Expression of Thrombospondin-1 and CD36 and CD47 Receptors in the Rat Brain after Exposure to Damaging Factors in the Early Postnatal Period

The expression of thrombospondin-1 (TS-1) and its receptors CD47 and CD36 in the cerebral cortex and hippocampus of rats under damaging factors in the early postnatal period was studied. After hypoxia on the 7th day of postnatal development, an increase in the number of CD47-expressing cerebral endothelial cells (days of postnatal development: P28-P70) and reduction in the number of TS-1-expressing astrocytes in the cortex at P28 were observed. In animals subjected to early postnatal stress at the age of P2-P15, a decrease in TS-1-expressing astrocytes in the cortex and hippocampus was registered (predominantly at the age of P28). It was noted that these changes characterize the period of long-term effects (P28-P70) of early stress that is relevant to the processes of reparative angiogenesis and arresting of neurological deficits.