PPT-Immune Response in a Food-borne Bacterial Infection

PATH 417A Jen Yong Case Foodborne bacterial infection One Too Many Hamburgers 10yearold Ronnie McDonald has developed abdominal cramps bloody diarrhea and a low grade fever. By: Jacob, Autumn, and Dolly . General Info . Infection in any part of your urinary system . Kidneys. Ureters. Bladder. Uretha. . Women have greater risk of getting an UTI . Antibiotics are typical treatment-John Coffey. with. ®. Three types of hazards that make food unsafe:. Biological. Pathogens that cause illness. Chemical. Cleaners, sanitizers, polishes. Physical. Bandages, dirt, glass/metal shavings. Hazards in Food Safety. Immunology. - the study of host defense mechanisms. Immunity. -. ability of the host to protect itself against foreign organisms. Resistance to disease.. Antigen (Ag)- . is a foreign substance that can elicit specific immune response (IR) when is immunogenic. Chapter 4. Introduction. Molecules recognized as “non-self” are antigens. Several mechanisms to protect itself . First level of protection include physical and biochemical-skin, acid in stomach. Second level of protection phagocytic cells, enzymes, and proteins. 1. Reservoir of Pathogen. Contamination of food. Viral or Parasitic. infection. Growth of pathogenic bacteria. Infection. Intoxication. Toxicoinfection. Food+ Live cells. Food +Toxin. Invasive Infection. Friday. Discuss . upcoming Food-Borne Illness Project . Monday. FBI Project. Bread cell phone and hand activity. Three slices of bread will come your way!. Dirty hand. Pass around the slice of bread and touch the white. Immune Response. Adaptive Immune. 2. Adaptive or Acquired Immune Response. Protects against infectious agents and abnormal body cells . Amplifies the inflammatory . response. Activates complement. 3. The relationship between viruses and the immune system is much more intimate than it is for most bacteria: viruses often modify the cells within which they replicate, thereby rendering them ‘foreign’ and susceptible to attack by sensitized lymphocytes; furthermore, . The Immune System. The immune system is a group of cells & soluble molecules, which interact & distinguish patterns in the body as “self” or “non-self,” in order to eliminate those that are “non-self.”. Disease: Whooping cough. Summary by Gurtaj Mahil. A chronic cough. 36-year-old Joseph has been suffering from multiple spells of violent coughing for 6 weeks. Prior to developing the chronic cough he had, what he describes as, a mild upper respiratory tract irritation, mild fever, runny nose and a cough that lasted about 3 days. More recently, and at the insistence of his spouse, he finally visits a drop-in clinic where the doctor asks him about his childhood vaccinations. Joseph reports that, to the best of his knowledge he had all the required shots but he admits to not having any since becoming an adult. Upon examining Joseph the doctor finds some redness in his throat but his lungs are clear and there are no enlarged lymph nodes in his neck. The doctor collects a throat swab to send to the laboratory, prescribes some codeine syrup and informs Joseph that the cough may last a few more weeks.. Immunological unresponsiveness to self is referred to as . tolerance. or . self-tolerance. Very important to human health. How is this achieved?. -cells with receptors for self-antigens are destroyed in the thymus or bone marrow (central tolerance). Dr. Refif S. Al-. Shawk. . Lec. 3. 2021-2022. Parasitic Infections. The term parasite encompasses a vast array of infectious protozoans (unicellular) and metazoans (helminths or worms). . Protozoan. infections. Lec. . 3. The relationship between viruses and the immune system is much more intimate than it is for most bacteria: viruses often modify the cells within which they replicate, thereby rendering them ‘foreign’ and susceptible to attack by sensitized lymphocytes; furthermore, . Food borne diseases (FBD) are acute illnesses associated with the recent consumption of food. The food involved is usually contaminated with a disease pathogen or toxicant. . Such food contains enough pathogens or toxicant necessary to make a person sick..