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Lecture 1 - innate.txt
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Commensals
Normal flora – microbes that co-exist with humans without causing disease
Pathogens
microbes capable of causing human disease
Colonization
the establishment of proliferating microbes on the skin or mucous membranes
Opportunists
organisms that do not cause disease in healthy individuals but in immune-suppressed
Infection
the proliferation of microbes in tissues with the concomitant induction of the immune system.
Disease
the proliferation of microbes in tissues, immune response and resulting damage and/or impairment of bodily functions.
Colonization
organisms are on the mucous membrane
Infection
organism has moved into the body they has penetrated the skin
Pathogen Carrier state
A pathogenic organism but is in a state where you are carrying and replicating but do not present with disease
Disease
a state where there is damage to cells or tissues
Innate Immunity - 5 mechanisms
Phagocytosis
Complement (Alternate Pathway)
Inflammation
Cytokine Release
NK cell killing
(0-96 hours)
Macrophage
Long lived
Innate – Tissue
Phagocytosis
Cytokine secretion
antigen presentation (Adaptive)
Neutrophil
short lived
Innate – blood
Phagocytosis
Granular release of antibacterial compounds
4 hallmarks of Inflammation
Rubor – Redness
calor – Heat
dolor – Pain
tumor – Swelling
Histamine is released by
Mast cells
Granulomas
body's attempt to confine non destroyed antigen, Chronic inflammation
IL-1
Fever
IL-6
Fever
TNF-alpha
Fever
IFN alpha
Interfere with viral replication
activation of NK cells
IFN beta
interfere with viral replication
activation of NK cells
Primary immunodeficiency
genetic defect causing deficiency
Secondary Immunodeficiency
immune suppressive agents (HIV)
Neutropenia
Decreased numbers
Chronic granulomatous disease(CGD)
X linked or Autosomal recessive
NADPH affected
formation of granulomas
More susceptible to catalase oxide positive bacteria
treated with gama interferon and prophylactic antibiotics
Leukocytes adhesion deficiency
CD18 defect -migration molecule
Autosomal recessive
impaired T,B cell function
infections with encapsulated bacteria
Chediak higashi syndrome
Defect in lysosome fusion
reduced killing ability
can present as albino
4 characteristics of adaptive immunity
Specificity
Activation
Memory
self-nonself
Author
jselim
ID
171128
Card Set
Lecture 1 - innate.txt
Description
1
Updated
2012-09-16T13:26:05Z
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