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Transmission of Aggregatibacter actinomycetemcomitans between Brazilian women with severe chronic periodontitis and their children
Rêgo, Rodrigo Otávio Citó César; Spolidorio, Denise Madalena Palomari; Salvador, Sérgio Luiz de Souza; Cirelli, Joni Augusto.
  • Rêgo, Rodrigo Otávio Citó César; Federal University of Ceará. School of Pharmacy, Dentistry and Nursing. Department of Clinical Dentistry. Fortaleza. BR
  • Spolidorio, Denise Madalena Palomari; São Paulo State University. School of Dentistry of Araraquara. Department of Physiology and Pathology. Araraquara. BR
  • Salvador, Sérgio Luiz de Souza; São Paulo State University. School of Pharmaceutical Sciences of Ribeirão Preto. Department of Clinical, Toxicologic and Bromatologic Analysis. Ribeirão Preto. BR
  • Cirelli, Joni Augusto; São Paulo State University. School of Dentistry of Araraquara. Department of Diagnosis and Surgery. Araraquara. BR
Braz. dent. j ; 18(3): 220-224, 2007. ilus, tab
Article in English | LILACS | ID: lil-471444
ABSTRACT
This study evaluated the transmission of Aggregatibacter actinomycetemcomitans (Aa) in women with severe chronic periodontitis and their children. Thirty women (mean age = 36.1±6.0 years) who were mothers of at least one child aged 7 to 16 years were enrolled. In order to investigate mother-child transmission of Aa, the children were also evaluated when their mothers were colonized by the bacterium. Subgingival plaque samples of each woman were collected from 3 sites (mean probing depth of 7.3±1.2 mm and mean clinical attachment level of 7.9±1.5 mm) and pooled in reduced transport fluid (RTF). These samples were processed, inoculated onto TSBV-agar selective medium and incubated at 37°C in microaerophilic atmosphere for 5 days. Aa was identified on the basis of colony morphology, Gram staining, catalase and oxidase reactions. Aa was found in 8 out of 30 women. Therefore, 8 children from these women (mean age= 12 ± 3.7 years) were evaluated, but Aa was found only in 2 of them. Aa strains of the two mother-child pairs were evaluated by arbitrarily-primed polymerase chain reaction (AP-PCR), although it was not found similarity between the amplitypes of each pair. No Aa transmission was found between Brazilian women with severe chronic periodontitis and their children.
RESUMO
Este estudo avaliou a transmissão de Aggregatibacter actinomycetemcomitans (Aa) entre mulheres com periodontite crônica severa e seus filhos. A amostra constituiu-se de 30 mulheres com idade média de 36,1 ± 6,0 anos, mães de filhos com idade entre 7 e 16 anos. Apenas crianças cujas mães haviam sido colonizadas por Aa foram incluídas. Amostras de placa dentária subgengival foram colhidas de três sítios com profundidade de sonagem média de 7,3 ± 1,2 mm e perda de inserção clínica média de 7,9 ±1,5 mm e agrupadas em fluido de transporte reduzido (RTF). Estas amostras foram processadas e semeadas em meio seletivo ágar TSBV e incubados a 37ºC em atmosfera de microaerofilia por 5 dias. Aa foi identificado baseado na morfologia colonial, coloração de Gram e testes da catalase e oxidase. Aa foi detectado em 8 das 30 mulheres . Assim, 8 filhos destas mulheres, com idade média de 12 ± 3,7 anos foram investigados, mas Aa foi detectado em apenas 2 deles. Cepas de Aa dos 2 pares de mães e filhos foram submetidos a análise pela técnica de reação em cadeia de polimerase usando primers arbitrários (AP-PCR), mas os amplitipos de cada par não demonstraram similaridade. Portanto, não foi encontrada transmissão de Aa entre mulheres brasileiras com periodontite crônica severa e seus filhos.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Actinobacillus Infections / Aggregatibacter actinomycetemcomitans / Infectious Disease Transmission, Vertical / Dental Plaque / Chronic Periodontitis Limits: Adolescent / Adult / Child / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2007 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Federal University of Ceará/BR / São Paulo State University/BR

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Full text: Available Index: LILACS (Americas) Main subject: Actinobacillus Infections / Aggregatibacter actinomycetemcomitans / Infectious Disease Transmission, Vertical / Dental Plaque / Chronic Periodontitis Limits: Adolescent / Adult / Child / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: Braz. dent. j Journal subject: Dentistry Year: 2007 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: Federal University of Ceará/BR / São Paulo State University/BR