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RISS 인기검색어
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- 발행기관 : Spandidos Pub.] (검색결과 3 건)
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Park, Chul-Hong,Son, Hyung-U,Son, Minsik,Lee, Sang-Han Spandidos Pub.] 2011 Experimental and therapeutic medicine Vol.2 No.5
<P>Acer mono Max. sap (AmMs) is called 'Gol-Li-Su' or 'Go-Lo-Soe' in Korean, which means 'water beneficial to the bones'. It is reported that the sap contains several types of minerals and sugars. In particular, the calcium concentration of the sap is 36.5 times higher than that of commercial mineral water. Apart from its anti-osteoporosis effect, no reports have addressed the biological activities of AmMs against degenerative diseases. In the present study, we investigated whether AmMs alleviates gastric ulcer-related symptoms in a stress-induced mouse model. To assess the effect of AmMs on gastric ulcer-like symptoms, we carried out a water immersion restraint (WIRE) test and found that AmMs has potential in alleviating gastric ulcers in a concentration-dependent manner. These results indicate that the nutritional factors of the sap mitigate the gastric ulcer-related symptoms caused by stress-induced gastric lesions in mice. AmMs-treated mice exhibited a significant decrease in the ulcer index as compared to those treated with omeprazole or L-arginine. To examine one potential mechanism underlying this effect, we performed reverse transcription-polymerase chain reaction to ascertain whether molecular markers were associated with the mitigation of the gastric lesions. Epithelial and/or tissue nitric oxide synthase (NOS) was assessed to determine whether or not the genes were down-regulated dose-dependently by the sap. The levels of these enzymes were found to be lower in the tissue samples treated with AmMs compared with the levels in the control samples. These findings collectively suggest that AmMs significantly protects the gastric mucosa against WIRE stress-induced gastric lesions, at least in part, by alleviating inducible NOS and/or neuronal NOS expression.</P>
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Polymorphisms of IGFI contribute to the development of ischemic stroke.
Kim, Hak Jae,Kim, Su Kang,Park, Hae Jeong,Chung, Joo-Ho,Chun, Jinman,Yun, Dong Hwan,Kim, Young Ock Spandidos Pub.] 2012 Experimental and therapeutic medicine Vol.3 No.1
<P>Insulin-like growth factor 1 (IFG1) is neuroprotective in animal models of focal brain ischemia and correlates with ischemic stroke (IS) outcome in the elderly. In this study, we investigated whether single nucleotide polymorphisms (SNPs) of the IFG1 gene are associated with the development and clinical features of IS in a Korean population. A total of 119 patients with IS and 289 control subjects were recruited. Stroke patients were classified into subgroups according to the scores of the National Institutes of Health Stroke Survey (NIHSS; <6 and ???6) and the Modified Barthel Index (MBI; <60 and ???60). Among the SNPs of the IFG1 gene, five SNPs were selected and analyzed by direct sequencing: rs2162679 (intron), rs2195239 (intron), rs978458 (intron), rs1520220 (intron) and rs6214 (3' untranslated region; 3'UTR). Multiple logistic regression models were conducted to analyze genetic data. SNPStats, SNPAnalyzer Pro and Helixtree programs were used to calculate odds ratios (ORs), 95% confidence intervals (CIs) and p-values. Two SNPs, rs2162679 and rs6214, were associated with the development of IS. After Bonferroni correction (p(c)), the A and G alleles of rs2162679 and rs6214 had significant differences between patients with IS and the controls [rs2162679, OR (95% CI) = 1.64 (1.17-2.31), p=0.004, p(c)=0.02; rs6214, OR (95% CI) = 1.52 (1.12-2.07), p=0.007, p(c)=0.035], respectively. However, the five selected SNPs were not related to the NIHSS and MBI scores. These results suggest that IGF1 may be associated with the development of IS.</P>
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Kang, Jaeku,Lee, Soo Young,Lee, Sun Young,Kim, Young Jin,Park, Jae Yong,Kwon, Sun Jung,Na, Moon Jun,Lee, Eun Jin,Jeon, Hyo Sung,Son, Ji Woong Spandidos Pub.] 2012 Experimental and therapeutic medicine Vol.3 No.1
<P>microRNAs (miRNAs) play a significant role in cancer development and progression by regulating the expression of proto-oncogenes or tumor suppressor genes. Our previous study using microarrays demonstrated that miR-99b was downregulated in patients with lung cancer. To assess whether or not miR-99b has a functional role in lung cancer, we determined the expression of miR-99b and fibroblast growth factor receptor 3 (FGFR3), which is a predicted target of miR-99b in public algorithms in human lung cancer tissues. miR-99b was downregulated and FGFR3 was upregulated in lung cancer patients. We demonstrated that the overexpression of miR-99b induced a reduction in FGFR3 expression and confirmed the target specificity between miR-99b and the FGFR3 3'-untranslated region by luciferase reporter assay. In addition, the growth rate in miR-99b precursor-treated cells was lower compared to the negative controls. Taken together, these results suggest that miR-99b may be a tumor suppressor through the downregulation of FGFR3. miR-99b may be a potent tumor suppressor and may be a potential therapeutic tool for patients with lung cancer.</P>
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