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Wu P, Zhou H, Gao Y, Chen Y, Wang K, Wei C, Zhang H, Jin X, Ma A, Chen W, Liu H. Double layered asymmetrical hydrogels enhanced by thermosensitive microgels for high-performance mechanosensors and actuators. J Colloid Interface Sci 2024; 662:976-985. [PMID: 38382380 DOI: 10.1016/j.jcis.2024.02.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/11/2024] [Accepted: 02/13/2024] [Indexed: 02/23/2024]
Abstract
Thermosensitive hydrogels have found extensive applications in soft devices, but they often suffer from limited functionalities, low response rate and small response amplitude. In this work, double layered asymmetrical hydrogels composed of a thermosensitive layer and a non-thermosensitive layer are developed to simultaneously achieve high-performance mechanosensing and actuating properties in a single hydrogel. In thermosensitive layer, thermosensitive microgels are introduced to construct hierarchical structure, which accounts for the enhanced thermosensitive behaviors by cooperative responsiveness. In non-thermosensitive layer, poly(acrylamide-co-acrylic acid) (P(AM-co-AA)) hydrogel is constructed. KCl is introduced as conductive component. Mechanosensors for monitoring various mechanical stimuli in daily life have been fabricated utilizing such hydrogels and high gauge factors (GF) have been achieved, 0.38 for resistive strain sensors, 9.40 kPa-1 for piezoresistive pressure sensors and 3.92 kPa-1 for capacitive pressure sensors. Because of the asymmetrical structure, such hydrogels also exhibit outstanding actuating properties with a fast response rate of 863°/min and a bending amplitude about 360°. Interestingly, grasping-releasing of target objects utilizing an octopus-shaped hydrogel actuator and temperature alerting based on hydrogel actuator are also demonstrated. Overall, the double layered asymmetrical ionic hydrogels have provided a new clue to construct hydrogel devices with multiple functionalities and enhanced response properties.
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Affiliation(s)
- Ping Wu
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Hongwei Zhou
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China.
| | - Yang Gao
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Yuru Chen
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Kexuan Wang
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Chuanjuan Wei
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Hongli Zhang
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Xilang Jin
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Aijie Ma
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Weixing Chen
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Hanbin Liu
- Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, College of Bioresource Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
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Zheng H, Zhou H, Zheng B, Wei C, Ma A, Jin X, Chen W, Liu H. Stable Flexible Electronic Devices under Harsh Conditions Enabled by Double-Network Hydrogels Containing Binary Cations. ACS Appl Mater Interfaces 2024; 16:7768-7779. [PMID: 38294427 DOI: 10.1021/acsami.3c17057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Hydrogels are increasingly used in flexible electronic devices, but the mechanical and electrochemical stabilities of hydrogel devices are often limited under specific harsh conditions. Herein, chemically/physically cross-linked double-network (DN) hydrogels containing binary cations Zn2+ and Li+ are constructed in order to address the above challenges. Double networks of chemically cross-linked polyacrylamide (PAM) and physically cross-linked κ-Carrageenan (κ-CG) are designed to account for the mechanical robustness while binary cations endow the hydrogels with excellent ionic conductivity and outstanding environmental adaptability. Excellent mechanical robustness and ionic conductivity (25 °C, 2.26 S·m-1; -25 °C, 1.54 S·m-1) have been achieved. Utilizing the DN hydrogels containing binary cations as signal-converting materials, we fabricated flexible mechanosensors. High gauge factors (resistive strain sensors, 2.4; capacitive pressure sensors, 0.82 kPa-1) and highly stable sensing ability have been achieved. Interestingly, zinc-ion hybrid supercapacitors containing the DN hydrogels containing binary cations as electrolytes have achieved an initial capacity of 52.5 mAh·g-1 at a current density of 3 A·g-1 and a capacity retention rate of 82.9% after 19,000 cycles. Proper working of the zinc-ion hybrid supercapacitors at subzero conditions and stable charge-discharge for more than 19,000 cycles at -25 °C have been demonstrated. Overall, DN hydrogels containing binary cations have provided promising materials for high-performance flexible electronic devices under harsh conditions.
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Affiliation(s)
- Huihui Zheng
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Hongwei Zhou
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Bohui Zheng
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Chuanjuan Wei
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Aijie Ma
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Xilang Jin
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Weixing Chen
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Hanbin Liu
- Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, College of Bioresource Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
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Zhu J, Qu Y, Lu M, Ma A, Mo J, Wen Z. CT-based radiomics for prediction of pulmonary haemorrhage after percutaneous CT-guided transthoracic lung biopsy of pulmonary nodules. Clin Radiol 2023; 78:e993-e1000. [PMID: 37726191 DOI: 10.1016/j.crad.2023.08.018] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 08/14/2023] [Accepted: 08/23/2023] [Indexed: 09/21/2023]
Abstract
AIM To evaluate the feasibility of intranodular and perinodular computed tomography (CT) radiomics features for predicting the occurrence of pulmonary haemorrhage after percutaneous CT-guided transthoracic lung biopsy (PCTLB) in pulmonary nodules. MATERIALS AND METHODS The data for 332 patients with pulmonary nodules who underwent PCTLB were reviewed retrospectively. Pulmonary haemorrhage after PCTLB was evaluated using CT (144 cases occurred). Radiomics features based on gross nodular (GNV) and perinodular volumes (PNV) were extracted from pre-biopsy CT images and features selection using least absolute shrinkage and selection operator (LASSO) regression, and three radiomics scores (rad-scores) were built. Rad-scores, clinical, and clinical-radiomic models were developed and evaluated to predict the occurrence of pulmonary haemorrhage. RESULTS Five, five, and six significant features were selected for prediction of pulmonary haemorrhage based on GNV, PNV, and GNV + PNV, respectively. Lesion depth was the only clinical characteristics related to pulmonary haemorrhage. Lesion depth and rad-score based on GNV, PNV, and GNV + PNV for predicting the pulmonary haemorrhage achieved areas under the curves (AUCs) of 0.656, 0.645, 0.651, and 0.635 in the validation group, respectively. Three clinical-radiomic models improved the AUCs to 0.743, 0.723, and 0.748. The performance of rad-score_GNV + PNV combined with lesion depth outperformed the clinical model (p=0.024) and the radiomics signature (p=0.038). In addition, the radiomics signatures were significantly associated with higher-grade pulmonary haemorrhage (p<0.05). CONCLUSIONS Radiomics features from intranodular and perinodular regions of pulmonary nodules have good predictive ability for pulmonary haemorrhage after PCTLB, which may provide additional predictive value for clinical practice.
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Affiliation(s)
- J Zhu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - Y Qu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - M Lu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - A Ma
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - J Mo
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China
| | - Z Wen
- Department of Radiology, Zhujiang Hospital, Southern Medical University, 253 Gongye Middle Avenue, Haizhu District, Guangzhou, Guangdong, 510282, China.
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Peng C, Guo Q, Zhang T, Chen J, Liu N, Yan P, Lu Y, Ma A, Lv P, Liu J, Xie P. Maintenance Therapy for Recurrent or Metastatic Cervical Cancer: A Multicenter, Cohort Study. Int J Radiat Oncol Biol Phys 2023; 117:e537-e538. [PMID: 37785662 DOI: 10.1016/j.ijrobp.2023.06.1827] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Maintenance therapy with alternative agents after chemotherapy was shown to improve the overall survival in some advanced cancers such as breast cancer, lung cancer, ovarian cancer and so on. However, maintenance therapy is not accepted as the standard treatment for recurrent/metastatic cervical cancer. Aim of this study is to elucidate the efficacy of maintenance therapy in cervical cancer and to explore the factors associated with the prognosis of recurrent or metastatic cervical cancer. MATERIALS/METHODS In this multicenter cohort study, we retrospectively collected patients with a diagnosis of either recurrent or stage IVB cervical cancer to receive first-line chemotherapy with or without maintenance therapy. Patients did not have disease progression with first-line chemotherapy and were divided into maintenance therapy group (Arm A) and conventional chemotherapy group (Arm B). Information on clinical characteristics, metastasis information, treatment outcome and survival of patients was collected using an electronic medical record system. The endpoints of the study were OS and PFS. Data were analyzed for general characteristics and survival using statistical software, and the results were considered statistically significant at P < 0.05. RESULTS Between January 2019 and July 2021, a total of 270 patients were enrolled from 6 institutions in China. 26 patients were excluded because of short treatment cycles (less than 3 cycles). Finally, a total of 66 patients in Arm A and 178 patients in Arm B were analyzed for survival. The addition of maintenance significantly prolonged overall survival. Overall survival at 3 year was 50.1% in Arm A and 27.8% in Arm B (median overall survival, ≥36 months vs. 22 months; P<0. 001). The median progression-free survival was 21 months in Arm A and 14 months in Arm B (P = 0.025). Univariate survival analysis showed that age, maintenance therapy, combined radiotherapy, and number of extra-pelvic metastases were associated with PFS. Further multifactorial analysis showed that maintenance therapy, combined radiotherapy, and number of extra-pelvic metastases were independent prognostic factors for patients with recurrent or metastatic cervical cancer. CONCLUSION The addition of maintenance therapy significantly prolonged overall survival as well as progression-free survival in patients with recurrent or metastatic cervical cancer and did not increase the incidence of serious adverse events. It is time to consider maintenance therapy as the standard treatment after conventional chemotherapy for recurrent or metastatic cervical cancer, rather than waiting for disease progression.
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Affiliation(s)
- C Peng
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - Q Guo
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - T Zhang
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - J Chen
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - N Liu
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
| | - P Yan
- Department of Gastrointestinal, Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Y Lu
- Department of Radiation Oncology, The First Affiliated Hospital of Wannan Medical College, Wuhan, China
| | - A Ma
- Department of Thoracic Surgery, East Hospital of Shandong First Medical University Affiliated Provincial Hospital, Jinan, China
| | - P Lv
- Department of Gynecology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Jinan, China
| | - J Liu
- Department of Radiation Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - P Xie
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
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Lu M, Qu Y, Ma A, Zhu J, Zou X, Lin G, Li Y, Liu X, Wen Z. [Prediction of 1p/19q codeletion status in diffuse lower-grade glioma using multimodal MRI radiomics]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:1023-1028. [PMID: 37439176 DOI: 10.12122/j.issn.1673-4254.2023.06.19] [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: 07/14/2023]
Abstract
OBJECTIVE To develop a noninvasive method for prediction of 1p/19q codeletion in diffuse lower-grade glioma (DLGG) based on multimodal magnetic resonance imaging (MRI) radiomics. METHODS We collected MRI data from 104 patients with pathologically confirmed DLGG between October, 2015 and September, 2022. A total of 535 radiomics features were extracted from T2WI, T1WI, FLAIR, CE-T1WI and DWI, including 70 morphological features, 90 first order features, and 375 texture features. We constructed logistic regression (LR), logistic regression least absolute shrinkage and selection operator (LRlasso), support vector machine (SVM) and Linear Discriminant Analysis (LDA) radiomics models and compared their predictive performance after 10-fold cross validation. The MRI images were reviewed by two radiologists independently for predicting the 1p/19q status. Receiver operating characteristic curves were used to evaluate classification performance of the radiomics models and the radiologists. RESULTS The 4 radiomics models (LR, LRlasso, SVM and LDA) achieved similar area under the curve (AUC) in the validation dataset (0.833, 0.819, 0.824 and 0.819, respectively; P>0.1), and their predictive performance was all superior to that of resident physicians of radiology (AUC=0.645, P=0.011, 0.022, 0.016, 0.030, respectively) and similar to that of attending physicians of radiology (AUC=0.838, P>0.05). CONCLUSION Multiparametric MRI radiomics models show good performance for noninvasive prediction of 1p/19q codeletion status in patients with in diffuse lower-grade glioma.
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Affiliation(s)
- M Lu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Y Qu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - A Ma
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - J Zhu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Zou
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - G Lin
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Y Li
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - X Liu
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
| | - Z Wen
- Department of Radiology, Zhujiang Hospital, Southern Medical University, Guangzhou 510282, China
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Xiao S, Ma A, Ma Y, Bai H, Zhang B, Li J, Zhou H. Preparation and performance of latanoprost-loaded hydrogels as a lacrimal suppository for the treatment of glaucoma. J Biomater Appl 2023; 37:1529-1541. [PMID: 36693765 DOI: 10.1177/08853282221133181] [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: 01/26/2023]
Abstract
Glaucoma is the leading cause of irreversible blindness, and its treatment is attracting widespread attention. Drug-loaded lacrimal suppositories can effectively treat xerophthalmia, but there is little research on the treatment of glaucoma with drug-loaded lacrimal suppositories. This article explored and expanded the non-pharmacological model of lacrimal suppository therapy for glaucoma by using a combination of lacrimal suppository and medication. The drug-loaded lacrimal suppository was rationally designed through the conjugation of gelatin with polyamide (PAM) via the formation of amide linkages, followed by Schiff base reaction grafting with latanoprost. In vitro drug release studies showed that latanoprost released from drug-loaded lacrimal embolus had sustained-release properties with a release time of 33 days and a drug release volume of 82.6%. The biological evaluation of drug-loaded lacrimal thrombus was carried out by IOP test, retinal potential test, and retinal H&E staining. The results showed that the IOP decreased to 27.125 ± 1.1254 mmHg, and the a and b waves of retinal potential increased to 4.39 ± 0.16 μV and 67.9 ± 2.17 μV, respectively. It indicated that latanoprost lacrimal suppository has a good therapeutic effect on glaucoma.
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Affiliation(s)
| | - Aijie Ma
- School of Materials and Chemical Engineering, 12479Xi'an Technological University, Xi'an, People's Republic of China
| | - Yanzhuo Ma
- School of Materials and Chemical Engineering, 12479Xi'an Technological University, Xi'an, People's Republic of China
| | - Haiyan Bai
- School of Materials and Chemical Engineering, 12479Xi'an Technological University, Xi'an, People's Republic of China
| | - Binghong Zhang
- School of Materials and Chemical Engineering, 12479Xi'an Technological University, Xi'an, People's Republic of China
| | - Juan Li
- 596819Xi'an Fourth Hospital, Xi'an, People's Republic of China
| | - Hongwei Zhou
- School of Materials and Chemical Engineering, 12479Xi'an Technological University, Xi'an, People's Republic of China
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Ma Y, Ma A, Luo T, Xiao S, Zhou H. Fabrication of anisotropic nanocomposite hydrogels by magnetic field‐induced orientation for mimicking cardiac tissue. J Appl Polym Sci 2022. [DOI: 10.1002/app.53248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Yanzhuo Ma
- School of Materials and Chemical Engineering Xi'an Technological University Xi'an China
| | - Aijie Ma
- School of Materials and Chemical Engineering Xi'an Technological University Xi'an China
| | - Tao Luo
- School of Materials and Chemical Engineering Xi'an Technological University Xi'an China
| | - Siyu Xiao
- School of Materials and Chemical Engineering Xi'an Technological University Xi'an China
| | - Hongwei Zhou
- School of Materials and Chemical Engineering Xi'an Technological University Xi'an China
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Du H, Zhou H, Wang M, Zhao G, Jin X, Liu H, Chen W, Weng W, Ma A. Electrospun Elastic Films Containing AgNW-Bridged MXene Networks as Capacitive Electronic Skins. ACS Appl Mater Interfaces 2022; 14:31225-31233. [PMID: 35762451 DOI: 10.1021/acsami.2c04593] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Electronic skins (e-skins) are increasingly investigated and applied in wearable devices, but the robustness and convenient production of traditional e-skins are restricted. In this work, electrospun sandwich-structured elastic films (ESEFs) are developed and utilized as capacitive e-skins. The ESEFs consist of two nanocomposite mats as the electrode layers and a sandwiched thermoplastic polyurethane (TPU) mat as the dielectric layer. The nanocomposite mats are composed of thermoplastic polyurethane (TPU) and AgNW-bridged MXene (AgNW, silver nanowire; MXene, Ti3C2Tx) conductive network. The resulting ESEFs achieve a tensile strength of 14.80 MPa, an elongation at break of 270%, and an outstanding antifatigue property. E-skins of such ESEFs have the ability to respond to both strain and pressure with a high gauge factor (GF) (strain: GF = 1.21; pressure: GF = 0.029 kPa-1), wide response range (strain: 0-150%; pressure: 0-70 kPa), low response time, and outstanding stability (2000 cycles). On the basis of integrated sensing performances, such e-skins are further applied in monitoring various mechanical stimuli in daily life, including bending of a plastic plate, joint bending, and swallowing.
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Affiliation(s)
- Haotian Du
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an710021, Shaanxi, P. R. China
| | - Hongwei Zhou
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an710021, Shaanxi, P. R. China
| | - Mingcheng Wang
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an710021, Shaanxi, P. R. China
| | - Guoxu Zhao
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an710021, Shaanxi, P. R. China
| | - Xilang Jin
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an710021, Shaanxi, P. R. China
| | - Hanbin Liu
- Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, College of Bioresource Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an710021, Shaanxi, P. R. China
| | - Weixing Chen
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an710021, Shaanxi, P. R. China
| | - Wanqi Weng
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an710021, Shaanxi, P. R. China
| | - Aijie Ma
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an710021, Shaanxi, P. R. China
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Ma A. Influence of Nanosemiconductor Materials on Thermal Stability of Solar Cells. Int J Anal Chem 2022; 2022:6805501. [PMID: 35832780 PMCID: PMC9273449 DOI: 10.1155/2022/6805501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/09/2022] [Accepted: 06/20/2022] [Indexed: 11/28/2022] Open
Abstract
In order to overcome the problem of long-term stability of perovskite solar cells, the author proposes a method to study the effects of nanosemiconductor materials on the thermal stability of solar cells. In this method, n = 3 and n = 1 (C6H5(CH2)2NH3)2(CH3NH3)n-1Pbn I3n+1 two-dimensional nanoperovskite films were investigated on glass substrates and indium tin oxide (ITO) substrates, respectively, on the thermal stability. Experimental results show that the glass-based nanoperovskite PMPI3 film was partially decomposed into PbI2 after being heated at 160°C. When the temperature reaches 180°C, the film is completely decomposed into PbI2, and the perovskite PMPI3 film with ITO as the substrate is completely decomposed into PbI2 when the heating temperature reaches 140°C. The charge transfer between the perovskite film and the substrate is the physical reason for its easier thermal decomposition on the ITO substrate. Suggestions for improving the thermal stability of perovskite solar cell devices are given from the aspects of device design and fabrication process.
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Affiliation(s)
- Aijie Ma
- Hebei Chemical & Pharmaceutical College, Shijiazhuang 050026, China
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Richardson E, Krishnan N, Stafford F, Yeates L, Nowak N, McGaughran J, Wildschutt J, Smith J, Turner C, Kevin L, Davis A, Macciocca I, Connell V, Ma A, Semsarian C, Bagnall R, Siggs O, Skinner J, MacArthur D, Ingles J. The Elusive Hearts Study: Seeking Genetic Diagnoses in Gene-elusive Cases of Rare Monogenic Cardiovascular Diseases. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.04.036] [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: 11/17/2022]
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Zhang H, Zhu S, Yang J, Ma A, Chen W. Enhanced removal efficiency of heavy metal ions by assembling phytic acid on polyamide nanofiltration membrane. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119591] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Li S, Zhou H, Li Y, Jin X, Liu H, Lai J, Wu Y, Chen W, Ma A. Mussel-inspired self-adhesive hydrogels by conducting free radical polymerization in both aqueous phase and micelle phase and their applications in flexible sensors. J Colloid Interface Sci 2021; 607:431-439. [PMID: 34509117 DOI: 10.1016/j.jcis.2021.08.205] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 06/20/2021] [Revised: 08/29/2021] [Accepted: 08/30/2021] [Indexed: 12/26/2022]
Abstract
Polydopamine (PDA)-based self-adhesive hydrogel sensors are extensively explored but it is still a challenge to construct PDA-based hydrogels by free radical polymerization. Herein, a new approach to construct self-adhesive hydrogels by conducting free radical polymerization in both aqueous phase and micelle phase is developed. The following two-phase polymerization processes account for the formation of the self-adhesive hydrogels. The first one is the polymerization of acrylamide (AM) and dopamine (DA) in aqueous phase to form adhesive component PAM-PDA (PAM, polyacrylamide; PDA, polydopamine). The second one is the polymerization of hydrophobic monomer 2-methoxyethyl acrylate (MEA) in micelles of an amphiphilic block copolymer Pluronic F127 diacrylate (F127DA). The poly(2-methoxyethyl acrylate) (PMEA) networks help to maintain the high robustness of the hydrogel. Because PMEA and PDA form in relatively separated phases, the inhibition effect of PDA on the free radical polymerization process of PMEA is weakened. Based on this mechanism, mechanically strong and adhesive hydrogels are achieved. The introduced ions during preparation process, such as Na+, OH- and K+, endow the resulting hydrogels ionic conductivity. Resistive strain sensor of the hydrogel achieves a high gauge factor (GF) of 5.26, a response time of 0.25 s and high sensing stability. Because of the adhesiveness, such hydrogel sensor can be applied as wearable sensors in monitoring various human motions. To further address the freezing and drying problems of the hydrogels, organohydrogels are constructed in glycerol-water mixed solvent. The organohydrogels exhibit outstanding anti-freezing property and moisture retention ability, and their adhesiveness is well maintained in subzero conditions. Capacitive pressure sensors of the organohydrogels possessing a GF of 2.05 kPa-1, high sensing stability and reversibility, are demonstrated and explored in monitoring diverse human motions.
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Affiliation(s)
- Shuangli Li
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, PR China
| | - Hongwei Zhou
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, PR China.
| | - Yongfei Li
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, PR China
| | - Xilang Jin
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, PR China
| | - Hanbin Liu
- Shaanxi Provincal Key Laboratory of Papermaking Technology and Specialty Paper Development, College of Bioresource Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, PR China
| | - Jialiang Lai
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, PR China
| | - Yuanpeng Wu
- The Center of Functional Materials for Working Fluids of Oil and Gas Field, School of New Energy and Materials, Southwest Petroleum University 610500, China.
| | - Weixing Chen
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, PR China
| | - Aijie Ma
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, PR China
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13
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Zhang H, Shi T, Ma A. Recent Advances in Design and Preparation of Polymer-Based Thermal Management Material. Polymers (Basel) 2021; 13:2797. [PMID: 34451339 PMCID: PMC8400957 DOI: 10.3390/polym13162797] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/09/2021] [Accepted: 08/11/2021] [Indexed: 12/11/2022] Open
Abstract
The boosting of consumer electronics and 5G technology cause the continuous increment of the power density of electronic devices and lead to inevitable overheating problems, which reduces the operation efficiency and shortens the service life of electronic devices. Therefore, it is the primary task and a prerequisite to explore innovative material for meeting the requirement of high heat dissipation performance. In comparison with traditional thermal management material (e.g., ceramics and metals), the polymer-based thermal management material exhibit excellent mechanical, electrical insulation, chemical resistance and processing properties, and therefore is considered to be the most promising candidate to solve the heat dissipation problem. In this review, we summarized the recent advances of two typical polymer-based thermal management material including thermal-conduction thermal management material and thermal-storage thermal management material. Furtherly, the structural design, processing strategies and typical applications for two polymer-based thermal management materials were discussed. Finally, we proposed the challenges and prospects of the polymer-based thermal management material. This work presents new perspectives to develop advanced processing approaches and construction high-performance polymer-based thermal management material.
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Affiliation(s)
| | | | - Aijie Ma
- School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China; (H.Z.); (T.S.)
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14
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Liao Z, Ma M, Tong Z, Bi Y, Chung KL, Qiao M, Ma Y, Ma A, Wu G, Zhong X, Sun R. Fabrication of one-dimensional CoFe 2/C@MoS 2 composites as efficient electromagnetic wave absorption materials. Dalton Trans 2021; 50:11640-11649. [PMID: 34357366 DOI: 10.1039/d1dt01915e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New types of electromagnetic (EM) wave absorption materials with a light weight, strong absorption ability and wide absorption frequency have been widely explored. Nevertheless, it is still an intractable challenge to design the structure of the materials and rationalize multiple components. In this work, one-dimensional (1D) CoFe2/C@MoS2 composites were prepared via electrospinning technology, high-temperature carbonization and hydrothermal method. SEM and TEM images reveal that the as-prepared CoFe2/C fibers with a 1D structure are well coated with MoS2. The excellent absorption performance of the composites is mainly attributed to the 1D structure and the ideal impedance matching. CoFe2/C@MoS2 composites show strong absorption ability with an optimal reflection loss (RL) of -66.8 dB (13.28 GHz) at a matching thickness of 2.12 mm. Meanwhile, the composite possesses an effective absorption frequency range between 10.70 and 16.02 GHz with a bandwidth of 5.32 GHz. These results indicate that CoFe2/C@MoS2 composites will become promising lightweight and highly efficient MA materials.
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Affiliation(s)
- Zijian Liao
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China.
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15
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Liao Z, Ma M, Tong Z, Bi Y, Chung KL, Qiao M, Ma Y, Ma A, Wu G, Li Z, Zhang Y. Fabrication of one-dimensional ZnFe 2O 4@carbon@MoS 2/FeS 2 composites as electromagnetic wave absorber. J Colloid Interface Sci 2021; 600:90-98. [PMID: 34004433 DOI: 10.1016/j.jcis.2021.04.142] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 03/29/2021] [Revised: 04/28/2021] [Accepted: 04/29/2021] [Indexed: 01/17/2023]
Abstract
In this work, one-dimensional (1D) ZnFe2O4@carbon@MoS2/FeS2 composites were synthesized by hydrothermal method, magnetic-field-induced distillation-precipitation polymerization and high-temperature carbonization. The structure, morphology, composition, magnetic performance and electromagnetic (EM) wave absorbing properties of the composites were systematically studied. The composites show strong microwave absorption (MA) capacity with a minimum reflection loss (RLmin) value of -52.5 dB at 13.2 GHz, and have an effective absorption frequency range of 10.10-15.08 GHz with a bandwidth of 4.98 GHz when the thickness is 2.23 mm. It is expected that as-synthesized 1D ZnFe2O4@carbon@MoS2/FeS2 composites can be a promising EM wave absorption material.
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Affiliation(s)
- Zijian Liao
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Mingliang Ma
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China.
| | - Zhouyu Tong
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Yuxin Bi
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Kwok L Chung
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Mingtao Qiao
- Shaanxi Key Lab Nanomat & Technol, Xi'an University of Architecture & Technology, Xi'an 710021, People's Republic of China
| | - Yong Ma
- School of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, People's Republic of China
| | - Aijie Ma
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710021, People's Republic of China
| | - Guanglei Wu
- College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People's Republic of China
| | - Zongxuan Li
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Yu Zhang
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
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16
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Bi Y, Ma M, Liu Y, Tong Z, Wang R, Chung KL, Ma A, Wu G, Ma Y, He C, Liu P, Hu L. Microwave absorption enhancement of 2-dimensional CoZn/C@MoS 2@PPy composites derived from metal-organic framework. J Colloid Interface Sci 2021; 600:209-218. [PMID: 34030004 DOI: 10.1016/j.jcis.2021.04.137] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 04/27/2021] [Indexed: 10/21/2022]
Abstract
Metal-organic framework (MOF) materials have caused widespread concerns in the field of microwave absorption, due to the unique microstructure and electronic state. Herein, the CoZn/C@MoS2@polypyrrole (PPy) composites were prepared through MOF self-template method. The MoS2 sheets and PPy shell incorporated for optimizing impedance matching of two-dimensional (2D) CoZn/C composites. The introduction of MoS2 sheets and PPy shell endowed the composites with enhanced microwave absorption. The as-prepared CoZn/C@MoS2@PPy composites showed a minimum reflection loss (RL) of -49.18 dB with the thickness of 1.5 mm. In addition, the effective absorption bandwidth (EAB, RL values exceeding -10 dB) covered 4.56 GHz, which showed greater performances than CoZn/C composites under a lower thickness (<2 mm). This work not only provides a facile route for fabricating MOF-derived carbon-based composites as microwave absorbers, but also broadens the application of MOF materials.
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Affiliation(s)
- Yuxin Bi
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Mingliang Ma
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China.
| | - Yanyan Liu
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Zhouyu Tong
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Rongzhen Wang
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Kwok L Chung
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Aijie Ma
- School of Materials Science and Chemical Engineering, Xi'an Technological University, Xi'an 710021, People's Republic of China
| | - Guanglei Wu
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People's Republic of China
| | - Yong Ma
- School of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, People's Republic of China
| | - Changpeng He
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Pan Liu
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
| | - Luying Hu
- School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China
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17
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Ma A, Kim J, Miller CE, Mustapich TL, Abraham JP, Downie SA, Mishall PL. Pointing in a different direction: a case of bilateral absence of extensor indicis. Folia Morphol (Warsz) 2021; 81:520-525. [PMID: 33778941 DOI: 10.5603/fm.a2021.0030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 03/05/2021] [Indexed: 11/25/2022]
Abstract
Understanding anatomical variations, as well as, normal anatomy of the muscles and tendons of the hand is vital for successful clinical evaluation and surgery. A number of extensor muscle and tendon variations have been reported in the literature including duplication, triplication, and absence. We report a rare anatomical variation that includes bilateral absence of the extensor indicis (EI) muscles and bilateral duplication of the extensor digitorum (ED) tendon to the second digit in the forearm of an 83-year-old male cadaver during routine upper limbs dissection. In the present case, only three muscles were present in the deep compartment: extensor pollicis longus (EPL), extensor pollicis brevis (EPB), and abductor pollicis longus (APL) with bilateral absence of EI. The reported prevalence of bilateral absence of EI muscle and tendon ranges from 0.5 to 3.5% [1, 26]. The prevalence of an additional index tendon arising bilaterally from the ED muscle belly is 3.2 % of the population [1]. Extension of the index finger is governed by the actions of EI and ED. However, the four tendons of ED are linked to each other by juncturae tendinum (JT), restricting independent extension of the digits in certain postures, e.g. when the hand is fisted. With fisted hand, EI controls extension of the index finger. Clinically, EI tendons are used for tendon reconstruction procedures to restore function to the hand and thumb after trauma or tendon rupture. This report highlights the importance of anticipating anatomical variations and conducting pre-operative evaluations to confirm the presence of EI when planning tendon transfer procedures.
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Affiliation(s)
- A Ma
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - J Kim
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - C E Miller
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - T L Mustapich
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - J P Abraham
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States
| | - S A Downie
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States.,Department of Physical Medicine and Rehabilitation, Albert Einstein College of Medicine, Bronx, NY, United States
| | - P L Mishall
- Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, NY, United States. .,Department of Ophthalmology and Visual Sciences, Albert Einstein College of Medicine, Bronx, NY, United States.
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18
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Zhou H, Wang M, Jin X, Liu H, Lai J, Du H, Chen W, Ma A. Capacitive Pressure Sensors Containing Reliefs on Solution-Processable Hydrogel Electrodes. ACS Appl Mater Interfaces 2021; 13:1441-1451. [PMID: 33397087 DOI: 10.1021/acsami.0c18355] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Highly sensitive capacitive-type pressure sensor has been achieved by fabricating reliefs on solution-processable hydrogel electrodes. Hybrid PVA/PANI hydrogels (PVA, poly(vinyl alcohol); PANI, polyaniline) with a fully physically cross-linked binary network are selected as the electrodes of the pressure sensors. On the basis of the solution processability, reliefs are fabricated on the surface of PVA/PANI hydrogel electrodes by a template method. The gauge factor (GF) is enhanced by introducing reliefs and regulated by controlling the composition and relief dimension of hydrogel electrodes. The optimized pressure sensor containing reliefs achieves the highest GF of 7.70 kPa-1 and a sensing range of 0-7.4 kPa. Furthermore, the freezing and drying problems of the hydrogel sensors are overcome by introducing a binary solvent of water/glycerol and the pressure sensing ability at -18 °C has been achieved. Finally, monitoring of various pressures in daily life, such as joint bending, blowing, and brush writing, is demonstrated using such pressure sensors.
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Affiliation(s)
- Hongwei Zhou
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Mingcheng Wang
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Xilang Jin
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Hanbin Liu
- Shaanxi Provincal Key Laboratory of Papermaking Technology and Specialty Paper Development, College of Bioresource Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
| | - Jialiang Lai
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Haotian Du
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Weixing Chen
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
| | - Aijie Ma
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China
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19
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Jiang D, Hu X, Jin X, Ma A, Yin D. Oxidized nanoscale zero-valent iron changed the bioaccumulation and distribution of chromium in zebrafish. Chemosphere 2021; 263:128001. [PMID: 32828050 DOI: 10.1016/j.chemosphere.2020.128001] [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] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/09/2020] [Accepted: 08/10/2020] [Indexed: 06/11/2023]
Abstract
Influences of colloidal stabilities of nanoparticles (NPs) on the bioaccumulation of co-existing pollutants remains largely unknown. In this study, two oxidation products of nanoscale zero-valent iron (nZVI) with totally varied colloidal stabilities, termed highly oxidized nZVI (HO-nZVI) and lowly oxidized nZVI (LO-nZVI), were exposed to zebrafish with chromium (Cr); this approach was used to investigate the impacts of colloidal stability of oxidized nZVI on the bioaccumulation of Cr in zebrafish. A significant increase in the Cr and NP content in the viscera of fish in the presence of the oxidized nZVI after 20 days of exposure was confirmed, which indicated that Cr was consumed by fish through the uptake of the NPs. Furthermore, a significantly higher level of the HO-nZVI accumulated in the viscera in contrast to LO-nZVI, which suggested that the colloidal stability of NP is a crucial factor when evaluating the accessibility of NPs to zebrafish. Thus, HO-nZVI induced a significantly stronger enhancement of Cr content in fish than LO-nZVI. Our results suggest that oxidized nZVI will act as the carrier of co-existing heavy metals and change the transportation and distribution of heavy metals in zebrafish; moreover, the colloidal stability of NP will have a significant influence on the bioaccumulation of coexisting Cr.
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Affiliation(s)
- Danlie Jiang
- School of Materials and Chemical Engineering, Xi'an Technological University, 4 Jinhua Road, Xi'an, 710021, China; State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
| | - Xialin Hu
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
| | - Xilang Jin
- School of Materials and Chemical Engineering, Xi'an Technological University, 4 Jinhua Road, Xi'an, 710021, China
| | - Aijie Ma
- School of Materials and Chemical Engineering, Xi'an Technological University, 4 Jinhua Road, Xi'an, 710021, China
| | - Daqiang Yin
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China; State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
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20
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Zhao W, Hao N, Zhang G, Ma A, Chen W, Zhou H, Yang D, Xu BB, Kong J. In situ Carbon Modification of g-C3N4 from Urea co-Crystal with Enhanced Photocatalytic Activity Towards Degradation of Organic Dyes Under Visible Light. Chem Res Chin Univ 2020. [DOI: 10.1007/s40242-020-0073-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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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21
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Jiang D, Jin X, Ma A, Yin D. Predicting the aggregation tendency of oxidized nanoscale zero-valent iron in aquatic environments. Environ Sci Pollut Res Int 2020; 27:44177-44182. [PMID: 32761349 DOI: 10.1007/s11356-020-10337-7] [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] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
Predicting the aggregation tendency of nanoscale zero-valent iron (nZVI), oxidized nZVI, in particular, is crucial for the risk assessment of nZVI in aquatic environments. In this study, the comprehensive effects of the pH and ionic strength (IS) on the aggregation behaviors of two highly oxidized nZVIs (HO-nZVI) were examined. Compared with hematite nanoparticles, HO-nZVI presented a sudden acceleration in aggregation under critical conditions; moreover, the morphology of the HO-nZVI aggregates at pH and IS values higher or lower than the critical conditions was significantly different. Furthermore, owing to the differences in magnetization between the two prepared HO-nZVI samples, their critical coagulation conditions were significantly different. The significant changes in the aggregation behavior of the HO-nZVI samples were analyzed using colloidal theories, and the aggregation tendency of HO-nZVI under specific conditions could be simulated by calculating the theoretical critical conditions of aggregation via a method that takes into account the hydrochemical properties, magnetization, and surface charge of HO-nZVI. To examine the correctness of the method, we compared the experimentally determined colloidal stability of HO-nZVI in water samples collected from nearby rivers with the theoretically predicted value. The results indicated that the method was adequate for most situations, except for those in which the hydrochemical properties of the water samples were close to the critical coagulation conditions. Our study proposes a theoretical approach that is viable for simulating the colloidal stability of magnetic nanoparticles in aquatic environments; we anticipate that it will further facilitate the risk assessment of nanoparticles.
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Affiliation(s)
- Danlie Jiang
- School of Materials and Chemical Engineering, Xi'an Technological University, 4 Jinhua Road, Xi'an, 710021, China.
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China.
| | - Xilang Jin
- School of Materials and Chemical Engineering, Xi'an Technological University, 4 Jinhua Road, Xi'an, 710021, China
| | - Aijie Ma
- School of Materials and Chemical Engineering, Xi'an Technological University, 4 Jinhua Road, Xi'an, 710021, China
| | - Daqiang Yin
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, China
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22
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Luo L, Wang Y, Du Y, Dong C, Ma A, Wang T. MOG1 restores the expression and function of SCN5A-p.R104W through sec23a-mediated forward trafficking. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0344] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Brugada syndrome (BrS) is an inherited disease which causes fatal arrhythmias and sudden cardiac death. Mutations in SCN5A gene, which encoding cardiac sodium channel (NaV1.5), are the most common genotype of BrS patients. Some SCN5A-related variants were reported to retain NaV1.5 in endoplasmic reticulum (ER) due to trafficking deficiency. MOG1 was previously reported to interact with NaV1.5 and increased sodium current (INa) through enhancing the trafficking. However, its molecular mechanisms are still unclear. Coat protein complex II (COPII) is responsible for the ER to Golgi transport. Sec23 forms the inner coat of COPII and participates in cargo proteins selection.
Purpose
To demonstrate that MOG1 rescues SCN5A-related variants by enhancing the forward trafficking through Sec23a-NaV1.5 interaction.
Methods
Site directed mutagenesis, immunofluorescence staining, biotinylation assay, Western blot analysis and whole-cell patch clamp recording were used. CRISPR/Cas9 was used to knock out Sec23a expression in HEK293 cells.
Results
We found that SCN5A-p.R104W was characterized as reduced NaV1.5 level and lack of INa. The variant SCN5A-p.R104W was mainly distributed in ER. MOG1 could rescue the total and surface expression of SCN5A-p.R104W but could not restore INa (Figure 1a). Considering that most patients are heterozygous, co-transfection of SCN5A-WT and SCN5A-p.R104W were obtained. We found MOG1 could increase both NaV1.5 level and INa of heterozygous expressed SCN5A-p.R104W. We further revealed an interaction between NaV1.5 and Sec23a by co-immunoprecipitation (Co-IP) assay. The interaction between NaV1.5 and Sec23a was increased by MOG1, which indicates that Sec23a participates in MOG1-mediated increase in NaV1.5 level (Figure 1b). Knockout of Sec23a reduced cell surface, but not total, NaV1.5 level (Figure 1c and 1d). Next, the Sec23a knockout HEK293 cells were co-transfected with SCN5A-p.R104W and pcDNA3 or MOG1. MOG1 could not increase SCN5A-p.R104W protein level in Sec23a knockout cells.
Conclusion
Our data demonstrated a novel mechanism that MOG1 restores the expression and function of SCN5A-p.R104W by enhancing its forward trafficking through Sec23a-NaV1.5 interaction.
Figure 1
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Natural Science Foundation of China
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Affiliation(s)
- L Luo
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - Y Wang
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - Y Du
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - C Dong
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - A Ma
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
| | - T Wang
- First Hospital of Medical College of Xi'an Jiaotong University, Xi'an, China
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Xue Y, Ma Q, Chen S, Wang X, Ma A. U-shaped association of sphingosine-1-phosphate level with mortality in chronic systolic heart failure. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0953] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The immunomodulatory molecule sphingosine-1-phosphate (S1P) has received attention in the cardiovascular field due to its significant cardioprotective effects, as revealed in animal studies. Until now, it has been unclear what is the normal range of S1P in chronic heart failure patients and whether it is related to long term prognosis.
Purpose
The purpose of our study was to identify the distribution characteristics of S1P in systolic heart failure patients and the prognostic value of S1P for long-term prognosis.
Methods
We recruited 210 chronic systolic heart failure patients from June 2014 to December 2015. Meanwhile 54 healthy people in the same area were selected as controls. Plasma S1P was measured by mass spectrometry. Patients were grouped according to the baseline S1P level quartiles, and restricted cubic spline plots described a U-shaped association between S1P and all cause death. Cox proportional hazard analysis was used to determine the relationship between category of S1P and all-cause death. Survival curves were using the Kaplan-Meier method and the log-rank test was used for comparison.
Results
Compared with the control group, the plasma S1P in chronic heart failure patients demonstrated a higher mean level (1.269 μmol/L vs 1.122 μmol/L, P=0.006) and a larger standard deviation (0.441 vs 0.316, P=0.022). After a follow-up period of 31.7±10.3 months, the second quartile (0.967–1.192μml/L) with largely normal S1P levels had the lowest all-cause mortality and either an increase (HR=3.87, 95% CI 1.504–9.960, P=0.005, adjusted HR=3.134, 95% CI 1.211–8.111, P=0.019) or a decrease (HR=3.271, 95% CI 1.277–8.381, P=0.014, adjusted HR=1.90, 95% CI 0.711–5.083, P=0.200) predicted a worse prognosis.
Conclusions
Plasma S1P levels in systolic heart failure patients are related to the long-term all-cause mortality with a U-shaped correlation. Through restoring abnormal levels to a normal range instead of simply up regulation or down regulation, S1P may have the potential to be a therapeutic target for reducing the risk of death in patients with heart failure in the future.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Ministry of Science and Technology of the People's Republic of China. Ministry of Finance of the People's Republic of China.
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Affiliation(s)
- Y Xue
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
| | - Q Ma
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
| | - S Chen
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
| | - X Wang
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
| | - A Ma
- First Affiliated Hospital of Xi'an Jiaotong University, Department of Cardiovascular Medicine, Xi'an, China
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Zhou T, Wang L, Ma A, Zhang Y, Rui M. PMU26 The Health-Related Quality of Life in Different Disease Population Based on EQ-5D-5L: A Systematic Review. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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25
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Morita PP, Rocha AS, Shaker G, Lee D, Wei J, Fong B, Thatte A, Karimi A, Xu L, Ma A, Wong A, Boger J. Comparative Analysis of Gait Speed Estimation Using Wideband and Narrowband Radars, Thermal Camera, and Motion Tracking Suit Technologies. J Healthc Inform Res 2020; 4:215-237. [PMID: 35415448 PMCID: PMC8982681 DOI: 10.1007/s41666-020-00071-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Revised: 01/17/2020] [Accepted: 01/27/2020] [Indexed: 01/14/2023]
Abstract
AbstractResearch has shown that cognitive and physical functioning of older adults can be reflected in indicators such as walking speed. While changes in cognition, mobility, or health cause changes in gait speed, often gradual variations in walking speed go undetected until severe problems arise. Discrete clinical assessments during clinical consultations often fail to detect changes in day-to-day walking speeds and do not reflect walking speeds in everyday environments, where most of the mobility issues happen. In this paper, we compare four walking speed measurement technologies to a GAITRite mat (gold standard): (1) an ultra wideband radar (covering the band from 3.3 GHz to 10 GHz), (2) a narrow band 24-GHz radar (with a bandwidth of 250 MHz), (3) a perception Neuron Motion Tracking suit, and (4) a thermal camera. Data were collected in parallel using all sensors at the same time for 10 healthy adults for normal and slow walking paces. A comparison of the sensors indicates better performance at lower gait speeds, with offsets (when compared to GAITRite) between 0.1 and 20% for the ultra wideband radar, 1.9 and 17% for the narrowband radar, 0.1 and 38% for the thermal camera, and 1.7 and 38% for the suit. This paper supports the potential of unobtrusive radar-based sensors and thermal camera technologies for ambient autonomous gait speed monitoring for contextual, privacy-preserving monitoring of participants in the community.
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Affiliation(s)
- P. P. Morita
- School of Public Health and Health Systems, University of Waterloo, Waterloo, ON Canada
- Centre for Global eHealth Innovation, Techna Institute, University Health Network, Toronto, ON Canada
- Institute of Health Policy, Management, and Evaluation, University of Toronto, Toronto, ON Canada
- Research Institute for Aging, Waterloo, ON Canada
| | - A. S. Rocha
- School of Public Health and Health Systems, University of Waterloo, Waterloo, ON Canada
- Goiano Federal Institute, Trindade, GO Brazil
| | - G. Shaker
- Research Institute for Aging, Waterloo, ON Canada
- Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON Canada
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON Canada
- Waterloo Artificial Intelligence Institute, Waterloo, ON Canada
| | - D. Lee
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON Canada
| | - J. Wei
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - B. Fong
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON Canada
| | - A. Thatte
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - A. Karimi
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - L. Xu
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - A. Ma
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - A. Wong
- Research Institute for Aging, Waterloo, ON Canada
- Waterloo Artificial Intelligence Institute, Waterloo, ON Canada
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
| | - J. Boger
- Research Institute for Aging, Waterloo, ON Canada
- Department of Systems Design Engineering, University of Waterloo, Waterloo, ON Canada
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Hao JP, Ma A. The ratio of miR-21/miR-24 as a promising diagnostic and poor prognosis biomarker in colorectal cancer. Eur Rev Med Pharmacol Sci 2020; 22:8649-8656. [PMID: 30575905 DOI: 10.26355/eurrev_201812_16629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Optimal management of cancer treatment will be guided by sensitive and specific biomarkers. Searching for potential biomarkers is always a hot spot in cancer research, including colorectal cancer (CRC). MicroRNAs (miRNAs) have been recently proposed as biomarkers for cancers. PATIENTS AND METHODS Based on previous miRNA analysis in our hospital and data mining, we hypothesized that the ratio of miR-21/miR-24 (miR-21/24) may serve as plasma biomarkers in CRC patients. The plasma levels of miR-21 and miR-24 were analyzed from the 186 CRC patients before surgery and 97 healthy controls by qRT-PCR. Receiver operating characteristic (ROC) analysis was further used to evaluate the difference in diagnostic accuracy associated with the expression of miR-21, miR-24 and their ratio. Chi-square2-test or Fisher's exact test was performed to determine the relationship between the ratio of miR-21/24 and clinicopathological parameters. Kaplan-Meier and log-rank testing were performed to evaluate the effect of miR-21/24 ratio on the survival of colon cancer. Hazard ratios (HRs) and corresponding 95% confidence intervals (CIs) were calculated by Cox regression models. RESULTS ROC curves revealed that the diagnostic accuracy AUC (area under the curve) in CRC tissue of miR-24, miR-21, and the ratio of miR-21/24 were 0.8971, 0.9128 and 0.9875, respectively. Notably, the ratio of miR-21/24, with the best accuracy among these miRNAs, was significantly correlated with several important prognosis factors in CRC, such as tumor size, TNM stage, lymph metastasis and histologic differentiation (all p<0.05). By Kaplan-Meier survival analysis and Cox regression analysis, the ratio of miR-21/24 was shown to be a significant survival risk factor for CRC patients. CONCLUSIONS We showed that the plasma ratio of miR-21/24 is a potentially powerful tool for detecting CRC and predicting prognosis.
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Affiliation(s)
- J-P Hao
- Department of Colorectal Surgery, the Second Hospital of Tianjin Medical University, Hexi District, Tianjin, China.
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27
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Lai J, Zhou H, Jin Z, Li S, Liu H, Jin X, Luo C, Ma A, Chen W. Highly Stretchable, Fatigue-Resistant, Electrically Conductive, and Temperature-Tolerant Ionogels for High-Performance Flexible Sensors. ACS Appl Mater Interfaces 2019; 11:26412-26420. [PMID: 31257857 DOI: 10.1021/acsami.9b10146] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ionogels are ideal candidate materials for flexible sensors, but their stretchability and fatigue resistance are limited. Herein, highly stretchable, fatigue-resistant, electrically conductive, and temperature-tolerant ionogels are investigated and further applied in fabricating high-performance flexible sensors. The ionogels consist of a poly(acrylic acid) (PAA) network and a commonly used room-temperature ionic liquid (RTIL) named 1-ethyl-3-methylimidazolium dicyanamide ([EMIm][DCA]). Dually acrylated Pluronic F127 (F127DA) was utilized to cross-link the PAA network, and [EMIm][DCA] was physically confined in the PAA network. Because of their special cross-linking structure, the PAA ionogels are highly stretchable (>850%), tough, and fatigue-resistant, and they are also conductive, transparent, and temperature-tolerant because of the existence of [EMIm][DCA]. On the basis of their integrated performances, the PAA ionogels were further utilized to fabricate strain sensors and pressure sensors. The ionogel-based strain sensors have high sensitivity, low response time (200 ms), wide strain-sensing range (0-750%), excellent durability (>1400 cycles), and good temperature tolerance and can be applied to detect various human motions. The pressure sensors also have a high response speed (256 ms) and excellent sensitivity (GF = 0.73 kPa-1), which offers an opportunity to detect force generated by finger touching and water droplets.
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Affiliation(s)
- Jialiang Lai
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Hongwei Zhou
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Zhaoyang Jin
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Shuangli Li
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Hanbin Liu
- School of Bioresources Chemical and Materials Engineering , Shaanxi University of Science & Technology , Xi'an 710021 , P. R. China
| | - Xilang Jin
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Chunyan Luo
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Aijie Ma
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Weixing Chen
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
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28
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Yang J, Wang X, Zhang G, Ma A, Chen W, Shao L, Shen C, Xie K. High-Performance Solid Composite Polymer Electrolyte for all Solid-State Lithium Battery Through Facile Microstructure Regulation. Front Chem 2019; 7:388. [PMID: 31214571 PMCID: PMC6554539 DOI: 10.3389/fchem.2019.00388] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 05/14/2019] [Indexed: 11/13/2022] Open
Abstract
Solid composite polymer electrolytes are the optimal candidate for all solid-state lithium batteries, because of their enhanced ionic conductivities, long-life cycle ability and compatibility to lithium anode. Herein, we reported a kind of solid composite polymer electrolyte comprised of poly(ethylene oxide), graphitic-like carbon nitride and lithium perchlorate, which was prepared by a facile solution blending method. Microstructure of the solid composite polymer electrolyte was regulated by thermal annealing and interaction among components and was characterized by XRD, DSC, FTIR-ATR, and ROM. The obtained solid composite polymer electrolyte achieved an ionic conductivity as high as 1.76 × 10-5 S cm-1 at 25°C. And the electrochemical stable window and the lithium ion transference number, t+, were also obviously enhanced. LiFePO4/Li solid-state batteries with the annealed PEO-LiClO4-g-C3N4 solid polymer electrolyte presented a high initial discharge capacity of 161.2 mAh g-1 and superior cycle stability with a capacity retention ratio of 81% after 200 cycles at 1C at 80°C. The above results indicates that the thermal annealing treatment and g-C3N4 as a novel structure modifier is crucial for obtaining the high-performance solid composite polymer electrolytes used in the all solid-state lithium battery.
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Affiliation(s)
- Jingjing Yang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, China
| | - Xun Wang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, China
| | - Gai Zhang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, China
| | - Aijie Ma
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, China
| | - Weixing Chen
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, China
| | - Le Shao
- Shaanxi Coal Chemical Industry Technology Research Institute Co. Ltd., Xi'an, China
| | - Chao Shen
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Center for Nano Energy Materials, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, China
| | - Keyu Xie
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Center for Nano Energy Materials, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, China
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29
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Ma A, Wong DK, Feld J. A192 GRADE OF ACTIVITY AND FIBROSIS IS SIMILAR IN EAG- AND EAG+ IMMUNE ACTIVE HBV-INFECTED LIVER BIOPSIES. J Can Assoc Gastroenterol 2019. [DOI: 10.1093/jcag/gwz006.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Ma
- Division of Gastroenterology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - D K Wong
- Medicine, University Health Network University of Toronto, Toronto, ON, Canada
| | - J Feld
- Medicine, University Health Network University of Toronto, Toronto, ON, Canada
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30
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de Almeida TP, van Schie MMCH, Ma A, Tieves F, Younes SHH, Fernández-Fueyo E, Arends IWCE, Riul A, Hollmann F. Efficient Aerobic Oxidation of trans
-2-Hexen-1-ol using the Aryl Alcohol Oxidase from Pleurotus eryngii. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801312] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- T. P. de Almeida
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | | | - A. Ma
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | - F. Tieves
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | - S. H. H. Younes
- Department of Biotechnology; Delft University of Technology, The; Netherlands
- Department of Chemistry, Faculty of Science; Sohag University; Sohag 82524 Egypt
| | - E. Fernández-Fueyo
- Department of Biotechnology; Delft University of Technology, The; Netherlands
| | | | - A. Riul
- Department of Applied Physics, “Gleb Wataghin” Institute of Physics (IFGW); University of Campinas (UNICAMP), SP; Brazil
| | - F. Hollmann
- Department of Biotechnology; Delft University of Technology, The; Netherlands
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Jin X, Gao J, Xie P, Yu M, Wang T, Zhou H, Ma A, Wang Q, Leng X, Zhang X. Dual-functional probe based on rhodamine for sequential Cu 2+ and ATP detection in vivo. Spectrochim Acta A Mol Biomol Spectrosc 2018; 204:657-664. [PMID: 29982156 DOI: 10.1016/j.saa.2018.06.094] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 06/23/2018] [Accepted: 06/25/2018] [Indexed: 05/06/2023]
Abstract
A rhodamine-based fluorescent probe for Cu2+ and ATP has been designed. The fluorescence intensity/absorbance was significantly enhanced upon the addition of Cu2+ owning to the opening of the spiro-ring of rhodamine, which quickly returned to the original level due to the reconstruction of the probe by the reacting with ATP. Cu2+/ATP-induced fluorescent intensity/aborbance changes showed a good linear relationship with the concentration of Cu2+/ATP in the range of 2-20 μM/0-10 μM with a detection limit of 0.1 μM/1.0 μM. The proposed method is simple in design and fast in operation, and is suitable for the reversible monitoring of Cu2+ and ATP in bioanalytical applications.
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Affiliation(s)
- Xilang Jin
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China.
| | - Jingkai Gao
- School of Life Sciences and Technology, Xidian University, Xi'an, 710071, Shaanxi, China
| | - Pu Xie
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Mengchen Yu
- State and Local Joint Engineering Lab. of Advanced Network and Monitoring Controls, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Ting Wang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Hongwei Zhou
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China.
| | - Aijie Ma
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Qian Wang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Xin Leng
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710069, China
| | - Xianghan Zhang
- School of Life Sciences and Technology, Xidian University, Xi'an, 710071, Shaanxi, China.
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Wang Z, Zhou H, Chen W, Li Q, Yan B, Jin X, Ma A, Liu H, Zhao W. Dually Synergetic Network Hydrogels with Integrated Mechanical Stretchability, Thermal Responsiveness, and Electrical Conductivity for Strain Sensors and Temperature Alertors. ACS Appl Mater Interfaces 2018; 10:14045-14054. [PMID: 29608268 DOI: 10.1021/acsami.8b02060] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The first example of dually synergetic network hydrogel, which has integrated mechanical stretchability, thermal responsiveness, and electrical conductivity, has been constructed by a versatile and topological co-cross-linking approach. Poly( N-isopropylacrylamide) (PNIPAAm) is introduced as the thermally responsive ingredient, and polyaniline (PANI) is selected as the electrically conductive ingredient. PNIPAAm network is cross-linked by double-bond end-capped Pluronic F127 (F127DA). PANI network is doped and cross-linked by phytic acid. These two ingredients are further mechanically interlocked. Due to the integrated multiple functionalities, the topologically co-cross-linked hydrogels, as will be mentioned as F-PNIPAAm/PANI hydrogels, can be fabricated into resistive-type strain sensors. The strain sensors can achieve a gauge factor of 3.92, a response time of 0.4 s, and a sensing stability for at least 350 cycles and can be further applied for monitoring human motions, including motion of two hands, bending of joints, and even swallowing and pulse rate. Moreover, F-PNIPAAm/PANI hydrogels are utilized to construct efficient temperature alertors based on the disconnection of circuits induced by volume shrinkage at high temperature.
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Affiliation(s)
- Zhiwen Wang
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Hongwei Zhou
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Weixing Chen
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Qiuzhao Li
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Bo Yan
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Xilang Jin
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Aijie Ma
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
| | - Hanbin Liu
- School of Bioresources Chemical and Materials Engineering , Shaanxi University of Science & Technology , Xi'an 710021 , P. R. China
| | - Weifeng Zhao
- School of Materials and Chemical Engineering , Xi'an Technological University , Xi'an 710021 , P. R. China
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Ma A, Liu LW. A304 A CASE REPORT ILLUSTRATING THE NATURAL PROGRESSION OF TYPE 3 TO TYPE 2 ACHALASIA. J Can Assoc Gastroenterol 2018. [DOI: 10.1093/jcag/gwy009.304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- A Ma
- Gastroenterology, University of Toronto, Toronto, ON, Canada
| | - L W Liu
- Medicine, University Health Network, Toronto, ON, Canada
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34
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Lu Q, Bai L, Liu P, Wang Y, Huo J, Yuan Z, Du X, Ma A. Cardiac Rupture Complicating Acute Myocardial Infarction in the Percutaneous Coronary Intervention Era: Clinical Features. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.583] [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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35
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Powderly J, Patel M, Lee J, Brody J, Meric-Bernstam F, Hamilton E, Ponce Aix S, Garcia-Corbacho J, Bang YJ, Ahn MJ, Rha S, Kim KP, Gil Martin M, Wang H, Lazorchak A, Wyant T, Ma A, Agarwal S, Tuck D, Daud A. CA-170, a first in class oral small molecule dual inhibitor of immune checkpoints PD-L1 and VISTA, demonstrates tumor growth inhibition in pre-clinical models and promotes T cell activation in Phase 1 study. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx376.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Luo L, Ning F, Du Y, Song B, Yang D, Salvage SC, Wang Y, Fraser JA, Zhang S, Ma A, Wang T. Calcium-dependent Nedd4-2 upregulation mediates degradation of the cardiac sodium channel Nav1.5: implications for heart failure. Acta Physiol (Oxf) 2017; 221:44-58. [PMID: 28296171 DOI: 10.1111/apha.12872] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [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: 11/15/2016] [Revised: 12/08/2016] [Accepted: 03/03/2017] [Indexed: 12/18/2022]
Abstract
AIM Reductions in voltage-gated sodium channel (Nav1.5) function/expression provide a slowed-conduction substrate for cardiac arrhythmias. Nedd4-2, which is activated by calcium, post-translationally modulates Nav1.5. We aim to investigate whether elevated intracellular calcium ([Ca2+ ]i ) reduces Nav1.5 through Nedd4-2 and its role in heart failure (HF). METHODS Using a combination of biochemical, electrophysiological, cellular and in vivo methods, we tested the effect and mechanism of calcium on Nedd4-2 and in turn Nav1.5. RESULTS Increased [Ca2+ ]i , following 24-h ionomycin treatment, decreased sodium current (INa ) density and Nav1.5 protein without altering its mRNA in both neonatal rat cardiomyocytes (NRCMs) and HEK 293 cells stably expressing Nav1.5. The calcium chelator BAPTA-AM restored the reduced Nav1.5 and INa in NRCMs pre-treated by ionomycin. Nav1.5 was decreased by Nedd4-2 transfection and further decreased by 6-h ionomycin treatment. These effects were not observed in cells transfected with the catalytically inactive mutant, Nedd4-2 C801S, or with Y1977A-Nav1.5 mutant containing the impaired Nedd4-2 binding motif. Furthermore, elevated [Ca2+ ]i increased Nedd4-2, the interaction between Nedd4-2 and Nav1.5, and Nav1.5 ubiquitination. Nav1.5 protein is decreased, whereas Nedd4-2 is increased in volume-overload HF rat hearts, with increased co-localization of Nav1.5 with ubiquitin or Nedd4-2 as indicated by immunofluorescence staining. BAPTA-AM rescued the reduced Nav1.5 protein, INa and increased Nedd4-2 in hypertrophied NRCMs induced by isoproterenol or angiotensin II. CONCLUSION Calcium-mediated increases in Nedd4-2 downregulate Nav1.5 by ubiquitination. Nav1.5 is downregulated and co-localizes with Nedd4-2 and ubiquitin in failing rat heart. These data suggest a role of Nedd4-2 in Nav1.5 downregulation in HF.
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Affiliation(s)
- L. Luo
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - F. Ning
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - Y. Du
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - B. Song
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - D. Yang
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - S. C. Salvage
- Physiological Laboratory; University of Cambridge; Cambridge UK
| | - Y. Wang
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
| | - J. A. Fraser
- Physiological Laboratory; University of Cambridge; Cambridge UK
| | - S. Zhang
- Department of Biomedical and Molecular Sciences; Queen's University; Kingston Ontario Canada
| | - A. Ma
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
- Key Laboratory of Molecular Cardiology; Xi'an Shaanxi Province China
- Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University); Ministry of Education; Xi'an China
| | - T. Wang
- Department of Cardiovascular Medicine; First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China
- Key Laboratory of Molecular Cardiology; Xi'an Shaanxi Province China
- Key Laboratory of Environment and Genes Related to Diseases (Xi'an Jiaotong University); Ministry of Education; Xi'an China
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Jin X, Wu X, Liu L, Wang Z, Xie P, Ma A, Zhou H, Chen W. Dual-Functional Fluorescein-Based Chemosensor for Chromogenic Detection of Fe3+ and Fluorgenic Detection of HOCl. J Fluoresc 2017; 27:2111-2117. [DOI: 10.1007/s10895-017-2150-y] [Citation(s) in RCA: 5] [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] [Received: 04/09/2017] [Accepted: 07/31/2017] [Indexed: 12/23/2022]
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Muttusamy T, Ma A, Sinnerbrink I, Quinton AE, Peek MJ, Joung S. Prenatal sonographic features of cranioectodermal dysplasia. Prenat Diagn 2017; 37:628-630. [DOI: 10.1002/pd.5037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 01/10/2017] [Accepted: 03/14/2017] [Indexed: 11/12/2022]
Affiliation(s)
- T. Muttusamy
- Department of Obstetrics and Gynaecology at Nepean Hospital; New South Wales Australia
| | - A. Ma
- Department of Clinical Genetics; Nepean Hospital; New South Wales Australia
- Disciplines of Genetic Medicine, Child and Adolescent Health, Children's Hospital Westmead Clinical School; Sydney University; New South Wales Australia
| | - I. Sinnerbrink
- Department of Clinical Genetics; Nepean Hospital; New South Wales Australia
| | - A. E. Quinton
- Medical Sonography, School of Health, Medical and Applied Science; Central Queensland University; Australia
| | - M. J. Peek
- Medical School, College of Medicine, Biology and Environment; The Australian National University; Australia
| | - S. Joung
- Department of Obstetrics and Gynaecology at Nepean Hospital; New South Wales Australia
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Song L, Ma A, Dun H, Hu Y, Fujii Y, Kinugasa F, Oshima S, Higashi Y, Daloze P, Chen H. ASP2409, A Next-Generation CTLA4-Ig, Versus Belatacept in Renal Allograft Survival in Cynomolgus Monkeys. Am J Transplant 2017; 17:635-645. [PMID: 27598231 DOI: 10.1111/ajt.14039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Revised: 08/11/2016] [Accepted: 08/30/2016] [Indexed: 01/25/2023]
Abstract
Belatacept is the first costimulatory blockade agent approved for maintenance immunosuppression in kidney transplant recipients. Clinical results have indicated that belatacept is associated with superior renal function and improved metabolic profile; however, higher incidence of acute rejection and posttransplant lymphoproliferative disorder are the shortcomings of this agent. In this study, ASP2409, a new cytotoxic T-lymphocyte associated protein 4-immunoglobulin possessing 14-fold higher in vitro CD86 binding affinity than belatacept, was tested for renal allograft survival in cynomolgus monkeys. ASP2409 monotherapy dose-dependently prolonged renal allograft survival. Low-dose ASP2409 in combination with a subtherapeutic dose of tacrolimus showed much longer median survival time than monotherapy. Similar allograft survival results were observed in regimens based on high-dose ASP2409, belatacept, and therapeutic-dose tacrolimus. The results of renal allograft histopathology with high-dose ASP2409-based regimens were not inferior to the belatacept-based regimen. Moreover, higher frequencies of FoxP3-positive regulatory T cells in renal allografts were observed in ASP2409- and belatacept-based regimens compared with tacrolimus-based regimens. No serious side effects related to ASP2409 administration were found during the study. These data suggest that ASP2409 is a promising candidate for calcineurin inhibitor-sparing or -avoidance regimens.
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Affiliation(s)
- L Song
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - A Ma
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - H Dun
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - Y Hu
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - Y Fujii
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - F Kinugasa
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - S Oshima
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - Y Higashi
- Drug Discovery Research, Astellas Pharma Inc., Tsukuba, Japan
| | - P Daloze
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
| | - H Chen
- Department of Surgery, Research Center, CHUM, Notre-Dame Hospital, University of Montreal, Montreal, Quebec, Canada
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Zhou H, Liang F, Li J, Ding X, Ma A, Chen W, Luo C, Zhang G, Tian W, Cheng M, Liao B. RAFT polymerization and dually responsive behaviors of terpyridine-containing PNIPAAm copolymers in dilute solutions. REACT FUNCT POLYM 2016. [DOI: 10.1016/j.reactfunctpolym.2016.07.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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41
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Gray C, Hildrew A, Lu X, Ma A, McElroy D, Monteith D, O’Gorman E, Shilland E, Woodward G. Recovery and Nonrecovery of Freshwater Food Webs from the Effects of Acidification. ADV ECOL RES 2016. [DOI: 10.1016/bs.aecr.2016.08.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Studer P, da Silva CG, Revuelta Cervantes JM, Mele A, Csizmadia E, Siracuse JJ, Damrauer SM, Peterson CR, Candinas D, Stroka DM, Ma A, Bhasin M, Ferran C. Significant lethality following liver resection in A20 heterozygous knockout mice uncovers a key role for A20 in liver regeneration. Cell Death Differ 2015; 22:2068-77. [PMID: 25976305 PMCID: PMC4816110 DOI: 10.1038/cdd.2015.52] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 02/24/2015] [Accepted: 03/13/2015] [Indexed: 12/14/2022] Open
Abstract
Hepatic expression of A20, including in hepatocytes, increases in response to injury, inflammation and resection. This increase likely serves a hepatoprotective purpose. The characteristic unfettered liver inflammation and necrosis in A20 knockout mice established physiologic upregulation of A20 as integral to the anti-inflammatory and anti-apoptotic armamentarium of hepatocytes. However, the implication of physiologic upregulation of A20 in modulating hepatocytes' proliferative responses following liver resection remains controversial. To resolve the impact of A20 on hepatocyte proliferation and the liver's regenerative capacity, we examined whether decreased A20 expression, as in A20 heterozygous knockout mice, affects outcome following two-third partial hepatectomy. A20 heterozygous mice do not demonstrate a striking liver phenotype, indicating that their A20 expression levels are still sufficient to contain inflammation and cell death at baseline. However, usually benign partial hepatectomy provoked a staggering lethality (>40%) in these mice, uncovering an unsuspected phenotype. Heightened lethality in A20 heterozygous mice following partial hepatectomy resulted from impaired hepatocyte proliferation due to heightened levels of cyclin-dependent kinase inhibitor, p21, and deficient upregulation of cyclins D1, E and A, in the context of worsened liver steatosis. A20 heterozygous knockout minimally affected baseline liver transcriptome, mostly circadian rhythm genes. Nevertheless, this caused differential expression of >1000 genes post hepatectomy, hindering lipid metabolism, bile acid biosynthesis, insulin signaling and cell cycle, all critical cellular processes for liver regeneration. These results demonstrate that mere reduction of A20 levels causes worse outcome post hepatectomy than full knockout of bona fide liver pro-regenerative players such as IL-6, clearly ascertaining A20's primordial role in enabling liver regeneration. Clinical implications of these data are of utmost importance as they caution safety of extensive hepatectomy for donation or tumor in carriers of A20/TNFAIP3 single nucleotide polymorphisms alleles that decrease A20 expression or function, and prompt the development of A20-based liver pro-regenerative therapies.
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Affiliation(s)
- P Studer
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Department of Visceral Surgery and Medicine, University Hospital Bern, Bern, Switzerland
| | - C G da Silva
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - J M Revuelta Cervantes
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - A Mele
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - E Csizmadia
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - J J Siracuse
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - S M Damrauer
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - C R Peterson
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - D Candinas
- Department of Visceral Surgery and Medicine, University Hospital Bern, Bern, Switzerland
| | - D M Stroka
- Department of Visceral Surgery and Medicine, University Hospital Bern, Bern, Switzerland
| | - A Ma
- Division of Interdisciplinary Medicine and Biotechnology, Bioinformatics core, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - M Bhasin
- Division of Gastroenterology, Department of Medicine, University of California in San Francisco, San Fransisco, CA, USA
| | - C Ferran
- Division of Vascular Surgery, Center for Vascular biology Research and the Transplant Institute, Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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Dong Y, Huang J, Li G, Li L, Li W, Li X, Liu X, Liu Z, Lu Y, Ma A, Sun H, Wang H, Wen X, Xu D, Yang J, Zhang J, Zhao H, Zhou J, Zhu L, Committee Members:, Bai L, Cao K, Chen M, Chen M, Dai G, Ding W, Dong W, Fang Q, Fang W, Fu X, Gao W, Gao R, Ge J, Ge Z, Gu F, Guo Y, Han H, Hu D, Huang W, Huang L, Huang C, Huang D, Huo Y, Jin W, Ke Y, Lei H, Li X, Li Y, Li D, Li G, Li X, Li Z, Liang Y, Liao Y, Liu G, Ma A, Ma C, Ma D, Ma Y, Shen L, Sun J, Sun C, Sun Y, Tang Q, Wan Z, Wang H, Wang J, Wang S, Wang D, Wang G, Wang J, Wu Y, Wu P, Wu S, Wu X, Wu Z, Yang J, Yang T, Yang X, Yang Y, Yang Z, Ye P, Yu B, Yuan F, Zhang S, Zhang Y, Zhang R, Zhang Y, Zhang Y, Zhao S, Zhou X. Guidelines for the prevention, diagnosis, and treatment of infective endocarditis in adults: The Task Force for the Prevention, Diagnosis, and Treatment of Infective Endocarditis in Adults of Chinese Society of Cardiology of Chinese Medical Association, and of the Editorial Board of Chinese Journal of Cardiology. Eur Heart J Suppl 2015. [DOI: 10.1093/eurheartj/suv031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Ma A, Wang Y, Zhang Q. Tormentic acid reduces inflammation in BV-2 microglia by activating the liver X receptor alpha. Neuroscience 2014; 287:9-14. [PMID: 25497374 DOI: 10.1016/j.neuroscience.2014.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 12/03/2014] [Accepted: 12/03/2014] [Indexed: 01/18/2023]
Abstract
Tormentic acid (TA) has been reported to have anticancer, anti-inflammatory and anti-atherogenic properties. However, the effects of TA on neuroinflammation have not been reported. In this study, we investigated whether TA inhibited lipopolysaccharide (LPS)-induced inflammatory response in BV2 microglia cells. BV2 microglia cells were treated with TA for 1h before exposure to LPS. The expression of inducible nitric oxide synthase (iNOS), Cyclooxygenase-2 (COX-2), Nuclear factor κB (NF-κB) and liver X receptor alpha (LXRα) was detected by western blotting. The expression of cytokines Tumor necrosis factor-alpha (TNF-α) and interleukin 1beta (IL-1β) was detected by enzyme-linked immunosorbent assays (ELISA). Results showed that TA inhibited nitric oxide (NO), prostaglandin E2 (PGE2) production by inhibiting iNOS and COX-2 expression. TA also inhibited LPS-induced inflammatory cytokines TNF-α and IL-1β expression. Furthermore, TA could activate LXRα and inhibit LPS-induced NF-κB activation. Knowdown of LXRα reversed the anti-inflammatory effects of TA. In conclusion, our results indicate that TA exerts an anti-inflammatory effect on LPS-stimulated BV2 microglia cells by activating LXRα.
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Affiliation(s)
- A Ma
- Department of Neurology, He Bei Provincial Chest Hospital, Shi Jiazhuang 050000, China
| | - Y Wang
- Department of Nephrology, He Bei Provincial Chest Hospital, Shi Jiazhuang 050000, China
| | - Q Zhang
- Department of Neurology, He Bei Provincial Chest Hospital, Shi Jiazhuang 050000, China.
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Buckner TW, Nielsen BI, Key NS, Ma A. Factor VIII inhibitory antibody in a patient with combined factor V/factor VIII deficiency. Haemophilia 2014; 21:e77-80. [PMID: 25472918 DOI: 10.1111/hae.12557] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/15/2014] [Indexed: 01/23/2023]
Affiliation(s)
- T W Buckner
- Harold R. Roberts Comprehensive Hemophilia and Thrombosis Center, University of North Carolina, Chapel Hill, NC, USA
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Pocoski J, Ma A, Kessler CM, Boklage S, Humphries TJ. Cardiovascular comorbidities are increased in US patients with haemophilia A: a retrospective database analysis. Haemophilia 2013; 20:472-8. [DOI: 10.1111/hae.12339] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2013] [Indexed: 01/14/2023]
Affiliation(s)
- J. Pocoski
- Global Health Economics and Outcomes Research; Bayer HealthCare; Whippany NJ USA
| | - A. Ma
- Department of Medicine, University of North Carolina at Chapel Hill; Chapel Hill NC USA
| | - C. M. Kessler
- Department of Medicine, Georgetown University Medical Center; Washington DC USA
| | - S. Boklage
- Health Economics and Outcomes Research; Otsuka America Pharmaceutical, Inc. Princeton; NJ USA
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Lim MY, Nielsen B, Ma A, Key NS. Clinical features and management of haemophilic pseudotumours: a single US centre experience over a 30-year period. Haemophilia 2013; 20:e58-62. [DOI: 10.1111/hae.12295] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/07/2013] [Indexed: 11/30/2022]
Affiliation(s)
- M. Y. Lim
- Division of Hematology/Oncology; Department of Medicine; University of Chapel Hill; Chapel Hill NC USA
| | - B. Nielsen
- UNC Hemophilia and Thrombosis Center; Chapel Hill NC USA
| | - A. Ma
- Division of Hematology/Oncology; Department of Medicine; University of Chapel Hill; Chapel Hill NC USA
- UNC Hemophilia and Thrombosis Center; Chapel Hill NC USA
| | - N. S. Key
- Division of Hematology/Oncology; Department of Medicine; University of Chapel Hill; Chapel Hill NC USA
- UNC Hemophilia and Thrombosis Center; Chapel Hill NC USA
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Nocturne G, Boudaoud S, Miceli Richard C, Viengchareun S, Lazure T, Nititham J, Taylor KE, Criswell LA, Ma A, Busato F, Melki J, Dubost JJ, Hachulla E, Gottenberg JE, Lombes M, Tost J, Mariette X. OP0023 Germinal and Somatic Genetic Variants of TNFAIP3 Promote Lymphomagenesis Process Complicating Primary Sjögren’s Syndrome. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.228] [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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Garg A, Ahmed M, Childs E, Ma A, Gaffen S. P069 Inhibition of IL-17 receptor signal transduction. Cytokine 2012. [DOI: 10.1016/j.cyto.2012.06.155] [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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Teki R, Kadaksham AJ, House M, Harris-Jones J, Ma A, Babu SV, Hariprasad A, Dumas P, Jenkins R, Provine J, Richmann A, Stowers J, Meyers S, Dietze U, Kusumoto T, Yatsui T, Ohtsu M, Goodwin F. Alternative smoothing techniques to mitigate EUV substrate defectivity. ACTA ACUST UNITED AC 2012. [DOI: 10.1117/12.916497] [Citation(s) in RCA: 8] [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: 11/14/2022]
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