Browsing by Author "Park, C."
Now showing 1 - 1 of 1
Results Per Page
Sort Options
- ItemZinc and platelet membrane microviscosity in Alzheimer's disease. The in vivo effect of zinc on platelet membranes and cognition(Health & Medical Publishing Group, 1997) Potocnik, F. C. V.; Van Rensburg, S. J.; Park, C.; Taljaard, J. J. F.; Emsley, R. A.Objectives. To investigate the effects of oral zinc supplementation on: (i) plasma zinc concentrations; (ii) platelet membrane microviscosity in vivo; and (iii) cognitive function of Alzheimer's disease (AD) patients. Design. An open-labelled pilot study. Setting. University of Stellenbosch Medical School and Stikland Hospital. Subjects. Six volunteer AD patients. Outcome measures. Plasma zinc levels, platelet membrane microviscosity and cognition (MMSE and ADAS-cog tests). Results. Oral zinc supplementation (30 mg/day) did not increase plasma zinc levels significantly, but significantly increased platelet membrane microviscosity (P = 0.02; 6 patients). Four patients, who underwent 12 months of evaluation, showed modest cognitive improvement on psychometric testing (Mini-Mental State Examination and the cognitive portion of the Alzheimer's Disease Assessment scale scores). Conclusions. While earlier literature promoted the use of zinc in AD patients, a recent study has contradicted this and implicated zinc in the aetiology of Alzheimer's disease. On the basis of the above results, it may be premature to single out zinc as a causal agent in AD.