McClean H E, Stewart A W, Riley C G, Beaven D W
N Z Med J. 1977 Oct 26;86(598):379-82.
The vitamin C status of 35 men, over 70 years of age from a residential home has been studied by measuring the plasma and leucocyte vitamin C levels and by assessing the intake of vitamin C. The mean plasma vitamin C level of the group was 16 +/- 15 mumol/l which was significantly lower (P less than 0.005) than that of a similar group of elderly men living alone (26 +/- 20 mumol/l). The mean leucocyte vitamin C levels of the two groups did not differ significantly. Twenty-nine (83 percent) of the institution group had plasma vitamin C levels below 23 mumol/l and 13 men (37 percent) had leucocyte vitamin C levels below 10 microgram/10(8)WBC. The residents who supplemented the institution diet with their own fresh fruit supplies had higher plasma and leucocyte vitamin C levels than the men who did not (P less than 0.01). Some clinical signs possible related to vitamin C deficiency were recorded but these could not later be statistically related to either plasma or leucocyte vitamin C levels. A case is made for vitamin C supplementation of puddings in institutional meals for the elderly.
通过测量血浆和白细胞中的维生素C水平以及评估维生素C的摄入量，对35名来自养老院、年龄超过70岁的男性的维生素C状况进行了研究。该组的平均血浆维生素C水平为16±15微摩尔/升，显著低于（P<0.005）一组类似的独居老年男性（26±20微摩尔/升）。两组的平均白细胞维生素C水平没有显著差异。养老院组中有29人（83%）的血浆维生素C水平低于23微摩尔/升，13名男性（37%）的白细胞维生素C水平低于10微克/10⁸白细胞。用自己的新鲜水果补充养老院饮食的居民，其血浆和白细胞维生素C水平高于未补充的男性（P<0.01）。记录了一些可能与维生素C缺乏有关的临床症状，但后来这些症状与血浆或白细胞维生素C水平均无统计学关联。有理由为老年人机构膳食中的布丁补充维生素C。
