May not be recommended for people with certain heart conditions or heart-related risk. viagra side effects for men Herceptin also generally cannot be given with other chemotherapy medications that can affect the heart. Tykerb (chemical name: lapatinib) is a newer form of anti-her2 therapy that works inside the cell, rather than at the cell surface as herceptin does. Inside her2-positive breast cancer cells, her2 receptors use protein signals, called kinases, to cause the cell to grow and divide abnormally. viagra viagra or Kinases control how much energy the cells have to grow and multiply. viagra prescription in canada Breast cancer cells that overexpress her2 can have too much kinase activity, so the cancer cells grow too much, too fast. Tykerb works by interfering with her2-related kinases inside the cell, limiting the amount of energy breast cancer cells have to grow and multiply. Tykerb is taken by mouth rather than intravenously (through a vein). cheap viagra prices uk Right now, tykerb can be used in combination with the chemotherapy medication xeloda (chemical name: capecitabine) to treat advanced, her2-positive breast cancer that has stopped responding to other herceptin-chemotherapy combinations. Other targeted therapies like hormonal therapy and her2-targeted therapies, other targeted therapies are designed to interfere with specific processes that breast cancer cells use to grow and thrive. Just one example is avastin (chemical name: bevacizumab), a medication that targets a protein called vegf, or vascular endothelial growth factor. generic viagra Vegf plays a key role in stimulating the process cancer cells use to create new blood vessels, which is known as angiogenesis. real viagra without prescription Cancer cells have to create new blood vessels so they can get the oxygen and nutrients they need to grow and thrive. buy viagra Avastin works by attaching itself to vegf, which can prevent it from stimulating the formation and growth of new blood vessels. Avastin can be used in combination with a chemotherapy medication called taxol (chemical name: paclitaxel) to treat advanced breast cancer. how to buy generic viagra These and other forms of targeted therapy are still under investigation. viagra online Welcome to the home of
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Date Created: Thu Feb 5 19:31:03 2009