A5043233381- Toxoplasma gondii Research Studies
- Herpesvirus Infections and Treatments
- Parasitic Infections and Diagnostics
- Cytomegalovirus and herpesvirus research
- Rabies epidemiology and control
- Parasite Biology and Host Interactions
- Helminth infection and control
- T-cell and Retrovirus Studies
- Amoebic Infections and Treatments
- Parasites and Host Interactions
- Science and Education Research
- Mosquito-borne diseases and control
- Research on Leishmaniasis Studies
- Dermatological diseases and infestations
- Pediatric health and respiratory diseases
- Parasitic infections in humans and animals
- Parvovirus B19 Infection Studies
- Vector-borne infectious diseases
- Sex work and related issues
- Bartonella species infections research
- Zoonotic diseases and public health
- Trypanosoma species research and implications
- Steroid Chemistry and Biochemistry
- Wildlife Ecology and Conservation
- Immune Cell Function and Interaction
Fundação Oswaldo Cruz
2016-2025
Faculdades Oswaldo Cruz
2010-2023
Fundação Instituto de Pesca do Estado do Rio de Janeiro
2013
International Olive Council
2013
Universidade Estadual Paulista (Unesp)
2013
Serviço Autônomo de Água e Esgoto de Jaboticabal
2009
Universidade Federal Rural do Rio de Janeiro
2006-2009
Instituto Evandro Chagas
2009
Fundação de Estudo e Pesquisa em Medicina Veterinária e Zootecnia
2008
Universidade Federal do Espírito Santo
2006
Serological screening and evaluation of exposure factors for Toxoplasma gondii transmission were conducted in 2126 pregnant women from southern Brazil. Specific antibodies against presented by 74.5% (n=1583) the evaluated. Contact with soil was found to be major factor infection.
Abstract Balantidium coli is a protozoon that can cause dysentery in humans, pigs and nonhuman primates, with zoonotic potential. In the literature, there still little information on effectiveness of different laboratory techniques for diagnosing this disease. This study compared evaluated performance Lutz, modified Ritchie, Faust, Sheather direct examination detecting cysts protozoon. Between 2012 2014, 1905 fecal samples were collected from captive animals state Rio de Janeiro. Of these,...
Abstract Background Concerning the infection of humans by T. gondii, limited efforts have been directed to elucidation role horizontal transmission between hosts. One main routes from animals occurs through ingestion raw or insufficiently cooked meat. However, even though detection gondii in meat constitutes an important short-term measure, control strategies can only be accomplished a deeper understanding epidemiology toxoplasmosis. The present study aimed investigate seroprevalence...
Purpose To ascertain the clinical features and visual outcome of toxoplasma retinochoroiditis in a large series cases. Subjects Methods Two hundred thirty subjects diagnosed with active were prospectively followed for periods ranging from 269 to 1976 days. All patients presented positive IgG T. gondii serology at beginning study received standardized drug treatment toxoplasmosis, both first episode subsequent recurrences. Results The group involved 118 (51.3%) men 112 (48.7%) women, ages 14...
Introduction To determine the prevalence of immunoglobulin G (IgG) and M (IgM) anti-Toxoplasma gondii antibodies among pregnant postpartum women attended within public healthcare system in Niterói, State Rio de Janeiro, to detect possible exposure factors associated with T. infection this population. Methods IgM IgG anti-T. were investigated 276 124 by using indirect immunofluorescence (IFAT) immunoenzymatic assay (ELISA) techniques. The participants selected convenience sampling. All these...
The prevalence of Toxoplasma gondii in indigenous Brazilian tribes with different degrees acculturation was studied the Enawenê-Nawê, an isolated tribe, state Mato Grosso, Waiãpi, intermittent non-Indian contacts, Amapa, and Tiriyó, constant Para. An IgG-enzyme-linked immunosorbent assay (IgG-ELISA) or IgG/IgM-indirect immunofluorescence antibody (IFA) were performed for detection antibodies to T. 2000-2001. Both assays showed that Tiriyó had lowest crude seroprevalence (55.6%), Enawené-Nawé...
The goal of this survey was to estimate the seroprevalence Toxoplasma gondii infection in Iauareté, a multiethnic Indian community upper Rio Negro basin. We carried out cross-sectional (n = 260), order obtain serum samples and demographic data. sample randomly selected, by family conglomerate analysis. Serodiagnosis performed an enzyme-linked immunosorbent assay indirect immunofluorescence. Prevalence reactivity 73.5% (191/260), being higher older-age groups, reaching 95.7% (44/46) group...
Toxoplasmosis is a worldwide zoonosis that generally produces an asymptomatic infection. In some cases, however, toxoplasmosis infection can lead to ocular damage. The immune system has crucial role in both the course of and evolution disease. particular, IFN-³ plays important resistance toxoplasmosis. Polymorphisms genes encoding cytokines have been shown association with susceptibility parasitic diseases. aim this work was analyse occurrence polymorphisms gene (+874T/A) among Toxoplasma...
A população estudada foi composta por 2.126 gestantes atendidas em unidades do Sistema Único de Saúde da região noroeste Estado Rio Grande Sul. Após o screening sorológico inicial ocorreu acompanhamento das gestantes, durante pré-natal, e seus bebês. Foram realizadas dosagens IgG, IgM, IgA, Avidez inoculação camundongos, PCR coleta placenta cordões umbilicais para realizar a técnica imuno-histoquímica além avaliações clínicas. Das avaliadas, 74,5% eram IgG reagentes 3,6% IgM reagentes. Nas...
ABSTRACT The Toxoplasma gondii rhoptry protein Rop2 was expressed in Escherichia coli as a fusion containing 44 kDa of the 55-kDa mature Rop2, supplied with six histidyl residues at N-terminal end (Rop2 196–561 ). Humoral response during infection humans analyzed by immunoglobulin G (IgG), IgA, and IgM enzyme-linked immunosorbent assay antigen substrate. sera were divided according to T. -specific serological tests (IgG, or indirect immunofluorescence IgA agglutination assay) group A (IgG +...
Toxoplasmosis is a zoonotic disease caused by the protozoan Toxoplasma gondii. The aim of present study was to determine occurrence and identify risk factors associated with transmission T. gondii chickens raised in different systems (free-ranged confined) produce eggs or meat. 810 animals were allocated two experimental groups according production system purpose: 460 broiler (Group 1) 350 layer 2). In order analyze possible involved infection chickens, an epidemiological questionnaire...
Toxoplasma gondii is a protozoan with worldwide distribution, in warm-blood animals, including humans. Local conditions and environmental disturbances may influence transmission dynamics of zoonotic agent. This study evaluates the epidemiology T. based on toxoplasmosis prevalence two populations cats living distinct urbanization Rio de Janeiro, Brazil. Among 372 domestic sampled, 265 were from public shelter located downtown 107 relatively preserved wild environment residential area. Sera...
The increasingly urban nature of the population has led many people to choose independent pets, such as cats. This situation also made it possible for these animals be abandoned, thus increasing numbers cats on streets and in shelters. These can act a source infection other hosts. Between 2014 2015, frequency gastrointestinal parasites captive stray municipality Rio de Janeiro was analyzed. Ninety-one fecal samples were collected from 172 Centrifugal sedimentation flotation techniques used....
Abstract Background Non-invasive sampling through faecal collection is one of the most cost-effective alternatives for monitoring free-living wild mammals, as it provides information on animal taxonomy well dynamics gastrointestinal parasites that potentially infect these animals. In this context, study aimed to perform an epidemiological survey using non-invasive samples from carnivores and artiodactyls identified by stool macroscopy, guard hair morphology DNA sequencing in Itatiaia...
Toxoplasma gondii is a highly prevalent zoonotic parasite in Brazil capable of infecting mammals and birds. The increase the urban populations pets narrowing human-animal relationship can facilitate transmission important public health zoonoses, such as toxoplasmosis. This study aimed to evaluate frequency spatial distribution T. infection its risk factors domiciled dogs cats attended at Jorge Vaitsman Institute, Rio de Janeiro. Serum samples from 400 272 were evaluated by an indirect...
Intestinal protozoa, which can be asymptomatic or cause diarrhea, dysentery and even death, are among the main agents that affect nonhuman primates (NHPs) kept under human care. Nevertheless, information on molecular morphometric profiles of parabasilids in Neotropics is still scarce. In this context, objective study was to isolate Parabasalia protozoa detected feces NHPs their keepers Pavlova TYSGM9 media characterize isolates by biology morphometry. Fecal samples from five Brazilian...
is a zoonotic parasite with global distribution capable of infecting homeothermic animals. Transmission protozoan to humans includes ingestion water and raw food contaminated sporulated oocysts, or undercooked meat tissue cysts, tachyzoites' transplacental transmission. Fresh goat milk intake has already been linked human toxoplasmosis outbreaks, but little known about the infectious potential this biological sample. Accordingly, aim present study assess survival infectivity
Parasitic infections in non-human primates (NHPs) kept ex situ can be caused by zoonotic protists like Balantioides coli and Entamoeba histolytica. In Brazil, little is known about these neotropical species. This study aimed to identify Amoebozoa Ciliophora groups fecal samples through vitro isolation molecular analysis, mapping their distribution Brazil. Among 511 NHP 74 handler's samples, were found 61 (11.9%) 6 (1.2%). Amoebic cysts present 12 (16.2%) human samples. Iodamoeba sp. from S....
A diverse group of professionals gathered in Brasília for the VI Brazilian Symposium on Toxoplasmosis and III International from October 17 to 19, 2023. Guided by ‘One Health’ concept, event addressed toxoplasmosis its human, animal, environmental dimensions. Participants discussed strategies improve prevention, diagnosis, treatment disease Brazil, also emphasizing a Pan-American cooperation. The resulting document, Letter: Proposal Control Brazil with Multidisciplinary Approach Cooperation...