检索结果-南通市图书馆

Behavioral parameters of six populations of/Wecavs phyllosomus longipennis(Heteroptera:Reduviidae)from areas with high and low prevalences of trypanosoma cruzi human infection

引用

Insect Science 2021年第3期28卷 850-860页

作者： Jose Alejandro Martinez-lbarra Benjamin Nogueda-Torres Oziel Dante Montanez-Valdez J.Guadalupe Michel-Parra Miguel Angel Ambriz-Santos Laboratories de Entomologia Medica Centro Universitario del SurUniversidad de GuadalajaraCiudad GuzmanJaliscoMexico Cuerpo Academico de Cuencas Humedales y SustentabilidadDepartamento de Ciencias de la NaturalezaCentro Universitario del SurUniversidad de GuadalajaraCiudad GuzmanJaliscoMexico Becario de COFAA Escuela Nacional de Ciencias BioldgicasInstituto Politecnico NacionalCiudad de MexicoMexico

Three behaviors of epidemiological importance,namely feeding latency,feeding duration and defecation latency,for six populations of Meccus phyllosomus longipennis(Usinger)from areas of central,western and north-central Mexico with high(HP)and low(LP)prevalence of trypanosoma cruzi(Chagas)human infection were evaluated in this *** median feeding latency(the time taken to begin feeding)was highly variable between ***-instar comparisons showed that at least 65%of the LP populations(N3 to adult)started to feed significantly(P<0.05)later than the HP population,with N1 showing no difference,and N2 from LP populations feeding sooner than those from HP *** six populations had similar median feeding durations within instars.A higher(P<0.05)percentage of the instars from HP populations defecated faster than the respective instars from the three LP *** 25%of the young nymphs(N1 to N3)and females in the HP populations defecated<2 min postfeeding,compared with 4%-6%of the young nymphs and 1.3%-3%of females in the LP ***,17.7%-38.8%of the older nymphs(N4 to N5)in the HP populations and 6.8%-13.4%in the LP populations defecated during or immediately after *** results indicate that the HP populations have a greater potential than the LP populations to transmit *** infections,which may underlie the differences in the prevalence of *** infection in some areas where M *** is currently distributed.

关键词： Chagas disease Meccus phyllosomus longipennis populations Mexico Tri-atominae trypanosoma cruzi vectorial capacity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Unlocking the in vitro anti-trypanosoma cruzi activity of halophyte plants from the southern Portugal

引用

Asian Pacific Journal of Tropical Medicine 2016年第8期9卷 714-719页

作者： Marta Oliveira Policarpo Ademar Sales Junior Maria Joao Rodrigues Marina DellaGreca Luisa Barreira Silvane Maria Fonseca Murta Alvaro Jose Romanha Luisa Custodio Center of Marine Sciences (CCMAR) University of AlgarveCampus de Gambelas 8005-139 FaroPortugal Centro de Pesquisas Rene Rachou FIOCRUZ Belo HorizonteMinas GeraisBrazil Dipartimento di Chimica Organica e Biochimica Universita` Federico Ⅱ Complesso Universitario Monte Sant'AngeloVia Cintia 4I-80126NapoliItaly

Objective:To evaluate the in vitro anti-trypanosoma cruzi（***） activity of organic extracts prepared from halophyte species collected in the southern coast of Portugal（Algarve）,and chemically characterize the most active ***:Acetone,dichloromethane and methanol extracts were prepared from 31 halophyte species and tested in vitro against trypomastigotes and intracellular amastigotes of the Tulahuen strain of *** most active extract was fractionated by preparative HPLC-DAD,affording 11 *** most selective fraction was fully characterized by ***:From 94 samples tested,one was active,namely the root dichloromethane extract of Juncus acutus(IC50 < 20 μg/mL).This extract was fractionated by HPLC,affording 11 fractions,one of them containing only a pure compound（juncunol）,and tested for anti-parasitic *** 8(IC50 = 4.1 μg/mL) was the most active,and was further characterized by *** major compounds were phenanthrenes,9,10-dihydrophenanthrenes and ***:Our results suggest that the compounds identified in fraction 8 are likely responsible for the observed anti parasitic *** research is in progress aiming to isolate and identify the specific active *** the best of our knowledge,this is the first report on the in vitro anti *** activity of halophyte species.

关键词： Chagas disease Halophytes trypanosoma cruzi Phenanthrenes Juncunol

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Seropositivity for trypanosoma cruzi in domestic dogs from Sonora,Mexico

引用

Infectious Diseases of Poverty 2017年第1期6卷 1067-1073页

作者： Minerva Arce-Fonseca Silvia C.Carrillo-Sanchez Ramon M.Molina-Barrios Mariana Martinez-Cruz Jesus R.Cedillo-Cobian Yuly A.Henao-Diaz Olivia Rodriguez-Morales Department of Molecular Biology National Institute of Cardiology“Ignacio Chavez”Juan Badiano No.1Col.Seccion XVIDelegacion Tlalpan14080 Mexico CityMexico Department of Agronomics and Veterinary Sciences Technological Institute of Sonora5 de Febrero 818 SurCentro85000Cd ObregonMexico CitySonoraMexico

Background:Chagas disease is an important health problem in Latin America due to its incapacitating effects and associated *** on seropositivity for trypanosoma cruzi in Mexican dogs have demonstrated a direct correlation between seropositivity in humans and dogs,which can act as sentinels for the disease in this *** objective of this study was to determine the seropositivity for *** infection in dogs from Sonora,a northern borderstate of ***:Responsible pet owners were selected at random from an urban area of Empalme municipality,Sonora,Mexico,and from there,180 dog samples were *** antibodies were determined using the enzymelinked immunosorbent assay(ELISA)*** ELISA sera were processed by indirect immunofluorescence to confirm the presence of *** *** the statistical analysis,chi-square tests were ***:Dogs’sera showed a seropositivity rate of 4.44%.The rate of seropositivity was not associated with the dogs’age,sex,or socioeconomics pertaining to the geographical *** sample(1/180,0.55%)showed the acute state of the ***:The study found a presence of *** antibodies in dogs in this area,which suggests vector *** is a need for active surveillance programs throughout the state of Sonora and vector control strategies should also be implemented in endemic regions.

关键词： Chagas disease Epidemiology Reservoir US-Mexico border dogs trypanosoma cruzi Mexico

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Re-emerging threat of trypanosoma cruzi vector transmission in El Salvador, update from 2018 to 2020

引用

Infectious Diseases of Poverty 2022年第4期11卷 101-102页

作者： Marvin Stanley Rodriguez Yuko Nitahara Michelle Cornejo Kevin Siliezar Rafael Grande Ana Gonzalez Kotaro Tasaki Yu Nakagama Yu Michimuko Yoko Onizuka Junko Nakajima-Shimada Jose Eduardo Romero Jose Ricardo Palacios Carmen Elena Arias Wilam Mejia Yasutoshi Kido Ricardo Cardona Alvarenga Department of Virology and Parasitology Graduate School of MedicineOsaka Metropolitan University1-4-3 Asahi-machiAbeno-kuOsaka 545-8585 Japan 不详

Background:Since the late twentieth century,Chagas disease gained global attention to suppress the vector burden as a main control strategy in endemic *** Central America,multi-national initiative successfully achieved significant reduction in the estimated disease prevalence as well as elimination of the region's principal vector species at the time in *** the last decade has witnessed significant changes in ecosystem-such as urbanization and replacement of the main vector species-that can possibly affect the vector's habitation and residual transmission,the up-to-date vector burden in the region has not been evaluated thoroughly due to the cessation of active vector *** aim of this study was to update the risk of vector-borne trypanosoma cruzi infection in El Salvador,the top Chagas disease-endemic country in Central ***:A nationwide vector survey was conducted in the domestic environment of El Salvador from September 2018 to November *** selection of the houses for inspection was based on expert purposeful *** for *** was examined by microscopic observation of the insects'feces,followed by a species confrmation using *** data were analyzed using R software version *** estimates with 95%confidence intervals were inferred using the Jeffrey's method provided under the epiR ***:A total of 1529 Triatoma dimidiata was captured from 107 houses(infestation rate,34.4%;107/311)in all the fourteen departments of the country visited within the period;prevalence of *** infection was as high as 10%(153/1529).In the country,domestic *** infestation was distributed ubiquitously,while *** infection rates varied across the *** out of fourteen departments showed higher infection rates than the average,suggesting sporadic high-risk areas in the ***:Our comprehensive study revealed substantial *** infection of *** across the country,in

关键词： Chagas disease Vector transmission Triatomine trypanosoma cruzi Triatoma dimidiata

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Clinicopathological alterations in wild mammals from the reservoir system of trypanosoma cruzi:a scoping review

引用

Animal Diseases 2024年第1期4卷 48-58页

作者： Ricardo Sanchez Pérez JoséManuel Aranda-Coello JoséAntonio De Fuentes Vicente Oscar Rico Chavez Facultad de Estudios Superiores Cuautitlan Universidad Nacional Autonoma deMexicoCuautitlan lzcalliEstadodeMexicoMexico El Colegio de la Frontera Sur-Unidad Campeche CampecheCampecheMexico Instituto de Ciencias Biologicas-Universidad de Ciencias y Artes de Chiapas Tuxtla GutierrezChiapasMexico Facultad de Medicina Veterinaria y Zootecnia-Universidad Nacional Autonoma deMexico Ciudad deMexicoMexico

trypanosoma cruzi is the etiologic agent of Chagas *** flagellated protozoan is transmitted to humans as well as different species of domestic and wild animals via vectors from the Reduviidae family(known as"kissing bugs").Despite the fact that hundreds of species of wild mammals are part of the reservoir system,the morphologi-cal changes and clinical manifestations resulting from the pathogenesis of the infection have been largely *** aim of this review is to systematically compile the available information regarding clinicopathological altera-tions in wild mammals due to natural infection by *** was obtained from six online bibliographic data search platforms,resulting in the identification of 29 publications that met the inclusion *** was the most common clinical manifestation,cardiac damage was the main finding at necropsy,and lymphoplas-macytic inflammation was the most frequent microscopic ***,regardless of its role as a reservoir,*** has the potential to affect the health status of wild mammals,a situation that highlights the need for further research to analyze,measure,and compare its effects at both the individual and population levels.

关键词： trypanosoma cruzi Chagas disease American trypanosomiasis Clinicopathological alterations Natural infection Wild mammals

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cardiac Lesions in Naturally Infected Dogs with trypanosoma cruzi

引用

Journal of Agricultural Science and Technology(A) 2011年第6期1卷 932-938页

作者： K. Y. Acosta-Viana E. Guzman-Marin M. Jimenez-Coello M. A. Torres-Leon R. F. Colin-Flores A.Ortega-Pacheco Laboratory of Cell Biology C.A. Biomedicine of Infectious and Parasitic Diseases Regional Research Centre ＂Dr. Hideyo Noguchi＂ Autonomous University of Yucatan Av. Itzaes # 490 Merida Yucatan Mexico Laboratory of Animal Pathology Faculty of Veterinary Medicine Autonomous University of Yucatan Merida Yucatan AP 4-116 Mexico Department of Internal Medicine and Surgery Faculty of Veterinary Medicine Autonomous University of Yucatan Merida Yucatan AP 4-116 Mexico

With the purpose to determine the frequency and type of cardiac lesions in naturally exposed dogs to trypanosoma cruzi, ninety one stray dogs, capture by the Canine and Feline Control Center （dog pound） from the municipality of Merida, were studied. Before euthanasia, blood samples were taken to detect 72 cruzi antigens by indirect immunofluorescence antibody test and Western Blot and to detect the genome of parasite by Polymerase Chain Reaction. Immediately after euthanasia, hearts were macroscopically evaluated and a sample of the middle right atrial wall of each dog was taken for histopathological analyses. DNA was also obtained from paraffin blocks of seropositives animals with microscopic lesions to detect 72 cruzi genome. Of ninety one dogs, thirteen were seropositive. All seropositive dogs showed an association （P 〈 0.05） with lymphocytoplasmatic myocarditis. The presence of the 72 cruzi genome was also detected by PCR in cardiac septum tissue of seropositive dogs and in all the cases with microscopic lesions indicating the high pathogenicity of the local circulating strain. No association with macroscopic lesions was observed in seropositive dogs. Also, the presence of Dirofilaria immitis （D. immitis） was found in 6% of dogs evaluated. This study demonstrates a high tropism to cardiac tissue and virulence of the strains of 72 cruzi circulating in the studied dog population.

关键词： Dogs trypanosoma cruzi IFAT PCR myocarditis.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Preventing the transmission of American trypanosomiasis and its spread into non-endemic countries

引用

Infectious Diseases of Poverty 2015年第1期4卷 495-505页

作者： Qin Liu Xiao-Nong Zhou National Institute of Parasitic Diseases Chinese Center for Disease Control and PreventionKey Laboratory of Parasite and Vector BiologyMinistry of HealthWHO Collaborating Center for Tropical DiseasesShanghai 200025P.R.China

American trypanosomiasis,commonly known as Chagas disease,is caused by the flagellate protozoan parasite trypanosoma *** estimated eight million people infected with *** currently reside in the endemic regions of Latin ***,as the disease has now been imported into many non-endemic countries outside of Latin America,it has become a global health *** reviewed the transmission patterns and current status of disease spread pertaining to American trypanosomiasis at the global level,as well as recent advances in *** on an analysis of the gaps in American trypanosomiasis control,we put forward future research priorities that must be implemented to stop the global spread of the disease.

关键词： American trypanosomiasis Chagas disease trypanosoma cruzi Transmission control

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Identification and characterization of the causative triatomine bugs of anaphylactic shock in Zhanjiang,China

引用

Infectious Diseases of Poverty 2018年第1期7卷 1325-1333页

作者： Ya-Lan Huang Da-Na Huang Wei-Hua Wu Fan Yang Xiao-Min Zhang Miao Wang Yi-Jun Tang Qian Zhang Li-Fei Peng Ren-Li Zhang Shenzhen Center for Disease Control and Prevention Shenzhen 518055China Department of Parasitology Guangdong Medical UniversityZhanjiang 524005China

Background:Two health concerns primarily related to triatomine bugs are transmission of trypanosoma cruzi through infective feces,and allergic reactions induced by triatomine *** the Southwestern United States,reduviid bugs bites commonly cause insect *** South China,four cases of anaphylactic shock have been reported after this bite *** further classify the species of these bugs and confirm the sensitization of the triatomine saliva,we caught triatomine bugs from the region where the bites occurred and performed phylogenetic and immunohistochemical(IHC)***:Triatomine bugs were collected in Donghai Island of Zhanjiang City in South *** genomic DNA was extracted from three legs of the *** fragments of mitochondrial 16S rRNA,cytochrome c oxidase subunit I(COI)gene and nuclear ribosomal 18S and 28S rRNA genes were obtained by PCR and sequenced.A phylogenetic tree was constructed based on the sequence of 16S rRNA gene using a maximum likelihood method with MEGA 7.0 *** specific fragments and vertebrate COI genes were amplified from the fecal DNA to detect the infection of trypanosomes and analyze the blood feeding patterns,***-embedded sections were then prepared from adult triatomines and sent for IHC ***:We collected two adult triatomine bugs in Donghai *** and molecular analyses indicated that the triatomines were Triatoma *** fragments of *** or other trypanosomes were detected from the fecal *** gene segments of Homo sapiens and Mus musculus were successfully *** allergens which induced specific IgE antibodies in human serum were localized in the triatomine saliva by IHC ***:The two triatomine bugs from Donghai Island were *** had bitten humans and *** saliva should contain the allergens related to the allergic symptoms and even anaphylactic shock of exposed *** consi

关键词： Triatoma rubrofasciata Chagas disease trypanosoma cruzi Anaphylactic shock

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Evaluation of parasitemia by qPCR in patients with chronic Chagas disease treated with benznidazole

引用

Asian Pacific Journal of Tropical Medicine 2023年第12期16卷 565-572页

作者： Tycha Bianca Sabaini Pavan Eros Antônio de Almeida Rodrigo Gonçalves de Lima Jamiro da Silva Wanderley Luiz Cláudio Martins Sandra Cecília Botelho Costa Gláucia Elisete Barbosa Marcon Departamento de Clínica Médica Faculdade de Ciências MédicasUniversidade Estadual de Campinas(Unicamp)CampinasSão PauloBrasil Fundação Oswaldo Cruz Fiocruz Mato Grosso do SulCampo GrandeMSBrasil

Objective:To evaluate parasitemia by qPCR in patients undergoing etiological treatment and followed in a Brazilian reference ***:Parasite load was quantified by qPCR in 32 participants with chronic Chagas disease who were treated with *** analyses were performed before and after the treatment and parasite loads were compared prior and 12/18 months post the ***:Thirty-two participants were recruited and treated with benznidazole,and 20 were *** events(AE)were observed in 22 out of 29 participants that had safety data(76%),and dermatological alterations were the most frequently observed *** the 20 participants analyzed,13 and 7 completed 12 and 18 months follow-up after the treatment,respectively.12 Months after the final treatment,trypanosoma cruzi was detectable in 3 patients by qPCR;18 months after the final treatment,trypanosoma cruzi was detectable per qPCR in 4 of the 7 ***,between 12 and 18 months,7 participants of the 20 initial follow-up cases showed positive qPCR,indicating treatment ***:qPCR can be used as an alternative method for evaluating the effectiveness of the etiological treatment of CD,and can be applied to analyze early therapeutic *** study showed that benznidazole therapy had limited effectiveness in treating chronic CD patients,thus emphasizing the importance of conducting continued research for developing more effective therapies and diagnosis for CD.

关键词： trypanosoma cruzi Chagas disease Antitrypanosomal therapy Benznidazole qPCR Therapeutic failure

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Community‑based screening of Chagas disease among Latin American migrants in a non‑endemic country: an observational study

引用

Infectious Diseases of Poverty 2021年第5期10卷 14-27页

作者： Violeta Ramos‑Sesma Miriam Navarro Jara Llenas‑García Concepción Gil‑Anguita Diego Torrus‑Tendero Philip Wikman‑Jorgensen María García‑López Concepción Amador‑Prous María‑Paz Ventero‑Martín Pedro Guevara‑Hernández Ana Garijo‑Saiz Ares Sanchez‑Sanchez Cristina Bernal‑Alcaraz Ana‑Isabel Pujades‑Tarraga Roser Muñoz‑Perez María Flores‑Chávez José‑Manuel Ramos‑Rincón Internal Medicine Service HLA Inmaculada HospitalGranadaSpain Public Health Science History and Gynecology DepartmentUniversidad Miguel Hernández de ElcheAlicanteSpain Epidemiology Unit Public Health Center of Elche AlicanteSpain Internal Medicine Department Hospital Vega Baja de Orihuela(AlicanteSpain)-Foundation for the Promotion of Health and Biomedical Research of the Valencia Region(FISABIO)AlicanteSpain Clinical Medicine Department University Miguel Hernández of ElcheSant Joan d’AlacantSpain Internal Medicine Department Hospital Marina BaixaLa Vila Joiosa(AlicanteSpain)-FISABIOAlicanteSpain Internal Medicine Department General University Hospital of Alicante–Biomedical and Health Research Institute of Alicante(ISABIAL)AlicanteSpain Parasitology Area University Miguel Hernández of ElcheSant Joan d’AlacantSpain Internal Medicine Department University Hospital of Sant Joan(Sant Joan d’AlacantSpain)–FISABIOAlicanteSpain Microbiology Service General University Hospital of Alicante–ISABIALAlicanteSpain Pediatric Department General University Hospital of Alicante–ISABIALAlicanteSpain Digestive Service General University Hospital of Alicante–ISABIALAlicanteSpain Reference and Research Laboratory in Parasitology National Center of Microbiology/Mundo Sano FoundationMadridSpain

Background:Chagas disease is a parasitic disease endemic to Latin America,but it has become a disease of global concern due to migration *** carriers may host the parasite for years,without knowing they are *** aim of this study is to assess prevalence of Chagas disease and evaluate the participants’level of knowl‑edge between Latin American migrants attending a community-based screening ***:Three community-based campaigns were performed in Alicante(Spain)in 2016,2017 and 2018,including educational chats and blood tests for trypanosoma cruzi *** completed a questionnaire assessing knowledge about the mechanisms of transmission,disease presentation,diagnosis,and *** seroposi‑tive for *** underwent diagnostic confrmation by two diferent *** were analyzed by multivariable logistic regression and expressed as adjusted odds ratios(aORs),adjusting for age,sex,and time in ***:A total of 596 participants were included in the study;17%were aged under 18 *** in adults was 11%[54/496;95%confdence interval(CI):8.3–14.5%]versus 0%among *** but one case were in *** was independently associated with having been born in Bolivia(aOR:102,95%CI:13–781)and a primary school-level education(aOR:2.40,95%CI:1.14–5.06).Of 54 people diagnosed with Chagas disease(most of whom were asymptomatic),42(77.7%)returned to the clinic at least once,and 24(44.4%)received *** analysis showed that coming from Argentina(aOR:13,95%CI:1.61–1188)or Bolivia(aOR:1.90,95%CI:1.19–3.39)and having received information about Chagas disease in Spain(aOR:4.63,95%CI:2.54–8.97)were associ‑ated with a good level of knowledge on the *** primary level studies(aOR:0.59,95%CI:0.34–0.98)and coming from Ecuador(aOR:4.63,95%CI:2.52–847)were independently associated with a lower level of ***:Community-based interventions are a good strategy for diagnosi

关键词： Chagas disease trypanosoma cruzi Knowledge Community-based intervention Migrant Early diagnosis Screening

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：