How are the subsets of the Classical macrophage
activation and the Alternate macrophage activation regulated?
How are the subsets of the Classical macrophage
activation and the Alternate macrophage activation regulated?
Solutions
Expert Solution
The term macrophage
activation was introduced by Mackanew in 1960 ' s
. macrophages are endowed with
avariety of receptors for lineage determining growth
factors , T helper cell cytokinesis , and B cell ,host
, and microbial products . in tissyes , macrophages
mature and are activated in a dynamic response to combinations of
there stimuli to acqurie specalised functional phenotypes
, the concept of classic and alternative activation ,
also termed M1 and M2 to mimic . macrophage evolved in simple
multicellar organims to performphagocytic clearence of dying cells
in development and adult life , and to protect the host through
innate immunity. macrophages are key modulators and effector cells
in the immune response , their activation influences and responds
to other arms ofthe immune system . genetic functional signature
acquried during maturation and
activation and considerd
M1M2 in model of macrophage polarisation , in vitro
studies , macrophage activation and as disscussed ,ko
animals for key cytokinesis and receptors have established a role
for some of these in the development and maturation of
macrophages. M1 and M2 activation display differences
but also overlapping effects that need
clrification and a more dynamic
appreciation of the activation process.
Describe the classical pathway of complement activation in the
absence of antibodies and how it is used during an innate immune
response to clear the pathogen.
Which of the following statements does not describe the
classical activation pathway of complement?
A) Initiation of the classical pathway of the complement system
requires formation of an antibody antigen complex.
B) The classical pathway results in complement activation of the
inflammatory response only.
C) The classical pathway converges with the alternative pathway,
resulting in the same possible complement-mediated immune
responses.
D) The classical pathway is an example of an adaptive immune
response.
Study Guide: Topic 10 Functions of Effector T cells:
1) Explain why classical activation of
macrophages by TH1 cells is needed in order to clear out
some pathogens.
2) Describe how perforin and granzymes released
by CTLs activate apoptosis in target cells. Be detailed and
specific in your response.
Why are financial institutions regulated? How are they
regulated? What are liabilities of depository institutions? What
are the assets of depository institutions? How can depository
manage the risk associated with each? What are depository
institution regulated even more than other financial
institutions?
1a. Explain how chemically regulated channels differ from
voltage-regulated channels and the nature of excitatory and
inhibitory postsynaptic potentials.
1b. Explain how ligand-gated channels are opened, using
nicotinic ACh receptors as an example.
1c. Explain how ligand-gated channels operate, using muscarinic
ACh receptors as an example.
1d. Describe where stimulatory and inhibitory effects of
muscarinic ACh receptors occur and how these effects are
produced.
1e. Compare the properties of EPSPs and action potentials,
identify where in a neuron these are