Consulta: subjectFacets:"Schistosomiasis"
Registros recuperados: 22
Data/hora: 01/06/2024 05:38:10

Compatibility Polymorphism Based on Long-Term Host-Parasite Relationships: Cross Talking Between Biomphalaria glabrata and the Trematode Schistosoma mansoni From Endemic Areas in Brazil
Provedor de dados: 5
Autores: Lima, Mariana G.; Montresor, Lângia C.; Pontes, Joana; Augusto, Ronaldo De C.; Silva, Jairo Pinheiro Da; Thiengo, Silvana C.
Sympatric snail populations have been kept in the laboratory since the isolation of the parasite from the field. To evaluate the influence of the intermediate host in the infectivity of S. mansoni, this allopatric strain was compared to two sympatric strains, from different geographical origins, and with different time of maintenance in the laboratory. Snail–trematode compatibility was accessed for a total of nine possible combinations (three snail populations, three schistosome strains), using different charges of parasite: 1, 5, 10, and 15 miracidia/snail. Each S. mansoni strain was characterized according to its infectivity phenotype that reflects the efficiency of their infection mechanism and all B. glabrata populations were characterized according to...
Tipo: Text
Palavras-chave: Snail-trematode; Host-parasite; Interaction; Compatible; Incompatible; Infectivity; Resistance; Schistosomiasis.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00489/60084/63419.pdf

Phytochemical Molluscicides and Schistosomiasis: What We Know and What We Still Need to Learn
Provedor de dados: 5
Autores: De Carvalho Augusto, Ronaldo; Correa De Mello-silva, Clelia Christina.
Worldwide schistosomiasis remains a serious public health problem with approximately 67 million people infected and 200 million at risk of infection from inhabiting or transiting endemically active regions. Africa, South America, the Caribbean, and the Middle East are the main transmission regions of Schistosoma mansoni. The fight against transmission through the use of molluscicides is not recent and has been advocated as the only activity with the possibility of interruption of transmission in small, epidemiologically active outbreaks. Euphorbia milii var. hislopii (syn. splendens) (Des Moulins, 1826) is the most promising for use in official schistosomiasis control programs according to the WHO. In this review, we show that an understanding of some how...
Tipo: Text
Palavras-chave: Schistosomiasis; Molluscicide; Control programs; Transmission control.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00660/77213/78690.pdf

Application of a Genus-Specific LAMP Assay for Schistosome Species to Detect Schistosoma haematobium x Schistosoma bovis Hybrids
Provedor de dados: 5
Autores: Crego-vicente, Beatriz; Fernández-soto, Pedro; Febrer-sendra, Begoña; García-bernalt Diego, Juan; Boissier, Jérôme; Angora, Etienne K.; Oleaga, Ana; Muro, Antonio.
Schistosomiasis is a disease of great medical and veterinary importance in tropical and subtropical regions caused by different species of parasitic flatworms of the genus Schistosoma. The emergence of natural hybrids of schistosomes indicate the risk of possible infection to humans and their zoonotic potential, specifically for Schistosoma haematobium and S. bovis. Hybrid schistosomes have the potential to replace existing species, generate new resistances, pathologies and extending host ranges. Hybrids may also confuse the serological, molecular and parasitological diagnosis. Currently, LAMP technology based on detection of nucleic acids is used for detection of many agents, including schistosomes. Here, we evaluate our previously developed...
Tipo: Text
Palavras-chave: LAMP; Schistosomiasis; Schistosome hybrids; Schistosoma haematobium; Schistosoma bovis; Molecular diagnosis; Species-specific LAMP; Genus-specific LAMP.
Ano: 2021
URL: https://archimer.ifremer.fr/doc/00686/79840/82659.pdf

Environmental DNA for detecting Bulinus truncatus : A new environmental surveillance tool for schistosomiasis emergence risk assessment
Provedor de dados: 5
Autores: Mulero, Stephen; Boissier, Jérôme; Allienne, Jean‐françois; Quilichini, Yann; Foata, Joséphine; Pointier, Jean‐pierre; Rey, Olivier.
Under ongoing climate changes, the development of large‐scale monitoring tools for assessing the risk of disease emergence constitutes an urging challenge. This is particularly the case for snail‐borne diseases such as the urogenital bilharziasis that emerged in Corsica and threat European countries. The expansion of this tropical disease mainly relies on the local presence of competent snail hosts such as Bulinus truncatus. Unfortunately, very little is known about the actual repartition of freshwater snails worldwide which makes new emergences difficult to predict. In this study, we developed two ready‐to‐use environmental DNA‐based methods for assessing the distribution of B. truncatus from water samples collected in the field. We used two approaches, a...
Tipo: Text
Palavras-chave: Bulinus truncatus; Corsica; DdPCR; Environmental DNA; Environmental monitoring; QPCR; Schistosomiasis.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00593/70554/68723.pdf

Alkoxyamines Designed as Potential Drugs against Plasmodium and Schistosoma Parasites
Provedor de dados: 5
Autores: Reyser, Thibaud; To, Tung H.; Egwu, Chinedu; Paloque, Lucie; Nguyen, Michel; Hamouy, Alexandre; Stigliani, Jean-luc; Bijani, Christian; Augereau, Jean-michel; Joly, Jean-patrick; Portela, Julien; Havot, Jeffrey; Marque, Sylvain R. A.; Boissier, Jérôme; Robert, Anne; Benoit-vical, Françoise; Audran, Gérard.
Malaria and schistosomiasis are major infectious causes of morbidity and mortality in the tropical and sub-tropical areas. Due to the widespread drug resistance of the parasites, the availability of new efficient and affordable drugs for these endemic pathologies is now a critical public health issue. In this study, we report the design, the synthesis and the preliminary biological evaluation of a series of alkoxyamine derivatives as potential drugs against Plasmodium and Schistosoma parasites. The compounds (RS/SR)-2F, (RR/SS)-2F, and 8F, having IC50 values in nanomolar range against drug-resistant P. falciparum strains, but also five other alkoxyamines, inducing the death of all adult worms of S. mansoni in only 1 h, can be considered as interesting...
Tipo: Text
Palavras-chave: Alkoxyamine; Alkylation; Heme; Malaria; Radical chemistry; Schistosomiasis.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00648/76024/76920.pdf

Prevalence and Risk Factors for Schistosomiasis among Schoolchildren in two Settings of Côte d’Ivoire
Provedor de dados: 5
Autores: Angora, Etienne K.; Boissier, Jérôme; Menan, Hervé; Rey, Olivier; Tuo, Karim; Touré, Andre O.; Coulibaly, Jean T.; Méité, Aboulaye; Raso, Giovanna; N’goran, Eliézer K.; Utzinger, Jürg; Balmer, Oliver.
Schistosomiasis is a parasitic disease affecting more than 250 million people, primarily in sub-Saharan Africa. In Côte d’Ivoire both Schistosoma haematobium (causing urogenital schistosomiasis) and Schistosoma mansoni (causing intestinal schistosomiasis) co-exist. This study aimed to determine the prevalence of S. haematobium and S. mansoni and to identify risk factors among schoolchildren in the western and southern parts of Côte d’Ivoire. From January to April 2018, a cross-sectional study was carried out including 1187 schoolchildren aged 5–14 years. Urine samples were examined by a filtration method to identify and count S. haematobium eggs, while stool samples were subjected to duplicate Kato-Katz thick smears to quantify eggs of S. mansoni and...
Tipo: Text
Palavras-chave: Côte d’Ivoire; Prevalence; Risk factors; Schistosoma haematobium; Schistosoma mansoni; Schistosomiasis.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00508/61953/66043.pdf

Schistosomiasis Vector Snails and Their Microbiota Display a Phylosymbiosis Pattern
Provedor de dados: 5
Autores: Huot, Camille; Clerissi, Camille; Gourbal, Benjamin; Galinier, Richard; Duval, David; Toulza, Eve.
Planorbidae snails are the intermediate host for the trematode parasite of the Schistosoma genus, which is responsible for schistosomiasis, a disease that affects both humans and cattle. The microbiota for Schistosoma has already been described as having an effect on host/parasite interactions, specifically through immunological interactions. Here, we sought to characterize the microbiota composition of seven Planorbidae species and strains. Individual snail microbiota was determined using 16S ribosomal DNA amplicon sequencing. The bacterial composition was highly specific to the host strain with limited interindividual variation. In addition, it displayed complete congruence with host phylogeny, revealing a phylosymbiosis pattern. These results were...
Tipo: Text
Palavras-chave: Microbiota; Phylosymbiosis; Metabarcoding; Planorbid snails; Tripartite interactions; Schistosomiasis.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00606/71807/70295.pdf

Measuring Histone Modifications in the Human Parasite Schistosoma mansoni.
Provedor de dados: 5
Autores: De Carvalho Augusto, Ronaldo; Roquis, David; Al Picard, Marion; Chaparro, Christian; Cosseau, Celine; Grunau, Christoph.
DNA-binding proteins play critical roles in many major processes such as development and sexual biology of Schistosoma mansoni and are important for the pathogenesis of schistosomiasis. Chromatin immunoprecipitation (ChIP) experiments followed by sequencing (ChIP-seq) are useful to characterize the association of genomic regions with posttranslational chemical modifications of histone proteins. Challenges in the standard ChIP protocol have motivated recent enhancements in this approach, such as reducing the number of cells required and increasing the resolution. In this chapter, we describe the latest advances made by our group in the ChIP methods to improve the standard ChIP protocol to reduce the number of input cells required and to increase the...
Tipo: Text
Palavras-chave: Native chromatin immunoprecipitation; ChIPmentation; Histone modifications; Schistosomiasis; Trematode; Development.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00653/76553/77671.pdf

Effects of the Environment on Developmental Plasticity and Infection Success of Schistosoma Parasites - An Epigenetic Perspective
Provedor de dados: 5
Autores: De Carvalho Augusto, Ronaldo; Duval, David; Grunau, Christoph.
Evidence of how environmental cues affect the phenotypes of, and compatibility between Schistosoma mansoni and their hosts come from studies in environmental parasitology and research on host diet and chemotherapeutic treatment. Schistosomes deal with a multitude of signals from the water environment as well as cues that come from their hosts, particularly in response to molecules that serve to recognize and destroy them, i.e., those molecules that arise from their hosts' immune systems. These interactions shape, not only the parasite's morphology, metabolism and behavior in the short-term, but also their infection success and development into different stage-specific phenotypes later in their life cycle, through the modification of the parasite's...
Tipo: Text
Palavras-chave: Schistosomiasis; Environmental cues; Inheritance systems; Imune response; Host-para site interactions.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00508/61941/66028.pdf

Persistent establishment of a tropical disease in Europe: the preadaptation of schistosomes to overwinter
Provedor de dados: 5
Autores: Mulero, Stephen; Rey, Olivier; Arancibia, Nathalie; Mas-coma, Santiago; Boissier, Jerome.
BackgroundGlobal changes promote the spread of infectious diseases worldwide. In this context, tropical urogenital schistosomiasis is now permanently established in Corsica since its first emergence in 2013. The local persistence of the tropical pathogens (schistosomes) responsible for urogenital schistosomiasis at such latitudes might be explained by (i) the presence of its intermediate host, the snail Bulinus truncatus, (ii) the recurrent local reseeding of schistosomes by their vertebrate hosts (either human or animal) every summer, and/or (iii) the maintenance and survival of schistosomes within their snail hosts over winter.MethodsIn this study we conducted an ecological experiment to assess the ability of temperate and tropical schistosome strains to...
Tipo: Text
Palavras-chave: Schistosomiasis; Bulinus truncatus; Corsica; Persistence; Schistosoma haematobium; Temperature.
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00509/62088/66275.pdf

Baseline Mapping of Schistosomiasis and Soil Transmitted Helminthiasis in the Northern and Eastern Health Regions of Gabon, Central Africa: Recommendations for Preventive Chemotherapy
Provedor de dados: 5
Autores: Mintsa Nguema, Rodrigue; Mavoungou, Jacques F.; Ngou-milama, Krystina Mengue Me; Mamfoumbi, Modeste Mabicka; Koumba, Aubin A.; Lamine, Mariama Sani; Diarra, Abdoulaye; Asseko, Ghislaine Nkone; Mourou, Jean R.; Akotet, Marielle K. Bouyou; Mone, Helene; Mouahid, Gabriel; Atsame, Julienne.
In order to follow the Preventive Chemotherapy (PC) for the transmission control as recommended by WHO, Gabon initiated in 2014 the mapping of Schistosomiasis and Soil Transmitted Helminthiasis (STH). Here, we report the results of the Northern and Eastern health regions, representing a third of the land area and 12% of its total population. All nine departments of the two regions were surveyed and from each, five schools were examined with 50 schoolchildren per school. The parasitological examinations were realized using the filtration method for urine and the Kato-Katz technique for stool samples. Overall 2245 schoolchildren (1116 girls and 1129 boys), mean aged 11.28 +/- 0.04 years, were examined. Combined schistosomiasis and STH affected 1270 (56.6%)...
Tipo: Text
Palavras-chave: Schistosomiasis; Soil-transmitted-helminthiasis; Mapping; Preventive chemotherapy; Transmission control; Gabon; Central Africa.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00660/77212/78691.pdf

Schistosomiasis haematobia in Brazilian patients: clinical and renal functional evaluation with 99mTc-DTPA
Provedor de dados: 80
Autores: D’Almeida,J.; Maliska,C.; Pellegrini,P. M.; Penas,M. E.; Collares,R. A.; Cruz,M. G. A.
The present study was carried out at the Army Central Hospital, Rio de Janeiro, Brazil, from September 2000 to December 2001, employing diethylenetriamine penta-acetic acid labeled with technetium-99m (99mTc-DTPA) to evaluate the renal function of nineteen symptomatic patients infected with S. haematobium during a peace mission in Mozambique. Results evidenced that the most frequent clinical manifestations were hematuria (68.4%) and low back pain (68.4%) and 73.7% patients had altered dynamic renal scintigraphy expressed by an increase in the excretory phase independently of the symptoms duration; furthermore, none of them had mechanical obstructive pattern. Schistosoma haematobium glomerulopathy could be considered a pathological finding without...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Schistosomiasis; Schistosoma haematobium; Renal radionuclide imaging; Brazilian patients; 99mTc-DTPA.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000300010

Health impacts of small reservoirs in Burkina Faso.
Provedor de dados: 31
Autores: Boelee,   Eline; Cecchi,   Philippe; Kone,   Andre.
In Burkina Faso, at least 1,700 small reservoirs have been constructed, most of them during the last 30 years. Numerous and scattered, these beneficial multipurpose systems combine productive with domestic water uses. However, their environmental and health impacts remain insufficiently documented. This report combines data from different sources into syntheses and national maps, with a focus on water-related diseases. The mitigation of negative impacts requires an integrated approach to specifically identify the enhancing and limiting factors that influence environmental impacts and the transmission of diseases around reservoirs. Public awareness campaigns need to accompany the promotion of preventive and curative measures and the development of...
Tipo: Working or Discussion Paper
Palavras-chave: Reservoirs; Health hazards; River basins; Water resources development; Environmental effects; Waterborne diseases; Malaria; Schistosomiasis; Control methods; Water policy; Environmental Economics and Policy; Health Economics and Policy; Land Economics/Use; Resource /Energy Economics and Policy.
Ano: 2009
URL: http://purl.umn.edu/91869

Potential for shistosomiasis in a municipality of Rondônia, Brazilian Amazon
Provedor de dados: 36
Autores: PEREIRA,Adriany Duarte; PINTO,Pedro Luiz Silva; CAMARGO,Juliana de Souza Almeida Aranha; SOUZA,Juliana Bianca Rocha de; AMANTE,Carlos Antônio; SOUZA,Viviane Krominski Graça de; SIMONE,Luiz Ricardo Lopes de; CAMARGO,Luís Marcelo Aranha.
ABSTRACT Schistossomiasis is a parasitic disease, caused by helminths of the genus Schistosoma and transmitted in Brazil by snails of the genus Biomphalaria. The municipality of Ouro Preto do Oeste, Rondônia, in the Brazilian Amazon Region, has unusually registered more than 900 cases of schistosomiasis in the last 10 years. The aim of this study was to investigate de potential of transmission of schsitosomiasis in Ouro Preto do Oeste. A total of 1,196 people in a risk area for the disease transmission were requested to answer a clinical-epidemiological survey and to collect feces samples for examination. All the samples that underwent examination resulted negative for S. mansoni. Two hundred and sixty-eight snails were collected in the locality of Ouro...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Schistosomiasis; Amazon; Transmission.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672016000400377

Schistosome serine protease inhibitors: parasite defense or homeostasis?
Provedor de dados: 42
Autores: Quezada,Landys A. Lopez; McKerrow,James H.
Serpins are a structurally conserved family of macromolecular inhibitors found in numerous biological systems. The completion and annotation of the genomes of Schistosoma mansoni and Schistosoma japonicum has enabled the identification by phylogenetic analysis of two major serpin clades. S. mansoni shows a greater multiplicity of serpin genes, perhaps reflecting adaptation to infection of a human host. Putative targets of schistosome serpins can be predicted from the sequence of the reactive center loop (RCL). Schistosome serpins may play important roles in both post-translational regulation of schistosome-derived proteases, as well as parasite defense mechanisms against the action of host proteases.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Schistosomiasis; Inhibitor; Protease; Serpin; Genome.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652011000200025

The current distribution pattern of Biomphalaria tenagophila and Biomphalaria straminea in the northern and southern regions of the coastal fluvial plain in the state of São Paulo
Provedor de dados: 49
Autores: Palasio,Raquel Gardini Sanches; Casotti,Marcia Oliveira; Rodrigues,Thamiris Cassia; Menezes,Regiane Maria Tirone; Zanotti-Magalhaes,Eliana Maria; Tuan,Roseli.
We analyze the current distribution of snails from genus Biomphalaria in the north and south of the coastal fluvial plain in the state of São Paulo, which is part of a large coastal floodplain. Data from twenty-nine collection sites confirmed that the freshwater body in both regions is colonized by Biomphalaria tenagophila and Biomphalaria straminea, which are natural intermediate hosts of Schistosoma mansoni. The abundance of B. straminea in collection sites where only B. tenagophila had previously been recorded indicates the potential for B. straminea to expand in the region. While quantitative analysis of the number of specimens per species showed that local growth of B. tenagophila populations occurs during periods with little rainfall, there is a...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: B. tenagophila; B. straminea; Schistosomiasis; Climate change.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000300401

Concomitant prostatic schistosomiasis and sdenocarcinoma: case report and review
Provedor de dados: 55
Autores: Basílio-de-Oliveira,Carlos Alberto; Aquino,Armando; Simon,Eliane Francine; Eyer-Silva,Walter A.
The term schistosomiasis encompasses a group of infectious disorders caused by five species of the genus Schistosoma, a blood trematode of outstanding importance in tropical areas. Some of these disorders have long been associated with malignant neoplasia, the most striking association being between disease caused by Schistosoma haematobium, the predominant etiological agent of urinary schistosomiasis, and squamous cell carcinoma of the bladder, a relatively uncommon vesical cancer in non-endemic areas. Four cases of simultaneous adenocarcinoma and schistosomiasis of the prostate have been previously reported (S. haematobium in three and S. mansoni in one). We report a fifth case of concomitant adenocarcinoma and schistosomiasis of the prostate in a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adenocarcinoma; Prostate; Schistosomiasis.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702002000100007

Hepatitis E virus seroprevalence among schistosomiasis patients in Northeastern Brazil
Provedor de dados: 55
Autores: Passos-Castilho,Ana Maria; de Sena,Anne; Domingues,Ana Lucia Coutinho; Lopes-Neto,Edmundo Pessoa; Medeiros,Tibério Batista; Granato,Celso Francisco Hernandez; Ferraz,Maria Lúcia.
Abstract  Background Hepatitis E virus (HEV) can cause chronic infection with rapid progression to liver cirrhosis in immunocompromised patients. HEV seroprevalence in patients with Schistosoma mansoni in Brazil is unknown. We evaluated the prevalence of past or present HEV infection in schistosomiasis patients in Recife, Pernambuco, Brazil. A total of 80 patients with Schistosoma mansoni were consecutively enrolled in a cross-sectional study. Serum samples were tested for the presence of anti-HEV IgG antibodies by enzyme immunoassay (Wantai anti-HEV IgG, Beijing, China) and for the presence of HEV RNA using real time reverse transcriptase-polymerase chain reaction with primers targeting the HEV ORF2 and ORF3. Clinical and laboratory tests as well as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Epidemiology; Hepatitis E virus; Schistosomiasis; Seroprevalence.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702016000300007

Testicular schistosomiasis caused by Schistosoma mansoni: a case report from Brazil
Provedor de dados: 55
Autores: Lopes,Roberto Iglesias; Leite,Kátia Ramos; Prando,Décio; Lopes,Roberto Nicomedes.
Testicular schistosomiasis by Schistosoma mansoni is exceedingly rare, with only 11 cases reported in PubMed. We report a new case from Brazil. A 31-year-old man from the northeast region of the country presented with a 2 cm nodule in the right testis. Ultrasonography showed a well-delimited hypoechoic tumor, suggestive of a granulomatous lesion. Magnetic resonance imaging revealed an irregular tunica albuginea signal. A biopsy showed interstitial tissue with schistosome ova and granuloma formation. The nodule was excised, and the patient was treated with oxamniquine. He has remained symptom free for 10 years. A testicular nodule should raise suspicion of numerous pathologies, including schistosomiasis. Treatment should include therapy with oxamniquine or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Testis; Schistosomiasis; Orchiectomy.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000500015

Association between prostate cancer and schistosomiasis in young patients: a case report and literature review
Provedor de dados: 55
Autores: Bacelar,Albert; Castro,Larissa G.M.C.; Queiroz,Aristides Cheto de; Café,Eduardo.
This case report refers to a 47-year old patient with prostate cancer associated with schistosomiasis mansoni, who was submitted to radical prostatectomy. This is the third report published in the literature with respect to this association, and up to the present time it is still not known whether a cause and effect relationship exists between the two pathologies. The association between schistosomiasis and cancer has been well-documented in bladder cancer; however, there are no data yet proving the association of this disease with prostatic neoplasia. In this report, a third documented case of prostatic adenocarcinoma and schistosomiasis mansoni is described and a literature review is performed.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Prostate cancer; Schistosomiasis; Prostatectomy; Pathology.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000500014

Schistosoma mansoni: a rare cause of tubal infection
Provedor de dados: 55
Autores: Faria,CA; Conceição,JCJ; Valadares,TF; Rodrigues,B; Carneiro,L.
S. haematobium is an important cause of urinary schistosomiasis, and symptomatic female genital infection is a common gynecological finding in areas where S. haematobium is prevalent. On the other hand, genital manifestations of intestinal schistosomas as S. mansoni are not frequent or are misdiagnosed. A case of a 40-year-old woman with abnormal uterine bleeding and asymptomatic tubal infection by S. mansoni identified in histological examination is presented.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Schistosomiasis; S. mansoni; Complications.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000300015

IgE expression on the surface of B1 and B2 lymphocytes in experimental murine schistosomiasis
Provedor de dados: 56
Autores: Oliveira,F.L.; Aguiar,A.M.; Borojevic,R.; El-Cheikh,M.C.
In a previous study we monitored the distribution and phenotype expression of B1 cells during the evolution of experimental murine schistosomiasis mansoni and we proposed that the B1 cells were heterogeneous: a fraction which originated in the spleen and followed the migratory pathway to mesenteric ganglia, while the other was the resident peritoneal B1-cell pool. In the present study, we have addressed the question of whether these two B1-lymphocyte populations are involved in the production of the late Ig isotype IgE, which is present in high levels in schistosomal infection. Lymphocyte expression of surface markers and immunoglobulins were monitored by immunofluorescence flow cytometry. Both in the spleen and mesenteric ganglia, the B1 and B2 cells were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Schistosomiasis; B lymphocytes; Immunoglobulin switch.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000700006