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Yang SJ, Yu B, Dong S, Cai CW, Liu HY, Ye TT, Jia P. [Progress in complex network theory-based studies on the associations between health-related behaviors and chronic non-communicable diseases]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:408-416. [PMID: 38514318 DOI: 10.3760/cma.j.cn112338-20230715-00006] [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: 03/23/2024]
Abstract
In recent years, the research focus on health-related behavior and chronic non-communicable diseases has shifted from the analysis on independent effects of multiple causes on a single outcome to the evaluation the complex relationships between multiple causes and multiple effects. Complex network theory, an important branch of system science, considers the relationships among factors in a network and can reveal how health-related behaviors interact with chronic diseases through a series of complex network models and indicators. This paper summarizes the definition and development of complex network theory and its commonly used models, indicators, and case studies in the field of health-related behavior and chronic disease to promote the application of complex network theory in the field of health and provide reference and tools for future research of the relationship between health-related behavior and chronic disease.
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Affiliation(s)
- S J Yang
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China Affiliated Hospital of Chengdu University, Chengdu 610081, China International Institute of Spatial Lifecourse Health, Wuhan University, Wuhan 430072, China
| | - B Yu
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China Institute for Disaster Management and Reconstruction, Sichuan University-the Hong Kong Polytechnic University, Chengdu 610207, China
| | - S Dong
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - C W Cai
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - H Y Liu
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - T T Ye
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - P Jia
- International Institute of Spatial Lifecourse Health, Wuhan University, Wuhan 430072, China School of Resource and Environmental Sciences, Wuhan University, Wuhan 430072, China School of Public Health, Wuhan University, Wuhan 430071, China
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Dong S, Yu B, Yang B, Fan YZ, Fu Y, Feng CT, Zeng HL, Jia P, Yang SJ. [Mediating effects of body mass index and lipid levels on the association between alcohol consumption and hypertension in occupational population]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:440-446. [PMID: 38514322 DOI: 10.3760/cma.j.cn112338-20230715-00011] [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: 03/23/2024]
Abstract
Objective: To investigate the association between alcohol consumption and hypertension and SBP, DBP and the mediating effects of body mass index (BMI) and lipid level in occupational population, and provide reference for the intervention and prevention of hypertension. Methods: Based on the data of Southwest Occupational Population Cohort from China Railway Chengdu Group Co., Ltd., the information about the demographic characteristics, behavior and lifestyle, blood pressure and lipids level of the participants were collected through questionnaire survey, physical examination and blood biochemical test. Logistic/linear regression was used to analyze the association between alcohol consumption and hypertension, SBP and DBP. The individual and joint mediating effects of BMI, HDL-C, LDL-C, TG, and TC were explored through causal mediating analysis. A network analysis was used to explore the correlation between alcohol consumption, BMI and lipid levels, and hypertension. Results: A total of 22 887 participants were included, in whom 1 825 had newly detected hypertension. Logistic regression analysis found that current/former drinkers had a 33% increase of risk for hypertension compared with never-drinkers (OR=1.33, 95%CI:1.19-1.48). Similarly, alcohol consumption could increase SBP (β=1.05, 95%CI:0.69-1.40) and DBP (β=1.10, 95%CI:0.83-1.38). Overall, BMI and lipid levels could mediate the associations between alcohol consumption and hypertension, SBP and DBP by 21.91%, 28.40% and 22.64%, respectively. BMI and TG were the main mediators, and they were also the two nodes with the highest edge weight and bridge strength centrality in the network of alcohol consumption, BMI, lipid levels and hypertension. Conclusions: Alcohol consumption was associated with increased risk for hypertension, and BMI and TG were important mediators and key nodes in the network. It is suggested that paying attention to the alcohol consumption, BMI and TG might help prevent hypertension in occupational population.
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Affiliation(s)
- S Dong
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - B Yu
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China Institute for Disaster Management and Reconstruction, Sichuan University-the Hong Kong Polytechnic University, Chengdu 610207, China
| | - B Yang
- Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - Y Z Fan
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - Y Fu
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - C T Feng
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China Institute for Disaster Management and Reconstruction, Sichuan University-the Hong Kong Polytechnic University, Chengdu 610207, China
| | - H L Zeng
- Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - P Jia
- School of Resource and Environmental Sciences, Wuhan University, Wuhan 430072, China School of Public Health, Wuhan University, Wuhan 430071, China International Institute of Spatial Lifecourse Health, Wuhan University, Wuhan 430072, China
| | - S J Yang
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China Affiliated Hospital of Chengdu University, Chengdu 610081, China International Institute of Spatial Lifecourse Health, Wuhan University, Wuhan 430072, China
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Cai CW, Yang B, Fan YZ, Yu B, Dong S, Fu Y, Feng CT, Zeng HL, Jia P, Yang SJ. [Association between work environment noise perception and cardiovascular diseases, depressive symptoms, and their comorbidity in occupational population]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:417-424. [PMID: 38514319 DOI: 10.3760/cma.j.cn112338-20230715-00009] [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: 03/23/2024]
Abstract
Objective: To explore the association between occupational noise perception and cardiovascular disease (CVD), depression symptoms, as well as their comorbidity in occupational population and provide evidence for the prevention and control of physical and mental illnesses. Methods: A cross-sectional survey design was adopted, based on baseline data in population in 28 prefectures in Sichuan Province and Guizhou Province, and 33 districts (counties) in Chongqing municipality from Southwest Occupational Population Cohort from China Railway Chengdu Group Co., Ltd. during October to December 2021. A questionnaire survey was conducted to collect information about noise perception, depressive symptoms, and the history of CVD. Latent profile analysis model was used to determine identify noise perception type, and multinomial logistic regression analysis was conducted to explore the relationship between different occupational noise perception types and CVD, depression symptoms and their comorbidity. Results: A total of 30 509 participants were included, the mean age was (36.6±10.5) years, and men accounted for 82.0%. The direct perception of occupational noise, psychological effects and hearing/sleep impact of occupational noise increased the risk for CVD, depressive symptoms, and their comorbidity. By using latent profile analysis, occupational noise perception was classified into four levels: low, medium, high, and very high. As the level of noise perception increased, the association with CVD, depressive symptoms, and their comorbidity increased. In fact, very high level occupational noise perception were found to increase the risk for CVD, depressive symptoms, and their comorbidity by 2.14 (95%CI: 1.73-2.65) times, 8.80 (95%CI: 7.91-9.78) times, and 17.02 (95%CI: 12.78-22.66) times respectively compared with low-level occupational noise perception. Conclusions: Different types of occupational noise perception are associated with CVD and depression symptom, especially in the form of CVD complicated with depression symptom. Furthermore, the intensity of occupational noise in the work environment should be reduced to lower the risk for physical and mental health.
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Affiliation(s)
- C W Cai
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - B Yang
- Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - Y Z Fan
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - B Yu
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China Institute for Disaster Management and Reconstruction, Sichuan University-the Hong Kong Polytechnic University, Chengdu 610207, China
| | - S Dong
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - Y Fu
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China
| | - C T Feng
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China Institute for Disaster Management and Reconstruction, Sichuan University-the Hong Kong Polytechnic University, Chengdu 610207, China
| | - H L Zeng
- Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - P Jia
- School of Resource and Environmental Sciences, Wuhan University, Wuhan 430072, China School of Public Health, Wuhan University, Wuhan 430071, China International Institute of Spatial Lifecourse Health, Wuhan University, Wuhan 430072, China
| | - S J Yang
- West China School of Public Health/The Fourth Hospital of West China, Sichuan University, Chengdu 610041, China Affiliated Hospital of Chengdu University, Chengdu 610081, China International Institute of Spatial Lifecourse Health, Wuhan University, Wuhan 430072, China
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Tan J, Hu J, Dong S. Incorporating entity-level knowledge in pretrained language model for biomedical dense retrieval. Comput Biol Med 2023; 166:107535. [PMID: 37788508 DOI: 10.1016/j.compbiomed.2023.107535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 09/04/2023] [Accepted: 09/27/2023] [Indexed: 10/05/2023]
Abstract
In recent years, pre-trained language models (PLMs) have dominated natural language processing (NLP) and achieved outstanding performance in various NLP tasks, including dense retrieval based on PLMs. However, in the biomedical domain, the effectiveness of dense retrieval models based on PLMs still needs to be improved due to the diversity and ambiguity of entity expressions caused by the enrichment of biomedical entities. To alleviate the semantic gap, in this paper, we propose a method that incorporates external knowledge at the entity level into a dense retrieval model to enrich the dense representations of queries and documents. Specifically, we first add additional self-attention and information interaction modules in the Transformer layer of the BERT architecture to perform fusion and interaction between query/document text and entity embeddings from knowledge graphs. We then propose an entity similarity loss to constrain the model to better learn external knowledge from entity embeddings, and further propose a weighted entity concatenation mechanism to balance the impact of entity representations when matching queries and documents. Experiments on two publicly available biomedical retrieval datasets show that our proposed method outperforms state-of-the-art dense retrieval methods. In term of NDCG metrics, the proposed method (called ELK) improves the ranking performance of coCondenser by at least 5% on both two datasets, and also obtains further performance gain over state-of-the-art EVA methods. Though having a more sophisticated architecture, the average query latency of ELK is still within the same order of magnitude as that of other efficient methods.
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Affiliation(s)
- Jiajie Tan
- Guangdong Key Lab of Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Jinlong Hu
- Guangdong Key Lab of Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Shoubin Dong
- Guangdong Key Lab of Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China.
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Wang K, Jin GZ, Teng ZC, Ge CW, Liu ZJ, Ju JH, Dong S, Wang Q, Li YD. [Effects of tibial second toe free flap bridged with blood flow and nerve in the treatment of severe flexion contracture of the proximal interphalangeal joint]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2023; 39:765-770. [PMID: 37805788 DOI: 10.3760/cma.j.cn501225-20220707-00286] [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: 10/09/2023]
Abstract
Objective: To investigate the effects of tibial second toe free flap bridged with blood flow and nerve in the treatment of severe flexion contracture of the proximal interphalangeal joint. Methods: A retrospective observational study was conducted. From March 2013 to October 2019, 9 patients with severe flexion contracture (type Ⅲ) of the proximal interphalangeal joint after trauma operation, conforming to the inclusion criteria, were hospitalized in Suzhou Ruihua Orthopaedic Hospital, including 5 males and 4 females, aged from 17 to 62 years. After the contracture tissue affecting the extension of the proximal interphalangeal joint was cut off, and the scar tissue was resected, the size of the volar wound near the proximal interphalangeal joint in extended position was 2.0 cm×1.0 cm-2.5 cm×1.5 cm, with the length of proper digital artery and nerve defect being 1.0-1.5 cm. A free flap of the same size as the wound was cut from the tibial side of the second toe and transplanted to repair the wound, and the defective proper digital artery and nerve was repaired by bridging with the tibial proper plantar digital artery and nerve of about 1.5 cm in length. The full-thickness skin graft was taken from the proximal tibial side of the lower leg to repair the wound at flap donor site. The wound at skin graft donor site was sutured directly. The survival of flap and skin graft was observed after operation. The patients were followed up, and at the last follow-up, the recovery of the affected finger and the second toe, including the donor and recipient areas were observed, the two-point discrimination distances of the flap repaired site and the pulp of the affected finger were observed and measured at the same time, the blood flow patency of bridged vessel of the affected finger was examined by Allen test, and the function of the proximal interphalangeal joint of the affected finger was evaluated according to Chinese Medical Association's standard for the range of motion of proximal interphalangeal joint. Results: The flaps and skin grafts survived smoothly after operation. The follow-up after operation lasted for 5 to 22 months, with a mean of 10 months. At the last follow-up, the flap repaired site had good shape, good color and texture, with the two-point discrimination distance being 9-12 mm, and the two-point discrimination distance of the pulp of the affected finger was 6-10 mm; the Allen test results of the affected fingers were all negative (i.e., the bridged vessels had good blood flow patency), with no recurrence of flexion contracture, and the function of the proximal interphalangeal joint was evaluated as excellent; the skin graft area of the second toe was not ruptured but was a little pigmented, and the flexion and extension activities of toe were good. Conclusions: The tibial second toe free flap bridged with blood flow and nerve has reliable therapeutic effect in the treatment of severe flexion contracture of the proximal interphalangeal joint, and the color and texture of the flap repaired area are good. Bridging to repair the severely contracted proper digital artery and nerve is beneficial to improve the blood supply of the finger body and rebuild the sensation.
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Affiliation(s)
- K Wang
- Department of Hand Surgery, Suzhou Ruihua Orthopaedic Hospital, Suzhou 215104, China
| | - G Z Jin
- Department of Hand Surgery, Suzhou Ruihua Orthopaedic Hospital, Suzhou 215104, China
| | - Z C Teng
- Department of Hand Surgery, Suzhou Ruihua Orthopaedic Hospital, Suzhou 215104, China
| | - C W Ge
- Department of Hand Surgery, Suzhou Ruihua Orthopaedic Hospital, Suzhou 215104, China
| | - Z J Liu
- Department of Hand Surgery, Suzhou Ruihua Orthopaedic Hospital, Suzhou 215104, China
| | - J H Ju
- Department of Hand Surgery, Suzhou Ruihua Orthopaedic Hospital, Suzhou 215104, China
| | - S Dong
- Department of Hand Surgery, Suzhou Ruihua Orthopaedic Hospital, Suzhou 215104, China
| | - Q Wang
- Department of Hand Surgery, Suzhou Ruihua Orthopaedic Hospital, Suzhou 215104, China
| | - Y D Li
- Department of Hand Surgery, Suzhou Ruihua Orthopaedic Hospital, Suzhou 215104, China
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Hu J, Huang Y, Zhang X, Liao B, Hou G, Xu Z, Dong S, Li P. Identifying suicide attempts, ideation, and non-ideation in major depressive disorder from structural MRI data using deep learning. Asian J Psychiatr 2023; 82:103511. [PMID: 36791609 DOI: 10.1016/j.ajp.2023.103511] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023]
Abstract
The present study aims to identify suicide risks in major depressive disorders (MDD) patients from structural MRI (sMRI) data using deep learning. In this paper, we collected the sMRI data of 288 MDD patients, including 110 patients with suicide ideation (SI), 93 patients with suicide attempts (SA), and 85 patients without suicidal ideation or attempts (NS). And we developed interpretable deep neural network models to classify patients in three tasks including SA-versus-SI, SA-versus-NS, and SI-versus-NS, respectively. Furthermore, we interpreted the models by extracting the important features that contributed most to the classification, and further discussed these features or ROI/brain regions.
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Affiliation(s)
- Jinlong Hu
- Guangdong Key Lab of Communication and Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Yangmin Huang
- Guangdong Key Lab of Communication and Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Xiaojing Zhang
- Guangdong Provincial Key Laboratory of Genome Stability and Disease Prevention and Regional Immunity and Diseases, Department of Pathology, Shenzhen University Medical School, Shenzhen University, Shenzhen, China
| | - Bin Liao
- College of Mathematics and Informatics, South China Agricultural University, Guangzhou, China.
| | - Gangqiang Hou
- Shenzhen Kangning Hospital, Shenzhen Mental Health Center, Shenzhen, China.
| | - Ziyun Xu
- Shenzhen Kangning Hospital, Shenzhen Mental Health Center, Shenzhen, China
| | - Shoubin Dong
- Guangdong Key Lab of Communication and Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Ping Li
- Department of Chinese and Bilingual Studies, Faculty of Humanities, The Hong Kong Polytechnic University, Hong Kong, China
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Barlow GL, Schürch CM, Bhate SS, Phillips D, Young A, Dong S, Martinez HA, Kaber G, Nagy N, Ramachandran S, Meng J, Korpos E, Bluestone JA, Nolan GP, Bollyky PL. The Extra-Islet Pancreas Supports Autoimmunity in Human Type 1 Diabetes. medRxiv 2023:2023.03.15.23287145. [PMID: 36993739 PMCID: PMC10055577 DOI: 10.1101/2023.03.15.23287145] [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: 06/19/2023]
Abstract
In autoimmune Type 1 diabetes (T1D), immune cells progressively infiltrate and destroy the islets of Langerhans - islands of endocrine tissue dispersed throughout the pancreas. However, it is unclear how this process, called 'insulitis', develops and progresses within this organ. Here, using highly multiplexed CO-Detection by indEXing (CODEX) tissue imaging and cadaveric pancreas samples from pre-T1D, T1D, and non-T1D donors, we examine pseudotemporal-spatial patterns of insulitis and exocrine inflammation within large pancreatic tissue sections. We identify four sub-states of insulitis characterized by CD8 + T cells at different stages of activation. We further find that exocrine compartments of pancreatic lobules affected by insulitis have distinct cellularity, suggesting that extra-islet factors may make particular lobules permissive to disease. Finally, we identify "staging areas" - immature tertiary lymphoid structures away from islets where CD8 + T cells appear to assemble before they navigate to islets. Together, these data implicate the extra-islet pancreas in autoimmune insulitis, greatly expanding the boundaries of T1D pathogenesis.
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Abstract
The development of omics data and biomedical images has greatly advanced the progress of precision medicine in diagnosis, treatment, and prognosis. The fusion of omics and imaging data, i.e., omics-imaging fusion, offers a new strategy for understanding complex diseases. However, due to a variety of issues such as the limited number of samples, high dimensionality of features, and heterogeneity of different data types, efficiently learning complementary or associated discriminative fusion information from omics and imaging data remains a challenge. Recently, numerous machine learning methods have been proposed to alleviate these problems. In this review, from the perspective of fusion levels and fusion methods, we first provide an overview of preprocessing and feature extraction methods for omics and imaging data, and comprehensively analyze and summarize the basic forms and variations of commonly used and newly emerging fusion methods, along with their advantages, disadvantages and the applicable scope. We then describe public datasets and compare experimental results of various fusion methods on the ADNI and TCGA datasets. Finally, we discuss future prospects and highlight remaining challenges in the field.
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Liu SY, Dong S, Liao RQ, Jiang B, Zhang JT, Lin JT, Zhang S, Yang J, Nie Q, Yang X, Wang Q, Yan HH, Yan L, Tu H, Wang BC, Yang JJ, Zhou Q, Liu SY, Zhong WZ, Wu YL. LBA2 Phase II study of PD-L1 expression guidance on neoadjuvant (NA) nivolumab (Nivo) monotherapy with or without platinum-doublet chemotherapy in resectable NSCLC. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Liu X, Tan J, Fan J, Tan K, Hu J, Dong S. A Syntax-enhanced model based on category keywords for biomedical relation extraction. J Biomed Inform 2022; 132:104135. [PMID: 35842217 DOI: 10.1016/j.jbi.2022.104135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 05/10/2022] [Accepted: 07/05/2022] [Indexed: 10/17/2022]
Abstract
Certain categories in multi-category biomedical relationship extraction have linguistic similarities to some extent. Keywords related to categories and syntax structures of samples between these categories have some notable features, which are very useful in biomedical relation extraction. The pre-trained model has been widely used and has achieved great success in biomedical relationship extraction, but it is still incapable of mining this kind of information accurately. To solve the problem, we present a syntax-enhanced model based on category keywords. First, we prune syntactic dependency trees in terms of category keywords obtained by the chi-square test. It reduces noisy information caused by current syntactic parsing tools and retains useful information related to categories. Next, to encode category-related syntactic dependency trees, a syntactic transformer is presented, which enhances the ability of the pre-trained model to capture syntax structures and to distinguish multiple categories. We evaluate our method on three biomedical datasets. Compared with state-of-the-art models, our method performs better on these datasets. We conduct further analysis to verify the effectiveness of our method.
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Affiliation(s)
- Xiaofeng Liu
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China; Zhongshan Institute of Modern Industrial Technology, South China University of Technology, Zhongshan, China
| | - Jiajie Tan
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Jianye Fan
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Kaiwen Tan
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, China
| | - Jinlong Hu
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China; Zhongshan Institute of Modern Industrial Technology, South China University of Technology, Zhongshan, China
| | - Shoubin Dong
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China; Zhongshan Institute of Modern Industrial Technology, South China University of Technology, Zhongshan, China.
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Dong S, Wu T, Dong W, Si T. The identification of treatment-resistant depression patients in electronic health records, a retrospective cohort study in China. Eur Psychiatry 2022. [PMCID: PMC9566969 DOI: 10.1192/j.eurpsy.2022.687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction Previous Electronic Health Records (EHR) based studies adopted various definitions in identifying Treatment-Resistant Depression (TRD) patients. There is a lack of similar attempts among Chinese population which limits the understanding of TRD in China. Objectives Assess TRD identification using EHR from a major psychiatric hospital in China. Methods This study utilized a retrospective Major Depressive Disorder (MDD) cohort of patients who newly initiated pharmaceutical treatment (2010-2018); follow-up was ended upon 1-year or treatment discontinuation (≥120d without treatment). TRD was first identified based on common clinical definition of two prior regimen failures (change of regimen) with 4-week as regimen adequacy threshold (Def1). Alternative adequacy thresholds of 2-week and 6-week were applied. Based on Def1 (4-week), at least 3 distinctive regimens were additionally required in TRD identification (Def2). Further, a data-driven definition (Def3) based on drug count as having ≥3 antidepressants or ≥1 antipsychotic within 1 year was considered (Cepeda et al., 2018). Results From 12257 MDD patients included in the cohort, Def1 identified 633 (5.2%) TRD cases, whereas regimen adequacy thresholds of 2-week and 6-week identified 1772 (14.5%) and 61 (0.5%) cases, respectively. Further, Def2 identified 261 (2.4%) TRD cases. Finally, Def3 yielded 2449 (20.0%) TRD cases, including 1966 exclusive cases that were not identified by Def1. Conclusions This study showed different definitions for TRD identification had considerable impact on the number of patients identified among Chinese population, obscuring the comparability among EHR-based TRD studies. As first step, we found the criteria of regimen adequacy as major contributor to the observed variability in China. Disclosure No significant relationships.
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Tan K, Huang W, Liu X, Hu J, Dong S. A multi-modal fusion framework based on multi-task correlation learning for cancer prognosis prediction. Artif Intell Med 2022; 126:102260. [DOI: 10.1016/j.artmed.2022.102260] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 01/07/2022] [Accepted: 02/16/2022] [Indexed: 12/30/2022]
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Yang Z, Dong S. HSRec: Hierarchical self-attention incorporating knowledge graph for sequential recommendation. IFS 2022. [DOI: 10.3233/jifs-211953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Modeling user’s fine-grained preferences and dynamic preference evolution from their chronological behaviors are challenging and crucial for sequential recommendation. In this paper, we develop a Hierarchical Self-Attention Incorporating Knowledge Graph for Sequential Recommendation (HSRec). HSRec models not only the user’s intrinsic preferences but also the user’s external potential interests to capture the user’s fine-grained preferences. Specifically, the intrinsic interest module and potential interest module are designed to capture these two preferences respectively. In the intrinsic interest module, user’s sequential patterns are characterized from their behaviors via the self-attention mechanism. As for the potential interest module, high-order paths can be generated with the help of the knowledge graph. Therefore, a hierarchical self-attention mechanism is designed to aggregate the semantic information of user interaction from these paths. Specifically, an entity-level self-attention mechanism is applied to capture the sequential patterns contained in the high-order paths while an interaction-level self-attention mechanism is designed to further capture the semantic information from user interactions. Moreover, according to the high-order semantic relevance, HSRec can explore the user’s dynamic preferences at each time, thus describing the user’s dynamic preference evolution. Finally, experiments conducted on three real world datasets demonstrate the state-of-the-art performance of the HSRec.
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Affiliation(s)
- Zuoxi Yang
- Guangdong Key Lab of Computer Network School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Shoubin Dong
- Guangdong Key Lab of Computer Network School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
- Zhongshan Institute of Modern Industrial Technology, South China University of Technology, Zhongshan, China
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Chen C, Wang R, Dong S, Wang J, Ren CX, Chen CP, Yan J, Zhou T, Wu QH, Pei J, Chen J. Integrated proteome and lipidome analysis of naturally aged safflower seeds varying in vitality. Plant Biol (Stuttg) 2022; 24:266-277. [PMID: 34748691 DOI: 10.1111/plb.13357] [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] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
Seed ageing has an important effect on germination and productivity. During natural ageing, seed vigour decreases rapidly but, to date, the molecular mechanisms underlying this decrease have not been fully elucidated. Using omics, some of the details regarding seed vigour decline during natural ageing might be elucidated through integrated analysis. Safflower seed germination and physio-biochemical changes during natural ageing (stored for 4, 16 and 28 months) were determined. Proteome and lipidome profiling during natural seed ageing was performed, and the differentially expressed proteins and lipid metabolite species analysed. The surface and internal structures of cotyledons were observed. An integrating analysis of the proteome and lipidome was also carried out. Natural seed ageing significantly decreased safflower seed germination and vigour. 4,184 proteins and 1,193 lipids were quantified, both of which show huge differences among the different naturally aged seeds. The surface of the cotyledons collapsed and cracked, and the oil bodies become looser during natural ageing. The total content of DAG and PA increased, while the content of TAG and PL (PC, PE, PS, PI and PL) significantly decreased during seeds ageing. Two lipase genes (HH-026818-RA and HH-025320) likely participated in this degradation of lipids. We conclude that the enzymes that participate in glycerolipid metabolism and fatty acid degradation probably lead to the degradation of oil bodies (TAG) and membrane lipids (PC, PE, PS, PI, PG) and, ultimately, destroy the structure, causing a decline in seed vigour during natural seed ageing.
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Affiliation(s)
- C Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - R Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - S Dong
- The State Bank of Chinese Drug Germplam Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - J Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - C-X Ren
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - C-P Chen
- The State Bank of Chinese Drug Germplam Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - J Yan
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - T Zhou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- The State Bank of Chinese Drug Germplam Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Q-H Wu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - J Pei
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - J Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Liu X, Tan K, Dong S. Multi-granularity sequential neural network for document-level biomedical relation extraction. Inf Process Manag 2021. [DOI: 10.1016/j.ipm.2021.102718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Dong S, Wang Z, Zhou Q, Yang L, Zhang J, Chen Y, Liu S, Lin J, Liao R, Tu H, Xu C, Yang X, Zhong W, Yang J, Wu Y. P49.01 Drug Holiday Based on Minimal Residual Disease Status After Local Therapy Following EGFR-TKI Treatment for Patients With Advanced NSCLC. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Zhang Y, Betran AP, Li X, Liu D, Yuan N, Shang L, Lin W, Tu S, Wang L, Wu X, Zhu T, Zhang Y, Lu Z, Zheng L, Gu C, Fang J, Liu Z, Ma L, Cai Z, Yang X, Li H, Zhang H, Zhao X, Yan L, Wang L, Sun X, Luo Q, Liu L, Zhu J, Qin W, Yao Q, Dong S, Yang Y, Cui Z, He Y, Feng X, He L, Zhang H, Zhang L, Wang X, Souza JP, Qi H, Duan T, Zhang J. What is an appropriate caesarean delivery rate for China: a multicentre survey. BJOG 2021; 129:138-147. [PMID: 34559941 PMCID: PMC9297886 DOI: 10.1111/1471-0528.16951] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2021] [Indexed: 11/30/2022]
Abstract
Objective To assess the current status of caesarean delivery (CD) in China, propose reference CD rates for China overall, and by regions, investigate the main indications for CDs and identify possible areas for safe reduction. Design A multicentre cross‐sectional study. Setting A total of 94 hospitals across 23 provinces in China. Population A total of 73 977 randomly selected deliveries. Methods We used a modified Robson classification to characterise CDs in subgroups and by regions, and the World Health Organization (WHO) C‐Model to calculate reference CD rates. Main outcome measures CD rates in China. Results In 2015–2016, the overall CD rate in China was 38.9% (95% CI 38.6–39.3%). Considering the obstetric characteristics of the population, the multivariable model‐based reference CD rate was estimated at 28.5% (95% CI 28.3–28.8%). Accordingly, an absolute reduction of 10.4% (or 26.7% relative reduction) may be considered. The CD rate varied substantially by region. Previous CD was the most common indication in all regions, accounting for 38.2% of all CDs, followed by maternal request (9.8%), labour dystocia (8.3%), fetal distress (7.7%) and malpresentation (7.6%). Overall, 12.7% of women had prelabour CDs, contributing to 32.8% of the total CDs. Conclusions Nearly 39% of births were delivered by caesarean in China but a reduction of this rate by a quarter may be considered attainable. Repeat CD contributed more than one‐third of the total CDs. Given the large variation in maternal characteristics, region‐specific or even hospital‐specific reference CD rates are needed for precision management of CD. Tweetable abstract The caesarean rate in 2015–2016 in China was 38.9%, whereas the reference rate was 28.5%. The caesarean rate in 2015–2016 in China was 38.9%, whereas the reference rate was 28.5%. Linked article This article is commented on by M Varner, p. 148 in this issue. To view this mini commentary visit https://doi.org/10.1111/1471-0528.16953.
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Affiliation(s)
- Y Zhang
- Ministry of Education - Shanghai Key Laboratory of Children's Environmental Health, School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - A P Betran
- UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction, Department of Reproductive Health and Research, World Health Organization (WHO), Geneva, Switzerland
| | - X Li
- Obstetrics and Gynaecology Hospital of Fudan University, Shanghai, China
| | - D Liu
- Dongguan City Maternal and Child Health Hospital, Southern Medical University, Guangdong, China
| | - N Yuan
- Department of Obstetrics and Gynaecology, The Second Hospital Affiliated to Shaanxi University of Chinese Medicine, Shaanxi, China
| | - L Shang
- Department of Obstetrics, The Maternal and Child Health Hospital of Xinxiang, Henan, China
| | - W Lin
- Department of Obstetrics, The Maternal and Child Health Hospital of Dalian, Liaoning, China
| | - S Tu
- Department of Obstetrics and Gynaecology, Southwest Medical University, Sichuan, China
| | - L Wang
- Department of Obstetrics and Gynaecology, The First Hospital Affiliated to Kunming Medical University, Yunnan, China
| | - X Wu
- Department of Obstetrics, Jiangsu Women and Child Health Hospital, Jiangsu, China
| | - T Zhu
- The First People's Hospital of Zhaotong, Kunming Medical University, Yunnan, China
| | - Y Zhang
- Department of Obstetrics, The Maternal and Child Health Hospital of Qujing, Yunnan, China
| | - Z Lu
- Suining Central Hospital, Chongqing Medical University, Sichuan, China
| | - L Zheng
- Taizhou Hospital of Zhejiang Province, Zhejiang, China
| | - C Gu
- Yangzhou Maternal and Child Care Service Centre, Jiangsu, China
| | - J Fang
- Qingdao Chengyang People's Hospital, Shandong First Medical University, Shandong, China
| | - Z Liu
- Department of Obstetrics, The Maternal and Child Health Hospital of Baoji, Shaanxi, China
| | - L Ma
- Yanshi City People's Hospital, Henan, China
| | - Z Cai
- Department of Obstetrics and Gynaecology, Aviation Hospital of Beijing, China Medical University, Beijing, China
| | - X Yang
- Department of Obstetrics, The Maternal and Child Health Hospital of Luohu District, Shenzhen, China
| | - H Li
- Yanan University Affiliated Hospital, Shaanxi, China
| | - H Zhang
- Haikou Hospital of the Maternal and Child Health, Hainan, China
| | - X Zhao
- The First People's Hospital of Taizhou, Wenzhou Medical University, Zhejiang, China
| | - L Yan
- The Second Affiliated Hospital of Hebei North University, Hebei, China
| | - L Wang
- Department of Obstetrics and Gynaecology, The 174th Hospital of the Chinese People's Liberation Army, Xiamen University, Fujian, China
| | - X Sun
- Puyang Maternal and Child Care Centres, Henan, China
| | - Q Luo
- Luzhou People's Hospital, Sichuan, China
| | - L Liu
- Affiliated Hospital of Jiangsu University, Jiangsu, China
| | - J Zhu
- The Second People's Hospital of Tongxiang, Zhejiang, China
| | - W Qin
- Department of Obstetrics and Gynaecology, Aviation Hospital of Beijing, China Medical University, Beijing, China
| | - Q Yao
- The Central Hospital of Shaoyang, University of South China, Hunan, China
| | - S Dong
- Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Y Yang
- The First Affiliated Hospital of Anhui Medical University, Anhui, China
| | - Z Cui
- Department of Obstetrics, The Maternal and Child Health Hospital of Cangzhou, Hebei, China
| | - Y He
- The Second People's Hospital of Qingyuan City, Guangdong, China
| | - X Feng
- Department of Obstetrics and Gynaecology, Fujian Medical University Union Hospital, Fujian Medical University, Fujian, China
| | - L He
- The People's Hospital of Pengzhou, Sichuan, China
| | - H Zhang
- Department of Obstetrics, Eastern District of the Fourth Hospital of Hebei Medical University, Hebei, China
| | - L Zhang
- Ministry of Education - Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - X Wang
- Department of Obstetrics and Gynaecology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - J P Souza
- Department of Social Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, São Paulo, Brazil
| | - H Qi
- Department of Obstetrics and Gynaecology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - T Duan
- Department of Obstetrics, Shanghai First Maternity and Infant Hospital, Tongji University School of Medicine, Shanghai, China
| | - J Zhang
- Ministry of Education - Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Zhao ZQ, Dong S, Shi JT, Liang HJ, Yan TQ, Guo RL, Yang XD, Tang XM, Zhang X. [The prevention and management of approach-specific complications of abdominal aortic balloon occlusion in pelvic and sacral surgery]. Zhonghua Wai Ke Za Zhi 2021; 59:738-745. [PMID: 34404171 DOI: 10.3760/cma.j.cn112139-20210527-00226] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the causes,prevention and treatment of femoral artery puncture related complications caused by the application of resuscitative endovascular balloon occlusion of the aorta (REBOA) in the resection of pelvic and sacral tumors. Methods: Clinical data of 23 patients with femoral artery puncture related complications who received REBOA in the resection of pelvic and sacral tumors from August 2010 to August 2018 at the Musculoskeletal Tumor Center,Peking University People's Hospital were retrospectively analyzed.There were 8 males and 15 females,with the an age of (37.0±16.2) years (range:15 to 65 years).Arterial access via the Seldinger technique for REBOA was obtained in the right common femoral artery of 18 cases,and in the left of 6 cases.An arterial sheath with a diameter of 11 to 12 F(1 F≈0.33 mm) was used for the patient.The occurrence and treatment of postoperative complications were analyzed. Results: Acute femoral arterial thrombosis occurred in 18 patients,which was managed by open repair 48 hours postoperatively.Among the 349 patients admitted before 2015 who received hemostasis by compression after femoral artery sheath removal,12 patients (3.4%) developed acute femoral artery thrombosis.While the 476 patients admitted after 2015 who used a vascular stapler to close the femoral artery wound,6 patients (1.3%) developed acute femoral artery thrombosis.One case of retroperitoneal hematoma and 1 case of femoral pseudoaneurysm were found and surgically fixed.Postoperative follow-up was (40±18) months (range:13 to 108 months).Three cases with chronic lower extremity ischemia were confirmed by Doppler ultrasonography during 1 to 5 years follow-up.Two of them had minimal symptoms and denied further treatment,while the other one received femoral-femoral artery bypass surgery to restore distal flow for pain and numbness relief. Conclusions: Acute femoral arterial thrombosis was the most common femoral artery puncture.Technique refinement of REBOA,the use of percutaneous suture device and close follow-up can reduce the approach-specific complications,and help to detect and treat the complications timely,which may popularize the clinical application of REBOA.
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Affiliation(s)
- Z Q Zhao
- Musculoskeletal Tumor Center,Peking University People's Hospital,Beijing 100044,China
| | - S Dong
- Musculoskeletal Tumor Center,Peking University People's Hospital,Beijing 100044,China
| | - J T Shi
- Musculoskeletal Tumor Center,Peking University People's Hospital,Beijing 100044,China
| | - H J Liang
- Musculoskeletal Tumor Center,Peking University People's Hospital,Beijing 100044,China
| | - T Q Yan
- Musculoskeletal Tumor Center,Peking University People's Hospital,Beijing 100044,China
| | - R L Guo
- Musculoskeletal Tumor Center,Peking University People's Hospital,Beijing 100044,China
| | - X D Yang
- Musculoskeletal Tumor Center,Peking University People's Hospital,Beijing 100044,China
| | - X M Tang
- Musculoskeletal Tumor Center,Peking University People's Hospital,Beijing 100044,China
| | - Xuemin Zhang
- Department of Vascular Surgery,Peking University People's Hospital,Beijing 100044,China
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Tan K, Huang W, Liu X, Hu J, Dong S. A Hierarchical Graph Convolution Network for Representation Learning of Gene Expression Data. IEEE J Biomed Health Inform 2021; 25:3219-3229. [PMID: 33449889 DOI: 10.1109/jbhi.2021.3052008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The curse of dimensionality, which is caused by high-dimensionality and low-sample-size, is a major challenge in gene expression data analysis. However, the real situation is even worse: labelling data is laborious and time-consuming, so only a small part of the limited samples will be labelled. Having such few labelled samples further increases the difficulty of training deep learning models. Interpretability is an important requirement in biomedicine. Many existing deep learning methods are trying to provide interpretability, but rarely apply to gene expression data. Recent semi-supervised graph convolution network methods try to address these problems by smoothing the label information over a graph. However, to the best of our knowledge, these methods only utilize graphs in either the feature space or sample space, which restrict their performance. We propose a transductive semi-supervised representation learning method called a hierarchical graph convolution network (HiGCN) to aggregate the information of gene expression data in both feature and sample spaces. HiGCN first utilizes external knowledge to construct a feature graph and a similarity kernel to construct a sample graph. Then, two spatial-based GCNs are used to aggregate information on these graphs. To validate the model's performance, synthetic and real datasets are provided to lend empirical support. Compared with two recent models and three traditional models, HiGCN learns better representations of gene expression data, and these representations improve the performance of downstream tasks, especially when the model is trained on a few labelled samples. Important features can be extracted from our model to provide reliable interpretability.
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Shi HF, Chen L, Wang XX, Jiang H, Dong S, Zhuang Y, Wei Y, Qiao J, Ma XD, Zhao YY. [Incidence and trend of severe postpartum hemorrhage between 2016 and 2019 in China]. Zhonghua Fu Chan Ke Za Zhi 2021; 56:451-457. [PMID: 34304436 DOI: 10.3760/cma.j.cn112141-20210209-00070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the incidence and trend of severe postpartum hemorrhage (sPPH) in China, and to provide basic data for the development and evaluation of sPPH prevention and control strategy. Methods: Obstetric data was extracted from annual national representative sampling surveys based on the National Clinical Improvement System. From 2016 to 2019, 2 978, 3 400, 4 576 and 4 594 maternity hospitals with sPPH cases were included for statistics. The annual incidence of sPPH was calculated according to province and type of medical institutions and generalized linear model was emplyed to identify the determinants affecting sPPH incidence. Results: In China, sPPH incidence increased from 0.62% in 2016 to 0.93% in 2018, and was 0.92% in 2019. Eighteen provinces had an inverted U-shaped trend of sPPH over time and most of them had the highest incidence in 2018; ten provinces had an upward trend of sPPH and 3 provinces had a U-shaped trend. In 2019, the top five provinces with the highest sPPH incidence were Yunnan (1.88%), Beijing (1.45%), Jiangsu (1.31%), Guizhou (1.26%), and Ningxia Hui Autonomous Region (1.22%); the top five provinces with the lowest incidence were Henan (0.55%), Jiangxi (0.60%), Inner Mongolia Autonomous Region (0.64%), Liaoning (0.64%) and Gansu (0.69%). In 2019, the sPPH incidence in different types of medical institutions were as follows: tertiary public general hospital (1.15%), tertiary public specialized hospital (1.02%), secondary public general hospital (0.81%), private hospital (0.61%) and secondary public specialized hospital (0.58%). sPPH incidence was positively associated with proportion of twin pregnancies, macrosomia, primipara, and puerpera aged ≥35 years in maternity hospitals (P<0.05). Conclusions: sPPH incidence generally showes an increasing trend from 2016 and is stable at a high level in recent two years in China. It is warranted to further strengthen the monitoring of postpartum hemorrhage, and improve the capability of hierarchical management and treatment in maternity institutions and regions, in order to reduce sPPH incidence and maternal mortality.
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Affiliation(s)
- H F Shi
- Department of Obstetrics and Gynecology, Peking University Third Hospital, National Center for Healthcare Quality Management in Obstetrics, National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China
| | - L Chen
- Department of Obstetrics and Gynecology, Peking University Third Hospital, National Center for Healthcare Quality Management in Obstetrics, National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China
| | - X X Wang
- Department of Obstetrics and Gynecology, Peking University Third Hospital, National Center for Healthcare Quality Management in Obstetrics, National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China
| | - H Jiang
- Department of Obstetrics and Gynecology, Peking University Third Hospital, National Center for Healthcare Quality Management in Obstetrics, National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China
| | - S Dong
- Department of Medical Affairs, Peking University Third Hospital, Beijing 100191, China
| | - Y Zhuang
- Department of Medical Affairs, Peking University Third Hospital, Beijing 100191, China
| | - Y Wei
- Department of Obstetrics and Gynecology, Peking University Third Hospital, National Center for Healthcare Quality Management in Obstetrics, National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China
| | - J Qiao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, National Center for Healthcare Quality Management in Obstetrics, National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China
| | - X D Ma
- Department of Healthcare Quality Evaluation, Bureau of Medical Administration, National Health Commission of the People's Republic of China, Beijing 100044, China
| | - Y Y Zhao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, National Center for Healthcare Quality Management in Obstetrics, National Clinical Research Center for Obstetrics and Gynecology, Beijing 100191, China
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Hu J, Cao L, Li T, Dong S, Li P. GAT-LI: a graph attention network based learning and interpreting method for functional brain network classification. BMC Bioinformatics 2021; 22:379. [PMID: 34294047 PMCID: PMC8296748 DOI: 10.1186/s12859-021-04295-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 07/08/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Autism spectrum disorders (ASD) imply a spectrum of symptoms rather than a single phenotype. ASD could affect brain connectivity at different degree based on the severity of the symptom. Given their excellent learning capability, graph neural networks (GNN) methods have recently been used to uncover functional connectivity patterns and biological mechanisms in neuropsychiatric disorders, such as ASD. However, there remain challenges to develop an accurate GNN learning model and understand how specific decisions of these graph models are made in brain network analysis. RESULTS In this paper, we propose a graph attention network based learning and interpreting method, namely GAT-LI, which learns to classify functional brain networks of ASD individuals versus healthy controls (HC), and interprets the learned graph model with feature importance. Specifically, GAT-LI includes a graph learning stage and an interpreting stage. First, in the graph learning stage, a new graph attention network model, namely GAT2, uses graph attention layers to learn the node representation, and a novel attention pooling layer to obtain the graph representation for functional brain network classification. We experimentally compared GAT2 model's performance on the ABIDE I database from 1035 subjects against the classification performances of other well-known models, and the results showed that the GAT2 model achieved the best classification performance. We experimentally compared the influence of different construction methods of brain networks in GAT2 model. We also used a larger synthetic graph dataset with 4000 samples to validate the utility and power of GAT2 model. Second, in the interpreting stage, we used GNNExplainer to interpret learned GAT2 model with feature importance. We experimentally compared GNNExplainer with two well-known interpretation methods including Saliency Map and DeepLIFT to interpret the learned model, and the results showed GNNExplainer achieved the best interpretation performance. We further used the interpretation method to identify the features that contributed most in classifying ASD versus HC. CONCLUSION We propose a two-stage learning and interpreting method GAT-LI to classify functional brain networks and interpret the feature importance in the graph model. The method should also be useful in the classification and interpretation tasks for graph data from other biomedical scenarios.
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Affiliation(s)
- Jinlong Hu
- Guangdong Key Lab of Communication and Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China. .,Zhongshan Institute of Modern Industrial Technology, South China University of Technology, Zhongshan, China.
| | - Lijie Cao
- Guangdong Key Lab of Communication and Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Tenghui Li
- Guangdong Key Lab of Communication and Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Shoubin Dong
- Guangdong Key Lab of Communication and Computer Network, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China.,Zhongshan Institute of Modern Industrial Technology, South China University of Technology, Zhongshan, China
| | - Ping Li
- Department of Chinese and Bilingual Studies, Faculty of Humanities, The Hong Kong Polytechnic University, Hong Kong, China
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22
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Caragata EP, Dong S, Dong Y, Simões ML, Tikhe CV, Dimopoulos G. Prospects and Pitfalls: Next-Generation Tools to Control Mosquito-Transmitted Disease. Annu Rev Microbiol 2021; 74:455-475. [PMID: 32905752 DOI: 10.1146/annurev-micro-011320-025557] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Mosquito-transmitted diseases, including malaria and dengue, are a major threat to human health around the globe, affecting millions each year. A diverse array of next-generation tools has been designed to eliminate mosquito populations or to replace them with mosquitoes that are less capable of transmitting key pathogens. Many of these new approaches have been built on recent advances in CRISPR/Cas9-based genome editing. These initiatives have driven the development of pathogen-resistant lines, new genetics-based sexing methods, and new methods of driving desirable genetic traits into mosquito populations. Many other emerging tools involve microorganisms, including two strategies involving Wolbachia that are achieving great success in the field. At the same time, other mosquito-associated bacteria, fungi, and even viruses represent untapped sources of new mosquitocidal or antipathogen compounds. Although there are still hurdles to be overcome, the prospect that such approaches will reduce the impact of these diseases is highly encouraging.
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Affiliation(s)
- E P Caragata
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - S Dong
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - Y Dong
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - M L Simões
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - C V Tikhe
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
| | - G Dimopoulos
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA; , , , , ,
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Li L, Zou C, Dong S, Wu ZX, Ashby CR, Chen ZS, Qiu C. Lurbinectedin for the treatment of small cell lung cancer. Drugs Today (Barc) 2021; 57:377-385. [PMID: 34151904 DOI: 10.1358/dot.2021.57.6.3294559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Small cell lung cancer (SCLC) is a rapidly progressive, aggressive metastatic and lethal subtype of lung cancer. Unfortunately, there has been little progress regarding the development of novel treatments for SCLC. However, lurbinectedin, a transcriptional inhibitor, has emerged as a potential novel treatment for cancer. It produces antitumor efficacy by inhibiting oncogenic transcription activity, inducing the accumulation of DNA double-strand breaks and modulating the tumor microenvironment (TME). Data from phase I/II trials indicates that lurbinectedin has significant antitumor efficacy and tolerable adverse effects in SCLC patients. Furthermore, lurbinectedin is efficacious in platinum-sensitive and platinum-resistant SCLC patients and in those with SCLC relapse after second-line treatment. In 2020, the U.S. Food and Drug Administration (FDA) approved lurbinectedin for the treatment of adult patients with metastatic SCLC or for patients that have received platinum-based chemotherapy. In this review, we discuss the molecular profile and the preclinical and clinical studies of lurbinectedin in the treatment of SCLC patients.
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Affiliation(s)
- L Li
- Key Laboratory of Shenzhen Respiratory Diseases, Institute of Respiratory Disease, The Second Affiliated Hospital of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen People's Hospital, Shenzhen, China
| | - C Zou
- Clinical Research Center, The Second Affiliated Hospital of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen People's Hospital, Shenzhen, China
| | - S Dong
- Clinical Research Center, The Second Affiliated Hospital of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen People's Hospital, Shenzhen, China
| | - Z-X Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - C R Ashby
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - Z-S Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA.
| | - C Qiu
- Key Laboratory of Shenzhen Respiratory Diseases, Institute of Respiratory Disease, The Second Affiliated Hospital of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen People's Hospital, Shenzhen, China.
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Abstract
Non-small cell lung cancer (NSCLC) is one of the most devastating cancers with high mortality worldwide. By inhibiting the activity of specific molecular targets in the cancer cells, tyrosine kinase inhibitors (TKIs) have become a standard treatment in combating NSCLC. Tepotinib hydrochloride is an orally bioavailable, mesenchymal-epithelial transition (MET) TKI developed mainly for selected NSCLC patients with METex14 skipping mutations. Tepotinib demonstrated durable clinical response in phase II clinical trials, which led to its approval for use in Japan and breakthrough therapy designation and accelerated approval in the U.S. These progresses highlighted tepotinib as a promising candidate for NSCLC patients. This review summarizes the pharmacological profile of tepotinib, preclinical studies and landmark clinical trials of tepotinib. In addition, we share our perspectives on the future direction of tepotinib as a novel anticancer drug.
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Affiliation(s)
- Z-X Wu
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA
| | - J Li
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA and Department of Otolaryngology-Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - S Dong
- Key Laboratory of Medical Electrophysiology of Education Ministry, School of Pharmacy, Southwest Medical University, China and Shenzhen Public Service Platform on Tumor Precision Medicine and Molecular Diagnosis, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - L Lin
- Cell Research Center, Shenzhen Bolun Institute of Biotechnology, Shenzhen, China
| | - C Zou
- Key Laboratory of Medical Electrophysiology of Education Ministry, School of Pharmacy, Southwest Medical University, China and Shenzhen Public Service Platform on Tumor Precision Medicine and Molecular Diagnosis, Southern University of Science and Technology, Shenzhen, Guangdong, China. zouchang.cuhk@gmail
| | - Z-S Chen
- Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John's University, Queens, New York, USA.
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Dong S, Yao T, Shao ZH, Wu YT, Liu Y, Wu JH, Xue TC, Feng YL, Wang SP. [Related factors and interaction on hepatitis C virus infection in patients receiving methadone maintenance treatment in Taiyuan]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:677-682. [PMID: 34814450 DOI: 10.3760/cma.j.cn112338-20201028-01289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To explore the prevalence of hepatitis C virus (HCV) infection, influence factors and interaction on HCV infection in patients receiving methadone maintenance treatment (MMT) in Taiyuan. Methods: Between April-June 2019, three MMT clinics in Taiyuan were selected to conduct a face-to-face questionnaire survey among MMT patients to collect the information about their socio-demographic characteristics, drug use, MMT, sexual behavior and health status. Software EpiData 3.1 was used for real-time double entry to establish the database. Software SAS 9.4 was used to analyze the data, and χ2 test was used for univariate analysis and logistic regression model was used for multivariate and interaction analyses. Results: A total of 903 subjects were surveyed among MMT patients, the male to female ratio of was 7.21∶1(743∶103), and the rate of HCV infection was 12.53% (106/846). After adjusting for the confounding factors, being women (OR=1.936, 95%CI: 1.023-3.662), having sex with drug users (OR=2.073, 95%CI: 1.110-3.871) and injection drug use (OR=7.737, 95%CI: 4.614-12.973) might be the risk factors for HCV infection in patients receiving MMT. The results showed that there were multiplicative interactions among women, having sex with drug user and injection drug use on HCV infection. Conclusions: Being women, having sex with drug user and injection drug use were associated with higher risk for HCV infection in patients receiving MMT in Taiyuan. There were multiplication interactions between being women and having sex with drug user, being female and injection drug use, and having sex with drug use and injection drug use on HCV infection.
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Affiliation(s)
- S Dong
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China Center of Clinical Epidemiology and Evidence Based Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - T Yao
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China Center of Clinical Epidemiology and Evidence Based Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - Z H Shao
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China Center of Clinical Epidemiology and Evidence Based Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - Y T Wu
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China Center of Clinical Epidemiology and Evidence Based Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - Y Liu
- Methadone Maintenance Treatment Clinic,Compulsory Isolation Drug Rehabilitation Center of Shanxi Province, Taiyuan 030001, China
| | - J H Wu
- Methadone Maintenance Treatment Clinic; 109 Hospital of Shanxi Province, Taiyuan 030001, China
| | - T C Xue
- Methadone Maintenance Treatment Clinic, Xinghualing Central Hospital of Shanxi Province, Taiyuan 030000, China
| | - Y L Feng
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China Center of Clinical Epidemiology and Evidence Based Medicine, Shanxi Medical University, Taiyuan 030001, China
| | - S P Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China Center of Clinical Epidemiology and Evidence Based Medicine, Shanxi Medical University, Taiyuan 030001, China
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Dong S, Zhang T, Wu T, Zhang L, Sun H, Dong W, Wang H. Drug utilization of paliperidone in adolescent schizophrenia patients: A retrospective cohort study in China. Eur Psychiatry 2021. [PMCID: PMC9476006 DOI: 10.1192/j.eurpsy.2021.1368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Introduction In China, the indications of paliperidone extended in schizophrenia adolescents (12-17 years) was approved by National Medical Products Administration (NMPA) in 2017. But, the utilization of paliperidone in this group needs to be further investigated. Objectives To assess paliperidone utilization in schizophrenia adolescents. Methods The study employed the electronic medical records (EMRs) database from a psychiatry specialized hospital (PH) and a general hospital (GH), respectively. General information, including birth date, gender, visit date, diagnosis (inpatient and outpatient) with ICD-10 coding, drug characterize, prescription date and dosage, was de-identified and standardized for analysis. Schizophrenia adolescents (ICD-10: F20.x) received at least one prescription of paliperidone between 2018 and 2019 were included in this study. Index date was defined as the date of first identified paliperidone prescription. The patients were followed up until the end of 2019 with the last record, or upon reaching 18 years. The database was analyzed based on days of supply, administration frequency, and daily dose. Results Overall, 112 and 117 eligible patients were included in the present study from PH and GH, respectively. The median drug supply was 179.0 days and 44.0 days, respectively, during which median number of prescriptions patients received was 6.0 and 3.0. Paliperidone was mostly initiated alone (57.1% and 88.9%) with frequency of once daily (97.3% and 88.9%), and the median of average daily dose during follow-up was 5.7 mg/day and 6.0 mg/day, respectively. Conclusions The duration of paliperidone usage was very different in two hospitals, but the dosages in both hospitals were generally agreed with prescribing information.
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Zhang J, Dong S, Zhu Q, Zhao G, Li P, Zhou Q, Yang J, Zhang X, Guan Y, Xia X, Yang X, Zhong W, Wu Y. P59.03 Intratumoral Heterogeneity and Clonal Evolution in Large Non-Small Cell Lung Cancer (>7cm) Delineated by Multiregion Sequencing. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.954] [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: 11/25/2022]
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Zhang J, Zhang M, Fu R, Chu X, Wen Z, Gong Y, Jiang B, Liao R, Dong S, Nie Q, Chen R, Xia X, Yang X, Zhong W, Wu Y. P56.01 Postoperative ctDNA Positive Presents the High-risk of Recurrence in Resectable Non-Small Cell Lung Cancers. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Tang W, Wu M, Bao H, Zhang Y, Zhang J, Su J, Lin J, Xu F, Chen J, Fu R, Chen Y, Wu T, Wu X, Shao Y, Dong S, Nie Q, Yang X, Wu Y, Zhong W. MA13.09 Heterogeneous Genomic Evolution and Immune Microenvironments in Metastatic Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Dong S, Wang Q, Kao YR, Diaz A, Tasset I, Kaushik S, Thiruthuvanathan V, Zintiridou A, Nieves E, Dzieciatkowska M, Reisz JA, Gavathiotis E, D’Alessandro A, Will B, Cuervo AM. Chaperone-mediated autophagy sustains haematopoietic stem-cell function. Nature 2021; 591:117-123. [PMID: 33442062 PMCID: PMC8428053 DOI: 10.1038/s41586-020-03129-z] [Citation(s) in RCA: 123] [Impact Index Per Article: 41.0] [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: 12/28/2019] [Accepted: 12/09/2020] [Indexed: 01/29/2023]
Abstract
The activation of mostly quiescent haematopoietic stem cells (HSCs) is a prerequisite for life-long production of blood cells1. This process requires major molecular adaptations to allow HSCs to meet the regulatory and metabolic requirements for cell division2-4. The mechanisms that govern cellular reprograming upon stem-cell activation, and the subsequent return of stem cells to quiescence, have not been fully characterized. Here we show that chaperone-mediated autophagy (CMA)5, a selective form of lysosomal protein degradation, is involved in sustaining HSC function in adult mice. CMA is required for protein quality control in stem cells and for the upregulation of fatty acid metabolism upon HSC activation. We find that CMA activity in HSCs decreases with age and show that genetic or pharmacological activation of CMA can restore the functionality of old mouse and human HSCs. Together, our findings provide mechanistic insights into a role for CMA in sustaining quality control, appropriate energetics and overall long-term HSC function. Our work suggests that CMA may be a promising therapeutic target for enhancing HSC function in conditions such as ageing or stem-cell transplantation.
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Affiliation(s)
- S Dong
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA
| | - Q Wang
- Department of Cell Biology, Albert Einstein College of Medicine, NY, USA
| | - YR Kao
- Department of Cell Biology, Albert Einstein College of Medicine, NY, USA
| | - A Diaz
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA
| | - I Tasset
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA
| | - S Kaushik
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA
| | - V Thiruthuvanathan
- Department of Cell Biology, Albert Einstein College of Medicine, NY, USA
| | - A Zintiridou
- Department of Cell Biology, Albert Einstein College of Medicine, NY, USA
| | - E Nieves
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA
| | - M Dzieciatkowska
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver – Anschutz Medical Campus, CO, USA
| | - JA Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver – Anschutz Medical Campus, CO, USA
| | - E Gavathiotis
- Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA;,Department of Biochemistry, Albert Einstein College of Medicine, NY, USA;,Department of Medicine (Oncology), Albert Einstein College of Medicine, NY, USA
| | - A D’Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver – Anschutz Medical Campus, CO, USA
| | - B Will
- Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA;,Department of Cell Biology, Albert Einstein College of Medicine, NY, USA;,Department of Medicine (Oncology), Albert Einstein College of Medicine, NY, USA;,Ruth L. and David S. Gottesman Institute for Stem Cell Biology, Albert Einstein College of Medicine, NY, USA,Corresponding authors: Ana Maria Cuervo MD PhD, Dept. Developmental Mol Biol, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, Phone: +1 718 430 2689, , Britta Will PhD, Department of Cell Biology, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, Phone: +1 718 430 3786,
| | - AM Cuervo
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, NY, USA;,Institute for Aging Studies, Albert Einstein College of Medicine, NY, USA;,Corresponding authors: Ana Maria Cuervo MD PhD, Dept. Developmental Mol Biol, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, Phone: +1 718 430 2689, , Britta Will PhD, Department of Cell Biology, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, Phone: +1 718 430 3786,
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Maklar J, Dong S, Beaulieu S, Pincelli T, Dendzik M, Windsor YW, Xian RP, Wolf M, Ernstorfer R, Rettig L. A quantitative comparison of time-of-flight momentum microscopes and hemispherical analyzers for time- and angle-resolved photoemission spectroscopy experiments. Rev Sci Instrum 2020; 91:123112. [PMID: 33379994 DOI: 10.1063/5.0024493] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 11/26/2020] [Indexed: 06/12/2023]
Abstract
Time-of-flight-based momentum microscopy has a growing presence in photoemission studies, as it enables parallel energy- and momentum-resolved acquisition of the full photoelectron distribution. Here, we report table-top extreme ultraviolet time- and angle-resolved photoemission spectroscopy (trARPES) featuring both a hemispherical analyzer and a momentum microscope within the same setup. We present a systematic comparison of the two detection schemes and quantify experimentally relevant parameters, including pump- and probe-induced space-charge effects, detection efficiency, photoelectron count rates, and depth of focus. We highlight the advantages and limitations of both instruments based on exemplary trARPES measurements of bulk WSe2. Our analysis demonstrates the complementary nature of the two spectrometers for time-resolved ARPES experiments. Their combination in a single experimental apparatus allows us to address a broad range of scientific questions with trARPES.
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Affiliation(s)
- J Maklar
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - S Dong
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - S Beaulieu
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - T Pincelli
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - M Dendzik
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - Y W Windsor
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - R P Xian
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - M Wolf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - R Ernstorfer
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| | - L Rettig
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
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Beaulieu S, Schusser J, Dong S, Schüler M, Pincelli T, Dendzik M, Maklar J, Neef A, Ebert H, Hricovini K, Wolf M, Braun J, Rettig L, Minár J, Ernstorfer R. Revealing Hidden Orbital Pseudospin Texture with Time-Reversal Dichroism in Photoelectron Angular Distributions. Phys Rev Lett 2020; 125:216404. [PMID: 33274965 DOI: 10.1103/physrevlett.125.216404] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 10/13/2020] [Indexed: 06/12/2023]
Abstract
We performed angle-resolved photoemission spectroscopy (ARPES) of bulk 2H-WSe_{2} for different crystal orientations linked to each other by time-reversal symmetry. We introduce a new observable called time-reversal dichroism in photoelectron angular distributions (TRDAD), which quantifies the modulation of the photoemission intensity upon effective time-reversal operation. We demonstrate that the hidden orbital pseudospin texture leaves its imprint on TRDAD, due to multiple orbital interference effects in photoemission. Our experimental results are in quantitative agreement with both the tight-binding model and state-of-the-art fully relativistic calculations performed using the one-step model of photoemission. While spin-resolved ARPES probes the spin component of entangled spin-orbital texture in multiorbital systems, we unambiguously demonstrate that TRDAD reveals its orbital pseudospin texture counterpart.
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Affiliation(s)
- S Beaulieu
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - J Schusser
- Laboratoire de Physique des Matériaux et Surfaces, CY Cergy Paris Université, 95031 Cergy-Pontoise, France
- New Technologies-Research Center, University of West Bohemia, 30614 Pilsen, Czech Republic
| | - S Dong
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - M Schüler
- Stanford Institute for Materials and Energy Sciences (SIMES), SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - T Pincelli
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - M Dendzik
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
- Department of Applied Physics, KTH Royal Institute of Technology, Hannes Alfvéns väg 12, 114 19 Stockholm, Sweden
| | - J Maklar
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - A Neef
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - H Ebert
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 11, 81377 München, Germany
| | - K Hricovini
- Laboratoire de Physique des Matériaux et Surfaces, CY Cergy Paris Université, 95031 Cergy-Pontoise, France
- LIDYL, CEA, CNRS, Université Paris-Saclay, CEA Saclay, F-91191 Gif-sur-Yvette Cedex, France
| | - M Wolf
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - J Braun
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 11, 81377 München, Germany
| | - L Rettig
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - J Minár
- New Technologies-Research Center, University of West Bohemia, 30614 Pilsen, Czech Republic
| | - R Ernstorfer
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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Huang Q, Hu S, Ran FM, Liang TJ, Wang HX, Chen CC, Zhang J, Ou WL, Dong S, Cai Q, Luo CG, Qian Y. Asymptomatic COVID-19 infection in patients with cancer at a cancer-specialized hospital in Wuhan, China - Preliminary results. Eur Rev Med Pharmacol Sci 2020; 24:9760-9764. [PMID: 33015823 DOI: 10.26355/eurrev_202009_23070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Patients with cancer are usually immunosuppressive and susceptible to COVID-19 infection. Asymptomatic COVID-19 cases are infective and cannot be identified by symptom-based screening. There is an urgent need to control virus spread by asymptomatic carriers at cancer centres. We aim to describe the characteristics, screening methods, and outcomes of cancer patients with asymptomatic COVID-19 infection and to further explore anti-tumour treatment for this population. PATIENTS AND METHODS We reviewed patients with cancer who were admitted to Hubei Cancer Hospital in Wuhan from February 1, 2020, to April 4, 2020. We collected demographic data, laboratory findings, treatment information, nucleic acid and serum test results, chest computed tomography (CT) information and survival status of cancer patients diagnosed with asymptomatic COVID-19 infection. RESULTS A total of 16 cancer patients with asymptomatic COVID-19 infection were confirmed. The most common cancer type was breast cancer. The blood cell counts of most patients were in the normal range. Lymphocytes of 100% of asymptomatic carriers were in the normal range. Thirteen (81.3%) patients were positive for virus-specific IgM antibodies, and three (18.8%) were positive by PCR; only one (6.3%) patient showed novel coronavirus pneumonia features on CT. Three (18.3%) patients died, and the cause of death was considered malignancy caused by delaying anti-tumour treatment. CONCLUSIONS Our study shows that the lymphocytes of 100% of asymptomatic carriers were in the normal range. This result indicates that the host immunity of asymptomatic carriers is not significantly disrupted by COVID-19. Single PCR detection is not sufficient to screen among asymptomatic individuals, and a combination of PCR tests, serological tests and CT is of great importance. Unless the tumour is life-threatening or rapidly progressing, we advise restarting active anti-tumour therapy after PCR tests become negative.
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Affiliation(s)
- Q Huang
- Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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Okpechi S, Dong S, Yousefi H, Harman J, Nguyen T, Guidry J, Alahari S. Small molecule compound induces cell cycle arrest and subsequent apoptosis in an in-vitro model of triple negative breast cancer. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)31143-6] [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: 11/25/2022]
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Zhang Y, Huang Z, Dong S, Liu Z, Liu Y, Tang L, Cheng T, Zhou X. Evaluation of Cell's Passability in the ECM Network. Biophys J 2020; 119:1056-1064. [PMID: 32891186 DOI: 10.1016/j.bpj.2020.07.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/17/2020] [Accepted: 07/27/2020] [Indexed: 11/28/2022] Open
Abstract
The microstructure of the extracellular matrix (ECM) plays a key role in affecting cell migration, especially nonproteolytic migration. It is difficult, however, to measure some properties of the ECM, such as stiffness and the passability for cell migration. On the basis of a network model of collagen fiber in the ECM, which has been well applied to simulate mechanical behaviors such as the stress-strain relationship, damage, and failure, we proposed a series of methods to study the microstructural properties containing pore size and pore stiffness and to search for the possible migration paths for cells. Finally, with a given criterion, we quantitatively evaluated the passability of the ECM network for cell migration. The fiber network model with a microstructure and the analysis method presented in this study further our understanding of and ability to evaluate the properties of an ECM network.
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Affiliation(s)
- Yongrou Zhang
- Guangdong Key Laboratory of Modern Control Technology, Guangdong Institute of Intelligent Manufacturing, Guangzhou, Guangdong, China; School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, China
| | - Zetao Huang
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Shoubin Dong
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Zejia Liu
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, China.
| | - Yiping Liu
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, China
| | - Liqun Tang
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, China; State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, Guangdong, China
| | - Taobo Cheng
- Guangdong Key Laboratory of Modern Control Technology, Guangdong Institute of Intelligent Manufacturing, Guangzhou, Guangdong, China
| | - Xuefeng Zhou
- Guangdong Key Laboratory of Modern Control Technology, Guangdong Institute of Intelligent Manufacturing, Guangzhou, Guangdong, China.
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Yang Z, Dong S. HAGERec: Hierarchical Attention Graph Convolutional Network Incorporating Knowledge Graph for Explainable Recommendation. Knowl Based Syst 2020. [DOI: 10.1016/j.knosys.2020.106194] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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37
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Kersalé M, Meinen CS, Perez RC, Le Hénaff M, Valla D, Lamont T, Sato OT, Dong S, Terre T, van Caspel M, Chidichimo MP, van den Berg M, Speich S, Piola AR, Campos EJD, Ansorge I, Volkov DL, Lumpkin R, Garzoli SL. Highly variable upper and abyssal overturning cells in the South Atlantic. Sci Adv 2020; 6:eaba7573. [PMID: 32821826 PMCID: PMC7406378 DOI: 10.1126/sciadv.aba7573] [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: 01/02/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
The Meridional Overturning Circulation (MOC) is a primary mechanism driving oceanic heat redistribution on Earth, thereby affecting Earth's climate and weather. However, the full-depth structure and variability of the MOC are still poorly understood, particularly in the South Atlantic. This study presents unique multiyear records of the oceanic volume transport of both the upper (<~3100 meters) and abyssal (>~3100 meters) overturning cells based on daily moored measurements in the South Atlantic at 34.5°S. The vertical structure of the time-mean flows is consistent with the limited historical observations. Both the upper and abyssal cells exhibit a high degree of variability relative to the temporal means at time scales, ranging from a few days to a few weeks. Observed variations in the abyssal flow appear to be largely independent of the flow in the overlying upper cell. No meaningful trends are detected in either cell.
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Affiliation(s)
- M. Kersalé
- Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, USA
- NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, USA
| | - C. S. Meinen
- NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, USA
| | - R. C. Perez
- NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, USA
| | - M. Le Hénaff
- Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, USA
- NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, USA
| | - D. Valla
- Servicio de Hidrografía Naval, Buenos Aires, Argentina
| | - T. Lamont
- Oceans and Coasts Research Branch, Department of Environmental Affairs, Cape Town, South Africa
- Department of Oceanography, University of Cape Town, Rondebosch 7701, South Africa
| | - O. T. Sato
- Oceanographic Institute, University of São Paulo, São Paulo, Brazil
| | - S. Dong
- NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, USA
| | - T. Terre
- IFREMER, University of Brest, CNRS, IRD, Laboratoire d'Océanographie Physique et Spatiale (LOPS), IUEM, Plouzané, France
| | - M. van Caspel
- Oceanographic Institute, University of São Paulo, São Paulo, Brazil
| | - M. P. Chidichimo
- Servicio de Hidrografía Naval, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
- Instituto Franco-Argentino sobre Estudio del Clima y sus Impactos (UMI-IFAECI/CNRS-CONICET-UBA), Buenos Aires, Argentina
| | - M. van den Berg
- Oceans and Coasts Research Branch, Department of Environmental Affairs, Cape Town, South Africa
| | - S. Speich
- Laboratoire de Météorologie Dynamique–IPSL, Ecole Normale Supérieure, Paris, France
| | - A. R. Piola
- Servicio de Hidrografía Naval, Buenos Aires, Argentina
- Instituto Franco-Argentino sobre Estudio del Clima y sus Impactos (UMI-IFAECI/CNRS-CONICET-UBA), Buenos Aires, Argentina
- Universidad de Buenos Aires, Buenos Aires, Argentina
| | - E. J. D. Campos
- Oceanographic Institute, University of São Paulo, São Paulo, Brazil
- Department of Biology, Chemistry and Environmental Sciences, School of Arts and Sciences, American University of Sharjah, Sharjah, United Arab Emirates
| | - I. Ansorge
- Department of Oceanography, University of Cape Town, Rondebosch 7701, South Africa
| | - D. L. Volkov
- Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, USA
- NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, USA
| | - R. Lumpkin
- NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, USA
| | - S. L. Garzoli
- Cooperative Institute for Marine and Atmospheric Studies, University of Miami, Miami, FL, USA
- NOAA Atlantic Oceanographic and Meteorological Laboratory, Miami, FL, USA
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Abstract
Background With the rapid development of sequencing technologies, collecting diverse types of cancer omics data become more cost-effective. Many computational methods attempted to represent and fuse multiple omics into a comprehensive view of cancer. However, different types of omics are related and heterogeneous. Most of the existing methods do not consider the difference between omics, so the biological knowledge of individual omics may not be fully excavated. And for a given task (e.g. predicting overall survival), these methods prefer to use sample similarity or domain knowledge to learn a more reasonable representation of omics, but it’s not enough. Methods For the purpose of learning more useful representation for individual omics and fusing them to improve the prediction ability, we proposed an autoencoder-based method named MOSAE (Multi-omics Supervised Autoencoder). In our method, a specific autoencoder were designed for each omics according to their size of dimension to generate omics-specific representations. Then, a supervised autoencoder was constructed based on specific autoencoder by using labels to enforce each specific autoencoder to learn both omics-specific and task-specific representations. Finally, representations of different omics that generate from supervised autoencoders were fused in a traditional but powerful way, and the fused representation was used for subsequent predictive tasks. Results We applied our method over TCGA Pan-Cancer dataset to predict four different clinical outcome endpoints (OS, PFI, DFI, and DSS). Compared with traditional and state-of-the-art methods, MOSAE achieved better predictive performance. We also tested the effects of each improvement, which all have a positive effect on predictive performance. Conclusions Predicting clinical outcome endpoints are very important for precision medicine and personalized medicine. And multi-omics fusion is an effective way to solve this problem. MOSAE is a powerful multi-omics fusion method, which can generate both omics-specific and task-specific representation for given endpoint predictive tasks and improve the predictive performance.
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Affiliation(s)
- Kaiwen Tan
- Communication & Computer Network Lab of Guangdong, School of Computer Science & Engineering, South China University of Technology, Wushan Road, Guangzhou, 381, China
| | - Weixian Huang
- Communication & Computer Network Lab of Guangdong, School of Computer Science & Engineering, South China University of Technology, Wushan Road, Guangzhou, 381, China
| | - Jinlong Hu
- Communication & Computer Network Lab of Guangdong, School of Computer Science & Engineering, South China University of Technology, Wushan Road, Guangzhou, 381, China
| | - Shoubin Dong
- Communication & Computer Network Lab of Guangdong, School of Computer Science & Engineering, South China University of Technology, Wushan Road, Guangzhou, 381, China.
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Gao M, Chen W, Dong S, Chen Y, Zhang Q, Sun H, Zhang Y, Wu W, Pan Z, Gao S, Lin L, Shen J, Tan L, Wang G, Zhang W. Assessing the impact of drinking water iodine concentrations on the iodine intake of Chinese pregnant women living in areas with restricted iodized salt supply. Eur J Nutr 2020; 60:1023-1030. [PMID: 32577887 DOI: 10.1007/s00394-020-02308-y] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 06/15/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE The supply of non-iodized salt and the water improvement project have been conducted to reduce the iodine concentration in drinking water in areas with elevated water iodine. We aimed to assess the impact of water iodine concentration (WIC) on the iodine intake of pregnant women in areas with restricted iodized salt supply, and determine the cutoff values of WIC in areas with non-iodized salt supply. METHODS Overall, 534 pregnant women who attended routine antenatal outpatient visits in Zibo Maternal and Child Health Hospital in Gaoqing County were recruited. The 24-h urine iodine excretion (UIE) in 534 samples and the iodine concentration in 534 drinking water samples were estimated. Urinary iodine excretion, daily iodine intake, and daily iodine intake from drinking water (WII) were calculated. The relationship between WIC and daily iodine take was analyzed. RESULTS The median WIC, spot urine iodine concentration (UIC), and 24-h UIE were 17 (6, 226) μg/L, 145 (88, 267) μg/L, and 190 (110, 390) μg/day, respectively. A significant positive correlation was found between WIC and UIE (R2 = 0.265, p < 0.001) and UIC (R2 = 0.261, p < 0.001). The contribution rate of WII to total iodine intake increased from 3.0% in the group with WIC of < 10 μg/L to 45.7% in the group with WIC of 50-99 μg/L. CONCLUSION The iodine content in drinking water is the major iodine source in pregnant women living in high-water iodine areas where iodized salt supply is restricted. The contribution rate of daily iodine intake from drinking water increases with the increase in water iodine concentration.
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Affiliation(s)
- M Gao
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - W Chen
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China.,Department of Endocrinology and Metabolism, Tianjin Medical University General Hospital, Tianjin, China
| | - S Dong
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Y Chen
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Q Zhang
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - H Sun
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Y Zhang
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - W Wu
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Z Pan
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - S Gao
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - L Lin
- Tianjin Institution of Endocrinology, Tianjin Medical University, Tianjin, China
| | - J Shen
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - L Tan
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China
| | - G Wang
- The Center for Disease Control and Prevention of Gaoqing County, Gaoqing, China
| | - W Zhang
- The Department of Nutrition and Food Hygiene, School of Public Health, Tianjin Medical University, Tianjin, China. .,Department of Endocrinology and Metabolism, Tianjin Medical University General Hospital, Tianjin, China. .,Department of Healthcare and Medical, Tianjin Medical University General Hospital, Tianjin, China. .,Tianjin Key Laboratory of Environment, Nutrition and Public Health, Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China.
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Shao ZH, Shi J, Yao T, Feng D, Dong S, Shi S, Feng YL, Zhang YW, Wang SP. [Characteristics of methadone maintenance treatment clinic patients and influencing factors for HBsAg positivity based on Bayesian network model]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:331-336. [PMID: 32294830 DOI: 10.3760/cma.j.issn.0254-6450.2020.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the characteristics and explore the influencing factors of HBsAg positivity in methadone maintenance treatment (MMT) clinic patients. Methods: A face to face interview and medical record review were conducted in 1 040 patients at three MMT clinics in Guangxi from September to November in 2014. The questionnaire information included general demographic characteristics, drug use history, MMT status, sexual behaviors, and health status, etc. Blood samples were collected from the patients at the same time for the detections of the level of HBsAg, anti-HBs and anti-HCV. By using χ(2) test, unconditional logistic regression model and Bayesian network model the influencing factors for HBsAg positivity in MMT clinic patients and the complex network relationship among these factors were explored. Results: A total of 1 031 MMT clinic patients were surveyed, the HBsAg positive rate was 11.35% (117/1 031). The anti-HCV positive rate was 71.77% (740/1 031), among the anti-HCV positive patients, the HBsAg positive rate was 10.27% (76/740). After adjusting for the confounding factors, anti-HBs positive persons might not be HBsAg positive (OR=0.05, 95%CI: 0.03-0.09), and anti-HCV positive persons might not be HBsAg positive too (OR=0.30, 95%CI: 0.17-0.52) compared with anti-HBs negative and anti-HCV negative persons, respectively. The persons with family history of hepatitis B virus infection were more likely to be HBsAg positive compared those with no such family history (OR=5.30, 95%CI: 2.68-10.52). Bayesian network model analysis results showed that family history of hepatitis B virus infection and anti-HBs were directly related with HBsAg positivity. Anti-HCV, intravenous drug use in the past three months and other drug using during treatment were indirectly related with HBsAg positivity. Conclusions: Anti-HBs, family history of hepatitis B virus infection, anti-HCV, intravenous drug use in past three months and other drug use during treatment were related with the HBsAg positivity in MMT clinic patients. So, it is necessary to enhance health education, improve health awareness and decrease high risk behaviors to reduce the rate of HBV infection.
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Affiliation(s)
- Z H Shao
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J Shi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - T Yao
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - D Feng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - S Dong
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - S Shi
- Methadone Maintenance Treatment Clinic, Nanning Red Cross Hospital, Nanning 530012, China
| | - Y L Feng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y W Zhang
- Division of Environment Health Sciences, School of Public Health, Yale University, New Haven, Connecticut 06520, USA
| | - S P Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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41
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Liu X, Fan J, Dong S. Document-Level Biomedical Relation Extraction Leveraging Pretrained Self-Attention Structure and Entity Replacement: Algorithm and Pretreatment Method Validation Study. JMIR Med Inform 2020; 8:e17644. [PMID: 32469325 PMCID: PMC7314385 DOI: 10.2196/17644] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/02/2020] [Accepted: 03/19/2020] [Indexed: 01/26/2023] Open
Abstract
Background The most current methods applied for intrasentence relation extraction in the biomedical literature are inadequate for document-level relation extraction, in which the relationship may cross sentence boundaries. Hence, some approaches have been proposed to extract relations by splitting the document-level datasets through heuristic rules and learning methods. However, these approaches may introduce additional noise and do not really solve the problem of intersentence relation extraction. It is challenging to avoid noise and extract cross-sentence relations. Objective This study aimed to avoid errors by dividing the document-level dataset, verify that a self-attention structure can extract biomedical relations in a document with long-distance dependencies and complex semantics, and discuss the relative benefits of different entity pretreatment methods for biomedical relation extraction. Methods This paper proposes a new data preprocessing method and attempts to apply a pretrained self-attention structure for document biomedical relation extraction with an entity replacement method to capture very long-distance dependencies and complex semantics. Results Compared with state-of-the-art approaches, our method greatly improved the precision. The results show that our approach increases the F1 value, compared with state-of-the-art methods. Through experiments of biomedical entity pretreatments, we found that a model using an entity replacement method can improve performance. Conclusions When considering all target entity pairs as a whole in the document-level dataset, a pretrained self-attention structure is suitable to capture very long-distance dependencies and learn the textual context and complicated semantics. A replacement method for biomedical entities is conducive to biomedical relation extraction, especially to document-level relation extraction.
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Affiliation(s)
- Xiaofeng Liu
- Communication and Computer Network Key Laboratory of Guangdong, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Jianye Fan
- Communication and Computer Network Key Laboratory of Guangdong, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Shoubin Dong
- Communication and Computer Network Key Laboratory of Guangdong, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
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Hu J, Cao L, Li T, Liao B, Dong S, Li P. Interpretable Learning Approaches in Resting-State Functional Connectivity Analysis: The Case of Autism Spectrum Disorder. Comput Math Methods Med 2020; 2020:1394830. [PMID: 32508974 PMCID: PMC7251440 DOI: 10.1155/2020/1394830] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 05/05/2020] [Indexed: 11/17/2022]
Abstract
Deep neural networks have recently been applied to the study of brain disorders such as autism spectrum disorder (ASD) with great success. However, the internal logics of these networks are difficult to interpret, especially with regard to how specific network architecture decisions are made. In this paper, we study an interpretable neural network model as a method to identify ASD participants from functional magnetic resonance imaging (fMRI) data and interpret results of the model in a precise and consistent manner. First, we propose an interpretable fully connected neural network (FCNN) to classify two groups, ASD versus healthy controls (HC), based on input data from resting-state functional connectivity (rsFC) between regions of interests (ROIs). The proposed FCNN model is a piecewise linear neural network (PLNN) which uses piecewise linear function LeakyReLU as its activation function. We experimentally compared the FCNN model against widely used classification models including support vector machine (SVM), random forest, and two new classes of deep neural network models in a large dataset containing 871 subjects from ABIDE I database. The results show the proposed FCNN model achieves the highest classification accuracy. Second, we further propose an interpreting method which could explain the trained model precisely with a precise linear formula for each input sample and decision features which contributed most to the classification of ASD versus HC participants in the model. We also discuss the implications of our proposed approach for fMRI data classification and interpretation.
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Affiliation(s)
- Jinlong Hu
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
- Communication and Computer Network Laboratory of Guangdong, South China University of Technology, Guangzhou, China
| | - Lijie Cao
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
- Communication and Computer Network Laboratory of Guangdong, South China University of Technology, Guangzhou, China
| | - Tenghui Li
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
- Communication and Computer Network Laboratory of Guangdong, South China University of Technology, Guangzhou, China
| | - Bin Liao
- College of Mathematics and Informatics, South China Agricultural University, Guangzhou, China
| | - Shoubin Dong
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
- Communication and Computer Network Laboratory of Guangdong, South China University of Technology, Guangzhou, China
| | - Ping Li
- Faculty of Humanities, The Hong Kong Polytechnic University, Hong Kong, China
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Fu J, Ke B, Dong S. LCQS: an efficient lossless compression tool of quality scores with random access functionality. BMC Bioinformatics 2020; 21:109. [PMID: 32183707 PMCID: PMC7079445 DOI: 10.1186/s12859-020-3428-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Accepted: 02/24/2020] [Indexed: 12/02/2022] Open
Abstract
Background Advanced sequencing machines dramatically speed up the generation of genomic data, which makes the demand of efficient compression of sequencing data extremely urgent and significant. As the most difficult part of the standard sequencing data format FASTQ, compression of the quality score has become a conundrum in the development of FASTQ compression. Existing lossless compressors of quality scores mainly utilize specific patterns generated by specific sequencer and complex context modeling techniques to solve the problem of low compression ratio. However, the main drawbacks of these compressors are the problem of weak robustness which means unstable or even unavailable results of sequencing files and the problem of slow compression speed. Meanwhile, some compressors attempt to construct a fine-grained index structure to solve the problem of slow random access decompression speed. However, they solve the problem at the sacrifice of compression speed and at the expense of large index files, which makes them inefficient and impractical. Therefore, an efficient lossless compressor of quality scores with strong robustness, high compression ratio, fast compression and random access decompression speed is urgently needed and of great significance. Results In this paper, based on the idea of maximizing the use of hardware resources, LCQS, a lossless compression tool specialized for quality scores, was proposed. It consists of four sequential processing steps: partitioning, indexing, packing and parallelizing. Experimental results reveal that LCQS outperforms all the other state-of-the-art compressors on all criteria except for the compression speed on the dataset SRR1284073. Furthermore, LCQS presents strong robustness on all the test datasets, with its acceleration ratios of compression speed increasing by up to 29.1x, its file size reducing by up to 28.78%, and its random access decompression speed increasing by up to 2.1x. Additionally, LCQS also exhibits strong scalability. That is, the compression speed increases almost linearly as the size of input dataset increases. Conclusion The ability to handle all different kinds of quality scores and superiority in compression ratio and compression speed make LCQS a high-efficient and advanced lossless quality score compressor, along with its strength of fast random access decompression. Our tool LCQS can be downloaded from https://github.com/SCUT-CCNL/LCQSand freely available for non-commercial usage.
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Affiliation(s)
- Jiabing Fu
- School of Computer Science & Engineering, South China University of Technology, Wushan Road, Guangzhou, 510006, China.,Communication & Computer Network Lab of Guangdong, South China University of Technology, Wushan Road, Guangzhou, 510006, China
| | - Bixin Ke
- School of Computer Science & Engineering, South China University of Technology, Wushan Road, Guangzhou, 510006, China.,Communication & Computer Network Lab of Guangdong, South China University of Technology, Wushan Road, Guangzhou, 510006, China
| | - Shoubin Dong
- School of Computer Science & Engineering, South China University of Technology, Wushan Road, Guangzhou, 510006, China. .,Communication & Computer Network Lab of Guangdong, South China University of Technology, Wushan Road, Guangzhou, 510006, China.
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Dong S, Nie H, Li D, Cai Z, Sun X, Huo Z, Yan X. Molecular cloning and characterization of Y-box gene (Rpybx) from Manila clam and its expression analysis in different strains under low-temperature stress. Anim Genet 2020; 51:430-438. [PMID: 32091145 DOI: 10.1111/age.12919] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2020] [Indexed: 12/28/2022]
Abstract
Manila clam, Ruditapes philippinarum, is an economically important marine bivalve species. Y-box proteins are members of the cold shock proteins family and highly conserved from bacteria to humans. In this study, a novel Y-box gene (Rpybx) was cloned from the Manila clam and gene expression profiling was performed on three shell color strains (white, zebra and white zebra) and two wild populations (Southern and Northern) of R. philippinarum. The complete ORF length of Rpybx is 1367 bp, encoding 253 amino acids residues. Based on the amino acid sequence analysis and phylogenetic analysis, the Rpybx gene was identified as a member of the invertebrate Y-box proteins family. Rpybx has a similar tertiary structure to human Y-box protein YB-1. The Rpybx mRNA levels were analyzed by qPCR under acute and gradually varied cold stress. Under acute low-temperature stress, the expression of Rpybx mRNA in gills and hepatopancreas was significantly increased in all selected strains and populations (P < 0.05). The Northern population showed the lowest relative expression level of Rpybx. The expressions of Rpybx were greatly upregulated in gills and hepatopancreas of different stains and populations at 5 or -2°C under gradually varied temperature stress (P < 0.05). The results shed light on the biological function of the Rpybx gene in defending against low-temperature challenge and further exploring the molecular mechanism of cold tolerance and resistance in R. philippinarum.
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Affiliation(s)
- S Dong
- College of Fisheries and Life Science, Engineering and Technology Research Center of Shellfish Breeding of Liaoning Province, Dalian Ocean University, Dalian, 116023, China
| | - H Nie
- College of Fisheries and Life Science, Engineering and Technology Research Center of Shellfish Breeding of Liaoning Province, Dalian Ocean University, Dalian, 116023, China
| | - D Li
- College of Fisheries and Life Science, Engineering and Technology Research Center of Shellfish Breeding of Liaoning Province, Dalian Ocean University, Dalian, 116023, China
| | - Z Cai
- College of Fisheries and Life Science, Engineering and Technology Research Center of Shellfish Breeding of Liaoning Province, Dalian Ocean University, Dalian, 116023, China
| | - X Sun
- College of Fisheries and Life Science, Engineering and Technology Research Center of Shellfish Breeding of Liaoning Province, Dalian Ocean University, Dalian, 116023, China
| | - Z Huo
- College of Fisheries and Life Science, Engineering and Technology Research Center of Shellfish Breeding of Liaoning Province, Dalian Ocean University, Dalian, 116023, China
| | - X Yan
- College of Fisheries and Life Science, Engineering and Technology Research Center of Shellfish Breeding of Liaoning Province, Dalian Ocean University, Dalian, 116023, China
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Dong S, Aguirre-Hernandez C, Scrivo A, Eliscovich C, Arias E, Bravo-Cordero JJ, Cuervo AM. Monitoring spatiotemporal changes in chaperone-mediated autophagy in vivo. Nat Commun 2020; 11:645. [PMID: 32005807 PMCID: PMC6994528 DOI: 10.1038/s41467-019-14164-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Accepted: 12/06/2019] [Indexed: 02/07/2023] Open
Abstract
Autophagy malfunctioning occurs in multiple human disorders, making attractive the idea of chemically modulating it with therapeutic purposes. However, for many types of autophagy, a clear understanding of tissue-specific differences in their activity and regulation is missing because of lack of methods to monitor these processes in vivo. Chaperone-mediated autophagy (CMA) is a selective type of autophagy that until now has only been studied in vitro and not in the tissue context at single cell resolution. Here, we develop a transgenic reporter mouse that allows dynamic measurement of CMA activity in vivo using image-based procedures. We identify previously unknown spatial and temporal differences in CMA activity in multiple organs and in response to stress. We illustrate the versatility of this model for monitoring CMA in live animals, organotypic cultures and cell cultures from these mice, and provide practical examples of multiorgan response to drugs that modulate CMA.
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Affiliation(s)
- S Dong
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - C Aguirre-Hernandez
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Department of Medicine, Division of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, 10029, NY, USA
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, 10029, NY, USA
| | - A Scrivo
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - C Eliscovich
- Department of Medicine Marion Liver Research Center, Albert Einstein College of Medicine, Bronx, 10461, NY, USA
| | - E Arias
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
- Department of Medicine Marion Liver Research Center, Albert Einstein College of Medicine, Bronx, 10461, NY, USA.
| | - J J Bravo-Cordero
- Department of Medicine, Division of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, 10029, NY, USA.
- The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, 10029, NY, USA.
| | - A M Cuervo
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
- Department of Medicine, Division of Hematology and Medical Oncology, Icahn School of Medicine at Mount Sinai, New York, 10029, NY, USA.
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Fan J, Dong S, Wang B. Variant-Kudu: An Efficient Tool kit Leveraging Distributed Bitmap Index for Analysis of Massive Genetic Variation Datasets. J Comput Biol 2020; 27:1350-1360. [PMID: 31904999 DOI: 10.1089/cmb.2019.0344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The storage and analysis of massive genetic variation datasets in variant call format (VCF) become a great challenge with the rapid growth of genetic variation data in recent years. Traditional single process based tool kits become increasingly inefficient when analyzing massive genetic variation data. While emerging distributed storage technology such as Apache Kudu offers attractive solution, it is demanded to develop distributed storage tool kit for VCF dataset. In this article, we present Variant-Kudu, an efficient genome tool kit for storing and analyzing massive genetic variation datasets. Based on a new distributed scheme, the genetic variation data would be segmented and stored in Kudu on multinode. With this scheme, data can be randomly accessed at low latency and scanned efficiently. Aiming at reducing the queries' execution time, a strategy of distributed bitmap index is proposed and a parallel query method is designed, which expedite analyses of massive genetic variation data. Variant-Kudu is a scalable tool kit to analyze massive genetic variation datasets, and our experiments demonstrate that Variant-Kudu achieves high performance on a multinode cluster.
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Affiliation(s)
- Jianye Fan
- Communication and Computer Network Lab of Guangdong, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Shoubin Dong
- Communication and Computer Network Lab of Guangdong, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Bo Wang
- Communication and Computer Network Lab of Guangdong, School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
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Dong S, Unger J, Bryan J, Su Q, Grobe R. Symbiotic versus nonsymbiotic optimization for spatial and temporal degrees of freedom in pair creation. Phys Rev E 2020; 101:013310. [PMID: 32069577 DOI: 10.1103/physreve.101.013310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Indexed: 06/10/2023]
Abstract
The field-induced decay of the quantum vacuum state associated with the creation of electron-positron pairs can be caused independently by either multiphoton transitions or by tunneling processes. The first mechanism is usually induced by appropriate temporal variations of the external field while the second (Schwinger-like) process occurs if a static but spatially dependent electric field is of supercritical strength. The ultimate goal is to construct an optimal space-time profile of an electromagnetic field that can maximize the creation of particle pairs. The simultaneous optimization of parameters that characterize the spatial and temporal features of both fields suggests that the optimal two-field configuration can be remarkably similar to that predicted from two independent optimizations for the spatial and temporal fields separately.
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Affiliation(s)
- S Dong
- Key Laboratory for Laser Plasmas, School of Physics and Astronomy, Collaborative Innovation Center of IFSA, Shanghai Jiao Tong University, Shanghai 200240, China
- Intense Laser Physics Theory Unit and Department of Physics Illinois State University, Normal, Illinois 61790-4560, USA
| | - J Unger
- Intense Laser Physics Theory Unit and Department of Physics Illinois State University, Normal, Illinois 61790-4560, USA
| | - J Bryan
- Intense Laser Physics Theory Unit and Department of Physics Illinois State University, Normal, Illinois 61790-4560, USA
| | - Q Su
- Intense Laser Physics Theory Unit and Department of Physics Illinois State University, Normal, Illinois 61790-4560, USA
| | - R Grobe
- Intense Laser Physics Theory Unit and Department of Physics Illinois State University, Normal, Illinois 61790-4560, USA
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Kutnyakhov D, Xian RP, Dendzik M, Heber M, Pressacco F, Agustsson SY, Wenthaus L, Meyer H, Gieschen S, Mercurio G, Benz A, Bühlman K, Däster S, Gort R, Curcio D, Volckaert K, Bianchi M, Sanders C, Miwa JA, Ulstrup S, Oelsner A, Tusche C, Chen YJ, Vasilyev D, Medjanik K, Brenner G, Dziarzhytski S, Redlin H, Manschwetus B, Dong S, Hauer J, Rettig L, Diekmann F, Rossnagel K, Demsar J, Elmers HJ, Hofmann P, Ernstorfer R, Schönhense G, Acremann Y, Wurth W. Time- and momentum-resolved photoemission studies using time-of-flight momentum microscopy at a free-electron laser. Rev Sci Instrum 2020; 91:013109. [PMID: 32012554 DOI: 10.1063/1.5118777] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 11/30/2019] [Indexed: 06/10/2023]
Abstract
Time-resolved photoemission with ultrafast pump and probe pulses is an emerging technique with wide application potential. Real-time recording of nonequilibrium electronic processes, transient states in chemical reactions, or the interplay of electronic and structural dynamics offers fascinating opportunities for future research. Combining valence-band and core-level spectroscopy with photoelectron diffraction for electronic, chemical, and structural analyses requires few 10 fs soft X-ray pulses with some 10 meV spectral resolution, which are currently available at high repetition rate free-electron lasers. We have constructed and optimized a versatile setup commissioned at FLASH/PG2 that combines free-electron laser capabilities together with a multidimensional recording scheme for photoemission studies. We use a full-field imaging momentum microscope with time-of-flight energy recording as the detector for mapping of 3D band structures in (kx, ky, E) parameter space with unprecedented efficiency. Our instrument can image full surface Brillouin zones with up to 7 Å-1 diameter in a binding-energy range of several eV, resolving about 2.5 × 105 data voxels simultaneously. Using the ultrafast excited state dynamics in the van der Waals semiconductor WSe2 measured at photon energies of 36.5 eV and 109.5 eV, we demonstrate an experimental energy resolution of 130 meV, a momentum resolution of 0.06 Å-1, and a system response function of 150 fs.
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Affiliation(s)
- D Kutnyakhov
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - R P Xian
- Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - M Dendzik
- Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - M Heber
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - F Pressacco
- Physics Department and Centre for Free-Electron Laser Science (CFEL), University of Hamburg, 22761 Hamburg, Germany
| | - S Y Agustsson
- Institut für Physik, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
| | - L Wenthaus
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - H Meyer
- Physics Department and Centre for Free-Electron Laser Science (CFEL), University of Hamburg, 22761 Hamburg, Germany
| | - S Gieschen
- Physics Department and Centre for Free-Electron Laser Science (CFEL), University of Hamburg, 22761 Hamburg, Germany
| | - G Mercurio
- Physics Department and Centre for Free-Electron Laser Science (CFEL), University of Hamburg, 22761 Hamburg, Germany
| | - A Benz
- Physics Department and Centre for Free-Electron Laser Science (CFEL), University of Hamburg, 22761 Hamburg, Germany
| | - K Bühlman
- Laboratorium für Festkörperphysik, ETH Zürich, 8093 Zürich, Switzerland
| | - S Däster
- Laboratorium für Festkörperphysik, ETH Zürich, 8093 Zürich, Switzerland
| | - R Gort
- Laboratorium für Festkörperphysik, ETH Zürich, 8093 Zürich, Switzerland
| | - D Curcio
- Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - K Volckaert
- Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - M Bianchi
- Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - Ch Sanders
- Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell OX11 0QX, United Kingdom
| | - J A Miwa
- Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - S Ulstrup
- Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - A Oelsner
- Surface Concept GmbH, 55124 Mainz, Germany
| | - C Tusche
- Forschungszentrum Jülich GmbH, Peter Grünberg Institut (PGI-6), 52428 Jülich, Germany
| | - Y-J Chen
- Forschungszentrum Jülich GmbH, Peter Grünberg Institut (PGI-6), 52428 Jülich, Germany
| | - D Vasilyev
- Institut für Physik, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
| | - K Medjanik
- Institut für Physik, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
| | - G Brenner
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - S Dziarzhytski
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - H Redlin
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - B Manschwetus
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - S Dong
- Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - J Hauer
- Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - L Rettig
- Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - F Diekmann
- Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität zu Kiel, 24098 Kiel, Germany
| | - K Rossnagel
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
| | - J Demsar
- Institut für Physik, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
| | - H-J Elmers
- Institut für Physik, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
| | - Ph Hofmann
- Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, 8000 Aarhus C, Denmark
| | - R Ernstorfer
- Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - G Schönhense
- Institut für Physik, Johannes Gutenberg-Universität Mainz, 55128 Mainz, Germany
| | - Y Acremann
- Laboratorium für Festkörperphysik, ETH Zürich, 8093 Zürich, Switzerland
| | - W Wurth
- Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
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Huang X, Guo Y, Li P, Ma X, Dong S, Hu H, Li Y, Yuan L. Association of Circulating Retinol and α-TOH Levels with Cognitive Function in Aging Subject with Type 2 Diabetes Mellitus. J Nutr Health Aging 2020; 24:290-299. [PMID: 32115610 DOI: 10.1007/s12603-020-1328-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVES Malnutrition of vitamin A (retinol) and vitamin E (α-tocopherol, α-TOH) was observed in type 2 diabetes mellitus (T2DM) or dementia patients. However, how these vitamins affect cognitive function of subjects with T2DM was seldom reported. The objective of this study was to determine the association of circulating retinol and α-TOH with cognition in aging subjects with T2DM. METHODS A total of 448 T2DM subjects and 448 age, gender and education matched control subjects (aged 55-75 years) were included in the study. Demographic characters of the participants were collected. Food frequency questionnaire (FFQ) method was used to collect dietary intake information. To assess the status of cognition, the MoCA test was used. Circulating retinol and α-TOH levels were compared between T2DM and non-T2DM subjects. Correlation of circulating retinol and α-TOH levels with cognitive function was analyzed in T2DM subjects. The effect of serum retinol and α-TOH levels on the risk of MCI in T2DM patients was explored. RESULTS We found that T2DM-MCI subjects demonstrate lower serum retinol level than T2DM-nonMCI subjects (P < 0.01). Serum retinol level was positively correlated to cognitive function in T2DM subject (P < 0.05). T2DM subjects with higher circulating retinol level demonstrate higher cognitive scores in visual and executive, attention, language, memory and delayed recall domains (P < 0.05). CONCLUSION Diminished circulating retinol predicts an increased risk of MCI in T2DM patients. Our findings provide suggestions that optimal retinol nutritional status might benefit cognition and decrease the risk of MCI in aging subjects with T2DM.
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Affiliation(s)
- X Huang
- Linhong Yuan, School of Public Health, Capital Medical University, Beijing 100069, P.R. China, E-mail: , Tel: +86-010-83911652; Fax: +86-010-83911512
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50
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Hu J, Kuang Y, Liao B, Cao L, Dong S, Li P. A Multichannel 2D Convolutional Neural Network Model for Task-Evoked fMRI Data Classification. Comput Intell Neurosci 2019; 2019:5065214. [PMID: 32082370 PMCID: PMC7012272 DOI: 10.1155/2019/5065214] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 12/05/2019] [Accepted: 12/11/2019] [Indexed: 11/18/2022]
Abstract
Deep learning models have been successfully applied to the analysis of various functional MRI data. Convolutional neural networks (CNN), a class of deep neural networks, have been found to excel at extracting local meaningful features based on their shared-weights architecture and space invariance characteristics. In this study, we propose M2D CNN, a novel multichannel 2D CNN model, to classify 3D fMRI data. The model uses sliced 2D fMRI data as input and integrates multichannel information learned from 2D CNN networks. We experimentally compared the proposed M2D CNN against several widely used models including SVM, 1D CNN, 2D CNN, 3D CNN, and 3D separable CNN with respect to their performance in classifying task-based fMRI data. We tested M2D CNN against six models as benchmarks to classify a large number of time-series whole-brain imaging data based on a motor task in the Human Connectome Project (HCP). The results of our experiments demonstrate the following: (i) convolution operations in the CNN models are advantageous for high-dimensional whole-brain imaging data classification, as all CNN models outperform SVM; (ii) 3D CNN models achieve higher accuracy than 2D CNN and 1D CNN model, but 3D CNN models are computationally costly as any extra dimension is added in the input; (iii) the M2D CNN model proposed in this study achieves the highest accuracy and alleviates data overfitting given its smaller number of parameters as compared with 3D CNN.
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Affiliation(s)
- Jinlong Hu
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Yuezhen Kuang
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Bin Liao
- College of Mathematics and Informatics, South China Agricultural University, Guangzhou, China
| | - Lijie Cao
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Shoubin Dong
- School of Computer Science and Engineering, South China University of Technology, Guangzhou, China
| | - Ping Li
- Faculty of Humanities, The Hong Kong Polytechnic University, Hong Kong, China
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