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鼻内 OVA+LPS 嗜中性粒细胞性气道炎症模型(C57BL/6,文献参考)

连续三日鼻内给予 OVA(100 μg)+LPS(Eisenbarth 方案):肺 Th2("Th2pathic")细胞群扩增,甲基胆碱 25/50 mg/mL 时 OVA-LPS 组气道反应较 OVA 组显著升高,为嗜中性/混合型气道炎症范式。

Outcome measures

获得可供光学显微镜观察的 H&E 染色组织切片:细胞核蓝紫色、细胞质与结缔组织纤维粉红色,用于观察组织中细胞的整体结构与形态细节。本方案本身不产出病理评分数值,也不提供特定分子标志物的定量结果。

Experimental animals

Hematoxylin and Eosin (H&E) staining for histopathology

鼻内 OVA+LPS 嗜中性粒细胞性气道炎症模型(C57BL/6,文献参考)

Age
not reported in source; ex-vivo endpoint-collected fixed tissue section, HE readout
Tissue
lung

鼻内 OVA+LPS 嗜中性粒细胞性气道炎症模型(C57BL/6,文献参考)

Age
未记载周龄,终点取材组织切片 HE 判读(离体)
Tissue
lung

Experimental procedures

脱蜡(Dewaxing) 石蜡切片置于二甲苯中脱蜡 3 次,每次 00:03:00。 复水(Rehydration) 石蜡切片依次置于 100% 乙醇中 3 次、每次 00:03:00,再置于 95% 乙醇中 1 次、00:03:00,随后用水漂洗。 苏木素核染色(Hematoxylin staining) 石蜡切片以苏木素染液染色 00:00:20,随后在流水下冲洗 00:01:00。 分化与返蓝(Differentiation and bluing) 石蜡切片置于返蓝液中 00:01:00,随后在流水下冲洗 00:01:00;此步使细胞核呈现蓝色。 伊红染色(Eosin staining) 石蜡切片以伊红复染 00:00:10;此步使细胞质成分与结缔组织纤维呈现粉红色。 脱水与透明(Dehydration and Clearing) 石蜡切片依次置于 95% 乙醇中 00:02:00、100% 乙醇中 2 次、每次 00:02:00,随后置于二甲苯中 2 次、每次 00:02:00。 封片(Mounting) 石蜡切片以 Permount 封片介质加盖玻片封固。

Model identity

Model name
鼻内 OVA+LPS 嗜中性粒细胞性气道炎症模型(C57BL/6,文献参考)
Species
mouse
Taxonomy ID
10090
Strain
C57BL/6

Biological characteristics

Research questions
LPS 佐剂条件下气道中性粒细胞炎症与 AHR 机制。
Limitations
文献参考模型,不代表公司实际保有、供应或质检;非经典铝佐剂 Th2 路径;与 OVA/alum 模型不可互换表述。

Experimental methods

Experimental protocols

  • Hematoxylin and Eosin (H&E) staining for histopathology

    Hematoxylin and eosin (H&E) staining of fixed, paraffin-embedded tissue sections (4 μm). The workflow covers dewaxing, rehydration, hematoxylin nuclear staining, bluing, eosin counterstaining, dehydration and clearing, and coverslipping, yielding blue-purple nuclei and pink cytoplasm and connective tissue fibers for light-microscopic assessment of cellular and tissue morphology.

Reagents and materials

References

  1. Fink Marc Y, Qi Xiulan, Shirey Kari Ann, Fanaroff Rachel, Chapoval Svetlana, Viscardi Rose M. Mice Expressing Cosegregating Single Nucleotide Polymorphisms (D298G and N397I) in TLR4 Have Enhanced Responses to House Dust Mite Allergen.. Journal of immunology (Baltimore, Md. : 1950). 2022; PMID: 35396219
  2. Whitehead Gregory S, Nakano Keiko, Wilkinson Christina L, Patterson Antonio M, Upadhyay Sandeep, Massri Abdull J. Urokinase plasminogen activator receptor attenuates allergen-induced eosinophil migration and airway hyperresponsiveness.. American journal of respiratory cell and molecular biology. 2026; PMID: 41134983
  3. Hu Hang, Wang Xing, Guo Linlin, Zeng Ziling, Tang Hongmei, Zhang Yun. α‑Cyperone targets the PAK1‑JNK/NF‑κB axis to modulate dendritic cells maturation and Th2/Th9 differentiation in an asthma model.. International journal of molecular medicine. 2026; PMID: 42596835
  4. Nathalia L. Oliveira; Samantha Gruenheid. Hematoxylin and Eosin (H&E) staining for histopathology. protocols.io, v1, 2026-07-31. DOI: 10.17504/protocols.io.kxygxr9jdg8j
  5. Epredia Signature Series Hematoxylin (7221), 产品信息页, Fisher Scientific
  6. Epredia Signature Series Bluing Reagent (7301), 产品信息页, Fisher Scientific
  7. Epredia Signature Series Eosin Y (7111), 产品信息页, Fisher Scientific
  8. Xylene, Fisherbrand HistoPrep (HC7001GAL), 产品信息页, Fisher Scientific
  9. Fisher Chemical Permount Mounting Medium (SP15 产品族), 产品信息页, Fisher Scientific
  10. Ethanol (CID 702, CAS 64-17-5), PubChem 化合物标准记录
  11. ARRIVE 2.0 guidelines