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Background: Locoregional recurrence significantly impacts survival and quality of life in patients with ovarian carcinoma. We hypothesize that local administration of paclitaxel-loaded expansile nanoparticles (pax-eNP) at the time of cytoreductive surgery decreases local tumor recurrence.
Methods: In vitro cytotoxicity of pax-eNP was assessed against both the OVCAR-3 human ovarian cancer cell line and tumor cells isolated from a malignant pleural effusion from a patient with multidrug-resistant ovarian cancer. A murine xenogenic model involving surgical cytoreduction of established OVCAR-3 intra-abdominal tumor was used to evaluate in vivo efficacy of intraoperative intraperitoneal (IP) injection of 10 mg/kg of paclitaxel either as pax-eNP or paclitaxel in Cremophor EL/ethanol solution (pax-C/E) versus empty eNP controls. Cytoreductive surgery and intraoperative treatment were performed 4 weeks after established tumor. All animals were sacrificed when empty eNP controls displayed extensive evidence of disease progression.
Results: Labeled-eNP entered tumor cells in vitro within 4 h and specifically accumulated at sites of tumor in vivo. Pax-eNP exhibited dose-dependent cytotoxicity in both OVCAR-3 and patient tumor cells isolated from a malignant pleural effusion and effectively prevented tumor recurrence following debulking (p = 0.003 vs. empty eNP). Furthermore, pax-eNP-treated animals did not develop severe recurrent carcinomatosis compared with 43 % of the pax-C/E-treated cohort, suggesting that single-dose intracavitary pax-eNP is more effective than an equivalent dose of pax-C/E.
Conclusions: Expansile nanoparticles readily enter human ovarian tumor cells and localize to sites of tumor in vivo with pax-eNP cytotoxicity resulting in superior inhibition of locoregional tumor recurrence following cytoreductive surgery.
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http://dx.doi.org/10.1245/s10434-012-2696-5 | DOI Listing |
J Int Med Res
December 2024
Department of Urology, Shaoxing People's Hospital, Shaoxing, Zhejiang, China.
renal transplant carcinoma, especially in the context of bilateral renal carcinoma, is rare and often presents as small, low-grade papillary renal cell carcinoma (RCC). There is currently no consensus or effective treatment for advanced metastatic RCC after kidney transplantation. A 40-year-old man developed renal transplant carcinoma with venous thrombus and lung metastases 13 years after transplantation.
View Article and Find Full Text PDFPurpose: There is no current standard treatment regimen for carcinoma ex pleomorphic adenoma (CXPA) of the lacrimal gland. Neoadjuvant intraarterial cytoreductive chemotherapy (IACC) followed by multimodal therapy has achieved good locoregional control in adenoid cystic carcinoma of the lacrimal gland. We reviewed our experience with neoadjuvant IACC followed by multimodal therapy for CXPA of the lacrimal gland.
View Article and Find Full Text PDFPleura Peritoneum
December 2024
Faculty of Health, Aarhus University, Aarhus, Denmark.
Objectives: Cancer cells can activate coagulation and inhibit fibrinolysis. The aim was to investigate the association between the burden of peritoneal metastases from colorectal cancer (PM-CRC) and biomarkers reflecting thrombin generation and fibrinolysis.
Methods: A cohort of 55 patients with PM-CRC scheduled for cytoreductive surgery.
BMC Cancer
December 2024
Department of Obstetrics and Gynecology, National Clinical Research Centre for Obstetric and Gynecologic Diseases, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Background: Epithelial ovarian cancer (EOC) is a lethal form of gynecological malignancy. Some EOC patients experience relapse after standard primary debulking surgery (PDS) and adjuvant chemotherapy (ACT). Identifying molecular residual disease (MRD) by circulating tumor DNA (ctDNA) detection can timely signal the potential for relapse.
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