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Bras. Parasitol. Vet."],"abstract":"<jats:p>Abstract Non-human primates are potential hosts for helminths of various phyla, and the presence of these parasites can cause changes in organ morphology and functionality. In this study, we present the alterations induced by the presence of acanthocephalan parasites in the small intestine of a snub-nosed monkey that died in the Bosque Rodrigues Alves, municipality of Bel\u00e9m, Par\u00e1 state, Brazil. Ten specimens of Saimiri sciureus had their intestines analyzed and the parasites recovered were cleaned, quantified, fixed and observed using light microscopy and scanning electron microscopy, and fragments of the intestine were separated for histological analysis to identify the alterations. All the animals were parasitized, and a total of 50 specimens representing the Acanthocephala Phylum were recovered, which morphologically showed characteristics compatible with Prosthenorchis elegans (Diesing, 1851). Light microscopy revealed the presence of parasites attached to the mucosal layer, passing through the underlying layers until they reached the muscular layer. Scanning electron microscopy showed the tissue lesions caused by the proboscis hooks and the flattening of the intestinal villi in the presence of the parasite. The presence of the parasites in the intestine changed the morphology of the organ, possibly causing loss of functionality at the site of attachment and adjacent tissue.<\/jats:p>","DOI":"10.1590\/s1984-29612025013","type":"journal-article","created":{"date-parts":[[2025,4,2]],"date-time":"2025-04-02T07:57:28Z","timestamp":1743580648000},"source":"Crossref","is-referenced-by-count":0,"title":["Histopathological aspects of the relationship Saimiri sciureus \u00d7 Prosthenorchis elegans (Acanthocephala) in a preserved environment of an urban rainforest fragment"],"prefix":"10.1590","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9025-4976","authenticated-orcid":false,"given":"Rog\u00e9rio Antonio Ribeiro","family":"Rodrigues","sequence":"first","affiliation":[{"name":"Universidade Federal Rural da Amaz\u00f4nia,  Brasil; Universidade Federal Rural da Amaz\u00f4nia,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7140-8124","authenticated-orcid":false,"given":"Washington Luiz Assun\u00e7\u00e3o","family":"Pereira","sequence":"additional","affiliation":[{"name":"Universidade Federal Rural da Amaz\u00f4nia,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3221-5017","authenticated-orcid":false,"given":"Raul Henrique da Silva","family":"Pinheiro","sequence":"additional","affiliation":[{"name":"Universidade Federal Rural da Amaz\u00f4nia,  Brasil; Universidade Federal Rural da Amaz\u00f4nia,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7833-1334","authenticated-orcid":false,"given":"Elane Guerreiro","family":"Giese","sequence":"additional","affiliation":[{"name":"Universidade Federal Rural da Amaz\u00f4nia,  Brasil; Universidade Federal Rural da Amaz\u00f4nia,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","published-online":{"date-parts":[[2025]]},"reference":[{"key":"ref1","series-title":"Georgis parasitologia veterin\u00e1ria.","first-page":"110","volume-title":"Helmintos.","author":"Bowman DD","year":"2010","edition":"9."},{"issue":"2","key":"ref2","doi-asserted-by":"crossref","first-page":"364","DOI":"10.7589\/2015-06-163","article-title":"Occurrence of Prosthenorchis elegans in Free-living Primates from the Atlantic Forest of Southern Bahia, Brazil","volume":"52","author":"Catenacci LS","year":"2016","journal-title":"J Wildl Dis"},{"issue":"5","key":"ref3","doi-asserted-by":"crossref","first-page":"717","DOI":"10.2307\/3275912","article-title":"Acanthocephalans and cestodes of South American monkeys and marmosets","volume":"49","author":"Dunn FL","year":"1963","journal-title":"J Parasitol"},{"key":"ref4","doi-asserted-by":"crossref","first-page":"495","DOI":"10.1590\/S0074-02761950000100020","article-title":"Revis\u00e3o do g\u00eanero Prosthenorchis Travassos, 1915 (Acanthocephala)","volume":"48","author":"Machado Fo DA","year":"1950","journal-title":"Mem Inst Oswaldo Cruz"},{"issue":"4","key":"ref5","doi-asserted-by":"crossref","first-page":"601","DOI":"10.1007\/s10344-009-0357-1","article-title":"Pathological and parasitological findings in a wild red titi monkey, Callicebus cupreus (Pitheciidae, Platyrrhini)","volume":"56","author":"M\u00fcller B","year":"2010","journal-title":"Eur J Wildl Res"},{"issue":"12","key":"ref6","doi-asserted-by":"crossref","first-page":"1514","DOI":"10.1590\/s0100-736x2017001200025","article-title":"Pathological and parasitological characterization of Prosthenorchis elegans in a free-ranging marmoset Callithrix geofroyi from the Brazilian Atlantic Forest","volume":"37","author":"Oliveira AR","year":"2017","journal-title":"Pesq Vet Bras"},{"issue":"5","key":"ref7","doi-asserted-by":"crossref","first-page":"1705","DOI":"10.1590\/1678-4162-11868","article-title":"Preval\u00eancia e distribui\u00e7\u00e3o espacial da ocorr\u00eancia de helmintos em primatas n\u00e3o humanos de vida livre no estado do Rio de Janeiro, Brasil","volume":"72","author":"Pereira FV","year":"2020","journal-title":"Arq Bras Med Vet Zootec"},{"issue":"6","key":"ref8","doi-asserted-by":"crossref","first-page":"1473","DOI":"10.1590\/S0102-09352007000600019","article-title":"Ocorr\u00eancia de Acanthocephala em Leontopithecus (Lesson, 1840), cativos: aspectos cl\u00ednico-patol\u00f3gicos. Callitrichidae-Primates","volume":"59","author":"Pissinatti L","year":"2007","journal-title":"Arq Bras Med Vet Zootec"},{"issue":"1","key":"ref9","doi-asserted-by":"crossref","first-page":"2402","DOI":"10.1038\/s41598-023-28585-1","article-title":"Cryptic diversity in a gastrointestinal acanthocephalan of New World primates from Costa Rica","volume":"13","author":"Rojas-S\u00e1nchez E","year":"2023","journal-title":"Sci Rep"},{"issue":"4","key":"ref10","first-page":"830","article-title":"Medical-surgical management of intestinal infection by Prosthenorchis elegans in nonhuman primates from Costa Rica","volume":"54","author":"Rojas-S\u00e1nchez E","year":"2022","journal-title":"J Zoo Wildl Med"},{"issue":"1","key":"ref11","article-title":"Helminths of Wied\u2019s marmoset (Callithrix kuhlii (Coimbra-Filho, 1985) (Primates: Callitrichidae)) from the Atlantic Forest, Southern Bahia State, Brazil","volume":"33","author":"Soares ADS","year":"2024","journal-title":"Rev Bras Parasitol Vet"},{"key":"ref12","series-title":"Estudos em zootecnia e ci\u00eancia animal.","first-page":"116","volume-title":"Zoonoses transmitidas por primatas n\u00e3o humanos.","author":"Sobreira EA","year":"2020"},{"issue":"5","key":"ref13","doi-asserted-by":"crossref","first-page":"574","DOI":"10.1645\/17-93","article-title":"An Alternative Treatment Against Acanthocephala (Prosthenorchis elegans) in Captive Squirrel Monkeys (Saimiri sciureus) in Mexico","volume":"104","author":"Z\u00e1rate-Ramos JJJ","year":"2018","journal-title":"J Parasitol"}],"container-title":["Revista Brasileira de Parasitologia Veterin\u00e1ria"],"original-title":["Aspectos histopatol\u00f3gicos da rela\u00e7\u00e3o Saimiri sciureus \u00d7 Prosthenorchis elegans (Acanthocephala) em ambiente preservado de um fragmento de floresta ombr\u00f3fila urbana"],"link":[{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_pdf&pid=S1984-29612025000100403&tlng=en","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,4,2]],"date-time":"2025-04-02T07:57:41Z","timestamp":1743580661000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_arttext&pid=S1984-29612025000100403&tlng=en"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025]]},"references-count":13,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2025]]}},"alternative-id":["S1984-29612025000100403"],"URL":"https:\/\/doi.org\/10.1590\/s1984-29612025013","relation":{},"ISSN":["1984-2961","0103-846X"],"issn-type":[{"type":"electronic","value":"1984-2961"},{"type":"print","value":"0103-846X"}],"subject":[],"published":{"date-parts":[[2025]]},"article-number":"e021824"}}