A5031939941- Vector-borne infectious diseases
- Viral Infections and Vectors
- Vector-Borne Animal Diseases
- Trypanosoma species research and implications
- Dermatological diseases and infestations
- Helminth infection and control
- Mosquito-borne diseases and control
- Hepatitis B Virus Studies
- Research on Leishmaniasis Studies
- Hepatitis C virus research
- Liver Disease Diagnosis and Treatment
- Insect and Pesticide Research
- Insect symbiosis and bacterial influences
- Rabies epidemiology and control
- Herpesvirus Infections and Treatments
- Plant Pathogens and Fungal Diseases
- Corporeality, Perception, and Education
- Studies on Chitinases and Chitosanases
- Rabbits: Nutrition, Reproduction, Health
- Toxoplasma gondii Research Studies
- Leptospirosis research and findings
- Synthesis of Organic Compounds
- Evasion and Academic Success Factors
- Synthesis and biological activity
- Cytomegalovirus and herpesvirus research
Universidade Federal Rural do Rio de Janeiro
2013-2024
Departamento de Epidemiología
2018-2020
Universidade Federal do Rio Grande do Sul
2006-2019
Universidade São Judas Tadeu
2015
Hospital de Clínicas da Unicamp
2004
Universidade Federal de Viçosa
2003
Universidade Estadual de Campinas (UNICAMP)
2003
Anaplasma phagocytophilum is an emerging pathogen of humans, dogs and other animals, it transmitted by ixodid ticks. The objective the current study was a) detect A. in ticks using real-time Polymerase Chain Reaction (qPCR); b) Determine important variables associated to host, environment potential tick vectors that are related presence domiciled Rio de Janeiro, Brazil. We tested blood samples from 398 235 ticks, including 194 Rhipicephalus sanguineus sensu lato, 15 Amblyomma cajennense, 8...
The aim of this study was to detect Theileria equi (Laveran 1901) DNA in horses and ticks using real-time PCR list the factors associated with infection animals located Seropedica Petropolis municipalities state Rio de Janeiro. We tested blood samples from 314 300 ticks, including 191 Amblyomma cajennense, 104 Dermacentor nitens, 5 Ixodida larvae. Factors inherent horse, ownership, animal management were obtained an epidemiological questionnaire evaluated association presence T. animals....
Occult hepatitis B virus (HBV) infections have been identified in patients with chronic C (HCV) infection, although the clinical relevance of occult HBV infection remains controversial. We searched for serum DNA 106 HBsAg negative/anti-HBc positive HCV and 150 blood donors positive/anti-HCV negative (control group) by nested-PCR. genotyping was done 98 percutaneous needle liver biopsies were performed 59 patients. Fifty-two treated interferon alone (n=4) or combined ribavirin (n=48) during...
Anaplasma platys is an obligate intracellular bacterium that primarily affects dogs, but it can also infect humans. Our study aimed to standardize a quantitative real-time (q)PCR method using the citrate synthase gene ( gltA) as specific target for A. detection in naturally infected dogs. Primers gltA84F and gltA84R) probe (PLATYSp) were designed amplify 84-bp fragment based on gltA sequences of available GenBank. A total 186 dog blood samples originating from Brazilian state Rio de Janeiro...
The present study aimed to characterize the importance of Anaplasma marginale, Babesia bovis and bigemina in genesis cattle tick fever (CTF) among dairy calves northwest Minas Gerais, Brazil. Blood samples from 300 were collected, followed by DNA extraction nested PCR using oligonucleotide primers amplify fragments semi-nested for msp5 gene (A. marginale), sbp-4 (B. bovis) rap-1a bigemina) Among examined calves, prevalence A. marginale was 55.6% (n=167/300), B. 4.0% (n=12/300) 15.3%...
With the use of PCR, we searched for hepatitis B virus (HBV) DNA in serum samples from 415 HBsAg-negative, anti-HBc-positive patients: 150 were blood donors, 106 had only C (HCV) infection, and 159 human immunodeficiency (HIV) infection (of which 88 HCV positive 71 negative). HBV was detected 4% 3.4% HIV- HCV-positive patients, 24% patients.
This study evaluated factors associated with the frequency ofLeishmania spp. antibodies in dogs residing Itaguai micro-region, State of Rio de Janeiro, Brazil. Blood samples were collected from 524 dogs. The serum submitted to indirect fluorescent antibody test (IFAT) and enzyme-linked immunosorbent assay (ELISA) forLeishmania seropositive was 28.24% (n = 148) among three municipalities within that region, highest (p < 0.05) observed Seropedica (59.46%), followed by (29.05%) Mangaratiba...
Equine piroplasmosis stands out among the diseases that affect Equidae in Brazil and world. It is caused by protozoa Theileria equi Babesia caballi. The objective of present study was to carry molecular characterization T. using equine blood samples collected 5 geographic regions Brazil. Samples from all over country were tested for presence real-time PCR. 18S rRNA sequences (∼1,600 bp) obtained 23 taken naturally infected horses characterized sequencing analyzed identify genotypes possible...
The scope of Lewis acid-promoted cyclodehydratation reactions between anthranilonitrile and several ketones, to afford tacrine its derivatives, was expanded include the use various metal chloride salts not reported in literature. ability acids effectively promote cyclohexanone as ketone found be following order: InCl3 > AlCl3 ~ BF3.Et2O FeCl3 BiCl3 SbCl3 SnCl2.2H2O. were performed under both solvent solvent-free conditions good excellent yields. Other screened, such RuCl3, CeCl3, NiCl2,...
SUMMARY The aim of the present study was to analyze status American Tegumentary Leishmaniasis (ATL) in state Rio de Janeiro, from 2004 2013, through its spatiotemporal distribution. We also described variables considered relevant epidemiology disease, such as clinical form, gender, ethnic group, age and progression disease. This is a descriptive study, which used notified secondary data Brazilian Information System Notifiable Diseases (SINAN), Ministry Health, Brazil, regarding confirmed...
The objective of this study was to evaluate factors associated with infestation by Amblyomma cajennense on horses in two microregions the state Rio de Janeiro. Horses 62 farms municipalities Itaguaí and Serrana were evaluated between January May 2009. animals examined determine presence ticks level. animals' rearing management assessed each farm property using an epidemiological questionnaire. Out 635 evaluated, 41.6% infested A. cajennense. It observed that low-altitude regions (OR=3.69;...
Abstract This study aims to report the presence of Neorickettsia risticii DNA in blood samples from naturally infected horses Rio de Janeiro, provide clinicopathological findings related infection, and phylogenetic diversity 16S rDNA N. order evaluate its heterogeneity. Real-time quantitative polymerase chain reaction (qPCR) was performed investigate collected (n = 187). Five positive were found molecular screening. Hypoalbuminemia high levels creatine kinase lactate dehydrogenase...
Abstract Background Canine monocytic ehrlichiosis (CME) is caused by the tick-borne pathogen Ehrlichia canis , an obligate intracellular Gram-negative bacterium of family Anaplasmataceae with tropism for canine monocytes and macrophages. The trp36 gene, which encodes major immunoreactive protein TRP36 in E. has been successfully used to characterize genetic diversity this different regions world. Based on sequence analysis, four genogroups, United States (US), Taiwan (TWN), Brazil (BR) Costa...