.
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Affiliation(s)
- Min Qin
- 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
| | - Liying Wang
- 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
- Espace-Dev, UMR 228, Université de Montpellier, Montpellier, France
- Cirad, UMR 17, Intertryp, Campus international de Baillarguet, Montpellier, France
| | - Ying Wang
- 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
| | - Xu Wang
- 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
| | - Jiaxi Lei
- 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
| | - Xixi Cheng
- 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
| | - Yu Feng
- Gansu Provincial Center for Disease Control and Prevention, Lanzhou City, Gansu Province, China
| | - Yanyan Hou
- Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention, Urumqi City, Xinjiang Uygur Autonomous Region, China
| | - Qian Wang
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu City, Sichuan Province, China
| | - Chuizhao Xue
- 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
| | - Laurent Gavotte
- Espace-Dev, UMR 228, Université de Montpellier, Montpellier, France
| | - Roger Frutos
- Cirad, UMR 17, Intertryp, Campus international de Baillarguet, Montpellier, France
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Jiang T, Aji T, Ran B, Guo Q, Zhang R, Ahan A, Abulizi A, Tuergan T, Shao Y, Wen H. Collateral circulation caused by end-stage hepatic alveolar echinococcosis. BMC Infect Dis 2023; 23:322. [PMID: 37189056 DOI: 10.1186/s12879-022-07970-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/23/2022] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND Hepatic alveolar echinococcosis (HAE), as a benign parasitic disease with malignant infiltrative activity, grows slowly in the liver, allowing sufficient time for collateral vessels to emerge in the process of vascular occlusion. METHODS The portal vein (PV), hepatic vein and hepatic artery were observed by enhanced CT and the inferior vena cava (IVC) by angiography, respectively. Analysis of the anatomical characteristics of the collateral vessels helped to look into the pattern and characteristics of vascular collateralization caused by this specific etiology. RESULTS 33, 5, 12 and 1 patients were included in the formation of collateral vessels in PV, hepatic vein, IVC and hepatic artery, respectively. PV collateral vessels were divided into two categories according to different pathways: type I: portal -portal venous pathway (13 cases) and type II: type I incorporates a portal-systemic circulation pathway (20 cases). Hepatic vein (HV) collateral vessels fell into short hepatic veins. The patients with IVC collateral presented with both vertebral and lumbar venous varices. Hepatic artery collateral vessels emanating from the celiac trunk maintains blood supply to the healthy side of the liver. CONCLUSIONS Due to its special biological nature, HAE exhibited unique collateral vessels that were rarely seen in other diseases. An in-depth study would be of great help to improve our understanding related to the process of collateral vessel formation due to intrahepatic lesions and its comorbidity, in addition to providing new ideas for the surgical treatment of end-stage HAE.
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Affiliation(s)
- Tiemin Jiang
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China
- Department of Hepatobiliary and Hydatid Diseases, Digestive and Vascular Surgery Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, China
- The First Clinical Medical College of Xinjiang Medical University, Urumqi, 830054, China
| | - Tuerganaili Aji
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China
- Department of Hepatobiliary and Hydatid Diseases, Digestive and Vascular Surgery Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, China
| | - Bo Ran
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China
- Xinjiang Clinical Research Center for Echinococcosis and Hepatobiliary Diseases, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Qiang Guo
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China
- Department of Hepatobiliary and Hydatid Diseases, Digestive and Vascular Surgery Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, China
| | - Ruiqing Zhang
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China
- Xinjiang Clinical Research Center for Echinococcosis and Hepatobiliary Diseases, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ayifuhan Ahan
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China
- Department of Hepatobiliary and Hydatid Diseases, Digestive and Vascular Surgery Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, China
| | - Abuduaini Abulizi
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China
- Department of Hepatobiliary and Hydatid Diseases, Digestive and Vascular Surgery Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, China
| | - Talaiti Tuergan
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China
- Department of Hepatobiliary and Hydatid Diseases, Digestive and Vascular Surgery Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, China
| | - Yingmei Shao
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China.
- Xinjiang Clinical Research Center for Echinococcosis and Hepatobiliary Diseases, First Affiliated Hospital of Xinjiang Medical University, Urumqi, China.
| | - Hao Wen
- State Key Laboratory of Pathogenesis, Prevention and Management of High Incidence Diseases in Central Asia, The First Clinical Medical College of Xinjiang Medical University, Urumqi, China.
- Department of Hepatobiliary and Hydatid Diseases, Digestive and Vascular Surgery Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054, China.
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10
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Wei Y, Li W, Shao C, Zhao H, Hu Y, Liu H, Cao J. The polymorphic analysis of cox1 and cob genes of Echinococcus granulosus in the Ngari region of Tibet in China. Acta Trop 2023; 239:106803. [PMID: 36566892 DOI: 10.1016/j.actatropica.2022.106803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/27/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
Cystic echinococcosis (CE) is an important zoonotic parasitic disease caused by Echinococcus granulosus (E. granulosus). CE seriously threatens human health and the development of animal husbandry. The Ngari region is one of the world's highest endemic regions for CE, while genetic polymorphisms of E. granulosus were unclear. Paraffin slices of liver Cyst were collected from seventy-nine surgical patients with echinococcosis in the Ngari region. DNA was extracted from samples. The cox1 and cob genes of mitochondrial DNA of E. granulosus were simultaneously amplified and sequenced. The sequencing results were compared with the standard sequence (KU925397.1and HF947574.1). Phylogenetic trees and the haplotype network of cob and cox1 genes were constructed and analyzed genotypes of E. granulosus isolated from humans in the Ngari Region of Tibet. Out of 79 hydatid cyst samples collected from surgery patients, 60 isolates were identified as G1/ G3, and two isolates were identified as G6/ G7. Analysis of the cob/ cox1 genes revealed 9/7 mutations resulting in 8/6 haplotypes, respectively. The cob and cox1 neutrality indices computed by Tajima's D and Fu's Fs tests showed high negative values in Echinococcus granulosus sensu stricto (E. granulosus s. s.). The result suggested that E. granulosus in the Ngari region experienced population expansion or a negative selection. We found that G1/ G3 was still the main genotype, and G6/ G7 was found occasionally in humans of the Ngari region. Therefore, we recommend future surveys and control efforts to investigate G1/ G3 and G6/ G7 transmission in the Ngari region.
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Affiliation(s)
- Yuhuan Wei
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, Key Laboratory of Parasite and Vector Biology, National Health Commission of People's Republic of China, World Health Organization Collaborating Center for Tropical Diseases, Shanghai 200025, China; Department of Nutrition, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China
| | - Wujun Li
- First Affiliated Hospital of Xi'an Medical University, Xian 710077, China
| | - Chunhai Shao
- Department of Nutrition, Shanghai Fifth People's Hospital, Fudan University, Shanghai 200240, China
| | - Hai Zhao
- Clinical Laboratory Department of Shaanxi Provincial People's Hospital, Xian 710068, China
| | - Yuan Hu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, Key Laboratory of Parasite and Vector Biology, National Health Commission of People's Republic of China, World Health Organization Collaborating Center for Tropical Diseases, Shanghai 200025, China.
| | - Hua Liu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, Key Laboratory of Parasite and Vector Biology, National Health Commission of People's Republic of China, World Health Organization Collaborating Center for Tropical Diseases, Shanghai 200025, China.
| | - Jianping Cao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, Key Laboratory of Parasite and Vector Biology, National Health Commission of People's Republic of China, World Health Organization Collaborating Center for Tropical Diseases, Shanghai 200025, China
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11
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Yin J, Wu X, Han J, Torgerson PR. The impact of natural environment on human alveolar echinococcosis: A township-level modeling study in Qinghai-Tibet Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 856:159085. [PMID: 36179829 DOI: 10.1016/j.scitotenv.2022.159085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 09/23/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Human alveolar echinococcosis (AE) is a lethal helminthic infection caused by the tapeworms Echinococcus multilocularis. The Qinghai-Tibet Plateau has the greatest endemicity of human AE globally, but the natural risk factors and its impact mechanism are still unclear. Generalized linear models and generalized additive models are used to select key linear and non-linear environmental factors associated with cases of AE. The interactive effect between different factors is identified using concurvity test. From fifty-nine variables analyzed, four key factors and one interaction term were identified associated with AE. Considering interaction terms between climatic and geographical landscape factors can significantly improve model fitting. Minimum winter precipitation, percentage of grassland cover, and minimum elevation have significant positive linear relationship with human AE incidence. The relationship between maximum summer precipitation and human AE is non-linear with high AE incidence associated with moderate precipitation. The interaction term of maximum summer precipitation and number of patches of grassland on human AE indicates that human AE incidence is highest when both factors were high. The climatic and landscape risk factors together are associated with the local transmission of human AE in Qinghai-Tibet Plateau. This study provides a scientific basis for human intervention in AE from fine-scale ecological environment.
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Affiliation(s)
- Jie Yin
- State Key Laboratory of Remote Sensing Science, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China; Section of Epidemiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Xiaoxu Wu
- State Key Laboratory of Remote Sensing Science, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China.
| | - Jiatong Han
- State Key Laboratory of Remote Sensing Science, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China
| | - Paul Robert Torgerson
- Section of Epidemiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
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12
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Investigation of Parasitic Nematodes Detected in the Feces of Wild Carnivores in the Eastern Qinghai-Tibet Plateau, China. Pathogens 2022; 11:pathogens11121520. [PMID: 36558854 PMCID: PMC9785254 DOI: 10.3390/pathogens11121520] [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: 11/11/2022] [Revised: 12/07/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Wildlife shares grazing areas with herders in the eastern Qinghai-Tibet Plateau, and humans can be infected by zoonotic nematodes through direct contact with animals or contaminated water. In this study, fecal samples (n = 296) from wild carnivores were collected to explore the infection rate and molecular genetic characteristics of nematodes by stratified random sampling in the survey areas. Host species and the nematodes they carried were then identified using 16S rRNA and 18S rRNA gene sequencing, respectively. Statistical analysis, neutrality tests, genetic diversity analysis and Bayesian inferred trees were performed to complete the study. In total, 10 species of nematodes were detected in 240 feces from six species of carnivores identified (including dominant Vulpes ferrilata and Vulpes vulpes), namely Uncinaria stenocephala, Toxascaris sp., Crenosoma vulpis, Parapharyngodon bainae, Oesophagostomum muntiacum, Aspiculuris tetraptera, Mastophorus muris, Nematodirus spathiger, Muellerius capillaris, and Molineus patens. Among these nematodes, U. stenocephala (35.83%, 86/240) and Toxascaris sp. (14.58%, 35/240) were detected at higher rates than the other nematodes (χ2 = 516.909, p < 0.05). Of 17 and 18 haplotypes were found based on the ITS1 gene for U. stenocephala and nad1 gene for Toxascaris sp., respectively. For the first time, using molecular methods, we report the infection of V. ferrilata by U. stenocephala, a potential zoonotic parasite, and suggest Toxascaris sp. may be a newly discovered nematode that lives within the fox intestine.
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13
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Zhang X, Fu Y, Ma Y, Guo Z, Shen X, Li Z, Jiunai G, Wang X, Maji W, Duo H. Brief report prevalence of Echinococcus species in wild foxes in parts of Qinghai Province, China. Vet Res Commun 2022; 47:947-952. [DOI: 10.1007/s11259-022-10012-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022]
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Wang LY, Qin M, Gavotte L, Wu WP, Cheng X, Lei JX, Yan J, Frutos R. Societal drivers of human echinococcosis in China. Parasit Vectors 2022; 15:385. [PMID: 36271415 PMCID: PMC9587573 DOI: 10.1186/s13071-022-05480-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 09/01/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Echinococcosis is a parasitic zoonotic disease that threatens human health and economic development. In China, 370 counties are endemic for echinococcosis. Qinghai-Tibet Plateau has the most patients and people at risk. Therefore, analyzing the societal factors related to susceptibility to the disease is critical for efficient prevention and control of echinococcosis. METHODS The demographic characteristics and lifestyle of echinococcosis cases were clustered using K-means cluster analysis to determine the main factors of risk of echinococcosis. RESULTS Middle-aged and young people as well as those with a low education level and herdsmen are at risk of contracting echinococcosis. Nomadism, domestic and feral dogs in the surrounding environment, and drinking heavily polluted natural surface water are the main behavioral risk factors. The cystic echinococcosis (CE) and alveolar echinococcosis (AE) cluster analysis focused on female, middle-aged, and young people, winter settlement and summer nomadism, and domestic and feral dogs in the surrounding environment. There were significant differences in lifestyle between Qinghai-Tibet Plateau cases and non-Qinghai-Tibet-Plateau cases. CONCLUSION According to the distribution of cases and CE and AE, this study identified the factors of risk of echinococcosis in the Qinghai-Tibet Plateau and non-Qinghai-Tibet Plateau. Adapted control techniques appropriate for the various epidemic areas should be established to serve as a reference for echinococcosis prevention.
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Affiliation(s)
- Li-Ying Wang
- Chinese Centre for Disease Control and Prevention (Chinese Centre for Tropical Diseases Research), Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic DiseasesWHO Collaborating Centre for Tropical DiseasesNational Centre for International Research On Tropical Diseases, Shanghai, People's Republic of China.,NHC Key Laboratory of Echinococcosis Prevention and Control, Tibet Center for Disease Control and Prevention, Lhasa, China.,Espace-Dev, UMR 228, Université de Montpellier, Montpellier, France.,Cirad, UMR 17, Intertryp, Campus international de Baillarguet, Montpellier, France
| | - Min Qin
- Chinese Centre for Disease Control and Prevention (Chinese Centre for Tropical Diseases Research), Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic DiseasesWHO Collaborating Centre for Tropical DiseasesNational Centre for International Research On Tropical Diseases, Shanghai, People's Republic of China
| | - Laurent Gavotte
- Espace-Dev, UMR 228, Université de Montpellier, Montpellier, France
| | - Wei-Ping Wu
- Chinese Centre for Disease Control and Prevention (Chinese Centre for Tropical Diseases Research), Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic DiseasesWHO Collaborating Centre for Tropical DiseasesNational Centre for International Research On Tropical Diseases, Shanghai, People's Republic of China
| | - Xixi Cheng
- Chinese Centre for Disease Control and Prevention (Chinese Centre for Tropical Diseases Research), Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic DiseasesWHO Collaborating Centre for Tropical DiseasesNational Centre for International Research On Tropical Diseases, Shanghai, People's Republic of China
| | - Jia-Xi Lei
- Chinese Centre for Disease Control and Prevention (Chinese Centre for Tropical Diseases Research), Key Laboratory of Parasite and Vector Biology, National Institute of Parasitic DiseasesWHO Collaborating Centre for Tropical DiseasesNational Centre for International Research On Tropical Diseases, Shanghai, People's Republic of China
| | - Jun Yan
- Chinese Centre for Disease Control and Prevention, Beijing, China.
| | - Roger Frutos
- Cirad, UMR 17, Intertryp, Campus international de Baillarguet, Montpellier, France.
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15
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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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16
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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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17
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Liu L, Chen F, Jiang S, Zhong B, Li W, Xu K, Wang Q, Wang Y, Cao J. Analysis of gene expression profile of peripheral blood in alveolar and cystic echinococcosis. Front Cell Infect Microbiol 2022; 12:913393. [PMID: 36034715 PMCID: PMC9405190 DOI: 10.3389/fcimb.2022.913393] [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: 04/05/2022] [Accepted: 06/28/2022] [Indexed: 11/13/2022] Open
Abstract
RNA-sequencing (RNA-seq) is a versatile, high-throughput technology that is being widely employed for screening differentially expressed genes (DEGs) in various diseases. Echinococcosis, a globally distributed zoonosis, has been reported to impose a heavy disease burden in pastoral areas of China. Herein we aimed to explore the molecular mechanisms underlying echinococcosis. In this study, peripheral blood samples were collected from six patients with alveolar echinococcosis (AE), six patients with cystic echinococcosis (CE), and six healthy controls. RNA-Seq (mRNA) was performed to detect gene transcript and expression levels, and DEGs were subjected to bioinformatic analyses. In comparison with healthy controls, 492 DEGs (270 upregulated, 222 downregulated) were found in the AE group and 424 DEGs (170 upregulated, 254 downregulated) were found in the CE group (|log2 (fold change)| > 1 and P < 0.05). Further, 60 genes were upregulated and 39 were downregulated in both the AE and CE groups. Gene ontology enrichment analysis indicated that DEGs were mainly involved in molecular functions, including extracellular space, extracellular region, organ and system development, and anatomical structure development. Protein–protein interaction (PPI) networks were constructed to depict the complex relationship between DEGs and interacting proteins.
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Affiliation(s)
- Lei Liu
- Department of Hospital Infection Management, Sichuan Provincial Orthopedic Hospital, Chengdu, China
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; National Center for International Research on Tropical Diseases, China; World Health Organization Collaborating Center for Tropical Diseases, Shanghai, China
| | - Fan Chen
- Department of Microbiological Laboratory, Xindu County Center for Disease Control and Prevention, Chengdu, China
| | - Shan Jiang
- Department of Department of Environmental and School Health, Chengdu Center for Disease Control and Prevention, Chengdu, China
| | - Bo Zhong
- Institute of Parasitic Diseases, Sichuan Center for Disease Control and Prevention, Chengdu, China
| | - Wei Li
- Department of Parasitic Diseases, Garzê Center for Disease Control and Prevention, Kangding, China
| | - Kejun Xu
- Department of Parasitic Diseases, Garzê Center for Disease Control and Prevention, Kangding, China
| | - Qi Wang
- Institute of Parasitic Diseases, Sichuan Center for Disease Control and Prevention, Chengdu, China
| | - Ying Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; National Center for International Research on Tropical Diseases, China; World Health Organization Collaborating Center for Tropical Diseases, Shanghai, China
- *Correspondence: Ying Wang, ; Jianping Cao,
| | - Jianping Cao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, (Chinese Center for Tropical Diseases Research); Key Laboratory of Parasite and Vector Biology, National Health Commission of People’s Republic of China; National Center for International Research on Tropical Diseases, China; World Health Organization Collaborating Center for Tropical Diseases, Shanghai, China
- The School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Ying Wang, ; Jianping Cao,
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Zhang T, Zhang Y, Yang Z, Jiang Y, Sun L, Huang D, Tian M, Shen Y, Deng J, Hou J, Ma Y. Echinococcus multilocularis protoscoleces enhance glycolysis to promote M2 Macrophages through PI3K/Akt/mTOR Signaling Pathway. Pathog Glob Health 2022; 117:409-416. [PMID: 35876088 PMCID: PMC10177676 DOI: 10.1080/20477724.2022.2104055] [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: 10/16/2022] Open
Abstract
Alveolar Echinococcosis (AE) is a zoonotic parasitic disease caused by Echinococcus multilocularis, but its pathogenesis remains unclear. The primary objective of this study is to explore whether Echinococcus multilocularis protoscoleces (PSCs) regulate macrophage polarization and glucose metabolism by PI3K/Akt/mTOR signaling pathway. We found that large numbers of CD68+ macrophages gathered in close liver issue from the lesion in AE patients. PSCs preferentially differentiated into M2 macrophages and the expressions of HK1, PFKL, PKM2, PI3K, Akt, p-Akt, mTOR and p-mTOR increased. The above results show that Echinococcus multilocularis protoscoleces enhance glycolysis to promote M2 macrophages through PI3K/Akt/mTOR signaling pathway.
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Affiliation(s)
- Tao Zhang
- Research Center for High Altitude Medicine, Qinghai University, Xining, Qinghai province, China.,Key Laboratory of Application of High Altitude Medicine in Qinghai, Qinghai University, Xining, Qinghai province, China.,Department of Rehabilitation Medicine, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Yaogang Zhang
- Central Laboratory of Qinghai University Affiliated Hospital, Qinghai University Affiliated Hospital, Xining, Qinghai province, China.,Qinghai Province Research Key Laboratory of Echinococcosis, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Zihan Yang
- Research Center for High Altitude Medicine, Qinghai University, Xining, Qinghai province, China.,Key Laboratory of Application of High Altitude Medicine in Qinghai, Qinghai University, Xining, Qinghai province, China.,Department of Neurology, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Yuan Jiang
- Central Laboratory of Qinghai University Affiliated Hospital, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Li Sun
- Central Laboratory of Qinghai University Affiliated Hospital, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Dengliang Huang
- Central Laboratory of Qinghai University Affiliated Hospital, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Meiyuan Tian
- Central Laboratory of Qinghai University Affiliated Hospital, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Yinhong Shen
- Department of Pediatrics, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Jun Deng
- Department of Pediatrics, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Jing Hou
- Central Laboratory of Qinghai University Affiliated Hospital, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
| | - Yanyan Ma
- Central Laboratory of Qinghai University Affiliated Hospital, Qinghai University Affiliated Hospital, Xining, Qinghai province, China.,Qinghai Province Research Key Laboratory of Echinococcosis, Qinghai University Affiliated Hospital, Xining, Qinghai province, China.,Department of Pediatrics, Qinghai University Affiliated Hospital, Xining, Qinghai province, China
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19
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Uakhit R, Smagulova A, Syzdykova A, Abdrakhmanov S, Kiyan V. Genetic diversity of Echinococcus spp. in wild carnivorous animals in Kazakhstan. Vet World 2022; 15:1489-1496. [PMID: 35993082 PMCID: PMC9375211 DOI: 10.14202/vetworld.2022.1489-1496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/02/2022] [Indexed: 11/24/2022] Open
Abstract
Background and Aim: The study of Echinococcus infection among farm animals in Kazakhstan was carried out to monitor the invasion among livestock and map the data obtained. Unfortunately, there are only partial data on the study of echinococcosis among wild carnivores in Kazakhstan, which makes it difficult to conduct a comparative analysis of the epidemiological situation among wild animals. The present study aimed to estimate the genetic diversity of Echinococcus spp. (Leuckart, 1863) in Kazakhstan based on sequence analysis of cytochrome c oxidase subunit 1 (cox1) and dehydrogenase subunit 1 (nad1) of worms isolated from wild carnivorous animals wolf (Canis lupus), red fox (Vulpes vulpes) and corsac (Vulpes corsac). Materials and Methods: DNA from parasite tissue was used as a template for the amplification of the two mitochondrial genes cox1 and nad1. Sequencing was performed according to the manual for the Seq Studio Genetic Analyzer. The multiple alignments of obtained sequences were performed using the ClustalW algorithm in Mega (v.11) software. Alignments were exported as a Nexus extension and used as input for TCS v1.21 for the identification of haplotypes. The phylogenetic analysis was constructed according to the neighbor-joining method using Mega (v.11) software. Results: Analysis of the extensiveness of echinococcosis invasion showed that 6.3% were wolves, 18.2% were corsacs, and 85% were foxes. In total, 159 adults of Echinococcus spp. from the three species of animals in different parts of Kazakhstan were analyzed, and 17 individual biological samples were successfully sequenced. Sequence analysis of cox1 and nad1 genes revealed two types of echinococcosis – Echinococcus granulosus in red foxes and wolves, and Echinococcus multilocularis in corsacs. Sequencing of a portion of the mitochondrial genome made it possible to determine seven haplotypes of the pathogen in the studied samples of E. granulosus. Molecular analysis of cox1 and nad1 genes of E. multilocularis revealed three new haplotypes, which have significant variability compared with other studied Asian haplotypes. Conclusion: This study made it possible to fill the gaps in understanding the localization of the foci of the spread of the echinococcosis pathogen among the main wild carnivores and to determine the species reservoir of the pathogen in the greater territory of Kazakhstan.
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Affiliation(s)
- Rabiga Uakhit
- Saken Seifullin Kazakh Agrotechnical University, 62 Zhenis Avenue, Nur-Sultan 010011, Kazakhstan
| | - Ainura Smagulova
- Saken Seifullin Kazakh Agrotechnical University, 62 Zhenis Avenue, Nur-Sultan 010011, Kazakhstan
| | - Alfiya Syzdykova
- Saken Seifullin Kazakh Agrotechnical University, 62 Zhenis Avenue, Nur-Sultan 010011, Kazakhstan
| | - Sarsenbay Abdrakhmanov
- Saken Seifullin Kazakh Agrotechnical University, 62 Zhenis Avenue, Nur-Sultan 010011, Kazakhstan
| | - Vladimir Kiyan
- Saken Seifullin Kazakh Agrotechnical University, 62 Zhenis Avenue, Nur-Sultan 010011, Kazakhstan; National Center of Biotechnology, 13/5 Qorghalzhyn Hwy, Nur-Sultan 010011, Kazakhstan
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20
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Wang L, Gongsang Q, Pang H, Qin M, Wang Y, Li J, Frutos R, Gavotte L. Assessment of echinococcosis control in Tibet Autonomous Region, China. Infect Dis Poverty 2022; 11:59. [PMID: 35619124 PMCID: PMC9137097 DOI: 10.1186/s40249-022-00987-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 05/09/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND In China the highest prevalence of echinococcosis is in Tibet Autonomous Region (TAR). The government has issued documents and implemented comprehensive prevention and control measures focusing on controlling the source of infection of echinococcosis. It was very important to understand the implementation and effect of infectious source control measures. The purpose of this study was to examine the implementation of measures to control infectious source (domestic and stray dogs) in TAR and to assess their effectiveness. METHODS We collected data on domestic dog registration and deworming and stray dog sheltering in 74 counties/districts in the TAR from 2017 to 2019. Fecal samples from domestic dogs were collected from randomly selected towns to determine Echinococcus infection in dogs using coproantigen ELISA. We analyzed the data to compare the canine rate of infection between 2016 and 2019. The data analysis was performed by SPSS statistical to compare dog infection rate in 2016 and 2019 by chi-square test, and ArcGIS was used for mapping. RESULTS From 2017 to 2019, 84 stray dog shelters were built in TAR, and accumulatively 446,660 stray or infected dogs were arrested, sheltered, or disposed of. The number of domestic dogs went downward, with an increased registration management rate of 78.4% (2017), 88.8% (2018), and 99.0% (2019). Dogs were dewormed 5 times in 2017, 12 times in 2018, and 12 times in 2019. The dog infection rate was 1.7% (252/14,584) in 2019, significantly lower than 7.3% (552/7564) from the survey of echinococcosis prevalence in Tibet in 2016 (P < 0.05). CONCLUSION Between 2017 and 2019, the number of stray dogs and infection rate of Echinococcus spp. in domestic dogs decreased significantly, indicating that dogs were effectively controlled as a source of infection in TAR and reflecting a significant decrease in the risk of echinococcosis transmission.
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Affiliation(s)
- Liying Wang
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention (Chinese Centre for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, National Centre for International Research On Tropical Diseases, Shanghai, 200025, China. .,Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, 850000, China. .,Cirad, UMR 17, Intertryp, Campus international de Baillarguet, 34398, Montpellier, France. .,Espace-Dev, UMR D-228, Université de Montpellier, 34000, Montpellier, France.
| | - Quzhen Gongsang
- Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, 850000, China
| | - Huasheng Pang
- Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, 850000, China
| | - Min Qin
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention (Chinese Centre for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, National Centre for International Research On Tropical Diseases, Shanghai, 200025, China
| | - Ying Wang
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention (Chinese Centre for Tropical Diseases Research), NHC Key Laboratory of Parasite and Vector Biology, WHO Collaborating Centre for Tropical Diseases, National Centre for International Research On Tropical Diseases, Shanghai, 200025, China
| | - Jingzhong Li
- Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, 850000, China.
| | - Roger Frutos
- Cirad, UMR 17, Intertryp, Campus international de Baillarguet, 34398, Montpellier, France
| | - Laurent Gavotte
- Espace-Dev, UMR D-228, Université de Montpellier, 34000, Montpellier, France
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21
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Massolo A, Simoncini A, Romig T. The ‘bridge effect’ by intermediate hosts may explain differential distributions of Echinococcus species. Trends Parasitol 2022; 38:501-512. [DOI: 10.1016/j.pt.2022.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/24/2022] [Accepted: 04/07/2022] [Indexed: 10/18/2022]
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22
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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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23
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Zhang X, Jian Y, Guo Z, Duo H, Wei Y. DEVELOPMENT OF A TRIPLEX REAL-TIME PCR ASSAY TO DETECT ECHINOCOCCUS SPECIES IN CANID FECAL SAMPLES. J Parasitol 2022; 108:79-87. [PMID: 35171246 DOI: 10.1645/21-72] [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] [Indexed: 12/21/2022] Open
Abstract
Echinococcosis is a zoonotic disease with great significance to public health, and appropriate detection and control strategies should be adopted to mitigate its impact. Most cases of echinococcosis are believed to be transmitted by the consumption of food and/or water contaminated with canid stool containing Echinococcus spp. eggs. Studies assessing Echinococcus multilocularis, Echinococcus granulosus sensu stricto, and Echinococcus shiquicus coinfection from contaminated water-derived, soil-derived, and food-borne samples are scarce, which may be due to the lack of optimized laboratory detection methods. The present study aimed to develop and evaluate a novel triplex TaqMan-minor groove binder probe for real-time polymerase chain reaction (rtPCR) to simultaneously detect the 3 Echinococcus spp. mentioned above from canid fecal samples in the Qinghai-Tibetan Plateau area (QTPA). The efficiency and linearity of each signal channel in the triplex rtPCR assay were within acceptable limits for the range of concentrations tested. Furthermore, the method was shown to have good repeatability (standard deviation ≤0.32 cycle threshold), and the limit of detection was estimated to be 10 copies plasmid/μl reaction. In summary, the evaluation of the present method shows that the newly developed triplex rtPCR assay is a highly specific, precise, consistent, and stable method that could be used in epidemiological investigations of echinococcosis.
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Affiliation(s)
- Xueyong Zhang
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou Gansu, 730070, People's Republic of China.,Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining Qinghai, 810016, People's Republic of China
| | - Yingna Jian
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou Gansu, 730070, People's Republic of China.,Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining Qinghai, 810016, People's Republic of China
| | - Zhihong Guo
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining Qinghai, 810016, People's Republic of China
| | - Hong Duo
- Qinghai Academy of Animal Sciences and Veterinary Medicine, Qinghai University, Xining Qinghai, 810016, People's Republic of China
| | - Yanming Wei
- Institute of Traditional Chinese Veterinary Medicine, College of Veterinary Medicine, Gansu Agricultural University, Lanzhou Gansu, 730070, People's Republic of China
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24
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Wang X, Rainey JJ, Goryoka GW, Liang Z, Wu S, Wen L, Duan R, Qin S, Huang H, Kharod G, Rao CY, Salyer SJ, Behravesh CB, Jing H. Using a One Health approach to prioritize zoonotic diseases in China, 2019. PLoS One 2021; 16:e0259706. [PMID: 34797849 PMCID: PMC8604330 DOI: 10.1371/journal.pone.0259706] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 10/26/2021] [Indexed: 12/24/2022] Open
Abstract
Background China is vulnerable to zoonotic disease transmission due to a large agricultural work force, sizable domestic livestock population, and a highly biodiverse ecology. To better address this threat, representatives from the human, animal, and environmental health sectors in China held a One Health Zoonotic Disease Prioritization (OHZDP) workshop in May 2019 to develop a list of priority zoonotic diseases for multisectoral, One Health collaboration. Methods Representatives used the OHZDP Process, developed by the US Centers for Disease Control and Prevention (US CDC), to prioritize zoonotic diseases for China. Representatives defined the criteria used for prioritization and determined questions and weights for each individual criterion. A review of English and Chinese literature was conducted prior to the workshop to collect disease specific information on prevalence, morbidity, mortality, and Disability-Adjusted Life Years (DALYs) from China and the Western Pacific Region for zoonotic diseases considered for prioritization. Results Thirty zoonotic diseases were evaluated for prioritization. Criteria selected included: 1) disease hazard/severity (case fatality rate) in humans, 2) epidemic scale and intensity (in humans and animals) in China, 3) economic impact, 4) prevention and control, and 5) social impact. Disease specific information was obtained from 792 articles (637 in English and 155 in Chinese) and subject matter experts for the prioritization process. Following discussion of the OHZDP Tool output among disease experts, five priority zoonotic diseases were identified for China: avian influenza, echinococcosis, rabies, plague, and brucellosis. Conclusion Representatives agreed on a list of five priority zoonotic diseases that can serve as a foundation to strengthen One Health collaboration for disease prevention and control in China; this list was developed prior to the emergence of SARS-CoV-2 and the COVID-19 pandemic. Next steps focused on establishing a multisectoral, One Health coordination mechanism, improving multisectoral linkages in laboratory testing and surveillance platforms, creating multisectoral preparedness and response plans, and increasing workforce capacity.
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Affiliation(s)
- Xin Wang
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Jeanette J. Rainey
- Division of Global Health Protection, United States Centers for Disease Control and Prevention, Beijing, China
| | - Grace W. Goryoka
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, United States of America
| | - Zuoru Liang
- Center for Global Public Health, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Shuyu Wu
- Division of Global Health Protection, United States Centers for Disease Control and Prevention, Beijing, China
| | - Liming Wen
- Yinchuan Animal Center for Disease Control and Prevention, Yinchuan, Ningxia, China
| | - Ran Duan
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Shuai Qin
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Haodi Huang
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, China
| | - Grishma Kharod
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, United States of America
| | - Carol Y. Rao
- Division of Global Health Protection, Centers for Disease Control and Prevention, Atlanta, GA, United States of America
| | - Stephanie J. Salyer
- Division of Global Health Protection, Centers for Disease Control and Prevention, Atlanta, GA, United States of America
| | - Casey Barton Behravesh
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, GA, United States of America
| | - Huaiqi Jing
- National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- * E-mail:
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Yu XK, Zhang L, Ma WJ, Bi WZ, Ju SG. An Overview of Hepatic Echinococcosis and the Characteristic CT and MRI Imaging Manifestations. Infect Drug Resist 2021; 14:4447-4455. [PMID: 34737585 PMCID: PMC8558428 DOI: 10.2147/idr.s331957] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/30/2021] [Indexed: 11/25/2022] Open
Abstract
Hepatic echinococcosis is a parasitic, infectious disease with a high incidence in pastoral areas. It is highly infectious with a poor prognosis in some cases, which seriously affects the quality of life for people living in pastoral areas. This study aims to discuss the radiological characteristics, including computed tomography (CT) and magnetic resonance imaging (MRI), of hepatic echinococcosis from its definition, transmission, and pathological physiology. The characteristics of CT and MRI manifestations of cystic echinococcosis and alveolar echinococcosis are summarized in this study. It might help doctors to investigate this disease further and accurately make a diagnosis.
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Affiliation(s)
- Xiao-Kun Yu
- Department of Radiology, The Fifth Centre Hospital of Tianjin, Tianjin, 300450, People's Republic of China
| | - Le Zhang
- Department of Radiology, The Fifth Centre Hospital of Tianjin, Tianjin, 300450, People's Republic of China
| | - Wen-Jun Ma
- Department of Radiology, Huangnan Tibetan Autonomous Prefecture People's Hospital, Huangnan, Qinghai Province, 811300, People's Republic of China
| | - Wen-Zhong Bi
- Department of Radiology, Qinghai Tibetan Hospital, Xining, Qinghai Province, 810000, People's Republic of China
| | - Sheng-Gang Ju
- Department of Radiology, Henan Mongol Autonomous County People's Hospital, Xining, Qinghai Province, 811500, People's Republic of China
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Li T, Shuai P, Wang J, Wang L. Prevalence, awareness, treatment and control of hypertension among Ngawa Tibetans in China: a cross-sectional study. BMJ Open 2021; 11:e052207. [PMID: 34489294 PMCID: PMC8422477 DOI: 10.1136/bmjopen-2021-052207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVES To explore the prevalence, awareness, treatment and control rate of hypertension and analyse the potential social environment factors among Ngawa Tibetans in China. DESIGN This was a cross-sectional observational study. SETTING The investigation based on a multistage stratified cluster sampling was conducted in the Ngawa area, Sichuan Province, Southwest China. Tibetan residents were selected by random sampling method from one city and six counties in Ngawa. METHODS Basic demographical information, physical activity and blood pressure were collected. In addition, the participants completed the questionnaire. A multivariate logistic regression analysis was used to examine the association between the prevalence, awareness, treatment and control rate of hypertension and the potential risk factors. PARTICIPANTS The sample comprised 2228 Ngawa Tibetan residents (age 18-80 years) from September 2018 to June 2019. RESULTS The prevalence rate of hypertension was 24.6%. The control rate was 6.2%, while the awareness rate (32.3%) and treatment rate (21.7%) of hypertension had been significantly improved. CONCLUSION The prevalence of hypertension among Ngawa Tibetans was high. The awareness and treatment were improved in recent years. But the control rate was low. The government needs to strengthen the basic medical care and health education for Ngawa Tibetans.
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Affiliation(s)
- Tingxin Li
- Health Management Center, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Ping Shuai
- Health Management Center, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
| | - Jinghong Wang
- College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, China
| | - Lin Wang
- Health Management Center, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
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Fu MH, Wang X, Han S, Guan YY, Bergquist R, Wu WP. Advances in research on echinococcoses epidemiology in China. Acta Trop 2021; 219:105921. [PMID: 33878307 DOI: 10.1016/j.actatropica.2021.105921] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 04/10/2021] [Accepted: 04/12/2021] [Indexed: 12/11/2022]
Abstract
Echinococcoses are serious zoonotic diseases in China's vast, western and north-western pastoral areas that has one of the highest prevalence in the world. The two most common forms, cystic echinococcosis (CE) and alveolar echinococcosis (AE), are co-epidemic in some areas causing a grave threat to people's health and economic development. Echinococcus spp. are transmitted through domestic, sylvatic and mixed cycles involving many kinds of host. Successful transmission requires a favourable environment for the growth of the parasites and survival of their eggs, while the unique customs and religious beliefs in the endemic areas pose a challenge to the prevention and control of these parasites. Based on previous epidemiological studies, this paper reviews the particular factors affecting the transmission of Echinococcus parasites in China, with a focus on biological (parasite genotype and the species, age, sex and density of hosts), environmental (landscape and climate) and social (age, gender, ethnicity, education, occupation, life style, cultural customs, living conditions and hygiene practices of humans in the endemic areas). These three factors interact with each other and jointly determine the parasites' transmission intensity, the study of which supports the formulation of the strategies and measures that are significant for control of these infections.
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Yang SJ, Xiao N, Li JZ, Feng Y, Ma JY, Quzhen GS, Yu Q, Zhang T, Yi SC, Luo ZH, Pang HS, Li C, Shen ZL, Hou KS, Zhang BB, Zhou YB, Jiang HL, Zhou XN. Smart deworming collar: A novel tool for reducing Echinococcus infection in dogs. PLoS Negl Trop Dis 2021; 15:e0009443. [PMID: 34237061 PMCID: PMC8266112 DOI: 10.1371/journal.pntd.0009443] [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: 11/21/2020] [Accepted: 05/04/2021] [Indexed: 11/18/2022] Open
Abstract
Echinococcosis is a serious zoonotic parasitic disease transmitted from canines to humans and livestock. Periodic deworming is recommended by the WHO/OIE as a highly effective measure against echinococcosis. However, manual deworming involves significant challenges, particularly in remote areas with scarce resources. The insufficient awareness delivering praziquantel (PZQ) baits for dogs leads to low compliance rate. The aim of this study was therefore to develop a novel smart collar for dogs to address these challenges. We developed a smart Internet of Things (IoT)-based deworming collar which can deliver PZQ baits for dogs automatically, regularly, quantitatively with predominant characteristics of being waterproof, anti-collision, cold-proof and long life battery. Its performance was tested in two remote locations on the Tibetan Plateau. A cross-sectional survey was conducted to evaluate the compliance of the dog owners. Further, a randomized controlled study was performed to evaluate the difference between smart-collar deworming and manual deworming. The collar's effectiveness was further assessed on the basis of Generalized Estimation Equations (GEE). The testing and evaluation was done for 10 smart deworming collars in factory laboratory, 18 collars attached for 18 dogs in Seni district, Tibet Autonomous Region, China, and 523 collars attached for 523 dogs in Hezuo city, Gansu province, China. The anti-collision, waterproof, and coldproof proportion of the smart collars were 100.0%, 99.5%, and 100.0%, respectively. When compared to manual deworming, the dogs' risk of infection with Echinococcus on smart-collar deworming is down to 0.182 times (95% CI: 0.049, 0.684) in Seni district and 0.355 (95%CI: 0.178, 0.706) in Hezuo city, the smart collar has a significant protective effect. The owners' overall compliance rate to attach the smart collars for their dogs was 89%. The smart deworming collar could effectively reduce the dogs' risk of infection with Echinococcus in dogs, significantly increase the deworming frequency and coverage and rapidly remove worm biomass in dogs. Thus, it may be a promising alternative to manual deworming, particularly in remote areas on the Tibetan Plateau.
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Affiliation(s)
- Shi-Jie Yang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Key Laboratory of Parasite and Vector Biology, Ministry of Health; National Center for International Research on Tropical Diseases; WHO Collaborating Centre for Tropical Diseases, Shanghai, China
| | - Ning Xiao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Key Laboratory of Parasite and Vector Biology, Ministry of Health; National Center for International Research on Tropical Diseases; WHO Collaborating Centre for Tropical Diseases, Shanghai, China
- One Health Center, School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing-Zhong Li
- Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, China
| | - Yu Feng
- Department of Parasitic Diseases, Gansu Center for Disease Control and Prevention, Lanzhou, China
| | - Jun-Ying Ma
- Qinghai Institute for Endemic Disease Prevention and Control, Xining, China
| | - Gong-Sang Quzhen
- Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, China
| | - Qing Yu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Key Laboratory of Parasite and Vector Biology, Ministry of Health; National Center for International Research on Tropical Diseases; WHO Collaborating Centre for Tropical Diseases, Shanghai, China
| | - Ting Zhang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Key Laboratory of Parasite and Vector Biology, Ministry of Health; National Center for International Research on Tropical Diseases; WHO Collaborating Centre for Tropical Diseases, Shanghai, China
| | - Shi-Cheng Yi
- Shanghai Yier Information Technology Co., Ltd, Shanghai, China
| | - Zhao-Hui Luo
- Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, China
| | - Hua-Sheng Pang
- Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, China
| | - Chuang Li
- Shanghai Yier Information Technology Co., Ltd, Shanghai, China
| | - Zhuo-Li Shen
- Hezuo Center for Disease Control and Prevention, Hezuo city, Gansu province, China
| | - Ke-Sheng Hou
- Hezuo Center for Disease Control and Prevention, Hezuo city, Gansu province, China
| | - Bin-Bin Zhang
- Hezuo Center for Disease Control and Prevention, Hezuo city, Gansu province, China
| | - Yi-Biao Zhou
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China
| | - Hong-Lin Jiang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China
| | - Xiao-Nong Zhou
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Key Laboratory of Parasite and Vector Biology, Ministry of Health; National Center for International Research on Tropical Diseases; WHO Collaborating Centre for Tropical Diseases, Shanghai, China
- One Health Center, School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Ma T, Jiang D, Hao M, Fan P, Zhang S, Quzhen G, Xue C, Han S, Wu W, Zheng C, Ding F. Geographical Detector-based influence factors analysis for Echinococcosis prevalence in Tibet, China. PLoS Negl Trop Dis 2021; 15:e0009547. [PMID: 34252103 PMCID: PMC8297938 DOI: 10.1371/journal.pntd.0009547] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 07/22/2021] [Accepted: 06/08/2021] [Indexed: 11/19/2022] Open
Abstract
Echinococcosis, caused by genus Echinococcus, is the most pathogenic zoonotic parasitic disease in the world. In Tibet of the People's Republic of China, echinococcosis refers principally to two types of severe zoonosis, cystic echinococcosis (CE) and alveolar echinococcosis (AE), which place a serious burden on public health and economy in the local community. However, research on the spatial epidemiology of echinococcosis remains inadequate in Tibet, China. Based on the recorded human echinococcosis data, maps of the spatial distribution of human CE and AE prevalence in Tibet were produced at city level and county level respectively, which show that the prevalence of echinococcosis in northern and western Tibet was much higher than that in other regions. We employ a geographical detector to explore the influencing factors for causing CE and AE while sorting information on the maps of disease prevalence and environment factors (e.g. terrain, population, and yak population). The results of our analysis showed that biological factors have the most impact on the prevalence of echinococcosis, of which the yak population contributes the most for CE, while the dog population contributes the most for AE. In addition, the interaction between various factors, as we found out, might further explain the disease prevalence, which indicated that the echinococcosis prevalence is not simply affected by one single factor, but by multiple factors that are correlated with each other complicatedly. Our results will provide an important reference for the evaluation of the echinococcosis risk, control projects, and prevention programs in Tibet.
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Affiliation(s)
- Tian Ma
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Dong Jiang
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
- Key Laboratory of Carrying Capacity Assessment for Resource and Environment, Ministry of Natural Resources of the People’s Republic of China, Beijing, China
| | - Mengmeng Hao
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Peiwei Fan
- Department of Geological Engineering and Environment, China University of Mining and Technology, Beijing, China
| | - Shize Zhang
- Computer Network Information Center, Chinese Academy of Sciences, Beijing, China
| | - Gongsang Quzhen
- Tibet Autonomous Region Center for Diseases Control and Prevention, Lhasa, Tibet Autonomous Region, China
- National Health Council Key Laboratory of Echinococcosis Prevention and Control, Lhasa, Tibet Autonomous Region, China
| | - ChuiZhao Xue
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Key Laboratory of Parasite and Vector Biology, MOH, Shanghai, China
| | - Shuai Han
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Key Laboratory of Parasite and Vector Biology, MOH, Shanghai, China
| | - WeiPing Wu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Chinese Center for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Center for International Research on Tropical Diseases, Ministry of Science and Technology, Key Laboratory of Parasite and Vector Biology, MOH, Shanghai, China
| | - Canjun Zheng
- Chinese Center for Disease Control and Prevention (China CDC), Beijing, China
| | - Fangyu Ding
- State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
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Incidence and risk factors associated with the development of epilepsy in patients with intracranial alveolar echinococcosis. Epilepsy Res 2021; 174:106643. [PMID: 33964794 DOI: 10.1016/j.eplepsyres.2021.106643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 03/17/2021] [Accepted: 04/14/2021] [Indexed: 02/08/2023]
Abstract
Parasitic infection remains a critical health problem in Ganzi Tibetan Autonomous Prefecture of China. The association of epilepsy and intracranial alveolar echinococcosis (IAE) is still largely unclear. This study primarily aimed to assess both the incidence and possible risk factors of epilepsy in patients with IAE. According to the occurrence of seizures, patients were separated into two different groups consisting of patients with epilepsy and those without epilepsy. Univariate and multivariate logistic regression analysis was used to identify the potential risk factors associated with the development of epilepsy in patients with IAE. A total of 97 patients (42 women, 55 men; age 19-76 years) were enrolled. Epilepsy was observed in almost 20 % of patients with IAE. The use of anti-seizure medications was not standardized, as 83.3 % of female patients of childbearing age used sodium valproate. It was observed that cortical lesions (hazard ratio (HR) = 29.740, P = 0.006) were significantly associated with development of epilepsy. In addition, epilepsy had no significant effect on the overall survival rate of patients with IAE.
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Yang SJ, Xiao N, Li JZ, Feng Y, Ma JY, Quzhen GS, Yu Q, Zhang T, Yi SC, Zhou XN. A remote management system for control and surveillance of echinococcosis: design and implementation based on internet of things. Infect Dis Poverty 2021; 10:50. [PMID: 33849655 PMCID: PMC8042360 DOI: 10.1186/s40249-021-00833-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 03/23/2021] [Indexed: 12/26/2022] Open
Abstract
Background As a neglected cross-species parasitic disease transmitted between canines and livestock, echinococcosis remains a global public health concern with a heavy disease burden. In China, especially in the epidemic pastoral communities on the Qinghai-Tibet Plateau, the harsh climate, low socio-economic status, poor overall hygiene, and remote and insufficient access to all owned dogs exacerbate the difficulty in implementing the ambitious control programme for echinococcosis. We aimed to design and implement a remote management system (RMS) based on internet of things (IoT) for control and surveillance of echinococcosis by combining deworming devices to realise long-distance smart deworming control, smooth statistical analysis and result display. New methods and tools are urgently needed to increase the deworming coverage and frequency, promote real-time scientific surveillance, and prevent transmission of echinococcosis in remoted transmission areas. Methods From 2016 to 2019, we had cooperated and developed the smart collar and smart feeder with the Central Research Institute of Shanghai Electric Group Co., Ltd. (Shanghai, China) and Shenzhen Jizhi Future Technology Co., Ltd. (Shenzhen, China). From September 2019 to March 2020, We had proposed the RMS based on IoT as a novel tool to control smart deworming devices to deliver efficient praziquantel (PZQ) baits to dogs regularly and automatically and also as a smart digital management platform to monitor, analyse, and display the epidemic trends of echinococcosis dynamically, in real time in Hezuo City, Gannan Tibetan Autonomous Prefecture, Gansu Province, China. Starting from January 2018, The RMS has been maintained and upgraded by Shanghai Yier Information Technology Co., Ltd (Shanghai, China). The database was based on MySQL tools and the Chi-square test was used to probe the difference and changes of variables in different groups. Results The smart collars are fully capable of anti-collision, waterproof, and cold-proof performance, and the battery’s energy is sufficient, the anti-collision rate, water-proof rate, cold-proof rate and voltage normal rate is 99.6% (521/523), 100.0% (523/523), 100.0% (523/523) and 100.0% (523/523), respectively. The RMS can accurately analyse the monitoring data and parameters including positive rates of canine faeces, and the prevalence of echinococcosis in the general population livestock, and children. The data of dogs deworming and surveillance for echinococcosis is able to be controlled using RMS and has expanded gradually in townships to the whole Hezuo region. The automatic delivering PZQ rate, collar positioning rate, deliver PZQ reminding rate, and fault report rate is 91.1% (1914/2102), 92.1% (13 580/14 745), 92.1% (1936/2102) and 84.7% (1287/1519), respectively. After using the RMS from 2019, the missing rate of monitoring data decreased from 32.1% (9/28) to 0 (0/16). A total of 48 administrators (3, 3, 8, 11, 23 at the provincial, municipal, county, township, village levels, respectively) participated in the questionnaire survey, with 93.8% of its overall satisfaction rate. Conclusions The existing difficulties and challenges in the way of prevention and control for echinococcosis can partially be resolved using the innovative, IoT-based technologies and tools. The proposed RMS advance the upgrade of existing manual prevention and control models for echinococcosis, especially in the current ongoing COVID-19 pandemic, as social distance and community blockade continue. Graphic abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s40249-021-00833-4.
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Affiliation(s)
- Shi-Jie Yang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, (National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention), Shanghai, China.,National Center for International Research on Tropical Diseases, Shanghai, China.,WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Ning Xiao
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, (National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention), Shanghai, China.,National Center for International Research on Tropical Diseases, Shanghai, China.,WHO Collaborating Center for Tropical Diseases, Shanghai, China.,School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing-Zhong Li
- Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, China
| | - Yu Feng
- Department of Parasitic Diseases, Gansu Center for Disease Control and Prevention, Lanzhou, China
| | - Jun-Ying Ma
- Qinghai Institute for Endemic Disease Prevention and Control, Xining, China
| | - Gong-Sang Quzhen
- Tibet Center for Disease Control and Prevention, NHC Key Laboratory of Echinococcosis Prevention and Control, Lhasa, China
| | - Qing Yu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, (National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention), Shanghai, China.,National Center for International Research on Tropical Diseases, Shanghai, China.,WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Ting Zhang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.,NHC Key Laboratory of Parasite and Vector Biology, (National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention), Shanghai, China.,National Center for International Research on Tropical Diseases, Shanghai, China.,WHO Collaborating Center for Tropical Diseases, Shanghai, China
| | - Shi-Cheng Yi
- Shanghai Yier Information Technology Co., Ltd, Shanghai, China
| | - Xiao-Nong Zhou
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China. .,NHC Key Laboratory of Parasite and Vector Biology, (National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention), Shanghai, China. .,National Center for International Research on Tropical Diseases, Shanghai, China. .,WHO Collaborating Center for Tropical Diseases, Shanghai, China. .,School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
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Wang L, Wang Q, Cai H, Wang H, Huang Y, Feng Y, Bai X, Qin M, Manguin S, Gavotte L, Wu W, Frutos R. Evaluation of fecal immunoassays for canine Echinococcus infection in China. PLoS Negl Trop Dis 2021; 15:e0008690. [PMID: 33720943 PMCID: PMC7993806 DOI: 10.1371/journal.pntd.0008690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 03/25/2021] [Accepted: 01/17/2021] [Indexed: 11/21/2022] Open
Abstract
Human echinococcosis is present worldwide but it is in China that disease prevalence is the highest. In western China, especially in the Tibetan Plateau, the burden of echinococcosis is the most important. Dogs are a major definitive host of Echinococcus and monitoring the presence of Echinococcus worms in dogs is therefore essential to efficiently control the disease. Detection kits based on three different technologies including sandwich ELISA, (indirect) ELISA, and gold immunodiffusion, are currently marketed and used in China. The objective of this work was to assess the efficacy of these kits, in particular with respect to sensitivity and specificity. Four fecal antigen detection kits for canine infection reflecting the three technologies were obtained from companies and tested in parallel on 220 fecal samples. The results indicate that the performance is lower than expected, in particular in terms of sensitivity. The best results were obtained with the sandwich ELISA technology. The gold immunofiltration yielded the poorest results. In all cases, further development is needed to improve the performance of these kits which are key components for the control of echinococcosis. Although present worldwide, human echinococcosis is at its highest prevalence in western China and particularly in the Tibetan Plateau. Controlling echinococcosis is a national priority and routine monitoring must be established. Dogs are the main infection source in China and surveying Echinococcus worms in dogs is therefore a research priority. Commercial detection kits are currently in use in China to monitor the presence of Echinococcus in dogs. The kits are based on three different technologies including sandwich ELISA with two monoclonal antibodies, (indirect) ELISA, and gold immunodiffusion. National survey programmes are essential for the control of echinococcosis and it is thus very important to assess the efficacy of these kits for the programmes. This work was therefore undertaken to assess efficacy of the kits, in particular with respect to sensitivity and specificity. Four fecal antigen detection kits for canine infection reflecting the three technologies were obtained from companies and tested in parallel on 220 fecal samples. The performance was lower than expected, in particular for their sensitivity which ranged between 51.5% and 83.9% with only two samples displaying a worm burden lower than 100. Three out of four kits showed non-specific cross-reactions with other parasites. The best results were obtained with the sandwich ELISA technology, whereas gold immunofiltration yielded the poorest results. However, in all cases, further development is strongly needed to improve the performance of these kits which are key components for the control of echinococcosis.
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Affiliation(s)
- Liying Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
- HydroSciences Montpellier (HSM), Institut de Recherche pour le Développement (IRD), CNRS, Université Montpellier, Montpellier, France
- ISEM, UMR 5557, Université de Montpellier, Montpellier, France
- Cirad, UMR 17, Intertryp, Campus international de Baillarguet, Montpellier Cedex 5, France
- IES, Université Montpellier, CNRS, Montpellier Cedex 5, France
- * E-mail: (LW); (WW)
| | - Qian Wang
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China
| | - Huixia Cai
- Qinghai Provincial Institute for Endemic Disease Prevention and Control, Xining, China
| | - Hu Wang
- Qinghai Provincial Institute for Endemic Disease Prevention and Control, Xining, China
| | - Yan Huang
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China
| | - Yu Feng
- Gansu Provincial Center for Disease Control and Prevention, Lanzhou, China
| | - Xuefei Bai
- Sichuan Provincial Center for Disease Control and Prevention, Chengdu, China
| | - Min Qin
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
| | - Sylvie Manguin
- HydroSciences Montpellier (HSM), Institut de Recherche pour le Développement (IRD), CNRS, Université Montpellier, Montpellier, France
| | - Laurent Gavotte
- ISEM, UMR 5557, Université de Montpellier, Montpellier, France
| | - Weiping Wu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
- * E-mail: (LW); (WW)
| | - Roger Frutos
- Cirad, UMR 17, Intertryp, Campus international de Baillarguet, Montpellier Cedex 5, France
- IES, Université Montpellier, CNRS, Montpellier Cedex 5, France
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Wang Y, Ma BC, Wang LY, Quzhen G, Pang HS. Effects of management of infection source of echinococcosis in Linzhi, Tibet Autonomous Region of China. Infect Dis Poverty 2021; 10:25. [PMID: 33676564 PMCID: PMC7936428 DOI: 10.1186/s40249-021-00805-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 02/09/2021] [Indexed: 11/10/2022] Open
Abstract
Background Echinococcosis is highly endemic in western and northern China. Tibet Autonomous Region (TAR) is the most serious prevalent area. Linzhi is located in southeastern part of TAR. Dogs are the primary infection source for the transmission of echinococcosis to humans. A control and prevention campaign based on dog management has been implemented in the past three years. This study aims to evaluate the effects of dog management on the infection rate of dogs. Methods Data of dog population, registration and de-worming of seven counties/district in Linzhi between 2017 and 2019 were obtained from the annual prevention and control report. Domestic dog fecal samples were collected from each endemic town of seven counties/district in Linzhi in 2019 to determine the infection of domestic dogs using coproantigen enzyme-linked immunosorbent assay (ELISA). Data analysis was processed using SPSS statistics to compare dog infection rate between 2016 and 2019 by chi-square test, and maps were mapped using ArcGIS. Results In Linzhi, domestic dog population has decreased from 17 407 in 2017 to 12 663 in 2019, while the registration rate has increased from 75.9% in 2017 to 98.6% in 2019. Similarly, stray dog population has decreased from 14 336 in 2017 to 11 837 in 2019, while sheltered rate has increased from 84.6% in 2017 to 96.6% in 2019. Dog de-worming frequency has increased from 4 times per annum in 2017 to 12 times in 2019, indicating that approximately every dog was dewormed monthly. A total of 2715 dog fecal samples were collected for coproantigen ELISA assay. The dog infection rate was 2.8% (77/2715) in 2019, which was significantly lower than 7.3% (45/618) in 2016 (P < 0.05). Conclusions Increased dog registration, decreased dog population, and increased dog de-worming frequency contributed to significantly decrease the dog infection rate in Linzhi. Control and prevention campaign based on dog management could significantly decrease dog infection with Echinococcus spp. in echinococcosis endemic areas.![]()
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Affiliation(s)
- Ying Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, MOST; Key Laboratory of Parasite and Vector Biology, MOH, Shanghai, 200025, China
| | - Bing-Cheng Ma
- Linzhi Center for Disease Control and Prevention, Linzhi, 850000, China
| | - Li-Ying Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; Chinese Center for Tropical Diseases Research; WHO Collaborating Center for Tropical Diseases; National Center for International Research on Tropical Diseases, MOST; Key Laboratory of Parasite and Vector Biology, MOH, Shanghai, 200025, China. .,Doctorate School of Chemical and Biological Sciences for Health (CBS2), University of Montpellier, Montpellier, 34395, France.
| | - Gongsang Quzhen
- Tibet Center for Disease Control and Prevention, Key Laboratory of Echinococcosis Prevention and Control, National Health Commission, Lhasa, 850000, China
| | - Hua-Sheng Pang
- Tibet Center for Disease Control and Prevention, Key Laboratory of Echinococcosis Prevention and Control, National Health Commission, Lhasa, 850000, China
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Li S, Chen J, He Y, Deng Y, Chen J, Fang W, Zeren Z, Liu Y, Abdulaziz ATA, Yan B, Zhou D. Clinical Features, Radiological Characteristics, and Outcomes of Patients With Intracranial Alveolar Echinococcosis: A Case Series From Tibetan Areas of Sichuan Province, China. Front Neurol 2021; 11:537565. [PMID: 33519658 PMCID: PMC7843382 DOI: 10.3389/fneur.2020.537565] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 12/21/2020] [Indexed: 02/05/2023] Open
Abstract
Objectives: Intracranial alveolar echinococcosis (IAE), a zoonotic disease, is a critical health problem in the Tibetan region. We aimed to describe the clinical and radiological characteristics and outcomes among patients with IAE. Methods: We screened patients diagnosed with IAE between March 2015 and May 2019 at the Ganzi Tibetan Autonomous Prefecture People's Hospital. Detailed demographics, clinical characteristics, neuroimaging features, and outcomes were recorded. Results: A total of 21 patients with an average age of 44.1 ± 12.7 years were included. Thirteen (61.9%) patients were male. The most common chief neurological complaint was headache (n = 17, 81.0%), followed by dizziness, seizure, visual disturbances, hemiparesis, disturbed consciousness, and dysphasia. All the patients had coexisting liver localizations. The typical neuroimaging features of IAE on cerebral magnetic resonance imaging scans showed obvious low-signal shadow with multiple small vesicles inside the lesions on T2-weighted images and FLAIR images. The pathological HE staining demonstrates vesicular lesions with several internal sacs. For hepatic alveolar echinococcosis (AE), the hepatic portal was invaded in six (28.6%) patients, and the portal vein (n = 5, 23.8%) was the mostly commonly involved vessel. As for treatment, 11 patients (52.4%) had poor compliance with albendazole. The duration of patients taken albendazole ranged from 2 months to 3 years. Cerebral AE surgery was performed in 11 patients, five of them underwent partial resection of AE lesions, and six patients received total resection. One patient with primary IAE underwent radical surgery. Ten patients (47.6%) died during the follow-up for a mean of 21.7 ± 11.9 (3–46) months. In total, 28.9% of the patients died within 5 years, and 71.6% died within 10 years. The median interval between the date of diagnosis as AE and death was 84 (19–144) months. Conclusion: Despite substantial advances in diagnostic and therapeutic methods, the treatment of IAE remains difficult and results in unsatisfactory outcomes. The major critical issue is surgical treatment of IAE although the disease is disseminated. Besides, lifelong albendazole would be indicated, but most patients had poor medication compliance. It is important to educate patients about the necessity of medical treatment.
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Affiliation(s)
- Sisi Li
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
| | - Jiani Chen
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
| | - Yongqiao He
- Department of Neurology, Ganzi Tibetan Autonomous Prefecture People's Hospital, Kangding, China
| | - Yongyi Deng
- Department of Neurology, Ganzi Tibetan Autonomous Prefecture People's Hospital, Kangding, China
| | - Jie Chen
- Department of Neurology, Ganzi Tibetan Autonomous Prefecture People's Hospital, Kangding, China
| | - Wenyu Fang
- Department of Neurology, Ganzi Tibetan Autonomous Prefecture People's Hospital, Kangding, China
| | - Zhamu Zeren
- Department of Neurology, Ganzi Tibetan Autonomous Prefecture People's Hospital, Kangding, China
| | - Yadong Liu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
| | | | - Bo Yan
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
| | - Dong Zhou
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China
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Wang Q, Zhong B, Yu W, Zhang G, Budke CM, Liao S, He W, Chen F, Xu K, Xie F, Danbazeli, Wang Q, Yang L, Huang Y, Li R, Yao R, Giraudoux P, Craig PS. Assessment of a 10-year dog deworming programme on the transmission of Echinococcus multilocularis in Tibetan communities in Sichuan Province, China. Int J Parasitol 2020; 51:159-166. [PMID: 33220298 DOI: 10.1016/j.ijpara.2020.08.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 08/14/2020] [Accepted: 08/19/2020] [Indexed: 10/22/2022]
Abstract
Human alveolar echinococcosis (AE) is considered a neglected zoonotic disease by the World Health Organization (WHO). The causative pathogen, Echinococcus multilocularis, lives as an adult tapeworm in the intestinal tract of canines. AE was identified as an emerging public health issue in Tibetan communities of Shiqu County 20 years ago. On St. Lawrence Island, Alaska (USA), in the 1980s peri-domestic transmission of E. multilocularis was controlled by regular deworming of owned dogs over a 10-year period. In Tibetan communities, on the Tibetan Plateau, control of E. multilocularis transmission is challenging due to the continental setting, complex epidemiology, disease ecology, geography, and socio-cultural factors. However, a control programme based on deworming owned dogs using praziquental (PZQ) has been carried out since 2006. Assessment was conducted in townships where baseline data were available 10 years prior. Purging of dogs by oral administration of arecoline was used to measure E. multilocularis prevalence, trapping small mammals around communities was employed to assess the change in infection of pikas and voles, and analysis of human AE abdominal ultrasound-based data was used to understand the change in prevalence in the past decade. In all three evaluated townships, the E. multilocularis prevalence in owned dogs was significantly (P < 0.01) reduced from 7.23% (25/346) during 2000-2003 to 0.55% (1/181) in 2016. Human AE ultrasound-based prevalence (adjusted for age and sex) in five evaluated townships decreased significantly (P < 0.01) from 6.25% (200/3,198) during 2000-2002 to 3.67% (706/19,247) during 2015-2017. The 2016 prevalence of E. multilocularis metacestodes in small mammal intermediate hosts was not significantly different from the prevalence in 2008. The control programme was effective in reducing E. multilocularis infection in owned dogs and human AE prevalence, but did not significantly impact infection in wildlife intermediate hosts.
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Affiliation(s)
- Qian Wang
- Sichuan Provincial Center for Disease Control and Prevention, China.
| | - Bo Zhong
- Sichuan Provincial Center for Disease Control and Prevention, China.
| | - Wenjie Yu
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Guangjia Zhang
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Christine M Budke
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine & Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Sha Liao
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Wei He
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Fan Chen
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Kejun Xu
- Ganzi Prefecture Center for Disease Control and Prevention, China
| | - Fei Xie
- Shiqu County Center for Disease Control and Prevention, China
| | - Danbazeli
- Ganzi Prefecture Center for Disease Control and Prevention, China
| | - Qi Wang
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Liu Yang
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Yan Huang
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Ruirui Li
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Renxing Yao
- Sichuan Provincial Center for Disease Control and Prevention, China
| | - Patrick Giraudoux
- UMR 6249 Laboratoire Chrono-Environnement, University of Franche-Comté, Besançon, France
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Yin J, Gongsang Q, Wang L, Li C, Wu X. Identification of vulnerable populations and knowledge, attitude, and practice analysis of echinococcosis in Tibet Autonomous Region of China. ENVIRONMENTAL RESEARCH 2020; 190:110061. [PMID: 32810501 DOI: 10.1016/j.envres.2020.110061] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 08/06/2020] [Accepted: 08/08/2020] [Indexed: 06/11/2023]
Abstract
Echinococcosis is one of the 17 neglected tropical diseases recognized by the World Health Organization and causes a huge global disease burden. The Tibet Autonomous Region (Tibet) of China is the most epidemic area of echinococcosis worldwide. Echinococcosis poses an enormous threat to local public health and economic development. Identifying vulnerable populations and analyzing people's knowledge, attitudes, and practices (KAP) with respect to echinococcosis is necessary to prevent and control echinococcosis. Based on reported cases and questionnaire responses, we first used a k-prototypes clustering algorithm to identify vulnerable populations according to human demographics (including gender, age, education level, and occupation). We then used a KAP analysis to evaluate the Tibetan people's understanding of echinococcosis. The results identified three types of vulnerable population. Vulnerable population I comprised illiterate middle-aged and older women engaged in agriculture and animal husbandry. Vulnerable population II comprised illiterate middle-aged male herdsmen. Vulnerable population III comprised young male farmers with a low education level. The KAP analysis indicated that the pass rate for all participants was 72.6%, 6.4%, 95.0%, and 75.8% for KAP, K, A, and P, respectively. The pass rates were significantly different among different age and gender groups. Based on these results, it is necessary to improve public health education and professional training, and to implement effective control and management measures targeting typical hosts of echinococcosis. This study provides a direct reference for the prevention and control of echinococcosis in Tibet.
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Affiliation(s)
- Jie Yin
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China
| | - Quzhen Gongsang
- Tibet Center for Disease Control and Prevention, Lhasa, 850010, China
| | - Liying Wang
- National Institute of Parasitic Disease, Chinese Center for Disease Control and Prevention, Key Laboratory of Parasite and Vector Biology, Ministry of Health, WHO Collaborating Center for Tropical Disease, Shanghai, 200025, China; Doctorate School of Chemical and Biological Sciences for Health (CBS2), University of Montpellier, 34395, Montpellier, France
| | - Chenlu Li
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China
| | - Xiaoxu Wu
- State Key Laboratory of Remote Sensing Science, College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China.
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Taeniid cestodes in Tibetan foxes ( Vulpes Ferrilata) detected by copro-PCR: Applications and challenges. INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2020; 12:242-249. [PMID: 32714830 PMCID: PMC7369422 DOI: 10.1016/j.ijppaw.2020.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 06/28/2020] [Accepted: 06/29/2020] [Indexed: 11/22/2022]
Abstract
Tibetan foxes (Vulpes ferrilata) have been confirmed as the main wild definitive hosts in echinococcosis transmission in the eastern Tibetan Plateau. However, little information is available about the epidemiology in wildlife from the perspective of the Taeniidae family, which is essential knowledge in understanding the epidemiology and phylogeography of cestode species in the Tibetan plateau. Therefore, in this study, we used copro-PCR techniques, by amplifying nad1 and cox1 gene fragments, to detect the taeniid species from Tibetan fox feces collected in Shiqu County, (Sichuan Province, China), eastern Tibetan Plateau. Phylogenetic relationships between amplified sequences and existed Taenia species genotypes were evaluated. Then, the maximum prevalence (positive PCR results from at least one primer pair) and the conservative prevalence (positive PCR results from at least two primer pairs) were calculated. Thirty-six Tibetan fox feces were analyzed. Echinococcus multilocularis (conservative prevalence ± 95% CI: 22.2% ± 13.6%; maximum prevalence ± 95% CI: 33.3% ± 15.4%) and E. shiquicus (2.8 ± 5.4%; 8.3 ± 9.0%) was detected. Meanwhile, DNA fragments of T. polyacantha were detected with high similarity to NCBI sequences (cox1, 94.0%) and to the larva sample DNA sequenced in this study (93.4%), and were supported by phylogenetic analysis. Thus, T. polyacantha might infect Tibetan foxes (5.6% ± 7.5%, 11.1% ± 10.3%). Our limited findings in the epidemiology of parasitic Taenia species suggest that sylvatic transmission cycles for a more species-rich Taeniid community must be established between wild canids and small mammals than just for the two Echinococcus species. Besides, discrepancies in different primer pairs in detecting the taeniid species were evaluated. The sensitivity of some widely used universal primer pairs was poor in detecting Taenia species from canid copro-DNA samples. It is still challenging to the development of effective taeniid species-specific molecular markers especially for non-zoonotic species. Taeniidae species DNA was detected in Tibetan fox feces. A novel primer was developed exclusively for Taeniidae species.
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Weng X, Mu Z, Wei X, Wang X, Zuo Q, Ma S, Ding Y, Wang X, Wu W, Craig PS, Wang Z. The effects of dog management on Echinococcus spp. prevalence in villages on the eastern Tibetan Plateau, China. Parasit Vectors 2020; 13:207. [PMID: 32317015 PMCID: PMC7175499 DOI: 10.1186/s13071-020-04082-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 04/13/2020] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The pastoral area of the eastern Tibetan Plateau is highly endemic for human echinococcosis. Domestic dogs are the main definitive host for the transmission of both Echinococcus granulosus (sensu lato) and E. multilocularis to humans. To control the infection risks, a national-level canine echinococcosis prevention and control programme has been implemented since 2015 in Shiqu County, Ganze Tibetan Autonomous Prefecture, Sichuan, China. The objective of this study was to evaluate its effect on Echinococcus spp. prevalence in dogs. METHODS We surveyed 69 households with 84 owned dogs, for dog fecal samples and dog keeping information in the villages of Rizha and Eduoma. A total of 105 dog fecal samples (75 from owned dogs and 30 unknown dog fecal samples) were collected between 2015-2017 to determine Echinococcus spp. prevalence using copro-PCR. Eight variables based on household surveys were included into a logistic regression model for significant risk factors to canine echinococcosis prevalence in dogs. RESULTS Between 2015-2017, the overall Echinococcus spp. copro-DNA prevalence decreased significantly in dogs from 51.2% (2015) to 20.0% (2017) in Rizha, and insignificantly from 11.5% (2016) to 4.3% (2017) in Eduoma. Echinococcus multilocularis was the most prevalent species continually copro-DNA detected during the entire study period, while E. granulosus was rare and not detected in 2017. Echinococcus shiquicus copro-DNA prevalence (a probable non-zoonotic wildlife species) was as high in dogs as that of E. multilocularis, although only detected in 2015 in Rizha. Unleashed dog feces were mainly collected in Rizha in 2015. Although 93.2% of owned dogs were leashed, and the monthly praziquantel dosing rate reached 97%, E. multilocularis infection could still be detected in 11.1% of owned dogs in 2017. Monthly deworming, leashing dogs 24 h per day, and the avoidance of dogs feeding on livestock viscera were significant measures to prevent canine echinococcosis infection in owned dogs. CONCLUSIONS Carrying out a canine echinococcosis prevention and control programme can significantly decrease Echinococcus spp. prevalence. The potential contact between leashed dogs and wild small mammals is still a risk for re-infection of owned dogs with E. multilocularis. This study shows that the long-term application of regular dog treatment with praziquantel in the vast and remote echinococcosis endemic areas of the eastern Tibetan Plateau can reduce transmission in dogs but remains a challenging intervention.
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Affiliation(s)
- Xiaodong Weng
- School of Life Sciences, East China Normal University, Shanghai, China
| | - Zhiqiang Mu
- School of Life Sciences, East China Normal University, Shanghai, China
| | - Xu Wei
- School of Life Sciences, East China Normal University, Shanghai, China
| | - Xu Wang
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
| | - Qingqiu Zuo
- School of Life Sciences, East China Normal University, Shanghai, China
| | - Shuo Ma
- School of Life Sciences, East China Normal University, Shanghai, China
| | - Youzhong Ding
- School of Life Sciences, East China Normal University, Shanghai, China
| | - Xiaoming Wang
- School of Life Sciences, East China Normal University, Shanghai, China.,Shanghai Science and Technology Museum, Shanghai, China
| | - Weiping Wu
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China
| | - Philip S Craig
- School of Environment and Life Sciences, University of Salford, Greater Manchester, UK
| | - Zhenghuan Wang
- School of Life Sciences, East China Normal University, Shanghai, China. .,Joint Translational Science & Technology Research Institute, East China Normal University, Shanghai, China. .,Shanghai Key Laboratory of Urbanization and Ecological Restoration, East China Normal University, Shanghai, China.
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Lass A, Ma L, Kontogeorgos I, Xueyong Z, Li X, Karanis P. Contamination of wastewater with Echinococcus multilocularis - possible implications for drinking water resources in the QTP China. WATER RESEARCH 2020; 170:115334. [PMID: 31794889 DOI: 10.1016/j.watres.2019.115334] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 11/20/2019] [Accepted: 11/23/2019] [Indexed: 06/10/2023]
Abstract
Echinococcus multilocularis is a parasite that causes a dangerous zoonosis, alveolar echinococcosis (AE). Its presence in water sources, however, has scarcely been studied heretofore. Accordingly, 222 samples of different origin including wastewater from wastewater treatment plants (WWTPs) (n = 137), slaughterhouse (n = 49) as well as water from rivers (n = 26) and a cattle farm (n = 10) were collected from Xining City and a rural area in Qinghai-Tibet Plateau (QTP), an endemic area. Material obtained after processing of 10 L volume samples was subsequently analysed using three molecular detection methods: nested PCR, real-time PCR and LAMP. E. multilocularis DNA was found in 13 (5.85%) water samples; including 8 (5.8%), 3 (6%), 2 (20%) and 0 positive samples found in WWTPs, a slaughterhouse, a cattle farm and rivers, respectively. All three (LAMP, PCR, RT-PCR) molecular tools displayed high agreement and effectiveness in their ability of detecting the parasite's DNA in environmental material. This is the first investigation describing E. multilocularis detection in wastewater samples, using three sensitive molecular diagnostic tools. Results indicate the role of wastewater in dissemination of E. multilocularis and the risk of contamination of water sources.
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Affiliation(s)
- Anna Lass
- State Key Laboratory of Plateau Ecology and Agriculture, Center for Biomedicine and Infectious Disease, Qinghai University, 1#Wei'er Road, Qinghai Biological Scientific Estate Garden, Xining, 810016, PR China; Department of Tropical Parasitology, Institute of Maritime and Tropical Medicine in Gdynia, Medical University of Gdansk, 9b Powstania Styczniowego Str, 81-519, Gdynia, Poland
| | - Liqing Ma
- State Key Laboratory of Plateau Ecology and Agriculture, Center for Biomedicine and Infectious Disease, Qinghai University, 1#Wei'er Road, Qinghai Biological Scientific Estate Garden, Xining, 810016, PR China
| | - Ioannis Kontogeorgos
- Marine Sciences Department, School of Environment, University of the Aegean, University Hill, 88 100, Mytilene, Greece
| | - Zhang Xueyong
- State Key Laboratory of Plateau Ecology and Agriculture, Center for Biomedicine and Infectious Disease, Qinghai University, 1#Wei'er Road, Qinghai Biological Scientific Estate Garden, Xining, 810016, PR China
| | - Xiuping Li
- State Key Laboratory of Plateau Ecology and Agriculture, Center for Biomedicine and Infectious Disease, Qinghai University, 1#Wei'er Road, Qinghai Biological Scientific Estate Garden, Xining, 810016, PR China
| | - Panagiotis Karanis
- State Key Laboratory of Plateau Ecology and Agriculture, Center for Biomedicine and Infectious Disease, Qinghai University, 1#Wei'er Road, Qinghai Biological Scientific Estate Garden, Xining, 810016, PR China; University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany; Nicosia University Medical School, Department of Basic and Clinical Sciences, Nicosia, 2408, Cyprus.
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Shan X, Chen Y, Liu K, Zhang S, Yu J, Yin J, Kaji L, Song R, Wang Y, Wang Y, Qing Y, Li S, Yang Z, Zhang H. Health-related quality of life (HRQoL) associated with echinococcosis patients in Tibetan communities in Shiqu County, China: a case–control study. Qual Life Res 2020; 29:1559-1565. [DOI: 10.1007/s11136-020-02424-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2020] [Indexed: 01/20/2023]
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Simultaneous Hydatid Cyst of the Liver and Left Iliac Fossa: An Unusual Case Report. Case Rep Surg 2019; 2019:9101425. [PMID: 31565460 PMCID: PMC6745177 DOI: 10.1155/2019/9101425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 08/27/2019] [Indexed: 12/28/2022] Open
Abstract
Hydatid disease is a significant health problem in many livestock-rearing areas especially in the developing world, mainly caused by Echinococcus granulosus. The liver and lung are the most common affected sites. However, hydatid disease can occur anywhere in the body. Simultaneous involvement of two organs or sites is very unusual, mainly for organs other than the lung and liver. We thus report a very unusual combination of hepatic and left iliac fossa with hydatid disease in an adult patient. A 37-year-old farmer from a village presented with intermittent right upper quadrant and left iliac fossa pain associated with distention of abdomen for one month. Abdominal radiological investigations reported hydatid cyst disease; one cyst was found in the right lobe of the liver and another in the left iliac fossa. Positive IgG antibody by the ELISA test also confirmed the diagnosis. Pericystectomy and excision of hydatid cyst without spillage of content for the liver and left iliac fossa were done, respectively. Patient was discharged on the 10th postoperative day with an uneventful postoperative course. There was no recurrence of the lesion during one-year follow-up period. A combination of hydatid disease in the liver and iliac fossa is very unusual, so clinician should have thoughts regarding this rare entity as an important differential diagnosis.
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Long-term retrospective assessment of a transmission hotspot for human alveolar echinococcosis in mid-west China. PLoS Negl Trop Dis 2019; 13:e0007701. [PMID: 31469833 PMCID: PMC6742415 DOI: 10.1371/journal.pntd.0007701] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 09/12/2019] [Accepted: 08/13/2019] [Indexed: 11/19/2022] Open
Abstract
Background Human alveolar echinococcosis caused by infection with Echinococcus multilocularis is one of the most potentially pathogenic helminthic zoonoses. Transmission occurs involving wildlife cycles typically between fox and small mammal intermediate hosts. In the late 1980s/early 1990s a large focus of human AE was identified in poor upland agricultural communities in south Gansu Province, China. More detailed investigations in 1994–97 expanded community screening and identified key risk factors of dog ownership and landscape type around villages that could support susceptible rodent populations. A crash of the dog population (susceptible domestic definitive host) in the early 1990s appeared to stop transmission. Methodology/Findings We subsequently undertook follow-up eco-epidemiological studies based on human population screening and dog survey, in 2005/6 and in 2014/15. Our observations show a decrease in human AE prevalence, especially marked in the 11–30 year old age category. In 2015, although the dog population had recovered and in addition, forest protection and the reforestation of some areas may have favoured red fox (wild definitive host) population growth, there was no evidence of infection in owned dogs. Conclusions/Significance Those observations suggest that over decades socio-ecological changes resulted in a cascade of factors that exacerbated and then interrupted parasite emergence, with probable elimination of peri-domestic transmission of E. multilocularis in this area, despite the relative proximity of large active transmission foci on the eastern Tibetan Plateau. This study case exemplifies how anthropogenic land use and behavioural changes can modify emergence events and the transmission of endemic zoonotic parasite infections, and subsequently the importance of considering processes over the long-term in a systems approach in order to understand pathogen and disease distribution. Human alveolar echinococcosis caused by infection with Echinococcus multilocularis is one of the most potentially pathogenic helminthic zoonoses. Transmission occurs involving wildlife cycles typically between fox and small mammal intermediate hosts. A large focus of human alveolar echinococcosis was identified in the late 1980s in poor upland agricultural communities in south Gansu Province, China, and has been monitored until 2015. Observations suggest that over decades landscape and socio-ecological changes resulted in a cascade of factors that exacerbated and then interrupted parasite emergence, with probable elimination of peri-domestic transmission of E. multilocularis in this area, despite the relative proximity of large active transmission foci on the eastern Tibetan Plateau. This study case exemplifies how anthropogenic land use and behavioural changes can modify emergence events and the long-term transmission of endemic parasitic infections, and subsequently the importance of considering disease ecology transmission socio-ecosystems in order to understand parasite and disease distribution.
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