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Yin HL, Pu N, Chen QD, Zhang JC, Xu YL, Shi CY, Lyu MZ, Lou WH, Wu WC. [The beginnings and evolution of a pancreatic surgeon: a technical morphological analysis in first 5 years]. Zhonghua Wai Ke Za Zhi 2023; 61:511-518. [PMID: 37088485 DOI: 10.3760/cma.j.cn112139-20221027-00462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Objective: To explore the development of the pancreatic surgeon technique in a high-volume center. Methods: A total of 284 cases receiving pancreatic surgery by a single surgeon from June 2015 to December 2020 were retrospectively included in this study. The clinical characteristics and perioperative medical history were extracted from the medical record system of Zhongshan Hospital,Fudan University. Among these patients,there were 140 males and 144 females with an age (M (IQR)) of 61.0 (16.8) years(range: 15 to 85 years). The "back-to-back" pancreatic-jejunal anastomosis procedure was used to anastomose the end of the pancreas stump and the jejunal wall. Thirty days after discharge,the patients were followed by outpatient follow-up or telephone interviews. The difference between categorical variables was analyzed by the Chi-square test or the CMH chi-square test. The statistical differences for the quantitative data were analyzed using one-way analysis of variance or Kruskal-Wallis H test and further analyzed using the LSD test or the Nemenyi test,respectively. Results: Intraoperative blood loss in pancreaticoduodenectomy between 2015 and 2020 were 300,100(100),100(100),100(0),100(200) and 150 (200) ml,respectively. Intraoperative blood loss in distal pancreatectomy was 250 (375),100 (50),50 (65),50 (80),50 (50),and 50 (100) ml,respectively. Intraoperative blood loss did not show statistical differences in the same operative procedure between each year. The operative time for pancreaticoduodenectomy was respectively 4.5,5.0(2.0),5.5(0.8),5.0(1.3),5.0(3.3) and 5.0(1.0) hours in each year from 2015 to 2020,no statistical differences were found between each group. The operating time of the distal pancreatectomy was 3.8 (0.9),3.0 (1.5),3.0 (1.8),2.0 (1.1),2.0 (1.5) and 3.0(2.0) hours in each year,the operating time was obviously shorter in 2018 compared to 2015 (P=0.026) and 2020 (P=0.041). The median hospital stay in 2020 for distal pancreatectomy was 3 days shorter than that in 2019. The overall incidence of postoperative pancreatic fistula gradually decreased,with a incident rate of 50.0%,36.8%,31.0%,25.9%,21.1% and 14.8% in each year. During this period,in a total of 3,6,4,2,0 and 20 cases received laparoscopic operations in each year. The incidence of clinically relevant pancreatic fistula (grade B and C) gradually decreased,the incident rates were 0,4.8%,7.1%,3.4%,4.3% and 1.4%,respectively. Two cases had postoperative abdominal bleeding and received unscheduled reoperation. The overall rate of unscheduled reoperation was 0.7%. A patient died within 30 days after the operation and the overall perioperative mortality was 0.4%. Conclusion: The surgical training of a high-volume center can ensure a high starting point in the initial stage and steady progress of pancreatic surgeons,to ensure the safety of pancreatic surgery.
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Affiliation(s)
- H L Yin
- Department of Pancreatic Surgery,Zhongshan Hospital,Fudan University,Shanghai 200032,China
| | - N Pu
- Department of Pancreatic Surgery,Zhongshan Hospital,Fudan University,Shanghai 200032,China
| | - Q D Chen
- Department of Pancreatic Surgery,Zhongshan Hospital,Fudan University,Shanghai 200032,China
| | - J C Zhang
- Department of Pancreatic Surgery,Zhongshan Hospital,Fudan University,Shanghai 200032,China
| | - Y L Xu
- Department of Pancreatic Surgery,Zhongshan Hospital,Fudan University,Shanghai 200032,China
| | - C Y Shi
- Department of Pancreatic Surgery,Zhongshan Hospital,Fudan University,Shanghai 200032,China
| | - M Z Lyu
- Department of Biostatistics,Zhongshan Hospital,Fudan University,Shanghai 200032,China
| | - W H Lou
- Department of Pancreatic Surgery,Zhongshan Hospital,Fudan University,Shanghai 200032,China
| | - W C Wu
- Department of Pancreatic Surgery,Zhongshan Hospital,Fudan University,Shanghai 200032,China
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Gao Q, Lin YP, Li BS, Wang GQ, Dong LQ, Shen BY, Lou WH, Wu WC, Ge D, Zhu QL, Xu Y, Xu JM, Chang WJ, Lan P, Zhou PH, He MJ, Qiao GB, Chuai SK, Zang RY, Shi TY, Tan LJ, Yin J, Zeng Q, Su XF, Wang ZD, Zhao XQ, Nian WQ, Zhang S, Zhou J, Cai SL, Zhang ZH, Fan J. Unintrusive multi-cancer detection by circulating cell-free DNA methylation sequencing (THUNDER): development and independent validation studies. Ann Oncol 2023; 34:486-495. [PMID: 36849097 DOI: 10.1016/j.annonc.2023.02.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [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: 05/30/2022] [Revised: 02/10/2023] [Accepted: 02/20/2023] [Indexed: 02/27/2023] Open
Abstract
BACKGROUND Early detection of cancer offers the opportunity to identify candidates when curative treatments are achievable. The THUNDER study (THe UNintrusive Detection of EaRly-stage cancers, NCT04820868) aimed to evaluate the performance of ELSA-seq, a previously described cfDNA methylation-based technology, in the early detection and localization of six types of cancers in the colorectum, esophagus, liver, lung, ovary and pancreas. PATIENTS AND METHODS A customized panel of 161,984 CpG sites was constructed and validated by public and in-house (cancer: n=249; non-cancer: n=288) methylome data, respectively. The cfDNA samples from 1,693 participants (cancer: n=735; non-cancer: n=958) were retrospectively collected to train and validate two multi-cancer detection blood test models (MCDBT-1/2) for different clinical scenarios. The models were validated on a prospective and independent cohort of age-matched 1,010 participants (cancer: n=505; non-cancer: n=505). Simulation using the cancer incidence in China was applied to infer stage-shift and survival benefits to demonstrate the potential utility of the models in the real world. RESULTS MCDBT-1 yielded a sensitivity of 69.1% (64.8%‒73.3%), a specificity of 98.9% (97.6%‒99.7%) and tissue origin accuracy of 83.2% (78.7%‒87.1%) in the independent validation set. For early stage (I‒III) patients, the sensitivity of MCDBT-1 was 59.8% (54.4%‒65.0%). In the real-world simulation, MCDBT-1 achieved the sensitivity of 70.6% in detecting the six cancers, thus decreasing late-stage incidence by 38.7%‒46.4%, and increasing 5-year survival rate by 33.1%‒40.4%, respectively. In parallel, MCDBT-2 was generated at a slightly low specificity of 95.1% (92.8%-96.9%) but a higher sensitivity of 75.1% (71.9%-79.8%) than MCDBT-1 for populations at relatively high risk of cancers, and also had ideal performance. CONCLUSION In this large-scale clinical validation study, MCDBT-1/2 models showed a high sensitivity, specificity, and accuracy of predicted origin in detecting six types of cancers.
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Affiliation(s)
- Q Gao
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai 200032, China; Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Y P Lin
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai 200032, China; Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - B S Li
- Burning Rock Biotech, Guangzhou 510300, China
| | - G Q Wang
- Burning Rock Biotech, Guangzhou 510300, China
| | - L Q Dong
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai 200032, China; Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - B Y Shen
- Department of General Surgery, Pancreatic Disease Center, Research Institute of Pancreatic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 20025, China
| | - W H Lou
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - W C Wu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - D Ge
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Q L Zhu
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Y Xu
- Burning Rock Biotech, Guangzhou 510300, China
| | - J M Xu
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - W J Chang
- Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - P Lan
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510655, China
| | - P H Zhou
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - M J He
- Endoscopy Center and Endoscopy Research Institute, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - G B Qiao
- Department of Thoracic Surgery, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou 510080, China
| | - S K Chuai
- Burning Rock Biotech, Guangzhou 510300, China
| | - R Y Zang
- Ovarian Cancer Program, Department of Gynaecologic Oncology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - T Y Shi
- Ovarian Cancer Program, Department of Gynaecologic Oncology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - L J Tan
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - J Yin
- Department of Thoracic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Q Zeng
- Health Management Institute, The Second Medical Center & National Clinical Research Center for Geriatric Diseases, Chinese PLA General Hospital, Beijing 100853, China
| | - X F Su
- Department of Cardiothoracic Surgery, Linfen People's Hospital, Shanxi 041000, China
| | - Z D Wang
- Clinical Research Center, Linfen People's Hospital, Shanxi 041000, China
| | - X Q Zhao
- Department of Pathology, Linfen People's Hospital, Shanxi 041000, China
| | - W Q Nian
- Phase I ward, Chongqing University Cancer Hospital, Chongqing 400030, China
| | - S Zhang
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai 200032, China
| | - J Zhou
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai 200032, China; Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - S L Cai
- Burning Rock Biotech, Guangzhou 510300, China
| | - Z H Zhang
- Burning Rock Biotech, Guangzhou 510300, China
| | - J Fan
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Fudan University, Shanghai 200032, China; Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.
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Wang H, Zhang B, Wu WC, Zhu ZH, Wang H. Change of Left Ventricular Geometric Pattern in Patients with Preserved Ejection Fraction Undergoing Coronary Artery Bypass Grafting. J Cardiovasc Transl Res 2022; 15:1444-1454. [PMID: 35543834 DOI: 10.1007/s12265-022-10249-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/31/2022] [Indexed: 12/16/2022]
Abstract
Left ventricular (LV) remodeling and geometric patterns are associated with variations in prognosis. Two hundred twenty-eight patients who underwent selective isolated coronary artery bypass grafting (CABG) were included, divided into normal geometry, concentric remodeling, concentric hypertrophy, and eccentric hypertrophy at baseline. More than half participants with normal geometry at baseline remained in that category, and similar ratio of concentric remodeling reverted to normal geometry on follow-up. The concentric hypertrophy at baseline tended to progress to eccentric geometry rather than normal geometry, while changes from eccentric to concentric hypertrophy was uncommon. iLVEDD had a significant association with an increased risk of developing an abnormal geometric pattern from a normal or concentric remodeling pattern, and iLVESD and LAScd involved in the regression from an abnormal geometric pattern. Thus, dynamic changes in LV geometric pattern are common on 1-year follow-up after CABG and LA strain has an incremental role for early detection in this process.
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Affiliation(s)
- Han Wang
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167 Beilishi Road, XiCheng District, Beijing, 100037, People's Republic of China
| | - Bing Zhang
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167 Beilishi Road, XiCheng District, Beijing, 100037, People's Republic of China
| | - Wei-Chun Wu
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167 Beilishi Road, XiCheng District, Beijing, 100037, People's Republic of China
| | - Zhen-Hui Zhu
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167 Beilishi Road, XiCheng District, Beijing, 100037, People's Republic of China
| | - Hao Wang
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No.167 Beilishi Road, XiCheng District, Beijing, 100037, People's Republic of China.
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Wong CM, Chan SF, Liu R, Zhang J, Wu WC, Liang Z, Yau HM, Wang DY, Li S, Lam KH, Qiu WB, Luo HS, Dai JY. 20-MHz phased array ultrasound transducer for in vivo ultrasound imaging of small animals. Ultrasonics 2022; 126:106821. [PMID: 35988512 DOI: 10.1016/j.ultras.2022.106821] [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] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 07/16/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
In vivo ultrasound imaging with phased array transducers is of great importance for both clinical application and biomedical research. In this work, relaxor ferroelectric PMN-0.28PT single crystal with very high piezoelectric constant d33 ≥ 2000 pC/N and electromechanical coupling coefficient k33 ∼ 0.92 is used to fabricate high-frequency phased array transducers. A 128-element 20-MHz phased array transducer is successfully fabricated, and the optimized performance of -6 dB average bandwidth of ∼ 84 % and insertion loss of -43 dB are achieved. The axial and lateral imaging resolutions of the transducer are determined to be 81 µm and 243 µm, respectively. With Verasonics image platform, in vivo fisheye images are acquired, demonstrating the potential application of our developed high-frequency phased array transducer for biomedical research on small animals.
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Affiliation(s)
- C M Wong
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China; Hospital Authority, Hong Kong, China
| | - S F Chan
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China
| | - R Liu
- Shenzhen Key Laboratory of Ultrasound Imaging and Therapy, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - J Zhang
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
| | - W C Wu
- Shenzhen Key Laboratory of Ultrasound Imaging and Therapy, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; School of Materials Science and Engineering, The University of New South Wales (UNSW Sydney), Australia
| | - Z Liang
- Shanghai Institute of Ceramics, The Chinese Academy of Sciences, Shanghai, China
| | - H M Yau
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China; Hospital Authority, Hong Kong, China
| | - D Y Wang
- School of Materials Science and Engineering, The University of New South Wales (UNSW Sydney), Australia
| | - S Li
- School of Materials Science and Engineering, The University of New South Wales (UNSW Sydney), Australia
| | - K H Lam
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
| | - W B Qiu
- Shenzhen Key Laboratory of Ultrasound Imaging and Therapy, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
| | - H S Luo
- Shanghai Institute of Ceramics, The Chinese Academy of Sciences, Shanghai, China
| | - J Y Dai
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, China.
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Li JA, Xu YL, Ding N, Ji Y, Liu LX, Rao SX, Zhang YQ, Yao XZ, Fan Y, Huang C, Zhou YH, Wu LL, Dong Y, Zhang L, Rong YF, Kuang TT, Xu XF, Liu L, Wang DS, Jin DY, Lou WH, Wu WC. [Pancreas multidisciplinary team optimizes the diagnosis and treatment of pancreas-related diseases and improves the prognosis of pancreatic cancer patients]. Zhonghua Wai Ke Za Zhi 2022; 60:666-673. [PMID: 35775259 DOI: 10.3760/cma.j.cn112139-20220408-00149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objectives: To evaluate the role of pancreas multidisciplinary team(MDT) clinic in the diagnosis of pancreatic diseases,patient compliance with MDT advice,and the impact of MDT on the postoperative survival of patients with pancreatic cancer. Methods: The study included 927 patients(554 males,373 females,aged (58.1±13.3)years (range: 15 to 89 years)) that had visited the pancreas MDT clinic of Zhongshan Hospital from May 2015 to December 2021,and 677 patients(396 males, 281 females, aged (63.6±8.9)years(range: 32 to 95 years)) who underwent radical surgery and with pathologically confirmed pancreatic adenocarcinoma from January 2012 to December 2020,of whom 79 patients had attended the pancreas MDT. The clinical and pathological data were collected and analyzed retrospectively. Diseases were classified in accordance with 2010 WHO classification of tumors of the digestive system and usual clinical practices. The Kaplan-Meier method was used for drawing the survival curve and calculating the survival rate. The univariate analysis was done by Log-rank test and the multivariate analysis was done by COX proportional hazards model. Survival rates were compared using χ2 test. Results: Among the 927 patients that had visited the MDT clinic,233 patients(25.1%) were referred due to undetermined diagnosis. A direct diagnosis was made in 109 cases (46.8%,109/233) by the MDT clinic, of which 98 were consistent with the final diagnosis,resulting in an accuracy of 89.9%(98/109). The direct diagnosis rate in the recent years(36.6%(41/112),from June 2019 to December 2021) decreased compared to that in the previous years(56.2%(68/121),from May 2015 to May 2019),yet the accuracy in the recent years(90.2%,37/41) was basically the same as before (89.7%,61/68). The rate of compliance of the entire cohort was 71.5%(663/927), with the compliance rate in the recent two and a half years(81.4%,338/415) remarkably higher than that in the previous four years(63.4%,325/512). Patients with pancreatic cancer that attended the MDT exhibited a trend toward longer median postoperative survival than patients that did not attend the MDT,but the difference was not statistically significant(35.2 months vs.30.2 months,P>0.05). The 1-year and 3-year survival rates of patients that attended the MDT were significanly higher than patients that did not attend the MDT(88.6% vs. 78.4%,P<0.05;32.9% vs. 21.9%,P<0.05,respectively),but the 5-year survival rate was not statistically different(7.6% vs. 4.8%,P>0.05). Conclusions: The pancreas MDT clinic is an accurate and convenient way to diagnose intractable pancreatic diseases,and in the recent years the patients' compliance rate with MDT advice has increased. Pancreatic cancer patients that have attended the MDT have higher 1-year and 3-year postoperative survival rates,but the long-term survival benefits of MDT still needs to be proved by clinical studies on a larger scale.
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Affiliation(s)
- J A Li
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - Y L Xu
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - N Ding
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - Y Ji
- Department of Pathology,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - L X Liu
- Department of Interventional Radiology,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - S X Rao
- Department of Radiology,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - Y Q Zhang
- Endoscopy Center,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - X Z Yao
- Department of Radiology,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - Y Fan
- Department of Traditional Chinese Medicine,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - C Huang
- Department of Liver Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - Y H Zhou
- Department of Medical Oncology,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - L L Wu
- Department of Radiotherapy,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - Y Dong
- Department of Ultrasound,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - L Zhang
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - Y F Rong
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - T T Kuang
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - X F Xu
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - L Liu
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - D S Wang
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - D Y Jin
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - W H Lou
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
| | - W C Wu
- Department of Pancreatic Surgery,Zhongshan Hospital Fudan University,Shanghai 200032,China
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Wang H, Zhang B, Wu WC, Zhu ZH, Wang H. Changes and predictors of secondary mild mitral regurgitation after coronary artery bypass grafting. Rev Cardiovasc Med 2022; 23:78. [DOI: 10.31083/j.rcm2302078] [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] [Received: 11/04/2021] [Revised: 11/28/2021] [Accepted: 12/20/2021] [Indexed: 11/06/2022] Open
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Wu WC, Wang JS. [Advances on the management of renal lesion in glycogen storage disease type I]. Zhonghua Gan Zang Bing Za Zhi 2021; 29:75-78. [PMID: 33541027 DOI: 10.3760/cma.j.cn501113-20201230-00687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Glycogen storage disease (GSD) is a group of congenital defects involved in the synthesis and decomposition of glycogen. As the most common type, GSD I is caused by mutations in glucose-6-phophate catalytic subunit (type Ia), or glucose-6-phosphate transporter (type Ib). Both defects can lead to hypoglycemia and accumulation of glycogen in the liver and kidney. So renal lesion is one of the main complications, which may manifest as increased glomerular filtration rate in the early stage, followed by microalbuminuria and decreased glomerular filtration rate and proteinuria. Subsequently it may progress into renal interstitial fibrosis, glomerulosclerosis, and eventually renal failure. Early detection and timely intervention of renal impairment are very important. Here we mainly describe the progress of diagnosis and treatment on the kidney disease of glycogen storage disease type I.
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Affiliation(s)
- W C Wu
- Department of Infectious Disease, Children's Hospital of Fudan University, Shanghai 201102, China
| | - J S Wang
- Department of Infectious Disease, Children's Hospital of Fudan University, Shanghai 201102, China
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Wu WC, Tsai WL, Lee MJ. Virtual and reality: risk and protective factors of cyber and offline relational victimization. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Cyber victimization (CV) and offline relational victimization (ORV) both impede adolescent development and might pose self-harm or suicide. The aim of this work is to examine the risk and protective factors of the two experiences across gender.
Methods
A total of 1,712 junior and senior high school students who came from 34 schools randomly sampled from northern Taiwan. The study included multi-facet supports (i.e. maternal, paternal, grandparent, peer, and teacher supports), positive and negative peer connections, smartphone addiction and family characteristics (i.e. parental marital status and self-perceived financial status) as predictors.
Results
10.3% of the participants reported CV more than once (56.8% girls) and 35.2% of them reported ORV more than once (52.4% girls) in the last three months. Results of logistic regression models showed that smartphone addiction positively related to CV (boys: OR = 1.3, 95% CI = 1.1-1.6; girls: OR = 1.6, 95% CI = 1.3-2.0) and ORV (boys: OR = 1.2, 95% CI = 1.1-1.4; girls: OR = 1.2, 95% CI = 1.1-1.3) regardless gender. Negative peer connection related to ORV only among boys (OR = 1.4, 95% CI = 1.7-1.7). Low-level self-perceived financial status related to having CV (OR = 2.8, 95% CI = 1.4-5.5) and ORV (OR = 2.0, 95% CI = 1.2-3.4) only among girls. Interestingly, paternal support is the only significant protective factor among three family supports. Paternal support negatively associated with CV (OR = 0.8, 95% CI = 0.6-0.9) and ORV of boys (OR = 0.8, 95% CI = 0.7-0.9) as well as ORV of girls (OR = 0.8, 95% CI = 0.6-0.9). Furthermore, teacher support negatively associated with girls' CV (OR = 0.8, 95% CI = 0.6-0.9) and boys' ORV (OR = 0.8, 95% CI = 0.7-0.9).
Conclusions
The study identified a few gender-specific risk factors. For both gender, to prevent CV and ORV, supporting adolescents to avoid smartphone addiction is critical. Enhancing paternal support and teacher support can be effective in preventing adolescents' cyber and offline relational victimization.
Key messages
Paternal and teacher supports, rather than other sources of supports, are protective factors of cyber victimization and offline relational victimization among adolescents. Smartphone addiction, regardless of gender, not only positively associated with cyber victimization but also positively related to offline relational victimization.
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Affiliation(s)
- W C Wu
- Department of Health Promotion and Health Education, National Taiwan Normal University, Taipei, Taiwan
| | - W L Tsai
- Department of Health Promotion and Health Education, National Taiwan Normal University, Taipei, Taiwan
| | - M J Lee
- Graduate Institute of Social Work, National Taiwan Normal University, Taipei, Taiwan
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Yang YJ, Qian HY, Song L, Geng YJ, Gao RL, Li N, Wang H, Tian XQ, Huang J, Huang PS, Xu J, Shen R, Lu MJ, Zhao SH, Wu WC, Wu Y, Zhang J, Qian J, Xu JY, Xiong YY. Strengthening effects of bone marrow mononuclear cells with intensive atorvastatin in acute myocardial infarction. Open Heart 2020; 7:e001139. [PMID: 32393654 PMCID: PMC7223465 DOI: 10.1136/openhrt-2019-001139] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 02/20/2020] [Accepted: 03/26/2020] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE To test whether intensive atorvastatin (ATV) increases the efficacy of transplantation with autologous bone marrow mononuclear cells (MNCs) in patients suffering from anterior ST-elevated myocardial infarction (STEMI). METHODS This clinical trial was under a 2×2 factorial design, enrolling 100 STEMI patients, randomly into four groups of regular (RA) or intensive ATV (IA) with MNCs or placebo. The primary endpoint was the change of left ventricular ejection fraction (LVEF) at 1-year follow-up from baseline, primarily assessed by MRI. The secondary endpoints included other parameters of cardiac function, remodelling and regeneration determined by MRI, echocardiography, positron emission tomography (PET) and biomarkers. RESULTS All the STEMI patients with transplantation of MNCs showed significantly increased LVEF change values than those with placebo (p=0.01) with only in the IA+MNCs patients group demonstrating significantly elevation of LVEF than in the IA+placebo group (+12.6% (95%CI 10.4 to 19.3) vs +5.0% (95%CI 4.0 to 10.0), p=0.001), pointing to a better synergy between ATV and MNCs (p=0.019). PET analysis revealed significantly increased viable areas of myocardium (p=0.015), while the scar sizes (p=0.026) and blood aminoterminal pro-B-type natriuretic peptide (p<0.034) reduced. All these above benefits of MNCs were also attributed to IA+MNCs instead of RA+MNCs group of patients with STEMI. CONCLUSIONS Intensive ATV treatment augments the therapeutic efficacy of MNCs in patients with anterior STEMI at the convalescent stage. The treatment with the protocol of intensive ATV and MNC combination offers a clinically essential approach for myocardial infarction. TRIAL REGISTRATION NUMBER NCT00979758.
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Affiliation(s)
- Yue-Jin Yang
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hai-Yan Qian
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lei Song
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yong-Jian Geng
- The Center for Cardiovascular Biology and Atherosclerosis, Department of Internal Medicine, University of Texas McGovern School of Medicine at Houston, Houston, Texas, USA
| | - Run-Lin Gao
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Na Li
- Department of Cardiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Hong Wang
- Center for Cardiac Critical Care, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, China
| | - Xia-Qiu Tian
- Center for Cardiac Critical Care, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, China
| | - Ji Huang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, China
| | - Pei-Sen Huang
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jun Xu
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Rui Shen
- Department of Nuclear Medicine, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Min-Jie Lu
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shi-Hua Zhao
- Department of Magnetic Resonance Imaging, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei-Chun Wu
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yuan Wu
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jun Zhang
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie Qian
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jun-Yan Xu
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yu-Yan Xiong
- Department of Cardiology, Center for Coronary Heart Disease, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Liu BY, Wu WC, Zeng QX, Liu ZH, Niu LL, Tian Y, Cheng XL, Luo Q, Zhao ZH, Huang L, Wang H, He JG, Xiong CM. Two-dimensional speckle tracking echocardiography detected interventricular dyssynchrony predicts exercise capacity and disease severity in pre-capillary pulmonary hypertension. Ann Transl Med 2020; 8:456. [PMID: 32395500 PMCID: PMC7210168 DOI: 10.21037/atm.2020.03.146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Background Right ventricular (RV) intraventricular mechanical dyssynchrony detected by two-dimensional speckle tracking echocardiography (2D-STE) has been reported to be correlated with a decrease in RV contractile efficiency in pulmonary hypertension (PH) patients, while little attention has been paid to biventricular dysfunction. Therefore, we aimed to evaluate the predictive value of 2D-STE detected interventricular dyssynchrony for exercise capacity and disease severity in patients with pre-capillary PH (PcPH). Methods Conventional transthoracic echocardiography, 2D-STE and cardiopulmonary exercise tests (CPETs) were performed in all participants. Intra- and interventricular dyssynchrony were calculated as the standard deviation (SD) of the time intervals corrected for heart rate between QRS onset and peak longitudinal strain. Multivariate linear regression analyses were performed to identify independent predictors of peak oxygen consumption (PVO2) during the CPET. Multivariable logistical regression modeling was used to analyze the associations between interventricular dyssynchrony and risk assessment. Results Sixty-six PcPH patients were consecutively recruited (19 male and 47 female, average 35 years old). WHO functional class, N-terminal pro-brain natriuretic peptide (BNP) and body mass index were included as independent predictors in the first multivariate regression analysis of clinical data without echocardiographic parameters (Model-1, r2=0.423, P<0.001). We subsequently added conventional echocardiographic parameters and 2D-STE parameters to the clinical data, RV fractional area change (Model-2, r2=0.417, P<0.001), RV global longitudinal strain (Model-3, r2=0.454, P=0.001), RV intraventricular dyssynchrony (Model-4: r2=0.474, P<0.001) and interventricular dyssynchrony (Model-5, r2=0.483, P<0.001) were identified as independent predictors of PVO2. Interventricular dyssynchrony, calculated as the SD of the time intervals of nine segments, was independently associated with risk assessment (odd ratio 1.027, 95% CI: 1.003–1.052, P=0.03). The area under the receiver-operating characteristic curve (AUC) was 0.73 (P<0.001). Conclusions Interventricular dyssynchrony detected by 2D-STE contributed to a better evaluation of exercise capacity and disease severity in PcPH patients.
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Affiliation(s)
- Bing-Yang Liu
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Wei-Chun Wu
- Department of Echocardiography, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Qi-Xian Zeng
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Zhi-Hong Liu
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Li-Li Niu
- Department of Echocardiography, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Yue Tian
- Department of Echocardiography, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Xiao-Ling Cheng
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Qin Luo
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Zhi-Hui Zhao
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Li Huang
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Hao Wang
- Department of Echocardiography, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Jian-Guo He
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Chang-Ming Xiong
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
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11
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Li WL, Xu YD, Han X, Wu WC, Lou WH. [Clinical analysis and prognosis factors of malignancy in the patients with mucinous cystic neoplasms of the pancreas]. Zhonghua Wai Ke Za Zhi 2020; 58:225-229. [PMID: 32187927 DOI: 10.3760/cma.j.issn.0529-5815.2020.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To examine clinic pathological features of mucinous cystic neoplasms (MCN) of the pancreas and explore the prognosis factors associated with malignant transformation of MCN of the pancreas. Methods: This multicenter retrospective study included all patients with pancreatic MCN underwent surgery at Department of Pancreatic Surgery, Zhongshan Hospital of Fudan University between January 2008 and December 2018 and patients with MCN who confirmed by postoperative pathology from Multicenter Pancreatic Cystic Tumor Database. There were 50 males (14.4%) and 297 females (85.6%) and the mean age was 48.6 years (range: 24-77 years). According to the pathological results, all patients were divided into benign lesion group (including MCN and which associated with low/medium grade dysplasia) and malignant lesion group (including MCN with high-grade dysplasia or invasive carcinoma) . The preoperative clinical pathology and imaging features of the two groups were analyzed, and the risk factors associated with malignant transformation of MCN were statistically analyzed. Results: This multicenter retrospective study included 347 patients. Twenty-four of the 347 patients were malignant, including 7 males and 17 females. Univariate analysis showed that age, gender, carcino-embryonic antigen (CEA) , CA19-9, CA125, tumor maximum diameter, and tumor location were remarkably different in the two groups (P<0.05) . Logistic regression analysis found that the preoperative tumor maximum diameter (OR=1.023, 95% CI: 1.002-1.045, P=0.035) was an independent risk factor for MCN malignant transformation. Conclusions: Age, gender, CEA, CA19-9, CA125, tumor maximum diameter, and tumor location are important features of MCN malignant lesions.The maximum diameter of the preoperative tumor is an independent risk factor for MCN malignant transformation.
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Affiliation(s)
- W L Li
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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12
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Liu BY, Wu WC, Zeng QX, Liu ZH, Niu LL, Tian Y, Luo Q, Zhao ZH, Quan RL, Lin JR, Wang H, He JG, Xiong CM. Comparison of the capability of risk stratification evaluation between two- and three-dimensional speckle-tracking strain in pre-capillary pulmonary hypertension. Pulm Circ 2019; 9:2045894019894525. [PMID: 31908764 PMCID: PMC6935885 DOI: 10.1177/2045894019894525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 11/22/2019] [Indexed: 01/04/2023] Open
Abstract
To investigate and compare the value of right ventricular longitudinal strain detected by two-dimensional and three-dimensional speckle-tracking echocardiography in risk stratification evaluation in pre-capillary pulmonary hypertension. We consecutively screened 66 patients diagnosed with pre-capillary pulmonary hypertension in our center. According to the risk assessment recommended by 2015 European Society of Cardiology Guidelines, all participants were classified into low- and intermediate-high-risk group. Two-dimensional and three-dimensional strains were measured using off-line softwares (GE EchoPAC version 201 and TomTec, 4D RV Function 2.0). Fifty-seven pre-capillary pulmonary hypertension patients (average 35 years old, 18 males and 39 females) were finally enrolled in our study, 32 (56.1%) were classified in low-risk group, while 25 (43.9%) were in the intermediate-high-risk group. Clinical data associated with disease severity, such as N-terminal pro-brain natriuretic peptide (r = 0.574, P < 0.001), peak oxygen consumption (r = -0.484, P < 0.001), and 6-min walking distance (r = -0.356, P = 0.008) were significantly correlated with two-dimensional right ventricular longitudinal strain; while the correlations with three-dimensional right ventricular longitudinal strain were weaker. Receiver operating characteristic curves for the detection of intermediate-high risk stratification showed two-dimensional right ventricular longitudinal strain had the best predictive capacity (area under curve, 0.82, 95% CI: 0.71-0.93, P < 0.001). Univariate and Multivariate Logistic regression analyses identified two-dimensional right ventricular longitudinal strain as an independent predictor (OR: 1.42, 95% CI: 1.18-1.71, P < 0.001) of intermediate-high risk stratification in this cohort of pre-capillary pulmonary hypertension patients, the predictive capacity retained (OR: 1.45, 95% CI: 1.18-1.78, P < 0.001) after adjusted by age, gender, and body mass index, while three-dimensional speckle-tracking echocardiography parameters were not. In conclusion, when used for the detection of intermediate-high risk stratification in pre-capillary pulmonary hypertension, two-dimensional right ventricular longitudinal strain was better than three-dimensional right ventricular longitudinal strain.
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Affiliation(s)
- Bing-Yang Liu
- Department of Cardiology, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Wei-Chun Wu
- Department of Echocardiography, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Qi-Xian Zeng
- Department of Cardiology, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Zhi-Hong Liu
- Department of Cardiology, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Li-Li Niu
- Department of Echocardiography, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Yue Tian
- Department of Echocardiography, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Qin Luo
- Department of Cardiology, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Zhi-Hui Zhao
- Department of Cardiology, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Rui-Lin Quan
- Department of Cardiology, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Jing-Ru Lin
- Department of Echocardiography, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Hao Wang
- Department of Echocardiography, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Jian-Guo He
- Department of Cardiology, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
| | - Chang-Ming Xiong
- Department of Cardiology, Chinese Academy of Medical Sciences and Peking Union Medical College, Fuwai Hospital, Beijing, People's Republic of China
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Liu BY, Wu WC, Zeng QX, Liu ZH, Niu LL, Tian Y, Luo Q, Zhao ZH, Quan RL, Lin JR, Wang H, He JG, Xiong CM. The value of three-dimensional echocardiography in risk stratification in pulmonary arterial hypertension: a cross-sectional study. Int J Cardiovasc Imaging 2019; 36:577-584. [PMID: 31853819 DOI: 10.1007/s10554-019-01743-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 11/27/2019] [Indexed: 11/29/2022]
Abstract
To explore the value of right ventricular (RV) parameters detected by three-dimensional echocardiography (3DE) in risk stratification in pulmonary arterial hypertension (PAH) patients. We prospectively recruited 130 pulmonary hypertension patients from National Center for Cardiovascular Diseases, Fuwai Hospital. Each participant was performed a transthoracic echocardiography and 3DE parameters were measured using an off-line software (4D RV Function 2.0, TomTec). Patients were classified into low, intermediate-high risk group based on 2015 ESC Guidelines. A total of 91 PAH patients (34 ± 12 years old, 25 males) were enrolled, among which, 42 were classified into low risk group, while 49 were intermediate-high risk group. Compared with low-risk patients, those with intermediate-high risk had significantly larger 3DE-RV volumes, worse ejection fraction (EF) and tricuspid annular plane systolic excursion, and decreased longitudinal strain (LS). Receive operating characteristic curves illustrated all the 3DE parameters were able to predict intermediate-high risk stratification, especially 3D-RVEF (area under curve, 0.82, 95% CI 0.73-0.91, P < 0.001). And 3D-RVEF < 26.39% had a 81.6% sensibility and 73.8% specificity to predict intermediate-high risk stratification. Univariate and multivariate Logistic regression analyses identified 3D-RV end-diastolic (OR 1.02, 95% CI 1.01-1.03, P = 0.002) and end-systolic (OR 1.03, 95% CI 1.01-1.04, P < 0.001) volumes, 3D-RVEF (OR 0.82, 95% CI 0.75-0.90, P < 0.001) and LS of free wall (OR 1.17, 95% CI 1.05-1.31, P = 0.005) as independent predictors of intermediate-high risk stratification. In conclusion, RV volumes, EF and free wall strain detected by 3DE were independent predictors of intermediate-high risk stratification in PAH patients, among which, RVEF showed the best predictive capacity.
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Affiliation(s)
- Bing-Yang Liu
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Wei-Chun Wu
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Qi-Xian Zeng
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Zhi-Hong Liu
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Li-Li Niu
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Yue Tian
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Qin Luo
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Zhi-Hui Zhao
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Rui-Lin Quan
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Jing-Ru Lin
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Hao Wang
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Jian-Guo He
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Chang-Ming Xiong
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China.
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Xu JY, Qian HY, Huang PS, Xu J, Xiong YY, Jiang WY, Xu Y, Leng WX, Li XD, Chen GH, Tang RJ, Huang CR, Hu MJ, Jin C, Wu Y, Zhang J, Qian J, Xu B, Zhao SH, Lu MJ, Shen R, Fang W, Wu WC, Chen X, Wang Y, Li W, Lu XF, Jiang XF, Ma CC, Li JW, Geng YJ, Qiao SB, Gao RL, Yang YJ. Transplantation efficacy of autologous bone marrow mesenchymal stem cells combined with atorvastatin for acute myocardial infarction (TEAM-AMI): rationale and design of a randomized, double-blind, placebo-controlled, multi-center, Phase II TEAM-AMI trial. Regen Med 2019; 14:1077-1087. [PMID: 31829095 DOI: 10.2217/rme-2019-0024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Aim: To determine the efficacy and safety of intracoronary infusion of autologous bone marrow mesenchymal stem cells (MSCINJ) in combination with intensive atorvastatin (ATV) treatment for patients with anterior ST-segment elevation myocardial infarction-elevation myocardial infarction. Patients & methods: The trial enrolls a total of 100 patients with anterior ST-elevation myocardial infarction. The subjects are randomly assigned (1:1:1:1) to receive routine ATV (20 mg/d) with placebo or MSCsINJ and intensive ATV (80 mg/d) with placebo or MSCsINJ. The primary end point is the absolute change of left ventricular ejection fraction within 12 months. The secondary end points include parameters in cardiac function, remodeling and regeneration, quality of life, biomarkers and clinical outcomes. Results & conclusion: The trial will implicate the essential of cardiac micro-environment improvement (‘fertilizing’) for cell-based therapy. Clinical Trial Registration: NCT03047772.
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Affiliation(s)
- Jun-Yan Xu
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Hai-Yan Qian
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Pei-Sen Huang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Jun Xu
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Yu-Yan Xiong
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Wen-Yang Jiang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Yi Xu
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Wen-Xiu Leng
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Xiang-Dong Li
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Gui-Hao Chen
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Rui-Jie Tang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Cun-Rong Huang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Meng-Jin Hu
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Chen Jin
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Yuan Wu
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Jun Zhang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Jie Qian
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Bo Xu
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Shi-Hua Zhao
- Department of Radiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Min-Jie Lu
- Department of Radiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Rui Shen
- Department of Nuclear Medicine, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Wei Fang
- Department of Nuclear Medicine, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Wei-Chun Wu
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Xi Chen
- Center of Laboratory Medicine, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Yang Wang
- Medical Research & Biometrics Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Wei Li
- Medical Research & Biometrics Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Xiang-Feng Lu
- Department of Epidemiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Xi-Feng Jiang
- Hebei Better Cell Biological Technology Co., Ltd, Hebei 050000, China
| | - Chun-Cheng Ma
- Hebei Better Cell Biological Technology Co., Ltd, Hebei 050000, China
| | - Jian-Wen Li
- Hebei Better Cell Biological Technology Co., Ltd, Hebei 050000, China
| | - Yong-Jian Geng
- The Center for Cardiovascular Biology & Atherosclerosis Research, Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Shu-Bin Qiao
- Hebei Better Cell Biological Technology Co., Ltd, Hebei 050000, China
| | - Run-Lin Gao
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
| | - Yue-Jin Yang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100037, China
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Li JA, Wu WC, Ji Y, Liu LX, Rao SX, Wang DS, Zhang YQ, Yao XZ, Fan Y, Huang C, Zhou YH, Lou WH. [Diagnostic value and patient compliance of a pancreas-oriented multidisciplinary clinic: a retrospective analysis from a Chinese pancreatic disease center]. Zhonghua Wai Ke Za Zhi 2019; 57:912-916. [PMID: 31826595 DOI: 10.3760/cma.j.issn.0529-5815.2019.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the role of multidisciplinary team (MDT) clinic in the diagnosis of pancreatic diseases and patient compliance with MDT advice in the current medical system. Methods: The study included 512 patients that had visited the pancreas-oriented MDT clinic of Zhongshan Hospital between May 2015 and May 2019.The clinical and pathological data were collected and analyzed retrospectively. Diseases were classified in accordance with 2010 WHO classification of tumors of the digestive system and usual clinical practices. Compliance was determined according to whether a patient received corresponding therapies or undergoing further checks or follow-ups. Results: Among the 512 patients that had visited the MDT clinic, 121 patients were referred due to undetermined diagnosis. Classified according to the final diagnosis, the rate of undetermined diagnosis in different disease categories from high to low in order was inflammatory diseases of the pancreas (75.0%, 24/32), other lesions of the pancreas (56.1%,23/41), pancreatic cystic lesions (19.1%,17/89), pancreatic carcinomas (18.3%,48/262) and pancreatic neuroendocrine neoplasms (pNEN)(10.2%,9/88). The MDT clinic made diagnosis to 68 patients directly with an accuracy of 89.7%. The rate of compliance in the entire cohort was 63.4%. The rate of compliance of patients from June 2017 to May 2019 (68.4%) was higher than that of patients from May 2015 to May 2017(59.6%). The compliance rate of patients in different disease categories from high to low in order was inflammatory diseases of the pancreas(84.4%, 27/32), pancreatic carcinomas (67.9%, 178/262), pNEN(60.2%,53/88), other lesions of the pancreas (56.1%,23/41), and pancreatic cystic lesions(49.4%, 44/89). The compliance rate of patients with different MDT advice from high to low in order was best supportive care(78.6%,22/28), antitumor approaches beyond surgery(71.6%,159/222), further tests(62.6%, 77/123), surgery(53.7%, 65/121) and follow-up(49.2%, 31/63). In patients suggested for surgery, the compliance rate of patients with carcinomas(67.4%, 33/49) was higher than patients with other kinds of neoplasms. Conclusions: MDT clinic could facilitate the diagnosis of pancreatic diseases conveniently and inexpensively. The overall compliance rate of MDT clinic patients is rather low, and patients with carcinomas have a relative high rate of compliance with the suggestion of surgery.
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Affiliation(s)
- J A Li
- Department of Pancreatic Surgery, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - W C Wu
- Department of Pancreatic Surgery, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - Y Ji
- Department of Pathology, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - L X Liu
- Department of Interventional Radiology, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - S X Rao
- Department of Radiology, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - D S Wang
- Department of Pancreatic Surgery, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - Y Q Zhang
- Endoscopy Center, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - X Z Yao
- Department of Radiology, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - Y Fan
- Department of Traditional Chinese Medicine, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - C Huang
- Department of Liver Surgery, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - Y H Zhou
- Department of Medical Oncology, Zhongshan Hospital Fudan University, Shanghai 200032, China
| | - W H Lou
- Department of Pancreatic Surgery, Zhongshan Hospital Fudan University, Shanghai 200032, China
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Cheng XL, Liu BY, Wu WC, Li W, Huang L, Yang T, Liu ZH, Wang H, He JG, Xiong CM. Impact of right ventricular dyssynchrony on prognosis of patients with idiopathic pulmonary arterial hypertension. Pulm Circ 2019; 9:2045894019883609. [PMID: 31692686 PMCID: PMC6811764 DOI: 10.1177/2045894019883609] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 09/29/2019] [Indexed: 02/05/2023] Open
Abstract
Idiopathic pulmonary arterial hypertension is a progressive disease with high mortality with an increasing burden of right ventricular. Right ventricular dyssynchrony was observed in idiopathic pulmonary arterial hypertension, but the association with mortality is unclear. This study aimed to investigate the impact of right ventricular dyssynchrony on the survival of idiopathic pulmonary arterial hypertension. A total of 116 patients with idiopathic pulmonary arterial hypertension were enrolled in this study. All these patients underwent comprehensive clinical evaluation. Right ventricular dyssynchrony was assessed by two-dimensional speckle-tracking echocardiography. The time to peak strain (Tpeak) of right ventricular segments were obtained. Right ventricular dyssynchrony was quantified by the standard deviation of the heart rate-corrected Tpeak of right ventricular four segments. All patients were followed up and the primary endpoint was all cause of death. Results found patients with significant right ventricular dyssynchrony present with advanced World Health Organization functional class, worse hemodynamic status and right ventricular function. Right ventricular dyssynchrony was an independent predictive factor for the survival of idiopathic pulmonary arterial hypertension. Kaplan–Meier survival curves showed patients with right ventricular dyssynchrony had worse prognosis. In conclusion, right ventricular dyssynchrony analyzed by speckle-tracking echocardiography provided added value to hemodynamic and echocardiographic parameters in evaluating the survival of patients with idiopathic pulmonary arterial hypertension.
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Affiliation(s)
- Xiao-Ling Cheng
- Department of Internal Medicine (General Medicine), Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Bing-Yang Liu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei-Chun Wu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wen Li
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Li Huang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Tao Yang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhi-Hong Liu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hao Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jian-Guo He
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chang-Ming Xiong
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Li JA, Han X, Fang Y, Zhang L, Lou WH, Xu XF, Wu WC, Kuang TT, Wang DS, Rong YF. [The value of preoperative CA19-9 combined with platelet-to-lymphocyte ratio in predicting invasive malignancy in intraductal papillary mucinous neoplasms]. Zhonghua Wai Ke Za Zhi 2019; 57:170-175. [PMID: 30861644 DOI: 10.3760/cma.j.issn.0529-5815.2019.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore preoperative predictive markers for invasive malignancy in intraductal papillary mucinous neoplasm(IPMN). Methods: The retrospective case-controlled study was adopted.Seventy-nine patients who underwent surgery and with pathologically confirmed IPMN from January 2005 to December 2014 at Department of Pancreatic Surgery, Zhongshan Hospital Fudan University were enrolled.Forty-six patients were male and 33 were female,with an average age of (62.9±8.9)years (range:37-82 years).Tumor sites:56 tumors were located at the head of the pancreas,22 were located at the body and tail of the pancreas,and 1 was located across the whole pancreas.Surgical procedures: 51 patients underwent pancreaticoduodenectomy, 22 patients underwent distal pancreatectomy, 4 patients underwent segmental pancreatectomy and 2 patients underwent total pancreatectomy.IPMNs were classified into non-invasive lesions and invasive carcinomas according to the histopathological findings of the tumor.Thirty-two tumors were non-invasive lesions and 47 were invasive carcinomas.The preoperative findings were compared between patients with non-invasive IPMN and patients with invasive carcinoma by univariate analysis using t test and χ(2) test accordingly,and factors with statistically significance were subsequently submitted to multivariate analysis. Results: Univariate analysis showed that tumor size(P=0.022), carcinoembryonic antigen(P=0.012), CA19-9(P=0.011), lymphocytes(P=0.034), neutrophil-to-lymphocyte ratio(P=0.010)and platelet-to-lymphocyte ratio(PLR)(P=0.004)were predictive markers with statistical significance.Multivariate analysis showed that CA19-9(P=0.012)and PLR(P=0.025) were independent predictive markers for invasive malignancy in IPMN.The area under curve of the combination factor of CA19-9 and PLR(0.864) was larger than that of CA19-9(0.806) or PLR(0.685) alone, and all the authentic indicators of the combination factor were better than those of each alone. Conclusions: CA19-9 and PLR are independent predictive markers for invasive malignancy in IPMN.The combination of CA19-9 and PLR has improved efficacy than each alone.
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Affiliation(s)
- J A Li
- Department of Pancreatic Surgery, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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Liu BY, Wu WC, Zeng QX, Liu ZH, Niu LL, Tian Y, Cheng XL, Luo Q, Zhao ZH, Huang L, Wang H, He JG, Xiong CM. Two-dimensional speckle tracking echocardiography assessed right ventricular function and exercise capacity in pre-capillary pulmonary hypertension. Int J Cardiovasc Imaging 2019; 35:1499-1508. [PMID: 31037475 DOI: 10.1007/s10554-019-01605-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 04/16/2019] [Indexed: 01/05/2023]
Abstract
Resting two-dimensional speckle tracking echocardiography (2D-STE) identified right ventricular (RV) systolic function were reported to predict exercise capacity in pulmonary hypertension (PH) patients, but little attention had been payed to 2D-STE detected RV diastolic function. Therefore, we aim to elucidate and compare the relations between 2D-STE identified RV diastolic/systolic functions and peak oxygen consumption (PVO2) determined by cardiopulmonary exercise testing (CPET) in pre-capillary PH. 2D-STE was performed in 66 pre-capillary PH patients and 28 healthy controls. Linear correlation and multivariate regression analyses were performed to evaluate and compare the relations between RV 2D-STE parameters and PVO2. Receiver operating characteristic curves were used to compare the predictive value of 2D-STE parameters in predicting the cut-off-PVO2 < 11 ml/min/kg. There were significant differences of all the 2D-STE parameters between PH patients and healthy controls. In patients, RV-peak global longitudinal strain (GLS, rs = - 0.498, P < 0.001), RV- peak systolic strain rate (GSRs, rs = - 0.537, P < 0.001) and RV- peak early diastolic strain rate (GSRe, rs = 0.527, P < 0.001) significantly correlated with PVO2, but no significant correlation was observed between RV- peak late diastolic strain rate (GSRa, rs = 0.208, P = 0.093) and PVO2. The first multivariate regression analysis of clinical data without echocardiographic parameters identified WHO functional class, NT-proBNP and BMI as independent predictors of PVO2 (Model-1, adjusted r2 = 0.421, P < 0.001); Then we added conventional echocardiographic parameters and 2D-STE parameters to the clinical data, identified S,(Model-2,adjusted r2 = 0.502, P < 0.001), RV-GLS (Model-3, adjusted r2 = 0.491, P < 0.001), RV-GSRe (Model-4, adjusted r2 = 0.500, P < 0.001) and RV-GSRs (Model-5, adjusted r2 = 0.519, P < 0.001) as independent predictors of PVO2, respectively. The predictive power was increased, and Model-5 including RV-GSRs showed the highest predictive capability. ROC curves found RV-GSRs expressed the strongest predictive value (AUC = 0.88, P < 0.001), and RV-GSRs > - 0.65/s had a 88.2% sensibility and 82.2% specificity to predict PVO2 < 11 ml/min/kg. 2D-STE assessed RV function improves the prediction of exercise capacity represented by PVO2 in pre-capillary PH.
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Affiliation(s)
- Bing-Yang Liu
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Wei-Chun Wu
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Qi-Xian Zeng
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Zhi-Hong Liu
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Li-Li Niu
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Yue Tian
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Xiao-Ling Cheng
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Qin Luo
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Zhi-Hui Zhao
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Li Huang
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Hao Wang
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People's Republic of China
| | - Jian-Guo He
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
| | - Chang-Ming Xiong
- Department of Cardiology, Pulmonary Vascular Disease Center, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167 North Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China.
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Wu WC, Chen SS, Wang K, Yang Y, Wu YF, Zhao L. [Temporal expression of triggering receptors expressed by myeloid cells-1 during the development of experimental periodontitis in rat]. Zhonghua Kou Qiang Yi Xue Za Zhi 2018; 53:157-163. [PMID: 29972971 DOI: 10.3760/cma.j.issn.1002-0098.2018.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Objective: To illuminate the temporal expression of the triggering receptor expressed on myeloid cells-1 (TREM-1) in the experimental periodontitis in rat and to investigate the function of TREM-1 in the pathogenesis of experimental periodontitis in rat. Methods: The experimental periodontitis model was established in the maxillary first molar by means of 'wire ligation + vaccination periodontal pathogen Porphyromanus gingivalis (Pg) + high-sugar diet' in Sprague-Dawley (SD) rats. The experimental animals were divided into six groups: the control group and each of the time points of establishing the models for one week and two to five weeks. There were six rats for each of the six groups. The bone loss of the palatal site was calculated to estimate whether the periodontitis model was successfully established. The expression of TREM-1, proinflammatory cytokines: tumor necrosis factor-α (TNF-α), interleukin (IL)-1β and IL-6, anti-inflammatory cytokines: IL-4, IL-10 and transforming growth factor-β (TGF-β) were examined by using quantitative real-time PCR. The expression level of TREM-1 protein was analyzed by the method of immunohistochemistry. Results: The average bone loss area of the palatal site was (0.17±0.04) mm(2) in the group of three weeks and was statistically significant (P<0.05) compared to the control group [(0.10±0.01) mm(2)]. The experimental periodontitis model was successfully established in the group of three weeks. The expression of TREM-1 increased significantly in the inflamed periodontal tissues and reached to its maximum expression in the three weeks group accounting for 159.50±38.26 in protein expression and 4.35±0.60 in mRNA expression, respectively. TREM-1 expression difference between the three weeks group and control group was statistically significant (P<0.01). The expression of IL-6 by gingival tissues was correlated with the mRNA level of TREM-1 (r=0.813 P=0.049). Conclusions: TREM-1, as a proinflammatory receptor, could facilitate the periodontal inflammatory response. The possible way of TREM-1 to promote inflammation may be through controling the expression of IL-6.
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Affiliation(s)
- W C Wu
- Department of Periodontology, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases(Present address: Department of Periodontology, The Affiliated Stomatological Hospital of Nanchang University & The Key Laboratory of Oral Biomedicine, Jiangxi Province, Nanchang 330006, China)
| | - S S Chen
- Department of Periodontology, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases (Present address: Medical Center of Stomatology, Beijing An Zhen Hospital, Capital Medical University, Beijing 100029, China)
| | - K Wang
- Department of Periodontology, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases
| | - Y Yang
- Department of Periodontology, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases
| | - Y F Wu
- Department of Periodontology, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases
| | - L Zhao
- Department of Periodontology, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases
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Wu WC, Wang W, Song HM, Ma MS, Tang XY, Jian S, Zhang MQ, Xiao J, Qiu ZQ, Liu YL. [A major histocompatibility complex class Ⅱ deficiency case report and literature review]. Zhonghua Er Ke Za Zhi 2017; 54:614-8. [PMID: 27510876 DOI: 10.3760/cma.j.issn.0578-1310.2016.08.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To summarize and report the clinical characteristics and laboratory results of a case and those reported in literature with MHC class Ⅱ deficiency. METHOD The clinical features, laboratory results and gene mutation analysis of an infant with MHC class Ⅱ deficiency, who was diagnosed and treated in Peking Union Medical College Hospital since December 2013, were retrospectively analyzed."Major histocompatibility complex class Ⅱ deficiency"or"bare lymphocyte syndrome"were used as keywords in order to retrieve reports from CNKI (from its establishment to October 2015) and Wanfang Database (from its establishment to October 2015), PubMed Database (from its establishment to October 2015) was searched. The characteristics, diagnosis, treatment and prognosis were summarized by reviewing related articles. RESULT The patient was a 8-month-old boy. Since the fourth month of life, he started to have repeated fever, susceptible to a variety of pathogens, immune hemolytic anemia, severe malnutrition, and finally diagnosed as MHC class Ⅱ deficiency disease when he was 20-month-old.No related reports were retrieved from CNKI and Wanfang database, there were 20 articles and 179 patients were reported worldwide in the past 10 years. Patients exhibit an extreme vulnerability to infections(resptratory infection(82%, 146/178), inpection of gastroin testinal(76%, 135/178)). The common laboratory examinations showed hypogammaglobulinemia, CD4(+) lymphopenia(93%, 107/115) etc. Diagnosis relies on the flow-cytometric analysis and genetic analysis. CONCLUSION It is considered necessary for patients with young onset age, manifestation of clinically opportunistic infection as immune deficient disease, including the MHC class Ⅱ deficiency disease, especially long-term diarrhea, poor development and cryptosporidium infection. This disease could coexist with autoimmune disorders.
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Affiliation(s)
- W C Wu
- Department of Pediatrics, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing 100730, China
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Chen SS, Wang K, Zhao J, Wu WC, Wu YF, Zhao L. Increased expression of triggering receptor expressed on myeloid cells 1 and 2 in inflamed human gingiva. J Periodontal Res 2016; 52:512-521. [PMID: 27624412 DOI: 10.1111/jre.12417] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2016] [Indexed: 02/05/2023]
Abstract
BACKGROUND AND OBJECTIVE Periodontitis is an infectious disease in which the host immune and inflammatory responses play essential roles in resistance to bacterial infection, as well as the induction of tissue destruction if the immune response is dysregulated. The triggering receptor expressed on myeloid cells (TREMs) modulates inflammatory and innate immune signaling. TREM-1 is considered as an amplifier of the immune response, while TREM-2 is a negative regulator that has yet to be explored in periodontal disease before. We hypothesized that TREMs participated in the innate immune responses during the pathogenesis of periodontitis. Therefore, the aim of this study was to evaluate TREM-1 and TREM-2 expression in the gingival tissues from patients with chronic periodontitis and healthy subjects as well as their correlation with clinical periodontal parameters. This study is the first to identify TREM-2 in periodontal tissue, as well as the protein expression changes of TREM-1 and TREM-2 in periodontal tissues. MATERIAL AND METHODS Gingival tissue sections were collected from 31 healthy subjects and 53 patients with chronic periodontitis. Immunohistochemistry and quantitative real-time polymerase chain reaction were employed to evaluate the protein and mRNA expression of these receptors in gingival tissues. The recorded clinical parameters were probing depth, clinical attachment loss, plaque index and bleeding on probing. RESULTS In addition to myeloid cells in gingival connective tissues, TREM-1 and TREM-2 were also found expressed in gingival epithelial cells. In particular, TREM-1 was detected in almost all gingival epithelium from both healthy and inflamed biopsies. The expression levels of TREM-1 and TREM-2 were significantly increased in the periodontitis group compared to the healthy group. Increased levels of these receptors are to be positively correlated with site-specific periodontal parameters. CONCLUSION The increased expression of TREM-1 and TREM-2 levels in periodontitis may confer diagnostic and potential therapeutic targets as well as indicating their association with the clinical severity of the disease.
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Affiliation(s)
- S S Chen
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China.,Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - K Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China.,Department of Stomatology, University of Electronic Science and Technology of China Hospital, Chengdu, Sichuan, China
| | - J Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Curtin University, Perth, WA, Australia
| | - W C Wu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Y F Wu
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - L Zhao
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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Wu WC, Wong TC, Yip TH. Chronic Finger Joint Instability Reconstructed With Bone–Ligament–Bone Graft from the Iliac Crest. ACTA ACUST UNITED AC 2016; 29:494-501. [PMID: 15336756 DOI: 10.1016/j.jhsb.2004.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2003] [Accepted: 03/24/2004] [Indexed: 11/25/2022]
Abstract
Five patients with chronic instability of digital joints presented with instability and functional disability. Two patients had ulnar collateral ligament damage of the thumb metacarpophalangeal joint and another had chronic multidirectional instability due to radial collateral ligament, dorsal capsule and palmar plate laxity of the metacarpophalangeal joint of the thumb. The fourth patient had a lax radial collateral ligament and palmar plate of the proximal interphalangeal joint of the little finger and the fifth had chronic laxity of the ulnar collateral ligament of the interphalangeal joint of the thumb. All were reconstructed with bone–ligament–bone graft harvested from the iliac crest. The graft was fixed with screws and joint stability was achieved intra-operatively in all patients. All patients achieved a stable joint with improved functional performance at final followup.
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Affiliation(s)
- W C Wu
- Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China.
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Wong TC, Yip TH, Wu WC. Carpal Ligament Injuries with Acute Scaphoid Fractures – A Combined Wrist Injury. ACTA ACUST UNITED AC 2016; 30:415-8. [PMID: 15935528 DOI: 10.1016/j.jhsb.2005.02.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2004] [Accepted: 02/28/2005] [Indexed: 11/20/2022]
Abstract
Fifty-two consecutive patients with acute scaphoid fractures were treated by closed reduction and percutaneous screw fixation. In addition, all underwent a wrist arthrogram and 22 patients also underwent a wrist arthroscopy. Eighteen patients (34%) had an associated carpal ligament injury (four scapholunate ligament, eight lunotriquetral ligament, two combined, three TFCC and one minor leak from the distal carpal row). These patients had worse Mayo wrist scores (no ligament injury median score = 95: ligament injury median score = 85) at a mean final follow-up of 61 weeks. We advocate that scaphoid fractures with associated carpal ligament injuries should be defined as a combined wrist injury.
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Affiliation(s)
- T C Wong
- Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong SAR, China.
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Ma H, Wu WC, Xie RA, Gao LJ, Wang H. Correlation of Global Strain Rate and Left Ventricular Filling Pressure in Patients with Coronary Artery Disease: A 2-D Speckle-Tracking Study. Ultrasound Med Biol 2016; 42:413-420. [PMID: 26585465 DOI: 10.1016/j.ultrasmedbio.2015.09.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 09/05/2015] [Accepted: 09/21/2015] [Indexed: 06/05/2023]
Abstract
The aim of the present study was to evaluate the role of 2-D speckle-tracking imaging in the prediction of left ventricular filling pressure in patients with coronary artery disease (CAD) and normal left ventricular ejection fraction (LVEF). Eighty-four patients with CAD and 30 healthy controls were recruited prospectively. The longitudinal strain rate (SR) curves were determined in three apical views of the left ventricle long axis. Circumferential and radial SR curves were determined in three short-axis views. Left ventricular end-diastolic pressure (LVEDP) was invasively obtained by left heart catheterization. Compared with the 30 controls, the patients with CAD had significantly lower global SR during early diastole (SRe) and higher E/SRe in three directions of myocardial deformation. CAD patients with elevated LVEDP had significantly lower SRe and higher E/SRe of three deformations. Pearson's correlation analysis revealed that LVEDP correlated positively with E/E' ratio, radial SRe and longitudinal and circumferential E/SRe. LVEDP correlated negatively with longitudinal and circumferential SRe and radial E/SRe. Receiver operating characteristic curve analysis revealed that these SR indexes predicted elevated LVEDP (areas under the curve: longitudinal E/SRe = 0.74, circumferential E/SRe = 0.74, circumferential SRe = 0.70, longitudinal SRe = 0.69, radial E/SRe = 0.68, radial SRe = 0.65), but neither was superior to the tissue Doppler imaging index E/E' (area under the curve = 0.84). The present study indicates that 2-D speckle-tracking imaging is a practical method for evaluating LV filling pressure, but it might not provide additional advantages compared with E/E' in CAD patients.
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Affiliation(s)
- Hong Ma
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Echocardiography, Jiangsu Province Hospital, First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wei-Chun Wu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Rong-Ai Xie
- Department of Cardiology, Peking University Shougang Hospital, Beijing, China
| | - Li-Jian Gao
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hao Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Wu WC, Ma H, Xie RA, Gao LJ, Tang Y, Wang H. Evaluation of Left Ventricular Diastolic Dysfunction with Early Systolic Dysfunction Using Two-Dimensional Speckle Tracking Echocardiography in Canine Heart Failure Model. Echocardiography 2015; 33:618-27. [PMID: 26661342 DOI: 10.1111/echo.13133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND This study evaluated the role of two-dimensional speckle tracking echocardiography (2DSTE) for predicting left ventricular (LV) diastolic dysfunction in pacing-induced canine heart failure. METHODS Pacing systems were implanted in 8 adult mongrel dogs, and continuous rapid right ventricular pacing (RVP, 240 beats/min) was maintained for 2 weeks. The obtained measurements from 2DSTE included global strain rate during early diastole (SRe) and during late diastole (SRa) in the longitudinal (L-SRe, L-SRa), circumferential (C-SRe, C-SRa), and radial directions (R-SRe, R-SRa). Changes in heart morphology were observed by light microscopy and transmission electron microscopy at 2 weeks. RESULTS The onset of LV diastolic dysfunction with early systolic dysfunction occurred 3 days after RVP initiation. Most of the strain rate imaging indices were altered at 1 or 3 days after RVP onset and continued to worsen until heart failure developed. Light and transmission electron microscopy showed myocardial vacuolar degeneration and mitochondrial swelling in the left ventricular at 2 weeks after RVP onset. Pearson's correlation analysis revealed that parameters of conventional echocardiography and 2DSTE showed moderate correlation with LV pressure parameters, including E/Esep' (r = 0.58, P < 0.01), L-SRe (r = -0.58, P < 0.01), E/L-SRe (r = 0.65, P < 0.01), and R-SRe (r = 0.53, P < 0.01). ROC curves analysis showed that these indices of conventional echocardiography and strain rate imaging could effectively predict LV diastolic dysfunction (area under the curve: E/Esep' 0.78; L-SRe 0.84; E/L-SRe 0.80; R-SRe 0.80). CONCLUSION 2DSTE was a sensitive and accurate technique that could be used for predicting LV diastolic dysfunction in canine heart failure model.
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Affiliation(s)
- Wei-Chun Wu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hong Ma
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Department of Echocardiography, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Rong-Ai Xie
- Department of Cardiology, Peking University Shougang Hospital, Beijing, China
| | - Li-Jian Gao
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yue Tang
- The Animal Experimental Center of Fuwai Hospital, Beijing, China
| | - Hao Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Wu WC, Lin PC, Hung CC, Lin HH, Cheng CM, Lee CY, Chiu KF, Lin WY, Huang CT, Wu MT. Clinical risk factors of prediabetes in Taiwanese women without substance uses (tobacco, alcohol, or areca nut). J Formos Med Assoc 2015; 114:1233-9. [DOI: 10.1016/j.jfma.2014.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Revised: 10/08/2014] [Accepted: 10/16/2014] [Indexed: 12/13/2022] Open
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Ma H, Xie RA, Gao LJ, Zhang JP, Wu WC, Wang H. Prediction of Left Ventricular Filling Pressure by 3-Dimensional Speckle-Tracking Echocardiography in Patients With Coronary Artery Disease. J Ultrasound Med 2015; 34:1809-1818. [PMID: 26333567 DOI: 10.7863/ultra.15.14.11010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 01/12/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVES The purpose of this study was to investigate the diagnostic value of 3-dimensional (3D) speckle-tracking echocardiography for estimating left ventricular filling pressure in patients with coronary artery disease (CAD) and a preserved left ventricular ejection fraction. METHODS Altogether, 84 patients with CAD and 30 age- and sex-matched healthy control participants in sinus rhythm were recruited prospectively. All participants underwent conventional and 3D speckle-tracking echocardiography. Global strain values were automatically calculated by 3D speckle-tracking analysis. The left ventricular end-diastolic pressure (LVEDP) was determined invasively by left heart catheterization. Echocardiography and cardiac catheterization were performed within 24 hours. RESULTS Compared with the controls, patients with CAD showed lower global longitudinal strain, global circumferential strain, global area strain, and global radial strain. Patients with CAD who had an elevated LVEDP had much lower levels of all 4 3D-speckle-tracking echocardiographic variables. Pearson correlation analysis revealed that the LVEDP correlated positively with the early transmitral flow velocity/early diastolic myocardial velocity (E/E') ratio, global longitudinal strain, global circumferential strain, and global area strain. It correlated negatively with global radial strain. Receiver operating characteristic curve analysis revealed that these 3D speckle-tracking echocardiographic indices could effectively predict elevated left ventricular filling pressure (LVEDP >15 mm Hg) in patients with CAD (areas under the curve: global longitudinal strain, 0.78; global radial strain, 0.77; global circumferential strain, 0.75; and global area strain, 0.74). These parameters, however, showed no advantages over the commonly used E/E' ratio (area under the curve, 0.84). CONCLUSIONS Three-dimensional speckle-tracking echocardiography was a practical technique for predicting elevated left ventricular filling pressure, but it might not be superior to the commonly used E/E' ratio in patients with CAD who have a normal left ventricular ejection fraction.
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Affiliation(s)
- Hong Ma
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (H.M., L.-J.G., J.P.Z., W.-C.W., H.W.); and Department of Cardiology, Peking University Shougang Hospital, Beijing, China (R.-A.X.)
| | - Rong-Ai Xie
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (H.M., L.-J.G., J.P.Z., W.-C.W., H.W.); and Department of Cardiology, Peking University Shougang Hospital, Beijing, China (R.-A.X.)
| | - Li-Jian Gao
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (H.M., L.-J.G., J.P.Z., W.-C.W., H.W.); and Department of Cardiology, Peking University Shougang Hospital, Beijing, China (R.-A.X.)
| | - Jin-Ping Zhang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (H.M., L.-J.G., J.P.Z., W.-C.W., H.W.); and Department of Cardiology, Peking University Shougang Hospital, Beijing, China (R.-A.X.)
| | - Wei-Chun Wu
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (H.M., L.-J.G., J.P.Z., W.-C.W., H.W.); and Department of Cardiology, Peking University Shougang Hospital, Beijing, China (R.-A.X.).
| | - Hao Wang
- State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China (H.M., L.-J.G., J.P.Z., W.-C.W., H.W.); and Department of Cardiology, Peking University Shougang Hospital, Beijing, China (R.-A.X.).
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Zhang HJ, Wang H, Sun T, Lu MJ, Xu N, Wu WC, Sun X, Wang WG, Lin QW. Assessment of left ventricular twist mechanics by speckle tracking echocardiography reveals association between LV twist and myocardial fibrosis in patients with hypertrophic cardiomyopathy. Int J Cardiovasc Imaging 2014; 30:1539-48. [PMID: 25106760 PMCID: PMC4232740 DOI: 10.1007/s10554-014-0509-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 07/29/2014] [Indexed: 11/23/2022]
Abstract
We aimed to investigate whether left ventricular (LV) twist analysis can detect the extent of myocardial fibrosis in patients with hypertrophic cardiomyopathy (HCM). This prospective case–control study recruited 81 consecutive patients with HCM examined between January 2012 and April 2013. Data of 76 patients were analyzed after excluding 5 patients whose echocardiographic images were of poor quality. Healthy volunteers (n = 46) served as controls. Both groups underwent comprehensive echocardiographic examination (i.e., Bas-Rotation, AP-Rotation, LVEF, LADs, IVST, LAVi, E/Em, LVMI, advanced LV-twist analysis by speckle tracking echocardiography) and magnetic resonance imaging. Between-group differences were analyzed by independent t test; logistic regression analysis was performed to identify effect factors. No significant differences were found between baseline characteristics of HCM and control groups (all p > 0.05). HCM patients had significantly higher Bas-Rotation, AP-Rotation, LV Twist, LVEF, LADs, IVST, LAVi, E/Em and LVMI than controls (all p < 0.0001) and significantly lower LVDd and E/A (both p < 0.001). Bas-Rotation, AP-Rotation, LV-Twist, LADs, IVST, LAVi, E/Em and LVMI were significantly higher in HCM patients with fibrosis than in those without fibrosis (p < 0.001), but no significant differences in other echocardiographic parameters were found between those with and without fibrosis. Age, Bas-Rotation, AP-Rotation, LV twist, LADs, IVST, LAVi, E/A, E/Em, and LVMI were significant effect factors for fibrosis. AUROC analysis showed that LV twist had high discriminatory power to detect extent of myocardial fibrosis (AUC 0.996, 95 % CI 0.989–1.004, p < 0.001). Left ventricular twist mechanics are associated with the extent of myocardial fibrosis. LV-twist assessment by STE may be clinically useful.
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Affiliation(s)
- Hong-Ju Zhang
- Department of Ultrasound, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 167, Bei Lishi Road, Xicheng District, Beijing, 100037, People's Republic of China
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Li L, Yao XL, He XL, Liu XJ, Wu WC, Kuang W, Tang M. Role of mechanical strain and estrogen in modulating osteogenic differentiation of mesenchymal stem cells (MSCs) from normal and ovariectomized rats. Cell Mol Biol (Noisy-le-grand) 2013; Suppl 59:OL1889-OL1893. [PMID: 24209734] [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] [Received: 03/01/2013] [Accepted: 10/22/2013] [Indexed: 06/02/2023]
Abstract
Bone's adaptability to loading depends upon the process of bone remodeling. This adaptive mechanism is restricted in postmenopausal osteoporosis. Differentiation of mesenchymal stem cells (MSCs) is crucial to bone remodeling and regeneration. It is well accepted that mechanical loading influences the fate of MSC differentiation. The aim of this study was to explore the possible restricted mechanism in osteoporotic condition, through investigating response of MSCs from both sham-operated and ovariectomized rats. MSCs were exposed to estrogen and mechanical strain (2%, 1Hz, 6h/day) for 3 days. Osteogenic differentiation and β-catenin protein in MSCs were examined. Exposure to estrogen and mechanical strain alone enhanced expression of Runx2 (Cbfα1), type I collagen (ColI) and activated β-catenin protein in MSCs from both sham-operated and OVX rats. MSCs from both sham-operated and OVX rats stimulated with both mechanical strain and estrogen had higher expression of osteogenic genes and activated β-catenin protein than these cells exposed to estrogen and mechanical strain alone. Osteoporotic MSCs had lower expression of osteogenic genes and protein in the absence and presence of stimulation than did MSCs from sham-operated rats. Cumulatively, our results indicate that mechanical strain and estrogen in vitro enhance osteogenic potential and activation of β-catenin in MSCs from both sham-operated and OVX rats. Estrogen augments strain-induced osteogenic potential and activity of β-catenin in MSCs.
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Affiliation(s)
- L Li
- West China Hospital, Sichuan University Laboratory of Cardiovascular Diseases, Regenerative Medicine Research Center Chengdu China lilianghx@163.com
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Lin QW, Wang WG, Wu WC, Wang H. Left atrial minimum volume by real-time three-dimensional echocardiography as an indicator of diastolic dysfunction. Chin Med J (Engl) 2013; 126:4227-4231. [PMID: 24238502] [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: 06/02/2023] Open
Abstract
BACKGROUND Left atrial (LA) maximum volume is becoming a prognostic biomarker for left ventricular (LV) diastolic dysfunction. However, we assessed LV diastolic function by measuring LA phasic volumes using real-time threedimensional echocardiography (RT3DE) in patients with stable coronary artery disease (CAD). METHODS Sixty-five stable CAD patients with normal LV ejection fraction (LVEF) were divided into three groups according to degree of coronary stenosis: control (n = 15) with <50% stenosis as control group, mildS (n = 25) with mild stenosis (50%-70%) and severeS (n = 25) with >70% stenosis. LA phasic volumes and function were evaluated and compared using RT3DE and two dimensional echocardiography (2DE). N-terminal pro-B-type natriuretic peptide (NT-proBNP) levels were examined. The correlations of RT3DE-derived parameters with other conventional indices were analyzed. RESULTS Significant correlations between RT3DE and 2DE for LA volume measurements were: control, r = 0.93; mildS, r = 0.94; severeS, r = 0.90 (all P < 0.05). Patients with severe coronary stenosis presented higher NT-proBNP level, indices of LA minimum volume and volume before atrial contraction, but lower LA total emptying fraction (LAEF) and LAEFpassive. Significant correlations of RT3DE derived LA volume indices with E/E' (r = 0.695) and NF-proBNP (r = 0.630) level were found. CONCLUSIONS RT3DE derived, LA indices correlate well with NT-proBNP level and may be superior to 2DE measurements for the evaluation of LV diastolic dysfunction. Enlargement of LA minimum volume in stable CAD patients without systolic dysfunction appears earlier and may be better correlated with LV diastolic function than that of LA maximum volume.
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Affiliation(s)
- Qiong-Wen Lin
- Department of Echocardiography, Fuwai Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100037, China
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Liu CS, Chang JY, Wu WC, Mou CY. Possible s±-wave pairing evidenced by midgap surface bound states in Fe-pnictide superconductors. J Phys Condens Matter 2013; 25:365701. [PMID: 23934785 DOI: 10.1088/0953-8984/25/36/365701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A phenomenological theory of tunneling spectroscopy for Fe-pnictide superconductors is developed by taking into consideration asymmetric interface scattering between particle and holes. It is shown that, consistent with anti-phase s(±)-wave pairing, appreciable zero-energy surface bound states exist on the [100] surface of Fe-pnictide superconductors. However, in contrast to the [110] bound states in d-wave cuprate superconductors, these bound states arise as a result of non-conservation of momentum perpendicular to the interface for tunneling electrons and the s(±) pairing, and hence they can only exist in a small window (~ ± 6°) in the orientation of edges near the [100] direction. Our results explain why a zero-bias conductance peak is often observed in tunneling spectroscopy and why, when it disappears, two coherent peaks show up. These results provide unambiguous signals to test for possible s(±)-wave pairing in Fe-pnictide superconductors.
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Affiliation(s)
- C S Liu
- School of Science, Yanshan University, Qinhuangdao 066004, People's Republic of China
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Liu HP, Lin WY, Wang WF, Tsai CH, Wu WC, Chiou MT, Shen CP, Wu BT, Tsai FJ. Genetic variability in copper-transporting P-type adenosine triphosphatase (ATP7B) is associated with Alzheimer's disease in a Chinese population. J BIOL REG HOMEOS AG 2013; 27:319-327. [PMID: 23830383] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Previous experiments demonstrated that transgenic mice carrying both amyloid precursor protein and mutant ATP7B transgenes reduce amyloid plaques and diminish plasma Abeta levels. These experiments showed that a structural change of ATP7B may affect Alzheimers disease (AD) susceptibility. In this study three missense SNPs in ATP7B gene (rs1801243, rs1801244, and rs1801249) were chosen to test whether they were associated with AD. We tested this hypothesis using a case control design. The experimental data showed that there was a significant deviation from Hardy-Weinberg equilibrium (HWE) for SNP rs1801249 (c.3419 T greater than C, Val1140Ala) in the case group (p = 0.014) but not in the control group and that there was an association between SNP rs1801249 and AD under a recessive model (p = 0.003). The data also showed that the genotype frequency distribution of the ATP7B c.1366 G greater than C polymorphism (rs1801244, Val456Leu) differed significantly between the AD patients and the normal subjects (p = 0.012). In addition, the frequency of the TGC haplotype of SNPs rs1801243, rs1801244, and rs1801249 was significantly higher in the AD patients compared with the normal subjects (p = 8.49×10-7). These observations suggested that genetic variations in the copper transporter gene ATP7B might contribute to AD pathogenesis in the Taiwanese population.
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Affiliation(s)
- H P Liu
- Graduate Institute of Acupuncture Science, China Medical University, Taichung, Taiwan
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Xu TF, Jing XL, Luo HG, Wu WC, Liu CS. Interplay between periodicity and nonlinearity of indirect excitons in coupled quantum wells. J Phys Condens Matter 2012; 24:455301. [PMID: 23072970 DOI: 10.1088/0953-8984/24/45/455301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Inspired by a recent experiment of localization-delocalization transition (LDT) of indirect excitons in lateral electrostatic lattices (Remeika et al 2009 Phys. Rev. Lett. 102 186803), we theoretically investigate the interplay between periodic potential and nonlinear interactions of indirect excitons in coupled quantum wells. It is shown that the model involving both attractive two-body and repulsive three-body interactions can lead to a natural account for the LDT of excitons across the lattice when reducing lattice amplitude or increasing particle density. In addition, the observations that the smooth component of the photoluminescent energy increases with increasing exciton density and that the exciton interaction energy is close to the lattice amplitude at the transition are also qualitatively explained. Our model provides an alternative way of understanding the underlying physics of the exciton dynamics in lattice potential wells.
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Affiliation(s)
- T F Xu
- Department of Physics, Yanshan University, Qinhuangdao 066004, People's Republic of China
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Chen OD, Wu WC, Jiang Y, Xiao MH, Wang H. Assessment of the morphology and mechanical function of the left atrial appendage by real-time three-dimensional transesophageal echocardiography. Chin Med J (Engl) 2012; 125:3416-3420. [PMID: 23044298] [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: 06/01/2023] Open
Abstract
BACKGROUND The left atrial appendage (LAA) is an important source of thrombus formation. We investigated the feasibility of the recently developed real-time three-dimensional transesophageal echocardiography (RT3D-TEE) method in assessment of the morphology and function of the LAA. METHODS Ninety-six consecutive patients (58 males with a mean age of (43.4 ± 12.5) years) who were referred for 2-dimensional (2D) transesophageal echocardiography (TEE) underwent additional RT3D-TEE. LAA morphology was visualized in multiple views. Orifice size, depth, volumes and ejection fraction (EF) of the LAA, were measured. RESULTS All the patients underwent RT3D-TEE examination without complications. Ninety-two patients (95.8%) had adequate images for visualization and quantitative analysis of the LAA. The LAA exhibited great variability with respect to relative dimensions and morphology. LAA orifice area was (3.8 ± 1.2) cm(2) with a diameter of (2.4 ± 0.9) cm × (1.4 ± 0.6) cm. The mean depth of the LAA was (2.9 ± 0.7) cm. End-diastolic volume (EDV-LAA), end-systolic volume (ESV-LAA) and EF of the LAA were (6.2 ± 3.7) ml, (4.1 ± 2.8) ml, and 0.35 ± 0.16, respectively. EDV-LAA, ESV-LAA and the orifice area of the LAA in patients with atrial fibrillation (AF) were larger than those without AF, whereas the EF was smaller in the AF patients. CONCLUSIONS Defining LAA morphology and quantitative analysis of the size and function of the LAA with superior quality and resolution of images using RT3D-TEE is feasible. This technique may be an ideal tool for guidance of the LAA occlusion procedure. Determination of LAA volumes and volume-derived EF by RT3D-TEE provides new insights into the analysis of LAA function.
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Affiliation(s)
- Ou-di Chen
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
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Abstract
Finger joint defects in 16 adults were treated with an autologous osteochondral graft from the base of the second metacarpal, the radial styloid, the base of the third metacarpal or the trapezoid and these patients were followed up from between 12 and 62 months. There was no donor site morbidity. One patient had resorption of the graft and developed pain. The joint was subsequently fused. The mean range of movement was 55.8% of the opposite normal joint. At follow up, 15 patients had no discomfort or mild discomfort. Three had mild narrowing of the joint space and two had slight joint subluxation. Only two patients with concomitant severe injury to the same limb had difficulty performing daily activities. Ten were open injuries and these had poorer outcomes. A hemicondylar defect of a finger joint can be treated using an osteochondral graft obtained from the same hand.
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Affiliation(s)
- W C Wu
- Sports Medicine Centre, Hong Kong Sanatorium and Hospital, Hong Kong
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Malandrino N, Wu WC, Taveira TH, Whitlatch HB, Smith RJ. Association between red blood cell distribution width and macrovascular and microvascular complications in diabetes. Diabetologia 2012; 55:226-35. [PMID: 22002006 DOI: 10.1007/s00125-011-2331-1] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Accepted: 09/09/2011] [Indexed: 02/07/2023]
Abstract
AIMS/HYPOTHESIS Red blood cell distribution width (RDW) has been reported to be a risk marker of morbidity and mortality for cardiovascular disease in various study populations. However, no studies have investigated the relationship between RDW and diabetes complications. We therefore evaluated RDW as a marker of macrovascular and microvascular complications in a nationally representative sample of the adult diabetes population in the USA. METHODS A cross-sectional study was performed using the nationwide 1988 to 1994 data set from the Third National Health and Nutrition Examination Survey. The association between RDW quartiles and macrovascular and microvascular complications was evaluated in 2,497 non-pregnant adults aged 20 years and older and affected by diabetes. Logistic regression modelling was used to adjust for potential confounding. RESULTS Compared with the lowest RDW quartile, higher RDW values (3rd and 4th quartiles) were associated with increased adjusted odds of any vascular complication (OR 4th quartile 2.06 [95% CI 1.11, 3.83]), myocardial infarction (OR 4th quartile 2.45 [95% CI 1.13, 5.28]), heart failure (OR 4th quartile 4.40 [95% CI 1.99, 9.72]), stroke (OR 4th quartile 2.56 [95% CI 1.21, 5.42]) and nephropathy (OR 4th quartile 2.33 [95% CI 1.42, 3.82]). The odds of developing diabetic retinopathy were not significantly increased across RDW quartiles. CONCLUSIONS/INTERPRETATION Higher RDW values are associated with increased odds of developing cardiovascular disease and nephropathy in a nationally representative sample of USA adults with diabetes. RDW may be an important clinical marker of vascular complications in diabetes and one that is independent of traditional risk factors and disease duration.
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Affiliation(s)
- N Malandrino
- Division of Endocrinology, Department of Medicine, Warren Alpert Medical School of Brown University, Providence, RI, USA
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Chiu YW, Yin SM, Hsieh HY, Wu WC, Chuang HY, Huang CT. Bereaved females are more likely to suffer from mood problems even if they do not meet the criteria for prolonged grief. Psychooncology 2010; 20:1061-8. [DOI: 10.1002/pon.1811] [Citation(s) in RCA: 20] [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] [Received: 08/14/2009] [Revised: 06/13/2010] [Accepted: 06/15/2010] [Indexed: 11/11/2022]
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Wu WC, Lai CI, Huang LC, Chiu TH, Hung YC, Chang WC. Normal-sized ovarian papillary serous carcinoma: a case report. EUR J GYNAECOL ONCOL 2010; 31:567-569. [PMID: 21061803] [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: 05/30/2023]
Abstract
A normal-sized ovarian papillary serous carcinoma is rare. We present the case of a 46-year-old woman with progressive abdominal fullness of one week's duration. The medical evaluation revealed abdominal carcinomatosis with normal-sized ovaries and an elevated serum CA-125 level of 147,365.8 U/ml. Cytoreductive surgery (hysterectomy, bilateral salpingo-oophorectomy, omentectomy, lymphadenectomy, infracolic omentectomy, peritoneal biopsy, washing cytology, and appendectomy) was performed. The histologic examination revealed an ovarian serous papillary carcinoma. Adjuvant chemotherapy was administered. The serum CA-125 level decreased after completion of treatment. Normal-sized ovarian serous surface papillary carcinomas should be kept in mind as an origin of disease in patients who have peritoneal carcinomatosis, which sometimes is a diagnostic dilemma of the disease source. We report this case to emphasize the clinical symptoms and importance of the early and accurate diagnosis of a normal-sized ovarian papillary serous carcinoma.
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Affiliation(s)
- W C Wu
- Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan
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Wang IJ, Wu YN, Wu WC, Leonardi G, Sung YJ, Lin TJ, Wang CL, Kuo CF, Wu KY, Cheng WC, Chan CC, Chen PC, Lin SL. The association of clinical findings and exposure profiles with melamine associated nephrolithiasis. Arch Dis Child 2009; 94:883-7. [PMID: 19608552 DOI: 10.1136/adc.2009.163477] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Little is known about the exposure profiles of melamine in children. We evaluated the association of clinical findings, exposure patterns and biomarkers with nephrolithiasis in children with potential exposure to melamine. METHODS A case-control study was conducted in children aged 0-16 years with potential exposure to contaminated dairy products. Cases were defined as nephrolithiasis detected by renal ultrasonography. On the basis of different brands of contaminated dairy products consumed, subjects were classified into high exposure, low exposure and control groups with estimated melamine exposure levels of higher than 2.5 ppm, 0.05-2.5 ppm and lower than detection limits <0.05 ppm. We measured urine melamine for those with nephrolithiasis and age-matched and gender-matched controls within the subset of the study population. RESULTS The duration of consumption of contaminated products was longer in children with nephrolithiasis in the high exposure group than in controls (median (IQR) 12.0 (3.3-24.0) vs 6.0 (4.0-7.0) months; p = 0.048). High melamine exposure levels were significantly associated with nephrolithiasis (OR 61.04 (95% CI 12.73 to 292.84)). The risk was found to increase with estimate melamine exposure levels (p for trend <0.001). Two among 10 affected subjects with nephrolithiasis showed elevated urine melamine levels. In comparison, levels of all 20 controls were lower than the detection limit. CONCLUSIONS The risk of melamine-associated nephrolithiasis was related to duration of consumption of contaminated products and estimated melamine exposure levels. Though urine melamine was not a sensitive test, it might serve as an exposure biomarker in melamine-associated nephrolithiasis.
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Affiliation(s)
- I J Wang
- Department of Pediatrics,Taipei Hospital, Taipei, Taiwan
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Wu WC, Chan CL, Wong YW, Cuijpers JP. A study on the influence of breathing phases in intensity-modulated radiotherapy of lung tumours using four-dimensional CT. Br J Radiol 2009; 83:252-6. [PMID: 19723769 DOI: 10.1259/bjr/33094251] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
During gated intensity-modulated radiotherapy (IMRT) treatment for patients with inoperable non-small cell lung cancer (NSCLC), the end-expiration (EE) phase of respiratory is more stable, whereas end-inspiration (EI) spares more normal lung tissue. This study compared the relative plan quality based on dosimetric and biological indices of the planning target volume (PTV) and organs at risk (OARs) between EI and EE in gated IMRT. 16 Stage I NSCLC patients, who were scanned by four-dimensional CT, were recruited and re-planned. An IMRT plan of a prescription dose of 60 Gy per respiratory phase was computed using the iPlan treatment planning system. The heart, spinal cord, both lungs and PTV were outlined. The tumour control probability for the PTV and normal tissue complication probability for all OARs in the EE and EI phases were nearly the same; only the normal tissue complication probability of the heart in EE was slightly lower. Conversely, the conformation number of the PTV, V20 of the left lung, V30 of both lungs, Dmax of the heart and spinal cord, V10 of the heart and D5% of the spinal cord were better in EE, whereas D(mean) of the PTV, V20 of the right lung and maximum doses of both lungs were better in EI. No differences reached statistical significance (p<0.05) except Dmax of the spinal cord (p=0.033). Overall, there was no expected clinical impact between EI and EE in the study. However, based on the practicality factor, EI is recommended for patients who can perform breath-hold; otherwise, EE is recommended.
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Affiliation(s)
- W C Wu
- Hong Kong Polytechnic University, Health Technology and Informatics, Hong Kong, China
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Wu WC. Effects of blood flow on the measurement of resting-state network. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)71503-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Wu WC, Hsiao MW, Ye JC, Hung YC, Chang WC. Malignant transformation of extragonadal endometriosis: a case report. EUR J GYNAECOL ONCOL 2009; 30:563-565. [PMID: 19899417] [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: 05/28/2023]
Abstract
Though malignant transformation of endometriosis has been documented, malignancy arising from extragonadal endometriosis is rare. We present the case of a 39-year-old woman with abdominal pain and fullness after menstruation. Evaluation revealed a cul-de-sac mass and CA-125 level of 1048 U/ml. A hysterectomy, bilateral salpingo-oophorectomy, and omentectomy were performed. Endometrioid adenocarcinoma with a clearly defined transition zone from endometriosis to adenocarcinoma was noted histologically. Adjuvant chemotherapy and GnRH agonist treatment was administered. Serum CA-125 level was 1.51 U/ml 19 months after completion of treatment. Patients with endometriosis and elevated CA-125 levels should be managed aggressively and CA-125 levels monitored until they have normalized.
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Affiliation(s)
- W C Wu
- Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan
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Dai H, Tsay SH, Kuo TT, Lin YH, Wu WC. Neolysogenization of Xanthomonas campestris pv. citri infected with filamentous phage Cf16. Virology 2008; 156:313-20. [PMID: 18644554 DOI: 10.1016/0042-6822(87)90411-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/1986] [Accepted: 10/13/1986] [Indexed: 10/26/2022]
Abstract
All previously described filamentous bacteriophages are capable of persistent infection while their DNA replicates as an episome in the host cell. Filamentous phage Cf16 undergoes an infectious cycle different from other filamentous phages reported heretofore. Upon initial infection with Cf16, infective centers are formed, each of which produces a large number of phage particles. As the infectious cycle progresses, the phage particles released and infective centers formed per carrier cell decrease with time. Finally, the Cf16 enters a "prophage" state, in which the carrier cell becomes lysogenic containing only one complete phage genome in an integrated form. One out of 10(3)-10(6) lysogenic cells can develop spontaneously into an infective center, which releases only one to two phage particles per cell in stationary phase culture. After infection, the Cf16 genome integrates into the host chromosome and replicates as a part of it. Free RF (replicative form) coexists with the integrated form and replicates independently from host chromosome. Upon further division, carrier cells eliminate the free RF at each succeeding generation. When Cf16 reaches the "prophage" state, only the integrated phage genome remains in the carrier cell with no detectable free RF.
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Affiliation(s)
- H Dai
- Institute of Botany, Academia Sinica, Nankang, Taipei, Taiwan, Republic of China
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Wong TC, Wu WC, Cheng HS, Cheng YC, Yam SK. Spontaneous fractures in nursing home residents. Hong Kong Med J 2007; 13:427-429. [PMID: 18057429] [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: 05/25/2023] Open
Abstract
OBJECTIVES To evaluate spontaneous long bone fractures occurring in nursing home residents and to identify what factors put them at risk for fractures. DESIGN Retrospective study. SETTING Department of Orthopaedics and Traumatology of a pubic hospital in Hong Kong. PATIENTS A total of 30 nursing home residents who developed spontaneous long bone fractures between 1994 and 2005 were reviewed. MAIN OUTCOME MEASURES Demographic data, mechanism of injury, pattern of fractures, associated risk factors, complications, outcomes, and post-treatment status. RESULTS The mean age of patients was 84 years. Co-morbidities were as follows: 22 patients were bedridden, 21 required long-term feeding by Ryle's tube, 19 had a history of cerebrovascular accident and 18 of whom had a long bone fracture on the side of the hemiplegia, 15 had dementia, and 25 had lower limb contractures. Closed supracondylar fractures of the femur occurred in 23 patients, 17 of whom presented with limb deformity. In 21 patients, fractures were treated successfully with hinged braces. In one patient, the fracture changed from closed to open. In five patients, the fractures were complicated by sacrum or heel sores, and in one by infected nonunion. In 28 patients, the fractures eventually healed without further complications. Three formerly bedridden patients were able to sit after their fractures had been treated. CONCLUSIONS Female nursing home residents who require long-term Ryle's tube feeding, have dementia, hemiplegia, lower limb contractures, osteoporosis, or are bedridden, are at high risk for spontaneous fractures.
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Affiliation(s)
- T C Wong
- Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong.
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Cheung FMF, Ma L, Wu WC, Siu TH, Choi PT, Tai YP. Oncogenic osteomalacia associated with an occult phosphaturic mesenchymal tumour: clinico-radiologico-pathological correlation and ultrastructural studies. Hong Kong Med J 2006; 12:319-21. [PMID: 16912362] [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: 05/11/2023] Open
Abstract
A middle-aged man presented with bone pain at multiple sites due to tumour-induced osteomalacia. The underlying occult phosphaturic mesenchymal tumour was identified by octreotide scan 5 years after presentation and confirmed by computed tomography. Tumour resection resulted in normalisation of blood chemistry and bone densitometry. Clinico-radiologico-pathological correlation and ultrastructural studies of the tumour threw light on the pathogenesis and pathophysiology of this rare disease.
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Affiliation(s)
- F M F Cheung
- Department of Pathology, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong.
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Abstract
We performed a retrospective review of 28 digits in 28 patients who suffered high-pressure injection injuries of the hand during the last 10 years. They were all men, with a mean age of 36 years. All were work injury and the injuries were classified into mild, moderate and severe and were either treated conservatively or surgically. There were seven patients with mild injuries and six of these were successfully treated by conservative methods. Sixteen patients had moderate injuries and all were successfully treated with repeated debridement and delayed direct closure. The index fingers of two severely injured patients were salvaged with digital artery flaps and the remainder of the involved fingers were amputated. The authors advocate proper identification of mild injuries to allow conservative treatment, the application of digital artery flaps for resurfacing large finger defects and have formulated a treatment protocol according to the severity of the injury.
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Affiliation(s)
- T C Wong
- Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, and Orthopaedic and Sports Medicine Centre, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong SAR, China.
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Abstract
Squamous cell carcinoma of the nail bed is rare, and the disease is often misdiagnosed as a benign condition. Digital amputation is often performed because of the delay in diagnosis and the involvement of the distal phalanx. Between March 1999 and March 2002, 3 patients presented to the Pamela Youde Nethersole Eastern Hospital, Hong Kong, with squamous cell carcinoma of the nail bed. Two of the patients underwent a digit-salvaging procedure-namely, wide local excision and flap coverage-and their functional outcome was satisfactory. The remaining patient received partial amputation of the thumb without significant functional loss. A high degree of suspicion is thus needed to detect squamous cell carcinoma of the nail bed; a biopsy of chronic recurrent nail bed lesions should be performed.
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Affiliation(s)
- T C Wong
- Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Hong Kong.
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Abstract
INTRODUCTION The current study aims to test the importance of the design of total knee prostheses in the 'patella clunk syndrome', which is one of the possible patellofemoral complications that can occur after total knee replacement. MATERIALS AND METHODS Three patient cohorts consisting of 75 consecutive patients with 80 Insall-Burstein II (IB II) total knee replacements; 57 patients with 60 Anatomic Modular Knee (AMK) total knee replacements; and 103 patients with 106 Low Contact Stress Rotating Platform (LCS) total knee replacements were studied during the period from 1995 to 2001. This was an unselected series of elderly patients with knee arthritis of comparable demographics; we excluded only those patients receiving revision surgery. We recorded the preoperative and postoperative Knee Society scores, and the patient subgroups with postoperative patellofemoral complications were analysed in detail and were serially followed up. Radiological analysis followed the recommendation of the Knee Society, and the degree of pain was recorded on a visual analogue scale. Also, since the majority of patients with patella clunk syndrome had refused operation and were followed up for several years, an idea of the natural history of this condition was obtained. RESULTS The relative frequency of occurrence of patella clunk syndrome among patients with the IB II, AMK, and LCS prostheses was 8.8%, 3.3%, and 0%, respectively. The calculated p value is strongly significant when comparing the IB II group with the LCS group (p<0.01); and of borderline significance when comparing the AMK with the LCS group (p=0.05); and not statistically significant between the IB II and AMK groups (p=0.19). Analysis of the results also showed that about half of the patients who underwent conservative treatment still had incapacitating symptoms after several years of follow-up, while the other half showed progressive improvement over time. CONCLUSION Given a good surgical technique in component placement and debridement of the peripatella synovium, the design of a total knee prosthesis has a strong bearing on the incidence of the patella clunk syndrome. The natural history of the patella clunk syndrome reveals that for as yet uncertain reasons about 50% will improve with time even when given conservative treatment.
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Affiliation(s)
- D Ip
- Department of Orthopaedics and Traumatology, Pamela Youde Nethersole Eastern Hospital, Lok Man Road, Chai Wan, Hong Kong.
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Abstract
The electroless deposition rate of Ni-B powder increased with sonication (ultrasonic agitation). The boron content in deposited amorphous powder was about 2.2% with and without sonication. When Ni(II) ion was 20.0 mol/dm(3), deposition efficiency was 65% in 14 mmol/dm(3) dimethylamine boran (DMAB) and 90.2% of Ni(II) ion deposited over 33.9 mmol/dm(3) DMAB adding 100 mg/dm(3) powder. When DMAB ion was 1.7 times of Ni(II) ion, deposition efficiency was 90.2% over 20.0 mmol/dm(3) Ni(II) ion adding 100 mg/dm(3) powder. The optimum ratio of Ni(II) ion and DMAB concentration was 1:1.7. Deposition efficiency was larger about two times compared with that of the stationary state. The powder was amorphous. The particle form was spherical. Particle size of 0.75-1.25 microm was about 40%, and that of 1.25-1.75 microm was about 25%. Crystals of amorphous powder formed by heating from 573 to 773 K.
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Affiliation(s)
- A Chiba
- Department of Materials Chemistry, Faculty of Engineering, Yokohama National University, 79-5, Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan.
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