The connection between Trypanosoma cruzi transmission cycles by Triatoma brasiliensis brasiliensis: A threat to human health in an area susceptible to desertification in the Seridó, Rio Grande do Norte, Brazil

An outbreak of Chagas disease, possibly involving its vector Triatoma brasiliensis brasiliensis, was identified in the state of Rio Grande do Norte (RN). Given the historical significance of this vector in public health, the study aimed to evaluate its role in the transmission dynamics of the protoz...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Vanessa Lima-Neiva, Helena Keiko Toma, Lúcia Maria Abrantes Aguiar, Catarina Macedo Lopes, Letícia Paschoaletto Dias, Teresa Cristina Monte Gonçalves, Jane Costa
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270
Acceso en línea:	https://doaj.org/article/d2eb1d4d3e564231a297e490cb779c39
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d2eb1d4d3e564231a297e490cb779c39
record_format	dspace
spelling	oai:doaj.org-article:d2eb1d4d3e564231a297e490cb779c392021-11-18T09:12:18ZThe connection between Trypanosoma cruzi transmission cycles by Triatoma brasiliensis brasiliensis: A threat to human health in an area susceptible to desertification in the Seridó, Rio Grande do Norte, Brazil1935-27271935-2735https://doaj.org/article/d2eb1d4d3e564231a297e490cb779c392021-11-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC8577756/?tool=EBIhttps://doaj.org/toc/1935-2727https://doaj.org/toc/1935-2735An outbreak of Chagas disease, possibly involving its vector Triatoma brasiliensis brasiliensis, was identified in the state of Rio Grande do Norte (RN). Given the historical significance of this vector in public health, the study aimed to evaluate its role in the transmission dynamics of the protozoan Trypanosoma cruzi in an area undergoing desertification in the Seridó region, RN, Brazil. We captured triatomines in sylvatic and anthropic ecotopes. Natural vector infection was determined using parasitological and molecular methods and we identified discrete typing units (DTUs) of T. cruzi by analyzing the COII gene of mtDNA, 24Sα rDNA, and mini-exon gene. Their blood meals sources were identified by amplification and sequencing of the mtDNA cytochrome b gene. A total of 952 T. b. brasiliensis were captured in peridomestic (69.9%) and sylvatic ecotopes (30.4%). A wide range of natural infection rates were observed in peridomestic (36.0% - 71.1%) and sylvatic populations (28.6% - 100.0%). We observed the circulation of TcI and TcII DTUs with a predominance of Tcl in sylvatic and peridomestic environments. Kerodon rupestris, rocky cavy (13/39), Homo sapiens, human (8/39), and Bos taurus, ox (6/39) were the most frequently detected blood meals sources. Thus, Triatoma b. brasiliensis is invading and colonizing the human dwellings. Furthermore, high levels of natural infection, coupled with the detection of TcI and TcII DTUs, and also the detection of K. rupestris and H. sapiens as blood meals sources of infected T. b. brasiliensis indicate a risk of T. cruzi transmission to human populations in areas undergoing desertification. Author summary Chagas disease currently affects about six to seven million people worldwide, resulting in high morbidity, mortality, and economic burden in endemic countries of Latin America. Its etiological agent, Trypanosoma cruzi, circulates among a wide variety of mammalian and insect vectors. Triatoma brasiliensis brasiliensis is adapted to the dry and warm climate of the Caatinga biome, and is considered the main vector in the semi-arid areas of northeastern Brazil. Information on the infestation, natural infection rates, T. cruzi strains, and blood meals sources of this vector is crucial for understanding the dynamics of T. cruzi transmission in areas susceptible to desertification. Triatoma b. brasiliensis colonizes peridomestic structures, particularly in the stone walls of cattle corrals that emerge as a refuge for sylvatic populations where they access a variety of blood meals sources. The predominance of the TcI strain in the sylvatic and peridomestic environments shows an overlap of transmission cycles by T. cruzi mediated by T. b. brasiliensis. The high rates of natural infection and the evidence of their feeding on humans and the rodent K. rupestris are worrisome and indicate the threat this vector poses to human health in the area studied.Vanessa Lima-NeivaHelena Keiko TomaLúcia Maria Abrantes AguiarCatarina Macedo LopesLetícia Paschoaletto DiasTeresa Cristina Monte GonçalvesJane CostaPublic Library of Science (PLoS)articleArctic medicine. Tropical medicineRC955-962Public aspects of medicineRA1-1270ENPLoS Neglected Tropical Diseases, Vol 15, Iss 11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270
spellingShingle	Arctic medicine. Tropical medicine RC955-962 Public aspects of medicine RA1-1270 Vanessa Lima-Neiva Helena Keiko Toma Lúcia Maria Abrantes Aguiar Catarina Macedo Lopes Letícia Paschoaletto Dias Teresa Cristina Monte Gonçalves Jane Costa The connection between Trypanosoma cruzi transmission cycles by Triatoma brasiliensis brasiliensis: A threat to human health in an area susceptible to desertification in the Seridó, Rio Grande do Norte, Brazil
description	An outbreak of Chagas disease, possibly involving its vector Triatoma brasiliensis brasiliensis, was identified in the state of Rio Grande do Norte (RN). Given the historical significance of this vector in public health, the study aimed to evaluate its role in the transmission dynamics of the protozoan Trypanosoma cruzi in an area undergoing desertification in the Seridó region, RN, Brazil. We captured triatomines in sylvatic and anthropic ecotopes. Natural vector infection was determined using parasitological and molecular methods and we identified discrete typing units (DTUs) of T. cruzi by analyzing the COII gene of mtDNA, 24Sα rDNA, and mini-exon gene. Their blood meals sources were identified by amplification and sequencing of the mtDNA cytochrome b gene. A total of 952 T. b. brasiliensis were captured in peridomestic (69.9%) and sylvatic ecotopes (30.4%). A wide range of natural infection rates were observed in peridomestic (36.0% - 71.1%) and sylvatic populations (28.6% - 100.0%). We observed the circulation of TcI and TcII DTUs with a predominance of Tcl in sylvatic and peridomestic environments. Kerodon rupestris, rocky cavy (13/39), Homo sapiens, human (8/39), and Bos taurus, ox (6/39) were the most frequently detected blood meals sources. Thus, Triatoma b. brasiliensis is invading and colonizing the human dwellings. Furthermore, high levels of natural infection, coupled with the detection of TcI and TcII DTUs, and also the detection of K. rupestris and H. sapiens as blood meals sources of infected T. b. brasiliensis indicate a risk of T. cruzi transmission to human populations in areas undergoing desertification. Author summary Chagas disease currently affects about six to seven million people worldwide, resulting in high morbidity, mortality, and economic burden in endemic countries of Latin America. Its etiological agent, Trypanosoma cruzi, circulates among a wide variety of mammalian and insect vectors. Triatoma brasiliensis brasiliensis is adapted to the dry and warm climate of the Caatinga biome, and is considered the main vector in the semi-arid areas of northeastern Brazil. Information on the infestation, natural infection rates, T. cruzi strains, and blood meals sources of this vector is crucial for understanding the dynamics of T. cruzi transmission in areas susceptible to desertification. Triatoma b. brasiliensis colonizes peridomestic structures, particularly in the stone walls of cattle corrals that emerge as a refuge for sylvatic populations where they access a variety of blood meals sources. The predominance of the TcI strain in the sylvatic and peridomestic environments shows an overlap of transmission cycles by T. cruzi mediated by T. b. brasiliensis. The high rates of natural infection and the evidence of their feeding on humans and the rodent K. rupestris are worrisome and indicate the threat this vector poses to human health in the area studied.
format	article
author	Vanessa Lima-Neiva Helena Keiko Toma Lúcia Maria Abrantes Aguiar Catarina Macedo Lopes Letícia Paschoaletto Dias Teresa Cristina Monte Gonçalves Jane Costa
author_facet	Vanessa Lima-Neiva Helena Keiko Toma Lúcia Maria Abrantes Aguiar Catarina Macedo Lopes Letícia Paschoaletto Dias Teresa Cristina Monte Gonçalves Jane Costa
author_sort	Vanessa Lima-Neiva
title	The connection between Trypanosoma cruzi transmission cycles by Triatoma brasiliensis brasiliensis: A threat to human health in an area susceptible to desertification in the Seridó, Rio Grande do Norte, Brazil
title_short	The connection between Trypanosoma cruzi transmission cycles by Triatoma brasiliensis brasiliensis: A threat to human health in an area susceptible to desertification in the Seridó, Rio Grande do Norte, Brazil
title_full	The connection between Trypanosoma cruzi transmission cycles by Triatoma brasiliensis brasiliensis: A threat to human health in an area susceptible to desertification in the Seridó, Rio Grande do Norte, Brazil
title_fullStr	The connection between Trypanosoma cruzi transmission cycles by Triatoma brasiliensis brasiliensis: A threat to human health in an area susceptible to desertification in the Seridó, Rio Grande do Norte, Brazil
title_full_unstemmed	The connection between Trypanosoma cruzi transmission cycles by Triatoma brasiliensis brasiliensis: A threat to human health in an area susceptible to desertification in the Seridó, Rio Grande do Norte, Brazil
title_sort	connection between trypanosoma cruzi transmission cycles by triatoma brasiliensis brasiliensis: a threat to human health in an area susceptible to desertification in the seridó, rio grande do norte, brazil
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/d2eb1d4d3e564231a297e490cb779c39
work_keys_str_mv	AT vanessalimaneiva theconnectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT helenakeikotoma theconnectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT luciamariaabrantesaguiar theconnectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT catarinamacedolopes theconnectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT leticiapaschoalettodias theconnectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT teresacristinamontegoncalves theconnectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT janecosta theconnectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT vanessalimaneiva connectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT helenakeikotoma connectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT luciamariaabrantesaguiar connectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT catarinamacedolopes connectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT leticiapaschoalettodias connectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT teresacristinamontegoncalves connectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil AT janecosta connectionbetweentrypanosomacruzitransmissioncyclesbytriatomabrasiliensisbrasiliensisathreattohumanhealthinanareasusceptibletodesertificationintheseridoriograndedonortebrazil
_version_	1718420992297009152

The connection between Trypanosoma cruzi transmission cycles by Triatoma brasiliensis brasiliensis: A threat to human health in an area susceptible to desertification in the Seridó, Rio Grande do Norte, Brazil

Ejemplares similares