摘要
目的建立变应性鼻结膜炎小鼠模型,研究Nod样受体蛋白3(NLRP3)信号通路在变应性鼻结膜炎中的作用。方法33只雌性C57小鼠(SPF级)随机分为3组:对照组,实验组,NLRP3^(-/-)组。实验组和NLRP3^(-/-)组分别于第0、4、7、14、21天行腹腔注射含卵清蛋白(OVA)100μg与佐剂Al(OH)0.2 mL/只。间隔3 d后,每周连续5 d用5%OVA分别点每眼每鼻各10μL诱发过敏症状;在致敏和激发阶段,对照组均用等量PBS替代。观察小鼠眼部、鼻部症状并进行评分。应用ELISA方法检测血清中OVA特异性IgE、IL-4、IL-17及IL-18含量。HE染色检测小鼠睑结膜及鼻黏膜组织变化。Real-time PCR检测睑结膜及鼻黏膜组织NLRP3 mRNA的表达。结果实验组和NLRP3^(-/-)组均诱发出鼻部、眼部过敏症状;实验组鼻部出现过敏症状时间为(10.500±1.080)d,眼部出现过敏症状时间为(20.300±2.058)d;NLRP3^(-/-)组鼻部出现过敏症状时间为(13.400±1.955)d,眼部出现过敏症状时间为(20.900±2.132)d;NLRP3^(-/-)组鼻部过敏时间较实验组显著延长(P<0.05),但眼部过敏时间同实验组差异无统计学意义(P>0.05)。实验组及NLRP3^(-/-)组血清OVA特异性IgE及IL-4、IL-17水平均高于对照组,差异均有统计学意义(P<0.05)。实验组血清IL-18含量较对照组及NLRP3^(-/-)组显著增加(P<0.05)。实验组及NLRP3^(-/-)组睑结膜及鼻黏膜组织病变明显。实验组睑结膜及鼻黏膜NLRP3 mRNA表达较对照组及NLRP3^(-/-)组显著增加(P<0.05)。结论变应性鼻结膜炎发病机制复杂,受多因素影响;NLRP3信号通路在其发病中起一定的促进作用。
Objective The objective of this study was to establish a mouse model of allergic rhinoconjunctivitis and investigate the role of the NLRP3 signaling pathway in allergic rhinoconjunctivitis.Methods Thirty-three female C57 mice(SPF)were randomLy divided into 3 groups:the control group,the experimental group,and the NLRP3^(-/-)group.On days 0,4,7,14,and 21,the experimental group and NLRP3^(-/-)group received a 0.2 mL intraperitoneal injection of medicine containing OVA(100μg)and adjuvant Al(OH)3(4 mg),respectively.After an interval of 3 days,each eye and nose were dosed with 10μL of 5%OVA for five consecutive days a week to induce allergic symptoms.During sensitization and excitation stages,the control group was replaced with an equiva⁃lent amount of PBS.Ocular and nasal symptoms were observed and scored.The levels of OVA-specific IgE,IL-4,IL-17,and IL-18 in serum were measured using ELISA,while changes in palpebral conjunctiva and nasal mucosa were assessed by hematoxylin-eosin staining.The expression of NLRP3 mRNA in conjunctival tissue and nasal mucosa was determined using real-time PCR analysis.Statistical analysis was performed using SPSS17.0 software with P<0.05 considered as statistically significant difference.Results The experimental group and NLRP3^(-/-)group exhibited induced nasal and ocular allergic symptoms.In the experimental group,the duration of nasal allergy symptoms was(10.500±1.080)days,while the duration of eye allergy symptoms was(20.300±2.058)days.In the NLRP3^(-/-)group,the duration of nasal allergy symptoms was(13.400±1.955)days,and for eye allergy symp⁃toms it was(20.900±2.132)days.The duration of nasal allergies in the NLRP3^(-/-)group significantly exceeded that in the experimental group(P<0.05),whereas there were no significant differences observed in eye allergy durations between these two groups(P>0.05).Levels of OVA-specific IgE,IL-4,and IL-17 were significantly higher in both the experimental and NLRP3^(-/-)groups compared to those in the control group(P<0.05).Additionally,
作者
宫玉波
郭小华
芦文俊
李元超
仇长宇
石圆圆
夏丽萍
石琳
吴玮
罗灵
GONG Yubo;GUO Xiaohua;LU Wen-jun;LI Yuanchao;QIU Changyu;SHI Yuanyuan;XIA Liping;SHI Lin;WU Wei;LUO Ling(Department of Ophthalmology,Strategic Support Force Medical Center,Beijing 100101,China;不详)
出处
《实用医学杂志》
CAS
北大核心
2024年第14期1922-1927,共6页
The Journal of Practical Medicine
基金
国家环境保护环境感官应激与健康重点实验室开放基金(编号:19ZX84)。
