Transplant Immunology Flashcards

1
Q

Which part of the immune system is specific or non-specific?

A

Specific
-Adaptive
Non-Specific
-Innate

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2
Q

Exterior defenses of the innate immune system

A
skin
mucus
cilia
saliva
low pH
GI tract
normal flora
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3
Q

Exterior defenses of the adaptive immune system

A

NONE

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4
Q

Specificity of Innate Immune System

A

Limited and Fixed

(Non-specific)

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5
Q

Specificity of Adaptive Immune System

A

Extensive

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6
Q

Which type of immune system has memory?

A

Adaptive

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7
Q

Time it takes for each type of immune system to respond

A

Innate
-hours
Adaptive
-days

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8
Q

Soluble factors of the Innate Immune System

A
Lysozymes
Complement
C-Reactive Protein
Interferons
Antimicrobial Peptides
Mannose Binding Lectin
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9
Q

Soluble factors of the Adaptive Immune System

A

Antibodies

Cytokines

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10
Q

Cell types of the Innate Immune System

A
Neutrophils
Monocytes
Macrophages
Natural Killer Cells
Eosinophils
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11
Q

Cell types of the Adaptive Immune System

A
T lymphocytes (Tc and Th)
B lymphocytes (memory and effector)
  -aka plasma cells
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12
Q

What does it mean that the innate immune system’s specificity is limited and fixed?

A

It cannot learn and does not have a memory.

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13
Q

Neutrophil

A

Granulocyte

  • first responder
    • small eater (phagocyte)
      • esp if coated with IgG
    • contain lysosomes
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14
Q

Segs vs Bands

A
Segs
 -mature neutrophils
 -float in blood
Bands
 -immature neutrophils
 -not in circulation
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15
Q

Left Shift

A

Shift from Segs to Bands in blood
-indicating neutrophil response to infxn
(usually bacterial)

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16
Q

Eosinophils

A
THINK "PARASITES" or adverse drug rxn
Granulocytes
-also phagocytic
   -items too big for neutrophils
-activated by IgE
Found near
 -parasite infxns
 -allergic rxn
 -around antiB-antigen complex
17
Q

Monocytes and Macrophages

A
Phagocytes
Mononucleated
Monocytes - blood
Macrophages - tissues
Macrophages are more active 
 and have more Fc and compliment receptors
Macrophages differentiate into:
 1. Kupffer Cells in liver
 2. Osteoclasts in bone
 3. microglial cells in CNS
18
Q

Basophils

A

Granulocytes
Release inflame mediators
-Histamine
Bloodstream cells assoc w IgE

19
Q

Mast Cells

A

Think “ALLERGIES”
Release: Histamine,
heparin, and serotonin, etc.
Assoc w IgE

20
Q

Main Functions of the Complement System in the Immune Response

A
  1. Lyse
  2. Stim chemotaxis of phagocytes
  3. Coat (opsonize) foreign paths
  4. Clear immune complexes
21
Q

Three signals req’d for T Cell activation

A
  1. Antigen presentation
    - with MHC
  2. Co-stimulation signal
    - CD 80/86
  3. Interaction of IL-2 with IL-2 Receptor
22
Q

Antibody Mediated Rejection, think…

A

MHC II

23
Q

Cellular Rejection, think…

A

MHC I

24
Q

Antigen presenting cells

A
  1. Macrophages
  2. Dendritic Cells
  3. B Cells
    • B cells only present antigen they make aBs for
25
Q

Three signals req’d for T Cell activation

A
  1. Antigen presentation
    - with MHC
  2. Co-stimulation signal
    - CD 80/86
    - “secret handshake”
  3. Interaction of IL-2 with IL-2 Receptor
    - signal to speed up proliferation
26
Q

First immunoglobulin to respond

A

IgM
Pentamer
No Fc portion b/c pentamer
Excellent activator of compliment

27
Q

Immunoglobulin for long term immunity

A

IgG
Monomer
80% of serum antibodies
Can cross the placenta

28
Q

IgA

A

secretions

dimer

29
Q

IgE

A

Asthma or hay fever