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https://www.readbyqxmd.com/read/29433156/enhancement-of-oral-bioavailability-of-magnolol-by-encapsulation-in-mixed-micelles-containing-pluronic-f127-and-l61
#1
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
#2
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
#3
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
#4
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
#5
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...
January 16, 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
#6
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...
January 15, 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
#7
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...
December 20, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29277695/magnolol-protects-ctenopharyngodon-idella-kidney-cells-from-apoptosis-induced-by-grass-carp-reovirus
#8
Xiaohui Chen, Kai Hao, Xiaobo Yu, Aiguo Huang, Bin Zhu, Fei Ling, Gao-Xue Wang
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...
December 22, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29259201/magnolol-inhibits-venous-remodeling-in-mice
#9
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
#10
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...
December 2, 2017: 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
#11
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
https://www.readbyqxmd.com/read/29100031/research-on-major-antitumor-active-components-in-zi-cao-cheng-qi-decoction-based-on-hollow-fiber-cell-fishing-with-high-performance-liquid-chromatography
#12
Miaomiao Li, Shuang Hu, Xuan Chen, Runqin Wang, Xiaohong Bai
Hollow fiber cell fishing (HFCF) based on hepatoma HepG-2 cells, human renal tubular ACHN cells or human cervical carcinoma HeLa cells, coupled with high-performance liquid chromatography (HPLC), was developed and employed to research the major active components in Zi-Cao-Cheng-Qi decoction both in vitro and in vivo. The research showed that the active components, such as hesperidin, magnolol, honokiol, shikonin, emodin and β,β'-dimethylacrylshikonin were screened out by HFCF based on the cancer cells in vitro, furthermore they can be absorbed into blood and reach in the target organ, and some of the active components can be fished by the cells and maintain effective concentrations...
October 28, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29093618/optimal-timing-for-the-oral-administration-of-da-cheng-qi-decoction-based-on-the-pharmacokinetic-and-pharmacodynamic-targeting-of-the-pancreas-in-rats-with-acute-pancreatitis
#13
Yu-Mei Zhang, Lin Zhu, Xian-Lin Zhao, Huan Chen, Hong-Xin Kang, Jian-Lei Zhao, Mei-Hua Wan, Juan Li, Lv Zhu, Wen-Fu Tang
AIM: To identify the optimal oral dosing time of Da-Cheng-Qi decoction (DCQD) in rats with acute pancreatitis (AP) based on the pharmacokinetic and pharmacodynamic parameters. METHODS: First, 24 male Sprague-Dawley rats were divided into a sham-operated group [NG(a)] and three model groups [4hG(a), 12hG(a) and 24hG(a)]. The NG(a) and model groups were administered DCQD (10 g/kg.BW) intragastrically at 4 h, 4 h, 12 h and 24 h, respectively, after AP models induced by 3% sodium taurocholate...
October 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29076612/new-insights-into-sn-38-glucuronidation-evidence-for-the-important-role-of-udp-glucuronosyltranseferase-1a9
#14
Ling Xiao, Liangliang Zhu, Wenjuan Li, Conghu Li, Yunfeng Cao, Guangbo Ge, Xiaoyu Sun
Glucuronidation of SN-38 serves as an important metabolism pathway in determining the toxic effects of irinotecan. The role of UDP-glucoronosyltransferases (UGT) 1A9 in SN-38 glucuronidation pathway is very confusing. This study re-investigates the pathway through testing effects of bovine serum albumin (BSA) and the selective inhibitor on SN-38 glucuronidation in pooled human liver microsomes (HLM) and recombinant UGT1A1/1A9. For UGT1A1, SN-38 glucuronidation was little affected by BSA. Whether in the presence of BSA or not, the reactions both obey Michaelis-Menten kinetics with closed Vmax/Km values...
October 27, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29074435/the-natural-compound-magnolol-affects-growth-biofilm-formation-and-ultrastructure-of-oral-candida-isolates
#15
Jawad Behbehani, Sheikh Shreaz, Mohammad Irshad, Maribassapa Karched
The incidence of oral candidosis has increased in recent years due to the escalation in HIV-infection, cancer treatments, organ transplantation, and diabetes. In addition, corticosteroid use, dentures, and broad-spectrum antibiotic use have also contributed to the problem. Treatment of oral candidosis has continued to be problematic because of the potential toxicity of antifungals in clinical use, and, above all, development of drug resistance among patients. In this study, the antifungal effect of magnolol was investigated against 64 strains of Candida spp...
October 23, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29057944/linked-magnolol-dimer-as-a-selective-ppar%C3%AE-agonist-structure-based-rational-design-synthesis-and-bioactivity-evaluation
#16
Dominik Dreier, Simone Latkolik, Lukas Rycek, Michael Schnürch, Andrea Dymáková, Atanas G Atanasov, Angela Ladurner, Elke H Heiss, Hermann Stuppner, Daniela Schuster, Marko D Mihovilovic, Verena M Dirsch
The nuclear receptors peroxisome proliferator-activated receptor γ (PPARγ) and its hetero-dimerization partner retinoid X receptor α (RXRα) are considered as drug targets in the treatment of diseases like the metabolic syndrome and diabetes mellitus type 2. Effort has been made to develop new agonists for PPARγ to obtain ligands with more favorable properties than currently used drugs. Magnolol was previously described as dual agonist of PPARγ and RXRα. Here we show the structure-based rational design of a linked magnolol dimer within the ligand binding domain of PPARγ and its synthesis...
October 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29057810/synthesis-characterization-and-biological-evaluations-of-1-3-5-triazine-derivatives-of-metformin-cyclization-with-berberine-and-magnolol-in-the-presence-of-sodium-methylate
#17
Han Cao, Shili Liao, Wenjing Zhong, Xuerong Xiao, Jiancheng Zhu, Weimin Li, Xia Wu, Yifan Feng
The novel target products were synthesized in the formation of a triazine ring from berberine, magnolol, and metformin catalyzed by sodium methylate. The structures of products 1-3 were firstly confirmed by extensive spectroscopic analyses and single-crystal X-ray diffraction. The crystal structures of the target product 2 and the intermediate product 7b were reported for the first time. All target products were evaluated for their anti-inflammatory and antidiabetic activities against INS-1 and RAW264.1 cells in vitro and all products showed excellent anti-inflammatory effects and anti-insulin resistance effects...
October 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28946769/magnolol-reduces-renal-ischemia-and-reperfusion-injury-via-inhibition-of-apoptosis
#18
Chia-Yu Tang, Chang-Chi Lai, Po-Hsun Huang, An-Han Yang, Shu-Chiung Chiang, Po-Chao Huang, Kuo-Wei Tseng, Cheng-Hsiung Huang
Magnolol, a constituent of the bark of Magnolia officinalis, has been reported to decrease myocardial stunning and infarct size. In this study, we investigated whether magnolol can reduce renal ischemia and reperfusion (I/R) injury. Renal I/R, induced by a 60-min occlusion of bilateral renal arteries and a 24-h reperfusion, significantly increased blood urea nitrogen (BUN) and creatinine levels, and caused histological damage to the kidneys of rats. Apoptosis, as evaluated by terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) staining and caspase-3 activation, was significantly increased in the kidneys...
2017: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/28919715/in-vitro-inhibitory-activities-of-magnolol-against-candida-spp
#19
Peiru Zhou, Jingya Fu, Hong Hua, Xiaosong Liu
Candida spp. cause various infections involving the skin, mucosa, deep tissues, and even life-threatening candidemia. They are regarded as an important pathogen of nosocomial bloodstream infection, with a high mortality rate. As a result of prolonged exposure to azoles, the therapeutic failure associated with azoles resistance has become a serious challenge in clinical situations. Therefore, novel, alternative antifungals are required urgently. In the present study, the CLSI M-27A broth microdilution method and the 2,3-Bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) reduction assay were used to evaluate the antifungal effects of magnolol against various standard Candida strains in planktonic mode and biofilm formation, respectively...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28919305/magnolol-protects-pancreatic-%C3%AE-cells-against-methylglyoxal-induced-cellular-dysfunction
#20
Kwang Sik Suh, Suk Chon, Woon-Won Jung, Eun Mi Choi
Chronic hyperglycemia aggravates insulin resistance, in part due to increased formation of advanced glycation end-products (AGEs). Methylglyoxal (MG), a major precursor of AGEs, accumulates abnormally in various tissues and organs and participates in oxidative damage. We investigated the insulinotropic benefits of magnolol, a hydroxylated biphenyl compound isolated from Magnolia officinalis, in pancreatic β-cells exposed to MG in vitro. When exposed to cytotoxic levels of MG for 48 h, RIN-m5F β-cells exhibited a significant loss of viability and impaired insulin secretion, whereas pretreatment with magnolol protected against MG-induced cell death and decreased insulin secretion...
November 1, 2017: Chemico-biological Interactions
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