Man's Food Notes - module 4 lesson 13
Man's Food Notes - module 4 lesson 13 FOS 2001
Popular in Man's Food
verified elite notetaker
Popular in Nutrition and Food Sciences
This 4 page Class Notes was uploaded by Haley Kairab on Thursday March 31, 2016. The Class Notes belongs to FOS 2001 at University of Florida taught by Dr. Agata Kowalewska in Spring 2016. Since its upload, it has received 26 views. For similar materials see Man's Food in Nutrition and Food Sciences at University of Florida.
Reviews for Man's Food Notes - module 4 lesson 13
Report this Material
What is Karma?
Karma is the currency of StudySoup.
You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!
Date Created: 03/31/16
FOS2001 Man's Food Module 4 Lesson 13 The Immune System, Food Allergy and Intolerance KEY TERMS: • Allergen a substance that causes an allergy • Anaphylaxis hypersensitivity to a substance or drug; also used as a synonym for anaphylactic chock, which is a severe allergic reaction to a foreign substance • Antibody a protein substance produced in the blood or tissues in response to a specific antigen, such as a bacterium or toxin. Antibodies destroy or weaken bacteria and neutralize organic poisons, thus forming the basis of immunity • Antigen a substance such as toxins, bacteria, or cells of transplanted organs that stimulates the production of an antibody • Immunology the branch of biomedicine concerned with the structure and function of the immune system Organs Involved with the Immune System • Organs important with the proper functioning of the immune system: ◦ Bone marrow ◦ Thymus gland ◦ Lymph nodes ◦ Tonsils/adenoids ◦ Spleen ◦ Peyer's patches • Tissues found in the small intestine that most antigens are exposed to during digestion • These organs are prone to contact with antigens • Protect the body from antigens Cell Function in the Immune System • 3 types of cells important to cell function: ◦ T Cells: derived form the thymus gland and help kill specific foreign matter • "quarterbacks" of the immune system and regulate it • May trigger the B cells (macrophages) when directing action of cells or kill foreign substance without help • Require an activation process ◦ B Cells: one purpose is to produce antibodies • Receptor cells on the surface are specific to different types of antigens • binds to the antigen and produces specific antibody to fight antigen • Process sends a signal to T Cell or macrophage that there is foreign substance in the body and triggers boosting of immune system ◦ Macrophages/phagocytes: cells that destroy the antigen (by engulfing and consuming it) • When an antigen enters the body an antibody is produced that binds to surface of bacterium macrophage comes along and has a identical receptor site on the surface • Recognizes that this is a bad/foreign substance by the antibody • Macrophage engulfs the bacterium and eats it away • Have ability to move through tissue and scavenge through foreign matter Antibodies • Immunoglobulin A, or antibody A: The major class of antibody found in saliva, tears, milk, and intestinal and respiratory secretions • Immunoglobulin M, or antibody M: The first antibody type secreted by the B cells • Immunoglobulin G, or antibody G: The principal class of antibody in human blood serum • Immunoglobulin E, or antibody E: The antibody that binds to mast cells and mediates allergies; it is the specific antibody produced to help contain an allergic reaction Immunity and the Immune System Response • The immune system has an "immunological memory" (remembers what it has dealt with before) • The body uses components of immunity only as they are needed ◦ First tries to fight the foreign substance using innate immunity ◦ If that doesn't work, it tries adaptive immunity then finally the specific immunological memory ◦ Most immunological memory antibodies (7080%) are located in intestinal tract and has greatest exposure to antigens • Immunopathology study of why things attack the immune system and how the immune system responds to these attacks • Immune system responses can be affected by: ◦ Genetics: Every individual embodies a unique genetic structure, and may respond differently to antigens than other people. ◦ Infections that mutate: If the immune system works so well, why do people get sick? The primary answer is because bacteria can and do mutate; they change form to survive, forcing the body to produce new antibodies to fight the new foreign matter, and increasing the immune system’s response time and capability Fighting Infection • Some invading microorganisms can overwhelm both innate and adaptive immunity systems • Antibiotics fight invaders when immune system can't • Antibiotics: drugs that kill enough of the microorganisms to give immune system a chance to work • Steps to take to boost immune system: extra vitamins or herbal supplements Allergens • Major types of food allergens are: ◦ Tree nuts ◦ Legumes especially peanuts and soybeans ◦ Fin fish, crustaceans, Mollusca: ◦ Cod, salmon, haddock ◦ Shrimp, prawns, crabs, crayfish, lobster ◦ Snails, mussels, oysters, scallops, clams, squid ◦ Milk and milk products ◦ Eggs ◦ Wheat • Introduction of an allergen to the body triggers the antibody E and starts immune system's response to the allergen • Most food allergens are large protein molecules, but small molecules may also elicit an allergic response if they bind to larger protein molecules • Allergy or hypersensitivity to some foods can produce a delayed reaction Food Intolerance • More common than food allergies • Symptoms can result in the body's inability to digest one or more components of the food and include diarrhea, cramps, bloating, and gas • A person with food intolerance can still consume small amounts of the food
Are you sure you want to buy this material for
You're already Subscribed!
Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'