Jo, Hyun Kyun;Han, Min Ho;Hong, Su Hyun;Choi, Yung Hyun;Park, Cheol
Journal of Life Science
/
v.25
no.3
/
pp.285-292
/
2015
Citrus peel (CP) is used as a traditional herb with diverse beneficial pharmacological activities, such as anti-inflammatory, anti-oxidant, and anti-allergic effects. However, the anti-obesity effects of citrus peel are poorly defined. The aim of this study was to evaluate ethanol extracts of citrus peel (EECP) for its adipocyte differentiation and adipogenesis in 3T3-L1 preadipocytes. The aim of this study was to evaluate an EECP for its adipocyte differentiation and adipogenesis in 3T3-L1 preadipocytes. Treatment with EECP significantly suppressed the terminal differentiation of 3T3-L1 preadipocytes in a dose-dependent manner, as confirmed by a decrease in lipid droplet number and lipid content and an accumulation of cellular triglyceride. EECP exhibited potential adipogenesis inhibition and downregulated the expression of pro-adipogenic transcription factors, such as sterol regulatory elementbinding protein-1c (SREBP-1c), peroxisome proliferator-activated receptor-γ (PPARγ), CCAAT/enhancerbinding proteins α (C/EBPα) and C/EBPβ, and adipocyte expressed genes, such as adipocyte fatty acid binding protein (aP2) and Leptin. In addition, EECP treatment effectively activated the AMP-activated protein kinase (AMPK) signaling pathway; however, compound C, a specific inhibitor of AMPK, significantly reduced the EECP-induced inhibition of adipogenesis. Taken together, these results indicate EECP showed strong anti-obesity effects through the AMPK signaling pathway, and further studies will be needed to identify the active compounds that confer the anti-obesity activity of EECP.
Objectives The aim of this study was to investigate the effects of acupuncture on weight loss, food intake, lipid metabolism, adipogenesis. Methods Four week-old C57BL/6J mice acclimatized to the laboratory environment for 1 week were allocated into four groups of 6~8 mice each: normal diet group, high fat diet group, high fat diet group and treated with acupuncture at HT7, high fat diet group and treated with acupuncture at ST36 for 90days. High fat diet group was used to control group. Results 1) Body weight, food intake of the ST36, HT7 groups decreased compared with those of control group. ST36 group was more effective with body weight decrease, and HT7 group was more effective with food intake decrease. 2) NEFA, TG, TC, ALT, AST of the ST36, HT7 groups decreased compared with those of control group. ST36 group was more effective. 3) The expression of SREP-1c, SREBP-2 of the ST36 group decreased compared with those of control group. These decreased rates were statistically significant. SREBP-2 of the HT7 group decreased significantly compared to the control group. 4) LXR, FAS, SCD of the ST36 group decreased significantly compared with control group. 5) p-ACC, HMGCR of the ST36 group decreased significantly compared with those of control group. HMGCR of the HT7 group decreased significantly compared with control group. Conclusions These results suggest that ST36, HT7 acupuncture may be used prevent or treat the obesity induced by high fat diet.
So Hyun Park;Hyeon Hwa Oh;Do Youn Jeong;Young-Soo Kim
Food Science and Preservation
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v.30
no.4
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pp.703-715
/
2023
This study was conducted to investigate the fermentation characteristics and anti-obesity effects of acetic acid fermentation products of coffee wine. The live cell counts, soluble solids, pH and total acidity of the acetic acid unfermented coffee wine (AUFCW; day 0, before fermentation) were 6.35 log CFU/mL, 8.10 °Brix, 3.88, and 1.29%, respectively, while the acetic acid fermented coffee wine (AFCW; day 15, after fermentation) were 4.40 log CFU/mL, 8.57 °Brix, 3.07, and 7.45%, respectively. Pancreatic lipase inhibitory activity tended to increase as the acetic acid fermentation period increased. The anti-obesity effects of AFCW on 3T3-L1 cells, which was induced by MDI, were evaluated based on the lipid accumulation rate, leptin expression, and fat production-related gene expression (PPAR-γ and SREBP-1c) at the mRNA level. In the case of AFCW, the lipid accumulation rate and leptin expression were decreased to 69.37% and 50.20% at a concentration of 200 ㎍/mL, respectively, and the expression levels of PPAR-γ and SREBP-1c at the mRNA level were decreased to 79.89% and 48.81%, respectively. These results indicate that anti-obesity effect of acetic acid fermentation products could be increased by acetic acid fermentation of coffee wine.
Go, Eun Ji;Ryu, Byung Ryeol;Yang, Su Jin;Baek, Jong Suep;Ryu, Su Ji;Kim, Hyun Bok;Lim, Jung Dae
Korean Journal of Medicinal Crop Science
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v.28
no.6
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pp.395-411
/
2020
Background: This study investigated the anti-obesity effect of the flavonoid rich fraction (FRF) and its constituent, rutin obtained from the leaf of Morus alba L., on the lipid accumulation mechanism in 3T3-L1 adipocyte and C57BL/6 mouse models. Methods and Results: In Oil Red O staining, FRF (1,000 ㎍/㎖) treatments showed inhibition rate of 35.39% in lipid accumulation compared to that in the control. AdipoRedTM assay indicated that the triglyceride content in 3T3-L1 adipocytes treated with FRF (1,000 ㎍/㎖) was reduced to 23.22%, and free glycerol content was increased to 106.04% that of the control. FRF and its major constituent, rutin affected mRNA gene expression. Rutin contributed to the inhibition of Sterol regulatory element binding protein-1c (SREBP-1c) gene expression, and inhibited the transcription factors SREBP-1c, peroxisome proliferator-activated receptor gamma (PPAR-γ), CCAAT/enhancer binding protein α (C/EBPα), fatty acid synthase (FAS) and acetyl-CoA carboxylase (ACC). In addition, the effect of FRF administration on obesity development in C57BL/6 mice fed high-fat diet (HFD) was investigated. FRF suppressed weight gain, and reduced liver triglyceride and leptin secretion. FRF exerted potential anti-inflammatory effects by improving insulin resistance and adiponectin levels, and could thus be used to help counteract obesity. The mRNA expressions of PPAR-γ, FAS, ACC, and CPT-1 were determined in liver tissue. Quantitative real-time PCR analysis was also performed to evaluate the expression of IL-1β, IL-6, and TNF-α in epididymal adipose tissue. Compared to the control group, mice fed the HFD showed the up-regulation in PPAR-γ, FAS, IL-6, and TNF-α genes, and down-regulation in CPT1 gene expression. FRF treatement markedly reduced the expression of PPAR-γ, FAS, IL-6, and TNF-α compared to those in HFD control, whereas increased the expression level of CPT1. Conclusions: These results suggest that the FRF and its major active constituent, rutin, can be used as effective anti-obesity agents.
Young Ik Lee;Hui Jin Lee;Su Jin Pyo;Yong Hyun Park;Myng Min Lee;Ho-Yong Sohn;Jin Sook Cho
Journal of Life Science
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v.33
no.12
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pp.967-977
/
2023
Rubus crataegifolius (RC) is a traditional Asian medicinal plant belonging to the Rosaceae family. The fruits of RC are known to prevent adult diseases through antioxidants. In this study, the effects of RC extract (RCex) on obesity and nonalcoholic fatty liver disease (NAFLD) were evaluated in animal models. Twenty-eight male C57BL/6J mice were induced to become obese for 8 weeks and then the extract was orally administered for 8 weeks. RCex reduced body weight, adipose tissue, liver weight. RCex improved biochemical biomarkers including lipid metabolism (alanine aminotransferase (ALT), aspartate aminotransferase (AST), plasma triglyceride (TG), total cholesterol (TC), high-density lipoprotein (HDL) cholesterol and low-density lipoprotein (LDL) cholesterol). The activation of AMP-activated protein kinase (AMPK) reduced the expression of adipogenesis genes (liver × receptor (LXR), sterol regulatory element-binding protein-1c (SREBP-1c), fatty acid synthesis (FAS), acetyl-CoA carboxylase 1 (ACC1) and the effect of enhancing carnitine palmitoyltransferase (CPT) activity by RCex was verified. RCex also influence on plasma production of hormones (adiponectin & leptin) related on energy expenditure and metabolism. In addition, we confirmed that RCex improved glucose intolerance in HFD-induced obese rats. RCex was first demonstrated to have anti-obesity as well as anti-NAFLD effects by regulating fatty acid oxidation and fatty acid synthesis by phosphorylation of AMPK. This suggests that RCex could be a good supplement for the prevention of obesity and related NAFLD.
Park, Sung-Jin;Choi, Jun-Hyeok;Jung, Yeon-Seop;Yu, Mi Hee
Korean Journal of Food Science and Technology
/
v.45
no.1
/
pp.90-96
/
2013
The anti-obesity effect of ethanol xtract and their fractions from Rumex Crispus L. on the differentiation of 3T3-L1 pre-adipocytes to adipocytes was investigated by suppressing adipocyte differentiation and lipid accumulation with Oil red O assay, western blot and real-time PCR analysis. Ethyl acetate fraction of Rumex crispus L. significantly inhibited adipocyte differentiation when treated during the adipocyte differentiation process, as assessed by measuring fat accumulation using Oil red O staining. In inducing differentiation of 3T3-L1 preadipocytes in the presence of an adipogenic cocktail, isobutylmethylxanthine (IBMX), dexamethasone- and insulin-along with ethyl acetate fraction residue processing treatment significantly decreased protein expression of obesity-related proteins, such as peroxisome-proliferators-activated-receptor-${\gamma}$ ($PPAR{\gamma}$) and CCAAT enhancer-binding-proteins ${\alpha}$ ($C/EBP{\alpha}$). These results indicate that ethyl acetate fraction of Rumex crispus L. is the most effective candidate for preventing obesity. However further studies will be needed to identify the active compounds that confer the anti-obesity activity of ethyl acetate fraction from Rumex crispus L.
Kim, Hwa-Jin;You, Mi-Kyoung;Lee, Young-Hyun;Kim, Hyun-Jung;Adhikari, Deepak;Kim, Hyeon-A
Nutrition Research and Practice
/
v.12
no.6
/
pp.494-502
/
2018
BACKGROUND/OBJECTIVES: Reducing the number of adipocytes by inducing apoptosis of mature adipocytes as well as suppressing differentiation of preadipocytes plays an important role in preventing obesity. This study examines the anti-adipogenic and pro-apoptotic effect of red pepper seed water extract (RPS) prepared at $4^{\circ}C$ (RPS4) in 3T3-L1 cells. MATERIALS/METHODS: Effect of RPS4 or its fractions on lipid accumulation was determined in 3T3-L1 cells using oil red O (ORO) staining. The expressions of AMP-activated protein kinase (AMPK) and adipogenic associated proteins [peroxisome proliferator-activated receptor-${\gamma}$ ($PPAR-{\gamma}$), CCAAT/enhancer-binding proteins ${\alpha}$ (C/EBP ${\alpha}$), sterol regulatory element binding protein-1c (SREBP-1c), fatty acid synthase (FAS), and acetyl-CoA carboxylase (ACC)] were measured in 3T3-L1 cells treated with RPS4. Apoptosis and the expression of Akt and Bcl-2 family proteins [B-cell lymphoma 2 (Bcl-2), Bcl-2-associated death promoter (Bad), Bcl-2 like protein 4 (Bax), Bal-2 homologous antagonist/killer (Bak)] were measured in mature 3T3-L1 cells treated with RPS4. RESULTS: Treatment of RPS4 ($0-75{\mu}g/mL$) or its fractions ($0-50{\mu}g/mL$) for 24 h did not have an apparent cytotoxicity on pre and mature 3T3-L1 cells. RPS4 significantly suppressed differentiation and cellular lipid accumulation by increasing the phosphorylation of AMPK and reducing the expression of $PPAR-{\gamma}$, C/EBP ${\alpha}$, SREBP-1c, FAS, and ACC. In addition, all fractions except ethyl acetate fraction significantly suppressed cellular lipid accumulation. RPS4 induced the apoptosis of mature adipocytes by hypophosphorylating Akt, increasing the expression of the pro-apoptotic proteins, Bak, Bax, and Bad, and reducing the expression of the anti-apoptotic proteins, Bcl-2 and p-Bad. CONCLUSIONS: These finding suggest that RPS4 can reduce the numbers as well as the size of adipocytes and might useful for preventing and treating obesity.
Hsiao, Mei Hui;Ko, Seong-Gyu;Jun, Chan-Yong;Park, Jong-Hyeong;Choi, You-Kyung
Journal of Physiology & Pathology in Korean Medicine
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v.24
no.4
/
pp.638-645
/
2010
The aim of this study was to investigate the effect of Taeeumjowuitanggagam-bang (TJV) on the mRNA expression of Sterol regulatory element binding proteins (SREBPs), Tumor necrosis factor-$\alpha$ (TNF-$\alpha$) and Interlukin-6 (IL-6) that are considered to play an important role in lipid and glucose metabolism. For diet-induced obese studies, we split mice into 2 groups. The low fat diet group (LFD, n=8) were supplied with general diet for 10 weeks and the high fat diet group (HFD, n=18) were supplied with 60 kcal% fat diet for 10 weeks. And then The HFD group, the diet-induced obese group, were divided into 3 groups ; a group supplied with normal saline, a group treated with TJV 200 mg/kg and a group treated with TJV 500 mg/kg. They were treated orally with TJV and measured their body weight every day during 10 weeks. After that, we measured mRNA expressions of TNF-$\alpha$, IL-6 and SREBP-1c in liver, and blood concentrations of glucose, total cholesterol and triglyceride too. The results are as follows. The TJV reduced glucose and total cholesterol of blood concentration. The TJV reduced the mRNA expressions of TNF-$\alpha$ and SREBPs in liver. However, We couldn't find the TJV effects on the mRNA expression of IL-6, triglyceride blood concentration, and body weight among groups. The TJV stained liver tissue less red than control group. These results suggest that TJV may be effective for regulation of lipid and glucose metabolism in liver.
Journal of the Korea Society of Computer and Information
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v.29
no.1
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pp.187-194
/
2024
In this study, we examined the effects of Rubus crataegifolius leaf on the inhibition of differentiation and adipogenesis of 3T3-L1 preadipocytes to confirm their potential for use as an anti-obesity functional material. Rubus crataegifolius leaves water extracted using hot water were then concentrated for use, with an extract yield of 4.76%. The result of measuring the rate of 3T3-L1 cell survival of Rubus crataegifolius leaf extract (RCLE) showed growth inhibition of 13% at a concentration of 1,000 ㎍/mL. Thus, in this study, experiments were performed using RCLE treatment concentrations up to 500 ㎍/mL. Production of triglycedie in 3T3-L1 cells showed a dose-dependent decrease, and the rate of reduction was 28.7, 40.8, and 51.6% at concentrations of 100, 300, and 500 ㎍/mL, respectively, compared to the control group. In addition, the results confirmed that suppression of lipogenesis was achieved by suppressing the expression of peroxisome proliferator-activated receptor γ (PPAR γ), CCAAT/enhancer-binding protein α (C/EBP α), sterol regulatory element-binding protein-1c (SREBP-1c), fatty acid synthase (FAS), acetyl-CoA carboxylase (ACC), and increasing the expression of p-activated protein kinase (p-AMPK). Based on these results, it is believed that Rubus crataegifolius leaf extract can be used in the effort to manage obesity by regulating factors related to adipocyte differentiation and adipogenesis.
The present study focused on the potential mechanism of betulin (BT), a pentacyclic triterpenoid isolated from the bark of white birch (Betula pubescens), against chronic alcohol-induced lipid accumulation and metaflammation. AML-12 and RAW 264.7 cells were administered ethanol (EtOH), lipopolysaccharide (LPS) or BT. Male C57BL/6 mice were fed Lieber-DeCarli liquid diets containing 5% EtOH for 4 weeks, followed by single EtOH gavage on the last day and simultaneous treatment with BT (20 or 50 mg/kg) by oral gavage once per day. In vitro, MTT showed that 0-25 mM EtOH and 0-25 µM BT had no toxic effect on AML-12 cells. BT could regulate sterolregulatory-element-binding protein 1 (SREBP1), lipin1/2, P2X7 receptor (P2X7r) and NOD-like receptor family, pyrin domains-containing protein 3 (NLRP3) expressions again EtOH-stimulation. Oil Red O staining also indicated that BT significantly reduced lipid accumulation in EtOH-stimulated AML-12 cells. Lipin1/2 deficiency indicated that BT might mediate lipin1/2 to regulate SREBP1 and P2X7r expression and further alleviate lipid accumulation and inflammation. In vivo, BT significantly alleviated histopathological changes, reduced serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) and triglyceride (TG) levels, and regulated lipin1/2, SREBP1, peroxisome proliferator activated receptor α/γ (PPARα/γ) and PGC-1α expression compared with the EtOH group. BT reduced the secretion of inflammatory factors and blocked the P2X7r-NLRP3 signaling pathway. Collectively, BT attenuated lipid accumulation and metaflammation by regulating the lipin1/2-mediated P2X7r signaling pathway.
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