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Kong H, Cao J, Tian J, Yong J, An J, Zhang L, Song X, He Y. Coronary microvascular dysfunction: prevalence and aetiology in patients with suspected myocardial ischaemia. Clin Radiol 2024; 79:386-392. [PMID: 38433042 DOI: 10.1016/j.crad.2024.01.010] [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: 03/14/2023] [Revised: 09/19/2023] [Accepted: 01/09/2024] [Indexed: 03/05/2024]
Abstract
AIM To evaluate the prevalence, aetiology, and corresponding morbidity of coronary microvascular dysfunction (CMD) in patients with suspected myocardial ischaemia. MATERIALS AND METHODS The present study included 115 patients with suspected myocardial ischaemia who underwent stress perfusion cardiac magnetic resonance imaging. CMD was assessed visually based on the myocardial perfusion results. The CMR-derived myocardial perfusion reserve index (MPRI) and left ventricular (LV) strain parameters obtained using the post-processing software CVI42 were employed to evaluate LV myocardial perfusion and deformation. LV strain parameters included global longitudinal, circumferential, and radial strain (GLS, GCS, and GRS), global systolic/diastolic longitudinal, circumferential, and radial strain rates (SLSR, SCSR, SRSR, DLSR, DCSR, and DRSR). RESULTS Of the 115 patients, 12 patients were excluded and 103 patients were finally included in the study. CMD was observed in 79 % (81 patients, aged 53 ± 12 years) of patients. Regarding aetiology, 91 (88 %) patients had non-obstructive coronary artery disease (CAD), eight (8 %) had obstructive CAD, and four (4 %) had hypertrophic cardiomyopathy (HCM). The incidence of CMD was highest (100 %) in patients with HCM, followed by those with non-obstructive CAD (up to 79 %). There were no statistical differences between CMD and non-CMD groups in GCS, GRS, GLS, SRSR, SCSR, SLSR, DCSR, DRSR and DLSR. CONCLUSION The incidence of CMD was higher in patients with signs and symptoms of ischaemia. CMD occurred with non-obstructive CAD, obstructive CAD, and HCM, with the highest prevalence of CMD in HCM.
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Affiliation(s)
- H Kong
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - J Cao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - J Tian
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - J Yong
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - J An
- Siemens Shenzhen Magnetic Resonance, MR Collaboration NE Asia, Shenzhen, China
| | - L Zhang
- Department of Radiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - X Song
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
| | - Y He
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
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Han Y, An J, Yuan M, Fang J, Zhang J, Liang L, Liu Y. Covalent Coupling Assisted Hydrophilic Perovskite Spheres for Ratiometric Fluorescent Visual Multichannel Immunoassay. Adv Healthc Mater 2024; 13:e2303845. [PMID: 38117032 DOI: 10.1002/adhm.202303845] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/13/2023] [Indexed: 12/21/2023]
Abstract
Quantitative fluorescence immunoassay is essential for the construction of biosensing mechanisms and the quantification of trace markers. But the interference problems caused by low fluorescence efficiency and broad fluorescence spectrum of fluorescent probes have hindered the continued development of ratiometric fluorescence sensing in biosensing. Perovskite materials, with ultra-high color purity (FWHM < 30 nm) and photoluminescence quantum yield (PLQY) (close to 100%), are expected to be next-generation fluorescent probes. However, poor water stability and biocompatibility are still non-negligible in biosensor applications. In this work, hyperstatic perovskite fluorescent microspheres prepared by swelling-shrinking method can be used as ratiometric fluorescence signals and biological immunoassay platforms. Meanwhile, inspired by p-aminophenol (AP) controlled synthesis and the catalytic reaction of 4-aminophenol phosphate (APP) triggered by alkaline phosphatase (ALP), a strategy to prepare fluorescent nanoparticles as fluorescence signals for ALP detection is proposed. Most importantly, it is proposed for the first time to combine this enzymatic fluorescence with perovskite materials using covalent linkage to create a novel cascade immunoassay and use it for quantitative and visualization determination of hepatitis B surface antigen (HBsAg) for application verification. These results indicate the biosensing potential of perovskite materials and provide a pathway for high sensitivity enzyme detection and enzyme triggered immune detection.
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Affiliation(s)
- Yaqin Han
- Key Laboratory of Optoelectronic Technology & Systems, Ministry of Education, Chongqing University, Chongqing, 400044, China
- Center for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
| | - Jia An
- School of Optoelectronic Engineering, Chongqing university of Posts and Telecommunications, Chongqing, 400065, China
| | - Mengdi Yuan
- Key Laboratory of Optoelectronic Technology & Systems, Ministry of Education, Chongqing University, Chongqing, 400044, China
- Center for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
| | - Junan Fang
- Key Laboratory of Optoelectronic Technology & Systems, Ministry of Education, Chongqing University, Chongqing, 400044, China
- Center for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
| | - Jiajing Zhang
- Key Laboratory of Optoelectronic Technology & Systems, Ministry of Education, Chongqing University, Chongqing, 400044, China
- Center for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
| | - Lanju Liang
- School of Opto-Electronic Engineering, Zaozhuang University, Zaozhuang, 277160, China
| | - Yufei Liu
- Key Laboratory of Optoelectronic Technology & Systems, Ministry of Education, Chongqing University, Chongqing, 400044, China
- Center for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
- Faculty of Science and Engineering, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
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Kong H, Cao J, Tian J, Yong J, An J, Song X, He Y. Relationship between coronary microvascular dysfunction (CMD) and left ventricular diastolic function in patients with symptoms of myocardial ischemia with non-obstructive coronary artery disease (INOCA) by cardiovascular magnetic resonance feature-tracking. Clin Radiol 2024:S0009-9260(24)00129-6. [PMID: 38679491 DOI: 10.1016/j.crad.2024.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 02/18/2024] [Accepted: 02/20/2024] [Indexed: 05/01/2024]
Abstract
AIM To investigate whether there was an association between coronary microvascular dysfunction (CMD) and left ventricular (LV) diastolic function in patients with myocardial ischemia with non-obstructive coronary artery disease (INOCA). MATERIALS AND METHODS Our study included 115 subjects with suspected myocardial ischemia that underwent stress perfusion cardiac magnetic resonance (CMR). They were divided into non-CMD and CMD two groups. CMR-derived volume-time curves and CMR-FT parameters were used to assess LV diastolic function using CVI42 software. The latter included global/regional LV peak longitudinal, circumferential, radial diastolic strain rate (LDSR, CDSR, RDSR). Logistic regression analysis was performed with CMR-FT strain parameters as independent variables and CMD as dependent variables, and the effect value was expressed as an odds ratio (OR). RESULTS Of the 115 patients, we excluded data from 23 patients and 92 patients (56.5% male;52 ± 12 years) were finally included in the study. Of these, 19 patients were included in the non-CMD group (49 ± 11 years) and CMD group included 73patient (52 ± 12 years). The regional CDSR (P=0.019), and regional RDSR (P=0.006) were significantly lower in the CMD group than in non-CMD group. But, regional LDSR in CMD group was higher than non-CMD (P=0.003). In logistic regression analysis, regional LDSR (adjusted β= 0.1, 95%CI 0.077, 0.349, p=0.002) and RDSR (adjusted β= 0.1, 95 % CI 0.066, 0.356, p=0.004) were related to CMD. CONCLUSIONS LV myocardial perfusion parameter MPRI was negatively correlated with LV diastolic function (CDSR) which needs to take into account the degree of diastolic dysfunction.
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Affiliation(s)
- H Kong
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - J Cao
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - J Tian
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - J Yong
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - J An
- Siemens Shenzhen Magnetic Resonance, MR Collaboration NE Asia, Shenzhen, China
| | - X Song
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
| | - Y He
- Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China.
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Bu YJ, Cen X, Wang YQ, Fan R, Zhang F, Liu YQ, An J, Qiao J, Zhang SX, Chen JW. Study on the expression changes of lncRNA in patients with systemic lupus erythematosus and its correlation with Treg cells. Clin Rheumatol 2024; 43:993-1002. [PMID: 38253780 DOI: 10.1007/s10067-023-06844-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 01/24/2024]
Abstract
OBJECTIVES We initially explored the link between the differentially expressed long non-coding RNAs (lncRNAs) and the number of regulatory T (Treg) cells by detecting the lncRNA expression profiles in patients with systemic lupus erythematosus (SLE), then analyzed the correlation between Treg-related lncRNAs and the clinical features of SLE patients, predicting the mechanism by which lncRNAs regulate the differentiation and development of Treg cells, and provided new ideas for the treatment of SLE. METHODS Peripheral blood of 9 active SLE patients were collected and mononuclear cells (PBMCs) were extracted; the lncRNA expression profiles of PBMCs were analyzed by whole transcriptome sequencing. Nine healthy people were used as controls to screen the differentially expressed lncRNAs, to analyze the correlation between lncRNAs and Treg cell number. Pearson test was used to analyze the correlation between lncRNAs and the number of Treg cell, and the correlation between Treg-associated lncRNA and SLEDAI score, ESR, C3, and C4 in SLE patients. The targeted genes of Treg-associated lncRNAs were predicted with miRcode and Targetscan databases and coexpression network. RESULTS There were 240 differentially expressed lncRNAs in SLE patients compared with healthy controls, including 134 highly expressed lncRNAs (p < 0.05) and 106 lowly expressed lncRNAs (p < 0.05). The expression of ANKRD44-AS1 (r = 0.7417, p = 0.0222), LINC00200 (r = 0.6960, p = 0.0373), AP001363.2 (r = 0.7766, p = 0.0138), and LINC02824 (r = 0.7893, p = 0.0114) were positively correlated with the number of Treg cell, and the expression of AP000640.1 (r = - 0.7225, p = 0.0279), AC124248.1 (r = - 0.7653, p = 0.0163), LINC00482 (r = - 0.8317, p = 0.0054), and MIR503HG (r = - 0.7617, p < 0.05) were negatively correlated with the number of Treg cell. Among these Treg-associated lncRNAs, the expression of LINC00482 (r = - 0.7348, p < 0.05) and MIR503 HG (r = - 0.7617, p < 0.05) were negatively correlated with C3. LINC00200, ANKRD44 - AS1, and AP000640.1 related to Treg cells regulate the expression of signal transducer and activator of transcription 5 (STAT5), phospholipase D1 (PLD1), homeodomain-only protein X (HOPX), and runt-related transcription factor 3 (RUNX3) through competitive binding of miRNA or trans-regulatory mechanism, thereby regulating the differentiation and development of Treg cell. CONCLUSIONS The lncRNA expression profiles were changed in SLE patients, the differentially expressed lncRNAs were associated with abnormal number and function of Treg cells in SLE, and Treg-associated lncRNAs were associated with SLE-disease activity, which may affect the expression of STAT5, PLD1, HOPX, RUNX3 and regulate Treg cell function and participate in the pathogenesis and progression of SLE by competitively binding to miRNAs or trans-regulatory mechanism. Key points • Systemic lupus erythematosus (SLE) is an autoimmune disease involving multiple organs and systems. lncRNAs may affect Treg cells function by regulating genes expression, which may be an important pathogenesis of SLE. • This study, taking SLE as an example, preliminarily analyzed the correlation between lncRNA and Treg cells in SLE patients, analyzed the correlation between Treg-related lncRNA and the clinical characteristics of SLE, and speculated that lncRNA could regulate the differentiation and development of Treg cells through competitive combination with miRNA or trans-regulatory mechanisms. • It is possible to target epigenetic therapy for SLE.
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Affiliation(s)
- Yu-Jie Bu
- Department of Rheumatology and Immunology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Xing Cen
- Department of Rheumatology and Immunology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Yi-Qi Wang
- Department of Rheumatology and Immunology, Xi'an No.3 Hospital, the Affiliated Hospital of Northwest University, Xi'an, Shaanxi, 710018, People's Republic of China
| | - Ru Fan
- Department of Rheumatology and Immunology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Fen Zhang
- Department of Rheumatology and Immunology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Yu-Qing Liu
- Department of Rheumatology and Immunology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Jia An
- Department of Rheumatology and Immunology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Jun Qiao
- Department of Rheumatology and Immunology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Sheng-Xiao Zhang
- Department of Rheumatology and Immunology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, People's Republic of China
| | - Jun-Wei Chen
- Department of Rheumatology and Immunology, the Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, 030001, People's Republic of China.
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Yang D, An J, Qiu W, Gao Y, Zhang J, Pan W, Zhao P, Liu Y. Self-calibrating dual-sensing electrochemical sensors for accurate detection of carbon dioxide in blood. Mikrochim Acta 2023; 191:22. [PMID: 38091089 DOI: 10.1007/s00604-023-06101-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 11/09/2023] [Indexed: 12/18/2023]
Abstract
A paper-based electrochemical dual-function biosensor capable of determining pH and TCO2 was synthesized for the first time using an iridium oxide pH electrode and an all-solid-state ion electrode (ASIE). In the study, to obtain highly reliable results, the biosensor was equipped with a real-time pH correction function before TCO2 measurements. Compared to traditional liquid-filling carbon dioxide detection sensors, the utilization of ferrocene endows our novel sensor with abundant positive sites, and thus greatly improves its performance. Conversely, the introduction of MXene with conductivity close to that of metals reduces electrode resistance, which is beneficial for accelerating the electrochemical reaction of the sensor and reducing LOD. After optimization, the detection range of TCO2 is 0.095 nM-0.66 M, with a detection limit of as low as 0.023 nM. In addition, the sensor was used in real serum sample-spiked recovery experiments and comparison experiments with existing clinical blood gas analyzers, which confirmed the effectiveness of its clinical application. This study provides a method for the rational design of paper-based electrochemical biosensors and a new approach for the clinical detection of blood carbon dioxide.
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Affiliation(s)
- Da Yang
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing, 400044, China
| | - Jia An
- School of Microelectronics, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Wu Qiu
- School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, 400015, China
| | - Yuhan Gao
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing, 400044, China
- School of Microelectronics, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jiajing Zhang
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing, 400044, China
- Center for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China
| | - Wencai Pan
- Department of Medical Engineering, Xinqiao Hospital, 183 Xinqiao Main Street, Chongqing, 400037, China
| | - Peng Zhao
- National Innovation Center for Advanced Medical Devices, 40F, Huide Tower, Shenzhen, 518126, China
| | - Yufei Liu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing, 400044, China.
- Center for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing, 400044, China.
- Faculty of Science and Engineering, Swansea University, Singleton Park, Swansea, SA2 8PP, UK.
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Du B, Zhang W, Shao X, An J, Ma H, Zhao X, Xu L, An D, Tian Y, Dong Y, Niu H. "Triple-low" radiation dose bronchial artery CT angiography before bronchial artery embolisation: a feasibility study. Clin Radiol 2023; 78:e1017-e1022. [PMID: 37813755 DOI: 10.1016/j.crad.2023.09.005] [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: 03/28/2023] [Revised: 09/01/2023] [Accepted: 09/12/2023] [Indexed: 10/11/2023]
Abstract
AIM To explore the feasibility of a "triple-low" dose (low tube voltage, low tube current, and low contrast agent volume) bronchial artery computed tomography (CT) angiography (CTA) to replace routine dose bronchial artery CTA before bronchial artery embolisation (BAE). MATERIALS AND METHODS CTA was obtained from 60 patients with body mass index (BMI) < 30 kg/m2 using a 256 multi-section iCT system, and they were divided into two groups: (1) group A: 100 kVp, 100 mAs, 50 ml contrast medium (CM); (2) group B: 120 kVp, automatic tube current modulation (ACTM), 80 ml CM. CT attenuation of the thoracic aorta, image noise, signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) were calculated, and subjective image quality scores and traceability scores assessed. The effective radiation dose was calculated. RESULTS The radiation dose was reduced by 79.7% in group A compared to group B (p<0.05). The CT attenuation of the thoracic aorta was increased by approximately 13% in group A compared to group B (p<0.05). Higher image noise, lower SNR, and CNR were obtained in group A compared to group B (all p<0.05). Both subjective image quality scores and traceability scores did not differ between groups A and B (both p>0.05). CONCLUSION It is feasible to use the "triple-low" dose CTA protocol for patients with a body mass index (BMI) < 30 kg/m2. The radiation dose was reduced by 79.7%, and the dose of contrast medium was reduced by 37.5% to ensure the diagnostic value.
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Affiliation(s)
- B Du
- Department of Radiology, Hebei Medical University, No. 361 Zhongshan East Road, Shijiazhuang, 050011, Hebei, China
| | - W Zhang
- Chengde Medical University, Anyuan Road, Chengde, 067000, Hebei, China
| | - X Shao
- Department of Radiology, Hebei Medical University, No. 361 Zhongshan East Road, Shijiazhuang, 050011, Hebei, China
| | - J An
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China
| | - H Ma
- Chengde Medical University, Anyuan Road, Chengde, 067000, Hebei, China
| | - X Zhao
- Department of Radiology, Hebei Medical University, No. 361 Zhongshan East Road, Shijiazhuang, 050011, Hebei, China
| | - L Xu
- Department of Radiology, Hebei Medical University, No. 361 Zhongshan East Road, Shijiazhuang, 050011, Hebei, China
| | - D An
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China
| | - Y Tian
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China
| | - Y Dong
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China
| | - H Niu
- Department of Interventional Treatment, First Hospital of Qinhuangdao, No. 258 Wenhua Road, Qinhuangdao, 066099, Hebei, China.
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Tan SSY, Shanmugham M, Chin YL, An J, Chua CK, Ong ES, Leo CH. Pressurized Hot Water Extraction of Mangosteen Pericarp and Its Associated Molecular Signatures in Endothelial Cells. Antioxidants (Basel) 2023; 12:1932. [PMID: 38001785 PMCID: PMC10669822 DOI: 10.3390/antiox12111932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/17/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023] Open
Abstract
The mangosteen (Garcinia mangostana L.) pericarp is known to be rich in potent bioactive phytochemical compounds such as xanthones, which possess pharmacologically important antioxidant activity and beneficial cardiometabolic properties. Mangosteen pericarp is typically classified as unavoidable food waste and discarded, despite being rich in bioactive phytochemical compounds that therefore present an exciting opportunity for valorization. Thus, this study aims to extract phytochemical compounds from mangosteen pericarp using pressurized hot water extraction (PHWE) and determine its biological effects in endothelial cells using RNA sequencing. Liquid chromatography with MS/MS (LC/MSMS) and UV detection (LC/UV) was subsequently used to identify three key phytochemical compounds extracted from the mangosteen pericarp: α-Mangostin, γ-Mangostin, and Gartanin. Within the tested range of extraction temperatures by PHWE, our results demonstrated that an extraction temperature of 120 °C yielded the highest concentrations of α-Mangostin, γ-Mangostin, and Gartanin with a concomitant improvement in antioxidant capacity compared to other extraction temperatures. Using global transcriptomic profiling and bioinformatic analysis, the treatment of endothelial cells with mangosteen pericarp extracts (120 °C PHWE) for 48 h caused 408 genes to be differentially expressed. Furthermore, our results demonstrated that key biological processes related to "steroid biosynthesis and metabolism", likely involving the activation of the AMPK signaling pathway, were upregulated by mangosteen pericarp extract treatment. In conclusion, our study suggests a green extraction method to valorize phytochemical compounds from mangosteen pericarp as a natural product with potential beneficial effects on cardiometabolic health.
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Affiliation(s)
- Sakeena Si Yu Tan
- Pillar of Engineering Product Development, Singapore University of Technology & Design, Singapore 487372, Singapore; (S.S.Y.T.); (C.K.C.)
- Center for Healthcare Education, Entrepreneurship and Research (CHEERS), Singapore University of Technology & Design, Singapore 487372, Singapore; (J.A.); (E.S.O.)
| | - Meyammai Shanmugham
- Science, Math & Technology, Singapore University of Technology & Design, Singapore 487372, Singapore; (M.S.); (Y.L.C.)
| | - Yu Ling Chin
- Science, Math & Technology, Singapore University of Technology & Design, Singapore 487372, Singapore; (M.S.); (Y.L.C.)
| | - Jia An
- Center for Healthcare Education, Entrepreneurship and Research (CHEERS), Singapore University of Technology & Design, Singapore 487372, Singapore; (J.A.); (E.S.O.)
| | - Chee Kai Chua
- Pillar of Engineering Product Development, Singapore University of Technology & Design, Singapore 487372, Singapore; (S.S.Y.T.); (C.K.C.)
- Center for Healthcare Education, Entrepreneurship and Research (CHEERS), Singapore University of Technology & Design, Singapore 487372, Singapore; (J.A.); (E.S.O.)
| | - Eng Shi Ong
- Center for Healthcare Education, Entrepreneurship and Research (CHEERS), Singapore University of Technology & Design, Singapore 487372, Singapore; (J.A.); (E.S.O.)
- Science, Math & Technology, Singapore University of Technology & Design, Singapore 487372, Singapore; (M.S.); (Y.L.C.)
| | - Chen Huei Leo
- Center for Healthcare Education, Entrepreneurship and Research (CHEERS), Singapore University of Technology & Design, Singapore 487372, Singapore; (J.A.); (E.S.O.)
- Science, Math & Technology, Singapore University of Technology & Design, Singapore 487372, Singapore; (M.S.); (Y.L.C.)
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Yang X, An J, Zhang Y, Yang Y, Jia S, Li W, Huang M, Wu L. The Value of Progression-Free Survival at Three Years as a Primary Endpoint for Studies on Radiotherapy in Patients with Locally Advanced Cervical Cancer: Individual Patient Data and Validation From 27 Randomized Trials. Int J Radiat Oncol Biol Phys 2023; 117:e556-e557. [PMID: 37785708 DOI: 10.1016/j.ijrobp.2023.06.1869] [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) A traditional endpoint for locally advanced cervical cancer (LACC) clinical trials is overall survival (OS) with five years of follow-up. At present, many clinical trials evaluating concurrent chemoradiotherapy combined with immunotherapy for LACC are underway in worldwide. The use of a shorter-term endpoint could significantly speed the translation of research findings into practice. The primary hypothesis was that PFS with three years of follow-up (PFS36) is an appropriate primary endpoint to replace OS with five years of follow-up (5-year OS). MATERIALS/METHODS The primary hypothesis was developed from our individual data, was further investigated using phase III randomized controlled trials (RCTs), and then externally validated by phase II trials and retrospective studies up to 2022. Correlation analysis at the treatment-arm level was performed between 2-, 3-, 4-, and 5-year PFS rates and 5-year OS, using the Pearson correlation coefficient r in weighted linear regression, with weight equal to patient size. The MEDLINE, Embase, and PubMed databases, together with the Cochrane Central Register of Controlled Trials, were searched from January 1, 1999, to February 2, 2023. Articles eligible for inclusion contained complete survival data. RESULTS A total of 613 patients with histologically confirmed, FIGO 2009 stage IB-IVA cervical cancer who underwent radiotherapy at our institute from January 2010 to December 2013 were eligible. Individual patient data were pooled to explore the correlation between PFS and the OS trend. The recurrence rates for years 1 through 5 were 12.9%, 7.3%, 3%, 2.3%, and 1.8%, respectively. The median recurrence time was 13 months and the median time from recurrence to death was 12.2 months. Within all the recurrence, 47.3% of recurrences occurred during the first year, 71.4% in the first two years, and 85% in the first three years. Patients who did not achieve PFS36 had a 5-year OS rate of 30.3%. In contrast, a 5-year OS rate of 98.2% was observed in patients who achieved PFS36. Further data were extracted from 27 RCTs on locally advanced cervical cancer. The trials included 57 arms, with a pooled sample size of 7,692 patients. Formal measures of surrogacy were satisfied. Quality control was performed, where studies with a high risk of bias were excluded. In trial-level surrogacy, PFS36 (r2, 0.778) was associated with 5-year OS. The correlation between PFS36 and OS was externally validated using independent phase II trials and retrospective data. In total, 23 studies representing 5,174 patients were included. PFS36 (r2, 0.719) was found to be associated with OS. CONCLUSION The patients who achieved PFS36 had excellent outcomes, whereas patients that experienced earlier progression had poor survival. A significant correlation was found between PFS36 and 5-year OS in clinical trials on patients with locally advanced cervical cancer. These results suggest that PFS36 is an appropriate endpoint for LACC clinical trials of radiotherapy-based regimens.
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Affiliation(s)
- X Yang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - J An
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y Zhang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Y Yang
- Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University), Fuzhou, China
| | - S Jia
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - W Li
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - M Huang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - L Wu
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Li M, An J, Ren H, Gui J, Wang H, Wu S, Wu R, Xiao H, Wang L. Knockdown of Long Noncoding RNA CCAT2 Suppresses Malignant Phenotype in Human Laryngeal Squamous Cell Carcinoma. Bull Exp Biol Med 2023; 175:673-680. [PMID: 37874495 DOI: 10.1007/s10517-023-05924-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Indexed: 10/25/2023]
Abstract
This study aimed to explore the biological role and mechanism underlying the effects of colon cancer-associated transcript 2 (CCAT2), a long noncoding RNA (lncRNA) in human laryngeal squamous cell carcinoma (LSCC). CCAT2 expression levels in clinical LSCC samples and TU-212 cell line were evaluated by quantitative real-time PCR. The correlation of CCAT2 expression level with clinical-pathological characteristics of patients and their prognosis was analyzed. The functional role of CCAT2 in human LSCC was assessed by Cell Counting Kit-8, Transwell assay, flow cytometric analysis, and LSCC xenograft experiment in vivo. The expression of potential targeted proteins was detected by Western blotting and immunohistochemistry. We found that expression of CCAT2 was significantly elevated in LSCC tissues and TU-212 cells (p<0.05). Survival analysis showed that LSCC patients with high expression of CCAT2 had a shorter 5-year overall survival rate than those with low expression (p<0.05). In addition, CCAT2 silencing with short hairpin RNA significantly decreased the proliferative and invasive potential of TU-212 cells (p<0.05) and promoted their apoptosis. In Nude mice, CCAT2 knockdown suppressed the growth of tumor and decreased its volume and weight in comparison with the controls (p<0.05). In TU-212 cells, CCAT2 silencing with short hairpin RNA significantly down-regulated the expression of β-catenin and CDK8 (p<0.05). Thus, knockdown of CCAT2 suppresses proliferation and invasion of the cells and inhibits Wnt/β-catenin signaling pathway in LSCC, which indicates novel therapeutic targets and prognostic indicators in patients with LSCC.
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Affiliation(s)
- M Li
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - J An
- Department of Otolaryngology, XuZhou Central Hospital, XuZhou Clinical School of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - H Ren
- Department of Infection Control, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - J Gui
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Wang
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - S Wu
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - R Wu
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
| | - H Xiao
- Department of Otolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Harbin Medical University, Harbin, China.
| | - L Wang
- Department of Orthopedics, The Second Affiliated Hospital of Harbin Medical University, Harbin, China
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Sun J, Yao K, An J, Jing L, Huang K, Huang D. Machine learning and 3D bioprinting. Int J Bioprint 2023; 9:717. [PMID: 37323491 PMCID: PMC10261141 DOI: 10.18063/ijb.717] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023] Open
Abstract
48With the growing number of biomaterials and printing technologies, bioprinting has brought about tremendous potential to fabricate biomimetic architectures or living tissue constructs. To make bioprinting and bioprinted constructs more powerful, machine learning (ML) is introduced to optimize the relevant processes, applied materials, and mechanical/biological performances. The objectives of this work were to collate, analyze, categorize, and summarize published articles and papers pertaining to ML applications in bioprinting and their impact on bioprinted constructs, as well as the directions of potential development. From the available references, both traditional ML and deep learning (DL) have been applied to optimize the printing process, structural parameters, material properties, and biological/mechanical performance of bioprinted constructs. The former uses features extracted from image or numerical data as inputs in prediction model building, and the latter uses the image directly for segmentation or classification model building. All of these studies present advanced bioprinting with a stable and reliable printing process, desirable fiber/droplet diameter, and precise layer stacking, and also enhance the bioprinted constructs with better design and cell performance. The current challenges and outlooks in developing process-material-performance models are highlighted, which may pave the way for revolutionizing bioprinting technologies and bioprinted construct design.
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Affiliation(s)
- Jie Sun
- School of Advanced Technology, Xi’an Jiaotong-Liverpool University, Suzhou, China
| | - Kai Yao
- School of Advanced Technology, Xi’an Jiaotong-Liverpool University, Suzhou, China
- School of Engineering, University of Liverpool, Liverpool, UK
| | - Jia An
- Singapore Centre for 3D Printing, Nanyang Technological University, Singapore
- Centre for Healthcare Education, Entrepreneurship and Research at SUTD, Singapore University of Technology and Design, Singapore
| | - Linzhi Jing
- National University of Singapore Suzhou Research Institute, Suzhou, China
| | - Kaizhu Huang
- Data Science Research Centre, Duke Kunshan University, Kunshan, China
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An J, Xiao-Qiang H, Shun-He L, Zhi-Guang C, Dong-Lin W, Yin-Feng T, Yong-Hui L. Regulation of intestinal micro ecology between raw and salt-processed Alpinia oxyphylla on renal injury rats. Pak J Pharm Sci 2023; 36:557-564. [PMID: 37530165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Alpinia oxyphylla Fructus is one of the traditional Chinese medicine plants in the treatment of kidney injury. In clinical practice, crude Alpinia oxyphylla Fructus (CAOF) and salt-processed Alpinia oxyphylla Fructus (SAOF) are the two commonly used drugs specificated in the prevention and treatment of diabetic nephropathy (DN). However, the intestinal micro ecology regulation between CAOF and SAOF on DN has not been reported. In this paper, intestinal micro ecology regulation activities between CAOF and SAOF in DN rats were compared and analyzed by short-chain fatty acids (SCFAs) and intestinal flora analysis. The results showed that both SAOF and CAOF can regulate the intestinal flora metabolite SCFAs level in DN rats, reduce blood glucose concentration and improve inflammatory reaction. The intestinal flora analysis showed SAOF and CAOF could increase the intestinal bacterial diversity. The treatment of renal injury may be related to their increased intestinal bacterial diversity.
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Affiliation(s)
- Jia An
- Medical School, Huanghe Science & Technology College, Zhengzhou, PR China
| | - Huang Xiao-Qiang
- Medical School, Huanghe Science & Technology College, Zhengzhou, PR China
| | - Liu Shun-He
- Medical School, Huanghe Science & Technology College, Zhengzhou, PR China
| | - Chang Zhi-Guang
- Medical School, Huanghe Science & Technology College, Zhengzhou, PR China
| | - Wang Dong-Lin
- Medical School, Huanghe Science & Technology College, Zhengzhou, PR China
| | - Tan Yin-Feng
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Lab of R&D on Tropic Herbs, School of Pharmacy, Hainan Medical University, Haikou, PR China
| | - Li Yong-Hui
- Medical School, Huanghe Science & Technology College, Zhengzhou, PR China / Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Provincial Key Lab of R&D on Tropic Herbs, School of Pharmacy, Hainan Medical University, Haikou, PR China
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12
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Pu Y, An J, Mo X. Liquid Biopsy in Adverse Neurodevelopment of Children: Problems and Prospects. Methods Mol Biol 2023; 2695:337-349. [PMID: 37450130 DOI: 10.1007/978-1-0716-3346-5_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Neurodevelopmental disorders in children have an important impact on the quality of life in the whole life cycle. Severe neurodevelopmental disorders will become a serious social and family burden and an important social and economic problem. The early and middle childhood is the critical period of children's neurodevelopment. Early diagnosis of neurological disorders plays an important role in guiding children's neurological development. Existing monitoring tools lack prenatal and even early assessment of children's neurodevelopment, so reliable biomarkers are conducive to personalized care at an earlier stage. In this review, we will discuss different methods of neurodevelopmental monitoring at different times and the role and evaluation of liquid biopsy in neurodevelopmental monitoring.
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Affiliation(s)
- Yiwei Pu
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Jia An
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China
| | - Xuming Mo
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, Nanjing, China.
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Mancilla-De-la-Cruz J, Rodriguez-Salvador M, An J, Chua CK. Three-Dimensional Printing Technologies for Drug Delivery Applications: Processes, Materials, and Effects. Int J Bioprint 2022; 8:622. [PMID: 36404786 PMCID: PMC9668588 DOI: 10.18063/ijb.v8i4.622] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 10/07/2022] [Indexed: 12/01/2022] Open
Abstract
Since the 1930s, new methods of drug delivery, such as implantable devices with drug release control, have been developed. However, manufacturing techniques require bulk due to high initial production costs. Three-dimensional (3D) printing, also known as additive manufacturing or rapid prototyping, allows the fabrication of personalized drug delivery that uses different materials and complex geometries with multiple release profiles, thereby eradicating high initial costs. Different studies have been developed showing the extensive potential of 3D printing for the pharmaceutical industry, and despite in-depth discussions that have been published, there is no comprehensive review of processes, materials, and effects in drug delivery applications thus far. This review aims to fill this gap by presenting the use of 3D printing technology for drug delivery, exposing the different variations of the technique according to the characteristics, material, and dosage form sought. There are seven main categories of 3D printing according to the standards jointly developed by International Organization for Standardization and American Society for Testing and Materials: material jetting, binder jetting, material extrusion, vat photopolymerization, powder bed fusion, sheet lamination, and directed energy deposition. There are different 3D fabrication processes used for drug delivery applications depending on the dosage form and material applied. In this context, polymers, glasses, and hydrogels represent the most frequent materials used. 3D printing allows different forms of drug dosage. Oral, topical, rectal and vaginal, parental and implantable are discussed in this paper, presenting the identification of the type of 3D printing technology, the active pharmaceutical ingredient, formulation, and pharmaceutical effect. The main aim of this paper is to offer insights to people from academy and industry who are interested in the advancement of drug delivery and in knowing the future directions in the development of 3D printing applications in this area.
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Na K, Choi H, An J, Ju Y, Kim Y. EP16.04-013 Spatial Multi-Omics Landscape of Radiologically Preinvasive/Invasive Lesion in Part-Solid Lung Adenocarcinoma. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.1121] [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: 11/16/2022]
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Yang G, Wang Y, Fang Y, An J, Hou X, Lu J, Zhu R, Liu S. A Novel Potent Crystalline Chitin Decomposer: Chitin Deacetylase from Acinetobacter schindleri MCDA01. Molecules 2022; 27:molecules27165345. [PMID: 36014581 PMCID: PMC9416191 DOI: 10.3390/molecules27165345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022]
Abstract
Chitosan is a functional ingredient that is widely used in food chemistry as an emulsifier, flocculant, antioxidant, or preservative. Chitin deacetylases (CDAs) can catalyze the hydrolysis of acetyl groups, making them useful in the clean production of chitosan. However, the high inactivity of crystalline chitin catalyzed by CDAs has been regarded as the technical bottleneck of crystalline chitin deacetylation. Here, we mined the AsCDA gene from the genome of Acinetobacter schindleri MCDA01 and identified a member of the uraD_N-term-dom superfamily, which was a novel chitin deacetylase with the highest deacetylation activity. The AsCDA gene was expressed in Escherichia coli BL21 by IPTG induction, whose activity to colloidal chitin, α-chitin, and β-chitin reached 478.96 U/mg, 397.07 U/mg, and 133.27 U/mg, respectively. In 12 h, the enzymatic hydrolysis of AsCDA removed 63.05% of the acetyl groups from α-chitin to prepare industrial chitosan with a degree of deacetylation higher than 85%. AsCDA, as a potent chitin decomposer in the production of chitosan, plays a positive role in the upgrading of the chitosan industry and the value-added utilization of chitin biological resources.
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Affiliation(s)
- Guang Yang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Marine Resources Development Research Institute, Jiangsu Ocean University, Lianyungang 222000, China
- College of Food Science and Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yuhan Wang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
- College of Food Science and Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yaowei Fang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Marine Resources Development Research Institute, Jiangsu Ocean University, Lianyungang 222000, China
- College of Food Science and Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Jia An
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
- College of Food Science and Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Xiaoyue Hou
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Marine Resources Development Research Institute, Jiangsu Ocean University, Lianyungang 222000, China
- College of Food Science and Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Jing Lu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Marine Resources Development Research Institute, Jiangsu Ocean University, Lianyungang 222000, China
- College of Food Science and Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Rongjun Zhu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
- College of Food Science and Engineering, Jiangsu Ocean University, Lianyungang 222005, China
| | - Shu Liu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang 222005, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
- Jiangsu Marine Resources Development Research Institute, Jiangsu Ocean University, Lianyungang 222000, China
- College of Food Science and Engineering, Jiangsu Ocean University, Lianyungang 222005, China
- Correspondence: ; Tel./Fax: +86-05-15861246008
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An J, Liu Y, Wang Y, Fan R, Hu X, Zhang F, Yang J, Chen J. The Role of Intestinal Mucosal Barrier in Autoimmune Disease: A Potential Target. Front Immunol 2022; 13:871713. [PMID: 35844539 PMCID: PMC9284064 DOI: 10.3389/fimmu.2022.871713] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 06/08/2022] [Indexed: 11/13/2022] Open
Abstract
Autoimmune diseases are a series of diseases involving multiple tissues and organs, characterized by the over production of abnormal multiple antibodies. Although most studies support that the impaired immune balance participates in the development of autoimmune diseases, the specific pathogenesis of it is not fully understood. Intestinal immunity, especially the intestinal mucosal barrier has become a research hotspot, which is considered to be an upstream mechanism leading to the impaired immune balance. As an important defense barrier, the intestinal mucosal barrier regulates and maintains the homeostasis of internal environment. Once the intestinal barrier function is impaired under the effect of multiple factors, it will destroy the immune homeostasis, trigger inflammatory response, and participate in the development of autoimmune diseases in the final. However, the mechanism of the intestinal mucosal barrier how to regulate the homeostasis and inflammation is not clear. Some studies suggest that it maintains the balance of immune homeostasis through the zonulin pathway, intestinal microbiome, and Toll-like receptor signaling pathway. Our review focused on the composition and the function of the intestinal mucosal barrier to describe the research progress of it in regulating the immune homeostasis and inflammation, and also pointed that the intestinal mucosal barrier was the potential targets in the treatment of autoimmune diseases.
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Affiliation(s)
- Jia An
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yuqing Liu
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yiqi Wang
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Ru Fan
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Xiaorong Hu
- Department of Microbiology and Immunology, Shanxi Medical University, Taiyuan, China
| | - Fen Zhang
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Jinhua Yang
- Department of Internal Medicine, Central Hospital of Xinghualing District, Taiyuan, China
| | - Junwei Chen
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
- *Correspondence: Junwei Chen,
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Zhang F, Zhang SX, Wang Y, An J, Fan R, Liu YQ, Hu XR, Chen J. AB0005 INTEGRATED ANALYSIS OF lncRNAs AND mRNAs EXPRESSION PROFILING IN SYSTEMIC LUPUS ERYTHEMATOSUS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.2047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundSystemic lupus erythematosus (SLE) is a chronic autoimmune disease characterized by over-activity of lymphocytes, production of autoantibodies and effects on multiple organs 1. Growing evidences suggest long noncoding RNAs (lncRNAs) and mRNAs widely participate in physiological and pathological processes. However, knowledge of related lncRNAs and mRNAs in SLE remains limited.ObjectivesThe aim of our study is to investigate the levels of differential expression of lncRNAs and mRNAs in the peripheral blood mononuclear cells (PBMCs) of SLE patients and their correlation with disease activity, clinical features and cell differentiation.MethodsPeripheral venous blood 4ml were collected from 11 patients with SLE before and after treatment and 11 sex-and age-matched healthy individuals and saved in EDTA tubes. PBMCs were isolated from peripheral blood samples by Ficoll-Histopaque density gradient centrifugation. Total RNA was extracted from PBMCs with TRIzol reagent. RNAs amount and quality were quantified by using a NanoDrop ND-1000. Peripheral blood samples were sent to Novogene Co. Ltd (Beijing, China) for sequencing. The DESeq package in R language was used to analyze the differential expression of lncRNAs and mRNAs in the two groups. GO and KEGG databases analyze the potential biological functions and signal transduction and disease pathways affected by abnormal expression of lncRNAs and mRNAs2.ResultsAccording to the RNAs expression profiles, 338 lncRNAs (173 upregulated and 165 downregulated) and 2020 mRNAs (1292 upregulated and 728 downregulated) were differentially expressed between SLE patients and control groups. In addition, 17 lncRNAs were significantly downregulated and 66 mRNAs (47 upregulated and 19 downregulated) were differentially expressed between active and treated SLE patients. There were 1645 RNAs up-expression in active SLE patients and 36 RNAs under-expression in treated SLE patients, and total 14 RNAs changed direction of expression. GO and KEGG pathway analysis showed most of mRNAs were related to transcription, inflammation and immunity. The relativity between aberrantly expressed RNAs and clinical characteristics of active and treated SLE patients were shown in Table 1.ConclusionDysregulation of lncRNAs and mRNAs involves in molecular regulation of SLE, which may support for diagnosis or determination of the susceptibility of individuals of SLE.References[1]Tsokos GC. Systemic lupus erythematosus. N Engl J Med 2011;365(22):2110-21. doi: 10.1056/NEJMra1100359 [published Online First: 2011/12/02][2]Zhang Y, Xu YZ, Sun N, et al. Long noncoding RNA expression profile in fibroblast-like synoviocytes from patients with rheumatoid arthritis. Arthritis Res Ther 2016;18(1):227. doi: 10.1186/s13075-016-1129-4 [published Online First: 2016/10/08]Figure 1.(A-C) Analysis of DElncRNAs and DEmRNAs of pre-treated SLE and cotrols. (A) The volcano plot with the DElncRNAs. (B) The volcano plot with the DEmRNAs. (C) The hierarchical clustering heatmap of DElncRNAs and DEmRNAs. (D-F) Analysis of DElncRNAs and DEmRNAs between pre-treated and treated SLE. (D) Volcano plot with the DElncRNAs. (E) Volcano plot with the DEmRNAs. (F) The hierarchical clustering heatmap of DElncRNAs and DEmRNAs. (G1-G5) Partial RNAs expression changed in active and treated SLE patients. Table 1 showed specific changed RNAs. (H1-H4) The top 20 GO and KEGG terms related to the up-regulated and down-regulated DEmRNAs. (I1-I3) GO and KEGG analyses of DEmRNAs between active and treated SLE patients.Table 1:The relativity between aberrantly expressed mRNA and LncRNA and clinical characteristics of active and treated SLE patients.AcknowledgementsThis work was supported by the National Natural Science Foundation of China (No. 82001740) and the Natural Science Research Project of Shanxi Province (No.20210302123275).Disclosure of InterestsNone declared
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Liu Y, Ahmed S, Fang Y, Chen M, An J, Yang G, Hou X, Lu J, Ye Q, Zhu R, Liu Q, Liu S. Discovery of Chitin Deacetylase Inhibitors through Structure-Based Virtual Screening and Biological Assays. J Microbiol Biotechnol 2022; 32:504-513. [PMID: 35131956 PMCID: PMC9628821 DOI: 10.4014/jmb.2201.01009] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/30/2022] [Accepted: 02/03/2022] [Indexed: 12/15/2022]
Abstract
Chitin deacetylase (CDA) inhibitors were developed as novel antifungal agents because CDA participates in critical fungal physiological and metabolic processes and increases virulence in soilborne fungal pathogens. However, few CDA inhibitors have been reported. In this study, 150 candidate CDA inhibitors were selected from the commercial Chemdiv compound library through structure-based virtual screening. The top-ranked 25 compounds were further evaluated for biological activity. The compound J075-4187 had an IC50 of 4.24 ± 0.16 μM for AnCDA. Molecular docking calculations predicted that compound J075-4187 binds to the amino acid residues, including active sites (H101, D48). Furthermore, compound J075-4187 inhibited food spoilage fungi and plant pathogenic fungi, with minimum inhibitory concentration (MIC) at 260 μg/ml and minimum fungicidal concentration (MFC) at 520 μg/ml. Therefore, compound J075-4187 is a good candidate for use in developing antifungal agents for fungi control.
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Affiliation(s)
- Yaodong Liu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Sibtain Ahmed
- University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Yaowei Fang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China,Jiangsu Marine Resources Development Research Institute, Jiangsu Ocean University, Lianyungang 222000, P.R. China
| | - Meng Chen
- Lianyungang Inspection and Testing Center for Food and Drug Control, P.R. China
| | - Jia An
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Guang Yang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Xiaoyue Hou
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Jing Lu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Qinwen Ye
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Rongjun Zhu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Qitong Liu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China
| | - Shu Liu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, Lianyungang, 222005, P.R. China,Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, P.R. China,Corresponding author E-mail:
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Hu Y, Hou C, An J, Fang J, Shi Y, Fan Q, Liu G, Liu Y. Fe 3O 4-doped silk fibroin-polyacrylamide hydrogel for selective and highly efficient absorption of cationic dyes pollution in water. Nanotechnology 2022; 33:265601. [PMID: 35313285 DOI: 10.1088/1361-6528/ac5f9b] [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: 01/11/2022] [Accepted: 03/21/2022] [Indexed: 06/14/2023]
Abstract
Overuse of organic dyes has caused serious threats to the ecosystem and human health. However, the development of high-efficient, environmentally friendly, selective, and degradable cationic dye adsorbents remains a huge challenge. In this work, a novel Fe3O4nanoparticles doped silk fibroin-polyacrylamide magnetic hybrid hydrogel (Fe3O4@SF-PAAM) was successfully fabricated by combining free radical polymerization to prepare hydrogels andin situco-precipitation to prepare nanoparticles. The obtained Fe3O4@SF-PAAM hydrogel shows strong magnetic performance with saturated magnetic of 10.2 emu mg-1and excellent swelling properties with a swelling ratio of 55867%. In addition, Fe3O4@SF-PAAM can adsorb cationic dyes such as methylene blue (MB), crystal violet, and Rhodamine B, but has no adsorption effect on anionic dyes such as methyl orange, congo red, and carmine, indicating that Fe3O4@SF-PAAM has good selective adsorption properties for cationic dyes. Interestingly, the adsorption capacity of Fe3O4@SF-PAAM was approached 2025 mg g-1for MB (MB, a typical cation dye) at 25 °C and neutral. Meanwhile, the hybrid hydrogel is reusable, the removal rate for MB is still over 90% after the five adsorption-desorption cycles. The fabricated magnetic hybrid hydrogel is a kind of a highly-efficiency and eco-friendly adsorbent and presents great potential applications in water purification and environmental protection.
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Affiliation(s)
- Yongqin Hu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, People's Republic of China
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, People's Republic of China
| | - Chen Hou
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, People's Republic of China
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, People's Republic of China
| | - Jia An
- School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, People's Republic of China
| | - Junan Fang
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, People's Republic of China
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, People's Republic of China
| | - Yuxia Shi
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, People's Republic of China
| | - Qianxi Fan
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, People's Republic of China
| | - Guoyi Liu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, People's Republic of China
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, People's Republic of China
| | - Yufei Liu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, People's Republic of China
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, People's Republic of China
- Centre for Nano Health, College of Science, Swansea University, Singleton Park, Swansea SA2 8PP, United Kingdom
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20
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An J, Hu Y, Yang D, Han Y, Zhang J, Liu Y. pH-induced highly sensitive fluorescence detection of urea and urease based on carbon dots-based nanohybrids. Spectrochim Acta A Mol Biomol Spectrosc 2022; 269:120705. [PMID: 34922286 DOI: 10.1016/j.saa.2021.120705] [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: 09/16/2021] [Revised: 11/14/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
Carbon quantum dots (CDs) have become one of the most popular fluorescent materials due to their intriguing performance, which are favored by many fields. However, it is difficult to synthesize CDs with high quantum yield by the simple synthesis methods. In this paper, we fabricated CDs- silicon (SiO2) spheres composites via a versatile hydrothermal route. The prepared BCD-SiO2 composites exhibited an approximately 10-fold increase in the fluorescence intensity over that of BCDs. At the same time, the purification path was simplified by the facile separation of SiO2 spheres. The prepared BCD-SiO2 composites were used to fabricate a special sensing platform for the ultrasensitive detection of urea and urease, with detection limits of 1.67 μM and 0.002 mg/mL, respectively. Furthermore, this strategy was successfully applied to the detection of real samples. This result shows that as-prepared BCDs-SiO2 composites are promising for broad application to biological analysis.
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Affiliation(s)
- Jia An
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Yongqin Hu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Da Yang
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Yaqin Han
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Jiajing Zhang
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Yufei Liu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China; Centre for NanoHealth, College of Engineering, Swansea University, Singleton Park, Swansea SA2 8PP, UK.
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21
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Huang L, Bai J, Zong R, Zhou J, Zuo Z, Chai X, Wang Z, An J, Zhuo Y, Boada F, Yu X, Ling Z, Qu B, Pan L, Zhang Z. Sodium MRI at 7T for Early Response Evaluation of Intracranial Tumors following Stereotactic Radiotherapy Using the CyberKnife. AJNR Am J Neuroradiol 2022; 43:181-187. [PMID: 35121584 PMCID: PMC8985677 DOI: 10.3174/ajnr.a7404] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 11/05/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND AND PURPOSE Conventionally, early treatment response to stereotactic radiotherapy in intracranial tumors is often determined by structural MR imaging. Tissue sodium concentration is altered by cellular integrity and energy status in cells. In this study, we aimed to investigate the feasibility of sodium MR imaging at 7T for the preliminary evaluation of radiotherapeutic efficacy for intracranial tumors. MATERIALS AND METHODS Data were collected from 16 patients (12 men and 4 women, 24-75 years of age) with 22 intracranial tumors who were treated with stereotactic radiation therapy using CyberKnife at our institution between December 1, 2016, and August 15, 2019. Sodium MR imaging was performed at 7T before and 48 hours, 1 week, and 1 month after CyberKnife radiation therapy. Tissue sodium concentration (TSC) was calculated and analyzed based on manually labeled regions of tumors. RESULTS Ultra-high-field sodium MR imaging clearly showed the intratumoral signal, which is significantly higher than that of normal tissue (t = 5.250, P <.001)., but the edema zone has some influence. The average TSC ratios of tumor to CSF in the 22 tumors, contralateral normal tissues, edema zones, frontal cortex, and frontal white matter were 0.66 (range, 0.23-1.5), 0.30 (range, 0.15-0.43), 0.58 (range, 0.25-1.21), 0.25 (range, 0.17-0.42), and 0.30 (range, 0.19-0.49), respectively. A total of 12 tumors in 8 patients were scanned at 48 hours, 1 week, and 1 month after treatment. The average TSC at 48 hours after treatment was 0.06 higher than that before treatment and began to decrease at 1 week. The TSC ratios of 10 continued to decline and 2 tumors increased at 1 month, respectively. Tumor volume decreased by 2.4%-99% after 3 months. CONCLUSIONS Changes in the TSC can be quantified by sodium MR imaging at 7T and used to detect radiobiologic alterations in intracranial tumors at early time points after CyberKnife radiation therapy.
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Affiliation(s)
- L. Huang
- From the Departments of Neurosurgery (L.H., R.Z., J.Z., X.Y., Z.L., L.P.),Department of Neurosurgery (L.H.), The Hospital of 81st Group Army PLA, Zhangjiakou, China
| | - J. Bai
- Radiation Oncology (J.B., B.Q.), The First Medical Center of PLA General Hospital, Beijing, China
| | - R. Zong
- From the Departments of Neurosurgery (L.H., R.Z., J.Z., X.Y., Z.L., L.P.)
| | - J. Zhou
- From the Departments of Neurosurgery (L.H., R.Z., J.Z., X.Y., Z.L., L.P.)
| | - Z. Zuo
- State Key Laboratory of Brain and Cognitive Science (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Institute of Biophysics, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Beijing, China,CAS Center for Excellence in Brain Science and Intelligence Technology (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Chinese Academy of Sciences, Beijing, China
| | - X. Chai
- State Key Laboratory of Brain and Cognitive Science (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Institute of Biophysics, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Beijing, China,CAS Center for Excellence in Brain Science and Intelligence Technology (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Chinese Academy of Sciences, Beijing, China
| | - Z. Wang
- State Key Laboratory of Brain and Cognitive Science (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Institute of Biophysics, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Beijing, China,CAS Center for Excellence in Brain Science and Intelligence Technology (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Chinese Academy of Sciences, Beijing, China
| | - J. An
- Siemens Shenzhen Magnetic Resonance Ltd (J.A.), Shenzhen, China
| | - Y. Zhuo
- State Key Laboratory of Brain and Cognitive Science (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Institute of Biophysics, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Beijing, China,CAS Center for Excellence in Brain Science and Intelligence Technology (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Chinese Academy of Sciences, Beijing, China
| | - F. Boada
- Department of Radiology (F.B.), Center for Advanced Imaging Innovation and Research, New York University Grossman School of Medicine, New York, New York
| | - X. Yu
- From the Departments of Neurosurgery (L.H., R.Z., J.Z., X.Y., Z.L., L.P.)
| | - Z. Ling
- From the Departments of Neurosurgery (L.H., R.Z., J.Z., X.Y., Z.L., L.P.)
| | - B. Qu
- Radiation Oncology (J.B., B.Q.), The First Medical Center of PLA General Hospital, Beijing, China
| | - L. Pan
- From the Departments of Neurosurgery (L.H., R.Z., J.Z., X.Y., Z.L., L.P.)
| | - Z. Zhang
- State Key Laboratory of Brain and Cognitive Science (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Institute of Biophysics, Chinese Academy of Sciences, Beijing, China,University of Chinese Academy of Sciences (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Beijing, China,CAS Center for Excellence in Brain Science and Intelligence Technology (Z. Zou., X.C., Z.W., Y. Z., Z. Zhang.), Chinese Academy of Sciences, Beijing, China
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22
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Liao XH, An J, Su GL, Li YF, Dong Y, Yin T, Wu CL, Wang H, Han XH, Mei HB. [ Efficacy analysis of retroperitoneal laparoscopic selective renal artery branch occlusion and nephron sparing surgery for ≥ T1b stage renal carcinoma]. Zhonghua Yi Xue Za Zhi 2021; 101:3961-3965. [PMID: 34954999 DOI: 10.3760/cma.j.cn112137-20210630-01479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the safety and efficacy of retroperitoneal laparoscopic selective renal artery branch occlusion with nephron sparing surgery in patients with renal carcinoma of stage ≥ T1b. Methods: From July 2016 to September 2020, 35 patients with renal cancer ≥T1b underwent retroperitoneoscopic nephron sparing surgery in the First Affiliated Hospital of Shenzhen University. The surgical methods were retroperitoneoscopic nephron sparing surgery with total renal artery occlusion (group A) or selective renal artery branch occlusion (group B). Operation time, heat ischemia time, blood transfusion rate, positive margin rate, intraoperative blood loss, postoperative complications and length of hospital stay were compared between the two groups, and the total glomerular filtration rate (GFR) and the single-nephron glomerular filtration rate (sGFR) of the offected kidneys were compared between the two groups before, 3 months after and 12 months after surgery. Results: Among the 35 patients, 19 were male and 16 were female, aged (55.7±8.4) years and the body mass index is (24.6±3.1) kg/m2. The tumor diameter was (54.7±10.3) mm. The difference was statistically significant of operative time between group A and B [(103.5±14.3) vs (123.2±14.1) min,P=0.003]. There were no significant differences in thermal ischemia time, blood transfusion rate, positive margin, intraoperative blood loss, incidence of postoperative complications and length of hospital stay between the two groups (all P>0.05). The decrease of renal sGFR in the group A was significantly higher than group B at 3 months and 12 months after surgery [(23.1±3.6) vs (29.1±7.1) ml/min;(25.9±4.7) vs (30.7±7.2),both P<0.05]. Conclusion: Retroperitoneal laparoscopic selective renal artery branch occlusion and neon-sparing surgery for patients with ≥ T1b stage renal carcinoma is a safe and effective surgical method, which can well protect the renal function of patients in the early postoperative stage without increasing intraoperative blood loss and postoperative complications.
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Affiliation(s)
- X H Liao
- Department of Urology, the Second People' s Hospital of Shenzhen, the First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China
| | - J An
- Department of Urology, the Second People' s Hospital of Shenzhen, the First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China
| | - G L Su
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen 518035, China
| | - Y F Li
- Guangdong Key Laboratory of Systems Biology and Synthetic Biology for Urogenital Tumors, Shenzhen 518035, China
| | - Y Dong
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen 518035, China
| | - T Yin
- Shenzhen Key Laboratory of Genitourinary Tumor, Shenzhen 518035, China
| | - C L Wu
- Department of Urology, the Second People' s Hospital of Shenzhen, the First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China
| | - H Wang
- Department of Urology, the Second People' s Hospital of Shenzhen, the First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China
| | - X H Han
- Department of Urology, the Second People' s Hospital of Shenzhen, the First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China
| | - H B Mei
- Department of Urology, the Second People' s Hospital of Shenzhen, the First Affiliated Hospital of Shenzhen University, Shenzhen 518035, China
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23
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Sheng ZY, Li M, Yang R, Liu YH, Yin XX, Mao JR, Brown HE, Zhou HN, Wang PG, An J. COVID-19 prevention measures reduce dengue spread in Yunnan Province, China, but do not reduce established outbreak. Emerg Microbes Infect 2021; 11:240-249. [PMID: 34935597 PMCID: PMC8745368 DOI: 10.1080/22221751.2021.2022438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The COVID-19 pandemic and measures against it provided a unique opportunity to understand the transmission of other infectious diseases and to evaluate the efficacy of COVID-19 prevention measures on them. Here we show a dengue epidemic in Yunnan, China, during the pandemic of COVID-19 was dramatically reduced compared to non-pandemic years and, importantly, spread was confined to only one city, Ruili. Three key features characterized this dengue outbreak: (i) the urban-to-suburban spread was efficiently blocked; (ii) the scale of epidemic in urban region was less affected; (iii) co-circulation of multiple strains was attenuated. These results suggested that countermeasures taken during COVID-19 pandemic are efficient to prevent dengue transmission between cities and from urban to suburban, as well to reduce the co-circulation of multiple serotypes or genotypes. Nevertheless, as revealed by the spatial analysis, once the dengue outbreak was established, its distribution was very stable and resistant to measures against COVID-19, implying the possibility to develop a precise prediction method.
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Affiliation(s)
- Z Y Sheng
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China
| | - M Li
- Yunnan Provincial Key Laboratory of Vector-borne Disease Control and Research, Yunnan Institute of Parasitic Diseases, Simao Pu'er, Yunnan, PR China
| | - R Yang
- Yunnan Provincial Key Laboratory of Vector-borne Disease Control and Research, Yunnan Institute of Parasitic Diseases, Simao Pu'er, Yunnan, PR China
| | - Y H Liu
- Ruili Center of Disease Prevention and Control, Ruili, Yunnan, PR China
| | - X X Yin
- Ruili Center of Disease Prevention and Control, Ruili, Yunnan, PR China
| | - J R Mao
- Ruili People's Hospital, Ruili, Yunnan, PR China
| | - Heidi E Brown
- Department of Epidemiology and Biostatistics, College of Public Health, University of Arizona
| | - H N Zhou
- Yunnan Provincial Key Laboratory of Vector-borne Disease Control and Research, Yunnan Institute of Parasitic Diseases, Simao Pu'er, Yunnan, PR China
| | - P G Wang
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China
| | - J An
- Department of Microbiology, School of Basic Medical Sciences, Capital Medical University, Beijing, PR China.,Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing, China
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24
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Dassanayake MK, Khoo TJ, An J. Antibiotic resistance modifying ability of phytoextracts in anthrax biological agent Bacillus anthracis and emerging superbugs: a review of synergistic mechanisms. Ann Clin Microbiol Antimicrob 2021; 20:79. [PMID: 34856999 PMCID: PMC8641154 DOI: 10.1186/s12941-021-00485-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 11/22/2021] [Indexed: 01/17/2023] Open
Abstract
Background and objectives The chemotherapeutic management of infections has become challenging due to the global emergence of antibiotic resistant pathogenic bacteria. The recent expansion of studies on plant-derived natural products has lead to the discovery of a plethora of phytochemicals with the potential to combat bacterial drug resistance via various mechanisms of action. This review paper summarizes the primary antibiotic resistance mechanisms of bacteria and also discusses the antibiotic-potentiating ability of phytoextracts and various classes of isolated phytochemicals in reversing antibiotic resistance in anthrax agent Bacillus anthracis and emerging superbug bacteria. Methods Growth inhibitory indices and fractional inhibitory concentration index were applied to evaluate the in vitro synergistic activity of phytoextract-antibiotic combinations in general. Findings A number of studies have indicated that plant-derived natural compounds are capable of significantly reducing the minimum inhibitory concentration of standard antibiotics by altering drug-resistance mechanisms of B. anthracis and other superbug infection causing bacteria. Phytochemical compounds allicin, oleanolic acid, epigallocatechin gallate and curcumin and Jatropha curcas extracts were exceptional synergistic potentiators of various standard antibiotics. Conclusion Considering these facts, phytochemicals represents a valuable and novel source of bioactive compounds with potent antibiotic synergism to modulate bacterial drug-resistance.
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Affiliation(s)
- Mackingsley Kushan Dassanayake
- School of Pharmacy, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Malaysia.
| | - Teng-Jin Khoo
- School of Pharmacy, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Malaysia
| | - Jia An
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, Singapore
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25
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Koo JW, Ho JS, Tan YZ, Tan WS, An J, Zhang Y, Chua CK, Chong TH. Fouling mitigation in reverse osmosis processes with 3D printed sinusoidal spacers. Water Res 2021; 207:117818. [PMID: 34749103 DOI: 10.1016/j.watres.2021.117818] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 10/11/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
Feed spacers are an essential part of spiral wound modules for reverse osmosis (RO). They create flow channels between membrane sheets and manipulate hydrodynamic conditions to control membrane fouling. In this work, additive manufacturing (Polyjet) was used to print novel sinusoidal spacers with wavy axial filaments connected by perpendicular (ST) or slanted (SL) transverse filaments. When tested with 2 g/L NaCl solution, conventional and SL spacers had similar flux while the ST spacer had about 5-7% lower flux. The pressure losses for ST and SL spacers increased by up to 3 folds depending on the flow condition. In the colloidal silica fouling and biofouling tests, the sinusoidal spacers showed lower membrane permeability decrease of 46% for ST, 41% for SL vs 56% for conventional and 26% for ST, 22% for SL vs 33% for conventional, respectively. Optical coherence tomography images from colloidal silica fouling and confocal images from biofouling tests revealed that fouling patterns were closely associated with the local hydrodynamic conditions. Overall, sinusoidal spacers showed promising results in controlling membrane fouling, but there is potential for further optimizations to reduce channel pressure loss.
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Affiliation(s)
- Jing Wee Koo
- Interdisciplinary Graduate Programme, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141, Singapore; Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Jia Shin Ho
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141, Singapore
| | - Yong Zen Tan
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Avenue, Singapore 637459, Singapore
| | - Wen See Tan
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Jia An
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Yi Zhang
- School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Chee Kai Chua
- Engineering Product Development Pillar, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372, Singapore
| | - Tzyy Haur Chong
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
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26
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Soetedjo AAP, Lee JM, Lau HH, Goh GL, An J, Koh Y, Yeong WY, Teo AKK. Tissue engineering and 3D printing of bioartificial pancreas for regenerative medicine in diabetes. Trends Endocrinol Metab 2021; 32:609-622. [PMID: 34154916 DOI: 10.1016/j.tem.2021.05.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 05/17/2021] [Accepted: 05/24/2021] [Indexed: 02/08/2023]
Abstract
Diabetes is a severe chronic disease worldwide. In various types of diabetes, the pancreatic beta cells fail to secrete sufficient insulin, at some point, to regulate blood glucose levels. Therefore, the replacement of dysfunctional pancreas, islets of Langerhans, or even the insulin-secreting beta cells facilitates physiological regulation of blood glucose levels. However, the current lack of sufficient donor human islets for cell replacement therapy precludes a routine and absolute cure for most of the existing diabetes cases globally. It is envisioned that tissue engineering of a bioartificial pancreas will revolutionize regenerative medicine and the treatment of diabetes. In this review, we discuss the anatomy and physiology of the pancreas, and identify the clinical considerations for engineering a bioartificial pancreas. Subsequently, we dissect the bioengineering problem based on the design of the device, the biomaterial used, and the cells involved. Last but not least, we highlight current tissue engineering challenges and explore potential directions for future work.
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Affiliation(s)
- Andreas Alvin Purnomo Soetedjo
- Stem Cells and Diabetes Laboratory, Institute of Molecular and Cell Biology (IMCB), A*STAR, Singapore; Integrative Sciences and Engineering Programme, NUS Graduate School, National University of Singapore, Singapore
| | - Jia Min Lee
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Hwee Hui Lau
- Stem Cells and Diabetes Laboratory, Institute of Molecular and Cell Biology (IMCB), A*STAR, Singapore; School of Biological Sciences, Nanyang Technological University, Singapore
| | - Guo Liang Goh
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Jia An
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Yexin Koh
- Department of Hepatopancreatobiliary and Transplant Surgery, Singapore General Hospital, Singapore
| | - Wai Yee Yeong
- Singapore Centre for 3D Printing (SC3DP), School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Adrian Kee Keong Teo
- Stem Cells and Diabetes Laboratory, Institute of Molecular and Cell Biology (IMCB), A*STAR, Singapore; Department of Biochemistry and Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
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27
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Lee AY, Pant A, Pojchanun K, Lee CP, An J, Hashimoto M, Tan UX, Leo CH, Wong G, Chua CK, Zhang Y. Three-Dimensional Printing of Food Foams Stabilized by Hydrocolloids for Hydration in Dysphagia. Int J Bioprint 2021; 7:393. [PMID: 34805589 PMCID: PMC8600302 DOI: 10.18063/ijb.v7i4.393] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 05/11/2021] [Accepted: 06/14/2021] [Indexed: 11/23/2022] Open
Abstract
Three-dimensional food printing offers the possibility of modifying the structural design, nutrition, and texture of food, which may be used for consumers with special dietary requirements such as dysphagic patients. One of the food matrices that can be used for liquid delivery to dysphagic patients is food foams. Foams are widely used in different food products to adjust food density, rheological properties, and texture. Foams allow the food to stay in the mouth for sufficient time to provide hydration while minimizing the danger of choking. Our work studies the foam properties and printability of both egg white foams and eggless foams with a strong focus on their foaming properties, rheological properties, printability, and suitability for dysphagic patients. Food hydrocolloid, xanthan gum (XG), is added to improve foam stability and rheological properties so that the inks are printable. Rheological and syneresis properties of the pre-printed foam inks are examined. The texture profile and microstructure properties are studied post-printing. International dysphagia diet standardization initiative tests are carried out to assess the inks' potential for dysphagic diets. Inks with XG performed better with minimal water seepage, better foam stability, and excellent printability. This suggests that hydrocolloids lead to more stable food foams that are suitable for 3DFP and safe for hydration delivery to dysphagic patients.
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Affiliation(s)
- Amelia Yilin Lee
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Aakanksha Pant
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Kanitthamniyom Pojchanun
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Cheng Pau Lee
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore
- SUTD-MIT International Design Centre (IDC), Singapore University of Technology and Design, Singapore
| | - Jia An
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
| | - Michinao Hashimoto
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore
- SUTD-MIT International Design Centre (IDC), Singapore University of Technology and Design, Singapore
| | - U-Xuan Tan
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore
| | - Chen Huei Leo
- Science, Math and Technology, Singapore University of Technology and Design, Singapore
| | - Gladys Wong
- Department of Nutrition and Dietetics, Khoo Teck Puat Hospital, Singapore
| | - Chee Kai Chua
- Pillar of Engineering Product Development, Singapore University of Technology and Design, Singapore
| | - Yi Zhang
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
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Wu R, An J, Ding T, Xue H, Li XF, Wang C. POS0396 THE LEVEL OF PERIPHERAL REGULATORY T CELLS IS ASSOCIATED WITH THE CHANGES OF INTESTINAL MICROBIOTA IN PATIENTS WITH RHEUMATOID ARTHRITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Rheumatoid arthritis (RA) is a systemic autoimmunity inflammation disease characterized with chronic aggressive arthritis and the presence of abnormal antibodies. Several observations showed that the breakdown of immune tolerance caused by many complex interactions was involved in the development of RA[1]. However, the pathogenesis of RA remained unclear. It has been confirmed that the imbalance of Th17 and Treg cells play a crucial role in destroying immune tolerance [2]. Besides, researches showed that intestinal microbiota can influence host immunity by acting on the immune cells to play pro-inflammatory or anti-inflammatory effect, and in turn immune system can also regulate the microbiota[3, 4]. Thus, a frontier point of view in the field of rheumatism, immune microecology, was proposed, which is a novel concept for the breakdown of immune tolerance. Studies have confirmed that there was an imbalance of intestinal microbiota in patients with RA [4]. But the relationship between the CD4+T subsets cells and intestinal microbiota in RA is unknown.Objectives:We detected and compared the absolute number of CD4+T cells subsets in the peripheral blood and the proportion or abundance of intestinal microbiota in patients with RA and healthy adults, and then analyzed the relationship between them to explore the role of CD4+T cells subsets and intestinal microbiota in the pathogenesis of RA.Methods:We collected the sample of stool and blood from 15 patients with RA hospitalized at the Second Hospital of Shanxi Medical University and 8 age and gender-matched healthy controls(HC). The absolute number of CD4+T cells subsets including Th1, Th2, Th17 and Treg cells were detected by flow cytometry. The 16S rRNA in the stool specimens were sequenced by the Roche/45 high-throughput sequencing platform. We analyzed whether there was correlarion between CD4+T subsets cells and intestinal microbiota.Results:Patients with RA had a higher level of Christensenellaceae and a lower level of Pseudomonadaceae as compared with those of HCs at the family level (p<0.05). And at the genus level, the patients with RA had higher levels of Ruminococcus torques, Christensenellaceae R-7, Ruminiclostridium 9 and Ruminococcus 1 compared with those of HCs (p<0.05) (Figure 1).And the Ruminococcus torques at the genus level was negative correlated with the absolute number of Treg cells (p<0.001) (Figure 2).Conclusion:The results here suggested that there were different proportion or abundance of intestinal microbiota between the patients with RA andHCs. And the changes of intestinal microbiota such as Ruminococcus torques were associated with Treg cells, further indicating that the imbalance of intestinal microbiota in RA can destory the immune tolerance. The above results uncovered that the intestinal microbiota had immunomodulatory function, which may be the upstream mechanism participated in the pathogenesis of RA.References:[1]Weyand CM, Goronzy JJ. The immunology of rheumatoid arthritis. Nat Immunol 2021, 22(1): 10-18.[2]Weyand CM, Goronzy JJ. Immunometabolism in the development of rheumatoid arthritis. Immunol Rev 2020, 294(1): 177-187.[3]Brown EM, Kenny DJ, Xavier RJ. Gut Microbiota Regulation of T Cells During Inflammation and Autoimmunity. Annu Rev Immunol 2019, 37: 599-624.[4]du Teil Espina M, Gabarrini G, Harmsen HJM, Westra J, van Winkelhoff AJ, van Dijl JM. Talk to your gut: the oral-gut microbiome axis and its immunomodulatory role in the etiology of rheumatoid arthritis. FEMS Microbiol Rev 2019, 43(1).Figure 1.At the family level (a-b) and the genus level(c-f), the relative abundance of intestinal microbiota in patients with RA and HCs were different. Data were expressed as median (Q1, Q3) and analyzed by Wilcoxon test. (*** P < 0.001, **P < 0.01 and *P < 0.05).Figure 2.A heatmap shows the correlation between the intestinal microbiota and CD4+T cells in patients with RA, and Ruminococcus torques at the genus level was negative related with Treg cells. (Colors indicate the Spearman rank correlation, *** P < 0.001).Disclosure of Interests:None declared
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Cheng T, Wang X, Zhang SX, Yang J, Zhao C, Wang Y, An J, Chen J. OP0307 GUT MICROBIOTA AND ITS RELEVANCE TO PERIPHERAL LYMPHOCYTE SUBPOPULATION IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Systemic lupus erythematosus (SLE) is an autoimmune disease with disturbance of lymphocyte subpopulations1. Growing experimental and clinical evidence suggests that chronic inflammatory response induced by gut microbiome critically contribute to the development of SLE2 3.Objectives:To investigate the characteristics of gut microbiome and the associations between flora and peripheral lymphocyte subpopulations in SLE patients.Methods:A total of 19 SLE patients who fulfilled the 2019 American college of Rheumatology (ACR) and European League Against Rheumatism (EULAR) classification criteria and 16 age- and sex- matched healthy controls (HC) were enrolled in this study. The peripheral T lymphocyte subsets of these participants were assessed by flow cytometry and the gut microbiota were investigated via 16s rRNA. Indicators of disease activity such as erythrocyte sedimentation rate (ESR), complement C3 and C4 were recorded at the same time. Mann-Whitney U test was applied to compare T lymphocyte subsets between SLE patients and HC. Spearman analysis was used for calculating correlation between T subsets and highly expressed differential flora as well as their correlation with disease activity indicators. All P-values reported herein were two-tailed and P-value<0.05 was taken as statistically significant.Results:SLE patients had higher proportions of Th17 cells (P=0.020) and γδT cells (P=0.018) but lower levels of Treg cells (P=0.001), Tfh cells (P=0.018) and Naïve CD4+T cells (P=0.004) (Figure 1a-e). The diversity and relative abundance of intestinal flora in patients with SLE were significantly different from those in HCs. Detailly, the α-diversity was decreased in SLE (P<0.05) (Figure 2a-c). Compared with HC, 11 species of flora were discovered to be distinctly different(P<0.05) (Figure 2d-e). Moreover, there was a significant positive correlation between Treg levels and Ruminococcus2 (P=0.042), Th17 and Megamonas (P=0.009), γδT and Streptococcus (P=0.004) as well as Megamonas (P=0.003), Tfh and Bacteroides (P=0.040). Whereas Th1 levels and Bifidobacterium were negatively correlated in these participants (P=0.005). As for clinical disease measures, there were negative correlations not only between ESR and Treg cells (P=0.031) but also C4 and the amount of Unclassified Ruminococcaceae (P=0.032).Conclusion:Abnormality of T cell subsets, especially the level of Naïve CD4+T, γδT, Tfh, Treg, and Th17 cells contributes to the occurrence and progression of SLE, which may be related to the disturbance of gut microbiota. Therefore it is necessary to attach importance to the alteration of gut microbiota to prevent the outbreak of inflammation and maybe they can be identified as biomarkers predicting disease activity.References:[1]Katsuyama T, Tsokos GC, Moulton VR. Aberrant T Cell Signaling and Subsets in Systemic Lupus Erythematosus. Front Immunol 2018;9:1088. doi: 10.3389/fimmu.2018.01088 [published Online First: 2018/06/06][2]López P, de Paz B, Rodríguez-Carrio J, et al. Th17 responses and natural IgM antibodies are related to gut microbiota composition in systemic lupus erythematosus patients. Sci Rep 2016;6:24072. doi: 10.1038/srep24072 [published Online First: 2016/04/06][3]Esmaeili SA, Mahmoudi M, Momtazi AA, et al. Tolerogenic probiotics: potential immunoregulators in Systemic Lupus Erythematosus. J Cell Physiol 2017;232(8):1994-2007. doi: 10.1002/jcp.25748 [published Online First: 2016/12/21]Acknowledgements:This project was supported by National Science Foundation of China (82001740), Open Fund from the Key Laboratory of Cellular Physiology (Shanxi Medical University) (KLCP2019) and Innovation Plan for Postgraduate Education in Shanxi Province (2020BY078).Disclosure of Interests:None declared.
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Cong S, Wang N, Fan J, Wang BH, An J, Bao HL, Wang LH, Fang LW. [Tobacco dependence status and influencing factors among smokers aged 40 or older in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:807-813. [PMID: 34814471 DOI: 10.3760/cma.j.cn112338-20210204-00092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To understanding tobacco dependence and its influencing factors among smokers aged 40 or older in China and provide scientific data for the implementation of smoking cessation intervention. Methods: The data of this study were collected from 125 surveillance sites in 31 provinces (autonomous regions and municipalities) of chronic obstructive pulmonary disease (COPD) surveillance in China (2014 and 2015). The relevant variables of smoking status and tobacco dependence among people aged 40 or older were collected by face-to-face interview. The weighted proportion of tobacco dependence and its 95%CI and influencing factors among current smokers and daily smokers aged 40 or older in China were estimated with complex sampling weights. Results: A total of 22 380 current smokers and 19 999 daily smokers were included in the analysis. The proportion of high tobacco dependence of current smokers aged 40 or older was 31.1% (29.3%-32.9%). The proportion of high tobacco dependence was higher in men than in women, and higher in rural smokers than urban smokers. The proportion was 33.3% (31.3%-35.2%) in 40 to 59 years old smokers, which was higher than older age group. The proportion of high tobacco dependence among daily smokers aged 40 or older was 35.0% (33.0%-37.0%), and was 35.8% (33.8%-37.8%) in men and 22.0% (16.8%-27.2%) in women. Among current smokers and daily smokers, with the decrease of education level, the proportion of high tobacco dependence increased. The proportion of high tobacco dependence of smokers who started smoking before 18 years old was significantly higher than those who started smoking after 18 years old. The ratio of high tobacco dependence of smokers with chronic respiratory symptoms was higher than that of asymptomatic smokers. There was no significant difference in the tobacco dependence between patients with chronic diseases or chronic respiratory diseases and non patients (P>0.05). Smokers with diabetes, cardiovascular and cerebrovascular diseases and hypertension had a slightly lower proportion of high tobacco dependence than smokers without above diseases (P<0.05). Multivariate logistic regression analysis showed that men, central and eastern regions, 40-59 age group, engaged in agriculture, forestry, animal husbandry, fishery industry, water conservancy, manufacture, transportation and commercial services occupation, low education level and smoking onset age less than 18 years old had a high risk of high tobacco dependence. Conclusions: The proportion of high tobacco dependence among current smokers aged 40 or older is high in China, so there is a huge demand for smoking cessation interventions. Effective measures should be taken to promote smoking cessation intervention in China.
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Affiliation(s)
- S Cong
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - N Wang
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J Fan
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - B H Wang
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J An
- Beijing Xicheng District Maternal and Child Health Hospital, Beijing 100054,China
| | - H L Bao
- Department of Maternal and Child Health, School of Public Health, Peking University, Beijing 100191, China
| | - L H Wang
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - L W Fang
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Pant A, Lee AY, Karyappa R, Lee CP, An J, Hashimoto M, Tan UX, Wong G, Chua CK, Zhang Y. 3D food printing of fresh vegetables using food hydrocolloids for dysphagic patients. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106546] [Citation(s) in RCA: 71] [Impact Index Per Article: 23.7] [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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An J, Liu G, Chen M, Hu Y, Chen R, Lyu Y, Zhang C, Liu Y. One-step synthesis of fluorescence-enhanced carbon dots for Fe (III) on-off-on sensing, bioimaging and light-emitting devices. Nanotechnology 2021; 32:285501. [PMID: 33827057 DOI: 10.1088/1361-6528/abf59b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 04/06/2021] [Indexed: 05/24/2023]
Abstract
Carbon quantum dots (CDs), as one of the most potential fluorescent sensing materials, have attracted lots of attention in recent years. However, the low quantum yields, complicated separation and purification procedures have limited its application and large-scale production. In this paper, a facile and universal method was successfully developed to synthesize CDs-silica (SiO2) spheres composites (CS composites), which not only demonstrates 10-fold fluorescence enhancement compared with single CDs but also enables the purification with a simple centrifugation step. Meanwhile, fabricated composites also presented superior photoluminescence (PL) stability and high PL intensity, even in some tough environments such as acid/alkali aqueous solution, high/low temperature, and high ion concentration aqueous solution. This simple, fast, low-cost, and efficient synthesis method would potentially expand the application of CDs for clinical analysis, optical sensing (ferric ion (Fe3+) and pyrophosphate), bioimaging and light-emitting diodes (LEDs).
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Affiliation(s)
- Jia An
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, People's Republic of China
- Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing 400044, People's Republic of China
| | - Guoyi Liu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, People's Republic of China
- Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing 400044, People's Republic of China
| | - Meizhu Chen
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, People's Republic of China
| | - Yongqin Hu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, People's Republic of China
- Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing 400044, People's Republic of China
| | - Rubing Chen
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, People's Republic of China
| | - Ying Lyu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, People's Republic of China
| | - Chao Zhang
- Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, People's Republic of China
| | - Yufei Liu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, People's Republic of China
- Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing 400044, People's Republic of China
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Chen R, Hu Y, Chen M, An J, Lyu Y, Liu Y, Li D. Naked-Eye Detection of Hepatitis B Surface Antigen Using Gold Nanoparticles Aggregation and Catalase-Functionalized Polystyrene Nanospheres. ACS Omega 2021; 6:9828-9833. [PMID: 33869962 PMCID: PMC8047666 DOI: 10.1021/acsomega.1c00507] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Developing rapid, efficient, highly sensitive, simple, stable, and low-cost virus marker detection products that are appropriate for basic facilities is of great importance in the early diagnosis and treatment of viruses. Naked-eye detection methods are especially important when medical testing facilities are limited. Polystyrene nanospheres (PSs) with catalytic and specific recognition functions were successfully developed by simultaneously modifying catalase and goat anti-hepatitis B surface antibodies on nanospheres. The modified PSs contributed significantly to the amplification of the signal. Via the specific antigen-antibody reaction, the bifunctional nanospheres could be captured on microplate and then catalyzed the decomposition of hydrogen peroxide to reduce chloroauric acid and synthesize gold nanoparticles (AuNPs). Due to the surface plasmon resonance of AuNPs, the solution color change could be observed with the naked eye and the limit of detection (LOD) was 0.1 ng/mL. Furthermore, the LOD observed with instrumentation was 0.01 ng/mL, which meant that a rapid, efficient, and highly sensitive method for the detection of hepatitis B surface antigens was successfully developed, and neither complex sample pretreatment nor expensive equipment was needed.
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Affiliation(s)
- Rubing Chen
- Key
Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Yongqin Hu
- Key
Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
- Center
for Intelligent Sensing Technology (CIST), College of Optoelectronic
Engineering, Chongqing University, Chongqing 400044, China
| | - Meizhu Chen
- Key
Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Jia An
- Key
Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
- Center
for Intelligent Sensing Technology (CIST), College of Optoelectronic
Engineering, Chongqing University, Chongqing 400044, China
| | - Ying Lyu
- Key
Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Yufei Liu
- Key
Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
- Center
for Intelligent Sensing Technology (CIST), College of Optoelectronic
Engineering, Chongqing University, Chongqing 400044, China
- Centre
for NanoHealth, College of Science, Swansea
University, Singleton
Park, Swansea SA2 8PP, U.K.
| | - Dongling Li
- Key
Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
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An J, Hu Y, Liu G, Chen M, Chen R, Lyu Y, Yuan M, Luo M, Liu Y. A fluorometric and colorimetric dual-signal nanoplatform for ultrasensitive visual monitoring of the activity of alkaline phosphatase. J Mater Chem B 2021; 9:2998-3004. [PMID: 33635306 DOI: 10.1039/d0tb02531c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Considering the limited sensitivity and accuracy of single-signal assay strategies, the multi-signal assay strategy has sparked significant excitement in recent years. In this study, for the first time, we reported a one-pot method in situ synthesis of carbon-containing nanoparticles (CNPs) via p-aminophenol (AP) and diethylenetriamine (DETA). The CNP solution exhibits yellow and light blue fluorescence under UV-light. Moreover, the CNPs exhibited excellent photoluminescence stability even under extreme conditions. Inspired by the alkaline phosphatase (ALP)-triggered specific catalytic reaction, we constructed an ultrasensitive fluorescence and colorimetric two-channel strategy for monitoring the ALP activity. By optimizing the detection parameters, the detection limits for both fluorometric and colorimetric were 0.05 mU mL-1. Moreover, the strategy showed high specificity and was successfully applied to monitor the ALP activity level in human serum samples. The analytical strategy opened a new window for the detection of the ALP activity, screening of the ALP inhibitor, and disease diagnosis.
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Affiliation(s)
- Jia An
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China.
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Liu Y, Lyu Y, Hu Y, An J, Chen R, Chen M, Du J, Hou C. Novel Graphene Oxide Nanohybrid Doped Methacrylic Acid Hydrogels for Enhanced Swelling Capability and Cationic Adsorbability. Polymers (Basel) 2021; 13:1112. [PMID: 33915840 PMCID: PMC8037351 DOI: 10.3390/polym13071112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/25/2021] [Accepted: 03/29/2021] [Indexed: 02/07/2023] Open
Abstract
Novel versatile hydrogels were designed and composited based on covalent bond and noncovalent bond self-assembly of poly(methacrylic acid) (PMAA) networks and nanohybrids doped with graphene oxide (GO). The structures and properties of the neat PMAA and the prepared PMAA/GO hydrogels were characterized and analyzed in detail, using X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, swelling and cationic absorption, etc. The swelling results showed that the water penetration follows the non-Fick transport mechanism based on swelling kinetics and diffusion theory. The swelling capacity of PMAA and composited PMAA/GO hydrogels toward pH, Na+, Ga2+, and Fe3+ was investigated; the swelling ratio was tunable between 4.44 and 36.44. Taking methylene blue as an example, the adsorption capacity of PMAA/GO hydrogels was studied. Nanohybrid doped GO not only self-associated with PMAA via noncovalent bonding interactions and had a tunable swelling ratio, but also interacted with water molecules via electrostatic repulsion, offering a pH response of both the network and dye absorption. Increases in pH caused a rise in equilibrium swelling ratios and reduced the cumulative cationic dye removal.
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Affiliation(s)
- Yufei Liu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; (Y.L.); (Y.L.); (Y.H.); (J.A.); (R.C.); (M.C.); (J.D.)
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
- Centre for Nano Health, College of Science, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| | - Ying Lyu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; (Y.L.); (Y.L.); (Y.H.); (J.A.); (R.C.); (M.C.); (J.D.)
| | - Yongqin Hu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; (Y.L.); (Y.L.); (Y.H.); (J.A.); (R.C.); (M.C.); (J.D.)
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Jia An
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; (Y.L.); (Y.L.); (Y.H.); (J.A.); (R.C.); (M.C.); (J.D.)
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Rubing Chen
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; (Y.L.); (Y.L.); (Y.H.); (J.A.); (R.C.); (M.C.); (J.D.)
| | - Meizhu Chen
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; (Y.L.); (Y.L.); (Y.H.); (J.A.); (R.C.); (M.C.); (J.D.)
| | - Jihe Du
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; (Y.L.); (Y.L.); (Y.H.); (J.A.); (R.C.); (M.C.); (J.D.)
| | - Chen Hou
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing 400044, China; (Y.L.); (Y.L.); (Y.H.); (J.A.); (R.C.); (M.C.); (J.D.)
- Centre for Intelligent Sensing Technology, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
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Yoo BH, Kim SH, Baek YJ, Yeom JS, An J, Park YN, Lee HW. Hepatobiliary and Pancreatic: Liver abscess not responding to drainage and antibiotics. J Gastroenterol Hepatol 2021; 36:851. [PMID: 33458841 DOI: 10.1111/jgh.15383] [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] [Received: 11/03/2020] [Revised: 11/22/2020] [Accepted: 12/17/2020] [Indexed: 12/09/2022]
Affiliation(s)
- B H Yoo
- Department of Internal Medicine, College of Medicine, Yonsei University, Seoul, South Korea
| | - S H Kim
- Department of Hepatobiliary and Pancreatic Surgery, Severance Hospital, College of Medicine, Yonsei University, Seoul, South Korea
| | - Y J Baek
- Institute of Infection, College of Medicine, Yonsei University, Seoul, South Korea
| | - J-S Yeom
- Institute of Infection, College of Medicine, Yonsei University, Seoul, South Korea
| | - J An
- Department of Pathology, College of Medicine, Yonsei University, Seoul, South Korea
| | - Y N Park
- Department of Pathology, College of Medicine, Yonsei University, Seoul, South Korea
| | - H W Lee
- Department of Internal Medicine, College of Medicine, Yonsei University, Seoul, South Korea.,Institute of Gastroenterology, College of Medicine, Yonsei University, Seoul, South Korea.,Yonsei Liver Center, Severance Hospital, Seoul, South Korea
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Deng P, Tan J, Hu C, Cao L, Yang H, Li M, Gu Q, Li Y, An J, Han-Zhang H. P76.20 The Predictive Values of Non-Resistant Nncommon EGFR Mutations in Advanced Non-Small Cell Lung Cancer Patients. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.1077] [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: 10/21/2022]
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Deng P, Yang H, Chen C, Hu C, Cao L, Gu Q, An J, Li B, Tang Y, Meng J, Qin L, Feng J. P48.05 Anlotinib Plus Platinum-Etoposide in 1st-Line Treatment of Extensive-Stage Small-Cell Lung Cancer: A Single-Arm Phase II Trial. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.875] [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: 10/21/2022]
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An J, Chua CK, Mironov V. Application of Machine Learning in 3D Bioprinting: Focus on Development of Big Data and Digital Twin. Int J Bioprint 2021; 7:342. [PMID: 33585718 PMCID: PMC7875058 DOI: 10.18063/ijb.v7i1.342] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [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: 01/08/2021] [Accepted: 01/18/2021] [Indexed: 02/07/2023] Open
Abstract
The application of machine learning (ML) in bioprinting has attracted considerable attention recently. Many have focused on the benefits and potential of ML, but a clear overview of how ML shapes the future of three-dimensional (3D) bioprinting is still lacking. Here, it is proposed that two missing links, Big Data and Digital Twin, are the key to articulate the vision of future 3D bioprinting. Creating training databases from Big Data curation and building digital twins of human organs with cellular resolution and properties are the most important and urgent challenges. With these missing links, it is envisioned that future 3D bioprinting will become more digital and in silico, and eventually strike a balance between virtual and physical experiments toward the most efficient utilization of bioprinting resources. Furthermore, the virtual component of bioprinting and biofabrication, namely, digital bioprinting, will become a new growth point for digital industry and information technology in future.
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Affiliation(s)
- Jia An
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Chee Kai Chua
- Engineering Product Development, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372
| | - Vladimir Mironov
- 3D Bioprinting Solutions, 68/2 Kashirskoe Highway, Moscow, Russian Federation 115409
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An J, Chen M, Liu G, Hu Y, Chen R, Lyu Y, Sharma S, Liu Y. Water-stable perovskite-on-polymer fluorescent microspheres for simultaneous monitoring of pH, urea, and urease. Anal Bioanal Chem 2021; 413:1739-1747. [PMID: 33462659 DOI: 10.1007/s00216-020-03144-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/25/2020] [Accepted: 12/22/2020] [Indexed: 01/01/2023]
Abstract
Perovskite materials have attracted attention due to their excellent optical and electrical properties; however, their unsatisfactory stability limits their application in biochemical detection. In this paper, CsPbBr3 perovskite quantum dots were successfully encapsulated in poly(styrene/acrylamide) microspheres, using a swelling-shrinking method. The manufactured perovskite microspheres (PDPS composites) not only maintained strong photoluminescence (PL) stability but also demonstrated great water solubility. Additionally, a real-time pH monitoring platform was constructed based on the prepared PDPS composites and dopamine, and the system showed a good linear relationship in a pH range of 4-12. Furthermore, urea could be hydrolyzed to produce hydroxyl groups, thereby increasing the pH of the solution. Therefore, this system was then extended for urea and urease detection. As a result, the detection limits of urea and urease were recorded as 1.67 μM and 2.1 mU/mL, respectively. This development provides an interesting demonstration of the expanding list of applications of perovskite materials.
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Affiliation(s)
- Jia An
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing, 400044, China.,Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing, 400044, China
| | - Meizhu Chen
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing, 400044, China
| | - Guoyi Liu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing, 400044, China.,Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing, 400044, China
| | - Yongqin Hu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing, 400044, China.,Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing, 400044, China
| | - Rubing Chen
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing, 400044, China
| | - Ying Lyu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing, 400044, China
| | - Sanjiv Sharma
- Centre for NanoHealth, College of Engineering, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
| | - Yufei Liu
- Key Laboratory of Optoelectronic Technology & Systems, Chongqing University, Ministry of Education, Chongqing, 400044, China. .,Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing, 400044, China. .,Centre for NanoHealth, College of Engineering, Swansea University, Singleton Park, Swansea, SA2 8PP, UK.
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41
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Koo JW, Ho JS, An J, Zhang Y, Chua CK, Chong TH. A review on spacers and membranes: Conventional or hybrid additive manufacturing? Water Res 2021; 188:116497. [PMID: 33075598 DOI: 10.1016/j.watres.2020.116497] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 07/20/2020] [Revised: 09/11/2020] [Accepted: 10/03/2020] [Indexed: 05/27/2023]
Abstract
Over the past decade, 3D printing or additive manufacturing (AM) technology has seen great advancement in many aspects such as printing resolution, speed and cost. Membranes for water treatment experienced significant breakthroughs owing to the unique benefits of additive manufacturing. In particular, 3D printing's high degree of freedom in various aspects such as material and prototype design has helped to fabricate innovative spacers and membranes. However, there were conflicting reports on the feasibility of 3D printing, especially for membranes. Some research groups stated that technology limitations today made it impossible to 3D print membranes, but others showed that it was possible by successfully fabricating prototypes. This paper will provide a critical and comprehensive discussion on 3D printing specifically for spacers and membranes. Various 3D printing techniques will be introduced, and their suitability for membrane and spacer fabrication will be discussed. It will be followed by a review of past studies associated with 3D-printed spacers and membranes. A new category of additive manufacturing in the membrane water industry will be introduced here, known as hybrid additive manufacturing, to address the controversies of 3D printing for membrane. As AM technology continues to advance, its possibilities in the water treatment is limitless. Some insightful future trends will be provided at the end of the paper.
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Affiliation(s)
- Jing Wee Koo
- Interdisciplinary Graduate Programme, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798; Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141; Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Jia Shin Ho
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141
| | - Jia An
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Yi Zhang
- Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
| | - Chee Kai Chua
- Engineering Product Development Pillar, Singapore University of Technology and Design, 8 Somapah Road, Singapore 487372
| | - Tzyy Haur Chong
- Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.
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An J, Chen M, Hu N, Hu Y, Chen R, Lyu Y, Guo W, Li L, Liu Y. Carbon dots-based dual-emission ratiometric fluorescence sensor for dopamine detection. Spectrochim Acta A Mol Biomol Spectrosc 2020; 243:118804. [PMID: 32799189 DOI: 10.1016/j.saa.2020.118804] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 06/09/2020] [Revised: 07/27/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
The detection of Dopamine (DA) is significant for disease surveillance and prevention. However, the development of the precise and simple detection techniques is still at a preliminary stage due to their high tester requirements, time-consuming process, and low accuracy. In this work, we present a novel dual-emission ratiometric fluorescence sensing system based on a hybrid of carbon dots (CDs) and 7-amino-4-methylcoumarin (AMC) to quickly monitor the DA concentration. Linked via amide bonds, the CDs and AMC offered dual-emissions with peaks located at 455 and 505 nm, respectively, under a single excitation wavelength of 300 nm. Attributed to the fluorescence of the CDs and AMC in the nanohybrid system can be quenched by DA, the concentration of DA could be quantitatively detected by monitoring the ratiometric ratio change in fluorescent intensity. More importantly, the CDs-AMC-based dual-emission ratiometric fluorescence sensing system demonstrated a remarkable linear relationship in the range of 0-33.6 μM to detection of DA, and a low detection limit of 5.67 nM. Additionally, this sensor successfully applied to the detection of DA in real samples. Therefore, the ratiometric fluorescence sensing system may become promising to find potential applications in biomedical dopamine detection.
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Affiliation(s)
- Jia An
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China; Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing 400044, China
| | - Meizhu Chen
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Nan Hu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Yongqin Hu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China; Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing 400044, China
| | - Rubing Chen
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Ying Lyu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China
| | - Wenxi Guo
- College of Physical Science and Technology, Xiamen University, Xiamen 361005, China
| | - Lijie Li
- Centre for NanoHealth, College of Engineering, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| | - Yufei Liu
- Key Laboratory of Optoelectronic Technology & Systems (Chongqing University), Ministry of Education, Chongqing 400044, China; Collaborative Innovation Center for Brain Science, Chongqing University, Chongqing 400044, China; Centre for NanoHealth, College of Engineering, Swansea University, Singleton Park, Swansea SA2 8PP, UK.
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Zhou W, Feng Z, An J, Wang H, Zhang Y. Combined reconstruction plate fixation and submandibular gland translocation for the management of medication-related osteonecrosis of the mandible. Int J Oral Maxillofac Surg 2020; 49:1584-1588. [DOI: 10.1016/j.ijom.2020.05.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/31/2020] [Accepted: 05/18/2020] [Indexed: 10/24/2022]
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An J, Zhang XS, Liang XF, Meng L. [Spatio-temporal clustering of hepatitis A in Gansu provice, 2004-2018]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1319-1323. [PMID: 32867443 DOI: 10.3760/cma.j.cn112338-20191113-00804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the characteristics of spatiotemporal clustering on hepatitis A in Gansu province and to provide evidence for hepatitis A prevention and control. Methods: Data related to hepatitis A were retrieved from National Notifiable Disease Report System, ArcGIS 10.3 and SaTScan 9.1 in Gansu province from 2004 to 2018. Results: The annual average report incidence rate of hepatitis A was 10.91/100 000, showing a descending trend with no periodic or seasonal features. After the implementation of national expanded immunization program, high annual incidence rates had been seen in Linxia Hui autonomous prefecture and Gannan Tibetan autonomous prefecture. From 2004 to 2012, the lowest RR value appeared in the 0-9 age group (P=0.000) while the highest RR value was in the over 60 age group during 2013-2018 except for the age 0-9 group in 2015. The annual average incidence rate was increasing from south to north and west to east, across the territory. Results from the temporal scanning program revealed that the incidence of hepatitis A was temporally aggregated from 2004 to 2018. For spatio-temporal scanning of 2004-2008, data showed one most likely cluster area (radius: 91.95 km, Time frame: 2004-2005), apparel mainly in Linxia and Longnan cities. Results from the spatio-temporal scanning program of 2009-2018 also showed that the most likely cluster areas (radius: 183.26 km, Time frame: 2009-2012) were in Gannan, Linxia, Dingxi and Longnan areas. Conclusions: The reported incidence rates of hepatitis A were declining, without significant periodic or seasonal pattern in Gansu province from 2004 to 2018. In the 0-9 years-old group, the incidence rate showed the lowest, while the highest was in the 60 year-olds group. Spatio-temporal clustering of hepatitis A was observed in Gansu province from 2004 to 2018. Strategies on prevention and control of the disease should be targeted in the southwest regions of the province.
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Affiliation(s)
- J An
- Institute for Immunization Program, Gansu Provincial Center for Disease Control and Prevention, Lanzhou 730000, China
| | - X S Zhang
- Institute for Immunization Program, Gansu Provincial Center for Disease Control and Prevention, Lanzhou 730000, China
| | - X F Liang
- Institute for Immunization Program, Gansu Provincial Center for Disease Control and Prevention, Lanzhou 730000, China
| | - L Meng
- Institute for Immunization Program, Gansu Provincial Center for Disease Control and Prevention, Lanzhou 730000, China
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Wu R, Su R, Ding T, Xue H, An J, Jiang L, Li XF, Wang C. SAT0278 LOW-DOSE IL-2 RESTORES TREG-MEDIATED IMMUNE TOLERANCE IN PATIENTS WITH ANCA-ASSOCIATED VASCULITIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a group of autoimmune disease that can cause systemic organ damage, including granulomatosis with polyangiitis(GPA), microscopic polyangiitis (MPA), and eosinophilic granulomatosis with polyangiitis(EGPA)[1]. Several observations have showed that the breakdown of immune tolerance was involved in the pathogenesis of AAV [2], furthermore, a single, open and clinical trial demonstrates that IL-2 can be used to treat patients with GPA [3]. But there is still a lack of understanding of the relationship between Th17 / Treg and AAV and evidence for the therapeutic effect of IL-2 on AAV, which needs further exploration.Objectives:We first measured the absolute number of CD4+T subsets in peripheral blood of patients to explore the pathogenesis of AAV, and then investigated the effects of short-term and low-dose recombinant human IL-2 (rhIL-2) on CD4+T subsets of patients to analyze the regulatory effect of IL-2 on AAV.Methods:49 patients with AAV, hospitalized at the Second Hospital of Shanxi Medical University from the May 2016 to the November 2019 were enrolled, including 36 patients who were only received conventional glucocorticoids and DMARDs, and other 13 patients who were not only received these treatments but were also injected subcutaneously rhIL-2(50WIU/day for a 5-day course). 31 age and gender-matched healthy adults were selected as controls. The absolute number of Th17 and Treg cells in peripheral blood of health controls and the patients before and after treatment was detected by flow cytometry.Results:There was significant decreased level of Treg cells in the patients with AAV compared with healthy controls (P<0.001) leading to a higher Th17/Treg ratio in the patients with AAV, but there was no statistically significant in the absolute number of Th17 cells between the patients and healthy controls. After the treatment of short-term and low-dose IL-2, there was a significant increase in the absolute number of Treg cells (P<0.01) leading to a decrease in the ratio of Th17 and Treg (p<0.05).The absolute number of Th17 had a trend towards higher values but was not statistical significance.Conclusion:The difference of Treg cells between the patients and healthy controls suggested that the decreased number of Treg cells failed to control autoimmune inflammatory response contributing to the pathogenesis of AAV. After the treatment of short-term and low-dose rhIL-2, there was a more significant increase in the absolute number of Treg cells showing that IL-2 could selectively stimulate the growth of Treg cells and restore the Treg-mediated immune tolerance in patients with AAV to achieve disease remission.References:[1]Cosmi, L.,Th17 and Treg lymphocytes as cellular biomarkers of disease activity in Granulomatosis with Polyangiitis.Eur J Immunol, 2017.47(4): p. 633-636.[2]Pagnoux, C.,Updates in ANCA-associated vasculitis.Eur J Rheumatol, 2016.3: p. 122-133.[3]Rosenzwajg, M., et al.,Immunological and clinical effects of low-dose interleukin-2 across 11 autoimmune diseases in a single, open clinical trial.Annals of the Rheumatic Diseases, 2019.78(2): p. 209-217.Disclosure of Interests:None declared
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Wu R, Su R, Ding T, Xue H, An J, LI XF, Wang C. THU0325 REDUCED OF TREG CELLS ASSOCIATED WITH THE DISEASE ACTIVITY OF ANCA-ASSOCIATED VASCULITIS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a group of autoimmune disease that can cause systemic organ damage, characterized with the presence of abnormal antibodies (ANCAs) in the circulation and the small- and medium-vessel vasculitis[1].However,the etiology of AAV remained unclear. Several observations have showed that the breakdown of immune tolerance caused by many complex interactions was involved in the pathogenesis of AAV[2].It has been confirmed that the disorder of the CD4+T cell,especially the imbalance of Th17 and Treg cells can destroy the immune tolerance and cause many autoimmune disease[3]. But the relationship between the Th17/Treg and AAV is unknown.Objectives:We investigated the absolute numbers of CD4+T subsets cells in peripheral blood of patients with AAV and healthy adults,and then compared them in different disease activity of AAV to explore the role of CD4+T subsets cells in the pathogenesis and development of AAV.Methods:49 patients with AAV,hospitalized at the Second Hospital of Shanxi Medical University from the May 2016 to the November 2019 were enrolled, and 31 age and gender-matched healthy adults were anticipated as controls.According to BVAS, the patients were divided into disease-activity group (BVAS≥15, n=27) and non-disease-activity group (BVAS<15, n=22). The absolute numbers of CD4+T subsets cells including Th17 and Tregs in peripheral blood of these individuals were detected by flow cytometry.We analyzed whether there was difference of CD4+T subsets between the patients and healthy controls,and between disease-activity group and non-disease-activity group.Results:There was significant decreased level of Treg cells in the patients with AAV compared with healthy controls,especially in the disease-activity group. The absolute numbers of Treg cells was decreased in the patients with AAV compared with healthy controls (P<0.001) leading to a higher Th17/Treg ratio in the patients (P<0.01).Similarly,the absolute number of Treg cells was decreased in the disease- activity group (P<0.01) compared with the non-disease-activity group, and the absolute number of Treg cells was significant negative correlation with the disease activity indexes such as BVAS (r=-0.342,P=0.016), erythrocyte sedimentation rate(ESR) (r=-0.315,P=0.027) and C-reactive protein(CRP) (r=-0.305,P=0.033). But there was no statistically significant in the absolute number of Th17 cells between the patients and healthy controls, and between disease-activity group and non-disease-activity group.Conclusion:The results we investigated here suggested that the decreased number of Treg cells failed to control autoimmune inflammatory response and maintain immune tolerance, and the disease activity of AAV was associated with the reduced number of Treg cells.Figure 1.(A-C) Characteristics of the absolute number of Th17 cells and Treg cells in peripheral blood of healthy controls (n=31) and the patients with AAV (n=49). There was significant decreased level of Treg cells in the patients with AAV compared with healthy controls leading to a higher Th17/Treg ratio in the patients with AAV. (D-F) The absolute number of Treg cells was decreased in the disease- activity group (n=27) compared with the non-disease-activity group (n=21). The absolute number of Th17 cells and Treg cells was detected by flow cytometry. Statistical analyses were performed by the Mann-Whitney U test. *p<0.05,**p<0.01, ***p<0.001.References:[1]Cosmi, L., Th17 and Treg lymphocytes as cellular biomarkers of disease activity in Granulomatosis with Polyangiitis. Eur J Immunol, 2017.47(4): p. 633-636.[2]Pagnoux, C.,Updates in ANCA-associated vasculitis.Eur J Rheumatol, 2016.3: p. 122-133.[3]Diller, M.L., et al., Balancing Inflammation: The Link between Th17 and Regulatory T Cells. Mediators Inflamm, 2016.2016: p. 6309219.Disclosure of Interests:None declared
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Jie B, Yao B, Li R, An J, Zhang Y, He Y. Post-traumatic maxillofacial reconstruction with vascularized flaps and digital techniques: 10-year experience. Int J Oral Maxillofac Surg 2020; 49:1408-1415. [PMID: 32404244 DOI: 10.1016/j.ijom.2020.04.012] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/22/2020] [Accepted: 04/21/2020] [Indexed: 12/24/2022]
Abstract
The aim of this study was to present a treatment protocol for the individual repair of post-traumatic maxillofacial bone defects with vascularized flaps assisted by digital techniques. This study reviewed 20 patients with post-traumatic maxillofacial bone defects who underwent reconstruction with composite vascularized bone flaps assisted by digital techniques between April 2009 and July 2019. Preoperative computed tomography (CT) data were imported into ProPlan CMF software to complete virtual fracture reduction and reconstruction. Surgical navigation, three-dimensionally (3D) printed surgical plates, and prefabricated titanium mesh/plates were used to guide the actual surgery. All patients underwent open reduction and internal fixation and reconstruction surgery in one stage. CT data obtained at 1 week postoperative were imported into Geomagic Control software to evaluate the accuracy of the virtual surgical plan. The mean follow-up interval was 24 months (range 6-96 months). Donor and recipient site morbidity and second-stage procedures to rehabilitate the dentition and cosmetic organs were recorded. The flap success rate was 100%. Nine patients had deep circumflex iliac artery flaps and eleven patients had fibula flaps. The accuracy of computer-assisted surgery was 4.4±0.8mm. There were no postoperative complications. This study is novel in presenting a treatment protocol for individual computer-assisted reconstruction for post-traumatic maxillofacial bone defects with vascularized flaps.
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Affiliation(s)
- B Jie
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - B Yao
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - R Li
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - J An
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y Zhang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - Y He
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China.
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Yang W, Bai X, Zhu W, Kiran R, An J, Chua CK, Zhou K. 3D Printing of Polymeric Multi-Layer Micro-Perforated Panels for Tunable Wideband Sound Absorption. Polymers (Basel) 2020; 12:E360. [PMID: 32041304 PMCID: PMC7077450 DOI: 10.3390/polym12020360] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 01/30/2020] [Accepted: 02/03/2020] [Indexed: 12/03/2022] Open
Abstract
The increasing concern about noise pollution has accelerated the development of acoustic absorption and damping devices. However, conventional subtractive manufacturing can only fabricate absorption devices with simple geometric shapes that are unable to achieve high absorption coefficients in wide frequency ranges. In this paper, novel multi-layer micro-perforated panels (MPPs) with tunable wideband absorption are designed and fabricated by 3D printing or additive manufacturing. Selective laser sintering (SLS), which is an advanced powder-based 3D printing technique, is newly introduced for MPP manufacturing with polyamide 12 as the feedstock. The acoustic performances of the MPPs are investigated by theoretical, numerical, and experimental methods. The results reveal that the absorption frequency bandwidths of the structures are wider than those of conventional single-layer MPPs, while the absorption coefficients remain comparable or even higher. The frequency ranges can be tuned by varying the air gap distances and the inter-layer distances. Furthermore, an optimization method is introduced for structural designs of MPPs with the most effective sound absorption performances in the target frequency ranges. This study reveals the potential of 3D printing to fabricate acoustic devices with effective tunable sound absorption behaviors and provides an optimization method for future structural design of the wideband sound absorption devices.
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Affiliation(s)
- Wenjing Yang
- Singapore Center for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (W.Y.); (X.B.); (W.Z.); (R.K.); (J.A.)
| | - Xueyu Bai
- Singapore Center for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (W.Y.); (X.B.); (W.Z.); (R.K.); (J.A.)
| | - Wei Zhu
- Singapore Center for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (W.Y.); (X.B.); (W.Z.); (R.K.); (J.A.)
| | - Raj Kiran
- Singapore Center for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (W.Y.); (X.B.); (W.Z.); (R.K.); (J.A.)
| | - Jia An
- Singapore Center for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (W.Y.); (X.B.); (W.Z.); (R.K.); (J.A.)
| | - Chee Kai Chua
- Engineering Product Development Pillar, Singapore University of Technology and Design, 8 Somapah Rd, Singapore 487372, Singapore;
| | - Kun Zhou
- Singapore Center for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore; (W.Y.); (X.B.); (W.Z.); (R.K.); (J.A.)
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Johnson F, Jansen S, Liu A, Brandstädter C, Lu D, Nagelberg A, Farnsworth D, Sihota T, An J, Forcina G, Prudova A, Luu J, Sorensen P, Varmus H, Somwar R, Dixon S, Jones S, Becker K, Morin G, Lockwood W. B13 Selectively Targeting Lung Cancer with a Novel Small Molecule that Induces Lethality Through Dual Inhibition of Disulfide Reductases. J Thorac Oncol 2020. [DOI: 10.1016/j.jtho.2019.12.082] [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: 11/26/2022]
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