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Gao T, Wang YF, Sun X, Zhang HR, Tian XC, Hei N, Yang XN, Zhou JX, Zhu L. CT quantification of pulmonary vessels in lung aging. Clin Radiol 2024; 79:e767-e774. [PMID: 38365539 DOI: 10.1016/j.crad.2024.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/19/2023] [Accepted: 01/08/2024] [Indexed: 02/18/2024]
Abstract
AIM To evaluate the effect of aging on pulmonary vessels based on computed tomography (CT) quantification and analyse the correlation between quantitative pulmonary vascular volume and pulmonary function during aging. MATERIALS AND METHODS A total of 330 healthy adult volunteers, including 161 men (53 aged 20-39 years, 61 aged 40-59 years, and 47 aged ≥60 years) and 169 women (53 aged 20-39 years, 63 aged 40-59 years, and 53 aged ≥60 years) were recruited in this study. AVIEW software was used to quantitatively measure pulmonary vascular volume, including pulmonary total blood vessel volume (TBV) and small blood vessel volume with a cross-sectional area of <5 mm2 (BV5). Pulmonary vascular volume parameters were standardised using the ratio of vascular volume to the body surface area (BSA; TBV/BSA and BV5/BSA). Subsequently, the effect of aging on the pulmonary vessels was analysed. RESULTS The pulmonary vascular volume parameters TBV/BSA and BV5/BSA of the whole lung, right lung, and left lung decreased significantly with increasing age (p<0.05). Additionally, TBV/BSA and BV5/BSA of the whole lung were higher in men than in women. The declining trend of pulmonary vascular volume was consistent in men and women and increased with age. CONCLUSIONS The pulmonary vascular volume parameters, TBV/BSA and BV5/BSA, decreased with age and were weakly positively correlated with pulmonary function.
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Affiliation(s)
- T Gao
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750004, China; The First Affiliated Hospital of Xi'an Medical University, Xi'an 710077, China
| | - Y F Wang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - X Sun
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - H R Zhang
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - X C Tian
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750004, China
| | - N Hei
- Department of Radiology, Xi'an Hospital of Traditional Chinese Medicine, Xi'an 710021, China
| | - X N Yang
- School of Ningxia Medical University, Yinchuan 750004, China
| | - J X Zhou
- School of Ningxia Medical University, Yinchuan 750004, China
| | - L Zhu
- Department of Radiology, General Hospital of Ningxia Medical University, Yinchuan 750004, China.
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Li YH, Liu L, Hu D, Zheng XY, Lyu J, Yu CQ, Pei P, Duan HP, Gao RQ, Pang ZC, Tian XC, Sun DJY. [Association between waist circumference and ischemic stroke: a prospective study in adults from Qingdao]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:178-184. [PMID: 38413054 DOI: 10.3760/cma.j.cn112338-20230911-00146] [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: 02/29/2024]
Abstract
Objective: To analyze the association between waist circumference (WC) and ischemic stroke (IS). Methods: The data for the present study were from the prospective cohort study of China Kadoorie Biobank in Qingdao. Using baseline information and IS events of the participants, the Cox proportional hazard regression model and restricted cubic spline (RCS) were used to analyze the association between WC and IS. Results: A total of 33 355 participants were included in the study, with 302 008.88 person-years of follow-up. A total of 1 093 new cases of IS were observed. Multivariate Cox proportional hazard regression model analysis showed that compared to the respondents with normal WC (male <85.0 cm, female <80.0 cm), respondents with excessive WC (male ≥85.0 cm, female ≥80.0 cm) had a 78% higher risk of IS incidence [hazard ratio(HR)=1.78, 95%CI: 1.51-2.10], and the risk increased by 72% (HR=1.72, 95%CI: 1.40-2.12) and 83% (HR=1.83, 95%CI: 1.40-2.39) in men and women. According to the RCS, the increase in WC and the risk of IS showed an "S" trend of nonlinear dose-response relationship. Conclusions: The risk of IS would increase with the WC. Keeping a normal WC is important for preventing IS.
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Affiliation(s)
- Y H Li
- Department of Epidemiology and Biostatistics, School of Public Health, Qingdao University, Qingdao 266071, China
| | - L Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Qingdao University, Qingdao 266071, China
| | - D Hu
- Licang District Center for Disease Control and Prevention of Qingdao, Qingdao 266041, China
| | - X Y Zheng
- Licang District Center for Disease Control and Prevention of Qingdao, Qingdao 266041, China
| | - J Lyu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - C Q Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - P Pei
- Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China
| | - H P Duan
- Qingdao Center for Disease Control and Prevention, Qingdao 266033, China Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - R Q Gao
- Qingdao Center for Disease Control and Prevention, Qingdao 266033, China Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - Z C Pang
- Qingdao Center for Disease Control and Prevention, Qingdao 266033, China Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - X C Tian
- Qingdao Center for Disease Control and Prevention, Qingdao 266033, China Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - D J Y Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
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Song JH, Pan C, Li FF, Xue XJ, Guo Y, Pei P, Tian XC, Wang RQ, Gao ZM, Pang LM, Chen Z, Li L. [Association between body mass index and coronary heart disease in Qingdao: a prospective study]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1357-1363. [PMID: 36117339 DOI: 10.3760/cma.j.cn112338-20211012-00789] [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: 06/15/2023]
Abstract
Objective: To analyze the association between body mass index (BMI) and coronary heart disease. Methods: The data for the present study were from the prospective cohort study of China Kadoorie Biobank (CKB) in Qingdao, a total of 33 355 participants aged 30-79 years were included in the study. Cox regression analyses were performed to evaluate the association between BMI and coronary heart disease. Results: During the follow-up for an average 9.2 years, a total of 2 712 cases of ischemic heart disease (IHD) and 420 cases of major coronary events (MCE) were found. Multivariate Cox regression analysis showed that, compared with participants with normal BMI, the participants who were overweight had a 41% and 87% higher risk of IHD and MCE, the adjusted HR were 1.41 (95%CI: 1.27-1.56) and 1.87 (95%CI: 1.43-2.44), respectively. The participants who were obesity had 91% and 143% higher risk of IHD and MCE, the adjusted HR were 1.91 (95%CI: 1.72-2.13) and 2.43 (95%CI: 1.82-3.24), respectively. Conclusion: Overweight and obesity might increase the risk for IHD and MCE.
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Affiliation(s)
- J H Song
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China
| | - C Pan
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China
| | - F F Li
- Department of Non-communicable Disease Control and Prevention, Qingdao Prefectural Center for Disease Control and Prevention, Qingdao 266033, China
| | - X J Xue
- Department of Non-communicable Disease Control and Prevention, Qingdao Prefectural Center for Disease Control and Prevention, Qingdao 266033, China
| | - Y Guo
- Chinese Academy of Medical Sciences, Beijing 100730, China
| | - P Pei
- Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X C Tian
- Department of Non-communicable Disease Control and Prevention, Qingdao Prefectural Center for Disease Control and Prevention, Qingdao 266033, China Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - R Q Wang
- Department of Non-communicable Disease Control and Prevention, Qingdao Prefectural Center for Disease Control and Prevention, Qingdao 266033, China
| | - Z M Gao
- Department of Nutrition and Food Hygiene, School of Public Health, Qingdao University, Qingdao 266071, China Qingdao Prefectural Center for Disease Control and Prevention, Qingdao 266033, China
| | - L M Pang
- Department of Non-communicable Disease Control and Prevention, Qingdao Prefectural Center for Disease Control and Prevention, Qingdao 266033, China
| | - Zhengming Chen
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
| | - Liming Li
- School of Public Health, Peking University, Beijng 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China
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Duan YJ, Yang SC, Han YT, Fan JN, Wang SJ, Wu XP, Yu M, Zhou JY, Tian XC, Xu XY, Liang MB, Hua YJ, Chen L, Yu CQ, Gao WJ, Cao WH, Lyu J, Li LM. [Association between perceived built environment attributes and adults' leisure-time physical activity in four cities of China]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1280-1285. [PMID: 32867436 DOI: 10.3760/cma.j.cn112338-20200227-00203] [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 explore the associations between perceived built environment attributes and adults' leisure-time physical activity in four cities of China. Methods: Multistage cluster random sampling method was used to select adults aged 25 to 64 in Hangzhou, Suzhou, Chengdu, and Qingdao. Data were collected from June 2017 to July 2018. The perception of the urban built environment was assessed by the neighborhood environment walkability scale-abbreviated (NEWS-A), and the physical activity was assessed by the International Physical Activity Questionnaire. Generalized linear mixed models were used to explore the relationship between the perceived built environment and leisure-time physical activities. Results: A total of 3 789 participants were included in the analysis. After adjusting for potential confounders, better access to public services (OR=1.34, 95%CI: 1.02-1.75) and higher aesthetic quality (OR=1.37, 95%CI: 1.09-1.73) were positively associated with the possibility of engaging in leisure-time physical activity in the past week. Similarly, these two attributes were positively associated with leisure-time walking. Higher scores on the perception of street connectivity were positively associated with leisure-time walking [exp(β)=1.09, 95%CI: 1.00-1.19]. Higher residential density [exp(β)=1.000 4, 95%CI:1.000 0-1.000 8], better access to physical activity destinations[exp(β)=1.09, 95%CI: 1.00-1.19], and better aesthetics [exp(β)=1.11, 95%CI:1.00-1.22] were associated with higher leisure-time physical activity. Similarly, these three attributes were positively associated with the possibility of meeting the WHO recommendations. Conclusion: Changing some urban built environment attributes may increase leisure-time physical activity.
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Affiliation(s)
- Y J Duan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - S C Yang
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Y T Han
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - J N Fan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - S J Wang
- Qingdao Municipal Center for Disease Control and Prevention, Qingdao 266033, China
| | - X P Wu
- Sichuan Center for Disease Control and Prevention, Chengdu 610041, China
| | - M Yu
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China
| | - J Y Zhou
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - X C Tian
- Qingdao Municipal Center for Disease Control and Prevention, Qingdao 266033, China
| | - X Y Xu
- Sichuan Center for Disease Control and Prevention, Chengdu 610041, China
| | - M B Liang
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou 310051, China
| | - Y J Hua
- Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - L Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - C Q Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - W J Gao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - W H Cao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - J Lyu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - L M Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
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Liu D, Wang J, Xiao Q, Tian XC, Zhu CR, Jiang JX, Wang CM, Xu Q, Gu XW, Hu HM. [Ossifying fibromyxoid tumor: clinicolpathological futures of 3 cases]. Zhonghua Bing Li Xue Za Zhi 2020; 49:174-176. [PMID: 32074732 DOI: 10.3760/cma.j.issn.0529-5807.2020.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- D Liu
- Department of Pathology, Subei People's Hospital of Jiangsu Province, Yangzhou 225000, China
| | - J Wang
- Department of Pathology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Q Xiao
- Department of Pathology, Subei People's Hospital of Jiangsu Province, Yangzhou 225000, China
| | - X C Tian
- Department of Pathology, Subei People's Hospital of Jiangsu Province, Yangzhou 225000, China
| | - C R Zhu
- Department of Pathology, Subei People's Hospital of Jiangsu Province, Yangzhou 225000, China
| | - J X Jiang
- Department of Pathology, Subei People's Hospital of Jiangsu Province, Yangzhou 225000, China
| | - C M Wang
- Department of Pathology, Subei People's Hospital of Jiangsu Province, Yangzhou 225000, China
| | - Q Xu
- Department of Pathology, Subei People's Hospital of Jiangsu Province, Yangzhou 225000, China
| | - X W Gu
- Department of Pathology, Subei People's Hospital of Jiangsu Province, Yangzhou 225000, China
| | - H M Hu
- Department of Pathology, Xiangcheng People's Hospital of Jiangsu Province, Suzhou 215131, China
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Xu X, Zhou M, Gao RQ, Guo Y, Tian XC, Bian Z, Tan YL, Pei P, Yu CQ, Wang SJ, Chen ZM, Li LM. [Study on correlation between alcohol consumption and obesity in adults in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:759-764. [PMID: 31357794 DOI: 10.3760/cma.j.issn.0254-6450.2019.07.005] [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] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the correlation between alcohol consumption and obesity in adults in China. Methods: The information about alcohol consumption were collected at the baseline survey of the China Kadoorie Biobank. The general obesity and central obesity were defined by BMI and waist circumference (WC) respectively. Logistic regression model was employed to examine the relationship of drinking behavior with general obesity and central obesity. Results: A total of 249 873 adults were included. A J-shaped relationship was observed between alcohol consumption and obesity measurement index (BMI and WC) in men. Compared with non-drinkers, the proportion of general obesity and central obesity were lower in light drinkers (men: OR=0.65, 95%CI: 0.59-0.71 and OR=0.93, 95%CI: 0.88-0.98; women: OR=0.77, 95%CI: 0.65-0.91 and OR=0.89, 95%CI: 0.80-0.99). In men, the proportion of general obesity and central obesity was highest in heavy drinkers (OR=1.21, 95%CI: 1.12-1.32; OR=1.33, 95%CI: 1.27-1.40). BMI and WC were higher in those with a drinking frequency of 3-5 d/week, with largest of proportion of central obesity (men: OR=1.23, 95%CI: 1.16-1.31; women: OR=1.13, 95%CI: 0.99-1.28). The risk for central obesity in men who began drinking every week before 20 years old was 1.24 times higher than non-drinkers (95%CI: 1.16-1.33). Those who drank beer had lower proportion of general obesity (men: OR=0.74, 95%CI: 0.67-0.82; women: OR=0.54, 95%CI: 0.43-0.68). Conclusion: The proportion of obesity was lower in light drinkers but higher in heavy drinkers; and the earlier drinking started, the higher the risk for obesity was.
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Affiliation(s)
- X Xu
- School of Public Health, Qingdao University, Qingdao 266021, China; Department of China Kadoorie Biobank, Chinese Academy of Medical Sciences, Beijing 102308, China
| | - M Zhou
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - R Q Gao
- Department of Chronic Disease Prevention and Control, Qingdao Center for Disease Control and Prevention, Qingdao Preventive Medicine Institute, Qingdao 266033, China
| | - Y Guo
- Department of China Kadoorie Biobank, Chinese Academy of Medical Sciences, Beijing 102308, China
| | - X C Tian
- Department of Chronic Disease Prevention and Control, Qingdao Center for Disease Control and Prevention, Qingdao Preventive Medicine Institute, Qingdao 266033, China
| | - Z Bian
- Department of China Kadoorie Biobank, Chinese Academy of Medical Sciences, Beijing 102308, China
| | - Y L Tan
- Department of China Kadoorie Biobank, Chinese Academy of Medical Sciences, Beijing 102308, China
| | - P Pei
- Department of China Kadoorie Biobank, Chinese Academy of Medical Sciences, Beijing 102308, China
| | - C Q Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - S J Wang
- School of Public Health, Qingdao University, Qingdao 266021, China; Department of Chronic Disease Prevention and Control, Qingdao Center for Disease Control and Prevention, Qingdao Preventive Medicine Institute, Qingdao 266033, China
| | - Z M Chen
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
| | - L M Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
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Tian XC, Wang SJ, Li SP, Guo Y, Bian Z, Lyu SL, Qu WY, Liu JB, Gao RQ, Pang ZC, Li LM, Chen ZM. [Association between fruit consumption and stroke in adults in Qingdao: a prospective study]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:515-520. [PMID: 31177730 DOI: 10.3760/cma.j.issn.0254-6450.2019.05.005] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the fruit consumption of adults of Qingdao and examine the association between fruit consumption and stroke. Methods: We analyzed baseline data and stroke incidence of the participants who were aged 30-79 years and had been enrolled into the China Kadoorie Biobank (CKB) study from Qingdao city. Cox proportional hazards regression model was conducted to estimate the association of fruit consumption with risk of stroke. Results: A total of 35 509 participants were investgated in the baseline survey. Ratio of male to female was 1∶1.27, and the average age was (50.3±10.2) years. Respondents with higher frequency of fruit consumption were younger, more women, with higher education level and higher income (P<0.05). A total of 1 011 new cases of stroke were observed, with a stroke incidence of 387.63/100 000 person-years. Multivariate Cox regression analysis showed that fruit consumption had a protective effect on stroke incidence. Compared to the respondents who never consumed fruit, respondents who consumed fruit more than 4 days per week had a 44% lower risk of stroke incidence (HR=0.56, 95%CI: 0.50-0.62, P<0.05), and the risk reduced by 46% (HR=0.54, 95%CI: 0.46-0.64, P<0.05) and 42% (HR=0.58, 95%CI: 0.52-0.69, P<0.05) in male and female, respectively. Further adjustment for WC, BMI, SBP and random blood glucose did not change the association. Conclusion: Increasing fruit consumption can effectively decrease the risk of stroke. People should increase fruit consumption advisably to set up reasonable and healthy dietary habits.
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Affiliation(s)
- X C Tian
- Qingdao Prefectural Center for Disease Control and Prevention, Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - S J Wang
- Qingdao Prefectural Center for Disease Control and Prevention, Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - S P Li
- Qingdao Prefectural Center for Disease Control and Prevention, Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - Y Guo
- Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Z Bian
- Chinese Academy of Medical Sciences, Beijing 100730, China
| | - S L Lyu
- Licang District Center for Disease Control and Prevention, Qingdao 266041, China
| | - W Y Qu
- Preventive Medicine Department, Central Hospital of Licang District, Qingdao 266041, China
| | - J B Liu
- Preventive Medicine Department, Yongqing Road Community Health Service Center of Licang District, Qingdao 266041, China
| | - R Q Gao
- Qingdao Prefectural Center for Disease Control and Prevention, Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - Z C Pang
- Qingdao Prefectural Center for Disease Control and Prevention, Qingdao Institute of Preventive Medicine, Qingdao 266033, China
| | - L M Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Z M Chen
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
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Shi R, Bai Y, Li S, Wei H, Zhang X, Li L, Tian XC, Jiang Q, Wang C, Qin L, Cai J, Zhang S. Characteristics of spermatogonial stem cells derived from neonatal porcine testis. Andrologia 2014; 47:765-78. [PMID: 25251288 DOI: 10.1111/and.12327] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/16/2014] [Indexed: 12/18/2022] Open
Abstract
The aim of this study was to isolate and characterise porcine spermatogonial stem cells (PSSCs). The putative porcine germline stem cells from testis were isolated successfully by an improving way of enrichment with lymphocyte separation medium (LSM). Results from RT-PCR analyses showed that PSSCs were positive for OCT4, SOX2, NANOG, PGP9.5, c-MYC, KEL4 and PRDM-14 which are multipotent stem cell markers. At the protein level, the results of immunofluorescence analyses showed that PSSCs were positive for OCT4, PGP9.5, SOX2 and CD29. We successfully differentiated these PSSCs into adipocytes and muscle cells and then defined their characteristics, including morphology, surface stem cell markers, and mechanical properties. But the experiment of teratoma formation was negative. The results indicated the PSSCs could be multipotent. Atomic force microscopy was used to characterise the morphological and mechanical properties of undifferentiated PSSCs, as well as the differentiated adipocytes and muscle cells, which could be potentially useful for distinguishing PSSCs from differentiated cells.
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Affiliation(s)
- R Shi
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China.,Key Laboratory of Cellular Physiology, Ministry of Education, Department of Cell Biology and Genetics, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Y Bai
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - S Li
- Life Science and Technology College, Jinan University, Guangzhou, China
| | - H Wei
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - X Zhang
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China.,South-China Primate Research and Development Center, Guangdong Entomological Institute, Guangzhou, China
| | - L Li
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - X C Tian
- Department of Animal Science/Center for Regenerative Biology, University of Connecticut, Storrs, CT, USA
| | - Q Jiang
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - C Wang
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - L Qin
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
| | - J Cai
- Life Science and Technology College, Jinan University, Guangzhou, China
| | - S Zhang
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, China
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Krueger WH, Tanasijevic B, Norris C, Tian XC, Rasmussen TP. Oct4 promoter activity in stem cells obtained through somatic reprogramming. Cell Reprogram 2013; 15:151-8. [PMID: 23550731 DOI: 10.1089/cell.2012.0059] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Multiple methods exist that can reprogram differentiated cells to a pluripotent state similar to that of embryonic stem cells (ESCs). These include somatic cell nuclear transfer (SCNT), fusion-mediated reprogramming (FMR) of somatic cells with ESCs, and the production of induced pluripotent stem cells (iPSCs). All of these methods yield cells in which the endogenous Oct4 gene is reactivated. We were interested in comparing the activity of the Oct4 promoter in three different classes of pluripotent cells, including normal ESCs, FMR cells (FMRCs), and iPSCs. We prepared cells of all three types that harbor a transgene composed of the mouse Oct4 promoter driving green fluorescent protein (Oct4-GFP). All cell derivations started with a characterized transgenic Oct4-GFP mouse, and from this we derived ESCs, FMRCs, and iPSCs with the Oct4-GFP transgene present in an identical genomic integration site in all three cell types. Using flow cytometry we assessed Oct4 promoter expression, cell cycle behavior, and differentiation kinetics. We found similar levels of GFP expression in all three cell types and no significant alterations in pluripotency or differentiation. Our results suggest that the pluripotent condition is a potent "local attractor" state, because it can be achieved through three vastly different avenues.
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Affiliation(s)
- Winfried H Krueger
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
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Sung LY, Chen CH, Xu J, Lin TA, Su HY, Chang WF, Liu CC, Sung YS, Cheng WTK, Zhang J, Tian XC, Ju JC, Chen YE, Wu SC, Du F. Follicular oocytes better support development in rabbit cloning than oviductal oocytes. Cell Reprogram 2011; 13:503-12. [PMID: 22029417 DOI: 10.1089/cell.2011.0030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
This study was conducted to determine the effect of rabbit oocytes collected from ovaries or oviducts on the developmental potential of nuclear transplant embryos. Donor nuclei were obtained from adult skin fibroblasts, cumulus cells, and embryonic blastomeres. Rabbit oocytes were flushed from the oviducts (oviductal oocytes) or aspirated from the ovaries (follicular oocytes) of superovulated does at 10, 11, or 12 h post-hCG injection. The majority of collected oocytes were still attached to the sites of ovulation on the ovaries. We found that follicular oocytes had a significantly higher rate of fusion with nuclear donor cells than oviductal oocytes. There was no difference in the cleavage rate between follicular and oviductal groups, but morula and blastocyst development was significantly higher in the follicular group than in the oviductal group. Two live clones were produced in follicular group using blastomere and cumulus nuclear donors, whereas one live clone was produced in the oviductal group using a cumulus nuclear donor. These results demonstrate that cloned rabbit embryos derived from follicular oocytes have better developmental competence than those derived from oviductal oocytes.
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Affiliation(s)
- Li-Ying Sung
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan, Republic of China
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Park J, Kim C, Tang Y, Amano T, Lin CJ, Tian XC. Reprogramming of mouse fibroblasts to an intermediate state of differentiation by chemical induction. Cell Reprogram 2011; 13:121-31. [PMID: 21473689 DOI: 10.1089/cell.2010.0067] [Citation(s) in RCA: 10] [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: 01/29/2023] Open
Abstract
Induced pluripotent stem cells (iPSCs) generated by forced expression of four transcription factors offer promises for regenerative and therapeutic uses in human diseases. However, it is necessary to overcome the risk of tumorigenicity caused by the use of potent oncogenes and the use of randomly integrating vectors before the iPSC technology can be applied to human medicine. Stem cells and cancer cells share many features in common, implying that there are similar underlying mechanisms in their development. Small molecules have been used to induce cell reprogramming for lineage trans-differentiation and for maintaining pluripotency of stem cells. In this study, we investigated the possibility of replacing all reprogramming viral factors with small molecules. To this end, we evaluated the effects of carcinogens at nongenotoxic levels on somatic cells. We identified 16 candidate chemicals through biology-oriented in silico high-throughput screening with commercially available inventories from Sigma-Aldrich for cancer research, and established a reprogramming protocol of 16-day treatment followed by 5 days of recovery. This protocol was applied to B6/129 mouse embryonic fibroblasts (MEFs) at passage 3. From recovery day 2, colonies appeared at an efficiency of 0.02%. These colonies were positive for both alkaline phosphatase and surface specific embryonic antigen-1 (SSEA-1) at a comparable level to those of mouse embryonic stem cells (ESCs). Global gene expression analysis with a 38K gene MEEBO microarray revealed that the colonies had 564 (1.5%) differentially expressed genes compared to MEFs at day 0 of treatment, and these genes were enriched in "neuromuscular differentiation." Moreover, 122 differentially expressed genes in the colonies were ESC-enriched, including downregulated somatic markers and upregulated stem cell markers. In conclusion, combined chemical treatment of MEFs herein might have caused these cells to transverse to an intermediate state within the mesodermal lineages.
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Affiliation(s)
- Joonghoon Park
- Center for Regenerative Biology, Department of Animal Science, University of Connecticut, 1390 Storrs Road, Storrs, CT 06269, USA
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12
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Jiang L, Marjani SL, Bertolini M, Anderson GB, Yang X, Tian XC. Indistinguishable transcriptional profiles between in vitro- and in vivo-produced bovine fetuses. Mol Reprod Dev 2011; 78:642-50. [DOI: 10.1002/mrd.21362] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Accepted: 06/29/2011] [Indexed: 01/25/2023]
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Wu C, Guo X, Wang F, Li X, Tian XC, Li L, Wu Z, Zhang S. Simulated microgravity compromises mouse oocyte maturation by disrupting meiotic spindle organization and inducing cytoplasmic blebbing. PLoS One 2011; 6:e22214. [PMID: 21765954 PMCID: PMC3135614 DOI: 10.1371/journal.pone.0022214] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Accepted: 06/20/2011] [Indexed: 01/03/2023] Open
Abstract
In the present study, we discovered that mouse oocyte maturation was inhibited by simulated microgravity via disturbing spindle organization. We cultured mouse oocytes under microgravity condition simulated by NASA's rotary cell culture system, examined the maturation rate and observed the spindle morphology (organization of cytoskeleton) during the mouse oocytes meiotic maturation. While the rate of germinal vesicle breakdown did not differ between 1 g gravity and simulated microgravity, rate of oocyte maturation decreased significantly in simulated microgravity. The rate of maturation was 8.94% in simulated microgravity and was 73.0% in 1 g gravity. The results show that the maturation of mouse oocytes in vitro was inhibited by the simulated microgravity. The spindle morphology observation shows that the microtubules and chromosomes can not form a complete spindle during oocyte meiotic maturation under simulated microgravity. And the disorder of γ-tubulin may partially result in disorganization of microtubules under simulated microgravity. These observations suggest that the meiotic spindle organization is gravity dependent. Although the spindle organization was disrupted by simulated microgravity, the function and organization of microfilaments were not pronouncedly affected by simulated microgravity. And we found that simulated microgravity induced oocytes cytoplasmic blebbing via an unknown mechanism. Transmission electron microscope detection showed that the components of the blebs were identified with the cytoplasm. Collectively, these results indicated that the simulated microgravity inhibits mouse oocyte maturation via disturbing spindle organization and inducing cytoplasmic blebbing.
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Affiliation(s)
- Changli Wu
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
| | - Xinzheng Guo
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
| | - Fang Wang
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
| | - Xiaoshuang Li
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
| | - X. Cindy Tian
- Department of Animal Science, Center for Regenerative Biology, University of Connecticut, Storrs, Connecticut, United States of America
| | - Li Li
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
| | - Zhenfang Wu
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
| | - Shouquan Zhang
- Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, People's Republic of China
- * E-mail:
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Tang Y, Lin CJ, Tian XC. Functionality and Transduction Condition Evaluation of Recombinant Klf4 for Improved Reprogramming of iPS Cells. Cell Reprogram 2011; 13:99-112. [DOI: 10.1089/cell.2010.0072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
- Yong Tang
- Center for Regenerative Biology, Department of Animal Science, University of Connecticut, Storrs, Connecticut
| | - Chih-Jen Lin
- Center for Regenerative Biology, Department of Animal Science, University of Connecticut, Storrs, Connecticut
| | - X. Cindy Tian
- Center for Regenerative Biology, Department of Animal Science, University of Connecticut, Storrs, Connecticut
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Park J, Lai L, Samuel M, Wax D, Bruno RS, French R, Prather RS, Yang X, Tian XC. Altered gene expression profiles in the brain, kidney, and lung of one-month-old cloned pigs. Cell Reprogram 2011; 13:215-23. [PMID: 21453050 DOI: 10.1089/cell.2010.0088] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Although numerous mammalian species have been successfully cloned by somatic cell nuclear transfer (SCNT), little is known about gene expression of cloned pigs by SCNT. In the present study, expression profiles of 1-month-old cloned pigs generated from fetal fibroblasts (n = 5) were compared to those of age-matched controls (n = 5) using a 13K oligonucleotide microarray. The brain, kidney, and lung were chosen for microarray analysis to represent tissues from endoderm, mesoderm, and ectoderm in origin. In clones, 179 and 154 genes were differentially expressed in the kidney and the lung, respectively (fold change >2, p < 0.05, false discovery rate = 0.05), whereas only seven genes were differentially expressed in the brain of clones. Functional analysis of the differentially expressed genes revealed that they were enriched in diabetic nephropathy in the kidney, delayed alveologenesis as well as downregulated MAPK signaling pathways in the lung, which was accompanied with collapsed alveoli in the histological examination of the lung. To evaluate whether the gene expression anomalies are associated with changes in DNA methylation, global concentration of the methylated cytosine was measured in lung DNA by HPLC. Clones were significantly hypermethylated (5.72%) compared to the controls (4.13%). Bisulfite-pyrosequencing analyses of the promoter regions of differentially expressed genes, MYC and Period 1 (PER1), however, did not show any differences in the degree of DNA methylation between controls and clones. Together, these findings demonstrate that cloned pigs have altered gene expression that may potentially cause organ dysfunction.
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Affiliation(s)
- Joonghoon Park
- Center for Regenerative Biology, Department of Animal Science, University of Connecticut, Storrs, 06269, USA
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Sung LY, Chang CC, Amano T, Lin CJ, Amano M, Treaster SB, Xu J, Chang WF, Nagy ZP, Yang X, Tian XC. Efficient derivation of embryonic stem cells from nuclear transfer and parthenogenetic embryos derived from cryopreserved oocytes. Cell Reprogram 2010; 12:203-11. [PMID: 20677934 DOI: 10.1089/cell.2009.0072] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Deriving histocompatible embryonic stem (ES) cells by somatic cell nuclear transfer (SCNT) and parthenogenetic activation (PA) requires fresh oocytes, which prevents their applications in humans. Here, we evaluated the efficiency of deriving ES cells from mature metaphase II (MII) and immature metaphase I (MI) vitrified oocytes, by PA or SCNT, in a mouse model. We successfully generated ES cell lines from PA (MII and MI) and SCNT (MII and MI) blastocysts. These cell lines expressed genes and antigens characteristic of pluripotent ES cells and produced full-term pups upon tetraploid embryo complementation. This study established an animal model for efficient generation of patient-specific ES cell lines using cryopreserved oocytes. This is a major step forward in the application of therapeutic cloning and parthenogenetic technology in human regenerative medicine and will serve as an important alternative to the iPS cell technology in countries/regions where these technologies are permitted.
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Affiliation(s)
- Li-Ying Sung
- Institute of Biotechnology, National Taiwan University , Taipei 106, Taiwan
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Tian XC, Park J, Bruno R, French R, Prather RS. Functional Genomics and Epigenetics in Pig Cloning Research. Biol Reprod 2010. [DOI: 10.1093/biolreprod/83.s1.104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Bermejo-Alvarez P, Lin CJ, Choi I, Tian XC, Campbell K, Gutierrez-Adan A. Telomere Length Did Not Differ Between Blastocysts Produced by SCNT or IVF in Bovine, Ovine, and Mouse. Biol Reprod 2010. [DOI: 10.1093/biolreprod/83.s1.708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Chang CC, Lin CJ, Sung LY, Kort HI, Tian XC, Nagy ZP. Impact of phase transition on the mouse oocyte spindle during vitrification. Reprod Biomed Online 2010; 22:184-91. [PMID: 21196132 DOI: 10.1016/j.rbmo.2010.10.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Revised: 10/13/2010] [Accepted: 10/14/2010] [Indexed: 11/18/2022]
Abstract
During vitrification, the glass-like solidification is the phase-transition process from liquid to solid. Phase transition is one of the major factors suspected to affect the physiology of the oocyte, such as the structure of the meiotic spindle. Therefore, it is very important to investigate the systematic and morphological alterations of the metaphase-II spindle and chromosome arrangement during complete course of a vitrification and warming process. B6D2F1 (C57BL/6 X DBA/2) mouse oocytes were cryopreserved by minimum volume cooling (MVC) method of vitrification in a solution with 15% ethylene glycol, 15% dimethylsulphoxide and 0.5 mol/l sucrose. To examine the spindle, oocytes were fixed before, during and after vitrification and were analysed by immunocytochemistry and confocal microscopy. It was shown that spindles in all oocytes could be maintained through the vitrification and warming process, even though they were exposed to extreme temperature and two rounds of phase transition. According to the sequential observations, chromosome alignment was maintained throughout the complete course of vitrification, warming and post-warming stage. The impact of phase transition was barely detectable when the oocyte was exposed to the vitrification and warming process. The oocyte spindle was able to recover immediately after warming.
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Degrelle SA, Lê Cao KA, Heyman Y, Everts RE, Campion E, Richard C, Ducroix-Crépy C, Tian XC, Lewin HA, Renard JP, Robert-Granié C, Hue I. A small set of extra-embryonic genes defines a new landmark for bovine embryo staging. Reproduction 2010; 141:79-89. [PMID: 20926692 DOI: 10.1530/rep-10-0174] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Axis specification in mouse is determined by a sequence of reciprocal interactions between embryonic and extra-embryonic tissues so that a few extra-embryonic genes appear as 'patterning' the embryo. Considering these interactions as essential, but lacking in most mammals the genetically driven approaches used in mouse and the corresponding patterning mutants, we examined whether a molecular signature originating from extra-embryonic tissues could relate to the developmental stage of the embryo proper and predict it. To this end, we have profiled bovine extra-embryonic tissues at peri-implantation stages, when gastrulation and early neurulation occur, and analysed the subsequent expression profiles through the use of predictive methods as previously reported for tumour classification. A set of six genes (CALM1, CPA3, CITED1, DLD, HNRNPDL, and TGFB3), half of which had not been previously associated with any extra-embryonic feature, appeared significantly discriminative and mainly dependent on embryonic tissues for its faithful expression. The predictive value of this set of genes for gastrulation and early neurulation stages, as assessed on naive samples, was remarkably high (93%). In silico connected to the bovine orthologues of the mouse patterning genes, this gene set is proposed as a new trait for embryo staging. As such, this will allow saving the bovine embryo proper for molecular or cellular studies. To us, it offers as well new perspectives for developmental phenotyping and modelling of embryonic/extra-embryonic co-differentiation.
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Affiliation(s)
- Séverine A Degrelle
- INRA-ENVA, UMR 1198 Biologie du Développement et Reproduction, Domaine de Vilvert, Jouy en Josas, France
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Inoue K, Kohda T, Sugimoto M, Sado T, Ogonuki N, Matoba S, Shiura H, Ikeda R, Mochida K, Fujii T, Sawai K, Otte AP, Tian XC, Yang X, Ishino F, Abe K, Ogura A. Impeding Xist expression from the active X chromosome improves mouse somatic cell nuclear transfer. Science 2010; 330:496-9. [PMID: 20847234 DOI: 10.1126/science.1194174] [Citation(s) in RCA: 183] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cloning mammals by means of somatic cell nuclear transfer (SCNT) is highly inefficient because of erroneous reprogramming of the donor genome. Reprogramming errors appear to arise randomly, but the nature of nonrandom, SCNT-specific errors remains elusive. We found that Xist, a noncoding RNA that inactivates one of the two X chromosomes in females, was ectopically expressed from the active X (Xa) chromosome in cloned mouse embryos of both sexes. Deletion of Xist on Xa showed normal global gene expression and resulted in about an eight- to ninefold increase in cloning efficiency. We also identified an Xist-independent mechanism that specifically down-regulated a subset of X-linked genes through somatic-type repressive histone blocks. Thus, we have identified nonrandom reprogramming errors in mouse cloning that can be altered to improve the efficiency of SCNT methods.
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Affiliation(s)
- Kimiko Inoue
- BioResource Center, RIKEN, 305-0024 Tsukuba, Japan
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Presicce GA, Xu J, Gong G, Moreno JF, Chaubal S, Xue F, Bella A, Senatore EM, Yang X, Tian XC, Du F. Oocyte source and hormonal stimulation for in vitro fertilization using sexed spermatozoa in cattle. Vet Med Int 2010; 2011. [PMID: 20885928 PMCID: PMC2946594 DOI: 10.4061/2011/145626] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2010] [Revised: 06/11/2010] [Accepted: 07/08/2010] [Indexed: 01/10/2023] Open
Abstract
The aim of this study was to investigate the efficiency of in vitro embryo production in cattle utilizing sexed sperm from two bulls and oocytes recovered by OPU. Twenty donor animals were employed in eight OPU replicates: the first four OPU trials were conducted on animals without hormone treatment, and the last four were run on the same animals, following FSH subcutaneous and intramuscular administration. A higher rate of blastocyst development was recorded in stimulated, as compared to nonstimulated animals, (25.2% versus 12.8%, P = .001). Ocytes derived from slaughterhouse (SH) ovaries were also fertilized with sperm from the same bulls. Overall, non-sexed sperm used with oocytes derived from SH ovaries was significantly more efficient for blastocyst development than was sexed sperm with these same SH derived oocytes and sexed sperm with stimulated donor oocytes (39.8% versus 25.0% and 25.2%, P = .001). In conclusion, the use of sexed sperm with OPU-derived oocytes resulted in a significantly higher blastocyst development when donors were hormonally stimulated; furthermore, the level of efficiency achieved was comparable to that attained when the same sexed sperm was tested on oocytes derived from SH ovaries.
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Affiliation(s)
- Giorgio A Presicce
- Istituto Superiore di Sanità, Viale Regina Elena, 299, 00161 Rome, Italy
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Chang CC, Gao S, Sung LY, Corry GN, Ma Y, Nagy ZP, Tian XC, Rasmussen TP. Rapid elimination of the histone variant MacroH2A from somatic cell heterochromatin after nuclear transfer. Cell Reprogram 2010; 12:43-53. [PMID: 20132012 DOI: 10.1089/cell.2009.0043] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Oocytes contain a maternal store of the histone variant MacroH2A, which is eliminated from zygotes shortly after fertilization. Preimplantation embryos then execute three cell divisions without MacroH2A before the onset of embryonic MacroH2A expression at the 16-cell stage. During subsequent development, MacroH2A is expressed in most cells, where it is assembled into facultative heterochromatin. Because differentiated cells contain heterochromatin rich in MacroH2A, we investigated the fate of MacroH2A during somatic cell nuclear transfer (SCNT). The results show that MacroH2A is rapidly eliminated from the chromosomes of transplanted somatic cell nuclei by a process in which MacroH2A is first stripped from chromosomes, and then degraded. Furthermore, MacroH2A is eliminated from transplanted nuclei by a mechanism requiring intact microtubules and nuclear envelope break down. Preimplantation SCNT embryos express endogenous MacroH2A once they reach the morula stage, similar to the timing observed in embryos produced by natural fertilization. We also show that the ability to reprogram somatic cell heterochromatin by SCNT is tied to the developmental stage of recipient cell cytoplasm because enucleated zygotes fail to support depletion of MacroH2A from transplanted somatic nuclei. Together, the results indicate that nuclear reprogramming by SCNT utilizes the same chromatin remodeling mechanisms that act upon the genome immediately after fertilization.
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Affiliation(s)
- Ching-Chien Chang
- Center for Regenerative Biology, University of Connecticut, Storrs, Connecticut 06269-4243, USA
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Abstract
Tetraploid (4N) complementation assay is regard as the most stringent characterization test for the pluripotency of embryonic stem (ES) cells. The technology can generate mice fully derived from the injected ES cell (ES-4N) with 4N placentas. However, it remains a very inefficient procedure owing to a lack of information on the optimal conditions for ES incorporation into the 4N embryos. In the present study, we injected ES cells from embryos of natural fertilization (fES) and somatic cell nuclear transfer (ntES) into 4N embryos at various stages of development to determine the optimal stage of ES cells integration by comparing the efficiency of full-term ES-4N mouse generation. Our results demonstrate that fES/ntES cells can be incorporated into 4N embryos at 2-cell, 4-cell and blastocyst stages and full-term mice can be generated. Interestingly, ntES cells injected into the 4-cell group resulted in the lowest efficiency (5.6%) compared to the 2-cell (13.8%, P > 0.05) and blastocyst (16.7%, P < 0.05) stages. Because 4N embryos start to form compacted morulae at the 4-cell stage, we investigated whether the lower efficiency at this stage was due to early compaction by injecting ntES cells into artificially de-compacted embryos treated with calcium free medium. Although the treatment changed the embryonic morphology, it did not increase the efficiency of ES-4N mice generation. Immunochemistry of the cytoskeleton displayed microtubule and microfilament polarization at the late 4-cell stage in 4N embryos, which suggests that de-compaction treatment cannot reverse the polarization process. Taken together, we show here that a wide developmental range of 4N embryos can be used for 4N complementation and embryo polarization and compaction may restrict incorporation of ES cells into 4N embryos.
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Affiliation(s)
- Chih-Jen Lin
- Department of Animal Science, University of Connecticut, Center for Regenerative Biology, Storrs, Connecticut, USA
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Chang CC, Sung LY, Lin CJ, Kort HI, Yang X, Tian XC, Nagy ZP. The oocyte spindle is preserved by 1,2-propanediol during slow freezing. Fertil Steril 2010; 93:1430-9. [DOI: 10.1016/j.fertnstert.2009.01.106] [Citation(s) in RCA: 6] [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] [Received: 10/24/2008] [Revised: 12/10/2008] [Accepted: 01/09/2009] [Indexed: 10/21/2022]
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Curchoe CL, Zhang S, Yang L, Page R, Tian XC. Hypomethylation trends in the intergenic region of the imprinted IGF2 and H19 genes in cloned cattle. Anim Reprod Sci 2009; 116:213-25. [DOI: 10.1016/j.anireprosci.2009.02.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 01/27/2009] [Accepted: 02/03/2009] [Indexed: 11/27/2022]
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Mansouri-Attia N, Aubert J, Reinaud P, Giraud-Delville C, Taghouti G, Galio L, Everts RE, Degrelle S, Richard C, Hue I, Yang X, Tian XC, Lewin HA, Renard JP, Sandra O. Gene expression profiles of bovine caruncular and intercaruncular endometrium at implantation. Physiol Genomics 2009; 39:14-27. [PMID: 19622795 DOI: 10.1152/physiolgenomics.90404.2008] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
At implantation the endometrium undergoes modifications necessary for its physical interactions with the trophoblast as well as the development of the conceptus. We aim to identify endometrial factors and pathways essential for a successful implantation in the caruncular (C) and the intercaruncular (IC) areas in cattle. Using a 13,257-element bovine oligonucleotide array, we established expression profiles at day 20 of the estrous cycle or pregnancy (implantation), revealing 446 and 1,295 differentially expressed genes (DEG) in C and IC areas, respectively (false discovery rate = 0.08). The impact of the conceptus was higher on the immune response function in C but more prominent on the regulation of metabolism function in IC. The C vs. IC direct comparison revealed 1,177 and 453 DEG in cyclic and pregnant animals respectively (false discovery rate = 0.05), with a major impact of the conceptus on metabolism and cell adhesion. We selected 15 genes including C11ORF34, CXCL12, CXCR4, PLAC8, SCARA5, and NPY and confirmed their differential expression by quantitative RT-PCR. The cellular localization was analyzed by in situ hybridization and, upon pregnancy, showed gene-specific patterns of cell distribution, including a high level of expression in the luminal epithelium for C11ORF34 and MX1. Using primary cultures of bovine endometrial cells, we identified PTN, PLAC8, and CXCL12 as interferon-tau (IFNT) target genes and MSX1 and CXCR7 as IFNT-regulated genes, whereas C11ORF34 was not an IFNT-regulated gene. Our transcriptomic data provide novel molecular insights accounting for the biological functions related to the C or IC endometrial areas and may contribute to the identification of potential biomarkers for normal and perturbed early pregnancy.
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Affiliation(s)
- Nadéra Mansouri-Attia
- Institut National de la Recherche Agronomique, Unité Mixte de Recherche (UMR) 1198 Biologie du Développement et Reproduction, Jouy-en-Josas, France
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Park J, Tang Y, Amano T, Lin CJ, Tian XC. Chemical Induction of Alkaline Phosphatase and Surface-Specific Embryonic Antigen-1 Positive Colonies from Mouse Embryonic Fibroblasts. Biol Reprod 2009. [DOI: 10.1093/biolreprod/81.s1.659] [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: 11/12/2022] Open
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29
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Du F, Xu J, Zhang J, Gao S, Carter MG, He C, Sung LY, Chaubal S, Fissore RA, Tian XC, Yang X, Chen YE. Beneficial effect of young oocytes for rabbit somatic cell nuclear transfer. Cloning Stem Cells 2009; 11:131-40. [PMID: 19090660 DOI: 10.1089/clo.2008.0042] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
This study was designed to examine the effect of the age of rabbit oocytes on the developmental potential of cloned embryos. The metaphase II oocytes used for nuclear transfer (NT) were collected at 10, 12, 14, and 16 h post-hCG injection (hpi). The total number of oocytes collected per donor (21.4-23.7) at 12 to 16 hpi was similar, but significantly higher than that collected at 10 hpi (16.2). Additionally, a significant improvement in blastocyst development was achieved with embryos generated by electrically mediated cell fusion (56.0%), compared to those from nuclear injection (13.1 %) (Experiment 1). Markedly higher blastocyst development (45.8-54.5%) was also achieved with oocytes collected at 10-12 hpi than from those collected 14-16 hpi (8.3-14.3%) (Experiment 2). In Experiment 3, the blastocyst rates of NT embryos derived from oocytes harvested 12 hpi (39.2-42.8 %) were significantly higher than from those collected at 16 hpi (6.8-8.4 %) (p < 0.05), regardless of the donor cell age. Kinase activity assays showed variable changes of activity in rabbit oocytes over the period of 10-16 hpi; however, there was no correlation with preimplantational development (blastocyst rate vs. MPF, R = 0.326; blastocyst rate vs. MAPK, R = -0.131). Embryo transfer of NT embryos utilizing 12 hpi oocytes resulted in one full-term but stillborn, and one live cloned rabbit; thus, an efficiency of 1.7 % (n = 117) (Experiment 4). These results demonstrated that NT utilizing relatively young rabbit oocytes, harvested at 10-12 h after hCG injection, was beneficial for the development of NT embryos.
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Affiliation(s)
- Fuliang Du
- Evergen Biotechnologies, Inc, Vernon, Connecticut 06066, USA.
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Abstract
Somatic cells can be reprogrammed to a totipotent state through nuclear transfer or cloning, because it has been demonstrated that the oocyte has the ability to reprogramme an adult nucleus into an embryonic state that can initiate the development of a new organism. Therapeutic cloning, whereby nuclear transfer is used to derive patient-specific embryonic stem cells, embraces an entire new opportunity for regenerative medicine. However, a key obstacle for human therapeutic cloning is that the source of fresh human oocytes is extremely limited. In the present review, we propose prospective sources of human oocytes by using oocyte cryopreservation, such as an oocyte bank and immature oocytes. We also address some potential issues associated with nuclear transfer when using cryopreserved oocytes. In the future, if the efficacy and efficiency of cryopreserved oocytes are comparable to those of fresh oocytes in human therapeutic cloning, the use of cryopreserved oocytes would be invaluable and generate a great impact to regenerative medicine.
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Abstract
Studies on cloned pigs are scant compared with those in mice and cattle. Expression profiles of cloned pig embryos on full-term cloned pigs are even more limited owing to the limited availability of DNA microarray technology in the pig. We have conducted expression profile comparisons between pigs from somatic cell nuclear transfer and pigs from conventional breeding at birth and 1 month of age. Differentially expressed genes that are subjected to DNA methylation were also examined for their DNA methylation status. These data will be presented in the 2009 Annual Meeting of the International Embryo Transfer Society in San Diego. In the present review, we focus on summarising existing findings on epigenetic and other changes in cloned embryo, cloned pigs and their offspring by conventional breeding.
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Smith SL, Everts RE, Sung LY, Du F, Page RL, Henderson B, Rodriguez-Zas SL, Nedambale TL, Renard JP, Lewin HA, Yang X, Tian XC. Gene expression profiling of single bovine embryos uncovers significant effects of in vitro maturation, fertilization and culture. Mol Reprod Dev 2009; 76:38-47. [DOI: 10.1002/mrd.20927] [Citation(s) in RCA: 53] [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: 12/29/2022]
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33
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Marjani SL, Le Bourhis D, Vignon X, Heyman Y, Everts RE, Rodriguez-Zas SL, Lewin HA, Renard JP, Yang X, Tian XC. Embryonic gene expression profiling using microarray analysis. Reprod Fertil Dev 2009; 21:22-30. [DOI: 10.1071/rd08217] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Microarray technology enables the interrogation of thousands of genes at one time and therefore a systems level of analysis. Recent advances in the amplification of RNA, genome sequencing and annotation, and the lower cost of developing microarrays or purchasing them commercially, have facilitated the analysis of single preimplantation embryos. The present review discusses the components of embryonic expression profiling and examines current research that has used microarrays to study the effects of in vitro production and nuclear transfer.
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Abstract
Somatic cell nuclear transfer (SCNT, 'cloning') holds great potential for agricultural applications, generation of medical model animals, transgenic farm animals or by 'therapeutic cloning' for generating human embryonic stem cells for the treatment of human diseases. However, the low survival rate of SCNT-derived pregnancies represents a serious limitation of the current technology. In order to overcome this hurdle, a deeper understanding of the epigenetic reprogramming of the somatic cell nuclei and its effect on the pregnancy is needed. Here we review the literature on nuclear reprogramming by SCNT, including studies of gene expression, DNA methylation, chromatin remodelling, genomic imprinting and X chromosome inactivation. Reprogramming of genes expressed in the inner cell mass, from which the body of the foetus is formed, seems to be highly efficient. Defects in the extra-embryonic tissues are probably the major cause of the low success rate of reproductive cloning. Methods to partially overcome such problems exist, yet more future research is needed to find practical and efficient methods to remedy this problem. Improvement of the survival of foetuses is a central issue for the future of agricultural SCNT not only for its economic viability, but also because in lack of improvements in animal welfare current regulations can block the use of the method in the EU and several other countries.
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Affiliation(s)
- A Dinnyes
- Genetic Reprogramming Group, Agricultural Biotechnology Centre, Godollo, Hungary.
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35
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Lin CJ, Sung LY, Yang X, Krawetz SA, Tian XC. Dynamic Changes of Nuclear Halo Structure of In Vivo-Fertilized and Cloned Preimplantation Mouse Embryos. Biol Reprod 2008. [DOI: 10.1093/biolreprod/78.s1.161a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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36
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Park J, Davis S, Suteevun T, Bruno R, Prather R, Yang X, Tian XC. DNA Methylation Analyses in Lungs of Cloned Pigs. Biol Reprod 2008. [DOI: 10.1093/biolreprod/78.s1.65c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Kim C, Amano T, Park J, Carter MG, Tian XC, Yang X. Improvement of Mouse Embryonic Stem Cell Derivation Efficiency with Novel Medium, Glucose Concentration, and Epigenetic Modifications. Biol Reprod 2008. [DOI: 10.1093/biolreprod/78.s1.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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38
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Li C, Bin Y, Curchoe C, Yang L, Feng D, Jiang Q, O'Neill M, Tian XC, Zhang S. Genetic imprinting of H19 and IGF2 in domestic pigs (Sus scrofa). Anim Biotechnol 2008; 19:22-7. [PMID: 18228173 DOI: 10.1080/10495390701758563] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The genes insulin-like growth factor 2 (IGF2) and H19 express paternally and maternally, respectively, in humans, mice, sheep, and cattle. Additionally, IGF2 has been shown to be regulated by at least four promoters in a tissue- or development-specific manner. In the domestic pigs, the promoter- and tissue-specific imprinting pattern of IGF2 has not been well characterized, nor is the imprinting pattern of H19. In the present study, we identified two polymorphisms in each of IGF2 (exons 2 and 9) and H19 (exons 1 and 5) and determined the imprinting status of these two genes in 13 organs / tissues of week-old pigs. IGF2 P1 transcript is bi-allelically expressed (not imprinted) in all major organs studied, while the majority of IGF2 transcripts are expressed from promoters 2-4 and are imprinted. H19 is exclusively expressed from the maternal allele in all major organs, concurrent with observations in other species.
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Affiliation(s)
- Chao Li
- College of Animal Science, South China Agricultural University, Guangzhou, People's Republic of China
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39
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Everts RE, Chavatte-Palmer P, Razzak A, Hue I, Green CA, Oliveira R, Vignon X, Rodriguez-Zas SL, Tian XC, Yang X, Renard JP, Lewin HA. Aberrant gene expression patterns in placentomes are associated with phenotypically normal and abnormal cattle cloned by somatic cell nuclear transfer. Physiol Genomics 2008; 33:65-77. [DOI: 10.1152/physiolgenomics.00223.2007] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Transcription profiling of placentomes derived from somatic cell nuclear transfer (SCNT, n = 20), in vitro fertilization (IVF, n = 9), and artificial insemination (AI, n = 9) at or near term development was performed to better understand why SCNT and IVF often result in placental defects, hydrops, and large offspring syndrome (LOS). Multivariate analysis of variance was used to distinguish the effects of SCNT, IVF, and AI on gene expression, taking into account the effects of parturition (term or preterm), sex of fetus, breed of dam, breed of fetus, and pathological finding in the offspring (hydrops, normal, or other abnormalities). Differential expression of 20 physiologically important genes was confirmed with quantitative PCR. The largest effect on placentome gene expression was attributable to whether placentas were collected at term or preterm (i.e., whether the collection was because of disease or to obtain stage-matched controls) followed by placentome source (AI, IVF, or SCNT). Gene expression in SCNT placentomes was dramatically different from AI ( n = 336 genes; 276 >2-fold) and from IVF ( n = 733 genes; 162 >2-fold) placentomes. Functional analysis of differentially expressed genes (DEG) showed that IVF has significant effects on genes associated with cellular metabolism. In contrast, DEG associated with SCNT are involved in multiple pathways, including cell cycle, cell death, and gene expression. Many DEG were shared between the gene lists for IVF and SCNT comparisons, suggesting that common pathways are affected by the embryo culture methods used for IVF and SCNT. However, the many unique gene functions and pathways affected by SCNT suggest that cloned fetuses may be starved and accumulating toxic wastes due to placental insufficiency caused by reprogramming errors. Many of these genes are candidates for hydrops and LOS.
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Affiliation(s)
- Robin E. Everts
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Pascale Chavatte-Palmer
- UMR Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy-en-Josas, France
| | - Anthony Razzak
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Isabelle Hue
- UMR Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy-en-Josas, France
| | - Cheryl A. Green
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Rosane Oliveira
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
| | - Xavier Vignon
- UMR Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy-en-Josas, France
| | | | - X. Cindy Tian
- Center for Regenerative Biology/Department of Animal Sciences, University of Connecticut, Storrs, Connecticut
| | - Xiangzhong Yang
- Center for Regenerative Biology/Department of Animal Sciences, University of Connecticut, Storrs, Connecticut
| | - Jean-Paul Renard
- UMR Biologie du Développement et Reproduction, Institut National de la Recherche Agronomique, Jouy-en-Josas, France
| | - Harris A. Lewin
- Department of Animal Sciences, University of Illinois at Urbana-Champaign, Urbana, Illinois
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40
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Niemann H, Tian XC, King WA, Lee RSF. Epigenetic reprogramming in embryonic and foetal development upon somatic cell nuclear transfer cloning. Reproduction 2008; 135:151-63. [DOI: 10.1530/rep-07-0397] [Citation(s) in RCA: 171] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The birth of ‘Dolly’, the first mammal cloned from an adult donor cell, has sparked a flurry of research activities to improve cloning technology and to understand the underlying mechanism of epigenetic reprogramming of the transferred somatic cell nucleus. Especially in ruminants, somatic cell nuclear transfer (SCNT) is frequently associated with pathological changes in the foetal and placental phenotype and has significant consequences for development both before and after birth. The most critical factor is epigenetic reprogramming of the transferred somatic cell nucleus from its differentiated status into the totipotent state of the early embryo. This involves an erasure of the gene expression program of the respective donor cell and the establishment of the well-orchestrated sequence of expression of an estimated number of 10 000–12 000 genes regulating embryonic and foetal development. The following article reviews the present knowledge on the epigenetic reprogramming of the transferred somatic cell nucleus, with emphasis on DNA methylation, imprinting, X-chromosome inactivation and telomere length restoration in bovine development. Additionally, we briefly discuss other approaches towards epigenetic nuclear reprogramming, including the fusion of somatic and embryonic stem cells and the overexpression of genes crucial in the formation and maintenance of the pluripotent status. Improvements in our understanding of this dramatic epigenetic reprogramming event will be instrumental in realising the great potential of SCNT for basic biological research and for various agricultural and biomedical applications.
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41
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Jiang L, Jobst P, Lai L, Samuel M, Prather RS, Ayares D, Yang X, Tian XC. Expression of X-linked genes in deceased neonates and surviving cloned female piglets. Mol Reprod Dev 2008; 75:265-73. [PMID: 17474099 PMCID: PMC2494708 DOI: 10.1002/mrd.20758] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Animal cloning through somatic cell nuclear transfer (NT) is very inefficient, probably due to insufficient reprogramming of the donor nuclei, which in turn would cause the dysregulation of gene expression. X-Chromosome inactivation (XCI) is a multi-step epigenetic process utilized by mammals to achieve dosage compensation in females. Our aim was to determine if any dysregulation of X-linked genes, which would be indicative of unfaithful reprogramming of donor nuclei, was present in cloned pigs. Real time reverse transcription polymerase chain reaction (RT-PCR) was performed to quantify the transcript levels of five X-linked genes, X inactivation-specific transcript (XIST), TSIX (the reverse spelling of XIST), hypoxanthine guanine phosphoribosyltransferase 1 (HPRT1), glucose-6-phosphate dehydrogenase (G6PD), V-raf murine sarcoma 3,611 viral oncogene homolog 1 (ARAF1), and one autosomal gene, alpha-1 type IV collagen (COL4A1) in major organs of neonatal deceased and surviving female cloned pigs as well as their age-matched control pigs from conventional breeding. Aberrant expression level of these genes was prevalent in the neonatal deceased clones, while it was only moderate in cloned pigs that survived after birth. These results suggest a correlation between the viability of the clones and the normality of their gene expression and provide a possible explanation for the death of a large portion of cloned animals around birth.
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Affiliation(s)
- Le Jiang
- Department of Animal Science and Center for Regenerative Biology, University of Connecticut, Storrs, CT 06269
| | - Pete Jobst
- Revivicor Inc., 1700 Kraft Drive, Suite 2400, Blacksburg, VA 24060
| | - Liangxue Lai
- Division of Animal Science, University of Missouri-Columbia, Columbia, MO 65211
| | - Melissa Samuel
- Division of Animal Science, University of Missouri-Columbia, Columbia, MO 65211
| | - Randall S. Prather
- Division of Animal Science, University of Missouri-Columbia, Columbia, MO 65211
| | - David Ayares
- Revivicor Inc., 1700 Kraft Drive, Suite 2400, Blacksburg, VA 24060
| | - Xiangzhong Yang
- Department of Animal Science and Center for Regenerative Biology, University of Connecticut, Storrs, CT 06269
| | - X. Cindy Tian
- Department of Animal Science and Center for Regenerative Biology, University of Connecticut, Storrs, CT 06269
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Nedambale TL, Du F, Xu J, Tian XC, Yang X. Effects of vitrification and post-thawing interval on the cytoskeleton and subsequent fertilization rate of in vitro derived bovine oocytes. S AFR J ANIM SCI 2007. [DOI: 10.4314/sajas.v36i5.4073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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43
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Tian XC, Smith SL, Zhang SQ, Kubota C, Curchoe C, Xue F, Yang L, Du F, Sung LY, Yang X. Nuclear reprogramming by somatic cell nuclear transfer--the cattle story. ACTA ACUST UNITED AC 2007; 64:327-39. [PMID: 17491157 DOI: 10.5661/rdr-vi-327] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Somatic cell nuclear transfer (cloning) returns a differentiated cell to a totipotent status; a process termed nuclear reprogramming. Nuclear transfer has potential applications in agriculture and biomedicine, but is limited by low efficiency. To understand the deficiencies of nuclear reprogramming, our research has focused on both candidate genes (imprinted and X-linked genes) and global gene expression patterns in cloned bovine embryos/offspring as compared to those generated by conventional reproduction. We found aberrant expression patterns of H19 and Igf2r as well as X-linked genes in term cloned calves. The expression profiles of cloned blastocysts, however, closely resembled those of the naturally fertilized embryos but were considerably different from those of their nuclear donor cells. Our findings suggest that cloned embryos have undergone significant nuclear reprogramming by the blastocyst stage. However, it is possible that during re-differentiation in later development gene expression aberrancies occur. Additionally, small initial nuclear reprogramming errors may be manifested during subsequent development.
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Affiliation(s)
- X C Tian
- Department of Animal Science/Center for Regenerative Biology, University of Connecticut, Storrs, CT, USA.
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Lonergan P, Evans ACO, Boland E, Rizos D, Fair T, Duffy P, Sung LY, Du F, Chaubal S, Xu J, Yang X, Tian XC. Pregnancy and fetal characteristics after transfer of vitrified in vivo and cloned bovine embryos. Theriogenology 2007; 68:1128-37. [PMID: 17875317 DOI: 10.1016/j.theriogenology.2007.08.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [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: 06/11/2007] [Revised: 08/01/2007] [Accepted: 08/03/2007] [Indexed: 11/20/2022]
Abstract
This study was conducted to examine pregnancy progression and fetal characteristics following transfer of vitrified bovine nuclear transfer versus in vivo-derived embryos. Nuclear transfer (NT) was conducted using cumulus cells collected from an elite Holstein-Friesian dairy cow. Expanding and hatching blastocysts on Day 7 were vitrified using liquid nitrogen surface vitrification. Day 7 in vivo embryos, produced using standard superovulation procedures applied to Holstein-Friesian heifers (n=6), were vitrified in the same way. Following warming, embryos were transferred to synchronized recipients (NT: n=65 recipients; Vivo: n=20 recipients). Pregnancies were monitored by ultrasound scanning on Days 25, 45 and 75 and a sample of animals were slaughtered at each time point to recover the fetus/placenta for further analyses. Significantly more animals remained pregnant after transfer of in vivo-derived embryos than NT embryos at all time points: Day 25 (95.0 versus 67.7%, P<0.05), Day 45 (92.8 versus 49.1%, P<0.01) and Day 75 (70.0 versus 20.8%, P<0.0). There was no significant difference (P=0.10) in the weight of the conceptus on Day 25 from NT transfers (1.14+/-0.23 g, n=8) versus in vivo transfers (0.75+/-0.19 g, n=8). On Day 45, there was no significant difference in the weight of either fetus (P=0.393) or membranes (P=0.167) between NT embryos (fetus: 2.76+/-0.40, n=12; membranes: 59.0+/-10.0, n=11) or in vivo-derived embryos (fetus: 2.60+/-0.15, n=6; membranes: 41.8+/-5.2, n=4). However, on Day 75 the weight of the fetus and several of the major organs were heavier from NT embryos. These data suggest that morphological abnormalities involving the fetus and the placenta of cloned pregnancies are manifested after Day 45.
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Affiliation(s)
- P Lonergan
- School of Agriculture, Food Science and Veterinary Medicine, College of Life Sciences, University College Dublin, Belfield, Dublin 4, Ireland.
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Go A, Bay A, Abe K, Aihara H, Anipko D, Aulchenko V, Aushev T, Bakich AM, Barberio E, Belous K, Bitenc U, Bizjak I, Blyth S, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi Y, Choi YK, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Golob B, Gorisek A, Ha H, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Jacoby C, Kang JH, Katayama N, Kawasaki T, Khan HR, Kichimi H, Kim HJ, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lange JS, Lee J, Lee MJ, Lesiak T, Limosani A, Lin SW, Liu Y, Liventsev D, Matsumoto T, Matyja A, McOnie S, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Mori T, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Peak LS, Pestotnik R, Peters M, Piilonen LE, Sahoo H, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Seidl R, Senyo K, Shapkin M, Shibuya H, Shwartz B, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumiyoshi T, Takasaki F, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Varner G, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wicht J, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zupanc A. Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Upsilon(4S) --> B0 B0 decays. Phys Rev Lett 2007; 99:131802. [PMID: 17930575 DOI: 10.1103/physrevlett.99.131802] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2007] [Indexed: 05/25/2023]
Abstract
The neutral B meson pair produced at the Upsilon(4S) should exhibit a nonlocal correlation of the type discussed by Einstein, Podolsky, and Rosen. We measure this correlation using the time-dependent flavor asymmetry of semileptonic B(0) decays, which we compare with predictions from quantum mechanics and two local realistic models. The data are consistent with quantum mechanics, and inconsistent with the other models. Assuming that some B pairs disentangle to produce B(0) and B(0) with definite flavor, we find a decoherent fraction of 0.029 +/ -0.057, consistent with no decoherence.
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Affiliation(s)
- A Go
- National Central University, Chung-li
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Zhang LM, Zhang ZP, Adachi I, Aihara H, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bitenc U, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chiang CC, Cho IS, Choi Y, Choi YK, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Gokhroo G, Golob B, Ha H, Haba J, Hara T, Hastings NC, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ikado K, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Joshi NJ, Kah DH, Kaji H, Kajiwara S, Kang JH, Kawai H, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim SK, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lee JS, Lee MJ, Lee SE, Lesiak T, Li J, Limosani A, Lin SW, Liu Y, Liventsev D, Matsumoto T, Matyja A, McOnie S, Medvedeva T, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Nagasaka Y, Nakamura I, Nakano E, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park H, Peak LS, Pestotnik R, Piilonen LE, Poluektov A, Sahoo H, Sakai Y, Schneider O, Schümann J, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shinomiya S, Shiu JG, Shwartz B, Singh JB, Sokolov A, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumisawa K, Sumiyoshi T, Suzuki S, Tajima O, Takasaki F, Tamai K, Tamura N, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Tsuboyama T, Uehara S, Ueno K, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Vervink K, Villa S, Vinokurova A, Wang CH, Wang MZ, Wang P, Watanabe Y, Won E, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yuan CZ, Zhang CC, Zhilich V, Zupanc A. Measurement of D0-D0 mixing parameters in D0 --> Ks pi+ pi- decays. Phys Rev Lett 2007; 99:131803. [PMID: 17930576 DOI: 10.1103/physrevlett.99.131803] [Citation(s) in RCA: 5] [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: 06/21/2007] [Indexed: 05/25/2023]
Abstract
We report a measurement of D0-D(0) mixing parameters in D(0) --> K(s)(0) pi(+) pi(-) decays using a time-dependent Dalitz-plot analysis. We first assume CP conservation and subsequently allow for CP violation. The results are based on 540 fb(-1) of data accumulated with the Belle detector at the KEKB e(+)e(-) collider. Assuming negligible CP violation, we measure the mixing parameters x = (0.80 +/- 0.29(-0.07-0.14)(+0.09+0.10))% and y = (0.33+/-0.24(-0.12-0.08)(+0.08+0.06))%, where the errors are statistical, experimental systematic, and systematic due to the Dalitz decay model, respectively. Allowing for CP violation, we obtain the CP-violating parameters |q / p| = 0.86(-0.29-0.03)(+0.30+0.06) +/- 0.08 and arg(q/p) = (-14(-18-3-4)(+16+5+2)) degrees .
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Affiliation(s)
- L M Zhang
- University of Science and Technology of China, Hefei
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47
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Lin SW, Chang P, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Aulchenko V, Aushev T, Bahinipati S, Bakich AM, Barberio E, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Browder TE, Chang MC, Chao Y, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi SK, Choi Y, Choi YK, Dalseno J, Dash M, Dragic J, Drutskoy A, Eidelman S, Fratina S, Gabyshev N, Garmash A, Go A, Golob B, Ha H, Haba J, Hara T, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou WS, Hsiung YB, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kapusta P, Kataoka SU, Kawai H, Kawasaki T, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuzmin A, Kwon YJ, Lee MJ, Lesiak T, Liventsev D, Macnaughton J, Mandl F, Matsumoto T, McOnie S, Medvedeva T, Mitaroff W, Miyake H, Miyata H, Miyazaki Y, Moloney GR, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Pestotnik R, Piilonen LE, Sahoo H, Sakai Y, Satoyama N, Schietinger T, Schneider O, Schümann J, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shibuya H, Shwartz B, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Sumisawa K, Sumiyoshi T, Suzuki S, Suzuki SY, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Varner G, Varvell KE, Villa S, Wang CC, Wang CH, Wang MZ, Watanabe Y, Wicht J, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yusa Y, Zhang CC, Zhang ZP, Zupanc A. Measurements of branching fractions for B --> K pi and B --> pi pi decays. Phys Rev Lett 2007; 99:121601. [PMID: 17930495 DOI: 10.1103/physrevlett.99.121601] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2007] [Indexed: 05/25/2023]
Abstract
We report measurements of branching fractions for B --> K pi and B --> pi pi decays based on a data sample of 449 x 10(6) BB[over] pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We also measure the ratios of partial widths for B-->Kpi decays, namely R(c) identical with 2Gamma(B(+) --> K(+) pi(0))/Gamma(B(+) --> K(0) pi(+)) = 1.08+/-0.06+/-0.08 and R(n) identical with Gamma(B(0) --> K(+) pi(-))/2 Gamma(B(0) --> K(0) pi(0)) = 1.08+/-0.08+/-0.08, where the first and the second errors are statistical and systematic, respectively. These ratios are sensitive to enhanced electroweak penguin contributions from new physics; the new measurements are, however, consistent with standard model expectations.
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Affiliation(s)
- S-W Lin
- Department of Physics, National Taiwan University, Taipei, Taiwan
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48
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Belous K, Shapkin M, Sokolov A, Abe K, Abe K, Adachi I, Aihara H, Anipko D, Arinstein K, Aulchenko V, Aushev T, Bakich AM, Barberio E, Bay A, Bedny I, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Browder TE, Chang MC, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi Y, Choi YK, Cole S, Dalseno J, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Fujikawa M, Gabyshev N, Gershon T, Gokhroo G, Golob B, Ha H, Haba J, Hasegawa Y, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kang JH, Kapusta P, Katayama N, Kawasaki T, Khan HR, Kichimi H, Kim YJ, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Lee J, Lee MJ, Lee SE, Lesiak T, Lin SW, Liventsev D, Majumder G, Mandl F, Matsumoto T, Matyja A, McOnie S, Miyake H, Miyata H, Miyazaki Y, Mizuk R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park H, Park KS, Pestotnik R, Piilonen LE, Poluektov A, Sakai Y, Satoyama N, Schneider O, Schümann J, Seidl R, Senyo K, Sevior ME, Shibuya H, Shwartz B, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Suzuki SY, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Usov Y, Varner G, Villa S, Vinokurova A, Wang CH, Watanabe Y, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A. Measurement of the tau lepton mass and an upper limit on the mass difference between tau+ and tau-. Phys Rev Lett 2007; 99:011801. [PMID: 17678147 DOI: 10.1103/physrevlett.99.011801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2007] [Indexed: 05/16/2023]
Abstract
The mass of the tau lepton has been measured in the decay mode tau-->3pinutau using a pseudomass technique. The result obtained from 414 fb-1 of data collected with the Belle detector is Mtau=[1776.61+/-0.13(stat)+/-0.35(sys)] MeV/c2. The upper limit on the relative mass difference between positive and negative tau leptons is |Mtau+-Mtau-|/Mtau<2.8 x 10-4 at 90% confidence level.
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Affiliation(s)
- K Belous
- Institute of High Energy Physics, Protvino
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Smith S, Le Bourhis D, Vignon X, Heyman Y, Lewin H, Tian XC, Renard JP, Yang X. GLOBAL GENE EXPRESSION PROFILING OF SINGLE, CLONED BOVINE EMBRYOS WITH DIFFERENT DEVELOPMENTAL COMPETENCIES: THE GOOD, THE BAD, AND THE UGLY. Biol Reprod 2007. [DOI: 10.1093/biolreprod/77.s1.217b] [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: 11/15/2022] Open
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50
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Mizuk R, Abe K, Adachi I, Aihara H, Anipko D, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Bay A, Bedny I, Belous K, Bitenc U, Bizjak I, Blyth S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder TE, Chang MC, Chen A, Chen KF, Chen WT, Cheon BG, Chistov R, Choi Y, Choi YK, Cole S, Dalseno J, Danilov M, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Garmash A, Gershon T, Gokhroo G, Golob B, Ha H, Haba J, Hayasaka K, Hayashii H, Hazumi M, Heffernan D, Hokuue T, Hoshi Y, Hou S, Hou WS, Iijima T, Ikado K, Imoto A, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kaji H, Kang JH, Kapusta P, Katayama N, Khan HR, Kichimi H, Kim YJ, Kinoshita K, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar R, Kuo CC, Kuzmin A, Kwon YJ, Leder G, Lee J, Lee MJ, Lee SE, Lesiak T, Lin SW, Liventsev D, Majumder G, Mandl F, Matsumoto T, Matyja A, McOnie S, Miyake H, Miyata H, Miyazaki Y, Nakao M, Natkaniec Z, Nishida S, Ogawa S, Ohshima T, Okuno S, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park H, Park KS, Peak LS, Pestotnik R, Piilonen LE, Sakai Y, Satoyama N, Schneider O, Schümann J, Seidl R, Senyo K, Sevior ME, Shapkin M, Shibuya H, Singh JB, Somov A, Soni N, Stanic S, Staric M, Stoeck H, Suzuki SY, Takasaki F, Tamai K, Tanaka M, Taylor GN, Teramoto Y, Tian XC, Tikhomirov I, Tsuboyama T, Tsukamoto T, Uehara S, Uglov T, Ueno K, Uno S, Urquijo P, Usov Y, Varner G, Villa S, Wang CH, Watanabe Y, Won E, Xie QL, Yabsley BD, Yamaguchi A, Yamashita Y, Yamauchi M, Yuan CZ, Zhang LM, Zhang ZP, Zhilich V, Zupanc A. Experimental constraints on the spin and parity of the Lambdac(2880)+. Phys Rev Lett 2007; 98:262001. [PMID: 17678081 DOI: 10.1103/physrevlett.98.262001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2007] [Indexed: 05/16/2023]
Abstract
We report the results of several studies of the Lambda(c)(+)pi(+)pi(-)X final state in continuum e(+)e(-) annihilation data collected by the Belle detector. An analysis of angular distributions in Lambda(c)(2880)(+)-->Sigma(c)(2455)(0,++)pi(+,-) decays strongly favors a Lambda(c)(2880)(+) spin assignment of 5/2 over 3/2 or 1/2. We find evidence for Lambda(c)(2880)(+)-->Sigma(c)(2520)(0,++)pi(+,-) decay and measure the ratio of Lambda(c)(2880)(+) partial widths Gamma(Sigma(c)(2520)pi)/Gamma(Sigma(c)(2455)pi)=0.225+/-0.062+/-0.025. This value favors the Lambda(c)(2880)(+) spin-parity assignment of 5/2(+) over 5/2(-). We also report the first observation of Lambda(c)(2940)(+)-->Sigma(c)(2455)(0,++)pi(+,-) decay and measure Lambda(c)(2880)(+) and Lambda(c)(2940)(+) mass and width parameters. These studies are based on a 553 fb(-1) data sample collected at or near the Upsilon(4S) resonance at the KEKB collider.
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Affiliation(s)
- R Mizuk
- Institute for Theoretical and Experimental Physics, Moscow
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