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. 2021 Feb 8;6(8):2569–2612. doi: 10.1016/j.bioactmat.2021.01.030

Table 7.

In vivo results of antibacterial stainless steel.

Year Antibacterial stainless steel Animal model In vivo results [Ref.]
2011 317L-4.5Cu Japanese white rabbits Strong antimicrobial activity, anti-inflammatory ability and strong promoting osteogenesis in vivo:
  • 1)

    317L-Cu screw tracts were negative for bacterial growth

  • 2)

    The soft-tissues and bone connected the 317L-4.5Cu screws were observed without inflammation or gross infection.

  • 3)

    317L-Cu implanted screws showed strong osteoid while 317L screws showed weaker osteoid growth.

  • 4)

    The expression of insulin-like growth factor-1 (IGF-1) in osteoblasts around 317L-4.5Cu screws tracts increased compared with 317L screws

[214]
2014 317L-4.5Cu Sprague-Dawley rats Strong anti-inflammatory ability, superior bone-implant integration and promoting osteogenesis in vivo:
  • 1)

    No inflammation was found in the bone tissue post implantation compared with 317L.

  • 2)

    The Cu-containing stainless steel implant demonstrated superior bone-implant integration.

  • 3)

    Faster bone formation was found on the Cu-containing stainless steel samples as compared to the 317L SS.

[246]
2016 317L-4.5Cu zebrafish embryos No in vivo cytotoxicity:
  • 1)

    The rate and time of hatching, mortality and touch response of the larval zebrafish were similar on 317L and 317L-Cu incubated samples.

  • 2)

    There was no malformations on embryos and larval zebrafish incubated on the 317L-Cu SS.

[32]
2017 317L-4.5Cu Sprague-Dawley rats Promoting osteogenesis:
  • 1)

    The callus evolution efficiency and the fracture healing speed were superior for 317L-Cu

  • 2)

    Higher osteogenic efficiency at 6 weeks, and increased Runx2 expression were observed in the callus for 317L-Cu

  • 3)

    The mechanical strength of the fracture site in the case of 317L-4.5 was much better than that of the control group

[250]
2020 316L-3.77Cu Sprague-Dawley rats Implant-related infection was also alleviated by 316L-Cu SS [212]