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A PET Study Examining Pharmacokinetics and Dopamine Transporter Receptor Occupancy Of Two Long-Acting Formulations of Methylphenidate in Adults

This study has been completed.
McNeil Consumer & Specialty Pharmaceuticals, a Division of McNeil-PPC, Inc.
Information provided by:
Massachusetts General Hospital Identifier:
First received: March 10, 2006
Last updated: July 11, 2011
Last verified: July 2011
The specific aim of this study is to document the pharmacokinetics of dopamine transporter DAT receptor occupancy of OROS MPH and Metadate CD using PET scanning with C-11 Altropane as the ligand. We hypothesize that CNS DAT occupancy of OROS MPH will be greater than that of Metadate CD at 10 hours after administration.

Condition Intervention Phase
Healthy Volunteers
Drug: OROS methylphenidate hydrochloride
Drug: methylphenidate hydrochloride
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Official Title: A PET Study Examining Pharmacokinetics and Dopamine Transporter Receptor Occupancy Of Two Long-Acting Formulations of Methylphenidate in Adults

Resource links provided by NLM:

Further study details as provided by Massachusetts General Hospital:

Primary Outcome Measures:
  • The DAT receptor occupancy of OROS MPH and Metadate CD using PET scanning with C-11 Altropane. Objective measures also provided by d and l ritalinic acid and methylphenidate levels at pre-dose, hr 9, 10 and 11.

Estimated Enrollment: 40
Study Start Date: March 2005
Estimated Study Completion Date: December 2005
Primary Completion Date: December 2005 (Final data collection date for primary outcome measure)
Detailed Description:
OROS-MPH's pharmacokinetic profile uses an increasing delivery of MPH over the day (ascending pharmacokinetic curve). It was designed to replace IR-MPH TID treatment. Another new long-acting formulation is Metadate CD. Metadate CD consists of capsules with two types of beads. It was designed to replace IR-MPH BID treatment. The main target of MPH in the brain is the dopamine transporter (DAT). We have an exquisitely sensitive methodology to measure DAT occupancy using C-11 Altropane and Positron Emission Tomography (PET). The time course of decay of the C-11 Altropane permits repeated imaging, thus allowing documentation of the pharmacokinetics of DAT receptor occupancy.

Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  1. Signed written informed consent to participate in the study.
  2. Age: 18 - 55
  3. If female, non-pregnant, non-nursing, using an adequate form of birth control or a negative serum pregnancy test.
  4. Supine and standing blood pressure within the range 110/60 to 150/90 mmHg.
  5. Heart rate, after resting for 5 minutes, within the range 46-90 beats/min.
  6. Subjects who are within 20% of the ideal weight for height.
  7. Right handed.

Exclusion Criteria:

  1. Diagnosis of any psychotic disorder, bipolar disorder, severe depression, severe anxiety, or Autism. Subjects with mild mood, oppositional, conduct, and anxiety disorders may be permitted to participate if considered appropriate by the investigator.
  2. Scores of Baseline Scales:

    Hamilton Depression Scale > 17 (out of a possible 67 on the 21-item scale) (Hamilton 1960) Beck Depression Inventory > 19 (out of a possible 63 on the 21-item scale) (Beck et al 1961) Hamilton Anxiety Scale > 21 (out of a possible 56 on the 14-item scale) (Hamilton 1959)

  3. Tics or Tourette's Syndrome.
  4. Diagnosis of ADHD
  5. History of head trauma with loss of consciousness, organic brain disorders, seizures, or neurosurgical intervention.
  6. Any clinically significant chronic medical condition, in the judgment of the investigator.
  7. Mental impairment as evidenced by an I.Q. <75.
  8. Exposure to dopamine receptor antagonists within the previous three (3) months.
  9. Exposure to radiopharmaceuticals within four (4) weeks prior to PET scan.
  10. Subjects receiving psychotropic medication.
  11. Any clinically significant abnormality in the screening laboratory tests, vital signs, or 12-lead ECG, outside of normal limits.
  12. Any woman of childbearing potential who is seeking to become pregnant or suspects that she may be pregnant.
  13. Subjects with a known recent history (within the past six (6) months) of illicit drug or alcohol dependence.
  14. Subjects diagnosed with glaucoma.
  15. Subjects at risk for MPH toxicity (e.g. individuals with arrhythmias, coronary artery disease, etc.).
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Please refer to this study by its identifier: NCT00301639

United States, Massachusetts
Massachusetts General Hospital
Cambridge, Massachusetts, United States, 02138
Sponsors and Collaborators
Massachusetts General Hospital
McNeil Consumer & Specialty Pharmaceuticals, a Division of McNeil-PPC, Inc.
Principal Investigator: Thomas Spencer, MD Massachusetts General Hospital
  More Information

Responsible Party: Thomas J. Spencer, MD, Massachusetts General Hospital Identifier: NCT00301639     History of Changes
Other Study ID Numbers: 2004-p-002189
Study First Received: March 10, 2006
Last Updated: July 11, 2011

Additional relevant MeSH terms:
Central Nervous System Stimulants
Physiological Effects of Drugs
Dopamine Uptake Inhibitors
Neurotransmitter Uptake Inhibitors
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Dopamine Agents
Neurotransmitter Agents
Cardiotonic Agents
Autonomic Agents
Peripheral Nervous System Agents
Protective Agents processed this record on May 25, 2017