BioScience Dictionary

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Ot.

Found Allergic 21 times.

Displaying results 1 to 10.

1. Adrenal cortex
This is the outer portion of the adrenal gland ; it secretes hormone s such as hydrocortisone (a glucocortoid) and aldosterone (a mineralocorticoid). Glucocortoids help cells synthesize glucose , catabolize protein s, mobilize free fatty acid s, and inhibit inflammation in allergic responses. Mineralocortoids regulate the levels of minerals such as sodium and potassium in the blood.

2. Adrenocorticotrophic hormone (ACTH)
A peptide hormone produced by the anterior pituitary gland . It stimulates the adrenal cortex to secrete glucocorticoid hormones, which help cells synthesize glucose , catabolize proteins , mobilize free fatty acid s, and inhibit inflammation in allergic responses.

3. Allergen
Something which can cause an allergic reaction. For example, ragweed pollen is the allergen which causes hay fever.

4. Allergens
Antigens that provoke an allergic reaction.

5. Anaphylactic shock (anaphylaxis, type I reaction)
A potentially fatal form of shock brought on by an extreme allergic reaction or immune response; symptoms include a sudden drop in blood pressure, difficulty in breathing, reduced body temperature, and nausea.

6. Anaphylactoid
Resembling anaphylaxis , an immediate, transient allergic reaction.

7. Anaphylaxis
A severe allergic reaction in which histamine is released into the circulatory system; occurs upon subsequent exposure to a particular antigen ; also called anaphylactic shock.

8. Atopy
An allergic reaction with strong family tendencies.

9. Desensitization
A method to reduce or stop a response such as an allergic reaction to something. For instance, if a person with diabetes has a bad reaction to taking a full dose of beef insulin , the doctor gives the person a very small amount of the insulin at first. Over a period of time, larger doses are given until the person is taking the full dose. This is one way to help the body get used to the full dose and to avoid having the allergic reaction.

10. Freund's adjuvant
The complete version of this immunostimulating adjuvant contains heat-killed tuberculosis bacteria emulsified in white mineral oil. It is used in immunological research involving lab animals, but not in humans, since it could cause allergic responses or autoimmune problems. The bacterial cells are omitted in the incomplete verson of the adjuvant.

View web definitions »

Learn more about Allergic »