PMID- 33435282 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210218 IS - 2076-3921 (Print) IS - 2076-3921 (Electronic) IS - 2076-3921 (Linking) VI - 10 IP - 1 DP - 2021 Jan 9 TI - Plant Extracts for Type 2 Diabetes: From Traditional Medicine to Modern Drug Discovery. LID - 10.3390/antiox10010081 [doi] LID - 81 AB - Type 2 diabetes mellitus (T2DM) is one of the largest public health problems worldwide. Insulin resistance-related metabolic dysfunction and chronic hyperglycemia result in devastating complications and poor prognosis. Even though there are many conventional drugs such as metformin (MET), Thiazolidinediones (TZDs), sulfonylureas (SUF), dipeptidyl peptidase 4 (DPP-4) inhibitors, glucagon like peptide 1 (GLP-1) and sodium-glucose cotransporter-2 (SGLT-2) inhibitors, side effects still exist. As numerous plant extracts with antidiabetic effects have been widely reported, they have the potential to be a great therapeutic agent for type 2 diabetes with less side effects. In this study, sixty-five recent studies regarding plant extracts that alleviate type 2 diabetes were reviewed. Plant extracts regulated blood glucose through the phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt) pathway. The anti-inflammatory and antioxidant properties of plant extracts suppressed c-Jun amino terminal kinase (JNK) and nuclear factor kappa B (NF-kappaB) pathways, which induce insulin resistance. Lipogenesis and fatty acid oxidation, which are also associated with insulin resistance, are regulated by AMP-activated protein kinase (AMPK) activation. This review focuses on discovering plant extracts that alleviate type 2 diabetes and exploring its therapeutic mechanisms. FAU - Lee, Jinjoo AU - Lee J AD - College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea. AD - Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea. FAU - Noh, Seungjin AU - Noh S AD - College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea. FAU - Lim, Suhyun AU - Lim S AD - College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea. FAU - Kim, Bonglee AU - Kim B AUID- ORCID: 0000-0002-8678-156X AD - College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea. AD - Department of Pathology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea. AD - Korean Medicine-Based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Korea. LA - eng GR - No. 2020R1A5A201941311/the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT)/ GR - NRF-2020R1I1A2066868/Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education/ GR - HF20C0116/a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea/ GR - HB20C0038/a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea/ PT - Journal Article PT - Review DEP - 20210109 PL - Switzerland TA - Antioxidants (Basel) JT - Antioxidants (Basel, Switzerland) JID - 101668981 PMC - PMC7827314 OTO - NOTNLM OT - antioxidant OT - diabetes mellitus OT - glucose transport OT - inflammation OT - lipid metabolism OT - plant extracts COIS- The authors declare no conflict of interest. EDAT- 2021/01/14 06:00 MHDA- 2021/01/14 06:01 PMCR- 2021/01/09 CRDT- 2021/01/13 01:01 PHST- 2020/12/05 00:00 [received] PHST- 2021/01/04 00:00 [revised] PHST- 2021/01/07 00:00 [accepted] PHST- 2021/01/13 01:01 [entrez] PHST- 2021/01/14 06:00 [pubmed] PHST- 2021/01/14 06:01 [medline] PHST- 2021/01/09 00:00 [pmc-release] AID - antiox10010081 [pii] AID - antioxidants-10-00081 [pii] AID - 10.3390/antiox10010081 [doi] PST - epublish SO - Antioxidants (Basel). 2021 Jan 9;10(1):81. doi: 10.3390/antiox10010081.