Emotional lability is a discomforting syndrome observed in ALS patients. Presently, there is no satisfactory treatment for this condition. Dextromethorphan (DM) combined with non- therapeutic doses of quinidine (Q) may control this condition and improve quality of life. Efficacy of the DWQ product is based on producing therapeutic blood levels of DM by using Q to inhibit the extremely rapid metabolism of DM. This research proposal is designed to determine in humans: the minimum dose of Q required to convert extensive metabolizes of DM to poor metabolizes; the pharmacokinetic parameters of DWQ in single and multiple doses; and to develop a stable oral formulation of DAVQ. Two clinical trials in healthy volunteers are proposed. The first, to determine the lowest effective Q dose, will evaluate metabolism of a fixed DM dose as a function of Q doses ranging from 20-150 mg. daily. The second trial """""""" determine DM pharmacokinetics following single and multiple dosing of the DWQ ratio that converted 100 percent of the EM to PM. Preformulation, formulation development and stability studies would be carried out on the appropriate DM/Q product ratio to develop a dosage form for future clinical trials in ALS patients.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Small Business Technology Transfer (STTR) Grants - Phase I (R41)
Project #
1R41NS036481-01
Application #
2039190
Study Section
Special Emphasis Panel (ZRG1-NEUA (01))
Program Officer
Kerza-Kwiatecki, a P
Project Start
1997-06-03
Project End
1998-11-30
Budget Start
1997-06-03
Budget End
1998-11-30
Support Year
1
Fiscal Year
1997
Total Cost
Indirect Cost
Name
Irisys, Inc.
Department
Type
DUNS #
City
San Diego
State
CA
Country
United States
Zip Code
92121