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https://www.readbyqxmd.com/read/28927682/mgf-e-peptide-pretreatment-improves-the-proliferation-and-osteogenic-differentiation-of-bmscs-via-mek-erk1-2-and-pi3k-akt-pathway-under-severe-hypoxia
#1
Yongqiang Sha, Yonggang Lv, Zhiling Xu, Li Yang, Xiaoying Hao, Ruli Afandi
AIMS: Severe hypoxia always inhibits the cell proliferation, osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BMSCs), and hinders bone defect repair. Herein we explored the effects of mechano-growth factor (MGF) E peptide on the proliferation and osteogenic differentiation of BMSCs under severe hypoxia. MATERIALS AND METHODS: CoCl2 was utilized to simulate severe hypoxia. MTS was used to detect cell viability. Cell proliferation was verified through flow cytometry and EdU assay...
September 16, 2017: Life Sciences
https://www.readbyqxmd.com/read/28904317/notch-signaling-partly-regulates-the-osteogenic-differentiation-of-retinoic-acid-treated-murine-induced-pluripotent-stem-cells
#2
Thanaphum Osathanon, Jeeranan Manokawinchoke, Hiroshi Egusa, Prasit Pavasant
Notch signaling is involved in osteogenic differentiation; however, its role differs depending on cell type and differentiation stage. Here, we investigated the involvement of Notch signaling in the osteogenic differentiation of retinoic acid-treated embryoid bodies derived from mouse gingival fibroblast-derived induced pluripotent stem cells (mGF-iPSCs). When cultured in osteogenic media, mGF-iPSCs showed an increase in their expression of osteogenic marker genes and deposited a mineralized matrix. Furthermore, increased levels of mRNA for Notch1, Notch2, and Hey1 were observed...
2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28869034/plasticity-and-function-of-human-skeletal-muscle-in-relation-to-disuse-and-rehabilitation-influence-of-ageing-and-surgery
#3
Charlotte Suetta
In order to study the influence of disuse and aging on skeletal muscle homeostasis, different human models were employed. Effects of chronic disuse were investigated in elderly patients suffering from uni-lateral hip-osteoarthritis, whereas the effect of short-term disuse (4 and 14 days of unilateral lower limb immobilisation) was assessed in healthy young and old individuals. In summary, chronic muscle disuse in the elderly was associated with marked quantitative as well as qualitative neuromuscular impairments...
August 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/28766932/electronic-structure-calculations-of-hydrogen-storage-in-lithium-decorated-metal-graphyne-framework
#4
Sandeep Kumar, Thogluva Janardhanan Dhilip Kumar
Porous metal-graphyne framework (MGF) made up of graphyne linker decorated with lithium has been investigated for hydrogen storage. Applying density functional theory spin-polarized generalized gradient approximation with the Perdew-Burke-Ernzerhof functional containing Grimme's diffusion parameter with double numeric polarization basis set, the structural stability, and physicochemical properties have been analyzed. Each linker binds two Li atoms over the surface of the graphyne linker forming MGF-Li8 by Dewar coordination...
August 30, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28755011/impact-of-chiropractic-manipulation-on-bone-and-skeletal-muscle-of-ovariectomized-rats
#5
A López-Herradón, R Fujikawa, M Gómez-Marín, J P Stedile-Lovatel, F Mulero, J A Ardura, P Ruiz, I Muñoz, P Esbrit, I Mahíllo-Fernández, A Ortega-de Mues
Evidence suggests that chiropractic manipulation might exert positive effects in osteoporotic patients. The aim of this study was to evaluate the effects of chiropractic manipulation on bone structure and skeletal muscle in rats with bone loss caused by ovariectomy (OVX). The 6-month old Sprague-Dawley rats at 10 weeks following OVX or sham operation (Sh) did not suffer chiropractic manipulation (NM group) or were submitted to true chiropractic manipulation using the chiropractic adjusting instrument Activator V(®) three times/week for 6 weeks as follows: Force 1 setting was applied onto the tibial tubercle of the rat right hind limb (TM group), whereas the corresponding left hind limb received a false manipulation (FM group) consisting of ActivatorV(®) firing in the air and slightly touching the tibial tubercle...
July 28, 2017: Calcified Tissue International
https://www.readbyqxmd.com/read/28683812/mechano-growth-factor-a-splice-variant-of-igf-1-promotes-neurogenesis-in-the-aging-mouse-brain
#6
Jason J Tang, Jewel L Podratz, Miranda Lange, Heidi J Scrable, Mi-Hyeon Jang, Anthony J Windebank
Mechano growth factor (MGF) is a splice variant of IGF-1 first described in skeletal muscle. MGF induces muscle cell proliferation in response to muscle stress and injury. In control mice we found endogenous expression of MGF in neurogenic areas of the brain and these levels declined with age. To better understand the role of MGF in the brain, we used transgenic mice that constitutively overexpressed MGF from birth. MGF overexpression significantly increased the number of BrdU+ proliferative cells in the dentate gyrus (DG) of the hippocampus and subventricular zone (SVG)...
July 7, 2017: Molecular Brain
https://www.readbyqxmd.com/read/28660581/lc-ms-based-lipidomics-and-automated-identification-of-lipids-using-the-lipidblast-in-silico-ms-ms-library
#7
Tomas Cajka, Oliver Fiehn
This protocol describes the analysis, specifically the identification, of blood plasma lipids. Plasma lipids are extracted using methyl tert-butyl ether (MTBE), methanol, and water followed by separation and data acquisition of isolated lipids using reversed-phase liquid chromatography coupled to quadrupole/time-of-flight mass spectrometry (RPLC-QTOFMS) operated in MS/MS mode. For lipid identification, acquired MS/MS spectra are converted to the mascot generic format (MGF) followed by library search using the in-silico MS/MS library LipidBlast...
2017: Methods in Molecular Biology
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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 52mgF(-)/kg respectively...
February 16, 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
#20
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
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