Agent, antiprotozoal: An agent that destroys protozoa or inhibits their growth and ability to reproduce.
A few of the protozoa of medical importance include Plasmodium (the cause of malaria); Entamoeba histolytica (the cause of amebiasis, amebic dysentery) and Trichomonas vaginalis (a cause of vaginal infection); and Pneumocystis carinii (a common cause of pneumonia [PCP] in immunodeficient persons).
Some antiprotozoal drugs include the antimalarials Aralen (chloroquine), Daraprim (pyrimethamine), Lariam (mefloquine) and Plaquenil (hydroxychloroquine); Flagyl (metronidazole) which is active against Entamoeba histolytica and Trichomonas vaginalis; and Mepron (atovaquone) for Pneumocystis carinii.
- Agent, antiviral
Agent, antiviral: An agent that kills viruses or suppresses their replication and, hence, inhibits their capability to multiply and reproduce. For example, amantadine (Symmetrel) is a synthetic (man-made) drug that inhibits the multiplication of the influenza A virus and was once used to prevent the flu. Safer medicines such as oseltamivir (Tamiflu) and zanamivir (Relenza) […]
- Agent, tocolytic
Agent, tocolytic: A medication that can inhibit labor, slow down or halt the contractions of the uterus. Tocolytic agents are widely used today to treat premature labor and permit pregnancy to proceed so the fetus can gain in size and maturity before birth.
Aggressive: In oncology, quickly growing, tending to spread rapidly. As, for example, an aggressive tumor.
Ageusia: An inability to taste sweet, sour, bitter, or salty substances. People who can taste sweet, sour, bitter, or salty substances but have a reduced ability to do so are said to have hypogeusia.
- Aggressive angiomyxoma
Aggressive angiomyxoma: A slow-growing tumor of stromal cells which occurs primarily in the genital and pelvic regions. This tumor is much more common in women. It can range from relatively small tumors to football-size masses in the pelvis. The histologic appearance of the tumor under the microscope is rather distinctive. Treatment consists of surgical excision […]