PMID- 35072186 OWN - NLM STAT- MEDLINE DCOM- 20220225 LR - 20220225 IS - 2042-650X (Electronic) IS - 2042-6496 (Linking) VI - 13 IP - 3 DP - 2022 Feb 7 TI - Sesquiterpene glycoside isolated from loquat leaf targets gut microbiota to prevent type 2 diabetes mellitus in db/db mice. PG - 1519-1534 LID - 10.1039/d1fo03646g [doi] AB - According to ancient records, loquat leaf has been used as both a food and medicine in China for thousands of years. Sesquiterpene glycosides from loquat leaf have achieved remarkable effects on hyperglycemia. However, their specific activities and underlying mechanisms on type 2 diabetes mellitus (T2DM) are not fully understood. In the present study, we found that SG1, a unique sesquiterpene glycoside isolated from loquat leaf, had the capability to prevent insulin resistance and inflammation. In db/db mice, SG1 administration (25 and 50 mg kg(-1) day(-1)) inhibited hyperglycemia and the release of inflammatory cytokines. To further explore the possible role of gut microbiota in SG1 for treating T2DM, we applied 16S rRNA pyrosequencing based on the V3-V4 region to analyze the fecal samples of different groups. Alpha diversity analysis showed that SG1 administration could obviously increase diversity and richness in db/db mice. At the phylum level, due to SG1 treatment, the relative abundance of Firmicutes and Actinobacteria was lowered while that of Bacteroidetes was raised. Additionally, 7 key genera in the db/db mice with SG1 supplementation were enriched: Lactobacillus, Lachnospiraceae_NK4A136_group, and Ruminococcus, Bacteroides, Prevotellaceae_UCG-001, Alistipes, and Roseburia. These findings proved that SG1 could prevent T2DM by relieving insulin resistance and inflammation and by remodeling the gut microbiota in db/db mice. FAU - Wu, Ruoyun AU - Wu R AUID- ORCID: 0000-0003-2431-2423 AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. FAU - Zhou, Lina AU - Zhou L AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. FAU - Chen, Yan AU - Chen Y AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. FAU - Ding, Xiaoqin AU - Ding X AUID- ORCID: 0000-0002-9365-6396 AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. FAU - Liu, Yan AU - Liu Y AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. FAU - Tong, Bei AU - Tong B AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. FAU - Lv, Han AU - Lv H AUID- ORCID: 0000-0003-4452-4351 AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. FAU - Meng, Xiuhua AU - Meng X AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. FAU - Li, Jing AU - Li J AD - Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China. chenjian80@aliyun.com. FAU - Jian, Tunyu AU - Jian T AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. FAU - Chen, Jian AU - Chen J AUID- ORCID: 0000-0003-0686-833X AD - Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China. jiantunyu1986@163.com. AD - Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China. chenjian80@aliyun.com. LA - eng PT - Journal Article DEP - 20220207 PL - England TA - Food Funct JT - Food & function JID - 101549033 RN - 0 (Blood Glucose) RN - 0 (Glycosides) RN - 0 (Hypoglycemic Agents) RN - 0 (Sesquiterpenes) SB - IM MH - Animals MH - Blood Glucose MH - Diabetes Mellitus, Type 2/*prevention & control MH - *Eriobotrya MH - Functional Food MH - Gastrointestinal Microbiome/drug effects MH - Glycosides/*pharmacology MH - Hypoglycemic Agents/*pharmacology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Inbred Strains MH - Plant Leaves MH - Sesquiterpenes/*pharmacology EDAT- 2022/01/25 06:00 MHDA- 2022/02/26 06:00 CRDT- 2022/01/24 08:58 PHST- 2022/01/25 06:00 [pubmed] PHST- 2022/02/26 06:00 [medline] PHST- 2022/01/24 08:58 [entrez] AID - 10.1039/d1fo03646g [doi] PST - epublish SO - Food Funct. 2022 Feb 7;13(3):1519-1534. doi: 10.1039/d1fo03646g.