Objective: To study the effect of glutamate on the expression of vascular endothelial growth factor (VEGF) mRNA and protein in cultured rat astrocytes. Methods: Cultured rat astrocytes were randomly divided into 6 groups: control group (C), glutamate group (G), QA group (Q), DCG-IV group (D), L-AP4 group (L) and glutamate+MCPG group (G+M). Cells were cultured under nomoxic condition (95% air, 5% CO2). RT-PCR and ELISA methods were used to detect the expression of VEGF mRNA and protein in cultured astrocytes, respectively. G+M group was preincubated with 1mM MCPG for 30 min prior to the stimulation with glutamate. There were 7 time points at 0, 4, 8, 12, 16, 24 and 48 h in each group except G+M group. Results: The expression of VEGF mRNA and protein did not differ significantly among D group, L group and C group. Different from that in C group, the expression of VEGF mRNA and protein could be enhanced both in a dose-dependent and time-dependent manner in G group and Q group. Meanwhile, the enhanced expression of VEGF mRNA and protein in G group was completely suppressed by MCPG after 24 h. Conclusion: Glutamate can increase the expression of VEGF mRNA and protein in cultured astrocytes, which may be due to the activation of group I metabotropic glutamate receptors in astrocytes.

Objective: To study the effect of glutamate on the expression of vascular endothelial growth factor (VEGF) mRNA and protein in cultured rat astrocytes. Methods: Cultured rat astrocytes were randomly divided into 6 groups: control group (C), glutamate group (G), QA group (Q), DCG-IV group (D), L-AP4 group (L) and glutamate+MCPG group (G+M). Cells were cultured under nomoxic condition (95% air, 5% CO2). RT-PCR and ELISA methods were used to detect the expression of VEGF mRNA and protein in cultured astrocytes, respectively. G+M group was preincubated with 1mM MCPG for 30 min prior to the stimulation with glutamate. There were 7 time points at 0, 4, 8, 12, 16, 24 and 48 h in each group except G+M group. Results: The expression of VEGF mRNA and protein did not differ significantly among D group, L group and C group. Different from that in C group, the expression of VEGF mRNA and protein could be enhanced both in a dose-dependent and time-dependent manner in G group and Q group. Meanwhile, the enhanced expression of VEGF mRNA and protein in G group was completely suppressed by MCPG after 24 h. Conclusion: Glutamate can increase the expression of VEGF mRNA and protein in cultured astrocytes, which may be due to the activation of group I metabotropic glutamate receptors in astrocytes.

Child ; Health Knowledge, Attitudes, Practice ; Humans ; Lead Poisoning ; prevention & control

Child ; China ; Humans ; Lead Poisoning ; prevention & control ; Public Health Practice

Child ; Disease Susceptibility ; etiology ; Environmental Exposure ; Environmental Pollutants ; Health Status ; Humans

[Summary] Next-generation sequencing is a revolution in the approach of genetic testing. It broadens the insight on the genetic diagnosis and research of monogenetic diabetes,which is represented by neonatal diabetes mellitus and maturity onset diabetes of the young.And it reveals advantages in exploring novel mutations.

0.05). Conclusion The nerve bridge compounded of bFGF heparin, acellular nerve basal lamina tube and Schwann cells can facilitate nerve regeneration. [Key words] Peripheral nerve; Tissue engineer; Acellular nerve basal lamina tube; Basic fibroblast growth factor(bFGF); Schwann cells