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- W4386400870 abstract "Abstract Background This study focused on the major components of mucus, known as mucins, within the mucosal epithelium of the respiratory system in Iraqi Common Quail. Six quail were utilized in accordance with animal ethics guidelines from the College of Veterinary Medicine at the University of Al-Qadisiyah. Histological analysis, utilizing H&E staining, aimed to identify key respiratory system structures. PAS plus Alcian blue stains were employed to identify specific carbohydrates in the trachea, bronchi, and lungs. RT-qPCR was used to assess the gene expression levels of MUC1 and MUC4. Results The trachea and bronchi encompassed four distinct layers: tunica mucosa, tunica submucosa, hyaline cartilage, and tunica adventitia. The mucosa consisted of pseudostratified epithelium that transitioned into simple columnar cells toward the primary and secondary bronchioles. This transition further progressed into simple cuboidal and squamous epithelium at smaller tertiary branches of the secondary bronchioles. Notably, the bronchial tunica submucosa was thinner than the trachea. While hyaline cartilage was prominently present in the trachea, it became fragmented in the bronchi and diminished towards the lungs and secondary bronchioles. Lung tissue was characterized by numerous lobules housing alveoli connected to alveolar ducts and sacs, alongside an intricate network of blood vessels. The respiratory tissues, including the trachea, bronchi, and lungs, exhibited a strong affinity for PAS-combined Alcian blue stains. This confirmed the substantial presence of both acidic and neutral mucins within the epithelial cells and glands. The trachea demonstrated significantly elevated levels of acidic mucins and a concentrated amount? of neutral mucins. Transcriptome analysis indicated the expression of both MUC1 and MUC4 genes. Importantly, MUC4 expression surpassed that of MUC1 in the trachea, bronchi, and lungs. Conclusion This study highlights the similarity of histological structures in the trachea, bronchi, and lungs of quail to typical avian species. Moreover, it underscored the substantial presence of both acidic and neutral mucins, with MUC4 being the predominant mucin, potentially playing a pivotal role in regulating mucosal barrier functions and interacting with pathogens. Nonetheless, further investigation is warranted to elucidate MUC4’s role in respiratory epithelial cells." @default.
- W4386400870 created "2023-09-04" @default.
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- W4386400870 date "2023-09-02" @default.
- W4386400870 modified "2023-10-16" @default.
- W4386400870 title "Finding Expression of MUC1 and MUC4 in the Respiratory System of the Iraqi Common Quail (Coturnix coturnix)" @default.
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- W4386400870 doi "https://doi.org/10.1101/2023.09.01.555941" @default.
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