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Fang CH, Wen C, Yang B, Song YH, Liu HQ, Tian L, Chen H, Bao N. Development and validation of a nomogram and risk stratification system to predict overall survival after surgical repair for pediatric patients with medulloblastoma based on easily accessible variables. Eur Rev Med Pharmacol Sci 2024; 28:969-980. [PMID: 38375704 DOI: 10.26355/eurrev_202402_35363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
OBJECTIVE This study aimed to develop and validate a nomogram and risk stratification system for the overall survival of pediatric patients with medulloblastoma after surgical repair. PATIENTS AND METHODS In this multicenter, retrospective study, consecutive patients who underwent surgery for medulloblastoma at Shanghai Children's Medical Center and the First Affiliated Hospital of Fujian Medical University from 2010 to 2022 formed the training and external validation datasets, respectively. Univariable and multivariable Cox regression analyses were performed to identify variables associated with mortality in the training dataset. A nomogram prediction model was developed based on independent variables in the multivariable Cox regression analysis to predict the 1-, 3-, and 5-year overall survival. The area under receiver operating characteristic curve (AUC) and calibration curve were used to evaluate the discrimination and calibration of the nomogram. A risk stratification system based on the median risk score was also established to divide patients into two risk groups. RESULTS In the training dataset, Cox regression analyses identified tumor size, brainstem involvement and chemotherapy as independent predictors for overall survival. The AUC of the nomogram was 0.75 at 1 year, 0. 75 at 3 years, 0.77 at 5 years in the training dataset, 0.74 at 1 year, 0.70 at 3 years, and 0.70 at 5 years in the validation dataset. The calibration curve for the probability of 1-, 3-, and 5-year survival showed good agreement between the nomogram prediction and actual observation in the training and validation datasets. The risk stratification system could perfectly classify patients into two risk groups, and the overall survival in the two groups had a good division. CONCLUSIONS This low-cost, convenient, and noninvasive nomogram can be translated into clinical practice as a tool for risk stratification and individualized prognosis prediction for children with medulloblastoma.
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Affiliation(s)
- C-H Fang
- Department of Neurosurgery, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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Nassarawa SS, Bao N, Zhang X, Ru Q, Luo Z. Evaluation of light irradiation on anthocyanins and energy metabolism of grape (Vitis vinifera L.) during storage. Food Chem 2024; 431:137141. [PMID: 37604007 DOI: 10.1016/j.foodchem.2023.137141] [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: 06/14/2023] [Revised: 08/08/2023] [Accepted: 08/10/2023] [Indexed: 08/23/2023]
Abstract
Grape is the world's economic horticultural crop; it is perishable due to various pathogens and abiotic stress attributed to water loss-induced issues. To address these postharvest problems, this research investigates the effects of light irradiation on anthocyanins synthesis and energy metabolism in stored grapes to enhance their postharvest quality. The activities of chlorophyllase (1.17 U gk-1), Mg-dechelatase (351.69 U gk-1), chlorophyll-degraded peroxidase (3.49 U gk-1), and pheophytinase (0.85 U gk-1) were significantly higher in the control fruit than in the treated fruit at the end of storage. The red-light treatment showed higher levels of anthocyanins biosynthesis-related enzymes than green, blue-light, and control treatments. Additionally, light irradiation resulted in a decrease in adenosine triphosphate, adenosine diphosphate, adenosine monophosphate, and energy charge. This was attributed to decreased activity of energy metabolism enzymes, reduced nicotinamide adenine dinucleotide phosphate content, and increased nicotinamide adenine dinucleotide content. These findings offer a theoretical foundation for optimizing grape coloration and energy metabolism during storage, thus prolonging the shelf-life of grapes by improving quality attributes. This research highlights the potential of light irradiation as a technique for enhancing the postharvest quality of agricultural products.
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Affiliation(s)
| | - Nina Bao
- Suzhou University, School of Biological and Food Engineering, Suzhou 234000, China
| | - Xingtao Zhang
- Suzhou University, School of Biological and Food Engineering, Suzhou 234000, China.
| | - Qiaomei Ru
- Hangzhou Wanxiang Polytechnic, Huawu Road, Hangzhou 310023, China
| | - Zisheng Luo
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China.
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Xu J, Sun W, Wang Y, Jiang H, Ding H, Cheng Q, Bao N, Meng J. Two-Stage Treatment Protocol of Fungal Periprosthetic Hip and Knee Joint Infections: the Clinical Experience from a Single Center Experience. Acta Chir Orthop Traumatol Cech 2024; 91:52-56. [PMID: 38447565 DOI: 10.55095/achot2024/003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
PURPOSE OF THE STUDY To evaluate the clinical results and safety of fungal periprosthetic joint Infections (fPJIs) using two-stage treatment protocol. MATERIAL AND METHODS 8 patients with fPJIs (3 hips and 5 knees) using two-stage revision were reviewed retrospectively and followed up at least 2 years. The preoperative demographic data, two-stage treatment protocol, results of microbiology and histologic workup and postoperative follow-up results (reimplantation success rate and infection free time) were recorded. RESULTS 7 patients got successful reimplantation, with a 75% reimplantation success rate. Two patients got knee arthrodesis eventually. All patients were infection free with a median follow-up of 4.0 ± 2.0 years (range, 2-7 years). Of them, Candida species were found in 7 patients, while non-Candida specimen was only isolated in 1 patient with Aspergillus. Only 2 patients had coexisting bacterial infection (Methicillin-resistant coagulase-negative Staphylococci and Proteus mirabilis respectively). The average interval between the initial surgery and diagnosis of fPJIs was 21.50±34.79 months (range, 4-104 months). The mean time of spacer implantation was 7.75±2.77 months (range, 6-14 months). None serious complication or above knee amputation was found. DISCUSSION fPJIs are very rare and considerable challenge after total hip or knee arthroplasty. The goal of therapy is to eradicate local infection and maintain function. Candida species were the most common pathogen. The duration between spacer placement and staged reimplantation was highly variable, and generally dependent upon the results of joint aspirates and infl ammatory markers. The current study shows that the two-stage treatment protocol is recommended for fungal periprosthetic hip and knee joint infections. CONCLUSIONS The two-stage treatment protocol is recommended for fungal periprosthetic hip and knee joint infections. The safety and effi cacy of biantibiotical impregnated (antifungal + antibiotics) cement spacer is confi rmed. Further evidence-based work is needed to determine the optimal drug dose and reimplantation time. KEY WORDS two-stage treatment protocol, fungal periprosthetic infections, hip spacer, knee spacer.
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Affiliation(s)
- J Xu
- Department of Orthopaedics, Changzhou Traditional Chinese medical hospital, affi liated to Nanjing University of Traditional Chinese Medicine, Changzhou, Jiangsu Province, China
| | - W Sun
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - Y Wang
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - H Jiang
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - H Ding
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - Q Cheng
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - N Bao
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
| | - J Meng
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu Province, China
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Bao N, Song J, Zhao X, Rashed MMA, Zhai K, Dong Z. Mechanochemical-Assisted Extraction and Biological Activity Research of Phenolic Compounds from Lotus Seedpod ( Receptaculum Nelumbinis). Molecules 2023; 28:7947. [PMID: 38138437 PMCID: PMC10745395 DOI: 10.3390/molecules28247947] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
To explore the feasibility of the mechanochemical-assisted extraction (MCAE) of phenolic compounds from lotus seedpod (Receptaculum Nelumbinis), a single-factor experiment combined with response-surface methodology (RSM) was used to optimize the extraction process. The results showed the optimal extraction conditions as follows: Li2CO3 as a solid reagent (25%), an extraction time of 80 min, liquid/solid ratio of 42.8 mL/g, and extraction temperature of 80.7 °C; and the maximum value of total phenolic content (TPC) was 106.15 ± 1.44 gallic acid equivalents (GAE)/g dry weight (DW). Additionally, the 2,2-Diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and ferric reducing antioxidant power (FRAP) were 279.75 ± 18.71, 618.60 ± 2.70, and 634.14 ± 7.17 µmol TE/g, respectively. Ultra-high pressure liquid chromatography combined with triple-time-of-flight mass spectrophotometry (UPLC-Triple-TOF/MS) analysis identified eight phenolic compounds mainly consisting of polyphenols and flavonoids. Moreover, the phenolic compounds showed potent inhibitory effects on both α-amylase and α-glucosidase, with inhibition rates of over 80%. Furthermore, the results showed different degrees of inhibition activity against Bacillus subtilis, Staphylococcus aureus, and Escherichia coli, among which the inhibitory effect on the growth of B. subtilis was the best. This paper shows that the phenolic compounds have good biological activities, which provides a reference for the further exploitation of LSP.
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Affiliation(s)
- Nina Bao
- School of Biological and Food Engineering, Suzhou University, Suzhou 234000, China; (N.B.); (J.S.); (X.Z.); (M.M.A.R.); (Z.D.)
- Engineering Research Center for Development and High Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
| | - Jiajia Song
- School of Biological and Food Engineering, Suzhou University, Suzhou 234000, China; (N.B.); (J.S.); (X.Z.); (M.M.A.R.); (Z.D.)
- College of Materials and Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Xinyuan Zhao
- School of Biological and Food Engineering, Suzhou University, Suzhou 234000, China; (N.B.); (J.S.); (X.Z.); (M.M.A.R.); (Z.D.)
| | - Marwan M. A. Rashed
- School of Biological and Food Engineering, Suzhou University, Suzhou 234000, China; (N.B.); (J.S.); (X.Z.); (M.M.A.R.); (Z.D.)
- Engineering Research Center for Development and High Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
| | - Kefeng Zhai
- School of Biological and Food Engineering, Suzhou University, Suzhou 234000, China; (N.B.); (J.S.); (X.Z.); (M.M.A.R.); (Z.D.)
- Engineering Research Center for Development and High Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
| | - Zeng Dong
- School of Biological and Food Engineering, Suzhou University, Suzhou 234000, China; (N.B.); (J.S.); (X.Z.); (M.M.A.R.); (Z.D.)
- Engineering Research Center for Development and High Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
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Dong Z, Yu S, Zhai K, Bao N, Rashed MMA, Wu X. Fabrication and Characterization of Complex Coacervation: The Integration of Sesame Protein Isolate-Polysaccharides. Foods 2023; 12:3696. [PMID: 37835349 PMCID: PMC10572293 DOI: 10.3390/foods12193696] [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: 09/09/2023] [Revised: 09/23/2023] [Accepted: 10/03/2023] [Indexed: 10/15/2023] Open
Abstract
The exceptional biocompatibility of emulsion systems that rely on stabilizing protein-polysaccharide particles presents extensive possibilities for the transportation of bioactive carriers, making them highly promising for various biological applications. The current work aimed to explore the phenomenon of complex coacervation between sesame protein isolate (SPI) and four distinct polysaccharides, namely, Arabic gum (GA), carrageenan (CAR), sodium carboxymethyl cellulose (CMC), and sodium alginate (SA). The study objective was achieved by fabricating emulsions through the blending of these polymers with oil at their maximum turbidity level (φ = 0.6), followed by the measurement of their rheological properties. The turbidity, ζ-potential, and particle size were among the techno-parameters analyzed to assess the emulsion stability. The microstructural characterization of the emulsions was conducted using both transmission electron microscopy (TEM) and scanning electron microscopy (SEM). Furthermore, the functional properties were examined using Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The SPI incorporated with SA, CMC, and CAR reached the maximum turbidity (0.2% w/v) at a ratio of 4:1, corresponding to the pH values of 4.5, 3, or 3.5, respectively. The SPI-GA mixture exhibited the maximum turbidity at a ratio of 10:1 and pH 4.5. Results from the FTIR and XRD analyses provided evidence of complex formation between SPI and the four polysaccharides, with the electrostatic and hydrogen bond interactions facilitating the binding of SPI to these polysaccharides. SPI was bound to the four polysaccharides through electrostatic and hydrogen bond interactions. The SPI-CMC and SPI-SA emulsions were more stable after two weeks of storage.
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Affiliation(s)
- Zeng Dong
- School of Biotechnology and Food Engineering, Suzhou University, Suzhou 234000, China; (Z.D.); (S.Y.); (N.B.); (M.M.A.R.); (X.W.)
- Engineering Research Center for Development and High-Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
- College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Shirong Yu
- School of Biotechnology and Food Engineering, Suzhou University, Suzhou 234000, China; (Z.D.); (S.Y.); (N.B.); (M.M.A.R.); (X.W.)
- Engineering Research Center for Development and High-Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
| | - Kefeng Zhai
- School of Biotechnology and Food Engineering, Suzhou University, Suzhou 234000, China; (Z.D.); (S.Y.); (N.B.); (M.M.A.R.); (X.W.)
- Engineering Research Center for Development and High-Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
| | - Nina Bao
- School of Biotechnology and Food Engineering, Suzhou University, Suzhou 234000, China; (Z.D.); (S.Y.); (N.B.); (M.M.A.R.); (X.W.)
- Engineering Research Center for Development and High-Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
| | - Marwan M. A. Rashed
- School of Biotechnology and Food Engineering, Suzhou University, Suzhou 234000, China; (Z.D.); (S.Y.); (N.B.); (M.M.A.R.); (X.W.)
- Engineering Research Center for Development and High-Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
| | - Xiao Wu
- School of Biotechnology and Food Engineering, Suzhou University, Suzhou 234000, China; (Z.D.); (S.Y.); (N.B.); (M.M.A.R.); (X.W.)
- Engineering Research Center for Development and High-Value Utilization of Genuine Medicinal Materials in North Anhui Province, Suzhou University, Suzhou 234000, China
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Ding X, Cui X, Tseng LT, Wang Y, Qu J, Yue Z, Sang L, Lee WT, Guan X, Bao N, Sathish CI, Yu X, Xi S, Breese MBH, Zheng R, Wang X, Wang L, Wu T, Ding J, Vinu A, Ringer SP, Yi J. Realization of High Magnetization in Artificially Designed Ni/NiO Layers through Exchange Coupling. Small 2023:e2304369. [PMID: 37715070 DOI: 10.1002/smll.202304369] [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] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/23/2023] [Indexed: 09/17/2023]
Abstract
High-magnetization materials play crucial roles in various applications. However, the past few decades have witnessed a stagnation in the discovery of new materials with high magnetization. In this work, Ni/NiO nanocomposites are fabricated by depositing Ni and NiO thin layers alternately, followed by annealing at specific temperatures. Both the as-deposited samples and those annealed at 373 K exhibit low magnetization. However, the samples annealed at 473 K exhibit a significantly enhanced saturation magnetization exceeding 607 emu cm-3 at room temperature, surpassing that of pure Ni (480 emu cm-3 ). Material characterizations indicate that the composite comprises NiO nanoclusters of size 1-2 nm embedded in the Ni matrix. This nanoclustered NiO is primarily responsible for the high magnetization, as confirmed by density functional theory calculations. The calculations also indicate that the NiO clusters are ferromagnetically coupled with Ni, resulting in enhanced magnetization. This work demonstrates a new route toward developing artificial high-magnetization materials using the high magnetic moments of nanoclustered antiferromagnetic materials.
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Affiliation(s)
- Xiang Ding
- School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, China
| | - Xiangyuan Cui
- School of Aerospace Mechanical & Mechatronic Engineering and Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Li-Ting Tseng
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Yiren Wang
- School of Materials Science and Engineering, Central South University, Changsha, 410083, P. R. China
| | - Jiangtao Qu
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Zengji Yue
- Institute of Photonic Chips, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Lina Sang
- School of Integrated Circuit Science and Engineering, Tianjin Key Laboratory of Film Electronic & Communication Devices, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Wai Tung Lee
- Science Directorate, European Spallation Source Partikelgatan 2, Lund, 224 84, Sweden
| | - Xinwei Guan
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Nina Bao
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 1192690
| | - C I Sathish
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Xiaojiang Yu
- Singapore Synchrotron Light Source, National University of Singapore, Singapore, 119260
| | - Shibo Xi
- Institute of Chemical and Engineering Science, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore, 627833
| | - Mark B H Breese
- Singapore Synchrotron Light Source, National University of Singapore, Singapore, 119260
| | - Rongkun Zheng
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW, 2500, Australia
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, Wollongong, NSW, 2500, Australia
| | - Lan Wang
- School of Physics, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Tom Wu
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Jun Ding
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 1192690
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Simon P Ringer
- School of Aerospace Mechanical & Mechatronic Engineering and Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Jiabao Yi
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
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Wang W, Li H, Lv J, Khan GJ, Duan H, Zhu J, Bao N, Zhai K, Xue Z. Determination of the Anti-Oxidative Stress Mechanism of Isodon suzhouensis Leaves by Employing Bioinformatic and Novel Research Technology. ACS Omega 2023; 8:3520-3529. [PMID: 36713735 PMCID: PMC9878666 DOI: 10.1021/acsomega.2c07913] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 12/22/2022] [Indexed: 06/18/2023]
Abstract
Isodon suzhouensis from Suzhou, China, is a traditional Chinese herb with wide applications in medicine and food. The antioxidant activity against oxidative stress of the leaves of Isodon suzhouensis is a myth since long and is not explored earlier thoroughly. The present study is focused to explore the active components in Isodon suzhouensis leaf extracts responsible for antioxidant effects against oxidative stress and the potential mechanism of this activity. We obtained the chromatograms of Isodon suzhouensis leaf extracts by the high-performance liquid phase (HPLC) for possible detection of antioxidant constituents. Some compounds in Isodon suzhouensis leaf extracts were then further assessed through the luminol luminescence mechanism combined with HPLC analysis as well as with SwissTargetPrediction database that helped to screen out the other constituents. The targets for effects against oxidative stress were then further screened through the GeneCards database, and the PPI network was constructed. The targets were analyzed by GO and KEGG using the David database. The obtained results were then further studied by employing in vitro experimentation and protein expression analyses by Western blotting. It is found that Isodon suzhouensis leaf extracts contain rutin, isoquercetin, glaucocalyxin A, glaucocalyxin B, and other compounds with antioxidant activity. The activity map of the free radical scavenging signals from Isodon suzhouensis showed a strong ability to scavenge free radicals with the highest capacity of glaucocalyxin B followed by isoquercetin succeeding the glaucocalyxin A supervening the rutin. Further network pharmacological analyses and in vitro experimentation showed that Isodon suzhouensis leaf extracts interfere with TNF and the p38 MAPK signaling pathway for antioxidant effects against oxidative stress. Conclusively, it is found that Isodon suzhouensis leaf extracts possess strong antioxidant potential via targeting TNF and p38 MAPK signaling pathways against oxidative stress, providing scientific foundation for further studies on Isodon suzhouensis for the further therapeutic approach.
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Affiliation(s)
- Wei Wang
- College
of Biological and Food Engineering, Anhui
Polytechnic University, Wuhu, Anhui 241000, China
- School
of Biological and Food Engineering, Engineering Research Center for
Development and High Value Utilization of Genuine Medicinal Materials
in North Anhui Province, Suzhou University, Suzhou, Anhui 234000, China
| | - Han Li
- College
of Biological and Food Engineering, Anhui
Polytechnic University, Wuhu, Anhui 241000, China
- School
of Biological and Food Engineering, Engineering Research Center for
Development and High Value Utilization of Genuine Medicinal Materials
in North Anhui Province, Suzhou University, Suzhou, Anhui 234000, China
| | - Jiamin Lv
- School
of Biological and Food Engineering, Engineering Research Center for
Development and High Value Utilization of Genuine Medicinal Materials
in North Anhui Province, Suzhou University, Suzhou, Anhui 234000, China
| | - Ghulam Jilany Khan
- Department
of Pharmacology and Therapeutics, Faculty of Pharmacy, University of Central Punjab, Lahore 54000, Pakistan
| | - Hong Duan
- College
of Biological and Food Engineering, Anhui
Polytechnic University, Wuhu, Anhui 241000, China
- School
of Biological and Food Engineering, Engineering Research Center for
Development and High Value Utilization of Genuine Medicinal Materials
in North Anhui Province, Suzhou University, Suzhou, Anhui 234000, China
| | - Juan Zhu
- School
of Biological and Food Engineering, Engineering Research Center for
Development and High Value Utilization of Genuine Medicinal Materials
in North Anhui Province, Suzhou University, Suzhou, Anhui 234000, China
- Faculty
of Pharmacy, Bengbu Medical College, Bengbu 233030, P.R. China
| | - Nina Bao
- School
of Biological and Food Engineering, Engineering Research Center for
Development and High Value Utilization of Genuine Medicinal Materials
in North Anhui Province, Suzhou University, Suzhou, Anhui 234000, China
| | - Kefeng Zhai
- College
of Biological and Food Engineering, Anhui
Polytechnic University, Wuhu, Anhui 241000, China
- School
of Biological and Food Engineering, Engineering Research Center for
Development and High Value Utilization of Genuine Medicinal Materials
in North Anhui Province, Suzhou University, Suzhou, Anhui 234000, China
- Faculty
of Pharmacy, Bengbu Medical College, Bengbu 233030, P.R. China
| | - Zhenglian Xue
- College
of Biological and Food Engineering, Anhui
Polytechnic University, Wuhu, Anhui 241000, China
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Li S, Bao N, Fan YL, Ye Q. [Chest high-resolution CT features analysis in predicting the progression of asbestosis]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2022; 40:1-6. [PMID: 35255553 DOI: 10.3760/cma.j.cn121094-20200630-00370] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To analyze the radiological characteristics of chest high-resolution computed tomography (HRCT) of patients with asbestosis, and to investigate the signs of predicting the disease progression of asbestosis. Methods: A prospective method was used to enroll 68 patients with asbestosis who were regularly followed up from 2013 to 2016. The radiological characteristics of patients with asbestosis were described by the International Classification of HRCT for Occupational and Environmental Respiratory Diseases (ICOERD) , and the differences between patients with and without progression were compared during the observation period. The Cox proportional hazards regression model was used to analyze the chest HRCT radiological signs predicting the progression of asbestosis. Results: The study included 68 patients with asbestosis aged (65.5±7.8) years old, of which 64.7% (44/68) were female, 29.4% (20/68) had a history of smoking. There was no significant difference in age, sex, smoking and asbestos exposure between patients with progressive asbestosis (20.6%, 14/68) and patients without progressive asbestosis (79.4%, 54/68) (P>0.05) . Chest HRCT of patients with asbestosis showed irregular and/or linear opacities, of which 5.9% (4/68) were accompanied by honeycombing. Irregular and/or linear opacities were mainly lower lung preponderant, often accompanied with ground glass opacity and mosaic perfusion. 98.5% (67/68) had pleural abnormalities, of which 39.7% (27/68) had diffuse pleural thickening with parenchymal bands and/or rounded atelectasis. The analysis of multivariable Cox proportional hazard regression showed that the risk of the progression of asbestosis was increased with higher irregular and/or linears opacities cores (HR=1.184, 95%CI: 1.012-1.384, P=0.034) and the appearance of honeycombing (HR=6.488, 95%CI: 1.447-29.097, P=0.015) . Conclusion: The irregular and/or linear opacities scores and honeycombing on chest HRCT are independent influencing factors for predicting the disease progression of asbestosis.
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Affiliation(s)
- S Li
- Beijing Chaoyang Hospital, Capital Medical University, Beijing Institute of Respiratory Medicine, Department of Occupational Medicine and Toxicology, Clinical Center for Interstitial Lung Diseases, Beijing 100020, China Department of Respiratory and Critical Care Medicine, Beijing Shunyi Hospital, Beijing 101300, China
| | - N Bao
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Y L Fan
- Beijing Chaoyang Hospital, Capital Medical University, Beijing Institute of Respiratory Medicine, Department of Occupational Medicine and Toxicology, Clinical Center for Interstitial Lung Diseases, Beijing 100020, China
| | - Q Ye
- Beijing Chaoyang Hospital, Capital Medical University, Beijing Institute of Respiratory Medicine, Department of Occupational Medicine and Toxicology, Clinical Center for Interstitial Lung Diseases, Beijing 100020, China
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9
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Duan H, Wang W, Li Y, Jilany Khan G, Chen Y, Shen T, Bao N, Hua J, Xue Z, Zhai K, Wei Z. Identification of phytochemicals and antioxidant activity of Premna microphylla Turcz. stem through UPLC-LTQ-Orbitrap-MS. Food Chem 2021; 373:131482. [PMID: 34731817 DOI: 10.1016/j.foodchem.2021.131482] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 07/20/2021] [Revised: 09/15/2021] [Accepted: 10/24/2021] [Indexed: 12/17/2022]
Abstract
Premna microphylla Turcz. is a commonly used traditional Chinese medicine totreatdysentery and appendicitis. Present study is focused to explore antioxidants and other compounds in the Premna microphylla Turcz. stem. Assessment of chemical composition was done with high sensitivity UPLC-LTQ-Orbitrap-MS and for Separation Thermo Hypersil Gold (100 mm × 2.1 mm, 1.9 µm) was used while electrospray ionization (ESI) was used for the mass spectrometry. 18 compounds were identified including Vitexin (1), Schaftoside (2), Vicenin-2 (3), Apigenin-6, 8-di-C-arabinoside (4), Apigenin-7-O-β-d-glucoside (5), Carnosic acid (6), Apigenin-8-C-β-d-xylopyranoside (7), Prostratin (8), Aurantio-obtusin-β-d-glucoside (9), Royleanone (10), 5-hydroxy-7,3',4'-Trimethoxy flavonols (11), 6-Hydroxy-5,6-dehydrosugiol (12), 14-deoxycoleon (13), Arucadiol (14), Obtusinone-B (15), Trehalose (16), Citric acid (17) and Betaine (18). Among these, 6 compounds including (6), (8), (9), (16), (17) and (18) were identified first time within this genus and plant. Study highlights the importance of Premna microphylla Turcz. stem extract for strong therapeutic potential against oxidation-related diseases.
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Affiliation(s)
- Hong Duan
- Suzhou Engineering and Technological Research Center of Natural Medicine and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000, PR China
| | - Wei Wang
- Suzhou Engineering and Technological Research Center of Natural Medicine and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000, PR China; School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu 241000, PR China
| | - Yongxiang Li
- Suzhou Engineering and Technological Research Center of Natural Medicine and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000, PR China
| | - Ghulam Jilany Khan
- Department of Pharmacology, Faculty of Pharmacy (FOP), University of Central Punjab, Lahore, Pakistan; National Drug Screening Center of Pharmacokinetics and Pharmacodynamics, School of Pharmacy, China Pharmaceutical University, Nanjing, PR China
| | - Yuan Chen
- Suzhou Engineering and Technological Research Center of Natural Medicine and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000, PR China; School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu 241000, PR China
| | - Tianci Shen
- Suzhou Engineering and Technological Research Center of Natural Medicine and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000, PR China
| | - Nina Bao
- Suzhou Engineering and Technological Research Center of Natural Medicine and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000, PR China
| | - Jing Hua
- Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University), Guilin 541004, PR China
| | - Zhenglian Xue
- School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu 241000, PR China
| | - Kefeng Zhai
- Suzhou Engineering and Technological Research Center of Natural Medicine and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000, PR China; School of Biological and Food Engineering, Anhui Polytechnic University, Wuhu 241000, PR China; Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources (Guangxi Normal University), Guilin 541004, PR China.
| | - Zhaojun Wei
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, PR China.
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10
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Bao N, Rashed MMA, Jiang B, Zhai K, Luo Z. Green and Efficient Extraction Approach for Polyphenol Recovery from Lotus Seedpods (Receptaculum Nelumbinis): Gas-Assisted Combined with Glycerol. ACS Omega 2021; 6:26722-26731. [PMID: 34661026 PMCID: PMC8515820 DOI: 10.1021/acsomega.1c04190] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/17/2021] [Indexed: 05/24/2023]
Abstract
In this paper, the gas-assisted combined with glycerol extraction (GAGE) for polyphenol recovery from lotus seedpods (LSPs) was modeled and optimized. Box-Behnken design was applied to optimize the total polyphenol content (TPC) of LSP along with enhancing antioxidant activities using response surface methodology based on the TPC extraction yield (%), which was affected by glycerol concentration, time, temperature, and glycerol-to-solid ratio. The optimal conditions for the LSP extract were glycerol-to-solid ratio, 42 mL/g; time, 50 min; concentration of glycerol, 45%; and temperature, 70 °C. Ultra-high-pressure liquid chromatography integrated with triple-time-of-flight mass spectrophotometry (UPLC-Triple-TOF/MS) analysis revealed nine biologically active polyphenols. Furthermore, Fourier-transform infrared spectroscopy and scanning electron microscopy results demonstrated the effect and influence during extraction. The findings suggested that GAGE is a potential, green, and high-efficiency alternative that could be used to recover polyphenols from plant source byproducts.
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Affiliation(s)
- Nina Bao
- Suzhou
Engineering and Technological Research Center of Natural Medicine
and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000 Anhui, China
- College
of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products
Postharvest Handling of Ministry of Agriculture and Rural Affairs,
Zhejiang Key Laboratory for Agro-Food Processing, National-Local Joint
Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang University, Hangzhou 310058 Zhejiang, China
| | - Marwan M. A. Rashed
- Suzhou
Engineering and Technological Research Center of Natural Medicine
and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000 Anhui, China
| | - Bianling Jiang
- Suzhou
Engineering and Technological Research Center of Natural Medicine
and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000 Anhui, China
| | - Kefeng Zhai
- Suzhou
Engineering and Technological Research Center of Natural Medicine
and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000 Anhui, China
| | - Zisheng Luo
- College
of Biosystems Engineering and Food Science, Key Laboratory of Agro-Products
Postharvest Handling of Ministry of Agriculture and Rural Affairs,
Zhejiang Key Laboratory for Agro-Food Processing, National-Local Joint
Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang University, Hangzhou 310058 Zhejiang, China
- Ningbo
Research Institute, Zhejiang University, Ningbo 315000 Zhejiang, China
- Fuli
Institute of Food Science, Hangzhou 310058 Zhejiang, China
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11
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Wang B, Mi MM, Zhang QY, Bao N, Pan L, Zhao Y, Qin GX. Relationship between the amino acid release kinetics of feed proteins and nitrogen balance in finishing pigs. Animal 2021; 15:100359. [PMID: 34536654 DOI: 10.1016/j.animal.2021.100359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 02/05/2021] [Revised: 08/16/2021] [Accepted: 08/18/2021] [Indexed: 01/20/2023] Open
Abstract
In current nutrition requirements of swine, although the protein diets are formulated based on the ileal digestibility of protein and amino acid (AA), there is a difference in nitrogen utilisation among various protein diets, which might be related to the AA release kinetics. To evaluate the relationship between AA release kinetics of feed proteins and nitrogen balance in finishing pigs, pigs were fed diets based on casein (CAS) or corn gluten meal (CGM) at normal or low-protein concentrations, and the AA release patterns were assessed. A 2 × 2 full factorial experimental design was used. 24 pigs (Duroc × Landrace × Yorkshire) with an initial weight of 67.0 ± 1.8 kg were randomly assigned to consume a normal-protein casein-based diet (N.CAS, 10% CP), normal-protein corn gluten meal-based diet (N.CGM, 10% CP), low-protein casein-based diet (L.CAS, 8.5% CP), or low-protein corn gluten meal-based diet (L.CGM, 8.5% CP) for 14 days (n = 6 per group; pigs housed and fed separately). The low-protein diets were associated with a more rapid release of AAs in the early stages of gastric digestion than the normal-protein diets. The N.CAS and L.CAS diets were associated with a peak AA release at approximately 4 h during trypsin digestion, whereas N.CGM and L.CGM were at approximately 16 h. The N.CAS diet was associated with the least dispersed release curves and lowest synchronisation indexes, implying that it was associated with the best AA release synchronism, whereas the L.CGM diet was on the contrary. The nitrogen intake (NI), faecal nitrogen, urine nitrogen (UN), total nitrogen, net protein utilisation and apparent biological value (ABV) of protein of pigs fed the L.CAS or L.CGM diets were lower than those fed the N.CAS or N.CGM diets (P < 0.05). Notably, there was a difference in NI (P < 0.05) and trends with respect to UN and ABV (0.05 < P < 0.1), but no differences in retained nitrogen or apparent nitrogen digestibility between pigs fed the N.CAS or L.CAS diets and those fed the N.CGM or L.CGM diets. Pigs fed the N.CAS or N.CGM diets had higher serum concentrations of UN than pigs fed the L.CAS or L.CGM diets (P < 0.05), but there were no differences in serum total protein, albumin, triglyceride, glucose, alanine transaminase, or aspartate aminotransferase between the groups. In addition, there was an interaction between protein level and protein source on serum globulin (P < 0.05). Therefore, the diet with a better AA release synchronism can improve protein utilisation efficiency in finishing pigs and to reduce environmental pollution.
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Affiliation(s)
- B Wang
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China
| | - M M Mi
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China
| | - Q Y Zhang
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China
| | - N Bao
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China
| | - L Pan
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China
| | - Y Zhao
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China.
| | - G X Qin
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, PR China
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12
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Bao N, Wang D, Fu X, Xie H, Gao G, Luo Z. Green Extraction of Phenolic Compounds from Lotus Seedpod ( Receptaculum Nelumbinis) Assisted by Ultrasound Coupled with Glycerol. Foods 2021; 10:239. [PMID: 33503852 PMCID: PMC7912186 DOI: 10.3390/foods10020239] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/15/2021] [Accepted: 01/20/2021] [Indexed: 12/21/2022] Open
Abstract
Lotus Receptaculum Nelumbinis has been sparking wide research interests due to its rich phenolic compounds. In the present work, ultrasonic-assisted extraction coupled with glycerol was employed to extract phenolic compounds from Receptaculum Nelumbinis and the process was optimized using a response surface methodology with Box-Behnken design (BBD). The optimal conditions for the total phenolic content (TPC) extract were obtained: glycerol concentration of 40%, an extraction temperature of 66 °C, ultrasonic time of 44 min, and the solvent-to-solid ratio of 55 mL/g. Under these optimum extraction conditions, the extraction yield of TPC was 92.84 ± 2.13 mg gallic acid equivalents (GAE) /g. Besides, the antioxidant activities demonstrated the ability of free radical scavenging by four different methods that included 2,2-Diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP), 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), and reducing activity (RA) were 459.73 ± 7.07, 529.97 ± 7.30, 907.61 ± 20.28, and 983.66 ± 11.80 μmol TE/g, respectively. Six phenolic compounds were identified by ultra-high pressure liquid chromatography combined with triple-time-of-flight mass spectrophotometry (UPLC-Triple-TOF/MS) from the extracts. Meanwhile, Fourier transform infrared (FTIR) was conducted to identify the characteristic functional groups of the extracts and thus reflected the presence of polyphenols and flavonoids. Scanning electron microscopy (SEM) illustrated the microstructure difference of four treatments, which might explain the relationships between antioxidant activities and the structures of phenolic compounds.
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Affiliation(s)
- Nina Bao
- Suzhou Engineering and Technological Research Center of Natural Medicine and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000, Anhui, China;
- Zhejiang Key Laboratory for Agro-Food Processing, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, Zhejiang, China; (D.W.); (X.F.)
| | - Di Wang
- Zhejiang Key Laboratory for Agro-Food Processing, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, Zhejiang, China; (D.W.); (X.F.)
| | - Xizhe Fu
- Zhejiang Key Laboratory for Agro-Food Processing, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, Zhejiang, China; (D.W.); (X.F.)
| | - Hujun Xie
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310058, Zhejiang, China;
| | - Guizhen Gao
- Suzhou Engineering and Technological Research Center of Natural Medicine and Functional Food, School of Biological and Food Engineering, Suzhou University, Suzhou 234000, Anhui, China;
| | - Zisheng Luo
- Zhejiang Key Laboratory for Agro-Food Processing, National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, Zhejiang, China; (D.W.); (X.F.)
- Ningbo Research Institute, Zhejiang University, Ningbo 315000, Zhejiang, China
- Fuli Institute of Food Science, Hangzhou 310058, Zhejiang, China
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13
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Ahmed S, Carl Cui XY, Ding X, Murmu PP, Bao N, Geng X, Xi S, Liu R, Kennedy J, Wu T, Wang L, Suzuki K, Ding J, Chu X, Clastinrusselraj Indirathankam SR, Peng M, Vinu A, Ringer SP, Yi J. Colossal Magnetization and Giant Coercivity in Ion-Implanted (Nb and Co) MoS 2 Crystals. ACS Appl Mater Interfaces 2020; 12:58140-58148. [PMID: 33375795 DOI: 10.1021/acsami.0c18150] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Colossal saturation magnetization and giant coercivity are realized in MoS2 single crystals doped with Nb and/or Co using an ion implantation method. Magnetic measurements have demonstrated that codoping with 2 at % Nb and 4 at % Co invoked a "giant" coercivity, as high as 9 kOe at 100 K. Doping solely with 5 at % Nb induces a "colossal" magnetization of 1800 emu/cm3 at 5 K, which is higher than that of metallic Co. The high magnetization is due to the formation of Nb-rich defect complexes, as confirmed by first-principles calculations. It is proposed that the high coercivity is due to the combined effects of strong directional exchange coupling induced by the Nb and Co doping and pinning effects from defects within the layered structure. This high magnetization mechanism is also applicable to 2D materials with bilayers or few layers of thickness, as indicated by first-principles calculations. Hence, this work opens a potential pathway for the development of 2D high-performance magnetic materials.
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Affiliation(s)
- Sohail Ahmed
- School of Materials Science and Engineering, UNSW, Sydney, New South Wales 2052, Australia
| | - Xiang-Yuan Carl Cui
- Australian Centre for Microscopy & Microanalysis, and School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Xiang Ding
- School of Materials Science and Engineering, UNSW, Sydney, New South Wales 2052, Australia
- School of Energy and Power Engineering, Wuhan University of Technology, Wuhan, Hubei 430063, China
| | - Peter Paul Murmu
- National Isotope Centre, GNS Science, P.O. Box 31312, Lower Hutt 5010, New Zealand
| | - Nina Bao
- Department of Materials Science and Engineering, National University of Singapore, 119260, Singapore
| | - Xun Geng
- School of Materials Science and Engineering, UNSW, Sydney, New South Wales 2052, Australia
| | - Shibo Xi
- Institute of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, Jurong Island, 627833, Singapore
| | - Rong Liu
- SIMS Facility, Office of the Deputy-Vice Chancellor (Research and Development), Western Sydney University, Locked Bag 1797, Penrith, New South Wales 2751, Australia
| | - John Kennedy
- National Isotope Centre, GNS Science, P.O. Box 31312, Lower Hutt 5010, New Zealand
| | - Tom Wu
- School of Materials Science and Engineering, UNSW, Sydney, New South Wales 2052, Australia
| | - Lan Wang
- School of Science, RMIT University, Melbourne, Victoria 3001, Australia
| | - Kiyonori Suzuki
- Department of Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Jun Ding
- Department of Materials Science and Engineering, National University of Singapore, 119260, Singapore
| | - Xueze Chu
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | | | - Mingli Peng
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710069, China
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Simon Peter Ringer
- Australian Centre for Microscopy & Microanalysis, and School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, New South Wales 2308, Australia
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14
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Geng T, Su S, Sun K, Zhao L, Zhao Y, Bao N, Pan L, Sun H. Effects of feeding a Lactobacillus plantarum JL01 diet on caecal bacteria and metabolites of weaned piglets. Lett Appl Microbiol 2020; 72:24-35. [PMID: 32989746 DOI: 10.1111/lam.13399] [Citation(s) in RCA: 5] [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: 06/22/2020] [Revised: 09/20/2020] [Accepted: 09/22/2020] [Indexed: 12/27/2022]
Abstract
Currently, knowledge is limited concerning the impact of a Lactobacillus plantarum JL01 diet for weaned piglets on caecal bacteria and metabolite profiles. In our experiments, 24 weaned piglets were randomly divided into two groups; each piglet in the treatment groups (Cec-Lac) was fed a basic diet and administered 10 ml of L. plantarum JL01 (1·0 × 109 CFU per ml) every day. The control group (Cec-Con) was fed a basic diet. After feeding for 28 days, we analysed the parameters of the caecal digesta of weaned piglets. We used 16S rDNA gene sequencing and mass spectrometry (MS)-based metabolomics techniques to investigate the effect of a L. plantarum JL01 diet on intestinal microbial composition and its metabolite profiles in the caecum contents of weaned piglets. The results showed that the richness estimators (ACE and Chao indices) in the caecal bacteria increased in the Cec-Lac group. Prevotella_2 and Desulfovibrio decreased significantly, while Pantoea and Rectale_group increased in the caecum of weaned piglets in the Cec-Lac group. Furthermore, Pearson's correlation analysis revealed that the genus Rectale_group was positively correlated with indole-3-acetic acid (P < 0·05), and the genus Pantoea had the same correlation with 1-palmitoyl lysophosphatidic acid. The metabolomics analysis revealed that the L. plantarum JL01 diet supplementation had significant effects on tryptophan metabolism and fat digestion and absorption. The results indicated that the L. plantarum JL01 dietary supplementation not only altered the microbial composition but also mediated tryptophan metabolism and fat digestion and absorption in the caecum, factors that may further affect the health of the host.
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Affiliation(s)
- T Geng
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China.,Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - S Su
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China.,Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - K Sun
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China.,Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - L Zhao
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China.,Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Y Zhao
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China.,Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - N Bao
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China.,Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - L Pan
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China.,Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - H Sun
- Key Laboratory of Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, China.,Jilin Provincial Key Laboratory of Animal Nutrition and Feed Science, Jilin Agricultural University, Changchun, China.,College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
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15
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Yang Y, Liu L, Zhu H, Bao N, Ding J, Chen J, Yu K. Critical Control of Highly Stable Nonstoichiometric Mn-Zn Ferrites with Outstanding Magnetic and Electromagnetic Performance for Gigahertz High-Frequency Applications. ACS Appl Mater Interfaces 2020; 12:16609-16619. [PMID: 32186841 DOI: 10.1021/acsami.0c00920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Pristine nonstoichiometric Mn-Zn ferrites were synthesized using a facile "heating-up" method. A route for achieving very stable single-crystal spinel Mn-Zn ferrites with enhanced magnetic performance and Curie temperature was explored using annealing procedures, where the protective gas flow velocities, heating rates, and annealing temperatures were critical in determining the phase structures and performance. The annealed Mn-Zn ferrites showed ultrahigh saturation magnetizations of ∼120 emu/g and an ultrahigh Curie temperature of ∼750 K. Mössbauer spectra indicated that the valence state of Mn was maintained at Mn2+, and both Mn and Zn were located at A sites in the inverse spinel structure for the highly stable Mn-Zn ferrites. An excellent microwave-absorbing capability in a broad frequency range of 0.1-18 GHz was realized owing to the large magnetic and dielectric losses. The optimal match thickness of Mn-Zn ferrites was found to be 1.5 mm, corresponding to a maximum reflection loss of 22 dB at 16 GHz. These results indicate that the synthesized Mn-Zn ferrites exhibit significant advantages in microwave absorption in the high-frequency range. The demonstrated multicomponent ferrites with high magnetic performance and Curie temperature may find broad applications in various complicated environments, such as those having elevated temperatures.
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Affiliation(s)
- Yang Yang
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518052, China
| | - Lidong Liu
- Heng Dian Group DMEGC Magnetics Company, Limited, Hengdian Industrial Area, Dongyang City, 322118 Zhejiang Province, China
| | - Hangfei Zhu
- Heng Dian Group DMEGC Magnetics Company, Limited, Hengdian Industrial Area, Dongyang City, 322118 Zhejiang Province, China
| | - Nina Bao
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore
| | - Jun Ding
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117575, Singapore
| | - Jing Chen
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518052, China
| | - Kuai Yu
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518052, China
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16
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Ahmed S, Ding X, Murmu PP, Bao N, Liu R, Kennedy J, Wang L, Ding J, Wu T, Vinu A, Yi J. High Coercivity and Magnetization in WSe 2 by Codoping Co and Nb. Small 2020; 16:e1903173. [PMID: 31441228 DOI: 10.1002/smll.201903173] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Introducing ferromagnetism in transition metal dichalcogenides has attracted lots of attention due to the possible applications in spintronics devices. Generally, single magnetic element doping is used to introduce magnetism. However, mostly, weak ferromagnetism is observed. In this work, codoping of two kinds of transition metals (Nb and Co) into WSe2 is used to study its magnetic properties. In detail, single crystal WSe2 is codoped with 4 at% Co and various concentrations of Nb by employing the physical ion implantation method. Raman, X-ray diffraction and X-ray photoelectron spectroscopy results reveal the effective substitutional doping of implanted elements (Co and Nb). Magnetic measurements illustrate that both un-doped and 4 at% Co doped WSe2 show weak ferromagnetism whereas magnetization is strongly enhanced when Co and Nb are codoped into WSe2 . The magnetization is comparable with a ferromagnet, which may be attributed to Co, Nb doping and defects. In addition, a large coercivity of ≈1.2 kOe is observed in the 1 at% Nb-4 at% Co codoped WSe2 sample, which may be ascribed to the combined effect of doping-induced stress, defect-dictated pinning and anisotropy of NbSe bond owing to the charge transfer between Nb and Se ions.
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Affiliation(s)
- Sohail Ahmed
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Xiang Ding
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Peter P Murmu
- National Isotope Centre, GNS Science, P.O. Box 31312, Lower Hutt, 5010, New Zealand
| | - Nina Bao
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 119260, Singapore
| | - Rong Liu
- SIMS Facility, Office of the Deputy-Vice-Chancellor (R&D), Western Sydney University, Penrith, NSW, 2751, Australia
| | - John Kennedy
- National Isotope Centre, GNS Science, P.O. Box 31312, Lower Hutt, 5010, New Zealand
| | - Lan Wang
- School of Science, RMIT University, Melbourne, Victoria, 3001, Australia
| | - Jun Ding
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 119260, Singapore
| | - Tom Wu
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
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17
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Ding X, Cui X, Xiao C, Luo X, Bao N, Rusydi A, Yu X, Lu Z, Du Y, Guan X, Tseng LT, Lee WT, Ahmed S, Zheng R, Liu T, Wu T, Ding J, Suzuki K, Lauter V, Vinu A, Ringer SP, Yi JB. Confinement-Induced Giant Spin-Orbit-Coupled Magnetic Moment of Co Nanoclusters in TiO 2 Films. ACS Appl Mater Interfaces 2019; 11:43781-43788. [PMID: 31660716 DOI: 10.1021/acsami.9b15823] [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] [Indexed: 06/10/2023]
Abstract
High magnetization materials are in great demand for the fabrication of advanced multifunctional magnetic devices. Notwithstanding this demand, the development of new materials with these attributes has been relatively slow. In this work, we propose a new strategy to achieve high magnetic moments above room temperature. Our material engineering approach invoked the embedding of magnetic nanoclusters in an oxide matrix. By precisely controlling pulsed laser deposition parameters, Co nanoclusters are formed in a 5 at % Co-TiO2 film. The presence of these nanoclusters was confirmed using transmission electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray absorption fine structure. The film exhibits a very high saturation magnetization of 99 emu/cm3. Detailed studies using X-ray magnetic circular dichroism confirm that Co has an enhanced magnetic moment of 3.5 μB/atom, while the Ti and O also contribute to the magnetic moments. First-principles calculations supported our hypothesis that the metallic Co nanoclusters surrounded by a TiO2 matrix can exhibit both large spin and orbital moments. Moreover, a quantum confinement effect results in a high Curie temperature for the embedded Co nanoclusters. These findings reveal that 1-2 nm nanoclusters that are quantum confined can exhibit very large magnetic moments above room temperature, representing a promising advance for the design of new high magnetization materials.
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Affiliation(s)
- Xiang Ding
- School of Materials Science and Engineering , UNSW Sydney , Kensington , NSW 2052 , Australia
| | | | - Chi Xiao
- Department of Physics and Singapore Synchrotron Light Source , National University of Singapore , 119077 Singapore
| | - Xi Luo
- School of Materials Science and Engineering , UNSW Sydney , Kensington , NSW 2052 , Australia
| | | | - Andrivo Rusydi
- Department of Physics and Singapore Synchrotron Light Source , National University of Singapore , 119077 Singapore
| | | | | | - Yonghua Du
- Institute of Chemical and Engineering Science , Agency for Science, Technology and Research (A*STAR) , 1 Pesek Road , Jurong Island, 627833 Singapore
| | - Xinwei Guan
- School of Materials Science and Engineering , UNSW Sydney , Kensington , NSW 2052 , Australia
- Physical Sciences and Engineering Division , King Abdullah University of Science and Technology , Thuwal 23955-6900 , Saudi Arabia
| | - Li-Ting Tseng
- School of Materials Science and Engineering , UNSW Sydney , Kensington , NSW 2052 , Australia
| | - Wai Tung Lee
- Bragg Institute , ANSTO , New Illawarra Road , Lucas Heights, Sydney , NSW 2234 , Australia
| | - Sohail Ahmed
- School of Materials Science and Engineering , UNSW Sydney , Kensington , NSW 2052 , Australia
| | | | - Tao Liu
- Karls Tech GmbH , Fischreiher Strasse 3 , Karlsruhe 76187 , Germany
| | - Tom Wu
- School of Materials Science and Engineering , UNSW Sydney , Kensington , NSW 2052 , Australia
| | | | - Kiyonori Suzuki
- Department of Materials Science and Engineering , Monash University , Melbourne , Victoria 3800 , Australia
| | - Valeria Lauter
- Neutron Scattering Division, Neutron Sciences Directorate , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials, School of Engineering , University of Newcastle , Callaghan , NSW 2308 , Australia
| | | | - Jia Bao Yi
- Global Innovative Center for Advanced Nanomaterials, School of Engineering , University of Newcastle , Callaghan , NSW 2308 , Australia
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18
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Song DY, Zhang S, Zhang LP, Jin ML, Li X, Bao N, Ren YH, Liu M, Dai HP. [Differences in small airway lesions in patients with different types of idiopathic interstitial pneumonia]. Zhonghua Yi Xue Za Zhi 2019; 99:2325-2331. [PMID: 31434411 DOI: 10.3760/cma.j.issn.0376-2491.2019.30.002] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the differences in small airway lesions in patients with different types of idiopathic interstitial pneumonia (IIPs). Methods: A total of 46 patients with IIPs confirmed by video assisted thoracoscopic or open lung biopsy, hospitalized in the Respiratory and Critical Care Medicine of Beijing Chao-Yang Hospital, from Dec. 1998 through Nov. 2007 were studied, including 19 patients with idiopathic pulmonary fibrosis (IPF group), 14 with nonspecific interstitial pneumonia (NSIP group), and 13 cryptogenic organizing pneumonia (COP group). Pulmonary function and high resolution CT (HRCT) of the patients were examined before lung biopsy, and lung biopsy tissue were stained with hematoxylin-eosin. The abnormality of small airways in pathology, pulmonary function and HRCT were compared among these patients with IIPs. Results: Small airway inflammatory cell infiltration score (53.8±17.7) was significantly higher in the COP group than in the IPF group (38.8±9.7) (P<0.01). The fibrous tissue proliferation score in small airways (42.9±12.1) in the IPF group was significantly higher than that in the NSIP group (31.4±10.5) and the COP group (26.7±16.3) (both P<0.05). In the IPF group, NSIP group and COP group, the small airway function index was significantly reduced, and the maximum expiratory flow rate (V(25%), V(50%)) at 25% and 50% of the lung capacity was<80% predicted, the incidences of small airway dysfunction in the three groups were 63.2%, 69.2%, and 63.6%, respectively. There was no significant difference among the groups (P>0.05). Small airway inflammatory cell infiltration was negatively correlated with V(50%) of small airway function (r=-0.305, P=0.049). The bronchodilation rate in the HRCT of the IPF group (100%) was significantly higher than that of the NSIP group (50.0%) and the COP group (53.8%) (both P<0.01). Conclusion: The patients with IPF, NSIP and COP have abnormal pathologic, physiological and imaging changes of small airways, moreover have different characteristics.
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Affiliation(s)
- D Y Song
- Department of Pulmonary and Critical Care Medicine in Respiratory Center, China-Japan Friendship Hospital, National Clinical Research Center for Respiratory Disease, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - S Zhang
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - L P Zhang
- Department of Respiratory Medicine, Beijing Haidian Hospital, Beijing 100194, China
| | - M L Jin
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - X Li
- Department of Pathology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - N Bao
- Department of Radiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Y H Ren
- Department of Pulmonary and Critical Care Medicine in Respiratory Center, China-Japan Friendship Hospital, National Clinical Research Center for Respiratory Disease, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - M Liu
- Department of Radiology in Respiratory Center, China-Japan Friendship Hospital, National Clinical Research Center for Respiratory Disease, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
| | - H P Dai
- Department of Pulmonary and Critical Care Medicine in Respiratory Center, China-Japan Friendship Hospital, National Clinical Research Center for Respiratory Disease, Institute of Respiratory Medicine, Chinese Academy of Medical Sciences, Beijing 100029, China
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19
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Bao N, Yin Y, Wang P. An Antimicrobial Cerebroside from the Liposoluble Constituent of Cervus Nippon Antler Velvet Layer. PAK J ZOOL 2018. [DOI: 10.17582/journal.pjz/2018.50.5.1747.1751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Luo X, Tseng LT, Wang Y, Bao N, Lu Z, Ding X, Zheng R, Du Y, Huang K, Shu L, Suter A, Lee WT, Liu R, Ding J, Suzuki K, Prokscha T, Morenzoni E, Yi JB. Intrinsic or Interface Clustering-Induced Ferromagnetism in Fe-Doped In 2O 3-Diluted Magnetic Semiconductors. ACS Appl Mater Interfaces 2018; 10:22372-22380. [PMID: 29893112 DOI: 10.1021/acsami.8b04046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Five percent Fe-doped In2O3 films were deposited using a pulsed laser deposition system. X-ray diffraction and transmission electron microscopy analysis show that the films deposited under oxygen partial pressures of 10-3 and 10-5 Torr are uniform without clusters or secondary phases. However, the film deposited under 10-7 Torr has a Fe-rich phase at the interface. Magnetic measurements demonstrate that the magnetization of the films increases with decreasing oxygen partial pressure. Muon spin relaxation (μSR) analysis indicates that the volume fractions of the ferromagnetic phases in PO2 = 10-3, 10-5, and 10-7 Torr-deposited samples are 23, 49, and 68%, respectively, suggesting that clusters or secondary phases may not be the origin of the ferromagnetism and that the ferromagnetism is not carrier-mediated. We propose that the formation of magnetic bound polarons is the origin of the ferromagnetism. In addition, both μSR and polarized neutron scattering demonstrate that the Fe-rich phase at the interface has a lower magnetization compared to the uniformly distributed phases.
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Affiliation(s)
- Xi Luo
- School of Materials Science and Engineering , UNSW , Kensington , NSW 2052 , Australia
| | - Li-Ting Tseng
- School of Materials Science and Engineering , UNSW , Kensington , NSW 2052 , Australia
| | - Yiren Wang
- School of Materials Science and Engineering , UNSW , Kensington , NSW 2052 , Australia
| | - Nina Bao
- Department of Materials Science and Engineering , National University of Singapore , Singapore 119260
| | - Zunming Lu
- School of Physics , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Xiang Ding
- School of Materials Science and Engineering , UNSW , Kensington , NSW 2052 , Australia
| | - Rongkun Zheng
- School of Physics , The University of Sydney , Sydney , NSW 2006 , Australia
| | - Yonghua Du
- Institute of Chemical and Engineering Science , Agency for Science, Technology and Research (A*STAR) , 1 Pesek Road , Jurong Island, Singapore 627833
| | - Kevin Huang
- State Key Laboratory of Surface Physics, Department of Physics , Fudan University , Shanghai 200433 , China
| | - Lei Shu
- State Key Laboratory of Surface Physics, Department of Physics , Fudan University , Shanghai 200433 , China
| | - Andreas Suter
- Laboratory for Muon Spin Spectroscopy , Paul Scherrer Institute , Villigen 5232 , Switzerland
| | - Wai Tung Lee
- Bragg institute , ANSTO , New Illawarra Road, Lucas Heithers , NSW 2234 , Australia
| | - Rong Liu
- SIMS Facility, Office of the Deputy-Vice Chancellor (Research and Development) , Western Sydney University , Locked Bag 1797 , Penrith , NSW 2751 , Australia
| | - Jun Ding
- Department of Materials Science and Engineering , National University of Singapore , Singapore 119260
| | - Kiyonori Suzuki
- Department of Materials Science and Engineering , Monash University , Clayton , Victoria 3800 , Australia
| | - Thomas Prokscha
- Laboratory for Muon Spin Spectroscopy , Paul Scherrer Institute , Villigen 5232 , Switzerland
| | - Elvezio Morenzoni
- Laboratory for Muon Spin Spectroscopy , Paul Scherrer Institute , Villigen 5232 , Switzerland
| | - Jia Bao Yi
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering , The University of Newcastle , Callaghan , NSW 2308 , Australia
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21
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Mi LY, Ban CJ, Liu Y, Bao N, Sun B, Zhu M, Ren YH, Dai HP. [Clinical features of acute diffuse pulmonary exudative disorders]. Zhonghua Yi Xue Za Zhi 2018; 97:3445-3449. [PMID: 29275576 DOI: 10.3760/cma.j.issn.0376-2491.2017.44.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the clinical features of acute diffuse pulmonary exudative disorders. Methods: The data were collected from patients who were hospitalized in respiratory intensive care unit (RICU) of Beijing Chaoyang Hospital affiliated to the Capital Medical University during January 2009 to December 2011, and had acute clinical course with imaging findings of diffuse pulmonary infiltrated shadows (similar to acute respiratory distress syndrome (ARDS)). The causes of disease and clinical features were analyzed. Results: A total of 86 patients with acute diffuse pulmonary exudative disorders were included. Sixty-two (72.1%) were males, with a mean age of (58.6±16.4) years old; 24(27.9%) were females, with a mean age of (48.2±18.3) years old. The duration of the disease before administration was (11.5±5.2) days, and RICU stay was (15.5±9.5) days, with hospital mortality of 40.7% and the average hospitalization cost of 101 thousand RMB. The main cause was infection, which occurred in 53 cases (61.6%) (virus in 21 cases, bacteria in 14 cases, fungus in 11 cases, pneumocystis in 15 cases and others in 3 cases, mixed infection in 11 cases). Interstitial pneumonia occurred in 12 cases (idiopathic interstitial pneumonia in 9 cases: cryptogenic organizing pneumonia in 3 cases, the acute exacerbation of idiopathic pulmonary fibrosis in 3 cases, nonspecific interstitial pneumonia in 1 case, acute interstitial pneumonia in 2 cases, and connective tissue disease in 3 cases), aspiration pneumonia in 10 cases, acute left heart failure in 6 cases, and exogenous pulmonary ARDS in 5 cases. Conclusions: The main cause of acute diffuse pulmonary exudative disorders is pulmonary infection, followed by interstitial pneumonia. The hospital mortality and hospitalization cost are high.
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Affiliation(s)
- L Y Mi
- Department of Respiratory and Critical Care Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
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22
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Wang Q, Song YH, Tang Z, Wang ZP, Xu Q, Bao N. Effects of ganglioside GM1 and neural growth factor on neural stem cell proliferation and differentiation. Genet Mol Res 2016; 15:gmr8376. [PMID: 27525911 DOI: 10.4238/gmr.15038376] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Neurogenesis, recovery from nerve injury, neurodegeneration, and Parkinson's disease affect people's health, yet the underlying molecular mechanisms remain elusive. Here, we investigated the effect of ganglioside GM1 and neural growth factor (NGF) on neural stem cell (NSC) proliferation and differentiation in vitro to provide a scientific basis for comprehensive treatment of nervous system diseases via NSC application. As widely applied methods of relatively high accuracy, cell counts and 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assays were used to assess NSC proliferation. In addition, western blotting was employed to determine NSC differentiation. Cell counts and MTT assays demonstrated that in epidermal growth factor (EGF)- and basic fibroblast growth factor (bFGF)-containing medium, a high concentration of GM1, but not NGF, significantly elevated NSC proliferation. In NSC cultures lacking EGF and bFGF, cell counts and MTT values were significantly increased compared to those in the negative control group on days 4, 7, and 10 after GM1 (25, 100, and 200 ng/mL) but not NGF (25, 50, 100, and 200 ng/mL) treatment. Western blotting revealed significantly increased expression of nestin (an NSC marker) in NSCs treated with GM1, and upregulation of glial fibrillary acidic protein (a glial cell marker) and neuron-specific enolase (a neuron marker) in those administered NGF. Our results suggest that GM1 and NGF induce NSC proliferation and differentiation, respectively, in a dose-dependent manner.
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Affiliation(s)
- Q Wang
- Pediatric Department, Shanghai First People's Hospital, Shanghai, China
| | - Y H Song
- Neurosurgery Department, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Z Tang
- College of Mechanical Engineering, Donghua University, Shanghai, China
| | - Z P Wang
- Neurosurgery Department, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Q Xu
- Scientific Research Center, Shanghai Xinhua Hospital, Shanghai, China
| | - N Bao
- Neurosurgery Department, Shanghai Children's Medical Center Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
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23
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Jiang Z, Hennein L, Xu Y, Bao N, Coh P, Tao L. Elevated serum monocyte chemoattractant protein-1 levels and its genetic polymorphism is associated with diabetic retinopathy in Chinese patients with Type 2 diabetes. Diabet Med 2016; 33:84-90. [PMID: 25981750 DOI: 10.1111/dme.12804] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/13/2015] [Indexed: 11/30/2022]
Abstract
AIM Previous studies have reported that monocyte chemoattractant protein-1 (MCP-1) is involved in inflammatory and metabolic diseases. The purpose of this study is to investigate the role of MCP-1 in the pathogenesis of diabetic retinopathy (DR) in Han Chinese patients with Type 2 diabetes. METHODS Serum levels of MCP-1 protein in patients classified as diabetic without retinopathy (DWR) and DR, including NPDR and PDR, were assayed by enzyme-linked immunosorbent assay. Genomic DNA from 198 DWR patients, 176 NPDR patients and 143 PDR patients were genotyped by using a PCR restriction fragment length polymorphism (PCR-RFLP) assay. RESULTS MCP-1 serum levels were significantly higher in NPDR and PDR patients than in the DWR patients. The frequencies of the GG genotype and G allele of the single nucleotide polymorphism (SNP) were significantly increased in DR patients compared with DWR patients. Further subgroup analysis was performed to test whether there was an association between the PDR or NPDR and DWR groups. Significantly higher frequencies of the GG genotype and G allele were observed in PDR and NPDR patients compared with DWR patients. Furthermore, the 25 patients with PDR were divided into three groups according to the genotype of the tested SNP. The expression of the MCP-1 gene was higher in the GG genotype group compared with the other two groups. CONCLUSIONS The results suggested that the -2518 GG genotype and G allele of MCP-1 are associated with an increased risk of PDR in the Chinese Han population. This polymorphism may influence the expression of the MCP-1 gene, which may play an important role in the pathogenesis of DR.
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Affiliation(s)
- Z Jiang
- Department of Ophthalmology, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - L Hennein
- Department of Ophthalmology, University of California San Francisco, San Francisco, USA
- University of California San Francisco, School of Medicine, San Francisco, USA
| | - Y Xu
- Department of Ophthalmology, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - N Bao
- Department of Ophthalmology, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
| | - P Coh
- Department of Ophthalmology, University of California San Francisco, San Francisco, USA
| | - L Tao
- Department of Ophthalmology, Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
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24
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Xie L, Bao N, Jiang Y, Han K, Zhou J. An instrument for charge measurement due to a single collision between two spherical particles. Rev Sci Instrum 2016; 87:014705. [PMID: 26827339 DOI: 10.1063/1.4939727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
It universally exists in moving particular systems that particles can be electrified, in which the particles are chemically identical, just as toner particles, coal dust, and pharmaceutical powders. However, owing to the limit of experimental instruments, so far, there are yet no experiments to illustrate whether a particle can be electrified due to a single collision between two spherical particles, and there are also no experiments to measure the charge carried by a single particle due to a single collision between two particles. So we have developed an instrument for charge measurement due to a single collision between two spheres. The instrument consists of two-sphere collision device, collision charge measurement apparatus, and particles' trajectory tracking system. By using this instrument, we can investigate the collision contact electrification due to a single collision between two spheres and simultaneously record the moving trajectories of spheres after the collision to calculate the rebound angles to identify the contribution of the triboelectrification due to the rubbing between the contact surfaces and the collision contact electrification due to the normal pressure between the contact surfaces.
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Affiliation(s)
- L Xie
- Key Laboratory of Ministry of Education for Mechanics on Western Disaster and Environment, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
| | - N Bao
- Key Laboratory of Ministry of Education for Mechanics on Western Disaster and Environment, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
| | - Y Jiang
- Key Laboratory of Ministry of Education for Mechanics on Western Disaster and Environment, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
| | - K Han
- Key Laboratory of Ministry of Education for Mechanics on Western Disaster and Environment, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
| | - J Zhou
- Key Laboratory of Ministry of Education for Mechanics on Western Disaster and Environment, School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China
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25
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Luo X, Lee WT, Xing G, Bao N, Yonis A, Chu D, Lee J, Ding J, Li S, Yi J. Ferromagnetic ordering in Mn-doped ZnO nanoparticles. Nanoscale Res Lett 2014; 9:625. [PMID: 25435834 PMCID: PMC4244625 DOI: 10.1186/1556-276x-9-625] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 11/07/2014] [Indexed: 06/04/2023]
Abstract
Zn1 - x Mn x O nanoparticles have been synthesized by hydrothermal technique. The doping concentration of Mn can reach up to 9 at% without precipitation or secondary phase, confirmed by electron spin resonance (ESR) and synchrotron X-ray diffraction (XRD). Room-temperature ferromagnetism is observed in the as-prepared nanoparticles. However, the room-temperature ferromagnetism disappears after post-annealing in either argon or air atmosphere, indicating the importance of post-treatment for nanostructured magnetic semiconductors.
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Affiliation(s)
- Xi Luo
- School of Materials Science and Engineering, University of New South Wales, Kensington, 2 High Street, Sydney, NSW 2052, Australia
| | - Wai-Tung Lee
- Bragg Institute, ANSTO, New Illawarra Road, Lucas Heights NSW 2234, Australia
| | - Guozhong Xing
- School of Materials Science and Engineering, University of New South Wales, Kensington, 2 High Street, Sydney, NSW 2052, Australia
| | - Nina Bao
- Department of Materials Science and Engineering, National University of Singapore, 10 Kent Ridge Road, Singapore 119260, Singapore
| | - Adnan Yonis
- School of Materials Science and Engineering, University of New South Wales, Kensington, 2 High Street, Sydney, NSW 2052, Australia
| | - Dewei Chu
- School of Materials Science and Engineering, University of New South Wales, Kensington, 2 High Street, Sydney, NSW 2052, Australia
| | - Jiunn Lee
- School of Materials Science and Engineering, University of New South Wales, Kensington, 2 High Street, Sydney, NSW 2052, Australia
| | - Jun Ding
- Department of Materials Science and Engineering, National University of Singapore, 10 Kent Ridge Road, Singapore 119260, Singapore
| | - Sean Li
- School of Materials Science and Engineering, University of New South Wales, Kensington, 2 High Street, Sydney, NSW 2052, Australia
| | - Jiabao Yi
- School of Materials Science and Engineering, University of New South Wales, Kensington, 2 High Street, Sydney, NSW 2052, Australia
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26
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Affiliation(s)
- Bin Gong
- Mark Wainwright Analytical Centre; The University of New South Wales; Sydney NSW 2052 Australia
| | - Xi Luo
- School of Materials Science and Engineering; The University of New South Wales; Sydney NSW 2052 Australia
| | - Nina Bao
- Department of Materials Science and Engineering; National University of Singapore; 119260 Singapore
| | - Jun Ding
- Department of Materials Science and Engineering; National University of Singapore; 119260 Singapore
| | - Sean Li
- School of Materials Science and Engineering; The University of New South Wales; Sydney NSW 2052 Australia
| | - Jiabao Yi
- School of Materials Science and Engineering; The University of New South Wales; Sydney NSW 2052 Australia
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27
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Zeng Z, Lee S, Zafra JL, Ishida M, Bao N, Webster RD, López Navarrete JT, Ding J, Casado J, Kim D, Wu J. Turning on the biradical state of tetracyano-perylene and quaterrylenequinodimethanes by incorporation of additional thiophene rings. Chem Sci 2014. [DOI: 10.1039/c4sc00659c] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Incorporation of additional thiophene rings to the quinoidal rylenes results in dramatic changes of their ground states and physical properties.
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Affiliation(s)
- Zebing Zeng
- Department of Chemistry
- National University of Singapore
- , Singapore
| | - Sangsu Lee
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry
- Yonsei University
- Seoul 120-749, Korea
| | - José L. Zafra
- Department of Physical Chemistry
- University of Malaga
- 229071 Malaga, Spain
| | - Masatoshi Ishida
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry
- Yonsei University
- Seoul 120-749, Korea
| | - Nina Bao
- Department of Materials Science & Engineering
- National University of Singapore
- , Singapore
| | - Richard D. Webster
- Division of Chemistry & Biological Chemistry
- School of Physical & Mathematical Sciences
- Nanyang Technological University
- , Singapore
| | | | - Jun Ding
- Department of Materials Science & Engineering
- National University of Singapore
- , Singapore
| | - Juan Casado
- Department of Physical Chemistry
- University of Malaga
- 229071 Malaga, Spain
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry
- Yonsei University
- Seoul 120-749, Korea
| | - Jishan Wu
- Department of Chemistry
- National University of Singapore
- , Singapore
- Institute of Materials Research and Engineering
- A*STAR
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28
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Zeng Z, Ishida M, Zafra JL, Zhu X, Sung YM, Bao N, Webster RD, Lee BS, Li RW, Zeng W, Li Y, Chi C, López Navarrete JT, Ding J, Casado J, Kim D, Wu J. Pushing extended p-quinodimethanes to the limit: stable tetracyano-oligo(N-annulated perylene)quinodimethanes with tunable ground states. J Am Chem Soc 2013; 135:6363-71. [PMID: 23560651 DOI: 10.1021/ja402467y] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
p-Quinodimethane (p-QDM) is a fundamental building block for the design of π-conjugated systems with low band gap and open-shell biradical character. However, synthesis of extended p-QDMs has usually suffered from their intrinsic high reactivity and poor solubility. In this work, benzannulation together with terminal cyano-substitution was demonstrated to be an efficient approach for the synthesis of a series of soluble and stable tetracyano-oligo(N-annulated perylene)quinodimethanes nPer-CN (n = 1-6), with the longest molecule having 12 para-linked benzenoid rings! The geometry and electronic structures of these oligomers were investigated by steady-state and transient absorption spectroscopy, nuclear magnetic resonance, electron spin resonance, superconducting quantum interference device, and FT Raman spectroscopy assisted by density functional theory calculations. They showed tunable ground states, varying from a closed-shell quinoidal structure for monomer, to a singlet biradical for dimer, trimer, and tetramer, and to a triplet biradical for pentamer and hexamer. Large two-photon absorption cross-section values were observed in the near-infrared range, which also exhibited a clear chain-length dependence.
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Affiliation(s)
- Zebing Zeng
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
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29
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Li Y, Heng WK, Lee BS, Aratani N, Zafra JL, Bao N, Lee R, Sung YM, Sun Z, Huang KW, Webster RD, López Navarrete JT, Kim D, Osuka A, Casado J, Ding J, Wu J. Kinetically Blocked Stable Heptazethrene and Octazethrene: Closed-Shell or Open-Shell in the Ground State? J Am Chem Soc 2012; 134:14913-22. [DOI: 10.1021/ja304618v] [Citation(s) in RCA: 216] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yuan Li
- Department of Chemistry, National University of Singapore, 3 Science Drive 3,
117543, Singapore
| | - Wee-Kuan Heng
- Department of Chemistry, National University of Singapore, 3 Science Drive 3,
117543, Singapore
| | - Byung Sun Lee
- Spectroscopy
Laboratory for
Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Naoki Aratani
- Department of Chemistry, Graduate
School of Science, Kyoto University, Sakyo-ku,
Kyoto 606-8502, Japan
| | - José L. Zafra
- Department
of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 229071
Malaga, Spain
| | - Nina Bao
- Department of Materials Science & Engineering, National University of Singapore, 119260, Singapore
| | - Richmond Lee
- Division of Chemical and Life Sciences
and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal
23955-6900, Saudi Arabia
| | - Young Mo Sung
- Spectroscopy
Laboratory for
Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Zhe Sun
- Department of Chemistry, National University of Singapore, 3 Science Drive 3,
117543, Singapore
| | - Kuo-Wei Huang
- Division of Chemical and Life Sciences
and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal
23955-6900, Saudi Arabia
| | - Richard D. Webster
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Juan T. López Navarrete
- Department
of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 229071
Malaga, Spain
| | - Dongho Kim
- Spectroscopy
Laboratory for
Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Atsuhiro Osuka
- Department of Chemistry, Graduate
School of Science, Kyoto University, Sakyo-ku,
Kyoto 606-8502, Japan
| | - Juan Casado
- Department
of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 229071
Malaga, Spain
| | - Jun Ding
- Department of Materials Science & Engineering, National University of Singapore, 119260, Singapore
| | - Jishan Wu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3,
117543, Singapore
- Institute
of Materials Research
and Engineering, A*Star, 3 Research Link,
Singapore, 117602
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30
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Zeng Z, Sung YM, Bao N, Tan D, Lee R, Zafra JL, Lee BS, Ishida M, Ding J, López Navarrete JT, Li Y, Zeng W, Kim D, Huang KW, Webster RD, Casado J, Wu J. Stable Tetrabenzo-Chichibabin’s Hydrocarbons: Tunable Ground State and Unusual Transition between Their Closed-Shell and Open-Shell Resonance Forms. J Am Chem Soc 2012; 134:14513-25. [DOI: 10.1021/ja3050579] [Citation(s) in RCA: 179] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zebing Zeng
- Department of Chemistry, National University of Singapore, 3
Science Drive 3, 117543, Singapore
| | - Young Mo Sung
- Spectroscopy Laboratory for
Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Nina Bao
- Department of Materials Science & Engineering, National University of Singapore, 119260, Singapore
| | - Davin Tan
- Division of Chemical and Life
Sciences and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Richmond Lee
- Division of Chemical and Life
Sciences and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - José L. Zafra
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 229071
Malaga, Spain
| | - Byung Sun Lee
- Spectroscopy Laboratory for
Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Masatoshi Ishida
- Spectroscopy Laboratory for
Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Jun Ding
- Department of Materials Science & Engineering, National University of Singapore, 119260, Singapore
| | - Juan T. López Navarrete
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 229071
Malaga, Spain
| | - Yuan Li
- Department of Chemistry, National University of Singapore, 3
Science Drive 3, 117543, Singapore
| | - Wangdong Zeng
- Department of Chemistry, National University of Singapore, 3
Science Drive 3, 117543, Singapore
| | - Dongho Kim
- Spectroscopy Laboratory for
Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul 120-749, Korea
| | - Kuo-Wei Huang
- Division of Chemical and Life
Sciences and Engineering and KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Richard D. Webster
- Division of Chemistry & Biological Chemistry, School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
| | - Juan Casado
- Department of Physical Chemistry, University of Malaga, Campus de Teatinos s/n, 229071
Malaga, Spain
| | - Jishan Wu
- Department of Chemistry, National University of Singapore, 3
Science Drive 3, 117543, Singapore
- Institute
of Materials Research
and Engineering, A*Star, 3 Research Link,
117602, Singapore
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31
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Poroyko V, Morowitz M, Bell T, Ulanov A, Wang M, Donovan S, Bao N, Gu S, Hong L, Alverdy JC, Bergelson J, Liu DC. Diet creates metabolic niches in the "immature gut" that shape microbial communities. NUTR HOSP 2012; 26:1283-95. [PMID: 22411374 DOI: 10.1590/s0212-16112011000600015] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Accepted: 07/11/2011] [Indexed: 11/22/2022] Open
Abstract
Although diet composition has been implicated as a major factor in the etiology of various gastrointestinal diseases, conclusive evidence remains elusive. This is particularly true in diseases such as necrotizing enterocolitis where breast milk as opposed to commercial formula appears to confer a "protective effect" to the "immature gut." Yet the mechanism by which this occurs continues to remain speculative. In the present study we hypothesize that the basic chemical composition of diet fundamentally selects for specific intestinal microbiota which may help explain disparate disease outcome and therapeutic direction. Complimentary animal and human studies were conducted on young piglets (21 d.)(n = 8) (IACUC protocols 08070 and 08015) and premature infants (adjusted gestational age 34-36 weeks) (n = 11) (IRB Protocol 15895A). In each study, cecal or stool contents from two groups (Breast milk-fed (BF) vs. Formula-fed (FF)) were analyzed by gas chromatography/mass spectrometry (GC/MS) and comprehensive metabolic profiles generated and compared. Concurrently, bacterial community structure was assayed and respective representative microbiota of the groups determined by 16S rRNA gene amplicon pyrosequencing. Statistical modeling and analysis was done using SIMCA-P+ and R software. GC/MS metabolomics identified clear differences between BF and FF groups in the intestinal environment of piglets and humans. Sugars, amino-sugars, fatty acids, especially unsaturated fatty acids, and sterols were identified as being among the most important metabolites for distinguishing between BF and FF groups. Joint analysis of microbiota and metabolomics pinpointed specific sets of metabolites (p < 0.05) associated with the dominant bacterial taxa. The chemical composition of diet appears to have a significant role in defining the microbiota of the immature gut. Tandem analysis of intestinal microbial and metabolic profiles is potentially a powerful tool leading to better understanding of the role of diet in disease perhaps even leading to specific strategies to alter microbial behavior to improve clinical outcome.
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Affiliation(s)
- V Poroyko
- Department of Surgery, The University of Chicago, Chicago, IL, USA
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32
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Paulose M, Peng L, Varghese O, Popat K, LaTempa T, Bao N, Desai T, Grimes C. Corrigendum to “Fabrication of mechanically robust, large area, polycrystalline nanotubular/porous TiO2 membranes” [J. Membr. Sci. 319 (2008) 199–205]. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.09.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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33
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Paulose M, Peng L, Varghese O, Popat K, LaTempa T, Bao N, Desai T, Grimes C. WITHDRAWN: Corrigendum to “Fabrication of mechanically robust, large area, polycrystalline nanotubular/porous TiO2 membranes” [J. Membr. Sci. 319 (2008) 199–205]. J Memb Sci 2010. [DOI: 10.1016/j.memsci.2010.09.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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34
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Abstract
The upper side of the angiosperm leaf is specialized for efficient capture of sunlight whereas the lower side is specialized for gas exchange. In Arabidopsis, the establishment of polarity in the leaf probably requires the generation and perception of positional information along the radial (adaxial versus abaxial or central versus peripheral) dimension of the plant. This is because the future upper (adaxial) side of the leaf develops from cells closer to the centre of the shoot, whereas the future under (abaxial) side develops from cells located more peripherally. Here we implicate the Arabidopsis PHABULOSA and PHAVOLUTA genes in the perception of radial positional information in the leaf primordium. Dominant phabulosa (phb) and phavoluta (phv) mutations cause a dramatic transformation of abaxial leaf fates into adaxial leaf fates. They do so by altering the predicted sterol/lipid-binding domains of ATHB14 and ATHB9, proteins of previously unknown function that also contain DNA-binding motifs. This change probably renders the protein constitutively active, implicating this domain as a central regulator of protein function and the PHB and PHV proteins as receptors for an adaxializing signal.
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Affiliation(s)
- J R McConnell
- Department of Genetics, University of Wisconsin-Madison, 53706, USA
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