Bactericidal activity of experimental samples of titanium alloy implants with a calcium phosphate coating and an antibacterial component against gram-negative pathogens (experimental study)
- Authors: Popkov A.V.1, Shastov A.L.1, Shipitsyna I.V.1, Kononovich N.A.1, Tverdokhlebov S.I.2, Kozelskaya A.I.2, Goreninskii S.I.2, Verzunova K.N.2
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Affiliations:
- Russian Ilizarov Scientific Center for Restorative Traumatology and Orthopaedics
- Tomsk Polytechnic University
- Issue: Vol 31, No 4 (2024)
- Pages: 517-526
- Section: Original study articles
- URL: https://bakhtiniada.ru/0869-8678/article/view/310533
- DOI: https://doi.org/10.17816/vto630216
- ID: 310533
Cite item
Abstract
BACKGROUND: Gram-negative bacteria, specifically P. aeruginosa, Acinetobacter spp., Klebsiella spp., and Enterobacter spp., can cause osteomyelitis. Two-stage treatment according to the Masquelet technique is considered effective; however, single-stage surgical treatment options are also being investigated. Submerged implants with bioactive antimicrobial calcium phosphate coating may prevent infectious complications, reduce the incidence of osteomyelitis relapses, and accelerate osteogenesis.
AIM: To assess bactericidal properties of experimental titanium implants with antimicrobial calcium phosphate coating against gram-negative bacteria.
MATERIALS AND METHODS: A single-center, continuous, prospective, open-label experimental in vitro study was performed. The disk diffusion test was used. BT6 titanium disks with calcium phosphate coating, impregnated with amikacin, cefepime, and cefotaxime (2.5/5.0/7.5 µg), were tested. Reference cultures: archival strains of Pseudomonas aeruginosa (АТСС 27853), Acinetobacter baumannii (АТСС 19606), and Klebsiella pneumoniae (АТСС 700603). The results were assessed by the inhibition zone diameter around a disk.
RESULTS: The study found that impregnating a bioactive metal base with amikacin and cefotaxime at a dose of ≥2.5 µg or cefepime at a dose of ≥7.5 µg results in bactericidal activity against Klebsiella pneumoniae. Amikacin at a dose of ≥5 µg and cefepime at a dose of ≥7.5 µg provide bactericidal activity against Pseudomonas aeruginosa. Antibiotic doses used in the study had no bactericidal effect against Acinetobacter baumannii. The bactericidal effect was only investigated in relation to archival gram-negative bacteria strains, which is a limitation of this study. Using clinical strains may yield different results.
CONCLUSION: Commonly used antibiotics may provide bactericidal properties of the surface of submerged implants designed for traumatic and orthopedic surgery, notably against gram-negative bacteria. However, the efficacy of implants depends on the selected antibiotic and its concentration.
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##article.viewOnOriginalSite##About the authors
Arnold V. Popkov
Russian Ilizarov Scientific Center for Restorative Traumatology and Orthopaedics
Email: apopkov.46@mail.ru
ORCID iD: 0000-0001-5791-1989
SPIN-code: 7311-9860
MD, Dr. Sci. (Medicine), professor
Russian Federation, 6 M. Ulyanova str., 640014 KurganAlexander L. Shastov
Russian Ilizarov Scientific Center for Restorative Traumatology and Orthopaedics
Email: alshastov@yandex.ru
ORCID iD: 0000-0001-7434-1404
SPIN-code: 4266-8306
MD, Cand. Sci. (Medicine)
Russian Federation, 6 M. Ulyanova str., 640014 KurganIrina V. Shipitsyna
Russian Ilizarov Scientific Center for Restorative Traumatology and Orthopaedics
Email: ivschimik@mail.ru
ORCID iD: 0000-0003-2012-3115
SPIN-code: 3039-5202
Cand. Sci. (Biology)
Russian Federation, 6 M. Ulyanova str., 640014 KurganNatalia A. Kononovich
Russian Ilizarov Scientific Center for Restorative Traumatology and Orthopaedics
Author for correspondence.
Email: n.a.kononovich@mail.ru
ORCID iD: 0000-0002-5990-8908
SPIN-code: 4698-3378
Cand. Sci. (Veterinary)
Russian Federation, 6 M. Ulyanova str., 640014 KurganSergei I. Tverdokhlebov
Tomsk Polytechnic University
Email: tverd@tpu.ru
ORCID iD: 0000-0002-2242-6358
SPIN-code: 9005-9207
Cand. Sci. (Physics and Mathematics), Assistant Professor
Russian Federation, TomskAnna I. Kozelskaya
Tomsk Polytechnic University
Email: kozelskayaai@tpu.ru
ORCID iD: 0000-0003-0168-0952
SPIN-code: 7317-8713
Cand. Sci. (Physics and Mathematics)
Russian Federation, TomskSemen I. Goreninskii
Tomsk Polytechnic University
Email: sig1@tpu.ru
ORCID iD: 0000-0003-0475-9973
SPIN-code: 4706-3457
Cand. Sci. (Engineering)
Russian Federation, TomskKseniya N. Verzunova
Tomsk Polytechnic University
Email: shumskaya_k@mail.ru
ORCID iD: 0009-0008-6038-9288
SPIN-code: 9506-7009
Russian Federation, Tomsk
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