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Liu RT, Zhang D, Li S, Chen Y, Wan XX, Diao ST, Weng L, Peng JM, Du B. Comparison of different criteria of metagenomic next-generation sequencing for the diagnosis of invasive pulmonary aspergillosis in critically ill patients. Diagn Microbiol Infect Dis 2024; 108:116135. [PMID: 38065016 DOI: 10.1016/j.diagmicrobio.2023.116135] [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: 08/04/2023] [Revised: 11/09/2023] [Accepted: 11/11/2023] [Indexed: 01/22/2024]
Abstract
OBJECTIVE To compare different criteria of Metagenomic Next-Generation Sequencing (mNGS) in bronchoalveolar lavage fluid (BALF) for diagnosing invasive pulmonary aspergillosis (IPA). METHODS We compared the diagnostic agreement and performances of six BALF mNGS-derived criteria (SDSMRN>1, SDSMRN≥3, SMRN≥10, SMRN≥50, RPM ratio≥10, and relative abundance of genus>30 %) in pneumonia patients. RESULTS A total of 115 patients were analyzed, with 28 identified with IPA. Diagnostic agreement among the six mNGS-derived criteria was moderate, with a Cohen's kappa of 0.577(P < 0.001). mNGS-derived criteria had low sensitivity ranging from 21.4 % to 57.1 % and high specificity from 88 % to 92 %. The optimal threshold of SDSMRN, SMRN, RPM ratio, and relative abundance of genus for diagnosing IPA were 5, 0.25, 8, and 20 %, respectively. Although using the optimal threshold, the sensitivity of mNGS is lower than 50 %. CONCLUSIONS All mNGS-derived criteria had low sensitivity for diagnosing IPA. A combination of mNGS and conventional mycological tests may be the best diagnostic strategy.
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Affiliation(s)
- Rui-Ting Liu
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Peking, China; Department of Critical Care Medicine, The Second Affiliated Hospital of Air Force Medical University, Shaanxi, China
| | - Dong Zhang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Peking, China
| | - Shan Li
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Peking, China
| | - Yan Chen
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Peking, China
| | - Xi-Xi Wan
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Peking, China
| | - Shi-Tong Diao
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Peking, China
| | - Li Weng
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Peking, China
| | - Jin-Min Peng
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Peking, China.
| | - Bin Du
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Peking, China
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Abstract
Proton exchange membrane water electrolyzers (PEMWEs) are an attractive technology for renewable energy conversion and storage. By using green electricity generated from renewable sources like wind or solar, high-purity hydrogen gas can be produced in PEMWE systems, which can be used in fuel cells and other industrial sectors. To date, significant advances have been achieved in improving the efficiency of PEMWEs through the design of stack components; however, challenges remain for their large-scale and long-term application due to high cost and durability issues in acidic conditions. In this review, we examine the latest developments in engineering PEMWE systems and assess the gap that still needs to be filled for their practical applications. We provide a comprehensive summary of the reaction mechanisms, the correlation among structure-composition-performance, manufacturing methods, system design strategies, and operation protocols of advanced PEMWEs. We also highlight the discrepancies between the critical parameters required for practical PEMWEs and those reported in the literature. Finally, we propose the potential solution to bridge the gap and enable the appreciable applications of PEMWEs. This review may provide valuable insights for research communities and industry practitioners working in these fields and facilitate the development of more cost-effective and durable PEMWE systems for a sustainable energy future.
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Affiliation(s)
- Rui-Ting Liu
- Department of Industrial and Systems Engineering, State Key Laboratory of Ultraprecision Machining Technology, Research Institute of Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Zheng-Long Xu
- Department of Industrial and Systems Engineering, State Key Laboratory of Ultraprecision Machining Technology, Research Institute of Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Fu-Min Li
- School of Chemistry and Chemical Engineering, State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
| | - Fei-Yang Chen
- Department of Industrial and Systems Engineering, State Key Laboratory of Ultraprecision Machining Technology, Research Institute of Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Jing-Ya Yu
- Department of Industrial and Systems Engineering, State Key Laboratory of Ultraprecision Machining Technology, Research Institute of Advanced Manufacturing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China.
| | - Ya Yan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China.
| | - Yu Chen
- Key Laboratory of Macromolecular Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710062, China.
| | - Bao Yu Xia
- School of Chemistry and Chemical Engineering, State Key Laboratory of Materials Processing and Die & Mould Technology, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan 430074, China.
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Chen Y, Peng JM, Hu XY, Li S, Wan XX, Liu RT, Wang CY, Jiang W, Dong R, Su LX, He HW, Long Y, Weng L, Du B. Tissue oxygen saturation is predictive of lactate clearance in patients with circulatory shock. BMC Anesthesiol 2023; 23:179. [PMID: 37231341 DOI: 10.1186/s12871-023-02139-4] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 05/14/2023] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND Tissue oxygen saturation (StO2) decrease could appear earlier than lactate alteration. However, the correlation between StO2 and lactate clearance was unknown. METHODS This was a prospective observational study. All consecutive patients with circulatory shock and lactate over 3 mmol/L were included. Based on the rule of nines, a BSA (body surface area) weighted StO2 was calculated from four sites of StO2 (masseter, deltoid, thenar and knee). The formulation was as follows: masseter StO2 × 9% + (deltoid StO2 + thenar StO2) × (18% + 27%)/ 2 + knee StO2 × 46%. Vital signs, blood lactate, arterial and central venous blood gas were measured simultaneously within 48 h of ICU admission. The predictive value of BSA-weighted StO2 on 6-hour lactate clearance > 10% since StO2 initially monitored was assessed. RESULTS A total of 34 patients were included, of whom 19 (55.9%) had a lactate clearance higher than 10%. The mean SOFA score was lower in cLac ≥ 10% group compared with cLac < 10% group (11 ± 3 vs. 15 ± 4, p = 0.007). Other baseline characteristics were comparable between groups. Compared to non-clearance group, StO2 in deltoid, thenar and knee were significantly higher in clearance group. The area under the receiver operating curves (AUROC) of BSA-weighted StO2 for prediction of lactate clearance (0.92, 95% CI [Confidence Interval] 0.82-1.00) was significantly higher than StO2 of masseter (0.65, 95% CI 0.45-0.84; p < 0.01), deltoid (0.77, 95% CI 0.60-0.94; p = 0.04), thenar (0.72, 95% CI 0.55-0.90; p = 0.01), and similar to knee (0.87, 0.73-1.00; p = 0.40), mean StO2 (0.85, 0.73-0.98; p = 0.09). Additionally, BSA-weighted StO2 model had continuous net reclassification improvement (NRI) over the knee StO2 and mean StO2 model (continuous NRI 48.1% and 90.2%, respectively). The AUROC of BSA-weighted StO2 was 0.91(95% CI 0.75-1.0) adjusted by mean arterial pressure and norepinephrine dose. CONCLUSIONS Our results suggested that BSA-weighted StO2 was a strong predictor of 6-hour lactate clearance in patients with shock.
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Affiliation(s)
- Yan Chen
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Jin-Min Peng
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Xiao-Yun Hu
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Shan Li
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Xi-Xi Wan
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Rui-Ting Liu
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Chun-Yao Wang
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Wei Jiang
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Run Dong
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Long-Xiang Su
- Department of Critical Care Medicine, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Huai-Wu He
- Department of Critical Care Medicine, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Yun Long
- Department of Critical Care Medicine, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Li Weng
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China.
| | - Bin Du
- Medical Intensive Care Unit, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, 100730, China.
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Liu RT, Chen Y, Li S, Wan XX, Weng L, Peng JM, Du B. A Comparison of Diagnostic Criteria for Invasive Pulmonary Aspergillosis in Critically Ill Patients. Infect Dis Ther 2023:10.1007/s40121-023-00818-w. [PMID: 37199881 DOI: 10.1007/s40121-023-00818-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/02/2023] [Indexed: 05/19/2023] Open
Abstract
INTRODUCTION Invasive pulmonary aspergillosis (IPA) is a common infection in intensive care units (ICUs). There are no consensus criteria for defining IPA in the ICU. We aimed to compare the diagnosis and prognosis performances of three criteria (the 2020 EORTC/MSG criteria, the 2021 EORTC/MSG ICU criteria, the modified AspICU criteria (M-AspICU)) for IPA in the ICU. METHODS In this retrospective study from our single center, we applied the three different criteria for IPA in patients with suspected pneumonia and undergoing at least one mycological test between November 10, 2016 and November 10, 2021. We compared the diagnosis agreement and prognosis performances of these three criteria in the ICU. RESULTS Overall, 2403 patients were included. The rates of IPA according to the 2020 EORTC/MSG, 2021 EORTC/MSG ICU, and M-AspICU were 3.37%, 6.53%, and 23.10%, respectively. Diagnostic agreement among these criteria was poor (Cohen's kappa 0.208-0.666). IPA diagnosed by either the 2020 EORTC/MSG (odds ratio = 2.709, P < 0.001) or the 2021 EORTC/MSG ICU (odds ratio = 2.086, P = 0.001) criteria was independently associated with 28-day mortality. IPA diagnosed by M-AspICU is an independent risk factor of 28-day mortality (odds ratio = 1.431, P = 0.031) when excluding patients who fulfilled neither host criteria nor radiological factors of 2021 EORTC/MSG ICU. CONCLUSIONS Although M-AspICU criteria have the highest "sensitivity", IPA diagnosed by M-AspICU was not an independent risk factor of 28-day mortality. Caution is required when using the M-AspICU criteria in ICU, especially in patients with non-specific infiltration and non-classical host factors.
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Affiliation(s)
- Rui-Ting Liu
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuai Fu Yuan, Beijing, 100730, People's Republic of China
| | - Yan Chen
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuai Fu Yuan, Beijing, 100730, People's Republic of China
| | - Shan Li
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuai Fu Yuan, Beijing, 100730, People's Republic of China
| | - Xi-Xi Wan
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuai Fu Yuan, Beijing, 100730, People's Republic of China
| | - Li Weng
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuai Fu Yuan, Beijing, 100730, People's Republic of China
| | - Jin-Min Peng
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuai Fu Yuan, Beijing, 100730, People's Republic of China.
| | - Bin Du
- Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, 1 Shuai Fu Yuan, Beijing, 100730, People's Republic of China.
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Li Y, Ma YB, Xiao Y, Shi GC, Zhao YM, Zhou JS, Tong C, Liu RT, Yan LK. The characteristics of the urogenital fascia in the retrorectal space based on male cadaveric dissection and its clinical application. BMC Surg 2023; 23:93. [PMID: 37069543 PMCID: PMC10111664 DOI: 10.1186/s12893-023-01993-w] [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: 03/04/2023] [Accepted: 04/07/2023] [Indexed: 04/19/2023] Open
Abstract
BACKGROUND The architecture of retrorectal fasciae is complex, as determined by different anatomical concepts. The aim of this study was to examine the anatomical characteristics of the inferomedial extension of the urogenital fascia (UGF) involving the pelvis to explore its relationship with the adjacent fasciae. Furthermore, we have expounded on the clinical application of UGF. METHOD For our study, we examined 20 adult male pelvic specimens fixed in formalin, including 2 entire pelvic specimens and 18 semipelvic specimens. Our department has performed 466 laparoscopic rectal cancer procedures since January 2020. We reviewed the surgical videos involving UGF preservation and analyzed the anatomy of the UGF. RESULTS The bilateral hypogastric nerves ran between the visceral and parietal layers of the UGF. The visceral fascia migrated ventrally at the fourth sacral vertebra, which formed the rectosacral fascia together with the fascia propria of the rectum; the parietal layer continually extended to the pelvic diaphragm, terminating at the levator ani muscle. At the third to fourth sacral vertebra level, the two layers constituted the lateral ligaments. CONCLUSION The double layers of the UGF are vital structures for comprehending the posterior fascia relationship of the rectum. The upper segment between the fascia propria of the rectum and the visceral layer has no evident nerves or blood vessels and is regarded as the " holy plane" for the operation.
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Affiliation(s)
- Yi Li
- First Department of General Surgery, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, 710000, China
| | - Yan-Bing Ma
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
| | - Yang Xiao
- Department of Anorectal Surgery, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, 710000, China
| | - Guang-Cun Shi
- Medical School of Yan'an University, Yan'an, Shaanxi, 716000, China
| | - Ya-Min Zhao
- Department of General Surgery, Shandong Provincial Linyi Jinluo Hospital, Linyi, Shandong, 276000, China
| | - Jin-Song Zhou
- Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, China
| | - Cong Tong
- First Department of General Surgery, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, 710000, China
| | - Rui-Ting Liu
- First Department of General Surgery, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, 710000, China
| | - Li-Kun Yan
- First Department of General Surgery, Shaanxi Provincial People's Hospital, Xi'an, Shaanxi, 710000, China.
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Liufu R, Chen Y, Wan XX, Liu RT, Jiang W, Wang C, Peng JM, Weng L, Du B. Sepsis-induced Coagulopathy: The Different Prognosis in Severe Pneumonia and Bacteremia Infection Patients. Clin Appl Thromb Hemost 2023; 29:10760296231219249. [PMID: 38126337 DOI: 10.1177/10760296231219249] [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] [Indexed: 12/23/2023] Open
Abstract
Sepsis-induced coagulopathy (SIC) is a critical condition in sepsis patients, with varying outcomes depending on the type of infection. This study aims to analyze the prognosis of different infections in SIC cohort. A retrospective cohort study was conducted on 525 patients diagnosed with SIC in the intensive care unit from December 2013 to December 2022. These patients were divided into four groups: a non-pneumonia or bacteremia group, a severe pneumonia group, a bacteremia group, and a severe pneumonia concomitant with bacteremia group. The 28-day mortality was 18% (49/271) in the other infections group, 31% (33/106) in the lung infections group, 23% (29/126) in the blood infections group and 36% (8/36) in the lung and blood co-infections group, respectively. Pearson correlation analysis showed that procalcitonin (PCT) correlated strongly with all detected hemostatic markers (p < 0.001). The 28-day mortality rate in Lung infections group was significantly higher (p = 0.019), while Blood infections group had a higher incidence of disseminated intravascular coagulation (p = 0.011). By multivariable model analyses, longer duration of ventilation (p = 0.039) and severe pneumonia (p = 0.040) are risk factors associated with mortality. Different infections, including Lung and Blood infections, indicated different conditions in vivo. Longer duration of ventilation is associated with mortality, while Lung infections indicated higher 28-day mortality rate.
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Affiliation(s)
- Rong Liufu
- State Key Laboratory of Complex Severe and Rare Diseases, Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
- Department of Cardiovascular Intensive Care Unit, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of South China Structural Heart Disease, Guangdong Academy of Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yan Chen
- State Key Laboratory of Complex Severe and Rare Diseases, Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Xi-Xi Wan
- State Key Laboratory of Complex Severe and Rare Diseases, Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Rui-Ting Liu
- State Key Laboratory of Complex Severe and Rare Diseases, Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Wei Jiang
- State Key Laboratory of Complex Severe and Rare Diseases, Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - ChYao Wang
- State Key Laboratory of Complex Severe and Rare Diseases, Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Jin-Min Peng
- State Key Laboratory of Complex Severe and Rare Diseases, Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Li Weng
- State Key Laboratory of Complex Severe and Rare Diseases, Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Bin Du
- State Key Laboratory of Complex Severe and Rare Diseases, Medical ICU, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
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Ye L, Jiang JL, Xu J, Liu RT, Tian YQ, Zang QQ, Cao JY, Mao MG. Characterization of CLCN5 and Expression Profile under Low-Salinity Stress in Takifugu rubripes. PAK J ZOOL 2022. [DOI: 10.17582/journal.pjz/20200828090859] [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: 11/24/2022]
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Liu RT, Zhang ZQ, Hao JR, Weng YF, Xu Q, Zhang QR, Yang F, Sun KJ, Lu GM. [The analysis of structural magnetic resonance imaging manifestation of hippocampus based on voxel and spherical harmonic surface morphometry in mesial temporal lobe epilepsy]. Zhonghua Yi Xue Za Zhi 2021; 101:3024-3028. [PMID: 34638195 DOI: 10.3760/cma.j.cn112137-20210203-00337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the hippocampal volume and local surface morphology changes in patients with mesial temporal lobe (mTLE) using the voxel-based morphometry and spherical harmonic methods respectively. Methods: A total of 66 patients (31 males and 35 females, age range from 17 to 48 (28±8) years) with mTLE and 80 age-and gender-matched controls (38 males and 42 females, age range from 19 to 46 (27±7) years) were retrospectively collected from July 2009 to February 2019 at Jinling hospital.. High resolution structural MRI of the whole brain, three-dimensional T1-weighted data(3DT1) were acquired from each subject. The changes of hippocampal volume and surface morphology were evaluated between mTLE groups and controls for observing the hippocampal atrophy pattern by using voxel-based morphometry and spherical harmonic shape descriptions point distribution model respectively. Pearson correlation analysis was conducted for observing the relationship between the morphological changes of hippocampus and disease duration. Results: Compared with the controls, hippocampal volume on the affected side in patients with mTLE was significantly reduced (Z-score:-1.55±0.57 vs 0.38±0.58, P<0.001) and negatively correlated with disease duration (r=-0.297, P=0.016). Furthermore, surface morphology analysis subtly showed that the atrophy of the affected hippocampus in patients with mTLE mainly located in the head, mesial lateral part and posterior tail of the hippocampus. Their displacement values were negatively correlated with disease duration (r=-0.336, P=0.006) and positively associated with the hippocampal grey matter volume (r=0.336, P=0.006). Conclusions: Voxel-based morphometry analysis reveals a global reduction in hippocampal volume, while the morphological measurement method based on surface shape can describe the local morphological changes of hippocampal atrophy.
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Affiliation(s)
- R T Liu
- School of Medical Imaging, Xuzhou Medical University, Xuzhou 221004, China
| | - Z Q Zhang
- Department of Diagnostic Radiology, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - J R Hao
- Department of Diagnostic Radiology, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - Y F Weng
- Department of Diagnostic Radiology, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - Q Xu
- Department of Diagnostic Radiology, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - Q R Zhang
- Department of Diagnostic Radiology, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - F Yang
- Department of Neurology, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - K J Sun
- Department of Neurosurgery, General Hospital of Eastern Theater Command, Nanjing 210002, China
| | - G M Lu
- School of Medical Imaging, Xuzhou Medical University, Xuzhou 221004, China
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Liu RT, Li W, Guo D, Yang CL, Ding J, Xu JX, Duan RS. Natural killer cells promote the differentiation of follicular helper T cells instead of inducing apoptosis in myasthenia gravis. Int Immunopharmacol 2021; 98:107880. [PMID: 34174703 DOI: 10.1016/j.intimp.2021.107880] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 12/20/2020] [Revised: 06/06/2021] [Accepted: 06/10/2021] [Indexed: 02/07/2023]
Abstract
Recent evidence has shown that natural killer (NK) cells have an immunoregulatory function in the pathogenesis of myasthenia gravis (MG). In this study, the phenotype and function of NK cell subsets in peripheral blood of new-onset MG (N-MG) and stable MG (S-MG) patients were explored. Circulating CD56dim and CD56bright NK cells were increased and decreased, respectively, in patients with N-MG and S-MG compared with healthy control (HC). Moreover, all circulating NK cell subsets from N-MG patients showed significantly lower expression of activating receptor NKG2D and production of Interferon (IFN) -γ than that from HC. The killing effects of NK cells on CD4+ T cells and Tfh cells were impaired in MG patients, whereas, they promoted the differentiation and activation of Tfh cells. These data indicated that the immune-regulation of NK cells on CD4+ T cells and Tfh cells in MG patients was abnormal, which may contribute to the immune-pathological mechanism of MG.
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Affiliation(s)
- Rui-Ting Liu
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China; Department of Neurology, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, PR China
| | - Wei Li
- The Neurosurgical Department, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, PR China
| | - Dong Guo
- Department of Neurology, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, PR China
| | - Chun-Lin Yang
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China
| | - Jie Ding
- Central Laboratory of Liaocheng People's Hospital, Liaocheng, Shandong 252000, PR China
| | - Jian-Xin Xu
- Department of Neurology, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, PR China
| | - Rui-Sheng Duan
- Department of Neurology, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan 250014, PR China; Department of Neurology, The First Affiliated Hospital of Shandong First Medical University, Jinan 250014, PR China; Shandong Institute of Neuroimmunology, Jinan 250014, PR China.
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Mao MG, Xu J, Liu RT, Ye L, Wang R, Jiang JL. Fas/FasL of pacific cod mediated apoptosis. Dev Comp Immunol 2021; 119:104022. [PMID: 33482239 DOI: 10.1016/j.dci.2021.104022] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/13/2021] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Fas and Fas ligand (FasL) pathway plays important roles in virus defense and cell apoptosis. In our previous work, nervous necrosis virus (NNV) was discovered in Pacific cod (Gadus macrocephalus), and the Fas ligand (PcFasL) was up-regulated when NNV outbreak, however, signal transmission of Fas/FasL in fish are still unclear. In the present study, Pacific cod Fas (PcFas), PcFasL and Fas-associating protein with a novel death domain (PcFADD) were characterized. The predicted protein of PcFas, PcFasL and PcFADD includes 333 aa, 90 aa and 93 aa, separately. 3-D models of PcFas, PcFasL and PcFADD were well constructed based on reported templates, respectively, even though the sequence homology with other fish is very low. The transcript levels of PcFas increased gradually from 15 day-post hatching (dph) to 75dph. PcFas was significantly up-regulated when cod larvae had NNV symptoms at 24dph, 37dph, 46dph, 69dph, and 77dph. Subcellular localization revealed that PcFasL was located in the cytoplasm, while PcFas was mainly located in the cell membrane. Exogenous expressed PcFasL of 900 μg/mL could kill the Epithelioma papulosum cyprinid (EPC) cells by MTT test, but low concentration has no effect on the cells. qPCR analysis showed that overexpression of PcFas could significantly up-regulate the expression of genes related to Fas/FasL signaling pathway, including bcl-2, bax, and RIP3, while overexpression of PcFasL significantly up-regulate the expression of caspase-3, caspase-9, and MLKL. Overexpression of PcFas or PcFasL could induce EPC apoptosis significantly by flow cytometry, which was consistent with the results of caspase-3 mRNA level increasing. The results indicated that NNV could induce apoptosis through Fas/FasL signal pathway.
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Affiliation(s)
- Ming-Guang Mao
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Jia Xu
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Rui-Ting Liu
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Lin Ye
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Rui Wang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Jie-Lan Jiang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
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Luo J, Liu BS, Zhang XR, Liu RT. A new fluorescent sensor constructed by Eu3+ post-functionalized metal-organic framework for sensing Ag+ with high selectivity and sensitivity in aqueous solution. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129518] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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12
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Zhang YQ, Liu RT, Pan JQ, Xu P, Li XY, Yu LQ, Gao HY, Jiang YF. [Myelodysplastic syndrome with chromosome 5q deletion and philadelphia chromosome: case report and literatures review]. Zhonghua Xue Ye Xue Za Zhi 2021; 41:940-942. [PMID: 33333699 PMCID: PMC7767816 DOI: 10.3760/cma.j.issn.0253-2727.2020.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Y Q Zhang
- Department of Hematology, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - R T Liu
- Department of Hematology, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - J Q Pan
- Department of Hematology, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - P Xu
- Department of Hematology, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - X Y Li
- Department of Hematology, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - L Q Yu
- Department of Hematology, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - H Y Gao
- Department of Hematology, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Y F Jiang
- Department of Hematology, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China
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Luo J, Liu BS, Zhang XR, Liu RT. A novel fluorescent sensor with highly response of Cu2+ based on Eu3+ post-modified metal-organic framework in aqueous media. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127347] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Luo J, Liu BS, Zhang XR, Liu RT. A Eu3+ post-functionalized metal-organic framework as fluorescent probe for highly selective sensing of Cu2+ in aqueous media. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.09.091] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Mao MG, Chen Y, Liu RT, Lü HQ, Gu J, Jiang ZQ, Jiang JL. Transcriptome from Pacific cod liver reveals types of apolipoproteins and expression analysis of AFP-IV, structural analogue with mammalian ApoA-I. Comp Biochem Physiol Part D Genomics Proteomics 2018; 28:204-212. [PMID: 30366214 DOI: 10.1016/j.cbd.2018.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 10/04/2018] [Indexed: 12/15/2022]
Abstract
Apolipoproteins (Apos), transporting the lipids through the lymphatic and circulatory systems, are associated with kinds of diseases. Additionally, type IV antifreeze protein (AFP-IV) was related evolutionarily with apolipoproteins. However, the information of Apos in fish was limited. In this study, ApoA-I, ApoA-I-2, ApoA-IV, Apo E, ApoB-100-like and AFP-IV were sequenced from Pacific cod (Gadus macrocephalus) liver transcriptome using Illumina HiSeq 2000, and their 3-D models were constructed based on the most confidence templates ever reported in mammals. Interestingly, the model of G. macrocephalus AFP-IV, named GmAFPIV, is quite similar to the structure of ApoA-I. GmAFPIV includes 689 bases with a complete open reading frame encoding 125 amino acids. Sequence alignment of GmAFPIV showed 30% to 50% similarity with that of other species except Gadus sp. Expression levels of GmAFPIV were found in a decreasing manner in liver, intestine, gill, brain and gonad. Heterologously expression of the GmAFPIV protein was expressed in Escherichia coli and purified to immunize New Zealand rabbits. The survivors of E. coli in 60 μg/mL of GmAFPIV are more than that in the 30 μg/mL group after stored in -20 °C and -80 °C, indicating high concentration of GmAFPIV could protect E. coli avoiding the damage from ice crystal. The subcellular localization of GmAFPIV showed that the green fluorescence was mainly observed in the cytoplasm, indicating GmAFPIV play roles in the cytoplasm. It was concluded that GmAFPIV may function not only as an antifreeze protein but also as an apolipoprotein transporting lipids in fish.
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Affiliation(s)
- Ming-Guang Mao
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fish Applied Biology and Aquaculture in North China, Liaoning Province, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian 116023, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Yu Chen
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fish Applied Biology and Aquaculture in North China, Liaoning Province, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian 116023, China
| | - Rui-Ting Liu
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fish Applied Biology and Aquaculture in North China, Liaoning Province, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian 116023, China
| | - Hui-Qian Lü
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fish Applied Biology and Aquaculture in North China, Liaoning Province, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian 116023, China
| | - Jie Gu
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fish Applied Biology and Aquaculture in North China, Liaoning Province, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian 116023, China
| | - Zhi-Qiang Jiang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fish Applied Biology and Aquaculture in North China, Liaoning Province, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian 116023, China
| | - Jie-Lan Jiang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, Key Laboratory of Fish Applied Biology and Aquaculture in North China, Liaoning Province, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian 116023, China.
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Mao MG, Jiang JL, Jiang ZQ, Liu RT, Zhang QY, Gui JF. Molecular characterization of caspase members and expression response to Nervous Necrosis Virus outbreak in Pacific cod. Fish Shellfish Immunol 2018; 74:559-566. [PMID: 29317308 DOI: 10.1016/j.fsi.2018.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2017] [Revised: 01/01/2018] [Accepted: 01/05/2018] [Indexed: 06/07/2023]
Abstract
Multiple functions of caspases include normal cell turnover, proper development and function of the immune system, hormone-dependent atrophy, embryonic development and chemical-induced cell injury. During artificial propagation of Pacific cod, Gadus macrocephalus, high mortality occurred during early development stages. Here, we performed various analyses on the cDNA and protein sequences of six different G. macrocephalus caspases namely GmCasp3, 6, 7, 8, 9 and 10, and tried to investigate the contributions of caspase family to the development and Nervous Necrosis Virus (NNV) resistance. Sequence analysis of GmCaspase proteins showed that each caspase shared conserved domains like "HG", "QACXG (X for R, G or Q)" and "GSWF" except GmCasp10. Sequence alignment and phylogenetic tree showed that GmCasp8 and GmCasp10 were quite different from those of other fishes. 3-D models indicated that structure of GmCasp3 is very conservative, but GmCasp6, 7, 8, 9 and 10 are less conservative. Tissue distribution analysis showed that six Gmcaspases mRNA transcripts were detected in tissues of intestine, gill, thymus, head-kidney and spleen with different abundance, but Gmcasp7 were not detected in the brain. GmCasp3 transcript was kept at very low level in the early development stages, while the expression levels of GmCasp6, 7, 8, 10 were different at various development stages. GmCasp8 level seemed to be much higher than other caspases in the heads of 65dph and 75dph juveniles. To understand the role of caspases during NNV outbreak, modulation in expression of each Gmcaspases were investigated. The results showed that GmCasp3 transcript level increased significantly when NNV broke out, while GmCasp7, 8, 9 and 10 in cod heads decreased obviously at 69dph and 77dph. The results suggest that caspases in Pacific cod should be diverse in their structure and function, and their unique features and response to NNV outbreak add more evidences for the specificity of immune system in Pacific cod.
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Affiliation(s)
- Ming-Guang Mao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; Key Laboratory of Mariculture and Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 262306, China
| | - Jie-Lan Jiang
- Key Laboratory of Mariculture and Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 262306, China
| | - Zhi-Qiang Jiang
- Key Laboratory of Mariculture and Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 262306, China
| | - Rui-Ting Liu
- Key Laboratory of Mariculture and Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 262306, China
| | - Qi-Ya Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; Key Laboratory of Mariculture and Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 262306, China
| | - Jian-Fang Gui
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; Key Laboratory of Mariculture and Stock Enhancement in North China's Sea, Ministry of Agriculture, Dalian Ocean University, Dalian 262306, China.
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Fang BZ, Cai WB, Liu RT. [A case report of PPP syndrome]. Zhonghua Nei Ke Za Zhi 2018; 57:138-140. [PMID: 29397601 DOI: 10.3760/cma.j.issn.0578-1426.2018.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Cheng MJ, Cheng MJ, Wei QM, Yang LH, Liu RT, Li ST. [Clinical study on the relations of obstructive sleep apnea hypopneasyndrome and the degree and prognosis of coronary lesions]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:765-769. [PMID: 29771039 DOI: 10.13201/j.issn.1001-1781.2017.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Indexed: 06/08/2023]
Abstract
Objective:The aim of this study is to discuss the relations between obstructive sleep apnea hypopnea syndrome (OSAHS) and severity and prognosis of coronary artery disease. Method:The OSAHS patients were divided into mild, moderate and severe groups according to Results of sleep monitoring. The severity of coronary artery lesion in each group was compared by counting the numbers of the lesion extension of coronary artery, calculating the Gensin score and evaluating the Thromblysis in myocardial infarction. The patients were followed up within 2 years, the incidence of major clinical cardiac adverse events was compared between each groups. Result:Three groups confirmed the numbers of the lesion extension of coronary artery and Gensin score increased, the Thromblysis in myocardial infarction reduced with the seriousness of OSAHS by coronary angiography (P<0.05). There was no statistical significance in compliance for oral use of three groups (P>0.05). Incidence of the main adverse cardiac events during two years in three groups were16.28%, 29.36% and 44.26%. Incidence of the main adverse cardiac events increased with the seriousness of OSAHS (P<0.05). Conclusion:The coronary artery pathologic change severity aggravated with the seriousness of OSAHS,and the incidence of the main adverse cardiac events increased with the seriousness of OSAHS.
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Affiliation(s)
- M J Cheng
- Department of Cardiology, Xingtai People's Hospital of Hebei, Xingtai, 054000, China
| | - M J Cheng
- the Second Hospital of Hebei Medical University
| | - Q M Wei
- Department of Cardiology, Xingtai People's Hospital of Hebei, Xingtai, 054000, China
| | - L H Yang
- Department of Cardiology, Xingtai People's Hospital of Hebei, Xingtai, 054000, China
| | - R T Liu
- Department of Cardiology, Xingtai People's Hospital of Hebei, Xingtai, 054000, China
| | - S T Li
- Department of Cardiology, Xingtai People's Hospital of Hebei, Xingtai, 054000, China
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Liu RT, Wang GR, Liu C, Qiu J, Yan LK, Li XJ, Wang XQ. RNAi-mediated downregulation of DNA binding protein A inhibits tumorigenesis in colorectal cancer. Int J Mol Med 2016; 38:703-12. [PMID: 27430286 PMCID: PMC4990294 DOI: 10.3892/ijmm.2016.2662] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 11/21/2015] [Accepted: 06/22/2016] [Indexed: 12/14/2022] Open
Abstract
DNA binding protein A (dbpA) belongs to the Y-box binding protein family and has been reported to play an important role in carcinogenesis. Our previous study demonstrated that the knockdown of dbpA in gastric cancer cells inhibited cell proliferation by modulating the cell cycle. However, the role of dbpA in human colorectal cancer (CRC) remains unclear. In this study, immunohistochemical (IHC) staining and clinicopathological parameter analysis were employed to detect dbpA expression in 44 paired CRC samples and 7 CRC cell lines. Lentivirus-mediated short hairpin RNA (shRNA) was used to silence dbpA, and the effects of dbpA knockdown on cell proliferation were determined by MTT assay, colony formation assay and flow cytometry. Furthermore, a xenograft model was established to observe tumor growth in vivo. Functional analysis indicated that dbpA was overexpressed in the CRC tissues and cell lines, and a high dbpA expression was associated with the depth of invasion (p<0.001), the degree of differentiation (p<0.001), lymphatic metastasis (p<0.001) and vessel invasion (p<0.001). The suppression of dbpA expression resulted in decreased cell proliferation in vitro and tumor growth in vivo, and it induced cell cycle arrest and promoted the apoptosis of the CRC cells. As a whole, our findings illustrate the crucial role of dbpA in colorectal tumorigenesis. Thus, dbpA may be used as a novel and potent therapeutic target in CRC.
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Affiliation(s)
- Rui-Ting Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Guo-Rong Wang
- Department of General Surgery, The Third Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710068, P.R. China
| | - Chang Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Jian Qiu
- Department of General Surgery, The Third Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710068, P.R. China
| | - Li-Kun Yan
- Department of General Surgery, The Third Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710068, P.R. China
| | - Xiao-Jun Li
- Department of General Surgery, The Third Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710068, P.R. China
| | - Xiao-Qiang Wang
- Department of General Surgery, The Third Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710068, P.R. China
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Liu RT, Wang XH, Zhang Y, Wang MY, Gao MM, Wang SG. Optimization of operation conditions for the mitigation of nitrous oxide (N2O) emissions from aerobic nitrifying granular sludge system. Environ Sci Pollut Res Int 2016; 23:9518-9528. [PMID: 26841778 DOI: 10.1007/s11356-016-6178-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Accepted: 01/25/2016] [Indexed: 06/05/2023]
Abstract
The optimization of operation parameters is a key consideration to minimize nitrous oxide (N2O) emissions in biological nitrogen removal processes. So far, different parameters have only been investigated individually, making it difficult to compare their specific effects and combined influences. In this study, we applied the Plackett-Burman (PB) multifactorial experimental design and response surface methodology (RSM) analysis to find the optimized condition for the mitigation of N2O release in a nitrifying granular sludge system. Seven parameters (temperature, pH, feeding strategy, C/N ratio, aeration rate, Cu(2+) concentration, and aeration mode) were tested in parallel. Five of them (other than chemical oxygen demand/nitrogen (C/N) ratio and Cu(2+) concentration) were selected as influential factors. Since the type of feeding strategies and aeration modes cannot be quantified, continuous feed strategy and anoxic/oxic aeration mode were applied for the following study. Influences of temperature, pH, and aeration rate on N2O emissions were tested with RSM analysis to further investigate the mutual interactions among the parameters and to identify the optimal values that would minimize N2O release. Results showed the minimum emission value could be obtained under the temperature of 22.3 °C, pH of 7.1 and aeration rate of 0.20 m(3)/h. Predicted results were then verified by subsequent validation experiments. The estimated N2O emission value of each design by RSM was also observed in good relationships with experimental result.
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Affiliation(s)
- Rui-Ting Liu
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Xin-Hua Wang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China.
| | - Yan Zhang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Ming-Yu Wang
- State Key Laboratory of Microbial Technology, School of Life Sciences, Shandong University, Jinan, 250100, China
| | - Ming-Ming Gao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
| | - Shu-Guang Wang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China
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Abstract
BACKGROUND A basic phenomenological question of much theoretical and empirical interest is whether the latent structure of depression is dimensional or categorical in nature. Prior taxometric studies of youth depression have yielded mixed findings. In a step towards resolving these contradictory findings, the current taxometric investigation is the first to utilize a recently developed objective index, the comparison curve fit index, to evaluate the latent structure of major depression in an epidemiological sample of children and adolescents. METHOD Data were derived from Mental Health of Children and Young People in Great Britain surveys. Participants were administered a structured diagnostic interview to assess for current depression. Parents (n = 683) were interviewed for children aged 5-16 years, and child interviews (n = 605) were conducted for those aged 11-16 years. RESULTS MAMBAC (mean above minus below a cut), MAXEIG (maximum eigenvalue) and L-Mode (latent mode) analyses provided convergent support for a dimensional latent structure. CONCLUSIONS The current findings suggest that depression in youth is more accurately conceptualized as a continuous syndrome rather than a discrete diagnostic entity.
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Affiliation(s)
- R T Liu
- Department of Psychiatry and Human Behavior,Alpert Medical School of Brown University,Bradley Hospital,East Providence,RI,USA
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Zhang Y, Gao MM, Wang XH, Wang SG, Liu RT. Enhancement of oxygen diffusion process on a rotating disk electrode for the electro-Fenton degradation of tetracycline. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.08.134] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [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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Zhang H, Liu R, Zhou X. FeCl3·6H2O-catalyzed selective reduction of allylic halides to alkenes with concomitant oxidation of benzylic alcohols to aldehydes. Sci China Chem 2013. [DOI: 10.1007/s11426-013-5042-2] [Citation(s) in RCA: 3] [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] [Indexed: 11/30/2022]
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Yang GP, Liu RT, Ren C, Hou L, Wang YY, Shi QZ. Silver(I)/cobalt(II) complexes with mixed V-shaped polycarboxylate and rod-like N-donor ligands: Syntheses, structures and properties. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.07.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Liu B, Ren C, Wang Y, Hou L, Liu R, Shi Q. Flexible 3D porous metal-organic framework exhibiting selective adsorption for H2O over organic solvents. Sci China Chem 2012. [DOI: 10.1007/s11426-011-4395-7] [Citation(s) in RCA: 4] [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] [Indexed: 10/14/2022]
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Liu B, Yang GP, Wang YY, Liu RT, Hou L, Shi QZ. Two new pH-controlled metal–organic frameworks based on polynuclear secondary building units with conformation-flexible cyclohexane-1,2,4,5-tetracarboxylate ligand. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2010.12.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [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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Liu RT, Hou L, Liu B, Zhang YN, Wang YY, Shi QZ. Structural diversity, photoluminescence and magnet properties of complexes based on a V-shaped polycarboxylate. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2010.10.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Liu JQ, Liu B, Wang YY, Liu P, Yang GP, Liu RT, Shi QZ, Batten SR. An Unusual 3D Entangled Co(II) Coordination Polymer Directed by Ferromagnetic Molecular Building Block. Inorg Chem 2010; 49:10422-6. [DOI: 10.1021/ic101286j] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jian-Qiang Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico−Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
- Guangdong Medical College, School of Pharmacy, Dongguan, 523808, P. R. China
| | - Bin Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico−Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Yao-Yu Wang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico−Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Ping Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico−Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Guo-Ping Yang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico−Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Rui-Ting Liu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico−Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Qi-Zhen Shi
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico−Inorganic Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an 710069, P. R. China
| | - Stuart R. Batten
- School of Chemistry, Monash University, Victoria 3800, Australia
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Zhang LX, Fan CJ, Liu P, Yang GP, Ren C, Liu RT. Temperature-controlled 1D helical and discrete Er(III) complexes based on benzimidazole-5,6-dicarboxylic acid. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2010.04.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Yang GP, Wang YY, Zhang WH, Fu AY, Liu RT, Lermontova EK, Shi QZ. A series of Zn(ii) coordination complexes derived from isomeric phenylenediacetic acid and dipyridyl ligands: syntheses, crystal structures, and characterizations. CrystEngComm 2010. [DOI: 10.1039/b915889h] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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31
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Wen GL, Wang YY, Zhang WH, Ren C, Liu RT, Shi QZ. Self-assembled coordination polymers of V-shaped bis(pyridyl)thiadiazole dependent upon the spacer length and flexibility of aliphatic dicarboxylate ligands. CrystEngComm 2010. [DOI: 10.1039/b919381m] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Dong Z, Zhang W, Wang Y, Liu R, Ren C, Shi Q. Three new zinc(II) coordination polymers: Modulation of extended structures driven by assistant ligands. Sci Bull (Beijing) 2009. [DOI: 10.1007/s11434-009-0644-y] [Citation(s) in RCA: 5] [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] [Indexed: 10/20/2022]
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33
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Bian GX, Li GG, Yang Y, Liu RT, Ren JP, Wen LQ, Guo SM, Lu QJ. Madecassoside reduces ischemia-reperfusion injury on regional ischemia induced heart infarction in rat. Biol Pharm Bull 2008; 31:458-63. [PMID: 18310910 DOI: 10.1248/bpb.31.458] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [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
Madecassoside (MA), one of the principle terpenoids in Centella asiatica, has shown protect effect on isolated rat hearts and isolated cardiomyocytes against reperfusion injury in our previous studies. The aim of this study is to investigate if MA also protected against myocardial ischemia-reperfusion injury in vivo. The ischemia infarction model was established in rats. Left ventricular function was monitored during the ischemia-reperfusion period by a multi-channel recorder. After the ischemia-reperfusion process the infarcted areas were assessed. The levels of lactate dehydrogenase (LDH), creatinephosphokinase (CK), malondialdehyde (MDA), super-oxide dismutase (SOD) and C-reactive protein (CRP) in serum were determined. Cardiomyocytic apoptosis was measured by terminal-deoxynucleotidyl transferase mediated nick end labeling (TUNEL) staining. Pre-treatment with MA (50, 10 mg/kg) attenuated myocardial damage characteristic of decreasing infarct size, decreasing LDH and CK release. Activities of SOD were increased and MDA level increased obviously in control group whereas pretreatment with MA blunted the decrease of SOD activity, markedly reduced the level of MDA and the activity of CRP, and relieved myocardial cell apoptosis. These results suggest that MA has the protective effect on myocardial ischemia-reperfusion injury. This protection ability possibly due to its anti-lipid peroxidation, anti-inflammation and anti-apoptosis function and the enhancement of SOD activity.
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Affiliation(s)
- Guang-Xing Bian
- Department of Pharmacology and Toxicology, Beijing Institute of Radiation Medicine, Beijing 100850, People's Republic of China
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Zhang ZX, Li YR, Liu RT, Chen ZX, Weng LH, Zhou XG. Insertion reaction of elemental sulfur into the Ln–C bond: Synthesis and characterization of [(C5H4SiMe2tBu)2Ln(μ-SR)]2 (R=Me, Ln=Yb, Er, Dy, Y; R=nBu, Ln=Yb, Dy). Polyhedron 2007. [DOI: 10.1016/j.poly.2007.07.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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35
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Liu RT, Liaw SS, Maini PK. Two-stage Turing model for generating pigment patterns on the leopard and the jaguar. Phys Rev E Stat Nonlin Soft Matter Phys 2006; 74:011914. [PMID: 16907134 DOI: 10.1103/physreve.74.011914] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2005] [Revised: 03/12/2006] [Indexed: 05/11/2023]
Abstract
Based on the results of phylogenetic analysis, which showed that flecks are the primitive pattern of the felid family and all other patterns including rosettes and blotches develop from it, we construct a Turing reaction-diffusion model which generates spot patterns initially. Starting from this spotted pattern, we successfully generate patterns of adult leopards and jaguars by tuning parameters of the model in the subsequent phase of patterning.
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Affiliation(s)
- R T Liu
- Department of Physics, National Chung-Hsing University, 250 Guo-Kuang Road, Taichung, Taiwan
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36
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Zhang CM, Liu RT, Chen ZX, Zhou XG. Synthesis and Characterization of [Cp2Ln(μ-η1:η2-OC(SR)CPh2)]2 (R=Bn, Ph and Ln=Yb, Er, Y). CHINESE J CHEM 2006. [DOI: 10.1002/cjoc.200690044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Abstract
We simulate the patterns on the hard wings of lady beetles using a reaction-diffusion equation based on the Turing model. A part of a spherical surface is used to approximate the geometry of the hard wings. Various patterns common to lady beetles in Taiwan can be produced on this curved surface by adjusting the parameters of the model.
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Affiliation(s)
- S S Liaw
- Department of Physics, National Chung-Hsing University, Taichung 402, Taiwan
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38
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Chen SW, Liang JA, Yang SN, Liu RT, Lin FJ. The prediction of late rectal complications following the treatment of uterine cervical cancer by high-dose-rate brachytherapy. Int J Radiat Oncol Biol Phys 2000; 47:955-61. [PMID: 10863065 DOI: 10.1016/s0360-3016(00)00559-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.5] [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: 10/17/2022]
Abstract
PURPOSE This study aimed to correlate patient, treatment, and dosimetric factors with the risk of late rectal sequelae in patients with uterine cervical cancer treated with external beam radiation therapy (EBRT) and high dose rate intracavitary brachytherapy (HDRICB). METHODS AND MATERIALS From September 1992 to December 1995, a total of 128 patients with uterine cervical cancer, who were treated and survived more than 12 months, were evaluated. After EBRT with 40-44 Gy/20-22 Fr/4-5 weeks to the whole pelvis, the dose was boosted up to 54-58 Gy with central shielding for patients with bilateral parametria of Stage IIb or greater. HDRICB consisted of three to four insertions at doses of 5-7.2 Gy (to Point A) at intervals of 1 week. Patient and treatment factors were analyzed using logistic regression analysis and the cumulative rectal biologic equivalent dose (CRBED) was calculated. RESULTS After 30-75 months of follow-up (median, 43 months), 38 patients (29.7%) had late rectal sequelae. Patients who had Stage IIb-IVa disease, cumulative rectal dose (external RT + total ICRU rectal dose) greeater than 65 Gy, or age greater than 70 years had a high risk of developing late rectal sequelae. When 110 Gy was used as the cut-off value, 19.6% (10 of 51) of patients whose CRBED was less than 110 Gy had rectal complications, while 36.4% (28/77) of patients whose CRBED was greater than 110 Gy developed rectal complications. CONCLUSION Risk factors of late rectal complications were advanced stage, age greater than 70 years, and cumulative rectal dose of greater than 65 Gy.
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Affiliation(s)
- S W Chen
- Department of Radiation Therapy and Oncology, Shin Kong Memorial Hospital, Taipai, Taiwan
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39
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Wang PW, Wang ST, Liu RT, Chien WY, Tung SC, Lu YC, Chen HY, Lee CH. Levothyroxine suppression of thyroglobulin in patients with differentiated thyroid carcinoma. J Clin Endocrinol Metab 1999; 84:4549-53. [PMID: 10599717 DOI: 10.1210/jcem.84.12.6190] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
For patients with differentiated thyroid carcinoma, the appropriate degree of TSH suppression by levothyroxine (L-T4) is still unknown. To find the target level of TSH suppression, we analyzed the relationship between the degree of TSH suppression determined by third generation assay and thyroglobulin (Tg) response during the titration of the dosage of L-T4. Ninety-two patients with differentiated thyroid carcinoma (19 males and 73 females; age, 40.5+/-13.5, mean +/- SD) were included. All of the recruited patients had near-total thyroidectomy, 30-150 mCi 131I thyroid ablation, and negative Tg autoantibodies. They were classified into 3 groups. Group A was composed of 25 patients with local or distant relapse. Group B was composed of 12 patients without clinically detectable relapse, but Tg levels either above 2 ng/mL under L-T4 suppression or above 3 ng/mL off L-T4 therapy. Group C included 55 patients who had no active disease and Tg levels below 2 and 3 ng/mL during and off L-T4 suppression, respectively. Serum TSH and Tg were measured simultaneously at the end of 8-12 weeks of a certain dose of L-T4 therapy during dosage titration and also after withdrawal of L-T4 for 4-6 weeks for the total body scan. Wilcoxon signed ranks test was used to compare paired samples of Tg, and Spearman rank correlation was used to determine the correlation of relative changes in TSH to changes in Tg calculated by individual. The results showed that 1) Tg levels were significantly higher during the period off L-T4 therapy than on L-T4, therapy in all 3 groups (P < 0.01); 2) during L-T4, therapy, within the same treatment course, mean Tg levels were higher when TSH levels were normal than when TSH levels were suppressed, statistically significant in group A (P = 0.001), nonsignificant in group B (P = 0.09), and nonsignificant in group C (P = 0.30); and 3) when TSH was suppressed below normal, there was no correlation between the relative changes in TSH and Tg by individual in all 3 groups (P > 0.05). The data suggest a stratified postoperative thyroid hormone management of patients with differentiated thyroid carcinoma. TSH should be lowered to below normal in patients with active disease. If patients are clinically disease free with Tg levels below 2 ng/mL, TSH can be kept within the normal range. For the most controversial group B patients, it is recommended that the TSH be suppressed and be closely followed up.
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Affiliation(s)
- P W Wang
- Department of Internal Medicine, Chang Gung Memorial Hospital, Kaohsiung, Republic of China.
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40
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Abstract
Patients with generalized resistance to thyroid hormone (GRTH) show various organ-specific features, for example mental retardation, growth abnormalities, liver damage, delayed bone age or cardiac disorders. Could this reflect aberrant mutant thyroid hormone receptor beta1 (TRbeta1) heterodimerization with specific TR auxiliary proteins (TRAPs) from different tissues, altering the mutant's ability to transactivate tissue-specific genes? To answer this question, we examined the heterodimerization of TRbeta1 mutants and TRAPs of several rat tissues (cerebrum, cerebellum, liver, heart, lung, spleen, and kidney), and in vitro translated RXRalpha, beta and gamma by electrophoretic gel mobility shift assay (EMSA). Mutant TRbeta1 proteins, synthesized in reticulocyte lysate, were incubated with 32P rat malic enzyme (rME) thyroid hormone response elements (TRE) and nuclear extracts of rat tissues. The TRbeta1 mutants used were Mf (G345R), and GH (R316H). Both have non-detectable T3 binding affinity. GH has weak dominant negative effect and Mf has strong dominant negative effect. Two major bands were observed in EMSA. Cerebrum, cerebellum, lung and liver extracts formed a slower migrating band than a TR homodimer, while kidney extracts formed a faster migrating band, and heart and spleen extracts had both bands. There were no qualitative differences in heterodimerization between TRbeta1wt, and TRbeta1 mutants, when using tissue extracts and DNA in excess ratio to TR. We found that RXRalpha, beta, and gamma were differentially expressed in each rat tissue and formed heterodimer complexes with wild type (WT) TRbeta1. Scatchard analysis of affinity and capacity of the binding of TR-TRAP heterodimers to response elements was performed by competing with 2.5-, 5-, 10-, 25-, and 250-fold excess non-radiolabeled rME-TRE. When using kidney extract, the DNA binding affinity of heterodimers was significantly decreased both in wild type and mutant TRs, suggesting that the DNA binding affinity of the faster migrating band was lower than that of the slower migrating band. Mutant GH, which causes 'pituitary RTH' and shows weak dominant negative effect, tended to form heterodimers with lower DNA binding affinity than TRbeta1wt with all extracts. Mutant Mf, which has strong dominant negative effect, tended to show higher DNA binding affinity than TRbeta1WT. When the data were pooled for all tissues, GH and Mf were found to form heterodimers with significantly lower, or higher, affinity for TREs than TRbeta1wt. These results indicate that: 1) differences of DNA binding affinity of mutant TR-TRAP heterodimers to response elements in DNA play a part in its reduced or strong dominant negative effect; and 2) differences in formation of heterodimers with TRAPs present in tissues do not appear to explain the apparent tissue-specific and mutant-specific variations seen in RTH.
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Affiliation(s)
- T Takeda
- Department of Medicine, the University of Chicago, IL 60637, USA
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Wang PW, Liu RT, Tung SC, Chien WY, Lu YC, Chen CH, Kuo MC, Hsieh JR, Wang ST. Outcome of Graves' disease after antithyroid drug treatment in Taiwan. J Formos Med Assoc 1998; 97:619-25. [PMID: 9795530] [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: 02/09/2023]
Abstract
The outcome of Graves' disease after treatment with antithyroid drugs (ATDs) varies widely among countries, and large-scale studies in Asia are rare. We investigated the associations of various clinical and laboratory features with the outcome of ATD therapy for Graves' disease in Taiwan. A total of 210 patients (177 women, 33 men; mean +/- SD age, 41.7 +/- 15.1 yr) treated with ATD in Taiwan were included. ATD therapy started with methimazole 30 mg daily or propylthiouracil 300 mg daily and was continued until a euthyroid state was achieved. Afterwards, 154 patients received a maintenance dose of ATD alone, while 56 patients received a combination of an ATD and thyroxine (L-T4). Patients were considered to be in remission if they remained in a euthyroid state for more than 2 years after drug withdrawal. The mean follow-up periods were 45.0 +/- 20.9 months for patients with remission and 30.4 +/- 19.8 months for those with relapse. Relapse occurred in 126 (60%) patients during the follow-up period, within 3 months after drug withdrawal in 47 (37%), and within 6 months in 60 (46%). The relapse rate was 100% among patients with two or more previous relapses. Patients with a second occurrence had a higher relapse rate than those with a first occurrence (84% vs 43%). Past history of recurrence, goiter size, thyroid-stimulating hormone level and thyrotropin-binding inhibition immunoglobulin activity at the end of ATD treatment were independently associated with relapse. Prolonged duration of treatment did not yield better results in patients with larger goiters or a history of recurrence, or both. Combination therapy with L-T4 yielded similar results to those achieved with ATD treatment alone. In conclusion, the relapse rate of Graves' disease after ATD treatment in Taiwanese patients was high, especially in those with a history of recurrence. The treatment duration and drug regimen did not affect the outcome.
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Affiliation(s)
- P W Wang
- Department of Internal Medicine, Chang Gung Memorial Hospital, Kaohsiung, Taiwan
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42
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Abstract
The syndrome of resistance to thyroid hormone (RTH) encompasses a heterogeneous group of conditions which are caused by mutations of thyroid hormone receptor beta 1 (TR beta 1). Mutations usually cluster in two regions of the ligand-binding domain. The mutant receptors can inhibit normal receptor activity in a dominant negative manner, consistent with the dominant mode of inheritance of RTH. Recent evidence suggested that this dominant negative effect (DNE) of the RTH mutants involves competition for DNA binding and emphasized the essential role of intact DNA binding activity for mutants in order to exert DNE. However, we found that a Cys73Ser substitution in the DNA-binding domain (DBD) of wild-type produces a TR which can inhibit the transcriptional activation by TR alpha 1, either in the presence or absence of T3, on three different TRE-containing reporter genes, in transient co-transfection studies. Co-expression of TRv alpha 2, a TR alpha splicing variant, can enhance this DNE. However, DNE was not observed on the negatively-regulated TSH alpha Luc reporter gene when wild-type and DBD mutant were co-transfected at equimolar ratios. The DNE of DBD mutant is not reversed by co-transfection with excess retinoid X receptor alpha. DBD mutant alone can also inhibit the transactivation from a TK-luciferase reporter gene either linked with rat malic enzyme thyroid response element, or not. These observations parallel those we previously observed using TRv alpha 2. Our results indicate that a DBD mutant can have DNE, possibly through a mechanism similar to that of TRv alpha 2, which may involve interference with basal transcription factors. The clinical significance of these DBD mutants is currently unclear, but it is logical to expect such mutants do occur in nature.
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Affiliation(s)
- R T Liu
- Department of Medicine, University of Chicago, IL 60637, USA
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Chen CH, Wang PW, Liu RT, Tung SC, Jean WY, Lu YC, Kao CL, Chen L. Ectopic parathyroid adenoma with severe hungry bone syndrome: a case report. Changgeng Yi Xue Za Zhi 1996; 19:196-202. [PMID: 8828266] [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: 02/02/2023]
Abstract
The presentation rate of ectopic mediastinal parathyroid adenoma is about 5 approximately 22%. Ectopic parathyroid adenoma is a common etiology of failed parathyroid surgery as well as a diagnostic challenge to clinicians. We reported a case of ectopic mediastinal parathyroid adenoma. A 20-year-old girl presented with arthralgia for 2 years before hyperparathyroidism was diagnosed. Parathyroid ultrasonography failed to find the lesion, but a vivid uptake in the superior mediastinum was discovered by thallium-201 (Tl-201) and technetium-99m-sestamibi (Tc-99m-MIBI) images. Removal of the ectopic adenoma resulted in severe Hungry bone syndrome, which required a large amount of calcium and phosphorous supply. Later, the patient suffered from bilateral femoral neck fracture due to marked osteoporosis. Bone mineral density study revealed marked increase of fracture risk. Although bone disorder is rare in cases of hyperparathyroidism nowadays, it still should be considered in patients with arthritis of unknown etiology like our case. Early diagnosis and treatment can reduce the morbidity.
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Affiliation(s)
- C H Chen
- Department of Internal Medicine, Chang Gung Memorial Hospital, Kaohsiung Hsien, Taiwan, ROC
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44
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Ozata M, Suzuki S, Takeda T, Malkin DG, Miyamoto T, Liu RT, Suzuki N, Silverberg JD, Daneman D, DeGroot LJ. Functional analysis of a proline to serine mutation in codon 453 of the thyroid hormone receptor beta 1 gene. J Clin Endocrinol Metab 1995; 80:3239-45. [PMID: 7593432 DOI: 10.1210/jcem.80.11.7593432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Mutations in the gene encoding human thyroid hormone receptor beta (hTR beta) have been associated with generalized resistance to thyroid hormone (GRTH). This disorder is associated with significant behavioral abnormalities. We examined the hTR beta gene in a family with members who manifest inappropriately normal TSH, elevated free T4, and free and total T3. Sequence analysis showed a cytosine to thymine transition at nucleotide 1642 in one allele of the index patient's genomic DNA. This altered proline to serine at codon 453. The resulting mutant receptor when expressed in vitro bound DNA with high affinity, but the T3 affinity of the receptor was impaired. The mutant TR demonstrated a dominant negative effect when cotransfected with two isoforms of wild-type receptor and also in the presence of TR variant alpha 2 in COS-1 cells. Mutations of codon 453 occur more frequently than at other sites, and four different amino acid substitutions have been reported. Significant differences in phenotype occur among affected individuals, varying from normality to moderately severe GRTH. There is no clear correlation between Ka or in vitro function of the mutant receptor, and phenotype. This study extends the association between GRTH and illness, and indicates that early diagnosis and counseling are needed in families with TR beta 1 abnormalities.
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Affiliation(s)
- M Ozata
- Department of Medicine, University of Chicago, Illinois 60637, USA
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Suzuki S, Takeda T, Liu RT, Hashizume K, DeGroot LJ. Importance of the most proximal GC box for activity of the promoter of human thyroid hormone receptor beta 1. Mol Endocrinol 1995; 9:1288-96. [PMID: 8544837 DOI: 10.1210/mend.9.10.8544837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 01/31/2023] Open
Abstract
We wish to localize the sequences required for transcriptional expression of the thyroid hormone receptor beta 1 (TR beta 1). Constitutive activity of the promoter of human thyroid hormone receptor beta 1 was assessed by transient transfection of deletion constructs attached to luciferase as reporter, into P19, GH3, HepG2, H19-7, and COS1 cells. A 40-base pair fragment of the beta 1 promoter including the TATA box induced minimal luciferase activity, which was considered basal activity. The activities of various lengths of the beta 1 promoter were estimated relative to the minimal promoter in five cell lines. The region between -130 and -40 was crucial for constitutive activity in all cell lines. Further deletion analysis in HepG2 cells showed that two regions mainly augmented the transcriptional activity of the minimal 40 base pair fragment. One region located at -115 to -93, which is highly GC-rich, included the most proximal of five putative GC boxes present in the whole 1325-base pair promoter. A second region contributing to expression of TR beta 1 in HepG2 cells is at -70 to -40. Mutation of the most proximal GC box strongly suppressed transactivity of the whole promoter in P19 and HepG2 cells. In contrast, mutations in the other GC boxes did not suppress transactivation in P19 cells and slightly suppress activation in HepG2 cells. In Schneider cells, which do not express Sp1, transactivity of the region distal to -40 is positively regulated by cotransfection with a vector expressing Sp1.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- S Suzuki
- Department of Medicine, University of Chicago, Illinois 60637, USA
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46
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Abstract
3,5,3,'-Triiodothyroacetic acid (Triac) has been used in therapy of resistance to thyroid hormone on an empirical basis and appears beneficial in some studies. We observed that the T3 analogs, Triac and 3,5,3'-triiodothyropropionic acid (Triprop), have a higher affinity for the thyroid hormone receptor-beta 1 (TR beta 1) than does T3 (2.7- and 1.8-fold, respectively), whereas the affinities of the three compounds for TR alpha 1 are the same. To evaluate whether T3 analogs would have a differential effect on TR beta 1 and TR beta 1 mutants and thus be a specific treatment for patients with resistance to thyroid hormone, we examined the induction of the transcriptional activation of wild-type (wt) TR alpha 1, TR beta 1, and mutant TR beta 1s by T3, Triac, and Triprop. The dose response of transcriptional activation by T3 analogs was measured by transient cotransfections with TRs and a rat malic enzyme-TRE fused to thymidine kinase (TK)-chloramphenicol acetyltransferase (CAT) in COS-1 cells. For TR alpha 1 wt, induction of CAT activity by T3 and Triac occurred at the same concentration. For TR beta 1 wt, Triac and Triprop showed a higher maximal activity than T3 (Tripro > Triac > T3) and reached 50% induction at a lower concentration than T3 (Tripro < Triac < T3). Induction of CAT activity in five mutant TR beta 1s (kindreds Mh, Mc, CL, Mf, and GH) was also analyzed. Even high levels of T3 analogs could not restore CAT activity to that of TR beta 1wt for any mutant. A dominant negative effect was produced by Mh, Mc, and Mf. Mutants CL and GH had a mild dominant negative effect depending on T3 analog concentrations and TREs. Cotransfection studies were performed using a rat malic enzyme-TK-CAT reporter plasmid to analyze the effects of hormones at near-physiological concentrations of T3 and Triac. Triac had a significantly higher transcriptional activation than T3 in Mc, CL, and GH, suggesting that Triac would have a beneficial effect to different degrees for different mutant TR beta 1s. Using mutants Mc and GH, further studies were carried out using rat GH and double palindromic and inverted palindromic TREs in COS-1 cells. On each TRE, 10 nmol/L Triac induced higher transcriptional activation in TR beta 1wt, mutant TR beta 1s, and TR beta 1wt plus mutant TR beta 1s (1:1 ratio) than the same dose of T3.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- T Takeda
- Department of Medicine, University of Chicago, Illinois 60637, USA
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47
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Liu RT, Suzuki S, Miyamoto T, Takeda T, Ozata M, DeGroot LJ. The dominant negative effect of thyroid hormone receptor splicing variant alpha 2 does not require binding to a thyroid response element. Mol Endocrinol 1995; 9:86-95. [PMID: 7760853 DOI: 10.1210/mend.9.1.7760853] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [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: 01/27/2023] Open
Abstract
The functionally inactive thyroid hormone receptor splicing variant-alpha 2 (TRv alpha 2) can inhibit transcriptional activation by TR alpha 1 or beta 1, demonstrating a dominant negative effect (DNE). We examine here the three commonly proposed mechanisms, namely, competition for binding to thyroid hormone response elements (TREs), formation of inactive heterodimers, and squelching. A mutation introduced into the DNA-binding domain (DBD) of the TRv alpha 2 was designed to prevent its binding to TREs. In transient cotransfection studies, the DBD mutant has nearly the same DNE as does TRv alpha 2 on three different TRE-containing reporter genes. The DNE of TRv alpha 2 is also not reversed by cotransfection with excess retinoid X receptor-alpha. Extracts of COS cells cotransfected with TR alpha 1 and either TRv alpha 2 or DBD mutant at different ratios were analyzed by gel shift assays. Neither TRv alpha 2 or the mutant altered binding of TR alpha 1 to four radiolabeled TREs. TRv alpha 2 itself can inhibit constitutive transactivation by a thymidine kinase promoter-driven reporter construct. Our results suggest that TRv alpha 2 can function in a dominant negative manner without binding to a TRE, at least for certain TREs. It is concluded that the DNE of TRv alpha 2 may occur through another unrecognized mechanism, perhaps by binding to basal transcription factors.
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Affiliation(s)
- R T Liu
- Department of Medicine, University of Chicago, Illinois 60637, USA
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Huang TP, Wang PW, Liu RT, Tung SC, Jean WY, Lu YC, Hung CL, Wu CC, Chen WJ. Ectopic ACTH syndrome with nocardiosis--a case report. Changgeng Yi Xue Za Zhi 1994; 17:371-377. [PMID: 7850654] [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: 05/22/2023]
Abstract
A 25-year-old man was admitted with chief complaints of multiple ecchymoses over face and both arms after a trivial trauma since one month before entry. Physically, he was thin without moon face, buffalo hump, or purple striae, while extensive fungus infection was present. Mild hyperglycemia, hypokalemic alkalosis were also found. Chest x-ray revealed multiple cavitary nodular lesions over bilateral lung fields. Needle biopsy from a rib lesion showed small cell carcinoma with strongly positive ACTH stain. The patient's basal cortisol level was greater than 62 micrograms/dl and failed to be suppressed by both low and high dose dexamethasone. The 24 hours urine free cortisol, 17 KS, and 17 OHCS were 8454 micrograms/24h, 49.8 mg/24h, and 50.8 mg/24h respectively. His plasma ACTH level was 725 pg/ml and remained high (1210 pg/ml) after high dose dexamethasone suppression. On the 10th day after admission, the patient's general condition got worse rapidly. Fever, dyspnea developed with progression of the lung lesions. Nocardia infection was proved. He expired three days later in spite of antibiotics and ketoconazole treatment.
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Affiliation(s)
- T P Huang
- Division of Endocrinology and Metabolism, Chang Gung Memorial Hospital, Kaohsiung, Taiwan, R.O.C
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Ozata M, Suzuki S, Miyamoto T, Liu RT, Fierro-Renoy F, DeGroot LJ. Serum thyroglobulin in the follow-up of patients with treated differentiated thyroid cancer. J Clin Endocrinol Metab 1994; 79:98-105. [PMID: 8027262 DOI: 10.1210/jcem.79.1.8027262] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
To determine the significance of serum thyroglobulin (Tg) level in terms of presence or absence of thyroid cancer, we evaluated available serum Tg data on and off T4 therapy in 180 patients with differentiated thyroid cancer who have now been followed up to 18 yr. The presence of cancer was established by radioiodine scans, x-rays, and clinical examination. Thirty-two patients with detectable serum Tg autoantibodies were excluded from this analysis. Tg was measured by RIA with a sensitivity of 1 ng/mL. Patients who had all stages of cancer, but who had no evidence of active disease after treatment, were grouped according to operative and 131I ablative therapy. In patients with a partial thyroidectomy with or without ablation, the presence of Tg did not indicate the presence of cancer since levels were often above either a 5 ng/mL or a 10 ng/mL cutoff. The presence of residual normal thyroid tissue decreases the diagnostic value of serum Tg assay. In patients who underwent near total (NTT) or total thyroidectomy (TT) and 131I ablation, 3 of 55 (5.5%) patients had Tg greater than 5 ng/mL and 1 of 55 (1.8%) patients had Tg greater than 10 ng/mL during therapy, whereas off therapy 13 of 57 (22.8%) patients had Tg greater than 5 ng/mL and 6 of 57 (10.5%) patients had Tg levels greater than 10 ng/mL. In this group of patients, a Tg level less than 10 ng/mL during suppressive therapy indicated the absence of apparent tumor in 54 of 55 (98.2%) of patients. Whereas sensitivity of the assay was increased by withdrawal of hormone, "false positives" increased especially at lower (3-6 ng/mL) cut-off levels. No cut-off value properly categorized all patients. These data suggest, that even in patients who underwent 131I ablation and total thyroidectomy and were thought to be cured, small foci of thyroid tissue which are undetectable by standard 2 mCi 131I scans may exist and produce some Tg. However, these residual cells do not appear to cause an adverse prognosis in most patients. In patients with recurrent or continued disease, during T4 treatment, Tg levels ranged between 2-21,000 ng/mL and 5 of 11 patients had a Tg less than 5 ng/mL. Off treatment, Tg levels ranged between 6-10,700 ng/mL and 3 of 13 patients had a Tg less than 10 ng/mL. In 4 patients Tg levels were less than 10 ng/mL on treatment but greater than 10 ng/mL off therapy.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- M Ozata
- Department of Medicine, University of Chicago, Illinois 60637
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Abstract
Tc-99m pertechnetate thyroid imaging was studied in 52 patients with Hashimoto's thyroiditis, with special reference to the thyroid functional state and Tc-99m trapping by the gland. The most common finding was diffusely increased trapping of radioactivity, a pattern similar to Graves' disease. On the other hand, the increased trapping in Hashimoto's thyroiditis was usually associated with hypothyroidism. The degree of Tc-99m trapping did not correlate with the degree of the endogenous TSH elevation. However, increased Tc-99m trapping could predict the reversibility of hypothyroidism in just 3 months.
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Affiliation(s)
- P W Wang
- Department of Nuclear Medicine, Chang Gung Memorial Hospital, Chang Gung Medical College, Kaohsiung, Taiwan, R.O.C
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