English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Trypanosomatids are hemoflagellate parasites that even though they have been increasingly studied, many aspects of their biology and taxonomy remain unknown. The aim of this study was to investigate the  Trypanosoma  sp. transmission cycle in nonflying small mammals in an area where a case of acute Chagas disease occurred in Mangaratiba municipality, Rio de Janeiro state. Three expeditions were conducted in the area: the first in 2012, soon after the human case, and two others in 2015. Sylvatic mammals were captured and submitted to blood collection for trypanosomatid parasitological and serological exams. Dogs from the surrounding areas where the sylvatic mammals were captured were also tested for  T. cruzi  infection. DNA samples were extracted from blood clots and positive hemocultures, submitted to polymerase chain reaction targeting SSU rDNA and gGAPDH genes, sequenced and phylogenetic analysed. Twenty-one wild mammals were captured in 2012, mainly rodents, and 17 mammals, mainly marsupials, were captured in the two expeditions conducted in 2015. Only four rodents demonstrated borderline serological  T. cruzi  test (IFAT), two in 2012 and two in 2015.  Trypanosoma janseni  was the main  Trypanosoma  species identified, and isolates were obtained solely from  Didelphis aurita . In addition to biological differences, molecular differences are suggestive of genetic diversity in this flagellate species.  Trypanosoma  sp. DID was identified in blood clots from  D. aurita  in single and mixed infections with  T. janseni . Concerning dogs, 12 presented mostly borderline serological titers for  T. cruzi  and no positive hemoculture. In blood clots from 11 dogs,  T. cruzi  DNA was detected and characterized as TcI (n = 9) or TcII (n = 2). Infections by  Trypanosoma rangeli  lineage E (n = 2) and, for the first time,  Trypanosoma caninum ,  Trypanosoma dionisii , and  Crithidia mellificae  (n = 1 each) were also detected in dogs. We concluded that despite the low mammalian species richness and degraded environment, a high  Trypanosoma  species richness species was being transmitted with the predominance of  T. janseni  and not  T. cruzi , as would be expected in a locality of an acute case of Chagas disease.

Trypanosoma Species in Small Nonflying Mammals in an Area With a Single Previous Chagas Disease Case