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Related Experiment Video

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Microbial yield from infectious tissues pretreated by various methods: an invitro study.

Yuanqing Cai1, Xinyu Fang1, Lvheng Zhang1

  • 1Department of Orthopaedic Surgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China.

BMC Musculoskeletal Disorders
|February 22, 2021
PubMed
Summary
This summary is machine-generated.

Mechanical homogenization (MH) and dithiothreitol (DTT) significantly increase microbial yield from infectious tissues compared to other methods. These pretreatment techniques enhance bacterial detection, potentially improving infectious disease diagnosis.

Keywords:
Microbial recoveryPeriprosthetic joint infectionPeriprosthetic tissuesPretreatment methodsTissues

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Area of Science:

  • Microbiology
  • Infectious Diseases
  • Biotechnology

Background:

  • Accurate microbial yield from infectious tissues is crucial for diagnosing diseases.
  • Existing pretreatment methods may not optimally recover microorganisms from diverse tissue types.

Purpose of the Study:

  • To evaluate the efficacy of various pretreatment methods in maximizing microbial yield from infectious tissues.
  • To compare the performance of manual milling, mechanical homogenization, sonication, dithiothreitol, and direct culture.

Main Methods:

  • Infectious models were created using Staphylococcus aureus, Escherichia coli, and Candida albicans in sterile pork tissue.
  • Five pretreatment methods (MM, MH, SF, DTT, DC) were applied to assess microbial recovery.
  • Periprosthetic tissues from patients with periprosthetic joint infection (PJI) were used for clinical verification.

Main Results:

  • Mechanical homogenization (MH) yielded significantly higher microbial counts than manual milling (MM) and sonication (SF).
  • In internal infection models, MH surpassed SF, dithiothreitol (DTT), and direct culture (DC).
  • MH pretreatment of periprosthetic tissues resulted in significantly more bacterial colonies than other methods.

Conclusions:

  • MH and DTT significantly enhance microbial yield compared to DC, SF, and MM.
  • These methods offer potential for processing multiple tissue samples simultaneously.
  • Improved microbial recovery may lead to enhanced diagnostic sensitivity for infectious diseases.