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Qi Q, Jiang Y, Zhou X, Lü Y, Xiao R, Bai J, Lou H, Sun W, Lian Y, Hao N, Li M, Chang J. Whole-genome sequencing analysis in fetal structural anomalies: novel phenotype-genotype discoveries. Ultrasound Obstet Gynecol 2024; 63:664-671. [PMID: 37842862 DOI: 10.1002/uog.27517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 09/28/2023] [Accepted: 10/03/2023] [Indexed: 10/17/2023]
Abstract
OBJECTIVES The identification of structural variants and single-nucleotide variants is essential in finding molecular etiologies of monogenic genetic disorders. Whole-genome sequencing (WGS) is becoming more widespread in genetic disease diagnosis. However, data on its clinical utility remain limited in prenatal practice. We aimed to expand our understanding of implementing WGS in the genetic diagnosis of fetal structural anomalies. METHODS We employed trio WGS with a minimum coverage of 40× on the MGI DNBSEQ-T7 platform in a cohort of 17 fetuses presenting with aberrations detected by ultrasound, but uninformative findings of standard chromosomal microarray analysis (CMA) and exome sequencing (ES). RESULTS Causative genetic variants were identified in two families, with an increased diagnostic yield of 11.8% (2/17). Both were exon-level copy-number variants of small size (3.03 kb and 5.16 kb) and beyond the detection thresholds of CMA and ES. Moreover, to the best of our knowledge, we have described the first prenatal instance of the association of FGF8 with holoprosencephaly and facial deformities. CONCLUSIONS Our analysis demonstrates the clinical value of WGS in the diagnosis of the underlying etiology of fetuses with structural abnormalities, when routine genetic tests have failed to provide a diagnosis. Additionally, the novel variants and new fetal manifestations have expanded the mutational and phenotypic spectrums of BBS9 and FGF8. © 2023 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- Q Qi
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Y Jiang
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - X Zhou
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Y Lü
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - R Xiao
- National Engineering Laboratory for Key Technology of Birth Defect Control and Prevention, Screening and Diagnostic R&D Center, Zhejiang, China
| | - J Bai
- Becreative Lab Co. Ltd, Beijing, China
| | - H Lou
- Becreative Lab Co. Ltd, Beijing, China
| | - W Sun
- Biosan Biochemical Technologies Co. Ltd., Zhejiang, China
| | - Y Lian
- Biosan Biochemical Technologies Co. Ltd., Zhejiang, China
| | - N Hao
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - M Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - J Chang
- Department of Medical Research Center, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
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Liu X, Lu Y, Lian Y, Chen Z, Xia J, Meng L, Qi Z. Erratum to 'Macrophage Depletion Improves Chronic Rejection in Rats With Allograft Heart Transplantation' [Trans Proc 52 (2020) 992-1000]. Transplant Proc 2023; 55:1762. [PMID: 32703674 DOI: 10.1016/j.transproceed.2020.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- X Liu
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of General Surgery, Affiliated Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Y Lu
- Department of General Surgery, Affiliated Zhongshan Hospital of Xiamen University, Xiamen, China
| | - Y Lian
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of Thoracic Surgery, Xiamen Hospital of Traditional Chinese Medicine, Xiamen, China
| | - Z Chen
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of General Surgery, The Second Hospital of Xiamen City, Xiamen, China
| | - J Xia
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China
| | - L Meng
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China
| | - Z Qi
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China.
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Gao T, Mao J, Huang J, Luo F, Lin L, Lian Y, Bin S, Zhao L, Li S. Prognostic significance of circulating tumor cell measurement in the peripheral blood of patients with nasopharyngeal carcinoma. Clinics (Sao Paulo) 2023; 78:100179. [PMID: 36963168 PMCID: PMC10064788 DOI: 10.1016/j.clinsp.2023.100179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 11/12/2022] [Accepted: 01/04/2023] [Indexed: 03/26/2023] Open
Abstract
OBJECTIVE Nasopharyngeal Carcinoma (NPC) is lethal cancer. Typically, relapse and metastasis are the outcomes of most patients. Against this backdrop, this study aimed to investigate the correlation between Circulating Tumor Cell (CTC) profiles and clinicopathological features in patients with NPC. PATIENTS AND METHODS A total of 119 blood samples from 79 patients were collected from patients with NPC during treatment. CanPatrolTM CTC enrichment and RNA In Situ Hybridization (RNA-ISH) were used to characterize CTCs, including epithelial, Mesenchymal (MCTCs), and epithelial/mesenchymal mixed types according to their surface markers. RESULTS The number of CTCs and MCTCs in the pre-treatment group was significantly higher than that in the post-treatment group (p < 0.05). The total number of CTCs and MCTCs cell numbers was significant correlation with Tumor-Node-Metastasis (TNM) staging (p < 0.05), Progression-Free Survival (PFS), and Overall Survival (OS). The PFS of patients with > 7 CTCs or > 5 MCTCs per 5 mL blood was significantly shorter PFS than those patients with ≤ 7 CTCs or ≤ 5 MCTCs (p < 0.05). Patients treated with targeted therapy combined with chemoradiotherapy had poorer PFS and OS rates than those treated with chemoradiotherapy (p < 0.05). The Kaplan-Meier survival analysis also demonstrated that patients with changes in CTC > 4 were strongly associated with PFS and OS rates (p < 0.05). CONCLUSION CTC and MCTC number detection in patients with NPC is a useful biomarker for predicting patient progress. Patients with more than 7 CTCs or 5 MCTCs in 5 mL of blood had shorter PFS and OS rates. CTC and MCTC count changes were also significantly associated with the patient's therapy.
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Affiliation(s)
- Tinghua Gao
- Department of Oncology, First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong, China
| | - Jinxing Mao
- Department of Oncology, First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong, China
| | - Jindu Huang
- Department of Oncology, First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong, China
| | - Fengling Luo
- Department of Oncology, First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong, China
| | - Lixiang Lin
- Department of Oncology, First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong, China
| | - Yingni Lian
- Department of Oncology, First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong, China
| | - Sanmei Bin
- Department of Oncology, First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong, China
| | - Lianghua Zhao
- Department of Oncology, First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong, China
| | - Shuping Li
- Department of Oncology, First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong, China.
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Wang C, Li F, Lian Y, He X. Clinical Analysis of Targeted Therapy Combined with Immunotherapy for Neoadjuvant Treatment of Advanced Hepatocellular Carcinoma. Indian J Pharm Sci 2022. [DOI: 10.36468/pharmaceutical-sciences.spl.595] [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: 01/28/2023] Open
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Lian Y, Tian Y. The Clinical Study of the Effect of WBRT on Cognitive Function of Patients With Brain Metastasis of Lung Cancer. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1543] [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: 11/25/2022]
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Dong F, Jiang M, Zhang Z, Li F, Lian Y. C1q/TNF-related protein-9 suppresses inflammation in synovial cells from patients with osteoarthritis. Scand J Rheumatol 2021; 51:368-373. [PMID: 34514937 DOI: 10.1080/03009742.2021.1946996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Objective: Synovial inflammation contributes to cartilage degeneration and osteoarthritis (OA) development. Targeting the inflammation process may provide a promising strategy for OA treatment. It has been demonstrated that C1q/tumour necrosis factor-related protein-9 (CTRP9) has immunosuppression capabilities. Thus, we conducted this study to investigate the role of CTRP9 in OA and its therapeutic potential.Method: The expression level of CTRP9 was quantified in peripheral blood mononuclear cells (PBMCs), serum, and synovial cells (SCs) isolated from OA patients by quantitative polymerase chain reaction and enzyme-linked immunosorbent assay. The relationship between the expression level of CTRP9 and the disease activity of OA was determined. The inflammation-suppressing effects of CTRP9 were assessed in vitro.Results: The expression level of CTRP9 was increased in the PBMCs and serum of OA compared to healthy controls. The serum level of CTRP9 was found to be positively correlated with erythrocyte sedimentation rate, C-reactive protein, and visual analogue scale score. In addition, CTRP9 protein suppressed the expression of pro-inflammatory cytokines, including tumour necrosis factor-α, interleukin-6, and interleukin-1β, in PBMCs and SCs in vitro. CTRP9 was increased in OA patients and positively correlated with the disease activity. The recombinant CTRP9 had inflammation-suppressing activities in vitro.Conclusion: CTRP9 may have therapeutic potential for treating OA.Osteoarthritis (OA) is characterized as cartilage destruction resulting from synovial inflammation (1-6). According to the clinical symptoms and levels of inflammation, OA has been divided into primary generalized osteoarthritis (PGOA) and erosive inflammatory osteoarthritis (EIOA) (7). The only available treatment for OA is joint replacement. Thus, it is necessary to develop novel and effective therapeutic strategies to treat OA.Because synovial inflammation contributes to OA development, targeting the inflammation process may provide a promising strategy for OA treatment. Previous investigations showed that pro-inflammatory factors promoted OA development (8-10), while anti-inflammatory factors suppressed it (11-14). Thus, we conducted the present study to investigate the role of C1q/tumour necrosis factor-related protein-9 (CTRP9), an anti-inflammatory factor (15), in OA, and its therapeutic potential.
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Affiliation(s)
- F Dong
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
| | - M Jiang
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
| | - Z Zhang
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
| | - F Li
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
| | - Y Lian
- Department of Orthopaedic Surgery, The Fourth Affiliated Hospital of Harbin Medical University, Harbin, P.R. China
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Hong S, Zhang Y, Yu G, Peng P, Peng J, Jia J, Wu X, Huang Y, Yang Y, Lin Q, Xi X, Xu M, Chen D, Lu X, Wang R, Cao X, Chen X, Lin Z, Xiong J, Lin Q, Xie C, Li Z, Pan J, Li J, Wu S, Lian Y, Yang Q, Zhao C, Fang W, Zhang L. Gemcitabine Plus Cisplatin Versus Fluorouracil Plus Cisplatin as First-Line Therapy for Recurrent or Metastatic Nasopharyngeal Carcinoma: Final Overall Survival Analysis of GEM20110714 Phase III Study. J Clin Oncol 2021; 39:3273-3282. [PMID: 34379443 PMCID: PMC8500603 DOI: 10.1200/jco.21.00396] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [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] [Indexed: 12/08/2022] Open
Abstract
GEM20110714 (ClinicalTrials.gov identifier: NCT01528618), the first randomized, phase III study of systemic chemotherapy in recurrent or metastatic nasopharyngeal carcinoma (NPC), reported significant progression-free survival improvement with gemcitabine plus cisplatin (GP) versus fluorouracil plus cisplatin (FP; hazard ratio, 0.55; 95% CI, 0.44 to 0.68; P < .001). Data from the final analysis of overall survival (OS) are presented here. A summary of the article: "A new benchmark: the GEM20110714 study reported long-term OS improvement with gemcitabine/ cisplatin in RM-NPC."![]()
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Affiliation(s)
- Shaodong Hong
- Department of Medical Oncology of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University, Guangzhou, China
| | - Yaxiong Zhang
- Department of Medical Oncology of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University, Guangzhou, China
| | - Gengsheng Yu
- Department of Medical Oncology, Jiangmen Central Hospital, Jiangmen, China
| | - Peijian Peng
- Department of Medical Oncology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Jiewen Peng
- Department of Medical Oncology, Zhongshan People's Hospital, Zhongshan, China
| | - Jun Jia
- Department of Medical Oncology, Dongguan People's Hospital, Dongguan, China
| | - Xuan Wu
- Department of Medical Oncology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Yan Huang
- Department of Medical Oncology of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University, Guangzhou, China
| | - Yunpeng Yang
- Department of Medical Oncology of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University, Guangzhou, China
| | - Qing Lin
- Department of Oncology, Shunde Hospital Guangzhou University of Chinese Medicine, Foshan, China
| | - Xuping Xi
- Department of Radiotherapy, Cancer Hospital of Hunan Province, Changsha, China
| | - Mingjun Xu
- Department of Oncology, The First Affiliated Hospital of Gangnan Medical College, Gangnan, China
| | - Dongping Chen
- Department of Radiotherapy, The Affiliated Cancer Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaojun Lu
- Department of Radiotherapy, Zhongshan People's Hospital, Zhongshan, China
| | - Rensheng Wang
- Department of Radiotherapy, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xiaolong Cao
- Department of Oncology, Panyu Central Hospital, Guangzhou, China
| | - Xiaozhong Chen
- Department of Radiotherapy, Cancer Hospital of Zhejiang Province, Hangzhou, China
| | - Zhixiong Lin
- Department of Medical Oncology, The Affiliated Cancer Hospital of Shantou University, Shantou, China
| | - Jianping Xiong
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qin Lin
- Department of Radiotherapy, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Conghua Xie
- Department of Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zhihua Li
- Department of Oncology, Sun Yat-sen Memorial Hospital, Guangzhou, China
| | - Jianji Pan
- Department of Radiotherapy, Fujian Provincial Cancer Hospital, Fuzhou, China
| | - Jingao Li
- Department of Radiotherapy, Jiangxi Provincial Cancer Hospital, Nanchang, China
| | - Shixiu Wu
- Department of Radiotherapy, Cancer Hospital of Hangzhou City, Hangzhou, China
| | - Yingni Lian
- Department of Medical Oncology, The First People's Hospital of Zhaoqing City, Zhaoqing, China
| | - Quanlie Yang
- Department of Chemotherapy, People's Hospital of Meizhou, Meizhou, China
| | - Chong Zhao
- Department of Nasopharyngeal Carcinoma of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University, Guangzhou, China
| | - Wenfeng Fang
- Department of Medical Oncology of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University, Guangzhou, China
| | - Li Zhang
- Department of Medical Oncology of Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University, Guangzhou, China
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Liu X, Lu Y, Lian Y, Chen Z, Xia J, Meng L, Qi Z. Macrophage Depletion Improves Chronic Rejection in Rats With Allograft Heart Transplantation. Transplant Proc 2020; 52:992-1000. [PMID: 32122662 DOI: 10.1016/j.transproceed.2019.12.037] [Citation(s) in RCA: 3] [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] [Received: 02/26/2019] [Revised: 10/11/2019] [Accepted: 12/15/2019] [Indexed: 10/24/2022]
Abstract
BACKGROUND Macrophages may be important in chronic rejection after organ transplantation. This study aimed to investigate the possibility of depleting macrophages for a certain amount of time to alleviate chronic rejection in a heart transplant model of Fischer to Lewis rats. METHODS Clodronate liposome was injected abdominally to deplete macrophages for 2 time frames. The expression levels of ectodysplasin 1, arginase 1 (Arg1), chitinase-like lectin (Ym1), interferon gamma, tumor necrosis factor α (TNF-α), smooth muscle α-actin (α-SMA), monocyte chemoattractant protein 1 (MCP-1), and interleukin 10 (IL-10) were detected. RESULTS 1. The expression levels of α-SMA, interferon gamma, TNF-α, and MCP-1 and the transformation of peripheral T cells were lower after macrophage depletion for 2 or 4 weeks. 2. The expression levels of α-SMA, TNF-α, and MCP-1 and the transformation of peripheral T cells were even lower after 4 weeks compared with 2 weeks, except for interferon gamma. 3. A higher level of expression of Arg1 and Ym1 after macrophage depletion for 2 weeks was observed. 4. A higher level of expression of IL-10 after macrophage depletion for 2 weeks, but not 4 weeks, was also observed. CONCLUSIONS Macrophage clearance after heart transplantation alleviated chronic rejection probably via M2 polarization of regenerated macrophages, reduced T-lymphocyte proliferation, and changed the expression levels of interferon gamma, TNF-α, MCP-1, and IL-10.
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Affiliation(s)
- X Liu
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of General Surgery, Affiliated Xiang'an Hospital of Xiamen University, Xiamen, China.
| | - Y Lu
- Department of General Surgery, Affiliated Zhongshan Hospital of Xiamen University, Xiamen, China
| | - Y Lian
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of Thoracic Surgery, Xiamen Hospital of Traditional Chinese Medicine, Xiamen, China
| | - Z Chen
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China; Department of General Surgery, The Second Hospital of Xiamen City, Xiamen, China
| | - J Xia
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China
| | - L Meng
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China
| | - Z Qi
- Organ Transplantation Institute, Medical College, Xiamen University, Xiamen, China.
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Chen L, Zhao W, Zhong G, Watts C, Gunn JP, Liu X, Lian Y, DLP Team. Thermal Analysis on Various Design Concepts of ITER Divertor Langmuir Probes. Fusion Science and Technology 2018. [DOI: 10.1080/15361055.2017.1415614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- L. Chen
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - W. Zhao
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - G. Zhong
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - C. Watts
- ITER Organization, Route de Vinon-sur-Verdon, CS 90046, 13067 St. Paul Lez Durance Cedex, France
| | | | - X. Liu
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - Y. Lian
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
| | - DLP Team
- Southwestern Institute of Physics, Chengdu, Sichuan 610025, China
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Ruppert K, Cauley J, Lian Y, Zgibor JC, Derby C, Solomon DH. The effect of insulin on bone mineral density among women with type 2 diabetes: a SWAN Pharmacoepidemiology study. Osteoporos Int 2018; 29:347-354. [PMID: 29075805 PMCID: PMC5818624 DOI: 10.1007/s00198-017-4276-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 10/13/2017] [Indexed: 12/12/2022]
Abstract
UNLABELLED This was a longitudinal study examining the effects of insulin use on bone mineral density loss. Insulin use was found to be associated with greater bone mineral density loss at the femoral neck among women with diabetes mellitus. INTRODUCTION Women with diabetes mellitus (DM) have higher bone mineral density (BMD) and experience slower BMD loss but have an increased risk of fracture. The data regarding the effect of insulin treatment on BMD remains conflicted. We examined the impact of insulin initiation on BMD. METHODS We investigated the annual changes in BMD associated with the new use of insulin among women with DM in the Study of Women's Health Across the Nation (SWAN). Propensity score (PS) matching, which is a statistical method that helps balance the baseline characteristics of women who did and did not initiate insulin, was used. Covariates with a potential impact on bone health were included in all models. Mixed model regression was used to test the change in BMD between the two groups. Median follow-up time was 5.4 years. RESULTS The cohort consisted of 110 women, mean age, 53.6 years; 49% white and 51% black. Women using insulin (n = 55) were similar on most relevant characteristics to the 55 not using insulin. Median diabetes duration for the user group was 10 vs. 5.0 years for the non-user group. There was a greater loss of BMD at the femoral neck among insulin users (- 1.1%) vs non-users (- 0.77%) (p = 0.04). There were no differences in BMD loss at the spine - 0.30% vs - 0.32% (p = 0.85) or at the total hip - 0.31% vs - 0.25 (p = 0.71), respectively. CONCLUSIONS Women with T2DM who initiated insulin experienced a more rapid BMD loss at the femoral neck as compared to women who did use insulin.
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Affiliation(s)
- K Ruppert
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, 4420 Bayard St Suite 600, Pittsburgh, PA, 15260, USA.
| | - J Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, 4420 Bayard St Suite 600, Pittsburgh, PA, 15260, USA
| | - Y Lian
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, 4420 Bayard St Suite 600, Pittsburgh, PA, 15260, USA
| | - J C Zgibor
- Department of Epidemiology and Biostatistics, University of South Florida, Tampa, FL, USA
| | - C Derby
- Department of Neurology, Albert Einstein College of Medicine, New York, NY, USA
| | - D H Solomon
- Division of Rheumatology, Division of Pharmacoepidemiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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Qiu C, Yin T, Zhang Y, Lian Y, You Y, Wang K, Zheng R, Shuai X. Ultrasound Imaging Based on Molecular Targeting for Quantitative Evaluation of Hepatic Ischemia-Reperfusion Injury. Am J Transplant 2017; 17:3087-3097. [PMID: 28489274 DOI: 10.1111/ajt.14345] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 04/26/2017] [Accepted: 04/27/2017] [Indexed: 01/25/2023]
Abstract
The aim of the present study was to quantitatively diagnose and monitor the therapy response of hepatic ischemia-reperfusion injury (IRI) with the use of targeted ultrasound (US) imaging. Targeted microbubbles (MBs) were fabricated, and the binding of intracellular adhesion molecule 1 (ICAM-1) antibodies to MBs was observed. To establish a quantitative method based on targeted US imaging, contrast-enhanced US was applied for IRI rats. After andrographolide treatment, the IRI rats were subjected to the quantitative targeted US imaging for a therapeutic effect. Effective binding of ICAM-1 antibodies to MBs was observed. According to the quantitative targeted US imaging, the ICAM-1 normalized intensity difference (NID) in the IRI rats (38.74 ± 15.08%) was significantly higher than that in the control rats (10.08 ± 2.52%, p = 0.048). Further, different degrees of IRI (mild IRI, moderate to severe IRI) were distinguished by the use of the NID (37.14 ± 2.14%, 22.34 ± 1.08%, p = 0.002). Analysis of mRNA expression demonstrated the accuracy of analyzing the NID by using quantitative targeted US imaging (R2 = 0.7434, p < 0.001). Andrographolide treatment resulted in an obviously weakened NID of ICAM-1 (17.7 ± 4.8% vs 34.2 ± 6.6%, p < 0.001). The study showed the potential of the quantitative targeted US imaging method for the diagnosis and therapeutic monitoring of IRI.
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Affiliation(s)
- C Qiu
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - T Yin
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Y Zhang
- Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Department of Liver Transplantation, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Y Lian
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Y You
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - K Wang
- Key Laboratory of Molecular Imaging, Institute of Automation, Chinese Academy of Science, Beijing, China
| | - R Zheng
- Department of Medical Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Key Laboratory of Liver Disease Research, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - X Shuai
- PCFM Lab of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou, China.,Center for Biomedical Engineering, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
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12
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Lian Y, Gao C, Wu Y, Xia J, Leng Y, Liu Y, Zhu M, Chen J, Qi Z. Suppression of Delayed Xenograft Rejection by Resveratrol in a Hamster-to-Rat Cardiac Transplantation Model. Transplant Proc 2017; 49:1483-1491. [DOI: 10.1016/j.transproceed.2017.03.091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 03/09/2017] [Accepted: 03/30/2017] [Indexed: 12/13/2022]
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13
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Ji J, Liu T, Xiang B, Liu Z, Jia Y, Lian Y, Lin Z, Xu F, Liu W, Zhu H, Niu T, Pan L, Gong Y, Chang H, Huang J, Wu Y, Li J, He C, Xie L, Ma H, Tang Y, Guo Y, Kuang P, Dong T. A MULTI-CENTER STUDY OF GLIDE CHEMOTHERAPY CONSOLIDATED WITH AUTOLOGOUS STEM CELL TRANSPLANTATION FOR NEWLY DIAGNOSED STAGE IV AND RELAPSED EXTRANODAL NATURAL KILLER/T-CELL LYMPHOMA PATIENTS. Hematol Oncol 2017. [DOI: 10.1002/hon.2438_105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- J. Ji
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - T. Liu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - B. Xiang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Z. Liu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Jia
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Lian
- Hematology; Chengdu First People's Hospital; Chengdu China
| | - Z. Lin
- Hematology; Affiliated Hospital & Clinical Medical College of Chengdu University; Chengdu China
| | - F. Xu
- Hematology; Mianyang Central Hospital; Mianyang China
| | - W. Liu
- Pathology; West China Hospital of Sichuan University; Chengdu China
| | - H. Zhu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - T. Niu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - L. Pan
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Gong
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - H. Chang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - J. Huang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Wu
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - J. Li
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - C. He
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - L. Xie
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - H. Ma
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Tang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - Y. Guo
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - P. Kuang
- Hematology; West China Hospital of Sichuan University; Chengdu China
| | - T. Dong
- Hematology; West China Hospital of Sichuan University; Chengdu China
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Ding J, Xie M, Lian Y, Zhu Y, Peng P, Wang J, Wang L, Wang K. Long noncoding RNA HOXA-AS2 represses P21 and KLF2 expression transcription by binding with EZH2, LSD1 in colorectal cancer. Oncogenesis 2017; 6:e288. [PMID: 28112720 PMCID: PMC5294247 DOI: 10.1038/oncsis.2016.84] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [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: 07/10/2016] [Revised: 10/06/2016] [Accepted: 10/14/2016] [Indexed: 12/24/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) have received increased attention as a new class of functional regulators involved in human carcinogenesis. HOXA cluster antisense RNA 2 (HOXA-AS2) is a 1048-bp lncRNA located between the HOXA3 and HOXA4 genes in the HOXA cluster that regulates gene expression at a transcription level. HOXA-AS2 is previously found to be overexpressed in gastric cancer (GC) and promotes GC cells proliferation. However, its potential role and molecular mechanism in colorectal cancer (CRC) are not known. Here, we identified that HOXA-AS2 is significantly upregulated in CRC tissue. In addition, increased HOXA-AS2 expression is associated with a larger tumor size and an advanced pathological stage in CRC patients. HOXA-AS2 knockdown significantly suppressed proliferation by blocking the G1/S transition and caused apoptosis of CRC cells in vitro and in vivo. The mechanistic investigations showed that HOXA-AS2 could interact with EZH2 (enhancer of zeste homolog 2), LSD1 (lysine specific demethylase 1) and recruit them to p21 (CDKN1A), KLF2 promoter regions to repress their transcription. Furthermore, the rescue experiments demonstrated that HOXA-AS2 oncogenic function is partly through regulating p21. In conclusion, our data suggest that HOXA-AS2 may function as an oncogene by modulating the multiple genes expression involved in CRC proliferation, and also provides a potential target for CRC therapy.
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Affiliation(s)
- J Ding
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - M Xie
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, Nanjing Medical University Affiliated Suzhou Hospital, Jiangsu, PR China
| | - Y Lian
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - Y Zhu
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - P Peng
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - J Wang
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - L Wang
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
| | - K Wang
- Department of Oncology, Second Affiliated Hospital, Nanjing Medical University, Jiangsu, PR China
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15
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Ren XL, Liu P, Lian Y, Huang J, Zheng XY, Zhu YJ, Qiao J. [Effect of catheter choice during embryo transfer on the clinical outcome of in vitro fertilization-embryo transfer]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:905-909. [PMID: 27752179] [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: 06/06/2023]
Abstract
OBJECTIVE To compare two flexible embryo catheters and determine whether clinical outcome differs in the in vitro fertilization-embryo transfer (IVF-ET) cycles. METHODS This prospective control study was conducted by one doctor between July 2012 and November 2013. In the study, 2 064 patients undergoing fresh embryo transfer by using IVF-ET/intracytoplasmic sperm injection (ICSI)-ET in Reproductive Medical Center of Peking University Third Hospital were recruited. The subjects were divided into two groups. Cook Sydney IVF embryo transfer catheters (product model: K-JETS-7019-SIVF) were used for embryo transfer in group 1 (n=949), and Frydman-CCD catheters (product model: 131230301) were used in group 2 (n=1 115). Pregnancy outcomes were compared between these two groups. RESULTS There was no significant difference in age, diagnosis for infertility and stimulation protocol used between the two groups. In addition, there was no difference in the number of oocytes collected and in the number and score of embryos transferred. The significantly higher implantation rate, clinical pregnancy rate, and live birth rate (34.40% vs. 26.92%, 51.21% vs. 41.52%, 42.57% vs. 33.09%, P<0.05) were observed in group 1 compared with group 2. The abortion rate was not significantly different between the two groups (11.93% vs. 15.98%, P>0.05). The proportion of difficult transfer was higher in group 1 than that in group 2 (5.27% vs. 3.41%, P<0.05). There was no difference in the clinical pregnancy rate and live birth rate between the two difficult transfer cycles. CONCLUSION The type of embryo transfer catheter affects the clinical outcome in IVF. Good clinical outcome can be obtained by using Cook Sydney IVF catheter, which is worthy of clinical promotion.
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Affiliation(s)
- X L Ren
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - P Liu
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - Y Lian
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - J Huang
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - X Y Zheng
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - Y J Zhu
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
| | - J Qiao
- Reproductive Medical Center, Peking University Third Hospital, Beijing 100191, China
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Zhang L, Huang Y, Hong S, Yang Y, Yu G, Jia J, Peng P, Wu X, Lin Q, Xi X, Peng J, Xu M, Chen D, Lu X, Wang R, Cao X, Chen X, Lin Z, Xiong J, Lin Q, Xie C, Li Z, Pan J, Li J, Wu S, Lian Y, Yang Q, Zhao C. Gemcitabine plus cisplatin versus fluorouracil plus cisplatin in recurrent or metastatic nasopharyngeal carcinoma: a multicentre, randomised, open-label, phase 3 trial. Lancet 2016; 388:1883-1892. [PMID: 27567279 DOI: 10.1016/s0140-6736(16)31388-5] [Citation(s) in RCA: 333] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 08/03/2016] [Accepted: 08/05/2016] [Indexed: 02/07/2023]
Abstract
BACKGROUND Outcomes are poor for patients with recurrent or metastatic nasopharyngeal carcinoma and no well established first-line chemotherapy is available for the disease. We compared the efficacy and safety of gemcitabine plus cisplatin versus fluorouracil plus cisplatin in patients with recurrent or metastatic nasopharyngeal carcinoma. METHODS In this multicentre, randomised, open-label, phase 3 trial, patients with recurrent or metastatic nasopharyngeal carcinoma were recruited from 22 hospitals in China. Key inclusion criteria were Eastern Cooperative Oncology Group performance status of 0 or 1, adequate organ function, and measurable lesions according to Response Evaluation Criteria in Solid Tumors version 1.1. Patients were randomly assigned in a 1:1 ratio to receive either gemcitabine (1 g/m2 intravenously on days 1 and 8) and cisplatin (80 mg/m2 intravenously on day 1), or fluorouracil (4 g/m2 in continuous intravenous infusion over 96 h) and cisplatin (80 mg/m2 on day 1 given intravenously) once every 3 weeks for a maximum of six cycles. The randomisation was done centrally via an interactive phone response system using block randomisation with a size of six. The primary endpoint was progression-free survival assessed by the independent image committee in the intention-to-treat population. Safety analyses were done in patients who received at least one cycle of study drug. This study is ongoing and is registered with ClinicalTrials.gov, number NCT01528618. FINDINGS Between Feb 20, 2012, and Oct 30, 2015, 362 patients were randomly assigned to a group (181 to the gemcitabine [plus cisplatin] group and 181 to the fluorouracil [plus cisplatin] group). Median follow-up time for progression-free survival was 19·4 months (IQR 12·1-35·6). The median progression-free survival was 7·0 months (4·4-10·9) in the gemcitabine group and 5·6 months (3·0-7·0) in the fluorouracil group (hazard ratio [HR] 0·55 [95% CI 0·44-0·68]; p<0·0001). A total of 180 patients in the gemcitabine group and 173 patients in the fluorouracil group were included in the safety analysis. Significantly different treatment-related grade 3 or 4 adverse events between the gemcitabine and fluorouracil groups were leucopenia (52 [29%] vs 15 [9%]; <0·0001), neutropenia (41 [23%] vs 23 [13%]; p=0·0251), thrombocytopenia (24 [13%] vs three [2%]; p=0·0007), and mucosal inflammation (0 vs 25 [14%]; <0·0001). Serious treatment-related adverse events occurred in seven (4%) patients in the gemcitabine group and ten (6%) in the fluorouracil group. Six (3%) patients in the gemcitabine group and 14 (8%) patients in the fluorouracil group discontinued treatment because of drug-related adverse events. No treatment-related deaths occurred in either group. INTERPRETATION Gemcitabine plus cisplatin prolongs progression-free survival in patients with recurrent or metastatic nasopharyngeal carcinoma. The results establish gemcitabine plus cisplatin as the standard first-line treatment option for this population. FUNDING Sun Yat-Sen University Clinical Research 5010 Programme, Chinese National Natural Science Foundation project (grant numbers 81372502 and 81201917), the National High Technology Research and Development Program of China (863 program numbers 2012AA02A501 and 2012AA02A502), and the Natural Science Foundation of Guangdong (grant number S2013010016564).
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Affiliation(s)
- Li Zhang
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.
| | - Yan Huang
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Shaodong Hong
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Yunpeng Yang
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Gengsheng Yu
- Department of Medical Oncology, Jiangmen Central Hospital, Jiangmen, China
| | - Jun Jia
- Department of Medical Oncology, Dongguan People's Hospital, Dongguan, China
| | - Peijian Peng
- Department of Medical Oncology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Xuan Wu
- Department of Medical Oncology, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Qing Lin
- Department of Oncology, Shunde Hospital of Traditional Chinese Medicine, Foshan, China
| | - Xuping Xi
- Department of Radiotherapy, Cancer Hospital of Hunan Province, Changsha, China
| | - Jiewen Peng
- Department of Medical Oncology, Zhongshan People's Hospital, Zhongshan, China
| | - Mingjun Xu
- Department of Oncology, The First Affiliated Hospital of Gangnan Medical College, Gangnan, China
| | - Dongping Chen
- Department of Radiotherapy, The Affiliated Cancer Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaojun Lu
- Department of Radiotherapy, Zhongshan People's Hospital, Zhongshan, China
| | - Rensheng Wang
- Department of Radiotherapy, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xiaolong Cao
- Department of Oncology, Panyu Central Hospital, Guangzhou, China
| | - Xiaozhong Chen
- Department of Radiotherapy, Cancer Hospital of Zhejiang Province, Hangzhou, China
| | - Zhixiong Lin
- Department of Medical Oncology, The Affiliated Cancer Hospital of Shantou University, Shantou, China
| | - Jianping Xiong
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qin Lin
- Department of Radiotherapy, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Conghua Xie
- Department of Oncology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Zhihua Li
- Department of Oncology, Sun Yat-sen Memorial Hospital, Guangzhou, China
| | - Jianji Pan
- Department of Radiotherapy, Fujian Provincial Cancer Hospital, Fuzhou, China
| | - Jingao Li
- Department of Radiotherapy, Jiangxi Provincial Cancer Hospital, Nanchang, China
| | - Shixiu Wu
- Department of Radiotherapy, Cancer Hospital of Hangzhou City, Hangzhou, China
| | - Yingni Lian
- Department of Medical Oncology, The First People's Hospital of Zhaoqing City, Zhaoqing, China
| | - Quanlie Yang
- Department of Chemotherapy, People's Hospital of Meizhou, Meizhou, China
| | - Chong Zhao
- Department of Radiotherapy, Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
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Xia H, Gong Z, Lian Y, Zhou J, Wang X. Gene Expression Profile Regulated by CREB in K562 Cell Line. Transplant Proc 2016; 48:2221-34. [PMID: 27569974 DOI: 10.1016/j.transproceed.2016.04.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Revised: 03/14/2016] [Accepted: 04/25/2016] [Indexed: 12/15/2022]
Abstract
BACKGROUND Cyclic adenosine monophosphate (cAMP) response element-binding protein (CREB) is a member of the CREB/activation transcription factor 1 family that binds to an octanucleotide cAMP response element consensus sequence in promoters of target genes. METHODS CREB has been shown to regulate a variety of cellular functions, including cell proliferation, survival, apoptosis, differentiation, metabolism, hematopoiesis, immune response, and neuronal activity. CREB was also identified as a proto-oncogene involving in transformation by promoting abnormal proliferation and survival of myeloid cells. To understand the mechanism of CREB functions in leukemogenesis, the transcriptional profiles from a K562 cell line in which CREB was knocked down were analyzed with the use of bioinformatics methods. RESULTS DAVID Bioinformatics Resources and Gene Set Enrichment Analysis (GSEA) were performed to identify the targets that are regulated by CREB. A total of 692 genes were up-regulated and 364 genes down-regulated. The up-regulated genes were significantly enriched in pathways of cancer and chronic myeloid leukemia. GSEA analysis showed expression of Notch1 pathway to be decreased and hypoxia-inducible factor (HIF) pathway to be activated. CONCLUSIONS Our results identified candidate gene sets that could be used to guide research on discovering the mechanism of CREB during leukemogenesis.
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Affiliation(s)
- H Xia
- Department of Blood Transfusion, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China.
| | - Z Gong
- Department of Hematology, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China
| | - Y Lian
- Department of Central Laboratory, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China
| | - J Zhou
- Department of Cardiology, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China
| | - X Wang
- Department of Hematology, Dongtai People's Hospital of Jiangsu Province, Dongtai, Jiangsu, People's Republic of China
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Zhao LM, Jiang H, Hong K, Lin HC, Tang WH, Liu DF, Mao JM, Lian Y, Ma LL. [Outcome of treatment of Y chromosome AZFc microdeletion patients]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:607-611. [PMID: 29263498] [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: 06/07/2023]
Abstract
OBJECTIVE To discuss the treatment options for patients with azoospermia factor (AZF) c microdeletion on Y chromosome. METHODS One hundred and eighty three patients, who were diagnosed as AZFc microdeletion on Y chromosome in Peking University Third Hospital, were recruited in our study. In order to get better treatment option for this kind of patients, we retrospectively analyzed their clinic data including the treatment process and pregnancy outcome and found out the characteristics of their semen. RESULTS Among the 183 patients, sperms can be found in ejaculated semen in 105 patients (57.4%, 105/183). One hundred and three patients (98.1%, 103/105) were diagnosed as severe or extremely severe oligospermia. Regular medication was given to 98 patients, 6 patients (6.1%, 6/98) of which got natural pregnancy. The other 99 patients who have sperms in their semen received intracytoplasmic sperm injection (ICSI), 68 patients (68.7%, 68/99) of which got pregnancy. Seventy eight patients were diagnosed as azoospermia among all the 183 patients. Forty nine patients received testicular sperm aspiration (TESA), and 21 patients choose to receive micro-TESE directly. Among the 49 patients with TESA, sperms were retrieved in 17 patients (34.7%, 17/49), and sperms were not retrieved in 32 patients (65.3%, 32/49), of which 12 patients (37.5%, 12/32) gave up treatment and 20 patients (62.5%, 20/32) choose micro-TESE. Among the 41 patients who choose to receive micro-TESE, operation has been done on 19 patients, of which 11 patients (57.9%, 11/19) got sperms. Among the 11 patients, TESA has been done on 6 patients before micro-TESE, of which 4 patients (66.6%, 4/6) got sperms. ICSI has already been done on 7 azoospermia AZFc microdeletion patients who underwent micro-TESE, of which 4 patients (57.1%, 4/7) get pregnancy. CONCLUSION AZFc microdeletion patients who had sperms were always diagnosed as severe or extremely severe oligospermia. ICSI was their first choice instead of drug therapy. For AZFc microdeletion patients who were diagnosed as azoospermia, TESA was one of their choices, however, the success rate is not high. Micro-TESE is still possible to get sperms even after the failure of TESA. Therefore, we may choose micro-TESE instead of TESA in some azoospermia patients in order to reduce surgical trauma on patients.
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Affiliation(s)
- L M Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - K Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H C Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - W H Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - D F Liu
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - J M Mao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Y Lian
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
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Abstract
We explore different Skyrmion types in the lowest Landau level of graphene at a filling factor ν=±1. In addition to the formation of spin and valley pseudospin Skyrmions, we show that another type of spin-valley entangled Skyrmions can be stabilized in graphene due to an approximate SU(4) spin-valley symmetry that is affected by sublattice symmetry-breaking terms. These Skyrmions have a clear signature in spin-resolved density measurements on the lattice scale, and we discuss the expected patterns for the different Skyrmion types.
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Affiliation(s)
- Y Lian
- Laboratoire de Physique des Solides, Univ. Paris-Sud, Université Paris-Saclay, CNRS, UMR 8502, F-91405 Orsay Cedex, France
| | - A Rosch
- Institut für Theoretische Physik, Universität zu Köln, D-50937 Cologne, Germany
| | - M O Goerbig
- Laboratoire de Physique des Solides, Univ. Paris-Sud, Université Paris-Saclay, CNRS, UMR 8502, F-91405 Orsay Cedex, France
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20
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Zhao LM, Jiang H, Hong K, Lin HC, Tang WH, Liu DF, Mao JM, Lian Y, Ma LL. [Outcome of treatment of Y chromosome AZFc microdeletion patients]. Beijing Da Xue Xue Bao Yi Xue Ban 2016; 48:607-611. [PMID: 27538137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To discuss the treatment options for patients with azoospermia factor (AZF) c microdeletion on Y chromosome. METHODS One hundred and eighty three patients, who were diagnosed as AZFc microdeletion on Y chromosome in Peking University Third Hospital, were recruited in our study. In order to get better treatment option for this kind of patients, we retrospectively analyzed their clinic data including the treatment process and pregnancy outcome and found out the characteristics of their semen. RESULTS Among the 183 patients, sperms can be found in ejaculated semen in 105 patients (57.4%, 105/183). One hundred and three patients (98.1%, 103/105) were diagnosed as severe or extremely severe oligospermia. Regular medication was given to 98 patients, 6 patients (6.1%, 6/98) of which got natural pregnancy. The other 99 patients who have sperms in their semen received intracytoplasmic sperm injection (ICSI), 68 patients (68.7%, 68/99) of which got pregnancy. Seventy eight patients were diagnosed as azoospermia among all the 183 patients. Forty nine patients received testicular sperm aspiration (TESA), and 21 patients choose to receive micro-TESE directly. Among the 49 patients with TESA, sperms were retrieved in 17 patients (34.7%, 17/49), and sperms were not retrieved in 32 patients (65.3%, 32/49), of which 12 patients (37.5%, 12/32) gave up treatment and 20 patients (62.5%, 20/32) choose micro-TESE. Among the 41 patients who choose to receive micro-TESE, operation has been done on 19 patients, of which 11 patients (57.9%, 11/19) got sperms. Among the 11 patients, TESA has been done on 6 patients before micro-TESE, of which 4 patients (66.6%, 4/6) got sperms. ICSI has already been done on 7 azoospermia AZFc microdeletion patients who underwent micro-TESE, of which 4 patients (57.1%, 4/7) get pregnancy. CONCLUSION AZFc microdeletion patients who had sperms were always diagnosed as severe or extremely severe oligospermia. ICSI was their first choice instead of drug therapy. For AZFc microdeletion patients who were diagnosed as azoospermia, TESA was one of their choices, however, the success rate is not high. Micro-TESE is still possible to get sperms even after the failure of TESA. Therefore, we may choose micro-TESE instead of TESA in some azoospermia patients in order to reduce surgical trauma on patients.
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Affiliation(s)
- L M Zhao
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H Jiang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - K Hong
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - H C Lin
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - W H Tang
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - D F Liu
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - J M Mao
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - Y Lian
- Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China
| | - L L Ma
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
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Huang J, Lian Y, Zhao N, Liu P, Qiao J. Which is better for robertsonian translocation’s PGD cycles,blastomere fish or trophectoderm array? Fertil Steril 2014. [DOI: 10.1016/j.fertnstert.2014.07.580] [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: 11/28/2022]
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Abstract
This paper presents a novel electrocardiogram (ECG) processing technique for joint data compression and QRS detection in a wireless wearable sensor. The proposed algorithm is aimed at lowering the average complexity per task by sharing the computational load among multiple essential signal-processing tasks needed for wearable devices. The compression algorithm, which is based on an adaptive linear data prediction scheme, achieves a lossless bit compression ratio of 2.286x. The QRS detection algorithm achieves a sensitivity (Se) of 99.64% and positive prediction (+P) of 99.81% when tested with the MIT/BIH Arrhythmia database. Lower overall complexity and good performance renders the proposed technique suitable for wearable/ambulatory ECG devices.
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Ma K, Lian Y, Zhou S, Hu R, Xiong Y, Ting P, Xiong Y, Li X, Wang X. Microarray analysis of differentially expressed genes in preeclamptic and normal placental tissues. CLIN EXP OBSTET GYN 2014. [DOI: 10.12891/ceog16432014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Ma K, Lian Y, Zhou S, Hu R, Xiong Y, Ting P, Xiong Y, Li X, Wang X. Microarray analysis of differentially expressed genes in preeclamptic and normal placental tissues. CLIN EXP OBSTET GYN 2014; 41:261-271. [PMID: 24992773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE OF INVESTIGATION To detect the candidate genes for preeclampsia (PE). MATERIALS AND METHODS The gene expression profiles in preeclamptic and normal placental tissues were analyzed using cDNA microarray approach and the altered expression of important genes were further confirmed by real-time RT-PCR (reverse transcription polymerase chain reaction) technique. Total RNA was extracted from placental tissues of three cases with severe PE and from three cases with normal pregnancy. After scanning, differentially expressed genes were detected by software. RESULTS In two experiments (the fluorescent labels were exchanged), a total of 111 differentially expressed genes were detected. In placental tissue ofpreeclamptic pregnancy, 68 differentially expressed genes were up-regulated, and 44 differentially expressed genes were down-regulated. Of these genes, 16 highly differentially expressed genes were confirmed by real-time fluorescent quantitative RT-PCR, and the result showed that the ratio of gene expression differences was comparable to that detected by cDNA microarray. CONCLUSION The results of bioinformatic analysis showed that encoding products of differentially expressed genes were correlated to infiltration of placenta trophoblastic cells, immunomodulatory factors, pregnancy-associated plasma protein, signal transduction pathway, and cell adhesion. Further studies on the biological function and regulating mechanism of these genes will provide new clues for better understanding of etiology and pathogenesis of PE.
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Thornhill A, Dibouni ZA, Shah T, Wheat S, Teitelbaum M, Walker M, Bissonette F, Yuzpe AL, Leveille MC, Gysler M, Johnson M, Sprague A, Villena JG, Aparicio JL, Gimenez J, Ten J, Perez RB, Scholten I, Chambers GM, van Loendersloot L, van der Veen F, Repping S, Gianotten J, Hompes PGA, Ledger W, Mol BWJ, Dior UP, Laufer N, Granovsky-Grisaru S, Yagel S, Yaffe H, Gielchinsky Y, Nelen WLDM, Huppelschoten AG, Verkerk EW, Adang EMM, Kremer JAM, Davies M, Rumbold A, Marino J, Willson K, Moore V, Giles L, Shebl O, Ebner T, Tews G, Haas D, Oppelt P, Mayer RB, Sanges F, Maggiulli R, Albricci L, Romano S, Scarica C, Schimberni M, Giallonardo A, Vettraino G, Ubaldi F, Rienzi L, Figueira RCS, Braga DPAF, Setti AS, Iaconelli A, Borges E, Obrado EC, Barredo DR, Navarro LL, Rodriguez AV, Rague PNB, Lletget BC, Padro RT, Oron G, Sokal-Arnon T, Zeadna A, Son WY, Holzer H, Tulandi T, Nakamura Y, Hattori H, Sato Y, Kuchiki M, Sakamoto E, Doshida M, Toya M, Kyono K, Nakajo Y, Nakamura Y, Hirata K, Doshida M, Toya M, Kyono K, Xin ZM, Zhu H, Sun YP, Jin HX, Song WY, Rodriguez A, Poisot F, Rodriguez F, Coll O, Vassena R, Vernaeve V, Ye Y, Wang L, Wang N, Le F, Jin F, Zheng Y, Jin F, Lou Y, Le F, Pan PP, Wang N, Wang LY, Hu CX, Liu SY, Zheng YM, Li LJ, Liu XZ, Xu XR, Huang HF, Jin F, Lin SL, Li M, Lian Y, Chen LX, Liu P, Kawwass JF, Crawford S, Kissin DM, Session DR, Boulet S, Jamieson DJ. Quality and safety of ART therapies. Hum Reprod 2013. [DOI: 10.1093/humrep/det219] [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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Danielson ME, Beck TJ, Karlamangla AS, Greendale GA, Atkinson EJ, Lian Y, Khaled AS, Keaveny TM, Kopperdahl D, Ruppert K, Greenspan S, Vuga M, Cauley JA. A comparison of DXA and CT based methods for estimating the strength of the femoral neck in post-menopausal women. Osteoporos Int 2013; 24:1379-88. [PMID: 22810918 PMCID: PMC3606278 DOI: 10.1007/s00198-012-2066-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 06/06/2012] [Indexed: 01/10/2023]
Abstract
UNLABELLED The study goal was to compare simple two-dimensional (2D) analyses of bone strength using dual energy x-ray absorptiometry (DXA) data to more sophisticated three-dimensional (3D) finite element analyses using quantitative computed tomography (QCT) data. DXA- and QCT-derived femoral neck geometry, simple strength indices, and strength estimates were well correlated. INTRODUCTION Simple 2D analyses of bone strength can be done with DXA data and applied to large data sets. We compared 2D analyses to 3D finite element analyses (FEA) based on QCT data. METHODS Two hundred thirteen women participating in the Study of Women's Health Across the Nation (SWAN) received hip DXA and QCT scans. DXA BMD and femoral neck diameter and axis length were used to estimate geometry for composite bending (BSI) and compressive strength (CSI) indices. These and comparable indices computed by Hip Structure Analysis (HSA) on the same DXA data were compared to indices using QCT geometry. Simple 2D engineering simulations of a fall impacting on the greater trochanter were generated using HSA and QCT femoral neck geometry; these estimates were benchmarked to a 3D FEA of fall impact. RESULTS DXA-derived CSI and BSI computed from BMD and by HSA correlated well with each other (R=0.92 and 0.70) and with QCT-derived indices (R=0.83-0.85 and 0.65-0.72). The 2D strength estimate using HSA geometry correlated well with that from QCT (R=0.76) and with the 3D FEA estimate (R=0.56). CONCLUSIONS Femoral neck geometry computed by HSA from DXA data corresponds well enough to that from QCT for an analysis of load stress in the larger SWAN data set. Geometry derived from BMD data performed nearly as well. Proximal femur breaking strength estimated from 2D DXA data is not as well correlated with that derived by a 3D FEA using QCT data.
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Affiliation(s)
- M E Danielson
- Department of Epidemiology, University of Pittsburgh, 130 DeSoto St., Pittsburgh, PA 15261, USA.
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Wang Y, Deepu CJ, Lian Y. A computationally efficient QRS detection algorithm for wearable ECG sensors. Annu Int Conf IEEE Eng Med Biol Soc 2012; 2011:5641-4. [PMID: 22255619 DOI: 10.1109/iembs.2011.6091365] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
In this paper we present a novel Dual-Slope QRS detection algorithm with low computational complexity, suitable for wearable ECG devices. The Dual-Slope algorithm calculates the slopes on both sides of a peak in the ECG signal; And based on these slopes, three criterions are developed for simultaneously checking 1)Steepness 2)Shape and 3)Height of the signal, to locate the QRS complex. The algorithm, evaluated against MIT/BIH Arrhythmia Database, achieves a very high detection rate of 99.45%, a sensitivity of 99.82% and a positive prediction of 99.63%.
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Affiliation(s)
- Y Wang
- National University of Singapore. yichao@ nus.edu.sg
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Yu Y, Yan J, Li M, Yan L, Zhao Y, Lian Y, Li R, Liu P, Qiao J. Effects of combined epidermal growth factor, brain-derived neurotrophic factor and insulin-like growth factor-1 on human oocyte maturation and early fertilized and cloned embryo development. Hum Reprod 2012; 27:2146-59. [DOI: 10.1093/humrep/des099] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Deng J, Lian Y, Shen C, Chen Y, Zhang M, Wang YJ, Zhou HD. Adverse life event and risk of cognitive impairment: a 5-year prospective longitudinal study in Chongqing, China. Eur J Neurol 2011; 19:631-7. [DOI: 10.1111/j.1468-1331.2011.03599.x] [Citation(s) in RCA: 7] [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] [Indexed: 11/29/2022]
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Lian Y, Wang Y, Li H, Wu Y. e0615 The relationship between left ventricular diastolic function and arterial stiffness in coronary heart disease patients with diabetes. Heart 2010. [DOI: 10.1136/hrt.2010.208967.615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Li QZ, Zhou J, Lian Y, Zhang B, Branch VK, Carr-Johnson F, Karp DR, Mohan C, Wakeland EK, Olsen NJ. Interferon signature gene expression is correlated with autoantibody profiles in patients with incomplete lupus syndromes. Clin Exp Immunol 2009; 159:281-91. [PMID: 19968664 DOI: 10.1111/j.1365-2249.2009.04057.x] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Interferon (IFN) signature genes have been shown to be expressed highly in peripheral blood of patients with systemic lupus erythematosus (SLE), especially in the presence of active disease. However, the expression of this gene signature in individuals with incomplete forms of lupus and the pathogenic relationship between IFN signature genes and autoantibody production have not been explored fully. In the present study, we examined the gene expression and autoantibody profiles of patients diagnosed with incomplete lupus erythematosus (ILE) to determine correlations of the gene expression signature with autoantibody production. Gene expression analysis was carried out on the 24K Illumina Human Refseq-8 arrays using blood samples from 84 subjects, including patients with SLE (n = 27) or ILE (n = 24), first-degree relatives (FDR) of these patients (n = 22) and non-autoimmune control (NC) individuals (n = 11). Autoantibody expression was measured using standard immunoassays and autoantigen proteomic arrays. Up-regulation of a set of 63 IFN signature genes was seen in 83% of SLE patients and 50% of ILE patients. High levels of IFN gene expression in ILE and SLE showed significant correlations with the expression of a subset of IgG autoantibodies, including chromatin, dsDNA, dsRNA, U1snRNP, Ro/SSA, La/SSB, topoisomerase I and Scl 70, while low IFN levels were correlated with immunoglobulin (Ig)M autoreactivity. These studies suggest that in patients with ILE the IFN gene expression signature may identify a subset of these individuals who are at risk for disease progression. Furthermore, high levels of alpha IFN may promote autoantibody class-switch from IgM to the more pathogenic IgG class.
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Affiliation(s)
- Q-Z Li
- Department of Immunology and Division of Rheumatic Diseases, University of Texas Southwestern Medical Center, Dallas, TX 75390-8884, USA.
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Huang J, Chen Y, Lian Y, Qiao J, Gao X, Liu P. Does meiotic segregation behavior of spermatozoa predict the embryos karyotypes in male robertsonian translocations? Fertil Steril 2009. [DOI: 10.1016/j.fertnstert.2009.07.1434] [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: 11/28/2022]
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Abstract
INTRODUCTION Bone xenografts from pig to human appear to be an alternative to resolve the shortage of bone autologous and allografts. However, the major obstacle of pig-to-human xenotransplantation is the interaction between human natural anti-Gal antibody and the alpha-Gal epitope abundantly expressed on pig endothelium. It was important to investigate the expression of alpha-Gal epitopes in porcine bone tissue to look for an ideal method to remove the alpha-Gal epitopes. METHODS The cortical and trabecular bone were retrieved from five pigs. After the soft tissues and periosteum were removed, the blood and marrow cavity were cleaned with phosphate-buffered solution. All 5 mm x 5 mm x 5 mm samples were imbedded in paraffin and methyl methacrylate resin for histological sections. The mouse IgM M86 monoclonal antibody, which was highly specific for alpha-Gal epitopes, was used to document alpha-Gal epitope expression by immunostaining of tissues and immunofluorescence. RESULTS Gal-positive immunostaining and immunofluorescence were observed on the surface of osteocytes and Haversian canals. There was a significant difference in Gal expression between cortical and trabecular bone tissues. There was no Gal expression in the extracellular matrix of bone. CONCLUSIONS Major alpha-Gal epitopes were on the surface of osteocytes of porcine bone tissues. A method should be used to damage the osteocytes and eliminate the alpha-Gal epitopes to avoid the xenogenic rejection in xenotransplantation of porcine bone tissues.
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Affiliation(s)
- W Feng
- Orthopaedic Department, West China Hospital, Sichuan University, Guoxuexiang 37, Chengdu 610041, P.R. China
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Tai F, Broders H, Lian Y, Wang T, Sun R. Cellular activation patterns of the main olfactory bulb and accessory olfactory bulb following exposure to beddings soiled by same- or opposite-sex conspecifics in Mandarin voles (Microtus mandarinus). CAN J ZOOL 2006. [DOI: 10.1139/z06-104] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Using induction of Fos as an index, we studied cellular activation patterns in the accessory olfactory bulb (AOB) and main olfactory bulb (MOB) of Mandarin voles ( Microtus mandarinus (Milne-Edwards, 1871)) following their exposure to beddings soiled by different sexes. Male and female Mandarin voles that were exposed to beddings soiled by the opposite sex produced significantly more Fos-immunoreactive (Fos-ir) neurons in the anterior portion of the AOB and significantly fewer Fos-ir neurons in the posterior portion of the AOB than voles exposed to beddings soiled by the same sex. Furthermore, male and female Mandarin voles exposed to bedding soiled by different sex produced different numbers of Fos-ir cells in MOB. Mandarin voles exposed to beddings soiled by the opposite sex produced significantly more Fos-ir neurons in MOB than voles exposed to beddings soiled by the same sex. Our results establish that Mandarin voles of each sex showed different cellular activation patterns in AOB and MOB following exposures to sex-specific beddings. We suggest that both AOB and MOB were involved in sexual activities induced by chemosensory signals.
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Affiliation(s)
- F.D. Tai
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
| | - H.G. Broders
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
| | - Y. Lian
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
| | - T.Z. Wang
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
| | - R.Y. Sun
- College of Life Science, Shaanxi Normal University, Xi’an 710062, China
- Department of Biology, Saint Mary's University, Halifax, NS B3H 3C3, Canada
- College of Life Science, East China Normal University, Shanghai 200062, China
- College of Life Science, South China Normal University, Guangzhou 510631, China
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Abstract
The authors followed 5,437 people aged 55 years and older with normal baseline Mini-Mental State Examination score annually for 5 years. The mean incidence of cognitive impairment was 2.3% per year. Cognitive activities in both the individual item (playing board games and reading) and the composite measure were associated with the reduced risk of cognitive impairment, while watching television was associated with an increased risk of cognitive impairment.
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Affiliation(s)
- J Y J Wang
- Department of Neurology, Daping Hospital, Third Military Medical University, Chongqing, China
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Abstract
BACKGROUND Vitrification is assumed to be a promising method to cryopreserve human oocytes but still needs optimization. In this study, rabbit oocytes (fertilized by ICSI) were vitrified with cryoloops, and the effect of three different cryopreservation protocols on spindle configuration and embryo quality was assessed. METHODS Metaphase II rabbit oocytes were randomly assigned to one of four groups: (i) control; (ii) E40 [40% ethylene glycol (EG)]; (iii) ED20 [20% EG + 20% dimethylsulphoxide (DMSO)]; and (iv) ED20 + M (20% EG + 20% DMSO + vitrification machine). After warming, one part of each group was fertilized by ICSI to examine the fertilization and embryo cleavage ability, and the others were immunostained for tubulin and chromatin before visualization using confocal microscopy. RESULTS The survival rates after warming were 79.1, 83.1 and 82.3%, respectively. In protocols E40 and ED20, the spindles were severely injured and the embryo quality not good compared with those in the ED20 + M group. CONCLUSIONS The fastest cooling rate in combination with EG and DMSO as cryoprotectants had the fewest adverse effects on the spindle configuration of rabbit oocytes and embryo development.
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Affiliation(s)
- X Y Cai
- Department of Obstetrics and Gynaecology, Third Hospital, Peking University, Peking, China 100083
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Zheng D, Fong J, Shao Z, Lian Y, Wu C. Thermal oxide based silica ridge waveguide. Opt Express 2004; 12:1753-1758. [PMID: 19475002 DOI: 10.1364/opex.12.001753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A silica planar waveguide structure, where a ridge waveguide resides on a vacuum gap, was invented. The silica layer, which was fabricated through thermal oxidation at 1150 masculineC, had an excellent optical index uniformity on the order of 3x10(-5) @1550 nm, and a thickness uniformity of 10 nm at a thickness of 10 microm. Straight waveguide with low insertion loss was demonstrated. Improved thermal efficiency of this structure to cause phase change was discussed in comparison to the conventional channel waveguide structure. Finally, the limitation of this technology to make complex device structures was also explored.
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Okazaki T, Suenaga K, Lian Y, Gu Z, Shinohara H. Intrafullerene electron transfers in Sm-containing metallofullerenes: Sm@C2n (74 < or = 2n < or = 84). J Mol Graph Model 2001; 19:244-51. [PMID: 11391876 DOI: 10.1016/s1093-3263(00)00093-0] [Citation(s) in RCA: 35] [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] [Indexed: 11/19/2022]
Abstract
The electronic properties of Sm-containing metallofullerenes, Sm@C74, Sm@C76 (I, II), Sm@C78, Sm@C80, Sm@C82 (I, II, III) and Sm@C84 (I, II, III), are characterized by UV-Vis-NIR absorption spectroscopy and electron energy-loss spectroscopy (EELS). The UV-Vis-NIR absorption spectra of Sm@C74, Sm@C80, Sm@C82 (I, II, III) and Sm@C84 (I, II) are quite similar to those of the corresponding Ca, Sr, Ba, Eu, Tm, Yb-based metallofullerenes. In contrast, the absorption spectra of Sm@C76 (I, II), Sm@C78 and Sm@C84(III) show a novel feature: the onset for Sm@C78 is observed approximately 2600 nm, which corresponds to a small band gap (approximately 0.5 eV). Furthermore, the oxidation states of Sm atom in the various fullerene cages are investigated by EELS, which reveals that the Sm atom takes +2 oxidation state in the fullerene cages. A probable rationale for the tendency to have the Sm2+ state is presented based on a simple thermochemical cycle model.
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Affiliation(s)
- T Okazaki
- Department of Chemistry, Nagoya University, Nagoya, Japan
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Abstract
The present study was designed to evaluate the feasibility of germinal vesicle (GV) transfer in rabbits and mice. The GV oocytes were collected from ovaries and cultured in 20 microg/mL 3-isobutyl-1-methylxanthin (IBMX) in TCM199 medium, which caused oocytes to shrink, enlarging the perivitelline space to facilitate the GV removal and transfer. Pairs of GV-cytoplast complexes were fused with electric pulses, and the fused, reconstructed oocytes were cultured in TCM199 for 24 h. Results are as follows: 1) The exposure time of rabbit GV oocytes to IBMX medium affected the success of GV removal. For oocytes cultured for 2 and 3 h in IBMX medium, removed rates were 56% and 44, respectively, significantly higher (P < 0.05) than removal rates of GV oocytes cultured for 1 and 4 h (27% and 27%, respectively); 2) There was no significant difference (P > 0.1) in fusion and maturation rates of rabbit reconstructed oocytes collected at 72 and 84 h after initiation of FSH injection to donors; 3) eCG in the maturation media improved development of rabbit-to-rabbit GV transferred oocytes but had no positive effect on mouse-to-rabbit GV transferred oocytes; 4) When mouse GV-karyoplasts were injected into enucleated rabbit oocytes, fusion rates of GV-karyoplasts measuring 40- to 50-microm and 80- to 90-microm in diameters obtained were 84% and 93%, respectively. The rates were significantly higher (P < 0.05) than fusion rates after transferring GV-karyoplasts measuring 30- to 35-microm in diameter (63%). The maturation rate (89%) of reconstructed oocytes composed of 80- to 90-microm mouse GV-karyoplasts and rabbit GV-enucleated cytoplasts was higher than that seen for oocytes composed of 40- to 50-microm (77%, P<0.05) or 30- to 35-microm (59%, P<0.01) mouse karyoplasts. Thirty-five of the 63 (56%) mature mouse-to-rabbit reconstructed oocytes had the normal complement of 20 chromosomes.
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Affiliation(s)
- G P Li
- State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing
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Barnett SW, Lu S, Srivastava I, Cherpelis S, Gettie A, Blanchard J, Wang S, Mboudjeka I, Leung L, Lian Y, Fong A, Buckner C, Ly A, Hilt S, Ulmer J, Wild CT, Mascola JR, Stamatatos L. The ability of an oligomeric human immunodeficiency virus type 1 (HIV-1) envelope antigen to elicit neutralizing antibodies against primary HIV-1 isolates is improved following partial deletion of the second hypervariable region. J Virol 2001; 75:5526-40. [PMID: 11356960 PMCID: PMC114265 DOI: 10.1128/jvi.75.12.5526-5540.2001] [Citation(s) in RCA: 188] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Partial deletion of the second hypervariable region from the envelope of the primary-like SF162 virus increases the exposure of certain neutralization epitopes and renders the virus, SF162DeltaV2, highly susceptible to neutralization by clade B and non-clade B human immunodeficiency virus (HIV-positive) sera (L. Stamatatos and C. Cheng-Mayer, J. Virol. 78:7840-7845, 1998). This observation led us to propose that the modified, SF162DeltaV2-derived envelope may elicit higher titers of cross-reactive neutralizing antibodies than the unmodified SF162-derived envelope. To test this hypothesis, we immunized rabbits and rhesus macaques with the gp140 form of these two envelopes. In rabbits, both immunogens elicited similar titers of binding antibodies but the modified immunogen was more effective in eliciting neutralizing antibodies, not only against the SF162DeltaV2 and SF162 viruses but also against several heterologous primary HIV type 1 (HIV-1) isolates. In rhesus macaques both immunogens elicited potent binding antibodies, but again the modified immunogen was more effective in eliciting the generation of neutralizing antibodies against the SF162DeltaV2 and SF162 viruses. Antibodies capable of neutralizing several, but not all, heterologous primary HIV-1 isolates tested were elicited only in macaques immunized with the modified immunogen. The efficiency of neutralization of these heterologous isolates was lower than that recorded against the SF162 isolate. Our results strongly suggest that although soluble oligomeric envelope subunit vaccines may elicit neutralizing antibody responses against heterologous primary HIV-1 isolates, these responses will not be broad and potent unless specific modifications are introduced to increase the exposure of conserved neutralization epitopes.
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Affiliation(s)
- S W Barnett
- Chiron Corporation, Emeryville, California 94608-2916, USA
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Lian Y, Tan J, Deng Z. [Experimental study of shuangcao granule no. 1 on duck hepatitis B virus in ducklings]. Zhongguo Zhong Xi Yi Jie He Za Zhi 2000; 20:530-2. [PMID: 11789214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Abstract
OBJECTIVE To study the in vivo anti-viral effect of a Chinese drug, composite Shuangcao Anti-Jaundice Granule No. 1(SCG-1), on duck hepatitis B virus (DHBV). METHODS Guangzhou brown spot ducklings infected with DHBV were used as the hepatitis B animal model, for which, 1-day old ducklings were infected with DHBV. Positive DHBV-DNA in ducklings sera were detected 13 days after the infection, and then SCG-1 was given for 14 days and DHBV-DNA was detected by dot-blot hybridization test. RESULTS After medicated with SCG-1 [10 g/(kg.day) and 5 g/(kg.day)] 7 days and 14 days, optic density value (OD value) of DHBV-DNA in ducklings' sera were obviously lower than that before treatment, there was significant difference. But rebound phenomenon appeared in both groups 3 days after stopping medication (P < 0.05). CONCLUSION SCG-1 could inhibit the replication of DHBV-DNA in Guangzhou ducklings.
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Affiliation(s)
- Y Lian
- Guangzhou Municipal Eighth People's Hospital, Institute of Infectious Diseases, Guangzhou (510060)
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Lian Y, Deng Z, Li Y, Lei C, Tang X. Measurement and significance of oblique occipital frontal diameter and superior inferior diameter of hepatic left lobulus in patients with hepatic fibrosis. Zhonghua Gan Zang Bing Za Zhi 2000; 8:156-7. [PMID: 10880164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
OBJECTIVE To study the changes and significance of oblique occipital frontal diameter (OFD) and superior inferior diameter (SID) of the hepatic left lobulus in different stages of hepatic fibrosis, and to evaluate the value of corresponding serological examination in the non-invasive diagnosis to hepatic fibrosis and cirrhosis. METHODS Seventy-two patients with chronic hepatitis were confirmed by biopsy. OFD and SID of the hepatic left lobulus were measured by type B ultrasonic flaw detector. Serum levels of hyaluronic acid (HA), laminin (LN), type IV collagen (CIV) and type III procollagen (PCIII) were measured by radioimmunoassay. RESULTS SID of the hepatic left lobulus in S(4) stage was 5.7cmA1.5cm, significantly shorter than the values of 7.7cmA1.4 cm in S(0) stage. OFD of the hepatic left lobulus was longer in S(4) stage than S(0) stage, but the difference didn't reach statistical significance. Serum levels of HA, LN,CIV, and PCIII elevated as the increase of fibrosis. HA and PCIII increased to 273.4mug/LA131.3mug/L and 167. 4mug/LA48.1mug/L in S3 stage from 66.2mug/LA35.0mug/L and 103. 4mug/LA23.8mug/L in S(0) stage. CONCLUSION Changes in of SID and OFD of the hepatic left lobulus and serum levels of HA and PCIII may indicate indirectly mid-late hepatic fibrosis or early cirrhosis.
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Affiliation(s)
- Y Lian
- Institute of Infectious Diseases, Guangzhou 8th People's Hospital, Guangzhou 510060, China
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Lian Y, Wu W, Shi Y. [Preliminary study on relationship between different viral pathogenesis and disease prognosis in patients with severe viral hepatitis]. Zhonghua Shi Yan He Lin Chuang Bing Du Xue Za Zhi 1999; 13:355-7. [PMID: 12759976] [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: 03/02/2023]
Abstract
OBJECTIVE To study the relationship between different viral pathogenesis and disease prognosis in severe viral hepatitis. METHODS Different viral pathogenesis of 87 dead and live cases with severe viral hepatitis were compared. RESULTS Total mortality of 87 patients with severe hepatitis was 74.71% (65/87), total prevalence of HBV infection alone in these patients was 41.38% (36/87). The detection rates of HBV infection alone and superinfection of different hepatitis viruses in 68 patients with chronic severe hepatitis (CSH) were 41.18% (28/68) and 58.82% (40/68) respectively. The prevalences of superinfection of HBV and HEV or HAV and superinfection of HBV and CMV in patients with CSH were 27.94% (19/68) and 10.29 (7/68) respectively. The mortality of superinfection of HBV and CMV (85.71%) was the highest, followed by HBV infection alone (77.78%). In addition, the prevalence and mortality of HBV infection alone in 19 patients with acute or subacute severe hepatitis was the highest. CONCLUSION HBV, HEV or HAV infection alone was the main viral pathogenesis of severe hepatitis. Superinfection of different viruses in patients with CSH was the most common viral infection type. An unpromising prognosis of superinfection of HBV and CMV in CSH is noted.
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Affiliation(s)
- Y Lian
- Institute of Infectious Diseases, Guangzhou 8th People's Hospital, Guangzhou 510060
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Abstract
The catalytic center of the RNA from the negative strand of the satellite RNA of chicory yellow mottle virus type 1 (sCYMV1) is in the hairpin ribozyme family, has catalytic activity, and cleaves substrates before a preferred GUA sequence. This is different from that of the satellite RNA from the negative strand of tobacco ringspot virus (sTRSV) which prefers a GUC sequence at the site of cleavage. The sCYMV1 hairpin ribozyme has now been developed for cleaving heterologous RNA substrates. When helix 1 was extended from the native 5 bp to 6 bp with a newly added A:U base pair, catalytic activity increased three-fold. The preferred sequence for the substrate loop was the native A*GUA sequence where * is the site of cleavage. When each nucleotide in this sequence was changed to each of the other three nucleotides, catalytic activity decreased 66-100%. RNA targets, containing this A*GUA sequence, were located in both human papillomavirus and HIV-1. Ribozymes were developed which efficiently cleaved these targets in vitro. These results identify a new class of hairpin ribozymes capable of cleaving substrates before a preferred GUA sequence rather than the GUC preferred by the sTRSV hairpin ribozyme. This expands the repertoire of target sites available for gene therapy using the hairpin ribozyme.
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Affiliation(s)
- Y Lian
- Department of Biological Sciences, Northern Illinois University, DeKalb, IL 60115, USA
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Su Z, Zeng Y, Zhou H, Wai J, Lian Y, Lu X, Liu L. [Preliminary study on chemical changes in the decocting process of radix et rhizoma Rhei]. Zhongguo Zhong Yao Za Zhi 1999; 24:291-2, 318. [PMID: 12205885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Abstract
OBJECTIVE To understand the chemical changes in the decocting process of Radix et Rhizoma Rhei. METHOD Comparing the contents of many kinds of anthraquinones in the crude drug, decoction and drug sediments of Radix et Rhizoma Rhei by HPLC. RESULT The contents of combined and free anthraquinones changed after the crude drug was decocted. CONCLUSION These changes may be related to the hydrolysis of combined anthraquinones, the decomposition of free anthraquinones, and the inter-transition among anthraquinones.
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Affiliation(s)
- Z Su
- Guangzhou University of Traditional Chinese Medicine, Guangzhou 510407
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Yuan H, Zhang J, Feng X, Lian Y. Observation on electromyogram changes in 93 cases of peripheral facial paralysis treated by point-through-point acupuncture. J TRADIT CHIN MED 1997; 17:275-7. [PMID: 10437210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Bioelectricity of the affected muscles at acute stage, recovery stage and sequel state in 93 cases of peripheral facial paralysis was observed with EMG. Pathological potential or motor potential was found to be reduced to varying degrees in all the affected muscles. After treatment by point-through-point acupuncture, myodynamia recovered fairly rapidly, EMG showed obvious changes, pathological potential decreased, and the normal motor unit potential increased remarkably. Comparative analysis of EMG before and after acupuncture indicated that point-through-point acupuncture had an obvious therapeutic effect on the disease. It was also very significant that EMG was used in diagnosing various stages of peripheral facial paralysis, evaluation of prognosis and guidance in clinical treatment.
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Affiliation(s)
- H Yuan
- First Affiliated Hospital, Tianjin College of Traditional Chinese Medicine
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Huang X, Lian Y, Wang Q. [Experimental in vivo passage of H2 strain of live attenuated vaccine of hepatitis A in common marmosets]. Zhonghua Yu Fang Yi Xue Za Zhi 1997; 31:260-2. [PMID: 9812599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Common marmosets with negative serum antibodies against hepatitis A virus (anti-HAV) and normal liver functions were used for the tests of passage of H2 vaccine strain of HAV to explore its residual virulence after attenuation and possibility of its reversion. Common marmosets were inoculated with attenuated live vaccine, and fecal suspension and/or proliferative liquid in tissue culture of the progeny of vaccine HAV excreted from their feces were passaged in common marmosets. Result of three serial passages in vivo indicated that there was no significant difference in serum anti-HAV titer, and no or low-level changes in activities of liver enzymes, no pathological changes in liver tissues observed, and detectable but minimal HAV was shed in stool of the all animals.
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Affiliation(s)
- X Huang
- Institute of Medical Biology, Chinese Academy of Medical Sciences, Peking Union Medical College, Kunming
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Ju J, Lian Y. Dr. Zhou Shizhang's experience in treating aphthae. J TRADIT CHIN MED 1997; 17:106-8. [PMID: 10437177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Affiliation(s)
- J Ju
- Yantai Liuhuangding Hospital, Shandong Province
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DeYoung M, Siwkowski AM, Lian Y, Hampel A. Catalytic properties of hairpin ribozymes derived from Chicory yellow mottle virus and arabis mosaic virus satellite RNAs. Biochemistry 1995; 34:15785-91. [PMID: 7495810 DOI: 10.1021/bi00048a024] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Regions of the negative strands of the satellite RNAs of chicory yellow mottle virus (sCYMV1) and arabis mosaic virus (sArMV) have similarity in sequence and predicted secondary structure compared to the tobacco ringspot virus satellite RNA (sTRSV) hairpin ribozyme, suggesting that they may also be catalytic RNAs of a similar type. Our experiments show that the hairpin ribozyme-like sequences derived from sCYMV1 and sArMV have high phosphodiesterase activity. The Kcat values determined are similar to that of the highly active native sTRSV hairpin ribozyme under the same conditions, although the Km values are much higher. The Km of the sArMV ribozyme was reduced 3-fold, with no change in kcat, by extending substrate hybridization in helix 2. Additionally, the three hairpin ribozymes prefer different GUX sequences on the immediate 3'-side of the cleavage site. The sTRSV hairpin ribozyme cleaves GUX substrates with catalytic efficiencies in the relative order GUC >> GUU > GUG = GUA. The sCYMV1 ribozyme cleaves GUA > GUC, GUG, GUU. The sArMV ribozyme prefers GUA > GUG > GUU > GUC. The functional domain, regulating substrate selection at this position, must reside in the nucleotides that vary between the ribozyme--substrate complexes. The sTRSV ribozyme is most efficient at cleaving GUC complexes, while the sCYMV1 and sArMV ribozymes are most efficient for cleaving GUA-containing sequences.
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Affiliation(s)
- M DeYoung
- Department of Biological Sciences, Northern Illinois University, DeKalb 60115, USA
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