PMID- 33244247 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220418 IS - 1178-7007 (Print) IS - 1178-7007 (Electronic) IS - 1178-7007 (Linking) VI - 13 DP - 2020 TI - Evaluation of the Effect of an Aqueous Extract of Azadirachta indica (Neem) Leaves and Twigs on Glycemic Control, Endothelial Dysfunction and Systemic Inflammation in Subjects with Type 2 Diabetes Mellitus - A Randomized, Double-Blind, Placebo-Controlled Clinical Study. PG - 4401-4412 LID - 10.2147/DMSO.S274378 [doi] AB - PURPOSE: Neem tree (Azadirachta indica) offers different bioactives ranging from pesticides to therapeutic molecules, depending on which part of the plant is used and the extraction methodology and the solvent used. This study was aimed at evaluating the safety and efficacy of a standardized aqueous extract of Azadirachta indica leaves and twigs (NEEM) on glycemic control, endothelial dysfunction, and systemic inflammation in patients with type 2 diabetes mellitus (T2DM). METHODS: In this randomized, double-blind, placebo-controlled clinical study (RCT), 80 T2DM subjects, who have already been on standard metformin therapy, received either 125 mg, 250 mg, 500 mg of NEEM or placebo twice daily for 12 weeks. Postprandial blood sugar level (PPBS), fasting blood sugar level (FBS), glycosylated hemoglobin (HbA1c), insulin resistance (IR), endothelial function, oxidative stress, systemic inflammation, IL-6 and TNF-alpha, platelet aggregation and lipid profile were assessed. Adverse drug reactions, if any, were noted. GraphPad Prism 8 was used to perform statistical analysis. RESULTS: NEEM at the doses of 125, 250, and 500 mg BID significantly reduced PPBS (from 194.4+/-14 to 173.1+/-12.8mg/dL, 192.3+/-17.1 to 161.8+/-9.7mg/dL, and 205.9+/-7.2 to 159.3+/-7.1mg/dL, respectively), FBS (from 119.2+/-5.0 to 109.2+/-5.7mg/dL, 115.5+/-4.4 to 103.7+/-4.2mg/dL, and 120.7+/-4.2 to 97.3+/-3.7mg/dL, respectively), HbA1c (from 6.87 +/- 0.4% to 6.64 +/- 0.4%, 7.52 +/- 0.4% to 6.86 +/- 0.3%, and 7.78 +/- 0.2% to 6.26 +/- 0.4%, respectively), and IR (from 4.5 +/- 1.2 to 3.4 +/- 0.9, 3.8 +/- 1.1 to 2.5 +/- 0.6, and 4.6 +/- 1.3 to 2.0 +/- 0.6, respectively) compared to placebo. Also, NEEM significantly improved endothelial function, decreased oxidative stress and systemic inflammation compared to placebo. The efficacy was significant with all the doses, but no effect on platelet aggregation or lipid profile was observed. CONCLUSION: NEEM may significantly ameliorate hyperglycemia, endothelial dysfunction, and systemic inflammation, on top of what metformin could do, in subjects with T2DM. CI - (c) 2020 Pingali et al. FAU - Pingali, Usharani AU - Pingali U AUID- ORCID: 0000-0002-9300-8022 AD - Department of Pharmacology and Therapeutics, Nizam's Institute of Medical Sciences, Hyderabad, Telangana 500073, India. FAU - Ali, Mohammed Abid AU - Ali MA AD - Department of Pharmacology and Therapeutics, Nizam's Institute of Medical Sciences, Hyderabad, Telangana 500073, India. FAU - Gundagani, Srinivas AU - Gundagani S AD - Department of Pharmacology and Therapeutics, Nizam's Institute of Medical Sciences, Hyderabad, Telangana 500073, India. FAU - Nutalapati, Chandrasekhar AU - Nutalapati C AUID- ORCID: 0000-0002-0529-2706 AD - Department of Pharmacology and Therapeutics, Nizam's Institute of Medical Sciences, Hyderabad, Telangana 500073, India. LA - eng PT - Journal Article DEP - 20201117 PL - New Zealand TA - Diabetes Metab Syndr Obes JT - Diabetes, metabolic syndrome and obesity : targets and therapy JID - 101515585 PMC - PMC7683773 OTO - NOTNLM OT - Azadirachta indica OT - endothelial dysfunction OT - hyperglycemia OT - insulin resistance OT - metformin OT - neem OT - type 2 diabetes COIS- The authors declare no competing interests. EDAT- 2020/11/28 06:00 MHDA- 2020/11/28 06:01 PMCR- 2020/11/17 CRDT- 2020/11/27 05:44 PHST- 2020/07/28 00:00 [received] PHST- 2020/09/26 00:00 [accepted] PHST- 2020/11/27 05:44 [entrez] PHST- 2020/11/28 06:00 [pubmed] PHST- 2020/11/28 06:01 [medline] PHST- 2020/11/17 00:00 [pmc-release] AID - 274378 [pii] AID - 10.2147/DMSO.S274378 [doi] PST - epublish SO - Diabetes Metab Syndr Obes. 2020 Nov 17;13:4401-4412. doi: 10.2147/DMSO.S274378. eCollection 2020.