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Background The objective of the study was to determine whether the staining pattern and titer of indirect immunofluorescence assay on HEp-2 cells (HEp-2 IFA) are associated with systemic lupus erythematosus (SLE) disease activity. Methods A total of 269 consecutive patients meeting the ACR and SLICC criteria for SLE were classified into three groups according to the SLE Disease Activity Index 2000 (SLEDAI2K): Remission (SLEDAI2K = 0; n = 47); Intermediate (SLEDAI2K = 1-5; n = 111); Active (SLEDAI2K ≥ 6; n = 111). All subjects were assessed for HEp-2 IFA titer and staining pattern and nine traditional parameters of SLE disease activity. After a 6 to 12-month interval, 101 of the 269 patients were reassessed. Results HEp-2 IFA homogeneous nuclear pattern (AC-1) occurred more frequently in the Active Group compared to the Remission Group (p < 0.001). Fine speckled nuclear pattern (AC-4) tended to occur more frequently in the Remission Group compared to the Active Group (p = 0.054). Subjects with AC-1 pattern had higher SLEDAI (8.8 ± 7.6) than those with AC-4 (4.8 ± 5.2) (p < 0.001). HEp-2 IFA titer and anti-nuclear antibody by enzyme-linked immunosorbent assay (ANA-ELISA) values were lower in the Remission Group compared to the other two groups (p < 0.001). Multivariate analyses identified only ELISA anti-dsDNA as an independent variable associated with disease activity. In follow-up analysis, HEp-2 IFA titer decreased significantly in the 33 subjects with decreased disease activity (p = 0.002). Receiver operator characteristic (ROC) curve analysis for determination of disease activity showed equivalent areas under the curve (AUC) for HEp-2 IFA titer and traditional disease activity parameters. Conclusions HEp-2 IFA pattern and titer can reflect SLE disease activity and may be considered in conjunction with other laboratory and clinical parameters in the assessment of SLE disease activity.
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Anticorpos Antinucleares/sangue , Ensaio de Imunoadsorção Enzimática/métodos , Lúpus Eritematoso Sistêmico/imunologia , Adulto , Linhagem Celular , DNA/imunologia , Feminino , Humanos , Lúpus Eritematoso Sistêmico/sangue , Masculino , Pessoa de Meia-Idade , Nucleossomos/imunologia , Estudos ProspectivosRESUMO
OBJECTIVES: Changes in the intestinal microbiota have been associated with the pathogenesis of SSc. Probiotics act by modulating the microbiome and the immune response. This study aimed to evaluate the efficacy of probiotics on gastrointestinal (GI) symptoms and immune responses in SSc patients. METHODS: Patients with SSc with a moderate-severe total score on the University of California Los Angeles Scleroderma Clinical Trials Consortium Gastrointestinal Tract 2.0 (UCLA GIT 2.0) instrument were randomly assigned to receive a daily dose of probiotics (Lactobacillus paracasei, Lactobacillus rhamnosus, Lactobacillus acidophillus and Bifidobacterium lactis, 109 colony-forming units per capsule) or placebo for 8 weeks. The primary endpoint was improvement in the UCLA GIT 2.0 total score after 8 weeks. Secondary outcomes included changes in Th1, Th2, Th17 and regulatory T cell circulating levels and in the HAQ Disability Index (HAQ-DI) score. Parameters were assessed at baseline and after 4 and 8 weeks of treatment. RESULTS: A total of 73 patients were randomized to receive probiotics (n = 37) or placebo (n = 36). After 8 weeks, there was no difference in the UCLA GIT 2.0 score between the two groups. At week 8, the probiotic group showed a significant decrease in the proportion of Th17 cells compared with placebo (P = 0.003). There was no difference in the proportion of Th1, Th2 and regulatory T cells or in the HAQ-DI score between the groups. CONCLUSION: Probiotics did not improve GI symptoms in SSc patients. The reduction in Th17 cell levels suggests an immunomodulatory effect of probiotics on SSc. TRIAL REGISTRATION: ClinicalTrials.gov (http://clinicaltrials.gov), NCT02302352.
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Gastroenteropatias/terapia , Probióticos/uso terapêutico , Escleroderma Sistêmico/imunologia , Escleroderma Sistêmico/microbiologia , Adulto , Avaliação da Deficiência , Método Duplo-Cego , Feminino , Gastroenteropatias/etiologia , Gastroenteropatias/microbiologia , Microbioma Gastrointestinal/imunologia , Trato Gastrointestinal/imunologia , Trato Gastrointestinal/microbiologia , Humanos , Masculino , Pessoa de Meia-Idade , Escleroderma Sistêmico/complicações , Índice de Gravidade de Doença , Linfócitos T/metabolismo , Linfócitos T/microbiologia , Resultado do TratamentoRESUMO
OBJECTIVE: To analyze the Family Health Program replaced by the Family Health Strategy in 2011, based on health indicators and diseases classified as primary care sensitive. METHODS: This was a descriptive, analytical and documental study carried out in the Metropolitan Region of São Paulo between 2002 and 2007. We analyzed data from Health observatory for the Metropolitan Region of São Paulo. Pearson's correlation and the Statistical Package for the Social Sciences software version 17.0 were used to calculate data associations. RESULTS: We used 30 of the 31 health indicators of 24 from the 39 studied municipalities. A total of 720 (100%) health primary care sensitive indicators were analyzed in the Metropolitan Region of São Paulo. CONCLUSION: Percentages of improvements and worsening were low. In addition, some data were not presented. The majority of indicators remained stable.
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Saúde da Família/estatística & dados numéricos , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Atenção Primária à Saúde/estatística & dados numéricos , Brasil , Cidades , Humanos , Programas Nacionais de Saúde , Características de Residência , Estudos Retrospectivos , Fatores Socioeconômicos , População UrbanaRESUMO
BACKGROUND: It has long been established that obesity plays a positive role against osteoporosis (OP) and low-impact fractures (Fx). However, more recent data has shown higher fracture risk in obese individuals. The aim of this study was to investigate the association between BMI, particularly obesity, OP and low-impact Fx in Brazilian women, as well as to evaluate the SAPORI (Sao Paulo Osteoporosis Risk Index) tool performance to identify low BMD according BMI category. METHODS: A total of 6182 women aged over 40 years were included in this cross-sectional analysis using data from two large Brazilian studies. All participants performed hip and spine bone mineral density (BMD) measurements and answered a detailed questionnaire about the presence of clinical risk factors (CRFs) related to low BMD and risk fractures. The World Health Organization (WHO) criteria were used to define obesity. RESULTS: Age-adjusted osteoporosis prevalence was 20.8, 33.6, 47 and 67.1% in obese, overweight, normal and underweight category, respectively. Obesity was present in 29,6% (1.830 women) in the study population and the likelihood of osteoporosis and low-impact Fx compared to a normal BMI in this subgroup was of 0.24 (95% CI 0.20-0.28; p < 0.001) and of 1.68 (95% CI 1.35-2.11; p < 0.001), respectively. However, the hip Fx likelihood was lower in obese compared with non-obese women (OR = 0.44; 95% CI 0.20-0.97). Using an originally validated cut-off, the SAPORI tool sensitivity was significantly hampered in overweight and obese women although the accuracy had remained suitable because of increasing in specificity. CONCLUSIONS: The osteoporosis prevalence reduced as BMI increased and obesity was associated with low-impact Fx, regardless of the BMD measurements. Moreover, the SAPORI performance was impaired in obese women.
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Índice de Massa Corporal , Densidade Óssea , Fraturas Espontâneas/etiologia , Obesidade/complicações , Fraturas por Osteoporose/etiologia , Fatores Etários , Peso Corporal , Brasil/epidemiologia , Feminino , Quadril , Humanos , Pessoa de Meia-Idade , Obesidade/epidemiologia , Osteoporose/complicações , Osteoporose/epidemiologia , Prevalência , Fatores de Risco , Sensibilidade e Especificidade , Coluna Vertebral , Magreza/complicações , Magreza/epidemiologiaRESUMO
BACKGROUND: The Enhanced Liver Fibrosis (ELF) is a serological score that includes hyaluronic acid (HA), tissue inhibitor of matrix metalloproteinases-1(TIMP-1), and aminoterminal propeptide of type III procollagen (PIIINP) and shows good performance for detecting liver fibrosis. There are few studies evaluating ELF's intra and inter-assay variation and stability of the samples. The influence of host variables, such as age, gender and body mass index (BMI) is also not well known. We determined ELF's analytical performance and possible influences of gender, age and BMI. METHODS: The study included 958 healthy blood donors evaluated for age, gender, and BMI. RESULTS: Mean ELF scores were significantly different between female (8.53±0.75) and male groups (8.76±0.76) and also according to age strata (p<0.001). For both genders, ELF significantly varied in individuals with BMI under 25 (p<0.001). Analytes remained stable after freezing/thawing cycles and intra- and inter-assay coefficients of variation were low. CONCLUSIONS: ELF has appropriate precision and is quite robust, due to the high stability of the analytes in fresh and frozen samples. ELF's results are influenced by gender, age and BMI which should be taken into account when analyzing its results.
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Doadores de Sangue , Cirrose Hepática/sangue , Adolescente , Adulto , Idoso , Índice de Massa Corporal , Estudos de Coortes , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto JovemRESUMO
This study aimed to determine the occurrence of Mannheimiahaemolytica, Pasteurella multocida and Mycoplasma spp., in relation to clinical signs of respiratory disease. Tracheobronchial lavage samples were collected from 96 (healthy and unhealthy) cattle in the State of São Paulo, Brazil. Mycoplasma spp. (12.5 %) and Pasteurellamultocida (15.50 %) were the most prevalent species. Bacillus sp., Staphylococcus sp., Escherichia coli, Klebsiella oxytoca, Pseudomonas aeruginosa and Klebsiella pneumoniae were also isolated. Mollicutes (70.83 %), Mycoplasmabovis (2.94 %) and Mycoplasma dispar (38.23 %) were identified using conventional PCR. Submassive sound on acoustic percussion of the thorax was associated with the absence of Mollicutes (P=0.025). Whistling (P=0.076) and coarse crackle (P=0.046) were associated with the absence of Mycoplasma dispar. Clear sound on acoustic percussion of the thorax was associated with the absence of Mycoplasmabovis (P=0.007). Coughing was associated with the presence of Pasteurellamultocida [P=0.035; confidence interval (CI), 1.12-26.89], but its absence was associated with mucopurulent (P=0.0215; CI, 1.55-34.5) and mucoid nasal discharge (P=0.068; CI, 19-28.5), submassive sound (P=0.031; CI, 1.23-75.5), fine crackle (P=0.058; CI, 1.23-20.1) and coarse crackle (P=0.046; CI, 2.38-70.8). The high prevalence of Pasteurella multocida and Mycoplasma spp. in unhealthy calves increases the importance of these micro-organisms in the pathogenesis of respiratory diseases. This study increases the information about the role of Mycoplasma dispar in respiratory diseases. Differences in some species in relation to clinical signs can be applied as a presumptive diagnosis.
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Líquido da Lavagem Broncoalveolar/microbiologia , Doenças dos Bovinos/microbiologia , Mannheimia haemolytica/isolamento & purificação , Mycoplasma/isolamento & purificação , Pasteurella multocida/isolamento & purificação , Infecções Respiratórias/veterinária , Animais , Brasil , Bovinos , Doenças dos Bovinos/diagnóstico , Estudos Transversais , Feminino , Masculino , Mannheimia haemolytica/genética , Mycoplasma/genética , Pasteurella multocida/genética , Infecções Respiratórias/diagnóstico , Infecções Respiratórias/microbiologiaRESUMO
ABSTRACT Objective To analyze the Family Health Program replaced by the Family Health Strategy in 2011, based on health indicators and diseases classified as primary care sensitive. Methods This was a descriptive, analytical and documental study carried out in the Metropolitan Region of São Paulo between 2002 and 2007. We analyzed data from Health observatory for the Metropolitan Region of São Paulo. Pearson's correlation and the Statistical Package for the Social Sciences software version 17.0 were used to calculate data associations. Results We used 30 of the 31 health indicators of 24 from the 39 studied municipalities. A total of 720 (100%) health primary care sensitive indicators were analyzed in the Metropolitan Region of São Paulo. Conclusion Percentages of improvements and worsening were low. In addition, some data were not presented. The majority of indicators remained stable.
RESUMO Objetivo Analisar o Programa Saúde da Família, substituído pela Estratégia Saúde da Família em 2011, considerando os indicadores de saúde e as doenças classificadas como sensíveis à Atenção Primária. Métodos Trata-se de estudo descritivo, analítico e documental, realizado na Região Metropolitana de São Paulo, no período de 2002 a 2007. Foram analisados dados fornecidos pelo Observatório de Saúde da Região Metropolitana de São Paulo. Após a coleta, calcularam-se, com base na correlação de Pearson e por meio do software SPSS, versão 17.0, as associações entre os dados. Resultados Foram usados 30 dos 31 indicadores de saúde de 24 dos 39 municípios pesquisados. Foram analisados 720 (100%) indicadores de saúde sensíveis à Atenção Primária na Região Metropolitana de São Paulo. Conclusão Foram baixos os percentuais de melhoras e pioras, ou, ainda, os dados não foram apresentados. A maioria permaneceu estável.
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Humanos , Atenção Primária à Saúde/estatística & dados numéricos , Saúde da Família/estatística & dados numéricos , Fatores Socioeconômicos , População Urbana , Brasil , Características de Residência , Estudos Retrospectivos , Cidades , Acessibilidade aos Serviços de Saúde/estatística & dados numéricos , Programas Nacionais de SaúdeRESUMO
The aim of the study was to investigate S100ß levels in the cerebrospinal fluid of nonambulatory dogs with intervertebral disk disease treated with electroacupuncture: 10 dogs with thoracolumbar disk extrusion graded 3 to 5 (EA group) and 7 dogs without neurologic dysfunction (control group). All dogs regained ambulation. S100ß was detected by Western blot analysis where EA group dogs were evaluated at two time points (M1 = before EA and M2 = when the dogs return ambulation) and at one time point from control group. In EA group dogs M1-S100ß levels were significantly higher than in control group. EA group dogs were divided into subgroups A (n = 7-early motor recovery; 6.7 ± 7.8 days) and B (n = 3-late motor recovery; 76 ± 17.0 days). M1-S100ß levels were similar between subgroups A and B. However, M2-S100ß levels were significantly higher in subgroup B than in subgroup A. An elevated S100ß levels were observed in dogs with late motor recovery. S100ß may be associated with neuroplasticity following spinal cord injuries with intervertebral disk extrusion. Further studies with larger numbers of subjects and control group with affected dogs are necessary to investigate the relationship between neurotrophic factors and electroacupuncture stimulation.
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OBJECTIVE: To compare autoantibody features in patients with primary biliary cirrhosis (PBC) and individuals presenting antimitochondria antibodies (AMAs) but no clinical or biochemical evidence of disease. METHODS: A total of 212 AMA-positive serum samples were classified into four groups: PBC (definite PBC, n = 93); PBC/autoimmune disease (AID; PBC plus other AID, n = 37); biochemically normal (BN) individuals (n = 61); and BN/AID (BN plus other AID, n = 21). Samples were tested by indirect immunofluorescence (IIF) on rat kidney (IIF-AMA) and ELISA [antibodies to pyruvate dehydrogenase E2-complex (PDC-E2), gp-210, Sp-100, and CENP-A/B]. AMA isotype was determined by IIF-AMA. Affinity of anti-PDC-E2 IgG was determined by 8 M urea-modified ELISA. RESULTS: High-titer IIF-AMA was more frequent in PBC and PBC/AID (57 and 70 %) than in BN and BN/AID samples (23 and 19 %) (p < 0.001). Triple isotype IIF-AMA (IgA/IgM/IgG) was more frequent in PBC and PBC/AID samples (35 and 43 %) than in BN sample (18 %; p = 0.008; p = 0.013, respectively). Anti-PDC-E2 levels were higher in PBC (mean 3.82; 95 % CI 3.36-4.29) and PBC/AID samples (3.89; 3.15-4.63) than in BN (2.43; 1.92-2.94) and BN/AID samples (2.52; 1.54-3.50) (p < 0.001). Anti-PDC-E2 avidity was higher in PBC (mean 64.5 %; 95 % CI 57.5-71.5 %) and PBC/AID samples (66.1 %; 54.4-77.8 %) than in BN samples (39.2 %; 30.9-37.5 %) (p < 0.001). PBC and PBC/AID recognized more cell domains (mitochondria, nuclear envelope, PML/sp-100 bodies, centromere) than BN (p = 0.008) and BN/AID samples (p = 0.002). Three variables were independently associated with established PBC: high-avidity anti-PDC-E2 (OR 4.121; 95 % CI 2.118-8.019); high-titer IIF-AMA (OR 4.890; 2.319-10.314); antibodies to three or more antigenic cell domains (OR 9.414; 1.924-46.060). CONCLUSION: The autoantibody profile was quantitatively and qualitatively more robust in definite PBC as compared with AMA-positive biochemically normal individuals.
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OBJECTIVE: To assess knowledge on fibromyalgia in a sample of patients, their families, and professionals interested on the theme from some Brazilian states. METHODS: Analysis of the results of an electronic fibromyalgia knowledge questionnaire completed by 362 adults who had access to the the support group for fibromyalgia site (www.unifesp.br/grupos/fibromialgia). The answers were grouped according to age, sex, years of schooling, and type of interest in the condition. RESULTS: 92% of the responders were women and 62% had higher educational level. The worst results were observed in the "joint protection and energy conservation" domain, followed by the "medication in fibromyalgia" domain. The best results were recorded in the "exercises in fibromyalgia" domain. The answers differed significantly between sexes, and women achieved a higher percentage of correct answers. The female sex accounted for a statistically superior result in five statistical analyses (four questions and one domain). CONCLUSIONS: The study suggests the need for a strategic planning for an educational approach to fibromyalgia in Brazil.
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Fibromialgia , Conhecimentos, Atitudes e Prática em Saúde , Internet , Adulto , Feminino , Humanos , Masculino , Inquéritos e QuestionáriosRESUMO
UNLABELLED: Aggregatibacter actinomycetemcomitans is associated with periodontal disease, especially localized aggressive periodontitis, produces a potent leukotoxin and its distribution is influenced by ethnic characteristics of the population. OBJECTIVE: Using culture and polymerase chain reaction (PCR) techniques, this study evaluated the occurrence of this microorganism and the distribution of leukotoxic strains isolated from Indians belonging to the Umutima Reservation, Mato Grosso, Brazil. MATERIAL AND METHODS: Forty-eight native Brazilians with gingivitis and 38 with chronic periodontitis, belonging to Umutina, Paresi, Bororo, Bakairi, Kayabi, Irantxe, Nambikwara and Terena ethnicities, were studied. Subgingival, supragingival and saliva samples of each patient were collected and transferred to VMGA III medium and to ultra pure Milli Q water. Bacteria were grown on TSBV agar and incubated in anaerobiosis (90% N2 + 10% CO2) at 37 degrees C for 72 h. The presence of the ltx promoter was determined by PCR, and a 530 bp deletion in the promoter was evaluated by using specific primers. RESULTS: A. actinomycetemcomitans was isolated from 8.33% of saliva, supragingival and subgingival samples from patients with gingivitis and from 18.42% of saliva and supragingival biofilm, and 26.32% subgingival biofilm from patients with chronic periodontitis. By PCR, the bacterial DNA was detected in 8.33% of saliva, supragingival and subgingival biofilms from patients with gingivitis and from 23.68% of saliva, 28.95% supragingival biofilm and 34.21% subgingival biofilm from patients with periodontitis. All strains were grouped as non-JP2 clones based on the absence of deletion in the leukotoxin promoter. Differences among the microbial and clinical parameters in patients were analyzed by using the Mann-Whitney, Chi-square or Fisher's exact tests. CONCLUSIONS: The present results suggest that A. actinomycetemcomitans can be related to the attachment loss in this population, but the presence of minimally leukotoxic strains, as well as its role in the pathogenesis of the periodontitis in these native Brazilians need to be further investigated.
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Aggregatibacter actinomycetemcomitans/isolamento & purificação , Periodontite Crônica/microbiologia , Gengivite/microbiologia , Indígenas Sul-Americanos , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Aggregatibacter actinomycetemcomitans/classificação , Toxinas Bacterianas/análise , Pareamento de Bases/genética , Sequência de Bases/genética , Biofilmes , Brasil/etnologia , Dispositivos para o Cuidado Bucal Domiciliar , Placa Dentária/microbiologia , Exotoxinas/análise , Gengiva/microbiologia , Hemorragia Gengival/microbiologia , Humanos , Pessoa de Meia-Idade , Perda da Inserção Periodontal/microbiologia , Bolsa Periodontal/microbiologia , Regiões Promotoras Genéticas/genética , Saliva/microbiologia , Deleção de Sequência/genética , Escovação Dentária , Adulto JovemRESUMO
OBJETIVO: Analisar o nível de conhecimento sobre fibromialgia em uma amostra incluindo pacientes, familiares e profissionais de vários estados do Brasil. MÉTODOS: Análise dos resultados de 362 adultos que acessaram o site do Grupo de Apoio à Fibromialgia (www.unifesp.br/grupos/fibromialgia) e responderam a um questionário eletrônico de conhecimento sobre a síndrome. As respostas foram avaliadas em relação a idade, sexo, nível de escolaridade e tipo de interesse no Grupo. RESULTADOS: 92 por cento eram mulheres e 62 por cento haviam completado o ensino superior. O pior resultado foi no domínio "proteção articular e conservação de energia", seguido pelo domínio "conhecimento sobre medicação". O melhor resultado ocorreu no domínio "exercícios para fibromialgia". Houve diferença significativa entre os gêneros, sendo as mulheres responsáveis por um porcentual maior de acertos. O gênero feminino foi responsável por um resultado estatisticamente superior em cinco análises estatísticas (quatro perguntas e um domínio). CONCLUSÕES: O estudo sugere a necessidade de um planejamento estratégico para ações educativas sobre fibromialgia no Brasil.
OBJECTIVE: To assess knowledge on fibromyalgia in a sample of patients, their families, and professionals interested on the theme from some Brazilian states. METHODS: Analysis of the results of an electronic fibromyalgia knowledge questionnaire completed by 362 adults who had access to the the support group for fibromyalgia site (www.unifesp.br/grupos/fibromialgia). The answers were grouped according to age, sex, years of schooling, and type of interest in the condition. RESULTS: 92 percent of the responders were women and 62 percent had higher educational level. The worst results were observed in the "joint protection and energy conservation" domain, followed by the "medication in fibromyalgia" domain. The best results were recorded in the "exercises in fibromyalgia" domain. The answers differed significantly between sexes, and women achieved a higher percentage of correct answers. The female sex accounted for a statistically superior result in five statistical analyses (four questions and one domain). CONCLUSIONS: The study suggests the need for a strategic planning for an educational approach to fibromyalgia in Brazil.
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Adulto , Feminino , Humanos , Masculino , Fibromialgia , Conhecimentos, Atitudes e Prática em Saúde , Internet , Inquéritos e QuestionáriosRESUMO
Aggregatibacter actinomycetemcomitans is associated with periodontal disease, especially localized aggressive periodontitis, produces a potent leukotoxin and its distribution is influenced by ethnic characteristics of the population. Objective: Using culture and polymerase chain reaction (PCR) techniques, this study evaluated the occurrence of this microorganism and the distribution of leukotoxic strains isolated from Indians belonging to the Umutima Reservation, Mato Grosso, Brazil. MATERIAL AND METHODS: Forty-eight native Brazilians with gingivitis and 38 with chronic periodontitis, belonging to Umutina, Paresi, Bororo, Bakairi, Kayabi, Irantxe, Nambikwara and Terena ethnicities, were studied. Subgingival, supragingival and saliva samples of each patient were collected and transferred to VMGA III medium and to ultra pure Milli Q water. Bacteria were grown on TSBV agar and incubated in anaerobiosis (90 percent N2 + 10 percent CO2) at 37ºC for 72 h. The presence of the ltx promoter was determined by PCR, and a 530 bp deletion in the promoter was evaluated by using specific primers. RESULTS: A. actinomycetemcomitans was isolated from 8.33 percent of saliva, supragingival and subgingival samples from patients with gingivitis and from 18.42 percent of saliva and supragingival biofilm, and 26.32 percent subgingival biofilm from patients with chronic periodontitis. By PCR, the bacterial DNA was detected in 8.33 percent of saliva, supragingival and subgingival biofilms from patients with gingivitis and from 23.68 percent of saliva, 28.95 percent supragingival biofilm and 34.21 percent subgingival biofilm from patients with periodontitis. All strains were grouped as non-JP2 clones based on the absence of deletion in the leukotoxin promoter. Differences among the microbial and clinical parameters in patients were analyzed by using the Mann-Whitney, Chi-square or Fisher's exact tests. CONCLUSIONS: The present results suggest that A. actinomycetemcomitans ...