Results 61 to 70 of about 3,055 (179)
Pathogens, 2020 Aggregatibacter actinomycetemcomitans, the focus of this review, was initially proposed as a microbe directly related to a phenotypically distinct form of periodontitis called localized juvenile periodontitis.
Daniel H. Fine +2 more
doaj +1 more source
Environmental Microbiology Reports, Volume 18, Issue 3, June 2026.Full‐length 16S and 18S rRNA Oxford Nanopore sequencing of large intestine contents from 30 healthy European brown hares revealed broad gut microbiome diversity. An 80% identity threshold detected substantially greater taxonomic richness than 95%, emphasizing the value of long‐read sequencing in wildlife microbiome research. ABSTRACT The European brown
Zbigniew Bełkot +7 more
wiley +1 more source
Secretion of RTX Leukotoxin by Actinobacillus actinomycetemcomitans [PDF]
Infection and Immunity, 2000 ABSTRACT Actinobacillus actinomycetemcomitans , the etiologic agent for localized juvenile periodontitis and certain other human infections, such as endocarditis, expresses a leukotoxin that acts on polymorphonuclear leukocytes and macrophages.
S C, Kachlany, D H, Fine, D H, Figurski
openaire +2 more sources
Clinical Case Reports, Volume 14, Issue 3, March 2026.ABSTRACT This case report describes a novel presentation of Aggregatibacter actinomycetemcomitans causing deep neck abscess, mediastinitis, and deep vein thrombosis. Clinicians should be aware that this organism can cause invasive extra‐oral infection.
Joshua Sia, Carly Hughes
wiley +1 more source
Pathogens, 2019 Clostridium perfringens causes a wide range of diseases in a variety of hosts, due to the production of a diverse set of toxins and extracellular enzymes. The C.
Jake A. Lacey +3 more
doaj +1 more source
iMetaMed, Volume 2, Issue 1, March 2026.Oral microbiota: findings, classification, clinical significance, and therapeutic interventions for human systemic diseases ABSTRACT The oral microbiota is an ecological community of commensal, symbiotic, and pathogenic microorganisms that colonizes the oral cavity.
Miao Zhang +13 more
wiley +1 more source
Effects of Aggregatibacter actinomycetemcomitans leukotoxin on endothelial cells
Microbial Pathogenesis, 2013 Aggregatibacter actinomycetemcomitans is a human pathogen that produces leukotoxin (LtxA) as a major virulence factor. In this study the effect of LtxA on microvascular endothelial cell viability and phenotype was studied. High doses of single LtxA treatment (500 ng/ml to 5 μg/ml) significantly and irreversibly decreased cell proliferation and induced ...
Dietmann, Anelia +5 more
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Regulation of expression of the Pasteurella haemolytica leukotoxin determinant [PDF]
Journal of Bacteriology, 1989 The Pasteurella haemolytica leukotoxin determinant is composed of four contiguous genes encoded on the same DNA strand and denoted lktCABD, in the order of their genetic organization. To gain a better understanding of the expression and regulation of the leukotoxin, the transcripts and promoters of the lkt determinant were mapped.
C A, Strathdee, R Y, Lo
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Virulence and Pathogenicity Properties of Aggregatibacter actinomycetemcomitans
Pathogens, 2019 Aggregatibacter actinomycetemcomitans is a periodontal pathogen colonizing the oral cavity of a large proportion of the human population. It is equipped with several potent virulence factors that can cause cell death and induce or evade inflammation ...
Georgios N. Belibasakis +7 more
doaj +1 more source
Case Reports in Otolaryngology, Volume 2026, Issue 1, 2026.Background Lemierre’s syndrome is a rare but potentially life‐threatening condition traditionally characterized by bacteremia, septic thrombophlebitis of the internal jugular vein, and metastatic septic emboli following pharyngotonsillitis. We report an atypical presentation originating from submandibular sialadenitis and complicated by external ...
Sara Torretta +3 more
wiley +1 more source