1
|
Wan R, Song H, Qu G, Ren L, Zhou X, Tian Q, Wang Y, Liu L. Cardiogenic shock in a 28-year-old woman associated with sibutramine use. Int J Legal Med 2024; 138:833-838. [PMID: 38197924 DOI: 10.1007/s00414-023-03147-2] [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: 07/11/2023] [Accepted: 12/06/2023] [Indexed: 01/11/2024]
Abstract
A 28-year-old woman collapsed in her home, and her companion rushed to call emergency services. Upon arrival, a physician performed CPR and endotracheal intubation, successfully restoring her voluntary heart rhythm. However, while en route to the hospital, ventricular fibrillation recurred. Despite the restoration of her voluntary rhythm through electrical defibrillation, she remained in a comatose state, which eventually led to multiple organ failures. Family members revealed that she had a 2-month history of taking diet pills. Histological examination revealed cardiomyocyte necrosis, contraction band necrosis, interstitial hemorrhage, collagen deposition, interstitial fiber proliferation, and myofiber remodeling. Analysis of blood and urine using GC-MS and LC-MS detected sibutramine and its primary metabolites, M1 and M2, which were consistent with the composition of the medication she was taking. The deceased was in good health with no underlying heart disease. The above information confirmed that the cause of her death was sibutramine.
Collapse
Affiliation(s)
- Ronghui Wan
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan, 430030, People's Republic of China
| | - Huaxiong Song
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan, 430030, People's Republic of China
| | - Guoqiang Qu
- Hubei Chongxin Judicial Expertise Center, F1-2, Zone B, Huazhong International Industrial Park, Yangluo Development Zone, Xinzhou District, Wuhan, 430415, Hubei, China
| | - Liang Ren
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan, 430030, People's Republic of China
| | - Xiaowei Zhou
- Hubei Chongxin Judicial Expertise Center, F1-2, Zone B, Huazhong International Industrial Park, Yangluo Development Zone, Xinzhou District, Wuhan, 430415, Hubei, China
| | - Qishuo Tian
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan, 430030, People's Republic of China
| | - Yunyun Wang
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan, 430030, People's Republic of China.
| | - Liang Liu
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan, 430030, People's Republic of China.
| |
Collapse
|
2
|
Zhang J, Luo X, Zhou R, Dai Z, Guo C, Qu G, Li J, Zhang Z. The axial and sagittal CT values of the 7th thoracic vertebrae in screening for osteoporosis and osteopenia. Clin Radiol 2023; 78:763-771. [PMID: 37573241 DOI: 10.1016/j.crad.2023.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 07/06/2023] [Accepted: 07/11/2023] [Indexed: 08/14/2023]
Abstract
AIM To evaluate the difference in computed tomography (CT) attenuation value of different planes of the 7th thoracic vertebra and investigate the efficacy of axial and sagittal vertebral CT measurements in predicting osteoporosis. MATERIALS AND METHODS Patients who underwent routine chest CT and dual-energy X-ray absorptiometry (DXA) within 1 month were included in this retrospective study. The CT attenuation values of different planes were compared. Logistic regression and receiver operating characteristic (ROC) were used to analyse the difference of each plane in the diagnosis of osteoporosis. RESULTS The study included 1,338 patients (mean age of 61.9±11.9; 54% female). The CT attenuation values decreased successively in the normal group, osteopenia group, and osteoporosis group. The paired t-test results showed that the mid-axial measurements were greater than mid-sagittal measurements, with a mean difference of 9 HU, the difference was statistically significant (p<0.001, 95% confidence interval [CI] = 7.8-10.1). For each one-unit reduction in mid-sagittal CT attenuation value, the risk of osteopenia or osteoporosis increased by 3.6%. To distinguish osteoporosis from non-osteoporosis (osteopenia + normal), the sensitivity was 90% and the specificity was 52.4% at the mid-sagittal threshold of 113.7 HU. CONCLUSIONS The CT attenuation values of mid-sagittal plane have higher diagnostic efficacy than axial planes in predicting osteoporosis. For patients with a sagittal CT attenuation value of <113.7 HU in the T7, further DXA examination is warranted.
Collapse
Affiliation(s)
- J Zhang
- Department of Orthopedics, The First Hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China; Medical Department of Graduate School, Nanchang University, Nanchang, Jiangxi 330006, China; Nanchang Key Laboratory of Orthopaedics, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China
| | - X Luo
- Department of Orthopedics, The First Hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China; Medical Department of Graduate School, Nanchang University, Nanchang, Jiangxi 330006, China; Nanchang Key Laboratory of Orthopaedics, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China
| | - R Zhou
- Medical Department of Graduate School, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Z Dai
- Department of Orthopedics, The First Hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China; Medical Department of Graduate School, Nanchang University, Nanchang, Jiangxi 330006, China; Nanchang Key Laboratory of Orthopaedics, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China
| | - C Guo
- Department of Orthopedics, The First Hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China; Medical Department of Graduate School, Nanchang University, Nanchang, Jiangxi 330006, China; Nanchang Key Laboratory of Orthopaedics, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China
| | - G Qu
- Department of Orthopedics, The First Hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China; Medical Department of Graduate School, Nanchang University, Nanchang, Jiangxi 330006, China; Nanchang Key Laboratory of Orthopaedics, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China
| | - J Li
- Department of Orthopedics, The First Hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China; Medical Department of Graduate School, Nanchang University, Nanchang, Jiangxi 330006, China; Nanchang Key Laboratory of Orthopaedics, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China
| | - Z Zhang
- Department of Orthopedics, The First Hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China; Nanchang Key Laboratory of Orthopaedics, The Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, China.
| |
Collapse
|
3
|
Ji N, Zhang M, Ren L, Wang Y, Hu B, Xiang J, Gong Y, Wu C, Qu G, Ding W, Yin Z, Li S, Wang Z, Zhou L, Chen X, Ma Y, Tang J, Liu Y, Liu L, Huang M. SARS-CoV-2 in the pancreas and the impaired islet function in COVID-19 patients. Emerg Microbes Infect 2022; 11:1115-1125. [PMID: 35343389 PMCID: PMC9037197 DOI: 10.1080/22221751.2022.2059400] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Diabetes mellitus (DM) is one of the most common underlying diseases that may aggravates COVID-19. In the present study, we explored islet function, the presence of SARS-CoV-2 and pathological changes in the pancreas of patients with COVID-19. Oral glucose tolerance tests (OGTTs) and the C-peptide release test demonstrated a decrease in glucose-stimulated C-peptide secretory capacity and an increase in HbA1c levels in patients with COVID-19. The prediabetic conditions appeared to be more significant in the severe group than in the moderate group. SARS-CoV-2 receptors (ACE2, CD147, TMPRSS2 and neuropilin-1) were expressed in pancreatic tissue. In addition to SARS-CoV-2 virus spike protein and virus RNA, coronavirus-like particles were present in the autophagolysosomes of pancreatic acinar cells of a patient with COVID-19. Furthermore, the expression and distribution of various proteins in pancreatic islets of patients with COVID-19 were altered. These data suggest that SARS-CoV-2 in the pancreas may directly or indirectly impair islet function.
Collapse
Affiliation(s)
- Ningfei Ji
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Mingshun Zhang
- Key Laboratory of Antibody Techniques, National Health Commission, Department of Immunology, Nanjing Medical University, Nanjing, People's Republic of China
| | - Liang Ren
- Department of Forensic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yunyun Wang
- Department of Forensic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Bicheng Hu
- Department of Laboratory, Wuhan No. 1 Hospital, Wuhan, People's Republic of China
| | - Jie Xiang
- Department of Laboratory, Wuhan Jinyintan Hospital, Wuhan, People's Republic of China.,Diagnosis and Treatment Research Center of Wuhan Infectious Disease of Chinese Academy of Medical Sciences, Wuhan, People's Republic of China
| | - Yingyun Gong
- Department of Endocrinology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Chaojie Wu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Guoqiang Qu
- Hubei Chongxin Judicial Expertise Center, Wuhan, People's Republic of China
| | - Wenqiu Ding
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Zhiqiang Yin
- Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Shan Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Zhengxia Wang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Lianzheng Zhou
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Xueqin Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Yuan Ma
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Jinhai Tang
- Department of General Surgery, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| | - Yun Liu
- Department of Medical Informatics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, People's Republic of China
| | - Liang Liu
- Department of Forensic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Mao Huang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China
| |
Collapse
|
4
|
Wang J, Yi T, Dong Y, Ran R, Cao F, Li Y, Luo Z, Xu Y, Fu Y, Kuang L, Chen G, Qu G, Yin Y, Li J, Xu X, Chen Y, Song Q, Chu Q. P40.06 A Real-World Study: Efficacy and Safety of Anlotinib for Advanced Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
5
|
Abstract
Background and Objective:
Colorectal cancer (CRC) is a common malignant tumor of
the digestive system; it is associated with high morbidity and mortality. However, an early
prediction of colorectal adenoma (CRA) that is a precancerous disease of most CRC patients
provides an opportunity to make an appropriate strategy for prevention, early diagnosis and
treatment. It has been aimed to develop a machine learning model to predict CRA that could assist
physicians in classifying high-risk patients, make informed choices and prevent CRC.
Methods:
Patients who had undergone a colonoscopy to fill out a questionnaire at the Sixth People
Hospital of Shanghai in China from July 2018 to November 2018 were instructed. A classification
model with the gradient boosting decision tree (GBDT) was developed to predict CRA. This
model was compared with three other models, namely, random forest (RF), support vector
machine (SVM), and logistic regression (LR). The area under the receiver operating characteristic
curve (AUC) was used to evaluate performance of the models.
Results:
Among the 245 included patients, 65 patients had CRA. The area under the receiver
operating characteristic (AUCs) of GBDT, RF, SVM ,and LR with 10 fold-cross validation was
0.8131, 0.74, 0.769 and 0.763. An online prediction service, CRA Inference System, to
substantialize the proposed solution for patients with CRA was also built.
Conclusion:
Four classification models for CRA prediction were developed and compared, and
the GBDT model showed the highest performance. Implementing a GBDT model for screening
can reduce the cost of time and money and help physicians identify high-risk groups for primary
prevention.
Collapse
Affiliation(s)
- Junbo Gao
- Information Engineering College, Shanghai Maritime University, Shanghai, China
| | - Lifeng Zhang
- Information Engineering College, Shanghai Maritime University, Shanghai, China
| | - Gaiqing Yu
- Information Engineering College, Shanghai Maritime University, Shanghai, China
| | - Guoqiang Qu
- Department of Gastroenterology, Eastern Hospital, Shanghai Sixth People Hospital, Shanghai, China
| | - Yanfeng Li
- Information Engineering College, Shanghai Maritime University, Shanghai, China
| | | |
Collapse
|
6
|
Ma X, Guan C, Chen R, Wang Y, Feng S, Wang R, Qu G, Zhao S, Wang F, Wang X, Zhang D, Liu L, Liao A, Yuan S. Pathological and molecular examinations of postmortem testis biopsies reveal SARS-CoV-2 infection in the testis and spermatogenesis damage in COVID-19 patients. Cell Mol Immunol 2020; 18:487-489. [PMID: 33318629 PMCID: PMC7734388 DOI: 10.1038/s41423-020-00604-5] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 11/20/2020] [Indexed: 01/10/2023] Open
Affiliation(s)
- Xixiang Ma
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Chuhuai Guan
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Rong Chen
- Department of Pathology, Wuhan Jinyintan Hospital, Wuhan, Hubei, 430023, China
| | - Yunyun Wang
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Shenglei Feng
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Rongshuai Wang
- Hubei Chongxin Judicial Expertise Center, Wuhan, Hubei, 430415, China
| | - Guoqiang Qu
- Hubei Chongxin Judicial Expertise Center, Wuhan, Hubei, 430415, China
| | - Sijia Zhao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Fengli Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Xiaoli Wang
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Dingyu Zhang
- Research Center for Translational Medicine, Wuhan Jinyintan Hospital, Wuhan, Hubei, 430023, China.,Joint Laboratory of Infectious Diseases and Health, Wuhan Institute of Virology and Wuhan Jinyintan Hospital, Chinese Academy of Sciences, Wuhan, Hubei, 430023, China
| | - Liang Liu
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
| | - Aihua Liao
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
| | - Shuiqiao Yuan
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China.
| |
Collapse
|
7
|
Jin Q, Ma J, Shi Y, Chen C, Wang Y, Zhao E, Cai Y, Qu G. Biomonitoring of chlorinated polyfluoroalkyl ether sulfonic acid in the general population in central and eastern China: Occurrence and associations with age/sex. Environ Int 2020; 144:106043. [PMID: 32858468 DOI: 10.1016/j.envint.2020.106043] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 07/19/2020] [Accepted: 08/05/2020] [Indexed: 06/11/2023]
Abstract
Although chlorinated polyfluoroalkyl ether sulfonic acid (Cl-PFESA) has been reported to be widespread in different environmental matrices of China, its exposure data in the general Chinese population are very limited. In the present study, the serum-to-whole-blood ratio was first assessed for 6:2 Cl-PFESA (mean/median: 2.07/1.82) based on its paired concentrations (n = 36), which allows a comparison in different blood matrices. The exposure levels of Cl-PFESAs in the general population were investigated by collecting blood samples (n = 1516) from residents of seven cities in central and eastern China. 6:2 Cl-PFESA was observed as the third-highest contributing polyfluoroalkyl substance (PFAS) (8.69%), with the median concentration at 2.18 ng/mL, indicating its importance for assessing the human exposure risks of PFASs. The regional difference between 6:2 Cl-PFESA and perfluorooctane sulfonate (PFOS) can be explained by their use pattern in China. Overall, similar to PFOS, 6:2 Cl-PFESA displays significantly increasing levels with increasing age for both males and females, with significantly higher levels in males. However, a significant sex dependence was found for 6:2 Cl-PFESA in one specific age group (41-60), while there was no significance in the other groups although males display higher levels than females. Our study provides robust data regarding human exposure to 6:2 Cl-PFESA in the general population in central and eastern China.
Collapse
Affiliation(s)
- Qi Jin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jinghong Ma
- Hubei Chongxin Judicial Expertise Center, Wuhan 430415, China
| | - Yali Shi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Chuyi Chen
- Hubei Chongxin Judicial Expertise Center, Wuhan 430415, China
| | - Yuan Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Hebei University of Science and Technology, Shijiazhuang, China
| | - Erjuan Zhao
- Hubei Chongxin Judicial Expertise Center, Wuhan 430415, China
| | - Yaqi Cai
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guoqiang Qu
- Hubei Chongxin Judicial Expertise Center, Wuhan 430415, China
| |
Collapse
|
8
|
Liu Q, Shi Y, Cai J, Duan Y, Wang R, Zhang H, Ruan Q, Li J, Zhao L, Ping Y, Chen R, Ren L, Fei X, Zhang H, Tang R, Wang X, Luo T, Liu X, Huang X, Liu Z, Ao Q, Ren Y, Xiong J, He Z, Wu H, Fu W, Zhao P, Chen X, Qu G, Wang Y, Wang X, Liu J, Xiang D, Xu S, Zhou X, Li Q, Ma J, Li H, Zhang J, Huang S, Yao X, Zhou Y, Wang C, Zhang D, Wang G, Liu L, Bian XW. Pathological changes in the lungs and lymphatic organs of 12 COVID-19 autopsy cases. Natl Sci Rev 2020; 7:1868-1878. [PMID: 34676085 PMCID: PMC7543449 DOI: 10.1093/nsr/nwaa247] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 09/05/2020] [Accepted: 09/22/2020] [Indexed: 12/15/2022] Open
Abstract
Systematic autopsy and comprehensive pathological analyses of COVID-19 decedents should provide insights into the disease characteristics and facilitate the development of novel therapeutics. In this study, we report the autopsy findings from the lungs and lymphatic organs of 12 COVID-19 decedents—findings that evaluated histopathological changes, immune cell signature and inflammatory factor expression in the lungs, spleen and lymph nodes. Here we show that the major pulmonary alterations included diffuse alveolar damage, interstitial fibrosis and exudative inflammation featured with extensive serous and fibrin exudates, macrophage infiltration and abundant production of inflammatory factors (IL-6, IP-10, TNFα and IL-1β). The spleen and hilar lymph nodes contained lesions with tissue structure disruption and immune cell dysregulation, including lymphopenia and macrophage accumulation. These findings provide pathological evidence that links injuries of the lungs and lymphatic organs with the fatal systematic respiratory and immune malfunction in critically ill COVID-19 patients.
Collapse
Affiliation(s)
- Qian Liu
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yu Shi
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Jun Cai
- Department of Pathology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yaqi Duan
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Department of Pathology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Rongshuai Wang
- Hubei Chongxin Judicial Expertise Center, Wuhan 430415, China
| | - Hongyan Zhang
- Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Qiurong Ruan
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Department of Pathology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Jiansha Li
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Department of Pathology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Lei Zhao
- Department of Pathology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Yifang Ping
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Rong Chen
- Department of Pathology, Wuhan Jinyintan Hospital, Wuhan 430023, China
| | - Liang Ren
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiaochun Fei
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Heng Zhang
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Rui Tang
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Xi Wang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Department of Pathology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Tao Luo
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Xindong Liu
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Xuequan Huang
- Department of Vascular Surgery, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Zhenhua Liu
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Qilin Ao
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Department of Pathology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yong Ren
- Department of Pathology, General Hospital of Central Theater Command of PLA, Wuhan 430070, China
| | - Jing Xiong
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhicheng He
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Haibo Wu
- Department of Pathology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, China
| | - Wenjuan Fu
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Pengnan Zhao
- Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Xinwei Chen
- Department of Pathology, General Hospital of Central Theater Command of PLA, Wuhan 430070, China
| | - Guoqiang Qu
- Hubei Chongxin Judicial Expertise Center, Wuhan 430415, China
| | - Yunyun Wang
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xi Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | - Jia Liu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan 430071, China
| | - Dongfang Xiang
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Sanpeng Xu
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiaowei Zhou
- Hubei Chongxin Judicial Expertise Center, Wuhan 430415, China
| | - Qingrui Li
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Jinghong Ma
- Hubei Chongxin Judicial Expertise Center, Wuhan 430415, China
| | - Heng Li
- Department of Pathology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230036, China
| | - Jie Zhang
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Sizhe Huang
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiaohong Yao
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Yiwu Zhou
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Chaofu Wang
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Dingyu Zhang
- Research Center for Translational Medicine, Wuhan Jinyintan Hospital, Wuhan 430023, China
- Joint Laboratory of Infectious Diseases and Health, Wuhan Institute of Virology and Wuhan Jinyintan Hospital, Chinese Academy of Sciences, Wuhan 430023, China
| | - Guoping Wang
- Institute of Pathology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
- Department of Pathology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Liang Liu
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiu-Wu Bian
- Institute of Pathology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
- Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| |
Collapse
|
9
|
Abstract
1. The heterologous expression and biological function of the Lactobacillus bacteriocin plantaricin K (PlnK) remain largely unknown. 2. In this study, PlnK was efficiently expressed in competent E. coli BL21 (used in transformation and protein expression) after 12 h, at 37°C and in 0.4 mmol/l isopropyl β- d-1-thiogalactopyranoside (IPTG). 3. The inhibitory bacterial spectrum of recombinant PlnK was investigated and indicated that levels of PlnK above 0.10 mg/ml produced an obvious inhibitory effect on gram-positive bacteria and gram-negative bacteria in vitro. 4. The effects of PlnK on intestinal immune function and the gut microbiome distribution in broilers were studied. The results revealed that, after consuming 2.50 × 10-3 mg/ml of PlnK in water for one week, at the phylum level, the abundance of Firmicutes was increased and the abundance of Bacleroidetes was decreased. At the family level, the abundance of Lachnospiraceae, Ruminococcaceae and Streptococcaceae were significantly improved, but the abundance of Bacteroidaceae was reduced. At the genus level, the abundances of Lachnoclostridium, Streptococcus and Ruminococcaceae-UCG-013, were significantly up-regulated, and the abundance of Bacteroides was down-regulated. 5. After oral liquid intake of PlnK for one week, levels of secretory immunoglobulin A (sIgA) in the duodenal mucus were not significantly increased, but the mRNA levels of TLR3, MDA5, IFN-α, IFN-β, IFITM3 and IFITM10 in the duodenum were significantly reduced. 6. This study demonstrated that the recombinant PlnK could adjust the intestinal microbiome distribution and downregulate the IFN pathway.
Collapse
Affiliation(s)
- L Xu
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - J Zhou
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - G Qu
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - Z Lin
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - Q Fan
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - C Wang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China
| | - Q Wang
- College of Animal Science (College of Bee Science), Fujian Agriculture and Forestry University , Fuzhou, P.R. China.,Fujian Key Laboratory of Traditional Chinese Veterinary Medicine and Animal Health, Fujian Agriculture and Forestry University, Fuzhou , Fujian, P.R. China
| |
Collapse
|
10
|
Qu G, Wang L, Tang X, Wu W, Zhang J, Sun Y. Association between caregivers' anxiety and depression symptoms and feeding difficulties of preschool children: A cross-sectional study in rural China. Arch Pediatr 2019; 27:12-17. [PMID: 31784294 DOI: 10.1016/j.arcped.2019.11.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 04/02/2019] [Revised: 08/20/2019] [Accepted: 11/11/2019] [Indexed: 12/18/2022]
Abstract
PURPOSE To investigate the prevalence of feeding difficulties in preschool children and explore the association between caregivers' anxiety and depression symptoms and preschool children's feeding difficulties. METHODS This cross-sectional study was conducted between June 2017 and January 2018 in rural areas of Anhui province, China. A total of 2231 preschool children and their caregivers were interviewed. Feeding difficulties of preschool children were reported by caregivers using the adapted Identification and Management of Feeding Difficulties (IMFeD) tool. Anxiety and depression symptoms of caregivers were evaluated via the Self-Rating Anxiety Scale (SAS) and the Self-Rating Depression Scale (SDS). RESULTS In total, 54.1% of preschool children were reported to have feeding difficulties by their caregivers. Among all children, when the caregivers had symptoms of anxiety or depression, the children had a higher risk of feeding difficulties. Specifically, for caregivers' anxiety symptoms, the odds ratios (ORs) of feeding difficulties in all children, left-behind children (LBC), and non-LBC were 1.91 (95% confidence interval [CI]: 1.42-2.57), 2.04 (95% CI: 1.34-3.09), and 1.86 (95% CI: 1.21-2.87), respectively; for caregivers' depression symptoms, the ORs of feeding difficulties in all children, LBC, and non-LBC were 1.86 (95% CI: 1.46-2.39), 1.76 (95% CI: 1.24-2.51), and 2.08 (95% CI: 1.45-2.97), respectively. In addition, when caregivers who were parents or grandparents had anxiety or depression symptoms, their children had a higher risk of feeding difficulties. Specifically, for parents and grandparents with anxiety symptoms, the ORs of feeding difficulties were 1.84 (95% CI: 1.14-2.98) and 2.17 (95% CI: 1.46-3.22), respectively; for parents and grandparents with depression symptoms, the ORs of feeding difficulties were 2.03 (95% CI: 1.40-2.95) and 1.93 (95% CI: 1.37-2.73), respectively. CONCLUSION Caregivers' anxiety or depression symptoms are positively associated with feeding difficulties in children.
Collapse
Affiliation(s)
- G Qu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan road, 230032 Hefei, Anhui, China
| | - L Wang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan road, 230032 Hefei, Anhui, China
| | - X Tang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan road, 230032 Hefei, Anhui, China
| | - W Wu
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan road, 230032 Hefei, Anhui, China
| | - J Zhang
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan road, 230032 Hefei, Anhui, China; Department of Neonatology, Children's Hospital of Anhui Medical University, Hefei, Anhui, China
| | - Y Sun
- Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, No. 81 Meishan road, 230032 Hefei, Anhui, China; Center for Evidence-Based Practice, Anhui Medical University, No. 81 Meishan road, 230032 Hefei, Anhui, China.
| |
Collapse
|
11
|
Chi Y, Yao Y, Fang Z, Wang S, Huang G, Cai Q, Shang G, Wang G, Qu G, Wu Q, Jiang Y, Song J, Chen J, Zhu X, Cai Z, Bai C, Lu Y, Yu Z, Shen J, Cai J. Efficacy and safety of anlotinib in advanced leiomyosarcoma: Subgroup analysis of a phase IIB trial (ALTER0203). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz283.026] [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: 11/13/2022] Open
|
12
|
Fang Z, Yao Y, Cai J, Chi Y, Wang S, Huang G, Cai Q, Shang G, Wang G, Qu G, Wu Q, Jiang Y, Song J, Chen J, Cai Z, Zhu X, Bai C, Lu Y, Yu Z, Shen J. The effect of treatment line on the efficacy of anlotinib hydrochloride in advanced alveolar soft part sarcoma patients. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz283.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
13
|
Fang Z, Chi Y, Yao Y, Wang S, Huang G, Cai Q, Shang G, Wang G, Qu G, Wu Q, Jiang Y, Song J, Chen J, Zhu X, Cai Z, Bai C, Lu Y, Yu Z, Shen J, Cai J. Evaluation of hypertension and hand-foot syndrome as markers of anlotinib efficacy in advanced soft tissue sarcoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.030] [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
|
14
|
Yao Y, Chi Y, Fang Z, Wang S, Huang G, Cai Q, Shang G, Wang G, Qu G, Wu Q, Jiang Y, Song J, Chen J, Zhu X, Cai Z, Bai C, Lu Y, Yu Z, Shen J, Cai J. Efficacy of anlotinib in advanced soft tissue sarcoma by prior lines of therapy, age and dose modification. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
15
|
Zhang H, Qu G, Huang S, Liu L, Yu T, Bai R, Liu H, Song F, Wen Y. Primary Screening for Proteins Differentially Expressed in the Myocardium of a Rat Model of Acute Methamphetamine Intoxication. J Forensic Sci Med 2016. [DOI: 10.4103/2349-5014.191460] [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: 11/04/2022] Open
|
16
|
Wang L, Qu G, Dong X, Huang K, Kumar M, Ji L, Wang Y, Yao J, Yang S, Wu R, Zhang H. Long-term effects of methamphetamine exposure in adolescent mice on the future ovarian reserve in adulthood. Toxicol Lett 2015; 242:1-8. [PMID: 26657179 DOI: 10.1016/j.toxlet.2015.11.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 11/11/2015] [Accepted: 11/30/2015] [Indexed: 11/24/2022]
Abstract
Currently, there is an increasing prevalence of adolescent exposure to methamphetamine (MA). However, there is a paucity of information concerning the long-term impact of early exposure to MA upon female fertility and ovarian reserve. The aim of this study was to investigate the effect of long-term MA exposure in adolescents on their ovarian reserve in adulthood. Adolescent mice received intraperitoneal injections of MA (5mg/kg, three times per week) or saline from the 21st postnatal day for an 8 week period. Morphological, histological, biochemical, hormonal and ethological parameters were evaluated. An impaired ovarian reserve and vitality was found in the group treated with MA, manifesting in morphological-apparent mitochondrial damage, an activated apoptosis pathway in the ovarian tissue, a downward expression of ovarian anti-Mullerian hormone (AMH), a decreased number of primordial and growing follicles, an increased number of atretic follicles, and a depressed secretion of AMH, estradiol and progesterone from granulosa cells. However, no significant difference was noticed regarding the estrous cycle, the mating ability and the fertility outcome in the reproductive age of the mice after a period of non-medication. The present results confirmed that a long term exposure to methamphetamine in adolescent mice does have an adverse impact on their ovarian reserve, which indicates that such an early abuse of MA might influence the fertility lifespan of the female mouse.
Collapse
Affiliation(s)
- Lan Wang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Guoqiang Qu
- Criminal Science and Technology Institute of Public Security Bureau of Wuxi City, Wuxi, Jiangsu 214000, China
| | - Xiyuan Dong
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Kai Huang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China; Reproductive Medicine Center, The First Affiliated Hospital of Zheng Zhou University, Zhengzhou, Henan 450000, China
| | - Molly Kumar
- Laboratory of Reproductive Medicine, New York University Langone Medical Center, New York, NY 10014, USA
| | - Licheng Ji
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Ya Wang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Junning Yao
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Shulin Yang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Ruxing Wu
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Hanwang Zhang
- Reproductive Medicine Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China.
| |
Collapse
|
17
|
Zhang X, Lu X, Geng W, Qu G, Zhou Z, Jiang L, Li Y, Chen X, Nie L. Role of Glycol Chitosan-incorporated Ursolic Acid Nanoparticles in the Treatment of Osteosarcoma. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i9.6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Purpose: To investigate the effect of ursolic acid (UA)-incorporated glycol chitosan (GC) nanoparticles on inhibition of human osteosarcoma.Methods: U2OS and Saos-2 osteosarcoma cells were transfected with ursolic acid (UA) incorporated glycol chitosan (GC) nanoparticles. Ultraviolet (UV) spectrophotometry was used to measure drug contents in nanoparticles at 365 nm with empty GC vehicles as blank. Bicinchoninic acid assay (BCA) method was employed to determine protein concentration. Identification of apoptosis and necrosis in osteosarcoma cells was performed by propidium iodide and FITC-annexin V reagents, respectively. FAC Scan flow cytometry was used to analyse apoptotic cells.Results: Among the range of UA concentrations tested, the minimum effective concentration was 10 μM with half inhibitory concentration IC50 of 25 μM. In U2OS cells, treatment with 10 and 25 μM UAinduced apoptosis in 5.89 ± 3.90 and 60.54 ± 5.40 % cells, respectively, compared to 2.05 ± 1.01 % cells for control. In Saos-2 cells, exposure to 10 and 25 μM UA induced apoptosis in 9.86 ± 8.89 and 47.54 ± 14.5 % cells, respectively, compared to 1.79 ± 0.23 % for control cells. Western blot analysis revealed translocation of Bax and Bcl-2 proteins from mitochondria to cell cytosol. Increase in UA concentration from 10 μM to 25 μM led to increase in the proportion of cells in G0/G1 phase and decrease in the number of cells in S and G2/M phases. These results confirm that UA transfection arrests cell cycle in G0/G1 phase in human osteosarcoma cell lines.Conclusion: UA transfection resulted in the inhibition of cell proliferation, Ezh2 expression inhibition, and apoptosis via mitochondrial pathway due to decrease in membrane potential and release of cytochrome C, as well as cell cycle arrest in G0/G1 phase.Keywords: Osteosarcoma, Cell cycle arrest, Palliation, Glycol chitosan, Ursolic acid
Collapse
|
18
|
Liu L, Sun T, Liu Z, Chen X, Zhao L, Qu G, Li Q. Traumatic brain injury dysregulates microRNAs to modulate cell signaling in rat hippocampus. PLoS One 2014; 9:e103948. [PMID: 25089700 PMCID: PMC4121204 DOI: 10.1371/journal.pone.0103948] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Accepted: 07/07/2014] [Indexed: 11/18/2022] Open
Abstract
Traumatic brain injury (TBI) is a common cause for cognitive and communication problems, but the molecular and cellular mechanisms are not well understood. Epigenetic modifications, such as microRNA (miRNA) dysregulation, may underlie altered gene expression in the brain, especially hippocampus that plays a major role in spatial learning and memory and is vulnerable to TBI. To advance our understanding of miRNA in pathophysiological processes of TBI, we carried out a time-course microarray analysis of microRNA expression profile in rat ipsilateral hippocampus and examined histological changes, apoptosis and synapse ultrastructure of hippocampus post moderate TBI. We found that 10 out of 156 reliably detected miRNAs were significantly and consistently altered from one hour to seven days after injury. Bioinformatic and gene ontology analyses revealed 107 putative target genes, as well as several biological processes that might be initiated by those dysregulated miRNAs. Among those differentially expressed microRNAs, miR-144, miR-153 and miR-340-5p were confirmed to be elevated at all five time points after TBI by quantitative RT-PCR. Western blots showed three of the predicated target proteins, calcium/calmodulin-dependent serine protein kinase (CASK), nuclear factor erythroid 2-related factor 2 (NRF2) and alpha-synuclein (SNCA), were concurrently down- regulated, suggesting that miR-144, miR-153 and miR-340-5p may play important roles collaboratively in the pathogenesis of TBI-induced cognitive and memory impairments. These microRNAs might serve as potential targets for progress assessment and intervention against TBI to mitigate secondary damage to the brain.
Collapse
Affiliation(s)
- Liang Liu
- Department of Forensic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
- Key Laboratory of Evidence Science, China University of Political Science and Law, Ministry of Education, Beijing, China
| | - Tingyi Sun
- Department of Forensic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Zilong Liu
- Department of Forensic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
- * E-mail: (ZL); (QL)
| | - Xiaorui Chen
- Department of Forensic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Lili Zhao
- Department of Forensic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Guoqiang Qu
- Department of Forensic Medicine, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
| | - Qingjie Li
- Department of Internal Medicine, The University of Texas Medical Branch at Galveston, Galveston, Texas, United States of America
- * E-mail: (ZL); (QL)
| |
Collapse
|
19
|
de Varennes A, Qu G, Cordovil C, Gonçalves P. Soil quality indicators response to application of hydrophilic polymers to a soil from a sulfide mine. J Hazard Mater 2011; 192:1836-1841. [PMID: 21802201 DOI: 10.1016/j.jhazmat.2011.07.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 07/01/2011] [Accepted: 07/04/2011] [Indexed: 05/31/2023]
Abstract
In soils impacted by mining activities a vegetal cover is required to protect the site from the erosive forces of water and wind. The success of this objective depends on plant establishment and canopy closure. Polyacryalate polymers aid the growth of crops and indigenous plants in soils from sulfide mines. Soil characteristics change as a consequence of polymer application, but indicators that pinpoint these changes have not been identified yet. Our objectives were to (1) identify the sensitive indicators of changes in soil quality following polymer application, (2) relate these with assessment based on plant growth and soil cover. A mine soil was left unamended or received a characterized polyacrylate, a polyacrylate removed from diapers, or shredded diapers. Biomass of Spergularia purpurea was measured and proportion of soil cover evaluated. Soil enzymes, microbial activity, and respiration were analyzed. Availability of potentially toxic trace elements was estimated by their concentration in shoots. Factor analysis identified three factors that accounted for 94% of the variation in parameters, and the scores separated the four treatments. The indicators with greatest communality were correlated with plant growth and soil cover. The best soil quality indicators were As and Zn in shoots, protease, β-glucosidase, and fructose-induced respiration. It seems that the most important indicators to be used to assess the restoration of sulfide mine soils are those related with bioavailability of trace elements and soil enzymatic activities.
Collapse
Affiliation(s)
- A de Varennes
- Biosystems Engineering Center, CEER, Technical University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal.
| | | | | | | |
Collapse
|
20
|
Qu G, de Varennes A. Use of hydrophilic polymers from diapers to aid the establishment of Spergularia purpurea in a mine soil. J Hazard Mater 2010; 178:956-962. [PMID: 20207477 DOI: 10.1016/j.jhazmat.2010.02.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Revised: 01/11/2010] [Accepted: 02/09/2010] [Indexed: 05/28/2023]
Abstract
We used hydrophilic polymers from diapers to aid the establishment of an indigenous plant (Spergularia purpurea (Persoon) G. Don fil.) in a soil from a pyrite mine. Lysimeters were filled with the mine soil with no amendment (control), with a polyacrylate polymer, with a polymer removed from diapers, and with shredded diapers. The establishment of a plant cover was faster in soil amended with polymer from diapers, and 85 days after sowing the soil was completely covered in all treatments except control. The concentrations of trace elements in plant shoots decreased in amended soil. The activities of soil acid phosphatase, beta-glucosidase, protease and cellulase were greatest in soil amended with the polyacrylate polymer or with polymer removed from diapers, while the application of shredded diapers leads to values that were in general intermediate between these treatments and unamended control. Basal- and substrate-induced respirations, and dehydrogenase were greatest in soil amended with polymers, but the presence of a plastic film and fibrous materials from shredded diapers prevented any improvement in these parameters compared with unamended soil. In the second experiment, we evaluated the risk of downward movement of polymers in columns of a sandy soil. Polymer from diapers, with or without Cu, was placed at a 10 cm-depth. Five leaching cycles with artificial rain took place and leachates were analyzed for organic matter and Cu. At the end of the experiment, the soil columns were sliced and each layer was analyzed separately. Some repacking of soil and polymer particles took place, but there was no indication that polymers moved to any great depth in soil columns.
Collapse
Affiliation(s)
- G Qu
- Technical University of Lisbon (TULisbon), Tapada da Ajuda, 1349-017 Lisbon, Portugal
| | | |
Collapse
|
21
|
Qu G, de Varennes A, Cunha-Queda C. Use of insoluble polyacrylate polymers to aid phytostabilization of mine soils: effects on plant growth and soil characteristics. J Environ Qual 2010; 39:168-175. [PMID: 20048304 DOI: 10.2134/jeq2009.0081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We evaluated the use of polyacrylate polymers to aid phytostabilization of mine soils. In a pot experiment, perennial ryegrass was grown in a mine soil and in uncontaminated soil. Growth was stimulated in the polymer-amended mine soil compared with an unamended control, and water-extractable levels of soil Cu and Zn decreased after polymer application. In an experiment performed in six 60-cm-diameter cylinders filled with fertilized mine soil, polymers were applied to three cylinders, with the remainder used as unamended control. Total biomass produced by indigenous plant species sown in polymer-amended soil was 1.8 (Spring-Summer) or 2.4 times (Fall-Winter) greater than that of plants from unamended soil. The application of polymers to the mine soil led to the greatest activity of soil enzymes. Soil pH, biomass of Spergularia purpurea and Chaetopogon fasciculatus, and activities of protease and cellulase had large loadings on principal component (PC)1, whereas growth of Briza maxima and the activities of urease, acid phosphatase, and beta-glucosidase had large loadings on PC2. The treatments corresponding to controls were located on the negative side of PC1 and PC2. Amended treatments were on the positive side of PC2 (Spring-Summer) or on the positive side of PC1 (Fall-Winter), demonstrating differential responses of plants and soil parameters in the two growth cycles.
Collapse
Affiliation(s)
- G Qu
- Technical Univ. of Lisbon (TULisbon), Tapada da Ajuda, 1349-017 Lisboa, Portugal.
| | | | | |
Collapse
|
22
|
Abstract
Scaphoid fractures have the highest prevalence of non-union in the human body, but little is known about the osteogenic potential of cells at the pseudoarthrosis. It was our goal to determine whether cells isolated from non-unions could be stimulated to differentiate into osteoblasts and produce bone in vitro. Fifteen human scaphoid non-unions were excised during surgery and bone from either side of the non-union and the fibrocartilagenous central regions were harvested. Osteoblastic populations were subcultured from these. The number of bone nodules (colonies of osteoblast cells that produced bone) from all three regions was similar to the number of nodules derived from iliac bone cultures from the same patients. Treatment of cells with rhBMP-2 resulted in a 3- to 10-fold increase in bone nodule formation in vitro from cells derived from the non-unions. These data demonstrate that cells at the pseudoarthrosis have osteogenic capability and can be stimulated by rhBMP-2, possibly increasing the ability to heal.
Collapse
Affiliation(s)
- G Qu
- Hand Programme, Toronto Western Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | | |
Collapse
|
23
|
Qu G, Elkins S, Steinberg MH. Thalassemia intermedia and extramedullary hematopoiesis associated with compound heterozygosity for the 532 bp deletion of the beta-globin gene and gene deletion hereditary persistence of fetal hemoglobin. Hemoglobin 2001; 25:91-6. [PMID: 11300354 DOI: 10.1081/hem-100103073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- G Qu
- The G.V. (Sonny) Montgomery VA Medical Center and Department of Medicine, University of Mississippi School of Medicine, Jackson 39216, USA
| | | | | |
Collapse
|
24
|
Qu G, McClelland A, Wright JF. Scaling-up production of recombinant AAV vectors for clinical applications. Curr Opin Drug Discov Devel 2000; 3:750-755. [PMID: 19649903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Recombinant adeno-associated virus (AAV)-based vectors capable of expressing therapeutic gene products in vivo have shown significant promise for human gene therapy. A major challenge for these applications is the development of processes to enable production of large quantities of AAV vectors and purification of material that is well characterized and appropriate for parenteral administration. Several cell culture systems have been developed for AAV vector production, and a limited number of these demonstrate the potential to generate AAV vectors at concentrations compatible with cost-effective large-scale production. Vector purification protocols, in particular those based on the use of scalable column chromatography, have concurrently been developed that demonstrate the potential to provide highly purified AAV vector preparations with high yield. These advances support the potential for AAV vectors as therapeutic agents for gene therapy.
Collapse
Affiliation(s)
- G Qu
- Avigen Inc, Alameda, CA 94502, USA.
| | | | | |
Collapse
|
25
|
Gao G, Qu G, Burnham MS, Huang J, Chirmule N, Joshi B, Yu QC, Marsh JA, Conceicao CM, Wilson JM. Purification of recombinant adeno-associated virus vectors by column chromatography and its performance in vivo. Hum Gene Ther 2000; 11:2079-91. [PMID: 11044910 DOI: 10.1089/104303400750001390] [Citation(s) in RCA: 141] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Recombinant adeno-associated virus (AAV) holds much promise for human gene therapy. While evidence indicates that AAV mediates long-term gene transfer in several different tissues, difficulty in preparing and purifying this viral vector in large quantities remains a major obstacle for evaluating AAV vectors in clinical trials. The current method of purification, based on sedimentation through cesium chloride, is not scaleable and yields product of insufficient quality. In this article we report a new technique for purifying AAV, using a fully closed two-column chromatography system. Yields of AAV vectors purified by this method are high, potency is increased, and the purity of column-purified preparations is substantially improved. We previously reported a novel method to generate AAV based on an AAV Rep/Cap-containing cell line (B50) and an Ad-AAV hybrid virus, which is amenable to scale-up in bioreactors. By combining the new, fully scaleable purification process we report here with the B50/hybrid production method, it would be feasible to prepare AAV vectors to the scale and purity required for clinical and potential commercial applications.
Collapse
Affiliation(s)
- G Gao
- Institute for Human Gene Therapy, University of Pennsylvania, Philadelphia, PA 19104, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Xuan X, Wang J, Tang J, Qu G, Lu J. Vibrational spectroscopic studies on ion solvation of lithium perchlorate in propylene carbonate + N,N-dimethylformamide mixtures. Spectrochim Acta A Mol Biomol Spectrosc 2000; 56A:2131-2139. [PMID: 11058058 DOI: 10.1016/s1386-1425(00)00267-5] [Citation(s) in RCA: 27] [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] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The infrared (IR) and Raman spectra are reported for solutions of lithium perchlorate in propylene carbonate (PC), N,N-dimethylformamide (DMF) and PC + DMF mixtures. The band splittings of symmetric ring deformation for PC and O=CN deformation for DMF suggest that there is a strong interaction between lithium cations and solvent molecules. The solvent molecules have been assigned to two types, the free and complexed molecules. By a comparison of the intensity for the corresponding bands, it has been concluded that Li+ cations are preferentially solvated by DMF molecules in the LiClO4/PC-DMF solutions. This has been explained by the difference in values of donor number.
Collapse
Affiliation(s)
- X Xuan
- School of Chemical and Environmental Sciences, Henan Normal University, Xinxiang, Henan, People's Republic of China
| | | | | | | | | |
Collapse
|
27
|
Qu G, Wang H, Shu H. [Effect of nitrogen on water use efficiency of apple tree]. Ying Yong Sheng Tai Xue Bao 2000; 11:199-201. [PMID: 11767594] [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
This paper studied the effect of nitrogen fertilizer on water use efficiency(WUE) and relevant parameters of two years old potted apple trees(Starkrimson/Malus hupenensis) under different soil moisture condition. The results showed that under adequate soil moisture, WUE was decreased with increasing application of nitrogen fertilizer. Nitrogen fertilizer application resulted in an increase of stomatal conductane. Consequently, the transpiration rate was increased more than photosynthetic rate did. Under soil drought, the WUE of plants applied with nitrogen fertilizer was apparently higher than that of control. The WUE value was in the order of high N > medium N > low N. The improvement of WUE was due to the increase of mesophyll capacity, which led to the promotion of photosynthesis.
Collapse
Affiliation(s)
- G Qu
- Department of Horticulture, Shandong Agricultural University, Taian 271018
| | | | | |
Collapse
|
28
|
Sferra TJ, Qu G, McNeely D, Rennard R, Clark KR, Lo WD, Johnson PR. Recombinant adeno-associated virus-mediated correction of lysosomal storage within the central nervous system of the adult mucopolysaccharidosis type VII mouse. Hum Gene Ther 2000; 11:507-19. [PMID: 10724030 DOI: 10.1089/10430340050015707] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.5] [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: 11/13/2022] Open
Abstract
The central nervous system (CNS) is a predominant site of involvement in several lysosomal storage diseases (LSDs); and for many patients, these diseases are diagnosed only after the onset of symptoms related to the progressive accumulation of macromolecules within lysosomes. The mucopolysaccharidosis type VII (MPS VII) mice are deficient for the lysosomal enzyme beta-glucuronidase and, by early adulthood, develop a significant degree of glycosaminoglycan storage within neuronal, glial, and leptomeningeal cells. Using this animal model, we investigated whether gene transfer mediated by a recombinant adeno-associated virus (rAAV) vector is capable of reversing the progression of storage lesions within the CNS. Adult MPS VII mice received intracerebral injections of 4 X 10(7) infectious units of a rAAV vector carrying the murine beta-glucuronidase (gus-s(a)) cDNA under the transcriptional direction of the cytomegalovirus immediate-early promoter and enhancer. By 1 month after vector administration, transgene-derived beta-glucuronidase was present surrounding the injection site. Enzyme levels were between 50 and 240% of that found in wild-type mice. This level of beta-glucuronidase activity was sufficient to reduce the degree of lysosomal storage. Moreover, the reduction in storage was maintained for at least 3 months post-rAAV administration. These data demonstrate that rAAV vectors can transduce the diseased CNS of MPS VII mice and mediate levels of transgene expression necessary for a therapeutic response. Thus, rAAV vectors are potential tools in the treatment of the mucopolysaccharidoses and other lysosomal storage diseases.
Collapse
Affiliation(s)
- T J Sferra
- Children's Research Institute, Children's Hospital, Columbus, OH 43205, USA.
| | | | | | | | | | | | | |
Collapse
|
29
|
Clark KR, Sferra TJ, Lo W, Qu G, Chen R, Johnson PR. Gene transfer into the CNS using recombinant adeno-associated virus: analysis of vector DNA forms resulting in sustained expression. J Drug Target 1999; 7:269-83. [PMID: 10682906 DOI: 10.3109/10611869909085510] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [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: 11/13/2022]
Abstract
Recombinant adeno-associated virus (rAAV) vectors have shown significant promise as vehicles for in vivo gene transfer, particularly for transduction of organs composed primarily of non-dividing cells (i.e., muscle, CNS, and liver). However, the mechanistic basis for this desirable property remains unclear. To investigate the fate of rAAV genomes in mouse brain, we stereotactically injected an rAAV vector carrying the E. coli lacZ gene into the caudate of BALB/c mice and demonstrate efficient transduction of mouse brain cells that possess cellular morphology consistent with post-mitotic neurons. We observed a significant increase in beta-galactosidase expression from 5 to 56 days after injection that paralleled the disappearance of single-stranded DNA input genomes. Analysis of in vivo viral DNA forms over time out to 5 months after inoculation revealed that rAAV genomes associated with high molecular weight mouse chromosomal DNA by 14 days after injection and persisted for the length of this study. The pattern of Southern hybridization was consistent with random viral integration in predominantly head-to-tail concatameric arrays. Importantly, we also documented an additional DNA species that appears to be a monomeric episomal circular form based on nuclease sensitivity assays. These data are the first to document the existence of multiple vector DNA forms present within the adult murine brain following direct rAAV inoculation and therefore, provide insight into the molecular events that ultimately result in long-term rAAV mediated transgene expression.
Collapse
Affiliation(s)
- K R Clark
- Children's Hospital Research Foundation, Children's Hospital, Division of Molecular Medicine, College of Medicine, The Ohio State University, Columbus 43205, USA.
| | | | | | | | | | | |
Collapse
|
30
|
Qu G, Dubeau L, Narayan A, Yu MC, Ehrlich M. Satellite DNA hypomethylation vs. overall genomic hypomethylation in ovarian epithelial tumors of different malignant potential. Mutat Res 1999; 423:91-101. [PMID: 10029684 DOI: 10.1016/s0027-5107(98)00229-2] [Citation(s) in RCA: 114] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Rearrangements in heterochromatin in the vicinity of the centromeres of chromosomes 1 and 16 are frequent in many types of cancer, including ovarian epithelial carcinomas. Satellite 2 DNA is the main sequence in the unusually long heterochromatin region adjacent to the centromere of each of these chromosomes. Rearrangements in these regions and hypomethylation of satellite 2 DNA are a characteristic feature of patients with a rare recessive genetic disease, ICF (immunodeficiency, centromeric region instability, and facial anomalies). In all normal tissues of postnatal somatic origin, satellite 2 DNA is highly methylated. We examined satellite 2 DNA methylation in ovarian tumors of different malignant potential, namely, ovarian cystadenomas, low malignant potential (LMP) tumors, and epithelial carcinomas. Most of the carcinomas and LMP tumors exhibited hypomethylation in satellite 2 DNA of both chromosomes 1 and 16. A comparison of methylation of these sequences in the three types of ovarian neoplasms demonstrated that there was a statistically significant correlation between the extent of this satellite DNA hypomethylation and the degree of malignancy (P<0.01). Also, there was a statistically significant association (P<0.005) between genome-wide hypomethylation and undermethylation of satellite 2 DNA among these 17 tumors. In addition, we found abnormal hypomethylation of satellite alpha DNA in the centromere of chromosome 1 in many of these tumors. Our findings are consistent with the hypothesis that one of the ways that genome-wide hypomethylation facilitates tumor development is that it often includes satellite hypomethylation which might predispose cells to structural and numerical chromosomal aberrations. Several of the proteins that bind to pericentromeric heterochromatin are known to be sensitive to the methylation status of their target sequences and so could be among the sensors for detecting abnormal demethylation and mediating effects on chromosome structure and stability.
Collapse
MESH Headings
- 5-Methylcytosine
- Carcinoma/chemistry
- Carcinoma/genetics
- Cell Transformation, Neoplastic/genetics
- Centromere/chemistry
- Centromere/genetics
- Chromosomes, Human, Pair 1/chemistry
- Chromosomes, Human, Pair 1/genetics
- Chromosomes, Human, Pair 16/chemistry
- Chromosomes, Human, Pair 16/genetics
- Cytosine/analogs & derivatives
- Cytosine/analysis
- DNA Methylation
- DNA, Neoplasm/chemistry
- DNA, Neoplasm/genetics
- DNA, Satellite/metabolism
- Female
- Humans
- Ovarian Neoplasms/chemistry
- Ovarian Neoplasms/genetics
Collapse
Affiliation(s)
- G Qu
- Department of Biochemistry, Tulane Medical School, New Orleans, LA 70112, USA
| | | | | | | | | |
Collapse
|
31
|
Lo WD, Qu G, Sferra TJ, Clark R, Chen R, Johnson PR. Adeno-associated virus-mediated gene transfer to the brain: duration and modulation of expression. Hum Gene Ther 1999; 10:201-13. [PMID: 10022545 DOI: 10.1089/10430349950018995] [Citation(s) in RCA: 143] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Adeno-associated virus (AAV) is a promising vector for central nervous system (CNS) gene transfer, but a number of issues must be addressed if AAV is to be used for widespread delivery throughout the CNS. Our aim was to test the effect of dose, route of delivery, and hydroxyurea treatment on brain expression of beta-galactosidase activity after cerebral inoculation with an rAAV-lacZ vector (rAAV-beta-gal). We also wished to test whether an immune response appeared against the vector and the transgene product. We found in BALB/c mice that beta-Gal expression increased during the first 2 months after inoculation, then decreased slightly by 4 months, and continued out to 6, 12, and 15 months in single animals. Cerebral injection produced localized beta-Gal expression that did not diffuse to other regions despite a fivefold increase in injection volume. Intraventricular injection resulted in negligible transduction. Antibodies to AAV capsid protein and beta-Gal appeared at low levels at 2 and 4 months, but correlated poorly with beta-Gal expression and did not prevent readministration of rAAV-beta-gal. Hydroxyurea treatment did not result in increased transduction in vivo. We conclude that our study confirms rAAV vectors as having considerable potential for CNS gene transfer; however, several important problems must be addressed if this vector system is to be used for long-term transduction of the entire brain. Sustained, regulatable expression will be needed if rAAV is to be used in the treatment of chronic CNS disease. The difficulty in delivering AAV to diverse regions of the brain is an important problem that must be overcome if these vectors are to be used for anything beyond localized transduction.
Collapse
Affiliation(s)
- W D Lo
- Department of Pediatrics, The Ohio State University, Columbus 43205, USA
| | | | | | | | | | | |
Collapse
|
32
|
Long Z, Qu G, Jian Z, Mo Z. [Relationship between urinary albumin excretion and blood vessel lesion in non-insulin-dependent diabetics]. Hunan Yi Ke Da Xue Xue Bao 1998; 22:259-61. [PMID: 9868130] [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: 02/09/2023]
Abstract
To search the relationships between urinary albumin excretion and blood vessel lesion in non-insulin-dependent diabetics, we compared the differences of blood-lipid, blood pressure, coronary heart disease and retina disease between 58 patients. The group with microalbuminuria had significantly lower concentration of apolipoprotein A, and apolipoprotein A1/apolipoprotein B100 than that of the group with normal albuminuria, but there was no significant change in concentrations of trigly cerides, total cholesterol, high density lipoprotein, and apolipoprotein B100. Coronary heart disease and retina disease were significantly increased in group with microalbuminuria. There was negative correlation with apolipoprotein A1 and value of apolipoprotein A1/apolipoprotein B100, but positive correlation with systolic blood pressure by linear regression analysis for urinary albumin excretion.
Collapse
Affiliation(s)
- Z Long
- Department of Geriatics, Second Affiliated Hospital, Hunan Medical University, Changsha
| | | | | | | |
Collapse
|
33
|
Gao GP, Qu G, Faust LZ, Engdahl RK, Xiao W, Hughes JV, Zoltick PW, Wilson JM. High-titer adeno-associated viral vectors from a Rep/Cap cell line and hybrid shuttle virus. Hum Gene Ther 1998; 9:2353-62. [PMID: 9829534 DOI: 10.1089/hum.1998.9.16-2353] [Citation(s) in RCA: 149] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Adeno-associated virus (AAV) is a potential vector for in vivo gene therapy. A critical analysis of its utility has been hampered by methods of production that are inefficient, difficult to scale up, and that often generate substantial quantities of replication-competent AAV. We describe a novel method for producing AAV that addresses these problems. A cell line, called B50, was created by stably transfecting into HeLa cells a rep/cap-containing plasmid utilizing endogenous AAV promoters. Production of AAV occurs in a two-step process. B50 is infected with an adenovirus defective in E2b, to induce Rep and Cap expression and provide helper functions, followed by a hybrid virus in which the AAV vector is cloned in the E1 region of a replication-defective adenovirus. This results in a 100-fold amplification and rescue of the AAV genome, leading to a high yield of recombinant AAV that is free of replication-competent AAV. Intramuscular injection of vector encoding erythropoietin into skeletal muscle of mice resulted in supraphysiologic levels of hormone in serum that was sustained and caused polycythemia. This method of AAV production should be useful in scaling up for studies in large animals, including humans.
Collapse
Affiliation(s)
- G P Gao
- Institute for Human Gene Therapy, Department of Molecular and Cellular Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Dietzel S, Jauch A, Kienle D, Qu G, Holtgreve-Grez H, Eils R, Münkel C, Bittner M, Meltzer PS, Trent JM, Cremer T. Separate and variably shaped chromosome arm domains are disclosed by chromosome arm painting in human cell nuclei. Chromosome Res 1998; 6:25-33. [PMID: 9510507 DOI: 10.1023/a:1009262223693] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.8] [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: 02/06/2023]
Abstract
Fluorescence in situ hybridization (FISH) with microdissection probes from human chromosomes 3 and 6 was applied to visualize arm and subregional band domains in human amniotic fluid cell nuclei. Confocal laser scanning microscopy and quantitative three-dimensional image analysis showed a pronounced variability of p- and q-arm domain arrangements and shapes. Apparent intermingling of neighbouring arm domains was limited to the domain surface. Three-dimensional distance measurements with pter and qter probes supported a high variability of chromosome territory folding.
Collapse
Affiliation(s)
- S Dietzel
- Institute of Human Genetics, University of Heidelberg, Germany.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Qu G, Yan H, Strauch AR. Actin isoform utilization during differentiation and remodeling of BC3H1 myogenic cells. J Cell Biochem 1997; 67:514-27. [PMID: 9383710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Mouse BC3H1 myogenic cells and a bi-functional chemical cross linking reagent were utilized to investigate the polymerization of newly-synthesized vascular smooth muscle (alpha-actin) and non-muscle (beta- and gamma-actin) actin monomers into native F-actin filament structures during myogenesis. Two actin dimer species were identified by SDS-PAGE analysis of phenylenebismaleimide-cross linked fractions of BC3H1 myoblasts and myocytes. P-dimer was derived from the F-actin-enriched, detergent-insoluble cytoskeleton. Pulse-chase analysis revealed that D-dimer initially was associated with the cytoskeleton but then accumulated in the soluble fraction of lysed muscle cells that contained a non-filamentous or aggregated actin pool. Immunoblot analysis indicated that non-muscle and smooth muscle actins were capable of forming both types of dimer. However, induction of smooth muscle alpha-actin in developing myoblasts coincided with an increase in D-dimer level which may facilitate actin stress fiber assembly. Smooth muscle alpha-actin was rapidly utilized in differentiating myoblasts to assemble extraction-resistant F-actin filaments in the cytoskeleton whereas non-muscle beta- and gamma-actin filaments were more readily dissociated from the cytoskeleton by an extraction buffer containing ATP and EGTA. The data indicate that cytoarchitectural remodeling in developing BC3H1 myogenic cells is accompanied by selective actin isoform utilization that effectively segregates multiple isoactins into different sub-cellular domains and/or supramolecular entities.
Collapse
Affiliation(s)
- G Qu
- Department of Cell Biology, Neurobiology, and Anatomy, Ohio State University, College of Medicine, Columbus 43210-1239, USA
| | | | | |
Collapse
|
36
|
Qu G, Yang J, Li J, Xie L. [Quantitative analysis of phoxim and cypermethrin using wide bore capillary column gas chromatography]. Se Pu 1997; 15:252-3. [PMID: 15739373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
A compound pesticide, 20% P-C emulsion, consisting of 18.5% phoxim and 1.5% cypermethrin pesticides and other accessory agents is especially effective in controlling and killing boll worms. For its quality control some difficulties were encountered. In this paper we propose a simple and practical method for GC analysis of the product by use of a short wide bore capillary column (HP-1, 5m x 0.53mm x 2.65microm), high carrier gas flow rate and high-speed temperature programming etc.. Content analysis of efficient composition of "20% P-C emulsion" was completed under the chromatographic conditions using methyl parathion as an internal standard. Coefficient of variation of phoxim and cypermethrin were 0.67% and 1.0% respectively.
Collapse
Affiliation(s)
- G Qu
- Chemistry Department, Henan Normal University, Xinxiang, 453002
| | | | | | | |
Collapse
|
37
|
Abstract
BACKGROUND We conducted a retrospective cohort study of lung cancer among silicotics in China's metallurgical industries. The study cohort consisted of 4372 male silicotics diagnosed and alive before 1 January 1980. The follow-up period was 1 January 1980 to 31 December 1989. RESULTS Standardized mortality ratios (SMR) of all deaths, all cancers, chronic bronchopneumonia, pneumonia and pulmonary heart disease, and pulmonary tuberculosis showed statistically significant excesses. The SMR for lung cancer for the total cohort was 237 (P < 0.01). When the total study cohort was divided into various categories by occupation (including iron ore mining, ore-sintering, refractory brick manufacturing, iron and steel smelting, and steel casting), significant excess lung cancer risk was observed among silicotics in all categories (SMR > 200, P < 0.01) except for casting (SMR = 157, P > 0.05). Excess lung cancer was not related to years since diagnosis of silicosis or years of exposure to silica. There was more than twofold excess lung cancer risk among both smoking (SMR = 257, P < 0.01) and non-smoking silicotics (SMR = 209, P < 0.01). Silicosis increased the risk of lung cancer.
Collapse
Affiliation(s)
- Z Wang
- Institute of Industrial Health, Anshan Iron and Steel Corporation, Anshan, Liaoning, P R China
| | | | | | | | | | | |
Collapse
|
38
|
Qu G, Li X, Liu J. [Flavonol glycosides of Sonchus arvensis L]. Zhongguo Zhong Yao Za Zhi 1996; 21:292-4, 319. [PMID: 9388936] [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: 02/05/2023]
Abstract
Two flavone glycoside compounds were isolated from Sonchus arvensis by means of chemical and spectroscopic analysis. They were identified as quercetin-3-O-alpha-L-rhamnoside and kaempferol-3, 7-alpha-L-dirhamnoside.
Collapse
Affiliation(s)
- G Qu
- Henan Normal University, Xinxiang
| | | | | |
Collapse
|
39
|
Abstract
RATIONALE AND OBJECTIVES We compared subjective and objective measures of imaging performance using variations of Rose- and Burger-type low-contrast phantoms with trained (radiology residents) and untrained (graduate students) observers. METHODS With one phantom variant, observers indicated the total number of objects seen when test objects were presented in a regular pattern (subjective). With the second phantom variant, observers stated whether a low-contrast disk was present in each locale, thereby permitting the true-positive fraction and false-positive fraction to be determined (objective). RESULTS The untrained-observer group had a significantly lower imaging performance than the trained observer group in subjective tests. These differences were not found on objective tests. For the trained-observer group, similar contrast levels were required in subjective and objective tests to yield a 50% rate of detection. CONCLUSION Trained observers are superior subjects compared with untrained observers for assessing imaging performance using subjective low-contrast phantoms. In experiments using phantoms that allowed objective testing, both groups of observers yield similar results.
Collapse
Affiliation(s)
- G Qu
- Department of Radiology, College of Medicine, University of Florida, Gainesville 32610-0374, USA
| | | | | |
Collapse
|
40
|
Tang D, Qu G, Pang X, Lang Y, Liang Y, Yu Y, Zeng Y, Shao Y. Surveillance and care of four Chinese hemophiliacs with human immunodeficiency virus (HIV) infection. Chin Med Sci J 1993; 8:41-3. [PMID: 8274721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Four Chinese hemophiliacs with HIV infection have been followed up in Zhejiang Province since 1985. A plan for optimal care of HIV seropositive patients was proposed, including surveillance and care; clinical follow-up and preventive education of asymptomatic HIV seropositive patients; keeping the disease confidential so as not to stir up unnecessary social unease; propaganda and health education about acquired immunodeficiency syndrome (AIDS); treatment with traditional Chinese medicines; and regular surveillance of family members and medical personnel. This plan is regarded as feasible and effective for the prevention and control of AIDS in China.
Collapse
Affiliation(s)
- D Tang
- Institute of Hematology, Zhejiang Medical University, Hangzhou
| | | | | | | | | | | | | | | |
Collapse
|
41
|
Qu G, Li J. An outline of study on China's population / environment issues. China Popul Newsl 1990; 7:2-4. [PMID: 12286553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
|
42
|
Chen ZQ, Guan LM, Liu XQ, Qu G, Lei XK, Zhang M, Li J. [Observation on enhanced adhesion to dentin by amino acid]. Hua Xi Yi Ke Da Xue Xue Bao 1989; 20:315-6. [PMID: 2696723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
An amino acid was adopted to pretreat the surface of dentin. The bond strength between GP adhesive and dentin mediated by the amino acid was enhanced after the pretreatment. Furthermore, the longer the stored time of extracted tooth was, the better the effect of adhesion was. This pretreatment will benefit the adhesive restoration for dead tooth or low activity tooth clinically.
Collapse
|
43
|
Qu G. Over the limit. Earthwatch 1989:2. [PMID: 12291350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
|
44
|
Abstract
The Epstein-Barr virus (EBV) has been closely associated with the undifferentiated form of nasopharyngeal carcinoma (NPC), which is particularly common in the high risk area in southeast China. We have examined 37 nasopharyngeal biopsies from patients within this high risk area, including 31 cases of undifferentiated NPC and 6 cases of patients with nasopharyngitis, for the presence of EBV DNA. We found that 26 of 31 biopsies from NPC patients were EBV DNA positive; 3 of the 6 biopsies from patients diagnosed with nasopharyngitis were also EBV DNA positive. Southern blot analysis of the DNAs obtained from the EBV genome positive biopsies, digested with EcoRI, showed that all preparations from the NPC tumors had only one band corresponding to the EcoRI A fragment when a BamHI W fragment was used as a probe. However, one tumor had an additional band with a molecular weight larger than EcoRI A. The presence of this novel band could indicate the integration of viral DNA into host cellular DNA. DNA from the same biopsies were restricted with BamHI and PstI restriction enzymes. The data obtained from these experiments suggest that the EBV genomes in both the NPC tumor biopsies and biopsies from nasopharyngitis patients obtained from an endemic area in South China may be similar to each other and to the B95-8 EBV isolate with respect to the BamHI Y region of the EBV genome. The data also demonstrate that infection of normal nasopharyngeal epithelial cells with EBV takes place in patients with nasopharyngitis.
Collapse
Affiliation(s)
- H Y Zhang
- Department of Medical Microbiology and Immunology, Ohio State University College of Medicine, Columbus 43210
| | | | | | | | | |
Collapse
|
45
|
Qu G. [The medical work of New Fourth Army in Southern Anhui Province] (Chi). Zhonghua Yi Shi Za Zhi 1985; 15:153-6. [PMID: 11621173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
|
46
|
Qu G. [Population control and environment protection]. Renkou Yanjiu 1982:43-8. [PMID: 12338285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
|