36,673 results match your criteria Trematode Infection


Ileal proteomic changes associated with IL-25-mediated resistance against intestinal trematode infections.

Parasit Vectors 2020 Jul 2;13(1):336. Epub 2020 Jul 2.

Área de Parasitología, Departamento de Farmacia y Tecnología Farmacéutica y Parasitología, Facultad de Farmacia, Universitat de València, Avda. Vicent Andrés Estellés s/n, 46100, Burjassot, Valencia, Spain.

Background: Echinostoma caproni (Trematoda: Echinostomatidae) is an intestinal trematode, which has been extensively used to investigate the factors that determine the rejection of intestinal helminths. In this sense, several studies have shown that IL-25 is critical for the development of resistance against E. caproni in mice. Read More

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http://dx.doi.org/10.1186/s13071-020-04206-yDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7331265PMC

High Prevalence of Clonorchis sinensis and Other Zoonotic Trematode Metacercariae in Fish from a Local Market in Yen Bai Province, Northern Vietnam.

Korean J Parasitol 2020 Jun 26;58(3):333-338. Epub 2020 Jun 26.

Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727, Korea.

A small survey was performed to investigate the recent infection status of Clonorchis sinensis and other zoonotic trematode metacercariae in freshwater fish from a local market of Yen Bai city, Yen Bai province, northern Vietnam. A total of 118 fish in 7 species were examined by the artificial digestion method on March 2016. The metacercariae of 4 species of zoonotic trematodes, i. Read More

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http://dx.doi.org/10.3347/kjp.2020.58.3.333DOI Listing

Liver fluke infections by Amphimerus sp. (Digenea: Opisthorchiidae) in definitive and fish intermediate hosts in Manabí province, Ecuador.

PLoS Negl Trop Dis 2020 Jun 29;14(6):e0008286. Epub 2020 Jun 29.

Department of Parasitology, National Institute of Infectious Diseases, Tokyo, Japan.

Amphimerus sp. is a fluke that dwells in the biliary tracts of vertebrate definitive hosts including humans, domestic, and wild mammals in Latin America. Opisthorchiid liver infections are rarely studied in the Americas confirming its status as a neglected tropical disease. Read More

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http://dx.doi.org/10.1371/journal.pntd.0008286DOI Listing

Host-parasite interaction between trematode, Clinostomum marginatum (Clinostomidae) and armoured catfish, Pterygoplichthys pardalis (Loricariidae) from Brazilian Amazon.

Ann Parasitol 2020 ;66(2):243-249

Instituto de Ciências e Tecnologia das Águas - ICTA, Universidade Federal do Oeste do Pará - UFOPA, Av. Mendonça Furtado, nº 2946, Fátima, CEP 68040-470, Santarém, Pará, Brasil.

Clinostomid trematodes are only widely studied due to the ability to infect their metacercariae, which can affect amphibians, fish, snakes and occasionally mammals, with occasional records in humans. The Loricariids constitute the most diverse family of neotropical fish, with more than 800 registered species. They present a large heterogeneity of colors and body forms that reflect its high degree of ecological specialization and importance on economic aspects such as ornamentation and food. Read More

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http://dx.doi.org/10.17420/ap6602.261DOI Listing
January 2020

Behavioral changes in host foraging: Experiments with Clinostomum (Trematoda, Digenea) parasitizing Loricariichthys platymetopon (Loricariidae).

Exp Parasitol 2020 Jun 23;216:107916. Epub 2020 Jun 23.

Laboratório de Ictioparasitologia, Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura-Nupélia, Universidade Estadual de Maringá, Bloco G-90, Av. Colombo, 5790, CEP 87020-900, Maringá, PR, Brazil; Programa de Pós-Graduação em Biologia comparada PGB - UEM, Brazil. Electronic address:

Complex life cycle parasites can manipulate the behavior of intermediate hosts in order to reduce their fitness and increase the chance of completing life cycle. In order to understand the effects of the trematode parasites of the genus Clinostomum on host fish Loricariichthys platymetopon, a filmed experiment was carried out to quantify the foraging activity of hosts with different intensities of infection. The results suggest that hosts with higher parasite intensities reduced foraging activity early in the morning when compared to hosts with low intensities. Read More

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http://dx.doi.org/10.1016/j.exppara.2020.107916DOI Listing

Lecithochirium monticellii digenetic trematode parasites of Trichiurus lepturus (Actinopterygii) from the state of Rio de Janeiro, Brazil, with notes on its taxonomy.

An Acad Bras Cienc 2020 22;92(2):e20190161. Epub 2020 Jun 22.

Universidade Federal Fluminense/UFF, Programa de Pós-graduação em Microbiologia e Parasitologia Aplicadas, Departamento de Microbiologia e Parasitologia, Instituto Biomédico, Rua Hernani de Mello, 101, São Domingos, 24210-130 Niterói, RJ, Brazil.

Trichiurus lepturus (Actinopterygii, Perciformes) is a commercially and economically important fish. A total of 60 specimens of this cutlassfish were collected of the coast the municipalities of Niterói and Cabo Frio, state of Rio de Janeiro, Brazil. The fish were measured, necropsied, filleted and had their organs investigated for digenetic trematodes. Read More

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http://dx.doi.org/10.1590/0001-3765202020190161DOI Listing
June 2020
0.875 Impact Factor

Confirmation of the presence of zoonotic Trichobilharzia franki following a human cercarial dermatitis outbreak in recreational water in Slovakia.

Parasitol Res 2020 Jun 20. Epub 2020 Jun 20.

Institute of Parasitology, Slovak Academy of Sciences, Košice, Slovakia.

Human cercarial dermatitis is a parasitic disease that causes an allergic reaction in the skin (swimmer's itch) as a consequence of contact with cercariae of bird schistosomes present in water, mainly of the genus Trichobilharzia Skrjabin et Zakarow, 1920. The main objective of the study was to confirm the presence of the zoonotic disease agent following reports of human infections in recreational water in Slovakia. We identified two species of freshwater snails at Košice Lake, Radix auricularia (Linnaeus, 1758) and Physa acuta (Draparnaud, 1805). Read More

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http://dx.doi.org/10.1007/s00436-020-06751-yDOI Listing

Sonographic findings of pinpoint hyperechoic foci in the small intestine, liver, and mesenteric lymph nodes are indicative of canine Heterobilharzia americana infection.

Vet Radiol Ultrasound 2020 Jun 14. Epub 2020 Jun 14.

Diagnostic Imaging, Gulf Coast Veterinary Specialists, Houston, Texas.

Canine schistosomiasis, caused by the trematode Heterobilharzia americana, can pose a diagnostic challenge due to nonspecific symptoms. The aim of this multicenter, retrospective, descriptive study was to compare the prevalence and extent of sonographic changes associated with schistosomiasis between affected and infection-free dogs. Medical records of two referral centers were searched for dogs with confirmed schistosomiasis that had undergone an abdominal ultrasound. Read More

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http://dx.doi.org/10.1111/vru.12874DOI Listing

Discovery of Carcinogenic Liver Fluke Metacercariae in Second Intermediate Hosts and Surveillance on Fish-Borne Trematode Metacercariae Infections in Mekong Region of Myanmar.

Int J Environ Res Public Health 2020 Jun 9;17(11). Epub 2020 Jun 9.

Tropical and Parasitic Disease Research Unit, Mahasarakham University, Mahasarakham 44000, Thailand.

Countries of lower Mekong regions are highly alarmed by the spread of fish-borne trematode infections, i.e., small liver flukes and minute intestinal flukes especially in Thailand, Lao People's Democratic Republic (Lao PDR), Vietnam, Cambodia and Myanmar. Read More

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http://dx.doi.org/10.3390/ijerph17114108DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7312695PMC

How climate change affects parasites: the case of trematode parasite and its fish host .

J Parasit Dis 2020 Jun 14;44(2):476-480. Epub 2020 Mar 14.

Department of Biochemistry, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India.

This study was undertaken to understand the impact of climate change on the ecology of infection of , a model trematode parasite. We analysed climate change data and data from infected fish over a period of seven years (2007-2013) from the Aligarh region (India) in this retrospective study. We show that infection of the trematode parasite (Rudolphi, 1814) in the forage fish is dependent on surface air temperature amongst the (ecologically) relevant climate change variables for both the parasite and its host. Read More

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http://dx.doi.org/10.1007/s12639-020-01214-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7244695PMC

[Breast schistosomiasis japonica: a case report].

Authors:
H B Wang D Huang

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(3):326-327

Yueyang Second People's Hospital, Hunan Province, China.

A case with breast schistosomiasis japonica was reported. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020079DOI Listing

[Difficulties and countermeasures for the perioperative management of megasplenectomy in patients with advanced schistosomiasis].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Jan;32(3):323-325

Hunan Institute of Parasitic Diseases, WHO Collaborating Center on Schistosomiasis Control in Lake Regions, Hunan Key Laboratory of Immunology and Transmission Control of Schistosomiasis, National Key Clinical Specialty, Yueyang 414000, China.

The etiology, pathology, clinical features and prognosis of megalosplenic advanced schistosomiasis have their specific features, and therefore, the perioperative management of this disorder has special countermeasures. The review analyzes the difficult problems in the perioperative management of megalosplenic advanced schistosomiasis, including ultra - low platelet counts, extensive and severe adhesive splenomegaly, massive hemorrhage during surgery and portal vein thrombosis, and proposes countermeasures to tackle these problems, with aims to guide the clinical treatment and cure of schistosomiasis, thereby improving the prognosis, reducing complications and improving the quality of life. Read More

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http://dx.doi.org/10.16250/j.32.1374.2019265DOI Listing
January 2020

[Progress of schistosomiasis control in Dongting Lake regions].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(3):320-322

Hunan Institute of Parasitic Diseases, WHO Collaborating Center on Schistosomiasis Control in Lake Regions, Hunan Key Laboratory of Immunology and Transmission Control of Schistosomiasis, National Key Clinical Specialty, Yueyang 414000, China.

As an ancient parasitic disease, schistosomiasis has been endemic in Dongting Lake areas for more than 2 100 years. In the early 20th century, the first human case of schistosomiasis in China was reported in Dongting Lake areas, which was paid extensive attention. After the founding of the People's Republic of China, large-scale schistosomiasis control activities were launched promptly in Dongting Lake areas, and great successes have been achieved following the three stages of control efforts, including the snail control-based stage, synchronous chemotherapy for humans and livestock-based control stage and infectious source control-based control stage. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020064DOI Listing

[Endemic situation of schistosomiasis in Hunan Province in 2019].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(3):317-319

Hunan Institute of Parasitic Diseases, WHO Collaborating Center on Schistosomiasis Control in Lake Regions, Hunan Key Laboratory of Immunology and Transmission Control of Schistosomiasis, National Key Clinical Specialty, Yueyang 414000, China.

Objective: To analyze the endemic situation of schistosomiasis in Hunan Province in 2019, so as to provide insights into the achievement of transmission interruption of schistosomiasis in the province in 2020.

Methods: The data pertaining to infections in humans and livestock and snail status were captured from Hunan Province in 2019 and analyzed.

Results: Schistosomiasis was endemic in 281 townships (towns) from 41 counties (districts) of 6 cities in Hunan Province by the end of 2019. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020057DOI Listing

[Investigation of epidemic status of clonorchiasis sinensis in western regions of Jilin Province].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2019 Oct;32(3):314-316

Jilin Provincial Center for Disease Control and Prevention, Changchun 130062, China.

Objective: To understand the epidemic status of clonorchiasis sinensis in western region of Jilin Province, so as to provide the evidence for formulating the planning and strategy of prevention and control of the disease.

Methods: In 2017, the areas where the residents had the customs of eating Sashimi were selected as the research areas in the western region of Jilin Province, and according to the cluster sampling, 25 villages in 25 towns (each village per town) of 5 counties in the region were selected as the investigation points. The basic information of crowd was collected by a questionnaire investigation. Read More

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http://dx.doi.org/10.16250/j.32.1374.2018149DOI Listing
October 2019

[Survey of the capacity building of the county-level schistosomiasis diagnosis network laboratory in Hunan Province].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(3):311-313

Department of Parasitology, School of Basic Medical Sciences, Central South University, China.

Objective: To examine the construction and operation of the schistosomiasis diagnostic network platform in Hunan Province, so as to provide insights into the improvements of the schistosomiasis diagnostic network laboratory system in the province.

Methods: According to the criteria and requirements for the construction of the county-level schistosomiasis diagnostic network laboratory in China, the establishment and operation of the laboratory were assessed using self-assessment and field review in national schistosomiasis surveillance sites of Hunan Province.

Results: A total of 41 county-level schistosomiasis diagnostic network laboratories were built in national schistosomiasis surveillance sites of Hunan Province, and 36 met the requirements for the construction of the national schistosomiasis diagnostic network laboratory in China, which were approved for inclusion in the province-level schistosomiasis diagnostic network laboratory. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020053DOI Listing

[Effect of rational emotive therapy on negative emotion in advanced schistosomiasis patients with repeated hospitalization].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(3):308-310

Hunan Institute of Parasitic Diseases, WHO Collaborating Center on Schistosomiasis Control in Lake Regions, Hunan Key Laboratory of Immunology and Transmission Control of Schistosomiasis, National Key Clinical Specialty, Yueyang 414000, China.

Objective: To examine the effect of rational emotive therapy on negative emotions among advanced schistosomiasis patients with repeated hospitalizations.

Methods: A total of 97 advanced schistosomiasis patients with anxiety and depressive emotions that were hospitalized in Xiangyue Hospital of Hunan Institute of Schistosomiasis Control for three times or more were enrolled, and given rational emotive therapy for 4 weeks in addition to routine nursing care. The scores for anxiety, depression and quality of life were estimated in patients before and after the rational emotive therapy using the Self-Rating Anxiety Scale (SRS), the Self-Rating Depression Scale (SDS) and WHOQOL-BREF Form. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020098DOI Listing

[Serum vitamin D expression in advanced schistosomiasis patients with hepatic fibrosis and its association with disease progression].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2019 Nov;32(3):304-307

Department of Schistosomiasis, The First Hospital of Jiaxing City, Zhejiang Province, China.

Objective: To compare the expression of serum vitamin D in advanced schistosomiasis patients with grade I and II hepatic fibrosis, and to preliminarily examine its associations with the internal diameter of the main portal vein and progression of hepatic fibrosis.

Methods: The medical records of 126 advanced schistosomiasis patients with grade I and II hepatic fibrosis referred to Jiaxing First Hospital from March 2012 to September 2015 were retrospectively analyzed. The internal diameter of the main portal vein and serum 25-hydroxyvitamin D3 [25(OH)D3] level were measured. Read More

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http://dx.doi.org/10.16250/j.32.1374.2019122DOI Listing
November 2019

[Endemic situation of schistosomiasis in national surveillance sites of Anhui Province from 2015 to 2018].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(3):301-303

Anhui Institute of Schistosomiasis Control, Hefei 230061, China.

Objective: To analyze the endemic situation of schistosomiasis in national surveillance sites of Anhui Province from 2015 to 2018, so as to provide scientific evidence for schistosomiasis control and prevention in Anhui Province.

Methods: According to the National Schistosomiasis Surveillance Programme (2014 version), a total of 51 national schistosomiasis surveillance sites were assigned in Anhui Province in 2015, and infections in humans and livestock and snail distribution were monitored from 2015 to 2018.

Results: A total of 89 638 local residents and 42 609 mobile populations received serological screening of schistosomiasis in 51 national surveillance sites of Anhui Province from 2015 to 2018, and the sero-prevalence of infections was 1. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020028DOI Listing

[Impact of gender on hepatic pathology and antibody - mediated immunity caused by infection in C57BL/6 mice].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 May;32(3):255-261

Department of Pathogenic Biology, Nanjing Medical University, Nanjing 211166, China.

Objective: To investigate the effect of gender on hepatic pathology and antibody-mediated immunity in -infected C57BL/6 mice.

Methods: Female and male C57BL/6 mice were infected with , and the hepatic pathological changes were observed using HE and picrosirius red staining in mice 8 weeks post-infection. The serum specific IgG antibody levels against the soluble adult worm antigen (SWA) and soluble egg antigen (SEA) were measured in mice using enzyme-linked immunosorbent assay (ELISA), and the percentages of follicular helper T (Tfh) cells and regulatory T (Treg) cells were detected in mouse spleen and lymph nodes using flow cytometry. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020010DOI Listing

[Endemic situation of schistosomiasis in national surveillance sites of Hunan Province from 2015 to 2019].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 May;32(3):242-247

Hunan Institute of Parasitic Diseases, WHO Collaborating Center on Schistosomiasis Control in Lake Regions, Hunan Key Laboratory of Immunology and Transmission Control of Schistosomiasis, National Key Clinical Specialty, Yueyang 414000, China.

Objective: To analyze the changes in the endemic situation of schistosomiasis in national surveillance sites of Hunan Province, so as to provide scientific basis for the development of the schistosomiasis elimination programme in the province.

Methods: According to the requirements of the National Guidelines for Schistosomiasis Surveillance in China (2014 version), a total of 41 national schistosomiasis surveillance sites were assigned in all disease-endemic counties (districts) across Hunan Province. During the period between 2015 and 2019, infections were monitored in local residents, mobile populations and livestock, and snail status was monitored. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020059DOI Listing

[Application of the exponential smoothing model and ARIMA model in prediction of the endemic situation of schistosomiasis in Hunan Province].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(3):236-241

Hunan Institute of Parasitic Diseases, WHO Collaborating Center on Schistosomiasis Control in Lake Regions, Hunan Key Laboratory of Immunology and Transmission Control of Schistosomiasis, National Key Clinical Specialty, Yueyang 414000, China.

Objective: To predict the changes in the prevalence of infections in humans and livestock in Hunan Province using the exponential smoothing model and the ARIMA model.

Methods: The data pertaining to infections in humans and livestock in Hunan Province from 1957 to 2015 were collected, and the exponential smoothing model and the ARIMA model were created using the software Eviews and PASW Statistics 18.0. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020021DOI Listing

[Effect of integrated schistosomiasis control measures in Hunan Province from 2004 to 2019].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 May;32(3):230-235

Hunan Institute of Parasitic Diseases, WHO Collaborating Center on Schistosomiasis Control in Lake Regions, Hunan Key Laboratory of Immunology and Transmission Control of Schistosomiasis, National Key Clinical Specialty, Yueyang 414000, China.

Objective: To examine the effect of the integrated schistosomiasis control measures in Hunan Province from 2004 to 2019, so as to provide insights into the development of the schistosomiasis elimination strategy.

Methods: The integrated schistosomiasis control measures implemented by the health, agriculture, water resources, forestry, land and resources sectors were retrospectively collected in Hunan Province from 2004 to 2019, and the completion of each measure, cost of control measures, infections in humans and bovines, and snail status were analyzed each year. An index system for assessing the integrated schistosomiasis control effect was constructed using the Delphi method to calculate the integrated schistosomiasis control effect index. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020067DOI Listing

[Challenges and countermeasures of schistosomiasis control in Hunan Province in the new era].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(3):225-229

Hunan Institute of Parasitic Diseases, WHO Collaborating Center on Schistosomiasis Control in Lake Regions, Hunan Key Laboratory of Immunology and Transmission Control of Schistosomiasis, National Key Clinical Specialty, Yueyang 414000, China.

This paper describes the current epidemic characteristics and endemic status of schistosomiasis, analyzes the main challenges of schistosomiasis control and proposes the emphasis and interventions for future schistosomiasis control activities in Hunan Province, so as to provide insights into the elimination of schistosomiasis in Hunan Province. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020051DOI Listing

[Implications, spiritual characteristics and practical significance of Chinese schistosomiasis control culture].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(3):222-224

National Institute of Parasitic Diseases, Chinese Center for Diseases Control and Prevention, China.

The culture of schistosomiasis control is specific in the history of Chinese culture. Broadly speaking, the culture of schistosomiasis control is a summary of specific social mood, social consciousness and material culture created by Chinese populations during the progress of schistosomiasis control since the founding of the People's Republic of China. Narrowly speaking, the culture of schistosomiasis control is the spiritual culture that is jointly created and nurtured by schistosomiasis control workers since the founding of the People's Republic of China. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020050DOI Listing

[Moving towards a new era in elimination of schistosomiasis in Dongting Lake regions].

Authors:
X N Zhou

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 May;32(3):219-221

National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention; WHO Collaborating Centre for Tropical Diseases; Chinese Center for Tropical Diseases Research; National Center for International Research on Tropical Diseases, Ministry of Science and Technology; Key Laboratory of Parasite and Vector Biology of National Health Commission, Shanghai 200025, China.

Hunan Province occupies a particular position in the history of the national schistosomiasis control programme of China. The province is hyperendemic for schistosomiasis, and achieves great successes and many experiences at various stages of the national schistosomiasis control programme of China. Recently, remarkable schistosomiasis control benefits have been achieved in Hunan Province because of the strong political will, increased financial support, intensification of the integrated control strategy and sustainable implementation of the four projects, including management of livestock and humans as sources of infections, snail control and capability building of schistosomiasis control institutions. Read More

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http://dx.doi.org/10.16250/j.32.1374.2020137DOI Listing

[Progresses of research on patterns and monitoring approaches of spread].

Authors:
T T Jiang K Yang

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(2):208-212

Key Laboratory of National Health Commission on Parasitic Disease Control and Prevention, Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology, Jiangsu Institute of Parasitic Diseases, Wuxi 214064, China.

snail is the only intermediate host of , and controlling snail breeding and spread is an important intervention for schistosomiasis control. This review summarizes factors affecting snail spread, characteristics of snail spread in various endemic areas, high-risk environments of snail spread and monitoring methods of snail spread, so as to provide insights into the prevention of snail spread. Read More

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http://dx.doi.org/10.16250/j.32.1374.2019124DOI Listing

[Value of discriminant analysis for screening of clonorchiasis sinensis].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Jan;32(2):200-202

Harbin Municipal Center for Disease Control and Prevention, Heilongjiang Province, Harbin 150030, China.

Objective: To build a discriminant function of clonorchiasis sinensis using stepwise discriminant analysis, so as to investigate the feasibility of discriminant analysis for clonorchiasis sinensis screening.

Methods: Ten villages in Mulan County of Harbin City were sampled as the study sites using a cluster random sampling method. The fecal samples were collected from the permanent residents in the study sites and detected for eggs using the modified Kato-Katz smear technique. Read More

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http://dx.doi.org/10.16250/j.32.1374.2019237DOI Listing
January 2020

[Characterization of in domestic ducks in Wuhu City].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(2):191-194

Department of Medical Parasitology, Wannan Medical College, Wuhu 241002, China.

Objective: To investigate the morphological characteristics of in domestic ducks in Wuhu area, and to explore the feasibility of the cytochrome oxidase subunit-1 () gene as a molecular marker for the identification of .

Methods: was isolated from free-ranged domestic ducks in Wuhu area, and the parasites were stained and identified. In addition, the mitochondrial gene of was amplified using a PCR assay, and the amplification product was sequenced and aligned with the GenBank database to yield the homology for the identification of parasite species in combination with morphological findings. Read More

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http://dx.doi.org/10.16250/j.32.1374.2019271DOI Listing

[Molecular identification of spp. and the parasitized trematode cercariae in schistosomiasis-endemic areas of Yunnan Province].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(2):159-167

Yunnan Institute of Endemic Diseases Control and Prevention, Dali 671000, China.

Objective: To characterize a species of the genus and parasitized trematodes in schistosomiasis-endemic areas of Yunnan Province using a molecular analysis, so as to understand their taxonomic positions.

Methods: spp. and snails were collected from Xiangyun County, Yunnan Province, and cercaria parasitizing snails were observed using crushing followed by microscopy. Read More

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http://dx.doi.org/10.16250/j.32.1374.2019187DOI Listing

[Clinical characteristics and distribution of peripheral T lymphocyte subsets in patients with schistosomal hepatic diseases in Suzhou City].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(2):154-158

Department of Infectious Diseases/Intensive Care Unit of Hepatology, The First Hospital Affiliated of Soochow University, Suzhou 215006, China.

Objective: To investigate the clinical characteristics and the distribution of peripheral blood T lymphocyte sub-sets in patients with schistosomal hepatic cirrhosis in Suzhou City.

Methods: A total of 32 inpatients with liver diseases due to advanced schistosomiasis at the Department of Infectious Diseases, The First Affiliated Hospital of Soochow University from January 2016 to January 2018 were recruited and assigned into the infection and non-infection groups according to presence of co-infections, and 20 old healthy volunteers served as controls. Venous blood samples were collected on the day of admission, and the proportions of CD4 T cells, CD8 T cells, regulatory T (Treg) cells and Th17 cells were detected in peripheral blood using flow cytometry. Read More

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http://dx.doi.org/10.16250/j.32.1374.2019196DOI Listing

[Effect of schistosomiasis japonica on the development of gastric and colorectal cancer].

Authors:
Z J Wang J H Yang

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(2):148-153

Yijishan Hospital, The First Affiliated Hospital of Wannan Medical College, Wuhu City, Anhui Province, China.

Objective: To examine the effect of schistosomiasis on the development of gastric cancer and colorectal cancer.

Methods: The clinical data of patients with gastric cancer and colorectal cancer with and without schistosomiasis japonica that were admitted to the Yijishan Hospital Affiliated to Wannan Medical College from January 2014 to December 2018 were collected. All cases were divided into schistosomal gastric cancer group and non - schistosomal gastric cancer group, schistosomal colorectal cancer group and non-schistosomal colorectal cancer group. Read More

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http://dx.doi.org/10.16250/j.32.1374.2019240DOI Listing

[Spatiotemporal distribution of snail habitats in Anhui Province].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Mar;32(2):140-147

National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, China.

Objective: To investigate the spatiotemporal distribution of snails and infected snails in the endemic areas of schistosomiasis in Anhui Province.

Methods: Based on the snail survey data in Anhui Province in 2016, the distribution of snails and infected snails were analyzed, and the spatial distribution of snails and spatial cluster patterns of infected snails were investigated in snail habitats in Anhui Province from 1950 to 2016.

Results: A total of 22 757 snail habitats and 5 004 infected snail habitats were identified in Anhui Province from 1950 to 2016, which appeared single-peak and double-peak patterns, with an inflection point seen in 1970. Read More

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http://dx.doi.org/10.16250/j.32.1374.2019270DOI Listing

[Identification and functional study of the epidermal growth factor receptor gene].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020 Apr;32(2):123-131

State Key Laboratory of Genetic Engineering, Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering,Ministry of Education Key Laboratory of Contemporary Anthropology, School of Life Science, Fudan University, Shanghai 200433, China.

Objective: To characterize the epidermal growth factor receptor () gene in ( gene) and investigate the role of the gene in regulating the growth, reproductive system, maturation and fecundity of .

Methods: Rapid amplification of cDNA ends (RACE) was performed to obtain the full length of the gene, and the gene expression was quantified in different developmental stages of using a quantitative real-time PCR (qPCR) assay. The tissue localization of the gene was detected in 22-day parasite using whole-mount hybridization (WISH). Read More

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http://dx.doi.org/10.16250/j.32.1374.2019300DOI Listing

Lymnaeidae from Santander and bordering departments of Colombia: Morphological characterization, molecular identification and natural infection with Fasciola hepatica.

Vet Parasitol Reg Stud Reports 2020 Apr 8;20:100408. Epub 2020 Apr 8.

USR 3278 CNRS-EPHE-UPVD, CRIOBE, PSL Research University, Perpignan, France.

The Lymnaeidae constitute a family of freshwater gastropod molluscs whose diversity and ecology have been infrequently studied throughout Colombia. Some lymnaeid species act as intermediate hosts of trematode parasites, which are of great importance in both the veterinary and medical fields. Among trematode parasites, Fasciola hepatica is best known for being an important parasite of sheep and cattle for decades and causes significant economic losses in these livestock species. Read More

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http://dx.doi.org/10.1016/j.vprsr.2020.100408DOI Listing

Effects of vertical position on trematode parasitism in larval anurans.

Curr Zool 2019 Dec 8;65(6):657-664. Epub 2019 Feb 8.

Biology Department, Bradley University, Peoria, IL, USA.

Spatial distributions of animals can affect interactions with their natural enemies, such as parasites, and thus have important implications for host-parasite dynamics. While spatial variation in infection risk has been explored in many systems at the landscape scale, less attention has been paid to spatial structure at smaller scales. Here, we explore a hypothesized relationship between a common spatial variable, vertical position, and risk of parasite infection in a model aquatic system, larval frogs () and trematode (Digenea) parasites. Read More

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http://dx.doi.org/10.1093/cz/zoz004DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7233612PMC
December 2019

Brain-encysting trematodes () decrease raphe serotonergic activity in California killifish ().

Biol Open 2020 May 21. Epub 2020 May 21.

Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway 1407, Norway

Modulation of brain serotonin (5-HT) signalling is associated with parasite-induced changes in host behaviour, potentially increasing parasite transmission to predatory final hosts. Such alterations could have substantial impact on host physiology and behaviour, as 5-HT serves multiple roles in neuroendocrine regulation. These effects however remain insufficiently understood, as parasites have been associated with both increased and decreased serotonergic activity. Read More

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http://dx.doi.org/10.1242/bio.049551DOI Listing

Founder effects and species introductions: A host versus parasite perspective.

Evol Appl 2020 Mar 26;13(3):559-574. Epub 2019 Sep 26.

Smithsonian Environmental Research Center Edgewater MD USA.

Species colonizations (both natural and anthropogenic) can be associated with genetic founder effects, where founding populations demonstrate significant genetic bottlenecks compared to native populations. Yet, many successfully established free-living species exhibit little reduction in genetic diversity-possibly due to multiple founding events and/or high propagule pressure during introductions. Less clear, however, is whether parasites may show differential signatures to their free-living  hosts. Read More

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http://dx.doi.org/10.1111/eva.12868DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7045715PMC

Diseases and parasites of wild and cultivated mussels along the Patagonian coast of Argentina, southwest Atlantic Ocean.

Dis Aquat Organ 2020 May 14;139:139-152. Epub 2020 May 14.

Laboratorio de Parasitología (LAPA), Instituto de Biología de Organismos Marinos (IBIOMAR) (CCT CONICET - CENPAT), U9120ACF Puerto Madryn, Argentina.

A histological survey of the commercially edible mussels Mytilus platensis and M. chilensis from wild and cultivated populations along the coast of Patagonia, Argentina (42°00' to 54°47'S), was carried out to determine their health status. Diagnostic results included 3 types of inflammatory responses (infiltrative, nodular, and encapsulation), disseminated neoplasia disease, 2 abnormal reproductive conditions (gonadal atresia and intersex), prokaryotic inclusions, protozoans, and metazoans. Read More

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http://dx.doi.org/10.3354/dao03467DOI Listing

Computational prediction and characterisation of miRNAs and their pathway genes in human schistosomiasis caused by Schistosoma haematobium.

Mem Inst Oswaldo Cruz 2020 8;115:e190378. Epub 2020 May 8.

Laboratório de Bioinformática e Análises Moleculares, Universidade Federal de Uberlândia, Patos de Minas, MG, Brazil.

BACKGROUND Key genes control the infectivity of the Schistosoma haematobium causing schistosomiasis. A method for understanding the regulation of these genes might help in developing new disease strategies to control schistosomiasis, such as the silencing mediated by microRNAs (miRNAs). The miRNAs have been studied in schistosome species and they play important roles in the post-transcriptional regulation of genes, and in parasite-host interactions. Read More

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http://dx.doi.org/10.1590/0074-02760190378DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7207159PMC

Schistosoma mansoni granulomas in the skeletal striated muscles in the murine model of neuroschistosomiasis: histological findings.

Mem Inst Oswaldo Cruz 2020 11;115:e190383. Epub 2020 May 11.

Departamento de Doenças Infectoparasitárias/Departamento de Anatomia Patológica e Medicina Legal, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.

Schistosomiasis mansoni presents many clinical manifestations during migration of schistosomes in their hosts, including diarrhea, hepatomegaly, splenomegaly, liver abscesses, skinlesions, brain tumors and myeloradiculopathy. No lesions have been reported in skeletal striated muscles due to schistosomiasis mansoni in the literature. This short communication reports the histopathological findings on skeletal musculature in a murine model of neuroeschistosomiasis mansoni. Read More

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http://dx.doi.org/10.1590/0074-02760190383DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7212994PMC

Influence of Water Irrigation Schemes and Seasonality on Transmission Dynamics of in the Snail Intermediate Host, in Rice Paddy Fields in Northeast Thailand.

Am J Trop Med Hyg 2020 May 11. Epub 2020 May 11.

State Museum of Natural History Karlsruhe, Evolution and Paleontology, Karlsruhe, Germany.

is a fish-borne zoonotic trematode that causes significant public health problems in Southeast Asia. Its life cycle requires snails as the first intermediate hosts, fish, and human and/or carnivore hosts. This study assessed impacts of land use practice for rice cultivation and seasonality on the transmission dynamics of in in rice paddy field habitats. Read More

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http://dx.doi.org/10.4269/ajtmh.19-0290DOI Listing

Effects of road salt on a free-living trematode infectious stage.

J Helminthol 2020 May 8;94:e150. Epub 2020 May 8.

Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, ON, M5B 2K3, Canada.

Many temperate freshwater habitats are at risk for contamination by run-off associated with the application of road de-icing salts. Elevated salinity can have various detrimental effects on freshwater organisms, including greater susceptibility to infection by parasites and pathogens. However, to better understand the net effects of road salt exposure on host-parasite dynamics, it is necessary to consider the impacts on free-living parasite infectious stages, such as the motile aquatic cercariae of trematodes. Read More

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http://dx.doi.org/10.1017/S0022149X20000309DOI Listing

Alien parasites on an alien fish species: monogeneans from the black bullhead Ameiurus melas (Siluriformes) in the Lake Srebarna Biosphere Reserve, Bulgaria, with the first record of Gyrodactylus nebulosus in the Palaearctic.

Parasitol Res 2020 Jul 7;119(7):2105-2112. Epub 2020 May 7.

Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Street, 1113, Sofia, Bulgaria.

Black bullhead Ameiurus melas (Actinopterygii: Siluriformes) is an alien fish species of North American origin, which has expanded its invasive geographical range in Europe. In 2017-2019, 32 black bullhead specimens from the Lake Srebarna Biosphere Reserve, Bulgaria, were examined for monogenean parasites. Two species of monogeneans were recorded and identified on the basis of morphological and molecular data: Ligictaluridus pricei (Ancyrocephalidae), with prevalence 100% and intensity 2-32 (mean 13. Read More

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http://dx.doi.org/10.1007/s00436-020-06699-zDOI Listing

Hiding in the Water.

N Engl J Med 2020 May;382(19):1844-1849

From the Department of Internal Medicine, Sections of Gastroenterology, Hepatology, and Nutrition (D.M., M.R.C.) and Infectious Diseases (J.-L.B.), and the Department of Radiology (A.O.), University of Chicago Medicine, and the Department of Internal Medicine, University of Chicago Medicine, and the MacLean Center for Clinical Medical Ethics, University of Chicago (M.S.) - all in Chicago.

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http://dx.doi.org/10.1056/NEJMcps1902741DOI Listing

Amino acids serve as an important energy source for adult flukes of Clonorchis sinensis.

PLoS Negl Trop Dis 2020 04 30;14(4):e0008287. Epub 2020 Apr 30.

Department of Parasitology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China.

Clonorchiasis, caused by chronic infection with Clonorchis sinensis (C. sinensis), is an important food-borne parasitic disease that seriously afflicts more than 35 million people globally, resulting in a socioeconomic burden in endemic regions. C. Read More

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http://dx.doi.org/10.1371/journal.pntd.0008287DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7217481PMC

Familial assimilation in transmission of raw-freshwater fish-eating practice leading to clonorchiasis.

PLoS Negl Trop Dis 2020 04 30;14(4):e0008263. Epub 2020 Apr 30.

National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, China.

Clonorchiasis is caused by raw-freshwater fish-eating practice and causes high burden in Asia. Transmission mechanism of this behavior hasn't been illuminated, which hinders the adoption of sustainable control activities. A cross-sectional survey was implemented in students from four endemic provinces in China. Read More

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http://dx.doi.org/10.1371/journal.pntd.0008263DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7233597PMC

Horses are susceptible to natural, but resistant to experimental, infection with the liver fluke, Fasciola hepatica.

Vet Parasitol 2020 May 2;281:109094. Epub 2020 Apr 2.

UCD School of Veterinary Medicine, Dublin, Ireland. Electronic address:

Fasciola hepatica is a common parasite of livestock in Ireland, causing significant economic losses and affecting animal welfare. A previous abattoir study of 200 horses led to an estimated 9.5 % prevalence of infection in horses slaughtered in Ireland. Read More

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http://dx.doi.org/10.1016/j.vetpar.2020.109094DOI Listing

Assessing expanded community wide treatment for schistosomiasis: Baseline infection status and self-reported risk factors in three communities from the Greater Accra region, Ghana.

PLoS Negl Trop Dis 2020 04 27;14(4):e0007973. Epub 2020 Apr 27.

Department of Biomedical and Public Health Research, Council for Scientific and Industrial Research-Water Research Institute, Council Close, Accra, Ghana.

Background: This paper reports on the baseline prevalence and associated risk factor findings of a pilot, longitudinal study exploring community-wide treatment of schistosomiasis and soil-transmitted helminthiasis, using albendazole plus praziquantel in the Greater Accra region of Ghana.

Method: From three communities, at least, 658 individuals were enrolled into the study via random household selection. Prevalence and intensity of schistosomiasis and STH infection were determined from stool and urine samples with a questionnaire being administered in order to explore other morbidities and risk factors. Read More

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http://dx.doi.org/10.1371/journal.pntd.0007973DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7205311PMC

Detecting Schistosoma mansoni infections among pre-school-aged children in southern Ghana: a diagnostic comparison of urine-CCA, real-time PCR and Kato-Katz assays.

BMC Infect Dis 2020 Apr 22;20(1):301. Epub 2020 Apr 22.

Department of Parasitology, Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK.

Background: In Ghana, pre-school-aged children (PSAC) are at risk of intestinal schistosomiasis and are living in need of praziquantel treatment. To better assess the infection burden within this vulnerable demographic group, we have provided a comparative assessment of the prevalence of Schistosoma mansoni in pre-school-aged children by urine circulating cathodic antigen (CCA) dipsticks, real-time PCR Taqman® faecal assays and Kato-Katz coproscopy.

Methods: In all, 190 pre-school-aged children were sampled from three endemic communities (viz. Read More

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http://dx.doi.org/10.1186/s12879-020-05034-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7178570PMC