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Zhuo Z, Wang Q, Li C, Zhang L, Zhang L, You R, Gong Y, Hua Y, Miao L, Bai J, Zhang C, Feng R, Chen M, Su F, Qu C, Xiao F. IGH rod-like tracer: An AlphaFold2 structural similarity extraction-based predictive biomarker for MRD monitoring in pre-B-ALL. iScience 2023; 26:107107. [PMID: 37408685 PMCID: PMC10319212 DOI: 10.1016/j.isci.2023.107107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/31/2023] [Accepted: 06/08/2023] [Indexed: 07/07/2023] Open
Abstract
Sequence variation resulting from the evolution of IGH clones and immunophenotypic drift makes it difficult to track abnormal B cells in children with precursor B cell acute lymphoblastic leukemia (pre-B-ALL) by flow cytometry, qPCR, or next-generation sequencing (NGS). The V-(D)-J regions of immunoglobulin and T cell receptor of 47 pre-B-ALL samples were sequenced using the Illumina NovaSeq platform. The IGH rod-like tracer consensus sequence was extracted based on its rod-like alpha-helices structural similarity predicted by AlphaFold2. Additional data from published 203 pre-B-ALL samples were applied for validation. NGS-IGH (+) patients with pre-B-ALL had a poor prognosis. Consistent CDR3-coded protein structures in NGS-IGH (+) samples could be extracted as a potential follow-up marker for pre-B-ALL children during treatment. IGH rod-like tracer from quantitative immune repertoire sequencing may serve as a class of biomarker with significant predictive values for the dynamic monitoring of MRD in pre-B-ALL children.
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Affiliation(s)
- Zhongling Zhuo
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
- Department of Laboratory Medicine, Peking University People’s Hospital, Beijing, China
| | - Qingchen Wang
- Department of Clinical Laboratory, Peking University First Hospital, Beijing, China
| | - Chang Li
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Lili Zhang
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Lanxin Zhang
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Ran You
- Department of Clinical Laboratory, Peking University First Hospital, Beijing, China
| | - Yan Gong
- Department of Clinical Laboratory, Peking University First Hospital, Beijing, China
| | - Ying Hua
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Linzi Miao
- Department of Clinical Laboratory, Peking University First Hospital, Beijing, China
| | - Jiefei Bai
- Department of Hematology, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Chunli Zhang
- Department of Hematology, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Ru Feng
- Department of Hematology, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Meng Chen
- National Cancer Data Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, P.R. China
| | - Fei Su
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Chenxue Qu
- Department of Clinical Laboratory, Peking University First Hospital, Beijing, China
| | - Fei Xiao
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
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Ju Y, Liu K, Ma G, Zhu B, Wang H, Hu Z, Zhao J, Zhang L, Cui K, He XR, Huang M, Li Y, Xu S, Gao Y, Liu K, Liu H, Zhuo Z, Zhang G, Guo Z, Ye Y, Zhang L, Zhou X, Ma S, Qiu Y, Zhang M, Tao Y, Zhang M, Xian L, Xie W, Wang G, Wang Y, Wang C, Wang DH, Yu K. Bacterial antibiotic resistance among cancer inpatients in China: 2016-20. QJM 2023; 116:213-220. [PMID: 36269193 DOI: 10.1093/qjmed/hcac244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 09/16/2022] [Accepted: 10/10/2022] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The incidence of infections among cancer patients is as high as 23.2-33.2% in China. However, the lack of information and data on the number of antibiotics used by cancer patients is an obstacle to implementing antibiotic management plans. AIM This study aimed to investigate bacterial infections and antibiotic resistance in Chinese cancer patients to provide a reference for the rational use of antibiotics. DESIGN This was a 5-year retrospective study on the antibiotic resistance of cancer patients. METHODS In this 5-year surveillance study, we collected bacterial and antibiotic resistance data from 20 provincial cancer diagnosis and treatment centers and three specialized cancer hospitals in China. We analyzed the resistance of common bacteria to antibiotics, compared to common clinical drug-resistant bacteria, evaluated the evolution of critical drug-resistant bacteria and conducted data analysis. FINDINGS Between 2016 and 2020, 216 219 bacterial strains were clinically isolated. The resistance trend of Escherichia coli and Klebsiella pneumoniae to amikacin, ciprofloxacin, cefotaxime, piperacillin/tazobactam and imipenem was relatively stable and did not significantly increase over time. The resistance of Pseudomonas aeruginosa strains to all antibiotics tested, including imipenem and meropenem, decreased over time. In contrast, the resistance of Acinetobacter baumannii strains to carbapenems increased from 4.7% to 14.7%. Methicillin-resistant Staphylococcus aureus (MRSA) significantly decreased from 65.2% in 2016 to 48.9% in 2020. CONCLUSIONS The bacterial prevalence and antibiotic resistance rates of E. coli, K. pneumoniae, P. aeruginosa, A. baumannii, S. aureus and MRSA were significantly lower than the national average.
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Affiliation(s)
- Y Ju
- From the Department of Critical Care Medicine, Harbin Medical University Cancer Hospital, Harbin, China
| | - K Liu
- Department of Critical Care Medicine, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - G Ma
- Department of Critical Care Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - B Zhu
- Department of Critical Care Medicine, Fudan University Shanghai Cancer Center, Shanghai, China
| | - H Wang
- Department of Critical Care Medicine, Peking University Cancer Hospital & Institute, Beijing, China
| | - Z Hu
- Department of Critical Care Medicine, Hebei Tumor Hospital, Shijiazhuang, China
| | - J Zhao
- Department of Critical Care Medicine, Hunan Cancer Hospital, Changsha, China
| | - L Zhang
- Department of Critical Care Medicine, Hubei Cancer Hospital, Wuhan, China
| | - K Cui
- Department of Critical Care Medicine, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - X-R He
- Department of Critical Care Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - M Huang
- Department of Critical Care Medicine, Shanxi Tumor Hospital, Taiyuan, China
| | - Y Li
- Department of Critical Care Medicine, Guangxi Medical University Cancer Hospital, Nanning, China
| | - S Xu
- Department of Critical Care Medicine, Sichuan Cancer Hospital, Chengdu, China
| | - Y Gao
- Department of Critical Care Medicine, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, China
| | - K Liu
- Department of Critical Care Medicine, Zhejiang Cancer Hospital, Hangzhou, China
| | - H Liu
- From the Department of Critical Care Medicine, Harbin Medical University Cancer Hospital, Harbin, China
| | - Z Zhuo
- From the Department of Critical Care Medicine, Harbin Medical University Cancer Hospital, Harbin, China
| | - G Zhang
- Department of Critical Care Medicine, Jilin Tumor Hospital, Changchun, China
| | - Z Guo
- Department of Critical Care Medicine, Shandong Cancer Hospital and Institute, Shandong, China
| | - Y Ye
- Department of Critical Care Medicine, Fujian Cancer Hospital, Fuzhou, China
| | - L Zhang
- Department of Critical Care Medicine, Anhui Provincial Cancer Hospital, Hefei, China
| | - X Zhou
- Department of Critical Care Medicine, Gansu Provincial Cancer Hospital, Lanzhou, China
| | - S Ma
- Department of Critical Care Medicine, Jiangsu Cancer Hospital, Nanjing, China
| | - Y Qiu
- Department of Critical Care Medicine, Jiangxi Cancer Hospital, Nanchang, China
| | - M Zhang
- Department of Critical Care Medicine, Hangzhou Cancer Hospital, Hangzhou, China
| | - Y Tao
- Department of Critical Care Medicine, Nantong Tumor Hospital, Nantong, China
| | - M Zhang
- Department of Critical Care Medicine, Baotou Cancer Hospital, Baotou, China
| | - L Xian
- Department of Critical Care Medicine, Affiliated Cancer Hospital and Institute of Guangzhou Medical University, Guangzhou, China
| | - W Xie
- Department of Critical Care Medicine, The Affiliated Cancer Hospital of Guizhou Medical University, Guiyang, China
| | - G Wang
- Department of Critical Care Medicine, The First Hospital of Jilin University, Changchun, China
| | - Y Wang
- Department of Critical Care Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - C Wang
- From the Department of Critical Care Medicine, Harbin Medical University Cancer Hospital, Harbin, China
| | - D-H Wang
- Department of Critical Care Medicine, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - K Yu
- Department of Critical Care Medicine, The First Affiliated Hospital of Harbin Medical University, Harbin, China
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Li C, Zhang L, Zhuo Z, Su F, Li H, Xu S, Liu Y, Zhang Z, Xie Y, Yu X, Bian L, Xiao F. Artificial intelligence-based recognition for variant pathogenicity of BRCA1 using AlphaFold2-predicted structures. Theranostics 2023; 13:391-402. [PMID: 36593954 PMCID: PMC9800725 DOI: 10.7150/thno.79362] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Accepted: 11/21/2022] [Indexed: 12/23/2022] Open
Abstract
With the surge of the high-throughput sequencing technologies, many genetic variants have been identified in the past decade. The vast majority of these variants are defined as variants of uncertain significance (VUS), as their significance to the function or health of an organism is not known. It is urgently needed to develop intelligent models for the clinical interpretation of VUS. State-of-the-art artificial intelligence (AI)-based variant effect predictors only learn features from primary amino acid sequences, leaving out information about the most important three-dimensional structure that is more related to its function. Methods: We proposed a deep convolutional neural network model named variant effect recognition network for BRCA1 (vERnet-B) to recognize the clinical pathogenicity of missense single-nucleotide variants in the BRCT domain of BRCA1. vERnet-B learned features associated with the pathogenicity from the tertiary protein structures of variants predicted by AlphaFold2. Results: After performing a series of validation and analyses on vERnet-B, we discovered that it exhibited significant advances over previous works. Recognizing the phenotypic consequences of VUS is one of the most daunting challenges in genetic informatics; however, we achieved 85% accuracy in recognizing disease BRCA1 variants with an ideal balance of false-positive and true-positive detection rates. vERnet-B correctly recognized the pathogenicity of variant A1708E, which was poorly predicted by AlphaFold2 as previously described. The vERnet-B web server is freely available from URL: http://ai-lab.bjrz.org.cn/vERnet. Conclusions: We applied protein tertiary structures to successfully recognize the pathogenic missense SNVs, which were difficult to be addressed by classical approaches based on sequences. Our work demonstrated that AlphaFold2-predicted structures were expected to be used for rich feature learning and revealed unique insights into the clinical interpretation of VUS in disease-related genes, using vERnet-B as a discovery tool.
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Affiliation(s)
- Chang Li
- Peking University Fifth School of Clinical Medicine, Beijing, China.,Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.,The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Lili Zhang
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.,The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhongling Zhuo
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China.,The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Fei Su
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Hexin Li
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Siyuan Xu
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Ye Liu
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Zaifeng Zhang
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Yibo Xie
- Information Center, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Xue Yu
- Department of Cardiology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.,✉ Corresponding authors: Prof. Xue Yu, Department of Cardiology, Beijing Hospital, Beijing, China, ; Prof. Liheng Bian, Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China, ; Prof. Fei Xiao, Peking University Fifth School of Clinical Medicine, Beijing, China, Phone: (86)10-58115083,
| | - Liheng Bian
- Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China.,✉ Corresponding authors: Prof. Xue Yu, Department of Cardiology, Beijing Hospital, Beijing, China, ; Prof. Liheng Bian, Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China, ; Prof. Fei Xiao, Peking University Fifth School of Clinical Medicine, Beijing, China, Phone: (86)10-58115083,
| | - Fei Xiao
- Peking University Fifth School of Clinical Medicine, Beijing, China.,Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.,The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.,✉ Corresponding authors: Prof. Xue Yu, Department of Cardiology, Beijing Hospital, Beijing, China, ; Prof. Liheng Bian, Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology, Beijing, China, ; Prof. Fei Xiao, Peking University Fifth School of Clinical Medicine, Beijing, China, Phone: (86)10-58115083,
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4
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Zeng R, Wu H, Qiu X, Zhuo Z, Sha W, Chen H. Predicting survival and immune microenvironment in colorectal cancer: a STAT signaling-related signature. QJM 2022; 115:596-604. [PMID: 34978566 DOI: 10.1093/qjmed/hcab334] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 12/17/2021] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Despite research advances, studies on predictive models of colorectal cancer (CRC) remain scarce and none have evaluated signal transducer and activator of transcription (STAT) signaling. AIM To develop an effective prognostic signature for and evaluate its association with immune microenvironment. DESIGN Comprehensive analysis based on The Cancer Genome Atlas and Gene Expression Omnibus databases with experimental validation. METHODS Gene expression and clinical profiles of CRC patients were extracted from the databases. Differentially expressed genes with prognostic values were used to construct a signature. Immune cell infiltration and composition were further evaluated by TIMER, single-sample gene set enrichment and CIBERSORT analyses. The impact of the hub gene Caveolin-1 (CAV1) on cell proliferation, apoptosis, senescence and tumor angiogenesis was experimentally validated. RESULTS The five-gene-based STAT signaling-related prognostic signature was significantly associated with CRC survival, and the nomogram was with improved prognostic efficacy than the conventional TNM stage. The STAT signaling-related signature was correlated with tumor immune microenvironment. CAV1 was further identified as the hub gene within the signature. CAV1 inhibits the proliferation and induces the apoptosis as well as senescence of CRC cells. In addition, the tumor angiogenesis of CRC can be suppressed by CAV1 overexpression. CONCLUSIONS The STAT signaling-related signature effectively predicts the prognosis and regulates tumor immune microenvironment in CRC. Our study underscores the role of STAT regulator, CAV1, as an important tumor suppressor in CRC carcinogenesis. Modulating STAT and its regulators could be a promising strategy for CRC in clinical practice.
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Affiliation(s)
- R Zeng
- From the Department of Gastroenterology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Yuexiu District, Guangdong, China
- Shantou University Medical College, Shantou 515041, Jinping District, Guangdong, China
| | - H Wu
- From the Department of Gastroenterology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Yuexiu District, Guangdong, China
- School of Medicine, South China University of Technology, Guangzhou 510006, Panyu District, Guangdong, China
| | - X Qiu
- Zhuguang Community Healthcare Center, Guangzhou 510080, Yuexiu District, Guangdong, China
| | - Z Zhuo
- From the Department of Gastroenterology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Yuexiu District, Guangdong, China
- School of Bioscience and Bioengineering, South China University of Technology, Guangzhou 510006, Panyu District, Guangdong, China
| | - W Sha
- From the Department of Gastroenterology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Yuexiu District, Guangdong, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou 510515, Baiyun District, Guangdong, China
- School of Medicine, South China University of Technology, Guangzhou 510006, Panyu District, Guangdong, China
| | - H Chen
- From the Department of Gastroenterology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, Yuexiu District, Guangdong, China
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou 510515, Baiyun District, Guangdong, China
- School of Medicine, South China University of Technology, Guangzhou 510006, Panyu District, Guangdong, China
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5
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Li Y, Wan L, Zhang L, Zhuo Z, Luo X, Cui J, Liu Y, Su F, Tang M, Xiao F. Evaluating the activity of nonsense-mediated RNA decay via Nanopore direct RNA sequencing. Biochem Biophys Res Commun 2022; 621:67-73. [DOI: 10.1016/j.bbrc.2022.06.055] [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] [Received: 05/14/2022] [Revised: 06/01/2022] [Accepted: 06/18/2022] [Indexed: 11/27/2022]
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Cui H, Rong W, Ma J, Zhu Q, Jiang B, Zhang L, Li C, Zhuo Z, Chen M. DNA N6-Adenine methylation in HBV-related hepatocellular carcinoma. Gene 2022; 822:146353. [PMID: 35189250 DOI: 10.1016/j.gene.2022.146353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 01/26/2022] [Accepted: 02/15/2022] [Indexed: 12/13/2022]
Abstract
DNA methylation on N6-adenine (6mA) has recently been found to be a potential epigenetic marker in prokaryotes and eukaryotes. However, its distribution patterns and potential functions in human tumorigenesis remain largely unknown. Here, we reported global profiling of 6mA sites in the genome of hepatocellular carcinoma at single-nucleotide resolution using Nanopore sequencing. 6mA was widely distributed throughout the human genome. The 6mA sites were related to the porphyrin and chlorophyll metabolism in autosomes and were related to oxidative phosphorylation and ATP metabolism in mitochondria. AGG was the most significant motif associated with 6mA modification and the prevalent motifs in tumors were mainly distributed in mitochondria. The density of 6mA was related to the activation of gene transcription and 6mA density in repetitive sequences decreased in hepatocellular carcinoma. DNA 6mA methylation modification may also be a potential biomarker for cancer diagnosis and treatment.
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Affiliation(s)
- Hongyuan Cui
- Department of General Surgery, Department of Hepato-bilio-pancreatic Surgery, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, 100730 Beijing, China; Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai 810001, China
| | - Weiqi Rong
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie Ma
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai 810001, China
| | - Qing Zhu
- Department of Hepatopancreatobiliary Surgery, Affiliated Hospital of Qinghai University, Qinghai 810001, China
| | - Boyue Jiang
- Department of General Surgery, Department of Hepato-bilio-pancreatic Surgery, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, 100730 Beijing, China
| | - Lili Zhang
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Chang Li
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China; Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhongling Zhuo
- The Key Laboratory of Geriatrics, Beijing Institute of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China; Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.
| | - Meng Chen
- National Cancer Data Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Ding J, Duan Y, Wang M, Yuan Y, Zhuo Z, Gan L, Song Q, Gao B, Yang L, Liu H, Hou Y, Zheng F, Chen R, Wang J, Lin L, Zhang B, Zhang G, Liu Y. Acceleration of Brain Susceptibility-Weighted Imaging with Compressed Sensitivity Encoding: A Prospective Multicenter Study. AJNR Am J Neuroradiol 2022; 43:402-409. [PMID: 35241421 PMCID: PMC8910792 DOI: 10.3174/ajnr.a7441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/17/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE While three-dimensional susceptibility-weighted imaging has been widely suggested for intracranial vessel imaging, hemorrhage detection, and other neuro-diseases, its relatively long scan time has necessitated the clinical verification of recent progresses of fast imaging techniques. Our aim was to evaluate the effectiveness of brain SWI accelerated by compressed sensitivity encoding to identify the optimal acceleration factors for clinical practice. MATERIALS AND METHODS Ninety-nine subjects, prospectively enrolled from 5 centers, underwent 8 brain SWI sequences: 5 different folds of compressed sensitivity encoding acceleration (CS2, CS4, CS6, CS8, and CS10), 2 different folds of sensitivity encoding acceleration (SF2 and SF4), and 1 without acceleration. Images were assessed quantitatively on both the SNR of the red nucleus and its contrast ratio to the CSF and, subjectively, with scoring on overall image quality; visibility of the substantia nigra-red nucleus, basilar artery, and internal cerebral vein; and diagnostic confidence of the cerebral microbleeds and other intracranial diseases. RESULTS Compressed sensitivity encoding showed a promising ability to reduce the acquisition time (from 202 to 41 seconds) of SWI while increasing the acceleration factor from 2 to 10, though at the cost of decreasing the SNR, contrast ratio, and the scores of visual assessments. The visibility of the substantia nigra-red nucleus and internal cerebral vein became unacceptable in CS6 to CS10. The basilar artery was well-distinguished, and diseases including cerebral microbleeds, cavernous angiomas, intracranial gliomas, venous malformations, and subacute hemorrhage were well-diagnosed in all compressed sensitivity encoding sequences. CONCLUSIONS Compressed sensitivity encoding factor 4 is recommended in routine practice. Compressed sensitivity encoding factor 10 is potentially a fast surrogate for distinguishing the basilar artery and detecting susceptibility-related abnormalities (eg, cerebral microbleeds, cavernous angiomas, gliomas, and venous malformation) at the sacrifice of visualization of the substantia nigra-red nucleus and internal cerebral vein.
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Affiliation(s)
- J. Ding
- From the Department of Radiology (J.D., Y.D., Z.Z., L.G., F.Z., R.C., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Y. Duan
- From the Department of Radiology (J.D., Y.D., Z.Z., L.G., F.Z., R.C., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - M. Wang
- Department of Radiology (M.W., B.Z.), The Affiliated Drum Tower Hospital of Nanjing UniversityMedical School, Jiangsu, China
| | - Y. Yuan
- Department of Radiology (Y.Y., G.Z.), Beijing Royal Integrative Medicine Hospital, Beijing, China
| | - Z. Zhuo
- From the Department of Radiology (J.D., Y.D., Z.Z., L.G., F.Z., R.C., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - L. Gan
- From the Department of Radiology (J.D., Y.D., Z.Z., L.G., F.Z., R.C., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Q. Song
- Department of Radiology (Q.S., B.G.), First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - B. Gao
- Department of Radiology (Q.S., B.G.), First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - L. Yang
- Department of Radiology (L.Y., H.L., Y.H.), Shengjing Hospital of ChinaMedical University, Shenyang, China
| | - H. Liu
- Department of Radiology (L.Y., H.L., Y.H.), Shengjing Hospital of ChinaMedical University, Shenyang, China
| | - Y. Hou
- Department of Radiology (L.Y., H.L., Y.H.), Shengjing Hospital of ChinaMedical University, Shenyang, China
| | - F. Zheng
- From the Department of Radiology (J.D., Y.D., Z.Z., L.G., F.Z., R.C., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - R. Chen
- From the Department of Radiology (J.D., Y.D., Z.Z., L.G., F.Z., R.C., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - J. Wang
- Philips Healthcare (J.W., L.L.), Beijing, China
| | - L. Lin
- Philips Healthcare (J.W., L.L.), Beijing, China
| | - B. Zhang
- Department of Radiology (M.W., B.Z.), The Affiliated Drum Tower Hospital of Nanjing UniversityMedical School, Jiangsu, China
| | - G. Zhang
- Department of Radiology (Y.Y., G.Z.), Beijing Royal Integrative Medicine Hospital, Beijing, China
| | - Y. Liu
- From the Department of Radiology (J.D., Y.D., Z.Z., L.G., F.Z., R.C., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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Yu HY, Meng LF, Lu XH, Liu LH, Ci X, Zhuo Z. Protective effect of miR-146 against kidney injury in diabetic nephropathy rats through mediating the NF-κB signaling pathway. Eur Rev Med Pharmacol Sci 2021; 25:6445. [PMID: 34787846 DOI: 10.26355/eurrev_202111_27136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The article "Protective effect of miR-146 against kidney injury in diabetic nephropathy rats through mediating the NF-κB signaling pathway", H.-Y. Yu, L.-F. Meng, X.-H. Lu, L.-H. Liu, X. Ci, Z. Zhuo, published in Eur Rev Med Pharmacol Sci 2020; 24 (6): 3215-3222-DOI: 10.26355/eurrev_202003_20688-PMID: 32271439, has been retracted by the authors due to some inaccuracies (some data cannot be repeated by further research). The Publisher apologizes for any inconvenience this may cause. https://www.europeanreview.org/article/20688.
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Affiliation(s)
- H-Y Yu
- Department of Nephrology, The Second Hospital of Jilin University, Changchun, China
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9
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Zhuo Z, Rong W, Li H, Li Y, Luo X, Liu Y, Tang X, Zhang L, Su F, Cui H, Xiao F. Long-read sequencing reveals the structural complexity of genomic integration of HBV DNA in hepatocellular carcinoma. NPJ Genom Med 2021; 6:84. [PMID: 34642322 PMCID: PMC8511263 DOI: 10.1038/s41525-021-00245-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 09/03/2021] [Indexed: 02/01/2023] Open
Abstract
The integration of HBV DNA into the human genome can disrupt its structure in hepatocellular carcinoma (HCC), but the complexity of HBV genomic integration remains elusive. Here we applied long-read sequencing to precisely elucidate the HBV integration pattern in the human hepatocellular genome. The DNA library was sequenced using the long-read sequencing on GridION and PacBio Sequel II, respectively. The DNA and mRNA were sequenced using next-generation sequencing on Illumina NextSeq. BLAST (Basic Local Alignment Search Tool) and local scripts were used to analyze HBV integration patterns. We established an analytical strategy based on the long-read sequences, and analyzed the complexity of HBV DNA integration into the hepatocellular genome. A total of 88 integrated breakpoints were identified. HBV DNA integration into human genomic DNA was mainly fragmented with different orientations, rarely with a complete genome. The same HBV integration breakpoints were identified among the three platforms. Most breakpoints were observed at P, X, and S genes in the HBV genome, and observed at introns, intergenic sequences, and exons in the human genome. Tumor tissue harbored a much higher integrated number than the adjacent tissue, and the distribution of HBV integrated into human chromosomes was more concentrated. HBV integration shows different patterns between cancer cells and adjacent normal cells. We for the first time obtained the entire HBV integration pattern through long-read sequencing and demonstrated the value of long-read sequencing in detecting the genomic integration structures of viruses in host cells.
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Affiliation(s)
- Zhongling Zhuo
- Peking University Fifth School of Clinical Medicine, Beijing, China.,The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.,Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Weiqi Rong
- Department of Hepatobiliary Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences (CAMS) and Peking Union Medical College (PUMC), Beijing, China
| | - Hexin Li
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Ying Li
- The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Xuanmei Luo
- The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Ye Liu
- The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Xiaokun Tang
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Lili Zhang
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Fei Su
- Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China
| | - Hongyuan Cui
- Department of Surgery, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.
| | - Fei Xiao
- Peking University Fifth School of Clinical Medicine, Beijing, China. .,The Key Laboratory of Geriatrics, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China. .,Clinical Biobank, Beijing Hospital, National Center of Gerontology, National Health Commission, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.
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Ding J, Duan Y, Zhuo Z, Yuan Y, Zhang G, Song Q, Gao B, Zhang B, Wang M, Yang L, Hou Y, Yuan J, Feng C, Wang J, Lin L, Liu Y. Acceleration of Brain TOF-MRA with Compressed Sensitivity Encoding: A Multicenter Clinical Study. AJNR Am J Neuroradiol 2021; 42:1208-1215. [PMID: 33858820 DOI: 10.3174/ajnr.a7091] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 01/10/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND PURPOSE The clinical practice of three-dimensional TOF-MRA, despite its capability in brain artery assessment, has been hampered by the relatively long scan time, while recent developments in fast imaging techniques with random undersampling has shed light on an improved balance between image quality and imaging speed. Our aim was to evaluate the effectiveness of TOF-MRA accelerated by compressed sensitivity encoding and to identify the optimal acceleration factors for routine clinical use. MATERIALS AND METHODS One hundred subjects, enrolled at 5 centers, underwent 8 brain TOF-MRA sequences: 5 sequences using compressed sensitivity encoding with acceleration factors of 2, 4, 6, 8, and 10 (CS2, CS4, CS6, CS8, and CS10), 2 using sensitivity encoding with factors of 2 and 4 (SF2 and SF4), and 1 without acceleration as a reference sequence (RS). Five large arteries, 6 medium arteries, and 6 small arteries were evaluated quantitatively (reconstructed signal intensity, structural similarity, contrast ratio) and qualitatively (scores on arteries, artifacts, overall image quality, and diagnostic confidence for aneurysm and stenosis). Comparisons were performed among the 8 sequences. RESULTS The quantitative measurements showed that the reconstructed signal intensities of the assessed arteries and the structural similarity consistently decreased as the compressed sensitivity encoding acceleration factor increased, and no significant difference was found for the contrast ratios in pair-wise comparisons among SF2, CS2, and CS4. Qualitative evaluations showed no significant difference in pair-wise comparisons among RS, SF2, and CS2 (P > .05). The visualization of all the assessed arteries was acceptable for CS2 and CS4, while 2 small arteries in images of CS6 were not reliably displayed, and the visualization of large arteries was acceptable in images of CS8 and CS10. CONCLUSIONS CS4 is recommended for routine brain TOF-MRA with balanced image quality and acquisition time; CS6, for examinations when small arteries are not evaluated; and CS10, for fast visualization of large arteries.
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Affiliation(s)
- J Ding
- From the Department of Radiology (J.D., Y.D., Z.Z., J.Y., C.F., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Y Duan
- From the Department of Radiology (J.D., Y.D., Z.Z., J.Y., C.F., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Z Zhuo
- From the Department of Radiology (J.D., Y.D., Z.Z., J.Y., C.F., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Y Yuan
- Department of Radiology (Y.Y., G.Z.), Beijing Royal Integrative Medicine Hospital, Beijing, China
| | - G Zhang
- Department of Radiology (Y.Y., G.Z.), Beijing Royal Integrative Medicine Hospital, Beijing, China
| | - Q Song
- Department of Radiology (Q.S., B.G.), the First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - B Gao
- Department of Radiology (Q.S., B.G.), the First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - B Zhang
- Department of Radiology (B.Z., M.W.), The Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu, China
| | - M Wang
- Department of Radiology (B.Z., M.W.), The Affiliated Drum Tower Hospital of Nanjing University Medical School, Jiangsu, China
| | - L Yang
- Department of Radiology (L.Y., Y.H.), Shengjing Hospital of China Medical University, Shenyang, China
| | - Y Hou
- Department of Radiology (L.Y., Y.H.), Shengjing Hospital of China Medical University, Shenyang, China
| | - J Yuan
- From the Department of Radiology (J.D., Y.D., Z.Z., J.Y., C.F., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - C Feng
- From the Department of Radiology (J.D., Y.D., Z.Z., J.Y., C.F., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - J Wang
- Philips Healthcare (J.W., L.L.), Beijing, P.R. China
| | - L Lin
- Philips Healthcare (J.W., L.L.), Beijing, P.R. China
| | - Y Liu
- From the Department of Radiology (J.D., Y.D., Z.Z., J.Y., C.F., Y.L.), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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Yu HY, Meng LF, Lu XH, Liu LH, Ci X, Zhuo Z. Protective effect of miR-146 against kidney injury in diabetic nephropathy rats through mediating the NF-κB signaling pathway. Eur Rev Med Pharmacol Sci 2021; 24:3215-3222. [PMID: 32271439 DOI: 10.26355/eurrev_202003_20688] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To study the protective effect of micro ribonucleic acid (miR)-146 against kidney injury in diabetic nephropathy (DN) rats through the nuclear factor-κB (NF-κB) signaling pathway. MATERIALS AND METHODS In this experiment, 30 adult Sprague-Dawley rats with 5-6 weeks old and weighing 20-30 g were selected and randomly divided into control group (n=10), model group (n=10), and miR-146 Mimic group (n=10, DN rat model + miR-146 Mimic). The serum levels of creatinine (Cr) and blood urea nitrogen (BUN) in the three groups were detected using the full-automatic biochemical analyzer. The protein expression levels of phosphorylated-inhibitor of NF-κB (p-IκB), p-P65, P65, and Tubulin were detected via Western blotting. The messenger RNA (mRNA) of P65 was determined using quantitative Polymerase Chain Reaction (qPCR). Positive expression of p-IκB in tissues was determined using immunohistochemistry. Moreover, the contents of inflammatory factors tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and IL-6 were detected using the enzyme-linked immunosorbent assay (ELISA) kits. Finally, the apoptosis was detected through Annexin V-fluorescein isothiocyanate (FITC) and propidium iodide (PI) dual-fluorescence labeling. RESULTS The serum levels of Cr and BUN were significantly higher in the model group than those in the control group (p<0.01), while they were significantly lower in miR-146 Mimic group than those in the model group (p<0.05). The levels of p-IκB and p-P65/P65 significantly increased in the model group compared with those in the control group (p<0.01), while they remarkably declined in the miR-146 Mimic group compared with those in the model group (p<0.05). The results of qPCR showed that the mRNA level of P65 had no significant difference among the three groups (p>0.05). The immunohistochemical assay showed that the positive expression of p-IκB in tissues was consistent with those of the protein level as Western blotting revealed. The rats in the model group had evidently increased levels of TNF-α, IL-1β, and IL-6 compared with the control group (p<0.01), while miR-146 Mimic group had evidently decreased levels of them compared with the model group (p<0.01). Finally, apoptosis was enhanced in the model group compared with that in the control group, while it was remarkably inhibited in the miR-146 Mimic group. CONCLUSIONS MiR-146 can inhibit the NF-κB signaling pathway, lower the levels of TNF-α, IL-1β, and IL-6, and reduce the apoptosis, thereby exerting a protective effect against kidney injury in DN.
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Affiliation(s)
- H-Y Yu
- Department of Nephrology, The Second Hospital of Jilin University, Changchun, China.
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12
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Zheng L, Zhang M, Zhuo Z, Wang Y, Gao X, Li Y, Liu W, Zhang W. Transcriptome profiling analysis reveals distinct resistance response of cucumber leaves infected with powdery mildew. Plant Biol (Stuttg) 2021; 23:327-340. [PMID: 33176053 DOI: 10.1111/plb.13213] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
Powdery mildew is the main disease affecting cucumber cultivation and causes severe economic loss. So far, research on cucumber resistance to powdery mildew has not yielded feasible solutions. This study selected two inbred cucumber lines, XY09-118 (resistant) and Q10 (susceptible) and investigated their responses to powdery mildew infection (harvested 24 and 48 h after inoculation) using RNA sequencing. More than 20,000 genes were detected in cucumber leaves both with and without powdery mildew infection at the above two time points. Among these, 5478 genes were identified as differently expressed genes (DEGs) between XY09-118 and Q10. Based on the databases GO and KEGG, the functions of DEGs were analysed. Moreover, the complex regulatory network for powdery mildew resistance was assessed, which involves plant hormone signal transduction, phenylpropanoid biosynthesis, plant-pathogen interaction and the MAPK signalling pathway. In particular, genes encoding WRKY, NAC and TCP were highlighted. In addition, genes involved in plant hormone biosynthesis, metabolism and signal transduction, pathogen resistance and abiotic stress response were analysed. Co-expression analysis indicated that the transcription factors correlated with plant hormone signal pathway and metabolism, defence and abiotic response. The expression of several genes was validated by qRT-PCR. The pathogen resistance regulatory network was identified by comparing resistant and susceptible inbred lines infected with powdery mildew. The transcriptome data provide novel insights into cucumber response to powdery mildew infection and the identified pathogen resistance genes will be highly useful for breeding efforts to enhance the resistance of cucumber to powdery mildew.
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Affiliation(s)
- L Zheng
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Shandong Branch of National Vegetable Improvement Center, Shandong Academy of Agricultural Sciences, Institute of Vegetables and Flowers, Jinan, China
- College of Life and Environment Sciences, Huanshan University, Huangshan, China
| | - M Zhang
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Shandong Branch of National Vegetable Improvement Center, Shandong Academy of Agricultural Sciences, Institute of Vegetables and Flowers, Jinan, China
| | - Z Zhuo
- College of Forestry, Hainan University, Haikou, China
| | - Y Wang
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Shandong Branch of National Vegetable Improvement Center, Shandong Academy of Agricultural Sciences, Institute of Vegetables and Flowers, Jinan, China
| | - X Gao
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Shandong Branch of National Vegetable Improvement Center, Shandong Academy of Agricultural Sciences, Institute of Vegetables and Flowers, Jinan, China
| | - Y Li
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Shandong Branch of National Vegetable Improvement Center, Shandong Academy of Agricultural Sciences, Institute of Vegetables and Flowers, Jinan, China
| | - W Liu
- College of Agricultural Sciences and Technology, Shandong Agriculture and Engineering University, Jinan, China
| | - W Zhang
- Shandong Key Laboratory of Greenhouse Vegetable Biology, Shandong Branch of National Vegetable Improvement Center, Shandong Academy of Agricultural Sciences, Institute of Vegetables and Flowers, Jinan, China
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Bian WS, Tian FH, Jiang LH, Sun YF, Wu SX, Gao BF, Kang ZX, Zhuo Z, Zhang XZ. Influence of miR-34a on myocardial apoptosis in rats with acute myocardial infarction through the ERK1/2 pathway. Eur Rev Med Pharmacol Sci 2020; 23:3034-3041. [PMID: 31002154 DOI: 10.26355/eurrev_201904_17585] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To study the influence of micro-ribonucleic acid (miR)-34a on myocardial apoptosis in rats with acute myocardial infarction (AMI) through the extracellular signal-regulated kinase 1/2 (ERK1/2) pathway. MATERIALS AND METHODS A total of 24 Sprague-Dawley (SD) rats were randomly divided into sham group (n=12) and model group (n=12). The heart was exposed in the sham group, while the AMI model was established in the model group. After sampling, the morphology of myocardial tissues was observed via hematoxylin-eosin (HE) staining, the expressions of B-cell lymphoma-2 (Bcl-2) and Bcl-2 associated X protein (Bax) were detected via immunohistochemistry, and the protein expression levels of ERK1/2 and phosphorylated ERK1/2 (p-ERK1/2) were detected via Western blotting. Moreover, the expression of miR-34a was detected via quantitative Polymerase Chain Reaction (qPCR), the apoptosis was detected via terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL), and the myocardial injury indexes were detected using a fully-automatic biochemical analyzer. RESULTS The morphology of myocardial tissues was normal with a complete structure in the sham group, while there was damage to myocardial tissues in different degrees in the model group. The immunohistochemical results revealed that the Bax expression was increased and the Bcl-2 expression was decreased in the model group compared with those in the sham group (p<0.05). The results of Western blotting showed that the protein expression levels of both ERK1/2 and p-ERK1/2 were significantly increased in the model group compared with those in the sham group (p<0.05). The qPCR results manifested that the expression of miR-34a in the model group markedly declined compared with that in the sham group (p<0.05). Besides, the TUNEL detection showed that the apoptosis rate in the model group was remarkably increased compared with that in the sham group (p<0.05), and the content of cardiac troponin T and creatine kinase isoenzyme in the model group was significantly higher than that in the sham group ((p<0.05). CONCLUSIONS MiR-34a affects the apoptosis in AMI by regulating the ERK1/2 signaling pathway.
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Affiliation(s)
- W-S Bian
- Department of Cardiovascular Medicine, Linyi No. 3 People's Hospital, Linyi, China.
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Jiang Q, Ji L, Qiu Y, Su X, Guo M, Zhong S, Yang Z, Zhang Z, Qu R, Bian R, Chen C, Meng L, Zhuo Z, Tan W, Takiff HE, Yu W, Gao Q. A randomised controlled trial of stepwise sputum collection to increase yields of confirmed tuberculosis. Int J Tuberc Lung Dis 2019; 23:685-691. [PMID: 31315700 DOI: 10.5588/ijtld.18.0524] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
<sec> <title>SETTING</title> The proportion of bacteriologically confirmed tuberculosis (TB) in China has decreased far below the worldwide average. </sec> <sec> <title>OBJECTIVE</title> To investigate whether stepwise measures to ensure sputum quality can improve the rate of bacteriologically confirmed TB. </sec> <sec> <title>DESIGN</title> We enrolled 980 adults with suspected TB from three counties in China during 2017 for this multicentre randomised controlled trial. Half the participants (n = 490) were randomly assigned to intervention groups that received instructions by a study nurse, and sputum induction, if necessary. In the remaining 490 patients, sputum samples were collected without observation. The primary outcome was the proportion of patients detected as bacteriologically positive on smear, culture or molecular assays (EasyNAT or Xpert). </sec> <sec> <title>RESULTS</title> Bacteriological confirmation rates were significantly higher in the intervention than in the control group: overall (159/490 [32%] vs. 122/490 [25%]; P = 0.009); confirmation using smear (17% vs. 11%; P = 0.010); confirmation using culture (28% vs. 21%; P = 0.021); and confirmation using molecular assays (27% vs. 18%; P = 0.001). Most of the improvement was in patients who received instruction alone, while improvement was greatest in younger patients (adjusted odds ratio 1.27, 95%CI 1.05-1.53 per 10 years). </sec> <sec> <title>CONCLUSIONS</title> If implemented effectively in resource-limited primary care clinics, our simple stepwise procedure combining instruction and sputum induction could increase the proportion of bacteriologically confirmed TB significantly. </sec>.
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Affiliation(s)
- Q Jiang
- Shenzhen Center for Chronic Disease Control, Shenzhen, Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences and Shanghai Public Health Clinical Center, Fudan University, Shanghai
| | - L Ji
- Shenzhen Center for Chronic Disease Control, Shenzhen
| | - Y Qiu
- Wusheng County Center for Disease Control and Prevention, Wusheng, Guangan
| | - X Su
- Wuchang City Center for Tuberculosis Control and Prevention, Wuchang, Harbin, China
| | - M Guo
- Wusheng County Center for Disease Control and Prevention, Wusheng, Guangan
| | - S Zhong
- Wuchang City Center for Tuberculosis Control and Prevention, Wuchang, Harbin, China
| | - Z Yang
- Shenzhen Center for Chronic Disease Control, Shenzhen
| | - Z Zhang
- Wusheng County Center for Disease Control and Prevention, Wusheng, Guangan
| | - R Qu
- Wusheng County Center for Disease Control and Prevention, Wusheng, Guangan
| | - R Bian
- Wuchang City Center for Tuberculosis Control and Prevention, Wuchang, Harbin, China
| | - C Chen
- Wuchang City Center for Tuberculosis Control and Prevention, Wuchang, Harbin, China
| | - L Meng
- Shenzhen Center for Chronic Disease Control, Shenzhen
| | - Z Zhuo
- Shenzhen Center for Chronic Disease Control, Shenzhen
| | - W Tan
- Shenzhen Center for Chronic Disease Control, Shenzhen
| | - H E Takiff
- Integrated Mycobacterial Pathogenomics Unit, Institut Pasteur, Paris, France, Nanshan Center for Chronic Disease Control, Shenzhen, China
| | - W Yu
- Shenzhen Center for Chronic Disease Control, Shenzhen
| | - Q Gao
- Shenzhen Center for Chronic Disease Control, Shenzhen, Key Laboratory of Medical Molecular Virology, School of Basic Medical Sciences and Shanghai Public Health Clinical Center, Fudan University, Shanghai
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Zhuo Z, Lamont SJ, Abasht B. 0312 Investigation of genomic imprinting through allelic expression analysis of mRNA in chicken embryonic brain and liver. J Anim Sci 2016. [DOI: 10.2527/jam2016-0312] [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: 11/13/2022] Open
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Zhuo Z, Lamont SJ, Abasht B. P2012 Investigation of genomic imprinting in chicken embryonic brain and liver through RNA sequencing. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement443a] [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: 11/13/2022] Open
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Zhuo Z, Cai XY. Radiological follow-up results of untreated anterior disc displacement without reduction in adults. Int J Oral Maxillofac Surg 2015; 45:308-12. [PMID: 26682646 DOI: 10.1016/j.ijom.2015.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 09/24/2015] [Accepted: 11/12/2015] [Indexed: 10/22/2022]
Abstract
The aim of this study was to assess the radiographic changes in untreated adults with bilateral anterior disc displacement without reduction. A cohort study was designed to compare the bone changes, effusion, disc configuration, and pseudo-disc changes on two magnetic resonance images obtained at least 24 months apart. Twenty-eight patients (22 female, six male) with a mean age of 33.1 years (range 20-57 years) were included. The mean interval between the initial visit and the follow-up visit was 36.2 months. At the initial visit, the frequencies of bone changes, effusion, disc deformation, and pseudo-disc changes were 51.79%, 35.71%, 100%, and 0%, respectively. At follow-up, the frequency of effusion had decreased significantly. The frequency of bone changes had increased significantly to 75%, but newly formed cortical bone was present in five condyles. All discs remained deformed. Pseudo-disc changes were detected in five joints. Over a long period of observation, there was a significant decrease in effusion and a significant increase in bone changes. However, some adaptive changes occurred.
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Affiliation(s)
- Z Zhuo
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China
| | - X Y Cai
- Department of Oral and Maxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, China.
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Yue M, Fang SL, Zhuo Z, Li DD, Feng J. Zinc glycine chelate absorption characteristics in Sprague Dawley rat. J Anim Physiol Anim Nutr (Berl) 2014; 99:457-64. [DOI: 10.1111/jpn.12255] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 09/04/2014] [Indexed: 11/27/2022]
Affiliation(s)
- M. Yue
- The Key Laboratory of Molecular Animal Nutrition; Ministry of Education; College of Animal Sciences; Zhejiang University; Hangzhou China
| | - S. L. Fang
- The Key Laboratory of Molecular Animal Nutrition; Ministry of Education; College of Animal Sciences; Zhejiang University; Hangzhou China
| | - Z. Zhuo
- The Key Laboratory of Molecular Animal Nutrition; Ministry of Education; College of Animal Sciences; Zhejiang University; Hangzhou China
| | - D. D. Li
- The Key Laboratory of Molecular Animal Nutrition; Ministry of Education; College of Animal Sciences; Zhejiang University; Hangzhou China
| | - J. Feng
- The Key Laboratory of Molecular Animal Nutrition; Ministry of Education; College of Animal Sciences; Zhejiang University; Hangzhou China
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Da H, Gowers K, Dongwei W, Dawang L, Zhuo Z, Millard S. Corrosion assessment of reinforced concrete structures in corrosive environments in Chinese chemical industry. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/000705901101501424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Fang C, Zhuo Z, Fang S, Yue M, Feng J. Iron sources on iron status and gene expression of iron related transporters in iron-deficient piglets. Anim Feed Sci Technol 2013. [DOI: 10.1016/j.anifeedsci.2013.03.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bin L, Yuehui W, Lishuang W, Zhuo Z, Xiaodong W. e0064 Micro RNAs are involved in the psychological stress-induced cardiac disorders in rats. Heart 2010. [DOI: 10.1136/hrt.2010.208967.64] [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: 11/03/2022]
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Zhijun X, Shulan Z, Zhuo Z. Expression and significance of the protein and mRNA of metastasis suppressor gene ME491/CD63 and integrin alpha5 in ovarian cancer tissues. EUR J GYNAECOL ONCOL 2007; 28:179-83. [PMID: 17624082] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
PURPOSE To investigate the expression and significance of the proteins and mRNA of metastasis suppressor gene Me491/cd63 and integrin alpha5 in ovarian cancer tissues. METHODS RT-PCR and in situ hybridization were used to detect the expression of the proteins and mRNA of ME491/CD63 and integrin alpha5 in normal ovarian tissues (Group I), ovarian benign tumor tissues (Group II), ovarian borderline tumor tissues (Group III) and ovarian cancer tissues (Group IV), and the correlation between the expression and the age of patient, degree of differentiation, lymphatic metastasis, stage and pathological type was analyzed. RESULTS There was a significant change in gene expression between the well and moderately differentiated tumors and poorly differentiated tumors. Gene expression in Groups III and IV was significantly weak, and significantly different from that in Group II and the early-stages of Groups III and IV. There was a significant difference in gene expression between each group. CONCLUSION There is low expression of the proteins and mRNA of ME491/CD63 and integrin alpha5 in ovarian cancer. The lower the pathological differentiation is, the more significant the loss of expression is and the more likely metastasis is.
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Affiliation(s)
- X Zhijun
- Department of Obstetrics and Gynecology, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
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Cunningham-Rundles C, Bodian C, Ochs HD, Martin S, Reiter-Wong M, Zhuo Z. Long-term low-dose IL-2 enhances immune function in common variable immunodeficiency. Clin Immunol 2001; 100:181-90. [PMID: 11465947 DOI: 10.1006/clim.2001.5052] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Common variable immunodeficiency (CVID) is a primary immunodeficiency disease characterized by hypogammaglobulinemia and lack of antibody production. Numerous T cell defects have been described, including reduced gene expression and production of IL-2. Since some of the T cell defects could be explained by lack of IL-2, we have been investigating the effects of in vivo IL-2 treatment. Here, a long-acting form of IL-2, PEG-IL-2, was given for 12-18 months to 15 randomly chosen CVID subjects, in comparison to 39 CVID subjects who served as controls. After 6 to 12 months of treatment, T cell proliferative responses to mitogens and to IL-2 were significantly enhanced; proliferative responses to tetanus and candida antigens increased up to 50-fold. Four of eight subjects immunized with the neoantigen bacteriophage φX 174 displayed increased antibody responses after treatment. Treated subjects recorded reduced, but not overall statistically significant, days of bronchitis, diarrhea, and joint pain. These data indicate that IL-2 might serve as an adjuvant to therapy in some subjects with CVID, enhancing T cell functions and reversing T cell anergy in most.
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Affiliation(s)
- C Cunningham-Rundles
- Department of Medicine, Mount Sinai School of Medicine, New York, New York 10029, USA.
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Xiong Y, Jia Y, Wang H, Liu G, Ren H, Zhuo Z, Zhang D. Hepatitis B virus transgenic mice for the model of anti-hepatitis B virus drug study. Zhonghua Gan Zang Bing Za Zhi 2001; 9:19-21. [PMID: 11242128] [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: 02/19/2023]
Abstract
OBJECTIVE To establish hepatitis B virus (HBV) transgenic mice models and to investigate if the model can be used for the evaluation of anti-HBV drugs. METHODS HBV transgenic mice models were produced by microinjection to analyze the integration, expression of HBV in the transgenic mice by nested PCR, southern blot, immunohistochemistry, and ELISA. Sixty mice whose HBV DNA, HBsAg were positive were divided into 6 groups randomly, in which 3 groups were given drugs: lamivudine administrated by perfusion of stomach tube (100mg x kg(-1) x day(-1) for 21 days); thymosine administrated by abdomen injection (3mg x day(-1) for 90 days); and DNA vaccine of 100 microg by muscle injection. The other 3 groups were negative control. RESULTS Lamivudine, thymosine and DNA vaccine made HBV DNA become negative in the serum of HBV transgenic mice. The negative ratio was highest in lamivudine treatment group. HBV DNA became positive again when lamivudine terminated. CONCLUSION Limvudine, thymosine, and DNA vaccine can inhibit HBV replication. Transgenic mice might be used as the model for anti-HBV drug screening and evaluation.
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Affiliation(s)
- Y Xiong
- Transgenic Engineering Lab, Inrections Disease Centre of PLA, 458th Hospital of PLA, Guangzhou 510602, China
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Xu T, Su W, Zhuo Z. [Determination of lead in cosmetic by graphite furnace atomic absorption spectrometry]. Guang Pu Xue Yu Guang Pu Fen Xi 1997; 17:94-98. [PMID: 15810228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A method is described for the determination of Pb in cosmetic by graphite furnace AAS. The samples were directly determined after most of them were solved. The dynamic range,detection limit, relative standard deviation and recovery are 0.020ng-1.6ng, 0.010ng, 0. 8-6.7%, 97-104% respectrively.
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Affiliation(s)
- T Xu
- Guangzhou Health and Anti-Epidemic Station, 510080 Guangzhou
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Zhuo Z, Tsai YJ, Ackerman E, Gatewood L. Polychotomous multivariate models for coronary heart disease simulation. IV. The impact of physiological aging. Int J Biomed Comput 1994; 37:287-96. [PMID: 7705909 DOI: 10.1016/0020-7101(94)90126-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
This is an extension of a series of papers dealing with certain models used in the simulation of coronary heart disease. The current study investigates implications of including age as a risk factor in the models discussed in the preceding papers. The effects of using age as a risk factor were investigated in two ways. In one of these, age is interpreted as age of entry into the study; it is similar to the other risk factors in that it is assumed to be constant throughout the study. In the other, age is interpreted as the actual age; thus it increases during the course of simulations. Two polychotomous, multivariate risk functions developed in previous studies, the logistic risk and the Neyman exponential risk, were used to explore the effects of including age as a risk factor. The estimated risk coefficient for age was found to be statistically significant for both functions. The model performance was evaluated by comparing the observational data with outcomes simulated using Monte Carlo techniques. It was found that the logistic risk function failed to describe the observations either with age as a constant or with aging during the simulations. The models including the Neyman exponential risk avoidance fit the data well. The evaluation of the results indicates that aging during the simulations is better than using only the age as the constant value at entry to the study.
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Affiliation(s)
- Z Zhuo
- Micropopulation Simulation Resource, Health Computer Sciences, University of Minnesota, Minneapolis 55455
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Abstract
This paper investigates domains of drug injection behavior and the association of derived factors to HIV serostatus. Two sets of data were randomly selected and matched from a national data set of over 40,000 drug injectors. One set was HIV seropositive and the other HIV seronegative heterosexual injectors. Samples were matched to control for the effects of race/ethnicity, gender, and age on serostatus. Factor analysis was used to investigate relationships among drug injection behaviors. Four independent factors were found. Two factors were found to be statistically related to HIV serostatus in high seroprevalence areas. None of the needle use factors was found to be significantly associated with serostatus in low seroprevalence areas.
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Affiliation(s)
- Z Zhuo
- Affiliated Systems Corporation, Houston, Texas 77027-6022
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Ackerman E, Zhuo Z, Altmann M, Kilis D, Yang JJ, Seaholm S, Gatewood L. Simulation of stochastic micropopulation models--I. The SUMMERS simulation shell. Comput Biol Med 1993; 23:177-98. [PMID: 8334861 DOI: 10.1016/0010-4825(93)90020-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A generic, abstract model and the simulation shell based on it, both called SUMMERS, are used as a framework for the implementation of stochastic micropopulation models; in these, each individual is followed separately while moving through a sequence of states. The shell supports groups of interacting members, individual characteristics and multiple simultaneous activities. Stochastic decisions may be made using Monte Carlo rules. Keywords control the simulations and the reports generated. A sensitivity analysis utility allows assessment of the dependency of outcomes on model features. Extensive use has been made of software engineering techniques. Specializations of SUMMERS are described in subsequent papers.
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Affiliation(s)
- E Ackerman
- National Micropopulation Simulation Resource, Health Computer Sciences, University of Minnesota, Minneapolis 55455
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Peterson D, Gatewood L, Zhuo Z, Yang JJ, Seaholm S, Ackerman E. Simulation of stochastic micropopulation models--II. VESPERS: epidemiological model implementations for spread of viral infections. Comput Biol Med 1993; 23:199-213. [PMID: 8334862 DOI: 10.1016/0010-4825(93)90021-r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
This second paper concerning stochastic micropopulation simulations describes VESPERS, which can serve as a framework for simulation models of the epidemic spread of infection. The versions described are implemented using the simulation shell, SUMMERS, which includes the generic commonalities of several micropopulation models. Population members in VESPERS move through states related to the individual's status relative to the infective agent. Features of the models include mixing groups, member demographics, susceptibility and infectiousness, and co-circulation of infectious agents. The sensitivity of the simulation outcomes to quantitative features of the model has been analyzed. The user can select reports of desired distributions and averages of simulation outcomes.
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Affiliation(s)
- D Peterson
- National Micropopulation Simulation Resource, Health Computer Sciences, University of Minnesota, Minneapolis 55455
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Kilis D, Gatewood L, Zhuo Z, Hatfield G, Seaholm S, Ackerman E. Simulation of stochastic micropopulation models--III. COGNET: an artificial neural network for visual recognition. Comput Biol Med 1993; 23:215-25. [PMID: 8334863 DOI: 10.1016/0010-4825(93)90022-s] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
COGNET, based on a neural network first described by Fukushima, demonstrates the relationship between connectionist and other micropopulation models. Its success and physiological orientation led to an implementation using the SUMMERS simulation shell. After self-supervised learning, COGNET uses forward and backward propagation of signals to recognize partial and noisy patterns, and to reconstruct the originals. Stochastic features include variable thresholds for neuronal firing and occasional cell death. The successful implementation of COGNET demonstrates the generality of the concepts embodied in SUMMERS, which in turn promotes the reusability of software and facilitates the extension of computational models in biomedical research. COGNET itself forms a framework for building other physiologically oriented neural network models.
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Affiliation(s)
- D Kilis
- National Micropopulation Simulation Resource, Health Computer Sciences, University of Minnesota, Minneapolis 55455
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Qu B, Zhuo Z, Yi Y, Feng G, Zheng J, Liang Q, Li Y. Dynamic investigation on chromosome aberration of a human retinoblastoma cell line So-Rb50. Yan Ke Xue Bao 1993; 9:38-9, 37. [PMID: 8253183] [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: 01/29/2023]
Abstract
G-banding and karyotype analyses of cells in seventeen passages of SO-Rb50 during a long period of culture for about four years were performed. Three chromosome markers 13q14-, 1p36+ and 12p13+ were found. Cells possessed 13q14- reduced to zero after the 200th passage while 1p+ and 12p+ cells increased to 100% after 30 and 200 passages respectively. Abnormal chromosomes, ring chromosomes, chromosome radiuses and double minutes were also observed. These chromosomal changes were more often seen before the 200th passage. The significance of these changes are discussed.
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Affiliation(s)
- B Qu
- Cancer center, Sun Yat-Sen University of medical Sciences, Guangzhou, China
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Cunningham-Rundles C, Zhuo Z, Griffith B, Keenan J. Biological activities of polyethylene-glycol immunoglobulin conjugates. Resistance to enzymatic degradation. J Immunol Methods 1992; 152:177-90. [PMID: 1500728 DOI: 10.1016/0022-1759(92)90139-k] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Serum IgG has been covalently bonded to polyethylene glycols of either 2000 or 8000 molecular weight to produce immunoglobulin conjugates with 4.4-27.2% of primary amines bonded to polyethylene glycol. Polyethylene glycol immunoglobulin conjugates retain the ability, comparable to native IgG, to bind to a range of protein and microbial antigens, but have a reduced ability to bind to Fc receptors or to fix complement C3. When 6.8% or more of available primary amines are conjugated, IgG-PEG conjugates are impervious to trypsin, and at 14% or more conjugation, more resistant than native IgG to pepsin and chymotrypsin. We suggest that PEG-Ig conjugates may be useful for the oral treatment of various gastrointestinal diseases in which secretory humoral immunity is insufficient.
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Cerniglia CE, Zhuo Z, Manning BW, Federle TW, Heflich RH. Mutagenic activation of the benzidine-based dye direct black 38 by human intestinal microflora. Mutat Res 1986; 175:11-6. [PMID: 3528841 DOI: 10.1016/0165-7992(86)90138-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Abstract
The human hepatoma cell line Hep G2 was used to activate promutagenic chemicals to mutagens in a modified Salmonella typhimurium reversion assay. Hep G2 cells mediated positive mutagenic responses in tester strain TA98 with 5 and 25 micrograms/plate of 2-aminofluorene, but these responses were consistently lower than those seen using primary rat hepatocytes. In addition, 3 and 6 X 10(6) Hep G2 cells per assay produced positive mutagenic responses with 2-aminoanthracene, benzidine, acetylbenzidine and aflatoxin B1, while benzo[a]pyrene, 7,12-dimethylbenz[a]anthracene, 3-methylcholanthrene, 4-aminobiphenyl and 4- and 11-aminobenzo[a]pyrene were nonmutagenic with Hep G2-cell activation. These results indicate that Hep G2 cells may be a useful intact cellular metabolizing system of human origin for predicting the genotoxicity of promutagenic agents, but that the use of Salmonella as a target cell may limit the classes of mutagens detected.
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