Insulin ResistancePhase 1NCT00505427
Alpha Lipoic Acid and Polycystic Ovary Syndrome
A Phase 1 study testing Alpha Lipoic Acid in people with Insulin Resistance and Oxidative Stress, run by University of California, San Francisco at 1 site in United States.
Trial summary
The study will recruit 40 subjects with Polycystic Ovary Syndrome (PCOS) as defined by the NIH criteria. The subjects will be pre-screened for insulin sensitivity using fasting insulin and glucose levels and oral glucose tolerance test. Read more about this study
- Who is it for?
- Ages 18 to 50 years, women only
- Conditions the study is for
- Insulin Resistance, Oxidative Stress
- What is being tested?
- Alpha Lipoic Acid
- How many people
- 22 participants
- Where
- 1 siteUnited States
- Study dates
- Mar 2006to Jul 2010
- Phase
- Phase 1
- Are there results?
- None posted in the registry
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 18 to 50 years
- Women only
- No healthy volunteers
- Adult
Who may be able to join
- PCOS diagnosis
- 18 years of age or older
- Body Mass Index below 35
- Willing to use any form of contraception for the duration of the study
Who cannot join
- Diabetes
- Pregnancy
- Liver or heart disease or other health problems
- Taking medications that affect insulin resistance
Trial locations and contacts
1 site in 1 country.
United States1 site
University of California at San Francisco
San Francisco, California, 94143
About this study
The study will recruit 40 subjects with Polycystic Ovary Syndrome (PCOS) as defined by the NIH criteria. The subjects will be pre-screened for insulin sensitivity using fasting insulin and glucose levels and oral glucose tolerance test. The 20 most insulin resistant subjects will undergo measurements of in vivo insulin action by hyperinsulinemic, euglycemic clamp. Body composition will be measured by dual-energy X-ray absorptiometry (DEXA). Plasma lipids and markers of oxidative stress will be measured. They will then receive open label controlled release alpha lipoic acid (CRLA) at 800 mg twice daily for 16 weeks. After treatment hyperinsulinemic euglycemic clamps, DEXA, plasma lipids and markers of oxidative stress will be repeated.
Hypotheses: LA will improve insulin sensitivity in PCOS subjects; LA will reduce oxidative stress, testosterone levels and improve cardiovascular risk factors.
Read the detailed description
Insulin resistance commonly occurs in patients with Polycystic Ovary Syndrome (PCOS) and may be responsible for many of the long term complications of PCOS. Patients with PCOS are at increased risk for developing type 2 diabetes and the metabolic syndrome (hypertension, dyslipidemia and cardiovascular disease). Data suggest that oxidative stress contributes to insulin resistance and thus inhibitors of oxidative stress improve insulin action. Alpha Lipoic Acid (LA) is synthesized in the liver and other tissues and is a key component of several mitochondrial enzyme complexes responsible for oxidative glucose metabolism and cellular energy production. When used pharmacologically, LA functions as a safe and effective antioxidant, recycling vitamins C and E,elevating glutathione levels,and lowering reactive oxygen species. Cell culture studies reveal that LA reverses the effects of oxidative stress and improving insulin action. Preliminary clinical data indicate that antioxidants may improve insulin resistance in PCOS patients. We propose, therefore, to study LA's effects on insulin-stimulated glucose uptake (insulin clamp) in a well characterized population of insulin resistant PCOS patients. Because these patients usually present in the adolescent and teenage years, the development of safe, long-term, treatment strategies are needed.
- Conditions
- Insulin Resistance, Oxidative Stress
- Being tested
- Alpha Lipoic Acid
- Keywords
- PCOS, polycystic ovary syndrome, polycystic ovarian syndrome, alpha lipoic acid, insulin resistance, oxidative stress
- Medical subject headings
- Insulin Resistance, Polycystic Ovary Syndrome
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Alpha Lipoic AcidDietary supplement
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Jul 2007 (estimated)
- Study startMar 2006
- Primary completionJul 2010
- Study completionJul 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Insulin ResistanceStudies of the same condition, open and under way.
- More trials run by University of California, San FranciscoThe 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 1
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 22 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of California, San Francisco
- Sponsor type
- University, hospital or other
- Collaborators
- National Institutes of Health (NIH)
- Responsible party
- Sponsor
- Investigators
- Umesh Masharani, MD, Principal investigator, University of California, San FranciscoIra Goldfine, MD, Principal investigator, University of California, San Francisco
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00505427
- Sponsor's protocol ID
- 8476-27691-01
- Status last verified
- Jun 2013
- First submitted
- 20 Jul 2007
- Last updated
- 1 Jul 2013
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Masharani U, Gjerde C, Evans JL, Youngren JF, Goldfine ID. Effects of controlled-release alpha lipoic acid in lean, nondiabetic patients with polycystic ovary syndrome. J Diabetes Sci Technol. 2010 Mar 1;4(2):359-64. doi: 10.1177/193229681000400218.
PubMed 20307398
Study at a glance
From the registry record, last updated by the sponsor on 1 Jul 2013. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Alpha Lipoic Acid and Polycystic Ovary Syndrome
- ClinicalTrials.gov ID
- NCT00505427
- Acronym / sponsor ID
- 8476-27691-01
- Conditions
- Insulin Resistance, Oxidative Stress
- Keywords
- PCOS, polycystic ovary syndrome, polycystic ovarian syndrome, alpha lipoic acid, insulin resistance, oxidative stress
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 22 participants (actual)
- Lead sponsor
- University of California, San FranciscoUniversity, hospital or other
- Collaborators
- National Institutes of Health (NIH)
- Study start
- Mar 2006
- Primary completion
- Jul 2010 (actual)
- Study completion
- Jul 2010 (actual)
- First posted
- 23 Jul 2007 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The study will recruit 40 subjects with Polycystic Ovary Syndrome (PCOS) as defined by the NIH criteria. The subjects will be pre-screened for insulin sensitivity using fasting insulin and glucose levels and oral glucose tolerance test. The 20 most insulin resistant subjects will undergo measurements of in vivo insulin action by hyperinsulinemic, euglycemic clamp. Body composition will be measured by dual-energy X-ray absorptiometry (DEXA). Plasma lipids and markers of oxidative stress will be measured. They will then receive open label controlled release alpha lipoic acid (CRLA) at 800 mg twice daily for 16 weeks. After treatment hyperinsulinemic euglycemic clamps, DEXA, plasma lipids and markers of oxidative stress will be repeated.
Hypotheses: LA will improve insulin sensitivity in PCOS subjects; LA will reduce oxidative stress, testosterone levels and improve cardiovascular risk factors.
Detailed description
Insulin resistance commonly occurs in patients with Polycystic Ovary Syndrome (PCOS) and may be responsible for many of the long term complications of PCOS. Patients with PCOS are at increased risk for developing type 2 diabetes and the metabolic syndrome (hypertension, dyslipidemia and cardiovascular disease). Data suggest that oxidative stress contributes to insulin resistance and thus inhibitors of oxidative stress improve insulin action. Alpha Lipoic Acid (LA) is synthesized in the liver and other tissues and is a key component of several mitochondrial enzyme complexes responsible for oxidative glucose metabolism and cellular energy production. When used pharmacologically, LA functions as a safe and effective antioxidant, recycling vitamins C and E,elevating glutathione levels,and lowering reactive oxygen species. Cell culture studies reveal that LA reverses the effects of oxidative stress and improving insulin action. Preliminary clinical data indicate that antioxidants may improve insulin resistance in PCOS patients. We propose, therefore, to study LA's effects on insulin-stimulated glucose uptake (insulin clamp) in a well characterized population of insulin resistant PCOS patients. Because these patients usually present in the adolescent and teenage years, the development of safe, long-term, treatment strategies are needed.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
Who may qualify
- Ages
- 18 to 50 years
- Sex
- Female only
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- PCOS diagnosis
- 18 years of age or older
- Body Mass Index below 35
- Willing to use any form of contraception for the duration of the study
Key exclusion criteria (4 listed)
- Diabetes
- Pregnancy
- Liver or heart disease or other health problems
- Taking medications that affect insulin resistance
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 |
|---|---|---|
| Alpha Lipoic Acid | Dietary supplement | – |
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Jul 2013.
- Derived from this study: PubMed 20307398Masharani U, Gjerde C, Evans JL, Youngren JF, Goldfine ID. Effects of controlled-release alpha lipoic acid in lean, nondiabetic patients with polycystic ovary syndrome. J Diabetes Sci Technol. 2010 Mar 1;4(2):359-64. doi: 10.1177/193229681000400218.
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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.
Umesh Masharani, MD principal investigator
University of California, San Francisco
Ira Goldfine, MD principal investigator
University of California, San Francisco
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Alpha Lipoic Acid in people with Insulin Resistance and Oxidative Stress, run by University of California, San Francisco 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 4 inclusion and 4 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 1 Jul 2013. 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 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00505427, which also lists 1 linked publication.
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 1 Jul 2013.