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Marsico C, Grimm JR, Renteria C, Guillen DP, Tang K, Nikitin V, Arola DD. Characterizing the microstructures of mammalian enamel by synchrotron phase contrast microCT. Acta Biomater 2024; 178:208-220. [PMID: 38428512 DOI: 10.1016/j.actbio.2024.02.038] [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: 12/26/2023] [Revised: 02/08/2024] [Accepted: 02/23/2024] [Indexed: 03/03/2024]
Abstract
The enamel of mammalian teeth is a highly mineralized tissue that must endure a lifetime of cyclic contact and is inspiring the development of next-generation engineering materials. Attempts to implement enamel-inspired structures in synthetic materials have had limited success, largely due to the absence of a detailed understanding of its microstructure. The present work used synchrotron phase-contrast microCT imaging to evaluate the three-dimensional microstructure of enamel from four mammals including Lion, Gray Wolf, Snow Leopard, and Black Bear. Quantitative results of image analysis revealed that the decussation pattern of enamel consists of discrete diazone (D) and parazone (P) bands of rods organized with stacking arrangement of D+/P/D-/P in all mammals evaluated; the D+ and D- refer to distinct diazone bands with juxtaposed rod orientations from the reference plane. Furthermore, the rod orientations in the bands can be described in terms of two principal angles, defined here as the pitch and yaw. While the pitch angle increases from the outer enamel to a maximum (up to ≈ 40°) near the dentin enamel junction, minimal spatial variations are observed in yaw across the enamel thickness. There are clear differences in the decussation parameters of enamel across species that are interpreted here with respect to the structural demands placed on their teeth. The rod pitch and band width of enamel are identified as important design parameters and appear to be correlated with the bite force quotient of the four mammals evaluated. STATEMENT OF SIGNIFICANCE: The multi-functionality of tooth enamel requires both hardness and resistance to fracture, properties that are generally mutually exclusive. Ubiquitous to all mammalian teeth, the enamel is expected to have undergone adaptations in microstructure to accommodate the differences in diet, body size and bite force across animals. For the first time, we compare the complex three-dimensional microstructure of enamel from teeth of multiple mammalian species using synchrotron micro-computed tomography. The findings provide new understanding of the "design" of mammalian enamel microstructures, as well as how specific parameters associated with the decussation of rods appear to be engineered to modulate its fracture resistance.
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Affiliation(s)
- C Marsico
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA; Materials Science and Engineering Department, Idaho National Laboratory, Idaho Falls, ID, USA
| | - J R Grimm
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA; Physical and Computational Science Directorate, Pacific Northwest National Laboratory, Richland, WA, USA
| | - C Renteria
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA; Department of Oral Health Sciences, University of Washington, Seattle, WA, USA
| | - D P Guillen
- Materials Science and Engineering Department, Idaho National Laboratory, Idaho Falls, ID, USA
| | - K Tang
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA
| | - V Nikitin
- Department of Chemistry, Argonne National Laboratory, Lemond, IL, USA
| | - D D Arola
- Department of Materials Science and Engineering, University of Washington, Seattle, WA, USA; Department of Restorative Dentistry, School of Dentistry, University of Washington, Seattle, WA, USA; Department of Mechanical Engineering, University of Washington, Seattle, WA, USA.
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Yin Q, Zhou Q, Hu J, Weng J, Liu S, Yin L, Long L, Tong Y, Tang K, Bai S, Ou L. Fabrication of bimetallic Ag@ZnO nanocomposite and its anti-cancer activity on cervical cancer via impeding PI3K/AKT/mTOR pathway. J Trace Elem Med Biol 2024; 84:127437. [PMID: 38564977 DOI: 10.1016/j.jtemb.2024.127437] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/15/2024] [Accepted: 03/18/2024] [Indexed: 04/04/2024]
Abstract
INTRODUCTION Bimetallic nanoparticles, specifically Zinc oxide (ZnO) and Silver (Ag), continue to much outperform other nanoparticles investigated for a variety of biological uses in the field of cancer therapy. This study introduces biosynthesis of bimetallic silver/zinc oxide nanocomposites (Ag@ZnO NCs) using the Crocus sativus extract and evaluates their anti-cancer properties against cervical cancer. METHODS The process of generating bimetallic nanoparticles (NPs), namely Ag@ZnO NCs, through the utilization of Crocus sativus extract proved to be uncomplicated and eco-friendly. Various methods, such as UV-vis, DLS, FTIR, EDX, and SEM analyses, were utilized to characterize the generated Ag@ZnO NCs. The MTT assay was employed to assess the cytotoxic properties of biosynthesized bimetallic Ag@ZnO NCs against the HeLa cervical cancer cell line. Moreover, the impact of Ag@ZnO NCs on HeLa cells was assessed by examining cell survival, ROS production, MMP levels, and induced apoptosis. Through western blot analysis, the expression levels of the PI3K, AKT, mTOR, Cyclin D, and CDK proteins seemed to be ascertained. Using flow cytometry, the cancer cells' progression through necrosis and apoptosis, in addition to the cell cycle analysis, were investigated. RESULTS Bimetallic Ag@ZnO NCs that were biosynthesized showed a high degree of stability, as demonstrated by the physicochemical assessments. The median size of the particles in these NCs was approximately 80-90 nm, and their zeta potential was -14.70 mV. AgNPs and ZnO were found, according to EDX data. Further, Ag@ZnO NCs hold promise as a potential treatment for cervical cancer. After 24 hours of treatment, a dosage of 5 µg/mL or higher resulted in a maximum inhibitory effect of 58 ± 2.9. The concurrent application of Ag/ZnO NPs to HeLa cells resulted in elevated apoptotic signals and a significant generation of reactive oxygen species (ROS). As a result, the bimettalic Ag@ZnO NCs treatment has been recognized as a chemotherapeutic intervention by inhibiting the production of PI3K, AKT, and mTOR-mediated regulation of propagation and cell cycle-regulating proteins. CONCLUSIONS The research yielded important insights into the cytotoxic etiology of biosynthesized bimetallic Ag@ZnO NCs against HeLa cells. The biosynthesized bimetallic Ag@ZnO NCs have a significant antitumor potential, which appears to be associated with the development of oxidative stress, which inhibits the development of the cell cycle and the proliferation of cells. Therefore, in the future, biosynthesized bimetallic Ag@ZnO NCs may be used as a powerful anticancer drug to treat cervical cancer.
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Affiliation(s)
- Qinghua Yin
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China.
| | - Qiang Zhou
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
| | - Jianbing Hu
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
| | - Jie Weng
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
| | - Songlian Liu
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
| | - Leilan Yin
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
| | - Ling Long
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
| | - Yajun Tong
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
| | - Kewei Tang
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
| | - Site Bai
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
| | - Ludi Ou
- Department of Oncology, Yueyang Central Hospital, Yueyang, Hunan 414000, China
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Tang K, Wang F, Dai SQ, Yang ZY, Duan LY, Luo ML, Tay FR, Niu LN, Zhou W, Chen JH. Enhanced Bonding to Caries-Affected Dentin Using an Isocyanate-Based Primer. J Dent Res 2023; 102:1444-1451. [PMID: 37950512 DOI: 10.1177/00220345231199416] [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] [Indexed: 11/12/2023] Open
Abstract
Dental caries is the most common oral disease and the most common cause of resin restorations. In minimally invasive dentistry, the principle behind cavity preparation is to remove external caries-infected dentin (CID) and preserve internal caries-affected dentin (CAD) and sound dentin (SD). The cavity floor is mainly composed of CAD, but the poor bonding performance of CAD has become a widespread concern. This study evaluated the performance of a new collagen-reactive monomer (ITCM) used as a primer to improve the bonding performance of CAD. The experimental specimens were grouped as follows: SD, CAD, and ITCM-pretreated CAD (CAD-ITCM). Dentin slices were obtained for attenuated total reflectance-Fourier transform infrared (ATR-FTIR) analysis. The bonded samples were subjected to microtensile bond strength analysis after 24 h of water storage or aging by thermocycling, and the bonding interface quality was evaluated by nanoleakage assessment, interfacial nanoindentation testing, and in situ zymography. Cytotoxicity experiments with ITCM were performed. ATR-FTIR showed that the isocyanate groups in ITCM can covalently bind and form hydrogen bonds with the collagen in CAD to mediate chemical bonding. ITCM pretreatment significantly improved the bond strength of CAD (P < 0.05), reduced interfacial nanoleakage, improved the sealing of the bonding interface, enhanced the homogeneity of the hybrid layer, and inhibited matrix metalloproteinase activity. In addition, ITCM presented acceptable biocompatibility for dental restorative application. Taken together, this study reported the application of ITCM to induce collagen-based chemical bonding in the CAD bonding system, which fills the gap in strategies to improve the bonding performance of CAD immediately and after aging and has important clinical application prospects.
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Affiliation(s)
- K Tang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - F Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - S Q Dai
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Z Y Yang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - L Y Duan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - M L Luo
- Institute of Stomatology & Oral Maxilla Facial Key Laboratory, The First Medical Center, Chinese PLA General Hospital & Department of Stomatology, The First Medical Center, Chinese PLA General Hospital, Xi'an, Beijing, China
| | - F R Tay
- The Dental College of Georgia, Augusta University, Augusta, GA, USA
| | - L N Niu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - W Zhou
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - J H Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
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Li J, Guo ZB, Tang K, Wan XL, Yang Y, Ni HJ, Zhu MH, Guo FL, Liu WH. [Clinical outcomes of endovascular therapy in acute stroke patients with anterior circulation tandem occlusions due to atherosclerosis and dissection]. Zhonghua Nei Ke Za Zhi 2023; 62:1317-1322. [PMID: 37935498 DOI: 10.3760/cma.j.cn112138-20230121-00032] [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: 11/09/2023]
Abstract
Objective: To compare the clinical outcomes of endovascular therapy in acute stroke patients with anterior circulation tandem occlusions caused by atherosclerosis or dissection. Methods: A retrospective cohort study. A total of 98 patients with anterior circulation tandem lesions undergoing endovascular therapy in the Wuhan NO.1 Hospital (March 2016 to March 2022) were analyzed. Median age was 64(55,71) years old, and 82.7% (81/98 cases) were males. According to the lesion etiology, the patients were divided into atherosclerosis and dissection groups. The differences in clinical outcomes between the two groups were investigated, including favorable 90-day functional outcome (modified Rankin Scale score of 0-2), successful reperfusion (modified Thrombolysis in Cerebrovascular Infarction score of 2b-3), symptomatic intracranial hemorrhage, stroke-associated pneumonia, 90-day all-cause mortality, and average hospitalization days. Logistic regression analysis was used to adjust for potential confounders affecting functional outcomes in both groups, and to determine odds ratios and 95% confidence intervals. Results: Seventy-one patients were grouped into the atherosclerotic cause and 27 into the dissection cause cohorts. The rate of favorable 90-day functional outcome was 43.7% (31/71 cases) in the atherosclerosis group versus 55.6% (15/27 cases) in the dissection group (adjusted odds ratio=1.339; 95% confidence interval, 0.374-4.798; P=0.654). No significant differences were found in other clinical outcomes between the two groups (all P>0.05). Conclusion: The clinical prognosis of patients with tandem lesions caused by atherosclerotic stenosis or artery dissection was similar after endovascular therapy. Future studies are still needed to verify our results.
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Affiliation(s)
- J Li
- Department of Neurology, Wuhan No.1 Hospital, Wuhan 430022, China
| | - Z B Guo
- Department of Neurology, Wuhan No.1 Hospital, Wuhan 430022, China
| | - K Tang
- Department of Neurology, Wuhan No.1 Hospital, Wuhan 430022, China
| | - X L Wan
- Department of Neurology, Wuhan No.1 Hospital, Wuhan 430022, China
| | - Y Yang
- Department of Neurology, Wuhan No.1 Hospital, Wuhan 430022, China
| | - H J Ni
- Department of Neurology, Wuhan No.1 Hospital, Wuhan 430022, China
| | - M H Zhu
- Department of Neurology, Wuhan No.1 Hospital, Wuhan 430022, China
| | - F L Guo
- Department of Neurology, Wuhan No.1 Hospital, Wuhan 430022, China
| | - W H Liu
- Department of Neurology, Wuhan No.1 Hospital, Wuhan 430022, China
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Tang K, Lu XZ, Bi HS. [The progress of clinical research and treatment of monocular elevation deficiency]. Zhonghua Yan Ke Za Zhi 2023; 59:764-769. [PMID: 37670662 DOI: 10.3760/cma.j.cn112142-20221102-00558] [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: 09/07/2023]
Abstract
Monocular elevation deficiency (MED) is a functional defect in upward eye movement caused by paralysis, restriction, or a combination of factors. The affected eye experiences limited movement in the upward, nasal, and temporal directions, often accompanied by downward deviation and ptosis. Previously known as double elevator palsy (DEP), MED can result from muscle paralysis responsible for upward movement, restriction of the inferior rectus muscle, or lesions in the supranuclear pathway. The Knapp procedure was once the most commonly used surgical approach for MED. However, in cases involving restriction of the inferior rectus muscle, a staged approach combining inferior rectus muscle weakening and subsequent Knapp procedure is necessary to avoid anterior segment ischemia. This has led to the development of alternative surgical techniques, such as single-rectus muscle transposition, partial tendon transposition, and muscle belly transposition. Differentiating MED subtypes based on the underlying paralysis or restriction etiology is crucial for determining the appropriate surgical plan. This review article summarizes the clinical features, classification, and available surgical options for MED, aiming to provide valuable insights for clinical research and treatment.
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Affiliation(s)
- K Tang
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Shandong Engineering Technology Research Center of Visual Intelligence, Shandong Provincial Key Laboratory of Integrative Medicine for Prevention and Therapy of Ocular Disease, Jinan 250002, China
| | - X Z Lu
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Shandong Engineering Technology Research Center of Visual Intelligence, Shandong Provincial Key Laboratory of Integrative Medicine for Prevention and Therapy of Ocular Disease, Jinan 250002, China
| | - H S Bi
- Affiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Shandong Engineering Technology Research Center of Visual Intelligence, Shandong Provincial Key Laboratory of Integrative Medicine for Prevention and Therapy of Ocular Disease, Jinan 250002, China
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Duan R, Qi W, Li P, Tang K, Ru G, Liu W. A High-Performance MoS 2-Based Visible-Near-Infrared Photodetector from Gateless Photogating Effect Induced by Nickel Nanoparticles. Research (Wash D C) 2023; 6:0195. [PMID: 37456932 PMCID: PMC10348407 DOI: 10.34133/research.0195] [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] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 06/25/2023] [Indexed: 07/18/2023]
Abstract
Recent advancements in two-dimensional materials have shown huge potential for optoelectronic applications. It is challenging to achieve highly effective and sensitive broadband photodetection based on MoS2 devices. Defect engineering, such as introducing vacancies, can narrow the bandgap and boost the separation of photogenerated carriers by defect states but leads to a slow response speed. Herein, we propose a nickel nanoparticle-induced gateless photogating effect with a unique energy band structure to enable the application of defect engineering and achieve high optoelectronic performance. The device based on Ni nanoparticle-decorated MoS2 with S vacancies exhibited high responsivities of 106.21 and 1.38 A W-1 and detectivities of 1.9 × 1012 and 8.9 × 109 Jones under 532 and 980 nm illumination (visible to near infrared), respectively, with highly accelerated response speed. This strategy provides new insight into optimizing defect engineering to design high-performance optoelectronic devices capable of broadband photodetection.
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Affiliation(s)
- Ran Duan
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials,
Northwestern Polytechnical University, Xi’an 710072, China
| | - Weihong Qi
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials,
Northwestern Polytechnical University, Xi’an 710072, China
- Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing, Yantai 265503, China
| | - Panke Li
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials,
Northwestern Polytechnical University, Xi’an 710072, China
| | - Kewei Tang
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials,
Northwestern Polytechnical University, Xi’an 710072, China
| | - Guoliang Ru
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials,
Northwestern Polytechnical University, Xi’an 710072, China
| | - Weimin Liu
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials,
Northwestern Polytechnical University, Xi’an 710072, China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics,
Chinese Academy of Sciences, Lanzhou 730000, China
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Chockalingam Jnr R, Tang K, Chew K, Abdul Aziz Z, Loh J, Chao V, Tan T, Kerk K, Teo L, Sim D, Sivathasan C. A Retrospective Analysis of Concomitant Alfieri Stitch Mitral Valve Repair in Patients Undergoing Left Ventricular Assist Device Implantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
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Huang Y, Li J, Wang Q, Tang K, Cai X, Li C. Detection of carbapenem-resistant hypervirulent Klebsiella pneumoniae ST11-K64 co-producing NDM-1 and KPC-2 in a tertiary hospital in Wuhan. J Hosp Infect 2023; 131:70-80. [PMID: 36183928 DOI: 10.1016/j.jhin.2022.09.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/05/2022] [Accepted: 09/08/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND Carbapenem-resistant hypervirulent Klebsiella pneumoniae (CR-hvKP) poses serious challenges to public health. Only a few sporadic reports of strains co-producing NDM-1 and KPC-2 (NDM-1-KPC-2-CR-hvKP strains) are available to date. OBJECTIVES This retrospective study investigated the clinical features, prevalence and antibiotic resistance of hvKP in a tertiary hospital in central China, and characterized an NDM-1-KPC-2-CR-hvKP strain (KP169). METHODS Clinical data were collected. Antimicrobial and virulence-associated phenotyping and genotyping, capsular serotype gene analysis and multi-locus sequence typing of hvKP isolates were performed. Whole-genome sequencing (WGS) was performed on strain KP169. RESULTS Forty-five of 109 K. pneumoniae clinical isolates were hvKP. Of these, 37 originated from nosocomial infections and 24 expressed carbapenemases. Eight NDM-1-KPC-2-CR-hvKP strains were identified, and enterobacterial repetitive intergenic consensus polymerase chain reaction showed that they were clonally related. WGS revealed that strain KP169, which belongs to ST11-K64, had a single 5.5-Mb chromosome and six plasmids of 5.5-221.6 kb. The blaNDM-1 gene was located on plasmid pKP169-P3, and blaKPC-2, blaSHV-12 and blaTEM-1 were located on IncFII/IncR pKP169-P2. IncHI 1/IncFIB virulence plasmid pKP169-P1 was similar to pKPC-CR-hvKP-C789 plasmid reported previously. Plasmid stability testing showed that blaKPC-2- and blaNDM-1-harbouring plasmids were maintained stably in the host. CONCLUSION To the best of the authors' knowledge, this study identified the largest cohort, to date, of eight NDM-1-KPC-2-CR-hvKP strains, and suggests that antimicrobial stewardship and protocols to prevent transmission are needed urgently.
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Affiliation(s)
- Y Huang
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - J Li
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - Q Wang
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - K Tang
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China
| | - X Cai
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China.
| | - C Li
- Department of Clinical Laboratory, Renmin Hospital of Wuhan University, Wuhan, Hubei Province, China.
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Tavakoli P, Ledoux AA, Tang K, Robillard R, Richard-Malenfant C, Zemek R. Association between sleep changes and symptom recovery following pediatric concussion. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Cheng Y, Wang J, Yu Y, Zang A, Lv D, Li S, Cao L, Meng Z, Mao W, Zhang J, Liu A, Zhang Y, Tang K, Liu J, Zheng J, Wang Z, Chen E, Zhang X, Guo Q, Huang D. 103P Phase IIIb study of durvalumab plus platinum-etoposide in first-line treatment of Chinese extensive-stage small cell lung cancer (ORIENTAL): Preliminary safety and efficacy results. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Zhou Y, Ju JH, Tang K, Wang R, Zhou LP, Guo L, Yang L. [The regularity of sensory recovery after wound repair on the wrist and back of hand with anterolateral femoral flap without nerve anastomosis]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:1040-1046. [PMID: 36418261 DOI: 10.3760/cma.j.cn501120-20211014-00350] [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: 06/16/2023]
Abstract
Objective: To investigate the regularity of sensory recovery after repairing the wounds on the wrist and back of hand with anterolateral femoral flap without nerve anastomosis. Methods: A cross-sectional study was conducted. From January 2018 to December 2020, patients who underwent free anterolateral femoral flaps without nerve anastomosis to repair wounds on the wrist and back of hand and met the inclusion criteria in Changshu Hai Yu Health Centre and Suzhou Ruihua Orthopedic Hospital were included in this study. Depending on the time interval between the day of the patient's surgery and the day of the cross-sectional survey, 80 patients were divided into 6-month group (15 males and 5 females, aged 22-63 years), 12-month group (16 males and 4 females, aged 21-65 years), 18-month group (15 males and 5 females, aged 25-61 years), and 24-month group (14 males and 6 females, aged 20-65 years), with 20 patients in each group. The area of skin and soft tissue defects after debridement ranged from 6.0 cm×4.5 cm to 18.0 cm×9.0 cm. Anterolateral femoral flaps were cut with areas of 7 cm×5 cm to 20 cm×10 cm and a thickness of 1.0 to 2.5 cm. Each transplanted flap was divided into A (proximal), B/D (bilateral), C (distal), and E (central) regions. The pain sensation, touch sensation, cold sensation, warmth sensation, and two-point discrimination (2-PD) in the aforementioned five regions and the differences in the five senses of the whole flap were tested and compared. Data were statistically analyzed with one-way analysis of variance, Fisher's exact probability test, chi-square test, or McNemar test. Results: In A region of anterolateral femoral flap without nerve anastomosis, compared with those in 6-month group, the pain sensation, touch sensation, cold sensation, and warmth sensation of flap of patients in 12-month group were significantly recovered (with χ2 values of 10.10, 14.55, 12.13, and 4.29, respectively, P<0.05 or P<0.01); compared with that in 12-month group, the warmth sensation of flap of patients in 18-month group recovered significantly (χ2=5.23, P<0.05). In B region, compared with those in 6-month group, the pain sensation, touch sensation, and cold sensation of flap of patients in 12-month group recovered significantly (with χ2 values of 5.58, 3.96, and 4.29, respectively, P<0.05); compared with those in 12-month group, the pain sensation, touch sensation, cold sensation, and warmth sensation of flap of patients in 18-month group recovered significantly (with χ2 values of 5.58, 3.96, 7.03, and 12.38, respectively, P<0.05 or P<0.01). In C region, compared with that in 6-month group, the pain sensation of flap of patients in 12-month group recovered significantly (χ2=4.80, P<0.05); Compared with that in 12-month group, the warmth sensation of flap of patients in 18-month group recovered significantly (χ2=10.16, P<0.01). In D region, compared with those in 6-month group, the pain sensation, touch sensation, and cold sensation of flap of patients in 12-month group recovered significantly (with χ2 values of 5.58, 4.29, and 3.96, respectively, P<0.05); compared with those in 12-month group, the pain sensation, touch sensation, cold sensation, and warmth sensation of flap of patients in 18-month group recovered significantly (with χ2 values of 5.58, 4.29, 3.96, and 10.10, respectively, P<0.05 or P<0.01). In E region, compared with that in 6-month group, the cold sensation of flap of patients in 12-month group recovered significantly (χ2=4.80, P<0.05); compared with those in 12-month group, the pain sensation, touch sensation, and warmth sensation of flap of patients in 18-month group recovered significantly (with χ2 values of 6.47, 4.91, and 9.23, respectively, P<0.05 or P<0.01). The five senses in the 5 regions of flap of patients in 24-month group were similar to those in 18-month group (P>0.05). The recovery of 2-PD in the 5 regions of flap of patients was similar between the two adjacent groups (P>0.05). In 12-month group, the recoveries of pain sensation, touch sensation, and cold sensation of flap of patients in A region were better than those in the other 4 regions (P<0.05 or P<0.01), the recovery of warmth sensation was better than that of B region, C region, and E region (P<0.05 or P<0.01); in 18-month group, the recovery of pain sensation, touch sensation, cold sensation, and warmth sensation of flap of patients in A region of was better than those in area C region (P<0.05). Compared with those in 6-month group, the pain sensation, touch sensation, and cold sensation of the whole flap of patients in 12-month group recovered significantly (with χ2 values of 7.62, 7.03, and 5.58, respectively, P<0.05 or P<0.01). Compared with the 12-month group in which 10, 11, 10, and 4 patients had a recovery of pain, touch sensation, cold sensation, and warmth sensation in the whole flap, the 18-month group had significantly more patients with sensations recovered, which were 17, 17, 16, and 14, respectively (with χ2 values of 5.58, 4.29, 3.96, and 10.10, respectively, P<0.05 or P<0.01). The five senses of the whole flap of patients in 24-month group were similar to those in 18-month group (P>0.05). Conclusions: In the anterolateral femoral flap without nerve anastomosis for repairing wounds on the wrist and back of hand, the sensation gradually recovered from the proximal end to the distal end. The sensation of touch, pain, and cold began to recover from 6 months after operation, and entered the stable recover period at 18 months after operation. Warmth sensation began to recover from 12 months after operation, and entered the stable recovery period at 18 months after operation. The 2-PD of most flaps was still not recovered 2-year after operation.
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Affiliation(s)
- Y Zhou
- Changshu Hai Yu Health Centre, Changshu 215500, China
| | - J H Ju
- Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - K Tang
- Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - R Wang
- Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - L P Zhou
- Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - L Guo
- Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
| | - Liang Yang
- Suzhou Ruihua Orthopedic Hospital, Suzhou 215104, China
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Tang K, Tiu B, Wan G, Zhang S, Nguyen N, Leung B, Gusev A, Reynolds K, Kwatra S, Semenov Y. 214 Pre-existing cutaneous autoimmune disease may improve survival in patients treated with anti-PD-1 or anti-PD-L1 therapy: A population level cohort study. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Khan U, Tang K, Guo W, Perera H, Na S, Clark R. 164 Association between atopic dermatitis and celiac disease: A systematic review and meta-analysis. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kay J, Zeng X, Chen L, Tang K, Shi G, Liu L, Wu L, Liu Y, Hu J, Liu S, Yi Z, Kim SH, Bae Y, Suh J, Rhee S, Lee S, Hwang C. AB0339 EFFICACY, PHARMACOKINETICS AND SAFETY BETWEEN CT-P13 AND CHINA-APPROVED INFLIXIMAB: 54 WEEK RESULT FROM A PHASE III RANDOMIZED CONTROLLED TRIAL IN CHINESE PATIENTS WITH ACTIVE RHEUMATOID ARTHRITIS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1677] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundCT-P13 is an approved biosimilar to EU-approved and US-licensed Infliximab (INX) for the indications of rheumatoid arthritis (RA), adult and paediatric Crohn’s disease, adult and paediatric ulcerative colitis, ankylosing spondylitis, psoriatic arthritis and psoriasis.ObjectivesThe purpose of this study was to demonstrate equivalence of efficacy and compare PK and safety profiles of CT-P13 and China-approved INX.MethodsIn this randomized, double blinded, multicenter, parallel-group, phase III study, patients with active RA who had been responding inadequately to methotrexate for at least 3 months, were randomized to receive either CT-P13 or China-approved INX. Patients were treated with doses of 3 mg/kg at Weeks 0, 2, 6, then every 8 weeks up to Week 54. Prior to dosing at Week 30, patients randomized to China-approved INX underwent a second randomization either to continue China-approved INX or to switch to CT-P13 at Week 30. Results of patients who underwent transition to CT-P13 were included in the China-approved INX group. The primary efficacy endpoint was change in DAS28 (CRP) from baseline to Week 14, which was analyzed using an analysis of covariance. Equivalence was determined if the 90% CI for the estimate of treatment difference was entirely contained within the predefined equivalence margin of -0.6 to 0.6.Results270 patients were randomly assigned to 2 treatment groups in a 1:1 ratio (136 and 134 patients in the CT-P13 and China-approved INX groups, respectively) and 184 patients completed the study. The least square mean change (standard error) of DAS28 (CRP) from baseline to Week 14, -1.566 [0.1419] and -1.547 [0.1491], was similar between the CT-P13 and China-approved INX groups, respectively. The 90% CI for the estimate of treatment difference (-0.29, 0.25) was contained within the predefined equivalence margin, which demonstrated therapeutic equivalence between the groups. The mean actual values for DAS28 (CRP) decreased from baseline to Week 54 and were similar between the groups (Figure 1). Additional efficacy endpoints, including ACR responses (ACR20 at Week 14; 60.6%, 54.8% and at Week 54; 65.1%, 60.6% in the CT-P13 and China-approved INX groups, respectively), EULAR responses, CDAI, and SDAI, were similar between the groups, even after switching at Week 30. During the study, mean serum INX concentrations were similar between the groups. Between Weeks 14 and 22, mean (percent coefficient of variation) AUCτ were 11156333.615 (44.796) ng·h/mL and 11462884.280 (51.057) ng·h/mL, and Cmax,ss were 66577.2 (31.4) ng/mL and 66356.1 (21.0) ng/mL in the CT-P13 and China-approved INX groups, respectively, which were similar between the groups. Most treatment-emergent AEs were grade 1 or 2 in intensity. One malignancy was reported in the CT-P13 group and no deaths were reported. The proportions of patients with anti-drug antibodies were similar between the groups, even after switching at Week 30. The overall safety profile of CT-P13 was comparable to that of China-approved INX and no new safety issues were observed (Table 1).Table 1.Summary of Safety ResultsNumber of patients (%)CT-P13 (N=136)China-approved Infliximab (N=133)Treatment-emergent AEsTotal115 (84.6%)107 (80.5%)Related97 (71.3%)86 (64.7%)Treatment-emergent serious AEsTotal17 (12.5%)12 (9.0%)Related10 (7.4%)6 (4.5%)Infusion related reaction/ hypersensitivity/anaphylactic reactionsTotal(=Related)20 (14.7%)19 (14.3%)InfectionsTotal45 (33.1%)43 (32.3%)Related36 (26.5%)40 (30.1%)Note: Summary is presented for the safety population who received at least 1 dose (full or partial) of study drug.ConclusionThe study demonstrated that efficacy of CT-P13 is equivalent to that of China-approved INX. Also, the PK and safety profiles of CT-P13 were comparable to those of China-approved INX. No loss of efficacy or difference in safety or immunogenicity was observed after switching from China-approved INX to CT-P13 at Week 30.Disclosure of InterestsJonathan Kay Consultant of: Boehringer Ingelheim GmbH; Pfizer Inc.; Samsung Bioepis; Sandoz Inc., Grant/research support from: Pfizer Inc. (paid to UMass Chan Medical School), Xiaofeng Zeng Grant/research support from: Celltrion, Inc, Lin Chen Grant/research support from: Celltrion, Inc, Kaijiang Tang Grant/research support from: Celltrion, Inc, guixiu shi Grant/research support from: Celltrion, Inc, Lin Liu Grant/research support from: Celltrion, Inc, Lijun Wu Grant/research support from: Celltrion, Inc, Yi Liu Grant/research support from: Celltrion, Inc, Jiankang Hu Grant/research support from: Celltrion, Inc, Shengyun Liu Grant/research support from: Celltrion, Inc, Zheng Yi Grant/research support from: Celltrion, Inc, Sung Hyun Kim Employee of: Celltrion, Inc, YunJu Bae Employee of: Celltrion, Inc, JeeHye Suh Employee of: Celltrion, Inc, Seungjin Rhee Employee of: Celltrion, Inc, SeulGi Lee Employee of: Celltrion, Inc, Chankyoung Hwang Employee of: Celltrion, Inc
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Tsoumpris T, Tang K, Miele M, Acosta C. Rates of Post-Partum Psychosis in women with risk factors cared for by a specialist community perinatal mental health service in London. Eur Psychiatry 2022. [PMCID: PMC9567956 DOI: 10.1192/j.eurpsy.2022.2228] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Community Perinatal Mental Health Services
(CPMHS) have been established in the UK, however, there is limited research around their real-world effectiveness. Post-Partum Psychosis (PPP), a severe episode of affective psychosis usually occurring soon after birth, has known risk factors. CPMHS offer assessment and interventions for women with risk factors for PPP, with a view to reducing the risk of its occurrence, as well as, where necessary, to proactively manage the illness to minimise the impact on the mother-infant dyad, as well as associated risks to self and/or others. Objectives To review the rate of PPP in women with established risk factors, who were referred and managed by our CPMHS between September 2019-September 2021. This rate will be compared with the known rates of PPP reported in the literature. Rates of non-psychotic relapse, acute hospitalisation, children social care supervision and mother-infant separation as a result of postnatal relapse will be (amongst others) secondary outcomes. Perinatal interventions offered to reduce the risk of PPP and contingency planning will also be reviewed. Methods This will be a retrospective case review study involving women referred and cared for by our CPMHS from October 2019 to October 2021, with known risk factors for PPP. Women identified as high risk for PPP receive consultant led-care in our service, therefore cases will be identified via the individual caseloads. Subsequently, electronic case notes will be reviewed to determine the primary and secondary outcomes, as well as the perinatal interventions that were offered. Results To be reported. Conclusions To be reported. Disclosure No significant relationships.
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Zhao X, Tang K, Lee C, Du CF, Yu H, Wang X, Qi W, Ye Q, Yan Q. Promoting the Water-Reduction Kinetics and Alkali Tolerance of MoNi 4 Nanocrystals via a Mo 2 TiC 2 T x Induced Built-In Electric Field. Small 2022; 18:e2107541. [PMID: 35254002 DOI: 10.1002/smll.202107541] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 02/03/2022] [Indexed: 06/14/2023]
Abstract
Mo-Ni alloy-based electrocatalysts are regarded as promising candidates for the hydrogen evolution reaction (HER), despite their vulnerable stability in alkaline solution that hampers further application. Herein, Mo2 TiC2 Tx MXene, is employed as a support for MoNi4 alloy nanocrystals (NCs) to fabricate a unique nanoflower-like MoNi4 -MXn electrocatalyst. A remarkably strong built-in electric field is established at the interface of two components, which facilitates the electron transfer from Mo2 TiC2 Tx to MoNi4 . Due to the accumulation of electrons at the MoNi4 sites, the adsorption of the catalytic intermediates and ionic species on MoNi4 is affected consequently. As a result, the MoNi4 -MX10 nanohybrid exhibits the lowest overpotential, even lower than 10% Pt/C catalyst at the current density of 10 mA cm-2 in 1 m KOH solution (122.19 vs 129.07 mV, respectively). Furthermore, a lower Tafel slope of 55.88 mV dec-1 is reported as compared to that of the 10% Pt/C (65.64 mV dec-1 ). Additionally, the MoNi4 -MX10 catalyst also displays extraordinary chemical stability in alkaline solution, with an activity loss of only 0.15% per hour over 300 h of operation. This reflects the great potential of using MXene-based interfacial engineering for the synthesis of a highly efficient and stable electrocatalyst.
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Affiliation(s)
- Xiangyuan Zhao
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing, 400000, P. R. China
| | - Kewei Tang
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Carmen Lee
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Cheng-Feng Du
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing, 400000, P. R. China
| | - Hong Yu
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Xiaomei Wang
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
- Chongqing Technology Innovation Center, Northwestern Polytechnical University, Chongqing, 400000, P. R. China
| | - Weihong Qi
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Qian Ye
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China
| | - Qingyu Yan
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
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Zou S, Wang Z, Bhura M, Tang K. Association of multimorbidity of non-communicable diseases with mortality: a 10-year prospective study of 0.5 million Chinese adults. Public Health 2022; 205:63-71. [DOI: 10.1016/j.puhe.2022.01.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 01/11/2022] [Accepted: 01/21/2022] [Indexed: 10/19/2022]
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Tang K, Qi W, Wei Y, Ru G, Liu W. High-Throughput Calculation of Interlayer van der Waals Forces Validated with Experimental Measurements. Research 2022; 2022:9765121. [PMID: 35392429 PMCID: PMC8968625 DOI: 10.34133/2022/9765121] [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] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 02/21/2022] [Indexed: 11/16/2022]
Abstract
Interlayer van der Waals interactions play an important role in two-dimensional (2D) materials on various occasions. The interlayer binding force is often directly measured and is considered more closely related to the exfoliation condition. However, a binding force database from accurate theoretical calculations does not yet exist. In this work, the critical interlayer binding force and energy are directly calculated for 230 2D materials, which exhibit divergent trends. A linear relationship that links the two quantities with the equilibrium interlayer distance is found and checked. Experiments are carried out for three different materials using atomic force microscopy. The measured forces show a consistent trend with the calculated results, and the estimated binding strengths are of the same order of magnitude as the predicted values. Our work can provide a reliable reference for interlayer adhesion studies and help establish accurate models of exfoliation processes.
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Affiliation(s)
- Kewei Tang
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, China
| | - Weihong Qi
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, China
| | - Yaru Wei
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, China
| | - Guoliang Ru
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, China
| | - Weimin Liu
- State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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Yu L, Tang K, Rong Y, Li Z, Song X, Chen X, Song L. Clinical Application Analysis of Calcium Dobesilate Combined with Ranibizumab in Patients with Macular Edema Secondary to Branch Retinal Vein Occlusion. Indian J Pharm Sci 2022. [DOI: 10.36468/pharmaceutical-sciences.spl.449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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20
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Miao SL, Lin TT, Chen FF, Wang L, Zheng XW, Tang K. Association between low skeletal muscle mass and subclinical coronary atherosclerosis in asymptomatic individuals evaluated by CT. Clin Radiol 2021; 77:e162-e169. [PMID: 34852917 DOI: 10.1016/j.crad.2021.10.024] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 10/25/2021] [Indexed: 11/25/2022]
Abstract
AIM To investigate the associations of skeletal muscle area and density with coronary atherosclerotic plaques and significant stenosis in asymptomatic adults. MATERIALS AND METHODS A total of 243 consecutive subjects who had voluntarily undergone abdominal unenhanced computed tomography (CT) and coronary CT angiography (CCTA) as part of a general health examination were investigated retrospectively. Skeletal muscle area index (SMI) and skeletal muscle density (SMD) was assessed using CT. Coronary atherosclerotic plaques and stenosis on CCTA were evaluated. The associations of low SMI and low SMD with coronary atherosclerotic plaques and significant stenosis were determined by logistic regression analysis. RESULTS After adjustment for cardiovascular risk factors, there were significant associations of low SMI or low SMD with atherosclerotic plaque, total significant stenosis, and significant stenosis caused by calcified or mixed plaques (for all p<0.05). In addition, multivariate regression analysis also showed that low SMI was independently associated with calcified plaque (p=0.038) and non-calcified plaque (p=0.006), and individuals with low SMD were more likely to have mixed plaque (p=0.001). CONCLUSION Assessment of the skeletal muscle on CT help to identify asymptomatic adults at risk for coronary atherosclerosis.
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Affiliation(s)
- S-L Miao
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - T-T Lin
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - F-F Chen
- Department of Vascular Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - L Wang
- Department of Nuclear Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - X-W Zheng
- Department of Radiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - K Tang
- Department of Nuclear Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.
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Li S, Tang K, Khodadadi-Jamayran A, Jen J, Han H, Guidry K, Chen T, Hao Y, Fedele C, Zebala J, Maeda D, Christensen J, Olson P, Athanas A, Wong K, Neel B. OA12.03 Combined Inhibition of SHP2 and CXCR1/2 Promotes Anti-Tumor T Cell Response in NSCLC. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Yim C, Tang K, Wan KM. 685 Incidental intravascular large B-cell lymphoma arising in the uterine myometrium. Pathology 2021. [DOI: 10.1136/ijgc-2021-esgo.528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Cheng Y, Wang J, Cang S, Cao L, Chen E, Dong X, Fan Y, Gao B, Guo Q, Huang D, Li S, Liu A, Lv D, Pan Y, Tang K, Yao W, Ye F, Yu Y, Zang A, Gao M. 60TiP ORIENTAL: An open label, multicenter, phase IIIb study of first-line durvalumab plus platinum-based chemotherapy in Chinese patients with extensive stage small cell lung cancer (ES-SCLC). J Thorac Oncol 2021. [DOI: 10.1016/s1556-0864(21)01902-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Puthattayil ZB, Moore GP, Tang K, Huneault-Purney N, Lawrence SL. Evaluating the impact of CPAP weaning procedures on total days on nasal CPAP: A retrospective chart review. J Neonatal Perinatal Med 2021; 14:537-546. [PMID: 33523028 DOI: 10.3233/npm-200625] [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] [Indexed: 11/15/2022]
Abstract
BACKGROUND There is no consensus on how to wean infants from Nasal Continuous Positive Airway Pressure (NCPAP). We hypothesized that ceasing NCPAP abruptly would decrease the duration required, compared with a gradual wean. METHODS This retrospective chart review included preterm infants requiring NCPAP for over 48 hours. Cohort1 weaned NCPAP by cycling on and off, while cohort 2 ceased NCPAP abruptly. The primary outcome was total days on NCPAP. Secondary outcomes included rate of bronchopulmonary dysplasia, weight gain, duration of hospital stay, and compliance with the use of stability criteria. RESULTS 81 infants met inclusion criteria in cohort one, and 89 in cohort two. Median days on NCPAP were 17.0 and 11.0 days, respectively, not significant. There was no significant difference in secondary outcomes. CONCLUSIONS There was no significant association between the two NCPAP weaning protocols and the outcomes studied.
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Affiliation(s)
- Z B Puthattayil
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada.,Department of Obstetrics, Gynecology and Newborn Care, Division of Neonatology, The Ottawa Hospital, General Campus, Ottawa, Ontario, Canada
| | - G P Moore
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada.,Department of Obstetrics, Gynecology and Newborn Care, Division of Neonatology, The Ottawa Hospital, General Campus, Ottawa, Ontario, Canada
| | - K Tang
- Clinical Research Unit, Children's Hospital of Eastern Ontario Research Institute (CHEO RI)
| | - N Huneault-Purney
- Department of Obstetrics, Gynecology and Newborn Care, Division of Neonatology, The Ottawa Hospital, General Campus, Ottawa, Ontario, Canada
| | - S L Lawrence
- Department of Pediatrics, Division of Neonatology, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada.,Department of Obstetrics, Gynecology and Newborn Care, Division of Neonatology, The Ottawa Hospital, General Campus, Ottawa, Ontario, Canada
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Song L, Rong Y, Tang K, Song X, Li Z, Li X, Yu L. Analysis of the Clinical Efficacy of Minocycline in the Treatment of Diabetic Retinopathy. Indian J Pharm Sci 2021. [DOI: 10.36468/pharmaceutical-sciences.spl.399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Zhou Y, Ma Y, Wu Q, Wang Q, Yang WFZ, Wang Y, Yang D, Luo Y, Tang K, Liu T, Wang D. Comparison of Thyroid Hormone Levels Between Patients With Major Depressive Disorder and Healthy Individuals in China. Front Psychiatry 2021; 12:750749. [PMID: 34721116 PMCID: PMC8551614 DOI: 10.3389/fpsyt.2021.750749] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 09/08/2021] [Indexed: 12/28/2022] Open
Abstract
Abnormal thyroid function in major depressive disorder (MDD) has been studied extensively, but the results still remain inconsistent. In China, few large-scale studies have investigated the differences in the levels of thyroid hormones between patients with MDD and healthy controls (HCs). In this retrospective, cross-sectional study, 535 MDD patients and 998 HCs were included. We compared the levels of thyroid hormones (FT3, FT4, and TSH) between the two groups, as well as investigated the distribution of levels of thyroid hormones within and outside normal ranges. The results showed that all the three hormones were significantly lower in MDD patients than in HCs, which was also true in different gender and age subgroups. The proportion of subjects with levels of all the three hormones outside the normal range in the MDD group was higher than that in the HC group (all p < 0.05). However, no significant difference was found in clinical/subclinical hyperthyroidism or hypothyroidism between the two groups (p > 0.05). Our study showed that the levels of thyroid hormones were lower in MDD patients, suggesting that there was an association between abnormal thyroid function and depression. The higher rate of thyroid dysfunction in MDD patients indicated the importance of regular monitoring of thyroid function.
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Affiliation(s)
- Yanan Zhou
- Department of Psychiatry, Hunan Brain Hospital (Hunan Second People's Hospital), Changsha, China.,Department of Psychiatry, Second Xiangya Hospital, Central South University, Changsha, China
| | - Yuejiao Ma
- Department of Psychiatry, Second Xiangya Hospital, Central South University, Changsha, China
| | - Qiuxia Wu
- Department of Psychiatry, Second Xiangya Hospital, Central South University, Changsha, China
| | - Qianjin Wang
- Department of Psychiatry, Second Xiangya Hospital, Central South University, Changsha, China
| | - Winson Fu Zun Yang
- Department of Psychological Sciences, College of Arts and Sciences, Texas Tech University, Lubbock, TX, United States
| | - Yunfei Wang
- Department of Psychiatry, Second Xiangya Hospital, Central South University, Changsha, China
| | - Dong Yang
- Department of Psychiatry, Hunan Brain Hospital (Hunan Second People's Hospital), Changsha, China
| | - Yinli Luo
- Department of Psychiatry, Hunan Brain Hospital (Hunan Second People's Hospital), Changsha, China
| | - Kewei Tang
- Changqiao Compulsory Isolation and Rehabilitation Center, Changsha, China
| | - Tieqiao Liu
- Department of Psychiatry, Second Xiangya Hospital, Central South University, Changsha, China
| | - Dongfang Wang
- Department of Psychiatry and Psychotherapy, University Hospital Rechts der Isar, Technical University of Munich, Munich, Germany
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Xu Q, Lin XX, Liu P, Zhang W, Tang K, Zhai YS, Liu LJ, Mei WY. MiR-195 inhibits myocardial fibrosis in hypertensive rats by regulating TGFβ1-Smad3 signaling pathway. Eur Rev Med Pharmacol Sci 2020; 24:7919. [PMID: 32767312 DOI: 10.26355/eurrev_202008_22453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The article "MiR-195 inhibits myocardial fibrosis in hypertensive rats by regulating TGFβ1-Smad3 signaling pathway, by Q. Xu, X.-X. Lin, P. Liu, W. Zhang, K. Tang, Y.-S. Zhai, L.-J. Liu, W.-Y. Mei, published in Eur Rev Med Pharmacol Sci 2019; 23 (18): 8087-8094-DOI: 10.26355/eurrev_201909_19026-PMID: 31599435" has been withdrawn from the authors. The Publisher apologizes for any inconvenience this may cause. https://www.europeanreview.org/article/19026.
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Affiliation(s)
- Q Xu
- Department of Cardiology, East Hospital, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Zhang H, Tang K, Fang R, Sun Q. What dermatologists could do to cope with the novel coronavirus (SARS-CoV-2): a dermatologist's perspective from China. J Eur Acad Dermatol Venereol 2020; 34:e211-e212. [PMID: 32220020 DOI: 10.1111/jdv.16389] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- H Zhang
- Department of Dermatology, Peking Union Medical College Hospital, Beijing, China
| | - K Tang
- Department of Dermatology, Peking Union Medical College Hospital, Beijing, China
| | - R Fang
- Department of Dermatology, Peking Union Medical College Hospital, Beijing, China
| | - Q Sun
- Department of Dermatology, Peking Union Medical College Hospital, Beijing, China
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Wang Y, Zhang H, Fang R, Tang K, Sun Q. The top 100 most cited articles in rosacea: a bibliometric analysis. J Eur Acad Dermatol Venereol 2020; 34:2177-2182. [PMID: 32078196 DOI: 10.1111/jdv.16305] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 02/06/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Y. Wang
- Department of Dermatology Peking Union Medical College Hospital Beijing China
- Eight‐year MD Program Peking Union Medical College Beijing China
| | - H. Zhang
- Department of Dermatology Peking Union Medical College Hospital Beijing China
- Eight‐year MD Program Peking Union Medical College Beijing China
| | - R. Fang
- Department of Dermatology Peking Union Medical College Hospital Beijing China
| | - K. Tang
- Department of Dermatology Peking Union Medical College Hospital Beijing China
- Eight‐year MD Program Peking Union Medical College Beijing China
| | - Q. Sun
- Department of Dermatology Peking Union Medical College Hospital Beijing China
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Tang K, Kim HS, Ramanayaka AN, Simons DS, Pomeroy JM. Targeted enrichment of 28Si thin films for quantum computing. J Phys Commun 2020; 4:https://doi.org/10.1088/2399-6528/ab7b33. [PMID: 33043155 PMCID: PMC7543190] [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] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report on the growth of isotopically enriched 28Si epitaxial films with precisely controlled enrichment levels, ranging from natural abundance ratio of 92.2% all the way to 99.99987% (0.83 × 10-6 mol mol-1 29Si). Isotopically enriched 28Si is regarded as an ideal host material for semiconducting quantum computing due to the lack of 29Si nuclear spins. However, the detailed mechanisms for quantum decoherence and the exact level of enrichment needed for quantum computing remain unknown. Here we use hyperthermal energy ion beam deposition with silane gas to deposit epitaxial 28Si. We switch the mass selective magnetic field periodically to control the 29Si concentration. We develop a model to predict the residual 29Si isotope fraction based on deposition parameters and measure the deposited film using secondary ion mass spectrometry (SIMS). The measured 29Si concentrations show excellent agreement with the prediction, deviating on average by only 10%.
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Affiliation(s)
- K Tang
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20740, United States of America
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, United States of America
| | - H S Kim
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, United States of America
- Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20740, United States of America
| | - A N Ramanayaka
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, United States of America
| | - D S Simons
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, United States of America
| | - J M Pomeroy
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, United States of America
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31
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Exertier P, Belli A, Samain E, Meng W, Zhang H, Tang K, Schlicht A, Schreiber U, Hugentobler U, Prochàzka I, Sun X, McGarry JF, Mao D, Neumann A. Time and laser ranging: a window of opportunity for geodesy, navigation and metrology. J Geod 2019; 93:2389-2404. [PMID: 33867691 PMCID: PMC8051204 DOI: 10.1007/s00190-018-1173-8] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 07/08/2018] [Indexed: 06/12/2023]
Abstract
Recent progress in the domain of time and frequency (T/F) standards requires important improvements of existing time distribution links. Among these, the accuracy of time transfer is actually an important part of the concerns in order to establish and maintain time & space references from ground and/or space facilities. Several time transfers by laser link projects have been carried out over the past 10 years with numerous scientific and metrological objectives. Satellite Laser ranging (SLR) has proven to be a fundamental tool, offering a straightforward, conceptually simple, highly accurate and unambiguous observable. Depending on the mission, LR is used to transmit time over two-way or one-way distances from 500 to several millions of km. The following missions and their objectives employed this technique: European Laser Timing (ELT) at 450 km, Time Transfer by Laser Link (T2L2) at 1,336 km, Laser Time Transfer (LTT) at 36,000 km, Lunar Reconnaissance Orbiter (LRO) at 350,000 km, and MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) at tens of million km. This article describes the synergy between SLR and T/F technologies developed on the ground and in space and as well as the state of the art of their exploitation. The performance and sources of limitation of such space missions are analyzed. It shows that current and future challenges lie in the improvement of the time accuracy and stability of the time for ground geodetic observatories. The role of the next generation of SLR systems is emphasized both in space and at ground level, from the point of view of GGOS and valuable exploitation of the synergy between time synchronization, ranging and data transfer.
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Affiliation(s)
| | - A Belli
- CNRS-OCA-UNS, Geoazur, France
- NASA Goddard Space Flight Center, USA
| | | | - W Meng
- Shanghai Astronomical Observatory, CAS, China
| | - H Zhang
- Shanghai Astronomical Observatory, CAS, China
| | - K Tang
- Shanghai Astronomical Observatory, CAS, China
| | | | | | | | | | - X Sun
- NASA Goddard Space Flight Center, USA
| | | | - D Mao
- NASA Goddard Space Flight Center, USA
| | - A Neumann
- NASA Goddard Space Flight Center, USA
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Qiu QL, Chen SZ, Zuo YP, Tang K, Du GL, Huang YX. [Effectiveness of snail control by immersion of molluscicides through tide diversion in marshlands: a field evaluation]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2019; 31:535-537. [PMID: 31713388 DOI: 10.16250/j.32.1374.2018315] [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: 06/10/2023]
Abstract
OBJECTIVE To compare the effectiveness of snail control between immersion of molluscicides through tide diversion and mollusciciding by spraying in marshland areas. METHODS Immersion of 26% suspension concentrate of metaldehyde and niclosamide through tide diversion and spraying 26% suspension concentrate of metaldehyde and niclosamide alone were employed for snail control in two neighboring snail-breeding marshlands, and snails were surveyed before and after mollusciciding. The mortality of snails and the density of living snails were estimated. RESULTS The density of living snails reduced by 72.19% and 100.00% 1 and 2 years after immersion of 26% suspension concentrate of metaldehyde and niclosamide through tide diversion, and 5.93% and 18.15% 1 and 2 years after spraying 26% suspension concentrate of metaldehyde and niclosamide alone. CONCLUSIONS Immersion of 26% suspension concentrate of metaldehyde and niclosamide through tide diversion is significantly superior to spraying 26% suspension concentrate of metaldehyde and niclosamide along for snail control, and implementation of immersion of 26% suspension concentrate of metaldehyde and niclosamide through tide diversion for more than 2 successive years may achieve a higher snail control efficiency.
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Affiliation(s)
- Q L Qiu
- Guangling District Center for Disease Control and Prevention, Yangzhou City, Jiangsu Province, Yangzhou 225000, China
| | - S Z Chen
- Guangling District Center for Disease Control and Prevention, Yangzhou City, Jiangsu Province, Yangzhou 225000, China
| | - Y P Zuo
- Yangzhou Municipal Center for Disease Control and Prevention, Jiangsu Province, China
| | - K Tang
- Yangzhou Municipal Center for Disease Control and Prevention, Jiangsu Province, China
| | - G L Du
- Yangzhou Municipal Office of Leading Group for Schistosomiasis and Endemic Disease Control, Jiangsu Province, China
| | - Y X Huang
- Key Laboratory of National Health Commission on Parasitic Disease Control and Prevention, Jiangsu Provincial Key Laboratory on Parasite and Vector Control Technology, Jiangsu Institute of Parasitic Diseases, China
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Xu Q, Lin XX, Liu P, Zhang W, Tang K, Zhai YS, Liu LJ, Mei WY. MiR-195 inhibits myocardial fibrosis in hypertensive rats by regulating TGFβ1-Smad3 signaling pathway. Eur Rev Med Pharmacol Sci 2019; 23:8087-8094. [PMID: 31599435 DOI: 10.26355/eurrev_201909_19026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the effect of micro-ribonucleic acid-195 (miR-195) on myocardial fibrosis in hypertensive rats through the transforming growth factor beta 1 (TGFβ1)-Smad3 signaling pathway. MATERIALS AND METHODS Spontaneously hypertensive rats (SHRs) were selected in this study to establish the animal model. The content of miR-195 in the model group and control group was measured, respectively. Arterial blood pressure, liver function and myocardial function in the two groups were detected and examined. Pathological changes in rat myocardial tissues were detected via hematoxylin-eosin (HE) staining. After that, myocardial fibroblasts were collected and added with miRNA inhibitors and mimics to suppress and overexpress miR-195. Thereafter, Reverse Transcription-Polymerase Chain Reaction (RT-PCR) and Western blotting were employed to detect the mRNA and protein expression levels of checkpoint kinase 1 (Chek1) and alpha-smooth muscle actin (α-SMA) (important molecules for proliferation and differentiation of myocardial fibroblasts), as well as the related pathway TGFβ1-Smad3. Furthermore, the effects of miR-195 on myocardial fibrosis in hypertensive rats via the TGFβ1-Smad3 signaling pathway were comprehensively observed. RESULTS Serum alkaline phosphatase (ALP), glutamic pyruvic aminotransferase (ALT) and creatine kinase (CK) levels in the SHR group were significantly higher than those of the normal group. Cardiac function examination showed that SHR group had significantly reduced fractional shortening (FS, %) and ejection fraction (EF, %) in comparison with the normal group. However, systolic blood pressure, diastolic blood pressure, left ventricular end-diastolic dimension (LVEDd) and left ventricular end-systolic dimension (LVESd) were markedly elevated in the SHR group. In addition, the miR-195 expression level was remarkably reduced in hypertensive rats. Histopathological changes in rat myocardial tissues were detected through HE staining. The results showed that the normal group had orderly arranged myocardial cells. However, SHR group showed disorderly arranged myocardial cells, thickened myocardial fibers and myocardial fibrosis. RT-PCR assay results revealed that the mRNA levels of Collagen, Chek1, α-SMA, TGFβ1 and Smad3 in rat myocardial fibroblasts were significantly reduced in Mimics group (p<0.05) and increased in Inhibitors group (p<0.05). Western blotting results demonstrated that, compared with the control group, the protein levels of α-SMA, TGFβ1 and Smad3 in rat myocardial cells decreased significantly in Mimics group (p<0.05). Opposite results were observed in Inhibitors group (p<0.05). The above results suggested that overexpression of miR-195 inhibited the expressions of TGFβ1-Smad3 signaling pathway and related molecules, further repressing myocardial fibrosis. CONCLUSIONS MiR-195 participates in the development and progression of myocardial fibrosis in hypertensive rats through the TGFβ1-Smad3 signaling pathway. Furthermore, this can inhibit the development of myocardial fibrosis in hypertensive rats and prevent myocardial diseases.
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Affiliation(s)
- Q Xu
- Department of Cardiology, East Hospital, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
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Zhang H, Qu X, Wang H, Tang K. Early life famine exposure to the Great Chinese Famine in 1959-1961 and subsequent pregnancy loss: a population-based study. BJOG 2019; 127:39-45. [PMID: 31444892 DOI: 10.1111/1471-0528.15908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2019] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To explore the relation between famine exposure in early life and subsequent pregnancy loss, including stillbirth, and spontaneous abortion in adulthood. DESIGN A population-based, partly ecological study. SETTING AND POPULATION Individual data of 58 601 females born around the time of the Great Chinese Famine in 1959-1961. METHODS Associations between the famine exposure in early life and pregnancy loss (stillbirth and spontaneous abortion) in adulthood were analysed using negative binomial regression, with the non-exposure group as reference, adjusting for region, highest education, monthly income, alcohol consumption, tobacco use, body mass index in 25-year-olds and metabolic equivalent. Further analyses were stratified by rural versus urban region. MAIN OUTCOME MEASURES Continuous variables of times of stillbirths and spontaneous abortions were used according to the individual self-reported reproductive history. RESULTS No association was found between famine exposure and spontaneous abortion. In contrast, females experiencing the famine during their prenatal period (incidence rate ratio = 1.15, 95% CI 1.00-1.33) or infant period (incidence rate ratio = 1.27, 95% CI 1.12-1.44) were more likely to report stillbirth in later adult life. Such an association appeared stronger in women living in rural regions. CONCLUSIONS Early life exposure of famine was associated with an increased risk of stillbirth but not spontaneous abortion in adulthood. The strength of such an association appeared stronger in rural areas. Given the high potential for unmeasured confounding, these associations must be interpreted with caution. Regarding the potential implication that undernutrition in the fetal period is related to reproductive outcome in adulthood, fetal nutritional supply may play an important role in human reproduction. TWEETABLE ABSTRACT Exposure to famine in early life was associated with increased pregnancy loss in adulthood.
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Affiliation(s)
- H Zhang
- School of Public Health, Peking University Health Science Center, Beijing, China.,Department of Population, Family and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - X Qu
- School of Public Health, Peking University Health Science Center, Beijing, China.,Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - H Wang
- Institute for Medical Humanities, Peking University Health Science Centre, Beijing, China
| | - K Tang
- Research Centre for Public Health, Tsinghua University, Beijing, China
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Sun T, Tang K, Cui H, Fan H. THERMOLUMINESCENCE OF NEWLY DEVELOPED HIGHLY SENSITIVE α-Al2O3:C BY THE VERTICAL GRADIENT FREEZING METHOD. Radiat Prot Dosimetry 2019; 184:174-178. [PMID: 30452686 DOI: 10.1093/rpd/ncy196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 10/08/2018] [Accepted: 10/26/2018] [Indexed: 06/09/2023]
Abstract
A highly sensitive α-Al2O3:C crystal was directly grown by the vertical gradient freezing (VGF) method using Al2O3 and graphite powder as the raw materials. The main thermoluminescence (TL) characteristics of α-Al2O3:C detectors grown by the VGF method and TLD-500K detectors were compared. The α-Al2O3:C grown by the VGF method shows good dosimetric properties, such as high TL sensitivity (152 times higher than that of the TLD-100 at heating rate of 1°C/s), an extremely low residual signal of 0.03%, a minimum measurable dose of 0.12 μGy and an excellent linear response within the dose range studied from 1 μGy to 10 Gy. The α-Al2O3:C detectors grown by the VGF method have a higher sensitivity and a better linear response compared to the TLD-500K detectors. Both kinds of α-Al2O3:C can be used in an unannealed form and to measure the very low dose in environmental monitoring and personnel dosimetry.
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Affiliation(s)
- T Sun
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 202, Beijing, PR China
- State Key Laboratory of NBC Protection for Civilian, PO Box 1044 Ext. 202, Beijing, PR China
| | - K Tang
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 202, Beijing, PR China
- State Key Laboratory of NBC Protection for Civilian, PO Box 1044 Ext. 202, Beijing, PR China
| | - H Cui
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 202, Beijing, PR China
- State Key Laboratory of NBC Protection for Civilian, PO Box 1044 Ext. 202, Beijing, PR China
| | - H Fan
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 202, Beijing, PR China
- State Key Laboratory of NBC Protection for Civilian, PO Box 1044 Ext. 202, Beijing, PR China
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Tang K, Kim HS, Ramanayaka AR, Simons DS, Pomeroy JM. A compact, ultra-high vacuum ion source for isotopically enriching and depositing 28Si thin films. Rev Sci Instrum 2019; 90:083308. [PMID: 31472599 PMCID: PMC6916650 DOI: 10.1063/1.5097937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
An ultrahigh vacuum (UHV) compatible Penning ion source for growing pure, highly enriched 28Si epitaxial thin films is presented. Enriched 28Si is a critical material for quantum information due to the elimination of nuclear spins. In some cases, the material must be grown by low temperature molecular beam epitaxy, e.g., scanning tunneling microscopy hydrogen lithography-based devices. Traditional high-purity physical vapor methods typically deliver a very small fraction of source material onto the target substrate, making the cost for use with highly enriched source materials very high. Thus, directed beam sources provide an efficient alternative. This UHV Penning source uses all metal or ceramic parts and a removable electromagnet to allow bake-out. The source gas is a commercial (natural isotope abundance) silane gas (SiH4), an inexpensive source material. High enrichment levels up to 99.999 87% (8.32 × 10-7 mol/mol 29Si) and high chemical purity of 99.965% are shown without postprocessing. We present and discuss the discharge properties of this new source, the ion mass spectrum when coupled to our mass filter, and the secondary ion mass spectroscopy of the grown films.
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Affiliation(s)
- K. Tang
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20740, USA
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, USA
| | - H. S. Kim
- Department of Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20740, USA
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, USA
| | - A. R. Ramanayaka
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, USA
| | - D. S. Simons
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, USA
| | - J. M. Pomeroy
- National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8423, USA
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Tang K, Diaz J, Lui O, Proulx L, Galle E, Packham T. Do active assist transfer devices improve transfer safety for patients and caregivers in hospital and community settings? A scoping review. Disabil Rehabil Assist Technol 2019; 15:614-624. [PMID: 31248300 DOI: 10.1080/17483107.2019.1604822] [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] [Indexed: 10/26/2022]
Abstract
Background: Safe patient handling practices reduce injury risk for healthcare workers (HCW) and patients, but may conflict with goals of rehabilitation and person-centred care by minimizing (a) active participation in transfers and (b) autonomy and dignity while using mechanical lifts. Active assist transfer devices (AATDs) have potential to address both safety and support needs for appropriate clients.Purpose: What is the scope and nature of the evidence to support the use of AATD for improving transfer safety for patients and caregivers in both hospital and community settings?Methods: Scoping review of peer-reviewed and Gray literature, using systematic search strategies and multiple reviewers for identifying papers and extracting data.Findings: Twenty-nine peer-reviewed publications, and 12 other documents (policy, technical) were included in the review. Half focused on HCW safety in the hospital setting, with only seven addressing patient safety in the community. Generally, literature was of low quality, with no controlled trials to support the benefit of this equipment, and often represented a nursing care perspective. However, positive outcomes reported included safety, satisfaction, and equipment utilization.Implications: There is a need for rigorous research on use of AATDs in the community comparing rehabilitation outcomes across other forms of transfer equipment. Other important targets include injury risk for family caregivers, and potential to support early discharge. At present, utilization of AATDs within the rehabilitation field will continue to rely on best judgement of the care team. Implementation of AATDs should be considered a compelling target for practice-based research and quality improvements.Implications for rehabilitationThe use of active assist transfer devices is associated with their availability in the in-patient hospital setting.The use of active assist transfer devices is associated with positive patient experience, such as increased patient satisfaction and dignity. Improved patient adherence and cooperation with healthcare workers during mobilization and rehabilitation may follow.Most current evidence is focused on caregiver safety outcomes and is in support of decreased injury rates with increased active assist transfer device use. There is a limited amount of evidence focusing on the rehabilitation outcomes with active assist transfer device use.With current evidence, the use of AATDs should be used at the discretion of the care team.
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Affiliation(s)
- K Tang
- School of Rehabilitation Sciences, McMaster University, Hamilton, Canada
| | - J Diaz
- School of Rehabilitation Sciences, McMaster University, Hamilton, Canada
| | - O Lui
- School of Rehabilitation Sciences, McMaster University, Hamilton, Canada
| | - L Proulx
- School of Rehabilitation Sciences, McMaster University, Hamilton, Canada
| | - E Galle
- West Lincoln Memorial Hospital Hamilton Health Sciences, Grimsby, Canada
| | - T Packham
- School of Rehabilitation Sciences, McMaster University, Hamilton, Canada
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Tang K, Su Z, Zhang J, Cui L, Jiang W, Luo X, Sun X. Bayesian rank penalization. Neural Netw 2019; 116:246-256. [PMID: 31121422 DOI: 10.1016/j.neunet.2019.04.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Revised: 04/15/2019] [Accepted: 04/25/2019] [Indexed: 11/26/2022]
Abstract
Rank minimization is a key component of many computer vision and machine learning methods, including robust principal component analysis (RPCA) and low-rank representations (LRR). However, usual methods rely on optimization to produce a point estimate without characterizing uncertainty in this estimate, and also face difficulties in tuning parameter choice. Both of these limitations are potentially overcome with Bayesian methods, but there is currently a lack of general purpose Bayesian approaches for rank penalization. We address this gap using a positive generalized double Pareto prior, illustrating the approach in RPCA and LRR. Posterior computation relies on hybrid Gibbs sampling and geodesic Monte Carlo algorithms. We assess performance in simulation examples, and benchmark data sets.
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Affiliation(s)
- Kewei Tang
- School of Mathematics, Liaoning Normal University, Dalian, PR China.
| | - Zhixun Su
- School of Mathematical Sciences, Dalian University of Technology, Dalian, PR China; Guilin University of Electronic Technology, Guilin, PR China.
| | - Jie Zhang
- School of Mathematics, Liaoning Normal University, Dalian, PR China.
| | - Lihong Cui
- School of Mathematics, Liaoning Normal University, Dalian, PR China.
| | - Wei Jiang
- School of Mathematics, Liaoning Normal University, Dalian, PR China.
| | - Xiaonan Luo
- Guilin University of Electronic Technology, Guilin, PR China.
| | - Xiyan Sun
- Guilin University of Electronic Technology, Guilin, PR China.
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Kim YH, Tang K, Chang J, Sharma K, Yiacoumi S, Mayes R, Bilheux H, Santodonato L, Tsouris C. Potential limits of capacitive deionization and membrane capacitive deionization for water electrolysis. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1608243] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Y.-H. Kim
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Department of Environmental Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - K. Tang
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, PR China
- Institute of Process Engineering, Division of Environment Technology and Engineering, Beijing Engineering Research Center of Process Pollution Control, Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, PR China
| | - J. Chang
- Institute of Process Engineering, Division of Environment Technology and Engineering, Beijing Engineering Research Center of Process Pollution Control, Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, PR China
| | - K. Sharma
- Civil Engineering, Indian Institute of Technology Gandhinagar, Gandhinagar, Gujarat, India
| | - S. Yiacoumi
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - R.T. Mayes
- Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - H.Z. Bilheux
- Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | | | - C. Tsouris
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Oak Ridge National Laboratory, Oak Ridge, TN, USA
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Morikawa A, Jhaveri K, Grkovski M, Tang K, Humm JL, Holodny A, Beal K, Schoder H, Seidman AD. Abstract P1-19-03: A phase I trial of sorafenib with whole brain radiotherapy (WBRT) in breast cancer patients with brain metastases and a correlative study of FLT-PET brain imaging in patients receiving WBRT with or without sorafenib. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-19-03] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: WBRT is a standard therapy for metastatic breast cancer (MBC) patients (pts) with brain metastases (BM), but disease progression in the brain is common. Sorafenib, a tyrosine kinase inhibitor with anti-VEGF activity, has demonstrated anti-tumor efficacy in MBC and radiosensitizing activity preclinically. [18F] 3'deoxy-3'-fluorothymidine (FLT) is a new PET tracer which correlates with cellular proliferation and may improve response assessment in the brain. Methods: A phase I trial of sorafenib with WBRT in MBC pts with BM was conducted using a 3+3 design. Sorafenib was given orally daily at the start of WBRT for a total of 21 days with 3 doses levels: 200mg, 400mg, and 600mg. The primary endpoints were to determine a maximum tolerated dose (MTD) and to evaluate safety and toxicity. The secondary endpoint was central nervous system progression-free survival (CNS-PFS). Macdonald Criteria were used for response assessment with serial MRI brain imaging. Key eligibility criteria include MBC with new or progressive ≥ 1cm BM, ECOG PS 0-2, non-escalating corticosteroid dose, and no other concurrent anti-tumor therapy except trastuzumab. In parallel, we conducted a correlative FLT-PET imaging study (baseline, 7-10 days (FU1), and 10-12 weeks (FU2) after the WBRT) to assess radiographic changes among pts receiving WBRT + sorafenib and in a separate WBRT only cohort. FLT standard uptake value (SUV) and kinetic parameter data were obtained. Results: 13 pts were treated in the dose escalation phase and evaluable for dose-limiting toxicity (DLT). The median age was 56 years (range: 43-77). There were 4 HER2 positive (31%) and 3 triple negative (23%) pts. 2 pts had prior stereotactic radiosurgery. DLTs were: Grade (G) 4 increased lipase at 200mg (1 pt) and G3 rash at 400mg (3 pts) level. MTD was determined to be 200mg. 10 pts were evaluable for response (at least 1 follow up brain imaging). The overall response rate was 70%: 4 complete responses (CR) + 3 partial responses. All 13 pts were evaluated for CNS PFS with a median follow up of 29.7 months (min 19.6, max 57.4mo). Median CNS-PFS was 8.2 months (95%CI: 3.4-31.8). Median OS was 15.4 months (95% CI: 3.4-NR). A total of 10 pts with WBRT and sorafenib and 5 pts with WBRT only were enrolled in the FLT-PET study: all 15 pts had baseline FLT PET, 14 with FU1, and 9 with FU2. 55 baseline lesions, 38 at FU1 and 15 at FU2 were observed and analyzed. All lesions with FLT uptake had MRI correlates. Decline in average SUVmax of ≥25% was seen in 9/10 (90%) of WBRT+sorafenib and 2/4(50%) of WBRT only pts at FU1. A complete disappearance of FLT uptake was noted in 1 pt at FU1 and 2 more pts at FU2. Conclusions: Concurrent WBRT with sorafenib appears safe at 200mg daily dose with a higher rate of CR compared to historical WBRT data. We are currently enrolling patients in the safety-expansion cohort. This combination should be considered for further efficacy evaluation. Additional analysis of FLT-PET as a complementary imaging modality to MRI is currently ongoing. Clinical trial registry: NCT01724606 and NCT01621906. Support: Bayer, Susan G Komen, ASCO Gianni Bonadonna Breast Cancer Award
Citation Format: Morikawa A, Jhaveri K, Grkovski M, Tang K, Humm JL, Holodny A, Beal K, Schoder H, Seidman AD. A phase I trial of sorafenib with whole brain radiotherapy (WBRT) in breast cancer patients with brain metastases and a correlative study of FLT-PET brain imaging in patients receiving WBRT with or without sorafenib [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-19-03.
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Affiliation(s)
- A Morikawa
- University of Michigan, Ann Arbor, MI; Memorial Sloan Kettering Cancer Center, New York, NY
| | - K Jhaveri
- University of Michigan, Ann Arbor, MI; Memorial Sloan Kettering Cancer Center, New York, NY
| | - M Grkovski
- University of Michigan, Ann Arbor, MI; Memorial Sloan Kettering Cancer Center, New York, NY
| | - K Tang
- University of Michigan, Ann Arbor, MI; Memorial Sloan Kettering Cancer Center, New York, NY
| | - JL Humm
- University of Michigan, Ann Arbor, MI; Memorial Sloan Kettering Cancer Center, New York, NY
| | - A Holodny
- University of Michigan, Ann Arbor, MI; Memorial Sloan Kettering Cancer Center, New York, NY
| | - K Beal
- University of Michigan, Ann Arbor, MI; Memorial Sloan Kettering Cancer Center, New York, NY
| | - H Schoder
- University of Michigan, Ann Arbor, MI; Memorial Sloan Kettering Cancer Center, New York, NY
| | - AD Seidman
- University of Michigan, Ann Arbor, MI; Memorial Sloan Kettering Cancer Center, New York, NY
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Li Y, Liao C, Tang K, Zhang N, Qi W, Xie H, He J, Yin K, Gao Y, Wang C. Cobalt hydroxide-black phosphorus nanosheets: A superior electrocatalyst for electrochemical oxygen evolution. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.11.171] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Wang RF, Lou Y, Tang K, Liu GP, Chen MC, Lin G. [A mini-incision on the anterior hip for pediatric femur neck fractures of type Delbet Ⅱ]. Zhonghua Wai Ke Za Zhi 2019; 57:129-133. [PMID: 30704217 DOI: 10.3760/cma.j.issn.0529-5815.2019.02.011] [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 investigate the early clinical outcomes of hip anterior short incision and open reduction and internal fixation for the treatment of children with Delbet Ⅱ femoral neck fracture. Methods: A retrospective analysis of 12 children with DelbetⅡ femoral neck fractures was performed with the anterior short incision approach at Department of Pediatric Orthopaedic, Children's Hospital, Nanjing Medical University from January 2014 to August 2016. There were 7 males and 5 females including 8 cases at left side and 4 cases at right side,aged (11.5±0.8) years (range: 8-14 years).Patients underwent surgery in (12.0±0.9) hours (range: 6-20 hours) after the injury. Displaced fractures were treated by open reduction if closed reduction failed.The surgical incision was performed with the anterior inferior iliac spine centered on, extending along the groin crease, and the length was 3 to 4 cm. The interval between the sartorius and the tensor fascia latae was applied, and the direct and indirect head of rectus femoris were resected to visualize the hip joint capsule. T-shaped incision was made in the capsule. After the reduction was obtained, two or three compression canulated screws were used to fix the fracture site. The healing time, complications and corresponding record outcome by X-ray and clinical examination were recorded. At the latest follow-up,the results were analyzed using the Ratliff criteria and clinical outcomes were assessed by pain, restrictive hip movement, normal activity or the avoidance of games, and the femoral neck in the radiograph. Results: Twelve patients had been followed-up for (30.0±4.1)months(range: 24-36 months). X-ray showed the fractures' healing time was (8.0±0.4) weeks(range: 7-9 weeks). Ten of the 12 fractures healed after one operation and were associated with no evidence of osteonecrosis of the femoral head. One case occurred premature physeal closure. There were no cases with fracture relocation, coaxvara, delayed union and nonunion or any significant postoperative complications. There was no infection, flexible internal fixation or ruptures. According to Ratliff grade, 9 cases of 12 patients were fine and 3 cases was acceptable. Conclusions: Satisfactory short-term effects can be achieved by a mini-incision on the anterior hip for Delbet Ⅱ pediatric femur neck fractures. The anterior incision has the advantage of less trauma, smaller incision scar, better fracture reduction and fixation, and less wound complications.
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Affiliation(s)
- R F Wang
- Department of Pediatric Orthopaedic, Children's Hospital, Nanjing Medical University, Nanjing 210019, China
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Cui H, Tang K. AN IMPROVED METHOD FOR THE COMPUTERISED ANALYSIS OF GR-200A LiF:Mg,Cu,P TL SIGNALS. Radiat Prot Dosimetry 2018; 182:184-189. [PMID: 29608772 DOI: 10.1093/rpd/ncy047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 03/03/2018] [Indexed: 06/08/2023]
Abstract
The profile of the residual signals of LiF:Mg,Cu,P within the region of dosimetric interest was approximated by a cubic curve. The conventional analysis, the GCA developed in CIEMAT and the GCA developed in this laboratory were compared. For GCA developed in this laboratory, the 5 μGy test dose could be well measured even after measurement at 10 mGy and obviously at lower doses. The 20 μGy test dose could be well measured even after measurement at 50 mGy. The residual signals caused by previous irradiations in the case of using only reader anneal can be more effectively eliminated by GCA developed in this laboratory than GCA developed in CIEMAT. The program developed in this laboratory, effectively estimating the contribution of the residual signals caused by previous irradiations, permits work to be done using only reader anneal in a dose range of more than three orders of magnitude.
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Affiliation(s)
- H Cui
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 202, Beijing, PR China
| | - K Tang
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044 Ext. 202, Beijing, PR China
- State Key Laboratory of NBC Protection for Civilian, PO Box 1044 Ext. 202, Beijing, PR China
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Tang K, Cui H, Qiao H, Fan H. PROPERTIES OF THERMOLUMINESCENT CARDS WITH HIGH SENSITIVE GR-200A LiF:Mg,Cu, P DETECTORS FOR HARSHAW AUTOMATIC READER. Radiat Prot Dosimetry 2018; 182:459-463. [PMID: 29897536 DOI: 10.1093/rpd/ncy102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 05/28/2018] [Indexed: 06/08/2023]
Abstract
New DML TL cards with GR-200A detectors were developed. The TL sensitivity remains stable and the detectors were sealed firmly during the encapsulation process. The sensitivity, detection threshold, residual signal, reusability, dose response and Teflon capsule resistance of DML cards with two GR-200A detectors with diameter 3.6 mm and thickness 0.38 mm placed in positions 2 and 3 were evaluated. The detection thresholds were 0.61 μSv for the detector at position 2 and 1.15 μSv for the detector at position 3. The residual signals were 0.40% for the detector at position 2 and 0.57% for the detector at position 3. The 10 repeated readings of the same 10 irradiated cards were found within 1% for the two detectors on the cards. The DML cards demonstrate very high sensitivity, low background and good stability and can be used for very low dose ranges in personnel dosimetry and in environmental monitoring.
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Affiliation(s)
- K Tang
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044, Ext. 202, Beijing, PR China
- State Key Laboratory of NBC Protection for Civilian, PO Box 1044, Ext. 202, Beijing, PR China
| | - H Cui
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044, Ext. 202, Beijing, PR China
| | - H Qiao
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044, Ext. 202, Beijing, PR China
| | - H Fan
- Solid Dosimetric Detector and Method Laboratory, PO Box 1044, Ext. 202, Beijing, PR China
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Sun XS, Wang B, Wang F, Tang K, Zhang ZQ, Lin G, Lou Y. [Complications of 2 133 cases of pediatric long bone fracture undergoing elastic stable intramedullary nailing in a single medical center]. Zhonghua Wai Ke Za Zhi 2018; 56:670-676. [PMID: 30157573 DOI: 10.3760/cma.j.issn.0529-5815.2018.09.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To summarize the clinical data of elastic stable intramedullary nailing(ESIN) in the treatment of long bone fracture of children in a single medical center, and to analyze the problems occurred after the ESIN surgery and corresponding solutions. Methods: A retrospective analysis was conducted regarding the clinical data of 2 133 pediatric long bone fractures conforming to inclusion and exclusion criteria from June, 2005 to December, 2017 in Department of Orthopedics, Children's Hospital of Nanjing Medical University.There were 1 191 boys and 942 girls, aged from 23 months to 14 years with mean age of (5.7 ± 3.1)years.There were 1 866 cases treated with closed reduction with ESIN, while 267 cases were treated with small incision assisted reduction with ESIN.Postoperative problems have been statistically analyzed. Results: There were altogether 2 133 children, including 603 cases of femur, 311 cases of tibia, 8 cases of fibula, 219 cases of humerus, and 992 cases of ulna/radius.The postoperative complications mainly consist of 62 cases of needle tail irritation reaction, 21 cases of misalignments of fracture alignment, 11 cases of intramedullary nail deformity or angular deformity, 7 cases of limb shortening, 14 cases of limited joint activity, 4 cases of nerve injury, 2 cases of tendon injury, 14 cases of difficult nail removal, 4 cases of cortical cleavage, 8 cases of delayed union, 1 case of nonunion, 6 cases of varus/valgus deformity, 5 cases of epiphyseal injury, 6 cases of ESIN exposure, and 2 cases of metal debris of ESIN' end. Conclusions: The complications of treatment for children with long bone fractures by ESIN cannot be ignored.To master the important biomechanical properties, to get familiar with the local anatomy and to avoid obvious technical errors can reduce the occurrence of postoperative complications.
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Affiliation(s)
- X S Sun
- Department of Orthopedics, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
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Pan SY, Chen ST, Tang K, Li CX, Liu J, Ye J, Zhao WT. Age Estimation and Age-related Facial Reconstruction of Xinjiang Uygur Males by Three-dimensional Human Facial Images. Fa Yi Xue Za Zhi 2018; 34:363-369. [PMID: 30465399 DOI: 10.12116/j.issn.1004-5619.2018.04.004] [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: 09/19/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To search age-correlated facial features and construct an age estimation model based on the three-dimensional (3D) facial images of Xinjiang Uygur males, and to structure individual face images of old age and young age. METHODS Pretreatment was performed to collect 105 3D facial images of Xingjiang Uygur males aged between 17-57 years by Artec Studio software. The facial images were transferred to high-density 3D dot matrix data by FaceAnalysis software, and each image could be represented with 32 251 vertexes. Central correction of the facial images was done and all the data were aligned to a standard coordinate frame by generalized Procrustes analysis (GPA). The age estimation model was established by partial least square regression (PLSR). Furthermore, the changes of age-correlated facial features were presented on the heat map of average face, and the reconstruction of facial images at different ages was performed based on this model. RESULTS With age, the average faces showed a series of changes including the nasolabial sulcus deepening, cheek sinking, cheekbone protruding and eye corner drooping. The Pearson correlation coefficient (r) between estimated age and chronological age was 0.71. The mean absolute deviation (MAD) of age estimation was 6.37 years. The results of age estimation in >30-40 years group showed a best accuracy (MAD=4.27 years), and the deviations increased with age after 40 years. The composite facial images represented a significant result with age on facial morphological features and aging. CONCLUSIONS The results of this study reveal the age-correlated facial features and aging markers in Uygur population, which help to construct a reliable age estimation model.
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Affiliation(s)
- S Y Pan
- People's Public Security University of China, Beijing 100038, China.,National Engineering Laboratory for Crime Scene Evidence Investigation and Examination, Beijing Engineering Research Center of Crime Scene Evidence Examination, Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
| | - S T Chen
- Shanghai Institutes for Biological Sciences, Shanghai 200031, China
| | - K Tang
- Shanghai Institutes for Biological Sciences, Shanghai 200031, China
| | - C X Li
- National Engineering Laboratory for Crime Scene Evidence Investigation and Examination, Beijing Engineering Research Center of Crime Scene Evidence Examination, Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
| | - J Liu
- National Engineering Laboratory for Crime Scene Evidence Investigation and Examination, Beijing Engineering Research Center of Crime Scene Evidence Examination, Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
| | - J Ye
- People's Public Security University of China, Beijing 100038, China.,National Engineering Laboratory for Crime Scene Evidence Investigation and Examination, Beijing Engineering Research Center of Crime Scene Evidence Examination, Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
| | - W T Zhao
- National Engineering Laboratory for Crime Scene Evidence Investigation and Examination, Beijing Engineering Research Center of Crime Scene Evidence Examination, Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China
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Tang K, Su Z, Jiang W, Zhang J, Sun X, Luo X. Robust subspace learning-based low-rank representation for manifold clustering. Neural Comput Appl 2018. [DOI: 10.1007/s00521-018-3617-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Andrioli V, Guerra L, Keays M, Keefe DT, Tang K, Sullivan KJ, Garland K, Rafikov M, Leonard MP. Active surveillance for antenatally detected ureteroceles: Predictors of success. J Pediatr Urol 2018; 14:243.e1-243.e6. [PMID: 29580731 DOI: 10.1016/j.jpurol.2018.02.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Accepted: 02/05/2018] [Indexed: 10/17/2022]
Abstract
INTRODUCTION Historically, ureteroceles were surgically treated, as patients were diagnosed after developing symptoms. However, with the advance of fetal medicine, antenatal detection has provided an opportunity to look at the natural history of ureteroceles. OBJECTIVES With data derived from a retrospective chart review of patients with ureteroceles that were detected antenatally, the current study aimed to determine which group of children would be at risk for failure on active surveillance. It was hypothesized that single system ureteroceles (SSU) and male patients with duplex system ureteroceles (DSU) would be ideal for observation. METHODS Outcomes were assessed by descriptive statistics. Kaplan-Meier curves were utilized to estimate median duration on active surveillance in both single and duplex cohorts. Breakthrough febrile urinary tract infection (fUTI) and surgery were determined by Cox regression in the duplex system cohort. Surgery was considered surveillance failure. RESULTS A total of 102 patients (64 females/38 males) met the criteria: 78 (76.5%) had DSU and 24 (23.5%) SSU. The overall median observation was 1.2 years (range 0.7-3.1). Follow-up ranged from 0.3 to 11.7 years for SSU, and from 0.02 to 17.3 years for DSU. The predictors of failure of active surveillance (AS) in DSU (surgical intervention) were male gender (HR 1.8, 1.0-3.3, P = 0.037), or fUTI (HR 3.1, 1.7-5.8, P = 0.002). Predictors of fUTI were contralateral hydroureter or ipsilateral hydronephrosis ± hydroureter (OR 9.5, 1.2-71.7, P = 0.028). Interestingly, vesicoureteral reflux (VUR) was not a predictor of fUTI. The SSU patients were ideal for AS, while in DSU, surveillance was successful in 30% of patients who were primarily females without contralateral hydroureter or ipsilateral hydronephrosis ± hydroureter. However, in contradiction to the hypothesis, males were at higher risk for surgical intervention in the DSU cohort. CONCLUSION Active surveillance is an option for patients with antenatally detected ureteroceles, but careful long term follow up is mandatory. Parents should be advised that surgical intervention may still be necessary, particularly in males with DSU.
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Affiliation(s)
- V Andrioli
- Division of Urology, Department of Surgery, Children's Hospital of Eastern Ontario, Ottawa, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Canada; Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - L Guerra
- Division of Urology, Department of Surgery, Children's Hospital of Eastern Ontario, Ottawa, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Canada; Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - M Keays
- Division of Urology, Department of Surgery, Children's Hospital of Eastern Ontario, Ottawa, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Canada; Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - D T Keefe
- Division of Urology, Department of Surgery, Children's Hospital of Eastern Ontario, Ottawa, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - K Tang
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - K J Sullivan
- Division of Urology, Department of Surgery, Children's Hospital of Eastern Ontario, Ottawa, Canada; Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada
| | - K Garland
- Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - M Rafikov
- Division of Urology, Department of Surgery, Children's Hospital of Eastern Ontario, Ottawa, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Canada
| | - M P Leonard
- Division of Urology, Department of Surgery, Children's Hospital of Eastern Ontario, Ottawa, Canada; Faculty of Medicine, University of Ottawa, Ottawa, Canada; Children's Hospital of Eastern Ontario Research Institute, Ottawa, Canada.
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Henry CE, Llamosas E, Daniels B, Coopes A, Tang K, Ford CE. ROR1 and ROR2 play distinct and opposing roles in endometrial cancer. Gynecol Oncol 2018; 148:576-584. [PMID: 29395309 DOI: 10.1016/j.ygyno.2018.01.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 12/17/2017] [Revised: 01/17/2018] [Accepted: 01/23/2018] [Indexed: 12/15/2022]
Abstract
OBJECTIVE In recent years, the Wnt signalling pathway and the ROR1 and ROR2 receptors have been implicated in a range of gynecological cancers. These receptors have been described as prospective therapeutic targets, and this study investigated such potential in an endometrial cancer context. METHOD Immunohistochemistry for ROR1 and ROR2 was performed in a patient cohort, and expression was correlated with clinicopathological parameters including type, stage, grade, myometrial invasion, lymphovascular involvement, patient age and survival. The functional role of these receptors in endometrial cancer was investigated via siRNA knockdown of ROR1 and ROR2 in three cell line models (KLE, RL95-2 and MFE-319). Effects on proliferation, adhesion, migration and invasion were measured. RESULTS High ROR1 expression in patient samples correlated with worse overall survival (p = 0.0169) while high ROR2 expression correlated with better overall survival (p = 0.06). ROR1 knockdown in KLE cells significantly decreased proliferation (p = 0.047) and reduced migration and invasion. ROR2 knockdown in RL95-2 cells increased cell migration and invasion (p = 0.011). Double ROR1 and ROR2 knockdown in MFE-319 cells decreased adhesion and significantly increased cell migration (P = 0.008) and invasion (p < 0.001). CONCLUSION ROR1 and ROR2 play distinct roles in endometrial cancer. ROR1 may promote tumor progression, similar to its role in ovarian cancer, while ROR2 may act as a tumor suppressor in endometrioid endometrial cancer, similar to its role in colorectal cancer. With several ROR-targeting therapies currently in development and phase I clinical trials for other tumor types, this study supports the potential of these receptors as therapeutic targets for women with endometrial cancer.
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Affiliation(s)
- C E Henry
- Gynaecological Cancer Research Group, Lowy Cancer Research Centre, School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Australia
| | - E Llamosas
- Gynaecological Cancer Research Group, Lowy Cancer Research Centre, School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Australia
| | - B Daniels
- Medicines Policy Research Unit, Centre for Big Data Research in Health, Faculty of Medicine, University of New South Wales, Australia
| | - A Coopes
- Gynaecological Cancer Research Group, Lowy Cancer Research Centre, School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Australia
| | - K Tang
- South Eastern Area Laboratory Services Pathology, Prince of Wales Hospital, Randwick, Australia
| | - C E Ford
- Gynaecological Cancer Research Group, Lowy Cancer Research Centre, School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Australia.
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Tang K, Qi W, Li Y, Wang T. Tuning the electronic properties of van der Waals heterostructures composed of black phosphorus and graphitic SiC. Phys Chem Chem Phys 2018; 20:29333-29340. [DOI: 10.1039/c8cp06170j] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
This study presents a new van der Waals (vdW) heterostructure composed of monolayer black phosphorus (BP) and monolayer graphitic SiC (g-SiC).
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Affiliation(s)
- Kewei Tang
- State Key Laboratory of Solidification Processing
- Center of Advanced Lubrication and Seal Materials
- Northwestern Polytechnical University
- Xi’an Shanxi 710072
- P. R. China
| | - Weihong Qi
- State Key Laboratory of Solidification Processing
- Center of Advanced Lubrication and Seal Materials
- Northwestern Polytechnical University
- Xi’an Shanxi 710072
- P. R. China
| | - Yejun Li
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process
- School of Physics and Electronics
- Central South University
- Changsha 410083
- P. R. China
| | - Tianran Wang
- School of Materials Science and Engineering
- Central South University
- Changsha 410083
- P. R. China
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