1
|
Liu Z, Fu Y, Huang W, Li C, Wei X, Zhan J, Zheng J. LINC01094 promotes human nasal epithelial cell epithelial-to-mesenchymal transition and pyroptosis via upregulating HMGB1. Rhinology 2024; 62:88-100. [PMID: 37864411 DOI: 10.4193/rhin23.184] [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: 10/22/2023]
Abstract
BACKGROUND Excessive epithelial-to-mesenchymal transition (EMT) of nasal epithelial cells (NECs) play a prominent role in chronic rhinosinusitis with nasal polyps (CRSwNP) pathogenesis. Long intergenic non-coding RNA 01094 (LINC01094) was previously reported to be overexpressed in CRSwNP, while the regulatory mechanism by which LINC01094 regulates CRSwNP progression remains unclear. Our study aimed to investigate the role of LINC01094 in CRSwNP development. METHODS hNEC were isolated from tissues of controls and CRSwNP patients and stimulated with interleukin (IL)-13. 3-(4, 5-Dimethylthiazolyl2)-2, 5-diphenyltetrazolium bromide (MTT) assay was employed to analyze hNEC viability. Flow cytometry was employed to analyze pyroptosis. Immunofluorescence was employed to analyze Snail nuclear translocation. The interactions between LINC01094, fused in sarcoma (FUS) and high mobility group box-1 (HMGB1) were analyzed by RNA immunoprecipitation (RIP) and RNA pull-down assays. RESULTS LINC01094 and EMT-related proteins were markedly upregulated in nasal polyp tissues of CRSwNP. LINC01094 knockdown inhibited IL-13-induced hNEC EMT and pyroptosis. LINC01094 promoted HMGB1 expression in CRSwNP by binding with FUS. HMGB1 promoted Snail nuclear import in GSK-B phosphorylation-dependent manner. CONCLUSION LINC01094 facilitated hNEC EMT and pyroptosis in CRSwNP by activating the HMGB1/GSK-B Snail axis, which suggested that LINC01094 might serve as a biomarker and therapeutic target in CRSwNP.
Collapse
Affiliation(s)
- Z Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, P.R. China
| | - Y Fu
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, P.R. China
| | - W Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, P.R. China
| | - C Li
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, P.R. China
| | - X Wei
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, P.R. China
| | - J Zhan
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, P.R. China
| | - J Zheng
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, P.R. China
| |
Collapse
|
2
|
Bai J, Qu Y, Huang W, Meng W, Zhan J, Wang H, Hou W, Jin Y, Mao A, Song F. A high-fidelity long-read sequencing-based approach enables accurate and effective genetic diagnosis of spinal muscular atrophy. Clin Chim Acta 2024; 553:117743. [PMID: 38158006 DOI: 10.1016/j.cca.2023.117743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/08/2023] [Accepted: 12/21/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND We aimed to develop a high-fidelity long-read sequencing (LRS)-based approach to detect SMN gene variants in one step. It is challenging for conventional step-wise methods to simultaneously detect all kinds of variations between homologous SMN1 and SMN2. METHODS In this study, LRS was developed to analyze copy numbers (CNs), full sequences, and structure of SMN1 and SMN2. The results were compared with those from the step-wise methods in 202 samples from 67 families. RESULTS LRS achieved 100% (202/202) and 99.5% (201/202) accuracy for SMN1 and SMN2 CNs, respectively. It corrected SMN1 CNs from MLPA, which was caused by SNVs/indels that located in probe-binding region. LRS identified 23 SNVs/indels distributing throughout SMN1, including c.22dup and c.884A > T in trans-configuration, and a de novo variant c.41_42delinsC for the first time. LRS also identified a SMN2 variant c.346A > G. Moreover, it successfully determined Alu-mediated 8978-bp deletion encompassing exon 2a-5 and 1415-bp deletion disrupting exon 1, and the exact breakpoints of large deletions. Through haplotype-based pedigree trio analysis, LRS identified SMN1 2 + 0 carriers, and determined the distribution of SMN1 and SMN2 on two chromosomes. CONCLUSIONS LRS represents a more comprehensive and accurate diagnosis approach that is beneficial to early treatment and effective management of SMA.
Collapse
Affiliation(s)
- Jinli Bai
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing 100020, China
| | - Yujin Qu
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing 100020, China
| | - Wenchen Huang
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing 100020, China
| | - Wanli Meng
- Berry Genomics Corporation, Beijing 102200, China
| | - Jiahan Zhan
- Berry Genomics Corporation, Beijing 102200, China
| | - Hong Wang
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing 100020, China
| | - Wenqi Hou
- Berry Genomics Corporation, Beijing 102200, China
| | - Yuwei Jin
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing 100020, China
| | - Aiping Mao
- Berry Genomics Corporation, Beijing 102200, China.
| | - Fang Song
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing 100020, China.
| |
Collapse
|
3
|
Li S, Han X, Zhang L, Xu Y, Chang C, Gao L, Zhan J, Hua R, Mao A, Wang Y. An Effective and Universal Long-Read Sequencing-Based Approach for SMN1 2 + 0 Carrier Screening through Family Trio Analysis. Clin Chem 2023; 69:1295-1306. [PMID: 37932106 DOI: 10.1093/clinchem/hvad152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/28/2023] [Indexed: 11/08/2023]
Abstract
BACKGROUND Population-wide carrier screening for spinal muscular atrophy (SMA) is recommended by professional organizations to facilitate informed reproductive options. However, genetic screening for SMN1 2 + 0 carriers, accounting for 3%-8% of all SMA carriers, has been challenging due to the large gene size and long distance between the 2 SMN genes. METHODS Here we repurposed a previously developed long-read sequencing-based approach, termed comprehensive analysis of SMA (CASMA), to identify SMN1 2 + 0 carriers through haplotype analysis in family trios (CASMA-trio). Bioinformatics pipelines were developed for accurate haplotype analysis and SMN1 2 + 0 deduction. Seventy-nine subjects from 24 families composed of, at the minimum, 3 were enrolled, and CASMA-trio was employed to determine whether an index subject with 2 SMN1 copies was a 2 + 0 carrier in these families. For the proof-of-principle, SMN2 2 + 0 was also analyzed. RESULTS Among the 16 subjects with 2 SMN1 copies, CASMA-trio identified 5 subjects from 4 families as SMN1 2 + 0 carriers, which was consistent with pedigree analysis involving an affected proband. CASMA-trio also identified SMN2 2 + 0 in six out of 43 subjects with 2 SMN2 copies. Additionally, CASMA-trio successfully determined the distribution pattern of SMN1 and SMN2 genes on 2 alleles in all 79 subjects. CONCLUSIONS CASMA-trio represents an effective and universal approach for SMN1 2 + 0 carriers screening, as it does not reply on the presence of an affected proband, certain single-nucleotide polymorphisms, ethnicity-specific haplotypes, or complicated single-nucleotide polymorphism analysis across 3 generations. Incorporating CASMA-trio into existing SMA carrier screening programs will greatly reduce residual risk ratio.
Collapse
Affiliation(s)
- Shuyuan Li
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
- Institute of Birth Defects and Rare Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Xu Han
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
- Institute of Birth Defects and Rare Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Liang Zhang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
- Institute of Birth Defects and Rare Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Yan Xu
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
- Institute of Birth Defects and Rare Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Chunxin Chang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
- Institute of Birth Defects and Rare Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Li Gao
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
- Institute of Birth Defects and Rare Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Jiahan Zhan
- Berry Genomics Corporation, Beijing 102200, China
| | - Renyi Hua
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
- Institute of Birth Defects and Rare Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Aiping Mao
- Berry Genomics Corporation, Beijing 102200, China
| | - Yanlin Wang
- International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai 200030, China
- Institute of Birth Defects and Rare Diseases, School of Medicine, Shanghai Jiao Tong University, Shanghai 200030, China
| |
Collapse
|
4
|
Hou F, Mao A, Shan S, Li Y, Meng W, Zhan J, Nie W, Jin H. Evaluating the clinical utility of a long-read sequencing-based approach in genetic testing of fragile-X syndrome. Clin Chim Acta 2023; 551:117614. [PMID: 38375623 DOI: 10.1016/j.cca.2023.117614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/19/2023] [Accepted: 10/22/2023] [Indexed: 02/21/2024]
Abstract
BACKGROUND Fragile X syndrome (FXS) arises from the FMR1 CGG expansion. Comprehensive genetic testing for FMR1 CGG expansions, AGG interruptions, and microdeletions is essential to provide genetic counseling for females carrying premutation alleles. However, conventional PCR-based FMR1 assays mainly focus on CGG repeats, and could detect AGG interruption only in males. METHODS The clinical utility of a long-read sequencing-based assay termed comprehensive analysis of FXS (CAFXS) was evaluated in 238 high-risk samples by comparing to conventional PCR assays. RESULTS PCR assays identified five premuation and three full mutation categories alleles in all the samples, and CAFXS successfully called all the FMR1 CGG expansion. CAFXS identified 24-bp microdeletions upstream to the trinucleotide region with 30 CGG repeats, which was miscalled by the length-based PCR methods. CAFXS also identified a 187-bp deletion in about 1/7 of the sequencing reads in a male patient with mosaic full mutation alleles. CAFXS allowed for precise constructing the FMR1 CGG repeat and AGG interruption pattern in all the samples, and identified a novel and alternative CGA interruption in one normal female sample. CONCLUSIONS CAFXS represents a more comprehensive and accurate approach for FXS genetic testing that potentially enables more informed genetic counseling compared to PCR-based methods.
Collapse
Affiliation(s)
- Fei Hou
- Department of Prenatal Diagnosis, Jinan Maternal and Child Health Hospital, Jinan 250001, Shandong Province, China
| | - Aiping Mao
- Berry Genomics Corporation, Beijing 102200, China
| | - Shan Shan
- Department of Prenatal Diagnosis, Jinan Maternal and Child Health Hospital, Jinan 250001, Shandong Province, China
| | - Yan Li
- Department of Prenatal Diagnosis, Jinan Maternal and Child Health Hospital, Jinan 250001, Shandong Province, China
| | - Wanli Meng
- Berry Genomics Corporation, Beijing 102200, China
| | - Jiahan Zhan
- Berry Genomics Corporation, Beijing 102200, China
| | - Wenying Nie
- Department of Prenatal Diagnosis, Jinan Maternal and Child Health Hospital, Jinan 250001, Shandong Province, China
| | - Hua Jin
- Department of Prenatal Diagnosis, Jinan Maternal and Child Health Hospital, Jinan 250001, Shandong Province, China.
| |
Collapse
|
5
|
Liang Q, Liu Y, Liu Y, Duan R, Meng W, Zhan J, Xia J, Mao A, Liang D, Wu L. Comprehensive Analysis of Fragile X Syndrome: Full Characterization of the FMR1 Locus by Long-Read Sequencing. Clin Chem 2022; 68:1529-1540. [PMID: 36171182 DOI: 10.1093/clinchem/hvac154] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 07/21/2022] [Indexed: 11/14/2022]
Abstract
BACKGROUND Fragile X syndrome (FXS) is the most frequent cause of inherited X-linked intellectual disability. Conventional FXS genetic testing methods mainly focus on FMR1 CGG expansions and fail to identify AGG interruptions, rare intragenic variants, and large gene deletions. METHODS A long-range PCR and long-read sequencing-based assay termed comprehensive analysis of FXS (CAFXS) was developed and evaluated in Coriell and clinical samples by comparing to Southern blot analysis and triplet repeat-primed PCR (TP-PCR). RESULTS CAFXS accurately detected the number of CGG repeats in the range of 93 to at least 940 with mass fraction of 0.5% to 1% in the background of normal alleles, which was 2-4-fold analytically more sensitive than TP-PCR. All categories of mutations detected by control methods, including full mutations in 30 samples, were identified by CAFXS for all 62 clinical samples. CAFXS accurately determined AGG interruptions in all 133 alleles identified, even in mosaic alleles. CAFXS successfully identified 2 rare intragenic variants including the c.879A > C variant in exon 9 and a 697-bp microdeletion flanking upstream of CGG repeats, which disrupted primer annealing in TP-PCR assay. In addition, CAFXS directly determined the breakpoints of a 237.1-kb deletion and a 774.0-kb deletion encompassing the entire FMR1 gene in 2 samples. CONCLUSIONS Long-read sequencing-based CAFXS represents a comprehensive assay for identifying FMR1 CGG expansions, AGG interruptions, rare intragenic variants, and large gene deletions, which greatly improves the genetic screening and diagnosis for FXS.
Collapse
Affiliation(s)
- Qiaowei Liang
- Department of Medical Genetics, Hunan Jiahui Genetics Hospital, Changsha, Hunan, China
| | - Yingdi Liu
- Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Yaning Liu
- Department of Medical Genetics, Hunan Jiahui Genetics Hospital, Changsha, Hunan, China
| | - Ranhui Duan
- Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Wanli Meng
- Berry Genomics Corporation, Beijing, China
| | | | - Jiahui Xia
- Department of Medical Genetics, Hunan Jiahui Genetics Hospital, Changsha, Hunan, China
| | - Aiping Mao
- Berry Genomics Corporation, Beijing, China
| | - Desheng Liang
- Department of Medical Genetics, Hunan Jiahui Genetics Hospital, Changsha, Hunan, China.,Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Lingqian Wu
- Department of Medical Genetics, Hunan Jiahui Genetics Hospital, Changsha, Hunan, China.,Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| |
Collapse
|
6
|
Zhan J, Yang SJ, Zhang W, Zhou DB, Zhang Y, Wang W, Wei C. [MYC and BCL-2 protein co-expression and prognosis of patients with diffuse large B-cell lymphoma: a propensity score matching analysis]. Zhonghua Xue Ye Xue Za Zhi 2022; 43:41-47. [PMID: 35231992 PMCID: PMC8980659 DOI: 10.3760/cma.j.issn.0253-2727.2022.01.009] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
目的 探究MYC/BCL-2蛋白双表达对弥漫大B细胞淋巴瘤(DLBCL)患者预后的影响,观察纳入DA-EPOCH-R(利妥昔单抗+依托泊苷+泼尼松+长春新碱+环磷酰胺+表阿霉素)、中枢神经系统预防治疗、移植等治疗因素后,双表达是否仍是DLBCL的独立预后不良因素。 方法 回顾性收集2015−2018年在北京协和医院血液科治疗且具有可用病理结果的223例初治DLBCL患者,75例MYC/BCL-2高表达的患者归为双表达组,从148例非双表达的患者中,应用倾向性评分(PSM),根据年龄、国际预后指数(IPI)评分、治疗选择等因素进行1∶1匹配,筛选出75例作为对照组,比较两组患者总生存(OS)及无进展生存(PFS)等方面的差异。 结果 PSM后双表达组和非双表达组的3年OS率分别为(69.8±5.5)%及(77.0±4.9)%(P=0.225),3年PFS率分别为(60.7±5.8)%及(65.3±5.5)%(P=0.390),差异均无统计学意义。R-CHOP方案(利妥昔单抗+环磷酰胺+阿霉素+长春新碱+泼尼松)治疗的亚组分析显示,双表达和非双表达患者的3年OS率分别为(61.3±7.5)%及(77.2±5.6)%(P=0.027),3年PFS率分别为(52.1±7.5)%及(70.6 ± 6.0)%(P=0.040),差异均具有统计学意义。多因素Cox回归分析显示年龄、Ann Arbor分期、细胞起源(COO)分型、是否进行中枢神经系统预防、是否进行移植是DLBCL患者预后的独立影响因素(P值均<0.05),而MYC/BCL-2蛋白双表达不是预后的影响因素。 结论 MYC/BCL-2蛋白双表达在R-CHOP方案治疗下与不良预后显著相关,但在DA-EPOCH-R、移植等治疗方案下,双表达对DLBCL的不良预后影响在一定程度上得到消除。
Collapse
Affiliation(s)
- J Zhan
- Department of Hematology, Chinese Academy of Medical Science & Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China
| | - S J Yang
- Department of Hematology, Chinese Academy of Medical Science & Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China
| | - W Zhang
- Department of Hematology, Chinese Academy of Medical Science & Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China
| | - D B Zhou
- Department of Hematology, Chinese Academy of Medical Science & Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China
| | - Y Zhang
- Department of Hematology, Chinese Academy of Medical Science & Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China
| | - W Wang
- Department of Hematology, Chinese Academy of Medical Science & Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China
| | - C Wei
- Department of Hematology, Chinese Academy of Medical Science & Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China
| |
Collapse
|
7
|
Liu J, Zhou H, Ma W, Zhang Y, Zhou T, Yang Y, Huang J, Zhao Y, Hong S, Zhan J, Zhao H, Huang Y, Fang W, Zhang L. MA03.05 DNA Damage Response (DDR) Gene Mutations and Correlation With Immunotherapy Response in NSCLC Patients. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.120] [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]
|
8
|
Patel M, Zhan J, Natarajan K, Flintham R, Davies N, Sanghera P, Grist J, Duddalwar V, Peet A, Sawlani V. Machine learning-based radiomic evaluation of treatment response prediction in glioblastoma. Clin Radiol 2021; 76:628.e17-628.e27. [PMID: 33941364 DOI: 10.1016/j.crad.2021.03.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 03/29/2021] [Indexed: 11/16/2022]
Abstract
AIM To investigate machine learning based models combining clinical, radiomic, and molecular information to distinguish between early true progression (tPD) and pseudoprogression (psPD) in patients with glioblastoma. MATERIALS AND METHODS A retrospective analysis was undertaken of 76 patients (46 tPD, 30 psPD) with early enhancing disease following chemoradiotherapy for glioblastoma. Outcome was determined on follow-up until 6 months post-chemoradiotherapy. Models comprised clinical characteristics, O6-methylguanine-DNA methyltransferase (MGMT) promoter methylation status, and 307 quantitative imaging features extracted from enhancing disease and perilesional oedema masks on early post-chemoradiotherapy contrast-enhanced T1-weighted imaging, T2-weighted imaging (T2WI), and apparent diffusion coefficient (ADC) maps. Feature selection was performed within bootstrapped cross-validated recursive feature elimination with a random forest algorithm. Naive Bayes five-fold cross-validation was used to validate the final model. RESULTS Top selected features included age, MGMT promoter methylation status, two shape-based features from the enhancing disease mask, three radiomic features from the enhancing disease mask on ADC, and one radiomic feature from the perilesional oedema mask on T2WI. The final model had an area under the receiver operating characteristics curve (AUC) of 0.80, sensitivity 78.2%, specificity 66.7%, and accuracy of 73.7%. CONCLUSION Incorporating a machine learning-based approach using quantitative radiomic features from standard-of-care magnetic resonance imaging (MRI), in combination with clinical characteristics and MGMT promoter methylation status has a complementary effect and improves model performance for early prediction of glioblastoma treatment response.
Collapse
Affiliation(s)
- M Patel
- University of Birmingham, Birmingham, UK; Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - J Zhan
- Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK; The Affiliated Hospital of Qingdao University, Qingdao Shi, Shandong Sheng, China
| | - K Natarajan
- Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - R Flintham
- Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - N Davies
- Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - P Sanghera
- University of Birmingham, Birmingham, UK; Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK
| | - J Grist
- University of Birmingham, Birmingham, UK
| | - V Duddalwar
- Departments of Radiology, Urology and Biomedical Engineering, University of Southern California, USA
| | - A Peet
- University of Birmingham, Birmingham, UK; Birmingham Children's Hospital, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - V Sawlani
- University of Birmingham, Birmingham, UK; Queen Elizabeth Hospital Birmingham, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.
| |
Collapse
|
9
|
Mohammadzadeh E, Muhiuddin G, Zhan J, Borzooei R. Nilpotent fuzzy lie ideals. IFS 2020. [DOI: 10.3233/jifs-200211] [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
In this paper, we introduce a new definition for nilpotent fuzzy Lie ideal, which is a well-defined extension of nilpotent Lie ideal in Lie algebras, and we name it a good nilpotent fuzzy Lie ideal. Then we prove that a Lie algebra is nilpotent if and only if any fuzzy Lie ideal of it, is a good nilpotent fuzzy Lie ideal. In particular, we construct a nilpotent Lie algebra via a good nilpotent fuzzy Lie ideal. Also, we prove that with some conditions, every good nilpotent fuzzy Lie ideal is finite. Finally, we define an Engel fuzzy Lie ideal, and we show that every Engel fuzzy Lie ideal of a finite Lie algebra is a good nilpotent fuzzy Lie ideal. We think that these notions could be useful to solve some problems of Lie algebras with nilpotent fuzzy Lie ideals.
Collapse
Affiliation(s)
| | - G. Muhiuddin
- Department of Mathematics, University of Tabuk, Tabuk, Saudi Arabia
| | - J. Zhan
- Department of Mathematics, Hubei University for Nationalities, Enshi, P.R. China
| | - R.A. Borzooei
- Department of Mathematics, Shahid Beheshti University, G. C., Tehran, Iran
| |
Collapse
|
10
|
Liu AP, Yuan QH, Zhang B, Yang L, He QW, Chen K, Liu QS, Li Z, Zhan J. Corrigendum to "Cannabinoid receptor 2 activation alleviates septic lung injury by promoting autophagy via inhibition of inflammatory mediator release" [Cellular signaling 69 (2020) 109556]. Cell Signal 2020; 72:109600. [PMID: 32199719 DOI: 10.1016/j.cellsig.2020.109600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- A P Liu
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - Q H Yuan
- Department of Anesthesiology, Renmin Hospital of Wuhan University, 430060 Wuhan, Hubei, People's Republic of China
| | - B Zhang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - L Yang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - Q W He
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - K Chen
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - Q S Liu
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China
| | - Z Li
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China.
| | - J Zhan
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, 430071 Wuhan, Hubei, People's Republic of China.
| |
Collapse
|
11
|
Dang W, Ma JT, Chen H, Yuan F, Ma XM, Zhan J. [Analysis of infection status and recombination types of norovirus in patients with acute gastroenteritis in the Ningxia Hui Autonomous Region from 2016 to 2017]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:811-816. [PMID: 31378041 DOI: 10.3760/cma.j.issn.0253-9624.2019.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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 analyze the infection status and recombination of Norovirus in patients with acute gastroenteritis in Ningxia. Methods: The specimens of 10 sentinel hospitals in Ningxia were collected from 2016 to 2017. Real-time quantitative PCR was used for nucleic acid detection. GⅡ-positive samples were amplified by RT-PCR for the RdRp and Capsid regions, then sequenced and genotyped. Evolution analysis was performed using software such as MEGA-X, and recombination analysis was performed using Simplot 3.5.1 and RDP4. Results: The age of the 2 334 cases was 1.42 (0.68, 7.69) years old, 1 133 cases in 2016 and 1 201 cases in 2017, 1 343 and 991 cases for males and females respectively. The positive rate of Norovirus GⅠ genogroup was 0.86% (20/2 334), and GⅡ genogroup was 14.82% (346/2 334). A total of 78 recombinant strains were sequenced and 12 recombinant types were found. GⅡ.Pe/GⅡ.4Sydney_2012 and GⅡ.P12/GⅡ.3 were the main epidemic strains, accounting for 35.90% (28 strains) and 32.05% (25 strain) respectively, followed by GⅡ.P16/GⅡ.2 accounting for 12.82% (10 strains). Among them,GⅡ.P7/GⅡ.6 (2 strains), GⅡ.P12/GⅡ.3 (6 strains), GⅡ.P16/GⅡ.1 (2 strains), GⅡ.P16/GⅡ.2 (5 strains), GⅡ.Pe/GⅡ.4 (7 strains) were detected for the first time in Ningxia. Recombinant strains were all intergenotype recombination, and the recombination breakpionts were all located within ORF1. Conclusion: Norovirus infection in Ningxia area was mainly in GⅡ genogroup from 2016 to 2017, and most of them were recombinant strains. GⅡ.Pe/GⅡ.4Sydney_2012 and GⅡ.P12/GⅡ.3 were the main epidemic strains, followed by GⅡ.P16/GⅡ. 2.
Collapse
Affiliation(s)
- W Dang
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - J T Ma
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - H Chen
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - F Yuan
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - X M Ma
- School of Public Health and Management of Ningxia Medical University, Yinchuan 750004, China
| | - J Zhan
- Viral Department, Ningxia Center for Disease Control and Prevention, Yinchuan 750004, China
| |
Collapse
|
12
|
Liu CL, Dong HG, Zhan J, Liu X, Yang Y. Multi-modular engineering for renewable production of isoprene via mevalonate pathway in Escherichia coli. J Appl Microbiol 2019; 126:1128-1139. [PMID: 30656788 DOI: 10.1111/jam.14204] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 01/02/2019] [Accepted: 01/08/2019] [Indexed: 01/18/2023]
Abstract
AIMS To establish the biotechnology platforms for production of bio-based chemicals in various micro-organisms is considered as a promising target to improve renewable production of isoprene. METHODS AND RESULTS In this study, we heterologously expressed the mevalonate (MVA) isoprene biosynthesis pathway, and explored three strategies of increasing isoprene production in Escherichia coli. We first manipulated the expression levels of the MVA pathway genes through changing the gene cassettes and promoters. To introduce cofactor engineering, we then overexpressed NADP-dependent glyceraldehyde-3-phosphate dehydrogenase gene from Clostridium acetobutylicum to supply available NADPH. To reduce the inhibitory by-product accumulation, we finally knocked out acetate-producing genes, phosphate acetyl transferase and pyruvate oxidase B in E. coliJM109 (DE3), decreasing acetate accumulation 89% and increasing isoprene production 39%. The strategies described here finally increased the isoprene titre to 92 mg l-1 in two-gene deletion strain JMAB-4T7P1Trc, increasing 2·6-fold comparing to strain JM7T7. CONCLUSION The multimodularly engineering approaches including promoter engineering, cofactor engineering and by-product reducing could be used to improve isoprene production in E. coli. SIGNIFICANCE AND IMPACT OF THE STUDY The metabolic strategies in this study show us directions for further studies to promote transformation of renewable sources to isoprene.
Collapse
Affiliation(s)
- C-L Liu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, China
| | - H-G Dong
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - J Zhan
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, China
| | - X Liu
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, China
| | - Y Yang
- National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,Jiangsu Provincial Research Center for Bioactive Product Processing Technology, Jiangnan University, Wuxi, China
| |
Collapse
|
13
|
Hu L, Cao H, Zhao J, Niu L, Chen Y, Zhou N, Zhan J, Yu H, Chen K, Li S, Sheng X, Shen J, Qin S, Feng C, Ge J, Zhang B, Zhang S. Design and test of irradiation-related components in ITER radial x-ray camera. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201817002003] [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: 11/14/2022] Open
|
14
|
Hong S, Chen N, Fang W, Zhan J, Zhang L. 397PD KRAS mutation-induced upregulation of PD-L1 mediates immune escape in lung adenocarcinoma. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw588.003] [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: 11/12/2022] Open
|
15
|
Hong S, Chen N, Fang W, Zhan J, Zhang L. 397PD KRAS mutation-induced upregulation of PD-L1 mediates immune escape in lung adenocarcinoma. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00555-x] [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: 10/22/2022] Open
|
16
|
Chen X, Li L, You Y, Mao B, Zhao W, Zhan J. The Effects of Ultra-high Pressure Treatment on the Phenolic Composition of Red Wine. S AFR J ENOL VITIC 2016. [DOI: 10.21548/33-2-1120] [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: 11/06/2022] Open
|
17
|
Liu SS, Zhan J, Chen H. [A clinical analysis of hyperthyroidism complicated by jaundice: a report of six typical cases]. Zhonghua Gan Zang Bing Za Zhi 2016; 24:537-538. [PMID: 27784435 DOI: 10.3760/cma.j.issn.1007-3418.2016.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- S S Liu
- Department of Emergency, the Second Affiliated Hospital, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China
| | | | | |
Collapse
|
18
|
Zhan J, He J, Zhou Y, Wu M, Liu Y, Shang F, Zhang X. Crosstalk Between the Autophagy-Lysosome Pathway and the Ubiquitin-Proteasome Pathway in Retinal Pigment Epithelial Cells. Curr Mol Med 2016; 16:487-95. [DOI: 10.2174/1566524016666160429121606] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 04/12/2016] [Accepted: 04/16/2016] [Indexed: 11/22/2022]
|
19
|
Zhang Q, Sun X, Sheng Q, Chen J, Huang W, Zhan J. Effect of Suspension Freeze-concentration Technology on the Quality of Wine. S AFR J ENOL VITIC 2016. [DOI: 10.21548/37-1-757] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
|
20
|
Zhu Z, Li W, Zhan J, Hu L, Wu L, Zhao Z. Adaptive behaviour of Chinese boys with fragile X syndrome. J Intellect Disabil Res 2016; 60:1-8. [PMID: 26344058 DOI: 10.1111/jir.12222] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Revised: 07/30/2015] [Accepted: 08/06/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Adaptive behaviour is closely related to quality of life in children with intellectual disability (ID), but little is known about the adaptive behaviour of children with fragile X syndrome (FXS) in China. METHOD In boys with FXS, the adaptive behaviours in six domains, including self-dependence, locomotion, work skills, communication, socialisation and self-management, were assessed by the Infants-Junior Middle School Students Social-life Abilities Scale. In addition, we compared the adaptive skills of boys with FXS to those of three control groups of boys, including boys with Down syndrome (DS) and typically developing (TD) boys matched by chronological age (CA) or mental age (MA). The profile of the adaptive behaviour of boys with FXS is discussed in detail. RESULTS Compared to boys with DS, boys with FXS obtained lower scores in three domains in adaptive behaviour, including work skills, socialisation and self-management skills; boys with FXS had better scores in self-dependence and locomotion skills than boys matched for MA; as expected, boys with FXS had significantly poorer adaptive skills in all six domains assessed compared to CA boys. CONCLUSION The development of adaptive skills in boys with FXS was worse than that of boys with DS. The profile of the adaptive behaviour of boys with FXS establishes a basis for the development of targeted interventions to promote social development in this population.
Collapse
Affiliation(s)
- Z Zhu
- Children's Hospital, Zhejiang University School of Medicine Developmental and Behavioral Pediatrics, Hangzhou, Zhejiang, China
| | - W Li
- Children's Hospital, Zhejiang University School of Medicine Developmental and Behavioral Pediatrics, Hangzhou, Zhejiang, China
| | - J Zhan
- Children's Hospital, Zhejiang University School of Medicine Developmental and Behavioral Pediatrics, Hangzhou, Zhejiang, China
| | - L Hu
- Children's Hospital, Zhejiang University School of Medicine Developmental and Behavioral Pediatrics, Hangzhou, Zhejiang, China
| | - L Wu
- Children's Hospital, Zhejiang University School of Medicine Developmental and Behavioral Pediatrics, Hangzhou, Zhejiang, China
| | - Z Zhao
- Children's Hospital, Zhejiang University School of Medicine Developmental and Behavioral Pediatrics, Hangzhou, Zhejiang, China
| |
Collapse
|
21
|
Zhan J, Wiler J, Jones C, Schroeder A, Favaro C, McLean R, Harpin S, Capp R. 137 Frequent Emergency Department Users: Describing Care Coordination Services. Ann Emerg Med 2015. [DOI: 10.1016/j.annemergmed.2015.07.169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
22
|
Sun X, Chen X, Li L, Ma T, Zhao F, Huang W, Zhan J. Effect of Ultra-high Pressure Treatment on the Chemical Properties, Colour and Sensory Quality of Young Red Wine. S AFR J ENOL VITIC 2015. [DOI: 10.21548/36-3-972] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
|
23
|
|
24
|
Gao H, Wu Y, Zhang T, Wu Y, Jiang L, Zhan J, Li J, Yang R. Multiple-trait genome-wide association study based on principal component analysis for residual covariance matrix. Heredity (Edinb) 2015; 114:428. [PMID: 25757542 DOI: 10.1038/hdy.2015.11] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
|
25
|
Retterath L, Zhan J, Bicker E, Ardary C, Joseph T, Law J, Jones J. 302 Prevalence of Sexually Transmitted Infection in Symptomatic Adolescents Presenting to the Emergency Department. Ann Emerg Med 2014. [DOI: 10.1016/j.annemergmed.2014.07.330] [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]
|
26
|
Retterath L, Bicker E, Zhan J, Law J, Joseph T, Ardary C, Jones J. 98 Diagnostic Usefulness of Endocervical Gram Stain Smears in Adolescents With Genitourinary Complaints. Ann Emerg Med 2014. [DOI: 10.1016/j.annemergmed.2014.07.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
27
|
Zhan J, Xiao F, Zhang ZZ, Wang YP, Chen K, Wang YL. Effect of penehyclidine hydrochloride on β-arrestin-1 expression in lipopolysaccharide-induced human pulmonary microvascular endothelial cells. Braz J Med Biol Res 2013; 46:1040-1046. [PMID: 24345913 PMCID: PMC3935276 DOI: 10.1590/1414-431x20133289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Accepted: 09/12/2013] [Indexed: 01/14/2023] Open
Abstract
β-arrestins are expressed proteins that were first described, and are well-known, as negative regulators of G protein-coupled receptor signaling. Penehyclidine hydrochloride (PHC) is a new anti-cholinergic drug that can inhibit biomembrane lipid peroxidation, and decrease cytokines and oxyradicals. However, to date, no reports on the effects of PHC on β-arrestin-1 in cells have been published. The aim of this study was to investigate the effect of PHC on β-arrestin-1 expression in lipopolysaccharide (LPS)-induced human pulmonary microvascular endothelial cells (HPMEC). Cultured HPMEC were pretreated with PHC, followed by LPS treatment. Muscarinic receptor mRNAs were assayed by real-time quantitative PCR. Cell viability was assayed by the methyl thiazolyl tetrazolium (MTT) conversion test. The dose and time effects of PHC on β-arrestin-1 expression in LPS-induced HPMEC were determined by Western blot analysis. Cell malondialdehyde (MDA) level and superoxide dismutase (SOD) activity were measured. It was found that the M3 receptor was the one most highly expressed, and was activated 5 min after LPS challenge. Furthermore, 2 μg/mL PHC significantly upregulated expression of β-arrestin-1 within 10 to 15 min. Compared with the control group, MDA levels in cells were remarkably increased and SOD activities were significantly decreased in LPS pretreated cells, while PHC markedly decreased MDA levels and increased SOD activities. We conclude that PHC attenuated ROS injury by upregulating β-arrestin-1 expression, thereby implicating a mechanism by which PHC may exert its protective effects against LPS-induced pulmonary microvascular endothelial cell injury.
Collapse
Affiliation(s)
- J Zhan
- Wuhan University, Zhongnan Hospital, Department of Anesthesiology, WuhanHubei, China
| | - F Xiao
- Huazhong University of Science and Technology, Department of Osteology, Pu Ai Hospital, WuhanHubei, China
| | - Z Z Zhang
- Wuhan University, Zhongnan Hospital, Department of Anesthesiology, WuhanHubei, China
| | - Y P Wang
- Wuhan University, Zhongnan Hospital, Department of Anesthesiology, WuhanHubei, China
| | - K Chen
- Wuhan University, Zhongnan Hospital, Department of Anesthesiology, WuhanHubei, China
| | - Y L Wang
- Wuhan University, Zhongnan Hospital, Department of Anesthesiology, WuhanHubei, China
| |
Collapse
|
28
|
Tian MG, Zhang PJ, Yang Y, Shang FJ, Zhan J. Two-port laparoscopic cholecystectomy with modified suture retraction of the fundus: A practical approach. J Minim Access Surg 2013; 9:122-5. [PMID: 24019690 PMCID: PMC3764655 DOI: 10.4103/0972-9941.115372] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 11/10/2012] [Indexed: 11/04/2022] Open
Abstract
CONTEXT Although transumbilical single incision laparoscopic cholecystectomy (SILC) has been demonstrated to be superior cosmetic, it is only limited to simple cases at present. In complex cases, the standard four- or three-port LC is still the treatment of choice. AIM To summarize the clinical effect of a modified technique in two-port LC. SETTINGS AND DESIGN A consecutive series of patients with benign gallbladder diseases admitted to the provincial teaching hospital who underwent LC in the past 4 years were included. A modified two-port LC was the first choice except for those requiring laparoscopic common bile duct exploration (LCBDE). MATERIALS AND METHODS The operation was done with suture retraction of the fundus by a needle-like retractor. The patients' data, including the operative time, time consumed by gallbladder retraction, operative bleeding, conversion rate, rate of adding trocars, and postoperative complications were recorded. STATISTICAL ANALYSIS Data were expressed as percentage and mean with standard deviation. RESULTS Total 107 patients with chronic calculous cholecystitis (N = 61), acute calculous cholecystitis (N = 43), and cholecystic polyps (N = 3) received two-port LC. The procedure was successful in 99 out of 107 cases (success rate, 92.5%), and a third trocar was added in the remaining 8 cases (7.5%) due to severe pathological changes. The operative time was 47.2 (±13.21) min. There was no conversion to open surgery. CONCLUSION Two-port LC using a needle-like retractor for suture retraction of the gallbladder fundus is a practical approach when considering the safety, convenience, and indications as well as relatively minimal invasion.
Collapse
Affiliation(s)
- Ming G Tian
- Department of Hepatobiliary Surgery, the People's Hospital of Ningxia Autonomous Region, Yinchuan, Ningxia, China
| | | | | | | | | |
Collapse
|
29
|
Li S, Jian FB, Zhan J, Zou BY, Liao H. Determination of Photocyanine in Human Serum by HPLC and Application to Pharmacokinetic Study. J Chromatogr Sci 2013; 52:766-72. [DOI: 10.1093/chromsci/bmt108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
30
|
Sugimoto R, Okamoto T, Nakao A, Zhan J, Wang Y, Kohmoto J, Tokita D, Farver CF, Tarpey MM, Billiar TR, Gladwin MT, McCurry KR. Nitrite reduces acute lung injury and improves survival in a rat lung transplantation model. Am J Transplant 2012; 12:2938-48. [PMID: 23016570 DOI: 10.1111/j.1600-6143.2012.04169.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Ischemia/reperfusion injury (IRI) is the most common cause of early mortality following lung transplantation (LTx). We hypothesized that nitrite, an endogenous source of nitric oxide (NO), may protect lung grafts from IRI. Rat lung grafts were stored in preservation solution at 4°C for 6 hours. Both grafts and recipients were treated with nitrite. Nitrite treatment was associated with significantly higher levels of tissue oxygenation, lower levels of cytokines and neutrophil/macrophage infiltration, lower myeloperoxidase activity, reduced oxidative injury and increased cGMP levels in grafts than in the controls. Treatment with either a nitric oxide scavenger or a soluble guanylyl cyclase (sGC) inhibitor diminished the beneficial effects of nitrite and decreased cGMP concentrations. These results suggest that nitric oxide, generated from nitrite, is the molecule responsible for the effects of nitrite via the nitric oxide/sGC/cGMP pathway. Allopurinol, a xanthine oxidoreductase (XOR) inhibitor, abrogated the protective effects of nitrite, suggesting that XOR is a key enzyme in the conversion of nitrite to nitric oxide. In vitro experiments demonstrated that nitrite prevented apoptosis in pulmonary endothelial cells. Nitrite also exhibits longer survival rate in recipients than control. In conclusion, nitrite inhibits lung IRI following cold preservation and had higher survival rate in LTx model.
Collapse
Affiliation(s)
- R Sugimoto
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Wang B, Lin H, Zhan J, Yang Y, Zhou Q, Zhao Y. Biodiesel synthesis by a one-step method in a genetically engineered Escherichia coli using rice straw hydrolysate and restaurant oil wastes as raw materials. J Appl Microbiol 2012; 113:531-40. [DOI: 10.1111/j.1365-2672.2012.05357.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2012] [Revised: 05/13/2012] [Accepted: 06/02/2012] [Indexed: 11/28/2022]
Affiliation(s)
- B. Wang
- Institute of Microbiology; College of Life Sciences; Zhejiang University; Hangzhou; China
| | - H. Lin
- Institute of Microbiology; College of Life Sciences; Zhejiang University; Hangzhou; China
| | - J. Zhan
- Institute of Plant Science; College of Life Sciences; Zhejiang University; Hangzhou; China
| | - Y. Yang
- Institute of Microbiology; College of Life Sciences; Zhejiang University; Hangzhou; China
| | - Q. Zhou
- Institute of Plant Science; College of Life Sciences; Zhejiang University; Hangzhou; China
| | - Y. Zhao
- Institute of Microbiology; College of Life Sciences; Zhejiang University; Hangzhou; China
| |
Collapse
|
32
|
Abstract
The articular disc plays an important role as a stress absorber in joint movement, resulting in stress reduction and redistribution in the temporomandibular joint (TMJ). The flow of synovial fluid in the TMJ may follow a regular pattern during movement of the jaw. We hypothesised that the regular pattern is disrupted when the TMJ disc is perforated. By computed tomography arthrography, we studied the upper TMJ compartment in patients with small disc perforation during jaw opening-closing at positions from 0 to 3 cm. Finite element fluid dynamic modelling was accomplished to analyse the pattern of fluid flow and pressure distribution during the movements. The results showed that the fluid flow in the upper compartment generally formed an anticlockwise circulation but with local vortexes with the jaw opening up to 2 cm. However, when the jaw opening-closing reached 3 cm, an abnormal flow field and the fluid pressure change associated with the perforation may increase the risk of perforation expansion or rupture and is unfavourable for self-repair of the perforated disc.
Collapse
Affiliation(s)
- Y Xu
- Department of Orthodontics, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, China
| | | | | | | | | | | | | |
Collapse
|
33
|
Srivastava K, Yang N, Chen Y, Lopez-Exposito I, Song Y, Goldfarb J, Zhan J, Sampson H, Li XM. Efficacy, safety and immunological actions of butanol-extracted Food Allergy Herbal Formula-2 on peanut anaphylaxis. Clin Exp Allergy 2010; 41:582-91. [DOI: 10.1111/j.1365-2222.2010.03643.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
34
|
Hartley C, Dyas G, Archibeque I, Al-Assaad A, Sun B, Lincoln P, Zhan J, Arvedson T, Molineux G. A comparison of potency of and intracellular signaling events provoked by, small molecule and protein-based mpl agonists. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e14624] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e14624 Background: Thrombopoietin (TPO) interacts with its receptor (mpl) to initiate signal transduction and increase platelet production. Other mpl agonists have been developed for clinical use: MDGF (a recombinant protein) and romiplostim (a peptibody) are protein-based mpl agonists; eltrombopag (a small molecule) is a nonpeptide mpl agonist. Methods: Mpl agonists were compared for their ability to induce cellular responses and activate relevant signaling pathways in mpl-expressing cells. Proliferation was assessed by ATP bioluminescence in Baf3/mpl cells treated with mpl agonists for 2 days. Differentiation was assessed by flow cytometric-detection of CD41 and CD61 expression on human CD34+ cells cultured with mpl agonists for 7 days. Activation of signaling pathways was determined by Western blot analysis of proteins from serum-starved Baf3/mpl cells treated with mpl agonists for 20 minutes. Experiments were repeated 3 or more times. Results: The TPO concentration that produced a half-maximal (EC50) proliferative response of Baf3/mpl cells was comparable with that of romiplostim (Table). In contrast, a 30-fold greater concentration of MGDF and a 2,000-fold greater concentration of small molecule were required to produce the same degree of proliferation. In addition, a 1,000,000-fold greater concentration of small molecule compared with romiplostim was required to produce an EC50 for differentiation of CD34+ cells. Mpl agonists activated identical signaling pathways in Baf3/mpl cells: a similar dose-response for phosphorylation of JAK2, Stat3, Stat5, Erk1/2, and AKT was observed at their respective EC10, EC50, and EC100 concentrations. Conclusions: In Baf3/mpl cells, the small molecule was between 1,000- and 1,000,000-fold less potent than protein-based mpl agonists when corrected for molecular mass differences. Small molecule and protein-based mpl agonists were indistinguishable when mpl intracellular signaling was compared at similarly effective concentrations. [Table: see text] [Table: see text]
Collapse
Affiliation(s)
| | - G. Dyas
- Amgen, Inc., Thousand Oaks, CA
| | | | | | - B. Sun
- Amgen, Inc., Thousand Oaks, CA
| | | | - J. Zhan
- Amgen, Inc., Thousand Oaks, CA
| | | | | |
Collapse
|
35
|
Zhan J, Nakao A, Sugimoto R, Wang Y, Wang Z, McCurry K. 331: Oral Administration of Nitrite or Nitrate, Abundant in the Mediterranean Diet, Attenuates Cardiac Allograft Rejection in Rats. J Heart Lung Transplant 2009. [DOI: 10.1016/j.healun.2008.11.338] [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] Open
|
36
|
Song Y, Zhan J, Yang N, Srivastava K, Li X. Inhibitory Effect Of Butanol Purified Herbal Formula FAHF-2 On Mast Cells. J Allergy Clin Immunol 2009. [DOI: 10.1016/j.jaci.2008.12.702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
37
|
Zhan J, Nakao A, Sugimoto R, Wang Y, Wang Z, McCurry K. 207. Orally Administered Nitrite Attenuates Cardiac Allograft Rejection in Rats. J Surg Res 2009. [DOI: 10.1016/j.jss.2008.11.249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
38
|
Nakao A, Wang Y, Zhan J, Sugimoto R, Franks J, Ross M, Stolz D, McCurry K. 116. Ex Vivo Carbon Monoxide Delivery Inhibites Intimal Hyperplasia in Arterialized Vein Grafts via a Mechanism Involving HIF-1α. J Surg Res 2009. [DOI: 10.1016/j.jss.2008.11.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
39
|
Nakao A, Kaczorowski D, Sugimoto R, Zhan J, Wang Y, McCurry K. 135: Combined Administration of Hydrogen Gas and Carbon Monoxide Is a Superior Strategy for Ameliorating Cardiac Cold Ischemia/Reperfusion Injury in Rats. J Heart Lung Transplant 2009. [DOI: 10.1016/j.healun.2008.11.813] [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] Open
|
40
|
Yang N, Zhan J, Li X. Effect of Butonal-extracted Food Allergy Herbal Formula 2 (FAFH2) and its sub-fractions on TNF-alpha production by macrophage cells. J Allergy Clin Immunol 2009. [DOI: 10.1016/j.jaci.2008.12.689] [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]
|
41
|
Ma X, Zhan J, Xiang D. Some types of generalized fuzzy filters of MTL-algebras. Journal of Intelligent & Fuzzy Systems 2009. [DOI: 10.3233/ifs-2009-0425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- X. Ma
- Department of Mathematics, Hubei Institute for Nationalities, Enshi, Hubei Province, 445000, P.R. China
| | - J. Zhan
- Department of Mathematics, Hubei Institute for Nationalities, Enshi, Hubei Province, 445000, P.R. China
| | - D. Xiang
- Department of Mathematics, Hubei Institute for Nationalities, Enshi, Hubei Province, 445000, P.R. China
| |
Collapse
|
42
|
Affiliation(s)
- J. Zhan
- Department of Mathematics, Hubei Institute for Nationalities, Enshi, Hubei Province, 445000, P.R. China
| | - B. Davvaz
- Department of Mathematics, Yazd University, Yazd, Iran
| | - K.P. Shum
- Department of Mathematics, The University of Hong Kong, Pokfulam Road, Hong Kong, China (SAR)
| |
Collapse
|
43
|
Ke JJ, Zhan J, Feng XB, Wu Y, Rao Y, Wang YL. A comparison of the effect of total intravenous anaesthesia with propofol and remifentanil and inhalational anaesthesia with isoflurane on the release of pro- and anti-inflammatory cytokines in patients undergoing open cholecystectomy. Anaesth Intensive Care 2008; 36:74-8. [PMID: 18326136 DOI: 10.1177/0310057x0803600113] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The aim of the study was to investigate the effects of two anaesthetic techniques (total intravenous technique vs. inhalational technique) on changes in pro- and anti-inflammatory cytokine levels during open cholecystectomy. Forty ASA PS I-II patients undergoing open cholecystectomy were randomly assigned to two groups. Group R received total intravenous anaesthesia with propofol and remifentanil and group F received balanced inhalational anaesthesia with isoflurane. The plasma levels of tumour necrosis factor-alpha (TNF-alpha), interleukin IL-6 and interleukin IL-10 were measured during and after surgery. The pro-inflammatory cytokine levels (TNF-alpha and IL-6) and the anti-inflammatory cytokine (IL-10) showed a significant increase in their concentrations compared with pre-induction levels in both groups (P < 0.05). By the end of anaesthesia and surgery, TNF-alpha and IL-6 were significantly lower in group R than in group F (P < 0.05). At the end of anaesthesia and 12 hours postoperatively, IL-10 levels in group R were higher than in group F (P < 0.05). These findings suggest that total intravenous anaesthesia using propofol and remifentanil suppresses the inflammatory response caused by surgery to a greater extent than a balanced inhalation technique using isoflurane.
Collapse
Affiliation(s)
- J J Ke
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Hubei Province, Peoples Republic of China
| | | | | | | | | | | |
Collapse
|
44
|
Kasprowicz L, Malloch G, Foster S, Pickup J, Zhan J, Fenton B. Clonal turnover of MACE-carrying peach-potato aphids (Myzus persicae (Sulzer), Homoptera: Aphididae) colonizing Scotland. Bull Entomol Res 2008; 98:115-124. [PMID: 18076780 DOI: 10.1017/s0007485307005445] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Peach-potato aphids, Myzus persicae (Sulzer), collected in Scotland in the years 1995 and 2002-2004 were characterized using four microsatellite loci and three insecticide resistance mechanisms. From 868 samples, 14 multilocus genotypes were defined (designated clones A-N). Five of these (denoted A, B, H, M and N) carried modified acetylcholinesterase (MACE) resistance, the most recent resistance mechanism to have evolved in M. persicae. The current paper shows that the continued presence of MACE aphids is due to turnover, as clones A and B were replaced in field samples by clones H, M and N in later seasons. Thus, insecticide-resistant populations in Scotland can be attributed to multiple waves of rapid clone colonisations and not to the continued presence of stable resistant clones or mutation or sexual recombination in local populations. The MACE clones carried varying levels of the other insecticide resistance mechanisms, kdr and esterase. The presence of these mechanisms could alter the clones success in the field depending on insecticide spraying (positive selection) and resistance fitness costs (negative selection).
Collapse
Affiliation(s)
- L Kasprowicz
- Scottish Crop Research Institute, Invergowrie, Dundee, UK
| | | | | | | | | | | |
Collapse
|
45
|
Werner R, Zhan J, Gesing J, Struve D, Hiort O. In-vitro Characterization of Androgen Receptor Mutations Associated with Complete Androgen Insensitivity Syndrome Reveals Distinct Functional Deficits. Sex Dev 2008; 2:73-83. [DOI: 10.1159/000129692] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2008] [Accepted: 04/10/2008] [Indexed: 11/19/2022] Open
|
46
|
Zhan J, Mundt CC, McDonald BA. Sexual reproduction facilitates the adaptation of parasites to antagonistic host environments: Evidence from empirical study in the wheat-Mycosphaerella graminicola system. Int J Parasitol 2007; 37:861-70. [PMID: 17451717 DOI: 10.1016/j.ijpara.2007.03.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2006] [Revised: 02/13/2007] [Accepted: 03/08/2007] [Indexed: 11/19/2022]
Abstract
Most eukaryotes use sexual reproduction to transmit genetic information from generation to generation despite the advantages offered by asexual reproduction. One theory to explain the origin and maintenance of sexual reproduction hypothesises that sexual recombination generates genetic variation that allows faster adaptation to fluctuating and/or stressful environments. We used a combination of ecological, molecular genetic, statistical and experimental evolution approaches to test this hypothesis in an agricultural plant-pathogen system. We inoculated wheat hosts with 10 strains of the fungal pathogen Mycosphaerella graminicola in a field experiment and estimated the contributions of sexual reproduction, asexual reproduction and immigration to the genetic composition of fungal populations sampled from moderately resistant and susceptible hosts through the course of an epidemic cycle. We found that a significant proportion of the M. graminicola population in the late phase of the epidemic originated from sexual reproduction among isolates that had been introduced into the field plots at the beginning of the epidemic. Recombinants were recovered at a higher frequency on the moderately resistant plant host Madsen than on the susceptible host Stephens. By the end of the growing season, we estimated that approximately 13% of the strains sampled from the resistant host were recombinants, compared with 9% in the samples collected from the susceptible host. We also found that pathogen strains originating from the resistant cultivar displayed higher levels of fitness, virulence and fungicide tolerance than those originating from the susceptible cultivar. Our results provide empirical support for the hypothesis that sexual reproduction facilitates the evolution of parasites to overcome host resistance.
Collapse
Affiliation(s)
- J Zhan
- Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, Scotland, UK.
| | | | | |
Collapse
|
47
|
Zhan J, Stefanato FL, McDonald BA. Selection for increased cyproconazole tolerance in Mycosphaerella graminicola through local adaptation and in response to host resistance. Mol Plant Pathol 2006; 7:259-68. [PMID: 20507445 DOI: 10.1111/j.1364-3703.2006.00336.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
SUMMARY Sterol demethylation inhibitors (DMIs) represent one of the largest groups of systemic fungicides that have been used to control agriculturally important fungal pathogens. Knowledge regarding the evolution of fungicide resistance in agricultural ecosystems is fragmentary and a better understanding of the processes driving the development of DMI resistance in populations of fungal pathogens is needed by plant pathologists and the agrochemical industry. We considered some of these processes using approaches based on molecular population and quantitative genetics. Five Mycosphaerella graminicola populations sampled from unsprayed wheat fields on four continents were assayed for eight restriction fragment length polymorphism (RFLP) markers and their level of tolerance to cyproconazole. DMI fungicides such as cyproconazole inhibit the enzyme eburicol 14-alpha-demethylase. The gene encoding this target, CYP51, was sequenced for all isolates. We found unimodal, continuous variations in cyproconazole tolerance among the M. graminicola isolates sampled from individual fields, consistent with a polygenic mode of inheritance. We also found that population differentiation for cyproconazole tolerance (Q(ST)) among the five M. graminicola populations was significantly higher than the corresponding population differentiation for neutral RFLP markers (G(ST)), suggesting that selection for cyproconazole tolerance in the Swiss population has already led to local adaptation that can be seen even in an unsprayed population. The Swiss population displayed the highest level of tolerance to cyproconazole, in addition to a lower than expected quantitative variation in fungicide tolerance and a skewed distribution, indicating that selection had increased the overall tolerance of this population. Further analysis with DNA sequencing showed that the population from Switzerland was dominated by isolates with several point mutations and a 6-bp deletion in CYP51. This deletion and one of the point mutations were previously related to increased resistance in field isolates. The fungal population from Oregon sampled from an unsprayed resistant host cultivar displayed the same gene diversity in RFLP loci but higher cyproconazole tolerance and quantitative variation in tolerance than the fungal population from the same field sampled from an unsprayed susceptible host cultivar.
Collapse
Affiliation(s)
- J Zhan
- Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, UK
| | | | | |
Collapse
|
48
|
Li Y, Li J, Segal S, Wegiel J, De Santi S, Zhan J, de Leon MJ. Hippocampal cerebrospinal fluid spaces on MR imaging: Relationship to aging and Alzheimer disease. AJNR Am J Neuroradiol 2006; 27:912-8. [PMID: 16611790 PMCID: PMC8133961] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2005] [Accepted: 08/29/2005] [Indexed: 05/08/2023]
Abstract
BACKGROUND AND PURPOSE Perihippocampal fissures (PHFs) and hippocampal sulcus residual cavities (HSCs) are common findings in the MR imaging examination of the hippocampus in aging and Alzheimer disease (AD); however, little is known about how to distinguish them or their relative clinical relevance. We hypothesized that prominence of the HSC, unlike PHF, is not significantly influenced by the hippocampal atrophy related to aging or AD. METHODS We studied and evaluated these hippocampal CSF spaces on MR imaging scans from 130 normal control (NC) subjects (20-90 years of age) and 27 AD patients. RESULTS HSC is poorly correlated with age and is not related to the magnitude of hippocampal atrophy. There is no significant difference of HSCs between AD and age-matched NCs, but in the extremely high HSCs group (top 20%), 91% of cases are NC. PHFs, on the other hand, are strongly correlated with age and are valuable in the diagnosis of AD. Location and communication with ambient cistern is the key to distinguish HSC from PHF. CONCLUSION Identifying hippocampal atrophy (enlarged PHF) may be particularly challenging in the presence of HSC. Distinguishing among the CSF spaces in hippocampus may help in the radiologic evaluation of hippocampal atrophy. Patients with extremely high HSCs (>8.4) can be excluded from AD risk with 93% specificity.
Collapse
Affiliation(s)
- Y Li
- Department of Psychiatry, New York University School of Medicine, New York, NY 10016, USA
| | | | | | | | | | | | | |
Collapse
|
49
|
Zhan J, Linde CC, Jürgens T, Merz U, Steinebrunner F, McDonald BA. Variation for neutral markers is correlated with variation for quantitative traits in the plant pathogenic fungus Mycosphaerella graminicola. Mol Ecol 2005; 14:2683-93. [PMID: 16029470 DOI: 10.1111/j.1365-294x.2005.02638.x] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.3] [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: 11/30/2022]
Abstract
We compared genetic variation and population differentiation at RFLP marker loci with seven quantitative characters including fungicide resistance, temperature sensitivity, pycnidial size, pycnidial density, colony size, percentage of leaves covered by pycnidia (PLACP) and percentage of leaves covered by lesions (PLACL) in Mycosphaerella graminicola populations sampled from four regions. Wide variation in population differentiation was found across the quantitative traits assayed. Fungicide resistance, temperature sensitivity, and PLACP displayed a significantly higher Q(ST) than G(ST), consistent with selection for local adaptation, while pycnidial size, pycnidial density and colony size displayed a lower or significantly lower Q(ST) than G(ST), consistent with constraining selection. There was not a statistical difference between Q(ST) and G(ST) in PLACL. We also found a positive and significant correlation between genetic variation in molecular marker loci and quantitative traits at the multitrait scale, suggesting that estimates of overall genetic variation for quantitative traits in M. graminicola could be derived from analysis of the molecular genetic markers.
Collapse
Affiliation(s)
- J Zhan
- Institute of Plant Sciences, Phytopathology Group, ETH Zentrum/LFW, Universitätstrasse 2, CH-8092 Zürich, Switzerland.
| | | | | | | | | | | |
Collapse
|
50
|
Abstract
The aim of this investigation was to study the remodelling of cartilage in the mandibular condyle following disc displacement (DD) of the temporomandibular joint (TMJ). Forty adult Japanese white rabbits were used in this study. The right joints of 28 of the 40 rabbits had their discs surgically displaced. Four of the 28 were killed at 4 days or 1, 2, 4, 6, 8 and 12 weeks after surgery. The messenger RNA (mRNA) expression levels of aggrecan and type II collagen in cartilages were measured using in situ hybridization techniques. Results showed that aggrecan mRNA expression reduced in the first week after DD. The expression began to recover after 4 weeks and reached a normal level after 6 weeks. Type II collagen mRNA expression reduced from 4 weeks and the expression recovered after 8 weeks. This suggests that the chondrocyte reacting to the displacement of the TMJ disc, alters its matrix gene expression patterns and it is may be the cause of the shape changes of TMJ after DD.
Collapse
Affiliation(s)
- Z Gu
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Zhejiang University, Hangzhou 310006, China
| | | | | | | | | | | | | |
Collapse
|