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Gao Y, Cao T, Lin KZ, Guo DL, Zhang SF, Zhu XL, Zhang RT, Yan SC, Xu S, Zhao DM, Ma X. A high resolution reaction microscope with universal two-region time-focusing method. Rev Sci Instrum 2024; 95:043302. [PMID: 38578918 DOI: 10.1063/5.0202775] [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: 02/07/2024] [Accepted: 03/19/2024] [Indexed: 04/07/2024]
Abstract
This paper presents a novel reaction microscope designed for ion-atom collision investigations, established at the Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China. Its time-of-flight (TOF) spectrometer employs an innovative flight-time focusing method consisting of two acceleration regions, providing optimal time focusing conditions for charged fragments with diverse initial velocities. The TOF spectrometer's axis intentionally tilts by 12° relative to the ion beam direction, preventing potential obstructions from the TOF grid electrodes. The introduced focusing method allows for a flexible time-focusing TOF spectrometer design without restricting the length ratio of the two regions. In addition, this configuration in our case significantly suppresses noise on the recoil ion detector produced by residual gas in the ion beam trajectory, which is a considerable challenge in longitudinal spectrometers. In a test experiment on the single electron capture reaction involving 62.5 keV/u He2+ ions and a helium atomic beam, the recoil longitudinal momentum resolution achieved 0.068 atomic units. This novel configuration and successful test run show excellent precision for ion-atom collision studies.
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Affiliation(s)
- Y Gao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - T Cao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - K Z Lin
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - D L Guo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S F Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X L Zhu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R T Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S C Yan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S Xu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - D M Zhao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X Ma
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Weng RH, Zhao WY, He TY, Li XL, Li XQ, Zhao DM, Han YK, Zeng P, Tang XM, Wu XC, Liu L, Yang J. [Clinical research of multisystem inflammatory syndrome in children]. Zhonghua Er Ke Za Zhi 2023; 61:1086-1091. [PMID: 38018045 DOI: 10.3760/cma.j.cn112140-20230805-00081] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2023]
Abstract
Objective: To analyze the clinical characteristics of children with multisystem inflammatory syndrome (MIS-C) associated with SARS-CoV-2 in China, and to improve the understanding of MIS-C among pediatricians. Methods: Case series study.Collect the clinical characteristics, auxiliary examinations, treatment decisions, and prognosis of 64 patients with MIS-C from 9 hospitals in China from December 2022 to June 2023. Results: Among the 64 MIS-C patients, 36 were boys and 28 were girls, with an onset age being 2.8 (0.3, 14.0) years. All patients suffered from fever, elevated inflammatory indicators, and multiple system involvement. Forty-three patients (67%) were involved in more than 3 systems simultaneously, including skin mucosa 60 cases (94%), blood system 52 cases (89%), circulatory system 54 cases (84%), digestive system 48 cases (75%), and nervous system 24 cases (37%). Common mucocutaneous lesions included rash 54 cases (84%) and conjunctival congestion and (or) lip flushing 45 cases (70%). Hematological abnormalities consisted of coagulation dysfunction 48 cases (75%), thrombocytopenia 9 cases (14%), and lymphopenia 8 cases (13%). Cardiovascular lesions mainly affected cardiac function, of which 11 patients (17%) were accompanied by hypotension or shock, and 7 patients (12%) had coronary artery dilatation.Thirty-six patients (56%) had gastrointestinal symptoms, 23 patients (36%) had neurological symptoms. Forty-five patients (70%) received the initial treatment of intravenous immunoglobulin in combination with glucocorticoids, 5 patients (8%) received the methylprednisolone pulse therapy and 2 patients (3%) treated with biological agents, 7 patients with coronary artery dilation all returned to normal within 6 months. Conclusions: MIS-C patients are mainly characterized by fever, high inflammatory response, and multiple organ damage. The preferred initial treatment is intravenous immunoglobulin combined with glucocorticoids. All patients have a good prognosis.
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Affiliation(s)
- R H Weng
- Department of Rheumatology and Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - W Y Zhao
- Department of Internal Medicine, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin Key Laboratory of Birth Defects for Prevention and Treatment, Tianjin 300074, China
| | - T Y He
- Department of Rheumatology and Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - X L Li
- Department of Pediatrics, Boai Hospital of Zhongshan, Zhongshan 528400, China
| | - X Q Li
- Department of Rheumatology and Immunology, Xi'an Children's Hospital, Xi'an 710003, China
| | - D M Zhao
- Department of Rheumatology and Immunology, Urumqi Children's Hospital, Urumqi 830002, China
| | - Y K Han
- Department of Rheumatology and Immunology, Children's Hospital of Changchun, Changchun 130061, China
| | - P Zeng
- Department of Rheumatology and Immunology, Guangzhou Women and Children Medical Center, Guangzhou 510120, China
| | - X M Tang
- Department of Rheumatology and Immunology, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - X C Wu
- the Children's Medical Center, the Second Xiangya Hospital, Central South University, Changhai 410011, China
| | - L Liu
- Department of Internal Medicine, Tianjin Children's Hospital (Children's Hospital of Tianjin University), Tianjin Key Laboratory of Birth Defects for Prevention and Treatment, Tianjin 300074, China
| | - J Yang
- Department of Rheumatology and Immunology, Shenzhen Children's Hospital, Shenzhen 518038, China
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Pan HD, Zhang Y, Tang H, Yang JLX, Feng WW, Mu LJ, Yan DM, Shao J, Wang H, Gao XT, Zhu RK, Huang GW, Zhao DM, Luo Y, Lyu LQ, Sun J, Yang J, Yan SQ, Wang NR, Wang H. [Studies of the norm of Karitane Parenting Confidence Scale(KPCS)among parents of infants in urban areas of China]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:1209-1213. [PMID: 34706506 DOI: 10.3760/cma.j.cn112150-20210224-00180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To establish the norm of the Chinese version of Karitane Parenting Confidence Scale (KPCS) in urban areas of China. Methods: From August to December 2017, the parents of 2 216 children (<36 months old) were selected from 15 cities (Beijing, Lianyungang, Hangzhou, Chengdu, Xi'an, Guangzhou, Changsha, Jinan, Guiyang, Ningbo, Dalian, Qinhuangdao, Maanshan, Chongqing and Wuhan) in 14 provinces by stratified random sampling. The general demographic characteristics and parents' parenting confidence were collected by a self-made questionnaire and KPCS Chinese version. The percentile norm was established. P3, P10 and P25 were used as the criteria to define the degree of lack of parenting confidence. Results: The age of mothers was (30.67±4.29). The age of the father was (32.50±4.99) years old. There were 726 (32.76%), 759 (34.25%) and 731 (32.99%) infants in 6-12, 12-23 and 24-35 months old groups. The total scores of P50, P25, P10 and P3 of KPCS (Chinese version) of infant parents in urban areas in China were 41, 38, 33, and 29 respectively. When the scores of parents were 34-37, 30-33, and ≤ 29, they were judged as mild, moderate, and severe lack of parenting confidence. There was no significant difference in the Chinese version of KPCS between parents of different age groups and parents of different gender (χ²=3.53, P=0.171; χ²=1.41, P=0.236). Each factor score≤P3 is defined as the boundary score, and the corresponding boundary scores of "parenting" "support" and "competence" were 13, 9, and 5 respectively. Conclusion: The Chinese version of KPCS can be used to assess the parenting confidence of infants in urban areas of China. It can used as one of the bases for scientific and objective evaluation of the parenting status of families.
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Affiliation(s)
- H D Pan
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - Y Zhang
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - H Tang
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - J L X Yang
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - W W Feng
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - L J Mu
- Early Childhood Integrated Development Service Center,Fangshan District Maternal and Child Health Hospital, Beijing 102488, China
| | - D M Yan
- Child Growth & Development,Lianyungang Maternal and Child Health Hospital, Lianyungang 222000, China
| | - J Shao
- Children's Health Care Department, The Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - H Wang
- Children's Health Care Department, Sichuan Province Maternal and Child Health Hospital, Chengdu 610031, China
| | - X T Gao
- Children's Health Care Department, Northwest Women and Children's Hospital, Xi'an 710061, China
| | - R K Zhu
- Children's Health Care Department, Guangdong Province Maternal and Child Health Hospital, Guangzhou 510010, China
| | - G W Huang
- Children's Health Care Department, Hunan Province Maternal and Child Health Hospital, Changsha 410008, China
| | - D M Zhao
- Children's Health Care Department, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - Y Luo
- Children's Health Care Department, Guiyang Maternal and Child Health Hospital, Guiyang 550003, China
| | - L Q Lyu
- Children's Health Care Department, Ningbo Women and Children's Hospital, Ningbo 315000, China
| | - J Sun
- Children's Health Care Department, Dalian Maternal and Child Health Hospital, Dalian 116033, China
| | - J Yang
- Children's Health Care Department, Qinhuangdao Maternal and Child Health Hospital, Qinhuangdao 066001, China
| | - S Q Yan
- Children's Health Care Department, Maanshan Maternal and Child Health Hospital, Maanshan 243011, China
| | - N R Wang
- Children's Health Care Department, Chongqing Maternal and Child Health Hospital, Chongqing 400013, China
| | - H Wang
- Children's Health Care Department, Hubei Province Maternal and Child Health Hospital, Wuhan 430070, China
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Wang P, Guo Z, Zhao DM, Xu HF, Jia MM, Ren LY, Chen PP, Sun XY, Li MJ, Sun XB, Qiao YL, Zhang SK. [Performance of high-risk HPV typing test in early diagnosis of cervical cancer]. Zhonghua Yi Xue Za Zhi 2020; 100:1396-1400. [PMID: 32392990 DOI: 10.3760/cma.j.cn112137-20191024-02313] [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 evaluate the performance of High-risk HPV typing detection in cervical cancer screening. Methods: A total of 3 231 women were recruited as the subjects of cervical cancer screening from Jiyuan city of Henan provinces from June to July 2017. All women underwent HPV DNA test. The women with cytological examination ≥ASCUS or cytological examination negative and HPV 16/18 positive underwent colposcopy biopsy and pathological examination. Pathological diagnosis was used as the gold standard. Sensitivity, specificity, positive predictive value (PPV), negative predictive value(NPV) as well as corresponding 95% confidence interval (CI) of HR-HPV and HPV 16/18 were calculated. Results: The mean age of 3 231 subjects selected in this study was 46.84±10.00 (21-64) years old. 524 subjects had the positive results of HR-HPV, including 91 of HPV16 and 15 of HPV18. Pathological test result CIN2+ was the gold standard. The sensitivity and specificity of HR-HPV for cervical precancer lesions screening were 93.75 (95%CI: 79.85-98.27) and 84.56% (95%CI: 83.26-85.77), respectively. To compared with HR-HPV, HPV16/18 had low sensitivity (65.63%, 95%CI: 48.31-79.59)and higher specificity (97.44%, 95%CI: 96.83-97.93). After age stratification by age 30 and 45, the sensitivity of HPV 16/18 was same with HR-HPV (100%, 95%CI: 34.24-100.00), the specificity of HPV 16/18 was higher than HR-HPV (98.71%, 95%CI: 96.27-99.56 vs 84.48%, 95%CI: 79.27-88.58) in<30 age group.The sensitivity of HR-HPVin 30-45 and ≥45 age group were higher than HPV16/18 (85.71%, 95%CI: 48.69-97.43 vs 71.43%, 95%CI: 35.89-91.78, 95.65%, 95%CI: 79.01-99.23 vs 60.87%, 95%CI: 40.79-77.84), but the specificity werelower than HPV16/18 (86.89%, 95%CI: 84.58-88.90 vs 98.51%, 95%CI: 97.51-99.11、83.49%, 95%CI: 81.81-85.04 vs 96.80%, 95%CI: 95.94-97.48). Conclusions: HR-HPV detection has relatively high sensitivity and specificity in cervical cancer screening. For >30 years old women, HR-HPV is more recommended in cervical cancer screening. Therefore, HR-HPV detection is an effective method for cervical cancer screening.
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Affiliation(s)
- P Wang
- Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - Z Guo
- Central Laboratory, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - D M Zhao
- Department of Pathology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - H F Xu
- Department of Cancer Epidemiology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - M M Jia
- Department of Gynecological Oncology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - L Y Ren
- Department of Pathology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - P P Chen
- Department of Cancer Epidemiology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - X Y Sun
- Department of Cancer Epidemiology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - M J Li
- Department of Cancer Epidemiology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - X B Sun
- Department of Cancer Epidemiology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
| | - Y L Qiao
- Department of Cancer Epidemiology, National Cancer Center, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S K Zhang
- Department of Cancer Epidemiology, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou 450008, China
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Jia MM, Zhao DM, Guo Z, Wu ZN, Chen PP, Guo PP, Sun XY, Zhang SK. [Evaluation the triage performance of p16/Ki-67 dual staining for HR-HPV positive women]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:192-197. [PMID: 32074709 DOI: 10.3760/cma.j.issn.0253-9624.2020.02.015] [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: This study aimed to evaluate the clinical performance of p16/Ki-67 dual staining for triage high risk HPV (HR-HPV) infected women. Method: Target objects were women who infected HR-HPV and received colposcopy examination between April and December of 2016 at the Second Affiliated Hospital of Zhengzhou University. Gynecologists collected the cervical exfoliated cells from eligible women for p16/Ki-67 dual staining, LBC testing and HPV DNA testing. Histology diagnosis were used as gold standard. Sensitivities, specificities, positive predictive values (PPVs), negative predictive values (NPVs) of p16/Ki-67 dual staining, LBC testing and HPV16/18 testing for triage of HR-HPV positive population were calculated and compared. Results: A total of 295 HR-HPV infected women were selected, and the mean age was (44.29±11.48) years old. Positive rates of p16/Ki-67 dual staining, HPV16/18 testing and LBC testing were 70.17% (207), 56.95% (168) and 85.76% (253), respectively. When CIN2+as the endpoint, among the three triage methods, sensitivity of p16/Ki-67 dual staining was 90.00% (95%CI: 85.06%-93.43%), higher than the value of HPV 16/18 testing, but lower than the value of LBC testing. Specificity, PPV and NPV of p16/Ki-67 dual staining were the highest [71.58% (95%CI: 61.81%-79.67%), 86.96% (95%CI:81.69%-90.88%) and 77.27% (95%CI: 67.49%-84.78%)]. When detection for CIN3+, sensitivity of p16/Ki-67 dual staining was 92.90% (95%CI: 87.74%-95.99%), lower than the value of LBC testing, but higher than the value of HPV16/18 testing. Specificity of p16/Ki-67 dual staining was 55.00% (95%CI: 46.74%-63.00%), lower than the value of HPV16/18 testing, but higher than the value of LBC testing. PPV of p16/Ki-67 dual staining was 69.57% (95%CI: 62.99%-75.43%), lower than the value of HPV 16/18 testing, but higher than the value of LBC testing. NPV of p16/Ki-67 dual staining was 87.50% (95%CI: 78.99%-92.87%), higher than value of HPV 16/18 testing, but lower than the value of LBC testing. Conclusion: p16/Ki-67 dual staining has better clinical effects than HPV 16/18 testing and LBC testing for triage women with HR-HPV infection.
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Affiliation(s)
- M M Jia
- Department of Gynecological Oncology, Henan Cancer Hospital, Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450008, China
| | - D M Zhao
- Department of Pathology, Henan Cancer Hospital/Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450008, China
| | - Z Guo
- Central Laboratory, Henan Cancer Hospital/Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450008, China
| | - Z N Wu
- Department of Cancer Epidemiology, National Cancer Center, Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - P P Chen
- Department of Cancer Epidemiology, Henan Cancer Hospital/Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450008, China
| | - P P Guo
- Department of Reproductive Medicine, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
| | - X Y Sun
- Department of Cancer Epidemiology, Henan Cancer Hospital/Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450008, China
| | - S K Zhang
- Department of Cancer Epidemiology, Henan Cancer Hospital/Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450008, China
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Yang JLX, Zhang Y, Feng WW, Tang H, Shao J, Wang NR, Wang H, Sun J, Luo Y, Lyu LQ, Yan SQ, Zhao DM, Mu LJ, Yan DM, Wang H, Gao XT, He MF, Yang J, Fu M, Sanders M, Haslam D. [Practice of parenting and related factors on children aged 0-5 in the urban areas of China]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:422-426. [PMID: 31006202 DOI: 10.3760/cma.j.issn.0254-6450.2019.04.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Objective: To characterize the relations between the practice of parenting and associated factors on children (0-5 years old) in urban areas of China, in order to provide evidence for promoting the early development of children and to provide positive guidance and service programs on parenting. Methods: A total of 4 515 parents from 15 cities (14 provinces) were surveyed with a self-administered questionnaire. Parenting and Family Adjustment Scales (PAFAS) was used, including parameters as: consistency and coercive parenting, positive encouragement, parent-child relationship and parental emotion adjustment, family relationship and parental teamwork aspects, etc. Both single factor analysis and multiple linear regression were used to examine the associations between parenting practice, individual, parental and family factors. Results: The mean score of PAFAS was 21.00 (15.00-28.00), associated with factors as children's age, only-child family, premature delivery, father's education level, confidence on parenting, problems regarding the parental mood, annual family income, family structure and behavior on seeking professional help, etc. Results showed that there were big differences on the practice of parenting in China and influenced by variety of factors. Conclusions: The general situation of parenting was well, in the urban areas of China. The practice of parenting was associated with a series of individual, parental and family factors. Programs on improving the parenting skills and promoting the early development of children, should be highlighted.
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Affiliation(s)
- J L X Yang
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - Y Zhang
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - W W Feng
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - H Tang
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - J Shao
- Zhejiang University School of Medicine Affiliated Children's Hospital, Hangzhou 310003, China
| | - N R Wang
- Chongqing Maternal and Child Health Hospital, Chongqing 400013, China
| | - H Wang
- Maternal and Child Health Hospital of Sichuan Province, Chengdu 610031, China
| | - J Sun
- Dalian Maternal and Child Health Hospital of Liaoning Province, Dalian 116033, China
| | - Y Luo
- Guiyang Maternal and Child Health Hospital, Guiyang 550003, China
| | - L Q Lyu
- Ningbo Women and Children's Hospital of Zhejiang Province, Ningbo 315000, China
| | - S Q Yan
- Ma'anshan Maternal and Child Health Hospital of Anhui Province, Ma'anshan 243011, China
| | - D M Zhao
- Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - L J Mu
- Fangshan District Maternal and Child Health Hospital of Beijing, Beijing 102488, China
| | - D M Yan
- Lianyungang Maternal and Child Health Hospital of Jiangsu Province, Lianyungang 222000, China
| | - H Wang
- Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, China
| | - X T Gao
- Northwest Women and Children's Hospital, Xi'an710061, China
| | - M F He
- Maternal and Child Health Hospital Hunan Province, Changsha 410008, China
| | - J Yang
- Qinhuangdao Maternal and Child Health Hospital of Hebei Province, Qinhuangdao 066001, China
| | - M Fu
- Maternal and Child Health Hospital of Guangdong Province, Guangzhou 510010, China
| | - M Sanders
- The University of Queensland, Australia, Queensland 4072, Australia
| | - D Haslam
- The University of Queensland, Australia, Queensland 4072, Australia
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Chi BJ, Zhao DM, Liu L, Yin XZ, Wang FF, Bi S, Gui SL, Zhou SB, Qin WB, Wu DM, Wang SQ. Downregulation of hsa_circ_0000285 serves as a prognostic biomarker for bladder cancer and is involved in cisplatin resistance. Neoplasma 2018; 66:197-202. [PMID: 30509102 DOI: 10.4149/neo_2018_180318n185] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 07/16/2018] [Indexed: 11/08/2022]
Abstract
Bladder cancer remains a very challenging disease to treat with the high rates of recurrence and progression associated with current therapies. Although the association between bladder cancer pathology and circRNAs remains undetermined, circRNAs signatures may be useful as prognostic and predictive factors and clinical tools for assessing disease state, treatment response and outcome. This study investigates if these circRNAs can be used as biomarkers for bladder cancer diagnosis and predicting treatment response. Herein, qPCR measured the expression of hsa_circRNA_100783, hsa_circ_0000285 and hsa_circRNA_100782 in bladder cancer tissues. It was established that sa_circ_0000285, but not hsa_circRNA_100782 and hsa_circRNA_10078, are significantly reduced in bladder cancer tissues and serum compared to adjacent tissues and healthy controls. Moreover, hsa_circ_0000285 expression was lower in cisplatin-resistant bladder cancer patients than in those who were cisplatin-sensitive. Here, hsa_circ_0000285 was associated with tumor size (p<0.001), differentiation (p<0.001), lymph node metastasis (p=0.038), distant metastasis (p=0.004) and TNM stage (p=0.013). Further analysis showed that hsa_circ_0000285 would be an independent prognostic factor for bladder cancer patient outcome. In conclusion, our study indicates hsa_circ_0000285 may be a novel biomarker for bladder cancer because of its involvement in bladder cancer chemo-sensitivity.
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Affiliation(s)
- B J Chi
- Department of Urology, The First Affiliated Hospital of Jiamusi University, Jiamusi, China.,Basic Medical College, Jiamusi University, Jiamusi, China
| | - D M Zhao
- Department of Urology, The First Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - L Liu
- Basic Medical College, Jiamusi University, Jiamusi, China
| | - X Z Yin
- Basic Medical College, Jiamusi University, Jiamusi, China
| | - F F Wang
- Basic Medical College, Jiamusi University, Jiamusi, China
| | - S Bi
- Department of Urology, The First Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - S L Gui
- Department of Urology, The First Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - S B Zhou
- Basic Medical College, Jiamusi University, Jiamusi, China.,School of Life Sciences, Institute of Biomedical and Environmental Science and Technology, University of Bedfordshire, Luton, United Kingdom
| | - W B Qin
- Department of Urology, The Second Affiliated Hospital of Jiamusi University, Jiamusi University, Jiamusi, China
| | - D M Wu
- Material College, Jiamusi University, Jiamusi, China
| | - S Q Wang
- Basic Medical College, Jiamusi University, Jiamusi, China
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Ding RY, Qiu JN, Liu BY, Li XX, Sun YN, Liang YJ, Zhao DM, Zhu R, Zhang ZD, Ma XC. [A retrospective clinical study of sixty-three cases with persistent inflammation immunosuppression and catabolism syndrome]. Zhonghua Nei Ke Za Zhi 2017; 55:941-944. [PMID: 27916049 DOI: 10.3760/cma.j.issn.0578-1426.2016.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the clinical characteristics and prognosis of patients with persistent inflammation immunosuppression and catabolism syndrome (PICS) in ICU. Methods: A total of 126 patients admitted to ICU (ICU stay of more than 10 days, age≥18 years) between January 2014 to December 2014 were retrospectively studied.Data were collected from electronic medical records including demographics, underlying disease, Acute Physiology and Chronic Health Evaluation Ⅱ (APACHEⅡ) score, Sequential Organ Failure Assessment (SOFA) score, laboratory parameters, ICU acquired infections and clinical outcome. Results: The overall incidence of PICS in ICU patients (ICU stay of more than 10 days) was 50.0%(63/126). There were no significant differences in baseline data such as gender, age, APACHEⅡscore, SOFA score and underlying diseases between the two groups(all P>0.05). Compared with the non-PICS group, there were more patients with gastrointestinal perforation in the PICS group (P=0.042), however, the medical or surgical admission did not differ between the two groups(P>0.05). During the stay in ICU, the PICS group showed a higher risk of developing acquired infections compared with the non-PICS group[PICS 63.5%(40/63) vs non-PICS 23.8%(15/63); P<0.001]. The infections were more caused by Candida in the PICS group than the non-PICS group [PICS 22.4%(11/49) vs non-PICS 2/17; P=0.003]. Moreover, the PICS group experienced longer stay in ICU[PICS(31.6±28.8) days vs non-PICS (20.4±11.3) days; P=0.0046] and higher ICU mortality [PICS 28.6%(18/63) vs non-PICS 6.3%(4/63), P=0.001]. Conclusion: PICS is a common manifestation of patients who stay in ICU more than 10 days, which is associated with high risk of ICU acquired infections, prolonged length of stay and high mortality.
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Affiliation(s)
- R Y Ding
- Department of Intensive Care Unit, the First Hospital of China Medical University, Shenyang 110001, China
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Hu LX, Yang ZH, Zhang D, Zhao DM, Zhu JH. Sensitive and rapid detection of Pectobacterium atrosepticum by targeting the gyrB gene using a real-time loop-mediated isothermal amplification assay. Lett Appl Microbiol 2017; 63:289-96. [PMID: 27450435 DOI: 10.1111/lam.12618] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Revised: 07/15/2016] [Accepted: 07/18/2016] [Indexed: 11/29/2022]
Abstract
UNLABELLED This study reports the development of a real-time, loop-mediated isothermal amplification (RealAmp) assay for the detection of Pectobacterium atrosepticum (P. atrosepticum). A phylogenetic tree was constructed based on the gyrB gene of P. atrosepticum and related species. Pectobacterium atrosepticum from different sources can be clustered in the same branch with 100% support rate. The RealAmp primers targeting the gyrB gene of P. atrosepticum worked most efficiently at 61·0°C. Compared with 55 related bacterial strains, the eight P. atrosepticum strains displayed positive reaction in the RealAmp assay. The melting temperature (Tm) of P. atrosepticum amplified products was about 85·0°C. The detection limit of the RealAmp assay for the detection of P. atrosepticum in pure culture was approx. 3 CFU reaction(-1) . The detection limit of the RealAmp assay for the detection of P. atrosepticum in artificially contaminated samples was 22 CFU reaction(-1) . The detection rate of the RealAmp assay for the detection of potato tubers was 28·5-32·0% higher than that of the conventional PCR. In summary, a specific, sensitive and rapid RealAmp assay based on the gyrB gene of P. atrosepticum, which can be easily performed and real-time monitored, was established. SIGNIFICANCE AND IMPACT OF THE STUDY Potato blackleg caused by Pectobacterium atrosepticum (P. atrosepticum) which is mainly transmitted through the seed potato leads to the decline in potato production. To reduce yield loss, rapid detection of P. atrosepticum in seed potato remains essential. Based on the gyrB gene of P. atrosepticum, species-specific primers were designed. A real-time, loop-mediated isothermal amplification (RealAmp) assay was established for the detection of P. atrosepticum. The RealAmp assay is a specific, rapid and sensitive method for P. atrosepticum detection. Therefore, it provides an effective diagnosis of potato blackleg in both the growing and stored potato.
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Affiliation(s)
- L X Hu
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - Z H Yang
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - D Zhang
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - D M Zhao
- College of Plant Protection, Agricultural University of Hebei, Baoding, China
| | - J H Zhu
- College of Plant Protection, Agricultural University of Hebei, Baoding, China.
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Ding RY, Zhao DM, Li X. [A case report of sulfasalazine-induced severe neutropenia complicated with perianal abscess and septic shock]. Zhonghua Nei Ke Za Zhi 2016; 55:798-800. [PMID: 27686444 DOI: 10.3760/cma.j.issn.0578-1426.2016.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Abstract
miRNA-203 is involved in the development and progression of various types of cancer. However, its role in cervical cancer remains unclear. The aim of this study was to investigate the effect of miRNA-203 on the proliferation and migration of HeLa cervical cancer cells, as well as survivin expression in these cells. A miRNA-203 primer probe was designed according to a sequence obtained from NCBI. The expression of miRNA-203 in cervical epithelial cells and cervical cancer cells was detected by quantitative reverse transcriptase-polymerase chain reaction. The miRNA-203 expression pattern was compared between these two cell lines. The cervical cancer cells were transfected with miRNA-203 mimic or inhibitor to determine their effects on proliferation and migration. The expression of the miRNA-203 target protein (survivin) was analyzed by western blot. Cervical cancer cells showed reduced miRNA-203 expression compared to cervical epithelial cells. Transfection of miRNA-203 mimic upregulated the expression of miRNA-203, suppressed cell proliferation and migration, and downregulated survivin expression (P < 0.05). However, downregulation of miRNA-203 expression did not affect proliferation, migration, and survivin expression in cervical cancer cells (P > 0.05). In conclusion, upregulation of miRNA-203 in cervical cancer cells inhibits the proliferative and migratory capacities of these cells by downregulating the expression of survivin.
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Affiliation(s)
- X Z Yin
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China.,College of Basic Medical Sciences, Jamusi University, Jamusi, China
| | - D M Zhao
- The First Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - G X Zhang
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, China
| | - L Liu
- College of Basic Medical Sciences, Jamusi University, Jamusi, China
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12
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Liu W, Zhao DG, Jiang DS, Chen P, Liu ZS, Zhu JJ, Shi M, Zhao DM, Li X, Liu JP, Zhang SM, Wang H, Yang H, Zhang YT, Du GT. Temperature dependence of photoluminescence spectra for green light emission from InGaN/GaN multiple wells. Opt Express 2015; 23:15935-15943. [PMID: 26193570 DOI: 10.1364/oe.23.015935] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Three green light emitting InGaN/GaN multiple quantum well (MQW) structures with different In composition grown by metal-organic chemical vapor deposition are investigated by the X-ray diffraction and the temperature-dependent photoluminescence (PL) measurements. It is found that when the In composition increases in the InGaN/GaN MQWs, the PL spectral bandwidth may anomalously decrease with increasing temperature. The reduction of PL spectral bandwidth may be ascribed to the enhanced non-radiative recombination process which may lower the light emission efficiency of the localized luminescent centers with shallow localization energy in the high-In-content InGaN quantum wells and also cause a reduction of integrated PL intensity.
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Liao Q, Li NN, Mao XY, Chang XL, Zhao DM, Zhang JH, Yu WJ, Tan EK, Peng R. MTHFR C677T variant reduces risk of sporadic Parkinson's disease in ethnic Chinese. Acta Neurol Scand 2014; 130:e30-4. [PMID: 24628244 DOI: 10.1111/ane.12245] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/11/2014] [Indexed: 02/05/2023]
Abstract
BACKGROUND Genetic variability of methylenetetrahydrofolate reductase (MTHFR) may be associated with Parkinson's disease (PD). Its role in ethnic Chinese population is still unclear. Our study aimed to investigate whether MTHFR C677T variation was linked to PD risk in a Han Chinese population from mainland China. METHODS To investigate the association with the risk of PD, we analyzed the single-nucleotide polymorphism C677T in MTHFR gene using a case-control methodology. A total of 1482 subjects included 765 patients with idiopathic PD, and 717 age- and sex-matched controls were recruited in this study. RESULTS The T allele of MTHFR C677T was associated with a decreased risk of PD (OR = 0.80, 95% CI: 0.688-0.926, P = 0.003). Patients with CT + TT genotypes have a decreased risk of PD compared with those with CC genotypes (OR = 0.66, 95%CI: 0.532-0.813, P = 0.000). CT + TT subjects cannot be differentiated from CC subjects based on their clinical features. CONCLUSION We showed that the C677T polymorphism in MTHFR gene was associated with decreased PD susceptibility in a Han Chinese population from mainland China. Efforts to fully elucidate the pathophysiologic role of the variant in PD should be necessary.
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Affiliation(s)
- Q. Liao
- Department of Neurology; West China Hospital; Sichuan University; Chengdu Sichuan Province China
| | - N. N. Li
- Department of Neurology; West China Hospital; Sichuan University; Chengdu Sichuan Province China
| | - X. Y. Mao
- Department of Neurology; West China Hospital; Sichuan University; Chengdu Sichuan Province China
| | - X. L. Chang
- Department of Neurology; West China Hospital; Sichuan University; Chengdu Sichuan Province China
| | - D. M. Zhao
- Department of Neurology; West China Hospital; Sichuan University; Chengdu Sichuan Province China
| | - J. H. Zhang
- Department of Internal Medicine; Wangjiang Hospital; Sichuan University; Chengdu Sichuan Province China
| | - W. J. Yu
- Department of Neurology; West China Hospital; Sichuan University; Chengdu Sichuan Province China
| | - E. K. Tan
- Duke-NUS Graduate Medical School; Singapore Singapore
- Department of Neurology; Singapore General Hospital; National Neuroscience Institute; Singapore Singapore
| | - R. Peng
- Department of Neurology; West China Hospital; Sichuan University; Chengdu Sichuan Province China
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Ayala SM, Hasan DB, Celestino CA, Escobar GI, Zhao DM, Lucero NE. Validation of a simple universal IELISA for the diagnosis of human brucellosis. Eur J Clin Microbiol Infect Dis 2014; 33:1239-46. [PMID: 24515098 DOI: 10.1007/s10096-014-2066-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Accepted: 01/20/2014] [Indexed: 10/25/2022]
Abstract
The definitive diagnosis of brucellosis requires isolation of the agent, although negative isolation does not rule out the infection. In contrast, serological testing is more sensitive and, therefore, preferred in clinical practice. The majority of reported cases around the world were caused by Brucella melitensis, B. abortus, B. suis and B. canis. The first three species contain O-polysaccharide (OPS) on the cell surface, but B. canis contains no measurable OPS on the rough lipopolysaccharide (R-LPS). A universal indirect enzyme immunoassay for the detection of serum antibody to smooth and rough Brucella spp. in both normal (u-IELISA®) and rapid forms (R-u-IELISA®) has been developed, and, therefore, the potential use of this method was assessed in comparison to cELISA, conventional tests, IELISA and RSAT on a total of 478 sera. The 77 sera from blood donors with no clinical or epidemiological evidence of brucellosis and negative serological tests showed a specificity of 100 % for both u-IELISA® and R-u-IELISA®, with a cut-off value of %P 24 and %P 18, respectively. Sera from 49 culture-positive cases (16 B. suis, 15 B. abortus, 12 B. melitensis and 6 B. canis) yielded a sensitivity of 98 % for u-IELISA® and 95.9 % for R-u-IELISA®. In general, u-IELISA® showed good correlation with cELISA and IELISA for the detection of antibodies to smooth and rough Brucella strains, as well as for monitoring patients during treatment, but R-u-IELISA® seems to need additional optimisation. u-IELISA® is simple to perform and could be a suitable test for field laboratories and hospitals lacking skilled personnel.
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Affiliation(s)
- S M Ayala
- Brucellosis Service, National Laboratories and Institutes of Health Administration (ANLIS) "Dr. C. G. Malbrán", Avda. Velez Sarsfield 563, 1281, Buenos Aires, Argentina
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Li NN, Tan EK, Chang XL, Mao XY, Zhao DM, Zhang JH, Liao Q, Peng R. MCCC1/LAMP3 reduces risk of sporadic Parkinson's disease in Han Chinese. Acta Neurol Scand 2013; 128:136-9. [PMID: 23496138 DOI: 10.1111/ane.12108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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] [Accepted: 01/11/2013] [Indexed: 02/05/2023]
Abstract
BACKGROUND A recent large-scale replication and heterogeneity study reported the new described GWAS locus (MCCC1/LAMP3 rs11711441) was associated with a reduced risk of Parkinson disease (PD) in Asian and Caucasian populations. Its role is still unknown in a Han Chinese population from mainland China. We genotyped the rs11711441 variant to investigate the association with risk of PD. METHODS Using a case-control methodology, a total of 1428 Han Chinese study subjects were genotyped. We also conducted further stratified analysis according to age at onset and compared the clinical characteristics of GA + AA subjects with GG subjects. RESULTS In this study, we confirmed that the A allele of MCCC1/LAMP3 (rs11711441) polymorphism reduces the risk to develop sporadic PD (P = 0.043). Additionally, subjects with GA + AA genotypes have a reduced risk compared to those with GG genotype (P = 0.022). The association was seen among the older age group (P = 0.014), but was not significant among the younger age group (P = 0.641). No significant differences were observed in gender, age at onset, and onset symptoms between GA + AA subjects and GG subjects. CONCLUSION Our study, the first from Mainland China demonstrates that MCCC1/LAMP3 (rs11711441) is associated with a lower risk of PD. Further studies in additional Chinese populations and other cohorts will be useful.
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Affiliation(s)
- N N Li
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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16
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Zhang JE, Sun B, Pang WY, Qiao JW, Kouadir M, Yang LF, Zhao DM. Polymorphisms of theprion proteingene (PRNP) in the Tibetan Mastiff. Anim Genet 2009; 40:1001-2. [DOI: 10.1111/j.1365-2052.2009.01935.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Zhao DM, Wang YX, Chen ZY, Xu RW, Wu G, Yu DS. Preparation and characterization of modified hydroxyapatite particles by heparin. Biomed Mater 2008; 3:025016. [DOI: 10.1088/1748-6041/3/2/025016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Zhou XM, Xu GX, Zhao DM. In vitro effect of prion peptide PrP 106–126 on mouse macrophages: Possible role of macrophages in transport and proliferation for prion protein. Microb Pathog 2008; 44:129-34. [PMID: 17904794 DOI: 10.1016/j.micpath.2007.08.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Accepted: 08/06/2007] [Indexed: 11/20/2022]
Abstract
While there is a growing consensus on the understanding that the immune system plays an important role in facilitating the spread of prion infections from the periphery to the central nervous system, little is known about the key players in the first steps of the infection and about the sites of the disease development. Owing to their subepithelial location and their migratory capacity, macrophages could be early targets for prion transportation or propagation during the later stages of disease. In order to investigate the role of macrophages, we studied in vitro the effect of exposing primary peritoneal macrophages to a synthetic peptide homologous to residues 106-126 of the human prion protein (PrP), PrP 106-126. As shown by MTT assay, macrophage viability treated with less than 50 microM PrP 106-126 for 72 h was not inhibited but slightly stimulated at 10 and 25 microM, while there was significant decrease when exposed to 100 microM PrP 106-126 for 72 h. The expressions of PrP at mRNA and protein level were up-regulated following treatment with PrP 106-126 for 72 h. Cytokine TNF-alpha production were elevated by the PrP peptide in a time-dependent manner, which demonstrated a proinflammatory response linked to the presence and progression of prion disease took place in macrophages. These findings suggested that macrophages may play roles in the transportation and replication of the infectious agent.
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Affiliation(s)
- X M Zhou
- Animal Transmissible Spongiform Encephalopathies Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, PR China
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19
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Meng LP, Zhao DM, Liu HX, Yang JM, Ning ZY, Wu CD, Han CX. Polymorphisms of the prion protein gene (PRNP) in Chinese domestic sika deer (Cervus nippon hortulorum). Anim Genet 2005; 36:266-7. [PMID: 15932416 DOI: 10.1111/j.1365-2052.2005.01276.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- L P Meng
- National Animal Transmissible Spongiform Encephalopathies Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing 100094, China
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Zhou XM, Ma YH, Guan WJ, Zhao DM. Establishment and Identification of a Debao Pony Ear Marginal Tissue Fibroblast Cell Line. Asian Australas J Anim Sci 2004. [DOI: 10.5713/ajas.2004.1338] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Zhao L, Zhao DM, Wei JH, Yan GD, Wang YQ, Huang ZM. [Comparison of effects of 5 and 20 Hz magnetic field on cerebral ischemia in rats]. Space Med Med Eng (Beijing) 2001; 14:41-4. [PMID: 11712555] [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: 04/17/2023]
Abstract
OBJECTIVE To compare the effects of 5 Hz and 20 Hz magnetic field on cerebral ischemia in rats. METHOD After cerebral ischemia was produced by ligation of the left general carotid artery, rats were stimulated by magnetic fields of 5 Hz and 20 Hz respectively and pathological changes in neurocytes were observed. RESULT (1) Different pathological changes were observed in different cells; (2) The extent of damage of pyramidal cells was milder in 5 Hz magnetic field groups than those in the control group, and the effect was not remarkable in the 20 Hz group; (3) The effect on astroglia was worse in 5 Hz group than that in control and 20 Hz group. CONCLUSION Magnetic field stimulation influences cerebral ischemic reaction with frequency-dependency.
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Affiliation(s)
- L Zhao
- Institute of Space Medico-Engineering, Beijing, China
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22
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Xue HH, Zhao DM, Suda T, Uchida C, Oda T, Chida K, Ichiyama A, Nakamura H. Store depletion by caffeine/ryanodine activates capacitative Ca(2+) entry in nonexcitable A549 cells. J Biochem 2000; 128:329-36. [PMID: 10920270 DOI: 10.1093/oxfordjournals.jbchem.a022757] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Capacitative Ca(2+) entry is essential for refilling intracellular Ca(2+) stores and is thought to be regulated primarily by inositol 1, 4,5-trisphosphate (IP(3))-sensitive stores in nonexcitable cells. In nonexcitable A549 cells, the application of caffeine or ryanodine induces Ca(2+) release in the absence of extracellular Ca(2+) similar to that induced by thapsigargin (Tg), and Ca(2+) entry occurs upon the readdition of extracellular Ca(2+). The channels thus activated are also permeable to Mn(2+). The channels responsible for this effect appear to be activated by the depletion of caffeine/ryanodine-sensitive stores per se, as evidenced by the activation even in the absence of increased intracellular Ca(2+) concentration. Tg pretreatment abrogates the response to caffeine/ryanodine, whereas Tg application subsequent to caffeine/ryanodine treatment induces further Ca(2+) release. The response to caffeine/ryanodine is also abolished by initial ATP application, whereas ATP added subsequent to caffeine/ryanodine induces additional Ca(2+) release. RT-PCR analyses showed the expression of a type 1 ryanodine receptor, two human homologues of transient receptor potential protein (hTrp1 and hTrp6), as well as all three types of the IP(3) receptor. These results suggest that in A549 cells, (i) capacitative Ca(2+) entry can also be regulated by caffeine/ryanodine-sensitive stores, and (ii) the RyR-gated stores interact functionally with those sensitive to IP(3), probably via Ca(2+)-induced Ca(2+) release.
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Affiliation(s)
- H H Xue
- First Department of Biochemistry, and Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Handa-cho, Hamamatsu, Shizuoka 431-3192, Japan.
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23
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Zhao DM, Xue HH, Chida K, Suda T, Oki Y, Kanai M, Uchida C, Ichiyama A, Nakamura H. Effect of erythromycin on ATP-induced intracellular calcium response in A549 cells. Am J Physiol Lung Cell Mol Physiol 2000; 278:L726-36. [PMID: 10749750 DOI: 10.1152/ajplung.2000.278.4.l726] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ATP induced a biphasic increase in the intracellular Ca(2+)concentration ([Ca(2+)](i)), an initial spike, and a subsequent plateau in A549 cells. Erythromycin (EM) suppressed the ATP-induced [Ca(2+)](i) spike but only in the presence of extracellular calcium (Ca(2+)(o)). It was ineffective against ATP- and UTP-induced inositol 1,4,5-trisphosphate [Ins(1,4,5)P(3)] formation and UTP-induced [Ca(2+)](i) spike, implying that EM perturbs Ca(2+) influx from the extracellular space rather than Ca(2+)release from intracellular Ca(2+) stores via the G protein-phospholipase C-Ins(1,4,5)P(3) pathway. A verapamil-sensitive, KCl-induced increase in [Ca(2+)](i) and the Ca(2+) influx activated by Ca(2+) store depletion were insensitive to EM. 3'-O-(4-benzoylbenzoyl)-ATP evoked an Ca(2+)(o)-dependent [Ca(2+)](i) response even in the presence of verapamil or the absence of extracellular Na(+), and this response was almost completely abolished by EM pretreatment. RT-PCR analyses revealed that P2X(4) as well as P2Y(2), P2Y(4), and P2Y(6) are coexpressed in this cell line. These results suggest that in A549 cells 1) the coexpressed P2X(4) and P2Y(2)/P2Y(4) subtypes contribute to the ATP-induced [Ca(2+)](i) spike and 2) EM selectively inhibits Ca(2+) influx through the P2X channel. This action of EM may underlie its clinical efficacy in the treatment of airway inflammation.
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MESH Headings
- 3-Pyridinecarboxylic acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, Methyl ester/pharmacology
- Adenosine Triphosphate/pharmacology
- Anti-Bacterial Agents/pharmacology
- Calcium/metabolism
- Calcium Channel Agonists/pharmacology
- Calcium Channel Blockers/pharmacology
- Erythromycin/pharmacology
- Estrenes/pharmacology
- Humans
- Inositol 1,4,5-Trisphosphate/metabolism
- Intracellular Membranes/drug effects
- Intracellular Membranes/metabolism
- Lung/metabolism
- Lung/pathology
- Nickel/pharmacology
- Potassium Chloride/pharmacology
- Protein Isoforms/metabolism
- Pyrrolidinones/pharmacology
- Receptors, Purinergic P2/drug effects
- Receptors, Purinergic P2/metabolism
- Receptors, Purinergic P2X2
- Tumor Cells, Cultured
- Uridine Triphosphate/pharmacology
- Verapamil/pharmacology
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Affiliation(s)
- D M Zhao
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan
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24
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Gao HT, Zhao DM, Qu WJ, Liu DY, Du AD. Os-Os dating of Mo-deposits at jinduicheng in Shaanxi Province by using negative thermal ionization mass spectrometry. Chin Sci Bull 1998. [DOI: 10.1007/bf02891430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Cloning of the canine yes oncogene was attempted from a cDNA library derived from a healthy canine spleen using a human c-yes-1 probe. The nucleotide and amino acid sequences revealed that the canine yes gene contained an open reading frame consisting of 539 amino acids. Its product had a molecular mass of 60,368 Daltons and showed 95.9 per cent and 90.4 per cent homology with human and chick p61c-yes, respectively. Moreover, the product had a myristylation signal, src homology region (SH) 3, SH2, and tyrosine kinase domains showing 98.8 per cent and 96.0 per cent homology with those of human beings and chickens, respectively. These findings indicate that the products of the canine yes gene may have non-receptor-type tyrosine kinase activity on the cell membrane, as is the case in human and chick p61c-yes.
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Affiliation(s)
- D M Zhao
- Department of Veterinary Pathology, Faculty of Agriculture, Miyazaki University, Japan
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Daniels S, Zhao DM, Inman N, Price DJ, Shelton CJ, Smith EB. Effects of general anesthetics and pressure on mammalian excitatory receptors expressed in Xenopus oocytes. Ann N Y Acad Sci 1991; 625:108-15. [PMID: 1676253 DOI: 10.1111/j.1749-6632.1991.tb33834.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The effects of general anesthetics and pressure on receptors from the mammalian central nervous system have been investigated using oocyte expression techniques. Poly A+ mRNA extracted from rat whole brain was injected into mature Xenopus oocytes producing depolarizing responses to the fast excitatory neurotransmitters NMDA and kainate and the inhibitory neurotransmitters GABA and glycine. An apparatus was constructed to allow agonist dose-response curves to be determined at high pressures using voltage-clamped oocytes. This was used to investigate the excitatory transmitter kainate. It was found that anesthetics depress the current induced by kainate whereas pressure does not appear to affect the responses associated with this transmitter. Furthermore it was found that pressure does not reverse (or modify in any way) the changes in response brought about by application of anesthetics.
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Affiliation(s)
- S Daniels
- Physical Chemistry Laboratory, Oxford, England
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Shi ZY, Zhao DM, Mei XH, Liu ZR, Shen TM. The influence of N2-O2 and He-O2 saturation diving on electroencephalogram of human bodies. Sci China B 1989; 32:1436-48. [PMID: 2574978] [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: 01/01/2023]
Abstract
This paper reports the changes of the EEG of human bodies during saturation exposure at different depths to different mixed gases. The results of the research show that the most obvious on EEG was the appearance of diffused slow waves, usually theta waves of 4-7 times/s, and delta waves of 2-3 times/s within individual subjects. The EEG changes at 50 m were more obvious than those at 36.5 m. With the prolonging of time under high pressure, the EEG had some improvements, for instance, the slow waves decreased and the alpha waves increased. There was a certain relationship between these changes and the symptoms which appeared in the human body. The chief factor of the EEG changes is due to the effect of nitrogen narcosis during the oxygen-nitrogen diving experiment. In addition, carbon dioxide retention under the high pressure is also a factor of the EEG changes, because repeated inhaling of CO2-dense mixtures could aggravate the EEG changes and the reduction of carbon dioxide in humans by hyperventilation could improve abnormal EEGs. The main changes of the EEG during the helium-oxygen exposure at 302 m were the increase of theta waves, and even of delta waves, the decrease in alpha rhythm and the decline of amplitude of alpha waves. Increased theta index and decreased alpha index could be seen at the depth of 302 m. Under any of the above-mentioned pressure conditions when slow waves characteristic of abnormal changes appeared in the EEGs, the EEGs could be temporarily improved by photic stimulation, i.e. slow waves disappeared and alpha waves reappeared. When photic stimulation was over, alpha waves disappeared and slow waves reappeared. It was indicated that abnormal changes of the EEG under high pressure were a kind of temporary and reversible changes of the brain function.
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Affiliation(s)
- Z Y Shi
- Chinese Underwater Technology Institute, Shanghai, PRC
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Shi ZY, Zhao DM, Mei XH, Liu ZR, Sheng TM. The influence of simulated saturation diving on electroencephalogram of human at different depths. Ann Physiol Anthropol 1987; 6:123-32. [PMID: 3675772] [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: 01/06/2023]
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Shi ZY, Zhao DM, Gu ZZ. The influence of acute and chronic hypoxia on the electroencephalogram of human body. Ann Physiol Anthropol 1987; 6:111-21. [PMID: 3675771] [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: 01/06/2023]
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Cao QK, Zhao DM. [A new method for repairing the pelvic floor during the operation for carcinoma of the rectum]. Zhonghua Wai Ke Za Zhi 1987; 25:98-9, 126. [PMID: 3622134] [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: 01/06/2023]
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Shi ZY, Zhao DM, Gu ZZ. The influence of acute and chronic hypoxia on the electroencephalogram of human body. Sci Sin B 1986; 29:1065-76. [PMID: 3576175] [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: 01/06/2023]
Abstract
This report deals with the study of electroencephalograms of 36 subjects who inhaled hypoxic mixture at the sea level (PO2 is as that at 7000 m above sea level) or in a hypobaric chamber with rapid decompression (as that at 5000-7500 m above sea level) and of 46 subjects who reached high altitude area (5000-8600 m) under chronic hypoxia. The characters of the EEGs at rest during photic stimulation, hyperventilation and convalescence after hypoxia were compared in two experiments. The result of experiments shows that in the same individual, the severer the hypoxia, the more obvious the changes on the EEGs. At the same altitude, acute hypoxia causes more obvious changes on the EEGs than chronic one does, but its speed of recovery is faster than that of chronic hypoxia. Under chronic hypoxia, the changes on the EEGs caused by hyperventilation are slighter than those under acute hypoxia. When photic stimulation is given, there is temporary appearance of alpha waves on the EEGs featuring slow waves under acute and chronic hypoxia. The possible mechanism of changes on the EEGs under acute and chronic hypoxia is also analyzed in this report.
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Shi ZY, Zhao DM, Li CM, Qian MS. Changes on electroencephalogram under acute hypoxia and relationship between tolerant ability to hypoxia and adaptation ability to high altitudes. Sci Sin B 1983; 26:58-69. [PMID: 6867681] [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: 01/22/2023]
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Shi ZY, Ning XH, Zhu SC, Zhao DM, Huang PG, Yang SY, Wang Y, Dong ZS. Electrocardiogram made on ascending the Mount Qomolangma from 50 m a. s. l. Sci Sin 1980; 23:1316-25. [PMID: 7433968] [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: 01/25/2023]
Abstract
In May 1975, one female mountaineer and eight male mountaineers of our country once more climbed onto the highest peak of the world Mount Qomolangma from the north slope. At the same time, we recorded 15 electrocardiograms while they were climbing from 7,600 m to the peak(8,848.13m) through radio-operated electrocardiography. In this report we mainly analyze the characteristics of electrocardiogram of six mountaineers who ascended the peak at the stage from 50 m a. s. l. to over 8,200m a. s. l. The result proves that although obvious changes after reaching an altitude above 8,200 m from the plain region should be those of indexes of heart rates, the QRS axis, Q-TR, Q-T/T-Q, P wave and T wave, there is no T wave diphasic, inverted, flat or abnormal shifting of S-T segment in the electrocardiogram of these outstanding mountaineers. This fully proves that those summit climbers are of excellent constitution and good adaptation ability to hypoxia. This also shows that the people who have been trained and acclimatized under hypoxia conditions (including permanent altitude residents and native lowlanders) can maintain normal physiological functions under ultra-anoxia for quite a long time.
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