Streptococcus oralis, a commensal species of the human oral cavity, belongs to the Mitis group of streptococci, which includes one of the major human pathogens as well, S. pneumoniae. We report here the first complete genome sequence of this species. S. oralis Uo5, a high-level penicillin- and multiple-antibiotic-resistant isolate from Hungary, is competent for genetic transformation under laboratory conditions. Comparative and functional genomics of Uo5 will be important in understanding the evolution of pathogenesis among Mitis streptococci and their potential to engage in interspecies gene transfer.
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http://dx.doi.org/10.1128/JB.00321-11 | DOI Listing |
Cont Lens Anterior Eye
January 2025
Department of Physics of Condensed Matter, Optics Area, University of Seville, Reina Mercedes S/N, 41012 Seville, Spain.
Purpose: To characterize the ocular surface microbiota in regular contact lens wearers with dry eyes and assess the effectiveness of reducing bacterial load using a liposomal ozonated oil solution.
Methods: This prospective, longitudinal, controlled study randomized subjects into two groups. Group A (45 subjects) received hydroxypropylmethylcellulose (HPMC, Artific®), while Group B (41 subjects) received ozonated sunflower seed oil with soybean phospholipids (OSSO, Ozonest®).
Pharmaceuticals (Basel)
November 2024
Laboratório de Farmacologia de Antimicrobianos e Microbiologia, Faculdade de Ciências Farmacêuticas, Universidade Estadual de Campinas (UNICAMP), Campinas 13083-970, Brazil.
Introduction: Simvastatin is an antilipidemic drug that has already demonstrated antibacterial activities on oral and non-oral microorganisms. Silver nanoparticles also exhibit antimicrobial properties, particularly for coating implant surfaces. In this study, we evaluated the effects of combining simvastatin with silver nanoparticles on the formation and viability of biofilms consolidated on titanium discs.
View Article and Find Full Text PDFAntibiotics (Basel)
December 2024
Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing 100005, China.
Our aim was to investigate risk factors, clinical characteristics, and antibiotic susceptibility patterns of cornea-isolated species collected at a tertiary hospital in China over 18 years. This retrospective study reviewed data from 350 patients diagnosed with keratitis at Beijing Tongren Hospital between January 2006 and December 2023, including demographics, risk factors, clinical signs, in vivo confocal microscopy (IVCM) imaging, and antibiotic susceptibility testing. The predominant type was (n = 108, 29.
View Article and Find Full Text PDFJ Biomed Mater Res A
January 2025
Research and Development, ZimVie Dental, Palm Beach Gardens, Florida, USA.
Dental implant coronal surfaces designed with the primary goal of maintaining crestal bone levels may also promote bacterial adhesion, leading to soft tissue inflammation and peri-implant bone loss. Achieving an optimal surface roughness that minimizes bacterial adhesion while preserving crestal bone is crucial. It is hypothesized that a specific threshold surface roughness value may exist below which, and above which, initial bacterial adhesion does not statistically change.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China.
Human dental caries is an intractable biofilm-associated disease caused by the symbiotic cariogenic bacteria, but how to target effectively eliminate cariogenic bacterial and their biofilms without affecting normal bacteria still remains great challenges. To address this issue, we reported Cu,Fe-doped chitosan-based nanozyme (i.e.
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