Effect of Blueberin on fasting glucose, C-reactive protein and plasma aminotransferases, in female volunteers with diabetes type 2: double-blind, placebo controlled clinical study.
In a 4-week randomized placebo-controlled clinical trial we investigated the effect of 300 mg Blueberin, a phytomedicine containing 250 mg Blueberry leaves (Vaccinium arctostaphylos L, Ericaceae) extract providing minimum 50 mg 3,4-caffeoylquinic (chlorogenic) acid, and 50 mg myricetin, on fasting plasma glucose, alanine aminotransferases (ALT), aspartate aminotransferases (AST), glutamyltransferase (GGT) enzymes levels, and serum inflammatory C-Reactive proteins (CRP) in forty-two volunteer subjects (46+/-15 year of age, BMI 25+/-3 kgs/(m2)) diagnosed with Type 2 diabetes. During the 4-week trial, the Blueberin supplement was administered three times per day, 15-30 minutes prior to a meal along with 100 ml of water. Results of this trial revealed that the supplementation of Blueberin reduced fasting plasma glucose from 143+/-5,2mg/L to 104+/-5,7 mg/L (p<0,001), whereas there was no statistically significant changes in the Placebo group from 138+/-4,8 mg/L to 126+/-5,1mg/L (p>0,05). The reduction of fasting glucose was correlated with the reduction of serum CRP and in the Blueberin group from 5,18+/-1,4 mg/l to 2,14+/-1,8 mg/L (p<0,05), whereas in the Placebo group CRP levels were not significantly reduced from 5,11+/-1,7 mg/l to 4,94+/-1,1mg/L (p>0,05). Furthermore, the Blueberin also significantly reduced the levels of plasma enzymes ALT, AST and GGT, indicating that, in addition to anti-diabetes effects, the Blueberin also possess pharmacologically relevant anti-inflammatory properties.
Abidov
M
M
Institute of Immunopathology, Center of Modern Medicine, Russian Academy of Natural Sciences, Moscow, Russia.
Ramazanov
A
A
Jimenez Del Rio
M
M
Chkhikvishvili
I
I
D001786:Blood Glucose / Q000187:drug effects*; D002097:C-Reactive Protein / Q000378:metabolism*; D003924:Diabetes Mellitus, Type 2 / Q000188:drug therapy* / Q000378:metabolism*; D004311:Double-Blind Method; D005215:Fasting; D005260:Female; D005419:Flavonoids / Q000627:therapeutic use; D006801:Humans; D007004:Hypoglycemic Agents / Q000494:pharmacology* / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D010936:Plant Extracts / Q000627:therapeutic use; D000637:Transaminases / Q000097:blood*
D001786:Blood Glucose; C520234:Blueberin; D005419:Flavonoids; D007004:Hypoglycemic Agents; D010936:Plant Extracts; C040015:myricetin; D002097:C-Reactive Protein; D000637:Transaminases