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Ji Q, Ma F, Zhang X, Liu Y, Wang P, Li M. Hsa_circ_0005320 affects cell proliferation and the cell cycle via the IGF2BP3/CDK2 axis in bladder cancer. Cell Signal 2024; 119:111154. [PMID: 38565412 DOI: 10.1016/j.cellsig.2024.111154] [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: 12/10/2023] [Revised: 03/16/2024] [Accepted: 03/29/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Circular RNAs (circRNAs), which are covalently closed non-coding RNAs, are frequently dysregulated in cancer. However, their precise role in bladder cancer (BCa) remains largely unknown. METHODS Expression of hsa_circ_0005320 in tissues and cell lines was detected using quantitative real-time PCR. Proliferation and colony forming capacity of BCa cells were assessed using Cell Counting Kit-8, ethynyl-labeled deoxyuridine, and colony formation assays. The cell cycle was analyzed using flow cytometry. Protein expression of insulin-like growth factor II mRNA-binding protein 3 (IGF2BP3) and cyclin dependent kinase 2 (CDK2) was examined using western blots. The binding of RNA and protein was validated using RNA immunoprecipitation. Additionally, xenograft tumor models were established to validate the function of hsa_circ_0005320 in vivo. RESULTS We screened hsa_circ_0005320 from previous high-throughput sequencing and found that it was highly expressed in BCa tissues and associated with tumor differentiation and depth of invasion in BCa patients. Through functional experiments, we demonstrated that hsa_circ_0005320 promoted cell proliferation and regulated the cell cycle. Mechanistically, hsa_circ_0005320 interacted with and upregulated the expression of IGF2BP3, which binds to and enhances the stability of CDK2 mRNA. Furthermore, knockdown of hsa_circ_0005320 resulted in a reduction in tumor burden in vivo. CONCLUSIONS Collectively, these findings highlight the pro-oncogenic role of hsa_circ_0005320 in BCa through the IGF2BP3/CDK2 axis, providing valuable insights into the mechanism of circRNAs in tumor progression.
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Affiliation(s)
- Quansong Ji
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Feilu Ma
- Teaching Center for Basic Medical Experiment of China Medical University, Shen yang, Liaoning, China
| | - Xiling Zhang
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yili Liu
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Ping Wang
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Mingshan Li
- Department of Urology, the Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning, China.
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Bai S, Zhang XD, Zou YQ, Lin YX, Liu ZY, Li KW, Huang P, Yoshida T, Liu YL, Li MS, Zhang W, Wang XJ, Zhang M, Du C. Development of high-efficiency superparamagnetic drug delivery system with MPI imaging capability. Front Bioeng Biotechnol 2024; 12:1382085. [PMID: 38572358 PMCID: PMC10987818 DOI: 10.3389/fbioe.2024.1382085] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 03/11/2024] [Indexed: 04/05/2024] Open
Abstract
In this study, a high-efficiency superparamagnetic drug delivery system was developed for preclinical treatment of bladder cancer in small animals. Two types of nanoparticles with magnetic particle imaging (MPI) capability, i.e., single- and multi-core superparamagnetic iron oxide nanoparticles (SPIONs), were selected and coupled with bladder anti-tumor drugs by a covalent coupling scheme. Owing to the minimal particle size, magnetic field strengths of 270 mT with a gradient of 3.2 T/m and 260 mT with a gradient of 3.7 T/m were found to be necessary to reach an average velocity of 2 mm/s for single- and multi-core SPIONs, respectively. To achieve this, a method of constructing an in vitro magnetic field for drug delivery was developed based on hollow multi-coils arranged coaxially in close rows, and magnetic field simulation was used to study the laws of the influence of the coil structure and parameters on the magnetic field. Using this method, a magnetic drug delivery system of single-core SPIONs was developed for rabbit bladder therapy. The delivery system consisted of three coaxially and equidistantly arranged coils with an inner diameter of Φ50 mm, radial height of 85 mm, and width of 15 mm that were positioned in close proximity to each other. CCK8 experimental results showed that the three types of drug-coupled SPION killed tumor cells effectively. By adjusting the axial and radial positions of the rabbit bladder within the inner hole of the delivery coil structure, the magnetic drugs injected could undergo two-dimensional delivery motions and were delivered and aggregated to the specified target location within 12 s, with an aggregation range of about 5 mm × 5 mm. In addition, the SPION distribution before and after delivery was imaged using a home-made open-bore MPI system that could realistically reflect the physical state. This study contributes to the development of local, rapid, and precise drug delivery and the visualization of this process during cancer therapy, and further research on MPI/delivery synchronization technology is planned for the future.
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Affiliation(s)
- Shi Bai
- Department of Information Engineering, Shenyang University of Technology, Shenyang, China
| | - Xiao-dan Zhang
- Department of Information Engineering, Shenyang University of Technology, Shenyang, China
| | - Yu-qi Zou
- Department of Information Engineering, Shenyang University of Technology, Shenyang, China
| | - Yu-xi Lin
- Department of Information Engineering, Shenyang University of Technology, Shenyang, China
| | - Zhi-yao Liu
- Department of Information Engineering, Shenyang University of Technology, Shenyang, China
| | - Ke-wen Li
- Department of Information Engineering, Shenyang University of Technology, Shenyang, China
| | - Ping Huang
- Department of Information Engineering, Shenyang University of Technology, Shenyang, China
| | - Takashi Yoshida
- Department of Electrical Engineering, Kyushu University, Fukuoka, Japan
| | - Yi-li Liu
- Department of Urology, Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Ming-shan Li
- Department of Urology, Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Wei Zhang
- Department of Oncology, General Hospital of Northern Theater Command, Shenyang, China
| | - Xiao-ju Wang
- Department of Foreign Languages, Liaoning Vocational and Technical College of Economics, Shenyang, China
| | - Min Zhang
- First Affiliated Hospital, China Medical University, Shenyang, China
| | - Cheng Du
- Department of Oncology, General Hospital of Northern Theater Command, Shenyang, China
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Yan S, Li M, Jiang Q, Li M, Hu M, Shi X, Liang P, Yin M, Gao X, Shen J, Zhang L. Self-assembled co-delivery nanoplatform for increasing the broad-spectrum susceptibility of fall armyworm toward insecticides. J Adv Res 2024:S2090-1232(24)00044-4. [PMID: 38286302 DOI: 10.1016/j.jare.2024.01.031] [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: 10/25/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 01/31/2024] Open
Abstract
INTRODUCTION Unscientific application of insecticides has led to severe resistance of pests to almost all classes of insecticides. Enhanced detoxification is the most common mechanism for this kind of resistance. OBJECT Fall armyworm (FAW) has developed insecticide resistance, which is often linked to the overexpression of detoxification genes. Herein, a multicomponent nano-pesticide is designed to increase its broad-spectrum susceptibility toward insecticides. METHOD Regulatory function of nuclear factor erythroid 2-related factor 2 (Nrf2) in detoxification was confirmed using transcriptome sequencing, quantitative real-time PCR and enzyme activity measurement. A star polycation (SPc) was adopted to construct the pesticide/SPc/complex, whose self-assembly mechanism and characterization were examined using isothermal titration calorimetry, dynamic light scattering and transmission electron microscope. The delivery efficiency of SPc-loaded dsRNA was examined in vitro and in vivo using fluorescent tracer technique. A multicomponent nano-pesticide was created through the integration of bacterial expression system and nano-delivery system, and its bioactivity was tested in laboratory and field. RESULTS We confirmed the crucial role of Nrf2 in regulating the detoxification in FAW, and silencing Nrf2 could decrease detoxification gene expression and increase insecticide susceptibility. We then applied the SPc to self-assemble a nanoplatform for delivering Nrf2 double-stranded RNA (dsRNA) and pesticide simultaneously. Nano-sized pesticide/SPc/dsRNA complex exhibited high delivery efficiency in vitro and in vivo. Excitingly, the insecticidal activities of pesticide/SPc/dsNrf2 complexes were remarkably improved with the normalized synergistic ratios of 5.43-6.25 for chlorantraniliprole, 4.45-15.00 for emamectin benzoate, and 6.75-15.00 for spinetoram. Finally, we developed a multicomponent nano-pesticide (pesticide/SPc/dsNrf2 complex) using a bacterial expression system and nano-delivery system. This approach exhibited excellent leaf protection and pest control efficacy. CONCLUSION The integration between the pesticide nanometerization and insecticide susceptibility improvement offers a promising strategy to increase insecticidal activity. Our study provides a revolutionary and universal strategy to increase insecticidal activity and decease application doses.
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Affiliation(s)
- Shuo Yan
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China.
| | - Mingjian Li
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China
| | - Qinhong Jiang
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China
| | - Mingshan Li
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China
| | - Mengfan Hu
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China
| | - Xueyan Shi
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China
| | - Pei Liang
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China
| | - Meizhen Yin
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, 100029 Beijing, PR China
| | - Xiwu Gao
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China
| | - Jie Shen
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China.
| | - Lei Zhang
- College of Plant Protection, China Agricultural University, 100193 Beijing, PR China.
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Feng L, Zhang Y, Liu XM, Liu GF, Liu XD, Li MS, Zhang L, Xu AQ. [Epidemiological characteristics and clinical features of pertussis in Shandong Province from 2007 to 2022]. Zhonghua Yu Fang Yi Xue Za Zhi 2024; 58:33-39. [PMID: 38228547 DOI: 10.3760/cma.j.cn112150-20230426-00325] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Objective: To analyze the epidemiological characteristics and clinical features of pertussis cases reported in Shandong Province of China. Methods: Data on pertussis cases in Shandong Province from 2007 to 2022 were collected from China Information System for Disease Control and Prevention. At the same time, some case information was collected from the database of notifiable pertussis in Shandong Province from 2007 to 2022. The distribution characteristics and clinical features of pertussis were analyzed. A spatial distribution map of pertussis cases in Shandong Province was drawn. Results: A total of 26 122 pertussis cases were reported in Shandong Province during 2007-2022, with an annual incidence rate ranging from 0.11 to 5.77 cases per 100 000 people. Cases occurred throughout the whole year, with a seasonal peak occurring in spring and summer, especially in July and August. In recent years, reported cases were mainly distributed in the central and western regions of Shandong Province, with fewer cases in the eastern region. The hot spots of the disease shifted from Heze and Dezhou City in 2007-2013 to Jinan and Tai'an city in 2014-2022. The age range of onset was from 1 day to 93 years old. The proportion of cases with age≤1 year was the largest (41.81%, 10 922/26 122), and the proportion of cases aged 0-6 months decreased from 32.21% (67/208)-55.67% (157/282) within the period of 2007 to 2013 to 16.78% (883/5 263)-41.97% (444/1 058) within the period of 2014 to 2022, with a statistically significant trend (χ² trend=670.01, P<0.001). There were 13 682 male cases and 12 440 female cases, with a male-female ratio of 1.10∶1. The male-female ratio was 1.45∶1 (806∶556) from 2007 to 2013 and 1.08∶1 (12 876∶11 884) from 2014 to 2022. The proportion of women increased from 42.31% (88/208) in 2007 to 47.84% (2 518/5 263) in 2022, and with a significant trend (χ² trend=22.25, P<0.001). In pertussis cases, the proportions of scattered children, kindergarten children and students were 71.38% (18 645/26 122), 15.13% (3 951/26 122), and 11.60% (3 031/26 122), respectively. The top five clinical symptoms of pertussis cases were paroxysmal spasmodic cough (86.33%, 21 411 cases), flushing (39.61%, 9 824 cases), restless sleep (34.51%, 8 558 cases), fever (30.80%, 7 638 cases), and crowing (27.53%, 6 829 cases). Among 24 802 cases, there were 15 542 cases (62.66%) with a history of immunization against pertussis vaccine. Conclusion: From 2007 to 2022, the incidence rate of pertussis cases in Shandong Province shows an upward trend, with the majority being young children, and the clinical symptoms are relatively typical.
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Affiliation(s)
- L Feng
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - Y Zhang
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - X M Liu
- Infectious Disease Control and Prevention Division, Dongying Center for Disease Control and Prevention, Dongying 257091, China
| | - G F Liu
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - X D Liu
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - M S Li
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - L Zhang
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - A Q Xu
- Academy of Preventive Medicine/Shandong University, Jinan 250014, China
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Sui X, Lv Q, Ke C, Li M, Zhuang M, Yu H, Tan Z. Adaptive Global Power-of-Two Ternary Quantization Algorithm Based on Unfixed Boundary Thresholds. Sensors (Basel) 2023; 24:181. [PMID: 38203043 PMCID: PMC10781396 DOI: 10.3390/s24010181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/16/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024]
Abstract
In the field of edge computing, quantizing convolutional neural networks (CNNs) using extremely low bit widths can significantly alleviate the associated storage and computational burdens in embedded hardware, thereby improving computational efficiency. However, such quantization also presents a challenge related to substantial decreases in detection accuracy. This paper proposes an innovative method, called Adaptive Global Power-of-Two Ternary Quantization Based on Unfixed Boundary Thresholds (APTQ). APTQ achieves adaptive quantization by quantizing each filter into two binary subfilters represented as power-of-two values, thereby addressing the accuracy degradation caused by a lack of expression ability of low-bit-width weight values and the contradiction between fixed quantization boundaries and the uneven actual weight distribution. It effectively reduces the accuracy loss while at the same time presenting strong hardware-friendly characteristics because of the power-of-two quantization. This paper extends the APTQ algorithm to propose the APQ quantization algorithm, which can adapt to arbitrary quantization bit widths. Furthermore, this paper designs dedicated edge deployment convolutional computation modules for the obtained quantized models. Through quantization comparison experiments with multiple commonly used CNN models utilized on the CIFAR10, CIFAR100, and Mini-ImageNet data sets, it is verified that the APTQ and APQ algorithms possess better accuracy performance than most state-of-the-art quantization algorithms and can achieve results with very low accuracy loss in certain CNNs (e.g., the accuracy loss of the APTQ ternary ResNet-56 model on CIFAR10 is 0.13%). The dedicated convolutional computation modules enable the corresponding quantized models to occupy fewer on-chip hardware resources in edge chips, thereby effectively improving computational efficiency. This adaptive CNN quantization method, combined with the power-of-two quantization results, strikes a balance between the quantization accuracy performance and deployment efficiency in embedded hardware. As such, valuable insights for the industrial edge computing domain can be gained.
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Affiliation(s)
- Xuefu Sui
- Aerospace Information Research Institute, Chinese Academy of Sciences, No. 9 Dengzhuang South Road, Haidian District, Beijing 100094, China; (X.S.); (Q.L.); (C.K.); (M.L.); (M.Z.); (H.Y.)
| | - Qunbo Lv
- Aerospace Information Research Institute, Chinese Academy of Sciences, No. 9 Dengzhuang South Road, Haidian District, Beijing 100094, China; (X.S.); (Q.L.); (C.K.); (M.L.); (M.Z.); (H.Y.)
- Department of Key Laboratory of Computational Optical Imagine Technology, Chinese Academy of Sciences, No. 9 Dengzhuang South Road, Haidian District, Beijing 100094, China
| | - Changjun Ke
- Aerospace Information Research Institute, Chinese Academy of Sciences, No. 9 Dengzhuang South Road, Haidian District, Beijing 100094, China; (X.S.); (Q.L.); (C.K.); (M.L.); (M.Z.); (H.Y.)
| | - Mingshan Li
- Aerospace Information Research Institute, Chinese Academy of Sciences, No. 9 Dengzhuang South Road, Haidian District, Beijing 100094, China; (X.S.); (Q.L.); (C.K.); (M.L.); (M.Z.); (H.Y.)
| | - Mingjin Zhuang
- Aerospace Information Research Institute, Chinese Academy of Sciences, No. 9 Dengzhuang South Road, Haidian District, Beijing 100094, China; (X.S.); (Q.L.); (C.K.); (M.L.); (M.Z.); (H.Y.)
| | - Haiyang Yu
- Aerospace Information Research Institute, Chinese Academy of Sciences, No. 9 Dengzhuang South Road, Haidian District, Beijing 100094, China; (X.S.); (Q.L.); (C.K.); (M.L.); (M.Z.); (H.Y.)
| | - Zheng Tan
- Aerospace Information Research Institute, Chinese Academy of Sciences, No. 9 Dengzhuang South Road, Haidian District, Beijing 100094, China; (X.S.); (Q.L.); (C.K.); (M.L.); (M.Z.); (H.Y.)
- Department of Key Laboratory of Computational Optical Imagine Technology, Chinese Academy of Sciences, No. 9 Dengzhuang South Road, Haidian District, Beijing 100094, China
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Peng CY, Li MS, Li YW, Xu C. [Current status and prospects of non-surgical treatment for fecal incontinence]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:1138-1142. [PMID: 38110275 DOI: 10.3760/cma.j.cn441530-20230908-00083] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Fecal incontinence is a refractory disease in colorectal surgery. The main clinical manifestation is that patients cannot control the discharge of gas, solid or liquid feces in the rectum autonomously. It is easy to bring shame to patients and seriously affect their physical and mental health. Reducing the frequency of fecal incontinence, restoring anal sphincter function, and improving patient quality of life are important goals for treating fecal incontinence. With the development of medical technology and the improvement of treatment plans for fecal incontinence, patients with fecal incontinence usually undergo conservative treatment first, and if conservative treatment is ineffective, surgery can be chosen. Non-surgical treatment methods commonly used in clinical practice include biofeedback therapy, magnetic stimulation therapy, pelvic floor muscle training, anal sphincter training, Kegel training, and other rehabilitation treatments. This article discusses the non-surgical treatment methods for fecal incontinence, hoping to provide a choice for clinical treatment of fecal incontinence.
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Affiliation(s)
- C Y Peng
- Graduate School of Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - M S Li
- Department of colorectal surgery, Tianjin Union Medical Center,Tianjin 300121, China
| | - Y W Li
- Department of colorectal surgery, Tianjin Union Medical Center,Tianjin 300121, China
| | - C Xu
- Department of colorectal surgery, Tianjin Union Medical Center,Tianjin 300121, China
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Cui N, Li J, Jiang Z, Long Z, Liu W, Yao H, Li M, Li W, Wang K. Development and validation of 18F-FDG PET/CT radiomics-based nomogram to predict visceral pleural invasion in solid lung adenocarcinoma. Ann Nucl Med 2023; 37:605-617. [PMID: 37598412 DOI: 10.1007/s12149-023-01861-w] [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: 06/12/2023] [Accepted: 08/07/2023] [Indexed: 08/22/2023]
Abstract
OBJECTIVES This study aimed to establish a radiomics model based on 18F-FDG PET/CT images to predict visceral pleural invasion (VPI) of solid lung adenocarcinoma preoperatively. METHODS We retrospectively enrolled 165 solid lung adenocarcinoma patients confirmed by histopathology with 18F-FDG PET/CT images. Patients were divided into training and validation at a ratio of 0.7. To find significant VPI predictors, we collected clinicopathological information and metabolic parameters measured from PET/CT images. Three-dimensional (3D) radiomics features were extracted from each PET and CT volume of interest (VOI). Receiver operating characteristic (ROC) curve was performed to determine the performance of the model. Accuracy, sensitivity, specificity and area under curve (AUC) were calculated. Finally, their performance was evaluated by concordance index (C-index) and decision curve analysis (DCA) in training and validation cohorts. RESULTS 165 patients were divided into training cohort (n = 116) and validation cohort (n = 49). Multivariate analysis showed that histology grade, maximum standardized uptake value (SUVmax), distance from the lesion to the pleura (DLP) and the radiomics features had statistically significant differences between patients with and without VPI (P < 0.05). A nomogram was developed based on the logistic regression method. The accuracy of ROC curve analysis of this model was 75.86% in the training cohort (AUC: 0.867; C-index: 0.867; sensitivity: 0.694; specificity: 0.889) and the accuracy rate in validation cohort was 71.55% (AUC: 0.889; C-index: 0.819; sensitivity: 0.654; specificity: 0.739). CONCLUSIONS A PET/CT-based radiomics model was developed with SUVmax, histology grade, DLP, and radiomics features. It can be easily used for individualized VPI prediction.
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Affiliation(s)
- Nan Cui
- PET-CT/MRI Department, Harbin Medical University, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, Heilongjiang, China
| | - Jiatong Li
- PET-CT/MRI Department, Harbin Medical University, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, Heilongjiang, China
| | - Zhiyun Jiang
- Radiology Department, Harbin Medical University, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, Heilongjiang, China
| | - Zhiping Long
- Department of Epidemiology, School of Public Health, Harbin Medical University, 157 Baojian Road, Harbin, 150081, Heilongjiang, China
| | - Wei Liu
- PET-CT/MRI Department, Harbin Medical University, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, Heilongjiang, China
| | - Hongyang Yao
- PET-CT/MRI Department, Harbin Medical University, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, Heilongjiang, China
| | - Mingshan Li
- PET-CT/MRI Department, Harbin Medical University, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, Heilongjiang, China
| | - Wei Li
- Interventional Vascular Surgery Department, The 4th Affiliated Hospital of Harbin Medical University, Harbin Medical University, 37 Yiyuan Road, Harbin, 150001, Heilongjiang, China
| | - Kezheng Wang
- PET-CT/MRI Department, Harbin Medical University, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin, 150081, Heilongjiang, China.
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Vora LK, Sabri AH, Naser Y, Himawan A, Hutton ARJ, Anjani QK, Volpe-Zanutto F, Mishra D, Li M, Rodgers AM, Paredes AJ, Larrañeta E, Thakur RRS, Donnelly RF. Long-acting microneedle formulations. Adv Drug Deliv Rev 2023; 201:115055. [PMID: 37597586 DOI: 10.1016/j.addr.2023.115055] [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: 05/08/2023] [Revised: 08/09/2023] [Accepted: 08/16/2023] [Indexed: 08/21/2023]
Abstract
The minimally-invasive and painless nature of microneedle (MN) application has enabled the technology to obviate many issues with injectable drug delivery. MNs not only administer therapeutics directly into the dermal and ocular space, but they can also control the release profile of the active compound over a desired period. To enable prolonged delivery of payloads, various MN types have been proposed and evaluated, including dissolving MNs, polymeric MNs loaded or coated with nanoparticles, fast-separable MNs hollow MNs, and hydrogel MNs. These intricate yet intelligent delivery platforms provide an attractive approach to decrease side effects and administration frequency, thus offer the potential to increase patient compliance. In this review, MN formulations that are loaded with various therapeutics for long-acting delivery to address the clinical needs of a myriad of diseases are discussed. We also highlight the design aspects, such as polymer selection and MN geometry, in addition to computational and mathematical modeling of MNs that are necessary to help streamline and develop MNs with high translational value and clinical impact. Finally, up-scale manufacturing and regulatory hurdles along with potential avenues that require further research to bring MN technology to the market are carefully considered. It is hoped that this review will provide insight to formulators and clinicians that the judicious selection of materials in tandem with refined design may offer an elegant approach to achieve sustained delivery of payloads through the simple and painless application of a MN patch.
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Affiliation(s)
- Lalitkumar K Vora
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Akmal H Sabri
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Yara Naser
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Achmad Himawan
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; Department of Pharmaceutical Science and Technology, Faculty of Pharmacy, Universitas Hasanuddin, Makassar 90245, Indonesia
| | - Aaron R J Hutton
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Qonita Kurnia Anjani
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Fabiana Volpe-Zanutto
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Deepakkumar Mishra
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Mingshan Li
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Aoife M Rodgers
- The Wellcome-Wolfson Institute for Experimental Medicine, Queen's University of Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Alejandro J Paredes
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Eneko Larrañeta
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | | | - Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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Wang Y, Li M, Ying J, Shen J, Dou D, Yin M, Whisson SC, Birch PRJ, Yan S, Wang X. High-efficiency green management of potato late blight by a self-assembled multicomponent nano-bioprotectant. Nat Commun 2023; 14:5622. [PMID: 37699893 PMCID: PMC10497615 DOI: 10.1038/s41467-023-41447-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 09/02/2023] [Indexed: 09/14/2023] Open
Abstract
Potato late blight caused by Phytophthora infestans is a devastating disease worldwide. Unlike other plant pathogens, double-stranded RNA (dsRNA) is poorly taken up by P. infestans, which is a key obstacle in using dsRNA for disease control. Here, a self-assembled multicomponent nano-bioprotectant for potato late blight management is designed based on dsRNA and a plant elicitor. Nanotechnology overcomes the dsRNA delivery bottleneck for P. infestans and extends the RNAi protective window. The protective effect of nano-enabled dsRNA against infection arises from a synergistic mechanism that bolsters the stability of dsRNA and optimizes its effective intracellular delivery. Additionally, the nano-enabled elicitor enhances endocytosis and amplifies the systemic defense response of the plants. Co-delivery of dsRNA and an elicitor provides a protective effect via the two aspects of pathogen inhibition and elevated plant defense mechanisms. The multicomponent nano-bioprotectant exhibits superior control efficacy compared to a commercial synthetic pesticide in field conditions. This work proposes an eco-friendly strategy to manage devastating plant diseases and pests.
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Affiliation(s)
- Yuxi Wang
- College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Mingshan Li
- College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Jiahan Ying
- College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Jie Shen
- College of Plant Protection, China Agricultural University, Beijing, 100193, China
| | - Daolong Dou
- College of Plant Protection, China Agricultural University, Beijing, 100193, China
- College of Plant Protection, Academy for Advanced Interdisciplinary Studies, Nanjing Agricultural University, Nanjing, 210095, China
| | - Meizhen Yin
- State Key Laboratory of Chemical Resource Engineering, Beijing Lab of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Stephen C Whisson
- Cell and Molecular Sciences, James Hutton Institute, Errol Road, Invergowrie, Dundee, DD2 5DA, UK
| | - Paul R J Birch
- Cell and Molecular Sciences, James Hutton Institute, Errol Road, Invergowrie, Dundee, DD2 5DA, UK
- Division of Plant Sciences, School of Life Science, University of Dundee (at James Hutton Institute), Invergowrie, Dundee, DD2 5DA, UK
| | - Shuo Yan
- College of Plant Protection, China Agricultural University, Beijing, 100193, China.
| | - Xiaodan Wang
- College of Plant Protection, China Agricultural University, Beijing, 100193, China.
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10
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Zhao J, Yan S, Li M, Sun L, Dong M, Yin M, Shen J, Zhao Z. NPFR regulates the synthesis and metabolism of lipids and glycogen via AMPK: Novel targets for efficient corn borer management. Int J Biol Macromol 2023; 247:125816. [PMID: 37451386 DOI: 10.1016/j.ijbiomac.2023.125816] [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: 04/06/2023] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
RNA biopesticides are regarded as "the third revolution in the history of pesticides" due to their extensive advantages such as precision, high efficiency, green, pollution-free, etc. In the current study, two target genes encoding neuropeptide F receptor (NPFR) and AMP-activated protein kinase (AMPK), which are essential for insect feeding, cellular energy homeostasis and nutrient availability, were selected to design RNA pesticides. We achieved high RNA interference (RNAi) efficiency of npfr via a star polycation nanocarrier-based double-stranded RNA (dsRNA) delivery system. The food consumption of Ostrinia furnacalis is largely suppressed, which leads to a good protective effect on corn leaves. We determined the mechanism of the above genes. NPFR binds to the Gα protein and activates the intracellular second messengers cAMP and Ca2+, which in turn phosphorylate AMPK to regulate the synthesis and metabolism of lipids and glycogen. We then adopted a highly efficient bacteria-based expression system for the production of large amounts of dsRNA segments targeting npfr and ampk simultaneously and subsequently complexed them with nanocarriers to develop a novel dual-target RNA pesticide. Our RNA nanopesticide dramatically inhibits larval feeding, growth and development, and its controlling effect is even better than that of the widely used anti-feedant azadirachtin.
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Affiliation(s)
- Jiajia Zhao
- Department of Entomology and MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Shuo Yan
- Department of Entomology and MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Mingshan Li
- Department of Entomology and MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Lina Sun
- Department of Entomology and MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Min Dong
- Department of Entomology and MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, PR China
| | - Meizhen Yin
- State Key Lab of Chemical Resource Engineering, Beijing Lab of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Jie Shen
- Department of Entomology and MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, PR China.
| | - Zhangwu Zhao
- Department of Entomology and MARA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing 100193, PR China.
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11
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Zhang Z, Jiao CM, Li MS, Kang JQ, Xu C, Li YW, Zhang XP. [Advances in colonic manometry in adults with colonic motility disorders]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:614-617. [PMID: 37583017 DOI: 10.3760/cma.j.cn441530-20220901-00365] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
In recent years, colonic manometry has been gradually introduced into clinical practice. It helps clinicians to gain a better understanding of the physiology and pathophysiology of colonic contractile activity in healthy adults and patients with colonic dysfunction. More and more patterns of colonic motility are being discovered with the help of colonic manometry. However, the clinical significance of these findings still needs to be further investigated. This review enhances our understanding of colonic motility and the current state of development and application of colonic manometry, as well as the limitations, future directions and potential of the technique in assessing the impact of treatment on colonic motility patterns, by analyzing and summarizing the literature related to colonic manometry.
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Affiliation(s)
- Z Zhang
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - C M Jiao
- Department of Reproductive Medicine, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou 450099, China
| | - M S Li
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - J Q Kang
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - C Xu
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - Y W Li
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - X P Zhang
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
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12
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Li H, Anjani QK, McGuckin MB, Himawan A, Li M, Donnelly RF. Development of a HPLC fluorometric method for the quantification of enfuvirtide following in vitro releasing studies on thermosensitive in situ forming gel. Drug Deliv Transl Res 2023:10.1007/s13346-023-01344-5. [PMID: 37120679 DOI: 10.1007/s13346-023-01344-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2023] [Indexed: 05/01/2023]
Abstract
Due to the presence of peptidase and protease in the gastrointestinal tract, peptides are subjected to digestion and inactivation when administrated orally. To avoid degradation and maintain the desired efficacy of peptide drugs, there is a demand to develop transdermal and intradermal delivery systems. This requires efficient and specific analytical methods to separate and quantify the peptide drugs from the formulation and the skin matrix in the early stages of pharmaceutical development. A high-performance liquid chromatography (HPLC) system equipped with a fluorometric detector was used to quantify enfuvirtide, which is the first fusion inhibitor for HIV treatment. The HPLC method was developed and validated according to the ICH Q2(R1) guidelines. The viability of the method was demonstrated during in vitro studies, where samples were analysed following intradermal administration of a thermosensitive in situ forming gel. Compared with previously reported methods, this assay proved efficient, sensitive and accurate, with a detection limit of 0.74 μg/mL and a run time of 9 min, mitigating the use of any internal standards and detergents. The addition of an organic solvent to the samples successfully solved the problem of low recovery caused by the adsorption of the drug to the plastic consumables in the sample treatment process. The amount of enfuvirtide releasing from the in situ gel through skin after 7 hours was 16.25 ± 7.08 μg, which was significantly lower than the reconstituted FUZEON® itself (26.68 ± 10.45 μg), showing a longer release profile. The results may be beneficial as a constructive input for future enfuvirtide quantification within a preclinical setting through in vitro release studies across the skin.
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Affiliation(s)
- Huanhuan Li
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Qonita Kurnia Anjani
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
- Fakultas Farmasi, Universitas Megarezky, Jl. Antang Raya No. 43, Makassar, 90234, Indonesia
| | - Mary B McGuckin
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Achmad Himawan
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
- Department of Pharmaceutical Science and Technology, Faculty of Pharmacy, Universitas Hasanuddin, Makassar, 90245, Indonesia
| | - Mingshan Li
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.
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13
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Liu Z, Song N, Li M, Wang Z, Cao H, Gao T, Yang X. Based on mRNA Sequencing Techniques to Explore the Molecular Mechanism of Buzhong Yiqi Decoction for Autoimmune Thyroiditis. Comb Chem High Throughput Screen 2023:CCHTS-EPUB-131038. [PMID: 37070455 DOI: 10.2174/1386207326666230417120421] [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: 09/02/2022] [Revised: 02/15/2023] [Accepted: 02/22/2023] [Indexed: 04/19/2023]
Abstract
OBJECTIVE Autoimmune diseases (AD) account for a high percentage of the population. One of the most prevalent is autoimmune thyroiditis (AIT). However, the therapeutic effects of Buzhong Yiqi (BZYQ) decoction on AIT have not been studied yet. The majority of the present study was conducted on NOD.H-2h4 mice in an attempt to ascertain the therapeutic effects of BZYQ decoction on AIT. METHODS The 0.05% sodium iodide water (NaI)-induced AIT mice model was established. A total of nine NOD.H-2h4 mice were randomly divided into three groups: the normal group provided with regular water, the model group drinking freely 0.05% NaI, and the treatment group treated with BZYQ decoction (9.56 g/kg) after NaI supplementation (NaI + BZYQ). BZYQ decoction was administered orally once daily for eight weeks. The thyroid histopathology test was used to measure the severity of lymphocytic infiltration. An enzyme-linked immunosorbent assay (ELISA) was used to determine the levels of anti-thyroglobulin antibody (TgAb), interleukin (IL)-1β, IL-6, and IL-17. The Illumina HiSeq X sequencing platform was utilized to analyze the thyroid tissue by mRNA expression profiles. Bioinformatics analysis was used to investigate the biological function of the differentially expressed mRNAs. In addition, the expression of Carbonyl Reductase 1 (CBR1), 6-Pyruvoyltetrahydropterin Synthase (PTS), Major Histocompatibility Complex, Class II (H2-EB1), Interleukin 23 Subunit Alpha (IL-23A), Interleukin 6 Receptor (IL-6RA), and Janus Kinase 1 (JAK1) was measured by quantitative real-time PCR (qRT-PCR). RESULTS The treatment group exhibited significantly lower rates of thyroiditis and lymphocyte infiltration compared to the model group. Serum levels of TgAb, IL-1β, IL-6, and IL-17 were significantly higher in the model group, but they fell dramatically after BZYQ decoction administration. According to our results, 495 genes showed differential expression in the model group compared to the control group. Six hundred twenty-five genes were significantly deregulated in the treatment group compared to the model group. Bioinformatic analysis showed that most mRNAs were associated with immune-inflammatory responses and were involved in multiple signaling pathways, including folate biosynthesis and the Th17 cell differentiation pathway. CBR1, PTS, H2-EB1, IL23A, IL-6RA and JAK1 mRNA participated in folate biosynthesis and the Th17 cell differentiation pathway. The qRT-PCR analysis confirmed that the above mRNAs were regulated in the model group compared to the treatment group Conclusion: The results of this investigation have revealed novel insights into the molecular mechanism of action of BZYQ decoction against AIT. The mechanism may be partially attributed to the regulation of mRNA expression and pathways.
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Affiliation(s)
- Ziyu Liu
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, China
| | - Nan Song
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, China
| | - Mingshan Li
- Department of Urology, Fourth Affiliated Hospital of China Medical University, Shenyang, Liaoning 100032, China
| | - Zhimin Wang
- Department of Endocrinology, Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, China
| | - Huimin Cao
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, China
| | - Tianshu Gao
- Department of Endocrinology, Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, China
| | - Xiao Yang
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 110847, China
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Li M, Sun X, Yin M, Shen J, Yan S. Recent Advances in Nanoparticle-Mediated Co-Delivery System: A Promising Strategy in Medical and Agricultural Field. Int J Mol Sci 2023; 24:ijms24065121. [PMID: 36982200 PMCID: PMC10048901 DOI: 10.3390/ijms24065121] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/05/2023] [Accepted: 03/06/2023] [Indexed: 03/10/2023] Open
Abstract
Drug and gene delivery systems mediated by nanoparticles have been widely studied for life science in the past decade. The application of nano-delivery systems can dramatically improve the stability and delivery efficiency of carried ingredients, overcoming the defects of administration routes in cancer therapy, and possibly maintaining the sustainability of agricultural systems. However, delivery of a drug or gene alone sometimes cannot achieve a satisfactory effect. The nanoparticle-mediated co-delivery system can load multiple drugs and genes simultaneously, and improve the effectiveness of each component, thus amplifying efficacy and exhibiting synergistic effects in cancer therapy and pest management. The co-delivery system has been widely reported in the medical field, and studies on its application in the agricultural field have recently begun to emerge. In this progress report, we summarize recent progress in the preparation and application of drug and gene co-delivery systems and discuss the remaining challenges and future perspectives in the design and fabrication.
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Affiliation(s)
- Mingshan Li
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Xiaowei Sun
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China
| | - Meizhen Yin
- State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing 100029, China
| | - Jie Shen
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China
- Correspondence: (J.S.); (S.Y.)
| | - Shuo Yan
- Department of Plant Biosecurity and MARA Key Laboratory of Surveillance and Management for Plant Quarantine Pests, College of Plant Protection, China Agricultural University, Beijing 100193, China
- Correspondence: (J.S.); (S.Y.)
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15
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Zhang Z, Sun Y, Li MS, Li YW, Yu YJ, Xu C, Chen C, Zhang XP. A duodenal approach for laparoscopic complete mesocolic excision (CME) plus central vascular ligation or extended lymphadenectomy (CVL/D3) in right‑sided colon cancer (with video). Tech Coloproctol 2023; 27:239-240. [PMID: 35969282 DOI: 10.1007/s10151-022-02660-7] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 07/05/2022] [Indexed: 02/07/2023]
Affiliation(s)
- Z Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Y Sun
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - M S Li
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Y W Li
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Y J Yu
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - C Xu
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - C Chen
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - X P Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China.
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16
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Xiang J, Cheng J, Wei L, Li M, Wu J. Functional analysis of the Nep1-like proteins from Plasmopara viticola. Plant Signal Behav 2022; 17:2000791. [PMID: 35152834 PMCID: PMC9176246 DOI: 10.1080/15592324.2021.2000791] [Citation(s) in RCA: 2] [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] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 06/14/2023]
Abstract
Necrosis and ethylene-inducing peptide 1 (Nep1) -like proteins (NLP) are secreted by multiple taxonomically unrelated plant pathogens (bacteria, fungi, and oomycete) and are best known for inducing cell death and immune responses in dicotyledonous plants. A group of putative NLP genes from obligate biotrophic oomycete Plasmopara viticola were predicted by RNA-Seq in our previous study, but their activity has not been established. Therefore, we analyzed the P. viticola NLP (PvNLP) family and identified seven PvNLP genes. They all belong to type 1 NLP genes and form a P. viticola-specific cluster when compared with other pathogen NLP genes. The expression of PvNLPs was induced during early infection process and the expression patterns could be categorized into two groups. Agrobacterium tumefaciens-mediated transient expression assays revealed that only PvNLP7 was cytotoxic and could induce Phytophthora capsici resistance in Nicotiana benthamiana. Functional analysis showed that PvNLP4, PvNLP5, PvNLP7, and PvNLP10 significantly improved disease resistance of Arabidopsis thaliana to Hyaloperonospora arabidopsidis. Moreover, the four genes caused an inhibition of plant growth which is typically associated with enhanced immunity when over-expressed in Arabidopsis. Further research found that PvNLP7 could activate the expression of defense-related genes and its conserved NPP1 domain was critical for cell death- and immunity-inducing activity. This record of NLP genes from P. viticola showed a functional diversification, laying a foundation for further study on pathogenic mechanism of the devastating pathogen.
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Affiliation(s)
- Jiang Xiang
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jianhui Cheng
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Lingzhu Wei
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Mingshan Li
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jiang Wu
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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Omar GJ, Kong WL, Jani H, Li MS, Zhou J, Lim ZS, Prakash S, Zeng SW, Hooda S, Venkatesan T, Feng YP, Pennycook SJ, Shen L, Ariando A. Experimental Evidence of t_{2g} Electron-Gas Rashba Interaction Induced by Asymmetric Orbital Hybridization. Phys Rev Lett 2022; 129:187203. [PMID: 36374676 DOI: 10.1103/physrevlett.129.187203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
We report the control of Rashba spin-orbit interaction by tuning asymmetric hybridization between Ti orbitals at the LaAlO_{3}/SrTiO_{3} interface. This asymmetric orbital hybridization is modulated by introducing a LaFeO_{3} layer between LaAlO_{3} and SrTiO_{3}, which alters the Ti-O lattice polarization and traps interfacial charge carriers, resulting in a large Rashba spin-orbit effect at the interface in the absence of an external bias. This observation is verified through high-resolution electron microscopy, magnetotransport and first-principles calculations. Our results open hitherto unexplored avenues of controlling Rashba interaction to design next-generation spin orbitronics.
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Affiliation(s)
- G J Omar
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - W L Kong
- Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
| | - H Jani
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - M S Li
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575
| | - J Zhou
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - Z S Lim
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - S Prakash
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - S W Zeng
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - S Hooda
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore
| | - T Venkatesan
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore
| | - Y P Feng
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - S J Pennycook
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575
| | - L Shen
- Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
| | - A Ariando
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
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18
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Zheng H, Li MS, Wu D, Yan TT, An ZJ, Li YX. [Interpretation of defeating meningitis by 2030: a global road map]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1348-1352. [PMID: 36207902 DOI: 10.3760/cma.j.cn112150-20220217-00148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Meningitis is a life-threatening disease. In order to reduce its threat to public health, the World Health Assembly indorsed a resolution in 2020 for urgent global action to prevent and control meningitis. Defeating Meningitis by 2030: a Global Roadmap was officially launched by the World Health Organization in 2021. We interpreted some key information of the roadmap from the aspects of coverage, objectives and pillar strategies, providing ideas for further strengthening the prevention and control of bacterial meningitis in China.
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Affiliation(s)
- H Zheng
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - M S Li
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - D Wu
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - T T Yan
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Z J An
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y X Li
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
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19
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Ma Y, Wang C, Shi M, Li M, Li L, Che T, Qu J. Searching for the methylation sites involved in human papillomavirus type 16 and 18‑positive women with cervical cancer. Mol Clin Oncol 2022; 17:149. [PMID: 36157320 PMCID: PMC9468798 DOI: 10.3892/mco.2022.2582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 07/27/2022] [Indexed: 11/06/2022] Open
Abstract
It has been reported that >90% of women with cervical cancer are human papillomavirus (HPV)-positive, with HPV16 and 18 being the most ‘highest-risk’ HPV genotypes. However, in numerous women, HPV infection will not progress to cervical cancer. Accordingly, more appropriate screening markers need to be explored. In the present study, genome-wide DNA methylomic differences between cervical cancer tissues with HPV-16 or HPV-18 infection and normal cervical tissues were detected by using an Illumina Human Methylation 850 K BeadChip. The Gene Ontology functional enrichment and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses were conducted in order to define the nearest neighbouring genes of differentiated methylation sites. Moreover, differentiated methylation sites were verified using pyrosequencing. KEGG analyses suggested that the focal adhesion pathway and pathways in cancer were highly enriched. Bioinformatics and statistical analysis indicated that the nine CpG loci had the most significant differences amongst the genes involved in these pathways. Among these, six CpG sites in the CHRM2, LAMA4, COL11A1, FGF10, IGF1 and TEK genes were highly associated with HPV-16-positive cervical cancer, as validated using pyrophosphate sequencing. Additionally, 10 significantly different CpG sites of the HPV-18-positive group were selected and verified in The Cancer Genome Atlas, indicating their possible diagnostic roles in cervical cancer development and determination. In addition, eight hypermethylated CpG island sites that were associated with HPV-16-positive cervical cancer tissues and 10 hypermethylated CpG island sites that were associated with HPV-18-positive cervical cancer tissues were identified, highlighting their potential roles in screening and evaluating targeted therapy efficacy and prognosis. The main focus of the present study was to identify the genetic variability in HPV-16- and HPV-18-positive samples and to elucidate possible methylation biomarkers in HPV-positive women with a risk of developing cervical cancer.
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Affiliation(s)
- Yanyun Ma
- Clinical Laboratory, The First People's Hospital of Lanzhou, Lanzhou, Gansu 730050, P.R. China
| | - Chunxia Wang
- Clinical Laboratory, The First People's Hospital of Lanzhou, Lanzhou, Gansu 730050, P.R. China
| | - Mengqi Shi
- Department of Cell Biology, School of Biology and Basic of Medical Science, Medical College of Soochow University, P.R. China
| | - Mingshan Li
- Department of Cell Biology, School of Biology and Basic of Medical Science, Medical College of Soochow University, P.R. China
| | - Lin Li
- Laboratory of Precision Medicine and Translational Medicine, Suzhou Science and Technology Town Hospital, Suzhou, Jiangsu 215153, P.R. China
| | - Tuanjie Che
- Laboratory of Precision Medicine and Translational Medicine, Suzhou Science and Technology Town Hospital, Suzhou, Jiangsu 215153, P.R. China
| | - Jing Qu
- Department of Cell Biology, School of Biology and Basic of Medical Science, Medical College of Soochow University, P.R. China
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20
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Qu X, Wang S, Lin G, Li M, Shen J, Wang D. The Synergistic Effect of Thiamethoxam and Synapsin dsRNA Targets Neurotransmission to Induce Mortality in Aphis gossypii. Int J Mol Sci 2022; 23:ijms23169388. [PMID: 36012653 PMCID: PMC9408958 DOI: 10.3390/ijms23169388] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 07/20/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
Sublethal doses of insecticides have many impacts on pest control and agroecosystems. Insects that survive a sublethal dose of insecticide could adapt their physiological and behavioral functions and resist this environmental stress, which contributes to the challenge of pest management. In this study, the sublethal effects of thiamethoxam on gene expression were measured through RNA sequencing in the melon aphid Aphis gossypii. Genes regulating energy production were downregulated, while genes related to neural function were upregulated. To further address the function of genes related to neurotransmission, RNA interference (RNAi) was implemented by transdermal delivery of dsRNA targeting synapsin (syn), a gene regulating presynaptic vesicle clustering. The gene expression of synapsin was knocked down and the mortality of aphids was increased significantly over the duration of the assay. Co-delivery of syn-dsRNA and thiamethoxam reversed the upregulation of synapsin caused by low-dose thiamethoxam and resulted in lethality to melon aphids, suggesting that the decreased presynaptic function may contribute to this synergistic lethal effect. In addition, the nanocarrier star polycation, which could bind both dsRNA and thiamethoxam, greatly improved the efficacy of lethality. These results increase our knowledge of the gene regulation induced by sublethal exposure to neonicotinoids and indicated that synapsin could be a potential RNAi target for resistance management of the melon aphid.
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21
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Lu Y, Wang S, Wang Y, Li M, Liu Y, Xue D. Current Researches on Nanodrug Delivery Systems in Bladder Cancer Intravesical Chemotherapy. Front Oncol 2022; 12:879828. [PMID: 35720013 PMCID: PMC9202556 DOI: 10.3389/fonc.2022.879828] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 04/21/2022] [Indexed: 11/15/2022] Open
Abstract
Bladder cancer is one of the most common malignant tumors in urinary system. Intravesical chemotherapy is a common adjuvant therapy after transurethral resection of bladder tumors. However, it has several disadvantages such as low drug penetration rate, short residence time, unsustainable action and inability to release slowly, thus new drug delivery and new modalities in delivery carriers need to be continuously explored. Nano-drug delivery system is a novel way in treatment for bladder cancer that can increase the absorption rate and prolong the duration of drug, as well as sustain the action by controlling drug release. Currently, nano-drug delivery carriers mainly included liposomes, polymers, and inorganic materials. In this paper, we reveal current researches in nano-drug delivery system in bladder cancer intravesical chemotherapy by describing the applications and defects of liposomes, polymers and inorganic material nanocarriers, and provide a basis for the improvement of intravesical chemotherapy drugs in bladder cancer.
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Affiliation(s)
- Yilei Lu
- Department of Urology, The Forth Hospital of China Medical University, Shenyang, China
| | - Siqi Wang
- Department of Urology, The Forth Hospital of China Medical University, Shenyang, China
| | - Yuhang Wang
- Department of Urology, The Forth Hospital of China Medical University, Shenyang, China
| | - Mingshan Li
- Department of Urology, The Forth Hospital of China Medical University, Shenyang, China
| | - Yili Liu
- Department of Urology, The Forth Hospital of China Medical University, Shenyang, China
| | - Dongwei Xue
- Department of Urology, The Forth Hospital of China Medical University, Shenyang, China
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22
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Zhang W, Liu FQ, Zhang LP, Ding HG, Zhuge YZ, Wang JT, Li L, Wang GC, Wu H, Li H, Cao GH, Lu XF, Kong DR, Sun L, Wu W, Sun JH, Liu JT, Zhu H, Li DL, Guo WH, Xue H, Wang Y, Gengzang CJC, Zhao T, Yuan M, Liu SR, Huan H, Niu M, Li X, Ma J, Zhu QL, Guo WW, Zhang KP, Zhu XL, Huang BR, Li JN, Wang WD, Yi HF, Zhang Q, Gao L, Zhang G, Zhao ZW, Xiong K, Wang ZX, Shan H, Li MS, Zhang XQ, Shi HB, Hu XG, Zhu KS, Zhang ZG, Jiang H, Zhao JB, Huang MS, Shen WY, Zhang L, Xie F, Li ZW, Hou CL, Hu SJ, Lu JW, Cui XD, Lu T, Yang SS, Liu W, Shi JP, Lei YM, Bao JL, Wang T, Ren WX, Zhu XL, Wang Y, Yu L, Yu Q, Xiang HL, Luo WW, Qi XL. [Status of HVPG clinical application in China in 2021]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:637-643. [PMID: 36038326 DOI: 10.3760/cma.j.cn501113-20220302-00093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: The investigation and research on the application status of Hepatic Venous Pressure Gradient (HVPG) is very important to understand the real situation and future development of this technology in China. Methods: This study comprehensively investigated the basic situation of HVPG technology in China, including hospital distribution, hospital level, annual number of cases, catheters used, average cost, indications and existing problems. Results: According to the survey, there were 70 hospitals in China carrying out HVPG technology in 2021, distributed in 28 provinces (autonomous regions and municipalities directly under the central Government). A total of 4 398 cases of HVPG were performed in all the surveyed hospitals in 2021, of which 2 291 cases (52.1%) were tested by HVPG alone. The average cost of HVPG detection was (5 617.2±2 079.4) yuan. 96.3% of the teams completed HVPG detection with balloon method, and most of the teams used thrombectomy balloon catheter (80.3%). Conclusion: Through this investigation, the status of domestic clinical application of HVPG has been clarified, and it has been confirmed that many domestic medical institutions have mastered this technology, but it still needs to continue to promote and popularize HVPG technology in the future.
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Affiliation(s)
- W Zhang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - F Q Liu
- Department of Interventional Radiology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - L P Zhang
- Department of Radiology,Third Hospital of Taiyuan, Taiyuan 030012, China
| | - H G Ding
- Liver Disease Digestive Center,Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Y Z Zhuge
- Digestive Department,Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - J T Wang
- Department of Hepatobiliary Surgery, Xingtai People's Hospital, Xingtai 054001, China
| | - L Li
- Department of Interventional Radiology, the First Hospital of Lanzhou University, Lanzhou 730013, China
| | - G C Wang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - H Wu
- Digestive Department, West China Hospital, Sichuan University, Chengdu 610044, China
| | - H Li
- Institute of Hepatology and Department of Infectious Disease, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - G H Cao
- Department of Radiology, Shulan Hospital, Hangzhou 310022, China
| | - X F Lu
- Digestive Department, West China Hospital, Sichuan University, Chengdu 610044, China
| | - D R Kong
- Digestive Department, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - L Sun
- Department of Gastroenterology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325001, China
| | - W Wu
- Department of Gastroenterology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325001, China
| | - J H Sun
- Hepatobiliary and Pancreatic Intervention Center , the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - J T Liu
- Digestive Department,Hainan Hospital of Chinese PLA General Hospital, Sanya 572013, China
| | - H Zhu
- The 1 st Department of Interventional Radiology, the Sixth People's Hospital of Shenyang, Shenyang 110006, China
| | - D L Li
- No. 900 Hospital of the Joint Logistic Support Force, Fuzhou 350025, China
| | - W H Guo
- Department of Interventional Radiology, Meng Chao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - H Xue
- Digestive Department, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Y Wang
- Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - C J C Gengzang
- Department of Interventional Radiology, the Fourth People's Hospital of Qinghai Province, Xining 810007, China
| | - T Zhao
- Department of Radiology,Sir Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China
| | - M Yuan
- Department of Interventional Radiology Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - S R Liu
- Department of Infectious Disease,Qufu People's Hospital, Qufu 273199, China
| | - H Huan
- Digestive Department, Chengdu Office Hospital of Tibet Autonomous Region People's Government, Chengdu 610041, China
| | - M Niu
- Department of Interventional Radiology, the First Affiliated Hospital of China Medical University, Shenyang 110001, China
| | - X Li
- Department of Radiology,Tianjin Second People's Hospital, Tianjin 300192, China
| | - J Ma
- Department of Interventional Vascular Surgerg, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan 750002, China
| | - Q L Zhu
- Digestive Department,the Affiliated Hospital of Southwest Medical University, Luzhou 646099, China
| | - W W Guo
- Department of Interventional Radiology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - K P Zhang
- Department of Hepatobiliary Surgery, Xingtai People's Hospital, Xingtai 054001, China
| | - X L Zhu
- Department of Surgery, the First Hospital of Lanzhou University, Lanzhou 730013, China
| | - B R Huang
- Department of Interventional Vascular Surgery,Jingzhou First People's Hospital, Jingzhou, China
| | - J N Li
- Liver Diseases Department,Jiamusi Infectious Disease Hospital, Jiamusi 154015, China
| | - W D Wang
- Hepatobiliary, Pancreatic and Spleen Surgery Department,Shunde Hospital, Southern Medical University, Foshan 528427, China
| | - H F Yi
- Digestive Department,Wuhan First Hospital, Wuhan 430030, China
| | - Q Zhang
- Interventional Vascular Surgery Department, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China
| | - L Gao
- Oncology and Vascular Interventional Department, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - G Zhang
- Digestive Department, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, China
| | - Z W Zhao
- Department of Interventional Radiology, Lishui Municipal Central Hospital, Zhejiang University School of Medicine, Lishui 323030, China
| | - K Xiong
- Digestive Department, the Second Affiliated Hospital of Nanchang University, Nanchang 330008, China
| | - Z X Wang
- Inner Mongolia Medical University Affiliated Hospital, Hohhot 010050, China
| | - H Shan
- Interventional Medicine Center, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - M S Li
- Department of Endovascular Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - X Q Zhang
- Digestive Department, the Second Hospital of Hebei Medical University, Shijiazhuang 050004, China
| | - H B Shi
- Department of Interventional Radiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - X G Hu
- Interventional Radiology Department,Jinhua Municipal Central Hospital, Jinhua 321099, China
| | - K S Zhu
- Interventional Radiology Department, the Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510260, China
| | - Z G Zhang
- Department of Liver Surgery,Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - H Jiang
- Infectious Disease Department,Second Affiliated Hospital, Military Medical University of the Air Force, Xi'an 710038, China
| | - J B Zhao
- Department of Vascular and Interventional Radiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - M S Huang
- Interventional Radiology Department, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510000, China
| | - W Y Shen
- Digestive Department,Fuling Hospital Affiliated to Chongqing University, Chongqing 400030, China
| | - L Zhang
- Hepatobiliary Pancreatic Center,Tsinghua Changgung Hospital, Beijing 102200, China
| | - F Xie
- Function Department,Lanzhou Second People's Hospital, Lanzhou 730030, China
| | - Z W Li
- Hepatobiliary Surgery Department,Shenzhen Third People's Hospital, Shenzhen518112, China
| | - C L Hou
- Department of Interventional Radiology, the First Affiliated Hospital of USTC, Hefei 230001, China
| | - S J Hu
- Digestive Department,People's Hospital of Ningxia Hui Autonomous Region, Yinchuan 750002, China
| | - J W Lu
- Department of Interventional Radiology, Qufu People's Hospital, Qufu 273199, China
| | - X D Cui
- Department of Interventional Radiology, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, China
| | - T Lu
- Department of Gastroenterology, Yangquan Third People's Hospital, Yangquan 045099,China
| | - S S Yang
- Department of Gastroenterology, General Hospital of Ningxia Medical University , Yinchuan 750003, China
| | - W Liu
- Department of Interventional Radiology, Lishui People's Hospital, Zhejiang Province, Lishui 323050, China
| | - J P Shi
- Department of Liver Diseases, Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Y M Lei
- Interventional Radiology Department, People's Hospital of Tibet Autonomous Region, Lhasa 850001, China
| | - J L Bao
- Department of Gastroenterology, Shannan people's Hospital,Shannan 856004, China
| | - T Wang
- Department of Interventional Radiology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264099,China
| | - W X Ren
- Interventional Treatment Center, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011,China
| | - X L Zhu
- Interventional Radiology Department, the First Affiliated Hospital of Suzhou University, Suzhou 215006, China
| | - Y Wang
- Department of Interventional Vascular Surgery, the Second Affiliated Hospital of Hainan Medical College, Haikou 570216, China
| | - L Yu
- Department of Interventional Radiology, Sanming First Hospital Affiliated to Fujian Medical University,Sanming 365001,China
| | - Q Yu
- Interventional Radiology Department, Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - H L Xiang
- Department of Gastroenterology, Tianjin Third Central Hospital, Tianjin 300170, China
| | - W W Luo
- Deparment of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - X L Qi
- Center of Portal Hypertension Department of Radiology, Zhongda Hospital of Southeast University, Nanjing 210009, China
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23
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Li M, Vora LK, Peng K, Donnelly RF. Trilayer microneedle array assisted transdermal and intradermal delivery of dexamethasone. Int J Pharm 2022; 612:121295. [PMID: 34785356 DOI: 10.1016/j.ijpharm.2021.121295] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 08/09/2021] [Revised: 11/06/2021] [Accepted: 11/10/2021] [Indexed: 12/15/2022]
Abstract
Dexamethasone is a synthesised glucocorticoid that is widely used in the treatment of various inflammatory skin conditions. Novel trilayer dissolving microneedle arrays were manufactured to assist dexamethasone delivery via the skin. Both transdermal delivery and intradermal delivery of dexamethasone can be achieved this way. Additionally, we proposed a novel strategy of co-formulating dexamethasone and its pro-drug dexamethasone sodium phosphate into the same dissolving microneedle array, with a view to achieving a fast onset of action and also sustained treatment. Here, a 3D-printing technique was employed, for the first time, to fabricate a baseplate for these microneedle arrays. The 3D-printed baseplates provided strong support to aid the insertion of the drug-encapsulated tips. A simple and rapid HPLC method was developed, and validated, to separate and quantify dexamethasone and dexamethasone sodium phosphate in the same sample. Ex-vivo studies found that these trilayer dissolving microneedle arrays could achieve a delivery efficiency of over 40% in intradermal delivery and over 50% in transdermal delivery. Trilayer microneedle-assisted delivery of this glucocorticoid provided a promising alternative to oral and parenteral routes of dexamethasone administration.
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Affiliation(s)
- Mingshan Li
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Lalitkumar K Vora
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Ke Peng
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK.
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24
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Gordon JB, Hoffman MC, Troiano JM, Li M, Hazelbauer GL, Schlau-Cohen GS. Concerted Differential Changes of Helical Dynamics and Packing upon Ligand Occupancy in a Bacterial Chemoreceptor. ACS Chem Biol 2021; 16:2472-2480. [PMID: 34647725 PMCID: PMC9990816 DOI: 10.1021/acschembio.1c00576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Transmembrane receptors are central components of the chemosensory systems by which motile bacteria detect and respond to chemical gradients. An attractant bound to the receptor periplasmic domain generates conformational signals that regulate a histidine kinase interacting with its cytoplasmic domain. Ligand-induced signaling through the periplasmic and transmembrane domains of the receptor involves a piston-like helical displacement, but the nature of this signaling through the >200 Å four-helix coiled coil of the cytoplasmic domain had not yet been identified. We performed single-molecule Förster resonance energy transfer measurements on Escherichia coli aspartate receptor homodimers inserted into native phospholipid bilayers enclosed in nanodiscs. The receptors were labeled with fluorophores at diagnostic positions near the middle of the cytoplasmic coiled coil. At these positions, we found that the two N-helices of the homodimer were more distant, that is, less tightly packed and more dynamic than the companion C-helix pair, consistent with previous deductions that the C-helices form a stable scaffold and the N-helices are dynamic. Upon ligand binding, the scaffold pair compacted further, while separation and dynamics of the dynamic pair increased. Thus, ligand binding had asymmetric effects on the two helical pairs, shifting mean distances in opposite directions and increasing the dynamics of one pair. We suggest that this reflects a conformational change in which differential alterations to the packing and dynamics of the two helical pairs are coupled. These coupled changes could represent a previously unappreciated mode of conformational signaling that may well occur in other coiled-coil signaling proteins.
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Affiliation(s)
- Jesse B Gordon
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, 6-225, Cambridge, Massachusetts 02139, United States
| | - Mikaila C Hoffman
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, 6-225, Cambridge, Massachusetts 02139, United States
| | - Julianne M Troiano
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, 6-225, Cambridge, Massachusetts 02139, United States
| | - Mingshan Li
- Department of Biochemistry, University of Missouri, 117 Schweitzer Hall, Columbia, Missouri 65211, United States
| | - Gerald L Hazelbauer
- Department of Biochemistry, University of Missouri, 117 Schweitzer Hall, Columbia, Missouri 65211, United States
| | - Gabriela S Schlau-Cohen
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, 6-225, Cambridge, Massachusetts 02139, United States
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25
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Zhang PW, Zhang H, Li MS, Lin YD, Sun J, Lin MB, Liu YL. [Factors associated with selection of breast-conserving surgery in early female patients with breast cancer]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:2044-2052. [PMID: 34818853 DOI: 10.3760/cma.j.cn112338-20210516-00402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To analyse the factors associated with the selection of breast- conserving surgery in early female patients with breast cancer. Methods: The targeted patients were females diagnosed with early-stage breast cancer and received surgical treatment at Fujian Provincial Hospital from January 1, 2015, to December 31, 2019. The targeted patients' clinical, demographic, and social-economic characteristics were extracted from the hospital health information system. Relevant information of their attending surgeons was collected through a smart-phone based self-respond online survey. We performed multivariate logistic regression to explore the associated factors with breast-conserving surgery (BCS) decision-making. Results: The age of the patient and attending surgeon and the economic development level of the patient's residence area were the associated factors with BCS decision-making of female early-stage breast cancer. By controlling the other factors unchanged, patients from middle-income areas were more likely to accept BCS (OR=1.91, 95%CI: 1.01-3.62, P=0.05) than those from low-income areas. When the attending surgeon was at the average age of 45 years old, increasing of 1 year age of patient led to 4% decrease of the probability of BCS (95%CI: -0.07 - -0.01, P=0.01). When the patient was at the average age of 52 years old, increasing of 1 year age of the attending surgeon reduced 10% of the probability of BCS (95%CI: -0.19 - -0.01, P=0.03). The interaction effects related to the age of attending surgeon and patient for some observations to choose BCS were statistically significant, and the average interaction effect was 0.06% (Z=2.11, sx =0.000 3, P<0.05). Conclusion: To promote breast-conserving surgery in the indicated early female patients with breast cancer, it is necessary to consider factors from both the surgeons and the patients.
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Affiliation(s)
- P W Zhang
- School of Health Policy and Management, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100710, China
| | - H Zhang
- Department of Oncology Surgery, Fujian Provincial Hospital, Fuzhou 350001, China
| | - M S Li
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100710, China
| | - Y D Lin
- Department of Oncology Surgery, Fujian Provincial Hospital, Fuzhou 350001, China
| | - J Sun
- School of Health Policy and Management, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100710, China
| | - M B Lin
- Department of Oncology Surgery, Fujian Provincial Hospital, Fuzhou 350001, China
| | - Y L Liu
- School of Health Policy and Management, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100710, China
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26
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Zhao L, Zhang C, Abu‐Ershaid JM, Li M, Li Y, Naser Y, Dai X, Abbate MTA, Donnelly RF. Smart Responsive Microarray Patches for Transdermal Drug Delivery and Biological Monitoring. Adv Healthc Mater 2021; 10:e2100996. [PMID: 34449129 DOI: 10.1002/adhm.202100996] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/15/2021] [Indexed: 12/12/2022]
Abstract
Traditional drug delivery routes possess various disadvantages which make them unsuitable for certain population groups, or indeed unsuitable for drugs with certain physicochemical properties. As a result, a variety of alternative drug delivery routes have been explored in recent decades, including transdermal drug delivery. One of the most promising novel transdermal drug delivery technologies is a microarray patch (MAP), which can bypass the outermost skin barrier and deliver drugs directly into the viable epidermis and dermis. Unlike traditional MAPs which release loaded cargo simultaneously upon insertion into the skin, stimuli responsive MAPs based on biological stimuli are able to precisely release the drug in response to the need for additional doses. Thus, smart MAPs that are only responsive to certain external stimuli are highly desirable, as they provide safer and more efficient drug delivery. In addition to drug delivery, they can also be used for biological monitoring, which further expands their applications.
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Affiliation(s)
- Li Zhao
- School of Pharmacy Queen's University Belfast 97 Lisburn Road Belfast BT9 7BL UK
| | - Chunyang Zhang
- School of Pharmacy Queen's University Belfast 97 Lisburn Road Belfast BT9 7BL UK
| | | | - Mingshan Li
- School of Pharmacy Queen's University Belfast 97 Lisburn Road Belfast BT9 7BL UK
| | - Yaocun Li
- School of Pharmacy Queen's University Belfast 97 Lisburn Road Belfast BT9 7BL UK
| | - Yara Naser
- School of Pharmacy Queen's University Belfast 97 Lisburn Road Belfast BT9 7BL UK
| | - Xianbing Dai
- School of Pharmacy Queen's University Belfast 97 Lisburn Road Belfast BT9 7BL UK
| | - Marco T. A. Abbate
- School of Pharmacy Queen's University Belfast 97 Lisburn Road Belfast BT9 7BL UK
| | - Ryan F. Donnelly
- School of Pharmacy Queen's University Belfast 97 Lisburn Road Belfast BT9 7BL UK
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27
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Chen ZD, Li MS, Wei B, Xi HQ, Chen L. [Evaluation of basic laparoscopic training under 5A teaching mode]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:711-717. [PMID: 34412189 DOI: 10.3760/cma.j.cn.441530-20200706-00403] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the rationality and effectiveness of basic laparoscopic training under 5A teaching mode. Methods: A prospective randomized controlled study was conducted. The teaching records of 70 trainees who received basic laparoscopic traning at the Laparoscopic Surgical Training Base in Chinese PLA General Hospital from July to December 2019 were analyzed. All the trainees participating in the laparoscopy training had obtained the national practicing physician certificates, including 12 junior physicians of our center, 9 intermediate physicians of our center, 19 advanced physicians, 13 postgraduate students, 8 doctoral students, and 9 surgical standardized training physicians. A random number table method was used to divide all the trainees into two groups: the traditional teaching group or the 5A teaching group (35 people in each group). In the traditional teaching group, the training of 4 modules of " precise beans, quincuncial piles, ring positioning and knot-tying suture" modules according to a fixed sequence and schedule was carried out. Each module had a learning time of 8 hours. In the 5A teaching group, the training started from five dimensions of analysis, aim, accomplishment, appraise and advance. Before conducting each stage of training, the actual operation ability of the trainees was tested, each class hour was designed individually, accurate teaching was conducted to the trainees, the ability of the trainees was evaluated dynamically, and the previous steps were cycled periodically based on class hours. The operating time and pass rate of trainees of two groups in the basic operation module of laparoscopy were statistically analyzed, and a hierarchical analysis of related influencing factors was conducted. Results: The time of above modules before training in the 5A teaching group and the traditional teaching group was similar (all P>0.05). After definitive training, the time required for trainees in 5A teaching group and traditional teaching group to complete the 4 modules was shortened to varying degrees. Compared to traditional teaching group, 5A teaching group spent less time in completing each project [precise beans: (63.2±10.1) seconds vs. (83.6±18.7) seconds, quincuncial piles: (56.2±7.3) seconds vs. (101.4±31.7) seconds, ring positioning: (84.2±13.7) seconds vs. (127.3±28.5) seconds, knot-tying suture: (263.2±41.8) seconds vs.(428.8±95.2) seconds, all P<0.05], and had higher pass rates [precise beans: 97.1% (34/35) vs. 80.0% (28/35), quincuncial piles: 91.4% (32/35) vs.71.4% (25/35), ring positioning: 100.0% (35/35) vs. 82.9% (29/35), knot-tying suture: 77.1% (27/35) vs. 60.0% (21/35), all P<0.05]. Among the junior trainees (junior physicians of our center, postgraduate students, doctoral students, and standardized surgical training physicians) and intermediate trainees (intermediate physicians of our center and advanced physicians), the 5A teaching group completed 3 modules (quincuncial piles, ring positioning and knot-tying suture) faster than the traditional teaching group [junior trainees: quincuncial piles (76.4±12.4) seconds vs. (139.8±41.6) seconds, ring positioning (92.2±20.5) seconds vs. (131.3±28.4) seconds, knot-tying suture (293.8±66.7) seconds vs. (444.3±103.3) seconds; intermediate trainees: quincuncial piles (51.4±5.9) seconds vs. (94.7±8.6) seconds, ring positioning (63.9±13.5) seconds vs. (87.5±18.6) seconds, knot-tying suture (210.1±35.6) seconds vs. (367.5±54.9) seconds, all P<0.05]. Conclusion: 5A teaching mode can acheive better training results compared with the traditional teaching mode in basic laparoscopic training, and is worthy of further popularization and application.
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Affiliation(s)
- Z D Chen
- Department of Abdominal Trauma Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China CMDA Laparoscopic Surgeon Training Base (PLA General Hospital Base), Beijing 100853, China
| | - M S Li
- Department of Gastric Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China Beijing Boyi Times Education & Technology Co., Ltd. Beijing 100122, China
| | - B Wei
- Department of Abdominal Trauma Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China CMDA Laparoscopic Surgeon Training Base (PLA General Hospital Base), Beijing 100853, China
| | - H Q Xi
- Department of Abdominal Trauma Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China CMDA Laparoscopic Surgeon Training Base (PLA General Hospital Base), Beijing 100853, China
| | - L Chen
- CMDA Laparoscopic Surgeon Training Base (PLA General Hospital Base), Beijing 100853, China Department of Gastric Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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Li MS, Zheng SQ, Sheng ZH, He SY, Deng QY, Liang C, Wu ZP, Cao FQ, Du M. Determination of Azide Ions in Blood by Pentafluorobenzyl Derivation Followed by GC-MS. Fa Yi Xue Za Zhi 2021; 37:378-381. [PMID: 34379908 DOI: 10.12116/j.issn.1004-5619.2020.300304] [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] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Indexed: 11/30/2022]
Abstract
Abstract Objective To establish a method for determination of the azide ions in blood by gas chromatography-mass spectrometry (GC-MS) following pentafluorobenzyl derivatization. Methods A blood sample of 0.2 mL was placed into a 10 mL glass test tube, and the internal standard sodium cyanide, derivatization reagent pentafluorobenzyl bromide and catalyst tetradecyl benzyl dimethyl ammonium chloride were added in turn. After vortex mixing, the mixture was heated with low-power microwave for 3 min. After centrifugation, the organic phase was taken for GC-MS analysis. Results The azide ions in blood had a good linear relationship in the mass concentration range of 0.5 to 20 μg/mL. The lowest detection limit was 0.25 μg/mL and the relative recovery was 91.36%-94.58%. The method was successfully applied to a case of death from sodium azide poisoning. The mass concentration of azide ions in the blood of the dead was 11.11 μg/mL. Conclusion The method developed in this paper has strong specificity and is easy to operate, which is suitable for the rapid detection of azide ions in blood.
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Affiliation(s)
- M S Li
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - S Q Zheng
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - Z H Sheng
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - S Y He
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - Q Y Deng
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - C Liang
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - Z P Wu
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - F Q Cao
- Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology, Shanghai 200083, China
| | - M Du
- Institute of Criminal Science, Jiading Branch of Shanghai Public Security Bureau, Shanghai 201800, China
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Zhang Y, Li MS, Liu GF, Lin XJ, Feng L, Xu AQ, Zhang L. [Analysis of Neisseria Meningitidis carriage characteristics among healthy population in Shandong province from 2008 to 2020]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:973-977. [PMID: 34445835 DOI: 10.3760/cma.j.cn112150-20210412-00358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the carriage characteristics of Neisseria meningitidis (Nm) among healthy population of epidemic cerebrospinal meningitis in Shandong province. Methods: From April 2008 to April 2020, a total of 16 848 healthy population were recruited from Lixia District of Jinan City, Gaomi City of Weifang City, Jiaxiang County of Jining City, Wendeng District of Weihai City, Tancheng County of Linyi City and Linyi County of Dezhou City for the investigation.Throat swab samples were collected, Nm was isolated, cultured and identified, and Nm carrying characteristics of healthy population with different characteristics were analyzed. Results: Among the 16 848 healthy population, male accounted for 51.86% (8 737). A total of 136 Nm strains were isolated, and the carriage rate was 0.81%. Among the 136 Nm strains, serogroup B (60.29%) and ungroupable strains (23.53%) were dominant. Analysis of the Nm carriage rate, that were higher in the healthy population of Linyi (1.39%) and Jinan (1.14%), higher in 13-16 years old (1.60%) and 17-19 years old (1.10%) healthy population, and higher in male (1.02%). Conclusion: The Nm carriage rate of healthy population is relatively low in Shandong Province, and the proportion of serogroup B and ungroupable Nm is relatively high.
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Affiliation(s)
- Y Zhang
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - M S Li
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - G F Liu
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - X J Lin
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - L Feng
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - A Q Xu
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - L Zhang
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
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Zhang H, Pei Z, Wang C, Li M, Zhang H, Qu J. Electrohydrodynamic 3D Printing Scaffolds for Repair of Achilles Tendon Defect in Rats. Tissue Eng Part A 2021; 27:1343-1354. [PMID: 33573468 DOI: 10.1089/ten.tea.2020.0290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Tissue engineering (TE) studies for Achilles tendon (AT) defects are a difficult and popular field in orthopedic medical practice. In this study, we applied electrohydrodynamic three-dimensional (3D) printing technology to construct scaffolds made of poly-(ɛ-ɛ-caprolactone) (PCL) and Pluronic F127 (F127) with different mass-volume ratios. The fibers and porous capabilities of the scaffolds were controlled using this technology. We found that F127 improved the hydrophilicity and degradation of PCL in vitro. The PCL scaffolds with 5% F127 were mostly favorable for cell adhesion and growth, suggesting that the scaffolds had good biocompatibility in vitro. Scaffolds with 5% F127 seeded with C3H10T1/2 cells were transplanted into AT defects in rats. A histological analysis indicated that the TE scaffolds were beneficial for the accumulation and arrangement of collagen fibers. Thus, this study provides fundamental experimental data for future clinical applications regarding TE for ATs.
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Affiliation(s)
- Hang Zhang
- Department of Orthopedics, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zijie Pei
- Department of Orthopedics, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Changbao Wang
- Department of Orthopedics, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Mingshan Li
- Department of Cell Biology, Medical College of Soochow University, Soochow University, Suzhou, China
| | - Hongtao Zhang
- Department of Orthopedics, the First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jing Qu
- Department of Cell Biology, Medical College of Soochow University, Soochow University, Suzhou, China
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Xia C, Tao Y, Li M, Che T, Qu J. Protein acetylation and deacetylation: An important regulatory modification in gene transcription (Review). Exp Ther Med 2020; 20:2923-2940. [PMID: 32855658 PMCID: PMC7444376 DOI: 10.3892/etm.2020.9073] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [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: 09/08/2019] [Accepted: 04/24/2020] [Indexed: 12/16/2022] Open
Abstract
Cells primarily rely on proteins to perform the majority of their physiological functions, and the function of proteins is regulated by post-translational modifications (PTMs). The acetylation of proteins is a dynamic and highly specific PTM, which has an important influence on the functions of proteins, such as gene transcription and signal transduction. The acetylation of proteins is primarily dependent on lysine acetyltransferases and lysine deacetylases. In recent years, due to the widespread use of mass spectrometry and the emergence of new technologies, such as protein chips, studies on protein acetylation have been further developed. Compared with histone acetylation, acetylation of non-histone proteins has gradually become the focus of research due to its important regulatory mechanisms and wide range of applications. The discovery of specific protein acetylation sites using bioinformatic tools can greatly aid the understanding of the underlying mechanisms of protein acetylation involved in related physiological and pathological processes.
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Affiliation(s)
- Can Xia
- Department of Cell Biology, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Yu Tao
- Department of Cell Biology, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Mingshan Li
- Department of Cell Biology, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Tuanjie Che
- Laboratory of Precision Medicine and Translational Medicine, Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou Science and Technology Town Hospital, Suzhou, Jiangsu 215153, P.R. China
| | - Jing Qu
- Department of Cell Biology, Medical College of Soochow University, Suzhou, Jiangsu 215123, P.R. China
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Abstract
Vitis champinii is a grapevine rootstock species and widely used in vineyards and in rootstock breeding programs for regions with high nematode populations or saline soils. Here, the complete chloroplast genome of V. champinii was reported. The length of the chloroplast genome was 160,657 bp with a large single copy region of 89,217 bp, a small single copy region of 19,504 bp and two separated inverted regions of 51,936 bp, respectively. In total, 130 unique genes were identified of this genome, including 85 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. Phylogenetic analysis indicates that V. champinii is closely related to Vitis acerifolia.
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Affiliation(s)
- Jiang Xiang
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Lingzhu Wei
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jianhui Cheng
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Mingshan Li
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Pengfei Cui
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jiang Wu
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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Xiang J, Cheng J, Wei L, Cui P, Li M, Wu J. The complete chloroplast genome sequence of Vitis berlandieri. Mitochondrial DNA B Resour 2020; 5:3050-3051. [PMID: 33458054 PMCID: PMC7782149 DOI: 10.1080/23802359.2020.1797566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Vitis berlandieri, a species of grape native to the southern North America, is known for good tolerance against soils with a high content of lime and was almost used for rootstock breeding. Here, we report the complete chloroplast genome of V. berlandieri. The chloroplast genome was 161,028 bp in length, harboring a large single-copy region (89,228 bp) and a small single-copy region (19,028 bp) separated by two inverted repeat regions. A total of 130 unique genes were identified from this genome, including 85 protein-coding genes (PCGs), 37 tRNA genes, and 8 rRNA genes. Chloroplast phylogenetic analysis revealed that V. berlandieri is closely related to V. cordifolia.
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Affiliation(s)
- Jiang Xiang
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jianhui Cheng
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Lingzhu Wei
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Pengfei Cui
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Mingshan Li
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jiang Wu
- Institute of Horticulture, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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Li BZ, Li MS, Huang JY, Chen YY, Lu YH. [Expanding the pandemic influenza preparedness framework to the epidemic of COVID-19]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:597-601. [PMID: 32842276 DOI: 10.3760/cma.j.cn112150-20200316-00357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
On March 11, 2020, WHO officially declared that COVID-19 had become Pandemic. As of March 31, the epidemic had affected more than 178 countries and regions, with more than 780 000 confirmed cases. The Pandemic Influenza Preparedness Framework for the sharing of influenza viruses and access to vaccines and other benefits (the 'PIP Framework' or 'Framework') is an international arrangement adopted by the World Health Organization in May 2011 to improve global pandemic influenza preparedness and response. Since the transmission route and transmission capacity of COVID-19 are similar to that of influenza A (H1N1) in 2009, which conforms to the basic elements of "human pandemic", and the epidemic scale has exceeded that of influenza A (H1N1), it is probable to incorporate COVID-19 epidemic response into PIPF, and at the same time to verify and improve PIPF in practice. It is recommended that WHO, other international organizations and relevant countries make full use of the PIPF system to respond to the epidemic and better coordinate national actions at the global level. At the same time, China should also make the planning and deploy of domestic epidemic prevention and control and international epidemic cooperation under the framework.
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Affiliation(s)
- B Z Li
- School of Public Health, Fudan University, Shanghai 200032, China
| | - M S Li
- School of Public Health, Fudan University, Shanghai 200032, China
| | - J Y Huang
- School of Public Health, Fudan University/National Health Commission Key Laboratory of Health Technology Assessment (Fudan University)/Fudan Global Health Institute, Shanghai 200032, China
| | - Y Y Chen
- School of Public Health, Fudan University/National Health Commission Key Laboratory of Health Technology Assessment (Fudan University)/Fudan Global Health Institute, Shanghai 200032, China
| | - Y H Lu
- School of Public Health, Fudan University/Ministry of Education Key Laboratory of Public Health and Safety (Fudan University) /Fudan Global Health Institute, Shanghai 200032, China
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Liu CP, Gu YY, Li SY, Chen XB, Li LG, Jiang JJ, Zhao J, Fu L, Li MS, Chen ZC. [Transbronchial lung cryobiopsy in diffuse lung disease: a pathological analysis of 173 cases]. Zhonghua Jie He He Hu Xi Za Zhi 2020; 43:228-233. [PMID: 32164094 DOI: 10.3760/cma.j.issn.1001-0939.2020.03.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the value of transbronchial lung cryobiopsy (TBCB) in pathological diagnosis for diffuse lung disease. Methods: The clinicopathological data of 173 patients from the first affiliated hospital of Guangzhou medical university between Jaunary 2017 and June 2019 with transbronchial lung cryobiopsy of diffuse lung disease were retrospectively analyzed and summarized with review. Among 173 cases, TBCB and conventional transbronchial lung biopsy (TBLB) were performed in 54 patients. The size of biopsy samples and diagnostic yield were compared. Results: Among 173 cases, the diagnostic yield was 85.54% (148/173) , 160 (92.49%) cases provided definite diagnosis and valuable pathological results, according to age, sex, occupation, past history, contact history, smoking history, laboratory serology and imaging findings. Among 160 cases, there were 72 cases of known etiology (45.00%), 27 cases of idiopathic interstitial pneumonia (16.88%), 7 cases of granulomatous lesions (4.38%) and 54 cases of other types (33.75%). With TBCB and TBLB in 54 patients, the specimens sizes of TBCB and TBLB were (3.3±1.3) mm(2) and (1.0±0.3) mm(2) respectively (t'=12.67 P<0.01) . The diagnostic yields of TBCB and TBLB were 81.48% (44/54) and 42.59% (23/54) respectively (χ(2)=17.33, P<0.01) . The diagnostic yields of TBCB and TBLB for interstitial lung diseases were 48.15% (26/54) and 5.56% (3/54) respectively (χ(2)=24.94, P<0.01) . However, the diagnostic yields of TBCB and TBLB for the other diffuse lung disease except interstitial lung diseases were 33.33% (18/54) and 37.04% (20/54) respectively, with no significant difference (χ(2)=0.1624, P=0.687). Conclusion: Compared with TBLB, TBCB has obvious advantages and application value in the diagnosis of diffuse pulmonary diseases, especially interstitial pulmonary diseases.
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Affiliation(s)
- C P Liu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Pathology Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510090, China
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Guan W, Tang N, He K, Hu X, Li M, Li K. Gas-Sensing Performances of Metal Oxide Nanostructures for Detecting Dissolved Gases: A Mini Review. Front Chem 2020; 8:76. [PMID: 32154213 PMCID: PMC7047834 DOI: 10.3389/fchem.2020.00076] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 01/23/2020] [Indexed: 11/26/2022] Open
Abstract
Gas sensors have been wildly used in various fields related to people's lives. Gas sensor materials were the core factors that affected the performances of various gas sensors, and these have attracted much attention from scientific researchers due their high sensitivity, high selectivity, adjustable reliability, low cost, and other advantages. The preparation of nanostructures with a highly specific surface area was a useful method to improve the gas-sensing performance of a metal oxide semiconductor. Meanwhile, lots of research has focused on preparing nanostructures with a highly specific surface area. This paper has explored some fabricated sensors with high sensitivity, good selectivity, and long-term stability, which has also made them promising candidates for toxic gas detection. Besides, this paper has reviewed the development status of metal oxides used as gas sensors.
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Affiliation(s)
- Wei Guan
- South China Institute of Environmental Sciences, Ministry of Ecological Environment, Guangzhou, China.,The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou, China
| | - Na Tang
- Chongqing Solid Wastes Management Center, Chongqing, China
| | - Kuang He
- South China Institute of Environmental Sciences, Ministry of Ecological Environment, Guangzhou, China.,The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou, China
| | - Xiaoying Hu
- South China Institute of Environmental Sciences, Ministry of Ecological Environment, Guangzhou, China.,The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou, China
| | - Mingshan Li
- South China Institute of Environmental Sciences, Ministry of Ecological Environment, Guangzhou, China.,The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou, China
| | - Kaiming Li
- South China Institute of Environmental Sciences, Ministry of Ecological Environment, Guangzhou, China.,The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Environmental Protection (MEP), Guangzhou, China
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Luo T, Li MS, Williams D, Phillippi S, Yu Q, Kantrow S, Kao YH, Celestin M, Lin WT, Tseng TS. Using social media for smoking cessation interventions: a systematic review. Perspect Public Health 2020; 141:50-63. [DOI: 10.1177/1757913920906845] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: Previous studies have shown that smoking tobacco significantly increases both incidence and mortality rates for many diseases. Social media has become one of the most influential platforms for various smoking cessation interventions. However, results from smoking cessation interventions have differed from study to study. Limited studies have summarised cessation outcomes from social media–based interventions. Therefore, the objective of this review is to explore the effectiveness of using social media for smoking cessation. Methods: We searched PubMed, MEDLINE, PsycINFO, and CINAHL for articles between June 2008 and June 2018, and also assessed the references of selected articles. We included studies that used social media as intervention platforms, provided a baseline assessment before the intervention, and provided smoking cessation outcomes after the intervention. Results: We identified 13 original studies that enrolled between 16 and 1698 participants; 7-day Point Prevalence Abstinence (PPA) rate was the most frequently used measure of abstinence, with a range of 7%–75%, regardless of the measurement time, study design, and analysis methods. Social media–based smoking cessation interventions were effective, because (1) smokers reported higher 7-day PPA rates after intervention compared to baseline and (2) smokers reported higher 7-day PPA rates in intervention groups than in control groups. Moreover, at each time point, approximately half of all smokers in studies reporting abstinence were found to be biochemically abstinent. There were no significant differences in the effectiveness of smoking cessation outcomes between those that used existing popular social networking platforms (e.g. Pechmann et al’s studies) and those that used individually designed interactive platforms (e.g. MyLastDip, iQuit system, Quitxt system). Conclusions: This review highlights the effectiveness of social media–based smoking cessation intervention studies. Due to the widespread use of social media, as well as its low cost, we suggest embedding smoking cessation interventions within existing popular social media platforms.
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Affiliation(s)
- T Luo
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - MS Li
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
- School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - D Williams
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - S Phillippi
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Q Yu
- Biostatistics, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - S Kantrow
- School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - YH Kao
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - M Celestin
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - WT Lin
- Department of Global Community Health and Behavioral Sciences, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA, USA
| | - TS Tseng
- Associate Professor, Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, 2020 Gravier Street, Room 213, New Orleans, LA 70112, USA
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Li M, Hazelbauer GL. Methyltransferase CheR binds to its chemoreceptor substrates independent of their signaling conformation yet modifies them differentially. Protein Sci 2020; 29:443-454. [PMID: 31654429 PMCID: PMC6954704 DOI: 10.1002/pro.3760] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 10/22/2019] [Accepted: 10/23/2019] [Indexed: 12/24/2022]
Abstract
Methylation of specific chemoreceptor glutamyl residues by methyltransferase CheR mediates sensory adaptation and gradient sensing in bacterial chemotaxis. Enzyme action is a function of chemoreceptor signaling conformation: kinase-off receptors are more readily methylated than kinase-on, a feature central to adaptational and gradient-sensing mechanisms. Differential enzyme action could reflect differential binding, catalysis or both. We investigated by measuring CheR binding to kinase-off and kinase-on forms of Escherichia coli aspartate receptor Tar deleted of its CheR-tethering, carboxyl terminus pentapeptide. This allowed characterization of the low-affinity binding of enzyme to the substrate receptor body, otherwise masked by high-affinity interaction with pentapeptide. We quantified the low-affinity protein-protein interactions by determining kinetic rate constants of association and dissociation using bio-layer interferometry and from those values calculating equilibrium constants. Whether Tar signaling conformations were shifted by ligand occupancy or adaptational modification, there was little or no difference between the two signaling conformations in kinetic or equilibrium parameters of enzyme-receptor binding. Thus, differential methyltransferase action does not reflect differential binding. Instead, the predominant determinants of binding must be common to different signaling conformations. Characterization of the dependence of association rate constants on Deybe length, a measure of the influence of electrostatics, implicated electrostatic interactions as a common binding determinant. Taken together, our observations indicate that differential action of methyltransferase on kinase-off and kinase-on chemoreceptors is not the result of differential binding and suggest it reflects differential catalytic propensity. Differential catalysis rather than binding could well be central to other enzymes distinguishing alternative conformations of protein substrates.
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Affiliation(s)
- Mingshan Li
- Department of BiochemistryUniversity of Missouri‐ColumbiaColumbiaMissouri
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Chen S, Li C, Hou T, Cai Y, Liang L, Chen L, Li M. Polyhexamethylene guanidine functionalized chitosan nanofiber membrane with superior adsorption and antibacterial performances. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2019.104379] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Santiago AAG, Lovisa LX, Medeiros PN, Li MS, Carreño NLV, Longo E, Paskocimas CA, Bomio MRD, Motta FV. Fast and simultaneous doping of Sr 0.9-x-y-zCa 0.1In 2O 4:(xEu 3+, yTm 3+, zTb 3+) superstructure by ultrasonic spray pyrolysis. Ultrason Sonochem 2019; 56:14-24. [PMID: 31101248 DOI: 10.1016/j.ultsonch.2019.03.028] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 02/18/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
In the present work, Sr0.9-x-y-zCa0.1In2O4:(xEu3+, yTm3+, zTb3+) particles were synthesized by the ultrasonic spray pyrolysis (USP) method to obtain a single-phase white phosphorus formed by six different cations in solution within the lattice (superstructure). The samples were also structurally and morphologically characterized by X-ray diffraction (XRD) techniques and by field emission scanning electron microscopy (FE-SEM). The photoluminescent behavior and the characteristics of the emitted colors were studied by the variation in the co-doping of the rare earth elements. The Sr0.9Ca0.1In2O4 sample showed a near blue color emission, but all co-doped samples showed emission in white with very close chromaticity coordinates to the standard white (x = 0.33 and y = 0.33). The Tm3+ → Tb3+ (ET1), Tm3+ → Eu3+ (ET2) and Tb3+ → Eu3+ (ET3) Energy Transfers were proposed and are considered necessary for adjusting and controlling the desired color properties.
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Affiliation(s)
- A A G Santiago
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil.
| | - L X Lovisa
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil
| | - P N Medeiros
- IFBA, Instituto Federal da Bahia - Campus Jacobina, 44700-000 Jacobina, BA, Brazil
| | - M S Li
- IFSC, USP, Av. Trabalhador São Carlense, 400, CEP 13566-590 São Carlos, SP, Brazil
| | - N L V Carreño
- Graduate Program in Materials Science and Engineering, Technology Development Center, Federal University of Pelotas, 96010-000 Pelotas, RS, Brazil
| | - E Longo
- LIEC, DQ, UFSCar, CEP 13565-905 São Carlos, SP, Brazil
| | - C A Paskocimas
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil
| | - M R D Bomio
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil
| | - F V Motta
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil
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Kong Y, Xu K, Ye XC, Han CP, Li MS, Chen ZD. [Preliminary observation on the changes of T(1) weighted signal of globus pallidus after multiple intravenous injection of linear gadolinium contrast agent]. Zhonghua Yi Xue Za Zhi 2019; 99:1468-1472. [PMID: 31137136 DOI: 10.3760/cma.j.issn.0376-2491.2019.19.007] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the changes in signal intensity (SI) ratios of globus pallidus (GP) on unenhanced T(1)-weighted(T(1)WI)magnetic resonance imaging (MRI) scans between the first and last MRI using the linear gadolinium-based contrast agent (GBCAs) intravenously. Methods: Clinical and imaging data of 114 patients who underwent at least 4 consecutive enhanced MRI examinations at the Affiliated Hospital of Xuzhou Medical University between January 2016 and April 2018 were analyzed. The SI ratio of GP, thalamus and cerebrospinal fluid (CSF) were measured on unenhanced T(1)WI. The GP to thalamus SI ratio was calculated by dividing the SI in the GP by that in the thalamus, and so was the GP to CSF SI ratio. The difference of SI ratio in the same patient was analyzed by nonparametric tests, linear regression analysis was used to analyze clinical factors. Results: The SI ratio of GP-to-thalamus and GP-to-CSF after multiple enhancement were higher than before, and the difference was statistically significant. The SI ratio of GP-to-thalamus and GP-to-CSF before and after repeated contrast-enhanced were 1.036(1.010, 1.075), 1.104(1.074, 1.168); 4.215(3.590, 5.614), 5.409(4.213, 6.502), all P<0.01. The SI ratio differences showed a significant positive correlation with the number of enhanced examination(pons:b=0.023, P<0.01,CSF:b=0.279,P=0.034), and a significant negative correlation with the interval (pons: b=-0.002,P< 0.01, CSF: b=-0.023, P=0.039). There was no correlation with other clinical factors (all P>0.05). Conclusions: There is an increase in SI in the GP after serial injections of linear GBCAs, and there is a positive correlation with the times of enhanced examination, and a negative correlation with time interval.
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Affiliation(s)
- Y Kong
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - K Xu
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - X C Ye
- Department of Neurology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - C P Han
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - M S Li
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - Z D Chen
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
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Zhao T, Xiao H, Ge W, Zhong Q, Yu J, Li M, Li J, Fan Z. Light-emitting-diode-pumped active Q-switched Nd:YLF laser. Opt Lett 2019; 44:1956-1959. [PMID: 30985784 DOI: 10.1364/ol.44.001956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 02/13/2019] [Indexed: 06/09/2023]
Abstract
An active Q-switching light-emitting diode (LED)-pumped laser is demonstrated by Nd:YLF crystal with acousto-optic modulation for the first time. The spectrum-band pump characteristic is grasped to describe the essential difference between an LED pump and single-absorption-peak matching of laser-diode pump or no matching of lamp pump. An effective absorption spectrum concept is proposed to characterize the absorption features of the gain material with LED-band pumping. According to this new theory, a flat-top beam profile is designed for pumping Nd:YLF crystal with only a 14 W/cm2 peak power, resulting in 165 μJ output energy at 1047 nm. More importantly, by using the acousto-optic Q-switching technique, this LED-pumped Nd:YLF laser has successfully realized a TEM00 mode output with a pulse energy of 10.6 μJ and a pulse width of 452 ns.
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Zhang Y, Song LZ, Liu GF, Li MS, Lin XJ, Xu AQ. [Analysis of current epidemiological and clinical characteristics for laboratory confirmed epidemic cerebrospinal meningitis cases in Shandong Province, 2007-2016]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:169-173. [PMID: 30744291 DOI: 10.3760/cma.j.issn.0253-9624.2019.02.009] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze epidemiological and clinical characteristics of laboratory confirmed epidemic cerebrospinal meningitis cases. Methods: Epidemiological and clinical informations and cerebrospinal fluid (CSF) and blood specimens of AMES (acute meningitis/encephalitis syndrome) cases were collected in the six sentinel hospitals from 2007 to 2016. neisseria meningitides (Nm) species and serogroup identification were detected by the methods of real-time fluorescent quantitative polymerase chain reaction (Real-time PCR) and bacterial culture, and epidemiological and clinical characteristics of laboratory confirmed epidemic cerebrospinal meningitis cases were analyzed. Results: 6 809 AMES cases were reported from 2007 to 2016. Total 4 422 cases were detected, and 90 cases were Nm positive. Through the methods of Real-time PCR, bacterial blood culture and CSF culture, the numbers of Nm positive cases were 90, 2 and 1 respectively. Twenty-two Nm cases were identified from 2007 to 2011 (4 cases were ungrouped), which with the highest incidence in serogroup C cases (17/18), and one cases was ungroupable Nm. Nm laboratory confirmed cases (68 cases) were increased dramatically and mainly occurred in serogroup B cases (43/67, 64.2%) from 2012 to 2016, with serogroup C cases highly decreased (5/67, 7.5%) and ungroupable Nm cases increased (13/67, 19.4%) meanwhile. Serogroup W135 and X cases were first detected at 2012 and 2014, and serogroup A remaining a low level which only detected one case at 2013. The morbidity of epidemic cerebrospinal meningitis was occured in the whole year, and mainly in winter and spring. The ratio of Nm laboratory confirmed cases to AMES cases during November to May (3.5%, 67/1 920) was higher than that during June to October (0.9%, 23/2 502) (χ(2)=34.45, P<0.001). Most Nm cases were children, students and farmers, and account for 30.0% (27/90), 31.1% (28/90), 18.9% (17/90), respectively. The majority of Nm cases were under 20 years old (60/90, 66.67%), and serogroup C cases (17/22, 77.3%) mainly occurred in over 12 years old population, while serogroup B (24/43, 55.8%) and ungroupable (6/14) cases mainly occurred in under 12 years old population. The main clinical symptoms of epidemic cerebrospinal meningitis cases were fever (78/90, 86.7%), headache (59/90, 65.6%) and vomiting (51/90, 56.7%). Misdiagnosis rate of admitting diagnosis was up to 87.8% (79/90) for the reason of atypical features in specific symptoms and blood or CSF positive index. The well-healed ratio in correct diagnosed group (7/11) was higher than that in misdiagnosed group (2.5%, 2/79) (χ(2)=40.61, P<0.001). Conclusion: The clinical symptoms of epidemic cerebrospinal meningitis cases were atypical, and the diagnosed sensitivity and accuracy would be improved by enhanced molecular biology detection. The predominant epidemic serogroup of Nm switched from serogroup C to B, and the key work was surveaylance of serogroup transition.
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Affiliation(s)
- Y Zhang
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention; Academy of Preventive Medicine, Shandong University; Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
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Li M, Liu Y, Zhang X, Liu J, Wang P. Transcriptomic analysis of high-throughput sequencing about circRNA, lncRNA and mRNA in bladder cancer. Gene 2018; 677:189-197. [PMID: 30025927 DOI: 10.1016/j.gene.2018.07.041] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/13/2018] [Accepted: 07/13/2018] [Indexed: 12/19/2022]
Abstract
An increasing number of studies have revealed that long noncoding RNA (lncRNA) and circular RNA (circRNA) participate in the carcinogenesis and progression of tumors. However, most of these noncoding RNAs are of unknown function or without annotation. We carried out high-throughput sequencing to investigate the differential expression of lncRNAs and circRNAs and their biological functions in four coupled bladder cancer and adjacent noncancerous tissues. We identified significant differentially expressed transcripts and genes and acquired their annotations from the RefSeq and circBase databases, then confirmed the expression of randomly selected RNAs with quantitative real-time PCR. We also constructed a coding-noncoding co-expression (CNC) network and a competing endogenous RNA (ceRNA) network to predict the functions of these RNAs using well-studied protein-coding mRNA. Compared with adjacent tissues, 56 lncRNAs, 34 circRNAs and 467 protein-coding mRNAs were upregulated while 32 lncRNAs, 84 circRNAs and 326 protein-coding mRNAs were downregulated in cancer tissues. Co-expression analysis showed that expression of LINC00885 were correlated with GATA3 expression. The ceRNA network indicated that lncRNA MIR194-2HG, AATBC and circRNA PGM5 could harbor bladder cancer-related microRNA (miRNA) recognition elements. We performed gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis to ascertain the biological function of significantly dysregulated genes. Cell cycle and cell division pathways related to proliferation and apoptosis were obvious in enriched terms. Comprehensive analysis indicated that the dysregulated lncRNAs and circRNAs could participate in the genesis and progression of bladder cancer. Our approach may therefore be valuable for detecting novel transcripts, discovering new biomarkers for bladder cancer and expounding the pathogenic mechanisms of this disease.
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Affiliation(s)
- Mingshan Li
- The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China
| | - Yili Liu
- The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China
| | - Xiling Zhang
- The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China
| | - Jie Liu
- Science Experiment Center of China Medical University, Shenyang 110122, China
| | - Ping Wang
- The Fourth Affiliated Hospital of China Medical University, Shenyang 110032, China.
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Zheng LM, Wang XR, Lü WM, Li CJ, Paudel TR, Liu ZQ, Huang Z, Zeng SW, Han K, Chen ZH, Qiu XP, Li MS, Yang S, Yang B, Chisholm MF, Martin LW, Pennycook SJ, Tsymbal EY, Coey JMD, Cao WW. Ambipolar ferromagnetism by electrostatic doping of a manganite. Nat Commun 2018; 9:1897. [PMID: 29765044 PMCID: PMC5953920 DOI: 10.1038/s41467-018-04233-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [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: 10/03/2017] [Accepted: 04/12/2018] [Indexed: 11/09/2022] Open
Abstract
Complex-oxide materials exhibit physical properties that involve the interplay of charge and spin degrees of freedom. However, an ambipolar oxide that is able to exhibit both electron-doped and hole-doped ferromagnetism in the same material has proved elusive. Here we report ambipolar ferromagnetism in LaMnO3, with electron-hole asymmetry of the ferromagnetic order. Starting from an undoped atomically thin LaMnO3 film, we electrostatically dope the material with electrons or holes according to the polarity of a voltage applied across an ionic liquid gate. Magnetotransport characterization reveals that an increase of either electron-doping or hole-doping induced ferromagnetic order in this antiferromagnetic compound, and leads to an insulator-to-metal transition with colossal magnetoresistance showing electron-hole asymmetry. These findings are supported by density functional theory calculations, showing that strengthening of the inter-plane ferromagnetic exchange interaction is the origin of the ambipolar ferromagnetism. The result raises the prospect of exploiting ambipolar magnetic functionality in strongly correlated electron systems.
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Affiliation(s)
- L M Zheng
- Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology, Harbin, 150081, China
| | - X Renshaw Wang
- School of Physical and Mathematical Sciences & School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
| | - W M Lü
- Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology, Harbin, 150081, China.
| | - C J Li
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - T R Paudel
- Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska, 68588, USA
| | - Z Q Liu
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Z Huang
- NUSNNI-NanoCore, National University of Singapore, Singapore, 117411, Singapore
| | - S W Zeng
- NUSNNI-NanoCore, National University of Singapore, Singapore, 117411, Singapore
| | - Kun Han
- NUSNNI-NanoCore, National University of Singapore, Singapore, 117411, Singapore
| | - Z H Chen
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, Guangzhou, 518055, China
| | - X P Qiu
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology & Pohl Institute of Solid State Physics & School of Physics Science and Engineering, Tongji University, Shanghai, 200092, China
| | - M S Li
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Shize Yang
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - B Yang
- Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology, Harbin, 150081, China
| | - Matthew F Chisholm
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - L W Martin
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - S J Pennycook
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - E Y Tsymbal
- Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska, 68588, USA
| | - J M D Coey
- School of Physics, Trinity College, Dublin, 2, Ireland.,Faculty of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - W W Cao
- Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology, Harbin, 150081, China.,Department of Mathematics and Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
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Kang Z, Fan Z, Huang Y, Zhang H, Ge W, Li M, Yan X, Zhang G. High-repetition-rate, high-pulse-energy, and high-beam-quality laser system using an ultraclean closed-type SBS-PCM. Opt Express 2018; 26:6560-6571. [PMID: 29609344 DOI: 10.1364/oe.26.006560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 02/14/2018] [Indexed: 06/08/2023]
Abstract
We present a high-repetition-rate, high-pulse-energy, high-beam-quality, and high-average-power laser system using an ultraclean closed-type stimulated-Brillouin-scattering phase-conjugate mirror (SBS-PCM). By controlling microparticles of SBS-PCM down to 40 nm, thermal load capacity of such closed-type SBS-PCM was greatly improved, which presented the best reported cleanliness. The closed-type SBS-PCM, lacking scanning wedge plates, achieved reflectivity as high as 92% and showed no optical breakdown phenomena or obvious thermal effects at a 500 Hz pulse-repetition frequency (PRF). Operation at 550 W output power, approximately 1.1 J pulse energy, and beam quality M2 of approximately 2 represents, to our knowledge, the best reported performance. Thermal phase distortion was compensated, and the maximum-output-power pulse-width compression improved from 30 ns to approximately 10 ns.
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Souza ELS, Sczancoski JC, Nogueira IC, Almeida MAP, Orlandi MO, Li MS, Luz RAS, Filho MGR, Longo E, Cavalcante LS. Structural evolution, growth mechanism and photoluminescence properties of CuWO 4 nanocrystals. Ultrason Sonochem 2017; 38:256-270. [PMID: 28633825 DOI: 10.1016/j.ultsonch.2017.03.007] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/06/2017] [Accepted: 03/06/2017] [Indexed: 05/27/2023]
Abstract
Copper tungstate (CuWO4) crystals were synthesized by the sonochemistry (SC) method, and then, heat treated in a conventional furnace at different temperatures for 1h. The structural evolution, growth mechanism and photoluminescence (PL) properties of these crystals were thoroughly investigated. X-ray diffraction patterns, micro-Raman spectra and Fourier transformed infrared spectra indicated that crystals heat treated and 100°C and 200°C have water molecules in their lattice (copper tungstate dihydrate (CuWO4·2H2O) with monoclinic structure), when the crystals are calcinated at 300°C have the presence of two phase (CuWO4·2H2O and CuWO4), while the others heat treated at 400°C and 500°C have a single CuWO4 triclinic structure. Field emission scanning electron microscopy revealed a change in the morphological features of these crystals with the increase of the heat treatment temperature. Transmission electron microscopy (TEM), high resolution-TEM images and selected area electron diffraction were employed to examine the shape, size and structure of these crystals. Ultraviolet-Visible spectra evidenced a decrease of band gap values with the increase of the temperature, which were correlated with the reduction of intermediary energy levels within the band gap. The intense photoluminescence (PL) emission was detected for the sample heat treat at 300°C for 1h, which have a mixture of CuWO4·2H2O and CuWO4 phases. Therefore, there is a synergic effect between the intermediary energy levels arising from these two phases during the electronic transitions responsible for PL emissions.
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Affiliation(s)
- E L S Souza
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil
| | - J C Sczancoski
- DQ-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, São Carlos, SP 13565-905, Brazil
| | - I C Nogueira
- ICE-Universidade Federal do Amazonas, Av. Rodrigo Otávio Japiim, P.O. Box 670, 69077-000 Manaus, AM, Brazil
| | - M A P Almeida
- CCT-Universidade Federal do Maranhão, P.O. Box 322, 65080-805 São Luís, MA, Brazil
| | - M O Orlandi
- Departamento de Físico-Química, Universidade Estadual Paulista, 14800-060 Araraquara, SP, Brazil
| | - M S Li
- IFSC-Universidade de São Paulo, P.O. Box 369, 13560-970 São Carlos, SP, Brazil
| | - R A S Luz
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil
| | - M G R Filho
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil
| | - E Longo
- Departamento de Físico-Química, Universidade Estadual Paulista, 14800-060 Araraquara, SP, Brazil
| | - L S Cavalcante
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil.
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Abstract
RATIONALE Metastasis of cancer cells involves shedding from the primary tumor through various means to distant tissues and organs with continued growth and formation of new metastatic tumors of the same cancer type as the original tumor. The common sites for colon cancer metastases include the pelvis, retroperitoneal lymph nodes, liver, and lungs; Colon cancer metastases to the appendix are rare, as reported in this case. PATIENT CONCERNS AND DIAGNOSES A 45-year-old man was admitted to our department with a 24-hour history of abdominal distension and incomplete obstruction. Colonoscopy showed an elevated lesion in the ascending colon and the pathologic diagnosis was adenocarcinoma. INTERVENTIONS AND OUTCOMES This patient underwent a radical right hemi-colectomy. The post-operative pathologic examination revealed metastatic adenocarcinoma in all layers of the appendix, especially the muscularis mucosae. The diagnosis was adenocarcinoma of the ascending colon (pT4bN2bM0 stage IIIC) with metastatic adenocarcinoma of the appendix. LESSONS An absent right colic artery with lymph node fusion might increase the risk of appendiceal cancer metastasis.
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Li ZY, Li MS, Yu JL, Lin LL, Zhang JY. [Correlation between estrogen receptorα 36 and HER2 expression]. Zhonghua Bing Li Xue Za Zhi 2016; 45:648-649. [PMID: 27646898 DOI: 10.3760/cma.j.issn.0529-5807.2016.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Kimmoun O, Hsu HC, Branger H, Li MS, Chen YY, Kharif C, Onorato M, Kelleher EJR, Kibler B, Akhmediev N, Chabchoub A. Modulation Instability and Phase-Shifted Fermi-Pasta-Ulam Recurrence. Sci Rep 2016; 6:28516. [PMID: 27436005 PMCID: PMC4951648 DOI: 10.1038/srep28516] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 03/11/2016] [Accepted: 05/20/2016] [Indexed: 11/09/2022] Open
Abstract
Instabilities are common phenomena frequently observed in nature, sometimes leading to unexpected catastrophes and disasters in seemingly normal conditions. One prominent form of instability in a distributed system is its response to a harmonic modulation. Such instability has special names in various branches of physics and is generally known as modulation instability (MI). The MI leads to a growth-decay cycle of unstable waves and is therefore related to Fermi-Pasta-Ulam (FPU) recurrence since breather solutions of the nonlinear Schrödinger equation (NLSE) are known to accurately describe growth and decay of modulationally unstable waves in conservative systems. Here, we report theoretical, numerical and experimental evidence of the effect of dissipation on FPU cycles in a super wave tank, namely their shift in a determined order. In showing that ideal NLSE breather solutions can describe such dissipative nonlinear dynamics, our results may impact the interpretation of a wide range of new physics scenarios.
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Affiliation(s)
- O Kimmoun
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - H C Hsu
- Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan
| | - H Branger
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - M S Li
- Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan
| | - Y Y Chen
- Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan
| | - C Kharif
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - M Onorato
- Dipartimento di Fisica Generale, Universita degli Studi di Torino, Torino, Italy
| | - E J R Kelleher
- Femtosecond Optics Group, Department of Physics, Imperial College London, London, UK
| | - B Kibler
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS UBFC, Dijon, France
| | - N Akhmediev
- Optical Sciences Group, Research School of Physics and Engineering, Institute of Advanced Studies, The Australian National University, Canberra ACT 020, Australia
| | - A Chabchoub
- Department of Ocean Technology Policy and Environment, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8563, Japan.,Department of Mechanical Engineering, Aalto University, 02150 Espoo, Finland
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