Loss of neutrophil and natural killer cell function following feline immunodeficiency virus infection.

Loss of neutrophil and natural killer cell function following feline immunodeficiency virus infection.
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猫免疫缺陷病毒感染后中性粒细胞和自然杀伤细胞功能丧失。

DOI:
10.1089/vim.1993.6.119
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发表时间:
1993
期刊:
影响因子:
2.2
通讯作者:
Lafrado,LJ
Lafrado,LJ
中科院分区:
医学4区
文献类型:
--
作者:
Hanlon,MA;Marr,JM;Hayes,KA;Mathes,LE;Stromberg,PC;Ringler,S;Krakowka,S;Lafrado,LJ

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实验感染Mt.猫免疫缺陷病毒(FIVMA)是从家猫身上分离出来的一种慢病毒,表现出免疫缺陷样综合症的迹象,会导致一过性淋巴结病、发热、口腔炎、肠炎、神经异常和免疫抑制。体外检测FIVMA感染对中性粒细胞和自然杀伤细胞(NK)功能的影响。中性粒细胞化学发光(CL)反应被抑制,NK介导的细胞毒作用也被降低。与对照组相比,感染猫的中性粒细胞CL降低了50%。这种CL的丢失是在感染后6个月内出现的。此外,在感染FIVMA的猫中,NK介导的细胞毒作用比对照猫低约50%。先天免疫力的丧失与猫的CD4/CD8淋巴细胞比率倒置和淋巴细胞有丝分裂减少平行,最早出现在感染后5周。这些结果表明,FIVMA感染会导致感染猫的免疫缺陷障碍,类似于人类免疫缺陷病毒感染。
Experimental infection with the Mt. Airy isolate of feline immunodeficiency virus (FIVMA), a lentivirus isolated from a domestic cat exhibiting signs of an immunodeficiency-like syndrome, results in transient lymphadenopathy, fever, stomatitis, enteritis, neurologic abnormalities, and immunosuppression. The effects of FIVMAinfection on neutrophil and natural killer cell (NK) function were examinedin vitro. Suppression of neutrophil chemiluminescence (CL) responses, as well as reduction in NK-mediated cytotoxicity were demonstrated. Neutrophil CL was decreased by 50% in infected cats when compared to control values. This loss of CL was present through 6 months after infection. In addition, NK-mediated cytotoxicity was approximately 50% less in FIVMA infected cats than in controls. Loss of innate immunity was paralleled with inversion in feline CD4/CD8 lymphocyte ratios and decreases in lymphocyte mitogenesis seen as early as 5 weeks after infection. These results suggest that FIVMAinfection induces an immunodeficiency disorder in infected cats similar to that seen in human immunodeficiency virus infections.
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