Dietary phloridzin reduces blood glucose levels and reverses Sglt1 expression in the small intestine in streptozotocin-induced diabetic mice.
Phloridzin is a dihydrochalcone typically contained in apples. In this study, it is shown that a diet containing 0.5% phloridzin significantly reduced the blood glucose levels in streptozotocin (STZ)-induced diabetic mice after 14 days. We detected phloridzin in the plasma of STZ-induced diabetic mice fed the phloridzin diet for 14 days, although its concentration was much lower than that of the phloridzin metabolites. A quantitative RT-PCR analysis showed a reversal of STZ induction of the sodium/glucose cotransporter gene Sglt1 and the drug-metabolizing enzyme genes Cyp2b10 and Ephx1 in the small intestine of mice fed a 0.5% phloridzin diet. These mice also showed a reversal of the STZ-mediated renal induction of the glucose-regulated facilitated glucose transporter gene Glut2. Dietary phloridzin improved the abnormal elevations in blood glucose levels and the overexpression of Sglt1, Cyp2b10, and Ephx1 in the small intestine of STZ-induced diabetic mice.
National Food Research Institute, Tsukuba, Ibaraki, Japan.
Saeko
S
Masumoto
Yukari
Y
Akimoto
Hideaki
H
Oike
Masuko
M
Kobori
D000818:Animals; D001189:Aryl Hydrocarbon Hydroxylases / Q000235:genetics / Q000378:metabolism; D001786:Blood Glucose / Q000187:drug effects*; D000072467:Cytochrome P450 Family 2; D003921:Diabetes Mellitus, Experimental / Q000178:diet therapy* / Q000235:genetics / Q000378:metabolism; D004195:Disease Models, Animal; D015870:Gene Expression / Q000187:drug effects*; D006801:Humans; D007421:Intestine, Small / Q000187:drug effects / Q000378:metabolism*; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D010695:Phlorhizin / Q000008:administration & dosage*; D051269:Sodium-Glucose Transporter 1 / Q000235:genetics* / Q000378:metabolism; D013250:Steroid Hydroxylases / Q000235:genetics / Q000378:metabolism; D013311:Streptozocin
D001786:Blood Glucose; C495675:Slc5a1 protein, mouse; D051269:Sodium-Glucose Transporter 1; D013311:Streptozocin; D010695:Phlorhizin; D013250:Steroid Hydroxylases; D001189:Aryl Hydrocarbon Hydroxylases; C101679:Cyp2b10 protein, mouse; D000072467:Cytochrome P450 Family 2