(02) Lecture 2 Flashcards
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(Cellular Players: Platelets)
- born where?
- life span?
- major component for what?
- cover what surface at site of vascular injury?
- bone marrow
- 5-6 days
- hemostasis
- subendothelial surface
(vascular injury common at site of inflammation)
(Cellular Players: Platelets)
(Function)
- release what?
- Also release what that facilitate healing?
- chemical mediators of inflammation (vasoactive amines, coagulation factors and fibrinogen, cytokines, adhesion molecules, PG)
- growth factors (PDGF, FGF)
(Cellular Players: Basophils)
- terminally differentiated
- what percent of circulating WBCs
- granules contain what?
- similar to what?
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- <1%
- histamine
- mast cells
(Cellular Players: Mast Cells)
- important in what?
- Cytoplasmic granules contain what?
- Do their numbers increase significantly in inflammatory reactions?
- hypersensitivity reactions
- histamine, heparin (enzymes, chemotactic factors)
- not usually
(Cellular players: MAst Cells)
(Inflammatory mediator synthesis)
1-3. What three things?
- life span?
- does degranulation = cell death?
- where do they proliferate?
- leukotriens
- prostaglandins
- cytokines (stem cell factors)
- months
- no
- in tissue
(Mast Cell Functions)
(Acute Inflammation)
- what do they release that affects early vascular events?
- Late vascular events?
(Allergic and anaphylactic reactions)
- receptors fow what?
(4-5. What other two functions?)
- histamine
- chemical mediators (Leukotrines and prostagladnins - vasodilation, perm, pain)
- IgE (crosslinking)
- defense against parasites
- extracellular matrix remodeling
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(Basophils vs. mast cells)
- lack what?
- release mainly what two things?
- Seem to have a major role in what?
- heparin
- IL-4 and IL-13
- entering sites of inflammation and regulating inflammating
(Cellular Playes: Neutrophils)
- AKA PMNs, segmenters - one of three polymorphonuclear cell types
- terminally differentiated cells
- usually first recruited to site of insult
- life in blood?
- in tissues?
- at inflammatory sites?
- 4-6 hr
- 1-2 days
- shorter
(Cellular Players: Neutrophils)
- primarily circulating WBC in what species?
- What percentage in ruminants?
- central vs storage (marginal) pools?
- what are the “professional phagocytes”
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- dog, cat, +- horse
- 20-30%
- half and half
- neutrophils and macrophages
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(Bactericidal Proteins)
- eg defensin and BPI
- produced by what?
- Form what in microbial membranes?
- have also important role as chemotactic agents and in what?
- neutrophils (and other inflammatory cells) and epithelial cells of skin and mucous membranes
- pores
- would healing
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(Neutrophils)
(tissue damage by ROS)
- endothelial cell activation and damage
- inactivation of what?
- injury to what?
- increased or decreased cytokine expression?
- anti-proteases
- tissue cells
- increased
(Neutrophilia in CBC)
- caused by acute or chronic inflammation?
- What can induce?
- hemorrhage or hemolysis
- both
- physiologic (epinephrine), corticosteroid or stress induced
(Inflammatory Neutrophilia in CBC)
(Left Shift)
- increased what?
- Degenerative left shift = ?
- bands and metamylelocytes)
- immature > mature
(Neutrophils)
- most abundant granulocyte in circulation
- short life span
- first major defense against what?
- participate in acute and chronic inflammation rxns
- inflammatory leukogram with show what?
- bacterial infection
- neutrophilia with left shift
(Cellular Players - Eosinophils)
- terminally differentiated
- what percentage of circulating WBCs?
- circulating half life time?
- survive how long in tissues?
- Live in mucosa of GI, respiratory, reproductive tissues, and skin
- 2-5%
- 30 minutes
- 3-4 days
(Eosinophils)
- Contain major basic protein, eosinophil peroxidase (–> respiratory burst), eosinophil cationic protein, eosinophil neurotoxin
- All of these substances are highly aggressive to what and when released to what?
- Also produce a wide variety of what?
- highly aggressive to lipid membranes and when released to tissue (collgen)
- cytokines
(Eosinophils)
(Functions)
- motility - means they can do what?
- kill what? (mainly what?)
(Participate in allergic/hypersensitivity reactions)
- attracted by what?
- in the wake of what cell driven immune responses?
- move to site of infection
- parasites (mainly helminths)
- mast cells (histamine), IL-5, C5a, etc
- Th2 cell driven immune responses
(Eosinophils in CBC)
(Eosiophilia - is an increase)
(Eosinopenia)
- induced by what?
- cause what?
- What would occur to the following things in a stress leukogram?
Neutrophils, Monocytes, eosionphils, ly
- glucocorticoid/stress
- inhibit of release from bone marrow and sequestration in tissues
- up, up, down, down