- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00808860
Anti-Diabetic Effect of Gynostemma Pentaphyllum Tea as add-on Therapy With Sulfonylureas in Type 2 Diabetic Patients
December 3, 2010 updated by: Hanoi Medical University
The present study aimed at investigating effect of Gynostemma pentapyllum (GP) extract, administered as a "tea", as add-on therapy with Sulfonylurea (SU) in drug-naive patients with newly diagnosed type 2 diabetes.
After screening, all patients received gliclazide MR 30mg and instruction regarding diet and physical exercise for 12 weeks.
After 4 weeks treated with gliclazide MR 30mg, the patients was randomized to additional GP tea or placebo tea, 3 g twice daily during 8 weeks.
Oral glucose tolerance tests were performed at baseline, after 4 and 12 weeks.
Blood tests were taken with the purpose to monitor lipids, kidney and liver function.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
In Vietnam, herbal extracts have been used as a long-standing tradition to treat diabetic patients, but effects of these extracts have not been studied adequately.
Based on previous results in experimental animal, the investigators have selected the plant Gynostemma pentapyllum (GP), which grows in the mountain region of Northern Vietnam.
GP extract had a hypoglycemic effect on mice and rat.
In addition, GP has been shown to reduce both hyperglycemia and hyperlipidemia in diabetic Zucker fatty rats.The present study aimed at investigating effect of Gynostemma pentapyllum (GP) extract, administered as a "tea", as add-on therapy with Sulfonylurea (SU) in drug-naive patients with newly diagnosed type 2 diabetes.In addition to monitoring effects plasma glucose regulation, the investigators also studied possible effects on plasma lipids, kidney and liver function as well as body weight and blood pressure.
Study Type
Interventional
Enrollment (Actual)
25
Phase
- Phase 2
- Phase 1
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
-
Hanoi, Vietnam
- National Institute of Gerontology, HMU
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
40 years to 70 years (ADULT, OLDER_ADULT)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- Newly diagnosed, drug-naive patients with type 2 diabetes
- Fasting plasma glucose (FPG)9.0-14.0 mmol/L
- HbA1C 9-13%
Exclusion Criteria:
- Type 1 diabetes
- Liver failure
- Kidney failure
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: DOUBLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
PLACEBO_COMPARATOR: Placebo group
Gliclazide + Placebo tea
|
Gliclazide MR 30mg once a day, orally Placebo tea 3 grams twice daily, orally
|
ACTIVE_COMPARATOR: GP group
Gliclazide + Gynostemma pentaphyllum tea
|
Gliclazide MR 30mg once a day, orally Gynostemma pentaphyllum tea 3 grams twice daily, orally
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
fasting plasma glucose
Time Frame: 12 weeks
|
12 weeks
|
HbA1C (glycosylated hemoglobin)
Time Frame: 12 weeks
|
12 weeks
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
liver enzymes (AST, ALT)
Time Frame: 12 weeks
|
12 weeks
|
kidney function (S-creatinine, S-BUN)
Time Frame: 12 weeks
|
12 weeks
|
plasma lipids (TG, Cholesterol, HDL-, LDL-)
Time Frame: 12 weeks
|
12 weeks
|
blood pressure
Time Frame: 12 weeks
|
12 weeks
|
body weight (BMI, hip-weight ratio)
Time Frame: 12 weeks
|
12 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Study Director: Claes-Goran Ostenson, MD, PhD, Karolinska Institutet
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Huyen VT, Phan DV, Thang P, Hoa NK, Ostenson CG. Antidiabetic effect of Gynostemma pentaphyllum tea in randomly assigned type 2 diabetic patients. Horm Metab Res. 2010 May;42(5):353-7. doi: 10.1055/s-0030-1248298. Epub 2010 Mar 8.
- Hoa NK, Phan DV, Thuan ND, Ostenson CG. Screening of the hypoglycemic effect of eight Vietnamese herbal drugs. Methods Find Exp Clin Pharmacol. 2009 Apr;31(3):165-9. doi: 10.1358/mf.2009.31.3.1362514.
- Hoa NK, Norberg A, Sillard R, Van Phan D, Thuan ND, Dzung DT, Jornvall H, Ostenson CG. The possible mechanisms by which phanoside stimulates insulin secretion from rat islets. J Endocrinol. 2007 Feb;192(2):389-94. doi: 10.1677/joe.1.06948.
- Norberg A, Hoa NK, Liepinsh E, Van Phan D, Thuan ND, Jornvall H, Sillard R, Ostenson CG. A novel insulin-releasing substance, phanoside, from the plant Gynostemma pentaphyllum. J Biol Chem. 2004 Oct 1;279(40):41361-7. doi: 10.1074/jbc.M403435200. Epub 2004 Jun 25.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
February 1, 2008
Primary Completion (ACTUAL)
October 1, 2008
Study Completion (ACTUAL)
December 1, 2008
Study Registration Dates
First Submitted
December 15, 2008
First Submitted That Met QC Criteria
December 15, 2008
First Posted (ESTIMATE)
December 16, 2008
Study Record Updates
Last Update Posted (ESTIMATE)
December 6, 2010
Last Update Submitted That Met QC Criteria
December 3, 2010
Last Verified
December 1, 2008
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Diabetes II-Study 2
- Study 2
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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