Cystic echinococcosis in southern Brazil

Rue, Mario Luiz de la

doi:10.1590/s0036-46652008000100012

Cited by 15 publications

(14 citation statements)

References 6 publications

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“…Indeed, the high prevalence of D. caninum in dogs in Brazil (e.g., 45.7% in north-eastern and 36.8% in south-eastern Brazil) [32,36] is a consequence of the high prevalence of flea and lice infestations reported in different regions of the country [18,28,30,32,35] and indicates a high risk of zoonotic transmission in humans, particularly children, who live in close contact with infected animals. In the same way, cystic echinococcosis caused by E. granulosus is one of the most prevalent zoonosis in Argentina, Brazil, Chile, Peru, and Uruguay [289], being highly prevalent in southern Brazil, where up to 50% of the dogs may be infested [72,290]. While other canids ( Pseudalopex gymnocercus , Cerdocyon thous , and Chrysocyon brachyurus ) have been found naturally infested by E. granulosus in southern Brazil [290], dogs are the main reservoir of the parasite.…”

Section: Reviewmentioning

confidence: 99%

Dogs, cats, parasites, and humans in Brazil: opening the black box

Dantas‐Torres

Otranto

2014

Parasites & Vectors

155

103

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Dogs and cats in Brazil serve as primary hosts for a considerable number of parasites, which may affect their health and wellbeing. These may include endoparasites (e.g., protozoa, cestodes, trematodes, and nematodes) and ectoparasites (i.e., fleas, lice, mites, and ticks). While some dog and cat parasites are highly host-specific (e.g., Aelurostrongylus abstrusus and Felicola subrostratus for cats, and Angiostrongylus vasorum and Trichodectes canis for dogs), others may easily switch to other hosts, including humans. In fact, several dog and cat parasites (e.g., Toxoplasma gondii, Dipylidium caninum, Ancylostoma caninum, Strongyloides stercoralis, and Toxocara canis) are important not only from a veterinary perspective but also from a medical standpoint. In addition, some of them (e.g., Lynxacarus radovskyi on cats and Rangelia vitalii in dogs) are little known to most veterinary practitioners working in Brazil. This article is a compendium on dog and cat parasites in Brazil and a call for a One Health approach towards a better management of some of these parasites, which may potentially affect humans. Practical aspects related to the diagnosis, treatment, and control of parasitic diseases of dogs and cats in Brazil are discussed.

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Section: Reviewmentioning

confidence: 99%

Dogs, cats, parasites, and humans in Brazil: opening the black box

Dantas‐Torres

Otranto

2014

Parasites & Vectors

155

103

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“…It has been also proven that E. granulosus is highly endemic in the southern region of Brazil, especially Rio Grande do Sul state, where human cases are reported but the official number of cases are not clear (de la Rue 2008). Furthermore, Echinococcus vogeli is distributed in the northern part of Brazil, and some human polycystic echinococcosis (PE) cases have been reported in the Amazonas region (Soares et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Serological reactivity of patients with Echinococcus infections (E. granulosus, E. vogeli, and E. multilocularis) against three antigen B subunits

et al. 2010

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In serodiagnosis of cystic echinococcosis (CE) by Echinococcus granulosus infection, antigen B (AgB) has been utilized worldwide. However, it is known that about 40% of sera with alveolar echinococcosis (AE) by Echinococcus multilocularis infection recognize AgB. Furthermore, cross-reaction against AgB was also reported in sera from polycystic echinococcosis (PE) patients with Echinococcus vogeli infection. These findings indicate that AgB is widely common to the genus Echinococcus. On the other hand, AgB has several subunits, which are composed of the smallest 8-kDa subunit. In this study, reactivities of patient sera with three kinds of Echinococcus infections (CE, PE, and AE) were compared simultaneously under the same condition against three subunits of AgB (8, 16, and 24 kDa). Many articles have referred the fundamental 8- kDa subunit as a diagnostic antigen for CE. However, the reactivity for the 8-kDa subunit of the CE patient was not so high (47.7%) in this study. Furthermore, there are many cases in which serum of patients with PE or AE also recognizes this subunit (66.7% in PE; 45.9% in AE). AgB is effective for the detection of the genus Echinococcus infections, but it does not have high species specificity. Therefore, we need to pay attention to cross-reaction in serodiagnosis of CE in areas where plural species coexist.

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“…Although pigs become infected more rarely, they also seem to be well suited for developing fertile cysts (BRUZINSKAITE et al, 2009). Cystic lesions of varying shapes and sizes, corresponding to hydatid cysts in the viscera of cattle and sheep, have been reported by some authors in Rio Grande do Sul State, generally in the southern part of the state where farming is an important economic activity, which probably facilitates the access of dogs to these intermediate hosts (DE LA RUE et al, 2008;BALBINOTTI et al, 2012). However, the central/northern region of this state has not been targeted in investigations on cystic echinococcosis over recent years.…”

Section: Discussionmentioning

confidence: 99%

“…In Brazil, the disease is endemic in the southern part of the state of Rio Grande do Sul, causing infection in humans and animals and leading to high economic losses to livestock, as well as public health problems (ROMIG, 2003;GROSSO et al, 2012;DE LA RUE, 2008). Pigs are considered to be important intermediate hosts of the larval stage of the genus Echinococcus (hydatid cysts), thereby helping to maintain the parasite cycle on farms and consequently infecting dogs.…”

Section: Introductionmentioning

confidence: 99%

“…Pigs are considered to be important intermediate hosts of the larval stage of the genus Echinococcus (hydatid cysts), thereby helping to maintain the parasite cycle on farms and consequently infecting dogs. Dogs are then able to disperse the parasite eggs and this can be considered to present a risk of human infection (KAMENETZKY et al, 2002;DE LA RUE, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Echinococcus granulosus sensu lato and Taenia hydatigena in pig in southern Brazil

Monteiro

Botton

Tonin

et al. 2015

Rev. Bras. Parasitol. Vet.

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This study aimed to identify the parasitical etiologic agents of visceral cysts in pigs from the central/northern region of Rio Grande do Sul State, Brazil. Fifty-eight cysts were found in livers during veterinary inspection of swine slaughtered from January 2008 to 2012. Collected samples were submitted to macroscopic and molecular analyzes. Polymerase chain reaction (PCR), DNA sequencing and BLAST alignment of sequences was used to molecular characterization of the samples. By PCR 10.3% (6/58) of tested samples were positive for Echinococcus granulosus sensu lato and 56.9% (33/58) for Cysticercus tenuicollis. In this study, it was verified the occurrence of larval forms of E. granulosus sensu lato and Taenia hydatigena in pig herds from the central/northern region of Rio Grande do Sul State. The presence of both parasites is relevant due to the economic losses for the meat industry. Additionally, E. granulosus sensu lato has zoonotic importance and may be infecting pig herds in southern Brazil.Keywords: Echinococcus granulosus sensu lato, Taenia hydatigena, pigs, Brazil. ResumoNeste estudo, buscou-se identificar os agentes etiológicos de origem parasitária em cistos nas vísceras de suínos oriundos sa região centro/norte do sEstado do Rio Grande do Sul, Brasil. Cinquenta e oito cistos foram encontrados durante a inspeção veterinária em fígados de suínos abatidos entre janeiro de 2008 a 2012. As amostras foram submetidas às análises macroscópicas e moleculares. Reação em cadeia da polimerase (PCR), sequenciamento de DNA e alinhamento das sequências no BLAST (bases de dados do GenBank) foram utilizados na caracterização molecular das amostras. Das amostras analisadas, 10,3% (6/58) foram positivas para Echinococcus granulosus sensu lato e 56,9% (33/58) para Cysticercus tenuicollis. Evidenciou-se a ocorrência de larvas de E. granulosus sensu lato e Taenia hydatigena em rebanhos suínos na região centro/norte do RS. A presença de ambos os agentes é relevante devido às perdas econômicas para a indústria de carnes. Além disso, destaca-se que E. granulosus sensu lato possui importância zoonótica e pode contaminar os rebanhos suínos no sul do Brasil.Palavras-chave: Echinococcus granulosus sensu lato, Taenia hydatigena, suínos, Brasil.

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Cystic echinococcosis in southern Brazil

Cited by 15 publications

References 6 publications

Dogs, cats, parasites, and humans in Brazil: opening the black box

Dogs, cats, parasites, and humans in Brazil: opening the black box

Serological reactivity of patients with Echinococcus infections (E. granulosus, E. vogeli, and E. multilocularis) against three antigen B subunits

Echinococcus granulosus sensu lato and Taenia hydatigena in pig in southern Brazil

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