• Nutritional Sciences
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• 제5권3호
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• pp.129-133
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• 2002

Obesity is a major public health problem in western countries. Genetic and environmental factors, separately or in combination are major determinants of fat mass. Both central effectors (primarily hypothalamus) and peripheral tissues (such as adipose tissue) are implicated in the pathogenesis of obesity. A significant number of studies have documented potential contribution of adipose tissue -via its newly discovered secretory function- to the pathogenesis of obesity and co-morbid conditions including cardiovascular disease, diabetes and hypertension. Applications of analytical techniques such as genomics and proteomics have enabled better understanding of biological sciences in general and have only being applied recently to nutritional sciences including obesity research. Here, we review the recent progress in adipose tissue functional genomics and proteomics, and the importance of these studies in energy metabolism and obesity research.

• Journal of Chest Surgery
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• 제25권3호
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• pp.325-329
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• 1992

The thymolipoma is rather rare benign tumor of the thymus. One case of huge thymolipoma, seen in a 11-year-old boy, is presented. It is about 2.16kg. He had some chest discomfort. The chest film showed homogeneous haziness fills the left hemithorax, On chest CT scan, multiple small amorphous soft tissue densities were recognized as islands within a large fatty mass. Tumor resection was performed through left anterolateral thoracotomy. The mass was yellowish soft, measured 29x19Xllcm, 12X7.5x3.5cm, 7.0X3.0X1.0cm. Microscopically, the tumor was comprised of abundant mature adipose tissue and normal thymic tissue.

• 대한방사선기술학회지:방사선기술과학
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• 제40권2호
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• pp.219-228
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• 2017

폐경 후 여성에서 골다공증과 비만은 삶의 질적인 면에서 많은 영향을 미친다. 폐경 후 여성은 호르몬의 변화로 골다공증과 비만의 위험이 높아진다. 골다공증과 체중과의 관련성이 알려져 있고 특히 체지방량과의 관련성이 논의되고 있다. 본 연구에서는 폐경 후 여성에서 골밀도 수치에 따라 체지방 중 심장외막지방과 복부피하지방과 비교하여 골밀도 수치 변화가 지방조직과 관련이 있는지 알아보고자 하였다. 내과 및 검진센터를 방문한 폐경 후 여성 중 골밀도검사와 심장초음파를 실시한 160명이 연구대상이었다. 심장외막지방두께는 세 단면의 측정값을 평균하였으며, 골밀도 수치는 L-spine과 대퇴골 경부의 T값을 사용하여 분석하였다. 및 골밀도검사는 진단기준에 맞게 측정하여 연구결과 나이가 증가할수록 골다공증의 위험이 높아지고 체중은 감소할수록 골다공증의 위험이 높아지는 것으로 나타났다(p<0.05). 폐경 후 여성에서 지방조직과 골밀도 수치변화의 연관성을 보기 위한 연구결과에서는 심장외막지방두께의 증가는 골밀도 수치에 음의 상관관계를 보였고(p<0.05), 복부피하지방두께의 증가는 골밀도 수치에 양의 상관관계가 있는 것으로 분석되었다(p<0.05). 즉 지방조직의 침착위치에 따라 골밀도 수치가 미치는 영향이 서로 다른 것으로 나타났다. 폐경기 여성에서 심장외막지방조직의 두께 변화를 정기적으로 검사한다면 골다공증을 미리 예방할 수 있을 것으로 생각된다.

• Mass Spectrometry Letters
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• 제5권1호
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• pp.16-23
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• 2014

Liquid chromatography based mass spectrometry (LC-MS) is a key technology for analyzing highly complex and dynamic proteome samples. With highly accurate and sensitive LC-MS analysis of complex proteome samples, efficient data processing is another critical issue to obtain more information from LC-MS data. A typical proteomic data processing starts with protein database search engine which assigns peptide sequences to MS/MS spectra and finds proteins. Although several search engines, such as SEQUEST and MASCOT, have been widely used, there is no unique standard way to interpret MS/MS spectra of peptides. Each search engine has pros and cons depending on types of mass spectrometers and physicochemical properties of peptides. In this study, we describe a novel data process pipeline which identifies more peptides and proteins by correcting precursor ion mass numbers and unifying multi search engines results. The pipeline utilizes two open-source software, iPE-MMR for mass number correction, and iProphet to combine several search results. The integrated pipeline identified 25% more proteins in mouse epididymal adipose tissue compared with the conventional method. Also the pipeline was validated using control and colitis induced colon tissue. The results of the present study shows that the integrated pipeline can efficiently identify increased number of proteins compared to the conventional method which can be a breakthrough in identification of a potential biomarker candidate.

• 한국응용과학기술학회지
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• 제34권3호
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• pp.427-435
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• 2017

제니스테인(genistein)이 폐경으로 유도된 비만을 조절하는지를 알아보기 위해 폐경기 여성의 동물모델인 난소절제 암컷 쥐에서 항비만 효과에 대한 제니스테인의 영향을 연구하였다. 7주령의 C57BL/6J 암컷쥐를 무작위로 3그룹으로 나누어 8주 동안 고지방식 사료 또는 제니스테인이 첨가된 고지방식 사료를 섭취시킨 후 비만의 결정요소들을 측정하였다. 난소절제 쥐는 난소가 절제되지 않은 쥐에 비해 몸무게와 지방조직무게가 증가되었다. 그러나 제니스테인의 처리는 난소절제 쥐의 몸무게, 지방조직무게 및 지방세포 크기를 감소시켰다. 난소절제 쥐에 비해 제니스테인이 처리된 난소절제 쥐는 혈청 속의 중성지방과 총 콜레스테롤이 유의적으로 낮아졌다. 또한 난소절제 쥐에서 간조직의 지질성분 축적도 제니스테인에 의해 감소되었다. 이러한 결과는 제니스테인이 난소절제로 유도된 지방과다, 지방세포비대 및 지질이상을 효과적으로 개선시킬 수 있다는 것을 시사하고 있다. 따라서 본 연구는 폐경기 여성의 비만과 고지혈증을 포함한 신진대사 장애의 개선에 공헌할 것이다.

• 대한의생명과학회지
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• 제16권3호
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• pp.151-159
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• 2010

The peroxisome proliferator-activated receptor $\alpha$ (PPAR$\alpha$) is a nuclear transcription factor that plays a central role in lipid metabolism and obesity. Exercise also is a powerful modifier of the manifestations of the lipid metabolism and obesity in animal models and humans with obesity and metabolic syndrome. However, effects of exercise on lipid metabolism and obesity in normal-weight younger female subjects, having functional ovaries and not metabolic disease, remain unexplained. To explore the effects of exercise on the development of obesity and its molecular mechanism in high fat diet-fed female C57BL/6J mice, we experimented the effects of swim training on body weight, adipose tissue mass, serum lipid levels, morphological changes of adipocytes and the expression of PPAR$\alpha$ target genes involved in fat oxidation in skeletal muscle tissue of female C57BL/6J mice. Swim-trained mice had significantly decreased body weight, adipose tissue mass, serum triglycerides compared with female control mice. Histological studies showed that swim training significantly decreased the average size of adipoctyes in parametrial adipose tissue. Swim training did not affect the expression of PPAR$\alpha$ mRNA in skeletal muscle. Concomitantly, swim training did not increase mRNA levels of PPAR$\alpha$ target genes responsible for fatty acid $\beta$-oxidation, such as carnitine palmitoyltransferase 1, medium chain acyl-CoA dehydrogenase, enoyl-CoA hydratase/3-hydroxyacyl-CoA dehydrogenase, and thiolase in skeletal muscle. In conclusion, these results indicate that swim training regulates lipid metabolism and obesity in high fat diet fed-female mice although swim training did not increase mRNA levels of PPAR$\alpha$ target genes involved in fatty acid $\beta$-oxidation in skeletal muscle, suggesting that swim training may prevent obesity and improve fitness through other mechanisms in female with ovaries, not through the activation of skeletal muscle PPAR$\alpha$.

• 한방비만학회지
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• 제5권1호
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• pp.133-140
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• 2005

The prevalence of obesity at all ages in increasing epidemically worldwide. There were many study of an indirect method on fat mass measurement in obesity, but were few study to determine the possible relationships between local fat deposition and health-related fitness parameters in overweight and obesity. We has reviewed on the somatotype characteristics, ideal posture and biomechanics, and adipose tissue of connective tissue, myofacia continuity. We consider that these unique 'whole systems' view is of vital importance to understanding the role of adipose tissue in musculoskeletal system and to application of body shape correction program.

• Nutrition Research and Practice
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• 제18권1호
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• pp.78-87
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• 2024

BACKGROUND/OBJECTIVES: The prevalence of obesity, a worldwide pandemic, has been increasing steadily in Korea. Reports have shown that increased intermuscular adipose tissue (IMAT) is associated with an increased risk of cardiovascular disease, independent of body mass index. However, the relationship between dietary intake and IMAT accumulation in the Korean population remains undetermined. The objective of this study was to evaluate regional fat compartments using advanced magnetic resonance imaging (MRI) techniques. We also aimed to investigate the association between IMAT amounts and dietary intake, including carbohydrate intake, among Korean individuals with obesity. SUBJECTS/METHODS: This cross-sectional study, performed at a medical center in South Korea, recruited 35 individuals with obesity (15 men and 20 women) and classified them into 2 groups according to sex. Anthropometry was performed, and body fat distribution was measured using MRI. Blood parameters, including glucose and lipid profiles, were analyzed using commercial kits. Linear regression analysis was used to test whether the IMAT was associated with daily carbohydrate intake. RESULTS: Carbohydrate intake was positively associated with IMAT in all individuals, with adjustments for age, sex, height, and weight. No significant differences in blood indicators were found between the sexes. CONCLUSIONS: Regardless of sex and age, higher carbohydrate intake was strongly correlated with greater IMAT accumulation. This suggests the need to better understand sex differences and high carbohydrate diet patterns in relation to the association between obesity and metabolic risk, which may help reduce obesity prevalence.

• Mass Spectrometry Letters
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• 제3권2호
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• pp.39-42
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• 2012

Phosphorylation and glycosylation are two of the most important and widespread post-translational modifications (PTMs) in an organism. Proteomics analysis of the PTMs has been challenged by low stoichiometry of the modified proteins and suppression effects by high abundance proteins, typically no-functional house-keeping proteins. In this study, a novel method was applied for not only isolating PTM peptides from intact peptides but also concurrently characterizing of glyco- and phosphoproteome using electrostatic repulsion hydrophilic interaction chromatography (ERLIC) packed with silica coated by crosslinked polyethyleneimine. For 2 mg tryptic digest of mouse proteome of epicardial adipose tissue with fat diet, 802 N-glycosylated peptides of 316 glycoproteins and 159 phosphorylated peptides of 75 phosphoproteins were identified using HPLC chip/quadrupole time-of-flight (Q-OF) tandem mass spectrometer.

• Journal of mucopolysaccharidosis and rare diseases
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• 제1권2호
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• pp.44-48
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• 2015

Body fat distribution in patients with Prader-Willi syndrome (PWS) is characterized by reduce lean body mass (LBM), increased total body fat mass (FM), and lower percentage of visceral adipose tissue (VAT). Individuals with PWS seem to have a lower risk for insulin resistance with high levels of adiponectin, an anti-atherogenic adipocytokine that is decreased in visceral fat hypertrophy subjects compared to simple obese subjects, both in children and in adults. The mechanism of the reduction in visceral adiposity in PWS is still unclear. It might be related to qualitative intrinsic characteristics of adipocyte or novel genetic influences on the control of fat distribution. However, obesity remains a critical problem, and obesity status plays a crucial role in individual metabolic risk clustering and development of metabolic syndrome (Mets) in PWS children and adults. Long-term growth hormone (GH) treatment after cessation of skeletal growth improved body composition, with an increase in lean body mass and a reduction in total body fat and subcutaneous and visceral fat in PWS adults. Thus, the role of GH is important after childhood because it might attenuate obesity and Mets in PWS adult by adipocyte modification.