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reagin

 [re´ah-jin]
antibody of a specialized immunoglobulin class (IgE) which attaches to tissue cells of the same species from which it is derived, and which interacts with its antigen to induce the release of histamine and other vasoactive amines. A form of cytotropic antibody, it is present in the serum of naturally hypersensitive individuals and can confer specific immediate (type I) hypersensitivity in nonreactive individuals. adj., adj reagin´ic.

re·a·gin

(rē-ā'jin),
1. Wolff-Eisner term for antibody.
2. Old term for the "Wassermann" antibody; not to be confused with the Prausnitz-Küstner antibody.
3. Antibodies that mediate immediate hypersensitivity reactions (IgE in humans).

reagin

/re·a·gin/ (re´ah-jin) the antibody that mediates immediate hypersensitivity reactions; in humans, IgE.reagin´ic

reagin

(rē-ā′jĭn)
n.
1. An antibody found in the blood of individuals having a genetic predisposition to allergies.
2. A substance present in the blood of individuals having a positive serological test for syphilis.

re′a·gin′ic (rē′ə-jĭn′ĭk) adj.
re′a·gin′i·cal·ly adv.

reagin

[rē′ājin]
Etymology: L, re + agere
1 an antibody associated with human atopy, such as asthma and hay fever. It attaches to mast cells and basophils and sensitizes the skin and other tissues. In antigen-antibody reactions it triggers the release of histamine and other mediators that cause atopic symptoms.
2 a nonspecific, nontreponemal antibody-like substance found in the serum of individuals with syphilis. It can combine with an antigen prepared as a lipid extract of normal tissue, a phenomenon that constitutes the basis of the serological tests for syphilis. reaginic, adj.

re·a·gin

(rē-ā'jin)
1. Wolff-Eisner term for antibody.
2. Antibodies that mediate immediate hypersensitivity reactions (IgE in humans).
3. Synonym(s): homocytotropic antibody.

reagin(s) (rē´ājin),

n noncommittal term used for antibodies or antibody-like substances that differ in several respects from ordinary antibodies. It refers to the antibodies of allergic conditions (atopy) and to the antibody (reagin) concerned with the flocculation and complement fixation tests for syphilis.

reagin

an old term for immunoglobulin E antibody (IgE).

atopic reagin
the antibody responsible for hypersensitivity reactions to specific substances with signs of atopy resulting.
References in periodicals archive ?
To read the stories since Reagins was made the surprise choice to succeed Bill Stoneman, it sounds as if the 41-year old is just a figurehead in the whole process, baseball's version of the Queen of England.
The suggestions are aplenty, starting with the most popular one: that Mike Scioscia is really running the show on the player-personnel side and Reagins is there to observe.
But while Reagins crunched the numbers for the Hunter deal, it was widely reported Moreno was the one who used strong-armed negotiating tactics, telling Hunter's agent Larry Reynolds that he had limited time to accept the Angels' offer of five years, $90million.
Is he suddenly comfortable with sitting back and simply answering a question or two if Reagins isn't sure of something?
To his credit, Reagins is willing to take the blame if things go bad but the reality is that Angels decision making is done as a democracy.
Mike is going to have input, he's very bright and he is an outstanding baseball man," Reagins said.
Being so meticulous helps Reagins to be confident with his decision making.
The Angels have been quiet since the winter meetings last month, but Reagins said that doesn't mean everybody in the front office has been sitting on their hands.
Silence doesn't mean were not working hard every day," Reagins said.
Reagins has as much ammunition as anybody to get another significant deal done.
By trading Orlando Cabrera to the Chicago White Sox for the right-handed Garland, Reagins created a glut in starting pitching that could be used to swing a deal for a proven slugger.
Reagins is likely to re-establish discussions this week with the Florida Marlins about bringing slugging third baseman Miguel Cabrera to Angel Stadium.