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Minjee Lee,Won Yeong Bang,O-Hyun Ban,Jungwoo Yang 한국당과학회 2022 한국당과학회 학술대회 Vol.2022 No.07
Chronic hypernutrition and lack of physical activity promote lipid accumulation in the white adipose tissue, and excessive lipid accumulation leads to obesity. An increase in the number and size of adipocytes, a characteristic of obesity, is closely associated with adipose dysfunction. Recent in vitro and in vivo studies have proven that probiotics may prevent this dysfunction by regulating lipid metabolism. However, the mechanisms of action of probiotics in obesity are not fully understood, and hence, their usage for treating obesity remains limited. In this study, Bifidobacterium lactis IDCC 4301 was selected for its anti-obesity potential after evaluating inhibitory activity of pancreatic lipase and cholesterol reducing activity. Next, we investigated the roles of B. lactis IDCC 4301 on lipid metabolism in 3T3-L1 cells and high-fat diet (HFD)-fed mice. Our results show that B. lactis IDCC 4301 inhibits cell differentiation and lipid accumulation by suppressing the expression of adipogenic enzymes in 3T3-L1 cells. Moreover, the administration of B. lactis IDCC 4301 resulted in decreased body and epididymal adipose tissue weight, improvement in serum lipid levels, and downregulated adipogenic mRNA expression in HFD-fed mice. Additionally, metabolomic analysis suggested that 2-ketobutyrate might be a possible target compound against obesity. Collectively, these results support that B. lactis IDCC 4301 could be used as an alternative treatment for obesity.
Minjee Lee,hayoung kim,Bae Cheol-Min,Lee Daehwan,Choi Boyoung,Park Hyun Min,Jungwoo Yang 건강기능식품미래포럼 2023 건강기능식품미래포럼 학술지 Vol.3 No.3
Supplementing with low-molecular-weight collagen peptides (LMWCPs) contributes to counteracting signs of aging and improving skin hydration. In this study, a method for producing LMWCPs (Post Collagen®) from raw collagen material was developed as follows: 1) cultivating Lacticaseibacillus rhamnosus IDCC 3201, 2) and collecting the liquid part above the sediment, 3) fermenting the collected liquid (2,500 L) with raw collagen material (1,000 kg) and 4) performing spray-drying. Analysis using gel permeation chromatography confirmed that the raw collagen material had broken down into LMWCPs. Additionally, these fermented collagen peptides (FCP, Post Collagen®) displayed antimicrobial activity against 4 major bacteria responsible for causing gastroenteritis. In terms of their potential benefits, treating normal human dermal fibroblasts with 80 mg/mL of FCP significantly increased the production of type I procollagen and stimulated the up-regulation of the hyaluronan synthase 2 gene. Therefore, these findings support that the supernatant of L. rhamnosus IDCC 3201 culture could offer various health benefits of the collagens from of various sources by providing LMWCPs as multifunctional dietary components.
이민지(Minjee Lee),박미영(Miyoung Park),김주희(Juhee Kim),성소영(Soyoung Sung),이명숙(Myoungsook Lee) 동아시아식생활학회 2018 동아시아식생활학회지 Vol.28 No.5
This research was conducted to determine the impact of high sodium intake on various obesity-related genes. Four week old Sprague-Dawley rats were purchased at Daehan Biolink. After one week of fertilization, the rats were used at 5 weeks of age. Rats were divided into three groups that received sodium orally at 0 mM(CON), 100 mM(Salt-100 mM), or 400 mM(Salt-400 mM). After 3 weeks, rats were sacrificed and used in the experiment. Triglycerides (TG) and total cholesterol (TC) were measured in the blood serum and liver. The activities of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) were analyzed to test the hepatic toxicity. Genes related to lipogenesis and adipogenesis, uncoupling protein1 (UCP1), and tumor necrosis factor-alpha (TNF-α) were expressed in the liver, white adipose tissue (WAT) and brown adipose tissue (BAT). The levels of albumin and creatinine were measured in the urine. The TG and TC levels in blood serum were highest in the Salt-100 mM group, while liver TG and TC were highest in the Salt-400 mM group. Lipogenesis and adipogenesis related genes in the liver did not increase proportionally to salt concentration. In visceral and subcutaneous fat, peroxisome proliferator-activated receptor gamma (PPARγ) and CCAAT/enhancer-binding protein alpha (C/EBPα) were upregulated proportionally with increasing sodium levels. These results suggest that high sodium intake provoked adipogenesis in SD rats. In BAT, the expression of UCP1 was lower in the Salt-400 mM group than the CON group. Additionally, TNF-α in visceral fat and urine albumin and creatinine were higher in salt treated groups than the CON group. Overall, the results indicate that high sodium intake may be associated with obesity and complications.
User Experience Factor Investigation of a Voice User Interface (VUI) for the Elderly
Adriance Wilfred,Minjee Kim,Sungho Kim,Chan Hyeok Yun,NamWoo Cho,Jane Lee,Soo Yeon Kim,Joong Hee Lee,Kyung-Jun Lee,Myung Hwan Yun 한국HCI학회 2021 한국HCI학회 학술대회 Vol.2021 No.1
This paper presents an investigation of UX factor of a voice user interface (VUI) for the elderly, where the voice user interface in this study refers to the artificial intelligence (AI) based technology that interacts with a user via speech commands. In this research, the investigation of UX factors involves the acceptance and affective aspects of the elderly. We applied the Wizard-of-Oz methodology in this experiment, and established our result using Exploratory Factor Analysis (EFA) which determines the significant elements of user experience in voice user interface. Overall, the extracted UX factors can be regard as relevant design parameters for future voice user interface system and researches.