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RISS 인기검색어
- 검색키워드
- 저자 : Sunmin Park (검색결과 225 건)
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Sunmin Park,Won Park,Shin-Hyung Park,Joo Young Kim,Jin Hee Kim,Haeyoung Kim,Yeon-Sil Kim,Won Kyung Cho,Won Sup Yoon,Dae Sik Yang 대한부인종양학회 2022 Journal of Gynecologic Oncology Vol.33 No.3
Objective: This study aimed to evaluate the oncologic outcomes according to disease burden in uterine cervical cancer patients with metachronous distant metastases. Methods: Between 2005 and 2015, 163 patients with metachronous distant metastases from uterine cervical cancer after receiving a definitive therapy were evaluated at seven institutions in Korea. Low metastatic burden was defined as less than 5 metastatic sites, whereas high metastatic burden was others. Each metastasis site was divided based on the lymph node (LN) and organs affected. The overall survival (OS) and progression-free survival (PFS) were assessed. Cox proportional hazards models, including other clinical variables, were used to evaluate the survival outcomes. Results: The median follow-up duration was 22.2 months (range: 0.3–174.8 months). Para- aortic LNs (56.4%), lungs (26.4%), supraclavicular LNs (18.4%), and peritoneum (13.5%) were found to be the common metastasis sites. Among 37 patients with a single metastasis, 17 (45.9%) had LN metastases and 20 (54.1%) had organ metastases. The 1- and 2-year OS rates were 73.9% and 55.0%, respectively, whereas the PFS rates were 67.2% and 42.9%, respectively. SCC Ag after recurrence and high metastatic burden were significant factors affecting the OS (p=0.004 and p<0.001, respectively). Distant organ recurrence, short disease-free interval (≤2 years), and high metastatic burden were unfavorable factors for PFS (p=0.003, p=0.011, and p=0.002, respectively). Conclusion: A favorable oncologic outcome can be expected by performing salvage treatments in selected patients with a long disease-free interval, low metastatic burden, and/ or lymphatic-only metastasis.
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Park, Soo-Bong,Park, Mi-Kyung,Park, Chun-Hee,Jun, Dong-Wha,Lee, Won-Kuk,Park, Sunmin The Korean Nutrition Society 2003 Nutritional Sciences Vol.6 No.4
In recent years, the prevalence of type 2 diabetes mellitus has dramatically increased in Korea as the diet has rapidly become westernized. We determined the effect of long-term cola intakes on glucose metabolism and oxidative stress in weanling male Sprague Dawley rats consuming a moderate fat diet Thirty male rats, born from 6 female rats, were randomized into cola or water drinking groups. For 28 weeks, all rats were provided with an ad lib solid diet having 33 percent of its metabolisable energy as fat In addition, rats of the cola group were provided with ad lib cola instead of water. The daily total caloric intake did not differ between groups. The rats in the cola group consumed a higher proportion of carbohydrates, and their mean body weight and fasting serum insulin level were lower than that of the control group. Whole-body glucose disposal rates measured by an euglycemic hyperinsulinemic clamp were higher in the cola group. However, lipid peroxide levels in kidney tissue were higher in the cola group than in the control group. Superoxide dismutase activity in kidney tissues was lower in the cola group compared to the control group, while glutathion peroxidase and catalase activities were not significantly different between the two groups. In conclusion, long-term cola intakes decreased insulin resistance, but increased oxidative stress in kidney tissue due to decreased SOD activities, which may lead to kidney damage. Thus, moderate changes in insulin resistance may not affect the status of oxidative stress, and vice versa.
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Promotion of Insulin Sensitivity with Chungkookjang Intake through Gut Microbiota-Liver-Brain Axis
Sunmin Park 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Chungkookajng fermented with different Bacillus spp. has different efficacies for metabolic functions. It has been reported to have anti-oxidant and anti-inflammatory activities and improves glucose metabolism by potentiating insulin sensitivity and improving β-cell function and mass. Furthermore, amyloid-beta (Aβ) accumulation is increased by brain insulin resistance. The impairment of insulin/IGF-1 signaling mainly in the hippocampus and brain insulin resistance is connected to signals originating in the liver and gut microbiota, known as the gut microbiota-liver-brain axis. It indicates that the changes in the production of short-chain fatty acids by the gut microbiota and proinflammatory cytokines can alter insulin resistance in the liver and brain. Isoflavonoids such as genistein and daidzein are detected in the brain tissues after passing through the blood-brain barrier, where it can directly influence neuroinflammation and brain insulin resistance and modulate Aβ deposition. Chungkookjang intake reduces harmful bacteria and elevates beneficial bacteria to decrease proinflammatory cytokines and LPS in the gut, and it promotes gut microbiome-liver axis to decrease hepatic insulin resistance. Chunkookjang can modulate systemic and brain insulin resistance to directly suppress type 2 diabetes and Alzheimer’s disease, and it influences Aβ deposition by activating the gut microbiota-liver-brain axis. Chungkookjang intake can enhance brain insulin sensitivity and neuroinflammation, directly and indirectly, to protect against the development of Alzheimer’s disease, and the gut microbiota-liver-brain axis is mainly involved in the indirect pathway. Further human studies need to confirm the chungkookjang activities in improving type 2 diabetes and Alzheimer’s disease.
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Chemical Doping of Graphene by Altretamine(2,4,6-Tris [dimethylamino]-1,3,5-Triazine)
Sunmin Park,Heeseon Lim,양세나,Hangil Lee 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.7
The electronic properties of altretamine(2,4,6-tris [dimethylamino]-1,3,5-triazine) adsorbed on epitaxial graphene (EG) were investigated by core-level photoemission spectroscopy (CLPES) in conjunction with low energy electron diffraction (LEED). We found that altretamine molecule adsorbed onto interface layer (S1) of graphene as we confirm decrement of S1 peak using CLPES and haziness of LEED pattern. Moreover, the measured work function changes verified that increased adsorption of the altretamine on graphene layer showed n-type doping characteristics due to charge transfer from altretamine to graphene through the nitrogens. Two distinct nitrogen bonding feature associated with the N 1s peak was clearly observed in the core-level spectra indicating two different chemical environments
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Park, Sunmin,Yoo, Kyung Min,Hyun, Joo Suk,Kang, Suna Elsevier 2017 The Journal of nutritional biochemistry Vol.40 No.-
<P>Intermittent fasting (IMF) is a relatively new dietary approach to weight management, although the efficacy and adverse effects have not been full elucidated and the optimal diets for IMF are unknown. We tested the hypothesis that a one-meal-per-day intermittent fasting with high fat (HF) or protein (HP) diets can modify energy, lipid, and glucose metabolism in normal young male Sprague-Dawley rats with diet-induced obesity or overweight Male rats aged 5 weeks received either HF (40% fat) or HP (26% protein) diets ad libitum (AL) or for 3 hat the beginning of the dark cycle (IMF) for 5 weeks. Epidydimal fat pads and fat deposits in the leg and abdomen were lower with HP and IMF. Energy expenditure at the beginning of the dark cycle, especially from fat oxidation, was higher with IMF than AL, possibly due to greater activity levels. Brown fat content was higher with IMF. Serum ghrelin levels were higher in HP-IMF than other groups, and accordingly, cumulative food intake was also higher in HP-IMF than HF-IMF. HF-IMF exhibited higher area under the curve (AUC) of serum glucose at the first part (0-40 min) during oral glucose tolerance test, whereas AUC of serum insulin levels in both parts were higher in IMF and HF. During intraperitoneal insulin tolerance test, serum glucose levels were higher with IMF than AL Consistently, hepatic insulin signaling (GLUT2, pAkt) was attenuated and PEPCK expression was higher with IMF and HF than other groups, and HOMA-IR revealed significantly impaired attenuated insulin sensitivity in the IMF groups. However, surprisingly, hepatic and skeletal muscle glycogen storage was higher in IMF groups than AL The higher glycogen storage in the IMF groups was associated with the lower expression of glycogen phosphorylase than the AL groups. In conclusion, IMF especially with HF increased insulin resistance, possibly by attenuating hepatic insulin signaling, and lowered glycogen phosphorylase expression despite decreased fat mass in young male rats. These results suggest that caution may be warranted when recommending intermittent fasting, especially one-meal-per-day fasting, for people with compromised glucose metabolism. (C) 2016 Elsevier Inc. All rights reserved.</P>
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Park, Sunmin,Kim, Da Sol,Kang, Suna,Kim, Hyun Jin Elsevier 2018 Nutrition research Vol.60 No.-
<P><B>Abstract</B></P> <P>Luteolin and <SMALL>L</SMALL>-theanine have anti-inflammatory, antioxidant, and possible antidiabetic activities, and they may synergistically protect against dementia. Here, we hypothesized that a combination of luteolin and <SMALL>L</SMALL>-theanine would synergistically act to improve memory function and glucose disturbances in rats infused with amyloid-<I>β</I>, and the mechanisms underlying these actions were investigated. Rats that received an amyloid-<I>β</I>(25-35) infusion into the CA1 region of the hippocampus were fed dextrin (AD-CON), 0.1% luteolin (AD-Lut), 0.2% <SMALL>L</SMALL>-theanine (AD-Thea), or both 0.05% luteolin and 0.1% <SMALL>L</SMALL>-theanine (AD-LuTh) in conjunction with a high-fat diet over 8 weeks. AD-LuTh improved memory function, as determined by water maze and passive avoidance tests, by potentiating the hippocampal insulin signaling and reducing inflammation: Luteolin mainly potentiated insulin signaling via the pAkt➔pGSK➔pTau pathway, and <SMALL>L</SMALL>-theanine primarily reduced tumor necrosis factor-<I>α</I>. In the metabolomics analysis of the hippocampus lysates, the concentration of proline, phenylpyruvic acid, and normetanephrine decreased in the AD-LuTh compared to AD-CON. Norepinephrine contents were lower in the AD-CON than non-AD rats with a high fat diet with 0.2% dextrin, whereas AD-Thea and AD-LuTh inhibited the decrease. Both the AD-Lut and AD-LuTh increased glucose infusion rates and decreased hepatic glucose output under basal and hyperinsulinemic conditions, indicating improved whole-body and hepatic insulin sensitivity. Disturbances in glucose-stimulated insulin secretion during hyperglycemic clamp were most effectively corrected by the AD-Lut and AD-LuTh treatments. In conclusion, the hypothesis of the study was accepted. The combination of luteolin and <SMALL>L</SMALL>-theanine prevented Alzheimer disease–like symptom, possibly by improving hippocampal insulin signaling, norepinephrine metabolisms, and decreasing neuroinflammation. The combination of luteolin and <SMALL>L</SMALL>-theanine may be a useful therapeutic option for preventing and/or delaying the progression of memory dysfunction.</P>
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Park, Sunmin,Kim, Da S,Wu, Xuangao,J Yi, Qiu SAGE Publications 2018 Experimental biology and medicine Vol.243 No.11
<P> Chronic alcohol intake causes hepatic steatosis and changes the body composition and glucose metabolism. We examined whether water extracts of mulberry (WMB) and white flower dandelion ( Taraxacum coreanum Nakai, WTC) can prevent and/or delay the symptoms of chronic ethanol-induced hepatic steatosis in male Sprague Dawley rats, and explored the mechanisms. Ethanol degradation was examined by orally administering 3 g ethanol/kg bw after giving them 0.3 g/kg bw WMB or WTC. All rats were continuously provided about 7 g ethanol/kg bw/day for four weeks and were given either of 0.1% dextrin (control), WMB, WTC, or water extracts of Hovenia dulcis Thunb fruit (positive-control) in high-fat diets. Area under the curve of serum ethanol levels was lowered in descending order of control, WTC and positive-control, and WMB in acute ethanol challenge. WMB and WTC prevented alcohol intake-related decrease in bone mineral density and lean body mass compared to the control. After glucose challenge, serum glucose levels increased more in the control group than other groups in the first part and the rate of decrease after 40 min was similar among all groups. These changes were associated with decreasing serum insulin levels. WMB had the greatest efficacy for decreasing triglyceride and increasing glycogen deposits. WMB and WTC prevented the disruption of the hepatic cells and nuclei while reducing malondialdehyde contents in rats fed alcohol, but the prevention was not as much as the normal-control. The ratio of Firmicutes to Bacteroidetes in the gut was much higher in the control than the normal-control, but WTC and WMB decreased the ratio compared to the control. WMB and WTC separated the gut microbiota community from the control. In conclusion, WMB and WTC protected against alcoholic liver steatosis by accelerating ethanol degradation and also improved body composition and glucose metabolism while alleviating the dysbiosis of gut microbiome by chronic alcohol intake. </P><B>Impact statement</B><P> Excessive alcohol consumption is associated with serious pathologies and is common in much of the world. Pathologies include liver damage, glucose intolerance, and loss of lean body mass and bone mass. These pathologies are mediated by changes in metabolism as well as toxic metabolic byproducts, and possibly by gut dysbiosis. In this study, we demonstrate that aqueous extracts of mulberry and dandelion protected rats against ethanol-induced losses in lean body and bone masses, improved glucose tolerance and partially normalized gut bacterial populations, with mulberry extract being generally more effective. This research suggests that mulberry and dandelion extracts may have the potential to improve some of the pathologies associated with excess alcohol consumption, and that further clinical research is warranted. </P>
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