The pathogenesis of hereditary hæmophilia
The pathogenesis of hereditary hæmophilia
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遗传性血友病的发病机制
DOI:
10.1002/path.1700150402
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
T. Addis
中科院分区:
文献类型:
--
作者:
T. Addis
THE details of a preliminary inquiry into the cause of hereditary hemophilia were published in the Quarterly Journal of Medicim, 1910, vol. iv. No. 13. The following conclusions were arrived at:(1) The coagulation of the blood is delayed.(2) The severity of the clinical symptoms is directly proportional to the degree of the defect ill coagulation.(3) Thrombokinase, a substance derived from the cellular elements of the tissues and of the blood, initiates the procesa of coagulation. The rapidity of the coagulation of blood in; I wound depends on the amount of thrombokinase added to it. A much larger amount of thrombokinase is required to produce the rapid coagulation of hemophilic than of normal blood. It thus comes about that the blood in a wound in a hremophilic coagulates only where the concentration of thrombokinase is highest, ie on the sides of the wound. But thia clot prevents any more thrombokinase from reaching the blood in the centre of the wound, and if the amount of thrombin liberated from this peripheral clot is insufficient to coagulate the central blood, hamorrhage may con tinue indefinitely. The long-continued hzmorrhages seen in hzmophilia are thus explicable from the point of view of the defective coagulability of the blood alone.(4) Haemorrhage is no more easily produced in a htzmophilic than in a normal person. The distinction between them lies not in the occurrence, but in the amount, of the bleeding. There is thus no need to assume a special friability of the capillaries in hremophilia in order to explain the easily produced bruising and the so-called" spontaneous" haemorrhages from which they suffer. For these reasons, and because there ia no evidence of the presence of any other pathological factor capable of explaining the condition, the de6ciency in the coagulability of the blood was accepted as the proximate cause of hereditary hemophilia. In the preseut