37,489 results match your criteria Trematode Infection


First record of chronic infection in roe deer ().

Int J Parasitol Parasites Wildl 2021 Aug 26;15:173-176. Epub 2021 May 26.

The Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10000, Zagreb, Croatia.

Fascioloidosis is an allochthonous parasitic disease in Europe caused by the digenean trematode . The final hosts of in Europe are defined as definitive, aberrant and dead-end. Roe deer are aberrant hosts in which juvenile flukes permanently migrate through the liver parenchyma. Read More

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n. g., n. sp., a new monorchiid trematode from the eastern Australian coast and its life cycle partially elucidated.

J Helminthol 2021 Jun 8;95:e30. Epub 2021 Jun 8.

School of Biological Sciences, The University of Queensland, St Lucia, Brisbane, QLD4072, Australia.

Of over 250 species of Monorchiidae Odhner, 1911, just four are known from gerreid fishes. Here, we report adult specimens of a new species infecting Gerres oyena (Forsskål) and Gerres subfasciatus Cuvier from off Heron Island and North Stradbroke Island, Queensland, Australia. The species is morphologically most similar to the concept of Lasiotocus Looss, 1907, which currently comprises eight species, in the possession of an unspined genital atrium, bipartite terminal organ, round oral sucker and unlobed ovary. Read More

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A case of hepatic paragonimiasis was misdiagnosed as hepatocellular carcinoma with rupture and haemorrhage.

J Int Med Res 2021 Jun;49(6):3000605211012668

Department of Hepatobiliary Surgery, Kunming Medical University, The Second Affiliated Hospital of Kunming Medical College, Kunming, Yunnan Province, China.

Paragonimiasis is a disease caused by parasitic infections that mainly involve the lungs. However, it can also produce ectopic infections, such as when the parasites invade the liver, brain and subcutaneous tissue, which then cause different symptoms. This current case report describes a 55-year-old male patient with hepatic paragonimiasis that was misdiagnosed as liver cancer with rupture and haemorrhage. Read More

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Phylogenetic position of Tremiorchis ranarum Mehra and Negi, 1926 (Trematoda: Plagiorchiidae) with remark on this monotypic genus.

Parasitol Int 2021 Jun 1:102398. Epub 2021 Jun 1.

Molecular Taxonomy Laboratory, Department of Zoology, Chaudhary Charan Singh University, Meerut, U.P. 250004, India.

Tremiorchis is a monotypic genus of digenetic trematode (Plagiorchiidae: Plagiorchiinae), infecting the frogs Rana tigrina (Hoplobatrachus tigerinus) and R. cyanophlyctis (Euphlyctis cyanophlyctis). Metacercaria use to infect Rana tigrina (Hoplobatrachus tigerinus) and R. Read More

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Parasitic fauna of Eurasian beavers (Castor fiber) in Sweden (1997-1998).

Acta Vet Scand 2021 Jun 2;63(1):23. Epub 2021 Jun 2.

Department of Anatomy, Physiology and Biochemistry, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, PO. Box 7011, 750 07, Uppsala, Sweden.

Background: The parasitic fauna of beavers (Castor fiber and C. canadensis) has been well studied in many parts of their respective areas of distribution. In Scandinavia there have, however, been limited investigations conducted on the parasites of beavers in recent times. Read More

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Platynosomum illiciens (Trematoda: Dicrocoeliidae) in a hybrid marmoset (Callithrix sp.) in the Municipality of Seropédica, RJ, Brazil - Case report.

Rev Bras Parasitol Vet 2021 28;30(2):e026020. Epub 2021 May 28.

Laboratório de Quimioterapia Experimental em Parasitologia Veterinária, Departamento de Parasitologia Animal, Instituto de Veterinária - IV, Universidade Federal Rural do Rio de Janeiro - UFRRJ, Seropédica, Campus Seropédica, RJ, Brasil.

Platynosomum illiciens is a liver trematode encountered infecting mainly felids although it has also been reported in birds and in additional mammalian species, including non-human primates. The current study reports a natural P. illiciens infection primate of the genus Callithrix. Read More

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One Health initiative in the Bolivian Altiplano human fascioliasis hyperendemic area: Lymnaeid biology, population dynamics, microecology and climatic factor influences.

Rev Bras Parasitol Vet 2021 28;30(2):e025620. Epub 2021 May 28.

Departamento de Parasitologia, Facultad de Farmacia, Universidad de Valencia, Valencia, Spain.

Fascioliasis is a freshwater snail-borne zoonotic disease. The Northern Bolivian Altiplano is a very high altitude endemic area where the highest human prevalences and intensities have been reported. Preventive chemotherapy by treatment campaigns is yearly applied. Read More

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Molecular confirmation of Fasciola hepatica infection in capybaras (Hydrochoerus hydrochaeris) from the state of Espírito Santo, Brazil.

Rev Bras Parasitol Vet 2021 28;30(2):e000221. Epub 2021 May 28.

Department of Veterinary Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA.

Sixty-two fecal samples of capybara (Hydrochoerus hydrochaeris) living in eight conservation units (CUs) across the state of Espírito Santo, southeastern Brazil, were assessed for the presence of eggs of liver flukes via sedimentation. Fasciola hepatica eggs were found in 37.1% (23/62) of the samples. Read More

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Diversity of non-marine gastropods of the Fiocruz Atlantic Forest Biological Station and adjacents urban areas, Rio de Janeiro, RJ, Brasil.

An Acad Bras Cienc 2021 31;93(2):e20190691. Epub 2021 May 31.

Instituto Oswaldo Cruz, Pavilhão Adolfo Lutz, Laboratório de Referência Nacional para Esquistossomose - Malacologia, Fundação Oswaldo Cruz, Avenida Brasil, 4365, Manguinhos, 21040-360 Rio de Janeiro, RJ, Brazil.

Our main objective was to perform a preliminary survey of the non-marine gastropods at the Estação Biológica Fiocruz Mata Atlântica (EFMA) and its adjacent urban areas, also considering samples from other localities of the Parque Estadual da Pedra Branca received as donation, in Rio de Janeiro, RJ, Brazil. Infection by larval helminths of medical and veterinary importance was also investigated in 348 specimens of five freshwater species and two specimens of the terrestrial species Achatina fulica. In all, 584 samples of molluscs from 34 collection sites were obtained. Read More

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Experimental Infection of the Vector Snail by Parasites Drives Snail Microbiota Dysbiosis.

Microorganisms 2021 May 18;9(5). Epub 2021 May 18.

IHPE, University Montpellier, CNRS, Ifremer, University Perpignan Via Domitia, 66860 Perpignan, France.

Host-parasite interaction can result in a strong alteration of the host-associated microbiota. This dysbiosis can affect the fitness of the host; can modify pathogen interaction and the outcome of diseases. is the snail intermediate host of the trematode , the agent of human schistosomiasis, causing hundreds of thousands of deaths every year. Read More

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Stages of Granulomatous Response Against Histozoic Metazoan Parasites in Mullets (Osteichthyes: Mugilidae).

Animals (Basel) 2021 May 21;11(6). Epub 2021 May 21.

Department of Veterinary Medicine, University of Sassari, 07100 Sassari, Italy.

Histozoic parasite-fish host interaction is a dynamic process that leads to the formation of a granuloma, a specific chronic inflammatory response with discernible histological features. Mullets (Osteichthyes: Mugilidae) represent a suitable model concerning the development of such lesions in the host-parasite interface. The present work aimed to identify granuloma developmental stages from the early to the late phase of the infection and to characterize the immune cells and non-inflammatory components of the granuloma in different stages. Read More

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Primary health care facilities capacity gaps regarding diagnosis, treatment and knowledge of schistosomiasis among healthcare workers in North-western Tanzania: a call to strengthen the horizontal system.

BMC Health Serv Res 2021 May 30;21(1):529. Epub 2021 May 30.

National Neglected Tropical Diseases Control Programme, National Institute for Medical Research, 3 Barack Obama Drive, P.O. Box 9653, 11101, Dar-Es-Salaam, Tanzania.

Background: The World Health Organization (WHO) calls for schistosomiasis endemic countries to integrate schistosomiasis control measures into the primary health care (PHC) services; however, in Tanzania, little is known about the capacity of the primary health care system to assume this role. The objective of this study was to assess the capacity of the primary health care system to diagnose and treat schistosomiasis in endemic regions of north-western Tanzania.

Methods: A total of 80 randomly-selected primary health care facilities located in the Uyui, Geita and Ukerewe districts of North-western Tanzania participated in the study. Read More

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Constraints of using historical data for modelling the spatial distribution of helminth parasites in ruminants.

Parasite 2021 27;28:46. Epub 2021 May 27.

Department of Research and Development, Avia-GIS NV, 2980 Zoersel, Belgium.

Dicrocoelium dendriticum is a trematode that infects ruminant livestock and requires two different intermediate hosts to complete its lifecycle. Modelling the spatial distribution of this parasite can help to improve its management in higher risk regions. The aim of this research was to assess the constraints of using historical data sets when modelling the spatial distribution of helminth parasites in ruminants. Read More

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Host exposure history and priority effects impact the development and reproduction of a dominant parasite.

Int J Parasitol 2021 May 25. Epub 2021 May 25.

Department of Biological Sciences, Purdue University, 915 West State Street, West Lafayette, IN 47907, USA.

Within a single organism, numerous parasites often compete for space and resources. This competition, together with a parasite's ability to locate and successfully establish in a host, can contribute to the distribution and prevalence of parasites. Coinfection with trematodes in snail intermediate hosts is rarely observed in nature, partly due to varying competitive abilities among parasite taxa. Read More

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FMRF-NH -related neuropeptides in Biomphalaria spp., intermediate hosts for schistosomiasis: Precursor organization and immunohistochemical localization.

J Comp Neurol 2021 May 26. Epub 2021 May 26.

Institute of Neurobiology and Department of Anatomy and Neurobiology, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico.

Freshwater snails of the genus Biomphalaria serve as intermediate hosts for the digenetic trematode Schistosoma mansoni, the etiological agent for the most widespread form of intestinal schistosomiasis. As neuropeptide signaling in host snails can be altered by trematode infection, a neural transcriptomics approach was undertaken to identify peptide precursors in Biomphalaria glabrata, the major intermediate host for S. mansoni in the Western Hemisphere. Read More

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Economic evaluations addressing diagnosis and treatment strategies for neglected tropical diseases: an overview.

Rev Inst Med Trop Sao Paulo 2021 24;63:e41. Epub 2021 May 24.

Fundação Oswaldo Cruz, Instituto René Rachou, Pesquisa Clínica e Políticas Públicas em Doenças Infecciosas e Parasitárias, Belo Horizonte, Minas Gerais, Brazil.

Neglected tropical diseases (NTDs) are those affecting vulnerable people and causing additional social and economic burden. The aim of this study was to carry out a general overview of the health economic assessments involving the diagnosis and treatment of six NTDs: cutaneous leishmaniasis (CL), Chagas disease, cysticercosis, filariasis, schistosomiasis and visceral leishmaniasis (VL). The literature search was based on two of the main medical literature databases (Medline and SciELO) and identified 46 studies. Read More

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Description of Lutziella swatensis sp.n. (Trematoda: Dicrocoelidae) from Rattus rattus in Swat, Pakistan.

Braz J Biol 2021 21;82:e225092. Epub 2021 May 21.

Hazara University Mansehra, Department of Zoology, Mansehra, Pakistan.

A new species of the genus Lutziella (Rohde, 1966) Yamaguti, 1971 is described here and named Lutziella swatensis sp.nov. from the liver of rat (Rattus rattus L. Read More

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Confounding influences of malnutrition and Plasmodium falciparum and Schistosoma haematobium infections on haematological parameters in school children in Muyuka, Cameroon.

BMC Infect Dis 2021 May 25;21(1):477. Epub 2021 May 25.

Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.

Background: School-aged children (SAC) are a high-risk demographic group for infectious diseases and malnutrition. The objective of this study was to assess the burden and the effect of Plasmodium falciparum and Schistosoma haematobium infections on the haematological indices in SAC and the confounding influence of malnutrition on the outcomes.

Methods: This cross-sectional study was conducted in SAC 4-14 years old living in Ikata, Bafia and Mile 14-Likoko in Muyuka, Cameroon. Read More

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Risk Factors for Infection in Residents of Binyang, Guangxi: A Cross-Sectional and Logistic Analysis Study.

Front Public Health 2021 5;9:588325. Epub 2021 May 5.

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

Clonorchiasis is a serious food-borne parasitic disease caused by infection. , a major fish-borne trematode, is a known causative agent of cholangiocarcinoma. The risk factors for infection include individual eating behaviors and environmental factors. Read More

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Autonomous Non Antioxidant Roles for Secreted Thioredoxin-1 and Peroxiredoxin-1.

Front Cell Infect Microbiol 2021 5;11:667272. Epub 2021 May 5.

Molecular Parasitology Laboratory, Centre of One Health (COH), Ryan Institute, National University of Ireland, Galway, Ireland.

Trematode parasites of the genus are the cause of liver fluke disease (fasciolosis) in humans and their livestock. Infection of the host involves invasion through the intestinal wall followed by migration in the liver that results in extensive damage, before the parasite settles as a mature egg-laying adult in the bile ducts. Genomic and transcriptomic studies revealed that increased metabolic stress during the rapid growth and development of is balanced with the up-regulation of the thiol-independent antioxidant system. Read More

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Platynosomum fastosum in domestic cats in Cuiabá, Midwest region of Brazil.

Vet Parasitol Reg Stud Reports 2021 Apr 5;24:100582. Epub 2021 May 5.

Setor de Clínica Médica de Pequenos Animais do Hospital Veterinário da Faculdade de Medicina Veterinária, Universidade Federal de Mato Grosso, Avenida Fernando Corrêa da Costa, n°2367, CEP 78060-900 Cuiabá, Mato Grosso, Brazil. Electronic address:

Platynosomum fastosum, which is distributed in tropical and subtropical regions, is the main parasite in the biliary system of domestic cats. Cats can be asymptomatic or show severe signs of cholangitis. Although the infection is reported throughout Brazil, only post-mortem studies are available from the Midwest region of the country. Read More

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Surgical management outcome of cerebral schistosomiasis: a case report and review of the literature.

J Med Case Rep 2021 May 23;15(1):268. Epub 2021 May 23.

Queens Medical Centre, Nottingham University Hospitals, Nottingham, UK.

Background: Schistosomiasis is a parasitic infection that commonly affects the gastrointestinal and genitourinary tracts. Cerebral schistosomiasis is rare, and few operative cases have been reported in the literature. Diagnosis is usually challenging due to the similarity of the lesion to many other brain conditions. Read More

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Genetic characterization and phylogenetic analysis of Fasciola species based on ITS2 gene sequence, with first molecular evidence of intermediate Fasciola from water buffaloes in Aswan, Egypt.

Ann Parasitol 2021 ;67(1):55-65

Department of Parasitology, Faculty of Veterinary Medicine, South Valley University, 83523 Qena, Egypt.

Fasciolosis is an important food and water-borne parasitic infection caused by the two trematode species, Fasciola hepatica, and F. gigantica. The present study aimed to identify the phenotypic features and genetic characterization of adult fasciolid that infecting buffaloes were studied in Aswan, Egypt. Read More

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[Survey of in national schistosomiasis surveillance sites of Guangxi Zhuang Autonomous Region from 2015 to 2019].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021 Mar;33(2):205-208

Guangxi Zhuang Autonomous Region Center for Disease Control and Prevention, Nanning 530028, China.

Objective: To investigate the distribution characteristics of in Guangxi Zhuang Autonomous Region, so as to provide insights into the assessment of the risk of schistosomiasis transmission and the scientific formulation of the schistosomiasis surveillance strategy.

Methods: From 2015 to 2019, a total of 19 national schistosomiasis surveillance sites were assigned in Guangxi Zhuang Autonomous Region, including 4 fixed sites and 15 mobile sites. Snail survey was performed by means of systematic sampling in combination with environmental sampling, and the infection of was detected by the crushing method combined with loop-mediated isothermal amplification (LAMP) assay. Read More

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[Longitudinal surveillance of schistosomiasis in hilly regions of Sichuan Province from 2015 to 2019].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021 Jan;33(2):200-204

Institute of Parasitic Diseases, Sichuan Provincial Center for Disease Control and Prevention, Chengdu 610041, China.

Objective: To investigate the changes in the endemic situation of schistosomiasis in national surveillance sites of Sichuan Province, so as to provide the scientific evidence for formulating the schistosomiasis elimination strategy.

Methods: From 2015 to 2019, 63 national schistosomiasis surveillance sites were assigned in Sichuan Province, in which infections were monitored in humans, livestock, wild feces and snails. The monitoring data were descriptively analyzed. Read More

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January 2021

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

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021 Apr;33(2):195-199

Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China.

Objective: To analyze the endemic situation of schistosomiasis in national surveillance sites of Zhejiang Province, so as to provide the scientific evidence for formulating the new schistosomiasis surveillance program and consolidating schistosomiasis elimination achievements.

Methods: A total of 54 to 55 national surveillance sites and 6 risk monitoring sites were assigned in historical endemic regions of Zhejiang Province from 2015 to 2019, where the infections in humans, livestock, snails and wild feces were monitored. All data pertaining to the surveillance results were descriptively analyzed. Read More

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[Performance of a recombinase - aided amplification assay for detection of infections in ].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021 Apr;33(2):185-188

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

Objective: To evaluate the efficiency of a recombinase-aided amplification (RAA) assay for the detection of infections in snails.

Methods: A group test was employed. Fifty snails were collected as a detection sample. Read More

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[Assessment of the burden of clonorchiasis and its temporal changes in China].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021 Apr;33(2):162-168

School of Public Health, Sun Yat-sen University, Guangzhou 51000, China.

Objective: To assess the burden of clonorchiasis and identify its temporal and spatial changes in China, thus to provide insights into the control and prevention of the diseases.

Methods: The disability-adjusted life years (DALYs) was employed as the primary indicator for the disease burden. The prevalence data of infection were obtainted from the three national surveys on important human parasitic diseases in China, conducting during the period from 1988 to 1922, from 2001 to 2004 and from 2014 to 2016, respectively, and the demographic data from National Bureau of Statistics of China. Read More

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[Expression and clinicopathological significance of and genes in colorectal cancer patients complicated with schistosomiasis].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021 Apr;33(2):148-153

The Second Department of General Surgery, the First Affiliated Hospital of Dali University, Dali 671000, China.

Objective: To investigate the expression and clinicopathological significance of and genes in colorectal cancer (CRC) patients complicated with schistosomiasis.

Methods: The CRC patients receiving surgical treatment in the First Affiliated Hospital of Dali University from June 2016 to June 2020 were recruited as the study subjects, and 30 subjects were randomly sampled from the CRC patients complicated with schistosomiasis (CRC-S group) and 30 subjects were randomly sampled from the CRC patients without schistosomiasis (CRC group) using a random number table method. The cancer specimens were sampled from subjects in the CRC-S and CRC groups, and the peri-cancer specimens were sampled from subjects in the CRC group. Read More

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[Conversion of serum anti- antibodies detected by immunological tests following treatment with praziquantel: a meta-analysis].

Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021 Apr;33(2):138-147

National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research); NHC Key Laboratory of Parasite and Vector Biology; WHO Collaborating Centre for Tropical Diseases; National Center for International Research on Tropical Diseases, Shanghai 200025, China.

Objective: To evaluate the conversion of serum antibodies against in humans and livestock detected by immunological tests following treatment with praziquantel.

Methods: The studies pertaining to serological tests of schistosomiasis japonica published from 1991 to 2020 were retrieved in electronic databases, including Chinese National Knowledge Infrastructure, WanFang Data, PubMed and ScienceDirect. Data were extracted from included studies. Read More

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