白介素-33抗体对小鼠下气道过敏性炎症的抑制作用
2012/10/11
摘要
目的:IL-33介导了Th2过敏性反应,在过敏性气道炎症中起到了关键作用。本试验旨在评价IL-33抗体对小鼠下气道过敏性炎症的治疗作用。
方法:本研究使用24只BALB/c小鼠。A组(对照组;n=6)小鼠采用生理盐水致敏和激发。B组(卵清蛋白[OVA]组;n=6)通过腹腔注射和鼻腔给予OVA建立过敏性气道炎症模型。C组(IgG对照组;n=6),在OVA激发之前采用腹腔注射对照IgG。D组(IL-3抗体组;n=6)小鼠在激发之前腹腔注射IL-33抗体。检测指标包括血清总的和OVA特异性IgE、支气管肺泡灌洗液(BAL)中嗜酸性粒细胞、中性粒细胞和淋巴细胞数。组织学检测以评价肺组织嗜酸性粒细胞浸润程度。通过检测增强的呼吸间歇(Penh)评价气道高反应性。
结果:与B组和C组相比,D组血清总的和OVA特异性IgE以及BAL嗜酸性粒细胞和中性粒细胞数显著下降(P<0.05)。与B组和C组相比,D组IL-33治疗显著降低了肺组织嗜酸性粒细胞浸润(P<0.05)。基于Penh检测的气道高反应性显示,IL-33治疗组与OVA组和对照IgG组相比,气道高反应性显著下降(50 mg/mL 乙酰甲胆碱;P<0.01)。
结论:IL-33抗体对下气道的过敏性炎症具有治疗作用。
(苏楠 审校)
J Asthma. 2012 Sep;49(7):738-43. Epub 2012 Jul 17.
Beneficial effect of anti-interleukin-33 on the murine model of allergic inflammation of the lower airway.
Kim YH, Park CS, Lim DH, Ahn SH, Son BK, Kim JH, Jang TY.
Source
Department of Otorhinolaryngology, INHA University College of Medicine , Incheon , Republic of Korea.
Abstract
OBJECTIVE:Interleukin (IL)-33, which mediates the T(h)2 allergic pathway, may play a key role in allergic airway inflammation. This study was conducted to evaluate the therapeutic potential of anti-IL-33 antibody for treatment of allergic inflammation of the lower airway in a murine model.
METHODS:Twenty-four BALB/c mice were used in this study. Saline was used for sensitization and challenge of mice in Group A (control group, n = 6). Mice in Group B (ovalbumin (OVA) group, n = 6) received intraperitoneal (ip) and intranasal OVA challenge. In Group C (control IgG group, n = 6), mice received ip injection with control IgG prior to OVA challenge. Mice in Group D (anti-IL-33 group, n = 6) received an ip injection of anti-IL-33 prior to challenge. Measurements of serum total and OVA-specific IgE and the number of eosinophils, neutrophils, and lymphocytes in bronchoalveolar lavage (BAL) fluid were performed. We performed histopathologic examination to evaluate the degree of eosinophilic infiltration in lung tissue. Airway hyperreactivity was measured according to change of enhanced pause (Penh).
RESULTS:A significant decrease in serum total and OVA-specific IgE and the number of eosinophils and neutrophils in BAL fluid was observed in Group D, compared with Group B or Group C (p < .05). In Group D, treatment with anti-IL-33 resulted in a significant decrease in eosinophilic infiltration in lung tissue, compared with Group B and Group C (p < .05). Degree of airway hyperreactivity, measured by Penh, showed a significant decrease in the anti-IL-33 treatment group, compared with the OVA group or the control IgG treatment group (p < .01, at 50 mg/mL of methacholine).
CONCLUSIONS: Anti-IL-33 has therapeutic potential for treatment of allergic inflammation of the lower airway.
J Asthma. 2012 Sep;49(7):738-43. Epub 2012 Jul 17.
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