Table 2– Facultative glucose transporter (GLUT) and sodium-coupled glucose transporter (SGLT) expression in whole lung, and bronchial and alveolar# epithelium in fetal and adult stages
TransporterWhole lungBronchial epitheliumAlveolar epithelium
FetalAdultFetalAdultFetalAdult
RNAProteinRNAProteinRNAProteinRNAProteinRNAProteinRNAProtein
GLUTs
 GLUT1+ [50, 51]+ [50]+ [51, 52]+ [57]
- [58]§
- [58]§+ [59]
- [58]§
+ [60]- [58]§
 GLUT2+ [53]+ [45]- [60]
 GLUT3
 GLUT4+ [52]+ [60]
 GLUT5+ [60]
 GLUT6
 GLUT7
 GLUT8
 GLUT9
 GLUT10
 GLUT12+ [57]
SGLTs
 SGLT1+ [54, 55] + [56]§- [45]ƒ+ [60]+ [61]
+ [61]##
 SGLT2- [60]
  • Expression in rats unless otherwise stated. +: present; -: absent. #: type II cells; : pig; §: mouse; ƒ: rabbit; ##: sheep.