Clinical trial NCT02689765: Effect of Anthocyanins on Metabolic Profiles in Subjects With Pre-diabetes
Official title: Effect of Anthocyanins on Metabolic Profiles in Subjects With Pre-diabetes: A Randomized, Double-blind, Placebo-controlled Study
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE4
Conditions: Insulin Resistance
Glucose Metabolism Disorders
Type 2 Diabetes
Lipid Metabolism Disorders
Lead sponsor: Sun Yat-sen University
Sponsor class: OTHER
First posted: 2016-02-24
Enrollment: 160
Sex: ALL
Minimum age (years): 40
Maximum age (years): 75
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: Metabolic problems represent one of the major health concerns which are attractive for being addressed by nutritional interventions, as these are directly connected to dietary habits.Anthocyans possess cardiovascular disease prevention, obesity control, and diabetes alleviation properties, but association between anthocyans and prediabetes need to be more firmly understood and established from robust clinical data. However, there is little human research that has reported on the efficacy of increased anthocyans bioactive consumption on insulin sensitivity in pre-diabetes.

Detailed description: The investigators plan to conduct a randomized double-blind, placebo-controlled trial to characterize the potential effects of anthocyans, purified from bilberries and blackcurrants, on metabolic abnormalities commonly associated with type 2 pre-diabetes.

Eligibility criteria: Inclusion Criteria:

* FPG 100 mg/dL (5.6 mmol/L) to 125 mg/dL (6.9 mmol/L) (IFG) OR 2-h plasma glucose in the 75gOGTT 140 mg/dL (7.8 mmol/L) to 199 mg/dL (11.0 mmol/L)(IGT) OR HbA1C 5.7-6.4%.
* Newly diagnosed T2DM who exceed the upper limit of the range but has not yet accepted hypoglycemic therapy.

Exclusion Criteria:

Patients with cardiac, renal, or hepatic diseases or with hyperthyroidism or who had concomitant infections, or who use of anti-diabetic drug or potential affect plasma glucose drugs, pregnant and breast-feeding women, and with polycystic ovarian syndrome.

Primary outcomes:
measure: Change in fasting glucose and HbA1C
timeFrame: 12 weeks
Secondary outcomes:
measure: The area under the curves for Glucose,insulin and C peptide releasing test(fasting and post 75g oral glucose tolerance test)
timeFrame: 12 weeks
measure: Lipids
timeFrame: 12 weeks
measure: Calculated pancreatic β-cell function and insulin resistance
timeFrame: 12 weeks
Other outcomes:
Locations:
city: Guangzhou
country: China
facility: Baiyun Street Hospital,Yuexiu District
state: Guangdong
Study officials:
References:
citation: Yang L, Liu Z, Ling W, Wang L, Wang C, Ma J, Peng X, Chen J. Effect of Anthocyanins Supplementation on Serum IGFBP-4 Fragments and Glycemic Control in Patients with Fasting Hyperglycemia: A Randomized Controlled Trial. Diabetes Metab Syndr Obes. 2020 Sep 28;13:3395-3404. doi: 10.2147/DMSO.S266751. eCollection 2020.
citation: Yang L, Ling W, Qiu Y, Liu Y, Wang L, Yang J, Wang C, Ma J. Anthocyanins increase serum adiponectin in newly diagnosed diabetes but not in prediabetes: a randomized controlled trial. Nutr Metab (Lond). 2020 Sep 21;17:78. doi: 10.1186/s12986-020-00498-0. eCollection 2020.
citation: Yang L, Qiu Y, Ling W, Liu Z, Yang L, Wang C, Peng X, Wang L, Chen J. Anthocyanins regulate serum adipsin and visfatin in patients with prediabetes or newly diagnosed diabetes: a randomized controlled trial. Eur J Nutr. 2021 Jun;60(4):1935-1944. doi: 10.1007/s00394-020-02379-x. Epub 2020 Sep 15.