DiabetesPhase 4NCT00770367
Pioglitazone and Serum Asymmetric Dimethylarginine (ADMA) in Patients With Diabetes
A Phase 4 study of Diabetes, run by Medical University of South Carolina at 1 site in United States.
Trial summary
SPECIFIC AIMS 1. To determine whether pioglitazone will reduce levels of asymmetric dimethylarginine(ADMA) in patients with diabetes. 2. To determine whether nitric oxide(NOx) products are increased with pioglitazone treatment. 3. To determine whether pioglitazone reduces oxidative stress (F2-isoprostanes). Read more about this study
- Who is it for?
- Ages 40 to 75 years
- Conditions the study is for
- Diabetes
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 36 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2008to Jun 2010
- Phase
- Phase 4
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 40 to 75 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Adults age 40--75 years-of-age, non-pregnant
- Informed consent
- History of type 2 Diabetes Mellitus
- Stable weight for the last 3 months (no change greater than +5% of body weight)
- ADMA > 0.50 µM/L (mean of non-diabetic reference group) (Devangelio 2007)
- On stable medical therapy for at least 3 months
- A working telephone
Who cannot join
- Any history of known coronary heart disease, including a history of congestive heart failure, myocardial infarction, coronary re-vascularization, or stroke
- Pregnancy
- Chronic kidney disease, serum creatinine >2.0mg/dl, chronic liver disease, or uncontrolled hypertension (>160/100).
- Current participation in a formal weight loss program or planning to start such a program during the next 3 months
- Collagen vascular disease, infection, or other inflammatory condition
- Electrocardiogram (EKG) evidence of ischemia or infarction
- Macular edema (swelling of the back of the eye), recent excessive weight gain (over 5% of weight in 30 days), elevated liver function tests > 2.5 X the upper limit, or history of osteoporosis
Trial locations and contacts
1 site in 1 country.
United States1 site
Department of Family Medicine, MUSC
Charleston, South Carolina, 29425
About this study
SPECIFIC AIMS
- To determine whether pioglitazone will reduce levels of asymmetric dimethylarginine(ADMA) in patients with diabetes.
- To determine whether nitric oxide(NOx) products are increased with pioglitazone treatment.
- To determine whether pioglitazone reduces oxidative stress (F2-isoprostanes).
Read the detailed description
The primary purpose of this study is to determine whether treatment with pioglitazone can reduce serum levels of asymmetric dimethylarginine (ADMA) in patients with adult diabetes. Recent research has found that elevated serum ADMA is associated with increased cardiovascular events and mortality, particularly in people with diabetes (Boger 2005, Zoccali 2006, Ueda 2007). ADMA, by mediating nitric oxide (NO) availability, may trigger pro-atherogenic effects. High plasma concentration of this substance has been associated with intima-media thickening, left ventricular hypertrophy and all-cause and cardiovascular mortality in patients with end-stage renal disease, and associated with increased cardiovascular events in patients with diabetes (Kryzazanowska 2007). The result of higher levels of ADMA and reduced output of NO increases vasoconstriction, increases inflammation, and interferes with endothelial function. Preliminary studies indicate that pioglitazone may reduce ADMA levels, and thus lower cardiovascular risk.Thus, this protocol will test whether pioglitazone can reduce ADMA levels in adult patients with diabetes.
- Conditions
- Diabetes
- Being tested
- Pioglitazone then Placebo, Placebo then Pioglitazone
- Keywords
- Cardiovascular risk, biological markers
- Medical subject headings
- Diabetes Mellitus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Pioglitazone then PlaceboDrug
Also called Actos, Glustin, Zactos
Subjects will take the pioglitazone 30mg tablet daily for 3 months. This will be followed by a 4-week period during which subjects will not be taking either the study drug or placebo. During the final 12-week period the group will take a placebo.
Placebo then PioglitazoneDrug
Also called Actos, Glustin, Zactos
Subjects will take the placebo for the first 12 weeks of the study. This will be followed by a 4-week period during which subjects will not be taking either the study drug or placebo. During the final 12-week period the group will take the pioglitazone 30mg tablet daily for 3 months.
| Study group | Role | What they receive |
|---|---|---|
| Pioglitazone then Placebo | Experimental | 18 volunteers that are Diabetic adults, 40-75 years that have higher ADMA levels as well as increased inflammation will take Pioglitazone for the first 12 week period of the study and then take the placebo for the final 12 weeks of the study. Receives: Drug: Pioglitazone then Placebo |
| Placebo then Pioglitazone | Experimental | 18 (other half of participants) volunteers that are Diabetic adults, 40-75 years that have higher ADMA levels as well as increased inflammation will take the placebo for the first 12 week period of the study and then take the Pioglitazone for the final 12 weeks of the study. Receives: Drug: Placebo then Pioglitazone |
What is being measured
The primary outcome is the main question the study is designed to answer.
Asymmetric Dimethylarginine (ADMA) Level
Labs measured micro moles per liter of ADMA levels in participants.
Measured: 3 months
Secondary outcomes (1)
NOx f2-isoprostanes
Measured oxidative stress - NOx measured by chemiluminescence detection using the Sievers NOA 280i and f2-isoprostanes are isolated by thin layer chromatography and subjected to a highly sensitive and specific gas chromatography/mass spectroscopy method to measusre the oxidative stress
Measured: 3 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Oct 2008 (estimated)
- Study startOct 2008
- Primary completionDec 2009
- Study completionJun 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for DiabetesStudies of the same condition, open and under way.
- More trials run by Medical University of South CarolinaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 4
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 36 participants (actual)
Sponsor and investigators
- Lead sponsor
- Medical University of South Carolina
- Sponsor type
- University, hospital or other
- Collaborators
- Takeda Pharmaceuticals North America, Inc.
- Responsible party
- Sponsor
- Investigators
- Dana E King, MD, Principal investigator, Medical University of South Carolina
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00770367
- Sponsor's protocol ID
- Takeda 07-060
- Other IDs
- 18379
- Status last verified
- Dec 2011
- First submitted
- 9 Oct 2008
- Last updated
- 31 Aug 2018
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 31 Aug 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Pioglitazone and Serum Asymmetric Dimethylarginine (ADMA) in Patients With Diabetes
- ClinicalTrials.gov ID
- NCT00770367
- Acronym / sponsor ID
- Takeda 07-060
- Conditions
- Diabetes
- Keywords
- Cardiovascular risk, biological markers
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 36 participants (actual)
- Lead sponsor
- Medical University of South CarolinaUniversity, hospital or other
- Collaborators
- Takeda Pharmaceuticals North America, Inc.
- Study start
- Oct 2008
- Primary completion
- Dec 2009 (actual)
- Study completion
- Jun 2010 (actual)
- First posted
- 10 Oct 2008 (estimated)
- Results
- Posted 18 Nov 2010
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
SPECIFIC AIMS
- To determine whether pioglitazone will reduce levels of asymmetric dimethylarginine(ADMA) in patients with diabetes.
- To determine whether nitric oxide(NOx) products are increased with pioglitazone treatment.
- To determine whether pioglitazone reduces oxidative stress (F2-isoprostanes).
Detailed description
The primary purpose of this study is to determine whether treatment with pioglitazone can reduce serum levels of asymmetric dimethylarginine (ADMA) in patients with adult diabetes. Recent research has found that elevated serum ADMA is associated with increased cardiovascular events and mortality, particularly in people with diabetes (Boger 2005, Zoccali 2006, Ueda 2007). ADMA, by mediating nitric oxide (NO) availability, may trigger pro-atherogenic effects. High plasma concentration of this substance has been associated with intima-media thickening, left ventricular hypertrophy and all-cause and cardiovascular mortality in patients with end-stage renal disease, and associated with increased cardiovascular events in patients with diabetes (Kryzazanowska 2007). The result of higher levels of ADMA and reduced output of NO increases vasoconstriction, increases inflammation, and interferes with endothelial function. Preliminary studies indicate that pioglitazone may reduce ADMA levels, and thus lower cardiovascular risk.Thus, this protocol will test whether pioglitazone can reduce ADMA levels in adult patients with diabetes.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Pioglitazone then Placebo | Experimental | Drug: Pioglitazone then Placebo18 volunteers that are Diabetic adults, 40-75 years that have higher ADMA levels as well as increased inflammation will take Pioglitazone for the first 12 week period of the study and then take the placebo for the final 12 weeks of the study. |
| Placebo then Pioglitazone | Experimental | Drug: Placebo then Pioglitazone18 (other half of participants) volunteers that are Diabetic adults, 40-75 years that have higher ADMA levels as well as increased inflammation will take the placebo for the first 12 week period of the study and then take the Pioglitazone for the final 12 weeks of the study. |
Who may qualify
- Ages
- 40 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (7 listed)
- Adults age 40--75 years-of-age, non-pregnant
- Informed consent
- History of type 2 Diabetes Mellitus
- Stable weight for the last 3 months (no change greater than +5% of body weight)
- ADMA > 0.50 µM/L (mean of non-diabetic reference group) (Devangelio 2007)
Key exclusion criteria (7 listed)
- Any history of known coronary heart disease, including a history of congestive heart failure, myocardial infarction, coronary re-vascularization, or stroke
- Pregnancy
- Chronic kidney disease, serum creatinine >2.0mg/dl, chronic liver disease, or uncontrolled hypertension (>160/100).
- Current participation in a formal weight loss program or planning to start such a program during the next 3 months
- Collagen vascular disease, infection, or other inflammatory condition
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Pioglitazone then PlaceboAlso: Actos, Glustin, ZactosSubjects will take the pioglitazone 30mg tablet daily for 3 months. This will be followed by a 4-week period during which subjects will not be taking either the study drug or placebo. During the final 12-week period the group will take a placebo. | Drug | Pioglitazone then Placebo |
| Placebo then PioglitazoneAlso: Actos, Glustin, ZactosSubjects will take the placebo for the first 12 weeks of the study. This will be followed by a 4-week period during which subjects will not be taking either the study drug or placebo. During the final 12-week period the group will take the pioglitazone 30mg tablet daily for 3 months. | Drug | Placebo then Pioglitazone |
Primary outcome
Asymmetric Dimethylarginine (ADMA) Level
Time frame: 3 months
Labs measured micro moles per liter of ADMA levels in participants.
1 secondary outcome
NOx f2-isoprostanes
Time frame: 3 months
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 31 Aug 2018.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Dana E King, MD principal investigator
Medical University of South Carolina
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study of Diabetes, run by Medical University of South Carolina at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 7 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 31 Aug 2018. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 18 Nov 2010). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Asymmetric Dimethylarginine (ADMA) Level (time frame: 3 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 31 Aug 2018.