AQUACULTURE NUTRITION
·
2024
·Vol. 2024
·期 1
·6670740
·
IF 3
Dingfei Ma,Qiangwei Li,Yuanyuan Xie,Youqin Kong,Zhili Ding,Jinyun Ye,Chenglong Wu,Yan Liu
Erucic acid (EA) in rapeseed oil has adverse effects on terrestrial animal and fish health. However, its antinutritional role in fish remains unclear due to the limited information on EA. Therefore, this study was conducted to assess the impact of EA on growth performance, antioxidative capacity, fatty acid profile, and lipid metabolism in tilapia. Six diets containing different amounts of EA (0, 3, 6, 12, 20, and 27 g/kg diet) were fed to tilapia (initial weight: 3.01 ± 0.01 g) for 8 weeks. The results exhibited that dietary EA did not affect growth performance but remarkedly increased the crude lipid contents (in the whole body, liver, and muscle). It also markedly increased the levels of low-density lipoprotein cholesterol, total cholesterol, nonesterified fatty acids, and triglyceride in the liver and serum in a dose-dependent manner. The EA groups had lower values of total superoxide dismutase, total antioxidant capacity, catalase, and higher activities of aspartate aminotransferase and alanine aminotransferase, as dietary EA levels increased. Feeding fish with diets containing EA (20 and 27 g/kg diet) significantly increased the malondialdehyde content. Moreover, dietary EA greatly altered the fatty acid profile in the liver and muscle. It especially elevated the percentages of C18 : 2n-6, C20 : 1n-9, and C22 : 1n-9 while decreasing the C18 : 0 and C16 : 0 levels. When the levels of EA in diets were 12, 20, and 27 g/kg, genes correlated with lipophagy, lipolysis, and β -oxidation were significantly reduced. Meanwhile, genes concerned in triglyceride synthesis were largely increased in the liver and muscle. In summary, high-dose EA (20 g/kg diet) in the diets significantly induced fat accumulation, hepatic oxidative damage, and abnormal lipid metabolism in tilapia. The current findings expand our understanding on the antinutritional role of EA in lipid homeostasis and fish health.
研究领域:
水产养殖学
·
营养学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Marine Drugs
·
2020
·Vol. 18
·期 10
·490
·
IF 4.073
Xuesong Yu,Qina Su,Tianqi Shen,Qiong Chen,Ying Wang,Weizhang Jia
The hydrolysate of golden cuttlefish (Sepia esculenta) was prepared by using papain, and then, it was further separated by ultrafiltration, gel filtration chromatography, and reverse-phase high-performance liquid chromatography (RP-HPLC). The peptide components of the active fraction were identified by liquid chromatography-tandem mass spectrometry (LC-MS/MS), and then two novel peptides, SeP2 (DVEDLEAGLAK, 1159.27 Da) and SeP5 (EITSLAPSTM, 1049.22 Da), were obtained and displayed significant alleviation effects on oxidative stress inCaenorhabditis elegans. Studies indicated thatS. esculentaantioxidant peptides (SePs) increase superoxide dismutase (SOD) activity but reduce reactive oxygen species (ROS) and malondialdehyde (MDA) levelsin oxidation-damaged nematodes. Using transgenic CF1553 nematodes, thesod-3p::GFP expression in the worms treated with SePs was significantly higher than that of the control nematodes. Real-time PCR also demonstrated that the expression of stress-related genes such assod-3is up-regulated by SePs. Furthermore, studies showed that SePs could obviously decrease fat accumulation as well as reduce the elevated ROS and MDA levels in high-fat nematodes. Taken together, these results indicated that SePs are capable of the activation of antioxidant defense and the inhibition of free radicals and lipid peroxidation, play important roles in attenuating oxidative stress and fat accumulation inC. elegans, and might have the potential to be used in nutraceutical and functional foods.Keywords:antioxidant peptides;oxidative stress;fat accumulation;Sepia esculenta;Caenorhabditis elegans
研究领域:
营养保健品
·
功能性食品
·
分子生物学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Xue Zhang,Pei Hu,Xiaorui Zhang,Xiaojun Li
ABSTRACT A neutral polysaccharide (LCPS) was obtained from Lobelia chinensis via hot water extraction and ethanol precipitation. After separation and purification, the homogeneous polysaccharide was obtained with a molecular weight of 2.6 × 10 3 Da. The chemical composition of the extracted polysaccharide contains fructose and glucose with protein-free identified by gas chromatography-mass spectrometer (GC-MS) method. Chemical structure of LCPS was indicated by nuclear magnetic resonance (NMR) spectroscopy. Data indicated that LCPS was an inulin-type fructan with α-D-Glc p -(1→[1)-β-D-Fru f -(2] 15 linkage. LCPS intake reduced at significant level high fat diet (HFD)-induced body weight gain, liver weight, total cholesterol and triglyceride in serum and hepatic tissue, respectively. The lipid droplet accumulation in hepatic tissue was similar between lean and LCPS groups lower than in HFD-induced mice from tissue section staining results. Together, polysaccharides from Lobelia chinensis could be a new source of natural anti-obesity agent against obesity with potential value in the manufacturing supplements and drugs.
研究领域:
植物化学
·
营养学
·
代谢研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Aquaculture Reports
·
2024
·
IF 3.2
Yuru Zhang,Haiying Fan,Kedi Gao,Shibo Zhang,Ronghua Lu,Xianglin Cao,Xinxin Xu,Jiancheng Liu
The grass carp ( Ctenopharyngodon idella ) holds significant economic value worldwide. However, intensive farming practices often result in lipid metabolic disorder of fish. It is essential to explore the influence of pivotal genes in the process of fat accumulation, particularly from the perspective of fat transport. Fatty acid binding proteins (FABPs) are crucial for selectively binding and transporting free fatty acids (FAs) within cells. Nevertheless, the types of fabp genes in the grass carp genome and their responses to various FAs remain unclear. In the current study, exhaustive bioinformatic analysis identified nine fabp genes in the grass carp genome: fabp1a, fabp1b.1, fabp2, fabp3, fabp6, fabp7a, fabp10a, fabp11a, and fabp11b . Although these genes showed widespread expression across various tissues, each gene displayed distinct preferences for specific primary expression tissues. Notably, fabp1a exhibited prominent expression in muscle, fabp1b.1 in abdominal fat, fabp2 and fabp6 in the intestine, fabp7a in the brain, fabp10a in the hepatopancreas, and fabp11a showed maximal expression in the eye. Findings from primary grass carp hepatocytes revealed that the addition of palmitic acid (PA), high concentrations oleic acid (OA) and docosahexaenoic acid (DHA) (400 µM), significantly increased intracellular lipid accumulation. Intriguingly, the addition of PA resulted in increased expression of fabp2 and fabp11a , while DHA significantly enhanced the expression of fabp7a ( P < 0.01). Given that the accumulated FAs are primarily saturated fatty acids, these results suggest that regulating fabps , especially fabp2 and fabp11a, could be a strategy to control fat deposition in grass carp.
研究领域:
水产养殖学
·
分子生物学
✓ 已验证
DOI
高影响因子
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
·
2023
·
IF 1.6
Guo Cheng,Shen Wangyang,Jin Weiping,Jia Xiwu,Ji Zhili,Jinling Li,Bin Li
Epigallocatechin gallate (EGCG) and caffeine are inevitable to be ingested together in the process of drinking green tea. This study used Caenorhabditis elegans as organism model to examine whether the binding of EGCG and caffeine could influence the fat reduction effect. The results revealed that EGCG significantly reduced the Nile Red fluorescence intensity and the triglyceride/protein ratio of obesity model C. elegans by 14.7% and 16.5% respectively, while the effect of caffeine was not significant. Moreover, the degree of reduction in fluorescence intensity and triglyceride/protein ratio by EGCG + caffeine was comparable to that of EGCG. In the exploration of underlying mechanism, we found that EGCG and EGCG + caffeine treatments had no influence on food intake and energy expenditure of C. elegans. Their fat reduction effects were dependent on the regulation of lipogenesis, as shown by the decreased expression of sbp-1, fat-7 and daf-16 genes.
研究领域:
营养学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2025
·Vol. 26
·期 7
·3048
·
IF 4.9
Aimin Qiao,Meiqing Pan,Yue Zeng,Ying Gong,Yunfeng Zhang,Xiucai Lan,Lei Tang,Weizhang Jia
Matrine, a quinoline alkaloid, possesses lipid-regulating effects, but the underlying mechanisms are rarely characterized in vivo. With a fat-accumulating Caenorhabditis elegans model, we show that matrine reduces the fat content and the DHS-3::GFP-labeled lipid droplets in high-glucose-diet N2 and transgenic LIU1 nematodes, respectively. Based on RNA-seq, this study demonstrates that a loss of AAK-2 function suppresses the fat-lowering effects of matrine, and the hyperactivated AAK-2 strain has a relatively lower fat content than N2. The involvement of NHR-49 in matrine’s fat-lowering effects further suggests that matrine impacts fat breakdown and storage via the AAK-2/NHR-49-governed pathway. Using the transgenic SJ4143 ( ges-1::GFP(mit) ) and VS10 ( vha-6p::mRFP-PTS1 ), we show that matrine activates the AAK-2/NHR-49 pathway, coupling the alteration of mitochondrial and peroxisomal functions. Studies of aak-2 and nhr-49 mutants reveal that AAK-2 and NHR-49 modulate lipid metabolic homeostasis; meanwhile, matrine increases physical fitness and lifespan through activating the AAK-2/NHR-49 pathway in high-glucose-diet nematodes. Surprisingly, we found that β-amyloid (Aβ) induces lipid metabolic disorder in an Alzheimer’s disease (AD) C. elegans model, but matrine not only reduces Aβ aggregation but also alleviates Aβ-mediated lipid metabolic disorder. Our data suggest that matrine has promise as a fat-lowering agent, and also offer new insights into its therapeutic potential for AD.
研究领域:
生物化学
·
分子生物学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nutrients
·
2023
·Vol. 15
·期 7
·1718
·
IF 5.9
Manman Zhao,Beibei Wang,Li Li,Wei Zhao
Although many efforts have been made to characterize the functional properties of flaxseed, knowledge concerning the properties of insoluble and soluble dietary fibers in flaxseed is still limited. Here, insoluble and soluble dietary fibers were extracted from flaxseed cake—a valuable resource that has not been fully exploited. Subsequently, their monosaccharide compositions, structural properties, and anti-obesity effects in male mice were characterized. The anti-obesity effects of flaxseed cake insoluble dietary fiber (FIDF), flaxseed cake soluble dietary fiber (FSDF), and FIDF combined with FSDF in diet-induced obese mice were investigated in our study. Supplementation with FSDF alone or FIDF and FSDF together lowered the fat accumulation, improved the serum lipid profile, increased the basal metabolism, and improved the gut microbiota of obese mice. Supplementation with FIDF and FSDF together significantly enriched the abundance ofg_Akkermansiaandg_Bifidobacterium, which are negatively associated with obesity. Supplementation with FIDF alone improved the liver lipid profile, raised the basal metabolism, and enhanced the short-chain fatty acid levels in the guts of the mice. In conclusion, our results collectively support the therapeutic potential of FIDF and FSDF in obesity treatment and indicate that FIDF and FSDF play different roles in the process of obesity treatment. Furthermore, our results provide critical information for flaxseed cake resource exploitation.Keywords:flaxseed cake;insoluble dietary fiber;soluble dietary fiber;high-fat diet;lipid accumulation;gut microbiota
研究领域:
营养学
·
代谢研究
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nutrients
·
2023
·Vol. 15
·期 4
·980
·
IF 5.9
Jingya Guo,Mengjie Li,Yuhan Zhao,Seong-Gook Kang,Kunlun Huang,Tao Tong
Cedryl acetate (CA), also called acetyl cedrene, is approved by the FDA as a flavoring or adjuvant to be added to foods. In this study, we aimed to investigate the preventive benefits of CA on obesity and obesity-related metabolic syndrome caused by a high-fat diet (HFD). Three groups of C57BL/6J mice (ten-week-old) were fed Chow, an HFD, or an HFD with CA supplementation (100 mg/kg) for 19 weeks. We observed that CA supplementation significantly reduced weight gain induced by an HFD, decreased the weight of the visceral fat pads, and prevented adipocyte hypertrophy in mice. Moreover, mice in the CA group showed significant improvements in hepatic lipid accumulation, glucose intolerance, insulin resistance, and gluconeogenesis compared with the mice in the HFD group. Since 16S rRNA analysis revealed that the gut microbiota in the CA and HFD groups were of similar compositions at the phylum and family levels, CA may have limited effects on gut microbiota in HFD-fed mice. The beneficial effects on the metabolic parameters of CA were reflected by CA’s regulation of metabolism-related gene expression in the liver (includingPepck,G6Pase, andFbp1) and the epididymal white adipose tissues (includingPPARγ,C/EBPα,FABP4,FAS, Cytc,PGC-1α,PRDM16,Cidea, andCOX4) of the mice. In summary, a potent preventive effect of CA on HFD-induced obesity and related metabolic syndrome was highlighted by our results, and CA could be a promising dietary component for obesity intervention.Keywords:cedryl acetate;high-fat diet;obesity;gut microbiota
研究领域:
营养学
·
代谢学
·
药理学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food & Function
·
2023
·Vol. 14
·期 10
·4763-4776
·
IF 6.1
Xinyue Zhang,Dan Li,Kexin Wang,Jiao Xie,Yaojie Liu,Tianxin Wang,Suwen Liu,Qun Huang,Qingbin Guo,Hao Wang
Hyperoside, the main component of many anti-obesity plants, might exhibit a lipase inhibition effect to reduce fat accumulation. The anti-obesity effect of hyperoside was investigated by studying its inhibitory effect and mechanism on pancreatic lipase in vitro and evaluating its ability to reduce lipid accumulation in vivo. Hyperoside is a mixed-type inhibitor of lipase with an IC50 of 0.67 ± 0.02 mmol L−in vitro. Hyperoside changed the secondary conformation of lipase, increased the α-helix content, and changed the microenvironment of lipase through static quenching. The interaction between hyperoside and lipase results from a strong binding spontaneous exothermic reaction, mainly through hydrogen bonding, van der Waals force and electrostatic force. Hyperoside protected hepatic lipid accumulation and adipose tissue hypertrophy and reduced the expression of inflammatory factors in high-fat diet-induced rats. Moreover, hyperoside had a good inhibitory effect on lipase activity in serum and increased fecal fat excretion, thereby reducing lipid absorption in vivo. This study provides theoretical support for the research and development of hyperoside in fat-reducing functional foods.
研究领域:
药理学
·
营养学
·
生物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Food & Function
·
2023
·Vol. 14
·期 3
·1674-1684
·
IF 6.1
Jingqi Zhao,Yantong Sun,Cuiping Yuan,Tiezhu Li,Yuan Liang,Haoyang Zou,Jie Zhang,Li Ren
As a natural pigment in food, quercetin possesses multiple biological activities and plays a crucial role in regulating metabolic syndrome. Herein, we aim to explore the potential mechanism of quercetin to ameliorate hepatic fat accumulation. In vivo experiments showed that quercetin significantly relieved inflammation response by decreasing the serum TNF-α and IL-6 levels and also improved high-fat diet-induced hepatic steatosis without other organ injuries. Quercetin can effectively reduce lipid aggregation and down-regulate the protein expression of PCK1 in HepG2 cells induced by oleic acid and palmitic acid, indicating that inhibiting gluconeogenesis leads to hepatic fat accumulation reduction. Furthermore, molecular docking results suggested that quercetin can bind to both PPARα and PPARγ, with an even more potent binding affinity than indeglitazar, a pan-agonist of PPARs. In conclusion, quercetin may regulate gluconeogenesis to ameliorate hepatic fat accumulation via targeting PPARα/γ.
研究领域:
药理学
·
代谢学
·
营养学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Cell and Bioscience
·
2019
·Vol. 9
·期 1
·1-15
·
IF 3.355
Tan Jianxin,Wang Yajun,Wang Siliang,Wu Simeng,Yuan Zhe,Zhu Xike
Background Adipocyte accumulation is a predominant feature of age-related thymic involution, but the mechanisms responsible for thymic adipogenesis remain to be elucidated. The aim of this study was to identify key regulators in thymic adipogenesis. We used rosiglitazone, a potent peroxisome proliferator-activated receptor γ (PPARγ) agonist, to induce adipogenic differentiation of OP9-DL1 cells, and investigated the differentially expressed proteins during adipogenic differentiation by using label-free quantitative proteomics. Furthermore, the effects of transforming growth factor β1 (TGF-β1) on rosiglitazone-induced adipogenic differentiation of OP9-DL1 cells as well as the underlying mechanisms were also investigated. Results Proteomic analysis identified 139 proteins differed significantly in rosiglitazone-treated cells compared with dimethyl sulphoxide (DMSO)-treated cells. Rosiglitazone-induced adipogenic differentiation was inhibited by TGF-β1 treatment in OP9-DL1 cells and primary thymic stromal cells. Real-time PCR analysis showed significant increases in PPARγ and fatty acid binding protein 4 mRNA levels in rosiglitazone-treated cells, which were inhibited by TGF-β1 treatment. TGF-β1 down-regulated PPARγ expression at both mRNA and protein levels in OP9-DL1 cells. Chromatin immunoprecipitation analysis demonstrated that TGF-β1 enhanced the binding of Smad2/3 and histone deacetylase 1, but reduced the binding of H3K14ac to the promoter of PPARγ gene. TGF-β1 partially reversed the inhibitory effects of rosiglitazone on the expression of Axin2 and β-catenin protein levels. TGF-β1 inhibited rosiglitazone-induced adipogenic transformation in OP9-DL1 cells by down-regulation of PPARγ and activation of the canonical Wnt/β-catenin signaling pathway. Conclusion Taken together, activation of TGF-β pathway may serve as a useful strategy to prevent thymic adiposity in age-related thymic involution.
研究领域:
免疫学
·
细胞生物学
·
蛋白质组学
·
分子生物学
·
衰老研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Advanced Research
·
2024
·
IF 11.4
Han-Yan Luo,Jing Fang,Wei-Hao Zhang,Kam-Chun Chan,Yui-Man Chan,Cai-Xia Dong,Song-Lin Li,Ai-Ping Lyu,Jun Xu
Introduction Ginseng demonstrates therapeutic potential in treating obesity, with both experimental and clinical studies suggesting its anti-obesity effects are mediated by gut microbiota. Nonetheless, the specific chemical components responsible for this effect remain largely unidentified. Objectives This study aims to investigate the anti-obesity effects and mechanisms of ginseng polysaccharides (GP) and ginsenosides (GS), the primary chemical components of ginseng, with a focus on their impact on gut microbiota. Methods The impact of GP and GS on high-fat diet (HFD)-induced obesity was assessed using a mouse model. Molecular mechanisms were explored through a combination of chemical analysis, metagenomics, RT-qPCR, ELISA, and biochemical assays. Results GP or GS administration effectively prevented adiposity in HFD-fed mice, and both effects were mediated by gut microbiota. Chemical analysis revealed diverse glycosyl groups in GP and GS. Metagenomics data suggested that GP-enriched species, e.g., Bacteroides stercorirosoris and Clostridiales bacterium encoded carbohydrate-active enzymes GH35, GH43 and PL9_1, while GS-enriched Sulfurospirillum halorespirans encoded GH16_5. These enzymes facilitated the utilization of glycosyl groups in GP and GS, selectively stimulating bacterial growth and reshaping the gut microbiota. Furthermore, bacterial species enriched by GP or GS encoded specific functional genes involved in short-chain fatty acid (SCFA) synthesis (K00625 and K00925 for GP; K18118, K00100, and K18122 for GS) and intestinal gluconeogenesis (IGN) (K01678, K00024, and K01596 for GP; K18118 and K00278 for GS). Consequently, the SCFA-GLP-1/PYY signaling and IGN were activated by both GP and GS to ameliorate obesity phenotypes. Conclusion GP and GS, containing diverse glycosyl groups, selectively stimulate specific gut bacteria, triggering mechanisms involved in SCFA-GLP-1/PYY signaling and IGN activation to reduce adiposity in HFD-fed mice. The study enhances understanding of the chemical components crucial for the gut microbiota-mediated anti-obesity effect of ginseng. The mechanistic understanding provides valuable insights for developing ginseng-based drugs or health products to combat obesity.
研究领域:
营养学
·
药理学
·
微生物学
·
分子生物学
·
肥胖研究
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）