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Yu T, Liu H, Lei W, Chen PP, Zhao AQ, Yuan XG, Gao JM, Qian WB. [Efficacy and safety of fourth-generation CD19 CAR-T expressing IL7 and CCL19 along with PD-1 monoclonal antibody for relapsed or refractory large B-cell lymphoma]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:820-824. [PMID: 38049333 PMCID: PMC10694076 DOI: 10.3760/cma.j.issn.0253-2727.2023.10.005] [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] [Grants] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Indexed: 12/06/2023]
Abstract
Objective: This study systematically explore the efficacy and safety of fourth-generation chimeric antigen receptor T-cells (CAR-T), which express interleukin 7 (IL7) and chemokine C-C motif ligand 19 (CCL19) and target CD19, in relapsed or refractory large B-cell lymphoma. Methods: Our center applied autologous 7×19 CAR-T combined with tirelizumab to treat 11 patients with relapsed or refractory large B-cell lymphoma. The efficacy and adverse effects were explored. Results: All 11 enrolled patients completed autologous 7×19 CAR-T preparation and infusion. Nine patients completed the scheduled six sessions of tirolizumab treatment, one completed four sessions, and one completed one session. Furthermore, five cases (45.5%) achieved complete remission, and three cases (27.3%) achieved partial remission with an objective remission rate of 72.7%. Two cases were evaluated for disease progression, and one died two months after reinfusion because of uncontrollable disease. The median follow-up time was 31 (2-34) months, with a median overall survival not achieved and a median progression-free survival of 28 (1-34) months. Two patients with partial remission achieved complete remission at the 9th and 12th months of follow-up. Therefore, the best complete remission rate was 63.6%. Cytokine-release syndrome and immune effector cell-associated neurotoxicity syndrome were controllable, and no immune-related adverse reactions occurred. Conclusion: Autologous 7×19 CAR-T combined with tirelizumab for treating relapsed or refractory large B-cell lymphoma achieved good efficacy with controllable adverse reactions.
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Affiliation(s)
- T Yu
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - H Liu
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - W Lei
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - P P Chen
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - A Q Zhao
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - X G Yuan
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
| | - J M Gao
- Wenzhou Medical University Laboratory Medicine, Wenzhou 325035, China
| | - W B Qian
- Department of Hematology, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310009, China
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2
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Zhao QC, Zhang Z, Zhao LM, Deng ZF, Gao JM, Zhang HL, Lin HC, Liu DF, Mao JM, Zhang HT, Chen YL, Tang WH, Jiang H. A retrospective cohort study of geographic differences in the semen of 1,012 sperm donors in China. Transl Androl Urol 2023; 12:187-196. [PMID: 36915889 PMCID: PMC10006001 DOI: 10.21037/tau-22-578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/02/2022] [Indexed: 02/09/2023] Open
Abstract
Background Male reproductive health has become a serious public health concern, and semen quality is essential to male reproduction. We aimed to investigate geographical differences in the semen quality of sperm donors from northern and southern China by enrolling donors across the country. Methods A total of 1,012 sperm donors were enrolled in this study between 2015 and 2019. Donors were first divided into two parts based on their birthplace according to the "Qinling-Huaihe" line, and secondly, by their residential latitude. Finally, donors were re-classified into two groups (typically north and south) which contained 667 samples. Results Statistically significant differences in sperm concentration were observed among men from different latitudes in China (P=0.04). The sperm concentrations of males from 18° to 27° north latitude were significantly lower than those from 36° to 45° and 45° to 54° [median 131, 134, and 146, respectively, P=0.021 (18° to 27° vs. 36° to 45°) and P=0.01 (18° to 27° vs. 45° to 54°)]. Conclusion We hypothesize environmental pollution and mental stress due to the increased population size may be the main factors underlying differences in the sperm quality of men in northern and southern China.
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Affiliation(s)
- Qian-Cheng Zhao
- Department of Human Sperm Bank, Peking University Third Hospital, Beijing, China
| | - Zhe Zhang
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Lian-Ming Zhao
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Zhen-Feng Deng
- Department of Natural Medicine, Peking University School of Pharmaceutical Sciences, Beijing, China
| | - Jiang-Man Gao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Hong-Liang Zhang
- Department of Human Sperm Bank, Peking University Third Hospital, Beijing, China
| | - Hao-Cheng Lin
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - De-Feng Liu
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Jia-Ming Mao
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Hai-Tao Zhang
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Yu-Long Chen
- Department of Urban and Rural Planning, Peking University, Beijing, China
| | - Wen-Hao Tang
- Department of Urology, Peking University Third Hospital, Beijing, China
| | - Hui Jiang
- Department of Urology, Peking University Third Hospital, Beijing, China
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Liu L, Yu DL, Shi ZB, Zhai WY, Wu N, Gao JM, Huang ZH, Xia F, He XX, Wei YL, Zhang N, Chen WJ, Yang QW. Visible imaging system with changeable field of view on the HL-2A tokamak. Rev Sci Instrum 2022; 93:083512. [PMID: 36050059 DOI: 10.1063/5.0101643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
A new visible imaging system characterizing a flexible optical design and delivering high resolution frames is established on the HL-2A tokamak. It features a modular configuration, consisting of a front-end imaging lens, a set of bilateral telecentric relay lenses, and a camera. To avoid the effects of plasma radiation (x and gamma-rays) and magnetic field variation on the camera, it should be away from the coils. Therefore, the length of the relay lenses determines the total size of the imaging system. The main feature of this imaging system is to realize the variation of field of view (FOV) by interchanging the front-end prime lenses or by using a zoom lens directly rather than designing the optical system afresh, which lowers the cost drastically. The primary purpose of varying FOV is to enrich the versatility of this system, i.e., focusing on a narrow FOV such as gas puff imaging or a wide FOV such as the plasma cross sections. During the HL-2A experiments, this visible imaging system is used to provide high quality pictures of the plasma-wall interaction, divertor detachment, pellet injections, and so on. The frames confirmed that a strong radiation close to the X point is correlated with the completely detached inner target.
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Affiliation(s)
- L Liu
- Southwestern Institute of Physics, Chengdu 610041, China
| | - D L Yu
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Z B Shi
- Southwestern Institute of Physics, Chengdu 610041, China
| | - W Y Zhai
- Southwestern Institute of Physics, Chengdu 610041, China
| | - N Wu
- Southwestern Institute of Physics, Chengdu 610041, China
| | - J M Gao
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Z H Huang
- Southwestern Institute of Physics, Chengdu 610041, China
| | - F Xia
- Southwestern Institute of Physics, Chengdu 610041, China
| | - X X He
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Y L Wei
- Southwestern Institute of Physics, Chengdu 610041, China
| | - N Zhang
- Southwestern Institute of Physics, Chengdu 610041, China
| | - W J Chen
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Q W Yang
- Southwestern Institute of Physics, Chengdu 610041, China
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Gao JM, Goiriz R, Rajpopat S, Goldsmith P. Occupational dermatoses during the second wave of the COVID-19 pandemic: a UK prospective study of 805 healthcare workers. Br J Dermatol 2021; 186:374-376. [PMID: 34608626 PMCID: PMC8652738 DOI: 10.1111/bjd.20779] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 09/22/2021] [Accepted: 09/29/2021] [Indexed: 11/30/2022]
Affiliation(s)
- J M Gao
- Department of Dermatology, Barts Health NHS Trust, London, UK
| | - R Goiriz
- Department of Dermatology, Barts Health NHS Trust, London, UK
| | - S Rajpopat
- Department of Dermatology, Barts Health NHS Trust, London, UK
| | - P Goldsmith
- Department of Dermatology, Barts Health NHS Trust, London, UK
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Feng DD, Chen XH, Guo JJ, Wang KK, Zhang XM, Gao JM. [Preliminary study of the fourth-generation CAR-T cells targeting CS1 in the treatment of refractory and recurrent multiple myeloma]. Zhonghua Zhong Liu Za Zhi 2021; 43:657-665. [PMID: 34289557 DOI: 10.3760/cma.j.cn112152-20200415-00347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To design the fourth-generation chimeric antigen receptor-T (CAR-T) cells that secrete interleukin-7 (IL7) and chemokine C legend 19 (CCL19) on the basis of the second-generation CAR, and to analyze and compare the differences in proliferation, chemotaxis, tumor cell clearance and persistence in the microenvironment of multiple myeloma (MM) between them. Methods: The fourth-generation CAR vector plasmid was constructed by using 2A self-cleaving peptide technology. The third-generation lentiviral packaging system was used to prepare high-titer lentivirus. Flow cytometry was used to monitor the transduction efficiency of lentivirus and the subtype changes of CAR-T cells. The enzyme-linked immunosorbent assay (ELISA) was used to quantify the IL7 and CCL19 secreted by CAR-T cells.The calculation of absolute number of CAR-T cells during culture was used to analysis cell proliferation activity. Transwell migration assay was used to verify the chemotactic ability of CAR-T cells. The specific killing activity of CAR-T cells was detected by using the luciferase bioluminescence method. The NOD-Prkdcem26Cd52Il2rgem26Cd22/Nju (NOD) mouse xenograft model was used to verify the anti-myeloma activity and safety of CAR-T cells in vivo. Results: Flow cytometry results showed that the stable CAR expression rates of the second-generation anti-CS1 CAR-T and fourth-generation anti-CS1-IL7-CCL19 CAR-T cells were (91.50±0.29)% and (46.7±0.12)%, respectively. CAR-T cells were successfully constructed. Subtype analysis demonstrated that the ratio of stem memory T cell (TSCM) in anti-CS1-IL7-CCL19 CAR-T cells was (67.58±0.59)%, which was significantly higher than (50.74 ± 1.01)% of anti-CS1 CAR-T (P=0.000 1), with more strong immune memory function and better durability. Anti-CS1-IL7-CCL19 CAR-T cells can continuously secrete IL7 and CCL19 compared to MOCK-T and anti-CS1 CAR-T (P<0.000 1). The number of anti-CS1-IL7-CCL19 CAR-T cells reached (22.77±0.79)×10(6) on the 9th day after lentivirus transduction, which was significantly higher than (9.40±0.79)×10(6) of anti-CS1 CAR-T cells (P=0.000 1), with stronger proliferation ability. The number of chemotaxis cells of anti-CS1-IL7-CCL19 CAR-T cells to reactive T cells was (109.0±4.04), which was significantly higher than (9.33±1.20) of MOCK-T (P<0.000 1) and (7.33±0.88) of anti-CS1 CAR-T (P<0.000 1), with stronger chemotactic ability. The specific killing activity showed that both anti-CS1-IL7-CCL19 CAR-T and anti-CS1 CAR-T cells had specific killing efficacies when compared with the MOCK-T cells (P<0.000 1). Animal experiment indicated that anti-CS1-IL7-CCL19 CAR-T cells significantly reduced the tumor burden (P<0.000 1) and extended the overall survival time (P=0.006 1) of tumor-bearing mice. Conclusions: The anti-CS1-IL7-CCL19 CAR-T cells designed in this study show stronger proliferative activity, chemotactic ability, and durability without affecting the anti-myeloma activity in vivo and in vivo, which provides strategies for overcoming the defects of low survival rate, poor durability and inhibition by tumor microenvironment of traditional CAR-T cells, and offers preliminary experimental basis for the clinical application of the fourth-generation CAR-T cells.
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Affiliation(s)
- D D Feng
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - X H Chen
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - J J Guo
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - K K Wang
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - X M Zhang
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - J M Gao
- School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
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6
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Gao JM, Garioch JJ, Fadhil M, Tan E, Shah N, Moncrieff M. Planning slow Mohs excision margins for lentigo maligna: a retrospective nonrandomized cohort study comparing reflectance confocal microscopy margin mapping vs. visual inspection with dermoscopy. Br J Dermatol 2021; 184:1182-1183. [PMID: 33377177 DOI: 10.1111/bjd.19764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 12/23/2020] [Accepted: 12/27/2020] [Indexed: 11/30/2022]
Affiliation(s)
- J M Gao
- Department of Dermatology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK.,Department of Dermatology, Royal Free London NHS Foundation Trust, London, UK
| | - J J Garioch
- Department of Dermatology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK.,Norwich Medical School, University of East Anglia, Norwich, UK
| | - M Fadhil
- Department of Dermatology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK
| | - E Tan
- Department of Dermatology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK
| | - N Shah
- Department of Dermatology, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK
| | - M Moncrieff
- Norwich Medical School, University of East Anglia, Norwich, UK.,Department of Plastic Surgery, Norfolk and Norwich University Hospitals NHS Foundation Trust, Norwich, UK
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7
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Li YF, Wang JL, Gao JM. [Professional identity and its influence factors of administrators in public hospitals in Shanghai]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:114-119. [PMID: 33455142 DOI: 10.3760/cma.j.cn112150-20200721-01039] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Objective: This study investigated the professional identity of administrators in 3rd class hospitals in Shanghai, analyzing the professional identity of administrators and associated factors in public hospitals. Methods: In May 2019, Huashan Hospital conducted a questionnaire survey. Through the analysis of the survey data, this study discussed the correlation between the professional identity degree and the external factors. Three main dimensions of occupational identity were extracted by principal component analysis, namely the professional self-identity, organizational identity and social identity. External influencing factors were analyzed by factor analysis, and five main factors were extracted. Results: It was found that the professional self-identity was much higher than the organizational and social identity. The degree of organizational identity was significantly related to external factors (r=0.212,0.426,0.146,0.580,0.610,P <0.01). Respect factors (r=0.553,0.580,0.570) and self-realization factors (r=0.563,0.610,0.433) had the highest correlation with professional identity. Conclusion: Initiating with improving organizational identity, the authorities and hospitals should establish a scientific and reasonable promotion and incentive mechanism to enhance the degree of professional identity.
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Affiliation(s)
- Y F Li
- Huashan Hospital, Fudan University, Shanghai 200040, China
| | - J L Wang
- Huashan Hospital, Fudan University, Shanghai 200040, China
| | - J M Gao
- Huashan Hospital, Fudan University, Shanghai 200040, China
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8
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Yang YF, Wang R, Fang JG, Zhong Q, Huang ZG, Chen XH, Zhang SR, Gao JM, Li SL, Li PD, Hou LZ, Chen XJ, Ma HZ, Feng L, Zhang Y, He SZ, Lian M, Liu SZ. [A single-arm prospective study on induction chemotherapy and subsequent comprehensive therapy for advanced hypopharyngeal squamous cell carcinoma: report of 260 cases in a single center]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2020; 55:1143-1153. [PMID: 33342130 DOI: 10.3760/cma.j.cn115330-20200417-00306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the significance of induction chemotherapy and subsequent comprehensive therapy for overall survival rate (OS) and larynx dysfunction-free survival rate (LDFS) in patients with advanced hypopharyngeal carcinoma. Methods: Patients who met the inclusion criteria with the diagnoses of advanced hypopharyngeal carcinoma between 2011 and 2017 received 2 or 3 cycles of TPF regimen induction chemotherapy. Patients who attained complete response (CR) received radical chemotherapy. Patients who attained partial response (PR) and the reduction of tumor volume was more than 70% were defined as large PR and received concurrent chemoradiotherapy. When the tumor volume reduction of PR patients was less than 70%, they were defined as small PR. (CR+large PR) group was defined as effective group. Patients who did not reach CR and large PR were defined as uneffective group and underwent radical surgery and received adjuvant radiotherapy as appropriate after the surgery. The end points of the study were OS, progression-free survival (PFS) and LDFS. Chi-square (χ(2)) test was used for correlation analysis. Survival analysis was performed by the Kaplan-Meier method with a Log-rank test. Cox proportional hazards model was used for univariate and multivariate survival analysis. Results: A total of 260 patients were enrolled in the study. The follow-up period ranged from 5 to 83 months, with an average of 24.7 months. The 3-year and 5-year OS rate was 46.0% and 32.6%, respectively. The 3-year and 5-year PFS rate was 41.0% and 26.6%, respectively. The 3-year and 5-year LDFS rate was 37.9% and 24.8%, respectively. Poor outcome of induction chemotherapy, advanced N stage, strong positive Ki-67 immunohistochemistry (all P<0.001) were negative prognostic factors. The advanced clinical stage was positively related to the poor outcome of induction chemotherapy (P=0.015). There was no significant difference in OS and PFS between the large PR group and the small PR group (all P>0.005). Conclusion: TPF regimen induction chemotherapy and subsequent comprehensive therapy for patients with advanced hypopharyngeal carcinoma may improve the quality of life of patients, with high OS rate and LDFS rate.
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Affiliation(s)
- Y F Yang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - R Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - J G Fang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Q Zhong
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Z G Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - X H Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - S R Zhang
- Department of Oncology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - J M Gao
- Department of Radiotherapy, Seventh Medical Center, General Hospital of the Chinese People's Liberation Army, Beijing 100700, China
| | - S L Li
- Department of Radiology, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - P D Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - L Z Hou
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - X J Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - H Z Ma
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - L Feng
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - S Z He
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - M Lian
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - S Z Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan Provincial People's Hospital, Hainan 570311, China
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Gao JM, Hu B, Shen E. [Research progress on the association between myocardial fibroblast transdifferentiation and diabetic cardiomyopathy]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:885-889. [PMID: 33076631 DOI: 10.3760/cma.j.cn112148-20191027-00659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- J M Gao
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - B Hu
- Department of Ultrasound in Medicine, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China
| | - E Shen
- Department of Ultrasound in Medicine, Shanghai Tongren Hospital, Shanghai 200366, China
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Zhang WQ, Yu J, Chen LL, Cheng FF, Zhang R, Gao JM, Zhang J, Zhao GM, Tian JM, Zhang T. [Hospitalization rates for influenza-associated severe acute respiratory illness in children younger than five years old in Suzhou of China, 2016-2018]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:1056-1059. [PMID: 31607055 DOI: 10.3760/cma.j.issn.0253-9624.2019.10.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We analyzed the influenza surveillance data of Children's Hospital of Suzhou University from 2016 to 2018 and estimated the hospitalization burden of children under 5 years old due to influenza infection in Suzhou. The results showed that the influenza virus positive rate of 1 451 severe acute respiratory infection (SARI) cases in Children's Hospital of Suzhou University was 13.6% (95%CI: 11.8%-15.3%; 197 cases), among which the influenza pandemic intensity in 2017-2018 was relatively high, and A/H1N1 was the main pandemic virus. It was estimated that the hospitalization rate of influenza-related SARI in children under 5 years old in Suzhou was 6.9‰ (95%CI: 6.6‰-7.2‰), among which the hospitalization rate of children aged<6 months was higher, up to 11.4‰ (95%CI: 9.9‰-12.8‰).
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Affiliation(s)
- W Q Zhang
- School of Public Health, Fudan University/Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
| | - J Yu
- School of Public Health, Fudan University/Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
| | - L L Chen
- Department of Prevention and control, Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - F F Cheng
- Department of infection, Soochow University Affiliated Children's Hospital, Suzhou 21500, China
| | - R Zhang
- United States and China program office for emerging and re-emerging infectious diseases, China Center of Disease Control and Prevention, Beijing 100050, China
| | - J M Gao
- School of Public Health, Fudan University/Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
| | - J Zhang
- Department of Prevention and control, Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - G M Zhao
- School of Public Health, Fudan University/Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
| | - J M Tian
- Department of infection, Soochow University Affiliated Children's Hospital, Suzhou 21500, China
| | - T Zhang
- School of Public Health, Fudan University/Key Laboratory of Public Health Safety, Ministry of Education, Shanghai 200032, China
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11
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Liu LJ, Lu XJ, Gao JM, Wang RJ, Cheng GX. Effect of the APP17 peptide on diabetic encephalopathy. J BIOL REG HOMEOS AG 2019; 33:251-257. [PMID: 30693738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- L J Liu
- Department of Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
- Department of Radiology, The First Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - X J Lu
- Emergency Department, The Armed Police General Hospital of Inner Mongolia, Hohhot, China
| | - J M Gao
- Department of Radiology, The First Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - R J Wang
- Department of Radiology, The First Affiliated Hospital of Inner Mongolia Medical University, Hohhot, China
| | - G X Cheng
- Department of Imaging Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Yu J, Zhang T, Wang Y, Gao JM, Hua J, Tian JM, Ding YF, Zhang J, Chen LL, Li JQ, Zhao GM. [Clinical characteristics and economic burden of influenza among children under 5 years old, in Suzhou, 2011-2017]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 39:847-851. [PMID: 29936759 DOI: 10.3760/cma.j.issn.0254-6450.2018.06.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the clinical characteristics and economic burden of influenza-like illness (ILI) children aged 0-59 months in the outpatient settings in Suzhou, China, 2011-2017. Methods: From March 2011 to February 2017, we conducted a prospective surveillance program on ILI for children aged less than 5 years at Soochow University Affiliated Children's Hospital. Through standard questionnaires and follow-up survey via telephone, we collected information regarding the demographic characteristics, medical history, clinical symptoms and both direct and indirect costs associated with influenza, of the patients. We then compared clinical characteristics and economic burden of influenza A/H1N1, A/H3N2, and B infections among children with ILI. Results: We enrolled 6 310 patients with ILI from March 2011 to February 2017 and collected all their throat swabs. 791 (12.9%) of the swabs showed positive for influenza virus, including 88 (11.1%) subtype influenza A/H1N1, 288 (36.4%) subtype influenza A/H3N2, and 415(52.5%) type influenza B. The proportions of cough, rhinorrhea, wheezing, vomiting and convulsion in influenza-positive children were higher than those influenza-negative children. Except for the prevalence rates of cough (χ(2)=9.227, P=0.010), wheezing (χ(2)=7.273, P=0.026) and vomiting (χ(2)=8.163, P=0.017), other clinical symptoms appeared similar between the three viral subtypes. Among all the ILI children, the average total cost per episode of influenza was 688.4 Yuan (95%CI: 630.1-746.7) for influenza-negative children; 768.0 Yuan (95%CI: 686.8-849.3) for influenza-positive children and 738.3 Yuan (95%CI: 655.5-821.1) for influenza B. Children with influenza A/H1N1 spent much more than those with influenza A/H3N2 or influenza B in the total cost (χ(2)=7.237, P=0.028). Conclusion: Children infected influenza showed higher prevalence rates of cough, rhinorrhea, wheezing, vomiting and convulsion than those without influenza. Influenza A/H1N1 subtype caused heavier economic burden than the other two influenza subtypes.
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Affiliation(s)
- J Yu
- School of Public Health, Fudan University, Shanghai 200032, China
| | - T Zhang
- School of Public Health, Fudan University, Shanghai 200032, China
| | - Y Wang
- School of Public Health, Fudan University, Shanghai 200032, China
| | - J M Gao
- School of Public Health, Fudan University, Shanghai 200032, China
| | - J Hua
- Soochow University Affiliated Children's Hospital, Suzhou 215003, China
| | - J M Tian
- Soochow University Affiliated Children's Hospital, Suzhou 215003, China
| | - Y F Ding
- Soochow University Affiliated Children's Hospital, Suzhou 215003, China
| | - J Zhang
- Suzhou Center for Disease Control and Prevention, Suzhou 215000, China
| | - L L Chen
- Suzhou Center for Disease Control and Prevention, Suzhou 215000, China
| | - J Q Li
- Soochow University Affiliated Children's Hospital, Suzhou 215003, China
| | - G M Zhao
- School of Public Health, Fudan University, Shanghai 200032, China
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Huang Y, Gao JM, Zhang CM, Zhao HC, Zhao Y, Li R, Yu Y, Qiao J. Assessment of growth and metabolism characteristics in offspring of dehydroepiandrosterone-induced polycystic ovary syndrome adults. Reproduction 2017; 152:705-714. [PMID: 27798284 PMCID: PMC5097128 DOI: 10.1530/rep-16-0081] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 09/19/2016] [Indexed: 11/17/2022]
Abstract
Polycystic ovary syndrome (PCOS) is a common reproductive disorder that has many characteristic features including hyperandrogenemia, insulin resistance and obesity, which may have significant implications for pregnancy outcomes and long-term health of women. Daughters born to PCOS mothers constitute a high-risk group for metabolic and reproductive derangements, but no report has described potential growth and metabolic risk factors for such female offspring. Hence, we used a mouse model of dehydroepiandrosterone (DHEA)-induced PCOS to study the mechanisms underlying the pathology of PCOS by investigating the growth, developmental characteristics, metabolic indexes and expression profiles of key genes of offspring born to the models. We found that the average litter size was significantly smaller in the DHEA group, and female offspring had sustained higher body weight, increased body fat and triglyceride content in serum and liver; they also exhibited decreased energy expenditure, oxygen consumption and impaired glucose tolerance. Genes related to glucolipid metabolism such as Pparγ, Acot1/2, Fgf21, Pdk4 and Inhbb were upregulated in the liver of the offspring in DHEA group compared with those in controls, whereas Cyp17a1 expression was significantly decreased. However, the expression of these genes was not detected in male offspring. Our results show that female offspring in DHEA group exhibit perturbed growth and glucolipid metabolism that were not observed in male offspring.
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Affiliation(s)
- Ying Huang
- Reproductive Medical CenterDepartment of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,Key Laboratory of Assisted ReproductionMinistry of Education, Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijing, China
| | - Jiang-Man Gao
- Reproductive Medical CenterDepartment of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijing, China
| | - Chun-Mei Zhang
- Reproductive Medical CenterDepartment of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,Key Laboratory of Assisted ReproductionMinistry of Education, Beijing, China
| | - Hong-Cui Zhao
- Reproductive Medical CenterDepartment of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijing, China
| | - Yue Zhao
- Reproductive Medical CenterDepartment of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China .,Key Laboratory of Assisted ReproductionMinistry of Education, Beijing, China
| | - Rong Li
- Reproductive Medical CenterDepartment of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China .,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijing, China
| | - Yang Yu
- Reproductive Medical CenterDepartment of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China .,Key Laboratory of Assisted ReproductionMinistry of Education, Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijing, China
| | - Jie Qiao
- Reproductive Medical CenterDepartment of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,Key Laboratory of Assisted ReproductionMinistry of Education, Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive TechnologyBeijing, China
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Chen HX, Cai C, Liu JY, Zhang ZG, Yuan M, Jia JN, Sun ZG, Huang HR, Gao JM, Li WM. [Discriminatory power of variable number on tandem repeats loci for genotyping Mycobacterium tuberculosis strains in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2017. [PMID: 28647985 DOI: 10.3760/cma.j.issn.0254-6450.2017.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Using the standard genotype method, variable number of tandem repeats (VNTR), we constructed a VNTR database to cover all provinces and proposed a set of optimized VNTR loci combinations for each province, in order to improve the preventive and control programs on tuberculosis, in China. Methods: A total of 15 loci VNTR was used to analyze 4 116 Mycobacterium tuberculosis strains, isolated from national survey of Drug Resistant Tuberculosis, in 2007. Hunter-Gaston Index (HGI) was also used to analyze the discriminatory power of each VNTR site. A set combination of 12-VNTR, 10-VNTR, 8-VNTR and 5-VNTR was respectively constructed for each province, based on 1) epidemic characteristics of M. tuberculosis lineages in China, with high discriminatory power and genetic stability. Results: Through the completed 15 loci VNTR patterns of 3 966 strains under 96.36% (3 966/4 116) coverage, we found seven high HGI loci (including QUB11b and MIRU26) as well as low stable loci (including QUB26, MIRU16, Mtub21 and QUB11b) in several areas. In all the 31 provinces, we found an optimization VNTR combination as 10-VNTR loci in Inner Mongolia, Chongqing and Heilongjiang, but with 8-VNTR combination shared in other provinces. Conclusions: It is necessary to not only use the VNTR database for tracing the source of infection and cluster of M. tuberculosis in the nation but also using the set of optimized VNTR combinations in monitoring those local epidemics and M. tuberculosis (genetics in local) population.
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Affiliation(s)
- H X Chen
- Zhejiang Provincial Key Laboratory for Technology, Application of Model Organisms, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China; National Tuberculosis Clinical Laboratory of China, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - C Cai
- The Drug-resistant TB Key Laboratory of Beijing, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - J Y Liu
- Zhejiang Provincial Key Laboratory for Technology, Application of Model Organisms, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China; National Tuberculosis Clinical Laboratory of China, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - Z G Zhang
- The Institute of Tuberculosis Prevention and Control of Changping District, Beijing 102200, China
| | - M Yuan
- Yuncheng City Emergency Center, Yuncheng 044000, China
| | - J N Jia
- National Tuberculosis Clinical Laboratory of China, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China; Beijing Municipal Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing 100069, China
| | - Z G Sun
- National Tuberculosis Clinical Laboratory of China, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - H R Huang
- National Tuberculosis Clinical Laboratory of China, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China
| | - J M Gao
- Zhejiang Provincial Key Laboratory for Technology, Application of Model Organisms, School of Laboratory Medicine and Life Science, Wenzhou Medical University, Wenzhou 325035, China
| | - W M Li
- National Tuberculosis Clinical Laboratory of China, Beijing Chest Hospital, Capital Medical University, Beijing 101149, China; Beijing Municipal Key Laboratory of Clinical Epidemiology, School of Public Health, Capital Medical University, Beijing 100069, China
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Deng F, Lv JH, Wang HL, Gao JM, Zhou ZL. Expanding public health in China: an empirical analysis of healthcare inputs and outputs. Public Health 2016; 142:73-84. [PMID: 28057203 DOI: 10.1016/j.puhe.2016.10.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 08/18/2016] [Accepted: 10/12/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The Chinese Government claims that China's health policy is primarily focused on prevention. However, this does not appear to be the case. Researchers with an interest in China's health policy may be aware that the Chinese Government launched a health reform in 2009 to improve the health status of the entire population by 2020.1 This health reform has been in place for 7 years, and only 4 years now remain to achieve the overall objectives by 2020. This study analyzed the main inputs and outputs of China's health reform in order to identify the main problems and highlight the major challenges. It is hoped that this study will provide some reference for health reform in China and other developing countries. STUDY DESIGN This study focused on health, with human resources and healthcare costs as the main input indicators, and 2-week prevalence of illness and prevalence of non-communicable diseases as the main output indicators. By longitudinal comparison of real data from 2009 to 2014, the effects of China's health reform were analyzed to identify the main challenges, enabling suggestions to be made for future reference. METHODS This was a retrospective analysis of empirical data. Data were collected between 2009 and 2014 as follows: (1) data on the distribution of healthcare professionals were collected from the Statistical Bulletin of China's Health Development, issued by the National Health and Family Planning Commission every year between 2009 and 2014; (2) data on government health expenditure were obtained from the Annual National Public Fiscal Expenditure Data, released by the Financial Ministry of the People's Republic of China from 2009 to 2014; (3) data on the prevalence of chronic diseases, 2-week prevalence of illness, residents' medical service demands, and utilization of health services were obtained from the Fourth and Fifth National Health Care Surveys in 2008 and 2013; and (4) data on total healthcare expenditure, medical expenditure and out-of-pocket payments were obtained from the 2015 China Statistical Yearbook. RESULTS From 2009 to 2014, China's healthcare human resources were distributed primarily in hospitals that focus on providing treatment. By 2014, 62.5% of the health professionals and technical personnel were distributed in hospitals. From 2009, the Chinese Government spent more money on health care than previously, with approximately 67% spent on disease treatment and 14.19% spent on disease prevention. However, the 2-week prevalence of illness increased by 5.2 percentage points, and the prevalence of chronic diseases increased by 9 percentage points. Meanwhile, residents' out-of-pocket payments for health care were as high as 50.61% of the total healthcare expenditure and were particularly high in rural areas. CONCLUSION China should adjust the direction of its health reform as soon as possible to focus on improving health status rather than treatment of disease. In the future, as China's population ageing trend intensifies, China must take effective measures or the country's non-communicable disease rates will continue to increase. To meet this challenge, China's health reform should take effective measures to control the rising trend of the incidence of non-communicable diseases. First, China should focus on the core goal of its health reform policy, which is disease prevention. Second, China should focus on strengthening public health systems to effectively prevent and control key epidemic diseases. Third, China should increase the number of public health personnel, improve the level of education and training of public health personnel and increase the input of funds into the field of public health as soon as possible.
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Affiliation(s)
- F Deng
- Xi'an Jiao Tong University Health Science Center, Xi'an, China; Baoji Centre for Disease Control and Prevention, Baoji, China
| | - J H Lv
- Central Hospital of Baoji City, Baoji, Shaanxi Province, China
| | - H L Wang
- Baoji Centre for Disease Control and Prevention, Baoji, China
| | - J M Gao
- Xi'an Jiao Tong University, School of Public Policy and Administration, Xi'an, China.
| | - Z L Zhou
- Xi'an Jiao Tong University, School of Public Policy and Administration, Xi'an, China
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Li D, Dong YB, Deng W, Shi ZB, Fu BZ, Gao JM, Wang TB, Zhou Y, Liu Y, Yang QW, Duan XR. Bayesian tomography and integrated data analysis in fusion diagnostics. Rev Sci Instrum 2016; 87:11E319. [PMID: 27910627 DOI: 10.1063/1.4960542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this article, a Bayesian tomography method using non-stationary Gaussian process for a prior has been introduced. The Bayesian formalism allows quantities which bear uncertainty to be expressed in the probabilistic form so that the uncertainty of a final solution can be fully resolved from the confidence interval of a posterior probability. Moreover, a consistency check of that solution can be performed by checking whether the misfits between predicted and measured data are reasonably within an assumed data error. In particular, the accuracy of reconstructions is significantly improved by using the non-stationary Gaussian process that can adapt to the varying smoothness of emission distribution. The implementation of this method to a soft X-ray diagnostics on HL-2A has been used to explore relevant physics in equilibrium and MHD instability modes. This project is carried out within a large size inference framework, aiming at an integrated analysis of heterogeneous diagnostics.
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Affiliation(s)
- Dong Li
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - Y B Dong
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - Wei Deng
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - Z B Shi
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - B Z Fu
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - J M Gao
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - T B Wang
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - Yan Zhou
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - Yi Liu
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - Q W Yang
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
| | - X R Duan
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, People's Republic of China
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Zhong WL, Shen Y, Zou XL, Gao JM, Shi ZB, Dong JQ, Duan XR, Xu M, Cui ZY, Li YG, Ji XQ, Yu DL, Cheng J, Xiao GL, Jiang M, Yang ZC, Zhang BY, Shi PW, Liu ZT, Song XM, Ding XT, Liu Y. Observation of Double Impurity Critical Gradients for Electromagnetic Turbulence Excitation in Tokamak Plasmas. Phys Rev Lett 2016; 117:045001. [PMID: 27494476 DOI: 10.1103/physrevlett.117.045001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Indexed: 06/06/2023]
Abstract
The impact of impurity ions on a pedestal has been investigated in the HL-2A Tokamak, at the Southwestern Institute of Physics, Chengdu, China. Experimental results have clearly shown that during the H-mode phase, an electromagnetic turbulence was excited in the edge plasma region, where the impurity ions exhibited a peaked profile. It has been found that double impurity critical gradients are responsible for triggering the turbulence. Strong stiffness of the impurity profile has been observed during cyclic transitions between the I-phase and H-mode regime. The results suggest that the underlying physics of the self-regulated edge impurity profile offers the possibility for an active control of the pedestal dynamics via pedestal turbulence.
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Affiliation(s)
- W L Zhong
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - Y Shen
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - X L Zou
- CEA, IRFM, F-13108 Saint-Paul-lez-Durance, France
| | - J M Gao
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - Z B Shi
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - J Q Dong
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
- Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - X R Duan
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - M Xu
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - Z Y Cui
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - Y G Li
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - X Q Ji
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - D L Yu
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - J Cheng
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - G L Xiao
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - M Jiang
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - Z C Yang
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - B Y Zhang
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - P W Shi
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - Z T Liu
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - X M Song
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - X T Ding
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
| | - Yong Liu
- Southwestern Institute of Physics, P.O. Box 432, Chengdu 610041, People's Republic of China
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Lu CL, Yan J, Zhi X, Xia X, Wang TR, Yan LY, Yu Y, Ding T, Gao JM, Li R, Qiao J. Basic fibroblast growth factor promotes macaque follicle development in vitro. Reproduction 2015; 149:425-33. [DOI: 10.1530/rep-14-0557] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Fertility preservation is an important type of frontier scientific research in the field of reproductive health. The culture of ovarian cortices to i) initiate primordial follicle growth and ii) procure developing follicles for later oocyte maturation is a promising fertility preservation strategy, especially for older women or cancer patients. At present, this goal remains largely unsubstantiated in primates because of the difficulty in attaining relatively large follicles via ovarian cortex culture. To overcome this hurdle, we cultured macaque monkey ovarian cortices with FSH, kit ligand (KL), basic fibroblast growth factor (bFGF), and/or epidermal growth factor (EGF). The various factors and factor combinations promoted primordial follicle development to different extents. Notably, both bFF (bFGF, 100 ng/ml and FSH, 50 ng/ml) and KF (KL, 100 ng/ml and FSH, 50 ng/ml) contributed to the activation of primordial follicles at day 12 (D12) of culture, whereas at D18, the proportions of developing follicles were significantly higher in the bFF and KF groups relative to the other treatment groups, particularly in the bFF group. Estradiol and progesterone production were also highest in the bFF group, and primary follicle diameters were the largest. Up until D24, the bFF group still exhibited the highest proportion of developing follicles. In conclusion, the bFGF–FSH combination promotes nonhuman primate primordial follicle developmentin vitro, with the optimal experimental window within 18 days. These results provide evidence for the future success of human ovarian cortex culture and the eventual acquisition of mature human follicles or oocytes for fertility restoration.
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Gui Z, Liu HQ, Wang Y, Yuan QH, Xin N, Zhang X, Li XL, Pi YS, Gao JM. Detection of the genetic variation of polygalacturonase-inhibiting protein gene 2 in autotetraploid alfalfa (Medicago sativa) using an improved SSCP technique. Genet Mol Res 2014; 13:10184-93. [PMID: 25501230 DOI: 10.4238/2014.december.4.13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, 2 approaches were adopted to obtain good single-strand conformation polymorphism (SSCP) data for autotetraploid alfalfa; primers were added to PCR products, and fluorescent-labeled primers were utilized. PCR-SSCP conditions for a 331-bp fragment in the coding region of polygalacturonase-inhibiting protein gene 2 in alfalfa (MsPGIP2) were optimized, and the results showed that the best SSCP gel pattern could be obtained when the loading mixture was made by mixing 1 μL PCR products, 0.2 to 0.8 μL unlabeled primers (50 μM) and 4 to 16 μL loading buffer. Furthermore, the use of the fluorescent-labeled primers resulted in 2 separated electrophoresis images from 2 complementary single DNA strands, thus making the determination of alleles and idiotypes a relatively easy task. In addition, the results of sequencing prove that the determination of alleles and idiotypes were accurate based on SSCP analysis. Finally, a total of 9 alleles with 18 SNP sites were identified for MsPGIP2 in the alfalfa variety 'Algonquin'. In conclusion, MsPGIP2 possessed great genetic variation, and the addition of primers to the PCR products in combination with the fluorescent labeling of primers could significantly improve the sensitivity and resolution of SSCP analysis. This technique could be used for genetic diversity detection and marker-assisted breeding of useful genes in autopolyploid species such as alfalfa.
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Affiliation(s)
- Z Gui
- Key Laboratory of Crop Genetics and Breeding, Department of Agronomy, Tianjin Agricultural University, Tianjin, China
| | - H Q Liu
- Key Laboratory of Crop Genetics and Breeding, Department of Agronomy, Tianjin Agricultural University, Tianjin, China
| | - Y Wang
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, China
| | - Q H Yuan
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, China
| | - N Xin
- Key Laboratory of Crop Genetics and Breeding, Department of Agronomy, Tianjin Agricultural University, Tianjin, China
| | - X Zhang
- Key Laboratory of Crop Genetics and Breeding, Department of Agronomy, Tianjin Agricultural University, Tianjin, China
| | - X L Li
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, China
| | - Y S Pi
- Key Laboratory of Crop Genetics and Breeding, Department of Agronomy, Tianjin Agricultural University, Tianjin, China
| | - J M Gao
- Key Laboratory of Crop Genetics and Breeding, Department of Agronomy, Tianjin Agricultural University, Tianjin, China
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Abstract
The loquat (Eriobotrya japonica (Thunb.) Lindl.), an important perennial evergreen fruit crop that originated in China and is also cultivated as an ornamental plant, is well known all over the world for high nutritional, medicinal, economic, and ecological values (4). So far, it has been grown in more than 30 countries (1) and is becoming an important industry in China, Spain, Japan, India, Pakistan, and Turkey (2). During an investigation from May to August of 2013, severely withered loquat plants were observed in Kunming city of Yunnan Province (25°02' N; 102°42' E), Southwest China. Initial symptoms were brown lesions of leaves and canker on one to several branches, leaves of the whole tree turned wilted. Cross sections of diseased plants revealed irregularly shaped brown discoloration in the xylem of the trunk. A fungus was consistently isolated from the leaf when diseased leaves were incubated between two slices of fresh carrot root. Spore masses were picked from the apices of perithecia and transferred to malt extract agar medium (MEA) and incubated at 25°C. After perithecium formation, observed perithecia were black, globose (176.0 to 303.2 × 186.0 to 274.3 μm) and showed a long black neck (634.2 to 809.9 μm). Ascospore had the typical format of a "hat" with dimensions of 4.6 to 6.3 × 3.3 to 4.8 μm. Cylindrical endoconidia (7.1 to 36.1 × 2.9 to 6.0 μm) were found. Chlamydospores were ovoid or obpyriform and smooth (8.6 to 12.1 × 6.9 to 12.1 μm). PCR amplification was carried out for one isolate, YT2. The ITS region of rDNA was sequenced using the procedures of Thorpe et al (3). Analysis of ITS sequence data (GenBank Accession Nos. KF963101 and KF963102) showed that the isolates were 99% homologous to the isolate of Ceratocystis fimbriata from diseased Colocasia esculenta in Cuba, China, and Hawaii (AY526304 to 06) by BLAST analysis. Therefore, the fungus was identified as C. fimbriata based on morphological and molecular characteristics. Pathogenicity of the six isolates from this study was tested by inoculation of 1-year-old pot grown seedlings of loquat. The soil of six plants was inoculated by drenching with 40 ml spore suspension (106 spores/ml). Control plants were inoculated with 40 ml of sterile distilled water. The plants were maintained in a controlled greenhouse at 25°C and watered weekly. After inoculation for 1 week, all plants produced wilt symptoms; as the disease progressed, leaves withered and died after 3 weeks of inoculation while control plants remained symptomless. C. fimbriata was successfully re-isolated from the infected trees and no fungal growth was observed in the controls. The pathogenicity assay showed that C. fimbriata was pathogenic to loquat. To our knowledge, this is the first report of C. fimbriata causing wilt of loquat in China. Since C. fimbriata is one of the most aggressive plant pathogens on a wide variety of perennial as well as agronomic crop plants worldwide, and the infection can pose a significant threat to the production of loquat, it is critical to deploy appropriate management strategies to limit the fungus spread. References: (1) J. J. Feng et al. Acta Hort. 750:117, 2007. (2) J. Janick. Acta Hort. 750:27, 2007. (3) D. J. Thorpe et al. Phytopathology 95:316, 2005. (4) J. Yan et al. Pak. J. Bot. 44:1215, 2012.
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Affiliation(s)
- J Li
- College of Plant Protection, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. This work was supported by National Natural Science Foundation of China (No. 31270067)
| | - J M Gao
- College of Plant Protection, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. This work was supported by National Natural Science Foundation of China (No. 31270067)
| | - Y H Han
- College of Plant Protection, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. This work was supported by National Natural Science Foundation of China (No. 31270067)
| | - Y X Sun
- College of Plant Protection, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. This work was supported by National Natural Science Foundation of China (No. 31270067)
| | - Q Huang
- College of Plant Protection, Yunnan Agricultural University, Kunming, 650201, Yunnan, China. This work was supported by National Natural Science Foundation of China (No. 31270067)
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Gao JM, Liu Y, Li W, Cui ZY, Dong YB, Lu J, Xia ZW, Yi P, Yang QW. Inversion of infrared imaging bolometer based on one-dimensional and three-dimensional modeling in HL-2A. Rev Sci Instrum 2014; 85:043505. [PMID: 24784605 DOI: 10.1063/1.4870408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Linear regularization has been applied to the HL-2A infrared imaging bolometer to reconstruct local plasma emission with one-dimensional (1D) and three-dimensional (3D) modeling under the assumption of toroidal symmetry. In the 3D modeling, a new method to calculate the detector point response function is introduced. This method can be adapted to an arbitrarily shaped pinhole. With the full 3D treatment of the detector geometry, up to 50% of the mean-squared error is reduced compared with the 1D modeling. This is attributed to the effects of finite detector size being taken into account in the 3D modeling. Meanwhile, the number of the bolometer pixels has been optimized to 20 × 20 by making a trade-off between the number of bolometer pixels and the sensitivity of the system. The plasma radiated power density distributions have been calculated as a demonstration using 1D modeling and 3D modeling, respectively.
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Affiliation(s)
- J M Gao
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Y Liu
- Southwestern Institute of Physics, Chengdu 610041, China
| | - W Li
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Z Y Cui
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Y B Dong
- Southwestern Institute of Physics, Chengdu 610041, China
| | - J Lu
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Z W Xia
- Southwestern Institute of Physics, Chengdu 610041, China
| | - P Yi
- Southwestern Institute of Physics, Chengdu 610041, China
| | - Q W Yang
- Southwestern Institute of Physics, Chengdu 610041, China
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Gao JM, Liu Y, Li W, Lu J, Dong YB, Xia ZW, Yi P, Yang QW. Minimum Fisher regularization of image reconstruction for infrared imaging bolometer on HL-2A. Rev Sci Instrum 2013; 84:093503. [PMID: 24089825 DOI: 10.1063/1.4820920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
An infrared imaging bolometer diagnostic has been developed recently for the HL-2A tokamak to measure the temporal and spatial distribution of plasma radiation. The three-dimensional tomography, reduced to a two-dimensional problem by the assumption of plasma radiation toroidal symmetry, has been performed. A three-dimensional geometry matrix is calculated with the one-dimensional pencil beam approximation. The solid angles viewed by the detector elements are taken into account in defining the chord brightness. And the local plasma emission is obtained by inverting the measured brightness with the minimum Fisher regularization method. A typical HL-2A plasma radiation model was chosen to optimize a regularization parameter on the criterion of generalized cross validation. Finally, this method was applied to HL-2A experiments, demonstrating the plasma radiated power density distribution in limiter and divertor discharges.
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Affiliation(s)
- J M Gao
- Southwestern Institute of Physics, Chengdu, Sichuan 610041, China
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Gao JM, Yan J, Li R, Li M, Yan LY, Wang TR, Zhao HC, Zhao Y, Yu Y, Qiao J. Improvement in the quality of heterotopic allotransplanted mouse ovarian tissues with basic fibroblast growth factor and fibrin hydrogel. Hum Reprod 2013; 28:2784-93. [DOI: 10.1093/humrep/det296] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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24
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Xiao YH, Wang TT, Zhao Q, Wang CB, Lv JH, Nie L, Gao JM, Ma XC, Hsu WH, Zhou EM. Development of indirect ELISAs for differential serodiagnosis of classical and highly pathogenic porcine reproductive and respiratory syndrome virus. Transbound Emerg Dis 2012; 61:341-9. [PMID: 23217174 DOI: 10.1111/tbed.12040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 10/06/2012] [Indexed: 11/28/2022]
Abstract
The objective of this study was to develop two indirect enzyme-linked immunosorbent assays (iELISAs) for detection of serum antibodies against classical vaccine strain of porcine reproductive and respiratory syndrome virus (PRRSV) and highly pathogenic PRRSV (HP-PRRSV). To detect the common antibodies against classical and HP-PRRSV, the coating antigen used in the iELISA (designated iELISA-180) was the antigen of Nsp2-180, the 180aa at amino terminal of Nsp2. To detect the different antibodies against classical and HP-PRRSV, the coating antigen in the second iELISA (designated iELISA-D29) was Nsp2-D29, the deleted 29aa in Nsp2 of HP-PRRSV. The antigen concentration and serum dilutions were optimized using a draughtboard titration. The cut-off values of 0.361 at OD(450nm) for the iELISA-180 and 0.27 at OD(450nm) for the iELISA-D29 were determined by testing a panel of 120 classical PRRSV positive and 198 PRRSV negative pig serum samples, which generated the specificity of 97.1% and 96.7%, the sensitivity of 96.9% and 96.3% for iELISA-180 and iELISA-D29, respectively. The agreements between the Western blot and iELISA-180 and iELISA-D29 were 98%, 96.7%, respectively. The developed iELISAs can be used to differentiate serologically HP-PRRSV from the vaccinated or classical PRRSV in clinical serum samples.
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Affiliation(s)
- Y H Xiao
- Department of Basic Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Shandong, China
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25
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Wang Y, Bi B, Yuan QH, Li XL, Gao JM. Association of AFLP and SCAR markers with common leafspot resistance in autotetraploid alfalfa (Medicago sativa). Genet Mol Res 2012; 11:606-16. [PMID: 22535396 DOI: 10.4238/2012.march.14.4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
To identify amplified fragment length polymorphism (AFLP) markers associated with resistance or susceptibility of alfalfa to common leafspot (CLS) caused by the fungus Pseudopeziza medicaginis (Dermateaceae), bulked segregant analysis was conducted based on an F(1(M × M)) population of 93 plants and a BC(1)S population of 91 plants. Three AFLP markers, ACTCAA(R206), TAGCAC(R185), and GGACTA(S264), were found to be associated with CLS resistance or susceptibility. All three markers were found at significantly different frequencies (71.9, 80.3 and 91.8%) compared to resistant or susceptible plants in the original population. Subsequently, these three AFLP markers were converted into three SCAR markers, ACTCAA(R136), TAGCAC(R128) and GGACTA(S254), which are easier to employ in breeding programs. The three SCAR markers were used in a randomly selected population with 50% resistance; the probability of finding one resistant plant was increased to 67.3, 66.7 and 90.0% with markers ACTCAA(R136), TAGCAC(R128) and GGACTA(S254), independently. If two of the SCAR markers were used simultaneously, the probability would be higher than 89%. The three SCAR markers identified in this study would be applicable for selection for CLS resistance in alfalfa breeding programs. Moreover, the genetic analysis indicated that CLS resistance in alfalfa is conferred by a single dominant gene.
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Affiliation(s)
- Y Wang
- Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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Chen ZW, Gao JM, Huo XX, Wang L, Yu L, Halm-Lai F, Xu YH, Song WJ, Hide G, Shen JL, Lun ZR. Genotyping of Toxoplasma gondii isolates from cats in different geographic regions of China. Vet Parasitol 2011; 183:166-70. [PMID: 21757292 DOI: 10.1016/j.vetpar.2011.06.013] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2011] [Revised: 06/08/2011] [Accepted: 06/17/2011] [Indexed: 10/18/2022]
Abstract
Fourteen isolates of Toxoplasma gondii were isolated from cats from 4 different geographic provinces (Anhui, Hubei, Shanxi and Guangdong) in China and their genetic diversity with 8 nuclear loci SAG2, SAG3, BTUB, GRA6, L358, PK1, c22-8, c29-2, and an apicoplast locus Apico, was analysed by restriction fragment length polymorphisms (RFLPs). Two genotypes from these 14 isolates were identified but none of them belongs to the typical genetic types (types I, II and III). It is unexpected that such high similarity was observed in these 14 isolates although their original regions are significantly distant. Our results strongly indicate that the three traditional clonal lineages of types I, II and III of this parasite may not be preponderant in China. In addition, our results show that the genotypes of T. gondii in China may be highly clonal with atypical genotypes and higher virulence.
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Affiliation(s)
- Z W Chen
- Department of Parasitology and Key Laboratories of Pathogen Biology and Zoonoses, Anhui Medical University, Hefei 230032, China
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Abstract
We report a nanoimprint lithography method combined with photolithography on a bi-layer polymer setup to define nano-worms laterally in nano-gratings and produce uniform worm-shaped polymeric nanoparticles in aqueous solution by dissolving water soluble sacrificial layer poly(vinyl alcohol) (PVA). Process control of the thin residue layer, SU-8 curing using broadband UV source, and warm development to remove any residue are necessary to ensure success of this technique. The use of water soluble PVA as a releasing layer and elimination of an invasive plasma etching for the releasing process makes this protocol highly compatible with biomaterials. Direct release and suspension of fluorescent worm-shaped nanoparticles (length to width ratio up to 75) in aqueous solution were demonstrated. Compared to the worm-shaped nanoparticles made by self-assembly, these lithographically defined nano-worms have much better controllability and uniformity on the shape, size, and aspect ratio. The availability of these precisely defined non-spherical particles would be important to develop a comprehensive understanding of the shape effects of nanoparticles on their efficacy in nanomedicine applications.
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Affiliation(s)
- L Tao
- Department of Electrical Engineering, University of Texas at Dallas, Richardson, TX 75080, USA
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Wang XF, Guo YJ, Zhang BY, Zhao WQ, Gao JM, Wan YZ, Li F, Han J, Wang DX, Dong XP. Creutzfeldt-Jakob disease in a Chinese patient with a novel seven extra-repeat insertion in PRNP. Case Reports 2009; 2009:bcr06.2009.2002. [DOI: 10.1136/bcr.06.2009.2002] [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
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29
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Gao JM, Ming J, He B, Gu ZW, Zhang XD. Controlled release of 9-nitro-20(S)-camptothecin from methoxy poly(ethylene glycol)-poly(D,L-lactide) micelles. Biomed Mater 2008; 3:015013. [DOI: 10.1088/1748-6041/3/1/015013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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30
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Wang XF, Guo YJ, Zhang BY, Zhao WQ, Gao JM, Wan YZ, Li F, Han J, Wang DX, Dong XP. Creutzfeldt-Jakob disease in a Chinese patient with a novel seven extra-repeat insertion in PRNP. J Neurol Neurosurg Psychiatry 2007; 78:201-3. [PMID: 17229753 PMCID: PMC2077666 DOI: 10.1136/jnnp.2006.09433] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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31
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Song HS, Elssfah EM, Zhang J, Lin J, Luo JJ, Liu SJ, Huang Y, Ding XX, Gao JM, Qi SR, Tang C. High-Aspect-Ratio Aluminum Borate Nanowire Bundles Supported by Sucrose. J Phys Chem B 2006; 110:5966-9. [PMID: 16553404 DOI: 10.1021/jp056655+] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
High-aspect-ratio and single-crystal aluminum borate (Al(18)B(4)O(33)) nanowire bundles with an ordered orientation were synthesized by using an innovative sucrose-assisted growth process. The process involves the dehydration and polycondensation of aluminum borate-sucrose solution to form a highly viscous precursor. The sucrose plays a crucial role in the growth of the nanowire bundles by supporting as a polymeric substrate and a type of adhesive template. Electron microscopy was used to characterize the high-aspect-ratio nanowire bundles. A possible growth mechanism for the nanowire bundles is proposed.
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Affiliation(s)
- H S Song
- Department of Physics, Central China Normal University, Wuhan 430079, P R China
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Gao JM, Zhou XB, Xiao XL, Zhang J, Chen L, Gao C, Zhang BY, Dong XP. Influence of guanidine on proteinase K resistance in vitro and infectivity of scrapie prion protein PrP(Sc). Acta Virol 2006; 50:25-32. [PMID: 16599182] [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: 05/08/2023]
Abstract
As the scrapie prion protein PrP(Sc) is rich in beta-sheets it aggregates into prion rods, which show infectivity and proteinase K (PK) resistance. Consequently, dissociation of prion rods and breakdown of beta-sheets in PrP(Sc) by denaturation results in loss of both infectivity and PK-sensitivity. In this study, the effects of guanidine (Gdn), which solubilizes and denatures proteins by breaking down their higher structure, on the solubility, the PK-resistance in vitro and the infectivity of PrP(Sc) of scrapie strain 263K was examined. The infectivity was assayed by intracerebral inoculation into hamsters. Brain tissues of scrapie-infected hamsters were used for preparation of homogenates and crude extracts of PrP(Sc). A treatment of PrP(Sc) with Gdn enhanced its PK-sensitivity in a dose-dependent manner. The PK-resistance in vitro of PrP(Sc) denatured with lower concentrations of Gdn (<2.5 mol/l) could partially resume by renaturation. Gdn markedly reduced or, at higher concentrations, even destroyed the infectivity of PrP(Sc). On the other hand, the infectivity of PrP(Sc) inactivated by denaturation could be partially restored by renaturation. These results confirmed our assumption that all the alternations in the PK-resistance and the infectivity of PrP(Sc) caused by Gdn resulted from changes in its higher structure. However, it should be emphasized that a complete loss of PK-resistance of PrP(Sc) may not necessarily mean its full non-infectivity.
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Affiliation(s)
- J M Gao
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Ying-Xin Rd. 100, Beijing 100052, P.R. China
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Gao JM, Hu JY, Wan Y, An W, An L, Zheng ZG. Butyltin compounds distribution in the coastal waters of Bohai Bay, People's Republic of China. Bull Environ Contam Toxicol 2004; 72:945-953. [PMID: 15266690 DOI: 10.1007/s00128-004-0335-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- J M Gao
- Department of Urban and Environmental Science, College of Environmental Science, Peking University, Beijing, 100871, People's Republic of China
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Abstract
From the chloroform/methanol extract of the fruiting bodies of the ascomycete Chinese truffle Tuber indicum Cooke et Massee, a new trihydroxylated monounsaturated fatty acid (1) has been isolated. The structure of this new linoleic acid-derived metabolite was established as 9,10,11-trihydroxy-(12Z)-12-octadecenoic acid by means of spectroscopic and chemical methods. The fatty acid composition of the chloroform-soluble fraction of this fungus was analyzed by gas chromatography-mass spectrometry. The content of the predominant unsaturated fatty acids (oleic and linoleic acids) is as high as 68%. The use of dimethyl disulfide adduct was effective in the determination of the position of the double bond, and the glycol oxidation fission reaction with sodium metaperiodate supported on silica gel was helpful in establishing the location of the trihydroxylic groups in the new fatty acid.
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Affiliation(s)
- J M Gao
- College of Life Sciences, Northwest Science & Technology University of Agriculture and Forestry, Yangling, Shaanxi, People's Republic of China.
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Abstract
A new C(18)-phytosphingosine ceramide containing non-hydroxy fatty acid, armillaramide (1), has been isolated together with ergosterol peroxide from the fruiting bodies of the basidiomycete Armillaria mellea. Its structure was established as (2S,3S,4R)-2-hexadecanoylamino-octadecane-1,3,4-triol by spectroscopic and chemical methods.
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Affiliation(s)
- J M Gao
- Laboratory of Phytochemisty, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, PR China
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Abstract
A new 9-methyl-sphinga-4,8-dienine-containing glucocerebroside (1), together with two additional known analogs, cerebrosides B and D, was isolated from the chloroform-soluble lipid fraction of the ethanol and chloroform/methanol extract of the fruiting bodies of the basidiomycete Polyporus ellisii Berk. and characterized. The structure and relative stereochemistry of the new compound were identified as (2S,3R,4E,8E-1-(beta-D-glucopyranosyl)-3-hydroxy-2-[(R)-2'-hydroxyheptadecanoyl]amino-9-methyl-4,8-octadecadiene by means of spectroscopic (1H,13C, and two-dimensional nuclear magnetic resonance; mass spectrometry) and chemical methods.
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Affiliation(s)
- J M Gao
- Department of Phytochemisty, Kunming Institute of Botany, Chinese Academy of Sciences, People's Republic of China
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Abstract
A new phytosphingosine-type ceramide (1) was isolated along with nine other compounds-5alpha,8alpha-epidioxy(22E,24R)-ergosta-6,22-dien-3beta-ol, 5alpha,8alpha-epidioxy-(24S)-ergosta-6-en-3beta-ol, (24S)-ergosta-7-ene-3beta,5alpha,6beta-triol, (22E,24R)-ergosta-7,22-dien-3beta,5alpha,6beta-triol, inosine, adenine, L-pyroglutamic acid, fumaric acid, and D-allitol from the ethanol and chloroform/methanol extract of the fruiting bodies of the basidiomycete Russula cyanoxanotha (Schaeff.) Fr. The structure of (1) was established as (2S,3S,4R,2'R)-2-(2'-hydroxytetracosanoylamino) octadecane-1,3,4-triol by means of spectroscopic and chemical methods.
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Affiliation(s)
- J M Gao
- Laboratory of Phytochemistry, Kunming Institute of Botany, the Chinese Academy of Sciences, People's Republic of China
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Zeng YT, Zhang ML, Chen MJ, Zhou XD, Huang Y, Ren ZR, Huang SZ, Hu MX, Wu XQ, Gao JM. Sexing bovine embryos using PCR amplification of bovine SRY sequence. Sci China B 1994; 37:170-6. [PMID: 8068189] [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: 01/28/2023]
Abstract
This study analyses the bovine SRY DNA sequence by direct sequencing procedure, followed by the designation of the PCR primers specific for bovine SRY. Using PCR amplification of bovine SRY gene, the embryo sex was determined. The results of the embryo sex identification were confirmed after the embryo transfer and pregnancies.
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Affiliation(s)
- Y T Zeng
- Shanghai Institute of Medical Genetics, Shanghai Children's Hospital, PRC
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Abstract
A method for detecting HPV DNA in cervical cancer tissue was developed without using isotopes. The DNA samples from the cancer tissues were first subjected to amplification by PCR, followed by polyacrylamide gel electrophoresis to identify the specific amplified fragment. The specificity and sensitivity of the PCR method are described. Compared with the dot hybridization technique, it is shown that the method is able to detect HPV DNA in cervical cancer tissues.
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Affiliation(s)
- Y K He
- Department of Biochemistry, First Medical College of PLA, People's Republic of China
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