respiratory system
• at 4 weeks of age, female, but not male, mice exhibit a >6-fold increase in apoptotic lung endothelial cells, as assessed by cleaved caspase-3 (CC3) staining
• increase in CC3 staining is >2-fold in female lungs at P5 and 19 weeks of age
• however, no differences in non-endothelial cell apoptosis are observed
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• at 4 and 19 weeks of age, female, but not male, mice exhibit a significant increase in lung endothelial proliferation, as assessed by Ki-67 staining
• however, no differences in non-endothelial cell proliferation are observed
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• female, but not male, mice exhibit enlarged distal airspaces
• mean linear intercept (MLI, interseptal alveolar distance) is already significantly increased at P5 and distal airway dilation persists at 4 and 19 weeks of age
• however, alveolar septal thickness is normal
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• female, but not male, mice develop an obstructive, emphysema-like lung phenotype
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• female, but not male, mice exhibit increased forced vital capacity (ml) and forced expiratory volume in 100 ms (ml) at 20 weeks of age
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• both female and male mice exhibit increased inspiratory capacity (ml) at 20 weeks of age
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• female, but not male, mice exhibit increased total lung capacity (ml) at 20 weeks of age
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• female, but not male, mice exhibit increased vital capacity (ml) at 20 weeks of age
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• female, but not male, mice exhibit decreased airway resistance (cm H2O/ml/sec) at 20 weeks of age
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• female, but not male, mice exhibit increased static and dynamic lung compliance (ml/cm H2O) at 20 weeks of age
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cellular
• at 4 weeks of age, female, but not male, mice exhibit a >6-fold increase in apoptotic lung endothelial cells, as assessed by cleaved caspase-3 (CC3) staining
• increase in CC3 staining is >2-fold in female lungs at P5 and 19 weeks of age
• however, no differences in non-endothelial cell apoptosis are observed
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• at 4 and 19 weeks of age, female, but not male, mice exhibit a significant increase in lung endothelial proliferation, as assessed by Ki-67 staining
• however, no differences in non-endothelial cell proliferation are observed
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cardiovascular system
• at 4 weeks of age, female, but not male, mice exhibit a transient 14% reduction of endothelial cell number in the lung vascular compartment
• however, numbers of type I and type II pneumocytes, macrophages, and PDGFRA+ mesenchymal cells are normal
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