A Randomized, Double-blind, Placebo-controlled Trial of Curcumin in Leber's Hereditary Optic Neuropathy (LHON)
|First Submitted Date ICMJE||September 11, 2007|
|First Posted Date ICMJE||September 12, 2007|
|Last Update Posted Date||December 24, 2012|
|Start Date ICMJE||May 2005|
|Primary Completion Date||Not Provided|
|Current Primary Outcome Measures ICMJE
||visual outcome [ Time Frame: 1 year ]|
|Original Primary Outcome Measures ICMJE||Same as current|
|Change History||Complete list of historical versions of study NCT00528151 on ClinicalTrials.gov Archive Site|
|Current Secondary Outcome Measures ICMJE||Not Provided|
|Original Secondary Outcome Measures ICMJE||Not Provided|
|Current Other Outcome Measures ICMJE||Not Provided|
|Original Other Outcome Measures ICMJE||Not Provided|
|Brief Title ICMJE||A Randomized, Double-blind, Placebo-controlled Trial of Curcumin in Leber's Hereditary Optic Neuropathy (LHON)|
|Official Title ICMJE||A Randomized, Double-blind, Placebo-controlled Trial of Curcumin in Leber's Hereditary Optic Neuropathy (LHON)|
Background Leber's Hereditary Optic Neuropathy (LHON) is a maternally inherited ocular disorder associated with a mutation in mtDNA . The common manifestation is visual loss which caused by the respiratory chain enzymes complex dysfunction resulting in increased oxidative stress enzymes production.
Purpose To determine whether curcumin which is an antioxidant agent is beneficial to the patients with 11778 LHON mutation.
Material and Method Seventy patients with 11778 LHON mutation were randomly treated with oral curcumin (500 mg/day) and placebo for 1 year. The visual acuity, computerized visual field, electrophysiologic parameters and oxidative stress enzymes in plasma were compared before and after treatment at 3, 6, and 12 months interval.
Leber's hereditary optic neuropathy (LHON) is a maternally inherited disease that is characterized by a simultaneous or more common sequential bilateral loss of central vision, which typically occurs during the teenager years or early adulthood. The disease may be progressive and the patients eventually become blind. In contrast to blindness in patients caused by congenital diseases, the patients who develop blindness caused by LHON will have more trouble in their life because they previously had better vision. Although LHON is associated with mitochondrial DNA mutation at a variable nucleotide position but no certain mechanism of optic nerve injury has been found. It has been postulated that a defect in a complex of respiratory chain enzyme which is caused by mitochondrial DNA dysfunction, results in an increase of free radical substances that interfere with optic nerve function in LHON. Some antioxidant substances have been used to decrease the progression of visual impairment. However, there have been few therapeutic trials for LHON.
Curcumin, a component of tumeric, which comes from the root Curcumin longa has antioxidant, anti-inflammatory and anti-carcinogenic activities. There is some evidence which suggests that curcumin contributes to the in vitro removal of free radical gradients in thalassemic serum and to a clinical improvement of thalassemic patients. We propose a randomized controlled trial study of curcumin, which is an antioxidant substance, for LHON. This study will provide not only an insight into the therapeutic efficacy of curcumin, a kind of Thai herb, for LHON but also the development of future therapeutic strategies to prevent blindness.
|Study Type ICMJE||Interventional|
|Study Phase||Phase 3|
|Study Design ICMJE||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
|Condition ICMJE||Optic Atrophy, Hereditary, Leber|
|Intervention ICMJE||Drug: curcumin
curcumin 250 mg twice a day in the first group. placebo 1 capsule twice a day in the second group.
|Study Arms||Placebo Comparator: 2
Intervention: Drug: curcumin
|Publications *||Not Provided|
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
|Recruitment Status ICMJE||Completed|
|Estimated Enrollment ICMJE||70|
|Completion Date||December 2007|
|Primary Completion Date||Not Provided|
|Eligibility Criteria ICMJE||
|Ages||8 Years and older (Child, Adult, Senior)|
|Accepts Healthy Volunteers||Yes|
|Contacts ICMJE||Contact information is only displayed when the study is recruiting subjects|
|Listed Location Countries ICMJE||Thailand|
|Removed Location Countries|
|NCT Number ICMJE||NCT00528151|
|Other Study ID Numbers ICMJE||123/2547|
|Has Data Monitoring Committee||Yes|
|U.S. FDA-regulated Product||Not Provided|
|IPD Sharing Statement||Not Provided|
|Responsible Party||Not Provided|
|Study Sponsor ICMJE||Mahidol University|
|Collaborators ICMJE||Not Provided|
|PRS Account||Mahidol University|
|Verification Date||August 2004|
ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP