1
|
Zhang P, Li MY, Zhang ZT. [Research progress and hot topics in metabolic and bariatric surgery]. Zhonghua Nei Ke Za Zhi 2023; 62:1383-1386. [PMID: 38044062 DOI: 10.3760/cma.j.cn112138-20230927-00164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Affiliation(s)
- P Zhang
- General Surgery Center, Beijing Friendship Hospital, Capital Medical University, State Key Laboratory of Digestive Health, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - M Y Li
- General Surgery Center, Beijing Friendship Hospital, Capital Medical University, State Key Laboratory of Digestive Health, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Z T Zhang
- General Surgery Center, Beijing Friendship Hospital, Capital Medical University, State Key Laboratory of Digestive Health, National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| |
Collapse
|
2
|
Yao HW, Zhang P, Yan C, Li ZY, Zhang ZT. [Promote the high-quality development of gastrointestinal surgery with technological concept innovation]. Zhonghua Wai Ke Za Zhi 2023; 62:10-15. [PMID: 38044601 DOI: 10.3760/cma.j.cn112139-20231113-00222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
In the past 30 years, gastrointestinal surgery in China has made significant progress, which is reflected in the gradual standardization of clinical diagnosis and treatment, significant improvement in surgical quality, improvement in short-term and long-term postoperative outcomes, and continuous development of high-quality clinical research. At present, the spectrum of disease in gastrointestinal surgery has changed from traditional benign diseases to malignant diseases represented by gastric cancer and colorectal cancer, metabolic diseases represented by obesity and diabetes, and immune diseases represented by inflammatory bowel disease. It is necessary to carry out full-cycle management for patients. In the new era full of opportunities and challenges, surgeons must be driven by innovation in surgical technology, guided by high-quality clinical research and guaranteed by standardized diagnosis and treatment of diseases, to continue to promote the high-quality development of gastrointestinal surgery in China.
Collapse
Affiliation(s)
- H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| | - P Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| | - C Yan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Z Y Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Gastrointestinal Cancer Center, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| |
Collapse
|
3
|
Shao TN, Zhang ZT, Qiao YJ, Zhao Q, Liu HW, Chen XX, Jiang WM, Yao CL, Chen XY, Chen MH, Dou RF, Xiong CM, Zhang GM, Yang YF, Nie JC. Kondo scattering in underdoped Nd 1-xSr xNiO 2 infinite-layer superconducting thin films. Natl Sci Rev 2023; 10:nwad112. [PMID: 37818115 PMCID: PMC10561711 DOI: 10.1093/nsr/nwad112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 12/25/2022] [Accepted: 03/13/2023] [Indexed: 10/12/2023] Open
Abstract
The recent discovery of superconductivity in infinite-layer nickelates generates tremendous research endeavors, but the ground state of their parent compounds is still under debate. Here, we report experimental evidence for the dominant role of Kondo scattering in the underdoped Nd1-xSrxNiO2 thin films. A resistivity minimum associated with logarithmic temperature dependence in both longitudinal and Hall resistivities are observed in the underdoped Nd1-xSrxNiO2 samples before the superconducting transition. At lower temperatures down to 0.04 K, the resistivities become saturated, following the prediction of the Kondo model. A linear scaling behavior [Formula: see text] between anomalous Hall conductivity [Formula: see text] and conductivity [Formula: see text]is revealed, verifying the dominant Kondo scattering at low temperature. The effect of weak (anti-)localization is found to be secondary. Our experiments can help in clarifying the basic physics in the underdoped Nd1-xSrxNiO2 infinite-layer thin films.
Collapse
Affiliation(s)
- Ting-Na Shao
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Zi-Tao Zhang
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Yu-Jie Qiao
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Qiang Zhao
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Hai-Wen Liu
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Xin-Xiang Chen
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Wei-Min Jiang
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Chun-Li Yao
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Xing-Yu Chen
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Mei-Hui Chen
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Rui-Fen Dou
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Chang-Min Xiong
- Department of Physics, Beijing Normal University, Beijing100875, China
| | - Guang-Ming Zhang
- State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing100084, China
- Frontier Science Center for Quantum Information, Beijing100084, China
| | - Yi-Feng Yang
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing100190, China
- Songshan Lake Materials Laboratory, Dongguan523808, China
| | - Jia-Cai Nie
- Department of Physics, Beijing Normal University, Beijing100875, China
| |
Collapse
|
4
|
Tian X, Huang XX, Zhang ZT, Wei PJ, Wang QX, Chang H, Xiao W, Gao Y. Long-Term Outcome of Rectal Cancer Patients Treated by High-Dose Radiotherapy and Concurrent Chemotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e345. [PMID: 37785200 DOI: 10.1016/j.ijrobp.2023.06.2411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To explore the therapeutic efficacy and adverse effects of high-dose radiotherapy concurrently with chemotherapy in treating patients with non-metastatic rectal cancer. MATERIALS/METHODS Patients were enrolled if they were diagnosed with stage I-III rectal adenocarcinoma, refused surgery and received high-dose pelvic radiotherapy and concurrent chemotherapy instead. Their clinical data were retrospectively analyzed for calculating local control and survival rates. Treatment related toxicities was evaluated according to the Common Terminology Criteria for Adverse Events (version 5.0). RESULTS Between April 2006 and February 2021, a total of 93 patients in our medical center were eligible for this study, with a median age of 61 (range, 21-84) years. Of those, 86 (92.5%) patients had tumors located within 5 cm of the anal verge. There were 8 (8.6%), 30 (32.3%) and 55 (59.1%) patients diagnosed with stage I, II and III, respectively. All patients received fluorouracil-based chemotherapy (single-agent fluorouracil or FOLFOX regimen). The irradiation techniques included three-dimensional conformal and intensity-modulated radiation therapy. The median total radiation dose for gross tumor volume (GTV) was 80 (range, 60-90) Gy. The 15 (16.1%) patients refusing surgery before treatment received one course of radiation (60-70 Gy/30-35 Fr). And a 2-course radiation (Course 1, 45-50 Gy/25 Fr; Course 2: 24-40 Gy/12-20 Fr) were given to the 78 (83.9%) patients who failed to achieve clinical complete remission (cCR) after neoadjuvant chemoradiotherapy but still refused surgery, with a median interval of 79 (range, 35-195) days. The median follow-up duration was 66 (range, 10-161) months. The 3- and 5-year overall survival (OS) rates for all patients were 90.5% and 72.7%, respectively. The clinical complete remission rate at the end of chemoradiotherapy was 69.9%. Colostomy was performed in the 14 patients whose rectal tumor did not attain cCR or progressed. There was no grade 4/5 severe acute toxicity. No patient suffered from intestinal perforation. Only one patient developed anal stenosis. Because of rectal bleeding, blood transfusion was performed in 7 patients, and one patient underwent an enterostomy. CONCLUSION High-dose radiotherapy concurrent with chemotherapy brought encouraging survival outcomes, satisfactory organ preservation and acceptable short- and long-term side effects. It might be a safe and non-invasive alternative to abdominoperineal resection in rectal cancer patients refusing or unsuitable for surgery, especially for those with a low-position tumor.
Collapse
Affiliation(s)
- X Tian
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - X X Huang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Z T Zhang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - P J Wei
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Q X Wang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - H Chang
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - W Xiao
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Y Gao
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| |
Collapse
|
5
|
Chen X, Deng YD, Qiu XS, Chen YX, Zhang ZT. Analysis of the curative effect and prognostic factors in patients with scapular fracture with surgical indications after conservative treatment: a case series and clinical outcomes. Quant Imaging Med Surg 2023; 13:5130-5140. [PMID: 37581085 PMCID: PMC10423348 DOI: 10.21037/qims-23-278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 06/05/2023] [Indexed: 08/16/2023]
Abstract
Background The choice of treatment for scapular fractures is a topic worth discussing. The type of scapular fracture is often complex, and more and more scholars prefer surgical treatment to obtain better shoulder joint function. In addition, because of the rich blood supply and muscles of the scapula, some scholars believe that simple suspension can also achieve satisfactory clinical effects. The aim of this study was to investigate the curative effect and prognostic factors of patients with scapular fracture with indications for surgery after receiving conservative treatment. Methods Patients with scapular fracture who did not receive surgical treatment from July 2016 to May 2021 were recruited from the orthopedic trauma database of Nanjing Gulou Hospital, and the data from patients with indications for surgery were screened out for a retrospective analysis. The data were obtained from the database of orthopaedic trauma patients in Nanjing Drum Tower Hospital. The relevant data were recorded during telephone and video follow-up visits. Linear regression was used to analyze the factors associated with disabilities of the arm, shoulder and hand (DASH) score after receiving conservative treatment. Results A total of 21 patients were included in the final statistical analysis. All patients were followed up for 31.0±20.3 (range, 6-63) months, aged 52.9±12.7 (range, 27-71) years. All fractures had clinical healing with a 100% recovery satisfaction rate. Outcome measures of efficacy [both DASH scores and visual analogue scale (VAS) scores], were correlated with whether the fracture involved the superior border of the scapular, were not associated with the following variables: age (P=0.18), Injury Severity Score (ISS) score (P=0.10), the glenopolar angle (GPA) value (P=0.76), superior shoulder suspensory complex (SSSC) injury (P=0.82), and glenoid fracture (P=0.84). The range of motion of the affected shoulder was significantly reduced compared to the healthy shoulder (P<0.01), but the range of forward flexion and elevation was not significantly different from that of the healthy shoulder (P>0.05). Patients with fractures not involving the superior border of the scapula had a much lower range of motion in the affected shoulder than in the healthy shoulder during abduction (P<0.05). Conclusions The range of surgical indications for scapular fractures with scapular fractures involving the lower margin of the scapular can be appropriately narrowed. Some patients with scapular fracture who have surgical indications can regain satisfactory shoulder function after receiving conservative treatment.
Collapse
Affiliation(s)
- Xi Chen
- Department of Orthopedic Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, China
- Department of Shoulder and Elbow Surgery, Luoyang Orthopedic Hospital of Henan Province (Orthopedic Hospital of Henan Province), Zhengzhou, China
| | - Ya-Dian Deng
- Department of Emergency, The First Affiliated Hospital, Henan Traditional Chinese Medicine University, Zhengzhou, China
| | - Xu-Sheng Qiu
- Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Yi-Xin Chen
- Department of Orthopedic Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, China
- Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Zi-Tao Zhang
- Department of Orthopedic Surgery, Nanjing Drum Tower Hospital Clinical College of Nanjing University of Chinese Medicine, Nanjing, China
- Department of Orthopedic Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| |
Collapse
|
6
|
Zhang JH, Liu RQ, Gao Y, Yao HW, Yang YC, Zhang ZT, Lu Y. [Fortify clinical advantages and promote innovative development: comparison of the Chinese Colorectal Cancer Surgery Database with foreign databases]. Zhonghua Wai Ke Za Zhi 2023; 61:362-367. [PMID: 36987669 DOI: 10.3760/cma.j.cn112139-20221113-00480] [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: 03/30/2023]
Abstract
With the continuous development of evidence-based medicine, increasing attention has been paid to the construction of a large medical database to ensure a source of high quality real-world data. The Chinese Medical Association Colorectal Surgery Group created the Chinese Colorectal Cancer Surgery Database (CCCD), whose objective is to promote the development of colorectal surgery and improve patient prognosis with evidence-based medicine theory. Compared to major databases around the world, CCCD contains more comprehensive information on colorectal cancer surgical cases, recording the main epidemiological characteristics and detailed surgical information, but perioperative treatment data still need to be strengthened. It is necessary to continuously expand the coverage, enrich perioperative data and strengthen data, quality control. In the future, CCCD is expected to play a role in promoting homogenization of medical services, promoting smooth and effective graded diagnosis and treatment, giving full role to the characteristics of each center to achieve integrated development, and connecting real-world data and artificial intelligence.
Collapse
Affiliation(s)
- J H Zhang
- Department of Gastrointestinal Surgery, Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - R Q Liu
- Department of Gastrointestinal Surgery, Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - Y Gao
- Department of Gastrointestinal Surgery, Affiliated Hospital of Qingdao University, Qingdao 266555, China
| | - H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Medical Research Center for Digestive Diseases, General Surgery Branch, Clinical Treatment and Research Center of Colorectal Tumor, Capital Medical University, Beijing 100050, China
| | - Y C Yang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Medical Research Center for Digestive Diseases, General Surgery Branch, Clinical Treatment and Research Center of Colorectal Tumor, Capital Medical University, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Medical Research Center for Digestive Diseases, General Surgery Branch, Clinical Treatment and Research Center of Colorectal Tumor, Capital Medical University, Beijing 100050, China
| | - Y Lu
- Department of Gastrointestinal Surgery, Affiliated Hospital of Qingdao University, Qingdao 266555, China
| |
Collapse
|
7
|
Chen X, Deng YD, Qiu XS, Chen YX, Zhang ZT. Analysis of the curative effect and prognostic factors in patients with scapular fracture with surgical indications after conservative treatment: a case series and clinical outcomes. Ann Transl Med 2023. [DOI: 10.21037/atm-23-95] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
|
8
|
Ma HR, Zhang ZT, Jiang J, Li FF, Qiu Y. [Current application and prospect of accurate navigation technology in orthopaedic trauma]. Zhonghua Wai Ke Za Zhi 2023; 61:23-28. [PMID: 36603880 DOI: 10.3760/cma.j.cn112139-20220915-00393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
In the past decades,a dramatic development of navigation technology in orthopaedic surgery has been witnessed. By assisting the localization of surgical region,verification of target bony structure,preoperative planning of fixation,intraoperative identification of planned entry point and direction of instruments or even automated insertion of implants,its ability and potential to reduce operation time,intraoperative radiation,surgical trauma,and improve accuracy has been proved. However,in contrast to the widespread use of navigation technology in arthroplasty,orthopaedic tumor,and spine surgery,its application in orthopaedic trauma is relatively less. In this manuscript,the main purpose is to introduce the technical principles of navigation devices,outline the current clinical application of navigation systems in orthopaedic trauma,analyze the current challenges confronting its further application in clinical practice and its prospect in the future.
Collapse
Affiliation(s)
- H R Ma
- Department of Orthopaedic, Nanjing Drum Tower Hospital,the Affiliated Hospital of Nanjing University Medical School,Nanjing 210008,China
| | - Z T Zhang
- Department of Orthopaedic, Nanjing Drum Tower Hospital,the Affiliated Hospital of Nanjing University Medical School,Nanjing 210008,China
| | - J Jiang
- Department of Orthopaedic, Nanjing Drum Tower Hospital,the Affiliated Hospital of Nanjing University Medical School,Nanjing 210008,China
| | - F F Li
- Department of Orthopaedic, Nanjing Drum Tower Hospital,the Affiliated Hospital of Nanjing University Medical School,Nanjing 210008,China
| | - Y Qiu
- Department of Orthopaedic, Nanjing Drum Tower Hospital,the Affiliated Hospital of Nanjing University Medical School,Nanjing 210008,China
| |
Collapse
|
9
|
Liu Y, Li MY, Zhang M, Zhang P, Zhang ZT. [From mini gastric bypass to one anastomosis gastric bypass, 20 years of one anastomosis gastric bypass]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:869-874. [PMID: 36245110 DOI: 10.3760/cma.j.cn441530-20220630-00287] [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: 06/16/2023]
Abstract
In 2001, Rutledge reported the first case of mini gastric bypass (MGB). Carbajo improved the technique of MGB and named it one anastomosis gastric bypass (OAGB). Over the past 20 years, a large number of clinical and basic studies on OAGB/MGB have been reported, and the answers to some key questions about OAGB/MGB have gradually become clear. From a technical point of view, MGB and OAGB can be regarded as two subvariants of one surgery. The advantages of OAGB/MGB include: (1) simplicity, safety and lower probability of internal hernia;(2) stable and durable weight reduction effect; (3) stable and durable remission rate of type 2 Diabetes. The disadvantages of OAGB/MGB include: (1) bile reflux; (2) higher risk of malnutrition. OAGB/MGB has achieved a good balance between effectiveness and safety, and has become the most noticed and fastest-growing bariatric and metabolic procedure in recent years. OAGB/MGB has been recommended as a standard bariatric and metabolic procedure by IFSO and ASMBS.
Collapse
Affiliation(s)
- Y Liu
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - M Y Li
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - M Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - P Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| |
Collapse
|
10
|
Tan L, Zhang ZT, Qiu XS, Chen YX. [Analysis of risk factors of multiple fractures of limbs complicated with pleural effusion]. Zhongguo Gu Shang 2022; 35:692-697. [PMID: 35859384 DOI: 10.12200/j.issn.1003-0034.2022.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To explore the risk factors of limb fracture complicated with pleural effusion, and to provide reference for the prevention of pleural effusion. METHODS From January 2010 to December 2019, 137 patients with multiple limb fractures were treated surgically, including 102 males and 35 females, aged 16 to 92(48.34±15.85) years. Multiple limb fractures were defined as more than two limb fractures in the whole body, so the selected patients had complete clinical, impact and laboratory examination data before operation, including preoperative chest CT, gender, age, body mass index(BMI), hematocrit(HCT), American Society of Anesthesiologists(ASA), injury severity score (ISS), smoking history of operation, history of diabetes, history of hypertension, admission to operation time, fracture site, platelet count, albumin, C-reactive protein and D-dimer. Whether the patient was complicated with pleural effusion, calculate the amount of pleural effusion were recorded, and the relevant risk factors were statistically analyzed. RESULTS All limb fractures received surgical treatment. The incision healed well after operation, and there were no complications such as wound infection, acute lung injury or acute respiratory distress syndrome. Multivariate regression analysis showed that ISS higher than 16(P=0.000), smoking history(P=0.001) and rib fracture(P=0.000) were the risk factors of multiple limb fractures complicated with pleural effusion. Multivariate linear regression analysis showed that smoking history, ISS and rib fracture were the risk factors for the increase of pleural effusion in multiple limb fractures. CONCLUSION Multiple fractures of limbs combined with pleural effusion are related to ISS, smoking history and rib fracture;the amount of pleural effusion was related to smoking history, ISS and rib fracture. Patients with multiple fractures with ISS greater than 16, smoking history or rib fracture should be vigilant and intervene as soon as possible to reduce the risk of pleural effusion.
Collapse
Affiliation(s)
- Liang Tan
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing 210008, Jiangsu, China
| | - Zi-Tao Zhang
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing 210008, Jiangsu, China
| | - Xu-Sheng Qiu
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing 210008, Jiangsu, China
| | - Yi-Xin Chen
- Nanjing Drum Tower Hospital, the Affiliated Hospital of Nanjing University of Traditional Chinese Medicine, Nanjing 210008, Jiangsu, China
| |
Collapse
|
11
|
Li DM, Song JN, Yang Y, Jin L, Yang YC, Zhang ZT. [Prognosis factors for non-reversal of defunctioning ileostomy in patients with radical resection of rectal cancer]. Zhonghua Wai Ke Za Zhi 2022; 60:756-761. [PMID: 35790528 DOI: 10.3760/cma.j.cn112139-20211008-00474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To examine the prognosis factors for non-reversal of defunctioning ileostomy in rectal cancer surgery. Methods: The data of 234 patients with rectal cancer undergoing radical resection and defunctioning ileostomy in the Department of General Surgery, Beijing Friendship Hospital, Capital Medical University from January 2013 to June 2020 was analyzed retrospectively. There were 166 males and 68 females, aging (M(IQR)) 62(12) years (range: 33 to 89 years). Telephone following-up was conducted intensively in July 2021 to investigate whether stoma was reversed, causes of reversal failure, and tumor recurrence or metastasis after surgery. The non-reversal stoma was defined as stoma not being reversed during the follow-up period (more than 12 months). The χ2 test or Fisher's exact test was used to conduct a univariate analysis of clinical data related to reversal failure, and the factors with P<0.05 were selected into Logistic regression for multivariate analysis. Results: A total of 165 patients received stoma reversal postoperatively with an interval time of (6.5±2.4) months (range: 0.9 to 17.8 months), but 69 patients failed to closure of stoma. Univariate analysis showed that age, concomitant diseases, surgical methods, preoperative hemoglobin, preoperative carcinoembryonic antigen, tumor maximum diameter, depth of invasion, lymph node metastasis, TNM stage, anastomotic-related complications, postoperative tumor local recurrence or distant metastasis were associated with non-reversal of diverting ileostomy in rectal cancer surgery (all P<0.05). Multivariate analysis showed that age (OR=2.270, 95%CI: 1.150 to 4.479, P=0.018), open surgery (OR=7.249, 95%CI: 1.977 to 26.587, P=0.003), preoperative hemoglobin<120 g/L (OR=3.092, 95%CI: 1.566 to 6.105, P<0.01), anastomotic-related complications (OR=4.375, 95%CI: 1.686 to 11.349, P=0.002), postoperative local recurrence or distant metastasis (OR=7.065, 95%CI: 2.591 to 19.264, P<0.01) were independent prognosis factors for reversal failure of defunctioning stoma in rectal cancer surgery. Conclusions: There is a high risk of reversal failure of defunctioning ileostomy among rectal cancer patients with age>65 years, open surgery, preoperative hemoglobin<120 g/L, anastomotic-related complications, postoperative local recurrence or distant metastasis. Colorectal surgeons should fully evaluate the outcome and risk of reversal failure before making a decision of diverting ileostomy. Reducing anastomotic complications is helpful to the successful return of preventive ileostomy.
Collapse
Affiliation(s)
- D M Li
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| | - J N Song
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| | - Y Yang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| | - L Jin
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| | - Y C Yang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Disease, Beijing 100050, China
| |
Collapse
|
12
|
Xu FM, An YB, Wu GC, Zhang X, Yao HW, Zhang ZT. [Short-term complications after transanal total mesorectal excision for mid-low rectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:235-241. [PMID: 35340173 DOI: 10.3760/cma.j.cn441530-20210729-00305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To summarize short-term postoperative complications of transanal total mesorectal excision (taTME) in the treatment of middle-low rectal cancer. Methods: A descriptive case series of cases was constructed. Clinical data of consecutive 83 patients with mid-low rectal cancer who received taTME treatment from November 2016 to April 2021 at Department of General Surgery of Beijing Friendship Hospital, Capital Medical University were collected. Among 83 patients, 58 (69.9%) were males, with a mean age of (61.4±11.8) years; 42 (50.6%) were low rectal cancer, 41 (49.4%) were middle rectal cancer. Short-term postoperative complication was defined as complication occurring within 30 days after operation. The complication was graded according to the Clavien-Dindo classification. At the same time, the morbidity of short-term postoperative complication in the first 40 patients and that in the last 43 patients were compared to understand the differences before and after passing the taTME learning curve. Results: Two patients (2.5%) were converted to laparotomy ; 78 (94.0%) completed anastomosis.While 5 (6.0%) underwent permanent stoma. The total operation time of transabdominal+ transanal procedure was (246.9±85.0) minutes, and the median intraoperative blood loss was 100 (IQR: 100) ml. Seventy-five cases (75 /78, 96.2%) underwent defunctioning stoma, including 74 cases of diverting ileostomy, 1 case of diverting transverse colostomy and 3 cases without stoma. The morbidity of complication within 30 days after operation was 38.6% (32/83), and the morbidity of complication after discharge was 8.4% (7/83). Minor complications accounted for 31.3% (26/83) and major complications accounted for 7.2% (6/83). No patient died within 30 days after operation. The incidence of anastomotic leakage was 15.4% (12/78). Eight patients (9.6%) were hospitalized again due to complications after discharge. The median postoperative hospital stay was 7 (IQR: 3) days. All the patients with minor (I-II) complications received conservative treatment. One patient with grade C anastomotic leakage was transferred to intensive care unit and received a second operation due to sepsis and multiple organ dysfunction. Two patients with paralytic ileus (Clavien-Dindo IIIa) underwent endoscopic ileus catheter placement. There were 3 patients with Clavien-Dindo III or above respiratory complications, including 1 patient with pleural effusion and ultrasound-guided puncture, 2 patients with respiratory failure who were improved and discharged after anti-infection and symptomatic treatment. One patient underwent emergency ureteral stent implantation due to urinary infection (Clavien-Dindo IIIb). The morbidity of postoperative complication in the first 40 cases was 50.0% (20/40), and that in the latter 43 cases decreased significantly (27.9%, 12/43), whose difference was statistically significant (χ(2)=4.270, P=0.039). Conclusions: The procedure of taTME has an acceptable morbidity of short-term postoperative complication in the treatment of mid-low rectal cancer. The accumulation of surgical experience plays an important role in reducing the morbidity of postoperative complication.
Collapse
Affiliation(s)
- F M Xu
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y B An
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - G C Wu
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - X Zhang
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H W Yao
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| |
Collapse
|
13
|
Gui XY, Cheng ZH, Shi HF, Chen YX, Xiong J, Wang JF, Qiu XS, Zhang ZT. Retraction Note to: Single volar locking plating for the intra- and extra-articular distal radius fractures with dorsal metaphyseal comminution. J Orthop Surg Res 2022; 17:81. [PMID: 35139861 PMCID: PMC8827169 DOI: 10.1186/s13018-022-02962-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Xue-Yang Gui
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Zhao-Hui Cheng
- Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Hong-Fei Shi
- Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China.
| | - Yi-Xin Chen
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Jin Xiong
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Jun-Fei Wang
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Xu-Sheng Qiu
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Zi-Tao Zhang
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| |
Collapse
|
14
|
Xu FM, An YB, Yao HW, Zhang ZT. [Problems exposed in retrospective study of postoperative complications of rectal cancer and causal analysis]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:30-35. [PMID: 35067031 DOI: 10.3760/cma.j.cn441530-20210426-00176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Rectal cancer is a great threat to the health of the Chinese people. With the continuous improvement of surgical treatment level, complication as an important indicator to measure the safety of surgery has received increasing attention from clinicians both at home and abroad. Although there are many studies on postoperative complications of rectal cancer, the morbidity of complication reported by related studies varies greatly. An important reason occurs in the limitations of retrospective research, such as incomplete medical records, unclear diagnostic criteria for some complications, incomplete follow-up records after discharge, and poor communication mechanisms among MDT members. Starting from a retrospective study on postoperative complications of rectal cancer and finding out the defects and problems in the registration of complications in each center, then clarifying the definition of various postoperative complications, so as to establish a sound and standardized registration system, and carry out prospective research, this path could be a reliable method to obtain relatively accurate postoperative complications of rectal cancer.
Collapse
Affiliation(s)
- F M Xu
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y B An
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - H W Yao
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| |
Collapse
|
15
|
Gui XY, Cheng ZH, Shi HF, Chen YX, Xiong J, Wang JF, Qiu XS, Zhang ZT. Single volar locking plating for the intra- and extra-articular distal radius fractures with dorsal metaphyseal comminution. J Orthop Surg Res 2021; 16:530. [PMID: 34433474 PMCID: PMC8385909 DOI: 10.1186/s13018-021-02641-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 07/28/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Volar locking plating remains a popular method for the surgical management of distal radius fractures. Dorsal metaphyseal comminution (DMC) is a common fracture pattern which weakens the stability during fracture fixation. In this study, we aimed to compare the radiographic and functional outcome of the intra- and extra-articular distal radius fractures with DMC following single volar locking plate fixation. MATERIALS AND METHODS Patients suffered from a distal radius fracture with DMC were reviewed in the clinical database of the authors' institution between Jan 2016 and Jan 2020. The included patients were classified into the extra-articular (A3) group or the intra-articular (C2 and C3) group according to the AO/OTA system. The radiological parameters, wrist range of motion, and functional outcomes were evaluated following open reduction and volar locking plate fixation. RESULTS A total of 130 patients were included in this study with a mean follow-up length of 17.2 months. Compared with the A3 fracture group, no significant fracture re-displacement or reduced wrist ROMs was observed in the C2 fractures after 12-month's follow-up. However, significantly decreased volar tilt (P = 0.003) as well as the extension/flexion ROMs were observed in the C3 fractures comparing to the A3 fractures. Most of the patients achieved an excellent (n = 75) or good (n = 51) Gartland and Werley wrist score. Four patients with C3 fractures resulted in a fair functional outcome due to a significant loss of volar tilt during follow-up. CONCLUSIONS The single volar locking plate fixation provided sufficient stability for distal radius fractures with DMC, and resulted in similar radiological and functional outcomes in the intra-articular distal radius fractures with a simple articular component (C2 fractures) as those in the extra-articular fractures. Considering the intra-articular fractures with multifragmentary articular component (C3 fracture), despite of the subsequent loss of volar tilt, the majority of the patients achieved good to excellent wrist function following single volar locking plating. TRIAL REGISTRATION This study has been registered on the ClinicalTrials.gov.
Collapse
Affiliation(s)
- Xue-Yang Gui
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Zhao-Hui Cheng
- Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China
| | - Hong-Fei Shi
- Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University, Nanjing, China.
| | - Yi-Xin Chen
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Jin Xiong
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Jun-Fei Wang
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Xu-Sheng Qiu
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| | - Zi-Tao Zhang
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, No. 321 Zhongshan Road, Nanjing, China
| |
Collapse
|
16
|
Yao HW, Xu FM, An YB, Zhang ZT. [Research progress on early diagnosis and prevention of anastomotic leak after rectal cancer surgery]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:480-486. [PMID: 34148312 DOI: 10.3760/cma.j.cn.441530-20210401-00140] [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
Anastomotic leak is a common and serious complication after anterior rectal resection. Despite the continuous advancement of anastomotic instruments and surgical techniques, the incidence of anastomotic leak has not decreased significantly compared with the past. As more studies on the early diagnosis of anastomotic leak are published, postoperative risk factors of anastomotic leak, such as fever, time to first bowel movement, CT, C-reactive protein (CRP) and procalcitonin (PCT), matrix metalloproteinase-9, and other cytokines and biomarkers (IL-6, TNF-α, lactate, pH, urinary neopterin/creatinine ratio), provide a reference for surgeons to assess the risk and increase the possibility of early diagnosis of anastomotic leak. Nevertheless, preventing the occurrence of anastomotic leak is still the ultimate goal. For the prevention of anastomotic leak, intraoperative ICG fluorescence imaging technology provides a simple and safe objective method for surgeons to evaluate anastomotic perfusion. The diversion stoma may reduce the incidence of anastomotic leak. More and more evidence shows that drainage through the anal canal can reduce the incidence of anastomotic leak after rectal cancer, but whether different types of drainage catheters can clearly reduce the incidence of anastomotic leak still needs more evidence. In addition, there has not yet been a unified opinion on the retention time and location of the drainage catheter. At present, the research of anastomotic leak has not adopted a unified definition and the heterogeneity among related studies is still great. We still look forward to more high-quality multi-center large prospective and randomized controlled studies.
Collapse
Affiliation(s)
- H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - F M Xu
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Y B An
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| |
Collapse
|
17
|
Gu L, An YB, Ren MY, Wang Q, Zhang HY, Yu G, Chen JZ, Wu M, Xiao Y, Fu ZC, Zhang H, Tong WD, Ma D, Xu Q, Yao HW, Zhang ZT. [Incidence and risk factors of anastomotic leak after transanal total mesorectal excision in China: a retrospective analysis based on national database]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:505-512. [PMID: 34148315 DOI: 10.3760/cma.j.cn.441530-20210226-00084] [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: Transanal total mesorectal excision (taTME) was a very hot topic in the first few years since its appearance, but now more introspections and controversies on this procedure have emerged. One of the reasons why the Norwegian Ministry of Health stopped taTME was the high incidence of postoperative anastomotic leak. In current study, the incidence and risk factors of anastomotic leak after taTME were analyzed based on the data registered in the Chinese taTME Registry Collaborative (CTRC). Methods: A case-control study was carried out. Between November 15, 2017 and December 31, 2020, clinical data of 1668 patients undergoing taTME procedure registered in the CTRC database from 43 domestic centers were collected retrospectively. After excluding 98 cases without anastomosis and 109 cases without complete postoperative complication data, 1461 patients were finally enrolled for analysis. There were 1036 males (70.9%) and 425 females (29.1%) with mean age of (58.2±15.6) years and mean body mass index of (23.6±3.8) kg/m(2). Anastomotic leak was diagnosed and classified according to the International Study Group of Rectal Cancer (ISREC) criteria. The risk factors associated with postoperative anastomotic leak cases were analyzed. The impact of the cumulative number of taTME surgeries in a single center on the incidence of anastomotic leak was evaluated. As for those centers with the number of taTME surgery ≥ 40 cases, incidence of anastomic leak between 20 cases of taTME surgery in the early and later phases was compared. Results: Of 1461 patients undergoing taTME, 103(7.0%) developed anastomotic leak, including 71 (68.9%) males and 32 (31.1%) females with mean age of (59.0±13.9) years and mean body mass index of (24.5±5.7) kg/m(2). The mean distance between anastomosis site and anal verge was (2.6±1.4) cm. Thirty-nine cases (37.9%) were classified as ISREC grade A, 30 cases (29.1%) as grade B and 34 cases (33.0%) as grade C. Anastomotic leak occurred in 89 cases (7.0%,89/1263) in the laparoscopic taTME group and 14 cases (7.1%, 14/198) in the pure taTME group. Multivariate analysis showed that hand-sewn anastomosis (P=0.004) and the absence of defunctioning stoma (P=0.013) were independently associated with anastomotic leak after taTME. In the 16 centers (37.2%) which performed ≥ 30 taTME surgeries with cumulative number of 1317 taTME surgeries, 86 cases developed anastomotic leak (6.5%, 86/1317). And in the 27 centers which performed less than 30 taTME surgeries with cumulative number of 144 taTME surgeries, 17 cases developed anastomotic leak (11.8%, 17/144). There was significant difference between two kinds of center (χ(2)=5.513, P=0.019). Thirteen centers performed ≥ 40 taTME surgeries. In the early phase (the first 20 cases in each center), 29 cases (11.2%, 29/260) developed anastomotic leak, and in the later phase, 12 cases (4.6%, 12/260) developed anastomotic leak. The difference between the early phase and the later phase was statistically significant (χ(2)=7.652, P=0.006). Conclusion: The incidence of anastomotic leak after taTME may be reduced by using stapler and defunctioning stoma, or by accumulating experience.
Collapse
Affiliation(s)
- L Gu
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - Y B An
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - M Y Ren
- Department of Gastrointestinal Surgery, The Affiliated Nanchong Central Hospital of North Sichuan Medical College, Nanchong 637900, Sichuan Province, China
| | - Q Wang
- Department of Gastrointestinal Surgery, The First Hospital of Jilin University, Changchun 130021, China
| | - H Y Zhang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - G Yu
- Department of Gastrointestinal Surgery, Linzi People's Hospital, Linzi 255200, Shandong Province, China
| | - J Z Chen
- Department of Surgery, Koo Foundation, Sun Yat-sen Cancer Center, Taipei, Taiwan 112, China
| | - M Wu
- Department of Gastrointestinal Hernial Surgery, Yibin Second People's Hospital, Yibin 644000, Sichuan Province, China
| | - Y Xiao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Z C Fu
- Department of Surgery, Mary Hospital, Hong Kong 999077, China
| | - H Zhang
- Department of Colorectal Cancer, Shengjing Hospital, China Medical University, Shenyang 110004, China
| | - W D Tong
- Department of General Surgery, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - D Ma
- Department of General Surgery, Xinqiao Hospital, Army Medical University, Chongqing 400037, China
| | - Q Xu
- Department of Gastrointestinal Surgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200127, China
| | - H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| |
Collapse
|
18
|
Gao JL, An YB, Yao HW, Zhang ZT. [The development process and new requirements of structured training on transanal total mesorectal resection]. Zhonghua Wai Ke Za Zhi 2021; 59:328-331. [PMID: 33915620 DOI: 10.3760/cma.j.cn112139-20200910-00695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Due to the technical difficulty and long learning curve, the benefits of Transanal total mesorectal excision may be obscured by surgical complications that arise from rapid, large-scale development, therefore the surgeons need to receive sufficient training before performing this surgery. At present, a mature structured training system has been formed, but the development of structured training has not met the needs of existing surgical development. In order to standardize the development of transanal total mesorectal excision, the European Society of Colorectal Diseases and 14 international surgical societies recently launched the "International Expert Consensus Guidelines for the Indication, Implementation and Quality Evaluation of Transanal Total Mesorectum Resection". The consensus involves the requirements for trainees, the content and process of training, as well as the evaluation and registration of training results. Training in cadaver is the core of structured training. Beginners should receive repeated training and conduct the surgery under the guidance of instructors.
Collapse
Affiliation(s)
- J L Gao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
| | - Y B An
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
| | - H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
| |
Collapse
|
19
|
Tao K, Ren YP, Li LJ, Gao F, Wang Y, Huang QX, Dong JH, Wang D, Zhang ZT. [Analysis of the clinical confusion and controversy of esophagogastric junction tumor from basic anatomy]. Zhonghua Wai Ke Za Zhi 2021; 59:324-327. [PMID: 33915619 DOI: 10.3760/cma.j.cn112139-20210204-00066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
There are still many controversies in the surgical treatment of esophagogastric junction tumors in terms of surgical approach, cleaning range, and resection scope. The reason is the confusion about the scope of the esophagogastric junction. The previous domestic and foreign anatomy descriptions of this part are not enough to solve the current problems. Based on a large number of basic anatomy and clinical operations, this article proposes that the esophagogastric junction may be wrapped by a complete and separate esophagogastric junction membrane with independent anatomy other than infracardiac bursa. The structure of the transitional tissue, mainly from the distribution of submucosal veins, explained the relationship and significance of tissue transitional changes and clinical operations, and made a reasonable analysis of the current controversy based on the anatomical characteristics, which is worthy of further investigation.
Collapse
Affiliation(s)
- K Tao
- Department of Digestive Minimally Invasive Surgery, Shanxi Provincial Tumor Hospital, Affiliated Tumor Hospital of Shanxi Medical University, Taiyuan 030013, China
| | - Y P Ren
- Department of Digestive Minimally Invasive Surgery, Shanxi Provincial Tumor Hospital, Affiliated Tumor Hospital of Shanxi Medical University, Taiyuan 030013, China
| | - L J Li
- Department of Digestive Minimally Invasive Surgery, Shanxi Provincial Tumor Hospital, Affiliated Tumor Hospital of Shanxi Medical University, Taiyuan 030013, China
| | - F Gao
- Department of Digestive Minimally Invasive Surgery, Shanxi Provincial Tumor Hospital, Affiliated Tumor Hospital of Shanxi Medical University, Taiyuan 030013, China
| | - Y Wang
- Department of Digestive Minimally Invasive Surgery, Shanxi Provincial Tumor Hospital, Affiliated Tumor Hospital of Shanxi Medical University, Taiyuan 030013, China
| | - Q X Huang
- Department of Digestive Minimally Invasive Surgery, Shanxi Provincial Tumor Hospital, Affiliated Tumor Hospital of Shanxi Medical University, Taiyuan 030013, China
| | - J H Dong
- Department of Digestive Minimally Invasive Surgery, Shanxi Provincial Tumor Hospital, Affiliated Tumor Hospital of Shanxi Medical University, Taiyuan 030013, China
| | - D Wang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University; Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing; Clinical Practice and Research Center for Colorectal Cancer, Capital Medical University, Beijing 100050, China
| |
Collapse
|
20
|
Yao HW, Wang Y, An YB, Zhang ZT. [Looking forward to the future direction of colorectal surgery in the perspective of clinical research and data collection]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:225-229. [PMID: 34645166 DOI: 10.3760/cma.j.cn.441530-20210120-00032] [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
Colorectal surgery has been developed rapidly in China because of the advance of minimally invasive surgical techniques, perioperative comprehensive treatment strategies and clinical research in recent years. Comparing the current diagnosis and treatment of colorectal cancer between China and western industrialized countries, it can be found that the specialized construction and standardized diagnosis and treatment of colorectal surgery in western industrialized countries are very mature, and the multidisciplinary diagnosis and treatment model of colorectal cancer has been standardized. Although there is almost no difference between high-level colorectal cancer centers in the eastern coastal areas of China and western countries, due to the vast size and uneven regional development of China, standardized surgery and standardized treatment concepts of colorectal surgery still need to be popularized. Combined with the current diagnosis and treatment of colorectal cancer in China, more high-quality clinical research should be carried out to seek new development and breakthroughs in the field of colorectal surgery. Combined with the experience of international and domestic clinical research that has been participated in or carried out, the author believes that quality control of clinical research should be carried out from the following two points: 1. structured training and quality control of research; 2. establishment and management of databases. In a word, we should not only focus on colon surgery itself, but also complete the transformation to research-oriented doctors and research-oriented disciplines, cultivate the concept of data collection and clinical research, enhance the scientific awareness of clinical research, and integrate high-quality data collection and clinical research into daily clinical practice. Only in this way can we fundamentally improve the comprehensive strength of China's colorectal surgery, effectively carry out surgical-related clinical research based on the current situation colorectal diseases in China, and obtain high-level evidence-based medical evidence based on the research results of the population of patients in China, and form a guide for the diagnosis and treatment of colorectal surgery in China, which will also guide the clinical practice of patients with colorectal diseases in China. This will certainly be a new direction for the development of Chinese colorectal surgery.
Collapse
Affiliation(s)
- H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Y Wang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Y B An
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| |
Collapse
|
21
|
Abstract
As a new antiperovskite nitride, ZnFe3N was synthesized and characterized by almost completely substituting iron atoms at corner positions of γ'-Fe4N. The magnetic interactions of the system with the space group Pm3[combining macron]m are fully investigated. The critical behavior was investigated based on the measured magnetic data around the ferromagnetic phase transition temperature. In this work, the values of critical exponents (β, γ and δ) were obtained systematically using the Kouvel-Fisher method in the critical region. The Widom scaling law (δ = 1 + γβ-1) and the scaling equation (m = f±(h)) were used to reveal the reliability of these values. The values of the critical exponents (β = 0.325, γ = 1.228, and δ = 4.778) are different from those predicted by the three-dimensional (3D) Heisenberg model and mean-field model, and are very close to those of the 3D-Ising model. Combined with ESR analysis, the spin clusters induced by changes in chemical bonds are considered to be the cause for the existence of an anisotropic short-range ordered state in this ferromagnetic system.
Collapse
Affiliation(s)
- W Wang
- Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, P. R. China
| | | | | | | | | | | | | |
Collapse
|
22
|
Wang XJ, Wang Z, Zhang ZT, Qiu XS, Chen M, Chen YX. Plasma Fibrinogen as a Diagnostic Marker of Infection in Patients with Nonunions. Infect Drug Resist 2020; 13:4003-4008. [PMID: 33177850 PMCID: PMC7649214 DOI: 10.2147/idr.s269719] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 09/11/2020] [Indexed: 11/23/2022] Open
Abstract
Background The timely and accurate diagnosis of infected nonunion is challenging, and there is a need for more efficient biomarkers. Previous studies have shown that fibrinogen plays an important role in mediating inflammation in bacterial infections and, therefore, could be a valuable biomarker for infected nonunion. The purpose of this study was to evaluate and compare the performance of plasma fibrinogen and other traditional blood markers for the diagnosis of infected nonunion. Materials and Methods We retrospectively studied 146 patients who underwent surgery for primary nonunion between January 2018 and January 2020. The patients were divided into those with infected nonunion (n = 55) and those with aseptic nonunion (n = 91). The preoperatively analyzed parameters were plasma fibrinogen, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP) level, and white blood cell (WBC) count. Receiver operating characteristic (ROC) curve analysis was used to assess the sensitivity and specificity of the biomarkers, and Youden's index was calculated to determine their optimal cut-off values. Results The plasma fibrinogen values were significantly higher (p < 0.001) in the patients with infected nonunion than in those with aseptic nonunion. ROC curve analysis showed that plasma fibrinogen had a high value of area under the curve (0.816), which indicated that it had good diagnostic ability. Further, at the optimal threshold value of 2.75 g/L, plasma fibrinogen had the highest sensitivity (78.2%; 95% CI = 64.6-87.8) and good specificity (82.4%; 95% CI, 72.7-89.3). Conclusion In comparison to the traditional markers of infection, plasma fibrinogen showed good diagnostic ability for the detection of infected nonunion. It may have potential as a practical and cost-efficient biomarker for the diagnosis of infected nonunion.
Collapse
Affiliation(s)
- Xiang-Jin Wang
- Department of Orthopedics, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, People's Republic of China.,Department of Orthopedics, XuZhou Central Hospital, Xuzhou, People's Republic of China
| | - Zhen Wang
- Department of Orthopedics, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, People's Republic of China.,Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, People's Republic of China
| | - Zi-Tao Zhang
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, People's Republic of China
| | - Xu-Sheng Qiu
- Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, People's Republic of China
| | - Ming Chen
- Department of Orthopedics, XuZhou Central Hospital, Xuzhou, People's Republic of China
| | - Yi-Xin Chen
- Department of Orthopedics, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, People's Republic of China.,Department of Orthopedics, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, People's Republic of China
| |
Collapse
|
23
|
Abstract
Since the 21st century, with the development of minimally invasive surgical technology, the update of comprehensive treatment strategies and the progress of clinical research, colorectal surgery has developed rapidly. However, in recent years, some disputable issues still exist in colorectal surgery, such as transanal total mesorectal excision, pelvic cavity lateral lymph node dissection, the "wait and observe" strategy for clinical complete remission of rectal cancer after neoadjuvant therapy, and robotic colorectal surgical operation. In addition, the application of three dimensions imaging, 4K resolution, 5th generation wireless systems, virtual reality, artificial intelligence and other new techniques may provide extensive space and new opportunity for the development of colorectal surgery. The therapic outcome could be optimized by more relevant clinical research and evidence, which contribute to the standardization of surgical treatment of colorectal cancer.
Collapse
Affiliation(s)
- Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y C Yang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| |
Collapse
|
24
|
Gao JL, An YB, Wang D, Yao HW, Zhang ZT. [Current status of research on short-term quality of life after sphincteric-saving surgery in rectal cancer patients]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:415-420. [PMID: 32306613 DOI: 10.3760/cma.j.cn.441530-20190525-00219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Sphincteric-saving surgery (SSS) is currently a hot spot in the treatment of mid-low rectal cancer. Although it preserves the anatomical continuity of the colon and anus, the postoperative functional outcomes and quality of life (QOL) remains to be confirmed. Current studies have shown that quality of life worsens at the first month after surgery, improves within 3-6 months, and stabilizes at about 1 year. The QOL was associated with patient-related factors, tumor-related factors, treatment-related factors and postoperative complications. For patient-related factors, younger patients have worse role function and sexual function but better cognitive function and physical function. Male patients deteriorate significantly in sexual and social function. For tumor-related factors, patients with lower rectal cancer have poorer defecation function. Those with advanced rectal cancer are more likely to suffer from side-effects related to chemotherapy. For treatment-related factors, patients undergoing intersphincteric resection have worse role function, body image and sexual interest. Preventive ileostomy results in the deterioration of role function, body image and sexual interest. Chemotherapy causes taste changes and chest pain. For postoperative complication, patients with anastomotic leakage have worse bowel function and psychological state. Patients with major low anterior resection syndrome and genitourinary dysfunction have worse global health score, social function and role function. In conclusion, short-term quality of life after sphincteric-saving surgery is acceptable. To improve QOL, specific intervention and guidance should be given to patients in this stage. Meanwhile, since many factors influence the quality of life simultaneously, researchers are confused about the questionnaire outcomes. Therefore, more specific and comprehensive tools are needed to evaluate QQL after sphincteric-saving surgery.
Collapse
Affiliation(s)
- J L Gao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Y B An
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - D Wang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| |
Collapse
|
25
|
Yao HW, Zhang ZT. [Looking back 2019: focusing on the development and research of colorectal surgery in China]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:15-19. [PMID: 31958925 DOI: 10.3760/cma.j.issn.1671-0274.2020.01.003] [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
Although the surgical treatment of colorectal disease progresses slowly, with the advancement of minimally invasive surgical techniques, perioperative comprehensive treatment strategies and clinical research in recent years, Chinese colorectal surgery has developed rapidly. Transanal total mesorectal excision, lateral pelvic lymph node dissection,"watch and wait"strategy for clinical complete response of neoadjuvant radiotherapy for rectal cancer, and robotic colorectal surgery are still hot topics in colorectal surgery in recent years. The construction of clinical registry database and clinical research for colorectal cancer surgery are discussed, with a view to combing the development of colorectal surgery for colleagues in the surgical field, and to seek the development of colorectal surgery in China.
Collapse
Affiliation(s)
- H W Yao
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, & National Clinical Research Center for Digestive Diseases, Beijing 100050, China
| | | |
Collapse
|
26
|
Yang YC, Yang Y, Zhang ZT. [The individualized strategy for lateral pelvic lymph node dissection in advanced rectal cancer]. Zhonghua Wai Ke Za Zhi 2020; 58:52-56. [PMID: 31902171 DOI: 10.3760/cma.j.issn.0529-5815.2020.01.012] [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
Recently, with the development and widespread application of total mesorectal excision and neoadjuvant chemoradiotherapy, the long-term overall survival and disease-free survival of patients with middle & low rectal cancer have been greatly improved. Moreover, there are also researches in minimally invasive techniques, such as laparoscopy and robotic surgical system in the radical rectal surgery, as well as the combination of tumor molecular targeting markers and gene sequencing technology. Nowadays, the treatment of rectal cancer has entered a new era of individualized precise medicine. However, there are still some controversies in lateral lymph node dissection. The criteria of diagnosis and treatment, neoadjuvant therapy, indications of lateral lymph node dissection, the area of dissection and neuroprotection are still unsatisfactory. It is necessary to explore the personalized treatment strategies of lateral lymph node dissection in the precise medical era.
Collapse
Affiliation(s)
- Y C Yang
- Department of General Surgery, National Clinical Research Center for Digestive Diseases, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | | | | |
Collapse
|
27
|
Ge ZC, Qu X, Yu HF, Wang ZH, Zhang HM, Gao YG, Zhang ZT. [Effect of death decoy receptor 3 on prognosis of breast cancer and function of breast cancer cells in vitro]. Zhonghua Yi Xue Za Zhi 2019; 99:1081-1085. [PMID: 30982256 DOI: 10.3760/cma.j.issn.0376-2491.2019.14.009] [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 study the effect of death decoy receptor 3 on the prognosis of breast cancer and the invasive function of breast cancer cells in vitro. Methods: Expression of DcR3 were assessed qualitatively by Q-PCR to analyze the correlation in 115 mammary tissue samples with a 10-year median follow-up. The expression of DcR3 was examined in MCF7 and MDA-MB-231 cell lines using immunocytochemical staining and RT-PCR. DcR3 knock-down cell sub-lines were constructed. The effects of reduced DcR3 expression were observed by establishing invasion and migration models. Results: Patients were divided into the good prognosis group (n=81) and the poor prognosis group (n=26). The expression of DcR3 in the poor prognosis group (133 350+49 646 copies/50 ng RNA)was significantly higher than that in the good prognosis group (5 393+1 428 copies/50 ng RNA, P=0.020). DcR3 transcripts were found to be increased significantly in grade 2 cancers compared to well differentiated grade 1(82 844±34 068 copies/50 ng RNA, n=39,) vs (5 371±3 500 copies/50 ng RNA, n=20, P=0.029).The DcR3 gene of MCF7 cell line and MDA-MB-231 cell line were successfully knocked out and verified that DcR3 knockout. And the invasion and migration of MCF7 cells were inhibited (P=0.009, P=0.001). However, no significant difference was found in these two aspects of the MDA-MB-231 cell line (P=0.475, P=0.102). Conclusion: DcR3 promotes the capacity of invasion of breast cancer cells and plays an important role in the metastasis of breast cancer. DcR3 detection is helpful to the judgment about prognosis of breast cancer.
Collapse
Affiliation(s)
- Z C Ge
- Department of General Surgery, Beijing Friendship Hospital, Capital University of Medical Science, Beijing 100050, China
| | - X Qu
- Department of General Surgery, Beijing Friendship Hospital, Capital University of Medical Science, Beijing 100050, China
| | - H F Yu
- Cancer Institute of Capital Medical University; Beijing Key Laboratory for Cancer Invasion and Metastasis Research, Beijing 100069, China
| | - Z H Wang
- Department of General Surgery, Beijing Friendship Hospital, Capital University of Medical Science, Beijing 100050, China
| | - H M Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital University of Medical Science, Beijing 100050, China
| | - Y G Gao
- Department of General Surgery, Beijing Friendship Hospital, Capital University of Medical Science, Beijing 100050, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital University of Medical Science, Beijing 100050, China
| |
Collapse
|
28
|
Tian YM, Zhuge RS, Zhang ZT, Zheng DX, Ding N, Li YM. Effects of subpressure on the sealing ability of dental sealant in vitro. J Mech Behav Biomed Mater 2018; 85:117-123. [PMID: 29885602 DOI: 10.1016/j.jmbbm.2018.05.023] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/09/2018] [Accepted: 05/14/2018] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Pits and fissures sealing with flowable materials is a popular method for preventing caries in preventive dentistry while there is still microleakage existed. This in vitro study aimed to explore the effects of subpressure technique on the sealing ability of pit and fissure sealant. MATERIALS AND METHODS One hundred and forty-one extracted human premolars were collected in this study and treated with different pressure (atmosphere pressure as group C, -0.04 MPa as group S4 and -0.08 MPa as group S8). Thermocycling (×5000) was also performed. Penetration percentage, microleakage, cross-sectional microhardness (Knoop, KMH) and mineral loss were evaluated. Kappa tests, Friedman nonparametric and two-way ANOVA were used for data analysis. RESULTS Penetration percentages of group S4 and S8 were significant higher compared to that of group C. Microleakage of groups was similar before thermocycling, while subpressure groups showed lower scale of microleakage after thermocycling. Data of KMH and mineral loss showed significant differences between subpressure and thermocycling groups. SIGNIFICANCE Subpressure technique could increase the penetration of pit and fissure sealant, decrease microleakage and increase resistance of demineralization after thermocycling. This novel technique may have great potential for preventing from secondary caries.
Collapse
Affiliation(s)
- Y M Tian
- School of Stomatology, Capital Medical University, Beijing 100050, China
| | - R S Zhuge
- School of Stomatology, Capital Medical University, Beijing 100050, China
| | - Z T Zhang
- School of Stomatology, Capital Medical University, Beijing 100050, China.
| | - D X Zheng
- School of Stomatology, Capital Medical University, Beijing 100050, China.
| | - N Ding
- School of Stomatology, Capital Medical University, Beijing 100050, China
| | - Y M Li
- School of Stomatology, Capital Medical University, Beijing 100050, China
| |
Collapse
|
29
|
Li R, Chen FF, Liu HQ, Wang ZX, Zhang ZT, Wang Y, Cui H, Liu W, Zhao XZ, Sun ZJ, Guo SS. Efficient Capture and High Activity Release of Circulating Tumor Cells by Using TiO 2 Nanorod Arrays Coated with Soluble MnO 2 Nanoparticles. ACS Appl Mater Interfaces 2018; 10:16327-16334. [PMID: 29683641 DOI: 10.1021/acsami.8b04683] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Effective capture and release of circulating tumor cells (CTCs) with high viability is still a challenge in medical research. We design a novel approach with efficient yield and high cell activity for the capture and release of CTCs. Our platform is based on TiO2 nanorod arrays coated with transparent MnO2 nanoparticles. We use hydrothermal synthesis to prepare TiO2 nanorod arrays, the MnO2 nanoparticles are fabricated through in situ self-assembly on the substrate to form a monolayer and etched by oxalic acid with low concentration at room temperature. Up to 92.9% of target cells are isolated from the samples using our capture system and the captured cells can be released from the platform, the saturated release efficiency is 89.9%. Employing lower than 2 × 10-3 M concentration of oxalic acid to dissolve MnO2, the viability of MCF-7 cancer cells exceed 90%. Such a combination of the two-dimensional and three-dimensional platforms provides a new approach isolate CTCs from patient blood samples.
Collapse
Affiliation(s)
- R Li
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology , Wuhan University , Wuhan , 430072 Hubei , P. R. China
| | - F F Chen
- Department of Oncology, Hubei Cancer Clinical Study Center, Hubei Key Laboratory of Tumor Biological Behaviors , Zhongnan Hospital of Wuhan University , Wuhan , Hubei 430072 , P. R. China
| | - H Q Liu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology , Wuhan University , Wuhan , 430072 Hubei , P. R. China
| | - Z X Wang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology , Wuhan University , Wuhan , 430072 Hubei , P. R. China
| | - Z T Zhang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology , Wuhan University , Wuhan , 430072 Hubei , P. R. China
| | - Y Wang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology , Wuhan University , Wuhan , 430072 Hubei , P. R. China
| | - H Cui
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology , Wuhan University , Wuhan , 430072 Hubei , P. R. China
| | - W Liu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology , Wuhan University , Wuhan , 430072 Hubei , P. R. China
| | - X Z Zhao
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology , Wuhan University , Wuhan , 430072 Hubei , P. R. China
| | - Z J Sun
- State Key Laboratory Breeding Base of Basic Science of Stomatology, Key Laboratory of Oral Biomedicine of Ministry of Education, Department of Oral Maxillofacial Head Neck Oncology, School and Hospital of Stomatology , Wuhan University , Wuhan , Hubei 430079 , China
| | - S S Guo
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology , Wuhan University , Wuhan , 430072 Hubei , P. R. China
| |
Collapse
|
30
|
Zhang ZT, Xu C, Dmytriieva D, Molatta S, Wosnitza J, Wang YT, Helm M, Zhou S, Kühne H. Monovacancy paramagnetism in neutron-irradiated graphite probed by 13C NMR. J Phys Condens Matter 2017; 29:465801. [PMID: 29053468 DOI: 10.1088/1361-648x/aa8d47] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We report on the magnetic properties of monovacancy defects in neutron-irradiated graphite, probed by 13C nuclear magnetic resonance spectroscopy. The bulk paramagnetism of the defect moments is revealed by the temperature dependence of the NMR frequency shift and spectral linewidth, both of which follow a Curie behavior, in agreement with measurements of the macroscopic magnetization. Compared to pristine graphite, the fluctuating hyperfine fields generated by the defect moments lead to an enhancement of the 13C nuclear spin-lattice relaxation rate [Formula: see text] by about two orders of magnitude. With an applied magnetic field of 7.1 T, the temperature dependence of [Formula: see text] below about 10 K can well be described by a thermally activated form, [Formula: see text], yielding a singular Zeeman energy of ([Formula: see text]) meV, in excellent agreement with the sole presence of polarized, non-interacting defect moments.
Collapse
Affiliation(s)
- Z T Zhang
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden, Germany. Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, D-01314 Dresden, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Wang D, Yang YC, Yao HW, Jin L, Wang J, Bai ZG, Zhang ZT. [Detection and clinical significance of circulating tumor cells in patients with colorectal carcinoma]. Zhonghua Wai Ke Za Zhi 2017; 55:765-769. [PMID: 29050178 DOI: 10.3760/cma.j.issn.0529-5815.2017.10.010] [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 detect circulating tumor cells (CTC) in patients with colorectal carcinoma and to evaluate the relationship among CTC, clinic-pathological characteristics and prognosis of colorectal carcinoma. Methods: Peripheral blood samples were obtained from 109 patients with colorectal carcinoma in Department of General Surgery, Beijing Friendship Hospital, Capital Medical University from April 2014 to October 2016. There were 60 male and 49 female patients, aging from 33 to 86 years with a mean age of (65±10) years.CTC were detected using density-gradient centrifugation and immunofluorescence staining. χ(2) test, Fisher exact test and rank-sum test were used to analyze the relation between positive rate of CTC and clinical characteristic, respectively. The correlation analysis of CTC and common tumor markers was detected by χ(2) test and Spearman test. The overall survival of patients was analyzed by Kaplan-Meier curve and Cox proportional hazard model. Results: CTC were found in 71 of the 109 patients with colorectal carcinoma. The presence of CTC was significantly correlated with N stage (Z=4.422, P=0.035) and M stage (χ(2)=4.424, P=0.049). However, CTC was not significantly correlated with age, sex, tumor location, tumor size, differentiation, T stage, Ki-67 and TNM stage (P>0.05). Meanwhile, there was significant correlation between CTC and carcino-embryonic antigen (CEA) (χ(2)=4.897, P=0.027; r=0.212, P=0.027) indicated by χ(2) test and Spearman correlations analysis. The positive rate of CTC was higher than that of CEA (χ(2)=15.45, P=0.000). Survival analysis suggested that positive CTC was poor for overall survival in colorectal cancer with adjusted HR as 3.023(95%CI: 1.330 to 6.872, P=0.008). Conclusions: CTC is helpful to early diagnosis tumor recurrence and metastasis. Hence, combined multiple tumor markers, including the CTC as common indicators of tumor diagnosis, relapse and metastasis could effectively improve the accuracy of diagnosis.
Collapse
Affiliation(s)
- D Wang
- Department of General Surgery, Branch Center of General Surgery, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center of Digestive Diseases, Beijing 100050, China
| | | | | | | | | | | | | |
Collapse
|
32
|
Deng HY, Zhang ZT. [Certain experiences in sequential treatment of occlusal reconstruction]. Zhonghua Kou Qiang Yi Xue Za Zhi 2016; 51:708-711. [PMID: 27978909 DOI: 10.3760/cma.j.issn.1002-0098.2016.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Occlusal reconstruction is a complex sequential treatment. The treatment may involve changes in occlusal vertical dimension and the full dental arch occlusal surface reconstruction. In this paper, we discussed the most concerned aspects of prosthodontists during the occlusal reconstruction sequential treatment, how to determine the suitable occlusal vertical dimension, rebuilding of occlusal plane, and consideratiom of temporomandibular joint disorders during reconstruction treatment. The prosthodontists should adopt the multidisciplinary collaboration mode of thinking in analysis, design, treatment, and restoration processes, regarding patients' individual characteristic through the occlusal reconstruction sequential treatment, and to reach healthy, functional, aesthetic outcome eventually.
Collapse
Affiliation(s)
- H Y Deng
- Department of Prosthodontics, Capital Medical University School of Stomatology, Beijing 100050, China
| | - Z T Zhang
- Department of Prosthodontics, Capital Medical University School of Stomatology, Beijing 100050, China
| |
Collapse
|
33
|
Kohlrautz J, Haase J, Green EL, Zhang ZT, Wosnitza J, Herrmannsdörfer T, Dabkowska HA, Gaulin BD, Stern R, Kühne H. Field-stepped broadband NMR in pulsed magnets and application to SrCu2(BO3)2 at 54T. J Magn Reson 2016; 271:52-59. [PMID: 27552555 DOI: 10.1016/j.jmr.2016.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 08/09/2016] [Accepted: 08/10/2016] [Indexed: 06/06/2023]
Abstract
Pulsed magnets generate the highest magnetic fields as brief transients during which the observation of NMR is difficult, however, this is the only route to unique insight into material properties up to the regime of 100T. Here, it is shown how rather broad NMR spectra can be assembled in a pulsed magnet during a single field pulse by using the inherent time dependence of the field for the recording of field-stepped free induction decays that cover a broad frequency range. The technique is then applied to (11)B NMR of the spin-dimer system SrCu2(BO3)2, a magnetic insulator known to undergo a series of field-driven changes of the magnetic ground state. At peak fields of about 54T at the Dresden High Magnetic Field Laboratory, (11)B NMR spectra spanning a total of about 9MHz width are reconstructed. The results are in good accordance with a change from a high-temperature paramagnetic state to a low-temperature commensurate superstructure of field-induced spin-dimer triplets.
Collapse
Affiliation(s)
- J Kohlrautz
- University of Leipzig, Faculty of Physics and Earth Sciences, Linnéstraße 5, 04103 Leipzig, Germany.
| | - J Haase
- University of Leipzig, Faculty of Physics and Earth Sciences, Linnéstraße 5, 04103 Leipzig, Germany
| | - E L Green
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - Z T Zhang
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - J Wosnitza
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany; Institut für Festkörperphysik, TU Dresden, 01062 Dresden, Germany
| | - T Herrmannsdörfer
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| | - H A Dabkowska
- Brockhouse Institute for Materials Research and Department of Physics and Astronomy, McMaster University, 1280 Main Str West, ON L8S 4M1, Canada
| | - B D Gaulin
- Brockhouse Institute for Materials Research and Department of Physics and Astronomy, McMaster University, 1280 Main Str West, ON L8S 4M1, Canada
| | - R Stern
- National Institute of Chemical Physics and Biophysics (NICPB), Akadeemia Tee 23, 12618 Tallinn, Estonia
| | - H Kühne
- Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany
| |
Collapse
|
34
|
Yang YC, Wu GC, Jin L, Wang KL, Bai ZG, Wang J, Zhang ZT. Association of thymidylate synthase polymorphisms with the tumor response to preoperative chemoradiotherapy in rectal cancer: a systematic review and meta-analysis. Pharmacogenomics J 2016; 17:265-273. [PMID: 27001118 DOI: 10.1038/tpj.2016.11] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 11/16/2015] [Accepted: 12/23/2015] [Indexed: 01/12/2023]
Abstract
Preoperative chemoradiotherapy (pCRT) followed by surgery is currently the standard therapy for patients with locally advanced rectal cancer. It is very important to develop biomarkers to prior identify the patients who have a higher likelihood of responding to pCRT. Recently, a series of studies have been conducted to investigate the association of thymidylate synthase (TYMS) polymorphisms with the tumor response to pCRT in rectal cancer, but the results were not consistent and conclusive. In the present study, we performed a systematic literature search for relevant studies up to 30 March 2015 and conducted a meta-analysis to summarize and clarify the association between the TYMS polymorphisms and the tumor response to pCRT in rectal cancer. Finally, 7 studies containing 892 cases for TYMS 2R/3R polymorphism, 7 studies involving 715 cases for TYMS 1494del6 polymorphism and 6 studies containing 616 cases for TYMS 5' untranslated region (UTR) expression allele polymorphism were analyzed in the meta-analysis. The results suggested that TYMS 2R/3R was associated with the response and the patients with 2R/2R or 2R/3R genotype with rectal cancer might benefit more from pCRT than others. On the contrary, neither 1494del6 nor 5'UTR expression allele polymorphisms was associated with the response to pCRT.
Collapse
Affiliation(s)
- Y C Yang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research &National Clinical Research Center of Digestive Diseases, Beijing, China
| | - G C Wu
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research &National Clinical Research Center of Digestive Diseases, Beijing, China
| | - L Jin
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research &National Clinical Research Center of Digestive Diseases, Beijing, China
| | - K L Wang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research &National Clinical Research Center of Digestive Diseases, Beijing, China
| | - Z G Bai
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research &National Clinical Research Center of Digestive Diseases, Beijing, China
| | - J Wang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research &National Clinical Research Center of Digestive Diseases, Beijing, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research &National Clinical Research Center of Digestive Diseases, Beijing, China
| |
Collapse
|
35
|
Zhu JG, Han W, Guo W, Su W, Bai ZG, Zhang ZT. Learning curve and outcome of laparoscopic transcystic common bile duct exploration for choledocholithiasis. Br J Surg 2015; 102:1691-7. [PMID: 26395452 DOI: 10.1002/bjs.9922] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 04/17/2015] [Accepted: 07/22/2015] [Indexed: 11/10/2022]
Abstract
BACKGROUND The best approach for cholecystocholedocholithiasis remains a matter of debate. The aim of this study was to evaluate the technical aspects, learning curve and outcome of laparoscopic transcystic common bile duct exploration (LTCBDE). METHODS Patients who underwent laparoscopic cholecystectomy with LTCBDE between January 2007 and December 2012 were identified from an institutional database. Data on preoperative investigations, intraoperative and postoperative findings were retrieved retrospectively from the patients' hospital notes. RESULTS There were 399 women (56·4 per cent) and 309 men (43·6 per cent), with a median age of 58 (range 18-87) years. Microincision (incision of the cystic duct at the confluence with the common bile duct (CBD) with extension of only 3-5 mm at the lateral margin of the CBD) and lithotripsy were used in the transcystic exploration in 119 patients, and increased the success rate of LTCBDE from 74·2 to 91·0 per cent. The median duration of operation was 85 (i.q.r. 65-120) min and the median postoperative hospital stay was 2 (1-3) days. Retained common bile duct stones were observed in 13 patients, and postoperative complications developed in 27 patients. The cumulative sum duration of operation learning curve comprised two phases; phase 1 included the first 250 patients and phase 2 the remaining 458 patients. Duration of operation and postoperative hospital stay decreased with increasing volume per surgeon. Recurrence of common bile duct stones was diagnosed in 26 patients during a median follow-up of 4 years. CONCLUSION LTCBDE with or without microincision and/or lithotripsy is a safe and effective approach.
Collapse
Affiliation(s)
- J G Zhu
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, and Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre of Digestive Diseases, Beijing, China
| | - W Han
- Department of General Surgery, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - W Guo
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, and Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre of Digestive Diseases, Beijing, China
| | - W Su
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Z G Bai
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, and Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre of Digestive Diseases, Beijing, China
| | - Z T Zhang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, and Beijing Key Laboratory of Cancer Invasion and Metastasis Research and National Clinical Research Centre of Digestive Diseases, Beijing, China
| |
Collapse
|
36
|
Lü WL, Wang N, Gao P, Li CY, Zhao HS, Zhang ZT. Effects of anodic titanium dioxide nanotubes of different diameters on macrophage secretion and expression of cytokines and chemokines. Cell Prolif 2014; 48:95-104. [PMID: 25521217 DOI: 10.1111/cpr.12149] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 08/21/2014] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVES To investigate effects of TiO2 nanotubes of different diameters on J744A.1 macrophage behaviour, secretion and expression of pro-inflammatory cytokines and chemokines. MATERIALS AND METHODS Macrophage-like J744A.1 cells were cultured on three types of Ti surface: mechanically polished titanium plus 30 and 80 nm TiO2 nanotube surfaces, for 4, 24 and 48 h. Macrophage adhesion and proliferation were assessed using CCK-8 assay. Levels of pro-inflammatory cytokines (TNF-α, IL-1β and IL-6) and chemokines (MCP-1 and MIP-1α) secreted into the supernatant were measured using the Cytometric Bead Arrays kit. TNF-α, MCP-1 and MIP-1α gene expression were quantitatively analysed by real-time PCR. RESULTS These show that TiO2 nanotube surfaces, especially of 80 nm TiO2 nanotube, benefited macrophage adhesion and proliferation, and reduced protein secretion and mRNA expression of TNF-α, MCP-1 and MIP-1α. IL-1β and IL-6 were undetectable on all the surfaces at all times. CONCLUSIONS TiO2 nanotube surfaces, especially of 80 nm TiO2 nanotube, reduced inflammatory response in vitro, which might be part of a basis for rapid osseointegration in implants with TiO2 nanotube surfaces in animal studies.
Collapse
Affiliation(s)
- W L Lü
- School of Stomatology, Capital Medical University, Beijing, 100050, China; Hospital and School of Stomatology, Tianjin Medical University, Tianjin, 300070, China
| | | | | | | | | | | |
Collapse
|
37
|
He XM, Fang MX, Zhang ZT, Hu YS, Jia XZ, He DL, Liang SD, Nie QH, Zhang XQ. Characterization of chicken natural resistance-associated macrophage protein encoding genes (Nramp1 and Nramp2) and association with salmonellosis resistance. Genet Mol Res 2013; 12:618-30. [PMID: 23408449 DOI: 10.4238/2013.january.30.5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Natural resistance-associated macrophage protein 1 and 2 encoding genes (Nramp1 and Nramp2) are related to many diseases. We cloned the cDNA of chicken Nramp1 and Nramp2 genes, characterized their expression and polymorphisms, and investigated the association of some SNPs with resistance to salmonellosis. The Nramp1 cDNA was 1746 bp long and the Nramp2 cDNA was 1938 bp long. These cDNAs are similar to previously reported cDNAs, varying by two and one amino acids, respectively. The chicken Nramp1 gene expressed predominantly in liver, thymus and spleen in both females and males. The Nramp2 gene expressed in almost all tissues, but predominantly in breast muscle, leg muscle, cerebrum, cerebellum, lung, kidney, and heart in both females and males. We identified 45 SNPs and 2 indels in the chicken Nramp1 gene; three of 13 SNPs in the exons were missense mutations (Arg223Gln, Ala273Glu and Arg497Gln). Association analysis indicated that A24101991G is significantly associated with chicken salmonellosis resistance. These results will be useful for functional investigation of chicken Nramp1 and Nramp2 genes.
Collapse
Affiliation(s)
- X M He
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science, South China Agricultural University, Guangzhou, Guangdong, China
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Zhang ZT, Yang ZR, Li L, Ling LS, Zhang CJ, Pi L, Zhang YH. Doping effects of Co and Cu on superconductivity and magnetism in Fe1+yTe0.6Se0.4 single crystals. J Phys Condens Matter 2013; 25:035702. [PMID: 23238220 DOI: 10.1088/0953-8984/25/3/035702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report on the investigation of Co and Cu substitution effects on superconductivity and magnetism in Fe(1+y)Te(0.6)Se(0.4) single crystals. The parent Fe(1.01)Te(0.59)Se(0.41) shows a nodeless bulk superconductivity as revealed in heat capacity measurement, which is gradually suppressed by either Co or Cu doping. It is found that the Co or Cu doping mainly serves as scatterers rather than charge carrier doping, which is in agreement with the DFT calculation (2010 Phys. Rev. Lett. 105 157004) reported by Wadati et al. In comparison with Cu doping, Co doping shows a stronger influence on magnetism while a less evident suppression effect on superconductivity. Upon substitution of Co for Fe, a Schottky heat capacity anomaly develops gradually at low temperatures, implying the existence of a paramagnetic moment in the Co-doped samples. In contrast, Cu doping may mainly serve as non-magnetic scatterers, where no Schottky anomaly is observed.
Collapse
Affiliation(s)
- Z T Zhang
- Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
39
|
Li BC, Li W, Chen H, Zhang Y, Zhang ZT, Wang XY, Gao B, Dou TC, Wang KH. The influencing factor of in vitro fertilization and embryonic transfer in the domestic fowl (Gallus domesticus). Reprod Domest Anim 2012; 48:368-72. [PMID: 22913565 DOI: 10.1111/j.1439-0531.2012.02158.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study was conducted to explore the influencing factors of ova in vitro fertilization (IVF) and transfer of the fertilized ova into the oviduct of recipient hens. The efficiency of fertilization was compared using three aspects: (i) the different time of ova collection and transfer, (ii) egg-laying period of recipient hen; and (iii) semen volume. The following results are observed: 72%, 40% and 0% of ova were found in ovarian sac in 30∼40 min, 50∼60 min and more than 90 min post-oviposition, respectively; 20%, 18%, 14% and 5.8% of ova were fertilized with 0.1, 0.2, 0.5 and 1.0 ml semen, respectively; and 33% and 100% of healthy chickens were hatched from fertile ova with 0.1 and 0.5 ml of semen, respectively. All oocytes obtained from ovary and mid-oviduct were unfertilized. Embryos were transferred into recipient hens 30 min ± 10 min post-oviposition, and 70% of shelled eggs were produced. There were no eggs produced in the other transfer times. This demonstrated that live chicken can be obtained by IVF of ova collected shortly after oviposition. It was important that the ovum was transferred into the oviduct infundibulum of recipient hens immediately or shortly after oviposition.
Collapse
Affiliation(s)
- B C Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Jiang ZM, Wilmore DW, Wang XR, Wei JM, Zhang ZT, Gu ZY, Wang S, Han SM, Jiang H, Yu K. Randomized clinical trial of intravenous soybean oil alone versus soybean oil plus fish oil emulsion after gastrointestinal cancer surgery. Br J Surg 2010; 97:804-9. [PMID: 20473991 DOI: 10.1002/bjs.6999] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Specific immunonutrients may reduce the incidence of postoperative complications and shorten recovery time. This randomized trial evaluated the clinical efficacy of a fish oil emulsion on outcome and immune function after gastrointestinal cancer surgery. METHODS A total of 206 patients with gastrointestinal or colonic cancer were randomized to receive isocaloric and isonitrogenous intravenous infusions of either soybean oil alone (1.2 g per kg bodyweight per day; control group, 103 analysed) or soybean plus fish oil emulsion (1.0 and 0.2 g per kg per day respectively; treatment group, 100 analysed) over 20-24 h daily for 7 days after surgery. RESULTS Baseline data were comparable in the two groups. There were fewer infectious complications (four versus 12 on day 8; P = 0.066), systemic inflammatory response syndrome (SIRS) was significantly less common (four versus 13; P = 0.039) and hospital stay was significantly shorter (mean(s.d.) 15(5) versus 17(8) days; P = 0.041) in the treatment group. Total postoperative medical costs were comparable in the two groups (mean(s.d.) US $ 1269(254) and 1302(324) in treatment and control groups respectively; P = 0.424). The median (interquartile range) difference in CD4/CD8 between days 1 and 8 after surgery was + 0.30 (0.06 to 0.79) in patients receiving fish oil and + 0.20 (-0.19 to 0.55) in controls (P = 0.021). No severe adverse events occurred in either group. CONCLUSION Fish oil emulsion-supplemented parenteral nutrition significantly reduced SIRS and length of hospital stay. These clinical benefits may be related to normalization of cellular immune functions and modulation of the inflammatory response.
Collapse
Affiliation(s)
- Z M Jiang
- Department of Surgery and Parenteral and Enteral Nutrition, and Centre for Parenteral and Enteral Nutrition, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Ren FL, Guo X, Zhang RJ, Wang SJ, Zuo H, Zhang ZT, Geng D, Yu Y, Su M. Effects of selenium and iodine deficiency on bone, cartilage growth plate and chondrocyte differentiation in two generations of rats. Osteoarthritis Cartilage 2007; 15:1171-7. [PMID: 17490897 DOI: 10.1016/j.joca.2007.03.013] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [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: 11/03/2006] [Accepted: 03/16/2007] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The purpose of the current study was to investigate the roles of combined selenium and iodine deficiency in bone development as a possible experimental model of Kashin-Beck osteoarthropathy. METHODS Sprague-Dawley rats (n=48) were randomly divided into selenium deficiency (-Se+I), iodine deficiency (+Se-I), combined selenium and iodine deficiency (-Se-I), and selenium and iodine sufficient (+Se+I) groups. Growth of bone and cartilage, and the expression of type X collagen (ColX) and parathyroid hormone-related peptide (PTHrP) were measured in two generations of rats (F(0) and F(1)). RESULTS The tibial length in -Se-I rats was significantly shorter in F(1) generation. In +Se-I of F(1) rats, the thickness of the growth plate cartilage, and the proliferative zone was smaller, while in -Se-I rats the growth plate, and the proliferative and hypertrophic zones were also thinner in F(1) generation. In articular cartilage, ColX expression was increased in the deep zone in -Se-I rats of F(0) generation, and in -Se+I, +Se-I and -Se-I rats of F(1) generation. PTHrP expression was increased in the middle zone of -Se+I, +Se-I and -Se-I rats of both F(0) and F(1) generations. In the growth plate cartilage, ColX and PTHrP were expressed in the hypertrophic zone. ColX expression was significantly weaker in -Se+I and -Se-I rats in both F(0) and F(1) generations, while PTHrP expression was stronger in -Se+I, +Se-I and -Se-I rats in both F(0) and F(1) animals. CONCLUSIONS Combined selenium and iodine deficiency impaired the growth of bone and cartilage. The changes in the expression of ColX and PTHrP induced by combined selenium and iodine deficiency were compatible to measurements of ColX and PTHrP in Kashin-Beck osteoarthropathy.
Collapse
Affiliation(s)
- F L Ren
- Department of Public Health, Xi'an Jiaotong University School of Medicine, Xi'an, Shannxi 710061, PR China
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Zhang ZT, Konduru M, Dai S, Overbury SH. Uniform formation of uranium oxide nanocrystals inside ordered mesoporous hosts and their potential applications as oxidative catalysts. Chem Commun (Camb) 2002:2406-7. [PMID: 12430463 DOI: 10.1039/b204987b] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly dispersed uranium oxide nanocrystals supported on ordered mesoporous silica matrixes with large surface areas and porosities have been synthesized via a co-assembly methodology; the preliminary catalysis tests showed that these materials have a high catalytic activity for the thermal oxidation of volatile organic compounds (VOCs).
Collapse
Affiliation(s)
- Z T Zhang
- Chemical Sciences Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, TN 37831, USA
| | | | | | | |
Collapse
|
43
|
Zhang ZT, Pak J, Huang HY, Shapiro E, Sun TT, Pellicer A, Wu XR. Role of Ha-ras activation in superficial papillary pathway of urothelial tumor formation. Oncogene 2001; 20:1973-80. [PMID: 11360181 DOI: 10.1038/sj.onc.1204315] [Citation(s) in RCA: 130] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2000] [Revised: 01/25/2001] [Accepted: 01/29/2001] [Indexed: 11/09/2022]
Abstract
Urothelial tumors develop along two distinctive phenotypic pathways (superficial papillary non-invasive tumors versus flat carcinoma in situ lesions), with markedly different biological behavior and prognosis. Although multiple genetic alterations have been identified in human bladder cancer, their cause-effect relationship with the two pathways has not been firmly established. Using a urothelium-specific promoter of the uroplakin II gene, we showed earlier in transgenic mice that the urothelial expression of SV40T antigen, which inactivates p53 and pRb, induced carcinoma in situ and invasive and metastatic bladder cancer. In striking contrast, we demonstrate here that the urothelial expression of an activated Ha-ras in transgenic mice caused urothelial hyperplasia and superficial papillary non-invasive bladder tumors. These results provide strong, direct experimental evidence that the two phenotypical pathways of bladder tumorigenesis are caused by distinctive genetic defects. Our results indicate that Ha-ras activation can induce urothelial proliferation in vivo; and that urothelial hyperplasia is a precursor of low-grade, superficial papillary bladder tumors. Our transgenic models provide unique opportunities to study the detailed molecular events underlying different types of bladder neoplasms, and can serve as useful preclinical models for evaluating the in vivo efficacy of preventive and therapeutic agents that act on various signaling pathways in bladder cancer.
Collapse
Affiliation(s)
- Z T Zhang
- Department of Urology, New York University School of Medicine, New York, NY 10016, USA
| | | | | | | | | | | | | |
Collapse
|
44
|
Pak J, Pu Y, Zhang ZT, Hasty DL, Wu XR. Tamm-Horsfall protein binds to type 1 fimbriated Escherichia coli and prevents E. coli from binding to uroplakin Ia and Ib receptors. J Biol Chem 2001; 276:9924-30. [PMID: 11134021 DOI: 10.1074/jbc.m008610200] [Citation(s) in RCA: 203] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The adherence of uropathogenic Escherichia coli to the urothelial surface, a critical first step in the pathogenesis of urinary tract infection (UTI), is controlled by three key elements: E. coli adhesins, host receptors, and host defense mechanisms. Although much has been learned about E. coli adhesins and their urothelial receptors, little is known about the role of host defense in the adherence process. Here we show that Tamm-Horsfall protein (THP) is the principal urinary protein that binds specifically to type 1 fimbriated E. coli, the main cause of UTI. The binding was highly specific and saturable and could be inhibited by d-mannose and abolished by endoglycosidase H treatment of THP, suggesting that the binding is mediated by the high-mannose moieties of THP. It is species-conserved, occurring in both human and mouse THPs. In addition, the binding to THP was much greater with an E. coli strain bearing a phenotypic variant of the type 1 fimbrial FimH adhesin characteristic of those prevalent in UTI isolates compared with the one prevalent in isolates from the large intestine of healthy individuals. Finally, a physiological concentration of THP completely abolished the binding of type 1 fimbriated E. coli to uroplakins Ia and Ib, two putative urothelial receptors for type 1 fimbriae. These results establish, on a functional level, that THP contains conserved high-mannose moieties capable of specific interaction with type 1 fimbriae and strongly suggest that this major urinary glycoprotein is a key urinary anti-adherence factor serving to prevent type 1 fimbriated E. coli from binding to the urothelial receptors.
Collapse
Affiliation(s)
- J Pak
- Veterans Affairs Medical Center, New York, New York 10010, USA
| | | | | | | | | |
Collapse
|
45
|
Li SM, Zhang ZT, Chan S, McLenan O, Dixon C, Taneja S, Lepor H, Sun TT, Wu XR. Detection of circulating uroplakin-positive cells in patients with transitional cell carcinoma of the bladder. J Urol 1999; 162:931-5. [PMID: 10458411 DOI: 10.1097/00005392-199909010-00093] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE Although transitional cell carcinoma of the bladder (TCC) metastasizes frequently with devastating consequences, no marker has been available to monitor this process. Uroplakins are a group of specific markers for normal urothelium and are continuously expressed by the majority of TCCs. Detection of uroplakin-positive cells in the circulation would be a strong indication of hematogenous dissemination of tumor cells in patients with TCC. MATERIALS AND METHODS Total RNAs were extracted from peripheral blood of 60 patients with TCC (50 non-metastatic and 10 metastatic) and 10 healthy controls, reverse-transcribed and subjected to polymerase chain reaction amplification (RT-PCR) using oligonucleotide primers of human uroplakin II gene. A uroplakin-expressing human bladder cancer cell line (RT4) was used as a positive control to establish the sensitivity of the RT-PCR assay. RESULTS We showed that the PCR-amplification of the mRNA encoding uroplakin II (UPII), a 15-kDa urothelium-specific marker, constitutes a highly sensitive and specific assay for detecting 100% of transitional cell carcinoma tissue, and that this assay can detect a single bladder cancer cell in a 5-ml. blood sample. UPII mRNA was detected in the blood samples of 2 patients with metastatic bladder cancer without chemotherapy and 1 out of 8 such patients with chemotherapy, but not in those of 50 non-metastatic patients or normal controls. CONCLUSIONS Uroplakin II is a highly specific marker for human TCC and the detection of uroplakin II in the peripheral blood is associated with metastatic spread of bladder cancer cells. The specific and sensitive detection of uroplakin II provides a useful adjunct for detecting bladder cancer metastasis, staging, and monitoring chemotherapeutic response.
Collapse
Affiliation(s)
- S M Li
- Department of Urology, Kaplan Comprehensive Cancer Center, New York University Medical School, and the Veteran Affairs Medical Center in Manhattan, New York 10016, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Zhang ZT, Pak J, Shapiro E, Sun TT, Wu XR. Urothelium-specific expression of an oncogene in transgenic mice induced the formation of carcinoma in situ and invasive transitional cell carcinoma. Cancer Res 1999; 59:3512-7. [PMID: 10416618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Although many genetic alterations are known to be associated with human transitional cell carcinoma (TCC) of the urinary bladder, relatively little is known about the roles of these molecular defects, singular or in combination, in bladder tumorigenesis. We have developed a transgenic mouse model of bladder tumorigenesis using a 3.6-kb promoter of uroplakin II gene to drive the urotheliums-specific expression of oncogenes. In this study, we demonstrate that transgenic mice bearing a low copy number of SV40T transgene developed bladder carcinoma in situ (CIS), whereas those bearing high copies developed CIS as well as invasive and metastatic TCCs. These results indicate that the SV40T inactivation of p53 and retinoblastoma gene products, defects frequently found in human bladder CIS and invasive TCCs, can cause the aggressive form of TCC. Our results also provide experimental proof that CIS is a precursor of invasive TCCs, thus supporting the concept of two distinct pathways of bladder tumorigenesis (papillary versus CIS/invasive TCC). This transgenic system can be used for the systematic dissection of the roles of individual or combinations of specific molecular events in bladder tumorigenesis.
Collapse
MESH Headings
- Animals
- Antigens, Polyomavirus Transforming/biosynthesis
- Antigens, Polyomavirus Transforming/genetics
- Carcinoma in Situ/genetics
- Carcinoma in Situ/pathology
- Carcinoma, Papillary/genetics
- Carcinoma, Transitional Cell/genetics
- Carcinoma, Transitional Cell/pathology
- Cell Transformation, Neoplastic/genetics
- Cell Transformation, Viral/genetics
- Gene Expression Regulation, Neoplastic
- Genes, Retinoblastoma
- Genes, p53
- Humans
- Membrane Proteins/genetics
- Mice
- Mice, Transgenic
- Neoplasm Invasiveness
- Neoplasm Metastasis
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Oncogenes
- Organ Specificity
- Promoter Regions, Genetic
- Recombinant Fusion Proteins/biosynthesis
- Simian virus 40/genetics
- Transgenes
- Urinary Bladder Neoplasms/genetics
- Urinary Bladder Neoplasms/pathology
- Uroplakin II
- Urothelium/metabolism
Collapse
Affiliation(s)
- Z T Zhang
- Department of Urology, Kaplan Comprehensive Cancer Center, New York University School of Medicine, New York 10016, USA
| | | | | | | | | |
Collapse
|
47
|
Zahler R, Zhang ZT, Manor M, Boron WF. Sodium kinetics of Na,K-ATPase alpha isoforms in intact transfected HeLa cells. J Gen Physiol 1997; 110:201-13. [PMID: 9236212 PMCID: PMC2233788 DOI: 10.1085/jgp.110.2.201] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.6] [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] [Subscribe] [Scholar Register] [Received: 01/30/1997] [Accepted: 05/09/1997] [Indexed: 02/04/2023] Open
Abstract
By participating in the regulation of ion and voltage gradients, the Na-K pump (i.e., Na,K-ATPase) influences many aspects of cellular physiology. Of the four alpha isoforms of the pump, alpha1 is ubiquitous, alpha2 is predominant in skeletal muscle, and alpha3 is found in neurons and the cardiac conduction system. To determine whether the isoforms have different intracellular Na+ affinities, we used the Na+-sensitive dye sodium-binding benzofuran isophthalate (SBFI) to measure pump-mediated Na+ efflux as a function of [Na+]i in human HeLa cells stably transfected with rat Na-K pump isoforms. We Na+-loaded the cells, and then monitored the time course of the decrease in [Na+]i after removing external Na+. All transfected rat alpha subunits were highly ouabain resistant: the alpha1 isoform is naturally resistant, whereas the alpha2 and alpha3 isoforms had been mutagenized to render them resistant. Thus, the Na+ efflux mediated by endogenous and transfected pumps could be separated by studying the cells at low (1 microM) and high (4 mM) ouabain concentrations. We found that the apparent Km for Na+ efflux attributable to the native human alpha1 isoform was 12 mM, which was similar to the Km of rat alpha1. The alpha2 and alpha3 isoforms had apparent Km's of 22 and 33 mM, respectively. The cells expressing alpha3 had a high resting [Na+]i. The maximal activity of native alpha1 in the alpha3-transfected cells was only approximately 56% of native alpha1 activity in untransfected HeLa cells, suggesting that transfection with alpha3 led to a compensatory decrease in endogenous alpha1 pumps. We conclude that the apparent Km(Na+) for rat Na-K pump isoforms increases in the sequence alpha1 < alpha2 < alpha3. The alpha3 isoform may be suited for handling large Na+ loads in electrically active cells.
Collapse
Affiliation(s)
- R Zahler
- Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut 06510, USA.
| | | | | | | |
Collapse
|
48
|
Zahler R, Sun W, Ardito T, Zhang ZT, Kocsis JD, Kashgarian M. The alpha3 isoform protein of the Na+, K(+)-ATPase is associated with the sites of cardiac and neuromuscular impulse transmission. Circ Res 1996; 78:870-9. [PMID: 8620608 DOI: 10.1161/01.res.78.5.870] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The alpha (catalytic) subunit of the Na+ pump (Na+, K(+)-ATPase) has three isoforms; alpha1 is ubiquitous, skeletal muscle expresses predominantly alpha2, and alpha3 has been localized to specific types of neurons and, possibly, to axonal processes. The alpha3 isoform mRNA is also expressed in the rat cardiac conduction system. Thus, we studied rat heart and quadriceps muscles by immunohistochemistry using isoform-specific antibodies to the Na+ pump alpha subunit and labeled alpha-bungarotoxin as a probe for the neuromuscular junction (NMJ). We found that alpha3 pump protein is localized to three sites important for impulse transmission: the junctional complex between cardiac myocytes, the heart conduction system, and the NMJ. Specifically, all levels of the conduction system expressed alpha3 immunoreactive protein, as assessed by two isoform-specific antibodies and histological conduction system markers. Specific expression at the junctional complex was confirmed by immuno-EM. Double-labeling and denervation analysis indicated that alpha3-positive areas in skeletal muscle were presynaptic and adjacent to postsynaptic bungarotoxin-positive regions, which had the classic morphology of NMJs. Thus, specific Na+,K(+)-ATPase pump isoforms may be adapted to maintenance of membrane potential and/or intracellular ion concentrations required for impulse transmission in both heart and presynaptic motor terminals contacting skeletal muscle.
Collapse
Affiliation(s)
- R Zahler
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06510, USA
| | | | | | | | | | | |
Collapse
|
49
|
Abstract
A survey of the prevalence of smoking in middle school students aged 13-21 years in Harbin city, China, was undertaken in the Spring of 1988. A random sample of 4712 students was selected using proportional stratified clustering. A self-administered confidential questionnaire relating to smoking habits and certain family and school factors was administered. The results showed that 1.29% of the students (2.21% boys and 0.38% girls) smoked regularly, 5.62% (10.52% boys and 0.76% girls) were light smokers and 13.77% (24.29% boys and 2.92% girls) smoked only occasionally. Smoking habits were related to the type of school and to age, there being a higher proportion of smoking in senior grade students. Students were significantly more likely to smoke if they were male and if their siblings smoked. Prevalence of regular smoking was not related to parental occupation or family income. It is suggested that anti-smoking education in the school curriculum should be directed towards students in middle school.
Collapse
Affiliation(s)
- J F Hu
- Department of Epidemiology, Harbin Medical College
| | | | | | | | | | | | | | | |
Collapse
|