Scholarlink

Background <p>Animal models are essential for testing new pressurized intraperitoneal aerosol chemotherapy (PIPAC) protocols; however, no immunocompetent animal model of peritoneal surface malignancies (PSMs) treated with PIPAC has been established. This study evaluated the feasibility, safety, and oncological efficacy of PIPAC in a rabbit PSM model.</p> Methods <p>The study was conducted in two phases: (1) Feasibility Assessment: Three healthy rabbits underwent three consecutive PIPAC procedures (saline) at weekly intervals. The rabbits’ well-being, morbidity, mortality, and histological changes were monitored. (2) Treatment Phase: Rabbits with PSM were treated with PIPAC using oxaliplatin, cisplatin-doxorubicin, or saline. Parameters such as animal well-being, ascites volume, morbidity, Peritoneal Cancer Index (PCI), histological response (Peritoneal Regression Grading Score [PRGS]), tumor cell proliferation/apoptosis, and circulating tumor DNA (ctDNA) levels were assessed.</p> Results <p>PIPAC was feasible and safe, with no increased morbidity or mortality. PIPAC demonstrated antitumor efficacy with lower PCI (control 21.6 vs. oxaliplatin 9.2 vs. cisplatin-doxorubicin 10.2; <i>p</i>&#xa0;&lt;&#xa0;0.001), improved histological response (PRGS: control 3.38 vs. oxaliplatin 1.95 vs. cisplatin-doxorubicin 1.85; <i>p</i>&#xa0;=&#xa0;0.01), and reduced tumor cell proliferation (control 5.3% vs. oxaliplatin 0.82% vs. cisplatin-doxorubicin 0.62%; <i>p</i>&#xa0;&lt;&#xa0;0.0001). ctDNA levels showed promise for monitoring treatment response, warranting further investigation.</p> Conclusion <p>This study confirms the feasibility and effectiveness of PIPAC with oxaliplatin or cisplatin-doxorubicin in rabbits with PSM. The model provides a foundation for future research on PIPAC protocols and related treatments.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Feasibility of Pressurized Intraperitoneal Aerosol Chemotherapy (PIPAC) in a Rabbit Model of Peritoneal Metastases: PIPALIM Project

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年4月25日

查看全文
  • Sylvia M. Bardet,
  • Marie-Laure Perrin,
  • Valentin David,
  • Catherine Yardin,
  • Alain Chaunavel,
  • Karine Durand,
  • Gaelle Maillan,
  • Aymeric Rouchaud,
  • Sylvaine Durand Fontanier,
  • Abdelkader Taibi

摘要

Background

Animal models are essential for testing new pressurized intraperitoneal aerosol chemotherapy (PIPAC) protocols; however, no immunocompetent animal model of peritoneal surface malignancies (PSMs) treated with PIPAC has been established. This study evaluated the feasibility, safety, and oncological efficacy of PIPAC in a rabbit PSM model.

Methods

The study was conducted in two phases: (1) Feasibility Assessment: Three healthy rabbits underwent three consecutive PIPAC procedures (saline) at weekly intervals. The rabbits’ well-being, morbidity, mortality, and histological changes were monitored. (2) Treatment Phase: Rabbits with PSM were treated with PIPAC using oxaliplatin, cisplatin-doxorubicin, or saline. Parameters such as animal well-being, ascites volume, morbidity, Peritoneal Cancer Index (PCI), histological response (Peritoneal Regression Grading Score [PRGS]), tumor cell proliferation/apoptosis, and circulating tumor DNA (ctDNA) levels were assessed.

Results

PIPAC was feasible and safe, with no increased morbidity or mortality. PIPAC demonstrated antitumor efficacy with lower PCI (control 21.6 vs. oxaliplatin 9.2 vs. cisplatin-doxorubicin 10.2; p < 0.001), improved histological response (PRGS: control 3.38 vs. oxaliplatin 1.95 vs. cisplatin-doxorubicin 1.85; p = 0.01), and reduced tumor cell proliferation (control 5.3% vs. oxaliplatin 0.82% vs. cisplatin-doxorubicin 0.62%; p < 0.0001). ctDNA levels showed promise for monitoring treatment response, warranting further investigation.

Conclusion

This study confirms the feasibility and effectiveness of PIPAC with oxaliplatin or cisplatin-doxorubicin in rabbits with PSM. The model provides a foundation for future research on PIPAC protocols and related treatments.