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Hussein S, Hasan MM, Saeed AA, Tolba AM, Sameh R, Abdelghany EMA. Effect of human umbilical cord blood-mesenchymal stem cells on cisplatin-induced nephrotoxicity in rats. Mol Biol Rep 2024; 51:234. [PMID: 38282086 DOI: 10.1007/s11033-023-08958-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/06/2023] [Indexed: 01/30/2024]
Abstract
BACKGROUND Cisplatin-containing regimen is an effective treatment for several malignancies. However, cisplatin is an important cause of nephrotoxicity. So, many trials were performed to transplant stem cells systemically or locally to control cisplatin-induced nephrotoxicity. Stem cell therapeutic effect may be dependent on the regulation of inflammation and oxidant stress. AIM To investigate the effect of human umbilical cord blood-mesenchymal stem cells (hUCB-MSCs) on the histological structure, the oxidant stress, and the inflammatory gene expression in an experimental model of cisplatin-induced nephrotoxicity in rats. METHOD The rats were divided into 6 equal groups (each of 10 rats): Group I included normal rats that received no treatment. Group II included healthy rats that received IV hUCB-MSCs. Group III included untreated cisplatin-induced nephrotoxic rats. Group IV included cisplatin-induced nephrotoxic rats that received magnesium (Mg) injections after injury. Group V was injected with hUCB-MSCs after injury. Group VI received both Mg and hUCB-MSCs after injury. In tissue homogenates, reduced glutathione (GSH), superoxide dismutase (SOD), and malondialdehyde (MDA) activities were measured. Quantitative real-time-polymerase chain reaction (qRT-PCR) was performed to assess iNOS, TLR4, and NF-kB gene expression. Hematoxylin and eosin (H&E) staining was performed to study the histological structure of the kidney. Immunohistochemical staining of iNOS and NF-κB was performed, as well. RESULTS Disturbed kidney functions, oxidative status, and histological structure were seen in the rats that received cisplatin. Treated groups showed improvements in kidney functions, oxidative status, and histological structure, particularly in the combined treatment group. CONCLUSION In the cisplatin-induced nephrotoxicity model, hUCB-MSCs could improve the functional and morphological kidney structure by modulation of oxidative and inflammatory status.
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Affiliation(s)
- Samia Hussein
- Medical Biochemistry and Molecular Biology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt.
| | - Mai M Hasan
- Physiology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Abeer A Saeed
- Physiology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Asmaa M Tolba
- Anatomy and Embryology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Reham Sameh
- Pathology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Eman M A Abdelghany
- Anatomy and Embryology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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2
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Nakamura T, Yoshino M, Toyabe T, Yasuda A. Breakdown Characteristics of GaN DMISFETs Fabricated via Mg, Si and N Triple Ion Implantation. Micromachines (Basel) 2024; 15:147. [PMID: 38258266 PMCID: PMC10818990 DOI: 10.3390/mi15010147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/10/2024] [Accepted: 01/17/2024] [Indexed: 01/24/2024]
Abstract
Mg-ion-implanted layers in a GaN substrate after annealing were investigated. Implanted Mg atoms precipitated along the edges of crystal defects were observed using 3D-APT. The breakdown characteristics of a GaN double-diffused vertical MISFET (DMISFET) fabricated via triple ion implantation are presented. A DMISFET with Si-ion-implanted source regions was formed in Mg-ion-implanted p-base regions, which were isolated from adjacent devices by N-ion-implanted edge termination regions. A threshold voltage of -0.5 V was obtained at a drain voltage of 0.5 V for the fabricated vertical MISFET with an estimated Mg surface concentration of 5 × 1018 cm-3. The maximum drain current and maximum transconductance in a saturation region of Vds = 100 V were 2.8 mA/mm and 0.5 mS/mm at a gate voltage of 15 V, respectively. The breakdown voltage in the off-state was 417 V. The breakdown points were determined by the boundary regions between the N- and Mg-implanted regions. By improving heat annealing methods, ion-implanted GaN DMISFETs can be a promising candidate for future high-voltage and high-power applications.
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Affiliation(s)
- Tohru Nakamura
- Research Center for Micro-Nano Technology, Hosei University, Tokyo 184-0003, Japan;
| | - Michitaka Yoshino
- Research Center for Micro-Nano Technology, Hosei University, Tokyo 184-0003, Japan;
| | - Toru Toyabe
- Faculty of Engineering, Toyo University, Saitama 350-8585, Japan
| | - Akira Yasuda
- Department of Electrical and Electronic Engineering, Faculty of Science and Engineering, Hosei University, Tokyo 184-8584, Japan
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Wang X, Shen P, Gu N, Shao Y, Lu M, Tang C, Wang C, Chu C, Xue F, Bai J. Dual Mg-Reinforced PCL Membrane with a Janus Structure for Vascularized Bone Regeneration and Bacterial Elimination. ACS Biomater Sci Eng 2024; 10:537-549. [PMID: 38065085 DOI: 10.1021/acsbiomaterials.3c01360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Commercially available guided bone regeneration (GBR) membranes often exhibit limited mechanical properties or bioactivity, leading to poor performance in repairing bone defects. To surmount this limitation, we developed a Janus structural composite membrane (Mg-MgO/PCL) reinforced by dual Mg (Mg sheets and MgO NPs) by using a combined processing technique involving casting and electrospinning. Results showed that the addition of Mg sheets and MgO NPs enhanced the mechanical properties of the composite membrane for osteogenic space maintenance, specifically tensile strength (from 10.2 ± 1.2 to 50.3 ± 4.5 MPa) and compression force (from 0 to 0.94 ± 0.09 N mm-1), through Mg sheet reinforcement and improved crystallization. The dense cast side of the Janus structure membrane displayed better fibroblast barrier capacity than a single fiber structure; meanwhile, the PCL matrix protected the Mg sheet from severe corrosion due to predeformation. The porous microfibers side supported preosteoblast cell adhesion, enhanced osteogenesis, and angiogenesis in vitro, through the biomimetic extracellular matrix and sustainable Mg2+ release. Furthermore, the Mg-MgO/PCL membrane incorporating 2 wt % MgO NPs exhibited remarkable antimicrobial properties, inducing over 88.75% apoptosis in Staphylococcus aureus. An in vivo experiment using the rat skull defect model (Φ = 5 mm) confirmed that the Mg-MgO/PCL membrane significantly improved new bone formation postsurgery. Collectively, our investigation provides valuable insights into the design of multifunctional membranes for clinical oral GBR application.
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Affiliation(s)
- Xianli Wang
- School of Materials Science and Engineering, Southeast University, Jiangning, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Jiangning, Nanjing 211189, Jiangsu, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou 215000, China
| | - Peiqi Shen
- School of Materials Science and Engineering, Southeast University, Jiangning, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Jiangning, Nanjing 211189, Jiangsu, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou 215000, China
| | - Nannan Gu
- School of Materials Science and Engineering, Southeast University, Jiangning, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Jiangning, Nanjing 211189, Jiangsu, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou 215000, China
| | - Yi Shao
- School of Materials Science and Engineering, Southeast University, Jiangning, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Jiangning, Nanjing 211189, Jiangsu, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou 215000, China
| | - Mengmeng Lu
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Chunbo Tang
- Department of Oral Implantology, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing 210029, China
| | - Cheng Wang
- School of Materials Science and Engineering, Southeast University, Jiangning, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Jiangning, Nanjing 211189, Jiangsu, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou 215000, China
| | - Chenglin Chu
- School of Materials Science and Engineering, Southeast University, Jiangning, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Jiangning, Nanjing 211189, Jiangsu, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou 215000, China
| | - Feng Xue
- School of Materials Science and Engineering, Southeast University, Jiangning, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Jiangning, Nanjing 211189, Jiangsu, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou 215000, China
| | - Jing Bai
- School of Materials Science and Engineering, Southeast University, Jiangning, Nanjing 211189, Jiangsu, China
- Jiangsu Key Laboratory for Advanced Metallic Materials, Jiangning, Nanjing 211189, Jiangsu, China
- Institute of Medical Devices (Suzhou), Southeast University, Suzhou 215000, China
- Jiangsu Key Laboratory for Light Metal Alloys, Nanjing 211224, Jiangsu, China
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Bauer L, Antunović M, Ivanković H, Ivanković M. Biomimetic Scaffolds Based on Mn 2+-, Mg2+-, and Sr 2+-Substituted Calcium Phosphates Derived from Natural Sources and Polycaprolactone. Biomimetics (Basel) 2024; 9:30. [PMID: 38248604 PMCID: PMC10813741 DOI: 10.3390/biomimetics9010030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/18/2023] [Accepted: 12/25/2023] [Indexed: 01/23/2024] Open
Abstract
The occurrence of bone disorders is steadily increasing worldwide. Bone tissue engineering (BTE) has emerged as a promising alternative to conventional treatments of bone defects, developing bone scaffolds capable of promoting bone regeneration. In this research, biomimetic scaffolds based on ion-substituted calcium phosphates, derived from cuttlefish bone, were prepared using a hydrothermal method. To synthesize Mn2+-substituted scaffolds, three different manganese concentrations (corresponding to 1, 2.5, and 5 mol% Mn substitutions for Ca into hydroxyapatite) were used. Also, syntheses with the simultaneous addition of an equimolar amount (1 mol%) of two (Mg2+ and Sr2+) or three ions (Mn2+, Mg2+, and Sr2+) were performed. A chemical, structural, and morphological characterization was carried out using X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. The effects of the ion substitutions on the lattice parameters, crystallite sizes, and fractions of the detected phases were discussed. Multi-substituted (Mn2+, Mg2+, and Sr2+) scaffolds were coated with polycaprolactone (PCL) using simple vacuum impregnation. The differentiation of human mesenchymal stem cells (hMSCs), cultured on the PCL-coated scaffold, was evaluated using histology, immunohistochemistry, and reverse transcription-quantitative polymerase chain reaction analyses. The expression of collagen I, alkaline phosphatase, and dentin matrix protein 1 was detected. The influence of PCL coating on hMSCs behavior is discussed.
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Affiliation(s)
- Leonard Bauer
- Faculty of Chemical Engineering and Technology, University of Zagreb, Trg Marka Marulića 19, HR-10001 Zagreb, Croatia
| | - Maja Antunović
- Faculty of Chemical Engineering and Technology, University of Zagreb, Trg Marka Marulića 19, HR-10001 Zagreb, Croatia
| | - Hrvoje Ivanković
- Faculty of Chemical Engineering and Technology, University of Zagreb, Trg Marka Marulića 19, HR-10001 Zagreb, Croatia
| | - Marica Ivanković
- Faculty of Chemical Engineering and Technology, University of Zagreb, Trg Marka Marulića 19, HR-10001 Zagreb, Croatia
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Yang L, Hu W, Pei F, Du B, Tong Z, Mu X, Xia M, Wang F, Liu B. Novel dual-emission fluorescence imprinted sensor based on Mg, N-CDs and metal-organic frameworks for rapid and smart detection of 2, 4, 6-trinitrophenol. Talanta 2024; 266:125115. [PMID: 37657376 DOI: 10.1016/j.talanta.2023.125115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/14/2023] [Accepted: 08/22/2023] [Indexed: 09/03/2023]
Abstract
Rapid and real-time detection of 2, 4, 6-trinitrophenol (TNP) is of great importance for the living environment and human health. Herein, we constructed an innovative ratiometric fluorescence imprinted sensor with fast response and high selectivity based on magnesium and nitrogen co-doped carbon dots (Mg, N-CDs) and chromium telluride quantum dots (r-CdTe) self-assembled in zirconium-based metal organic frameworks (UiO-66) combined with imprinted polymers for the detection of TNP. In the protocol, the introduction of UiO-66 with large specific surface area and porosity using as carrier material significantly enhanced the mass transfer rate, which improved the sensitivity of the Mg, N-CDs/r-CdTe@UiO-66@MIP (LHU@MIP). And the Mg, N-CDs with high quantum yields and r-CdTe were selected as fluorescence emitting elements to yield fluorescence signal, achieving signal amplification. The dual-channel strategy enabled the sensor to not only display a fast fluorescence response, but also generate a dual-response signal under the action of internal filtering effect (IFE). Combining these advantages, the LHU@MIP had a wide linear range (1-100 μM), good detection sensitivity (0.56 μM), and a distinct color change (from blue to pink). Meanwhile, for accurate on-site analysis, we designed a portable smart sensing platform with a color recognizer application. The smartphone enabled visual sensing of TNP by capturing fluorescent images and converting them into digital values. More importantly, the platform was successfully utilized for the analysis of TNP in the simulated actual samples with considerable results. Therefore, the developed platform was characterized by low cost, portability, ideal specificity, and provided a strategy for on-site monitoring of TNP.
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Affiliation(s)
- Lidong Yang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China; State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Wei Hu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Fubin Pei
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China; State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Bin Du
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Zhaoyang Tong
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Xihui Mu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Mingzhu Xia
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China
| | - Fengyun Wang
- School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, China.
| | - Bing Liu
- State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China.
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Lasota A, Kuczumow A, Gorzelak M, Blicharski T, Niezbecka-Zając J, Turżańska K, Szabelska A, Łobacz M, Wiszumirska K, Wieruszewski M, Jarzębski M, Jabłoński M. Contribution to Knowledge on Bioapatites: Does Mg Level Reflect the Organic Matter and Water Contents of Enamel? Int J Mol Sci 2023; 24:15974. [PMID: 37958956 PMCID: PMC10648067 DOI: 10.3390/ijms242115974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 10/26/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023] Open
Abstract
The matter constituting the enamels of four types of organisms was studied. The variability of the ions was presented in molar units. It was proven that the changes in water contents of the enamel are significantly positively related to changes in Mg; inversely, there is also a strong connection with changes in Ca and P, the main components of bioapatite. The variability in the organic matter has the same strong and positive characteristics and is also coupled with changes in Mg contents. Amelogenins in organic matter, which synthesize enamel rods, likely have a role in adjusting the amount of Mg, thus establishing the amount of organic matter and water in the whole enamel; this adjustment occurs through an unknown mechanism. Ca, P, Mg, and Cl ions, as well as organic matter and water, participate in the main circulation cycle of bioapatites. The selection of variations in the composition of bioapatite occurs only along particular trajectories, where the energy of transformation linearly depends on the following factors: changes in the crystallographic d parameter; the increase in the volume, V, of the crystallographic cell; the momentum transfer, which is indirectly expressed by ΔsinΘ value. To our knowledge, these findings are novel in the literature. The obtained results indicate the different chemical and crystallographic affinities of the enamels of selected animals to the human ones. This is essential when animal bioapatites are transformed into dentistic or medical substitutes for the hard tissues. Moreover, the role of Mg is shown to control the amount of water in the apatite and in detecting organic matter in the enamels.
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Affiliation(s)
- Agnieszka Lasota
- Department of Maxillary Orthopaedics, Medical University of Lublin, Chodźki 6, 20-093 Lublin, Poland;
| | | | - Mieczysław Gorzelak
- Clinic of Rehabilitation and Orthopedics, Medical University of Lublin, 20-090 Lublin, Poland; (M.G.); (T.B.); (J.N.-Z.); (K.T.); (M.J.)
| | - Tomasz Blicharski
- Clinic of Rehabilitation and Orthopedics, Medical University of Lublin, 20-090 Lublin, Poland; (M.G.); (T.B.); (J.N.-Z.); (K.T.); (M.J.)
| | - Joanna Niezbecka-Zając
- Clinic of Rehabilitation and Orthopedics, Medical University of Lublin, 20-090 Lublin, Poland; (M.G.); (T.B.); (J.N.-Z.); (K.T.); (M.J.)
| | - Karolina Turżańska
- Clinic of Rehabilitation and Orthopedics, Medical University of Lublin, 20-090 Lublin, Poland; (M.G.); (T.B.); (J.N.-Z.); (K.T.); (M.J.)
| | - Anna Szabelska
- Department of Dental Techniques with the Lab of Modern Technologies, Medical University of Lublin, Chodźki 6, 20-093 Lublin, Poland;
| | - Michał Łobacz
- Chair and Department of Oral Surgery, Medical University of Lublin, Chodźki 6, 20-093 Lublin, Poland;
| | - Karolina Wiszumirska
- Institute of Quality Science, Department of Industrial Products and Packaging Quality, Poznan University of Economics and Business, Al. Niepodległosci 10, 61-875 Poznan, Poland;
| | - Marek Wieruszewski
- Department Mechanical Wood Technology, Faculty of Forestry and Wood Technology, Poznan University of Life Sciences, Wojska Polskiego 28, 60-637 Poznan, Poland;
| | - Maciej Jarzębski
- Department of Physics and Biophysics, Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Wojska Polskiego 38/42, 60-637 Poznan, Poland
| | - Mirosław Jabłoński
- Clinic of Rehabilitation and Orthopedics, Medical University of Lublin, 20-090 Lublin, Poland; (M.G.); (T.B.); (J.N.-Z.); (K.T.); (M.J.)
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Clark CT, Yang P, Halden N, Ferguson SH, Matthews CJD. Patterns of trace element deposition in beluga whale teeth reflect early life history. Chemosphere 2023; 340:139938. [PMID: 37634591 DOI: 10.1016/j.chemosphere.2023.139938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 08/29/2023]
Abstract
Determination of trace element concentrations in continuously growing biological structures such as otoliths, whiskers, and teeth can provide important insight into physiological and ontogenetic processes. We examined concentrations of 11 trace elements (Li, Mg, Mn, Cu, Zn, Se, Rb, Sr, Cs, Ba, Pb) in the annual dentine growth layer groups (GLGs) of teeth of 66 Eastern Canadian Arctic belugas (Delphinapterus leucas). Several of these trace elements displayed clear and consistent patterns in early life, though few longer term trends or signals were present in trace element data for either females or males. Large changes in Sr and Ba concentrations in fetal dentine reflected in utero shifts in element deposition in the teeth of developing belugas. Marked changes in these elements during the first years after birth were likely associated with the onset of nursing and subsequent weaning. Mg, Mn, and Zn also displayed clear and consistent patterns in early life that correlated strongly with dentine stable nitrogen isotope (δ15N) data, suggesting these elements merit further study as potential tools for studying nursing and weaning. Depositional patterns of Zn and Pb, which have been linked to sexual maturation in female Pacific walruses (Odobenus rosmarus divergens), were inconsistent in beluga teeth. Some individuals (including males) displayed patterns strongly resembling those observed in female walruses, whereas many animals did not, perhaps because they had not yet reached sexual maturity. The lack of clear patterns in trace element deposition after the first few years of life may have resulted from pooling samples from multiple populations/regions collected across more than two decades, but may also indicate that elemental concentrations are primarily driven by other, extrinsic processes later in life, and might be useful as biomonitors of environmental element concentrations or tools for delineating population structure.
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Affiliation(s)
- Casey T Clark
- Washington Department of Fish & Wildlife, Olympia, WA, USA.
| | - Panseok Yang
- Department of Geological Sciences, University of Manitoba, Winnipeg MB, R3T 2N6, Canada
| | - Norm Halden
- Department of Geological Sciences, University of Manitoba, Winnipeg MB, R3T 2N6, Canada
| | - Steven H Ferguson
- Arctic Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Cory J D Matthews
- Arctic Aquatic Research Division, Fisheries and Oceans Canada, Winnipeg, Manitoba, Canada; Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
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Sasaki H, Hayashi K, Imamura M, Hirota Y, Hosoki H, Nitta L, Furutani A, Shibata S. Combined resistant dextrin and low-dose Mg oxide administration increases short-chain fatty acid and lactic acid production by gut microbiota. J Nutr Biochem 2023; 120:109420. [PMID: 37516314 DOI: 10.1016/j.jnutbio.2023.109420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 06/23/2023] [Accepted: 07/22/2023] [Indexed: 07/31/2023]
Abstract
The consumption of resistant dextrin improves constipation, while its fermentation and degradation by the intestinal microbiota produce short-chain fatty acids (SCFA) and lactic acid, which have beneficial effects on host metabolism and immunity. Mg oxide (MgO) is an important mineral that is used to treat constipation. Therefore, resistant dextrin and MgO are often administered together to improve constipation. However, limited information is available regarding the effect of this combination on SCFA and lactic acid production. Crl:CD1(ICR) mice were fed a Mg-free diet with 5% resistant dextrin, followed by oral administration of MgO. We collected the cecum contents and measured SCFA and lactic acid levels. Additionally, the human subjects received resistant dextrin and Mg supplements as part of their habitual diet. The results of this study demonstrate that intestinal microbiota cannot promote SCFA and lactic acid production in the absence of Mg. In a mouse model, low doses of MgO promoted the production of SCFA and lactic acid, whereas high doses decreased their production. In humans, the combined consumption of resistant dextrin and Mg supplements increased the production of SCFA and lactic acid. The production of SCFA and lactic acid from dietary fiber may be augmented by the presence of MgO.
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Affiliation(s)
- Hiroyuki Sasaki
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Katsuki Hayashi
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Momoko Imamura
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Yuro Hirota
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Haruka Hosoki
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Lyie Nitta
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan
| | - Akiko Furutani
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan; Faculty of Home Economics, Aikoku Gakuen Junior College, Edogawa-ku, Tokyo, Japan
| | - Shigenobu Shibata
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, Japan.
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Chen X, Xia Y, Shen S, Wang C, Zan R, Yu H, Yang S, Zheng X, Yang J, Suo T, Gu Y, Zhang X. Research on the Current Application Status of Magnesium Metal Stents in Human Luminal Cavities. J Funct Biomater 2023; 14:462. [PMID: 37754876 PMCID: PMC10532415 DOI: 10.3390/jfb14090462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/01/2023] [Accepted: 09/06/2023] [Indexed: 09/28/2023] Open
Abstract
The human body comprises various tubular structures that have essential functions in different bodily systems. These structures are responsible for transporting food, liquids, waste, and other substances throughout the body. However, factors such as inflammation, tumors, stones, infections, or the accumulation of substances can lead to the narrowing or blockage of these tubular structures, which can impair the normal function of the corresponding organs or tissues. To address luminal obstructions, stenting is a commonly used treatment. However, to minimize complications associated with the long-term implantation of permanent stents, there is an increasing demand for biodegradable stents (BDS). Magnesium (Mg) metal is an exceptional choice for creating BDS due to its degradability, good mechanical properties, and biocompatibility. Currently, the Magmaris® coronary stents and UNITY-BTM biliary stent have obtained Conformité Européene (CE) certification. Moreover, there are several other types of stents undergoing research and development as well as clinical trials. In this review, we discuss the required degradation cycle and the specific properties (anti-inflammatory effect, antibacterial effect, etc.) of BDS in different lumen areas based on the biocompatibility and degradability of currently available magnesium-based scaffolds. We also offer potential insights into the future development of BDS.
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Affiliation(s)
- Xiang Chen
- School of Medicine, Anhui University of Science and Technology, Huainan 232000, China;
| | - Yan Xia
- School of Stomatology, Anhui Medical College, Hefei 230601, China;
| | - Sheng Shen
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (S.S.); (R.Z.); (T.S.)
- Shanghai Engineering Research Center of Biliary Tract Minimal Invasive Surgery and Materials, Shanghai 200032, China;
| | - Chunyan Wang
- Shanghai Engineering Research Center of Biliary Tract Minimal Invasive Surgery and Materials, Shanghai 200032, China;
- Department of General Surgery, Shanghai Xuhui Central Hospital, Shanghai 200031, China
| | - Rui Zan
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (S.S.); (R.Z.); (T.S.)
- Shanghai Engineering Research Center of Biliary Tract Minimal Invasive Surgery and Materials, Shanghai 200032, China;
| | - Han Yu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; (H.Y.); (S.Y.)
| | - Shi Yang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; (H.Y.); (S.Y.)
| | - Xiaohong Zheng
- Department of Hepatopancreatobiliary Surgery, Huainan Xinhua Hospital Affiliated to Anhui University of Science and Technology, Huainan 232000, China; (X.Z.); (J.Y.)
| | - Jiankang Yang
- Department of Hepatopancreatobiliary Surgery, Huainan Xinhua Hospital Affiliated to Anhui University of Science and Technology, Huainan 232000, China; (X.Z.); (J.Y.)
| | - Tao Suo
- Department of Biliary Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China; (S.S.); (R.Z.); (T.S.)
- Shanghai Engineering Research Center of Biliary Tract Minimal Invasive Surgery and Materials, Shanghai 200032, China;
| | - Yaqi Gu
- School of Medicine, Anhui University of Science and Technology, Huainan 232000, China;
- Department of Hepatopancreatobiliary Surgery, Huainan Xinhua Hospital Affiliated to Anhui University of Science and Technology, Huainan 232000, China; (X.Z.); (J.Y.)
| | - Xiaonong Zhang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; (H.Y.); (S.Y.)
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10
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Guo H, Xu C, Wang F, Jiang L, Lei X, Zhang M, Li R, Lan X, Xia Z, Wang Z, Wu Y. Transcriptome sequencing and functional verification revealed the roles of exogenous magnesium in tobacco anti-PVY infection. Front Microbiol 2023; 14:1232279. [PMID: 37577430 PMCID: PMC10414187 DOI: 10.3389/fmicb.2023.1232279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/13/2023] [Indexed: 08/15/2023] Open
Abstract
Potato virus Y (PVY) infection causes necrosis and curling of leaves, which seriously affect the yield and quality of Solanaceous crops. The roles of nutrient elements in the regulation of plant resistance to virus infection has been widely reported, while the mechanisms are poorly studied. Previous studies in our laboratory have demonstrated that foliar spraying of MgSO4 could induce Nicotiana tabacum resistance to PVY by increasing the activity of defense-related enzymes. Consistent with the results, we found that exogenous magnesium (Mg) had a certain effect on N. tabacum anti-PVY infection. Meanwhile, Illumina RNA sequencing revealed that Mg induced resistance to PVY infection was mainly by regulating carbohydrate metabolism and transportation, nitrogen metabolism, Ca2+ signal transduction and oxidative phosphorylation. Moreover, we used virus-induced gene silencing assays to verify the function of homologs of five N. tabacum genes involved in above pathways in N. benthamiana. The results showed that NbTPS and NbGBE were conducive to PVY infection, while NbPPases and NbNR were related to resistance to PVY infection. These results suggested a novel strategy for resistance to PVY infection and provided a theoretical basis for virus-resistance breeding.
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Affiliation(s)
- Huiyan Guo
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Chuantao Xu
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
- Luzhou Branch of Sichuan Province Tobacco Company, Luzhou, China
| | - Fei Wang
- Luzhou Branch of Sichuan Province Tobacco Company, Luzhou, China
| | - Lianqiang Jiang
- Liangshan Branch of Sichuan Province Tobacco Company, Xichang, China
| | - Xiao Lei
- Luzhou Branch of Sichuan Province Tobacco Company, Luzhou, China
| | - Mingjin Zhang
- Luzhou Branch of Sichuan Province Tobacco Company, Luzhou, China
| | - Rui Li
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Xinyu Lan
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Zihao Xia
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Zhiping Wang
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
| | - Yuanhua Wu
- Liaoning Key Laboratory of Plant Pathology, College of Plant Protection, Shenyang Agricultural University, Shenyang, China
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11
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Alwakwak MAI, Esen I, Ahlatcı H, Keskin E. Effect of Rare Earth Elements (Y, La) on Microstructural Characterization and Corrosion Behavior of Ternary Mg-Y-La Alloys. Materials (Basel) 2023; 16:5141. [PMID: 37512414 PMCID: PMC10385729 DOI: 10.3390/ma16145141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/07/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023]
Abstract
In this study, the microstructural properties and corrosion behavior of RE elements (Y, La) added to magnesium in varying minors after casting and homogenization heat treatment were investigated. Three-phase structures, such as α-Mg, lamellae-like phases, and network-shaped eutectic compounds, were seen in the microstructure results. The dendrite-like phases were evenly distributed from the eutectic compounds to the interior of the α-Mg grains, while the eutectic compounds (α-Mg + Mg) RE (La/Y)) were distributed at the grain boundaries. According to the corrosion results, the typical hydroxide formation for lanthanum content caused the formation of crater structures in the material, and with the increase in lanthanum content, these crater structures increased both in depth and in density. In addition, the corrosion products formed by Y2O3 and Y(OH)3 in the Mg-3.21Y-3.15 La alloy increased the thickness of the corrosion film and formed a barrier that protects the material against corrosion. The thinness of the protective barrier against corrosion in the Mg-4.71 Y-3.98 La alloy is due to the increased lanthanum and yttrium ratios. In addition, the corrosion resistance of both Mg-3.21Y-3.15 La and Mg-4.71 Y-3.98 La alloys decreases after homogenization. This negative effect on corrosion is due to the coaxial distribution of oxide/hydroxide layers formed by yttrium and lanthanum after homogenization.
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Affiliation(s)
| | - Ismail Esen
- Mechanical Engineering Department, Karabuk University, Karabuk 78050, Turkey
| | - Hayrettin Ahlatcı
- Metallurgical and Materials Engineering Department, Karabuk University, Karabuk 78050, Turkey
| | - Esma Keskin
- Metallurgical and Materials Engineering Department, Karabuk University, Karabuk 78050, Turkey
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12
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Morad D, Bernstein N. Response of Medical Cannabis to Magnesium ( Mg) Supply at the Vegetative Growth Phase. Plants (Basel) 2023; 12:2676. [PMID: 37514290 PMCID: PMC10386616 DOI: 10.3390/plants12142676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 01/29/2023] [Accepted: 02/07/2023] [Indexed: 07/30/2023]
Abstract
Recent studies demonstrated a significant impact of some major macronutrients on function and production of medical cannabis plants, yet information on the effect of most nutrients, including Mg, is scarce. Magnesium is required for major physiological functions and metabolic processes in plants, and in the present study we studied the effects of five Mg treatments (2, 20, 35, 70, and 140 mg L-1 Mg), on plant development and function, and distribution of minerals in drug-type (medical) cannabis plants, at the vegetative growth phase. The plants were cultivated in pots under controlled environment conditions. The results demonstrate that plant development is optimal under Mg supply of 35-70 mg L-1 (ppm), and impaired under lower Mg input of 2-20 mg L-1. Two mg L-1 Mg resulted in visual deficiency symptoms, shorter plants, reduced photosynthesis rate, transpiration rate, photosynthetic pigments and stomatal conduction in young-mature leaves, and a 28% reduction of total plant biomass compared to the optimal supply of 35 mg L-1 Mg. The highest supply level of 140 mg L-1 Mg induced a small decrease in physiological function, which did not affect morphological development and biomass accumulation. The low-deficient Mg supply of 2 mg L-1 Mg stimulated Mg uptake and accumulation of N, P, K, Ca, Mn, and Zn in the plant. Increased Mg supply impaired uptake of Ca and K and their root-to-shoot translocation, demonstrating competitive cation inhibition. Mg-deficiency symptoms developed first in old leaves (at 2 mg L-1 Mg) and progressed towards young-mature leaves, demonstrating ability for Mg in-planta storage and remobilization. Mg toxicity symptoms appeared in old leaves from the bottom of the plants, under 140 mg L-1 Mg. Taken together, the findings suggest 35-70 mg L-1 Mg as the optimal concentration range for cannabis plant development and function at the vegetative growth phase.
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Affiliation(s)
- Dalit Morad
- Institute of Soil Water and Environmental Sciences, Volcani Center, 68 HaMaccabim Road, P.O. Box 15159, Rishon LeZion 7505101, Israel
- The Robert H. Smith Faculty of Agriculture, The Hebrew University of Jerusalem, Rehovot, Israel
| | - Nirit Bernstein
- Institute of Soil Water and Environmental Sciences, Volcani Center, 68 HaMaccabim Road, P.O. Box 15159, Rishon LeZion 7505101, Israel
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13
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Guerrero-Romero F, Micke O, Simental-Mendía LE, Rodríguez-Morán M, Vormann J, Iotti S, Banjanin N, Rosanoff A, Baniasadi S, Pourdowlat G, Nechifor M. Importance of Magnesium Status in COVID-19. Biology (Basel) 2023; 12:biology12050735. [PMID: 37237547 DOI: 10.3390/biology12050735] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 04/17/2023] [Accepted: 05/01/2023] [Indexed: 05/28/2023]
Abstract
A large amount of published research points to the interesting concept (hypothesis) that magnesium (Mg) status may have relevance for the outcome of COVID-19 and that Mg could be protective during the COVID disease course. As an essential element, Mg plays basic biochemical, cellular, and physiological roles required for cardiovascular, immunological, respiratory, and neurological functions. Both low serum and dietary Mg have been associated with the severity of COVID-19 outcomes, including mortality; both are also associated with COVID-19 risk factors such as older age, obesity, type 2 diabetes, kidney disease, cardiovascular disease, hypertension, and asthma. In addition, populations with high rates of COVID-19 mortality and hospitalization tend to consume diets high in modern processed foods, which are generally low in Mg. In this review, we review the research to describe and consider the possible impact of Mg and Mg status on COVID-19 showing that (1) serum Mg between 2.19 and 2.26 mg/dL and dietary Mg intakes > 329 mg/day could be protective during the disease course and (2) inhaled Mg may improve oxygenation of hypoxic COVID-19 patients. In spite of such promise, oral Mg for COVID-19 has thus far been studied only in combination with other nutrients. Mg deficiency is involved in the occurrence and aggravation of neuropsychiatric complications of COVID-19, including memory loss, cognition, loss of taste and smell, ataxia, confusion, dizziness, and headache. Potential of zinc and/or Mg as useful for increasing drug therapy effectiveness or reducing adverse effect of anti-COVID-19 drugs is reviewed. Oral Mg trials of patients with COVID-19 are warranted.
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Affiliation(s)
| | - Oliver Micke
- Department of Radiation Therapy and Radiation Oncology, Franziskus Hospital, 33615 Bielefeld, Germany
| | | | | | - Juergen Vormann
- Institute for Prevention and Nutrition, 85737 Ismaning, Germany
| | - Stefano Iotti
- Department of Pharmacy and Biotechnology, Universita di Bologna, 40126 Bologna, Italy
- National Institute of Biostructures and Biosystems, 00136 Rome, Italy
| | - Nikolina Banjanin
- Institute of Hygiene and Medical Ecology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Andrea Rosanoff
- CMER Center for Magnesium Education & Research, Pahoa, HI 96778, USA
| | - Shadi Baniasadi
- Tracheal Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran
| | - Guitti Pourdowlat
- Chronic Respiratory Diseases Research Centre, National Research Institute of Tuberculosis and Lung Diseases, Shahid Beheshti University of Medical Sciences, Tehran 198396-3113, Iran
| | - Mihai Nechifor
- Department of Pharmacology, Gr. T Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
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Fondjo LA, Sarpong D, Owiredu WKBA, Opoku S, Adu‐Bonsaffoh K, Teviu E. Effect of magnesium sulfate treatment on mediators of endothelial dysfunction and electrolytes in mild and severe preeclampsia: A case-control study. Health Sci Rep 2023; 6:e1232. [PMID: 37123551 PMCID: PMC10130740 DOI: 10.1002/hsr2.1232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/05/2023] [Accepted: 04/11/2023] [Indexed: 05/02/2023] Open
Abstract
Background and Aims Magnesium sulfate (MgSO4) treatment is widely used for the prevention of eclamptic seizures. However, its effect on mediators of endothelial dysfunction (ED) and electrolytes remains unclear. We evaluated the effects of MgSO4 treatment on mediators of ED and electrolytes. Methods We recruited 100 women comprising 50 severe, 50 mild preeclampsia (PE) as cases and 50 normotensive pregnant women as controls from the Sampa Government Hospital, Ghana. We estimated for adrenomedullin (AM), calcitonin gene-related peptide (CGRP), soluble forms of intercellular adhesion molecule-1 (sICAM-1), Na+, K+, and Mg2+ before MgSO4 treatment, 24 h after MgSO4 treatment, and 48 h after delivery. p < 0.05 were considered significant for statistical analyses. Results Levels of AM, sICAM-1, and Na+ decreased significantly at 24 h after MgSO4 treatment and 48 h after delivery among PE women compared to the AM levels before treatment (p < 0.0001). The levels of CGRP and Mg2+ increased significantly after 24 h of MgSO4 treatment and 48 h after delivery among PE compared to the AM levels before treatment (p < 0.0001). The changes in AM, sICAM-1, CGRP, and Mg2+ at 24 h after treatment and 48 h after delivery were significantly higher in severe compared to mild PE (p < 0.0001). AM levels reduced significantly by 14.7% in mild and 42.7% in severe PE after MgSO₄ treatment (p < 0.05). sICAM-1 levels reduced significantly by 20.9% in mild and 25% in severe PE after MgSO₄ treatment. After MgSO₄ treatment, there was significant increase of 42.1% and >100% in CGRP levels in mild and severe PE, respectively (p < 0.05). After MgSO₄ treatment, Mg²⁺ levels increased significantly by 67.0% and 63.8% in mild and severe PE, respectively (p < 0.05). Conclusion MgSO₄ treatment reduces AM, sICAM-1, and sodium levels but improves magnesium and CGRP in severe than mild PE thus have more beneficial role in severe PE.
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Affiliation(s)
- Linda A. Fondjo
- Department of Molecular Medicine, School of Medicine and DentistryKwame Nkrumah University of Science and TechnologyKumasiGhana
| | - Davis Sarpong
- Department of Molecular Medicine, School of Medicine and DentistryKwame Nkrumah University of Science and TechnologyKumasiGhana
- Sampa Government HospitalWestern RegionGhana
| | - William K. B. A. Owiredu
- Department of Molecular Medicine, School of Medicine and DentistryKwame Nkrumah University of Science and TechnologyKumasiGhana
| | - Stephen Opoku
- Department of Medical Diagnostics, Faculty of Allied Health SciencesKwame Nkrumah University of Science and TechnologyKumasiGhana
| | - Kwame Adu‐Bonsaffoh
- Department of Obstetrics GynaecologyUniversity of Ghana Medical SchoolAccraGhana
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15
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Ali W, Li M, Tillmann L, Mayer T, González C, LLorca J, Kopp A. Bioabsorbable WE43 Mg alloy wires modified by continuous plasma-electrolytic oxidation for implant applications. Part I: Processing, microstructure and mechanical properties. Biomater Adv 2023; 146:213314. [PMID: 36746045 DOI: 10.1016/j.bioadv.2023.213314] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 01/13/2023] [Accepted: 01/21/2023] [Indexed: 01/27/2023]
Abstract
In our work, a novel processing strategy for the continuous fabrication and surface modification of wires from Magnesium alloy WE43 by means of plasma-electrolytic oxidation (PEO) is presented. In the first step, wires with a strong basal texture and small grain size (≈ 1 μm) were manufactured by combined cold drawing and in-line stress-relief heat treatment steps that optimized the mechanical properties (in terms of strength and ductility) by means of annealing. In a second step, and to the best of our knowledge for the first time ever, the wires were continuously surface-modified with a novel plasma electrolytic oxidation process, which was able to create a homogeneous porous oxide layer made of MgO and Mg3(PO4)2 on the wire surface. While the oxide layer slightly diminished the tensile properties, the strength of the surface-modified wires could be maintained close to 300 MPa with a strain-to-failure ≈ 8 %. Furthermore, the thickness of the oxide layer could be controlled by immersion time within the electrolytic bath and was adjusted to realize a thicknesses of ≈ 8 μm, which could be obtained in <20 s. Our experiments showed that the chemical composition, morphology and porosity of the oxide layer could be tailored by changing electrical parameters. The combined cold drawing and heat treatment process with additional continuous plasma electrolytic oxidation processing can be upscaled to produce a novel generation of bioabsorbable Mg wires with optimized mechanical, degradation and biological performance for use in biomedical applications.
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Affiliation(s)
- Wahaaj Ali
- IMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, Spain; Department of Material Science and Engineering, Universidad Carlos III de Madrid, Leganés, Madrid 28911, Spain; Meotec GmbH, Philipsstr. 8, 52068 Aachen, Germany
| | - Muzi Li
- IMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, Spain
| | | | - Tim Mayer
- Meotec GmbH, Philipsstr. 8, 52068 Aachen, Germany
| | - Carlos González
- IMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, Spain; Department of Materials Science, Polytechnic University of Madrid/Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Javier LLorca
- IMDEA Materials Institute, C/Eric Kandel 2, 28906 Getafe, Madrid, Spain; Department of Materials Science, Polytechnic University of Madrid/Universidad Politécnica de Madrid, 28040 Madrid, Spain.
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16
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Tian G, Qin H, Liu C, Xing Y, Feng Z, Xu X, Liu J, Lyu M, Jiang H, Zhu Z, Jiang Y, Ge S. Magnesium improved fruit quality by regulating photosynthetic nitrogen use efficiency, carbon-nitrogen metabolism, and anthocyanin biosynthesis in 'Red Fuji' apple. Front Plant Sci 2023; 14:1136179. [PMID: 36909439 PMCID: PMC9995890 DOI: 10.3389/fpls.2023.1136179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
INTRODUCTION Both nitrogen (N) and magnesium (Mg) play important roles in biochemical and physiological processes in plants. However, the application of excessive N and insufficient Mg may be the factor leading to low nitrogen utilization rate (NUE) and fruit quality degradation in apple production. METHODS In this study, we analyzed the effects of different application rates of Mg (0, 50, 100, 150, 200 kg/ha) on the photosynthetic nitrogen use efficiency (PNUE), the accumulation and distribution of carbon (C), N metabolism, anthocyanin biosynthesis and fruit quality of the 'Red Fuji' apple in 2018 and 2019. RESULTS The results showed that the application of Mg significantly increased the 15NUE and increased the allocation rate of 15N in the leaves whereas the 15N allocation rate in the perennial organs and fruits was decreased. With the increase in Mg supply, the activities of N metabolism enzymes (NiR, GS, and GOGAT) were significantly promoted and the content of intermediate products in N metabolism ( NO 2 - , NH 4 + , and free amino acid) was significantly decreased. Furthermore, an appropriate rate of Mg significantly promoted the net photosynthetic rate (Pn) and photosynthetic nitrogen use efficiency (PNUE), enhanced the enzyme activities of C metabolism (SS, SPS, S6PDH), and increased the contents of sorbitol and sucrose in leaves. In addition, Mg upregulated the gene expression of sugar transporters (MdSOT1, MdSOT3, MdSUT1, and MdSUT4) in fruit stalk and fruit fresh; 13C isotope tracer technology also showed that Mg significantly increased the 13C allocation in the fruits. Mg also significantly increased the expression of anthocyanin biosynthesis genes (MdCHS and MdF3H) and transcription factors (MdMYB1 and MdbZIP44) and the content of anthocyanin in apple peel. CONCLUSION The comprehensive analysis showed that the appropriate application of Mg (150 kg/ha) promoted PNUE, C-N metabolism, and anthocyanin biosynthesis in apple trees.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Zhanling Zhu
- *Correspondence: Zhanling Zhu, ; Yuanmao Jiang, ; Shunfeng Ge,
| | - Yuanmao Jiang
- *Correspondence: Zhanling Zhu, ; Yuanmao Jiang, ; Shunfeng Ge,
| | - Shunfeng Ge
- *Correspondence: Zhanling Zhu, ; Yuanmao Jiang, ; Shunfeng Ge,
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17
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Hu X, Cao Y, Cai L, Wang H, Fang G, Wang S. A smartphone-assisted optosensing platform based on chromium-based metal-organic framework signal amplification for ultrasensitive and real-time determination of oxytetracycline. J Hazard Mater 2023; 444:130395. [PMID: 36402106 DOI: 10.1016/j.jhazmat.2022.130395] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/05/2022] [Accepted: 11/12/2022] [Indexed: 06/16/2023]
Abstract
Ultrasensitive and onsite detection of oxytetracycline (OTC) is of vital significance for ensuring public health. Herein, a novel and versatile fluorescence biomimetic nanosensor, Mg,N-CDs@MIL-101@MIP, was elaborately tailored for the assay of OTC. MIL-101 with extraordinarily high surface area and porosity, as a favorable supporter, suppressed self-quenching of Mg,N-CDs and boosted mass transfer rate, realizing signal amplification. As an ultrasensitive signal transducer, high luminescent Mg,N-CDs yielded conspicuous fluorescence responses for OTC, enhancing the sensitivity of Mg,N-CDs@MIL-101@MIP. High-affinity imprinting sites further endowed Mg,N-CDs@MIL-101@MIP with superior anti-interference ability and reusability. Given prominent merits, Mg,N-CDs@MIL-101@MIP demonstrated a good linear range (0.05-40 μg mL-1) with a lower limit of detection (16.8 ng mL-1), supplying high accessibility to realize ultrasensitive and highly selective measurement of OTC in samples. Additionally, to attain precise onsite profiling of OTC, an intelligent sensing platform was developed by integrating Mg,N-CDs@MIL-101@MIP with a portable smartphone-assisted optical device. As both signal reader and analyzer, smartphone can instantly capture concentration-dependent fluorescent images and accurately digitize them, accomplishing quantitative analysis of OTC. More delightfully, the portable platform was utilized for visual determination of OTC in milk samples with satisfactory results, offering a promising tool for the high-performance onsite evaluation of food safety and environmental health.
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Affiliation(s)
- Xuelian Hu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Yichuan Cao
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Lin Cai
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Haiyang Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Guozhen Fang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China.
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China; Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300071, China.
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18
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Palm K, Karahadian ME, Leite MS, Munday JN. Optical Tunability and Characterization of Mg-Al, Mg-Ti, and Mg-Ni Alloy Hydrides for Dynamic Color Switching Devices. ACS Appl Mater Interfaces 2023; 15:1010-1020. [PMID: 36566453 PMCID: PMC9837776 DOI: 10.1021/acsami.2c17264] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2022] [Accepted: 11/28/2022] [Indexed: 06/17/2023]
Abstract
Mg shows great potential as a metal hydride for switchable optical response and hydrogen detection due to its ability to stably incorporate significant amounts of hydrogen into its lattice. However, this thermodynamic stability makes hydrogen removal difficult. By alloying Mg with secondary elements, the hydrogenation kinetics can be increased. Here, we report the dynamic optical, loading, and stress properties of three Mg alloy systems (Mg-Al, Mg-Ti, and Mg-Ni) and present several novel phenomena and three distinct device designs that can be achieved with them. We find that these materials all have large deviations in refractive index when exposed to H2 gas, with a wide range of potential properties in the hydride state. The magnitude and sign of the optical property change for each of the alloys are similar, but the differences have dramatic effects on device design. We show that Mg-Ti alloys perform well as both switchable windows and broadband switchable light absorbers, where Mg0.87Ti0.13 and Mg0.85Ti0.15 can achieve a 40% transmission change as a switchable window and a 55% absorption change as a switchable solar absorber. We also show how different alloys can be used for dynamically tunable color filters, where both the reflected and transmitted colors depend on the hydrogenation state. We demonstrate how small changes in the alloy composition (e.g., with Mg-Ni) can lead to dramatically different color responses upon hydrogenation (red-shifting vs blue-shifting of the resonance). Our results establish the potential for these Mg alloys in a variety of applications relating to hydrogen storage, detection, and optical devices, which are necessary for a future hydrogen economy.
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Affiliation(s)
- Kevin
J. Palm
- Department
of Physics, University of Maryland, College Park, Maryland 20742, United States
- Institute
for Research in Electronics and Applied Physics, University of Maryland, College
Park, Maryland 20742, United States
| | - Micah E. Karahadian
- Department
of Electrical and Computer Engineering, University of California, Davis, California 95616, United States
| | - Marina S. Leite
- Department
of Materials Science and Engineering, University
of California, Davis, California 95616, United States
| | - Jeremy N. Munday
- Department
of Electrical and Computer Engineering, University of California, Davis, California 95616, United States
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19
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Ali F, Kalva SN, Koç M. Additive Manufacturing of Polymer/ Mg-Based Composites for Porous Tissue Scaffolds. Polymers (Basel) 2022; 14. [PMID: 36559829 DOI: 10.3390/polym14245460] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 11/29/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022] Open
Abstract
Due to their commercial availability, superior processability, and biocompatibility, polymers are frequently used to build three-dimensional (3D) porous scaffolds. The main issues limiting the widespread clinical use of monophasic polymer scaffolds in the bone healing process are their inadequate mechanical strength and inappropriate biodegradation. Due to their mechanical strength and biocompatibility, metal-based scaffolds have been used for various bone regenerative applications. However, due to the mismatch in mechanical properties and nondegradability, they lack integration with the host tissues, resulting in the production of fiber tissue and the release of toxic ions, posing a risk to the durability of scaffolds. Due to their natural degradability in the body, Mg and its alloys increasingly attract attention for orthopedic and cardiovascular applications. Incorporating Mg micro-nano-scale particles into biodegradable polymers dramatically improves scaffolds and implants' strength, biocompatibility, and biodegradability. Polymer biodegradable implants also improve the quality of life, particularly for an aging society, by eliminating the secondary surgery often needed to remove permanent implants and significantly reducing healthcare costs. This paper reviews the suitability of various biodegradable polymer/Mg composites for bone tissue scaffolds and then summarizes the current status and challenges of polymer/magnesium composite scaffolds. In addition, this paper reviews the potential use of 3D printing, which has a unique design capability for developing complex structures with fewer material waste at a faster rate, and with a personalized and on-site fabrication possibility.
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Bego T, Meseldžić N, Prnjavorac B, Prnjavorac L, Marjanović D, Azevedo R, Pinto E, Duro M, Couto C, Almeida A. Association of trace element status in COVID-19 patients with disease severity. J Trace Elem Med Biol 2022; 74:127055. [PMID: 35985069 PMCID: PMC9349050 DOI: 10.1016/j.jtemb.2022.127055] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 07/04/2022] [Accepted: 08/02/2022] [Indexed: 11/23/2022]
Abstract
Caused by the new SARS-CoV-2 coronavirus, COVID-19 (coronavirus disease 2019) evolves with clinical symptoms that vary widely in severity, from mild symptoms to critical conditions, which can even result in the patient's death. A critical aspect related to an individual response to SARS-CoV-2 infection is the competence of the immune system, and it is well known that several trace elements are essential for an adequate immune response and have anti-inflammatory and antioxidant properties that are of particular importance in fighting infection. Thus, it is widely accepted that adequate trace element status can reduce the risk of SARS-CoV-2 infection and disease severity. In this study, we evaluated the serum levels of Cu, Zn, Se, Fe, I and Mg in patients (n = 210) with clinical conditions of different severity ("mild", "moderate", "severe" and "exitus letalis", i.e., patients who eventually died). The results showed significant differences between the four groups for Cu, Zn, Se and Fe, in particular a significant trend of Zn and Se serum levels to be decreased and Cu to be increased with the severity of symptoms. For Mg and I, no differences were observed, but I levels were shown to be increased in all groups.
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Affiliation(s)
- Tamer Bego
- University of Sarajevo, Faculty of Pharmacy, Department of Pharmaceutical Biochemistry and Laboratory Diagnostics, 71000 Sarajevo, Bosnia and Herzegovina.
| | - Neven Meseldžić
- University of Sarajevo, Faculty of Pharmacy, Department of Pharmaceutical Biochemistry and Laboratory Diagnostics, 71000 Sarajevo, Bosnia and Herzegovina
| | - Besim Prnjavorac
- University of Sarajevo, Faculty of Pharmacy, 71000 Sarajevo, Bosnia and Herzegovina; General Hospital Tešanj, 74260 Tešanj, Bosnia and Herzegovina
| | | | - Damir Marjanović
- International Burch University, 71000 Sarajevo, Bosnia and Herzegovina
| | - Rui Azevedo
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Edgar Pinto
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; Department of Environmental Health, School of Health, P.Porto, 4200-072 Porto, Portugal
| | - Mary Duro
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; Fernando Pessoa Health School, 4249-004 Porto, Portugal
| | - Cristina Couto
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; TOXRUN - Toxicology Research Unit, University Institute of Health Sciences, CESPU, CRL, 4585-116 Gandra, Portugal
| | - Agostinho Almeida
- LAQV/REQUIMTE, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
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Krzebietke SJ, Mackiewicz-Walec E, Sienkiewicz S, Wierzbowska J, Załuski D, Borowik A. Polycyclic Aromatic Hydrocarbons in Soil at Different Depths under a Long-Term Experiment Depending on Fertilization. Int J Environ Res Public Health 2022; 19:ijerph191610460. [PMID: 36012095 PMCID: PMC9408199 DOI: 10.3390/ijerph191610460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 08/17/2022] [Indexed: 05/04/2023]
Abstract
The aim of this study was to assess the effect of long-term fertilization with manure and mineral fertilizers on the content and distribution of selected polycyclic aromatic hydrocarbons (PAHs)-the content of a sum of 16 polycyclic aromatic hydrocarbons, light and heavy PAHs in two soil layers (0-30 cm and 30-60 cm). The material for the study was composed of soil samples collected from the sixth rotation in a long-term, controlled field experiment, conducted in Bałcyny since 1986. The content of 16 polycyclic aromatic hydrocarbons was determined on a gas chromatographer coupled with an FID detector. In order to evaluate the significance of differences between the mean effects on the tested characteristics, a non-parametric Mann-Whitney U test for two independent samples was applied. A higher content of the sum (16) of PAHs was found in the 0-30 cm than in the 30-60 cm soil layer. The research results also demonstrated a higher content of the sum of light PAHs in the 30-60 cm than in the 0-30 cm soil layer. The content of heavy PAHs, in turn, was significantly higher in the upper than in the deeper soil layer. This dependence appeared in both the soil fertilized with manure and soil nourished only with mineral fertilizers.
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Affiliation(s)
- Sławomir Józef Krzebietke
- Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
- Correspondence:
| | - Ewa Mackiewicz-Walec
- Department of Agrotechnology and Agribusiness, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
| | - Stanisław Sienkiewicz
- Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
| | - Jadwiga Wierzbowska
- Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
| | - Dariusz Załuski
- Department of Genetics, Plant Breeding and Biofeedstock Engineering, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-724, Olsztyn, Poland
| | - Agata Borowik
- Department of Soil Science and Microbiology, Faculty of Agriculture and Forestry, University of Warmia and Mazury in Olsztyn, 10-719 Olsztyn, Poland
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Zheng Z, Wei Q, Wan X, Zhong X, Liu L, Zeng J, Mao L, Han X, Tou F, Rao J. Correlation Analysis Between Trace Elements and Colorectal Cancer Metabolism by Integrated Serum Proteome and Metabolome. Front Immunol 2022; 13:921317. [PMID: 35720415 PMCID: PMC9201339 DOI: 10.3389/fimmu.2022.921317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 05/06/2022] [Indexed: 11/13/2022] Open
Abstract
Colorectal cancer (CRC) is currently the third most common cancer with a high mortality rate. The underlying molecular mechanism of CRC, especially advanced CRC, remains poorly understood, resulting in few available therapeutic plans. To expand our knowledge of the molecular characteristics of advanced CRC and explore possible new therapeutic strategies, we herein conducted integrated proteomics and metabolomics analyses of 40 serum samples collected from 20 advanced CRC patients before and after treatment. The mass spectrometry-based proteomics analysis was performed under data-independent acquisition (DIA), and the metabolomics analysis was performed by ultra-performance liquid chromatography coupled with time-of-flight tandem mass spectrometry (UPLC-TOF-MS/MS). Trace elements including Mg, Zn, and Fe were measured by inductively coupled plasma spectrometry (ICP-MS) analysis. Four of the 20 patients had progressive disease (PD) after treatment, and clinical test results indicated that they all had impaired liver functions. In the proteomics analysis, 64 proteins were discovered to be significantly altered after treatment. These proteins were enriched in cancer-related pathways and pathways participating immune responses, such as MAPK signaling pathway and complement/coagulation cascades. In the metabolomics analysis, 128 metabolites were found to be significantly changed after treatment, and most of them are enriched in pathways associated with lipid metabolism. The cholesterol metabolism pathway was significantly enriched in both the proteomics and metabolomics pathway enrichment analyses. The concentrations of Mg in the serums of CRC patients were significantly lower than those in healthy individuals, which returned to the normal range after treatment. Correlation analysis linked key lipids, proteins, and Mg as immune modulators in the development of advanced CRC. The results of this study not only extended our knowledge on the molecular basis of advanced CRC but also provided potential novel therapeutic targets for CRC treatment.
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Affiliation(s)
- Zhi Zheng
- Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Qingfeng Wei
- Jiangxi Cancer Hospital, The Second Affiliated Hospital of Nanchang Medical College, Jiangxi Clinical Research Center for Cancer, Nanchang, China
| | - Xianghui Wan
- Jiangxi Cancer Hospital, The Second Affiliated Hospital of Nanchang Medical College, Jiangxi Clinical Research Center for Cancer, Nanchang, China
| | - Xiaoming Zhong
- Jiangxi Cancer Hospital, The Second Affiliated Hospital of Nanchang Medical College, Jiangxi Clinical Research Center for Cancer, Nanchang, China
| | - Lijuan Liu
- Jiangxi Cancer Hospital, The Second Affiliated Hospital of Nanchang Medical College, Jiangxi Clinical Research Center for Cancer, Nanchang, China
| | - Jiquan Zeng
- Jiangxi Cancer Hospital, The Second Affiliated Hospital of Nanchang Medical College, Jiangxi Clinical Research Center for Cancer, Nanchang, China
| | - Lihua Mao
- Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Xiaojian Han
- Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Fangfang Tou
- Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, China
| | - Jun Rao
- Jiangxi Cancer Hospital, The Second Affiliated Hospital of Nanchang Medical College, Jiangxi Clinical Research Center for Cancer, Nanchang, China
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Suljevic O, Fischerauer SF, Weinberg AM, Sommer NG. Immunological reaction to magnesium-based implants for orthopedic applications. What do we know so far? A systematic review on in vivo studies. Mater Today Bio 2022; 15:100315. [PMID: 35757033 PMCID: PMC9214802 DOI: 10.1016/j.mtbio.2022.100315] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 05/15/2022] [Accepted: 06/02/2022] [Indexed: 12/09/2022]
Abstract
Magnesium-based implants (Mg) became an attractive candidate in orthopedic surgery due to their valuable properties, such as osteoconductivity, biodegradability, elasticity and mechanical strength. However, previous studies on biodegradable and non-biodegradable metal implants showed that these materials are not inert when placed in vivo as they interact with host defensive mechanisms. The aim of this study was to systematically review available in vivo studies with Mg-based implants that investigated immunological reactions to these implants. The following questions were raised: Do different types of Mg-based implants in terms of shape, size and alloying system cause different extent of immune response? and; Are there missing links to properly understand immunological reactions upon implantation and degradation of Mg-based implants? The database used for the literature research was PubMed (U.S. National Library of Medicine) and it was undertaken in the end of 2021. The inclusion criteria comprised (i) in vivo studies with bony implantation of Mg-based implants and (ii) analysis of the presence of local immune cells or systemic inflammatory parameters. We further excluded any studies involving coated Mg-implants, in vitro studies, and studies in which the implants had no bone contact. The systematic search process was conducted according to PRISMA guidelines. Initially, the search yielded 225 original articles. After reading each article, and based on the inclusion and exclusion criteria, 16 articles were included in the systematic review. In the available studies, Mg-based implants were not found to cause any severe inflammatory reaction, and only a mild to moderate inflammatory potential was attributed to the material. The timeline of foreign body giant cell formation showed to be different between the reviewed studies. The variety of degradation kinetics of different tested implants and discrepancies in studies regarding the time points of immunological investigations impair the conclusion of immunological reactions. This may be induced by different physical properties of an implant such as size, shape and alloying system. Further research is essential to elucidate the underlying mechanisms by which implant degradation affects the immune system. Also, better understanding will facilitate the decision of patients whether to undergo surgery with new device implantation.
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Affiliation(s)
- Omer Suljevic
- Department of Orthopedics and Traumatology, Medical University of Graz, Graz, Austria
| | - Stefan F Fischerauer
- Department of Orthopedics and Traumatology, Medical University of Graz, Graz, Austria
| | - Annelie M Weinberg
- Department of Orthopedics and Traumatology, Medical University of Graz, Graz, Austria
| | - Nicole G Sommer
- Department of Orthopedics and Traumatology, Medical University of Graz, Graz, Austria
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Kesavan P, Satheesh AP, Husain RSRA, Veerappan U, Kannaian S, Ahmed SS, Veerabathiran R. Genetic predisposition of TNFα gene polymorphism in South-Indian Migraineurs and meta-analysis. Front Biosci (Elite Ed) 2021; 13:226-236. [PMID: 34937310 DOI: 10.52586/e880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 08/02/2021] [Accepted: 08/10/2021] [Indexed: 11/09/2022]
Abstract
Migraine (Mg) is a multifaceted neurovascular disorder caused by genetic and several environmental etiologies. We have implemented a case-control study of TNFα gene polymorphism in 212 Mg patients and 218 healthy controls utilizing the ARMS-PCR technique, followed by Sanger sequencing. Besides, we have conducted a meta-analysis of different genetic models (five genetic models) to combine and summarize the available data from 11 studies (including this present research). The strength of genetic associations in the meta-analysis used to assess by the pooled odds ratio (OR) and 95% confidence intervals (CI). The results of this case-control study discovered a significant relationship with Mg in recessive and homozygous genotype with OR = 2.35 (95% CI [0.96-5.74]), p-value = 0.045. Also, the outcomes of meta-analysis suggested an irrelevant relationship between TNFα gene (rs1800629) polymorphism and Mg susceptibility in the five genetic models. However, subgrouping based on ethnic background showed a significant association in the allelic genetic model with OR = 1.53 (95% CI [1.02-2.31]), p = 0.040 respectively. The meta-analysis results of TNFα gene polymorphism may represent a risk factor for Mg among Asians. In the future, large scale, multicentric case-control study by classification of patients with Mg with or without aura can be performed worldwide to identify the potential genetic risk factors leading to Mg pathogenesis.
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Affiliation(s)
- Pallavi Kesavan
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), 603103 Kelambakkam, Tamilnadu, India
| | - Aiswarya Padmaja Satheesh
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), 603103 Kelambakkam, Tamilnadu, India
| | - Rehman Syed Rasheed Akram Husain
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), 603103 Kelambakkam, Tamilnadu, India
| | - Umamaheshwari Veerappan
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), 603103 Kelambakkam, Tamilnadu, India
| | - Subramaniyan Kannaian
- Department of Neurology, Chettinad Super Speciality Hospital, Chettinad Health City, 603103 Kelambakkam, Tamil Nadu, India
| | - Shiek Ssj Ahmed
- Drug Discovery and Multi-omics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI) Chettinad Academy of Research and Education (CARE), 603103 Kelambakkam, Tamilnadu, India
| | - Ramakrishnan Veerabathiran
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute (CHRI), Chettinad Academy of Research and Education (CARE), 603103 Kelambakkam, Tamilnadu, India
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Fintová S, Trško L, Chlup Z, Pastorek F, Kajánek D, Kunz L. Fatigue Crack Initiation Change of Cast AZ91 Magnesium Alloy from Low to Very High Cycle Fatigue Region. Materials (Basel) 2021; 14:ma14216245. [PMID: 34771771 PMCID: PMC8585000 DOI: 10.3390/ma14216245] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 10/12/2021] [Accepted: 10/15/2021] [Indexed: 12/02/2022]
Abstract
Fatigue tests were performed on the AZ91 cast alloy to identify the mechanisms of the fatigue crack initiation. In different fatigue regions, different mechanisms were observed. In the low and high cycle fatigue regions, slip markings formation accompanied with Mg17Al12 particles cracking were observed. Slip markings act as the fatigue crack initiation sites. The size and number of slip markings decreased with decreased stress amplitude applied. When slip markings formation was suppressed due to low stress amplitude, particle cracking became more important and the cracks continued to grow through the particle/solid solution interface. The change of the fatigue crack initiation mechanisms led the S-N curve to shift to the higher number of cycles to the fracture, demonstrated by its stepwise character. A lower fatigue limit of 60 MPa was determined at 20 kHz for 2 × 109 cycles compared to the 80 MPa determined at 60 Hz for 1 × 107 cycles.
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Affiliation(s)
- Stanislava Fintová
- Institute of Physics of Materials, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic; (Z.C.); (L.K.)
- Correspondence: ; Tel.: +420-532-290-301
| | - Libor Trško
- Research Centre, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia; (L.T.); (F.P.); (D.K.)
| | - Zdeněk Chlup
- Institute of Physics of Materials, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic; (Z.C.); (L.K.)
| | - Filip Pastorek
- Research Centre, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia; (L.T.); (F.P.); (D.K.)
| | - Daniel Kajánek
- Research Centre, University of Žilina, Univerzitná 8215/1, 010 26 Žilina, Slovakia; (L.T.); (F.P.); (D.K.)
| | - Ludvík Kunz
- Institute of Physics of Materials, Czech Academy of Sciences, Žižkova 22, 616 00 Brno, Czech Republic; (Z.C.); (L.K.)
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Rezazadeh H, Sharifi MR, Sharifi M, Soltani N. Magnesium sulfate improves insulin resistance in high fat diet induced diabetic parents and their offspring. Eur J Pharmacol 2021; 909:174418. [PMID: 34411605 DOI: 10.1016/j.ejphar.2021.174418] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/31/2021] [Accepted: 08/11/2021] [Indexed: 01/01/2023]
Abstract
In the present study, first, the role of high-fat diet (HFD) in insulin resistance (IR) in offspring with diabetic and non-diabetic parents, and then the effect of magnesium sulfate (Mg) administration on improved IR in HFD diabetic parents, and their offspring were investigated. Induction of diabetes was carried out by eating HFD and a low dose of streptozotocin (STZ). Diabetic rats were divided into three groups: diabetic control (DC), insulin, and Mg-treated (Mg). The non-diabetic control (NDC) group received a normal diet. Their offspring were fed on a regular diet for four months. Blood glucose and body weight of all animals were measured weekly, and IPGTT, urine volume, and water intake were measured monthly. In both parents and their offspring, the hyperinsulinemic euglycemic clamp was conducted, and blood samples were obtained. In all groups, the expression of IRS1, Akt and GLUT4 genes in muscle was measured. The HFD-fed rats exhibited a significant increase in blood glucose, body weight and IPGTT. In diabetic parents and their offspring, Mg or insulin therapy lowered blood glucose, IPGTT, and HbA1c relative to the DC group. They also increased GIR in parents and their offspring. Compared to the DC group, the expression of IRS1, Akt and GLUT4 genes was increased in both parents. Mg had positive effects on the expression of IRS1, Akt and GLUT4 genes in Mg treated offspring and reduced IR in them. As a result, magnesium may have beneficial effects on IR by increasing the expression of IRS1, Akt and GLUT4 genes.
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Affiliation(s)
- Hossein Rezazadeh
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Reza Sharifi
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohmmadreza Sharifi
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nepton Soltani
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
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Walker B, Jing Z, Ren P. Molecular dynamics free energy simulations of ATP: Mg2+ and ADP:Mg 2+ using the polarizable force field AMOEBA. Mol Simul 2021; 47:439-448. [PMID: 34421214 DOI: 10.1080/08927022.2020.1725003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
ATPases and GTPases are two important classes of protein that play critical roles in energy transduction, cellular signaling, gene regulation and catalysis. These proteins use cofactors such as nucleoside di and tri-phosphates (NTP, NDP) and can detect the difference between NDP and NTP which then induce different protein conformations. Mechanisms that drive proteins into the NTP or NDP conformation may depend on factors such as ligand structure and how Mg2+ coordinates with the ligand, amino acids in the pocket and water molecules. Here, we have used the advanced electrostatic and polarizable force field AMOEBA and molecular dynamics free energy simulations (MDFE) to examine the various binding mechanisms of ATP:Mg2+ and ADP:Mg2+.We compared the ATP:Mg2+ binding with previous studies using non-polarizable force fields and experimental data on the binding affinity. It was found that the total free energy of binding for ATP:Mg2+ (-7.00 ± 2.13 kcal/mol) is in good agreement with experimental values (-8.6 ± .2 kcal/mol)1. In addition, parameters for relevant protonation states of ATP, ADP, GTP and GDP have been derived. These parameters will allow for researchers to investigate biochemical phenomena involving NTP's and NDP's with greater accuracy than previous studies involving non-polarizable force fields.
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Affiliation(s)
- Brandon Walker
- Department of Biomedical Engineering at The University of Texas at Austin, Austin, Texas 78712, United States
| | - Zhifeng Jing
- Department of Biomedical Engineering at The University of Texas at Austin, Austin, Texas 78712, United States
| | - Pengyu Ren
- Department of Biomedical Engineering at The University of Texas at Austin, Austin, Texas 78712, United States
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Bauer L, Antunović M, Gallego-Ferrer G, Ivanković M, Ivanković H. PCL-Coated Multi-Substituted Calcium Phosphate Bone Scaffolds with Enhanced Properties. Materials (Basel) 2021; 14:4403. [PMID: 34442926 DOI: 10.3390/ma14164403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/21/2021] [Accepted: 08/03/2021] [Indexed: 11/16/2022]
Abstract
Ionic substitutions within the hydroxyapatite lattice are a widely used approach to mimic the chemical composition of the bone mineral. In this work, Sr-substituted and Mg- and Sr-co-substituted calcium phosphate (CaP) scaffolds, with various levels of strontium and magnesium substitution, were prepared using the hydrothermal method at 200 °C. Calcium carbonate skeletons of cuttlefish bone, ammonium dihydrogenphosphate (NH4H2PO4), strontium nitrate (Sr(NO3)2), and magnesium perchlorate (Mg(ClO4)2) were used as reagents. Materials were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Whole powder pattern decomposition refinements of XRD data indicated that increased magnesium content in the Mg- and Sr-co-substituted scaffolds was related to an increased proportion of the whitlockite (WH) phase in the biphasic hydroxyapatite (HAp)/WH scaffolds. In addition, refinements indicate that Sr2+ ions have replaced Ca2+ sites in the WH phase. Furthermore, PCL-coated Mg-substituted and Sr- and Mg-co-substituted scaffolds, with the HAp:WH wt. ratio of 90:10 were prepared by vacuum impregnation. Results of compression tests showed a positive impact of the WH phase and PCL coating on the mechanical properties of scaffolds. Human mesenchymal stem cells (hMSCs) were cultured on composite scaffolds in an osteogenic medium for 21 days. Immunohistochemical staining showed that Mg-Sr-CaP/PCL scaffold exhibited higher expression of collagen type I than the Mg-CaP/PCL scaffold, indicating the positive effect of Sr2+ ions on the differentiation of hMSCs, in concordance with histology results. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) analysis confirmed an early stage of osteogenic differentiation.
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Li T, Xu W, Liu C, He J, Wang Q, Zhang D, Sui K, Zhang Z, Sun H, Yang K, Tan L, Shao H. Anticancer Effect of Biodegradable Magnesium on Hepatobiliary Carcinoma: An In Vitro and In Vivo Study. ACS Biomater Sci Eng 2021; 7:2774-2782. [PMID: 34030441 DOI: 10.1021/acsbiomaterials.1c00288] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Biliary-stent implantation has become an effective treatment for patients with malignant obstructive jaundice caused by hepatobiliary carcinoma. Stent restenosis due to tumor ingrowth is a common problem. In this study, we assessed a biodegradable form of magnesium (Mg) for its anticancer effect on hepatobiliary carcinoma, compared to the conventional stent material of titanium (Ti). The results showed that a Mg extract inhibited proliferation and induced apoptosis in human cholangiocarcinoma cells, while a Mg plate inhibited cell adhesion and destroyed the cytoskeleton in the process of biodegradation. In animal experiments with H22 tumor-bearing mice, Mg wires implanted in tumors exhibited an inhibitory effect on their growth compared with Ti wires. Fifteen days after implantation of metal wires, the mean tumor volume and weight in the Mg group were significantly smaller than in the Ti group. We observed the dynamic-degradation process of Mg wires in tumors and generation of H2 gas via soft X-ray photography and scanning electron microscopy. Histopathological analyses showed that apoptosis of tumor cells around Mg wires significantly increased, expression of carbonic anhydrase 9 significantly decreased, and the upstream protein hypoxia-inducible factor 1-alpha also decreased to some extent. Taken together, these results indicated that biodegradable Mg had antitumor properties both in vitro and in vivo, suggesting its potential application as a novel material for biodegradable biliary stents.
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Affiliation(s)
- Tian Li
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Wenhan Xu
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang 110001, China.,Department of Ultrasound Medicine, Huashan Hospital of Fudan University, Shanghai 200040, China
| | - Chong Liu
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Jintong He
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Qingchuan Wang
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110001, China
| | - Danyang Zhang
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Kaida Sui
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Zhoubo Zhang
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Hao Sun
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang 110001, China
| | - Ke Yang
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110001, China
| | - Lili Tan
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110001, China
| | - Haibo Shao
- Department of Interventional Radiology, The First Hospital of China Medical University, Shenyang 110001, China
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Hamidatou L, Slamene H, Dbacha B, Aït-Ziane M, Badreddine A, Benaskeur N, Benkharfia H, Alliti M, Attari K, Hachouf M, Djebli K, Lounis-Mokrani Z. Experimental determination and simulation of neutron and gamma flux parameters in horizontal channel for Prompt Gamma Neutron activation analysis implementation at Es-Salam research reactor. Appl Radiat Isot 2021; 174:109759. [PMID: 33965688 DOI: 10.1016/j.apradiso.2021.109759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 04/25/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
Since 2004, the k0-standardization method has been applied and evaluated in three experimental channels at Es-Salam research reactor of the Algerian Centre de Recherche Nucléaire de Birine (CRNB). The NAA laboratory at CRNB is well involved in the implementation of the Prompt Gamma Neutron Activation Analysis to extend the field of analyses to some additional elements to the NAA method. In the frame work of the PGNAA research project, several works have been carried out in the present study including the experimental and simulation characterization of neutron and gamma flux parameters of the horizontal channel. The absolute and relative neutron fluxes of the studied channel have been determined by using a set of monitors including Al, Au, Cu, Fe and Zr. Furthermore, measurements of gamma and thermal neutron doses have been achieved using LiF: Mg, Ti (TLD 600 and TLD 700) detectors. The gamma dose rate at the experimental channel center position was found to be 0.6 Gy/min·MW. The experimental results obtained in this study have been used as input information for simulations and design of neutron facilities and radiation shielding, which are successfully established by SCALE code. The results were compared in terms of spectral detail and precision and a good agreement has been revealed. The value of the thermal neutron flux was found to be (6.29 ± 0.25) E+08 n/cm2.s which allows the implementation of PGNAA at the Es-Salam research reactor.
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Affiliation(s)
- L Hamidatou
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria.
| | - H Slamene
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - B Dbacha
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | | | | | - N Benaskeur
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - H Benkharfia
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - M Alliti
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - K Attari
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - M Hachouf
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
| | - K Djebli
- Nuclear Research Centre of Birine, PoBox 180, Ain Oussera, 17200, Djelfa, Algeria
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Tan S, Wang Y, Du Y, Xiao Y, Zhang S. Injectable bone cement with magnesium-containing microspheres enhances osteogenesis via anti-inflammatory immunoregulation. Bioact Mater 2021; 6:3411-3423. [PMID: 33842737 PMCID: PMC8010581 DOI: 10.1016/j.bioactmat.2021.03.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/23/2021] [Accepted: 03/02/2021] [Indexed: 01/06/2023] Open
Abstract
Injectable bone cement is especially useful in minimally invasive surgeries to repair small and irregular bone defects. Amongst different kinds of injectable bone cements, bioactive calcium phosphate bone cement (CPC) has been widely studied due to its biological activity. However, its dense structure and poor biodegradability prevent the ingrowth of living tissue, which leads to undesirable bone regeneration and clinical translation. To address this issue, we prepared bone cement based on Magnesium-containing microspheres (MMSs) that can not only be cured into a 3D porous scaffold but also have controllable biodegradability that continuously provides space for desired tissue ingrowth. Interestingly, magnesium ions released from MMSs cement (MMSC) trigger positive immunomodulation via upregulation of the anti-inflammatory genes IL-10 and M2 macrophage polarization with increased expression of CD206, which is beneficial to osteogenesis. Moreover, the physicochemical properties of MMSC, including heat release, rheology and setting time, can be tuned to meet the requirements of injectable bone cement for clinical application. Using a rat model, we have demonstrated that MMSC promoted osteogenesis via mediation of tissue ingrowth and anti-inflammatory immunomodulation. The study provides a paradigm for the design and preparation of injectable bone cements with 3D porous structures, biodegradability and anti-inflammatory immunoregulation to efficiently promote osteogenesis.
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Affiliation(s)
- Shenglong Tan
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, 430074, China.,Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.,Institute of Regulatory Science for Medical Devices, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yifan Wang
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, 430074, China.,Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.,Institute of Regulatory Science for Medical Devices, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yingying Du
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, 430074, China.,Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.,Institute of Regulatory Science for Medical Devices, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Yin Xiao
- Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, 60 Musk Ave, Kelvin Grove, Brisbane, Queensland, 4059, Australia.,Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, 60 Musk Ave, Kelvin Grove, Brisbane, Queensland, 4059, Australia
| | - Shengmin Zhang
- Advanced Biomaterials and Tissue Engineering Center, Huazhong University of Science and Technology, Wuhan, 430074, China.,Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.,Institute of Regulatory Science for Medical Devices, Huazhong University of Science and Technology, Wuhan, 430074, China
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Bavani NG, Saneei P, Hassanzadeh Keshteli A, Yazdannik A, Falahi E, Sadeghi O, Esmaillzadeh A. Magnesium intake, insulin resistance and markers of endothelial function among women. Public Health Nutr 2021;:1-9. [PMID: 33719988 DOI: 10.1017/S1368980021001063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE We investigated the association of dietary Mg intake with insulin resistance and markers of endothelial function among Iranian women. DESIGN A cross-sectional study. SETTING Usual dietary intakes were assessed using a validated FFQ. Dietary Mg intake was calculated by summing up the amount of Mg in all foods. A fasting blood sample was taken to measure serum concentrations of glycemic indices (fasting plasma glucose and insulin) and endothelial function markers (E-selectin, soluble intercellular adhesion molecule-1 (sICAM-1) and soluble vascular cell adhesion molecule-1). Insulin resistance and sensitivity were estimated using the Homeostasis Model Assessment-Insulin Resistance (HOMA-IR), Homeostasis Model Assessment β-cell function (HOMA-β) and quantitative insulin sensitivity check index (QUICKI). PARTICIPANTS Iranian female nurses (n 345) selected by a multistage cluster random sampling method. RESULTS The Mg intake across energy-adjusted quartiles was 205 (se 7), 221·4 (se 8), 254·3 (se 7) and 355·2 (se 9) mg/d, respectively. After adjustments for potential confounders, QUICKI level was significantly different across quartiles of Mg intake (Q1: 0·34 (se 0·02), Q2: 0·36 (se 0·01), Q3: 0·40 (se 0·01), and Q4: 0·39 (se 0·02), P = 0·02); however, this association disappeared after considering markers of endothelial function, indicating that this relation might be mediated through endothelial dysfunction. After controlling for all potential confounders, Mg intake was inversely, but not significantly, associated with serum concentrations of sICAM (Q1: 239 (se 17), Q2: 214 (se 12), Q3: 196 (se 12), and Q4: 195 (se 17), P = 0·29). There was no other significant association between dietary Mg intake and other indicators of glucose homoeostasis or endothelial markers. CONCLUSIONS Higher dietary Mg intake was associated with better insulin sensitivity in Iranian females. This linkage was mediated through reduced endothelial dysfunction.
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Mota J, Merlo E, Martínez-Hernández F, Mendoza-Fernández AJ, Pérez-García FJ, Salmerón-Sánchez E. Plants on Rich-Magnesium Dolomite Barrens: A Global Phenomenon. Biology (Basel) 2021; 10:38. [PMID: 33429992 PMCID: PMC7826976 DOI: 10.3390/biology10010038] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 12/24/2020] [Accepted: 01/05/2021] [Indexed: 11/21/2022]
Abstract
For botanists and ecologists, the close link between some plants and substrates, such as serpentine or gypsum, is well known. However, the relationship between dolomite and its flora has been much less studied, due to various causes. Its diffuse separation from limestone and the use of a vague approach and terminology that, until now, no one has tried to harmonize are among these reasons. After carrying out an extensive review, completed with data on the distribution of plants linked to dolomite, the territories in which this type of flora appears at a global level were mapped using a geographic information system software. In addition, data on soils were collected, as well as on their influence on the ionomic profile of the flora. These data were completed with the authors' own information from previous research, which also served to assess these communities' degree of conservation and the genetic diversity of some of their characteristic species. The results showed that the so-called "dolomite phenomenon" is widely represented and is clearly manifested in the appearance of a peculiar flora, very rich in endemisms, on dry soils, poor in nutrients, and with a high Mg level. Although dolomite habitats cause adaptations in plants which are even more recognizable than those of other rock types, they have not been widely studied from an ecological, evolutionary, and conservation point of view because, so far, neither their characteristics nor their universal demarcation have been precisely defined.
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Affiliation(s)
- Juan Mota
- Departamento de Biología y Geología, CEI·MAR and CECOUAL, Universidad de Almería, 04120 Almería, Spain; (J.M.); (E.M.); (F.M.-H.); (A.J.M.-F.); (F.J.P.-G.)
| | - Encarna Merlo
- Departamento de Biología y Geología, CEI·MAR and CECOUAL, Universidad de Almería, 04120 Almería, Spain; (J.M.); (E.M.); (F.M.-H.); (A.J.M.-F.); (F.J.P.-G.)
| | - Fabián Martínez-Hernández
- Departamento de Biología y Geología, CEI·MAR and CECOUAL, Universidad de Almería, 04120 Almería, Spain; (J.M.); (E.M.); (F.M.-H.); (A.J.M.-F.); (F.J.P.-G.)
| | - Antonio J. Mendoza-Fernández
- Departamento de Biología y Geología, CEI·MAR and CECOUAL, Universidad de Almería, 04120 Almería, Spain; (J.M.); (E.M.); (F.M.-H.); (A.J.M.-F.); (F.J.P.-G.)
- Departamento de Botánica, Unidad de Conservación Vegetal, Universidad de Granada, 18071 Granada, Spain
| | - Francisco Javier Pérez-García
- Departamento de Biología y Geología, CEI·MAR and CECOUAL, Universidad de Almería, 04120 Almería, Spain; (J.M.); (E.M.); (F.M.-H.); (A.J.M.-F.); (F.J.P.-G.)
| | - Esteban Salmerón-Sánchez
- Departamento de Biología y Geología, CEI·MAR and CECOUAL, Universidad de Almería, 04120 Almería, Spain; (J.M.); (E.M.); (F.M.-H.); (A.J.M.-F.); (F.J.P.-G.)
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Robberecht H, Verlaet AAJ, Breynaert A, De Bruyne T, Hermans N. Magnesium, Iron, Zinc, Copper and Selenium Status in Attention-Deficit/Hyperactivity Disorder (ADHD). Molecules 2020; 25:molecules25194440. [PMID: 32992575 PMCID: PMC7583976 DOI: 10.3390/molecules25194440] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 12/21/2022] Open
Abstract
In this study, we critically review the literature concerning the relation of Mg, Fe, Zn, Cu and Se and attention-deficit/hyperactivity disorder (ADHD). Elemental status is estimated using peripheral blood parameters, hair, urine, daily intake and response to supplementation. The observed associations between concentration levels of the elements Mg, Fe, Zn, Cu and Se and ADHD symptoms are contradictory. This is partly due to the heterogeneity and complexity of the disorder. As a trend, lower ferritin and zinc levels can be observed. However, this correlation is not causative, as illustrated by placebo-controlled trials reporting conflicting evidence on the efficacy of supplementation. Well-defined studies on changes in concentration levels of the elements in relation to ADHD symptoms before and after treatment with therapeutics it will be possible to shed more light on the significance of these elements in this behavioral disorder. The discussion on whether a change in concentration of an element is cause or consequence of ADHD is not within the scope of this article.
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Kim SO, Yang WS, Kim SJ. Effects of the Combined Addition of Zn and Mg on Corrosion Behaviors of Electropainted AlSi-Based Metallic Coatings Used for Hot-Stamping Steel Sheets. Materials (Basel) 2020; 13:E3379. [PMID: 32751560 DOI: 10.3390/ma13153379] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 11/17/2022]
Abstract
The effects of the combined addition of Zn and Mg on the corrosion resistance of AlSi-based coating for automotive steel sheets were investigated using a variety of analytical and electrochemical techniques. The preferential dissolution of Mg and Zn from MgZn2/Mg2Si phases occurred on the AlSi-based coating that had been alloyed with a smaller portion of Zn and Mg, which contributed to the rapid surface coverage by corrosion products with a protective nature, reducing the corrosion current density. On the other hand, localized corrosion attacks caused by the selective dissolution of Mg were also observed in the AlSi-based coating with a smaller portion of Zn and Mg. Such alloying can also worsen its corrosion resistance when coated additionally with electrodeposited paint. The mechanistic reasons for these conflicting results are also discussed.
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Secchi V, Franchi S, Dettin M, Zamuner A, Beranová K, Vladescu A, Battocchio C, Graziani V, Tortora L, Iucci G. Hydroxyapatite Surfaces Functionalized with a Self-Assembling Peptide: XPS, RAIRS and NEXAFS Study. Nanomaterials (Basel) 2020; 10:nano10061151. [PMID: 32545421 PMCID: PMC7353169 DOI: 10.3390/nano10061151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/07/2020] [Accepted: 06/09/2020] [Indexed: 11/16/2022]
Abstract
Hydroxyapatite (HAP) coatings can improve the biocompatibility and bioactivity of titanium alloys, such as Ti6Al4V, commonly used as material for orthopedic prostheses. In this framework, we have studied the surface of HAP coatings enriched with Mg and either Si or Ti deposited by RF magnetron sputtering on Ti6Al4V. HAP coatings have been furtherly functionalized by adsorption of a self-assembling peptide (SAP) on the HAP surface, with the aim of increasing the material bioactivity. The selected SAP (peptide sequence AbuEAbuEAbuKAbuKAbuEAbuEAbuKAbuK) is a self-complementary oligopeptide able to generate extended ordered structures by self-assembling in watery solutions. Samples were prepared by incubation of the HAP coatings in SAP solutions and subsequently analyzed by X-Ray Photoelectron Spectroscopy (XPS), Fourier Transform Infrared (FTIR) and Near Edge X-Ray Absorption Fine Structure (NEXAFS) spectroscopies, in order to determine the amount of adsorbed peptide, the peptide stability and the structure of the peptide overlayer on the HAP coatings as a function of the HAP substrate and of the pH of the mother SAP solution. Experimental data yielded evidence of SAP adsorption on the HAP surface, and peptide overlayers showed ordered structure and molecular orientation. The thickness of the SAP overlayer depends on the composition of the HAP coating.
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Affiliation(s)
- Valeria Secchi
- Department of Science, Roma Tre University, Via della Vasca Navale 79, 00146 Rome, Italy; (V.S.); (C.B.); (L.T.)
- Department of Materials Science, University of Milano-Bicocca, Via Cozzi 55, 20125 Milan, Italy
| | - Stefano Franchi
- Department of Science, Roma Tre University, Via della Vasca Navale 79, 00146 Rome, Italy; (V.S.); (C.B.); (L.T.)
- Institute of Structure of Matter (ISM), National Research Council (CNR), Via Fosso del Cavaliere 100, 00133 Rome, Italy
- Correspondence: (S.F.); (G.I.)
| | - Monica Dettin
- Department of Industrial Engineering, University of Padua, Via Marzolo 9, 35131 Padua, Italy; (M.D.); (A.Z.)
| | - Annj Zamuner
- Department of Industrial Engineering, University of Padua, Via Marzolo 9, 35131 Padua, Italy; (M.D.); (A.Z.)
| | - Klára Beranová
- Materials Science Beamline, Elettra Sincrotrone Trieste SCpA, Strada Statale 14, km 163.5, 34149 Basovizza-Trieste, Italy;
| | - Alina Vladescu
- Department for Advanced Surface Processing and Analysis by Vacuum Technologies, National Institute of Research and Development for Optoelectronics, 409 Atomistilor St., 077125 Magurele, Romania;
- Physical Materials Science and Composite Materials Centre, National Research Tomsk Polytechnic University, Lenin Avenue 43, 634050 Tomsk, Russia
| | - Chiara Battocchio
- Department of Science, Roma Tre University, Via della Vasca Navale 79, 00146 Rome, Italy; (V.S.); (C.B.); (L.T.)
| | - Valerio Graziani
- Surface Analysis Laboratory, INFN University Roma Tre, via della Vasca Navale 84, 00146 Rome, Italy;
| | - Luca Tortora
- Department of Science, Roma Tre University, Via della Vasca Navale 79, 00146 Rome, Italy; (V.S.); (C.B.); (L.T.)
- Surface Analysis Laboratory, INFN University Roma Tre, via della Vasca Navale 84, 00146 Rome, Italy;
| | - Giovanna Iucci
- Department of Science, Roma Tre University, Via della Vasca Navale 79, 00146 Rome, Italy; (V.S.); (C.B.); (L.T.)
- Correspondence: (S.F.); (G.I.)
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Yan Y, Liu X, Xiong H, Zhou J, Yu H, Qin C, Wang Z. Stearic Acid Coated MgO Nanoplate Arrays as Effective Hydrophobic Films for Improving Corrosion Resistance of Mg-Based Metallic Glasses. Nanomaterials (Basel) 2020; 10:E947. [PMID: 32429290 DOI: 10.3390/nano10050947] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 11/16/2022]
Abstract
Mg-based metallic glasses (MGs) are widely studied due to their high elasticity and high strength originating from their amorphous nature. However, their further application in many potential fields is limited by poor corrosion resistance. In order to improve this property, an MgO nanoplate array layer is first constructed on the surface of Mg-based MGs by cyclic voltammetry (CV) treatments. In this situation, the corrosion resistance and hydrophilicity of the material are enhanced. Then, stearic acid (SA) can effectively adhere onto the surface of the MgO layer to form a superficial hydrophobic film with a water contact angle (WCA) of 131°. As a result, the SA coated MgO hydrophobic film improves the corrosion resistance of Mg-based MGs in 3.5 wt.% NaCl solution obviously. In addition, the effects of four technological parameters (solution concentration, sweep rate, cycle number, and reaction temperature) in the CV process on the morphology and size of nano-products are investigated in detail. The work proposes a new method for the creation of nanostructures on the surface of materials and provides a new idea to increase the corrosion resistance of MGs. The related method is expected to be applied in wider fields in future.
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Wang W, Wu H, Sun Y, Yan J, Zhang L, Zhang S, Ni J, Song Y, Zhang X. Local intragranular misorientation accelerates corrosion in biodegradable Mg. Acta Biomater 2020; 101:575-585. [PMID: 31672584 DOI: 10.1016/j.actbio.2019.10.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/27/2019] [Accepted: 10/24/2019] [Indexed: 01/20/2023]
Abstract
Mg-based implants are used in biomedical applications predominantly because of their degradable property. In this paper, the effect of local misorientations (intragranular misorientation) on the corrosion behavior of high-purity Mg (HPM) was systematically investigated according to microstructure characterization and corrosion measurements. The results showed that local misorientation introduced into grains by deformation could result in corrosion around the grain boundary (GB), which ultimately reduces the corrosion resistance of HPM. After removing the local misorientation by annealing, the corrosion around GB could be eliminated. This work is expected to inspire better control over the degradation behaviors of biomedical Mg through microstructure design to be used for various biomedical applications. STATEMENT OF SIGNIFICANCE: 1. Fine grains, fine grains with large local misorientation, and coarse grains could be obtained, respectively, in high-purity Mg by sequential hot rolling, compression deformation, and annealing treatments. 2. Large local misorientation introduced into grains could lead to corrosion around the grain boundary and ultimately reduce corrosion resistance. 3. In the absence of local misorientation, refining grain size could improve the corrosion resistance of Mg.
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Abstract
Cannulated screws have a structure for inserting a guide wire inside them to effectively correct complicated fractures. Magnesium, an absorbable metal used to manufacture cannulated screws, may decompose in the body after a certain period of implantation. The hydrogel formed by hyaluronic acid (HA) and polygalacturonic acid (PGA) has been used into Mg-based cannulated screws to prevent bone resorption owing to the rapid corrosion of Mg with unfavorable mechanical properties and a high ambient pH. In addition, Ca ions were added to the gel for cross-linking the carboxyl groups to modify the gelation rate and physical properties of the gel. The developed hydrogels were injected into the Mg-based cannulated screws, after which they released HA and Ca. The possibility of the application of this system as a cannulated screw was evaluated based on the corrosion resistance, gel degradation rate, HA release, toxicity toward osteocytes, and experiments involving the implantation of the screws into the femurs of rats. Ca ions first bound to PGA and delayed the gelation time and dissolution rate. However, they interfered with HA binding and increased the elution of HA at the beginning of gel degradation. Ca(NO3)2 concentrations higher than 0.01 M and low pH environments inhibited osteoblast differentiation and proliferation, owing to the elution of HA from the hydrogel. On the other hand, when the HA hydrogel with a proper amount of Ca was inserted into a magnesium screw, the degradation of Mg was delayed, and the presence of the gel contributed to new bone formation and osteocyte expansion.
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Affiliation(s)
- Yu-Kyoung Kim
- Department of Dental Biomaterials and Institute of Biodegradable Materials, Institute of Oral Bioscience and School of Dentistry (Plus BK21 Program), Chonbuk National University, Jeon Ju 561-756, South Korea
| | - Seo-Young Kim
- Department of Dental Biomaterials and Institute of Biodegradable Materials, Institute of Oral Bioscience and School of Dentistry (Plus BK21 Program), Chonbuk National University, Jeon Ju 561-756, South Korea
| | - Se Hwan Lee
- Department of Orthopedic Surgery, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Chonbuk National University Medical School, Jeon Ju 561-756, South Korea
| | - Min-Ho Lee
- Department of Dental Biomaterials and Institute of Biodegradable Materials, Institute of Oral Bioscience and School of Dentistry (Plus BK21 Program), Chonbuk National University, Jeon Ju 561-756, South Korea
| | - Kwang-Bok Lee
- Department of Orthopedic Surgery, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute of Chonbuk National University Hospital, Chonbuk National University Medical School, Jeon Ju 561-756, South Korea
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Jurczyk MU, Żurawski J, Wirstlein PK, Kowalski K, Jurczyk M. Response of inflammatory cells to biodegradable ultra-fine grained Mg-based composites. Micron 2019; 129:102796. [PMID: 31821933 DOI: 10.1016/j.micron.2019.102796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 11/26/2019] [Accepted: 11/28/2019] [Indexed: 11/29/2022]
Abstract
Ultra-fine grained biodegradable Mg-based Mg1Zn1Mn0.3 Zr - HA and Mg4Y5.5Dy0.5 Zr - 45S5 Bioglass composites have shown great medical potential. Two types of these Mg-based biomaterials subjected to different treatments were tested and as shown earlier they are biocompatible. The aim of the study is to determine how much culture media incubated with these ultra-fine trained Mg-based composites can cause inflammatory reactions and /or periodontal cell death. The incubation of composites in the medium releases metal ions into the solution. It can be assumed that this process is permanent and also occurs in the human body. The results have shown that the effect of proinflammatory IL-6 and TNF- cytokines results in the strongest production of the acute phase proteins in the first day on the Mg1Zn1Mn0.3 Zr-5 wt.% HA-1 wt. % Ag HF-treated biocomposite after immersion for 2 h in 40 % HF and then the fastest decrease in these processes on the third day. In turn, the inflammatory process induced on the Mg1Zn1Mn0.3 Zr-5 wt.% HA-1 wt. % Ag biomaterial, in BAX / BCL ratio assessment, is the strongest on the third day and maintains a significantly high level on the following day, which, at the same time, confirms its persistence and development. In addition, these results confirm the successively generated necrotic processes. Ions can induce inflammatory reactions, which in the case of the implant may take a long time, which results in the loss of the implant. Even if the material is biocompatible in rapid in-vitro tests, it can induce inflammation in the body after some time due to the release of ions. Not every treatment improves the material's properties in terms of subsequent safety.
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Affiliation(s)
- Mieczyslawa U Jurczyk
- Division of Mother's and Child's Health, Poznan University of Medical Sciences, Polna 33, 60-535, Poznan, Poland.
| | - Jakub Żurawski
- Department of Immunobiochemistry, Chair of Biology and Environmental Sciences, Poznan University of Medical Sciences, Rokietnicka 8, 60-806, Poznan, Poland.
| | - Przemyslaw K Wirstlein
- Department of Gynaecology and Obstetrics, Division of Reproduction, Poznan University of Medical Sciences, Polna 33, 60-535, Poznan, Poland.
| | - Kamil Kowalski
- Faculty of Mechanical Engineering and Management, Institute of Materials Science and Engineering, Poznan University of Technology, Jana Pawła II 24, 61138, Poznan, Poland.
| | - Mieczyslaw Jurczyk
- Faculty of Mechanical Engineering and Management, Institute of Materials Science and Engineering, Poznan University of Technology, Jana Pawła II 24, 61138, Poznan, Poland.
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Marshall NS, Serinel Y, Killick R, Child JM, Raisin I, Berry CM, Lallukka T, Wassing R, Lee RW, Ratnavadivel R, Vedam H, Grunstein R, Wong KK, Hoyos CM, Cayanan EA, Comas M, Chapman JL, Yee BJ. Magnesium supplementation for the treatment of restless legs syndrome and periodic limb movement disorder: A systematic review. Sleep Med Rev 2019; 48:101218. [PMID: 31678660 DOI: 10.1016/j.smrv.2019.101218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 10/02/2019] [Accepted: 10/07/2019] [Indexed: 10/25/2022]
Abstract
Magnesium supplementation is often suggested for restless legs syndrome (RLS) or period limb movement disorder (PLMD) based on anecdotal evidence that it relieves symptoms and because it is also commonly recommended for leg cramps. We aimed to review all articles reporting the effects of magnesium supplementation on changes in RLS and/or PLMD. We conducted a systematic search looking for all relevant articles and then two reviewers read all article titles and abstracts to identify relevant studies. Eligible studies were scored for their quality as interventional trials. We found 855 abstracts and 16 of these could not be definitively excluded for not addressing all aspects of our research question. Seven full-text articles were unlocatable and one was ineligible which left eight studies with relevant data. One was a randomised placebo-controlled trial, three were case series and four were case studies. The RCT did not find a significant treatment effect of magnesium but may have been underpowered. After quality appraisal and synthesis of the evidence we were unable to make a conclusion as to the effectiveness of magnesium for RLS/PLMD. It is not clear whether magnesium helps relieve RLS or PLMD or in which patient groups any benefit might be seen.
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Affiliation(s)
- Nathaniel S Marshall
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Faculty of Medicine and Health, Sydney Nursing School, The University of Sydney, Sydney, Australia.
| | - Yasmina Serinel
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Department of Respiratory and Sleep Medicine, Nepean Hospital, Kingswood, NSW, Australia
| | - Roo Killick
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia
| | - Julia M Child
- University Library, The University of Sydney, Sydney, Australia
| | - Isabelle Raisin
- University Library, The University of Sydney, Sydney, Australia
| | - Callum M Berry
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Faculty of Medicine and Health, Sydney Nursing School, The University of Sydney, Sydney, Australia
| | - Tea Lallukka
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Faculty of Medicine, Department of Public Health, University of Helsinki, Finland
| | - Rick Wassing
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia
| | - Richard Ww Lee
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia
| | - Rajeev Ratnavadivel
- Central Coast Local Health Network, NSW, Australia; Faculty of Health and Medicine, University of Newcastle, Australia
| | - Hima Vedam
- Department of Respiratory and Sleep Medicine, Liverpool Hospital, Australia; South Western Sydney Clinical School, University of New South Wales, Australia; Ingham Institute of Applied Medical Research, Sydney, New South Wales, Australia
| | - Ron Grunstein
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital Camperdown NSW Australia
| | - Keith Kh Wong
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital Camperdown NSW Australia
| | - Camilla M Hoyos
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Faculty of Science, School of Psychology, The University of Sydney, Sydney, NSW, Australia
| | - Elizabeth A Cayanan
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Faculty of Medicine and Health, Sydney Nursing School, The University of Sydney, Sydney, Australia
| | - Maria Comas
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia
| | - Julia L Chapman
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia
| | - Brendon J Yee
- Centre for Integrated Research and Understanding of Sleep (CIRUS), Woolcock Institute of Medical Research, The University of Sydney, Australia; Faculty of Medicine and Health, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia; Department of Respiratory and Sleep Medicine, Royal Prince Alfred Hospital Camperdown NSW Australia
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Li D, Yu K, Xiao T, Dai Y, Liu L, Li H, Jiang D, Xiong L. LOC103691336/miR-138-5p/BMPR2 axis modulates Mg-mediated osteogenic differentiation in rat femoral fracture model and rat primary bone marrow stromal cells. J Cell Physiol 2019; 234:21316-21330. [PMID: 31081160 DOI: 10.1002/jcp.28736] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 03/27/2019] [Accepted: 04/10/2019] [Indexed: 12/26/2022]
Abstract
Intramedullary stabilization is frequently used to treat long bone fractures. Since implant removal can become technically very challenging with the potential to cause further tissue damage, biodegradable materials are emerging as alternative options. Magnesium (Mg)-based biodegradable implants have a controllable degradation rate and good tissue compatibility, which makes them attractive for musculoskeletal research. Herein, the degradation of Mg and steel implants, the pathological characteristics and osteoblast differentiation in mice femora were examined. To investigate the molecular mechanism, we analyzed the differentially expressed long noncoding RNAs (lncRNAs) and messenger RNAs (mRNAs) in Mg-implanted or stain-steel-implanted callus tissues. lncRNA LOC103691336 was upregulated in Mg-implanted tissues and most relevant to BMPR2, a kinase receptor of BMPs with an established role in osteogenesis. The knockdown of LOC103691336 attenuated Mg-mediated osteogenic differentiation. Furthermore, miR-138-5p, previously reported to inhibit osteogenic differentiation, could bind to LOC103691336 and BMPR2 in bone marrow stromal cells (BMSCs). LOC103691336 competed with BMPR2 for miR-138-5p binding in BMSCs to attenuate the inhibitory effect of miR-138-5p on BMPR2 expression. Finally, the effect of LOC103691336 knockdown on Mg-mediated osteogenic differentiation could be attenuated by miR-138-5p inhibition. In conclusion, we provided a novel mechanism of Mg implants mediating the osteogenesis differentiation and demonstrated that Mg implants may be promising for improving fracture healing.
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Affiliation(s)
- Ding Li
- School of Materials Science and Engineering, Central South University, Changsha, China.,Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China.,Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Kun Yu
- School of Materials Science and Engineering, Central South University, Changsha, China.,Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Tao Xiao
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China.,Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Yilong Dai
- School of Materials Science and Engineering, Central South University, Changsha, China
| | - Lihong Liu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China.,Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Hui Li
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China.,Orthopedic Biomedical Materials Engineering Laboratory of Hunan Province, Changsha, China
| | - Dayue Jiang
- School of Materials Science and Engineering, Central South University, Changsha, China
| | - Liang Xiong
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
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Yoshino M, Ando Y, Deki M, Toyabe T, Kuriyama K, Honda Y, Nishimura T, Amano H, Kachi T, Nakamura T. Fully Ion Implanted Normally-Off GaN DMOSFETs with ALD-Al₂O₃ Gate Dielectrics. Materials (Basel) 2019; 12:E689. [PMID: 30813566 DOI: 10.3390/ma12050689] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 02/14/2019] [Accepted: 02/20/2019] [Indexed: 11/17/2022]
Abstract
A normally-off GaN double-implanted vertical MOSFET (DMOSFET) with an atomic layer deposition (ALD)-Al₂O₃ gate dielectric film on a free-standing GaN substrate fabricated by triple ion implantation is presented. The DMOSFET was formed with Si ion implanted source regions in a Mg ion implanted p-type base with N ion implanted termination regions. A maximum drain current of 115 mA/mm, maximum transconductance of 19 mS/mm at a drain voltage of 15 V, and a threshold voltage of 3.6 V were obtained for the fabricated DMOSFET with a gate length of 0.4 μm with an estimated p-type base Mg surface concentration of 5 × 1018 cm-3. The difference between calculated and measured Vths could be due to the activation ratio of ion-implanted Mg as well as Fermi level pinning and the interface state density. On-resistance of 9.3 mΩ·cm² estimated from the linear region was also attained. Blocking voltage at off-state was 213 V. The fully ion implanted GaN DMOSFET is a promising candidate for future high-voltage and high-power applications.
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44
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Kang N, Liu J, Zhao Y. Dissociation mechanism of GDP from Cdc42 via DOCK9 revealed by molecular dynamics simulations. Proteins 2019; 87:433-442. [PMID: 30714195 DOI: 10.1002/prot.25665] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 01/28/2019] [Accepted: 01/31/2019] [Indexed: 12/18/2022]
Abstract
Cell division control protein 42 homolog (Cdc42) influences a variety of cellular responses such as cell migration and polarity. Deregulation of Cdc42 has been associated with several human diseases and developmental disorders. Over-activation of Cdc42 through guanine nucleotide exchange factor (GEF) is a critical event for Cdc42 involved cancer metastasis. Members of DOCK family of GEF are important activators of Cdc42. However, this activation mechanism is still unknown. Molecular dynamics (MD) simulations and molecular mechanics-Poisson-Boltzmann surface area (MM-PBSA) calculations were employed to investigate the central step of the activation of Cdc42: the dissociation mechanism of GDP from Cdc42 via DOCK9. Simulation results show that Mg2+ ion has a remarkable influence on the conformational change of switch I of Cdc42 through residue Pro34 which functions as a "clasp" to control the flexibility of switch I. In the GDP dissociation process, the Mg2+ ion leave first to result in a suitable conformation of Cdc42 for following DOCK9 binding to. When DOCK9 binds to Cdc42, it changes the orientations of residues Lys16, Thr17, Cys18 and Phe28 of Cdc42 to weaken the interactions between Cdc42 and GDP to release GDP. This study first elucidates the dissociation mechanism of GDP from Cdc42 via DOCK9 and identifies the essential residues of Cdc42 in this process. These simulation results are consistent with the recent findings of biochemical and amino acid mutational studies, and the observations are beneficial to understand the activation mechanism of Cdc42 and to provide insights for designing compounds targeting on Cdc42 related cancer metastasis.
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Affiliation(s)
- Ning Kang
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
| | - Jiansheng Liu
- Department of Neurology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yaxue Zhao
- School of Pharmacy, Shanghai Jiao Tong University, Shanghai, China
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Abstract
OBJECTIVES We attempted to determine whether a functional polymorphism of TRPM6 (rs2274924) is associated with susceptibility to epilepsy following ischemic stroke, and to further explore the effect of this polymorphism on serum levels of Mg2+ in post-stroke patients. METHODS We carried out a case-control study on 378 post-stroke epilepsy patients and 420 controls (stroke patients without secondary epilepsy). We used DNA sequencing to determine the genotypes of the TRPM6 rs2274924 polymorphism, and used the ion selective electrode method to measure serum levels of Mg2+. RESULTS The distribution of the CC genotype and the frequency of the C allele were significantly higher in the post-stroke epilepsy patients than in the controls (P < 0.01). With regard to the post-stroke epilepsy patients, the serum levels of Mg2+ decreased significantly in the TRPM6 rs2274924 C allele carriers compared to the rs2274924 T allele carriers. CONCLUSION The TRPM6 rs2274924 polymorphism may be associated with susceptibility to epilepsy following stroke, and the C allele may be associated with increased risk of post-stroke epilepsy. The TRPM6 rs2274924 polymorphism may also influence serum levels of Mg2+ in post-stroke epilepsy patients.
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Affiliation(s)
- Chuan-Yi Fu
- a Department of Neurosurgery, The National Key Clinic Specialty, Hainan General Hospital , Hainan Clinical Medicine Research Institution , Haikou , Hainan , P.R. China
| | - Shui-Jie Chen
- a Department of Neurosurgery, The National Key Clinic Specialty, Hainan General Hospital , Hainan Clinical Medicine Research Institution , Haikou , Hainan , P.R. China
| | - Nan-Hua Cai
- a Department of Neurosurgery, The National Key Clinic Specialty, Hainan General Hospital , Hainan Clinical Medicine Research Institution , Haikou , Hainan , P.R. China
| | - Zhao-Hui Liu
- a Department of Neurosurgery, The National Key Clinic Specialty, Hainan General Hospital , Hainan Clinical Medicine Research Institution , Haikou , Hainan , P.R. China
| | - Mao Zhang
- a Department of Neurosurgery, The National Key Clinic Specialty, Hainan General Hospital , Hainan Clinical Medicine Research Institution , Haikou , Hainan , P.R. China
| | - Peng-Cheng Wang
- a Department of Neurosurgery, The National Key Clinic Specialty, Hainan General Hospital , Hainan Clinical Medicine Research Institution , Haikou , Hainan , P.R. China
| | - Jian-Nong Zhao
- a Department of Neurosurgery, The National Key Clinic Specialty, Hainan General Hospital , Hainan Clinical Medicine Research Institution , Haikou , Hainan , P.R. China
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46
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Zhang R, Tutusaus O, Mohtadi R, Ling C. Magnesium-Sodium Hybrid Battery With High Voltage, Capacity and Cyclability. Front Chem 2019; 6:611. [PMID: 30619820 PMCID: PMC6295519 DOI: 10.3389/fchem.2018.00611] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 11/28/2018] [Indexed: 11/24/2022] Open
Abstract
Rechargeable magnesium battery has been widely considered as a potential alternative to current Li-ion technology. However, the lack of appropriate cathode with high-energy density and good sustainability hinders the realization of competitive magnesium cells. Recently, a new concept of hybrid battery coupling metal magnesium anode with a cathode undergoing the electrochemical cycling of a secondary ion has received increased attention. Mg-Na hybrid battery, for example, utilizes the dendritic-free deposition of magnesium at the anode and fast Na+-intercalation at the cathode to reversibly store and harvest energy. In the current work, the principles that take the full advantage of metal Mg anode and Na-battery cathode to construct high-performance Mg-Na hybrid battery are described. By rationally applying such design principle, we constructed a Mg-NaCrO2 hybrid battery using metal Mg anode, NaCrO2 cathode and a mixture of all-phenyl complex (PhMgCl-AlCl3, Mg-APC) and sodium carba-closo-dodecaborate (NaCB11H12) as dual-salt electrolyte. The Mg-NaCrO2 cell delivered an energy density of 183 Wh kg−1 at the voltage of 2.3 V averaged in 50 cycles. We found that the amount of electrolyte can be reduced by using solid MgCl2 as additional magnesium reservoir while maintaining comparable electrochemical performance. A hypothetical MgCl2-NaCrO2 hybrid battery is therefore proposed with energy density estimated to be 215 Wh kg−1 and the output voltage over 2 V.
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Affiliation(s)
- Ruigang Zhang
- Materials Research Department, Toyota Research Institute of North America, Ann Arbor, MI, United States
| | - Oscar Tutusaus
- Materials Research Department, Toyota Research Institute of North America, Ann Arbor, MI, United States
| | - Rana Mohtadi
- Materials Research Department, Toyota Research Institute of North America, Ann Arbor, MI, United States
| | - Chen Ling
- Materials Research Department, Toyota Research Institute of North America, Ann Arbor, MI, United States
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Agha NA, Liu Z, Feyerabend F, Willumeit-Römer R, Gasharova B, Heidrich S, Mihailova B. The effect of osteoblasts on the surface oxidation processes of biodegradable Mg and Mg-Ag alloys studied by synchrotron IR microspectroscopy. Mater Sci Eng C Mater Biol Appl 2018; 91:659-668. [PMID: 30033300 DOI: 10.1016/j.msec.2018.06.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 04/26/2018] [Accepted: 06/05/2018] [Indexed: 11/16/2022]
Abstract
High-resolution analytical methods, including synchrotron infrared microspectroscopy combined with wavelength-dispersive X-ray emission spectroscopy were applied to study the structure and chemical composition of the oxidized layer of pure and Ag-alloyed Mg exposed to cell culture media without and with osteoblasts. Comparative analysis has been done on pure Mg immersed in two different cell culture media: Dulbecco's Modified Eagle's Medium (DMEM) and Roswell Park Memorial Institute medium (RPMI), whereas Mg-xAg binary alloys (x = 2, 4, 6, 8 wt%) were studied after immersion in DMEM. It is shown that the physicochemical formation of degradation products as well as the activity of the biological component is influenced by the addition of silver. It could be demonstrated that the presence of Ag in the Mg alloy enhances the chemical reaction between Mg and C to form amorphous and/or crystalline MgCO3 on account of CaCO3. As a consequence, the further available P and Ca react easily to form Mg-poor amorphous calcium phosphate phases. Osteoblasts actively adjusted these phases towards hydroxyapatite-like phases.
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Affiliation(s)
- Nezha Ahmad Agha
- Institute of Material Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, 21502 Geesthacht, Germany
| | - Zhidan Liu
- Institute of Material Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, 21502 Geesthacht, Germany
| | - Frank Feyerabend
- Institute of Material Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, 21502 Geesthacht, Germany.
| | - Regine Willumeit-Römer
- Institute of Material Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, 21502 Geesthacht, Germany
| | - Billiana Gasharova
- Institut für Beschleunigerphysik und Technologie, Karlsruher Institut für Technologie, P.O. Box 3640, Karlsruhe 76021, Germany
| | - Stefanie Heidrich
- Department Earth Sciences, University of Hamburg, Grindelallee 48, 20146 Hamburg, Germany
| | - Boriana Mihailova
- Department Earth Sciences, University of Hamburg, Grindelallee 48, 20146 Hamburg, Germany
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48
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Kawakita E, Kanasaki K, Hirai T, Tsuda S, Watanabe A, Nitta K, Kitada M, Ogura Y, Takagaki Y, Fujii M, Nagai T, Shimada K, Takagi S, Mizunuma Y, Monno I, Shino F, Minato H, Miyatake N, Nakagawa A, Koya D. Severe electrolytes disorders with the interstitial kidney alterations in the patient with the history of total thyroidectomy and parathyroidectomy: possible role of vitamin D deficiency. Clin Case Rep 2018; 6:983-989. [PMID: 29881548 PMCID: PMC5986046 DOI: 10.1002/ccr3.1500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 02/12/2018] [Accepted: 02/28/2018] [Indexed: 11/23/2022] Open
Abstract
Vitamin D plays vital role for the health, and its deficiency has been implicated in the diverse pathological conditions such as hypomagnesemia and abnormal immune system. Here, we present a case of severe electrolytes disorders (hypokalemia and hypomagnesemia etc.) and kidney damages associated with vitamin D deficiency.
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Affiliation(s)
- Emi Kawakita
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Keizo Kanasaki
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
- Division of Anticipatory Molecular Food Science and TechnologyMedical Research InstituteKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Taro Hirai
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Shin‐ichi Tsuda
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Ai Watanabe
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Kyoko Nitta
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Munehiro Kitada
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
- Division of Anticipatory Molecular Food Science and TechnologyMedical Research InstituteKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Yoshio Ogura
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Yuta Takagaki
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Mizue Fujii
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Takako Nagai
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Keiji Shimada
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Susumu Takagi
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Yuiko Mizunuma
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Itaru Monno
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Fujimoto Shino
- Department of Hematology and ImmunologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Hiroshi Minato
- Department of Pathology and Laboratory MedicineKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Nobuhiko Miyatake
- Department of NephrologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Atsushi Nakagawa
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
| | - Daisuke Koya
- Department of Diabetology & EndocrinologyKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
- Division of Anticipatory Molecular Food Science and TechnologyMedical Research InstituteKanazawa Medical UniversityUchinadaIshikawa920‐0293Japan
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Kim K, Wactawski-Wende J, Michels KA, Schliep KC, Plowden TC, Chaljub EN, Mumford SL. Dietary minerals, reproductive hormone levels and sporadic anovulation: associations in healthy women with regular menstrual cycles. Br J Nutr 2018; 120:81-9. [PMID: 29673411 DOI: 10.1017/S0007114518000818] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Although minerals are linked to several reproductive outcomes, it is unknown whether dietary minerals are associated with ovulatory function. We hypothesised that low intakes of minerals would be associated with an increased risk of anovulation. We investigated associations between dietary mineral intake and both reproductive hormones and anovulation in healthy women in the BioCycle Study, which prospectively followed up 259 regularly menstruating women aged 18-44 years who were not taking mineral supplements for two menstrual cycles. Intakes of ten selected minerals were assessed through 24-h dietary recalls at up to four times per cycle in each participant. Oestradiol, progesterone, luteinising hormone (LH), follicle-stimulating hormone (FSH), sex-hormone-binding globulin and testosterone were measured in serum up to eight times per cycle. We used weighted linear mixed models to evaluate associations between minerals and hormones and generalised linear models for risk of anovulation. Compared with Na intake ≥1500 mg, Na intake <1500 mg was associated with higher levels of FSH (21·3 %; 95 % CI 7·5, 36·9) and LH (36·8 %; 95 % CI 16·5, 60·5) and lower levels of progesterone (-36·9 %; 95 % CI -56·5, -8·5). Na intake <1500 mg (risk ratio (RR) 2·70; 95 % CI 1·00, 7·31) and Mn intake <1·8 mg (RR 2·00; 95 % CI 1·02, 3·94) were associated with an increased risk of anovulation, compared with higher intakes, respectively. Other measured dietary minerals were not associated with ovulatory function. As essential minerals are mostly obtained via diet, our results comparing insufficient levels with sufficient levels highlight the need for future research on dietary nutrients and their associations with ovulatory cycles.
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Yu X, Ibrahim M, Liu Z, Yang H, Tan L, Yang K. Biofunctional Mg coating on PEEK for improving bioactivity. Bioact Mater 2018; 3:139-143. [PMID: 29744451 PMCID: PMC5935772 DOI: 10.1016/j.bioactmat.2018.01.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 12/28/2017] [Accepted: 01/31/2018] [Indexed: 11/11/2022] Open
Abstract
High purity Mg was successfully coated on polyetheretherketone (PEEK) by vapor deposition method in order to improve the bioactivity including antibacterial property of PEEK implant. The morphology and elemental composition of the coating were characterized by scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS), showing that the coating was mainly composed of Mg at deposition temperature of 175 °C, 185 °C, 200 °C and 230 °C. The higher the substrate temperature was, the larger the Mg particle size was. The coating degraded and gradually peeled off from the surface of PEEK after up to 21 days' immersion. It was found that the degradation of Mg coating could strongly kill Staphylococcus aureus with antibacterial rate reaching to 99%. Mg can be expected to be coated on those bio-inert biomaterials to offer specific bioactivities. High purity Mg was coated on PEEK by vapor deposition method. The Mg coating degraded and gradually peeled off from the surface of PEEK after up to 21 days immersion. The degradation of Mg coating could strongly kill Staphylococcus aureus with antibacterial rate reaching to 99%.
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Affiliation(s)
- Xiaoming Yu
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Muhammad Ibrahim
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China.,School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China
| | - Zongyuan Liu
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Huazhe Yang
- China Medical University, Shenyang, 110122, China
| | - Lili Tan
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
| | - Ke Yang
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
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