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Effects of Methamphetamine in the Hippocampus of Cynomolgus Monkeys According to Age
최미란,방솔희,진영배,이영전,김한나,장규태,정경화,이상래,김대진 한국바이오칩학회 2017 BioChip Journal Vol.11 No.4
The aim of this study was to investigate differentially expressed genes (DEGs) and their functions in the hippocampi after methamphetamine (MA) administration in cynomolgus macaques according to age. Cynomolgus monkeys were divided by age as follows: control, 6-12 months (age 1, A1), 3-4 (A2) years, 7-9 (A3) years, and more than 11 years (A4). After MA was injected into the monkeys (2 mg/kg, intramuscular injection in each of A1, A2, A3 and A4), we performed large-scale transcriptome profiling in the hippocampus. Some genes associated with neuron differentiation, development, and transmission were validated with real-time RT-PCR. The expression patterns of validated genes were also investigated in the hippocampi of monkeys one year after a single injection of MA. The correlation of DEGs between A2 and A3 animals, who are similar to humans in early teens to early twenties, was higher than that of other groups, showing the possibility that biological mechanisms in the hippocampus of A2 and A3 are similarly affected by MA. Genes associated with neuron differentiation (FEZF1, GPR1N1, DLX1, and KCNIP2), neuron (projection) development (NGFR, CDKN1C, and VAX2), and synaptic transmission (SYT4, SYT1, GAD2, CORT, and NPTX2) were differentially expressed among control and MA-treated animals. In particular, the expression patterns of GPR1N1 among control and MA-treated animals following a single injection of MA were not altered even one year after single MA administration. Our results suggest that genes associated with neuron differentiation and synaptic transmission in the hippocampus of different maturation stages are differentially regulated by MA.
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Chronic saponin treatment attenuates damage to the pancreas in chronic alcohol-treated diabetic rats
최미란,곽수민,방솔희,정조은,김대진 고려인삼학회 2017 Journal of Ginseng Research Vol.41 No.4
Background: Chronic heavy alcohol consumption may raise the risk of developing type 2 diabetes mellitus. Saponins inhibit apoptosis of pancreatic islet cells and reduce lipid parameters. The present study was designed to investigate the effect of saponin on chronic ethanol-treated diabetic rats. Methods: LongeEvans Tokushima Fatty (LETO) and Otsuka LongeEvans Tokushima Fatty (OLETF) rats were pair-fed a LiebereDeCarli diet with and without 5% ethanol for 12 wks. Two weeks after starting the pair-feeding with the LiebereDeCarli diet, intraperitoneal injection of saponin was performed for 10 wks. To perform the experiments, rats were divided as follows: LETO-Control (LC), LETO-Ethanol (LE), LETOEthanol- Saponin (LES), OLETF-Control (OC), OLETF-Ethanol (OE), and OLETF-Ethanol-Saponin (OES). Results: The weights of epididymal and mesenteric fat tissue in LES and OES rats were the lightest from among the LETO and OLETF groups, respectively. The secretion of alanine aminotransferase and cholesterol in OES rats decreased significantly compared to their secretion in OC and OE rats, respectively. The islets of the pancreas in LE and OE rats showed clean, unclear, and smaller morphology compared to those of LC, LES, OC, and OES rats. In addition, the expression of insulin in the islets of the pancreas in LC, LES, OC, and OES rats was higher than in LE and OE rats. Conclusion: Saponin may not only be helpful in alleviating the rapid progress of diabetes due to chronic alcohol consumption in diabetic patients, but may also show potential as an antidiabetic drug candidate for diabetic patients who chronically consume alcohol.
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