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Zhu M, Luo F. The Accuracy Comparison of Bronchiectasis Severity Index and Faced Score in Patients with Bronchiectasis. D104. PHENOTYPES, PROGNOSTIC TOOLS, AND ADJUNCT THERAPIES IN COUGH, CF AND NON-CF BRONCHIECTASIS 2020. [DOI: 10.1164/ajrccm-conference.2020.201.1_meetingabstracts.a7763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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77
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Zhang XT, Yuan YF, Zhu M, Cai GC, Tong ZW, Yang ZY. 3D porous framework of ZnO nanoparticles assembled from double carbon shells consisting of hard and soft carbon networks for high performance lithium ion batteries. NANOTECHNOLOGY 2020; 31:285402. [PMID: 32209746 DOI: 10.1088/1361-6528/ab8328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Low electronic conductivity and large volume variation result in inferior lithium storage performance of ZnO. To overcome these shortcomings of ZnO, herein ZnO nanoparticles are encapsulated in resorcinol-formaldehyde resin-derived hard carbon and then further assembled into a 3-dimensional mesoporous framework structure using a polyvinyl pyrrolidone-derived soft carbon network. The synthesis methods include the polymerization of resorcinol-formaldehyde resin and a polyvinyl pyrrolidone-boiling method. ZnO@dual carbon has af large specific surface area (153.7 m2 g-1) and high porosity. It exhibits excellent cycling performance and high rate capability. After 350 cycles at 500 mA g-1, the ZnO@dual carbon still delivers a discharge capacity of 701 mAh g-1 while the actual discharge capacity of ZnO reaches 950.9 mAh g-1. At 2 A g-1, ZnO@dual carbon delivers the average discharge capacity of 469.6 mAh g-1. The electrochemical performance of ZnO@dual carbon is remarkably superior to those of ZnO@single carbon, pure carbon and pure ZnO nanoparticles, demonstrating the superiority of the dual carbon-assembly structure. This composite structure greatly improves the structural stability of ZnO, enhances its electron conductivity and overall electron transport capacity; which facilitates electrolyte penetration and Li ion diffusion, leading to improved cycling stability and good rate capability.
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Lian Q, Mokhtar MZ, Lu D, Zhu M, Jacobs J, Foster AB, Thomas AG, Spencer BF, Wu S, Liu C, Hodson NW, Smith B, Alkaltham A, Alkhudhari OM, Watson T, Saunders BR. Using Soft Polymer Template Engineering of Mesoporous TiO 2 Scaffolds to Increase Perovskite Grain Size and Solar Cell Efficiency. ACS APPLIED MATERIALS & INTERFACES 2020; 12:18578-18589. [PMID: 32237709 DOI: 10.1021/acsami.0c02248] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The mesoporous (meso)-TiO2 layer is a key component of high-efficiency perovskite solar cells (PSCs). Herein, pore size controllable meso-TiO2 layers are prepared using spin coating of commercial TiO2 nanoparticle (NP) paste with added soft polymer templates (SPT) followed by removal of the SPT at 500 °C. The SPTs consist of swollen crosslinked polymer colloids (microgels, MGs) or a commercial linear polymer (denoted as LIN). The MGs and LIN were comprised of the same polymer, which was poly(N-isopropylacrylamide) (PNIPAm). Large (L-MG) and small (S-MG) MG SPTs were employed to study the effect of the template size. The SPT approach enabled pore size engineering in one deposition step. The SPT/TiO2 nanoparticle films had pore sizes > 100 nm, whereas the average pore size was 37 nm for the control meso-TiO2 scaffold. The largest pore sizes were obtained using L-MG. SPT engineering increased the perovskite grain size in the same order as the SPT sizes: LIN < S-MG < L-MG and these grain sizes were larger than those obtained using the control. The power conversion efficiencies (PCEs) of the SPT/TiO2 devices were ∼20% higher than that for the control meso-TiO2 device and the PCE of the champion S-MG device was 18.8%. The PCE improvement is due to the increased grain size and more effective light harvesting of the SPT devices. The increased grain size was also responsible for the improved stability of the SPT/TiO2 devices. The SPT method used here is simple, scalable, and versatile and should also apply to other PSCs.
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Zhu Y, Zou Y, Wang S, Du C, Xu B, Zhu M. Three-dimensional evaluation of condylar morphology after closed treatment of unilateral intracapsular condylar fracture in children and adolescents. J Craniomaxillofac Surg 2020; 48:286-292. [DOI: 10.1016/j.jcms.2020.01.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 01/16/2020] [Accepted: 01/25/2020] [Indexed: 10/25/2022] Open
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Xia Z, Wei W, Zhu M, Wu S, Shen X, Li S. Artificial reactor containing polymeric bilayer architectures for the formation of self-controlled tandem catalytic-ability. EXPRESS POLYM LETT 2020. [DOI: 10.3144/expresspolymlett.2020.3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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81
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Wu W, Wu W, Gong CX, Liang Y, Zhu M, Xiong H, Luo XP, Fu JF. [Summary of the 18(th) National Conference on Pediatric Endocrine and Genetic Metabolic Diseases]. ZHONGHUA ER KE ZA ZHI = CHINESE JOURNAL OF PEDIATRICS 2019; 57:982-983. [PMID: 31795572 DOI: 10.3760/cma.j.issn.0578-1310.2019.12.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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82
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Shi F, Sun Y, Wu Y, Zhu M, Feng D, Zhang R, Peng L, Chen C. A novel, rapid and simple method for detecting brucellosis based on rapid vertical flow technology. J Appl Microbiol 2019; 128:794-802. [PMID: 31715073 DOI: 10.1111/jam.14519] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 10/29/2019] [Accepted: 11/11/2019] [Indexed: 12/29/2022]
Abstract
AIMS To prevent the spread of brucellosis, a simple and rapid vertical flow technology (RVFT) for the detection of antibodies targeting brucellosis was developed. METHODS AND RESULTS In this study, Brucella sp. lipopolysaccharide was purified and used to detect brucellosis antibodies. Sheep IgG was used as a negative control. Colloidal gold-labeled recombinant staphylococcus aureus protein A was sprayed on a fibreglass membrane to prepare immunogold pads. Rapid vertical flow technology was used to detect Brucella in 1668 Sheep, 2743 bovine, 674 red deer and 420 human samples. The results indicated that the accuracy of this assay can reach 98%. CONCLUSIONS The established RVFT uses a single multifunctional buffer that can be used to detect antibodies in serum, plasma, whole blood and other biological samples while preserving the advantages of lateral-flow immunoassays. SIGNIFICANCE AND IMPACT OF THE STUDY This technology would be of great use in primary medical units and veterinary stations, and it is of great significance for the control of epidemic diseases.
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Zhao W, Wang P, He W, Tao T, Li H, Li Y, Jiang W, Sun J, Ge X, Chen X, Zheng Y, Wei L, Chen C, Wang Y, Li C, Chen H, Yao B, Tang W, Zhu M. MYPT1 Down-regulation by Lipopolysaccharide-SIAH1/2 E3 Ligase-Ubiquitin-Proteasomal Degradation Contributes to Colonic Obstruction of Hirschsprung Disease. Cell Mol Gastroenterol Hepatol 2019; 9:345-347.e6. [PMID: 31759145 PMCID: PMC6997446 DOI: 10.1016/j.jcmgh.2019.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 11/10/2019] [Accepted: 11/12/2019] [Indexed: 12/13/2022]
Key Words
- anova, analysis of variance
- cir, circular
- d, dilated
- haec, hirschsprung-associated enterocolitis
- hd, hirschsprung disease
- long, longitudinal
- lps, lipopolysaccharide
- n, narrow
- rlc, regulatory light chain
- snp, sodium nitroprusside
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Xu Y, Zhu M. Novel exosomal miR-46146 transfer oxaliplatin chemoresistance in colorectal cancer. Clin Transl Oncol 2019; 22:1105-1116. [DOI: 10.1007/s12094-019-02237-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 10/23/2019] [Indexed: 02/06/2023]
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85
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Li YF, Jiang HY, Li Q, Zhu M, Lyu J, Zhao HY. [Clinical study of apatinib combined with chemotherapy for advanced non-small cell lung cancer with negative driving genes]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 2019; 41:775-781. [PMID: 31648501 DOI: 10.3760/cma.j.issn.0253-3766.2019.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the efficacy and safety of apatinib combined with chemotherapy in the first-line treatment of advanced non-small cell lung cancer (NSCLC) with negative driving genes. Methods: From January 2016 to March 2018, 62 advanced NSCLC patients with negative driving genes diagnosed at Xuzhou Cancer Hospital were randomly divided into study group (30 cases) and control group (32 cases), respectively. The patients in the study group were treated with standard first-line chemotherapy combined with apatinib, while those in control group were treated with chemotherapy alone. Results: The disease control rate (DCR) and objective remission rate (ORR) in the study group were 60.0% and 16.7%, respectively, higher than 46.9% and 9.3% in the control group, but without statistical difference (P>0.05). The median progression-free survival (PFS) of study group and control group were 6.4 months and 4.9 months, respectively (P=0.004), and the median overall survival (OS) were 11.3 months and 9.2 months, respectively (P=0.006). Multivariate survival analysis indicated that treatment regimen (P=0.001) was the independent prognostic factor of PFS, and PS score (P=0.002), clinical stage (P=0.02) and treatment regimen (P<0.001) were the independent prognostic factors of OS. After treatment, the incidence of hypertension and hand-foot syndrome in the study group were 46.7% and 53.3%, respectively, significantly higher than 3.3% and 0 in the control group, respectively (P<0.05). The incidence of grade 3-4 adverse drug reactions (ADRs) in the study group was 26.7% (8/30), mainly including hypertension, hand-foot syndrome and bone marrow suppression. The incidence of grade 3-4 ADRs in the control group was 15.6% (5/32), all of which were bone marrow suppression, without significant difference (P=0.286). There was no difference in serum levels of VEGF and CEA between the two groups before treatment. After treatment, the serum level of VEGF in the study group was (169.3±10.1) pg/ml, lower than (211.8±16.7) pg/ml of the control group (P<0.05). Conclusion: Apatinib combined with first-line chemotherapy for advanced NSCLC patients with negative driving genes is safe and beneficial for survival. This therapeutic strategy can significantly prolong the PFS and OS, and further improvement and application can be considered as a choice in the clinical treatment.
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Yu LL, Zhu M, Huang Y, Zhao YM, Wen JJ, Yang XJ, Wu P. Metformin relieves acute respiratory distress syndrome by reducing miR-138 expression. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2019; 22:5355-5363. [PMID: 30178862 DOI: 10.26355/eurrev_201808_15737] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate whether metformin can relieve acute respiratory distress syndrome (ARDS). Its potential mechanism was also explored. MATERIALS AND METHODS The ARDS model was established by injecting LPS into mice that received metformin in advance and the mice in the control group. Pulmonary edema was detected by W/D ratios (wet-to-dry weight ratios), and the vascular exudation was reflected by the protein content and cell number of alveolar lavage fluid. Meanwhile, MPO (myeloperoxidase) activity assay was performed to analyze the neutrophil aggregation. The expression of inflammatory cytokines, including TNF-α, IL-1β, IL-6, and IL-17, were detected by enzyme-linked immunosorbent assay (ELISA). This series of experiments reflected the alleviation effect of metformin on ARDS. To further study the mechanism, we cultured alveolar macrophages (NR8383) in vitro and treated them with LPS and metformin. Western blot was used to detect the phosphorylation levels of p38, ERK, NF-kB, and SIRT1 expression level. Bioinformatics method was then used to predict the binding of miR-138 to SIRT1. The mRNA and protein expression of SIRT1 was detected in NR8383 cells transfected with miR-138 inhibitor. The dual luciferase gene reporter assay was used to detect the relative luciferase activities of miR-138 and SIRT1. RESULTS Pulmonary edema, vascular exudation, and neutrophil accumulation were observed in the ARDS model mice, and the levels of inflammatory cytokines including TNF-α, IL-1b, IL-6, and IL-17 were significantly increased. After metformin treatment, these pulmonic damage indicators were found to be partially reversed. At the same time, metformin could significantly reduce LPS-induced death. After NR8383 was treated with metformin and LPS, the expression of SIRT1 was higher than that of LPS treatment alone, but the expression of p-p38, p-ERK, and p-NF-κB was significantly decreased. After the addition of metformin in NR8383 after LPS treatment, the expression level of miR-138-5p was significantly decreased, and miR-138-5p was confirmed to target SIRT1 and regulate its expression. CONCLUSIONS Metformin could reduce LPS-induced pulmonic injury and increase expression of inflammatory factors. A possible mechanism might be that metformin-induced low expression of mir-138-5p could target SIRT1 to increase its expression and suppress the MAPK pathway, thus alleviating ARDS.
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Miao J, Di M, Cao Y, Wang L, Xiao W, Zhu M, Chen B, Huang S, Han F, Deng X, Xiang Y, Chua M, Guo X, Zhao C. Long-term results of phase II trial of reduced modified clinical target volume in low-risk nasopharyngeal carcinoma treated with intensity modulated radiotherapy. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz428.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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88
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Wu HG, Liu WS, Zhu M, Li XX. Research and analysis of 74 bloodstream infection cases of Acinetobacter baumannii and drug resistance. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2019; 22:1782-1786. [PMID: 29630127 DOI: 10.26355/eurrev_201803_14597] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE We aimed at investigating the clinical and bacteriological features and drug resistance of bloodstream infection of Acinetobacter baumannii, so as to provide new evidence for treatment of bloodstream infection of Acinetobacter baumannii. PATIENTS AND METHODS Statistical analysis was carried out for the clinical and bacteriological features and drug sensitivity of 74 bloodstream infection cases of Acinetobacter baumannii who were admitted to this hospital between July 2016 and June 2017. RESULTS Among 74 patients, about 72.0% of them were admitted to the ICU and Respiratory Department; the average age of these patients was 63 years old. Among 74 patients, 62 patients stayed in the hospital for over 2 weeks (83.8%), and 35 for over 1 month (47.3%); 72.0% of patients experienced intrusive operation, in which 28.0% of patients dead. The experiment of drug sensitivity showed that tigecycline had the highest sensitivity (100%), sequentially followed by amikacin (over 90.0%) and other anti-bacterial drugs (less than 40.0%). Pan-drug resistance was identified in 42 patients, accounting for 56.8%. Comparison between the pan-drug resistant and non-pan-drug resistant patients showed that in the first two weeks before the positive blood culture, there were statistically significant differences in administration of carbapenem antibiotics and intrusive operation (p<0.05). Among the patients, the lowest resistance to carbapenem antibiotics was 8.16%, while the rate of resistance to other 12 antibiotics was more than 40.00%. Multiple-resistant strain mainly originated from the ICU and the burn center. CONCLUSIONS In patients with bloodstream infection of Acinetobacter baumannii, the pan-drug resistant strains account for a vast majority with a high mortality rate. Age, intrusive operation and length of stay in hospital longer than 2 weeks are the common susceptible factors, while the administration of carbapenem antibiotics and intrusive operations might be the high-risk factors leading to pan-drug resistant cases.
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Wu S, Zhu M, Lu D, Milani AH, Lian Q, Fielding LA, Saunders BR, Derry MJ, Armes SP, Adlam D, Hoyland JA. Self-curing super-stretchable polymer/microgel complex coacervate gels without covalent bond formation. Chem Sci 2019; 10:8832-8839. [PMID: 31803457 PMCID: PMC6849882 DOI: 10.1039/c9sc02555c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 08/02/2019] [Indexed: 12/25/2022] Open
Abstract
Elastic physical gels are highly desirable because they can be conveniently prepared and readily shaped. Unfortunately, many elastic physical gels prepared in water require in situ free-radical polymerization during the gel formation stage. In contrast, complex coacervate gels are physical gels that can be prepared by simply mixing two pre-formed oppositely-charged polyelectrolytes. However, as far as we are aware, highly elastic complex coacervate gels have not yet been reported. Herein, we combine polyanionic microgel particles with a well-known commercially-available cationic polyelectrolyte to prepare polymer/microgel complex coacervate (PMCC) physical gels. This new family of gels requires annealing at only 37 °C and behaves like a covalent gel but does not form covalent bonds. Thermal reconfiguration of the dynamic ionic bonds transforms the shapeable pre-gel into a highly elastic gel that is super-stretchable, adhesive, self-healing, highly swellable and can be further toughened using Ca2+ as an ionic crosslinker. Our PMCC gels have excellent potential for applications as engineering gels and structural biomaterials, as well as for wound healing and water purification.
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Miao J, Di M, Cao Y, Wang L, Xiao W, Zhu M, Chen B, Huang S, Han F, Deng X, Xiang Y, Chua M, Guo X, Zhao C. Long-term results of phase II trial of reduced modified clinical target volume in low-risk nasopharyngeal carcinoma treated with intensity modulated radiotherapy. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz252.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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91
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Li X, Fan L, Zhu M, Jiang H, Bai W, Kang J. Combined intervention of 17β-estradiol and treadmill training ameliorates energy metabolism in skeletal muscle of female ovariectomized mice. Climacteric 2019; 23:192-200. [DOI: 10.1080/13697137.2019.1660639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Remick J, Sabouri P, Zhu M, Kwok Y, Bentzen S, Kaiser A. Simulation of an HDR Prostate Boost with Stereotactic Intensity-Modulated Proton Versus Photon Radiation Therapy: A Dosimetric Comparison Study. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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93
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Li Q, Qiu B, Wang B, Zhang J, Li C, Zhou Y, Qin J, Guo S, Xie W, Hui Z, Liang Y, Guo J, Wang H, Zhu M, Shen W, Duan L, Chen L, Zhang L, Long H, Wang Y, Liu H. Comparable Local Control Rates after Hyper- and Hypo-Fractionated Radiotherapy with IMRT Technique in Small Cell Lung Cancer: The Introduction of Extended LQ and TCP Models. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Huang RJ, Lu Y, Zhu M, Zhu JF, Li YG. Simultaneous non-contrast angiography and intraplaque haemorrhage (SNAP) imaging for cervical artery dissections. Clin Radiol 2019; 74:817.e1-817.e7. [PMID: 31416601 DOI: 10.1016/j.crad.2019.06.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Accepted: 06/26/2019] [Indexed: 11/30/2022]
Abstract
AIM To evaluate the feasibility of high-resolution magnetic resonance imaging (MRI) with a simultaneous non-contrast angiography and intraplaque haemorrhage (SNAP) sequence in identifying cervical artery dissections (CeAD). MATERIALS AND METHODS Fifty-three patients with suspected CeAD underwent the SNAP sequence (including non-contrast magnetic resonance angiography [MRA] and heavy T1-weighting vessel wall images simultaneously in a single scan) and conventional MRI sequences (including three-dimensional [3D] time-of-flight MRA and T1-weighted black-blood imaging [T1W BB]) and cervical vascular ultrasound (CVUS). In diagnosis of CeAD, the diagnostic sensitivity and specificity of SNAP, and the diagnostic coherence between SNAP and conventional sequences and between SNAP and CVUS was analysed. At follow-up, the absolute signal (AS) and signal index (SI) of the intramural haematoma (IMH) between vessel wall images on SNAP and T1W-BB images were compared. The image quality of SNAP was analysed by comparing the signal-to-noise ratio (SNR) between vessel wall images from the SNAP and T1W-BB sequences. RESULTS The SNAP sequence was found to provide good performance in the diagnosis of CeAD (sensitivity 72.2%, specificity 98.2%); good agreement was found between SNAP and conventional sequences (Cohen's κ=0.76, p<0.05); and excellent agreement was found between SNAP and CVUS (Cohen's κ=0.83, p<0.05). There was no significant difference between AS or SI of the IMH of the vessel wall images within the SNAP and T1W-BB sequences during the review. The SNAP sequence had higher SNR of the IMH compared to T1W-BB, T2W-BB, proton-density-weighted volume isotropic turbo-spin-echo acquisition imaging (PD-VISTA) sequences (p<0.05). CONCLUSION The SNAP sequence holds the potential to be preferred choice for screening of patients with a high suspicion of CeAD and for the follow-up of IMH after treatment.
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Zhu M, Lu D, Wu S, Lian Q, Wang W, Lyon LA, Wang W, Bártolo P, Saunders BR. Using green emitting pH-responsive nanogels to report environmental changes within hydrogels: a nanoprobe for versatile sensing. NANOSCALE 2019; 11:11484-11495. [PMID: 31066411 DOI: 10.1039/c9nr00989b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Remotely reporting the local environment within hydrogels using inexpensive laboratory techniques has excellent potential to improve our understanding of the nanometer-scale changes that cause macroscopic swelling or deswelling. Whilst photoluminescence (PL) spectroscopy is a popular method for such studies this approach commonly requires bespoke and time-consuming synthesis to attach fluorophores which may leave toxic residues. A promising and more versatile alternative is to use a pre-formed nanogel probe that contains a donor/acceptor pair and then "dope" that into the gel during gel assembly. Here, we introduce green-emitting methacrylic acid-based nanogel probe particles and use them to report the local environment within four different gels as well as stem cells. As the swelling of the nanogel probe changes within the gels the non-radiative energy transfer efficiency is strongly altered. This efficiency change is sensitively reported using the PL ratiometric intensity from the donor and acceptor. We demonstrate that our new nanoprobes can reversibly report gel swelling changes due to five different environmental stimuli. The latter are divalent cations, gel degradation, pH changes, temperature changes and tensile strain. In the latter case, the nanoprobe rendered a nanocomposite gel mechanochromic. The results not only provide new structural insights for hierarchical natural and synthetic gels, but also demonstrate that our new green-fluorescing nanoprobes provide a viable alternative to custom fluorophore labelling for reporting the internal gel environment and its changes.
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Topp M, Arnason J, Advani R, Brown J, Allan J, Ansell S, O'Brien S, Chavez J, Duell J, Rosenwald A, Charnas R, Ambati S, Adriaens L, Ufkin M, Zhu M, Li J, Gasparini P, Jankovic V, Fiaschi N, Zhang W, Hamon S, Thurston G, Murphy A, Yancopoulos G, Lowy I, Sternberg D, Bannerji R. CLINICAL ACTIVITY OF REGN1979, AN ANTI-CD20 X ANTI-CD3 BISPECIFIC ANTIBODY (AB) IN PATIENTS (PTS) WITH (W/) RELAPSED/REFRACTORY (R/R) B-CELL NON-HODGKIN LYMPHOMA (B-NHL). Hematol Oncol 2019. [DOI: 10.1002/hon.58_2629] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Fan YM, Ding SP, Bao ZJ, Wu LM, Zhen LB, Xia Q, Zhu M. Prognostic factors for treatment success in patients with multidrug-resistant tuberculosis in China. Int J Tuberc Lung Dis 2019; 22:300-305. [PMID: 29471908 DOI: 10.5588/ijtld.17.0183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To examine the clinical outcomes and associated prognostic factors among patients with multidrug-resistant tuberculosis (MDR-TB) in China. METHODS This retrospective study involved 243 patients with MDR-TB. All patients received standard regimens containing para-amino salicylic acid (PAS) and/or cycloserine (CS). The demographic, social and clinical characteristics of patients were recorded and the patients were followed up for 24 months. RESULTS Treatment success was closely associated with young age, non-farming occupations, shorter history or smoking, normal urine results, initial MDR-TB treatment regimen, increased haemoglobin, direct bilirubin, uric acid and thyroid stimulating hormone (TSH) levels, and lower white blood cell, neutrophil and blood platelet counts (all P < 0.05). On multivariable analysis, increased haemoglobin (hazard ratio [HR] 1.019, 95%CI 1.007-1.032, P = 0.002) and TSH levels (HR 1.002, 95%CI 1.006-1.039, P = 0.008), normal urine results (HR 1.541, 95%CI 1.008-2.358, P = 0.046) and initial MDR-TB treatment regimen (HR 2.238, 95%CI 1.090-4.597, P = 0.028) were prognostic factors for treatment success in MDR-TB. CONCLUSIONS Higher haemoglobin and TSH levels, normal urine results and initial MDR-TB treatment regimen might predict successful treatment of MDR-TB.
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Wang X, Ho C, Tsatskis Y, Law J, Zhang Z, Zhu M, Dai C, Wang F, Tan M, Hopyan S, McNeill H, Sun Y. Intracellular manipulation and measurement with multipole magnetic tweezers. Sci Robot 2019; 4:4/28/eaav6180. [DOI: 10.1126/scirobotics.aav6180] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 01/16/2019] [Indexed: 12/15/2022]
Abstract
The capability to directly interrogate intracellular structures inside a single cell for measurement and manipulation is important for understanding subcellular and suborganelle activities, diagnosing diseases, and developing new therapeutic approaches. Compared with measurements of single cells, physical measurement and manipulation of subcellular structures and organelles remain underexplored. To improve intracellular physical measurement and manipulation, we have developed a multipole magnetic tweezers system for micromanipulation involving submicrometer position control and piconewton force control of a submicrometer magnetic bead inside a single cell for measurement in different locations (spatial) and different time points (temporal). The bead was three-dimensionally positioned in the cell using a generalized predictive controller that addresses the control challenge caused by the low bandwidth of visual feedback from high-resolution confocal imaging. The average positioning error was quantified to be 0.4 μm, slightly larger than the Brownian motion–imposed constraint (0.31 μm). The system is also capable of applying a force up to 60 pN with a resolution of 4 pN for a period of time longer than 30 min. The measurement results revealed that significantly higher stiffness exists in the nucleus’ major axis than in the minor axis. This stiffness polarity is likely attributed to the aligned actin filament. We also showed that the nucleus stiffens upon the application of an intracellularly applied force, which can be attributed to the response of structural protein lamin A/C and the intracellular stress fiber actin filaments.
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Yuan Y, Ye L, Zhang D, Chen F, Zhu M, Wang L, Yin S, Cai G, Guo S. NiCo2S4 multi-shelled hollow polyhedrons as high-performance anode materials for lithium-ion batteries. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.01.025] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Lu D, Zhu M, Wang W, Wu S, Saunders BR, Adlam DJ, Hoyland JA, Hofzumahaus C, Schneider S, Landfester K. Do the properties of gels constructed by interlinking triply-responsive microgels follow from those of the building blocks? SOFT MATTER 2019; 15:527-536. [PMID: 30444236 DOI: 10.1039/c8sm01510d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Microgels (MGs) are swellable crosslinked polymer colloids. They can also be used as the only building block to construct nanostructured hydrogels which are denoted as doubly crosslinked microgels (DX MGs). Here, new triply responsive DX MGs comprised of interlinked MGs of oligo(ethylene glycol)methacrylate (OEGMA), 2-(2-methoxyethoxy)ethyl methacrylate (MEO2MA), methacrylic acid (MAA) and a o-nitrobenzyl-based UV photocleavable crosslinker are investigated. The MGs swelled or collapsed in response to temperature and pH changes. These behaviours were rationalised with a generic model using Monte Carlo simulations. The MGs also degraded when UV irradiated due to photocleavage of nPh. DX MGs were assembled from the MGs to give injectable gels that were not cytotoxic to nucleus pulposus cells. Comparison of the responsive properties of the DX MGs and MGs showed that the temperature and pH responses of the former were mostly governed by the latter. However, two key differences were found. Firstly, whilst increasing the crosslinker mol% in the MG building blocks (x) did not change MG particle swelling, the compression modulus (E) and swelling of the DX MG gels were strongly affected by x. The E value for the gels was tuneable using x which is a potentially useful new observation for DX MGs. Secondly, UV irradiation of the DX MGs enhanced gel mechanical photostability in contrast to the behaviour of the MGs. We find that the properties of the DX MGs do not simply follow those of the parent MGs and propose mechanisms to account for the differences. The new family of multi-responsive DX MGs presented in this study have potential application for soft tissue repair as injectable gels or as gel implants which report sterilisation.
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