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zoonotic parasitosis

Carlos Graeff-Teixeira, Alessandra Loureiro Morassutti, Malcolm K Jones
Eosinophilic meningitis caused by Angiostrongylus cantonensis is spreading worldwide, and it can manifest as a severe neurological disease. Angiostrongyliasis is a food- and water-borne parasitosis that usually exhibits a seasonal and circumscribed geographical distribution. To improve control and treatment of these infections, further studies of transmission dynamics under natural conditions and the development of better diagnostic tools and treatment options are needed.
February 7, 2018: ACS Chemical Neuroscience
P Cociancic, M L Zonta, G T Navone
A cross-sectional study was performed between school term dates 2014 and 2015 to diagnose intestinal parasites in dogs and children living with them. The socio-environmental characteristics and hygiene practices of the children were also evaluated in terms of risk factors for parasitic infection of periurban neighbourhoods of La Plata (Buenos Aires, Argentina). Serial coproparasitological samples of 78 dogs and 211 children were analysed by means of concentration and flotation techniques. Socio-environmental variables and hygiene practices of children were evaluated through semi-structured questionnaires which were answered by every family...
October 5, 2017: Zoonoses and Public Health
Mircea IonuŢ GheorghiŢă, Mircea Cătălin ForŢofoiu, Cristiana Iulia Dumitrescu, Daniela Dumitrescu, Adrian Camen, Claudiu Mărgăritescu
Dirofilariasis is a zoonotic worldwide-distributed disease, especially in regions with warm to temperate climate, where it recently recorded a significant increase of prevalence. A 61-year-old female, a dog owner, residing in the Southwest of Romania, near a swamp, developed a painless nodule in the left temporal region. The contrast-enhanced computed tomography (CT) scan revealed a temporal intramuscular cystic lesion. The surgical exploration confirmed the lesion as with intramuscular localization. The histopathology and biochemistry investigations established as a cause of the lesion an infestation with Dirofilaria repens species...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
Camila Henriques Coelho, Ana Carolina Carvalho Silva, Adriana Oliveira Costa, Ana Paula Fernandes
Giardiasis is an intestinal parasitosis that affects millions of people worldwide and is considered a zoonotic disease. Frequently in contact with humans, dogs are the main host involved in this zoonotic transmission. Here, we compared some aspects of Giardia duodenalis biology between two strains: a recently isolated dog strain (BHFC1) and a human reference strain (Portland-1). Growth curve analysis revealed that BHFC1 trophozoites multiply faster than the human isolate Portland-1 in axenic culture, but has a lower rate of cysts formation...
October 2017: Acta Tropica
E Papadopoulos, A Komnenou, A Thomas, E Ioannidou, V Colella, D Otranto
Thelazia callipaeda (Spirurida, Thelaziidae), the so-called oriental eyeworm, has been increasingly reported as an agent of infection in animals and humans from many European countries. Clinical signs range from subclinical to moderate or severe ocular disorders (e.g., epiphora, photophobia, conjunctivitis, keratitis, ulcers). The disease has been also diagnosed in animals from countries of the Balkan area (e.g., Croatia, Bosnia and Herzegovina and Serbia), but only a single case of canine thelaziosis, presumably autochthonous, was reported in Northern Greece...
February 26, 2017: Transboundary and Emerging Diseases
Miao-Miao Sun, Guo-Hua Liu, Katsuhiko Ando, Ho-Choon Woo, Jun Ma, Woon-Mok Sohn, Hiromu Sugiyama, Xing-Quan Zhu
Gnathostomiasis is a foodborne zoonotic parasitosis caused by Gnathostoma nematodes. It has caused significant public problems worldwide, but its molecular biology is limited. The purpose of this study was to decode the complete mitochondrial (mt) genomes of Gnathostoma nipponicum and Gnathostoma sp., and compare their mt sequences with other Gnathostoma species. The complete mt genome sequences were amplified by long-range PCR and determined by subsequent primer walking. The complete mt genomes of G. nipponicum and Gnathostoma sp...
March 2017: Infection, Genetics and Evolution
Concetta Maria Messina, Federica Pizzo, Andrea Santulli, Ivana Bušelić, Mate Boban, Stjepan Orhanović, Ivona Mladineo
BACKGROUND: In countries with elevated prevalence of zoonotic anisakiasis and high awareness of this parasitosis, a considerable number of cases that associate Anisakis sp. (Nematoda, Anisakidae) and different bowel carcinomas have been described. Although neoplasia and embedded larvae were observed sharing the common site affected by chronic inflammation, no association between the nematode and malignancy were directly proved. Similarly, no data are available about the effect of secretory and excretory products of infecting larvae at the host's cellular level, except in respect to allergenic interaction...
November 25, 2016: Parasites & Vectors
Alynne da Silva Barbosa, Otilio Machado Pereira Bastos, Claudia Maria Antunes Uchôa, Alcides Pissinatti, Augusto César Machado Pereira Bastos, Igo Vieira de Souza, Laís Verdan Dib, Eduarda Peixoto Azevedo, Mayara Perlingeiro de Siqueira, Matheus Lessa Cardozo, Maria Regina Reis Amendoeira
Balantidium coli is a protozoon that can cause dysentery in humans, pigs and nonhuman primates, with zoonotic potential. In the literature, there is still little information on the effectiveness of different laboratory techniques for diagnosing this disease. This study compared and evaluated the performance of the Lutz, modified Ritchie, Faust, modified Sheather and direct examination techniques for detecting cysts of this protozoon. Between 2012 and 2014, 1905 fecal samples were collected from captive animals in the state of Rio de Janeiro...
July 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
Natalie E Nieuwenhuizen
Anisakis species are marine nematodes which can cause zoonotic infection in humans if consumed in raw, pickled or undercooked fish and seafood. Infection with Anisakis is associated with abdominal pain, nausea and diarrhoea and can lead to massive infiltration of eosinophils and formation of granulomas in the gastrointestinal tract if the larvae are not removed. Re-infection leads to systemic allergic reactions such as urticarial or anaphylaxis in some individuals, making Anisakis an important source of hidden allergens in seafood...
September 2016: Parasite Immunology
Donato Antonio Raele, Nicola Pugliese, Domenico Galante, Laura Maria Latorre, Maria Assunta Cafiero
Dirofilariasis by Dirofilaria repens is an important mosquito vector borne parasitosis, and the dog represents the natural host and reservoir of the parasite. This filarial nematode can also induce disease in humans, and in the last decades an increasing number of cases have been being reported. The present study describes the first loop mediated isothermal amplification (LAMP) assay to detect D. repens DNA in blood and mosquitoes. Two versions of the technique have been developed and described: in the first, the amplification is followed point by point through a real time PCR instrument (ReT-LAMP); in the second, the amplification is visualized by checking UV fluorescence of the reaction mixture after addition of propidium iodide (PI-LAMP)...
June 2016: PLoS Neglected Tropical Diseases
Andreas Neumayr, Jose Ollague, Francisco Bravo, Eduardo Gotuzzo, Pedro Jimenez, Scott A Norton, Pham Ngoc Doanh, Yukifumi Nawa, Yoichiro Horii, Beatrice Nickel, Hanspeter Marti
Gnathostomiasis is a zoonotic parasitosis endemic in many Asian and some Latin American countries. Most human infections are caused by Gnathostoma spinigerum in Asia and Gnathostoma binucleatum in the Americas, and recently, imported cases have been increasing among travelers returning from endemic regions. Confirmation of the clinical diagnosis relies largely on serologic tests, with a G. spinigerum-antigen-based immunoblot currently being the diagnostic method of choice. However, we repeatedly experienced that sera from patients with clinically suspected American gnathostomiasis gave negative results in this assay...
August 3, 2016: American Journal of Tropical Medicine and Hygiene
Fen Wang, Bin Ye
Cyst echinococcosis caused by the matacestodal larvae of Echinococcus granulosus (Eg), is a chronic, worldwide, and severe zoonotic parasitosis. The treatment of cyst echinococcosis is still difficult since surgery cannot fit the needs of all patients, and drugs can lead to serious adverse events as well as resistance. The screen of target proteins interacted with new anti-hydatidosis drugs is urgently needed to meet the prevailing challenges. Here, we analyzed the sequences and structure properties, and constructed a phylogenetic tree by bioinformatics methods...
September 2016: Parasitology Research
Shi-ping Wang, Xin He, Yun-fei Zhou
Schistosomiasis is a type of zoonotic parasitosis that severely impairs human health. Rapid detection of infection sources is a key to the control of schistosomiasis. With the effective control of schistosomiasis in China, the detection techniques for infection sources have also been developed. The rate and the intensity of infection among humans and livestocks have been significantly decreased in China, as the control program has entered the transmission control stage in most of the endemic areas. Under this situation, the traditional etiological diagnosing techniques and common immunological methods can not afford rapid detection of infection sources of schistosomiasis...
December 2015: chinese Journal of Parasitology & Parasitic Diseases
Anastasia Diakou, Angela Di Cesare, Stavroula Tzimoulia, Ioannis Tzimoulias, Donato Traversa
The eyeworm Thelazia callipaeda has been reported in different European countries, i.e. Italy, France, Germany, Switzerland, Spain, Portugal, Bosnia and Herzegovina, Croatia and Romania. The present article describes the first autochthonous case of ocular thelaziosis in a dog from Greece, thus revealing a new spot of infection in Europe. The dog in this case report, most likely infected at the northern borders of Greece, was referred to a private veterinary practice with conjunctivitis, oedema, keratitis, epiphora and mucoid discharge in both eyes...
July 2015: Parasitology Research
Teresa Baptista-Fernandes, Manuel Rodrigues, Dulce Domingues, Lucília Monteiro, Paulo Paixão, Patrícia Pereira, Raquel Tavares, Paulo Rodrigues, Isabel Maurício, Silvana Belo, Cristina Toscano
Human infections caused by Dirofilaria repens, a cosmopolitan zoonotic parasitosis endemic in Southern and Eastern Europe and Asia still is an underdiagnosed infection due to parasite identification difficulties. Here, we report the first human case of subcutaneous dirofilariasis by D. repens diagnosed in Portugal. This was probably an imported case from India, as judged by epidemiological and clinical data. With this presentation we aim to alert clinicians for the emergence of vector-borne zoonoses associated with global warming and international travel...
October 2015: Parasitology International
David Pace
Leishmaniasis remains an important neglected tropical infection that affects children more than adults. Geographical variation exists in the distribution of the various Leishmania species. Although the majority of the disease burden is found in poor countries, leishmaniasis is also endemic in several countries within Southern Europe. Transmission is mediated by the sandfly and may follow an anthroponotic or zoonotic cycle that also varies by region. The expression of leishmaniasis depends on a complex interaction between the type of infecting species and the host immune response...
November 2014: Journal of Infection
Chung-Jung Fu, Ting-Wu Chuang, Huei-Shan Lin, Chih-Hsiung Wu, Yung-Ching Liu, Mailynn K Langinlur, Min-Yun Lu, Wesley Wei-Wen Hsiao, Chia-Kwung Fan
BACKGROUND: Toxocariasis, which is predominantly caused by Toxocara canis (T. canis) infection, is a common zoonotic parasitosis worldwide; however, the status of toxocariasis endemicity in the Republic of the Marshall Islands (RMI) remains unknown. METHODS: A seroepidemiological investigation was conducted among 166 primary school children (PSC) aged 7-12 years from the capital area of the RMI. Western blots based the excretory-secretory antigens of larval T. canis (TcES) was employed, and children were considered seropositive if their serum reacted with TcES when diluted at a titer of 1:64...
2014: BMC Infectious Diseases
Yanhua Wang, Hong Yin
Toxoplasma gondii is an obligate intracellular parasitic protozoan that has a wide host range and causes a zoonotic parasitosis called toxoplasmosis. This infection causes significant morbidity, costs for care and loss of productivity and suffering. The most effective measures to minimize this parasite's harm to patients are prompt diagnosis and treatment and preventing infection. A parasite surface antigen, SAG1, is considered an important antigen for the development of effective diagnostic tests or subunit vaccines...
2014: Parasites & Vectors
A P Pipia, A Varcasia, G Tosciri, S Seu, M L Manunta, M C Mura, G Sanna, C Tamponi, E Brianti, A Scala
Dog heartworms Angiostrongylus vasorum and Dirofilaria immitis cause severe parasitological diseases; the importance of these parasitosis is growing due to their health impact on animals, the possible zoonotic implications and the recent spreading across several European countries and previously non-endemic areas. The aim of this study is to update the epidemiological scenario of cardiopulmonary nematodes A. vasorum and D. immitis in dogs of Sardinia island and to perform a morphological identification of larvae by the use of the Baermann and Knott techniques respectively and the molecular characterization of the mitochondrial cytochrome c oxidase subunit I (cox1) and the second ribosomal transcribed spacer region (ITS-2) of larvae L1 of A...
April 2014: Parasitology Research
Beatriz Brener, Patricia Riddell Millar, Danuza Pinheiro Bastos Garcia de Mattos, Flávia Uchôa, Bethânia Bastos, Ingrid Rodrigues Lyrio, Pedro Luis Aragon, Adriana Pittella Sudré
Report of two canine dirofilariosis cases of ectopic location in the state of Rio de Janeiro. This is the first report of erratic migration for this parasitosis in dogs in the state, calling attention to the short period of time between the two cases. The fact that the area is endemic for this parasite, its zoonotic potential and the report of human cases in the state, demonstrates that authorities should be alerted to the control programs of dirofilariosis along with the pathogenic profile of the infections...
May 2012: Revista do Instituto de Medicina Tropical de São Paulo
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