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1.
Rev. bras. ter. intensiva ; 33(4): 583-591, out.-dez. 2021. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1357189

ABSTRACT

RESUMO Objetivo: Determinar a incidência cumulativa de falência aguda de órgão e internamento em unidade de terapia intensiva em pacientes oncológicos. Métodos: Estudo de coorte prospectivo de pacientes oncológicos adultos em tratamento sistêmico antineoplásico, internados de forma não programada. Resultados: Entre agosto de 2018 e fevereiro de 2019, 10.392 pacientes foram submetidos a tratamento sistêmico antineoplásico, sendo que 358 necessitaram de internamento hospitalar não programado e foram elegíveis para inclusão; por fim, 258 desses pacientes foram incluídos. A média de idade foi de 60,9 anos, e 50,9% eram do sexo masculino; 17,9% dos pacientes tinham câncer hematológico. O risco acumulado de falência de órgãos foi de 39,6% (IC95% 35 - 44) e o risco de internamento na unidade de terapia intensiva em pacientes com falência aguda de órgão foi de 15,0% (IC95% 12 - 18). À admissão em internamento, 62,1% dos pacientes foram considerados não elegíveis para terapia de substituição artificial de órgãos. O tempo mediano de seguimento foi de 9,5 meses. A mortalidade hospitalar foi de 17,5%, na unidade de terapia intensiva de 58,8%. A mediana de sobrevivência da coorte foi de 134 dias (IC95% 106 - 162). Na análise multivariada, a falência aguda de órgão se associou com a mortalidade aos 6 meses após a alta (hazard ratio: 1,6; IC95% 1,2 - 2,2). Conclusão: O risco de falência aguda de órgão em pacientes oncológicos admitidos para tratamento hospitalar não programado durante o tratamento sistémico foi de 39,6% e o risco de internamento em unidade de terapia intensiva foi de 15,0%. A falência aguda de órgão em pacientes oncológicos foi um fator de prognóstico independente para maior mortalidade intra-hospitalar e menor sobrevivência aos 6 meses após a alta.


ABSTRACT Objective: To ascertain the cumulative incidence of acute organ failure and intensive care unit admission in cancer patients. Methods: This was a single-center prospective cohort study of adult cancer patients admitted for unscheduled inpatient care while on systemic cancer treatment. Results: Between August 2018 and February 2019, 10,392 patients were on systemic treatment, 358 had unscheduled inpatient care and were eligible for inclusion, and 285 were included. The mean age was 60.9 years, 50.9% were male, and 17.9% of patients had hematologic cancers. The cumulative risk of acute organ failure was 39.6% (95%CI: 35 - 44), and that of intensive care unit admission among patients with acute organ failure was 15.0% (95%CI: 12 - 18). On admission, 62.1% of patients were considered not eligible for artificial organ replacement therapy. The median follow-up time was 9.5 months. Inpatient mortality was 17.5%, with an intensive care unit mortality rate of 58.8% and a median cohort survival of 134 days (95%CI: 106 - 162). In multivariate analysis, acute organ failure was associated with 6-month postdischarge mortality (HR 1.6; 95%CI: 1.2 - 2.2). Conclusion: The risk of acute organ failure in cancer patients admitted for unscheduled inpatient care while on systemic treatment was 39.6%, and the risk of intensive care unit admission was 15.0%. Acute organ failure in cancer patients was an independent poor prognostic factor for inpatient hospital mortality and 6-month survival.


Subject(s)
Humans , Male , Adult , Middle Aged , Aftercare , Neoplasms/complications , Neoplasms/therapy , Neoplasms/epidemiology , Patient Discharge , Prognosis , Prospective Studies , Retrospective Studies , Cohort Studies , Hospital Mortality , Intensive Care Units
2.
Rev. bras. enferm ; 73(3): e20180748, 2020. tab, graf
Article in English | LILACS-Express | LILACS, BDENF | ID: biblio-1092571

ABSTRACT

ABSTRACT Objectives: to analyze lawsuits brought by beneficiaries of health insurance operators. Methods: this was a cross-sectional descriptive study carried out in a large-capacity private health insurance operator using data collected by the company from 2012 to 2015. Results: ninety-six lawsuits were brought by 86 beneficiaries regarding medical procedures (38.5%), treatments (26.1%), examinations (14.6%), medications (9.4%), home care (6.2%), and other types of hospitalization (5.2%). The procedures with the highest number of lawsuits were percutaneous rhizotomy; chemotherapy; treatment-related positron-emission tomography scans; and for medications relative to antineoplastic and Hepatitis C treatment. Conclusions: the lawsuits were filed because of the operators' refusal to comply with items not established in contracts or not regulated and authorized by the Brazilian National Regulatory Agency for Private Health Insurance and Plans, refusals considered unfounded.


RESUMEN Objetivos: analizar las acciones judiciales iniciadas por beneficiarios de planes de salud de prepago. Métodos: estudio descriptivo, transversal, desarrollado en importante operadora de planes de salud de prepago, utilizando datos recopilados por la empresa entre 2015 y 2015. Resultados: fueron impulsadas 96 acciones judiciales por parte de 86 beneficiarios, referentes a procedimientos médicos (38,5%), tratamientos (26,1%), estudios (14,6%), medicación (9,4%), Home Care (6,2%) y 5,2% por otros tipos de internación. La mayoría de acciones por procedimientos correspondió a rizotomía percutánea; en tratamientos, a quimioterapia; en estudios, a tomografía por emisión de positrones; en medicamentos, a antineoplásicos y para tratar la hepatitis C. Conclusiones: motivaron las acciones judiciales interpuestas la negativa de la operadora de planes de salud a cubrir prestaciones no incluidas en el alcance del plan contratado por el beneficiario, así como asuntos no reglados y autorizados por la Agencia Nacional de Salud Complementaria, considerándose, en consecuencia, improcedentes.


RESUMO Objetivos: analisar as ações judiciais demandadas por beneficiários de uma operadora de plano de saúde. Métodos: estudo descritivo de corte transversal desenvolvido em uma operadora de plano privado de saúde de grande porte, utilizando dados compilados pela empresa no período de 2012 a 2015. Resultados: foram movidas 96 ações judiciais por 86 beneficiários, referentes a procedimentos médicos (38,5%), tratamentos (26,1%), exames (14,6%), medicamentos (9,4%), Home Care (6,2%) e 5,2% a outros tipos de internações. O maior número de ações dentre os procedimentos foi rizotomia percutânea; para tratamentos, a quimioterapia; exames solicitados de tomografia por emissão de pósitrons; para medicamentos, os antineoplásicos e para tratamento de Hepatite C. Conclusões: a razão para as demandas judiciais impetradas foi a negativa da operadora em atender os itens não pertencentes ao escopo do que foi contratado pelo beneficiário ou itens não regulamentados e autorizados pela Agência Nacional de Saúde Suplementar, portanto sendo consideradas improcedentes.

3.
Rev. Assoc. Med. Bras. (1992) ; 63(3): 224-228, Mar. 2017. tab, graf
Article in English | LILACS | ID: biblio-956436

ABSTRACT

Summary Introduction: Virus surveillance strategies and genetic characterization of human parvovirus B19 (B19V) are important tools for regional and global control of viral outbreak. In São Paulo, Brazil, we performed a study of B19V by monitoring the spread of this virus, which is an infectious agent and could be mistakenly reported as a rash and other types of infection. Method: Serum samples were subjected to enzyme immunoassay, real time polymerase chain reaction, and sequencing. Results: From the 462 patients with suspected cases of exanthematic infections, the results of the 164 serum samples were positive for B19V immunoglobulin M. Among these cases, there were 38 patients with erythema infections and B19-associated with other infections such as encephalitis, hydrops fetalis, chronic anemia, hematological malignancies. These samples were sequenced and identified as genotype 1. Conclusion: This study showed patients with infections caused by B19V and sequencing genotype 1. Continuous monitoring is necessary to detect all known genotypes, and the emergence of new genotypes of these viruses for case management in public health control activities.


Resumo Introdução: Estratégias de vigilância para o parvovírus humano B19 e caracterização genética são ferramentas importantes para o controle regional e global do surto viral. Em São Paulo, Brasil, foi realizado um estudo de parvovírus B19, monitorando a disseminação desse vírus, que é um agente infeccioso e poderia ser erroneamente relatado como uma erupção cutânea e outros tipos de infecções. Método: As amostras de soro foram submetidas ao ensaio imunoenzimático, PCR quantitativo em tempo real e sequenciamento. Resultados: Dos 462 pacientes com casos suspeitos de infecções exantemáticas, os resultados das 164 amostras de soro foram positivos para parvovírus B19 imunoglobulina M. Entre eles, 38 pacientes com eritema infeccioso apresentaram B19 associado com outras infecções, como encefalite, hidropisia fetal, anemia crônica, doenças hematológicas malignas. Essas amostras foram sequenciadas e identificadas como genótipo 1. Conclusão: Os pacientes foram infectados com parvovírus B19 e apresentaram genótipo 1. Monitoração contínua é necessária para detectar todos os genótipos conhecidos e o surgimento de novos genótipos para o controle de casos em saúde pública.


Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Child , Adolescent , Adult , Young Adult , Parvovirus B19, Human/isolation & purification , Parvovirus B19, Human/genetics , Erythema Infectiosum/virology , Genotype , Brazil , DNA, Viral/blood , Immunoglobulin G/blood , Immunoglobulin M/blood , Immunoassay , Hydrops Fetalis/virology , Population Surveillance , Erythema Infectiosum/blood , Reverse Transcriptase Polymerase Chain Reaction , Anemia/virology , Middle Aged , Antibodies, Viral/blood
4.
Mem. Inst. Oswaldo Cruz ; 110(6): 726-731, Sept. 2015. tab, graf
Article in English | LILACS | ID: lil-763099

ABSTRACT

The protective effect of infectious agents against allergic reactions has been thoroughly investigated. Current studies have demonstrated the ability of some helminths to modulate the immune response of infected hosts. The objective of the present study was to investigate the relationship between Toxocara canis infection and the development of an allergic response in mice immunised with ovalbumin (OVA). We determined the total and differential blood and bronchoalveolar lavage fluid cells using BALB/c mice as a model. To this end, the levels of interleukin (IL)-4, IL-5 and IL-10 and anti-OVA-IgE were measured using an ELISA. The inflammatory process in the lungs was observed using histology slides stained with haematoxylin and eosin. The results showed an increase in the total number of leukocytes and eosinophils in the blood of infected and immunised animals at 18 days after infection. We observed a slight lymphocytic inflammatory infiltrate in the portal space in all infected mice. Anti-OVA-IgE levels were detected in smaller proportions in the plasma of immunised and infected mice compared with mice that were only infected. Therefore, we concluded that T. canis potentiates inflammation in the lungs in response to OVA, although anti-OVA-IgE levels suggest a potential reduction of the inflammatory process through this mechanism.


Subject(s)
Animals , Bronchoalveolar Lavage Fluid/parasitology , Hypersensitivity/parasitology , Lung/immunology , Toxocara canis/immunology , Toxocariasis/immunology , Antibodies/blood , Biopsy , Enzyme-Linked Immunosorbent Assay , Eosinophils/parasitology , Immunoglobulin E/blood , Inflammation/physiopathology , Interleukin-10/blood , Interleukin-4/blood , Interleukin-5/blood , Leukocyte Count , Lung/pathology , Mice, Inbred BALB C , Ovalbumin/immunology , Toxocariasis/blood
5.
Mem. Inst. Oswaldo Cruz ; 110(4): 534-542, 09/06/2015. graf
Article in English | LILACS | ID: lil-748872

ABSTRACT

Hepatitis C virus (HCV) envelope protein 2 (E2) is involved in viral binding to host cells. The aim of this work was to produce recombinant E2B and E2Y HCV proteins in Escherichia coli and Pichia pastoris, respectively, and to study their interactions with low-density lipoprotein receptor (LDLr) and CD81 in human umbilical vein endothelial cells (HUVEC) and the ECV304 bladder carcinoma cell line. To investigate the effects of human LDL and differences in protein structure (glycosylated or not) on binding efficiency, the recombinant proteins were either associated or not associated with lipoproteins before being assayed. The immunoreactivity of the recombinant proteins was analysed using pooled serum samples that were either positive or negative for hepatitis C. The cells were immunophenotyped by LDLr and CD81 using flow cytometry. Binding and binding inhibition assays were performed in the presence of LDL, foetal bovine serum (FCS) and specific antibodies. The results revealed that binding was reduced in the absence of FCS, but that the addition of human LDL rescued and increased binding capacity. In HUVEC cells, the use of antibodies to block LDLr led to a significant reduction in the binding of E2B and E2Y. CD81 antibodies did not affect E2B and E2Y binding. In ECV304 cells, blocking LDLr and CD81 produced similar effects, but they were not as marked as those that were observed in HUVEC cells. In conclusion, recombinant HCV E2 is dependent on LDL for its ability to bind to LDLr in HUVEC and ECV304 cells. These findings are relevant because E2 acts to anchor HCV to host cells; therefore, high blood levels of LDL could enhance viral infectivity in chronic hepatitis C patients.


Subject(s)
Animals , Cattle , Humans , /physiology , Endothelial Cells/virology , Hepacivirus/immunology , Receptors, LDL/physiology , Viral Envelope Proteins/physiology , /immunology , Cell Line , Escherichia coli , Endothelial Cells/immunology , Flow Cytometry , Membrane Proteins , Pichia , Recombinant Proteins , Receptors, LDL/immunology
6.
Odonto (Säo Bernardo do Campo) ; 22(43/44): 83-92, jan.-dez.2014. ilus
Article in Portuguese | LILACS | ID: lil-790522

ABSTRACT

As primeiras radiografias digitais surgiram em 1987. Esta tecnologia é considerada um grande avanço, pois possibilita inúmeras vantagens sobre a radiografia tradicional, por exemplo, redução da dose de exposição aos raios-x, aumentando a segurança e a qualidade do procedimento, além de o custobenefício da radiografia digital ser melhor quando comparada à convencional. Revisão de literatura: As principais vantagens da radiografia digital comparada às radiografias tradicionais são: diminuição da dose de exposição, eliminação do processo químico de revelação/fixação, a possibilidade de manipulação das imagens, a obtenção de novas imagens sem a realização de novas tomadas radiográficas e menor desconforto para o paciente. Objetivos: Este trabalho tem como objetivo, revisar a literatura abordando as vantagens e desvantagens da radiografia digital comparada à radiografia convencional, bem como verificar sua aplicabilidade real na clínica odontológica. Conclusão: O presente trabalho conclui que a radiografia digital possui uma margem de erro menor quando comparada à radiografia convencional, o que leva a diagnósticos fidedignos de situações em região oral e maxilofacial, levando também a um aperfeiçoamento no tratamento...


The first digital radiography came up in 1987. This technology is considered an important achievement, since it allows several advantages on traditional radiography, for example, by reducing the dose of exposure to X-Rays, by increasing the security and the quality of procedure, besides the fact that the cost benefit of digital radiography is better than the conventional one. Literature review: The main advantages of digital radiography when compared to the traditional one are: reduction of exposure dose, elimination of chemical process of revelation/fixation, the possibility of manipulating images and achieving new images without the need of new capture and lower discomfort to the patient. Objectives: The objective of this paper is reviewing the literature, taking into account the advantages and disadvantages of digital radiography when compared to the conventional one, and verifying its applicability in the Dentistry service. Conclusion: The present work concludes that the digital radiography has a lower margin of error than the conventional radiography, what leads to an important diagnosis of oral and maxillofacial region situations, also leading to a an improvement in the treatment...


Subject(s)
Humans , Radiography, Dental, Digital/methods , Radiography, Dental, Digital/trends , Reproducibility of Results , X-Ray Film
7.
Mem. Inst. Oswaldo Cruz ; 109(6): 748-756, 09/09/2014. graf
Article in English | LILACS | ID: lil-723994

ABSTRACT

The hepatitis C virus (HCV) encodes approximately 10 different structural and non-structural proteins, including the envelope glycoprotein 2 (E2). HCV proteins, especially the envelope proteins, bind to cell receptors and can damage tissues. Endothelial inflammation is the most important determinant of fibrosis progression and, consequently, cirrhosis. The aim of this study was to evaluate and compare the inflammatory response of endothelial cells to two recombinant forms of the HCV E2 protein produced in different expression systems (Escherichia coli and Pichia pastoris). We observed the induction of cell death and the production of nitric oxide, hydrogen peroxide, interleukin-8 and vascular endothelial growth factor A in human umbilical vein endothelial cells (HUVECs) stimulated by the two recombinant E2 proteins. The E2-induced apoptosis of HUVECs was confirmed using the molecular marker PARP. The apoptosis rescue observed when the antioxidant N-acetylcysteine was used suggests that reactive oxygen species are involved in E2-induced apoptosis. We propose that these proteins are involved in the chronic inflammation caused by HCV.


Subject(s)
Humans , Hepacivirus/metabolism , Human Umbilical Vein Endothelial Cells/immunology , Human Umbilical Vein Endothelial Cells/pathology , Nitric Oxide/metabolism , Tumor Necrosis Factor-alpha/metabolism , Viral Envelope Proteins/metabolism , Apoptosis/genetics , Arginase/metabolism , Cell Survival , Escherichia coli/metabolism , Fibrosis , Gene Expression/genetics , Genetic Engineering/methods , Genetic Vectors/metabolism , Hepacivirus/immunology , Hepatitis C Antigens/metabolism , Inflammation/metabolism , /metabolism , Pichia/metabolism , Plasmids/metabolism , Recombinant Proteins , Vascular Endothelial Growth Factor A/metabolism
10.
An. bras. dermatol ; 88(2): 264-267, abr. 2013. graf
Article in English | LILACS | ID: lil-674183

ABSTRACT

Cytotoxic lymphomas comprise a spectrum of peripheral T-cell lymphomas that can have a initial or late cutaneous presentation. We describe a 46-year-old man from Cape Verde, with a dermatosis involving his face and trunk, consisting of monomorphic papules with a smooth surface and both motor and sensory polyneuropathy.The hypothesis of leprosy was supported by the clinical and initial hystopathological findings and the patient was referred to our hospital with suspected Hansen's disease. In the new skin and lymph node biopsies a lymphocyte population was identified whose immunohystochemistry study allowed the diagnosis of T-cell lymphoma with expression of cytotoxic markers. The patient was started on chemotherapy with initial remission of the skin lesions but, subsequently, progression of systemic disease.


Os linfomas citotóxicos compreendem um espectro de linfomas de células T periféricos e linfomas Natural Killer que podem ter expressão cutânea primária ou secundária. Descrevemos o caso de um homem com 46 anos de idade, natural de Cabo Verde,com dermatose envolvendo a face e tronco constituída por pápulas monomorfas superfície lisa e polineuropatia sensitivo motora.A hipótese de Hanseníase foi colocada suportada por achados histopatológicos sugestivos sendo o doente referenciado à consulta de Doença de Hansen do nosso hospital. Em biopsia de pele e de gânglio identificou-se proliferação linfocitária cujo estudo imunohistoquímico permitiu o diagnóstico de linfoma T com expressão de marcadores citotóxicos. Iniciou quimioterapia verificando-se inicialmente remissão parcial das lesões cutâneas mas posteriormente a progressão da doença sistémica.


Subject(s)
Humans , Male , Middle Aged , Lymphoma, T-Cell, Cutaneous/pathology , Skin Neoplasms/pathology , Biopsy , Immunochemistry , Leprosy, Lepromatous/pathology , Skin/pathology , T-Lymphocytes, Cytotoxic/pathology
11.
Rev. Assoc. Med. Bras. (1992) ; 58(5): 527-531, set.-out. 2012. ilus
Article in English | LILACS | ID: lil-653762

ABSTRACT

OBJECTIVE: To identify measles virus genotypes in three cases of travelers suspected of measles infection. METHODS: Samples (blood and urine) were collected for serology, virus isolation, and genotyping. Sera were analyzed for IgM antibodies against measles virus and rubella virus by enzyme-linked immunosorbent assay (ELISA) (Siemens - Marburg, Germany). Clinical samples (lymphocytes and urine) were inoculated into Statens Serum Institute rabbit corneal epithelial cell line- ATCC CL 60 (SIRC) and Vero Slam cells. RNA was extracted from clinical samples and cell culture was inoculated and processed by polymerase chain reaction (PCR) with oligonucleotides specific for measles virus (MV) and rubella virus (RV). RESULTS: All patients showed IgM negative serology for MV and positive IgM for RV. RV belonging to genotypes 1B, 1C, and 1E were isolated from patients who came from Finland, Peru, and Germany, respectively. Genotype 1B has been found in Europe and on the East Coast of South America; 1C has been found in Peru and the West Coast of South America, and 1E, first identified in 1997, now appears to have worldwide distribution. CONCLUSION: Information about RV and MV genotypes circulating in São Paulo is essential for the control of measles, rubella, and congenital rubella syndrome (CRS) in Brazil.


OBJETIVO: Identificar o genótipo do vírus do sarampo em três viajantes suspeitos de infecção por sarampo. MÉTODOS: Amostras (sangue e urina) foram coletadas para sorologia, isolamento viral e genotipagem. As sorologias para pesquisa de IgM para o vírus do sarampo e da rubéola foi realizada utilizando-se o kit de ELISA (Siemens - Marburg, Alemanha). As amostras clínicas (linfócito e urina) foram inoculadas na SIRC (Statens Serum Institute rabbit corneal epithelial cell line-ATCC CL 60) e nas células Vero Slam. O RNA foi extraído das amostras clínicas e das células inoculadas e processadas por PCR, utilizando oligonucleotideos específicos para sarampo e rubéola. RESULTADOS: Todos os pacientes apresentaram sorologia IgM negativa para sarampo e positivo para rubéola. Os vírus da rubéola isolados dos pacientes que vieram da Finlândia, Peru e Alemanha pertencem aos genótipos 1B, 1C e 1E, respectivamente. O genótipo 1B foi encontrado na Europa e na costa oriental da América do Sul, o genótipo 1C foi encontrado no Peru e na costa oeste da América do Sul e o genótipo 1E, identificado pela primeira vez em 1997, agora aparenta ser um genótipo com distribuição mundial. CONCLUSÃO: O conhecimento dos genótipos de sarampo e rubéola que circulam em São Paulo é essencial para o controle do sarampo, rubéola e síndrome da rubéola congênita.


Subject(s)
Adult , Animals , Cattle , Female , Humans , Male , Rabbits , Measles virus/genetics , Measles/virology , Rubella virus/genetics , Rubella/epidemiology , Travel , Antibodies, Viral/analysis , Brazil/epidemiology , Chlorocebus aethiops , Enzyme-Linked Immunosorbent Assay , Genotype , Immunoglobulin M/analysis , Measles virus/isolation & purification , Measles/epidemiology , Measles/transmission , Reverse Transcriptase Polymerase Chain Reaction , Rubella virus/isolation & purification , Rubella/transmission , Vero Cells
13.
Ciênc. rural ; 41(3): 369-372, mar. 2011. ilus
Article in English | LILACS-Express | LILACS | ID: lil-579651

ABSTRACT

In the harvest year of 2004, a random sample of seed lots (n=165) from six rice-growing regions of Rio Grande do Sul (RS) State, Brazil, were examined under seed health blotter test. Fungi growth resembling Bipolaris or Drechslera spp. was isolated and identified at the species level. Observations on the anamorphic structures (conidiophores and conidia) allowed separation of isolates into three groups. Pseudothecia, asci and ascospores from sexual crosses between isolates from a same anamorphic group but originated from different regions showed the typical characteristics of three recognized species (anamorph/teleomorph): Bipolaris cynodontis (Cochliobolus cynodontis); B. curvispora (C. melinidis) and B. oryzae (C. miyabeanus). All species were widely distributed across the rice-growing regions. Overall, the most prevalent species were B. oryzae (44.6 percent) and B. curvispora (42,9 percent) followed by B. cynodontis (24,1 percent). This is the first report of B. cynodontis associated with rice seeds in Brazil and the preliminary identification of B. curvispora in rice by the observation of the teleomorph phase was confirmed. The regional occurrence of a complex of pathogenic Bipolaris species related to brown spot epidemics in other countries, may have epidemiological consequences in the region which deserve further investigation.


Uma amostra aleatória (n=165) de lotes de sementes de seis regiões produtoras de arroz no Estado do Rio Grande do Sul (RS), Brasil, ano de colheita 2004, foi examinada em teste blotter de sanidade de sementes. Fungos semelhantes a espécies de Bipolaris e Drechslera foram isolados para identificação das espécies. A observação de estruturas da fase anamórfica (conidióforos e conídios) permitiu separar os isolados em três grupos. Cruzamentos sexuais induzidos em isolados do mesmo grupo, mas originados de diferentes regiões, resultaram em pseudotécio, ascos e ascósporos, permitindo a identificação de três espécies (anamorfo/teleomorfo): Bipolaris cynodontis (Cochliobolus cynodontis); B. curvispora (C. melinidis) e B. oryzae (C. miyabeanus). Todas as espécies estavam distribuídas nas seis regiões produtoras no Rio Grande do Sul. Em geral, a espécie mais prevalente nas amostras foi B. oryzae (44,6 por cento) e B. curvispora (42,9 por cento) seguido de B. cynodontis (24,1 por cento). Este é o primeiro relato de B. cynodontis associada a sementes de arroz no Brasil, e confirma-se a ocorrência de B. curvispora pela observação da fase teleomórfica. A ocorrência de um complexo de espécies patogênicas de Bipolaris, relacionadas com a mancha parda em outros países, pode ter consequências epidemiológicas na região, o que merece futura atenção.

14.
Rev. Soc. Bras. Med. Trop ; 43(3): 234-239, May-June 2010. graf, tab
Article in English | LILACS | ID: lil-548515

ABSTRACT

INTRODUCTION: To review measles IgM-positive cases of febrile rash illnesses in the State of São Paulo, Brazil, over the five-year period following interruption of measles virus transmission. METHODS: We reviewed 463 measles IgM-positive cases of febrile rash illness in the State of São Paulo, from 2000 to 2004. Individuals vaccinated against measles < 56 days prior to specimen collection were considered to be exposed to the vaccine. Serum from the acute and convalescent phases was tested for evidence of measles, rubella, parvovirus B19 and human herpes virus-6 infection. In the absence of seroconversion to measles immunoglobulin-G, measles IgM-positive cases were considered false positives in individuals with evidence of other viral infections. RESULTS: Among the 463 individuals with febrile rash illness who tested positive for measles IgM antibodies during the period, 297 (64 percent) were classified as exposed to the vaccine. Among the 166 cases that were not exposed to the vaccine, 109 (66 percent) were considered false positives based on the absence of seroconversion, among which 21 (13 percent) had evidence of rubella virus infection, 49 (30 percent) parvovirus B19 and 28 (17 percent) human herpes virus-6 infection. CONCLUSIONS: Following the interruption of measles virus transmission, thorough investigation of measles IgM-positive cases is required, especially among cases not exposed to the vaccine. Laboratory testing for etiologies of febrile rash illness aids interpretation of these cases.


INTRODUÇÃO: Revisar os casos de doenças febris exantemáticas com IgM reagente contra o sarampo, no Estado de São Paulo, Brasil, durante os cinco anos seguidos a interrupção da transmissão do vírus do sarampo. MÉTODOS: Nós revisamos 463 casos de doenças febris exantemáticas com IgM reagente contra o sarampo, no Estado de São Paulo, Brasil, de 2000 a 2004. Indivíduos vacinados contra o sarampo 56 dias antes da coleta de amostra foram considerados expostos à vacina. Soros da fase aguda e de convalescença foram testados para a evidência de infecção de sarampo, rubéola, parvovírus B19 e herpes vírus 6. Na ausência de soroconversão para imunoglobulina G contra o sarampo, casos com IgM reagente contra o sarampo foram considerados falsos positivos em pessoas com evidência de outras infecções virais. RESULTADOS: Entre as 463 pessoas com doenças febris exantemáticas que testaram positivo para anticorpos IgM contra o sarampo durante o período, 297 (64 por cento) pessoas foram classificadas como expostas à vacina. Entre os 166 casos não expostos à vacina, 109 (66 por cento) foram considerados falsos positivos baseado na ausência de soroconversão, dos quais 21 (13 por cento) tiveram evidência de infecção por vírus da rubéola, 49 (30 por cento) parvovírus B19 e 28 (17 por cento) infecção por herpes vírus humano 6. CONCLUSÕES: Após a interrupção da transmissão do vírus do sarampo é necessária exaustiva investigação dos casos com IgM reagente contra o sarampo, especialmente dos casos não expostos à vacina. Testes laboratoriais para etiologias das doenças febris exantemáticas ajudam na interpretação destes casos.


Subject(s)
Humans , Exanthema/diagnosis , Immunoglobulin M/blood , Measles Vaccine/immunology , Measles virus/immunology , Measles/diagnosis , Brazil/epidemiology , Exanthema/epidemiology , False Positive Reactions , Immunoglobulin M/immunology , Measles/epidemiology , Measles/prevention & control , Population Surveillance , Parvoviridae Infections/diagnosis , Parvoviridae Infections/epidemiology , Roseolovirus Infections/diagnosis , Roseolovirus Infections/epidemiology , Rubella/diagnosis , Rubella/epidemiology
15.
Rev. Inst. Adolfo Lutz ; 68(1): 145-149, jan.-abr. 2009. ilus, graf
Article in English | LILACS, SES-SP | ID: lil-542093

ABSTRACT

The present study evaluated the efficacy of various culture media for performing the isolation and growth of the rubella virus inoculated into SIRC cells. Rubella virus RA-27/3 strain and RVi/São Paulo/BRA99 wild type strain (Gen Bank number DQ458965) were inoculated into SIRC cell line and cultivated in 199, DMEM, MEM and RPMI media. The inoculated cells when examined on phase contrast microscopy showed the characteristic rounded and multipolar cells. The CPE was observed at the first 48 hours cultivation in the respective tested media. The curve of the infectivity increase was higher in the cultures maintained in DMEM and RPMI media. Hence, the SIRC cellular lineage cultivated in DMEM or RPMI media is an excellent substratum for performing the rubella virus isolation. These findings are relevant since the SIRC has been one of the few cell lines described in the literature which presents a cytopathic effect, and on that account it can be useful for carrying out the virus isolation from clinical specimens.


Subject(s)
Cytopathogenic Effect, Viral , Rubella virus
16.
Rev. Assoc. Med. Bras. (1992) ; 55(2): 117-120, 2009. tab
Article in Portuguese | LILACS | ID: lil-514806

ABSTRACT

OBJETIVO: Determinar a prevalência de anticorpos para a rubéola na população de 15 a 39 anos no município de Guaratinguetá, São Paulo, SP. MÉTODOS: Neste estudo, 996 amostras foram colhidas após consentimento informado e esclarecido entre homens e mulheres na faixa etária de 15 a 39 anos. Os anticorpos da classe IgG foram detectados por ELISA usando kit comercial Rubenostika IgGII (Organon Teknika AS, Holland). As faixas etárias foram estratificadas em três categorias: 15-19 anos; 20-29 anos e 30-39 anos. As análises estatísticas foram realizadas pelo software MINITAB versão 14.0 (Minitab Inc, EUA). RESULTADOS: A proporção de soros reagentes para anticorpos da classe IgG nas faixas etárias estudadas foram: 92,7 por cento positivos de 15-19 anos; 82,4 por cento de 20 a 29 anos e 90,7 por cento de 30-39 anos com diferença significativa na proporção de soropositivos pela faixa etária ( p < 0,001 ). A variação de intensidade da resposta anticórpica foi calculada e os resultados mostram que há diferença significativa (p = 0,002) entre as médias das três faixas etárias estudadas. Em relação à área rural e urbana, a média da relação DO/CO para cada faixa etária, observa-se que há uma tendência significativa de médias menores na zona rural. O mesmo ocorre quando são calculadas as proporções de soropositivos. CONCLUSÃO: Os resultados obtidos mostraram que o percentual e indivíduos com anticorpos da classe IgG contra a rubéola na faixa etária de 20-29 anos foi abaixo aquela observada em faixas etárias inferiores ou superiores. Além disso, a diferença da soropositividade entre a zona urbana e rural traduz uma suscetibilidade com potencial de manter a circulação do vírus nesta região.


OBJECTIVE: To investigate seroprevalence of rubella antibodies in a 15 to 39 year old population in the municipal district of Guaratinguetá. METHODS: The 996 samples studied were collected in urban and rural zones, after informed and elucidated consent from men and women stratified by age (15 -39 years). Rubella IgG antibodies were detected by ELISA using the commercial kit Rubenostika IgGII (Organon Teknika THE, Holland). Age groups were stratified in 3 categories: 15-19; 20-29 and 30-39 years of age. Statistical analyses were accomplished with the software MINITAB version 14.0 (Minitab Inc, USA). RESULTS: The proportion of seropositives for antibodies of the IgG class were: 92.7. percent positive for 15-19 years; 82.4 percent for 20 to 29 years and 90.7 percent for 30-39 years, with a significant difference in the seropositive proportions by age group (p <0.001). Variation of intensity of antibody response was calculated and results show a significant difference (p = 0.002) between means of the 3 age groups studied. In relation to rural and urban zone average of the ratio DO/CO for each age group, a significant tendency towards a lower average was observed in the rural zone. The same was true when the seropositive proportions were calculated. CONCLUSION: Results showed that the percentage and individuals with antibodies of the IgG class against rubella in the 20-29 year age group was lower than that in the younger and older age groups. Furthermore, the difference between seropositivity in the urban and rural zones discloses susceptibility with a potential for continued circulation of the virus in this zone.


Subject(s)
Adolescent , Adult , Female , Humans , Male , Young Adult , Rubella/epidemiology , Rural Population/statistics & numerical data , Urban Population/statistics & numerical data , Age Distribution , Analysis of Variance , Antibodies, Viral/blood , Brazil/epidemiology , Immunoglobulin G/blood , Rubella virus/immunology , Rubella/immunology , Seroepidemiologic Studies , Young Adult
17.
J. bras. patol. med. lab ; 44(6): 423-427, dez. 2008. tab
Article in English | LILACS | ID: lil-515118

ABSTRACT

Human parvovirus B19 infection is known to be one of the causes of hydrops fetalis. The maternal infection caused by the virus may be symptomatic or asymptomatic. In this study, 40 pregnant women with gestational age of approximately 25 weeks, prenatal diagnosis of non immune hydrops fetalis and suspected of human parvovirus B19 infection were studied between January 1999 and December 2005. Serology results and detection of DNA in the maternal serum, foetal serum and amniotic fluid confirmed that 20 pregnant women had been infected by human parvovirus B19. The ultrasound examination demonstrated foetal hydrops, anaemia, hepatosplenomegaly, ascites, cardiopathy and amniotic fluid disorders. Among the positive cases, there were three fatal losses, one by miscarriage and two by intrauterine foetal death.


A infecção por parvovírus humano B19 é um dos responsáveis pela hidropsia fetal. A infecção materna causada pelo vírus pode ser sintomática ou assintomática. Neste estudo 40 mulheres com idade gestacional de aproximadamente 25 semanas, diagnóstico pré-natal de hidropsia fetal e suspeita de infecção por parvovírus humano B19 foram avaliadas durante o período de janeiro de 1999 a dezembro de 2005. Os resultados de sorologia e detecção de DNA no soro materno, fetal e fluido amniótico confirmaram 20 mulheres grávidas com infecção por parvovírus humano B19. A análise de ultra-som demonstrou hidropsia fetal, anemia, hepatosplenomegalia, ascite, cardiopatia e desordens amnióticas. Entre os casos positivos, ocorreram três perdas fetais: uma por aborto e duas por morte fetal intra-uterina.


Subject(s)
Humans , Female , Pregnancy , Pregnancy Complications, Infectious/virology , Hydrops Fetalis/diagnosis , Parvoviridae Infections/diagnosis , Parvoviridae Infections/epidemiology , /genetics , /immunology , Cytogenetic Analysis , Pregnancy Complications, Infectious/genetics , Enzyme-Linked Immunosorbent Assay , Parvoviridae Infections/complications , Parvoviridae Infections , Polymerase Chain Reaction , Ultrasonography, Prenatal
19.
Rev. Inst. Adolfo Lutz ; 67(1): 69-72, jan.-abr. 2008. ilus, tab
Article in English | LILACS, SES-SP, SESSP-CTDPROD, SES-SP, SESSP-IALPROD, SES-SP | ID: lil-500699

ABSTRACT

O parvovirus humano B19 foi isolado e caracterizado de amostra clínica de um paciente, infectado no Japão, e que apresentou os sintomas de febre e erupção cutânea após sua chegada ao Brasil. A infecção por parvovírus foi confirmada por meio de seguintes ensaios: Elisa para detecção de anticorpos IgM antiparvovirus B19 e técnica de polymerase chain reaction (PCR). Um fragmento da região NS1-VP1 foi diretamente submetido ao seqüenciamento do nucleotídeo. A análise filogenética parcial do B19, frente às várias seqüências disponíveis no GenBank, indicou que PV B19 isolado correspondeu ao genótipo 1.


Human parvovirus B19 was identified and characterized in sample collected from a patient who was infected in Japan, and the symptoms as fever and rash appeared after arriving to Brazil. The occurrence of virus infection was confirmed by both assays: Elisa parvovirus B19-specific IgM antibody detection andpolymerase chain reaction (PCR). A fragment of NS1-VP1 region was directly submitted to nucleotide sequencing. Partial phylogenetic analysis of B19 sequences, including several sequences available in GenBank, indicated that the isolated HPV B19 corresponded to genotype 1.


Subject(s)
Molecular Epidemiology , Erythema Infectiosum , Erythrovirus , Base Sequence , Epidemiological Monitoring
20.
Rev. Inst. Adolfo Lutz ; 67(1): 83-86, jan.-abr. 2008. ilus, tab
Article in English | LILACS, SES-SP, SESSP-CTDPROD, SES-SP, SESSP-IALPROD, SES-SP | ID: lil-500702

ABSTRACT

No estado de São Paulo, Brasil, em função da eficiente estratégia para a vigilância do vírus do sarampo(VS), não houve registro de casos nativos de sarampo no período de 2001 a 2007. No estado de São Paulo foram registrados casos de sarampo importados, sendo 01 paciente em 2001, outro em 2002 e em 2005 foi alvo de investigação uma criança não vacinada, de 18 meses de idade com exantema e febre, que foi admitida em hospital privado. O Centro de Vigilância Epidemiológica descobriu que o irmão desta criança teve uma doença semelhante uma semana antes. A infecção pelo vírus do sarampo foi confirmada no Instituto Adolfo Lutz pela detecção de anticorpo IgM anti-VS, isolamento do vírus por meio de cultivo em células Vero/hSLAM e amplificação de RNA viral por RT-PCR. A região do gene da nucleoproteína do vírus isolado foi amplificada. O resultado da análise filogênica mostrou que o vírus isolado correspondeu ao genótipo D5. Este genótipo circula no continente da Ásia e há relatos sobre sua anterior circulação em São Paulo.


Owing to the efficient strategies for measles virus (MV) surveillance in São Paulo State, Brazil, no circulation of native measles virus was registered during the period from 2001 to 2007. In Sao Paulo State the imported measles cases were registered, being one in 2001, one in 2002, and in 2005 an unvaccinated 18-month-oldchild presenting fever and exanthema admitted to a private hospital was the target of epidemiological study. The Center of Epidemiological Surveillance found out that a brother of this child had had a similar disease one week before. The measles virus infection was confirmed at Adolfo Lutz Institute by detecting the MV-specific IgM antibody, by virus isolation on Vero/hSLAM cells culture, and by means of MV-RNA amplification on RT-PCR technique. A region of nucleoprotein gene from isolated virus was amplified. The phylogenetic analysis data showed that the isolated virus corresponded to genotype D5. This genotype circulates in the...


Subject(s)
Epidemiological Monitoring , Measles virus , Genotype
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