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자료유형
학술저널
저자정보
저널정보
대한신생아학회 Neonatal medicine Neonatal medicine 제23권 제1호
발행연도
2016.1
수록면
43 - 52 (10page)

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Purpose: Hypoxic-ischemic brain injuries influence the mechanisms of signal trans- duction, including mitogen-activated protein kinase (MAPK) that regulates gene expression through transcription factor activity. Several attempts have been made to use bee venom (BV) to treat neurological diseases. However, limited data are avail- able for brain injuries such as neonatal hypoxic-ischemic encephalopathy (HIE) and neurodegenerative disorders. The purpose of this study was to investigate the neuro- protective effects of BV by determining the expression of activated MAPK pathways. Methods: We examined activation and cell viability in hypoxia (1% O2, 5% CO2, 94% N2) in low glucose-treated (H+low G) neuronal cells and astrocytes in the presence and absence of BV. After they were subjected to hypoxic conditions and treated with low glucose, the cells were maintained for 0, 6, 15, and 24 h under normoxic condi- tions. Results: Extracellular-signal-regulated kinases 1/2 (ERK1/2), p38 MAPK, and stress-activated protein kinases (SAPK)/Jun amino-terminal kinases (JNK) were activated in H+low G conditions. Particularly, phosphorylation of ERK1/2 was maximized 6 h after exposure to H+low G condition. BV specifically inhibited the phosphorylation of ERK1/2. However, BV had no effect on p38 MAPK or SAPK/JNK. In addition, BV improved neuronal cell and astrocytes viability following exposure to H+low G. Conclusion: ERK inactivation is known to mediate protective effects in hypoxic brain injury. Taken together, these results suggest that treatment with BV may be helpful in reducing hypoxic injury in neonatal HIE through the ERK signaling pathway.

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