Morphologic aspects of Tetratrichomonas didelphidis isolated from opossums Didelphis marsupialis and Lutreolina crassicaudata

Tasca, Tiana; Carli, Geraldo Attílio De; Glock, Luiz; Jeckel-Neto, Emilio A.

doi:10.1590/s0074-02762001000200022

Cited by 10 publications

(5 citation statements)

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“…In a previous study, TASCA et al . (2001) 23 demonstrated superiority of Giemsa staining in comparison with iron hematoxylin staining in trophozoites of Tetratrichomonas didelphidis , similar to results from WENRICH et al . (1944) 24 for intestinal trichomonas also from culture.…”

Section: Discussionsupporting

confidence: 84%

Comparison of Permanent Staining Methods for the Laboratory Diagnosis of Trichomoniasis

Menezes

Mello

Tasca

2016

Rev. Inst. Med. trop. S. Paulo

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Trichomonas vaginalis is the etiologic agent of trichomoniasis, the most common non-viral sexually transmitted disease (STD) in the world. The diagnosis is based on wet mount preparation and direct microscopy on fixed and stained clinical specimens. The aim of this study was to compare the performance of different fixing and staining techniques used in the detection of T. vaginalis in urine. The smears were fixed and submitted to different methods of permanent staining and then, the morphological aspects of the parasites were analyzed and compared. The Papanicolaou staining with ethanol as the fixative solution showed to be the best method of permanent staining. Our data suggest that staining techniques in association with wet mount examination of fresh specimens contribute to increase the sensitivity in the diagnosis of trichomoniasis.

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Section: Discussionsupporting

confidence: 84%

Comparison of Permanent Staining Methods for the Laboratory Diagnosis of Trichomoniasis

Menezes

Mello

Tasca

2016

Rev. Inst. Med. trop. S. Paulo

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“…As mentioned, in Argentina, some opossums are considered a potential link between wild and domestic habitats for the transmission of zoonotic diseases (Gómez Villafañe et al, 2004;Pérez Carusi et al, 2009 (Navone et al, 1991). In Florianópolis, Brazil, L. crassicaudata has been found parasitized by the protozoan Tetratrichomonas didelphidis (Tasca et al, 2001). The number of opossums captured in this study was low to estimate the prevalence in the populations.…”

Section: Discussionmentioning

confidence: 73%

First report of Trichinella spiralis from the white-eared (Didelphis albiventris) and the thick-tailed opossum (Lutreolina crassicaudata) in central Argentina

et al. 2014

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SummaryTrichinellosis is a zoonotic disease caused by nematodes of the genus Trichinella. Humans, who are the final hosts, acquire the infection by eating raw or undercooked meat of different animal origin. Trichinella spiralis is an encapsulated species that infects mammals and is widely distributed in different continents. In Argentina, this parasite has been reported in the domestic cycle that includes pigs and synanthropic hosts (mainly rats and some carnivores). This is the first report of T. spiralis in the opossums Didelphis albiventris and Lutreolina crassicaudata in Argentina, and the first report in opossums in South America. In this survey, Trichinella larvae were detected by enzymatic digestion in three D. albiventris and one L. crassicaudata captured on pig and dairy farms located in the northeast of Buenos Aires province. The microscopic examination of the 32 larvae isolated presented the diagnostic characteristic of the genus Trichinella. Two larvae isolated from two D. albiventris and one from L. crassicaudata were identified as T. spiralis by nested multiplex PCR and confirmed by sequencing. Further research to determine the burdens of T. spiralis in opossums may contribute to a better understanding of the risk of T. spiralis transmission to the synanthropic populations.

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“…A study pointed out that, when the animal is handled before cooking, there is risk of infection with parasites, especially if its blood is contaminated. Other studies, carried out both in Brazil and in Colombia [32, 61], pointed out that D. marsipialis is also a reservoir for the parasite Leishmania braziliensis guyanensis Viannia 1911, which causes leishmaniasis, a disease that affects dogs and human beings and it triggers problems both in epithelial tissue and in viscera; the flagellate parasite Tetratrichomonas didelphidis (Hegner and Ratcliffe 1927) was observed, too [62]. Because of this evidence, it is worth discussing the use of D. marsupialis from a public health perspective, in face of the risk that local population is contaminated by eating opossum meat.…”

Section: Uses Of Common Opossummentioning

confidence: 99%

Common opossum (Didelphis marsupialisLinnaeus, 1758): food and medicine for people in the Amazon

Barros

Azevedo

2014

J Ethnobiology Ethnomedicine

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BackgroundIn the Amazon rainforest, biodiversity is a significant resource for traditional communities, as it can be used as a relevant source of protein and it has a promising zootherapeutic potential. Studies on knowledge and ways how local peoples use the fauna are still incipient. This paper presents both the knowledge on and food and medicinal uses of common opossum (Didelphis marsupialis) by riverine communities in an Amazon floodplain region.MethodsThe study was conducted with riverine communities in the municipality of Abaetetuba, Pará, Brazil. The main methods used were structured and semi-structured interviews, the “snowball” technique, and participant observation.ResultsThe study showed that D. marsupialis has an undeniable cultural significance for the local community, both in terms of food and medicine. Its meat is prized by inhabitants as it is classified as tasty, soft and, in some cases, it is designated as the best bushmeat in the region. The interviewees have demonstrated a thorough knowledge on various aspects of the animal’s biology, such as its diet, behavior, and places of occurrence. The hunting activity is practiced by men, but the preparation of meat and medicinal oil are tasks mainly performed by women. In medical terms, common opossum is used in the treatment of various diseases, such as rheumatism, asthma, sore throat, and inflammation. Given the importance of this species, its meat or live individuals are often sold in the city fair at prices that can reach R$ 40.00 (U$D 18,00) per individual.ConclusionsD. marsupialis is an important source of protein for riverine communities in the region studied. Its fat is used as a traditional medicine and it is indicated for many types of diseases. Although the species concerned is treated with hostility in various Brazilian regions, in the case of Abaetetuba this animal is strongly prized due to the good quality of its meat. However, despite the value assigned to the species, its consumption should be the subject of further studies, as this marsupial species has been described as a reservoir for parasites that cause severe diseases.

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Morphologic aspects of Tetratrichomonas didelphidis isolated from opossums Didelphis marsupialis and Lutreolina crassicaudata

Abstract: Tetratrichomonas didelphidis (Hegner & Ratcliffe, 1927) Andersen & Reilly, 1965

Cited by 10 publications

References 12 publications

Comparison of Permanent Staining Methods for the Laboratory Diagnosis of Trichomoniasis

Comparison of Permanent Staining Methods for the Laboratory Diagnosis of Trichomoniasis

First report of Trichinella spiralis from the white-eared (Didelphis albiventris) and the thick-tailed opossum (Lutreolina crassicaudata) in central Argentina

Common opossum (Didelphis marsupialisLinnaeus, 1758): food and medicine for people in the Amazon

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