L-Theanine Administration Modulates the Absorption of Dietary Nutrients and Expression of Transporters and Receptors in the Intestinal Mucosa of Rats

Table 5

Effects of L-theanine administration on the transcript levels of fatty acid transporters and receptors in rat intestine.

Item	Treatments (mg/kg BW·d)				P value
	0	50	200	400	Linear	Quadratic
Jejunum
FATP	1.00	0.27 ± 0.03	1.86 ± 0.07	0.40 ± 0.03	NS	0.007
GPR43	1.00	0.79 ± 0.49	1.23 ± 0.57	0.86 ± 0.61	NS	NS
GPR120	1.00	0.25 ± 0.03	0.18 ± 0.03	0.06 ± 0.03	<0.001	<0.001
FABP2	1.00	0.52 ± 0.08	0.51 ± 0.08	0.09 ± 0.08	<0.001	NS
Ileum
FATP	1.00	1.52 ± 0.19	1.00 ± 0.19	1.76 ± 0.39	NS	NS
GPR43	1.00	0.56 ± 0.13	0.72 ± 0.14	1.02 ± 0.14	NS	0.07
GPR120	1.00	0.36 ± 0.11	0.64 ± 0.11	0.21 ± 0.12	<0.001	NS
FABP2	1.00	0.38 ± 0.05	0.16 ± 0.05	0.08 ± 0.05	<0.001	<0.001

BW: body weight, FATP: fatty acid transport protein, GPR43: G-protein-coupled receptor 43, GPR120: G-protein-coupled receptor 120, FABP2: fatty acid binding protein 2, and NS: not significant. Means within a row not bearing a common superscript letter differ (P < 0.05). Data were reported as mean ± SE.