Author(s)

Tadashi Miura¹, Yukari Oda², Koji Tanabe³, Yasuhiko Shizawa⁴, Taichi Ito², Longqiang Yang⁵

¹Oral Health Science Center, Tokyo Dental College, Tokyo, Japan.
²Department of Oral and Maxillofacial Implantology, Tokyo Dental College, Tokyo, Japan.
³Department of Biomedical Engineering, Iwate Medical University, Iwate, Japan.
⁴Department of Liberal Arts, College of Bioresource Sciences, Nihon University, Kanagawa, Japan.
⁵Department of Pediatric Dentistry, Sichuan Hospital of Stomatology, Chengdu, China.

The aim of this study was to identify the potential antibacterial effects of gatifloxacin on one of canine periodontal pathogens, Porphyromonas gulae. The minimum inhibitory concentrations (MIC) of gatifloxacin and its bactericidal effects were investigated. Gatifloxacin inhibited the growth of the canine periodontopathic bacteria tested in broth. An MIC of 50 nM was found to be effective in inhibiting P. gulae. On performing adenosine triphosphate bioluminescence assay, gatifloxacin was found to exhibit bactericidal effects on the tested bacteria in a concentration-dependent manner. The safety of gatifloxacin in mammalian cells was evaluated by assessing the viability of rat bone marrow mesenchymal stem (BMMS) cells treated with gatifloxacin. Almost over 80% of BMMS cells survived after a 3-day culture when treated with 100 nM of gatifloxacin. These results indicate that locally administered gatifloxacin has the potential for being used to prevent canine periodontal infection.

Periodontal Disease, Antibiotics, Dog, Porphyromonas gulae, Veterinary Medicine

Miura, T. , Oda, Y. , Tanabe, K. , Shizawa, Y. , Ito, T. and Yang, L. (2022) Antimicrobial Effects of Gatifloxacin on Canine Periodontopathic Bacteria In Vitro. Journal of Biomedical Science and Engineering, 15, 89-96. doi: 10.4236/jbise.2022.152009.