5-fluoro-2-deoxycytidine (5-FLOOR-oh-2-dee-OK-see-SY-tih-deen)
A substance being studied in the treatment of some types of cancer. It may prevent the growth of tumors by stopping cancer cells from dividing and by killing them. It is a type of antimetabolite. Also called FdCyd. |
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5-FU
A drug used in the treatment of cancer. It is a type of antimetabolite. Also called fluorouracil. |
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5-HT3 receptor antagonist (…reh-SEP-ter an-TAG-uh-nist )
5-hydroxytryptamine 3 receptor antagonist. A type of drug used to treat certain types of irritable bowel syndrome and relieve nausea and vomiting. It is a type of antiemetic. Also called type 3 serotonin receptor antagonist and 5-hydroxytryptamine 3 receptor antagonist. |
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5-hydroxyindoleacetic acid (,,, hy-DROK-see-IN-dole-uh-SEE-tik A-sid)
5HIAA. A breakdown product of serotonin that is excreted in the urine. Serotonin is a hormone found at high levels in many body tissues. Serotonin and 5HIAA are produced in excess amounts by carcinoid tumors, and levels of these substances may be measured in the urine to test for carcinoid tumors. |
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5-hydroxytryptamine
A hormone found in the brain, platelets, digestive tract, and pineal gland. It acts both as a neurotransmitter (a substance that nerves use to send messages to one another) and a vasoconstrictor (a substance that causes blood vessels to narrow). A lack of 5-hydroxytryptamine in the brain is thought to be a cause of depression. Also called serotonin. |
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5-hydroxytryptamine 3 receptor antagonist (hy-DROK-see-TRIP-tuh-meen reh-SEP-ter an-TAG-uh-nist)
5-HT3 receptor antagonist. A type of drug used to treat certain types of irritable bowel syndrome and relieve nausea and vomiting. It is a type of antiemetic. Also called type 3 serotonin receptor antagonist and 5-HT3 receptor antagonist. |
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506U78
A drug used to treat certain types of T-cell acute lymphoblastic leukemia (T-ALL) and T-cell lymphoblastic lymphoma (T-LBL). It belongs to the family of drugs called antimetabolites. Also called nelarabine and Arranon. |
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5Q minus syndrome (...MY-nus SIN-drome)
5Q- syndrome. A rare disorder caused by loss of part of the long arm (Q arm) of human chromosome 5. This syndrome affects myeloid (bone marrow) cells, causing treatment-resistant anemia, and myelodysplastic syndromes that may lead to acute myelogenous leukemia. Also called 5Q- syndrome. |
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5Q- syndrome (...SIN-drome)
5Q minus syndrome. A rare disorder caused by loss of part of the long arm (Q arm) of human chromosome 5. This syndrome affects myeloid (bone marrow) cells, causing treatment-resistant anemia, and myelodysplastic syndromes that may lead to acute myelogenous leukemia. Also called 5Q minus syndrome. |
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