79. Which statement is incorrect concerning chemotherapy? ? Only certain diseases can be treated with chemotherapy. ? Chemo can work throughout the whole body and has the advantage of treating distant metastatic sites. ? Chemo can be used to control a cancer by shrinking the tumors and/or stop the cancer from growing and spreading. ? Chemo can sometimes be palliative. ? Cancer can be treated with a single chemo drug, but often several drugs are used in a certain order or in certain combinations.
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Chemotherapy can be used to treat a wide range of cancers, although not all cancers are responsive to chemotherapy. Show more…
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Chemotherapy Complete the following statements to describe how chemotherapy may be used to treat cancer. Not all choices will be used. While localized therapy, chemotherapy treats the entire body to catch cancer cells that have spread from the original cancerous location. Most chemotherapeutic drugs kill cells by damaging the DNA or interfering with its synthesis. Medications that interfere by blocking DNA replication are called antimetabolites. Medications that block enzyme production are called alkylating agents. Medications that block enzymes, cell division, and cell membranes are called antitumor antibiotics. Medications that interfere with cell division or prevent enzymes needed for cell replication are called mitotic inhibitors. Medications that prevent enzymes from repairing DNA are called nitrosoureas.
Sri K.
Chemotherapy is a medical therapy most commonly used in cancer treatment. Why is it also used in gene therapy, such as in the case of individuals with sickle cell disease? a. It is designed to kill actively dividing cells and thus would directly affect blood stem cells. b. Chemotherapy targets specific, dysfunctional genes, allowing viral therapy to work more effectively. c. It is the best medical option patients have to get rid of all damaged red blood cells. d. It detects cells with genetic errors of cell division, so it would directly affect blood stem cells. e. Chemotherapy isn't used; radiation therapy is used instead because it can be targeted to work only on damaged cells.
Crystal W.
Many human cancers result when a normal gene mutates and leads to uncontrolled growth (a tumor). Genes that cause cancer when they mutate are called oncogenes. Chemotherapy is effective against many tumors because it targets rapidly dividing cells and kills them. Unfortunately, chemotherapy has many side effects, such as hair loss or nausea, because it also kills many of our normal cells that are rapidly dividing, such as those in the hair follicles or stomach lining.Many scientists and large pharmaceutical companies are excited about the prospects of exploiting the RNAi pathway to selectively inhibit oncogenes in lifethreatening tumors. Explain in very general terms how gene-silencing therapy might work to treat cancer and why this type of therapy would have fewer side effects than chemotherapy.
Madhur L.
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