OVERVIEW OF IMMUNE SYSTEM Flashcards
Refers primarily to anatomical,
cellular, and humoral defenses that
functions in the early stages of host
defense
Innate Immunity/Non-specific Immunity
(1st and 2nd Line of Defense)
Second line of defense:
Enumerate the cellular factors
- Phagocytes
- Basophils & Mast Cells
- NK cells
- APCs
Second line of defense:
Enumerate the non-cellular factors
- Complement System
- Cytokines
- INF
- Inflammatory reactions
- Acute reactants
Low ph of stomach and vagina
Acid
Example of flushing actions
blinking of eyelids
peristalsis
urination
Enumerate the Secretion of Factors
- Interleukin 1
- Interleukin 6
- Complement
- Hydrolytic enzymes
- Tumor necrosis
promotes inflammatory response
Interleukin 1
promotes innate immunity
Interleukin 6
promotes elimination of pathogens
through cell lysis
Complement
promotes inflammatory
response
Hydrolytic enzymes
kills tumor cells
Tumor necrosis
Increase rapidly due to infection, injury, or
trauma to the tissues
Acute Phase Reactants
Acute phase reactants are Produced primarily by
hepatocytes
(liver parenchymal cells) within 12 to 24 hours
in response to an increase in certain
intercellular signaling polypeptides called
cytokinesis
Other name for IFN-alpha
Leukocyte IFN
Primary producers of IFN alpha
Null lymphocytes
Other name for IFN-beta
Epithelial
Fibroblast IFN
Primary producers of IFN beta
Fibroblasts, epithelial cells, MACs
Function of IFN beta
Anti-viral
Other name for IFN-gamma
Immune IFN
Primary producers of IFN-gamma
T helper 1 cells, T cytotoxic cells
Cells that engulf and digest foreign materials
Phagocytes
Examples of phagocytes are
Neutrophils (PMNs)
Monocytes
Macrophages
Dendritic cells
Fixed Phagocytes
Locations of Macrophages (MACs):
Histocytes
Connective tissue
Locations of Macrophages (MACs):
Alveolar MACs
lungs
Locations of Macrophages (MACs):
Kupffer cells
liver
Locations of Macrophages (MACs):
Littoral cell
Spleen
Locations of Macrophages (MACs):
Mesangial cells
kidney
Locations of Macrophages (MACs):
Microglia
brain
Locations of Macrophages (MACs):
Osteoclasts
Bone
Locations of Macrophages (MACs):
Synovial A cells
Synovial fluid
Locations of Macrophages (MACs):
Hof-Bauer cells
Placenta
Locations of Macrophages (MACs):
Langerhans cells
Epidermis
Indirect interaction:
It is the enhancement of
phagocytosis (C3b, IgG1 and
IgG3)
Opsonization
Direct interaction:
Pattern Recognition Receptors
(PRRs): phagocytes use their
PRRs to recognize and adhere to
______
Pathogen Associater Molecular
Patterns (PAMPS)
Transcribe PRPs
Pattern Recognition Receptors
(PRRs)
Ingestion (Engulfment):
Vacuole + Pathogen = ________
PHAGOSOME
Example of oxygen dependent mechanisms which are toxic reactive oxygen intermediates
Superoxide anion
Hydrogen peroxide
Hydroxyl radical
Example of oxygen dependent mechanisms which are myeloperoxidase
Hypochlorite and highly toxic substances
Oxygen Independent Mechanisms:
It has an antibiotic like peptides made by phagocytes
Defensins
Example of digestive enzymes
Lysozymes and lactoferrin
NK cells that Exist in the body at birth
Nonspecific Immunity
NK cells that are not produced by immunologic insult
Nonspecific Immunity
Transcribe ADCC
Antibody Dependent Cellular
Cytotoxicity
NK cells Form ______ in Sheep RBC
Rosette
NK Cells:
Responsible for the NK cell exposed to IL-2 and IFN gamma
Lymphokine Activated Cell (LAK)
Transcribe LAK
Lymphokine Activated Cell (LAK)
Method of Killing
Formation of Pores
causing lysis
Perforins
Method of Killing
Programmed Cell Death
Apoptosis
Overall response of the body after tissue damage or invasion infectious agent
Inflammation
Inflammation:
Rubor
redness
Inflammation:
Calor
heat
Inflammation:
Tumor
swelling
Inflammation:
Dolor
pain
Inflammation:
Function Laesa
loss of function