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Long Z, Hesley GK, Lu A, Hangiandreou NJ, Gorny KR, Tiegs-Heiden CA. MRgFUS ablation of a recurrent tenosynovial giant cell tumor in the foot using ExAblate 2100 system in combination with patient immobilization device. Radiography (Lond) 2024; 30:840-842. [PMID: 38574580 DOI: 10.1016/j.radi.2024.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/04/2024] [Accepted: 03/19/2024] [Indexed: 04/06/2024]
Abstract
INTRODUCTION Magnetic Resonance-guided Focused Ultrasound (MRgFUS) treatment for certain anatomy locations can be extremely challenging due to patient positioning and potential motion. This present study describes the treatment of a recurrent tenosynovial giant cell tumor of the plantar forefoot using the ExAblate 2100 system in combination with patient immobilization device. METHODS Prior to the treatment, several patient immobilization devices were investigated. Vacuum cushions were selected and tested for safety and compatibility with the treatment task and the MR environment. RESULTS During the treatment, one vacuum cushion immobilized the patient's right leg in knee flexion and allowed the bottom of the foot to be securely positioned on the treatment window. Another vacuum cushion supported the patient upper body extended outside the scanner bore. 19 sonications were successfully executed. The treatment was judged to be successful. No immediate complications were observed. CONCLUSIONS MRgFUS treatment of a recurrent tenosynovial giant cell tumor of the right plantar forefoot was successful with the use of patient immobilization vacuum cushions. IMPLICATIONS FOR PRACTICE The immobilization system could be utilized to aid future MRgFUS treatment of lesions in challenging anatomic locations. Various sizes of the vacuum cushions are available to potentially better accommodate other body parts and treatment configurations.
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Affiliation(s)
- Z Long
- Department of Radiology, Mayo Clinic, MN, USA.
| | - G K Hesley
- Department of Radiology, Mayo Clinic, MN, USA
| | - A Lu
- Department of Radiology, Mayo Clinic, MN, USA
| | | | - K R Gorny
- Department of Radiology, Mayo Clinic, MN, USA
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Ma X, Li H, Shi J, Zhang Y, Long Z. Importance-aware contrastive learning via semantically augmented instances for unsupervised sentence embeddings. INT J MACH LEARN CYB 2023. [DOI: 10.1007/s13042-023-01813-w] [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: 03/19/2023]
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Long Z, Liu W, Qi JL, Liu YN, Liu JM, You JL, Lin L, Wang LJ, Zhou MG, Yin P. [Mortality trend of chronic respiratory diseases in China, 1990-2019]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:14-21. [PMID: 35130647 DOI: 10.3760/cma.j.cn112338-20210601-00443] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To analyze mortality and its trend of chronic respiratory diseases (CRD) in China from 1990 to 2019. Methods: Based on the provincial results of China from the 2019 Global Burden of Disease (GBD) study, the average annual percent change (AAPC) of standardized mortality rates of different CRDs were analyzed by using Joinpoint 4.8.0.1, and the age-standardized mortality rate of CRD was calculated by using the GBD 2019 world standard population. Based on the comparative risk assessment theory of GBD, the attributable deaths due to 12 CRD risk factors were estimated, including smoking, indoor air pollution, occupational gas exposure, particulates and smog exposure, environmental particulate pollution, low temperature, passive smoking, ozone pollution, occupational exposure to silica, occupational asthma, high body mass index, high temperature and occupational exposure to asbestos. Results: From 1990 to 2019, the number of deaths and standardized mortality of chronic obstructive pulmonary disease (COPD) showed a downward trend (P<0.001). The number of COPD deaths decreased from 1 244 000 (912 000 - 1 395 000) in 1990 to 1 037 000 (889 000 - 1 266 000) in 2019. AAPC=-0.9% (95%CI: -1.5% - -0.3%), P<0.001; The standardized mortality rate decreased from 217.9/100 000 (163.3/100 000 - 242.0/100 000) in 1990 to 65.2/100 000 (55.5/100 000 - 80.1/100 000) in 2019. AAPC= -4.2% (95%CI:-5.2% - -3.2%), P<0.001. The number of deaths from asthma decreased from 40 000 (30 000 - 58 000) in 1990 to 25 000 (20 000 - 31 000) in 2019. AAPC=-2.0% (95%CI: -2.6% - -1.4%), P<0.001; The standardized mortality rate of asthma decreased from 6.4/100 000 (4.7/100 000 - 9.5/100 000) in 1990 to 1.5/100 000 (1.2/100 000 - 1.9/100 000) in 2019. AAPC=-5.1% (95%CI: -5.8% - -4.4%), P<0.001. The number of pneumoconiosis deaths decreased from 11 000 (8 000 - 14 000) in 1990 to 10 000 (8 000 - 14 000) in 2019, AAPC=-0.2%(95%CI:-0.4% - 0.1%), P=0.200; The standardized mortality rate of pneumoconiosis decreased from 1.4/100 000 (1.0/100 000 - 1.7/100 000) in 1990 to 0.5/100 000 (0.4/100 000 - 0.7/100 000) in 2019. AAPC=-3.1% (95%CI: -3.4% - -2.8%), P<0.001. The number of deaths from pulmonary interstitial diseases and pulmonary sarcoidosis increased from 3 000 (3 000 - 6 000) in 1990 to 8 000 (6 000 - 10 000) in 2019, AAPC=3.5% (95%CI: 2.7% - 4.2%), P<0.001; The corresponding standardized mortality rate changed little from 1990 to 2019, and AAPC was not statistically significant.The age-standardized mortality rates of different CRDs were higher in men than those in women. In 1990 and 2019, the mortality rates of COPD, asthma, pneumoconiosis and interstitial pulmonary disease and pulmonary sarcoidosis increased with age. In 2019, the population attributable fractions (PAFs) for smoking, environmental particulate pollution, occupational gas exposure, particulate and smog exposure, low temperature exposure and passive smoking were 71.1% (68.0% - 74.3%), 24.7% (20.1% - 30.0%), 19.3% (13.0% - 25.4%), 15.7% (13.6% - 18.3%) and 8.8% (4.5% - 13.1%) respectively in men, and the PAFs for environmental particulate pollution, smoking, low temperature exposure, occupational gas exposure, particulate and smog exposure, and passive smoking were 24.1% (19.6% - 29.3%), 21.9% (18.7% - 25.2%), 16.4% (14.0% - 19.2%), 15.6% (10.2% - 21.1%) and 14.7% (7.9% - 21.3%) respectively in women. Conclusions: During 1990-2019, the overall death level of CRD decreased significantly in China, but it is still at high level in the world. Active prevention and control measures should be taken to reduce the death level caused by CRD.
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Affiliation(s)
- Z Long
- Division of Vital Registration and Death Cause Surveillance, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - W Liu
- Division of Vital Registration and Death Cause Surveillance, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J L Qi
- Division of Vital Registration and Death Cause Surveillance, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y N Liu
- Division of Vital Registration and Death Cause Surveillance, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J M Liu
- Division of Vital Registration and Death Cause Surveillance, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - J L You
- Division of Vital Registration and Death Cause Surveillance, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - L Lin
- Division of Vital Registration and Death Cause Surveillance, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - L J Wang
- Division of Vital Registration and Death Cause Surveillance, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - M G Zhou
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - P Yin
- Division of Vital Registration and Death Cause Surveillance, National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Ning Y, Roberts NJ, Qi J, Peng Z, Long Z, Zhou S, Gu J, Hou Z, Yang E, Ren Y, Lang J, Liang Z, Zhang M, Ma J, Jiang G. Inbreeding status and implications for Amur tigers. Anim Conserv 2021. [DOI: 10.1111/acv.12761] [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: 11/29/2022]
Affiliation(s)
- Y. Ning
- College of Life Science Jilin Agricultural University Changchun China
- Feline Research Center of National Forestry and Grassland Administration College of Wildlife and Protected Area Northeast Forestry University Harbin China
| | - N. J. Roberts
- Feline Research Center of National Forestry and Grassland Administration College of Wildlife and Protected Area Northeast Forestry University Harbin China
| | - J. Qi
- Feline Research Center of National Forestry and Grassland Administration College of Wildlife and Protected Area Northeast Forestry University Harbin China
- School of Forestry Northeast Forestry University Harbin China
| | - Z. Peng
- School of Basic Medical Sciences Nanchang University Nanchang China
| | - Z. Long
- Feline Research Center of National Forestry and Grassland Administration College of Wildlife and Protected Area Northeast Forestry University Harbin China
| | - S. Zhou
- Heilongjiang Research Institute of Wildlife Harbin China
| | - J. Gu
- Feline Research Center of National Forestry and Grassland Administration College of Wildlife and Protected Area Northeast Forestry University Harbin China
| | - Z. Hou
- College of Wildlife and Protected Area Northeast Forestry University Harbin China
| | - E. Yang
- Wildlife Conservation Society Hunchun China
| | - Y. Ren
- Wildlife Conservation Society Hunchun China
| | - J. Lang
- Jilin Hunchun Amur Tiger National Nature Reserve Hunchun China
| | - Z. Liang
- Heilongjiang Laoyeling Amur Tiger National Nature Reserve Dongning China
| | - M. Zhang
- Feline Research Center of National Forestry and Grassland Administration College of Wildlife and Protected Area Northeast Forestry University Harbin China
| | - J. Ma
- Feline Research Center of National Forestry and Grassland Administration College of Wildlife and Protected Area Northeast Forestry University Harbin China
| | - G. Jiang
- Feline Research Center of National Forestry and Grassland Administration College of Wildlife and Protected Area Northeast Forestry University Harbin China
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Yang Y, Long Z, Zhong Z, Liu Q, Yang X. Construction and Evaluation of Gastric Cancer Risk Prediction Model. Indian J Pharm Sci 2021. [DOI: 10.36468/pharmaceutical-sciences.spl.340] [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: 11/22/2022] Open
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Wang R, Liang X, Long Z, Wang X, Yang L, Lu B, Gao J. An LCI-like protein APC 2 protects ginseng root from Fusarium solani infection. J Appl Microbiol 2020; 130:165-178. [PMID: 32639629 DOI: 10.1111/jam.14771] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/25/2020] [Accepted: 07/02/2020] [Indexed: 11/29/2022]
Abstract
AIMS We aimed to purify an antimicrobial protein from Bacillus amyloliquefaciens FS6 culture supernatant, verify its antimicrobial activity against Fusarium solani and evaluate its biocontrol potential for ginseng root rot. METHODS AND RESULTS The antimicrobial protein was purified from FS6 culture supernatant using ammonium sulphate precipitation, anion exchange and gel chromatography. Based on mass spectrometry results, the purified protein was identified as an antimicrobial protein of the LCI family and was designated APC2 . The APC2 recombinant protein expressed in Escherichia coli (BL21) significantly inhibited F. solani and decreased the infection and spread of F. solani in ginseng root. An overexpressing APC2 strain FS6-APC2 was constructed and shown to have enhanced antimicrobial activity compared to the wild-type strain FS6. CONCLUSIONS The APC2 protein shows strong antimicrobial activity against F. solani, reduces the incidence and severity of ginseng root rot caused by F. solani and exhibits a great biocontrol potential. SIGNIFICANCE AND IMPACT OF THE STUDY This study reports the inhibitory activity of APC2 protein (LCI family) against F. solani and its protective efficacy on ginseng root rot. These findings provide a scientific basis for future research on the biocontrol mechanism, as well as the development and application of FS6.
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Affiliation(s)
- R Wang
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, China
| | - X Liang
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, China
| | - Z Long
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, China
| | - X Wang
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, China
| | - L Yang
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, China
| | - B Lu
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, China
| | - J Gao
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, China
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Guo H, Wang T, Wu H, Long M, Coe BP, Li H, Xun G, Ou J, Chen B, Duan G, Bai T, Zhao N, Shen Y, Li Y, Wang Y, Zhang Y, Baker C, Liu Y, Pang N, Huang L, Han L, Jia X, Liu C, Ni H, Yang X, Xia L, Chen J, Shen L, Li Y, Zhao R, Zhao W, Peng J, Pan Q, Long Z, Su W, Tan J, Du X, Ke X, Yao M, Hu Z, Zou X, Zhao J, Bernier RA, Eichler EE, Xia K. Inherited and multiple de novo mutations in autism/developmental delay risk genes suggest a multifactorial model. Mol Autism 2018; 9:64. [PMID: 30564305 PMCID: PMC6293633 DOI: 10.1186/s13229-018-0247-z] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 11/23/2018] [Indexed: 11/17/2022] Open
Abstract
Background We previously performed targeted sequencing of autism risk genes in probands from the Autism Clinical and Genetic Resources in China (ACGC) (phase I). Here, we expand this analysis to a larger cohort of patients (ACGC phase II) to better understand the prevalence, inheritance, and genotype-phenotype correlations of likely gene-disrupting (LGD) mutations for autism candidate genes originally identified in cohorts of European descent. Methods We sequenced 187 autism candidate genes in an additional 784 probands and 85 genes in 599 probands using single-molecule molecular inversion probes. We tested the inheritance of potentially pathogenic mutations, performed a meta-analysis of phase I and phase II data and combined our results with existing exome sequence data to investigate the phenotypes of carrier parents and patients with multiple hits in different autism risk genes. Results We validated recurrent, LGD, de novo mutations (DNMs) in 13 genes. We identified a potential novel risk gene (ZNF292), one novel gene with recurrent LGD DNMs (RALGAPB), as well as genes associated with macrocephaly (GIGYF2 and WDFY3). We identified the transmission of private LGD mutations in genes predominantly associated with DNMs and showed that parental carriers tended to share milder autism-related phenotypes. Patients that carried DNMs in two or more candidate genes show more severe phenotypes. Conclusions We identify new risk genes and transmission of deleterious mutations in genes primarily associated with DNMs. The fact that parental carriers show milder phenotypes and patients with multiple hits are more severe supports a multifactorial model of risk.
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Affiliation(s)
- Hui Guo
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA USA
- Mental Health Institute of the Second Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Tianyun Wang
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA USA
| | - Huidan Wu
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Min Long
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Bradley P. Coe
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA USA
| | - Honghui Li
- Key Laboratory of Developmental Disorders in Children, Liuzhou Maternity and Child Healthcare Hospital, Liuzhou, Guangxi China
| | - Guanglei Xun
- Mental Health Center of Shandong Province, Jinan, Shandong China
| | - Jianjun Ou
- Mental Health Institute of the Second Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Biyuan Chen
- Children Development Behavior Center of the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong China
| | - Guiqin Duan
- Center of Children Psychology and Behavior, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan China
| | - Ting Bai
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Ningxia Zhao
- Xi’an Encephalopathy Hospital of Traditional Chinese Medicine, Xi’an, Shaanxi China
| | - Yidong Shen
- Mental Health Institute of the Second Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Yun Li
- Child Mental Health Research Center, Nanjing Brain Hospital Affiliated of Nanjing Medical University, Nanjing, Jiangsu China
| | - Yazhe Wang
- Center of Children Psychology and Behavior, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan China
| | - Yu Zhang
- Key Laboratory of Developmental Disorders in Children, Liuzhou Maternity and Child Healthcare Hospital, Liuzhou, Guangxi China
| | - Carl Baker
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA USA
| | - Yanling Liu
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Nan Pang
- Department of Pediatrics, the Xiangya Hospital, Central South University, Changsha, China
| | - Lian Huang
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Lin Han
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Xiangbin Jia
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Cenying Liu
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Hailun Ni
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Xinyi Yang
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Lu Xia
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Jingjing Chen
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Lu Shen
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Ying Li
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Rongjuan Zhao
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Wenjing Zhao
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Jing Peng
- Department of Pediatrics, the Xiangya Hospital, Central South University, Changsha, China
| | - Qian Pan
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Zhigao Long
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Wei Su
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Jieqiong Tan
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Xiaogang Du
- Xi’an Encephalopathy Hospital of Traditional Chinese Medicine, Xi’an, Shaanxi China
| | - Xiaoyan Ke
- Child Mental Health Research Center, Nanjing Brain Hospital Affiliated of Nanjing Medical University, Nanjing, Jiangsu China
| | - Meiling Yao
- Center of Children Psychology and Behavior, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan China
| | - Zhengmao Hu
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
| | - Xiaobing Zou
- Children Development Behavior Center of the Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong China
| | - Jingping Zhao
- Mental Health Institute of the Second Xiangya Hospital, Central South University, Changsha, Hunan China
| | | | - Evan E. Eichler
- Department of Genome Sciences, University of Washington School of Medicine, Seattle, WA USA
- Howard Hughes Medical Institute, University of Washington, Seattle, WA USA
| | - Kun Xia
- Center for Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan China
- Key Laboratory of Medical Information Research, Central South University, Changsha, Hunan China
- Collaborative Innovation Center for Genetics and Development, Shanghai, China
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Hua X, Chen L, Zhu Q, Hu W, Lin C, Long Z, Wen W, Sun X, Lu Z, Chen Q, Luo D, Sun R, Mo H, Tang L, Zhang W, He Z, Mai H, Lin H, Guo L. Efficacy of controlled-release oxycodone for reducing pain due to oral mucositis in nasopharyngeal carcinoma patients treated with concurrent chemoradiotherapy: A prospective clinical trial. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy438.006] [Citation(s) in RCA: 1] [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: 11/14/2022] Open
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Lin H, Hua X, Long Z, Zhang W, Lin C, Sun X, Wen W, Lu Z, Guo N, He Z, Song L, Guo L. IQGAP3 overexpression correlates with poor prognosis and radiation therapy resistance in breast cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy427.010] [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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Abstract
Hyponatremia is a potentially serious electrolyte abnormality observed in neuromyelitis optica spectrum disorders (NMOSDs), and its most common cause is syndrome of inappropriate antidiuretic hormone secretion (SIADH). Another potential cause of hyponatremia is cerebral salt-wasting syndrome (CSWS), although CSWS has not previously been reported in NMOSDs. Accurate and early differentiation between SIADH and CSWS is difficult. However, the two conditions have important implications for the selection of therapy. Here, we describe two patients with aquaporin-4 antibody (AQP4-Ab)-positive NMOSDs who developed hyponatremia as a result of CSWS and SIADH, respectively. Additionally, we review all previously reported studies of hyponatremia in patients with NMOSDs and propose several potential pathophysiological mechanisms of hyponatremia. In conclusion, NMOSDs accompanied by hyponatremia are not actually rare, but have previously been given little attention. Furthermore, SIADH should not be the only consideration, before the exclusion of rare but significant CSWS.
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Affiliation(s)
- S. Jin
- Department of Neurology; The Second Xiangya Hospital; Central South University; Changsha China
| | - Z. Long
- Department of Neurology; The Second Xiangya Hospital; Central South University; Changsha China
| | - W. Wang
- Department of Neurology; The Second Xiangya Hospital; Central South University; Changsha China
| | - B. Jiang
- Department of Neurology; The Second Xiangya Hospital; Central South University; Changsha China
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Tang LF, Qin G, Yang YC, Gan LR, Wang Y, Long Z. [Therapeutic effect of two kinds of surgical treatment for chronic dacryocystitis: external dacryocystorhinostomy and endoscopic dacryocystorhinostomy]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1029-1031. [PMID: 29798171 DOI: 10.13201/j.issn.1001-1781.2017.13.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Indexed: 11/12/2022]
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Du Y, Han B, Long Z, Chen M, Hou B, Feng F. Observation of Magnetic Resonance Imaging Monitoring in Patients with Low/INT-1 Risk Myelodysplastic Syndromes or Aplastic Anemia Complicated with Iron Overload. Leuk Res 2017. [DOI: 10.1016/s0145-2126(17)30403-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tian Q, Li Y, Kousar R, Guo H, Peng F, Zheng Y, Yang X, Long Z, Tian R, Xia K, Lin H, Pan Q. A novel NHS mutation causes Nance-Horan Syndrome in a Chinese family. BMC Med Genet 2017; 18:2. [PMID: 28061824 PMCID: PMC5219716 DOI: 10.1186/s12881-016-0360-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 12/02/2016] [Indexed: 11/21/2022]
Abstract
Background Nance-Horan Syndrome (NHS) (OMIM: 302350) is a rare X-linked developmental disorder characterized by bilateral congenital cataracts, with occasional dental anomalies, characteristic dysmorphic features, brachymetacarpia and mental retardation. Carrier females exhibit similar manifestations that are less severe than in affected males. Methods Here, we report a four-generation Chinese family with multiple affected individuals presenting Nance-Horan Syndrome. Whole-exome sequencing combined with RT-PCR and Sanger sequencing was used to search for a genetic cause underlying the disease phenotype. Results Whole-exome sequencing identified in all affected individuals of the family a novel donor splicing site mutation (NM_198270: c.1045 + 2T > A) in intron 4 of the gene NHS, which maps to chromosome Xp22.13. The identified mutation results in an RNA processing defect causing a 416-nucleotide addition to exon 4 of the mRNA transcript, likely producing a truncated NHS protein. Conclusions The donor splicing site mutation NM_198270: c.1045 + 2T > A of the NHS gene is the causative mutation in this Nance-Horan Syndrome family. This research broadens the spectrum of NHS gene mutations, contributing to our understanding of the molecular genetics of NHS. Electronic supplementary material The online version of this article (doi:10.1186/s12881-016-0360-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Qi Tian
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Yunping Li
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Rizwana Kousar
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China.,Department of Biology, Allama Iqbal Open University, Islamabad, Pakistan
| | - Hui Guo
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Fenglan Peng
- ChangSha Health Vocational Collage, Changsha, Hunan, China
| | - Yu Zheng
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Xiaohua Yang
- Shenzhen Baoan District Maternal and Child Health Hospital, Shenzhen, Guangdong, China
| | - Zhigao Long
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Runyi Tian
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Kun Xia
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Haiying Lin
- Shenzhen Baoan District Maternal and Child Health Hospital, Shenzhen, Guangdong, China.
| | - Qian Pan
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China.
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Long Z, Tradup D, Song P, Stekel S, Chen S, Hangiandreou N. TU-H-206-09: Acceptance Testing of Ultrasound Systems for Shear Wave Elastography Measurements. Med Phys 2016. [DOI: 10.1118/1.4957654] [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: 11/07/2022] Open
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15
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Li H, Yang T, Long Z, Cheng J. Effect of mitochondrial ATP-sensitive potassium channel opening on the translocation of protein kinase C epsilon in adult rat ventricular myocytes. Genet Mol Res 2014; 13:4516-22. [PMID: 25036356 DOI: 10.4238/2014.june.17.3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study aimed to investigate the effects of mitochondrial ATP-sensitive potassium (MitoKATP) channel opening on the translocation of protein kinase C epsilon (PKCε). In addition, we aimed to determine the relationship between PKCε translocation and the production of reactive oxygen species (ROS). PKCε protein expression in cultured adult rat ventricular myocytes was investigated by immunofluorescence and Western blotting. Diazoxide (DZ), a selective MitoKATP channel activator, caused a significant translocation to myofibrillar-like structures in cultured adult rat ventricular myocytes. N-2-Mercaptopropionylglycine, a free radical scavenger, could partially inhibit the translocation of PKCε induced by DZ. By contrast, chelerythrine, a selective PKC inhibitor, could completely block the translocation of PKCε induced by DZ. The opening of MitoKATP channels might activate and cause PKCε to translocate into myofibrillar-like structures. PKCε activation occurred downstream of the MitoKATP channel, possibly as a result of ROS production that occurred after the MitoKATP channels opened.
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Affiliation(s)
- H Li
- Department of Anesthesiology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - T Yang
- Department of Anesthesiology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Z Long
- Department of Anesthesiology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - J Cheng
- Department of Anesthesiology, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
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Abstract
Aims: To report the technique and outcomes of sutureless manual cataract extraction via a subconjunctival limbus oblique incision for mature cataracts. Materials and Methods: This retrospective study comprised of 112 eyes of 83 patients with mature cataract who all had manual cataract extraction via a subconjunctival limbus oblique incision. A transconjunctival tunnel is fashioned with a 3.0 mm keratome, 0.5 mm behind the limbal vascular arcades. A limbal tunnel, with a transverse extent of 9 mm in the cornea and 7.0 mm in the limbus, is created beneath the conjunctival/Tenon's tissue using an angled bevel-up crescent blade. Outcome measures included visual acuity, intraoperative complications, surgically induced astigmatism, endothelial cell loss rate and surgery time. Results: Self-sealing wound was achieved in 112 eyes (98.2%). The nucleus was delivered in whole in 108 eyes (96.4%). Intraoperative complications included hyphema in 3 eyes (2.7%), iridodialysis in 2 eyes 1.8%), posterior capsular rupture and zonular dialysis in 2 eyes (1.8%). At the 3-month follow-up, 91% patients achieved a best-corrected visual acuity of 20/20 or better, the mean of surgically induced astigmatism was -0.62 ± 0.41 Diopters and endothelial cell loss was 4.2%. Average surgical time was 3.75 min per case. Conclusion: This subconjunctival limbus oblique incision has the potential to serve as safe and effective technique for mature cataracts.
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Affiliation(s)
| | - P Lai
- Jiangxi Eye Center, Jiangxi Provincial People's Hospital, Nanchang, Jiangxi Province, China
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18
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Chen C, Lin CH, Long Z, Chen Q. Predicting transient particle transport in enclosed environments with the combined computational fluid dynamics and Markov chain method. Indoor Air 2014; 24:81-92. [PMID: 23789964 DOI: 10.1111/ina.12056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 06/16/2013] [Indexed: 05/05/2023]
Abstract
To quickly obtain information about airborne infectious disease transmission in enclosed environments is critical in reducing the infection risk to the occupants. This study developed a combined computational fluid dynamics (CFD) and Markov chain method for quickly predicting transient particle transport in enclosed environments. The method first calculated a transition probability matrix using CFD simulations. Next, the Markov chain technique was applied to calculate the transient particle concentration distributions. This investigation used three cases, particle transport in an isothermal clean room, an office with an underfloor air distribution system, and the first-class cabin of an MD-82 airliner, to validate the combined CFD and Markov chain method. The general trends of the particle concentrations vs. time predicted by the Markov chain method agreed with the CFD simulations for these cases. The proposed Markov chain method can provide faster-than-real-time information about particle transport in enclosed environments. Furthermore, for a fixed airflow field, when the source location is changed, the Markov chain method can be used to avoid recalculation of the particle transport equation and thus reduce computing costs.
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Affiliation(s)
- C Chen
- School of Mechanical Engineering, Purdue University, West Lafayette, IN, USA
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Li Z, Liu J, Li H, Peng Y, Lv W, Long Z, Liang D, Wu L. Phenotypic expansion of the interstitial 16p13.3 duplication: a case report and review of the literature. Gene 2013; 531:502-5. [PMID: 24035902 DOI: 10.1016/j.gene.2013.09.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [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: 07/23/2013] [Revised: 08/26/2013] [Accepted: 09/03/2013] [Indexed: 11/28/2022]
Abstract
Genotype-phenotype analysis of at least 25 individuals with interstitial 16p13.3 duplications defines a recognizable syndrome associated with duplication of a critical Rubinstein-Taybi region encompassing only the CREBBP gene. Nevertheless, variable or incompletely penetrant phenotype has been reported previously. We here report a case of a 5-year old boy with a recognizable phenotype of this syndrome, including intellectual disability, mild arthrogryposis, small and proximally implanted thumbs and characteristic facial features. In addition, growth delay, microcephaly and distinguishable structural brain MRI abnormalities were observed. A de novo 1.5 Mb interstitial duplication of 16p13.3 was detected by SNP-array and fluorescence in situ hybridization (FISH). Short tandem repeat polymorphism (STRP) analysis with marker D16S475 indicated that the duplication was formed before maternal meiosis II. Our findings highlight the variable clinical features and further expand the phenotypic spectrum correlated with this lately proposed syndrome.
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Affiliation(s)
- Zhuo Li
- State Key Laboratory of Medical Genetics, Central South University, 110 Xiangya Road, Changsha, Hunan 410078, China
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Li Q, Li G, Wang Y, Long Z, Liu X, Zhang Z. Lymph Node Status as Predictive Factor for Selective Adjuvant Chemoradiation in Patients With Locally Advanced Gastric Cancer With D2 Dissection. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.785] [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: 11/26/2022]
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Peng H, Zhang Y, Long Z, Zhao D, Guo Z, Xue J, Xie Z, Xiong Z, Xu X, Su W, Wang B, Xia K, Hu Z. A novel splicing mutation in COL1A1 gene caused type I osteogenesis imperfecta in a Chinese family. Gene 2012; 502:168-71. [PMID: 22565191 DOI: 10.1016/j.gene.2012.04.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 03/19/2012] [Accepted: 04/09/2012] [Indexed: 11/25/2022]
Abstract
Osteogenesis imperfect (OI) is a heritable connective tissue disorder with bone fragility as a cardinal manifestation, accompanied by short stature, dentinogenesis imperfecta, hyperlaxity of ligaments and skin, blue sclerae and hearing loss. Dominant form of OI is caused by mutations in the type I procollagen genes, COL1A1/A2. Here we identified a novel splicing mutation c.3207+1G>A (GenBank ID: JQ236861) in the COL1A1 gene that caused type I OI in a Chinese family. RNA splicing analysis proved that this mutation created a new splicing site at c.3200, and then led to frameshift. This result further enriched the mutation spectrum of type I procollagen genes.
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Affiliation(s)
- Hao Peng
- School of Biological Science and Technology, Central South University, Changsha, Hunan, China
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Liu X, Xu Y, Long Z, Zhu H, Wang Y. The prognostic significance of apoptosis-related biological markers in Chinese gastric cancer patients. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.108] [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: 11/20/2022] Open
Abstract
108 Background: The prognosis varied among the patients with the same stage, therefore there was a need for new prognostic and predictive factors. The aim of this study was to evaluate the relationship of apoptosis-related biological markers such as P21, P27, P53, Bcl-2, Bax, and c-myc, and clinicopathological features and their prognostic value. Methods: From January 1996 to December 2007, 4,426 patients had undergone gastrectomy for gastric cancer at Fudan University Shanghai Cancer Center. Among 501 patients, the expression levels of P21, P27, P53, Bcl-2, Bax, and c-myc were examined by immunohistochemistry. The prognostic value of biological markers and the correlation between biological markers and other clinicopathological factors were investigated. Results: There were 339 males and 162 females (2.09:1) with a mean age of 57. The percentages of positive expression of P21, P27, P53, Bcl-2, Bax, and c-myc were 73%, 25%, 65%, 22%, 43%, and 58%, respectively. There was a strong correlation between P21, P53, Bax, and c-myc expression (p = 0.00). There was significant association between P27, Bcl-2, and Bax expression (p < 0.05). The P21 expression correlated with male (p = 0.00), histological grade (p = 0.00), Borrmann type (p = 0.02), tumor location (p = 0.01); the P53 expression with histological grade (p = 0.01); Bcl-2 expression with pathological stage (p = 0.01); Bax expression with male (p = 0.02), histological grade (p = 0.01), Borrmann type (p = 0.01), tumor location (p = 0.00), lymph node metastasis (p = 0.03), pathological stage (p = 0.01); c-myc expression with Borrmann type (p = 0.00). Bcl-2 expression was related with good survival in univariate analysis (p = 0.01). Multivariate analysis showed that Bcl-2 expression and pathological stage were defined as independent prognostic factors for gastric cancers. There was significant differences of overall 5-year survival rates according to Bcl-2 expression or not in stage III (p = 0.00). Conclusions: The expressionof Bcl-2 was an independent prognostic factor for Chinese patients with gastric cancer; it might be a candidate for the gastric cancer staging system. No significant financial relationships to disclose.
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Affiliation(s)
- X. Liu
- Department of Abdominal Surgery, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan, Shanghai, China
| | - Y. Xu
- Department of Abdominal Surgery, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan, Shanghai, China
| | - Z. Long
- Department of Abdominal Surgery, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan, Shanghai, China
| | - H. Zhu
- Department of Abdominal Surgery, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan, Shanghai, China
| | - Y. Wang
- Department of Abdominal Surgery, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan, Shanghai, China
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Ding Y, Jiang Y, Xu F, Yin J, Ren H, Zhuo Q, Long Z, Zhang P. Preparation of nano-structured LiFePO4/graphene composites by co-precipitation method. Electrochem commun 2010. [DOI: 10.1016/j.elecom.2009.10.023] [Citation(s) in RCA: 251] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Long Z, Perrie W, Gyakum J, Laprise R, Caya D. Scenario changes in the climatology of winter midlatitude cyclone activity over eastern North America and the Northwest Atlantic. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008jd010869] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Wu L, Liang D, Niikawa N, Ma F, Sun M, Pan Q, Long Z, Zhou Z, Yoshiura KI, Wang H, Sato D, Nishimura G, Dai H, Zhang X, Xia J. A ZRS duplication causes syndactyly type IV with tibial hypoplasia. Am J Med Genet A 2009; 149A:816-8. [PMID: 19291772 DOI: 10.1002/ajmg.a.32740] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Lingqian Wu
- National Laboratory of Medical Genetics, Central South University, Changsha, Hunan, China.
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Xue J, Zhu H, Wu L, Liang D, Pan Q, Long Z, Dai H, Xia K, Xia J. [Mutation screening of the dystrophin gene in 14 Chinese Duchenne/Becker muscular dystrophy patients without gross deletions]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2008; 25:633-636. [PMID: 19065519] [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: 05/27/2023]
Abstract
OBJECTIVE To search for the dystrophin gene mutations of Duchenne muscular dystrophy (DMD) patients without gross deletions, in order to offer accurate genetic counseling and prenatal diagnosis for those families. METHODS All 79 exons of the dystrophin gene as well as its 5'-UTR and 3'-UTR of 14 Chinese DMD/Becker muscular dystrphy (BMD) patients without detectable gross deletions were screened by denaturing high performance liquid chromatography (DHPLC) and heteroduplex fragments were identified by subsequent sequencing. RESULTS Seven causative point mutations, including two novel ones, were detected in 7 patients. Fourteen known polymorphisms and 7 unknown intronic variations were also detected. Five mothers of the patients were obligate carriers. CONCLUSION DHPLC is an efficient way of identifying point mutations and the female carriers in DMD families.
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Affiliation(s)
- Jinjie Xue
- National Key Laboratory of Medical Genetics, Central South University, Changsha, Hunan 410078, P. R. China
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Wang H, Li H, Wang H, Wang H, Xia Y, Wen J, Long Z, Dai H, Liang D, Xia J, Wu L. [Rapid prenatal diagnosis of chromosome aneuploidies in 60 uncultured amniotic fluid samples by fluorescence in situ hybridization]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2008; 25:538-541. [PMID: 18841567] [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: 05/26/2023]
Abstract
OBJECTIVE To evaluate the feasibility of rapid prenatal diagnosis of chromosome aneuploidies by interphase fluorescence in situ hybridization (FISH) using uncultured amniotic fluid. METHODS Bacterial artificial chromosome (BAC) DNA probes were prepared and validated by using cultured peripheral blood. Interphase FISH for chromosomes 13, 18, 21, X and Y was performed in 60 amniotic fluid samples for the rapid prenatal diagnosis of chromosome aneuploidies, and the results were compared with the karyotypes from conventional cytogenetic analysis. RESULTS Of all 60 cases, 58 were concordant with their karyotypes, and 1 case of inv(9) and another case of t(2,12) were identified by karyotyping. Two cases of trisomy 21 and 1 case of trisomy 18 were detected by FISH and confirmed with conventional cytogenetics (sensitivity=100%). There were no false-positive or false-negative results. CONCLUSION This evaluation demonstrated that FISH employing BAC DNA probes could accurately and rapidly detect aneuploidies involving the above 5 chromosomes. However, as it does not identify structural chromosome aberrations and aneuploidies involving other chromosomes, it is not a substitute for conventional chromosome analysis, and the negative FISH result should be carefully interpreted.
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Affiliation(s)
- Hao Wang
- State Key Lab of Medical Genetics of China, Central South University, Changsha, Hunan 410078, P.R. China
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Xia J, Zheng D, Tang D, Dai H, Pan Q, Long Z, Liao X. Cloning, mapping and mutation analysis of human geneGJB5 encoding gap junction protein beta-5. Sci China C Life Sci 2008; 44:92-8. [PMID: 18763093 DOI: 10.1007/bf02882077] [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] [Subscribe] [Scholar Register] [Received: 03/10/2000] [Indexed: 10/22/2022]
Abstract
By homologous EST searching and nested PCR a new human geneGJB5 encoding gap junction protein beta-5 was identified.GJB5 was genetically mapped to human chromosome 1p33-p35 by FISH. RT-PCR revealed that it was expressed in skin, placenta and fetal skin. DNA sequencing ofGJB5 was carried out in 142 patients with sensorineural hearing impairment and probands of 36 families with genetic diseases, including erythrokeratodermia (5 families), Charcot-Marie-Tooth disease (13), ptosis (4), and retinitis pigmentosa and deafness (14). Two missense mutations (686A-->G, H229R; 25C-->T, L9F) were detected in two sensorineural hearing impairment families. A heterologous deletion of 18 bp within intron was found in 3 families with heredity hearing impairment, and in one of the 3 families, a missense mutation (R265P) was identified also. But the deletion and missense mutation seemed not segregating with hearing impairment in the family. No abnormal mRNA or mRNA expression was detected in deletion carriers by RT-PCR analysis in skin tissue. Mutation analysis in 199 unaffected individuals revealed that two of them were carriers with the same 18 bp deletion.
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Affiliation(s)
- J Xia
- Hunan Medical University, State Key Laboratory of Medical Genetics, 410078, Changsha, China
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Wu L, Long Z, Liang D, Harada N, Pan Q, Yoshiura KI, Xia K, Dai H, Niikawa N, Xia J. Pre- and postnatal overgrowth in a patient with proximal 4p deletion. Am J Med Genet A 2008; 146A:791-4. [DOI: 10.1002/ajmg.a.32221] [Citation(s) in RCA: 2] [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: 11/11/2022]
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Hu H, Wu L, Feng Y, Pan Q, Long Z, Li J, Dai H, Xia K, Liang D, Niikawa N, Xia J. Molecular analysis of hearing loss associated with enlarged vestibular aqueduct in the mainland Chinese: a unique SLC26A4 mutation spectrum. J Hum Genet 2007; 52:492-497. [PMID: 17443271 DOI: 10.1007/s10038-007-0139-0] [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: 02/02/2007] [Accepted: 03/11/2007] [Indexed: 11/25/2022]
Abstract
It has been shown that mutations in the SLC26A4 gene are involved in syndromic deafness characterized by congenital sensorineural hearing impairment and goitre (Pendred's syndrome), as well as in congenital isolated deafness (DFNB4), both of which are associated with enlarged vestibular aqueduct (EVA). The prevalence of SLC26A4 mutations in Pendred's syndrome is clearly established in many ethnic groups, but the data from Mainland Chinese patients with deafness and EVA remain poor. In this report, 15 patients from 13 unrelated Chinese families with deafness and EVA were analyzed for SLC26A4 using direct sequencing. A total of 15 pathogenic mutations were observed in 11 unrelated families, 4 of which were novel. One mutation, IVS7-2A>G, was most common, accounting for 22.3% (5/22) of all the mutant alleles, and H723R was infrequent. To date, a total of 23 mutations have been reported among the Chinese, 13 of which were unique. In conclusion, EVA could be a radiological marker for SLC26A4 analysis among Mainland Chinese hearing-loss patients, and the SLC26A4 mutation spectrum in the Chinese was different from other reported populations.
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Affiliation(s)
- Hao Hu
- National Laboratory of Medical Genetics, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan, 410078, China
| | - Lingqian Wu
- National Laboratory of Medical Genetics, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan, 410078, China
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- Solution Oriented Research of Science and Technology (SORST), Japan Science and Technology Agency (JST), Kawaguchi, Japan
| | - Yong Feng
- Department of Otorhinolaryngology, Xiangya Hospital, Central South University, Changsha, China
| | - Qian Pan
- National Laboratory of Medical Genetics, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan, 410078, China
| | - Zhigao Long
- National Laboratory of Medical Genetics, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan, 410078, China
| | - Juan Li
- National Laboratory of Medical Genetics, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan, 410078, China
| | - Heping Dai
- National Laboratory of Medical Genetics, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan, 410078, China
| | - Kun Xia
- National Laboratory of Medical Genetics, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan, 410078, China
| | - Desheng Liang
- National Laboratory of Medical Genetics, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan, 410078, China.
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
- Solution Oriented Research of Science and Technology (SORST), Japan Science and Technology Agency (JST), Kawaguchi, Japan.
| | - Norio Niikawa
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- Solution Oriented Research of Science and Technology (SORST), Japan Science and Technology Agency (JST), Kawaguchi, Japan
| | - Jiahui Xia
- National Laboratory of Medical Genetics, Xiangya Hospital, Central South University, 110 Xiangya Road, Changsha, Hunan, 410078, China
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Liu X, Liu M, Xue Z, Pan Q, Wu L, Long Z, Xia K, Liang D, Xia J. Non-viral ex vivo transduction of human hepatocyte cells to express factor VIII using a human ribosomal DNA-targeting vector. J Thromb Haemost 2007; 5:347-51. [PMID: 17155951 DOI: 10.1111/j.1538-7836.2007.02355.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND In gene therapy, one of the most important issues is the choice of the vectors. pHrneo is a human-derived vector previously constructed by our group, which can target a foreign gene into a human ribosomal DNA (hrDNA) locus. METHODS AND RESULTS In this study, we inserted an expression cassette of reconstructive hFVIII (hFVIII-BDDAK39) to pHrneo to construct a targeting vector: pHrneo-BDDAK39. Through electroporation of pHrneo-BDDAK39 into HL7702 cells (human hepatocyte), we identified the homologous recombinants using polymerase chain reaction, and tested the expression of hFVIII-BDDAK39 located at the hrDNA locus. The hFVIII-BDDAK39 was successfully targeted into the hrDNA locus of HL7702 by pHrneo-BDDAK39, and the efficiency of site-specific integration was 1.1 x 10(-5). The hFVIII-BDDAK39 at the hrDNA locus of HL7702 was found to be able to express efficiently (4.3 +/- 0.9 ng 10(-6) cells 24 h(-1)). CONCLUSION It has been indicated that the targeting vector pHrneo-BDDAK39 can be used in gene therapy for hemophilia A.
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Affiliation(s)
- X Liu
- National Laboratory of Medical Genetics of China, Xiangya Hospital, Central South University, Changsha, China
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Liang D, Wu L, Pan Q, Harada N, Long Z, Xia K, Yoshiura KI, Dai H, Niikawa N, Cai F, Xia J. A father and son with mental retardation, a characteristic face, inv(12), and insertion trisomy 12p12.3-p11.2. Am J Med Genet A 2006; 140:238-44. [PMID: 16411213 DOI: 10.1002/ajmg.a.31077] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 11/11/2022]
Abstract
A male patient with mental retardation (MR) and mild facial features was shown by high-resolution G-banding to have pericentric inversion of chromosome 12 with an unknown segment inserted into the long arm of the inverted chromosome [46,XY,inv(12)(pter-->p11.2::q14.1-->p11.2::?::q14.1-->qter)]. Both the inverted chromosome 12 and clinical manifestations were transmitted to his son. Karyotypes of the propositus' parents were normal. Studies with fluorescence in situ hybridization (FISH) in both the propositus and his son revealed that the extra segment was derived from 12p. Further FISH mapping and the genome-wide copy number detection by GeneChip Mapping 100K Array showed that an 11-Mb segment of 12p between two BAC clones, RP11-22H10 and RP11-977P2, was inserted at one of the reunion points in the long arm of the inv(12) chromosome. Analysis of parent-child transmissions of duplicated alleles using microsatellite markers defined the maternal origin of the chromosomal anomaly in the propositus and suggested a mechanism of its formation through a sister-chromatid rearrangement (SCR), that is, mismatched pairing and unequal crossover between sister chromatids as well as three break rearrangements including a U type rearrangement. Karyotypes of the propositus and his son were thus inv(12)(pter-->p11.22::q14.1-->p12.3::q14.1-->qter). This is the first report of "pure" proximal 12p-trisomy including p12.3-p11.22 region.
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Affiliation(s)
- Desheng Liang
- National Laboratory of Medical Genetics of China, Xiangya Hospital, Central South University, Changsha, China
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Jiang H, Tang B, Xia K, Hu Z, Shen L, Tang J, Zhao G, Zhang Y, Cai F, Pan Q, Long Z, Wang G, Dai H. Mutation analysis of the ATM gene in two Chinese patients with ataxia telangiectasia. J Neurol Sci 2006; 241:1-6. [PMID: 16380133 DOI: 10.1016/j.jns.2005.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [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: 04/20/2005] [Revised: 08/26/2005] [Accepted: 08/29/2005] [Indexed: 11/30/2022]
Abstract
Ataxia telangiectasia (A-T) is an autosomal recessive disorder characterized by cerebellar ataxia, telangiectasia, immunodeficiency, elevated alpha-fetoprotein level, chromosomal instability, predisposition to cancer, and radiation sensitivity. Although a lot of mutations in the ATM gene have been described, there is still no report about ATM mutations in Chinese population. Using a molecular approach, we screened for ATM mutations in two patients from two unrelated Chinese families. 100 normal controls were analyzed to exclude possibility of polymorphism. Two novel mutations in the ATM gene were identified. The first one is a novel, homozygous, 1346G>C (Gly449Ala) missense mutation. The second one is a compound heterozygous mutation, which consists of a novel, 610G>T (Gly204Stop) nonsense mutation, combined with a previously reported, 6679C>T (Arg2227Cys) missense mutation. The transversions 1346G>C (Gly449Ala) and 610G>T (Gly204Stop) are not localized either in the conserved PI-3 kinase domain or in the other domains of the ATM protein. The phenotypic features were characterized by progressive cerebellar ataxia, ocular telangiectasia, elevated alpha-fetoprotein level, immunodeficiency (agammaglo-bulinemia and T-cell defect), and rearrangements of chromosomes 7 and 14; brain MRI showed cerebellar atrophy, brain SPECT showed cerebellar regional cerebral blood flow (rCBF) hypoperfusion. To our knowledge, this is the first report of ATM mutations in Mainland China, in which the transversions 1346G>C (Gly449Ala) and 610G>T (Gly204Stop) are two novel, disease-causing mutations.
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Affiliation(s)
- Hong Jiang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China
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Tang A, Zhang J, Tang Y, Feng Y, Wu L, Pan Q, Long Z, Dai H, Zhao S, Liu T, Chen Z, Xia K, Xia J. Combined radiation and suicide gene therapy for Nasopharyngeal Carcinoma: in vitro and in vivo models. Acta Biochim Pol 2005:20051068. [PMID: 16273130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Nasopharyngeal carcinoma (NPC) cells are highly radiosensitive. Historically, the main modality for NPC has been radiotherapy. Now, to explore a novel and more effective approach to NPC therapy, a combined strategy of suicide gene and radiation was developed. The yeast CDglyTK (yCDglyTK) gene controlled by a synthetic CMV-enhanced Egr-1 promoter (CE) was constructed whose expression in NPC CNE-2 cells was detected by Western Blot. The cytotoxicity of the combined radio-gene therapy was assayed by MTT. The conversion rate of 5-FC to 5-FU in vitro and the bio-distribution of 5-FU in vivo were determined by HPLC. An animal study in which yCDglyTK-expressing CNE-2 tumors were treated with 5-FC and radiation was also conducted. The results reveal that yCDglyTK is expressed in CNE-2 cells, the CEyCDglyTK/5-FC system has a potent anti-tumor action in NPC, and the radio-sensitization of Egr-1 promoter plays a key role in the killing of CNE-2 cells and in the conversion of 5-FC to 5-FU. Moreover, the treated tumors regressed significantly, and a significant difference of tumor volumes was observed between the CEyCDglyTK+5-FC+radiation group and the other four groups (P<0.05). The results also showed that suicide gene therapy and radiation have a synergic anti-tumor effect on NPC, and the combined strategy of radio-gene therapy is of great potential as a substitute for the traditional method, radiation alone, in NPC therapies.
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Affiliation(s)
- Aifa Tang
- Reproductive Medical Center, Medical Center for Peking University and Hongkong University of Science and Technology in Shenzhen, Shenzhen Hospital, Peking University, Shenzhen, China
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Zhu S, Zhou K, Huang B, Huang S, Liu F, Li Y, Xue Z, Long Z. [Hydroxyapatite nanoparticles: a novel material of gene carrier]. Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 2005; 22:980-4. [PMID: 16294735] [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: 05/05/2023]
Abstract
Hydroxyapatite nanoparticles were prepared in low Ca/P ratio by a kind of electrodeposition-hydrothermal process. The suspension of nanoparticles was cultured with SGC-7901 cells; metabolically active cells were evaluated by MTT analysis. Cells grew well and the nanoparticles in the concentration range of 10-100 microg/ml had no adverse effect on the cell viability. The results show that the nanoparticles have excellent biocompatibility with cells. Agrose gel electrophoresis analysis demonstrated that the nanoparticles had the potential to adsorb EGFP-N1 at the pH ranging between 2 to 7. Nanoparticle-DNA complex could transfer EGFP-N1 into the SGC-7901 cells, and the confocal microscopy analysis revealed that the cells with green fluorescence showed the efficiency of nanoparticle uptake to be about 80% of the efficiency of the Lipofectmine TM 2 000 uptake. In vivo, nanoparticles and DNA-nanoparticle complex were injected into mice respectively via tail-vein, and the mice grew well in two weeks. The liver, kidney, and brain of the mice were sampled and detected with electron microscopy, and all of these exhibited biodistribution of nanoparticles. This study demonstrates that Hydroxyapatite nanoparticles could be used as gene carriers.
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Affiliation(s)
- Shaihong Zhu
- General Surgical Department, The Third Xiangya Hospital, Central South University, Changsha 410013, China
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36
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Liu X, Liu M, Hua S, Lu W, Xue Z, Liang D, Cai F, Pan Q, Long Z, Wu L, Dai H, Xia K, Xia J. Expression of reconstructive hFVIII in the hrDNA by using hrDNA targeting vector. ACTA ACUST UNITED AC 2005. [DOI: 10.1007/bf03182670] [Citation(s) in RCA: 2] [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: 12/01/2022]
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Zhang Y, Tang B, Guo J, Long Z, Xia K, Pan Q, Hu Z, Wu D, Tang J, Chen T, Yan X. [Studies on PANK2 gene mutations in Chinese patients with Hallervorden-Spatz syndrome]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2005; 22:189-91. [PMID: 15793782] [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: 05/02/2023]
Abstract
OBJECTIVE To study pantothenate kinase 2 (PANK2) gene mutations in Chinese patients with Hallervorden-Spatz syndrome (HSS). METHODS PANK2 gene mutations were detected by PCR, DNA sequence analyses, restriction enzyme digestion and PCR-single strand conformation polymorphism in 5 patients, 3 unaffected family members and 51 unrelated healthy persons. RESULTS Novel compound heterozygous PANK2 gene mutations, A803G and T1172A, in exons 3 and 5, respectively, were found in one patient. At the same time, 3 types of single nucleotide polymorphisms, -38 t>a in 5'-UTR, IVS1+42 c>a and G77C in exon 1, were confirmed; among them, -38 t>a, IVS1+42 c>a, were first reported. CONCLUSION PANK2 gene mutations can cause HSS in Chinese patients.
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Affiliation(s)
- Yuhu Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, 410008 P. R. China.
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38
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Xia K, Liang D, Tang A, Feng Y, Zhang J, Pan Q, Long Z, Dai H, Cai F, Wu L, Zhao S, Chen Z, Xia J. A novel fusion suicide gene yeast CDglyTK plays a role in radio-gene therapy of nasopharyngeal carcinoma. Cancer Gene Ther 2005; 11:790-6. [PMID: 15499380 DOI: 10.1038/sj.cgt.7700728] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
To investigate a novel suicide gene for nasopharyngeal carcinoma (NPC) therapy, the yCDglyTK gene was constructed by fusing yeast cytosine deaminase (CD) and herpes simplex type 1 thymidine kinase. The expression of the yCDglyTK gene was detected by RT-PCR and Western blotting, and its bioactivity was demonstrated by an MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide) assay. An animal study was carried out in which BALB/C nude mice bearing yCDglyTK gene-modified tumors were treated with prodrugs and radiation. Our results revealed that the yCDglyTK gene could be expressed in CNE-2 cells in vitro. In MTT analysis, at the transfection rate of 10%, 66% cells were killed. The synergistic effect of CD and TK showed 91% of yCDglyTK-transfected cells were killed with the treatment of 5-fluorocytosine (5-FC) alone, 60% killed with ganciclovir (GCV) alone, and 75% killed with 5-FC and GCV together. In vivo, the tumor volume in all of the four prodrugs and/or radiation-treated groups were significantly different from that in the PBS-controlled group (P<.01); also yCDglyTK+prodrug+radiation group was different from the other three groups (P<.05). Our findings suggested there was a synergistic antitumor effect when combining suicide gene therapy and radiation, and yCDglyTK has potent antitumor efficacy and may be a candidate suicide gene for cancer therapy.
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Affiliation(s)
- Kun Xia
- National Lab. of Medical Genetics of China, Central South University, Changsha, Hunan, People's Republic of China
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Xia K, Wu L, Liu X, Xi X, Liang D, Zheng D, Cai F, Pan Q, Long Z, Dai H, Hu Z, Tang B, Zhang Z, Xia J. Mutation in PITX2 is associated with ring dermoid of the cornea. J Med Genet 2004; 41:e129. [PMID: 15591271 PMCID: PMC1735645 DOI: 10.1136/jmg.2004.022434] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- K Xia
- National Laboratory of Medical Genetics of China, Central South University, Changsha, Hunan, China.
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Tang B, Li H, Xia K, Jiang H, Pan Q, Shen L, Long Z, Zhao G, Cai F. A novel mutation in KCNQ2 gene causes benign familial neonatal convulsions in a Chinese family. J Neurol Sci 2004; 221:31-4. [PMID: 15178210 DOI: 10.1016/j.jns.2004.03.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [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: 12/01/2003] [Revised: 03/04/2004] [Accepted: 03/05/2004] [Indexed: 11/30/2022]
Abstract
Benign familial neonatal convulsions (BFNC) are a rare autosomal dominant inherited epilepsy syndrome. Two voltage-gated potassium channel genes, KCNQ2 on chromosome 20q13.3 and KCNQ3 on chromosome 8q24, have been identified as the genes responsible for benign familial neonatal convulsions. By linkage analysis and mutation analysis of KCNQ2 gene, we found a novel frameshift mutation of KCNQ2 gene, 1931delG, in a large Chinese family with benign familial neonatal convulsions. This mutation is located in the C-terminus of KCNQ2, in codon 644 predicting the replacement of the last 201 amino acids with a stretch of 257 amino acids showing a completely different sequence. An unusual clinical feature of this family is that the seizures of every patient did not remit until 12 to 18 months. This is the first report of KCNQ2 gene mutation in China.
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Affiliation(s)
- Beisha Tang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China.
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41
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Xia J, Xia K, Feng Y, Tang A, Tang Y, Wu L, Liang D, Cai F, Pan Q, Long Z, Dai H, Zhang Y, Zhao S, Chen Z. The combination of suicide gene therapy and radiation enhances the killing of nasopharyngeal carcinoma xenographs. J Radiat Res 2004; 45:281-289. [PMID: 15304972 DOI: 10.1269/jrr.45.281] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nasopharyngeal carcinoma (NPC) is very common in Southern China and Southeast Asian countries. To explore a novel and more effective approach to NPC therapy, a combined strategy of suicide genes and radiation was designed in this study. Five suicide gene expression cassettes, yeast CD, yeast CD/UPRT, and yeast CDglyTK gene controlled by CMV, and Egr-1 and a synthetic CMV-enhanced Egr-1 promoter (CE) were constructed in an expression vector p11MS. The expression of suicide genes in NPC CNE-2 cells were detected by RT-PCR and Western blot. The cytotoxicity of suicide gene therapy and radiation were analyzed by MTT assay. An animal study in which yeast CD/UPRT-expressing CNE-2 tumors in nude mice were treated with 5-FC and radiation was also developed. Our results revealed that p11MSCEyCD/UPRT and p11MSCEyCDglyTK are superior over three other constructs in the killing of NPC cells in vitro. We combined suicide gene-expressing tumors, 5-FC treatment, and radiation in vivo and found that the tumors greatly regressed, some disappeared completely in 3 nude mice in the yCD/UPRT group, and a significant difference of tumor volumes was observed between this group and the other four groups (p < 0.05). Our results indicated that suicide gene therapy and radiation have a synergic effect on NPC therapy, and the combined strategy of radiogene therapy is of great potential as a substitute for the traditional method, radiation alone, in NPC therapies.
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Affiliation(s)
- Jiahui Xia
- National Laboratory of Medical Genetics of China, Central South University, Changsha, China
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42
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Tang B, Zhao G, Xia K, Pan Q, Luo W, Shen L, Long Z, Dai H, Zi X, Jiang H. Three novel mutations of the spastin gene in Chinese patients with hereditary spastic paraplegia. ACTA ACUST UNITED AC 2004; 61:49-55. [PMID: 14732620 DOI: 10.1001/archneur.61.1.49] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND Hereditary spastic paraplegia is a group of genetically heterogeneous neurodegenerative disorders characterized by progressive spasticity of the lower limbs. The most common form of hereditary spastic paraplegia is caused by mutations in the spastin gene (SPG4), which encodes spastin, an adenosine triphosphatase associated with various cellular activities protein. OBJECTIVE To investigate the Chinese patients with hereditary spastic paraplegia for mutations in SPG4. METHODS DNA samples from 31 unrelated patients were analyzed for mutations in SPG4 by single-strand conformation polymorphism analysis and direct sequencing. All DNA samples were screened for mutations by the polymerase chain reaction, followed by electrophoresis and silver staining. Each new variant identified was analyzed in 50 control subjects to determine whether it is a polymorphism or a mutation. RESULTS Three novel mutations were detected in 4 affected individuals, including 2 missense mutations (T1258A and A1293G) and 1 deletion mutation (1668-1670delCTA). CONCLUSIONS To our knowledge, this is the first report of SPG4 mutations in the People's Republic of China. The percentage of involved Chinese families with autosomal dominant hereditary spastic paraplegia with an SPG4 mutation is 18% (4/22), lower than the estimated 40% linked to this locus.
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Affiliation(s)
- Beisha Tang
- National Laboratory of Medical Genetics of China, and the Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, People's Republic of China.
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Xia J, Deng H, Feng Y, Zhang H, Pan Q, Dai H, Long Z, Tang B, Deng H, Chen Y, Zhang R, Zheng D, He Y, Xia K. A novel locus for autosomal dominant nonsyndromic hearing loss identified at 5q31.1-32 in a Chinese pedigree. J Hum Genet 2003; 47:635-40. [PMID: 12522684 DOI: 10.1007/s100380200098] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [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: 10/26/2022]
Abstract
Hearing impairment is an extremely heterogeneous disorder. A total of 35 loci and 17 related genes for autosomal dominant nonsyndromic hearing loss have been identified. In a Chinese pedigree characterized by autosomal dominant inheritance with bilateral, postlingual, progressive, and sensorineural nonsyndromic hearing impairment, the putative disease gene locus was localized to chromosome 5q31.1-32 by a genome-wide scan. Fine mapping indicated that the disease gene was located within an 8.8-cM region between markers D5S2056 and D5S638, with a maximum two-point logarithm of differences (LOD) score of 6.89 (theta = 0) at D5S2017. By the candidate gene approach, mutation screening of the DIAPH1 and POU4F3 genes at 5q31 was performed. No mutation was found, suggesting that this is a novel deafness locus, which has been named DFNA42.
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Affiliation(s)
- Jiahui Xia
- The State Key Laboratory of Medical Genetics, Central South University, 88 Xiangya Road, Changsha, Hunan 410078, P.R. China
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Chen Y, Xue Z, Zheng D, Xia K, Zhao Y, Liu T, Long Z, Xia J. Sodium chloride modified silica nanoparticles as a non-viral vector with a high efficiency of DNA transfer into cells. Curr Gene Ther 2003; 3:273-9. [PMID: 12762484 DOI: 10.2174/1566523034578339] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [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
Development of reliable vectors is a major challenge in gene therapy. Previous gene transfer methods using non-viral vectors, such as liposomes or nanoparticles, have resulted in relatively low levels (35 to approximately 50%) of gene expression. We have developed a silicon nanoparticle (SNAP) system, a novel non-viral vector, for DNA transfer into cells. SNAP was synthesized chemically and modified with sodium chloride or sodium iodide. Electronmicroscopy of SNAP and fluorescence microscopy of fluorescence-labeled SNAP revealed that they were generated uniformly, had diameters of 10-100 nm, and showed a better efficiency (about 70%) of DNA transfection into cells as well as protection of DNA against degradation. The microscopy also demonstrated the adhesion of SNAP with HT1080 cell surface and entry of SNAP into the cells without cytotoxicity. Intravenous and/or intra-abdominal administration of the SNAP to mice revealed the accumulation of SNAP in the cells of the brain, liver, spleen, lung, kidney, intestine, prostate and the testis without any pathological cell changes or mortality, suggesting that they passed through the blood-brain, blood-prostate, and blood-testis barriers. These findings indicate that the SNAP generated has good biological characteristics as a potential promising vector for gene transfer, gene therapy and drug delivery.
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Affiliation(s)
- Yuxiang Chen
- National Laboratory of Medical Genetics, Central South University, Changsha, China.
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45
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Lin X, Tang Y, Long Z. [Effects of vitamin A and iron supplementation on the improvement of iron status and immunological function in preschool children]. Zhonghua Yu Fang Yi Xue Za Zhi 2001; 35:374-7. [PMID: 11840762] [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: 02/23/2023]
Abstract
OBJECTIVE In order to understand the changes in immunological function in rural preschool children with lower levels of vitamin A and iron, and the effect of vitamin A and iron supplementation on the improvement of iron status and immunological function. METHODS Serum vitamin A concentration and hemoglobin (Hb), serum iron (SI), transferrin saturation (TS), serum ferritin (SF) were determined in 270 rural preschool children aged 3-7 years in Beijing, and the subjects were divided into four groups based on their determinations: control, lower serum vitamin A, lower iron, and both lower iron and serum vitamin A. Forty subjects were selected from each group, and serum IgA, IgG, IgM and interleukin-2 (IL-2) were determined for them. Forty-one subjects who had lower iron and lower serum vitamin A (< 1.12 mumol/L) were divided into two groups: one of them supplemented with 30 mg iron element (ferrous sulfate 0.15 g) once a day for 8 weeks, and the other group supplemented with iron and 12,500 IU vitamin A twice a week for 8 weeks. After supplementation of vitamin A and iron, their serum vitamin A, hematological iron index and serum immunological index were determined again for the two groups. RESULTS Serum IgM were (1,260 +/- 310) mg/L in both lower iron and serum vitamin A groups, significantly higher than that in normal group (1,070 +/- 170) mg/L (P < 0.05). But there were no significant differences in serum levels of IgG, IgA and IL-2. After supplementation of iron and vitamin A, their serum TS increased to (26.5 +/- 8.6)%, significantly higher than that before supplementation and that supplemented with iron only (22.3 +/- 3.8)%. And, their serum IL-2 were (278.9 +/- 117.7) ng/L after supplementation, significantly higher than that before supplementation (161.6 +/- 90.3) ng/L and that in those supplemented with iron only (189.5 +/- 89.3) ng/L. There was no significant difference in other biochemical indices of iron and immunological indices. CONCLUSIONS Supplementation with vitamin A and iron was helpful to improve body iron nutritional status and immunological function obviously in preschool children with iron-deficiency and sub-clinical deficiency of vitamin A.
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Affiliation(s)
- X Lin
- Faculty of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100083, China
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46
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Long Z, Nimura N, Adachi M, Sekine M, Hanai T, Kubo H, Homma H. Determination of D- and L-aspartate in cell culturing medium, within cells of MPT1 cell line and in rat blood by a column-switching high-performance liquid chromatogrpahic method. J Chromatogr B Biomed Sci Appl 2001; 761:99-106. [PMID: 11585137 DOI: 10.1016/s0378-4347(01)00311-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
HPLC fluorometric methods have been used to analyze trace amounts of D-amino acids in biological samples. In this study, we established an expedient column-switching fluorometric HPLC system that would improve the analysis of D-amino acids, in particular D-aspartate (Asp). Our system consists of the fluorogenic derivatization of amino acids with NBD-F and two chromatographic steps, one that separates individual amino acids in reverse phase mode and another that separates the chiral forms of each amino acid in normal-phase mode. The two separation steps are linked through a trapping column by an automated column-switching system. In addition, sample preparation is simplified and improved, where trichloroacetic acid is used for deproteinization, and borate buffer, pH 9.5 is employed for the fluorescent derivatization. The detection limit for D-Asp in culturing medium is 5 nM. The resulting peak heights correlated well with concentrations that ranged from 12.5 to 250 nM for both D- and L-Asp. The present method was applied to determine D- and L-Asp levels in cell culturing medium, and within cells of MPT1 cell line. The detected cellular levels of D- and L-Asp agree with those detected by our previous method. In addition, this method was used to measure D- and L-Asp levels in rat blood samples, and the results are consistent with the reported values.
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Affiliation(s)
- Z Long
- School of Pharmaceutical Sciences, Kitasato University, Tokyo, Japan
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47
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Lin X, Long Z, Shen X. [Changes of serum transferrin receptor in children with iron deficiency and its response to iron supplementation]. Zhonghua Yu Fang Yi Xue Za Zhi 2001; 35:325-8. [PMID: 11769633] [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: 02/23/2023]
Abstract
OBJECTIVES To study the level of serum transferrin receptor (sTfR) in children with different stages of iron deficiency, as well as in the normal children, to observe its response to iron supplementation, and to explore the role of sTfR in surveillance of iron status and assessment of iron supplementation in population. METHODS By determining iron status index, 1,006 children aged 6-14 years in Fangshan District, Beijing were divided into four groups, control group, iron depletion (ID) group, iron deficiency erythropoiesis (IDE) group and iron deficiency anemia (IDA) group, and 239 of them were measured for sTfR with Quintikine enzyme immunoassay (R&D system, Minneapolis, MN) and sTfR/logserum ferratin (SF) was estimated. Iron supplementation (NaFeEDTA capsules, containing 60 mg iron element per capsule) was administered for the children with ID and IDE per capsule once weekly and for the children with IDA per capsule thrice weekly for nine weeks. Iron status index and sTfR were measured before and after iron supplementation. RESULTS The levels of sTfR and sTfR/log SF in children with ID, IDE and IDA were (20.03 +/- 2.33) nmol/L, (24.52 +/- 1.07) nmol/L, (33.28 +/- 6.09) nmol/L and (18.15 +/- 5.31), (20.98 +/- 8.88), (29.08 +/- 8.57), respectively, significantly higher than those in the control group [sTfR(18.74 +/- 3.06) nmol/L and sTfR/log SF(9.89 +/- 1.74)]. Statistical analysis showed that sTfR correlated to free erythrocyte protoporphyrin and hemoglobin. sTfR levels in normal children was (12.5-23.5) nmol/L. After iron supplementation, sTfR levels in children with ID was (16.37 +/- 3.10) nmol/L, significantly decreased than those before iron supplementation, but no change in sTfR was observed in children with IDE and IDA. sTfR/log SF were decreased significantly in all children with ID group(11.42 +/- 3.12), IDE (16.54 +/- 4.70) and IDA (23.59 +/- 9.93). CONCLUSION sTfR is a specific indicator for identifying IDE and IDA, and sTfR/log SF is a sensitive index for assessing the effects of iron supplementation.
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Affiliation(s)
- X Lin
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing 100083, China
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Lin X, Shen X, Long Z, Yang Q. [Effects of cactus, alove veral, momorcica charantia on reducing the blood glucose of diabetic mice]. Wei Sheng Yan Jiu 2001; 30:203-5. [PMID: 12561513] [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: 02/28/2023]
Abstract
The effects of cactus, alove veral and momorcica charantia on reducing the blood glucose level of mice were observed. The diabetic model with no symptom in mice was established by injection of streptozotocin(STZ) 80 mg/kg BW into abdominal cavity for 11 days. The diabetic mice were randomly divided into 8 groups: STZ diabetic model, diet A, diet B, cactus, alove veral, momordica charantia and glyburide groups. Cactus (60 g/kg BW), alove veral (60 g/kg BW), and momordica charantia (30 g/kg BW) were administrated orally each day to the diabetic mice for another 21 days. Serum glucose of mice fasting for 12 hours and 2 hours after meal was determined with the method of glucose-oxidase at the 21th day of the experiment. The results showed that serum glucose levels of diabetic mice were significantly higher than the normal control group (P < 0.01). After giving diet A, cactus, alove veral and momorcica charantia juice for 21 days, the serum glucose concentration of these diabetic mice were significantly lower than STZ diabetic model group (P < 0.01) but still higher than the normal control group.
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Affiliation(s)
- X Lin
- Department of Nutrition & Food Hygiene, School of Public Health, Peking University, Beijing 100083, China
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Long Z, Lee JA, Okamoto T, Sekine M, Nimura N, Imai K, Yohda M, Maruyama T, Sumi M, Kamo N, Yamagishi A, Oshima T, Homma H. Occurrence of D-Amino Acids and a pyridoxal 5'-phosphate-dependent aspartate racemase in the acidothermophilic archaeon, Thermoplasma acidophilum. Biochem Biophys Res Commun 2001; 281:317-21. [PMID: 11181048 DOI: 10.1006/bbrc.2001.4353] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Free D-amino acid content in some archaea was investigated and D-forms of several amino acids were found in them. In the acidothermophilic archaeon, Thermoplasma acidophilum, the proportion of D-aspartate (D-Asp) to total Asp was as high as 39.7%. Crude extracts of Thermoplasma acidophilum had Asp-specific racemase activity that was pyridoxal 5'-phosphate (PLP)-dependent. The relative insensitivity to a SH-modifying reagent distinguished this activity from those of the PLP-independent Asp racemases found in other hyperthermophilic archaea (Matsumoto, M., et al., J. Bacteriol. 181, 6560-6563 1999). Thus, high levels of d-Asp should be produced by a new type(s) of Asp-specific racemase in Thermoplasma acidophilum, although the function of d-Asp in this archaeon remains unknown.
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Affiliation(s)
- Z Long
- School of Pharmaceutical Sciences, Kitasato University, Minato-ku, Tokyo 108-8641, Japan
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Lee JA, Long Z, Nimura N, Iwatsubo T, Imai K, Homma H. Localization, Transport, and Uptake of -Aspartate in the Rat Adrenal and Pituitary Glands. Arch Biochem Biophys 2001; 385:242-9. [PMID: 11368004 DOI: 10.1006/abbi.2000.2163] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [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
Large amounts of D-aspartate (D-Asp) are present in the rat adrenal and pituitary glands. D-Asp is thought to be synthesized in the mammalian body and also accumulates in various tissues following intraperitoneal or intravenous administration. This report examines the origins of D-Asp in the adrenal and pituitary glands. We administered D-Asp to male rats intraperitoneally and immunolocalized this exogenous D-Asp in adrenal and pituitary tissue, using an anti-D-Asp antiserum which was previously developed in our laboratory. D-Asp levels in the rat adrenal gland have been shown to undergo a transient increase at 3 weeks of age and to decrease rapidly thereafter. We found that in the adrenal gland, exogenous D-Asp administered intraperitoneally was incorporated into the same region of the adrenal cortex in which endogenous D-Asp was present. By Northern and Western blot analysis and immunohistochemistry of glutamate (Glu) transporter, we also found that expression of the Glu transporter (GLAST), which has an affinity for D-Asp, transiently increased at 3 weeks of age and that localization patterns of the Glu transporter within the tissue were almost coincident with those of endogenous D-Asp. These observations suggest that D-Asp in the adrenal cortex of 3-week-old male rats is primarily acquired by uptake from the vascular system. We have previously shown that D-Asp is specifically localized in prolactin (PRL)-containing cells in the anterior lobe of the adult rat pituitary gland. Here we report that in the pituitary gland, exogenous D-Asp accumulated in endothelial cells, but not in PRL-containing cells. Northern and Western blot analysis and immunohistochemistry of Glu transporter revealed that developmental changes in the Glu transporter (GLAST) expression did not correlate with tissue levels of D-Asp and that the Glu transporter was not expressed in PRL-containing cells. These observations suggest that, in contrast to the adrenal gland, most of the D-Asp in the pituitary gland of adult male rats originates inside the gland itself.
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Affiliation(s)
- J A Lee
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan
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