• Asian-Australasian Journal of Animal Sciences
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• 제18권1호
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• pp.13-16
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• 2005

This study was performed to detect genetic variation of the heart fatty acid-binding protein (H-FABP) gene by PCRRFLPs approach and its association with intramuscular fat (IMF) content. Data from 223 individuals, including one Chinese native pig breed and four western pig breeds, were analyzed. The results showed that for the H-FABP gene, there was one polymorphic HinfI site in the 5'-upstream region, whereas there were one HaeIII and one HinfI (marked as $HinfI^*$) polymorphic site in the second intron, respectively. The three PCR-RFLPs were present in all breeds tested. The allele frequencies, however, revealed significant differences between them (p<0.05). Furthermore, the allele frequency distribution of HinfI in the Laiwu Black and that of $HinfI^*$ in the Hampshire breed were at disequilibrium, which might be the result of selective breeding. Results also indicated that for HinfI, HaeIII and $HinfI^*$ HFABP RFLP, significant (p<0.05) contrasts of 0.78%, -0.69% and 0.72% were detected in the least square means of IMF content between the homozygous genotype HH and hh, DD and dd, BB and bb classes, respectively. It implied that the HHddBB genotype had the highest IMF content in this experimental population and these H-FABP RFLPs could serve, to some extent, as genetic markers for use in improvement of IMF content.

• Parasites, Hosts and Diseases
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• 제50권1호
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• pp.37-43
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• 2012

Although schistosomicidal drugs and other control measures exist, the advent of an efficacious vaccine remains the most potentially powerful means for controlling this disease. In this study, native fatty acid binding protein (FABP) from $Fasciola$ $gigantica$ was purified from the adult worm's crude extract by saturation with ammonium sulphate followed by separation on DEAE-Sephadex A-50 anion exchange chromatography and gel filtration using Sephacryl HR-100, respectively. CD1 mice were immunized with the purified, native $F.$ $gigantica$ FABP in Freund's adjuvant and challenged subcutaneously with 120 $Schistosoma$ $mansoni$ cercariae. Immunization of CD1 mice with $F.$ $gigantica$ FABP has induced heterologous protection against $S.$ $mansoni$, evidenced by the significant reduction in mean worm burden (72.3%), liver and intestinal egg counts (81.3% and 80.8%, respectively), and hepatic granuloma counts (42%). Also, it elicited mixed $IgG_1/IgG_{2b}$ immune responses with predominant $IgG_1$ isotype, suggesting that native $F.$ $gigantica$ FABP is mediated by a mixed Th1/Th2 response. However, it failed to induce any significant differences in the oogram pattern or in the mean granuloma diameter. This indicated that native $F.$ $gigantica$ FABP could be a promising vaccine candidate against $S.$ $mansoni$ infection.

• Asian-Australasian Journal of Animal Sciences
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• 제20권5호
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• pp.622-626
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• 2007

Using multi-trait animal model BLUP, selection was conducted over seven generations for growth rate (DG), real-time ultrasound loin-eye muscle area (LEA), backfat thickness (BF), and intramuscular fat content (IMF) to develop a new line of purebred Duroc pigs with enhanced meat production and meat quality. This study was intended to investigate the relationship between restriction fragment length polymorphism (RFLP) of a heart fatty acid-binding protein (H-FABP) gene and intramuscular fat content (IMF) of this Duroc purebred population. The present experiment examined the RFLP of 499 slaughtered pigs. The DNA was separated from the blood or ear tissue of the pigs, which were slaughtered at 105 kg of body weight. Intramuscular fat content of the longissimus muscle was measured using chemical analysis. A significant difference was detected in the breeding value of IMF among the H-FABP PCR RFLP genotypes. The AA genotype has a significantly larger positive effect on the IMF breeding value than do the Aa and aa genotypes for the MspI RFLP. In addition, the DD genotype has a significantly greater positive effect on IMF breeding value than the Dd and dd genotypes for the HaeIII RFLP. For the HinfI RFLP, the hh genotype has a significantly larger positive effect on IMF breeding value than the HH genotype. Multiple regression analysis was performed using the IMF breeding values as the dependent variable and the three H-FABP genotypes as independent variables. Results revealed that the contribution of the genotypes to variation in IMF breeding values was approximately 40%. These results demonstrated that H-FABP RFLPs affect IMF in this Duroc population.

• Nutrition Research and Practice
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• 제9권6호
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• pp.592-598
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• 2015

BACKGROUND/OBJECTIVES: Increased mass of adipose tissue in obese persons is caused by excessive adipogenesis, which is elaborately controlled by an array of transcription factors. Inhibition of adipogenesis by diverse plant-derived substances has been explored. The aim of the current study was to examine the effects of the aqueous methanol extract of laver (Porphyra yezoensis) on adipogenesis and apoptosis in 3T3-L1 adipocytes and to investigate the mechanism underlying the effect of the laver extract. MATERIALS/METHODS: 3T3-L1 cells were treated with various concentrations of laver extract in differentiation medium. Lipid accumulation, expression of adipogenic proteins, including CCAAT enhancer-binding protein ${\alpha}$, peroxisome proliferator-activated receptor ${\gamma}$, fatty acid binding protein 4, and fatty acid synthase, cell viability, apoptosis, and the total content and the ratio of reduced to oxidized forms of glutathione (GSH/GSSG) were analyzed. RESULTS: Treatment with laver extract resulted in a significant decrease in lipid accumulation in 3T3-L1 adipocytes, which showed correlation with a reduction in expression of adipogenic proteins. Treatment with laver extract also resulted in a decrease in the viability of preadipocytes and an increase in the apoptosis of mature adipocytes. Treatment with laver extract led to exacerbated depletion of cellular glutathione and abolished the transient increase in GSH/GSSG ratio during adipogenesis in 3T3-L1 adipocytes. CONCLUSION: Results of our study demonstrated that treatment with the laver extract caused inhibition of adipogenesis, a decrease in proliferation of preadipocytes, and an increase in the apoptosis of mature adipocytes. It appears that these effects were caused by increasing oxidative stress, as demonstrated by the depletion and oxidation of the cellular glutathione pool in the extract-treated adipocytes. Our results suggest that a prooxidant role of laver extract is associated with its antiadipogenic and proapoptotic effects.

• 한방재활의학과학회지
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• 제18권3호
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• pp.41-49
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• 2008

Objectives : The aim of this study is to investigate Daesiho-tang(Dachaihu-tang) water extracts (DSTE) have potent anti-obesity activities in a high-fat diet-induced obesity mouse model. Methods : In this study, we designed three groups (normal diet group, high-fat diet group, high-fat diet plus DSTE group for 7-weeks oral administration). Results : Increases in body weight were inhibited by 7-weeks oral administration of DSTE at a 500 mg/kg concentration in this animal model. Results from blood lipid analysis showed that the levels of triglyceride, total cholesterol and LDL-cholesterol were significantly lowered by DSTE administration, also HDL-cholesterol was increased more than high-fat diet-induced obese mouse. To understand the underlying mechanism at the molecular level, the effects of DSTE were examined on the expression of the genes involved in lipogenesis by real-time PCR. In epididymal fat and liver of DSTE-treated mice, the mRNA level of lipogenic genes such as sterol regulatory element binding protein 1 and fatty acid synthase were decreased, which was well correlated with the reduction of the tissues weight. Conclusions : These results suggest that DSTE may have great potential as a novel anti-obesity agent.

• 농업과학연구
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• 제38권4호
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• pp.673-680
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• 2011

The aim of this study was to identify the polymorphism on fatty acid binding protein (FABP4) gene promoter region and its association with carcass traits in Hanwoo. We performed PCR-direct sequencing of FABP4 promoter region to identify single nucleotide polymorphism (SNPs) using unrelated 24 Hanwoo bulls. Four SNPs (-298A>G, -472A>G, -887A>G, -862A>G) were detected in the promoter region and genotyped on 583 Hanwoo steers. A linear mixed model revealed an association of three SNPs (-298A>G, -472A>G and -862A>G) with carcass weight and marbling score in dominance model (P<0.05). The animals with AA genotypes for the three SNPs were heavier carcass weight (5 kg) than animals with GG genotypes in the statistical analysis. For the marbling score, the AA genotype was lower effect of marbling score (0.21) than GG genotypes. In conclusion, this study indicates an important role for three SNPs detected in promoter region of FABP4 in determining carcass weight and marbling score in Hanwoo.

• 한국약용작물학회지
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• 제25권6호
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• pp.367-374
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• 2017

Background: An imbalance in energy intake and expenditure can cause obesity, which is a major risk factor for chronic diseases such as heart disease, type 2 diabetes, insulin resistance, cancers and hyperlipidemia. Methods and Results: In this study, we evaluated the anti-obesity effects of a water extract from the young leaves of barley sprout (BS) in 3T3-L1 cells and in high-fat diet (HFD)-induced obese mice (HF). Lipid accumulation measurement indicates that BS markedly inhibited adipogenesis by reducing lipid droplet production in a dose-dependent manner. Furthermore, the mRNA expression of adipogenic transcription factors peroxisome proliferator-activated receptor-${\gamma}$ and fatty acid synthetase, CCAAT/enhancer binding protein-${\alpha}$ and fatty acid binding protein 4 in 3T3-L1 cells was significantly inhibited by BS treatment. In an in vivo test, the BS-administered group of HFD-induced mice showed less body weight gain, and lower liver and epididymal white adipose tissue weights. The BS-treated mice showed decreased serum levels of leptin and lipids compared to untreated HFD mice and the levels of adiponectin and the HDL-cholesterol/total cholesterol ratio increased. These results indicate that BS inhibits body fat accumulation by reducing the mRNA expression of lipogenesis transcription factors and increasing serum adipokine concentration in in vitro and in vivo tests. Conclusions: BS reduced high fat diet-induced weight gain and had a positive effect on dyslipidemia.

• Animal Bioscience
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• 제35권8호
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• pp.1184-1194
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• 2022

Objective: High concentrate diets are widely used to satisfy high-yielding dairy cows; however, long-term feeding of high concentrate diets can cause subacute ruminal acidosis (SARA). The endocrine disturbance is one of the important reasons for metabolic disorders caused by SARA. However, there is no current report about thyroid hormones involved in liver metabolic disorders induced by a high concentrate diet. Methods: In this study, 12 mid-lactating dairy cows were randomly assigned to HC (high concentrate) group (60% concentrate of dry matter, n = 6) and LC (low concentrate) group (40% concentrate of dry matter, n = 6). All cows were slaughtered on the 21st day, and the samples of blood and liver were collected to analyze the blood biochemistry, histological changes, thyroid hormones, and the expression of genes and proteins. Results: Compared with LC group, HC group showed decreased serum triglyceride, free fatty acid, total cholesterol, low-density lipoprotein cholesterol, increased hepatic glycogen, and glucose. For glucose metabolism, the gene and protein expression of glucose-6-phosphatase and phosphoenolpyruvate carboxykinase 1 in the liver were significantly up-regulated in HC group. For lipid metabolism, the expression of sterol regulatory element-binding protein 1, long-chain acyl-CoA synthetase 1, and fatty acid synthase in the liver was decreased in HC group, whereas carnitine palmitoyltransferase 1α and peroxisome proliferator activated receptor α were increased. Serum triiodothyronine, thyroxin, free triiodothyronine (FT3), and hepatic FT3 increased in HC group, accompanied by increased expression of thyroid hormone receptor (THR) in the liver. Conclusion: Taken together, thyroid hormones may increase hepatic gluconeogenesis, β-oxidation and reduce fatty acid synthesis through the THR pathway to participate in the metabolic disorders caused by a high concentrate diet.

• 생명과학회지
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• 제32권11호
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• pp.855-864
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• 2022

Dipterocarpus tuberculatus Roxb.의 약리학적 효능은 광노화(photoaging), 염증(inflammation), 간독성(hepatotoxicity), 급성 위염(acute gastritis) 및 골유착(osseointegration)을 포함한 일부 분야에서만 연구되었다. 비만에 대한 D. tuberculatus의 새로운 효능을 규명하기 위해, Dipterocarpus tuberculatus Roxb.의 메탄올 추출물(MED)을 처리한 3T3-L1 지방세포에서 지방축적에 대한 억제효과와 지방분해에 대한 촉진효과를 연구하였다. MDI로 분화를 유도한 3T3-L1 지방세포에 분화 기간동안 MED를 처리했을 때, peroxisome proliferator-activated receptor (PPAR)γ와 CCAAT-enhancer binding protein (C/EBP) α의 mRNA 수준 뿐만 아니라 adipocyte fatty acid binding protein 2 (aP2)과 fatty acid synthase (FAS)의 발현을 억제하였다. MDI로 분화를 유도한 3T3-L1 지방세포에 분화 기간 동안 MED를 처리했을 때, Oil red O로 염색된 지방방울(lipid droplets)에서 유사한 감소가 관찰되었다. 더불어, 3T3-L1 지방세포에 MDI로 분화를 유도한 후 MED를 처리했을때, cAMP농도, free glycerol 농도, lipases의 발현을 포함한 lipolytic target의 증가가 관찰되었다. 이러한 결과는 MED가 MDI로 분화를 유도한 3T3-L1 지방세포에서 lipogenesis 저해제와 lipolysis 촉진제로서 새로운 역할을 갖음을 제시하고 있다.

• 생명과학회지
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• 제29권10호
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• pp.1144-1151
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• 2019

비알코올성 지방간은 만성 간 질환으로 비만, 고혈압, 비만, 이상지질혈증과 같은 다양한 대사증후군과 연관되어 있다. 꾸지뽕은 한국을 포함한 동아시아 국가에서 다양한 질병에 사용되는 약용작물로 본 연구에서는 유리지방산에 의해 지방축적이 유도된 세포 내에서 꾸지뽕 열매 추출물의 비알코올성 지방간 개선 효과와 기전을 규명하였다. 꾸지뽕 열매 추출물은 지방 축적 및 중성지방, 콜레스테롤 생성 및 HMG 환원효소의 활성을 억제하였다. 또한 지방생성과 관련된 유전자인 SREBP-1, FAS, SCD-1, SREBP-2의 발현을 억제 하였으며 AMPK의 활성화를 억제하였다. 본 연구결과를 통해서 꾸지뽕 열매 추출물이 유리지방산에 의해 유도된 지방 축적을 억제하고 AMPK/SREBP 신호전달 경로를 조절하여 억제 활성을 나타냄을 밝히며, 비알코올성 지방간의 예방 및 개선을 위한 천연물 소재로 활용될 수 있을 것으로 사료된다.