Food Bioscience
·
2024
·
IF 4.8
Junfeng Li,Min Guo,Cuiping Yuan,Tiezhu Li,Jie Zhang,Li Ren
ABSTRACT Peroxisome proliferator-activated receptor γ (PPARγ) was a major transcription factor and performed an essential function in the regulation of lipid metabolism. Ellagic acid (EA) was a natural phytochemical extracted from berries and pomegranates, and research had demonstrated its ameliorative effects on lipid metabolism disorders. We intended to explore the interventional effect and mechanism of action of EA on hyperlipidemia. In vitro experiments revealed that EA could reduce lipid accumulation in HepG2 cells. EA was found to bind stably to PPARγ, suppressing its nuclear translocation as well as its luciferase activity. It could also down-regulate the expression of genes and proteins related to lipid metabolism upstream and downstream of PPARγ. To explore the impact of EA on hyperlipidemia in vivo from different levels and perspectives, we established hyperlipidemia mice and hyperlipidemia zebrafish models. Consistent with the in vitro results, in vivo experiments revealed that EA attenuated lipid accumulation in hyperlipidemia mice and reduced the levels of related inflammatory factors in their serum. EA also inhibited lipid accumulation by decreasing the expression of upstream and downstream lipid-associated genes of pparg in hyperlipidemia zebrafish. In conclusion, EA could effectively improve hyperlipidemia by regulating PPARγ.
研究领域:
药理学
·
分子生物学
·
营养学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING & TECHNOLOGY
·
2018
·Vol. 41
·期 6
·1188-1198
·
IF 1.588
Li Wang,Bolin Lian,Weiwei Wu,Yiping Deng,Yanjie Liu,Lingling Wang,Yuanyuan Li,Zijian Wang,Xiuhua Zhao
Ellagic acid (EA) was produced from pomegranate husk by extraction of tannins followed by acid hydrolysis and purified by antisolvent recrystallization. Response surface methodology, based on a five-level, four-variable central composite design, was employed to find the optimum purification conditions. Under these conditions, high purity and yield of EA was obtained in close agreement with the predicted values by the model. Analyzes of surface morphology and in vitro percutaneous absorption experiments of EA let conclude that the granule morphology of the purified EA was significantly different from the crude EA, and its particle size was much smaller than that of the crude EA. Evaluation in vitro demonstrated that the permeation rate of the purified EA was higher compared with the crude EA.
研究领域:
植物化学
·
药物化学
·
食品科学
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Minglu Zhang,Yi Zhang,Zhi-feng Cai
Development of beneficial sensors to analyze ellagic acid concentrations is of great importance for food safety and human health. Herein, a facile and fast fluorescent probe was carried out for the excellently selective and sensitive measurement of ellagic acid in real samples through histidine protected copper nanoclusters (histidine@Cu NCs) as a nanosensor. This as-developed histidine@Cu NCs were performed through UV–vis absorption spectroscopy, fluorescence spectroscopy, transmission electron microscopy, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy and fluorescence lifetime analysis. The TEM image revealed that this nanomaterial had spherical features with the average diameter of 2.5 ± 0.05 nm. The blue-green fluorescence of this Cu NCs was found under the UV light. Meanwhile, the maximum excitation and emission wavelength were located at 387 nm and 488 nm. After addition of ellagic acid, the fluorescence of histidine@Cu NCs was slowly weakened with excellent linear range of 0.5–300 μM and detection limit of 0.077 μM. The fluorescence weakening mechanism of this nanosensor were attributed to the inner filter effect (IFE) and static quenching. Finally, this as-established analysis platform was successfully employed to measure ellagic acid in real samples.
研究领域:
分析化学
·
食品安全
·
生物传感
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产品关联
DOI
PubMed
高影响因子
AAPS PHARMSCITECH
·
2025
·Vol. 26
·期 4
·1-17
·
IF 4
Luo Zhilin,Sun Yao,Cai Shihao,Liu Hongting,Zhao Conglu,Xu Xiang,Xu Aiguo,Zhou Honggang,Yang Cheng,Gu Xiaoting,Ai Xiaoyu
Idiopathic Pulmonary Fibrosis (IPF) is a rare and serious chronic interstitial lung disease that may endanger the lives of patients. The median survival time of patients with idiopathic pulmonary fibrosis is short, and the mortality rate is higher than that of many types of cancer. At present, pirfenidone (PFD) and nintedanib (NDNB) have been approved by FDA for IPF, but they can only delay the process of pulmonary fibrosis and cannot cure the disease. Therefore, it is urgent to develop other drugs with the effect of improving pulmonary fibrosis. Ellagic acid (EA) can inhibit the Wnt-signaling pathway and has an effect in treating pulmonary fibrosis induced by bleomycin (BLM) in mice. However, its solubility is poor, resulting in its low bioavailability and limited therapeutic benefits, so its clinical application has been limited. Herein, based on the characteristics of nano-drug lung delivery system, chitosan (CS) was selected as the carrier, and ellagic acid-loaded chitosan nanoparticles (EA-CS-NPs) were prepared by ionic gelation method. The EE% and DL% of prepared EA-CS-NPs was 73.73 ± 4.52% and 6.23 ± 1.09%, the particle size was 119.6 ± 5.51 nm (PDI = 0.234 ± 0.017), the zeta potential was 29.833 ± 0.503 mV. The morphology of the nanoparticles was observed by TEM microscope, which was round, uniform dispersion, indicating that the preparation process is stable and feasible. The toxicity experiment showed that EA-CS-NPs maintained 80% cell viability, significantly higher than that of the NDNB group, indicating lower toxicity and better inhibitory effects on TGF-β1-stimulated MLg and NIH-3T3 cells. Wound healing assay results showed that the inhibitory effect of EA-CS-NPs on cell migration was more pronounced than that of EA in the same amount of EA-containing drugs. Drug uptake experiments revealed that EA-CS-NPs significantly enhanced drug uptake in MLg and NIH-3T3 cells. In vivo , Cy7-CS-NPs exhibited higher fluorescence intensity in rat lungs compared to Cy7 solution, indicating better lung retention. The in vivo efficacy test showed that compared with the EA group, EA-CS-NPs could better reduce the area of pulmonary fibrosis and collagen deposition, improve lung function, and have a longer retention time in the lung. In summary, our results revealed that EA-CS-NPs may be a good choice for the treatment of pulmonary fibrosis. Graphical
研究领域:
药剂学
·
呼吸病学
·
纳米医学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Ziting Yuan,Wei Tang,Bin Sun,Kai Li,Li Yuan,Yujin Zhang
Ellagic acid (EA), a natural and environmentally friendly polyphenol, positively impacts human health and is widely used in the food and medical industries. It features a well-organized planar structure with an extensive sp 2 carbon-conjugated area and four phenolic hydroxyl groups, making it favorable for light energy absorption and fluorescent emission. This positions EA as a promising candidate for advanced fluorescence applications. To date, the fluorescence properties of EA have not been thoroughly investigated. In this research, we comprehensively examined the fluorescence properties of EA in various solvents—including alkaline aqueous, alcoholic, nitrogenous, other organic solvents, and polyethylene glycols (PEGs)—using transient/steady-state fluorescence spectroscopy, ultraviolet–visible absorption spectroscopy, Fourier-transform infrared spectroscopy, and density functional theory calculations. Additionally, the relationship between structural changes of EA in these solvents and its fluorescence properties was deeply investigated. It was discovered that general solvation effects (solvent polarity effects), hydrogen bonding effects, and viscosity effects are the main ways that solvents alter the optical characteristics of EA. EA exhibits outstanding fluorescence characteristics in PEG400, creating a bright green fluorescence with the highest Stokes shift at 170 nm among the 32 organic solvents and alkaline aqueous solutions examined. This study is both foundational and essential, setting the stage for advancing the research on EA-based fluorescent materials in future endeavors.
研究领域:
化学
·
生物学
·
材料科学
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产品关联
DOI
高影响因子
Scientific Reports
·
2018
·Vol. 8
·期 1
·1-10
·
IF 4.122
Chen Peng,Chen Fuchao,Zhou Benhong
Accumulating evidence has suggested that oxidative stress and apoptosis are involved in the ageing process. D-galactose (gal) has been reported to cause symptoms of ageing in rats, accompanied by liver and brain injuries. Our study aimed to investigate the potential antioxidative, anti-inflammatory and anti-apoptotic effects of ellagic acid and to explore how these effects act on rats in a D-gal-induced ageing model. Ageing was induced by subcutaneous injection of D-gal (100 mg/kg/d for 8 weeks). Ellagic acid was simultaneously administered to the D-gal-induced ageing rats once daily by intragastric gavage. Finally, the mental condition, body weight, organ index, levels of inflammatory cytokines, antioxidative enzymes, and liver function, as well as the expression of pro- and anti-apoptotic proteins, were monitored. Our results showed that ellagic acid could improve the mental condition, body weight, organ index and significantly decrease the levels of inflammatory cytokines, normalize the activities of antioxidative enzymes, and modulate the expression of apoptotic protein in ageing rats. In conclusion, the results of this study illustrate that ellagic acid was suitable for the treatment of some ageing-associated problems, such as oxidative stress, and had beneficial effects for age-associated diseases.
研究领域:
药理学
·
老年医学
·
分子生物学
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产品关联
DOI
PubMed
高影响因子
Journal of Biomaterials and Tissue Engineering
·
2019
·Vol. 9
·期 8
·1108-1113
·
IF 0.824
Fan Gaofu,Xu Zhenguo,Tang Jie,Liu Longyun,Dai Ruomeng
Objection: To study the effect of modified formulae for ellagic acid (EA) on wound healing and macrophage phenotype transformation in diabetic mice. Materials and Methods: 10 db/m mice regarded as normal group, Dividing 20 db/db mice as the model group and EA group, 10
in every group. Surgical operation on the back was made to prepare experimental wound models. External medicines were applied and changed dressings every other day and measurement. Wound tissues were gained when animals were sacrificed by anesthesia 7 days later. Pathological changes were
observed by HE and Masson staining methods, while using RT-PCR and IHC to measure mRNA and protein levels of MI/M2 type cytokines of the wound tissues. Results: Compared with the normal group, the wound area of db/db was greater (P < 0.001), while EA group less (P <
0.001). IL-12 and TNF-α mRNA and proteins levels in model group were higher (P < 0.001, respectively), while VEGF and TGF-βmRNA and proteins were lower. mRNA and protein levels of inflammato cytokines of EA group was all lower (P < 0.001), while
the growth factor were significantly higher (P < 0.001). Conclusion: Wound healing of db/db mice was delayed and modified formulae for EA had effects on wound healing. The way by decreasing the Ml type inf1ammatory factors and improving the M2 type growth factors might be
one of the mechanisms for wound healing.
研究领域:
医学
·
药理学
·
分子生物学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Zhao-Rong Li,Rui-Bo Jia,Xueyuan Cai,Donghui Luo,Chong Chen,Mouming Zhao
The current study was aimed to enhance the solubility, dispersibility and biotransformation efficacy of ellagic acid (EA) by preparing food-derived ellagic acid- Undaria pinnatifida polysaccharides solid dispersion (EA/UPP SD). The results demonstrated that the solubility of EA/UPP SD was improved from 0.014 mg/mL to 0.383 mg/mL, and the enhancement was related to converting to a more amorphous state and restraining its self-aggregation during the mechanochemical process. The structure of EA/UPP SDs was mostly maintained by hydrogen bonds and hydrophobic interactions between EA and UPP . Moreover, the result of in vitro anaerobic incubations showed the biotransformation process was improved with EA/UPP SD addition to substrate due to the advance of microbial accessibility in EA dispersion. Altogether, these results indicated that the EA/UPP SDs expanded the application of EA by increasing the solubility and dispersity, and provided a theoretical basis for bioconversion efficiency enhancement.
研究领域:
食品科学
·
药学
·
生物技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2022
·
IF 5.895
Ziyan Wang,Heping Cui,Mengyu Ma,Khizar Hayat,Xiaoming Zhang,Chi-Tang Ho
The effect of ellagic acid on the formation of pyrazine, methylpyrazine, 2,3-methylpyrazine, 2,6-methylpyrazine, 2,5-methylpyrazine, and trimethylpyrazine in the xylose–glycine Maillard reaction model was researched. Ellagic acid could either inhibit or promote pyrazine formation, depending on its addition time point and the pH of the system. The addition of ellagic acid during the accumulation period of an Amadori compound inhibited pyrazine formation by capturing the Amadori compound in the xylose–glycine Maillard system and decreasing the pyrazine precursors. The inhibitory effect of ellagic acid on pyrazine formation got more obvious with an increase in the pH of the system. However, when ellagic acid was added at the beginning of the xylose and glycine Maillard system and when the oxidizing substances such as glyoxal and methylglyoxal were significantly formed in the Maillard system, its oxidation could promote the formation of pyrazines.
研究领域:
食品化学
·
有机化学
·
美拉德反应
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Dang Chunlei,Jiang Jing,Zhao Lin,Zhang Yagang
The
anthropogenic acceleration of the nitrogen cycle has exacerbated
nitrate contamination in water bodies, posing threats to both ecological
balance and public health. Conventional physicochemical separation
and biological denitrification technologies suffer from high costs,
secondary pollution, or resource wastage. The electrochemical nitrate
reduction reaction (NO 3 RR) offers a promising route to
convert nitrate into value-added ammonia, combining environmental
remediation with resource recovery. However, its application is hindered
by sluggish multielectron transfer kinetics and competition from the
hydrogen evolution reaction (HER). The purpose of this study is to
develop a high-performance NO 3 RR electrocatalyst with precise
regulation of metal ion distribution by EA, to promote the metal-polyphenol
self-assembly system from the perspective of ligand engineering, and
to provide new insights for the rational design of advanced heterogeneous
electrocatalysts. Building on the demonstration that the metal-polyphenol
assembly strategy enhances the catalytic performance of Co 3 O 4 , we further introduced ellagic acid (EA), a small-molecule
polyphenol, to coordinate and self-assemble with transition metal
ions of different valence states (Fe 3+ , Ni 2+ , Cu 2+ ). A series of EA-M/Co 3 O 4 (M
= Fe, Ni, Cu) catalysts was constructed to investigate the effects
of polyphenol molecular structure and metal substitution mode on the
structure and performance of Co 3 O 4 . The results
show that the system exhibits excellent catalytic activity: EA-Cu/Co 3 O 4 achieves a Faradaic efficiency of 96.83% at
−0.3 V vs RHE and an NH 3 yield of 279.43 μmol
h –1 cm –2 at −0.5 V vs RHE.
Furthermore, density functional theory (DFT) calculations elucidate
the NO 3 RR mechanism on EA-Cu/Co 3 O 4 . Cu 2+ doping modulated the electronic structure, enhanced
the adsorption of reactants, and thereby promoted the NO 3 RR process.
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Chunjun Yan,Zheng Zhou
Prion diseases are fatal neurodegenerative diseases caused by the conformational transition of the cellular prion protein (PrP C ) to the abnormal pathological prion protein (PrP Sc ). In this work, the effects of ellagic acid (EA) and pentagalloylglucose (PGG) on prion protein (PrP) fibrillization were investigated. Fluorescence quenching experiments indicated that both EA and PGG could specifically interact with native human PrP with binding affinities of 1.92 × 10 5 and 2.36 × 10 5 L·mol −1 , respectively. Thioflavin-T (ThT) fluorescence assays showed that the binding of EA or PPG could effectively inhibit the nucleation and elongation of PrP fibrilization and reduce the amount of PrP fibrils generated. EA and PGG could also lead to a significant disaggregation of PrP fibrils. Circular dichroism (CD) measurements suggested that EA- or PPG-bound PrP could preserve a higher content of α-helical structures than β-sheet-rich PrP fibrils. The PrP aggregates formed in the presence of EA or PGG showed lower resistance to proteinase K (PK) digestion. Overall, the present work reported the inhibitory effect of EA and PGG on PrP fibrillization. These two natural polyphenols could be potential prodrug molecules for the prevention and treatment of prion diseases.
研究领域:
神经科学
·
生物化学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomaterials Advances
·
2025
·
IF 6
Yinan Wang,Xiuxiu Huang,Xiao Luo,Meizhen He,Yuqi Fang,Dongzhi Yang
Oxidative stress plays a key role in inflammatory diseases like colitis, but traditional antioxidants are limited by poor bioavailability and non-specific actions, reducing their effectiveness. This study seeks to overcome these limitations by creating a targeted nanotherapy that combines natural ellagic acid with bismuth-based metal-organic framework (MOF) chemistry. SU-101, a MOF, was synthesized through the coordination of ellagic acid and bismuth acetate. SU-101, with a rod-like shape and a zeta potential of −38.51 mV, effectively targets inflamed colonic tissue. It shows strong radical scavenging and SOD/CAT-mimetic activities, providing dual therapeutic benefits. At 5 mg/kg orally, SU-101 outperforms 5-aminosalicylic acid (5-ASA) by reducing weight loss, lowering pro-inflammatory cytokines (IL-6, TNF-α), restoring intestinal barrier proteins, and altering gut microbiota and arginine metabolism. As the ellagic acid-derived bismuth MOF, SU-101 offers precise, multi-level treatment for oxidative inflammation, with promising oral bioavailability and microbiome remodeling potential for inflammatory bowel disease therapy.
研究领域:
纳米医学
·
炎症性肠病（IBD）
·
材料科学
·
胃肠病学
·
活性氧清除
·
药物递送
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）