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Gao Z, Lv S, Ran X, Wang Y, Xia M, Wang J, Qiu M, Wei Y, Shao Z, Zhao Z, Zhang Y, Zhou X, Yu Y. Influencing factors of corticomuscular coherence in stroke patients. Front Hum Neurosci 2024; 18:1354332. [PMID: 38562230 PMCID: PMC10982423 DOI: 10.3389/fnhum.2024.1354332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/05/2024] [Indexed: 04/04/2024] Open
Abstract
Stroke, also known as cerebrovascular accident, is an acute cerebrovascular disease with a high incidence, disability rate, and mortality. It can disrupt the interaction between the cerebral cortex and external muscles. Corticomuscular coherence (CMC) is a common and useful method for studying how the cerebral cortex controls muscle activity. CMC can expose functional connections between the cortex and muscle, reflecting the information flow in the motor system. Afferent feedback related to CMC can reveal these functional connections. This paper aims to investigate the factors influencing CMC in stroke patients and provide a comprehensive summary and analysis of the current research in this area. This paper begins by discussing the impact of stroke and the significance of CMC in stroke patients. It then proceeds to elaborate on the mechanism of CMC and its defining formula. Next, the impacts of various factors on CMC in stroke patients were discussed individually. Lastly, this paper addresses current challenges and future prospects for CMC.
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Affiliation(s)
- Zhixian Gao
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Shiyang Lv
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Xiangying Ran
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Yuxi Wang
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Mengsheng Xia
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Junming Wang
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Mengyue Qiu
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Yinping Wei
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Zhenpeng Shao
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Zongya Zhao
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Yehong Zhang
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
| | - Xuezhi Zhou
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
| | - Yi Yu
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
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Wang C, Wang C, Ren Y, Zhang R, Ai L, Wu Y, Ran X, Wang M, Hu H, Shen J, Zhao Z, Yang Y, Ren W, Yu Y. Multi feature fusion network for schizophrenia classification and abnormal brain network recognition. Brain Res Bull 2024; 206:110848. [PMID: 38104673 DOI: 10.1016/j.brainresbull.2023.110848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 12/06/2023] [Accepted: 12/13/2023] [Indexed: 12/19/2023]
Abstract
Schizophrenia classification and abnormal brain network recognition have an important research significance. Researchers have proposed many classification methods based on machine learning and deep learning. However, fewer studies utilized the advantages of complementary information from multi feature to learn the best representation of schizophrenia. In this study, we proposed a multi-feature fusion network (MFFN) using functional network connectivity (FNC) and time courses (TC) to distinguish schizophrenia patients from healthy controls. DNN backbone was adopted to learn the feature map of functional network connectivity, C-RNNAM backbone was designed to learn the feature map of time courses, and Deep SHAP was applied to obtain the most discriminative brain networks. We proved the effectiveness of this proposed model using the combining two public datasets and evaluated this model quantitatively using the evaluation indexes. The results showed that the functional network connectivity generated by independent component analysis has advantage in schizophrenia classification by comparing static and dynamic functional connections. This method obtained the best classification accuracy (ACC=87.30%, SPE=89.28%, SEN=85.71%, F1 =88.23%, and AUC=0.9081), and it demonstrated the superiority of this proposed model by comparing state-of-the-art methods. Ablation experiment also demonstrated that multi feature fusion and attention module can improve classification accuracy. The most discriminative brain networks showed that default mode network and visual network of schizophrenia patients have aberrant connections in brain networks. In conclusion, this method can identify schizophrenia effectively and visualize the abnormal brain network, and it has important clinical application value.
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Affiliation(s)
- Chang Wang
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China; Xinxiang Engineering Technology Research Center of Intelligent Medical Imaging Diagnosis, Xinxiang, China
| | - Chen Wang
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China; Xinxiang Engineering Technology Research Center of Intelligent Medical Imaging Diagnosis, Xinxiang, China
| | - Yaning Ren
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China; Xinxiang Engineering Technology Research Center of Intelligent Medical Imaging Diagnosis, Xinxiang, China
| | - Rui Zhang
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China; Xinxiang Engineering Technology Research Center of Intelligent Medical Imaging Diagnosis, Xinxiang, China
| | - Lunpu Ai
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
| | - Yang Wu
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China; Xinxiang Engineering Technology Research Center of Intelligent Medical Imaging Diagnosis, Xinxiang, China
| | - Xiangying Ran
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
| | - Mengke Wang
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
| | - Heshun Hu
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
| | - Jiefen Shen
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China; Xinxiang Engineering Technology Research Center of Intelligent Medical Imaging Diagnosis, Xinxiang, China
| | - Zongya Zhao
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
| | - Yongfeng Yang
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China
| | - Wenjie Ren
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
| | - Yi Yu
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China; Henan Key Laboratory of Biological Psychiatry, Xinxiang, China; School of Medical Engineering, Xinxiang Medical University, Xinxiang, China; Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China.
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Zhao Z, Ran X, Lv S, Wang J, Qiu M, Wang C, Xu Y, Guo X, Gao Z, Mu J, Yu Y. Causal link between prefrontal cortex and EEG microstates: evidence from patients with prefrontal lesion. Front Neurosci 2023; 17:1306120. [PMID: 38161794 PMCID: PMC10757643 DOI: 10.3389/fnins.2023.1306120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 11/24/2023] [Indexed: 01/03/2024] Open
Abstract
Introduction At present, elucidating the cortical origin of EEG microstates is a research hotspot in the field of EEG. Previous studies have suggested that the prefrontal cortex is closely related to EEG microstate C and D, but whether there is a causal link between the prefrontal cortex and microstate C or D remains unclear. Methods In this study, pretrial EEG data were collected from ten patients with prefrontal lesions (mainly located in inferior and middle frontal gyrus) and fourteen matched healthy controls, and EEG microstate analysis was applied. Results Our results showed that four classical EEG microstate topographies were obtained in both groups, but microstate C topography in patient group was obviously abnormal. Compared to healthy controls, the average coverage and occurrence of microstate C significantly reduced. In addition, the transition probability from microstate A to C and from microstate B to C in patient group was significantly lower than those of healthy controls. Discussion The above results demonstrated that the damage of prefrontal cortex especially inferior and middle frontal gyrus could lead to abnormalities in the spatial distribution and temporal dynamics of microstate C not D, showing that there is a causal link between the inferior and middle frontal gyrus and the microstate C. The significance of our findings lies in providing new evidence for elucidating the cortical origin of microstate C.
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Affiliation(s)
- Zongya Zhao
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
- The First Affiliated Hospital of Xinxiang Medical University, Weihui, China
| | - Xiangying Ran
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
| | - Shiyang Lv
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
| | - Junming Wang
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
| | - Mengyue Qiu
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
| | - Chang Wang
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
| | - Yongtao Xu
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
| | - Xiao Guo
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
| | - Zhixian Gao
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
| | - Junlin Mu
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Yi Yu
- School of Medical Engineering, Xinxiang Medical University, Xinxiang, China
- Engineering Technology Research Center of Neurosense and Control of Henan Province, Xinxiang, China
- Henan International Joint Laboratory of Neural Information Analysis and Drug Intelligent Design, Xinxiang, China
- Henan Engineering Research Center of Medical VR Intelligent Sensing Feedback, Xinxiang, China
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Ran X, Zhang X, Teng M, Alawi WB, Nahum S, He H, Lok BH. The Effect of PARP Inhibitor Radiosensitization on the mRNA Translational Regulation of T Cell Chemokines. Int J Radiat Oncol Biol Phys 2023; 117:S71-S72. [PMID: 37784561 DOI: 10.1016/j.ijrobp.2023.06.380] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Immunotherapy has modestly improved survival for small cell lung cancer (SCLC) patients. Low response rate and rapid disease progression remain an intractable challenge. One of the factors that contribute to immunotherapy resistance is the lack of cytotoxic T cell infiltration. The expression of chemoattractant cytokines, like CCL5 and CXCL10, are essential for T cell infiltration. The control of chemokine expression is not fully understood, but both transcriptional and translational control pathways could play a major role. Previous studies have shown a correlation between DNA damage and chemokine expression and that PARP inhibitors (PARPi) are radiosensitizers for SCLC that increases DNA damage. The objectives of this study were to define this potential PARPi immunogenic radiosensitizing relationship. MATERIALS/METHODS We identified doses of olaparib+ radiation treatment (RT) that conferred radiosensitization in SCLC cell-lines by cell viability and/or clonogenic assays. Olaparib+RT induced CCL5 and CXCL10 mRNA expression was measured by qPCR across SCLC cell-lines. Protein level of chemokines was assessed by immunoblotting. SBC5 cells were treated with olaparib+RT and submitted for RNA sequencing analysis. Genes with adjusted p value<0.05 were considered significant. Protein level changes and target gene knock-out (KO) were confirmed by immunoblotting. Chemokine CXCL10 mRNA and protein level in wildtype (WT) and KO cells were measured by qPCR and western blot, respectively. A mRNA decay assay and dual-luciferase reporter assay was used to identify the region of CXCL10 mRNA that confers mRNA stability control. In vivo anti-tumor efficacy and tumor T cell infiltration studies were done in B6129F mice bearing KP1 tumors. And the T cell infiltration was measured by immune profiling. RESULTS In vitro, olaparib+RT significantly increased CXCL10 mRNA in all four SCLC subtype cell-lines in comparison to vehicle control. Consistently, the increase of CXCL10 protein levels (3-fold) was observed in SBC5 cells. By RNA-Seq, a top-ranking translational repressor was EIF4E2 (4EHP) mRNA. The downregulation of EIF4E2 protein by olaparib+RT was validated in four SCLC subtypes by western blot. EIF4E2 KO in HEK293 and SBC5 cells increased CXCL10 mRNA and protein level. By mRNA decay assay and western blot, the absence of EIF4E2 stabilized CXCL10 mRNA and increased CXCL10 protein levels. The dual-luciferase assay demonstrated EIF4E2 destabilizes CXCL10 mRNA via the 3'UTR of CXCL10. In vivo, immune profiling showed olaparib+RT significantly increased the total T cell and CD8+ T cell infiltration. Finally, anti-PD-L1 inhibition potentiated olaparib + IR to improve tumor control in KP1 allograft. CONCLUSION Our study demonstrated olaparib + RT increases CXCL10 protein levels through downregulating EIF4E2 to subsequently increase T cell infiltration. Olaparib + RT enhanced anti-PD-L1 immunotherapy efficacy and has therapeutic potential as an immunogenic radiosensitizer.
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Affiliation(s)
- X Ran
- University Health Network, Toronto, ON, Canada
| | - X Zhang
- Department of Biochemistry, McGill University, Montreal, QC, Canada
| | - M Teng
- University Health Network, Toronto, ON, Canada
| | - W B Alawi
- University Health Network, Toronto, ON, Canada
| | - S Nahum
- Department of Biochemistry, McGill University, Montreal, ON, Canada
| | - H He
- University of Toronto, Toronto, ON, Canada
| | - B H Lok
- Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
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Zhou S, Luo F, Gu M, Lu X, Xu Y, Wu R, Xiong J, Ran X. Biopsy-tract haemocoagulase injection reduces major complications after CT-guided percutaneous transthoracic lung biopsy. Clin Radiol 2022; 77:e673-e679. [PMID: 35788268 DOI: 10.1016/j.crad.2022.05.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/11/2022] [Accepted: 05/20/2022] [Indexed: 11/03/2022]
Abstract
AIM To determine whether the injection of haemocoagulase into the biopsy tract can reduce pneumothorax and pulmonary haemorrhage after computed tomography (CT)-guided percutaneous transthoracic lung biopsy (PTLB). MATERIALS AND METHODS A retrospective study was performed involving patients with undiagnosed pulmonary lesions scheduled for PTLB between January 2020 and March 2021. Patients were assigned to the haemocoagulase group or the non-haemocoagulase group. After CT-guided biopsies were performed with a 17 G coaxial system, patients in the haemocoagulase group received a haemocoagulase injection (0.2-0.5 units) in the biopsy tract as the sheath was withdrawn. Postoperative image studies were performed to evaluate complications, including pneumothorax and pulmonary haemorrhage. Factors, including the patient's position, lesion location, and pathological results, were evaluated to determine their associations with the complications. RESULTS A total of 100 patients were included, with 44 men and a mean age of 53 years old. The overall incidences of pneumothorax and pulmonary haemorrhage were 15% and 13%, respectively. The incidences of pneumothorax and pulmonary haemorrhage were statistically significantly lower in the haemocoagulase group (8% and 6%, respectively) than in the non-haemocoagulase group (22% and 20%, respectively; p=0.04 and 0.03, respectively). There was no statistically significant difference in haemoptysis between the haemocoagulase (6%) and non-haemocoagulase (2%) groups (p=0.23). There were also no statistically significant associations of pneumothorax or pulmonary haemorrhage with the patients' positions, lesion location, or pathological results. CONCLUSION Biopsy tract haemocoagulase injection reduced the incidences of postoperative pneumothorax and pulmonary haemorrhage after PTLB.
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Affiliation(s)
- S Zhou
- Department of Radiology, Chongqing General Hospital, Chongqing 400014, China
| | - F Luo
- Department of Gastroenterology, The Chongqing Traditional Chinese Medicine Hospital, Chongqing Academy of Traditional Chinese Medicine, Chongqing 400021, China
| | - M Gu
- Department of Radiology, Chongqing General Hospital, Chongqing 400014, China
| | - X Lu
- Department of Radiology, Chongqing General Hospital, Chongqing 400014, China
| | - Y Xu
- Department of Radiology, Chongqing General Hospital, Chongqing 400014, China
| | - R Wu
- Department of Radiology, Chongqing General Hospital, Chongqing 400014, China
| | - J Xiong
- Institute of Higher Education, Chongqing Medical and Pharmaceutical College, Chongqing 401334, China
| | - X Ran
- Department of Radiology, Chongqing General Hospital, Chongqing 400014, China.
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Zhang D, Ran X, Zhang Y, Zhang H. Study of cooling strategy for pressure vessel in pool research reactor at accident situation. KERNTECHNIK 2021. [DOI: 10.3139/124.190038] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Pressure vessel in pool layout is usually used in high power and middle pressure research reactor, Flow inversion and residual heat removal is important problem. The heat removal strategy at accident situation for a pressure vessel in pool layout research reactor was studied in the paper, many cases was researched for the ability of heat removal and safety of core.
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Zhang D, Ran X, Zhang Y, Zhang H. Study of cooling strategy for pressure vessel in pool research reactor at accident situation. KERNTECHNIK 2021. [DOI: 10.1515/kern-2020-850205] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Pressure vessel in pool layout is usually used in high power and middle pressure research reactor, Flow inversion and residual heat removal is important problem. The heat removal strategy at accident situation for a pressure vessel in pool layout research reactor was studied in the paper, many cases was researched for the ability of heat removal and safety of core.
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Yin B, Ran X, Zhang C, Xie Z, Ran Y, Fu L, Pradhan S. Tinea incognito infection with Trichophyton erinacei from a pet hedgehog. Br J Dermatol 2020; 183:e92. [PMID: 32538462 DOI: 10.1111/bjd.19206] [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)
- B Yin
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, China
| | - X Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - C Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Z Xie
- Department of Dermatovenereology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu, China
| | - Y Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - L Fu
- Department of Dermatovenereology, Chengdu Second People's Hospital, Chengdu, China
| | - S Pradhan
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
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Wu J, Ma J, Gu H, Dong D, Bührer C, Tsuchiya C, Simonella L, Ran X, Liu C, Launonen A. PCN34 The Societal IMPACT of Obinutuzumab in the First-LINE Treatment of Follicular Lymphoma in China. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Affiliation(s)
- S Pradhan
- Department of Dermatovenereology, West China Hospital, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - X Ran
- Department of Dermatovenereology, West China Hospital, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - C Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - X Li
- Department of Dermatovenereology, West China Hospital, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
| | - Y Ran
- Department of Dermatovenereology, West China Hospital, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China
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Singh N, Yang H, Pradhan S, Ran X, Ran Y. Image Gallery: Wandering
Demodex
mite
in vivo
under ultraviolet dermoscopy of rosacea. Br J Dermatol 2019; 182:e2. [PMID: 31432494 DOI: 10.1111/bjd.18370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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)
- N. Singh
- Department of Dermatovenereology West China Hospital Sichuan University Chengdu 610041 China
| | - H. Yang
- Department of Dermatovenereology West China Hospital Sichuan University Chengdu 610041 China
| | - S. Pradhan
- Department of Dermatovenereology West China Hospital Sichuan University Chengdu 610041 China
| | - X. Ran
- Department of Dermatovenereology West China Hospital Sichuan University Chengdu 610041 China
| | - Y. Ran
- Department of Dermatovenereology West China Hospital Sichuan University Chengdu 610041 China
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Yang Q, Tang JQ, Pradhan S, Ran X, Ran YP. Image Gallery: A case of malignant syphilis in an HIV-infected patient mimicking fungal infection. Br J Dermatol 2019; 178:e64. [PMID: 29357605 DOI: 10.1111/bjd.16069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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)
- Q Yang
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - J Q Tang
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - S Pradhan
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - X Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - Y P Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
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Pradhan S, Ran X, Xu X, Yang Y, Lei S, Ran Y. Image Gallery: Dermoscopy of perianal molluscum contagiosum in a child caused by molluscum contagiosum virus subtype I. Br J Dermatol 2019; 180:e68. [PMID: 30821395 DOI: 10.1111/bjd.17401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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)
- S Pradhan
- Department of Dermatovenereology, Sichuan University, Chengdu, 610041, China
| | - X Ran
- Department of Dermatovenereology, Sichuan University, Chengdu, 610041, China
| | - X Xu
- Department of Dermatovenereology, Sichuan University, Chengdu, 610041, China
| | - Y Yang
- Department of Dermatovenereology, Sichuan University, Chengdu, 610041, China
| | - S Lei
- Department of Pathology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Y Ran
- Department of Dermatovenereology, Sichuan University, Chengdu, 610041, China
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Liao D, Yu H, Han L, Zhong C, Ran X, Wang D, Mo L. Association of PON1 gene polymorphisms with polycystic ovarian syndrome risk: a meta-analysis of case-control studies. J Endocrinol Invest 2018; 41:1289-1300. [PMID: 29546656 DOI: 10.1007/s40618-018-0866-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [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: 01/20/2018] [Accepted: 03/08/2018] [Indexed: 12/13/2022]
Abstract
PURPOSE Evidences showed that paraoxonase 1 (PON1) gene polymorphism has an impact on women's susceptibility to polycystic ovarian syndrome (PCOS) by influencing the expression and activity of PON1. However, the effects of three PON1 polymorphisms (- 108 C>T, L55M and Q192R) on the incidence of PCOS have generated inconsistent results. Here, we conducted a meta-analysis to investigate the association between PON1 polymorphisms and PCOS risk. METHODS All eligible trials were identified via systematic searches of multiple literature databases. Outcome data were synthesized by using crude odds ratio with 95% confidence interval. Heterogeneity was assessed with the I2 test. Publication bias and subgroup analyses were also performed. RESULTS A total of 2449 cases and 1977 controls from nine studies were selected for analysis. The pooled results showed a significant association between PCOS risk and PON1 - 108 C/T polymorphism in the following genetic models [allelic, 0.72 (0.56-0.92); homozygote, 0.51 (0.32-0.82); heterozygote, 0.44 (0.25-0.78); and dominant 0.47 (0.29-0.77)]. For the PON1 192 Q/R polymorphism, a significant relationship was found in the allelic model [0.62 (0.41-0.93)] and recessive model [0.61 (0.37-0.98)]. PCOS risk was also linked to PON1 L55M polymorphism in the heterozygote model [0.62 (0.39-0.98)] and dominant model [0.63 (0.41-0.96)]. CONCLUSIONS Our study has shown that PON1 - 108 C/T polymorphism might be associated with increased risk of PCOS under the allelic, homozygote, heterozygote, and dominant models. Additionally, PON1 192 Q/R and L55M polymorphisms were significantly related only in the allelic and recessive model, and in the heterozygote and dominant model, respectively.
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Affiliation(s)
- D Liao
- Department of Gynaecology and Obstetrics, Dongguan Third People's Hospital, Affiliated Dongguan Shilong People's Hospital of Southern Medical University, No. 1, Huangzhou Xianglong Road of Shilong Town, Dongguan, 523326, Guangdong, China
| | - H Yu
- Department of Gynaecology and Obstetrics, Dongguan Maternal and Child Health Hospital, Dongguan, China
| | - L Han
- Department of Gynaecology, Dongguan Changan Hospital, Dongguan, 523560, Guangdong, China
| | - C Zhong
- Department of Gynaecology and Obstetrics, Dongguan Third People's Hospital, Affiliated Dongguan Shilong People's Hospital of Southern Medical University, No. 1, Huangzhou Xianglong Road of Shilong Town, Dongguan, 523326, Guangdong, China
| | - X Ran
- Department of Gynaecology and Obstetrics, Dongguan Third People's Hospital, Affiliated Dongguan Shilong People's Hospital of Southern Medical University, No. 1, Huangzhou Xianglong Road of Shilong Town, Dongguan, 523326, Guangdong, China
| | - D Wang
- Department of Gynaecology and Obstetrics, Dongguan Third People's Hospital, Affiliated Dongguan Shilong People's Hospital of Southern Medical University, No. 1, Huangzhou Xianglong Road of Shilong Town, Dongguan, 523326, Guangdong, China
| | - L Mo
- Department of Gynaecology and Obstetrics, Dongguan Third People's Hospital, Affiliated Dongguan Shilong People's Hospital of Southern Medical University, No. 1, Huangzhou Xianglong Road of Shilong Town, Dongguan, 523326, Guangdong, China.
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15
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You Z, Ran X, Dai Y, Ran Y. Clioquinol, an alternative antimicrobial agent against common pathogenic microbe. J Mycol Med 2018; 28:492-501. [DOI: 10.1016/j.mycmed.2018.03.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/17/2018] [Accepted: 03/18/2018] [Indexed: 12/11/2022]
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16
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Ran X, Lee YK, Pan G, Pei D, Tse HF. 1430CRISPR/Cas9-mediated correction of Troponin I R186Q mutation rescues myofibrillar disarray and excitation-contraction coupling abnormalities in IPSC model from hypertrophic cardiomyopathy patient. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.1430] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- X Ran
- The University of Hong Kong, Cardiology Division, Department of Medicine, Hong Kong, Hong Kong SAR People's Republic of China
| | - Y K Lee
- The University of Hong Kong, Cardiology Division, Department of Medicine, Hong Kong, Hong Kong SAR People's Republic of China
| | - G Pan
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China People's Republic of
| | - D Pei
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, China People's Republic of
| | - H F Tse
- The University of Hong Kong, Cardiology Division, Department of Medicine, Hong Kong, Hong Kong SAR People's Republic of China
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17
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Lee YK, Lau YM, Ran X, Cai ZJ, Lai WH, Siu CW, Tse HF. P5714Disease modeling of laminopathy-related dilated cardiomyopathy (DCM) - Proarrhythmic effects and electrical-contraction (EC) coupling defeats due to altered mechanosensitivity of lamin A. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5714] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Y K Lee
- The University of Hong Kong, Department of Medicine, Division of Cardiology, Hong Kong, Hong Kong SAR People's Republic of China
| | - Y M Lau
- The University of Hong Kong, Department of Medicine, Division of Cardiology, Hong Kong, Hong Kong SAR People's Republic of China
| | - X Ran
- The University of Hong Kong, Department of Medicine, Division of Cardiology, Hong Kong, Hong Kong SAR People's Republic of China
| | - Z J Cai
- The University of Hong Kong, Department of Medicine, Division of Cardiology, Hong Kong, Hong Kong SAR People's Republic of China
| | - W H Lai
- The University of Hong Kong, Department of Medicine, Division of Cardiology, Hong Kong, Hong Kong SAR People's Republic of China
| | - C W Siu
- The University of Hong Kong, Department of Medicine, Division of Cardiology, Hong Kong, Hong Kong SAR People's Republic of China
| | - H F Tse
- The University of Hong Kong, Department of Medicine, Division of Cardiology, Hong Kong, Hong Kong SAR People's Republic of China
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18
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Ran X, Tang JQ, Zheng L, Zhang CL, Ran YP. Cover Image: The manifestation of adult mite Sarcoptes scabiei under scanning electron microscope. Br J Dermatol 2018; 179:545-546. [PMID: 30141553 DOI: 10.1111/bjd.16688] [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: 06/08/2023]
Affiliation(s)
- X Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - J Q Tang
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - L Zheng
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
- Department of Dermatovenereology, Chengdu Second People's Hospital, Sichuan University, Chengdu, China
| | - C L Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y P Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
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19
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Yin B, Ran X, Ran Y, Zhang Y, Pradhan S. Cover Image: Dermoscopic detection of unusual eyelash
Trichophyton interdigitale
infection mimicking hordeolum. Br J Dermatol 2018; 178:989-990. [PMID: 29668092 DOI: 10.1111/bjd.16434] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- B. Yin
- Department of Dermatovenereology Chengdu Second People's Hospital Chengdu China
| | - X. Ran
- Department of Dermatovenereology West China Hospital Sichuan University Chengdu 610041 China
| | - Y. Ran
- Department of Dermatovenereology West China Hospital Sichuan University Chengdu 610041 China
| | - Y. Zhang
- Department of Dermatovenereology Chengdu Second People's Hospital Chengdu China
| | - S. Pradhan
- Department of Dermatovenereology West China Hospital Sichuan University Chengdu 610041 China
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20
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Zhuang K, Ran X, Ran Y. Cover Image: Trichophyton violaceum destroys hair keratin fibres in tinea capitis. Br J Dermatol 2017; 177:1767-1768. [PMID: 29313923 DOI: 10.1111/bjd.15984] [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)
- K Zhuang
- Department of Dermatovenereology, West China Hospital, Sichuan University, China
| | - X Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, China
| | - Y Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, China
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21
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Zhang XM, Nong L, Ran X, Li M. [Clinic pathological and ultrasonographic features of primary thyroid lymphoma]. Zhonghua Yi Xue Za Zhi 2017; 97:2936-2939. [PMID: 29050166 DOI: 10.3760/cma.j.issn.0376-2491.2017.37.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the ultrasonographic and clinicopathological features of primary thyroid lymphoma(PTL). Methods: The ultrasonographic and clinicopathological featuresof 21 cases of pathologically-confirmed PTLs were analyzed retrospectively. Results: Of all 21 PTLs, 15 cases were diffuse large B-cell lymphoma, 4 were mucosal-associated lymphoid tissue extranodular marginal zone B-cell lymphoma, 1 was small B-cell lymphoma and 1 was classical Hodgkin lymphoma. Eight cases were proved by pathology with concomitant Hashimoto's thyroiditis. Ultrasonography observed bilateral or unilateral asymmetric goiter (21/21, 100.0%), marked hypoechogenicity (21/21, 100.0%) with posterior acoustic enhancement (19/21, 90.5%), heterogeneous echo texture with interspersed linear echogenic strands or intensive reticular echogenic strands or cloud echogenic, heterogeneous echo texture of thyroid gland (21/21, 100.0%), focal nodular hypoechoic(2/21, 9.5%) with regular or irregular shape, increased vascularity (13/21, 61.9%) and cervical lymphadenopathy (12/21, 57.1%). Two cases involved the anterior cervical muscle and 1 infiltrated trachea. Rapidly enlarging cervical mass were found in 13 cases (13/21, 61.9%)with associated compressive symptoms such as dyspnea, dysphagia and hoarseness. There was no any indisposed symptom in 3 cases. Conclusion: PTL has some common ultrasonographic and clinical features, core needle biopsy should be warranted to prove PTL.Surgical resection should be considered when needed to reduce misdiagnosis.
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Affiliation(s)
- X M Zhang
- Department of Ultrasound, Peking University First Hospital, Beijing 100034, China
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22
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Affiliation(s)
- J Q Tang
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - X Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - Y P Ran
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
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23
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Ran X, Lee Y, Tse H. P4241Activation of the calcineurin-NFAT pathway in hypertrophic cardiomyopathy due to abnormal calcium homeostasis contributes to progression of cardiomyocytes hypertrophy: Insights from human iPSC model. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4241] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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Gu W, Liu Y, Chen Y, Deng W, Ran X, Chen L, Zhu D, Yang J, Shin J, Lee SW, Cordero TL, Mu Y. Multicentre randomized controlled trial with sensor-augmented pump vs multiple daily injections in hospitalized patients with type 2 diabetes in China: Time to reach target glucose. Diabetes Metab 2017; 43:359-363. [PMID: 28236571 DOI: 10.1016/j.diabet.2016.12.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 11/09/2016] [Accepted: 12/19/2016] [Indexed: 02/05/2023]
Abstract
AIM Sensor-augmented pump (SAP) technology, which combines continuous subcutaneous insulin infusion (CSII) and real-time continuous glucose monitoring (RT-CGM), has been available for several years in China. In this study, the time required to reach predefined glycaemic targets with SAP vs multiple daily injection (MDI) therapy was compared in hospitalized patients with type 2 diabetes mellitus (T2DM). METHODS Adults (aged 18-65 years) with T2DM treated with insulin and admitted to hospital for glucose management were randomized to either SAP (Medtronic MiniMed™ Paradigm™ 722 system) or MDI with blinded CGM (Medtronic MiniMed CGMS System Gold™) for a 2-week period. Glycaemic targets were defined as three preprandial measurements between 80 and 130mg/dL (4.4 and 7.2mmol/L) and three 2-h postprandial measurements between 80 and 180mg/dL (4.4 and 10.0mmol/L) within the same day. RESULTS When data from 81 patients (40 SAP, 41 MDI) were analysed, 21 patients using SAP therapy, compared with six using MDI therapy, achieved their glycaemic targets within 3 days, and their time to reach their glucose targets was significantly shorter (3.7±1.1 vs 6.3±3.1 days for MDI; P<0.001), while three MDI patients failed to reach glycaemic targets within 14 days. SAP vs MDI patients experienced significantly less hypoglycaemia [sensor glucose<50mg/dL (2.8mmol/L): 0.04% vs 0.32%, respectively; P<0.05] and significantly less hyperglycaemia [sensor glucose>180mg/dL (10mmol/L): 21.56% vs 35.03%, respectively; P<0.05]. CONCLUSION SAP vs MDI therapy in hospitalized patients with T2DM significantly reduced the time required to achieve glycaemic targets, and such systems may be a cost-effective way to improve glucose control and reduce hospital stays in T2DM patients.
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Affiliation(s)
- W Gu
- Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, China.
| | - Y Liu
- The Second Hospital of Jilin University, No. 218, Ziqiang Street, Nanguan District, Changchun, Jilin Province, China.
| | - Y Chen
- Fu Wai Hospital CAMS & PUMC, 167 Beilishi Road, Xi Cheng District, Beijing, China.
| | - W Deng
- Beijing Jishuitan Hospital, No. 31, Xin Jie Kou Eastern Street, Western District, Beijing, China.
| | - X Ran
- West China Hospital-Sichuan University, No. 37, Guoxue Alley, Chengdu, Sichuan Province, China.
| | - L Chen
- Union Hospital Tongji Medical College, No. 1277, Jiefang Avenue, Wuhan, Hubei Province, China.
| | - D Zhu
- Nanjing Drum Tower Hospital, Nanjing University Medical School, No. 321, Zhongshan, Nanjing, China.
| | - J Yang
- Beijing Tongren Hospital, Capital Medical University, No. 1, Dong Jiao Min Xiang, Eastern District, Beijing, China.
| | - J Shin
- Medtronic, 18000 Devonshire Street, Northridge, CA 91325, United States.
| | - S W Lee
- Medtronic, 18000 Devonshire Street, Northridge, CA 91325, United States.
| | - T L Cordero
- Medtronic, 18000 Devonshire Street, Northridge, CA 91325, United States.
| | - Y Mu
- Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, China.
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25
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Abstract
Advances in differentiation of cardiomyocytes from human induced pluripotent stem cell (hiPSC) were emerged as a tool for modeling of cardiovascular disease that recapitulates the phenotype for the purpose of drug screening, biomarker discovery, and testing of single-nucleotide polymorphism (SNP) as a modifier for disease stratification. Here, we describe the (1) retroviral reprogramming strategies in the generation of human iPSC, (2) methodology in characterization of iPSC in order to identify the stem cell clones with the best quality, and (3) protocol of cardiac differentiation by modulation of Wnt signaling and β-catenin pathway.
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Affiliation(s)
- Yee Ki Lee
- Cardiology Division, Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - X Ran
- Cardiology Division, Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - K W H Lai
- Cardiology Division, Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - V Y M Lau
- Cardiology Division, Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - D C W Siu
- Cardiology Division, Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- Research Center of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
- Shenzhen Institutes of Research and Innovation, University of Hong Kong, Hong Kong, China
- Division of Cardiology, Queen Mary Hospital, Hong Kong, China
| | - H F Tse
- Cardiology Division, Department of Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China.
- Research Center of Heart, Brain, Hormone and Healthy Aging, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China.
- Shenzhen Institutes of Research and Innovation, University of Hong Kong, Hong Kong, China.
- Hong Kong-Guangdong Joint Laboratory on Stem Cell and Regenerative Medicine, Hong Kong, China.
- Division of Cardiology, Queen Mary Hospital, Hong Kong, China.
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26
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Qian G, Ran X, Zhou CX, Deng DQ, Zhang PL, Guo Y, Luo JH, Zhou XH, Xie H, Cai M. Systemic lupus erythematosus patients in the low-latitude plateau of China: altitudinal influences. Lupus 2014; 23:1537-45. [PMID: 25059490 DOI: 10.1177/0961203314544186] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The current study was to investigate the features of hospitalized patients with systemic lupus erythematosus (SLE) at different altitudes. The correlation between SLE activity and altitudinal variations was also explored. Medical records of 1029 patients were retrospectively reviewed. Activity of SLE in each organ system was recorded using the Systemic Lupus Erythematosus Disease Activity Index (SLEDAI). There was no significant correlation between SLE activity and altitudes (r = 0.003, p = 0.159). Age at onset for SLE patients at high altitudes was significantly younger than that at low and moderate altitudes (p = 0.022 and p = 0.004, respectively). Age at SLE admission at low altitudes was significant older than those at moderate and high altitudes (p = 0.011 and p < 0.001, respectively). Patients at high altitudes had shorter duration from disease onset to admission than those at moderate altitudes (p = 0.009). Incidence of Sm antibodies-positive for resident patients at high altitudes was 36.4%, which were higher than that at moderate altitudes (p = 0.003). We found increasing trends of CNS activity in active patients; immunological and renal activities in inactive patients were correlated with elevated altitudes (p = 0.024, p = 0.004, p = 0.005), while arthritis scores in active patients showed the tendency of decreasing with the rise of elevation (p = 0.002). Hemoglobin level, red blood cell and platelet counts at high altitudes were significantly lower than those at low altitudes (p < 0.05, respectively). There was no significant difference in hemoglobin level between moderate- and low-altitude groups (p > 0.05). No significant difference in platelet counts between moderate- and high-altitude groups was observed (p > 0.05). Our findings suggest that some clinical features, laboratory tests and activity of main organs in SLE are influenced by altitudes. Furthermore, organ activities of active and inactive SLE patients have different patterns of altitudinal variations. These distinctive variations likely reveal that peculiar environmental factors at high altitudes can affect the development of SLE.
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Affiliation(s)
- G Qian
- Department of Dermatology & Rheumatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - X Ran
- Department of Dermatology & Rheumatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - C X Zhou
- Department of Dermatology & Rheumatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - D Q Deng
- Department of Dermatology & Rheumatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - P L Zhang
- Department of Dermatology & Rheumatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Y Guo
- Department of Dermatology & Rheumatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - J H Luo
- Department of Epidemiology, School of Public Health, Kunming Medical University, Kunming, China
| | - X H Zhou
- Department of Dermatology & Rheumatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - H Xie
- Department of Dermatology & Rheumatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - M Cai
- Department of Dermatology & Rheumatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
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27
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Abstract
Islet replacement therapy, pancreatic islet transplantation, is considered as a potential option for curing T1DM. However, the significant loss of implanted islets after islet transplantation prevents it from becoming a mainstream treatment modality. Due to the lack of reliable noninvasive real-time imaging techniques to track the survival of the islets, it is impossible to discover the specific causes for the loss of implanted islets, not to mention taking interventions in the early stage. Current achievements in molecular imaging has provided with several promising techniques, including optical imaging, PET and MRI, for noninvasive visualization, quantification and functional evaluation of transplanted islets in experimental conditions. Optical imaging seems to be the most convenient and cost-efficient modality, but the limited penetration distance hinders its application in large animal and human studies. PET combined with target-specific tracers is characterized by high specificity and sensitivity for detection of islet grafts, but observation time is rather short (i.e., several hours). MRI stands out for its long-term visualization of transplanted islet grafts with the aid of contrast agents. However, quantification of islets remains a problem to be solved. A novel technique, microencapsulation, provides a new perspective in multimodal imaging by optimizing the strengths of several modalities together. Although the application of molecular imaging in clinical settings is still limited, significant success and valuable information is achieved in the basic and clinical trials. However, islet transplantation still remains an experimental procedure, with ongoing researches focusing on islets availability, appropriate sites for implantation, new methods using biomaterials (e.g. microencapsulation), immune modulation and more.
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Affiliation(s)
- Y Liu
- West China Hospital, Radiology, Chengdu, China
| | - B Song
- West China Hospital, Radiology, Chengdu, China
| | - X Ran
- West China Hospital, Endocrinology, Chengdu, China
| | - Q Jiang
- Henry Ford Health System, Neurology, Detroit, United States
| | - J Hu
- Wayne State University, Detroit, United States
| | - S M Vance Chiang
- West China College of Medicine, Sichuan University, Chengdu, China
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28
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Chen T, Zhang X, Long Y, Yu H, Ran X, Gao Y, Lu H, Xie X, Chen X, Ren Y, Shi J, Tian H. The association of plasma free amino acids with liver enzymes in Type 2 diabetic patients. J Endocrinol Invest 2012; 35:772-5. [PMID: 22071500 DOI: 10.3275/8059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Elevated γ-glutamyl transpeptidase (GGT) and alanine aminotransferase (ALT) could predict the risk of Type 2 diabetes (T2D), but the reason for their elevation was unclear. GGT and ALT mediated the metabolism of many amino acids (AA). Up to now, it was not investigated whether abnormal AA concentration was associated with elevated liver enzymes. AIM This study was to investigate the status of AA in T2D and their relationship with liver enzymes. SUBJECTS AND METHODS A total of 132 T2D patients and 137 healthy controls were recruited. Plasma free AA were measured by high-performance liquid chromatography. The contribution of individual AA to liver enzymes was assessed by stepwise linear regression. RESULTS a) The levels of alanine, valine, leucine, isoleucine, phenylalanine, tyrosine, methionine, glutamate, and lysine were higher while the level of glycine was lower in T2D than in controls (all p<0.01). b) Glutamate contributed to GGT in T2D, and its contribution was even greater than that of waist circumference. Leucine, lysine, and glutamate contributed to ALT. CONCLUSION There were significant differences in plasma AA profile between T2D and controls. Abnormal AA might contribute to elevated liver enzymes. The interaction between AA, liver enzymes, and the risk of T2D should be further investigated by prospective studies.
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Affiliation(s)
- T Chen
- Department of Endocrinology and Metabolism, West China Hospital of Sichuan University, Chengdu, PR China
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Li Y, Hu Y, Shi C, Li D, Jin L, Ran X, Zhang L. Two novel organic amine templated lanthanide sulfates: Layer H3DETA · [Nd(H2O)(SO4)3] and chain-like H3DETA · [Ho(H2O)2(SO4)3]. RUSS J COORD CHEM+ 2010. [DOI: 10.1134/s1070328410110102] [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: 11/22/2022]
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Abstract
AIMS The aim of the study was to explore the prevalence and clinical characteristics of hand ulcer in hospitalized patients with diabetes. METHODS We analysed 17 subjects with hand ulcer among diabetic inpatients, who were admitted to the Diabetic Foot Care Center, Department of Endocrinology and Metabolism at the West China Hospital of Sichuan University from April 2003 to December 2008. RESULTS The prevalence of diabetic hand ulcer among hospitalized patients (0.37%) was significantly lower than that of diabetic foot ulcers (9.7%, P = 0.000). The mean age was 62.1 +/- 9.4 years. The average known durations of diabetes and glycated haemoglobin (HbA(1c)) were 5.3 +/- 4.9 years and 10.9 +/- 2.4%, respectively. All patients lived in the subtropical zone. Fifteen patients (88.2%) were diagnosed with diabetic peripheral neuropathy. Ten patients had hand infection. After therapy, the ulcers healed in 13 patients (76.5%) and none of them experienced amputation. The average hospital stay for patients with local infection was characteristically longer than that for patients without infection (P = 0.012). The prognosis of the hand ulcer was poorer in the patients who had diabetes for > 3 years compared with those who had diabetes for < 3 years (P = 0.009). CONCLUSIONS Diabetic hand ulcer is a relatively rare complication of diabetes in South-West China. Long duration of diabetes, poorly controlled blood glucose, minor trauma and delayed treatment are the risk factors. Diabetic peripheral neuropathy may play an important role in the pathogenesis of hand ulcer. Early control of blood glucose with insulin and early anti-microbial therapy with appropriate antibiotics are crucial. Debridement and drainage are necessary for hand abscesses.
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Affiliation(s)
- C Wang
- Diabetic Foot Care Center, Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Guoxue Lane 37, Chengdu, Sichuan, China
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Li J, Liu X, Ran X, Chen J, Li X, Wu W, Huang H, Huang H, Long Y, Liang J, Cheng J, Tian H. Sterol regulatory element-binding protein-1c knockdown protected INS-1E cells from lipotoxicity. Diabetes Obes Metab 2010; 12:35-46. [PMID: 19758361 DOI: 10.1111/j.1463-1326.2009.01093.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE The reduction in insulin secretory capacity and beta-cell mass has been attributed, at least partially, to lipotoxicity, which may contribute to the development of type 2 diabetes. Chronic free fatty acids (FFA) exposure impairs pancreatic beta-cell function and induces beta-cell apoptosis. This study is to elucidate the underlying molecular mechanisms. RESEARCH DESIGN AND METHODS We exposed INS-1E pancreatic beta-cell line to palmitate or oleate, and measured the glucose stimulated insulin secretion (GSIS). The effect of FFA on sterol regulatory element-binding protein (SREBP)-1c lipogenic pathway, and expression of genes involved in beta-cell functions, including AMPK (AMP-activated protein kinase), UCP-2 (uncoupling protein-2), IRS-2 (insulin receptor substrate-2), PDX-1 (pancreatic duodenal homeobox-1), GLUT-2 (glucose transporter-2) and B cell lymphoma/leukaemia-2 (Bcl-2) were investigated. Apoptosis of these exposed cells was determined by MitoCapture, Annexin V-Cy3 or terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assay. Cell lipid accumulation was measured by oil red O staining or TG extraction. Also SREBP-1c expression knockdown were used. RESULTS FFA treatment resulted in SREBP-1c overexpression, impaired GSIS, lipid accumulation, apoptosis of INS-1E cells. In addition, the expression of lipogenic genes and UCP-2 were upregulated, but AMPK, IRS-2, PDX-1, GLUT-2 and Bcl-2 were downregulated in the exposed cells. However, these lipotoxic effects of FFA were largely prevented by induction of a SREBP-1c small interfering RNA. CONCLUSIONS These data suggest a strong correlation between FFA treatment and SREBP-1c activation in INS-1E cells. SREBP-1c might be a major factor responsible for beta-cell lipotoxicity, and SREBP-1c knockdown could protect INS-1E cells from lipotoxicity, which is implicating a therapeutic potential for treating diabetes related to lipotoxicity.
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Affiliation(s)
- J Li
- Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, China
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Abstract
AIMS This paper presents two cases of muscle infarction involving four major muscles of the anterior abdominal wall (case 1) and pectoralis major (case 2) in individuals with diabetes. METHODS Erythrocyte sedimentation rate (ESR) and creatine kinase (CK) were measured and Doppler ultrasound, an open muscle biopsy (case 1) and magnetic resonance imaging (MRI) (case 2) were performed. RESULT The diagnosis of muscle infarction was made by histological findings and MRI images with hyper-intensive signals on a gadolinium-enhanced T2-weighted sequence, respectively. Both patients were treated with bed rest, immobilization of the involved extremities, analgesia and intensive insulin therapy. In addition, anticoagulant drugs such as low molecular weight heparin sodium and cilostazol, and some traditional Chinese medicines such as ligustrazine and salvia miltiorrhiza were administered. The symptoms of both patients resolved gradually after 3 weeks. However, muscle infarction reoccurred in case 1 on the opposite side of the abdomen and recovered after 40 days. CONCLUSIONS This is the first report of muscle infarction involving the muscles of anterior abdominal walls and pectoralis major in diabetes. MRI is the best non-invasive technique and T2-weighted imaging is the most valuable method for the diagnosis. In addition to supportive therapy, administration of anticoagulant agents and some Chinese traditional medicine may be useful in symptom relief.
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Affiliation(s)
- X Ran
- Department of Endocrinology/Internal Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
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Ran X, Zhang L, Xiong P, Zhao T, Tong N, Li X. [Gigantism with low serum level of growth hormone: a case report]. Hua Xi Yi Ke Da Xue Xue Bao 2001; 32:621-3. [PMID: 12528568] [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: 02/28/2023]
Abstract
Gigantism with low or normal basal concentrations of growth hormone (GH) is a rare condition, possibly due to abnormal GH secretory patterns, enhanced tissue sensitivity to GH, or the existence of an unidentified growth promoting factor. Here we report an 11 year-old female case of gigantism with a normal pituitary gland. Her height was 181 cm, body weight 77 kg, and bone age 11.1 years. Her basal serum GH levels were lower than 1 ng/ml. The levels of T3, T4, FT3, FT4, TSH, E2, LH, FSH, PRL, PTC and ACTH were normal. Serum GH response to insulin-induced hypoglycemia or arginine stimulation tests was blunted. In this case, non-pulsatile GH secretion and enhanced tissue sensitivity to GH may induce hypersecretion of IGF-1 and the existence of an unidentified growth promoting factor or biologically active anti-GH receptor antibodies may cause clinical gigantism.
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Affiliation(s)
- X Ran
- Endocrinology/Internal Medicine, First Affiliated Hospital, WCUMS, Chengdu 610041, China
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Ran X, Li X, He Y, Liu D, Liu Y, Liu Y, Zhao T. [The levels of angiotensin and aldosterone in gases of hyperthyroid Graves' disease with and without hypokalemic periodic paralysis]. Hua Xi Yi Ke Da Xue Xue Bao 2001; 32:435-7. [PMID: 12536586] [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: 02/28/2023]
Abstract
OBJECTIVE To investigate the relationships between the changes of plasma angiotensin I (AT I). Angiotensin II (AT II). serum aldosterone (Ald) levels and hypokalemic periodic paralysis (THPP) complicating hyperthyroid Graves' disease. METHODS The levels of serum potassium, TT3, TT4, FT3, FT4, Ald and the plasma AT I, AT II and 24 hours urine potassium output were determined in 73 cases of hyperthroid Graves' disease, of which 43 were complicated by THPP and the other 30 were grouped as NTHPP cases. RESULTS The mean level of serum potassium in THPP group was significantly lower than that in NTHPP group (P = 0.000), and the mean level of 24 hours urine potassium output in THPP group was significantly higher than that in NTHPP group(P = 0.000); The mean levels of plasma AT II and serum Ald in THPP group in upright position were significantly higher than those in NTHPP group (P = 0.008 and 0.013, respectively). The mean levels of 24 hours urine potassium output, plasma AT II and serum Ald in upright position were negatively correlated to serum potassium in both groups. The level of serum Ald in upright position was positively correlated to the level of 24 hours urine potassium out-put. The mean levels of plasma AT I and AT II in supine position were positively correlated to serum T3, and the level of plasma AT II in upright position was positively correlated to serum FT3. CONCLUSION The level of 24 hours urine potassium output rises in THPP patients; the high levels of AT and Ald may contribute to the pathogenesis of the disease.
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Affiliation(s)
- X Ran
- Endocrinology/Internal Medicine Department, First Affiliated Hospital, WCUMS, Chengdu 610041, China
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Wang Y, Su Y, Ai G, Ran X, Liu X, Cheng T. [An experimental study of the influence of burn on the expressions of IFN-gamma and IL-4 in T lymphocytes and on the expression of IL-12 in macrophages in mice]. Zhonghua Shao Shang Za Zhi 2001; 17:236-9. [PMID: 11876950] [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: 02/24/2023]
Abstract
OBJECTIVE To investigate the influence of burn on the expressions of IFN-gamma and IL-4 in T lymphocytes and on the expression of IL-12 in macrophages in mice. METHODS The mice inflicted by 12% TBSA burn on the back were employed as the model. The peritoneal macrophages (PMphis) were isolated and counted under light microscope (LM). The gene expression level of IL-12 P35 and P40 subunits was determined with RT-PCR. The ratio of spleen to body and splenic histology were also determined. Splenic T lymphocytes were isolated and the gene expression levels of IFN-gamma and IL-4 in the T lymphocytes were examined by RT-PCR. RESULTS (1) PMphis decreased significantly on 3 postburn day (PBD) and recovered quickly thereafter. (2) The gene expressions of IL-12 P35 and P40 subunits in PMphis were enhanced obviously. (3) Splenic index increased evidently and the karyokinesis phase increased in splenic lymphocytes. (4) The expressions of IFN-gamma and IL-4 in splenic T lymphocytes increased postburn. CONCLUSION The expressions of IFN-gamma and IL-4 in splenic T lymphocytes and the expressions of IL-12 in PMphis could be enhanced by burn injury.
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Affiliation(s)
- Y Wang
- Institute of Combined Injury, The Third Military Medical University, Chongqing 400038, P. R. China
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Chen X, Wang R, Deng M, Ran X. [Effects of exogenous adenosine 5'-monophosphate on proliferation and apoptosis of small intestinal epithelial cells]. Wei Sheng Yan Jiu 2001; 30:165-7. [PMID: 12525091] [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: 02/28/2023]
Abstract
The effect of exogenous adenosine 5'-monophosphate (AMP) on proliferation and apoptosis of a normal rat small intestinal epithelial cell line, IEC-6, was investigated. Proliferation of IEC-6 was measured by MTT. Cell cycle and apoptosis was determined by flow cytometry. Expression of Bax was detected by immunohistochemistry. The results showed that AMP remarkably inhibited the proliferation of IEC-6 in a dose- and time-dependent way. AMP also significantly changed the distribution of cell cycle, arrested cells in S phase and enhanced apoptosis by inducing Bax expression.
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Affiliation(s)
- X Chen
- School of Public Health, West China University of Medical Science, Chengdu 610041, China
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Tong N, Ran X, Chen P, Li G, Tian H. [A multicenter randomized controlled clinical trial on lipids regulating effects of domestic simvastatin]. Hua Xi Yi Ke Da Xue Xue Bao 2001; 32:111-3. [PMID: 12733372] [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 This clinical trial was designed to assess the lipids regulating effects of domestic simvastatin (DS, produced by Chengdu Huayu Pharmaceutical Co.) in patients with hyperlipidemia. METHODS 160 hyperlipidemic patients were randomly divided into 3 groups (A, B and C). Groups A and B were subjected to single-blind trial; group C was for open trial. Group A took DS 10 mg q.n., group B Zocor 10 mg q.n. and group C DS 10 mg q.n. respectively for 8 weeks. All the patients were followed up at the 4th week and 8th week. 155 patients finished the trial with 59 cases in group A, 47 cases in group B and 39 cases in group C. RESULTS At the 4th week, serum total cholesterol (TC) in group A, B and C decreased by 16.88%, 19.23% and 14.10%; serum triglycerides (TG) decreased by 19.27%, 15.66% and 17.96%; HDL-C increased by 7.69%, 7.46% and 6.69%; and LDL-C decreased by 23.02%, 27.84% and 24.43%, respectively; there was no significant difference among the three groups (P > 0.05). At the 8th week, serum TC in groups A, B and C decreased by 25.03%, 26.53% and 25.22%. TG decreased by 23.85%, 24.74% and 24.75%; HDL-C increased by 9.23%, 8.95% and 8.39%; and LDL-C decreased by 33.72%, 35.50% and 30.99%, respectively; still, no significant difference among the three groups was observed (P > 0.05). The incidence rates of side effects in the three groups were similar. The clinical effects were more significant at the 8th week than at the 4th week for Zocor and DS. CONCLUSION These data suggest that DS is as effective and safe as Zocor in clinical use for lipids regulating serum.
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Affiliation(s)
- N Tong
- Department of Endocrinology, First Affiliated Hospital, WCUMS, Chengdu 610041, China
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Ran X, Yan Y, Cheng T, Lin Y, Wei S, Zheng H. Effects of combined radiation and thermal burn injury on the survival of skin allograft and immune function in rats. Chin Med J (Engl) 1998; 111:634-7. [PMID: 11245052] [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: 02/19/2023] Open
Abstract
OBJECTIVES To investigate the effects of combined radiation and thermal burn injury on the survival of skin allografts and to analyze the relationship between the prolongation of allograft survival and the changes of immune functions of the thymocytes and splenocytes in rats. METHODS Wistar rats were irradiated with 3, 4, 5, 6 and 8 Gy of gamma rays. Thirty minutes after radiation, 15% TBSA III-degree burn was inflicted to the rats. Twenty-four hours after the burn injury, allografts were used to cover the burn wounds. In the 8 Gy group, 1 hour before skin grafting, the bone marrow cells (4 x 10(8)) from the same donor were also transplanted. All rats were carefully observed after injury. The rats with single radiation injury of 5 Gy gamma rays, with single burn injury and with combined radiation-burn injury were killed 3, 7, 10, 15 and 30 days after skin grafting for immunological assay and pathological study. RESULTS All the allografts in the single burn group were rejected in 10 days. In the combined injury groups, the survival rates of the allografts in rats undergoing 3 and 4 Gy radiation were 20% and 30%, respectively. In the combined injury groups undergoing 5, 6 and 8 Gy radiation, the 10-day survival rates of the allografts were 69%, 88% and 100% respectively, and the 30-day survival rates in the three groups were 36%, 42% and 100% separately. The grafted allogenic skin, with normal epithelial cells and good vascularity, healed well with the recipient's skin. Hairs grew well from the allografts 30 days after grafting. Three, 7 and 15 days after allografting, in the single burn group, the proliferative activities of the thymocytes were 90%, 185% and 130% of the preinjury level, and the antibody forming capacities of the splenocytes were 200%, 171% and 300% of the preinjury level, respectively; in the combined injury groups, the proliferative activities were 6%, 99% and 91% of the preinjury level, and the forming capacities were 2%, 36% and 90% of the preinjury level. CONCLUSIONS The survival rate of allograft in rats undergoing combined radiation and thermal burn injury rises with the increase in radiation dosage. The allograft covering single bun injury is severely rejected by immune reaction. The prolongation of the survival of allograft in combined injury group mainly results from radiation that suppresses immune functions.
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Affiliation(s)
- X Ran
- Institute of Combined Injury of PLA, School of Preventive Medicine, Third Military Medical University, Chongqing 600038, China
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Ran X, Yan Y, Lin Y. [Effects of locally used SD zinc, SD silver and skin transplantation on the combined radiation-burn injury in the rat]. Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi 1997; 13:330-4. [PMID: 10452039] [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: 02/13/2023]
Abstract
Effects of local use of sulfadiazine (SD) zinc, SD silver in the wound and skin transplantation on the combined injury of 6 Gy radiation and 15% TBSA burn were investigated in the present study. In the three groups of SD zinc or SD silver plus skin grafting at 15 d after combined injury and SD zinc alone, the 15-day survival rates were 63%, 69% and 75% respectively, and significantly higher than that of control group (42%). The repair time of burn wound was shorter and the number of white blood cells was lower than that of control. Animals in the group of local use of SD silver followed by skin grafting on the 7th day all died, but all of the animals survived when the skin grafting was performed after 15 days. These results suggested that SD zinc and SD silver showed some therapeutic effects on the combined radiation-burn injury. In critical phase of the combined injury, surgical operation should be prohibited. However, in the recovery phase, skin transplantation could be performed.
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Affiliation(s)
- X Ran
- Department of Preventive Medicines, Third Military Medical College, Chongqing
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Yan Y, Ran X, Wei S. Changes of immune functions after radiation, burns and combined radiation-burn injury in rats. Chin Med Sci J 1995; 10:85-89. [PMID: 7647325] [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: 05/21/2023]
Abstract
The changes of several immune functions were observed in rats after they were inflicted with 6 Gy gamma rays irradiation, 15% TBSA full thickness brun and the combination of the 2 injuries. It was found that the functions of thymocytes and splenoctyes suffered the most severe suppression in the 24th to 72nd hour after radiation injury and began to recover on the 7th day. In the rats with burn injury, the suppression on thymocytes and splenocytes were significantly less severe than that after radiation and recovered more rapidly. The effects of combined radiation-burn injury showed several characteristics. The suppression on the thymocytes was more severe with slower recovery as compared with that after single radiation injury only. The suppression on the splenocytes as a whole was similar to that after single radiation injury, but in the early stage after combined injury, the suppression was far more severe than that after radiation. Escharectomy and skin grafting on the burn wounds on the 1st day after combined injury could accelerate the recovery on both the thymocytes and splenocytes. Our findings indicated that the severity of the suppression on the immune functions due to combined radiation-burn injury might depend on the size of the burn wounds.
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Affiliation(s)
- Y Yan
- Department of Radiation Medicine, Third Military Medical College, Chongqing
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Ran X, Farvardin N. A perceptually motivated three-component image model-part II: applications to image compression. IEEE Trans Image Process 1995; 4:430-447. [PMID: 18289992 DOI: 10.1109/83.370696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
For past I see ibid., vol.4, no.4, p.405 (1995). The use of the image model of Part I is investigated in the context of image compression. The model decomposes the image into a primary component that contains the strong edge information, a smooth component that represents the background slow-intensity variations, and a texture component that contains the textures. The primary component, which is known to be perceptually important, is encoded separately by encoding the intensity and geometric information of the strong edge brim contours. Two alternatives for coding the smooth and texture components are studied: entropy-coded adaptive DCT and entropy-coded subband coding. It is shown via simulations that the proposed schemes, which can be thought of as a hybrid of waveform coding and feature-based coding techniques, result in both subjective and objective performance improvements over several other image coding schemes and, in particular, over the JPEG continuous-tone image compression standard. These improvements are especially noticeable at low bit rates. Furthermore, it is shown that a perceptual tuning based on the contrast-sensitivity of the human visual system can be used in the DCT-based scheme, which in conjunction with the three-component model, leads to additional subjective performance improvements.
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Affiliation(s)
- X Ran
- Dept. of Syst. Technol., Nat. Semicond. Corp., Santa Clara, CA
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Ran X, Farvardin N. A perceptually motivated three-component image model-Part I: description of the model. IEEE Trans Image Process 1995; 4:401-415. [PMID: 18289990 DOI: 10.1109/83.370671] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Some psychovisual properties of the human visual system are discussed and interpreted in a mathematical framework. The formation of perception is described by appropriate minimization problems and the edge information is found to be of primary importance in visual perception. Having introduced the concept of edge strength, it is demonstrated that strong edges are of higher perceptual importance than weaker edges (textures). We have also found that smooth areas of an image influence our perception together with the edge information, and that this influence can be mathematically described via a minimization problem. Based on this study, we have proposed to decompose the image into three components: (i) primary, (ii) smooth, and (iii) texture, which contain, respectively, the strong edges, the background, and the textures. An algorithm is developed to generate the three-component image model, and an example is provided in which the resulting three components demonstrate the specific properties as expected. Finally, it is shown that the primary component provides a superior representation of the strong edge information as compared with the popular Laplacian-Gaussian operator edge extraction scheme.
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Affiliation(s)
- X Ran
- Dept. of Syst. Technol., Nat. Semicond. Corp., Santa Clara, CA
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