In these experiments intra-uterine fractures, premature births and
still-born litters are frequently mentioned. This suggests naturally an
inquiry as to whether similar occurrences have been observed in human
scurvy. In considering the pathogenesis of human scurvy, we have
remarked on the meagreness of the data on this most interesting aspect
of this disorder. In view of the similarity between human and guinea-pig
scurvy, we should expect not only miscarriages and still-births to
result, but cases of congenital scurvy, especially of the latent or
rudimentary type.
=Scurvy Has Been Induced Also in the Monkey.=--The most extensive
investigation of this kind is that of Hart and Lessing, who brought
about scurvy in several young Macaci Rhesi which had been fed for some
months on boiled condensed milk with the addition of cooked rice and
pig-nuts. Typical scurvy resulted in all but one instance, and in this
case an old animal was used and a different pathological picture
developed. These experiments require brief reviewing, as the clinical
signs and gross pathology in monkeys differ somewhat from those
encountered in guinea-pigs, and particularly as these distinctions
render scurvy in monkeys and in infants practically identical.
Apart from general listlessness and lack of activity, the first sign is
hemorrhage of the gums, the characteristic sign of infantile scurvy.
This is stated to be constant; in the guinea-pig it is most exceptional.
Another sign characteristic of infantile scurvy is the subperiosteal
hemorrhage, which in the guinea-pig may be found as a small effusion
near one of the larger joints or the costochondral junctions, but in the
monkey consists of large effusions, similar to those described by
Barlow. Subperiosteal hemorrhages of the cranial bones were constantly
seen, and not infrequently involvement of the scapula and of the
maxilla. Hemorrhage into the orbit leading to exophthalmos and to
hemorrhagic discoloration of the upper lid--a lesion not infrequent in
human scurvy--is also described; in guinea-pigs we have met with
exophthalmos only in two instances. In all other respects scurvy in the
monkey resembles that in the guinea-pig, even to the extent of the
scorbutic rosary of the lower true ribs. Hart and Lessing describe the
presence of the "white line" of Fraenkel, which is referred to at length
in treating of the symptomatology of human scurvy. This is a shadow,
seen by means of the X-ray, traversing the long bones near their
epiphyses--a definite "shadow band" associated with a narrow light zone
lying just beneath it. This "white line" has been noted likewise by
Talbot, Dodd and Peterson in the scurvy of monkeys.
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