Acute Myocardial InfarctionNCT00755131
Effects of Cardiac Rehabilitation on High Mobility Group Box-1 Levels After Acute Myocardial Infarction
A study testing Exercise-based Cardiac Rehabilitation program in people with Acute Myocardial Infarction, run by Federico II University at 1 site in Italy.
Trial summary
This purpose of this study is to examine the relationship between HMGB-1 and postinfarction predictors of outcome such as cardiopulmonary and echocardiographic parameters before and after a 6-month exercise-based cardiac rehabilitation program. Read more about this study
- Who is it for?
- Ages 35 to 75 years
- Conditions the study is for
- Acute Myocardial Infarction
- What is being tested?
- Exercise-based Cardiac Rehabilitation program
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 75 participants
- Where
- 1 siteItaly
- Study dates
- Sep 2008to Oct 2009
- Phase
- Interventional
- 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 35 to 75 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Acute Myocardial Infarction
Who cannot join
- BMI higher than 30 and lower than 18
- Residual myocardial ischemia
- Severe ventricular arrhythmias
- IIb or III degree atrio-ventricular block
- Valvular disease requiring surgery
- Pericarditis
Show all 12Show fewer
- Severe renal dysfunction (i.e. creatinine >2.5 mg/dl)
- Severe concomitant non-cardiac disease such as cancer
- Liver dysfunction (alanine aminotransferase/aspartate aminotransferase level >1.5 times the upper normal limit)
- Dementia
- Any systemic disease limiting exercise
- Inability to participate in a prospective study for any logistic reason
Trial locations and contacts
1 site in 1 country.
About this study
This purpose of this study is to examine the relationship between HMGB-1 and postinfarction predictors of outcome such as cardiopulmonary and echocardiographic parameters before and after a 6-month exercise-based cardiac rehabilitation program.
Read the detailed description
Exercise-based Cardiac Rehabilitation after acute myocardial infarction (AMI) has beneficial effects on cardiovascular functional capacity, quality of life, risk factors modification, and morbidity and mortality. Mounting evidences suggest that inflammation plays a key role both on initiation and progression of atherosclerosis. Several markers of systemic inflammation appear to be active effectors in the pathophysiology of athero-thrombotic disease leading to the occurrence of AMI.
The high mobility group box 1 (HMGB-1) is a ubiquitous nuclear protein constitutively expressed in quiescent cells, and it has been implicated in several cellular functions, including determination of nucleosomal structure and stability, and binding of transcription factors to DNA sequences. HMGB-1 has been recently recognized as a critical mediator of inflammatory diseases. In fact, the passive release of this protein from necrotic or damaged cells represents an effective stimulus triggering the inflammatory response. Specifically, HMGB-1 binds to the receptor for advanced glycation end products (RAGE) and, in turns, it activates mitogen-activated protein-kinase (MAPK) and nuclear factor-κB (NF-κB).
This intracellular pathway leads to the production of several pro-inflammatory cytokines. Interestingly, increased levels of HMGB-1 have been observed in atherosclerotic lesions, suggesting that HMGB-1 might be involved in the pathophysiology of atherosclerosis.
This study was designed to investigate the relationship between HMGB-1 and strong postinfarction predictors of outcome such as cardiopulmonary and echocardiographic parameters before and after a 6-month exercise-based Cardiac Rehabilitation program.
- Conditions
- Acute Myocardial Infarction
- Being tested
- Exercise-based Cardiac Rehabilitation program
- Keywords
- Cardiac Rehabilitation, High Mobility Group Box proteins, Inflammatory markers, Cardiopulmonary Functional Capacity, Maximal Oxygen Consumption, Echocardiography, Left Ventricular Ejection Fraction, Left Ventricular Chambers Dilation, Left Ventricular Remodeling, Left Atrium Remodeling, Cardiac Remodeling, Exercise Training
- Medical subject headings
- Ventricular Remodeling
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Exercise-based Cardiac Rehabilitation programOther
Also called Cardiac Rehabilitation
Trained patients attend the exercise training protocol for 6 months on hospital ambulatory-based regimen 3 times/week. Training sessions are supervised under continuous electrocardiography monitoring by a cardiologist, a physiotherapist and a graduate nurse. Each session is preceded by a 5-min warming-up and followed by a 5-min cooling-down. Exercise is performed for 30 min on a bicycle ergometer with the target of 60-70% of the peak oxygen consumption achieved at the initial symptom-limited cardiopulmonary exercise test. Exercise protocol is performed with a gradual increase in exercise workload until the achievement of the predefined target.
| Study group | Role | What they receive |
|---|---|---|
| Training Group | Experimental | Postinfarction patients undergo 6-month exercise-based Cardiac Rehabilitation Program Receives: Other: Exercise-based Cardiac Rehabilitation program |
| Control Group | No intervention | Postinfarction patients NOT undergoing 6-months exercise-based Cardiac Rehabilitation program |
What is being measured
The primary outcome is the main question the study is designed to answer.
High Mobility Group Box-1 (HMGB1)Levels at Baseline and 6 Months
High mobility group box-1 (HMGB1) is a ubiquitous nuclear protein, constitutively expressed in quiescent cells, where it is involved in several cellular functions, including determination of nucleosomal structure and stability, and binding of transcription factors to DNA sequences. HMGB1 has been recently recognized as a critical mediator of inflammatory processes: the passive release of this protein from necrotic or damaged cells represents an effective stimulus triggering the inflammatory response.
Measured: baseline and 6-month follow-up
Secondary outcomes (1)
Peak Oxygen Consumption (VO2peak) at Baseline and 6 Months
Oxygen consumption at peak exercise stress testing (VO2peak) was obtained breath-by-breath with use of a computerized metabolic cart. VO2peak was recorded as the mean value of VO2 during the last 20 s of the test and expressed in millilitres per kilogram per minute.
Measured: Baseline and 6-month follow-up
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Sep 2008 (estimated)
- Study startSep 2008
- Primary completionJun 2009
- Study completionOct 2009
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.
- Publications (12)Papers the sponsor has linked to this study.
- Other trials for Acute Myocardial InfarctionStudies of the same condition, open and under way.
- More trials run by Federico II UniversityThe 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 N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Investigator
- Enrolment
- 75 participants (actual)
Sponsor and investigators
- Lead sponsor
- Federico II University
- Sponsor type
- University, hospital or other
- Investigators
- Carlo Vigorito, M.D., Study director, Federico II University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00755131
- Sponsor's protocol ID
- UNINA-15775
- Status last verified
- Dec 2009
- First submitted
- 17 Sep 2008
- Last updated
- 2 Feb 2010
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Publications
Giallauria F, Cirillo P, Lucci R, Pacileo M, De Lorenzo A, D'Agostino M, Moschella S, Psaroudaki M, Del Forno D, Orio F, Vitale DF, Chiariello M, Vigorito C. Left ventricular remodelling in patients with moderate systolic dysfunction after myocardial infarction: favourable effects of exercise training and predictive role of N-terminal pro-brain natriuretic peptide. Eur J Cardiovasc Prev Rehabil. 2008 Feb;15(1):113-8. doi: 10.1097/HJR.0b013e3282f00990.
PubMed 18277196Giallauria F, Galizia G, Lucci R, D'Agostino M, Vitelli A, Maresca L, Orio F, Vigorito C. Favourable effects of exercise-based Cardiac Rehabilitation after acute myocardial infarction on left atrial remodeling. Int J Cardiol. 2009 Aug 21;136(3):300-6. doi: 10.1016/j.ijcard.2008.05.026. Epub 2008 Aug 3.
PubMed 18676038Giallauria F, De Lorenzo A, Pilerci F, Manakos A, Lucci R, Psaroudaki M, D'Agostino M, Del Forno D, Vigorito C. Reduction of N terminal-pro-brain (B-type) natriuretic peptide levels with exercise-based cardiac rehabilitation in patients with left ventricular dysfunction after myocardial infarction. Eur J Cardiovasc Prev Rehabil. 2006 Aug;13(4):625-32. doi: 10.1097/01.hjr.0000209810.59831.f4.
PubMed 16874155Giallauria F, De Lorenzo A, Pilerci F, Manakos A, Lucci R, Psaroudaki M, D'Agostino M, Del Forno D, Vigorito C. Long-term effects of cardiac rehabilitation on end-exercise heart rate recovery after myocardial infarction. Eur J Cardiovasc Prev Rehabil. 2006 Aug;13(4):544-50. doi: 10.1097/01.hjr.0000216547.07432.fb.
PubMed 16874143Giallauria F, Lucci R, Pietrosante M, Gargiulo G, De Lorenzo A, D'Agostino M, Gerundo G, Abete P, Rengo F, Vigorito C. Exercise-based cardiac rehabilitation improves heart rate recovery in elderly patients after acute myocardial infarction. J Gerontol A Biol Sci Med Sci. 2006 Jul;61(7):713-7. doi: 10.1093/gerona/61.7.713.
PubMed 16870634Cirillo P, Golino P, Calabro P, Cali G, Ragni M, De Rosa S, Cimmino G, Pacileo M, De Palma R, Forte L, Gargiulo A, Corigliano FG, Angri V, Spagnuolo R, Nitsch L, Chiariello M. C-reactive protein induces tissue factor expression and promotes smooth muscle and endothelial cell proliferation. Cardiovasc Res. 2005 Oct 1;68(1):47-55. doi: 10.1016/j.cardiores.2005.05.010.
PubMed 16023093Cirillo P, Cali G, Golino P, Calabro P, Forte L, De Rosa S, Pacileo M, Ragni M, Scopacasa F, Nitsch L, Chiariello M. Tissue factor binding of activated factor VII triggers smooth muscle cell proliferation via extracellular signal-regulated kinase activation. Circulation. 2004 Jun 15;109(23):2911-6. doi: 10.1161/01.CIR.0000129312.43547.08. Epub 2004 Jun 1.
PubMed 15173027Libby P, Ridker PM, Maseri A. Inflammation and atherosclerosis. Circulation. 2002 Mar 5;105(9):1135-43. doi: 10.1161/hc0902.104353.
PubMed 11877368Yamada S, Maruyama I. HMGB1, a novel inflammatory cytokine. Clin Chim Acta. 2007 Jan;375(1-2):36-42. doi: 10.1016/j.cca.2006.07.019. Epub 2006 Jul 25.
PubMed 16979611Giallauria F, Cirillo P, Lucci R, Pacileo M, D'Agostino M, Maietta P, Vitelli A, Chiariello M, Vigorito C. Autonomic dysfunction is associated with high mobility group box-1 levels in patients after acute myocardial infarction. Atherosclerosis. 2010 Jan;208(1):280-4. doi: 10.1016/j.atherosclerosis.2009.07.025. Epub 2009 Jul 14.
PubMed 19651408Giallauria F, Cirillo P, Lucci R, Pacileo M, D'agostino M, Maietta P, Vitelli A, Chiariello M, Vigorito C. Effects of exercise-based cardiac rehabilitation on high mobility group box-1 levels after acute myocardial infarction: rationale and design. J Cardiovasc Med (Hagerstown). 2009 Aug;10(8):659-63. doi: 10.2459/JCM.0b013e32832d4979.
PubMed 19451831Giallauria F, Cirillo P, D'agostino M, Petrillo G, Vitelli A, Pacileo M, Angri V, Chiariello M, Vigorito C. Effects of exercise training on high-mobility group box-1 levels after acute myocardial infarction. J Card Fail. 2011 Feb;17(2):108-14. doi: 10.1016/j.cardfail.2010.09.001. Epub 2010 Oct 29.
PubMed 21300299
Study at a glance
From the registry record, last updated by the sponsor on 2 Feb 2010. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Cardiac Rehabilitation on High Mobility Group Box-1 Levels After Acute Myocardial Infarction
- ClinicalTrials.gov ID
- NCT00755131
- Acronym / sponsor ID
- UNINA-15775
- Conditions
- Acute Myocardial Infarction
- Keywords
- Cardiac Rehabilitation, High Mobility Group Box proteins, Inflammatory markers, Cardiopulmonary Functional Capacity, Maximal Oxygen Consumption, Echocardiography, Left Ventricular Ejection Fraction, Left Ventricular Chambers Dilation
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 75 participants (actual)
- Lead sponsor
- Federico II UniversityUniversity, hospital or other
- Study start
- Sep 2008
- Primary completion
- Jun 2009 (actual)
- Study completion
- Oct 2009 (actual)
- First posted
- 18 Sep 2008 (estimated)
- Results
- Posted 25 Jan 2010
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This purpose of this study is to examine the relationship between HMGB-1 and postinfarction predictors of outcome such as cardiopulmonary and echocardiographic parameters before and after a 6-month exercise-based cardiac rehabilitation program.
Detailed description
Exercise-based Cardiac Rehabilitation after acute myocardial infarction (AMI) has beneficial effects on cardiovascular functional capacity, quality of life, risk factors modification, and morbidity and mortality. Mounting evidences suggest that inflammation plays a key role both on initiation and progression of atherosclerosis. Several markers of systemic inflammation appear to be active effectors in the pathophysiology of athero-thrombotic disease leading to the occurrence of AMI.
The high mobility group box 1 (HMGB-1) is a ubiquitous nuclear protein constitutively expressed in quiescent cells, and it has been implicated in several cellular functions, including determination of nucleosomal structure and stability, and binding of transcription factors to DNA sequences. HMGB-1 has been recently recognized as a critical mediator of inflammatory diseases. In fact, the passive release of this protein from necrotic or damaged cells represents an effective stimulus triggering the inflammatory response. Specifically, HMGB-1 binds to the receptor for advanced glycation end products (RAGE) and, in turns, it activates mitogen-activated protein-kinase (MAPK) and nuclear factor-κB (NF-κB).
This intracellular pathway leads to the production of several pro-inflammatory cytokines. Interestingly, increased levels of HMGB-1 have been observed in atherosclerotic lesions, suggesting that HMGB-1 might be involved in the pathophysiology of atherosclerosis.
This study was designed to investigate the relationship between HMGB-1 and strong postinfarction predictors of outcome such as cardiopulmonary and echocardiographic parameters before and after a 6-month exercise-based Cardiac Rehabilitation program.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Training Group | Experimental | Other: Exercise-based Cardiac Rehabilitation programPostinfarction patients undergo 6-month exercise-based Cardiac Rehabilitation Program |
| Control Group | No intervention | –Postinfarction patients NOT undergoing 6-months exercise-based Cardiac Rehabilitation program |
Who may qualify
- Ages
- 35 to 75 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- Acute Myocardial Infarction
Key exclusion criteria (12 listed)
- BMI higher than 30 and lower than 18
- Residual myocardial ischemia
- Severe ventricular arrhythmias
- IIb or III degree atrio-ventricular block
- Valvular disease requiring surgery
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 |
|---|---|---|
| Exercise-based Cardiac Rehabilitation programAlso: Cardiac RehabilitationTrained patients attend the exercise training protocol for 6 months on hospital ambulatory-based regimen 3 times/week. Training sessions are supervised under continuous electrocardiography monitoring by a cardiologist, a physiotherapist and a graduate nurse. Each session is preceded by a 5-min warming-up and followed by a 5-min cooling-down. Exercise is performed for 30 min on a bicycle ergometer with the target of 60-70% of the peak oxygen consumption achieved at the initial symptom-limited cardiopulmonary exercise test. Exercise protocol is performed with a gradual increase in exercise workload until the achievement of the predefined target. | Other | Training Group |
Primary outcome
High Mobility Group Box-1 (HMGB1)Levels at Baseline and 6 Months
Time frame: baseline and 6-month follow-up
High mobility group box-1 (HMGB1) is a ubiquitous nuclear protein, constitutively expressed in quiescent cells, where it is involved in several cellular functions, including determination of nucleosomal structure and stability, and binding of transcription factors to DNA sequences. HMGB1 has been recently recognized as a critical mediator of inflammatory processes: the passive release of this protein from necrotic or damaged cells represents an effective stimulus triggering the inflammatory response.
1 secondary outcome
Peak Oxygen Consumption (VO2peak) at Baseline and 6 Months
Time frame: Baseline and 6-month follow-up
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Feb 2010.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 18277196Giallauria F, Cirillo P, Lucci R, Pacileo M, De Lorenzo A, D'Agostino M, Moschella S, Psaroudaki M, Del Forno D, Orio F, Vitale DF, Chiariello M, Vigorito C. Left ventricular remodelling in patients with moderate systolic dysfunction after myocardial infarction: favourable effects of exercise training and predictive role of N-terminal pro-brain natriuretic peptide. Eur J Cardiovasc Prev Rehabil. 2008 Feb;15(1):113-8. doi: 10.1097/HJR.0b013e3282f00990.
- Background: PubMed 18676038Giallauria F, Galizia G, Lucci R, D'Agostino M, Vitelli A, Maresca L, Orio F, Vigorito C. Favourable effects of exercise-based Cardiac Rehabilitation after acute myocardial infarction on left atrial remodeling. Int J Cardiol. 2009 Aug 21;136(3):300-6. doi: 10.1016/j.ijcard.2008.05.026. Epub 2008 Aug 3.
- Background: PubMed 16874155Giallauria F, De Lorenzo A, Pilerci F, Manakos A, Lucci R, Psaroudaki M, D'Agostino M, Del Forno D, Vigorito C. Reduction of N terminal-pro-brain (B-type) natriuretic peptide levels with exercise-based cardiac rehabilitation in patients with left ventricular dysfunction after myocardial infarction. Eur J Cardiovasc Prev Rehabil. 2006 Aug;13(4):625-32. doi: 10.1097/01.hjr.0000209810.59831.f4.
- Background: PubMed 16874143Giallauria F, De Lorenzo A, Pilerci F, Manakos A, Lucci R, Psaroudaki M, D'Agostino M, Del Forno D, Vigorito C. Long-term effects of cardiac rehabilitation on end-exercise heart rate recovery after myocardial infarction. Eur J Cardiovasc Prev Rehabil. 2006 Aug;13(4):544-50. doi: 10.1097/01.hjr.0000216547.07432.fb.
- Background: PubMed 16870634Giallauria F, Lucci R, Pietrosante M, Gargiulo G, De Lorenzo A, D'Agostino M, Gerundo G, Abete P, Rengo F, Vigorito C. Exercise-based cardiac rehabilitation improves heart rate recovery in elderly patients after acute myocardial infarction. J Gerontol A Biol Sci Med Sci. 2006 Jul;61(7):713-7. doi: 10.1093/gerona/61.7.713.
- Background: PubMed 16023093Cirillo P, Golino P, Calabro P, Cali G, Ragni M, De Rosa S, Cimmino G, Pacileo M, De Palma R, Forte L, Gargiulo A, Corigliano FG, Angri V, Spagnuolo R, Nitsch L, Chiariello M. C-reactive protein induces tissue factor expression and promotes smooth muscle and endothelial cell proliferation. Cardiovasc Res. 2005 Oct 1;68(1):47-55. doi: 10.1016/j.cardiores.2005.05.010.
- Background: PubMed 15173027Cirillo P, Cali G, Golino P, Calabro P, Forte L, De Rosa S, Pacileo M, Ragni M, Scopacasa F, Nitsch L, Chiariello M. Tissue factor binding of activated factor VII triggers smooth muscle cell proliferation via extracellular signal-regulated kinase activation. Circulation. 2004 Jun 15;109(23):2911-6. doi: 10.1161/01.CIR.0000129312.43547.08. Epub 2004 Jun 1.
- Background: PubMed 11877368Libby P, Ridker PM, Maseri A. Inflammation and atherosclerosis. Circulation. 2002 Mar 5;105(9):1135-43. doi: 10.1161/hc0902.104353.
- Background: PubMed 16979611Yamada S, Maruyama I. HMGB1, a novel inflammatory cytokine. Clin Chim Acta. 2007 Jan;375(1-2):36-42. doi: 10.1016/j.cca.2006.07.019. Epub 2006 Jul 25.
- Background: PubMed 19651408Giallauria F, Cirillo P, Lucci R, Pacileo M, D'Agostino M, Maietta P, Vitelli A, Chiariello M, Vigorito C. Autonomic dysfunction is associated with high mobility group box-1 levels in patients after acute myocardial infarction. Atherosclerosis. 2010 Jan;208(1):280-4. doi: 10.1016/j.atherosclerosis.2009.07.025. Epub 2009 Jul 14.
- Background: PubMed 19451831Giallauria F, Cirillo P, Lucci R, Pacileo M, D'agostino M, Maietta P, Vitelli A, Chiariello M, Vigorito C. Effects of exercise-based cardiac rehabilitation on high mobility group box-1 levels after acute myocardial infarction: rationale and design. J Cardiovasc Med (Hagerstown). 2009 Aug;10(8):659-63. doi: 10.2459/JCM.0b013e32832d4979.
- Derived from this study: PubMed 21300299Giallauria F, Cirillo P, D'agostino M, Petrillo G, Vitelli A, Pacileo M, Angri V, Chiariello M, Vigorito C. Effects of exercise training on high-mobility group box-1 levels after acute myocardial infarction. J Card Fail. 2011 Feb;17(2):108-14. doi: 10.1016/j.cardfail.2010.09.001. Epub 2010 Oct 29.
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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.
Carlo Vigorito, M.D. study director
Federico II University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Exercise-based Cardiac Rehabilitation program in people with Acute Myocardial Infarction, run by Federico II University at 1 site in Italy.
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 1 inclusion and 12 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 2 Feb 2010. 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 Italy. 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.
Are results available for this study?
Yes. Results are posted in the registry (first posted 25 Jan 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?
High Mobility Group Box-1 (HMGB1)Levels at Baseline and 6 Months (time frame: baseline and 6-month follow-up). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00755131, which also lists 12 linked publications.
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 2 Feb 2010.