PMID- 35477124 OWN - NLM STAT- MEDLINE DCOM- 20220602 LR - 20220705 IS - 1879-0739 (Electronic) IS - 0271-5317 (Linking) VI - 103 DP - 2022 Jul TI - Lactoferrin improves hepatic insulin resistance and pancreatic dysfunction in high-fat diet and streptozotocin-induced diabetic mice. PG - 47-58 LID - S0271-5317(22)00027-6 [pii] LID - 10.1016/j.nutres.2022.03.011 [doi] AB - Lactoferrin (Lf) is an iron-binding glycoprotein with potentially beneficial biological functions. However, the interaction between Lf and type 2 diabetes mellitus (T2DM) remains unclear. We hypothesized that Lf would improve hepatic insulin resistance and pancreatic dysfunction in diabetic mice. Male C57BL/6J mice were fed a high-fat diet for 15 weeks and injected with streptozotocin (STZ) for 5 consecutive days to establish a T2DM model. One week after STZ injection, mice with >/=11.1 mmol/L fasting blood glucose concentration were considered T2DM mice. These mice received 0.5% or 2% Lf solution for another 12 weeks. Biochemical parameters were measured, and histopathological examination of the pancreas and liver was performed. Hepatic protein expression related to the insulin signalling pathway was also assessed. Diabetic mice showed insulin resistance and abnormal glucolipid metabolism. Lf decreased serum concentrations of glycated serum protein, fasting insulin, cholesterol, and triglyceride and increased liver insulin sensitivity. Hematoxylin-eosin staining showed that Lf reversed the abnormal pancreatic islets of diabetic mice. Lf improved pancreatic dysfunction by reducing oxidative stress and inflammation responses. Furthermore, Lf upregulated the protein expression of insulin receptor, insulin receptor substrate-1, glucose transporter 4, phosphor phosphatidylinositol 3-kinase/phosphatidylinositol 3-kinase (PI3K), and phosphor protein kinase B/protein kinase B (AKT) in the liver. This study indicated that Lf supplementation improved hepatic insulin resistance and pancreatic dysfunction, possibly by regulating the PI3K/AKT signaling pathway in T2DM mice. CI - Copyright (c) 2022 Elsevier Inc. All rights reserved. FAU - Du, Yafang AU - Du Y AD - Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, 215123, China; Department of Clinical Nutrition, Children's Hospital of Zhejiang University School of Medicine, Hangzhou, China. FAU - Li, Deming AU - Li D AD - Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, 215123, China. FAU - Chen, Jingsi AU - Chen J AD - Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, 215123, China. FAU - Li, Yun-Hong AU - Li YH AD - Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, 215123, China. FAU - Zhang, Zixiang AU - Zhang Z AD - Department of General Surgery, the First Affiliated Hospital of Soochow University, Suzhou, 215006, China; State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China. FAU - Hidayat, Khemayanto AU - Hidayat K AD - Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, 215123, China. FAU - Wan, Zhongxiao AU - Wan Z AD - Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, 215123, China. FAU - Xu, Jia-Ying AU - Xu JY AD - State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China. FAU - Qin, Li-Qiang AU - Qin LQ AD - Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, 215123, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220327 PL - United States TA - Nutr Res JT - Nutrition research (New York, N.Y.) JID - 8303331 RN - 0 (Insulin) RN - 5W494URQ81 (Streptozocin) RN - EC 2.7.1.137 (Phosphatidylinositol 3-Kinase) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 3.4.21.- (Lactoferrin) SB - IM MH - Animals MH - *Diabetes Mellitus, Experimental/drug therapy MH - *Diabetes Mellitus, Type 2/drug therapy MH - Diet, High-Fat/adverse effects MH - Insulin MH - *Insulin Resistance MH - Lactoferrin/adverse effects/metabolism MH - Liver/metabolism MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Pancreas/metabolism MH - Phosphatidylinositol 3-Kinase/metabolism MH - Phosphatidylinositol 3-Kinases/metabolism MH - Proto-Oncogene Proteins c-akt/metabolism MH - Streptozocin/adverse effects/metabolism OTO - NOTNLM OT - Insulin resistance OT - Lactoferrin OT - Pancreas OT - Type 2 diabetes mellitus COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2022/04/28 06:00 MHDA- 2022/06/03 06:00 CRDT- 2022/04/27 20:09 PHST- 2021/09/25 00:00 [received] PHST- 2022/03/16 00:00 [revised] PHST- 2022/03/20 00:00 [accepted] PHST- 2022/04/28 06:00 [pubmed] PHST- 2022/06/03 06:00 [medline] PHST- 2022/04/27 20:09 [entrez] AID - S0271-5317(22)00027-6 [pii] AID - 10.1016/j.nutres.2022.03.011 [doi] PST - ppublish SO - Nutr Res. 2022 Jul;103:47-58. doi: 10.1016/j.nutres.2022.03.011. Epub 2022 Mar 27.