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Related Experiment Video

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D-PLEX100 in an Abdominal Surgery Incision Model in Miniature Swine: Safety Study.

Yuval Ramot1, Shlomo Nedvetzki2, Sefi Rosenfeld2

  • 1Hadassah Medical Center, Hebrew University of Jerusalem, the Faculty of Medicine, Jerusalem, Israel.

Toxicologic Pathology
|June 12, 2020
PubMed
Summary

This study shows the biodegradable doxycycline/polymer-lipid encapsulation matrix (D-PLEX) is safe for abdominal surgical sites. D-PLEX degraded fully within six months with no adverse effects, supporting its potential to prevent surgical site infections.

Keywords:
biodegradabilitydrug delivery systemminiature swinepreclinical trialssafety evaluationsurgical site infection

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Area of Science:

  • Biomaterials Science
  • Surgical Innovation
  • Pharmacology

Background:

  • Surgical site infections (SSIs) are a significant cause of surgical complications.
  • A novel biodegradable polymer-lipid encapsulation matrix for controlled doxycycline release (D-PLEX) has been developed to mitigate SSIs.

Purpose of the Study:

  • To evaluate the safety and degradability of D-PLEX100 in an abdominal surgical site model.
  • To assess potential systemic toxicity and local tissue response to D-PLEX100.

Main Methods:

  • D-PLEX100 was applied to abdominal surgical incisions in Yucatan miniature swine.
  • Animals were monitored for up to 6 months, with comparisons to sham-control groups.
  • Toxicokinetic analysis of doxycycline plasma concentrations was performed.

Main Results:

  • D-PLEX100 remained localized to the incision site without migration.
  • No systemic toxicity or safety concerns were observed.
  • Full incision healing occurred by 6 months, with complete D-PLEX100 absorption within this period.
  • Doxycycline was detected in plasma for up to 15 days, with concentrations diminishing over time.

Conclusions:

  • D-PLEX100 demonstrates a favorable safety profile and degradability for abdominal surgical site applications.
  • The findings support further clinical investigation for preventing human abdominal SSIs.