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Yilmaz G, Meng FL, Lu W, Abed J, Peh CKN, Gao M, Sargent EH, Ho GW. Autonomous atmospheric water seeping MOF matrix. SCIENCE ADVANCES 2020; 6:eabc8605. [PMID: 33067237 PMCID: PMC7567601 DOI: 10.1126/sciadv.abc8605] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 09/04/2020] [Indexed: 05/09/2023]
Abstract
The atmosphere contains an abundance of fresh water, but this resource has yet to be harvested efficiently. To date, passive atmospheric water sorbents have required a desorption step that relies on steady solar irradiation. Since the availability and intensity of solar radiation vary, these limit on-demand desorption and hence the amount of harvestable water. Here, we report a polymer-metal-organic framework that provides simultaneous and uninterrupted sorption and release of atmospheric water. The adaptable nature of the hydro-active polymer, and its hybridization with a metal-organic framework, enables enhanced sorption kinetics, water uptake, and spontaneous water oozing. We demonstrate continuous water delivery for 1440 hours, producing 6 g of fresh water per gram of sorbent at 90% relative humidity (RH) per day without active condensation. This leads to a total liquid delivery efficiency of 95% and an autonomous liquid delivery efficiency of 71%, the record among reported atmospheric water harvesters.
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Cai G, Gao Y, Lu W, Zeng S, Chi J, Jiao X, Li R, Li X, Liu J, Song K, Yu Y, Dai Y, Cui B, Lv W, Kong B, Xie X, Ma D, Gao Q. Ovarian cancer and pretreatment thrombosis-associated indices: Evidence based on multicenter, retrospective, observational study. Gynecol Oncol 2020. [DOI: 10.1016/j.ygyno.2020.05.624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Li W, Zhu L, Ruan ZB, Wang MX, Ren Y, Lu W. Nicotinamide protects chronic hypoxic myocardial cells through regulating mTOR pathway and inducing autophagy. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2020; 23:5503-5511. [PMID: 31298404 DOI: 10.26355/eurrev_201906_18220] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To determine the protective effect of nicotinamide on chronic hypoxic myocardial cells and its underlying mechanism. MATERIALS AND METHODS The H9C2 cell lines were taken as objects of study, and were divided into blank group, hypoxia group and nicotinamide treatment group. The cell viability, apoptosis level, autophagy level and mammalian target of rapamycin (mTOR) pathway activity in each group were detected via Cell Counting Kit-8 (CCK8) assay, Hoechst staining, immunofluorescence staining, Polymerase Chain Reaction (PCR) and Western blotting, respectively. RESULTS Nicotinamide could protect the viability of normoxic and chronic hypoxic myocardial cells. Besides, it could also inhibit the expression of caspase3 messenger ribonucleic acid (mRNA) in chronic hypoxic myocardial cells, and reduce the expression of apoptosis-related proteins. Furthermore, it could induce the mRNA expression of autophagy-associated gene 5 (ATG5) and increase the expression of autophagy-related proteins. Further study on the mechanism of nicotinamide showed that nicotinamide could inhibit the activity of the mTOR pathway, thus regulating the autophagy. CONCLUSIONS Nicotinamide induces the autophagy of chronic hypoxic myocardial cells by regulating the mTOR pathway, thereby protecting cells from apoptosis.
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Wan Y, Andriyash IA, Lu W, Mori WB, Malka V. Effects of the Transverse Instability and Wave Breaking on the Laser-Driven Thin Foil Acceleration. PHYSICAL REVIEW LETTERS 2020; 125:104801. [PMID: 32955303 DOI: 10.1103/physrevlett.125.104801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/28/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Acceleration of ultrathin foils by the laser radiation pressure promises a compact alternative to the conventional ion sources. Among the challenges on the way to practical realization, one fundamental is a strong transverse plasma instability, which develops density perturbations and breaks the acceleration. In this Letter, we develop a theoretical model supported by three-dimensional numerical simulations to explain the transverse instability growth from noise to wave breaking and its crucial effect on stopping the acceleration. The wave-broken nonlinear mode triggers rapid stochastic heating that finally explodes the target. Possible paths to mitigate this problem for getting efficient ion acceleration are discussed.
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Liu W, Zhou Y, Ma L, Tong H, Lu W, Zhang B, Bai Y, Zhang Y. 1653P Genomic profiling of Chinese sarcoma patients and exploration of biomarkers for immunotherapy: A retrospective analysis of over 600 samples. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Appiah MO, Asante-Badu B, Zhao J, Liu H, Wang J, Lu W. Possible Protective Mechanisms of Coenzyme Q10 Action on Spermatozoa During Cryopreservation or Cooled-Stored Condition. CRYO LETTERS 2020; 41:246-256. [PMID: 33988662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Artificial insemination (AI) with frozen or cooled-stored semen plays a key role in the widespread distribution of germplasm of elite livestock resources and the protection of endangered species. Cryopreservation provides long-term preservation of sperm and also encourages a greater exchange of genetic material between distant populations. However, freezing has some detrimental effects on sperm, including premature induction of acrosome response, reduced sperm motility, reduced viability, and impaired sperm DNA integrity and fertility. The transition of the membrane phase occurs when the sperm cools down, and lipid accumulation damages the micro-domain, thereby impairing membrane functions, leaving a gap between the gel and the liquid membrane region. Coenzyme Q10 (CoQ10) is a vital lipophilic molecule found in all respiratory eukaryotic cells, including spermatozoa. When such a lipophilic antioxidant is added to the sperm, it can directly diffuse into the polyunsaturated lipid chain present in the plasma membrane, thereby affecting the structure and function of the sperm by generating energy and preventing reactive oxygen. Coenzyme Q10 treatment of sperm from various species improves sperm quality during cryopreservation and cooled-stored condition. It is, however, unclear how this antioxidant affects sperm to improve survival during freezing or cooled-stored condition. Thus, this review highlights the potential protective mechanisms of coenzyme Q10 action during the sperm freezing process.
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Li JB, Li LX, Li LB, Guo JW, Hitz D, Lu W, Feng YC, Zhang WH, Zhang XZ, Zhao HY, Sun LT, Zhao HW. Influence of electron cyclotron resonance ion source parameters on high energy electrons. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:083302. [PMID: 32872961 DOI: 10.1063/5.0011403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
In order to diagnose the electron cyclotron resonance (ECR) plasma, a high-efficiency collimation system has been developed at the Institute of Modern Physics, and the bremsstrahlung spectra in the range of 10 keV-300 keV were measured on a third generation superconducting ECR ion source, SECRAL-II, with a CdTe detector. Used as a comparative index of the mean energy of the high energy electron population, the spectral temperature, Ts, is derived through a linear fitting of the spectra in a semi-logarithmic representation. The influences of some main source parameters, such as the neutral gas pressure, extraction voltage, microwave power, and bias disk voltage, on the high energy electrons are systemically investigated.
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Lu W, Qi G, Ding Z, Li X, Qi W, He F. Clinical efficacy of acellular dermal matrix for plastic periodontal and implant surgery: a systematic review. Int J Oral Maxillofac Surg 2020; 49:1057-1066. [DOI: 10.1016/j.ijom.2019.12.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 12/02/2019] [Accepted: 12/12/2019] [Indexed: 11/24/2022]
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84
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Weng C, Xu J, Wang Q, Lu W, Liu Z. Efficacy and safety of duloxetine in osteoarthritis or chronic low back pain: a Systematic review and meta-analysis. Osteoarthritis Cartilage 2020; 28:721-734. [PMID: 32169731 DOI: 10.1016/j.joca.2020.03.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 02/06/2020] [Accepted: 03/02/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To evaluate the efficacy and safety of duloxetine in the treatment of patients with osteoarthritis (OA) or chronic low back pain (CLBP). METHODS Relevant randomized controlled trials (RCTs) were searched in PubMed, Embase, Web of Science, Cochrane Central Register of Controlled Trials, and ClinicalTrials.gov. Included RCTs compared the efficacy and safety of duloxetine vs placebo in the treatment of OA or CLBP. Weighted mean difference (WMD) were calculated for continuous outcomes while risk ratio (RR) were calculated for dichotomous outcomes. RESULTS Nine RCTs were included in our meta-analysis. Duloxetine had significant improvement over placebo in Brief Pain Inventory 24-h average pain [WMD: -0.67; 95% confidence interval (CI):-0.80, -0.53], weekly mean of the 24-h average pain (WMD: -0.65; 95% CI: -0.79, -0.52), Patient's Global Impression of Improvement (WMD: -0.41; 95% CI: -0.49, -0.32), Clinical Global Impression of Severity (WMD: -0.32; 95% CI: -0.38, -0.25), European Quality of Life Questionnaire-5 Dimension (WMD: 0.04; 95% CI: 0.02, 0.07). In addition, duloxetine is associated with more treatment-emergent adverse events (TEAEs) (RR: 1.25; 95% CI: 1.17, 1.33) and discontinuations for adverse events (AEs) (RR: 2.31; 95% CI: 1.81, 2.94). However, there was no statistically significant difference in serious AEs between duloxetine and placebo. CONCLUSION Duloxetine had modest to moderate effects on pain relief, function improvement, mood regulation and improvement in quality of life with mild AEs in the treatment of OA or CLBP. Future RCTs should focus on comparing duloxetine with other oral drugs and assessing the long-term safety of duloxetine.
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85
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Lu P, Liu Q, Zhu LM, Kong W, Ding XY, Zhou Y, Lu W. [Selection of the cutoff value on tuberculin skin test in diagnosing tuberculosis infection: a population-based cross-sectional study in Eastern China]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2020; 41:363-367. [PMID: 32294836 DOI: 10.3760/cma.j.issn.0254-6450.2020.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To confirm the cutoff induration diameter of tuberculin skin test (TST) so as to decrease the false positive of the TST. Methods: Fasting blood glucose test, TST and Quanti FERON-TB (QFT) Gold In-Tube test were administered to recruit participants at the baseline stage. QFT was used as the gold standard to determine the cutoff of the TST test. Results: Overall, 5 405 participants were enrolled in this study, of whom 1 104 (20.4%) were QFT positive. Among all the 5 405 participants that without stratification, diagnostic value reached the highest when the induration diameter was 10.25 mm with sensitivity and specificity as 0.731 and 0.727, respectively. When the participants were divided into groups as nondiabetics, confirmed diabetics, undiagnosed diabetics, the sensitivities and specificities appeared as 0.701, 0.837, 0.824 and 0.805, 0.821, 0.778 with induration diameters as 11.25 mm, 10.25 mm and 11.25 mm, respectively. Conclusions: Findings of this study confirmed that the specificity of tuberculin test could be significantly improved by using 10-12 mm as the cutoff value for diagnosing the latent tuberculosis infection.
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Li H, Wang B, Li Z, Luo H, Wang Y, Zhang C, Jian L, Gao Y, Lu W, Liu M, Zhao X. Effects of rumen-protected folic acid addition in maternal and post-weaning diets on growth performance, total tract digestibility, ruminal fermentation and blood metabolites in lambs. Anim Feed Sci Technol 2020. [DOI: 10.1016/j.anifeedsci.2019.114364] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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87
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Sun L, Zhao HW, Zhao HY, Lu W, Guo JW, Cao Y, Wu Q, Qian C, Yang Y, Fang X, Zhang ZM, Zhang XZ, Guo XH, Liu ZW. Overview of high intensity ion source development in the past 20 years at IMP. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:023310. [PMID: 32113417 DOI: 10.1063/1.5129399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
Ion source development over the last 20 years at the IMP is reviewed. For versatile purposes, several types of ion sources have been involved in the research and development work at the IMP, i.e., the highly charged ECR (Electron Cyclotron Resonance) ion source, intense microwave ion source or the 2.45 GHz intense beam ECR ion source, and laser ion source (LIS). In the development of ECR ion sources, SECRAL (Superconducting ECR ion source with Advanced design in Lanzhou), Lanzhou ECR ion source, and Lanzhou all permanent magnet ECR ion source series have been made, which can cover the operation microwave frequency range of 10-28 GHz. The LIS with an Nd:YAG laser with a maximum output energy of 8 J in 8 ns pulse duration has been developed for very intense short pulse ion beams from solid materials such as C, Ti, Ni, Ag, and so on. Microwave ion sources have been built to produce intense pulsed or direct current beams from several mA to 100 mA for either high intensity accelerators or applications. This paper will give an overview of the high intensity ion source development at the IMP, especially on the recent progress and new results, such as the status of the fourth generation ECR ion source (first fourth generation ECR ion source), the production of recorded highly charged ion beams with SECRAL sources, key technology research studies, and so on.
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Qian C, Sun LT, Jia ZH, Li LB, Ma YM, Fang X, Guo JW, Wang H, Lu W, Zhang XZ, Zhao HW. A new room temperature LECR5 ion source for the SESRI project. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:023313. [PMID: 32113446 DOI: 10.1063/1.5128514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
The Space Environment Simulation and Research Infrastructure project, which uses various ion beams as irradiated materials in life science research, is being built at the Harbin Institute of Technology. A new room temperature electron cyclotron resonance ion source, the Lanzhou Electron Cyclotron Resonance Ion Source No. 5 (LECR5), has been designed and constructed. It is an intense, highly charged, heavy ion beam injector which generates ion beams from H to Bi, typically ∼50 eμA 209Bi32+. The LECR5 is designed to operate at microwave frequencies in the range of 14.5-18 GHz. The typical magnetic parameters are designed based on those optimized for SECRAL, which operates at 18 GHz. This paper presents the LECR5 ion source, its test bench, and the preliminary beam results.
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Guo JW, Sun L, Lu W, Zhang WH, Feng YC, Shen Z, Li LX, Li JB, Zhang XZ, Hitz D, Zhao HW. A new microwave coupling scheme for high intensity highly charged ion beam production by high power 24-28 GHz SECRAL ion source. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:013322. [PMID: 32012624 DOI: 10.1063/1.5131101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 12/31/2019] [Indexed: 06/10/2023]
Abstract
The efficiency of the microwave-plasma coupling is a key issue to enhance the performance of electron cyclotron resonance ion sources (ECRISs) in terms of higher ion beam intensity yield. The coupling properties are affected by the microwave coupling scheme, especially for the high frequency (f > 20 GHz) and high power (P > 5 kW) ECR ion sources. Based on the study of 24 GHz SECRAL ion source performances working at different launching systems, a new microwave coupling scheme, called the Vlasov launcher, is proposed, which can not only realize efficient power matching and feeding but also enhance the microwave power distribution on the ECR surface. The first promising results are presented in this article. Then, a prototype dedicated to the next generation ECRIS is described.
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Fang X, Sun LT, Yuan YJ, Qian C, Yang Y, Lu W, Zhao HW. Emittance study of the high intensity highly charged heavy ion beams extracted from electron cyclotron resonance ion source. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2020; 91:013317. [PMID: 32012582 DOI: 10.1063/1.5128638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 12/26/2019] [Indexed: 06/10/2023]
Abstract
According to the requirements of ion beams extracted from an electron cyclotron resonance ion source transverse phase space coupling research and the afterglow beam property effective measurement, a pepper pot type meter called PEMiL (Pepper Pot Emittance Meter in Lanzhou) has been designed, fabricated, and commissioned to obtain the emittance of high intensity highly charged heavy ion beams. The direct current beam emittance measurement results verify the coupling property caused by the semisolenoid field. This paper also describes the scheme of multiple exposure accumulation which was applied to measure the afterglow beam property, and the transverse phase space distribution of the oxygen afterglow beam which was measured for the first time is presented.
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Zhao Y, Lu W, Liu Y, Wang J, Zhou S, Mao Y, Li G, Deng Y. Efficient total nitrogen removal from wastewater by Paracoccus denitrificans DYTN-1. Lett Appl Microbiol 2019; 70:263-273. [PMID: 31879967 DOI: 10.1111/lam.13268] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 11/26/2019] [Accepted: 12/20/2019] [Indexed: 01/20/2023]
Abstract
Bioaugmentation is an effective treatment method to reduce nitrogenous pollutants from wastewater. A strain of DYTN-1, which could effectively remove TN from sewage, was isolated from the sludge of a wastewater treatment plant and was identified as Paracoccus denitrificans. The TN in wastewater reduced to <20 mg l-1 within 12 h under optimal conditions by free cells of P. denitrificans DYTN-1. To enhance the removal of TN, P. denitrificans DYTN-1 cells were immobilized in sodium alginate (SA) using different divalent metal ions as cross-linking agents. It was found that the immobilized P. denitrificans DYTN-1 cells could reduce the TN concentration from 100 to below 20 mg l-1 within 8 h. After the optimization of an orthogonal experiment, the immobilized P. denitrificans DYTN-1 cells could reduce the TN concentration from 100 mg l-1 to below 20 mg l-1 within 1 h and significantly reduce the fermentation cycle. These findings would provide an economical and effective method for the removal of total nitrogen in wastewater by immobilized cells of P. denitrificans DYTN-1. SIGNIFICANCE AND IMPACT OF THE STUDY: We identified a new Paracoccus denitrificans strain (DYTN-1) for removal of the total nitrogen in wastewater. The total nitrogen could be removed effectively by P. denitrificans DYTN-1 within 12 h in wastewater. Using sodium alginate as the carrier and Ba2+ as cross-linking agent, the immobilized P. denitrificans DYTN-1 cells could improve the removal efficiency of total nitrogen in wastewater and significantly reduce the fermentation cycle. The assay has provided an economical and effective method for the removal of total nitrogen in wastewater by immobilized cell.
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Cheng Y, Lu W, Wu KL. [Severe facial malformation caused by secondary hyperparathyroidism in uremia: report of 4 cases]. ZHONGHUA ER BI YAN HOU TOU JING WAI KE ZA ZHI = CHINESE JOURNAL OF OTORHINOLARYNGOLOGY HEAD AND NECK SURGERY 2019; 54:924-927. [PMID: 31887819 DOI: 10.3760/cma.j.issn.1673-0860.2019.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the etiology, characteristics and prevention of severe facial deformity in patients with uremia entering the dialysis stage. Methods: Four cases with uremia in the dialysis stage who presented with severe facial deformity between October 2011 and November 2018 were reviewed, including 3 males and 1 female. The ages were 31, 15, 51 and 61, respectively. The general information, clinical symptoms, biochemical indicators, relevant imaging indicators, diagnoses, treatments and efficacies of the 4 patients admitted to the First Affiliated Hospital of Anhui Medical University were collected. Results: All the 4 patients appeared obviously shorter, accompanied by a certain degree of decline in self-care ability, multiple bone and joint pain and severe facial deformity. They presented with significantly increased serum levels of alkaline phosphatase, calcium, phosphorus and parathyroid hormone, and parathyroid hormone level>2 500 pg/ml.Ultrasonography and (99)Tc(m) radionuclide scan showed in situ or ectopic hyperplasia of parathyroid tissue. Bone radiography showed local decrease of bone mineral density and cystic changes.After parathyroidectomy, the serum levels of alkaline phosphatase, parathyroid hormone, calciumand phosphorus decreased significantly, while bone pain symptoms and facial deformities gradually improved. Conclusion: Secondary hyperparathyroidism is a serious complication in patients with dialysis and few of patients may have severe facial deformity (Sagliker syndrome) affecting their normal life and social activities. Parathyroidectomy can improve the facial deformity and the quality of life of patients.
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Hu W, Li M, Lu W, Guo S, Li J. Evaluation of MASTDISCS combi Carba plus for the identification of metallo-β-lactamases, KPC and OXA-48 carbapenemase genes in Enterobacteriaceae clinical isolates. Lett Appl Microbiol 2019; 70:42-47. [PMID: 31642085 DOI: 10.1111/lam.13240] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/07/2019] [Accepted: 10/21/2019] [Indexed: 11/30/2022]
Abstract
The increasing frequency of class A KPC enzymes, class B metallo-β-lactamases (MBLs) and class D OXA-48 enzymes in Enterobacteriaceae makes their early identification urgent. A simple commercial MASTDISCS combi Carba plus disc system (MAST-Carba plus) was designed for the identification of MBLs, KPC and OXA-48 carbapenemase genes in Enterobacteriaceae. To validate the MAST-Carba plus, a total of 77 isolates of carbapenemase-producing Enterobacteriaceae (CPE) and 84 isolates of noncarbapenemase-producing Enterobacteriaceae (non-CPE) were selected for differentiation of the genes of Enterobacteriaceae by MAST-Carba plus. Meanwhile, the carbapenemase genes such as blaKPC , blaIMP , blaVIM , blaNDM-1 and blaOXA-48 were detected by PCR (polymerase chain reaction). Thus, when considered on the basis of PCR results, the sensitivity of MAST-Carba plus detection of KPC strains is 82·3%, the specificity is 100·0%, the positive predictive value is 100·0% and the negative predictive value is 92·4%. For MBLs strains, the sensitivity is 100·0%, the specificity is 97·1%, the positive predictive value is 84·6% and the negative predictive value is 100·0%. For OXA-48 strains, the sensitivity is 100·0%, the specificity is 99·4%, the positive predictive value is 80·0% and the negative predictive value is 100·0%. Our findings suggest that MAST-Carba plus is a rapid and promising method for identifying the MBLs, KPC and OXA-48 carbapenemase genes in Enterobacteriaceae, which could be exploited in basic microbiology laboratory to prevent the transmission of CPE. SIGNIFICANCE AND IMPACT OF THE STUDY: Not only detection of carbapenemases but also identification of their genes accurately and rapidly in Enterobacteriaceae is still a major challenge for clinical laboratories in order to prevent the transmission of carbapenemase-producing Enterobacteriaceae (CPE). Therefore, this study aimed to evaluate the performance of a new rapid method (MASTDISCS combi Carba plus) for the identification of metallo-β-lactamases (MBLs), KPC and OXA-48 carbapenemase genes in Enterobacteriaceae clinical isolates.
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Lu W, Zhu L, Ruan ZB, Wang MX, Ren Y, Li W. HOTAIR promotes inflammatory response after acute myocardium infarction by upregulating RAGE. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2019; 22:7423-7430. [PMID: 30468490 DOI: 10.26355/eurrev_201811_16282] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the role of HOTAIR in inflammatory response after acute myocardium infarction (AMI) and to investigate its underlying mechanism. MATERIALS AND METHODS The AMI model was first constructed in rats, and heart tissues were harvested. Expression levels of HOTAIR and receptor of advanced glycation end-products (RAGE) in rat heart were detected by quantitative Real Time-Polymerase Chain Reaction (qRT-PCR). The protein expression level of pEKR in rat heart was detected by Western blot. The levels of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in rats were determined by enzyme-linked immunosorbent assay (ELISA). The hypoxia-induced H9C2 cells were used to construct the MI model in vitro. Meanwhile, the expression levels of HOTAIR and RAGE in H9C2 cells were detected. The levels of TNF-α and IL-6 in the culture medium were determined by ELISA. Rescue experiments were conducted by co-transfecting pcDNA-HOTAIR and si-RAGE in H9C2 cells. Subsequently, the levels of pERK, TNF-α, and IL-6 were detected. RESULTS The mRNA expression levels of HOTAIR and RAGE in the AMI group were significantly higher than those of the control group. Western blot showed remarkably higher protein levels of RAGE and pERK in AMI rats when compared with those of controls. Similarly, results of ELISA indicated that the levels of TNF-α and IL-6 in AMI rats were significantly higher than those of controls. Meanwhile, overexpression of HOTAIR in H9C2 cells remarkably elevated the expression levels of HOTAIR and RAGE. In addition, upregulated pERK, TNF-α, and IL-6 were observed in H9C2 cells overexpressing HOTAIR, which could be reversed by RAGE knockdown. CONCLUSIONS HOTAIR promotes inflammatory response after AMI by upregulating RAGE expression.
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Xu S, Lu W, Mustafa M, Liu Y, Wang H. Presence of diverse nitrate‐dependent anaerobic methane oxidizing archaea in sewage sludge. J Appl Microbiol 2019; 128:775-783. [DOI: 10.1111/jam.14502] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 09/29/2019] [Accepted: 10/23/2019] [Indexed: 01/03/2023]
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Lu W, Wang NF. [Clinical classification and characteristics of alcoholic myocardial injury]. ZHONGHUA YI XUE ZA ZHI 2019; 99:3237-3242. [PMID: 31694119 DOI: 10.3760/cma.j.issn.0376-2491.2019.41.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To explore the clinical classification and characteristics of patients with alcoholic myocardial injury in the early and late stages, and to improve the understanding of early diagnosis of alcoholic myocardial injury. Methods: From December 2016 to December 2018, a total of 102 patients with long-term history of excessive alcohol consumption, cardiovascular symptoms and evidence of myocardial injury who were admitted to the cardiology outpatient clinic of Hangzhou First People's Hospital, the Third People's Hospital of Yuhang, Dajiangdong Hospital, the Second People's Hospital of Fuyang, and the People's Hospital of Linan were enrolled. According to diagnostic criteria of alcoholic cardiomyopathy (ACM), the patients were divided into ACM group (36 cases) and non-ACM group (66 cases). The baseline data, electrocardiogram and echocardiography characteristics of the two groups were recorded and analyzed. Results: There was no significant difference in the baseline between the two groups (P>0.05), including consumption and duration of alcohol. The left ventricular end-diastolic and right ventricular diameters in ACM group were (59±5) mm and (24±4) mm, respectively, which were significantly higher than those in non-ACM group ((51±4)mm, (22±4) mm, P<0.001 and P=0.044) . The left ventricular ejection fraction in ACM group was 41%±4%, which was significantly lower than that of non-ACM group (63%±8%, P<0.001). The incidence of biatrial enlargement in non-ACM group was 57.58%, which was significantly higher than that of ACM group (36.11%, P=0.038). The incidence of atrial fibrillation in non-ACM group was 54.55%, which was significantly higher than that of ACM group (27.78%, P=0.009). The incidence of diastolic heart failure in non-ACM group was significantly higher than that of ACM group (P=0.005). Conclusions: ACM is characterized by ventricular enlargement, decreased ejection fraction and heart failure, while non-ACM may belong to the early stage of alcoholic myocardial injury, characterized by biatrial expansion, atrial fibrillation and diastolic insufficiency. Due to the lack of understanding and no clinical diagnostic criteria, non-ACM is prone to be missed diagnosed and misdiagnosed.
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Zhou Y, Lu W, Zhang Y, Tong H, Liu W, Zhuang R, Guo H. Integrated genomic and transcriptomic analysis revealed mutagenic patterns of dedifferentiated liposarcoma and leiomyosarcoma in Chinese patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz433.006] [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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98
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Wu L, Zhu J, Yin R, Wu X, Lou G, Wang J, Gao Y, Kong B, Lu X, Zhou Q, Wang Y, Chen Y, Lu W, Li W, Cheng Y, Liu J, Ma X, Zhang J. Olaparib maintenance therapy in patients (pts) with a BRCA1 and/or BRCA2 mutation (BRCAm) and newly diagnosed advanced ovarian cancer (OC): SOLO1 China cohort. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz426.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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99
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Lu W, Sun LT, Qian C, Li LB, Guo JW, Huang W, Zhang XZ, Zhao HW. Production of intense uranium beams with inductive heating oven at Institute of Modern Physics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:113318. [PMID: 31779405 DOI: 10.1063/1.5128419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Accepted: 10/26/2019] [Indexed: 06/10/2023]
Abstract
HIAF (High Intensity heavy ion Accelerator Facility) is a new accelerator complex under construction at the Institute of Modern Physics. As the main injector of this project, the high-charge-state ECR ion source needs to provide intense uranium beams, such as 700 eμA of U35+. This requires the performance of metal ovens to be further improved so that the crucible can operate at an ultrahigh temperature for a long time without damage in a high magnetic field (>3 T). In order to meet these requirements, an inductive oven with special thermal shielding and support has been developed in the past two years. The off-line test result has shown that this oven can reach up to 2000 °C with ∼1.2 kW of heating power. After ∼5 days of continuous running on the SECRAL-II platform, the tantalum crucible survived. In this contribution, we will discuss the structure of this inductive oven and analyze the test results as well.
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Lu W, Rades T, Rantanen J, Chan HK, Yang M. Amino acids as stabilizers for spray-dried simvastatin powder for inhalation. Int J Pharm 2019; 572:118724. [PMID: 31678523 DOI: 10.1016/j.ijpharm.2019.118724] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/15/2019] [Accepted: 09/20/2019] [Indexed: 01/15/2023]
Abstract
BACKGROUND The use of amino acids as excipients is a promising approach to improve the physical stability and powder dispersibility of spray-dried powders for inhalation. OBJECTIVES The aim of this study was to investigate the stabilizing effect of different amino acids on spray-dried amorphous powders for inhalation using simvastatin (SV) as a model compound. METHODS Two hydrophobic amino acids (leucine, LEU and tryptophan, TRP), and one hydrophilic amino acid (lysine, LYS) were spray dried from 1% (w/v) solutions with SV at a molar ratio of 1:1 into dry powders for inhalation. Scanning electron microscopy (SEM), X-ray powder diffraction (XRPD), differential scanning calorimetry (DSC) and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) were used to characterize the morphology, solid form and potential intermolecular interactions of the spray-dried powders. X-ray photoelectron spectroscopy (XPS) was used to analyse the chemical composition of the surface of the particles. The physical stability of the dry powders was examined upon storage in controlled conditions. A Next generation impactor (NGI) was applied to assess the in vitro aerosol performance of the powders. RESULTS XRPD and DSC results confirmed that the spray-dried SV-LEU was composed of crystalline LEU and amorphous SV, the spray-dried SV-LYS was co-amorphous, and the spray-dried SV-TRP was an amorphous system with two phases. XPS analyses revealed that the surface of the spray-dried SV-LEU particles were LEU rich, indicating surface-enrichment of LEU in these particles. In contrast, an almost even distribution of TRP and SV at the surface of spray-dried SV-TRP was observed. FTIR results indicated no intermolecular interaction between SV and the amino acids used in the present study. The three spray-dried samples were physically stable after eight months storage in a desiccator (12% RH, ca. 22 °C). Nevertheless, spray-dried SV-LEU exhibited the best storage stability as compared to the other two spray-dried samples when the samples were stored at 60% RH, 25 °C. Both, the spray-dried SV-LEU and SV-TRP exhibited higher fine particle fractions than the spray-dried SV-LYS. CONCLUSION Both the spray-dried SV-LEU and SV-TRP exhibited better aerosol performance and storage stability compared to the spray-dried SV-LYS. Compared to TRP, LEU exhibited better protection of spray-dried amorphous SV from re-crystallization, which could be attributed to the formation of a LEU crystalline shell covering SV upon the spray drying process.
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