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To evaluate whether a combination regimen of pentoxifylline, ursodeoxycholic acid and enoxaparin provides a protective effect on the liver parenchyma after high dose rate (HDR) brachytherapy.
A preventive effect of pentoxifylline, ursodeoxycholic acid and low dose low molecular weight heparin on pathological processes in healthy tissue after irradiation is described in clinical studies on percutaneous liver irradiation and on bone marrow transplantation. However, data remains inconclusive.
This exploratory study aims at assessing whether a protective effect of the combination of pentoxifylline, ursodeoxycholic acid and enoxaparin can be demonstrated in a limited number of patients with liver metastases of colorectal cancer after HDR brachytherapy.
All patients receive a single fraction CT/MRI-guided HDR-brachytherapy of colorectal liver metastases using Iridium-192 as a standard therapy. The follow-up consists of 4 MRI controls of the abdomen using the hepatocyte-specific contrast agent Gd-EOB-DTPA (Primovist) after 3 days, 6 weeks, 3 months and 6 months as well as blood samples and a questionnaire taken the same time.Within the study, 22 patients are given low dose low molecular weight heparin, pentoxifylline and ursodeoxycholic acid for 8 weeks starting with the preinterventional day. Another 22 patient will receive the standard therapy without the medication. After completion of the follow-up, MRI volume data of the lesion will be acquired and compared to the dosimetric treatment plan. Blood samples are tested for liver-specific and inflammatory laboratory parameters.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Prevention
Pentoxifylline, Ursodeoxycholic Acid, Enoxaparin
Clinic for Radiology and Nuclear Medicine
University of Magdeburg
Published on BioPortfolio: 2014-08-27T03:12:43-0400
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A METHYLXANTHINE derivative that inhibits phosphodiesterase and affects blood rheology. It improves blood flow by increasing erythrocyte and leukocyte flexibility. It also inhibits platelet aggregation. Pentoxifylline modulates immunologic activity by stimulating cytokine production.
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