Surveillance, Phagocytosis, and Inflammation: How Never-Resting Microglia Influence Adult Hippocampal Neurogenesis

Table 1

Summary of factors secreted by microglia and the potential effect they have on neuroprogenitors in vitro.

Microglia secreted; factors	Reference	Modulation of neural progenitor cells	Reference
BDNF	[18]	Differentiation	[19]
EGF	[20]	Survival, expansion, proliferation, differentiation	[21]
FGF𝛽	[22]	Survival and expansion	[23]
GDNF	[24]	Survival, migration, and differentiation	[25]
IGF-1	[21]	Proliferation	[26]
IL-1𝛽	[27]	Reduction in migration	[27]
IL-6	[28]	Inhibition of neurogenesis	[29]
IL-7	[20]	Differentiation	[30]
IL-11	[20]	Differentiation	[30]
NT-4	[24]	Differentiation	[31]
PDGF	[32]	Expansion and differentiation	[33]
TGF𝛽	[34]	Inhibition of proliferation	[19]