Studies on pseudorabies (infectious bulbar paralysis, mad itch) I. Histology of the disease, with a note on the symptomatology
Studies on pseudorabies (infectious bulbar paralysis, mad itch) I. Histology of the disease, with a note on the symptomatology
复制标题
DOI:
10.1084/jem.58.4.415
复制
发表时间:
1933-10-01
影响因子:
15.3
通讯作者:
Hurst, EW
中科院分区:
文献类型:
--
作者:
Hurst, EW
The histology of pseudorabies differs materially in various animals. In rabbits, subcutaneous, intradermal or intramuscular inoculation led to local inflammation and necrosis. Infection ascends the peripheral nerve (possibly both in-terstitially and by the axis-cylinders) to the corresponding spinal ganglia and segments of the spinal cord, where primary degeneration of nerve and glial cells takes place. The nerve-cell changes are probably responsible for the itching. Death ensues soon after virus reaches the medulla, before visible changes have been produced here. Intracerebral inoculation was followed by characteristic lesions in the meninges, in subpial glial cells, and in superficially placed nerve cells. Morbid changes in the lungs are not necessarily related to presence of virus, but specific lesions may develop. Intranuclear inclusions bearing some resemblance to those in herpetic encephalitis, yellow fever, etc., occur in cells derived from all embryonic layers. In guinea pigs, the disease resembles closely that in rabbits, and is modified only by their slightly greater resistance. In monkeys, after intracerebral inoculation, widespread degeneration and necrosis of cortical nerve cells were accompanied by specific nuclear alterations in nerve and glial cells, but not in cells of mesodermal origin. No lesions are found in other viscera. In the spontaneous disease in cows, lesions approximate more closely those in monkeys than those in rabbits. In pigs, vascular and interstitial lesions predominate, nerve cell degeneration is relatively slight, and typical inclusions are not observed; these differences probably explain the benign course following subcutaneous inoculation. The lymphatic system, too, participates in reactions to the virus.