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Preventive Effect of Enoxaparin, Pentoxifylline and Ursodeoxycholic Acid to Radiation Induced Liver Toxicity

2014-08-27 03:12:43 | BioPortfolio

Summary

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.

Description

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.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Prevention

Conditions

Colorectal Cancer

Intervention

Pentoxifylline, Ursodeoxycholic Acid, Enoxaparin

Location

Clinic for Radiology and Nuclear Medicine
Magdeburg
Sachsen-Anhalt
Germany
39120

Status

Recruiting

Source

University of Magdeburg

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:12:43-0400

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Medical and Biotech [MESH] Definitions

Tumors or cancer of the COLON or the RECTUM or both. Risk factors for colorectal cancer include chronic ULCERATIVE COLITIS; FAMILIAL POLYPOSIS COLI; exposure to ASBESTOS; and irradiation of the CERVIX UTERI.

Tumor suppressor genes located in the 5q21 region on the long arm of human chromosome 5. The mutation of these genes is associated with the formation of colorectal cancer (MCC stands for mutated in colorectal cancer).

Tumor suppressor genes located in the 18q21-qter region of human chromosome 18. The absence of these genes is associated with the formation of colorectal cancer (DCC stands for deleted in colorectal cancer). The products of these genes show significant homology to neural cell adhesion molecules and other related cell surface glycoproteins.

A group of autosomal-dominant inherited diseases in which COLON CANCER arises in discrete adenomas. Unlike FAMILIAL POLYPOSIS COLI with hundreds of polyps, hereditary nonpolyposis colorectal neoplasms occur much later, in the fourth and fifth decades. HNPCC has been associated with germline mutations in mismatch repair (MMR) genes. It has been subdivided into Lynch syndrome I or site-specific colonic cancer, and LYNCH SYNDROME II which includes extracolonic cancer.

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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