Research Article

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

Table 4

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

ItemTreatments (mg/kg BWd) value
050200400LinearQuadratic

Jejunum
 SGLT11.001.14 ± 0.200.80 ± 0.211.65 ± 0.21NSNS
 SGLT31.001.06 ± 0.150.53 ± 0.160.03 ± 0.15<0.001NS
 GLUT21.001.44 ± 0.20.77 ± 0.201.12 ± 0.17NSNS
 GLUT51.000.16 ± 0.080.72 ± 0.100.68 ± 0.10NSNS
Ileum
 SGLT11.000.60 ± 0.120.17 ± 0.111.10 ± 0.09NS<0.001
 SGLT3 1.000.61 ± 0.070.26 ± 0.060.01 ± 0.005<0.001<0.001
 GLUT21.003.07 ± 0.301.31 ± 0.331.99 ± 0.30NSNS
 GLUT51.000.58 ± 0.100.53 ± 0.110.46 ± 0.110.003NS

BW: body weight, SGLT1: sodium dependent glucose transporter 1, SGLT3: sodium dependent glucose transporter 3, GLUT2: glucose transporter protein, member 2, GLUT5: glucose transporter protein, member 5, and NS: not significant. Means within a row not bearing a common superscript letter differ (P < 0.05). Data were reported as mean ± SE.