GROSS J
J Exp Med. 1959 Jun 1;109(6):557-69. doi: 10.1084/jem.109.6.557.
The skin of severely scorbutic guinea pigs which were losing weight contained no detectible neutral salt-extractible collagen. Conditions of growth (weight gain) which actively induced the formation of neutral salt-extractible collagen in the skin of normal guinea pigs failed to do so in the animal with ascorbic acid deficiency. No excess of non-collagenous proline was found in neutral salt extracts of scorbutic skin as compared with normal. Fractionation of these extracts failed to reveal the presence of significant amounts of a soluble component containing unusual proportions of glycine and proline relative to hydroxyproline. It is concluded that deficiency of ascorbic acid either interferes with the synthesis of new collagen in intact skin or causes its destruction and removal as rapidly as it is produced.
体重减轻的严重坏血病豚鼠的皮肤中,未检测到可被中性盐提取的胶原蛋白。在正常豚鼠皮肤中能积极诱导形成可被中性盐提取的胶原蛋白的生长条件(体重增加),在缺乏抗坏血酸的动物中却无法实现。与正常情况相比,坏血病皮肤的中性盐提取物中未发现过量的非胶原脯氨酸。对这些提取物进行分级分离,未发现存在大量相对于羟脯氨酸而言含有异常比例甘氨酸和脯氨酸的可溶性成分。结论是,抗坏血酸缺乏要么干扰完整皮肤中新胶原蛋白的合成,要么导致其刚产生就迅速被破坏和清除。