Vir S C, Love A H
Int J Vitam Nutr Res. 1978;48(3):274-80.
The vitamin C status of 186 elderly subjects living at home and institutionalised in hospital, residential accommodation and sheltered dwelling was studied. Subjects from hospital and home receiving multivitamin supplements regularly were grouped separately. Ascorbic acid deficiency (plasma ascorbic acid less than or equal to 0.3 mg/100 ml) was noted in 47.2, 39.0, 46.2 and 47.4 per cent subjects of home, hospital, residential accommodation and sheltered dwelling, respectively. All subjects receiving multi-vitamin had plasma ascorbic acid (PAA) levels greater than or equal to 0.3 mg/100 ml. The mean levels of PAA appeared higher in females than males and the percentage incidence of low vitamin C status was higher in males than females in the majority of the groups. Leucocyte ascorbic acid (LAA) levels were measured in only 26 subjects of residential accommodation and of these 38.5 per cent had low LAA levels (less than 15 microgram/10(8) cells). The biochemical vitamin C deficiency was not accompanied by any recognised clinical manifestation.
对186名居家老人以及在医院、养老院和庇护所居住的老人的维生素C状况进行了研究。定期服用多种维生素补充剂的医院老人和居家老人被分别分组。结果发现，居家老人、医院老人、养老院老人和庇护所老人中，抗坏血酸缺乏（血浆抗坏血酸小于或等于0.3毫克/100毫升）的比例分别为47.2%、39.0%、46.2%和47.4%。所有服用多种维生素的老人血浆抗坏血酸（PAA）水平均大于或等于0.3毫克/100毫升。大多数组中，女性的PAA平均水平似乎高于男性，男性维生素C低水平状态的发生率高于女性。仅对26名养老院老人测量了白细胞抗坏血酸（LAA）水平，其中38.5%的老人LAA水平较低（低于15微克/10⁸个细胞）。维生素C缺乏的生化指标变化并未伴有任何公认的临床表现。
