Category: An-An

  • 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.

  • 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 propylthiouracil all act by inhibiting the enzyme thyroid peroxidase…

  • 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…

  • Antithyroglobulin

    An antibody directed against thyroglobulin which is a key protein in the thyroid gland essential to the production of thyroid hormones (thyroxine and triiodothyronine). Antithyroglobulin antibodies can damage the thyroid gland and affect its function. Testing for antithyroglobulin antibodies in the blood is useful in the diagnosis of some thyroid and other disorders. Conditions in…

  • Antithymocyte globulin

    An immunosuppressive agent that selectively destroys T lymphocytes. Antithymocyte globulin is the gamma globulin fraction of antiserum from animals that have been immunized against human thymocytes. It is a polyclonal antibody. The uses of this drug include the prevention and treatment of transplant rejection, aplastic anemia, and other conditions in which immunosuppression may be indicated. Pretreatment with this…

  • Antispasmodic

    A medication that relieves, prevents, or lowers the incidence of muscle spasms, especially those of smooth muscle such as in the bowel wall.

  • Antisocial personality disorder

    A pervasive pattern of disregard for and violation of the rights of others and inability or unwillingness to conform to what are considered to be the norms of society. The disorder involves a history of chronic antisocial behavior that begins before the age of 15 and continues into adulthood. The disorder is manifested by a…

  • Antisocial personality

    A pervasive pattern of disregard for and violation of the rights of others and inability or unwillingness to conform to what are considered to be the norms of society. The disorder involves a history of chronic antisocial behavior that begins before the age of 15 and continues into adulthood. The disorder is manifested by a…

  • Antiseptic

    Something that discourages the growth of microorganisms. By contrast, aseptic refers to the absence of microorganisms.

  • Antisepsis

    Prevention of infection by inhibiting or arresting the growth and multiplication of germs (infectious agents). Antisepsis implies scrupulously clean and free of all living microorganisms. From the Greek roots anti- meaning against + sepsis against putrefaction = literally, against putrefaction.