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https://www.readbyqxmd.com/read/28621744/in-vitro-comparative-study-of-the-inhibitory-effects-of-mangiferin-and-its-aglycone-norathyriol-towards-udp-glucuronosyl-transferase-ugt-isoforms
#1
Dan Sun, Chun-Ze Zhang, Rui-Xue Ran, Yun-Feng Cao, Zuo Du, Zhi-Wei Fu, Chun-Ting Huang, Zhen-Ying Zhao, Wei-Hua Zhang, Zhong-Ze Fang
Mangiferin (MGF), the predominant constituent of extracts of the mango plant Mangifera Indica L., has been investigated extensively because of its remarkable pharmacological effects. In vitro recombinant UGTs-catalyzed glucuronidation of 4-methylumbelliferone (4-MU) was used to investigate the inhibition of mangiferin and aglycone norathyriol towards various isoforms of UGTs in our study, which evaluated the inhibitory capacity of MGF and its aglycone norathyriol (NTR) towards UDP-glucuronosyltransferase (UGT) isoforms...
June 16, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28599103/the-use-of-mechano-growth-factor-to-prevent-cartilage-degeneration-in-knee-osteoarthritis
#2
Yang Song, Kang Xu, Can Yu, Lili Dong, Peixing Chen, Yonggang Lv, Martin Y M Chiang, Linhao Li, Wanqian Liu, Li Yang
Previous studies have attached more importance to growth factors in treating cartilage degeneration and osteoarthritis (OA). Here, the capability of mechano growth factor-C24E (MGF) to prevent osteoarthritic cartilage degeneration was evaluated in vitro and in vivo. Using in vitro cultured human OA chondrocytes treated with 10-60 ng/ml MGF for 12 h, we detected the cell proliferation, migration and anabolism of OA chondrocytes. The unfolded protein response (UPR) and the proteins characteristic of OA pathology, such as TGF-β, Smad3 and HIF-2α of OA chondrocytes, were also detected by western blotting...
June 9, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28580546/dye-removal-of-ar27-with-enhanced-degradation-and-power-generation-in-a-microbial-fuel-cell-using-bioanode-of-treated-clinoptilolite-modified-graphite-felt
#3
Seyedeh Nazanin Kardi, Norahim Ibrahim, Ghasem Najafpour Darzi, Noor Aini Abdul Rashid, José Villaseñor
This work studied the performance of a laboratory-scale microbial fuel cell (MFC) using a bioanode that consisted of treated clinoptilolite fine powder coated onto graphite felt (TC-MGF). The results were compared with another similar MFC that used a bare graphite felt (BGF) bioanode. The anode surfaces provided active sites for the adhesion of the bacterial consortium (NAR-2) and the biodegradation of mono azo dye C.I. Acid Red 27. As a result, bioelectricity was generated in both MFCs. A 98% decolourisation rate was achieved using the TC-MGF bioanode under a fed-batch operation mode...
June 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28566908/the-effects-of-multi-growth-factors-containing-cream-on-post-thyroidectomy-scars-a-preliminary-study
#4
Sungsik Shin, Jung U Shin, Youngin Lee, Woong Youn Chung, Kee-Hyun Nam, Tae Gwang Kwon, Ju Hee Lee
BACKGROUND: Growth factors play important roles in wound healing. However, the evidence for the effects of growth factors on post-thyroidectomy scars is limited. OBJECTIVE: We performed a prospective study to assess the preventive and therapeutic effect of a multi-growth factor (MGF)-containing cream on post-thyroidectomy scars. METHODS: Twenty-one patients with thyroidectomy scars applied MGF cream twice a day. We assessed the changes in erythema, pigmentation, skin elasticity, and skin hydration status using the erythema index, melanin index, cutometer, and corneometer, respectively...
June 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28553731/mgf-e-peptide-pretreatment-improves-collagen-synthesis-and-cell-proliferation-of-injured-human-acl-fibroblasts-via-mek-erk1-2-signaling-pathway
#5
Yongqiang Sha, Ruli Afandi, Bingbing Zhang, Li Yang, Yonggang Lv
Injured anterior cruciate ligament (ACL) is hard to heal due to the poor proliferative potential of ACL fibroblasts. To verify whether mechano-growth factor (MGF) E peptide can restore the cell proliferation of injured ACL fibroblasts, ACL fibroblasts pretreated with MGF E peptide were subjected to injurious stretch and the outcomes were evaluated at 0 and 24 h. After injured, the type III collagen synthesis was increased at 0 h while inhibited at 24 h. The matrix metalloproteinase-2 (MMP-2) activity/expression was up-regulated, but the cell proliferation was inhibited...
February 2017: Growth Factors
https://www.readbyqxmd.com/read/28525361/engineering-of-biodegradable-magnesium-alloy-scaffolds-to-stabilize-biological-myocardial-grafts
#6
Tobias Schilling, Michael Bauer, Christian Biskup, Axel Haverich, Thomas Hassel
OBJECTIVE: Regenerative bioprostheses are being investigated for replacement of dysfunctional myocardium worldwide. The aim of this study was to develop a degradable magnesium structure to mechanically support the delicate biological grafts during the early remodeling phase. METHODS: Sheets of magnesium alloys (LA33, LA63 and AX30) were manufactured into scaffolds by abrasive water jet cutting. Thereafter, their surface properties, corrosion kinetics, and breakage behaviors were investigated...
May 19, 2017: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/28497355/the-generation-of-dehydroalanine-residues-in-protonated-polypeptides-ion-ion-reactions-for-introducing-selective-cleavages
#7
Zhou Peng, Jiexun Bu, Scott A McLuckey
We examine a gas-phase approach for converting a subset of amino acid residues in polypeptide cations to dehydroalanine (Dha). Subsequent activation of the modified polypeptide ions gives rise to specific cleavage N-terminal to the Dha residue. This process allows for the incorporation of selective cleavages in the structural characterization of polypeptide ions. An ion/ion reaction within the mass spectrometer between a multiply protonated polypeptide and the sulfate radical anion introduces a radical site into the multiply protonated polypeptide reactant...
May 11, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28471324/the-structure-function-relationships-of-insulin-like-growth-factor-1-ec-in-c2c12-cells
#8
Qian Yi, Jianguo Feng, Ling He, Rongxue Wan, Hui Zeng, Li Yang, Shiyong Wu, Liling Tang
Insulin-like growth factor 1 (IGF1) is a crucial growth factor, that regulates skeletal muscles development during cell growth and repair. Recently, its alternative splicing variant, named IGF1Ec, also named mechano-growth factor (MGF), has gained attentions as a new damage repair factor. However, the structure-function relationships of IGF1Ec have not been fully clarified due to contradictory reports. In this study, we systematically investigated physiologic responses of C2C12 muscle cells to IGF1Ec, IGF1 and MGF E peptide...
May 4, 2017: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/28440368/mangiferin-functionalized-radioactive-gold-nanoparticles-mgf-198-aunps-in-prostate-tumor-therapy-green-nanotechnology-for-production-in-vivo-tumor-retention-and-evaluation-of-therapeutic-efficacy
#9
A Y Al-Yasiri, M Khoobchandani, C S Cutler, L Watkinson, T Carmack, C J Smith, M Kuchuk, S K Loyalka, A B Lugão, K V Katti
We report here an innovative feature of green nanotechnology-focused work showing that mangiferin-a glucose functionalized xanthonoid, found in abundance in mango peels-serves dual roles of chemical reduction and in situ encapsulation, to produce gold nanoparticles with optimum in vivo stability and tumor specific characteristics. The interaction of mangiferin with a Au-198 gold precursor affords MGF-(198)AuNPs as the beta emissions of Au-198 provide unique advantages for tumor therapy while gamma rays are used for the quantitative estimation of gold within the tumors and various organs...
April 25, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28362741/microresonator-stabilized-extended-cavity-diode-laser-for-supercavity-frequency-stabilization
#10
Jinkang Lim, Anatoliy A Savchenkov, Andrey B Matsko, Shu-Wei Huang, Lute Maleki, Chee Wei Wong
We demonstrate a simple, compact, and cost-effective laser noise reduction method for stabilizing an extended-cavity diode laser to a 3×10<sup>5</sup> finesse mirror Fabry-Perot (F-P) cavity, corresponding to a resonance linewidth of 10 kHz, by using a crystalline MgF<sub>2</sub> whispering gallery mode microresonator. The laser linewidth is reduced to sub-kilohertz such that a stable Pound-Drever-Hall error signal is built up. The wavelength of the pre-stabilized laser is tunable within a large bandwidth covering the high-reflection mirror coating of an F-P supercavity...
April 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28344830/exploring-and-validating-physicochemical-properties-of-mangiferin-through-gastroplus-%C3%A2-software
#11
Rajneet Kaur Khurana, Ranjot Kaur, Manninder Kaur, Rajpreet Kaur, Jasleen Kaur, Harpreet Kaur, Bhupinder Singh
AIM: Mangiferin (Mgf), a promising therapeutic polyphenol, exhibits poor oral bioavailability. Hence, apt delivery systems are required to facilitate its gastrointestinal absorption. The requisite details on its physicochemical properties have not yet been well documented in literature. Accordingly, in order to have explicit insight into its physicochemical characteristics, the present work was undertaken using GastroPlus™ software. RESULTS: Aqueous solubility (0...
March 2017: Future Science OA
https://www.readbyqxmd.com/read/28214583/remediation-of-fluoride-from-drinking-water-using-magnetic-iron-oxide-coated-hydrotalcite-chitosan-composite
#12
Kalimuthu Pandi, Soodamani Periyasamy, Natrayasamy Viswanathan
The present study was performed to examine the probability of magnetic iron oxide fabricated hydrotalcite/chitosan (Fe3O4@HTCS) composite for the removal of excess fluoride content from drinking water. The developed Fe3O4@HTCS composite not only demonstrate the good separation ability but also display an extreme enhanced defluoridation capacity (DC) when compared to other base components and composite. The DCs of Fe3O4@HTCS composite, Fe3O4@HT composite, Fe3O4, HT and CS was found to be 5032, 3041, 1050, 1030 and 52 mgF(-)/kg respectively...
February 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28183052/electronic-structure-of-the-polar-molecules-xf-x-be-mg-ca-with-rovibrational-and-dipole-moment-calculations
#13
Nayla El-Kork, Nariman Abu El Kher, Farah Korjieh, John Anwar Chtay, Mahmoud Korek
A theoretical investigation for the feasibility of laser-cooling is performed through the calculation of accurate potential energy curves, static dipole moments, spectroscopic constants and rovibrational calculations for 24, 26 and 27 highly excited electronic states for BeF, CaF and MgF molecules respectively. In order to understand the electronic structure of their lowest lying electronic states and to learn the characteristic behavior of their chemical bonding, a high level of calculation is realized by using the complete active space self-consistent field (CASSCF) with multi-reference configuration interaction MRCI method including single and double excitations with Davidson correction (+Q) for the three considered molecules...
April 15, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28146515/soliton-dual-frequency-combs-in-crystalline-microresonators
#14
N G Pavlov, G Lihachev, S Koptyaev, E Lucas, M Karpov, N M Kondratiev, I A Bilenko, T J Kippenberg, M L Gorodetsky
We present a novel compact dual-comb source based on a monolithic optical crystalline MgF<sub>2</sub> multi-resonator stack. The coherent soliton combs generated in the two microresonators of the stack with the repetition rate of 12.1 GHz and difference of 1.62 MHz provided after heterodyning a 300 MHz wide radio frequency comb. An analogous system can be used for dual-comb spectroscopy, coherent LIDAR applications, and massively parallel optical communications.
February 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28125630/fluoride-regulate-osteoblastic-transforming-growth-factor-%C3%AE-1-signaling-by-mediating-recycling-of-the-type-i-receptor-alk5
#15
Chen Yang, Yan Wang, Hui Xu
This study aimed to preliminary investigate the role of activin receptor-like kinase (ALK) 5 as one of TGF-βR1 subtypes in bone turnover and osteoblastic differentiation induced by fluoride. We analyzed bone mineral density and the expression of genes related with transforming growth factor-β1(TGF-β1) signaling and bone turnover in rats treated by different concentrations of fluoride with or without SB431542 in vivo. Moreover, MTT assay, alkaline phosphatase staining, RT-PCR, immunocytochemical analysis and western blot analysis were used to detect the influence on bone marrow stem cells (BMSC) after stimulating by varying concentration of fluoride with or without SB431542 in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28035768/detection-and-in-vitro-metabolism-of-the-confiscated-peptides-bpc-157-and-mgf-r23h
#16
H D Cox, G D Miller, D Eichner
A new peptide, body protecting compound (BPC), BPC 157, and a variant of mechano-growth factor (MGF), MGF R23H, were identified in confiscated vials. BPC 157 has the amino acid sequence, GEPPPGKPADDAGLV, and is currently under investigation for the promotion of healing and recovery in a variety of tissues. In vitro metabolism experiments in plasma demonstrate that MGF R23H has good stability and should be detectable in urine, while BPC 157 forms a stable metabolite that should be detectable in urine. A weak cation exchange solid phase extraction method was validated for detection of BPC 157 in urine...
December 29, 2016: Drug Testing and Analysis
https://www.readbyqxmd.com/read/28025072/enhancing-biopharmaceutical-attributes-of-phospholipid-complex-loaded-nanostructured-lipidic-carriers-of-mangiferin-systematic-development-characterization-and-evaluation
#17
Rajneet Kaur Khurana, Arvind K Bansal, Sarwar Beg, Andrea Julie Burrow, O P Katare, Kamalinder K Singh, Bhupinder Singh
Mangiferin (Mgf), largely expressed out from the leaves and stem bark of Mango, is a potent antioxidant. However, its in vivo activity gets tremendously reduced owing to poor aqueous solubility and inconsistent gastrointestinal absorption, high hepatic first-pass metabolism and high P-gp efflux. The current research work, therefore, was undertaken to overcome the biopharmaceutical hiccups by developing the Mgf-phospholipid complex (PLCs) loaded in nanostructured lipidic carriers (NLCs). The PLCs and NLCs were prepared using refluxing, solvent evaporation and hot emulsification technique, respectively with three molar ratios of Mgf and Phospholipon 90G, i...
February 25, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/27958443/tri-band-transparent-conductive-coating-of-indium-tin-oxide
#18
Huafei Du, Mingyun Lv, Junhui Meng, Weiyu Zhu
A tri-band transparent conductive indium tin oxide (In<sub>2</sub>O<sub>3</sub>:Sn, ITO) film for the visible, near-infrared (NIR) and mid-infrared (MIR) was deposited on a sapphire substrate by radio frequency (RF) magnetron sputtering. Deposition parameters, including RF power, substrate temperature, and oxygen flow rate, were optimized to improve the optical property without reducing the conductivity of the film by maximizing the Hall mobility and minimizing the carrier concentration...
December 1, 2016: Applied Optics
https://www.readbyqxmd.com/read/27906310/harmonization-of-chaos-into-a-soliton-in-kerr-frequency-combs
#19
V E Lobanov, G V Lihachev, N G Pavlov, A V Cherenkov, T J Kippenberg, M L Gorodetsky
Dissipative Kerr solitons have paved the way to broadband and fully coherent optical frequency combs in microresonators. Here, we demonstrate numerically that slow frequency tuning of the pump laser in conjunction with phase or amplitude modulation corresponding to the free spectral range of the microresonator, provides reliable convergence of an initially excited chaotic comb state to a single dissipative Kerr soliton (DKS) state. The efficiency of this approach depends on both frequency tuning speed and modulation depth...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27898012/hydrodechlorination-of-tetrachloromethane-over-palladium-catalysts-supported-on-mixed-mgf%C3%A2-mgo-carriers
#20
Magdalena Bonarowska, Maria Wojciechowska, Maciej Zieliński, Angelika Kiderys, Michał Zieliński, Piotr Winiarek, Zbigniew Karpiński
Pd/MgO, Pd/MgF₂ and Pd/MgO-MgF₂ catalysts were investigated in the reaction of CCl₄ hydrodechlorination. All the catalysts deactivated in time on stream, but the degree of deactivation varied from catalyst to catalyst. The MgF₂-supported palladium with relatively large metal particles appeared the best catalyst, characterized by good activity and selectivity to C₂-C₅ hydrocarbons. Investigation of post-reaction catalyst samples allowed to find several details associated with the working state of hydrodechlorination catalysts...
November 25, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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