Kim DJ, Cho SY, Kim SU, Jo DW, Hwang HI, Shin HK, Jun YH. IGF-1 Protects Neurons in the Cortex and Subventricular Zone in a Periventricular Leucomalacia Model.
In Vivo 2021;
35:307-312. [PMID:
33402478 DOI:
10.21873/invivo.12260]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIM
Chronic cerebral hypoperfusion affects early and mature neurons in the subventricular zone (SVZ) and cerebral cortex. Herein, we investigated the effects of insulin-like growth factor-1 (IGF-1), a neurogenesis-promoting agent, on neurons in these regions in periventricular leucomalacia (PVL) model rats.
MATERIALS AND METHODS
Following right carotid artery ligation, the rats were placed in a hypoxia chamber and injected with recombinant IGF-1 (0.1 and 1 μg/μl). Their brain sections were immunohistochemically analysed using anti-nestin and anti-NeuN antibodies.
RESULTS
The numbers of early-neuronal cells in the SVZ and mature neurons in the cerebral cortex were higher and lower, respectively, in the PVL group than in the control group. The number of NeuN-positive cells was significantly higher in the IGF-treated group than in the PVL group.
CONCLUSION
PVL increased the number of early neuronal cells in the SVZ, reducing the survival of mature neurons in the cerebral cortex; IGF-1 reversed these effects.
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