What are the theories of amine theory, reuptake inhibition, and downregulation, and how do they relate to antidepressant action? Describe the additions of the neurotrophic/ plasticity theory to amine,...

What are the theories of amine theory, reuptake inhibition, and downregulation, and how do they relate to antidepressant action?

Describe the additions of the neurotrophic/ plasticity theory to amine, reuptake and downregulation theories—specifically— describe what happens with cAMP and BDNF