PMID- 12099975 OWN - NLM STAT- MEDLINE DCOM- 20030121 LR - 20191106 IS - 1462-8902 (Print) IS - 1462-8902 (Linking) VI - 4 IP - 4 DP - 2002 Jul TI - Brain-derived neurotrophic factor ameliorates lipid metabolism in diabetic mice. PG - 262-9 AB - AIM: It has been reported previously that brain-derived neurotrophic factor (BDNF) regulates blood glucose metabolism in rodent obese diabetic models such as C57BL/KsJ-leprdb/leprdb (db/db) mice. BDNF further regulates energy expenditure, possibly through the central and autonomous nervous systems. In this study, we evaluated the effect of BDNF on both lipid and glucose metabolisms to clarify its action mechanism. METHODS: To control the energy intake, we used a pellet pair-feeding apparatus to synchronize food intake precisely between BDNF-treated and vehicle-treated db/db mice. BDNF (50 mg/kg/week) was subcutaneously injected to male db/db mice twice weekly for 3 weeks, and blood glucose, serum biochemical lipid parameters and tissue weights were measured. Liver triglyceride contents were measured and liver sections were histologically analysed. RESULTS: Twice weekly BDNF treatment for 3 weeks significantly lowered blood glucose compared with pellet pair-fed, vehicle-treated db/db mice (294 +/- 109 vs. 529 +/- 91 mg/dL). Serum non-esterified free fatty acid (726 +/- 72 vs. 999 +/- 220 microEq/l), total cholesterol (125 +/- 8 vs. 151 +/- 23 mg/dL) and phospholipid levels (215 +/- 13 vs. 257 +/- 36 mg/dL) of the BDNF-treated db/db mice decreased significantly. Liver weights (1.51 +/- 0.11 vs. 2.05 +/- 0.11 g), liver triglyceride contents (17.5 +/- 1.4 vs. 26.1 +/- 2.1 mg/g) and fatty liver in histological appearance were reduced with BDNF treatment. There were no significant differences in body weights and white adipose tissue weights between the two groups. CONCLUSIONS: Taken together with the accelerating effect of BDNF on energy metabolism, these findings indicate that BDNF improves glucose and lipid metabolism in obese diabetic animals without enlarging liver or adipose tissues. FAU - Tsuchida, A AU - Tsuchida A AD - Sumitomo Pharmaceuticals Co. Ltd, Discovery Research Laboratories II, Konohana-ku, Osaka 554-0022, Japan. FAU - Nonomura, T AU - Nonomura T FAU - Nakagawa, T AU - Nakagawa T FAU - Itakura, Y AU - Itakura Y FAU - Ono-Kishino, M AU - Ono-Kishino M FAU - Yamanaka, M AU - Yamanaka M FAU - Sugaru, E AU - Sugaru E FAU - Taiji, M AU - Taiji M FAU - Noguchi, H AU - Noguchi H LA - eng PT - Journal Article PL - England TA - Diabetes Obes Metab JT - Diabetes, obesity & metabolism JID - 100883645 RN - 0 (Blood Glucose) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 97C5T2UQ7J (Cholesterol) SB - IM MH - Adipose Tissue/drug effects/metabolism MH - Animals MH - Blood Glucose/drug effects/*metabolism MH - Brain-Derived Neurotrophic Factor/*pharmacology MH - Cholesterol/blood MH - Crosses, Genetic MH - Diabetes Mellitus/*blood MH - *Lipid Metabolism MH - Liver/drug effects/metabolism/pathology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Mutant Strains MH - *Obesity MH - Time Factors EDAT- 2002/07/09 10:00 MHDA- 2003/01/22 04:00 CRDT- 2002/07/09 10:00 PHST- 2002/07/09 10:00 [pubmed] PHST- 2003/01/22 04:00 [medline] PHST- 2002/07/09 10:00 [entrez] AID - 206 [pii] AID - 10.1046/j.1463-1326.2002.00206.x [doi] PST - ppublish SO - Diabetes Obes Metab. 2002 Jul;4(4):262-9. doi: 10.1046/j.1463-1326.2002.00206.x.