1
|
Zhang Y, Guo Z, Mo X, Su C, Chen Y, Qiu R, Pang J, Wu S. Addition of konjac glucomannan improves spraying efficiency on fruits and vegetables: Effect of surface hydrophilicity and molecular weight. Int J Biol Macromol 2024; 262:130012. [PMID: 38331076 DOI: 10.1016/j.ijbiomac.2024.130012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/28/2024] [Accepted: 02/05/2024] [Indexed: 02/10/2024]
Abstract
Biomacromolecules have attracted interest as spraying additives due to their degradability, renewability, and non-toxicity. However, microscopic mechanism of the biomacromolecules regulating the droplet behavior on fruits and vegetables is still unclear. In this study, konjac glucomannan (KGM) was used to improve the spraying efficiency and the fresh-keeping performance of tea polyphenols solution. KGM increased effective spreading ratio on hydrophilic surfaces and retention ratio of the main droplet on hydrophobic surfaces, thus improving spraying efficiency. Computational fluid dynamics and Brown dynamics simulations were implemented to investigate KGM behaviors during droplets colliding on hydrophilic and hydrophobic surfaces. Most KGM molecules extended and then collapsed in gradually weakened shear flow. Meanwhile, on the hydrophobic surface, most KGM molecules were continuously stretched by the unstable flow field. As the KGM extended, the kinetic energy of droplets converted into elastic energy stored in the KGM, promoting the stability of droplets on target surfaces and improving the spraying efficiency. The KGM molecular weight of 3.8 × 105 Da was optimal from the point of energy storage density. This study provides more understanding of the mechanism of biomacromolecules on spraying efficiency and guidance to develop biomass spraying additives for fruit and vegetable preservation.
Collapse
Affiliation(s)
- Yanting Zhang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zhen Guo
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xinyuan Mo
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Che Su
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yuanyuan Chen
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| | - Jie Pang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Shuyi Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| |
Collapse
|
2
|
Zhang W, Zhang Y, Xia Y, Feng G, Wang Y, Wei C, Tang A, Song K, Qiu R, Wu Y, Jin S. Choline induced cardiac dysfunction by inhibiting the production of endogenous hydrogen sulfide in spontaneously hypertensive rats. Physiol Res 2023; 72:719-730. [PMID: 38215059 PMCID: PMC10805251] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 09/07/2023] [Indexed: 01/14/2024] Open
Abstract
To investigate the exact effects of dietary choline on hypertensive heart disease (HHD) and explore the potential mechanisms, male spontaneously hypertensive rats (SHR) and Wistar Kyoto rats (WKY) were randomly divided into five groups as follows: WKY group, WKY + Choline group, SHR group, SHR + Choline group, and SHR + Choline + NaHS group. In choline treatment groups, rats were fed with 1.3% (w/v) choline in the drinking water for 3 months. The rats in the SHR + Choline + NaHS group were intraperitoneally injected with NaHS (100 micromol/kg/day, a hydrogen sulfide (H2S) donor) for 3 months. After 3 months, left ventricular ejection fraction (LVEF) and fractional shortening (LVFS), the indicators of cardiac function measured by echocardiography, were increased significantly in SHR as compared to WKY, although there was no significant difference in collagen volumes and Bax/Bcl-2 ratio between the two groups, indicating the early stage of cardiac hypertrophy. There was a significant decrease in LVEF and LVFS and an increase in collagen volumes and Bax/Bcl-2 ratio in SHR fed with choline, meanwhile, plasma H2S levels were significantly decreased significantly in SHR fed with choline accompanying by the decrease of cystathionine-gamma-lyase (CSE) activity. Three months of NaHS significantly increased plasma H2S levels, ameliorated cardiac dysfunction and inhibited cardiac fibrosis and apoptosis in SHR fed with choline. In conclusion, choline aggravated cardiac dysfunction in HHD through inhibiting the production of endogenous H2S, which was reversed by supplementation of exogenous H2S donor.
Collapse
Affiliation(s)
- W Zhang
- Department of Physiology, Hebei Medical University, Hebei, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
3
|
Chen J, Xia X, Yan X, Wang W, Yang X, Pang J, Qiu R, Wu S. Machine Learning-Enhanced Biomass Pressure Sensor with Embedded Wrinkle Structures Created by Surface Buckling. ACS Appl Mater Interfaces 2023; 15:46440-46448. [PMID: 37725344 DOI: 10.1021/acsami.3c06809] [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: 09/21/2023]
Abstract
Flexible piezoresistive sensors are core components of many wearable devices to detect deformation and motion. However, it is still a challenge to conveniently prepare high-precision sensors using natural materials and identify similar short vibration signals. In this study, inspired by microstructures of human skins, biomass flexible piezoresistive sensors were prepared by assembling two wrinkled surfaces of konjac glucomannan and k-carrageenan composite hydrogel. The wrinkle structures were conveniently created by hardness gradient-induced surface buckling and coated with MXene sheets to capture weak pressure signals. The sensor was applied to detect various slight body movements, and a machine learning method was used to enhance the identification of similar and short throat vibration signals. The results showed that the sensor exhibited a high sensitivity of 5.1 kPa-1 under low pressure (50 Pa), a fast response time (104 ms), and high stability over 100 cycles. The XGBoost machine learning model accurately distinguished short voice vibrations similar to those of individual English letters. Moreover, experiments and numerical simulations were carried out to reveal the mechanism of the wrinkle structure preparation and the excellent sensing performance. This biomass sensor preparation and the machine learning method will promote the optimization and application of wearable devices.
Collapse
Affiliation(s)
- Jie Chen
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaolu Xia
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaoqian Yan
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Wenjing Wang
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Xiaoyi Yang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jie Pang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Shuyi Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| |
Collapse
|
4
|
Zhou P, Fu Y, Wang M, Qiu R, Wang Y, Stoddart JF, Wang Y, Chen H. Robust Single-Supermolecule Switches Operating in Response to Two Different Noncovalent Interactions. J Am Chem Soc 2023; 145:18800-18811. [PMID: 37590178 DOI: 10.1021/jacs.3c03282] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Supramolecular electronics provide an opportunity to introduce molecular assemblies into electronic devices through a combination of noncovalent interactions such as [π···π] and hydrogen-bonding interactions. The fidelity and dynamics of noncovalent interactions hold considerable promise when it comes to building devices with controllable and reproducible switching functions. Here, we demonstrate a strategy for building electronically robust switches by harnessing two different noncovalent interactions between a couple of pyridine derivatives. The single-supermolecule switch is turned ON when compressing the junction enabling [π···π] interactions to dominate the transport, while the switch is turned OFF by stretching the junction to form hydrogen-bonded dimers, leading to a dramatic decrease in conductance. The robustness and reproducibility of these single-supermolecule switches were achieved by modulating the junction with Ångström precision at frequencies of up to 190 Hz while obtaining high ON/OFF ratios of ∼600. The research presented herein opens up an avenue for designing robust bistable mechanoresponsive devices which will find applications in the building of integrated circuits for microelectromechanical systems.
Collapse
Affiliation(s)
- Ping Zhou
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| | - Yanjun Fu
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| | - Maolin Wang
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| | - Renhui Qiu
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| | - Yuwei Wang
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| | - J Fraser Stoddart
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia
| | - Yuping Wang
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| | - Hongliang Chen
- Stoddart Institute of Molecular Science, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 311215, China
| |
Collapse
|
5
|
Wang W, Wu Y, Liu W, Fu T, Qiu R, Wu S. Tensile Performance Mechanism for Bamboo Fiber-Reinforced, Palm Oil-Based Resin Bio-Composites Using Finite Element Simulation and Machine Learning. Polymers (Basel) 2023; 15:2633. [PMID: 37376279 DOI: 10.3390/polym15122633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/04/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Plant fiber-reinforced composites have the advantages of environmental friendliness, sustainability, and high specific strength and modulus. They are widely used as low-carbon emission materials in automobiles, construction, and buildings. The prediction of their mechanical performance is critical for material optimal design and application. However, the variation in the physical structure of plant fibers, the randomness of meso-structures, and the multiple material parameters of composites limit the optimal design of the composite mechanical properties. Based on tensile experiments on bamboo fiber-reinforced, palm oil-based resin composites, finite element simulations were carried out and the effect of material parameters on the tensile performances of the composites was investigated. In addition, machine learning methods were used to predict the tensile properties of the composites. The numerical results showed that the resin type, contact interface, fiber volume fraction, and multi-factor coupling significantly influenced the tensile performance of the composites. The results of the machine learning analysis showed that the gradient boosting decision tree method had the best prediction performance for the tensile strength of the composites (R2 was 0.786) based on numerical simulation data from a small sample size. Furthermore, the machine learning analysis demonstrated that the resin performance and fiber volume fraction were critical parameters for the tensile strength of composites. This study provides an insightful understanding and effective route for investigating the tensile performance of complex bio-composites.
Collapse
Affiliation(s)
- Wenjing Wang
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Yuchao Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Wendi Liu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Tengfei Fu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Shuyi Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| |
Collapse
|
6
|
Liu J, Zhang Y, Mo X, Zhang M, Qiu R, Pang J, Wu S. Adding Konjac Glucomannan for Enhancing the Whole Spraying Performance on Superhydrophobic and Hydrophilic Surfaces. ACS Appl Mater Interfaces 2023; 15:24788-24797. [PMID: 37184306 DOI: 10.1021/acsami.3c00127] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Spraying is a common way to coat solutions onto surfaces evenly. Improving spraying effectiveness can avoid wasting solutions and reduce pollution. In this study, a trace amount of natural polysaccharide, konjac glucomannan (KGM), was added into solutions to regulate the spraying performances including the breakup of liquid jets, size of produced droplets, and collision and spreading of droplets on both superhydrophobic and hydrophilic surfaces. The shear viscosity, extensive viscosity, and surface tension of the KGM solutions were tested. The results of spraying experiments showed that adding KGM inhibited the liquid jet from breaking into small droplets, avoided the breakage of droplets on superhydrophobic surfaces, and promoted the spreading of liquid films on hydrophilic surfaces. The numerical simulation showed the stretching of single macromolecules and quantified the energy stored in molecular chains in a shear-dominated flow field during the spreading of droplets on surfaces and an elongational-dominated flow field during the breakage of a liquid bridge. The storage and dissipation of energy during the stretching and relaxing of KMG macromolecules were important origins of the increase in the colloid viscosity and molecular mechanisms of the effect of the KGM additive on spraying performances. This study provided an understanding and a strategy for optimization and application of spraying additives.
Collapse
Affiliation(s)
- Jingwen Liu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Yanting Zhang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Xinyuan Mo
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Minhua Zhang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China
| | - Jie Pang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Shuyi Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China
| |
Collapse
|
7
|
Liu L, Zhang Y, Dao L, Huang X, Qiu R, Pang J, Wu S. Efficient and accurate multi-scale simulation for viscosity mechanism of konjac glucomannan colloids. Int J Biol Macromol 2023; 236:123992. [PMID: 36898457 DOI: 10.1016/j.ijbiomac.2023.123992] [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: 10/01/2022] [Revised: 02/23/2023] [Accepted: 03/06/2023] [Indexed: 03/11/2023]
Abstract
The viscosity is a foundational parameter of biomacromolecule in the food industry. The viscosity of macroscopic colloids is closely related to the dynamical behaviors of mesoscopic biomacromolecule clusters, which are difficult to be investigated at molecular resolution by common methods. In this study, based on experimental data, multi-scale simulations combining microscopic molecular dynamics simulation, mesoscopic Brownian dynamics simulation, and macroscopic flow field construction were used to investigate the dynamical behaviors of mesoscopic clusters of konjac glucomannan (KGM) colloids (~500 nm) over a long time (~100 ms). Numerical statistical parameters of the mesoscopic simulation of macroscopic clusters were proposed and proved to represent the viscosity of colloids. Based on the intermolecular interaction and macromolecular conformation, the mechanism of the shear thinning effect was revealed as both the regular arrangement of macromolecules at low shear rates (<100 s-1) and structural collapse of macromolecules at high shear rates (>500 s-1). Then, the effect of molecular concentration, molecular weight, and temperature on the colloid viscosity and cluster structure of KGM colloids was investigated by experiments and simulations. This study provides a novel multi-scale numerical method and insight into the viscosity mechanism of biomacromolecule.
Collapse
Affiliation(s)
- Lu Liu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Yanting Zhang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Liping Dao
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Xin Huang
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China.
| | - Jie Pang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
| | - Shuyi Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350108, China.
| |
Collapse
|
8
|
Xu J, Yang Y, Liu L, Huang X, Wu C, Pang J, Qiu R, Wu S. Micro-structure and tensile properties of microfluidic spinning konjac glucomannan and sodium alginate composite bio-fibers regulated by shear and elongational flow: experiment and multi-scale simulation. Int J Biol Macromol 2023; 227:777-785. [PMID: 36495989 DOI: 10.1016/j.ijbiomac.2022.11.292] [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: 09/24/2022] [Revised: 11/25/2022] [Accepted: 11/28/2022] [Indexed: 12/13/2022]
Abstract
Microfluidic spinning has been widely used to produce bio-fibers with excellent tensile performances by regulating the conformation of biological macromolecules. However, the effect of channel shapes on fiber tensile performances is unclear. In this study, bio-fibers were prepared using konjac glucomannan and sodium alginate by five channels. The micro-morphology and tensile performance of fibers were characterized and measured. Then, the dynamical behaviours of macromolecule clusters in flow fields were simulated by multi-scale numerical methods. The results show that the elongational flow with increasing extension rates produced fibers with a tensile strength of 32.34 MPa and a tensile strain of 18.72 %, which were 1.37 and 1.55 times that for a shear flow, respectively. The difference in tensile performances was attributed to the micro-morphology regulated by flow fields. The continuously increasing extension rate of flow was more effective than the shear rate or the maximum extension rate for the stretching of macromolecule clusters. We conclude that the channel shapes significantly influence flow fields, dynamical behaviours of molecule clusters, the morphology of fibers, and tensile performances. This study provides a novel numerical method and understanding of microfluidic spinning, which will promote the optimization and applications of bio-fibers.
Collapse
Affiliation(s)
- Jingting Xu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Ying Yang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Lu Liu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xin Huang
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Chunhua Wu
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jie Pang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| | - Shuyi Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| |
Collapse
|
9
|
Qiu R, Wu B, He Y, Huang S, Wang S, Li H, Zheng F. Age-related adiposity and beta-cell function: impact on prediabetes and diabetes prevalence in middle-aged and older Han Chinese adults. J Endocrinol Invest 2023; 46:405-413. [PMID: 36083401 DOI: 10.1007/s40618-022-01917-0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 09/02/2022] [Indexed: 01/25/2023]
Abstract
PURPOSE To investigate the effect of aging on the prevalence of prediabetes and diabetes, and the influence of aging on the associations among adipose mass, redistribution, β cell function, and the prevalence of hyperglycaemia. METHOD This urban-based cross-sectional study included 1033 Chinese Han people, aged 40-65 years. The abdominal subcutaneous fat area (SFA) and visceral fat area (VFA) were determined by magnetic resonance imaging. The prevalence rates of prediabetes and diabetes were analyzed according to age group (40-49, 50-59, and 60-65 years). The effects of aging on abdominal fat mass, adipose distribution, insulin action indexes were also assessed. RESULTS Prediabetes and diabetes prevalence gradually increased with age. Both SFA and VFA increased, while SFA/VFA decreased, in the 50-59 and 60-65 years age groups compared to the 40-49 years group. Homeostatic model assessment of insulin resistance (HOMA-IR) increased with fat mass. Homeostatic model assessment of beta-cell function (HOMA-β) and early-phase insulin secretion (∆I30/∆G30) were decreased in the 60-65 years group compared to the younger age groups. Increased age, VFA, and HOMA-IR, as well as decreased HOMA-β, were risk factors for the development of prediabetes and diabetes. The associations between central obesity and the development of prediabetes and diabetes, but not the associations of SFA/VFA, HOMA-IR, and HOMA-β with hyperglycaemia prevalence, weakened with age. CONCLUSIONS The prevalence of prediabetes and diabetes increased with age. Central obesity may be related stronger to the development of hyperglycaemia in younger people.
Collapse
Affiliation(s)
- R Qiu
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, 3 East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - B Wu
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, 3 East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - Y He
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, 3 East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - S Huang
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, 3 East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - S Wang
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, 3 East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - H Li
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, 3 East Qingchun Road, Hangzhou, 310016, Zhejiang, China
| | - F Zheng
- Department of Endocrinology, The Affiliated Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, 3 East Qingchun Road, Hangzhou, 310016, Zhejiang, China.
| |
Collapse
|
10
|
Chen Y, Zeng Y, Wu Y, Chen T, Qiu R, Liu W. Flame-Retardant and Recyclable Soybean Oil-Based Thermosets Enabled by the Dynamic Phosphate Ester and Tannic Acid. ACS Appl Mater Interfaces 2023; 15:5963-5973. [PMID: 36650640 DOI: 10.1021/acsami.2c21279] [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: 06/17/2023]
Abstract
The demands of safety and sustainability have driven the development of intrinsic flame-retardant biobased polymers from renewable materials. Herein, a mechanically robust, good flame-retardant, and recyclable thermoset was developed from renewable epoxidized soybean oil (ESO) by using 2-hydroxyethyl methacrylate phosphate (HEMAP) as the reactive flame retardant and tannic acid (TA) as the charring agent. The flame resistance of the obtained ESO-based thermoset achieved the highest UL-94 of V-0 rating and a limited oxygen index value of 26.7% due to the synergistic flame-retardant effect of phosphate and TA. The flame-retardant mechanisms of the gaseous phase and condensed phase were fully investigated by thermogravimetric infrared, scanning electron microscopy-energy-dispersive spectrometry, X-ray photoelectron spectroscopy, and Raman spectra. It is confirmed that the incorporation of phosphate and TA could effectively promote the formation of dense carbon layers and delay the pyrolysis of long aliphatic chains. The ternary crosslinking of ESO, HEMAP, and TA via free-radical polymerization and epoxy-ring opening reaction resulted in a rigid network with a high crosslink density, bestowing the thermoset with superior tensile strength (20.0 MPa), flexural strength (36.3 MPa), and bonding strength (16.7 MPa on steel). Moreover, the ESO-based thermoset exhibited a fast stress relaxation behavior due to the transesterification of dynamic β-hydroxyl phosphate esters, which enables the network with thermal-healing ability and recyclability. This study explores a feasible method to prepare an intrinsic flame-retardant polymer from commercially available and renewable vegetable oils and natural polyphenols.
Collapse
Affiliation(s)
- Yizhen Chen
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou350108, P. R. China
| | - Yong Zeng
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou350108, P. R. China
| | - Yuchao Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou350108, P. R. China
| | - Tingting Chen
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou350108, P. R. China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou350108, P. R. China
| | - Wendi Liu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou350108, P. R. China
| |
Collapse
|
11
|
Li XJ, Yao CX, Qiu R, Bai JK, Liu C, Chen YG, Li SJ. Isolation, identification, and evaluation of the biocontrol potential of a Bacillus velezensis strain against tobacco root rot caused by Fusarium oxysporum. J Appl Microbiol 2023; 134:6917145. [PMID: 36626796 DOI: 10.1093/jambio/lxac049] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 10/09/2022] [Accepted: 11/07/2022] [Indexed: 01/12/2023]
Abstract
AIMS Tobacco (Nicotiana tabacum) is an economically important crop. Root rot caused by Fusarium oxysporum has become a damaging disease in N. tabacum crops grown in Henan province of China. Therefore, the objectives of this study were to screen bacterial isolates against F. oxysporum from rhizosphere soils of tobacco growing areas and to evaluate their antifungal activities, biocontrol effects, and effects on plant growth. METHODS AND RESULTS Nineteen strains with antifungal inhibition effects of >60% against F. oxysporum were obtained using the method of flat confrontation; the strain Ba-0321 was the strongest, with an antifungal effect of 75%. Moreover, this strain had broad spectrum antimicrobial activity to eight additional tobacco pathogens. The strain was identified as Bacillus velezensis by morphology and the 16S rDNA sequence. The B. velezensis strain Ba-0321 had strong UV resistance as well as tolerance to high temperatures and low nutrition. The bacteria inhibited spore germination and mycelial growth of F. oxysporum under in vitro co-culture conditions. In vivo assays demonstrated that the Ba-0321 strain significantly reduced the pathogenicity of F. oxysporum, resulting in a control effect on tobacco root rot of 81.00%. Simultaneously, the bacteria significantly promoted root development and the growth of tobacco plants. CONCLUSION Our results confirmed that the B. velezensis strain Ba-0321 has a strong antifungal effect and stress resistance that enable it to be used as a biological control agent for tobacco root rot caused by F. oxysporum. SIGNIFICANCE AND IMPACT OF THE STUDY Tobacco root rot caused by F. oxysporum has become a damaging disease in China. The B. velezensis strain Ba-0321 has promising application value for controlling tobacco root rot diseases, and it could provide a new biocontrol agent against root rot caused by F. oxysporum in other plant species.
Collapse
Affiliation(s)
- X J Li
- Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area, Tobacco Research Institute of Henan Academy of Agricultural Sciences, Xuchang, Henan 450002, China
| | - C X Yao
- Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area, Tobacco Research Institute of Henan Academy of Agricultural Sciences, Xuchang, Henan 450002, China.,College of Plant Protection, Northwest A&F University, Shanxi, Yangling 712100, China
| | - R Qiu
- Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area, Tobacco Research Institute of Henan Academy of Agricultural Sciences, Xuchang, Henan 450002, China
| | - J K Bai
- Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area, Tobacco Research Institute of Henan Academy of Agricultural Sciences, Xuchang, Henan 450002, China
| | - C Liu
- Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area, Tobacco Research Institute of Henan Academy of Agricultural Sciences, Xuchang, Henan 450002, China
| | - Y G Chen
- Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area, Tobacco Research Institute of Henan Academy of Agricultural Sciences, Xuchang, Henan 450002, China
| | - S J Li
- Key Laboratory for Green Preservation & Control of Tobacco Diseases and Pests in Huanghuai Growing Area, Tobacco Research Institute of Henan Academy of Agricultural Sciences, Xuchang, Henan 450002, China
| |
Collapse
|
12
|
He H, Teng H, An F, Wang Y, Qiu R, Chen L, Song H. Nanocelluloses review: Preparation, biological properties, safety, and applications in the food field. Food Frontiers 2023. [DOI: 10.1002/fft2.208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Affiliation(s)
- Hong He
- College of Food Science Fujian Agriculture and Forestry University Fuzhou Fujian China
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch Fuzhou Fujian China
| | - Hui Teng
- College of Food Science and Technology Guangdong Ocean University Zhanjiang China
| | - Fengping An
- College of Food Science Fujian Agriculture and Forestry University Fuzhou Fujian China
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch Fuzhou Fujian China
| | - Yiwei Wang
- College of Food Science Fujian Agriculture and Forestry University Fuzhou Fujian China
| | - Renhui Qiu
- College of Material Engineering Fujian Agriculture and Forestry University Fuzhou China
| | - Lei Chen
- College of Food Science and Technology Guangdong Ocean University Zhanjiang China
| | - Hongbo Song
- College of Food Science Fujian Agriculture and Forestry University Fuzhou Fujian China
- Fujian Provincial Key Laboratory of Quality Science and Processing Technology in Special Starch Fuzhou Fujian China
| |
Collapse
|
13
|
Chen J, Jian M, Yang X, Xia X, Pang J, Qiu R, Wu S. Highly Effective Multifunctional Solar Evaporator with Scaffolding Structured Carbonized Wood and Biohydrogel. ACS Appl Mater Interfaces 2022; 14:46491-46501. [PMID: 36149391 DOI: 10.1021/acsami.2c11399] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
A solar evaporator that utilizes solar radiation energy can be a renewable approach to deal with energy crisis and fresh water shortage. In this study, a solar evaporator was prepared by assembling composite carbonized wood of Melaleuca Leucadendron L. and biobased hydrogel. The multilayer MXene (Ti3C2Tx) was embedded in the scaffolding structure of the wood to form composite carbonized wood, where the loose and ordered scaffolding structure of the carbonized wood significantly improves the efficiency of water transportation with increased capillary force. The MXene adsorbed in the carbonized wood has high binding energy with water molecules, leading to reduction of vaporization enthalpy and contact angle. Moreover, the addition of MXene can improve the light absorbance, especially for the infrared and ultraviolet light bands. The hydrogel was fabricated by crosslinking konjac glucomannan and sodium alginate polysaccharides with Ca2+, and it has a lower thermal conductivity than water and improves the evaporation efficiency by regulating the temperature distribution and concentrating the heat on the surface of the evaporator. This solar evaporator has an evaporation rate of 3.71 kg·m-2·h-1 and an evaporation efficiency of 129.64% under 2 sun illumination and is available to generate an open-circuit voltage of 1.8 mV after a 20 min hydrovoltaic, demonstrating a high performance and versatility. Also, experiments and numerical simulation were carried out to understand the mechanism and design principles of this solar evaporators.
Collapse
Affiliation(s)
- Jie Chen
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Muqiang Jian
- Beijing Graphene Institute, Beijing 100095, China
| | - Xiaoyi Yang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xiaolu Xia
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Jie Pang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| | - Shuyi Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China
| |
Collapse
|
14
|
Fitzgerald D, Ho E, Miller E, Qiu R, Antignani A. Antitumor activity of Antibody-Drug Conjugates targeting cancer-expressed EGFR in Preclinical Models. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01028-0] [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: 11/03/2022]
|
15
|
Qiu R, Zhang J, Wei J, Wu W. Etiological analysis and risk factors of nosocomial infection in kidney tranplantation recipients in donation after citizens'death. Asian J Surg 2022; 46:1643-1644. [PMID: 36253262 DOI: 10.1016/j.asjsur.2022.09.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 09/22/2022] [Indexed: 11/29/2022] Open
Affiliation(s)
- Renhui Qiu
- Dongfang Hospital, Xiamen University, Fuzhou, Fujian, China.
| | - Jiajing Zhang
- Xingang Street Community Health Service Center, 408 Guohuo West Road, Fuzhou, Fujian, China.
| | - Junjie Wei
- Department of Urology Surgery, Fuzhou General Hospital Clinical Medical College, Fujian Medical University, Fuzhou, Fujian, China.
| | - Weizhen Wu
- Department of Urology Surgery, 900th Hospital of Joint Logistics Support Force of People's Liberation Army, Fuzhou, Fujian, China.
| |
Collapse
|
16
|
Liu L, Zhou N, Yang Y, Huang X, Qiu R, Pang J, Wu S. Rheological properties of konjac glucomannan composite colloids in strong shear flow affected by mesoscopic structures: multi-scale simulation and experiment. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129850] [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: 11/03/2022]
|
17
|
Qiu R, Zhang J, Wu W, Xiao C. Prostate carcinoma metastasis to colon. Asian J Surg 2022; 45:2083-2084. [PMID: 35523607 DOI: 10.1016/j.asjsur.2022.04.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 04/21/2022] [Indexed: 11/17/2022] Open
Affiliation(s)
- Renhui Qiu
- Dongfang Hospital, Xiamen University, Fuzhou, Fujian, China.
| | - Jiajing Zhang
- Xingang Street Community Health Service Center, 402 Guohuo West Road, Fuzhou, Fujian, China.
| | - Weizhen Wu
- Department of Urology Surgery, 900th Hospital of Joint Logistics Support Force of People's Liberation Army, Fuzhou, Fujian, China.
| | - Chunhong Xiao
- Department of General Surgery, 900th Hospital of Joint Logistics Support Force of People's Liberation Army, Fuzhou, Fujian, China.
| |
Collapse
|
18
|
|
19
|
Álvarez Z, Kolberg-Edelbrock AN, Sasselli IR, Ortega JA, Qiu R, Syrgiannis Z, Mirau PA, Chen F, Chin SM, Weigand S, Kiskinis E, Stupp SI. Bioactive scaffolds with enhanced supramolecular motion promote recovery from spinal cord injury. Science 2021; 374:848-856. [PMID: 34762454 DOI: 10.1126/science.abh3602] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
[Figure: see text].
Collapse
Affiliation(s)
- Z Álvarez
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - A N Kolberg-Edelbrock
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - I R Sasselli
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - J A Ortega
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,The Ken & Ruth Davee Department of Neurology, Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - R Qiu
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - Z Syrgiannis
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - P A Mirau
- Materials and Manufacturing Directorate, Nanostructured and Biological Materials Branch, Air Force Research Laboratories, Wright-Patterson AFB, OH 45433, USA
| | - F Chen
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA
| | - S M Chin
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
| | - S Weigand
- DuPont-Northwestern-Dow Collaborative Access Team Synchrotron Research Center, Northwestern University, DND-CAT, Argonne, IL 60439, USA
| | - E Kiskinis
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,The Ken & Ruth Davee Department of Neurology, Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - S I Stupp
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL 60611, USA.,Department of Medicine, Northwestern University, Chicago, IL 60611, USA.,Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA.,Department of Chemistry, Northwestern University, Evanston, IL 60208, USA.,Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208, USA
| |
Collapse
|
20
|
Abstract
Micro-funnels have been widely applied to produce extensionally dominant flows for DNA manipulation, such as DNA extension for DNA mapping and DNA fragmentation for gene sequencing. However, it still lacks a systematic understanding of DNA fragmentation behaviors in complicated flow fields regulated by different funnel shapes with high flow rates. This limits the rational design and application scope of related microfluidic devices. In this study, fragmentation experiments of λ DNA were carried out in microfluidic chips with four different micro-funnel shapes, namely a sudden finish, a linear contraction, a constant acceleration, and an increasing extension rate funnel. The experimental results demonstrated a significant effect of the micro-funnel shape on the produced DNA fragment size. Then, the dynamical behaviors of DNA molecules in flow fields created by different micro-funnels were simulated using a numerical method of Brownian dynamics-computational fluid dynamics. The numerical simulation revealed that both the magnitude and distribution of the extension rate of flow fields were drastically altered by the funnel shape, and the extension rate at the micro-scale was the dominant factor of DNA fragmentation. The different DNA fragmentation behaviors in four micro-funnels were investigated from the perspectives including the fragment size distribution, fragmentation location, percentage of broken molecules, conformational type and stretched length of DNA before fragmentation. The results elucidated the significant impact of funnel shape on the dynamical behaviors of DNA fragmentation. This study offers insights into the rational design of microfluidic chips for DNA manipulation.
Collapse
Affiliation(s)
- Shuyi Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China
| | - Tengfei Fu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350108, China
| | - Luping Xu
- Center for Nano and Micro Mechanics, School of Aerospace Engineering, Tsinghua University, Beijing, 100084, China.
| |
Collapse
|
21
|
Qiu R, Xiao C, Yu S, Wang M. Mixed neuroendocrine-non-neuroendocrine tumor with unique Triphasic Histological Pattern: A challenging case report. Asian J Surg 2021; 45:520-522. [PMID: 34654607 DOI: 10.1016/j.asjsur.2021.09.031] [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: 08/10/2021] [Revised: 08/30/2021] [Accepted: 09/20/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND In 2017, the World Health Organization redefined two different forms of tumor components containing both neuroendocrine and non neuroendocrine as mixed neuroendocrine-non-neuroendocrine tumor (MiNEN). It occurs in different parts of the body, including the urogenital tract,the upper respiratory tract, the digestive tract. It has a very poor prognosis. CASE PRESENTATION A 61 year old man was admitted to hospital with incidental pancreatitis. CT examination showed that the injury of duodenal branch resulted in hematoma formation. Pancreatic space occupying lesions were found by surgical exploration,so he underwent radical pancreatoduodenectomy, right hemicolectomy and jejunostomy. A pathological examination revealed that the tumor was composed of large cell neuroendocrine carcinoma, ductal adenocarcinoma and undifferentiated sarcoma. The tumor invaded the stomach, duodenum and colon. Half a month after the operation, the patient died of leukocytic reaction. CONCLUSIONS At present, MiNEN is rare with Triphasic Histological Pattern. The diagnosis and treatment of MiNEN are challenging.
Collapse
Affiliation(s)
- Renhui Qiu
- Dongfang Hospital, Xiamen University, Fuzhou, Fujian, China.
| | - Chunhong Xiao
- Department of General Surgery, 900th Hospital of Joint Logistics Support Force of People's Liberation Army, Fuzhou, Fujian, China.
| | - Shentong Yu
- Department of Pathology, 900th Hospital of Joint Logistics Support Force of People's Liberation Army, 156 North Xi-er Huan Road, Fuzhou, Fujian, China.
| | - Meiping Wang
- Dongfang Hospital, Xiamen University, Fuzhou, Fujian, China.
| |
Collapse
|
22
|
Rabus H, Li WB, Nettelbeck H, Schuemann J, Villagrasa C, Beuve M, Di Maria S, Heide B, Klapproth AP, Poignant F, Qiu R, Rudek B. Consistency checks of results from a Monte Carlo code intercomparison for emitted electron spectra and energy deposition around a single gold nanoparticle irradiated by X-rays. RADIAT MEAS 2021; 147:106637. [PMID: 35669292 PMCID: PMC9165644 DOI: 10.1016/j.radmeas.2021.106637] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Organized by the European Radiation Dosimetry Group (EURADOS), a Monte Carlo code intercomparison exercise was conducted where participants simulated the emitted electron spectra and energy deposition around a single gold nanoparticle (GNP) irradiated by X-rays. In the exercise, the participants scored energy imparted in concentric spherical shells around a spherical volume filled with gold or water as well as the spectral distribution of electrons leaving the GNP. Initially, only the ratio of energy deposition with and without GNP was to be reported. During the evaluation of the exercise, however, the data for energy deposition in the presence and absence of the GNP were also requested. A GNP size of 50 nm and 100 nm diameter was considered as well as two different X-ray spectra (50 kVp and 100kVp). This introduced a redundancy that can be used to cross-validate the internal consistency of the simulation results. In this work, evaluation of the reported results is presented in terms of integral quantities that can be benchmarked against values obtained from physical properties of the radiation spectra and materials involved. The impact of different interaction cross-section datasets and their implementation in the different Monte Carlo codes is also discussed.
Collapse
Affiliation(s)
- H Rabus
- Physikalisch-Technische Bundesanstalt, Braunschweig and Berlin, Germany
- European Radiation Dosimetry Group (EURADOS) e.V, Neuherberg, Germany
| | - W B Li
- Institute of Radiation Medicine, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- European Radiation Dosimetry Group (EURADOS) e.V, Neuherberg, Germany
| | - H Nettelbeck
- Physikalisch-Technische Bundesanstalt, Braunschweig and Berlin, Germany
- European Radiation Dosimetry Group (EURADOS) e.V, Neuherberg, Germany
| | - J Schuemann
- Massachusetts General Hospital & Harvard Medical School, Department of Radiation Oncology, Boston, MA, USA
- European Radiation Dosimetry Group (EURADOS) e.V, Neuherberg, Germany
| | - C Villagrasa
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-Aux-Roses, France
- European Radiation Dosimetry Group (EURADOS) e.V, Neuherberg, Germany
| | - M Beuve
- Institut de Physique des 2 Infinis, Université Claude Bernard Lyon 1, Villeurbanne, France
- European Radiation Dosimetry Group (EURADOS) e.V, Neuherberg, Germany
| | - S Di Maria
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Bobadela LRS, Portugal
- European Radiation Dosimetry Group (EURADOS) e.V, Neuherberg, Germany
| | - B Heide
- Karlsruhe Institute of Technology, Karlsruhe, Germany
- European Radiation Dosimetry Group (EURADOS) e.V, Neuherberg, Germany
| | - A P Klapproth
- Institute of Radiation Medicine, Helmholtz Zentrum München - German Research Center for Environmental Health, Neuherberg, Germany
- TranslaTUM, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - F Poignant
- Institut de Physique des 2 Infinis, Université Claude Bernard Lyon 1, Villeurbanne, France
- Present address: National Institute of Aerospace, Hampton, VA, USA
| | - R Qiu
- Department of Engineering Physics, Tsinghua University, Beijing, China
- European Radiation Dosimetry Group (EURADOS) e.V, Neuherberg, Germany
| | - B Rudek
- Massachusetts General Hospital & Harvard Medical School, Department of Radiation Oncology, Boston, MA, USA
- Present address: Perlmutter Cancer Center, NYU Langone Health, New York City, NY, USA
| |
Collapse
|
23
|
Wu Y, Fei M, Chen T, Li C, Wu S, Qiu R, Liu W. Photocuring Three-Dimensional Printing of Thermoplastic Polymers Enabled by Hydrogen Bonds. ACS Appl Mater Interfaces 2021; 13:22946-22954. [PMID: 33960769 DOI: 10.1021/acsami.1c02513] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The advent of 3D printing has led to a new era of highly customized products. Printing reprocessable thermoplastic polymers is limited to slow printing techniques such as fused deposition modeling. Photocuring 3D printing is a high-speed 3D printing technique suitable for photocurable thermosetting resins because the cross-linked 3D network could achieve rapid solid-liquid separation during printing. However, thermoplastics usually cannot be printed via photocuring 3D printers because rapid solid-liquid separation is hard to be achieved due to the diffusion/dissolution of linear molecular chains in their liquid precursor. Herein, we hypothesize that hydrogen bonds (H-bonds) between monomers may accelerate polymerization and reduce solubility of the polymer in liquid precursors to achieve rapid solid-liquid separation. Using this strategy, a series of UV-curable methacrylic and acrylic monomers was selected as inks to demonstrate the role of H-bonds in photocuring 3D printing. The hypothesis was further verified by using blended inks of N-vinyl-2-pyrrolidinone (NVP) and acrylic acid (AA) via experimental and molecular dynamic simulation. Oil palm occupies the top position of plantation species in southeastern Asian forests. Palm oil (PO) has the lowest price compared with other plant oils. Thus, a PO-based vinyl monomer was selected as the raw material for 3D printing thermoplastic polymers. Various biobased thermoplastics were successfully printed from the PO-based monomer and commercial monomers. The amide structure in the PO monomer formed H-bonds with polar monomers, including NVP and AA, resulting in printed 3D objects with surprising functionalities such as high stretchability and self-healing ability.
Collapse
Affiliation(s)
- Yuchao Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P. R. China
| | - Mingen Fei
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P. R. China
| | - Tingting Chen
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P. R. China
| | - Chao Li
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P. R. China
| | - Shuyi Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P. R. China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P. R. China
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P. R. China
| | - Wendi Liu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P. R. China
| |
Collapse
|
24
|
Duan XY, Lu SR, Yan GQ, Qiu R, Liu MW. Diagnosis and treatment of two patients with novel coronavirus pneumonia combined with acute stress disorder. J BIOL REG HOMEOS AG 2021; 34:2305-2310. [PMID: 33300751 DOI: 10.23812/20-562-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- X Y Duan
- Department of Tuberculosis Diseases, Changpo Hospital of Third People's Hospital of Kunming City, Taiping Town, Anning City, China
| | - S R Lu
- Department of Respiratory and Critical Care, Third People's Hospital of Kunming City, Guandu District, Kunming, China
| | - G Q Yan
- Department of Science and Education, First Affiliated Hospital of Kunming Medical University, Wuhua District, Kunming, China
| | - R Qiu
- Department of Respiratory and Critical Care, Suining Central Hospital, Chuanshan District, Suining, China
| | - M W Liu
- Department of Emergency Medicine, First Affiliated Hospital of Kunming Medical University, Wuhua District, Kunming, China
| |
Collapse
|
25
|
Xu B, Sun T, Zhang Q, Zhang P, Yuan Z, Jiang Z, Wang X, Cui S, Teng Y, Hu XC, Yang J, Pan H, Tong Z, Li H, Yao Q, Wang Y, Yin Y, Sun P, Zheng H, Cheng J, Lu J, Zhang B, Geng C, Liu J, Shen K, Yu S, Li H, Tang L, Qiu R. Efficacy of utidelone plus capecitabine versus capecitabine for heavily pretreated, anthracycline- and taxane-refractory metastatic breast cancer: final analysis of overall survival in a phase III randomised controlled trial. Ann Oncol 2020; 32:218-228. [PMID: 33188874 DOI: 10.1016/j.annonc.2020.10.600] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/29/2020] [Accepted: 10/31/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Primary analysis of the phase III trial BG01-1323L demonstrated that utidelone plus capecitabine significantly improved progression-free survival (PFS) and overall response rate (ORR) versus capecitabine alone in heavily-pretreated patients with metastatic breast cancer (MBC). Here, we report the final overall survival (OS) analysis and updates of other endpoints. PATIENTS AND METHODS In total, 405 patients were randomised 2:1 to receive utidelone (30 mg/m2 IV daily, days 1-5, over 90 min) plus capecitabine (1000 mg/m2 orally b.i.d., days 1-14) or capecitabine alone (1250 mg/m2 orally b.i.d., days 1-14) every 21 days. The secondary endpoint, OS, was estimated using the Kaplan-Meier product-limit approach at a two-sided alpha level of 0.05 after the prespecified 310 death events had been reached. Exploratory analyses of the primary endpoint, PFS, and the secondary endpoint, ORR, were also done. Safety was analysed in patients who had at least one dose of study drug. RESULTS At the final OS analysis, the median duration of follow-up was 19.6 months in the utidelone plus capecitabine group and 15.4 months in the capecitabine alone group. In the intention-to-treat population, 313 deaths had occurred at data cut-off, 203 of 270 patients in the combination group and 110 of 135 in the monotherapy group. Median OS in the combination group was 19.8 months compared with 16.0 months in the monotherapy group [hazard ratio (HR) = 0.75, 95% confidence intervals (CI) 0.59-0.94, P = 0.0142]. The updated analysis of PFS and ORR showed that the combination therapy remained superior to monotherapy. Safety results were similar to those previously reported with respect to incidence, severity and specificity. No late-emerging toxicities or new safety concerns occurred. CONCLUSIONS For heavily-pretreated, anthracycline- and taxane-resistant MBC patients, utidelone plus capecitabine significantly improved OS versus capecitabine alone. These results support the use of utidelone plus capecitabine as a novel therapeutic regimen for patients with MBC.
Collapse
Affiliation(s)
- B Xu
- Department of Medical Oncology, National Cancer Centre/National Clinical Research Centre for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; State Key Laboratory of Molecular Oncology, National Cancer Centre/Cancer Hospital, Chinese Academy of Medical Sciences, Beijing, China.
| | - T Sun
- Department of Internal Medicine, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, Shenyang, China
| | - Q Zhang
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, China
| | - P Zhang
- Department of Medical Oncology, National Cancer Centre/National Clinical Research Centre for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Z Yuan
- Department of Medical Oncology, Sun Yat-sen University Cancer Centre, Guangzhou, China
| | - Z Jiang
- Department of Breast Cancer, The Fifth Medical Cent, Chinese PLA General Hospital, Beijing, China
| | - X Wang
- Department of Breast Medical Oncology, Zhejiang Cancer Hospital, Hangzhou, China
| | - S Cui
- Breast Cancer Centre, Henan Cancer Hospital, Zhengzhou, China
| | - Y Teng
- Department of Medical Oncology, The First Hospital of China Medical University, Shenyang, China
| | - X-C Hu
- Department of Medical Oncology, Fudan University Cancer Center, Shanghai, China
| | - J Yang
- Department of Medical Oncology, The PLA General Hospital, Beijing, China
| | - H Pan
- Department of Medical Oncology, Sir Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Z Tong
- Department of Breast Oncology, Tianjin Medical University Cancer Hospital, Tianjin, China
| | - H Li
- Department of Breast Oncology, Peking University Cancer Hospital, Beijing, China
| | - Q Yao
- Department of Medical Oncology, Nankai University Tianjing People's Hospital, Tianjing, China
| | - Y Wang
- Breast Cancer Center, Shandong Cancer Hospital Affiliated to Shandong University, Jinan, China
| | - Y Yin
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - P Sun
- Department of Oncology, Qingdao University Yantai Yuhuangding Hospital, Yantai, China
| | - H Zheng
- Department of Medical Oncology, Sichuan University West China Hospital, Chengdu, China
| | - J Cheng
- Department of Oncology, Tongji Medical College Wuhan Union Hospital, Wuhan, China
| | - J Lu
- Department of Breast Surgery, Shanghai Jiaotong University Renji Hospital, Shanghai, China
| | - B Zhang
- Department of Medical Oncology, Nantong Tumor Hospital, Nantong, China
| | - C Geng
- Department of Breast Oncology, Hebei Medical University Tumor Hospital, Shijiazhuang, China
| | - J Liu
- Department of Medical Oncology, Fujian Medical University Cancer Hospital, Fuzhou, China
| | - K Shen
- Comprehensive Breast Health Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - S Yu
- Cancer Center, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - H Li
- Department of Breast Surgery, Sichuan Cancer Hospital, Chengdu, China
| | - L Tang
- Department of Research and Development, Beijing Biostar Technologies, Beijing, China
| | - R Qiu
- Department of Research and Development, Beijing Biostar Technologies, Beijing, China
| |
Collapse
|
26
|
Hu Y, Wang Y, Qi Z, He M, Qiu R, Zhu S. Pattern of Recurrence of pT1-3N0M0 Esophageal Squamous Cell Carcinoma After Radical Two-Field Resection. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1907] [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: 10/23/2022]
|
27
|
Kim CH, Yeom YS, Petoussi-Henss N, Zankl M, Bolch WE, Lee C, Choi C, Nguyen TT, Eckerman K, Kim HS, Han MC, Qiu R, Chung BS, Han H, Shin B. ICRP Publication 145: Adult Mesh-Type Reference Computational Phantoms. Ann ICRP 2020; 49:13-201. [PMID: 33231095 DOI: 10.1177/0146645319893605] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
|
28
|
Li WB, Belchior A, Beuve M, Chen YZ, Di Maria S, Friedland W, Gervais B, Heide B, Hocine N, Ipatov A, Klapproth AP, Li CY, Li JL, Multhoff G, Poignant F, Qiu R, Rabus H, Rudek B, Schuemann J, Stangl S, Testa E, Villagrasa C, Xie WZ, Zhang YB. Intercomparison of dose enhancement ratio and secondary electron spectra for gold nanoparticles irradiated by X-rays calculated using multiple Monte Carlo simulation codes. Phys Med 2020; 69:147-163. [PMID: 31918367 DOI: 10.1016/j.ejmp.2019.12.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 11/29/2019] [Accepted: 12/15/2019] [Indexed: 12/22/2022] Open
Abstract
PURPOSE Targeted radiation therapy has seen an increased interest in the past decade. In vitro and in vivo experiments showed enhanced radiation doses due to gold nanoparticles (GNPs) to tumors in mice and demonstrated a high potential for clinical application. However, finding a functionalized molecular formulation for actively targeting GNPs in tumor cells is challenging. Furthermore, the enhanced energy deposition by secondary electrons around GNPs, particularly by short-ranged Auger electrons is difficult to measure. Computational models, such as Monte Carlo (MC) radiation transport codes, have been used to estimate the physical quantities and effects of GNPs. However, as these codes differ from one to another, the reliability of physical and dosimetric quantities needs to be established at cellular and molecular levels, so that the subsequent biological effects can be assessed quantitatively. METHODS In this work, irradiation of single GNPs of 50 nm and 100 nm diameter by X-ray spectra generated by 50 and 100 peak kilovoltages was simulated for a defined geometry setup, by applying multiple MC codes in the EURADOS framework. RESULTS The mean dose enhancement ratio of the first 10 nm-thick water shell around a 100 nm GNP ranges from 400 for 100 kVp X-rays to 600 for 50 kVp X-rays with large uncertainty factors up to 2.3. CONCLUSIONS It is concluded that the absolute dose enhancement effects have large uncertainties and need an inter-code intercomparison for a high quality assurance; relative properties may be a better measure until more experimental data is available to constrain the models.
Collapse
Affiliation(s)
- W B Li
- Institute of Radiation Medicine, Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Ingolstädter Landstr. 1, 85764 Neuherberg, Germany.
| | - A Belchior
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - M Beuve
- Institut de Physique Nucléaire de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3 UMR 5822, Villeurbanne, France
| | - Y Z Chen
- Department of Engineering Physics, Tsinghua University, Beijing, China
| | - S Di Maria
- Centro de Ciências e Tecnologias Nucleares, Instituto Superior Técnico, Universidade de Lisboa, Estrada Nacional 10, 2695-066 Bobadela LRS, Portugal
| | - W Friedland
- Institute of Radiation Medicine, Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Ingolstädter Landstr. 1, 85764 Neuherberg, Germany
| | - B Gervais
- Normandie University, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, UMR 6252, BP 5133, F-14070 Caen Cedex 05, France
| | - B Heide
- Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - N Hocine
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-Aux-Roses, France
| | - A Ipatov
- Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences, St. Petersburg, Russia
| | - A P Klapproth
- Institute of Radiation Medicine, Helmholtz Zentrum München - German Research Center for Environmental Health (GmbH), Ingolstädter Landstr. 1, 85764 Neuherberg, Germany; TranslaTUM, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - C Y Li
- Department of Engineering Physics, Tsinghua University, Beijing, China; Nuctech Company Limited, Beijing, China
| | - J L Li
- Department of Engineering Physics, Tsinghua University, Beijing, China
| | - G Multhoff
- TranslaTUM, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - F Poignant
- Institut de Physique Nucléaire de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3 UMR 5822, Villeurbanne, France
| | - R Qiu
- Department of Engineering Physics, Tsinghua University, Beijing, China
| | - H Rabus
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany
| | - B Rudek
- Physikalisch-Technische Bundesanstalt, Braunschweig, Germany; Massachusetts General Hospital & Harvard Medical School, Department of Radiation Oncology, Boston, MA, USA
| | - J Schuemann
- Massachusetts General Hospital & Harvard Medical School, Department of Radiation Oncology, Boston, MA, USA
| | - S Stangl
- TranslaTUM, Klinikum rechts der Isar, Technische Universität München, Munich, Germany
| | - E Testa
- Institut de Physique Nucléaire de Lyon, Université de Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3 UMR 5822, Villeurbanne, France
| | - C Villagrasa
- Institut de Radioprotection et de Sûreté Nucléaire, Fontenay-Aux-Roses, France
| | - W Z Xie
- Department of Engineering Physics, Tsinghua University, Beijing, China
| | - Y B Zhang
- Peking University Cancer Hospital, Beijing, China
| |
Collapse
|
29
|
Rajbanshi G, Liang Y, Nong X, Qiu R, Shen H, Chen A. Practitioners' knowledge and acceptance of paediatric dental procedures under general anaesthesia. Eur J Paediatr Dent 2019; 20:290-294. [PMID: 31850771 DOI: 10.23804/ejpd.2019.20.04.06] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
AIM As paediatric treatment under dental general anaesthesia (DGA) in China is a fairly new technique that was first applied at the beginning of the 21st century, the purpose of this study was to explore practitioners' understanding and acceptance of paediatric dental procedures under general anaesthesia (GA). MATERIALS AND METHODS This cross-sectional study was conducted among 300 practitioners at the Hospital of Stomatology, Guangxi Medical University, and Guangxi China. A questionnaire was used to collect information about the practitioners' knowledge and acceptance of DGA, and multiple logistic regression analysis was used to test the relationship between the practitioners' knowledge and their acceptance of DGA. RESULTS The average scores for the practitioners' knowledge of DGA was 4.45 ±1.49. Also, 77.0% of them were willing to refer children for DGA. Practitioners who accepted DGA had higher DGA knowledge scores than those who did not accept it [(4.63 ± 1.38) vs. (3.82 ±1.48), p <0.001]. After controlling for demographic factors, the practitioners' knowledge of DGA was significantly related to their acceptance of DGA (OR=1.47, 95% CI=1.21 -1.79). CONCLUSION Practitioners' knowledge of DGA is a significant indicator for their acceptance of DGA for children.
Collapse
Affiliation(s)
- G Rajbanshi
- College of Stomatology, Guangxi Medical University, Nanning, China, Department of Pediatric Dentistry, Department of Oral and Maxillofacial Surgery, Oral and Maxillofacial Rehabilitation and Reconstruction, Guangxi Clinical Research Center for Craniofacial Deformity, Guangxi Key Laboratory of Oral and Maxillofacial Surgery Disease Treatment, Guangxi, China
| | - Y Liang
- College of Stomatology, Guangxi Medical University, Nanning, China, Department of Pediatric Dentistry, Oral and Maxillofacial Rehabilitation and Reconstruction, Guangxi Clinical Research Center for Craniofacial Deformity, Guangxi Key Laboratory of Oral and Maxillofacial Surgery Disease Treatment, Guangxi, China
| | - X Nong
- College of Stomatology, Guangxi Medical University, Nanning, China - Department of Oral and Maxillofacial Surgery - Oral and Maxillofacial Rehabilitation and Reconstruction, Guangxi Clinical Research Center for Craniofacial Deformity, Guangxi Key Laboratory of Oral and Maxillofacial Surgery Disease Treatment, Guangxi, China
| | - R Qiu
- College of Stomatology, Guangxi Medical University, Nanning, China, Department of Pediatric Dentistry, Oral and Maxillofacial Rehabilitation and Reconstruction, Guangxi Clinical Research Center for Craniofacial Deformity, Guangxi Key Laboratory of Oral and Maxillofacial Surgery Disease Treatment, Guangxi, China
| | - H Shen
- College of Stomatology, Guangxi Medical University, Nanning, China - Department of Anesthesiology
| | - A Chen
- College of Stomatology, Guangxi Medical University, Nanning, China - Department of Oral and Maxillofacial Surgery - Oral and Maxillofacial Rehabilitation and Reconstruction, Guangxi Clinical Research Center for Craniofacial Deformity, Guangxi Key Laboratory of Oral and Maxillofacial Surgery Disease Treatment, Guangxi, China
| |
Collapse
|
30
|
Wu Y, Fei M, Qiu R, Liu W, Qiu J. A Review on Styrene Substitutes in Thermosets and Their Composites. Polymers (Basel) 2019; 11:polym11111815. [PMID: 31694245 PMCID: PMC6918274 DOI: 10.3390/polym11111815] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 10/24/2019] [Accepted: 10/25/2019] [Indexed: 11/16/2022] Open
Abstract
In recent decades, tremendous interest and technological development have been poured into thermosets and their composites. The thermosets and composites with unsaturated double bonds curing system are especially concerned due to their versatility. To further exploit such resins, reactive diluents (RDs) with unsaturated sites are usually incorporated to improve their processability and mechanical properties. Traditional RD, styrene, is a toxic volatile organic compound and one of the anticipated carcinogens warned by the National Institute of Health, USA. Most efforts have been conducted on reducing the usage of styrene in the production of thermosets and their composites, while very few works have systematically summarized these literatures. Herein, recent developments regarding styrene substitutes in thermosets and their composites are reviewed. Potential styrene alternatives, such as vinyl derivatives of benzene and (methyl)acrylates are discussed in details. Emphasis is focused on the strategies on developing novel RD monomers through grafting unsaturated functional groups on renewable feedstocks such as carbohydrates, lignin, and fatty acids. This review also highlights the development and characteristics of RD monomers and their influence on processability and mechanical performance of the resulting thermosets and composites.
Collapse
Affiliation(s)
- Yuchao Wu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China; (Y.W.); (M.F.)
| | - Mingen Fei
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China; (Y.W.); (M.F.)
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China; (Y.W.); (M.F.)
- Correspondence: (R.Q.); (W.L.); Tel.: +86-591-8370-7685 (R.Q. & W.L.)
| | - Wendi Liu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China; (Y.W.); (M.F.)
- Correspondence: (R.Q.); (W.L.); Tel.: +86-591-8370-7685 (R.Q. & W.L.)
| | - Jianhui Qiu
- Department of Mechanical Engineering, Faculty of Systems Science and Technology, Akita Prefectural University, Akita 015-0055, Japan;
| |
Collapse
|
31
|
Wang P, Chen Z, Peng Y, Cao L, Li X, Wang C, Yang H, Peng H, Shi Y, Zhou X, Li T, Feng L, Wu C, Qiu R, Xia K, Tang B, Jiang H. (
CAG
)
n
loci as genetic modifiers of age at onset in patients with spinocerebellar ataxia type 1 from mainland China. Eur J Neurol 2019; 26:1130-1136. [PMID: 30891880 DOI: 10.1111/ene.13954] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 03/11/2019] [Indexed: 02/02/2023]
Affiliation(s)
- P. Wang
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
| | - Z. Chen
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
| | - Y. Peng
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
| | - L. Cao
- Department of Neurology and Institute of Neurology Rui Jin Hospital School of Medicine Shanghai Jiao Tong University ShanghaiChina
| | - X. Li
- Department of Neurology First Affiliated Hospital of Sun Yat‐Sen University GuangzhouChina
| | - C. Wang
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
| | - H. Yang
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
| | - H. Peng
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
| | - Y. Shi
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
| | - X. Zhou
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
| | - T. Li
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
| | - L. Feng
- Department of Neurology First Affiliated Hospital of Sun Yat‐Sen University GuangzhouChina
| | - C. Wu
- Department of Neurology First Affiliated Hospital of Sun Yat‐Sen University GuangzhouChina
| | - R. Qiu
- School of Information Science and Engineering Central South University Changsha Hunan China
| | - K. Xia
- Center for Medical Genetics Central South University Changsha Hunan China
| | - B. Tang
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
- Center for Medical Genetics Central South University Changsha Hunan China
- National Clinical Research Center for Geriatric Diseases Central South University Changsha Hunan China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders Central South University Changsha HunanChina
- Parkinson's Disease Center of Beijing Institute for Brain Disorders BeijingChina
| | - H. Jiang
- Department of Neurology Xiangya Hospital Central South University Changsha HunanChina
- Center for Medical Genetics Central South University Changsha Hunan China
- National Clinical Research Center for Geriatric Diseases Central South University Changsha Hunan China
- Key Laboratory of Hunan Province in Neurodegenerative Disorders Central South University Changsha HunanChina
- Xinjiang Medical University Xinjiang China
| |
Collapse
|
32
|
Gao YH, Wang YX, Li J, He M, Qi Z, Qiu R, Qiao XY. [Impact factor of postoperative prognosis of esophageal cancer patients with stage pT2N0~1M0]. Zhonghua Zhong Liu Za Zhi 2019; 39:683-688. [PMID: 28926898 DOI: 10.3760/cma.j.issn.0253-3766.2017.09.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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 postoperative prognosis and the related factors of patients with stage pT2N0-1M0 of thoracic esophageal carcinoma(EC). Methods: From 2008 to 2011, clinical data of 275 cases with stage pT2N0-1M0 of thoracic EC treated by esophagectomy were enrolled. These cases includ 180 male and 95 female. Among them, 32 cases were upper thoracic EC, 186 cases were middle thoracic EC and 57 cases were lower thoracic EC. Alternatively, 205 cases were stage pN0, 70 cases were stage pN1. 155 cases received esophagectomy alone and 120 cases received esophagectomy and postoperative adjuvant therapy. Results: The end of follow-up time was on September 30th, 2014. The 1-, 3-, 5-year overall survival (OS) rates were 91.6%, 70.2% and 63.7%, respectively. The 1- 3-, 5-year progression-free survival (PFS) rates were 83.9%, 64.0% and 60.0%, respectively. The result of univariate analysis showed that the depth of tumor invasion, pathological type, pN stage and number of metastatic lymph nodes were significantly associated with OS (all of P<0.05). Moreover, the gender, the depth of tumor invasion, pathological type, pN stage and number of metastatic lymph nodes were significantly associated with PFS (all of P<0.05). Cox multivariate analysis showed that the location of primary tumor and pN stage were the independent factors of OS (both P<0.05). The gender, pN stage and postoperative adjuvant therapy were the independent factors of PFS (all of P<0.05). Conclusion: Among the patients with pT2N0~1M0 stage of thoracic EC, patients with upper thoracic EC or pN1 stage have poorer postoperative prognosis compared with others, and postoperative adjuvant treatment is recommended for these patients.
Collapse
Affiliation(s)
- Y H Gao
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China (Currently address: Department of Medical Oncology, the Second Central Hospital of Baoding, Zhuozhou 072750, China)
| | - Y X Wang
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - J Li
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - M He
- Department of Thoracic Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - Z Qi
- Department of Thoracic Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - R Qiu
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - X Y Qiao
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| |
Collapse
|
33
|
Liu W, Qiu J, Fei M, Qiu R, Sakai E, Zhang M. Balancing performance of epoxidized soybean oil (ESO)/poly(lactic acid) composites: Synergistic effects of carbon nanotubes and tannic acid-induced crosslinking of ESO. EXPRESS POLYM LETT 2019. [DOI: 10.3144/expresspolymlett.2019.11] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
34
|
Cao Y, Chen H, Qiu R, Hanna M, Ma E, Hjort M, Zhang A, Lewis RS, Wu JC, Melosh NA. Universal intracellular biomolecule delivery with precise dosage control. Sci Adv 2018; 4:eaat8131. [PMID: 30402539 PMCID: PMC6209385 DOI: 10.1126/sciadv.aat8131] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 10/02/2018] [Indexed: 05/06/2023]
Abstract
Intracellular delivery of mRNA, DNA, and other large macromolecules into cells plays an essential role in an array of biological research and clinical therapies. However, current methods yield a wide variation in the amount of material delivered, as well as limitations on the cell types and cargoes possible. Here, we demonstrate quantitatively controlled delivery into a range of primary cells and cell lines with a tight dosage distribution using a nanostraw-electroporation system (NES). In NES, cells are cultured onto track-etched membranes with protruding nanostraws that connect to the fluidic environment beneath the membrane. The tight cell-nanostraw interface focuses applied electric fields to the cell membrane, enabling low-voltage and nondamaging local poration of the cell membrane. Concurrently, the field electrophoretically injects biomolecular cargoes through the nanostraws and into the cell at the same location. We show that the amount of material delivered is precisely controlled by the applied voltage, delivery duration, and reagent concentration. NES is highly effective even for primary cell types or different cell densities, is largely cargo agnostic, and can simultaneously deliver specific ratios of different molecules. Using a simple cell culture well format, the NES delivers into >100,000 cells within 20 s with >95% cell viability, enabling facile, dosage-controlled intracellular delivery for a wide variety of biological applications.
Collapse
Affiliation(s)
- Y. Cao
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - H. Chen
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - R. Qiu
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - M. Hanna
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - E. Ma
- Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, USA
| | - M. Hjort
- Division of Synchrotron Radiation Research and Nanometer Structure Consortium, Lund University, Lund, Sweden
| | - A. Zhang
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - R. S. Lewis
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - J. C. Wu
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - N. A. Melosh
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| |
Collapse
|
35
|
Kim CH, Yeom YS, Nguyen TT, Han MC, Choi C, Lee H, Han H, Shin B, Lee JK, Kim HS, Zankl M, Petoussi-Henss N, Bolch WE, Lee C, Chung BS, Qiu R, Eckerman K. New mesh-type phantoms and their dosimetric applications, including emergencies. Ann ICRP 2018; 47:45-62. [PMID: 29651869 DOI: 10.1177/0146645318756231] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Committee 2 of the International Commission on Radiological Protection (ICRP) has constructed mesh-type adult reference computational phantoms by converting the voxel-type ICRP Publication 110 adult reference computational phantoms to a high-quality mesh format, and adding those tissues that were below the image resolution of the voxel phantoms and therefore not included in the Publication 110 phantoms. The new mesh phantoms include all the necessary source and target tissues for effective dose calculations, including the 8-40-µm-thick target layers of the alimentary and respiratory tract organs, thereby obviating the need for supplemental organ-specific stylised models (e.g. respiratory airways, alimentary tract organ walls and stem cell layers, lens of the eye, and skin basal layer). To see the impact of the new mesh-type reference phantoms, dose coefficients for some selected external and internal exposures were calculated and compared with the current reference values in ICRP Publications 116 and 133, which were calculated by employing the Publication 110 phantoms and the supplemental stylised models. The new mesh phantoms were also used to calculate dose coefficients for industrial radiography sources near the body, which can be used to estimate the organ doses of the worker who is accidentally exposed by an industrial radiography source; in these calculations, the mesh phantoms were deformed to reflect the size of the worker, and also to evaluate the effect of posture on dose coefficients.
Collapse
Affiliation(s)
- C H Kim
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - Y S Yeom
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - T T Nguyen
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - M C Han
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - C Choi
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - H Lee
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - H Han
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - B Shin
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - J-K Lee
- a Department of Nuclear Engineering, Hanyang University, 04763, 222 Wangsimni-ro, Seongdong-gu, Seoul, Republic of Korea
| | - H S Kim
- b Korea Institute of Radiological & Medical Sciences, Republic of Korea
| | - M Zankl
- c Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt, Germany
| | - N Petoussi-Henss
- c Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt, Germany
| | | | - C Lee
- e National Cancer Institute, USA
| | - B S Chung
- f Ajou University School of Medicine, Republic of Korea
| | - R Qiu
- g Tsinghua University, P.R. China
| | | |
Collapse
|
36
|
Liu W, Qiu J, Zhu L, Fei ME, Qiu R, Sakai E, Ito K, Song G, Tang G. Tannic acid-induced crosslinking of epoxidized soybean oil for toughening poly(lactic acid) via dynamic vulcanization. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.06.021] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
37
|
Liu W, Qiu J, Fei ME, Qiu R, Sakai E. Manufacturing of Thermally Remoldable Blends from Epoxidized Soybean Oil and Poly(lactic acid) via Dynamic Cross-Linking in a Twin-Screw Extruder. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b01189] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Wendi Liu
- Department of Machine Intelligence and Systems Engineering, Faculty of Systems Engineering, Akita Prefectural University, Akita 015-0055, Japan
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P.R. China
| | - Jianhui Qiu
- Department of Machine Intelligence and Systems Engineering, Faculty of Systems Engineering, Akita Prefectural University, Akita 015-0055, Japan
- Advanced Materials Institute, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, P.R. China
| | - Ming-en Fei
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P.R. China
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, P.R. China
| | - Eiichi Sakai
- Department of Machine Intelligence and Systems Engineering, Faculty of Systems Engineering, Akita Prefectural University, Akita 015-0055, Japan
| |
Collapse
|
38
|
Zhou X, Wang C, Ding D, Chen Z, Peng Y, Peng H, Hou X, Wang P, Hou X, Ye W, Li T, Yang H, Qiu R, Xia K, Sequeiros J, Tang B, Jiang H. Analysis of (CAG) n expansion in ATXN1, ATXN2 and ATXN3 in Chinese patients with multiple system atrophy. Sci Rep 2018; 8:3889. [PMID: 29497168 PMCID: PMC5832826 DOI: 10.1038/s41598-018-22290-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 02/20/2018] [Indexed: 01/09/2023] Open
Abstract
Multiple system atrophy (MSA) is a complex and multifactorial neurodegenerative disease, and its pathogenesis remains uncertain. Patients with MSA or spinocerebellar ataxia (SCA) show overlapping clinical phenotypes. Previous studies have reported that intermediate or long CAG expansions in SCA genes have been associated with other neurodegenerative disease. In this study, we screened for the number of CAG repeats in ATXN1, 2 and 3 in 200 patients with MSA and 314 healthy controls to evaluate possible associations between (CAG)n in these three polyQ-related genes and MSA. Our findings indicated that longer repeat lengths in ATXN2 were associated with increased risk for MSA in Chinese individuals. No relationship was observed between CAG repeat length in the three examined genes and age at onset (AO) of MSA.
Collapse
Affiliation(s)
- X Zhou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - C Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - D Ding
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - Z Chen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - Y Peng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - H Peng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - X Hou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - P Wang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - X Hou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - W Ye
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - T Li
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - H Yang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China
| | - R Qiu
- School of Information Science and Engineering, Central South University, Changsha, Hunan, 410083, P. R. China
| | - K Xia
- Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410078, P. R. China
| | - J Sequeiros
- IBMC - Institute for Molecular and Cell Biology, i3S - Instituto de Investigação e Inovação na Saúde; and ICBAS; Univ. Porto, Porto, Portugal
| | - B Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China.,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410078, P. R. China.,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, 410008, P. R. China.,National Clinical Research Center for Geriatric Disorders, Changsha, Hunan, 410078, China
| | - H Jiang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, P. R. China. .,Laboratory of Medical Genetics, Central South University, Changsha, Hunan, 410078, P. R. China. .,Key Laboratory of Hunan Province in Neurodegenerative Disorders, Central South University, Changsha, Hunan, 410008, P. R. China.
| |
Collapse
|
39
|
Liu W, Fei ME, Ban Y, Jia A, Qiu R. Preparation and Evaluation of Green Composites from Microcrystalline Cellulose and a Soybean-Oil Derivative. Polymers (Basel) 2017; 9:E541. [PMID: 30965845 PMCID: PMC6418966 DOI: 10.3390/polym9100541] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [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: 10/11/2017] [Revised: 10/18/2017] [Accepted: 10/19/2017] [Indexed: 11/01/2022] Open
Abstract
The present work aimed at developing fully green composites from renewable materials, i.e., acrylated epoxidized soybean oil (AESO) and microcrystalline cellulose (MCC) by a solution casting method. The reinforcing effect of MCC on AESO resins was optimized by adjusting MCC loading from 20 to 40 wt % in terms of physical, mechanical, and thermal properties as well as water absorption of the resulting MCC/AESO composites. The interaction between MCC and AESO was characterized by Fourier transform infrared (FTIR) analysis, which revealed possible hydrogen bonds between the ⁻OH groups of MCC along with the polar components of AESO including C=O, ⁻OH, and epoxy groups. This was further evidenced by a benign interfacial adhesion between MCC and AESO resins as revealed by scanning electron microscope (SEM) analysis. The incorporation of MCC into AESO resins significantly increased the density, hardness, flexural strength, and flexural modulus of the MCC/AESO composites, indicative of a significant reinforcing effect of MCC on AESO resins. The composite with 30 wt % MCC obtained the highest physical and mechanical properties due to the good dispersion and interfacial interaction between MCC and AESO matrix; the density, hardness, flexural strength, and flexural modulus of the composite were 15.7%, 25.0%, 57.2%, and 129.7% higher than those of pure AESO resin, respectively. However, the water resistance at room temperature and 100 °C of the composites were dramatically decreased due to the inherent hydrophilicity of MCC.
Collapse
Affiliation(s)
- Wendi Liu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| | - Ming-En Fei
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| | - Yang Ban
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| | - Anming Jia
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| | - Renhui Qiu
- College of Transportation and Civil Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, China.
| |
Collapse
|
40
|
Abstract
We study the influence of external pressure on the electronic and magnetic structure of EuMnO3 from first-principles calculations. We find a pressure-induced insulator-metal transition at which the magnetic order changes from A-type antiferromagnetic to ferromagnetic with a strong interplay with Jahn-Teller distortions. In addition, we find that the non-centrosymmetric E *-type antiferromagnetic order can become nearly degenerate with the ferromagnetic ground state in the high-pressure metallic state. This situation can be exploited to promote a magnetically-driven realization of a non-centrosymmetric (ferroelectric-like) metal.
Collapse
Affiliation(s)
- R Qiu
- CNRS, Université de Bordeaux, ICMCB, UPR 9048, F-33600 Pessac, France. Physique Théorique des Matériaux, Université de Liège (B5a), B-4000 Liège, Belgium
| | | | | |
Collapse
|
41
|
Wang YX, Yang Q, He M, Qiu R, Li J, Zhu SC, Qiao XY, Qi Z. [Patterns of recurrence in patients with stage Ⅲ thoracic esophageal squamous cell carcinoma after radical resection]. Zhonghua Zhong Liu Za Zhi 2017; 39:48-55. [PMID: 28104034 DOI: 10.3760/cma.j.issn.0253-3766.2017.01.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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 evaluate the patterns of recurrence and their value on target delineation for postoperative radiotherapy (RT) in patients with stage Ⅲ thoracic esophageal squamous cell carcinoma (ESCC) after esophagectomy. Methods: 395 patients (302 male and 93 female) of stage Ⅲ thoracic ESCC after radical resection were enrolled in this study. Among them, 375 patients were treated with two-field and other 20 with three-field esopahgectomy. 97 patients were treated with surgery alone, 212 with adjuvant postoperative chemotherapy (CT), 56 with radiotherapy (RT) and 30 with CT plus RT. Diagnosis of recurrence was primarily based on CT images, some of which were biopsy confirmed. The location and patterns of tumor recurrence were analyzed. Results: The overall failure rates was 75.7% (299/395). Locoregional recurrence (LR) was found in 48.4% of the patients, distant metastasis (DM) in 16.2%, and LR plus DM in 4.3%. There were 208 patients occurred with LR, 26.9% (56) recurred in supraclavicular/neck (51 in supraclavicular), 69.7% (145) in mediastinum (88.7% in upper-mediastinum), and 19.7% (41) in upper abdomen (38 in para-aortic lymph node). Chi-square test and logistic multivariate regression analysis showed that TNM stage and adjuvant therapy were significantly associated with LR (P<0.05). Postoperative RT reduced LR (mainly LR in mediastinum), but postoperative CT did not decrease LR. Conclusions: The recurrence rate is very high in stage Ⅲ thoracic ESCC patients, LR is the main pattern of failure. TNM stage is one of the most important factors for LR. Postoperative radiotherapy can reduce LR but postoperative chemotherapy does not decrease LR. Upper-mediastinum is the most common site of recurrence, followed by supraclavicular and para-aortic regions; these areas should be considered as the key target of postoperative radiotherapy.
Collapse
Affiliation(s)
- Y X Wang
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - Q Yang
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China (Present affiliation: Department of Radiation Oncology, Handan Central Hospital, Hebei Province, China)
| | - M He
- Department of Thoracic Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - R Qiu
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - J Li
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - S C Zhu
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - X Y Qiao
- Department of Radiation Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| | - Z Qi
- Department of Thoracic Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
| |
Collapse
|
42
|
Wang Y, Gao Y, Li J, Qiu R, Qiao X. EP-1238: Patterns of recurrence in patients of pT2 esophageal squamous cell carcinoma after radical resection. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)31673-0] [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]
|
43
|
Cao WT, He J, Chen GD, Wang C, Qiu R, Chen YM. The association between urinary sodium to potassium ratio and bone density in middle-aged Chinese adults. Osteoporos Int 2017; 28:1077-1086. [PMID: 27896362 DOI: 10.1007/s00198-016-3835-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 11/07/2016] [Indexed: 12/13/2022]
Abstract
UNLABELLED The joint effect of sodium and potassium on bone health remains uncertain. We examined the associations between urinary excretion of sodium, potassium, and their ratio and bone mineral density (BMD), and reported an inverse association between urinary sodium-to-potassium ratio and BMD in women, but not in men. INTRODUCTION Several studies have suggested that a higher sodium or lower potassium intake is associated with poor bone health. However, few studies have examined their joint effects. We examined the associations of urinary excretion of sodium, potassium, and the sodium-to-potassium ratio with BMD in Chinese adults. METHODS This community-based, cross-sectional study included 2202 women and 1063 men (40-75 years) in Guangzhou, China. The BMD of the whole body, lumbar spine, and hip sites were measured by dual-energy x-ray absorptiometry. The concentrations of sodium, potassium, and creatinine of the fasting morning first-void urine sample were measured, and creatinine-adjusted values were then used for further analyses. General information was collected via face-to-face interviews. RESULTS For women, after multivariable adjustment, the urinary sodium-to-potassium ratio was inversely associated with BMD at the whole body, total hip, trochanter, and intertrochanter (all p trend <0.05). The mean BMD differences between extreme quartiles ranged from 1.50 to 2.98 % at these sites (all p < 0.05). Similar, but less significant, associations were observed for urinary sodium/creatinine, for which the only significant difference was found at the trochanter (2.00 %, p = 0.016). We did not find any significant associations of BMD with urinary potassium in women and with urinary sodium/creatinine, potassium/creatinine, or their ratio in men. CONCLUSION Our findings suggest that the urinary sodium-to-potassium ratio, but not individual creatinine-adjusted values of sodium or potassium, is a good predictor of BMD in women, but not in men.
Collapse
Affiliation(s)
- W T Cao
- Department of Medical Statistics and Epidemiology, and Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - J He
- Department of Medical Statistics and Epidemiology, and Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - G D Chen
- Department of Medical Statistics and Epidemiology, and Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - C Wang
- Department of Medical Statistics and Epidemiology, and Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - R Qiu
- Department of Medical Statistics and Epidemiology, and Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Y M Chen
- Department of Medical Statistics and Epidemiology, and Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China.
| |
Collapse
|
44
|
Wang X, Gao F, Yuan G, Shi K, Huang Y, Chen Y, Qiu R, Sun L, Liu J, Hu C, Zhou Y. Ten-year follow-up analysis of chronic hepatitis C patients after getting sustained virological response to pegylated interferon-α and ribavirin therapy. J Viral Hepat 2016; 23:971-976. [PMID: 27453300 DOI: 10.1111/jvh.12574] [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] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 07/07/2016] [Indexed: 01/23/2023]
Abstract
There is little data on the long-term follow-up outcomes of chronic hepatitis C patients achieving sustained virological response (SVR) after treatment with peglylated interferon-α plus ribavirin. We prospectively investigated the overall clinical, biochemical, virological and histological outcomes in a ten-year cohort study of 325 patients with chronic hepatitis C achieving SVR to pegylated interferon-α and ribavirin therapy. Patients underwent consistent clinical, biochemical and virological evaluation every six months, and patients with pretherapy Ishak fibrosis score ≥2 were invited to accept a second liver biopsy at the last follow-up. Liver biopsy specimens were evaluated using Ishak's scoring system. At the end of follow-up, five patients developed decompensated liver cirrhosis. One patient (0.3%) with pretherapy cirrhosis was diagnosed with hepatocellular carcinoma (HCC). A total of 305 patients (94%) had normal serum ALT and AST levels during the entire period of follow-up. Twenty-seven patients (8%) had conclusive evidence of virological relapse. Among the 117 patients with paired pretherapy and long-term follow-up biopsies, 96 (82%) had a decreased fibrosis score. Ninety-nine (79%) had a decrease in combined inflammation score. Thirty-seven (32%) had normal or nearly normal livers on long-term follow-up biopsy. SVR achieved with PEG-IFN-α and RBV combination therapy is durable, while late virological relapse may still occur in some patients. Clinical outcomes for patients who obtain SVR are excellent, although the patients with cirrhosis are still at a low risk of hepatocellular carcinoma.
Collapse
Affiliation(s)
- X Wang
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China.,Department of Infectious Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - F Gao
- Department of Infectious Diseases, Linyi People's Hospital, Linyi, Shandong, China
| | - G Yuan
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - K Shi
- Department of Infectious Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Y Huang
- Department of Infectious Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Y Chen
- Department of Infectious Diseases, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - R Qiu
- Department of Infectious Diseases, The Affiliated Hospital of Putian University, Putian, Fujian, China
| | - L Sun
- Department of Pathology, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - J Liu
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - C Hu
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Y Zhou
- Department of Infectious Diseases, Nanfang Hospital, Southern Medical University, Guangzhou, China
| |
Collapse
|
45
|
Niu D, Zhu F, Qiu R, Niu Q. Exposure to electromagnetic fields aboard high-speed electric multiple unit trains. J BIOL REG HOMEOS AG 2016; 30:727-731. [PMID: 27655489] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
High-speed electric multiple unit (EMU) trains generate high-frequency electric fields, low-frequency magnetic fields, and high-frequency wideband electromagnetic emissions when running. Potential human health concerns arise because the electromagnetic disturbances are transmitted mainly into the car body from windows, and from there to passengers and train staff. The transmission amount and amplitude distribution characteristics that dominate electromagnetic field emission need to be studied, and the exposure level of electromagnetic field emission to humans should be measured. We conducted a series of tests of the on board electromagnetic field distribution on several high-speed railway lines. While results showed that exposure was within permitted levels, the possibility of long-term health effects should be investigated.
Collapse
Affiliation(s)
- D Niu
- Electrical Engineering School, Southwest Jiaotong University, China
| | - F Zhu
- Electrical Engineering School, Southwest Jiaotong University, China
| | - R Qiu
- Electrical Engineering School, Southwest Jiaotong University, China
| | - Q Niu
- Department of Occupational Health, Shanxi Medical University, China
| |
Collapse
|
46
|
Qiu R, Vassil A, Godley A. SU-F-J-107: Online Adaptive VMAT Planning Based On Deformed Dose. Med Phys 2016. [DOI: 10.1118/1.4956015] [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: 11/07/2022] Open
|
47
|
Polidori D, Capuano G, Qiu R. Apparent subadditivity of the efficacy of initial combination treatments for type 2 diabetes is largely explained by the impact of baseline HbA1c on efficacy. Diabetes Obes Metab 2016; 18:348-54. [PMID: 26661906 PMCID: PMC5066661 DOI: 10.1111/dom.12615] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Revised: 11/03/2015] [Accepted: 12/02/2015] [Indexed: 11/30/2022]
Abstract
AIM To explain the subadditive efficacy typically observed with initial combination treatments for type 2 diabetes. METHODS Individual subject data from 1186 patients with type 2 diabetes [mean glycated haemoglobin (HbA1c) = 8.8%] treated with metformin, canagliflozin or canagliflozin + metformin were used. The baseline HbA1c versus ΔHbA1c relationships for monotherapy arms were determined using analysis of covariance and then used to predict efficacy in the combination arms by modelling how applying one treatment lowers the 'effective baseline HbA1c' for a second treatment. The model was further tested using data from several published combination studies. RESULTS The mean ΔHbA1c levels were -1.25, -1.33, -1.37, -1.77 and -1.81% with metformin, canagliflozin 100 mg, canagliflozin 300 mg, canagliflozin 100 mg/metformin and canagliflozin 300 mg/metformin, respectively. Using the monotherapy results, the predicted efficacy for the canagliflozin/metformin arms was within 10% of the observed values using the new model, whereas assuming simple additivity overpredicted efficacy in the combination arms by nearly 50%. For 10 other published initial combination studies, predictions from the new model [mean (standard error) predicted ΔHbA1c = 1.67% (0.14)] were much more consistent with observed values [ΔHbA1c = 1.72% (0.12)] than predictions based on assuming additivity [predicted ΔHbA1c = 2.19% (0.21)]. CONCLUSIONS The less-than-additive efficacy commonly seen with initial combination treatments for type 2 diabetes can be largely explained by the impact of baseline HbA1c on the efficacy of individual treatments. Novel formulas have been developed for predicting the efficacy of combination treatments based on the efficacy of individual treatments and the baseline HbA1c of the target patients.
Collapse
Affiliation(s)
- D Polidori
- Janssen Research & Development, LLC, San Diego, CA, USA
| | - G Capuano
- Janssen Research & Development, LLC, Raritan, NJ, USA
| | - R Qiu
- Janssen Research & Development, LLC, Raritan, NJ, USA
| |
Collapse
|
48
|
Gauer J, LeBlanc S, Hao P, Qiu R, Case B, Sakato M, Hingorani M, Erie D, Weninger K. Single-Molecule FRET to Measure Conformational Dynamics of DNA Mismatch Repair Proteins. Methods Enzymol 2016; 581:285-315. [PMID: 27793283 PMCID: PMC5423442 DOI: 10.1016/bs.mie.2016.08.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Single-molecule FRET measurements have a unique sensitivity to protein conformational dynamics. The FRET signals can either be interpreted quantitatively to provide estimates of absolute distance in a molecule configuration or can be qualitatively interpreted as distinct states, from which quantitative kinetic schemes for conformational transitions can be deduced. Here we describe methods utilizing single-molecule FRET to reveal the conformational dynamics of the proteins responsible for DNA mismatch repair. Experimental details about the proteins, DNA substrates, fluorescent labeling, and data analysis are included. The complementarity of single molecule and ensemble kinetic methods is discussed as well.
Collapse
Affiliation(s)
- J.W. Gauer
- University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - S. LeBlanc
- University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - P. Hao
- North Carolina State University, Raleigh, NC, United States
| | - R. Qiu
- North Carolina State University, Raleigh, NC, United States
| | - B.C. Case
- Wesleyan University, Middletown, CT, United States
| | - M. Sakato
- Wesleyan University, Middletown, CT, United States
| | | | - D.A. Erie
- University of North Carolina at Chapel Hill, Chapel Hill, NC, United States,Corresponding authors: ;
| | - K.R. Weninger
- North Carolina State University, Raleigh, NC, United States,Corresponding authors: ;
| |
Collapse
|
49
|
Li YH, Wang WJ, Xu XJ, Meng YC, Zhang LW, Chen J, Qiu R. Short communication: Changes in fluorescence intensity induced by soybean soluble polysaccharide-milk protein interactions during acidification. J Dairy Sci 2015; 98:8577-80. [PMID: 26476946 DOI: 10.3168/jds.2015-9971] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 06/16/2015] [Accepted: 08/26/2015] [Indexed: 12/16/2023]
Abstract
Interactions between stabilizer and milk protein are believed to influence the stabilizing behavior of the milk system. We investigated changes in fluorescence intensity induced by interactions of soybean soluble polysaccharide (SSPS) and milk protein (Mp) during acidification. The fluorescence intensity (If) of Mp increased as pH decreased from 6.8 to 5.2. Compared with Mp alone, If of SSPS-Mp mixtures increased as the pH decreased from 6.8 to 5.2. We found that the If of the SSPS-Mp mixture decreased in a pH range from 5.2 to 3.6, which indicated a change in the polarity microenvironment around the Trp residues. We also found that the maximum emission wavelength (λmax) shifted from 337 to 330nm as pH decreased from 6.8 to 3.6, in further support of SSPS interacting with the polar portion of Mp during acidification. Furthermore, an excited monomeric molecule (pyrene exciplex) was found as a ground-state pyrene formed and a broad band was shown at about 450nm. The intensity ratio of the first peak to the third peak (I1:I3) of Mp increased slightly, and the ratio of intensity of pyrene exciplex to monomer (Ie:Im) decreased because pyrene molecules were located in a less hydrophobic microenvironment during acidification. However, the ratio of I1:I3 decreased clearly at pH below 5.6 and the ratio of Ie:Im showed the opposite trend in the SSPS-Mp mixture. Changes in intrinsic and exogenous fluorescence intensity confirmed that interactions of SSPS and Mp could change the polarity of the microenvironment and that SSPS probably interacted with the polar portion of Mp. These results could give insight into the behavior of stabilizers in acid milk products.
Collapse
Affiliation(s)
- Y H Li
- College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - W J Wang
- Beingmate Baby & Child Food Co., Ltd., Hangzhou 311106, China
| | - X J Xu
- College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Y C Meng
- College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310018, China.
| | - L W Zhang
- School of Food Science and Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - J Chen
- College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| | - R Qiu
- College of Food Science and Biotechnology Engineering, Zhejiang Gongshang University, Hangzhou 310018, China
| |
Collapse
|
50
|
Zhang D, Wei A, Zhang J, Qiu R. The photocatalytic interaction of Cr(VI) ions and phenol on polymer-modified TiO2 under visible light irradiation. Kinet Catal 2015. [DOI: 10.1134/s0023158415050195] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|