Journal: European Journal of Inflammation
Article Title: Role of the Notch signaling pathway in regulating macrophage polarization in a rat model of fibrotic pigeon breeder’s lung
doi: 10.1177/1721727x231202431
Figure Lengend Snippet: Figure 3. Typical microscopic pathological images of HE and Masson staining in the lung tissues of rats in each group (n = 9). (a) HE staining (×100). In the control group, pulmonary alveoli, bronchioles and blood vessels were normal, and no changes in inflammation or fibrosis were observed. In the M group, the infiltration of interstitial inflammatory cells in the lung centered on the airway was remarkable, with proliferated fibrous connective tissue and noticeable proliferated fibrous tissue and smooth muscle tissue around the bronchioles and glands. The alveolar septum was widened with occasional multinucleated giant cells (indicated by a black arrow), and loose granuloma was formed. The inflammatory cell infiltration and fibrous connective tissue proliferation along the bronchus in the M+DAPT group were less severe than those in the M group. (b) Comparison of the collagen volume fractions (CVFs) was analyzed at a magnification of 40x using ImageJ software. CVF is the percentage of the blue area of collagen occupied in the total tissue area, and a higher CVF value indicates more severe fibrosis. (c) Masson staining (×100). Normal thin layers of connective tissue were observed under the submucosa of the bronchioles in the Ctrl group. In the M group, fibrosis of the bronchus and surrounding interstitial tissue was noticeable, and fibrosis developed around the granuloma in some areas (indicated by a yellow arrow). Fibrosis in the M+DAPT group was less severe than that in the M group. Ctrl, control. M, model. M+DAPT, model+DAPT.
Article Snippet: The animals in the M+DAPT group received the same treatment as the M group, as well as DAPT (HY13027; MedChemExpress, New Jersey, US) at 0.05 mg/kg, which was administered intraperitoneally twice a week for four consecutive weeks followed by once a week until the 20th week.
Techniques: Staining, Control, Comparison, Software