Antithyroid antibody: An antibody directed against the thyroid gland, a gland which produces thyroid hormones (such as, for example, thyroxine and triiodothyronine). Antithyroid antibodies can be associated with inflammation of the thyroid gland and affect its function. Antithyroglobulin and antimicrosomal antibodies are examples of antithyroid antibodies.
Testing for antithyroid antibodies in the blood is useful in the diagnosis of some thyroid and other disorders. Conditions in which there may be antithyroglobulin antibodies include: Hashimoto thyroiditis (an autoimmune thyroid disease), Graves disease (overactivity of the thyroid), hypothyroidism (underactivity of the thyroid), thyroid cancer, lupus, rheumatoid arthritis, autoimmune hemolytic anemia and Sjogren syndrome.
- Antithyroid drug
Antithyroid drug: A drug directed against the thyroid gland. The antithyroid drugs include carbimazole, methimazole, and propylthiouracil (PTU). These drugs are used to treat hyperthyroidism (overactivity of the thyroid gland) in order to reduce the excessive thyroid activity before surgery and to treat and maintain patients not having surgery. Carbimazole, its active metabolite methimazole, and […]
Antitoxin: An antibody produced in response to and capable of neutralizing a specific biologic toxin such as those that cause diphtheria, gas gangrene, or tetanus. Antitoxins are used prophylactically and therapeutically.
Antivenin: Antibodies created in the blood of a horse or sheep when the animal is injected with snake venom. Antivenin acts by neutralizing snake venom that has entered the body. Also called antivenom, snake antivenin, or snake antivenom. Other spellings: antivenom
Antiviral: An agent that kills a virus or that suppresses its ability to replicate and, hence, inhibits its capability to multiply and reproduce. For example, amantadine (Symmetrel) is a synthetic antiviral. It acts by inhibiting the multiplication of the influenza A virus. It was used to lessen the severity of the disease, particularly in individuals […]
- Antiviral agent
Antiviral agent: A medication or another agent that kills viruses or inhibits their capability to reproduce.