Summary
This study was designed to obtain early evidence that S 12024-2 has potential central pharmacological activity and cognition-enhancing properties in patients with Alzheimer’s disease (AD). This was a single centre, double-blind, crossover study employing three oral doses of S 12024-2 (50, 100, 200mg once daily) and placebo administered over 7 days (Latin square design). 12 outpatients with mild AD (Mini-Mental State Examination scores 18 to 26) were selected according to the National Institute for Neurological and Communication Disorders and Stroke-Alzheimer’s Disease and Related Disorders Association criteria. Clinical and electrophysiological assessments were used as follows:
-
• Clinical assessment was performed using: (a) a semicomputerised battery assessing memory and attention (VDL); (b) the Clinician Interview-Based Impression of Change (CIBIC); (c) an Activities of Daily Living scale filled in by the caregiver
-
• Electrophysiological assessment was performed using Quantitative EEG (qEEG) and Event Related Potentials (ERPs).
All measures at the end of each period (day 7) were compared with baseline measures (D0). No statistically significant treatment effect was shown in any clinical assessment. However, the CIBIC showed a trend in favour of active treatment (S 12024-2 100mg >200mg >50mg >placebo). qEEG showed a significant increase in β1 and a decrease in δ activities at 200mg versus placebo (p = 0.01) indicating nonspecific stimulation of diurnal attention. ERPs showed significant treatment activity (p = 0.05) on two parameters: amplitude and latency of the Mismatch Negativity and the Processing Negativity suggesting an improvement in automatic processing. In conclusion, the study showed good clinical tolerability of S 12024-2 and preliminary evidence of a central pharmacodynamic activity.
Similar content being viewed by others
References
Davis KL, Thal LJ, Gamzu ER, et al. A double-blind placebo-controlled multicenter study of tacrine for Alzheimer’s disease. N Engl J Med 1992; 327: 1253–9
Dysken MW, Mendels J, LeWitt P, et al. Milacemide: A placebo-controlled study in senile dementia of the Alzheimer type. J Am Geriatr Soc 1992; 40: 503–6
Farlow M, Gracon SI, Hershey LA, et al. A controlled trial of tacrine in Alzheimer’s disease. The Tacrine Study Group. JAMA 1992; 268: 2523–9
Allain H, Lieury A, Gandon JM. Psychopharmacology of memory components. In: Hindmarch J, Stonier PD, editors. Human psychopharmacol. 4. London: John Wiley & Sons Ltd, 1993: 143–64
Simpson PM, Surmon DJ, Wesnes KA, et al. The cognitive drug research computerised assessment system for demented patients: a validation study. Br J Clin Pharmacol 1991; 31: 577–8
Allain H, Wesnes K, Neuman E, et al. Acceptability and clinical activity of 4 weeks’ treatment by S12024-2 in 53 in-patient with moderate to severe Alzheimer’s Disease. Neurobiol Aging 1994; 15(1 Suppl.): S136–137
Carey GJ, Domeney AM, Costall B, et al. Effects of S12024-2 on the performance of marmosets in an object discrimination task. Br J Pharmacol 1993; 108: 297
Castagné I, Detolle-Sarbach S, Guez D. Pharmacological properties of S12024-2: a potential cognitive enhancer drug. International course on neurogerontology and psychogeriatrics 1993; 24–May, La oruna, Spain. Barcelona Prous Science Publishers
Lacroix P, Reymann JM, Rocher N, et al. Effects of S12024-2 on memory impairment in aged rats. 6th Congress of the European College of Neuropharmacology, 1993; Budapest, Hungary
Lepagnol J, Lestage P. Effets facilitateurs mnémocognitifs du S12024. Interaction avec la neurotransmission vasopressinergique. Congrès de la Société des Neurosciences. Strasbourg, France: 1992; A93: 86–7
McKhann G, Drachman D, Folstein M, et al. Clinical diagnosis of Alzheimer’s disease. NINCDS-ADRDA work group under the auspices of Department of Health and Human Services Task Force on Alzheimer’s Disease. Neurology 1984; 34: 939–44
Hachinski VC, Iliff LD, Zilhka E, et al. Cerebral blood flow in dementia. Arch Neurol 1975; 32: 632–7
Koch G, Gillings D. The application of the principle of intention to treat to the analysis of clinical trials. Drug Inf J 1991; 25: 411–24
Derouesné C, Renault B, Gueguen B, et al. Clinical and neuro-psycho-physiological evaluation of 3 doses of S12024-2 (0, 50, 100, 200mg once daily) during repeated oral administration (7 days) in 12 out-patients with mild-to-moderate Alzheimer’s disease. Fourth International Conference on Alzheimer’s disease and related disorders, 1994 29 July–3 August; Minneapolis, USA
Gueguen B, Renault B, Derouesné C, et al. Electrophysiological effect of a new promnesic drug: S12024. VIIth European Congress of Clinical Neurophysiology, July 1994; Budapest, Hungary
Wesnes K, Neuman E, deWilde HJG, et al. Pharmacodynamic effects of repeated oral administration of 4 different doses of S 12024-2 (cognitive enhancer) in 36 healthy elderly volunteers. Neurobiol Aging 1994; 15 Suppl. 1: S100
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Derouesné, C., Renault, B., Gueguen, B. et al. Neuropsychophysiological Evaluation of Three Doses of S 12024-2 in Mild-to-Moderate Alzheimer’s Disease. Clin. Drug Invest. 14, 301–306 (1997). https://doi.org/10.2165/00044011-199714040-00008
Published:
Issue Date:
DOI: https://doi.org/10.2165/00044011-199714040-00008