Table 1.
Diffuse (sub-) mucosal infiltrate: central airways | Diffuse (sub-) mucosal infiltrate: peripheral airways | Alveolar/venous infiltrate | |
---|---|---|---|
Neg control | 0±0 | 0±0 | 0±0 |
Non-readminb | |||
Fetal | 0±0 | 0.4±0.8 | 0.5±0.7 |
Neonatal | 0.5±1.0 | 0.3±0.5 | 0.4±0.5 |
Readminc | |||
Fetal | 1.3±1.2 | 1.7±1.5 | 1.3±1.2 |
Neonatal | 1.7±0.6 | 1.8±1.3 | 2.0±1.0 |
Adult control | 2.0±1.0 | 1.7±0.6 | 0.8±0.3 |
Neg, nontreated; Readmin, readministration at 3 months and tissue collection at 4 months; Non-readmin, non-readministered controls 4 months after perinatal gene transfer.
Lung sections were stained with hematoxylin and eosin and scored to evaluate the degree of lung inflammation after fetal and neonatal rAAV2/5 administration (1.0×1010 GC of rAAV2/5-β-Gal per animal; 1.5×1010 GC of rAAV2/5-fLUC per animal) and readministration at 3 months. Lung sections were scored according to the region as well as the degree of inflammation. Scores: 0, no immune cell infiltration; 0.5, few infiltrating cells with minimal significance; 1, mild lymphocytic infiltrate; 2, moderate lymphocytic infiltrate; 3, severe lymphocytic infiltrate. Data represent means±SD.
Non-readministration controls for the fetal and neonatal group 4 months after perinatal rAAV2/5 delivery.
Readministration animals for the fetal and neonatal group 1 month after readministration.