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You R, Liu YP, Chen XZ, Chen JH, Chan JYW, Fang JG, Hu CS, Han YQ, Han F, Hu GY, Jiang Y, Jiang WH, Kong L, Li JG, Lin Q, Liu Y, Liu YH, Lu YT, Ng WT, Man PK, Sun JW, Tao L, Yi JL, Zhu XD, Wen WP, Chen MY, Han DM. Surgical treatment of nasopharyngeal cancer - a consensus recommendation from two Chinese associations. Rhinology 2024; 62:23-34. [PMID: 37902657 DOI: 10.4193/rhin23.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
BACKGROUND Surgical treatment is playing an increasingly important role in the management of nasopharyngeal carcinoma (NPC). This consensus focuses on the indications for optimal surgery, and surgical methods in the whole process of treatment for NPC to provide a useful reference to assist these difficult clinical decisions. METHODOLOGY A thorough review of available literature on NPC and surgery was conducted by the Association for the prevention and treatment of nasopharyngeal carcinoma in China, international exchange and promotion Association for medicine and healthcare, and the Committee on nasopharyngeal cancer of Guangdong provincial anticancer association. A set of questions and a preliminary draft guideline was circulated to a panel of 1096 experienced specialists on this disease for voting on controversial areas and comments. A refined second proposal, based on a summary of the initial voting and different opinions expressed, was recirculated to the experts in two authoritative medical science and technology academic groups in the prevention and treatment of NPC in China for review and reconsideration. RESULTS The initial round of questions showed variations in clinical practice even among similar specialists, reflecting the lack of high-quality supporting data and resulting difficulties in formulating clinical decisions. Through exchange of comments and iterative revisions, recommendations with high-to-moderate agreement were formulated on general treatment strategies and details of surgery, including indications and surgical approaches. CONCLUSION By standardizing the surgical indications and practice, we hope not only to improve the surgical outcomes, but also to highlight the key directions of future clinical research in the surgical management of NPC.
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Affiliation(s)
- R You
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P. R. China; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P. R. China
| | - Y P Liu
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P. R. China; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P. R. China
| | - X Z Chen
- Department of Radiation Oncology, Zhejiang Cancer Hospital, Zhejiang Province Key Laboratory of Radiation Oncology, Hangzhou, P. R. China
| | - J H Chen
- Department of Neurosurgery, Third Affiliated Hospital of Southern Medical University, Guangzhou, P. R. China
| | - J Y W Chan
- Department of Surgery, LKS Faculty of Medicine, The University of Hong, Hong Kong, P. R. China
| | - J G Fang
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, P. R. China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, P. R. China
| | - C S Hu
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, P. R. China
| | - Y Q Han
- Department of Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, P. R. China
| | - F Han
- Department of Radiation Oncology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, P. R. China
| | - G Y Hu
- Department of Oncology, Tongji Hospital, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Y Jiang
- Department of Otolaryngology Head and Neck Surgery, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, P. R. China
| | - W H Jiang
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - L Kong
- Department of Radiation Oncology, Shanghai Proton and Heavy Ion Center, Fudan University Cancer Hospital, Shanghai, P. R. China
| | - J G Li
- Department of Radiation Oncology, Jiangxi Cancer Hospital of Nanchang University, Nanchang, Jiangxi, P. R. China
| | - Q Lin
- Department of Radiation Oncology, The First Affiliated Hospital of Xiamen University, Xiamen, P. R. China
| | - Y Liu
- Department of Otolaryngology Head and Neck Surgery, Xiangya Hospital, Central South University, Changsha, Hunan, P. R. China
| | - Y H Liu
- Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Nanchang University, Nanchang, P. R. China
| | - Y T Lu
- Department of Otorhinolaryngology, Shenzhen Second People's Hospital/The First Affiliated Hospital of Shenzhen University, Shenzhen, P. R. China
| | - W T Ng
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region, P. R. China
| | - P K Man
- Department of Otorhinolaryngology, Centro Hospitalar C.S. Januario Macau, Macau, P. R. China
| | - J W Sun
- Department of Otorhinolaryngology-Head and Neck Surgery, The First Affiliated Hospital, University of Science and Technology of China, Hefei, P. R. China
| | - L Tao
- ENT Institute and Department of Otorhinolaryngology, Eye and ENT Hospital, Fudan University, Shanghai, P. R. China
| | - J L Yi
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, P. R. China
| | - X D Zhu
- Department of Radiation Oncology, The Affiliated Tumor Hospital of Guangxi Medical University, Guangxi, P.R. China
| | - W P Wen
- Department of Otolaryngology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - M Y Chen
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou, P. R. China; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, P. R. China; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou, P. R. China
| | - D M Han
- Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, P. R. China; Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, P. R. China
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Chen XZ, Hogan JA, Wang CP, Wang PL, Lin TC. Responses of a common tropical epiphyte, Asplenium nidus, to changes in water and nutrient availability. AoB Plants 2023; 15:plad076. [PMID: 38046406 PMCID: PMC10689150 DOI: 10.1093/aobpla/plad076] [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] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 11/08/2023] [Indexed: 12/05/2023]
Abstract
Epiphytes are highly dependent on atmospheric inputs of water and nutrients. Reductions in water availability associated with warming and climate change and continual atmospheric nitrogen (N) deposition can affect plant growth but few studies have evaluated the effects of changes in both water and nutrient availabilities on epiphytes. We experimentally tested whether epiphyte growth is more water- or nutrient-limited, if nutrient limitation was stronger for nitrogen or phosphorus, and whether nutrient limitation interacts with water availability. We applied watering (high and low) and nutrient addition (control, +N, +P, +N+P) treatments to greenhouse-grown Asplenium nidus, a common epiphytic fern found in many tropical and subtropical wet forests. We measured leaf area production and leaf elemental concentrations to assess how A. nidus growth and physiology respond to changes in water and nutrient availabilities. We found that leaf growth of A. nidus was more affected by water availability than nutrient addition and the effect of adding nutrients was not fully realized under low-water availability. Among the different nutrient treatments, +N+P had the greatest effects on A. nidus growth and physiology in both watering treatments. Watering treatment changed leaf elemental concentrations but not their ratios (i.e. C:N and N:P). Nutrient addition altered C:N and N:P ratios and increased the concentration of the added elements in leaves, with more pronounced increases in the high-watering treatment. We conclude that the growth of A. nidus is more water- than nutrient-limited. When nutrient limitation occurs (i.e. under high-water availability), nutrient co-limitation is stronger than limitation by N or P alone. This result taken together with studies of other epiphytes suggests greater water than nutrient limitation is likely widespread among epiphytic plants. The limited effects of nutrient addition in the low-water treatment suggest that the effect of atmospheric N deposition on epiphyte growth will be limited when water availability is low.
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Affiliation(s)
- Xiao-Zhen Chen
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan
| | - J Aaron Hogan
- Department of Biology, University of Florida, Gainesville, FL 32611, USA
| | - Chiao-Ping Wang
- Silviculture Division, Taiwan Forestry Research Institute, Taipei 10066, Taiwan
| | - Pei-Ling Wang
- Institute of Oceanography, National Taiwan University, Taipei 10617, Taiwan
| | - Teng-Chiu Lin
- Department of Life Science, National Taiwan Normal University, Taipei 11677, Taiwan
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Huang Y, Zhou WW, Li YX, Chen XZ, Gui C. The use of D-dimer in the diagnosis and risk assessment of intracardiac thrombus among patients with dilated cardiomyopathy. Sci Rep 2023; 13:18075. [PMID: 37872215 PMCID: PMC10593857 DOI: 10.1038/s41598-023-45077-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 10/16/2023] [Indexed: 10/25/2023] Open
Abstract
D-dimer is a biomarker of coagulation and fibrinolytic system activation in response to the body's hypercoagulable state. The study aims to investigate the usefulness of D-dimer in diagnosing and assessing the risk of intracardiac thrombus in patients with dilated cardiomyopathy (DCM). Consecutively enrolled in this study were patients with DCM who were admitted to our center for the first time. The diagnostic value was evaluated using the receiver operating characteristic (ROC) curve. Additionally, we used univariate and multivariate logistic regression to investigate the association between D-dimer and intracardiac thrombus. We also performed smooth curve fitting, threshold saturation effect analysis, and subgroup analysis. In total, 534 patients were enrolled in the study, and among them, 65 patients had intracardiac thrombus. Mural thrombus was the predominant type of thrombus, which was mainly located in the left ventricular apex. The optimal cut-off value of D-dimer for the diagnosis of intracardiac thrombus was 484 ng/mL, with a sensitivity and specificity of 0.769 and 0.646, respectively. In both unadjusted and adjusted logistic regression models, a positive association was found between D-dimer and intracardiac thrombus. Curve fitting and threshold effect analysis revealed two inflection points in the relationship between D-dimer and intracardiac thrombus (non-linear test: P = 0.032). When D-dimer was equal to 362 ng/mL, the odds ratio (OR) was 1, and the risk of thrombus gradually increased until it reached 4096 ng/mL, after which the trend no longer increased. Within this range, a twofold increase in D-dimer was associated with a 103.2% increased risk (OR = 2.032; 95% CI 1.293-3.193; P < 0.01). In the subgroup analysis, there was a significant interaction between D-dimer and BMI on intracardiac thrombus (P value for interaction was 0.013), and the risk was higher in patients with a BMI ≥ 25 kg/m2 (OR = 3.44; 95% CI 1.86-6.36; P < 0.01).
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Affiliation(s)
- Yuan Huang
- Department of Cardiology, Jiangbin Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Wang-Wei Zhou
- Department of Cardiology, Liuzhou People's Hospital, Liuzhou, Guangxi, China
| | - Yu-Xin Li
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, No 6, Shuangyong Road, Nanning, 530021, Guangxi, China
- Guangxi Key Laboratory Base of Precision Medicine in Cardio-Cerebrovascular Diseases Control and Prevention, Nanning, China
- Guangxi Clinical Research Center for Cardio-Cerebrovascular Diseases, Nanning, China
| | - Xiao-Zhen Chen
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, No 6, Shuangyong Road, Nanning, 530021, Guangxi, China
- Guangxi Key Laboratory Base of Precision Medicine in Cardio-Cerebrovascular Diseases Control and Prevention, Nanning, China
- Guangxi Clinical Research Center for Cardio-Cerebrovascular Diseases, Nanning, China
| | - Chun Gui
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, No 6, Shuangyong Road, Nanning, 530021, Guangxi, China.
- Guangxi Key Laboratory Base of Precision Medicine in Cardio-Cerebrovascular Diseases Control and Prevention, Nanning, China.
- Guangxi Clinical Research Center for Cardio-Cerebrovascular Diseases, Nanning, China.
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Wang HY, Huang Y, Chen XZ, Zhang ZL, Gui C. Prognostic potential of liver injury in patients with dilated cardiomyopathy: a retrospective study. Eur J Med Res 2022; 27:237. [PMID: 36348400 PMCID: PMC9641949 DOI: 10.1186/s40001-022-00876-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/23/2022] [Indexed: 11/11/2022] Open
Abstract
Background Liver injury (LI) has been frequently observed in patients with dilated cardiomyopathy (DCM), whereas its prognostic value remains blurry. We attempted to appraise the prognostic effect of LI in patients with DCM. Methods This retrospective study included 523 patients with DCM. LI was defined as a threefold increase in aspartate transaminase (≥ 135 U/L) or alanine transaminase (≥ 180 U/L) or a twofold increase in total bilirubin (≥ 41 umol/L) during hospitalization. The population was segmented into non-liver injury (NLI) group and LI group based on liver function test data. To balance differences in covariates at baseline, 1:1 propensity score matching (PSM) was performed. Results Patients with LI had lower survival rate, compared with those with NLI (44.6% vs. 73.8%, P < 0.001). Similar results were also found in age (age > 50, 39.6% vs. 70.9%, P < 0.001; age ≤ 50, 51.3% vs. 79.5%, P < 0.001) and gender stratified analysis (male, 46.2% vs. 74.4%, P < 0.001; female 35.7% vs. 72.0%, P = 0.001). After PSM, the survival rate of patients with LI remained lower than those with NLI (44.6% vs. 64.1%, P = 0.019). Multivariable Cox regression analysis manifested that LI (hazard ratio [HR]: 1.692, 95% confidence interval [CI] 1.194–2.398, P = 0.003; HR: 1.675, 95% CI 1.078–2.604, P = 0.022, respectively) showed potent predictive effect on all-cause mortality in patients with DCM, both before and after PSM. Conclusions The occurrence of LI herald adverse outcomes in patients with DCM and attention to LI may be conducive to risk stratification and management. Supplementary Information The online version contains supplementary material available at 10.1186/s40001-022-00876-9.
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Tang KN, Chen XL, Zhang WH, Yang K, Liu K, Jiang W, Chen XZ, Hu JK. [Comparison of postoperative mid-term and long-term quality of life between Billroth-I gastroduodenostomy and Billroth-II gastrojejunostomy after radical distal gastrectomy in patients with gastric cancer: a cohort study based on a case registry database]. Zhonghua Wei Chang Wai Ke Za Zhi 2022; 25:401-411. [PMID: 35599395 DOI: 10.3760/cma.j.cn441530-20220304-00081] [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: The pattern of digestive tract reconstruction in radical gastrectomy for gastric cancer is still inconclusive. This study aims to compare mid-term and long-term quality of life after radical gastrectomy for distal gastric cancer between Billroth-I (B-I) and Billroth-II (B-II) reconstruction. Methods: A retrospective cohort study was conducted.Clinicopathological and follow-up data of 859 gastric cancer patients were colected cellected from the surgical case registry database of Gastrointestinal Surgery Center of Sichuan University West China Hospital, who underwent radical distal gastric cancer resection between January 2016 and December 2020. Inclusion criteria: (1) gastric cancer confirmed by preoperative gastroscopy and biopsy; (2) elective radical distal major gastrectomy performed according to the Japanese Society for Gastric Cancer treatment guidelines for gastric cancer; (3) TNM staging referenced to the American Cancer Society 8th edition criteria and exclusion of patients with stage IV by postoperative pathology; (4) combined organ resection only involving the gallbladder or appendix; (5) gastrointestinal tract reconstruction modality of B-I or B-II; (6) complete clinicopathological data; (7) survivor during the last follow-up period from December 15, 2021 to January 15, 2022. Exclusion criteria: (1) poor compliance to follow-up; (2) incomplete information on questionnaire evaluation; (3) survivors with tumors; (4) concurrent malignancies in other systems; (5) concurrent psychiatric and neurological disorders that seriously affected the objectivity of the questionnaire or interfered with patient's cognition. Telephone follow-up was conducted by a single investigator from December 2021 to January 2022, and the standardized questionnaire EORTC QLQ-C30 scale (symptom domains, functional domains and general health status) and EORTC QLQ-STO22 scale (5 symptoms of dysphagia, pain, reflux, restricted eating, anxiety; 4 single items of dry mouth, taste, body image, hair loss) were applied to evaluate postoperative quality of life. In 859 patients, 271 were females and 588 were males; the median age was 57.0 (49.5, 66.0) years. The included cases were divided into the postoperative follow-up first year group (202 cases), the second year group (236 cases), the third year group (148 cases), the fourth year group (129 cases) and the fifth year group (144 cases) according to the number of years of postoperative follow-up. Each group was then divided into B-I reconstruction group and B-II reconstruction group according to procedure of digestive tract reconstruction. Except for T-stage in the fourth year group, and age, tumor T-stage and tumor TNM-stage in the fifth year group, whose differences were statistically significant between the B-I and B-II reconstruction groups (all P<0.05), the differences between the B-I and B-II reconstruction groups in terms of demographics, body mass index (BMI), tumor TNM-stage and tumor pathological grading in postoperative follow-up each year group were not statistically significant (all P>0.05), suggesting that the baseline information between B-I reconstruction group and the B-II reconstruction group in postoperative each year group was comparable. Evaluation indicators of quality of life (EORTC QLQ-C30 and EORTC QLQ-STO22 scales) and nutrition-related laboratory tests (serum hemoglobin, albumin, total protein, triglycerides) between the B-I reconstruction group and B-II reconstruction group in each year group were compared. Non-normally distributed continuous variables were presented as median (Q(1),Q(3)), and compared by using the Wilcoxon rank sum test (paired=False). The χ(2) test or Fisher's exact test was used for comparison of categorical variables between groups. Results: There were no statistically significant differences in all indexes EORTC QLQ-30 scale between the B-I reconstruction group and the B-II reconstruction group among all postoperative follow-up year groups (all P>0.05). The EORTC QLQ-STO22 scale showed that significant differences in pain and eating scores between the B-I reconstruction group and the B-II reconstruction group were found in the second year group, and significant differences in eating, body and hair loss scores between the B-I reconstruction group and the B-II reconstruction group were found in the third year group (all P<0.05), while no significant differences of other item scores between the B-I reconstruction group and the B-II reconstruction group were found in postoperative follow-up of all year groups (P>0.05). Triglyceride level was higher in the B-II reconstruction group than that in the B-I reconstruction group (W=2 060.5, P=0.038), and the proportion of patients with hyperlipidemia (triglycerides >1.85 mmol/L) was also higher in the B-II reconstruction group (19/168, 11.3%) than that in the B-I reconstruction group (0/34) (χ(2)=0.047, P=0.030) in the first year group with significant difference. Albumin level was lower in the B-II reconstruction group than that in the B-I reconstruction group (W=482.5, P=0.036), and the proportion of patients with hypoproteinemia (albumin <40 g/L) was also higher in the B-II reconstruction group (19/125, 15.2%) than that in the B-I reconstruction group (0/19) in the fifth year group, but the difference was not statistically significant (χ(2)=0.341, P=0.164). Other nutrition-related clinical laboratory tests were not statistically different between the B-I reconstruction and the B-II reconstruction in each year group (all P>0.05). Conclusions: The effects of both B-I and B-II reconstruction methods on postoperative mid-term and long-term quality of life are comparable. The choice of reconstruction method after radical resection of distal gastric cancer can be based on a combination of patients' condition, sugenos' eoperience and operational convenience.
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Affiliation(s)
- K N Tang
- Department of Gastrointestinal Surgery and Gastric Cancer Laboratory, West China Hospital, Sichuan University, Chengdu 610041, China University of Electronic Science and Technology of China Hospital, Chengdu 611731, China
| | - X L Chen
- Department of Gastrointestinal Surgery and Gastric Cancer Laboratory, West China Hospital, Sichuan University, Chengdu 610041, China
| | - W H Zhang
- Department of Gastrointestinal Surgery and Gastric Cancer Laboratory, West China Hospital, Sichuan University, Chengdu 610041, China
| | - K Yang
- Department of Gastrointestinal Surgery and Gastric Cancer Laboratory, West China Hospital, Sichuan University, Chengdu 610041, China
| | - K Liu
- Department of Gastrointestinal Surgery and Gastric Cancer Laboratory, West China Hospital, Sichuan University, Chengdu 610041, China
| | - W Jiang
- University of Electronic Science and Technology of China Hospital, Chengdu 611731, China
| | - X Z Chen
- Department of Gastrointestinal Surgery and Gastric Cancer Laboratory, West China Hospital, Sichuan University, Chengdu 610041, China The Second People's hospital of Yibin, Yibin 644000, China
| | - J K Hu
- Department of Gastrointestinal Surgery and Gastric Cancer Laboratory, West China Hospital, Sichuan University, Chengdu 610041, China
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Bai H, Han L, Feng XY, Zhou YJ, Su RX, Wang Q, Liao LY, Zhu WX, Chen XZ, Pan F, Fan XL, Song C. Observation of Spin Splitting Torque in a Collinear Antiferromagnet RuO_{2}. Phys Rev Lett 2022; 128:197202. [PMID: 35622053 DOI: 10.1103/physrevlett.128.197202] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 02/22/2022] [Accepted: 04/15/2022] [Indexed: 06/15/2023]
Abstract
Current-induced spin torques provide efficient data writing approaches for magnetic memories. Recently, the spin splitting torque (SST) was theoretically predicted, which combines advantages of conventional spin transfer torque (STT) and spin-orbit torque (SOT) as well as enables controllable spin polarization. Here we provide the experimental evidence of SST in collinear antiferromagnet RuO_{2} films. The spin current direction is found to be correlated to the crystal orientation of RuO_{2} and the spin polarization direction is dependent on (parallel to) the Néel vector. These features are quite characteristic for the predicted SST. Our finding not only presents a new member for the spin torques besides traditional STT and SOT, but also proposes a promising spin source RuO_{2} for spintronics.
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Affiliation(s)
- H Bai
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - L Han
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - X Y Feng
- The Key Lab for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China
| | - Y J Zhou
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - R X Su
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Q Wang
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - L Y Liao
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - W X Zhu
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - X Z Chen
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - F Pan
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - X L Fan
- The Key Lab for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, Lanzhou 730000, China
| | - C Song
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
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Ding XL, Su YG, Yu L, Bai ZL, Bai XH, Chen XZ, Yang X, Zhao R, He JX, Wang YY. Clinical characteristics and patient outcomes of molecular subtypes of small cell lung cancer (SCLC). World J Surg Oncol 2022; 20:54. [PMID: 35220975 PMCID: PMC8883717 DOI: 10.1186/s12957-022-02528-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 02/14/2022] [Indexed: 12/22/2022] Open
Abstract
Abstract
Background
Recent studies have shown that according to the expression levels of achaete-scute homolog 1 (ASCL1), neurogenic differentiation factor 1 (NEUROD1), and POU class 2 homeobox 3 (POU2F3), small cell lung cancer (SCLC) can be divided into four subtypes: SCLC-A (ASCL1-dominant), SCLC-N (NEUROD1-dominant), SCLC-P (POU2F3-dominant), and SCLC-I (triple negative or SCLC-inflamed). However, there are limited data on the clinical characteristics and prognosis of molecular subtypes of SCLC.
Methods
Immunohistochemistry (IHC) was used to detect the expression levels of ASCL1, NEUROD1, and POU2F3 in 53 patient samples of resectable SCLC. The subtype was defined by the differential expression of the transcription factors for ASCL1, NEUROD1, and POU2F3 or the low expression of all three factors with an inflamed gene signature (SCLC-A, SCLC-N, SCLC-P, and SCLC-I, respectively). The clinicopathological characteristics, immunological features (programmed death ligand 1 [PD-L1] expression and CD8+ tumor infiltrating lymphocyte [TIL] density), and patient outcomes of the four subtypes of SCLC were analyzed.
Results
Positive ASCL1, NEUROD1, and POU2F3 staining was detected in 43 (79.2%), 27 (51.0%), and 17 (32.1%) SCLC specimens by IHC. According to the results of IHC analysis, SCLC was divided into four subtypes: SCLC-A (39.6%), SCLC-N (28.3%), SCLC-P (17.0%), and SCLC-I (15.1%). The 5-year overall survival (OS) rates of these four subtypes were 61.9%, 69.3%, 41.7%, and 85.7%, respectively (P=0.251). There were significant differences in smoking status among different subtypes of SCLC (P= 0.031). However, we did not confirm the correlation between subtypes of SCLC and other clinicopathological factors or immune profiles. Cox multivariate analysis showed that N stage (P=0.025), CD8+ TILs (P=0.024), Ki-67 level (P=0.040), and SCLC-P (P=0.023) were independent prognostic factors for resectable SCLC.
Conclusions
Our IHC-based study validated the proposed classification of SCLC using the expression patterns of key transcriptional regulatory factors. We found that SCLC-P was associated with smokers and was one of the poor prognostic factors of limited-stage SCLC. In addition, no correlation was found between PD-L1 expression or CD8+ TIL density and SCLC subtypes.
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Fang MY, Chen LP, Huang L, Fang DM, Chen XZ, Wang BQ, Feng C, Xiang SK. Synthesis of Tribenzo[ b, d, f]azepines via Palladium-Catalyzed Annulation Reaction of 2-Iodobiphenyls with 2-Halogenoanilines. J Org Chem 2021; 86:9096-9106. [PMID: 34128663 DOI: 10.1021/acs.joc.1c01082] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A palladium-catalyzed annulation reaction of 2-iodobiphenyls with 2-halogenoanilines has been developed. A variety of 2-iodobiphenyls and 2-halogenoanilines can undergo this transformation. Diversified tribenzo[b,d,f]azepine derivatives can be synthesized in moderate to excellent yields according to this method.
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Affiliation(s)
- Mao-Ying Fang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, P. R. China
| | - Li-Ping Chen
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, P. R. China
| | - Lin Huang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, P. R. China
| | - Dong-Mei Fang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, P. R. China
| | - Xiao-Zhen Chen
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, P. R. China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, P. R. China
| | - Chun Feng
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, P. R. China
| | - Shi-Kai Xiang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610068, P. R. China
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9
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Cai LJ, Wang MF, Wang XL, Zhu HF, Chen XZ. Effects of sDR5-Fc fusion protein on infant mice with ulcerative colitis via the TRAIL-DR5 pathway. J BIOL REG HOMEOS AG 2020; 34:525-533. [PMID: 32425017 DOI: 10.23812/19-373-a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
To explore effects of the sDR5-Fc fusion protein on ulcerative colitis of infant mice via the TRAIL-DR5 pathway, 50 female mice were randomly divided into 5 groups, i.e., control group (group A), dextran sulfate sodium group (group B), hIgG group (group C), 10 mg/kg sDR5-Fc group (group D), and 20 mg/ kg sDR5-Fc group (group E). The acute ulcerative colitis models were established. The weights and disease activity index (DAI) of each group were monitored daily. In addition, the pathological changes of colon tissues were observed by Hematoxylin-Eosin staining. The number of macrophages in colon tissues was detected by immunohistochemistry assay. Changes in the expression of inflammatory factors in colon tissues were detected by quantitative real-time polymerase chain reaction (PCR). Lipopolysaccharide (LPS) of different concentrations was utilized alone or in combination with TRAIL to stimulate the NCM460 cells. The activation of NLRP3 inflammasomes was detected by Western blot. The apoptosis of NCM460 cells was detected by flow cytometry. The results showed that in groups B and C, the body weights decreased, the DAI increased, the colon epithelial cells were injured, the inflammatory cells were infiltrated, and the macrophages in colon tissues increased significantly. In groups D and E, the body weights increased, the DAI decreased, the inflammation was significantly improved, the macrophages decreased significantly, and the gene expression levels of NLRP3, Caspase-1, and IL-1β decreased significantly. Thus, sDR5-Fc could inhibit the activation of NLRP3 inflammasomes induced by TRAIL, thereby decreasing the apoptosis of NCM460 cells. In conclusion, the sDR5-Fc fusion protein could block the TRAIL-DR5 pathway to reduce the expression of NLRP3 inflammasomes, thereby improving ulcerative colitis.
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Affiliation(s)
- L J Cai
- Department of Pediatric Gastroenterology, Hubei Maternal and Child Health Hospital, Wuhan, Hubei Province, China
| | - M F Wang
- Department of Pediatric Gastroenterology, Hubei Maternal and Child Health Hospital, Wuhan, Hubei Province, China
| | - X L Wang
- Department of Pediatric Gastroenterology, Hubei Maternal and Child Health Hospital, Wuhan, Hubei Province, China.,Hubei Province Key Laboratory of Occupational Hazard Identification and Control, Wuhan University of Science and Technology, Wuhan, Hubei Province, China
| | - H F Zhu
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, China.,Hubei Province Academy of Traditional Chinese Medicine, Wuhan, China
| | - X Z Chen
- Department of Pediatrics, Fourth Hospital of Wuhan, Hubei Province, Wuhan, China
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10
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Xie H, Chu L, Wu LQ, Fan XY, Wang P, Ma SY, Zheng DX, Li KL, Chen XZ, Yang XD. [Polarization of bone marrow-derived macrophages induced by recombinant Trichinella spiralis cysteine protease inhibitors in vitro]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020; 32:181-186. [PMID: 32458608 DOI: 10.16250/j.32.1374.2019245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To investigate the regulatory role of recombinant Trichinella spiralis cysteine protease inhibitors (rTs-Cys) in induction of polarization of bone marrow-derived macrophages (BMDMs) in vitro. METHODS BMDMs were captured and cultured in conditioned medium for 7 days. Then, mature BMDMs were harvested and assigned into four groups. Cells in Group A (negative control) were given 10 ng/mL IFN-γ combined with 100 ng/mL LPS, cells in Group B (positive control) were treated with IL-4 and IL-10 (at 10 ng/mL both), and cells in Group C (recombinant protein alone) were stimulated with 1 μg/mL rTs-Cys, while cells in Group D (protein co-culture) were simultaneously treated with 1 μg/mL rTs-Cys, 10 ng/mL IFN-γ and 100 ng/mL LPS. Cells and culture supernatant were collected 24 hour post-treatment, and the proportions of F4/80+, CD11b+, CD206+ and CD11c+ cells were detected by flow cytometry. The levels of interleukin IL-6 (IL-6), tumor necrosis factor-α (TNF-α), IL-10 and transforming growth factor-β (TGF-β) in the cell culture supernatant were measured by ELISA and the CD86+ and CD206+ phenotypes were identified by immunofluorescent staining. RESULTS Flow cytometry detected no significant difference in the proportion of F4/80+ CD11b+ CD11c+ cells among the four groups (F = 46.184, P < 0.001), and a lower proportion of F4/80+ CD11b+ CD11c+ cells was seen in groups C and D than in group A (all P values < 0.001). There was a significant difference in the proportion of F4/80+ CD11b+ CD206+ cells among the four groups (F = 11.032, P < 0.001), and a greater proportion of F4/80+ CD11b+ CD206+ cells was seen in groups C and D than in group A (all P values < 0.01). Immunofluorescent staining showed higher CD206+ expression and lower CD86+ expression in groups C and D than in Group A. There were significant differences in the IL-6 and (F = 3.950, P < 0.001) and TNF-α (F = 205.827, P < 0.001) levels in the cell culture supernatants among the four groups, and significantly lower IL-6 and TNF-α levels were measured in groups C and D than in Group A (both P < 0.05). There were significant differences in the IL-10 and (F = 8.274, P < 0.001) and TGF-β (F = 13.559, P < 0.01) levels in the cell culture supernatants among the four groups, and greater IL-10 and TGF-β levels were measured in Group C than in Group A (both P values < 0.01). In addition, the TGF-β level was significantly higher in Group D than in Group A (P < 0.05); however, there was no significant difference in the IL-10 level between groups D and A (P > 0.05). CONCLUSIONS rTs-Cys may induce the polarization of BMDMs to antiinflammatory M2 macrophages in vitro and inhibit the activation of M1 macrophages.
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Affiliation(s)
- H Xie
- Basic Medical College, Bengbu Medical College, Bengbu 233000, China.,Anhui Key Laboratory of Infection and Immunity, China
| | - L Chu
- The Second Affiliated Hospital of Bengbu Medical College, China
| | - L Q Wu
- Anhui Key Laboratory of Infection and Immunity, China.,The First Affiliated Hospital of Bengbu Medical College, China
| | - X Y Fan
- Anhui Key Laboratory of Infection and Immunity, China
| | - P Wang
- Anhui Key Laboratory of Infection and Immunity, China
| | - S Y Ma
- Anhui Key Laboratory of Infection and Immunity, China
| | - D X Zheng
- Anhui Key Laboratory of Infection and Immunity, China
| | - K L Li
- Anhui Key Laboratory of Infection and Immunity, China
| | - X Z Chen
- Basic Medical College, Bengbu Medical College, Bengbu 233000, China.,Anhui Key Laboratory of Infection and Immunity, China
| | - X D Yang
- Basic Medical College, Bengbu Medical College, Bengbu 233000, China.,Anhui Key Laboratory of Infection and Immunity, China
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11
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Zhang WH, Yang K, Chen XZ, Liu K, Chen XL, Zhao LY, Zhang B, Chen ZX, Chen JP, Zhou ZG, Hu JK. [Effect of standardized surgical treatment and multidisciplinary treatment strategy on the prognosis of gastric cancer patients: report of a single-center cohort study]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:396-404. [PMID: 32306609 DOI: 10.3760/cma.j.cn.441530-20200224-00086] [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: 02/05/2023]
Abstract
Objective: To explore the effect of standardized surgical treatment and multidisciplinary treatment strategy on the treatment outcomes of gastric cancer patients. Methods: A single-center cohort study was carried out. Clinicopathological and long-term follow up data of primary gastric cancer patients were retrieved from the database of Surgical Gastric Cancer Patient Registry (SGCPR) in West China Hospital of Sichuan University. Finally, 4516 gastric cancer patients were included and were divided into three groups according to time periods (period 1 group: exploration stage of standardized surgical treatment, 2000 to 2006, 967 cases; period 2 group: application stage of standardized surgical treatment, 2007 to 2012, 1962 cases; period 3 group: optimization stage of standardized surgical treatment and application stage of multidisciplinary treatment strategy, 2013 to 2016, 1587 cases). Differences in clinical data, pathologic features, and prognosis were compared among 3 period groups. Follow-up information was updated to January 1, 2020. The overall follow-up rate was 88.9% (4016/4516) and median follow-up duration was 51.58 months. Survival curve was drawn by Kaplan-Meire method and compared with log-rank test. Univariate and multivariate analyses were performed by Cox proportional hazards model. Results: There were significant differences among period 1, period 2 and period 3 groups in the rates of D2/D2+ lymphadenectomy [14.4%(139/967) vs. 47.2%(927/1962) vs. 75.4%(1197/1587), χ(2)=907.210, P<0.001], in the ratio of proximal gastrectomy [19.8%(191/967) vs. 16.6%(325/1962) vs. 8.2%(130/1587), χ(2)=100.020, P<0.001], and in the median intraoperative blood loss (300 ml vs. 100 ml vs. 100 ml, H=1126.500, P<0.001). Besides, the increasing trend and significant difference were also observed in the median number of examined lymph nodes among period 1, period 2 and period 3 groups (14 vs. 26 vs. 30, H=987.100, P<0.001). Survival analysis showed that the 5-year overall survival rate was 55.3% in period 1, 55.2% in period 2 and 62.8% in period 3, and significant difference existed between period 3 and period 1 (P=0.004). The Cox proportional hazards model analysis showed that treatment period (period 3, HR=0.820, 95%CI: 0.708 to 0.950, P=0.008), postoperative chemotherapy (HR=0.696, 95%CI: 0.631 to 0.768, P<0.001) and mid-low gastric cancer (HR=0.884, 95%CI: 0.804 to 0.973, P=0.011) were good prognostic factors. Whereas old age (≥65 years, HR=1.189, 95%CI: 1.084 to 1.303, P<0.001), palliative resection (R1/R2, HR=1.538,95%CI: 1.333 to 1.776, P<0.001), large tumor size (≥5 cm, HR=1.377, 95%CI: 1.239 to 1.529, P<0.001), macroscopic type III to IV (HR=1.165, 95%CI: 1.063 to 1.277, P<0.001) and TNM stage II to IV(II/I:HR=1.801,95%CI:1.500~2.162,P<0.001;III/I:HR=3.588, 95%CI: 3.028~4.251, P<0.001; IV/I: HR=6.114, 95%CI: 4.973~7.516, P<0.001) were independent prognostic risk factors. Conclusion: Through the implementation of standardized surgical treatment technology and multidisciplinary treatment model, the quality of surgery treatment and overall survival increase, and prognosis of gastric cancer patients has been improved.
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Affiliation(s)
- W H Zhang
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
| | - K Yang
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
| | - X Z Chen
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
| | - K Liu
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
| | - X L Chen
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
| | - L Y Zhao
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
| | - B Zhang
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
| | - Z X Chen
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
| | - J P Chen
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
| | - Z G Zhou
- Department of Gastrointestinal Surgery, Laboratory of Digestive Surgery, West China Hospital, Chengdu 610041, China
| | - J K Hu
- Department of Gastrointestinal Surgery, Laboratory of Gastric Cancer, West China Hospital, Chengdu 610041, China
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12
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Chen XZ, Wang XJ, Karasuta C, Zhou SW, Zhong Z, Chen ZG, Chen XK. [Nitrogen Removal from Mature Landfill Leachate via Denitrification-Partial Nitritation-ANAMMOX Based on a Zeolite Biological Aerated Filter]. Huan Jing Ke Xue 2020; 41:345-352. [PMID: 31854936 DOI: 10.13227/j.hjkx.201906165] [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: 06/10/2023]
Abstract
A combined process of denitrification-partial nitritation-ANAMMOX based on a zeolite biological aerated filter (ZBAF) was applied to treat mature landfill leachate. We investigate the partial nitritation characteristics of the ZBAF and the nitrogen removal performance as well as the carbon removal performance of the combined process. Results showed that, based on the selective inhibition of nitrite oxidizing bacteria (NOB) by free ammonia (FA), the ZBAF could successfully achieve stable and efficient partial nitrification of mature landfill leachate, with an average nitrite accumulation rate (NAR) of 93.8% and a maximum nitrite production rate (NPR) of 1.659 kg·(m3·d)-1. After adding 700 mg·L-1 glucose to the influent, due to the synergistic effect of denitrification and anammoxidation, the combined process achieved its best nitrogen removal performance at a reflux ratio of 2.0 and hydraulic retention time (HRT) of 2.2 days. The average ammonia removal efficiency (ARE), total nitrogen removal efficiency (NRE), total nitrogen removal loading rate (NRR), and average chemical oxygen demand (COD) removal efficiency were 97.2%, 90.0%, 0.585 kg·(m3·d)-1, and 45.3%, respectively. Furthermore, the NRR of the anaerobic ammonium oxidation (ANAMMOX) process (NRRANA) reached 1.268 kg·(m3·d)-1. High-throughput sequencing technology was used to analyze the microbial community structure in each device. Results showed that denitrifiers (Paracoccus and Comamonas), ammonia-oxidizing bacteria (AOB) (Nitrosomonas), and ANAMMOX bacteria (Candidatus Kuenenia and Candidatus Anammoxoglobus) were the dominant bacteria in the UASB, ZBAF, and ANAMMOX reactor, respectively, which corresponded to the stable nitrogen removal performance of the combined process.
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Affiliation(s)
- Xiao-Zhen Chen
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
- Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, China
| | - Xiao-Jun Wang
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
- Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, China
| | - Chayangkun Karasuta
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
- Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, China
| | - Song-Wei Zhou
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
- Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, China
| | - Zhong Zhong
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
- Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, China
| | - Zhen-Guo Chen
- School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510665, China
- Hua An Biotech Co., Ltd., Foshan 528300, China
| | - Xiao-Kun Chen
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
- Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Cluster, Ministry of Education, Guangzhou 510006, China
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13
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Liu DX, Chen XJ, Zhang J, Chen XZ, Luo G, Liu YJ, Xia Y, Tian RB. [Mid-term outcomes of coronary artery bypass surgery with left radial artery bypassed to right main coronary artery of severe stenosis]. Zhonghua Yi Xue Za Zhi 2019; 99:3313-3317. [PMID: 31715667 DOI: 10.3760/cma.j.issn.0376-2491.2019.42.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the mid-term outcomes of coronary artery bypass grafting (CABG) with left radial artery (RA) graft bypassed to right main coronary artery (RCA) of severe stenosis. Methods: Between September 2014 and April 2019, a total of consecutive 47 patients who had severe stenosis (≥90%) of RCA underwent total arterial revascularization, with left RA bypassed to RCA. There were 31 males and 16 females, with a mean age of (56.5±9.7) years old. The perioperative outcomes were observed and mid-term results were followed up. Results: A total of 46 left internal mammary artery (LIMA) grafts, 47 left radial artery (LRA), and 40 right RA grafts (RRA) were harvested with pedicles. LIMA was bypassed to LAD in 43 patients, RRA was to diagonal branches, ramus or oblique marginal in 37 cases, and LRA was to RCA. All grafts (except 3 composite Y or T grafts) were single. Mean graft number was 2-4 (2.7±0.9). There was one death due to cardiac tamponade. Three patients had postoperative atrial fibrillation, 1 had a forearm hematoma, 1 had acute renal insufficiency, and 2 had acute myocardial infarction. The mean tracheal intubation duration was 3.5-20.3 (8.3±4.7) hours, and the mean hospital stay was 6-13 (7.1±2.9) days. The average follow-up was 3-47 (23.3±7.5) months, with a follow-up rate of 86.96% (40/46). There were no major cardiovascular events during the follow-up. Three month after surgery, the mean left ventricular ejection fraction was significantly improved than that of pre-operation (60.0%±4.0% vs 42.4%±7.5%, P=0.003). Computed tomography angiography (CTA) examination showed that 58.7% (27/46) of patients had patent LRA after a mean follow-up duration of (19.5±7.3) months. Conclusion: CABG with LRA bypassed to RCA of severe stenosis proves to be safe and effective, with good mid-term outcomes.
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Affiliation(s)
- D X Liu
- Department of Cardiac Surgery, First Affiliated Hospital of Zunyi Medical University, Zunyi 563003, China
| | - X J Chen
- Department of Cardiac Surgery, Wuhan First Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - J Zhang
- Department of Cardiac Surgery, First Affiliated Hospital of Zunyi Medical University, Zunyi 563003, China
| | - X Z Chen
- Department of Cardiovascular Surgery, Wuhan Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - G Luo
- Department of Cardiac Surgery, First Affiliated Hospital of Zunyi Medical University, Zunyi 563003, China
| | - Y J Liu
- Department of Cardiac Surgery, First Affiliated Hospital of Zunyi Medical University, Zunyi 563003, China
| | - Y Xia
- Department of Cardiac Surgery, First Affiliated Hospital of Zunyi Medical University, Zunyi 563003, China
| | - R B Tian
- Department of Cardiac Surgery, First Affiliated Hospital of Zunyi Medical University, Zunyi 563003, China
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Yu SJ, Peng WJ, Zhang H, Chen XZ, Wei MH, Yan WR. [Association between both maternal and fetal angiotensinogen gene single nucleotide polymorphism and preeclampsia/eclampsia]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 40:997-1002. [PMID: 31484268 DOI: 10.3760/cma.j.issn.0254-6450.2019.08.023] [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 explore the association between preeclampsia/eclampsia and maternal and fetal angiotensinogen SNPs. Methods: From January 2008 to October 2015, a case-parents/mother-control designed study was conducted among 347 preeclampsia/eclampsia cases and 700 controls to collect related information on their demographic characteristics and to detect the related angiotensinogen SNPs' genotypes. Both log-linear and unconditional logistic regression methods were employed to investigate the genetic effects of maternal/fetal angiotensinogen SNPs on preeclampsia/eclampsia. Multivariate binary unconditional logistic regression model and covariance were used to analyze the relationship between BMI before pregnancy, weight gain during pregnancy and overweight and obesity in preschool children. Results: Both fetal angiotensinogen rs3789679 GA and AA genotype were associated with the reduced risks of preeclampsia/eclampsia, with ORs as 0.73 (95%CI: 0.55-0.96) and 0.62 (95%CI: 0.39-0.98), respectively. For fetal angiotensinogen rs2493132, individuals that carrying the TT genotype, presented a positive association with the risk of preeclampsia/eclampsia, with OR as 1.60 (95%CI: 1.08-2.37). However, these associations were not statistically significant after the correction of the false discovery rate. It was observed that fetal rs3789679 could reduce the risk of preeclampsia/eclampsia (OR=0.73, 95%CI: 0.55-0.96) under the dominant model (GA+AA/GG) while fetal rs2493132 increased the risk of preeclampsia/eclampsia (OR=1.66, 95%CI: 1.13-2.44) under the recessive model (TT/CC+CT). Maternal rs5051 presented an association with preeclampsia/eclampsia (OR=1.33, 95%CI: 1.01-1.76) under the dominant model (TC+CC/TT). Conclusions: Results from the dominant model showed that both fetal rs3789679 GA and AA genotype reduced the risk of preeclampsia/eclampsia and maternal rs5051 TC while CC genotype increased the risk of preeclampsia/eclampsia. Fetal rs2493132 TT genotype seemed to be associated with the risk of preeclampsia/eclampsia under the recessive model.
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Affiliation(s)
- S J Yu
- Department of Epidemiology and Statistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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He S, Xiao K, Chen XZ, Li T, Ouyang T, Wang Z, Guo ML, Liu ZQ. Enhanced photoelectrocatalytic activity of direct Z-scheme porous amorphous carbon nitride/manganese dioxide nanorod arrays. J Colloid Interface Sci 2019; 557:644-654. [PMID: 31561081 DOI: 10.1016/j.jcis.2019.09.035] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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: 06/27/2019] [Revised: 08/26/2019] [Accepted: 09/10/2019] [Indexed: 11/17/2022]
Abstract
Carbon nitride (C3N4) is a promising photocatalyst that can be applied in environmental remediation and energy conversion. However, the absorption range and charge separation efficiency of C3N4 are still severely restricted for its large-scale practical applications. Herein, we demonstrate a simple thermal polymerization and electrodeposition method, followed by partial etching strategy to synthesize direct Z-scheme porous zinc oxide/amorphous carbon nitride/manganese dioxide hybrid core-shell nanorod array (denoted as P-ZnO/ACN/MnO2) by encapsulating amorphous carbon nitride layers (ACN) and manganese dioxide nanosheets (MnO2) on the zinc oxide nanorod arrays (denoted as ZnO). Interestingly, ZnO serves as the collector of charge carriers and MnO2 plays a significant role in protecting ACN from corrosion. The as-prepared Z-scheme P-ZnO/ACN/MnO2 heterojunction exhibits high photocurrent density of 5.2 mA cm-2 at 0.6 V vs. Ag/AgCl, high photoconversion efficiency 0.98%, and universal photoelectrocatalytic degradation activity for degradation of organic dyes under visible light irradiation. The band gap energy and conduction band position of ZnO, ACN and MnO2 are calculated by UV-visible diffuse reflection and Mott-Schottky measurement, which strongly support the direct Z-scheme charge carrier migration mechanism. This finding provides an efficient strategy to construct highly active and stable C3N4-based Z-scheme photocatalytic system.
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Affiliation(s)
- Shi He
- Key Laboratory of Analytical Chemistry for Biomedicine/School of Chemistry, South China Normal University, Guangzhou 510006, PR China; School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, PR China
| | - Kang Xiao
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, PR China
| | - Xiao-Zhen Chen
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, PR China
| | - Ting Li
- Guangzhou Research Institute of Environmental Protection, Guangzhou 510006, PR China
| | - Ting Ouyang
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, PR China
| | - Zhu Wang
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, PR China
| | - Man-Li Guo
- Key Laboratory of Analytical Chemistry for Biomedicine/School of Chemistry, South China Normal University, Guangzhou 510006, PR China.
| | - Zhao-Qing Liu
- School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials/Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, PR China.
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16
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Zhang WH, Zhang DY, Chen XZ, Hu JK. [Comparison of safety and efficacy between proximal gastrectomy and total gastrectomy for upper third gastric cancer: a Meta-analysis]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:470-478. [PMID: 31104433 DOI: 10.3760/cma.j.issn.1671-0274.2018.05.014] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Objective: To compare the safety and efficacy between proximal gastrectomy and total gastrectomy and to ascertain the optimized procedure for patients with upper third gastric cancer through meta-analysis. Methods: The English literatures about proximal gastrectomy and total gastrectomy for upper third gastric cancer were searched from PubMed, EMBASE, the Cochrane Library and the Web of Science database and then collected. The quality of enrolled studies was independently assessed by two researchers according to the Newcastle-Ottawa Scale for retrospective studies and Jadad scale for RCT studies. The basic information of the literature and related clinical indicators were extracted. The primary endpoints were 5-year overall survival rate and recurrence rate. The secondary endpoints were operative time, intraoperative blood loss, morbidity of postoperative complication, incidence of anastomotic stenosis and incidence of reflux esophagitis. Considering the influence of tumor staging on postoperative clinicopathological features and prognosis, a subgroup analysis was performed on the literatures including cases of early gastric cancer and those including cases of tumor stage I to IV. Statistical analyses were carried out by the "metafor" and "meta" software packages from RevMan 5.3 software and R software (V3.2.4). Results: Twenty-five literatures involving 3667 patients (proximal gastrectomy for 1483, total gastrectomy for 2184) were finally enrolled for analysis, including 24 retrospective studies with ≥ 5 points and 1 RCT with 3 points, and all the literatures were of high quality. A total of 2516 cases of early gastric cancer were enrolled in 18 articles, including 1027 with proximal gastrectomy and 1489 with total gastrectomy. A total of 1151 cases with stage I to IV were enrolled in 7 articles, including 456 in proximal gastrectomy group and 695 in total gastrectomy group. Five-year survival rate was not significantly different for patients with early gastric cancer between the proximal gastrectomy group and total gastrectomy group (OR=1.16, 95% CI: 0.72 to 1.86, P=0.54). Similarly, there was no significant difference for patients with stage I to IV between the proximal gastrectomy group and the total gastrectomy group (OR=1.19, 95% CI: 0.92 to 1.53, P=0.18). Recurrence rate of early gastric cancer patients was not significantly different between the proximal gastrectomy group and the total gastrectomy group (OR=0.40, 95% CI: 0.05 to 3.16, P=0.39).However, the recurrence rate of the proximal gastrectomy group was higher than that of the total gastrectomy group in patients with stage I to IV (OR=1.55, 95% CI: 1.09 to 2.19, P<0.01), whose difference was statistically significant. There was no significant differences in postoperative complication between the groups, both in patients with early gastric cancer, and in those with stage I to IV (both P>0.05). The incidences of postoperative anastomotic stenosis (OR=3.57, 95% CI: 1.82 to 6.99, P<0.01) and reflux esophagitis (OR=2.83, 95% CI: 1.23 to 6.54, P=0.01) in the proximal gastrectomy group were significantly higher than those in the total gastrectomy group in patients with early gastric cancer. Conclusions: There is no significant difference in long-term survival outcomes between total gastrectomy and proximal gastrectomy for upper gastric tumors. However,incidence of anastomotic stenosis and reflux esophagitis, and tumor recurrence rate after total gastrectomy are significantly lower. The total gastrectomy is recommended as the first choice for advanced upper gastric tumor.
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Affiliation(s)
- W H Zhang
- Department of Gastrointestinal Surgery and Laboratory of Gastric Cancer, West China Hospital, Sichuan University, Chengdu 610041, China
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Jiao CC, Zhang WX, Sun LH, Chen S, Xu Q, Xie SF, Wang LY, Feng Y, Chen XZ. [Effects of intrathecal transient receptor potential vanilloid 1 blocker on cervical distension induced visceral pain response]. Zhonghua Yi Xue Za Zhi 2019; 99:1018-1023. [PMID: 30955316 DOI: 10.3760/cma.j.issn.0376-2491.2019.13.012] [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
Objective: With the aid of an acute visceral pain model of uterine cervical distension (UCD), the present study aimed to observe the effects of intrathecal administration of transient receptor potential vanilloid 1 (TRPV1) antagonist SB-366791 on UCD induced-visceral nociception as well as its involved molecular mechanisms. Methods: A total of 30 Sprague-Dawley-derived adult virgin female rats were used. UCD model was established under isoflurane inhalation anesthesia. Briefly, a lower abdominal incision at midline was made to expose the uteral cervix, two metal rods were inserted through both sides of the cervix separately, one rod was fixed and the other one was connected to a pulley system with application of manual weighted traction (0, 25, 50, 75 or 100 g) for simulating 1 h of cervical distension. In addition, 12 Sprague-Dawley-derived adult virgin female rats were subjected to intrathecal catheter implantation, and UCD was established 7 days later. The rats were divided randomly into two groups; one group was administrated with intrathecal SB-366791 while the other was administrated with the same volume of saline as control. The 75 g distension force was then applied for an hour and the electromyographic (EMG) of musculus rectus abdominis, heart rate as well as respiratory frequency were measured continuously during the surgery. The spinal cord (T(12)-L(2)) was collected 30 minutes after UCD for the detection of changes of c-FOS and TRPV1 expression. Results: UCD increased EMG activity (P<0.05) and c-FOS expression (P<0.05) in the deep dorsal horn region and central canal of the spinal cord (T(12)-L(2)) in a stimuli-dependent manner, the expression of TRPV1 in the T(12)-L(2) spinal cord also increased in response to UCD stimulation (P<0.05). Compared with the saline group, intrathecal SB-366791 significantly decreased EMG activity (P<0.05) as well as spinal c-FOS (P<0.05) expression induced by UCD. Conclusions: UCD in rats increases EMG activity of musculus rectus abdominis as well as spinal c-FOS and TRPV1 expression. Intrathecal administration of TRPV1 antagonist SB-366791 significantly decreases the visceral nociception induced by UCD.
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Affiliation(s)
- C C Jiao
- Department of Anesthesia, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - W X Zhang
- Department of Anesthesia, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - L H Sun
- Department of Anesthesia, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - S Chen
- Badenian Medical Class, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Q Xu
- Department of Anesthesia, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - S F Xie
- Department of Anesthesia, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - L Y Wang
- Department of Anesthesia, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Y Feng
- Department of Anesthesia, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - X Z Chen
- Department of Anesthesia, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
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Hu WF, Zhao JQ, Chen XZ, Zhou MQ, Zhang XM, Xu XY, Yuan WC. Organocatalytic enantioselective sulfa-Michael addition of thiocarboxylic acids to β-trifluoromethyl-α,β-unsaturated ketones for the construction of stereogenic carbon center bearing a sulfur atom and a trifluoromethyl group. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.02.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Jia XP, Chen XZ, Lou QB, Zhou ZF, Gao L, Zhou PF. Sevoflurane regulates CARMA3 to inhibit migration and invasion of gastric cancer cells by targeting NF-κB signaling pathway. Shijie Huaren Xiaohua Zazhi 2019; 27:220-227. [DOI: 10.11569/wcjd.v27.i4.220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the effect of sevoflurane on cell migration and invasion in gastric cancer (GC) cells, and to explore the underlying mechanism.
METHODS After SGC7901 cells were transfected with siCARMA3 (siCARMA3 group), siControl (NC group), pcDNA 3.1-CARMA3 (CARMA3 group), or pcDNA 3.1 (vector group) by liposome method, the expression of CARMA3 mRNA in cells was detected by qRT-PCR, and the protein expression of CARMA3, p-p65, and p65 was detected by Western blot.
RESULTS Compared with the control group, sevoflurane inhibited the migration and invasion of GC cells and down-regulated the expression of CARMA3. Silencing of CARMA3 inhibited the migration and invasion of GC cells, while overexpression of CARMA3 promoted the migration and invasion of GC cells. CARMA3 targeted the NF-κB pathway. Thus, sevoflurane regulated CARMA3 to inhibit migration and invasion of GC cells by targeting the NF-κB pathway.
CONCLUSION Sevoflurane could inhibit the migration and invasion of GC cells via mechanisms that may be related to the regulation of CARMA3 to target the NF-κB pathway. This finding will provide a basis for clinical treatment of GC with sevoflurane.
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Affiliation(s)
- Xiu-Ping Jia
- Department of Anesthesiology, Yiwu Central Hospital, Yiwu 322000, Zhejiang Province, China
| | - Xiao-Zhen Chen
- Department of Anesthesiology, Yiwu Central Hospital, Yiwu 322000, Zhejiang Province, China
| | - Qun-Bin Lou
- Department of Anesthesiology, Yiwu Central Hospital, Yiwu 322000, Zhejiang Province, China
| | - Zhen-Feng Zhou
- Department of Anesthesiology, Zhejiang Provincial People's Hospital, Hangzhou 310000, Zhejiang Province, China
| | - Liang Gao
- Department of Oncology, Zhejiang Provincial People's Hospital, Hangzhou 310000, Zhejiang Province, China
| | - Peng-Fei Zhou
- Department of Oncology, Zhejiang Provincial People's Hospital, Hangzhou 310000, Zhejiang Province, China
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Zhou ZH, Chen XZ, Chen XW, Wang YX, Zhang SY, Sun SF, Zhen JZ. Improved anchoring nails: design and analysis of resistance ability : Tensile test and finite element analysis (FEA) of improved anchoring nails used in temporomandibular joint (TMJ) disc anchor. BMC Oral Health 2018; 18:150. [PMID: 30144810 PMCID: PMC6109334 DOI: 10.1186/s12903-018-0606-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 08/08/2018] [Indexed: 11/10/2022] Open
Abstract
Background Anchorage is one of the most important treatments for severe temporomandibular joint disorder (TMD). Anchoring nails have shown great success in clinical trials; however, they can break under pressure and are difficult to remove. In this study, we aimed to evaluate an improved anchoring nail and its mechanical stability. Methods The experiment consisted of two parts: a tensile test and finite element analysis (FEA). First, traditional and improved anchoring nails were implanted into the condylar cortical bone and their tensile strength was measured using a tension meter. Second, a three-dimensional finite element model of the condyles with implants was established and FEA was performed with forces from three different directions. Results The FEA results showed that the total force of the traditional and improved anchoring nails is 48.2 N and 200 N, respectively. The mean (±s.d.) maximum tensile strength of the traditional anchoring nail with a 3–0 suture was 27.53 ± 5.47 N. For the improved anchoring nail with a 3–0 suture it was 25.89 ± 2.64 N and with a 2–0 suture it was above 50 N. The tensile strengths of the traditional and improved anchoring nails with a 3–0 suture was significantly different (P = 0.033–< 0.05). Furthermore, the difference between the traditional anchoring nail with a 3–0 suture and the improved anchoring nail with a 2–0 suture was also significantly different (P = 0.000–< 0.01). Conclusion The improved anchoring nail, especially when combined with a 2–0 suture, showed better resistance ability compared with the traditional anchoring nail.
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Affiliation(s)
- Z H Zhou
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People's Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai, 200011, People's Republic of China
| | - X Z Chen
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People's Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai, 200011, People's Republic of China
| | - X W Chen
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People's Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai, 200011, People's Republic of China
| | - Y X Wang
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People's Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai, 200011, People's Republic of China
| | - S Y Zhang
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People's Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai, 200011, People's Republic of China. .,Department of Oral Surgery, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, College of Stomatology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, No. 639, Zhi-Zao-Ju Road, 200011, Shanghai, People's Republic of China.
| | - S F Sun
- Department of Stomatology, Tongren Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, People's Republic of China.
| | - J Z Zhen
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People's Hospital, Shanghai Jiao Tong University, 639 Zhi Zao Ju Road, Shanghai, 200011, People's Republic of China.
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Lou QB, Nan K, Xiang FF, Chen XZ, Zhu WS, Zhang XT, Li J. [Effect of perioperative multi-day low dose ketamine infusion on prevention of postmastectomy pain syndrome]. Zhonghua Yi Xue Za Zhi 2018; 97:3636-3641. [PMID: 29275607 DOI: 10.3760/cma.j.issn.0376-2491.2017.46.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effects of multi-day low dose ketamine infusion for postmastectomy pain syndrome (PMPS) after breast cancer surgery. Methods: This study was a prospective randomized controlled trial. From June 2015 to May 2016 in Affiliated Yiwu Hospital of Wenzhou Medical University, 66 patients with breast cancer surgery were randomly divided into control group (group C) and ketamine group (group K). Patients in group K were infused with 0.5 mg/kg of ketamine mixed in 250 ml of 0.9% normal saline in 1 h daily for 7 days. Patients in group C were infused the same dose of 0.9% normal saline. Anesthesia induction in both groups were given intravenous midazolam, sufentanil, propofol, vecuronium and intermittent positive pressure ventilation after tracheal intubation, anesthesia was maintained with propofol and remifentanil. After awakening, all patients were monitored in postanesthesia care unit (PACU) and given patient-controlled intravenous analgesia(PCIA). Pain scores were assessed using visual analogue scales (VAS) during PACU, 4 h, 24 h and 2-5 d after surgery, simultaneously analgesic requirement were recorded. Patients were evaluated Hospital Anxiety and Depression Scale (HADS) 5 d after surgery . The patients were followed up for 6 months. At 3 m, 6 m after surgery, the incidence of PMPS, the level of pain, pain site and HADS scale were assessed. Results: The VAS score uring PACU, 4 h, 24 h and 2-5 d after surgery in group K( (2.5±0.8), (2.4±0.5), (2.4±0.5), (2.0±0.4), (1.5±0.5), (1.0±0.4), 1(1), respectively) was lower than those in group C ((2.9±1.0), (2.9±0.6), (2.6±0.5), (2.3±0.5), (1.8±0.6), (1.5±0.5), 1(0), respectively). There was statistically difference between the two groups (all P<0.05). The consumption of analgesics required at each time postoperation in group K were also lower than that of group C(all P<0.05). Followed up for 6 months, 2 lost in group C, 1 lost in group K. The incidence of PMPS in group K at 3 months and 6 months after surgery was significantly lower(25% and 22%) than that in group C(52% and 45%)(χ(2)=4.729, 3.842, all P<0.05). There were no significant difference in pain level and site between two groups of PMPS patients (all P>0.05). There were no significant difference of HADS scale preoperative and 5 d after surgery between two groups (all P>0.05); and HADS scale in group K at 3 m and 6 m after surgery was significantly lower than that in group C(all P<0.05). Conclusion: Perioperative continuous multi-day low dose ketamine infusion can effectively reduce the incidence of PMPS after breast cancer surgery.
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Affiliation(s)
- Q B Lou
- Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China(now works in Department of Anesthesiology, Affiliated Yiwu Hospital of Wenzhou Medical University, Yiwu 322000, china)
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Chen XZ, Zarzuela R, Zhang J, Song C, Zhou XF, Shi GY, Li F, Zhou HA, Jiang WJ, Pan F, Tserkovnyak Y. Antidamping-Torque-Induced Switching in Biaxial Antiferromagnetic Insulators. Phys Rev Lett 2018; 120:207204. [PMID: 29864355 DOI: 10.1103/physrevlett.120.207204] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 03/15/2018] [Indexed: 06/08/2023]
Abstract
We investigate the current-induced switching of the Néel order in NiO(001)/Pt heterostructures, which is manifested electrically via the spin Hall magnetoresistance. Significant reversible changes in the longitudinal and transverse resistances are found at room temperature for a current threshold lying in the range of 10^{7} A/cm^{2}. The order-parameter switching is ascribed to the antiferromagnetic dynamics triggered by the (current-induced) antidamping torque, which orients the Néel order towards the direction of the writing current. This is in stark contrast to the case of antiferromagnets such as Mn_{2}Au and CuMnAs, where fieldlike torques induced by the Edelstein effect drive the Néel switching, therefore resulting in an orthogonal alignment between the Néel order and the writing current. Our findings can be readily generalized to other biaxial antiferromagnets, providing broad opportunities for all-electrical writing and readout in antiferromagnetic spintronics.
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Affiliation(s)
- X Z Chen
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - R Zarzuela
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - J Zhang
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
| | - C Song
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - X F Zhou
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - G Y Shi
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - F Li
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - H A Zhou
- State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China
| | - W J Jiang
- State Key Laboratory of Low-Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing 100084, China
| | - F Pan
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
| | - Y Tserkovnyak
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
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Chen XZ, Feng JF, Wang ZC, Zhang J, Zhong XY, Song C, Jin L, Zhang B, Li F, Jiang M, Tan YZ, Zhou XJ, Shi GY, Zhou XF, Han XD, Mao SC, Chen YH, Han XF, Pan F. Tunneling anisotropic magnetoresistance driven by magnetic phase transition. Nat Commun 2017; 8:449. [PMID: 28878205 PMCID: PMC5587625 DOI: 10.1038/s41467-017-00290-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 06/20/2017] [Indexed: 11/18/2022] Open
Abstract
The independent control of two magnetic electrodes and spin-coherent transport in magnetic tunnel junctions are strictly required for tunneling magnetoresistance, while junctions with only one ferromagnetic electrode exhibit tunneling anisotropic magnetoresistance dependent on the anisotropic density of states with no room temperature performance so far. Here, we report an alternative approach to obtaining tunneling anisotropic magnetoresistance in α′-FeRh-based junctions driven by the magnetic phase transition of α′-FeRh and resultantly large variation of the density of states in the vicinity of MgO tunneling barrier, referred to as phase transition tunneling anisotropic magnetoresistance. The junctions with only one α′-FeRh magnetic electrode show a magnetoresistance ratio up to 20% at room temperature. Both the polarity and magnitude of the phase transition tunneling anisotropic magnetoresistance can be modulated by interfacial engineering at the α′-FeRh/MgO interface. Besides the fundamental significance, our finding might add a different dimension to magnetic random access memory and antiferromagnet spintronics. Tunneling anisotropic magnetoresistance is promising for next generation memory devices but limited by the low efficiency and functioning temperature. Here the authors achieved 20% tunneling anisotropic magnetoresistance at room temperature in magnetic tunnel junctions with one α′-FeRh magnetic electrode.
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Affiliation(s)
- X Z Chen
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - J F Feng
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
| | - Z C Wang
- Beijing National Center for Electron Microscopy, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.,Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - J Zhang
- School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, 430074, Wuhan, China
| | - X Y Zhong
- Beijing National Center for Electron Microscopy, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - C Song
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
| | - L Jin
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - B Zhang
- Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100124, China
| | - F Li
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - M Jiang
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Y Z Tan
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - X J Zhou
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - G Y Shi
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - X F Zhou
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - X D Han
- Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100124, China
| | - S C Mao
- Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100124, China
| | - Y H Chen
- Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, 100124, China
| | - X F Han
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
| | - F Pan
- Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
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Yue DF, Zhao JQ, Chen XZ, Zhou Y, Zhang XM, Xu XY, Yuan WC. Multiple Hydrogen-Bonding Bifunctional Thiourea-Catalyzed Asymmetric Dearomative [4 + 2] Annulation of 3-Nitroindoles: Highly Enantioselective Access to Hydrocarbazole Skeletons. Org Lett 2017; 19:4508-4511. [PMID: 28809570 DOI: 10.1021/acs.orglett.7b02068] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A method for the enantioselective construction of hydrocarbazole skeletons through dearomative [4 + 2] annulation of 3-nitroindoles with Nazarov reagents is reported. The reactions use multiple hydrogen-bonding bifunctional thiourea as catalyst and are highly diastereo- and enantioselective (up to >20:1 dr and >99% ee). The protocol was demonstrated by preparative-scale experiment and the versatile conversion of the products. The multiple hydrogen-bonding in the catalyst plays a pivotal role in the reactivity and stereoselectivity.
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Affiliation(s)
- Deng-Feng Yue
- University of Chinese Academy of Sciences , Beijing 100049, China
| | - Jian-Qiang Zhao
- Institute for Advanced Study, Chengdu University , Chengdu 610106, China
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Li WT, Chen XZ, Tu WJ, Huang ZZ, Chang LH, Wang J, Zhang GH. [Psychopathological characteristics in patients with deviation of nasal septum: a preliminary analysis]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 51:655-660. [PMID: 27666702 DOI: 10.3760/cma.j.issn.1673-0860.2016.09.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the psychopathological characteristics in patients with deviation of nasal septum. Methods: Between May 2015 and December 2015, fourty-four patients with deviated nasal septum and 37 patients with vocal cord polyp as control were included in this study. Psychological characteristics were evaluated by a series of questionnaire instruments including symptom checklist-90 (SCL-90), self-rating depression scale (SDS) and self-rating anxiety scale (SAS). Visual analogue scale (VAS) and rhinomanometry through front nostril were used to evaluate nasal symptom. The correlation between psychological characteristics and nasal symptom was evaluated. SPSS 20.0 software was used to analyze the data. Results: The SCL-90 score in nasal septal deviation group was 130.4±48.3. The total score and total average score of SCL-90 had no significant difference between nasal septal deviation group and the Chinese standard or control group(t value was 0.469, 0.112, 1.575, 1.564, respectively, all P>0.05). The scores of somatization, depression and anxiety factors in nasal septal deviation group were higher than control group (t value was 2.380, 2.133, 1.969, respectively, all P<0.05). The proportion of positive patients in these three factors between nasal septal deviation group and control group had significant differences (χ2 value was 11.585, 9.610, 5.429, respectively, all P<0.05). The scores of SDS and SAS in nasal septal deviation group were 46.0±10.6 and 43.0±10.2, which were higher than that in the Chinese standard and control group (t value was 5.342, 6.236, 1.476, 3.013, respectively, all P<0.05). There were 9 patients companying with depression or anxiety (20.5%, 20.5%, respectively) and 5 patients companying with depression and anxiety in nasal septal deviation group (11.4%). There were positive correlation not only between the scores of SDS and the depression factor of SCL-90 but also between the scores of SAS and the anxiety factor of SCL-90 (Z=0.415, P=0.005, Z=0.445, P=0.002, respectively). The scores of SDS and SAS had positive correlation (Z=0.392, P=0.008). The VAS score of nasal obstruction was 6.0±3.2. The rhinomanometry in inspiratory and expiratory phase were (0.202±0.140) kPa·S/cm3 and (0.230±0.161) kPa·S/cm3. Besides the positive correlation between the rhinomanometry in inspiratory phase and SDS (Z=0.332, P=0.045), the psychological scores, including SCL-90 score, depression, anxiety factors score, SAS and SDS, had no correlation with VAS scores and rhinomanometry (r value was -0.030, -0.052, -0.026, 0.107, 0.185, 0.066, 0.160, 0.203, respectively, all P>0.05). Conclusions: High prevalence of depression and anxiety is found in patients with deviation of nasal septum. The SCL-90 score is consistent with SDS and SAS. Besides the positive correlation between the rhinomanometry in inspiratory phase and SDS, the psychological scores (SCL-90 score, depression, anxiety factors score, SAS and SDS) have no correlation with VAS score and rhinomanometry.
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Affiliation(s)
- W T Li
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yatsen University, Guangzhou 510630, China
| | - X Z Chen
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yatsen University, Guangzhou 510630, China
| | - W J Tu
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yatsen University, Guangzhou 510630, China
| | - Z Z Huang
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yatsen University, Guangzhou 510630, China
| | - L H Chang
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yatsen University, Guangzhou 510630, China
| | - J Wang
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yatsen University, Guangzhou 510630, China
| | - G H Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, the Third Affiliated Hospital of Sun Yatsen University, Guangzhou 510630, China
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Chen XZ, Lou QB, Sun CC, Zhu WS, Li J. [Effect of intravenous infusion with lidocaine on rapid recovery of laparoscopic cholecystectomy]. Zhonghua Yi Xue Za Zhi 2017; 97:934-939. [PMID: 28355756 DOI: 10.3760/cma.j.issn.0376-2491.2017.12.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of intravenous infusion with lidocaine on rapid recovery of laparoscopic cholecystectomy. Methods: This study was a prospective randomized controlled trial. From February to August 2016 in Affiliated Yiwu Hospital of Wenzhou Medical University, 60 patients scheduled for laparoscopic cholecystectomy under general anesthesia were involved and randomly divided into control group (n=30) and lidocaine group (n=30). Patients in lidocaine group received lidocaine 1.5 mg/kg intravenously before induction and followed by 2.0 mg·kg(-1)·h(-1) to the end of surgery. Patients in control group received equal volumes of saline intravenously. Anesthesia induction in both groups were given intravenous midazolam 0.03 mg/kg, sufentanil 0.2 μg/kg, propofol 2.0 mg/kg and cisatracuium 0.2 mg/kg. Anesthesia was maintained with propofol 0.05-0.20 mg·kg(-1)·min(-1) and remifentanil 0.1-0.5 μg·kg(-1)·min(-1) for laryngeal mask airway which bispectral index (BIS) value maintained at 40-60. BIS, heart rate(HR) and mean arterial pressure(MAP) were recorded before anesthesia induction, before and immediately after laryngeal mask implantation, intraoperative 30 min and anesthesia awake. Pain scores were assessed using visual analogue scales (VAS) at postoperation immediately, 30 min during postanesthesia care unit (PACU), 2, 6, 12, and 24 h after surgery. The time of PACU retention, postoperative ambulation, first intestine venting and discharge were recorded. The dosage of propofol and remifentanil, the frequency of sufentanil used, the incidence of postoperative nausea and vomiting were also recorded. Patient satisfaction was evaluated by using Simple Restoration Quality Score (QoR-9). Results: BIS values before and after laryngeal mask implantation in lidocaine group were 50.50±3.47 and 54.63±1.25 respectively, which was lower than those in control group(54.30±4.78, 55.80±2.33; t=3.542, 2.423, all P<0.05). The VAS score at postoperation immediately, PACU 30 min, postoperative 2, 6, 12 h in lidocaine group were 2.76±0.97, 2.37±0.93, 2.10±1.12, 1.76±0.97, 1.20±0.76 respectively, which was lower than those in control group (3.83±1.34, 3.27±1.26, 3.06±1.20, 2.63±0.88, 1.90±0.84; t=3.528, 3.154, 3.217, 3.603, 3.372, all P<0.05 ). The frequency of additional sufentanil at postoperation immediately and PACU 30 min in lidocaine group was 5(17%), 3(10%), which were less than those in control group(12(40%), 9(30%); χ(2)=4.022, 3.950, all P<0.05). The dosage of propofol and remifentanil in lidocaine group were (4.33±0.75) mg·kg(-1)·h(-1) and (9.00±1.66) μg·kg(-1)·h(-1) respectively, which were less than those in control group ((5.20±1.39) mg·kg(-1)·h(-1) and (10.43±2.20) μg·kg(-1)·h(-1;) t= 2.982, 2.842, all P<0.05). The time of PACU retention, postoperative ambulation and first intestine venting were (39.90 ± 8.06) min, (11.93±1.68) h and (10.16±1.05) h respectively in lidocaine group, which were shorter than those in control group ((48.23±10.04) min, (13.16±1.58) h and (11.13±1.30) h; t=3.514, 2.931, 3.156, all P<0.05). The QoR-9 score in lidocaine group was 15.60±1.07, which was higher than that in control group(14.73±0.74, t=-3.649, P<0.05). There was no significant difference in the incidence of postoperative nausea/vomiting and the discharge time between two groups (all P>0.05). Conclusion: Intravenous infusion of lidocaine can effectively reduce the dosages of propofol and remifentanil, postoperative early VAS score, postoperative ambulation time and first intestine venting time which could improve the satisfaction of patients.
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Affiliation(s)
- X Z Chen
- Department of Anesthesiology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
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Tang Q, Hu QY, Piao YF, Hua YH, Chen XZ. [Analysis of the therapeutic effects of different treatment modalities on the outcomes of 87 patients with lung oligometastasis from nasopharyngeal carcinoma after radiotherapy]. Zhonghua Zhong Liu Za Zhi 2017; 38:218-22. [PMID: 26988829 DOI: 10.3760/cma.j.issn.0253-3766.2016.03.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE The aim of the present study was to evaluate the efficacy of three different modalities in treatment of lung oligometastases from nasopharyngeal carcinoma (NPC) after radiotherapy and to identify a more appropriate treatment modality. METHODS The clinical data of 87 cases of lung oligometastases from NPC were analyzed retrospectively. Among them, 33 patients underwent local small-field irradiation+ /- chemotherapy, 28 underwent whole-lung irradiation+ chemotherapy, and 26 underwent simple chemotherapy. The survival rates were calculated using Kaplan-Meier analysis. The differences among the modalities were evaluated using the log-rank test. Cox univariate and multivariate analyses were performed to determine the influencing factors. RESULTS The 3-year lung metastasis survival (LMS) rates of patients with lung metastasis undergoing the three treatment modalities (local small-field irradiation+ /-chemotherapy, whole-lung irradiation+ chemotherapy and chemotherapy alone) were 89.3%, 72.7%, and 72.4%, respectively, showing a significant difference between the groups (P=0.003). Further subgroup analysis showed that the 5-year LMS rate was significantly higher in the local small-field irradiation+ /-chemotherapy group than that in the whole-lung irradiation+ chemotherapy group and chemotherapy alone group (P=0.001). The 2-year progression-free survival (PFS) rates of the three groups were 57.1%, 25.8% and 3.8%, respectively, showing significant intergroup differences (P=0.002 and P<0.001). Multivariate analysis indicated that compared with the whole lung irradiation group and the chemotherapy alone group, the local irradiation+ /- chemotherapy is an independent favorable prognostic factor for LMS and PFS (P<0.05). CONCLUSION Local radiotherapy combined with systemic chemotherapy is the best therapeutic modality for lung oligometastases derived from NPC after radiotherapy, improving the LMS and prolonging the PFS.
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Affiliation(s)
- Q Tang
- Department of Head and Neck Cancer Radiotherapy, Zhejiang Cancer Hospital, Hangzhou 310022, China
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Zhao M, Da-Wa ZM, Guo DL, Fang DM, Chen XZ, Xu HX, Gu YC, Xia B, Chen L, Ding LS, Zhou Y. Cytotoxic triterpenoid saponins from Clematis tangutica. Phytochemistry 2016; 130:228-237. [PMID: 27262876 DOI: 10.1016/j.phytochem.2016.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Revised: 05/15/2016] [Accepted: 05/25/2016] [Indexed: 06/05/2023]
Abstract
Eight previously undescribed oleanane-type triterpenoid saponins, clematangoticosides A-H, together with eight known saponins, were isolated from the whole plants of Clematis tangutica (Maxim.) Korsh. Their structures were elucidated by extensive spectroscopic analysis, in combination with chemical methods (acid hydrolysis and mild alkaline hydrolysis). Clematangoticosides D-G were found to be unusual 23, 28-bidesmosidic glycosides. The cytotoxic activities of all of the isolated saponins were evaluated against the four human cancer cell lines SGC-7901, HepG2, HL-60 and U251MG. Clematoside S, sapindoside B, kalopanax saponin A, and koelreuteria saponin A exhibited cytotoxicity against all of the test cancer cell lines with IC50 values in the range of 1.88-27.20 μM, while clematangoticoside D and F showed selective cytotoxicity against SGC-7901 with IC50 values of 24.22 and 21.35 μM, respectively.
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Affiliation(s)
- Min Zhao
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Zhuo-Ma Da-Wa
- Tibet Autonomous Region Institute for Food and Drug Control, Lhasa 850000, PR China
| | - Da-Le Guo
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Dong-Mei Fang
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Xiao-Zhen Chen
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Hong-Xi Xu
- Shanghai University of Traditional Chinese Medicine, Shanghai 201203, PR China
| | - Yu-Cheng Gu
- Syngenta Jealott's Hill International Research Centre, Berkshire RG42 6EY, UK
| | - Bing Xia
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Lei Chen
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China
| | - Li-Sheng Ding
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China.
| | - Yan Zhou
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China.
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Shao YL, Zhou YQ, Li XM, Chen XZ, Gao CM, Wang L, Li Y. [One-stage tympanic cavity ventilation tube placement in canal wall down tympanomastoidectomy]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:633-636. [PMID: 29871095 DOI: 10.13201/j.issn.1001-1781.2016.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Indexed: 11/12/2022]
Abstract
Objective:To research the clinical application of tympanic cavity ventilation tube placement in canal wall down tympanomastoidectomy. Method:There were 52 patients with otitis media received canal wall down tympanomastoidectomy. We placed ventilation tube in posterior hypotympanum during the surgery. After surgery, all patients were followed up in 12 days, 1 month, 2 months, 6 months, and 1 year. The ventilation tubes were withdrew 6 months later, and then the hearing level and tympanic cavity status was evaluated after another half year. Result:All cases were followed up at least 1 year after surgery. Forty-four patients' tubes were removed 6 months later, but other 8 tubes had been extruded within 1 to 3 months. After 1 year, all 52 cases of ears were dry; 39 patients' tympanic membranes were stable, the postoperative complications included tympanic membrane retraction in 7 cases, middle ear effusion in 4 cases, and tympanic membrane perforation at anterior-inferior quadrant in 2 cases; CT examination indicated that 39 patients' aeration between tympanic cavity and Eustachian tube bony portion was normal, 9 patients' tympanic cavity aeration was smaller, and 4 patients' cavity was obstructed; 52 patients' average air conduction thresholds were 12.5 dB lower than that of preoperation. Conclusion:One-stage tympanic cavity ventilation tube placement is a simple, safe and effective method in canal wall down tympanomastoidectomy for middle ear diseases with Eustachian tube severe stenosis or obstruction in bony portion.
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Affiliation(s)
- Y L Shao
- Department of Otolaryngology Head and Neck Surgery, Bethune International Peace Hospital, Shijiazhuang, 050082, China
| | - Y Q Zhou
- Department of Otolaryngology Head and Neck Surgery, Bethune International Peace Hospital, Shijiazhuang, 050082, China
| | - X M Li
- Department of Otolaryngology Head and Neck Surgery, Bethune International Peace Hospital, Shijiazhuang, 050082, China
| | - X Z Chen
- Department of Otolaryngology Head and Neck Surgery, Bethune International Peace Hospital, Shijiazhuang, 050082, China
| | - C M Gao
- Department of Otolaryngology Head and Neck Surgery, Bethune International Peace Hospital, Shijiazhuang, 050082, China
| | - L Wang
- Department of Otolaryngology Head and Neck Surgery, Bethune International Peace Hospital, Shijiazhuang, 050082, China
| | - Y Li
- Department of Otolaryngology Head and Neck Surgery, Bethune International Peace Hospital, Shijiazhuang, 050082, China
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Xiang SK, Li JM, Huang H, Feng C, Ni HL, Chen XZ, Wang BQ, Zhao KQ, Hu P, Redshaw C. para-Selective CH Amidation of Simple Arenes with Nitriles. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500651] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Chen XZ, Fang Y, Shi YH, Cui JH, Li LY, Xu YC, Ling B. Deciphering the spectrum of somatic mutations in the entire mitochondrial DNA genome. Genet Mol Res 2015; 14:4331-7. [PMID: 25966205 DOI: 10.4238/2015.april.30.5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The mitochondrion is a crucial intracellular organelle responsible for regulating cellular energy metabolism, producing free radicals, initiating and executing the apoptotic pathways. Previous studies have shown that somatic mutations in mitochondrial DNA are associated with various tumors, which may be involved during carcinogenesis and tumor progression. To examine the mutation pattern in cancer, 625 reported somatic mutations in the mitochondrial DNA genome were analyzed. We found that, except for deletions and insertions, most somatic mutations were point mutations, accounting for 89.44% of somatic mutations. Transition was the predominant form of somatic mutation in the entire mitochondrial DNA genome, accounting for 87.12% of point mutations, most of which were homoplastic. Frequency statistics analysis of point mutations indicated that, except for 3 tRNA genes, the mutations were distributed on all resting genes and in the D-loop region, with the latter showing the highest frequency of somatic mutation (19.34%), followed by the tRNA leucine 2 gene and non-coding regions between base pairs 5892 and 5903, while 13 coding-region genes and 2 rRNA genes showed a relatively lower frequency of somatic point mutations. Nonsynonymous mutations and terminal amino acid changes were the primary point somatic mutations detected from 13 coding-region genes, which may cause mitochondrial dysfunction in cancer cells. We found that the somatic mutations may affect the mitochondrial DNA genome; the non-coding region should be examined to identify somatic mutations as potential diagnostic biomarkers for early detection of cancer.
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Affiliation(s)
- X Z Chen
- Department of Intensive Care Unit, The Second People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
| | - Y Fang
- Department of Anesthesiology, The First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, China
| | - Y H Shi
- Department of Clinical Laboratory, Shanxi Tumor Hospital, Taiyuan, Shanxi, China
| | - J H Cui
- Department of Anatomy, Medical Training Center of Shenyang Command, PLA, Dalian, Liaoning, China
| | - L Y Li
- Department of Cardiology and Clinical Laboratory, 211 Hospital of PLA, Harbin, Heilongjiang, China
| | - Y C Xu
- Department of Cardiology and Clinical Laboratory, 211 Hospital of PLA, Harbin, Heilongjiang, China
| | - B Ling
- Department of Intensive Care Unit, The Second People's Hospital of Yunnan Province, Kunming, Yunnan Province, China
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Hong GL, Chen XZ, Liu Y, Liu YH, Fu X, Lin SB, Zhu Q. Genetic variations in MOV10 and CACNB2 are associated with hypertension in a Chinese Han population. Genet Mol Res 2013; 12:6220-7. [PMID: 24338417 DOI: 10.4238/2013.december.4.9] [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
Human hypertension is a complex, multifactorial disease. Multiple variants associated with hypertension have been identified in the large numbers of genome-wide association studies, meta-analysis, and case-control studies. The present study investigated the association between the single nucleotide polymorphisms (SNPs) of five candidate genes and the susceptibility and prognosis of hypertension in a Chinese Han population. A hospital-based case-control study in a Chinese Han population was carried out, including 500 hypertension patients and 506 healthy controls. The five SNP markers were detected using the Sequenom MassArray(®) iPLEX System. The association of genotypes with susceptibility to hypertension was analyzed using odds ratio, with 95% confidence interval and logistic regression. All five variants conformed to Hardy-Weinberg proportions in the controls. No significant differences were noted in the genotype distributions for AGTR1, PRRC2A, and CALCA polymorphisms in patients with hypertension (N = 500) and healthy controls (N = 506). SNP rs2932538, a variant in MOV10, was found to be significantly associated with an increased risk of hypertension. However, SNP rs4373814, a variant in CACNB2, showed a relevant association with a decreased risk of hypertension. In conclusion, the results of our case-control study confirmed the significant association of the SNP rs2932538 in MOV10 and SNP rs4373814 in CACNB2 with an increased risk of hypertension in a Chinese Han population, suggesting that the SNP rs2932538 may be a poor prognostic indicator for hypertension, while SNP rs4373814 may be a good prognostic indicator for hypertension in the same region. However, our findings need to be replicated in larger epidemiological and functional studies.
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Affiliation(s)
- G L Hong
- Department of Laboratory Medicine, The Fuzhou Second Affiliated Hospital of Xiamen University, Fujian, China
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Affiliation(s)
- K Yang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China
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Xiang S, Hu H, Ma J, Li Y, Wang B, Feng C, Zhao K, Hu P, Chen X. Synthesis of naphthalene derivatives through inexpensive BF3·Et2O-catalyzed annulation reaction of arylacetaldehydes with arylalkynes. Sci China Chem 2013. [DOI: 10.1007/s11426-013-4843-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Wu ZJ, Huo JL, Chen JZ, Li N, Fang DM, Chen XZ, Zhang GL, Wang JH, Xu XY. Evaluation of relative isotopic abundance measurements in a quadrupole time-of-flight mass spectrometer for elemental composition determination of natural products in traditional Chinese medicine. Eur J Mass Spectrom (Chichester) 2013; 19:91-102. [PMID: 24261081 DOI: 10.1255/ejms.1219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The relative isotopic abundance (RIA) measurement errors of a quadrupole time-of-flight (Q-ToF) instrument incorporating analog-to-digital converter detectors were systemically evaluated by stochastically collecting about 200 data in positive ion mass spectrometry (MS) mode. Errors varied with peak intensities at definite spectral acquisition rates but were very close, even if peak intensities changed sharply at different spectral acquisition rates with the same concentration. Intensity thresholds were systematically defined at 1 Hz of spectral acquisition rates. RIA measurement errors were also evaluated using peak area. It seemed that peak area was better adapted for the high-intensity ions while peak intensity was suited for very low-intensity ions. Several known compounds were selected for RIA measurements for product ions in tandem mass spectropmetry (MS/MS) mode. An extract of a representative traditional Chinese medicinal, Paederia scandens was analyzed with high-performance liquid chromatography-electrospray ionization-QToF-MS/MS. The unique elemental compositions of some compounds could not be identified even with exact masses and MS/MS spectra of measured and reference compounds. RIA errors, especially of (M+2)M(-1), provided vital information for determining the elemental composition.
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Affiliation(s)
- Zhi-Jun Wu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China.
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Xie ZL, Zhang TF, Chen XZ, Li GD, Zhang JG. Effects of maturity stages on the nutritive composition and silage quality of whole crop wheat. Asian-Australas J Anim Sci 2012; 25:1374-80. [PMID: 25049492 PMCID: PMC4093009 DOI: 10.5713/ajas.2012.12084] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 06/24/2012] [Accepted: 05/15/2012] [Indexed: 11/27/2022]
Abstract
The changes in yields and nutritive composition of whole crop wheat (Triticum aestivum L.) during maturation and effects of maturity stage and lactic acid bacteria (LAB) inoculants on the fermentation quality and aerobic stability were investigated under laboratory conditions. Whole crop wheat harvested at three maturation stages: flowering stage, milk stage and dough stage. Two strains of LAB (Lactobacillus plantarum: LAB1, Lactobacillus parafarraqinis: LAB2) were inoculated for wheat ensiling at 1.0×105 colony forming units per gram of fresh forage. The results indicated that wheat had higher dry matter yields at the milk and dough stages. The highest water-soluble carbohydrates content, crude protein yields and relative feed value of wheat were obtained at the milk stage, while contents of crude fiber, neutral detergent fiber and acid detergent fiber were the lowest, compared to the flowering and dough stages. Lactic acid contents of wheat silage significantly decreased with maturity. Inoculating homofermentative LAB1 markedly reduced pH values and ammonia-nitrogen (NH3-N) content (p<0.05) of silages at three maturity stages compared with their corresponding controls. Inoculating heterofermentative LAB2 did not significantly influence pH values, whereas it notably lowered lactic acid and NH3-N content (p<0.05) and effectively improved the aerobic stability of silages. In conclusion, considering both yields and nutritive value, whole crop wheat as forage should be harvested at the milk stage. Inoculating LAB1 improved the fermentation quality, while inoculating LAB2 enhanced the aerobic stability of wheat silages at different maturity stages.
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Chen XZ, Yin XM, Ai L, Chen Q, Li SW, Dai JP. Differentiation between brain glioblastoma multiforme and solitary metastasis: qualitative and quantitative analysis based on routine MR imaging. AJNR Am J Neuroradiol 2012; 33:1907-12. [PMID: 22743640 DOI: 10.3174/ajnr.a3106] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The differentiation between cerebral GBM and solitary MET is clinically important and may be radiologically challenging. Our hypothesis is that routine MR imaging with qualitative and quantitative analysis is helpful for this differentiation. MATERIALS AND METHODS Forty-five GBM and 21 solitary metastases were retrospectively identified, with their preoperative routine MR imaging analyzed. According to the comparison of the area of peritumoral T2 prolongation with that of the lesion, the tumors were classified into grade I (prolongation area ≤ tumor area) and grade II (prolongation area > tumor area). The signal intensities of peritumoral T2 prolongation were measured on T2WI and normalized to the values of the contralateral normal regions by calculating the ratios. The ratio (nSI) of both types of tumors was compared in grade I, grade II, and in tumors without grading. The best cutoff values to optimize the sensitivity and specificity were determined for optimal differentiation. RESULTS The nSI of GBM was significantly higher than that of MET without T2 prolongation grading (P < .001), resulting in AUC = 0.725. The difference was significant (P = .014) in grade I tumors (GBM, 38; MET, 9), with AUC = 0.741, and in grade II tumors (GBM, 7; MET, 12), with AUC = 0.869 (P = .017). Both types of tumors showed a different propensity in T2 prolongation grading (χ(2) = 12.079, P = .001). CONCLUSIONS Combined with qualitative and quantitative analysis of peritumoral T2 prolongation, routine MR imaging can help in the differentiation between brain GBM and solitary MET.
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Affiliation(s)
- X Z Chen
- Department of Neuroimaging, Beijing Tiantan Hospital, Capital Medical University, Beijing, P R China
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Wu ZJ, Sun DM, Chen JZ, Chen XZ, Fang DM, Li N, Cheng P, Zhang GL. Analysis of cipadesin limonoids from Cipadessa cinerascens using electrospray ionization quadrupole time-of-flight tandem mass spectrometry and quantum chemical calculations. Rapid Commun Mass Spectrom 2012; 26:563-571. [PMID: 22302496 DOI: 10.1002/rcm.6126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
RATIONALE Limonoids, a class of tetranortriterpenoids, exhibit various biological effects, such as insect antifeedant and growth regulating activities, antimicrobial activity, potent cell adhesion inhibitory effects, antimalarial activity, anticancer activities, and antioxidant activity. The potential application brings the need for reliable, fast and low-cost analysis of this class of compounds. METHODS Six cipadesin limonoids (1-6), including a pairs of isomers, from leaves and barks of Cipadessa cinerascens were investigated by electrospray ionization quadrupole time-of-flight tandem mass spectrometry (ESI-QTOF-MS/MS) in positive-ion mode. Characteristic processes were further studied by theoretical calculations. RESULTS 1,3-Hydrogen rearrangement might play a significant role in the cleavage of -O- bridge bond in ring B and further produces some characteristic ions. For [M + Na](+) precursor ions, the product ion at m/z 133 might indicate the structure of ring A and the losses of CO(2) and AcOH occur readily. Interestingly, the radical product ion at m/z 460 from [M + Na](+) ions seems to be the characteristic ion for compound 1. A deuterium-labeling experiment supported the processes forming the radical ion. For [M + NH(4)](+) ions, high-abundance product ions resulting from sequential loss of AcOH can be observed. In addition, a pairs of isomers was unambiguously differentiated based on MS or MS/MS spectra. CONCLUSIONS In summary, sufficient information obtained from fragmentation experiments of [M + Na](+), [M + NH(4)](+) or [M + H](+) precursor ions is especially valuable for rapid identification of these limonoids or their metabolites in complex mixtures. The high-abundance radical product ion is of scientific interest.
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Affiliation(s)
- Zhi-Jun Wu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
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Li GY, Li LM, Yang T, Chen XZ, Fang DM, Zhang GL. Four New Alkaloids, Brevianamides O - R, from the Fungus Aspergillus versicolor. Helv Chim Acta 2010. [DOI: 10.1002/hlca.201000053] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wu ZJ, Fang DM, Han D, Li GY, Chen XZ, Qi HY, Zhang GL. Analysis of sesterterpenoids from Aspergillus terreus using ESI-QTOF and ESI-IT. Phytochem Anal 2010; 21:374-383. [PMID: 20310057 DOI: 10.1002/pca.1209] [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: 05/29/2023]
Abstract
INTRODUCTION Biosynthesis of terretonin was studied due to the interesting skeleton of this series of sesterterpenoids. Very recently, López-Gresa reported two new sesterterpenoids (terretonins E and F) which are inhibitors of the mammalian mitochondrial respiratory chain. Mass spectrometry (MS), especially tandem mass spectrometry, has been one of the most important physicochemical methods for the identification of trace natural products due to it rapidity, sensitivity and low levels of sample consumption. The potential application prospect and unique skeleton prompted us to study structural characterisation using MS. OBJECTIVE To obtain sufficient information for rapid structural elucidation of this class of compounds using MS. METHODOLOGY The elemental composition of the product ions was confirmed by low-energy ESI-CID-QTOF-MS/MS analyses. The fragmentation pathways were postulated on the basis of ESI-QTOF-MS/MS/MS and ESI-IT-MS(n) spectra. Common features and major differences between ESI-QTOF-MS/MS and IT-MS(n) spectra were compared. For ESI-QTOF-MS/MS/MS experiments, capillary exit voltage was raised to induce in-source dissociation. Ammonium acetate or acetic acid were added into solutions to improve the intensity of [M + H]+. The collision energy was optimised to achieve sufficient fragmentation. Some fragmentation pathways were unambiguously proposed by the variety of abundance of fragment ions at different collision energies even without MS(n) spectra. RESULTS Fragmentation pathways of five representative sesterterpenoids were elucidated using ESI-QTOF-MS/MS/MS and ESI-IT-MS(n) in both positive- and negative-ion mode. The key group of characterising fragmentation profiles was ring B, and these fragmentation patterns are helpful to identify different types of sestertepenoids. CONCLUSION Complementary information obtained from fragmentation experiments of [M + H]+ (or [M + NH4]+ and [M-H](-) precursor ions is especially valuable for rapid identification of this kind of sesterterpenoid.
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Affiliation(s)
- Zhi-Jun Wu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
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Wu ZJ, Han D, Chen XZ, Fang DM, Qi HY, Zhang GL. Analysis of benzofuran derivatives using electrospray ionization ion trap and electrospray ionization quadrupole time-of-flight mass spectrometry. Rapid Commun Mass Spectrom 2010; 24:1211-1215. [PMID: 20301103 DOI: 10.1002/rcm.4495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
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Liao XL, Chen XZ, Yu KB, Li GY. 16- O-Methylcafestol. Acta Crystallogr Sect E Struct Rep Online 2010; 66:o760. [PMID: 21580605 PMCID: PMC2983991 DOI: 10.1107/s1600536810007920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2010] [Accepted: 03/02/2010] [Indexed: 11/10/2022]
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Wu XQ, Huang QC, Chen XZ, Li GY, Zhang GL. (3S,NR)-3-Hydroxy-methyl-2-methyl-2-(3-methyl-but-2-en-1-yl)-1,2,3,4-tetra-hydro-isoquinolinium bromide-1,1'-bi-2-naphthol (1/1). Acta Crystallogr Sect E Struct Rep Online 2010; 66:o768. [PMID: 21580612 PMCID: PMC2984017 DOI: 10.1107/s1600536810007944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Accepted: 03/02/2010] [Indexed: 11/24/2022]
Abstract
In the title compound, C16H24NO+·Br−·C20H14O2, the N-heterocyclic six-membered ring assumes a half-chair conformation. The two naphthalene ring systems are nearly perpendicular to one another, making a dihedral angle of 89.5 (2)°. Intermolecular O—H⋯Br hydrogen bonding helps to stabilize the crystal structure.
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Wu ZJ, Chen XZ, Fang DM, Qi HY, Ren WJ, Zhang GL. Analysis of phenolic glycosides from Ilex litseaefolia using electrospray ionization quadrupole time-of-flight mass spectrometry. Rapid Commun Mass Spectrom 2009; 23:3881-3885. [PMID: 19902421 DOI: 10.1002/rcm.4317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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Li GY, Yang T, Luo YG, Chen XZ, Fang DM, Zhang GL. Brevianamide J, A New Indole Alkaloid Dimer from FungusAspergillus versicolor. Org Lett 2009; 11:3714-7. [DOI: 10.1021/ol901304y] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wu HF, Lin WB, Xia LZ, Luo YG, Chen XZ, Li GY, Zhang GL, Pan XF. ‘N-Stereogenic Quaternary Ammonium Salts’ from L-Amino Acids: Synthesis, Separation, and Absolute Configuration. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200800326] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
BACKGROUND It is well known that intrathecal opioids have a synergic effect with spinal local anaesthetics. The aim of this study was to evaluate whether low-dose ropivacaine in combination with sufentanil could produce effective spinal anaesthesia with less maternal hypotension and vomiting than ropivacaine alone. METHODS 80 ASA I and II parturients undergoing elective caesarean delivery under combined spinal-epidural anaesthesia were randomly allocated to two groups. Group R15 received intrathecal hyperbaric ropivacaine 15 mg and group SR10 hyperbaric ropivacaine 10 mg with sufentanil 5 micrograms. Characteristics, efficacy and side effects of spinal anaesthesia in each group were measured. RESULTS There was no significant difference in the quality of intraoperative analgesia and muscle relaxation between groups. The incidence of hypotension was significantly higher (55% vs. 20%, P < 0.005) and the need for ephedrine less in group R15 than in group SR10. In group SR10, the onset of motor block was delayed (2.9 +/- 1.1 vs. 4.6 +/- 2.5 min, P < 0.005), the duration was shorter (65.9 +/- 15.1 vs. 125.4 +/- 26.4 min, P < 0.005). The duration of effective analgesia was longer (260 +/- 32.5 vs. 143 +/- 22.1 min, P < 0.005), the incidence of shivering (20% vs. 60%, P < 0.005) and vomiting (5% vs. 30%, P < 0.005) were lower in group SR10. CONCLUSIONS The combination of hyperbaric ropivacaine 10 mg with sufentanil 5 lg produced effective spinal anaesthesia for caesarean delivery with significantly less hypotension, vomiting and shivering, shorter duration of motor blockade and longer lasting analgesia than hyperbaric ropivacaine 15 mg.
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Affiliation(s)
- X W Qian
- Department of Anaesthesia, Women's Hospital, School of Medicine, Zhejiang University, PR China
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