Results 91 to 100 of about 19,480 (272)

Occurrence of Aggregatibacter actinomycetemcomitans in Brazilians with chronic periodontitis [PDF]

Brazilian Oral Research, 2010
Studies have suggested that A. actinomycetemcomitans is involved in the aetiology of aggressive periodontitis as well as in chronic periodontitis. This study was aimed at elucidating the occurrence of A. actinomycetemcomitans in a Brazilian population with chronic periodontitis. A total of 555 (mean age 33.04 +/- 12.45) individuals, living in two large
Cortelli, José Roberto, Roman-Torres, Caio Vinícius Gonçalves, Aquino, Davi Romeiro, Franco, Gilson Cesar Nobre, Costa, Fernando Oliveira, Cortelli, Sheila Cavalca   +5 more
openaire   +5 more sources

Aggregatibacter actinomycetemcomitans (Aa) Under the Radar: Myths and Misunderstandings of Aa and Its Role in Aggressive Periodontitis

Frontiers in Immunology, 2019
Aggregatibacter actinomycetemcomitans (Aa) is a low-abundance Gram-negative oral pathobiont that is highly associated with a silent but aggressive orphan disease that results in periodontitis and tooth loss in adolescents of African heritage.
D. Fine, Amey Patil, S. Velusamy
semanticscholar   +1 more source

Persister Cell Formation and Elevated lsrA and lsrC Gene Expression upon Hydrogen Peroxide Exposure in a Periodontal Pathogen Aggregatibacter actinomycetemcomitans

Microorganisms, 2023
The effect of hydrogen peroxide, an antiseptic dental treatment, on Aggregatibacter actinomycetemcomitans, the main causative agent of localized invasive periodontitis, was investigated.
Yohei Nakamura, Koji Watanabe, Yoshie Yoshioka, Wataru Ariyoshi, Ryota Yamasaki   +4 more
doaj   +1 more source

Extracellular vesicles from Aggregatibacter actinomycetemcomitans exhibit potential antitumorigenic effects in oral cancer: a comparative in vitro study

Archives of Microbiology
Aggregatibacter actinomycetemcomitans is an opportunistic Gram-negative periodontopathogen strongly associated with periodontitis and infective endocarditis.
Marjut Metsäniitty, Shrabon Hasnat, Carina Öhman, Tuula Salo, Kari K Eklund, J. Oscarsson, A. Salem   +6 more
semanticscholar   +1 more source

Prevalence and comparative analysis of the type IV secretion system in Aggregatibacter actinomycetemcomitan

Journal of Microbiology, Immunology and Infection, 2018
Backgroud/purpose: Aggregatibacter actinomycetemcomitans has emerged as one of the aetiological agents in periodontal disease. Although Type IV secretion systems (T4SSs) are widely distributed in many bacteria, the genetic features and distribution of ...
Chih-Chin Liu, Chang-Hua Chen, Chuan Yi Tang, Kuan-Hsueh Chen, Zhao-Feng Chen, Shih-Hao Chang, Chi-Ying Tsai, Ming-Li Liou   +7 more
doaj   +1 more source

Polymerase chain reaction in the identification of periodontopathogens: A reliable and satisfactory method? [PDF]

Archives of Biological Sciences, 2012
Aggregatibacter actinomycetemcomitans is considered one of the bacterial species of etiological importance in periodontitis. The aim of this study was to evaluate the serotype of A.
Nikolić-Jakoba Nataša, Vojnović Sandra, Pavić A., Janković S., Leković V., Vasiljević Branka   +5 more
doaj   +1 more source

Presence and Immunoreactivity of <i>Aggregatibacter actinomycetemcomitans</i> in Rheumatoid Arthritis. [PDF]

Pathogens
The presence of periodontal pathogens is associated with an increased prevalence of rheumatoid arthritis (RA). The systemic antibody response to epitopes of these bacteria is often used as a proxy to study correlations between bacteria and RA. The primary aim of the present study is to examine the correlation between the presence of Aggregatibacter ...
Svärd A, LoMartire R, Martinsson K, Öhman C, Kastbom A, Johansson A, Johansson A.   +6 more
europepmc   +7 more sources

Effects of Aggregatibacter actinomycetemcomitans leukotoxin on neutrophil migration and extracellular trap formation.

, 2016
BACKGROUND: Aggressive periodontitis is associated with the presence of Aggregatibacter actinomycetemcomitans, a leukotoxin (Ltx)-producing periodontal pathogen. Ltx has the ability to lyse white blood cells including neutrophils.
Hirschfeld, Josefine, Parčina, Marijo, Johansson, Anders, Jepsen, Søren, Claesson, Rolf, Claesson, Rolf,, Helen M. Roberts, Josefine Hirschfeld, Roberts, Helen M, Rolf Claesson, Johansson, Anders,, Anders Johansson, Chapple, Iain L C, Iain L. C. Chapple, Marijo Parčina, Søren Jepsen   +15 more
core   +1 more source

Aggregatibacter actinomycetemcomitans Leukotoxin [PDF]

Journal of Dental Research, 2010
Aggregatibacter actinomycetemcomitans is a Gram-negative bacterium that colonizes the human oral cavity and is the causative agent for localized aggressive periodontitis (LAP), an aggressive form of periodontal disease that occurs in adolescents. A. actinomycetemcomitans secretes a protein toxin, leukotoxin (LtxA), which helps the bacterium evade the ...
openaire   +2 more sources

Does timing of systemic antibiotics influence periodontal treatment outcomes? A randomized clinical trial

Journal of Periodontology, EarlyView.
Abstract Background The aim of this study is to determine whether the timing of metronidazole (MTZ) and amoxicillin (AMX) administration, relative to scaling and root planing (SRP), influences the clinical and microbiological outcomes of periodontal treatment.
Daiane Fermiano, Eduardo de Souza Oliveira, Maria Josefa Mestnik, Luciene C. Figueiredo, Takahiko Shiba, Shunsuke Matsumura, Edson de Sousa, Helio Doyle, Rafael Oliveira Dias, Marcelo de Faveri, Magda Feres   +10 more
wiley   +1 more source