TABLE 2.
Determination of tunica muscularis lesions and their histopathological scores along the GIT for control and PM2.5‐exposed animals
| Lesion and score | Tissue |
STC mean ± SD |
STE mean ± SD |
LTC mean ± SD |
LTE mean ± SD |
|---|---|---|---|---|---|
|
Intramural blood (0–6) |
PSI | 1.3 ± 1 | 1.8 ± 2 | 0.3 ± 0.6 | 1.0 ± 2 |
| MSI | 1.5 ± 1 | 1.5 ± 2 | 0.8 ± 2 | 0 ± 0 | |
| DSI | 1.8 ± 0.5 | 3.3 ± 2 | 1.4 ± 2 | 1.6 ± 2 | |
| Col | 0.5 ± 0.6 | 1.3 ± 1 | 0.4 ± 0.5 | 1.4 ± 2 | |
|
Wavy fibers (0–6) |
PSI | 1.3 ± 1 | 1.0 ± 1 | 0.7 ± 1 | 0 ± 0 |
| MSI | 0 ± 0 | 0 ± 0 | 0.8 ± 0.5 | 0 ± 0 | |
| DSI | 1.8 ± 2 | 2.0 ± 2 | 0.3 ± 0.5 | 1.3 ± 1 | |
| Col | 3.5 ± 2 | 4.0 ± 3 | 1.9 ± 1 | 2.0 ± 2 | |
|
Immune infiltration (0–6) |
PSI | 3.3 ± 2 | 3.8 ± 2 | 2.3 ± 1 | 1.7 ± 0.6 |
| MSI | 2.5 ± 2 | 4.3 ± 2 | 2.0 ± 1 | 1.3 ± 0.6 | |
| DSI | 3.5 ± 1 | 4.5 ± 0.6 | 2.1 ± 1 | 2.5 ± 1 | |
| Col | 4.0 ± 0 | 3.7 ± 0.6 | 1.8 ± 0.7 | 2.9 ± 2 | |
|
Vacuolisation (0–6) |
PSI | 2.5 ± 2 | 2.0 ± 0.8 | 1.3 ± 1 | 2.0 ± 1 |
| MSI | 1.3 ± 2 | 2.8 ± 1 | 1.0 ± 0.8 | 1.7 ± 2 | |
| DSI | 1.0 ± 1 | 1.0 ± 1 | 2.8 ± 2 | 2.2 ± 1 | |
| Col | 1.0 ± 1 | 1.0 ± 2 | 1.0 ± 1 | 1.8 ± 1 |
No significant differences are found between PM2.5‐exposed animals and their respective controls.
Abbreviations: Col, colon (nST = 3–4 nLT = 8); DSI, distal small intestine (nST = 4 nLT = 8); MSI, middle small intestine (nST = 4 nLT = 3–4); PSI, proximal small intestine (nST = 4 nLT = 3).