Amniotic fluid: Source of trophic factors for the developing intestine

Table 6 Important trophic factors involved in gut development and the most relevant reference articles

Trophic factor	Ref.	n of references cited
EGF	Maheshwari (2004)[24]	36
	Underwood (2005)[18]	63
	Playford (1996)[29]	23
	Cummins (2002)[15]	108
HGF	Maheshwari (2004)[24]	36
	Underwood (2005)[18]	63
	Cummins (2002)[15]	108
TGF-α and TGF-β	Maheshwari (2004)[24]	36
	Seare (1998)[56]	32
	Underwood (2005)[18]	63
	Cummins (2002)[15]	108
IGF-1	Maheshwari (2004)[24]	36
	Underwood (2005)[18]	63
	Seare (1998)[56]	32
	Cummins (2002)[15]	108
Cytokines	Maheshwari (2004)[24]	36
	Seare (1998)[56]	32

IGF-1: Insulin like growth factor-1; TGF: Transforming growth factor; EGF: Epidermal growth factor; HGF: Hepatocyte growth factor.