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Liver metastases get most of their blood supply primarily from the hepatic artery, whereas the normal liver cells get their blood supply from the portal circulation. [2] This allows for chemotherapeutic drugs to be delivered directly to the cancer cells if infused into the hepatic artery.
Intra-arterial chemotherapy: high dose chemotherapy is administered directly into the tumor-feeding arteries. [ 20 ] Portal vein embolization (PVE): delivery of embolic material into the portal vein feeding the lobe of liver containing the tumor(s) of interest to induce growth of the non-diseased lobe in order to have adequate liver function ...
This is because the brain has an extensive system in place to protect it from harmful chemicals. Drug transporters can pump out drugs from the brain and brain's blood vessel cells into the cerebrospinal fluid and blood circulation. These transporters pump out most chemotherapy drugs, which reduces their efficacy for treatment of brain tumors.
By attaching a chemotherapy drug to an antibody, doctors are able to deliver more potent cancer-fighting medicines directly into tumor cells, all while causing fewer side effects.
Radiation therapy is used to kill cancer cells; however, normal cells are also damaged in the process. Currently, therapeutic doses of radiation can be targeted to tumors with great accuracy using linear accelerators in radiation oncology; however, when irradiating using external beam radiotherapy, the beam will always need to travel through healthy tissue, and the normal liver tissue is very ...
Gemcitabine is a chemotherapy drug that works by killing any cells that are dividing. [11] Cancer cells divide rapidly and so are targeted at higher rates by gemcitabine, but many essential cells also divide rapidly, including cells in skin, the scalp, the stomach lining, and bone marrow, resulting in adverse effects. [17]: 265
The several types of hepatic artery treatments are based on the observation that tumor cells get nearly all their nutrients from the hepatic artery, while the normal cells of the liver get about 70-80 percent of their nutrients and 50% their oxygen supply from the portal vein, and thus can survive with the hepatic artery effectively blocked. [2]
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