This study showed that a hydro-alcoholic extract of black mulberry leaf may be efficient in reducing the blood glucose and HbA1c% in diabetic patients.

PMID: 

J Complement Integr Med. 2021 May 5. Epub 2021 May 5. PMID: 33946137

Abstract Title: 

Hydro-alcoholic extract ofreduces fasting blood glucose and HbA1c% in diabetic patients, probably via competitive and allosteric interaction with alpha-glucosidase enzyme; a clinical trial andanalysis.

Abstract: 

OBJECTIVES: 1-Deoxynojirimycin (1-DNJ), the main active component found in() is reported to be effective in controlling diabetes. We have evaluated the effect of hydro-alcoholic extract ofleaves on the fasting blood glucose (FBS) and hemoglobin A1c% (HbA1c%) in diabetic patients. Furthermore, we compared the interaction of 1-DNJ and glucose molecules with the alpha-glucosidase enzyme, which has a critical role in the lysis of glucose-based polymers in human cells.METHODS: 4% hydro-alcoholic extract was prepared fromleaves. Patients in treatment (n=50) and control (n=50) groups received 3 mL extract or placebo in water, respectively, and three times a day. Fasting blood glucose and HbA1c% were evaluated before and after three months of evaluation. Potential binding sites of 1-DNJ or glucose on the enzyme glucosidase found by docking study. Docking scores were obtained using an energy minimization method by Molegro Virtual Docker software. The Mean ± SD of each variable was compared between groups at the 95% significant level.RESULTS: Age mean ± SD was equal to 54.79 ± 9.203 (38-69) years. There was no significant difference between intervention and placebo groups considering FBS (p=0.633) but was for HbA1c% (p=0.0011), before treatment. After three months, both FBS and HbA1c% were significantly reduced in patients underleaves extract-treatment. FBS changed was from 182.23 ± 38.65 to 161.23 ± 22.14 mg/dL in treatment group (p

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