在患有异性食道炎的儿童的食道活检中,Granzyme B的含量升高
Helena Thulin1,2, Jesper Säfholm3, Joachim Lundahl1,4
1Department of Clinical Science and Education, Karolinska Institutet, Stockholm, Sweden.
Journal of pediatric gastroenterology and nutrition
|February 20, 2024
概括
消化管活检中的高Granzyme B (GzmB) 水平表明它在活跃的eosinophilic食道炎 (EoE) 中的作用. 这一发现有助于理解EoE病原体和潜在的诊断标记.
科学领域:
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
- 儿科 儿科 儿科
背景情况:
- 性食道炎 (EoE) 是一种由抗原引发的免疫媒介食道炎症疾病.
- 了解EoE中特定的炎症机制对于诊断和治疗至关重要.
研究的目的:
- 使用ex vivo活检诱导方法调查EoE中的炎症反应.
- 为了确定与活跃的EoE和缓解相关的特定炎症标志物.
主要方法:
- 从儿童的食道活检活动EoE,EoE缓解,和对照被刺激ex vivo与食品提取物 (牛奶,小麦,蛋).
- 对45种炎症标志物进行了超级分析,活检进行了组织学分析.
- 大酶B (GzmB),IL-1ra和CXCL8是研究的主要标记物.
主要成果:
- 与对照组和缓解期患者相比,活跃的EOE患者的Granzyme B (GzmB) 水平显著更高.
- 在活性EoE中,IL-1ra水平较低,而在活性EoE中,CXCL8在刺激后增加.
- 组织学分析显示,在活跃的EoE活检中,GzmB阳性细胞显著增加.
结论:
- 在食道粘膜中增加的GzmB,一种破坏屏障的蛋白酶,表明在儿童活跃EoE的病变发生中起着重要作用.
- GzmB可以作为活性EOE的潜在诊断生物标志物.
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