Table 1.
Summary of the studies testing nicotine or a nicotinic agonist in Parkinson’s disease patients
Study | Test agent | Type of study | # subjects | Duration | Final dose/day | Anti-parkinsonian effect | |
---|---|---|---|---|---|---|---|
Dose titration | Dose maintenance | ||||||
Ishikawa & Miyatake, 1993 | Smoking and nicotine gum | Open-label | 6 | Chronic smoker | NA | Yes | |
Fagerstrom et al., 1994 | Nicotine gum and patch | Open-label | 2 | ≥ 7 mo | 15 mg patch + gum | Yes | |
Clemens et al., 1995 | Nicotine gum | Double-blinded placebo-controlled | 48 | ND | 1 day | 3 × 2 mg | No |
Ebersbach et al., 1999 | Nicotine patch | Double-blinded crossover | 16 | ND | 12 hours | 7 mg# | No |
Kelton et al., 2000 | Nicotine iv and patch | Open-label | 15 | 2 wk | 1 wk | 14 mg | Yes |
Vieregge et al., 2001 | Nicotine patch | Double-blinded placebo-controlled | 32 | 1 wk | 2 wk | 14 mg | No |
Mitsuoka et al., 2002 | Nicotine gum | Open-label | 8 | ND | 1 day | NA | Yes |
Lemay et al., 2004 | Nicotine patch | Open-label | 22 | 22 days | 3 days | 21 mg | No |
Shoulson et al., 2006 | SIB-1508Y | Double-blinded placebo controlled | 77 | 2 wk | 2 wk | 10 mg | No |
Used the 35 mg patch, of which 14 mg is absorbed over 24 h, or 7 mg over 12 h. ND – not done; NA, not available.