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Chu HN, Kim HR, Jang KA, Hwang YJ, Kim JS. Anti-obesity effects of yuja (Citrus junos Sieb ex Tanaka) pomace extract fermented with lactic acid bacteria on the hepatocytes and epididymal fat tissue of rats. Appl Microsc 2023; 53:7. [PMID: 37553478 PMCID: PMC10409683 DOI: 10.1186/s42649-023-00090-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 07/02/2023] [Indexed: 08/10/2023] Open
Abstract
This study investigated the anti-obesity effects of yuja pomace extract fermented with lactic acid bacteria in rats with high-fat diet-induced obesity over a period of eight weeks. Epididymal fat cell size was significantly smaller, by about 33%, in the treatment groups given yuja pomace extract fermented with lactic acid bacteria compared to the CON group. Electron microscopic observation of hepatocyte microstructure showed that the number of lipid droplets was lower in hepatocytes, the number of mitochondria was higher, along with distinct cristae, and the rough endoplasmic reticula were well developed with stacks of cisternae and ribosomes. Thus, it is believed that yuja pomace extract fermented with lactic acid bacteria, by influencing body weight and lipid accumulation, is effective in the prevention and treatment of obesity.
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Affiliation(s)
- Han-Na Chu
- Department of Agro-Food Resources, National Institute of Agricultural Sciences, Wanju, 55365, Korea
| | - Haeng-Ran Kim
- Department of Agro-Food Resources, National Institute of Agricultural Sciences, Wanju, 55365, Korea
| | - Kyeong-A Jang
- Department of Agro-Food Resources, National Institute of Agricultural Sciences, Wanju, 55365, Korea
| | - Yu-Jin Hwang
- Department of Agro-Food Resources, National Institute of Agricultural Sciences, Wanju, 55365, Korea.
| | - Jeong-Sang Kim
- College of Korean Medicine, Dongshin University, Naju, 58245, Korea.
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Kwak J, Shin D. Association between Green Tea Consumption and Abdominal Obesity Risk in Middle-Aged Korean Population: Findings from the Korean Genome and Epidemiology Study. Int J Environ Res Public Health 2022; 19. [PMID: 35270427 DOI: 10.3390/ijerph19052735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/11/2022] [Accepted: 02/18/2022] [Indexed: 12/10/2022]
Abstract
The prevalence of general and abdominal obesity is increasing with rapid economic growth and the westernization of dietary habits in Korea, especially in the middle-aged population. Data were obtained from the Korean Genome and Epidemiology Study (KoGES), which recruited 10,030 participants between the ages of 40 and 69 years. Information on green tea consumption was obtained from the food frequency questionnaire and categorized as none, <1 cup, between 1 and <4 cups, and ≥4 cups. Multivariable logistic regression models were used to estimate the ORs and 95% CIs to examine any possible associations between green tea consumption and the risk of abdominal obesity after controlling for potential confounders. High consumption of green tea was associated with a 44% lower odds ratio for abdominal obesity (none vs. ≥4 cups/week: OR, 0.56; 95% CI 0.41-0.78; p for trend = 0.001). When stratified by sex, an inverse association between green tea consumption and abdominal obesity was observed only in women (none vs. ≥4 cups/week: OR, 0.71; 95% CI 0.57−0.88; p for trend = 0.004). No significant association was found among men. Our findings indicate that green tea consumption has beneficial effects in the prevention of abdominal obesity in middle-aged Korean women.
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Song JH, Kang HB, Kim JH, Kwak S, Sung GJ, Park SH, Jeong JH, Kim H, Lee J, Jun W, Kim Y, Choi KC. Antiobesity and Cholesterol-Lowering Effects of Dendropanax morbifera Water Extracts in Mouse 3T3-L1 Cells. J Med Food 2018; 21:793-800. [PMID: 30048215 DOI: 10.1089/jmf.2017.4154] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Obesity is the most common metabolic disease in developed countries and has become a global epidemic in recent years. Obesity is associated with various metabolic abnormalities, including glucose intolerance, insulin resistance, type 2 diabetes, dyslipidemia, and hypertension. Leaves from the plant Dendropanax morbiferus are beneficial to health as they contain high levels of vitamin C and tannin. There have been seminal studies on the anticancer, antimicrobial, antidiabetes, and antihyperglycemic effects of treatments with D. morbiferus trees. Herein, we investigated the toxicity of D. morbiferus water (DLW) extracts in vitro, and demonstrated no toxicity at 5-500 μg/mL in 24-72-h experiments with 3T3-L1 cells. The DLW increased cell viability at 48 h and inhibited adipogenesis in 3T3-L1 cells by reducing intracellular triglyceride levels and glucose uptake. In addition, mRNA and protein expression levels of adipogenesis-related genes were lowered by DLW, suggesting antiobesity effects in mouse 3T3-L1 cells. Because few studies have demonstrated cholesterol-lowering effects of D. morbiferus, we investigated the activities of adipogenic transcriptional factors following treatments of 3T3-L1 cells with D. morbiferus and observed increased CEBPα, CEBPβ, PPARγ, and SREBP1 activities in the cells, indicating that DLW extracts inhibit adipogenesis.
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Affiliation(s)
- Ji-Hye Song
- 1 Department of Biomedical Sciences, University of Ulsan College of Medicine , ASAN Medical Center, Seoul, Korea.,2 Department of Pharmacology, University of Ulsan College of Medicine , Seoul, Korea
| | - Hee-Bum Kang
- 1 Department of Biomedical Sciences, University of Ulsan College of Medicine , ASAN Medical Center, Seoul, Korea.,2 Department of Pharmacology, University of Ulsan College of Medicine , Seoul, Korea
| | - Ji Hye Kim
- 1 Department of Biomedical Sciences, University of Ulsan College of Medicine , ASAN Medical Center, Seoul, Korea
| | - Sungmin Kwak
- 1 Department of Biomedical Sciences, University of Ulsan College of Medicine , ASAN Medical Center, Seoul, Korea.,2 Department of Pharmacology, University of Ulsan College of Medicine , Seoul, Korea
| | - Gi-Jun Sung
- 1 Department of Biomedical Sciences, University of Ulsan College of Medicine , ASAN Medical Center, Seoul, Korea.,2 Department of Pharmacology, University of Ulsan College of Medicine , Seoul, Korea
| | - Seung-Ho Park
- 1 Department of Biomedical Sciences, University of Ulsan College of Medicine , ASAN Medical Center, Seoul, Korea.,2 Department of Pharmacology, University of Ulsan College of Medicine , Seoul, Korea
| | - Ji-Hoon Jeong
- 1 Department of Biomedical Sciences, University of Ulsan College of Medicine , ASAN Medical Center, Seoul, Korea.,2 Department of Pharmacology, University of Ulsan College of Medicine , Seoul, Korea
| | - Hyunhee Kim
- 1 Department of Biomedical Sciences, University of Ulsan College of Medicine , ASAN Medical Center, Seoul, Korea.,2 Department of Pharmacology, University of Ulsan College of Medicine , Seoul, Korea
| | - Jeongmin Lee
- 3 Department of Medical Nutrition, Kyung Hee University , Yongin-si, Kyunggi-do, Korea
| | - Woojin Jun
- 4 Division of Food and Nutrition, Chonnam National University , Gwangju, Korea
| | - Yongjae Kim
- 5 HBJbiofarm Research Institute , Cheomdan-ro, Jeju-si, Jeju-do, Korea
| | - Kyung-Chul Choi
- 1 Department of Biomedical Sciences, University of Ulsan College of Medicine , ASAN Medical Center, Seoul, Korea.,2 Department of Pharmacology, University of Ulsan College of Medicine , Seoul, Korea
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