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https://www.readbyqxmd.com/read/29684858/a-novel-triazine-ring-compound-md568-exerts-in-vivo-and-in-vitro-effects-on-lipid-metabolism
#1
Dan Jia, Ziwen Li, Ying Gao, Yifan Feng, Weimin Li
In this study, we investigated the toxicity and biological activity of a novel triazine ring compound named magnolol derivative 568 (MD568). The LD50 of MD568 was determined in Sprague-Dawley (SD) rats by intraperitoneal injection. Treatment of high fat diet-induced obese rats with MD568 demonstrated that MD568 displayed significant anti-obesity effects. MD568 markedly reduced body weight, blood lipid contents, white adipose tissue (WAT) and liver mass in obese rats. In addition, MD568 modulated lesions in WAT through regulating PPAR-Ɣ, C/EBP-a, SREBP-1c and FABP-4 proteins in the liver through regulating PPAR-α, SREBP-1c and FABP-4...
April 20, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29627576/magnolol-abrogates-chronic-mild-stress-induced-depressive-like-behaviors-by-inhibiting-neuroinflammation-and-oxidative-stress-in-the-prefrontal-cortex-of-mice
#2
Jie Cheng, Shuqi Dong, Litao Yi, Di Geng, Qing Liu
Magnolol, the main constituent of Magnolia officinalis, has been shown to produce antidepressant-like effect in rodents. Growing evidence shows that neuroinflammation, oxidative stress and neuroendocrine contribute to the pathogenesis of major depression. Here, the aim of this present study was to determine whether magnolol affected these systems in mice exposed to chronic mild stress (CMS). The ameliorative effect of magnolol on depressive-like symptoms was investigated through behavioral tests, including the classical sucrose preference and forced swimming tests...
April 5, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29624001/magnolol-inhibits-streptococcus-suis-induced-inflammation-and-ros-formation-via-tlr2-mapk-nf-%C3%AE%C2%BAb-signaling-in-raw264-7-cells
#3
L Zhang, J Wang, W Xu, Y Sun, J You, H Lu, Y Song, J Wei, L Li
Our previous studies have shown that Magnolol (Mag) improves the symptoms and decreases the levels of cytokines during infection induced by Streptococcus suis (S. suis) in mice. Although some reports show that Mag inhibits lipopolysaccharide-induced inflammatory responses via downregulating mitogen-activated protein kinases (MAPK) and nuclear factor-κB (NF-κB) signaling pathways, the molecular mechanisms underlying Mag-mediated inhibition of S. suis-induced inflammatory responses are poorly understood. Here, RAW264...
March 2018: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/29555480/antidepressant-effects-of-magnolol-in-a-mouse-model-of-depression-induced-by-chronic-corticosterone-injection
#4
Yongtao Bai, Lihua Song, Guoliang Dai, Meijuan Xu, Lijing Zhu, Weidong Zhang, Wen Jing, Wenzheng Ju
Evidence showed that the stress hormone corticosterone (CORT) injection resulted in dysregulation of the hypothalamic-pituitary-adrenal (HPA) axis implicated in major depressive disorder. Magnolol, main constituent identified in the barks of Magnolia officinalis, exerted antidepressant effects in a rat model of depression induced by chronic unpredictable mild stress in previous studies. However, its antidepressant-like effects and mechanisms have never been studied in depression model induced by CORT administration in rodents...
March 16, 2018: Steroids
https://www.readbyqxmd.com/read/29547798/magnolol-promotes-thermogenesis-and-attenuates-oxidative-stress-in-3t3-l1-adipocytes
#5
Hilal Ahmad Parray, Jameel Lone, Jong Pil Park, Jang Won Choi, Jong Won Yun
OBJECTIVE: The aim of this study was to explore the browning and antioxidative effects of magnolol in 3T3-L1 adipocytes, as recruitment of beige-like adipocytes (browning) by natural compounds is being considered as a promising strategy to fight against obesity. METHODS: Magnolol-induced browning effect was evaluated by determining the expression levels of specific marker genes and proteins using real-time polymerase chain reaction and immunoblotting, respectively...
February 5, 2018: Nutrition
https://www.readbyqxmd.com/read/29531825/magnolol-restores-the-activity-of-meropenem-against-ndm-1-producing-escherichia-coli-by-inhibiting-the-activity-of-metallo-beta-lactamase
#6
Shui Liu, Yonglin Zhou, Xiaodi Niu, Tingting Wang, Jiyun Li, Zhongjie Liu, Jianfeng Wang, Shusheng Tang, Yang Wang, Xuming Deng
The emergence of plasmid-mediated New Delhi metallo-β-lactamase-1 (NDM-1) in carbapenem-resistant Gram-negative pathogens is an increasing clinical threat. Here we report the discovery of an NDM-1 inhibitor, magnolol, through enzyme inhibition screening. We showed that magnolol significantly inhibited NDM enzyme activity (IC50  = 6.47 µg/mL), and it restored the activity of meropenem against Escherichia coli ZC-YN3, an NDM-1-producing E. coli isolate, in in vitro antibacterial activity assays. Magnolol lacked direct antibacterial activity, but compared with meropenem alone, it reduced the MICs of meropenem against E...
December 2018: Cell Death Discovery
https://www.readbyqxmd.com/read/29471192/the-effect-of-magnolol-on-ca-2-homeostasis-and-its-related-physiology-in-human-oral-cancer-cells
#7
Shu-Feng Hsieh, Chiang-Ting Chou, Wei-Zhe Liang, Chun-Chi Kuo, Jue-Long Wang, Lyh-Jyh Hao, Chung-Ren Jan
OBJECTIVE: Magnolol, a polyphenol compound from herbal medicines, was shown to alter physiology in various cell models. However, the effect of magnolol on Ca2+ homeostasis and its related physiology in oral cancer cells is unclear. This study examined whether magnolol altered Ca2+ signaling and cell viability in OC2 human oral cancer cells. METHODS: Cytosolic Ca2+ concentrations ([Ca2+ ]i ) in suspended cells were measured by using the fluorescent Ca2+ -sensitive dye fura-2...
February 14, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29467759/magnolol-alleviates-inflammatory-responses-and-lipid-accumulation-by-amp-activated-protein-kinase-dependent-peroxisome-proliferator-activated-receptor-%C3%AE-activation
#8
Ye Tian, Haihua Feng, Lu Han, Lin Wu, Hongming Lv, Bingyu Shen, Zheng Li, Qiaoling Zhang, Guowen Liu
Magnolol (MG) is a kind of lignin isolated from Magnolia officinalis , which serves several different biological functions, such as antifungal, anticancer, antioxidant, and hepatoprotective functions. This study aimed to evaluate the protective effect of MG against oleic acid (OA)-induced hepatic steatosis and inflammatory damage in HepG2 cells and in a tyloxapol (Ty)-induced hyperlipidemia mouse model. Our findings indicated that MG can effectively inhibit OA-stimulated tumor necrosis factor α (TNF-α) secretion, reactive oxygen species generation, and triglyceride (TG) accumulation...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29448168/simultaneous-determination-of-magnolol-and-honokiol-by-amino-acid-ionic-liquid-synchronous-fluorescence-spectrometry
#9
Wei Liu, Xiashi Zhu
A novel method based on amino acid ionic liquids (AAILs) as an additive synchronous fluorescence spectrometry is proposed for simultaneous determination of magnolol (MN) and honokiol (HN) in traditional Chinese medicine Houpu. The overlapping fluorescence spectrum of MN and HN could be completely separated in the AAILs medium. Experiment parameters (the type and concentration of AAILs, pH values and temperature) were discussed. The detection limits of MN and HN reached 1.46ng/mL, 0.92ng/mL and the recovery rates ranged from 98...
February 5, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29433156/enhancement-of-oral-bioavailability-of-magnolol-by-encapsulation-in-mixed-micelles-containing-pluronic-f127-and-l61
#10
Hongxue Shen, Sheng Liu, Pinggang Ding, Lulu Wang, Jianming Ju, Guohui Liang
OBJECTIVES: We aimed to prepare novel magnolol-loaded mixed micelles (MAG-M) by pluronic F127 and L61 to overcome the challenges of magnolol's poor solubility and then further improve its oral bioavailability. METHODS: Magnolol-loaded mixed micelles containing pluronic F127 and L61 were prepared by an organic solvent evaporation method. Physicochemical, transport experiment across Caco-2 cell monolayers and pharmacokinetic studies were performed to characterize MAG-M and to determine the final improvement of the oral bioavailability...
February 12, 2018: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/29425239/magnolol-mediated-regulation-of-plasma-triglyceride-through-affecting-lipoprotein-lipase-activity-in-apolipoprotein-a5-knock-in-mice
#11
Chun-Kai Chang, Xiu-Ru Lin, Yen-Lin Lin, Woei-Horng Fang, Shu-Wha Lin, Sui-Yuan Chang, Jau-Tsuen Kao
Hyperlipidemia is a risk factor of arteriosclerosis, stroke, and other coronary heart disease, which has been shown to correlate with single nucleotide polymorphisms of genes essential for lipid metabolism, such as lipoprotein lipase (LPL) and apolipoprotein A5 (APOA5). In this study, the effect of magnolol, the main active component extracted from Magnolia officinalis, on LPL activity was investigated. A dose-dependent up-regulation of LPL activity, possibly through increasing LPL mRNA transcription, was observed in mouse 3T3-L1 pre-adipocytes cultured in the presence of magnolol for 6 days...
2018: PloS One
https://www.readbyqxmd.com/read/29415009/synthesis-of-magnolol-and-honokiol-derivatives-and-their-effect-against-hepatocarcinoma-cells
#12
Margherita Maioli, Valentina Basoli, Paola Carta, Davide Fabbri, Maria Antonietta Dettori, Sara Cruciani, Pier Andrea Serra, Giovanna Delogu
The hepatocellular carcinoma is one of the most common malignant tumour with high level of mortality rate due to its rapid progression and high resistance to conventional chemotherapies. Thus, the search for novel therapeutic leads is of global interest. Herein, a small set of derivatives of magnolol 1 and honokiol 2, the main components of Magnolia grandiflora and Magnolia obovata, were evaluated in in vitro assay using tumoral hepatocytes. The pro-drug approach was applied as versatile strategy to the improve bioactivity of the compounds by careful transformation of the hydroxyl groups of magnolol 1 and honokiol 2 in suitable ester derivatives...
2018: PloS One
https://www.readbyqxmd.com/read/29381027/magnolol-nanoparticles-exhibit-improved-water-solubility-and-suppress-tnf-%C3%AE-induced-vcam-1-expression-in-endothelial-cells
#13
Chiang-Wen Lee, Stephen Chu-Sung Hu, Feng-Lin Yen, Lee-Fen Hsu, I-Ta Lee, Zih-Chan Lin, Ming-Horng Tsai, Chieh-Liang Huang, Chan-Jung Liang, Yao-Chang Chiang
The expression of the adhesion molecule vascular cell adhesion molecule-1 (VCAM-1) on endothelial cells enables the attachment of leukocytes to the endothelium, which may lead to inflammation and the development of atherosclerosis. Magnolol is a major bioactive compound derived from the plant species Magnolia officinalis. In this study, we synthesized a novel nanoparticle formulation of magnolol to improve its water solubility and physicochemical properties, evaluated its effects on TNF-α-induced VCAM-1 expression in endothelial cells, and determined the signal transduction pathways involved...
March 2017: Journal of Biomedical Nanotechnology
https://www.readbyqxmd.com/read/29355546/magnolol-treatment-attenuates-dextran-sulphate-sodium-induced-murine-experimental-colitis-by-regulating-inflammation-and-mucosal-damage
#14
Peng Shen, Zecai Zhang, Yue He, Cong Gu, Kunpeng Zhu, Shan Li, Yanxin Li, Xiaojie Lu, Jiuxi Liu, Naisheng Zhang, Yongguo Cao
Magnolol, the main and active ingredient of the Magnolia officinalis, has been widely used in traditional prescription to the human disorders. Magnolol has been proved to have several pharmacological properties including anti-bacterial, anti-oxidant and anti-inflammatory activities. However, the effects of magnolol on ulcerative colitis (UC) have not been reported. The aim of this study was to investigate the protective effects and mechanisms of magnolol on dextran sulphate sodium (DSS)-induced colitis in mice...
March 1, 2018: Life Sciences
https://www.readbyqxmd.com/read/29336466/magnolol-protects-against-ischemic-reperfusion-brain-damage-following-oxygen-glucose-deprivation-and-transient-focal-cerebral-ischemia
#15
Sheng-Yang Huang, Shih-Huang Tai, Che-Chao Chang, Yi-Fang Tu, Chih-Han Chang, E-Jian Lee
In the present study, the neuroprotective potential of magnolol against ischemia-reperfusion brain injury was examined via in vivo and in vitro experiments. Magnolol exhibited strong radical scavenging and antioxidant activity, and significantly inhibited the production of interleukin‑6, tumor necrosis factor‑a and nitrite/nitrate (NOX) in lipopolysaccharide-stimulated BV2 and RAW 264.7 cells when applied at concentrations of 10 and 50 µM, respectively. Magnolol (100 µM) also significantly attenuated oxygen‑glucose deprivation‑induced damage in neonatal rat hippocampal slice cultures, when administered up to 4 h following the insult...
April 2018: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29286109/the-protective-effects-of-magnolol-on-acute-trinitrobenzene-sulfonic-acid%C3%A2-induced-colitis-in-rats
#16
Yong Zhang, Li-Tang Fu, Fang Tang
The present study aimed to investigate the protective effects of magnolol on acute 2,4,6-trinitrobenzene sulfonic acid (TNBS)‑induced colitis, and its underlying mechanisms. Experimental colitis was induced by intracolonic administration of TNBS/ethanol into rats. The model rats were randomly assigned into groups: TNBS, magnolol (high, medium and low doses), and salazosulfapyridine (positive control). All intervention regimens were administered by oral gavage, once a day for 7 consecutive days, 24 h after colitis induction...
March 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29277695/magnolol-protects-ctenopharyngodon-idella-kidney-cells-from-apoptosis-induced-by-grass-carp-reovirus
#17
Xiaohui Chen, Kai Hao, Xiaobo Yu, Aiguo Huang, Bin Zhu, Gao-Xue Wang, Fei Ling
Many natural products from medicinal plants are small molecular weight compounds with enormous structural diversity and show various biological activities. Magnolol is a biphenol compound rich in the stem bark of Magnolia officinalis Rehd et Wils., and is able to suppress viral replication in GCRV-infected grass carp (Ctenopharyngodon idella) kidney (CIK) cells in the previous study. In this study, in vivo studies demonstrated that magnolol was efficient to restrain the replication of GCRV and repair the low level of superoxide dismutase and total antioxidant capacity in serum at the non-toxic concentration in vivo...
March 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29259201/magnolol-inhibits-venous-remodeling-in-mice
#18
Hanna Kuk, Caroline Arnold, Ralph Meyer, Markus Hecker, Thomas Korff
Due to gravity the venous vasculature in the lower extremities is exposed to elevated pressure levels which may be amplified by obesity or pregnancy. As a consequence, venules dilate and may be slowly transformed into varicose or spider veins. In fact, chronically elevated venous pressure was sufficient to cause the corkscrew-like enlargement of superficial veins in mice. We hypothesized that biomechanical activation of endothelial cells contributes to this process and investigated the inhibitory capacity of Magnolol in this context - a natural compound that features multiple properties counteracting cellular stress...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29223049/determination-of-blood-concentrations-of-main-active-compounds-in-zi-cao-cheng-qi-decoction-and-their-total-plasma-protein-binding-rates-based-on-hollow-fiber-liquid-phase-microextraction-coupled-with-high-performance-liquid-chromatography
#19
Miaomiao Li, Xuan Chen, Shuang Hu, Runqin Wang, Xiaoli Peng, Xiaohong Bai
Oil-in-salt hollow fiber liquid phase microextraction coupled with high performance liquid chromatography ultraviolet detection (HPLC-UV) was developed for determination of the blood concentrations of the main active compounds, hesperidin, honokiol, shikonin, magnolol, emodin and β,β'-dimethylacrylshikonin, after oral administration of Zi-Cao-Cheng-Qi decoction (ZCCQD) and their total plasma protein binding rates. In the procedure, a hollow fiber segment was immersed in organic solvent to fill the solvent in the fiber lumen and wall pore, and then the fiber was immersed into sodium chloride solution to cover a thin salt membrane on the fiber wall pore filling organic solvent...
January 1, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29102106/magnolol-protects-channel-catfish-from-aeromonas-hydrophila-infection-via-inhibiting-the-expression-of-aerolysin
#20
Jing Dong, Hao Ding, Yongtao Liu, Qiuhong Yang, Ning Xu, Yibin Yang, Xiaohui Ai
Aeromonas hydrophila is a common zoonotic pathogen which can cause several infections both in human and animals, particular aquatic animals. Antibiotics have been widely used in the treatment of A. hydrophila infections, however, the development of resistance has limited the treatment for these infections. There is an urgent need for novel agents and strategies against these infections. Aerolysin, a pore-forming toxin secreted by most pathogenic A. hydrophila, is known to contribute to the pathogenesis of A...
November 2017: Veterinary Microbiology
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