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Ma L, Liu AQ, Guo H, Xuan K. [Dental pulp stem cells in tooth regeneration: advancement and emerging directions]. Zhonghua Kou Qiang Yi Xue Za Zhi 2024; 59:496-501. [PMID: 38637004 DOI: 10.3760/cma.j.cn112144-20240130-00048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Regenerating tissues similar to dental structure with normal function are putatively to be the aim in tooth regeneration filed. Currently, researchers preliminarily achieved tooth regeneration by applying dental pulp stem cells (DPSC) and stem cells from human exfoliated deciduous teeth (SHED). However, the regeneration efficiency remains unstable and needs further investigation. The development of single-cell RNA sequencing and organoid culture system provide potential of precise, targeted and controllable functional regeneration. This article reviews the current state of DPSC/SHED on tooth regeneration, and analyzes characteristics and hotspots of them, aiming to shed light on clinical translational application of stable and efficient tooth regeneration.
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Affiliation(s)
- L Ma
- Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Xi'an 710032, China
| | - A Q Liu
- Department of Stomatology, 985 Hospital of Joint Logistics Support Force, Taiyuan 030000, China
| | - H Guo
- Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Xi'an 710032, China
| | - K Xuan
- Department of Preventive Dentistry, School of Stomatology, The Fourth Military Medical University, State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Xi'an 710032, China
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2
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Wang D, Du XJ, Li XX, Liu AQ, Hu WJ. [A summary on surveillance system of occupational disease under the framework of National Health Insurance Informatization Project]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:383-387. [PMID: 37248088 DOI: 10.3760/cma.j.cn121094-20221009-00482] [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: 05/31/2023]
Abstract
The surveillance of occupational disease has entered a new stage ofdevelopment, with the implementation of the national health informatization project. To improve the efficiency and quality of occupational disease monitoring information reporting in this paper, the system architecture and related management regulations, as long as the major changes and achievement of "surveillance system of occupational disease and health hazards information" under the framework of National Health Insurance Informatization Project were elaborated. The deficiencies existing in the system were analyzed, and expectation for the construction of the occupational disease surveillance system was addressed.
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Affiliation(s)
- D Wang
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - X J Du
- Information Center for Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - X X Li
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - A Q Liu
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - W J Hu
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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3
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Liu AQ, Wang D, Li XX, Wu JH, Hu WJ. [Investigation and analysis of late reporting and under-reporting of occupational diseases from 2018 to 2020 in China]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:353-357. [PMID: 37248081 DOI: 10.3760/cma.j.cn121094-20221009-00480] [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: 05/31/2023]
Abstract
Objective: To understand the late reporting and the under-reporting of occupational disease from 2018 to 2020 in China and analyze the causes, so as to provide scientific evidence for improving the quality of occupational disease reports in China, timely acquiring the incidence of occupational disease, and assessing the occupational hazards. Methods: From May to December 2021, A total of 320 occupational disease diagnostic institutions were selected for investigation. The original documents of occupational disease diagnosis cases from 2018 to 2020 were compared with the online reported cases, and late reported and under-reported cases of occupational disease were analyzed. Results: A total of 32207 diagnosed cases from 2018 to 2020 were investigated, including 28934 confirmed cases and 3273 cases without occupational disease. The overall late reported rate and under-reported rate of confirmed cases were 20.2% and 2.1%, respectively. There were significant differences in the rate of late reporting and under-reporting of occupational diseases in different regions and different types of diagnostic institutions (P<0.001). The southwest region had the highest rates of late reporting and under-reporting, 61.6% and 7.9% respectively. The late reported rate of all kinds of occupational diseases was about 15.0%, and the under-reported rate was from 1.5.0% to 5.0%. Conclusion: At present, the phenomenon of late reporting and under-reporting occupational diseases is still obvious. It is necessary to strengthen the inspection of occupational disease reporting, improve the quality of occupational disease reporting, and provide scientific basis for the formulation of occupational disease prevention and control policies.
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Affiliation(s)
- A Q Liu
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - D Wang
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - X X Li
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J H Wu
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - W J Hu
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Elsayed A, Othman AM, Sabry YM, Marty F, Omran H, Khalil D, Liu AQ, Bourouina T. Substrate Signal Inhibition in Raman Analysis of Microplastic Particles. ACS Omega 2023; 8:9854-9860. [PMID: 36969403 PMCID: PMC10034780 DOI: 10.1021/acsomega.2c06536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 12/22/2022] [Indexed: 06/18/2023]
Abstract
In Raman analysis, the substrate material serves very often for signal enhancement, especially when metallic surfaces are involved; however, in other cases, the substrate has an opposite effect as it is the source of a parasitic signal preventing the observation of the sample material of interest. This is particularly true with the advent of microfluidic devices involving either silicon or polymer surfaces. On the other hand, in a vast majority of Raman experiments, the analysis is made on a horizontal support holding the sample of interest. In our paper, we report that a simple tilting of the supporting substrate, in this case, silicon, can drastically decrease and eventually inhibit the Raman signal of the substrate material, leading to an easier observation of the target analyte of the sample, in this case, microplastic particles. This effect is very pronounced especially when looking for tiny particles. Explanation of this trend is provided thanks to a supporting experiment and further numerical simulations that suggest that the lensing effect of the particles plays an important role. These findings may be useful for Raman analysis of other microscale particles having curved shapes, including biological cells.
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Affiliation(s)
- Ahmed
A. Elsayed
- CNRS
ESYCOM UMR 9007, Noisy-le-Grand, ESIEE, Université Gustave Eiffel, Paris 93162, France
| | - Ahmed M. Othman
- CNRS
ESYCOM UMR 9007, Noisy-le-Grand, ESIEE, Université Gustave Eiffel, Paris 93162, France
- Si-Ware
Systems, 3 Khalid Ibn
Al-Waleed Street, Heliopolis, Cairo 11361, Egypt
| | - Yasser M. Sabry
- Si-Ware
Systems, 3 Khalid Ibn
Al-Waleed Street, Heliopolis, Cairo 11361, Egypt
- Faculty
of Engineering, Ain-Shams University, 1 Elsarayat Street, Abbassia, Cairo 11535, Egypt
| | - Frédéric Marty
- CNRS
ESYCOM UMR 9007, Noisy-le-Grand, ESIEE, Université Gustave Eiffel, Paris 93162, France
| | - Haitham Omran
- Faculty
of Information Engineering and Technology, Laboratory of Micro Optics, German University in Cairo, Cairo 11835, Egypt
| | - Diaa Khalil
- Si-Ware
Systems, 3 Khalid Ibn
Al-Waleed Street, Heliopolis, Cairo 11361, Egypt
- Faculty
of Engineering, Ain-Shams University, 1 Elsarayat Street, Abbassia, Cairo 11535, Egypt
| | - Ai-Qun Liu
- CNRS
ESYCOM UMR 9007, Noisy-le-Grand, ESIEE, Université Gustave Eiffel, Paris 93162, France
- School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Tarik Bourouina
- CNRS
ESYCOM UMR 9007, Noisy-le-Grand, ESIEE, Université Gustave Eiffel, Paris 93162, France
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Diao SP, Zhuang YS, Huang YQ, Zhou ZH, Liu AQ, Hong MF. Analysis of risk factors for neurological symptoms in patients with purely hepatic Wilson's disease at diagnosis. BMC Neurol 2023; 23:89. [PMID: 36855079 PMCID: PMC9972690 DOI: 10.1186/s12883-023-03105-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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 02/02/2023] [Indexed: 03/02/2023] Open
Abstract
OBJECTIVE To analyze and explore the risk factors for neurological symptoms in patients with purely hepatic Wilson's disease (WD) at diagnosis. METHODS This retrospective study was conducted at the First Affiliated Hospital of the Guangdong Pharmaceutical University on 68 patients with purely hepatic WD aged 20.6 ± 7.2 years. The physical examinations, laboratory tests, color Doppler ultrasound of the liver and spleen, and magnetic resonance imaging (MRI) of the brain were performed. RESULTS The elevated alanine transaminase (ALT) and aspartate transaminase (AST) levels and 24-h urinary copper level were higher in the purely hepatic WD who developed neurological symptoms (NH-WD) group than those in the purely hepatic WD (H-WD) group. Adherence to low-copper diet, and daily oral doses of penicillamine (PCA) and zinc gluconate (ZG) were lower in the NH-WD group than those in the H-WD group. Logistic regression analysis showed that insufficient doses of PCA and ZG were associated with the development of neurological symptoms in patients with purely hepatic WD at diagnosis. CONCLUSION The development of neurological symptoms in patients with purely hepatic WD was closely associated with insufficient doses of PCA and ZG, and the inferior efficacy of copper-chelating agents. During the course of anti-copper treatment, the patient's medical status and the efficacy of copper excretion should be closely monitored.
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Affiliation(s)
- Sheng-Peng Diao
- grid.412601.00000 0004 1760 3828Department of Neurology, The First Affiliated Hospital, Jinan University, Guangzhou, 610630 Guangdong China ,grid.477976.c0000 0004 1758 4014Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, 510062 Guangdong China
| | - Yang-Sha Zhuang
- grid.477976.c0000 0004 1758 4014Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, 510062 Guangdong China
| | - Ye-Qing Huang
- grid.477976.c0000 0004 1758 4014Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, 510062 Guangdong China
| | - Zhi-Hua Zhou
- grid.477976.c0000 0004 1758 4014Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, 510062 Guangdong China
| | - Ai-Qun Liu
- grid.477976.c0000 0004 1758 4014Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, 510062 Guangdong China
| | - Ming-Fan Hong
- Department of Neurology, The First Affiliated Hospital, Jinan University, Guangzhou, 610630, Guangdong, China. .,Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, 510062, Guangdong, China.
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Diao SP, Lǚ CX, Huang YQ, Zhou ZH, Liu AQ, Hong MF. Linear structural features of Wilson's disease and its correlation with neurological symptoms. Medicine (Baltimore) 2022; 101:e31386. [PMID: 36550817 PMCID: PMC9771331 DOI: 10.1097/md.0000000000031386] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
To measure the linear structure of the brain in patients with Wilson's disease (WD) and analyze its correlation with neurological symptoms. A total of 174 patients diagnosed with WD were enrolled. According to the type of clinical presentation, the patients with WD were divided into two groups: neurological (NWD) and hepatic (HWD). Sixty healthy volunteers were assigned to a control group. All patients with WD and healthy controls underwent brain magnetic resonance imaging (MRI). The severity of the neurological symptoms was assessed using the Burke Fahn Marsden Movement subscale (BFM-M). Linear brain measurements were performed using T1-weighted MRI scans of all the patients, and the correlation between these linear indices and BFM-M score was investigated. The Huckman index, third ventricle width, and sulcus width of the NWD group were significantly higher than those of the HWD and control groups (P < .05). The frontal horn index, ventricular index, and lateral ventricular body width index of the NWD group were significantly lower than those of the HWD and control groups (P < .05). The Huckman index and third ventricle width of the HWD group were higher than those of the control group (P < .05), whereas the body width index of the lateral ventricle was lower than that of the control group (P < .05). The BFM-M score correlated with the Huckman index (r = 0.29, P < .05), third ventricle width (r = 0.426, P < .001), and lateral ventricular body width index (r = -0.19, P < .05). This study demonstrated significant changes in the linear structure of patients with WD. Linear brain measurement analysis could be used as a potential method to assess the severity of neurological symptoms in WD.
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Affiliation(s)
- Sheng-Peng Diao
- Department of Neurology, The First Affiliated Hospital, Jinan University, Guangzhou, China
- Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, China
| | - Chun-Xiao Lǚ
- Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, China
| | - Ye-Qing Huang
- Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, China
| | - Zhi-Hua Zhou
- Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, China
| | - Ai-Qun Liu
- Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, China
| | - Ming-Fan Hong
- Department of Neurology, The First Affiliated Hospital, Jinan University, Guangzhou, China
- Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, China
- *Correspondence: Ming-Fan Hong, Department of Neurology, The First Affiliated Hospital, Jinan University, 613 Huangpu Road West, Tianhe, Guangzhou, Guangdong 510630, China (e-mail: )
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Chao JS, Zhu Q, Chen DS, Chen GM, Xie XQ, Liu AQ, Zhao SL, Sun HC. Combined analysis of imaging tumor capsule with imaging tumor size guides the width of resection margin for solitary hepatocellular carcinoma. Hepatobiliary Pancreat Dis Int 2022; 21:551-558. [PMID: 35000845 DOI: 10.1016/j.hbpd.2021.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 12/13/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND The optimal width of resection margin (RM) for hepatocellular carcinoma (HCC) remains controversial. This study aimed to investigate the value of imaging tumor capsule (ITC) and imaging tumor size (ITS) in guiding RM width for patients with HCC. METHODS Patients who underwent hepatectomy for HCC in our center were retrospectively reviewed. ITC (complete/incomplete) and ITS (≤ 3 cm/> 3 cm) were assessed by preoperative magnetic resonance imaging (MRI). Using subgroup analyses based on ITC and ITS, the impact of RM width [narrow RM (< 5 mm)/wide RM (≥ 5 mm)] on recurrence-free survival (RFS), overall survival (OS), and RM recurrence was analyzed. RESULTS A total of 247 patients with solitary HCC were included. ITC and ITS were independent predictors for RFS and OS in the entire cohort. In patients with ITS ≤ 3 cm, neither ITC nor RM width showed a significant impact on prognosis, and the incidence of RM recurrence was comparable between the narrow RM and wide RM groups (15.6% vs. 4.3%, P = 0.337). In patients with ITS > 3 cm and complete ITC, the narrow RM group exhibited comparable RFS, OS, and incidence of RM recurrence with the wide RM group (P = 0.606, 0.916, and 0.649, respectively). However, in patients with ITS > 3 cm and incomplete ITC, the wide RM group showed better RFS and OS and a lower incidence of RM recurrence compared with the narrow RM group (P = 0.037, 0.018, and 0.046, respectively). CONCLUSIONS As MRI-based preoperative markers, conjoint analysis of ITC with ITS aids in determining RM width for solitary HCC patients. Narrow RM is applicable in patients with ITS ≤ 3 cm regardless of ITC status and in those with ITS > 3 cm and complete ITC. Wide RM is preferred in those with ITS > 3 cm and incomplete ITC.
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Affiliation(s)
- Jia-Shuo Chao
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - Qi Zhu
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - De-Sheng Chen
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - Gui-Ming Chen
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - Xue-Qian Xie
- Department of Radiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - Ai-Qun Liu
- Department of Radiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - Sen-Lin Zhao
- Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Shanghai 200032, China
| | - Hong-Cheng Sun
- Department of General Surgery, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China.
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Diao SP, Chen SF, Liu AQ, Zhou ZH, Peng ZX, Hong MF. Elderly onset of MELAS in a male: A case report. Front Neurol 2022; 13:1018529. [PMID: 36530638 PMCID: PMC9751332 DOI: 10.3389/fneur.2022.1018529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 11/09/2022] [Indexed: 10/28/2023] Open
Abstract
BACKGROUND Mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes (MELAS) is one of the most common maternally inherited mitochondrial diseases which rarely affects elderly people. CASE PRESENTATION We reported the case of a 61-year-old male patient with MELAS. He was experiencing acute migraine-like headaches as the first symptoms. Laboratory data showed elevated lactate and creatine kinase levels. Brain magnetic resonance imaging (MRI) found a high signal intensity lesion in the left occipital-temporal-parietal lobe on diffusion-weighted imaging (DWI). Magnetic resonance angiography (MRA) revealed reversible vasoconstriction of the middle cerebral arteries and superficial temporal arteries. A muscle biopsy suggested minor muscle damage. A genetic study revealed a mitochondrial DNA A3243G mutation. CONCLUSION Elderly onset of MELAS is rare and easily misdiagnosed as an ischemic stroke. MELAS with the onset of stroke-like episodes should be considered in adult or elderly patients with imaging findings that are atypical for cerebral infarction. The use of multimodal MRI in the clinical diagnosis of MELAS could be extremely beneficial.
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Affiliation(s)
| | | | | | | | | | - Ming-Fan Hong
- Department of Neurology, College of Clinical Medicine, The First Affiliated Hospital, Guangdong Pharmaceutical University, Guangzhou, China
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Tang XP, Chen JF, Liu AQ, Shen YH, Huang YL. Clinical application of endoscopic ultrasonography in evaluation of colorectal and peri-colorectal lesions. Shijie Huaren Xiaohua Zazhi 2022; 30:647-654. [DOI: 10.11569/wcjd.v30.i14.647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Endoscopic ultrasonography (EUS) has the functions of both endoscopy and ultrasound. Due to the complex anatomical structure of the intestine, there are few studies on EUS in colorectal lesions.
AIM To explore the clinical application value of EUS in the diagnosis of colorectal and peri-colorectal lesions.
METHODS We retrospectively analyzed the examination results of 95 patients detected by endoscopic miniprobe sonography (MPS) and linear EUS from September 2018 to July 2021, which were then compared to postoperative pathology. The kappa test was used in statistical analysis.
RESULTS Using postoperative pathology as the golden standard, the accuracy of linear EUS in diagnosing the depth of rectal cancer invasion (T stage) was 73.9% (17/23 cases), including T1 (2/4 cases), T2 (4/6 cases), T3 (6/7 cases) , and T4 (5/ 5 cases) stages. The accuracy of linear EUS in diagnosing regional lymph node metastasis (N stage) was 91.3% (21/23 cases), including N0 (14/15 cases) and N1 (7/8 cases) stages. The consistency was high (kappa value = 0.782, P < 0.01). During preoperative evaluation of colorectal adenoma or early cancer before endoscopic submucosal dissection (ESD), the accuracy of MPS in diagnosing the depth of tumor invasion was 87.1% (27/31 cases), and the consistency was moderate (kappa value = 0.665, P < 0.01). The accuracy of MPS in diagnosing the origin and type of colorectal submucosal lesions was 95.5% (21/22 cases), and the consistency was high (kappa value = 0.919, P < 0.01). The accuracy of endoscopic ultrasonography-guided fine-needle aspiration in determining rectal and peri-rectal lesions was 70.0% (7/10 cases), and the consistency was moderate (kappa value = 0.565, P < 0.01).
CONCLUSION According to the specific location and size of colorectal and peri-colorectal lesions, selective use of the MPS and linear EUS is of great value with regard to T/N staging of rectal cancer, preoperative evaluation of ESD, determination of the characteristics of colorectal-submucosal bulging lesions, and acquisition of lesion tissue of rectal and peri-rectal lesions.
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Affiliation(s)
- Xi-Ping Tang
- Guangxi Medical University Cancer Hospital, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Jin-Feng Chen
- Guangxi Medical University Cancer Hospital, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Ai-Qun Liu
- Guangxi Medical University Cancer Hospital, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Yan-Hua Shen
- Guangxi Medical University Cancer Hospital, Nanning 530021, Guangxi Zhuang Autonomous Region, China
| | - Yue-Li Huang
- Guangxi Medical University Cancer Hospital, Nanning 530021, Guangxi Zhuang Autonomous Region, China
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Liu AQ, Hui RWH. Hope and healing without borders: an interview with Dr Shannon Melissa Chan. Hong Kong Med J 2022; 28:188-190. [PMID: 35470810 DOI: 10.12809/hkmj-hc202204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- A Q Liu
- Department of Surgery, Prince of Wales Hospital, Hong Kong
| | - R W H Hui
- Department of Medicine, School of Clinical Medicine, The University of Hong Kong, Hong Kong
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11
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Yang QH, Liu AQ, Zhang JX, Pan SH, Wang LL, Huang GY, Shi H. [Early histological changes detected by confocal microscopy in patients with advanced keratoconus receiving collagen cross-linking therapy]. Zhonghua Yan Ke Za Zhi 2022; 58:112-119. [PMID: 35144351 DOI: 10.3760/cma.j.cn112142-20210912-00423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the early histological changes by confocal microscopy of patients with advanced keratoconus receiving collagen cross-linking therapy. Methods: In this prospective case series study, confocal microscopy was used to observe 23 patients (32 eyes) who were diagnosed with advanced keratoconus and treated with collagen cross-linking at the Department of Ophthalmology, Chinese PLA General Hospital from September 2017 to March 2019, aged (26±10) year. All patients were examined before and at 1 week, 1 month and 3 months after the therapy. The tissue structure changes, the density of nerve fibers, stromal cells and endothelial cells, and the depth of the corneal stroma were recorded and compared. The overall differences at different times were compared by repeated measurement analysis of variance or Friedman test, and the pairwise comparison was corrected by LSD-t test or Bonferroni test. Results: One week after collagen cross-linking, the epithelial cells were in the repair stage, showing an increased nucleolar size and an enhanced reflection, and the activated cells could be detected under the epithelium. The superficial corneal stroma was swollen and spongiform, while the deep corneal stroma was patchy or cord-like, scattered and with a strong reflection. One month after the therapy, epithelial cells recovered, subepithelial nerves began to grow, the superficial corneal stroma still showed a spongy structure, and the reflection was further enhanced. The activation of the deep corneal stroma exhibited as thicker plaques or cord-like structure. Three months after the therapy, the continuous elongation of single nerve fibers could be detected occasionally. There was statistically significant difference in the density of nerve fibers before and early after the therapy (F=233.30, P<0.001). Compared with the preoperative value [(14.60±2.57) mm/mm2], the density of subepithelial nerve fibers decreased significantly in the early postoperative period, which was (0.51±0.31), (3.65±2.21) and (8.50± 4.02) mm/mm2, respectively, at 1 week, 1 month and 3 months, and there were significant differences between different time points (all P<0.05). There was also statistically significant differences in the density of anterior stromal cells before and early after the therapy (χ2=92.48, P<0.001). Compared with the preoperative value [347.00(345.00,395.75) cells/mm2] the density of anterior stromal cells decreased significantly in the early postoperative period, which was 2.00(1.00,5.75), 2.50(1.00,5.75) and 79.00(64.25,94.00) cells/mm2, respectively, at 1 week, 1 month and 3 months, and there were significant differences between different time points (all P<0.05). Within 3 months after the therapy, the depth of the corneal stroma observed by confocal microscopy ranged from 245 to 536 μm, with an average of (400.56±86.12) μm. Histologically, the depth of the corneal stroma ranged from 245 to 536 μm [average, (402.13±89.20) μm], from 251 to 527 μm [average, (399.88±85.92) μm] and from 259 to 530 μm [average, (399.69±85.94) μm] at 1 week, 1 month and 3 months, respectively, with no significant difference (F=0.797, P=0.455). There was no significant difference in the density of posterior stromal cells [(260.6±33.2) cells/mm2 preoperatively, (264.4±44.5) cells/mm2 at 1 week, (263.9±37.6) cells/mm2 at 1 month and (266.3±40.2) cells/mm2 at 3 months] and endothelial cells [(2 707±152.6) cells/mm2 preoperatively, (2 704±148.5) cells/mm2 at 1 week, (2 705±152.6) cells/mm2 at 1 month and (2 704±150.1) cells/mm2 at 3 months] between different time points (F=1.380, 1.011; P=0.259, 0.351). Conclusions: Confocal microscopy is able to clearly document the early morphological characteristics after collagen cross-linking in the treatment of keratoconus, including the epithelial and subepithelial nerve injury repair, the spongiform superficial corneal stroma, the patchy or cord-like deep corneal stroma, and the relatively stable stromal depth change.
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Affiliation(s)
- Q H Yang
- The Ophthalmology Division of Chinese PLA General Hospital, Beijing 100853, China
| | - A Q Liu
- The Ophthalmology Division of Chinese PLA General Hospital, Beijing 100853, China
| | - J X Zhang
- The Ophthalmology Division of Chinese PLA General Hospital, Beijing 100853, China
| | - S H Pan
- The Ophthalmology Division of Chinese PLA General Hospital, Beijing 100853, China
| | - L L Wang
- The Ophthalmology Division of Chinese PLA General Hospital, Beijing 100853, China
| | - G Y Huang
- The Ophthalmology Division of Chinese PLA General Hospital, Beijing 100853, China
| | - Hongying Shi
- Department of Preventive Medicine, Public Health and Management of Wenzhou Medical University, Wenzhou, 325035, China
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12
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Hui RWH, Liu AQ. Making the world a better place: an interview with Dr Emily Chi-wan Hung. Hong Kong Med J 2021; 27:232-233. [PMID: 34168094 DOI: 10.12809/hkmj-hc202106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- R W H Hui
- Department of Medicine, The University of Hong Kong, Hong Kong
| | - A Q Liu
- Department of Surgery, Prince of Wales Hospital, Hong Kong
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13
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Zhou ZH, Wu YF, Yan Y, Liu AQ, Yu QY, Peng ZX, Wang GQ, Hong MF. Persistence with medical treatment for Wilson disease in China based on a single center's survey research. Brain Behav 2021; 11:e02168. [PMID: 33949793 PMCID: PMC8213922 DOI: 10.1002/brb3.2168] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/08/2021] [Accepted: 04/17/2021] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Wilson's disease (WD) is one of the few hereditary diseases that can be successfully treated with medicines. We conduct this survey research to assess treatment persistence among patients with WD and try to identify what factors affect the treatment persistence. METHODS We employed WeChat which is the most popular social software in China to carry out this anonymous questionnaire research. The questionnaire included medication adherence scale. We also collected available medical records related to demographic and clinical characteristics. All the patients were divided into group of persistence with drug treatment (PDT) and nonpersistence with drug treatment (n-PDT). RESULTS We collected 242 qualified questionnaires. Only 66.5% of patients were PDT during the mean 12.6 years of follow-up. In PDT group, better outcomes were observed: improvement (78.3%) and no change (16.1%) versus those in n-PDT (55.6%; and 28.4%, respectively). In PDT group, only nine patients deteriorated (6.8%) in comparison with 13 patients in n-PDT (16.0%). The adverse events (AEs) in PDT group were significantly less than those in n-PDT group. There were no significant differences in clinical type, gender, age, education level, and family knowledge about WD between the two groups. There were significant differences in AEs and family position toward treatment. CONCLUSION Medication Adherence of Chinese WD patients was low. One third of the patients (33.5%) were unable to PDT, and it had an important negative effect on clinical outcome. AEs and family support had an important impact on treatment persistence.
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Affiliation(s)
- Zhi-Hua Zhou
- Department of Neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, China
| | - Yun-Fan Wu
- The Second School of Clinical Medicine, Southern Medical University, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Yan Yan
- Wilson Disease Centre, Hospital Affiliated to Institute of Neurology, Anhui University of Chinese Traditional Medicine, Hefei, China
| | - Ai-Qun Liu
- Department of Neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, China
| | - Qing-Yun Yu
- Department of Neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, China
| | - Zhong-Xing Peng
- Department of Neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, China
| | - Gong-Qiang Wang
- Wilson Disease Centre, Hospital Affiliated to Institute of Neurology, Anhui University of Chinese Traditional Medicine, Hefei, China
| | - Ming-Fan Hong
- Department of Neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, China
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14
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Choi JH, Chin LK, Woo BM, Song Y, Seol MJ, Hong Y, Liu AQ, Jang S, Ploegh H, Im H, Lee D. Hydrogel-Based Stamping Technology for Solution-Free Blood Cell Staining. ACS Appl Mater Interfaces 2021; 13:22124-22130. [PMID: 33870697 DOI: 10.1021/acsami.0c22521] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An accurate microscopical analysis of blood smears requires a reproducible and convenient method of staining. Solution-based staining procedures can be cumbersome. Especially in low- and middle-income countries, the lack of skilled technicians and adequate laboratory facilities, as well as insufficient water and reagent quality, often become confounding factors. To overcome these obstacles, we developed a new cell staining method based on sequential stamping of agarose gel patches that contain eosin, methylene blue/oxidized methylene blue, Azure B, and buffer, respectively. Our method, termed "hydrogel staining", provides a simple, reproducible, solution-free, and inexpensive approach to stain blood cells. We have optimized incubation times to achieve the optimal transfer of dyes to fixed blood cells on a glass slide, with outcomes comparable to conventional solution-based methods for white blood cells and malaria-infected red blood cells. This hydrogel staining method does not require special skills to produce excellent quality stained blood film slides. The new method could enhance the accuracy of microscopical examination of blood smears, especially in resource-limited settings.
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Affiliation(s)
- Jae-Hyeok Choi
- Noul Co. Limited, B-10F, 338, Gwanggyojungang-ro, Suji-gu, Yongin-si, Gyeonggi-do 16942, Republic of Korea
| | - Lip Ket Chin
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, Boston, Massachusetts 02114, United States
| | - Bo Mee Woo
- Noul Co. Limited, B-10F, 338, Gwanggyojungang-ro, Suji-gu, Yongin-si, Gyeonggi-do 16942, Republic of Korea
| | - Younghoon Song
- Noul Co. Limited, B-10F, 338, Gwanggyojungang-ro, Suji-gu, Yongin-si, Gyeonggi-do 16942, Republic of Korea
| | - Min Jeong Seol
- Noul Co. Limited, B-10F, 338, Gwanggyojungang-ro, Suji-gu, Yongin-si, Gyeonggi-do 16942, Republic of Korea
| | - Yoontaik Hong
- Noul Co. Limited, B-10F, 338, Gwanggyojungang-ro, Suji-gu, Yongin-si, Gyeonggi-do 16942, Republic of Korea
| | - Ai-Qun Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Seongsoo Jang
- College of Medicine, University of Ulsan, 88 Olympic-ro 43-Gil, Songpa-gu, Seoul 05505, Republic of Korea
- Asan Medical Center, 88, Olympic-ro 43-Gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Hidde Ploegh
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, 300 Longwood Avenue, Boston, Massachusetts 02115, United States
| | - Hyungsoon Im
- Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street, Boston, Massachusetts 02114, United States
- Department of Radiology, Massachusetts General Hospital, 55 Fruit Street, Boston, Massachusetts 02114, United States
| | - Dongyoung Lee
- Noul Co. Limited, B-10F, 338, Gwanggyojungang-ro, Suji-gu, Yongin-si, Gyeonggi-do 16942, Republic of Korea
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15
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Elsayed AA, Erfan M, Sabry YM, Dris R, Gaspéri J, Barbier JS, Marty F, Bouanis F, Luo S, Nguyen BTT, Liu AQ, Tassin B, Bourouina T. A microfluidic chip enables fast analysis of water microplastics by optical spectroscopy. Sci Rep 2021; 11:10533. [PMID: 34006979 PMCID: PMC8131687 DOI: 10.1038/s41598-021-89960-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 04/26/2021] [Indexed: 02/07/2023] Open
Abstract
Microplastics contaminating drinking water is a growing issue that has been the focus of a few recent studies, where a major bottleneck is the time-consuming analysis. In this work, a micro-optofluidic platform is proposed for fast quantification of microplastic particles, the identification of their chemical nature and size, especially in the 1-100 µm size range. Micro-reservoirs ahead of micro-filters are designed to accumulate all trapped solid particles in an ultra-compact area, which enables fast imaging and optical spectroscopy to determine the plastic nature and type. Furthermore, passive size sorting is implemented for splitting the particles according to their size range in different reservoirs. Besides, flow cytometry is used as a reference method for retrieving the size distribution of samples, where chemical nature information is lost. The proof of concept of the micro-optofluidic platform is validated using model samples where standard plastic particles of different size and chemical nature are mixed.
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Affiliation(s)
- Ahmed A Elsayed
- ESYCOM, CNRS UMR 9007, Univ. Gustave Eiffel, ESIEE Paris, 93162, Noisy-le-Grand, France
| | - Mazen Erfan
- ESYCOM, CNRS UMR 9007, Univ. Gustave Eiffel, ESIEE Paris, 93162, Noisy-le-Grand, France
- ECE Department, Faculty of Engineering, Ain Shams University, 1 El-Sarayat St, Cairo, 11517, Egypt
| | - Yasser M Sabry
- ESYCOM, CNRS UMR 9007, Univ. Gustave Eiffel, ESIEE Paris, 93162, Noisy-le-Grand, France
- ECE Department, Faculty of Engineering, Ain Shams University, 1 El-Sarayat St, Cairo, 11517, Egypt
| | - Rachid Dris
- LEESU, ENPC UPEC, 77455, Marne-la-Vallee cedex, France
| | - Johnny Gaspéri
- LEESU, ENPC UPEC, 77455, Marne-la-Vallee cedex, France
- GERS-LEE Université Gustave Eiffel, IFSTTAR, 44344, Bouguenais, France
| | | | - Frédéric Marty
- ESYCOM, CNRS UMR 9007, Univ. Gustave Eiffel, ESIEE Paris, 93162, Noisy-le-Grand, France
| | - Fatima Bouanis
- COSYS-LISIS, Univ Gustave Eiffel, IFSTTAR, 77454, Marne-la-Vallée, France
- Laboratory of Physics of Interfaces and Thin Films, UMR 7647 CNRS/ Ecole Polytechnique, 91128, IPParis, Palaiseau, France
| | - Shaobo Luo
- ESYCOM, CNRS UMR 9007, Univ. Gustave Eiffel, ESIEE Paris, 93162, Noisy-le-Grand, France
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Binh T T Nguyen
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Ai-Qun Liu
- ESYCOM, CNRS UMR 9007, Univ. Gustave Eiffel, ESIEE Paris, 93162, Noisy-le-Grand, France
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Bruno Tassin
- LEESU, ENPC UPEC, 77455, Marne-la-Vallee cedex, France.
| | - Tarik Bourouina
- ESYCOM, CNRS UMR 9007, Univ. Gustave Eiffel, ESIEE Paris, 93162, Noisy-le-Grand, France.
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16
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Luo S, Shi Y, Chin LK, Zhang Y, Wen B, Sun Y, Nguyen BTT, Chierchia G, Talbot H, Bourouina T, Jiang X, Liu AQ. Rare bioparticle detection via deep metric learning. RSC Adv 2021; 11:17603-17610. [PMID: 35480202 PMCID: PMC9032704 DOI: 10.1039/d1ra02869c] [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] [Received: 04/13/2021] [Accepted: 05/07/2021] [Indexed: 11/21/2022] Open
Abstract
Recent deep neural networks have shown superb performance in analyzing bioimages for disease diagnosis and bioparticle classification. Conventional deep neural networks use simple classifiers such as SoftMax to obtain highly accurate results. However, they have limitations in many practical applications that require both low false alarm rate and high recovery rate, e.g., rare bioparticle detection, in which the representative image data is hard to collect, the training data is imbalanced, and the input images in inference time could be different from the training images. Deep metric learning offers a better generatability by using distance information to model the similarity of the images and learning function maps from image pixels to a latent space, playing a vital role in rare object detection. In this paper, we propose a robust model based on a deep metric neural network for rare bioparticle (Cryptosporidium or Giardia) detection in drinking water. Experimental results showed that the deep metric neural network achieved a high accuracy of 99.86% in classification, 98.89% in precision rate, 99.16% in recall rate and zero false alarm rate. The reported model empowers imaging flow cytometry with capabilities of biomedical diagnosis, environmental monitoring, and other biosensing applications.
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Affiliation(s)
- Shaobo Luo
- ESYCOM, CNRS UMR 9007, Universite Gustave Eiffel, ESIEE Paris Noisy-le-Grand 93162 France .,Institute for Infocomm Research (I2R), Agency for Science, Technology and Research (ASTAR) 138668 Singapore
| | - Yuzhi Shi
- School of Electrical & Electronic Engineering, Nanyang Technological University 639798 Singapore
| | - Lip Ket Chin
- School of Electrical & Electronic Engineering, Nanyang Technological University 639798 Singapore .,Center for Systems Biology, Massachusetts General Hospital Massachusetts 02114 USA
| | - Yi Zhang
- School of Mechanical & Aerospace Engineering, Nanyang Technological University 639798 Singapore
| | - Bihan Wen
- School of Electrical & Electronic Engineering, Nanyang Technological University 639798 Singapore
| | - Ying Sun
- Institute for Infocomm Research (I2R), Agency for Science, Technology and Research (ASTAR) 138668 Singapore
| | - Binh T T Nguyen
- School of Electrical & Electronic Engineering, Nanyang Technological University 639798 Singapore
| | - Giovanni Chierchia
- ESYCOM, CNRS UMR 9007, Universite Gustave Eiffel, ESIEE Paris Noisy-le-Grand 93162 France
| | - Hugues Talbot
- CentraleSupelec, Universite Paris-Saclay Saint-Aubin 91190 France
| | - Tarik Bourouina
- ESYCOM, CNRS UMR 9007, Universite Gustave Eiffel, ESIEE Paris Noisy-le-Grand 93162 France
| | - Xudong Jiang
- School of Electrical & Electronic Engineering, Nanyang Technological University 639798 Singapore
| | - Ai-Qun Liu
- School of Electrical & Electronic Engineering, Nanyang Technological University 639798 Singapore .,Nanyang Environment and Water Research Institute, Nanyang Technological University 637141 Singapore
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17
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Zhang H, Gu M, Jiang XD, Thompson J, Cai H, Paesani S, Santagati R, Laing A, Zhang Y, Yung MH, Shi YZ, Muhammad FK, Lo GQ, Luo XS, Dong B, Kwong DL, Kwek LC, Liu AQ. An optical neural chip for implementing complex-valued neural network. Nat Commun 2021; 12:457. [PMID: 33469031 PMCID: PMC7815828 DOI: 10.1038/s41467-020-20719-7] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [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: 04/13/2020] [Accepted: 12/14/2020] [Indexed: 01/29/2023] Open
Abstract
Complex-valued neural networks have many advantages over their real-valued counterparts. Conventional digital electronic computing platforms are incapable of executing truly complex-valued representations and operations. In contrast, optical computing platforms that encode information in both phase and magnitude can execute complex arithmetic by optical interference, offering significantly enhanced computational speed and energy efficiency. However, to date, most demonstrations of optical neural networks still only utilize conventional real-valued frameworks that are designed for digital computers, forfeiting many of the advantages of optical computing such as efficient complex-valued operations. In this article, we highlight an optical neural chip (ONC) that implements truly complex-valued neural networks. We benchmark the performance of our complex-valued ONC in four settings: simple Boolean tasks, species classification of an Iris dataset, classifying nonlinear datasets (Circle and Spiral), and handwriting recognition. Strong learning capabilities (i.e., high accuracy, fast convergence and the capability to construct nonlinear decision boundaries) are achieved by our complex-valued ONC compared to its real-valued counterpart.
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Affiliation(s)
- H Zhang
- Quantum Science and Engineering Centre (QSec), Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore, Singapore
| | - M Gu
- Complexity Institute and School of Physical and Mathematical Sciences, Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore, Singapore.
- Centre for Quantum Technologies, National University of Singapore, Block S15, 3 Science Drive 2, Singapore, 117543, Singapore.
| | - X D Jiang
- Quantum Science and Engineering Centre (QSec), Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore, Singapore.
| | - J Thompson
- Centre for Quantum Technologies, National University of Singapore, Block S15, 3 Science Drive 2, Singapore, 117543, Singapore
| | - H Cai
- Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 138634, Singapore, Singapore
| | - S Paesani
- Centre for Quantum Photonics, H. H. Wills Physics Laboratory and Department of Electrical and Electronic Engineering, University of Bristol, Merchant Venturers Building, Woodland Road, Bristol, BS8 1UB, UK
| | - R Santagati
- Centre for Quantum Photonics, H. H. Wills Physics Laboratory and Department of Electrical and Electronic Engineering, University of Bristol, Merchant Venturers Building, Woodland Road, Bristol, BS8 1UB, UK
| | - A Laing
- Centre for Quantum Photonics, H. H. Wills Physics Laboratory and Department of Electrical and Electronic Engineering, University of Bristol, Merchant Venturers Building, Woodland Road, Bristol, BS8 1UB, UK
| | - Y Zhang
- Quantum Science and Engineering Centre (QSec), Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore, Singapore
- School of Mechanical & Aerospace Engineering, Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore, Singapore
| | - M H Yung
- Institute for Quantum Science and Engineering, Department of Physics, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Key Laboratory of Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Y Z Shi
- Quantum Science and Engineering Centre (QSec), Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore, Singapore
| | - F K Muhammad
- Quantum Science and Engineering Centre (QSec), Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore, Singapore
| | - G Q Lo
- Advanced Micro Foundry, 11 Science Park Road, 117685, Singapore, Singapore
| | - X S Luo
- Advanced Micro Foundry, 11 Science Park Road, 117685, Singapore, Singapore
| | - B Dong
- Advanced Micro Foundry, 11 Science Park Road, 117685, Singapore, Singapore
| | - D L Kwong
- Institute of Microelectronics, A*STAR (Agency for Science, Technology and Research), 138634, Singapore, Singapore
| | - L C Kwek
- Quantum Science and Engineering Centre (QSec), Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore, Singapore.
- Centre for Quantum Technologies, National University of Singapore, Block S15, 3 Science Drive 2, Singapore, 117543, Singapore.
- National Institute of Education, 1 Nanyang Walk, 637616, Singapore, Singapore.
| | - A Q Liu
- Quantum Science and Engineering Centre (QSec), Nanyang Technological University, 50 Nanyang Ave, 639798, Singapore, Singapore.
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Chin LK, Son T, Hong JS, Liu AQ, Skog J, Castro CM, Weissleder R, Lee H, Im H. Plasmonic Sensors for Extracellular Vesicle Analysis: From Scientific Development to Translational Research. ACS Nano 2020; 14:14528-14548. [PMID: 33119256 PMCID: PMC8423498 DOI: 10.1021/acsnano.0c07581] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Extracellular vesicles (EVs), actively shed from a variety of neoplastic and host cells, are abundant in blood and carry molecular markers from parental cells. For these reasons, EVs have gained much interest as biomarkers of disease. Among a number of different analytical methods that have been developed, surface plasmon resonance (SPR) stands out as one of the ideal techniques given its sensitivity, robustness, and ability to miniaturize. In this Review, we compare different SPR platforms for EV analysis, including conventional SPR, nanoplasmonic sensors, surface-enhanced Raman spectroscopy, and plasmonic-enhanced fluorescence. We discuss different surface chemistries used to capture targeted EVs and molecularly profile their proteins and RNAs. We also highlight these plasmonic platforms' clinical applications, including cancers, neurodegenerative diseases, and cardiovascular diseases. Finally, we discuss the future perspective of plasmonic sensing for EVs and their potentials for commercialization and clinical translation.
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Affiliation(s)
- Lip Ket Chin
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Taehwang Son
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Jae-Sang Hong
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Ai-Qun Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Johan Skog
- Exosome Diagnostics, a Bio-techne brand, Waltham, MA 02451, USA
| | - Cesar M. Castro
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
| | - Hakho Lee
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
- Corresponding authors: Hyungsoon Im, Hakho Lee, Center for Systems Biology, Massachusetts General Hospital, 149 13th St. Rm. 6.229, Boston, MA, 02114, USA, 1-617-643-5679, ;
| | - Hyungsoon Im
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
- Corresponding authors: Hyungsoon Im, Hakho Lee, Center for Systems Biology, Massachusetts General Hospital, 149 13th St. Rm. 6.229, Boston, MA, 02114, USA, 1-617-643-5679, ;
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19
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Min J, Chin LK, Oh J, Landeros C, Vinegoni C, Lee J, Lee SJ, Park JY, Liu AQ, Castro CM, Lee H, Im H, Weissleder R. CytoPAN-Portable cellular analyses for rapid point-of-care cancer diagnosis. Sci Transl Med 2020; 12:eaaz9746. [PMID: 32759277 PMCID: PMC8217912 DOI: 10.1126/scitranslmed.aaz9746] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 03/06/2020] [Accepted: 06/19/2020] [Indexed: 12/18/2022]
Abstract
Rapid, automated, point-of-care cellular diagnosis of cancer remains difficult in remote settings due to lack of specialists and medical infrastructure. To address the need for same-day diagnosis, we developed an automated image cytometry system (CytoPAN) that allows rapid breast cancer diagnosis of scant cellular specimens obtained by fine needle aspiration (FNA) of palpable mass lesions. The system is devoid of moving parts for stable operations, harnesses optimized antibody kits for multiplexed analysis, and offers a user-friendly interface with automated analysis for rapid diagnoses. Through extensive optimization and validation using cell lines and mouse models, we established breast cancer diagnosis and receptor subtyping in 1 hour using as few as 50 harvested cells. In a prospective patient cohort study (n = 68), we showed that the diagnostic accuracy was 100% for cancer detection and the receptor subtyping accuracy was 96% for human epidermal growth factor receptor 2 and 93% for hormonal receptors (ER/PR), two key biomarkers associated with breast cancer. A combination of FNA and CytoPAN offers faster, less invasive cancer diagnoses than the current standard (core biopsy and histopathology). This approach should enable the ability to more rapidly diagnose breast cancer in global and remote settings.
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Affiliation(s)
- Jouha Min
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Lip Ket Chin
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Juhyun Oh
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Christian Landeros
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Harvard-MIT Program in Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Claudio Vinegoni
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Jeeyeon Lee
- Department of Surgery, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu 41404, Republic of Korea
| | - Soo Jung Lee
- Department of Oncology/Hematology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu 41404, Republic of Korea
| | - Jee Young Park
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu 41404, Republic of Korea
| | - Ai-Qun Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Cesar M Castro
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA
- Cancer Center, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Hakho Lee
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA.
- Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Hyungsoon Im
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA.
- Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Ralph Weissleder
- Center for Systems Biology, Massachusetts General Hospital, Boston, MA 02114, USA.
- Department of Radiology, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Systems Biology, Harvard Medical School, Boston, MA 02115, USA
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20
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Zhou ZH, Wu YF, Wu WF, Liu AQ, Yu QY, Peng ZX, Hong MF. Giant "heart appearance-like sign" on MRI in bilateral ponto-medullary junction infraction: case report. BMC Neurol 2020; 20:107. [PMID: 32293317 PMCID: PMC7092499 DOI: 10.1186/s12883-020-01683-7] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 03/11/2020] [Indexed: 11/15/2022] Open
Abstract
Background Bilateral medial medullary infarction (MMI) is uncommon and bilateral medial pons infarction (MPI) is even rarer. “Heart appearance” on magnetic resonance imaging (MRI) is a characteristic presentation of bilateral medial medullary infarction (MMI). Case presentation We present 67-year-old Chinese diabetic and hypertensive female patient affected with “heart appearance-like” infarction in bilateral ponto-medullary junction on MRI. Abnormal signal was observed in the bilateral ponto-medullary junction on T1, T2, fluid-attenuated inversion recovery and apparent diffusion coefficient (ADC). The whole brain digital subtraction angiography (DSA) showed the basilar artery and vertebral artery remained intact. Therefore, we speculated that the bilateral ponto-medullary junction infarction might be caused by the deep perforating branch of the basilar artery. Conclusions As far as we know, the “heart appearance-like” infraction in bilateral ponto-medullary junction was not reported. Our case also suggests that bilateral ischemic infraction involvement of the medulla and pon is possible even in the context of an intact basilar artery.
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Affiliation(s)
- Zhi-Hua Zhou
- Department of neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, China.
| | - Yun-Fan Wu
- Department of Medical Imaging, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Wei-Feng Wu
- Department of neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Ai-Qun Liu
- Department of neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Qing-Yun Yu
- Department of neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Zhong-Xing Peng
- Department of neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
| | - Ming-Fan Hong
- Department of neurology, The first affiliated hospital, School of Clinical Medicine of Guangdong Pharmaceutical University, Guangzhou, Guangdong, China
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21
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Chao JS, Zhao SL, Ou-yang SW, Qian YB, Liu AQ, Tang HM, Zhong L, Peng ZH, Xu JM, Sun HC. Post-transplant infection improves outcome of hepatocellular carcinoma patients after orthotopic liver transplantation. World J Gastroenterol 2019; 25:5630-5640. [PMID: 31602163 PMCID: PMC6785522 DOI: 10.3748/wjg.v25.i37.5630] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/22/2019] [Accepted: 09/09/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Tumor recurrence after orthotopic liver transplantation (OLT) remains a serious threat for long-term survival of the recipients with hepatocellular carcinoma (HCC), since very few factors or measures have shown impact on overcoming HCC recurrence after OLT. Postoperative infection suppresses tumor recurrence and improves patient survival in lung cancer and malignant glioma probably via stimulating the immune system. Post-transplant infection (PTI), a common complication, is deemed to be harmful for the liver transplant recipients from a short-term perspective. Nevertheless, whether PTI inhibits HCC recurrence after OLT and prolongs the long-term survival of HCC patients needs to be clarified.
AIM To investigate the potential influence of PTI on the survival and tumor recurrence of patients with HCC after OLT.
METHODS A total of 238 patients with HCC who underwent OLT between August 2002 and July 2016 at our center were retrospectively included and accordingly subdivided into a PTI group (53 patients) and a non-PTI group (185 patients). Univariate analyses, including the differences of overall survival (OS), recurrence-free survival (RFS), and post-recurrence survival (PRS), between the PTI and non-PTI subgroups as well as survival curve analysis were performed by the Kaplan-Meier method, and the differences were compared using the log rank test. The variables with a P-value < 0.1 in univariate analyses were included in the multivariate survival analysis by using a Cox proportional-hazards model.
RESULTS The 1-, 3-, and 5-year OS and RFS rates of the whole cohort were 86.6%, 69.0%, and 63.6%, and 75.7%, 60.0%, and 57.3%, respectively. The 1-, 3-, and 5-year OS rates for the PTI patient group (96.0%, 89.3%, and 74.0%) were significantly higher than those for the non-PTI group (84.0%, 63.4%, and 60.2%) (P = 0.033). The absence of PTI was an independent risk factor for dismal OS (relative risk [RR] = 2.584, 95%CI: 1.226-5.449) and unfavorable RFS (RR = 2.683, 95%CI: 1.335-5.390). Subgroup analyses revealed that PTI remarkably improved OS (P = 0.003) and RFS (P = 0.003) rates of HCC patients with vascular invasion (IV), but did not impact on OS (P = 0.404) and RFS (P = 0.304) of patients without VI. Among the patients who suffered post-transplant tumor recurrence, patients with PTI showed significantly better OS (P = 0.026) and PRS (P = 0.042) rates than those without PTI.
CONCLUSION PTI improves OS and RFS of the transplant HCC patients at a high risk for post-transplant death and tumor recurrence, which is attributed to suppressive effect of PTI on HCC recurrence.
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Affiliation(s)
- Jia-Shuo Chao
- Department of General Surgery, Shanghai Organ Transplantat Medical Center, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200080, China
| | - Sen-Lin Zhao
- Department of Colorectal Surgery, Fudan University, Shanghai Cancer Center, Shanghai 200032, China
| | - Si-Wen Ou-yang
- Department of General Surgery, Shanghai Organ Transplantat Medical Center, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200080, China
| | - Yong-Bing Qian
- Division of Critical Care, Department of Liver Surgery, Renji Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200127, China
| | - Ai-Qun Liu
- Department of Radiology, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200080, China
| | - Hua-Mei Tang
- Department of Pathology, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200080, China
| | - Lin Zhong
- Department of General Surgery, Shanghai Organ Transplantat Medical Center, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200080, China
| | - Zhi-Hai Peng
- Department of General Surgery, Shanghai Organ Transplantat Medical Center, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200080, China
| | - Jun-Ming Xu
- Department of General Surgery, Shanghai Organ Transplantat Medical Center, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200080, China
| | - Hong-Cheng Sun
- Department of General Surgery, Shanghai Organ Transplantat Medical Center, Shanghai General Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200080, China
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22
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Liu AQ, Chen W. [Advances in esophageal microbiota and esophageal related diseases]. Zhonghua Zhong Liu Za Zhi 2019; 41:561-564. [PMID: 31434444 DOI: 10.3760/cma.j.issn.0253-3766.2019.08.001] [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
Esophagus, as the pipe connecting oral cavity and stomach, has unique anatomical structure and physiological functions. The related diseases including esophageal cancer and precancerous lesions are the ones of major public health problems in China. The pathogenesis of esophageal diseases is still not clear. The exploration of correlation between the changes of esophageal microbiota and esophageal diseases becomes a new breakthrough in the study of etiology. Previous studies have found enrichment of gram-positive bacteria in the normal esophagus, while a decrease in diversity of bacteria and a dominant gram-negative anaerobe in diseased esophagus. Although much progress has been made in the study of esophageal microbiota, the standard method of how to accurately and noninvasively collect esophageal microbiota is still lack, which is an important part of the esophageal microbial research.
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Affiliation(s)
- A Q Liu
- Department of Cancer Epidemiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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23
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Hsieh CM, Liu PY, Chin LK, Zhang JB, Wang K, Sung KB, Ser W, Bourouina T, Leprince-Wang Y, Liu AQ. Regulation of lipid droplets in live preadipocytes using optical diffraction tomography and Raman spectroscopy. Opt Express 2019; 27:22994-23008. [PMID: 31510584 DOI: 10.1364/oe.27.022994] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 05/24/2019] [Indexed: 06/10/2023]
Abstract
Lipid droplets have gained strong interest in recent years to comprehend how they function and coordinate with other parts of the cell. However, it remains challenging to study the regulation of lipid droplets in live preadipocytes using conventional microscopic techniques. In this paper, we study the effects of fatty acid stimulation and cell starvation on lipid droplets using optical diffraction tomography and Raman spectroscopy by measuring size, refractive index, volume, dry mass and degree of unsaturation. The increase of fatty acids causes an increase in the number and dry mass of lipid droplets. During starvation, the number of lipid droplets increases drastically, which are released to mitochondria to release energy. Studying lipid droplets under different chemical stimulations could help us understand the regulation of lipid droplets for metabolic disorders, such as obesity and diabetes.
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24
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Shi YZ, Xiong S, Zhang Y, Chin LK, Chen YY, Zhang JB, Zhang TH, Ser W, Larsson A, Lim SH, Wu JH, Chen TN, Yang ZC, Hao YL, Liedberg B, Yap PH, Wang K, Tsai DP, Qiu CW, Liu AQ. Author Correction: Sculpting nanoparticle dynamics for single-bacteria-level screening and direct binding-efficiency measurement. Nat Commun 2019; 10:1227. [PMID: 30862795 PMCID: PMC6414671 DOI: 10.1038/s41467-019-09171-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Y Z Shi
- School of Mechanical Engineering, Xi'an Jiaotong University, 710049, Xi'an, China.,School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - S Xiong
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
| | - Y Zhang
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - L K Chin
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Y-Y Chen
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - J B Zhang
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - T H Zhang
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583, Singapore
| | - W Ser
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - A Larsson
- School of Biological Sciences, Nanyang Technological University, Singapore, 639798, Singapore
| | - S H Lim
- School of Biological Sciences, Nanyang Technological University, Singapore, 639798, Singapore
| | - J H Wu
- School of Mechanical Engineering, Xi'an Jiaotong University, 710049, Xi'an, China
| | - T N Chen
- School of Mechanical Engineering, Xi'an Jiaotong University, 710049, Xi'an, China
| | - Z C Yang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, 100871, Beijing, China
| | - Y L Hao
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, 100871, Beijing, China
| | - B Liedberg
- Centre for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - P H Yap
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 308232, Singapore
| | - K Wang
- College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan.,Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore, 637141, Singapore
| | - D P Tsai
- Department of Physics, National Taiwan University, Taipei, 10617, Taiwan
| | - C-W Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583, Singapore. .,SZU-NUS Collaborative Innovation Center for Optoelectronic Science and Technology, Shenzhen University, 518060, Shenzhen, China.
| | - A Q Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore. .,National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, 100871, Beijing, China.
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25
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Ge J, Li YJ, Liu AQ, Huang WY, Yang F, Ma L, Zhai HH. [Changes of intestinal mucosal barrier in mice with chronic ulcerative colitis]. Zhonghua Yi Xue Za Zhi 2018; 98:3950-3953. [PMID: 30669801 DOI: 10.3760/cma.j.issn.0376-2491.2018.48.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the damage and mechanism of intestinal mucosal barrier function in mice with ulcerative colitis induced by Dextran sulphate sodium (DSS). Methods: Mice models of chronic ulcerative colitis induced by DSS were established. The mice were completely randomized into normal control group and DSS group, 25 mice in each group. The body weight and colon length of the mice were monitored. The pathological examination of colon tissue was confirmed the success of the model and assessed the integrity of the colonic mucosal barrier; Evan's Blue's intestinal permeability analysis assessed the function of colon mucosal barrier; immunofluorescence staining and Western blot were used to evaluate the expression of intestinal mucosal barrier integrity-related proteins. Results: Compared with the normal control group, the DSS group had lower body weight [(25.6±0.7)g vs (23.5±0.7)g, t=2.14, P<0.05], and the colon length was shorter [(7.3±0.4)cm vs (5.6±0.2)cm, t=3.975, P<0.001]; colonic pathological results showed that the intestinal mucosa became thinner and part of the intestinal mucosa was defective; Evan's Blue instilled into the intestinal lumen was more abundant into the intestinal mucosa, and the optical density at 620 nm (OD(620))/colon tissue weight (g) was higher [(0.11±0.01) vs (0.15±0.01), t=4.174, P<0.05]; immunofluorescence and Western blot results showed lower expression of ZO-1, Claudin-1, and F-actin in colonic mucosa. Conclusion: The structure and function of intestinal mucosal barrier in DSS-induced chronic ulcerative colitis mice is impaired.
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Affiliation(s)
- J Ge
- Clinical Medicine College, Ningxia Medical University, Yinchuan 750004, China
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26
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Xu WC, Qian G, Liu AQ, Li YQ, Zou HQ. Urinary Extracellular Vesicle: A Potential Source of Early Diagnostic and Therapeutic Biomarker in Diabetic Kidney Disease. Chin Med J (Engl) 2018; 131:1357-1364. [PMID: 29786051 PMCID: PMC5987509 DOI: 10.4103/0366-6999.232801] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE Diabetic kidney disease (DKD) has become one of the major causes of end-stage renal disease. Urinary extracellular vesicles (uEVs) contain rich biological information which could be the ideal source for noninvasive biomarkers of DKD. This review discussed the potential early diagnostic and therapeutic values of proteins and microRNAs in uEVs in DKD. DATA SOURCES This review was based articles published in PubMed, Embase, Cochrane, and Google Scholar databases up to November 20, 2017, with the following keywords: "Diabetic kidney disease", "Extracellular vesicle", and "Urine". STUDY SELECTION Relevant articles were carefully reviewed, with no exclusions applied to the study design and publication type. RESULTS There is no "gold standard" technology to separate and/or purify uEVs. The uEVs contain a variety of proteins and RNAs and participate in the physiological and pathological processes of the kidney. UEVs, especially urinary exosomes, may be useful biomarkers for early diagnosis and treatment to DKD. Furthermore, the uEVs has been used as a therapeutic target for DKD. CONCLUSION Proteins and nucleic acids in uEVs represent promising biomarker for the diagnosis and treatment of DKD.
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Affiliation(s)
- Wei-Cheng Xu
- Department of Nephrology, Institute of Nephrology and Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, China
| | - Ge Qian
- Department of Nephrology, Institute of Nephrology and Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, China
| | - Ai-Qun Liu
- Department of Nephrology, Institute of Nephrology and Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, China
| | - Yong-Qiang Li
- Department of Nephrology, Institute of Nephrology and Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, China
| | - He-Qun Zou
- Department of Nephrology, Institute of Nephrology and Urology, The Third Affiliated Hospital of Southern Medical University, Guangzhou, Guangdong 510630, China
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27
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Liu AQ, Xie Z, Chen XN, Feng J, Chen JW, Qin FJ, Ge LY. Fas-associated factor 1 inhibits tumor growth by suppressing Helicobacter pylori-induced activation of NF-κB signaling in human gastric carcinoma. Oncotarget 2018; 8:7999-8009. [PMID: 28030825 PMCID: PMC5352377 DOI: 10.18632/oncotarget.14033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 11/08/2016] [Indexed: 12/15/2022] Open
Abstract
Loss of Fas-associated factor 1 (FAF1) may act as a pro-survival signal in diseased cells, but whether this is true in gastric carcinoma remains unclear. Here we report that FAF1 was expressed at low levels in gastric carcinoma tissues and cell lines, and its expression correlated with larger tumors, higher histology grade, higher TNM stage, tumor infiltration, and lymph node metastasis. Univariate analysis and survival curve analysis identified low FAF1 expression as a predictor of poor prognosis. FAF1 overexpression in HGC-27 gastric cancer cells induced cell apoptosis and inhibited cell proliferation and growth. It also reduced colony formation in vitro and tumor growth in mice. We found that Helicobacter pylori, a risk factor for gastric cancer, down-regulated FAF1 expression via NF-κB signaling. Knock-down of IKKβ or p65 expression in gastric cancer cells reversed H. pylori-induced down-regulation of FAF1 expression and partially blocked H. pylori-induced secretion of inflammatory cytokines TNF-α and IL-8. Our results suggest that loss of FAF1 contributes to human gastric carcinogenesis by allowing H. pylori to activate NF-κB signaling.
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Affiliation(s)
- Ai-Qun Liu
- Department of Endoscopy, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning 530021, Guangxi, P.R. China
| | - Zhongqiu Xie
- Department of Pathology, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Xiao-Ni Chen
- Department of Endoscopy, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning 530021, Guangxi, P.R. China
| | - Jie Feng
- Department of Endoscopy, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning 530021, Guangxi, P.R. China
| | - Jia-Wei Chen
- Department of Endoscopy, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning 530021, Guangxi, P.R. China
| | - Fu-Jun Qin
- Department of Pathology, School of Medicine, University of Virginia, Charlottesville, VA 22908, USA
| | - Lian-Ying Ge
- Department of Endoscopy, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning 530021, Guangxi, P.R. China
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28
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Wu PC, Liao CY, Savinov V, Chung TL, Chen WT, Huang YW, Wu PR, Chen YH, Liu AQ, Zheludev NI, Tsai DP. Optical Anapole Metamaterial. ACS Nano 2018; 12:1920-1927. [PMID: 29376312 DOI: 10.1021/acsnano.7b08828] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The toroidal dipole is a localized electromagnetic excitation independent from the familiar magnetic and electric dipoles. It corresponds to currents flowing along minor loops of a torus. Interference of radiating induced toroidal and electric dipoles leads to anapole, a nonradiating charge-current configuration. Interactions of induced toroidal dipoles with electromagnetic waves have recently been observed in artificial media at microwave, terahertz, and optical frequencies. Here, we demonstrate a quasi-planar plasmonic metamaterial, a combination of dumbbell aperture and vertical split-ring resonator, that exhibits transverse toroidal moment and resonant anapole behavior in the optical part of the spectrum upon excitation with a normally incident electromagnetic wave. Our results prove experimentally that toroidal modes and anapole modes can provide distinct and physically significant contributions to the absorption and dispersion of slabs of matter in the optical part of the spectrum in conventional transmission and reflection experiments.
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Affiliation(s)
- Pin Chieh Wu
- Research Center for Applied Sciences, Academia Sinica , Taipei 11529, Taiwan
| | - Chun Yen Liao
- Department of Physics, National Taiwan University , Taipei 10617, Taiwan
| | - Vassili Savinov
- Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton , Southampton SO17 1BJ, U.K
| | - Tsung Lin Chung
- Department of Physics, National Taiwan University , Taipei 10617, Taiwan
| | - Wei Ting Chen
- Department of Physics, National Taiwan University , Taipei 10617, Taiwan
| | - Yao-Wei Huang
- Research Center for Applied Sciences, Academia Sinica , Taipei 11529, Taiwan
| | - Pei Ru Wu
- Department of Physics, National Taiwan University , Taipei 10617, Taiwan
| | - Yi-Hao Chen
- Department of Physics, National Taiwan University , Taipei 10617, Taiwan
| | - Ai-Qun Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University , Singapore 639798, Singapore
| | - Nikolay I Zheludev
- Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton , Southampton SO17 1BJ, U.K
- TPI and Centre for Disruptive Photonic Technologies, Nanyang Technological University , Singapore 637371, Singapore
| | - Din Ping Tsai
- Research Center for Applied Sciences, Academia Sinica , Taipei 11529, Taiwan
- Department of Physics, National Taiwan University , Taipei 10617, Taiwan
- College of Engineering, Chang Gung University , Taoyuan 33302, Taiwan
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29
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Shi YZ, Xiong S, Zhang Y, Chin LK, Chen YY, Zhang JB, Zhang TH, Ser W, Larrson A, Lim SH, Wu JH, Chen TN, Yang ZC, Hao YL, Liedberg B, Yap PH, Wang K, Tsai DP, Qiu CW, Liu AQ. Sculpting nanoparticle dynamics for single-bacteria-level screening and direct binding-efficiency measurement. Nat Commun 2018; 9:815. [PMID: 29483548 PMCID: PMC5827716 DOI: 10.1038/s41467-018-03156-5] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 01/24/2018] [Indexed: 01/21/2023] Open
Abstract
Particle trapping and binding in optical potential wells provide a versatile platform for various biomedical applications. However, implementation systems to study multi-particle contact interactions in an optical lattice remain rare. By configuring an optofluidic lattice, we demonstrate the precise control of particle interactions and functions such as controlling aggregation and multi-hopping. The mean residence time of a single particle is found considerably reduced from 7 s, as predicted by Kramer’s theory, to 0.6 s, owing to the mechanical interactions among aggregated particles. The optofluidic lattice also enables single-bacteria-level screening of biological binding agents such as antibodies through particle-enabled bacteria hopping. The binding efficiency of antibodies could be determined directly, selectively, quantitatively and efficiently. This work enriches the fundamental mechanisms of particle kinetics and offers new possibilities for probing and utilising unprecedented biomolecule interactions at single-bacteria level. Optical trapping is a versatile tool for biomedical applications. Here, the authors use an optofluidic lattice to achieve controllable multi-particle hopping and demonstrate single-bacteria-level screening and measurement of binding efficiency of biological binding agents through particle-enabled bacteria hopping.
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Affiliation(s)
- Y Z Shi
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China.,School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - S Xiong
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
| | - Y Zhang
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - L K Chin
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Y -Y Chen
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - J B Zhang
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - T H Zhang
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583, Singapore
| | - W Ser
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - A Larrson
- School of Biological Sciences, Nanyang Technological University, Singapore, 639798, Singapore
| | - S H Lim
- School of Biological Sciences, Nanyang Technological University, Singapore, 639798, Singapore
| | - J H Wu
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - T N Chen
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Z C Yang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing, 100871, China
| | - Y L Hao
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing, 100871, China
| | - B Liedberg
- Centre for Biomimetic Sensor Science, School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - P H Yap
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, 308232, Singapore
| | - K Wang
- College of Biomedical Engineering, Taipei Medical University, Taipei, 11031, Taiwan.,Nanyang Environment & Water Research Institute, Nanyang Technological University, Singapore, 637141, Singapore
| | - D P Tsai
- Department of Physics, National Taiwan University, Taipei, 10617, Taiwan
| | - C-W Qiu
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore, 117583, Singapore. .,SZU-NUS Collaborative Innovation Center for Optoelectronic Science and Technology, Shenzhen University, Shenzhen, 518060, China.
| | - A Q Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore. .,National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing, 100871, China.
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Lai S, Huang YQ, Liu AQ, Wu HW. Haemolysis during sodium dimercaptosulphonate therapy for Wilson's disease in G6PD-deficient patients: First report of two cases. J Clin Pharm Ther 2017; 42:783-785. [PMID: 28635014 DOI: 10.1111/jcpt.12576] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 05/18/2017] [Indexed: 01/05/2023]
Abstract
WHAT IS KNOWN AND OBJECTIVE Wilson's disease (WD) is an inherited disorder in which defective biliary excretion of copper leads to its accumulation. Sodium dimercaptosulphonate (DMPS) is used as the primary therapy in China. CASE DESCRIPTION We report two cases, with WD and G6PD deficiency, who developed haemolysis on treatment with DMPS, without any other known risk. After withdrawal of DMPS and administration of dexamethasone and packed red blood cells, the patients recovered. WHAT IS NEW AND CONCLUSION Clinicians should keep in mind haemolysis as a potentially life-threatening side effect of DMPS in patients with G6PD.
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Affiliation(s)
- S Lai
- Department of Pharmacy, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Department of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China
| | - Y Q Huang
- Department of Neurology, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
| | - A Q Liu
- Department of Neurology, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
| | - H W Wu
- Department of Pharmacy, the First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, China
- Department of Clinical Pharmacy, Guangdong Pharmaceutical University, Guangzhou, China
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Zhang M, Zhang W, Liu AQ, Li FC, Lan CF. Tunable Polarization Conversion and Rotation based on a Reconfigurable Metasurface. Sci Rep 2017; 7:12068. [PMID: 28935949 PMCID: PMC5608903 DOI: 10.1038/s41598-017-11953-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 08/18/2017] [Indexed: 11/09/2022] Open
Abstract
Polarization is an important property of electromagnetic (EM) wave and different polarization manipulations are required for varied optical applications. Here we report a reconfigurable metasurface which achieves both the polarization conversion and the polarization rotation in THz regime. The metasurface is reconfigured through the micro-electro-mechanical-systems (MEMS) actuation. The cross polarization transmittance from a linear polarized incidence is experimentally tuned from 0 to 28% at 2.66 THz. In addition, the polarization rotation angle is effectively changed from −12.8° to 13.1° at 1.78 THz. The tunable bi-functional metasurface for polarization conversion and the polarization rotation can be flexibly applied in various applications such as imaging, polarization microscopy and material analysis, etc.
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Affiliation(s)
- M Zhang
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China.,School of Engineering and Applied Science, Harvard University, Cambridge, 02138, USA
| | - W Zhang
- School of Engineering and Applied Science, Harvard University, Cambridge, 02138, USA.,School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - A Q Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - F C Li
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China.
| | - C F Lan
- School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China. .,School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin, 150080, China.
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32
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Shi YZ, Xiong S, Chin LK, Yang Y, Zhang JB, Ser W, Wu JH, Chen TN, Yang ZC, Hao YL, Liedberg B, Yap PH, Zhang Y, Liu AQ. High-resolution and multi-range particle separation by microscopic vibration in an optofluidic chip. Lab Chip 2017. [PMID: 28634603 DOI: 10.1039/c7lc00484b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
An optofluidic chip is demonstrated in experiments for high-resolution and multi-range particle separation through the optically-induced microscopic vibration effect, where nanoparticles are trapped in loosely overdamped optical potential wells created with combined optical and fluidic constraints. It is the first demonstration of separating single nanoparticles with diameters ranging from 60 to 100 nm with a resolution of 10 nm. Nanoparticles vibrate with an amplitude of 3-7 μm in the loosely overdamped potential wells in the microchannel. The proposed optofluidic device is capable of high-resolution particle separation at both nanoscale and microscale without reconfiguring the device. The separation of bacteria from other larger cells is accomplished using the same chip and operation conditions. The unique trapping mechanism and the superb performance in high-resolution and multi-range particle separation of the proposed optofluidic chip promise great potential for a diverse range of biomedical applications.
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Affiliation(s)
- Y Z Shi
- School of Mechanical Engineering, Xi'an Jiao Tong University, Xian 710049, China
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Fei DD, Li B, Gao F, Liu AQ, Jin Y, Wang QT. [Effects of cell-to-cell communication and histone acetyltransferase on the change of osteogenic differentiation ability among single-cell clones from healthy periodontium with heterogeneity of osteogenic differentiation abilities]. Zhonghua Kou Qiang Yi Xue Za Zhi 2017; 52:283-288. [PMID: 28482443 DOI: 10.3760/cma.j.issn.1002-0098.2017.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of cell-to-cell communication amongst single-cell clones from healthy periodontium with different osteogenic differentiation potentials on change of osteogenic differentiation capabilities and the role histone acetyltransferase partaken in this process. Methods: In order to research the change of osteogenic differentiation ability via cell-to-cell communication, indirect co-culture method was used by placing two single-cell clones with different osteogenesis potentials in each of the 6-well plates. Blank control, weak and strong osteogenic groups were set up, corresponding to Transwell chambers with blank, cells of weak osteogenesis ability and cells of strong osteogenesis ability, respectively. Each group was made in triplicate. After co-culture for four days, Transwell chamber was removed. Quantitative real-time PCR (qPCR) and alizarin red staining were employed to detect the change of osteogenic differentiation ability. The acetylation level of H3 was measured by using Western blotting. Histone acetyltransferases were detected by qPCR. Results: Single-cell clones were ensured from mesenchymal stem cells by flow cytometer, the positive expression of CD29, CD90, CD105, CD146 was (99.80±0.02)%, (99.36±0.18)%, (99.41±0.05)% and (95.10±2.11)%, respectively. And CD31 and CD34 expression were (0.29±0.11)% and (0.22±0.13)%, respectively. Alizarin red and oil red O staining confirmed that single-cell clones had the abilities of adipogenesis and osteogenesis. Alkaline phosphatase (ALP) and alizarin red staining indicated that different single-cell clones were heterogeneity in osteogenesis differentiation. Indirect co-culture indicated that the mRNA expression of osteocalcin (OCN) were 14.24±5.60 and 4.78±2.90, respectively and Runt-related transcription factor 2 (RUNX2) were 2.75±1.44 and 1.61±0.44, respectively, in strong and weak osteogenic groups. They were significantly higher compared to the blank group (the mRNA expression of OCN and RUNX2 were 1.00±0.47 and 1.00±0.39, respectively). The expression of OCN and RUNX2 were also higher in strong osteogenic group than that in weak osteogenic group (P<0.05). The mean gray level of the acetylation of H3 in strong osteogenic group (0.76±0.09) and weak osteogenic group (0.54±0.12) were also higher than that in the blank group (0.30±0.04)(P<0.05). qPCR results showed that KAT6A in strong osteogenic group exhibiting higher expression (P<0.05) compared to weak osteogenic group and the blank group, which were corresponding to the changes of acetylation levels. Conclusions: Single-cell clones from healthy periodontium showed heterogeneity in osteogenic differentiation abilities. Single-cell clones with strong osteogenesis abilities had an advantage over others by promoting others' osteogenesis differentiation and this change mediated by cell-to-cell communication might be caused by modulating KAT6A to affect the acetylation level of histone.
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Affiliation(s)
- D D Fei
- Department of Periodontology, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Xi'an 710032, China
| | - B Li
- Department of Histology and Pathologyy, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Xi'an 710032, China
| | - F Gao
- Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Ningxia Medical University & Hospital of Stomatology, The General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - A Q Liu
- Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Xi'an 710032, China
| | - Y Jin
- Department of Histology and Pathologyy, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Xi'an 710032, China
| | - Q T Wang
- Department of Periodontology, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Xi'an 710032, China
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Zhao HT, Yang Y, Chin LK, Chen HF, Zhu WM, Zhang JB, Yap PH, Liedberg B, Wang K, Wang G, Ser W, Liu AQ. Correction: Optofluidic lens with low spherical and low field curvature aberrations. Lab Chip 2016; 16:2135. [PMID: 27149105 DOI: 10.1039/c6lc90052f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Correction for 'Optofluidic lens with low spherical and low field curvature aberrations' by H. T. Zhao et al., Lab Chip, 2016, 16, 1617-1624.
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Affiliation(s)
- H T Zhao
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
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35
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Zhao HT, Yang Y, Chin LK, Chen HF, Zhu WM, Zhang JB, Yap PH, Liedberg B, Wang K, Wang G, Ser W, Liu AQ. Optofluidic lens with low spherical and low field curvature aberrations. Lab Chip 2016; 16:1617-24. [PMID: 27050492 DOI: 10.1039/c6lc00295a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
This paper reports an optofluidic lens with low spherical and low field curvature aberrations through the desired refractive index profile by precisely controlling the mixing between ethylene glycol and deionized water in an optofluidic chip. The experimental results demonstrate that the spherical aberration is reduced to 19.5 μm and the full width at half maximum of the focal point is 7.8 μm with a wide divergence angle of 35 degrees. In addition, the optofluidic lens can focus light at different off-axis positions on the focal plane with Δx' < 6.8 μm and at opposite transverse positions with |Δy - Δy'| < 5.7 μm. This is the first demonstration of a special optofluidic lens that significantly reduces both the spherical and field curvature aberrations, which enhances the focusing power and facilitates multiple light source illumination using a single lens. It is anticipated to have high potential for applications such as on-chip light manipulation, sample illumination and multiplexed detection.
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Affiliation(s)
- H T Zhao
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
| | - Y Yang
- School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - L K Chin
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
| | - H F Chen
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
| | - W M Zhu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
| | - J B Zhang
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
| | - P H Yap
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 308232
| | - B Liedberg
- Interdisciplinary Graduate School, Nanyang Technological University, Singapore 639798
| | - K Wang
- Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan and College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan
| | - G Wang
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
| | - W Ser
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
| | - A Q Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798.
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Chen XN, Liu AQ, Ge LY. Mechanism for Helicobacter pylori infection to regulate Fas-associated factor 1 expression through nuclear factor-κB signaling pathway. Shijie Huaren Xiaohua Zazhi 2016; 24:1405-1411. [DOI: 10.11569/wcjd.v24.i9.1405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore the influence of Helicobacter pylori (H. pylori) infection on human gastric cancer cells overexpressing Fas-associated factor 1 (FAF1) after knockout of IKKβ or p65 of the nuclear factor-κB (NF-κB) pathway, in order to further clarify the mechanism of H. pylori in gastric carcinogenesis.
METHODS: Lentivirus vectors carrying siRNA targeting IKKβ or p65 were constructed (LV-IKKβ-RNAi, LV-p65-RNAi) and used to transfecting human gastric cancer cells HGC-27 overexpressing FAF1. IKKβ, p65, and FAF1 mRNA and protein expression was detected by real-time PCR and Western blot before and after transfection. CCK8 assay was applied to detect cell proliferation after transfection. The transfected cells were infected with H. pylori culture filtrate, and real-time PCR and Western blot were applied to detect IKKβ, p65 and FAF1 expression before and after H. pylori infection.
RESULTS: LV-IKKβ-RNAi, LV-p65-RNAi and negative control (LV-NC-RNAi) were transfected into HGC-27 cells overexpressing FAF1 successfully. After transfection for 72 h, the expression of IKKβ and p65 mRNA and protein in the LV-IKKβ-RNAi group and LV-p65-RNAi group were significantly lower than that in the LV-NC-RNAi group and untransfected group (P < 0.01). There was no statistically significant difference in the expression of FAF1 mRNA and protein in the four groups (P > 0.05). The proliferation of cells in the LV-IKKβ-RNAi group and LV-p65-RNAi group increased. H. pylori culture filtrate was used to infect different groups of cells. There was no statistically significant difference in the expression of IKKβ and p65 mRNA and protein in the LV-IKKβ-RNAi group and LV-p65-RNAi group before and after H. pylori infection (P > 0.05), but the expression of IKKβ and p65 mRNA and protein in the LV-NC-RNAi group and untransfected group after H. pylori infection was significantly higher than that before H. pylori infection (P < 0.01). There was no statistically significant difference in the expression of FAF1 mRNA and protein in the LV-IKKβ-RNAi group and LV-p65-RNAi group before and after H. pylori infection (P > 0.05), but the expression of FAF1 mRNA and protein in the LV-NC-RNAi group and untransfected group after H. pylori infection was significantly lower than that before H. pylori infection (P < 0.01).
CONCLUSION: H. pylori infection might regulate FAF1 expression through the NF-κB signaling pathway, and downregulation of FAF1 could lead to gastric carcinogenesis.
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Abstract
Since 1980, when endoscopic ultrasonography (EUS) was invented, great progress has been made in the development of EUS devices and technology, and EUS-guided diagnosis and treatment of digestive diseases have been widely adopted. Because of its safety, effectiveness and minimal invasion, EUS-guided interventional diagnosis and treatment of digestive diseases have been widely applied in the clinical work, and more and more new technologies are being developed. In this paper, we review the recent progress of EUS for the interventional diagnosis and treatment of digestive diseases.
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Shen YH, Liu AQ, Liu LY, Geng FF. Endoscopic ultrasonography for differentiation of malignant and benign common bile duct strictures. Shijie Huaren Xiaohua Zazhi 2015; 23:4892-4897. [DOI: 10.11569/wcjd.v23.i30.4892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To assess the diagnostic value of endoscopic ultrasonography (EUS) in the differentiation of malignant and benign common bile duct strictures.
METHODS: A retrospective review was undertaken of 39 patients with clinically suspected bile duct stricture who underwent EUS. EUS findings were compared with transabdominal ultrasound and MRI findings. The final diagnosis was based on clinical data, histopathology, cytology and follow-up results ( ≥ 4 mo). The diagnostic value of EUS for malignant or benign common bile duct strictures was analyzed.
RESULTS: Of all the 39 patients, 30 were diagnosed with malignant common bile duct stricture and 9 were diagnosed with benign disease. The accuracy rates of EUS, MRI, and B-ultrasound in the differential diagnosis of bile duct strictures were 92.3%, 76.9% and 61.8%, respectively, which were statistically significant (P < 0.05). The sensitivity, specificity, positive predictive value and negative predictive value of EUS were 96.4%, 81.2%, 93.1%, and 90.0%, respectively. The sensitivity and negative predictive value of these three methods were statistically significant, with EUS having the highest values (P < 0.05). In contrast, the specificity and positive predictive value had no statistically significant differences among different groups (P > 0.05). Four of 39 patients had a pathological or cytological diagnosis by endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA). The accuracy rate of the EUS-FNA was 100%, which was statistically significant compared with those of EUS, MRI, and B-ultrasound (P < 0.05).
CONCLUSION: EUS has a higher accuracy rate in the differential diagnosis of benign and malignant common bile duct strictures than B-ultrasound and MRI, and EUS-FNA can improve the ability to distinguish benign and malignant common bile duct strictures.
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Collins DJ, Neild A, deMello A, Liu AQ, Ai Y. The Poisson distribution and beyond: methods for microfluidic droplet production and single cell encapsulation. Lab Chip 2015; 15:3439-59. [PMID: 26226550 DOI: 10.1039/c5lc00614g] [Citation(s) in RCA: 302] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
There is a recognized and growing need for rapid and efficient cell assays, where the size of microfluidic devices lend themselves to the manipulation of cellular populations down to the single cell level. An exceptional way to analyze cells independently is to encapsulate them within aqueous droplets surrounded by an immiscible fluid, so that reagents and reaction products are contained within a controlled microenvironment. Most cell encapsulation work has focused on the development and use of passive methods, where droplets are produced continuously at high rates by pumping fluids from external pressure-driven reservoirs through defined microfluidic geometries. With limited exceptions, the number of cells encapsulated per droplet in these systems is dictated by Poisson statistics, reducing the proportion of droplets that contain the desired number of cells and thus the effective rate at which single cells can be encapsulated. Nevertheless, a number of recently developed actively-controlled droplet production methods present an alternative route to the production of droplets at similar rates and with the potential to improve the efficiency of single-cell encapsulation. In this critical review, we examine both passive and active methods for droplet production and explore how these can be used to deterministically and non-deterministically encapsulate cells.
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Affiliation(s)
- David J Collins
- Engineering Product Design pillar, Singapore University of Technology and Design, Singapore.
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Zhu W, Song Q, Yan L, Zhang W, Wu PC, Chin LK, Cai H, Tsai DP, Shen ZX, Deng TW, Ting SK, Gu Y, Lo GQ, Kwong DL, Yang ZC, Huang R, Liu AQ, Zheludev N. A flat lens with tunable phase gradient by using random access reconfigurable metamaterial. Adv Mater 2015; 27:4739-43. [PMID: 26184076 DOI: 10.1002/adma.201501943] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 06/03/2015] [Indexed: 05/27/2023]
Abstract
The first demonstration of an optofluidic metamaterial is reported where resonant properties of every individual metamolecule can be continuously tuned at will using a microfluidic system. This is called a random-access reconfigurable metamaterial, which is used to provide the first demonstration of a tunable flat lens with wavefront-reshaping capabilities.
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Affiliation(s)
- Weiming Zhu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798
| | - Qinghua Song
- Université Paris-Est, UPEM, Marne-la-Vallée, Paris, F-77454, France
| | - Libin Yan
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798
| | - Wu Zhang
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798
| | - Pin-Chieh Wu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798
| | - Lip Ket Chin
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798
| | - Hong Cai
- Institute of Microelectronics, A*STAR, Singapore, 117686
| | - Din Ping Tsai
- Department of Physics, National Taiwan University, Taipei, 10617, Taiwan
| | - Zhong Xiang Shen
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798
| | - Tian Wei Deng
- Temasek Laboratories, 5A Engineering Drive 1, Singapore, 117411
| | - Sing Kwong Ting
- Temasek Laboratories, 5A Engineering Drive 1, Singapore, 117411
| | - Yuandong Gu
- Institute of Microelectronics, A*STAR, Singapore, 117686
| | - Guo Qiang Lo
- Institute of Microelectronics, A*STAR, Singapore, 117686
| | - Dim Lee Kwong
- Institute of Microelectronics, A*STAR, Singapore, 117686
| | - Zhen Chuan Yang
- Institute of Microelectronics, Peking University, Beijing, 100871, China
| | - Ru Huang
- Institute of Microelectronics, Peking University, Beijing, 100871, China
| | - Ai-Qun Liu
- School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798
| | - Nikolay Zheludev
- Optoelectronics Research Centre, Southampton, SO17 1BJ, UK
- Centre for Disruptive Photonic Technologies, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371
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Abstract
In this paper, for the first time, the tensile strength of water is directly measured using an optofluidic chip based on the displacement of air-water interface deformation with homogeneous nucleation. When water in a microchannel is stretched dynamically via laser-induced shock reflection at the air-water interface, the shock pressures are determined by measuring the displacements of the deformed interface. Observation of the vapor bubbles is used as a probe to identify the cavitation threshold with a critical distance, and the tensile strength of water at 20 °C is measured to be -33.3 ± 2.8 MPa. This method can be extended to investigate the tensile strength of other soft materials such as glycerol, which is measured to be -59.8 ± 10.7 MPa at 20 °C.
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Affiliation(s)
- Z G Li
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.
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Xiong S, Chin LK, Ando K, Tandiono T, Liu AQ, Ohl CD. Droplet generation via a single bubble transformation in a nanofluidic channel. Lab Chip 2015; 15:1451-1457. [PMID: 25605556 DOI: 10.1039/c4lc01184h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Here we report the first demonstration on droplet generation from the transformation of a single bubble in a nanofluidic channel by a laser-induced jet. A viscous two-dimensional Rayleigh-Plesset-type model is derived to describe the bubble dynamics in the nanofluidic channel, which accounts for the effect of shear stresses from the channel wall. The droplet generation (number and volume) is investigated experimentally by controlling the jet velocity via laser energy and distance. This study expands the understanding of jetting in the nanofluidic channel and demonstrates a novel method for femtoliter-volume single or multiple droplet formation. It is envisioned that this work will open new doors in on-demand generation of nanodroplets.
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Affiliation(s)
- S Xiong
- School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798.
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Liu XF, Yu JQ, Dalan R, Liu AQ, Luo KQ. Biological factors in plasma from diabetes mellitus patients enhance hyperglycaemia and pulsatile shear stress-induced endothelial cell apoptosis. Integr Biol (Camb) 2014; 6:511-22. [PMID: 24643402 DOI: 10.1039/c3ib40265g] [Citation(s) in RCA: 20] [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: 12/23/2022]
Abstract
People suffering from Diabetes Mellitus (DM) are prone to an array of vascular complications leading to end organ damage. The hallmark of these vascular complications is endothelium dysfunction, which is caused by endothelial cell (EC) apoptosis. Although the endothelial cell (EC) dysfunction induced by hyperglycaemia and fluid shear stress has been studied, the effects of biological factors in the blood of DM patients on EC integrity have not been reported in the in vitro models that mimic the physiological pulsatile nature of the vascular system. This study reports the development of a hemodynamic lab-on-a-chip system to investigate this issue. The pulsatile flow was applied to a monolayer of endothelial cells expressing a fluorescence resonance energy transfer (FRET)-based biosensor that changes colour from green to blue in response to caspase-3 activation during apoptosis. Plasma samples from healthy volunteers and DM patients were compared to identify biological factors that are critical to endothelial disruption. Three types of microchannels were designed to simulate the blood vessels under healthy and partially blocked pathological conditions. The results showed that EC apoptosis rates increased with increasing glucose concentration and levels of shear stress. The rates of apoptosis further increased by a factor of 1.4-2.3 for hyperglycaemic plasma under all dynamic conditions. Under static conditions, little difference was detected in the rate of EC apoptosis between experiments using plasma from DM patients and glucose medium, suggesting that the effects of hyperglycaemia and biological factors on the induction of EC apoptosis are all shear flow-dependent. A proteomics study was then conducted to identify biological factors, demonstrating that the levels of eight proteins, including haptoglobin and clusterin, were significantly down-regulated, while six proteins, including apolipoprotein C-III, were significantly up-regulated in the plasma of DM patients compared to healthy volunteers. This hemodynamic lab-on-a-chip system can serve as a high throughput platform to assess the risk of vascular complications of DM patients and to determine the effects of therapeutics or other interventions on EC apoptosis.
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Affiliation(s)
- X F Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457.
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Shi L, Liu LY, Gong MY, Wang Z, Zuo HB, Liu AQ. Relationship between Helicobacter pylori infection and primary hepatic carcinoma. Shijie Huaren Xiaohua Zazhi 2014; 22:5266-5272. [DOI: 10.11569/wcjd.v22.i34.5266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the relationship between Helicobacter pylori (H. pylori) infection and primary hepatic carcinoma.
METHODS: Clinical data for patients who were newly diagnosed with primary hepatic carcinoma and patients with non-cancer diseases treated at Guangxi Medical University Cancer Hospital from March 2010 to October 2013 were retrospectively analyzed to assess the relationship between H. pylori infection and primary hepatic carcinoma. Patients with primary hepatic carcinoma were further divided into two groups, one undergoing detection of HBV DNA copy number and H. pylori14C-UBT, and the other undergoing the determination of alpha-fetal protein (AFP) concentrations and H. pylori14C-UBT. The relationship among 14C-UBT value, HBV DNA copy number and AFP concentrations were assessed.
RESULTS: The positive rate of H. pylori infection was significantly higher in primary hepatic carcinoma than in non-cancer diseases, in poorly differentiated primary hepatic carcinoma than in moderately and well differentiated carcinoma, in stage Ⅲ/Ⅳ carcinoma than in stage Ⅰ/Ⅱ, in highly invasive carcinoma than in minimally invasive, and in bile duct cell type than in other two types. Gender and age had no significant impact on the positive rate of H. pylori infection. 14C-UBT value was significantly positively correlated with AFP concentrations (r = 0.88) and HBV DNA copy number (r = 0.657).
CONCLUSION: H. pylori infection may be associated with the occurrence and development of primary hepatic carcinoma.
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Xiong S, Chin LK, Tandiono T, Liu AQ, Ohl CD. Microjet-Initiated Nano-Gaseous Layer Pinch-Off from the Surface of a Bubble and Subsequent Breakup. Isr J Chem 2014. [DOI: 10.1002/ijch.201400101] [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: 11/06/2022]
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46
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Yu JQ, Huang W, Chin LK, Lei L, Lin ZP, Ser W, Chen H, Ayi TC, Yap PH, Chen CH, Liu AQ. Droplet optofluidic imaging for λ-bacteriophage detection via co-culture with host cell Escherichia coli. Lab Chip 2014; 14:3519-24. [PMID: 25008551 DOI: 10.1039/c4lc00042k] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Bacteriophages are considered as attractive indicators for determining drinking water quality since its concentration is strongly correlated with virus concentrations in water samples. Previously, bacteriophage detection was based on a plague assay that required a complicated labelling technique and a time-consuming culture assay. Here, for the first time, a label-free bacteriophage detection is reported by using droplet optofluidic imaging, which uses host-cell-containing microdroplets as reaction carriers for bacteriophage infection due to a higher contact ratio. The optofluidic imaging is based on the effective refractive index changes in the microdroplet correlated with the growth rate of the infected host cells, which is highly sensitive, i.e. can detect one E. coli cell. The droplet optofluidic system is not only used in drinking water quality monitoring, but also has high potential applications for pathogenic bacteria detection in clinical diagnosis and food industry.
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Affiliation(s)
- J Q Yu
- School of Electrical & Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798.
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Zhang W, Zhu WM, Chia EEM, Shen ZX, Cai H, Gu YD, Ser W, Liu AQ. A pseudo-planar metasurface for a polarization rotator. Opt Express 2014; 22:10446-10454. [PMID: 24921746 DOI: 10.1364/oe.22.010446] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
New demonstrations of effective interaction between light and artificially electromagnetic interface, or the metasurface, have stimulated intensive research interests on control of light to realize applications in beam steering, optical imaging and light focusing, etc. Here we reported a new type of planar metasurface of which every individual metamolecule is single metallic layer with stereo structure and the metasurface is name as Pseudo-Planar Metasurface (PPM). The metamolecule of the PPM is a chiral structure and therefore derives significant optical activity.
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Ye JX, Liu AQ, Ge LY, Zhou SZ, Liang ZG. Effectiveness and safety profile of S-1-based chemotherapy compared with capecitabine-based chemotherapy for advanced gastric and colorectal cancer: A meta-analysis. Exp Ther Med 2014; 7:1271-1278. [PMID: 24940424 PMCID: PMC3991506 DOI: 10.3892/etm.2014.1576] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 02/13/2014] [Indexed: 01/30/2023] Open
Abstract
The aim of the present analysis was to compare the efficacy and safety profile of S-1-based chemotherapy (SBCT) versus capecitabine-based chemotherapy (CBCT) for advanced gastric cancer (AGC) and advanced colorectal cancer (ACRC). A meta-analysis was performed, which included eligible randomized controlled trials (RCTs) that were identified using RevMan 5.1.0 software. A total of 1,064 patients from 11 RCTs, comprising of 527 patients in the SBCT group and 537 patients in the CBCT group, were included in the analysis. For AGC, the meta-analysis of overall survival (OS) [hazard ratio (HR), 0.98; 95% confidence interval (CI), 0.85–1.12], time to progression (HR, 0.95; 95% CI, 0.80–1.12) and overall response rate (ORR) [odds ratio (OR), 1.06; 95% CI, 0.72–1.55] of patients in the SBCT group indicated no statistical significance when compared with those in the CBCT group. Furthermore, for ACRC, a pooled analysis demonstrated no significant difference between the SBCT and CBCT groups (OS: HR, 0.82; 95% CI, 0.61–1.10; progression-free survival: HR, 0.79; 95% CI=0.60–1.04; ORR: OR, 1.27; 95% CI, 0.91–1.78). The statistically significant differences identified in the overall meta-analysis indicated a low incidence of grade 3–4 hand-foot-syndrome (OR, 0.15; 95% CI, 0.06–0.36) in the SBCT group; however no statistically significant difference was observed in the incidence of grade 3–4 anemia, thrombocytopenia, leucopenia, neutropenia, diarrhea, stomatitis or nausea/vomiting. The SBCT treatment exhibited similar efficacy and an approximately equivalent safety profile compared with the CBCT treatment and was an alternative to CBCT for patients with AGC or ACRC; however, further investigation is required to provide confirmation.
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Affiliation(s)
- Jia-Xiang Ye
- Department of Medical Oncology, The Cancer Institute, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Ai-Qun Liu
- Department of Medical Oncology, The Cancer Institute, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Lian-Ying Ge
- Department of Medical Oncology, The Cancer Institute, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Shao-Zhang Zhou
- Department of Medical Oncology, The Cancer Institute, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Zhong-Guo Liang
- Department of Radiation Oncology, The Cancer Institute, Affiliated Tumor Hospital of Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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Yuan YL, Liu AQ, Feng J, Chen JW, Ge LY. Effects of FAF1 overexpression on proliferation and apoptosis of gastric carcinoma HGC-27 cells. Shijie Huaren Xiaohua Zazhi 2014; 22:17-23. [DOI: 10.11569/wcjd.v22.i1.17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the influence of the overexpression of Fas-associated factor 1 (FAF1) on cell proliferation and apoptosis in human gastric cancer cell line HGC-27 to explore the relationship between FAF1 and gastric cancer.
METHODS: HGC-27 cells were divided into three groups: a negative control group, an empty vector transfection group (those transfected with empty vector particles 1.0 × 108 TU/mL), and a FAF1 overexpression group (those transfected with recombinant FAF1 lentiviral particles 1.0 × 108 TU/mL). Transfection efficiency was detected by laser scanning confocal microscopy. Protein expression level of FAF1 was detected by Western blot. Changes of cell ultrastructure were detected by transmission electron microscopy. Cell cycle distribution and apoptosis were observed by flow cytometry. Cell proliferation was detected by MTT assay.
RESULTS: The transfection efficiency was greater than 95% according to the green fluorescence. The expression of FAF1 protein was significantly higher in the FAF1 overexpression group than in the two control groups. The cell ultrastructure was normal in the two control groups; however, in the FAF1 overexpression group, cell nuclei split into pieces and apoptotic bodies and vacuoles formed. Overexpression of FAF1 inhibited HGC-27 cell growth, induced cell apoptosis, and changed the cell cycle progression. Compared to the negative control group and empty vector transfection group, cell doubling time was significantly extended, cell apoptosis was significantly increased (84.66% ± 5.92% vs 4.60% ± 3.80%, 7.32% ± 3.82%, both P < 0.05), the percentage of cells in G0/G1 phase was significantly decreased (46.43% ± 2.43% vs 54.93% ± 3.5%, 54% ± 0.3%, both P < 0.05), and the percentage of cells in G2/M phase was significantly increased (29.78% ± 3.91% vs 19.33% ± 3.82%, 20.93% ± 2.46%, both P < 0.05) in the FAF1 overexpression group.
CONCLUSION: FAF1 overexpression could inhibit cell growth, induce cell apoptosis, and change cell cycle progression.
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Liu AQ, Yang C. Optofluidics 2013. Lab Chip 2013; 13:2673-2674. [PMID: 23719899 DOI: 10.1039/c3lc90054a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Optofluidics is broadly defined as the fusion of optics and microfluidics. The term optofluidics was coined less than a decade ago. Yet, the term and the concept it encapsulates have pervaded through a significant fraction of the miniature system research community. Optofluidic research continues to grow in unanticipated directions. The Second International Conference on Optofluidics (Optofluidics-2012) showcased some of these developments. The conference was first organized by Xi'an Jiaotong University in 2011 and then Suzhou University, Institute of Nanotechnology, Xi'an Jiaotong University and Suzhou Industrial Park where it was proudly hosted as a summit conference of the CHInano conference in Suzhou on 13-15 Sep 2012. We are happy that Lab on a Chip, a major publication venue for optofluidic research has scheduled this themed issue.
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