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Liu DS, Wang YX, Rexiti P. [Progress in minimally invasive surgery for adjacent segment disease after lumbar fusion]. Zhonghua Wai Ke Za Zhi 2023; 61:722-727. [PMID: 37400215 DOI: 10.3760/cma.j.cn112139-20230220-00074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 07/05/2023]
Abstract
Adjacent segment disease (ASDis) is a common complication of posterior lumbar spine fusion and often requires surgical treatment. In the treatment of ASDis, percutaneous spinal endoscopy can be used for simple decompression without removal of the original internal fixation, or for posterior fixation and fusion under the scope or in combination with other access fixation and fusion techniques, with the advantages of less surgical trauma, less bleeding, and faster postoperative recovery. Traditional trajectory screw technique is one of the risk factors for adjacent segment degeneration because of its tendency to cause damage to the adjacent synovial joint during surgery. In contrast, the cortical tone trajectory (CBT) screw placement technique not only reduces the damage to the articular joint during the screw placement process, but also preserves the original internal fixation in the treatment of ASDis, which significantly reduces the surgical trauma. Secondly, the implantation of CBT screws with the aid of digital technologies such as three-dimentinal printed guides, CT navigation, and robotics allows for more precise "double nailing" of ASDis patients to complete the fusion of adjacent segments, and is a minimally invasive procedure to be considered for patients who meet the clinical indications for fusion. This article reviews the literature on the use of percutaneous spinal endoscopy and CBT in the surgical management of ASDis.
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Affiliation(s)
- D S Liu
- Department of Spinal Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Y X Wang
- Xinjiang Medical University, Urumqi 830054, China
| | - Paerhati Rexiti
- Department of Spinal Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
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Grishin MY, Sdvizhenskii PA, Asyutin RD, Tretyakov RS, Stavertiy AY, Pershin SM, Liu DS, Lednev VN. Combining thermal imaging and spectral pyrometry for express temperature mapping in additive manufacturing. Appl Opt 2023; 62:335-341. [PMID: 36630231 DOI: 10.1364/ao.478113] [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] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
A compact and low-cost two-dimensional (2D) thermal imager was developed for real-time temperature mapping of a melt pool during coaxial laser cladding (the additive manufacturing technique). The device combines a color CMOS camera and a compact spectrometer. The spectrometer was utilized for internal calibration and validation of a 2D temperature map that was acquired by the CMOS camera. The remarkable feature of the thermal imager is that camera images are calibrated directly during the measurement process utilizing spectral pyrometry. Additionally, the spectrometer decreased a potential systematic error due to a spectrum contribution from atomic/ionic lines emission. The spectral pyrometry provided temperature accuracy measurements of ±23K while two-dimensional (2D) temperature mapping by two-color pyrometry accuracy was estimated as ±38K in the range of 1700-3500 K. The system has been installed at a coaxial laser cladding head for real-time temperature mapping. The system was developed for measuring a melt pool during laser cladding production of a high wear-resistant coating (tungsten carbide particles in a nickel matrix). Tungsten carbides powder flow rate has been changed sequentially from 5 to 27 g/min by powder feeder programming, which resulted in a variation of melt pool dimensions and temperature maps during the cladding process.
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Teng PK, Han XD, Liu YZ, Zhao WY, Liu DS, Liu XD. [Clinical characteristics and outcome analysis of COVID-19 patients with pulmonary tuberculosis]. Zhonghua Jie He He Hu Xi Za Zhi 2022; 45:510-514. [PMID: 35527467 DOI: 10.3760/cma.j.cn112147-20220122-00416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Coronavirus disease (COVID-19) and tuberculosis (TB) are two respiratory infectious diseases with a high incidence of transmission, mainly via respiratory droplets and both can weaken the immune system and lower the number of CD4+T cells in patients. COVID-19 can occur before, at the same time or after the diagnosis of TB. Patients with pulmonary TB are more likely to have co-infection when they have a history of epidemiological exposure to COVID-19. At present, many cases of nosocomial infection of COVID-19 caused by ineffective prevention and control measures in tuberculosis hospitals have been reported successively at domestic and overseas. Therefore, it is urgent to strengthen the prevention and control of nosocomial infections in tuberculosis hospitals. The superposition of the two diseases can lead to a worsening prognosis, aggravating the patient's condition and making treatment more difficult. In addition, in the context of the new coronavirus epidemic, early recognition of co-infection with new coronavirus should be made when TB patients in chest hospitals present with symptoms such as aggregated fever or progressive disease. At the same time, we should focus on identifying the clinical and imaging manifestations of TB and COVID-19 co-infection. At present, research on COVID-19 complicated with pulmonary TB is scarce, and there are disputes on many aspects. As a country with a high prevalence of tuberculosis, it is of great practical significance to identify the clinical characteristics, outcomes, and treatment of the two infectious diseases in China.
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Affiliation(s)
- P K Teng
- Department of Respiratory and Critical Care Medicine, Qingdao Municipal Hospital, Qingdao 266011, China
| | - X D Han
- Department of Respiratory and Critical Care Medicine, Qingdao Municipal Hospital, Qingdao 266011, China
| | - Y Z Liu
- Department of Respiratory and Critical Care Medicine, Qingdao Municipal Hospital, Qingdao 266011, China
| | - W Y Zhao
- Department of Respiratory and Critical Care Medicine, Qingdao Municipal Hospital, Qingdao 266011, China
| | - D S Liu
- Department of Respiratory and Critical Care Medicine, Qingdao Municipal Hospital, Qingdao 266011, China
| | - X D Liu
- Department of Respiratory and Critical Care Medicine, Qingdao Municipal Hospital, Qingdao 266011, China
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Cong JC, Cui MM, Liu DS, Zhang H, Chen CS. [Evaluation of anorectal function after transanal total mesorectal excision and discussion of related problems]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:1024-1027. [PMID: 34823304 DOI: 10.3760/cma.j.cn441530-20200824-00496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Liu DS, Zhang H. [Problem of the carbon dioxide embolism during the procedure of transanal total mesorectal excision]. Zhonghua Wei Chang Wai Ke Za Zhi 2019; 22:1110-1114. [PMID: 31874524 DOI: 10.3760/cma.j.issn.1671-0274.2019.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Carbon dioxide embolization is a special complication of laparoscopic colorectal surgery. It is rarely reported in conventional laparoscopic colorectal surgery, and has not been well recognized by surgeons. Transanal total mesorectal excision (taTME) is an increasingly popular sphincter-preserving surgery for low rectal cancer in recent years. Although the number of cases worldwide is not large, carbon dioxide embolization after operation has been reported successively. Once serious carbon dioxide embolization occurs, the mortality is extremely high. The main related factors of carbon dioxide embolization in taTME include high pressure of pneumoperitoneum, narrow space, abundant blood supply of prostate and vaginal wall, Trendelenburg position, etc. The key of prevention and treatment is to pay attention to the control of related risk factors, identify the early signs of carbon dioxide embolism, and take active and effective symptomatic treatment. Reducing the pressure of pneumoperitoneum perfusion can reduce the occurrence of CO2 embolism. Transesophageal echocardiography is the most sensitive way to monitor intravenously CO2, but it is difficult to carry out in clinical practice. The sudden decrease of end expiratory CO2 partial pressure is an important sign of early detection of CO2 embolism. If there is a suspicious lacuna in the operation, it is possible to reduce or stop the pneumoperitoneum when it is unable to distinguish between normal tissue gap or vascular lumen. If the "bubble sign" is observed, CO2 may enter the vein. The risk of venous embolism should be considered.
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Affiliation(s)
- D S Liu
- Department of Colorectal Tumor Surgery, Shengjing Hospital, China Medical University, Shenyang 110004, China
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Jiang BL, Lin Y, Wang ML, Liu DS, Xu BH, Zhang SJ. Cobalt-catalyzed direct transformation of aldehydes to esters: the crucial role of an enone as a mediator. Org Chem Front 2019. [DOI: 10.1039/c8qo01298a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An oxidative esterification of aldehydes with alkanols catalyzed by an in situ generated low-valent cobalt system has been developed using an enone as a mild oxidant.
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Affiliation(s)
- Biao-Lin Jiang
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
- Beijing Key Laboratory of Ionic Liquids Clean Process
| | - Yang Lin
- Beijing Key Laboratory of Ionic Liquids Clean Process
- Key Laboratory of Green Process and Engineering
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Meng-Liang Wang
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Dian-Sheng Liu
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- China
| | - Bao-Hua Xu
- Beijing Key Laboratory of Ionic Liquids Clean Process
- Key Laboratory of Green Process and Engineering
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
| | - Suo-Jiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process
- Key Laboratory of Green Process and Engineering
- State Key Laboratory of Multiphase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
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7
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Guo YM, Huo JL, Qu R, Hu XC, Liu DS, Chen ZY, Hong W. [A comparison of fine needle nonaspiration cytology versus fine needle aspiration for thyroid nodules: a Meta-analysis]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:868-872. [PMID: 29921061 DOI: 10.13201/j.issn.1001-1781.2018.11.017] [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: 02/23/2018] [Indexed: 11/12/2022]
Abstract
Objective:To evaluate the differences of smear quality and diagnostic accuracy between thyroid nodules and fine needle nonaspiration cytology (FNNAC) and fine needle aspiration cytology (FNAC).Method:Databases were used to search the literature on FNNAC and FNAC. All statistical analyses were performed using Review Manager 5.3 Software.Result:A total of 10 studies were included in the study. Meta-analysis showed no significant difference in FNNAC and FNAC between low, middle and high quality smears. There was no significant difference in diagnostic accuracy.Conclusion:There were no difference in obtaining the smear quality and diagnostic accuracy, the person doing the piercing can freely choose which way according to the habit.
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Affiliation(s)
- Y M Guo
- Department of Breast and Thyroid Surgery, the Third Affiliated Hospital of Zunyi Medical College, Zunyi, 563000, China
| | - J L Huo
- Department of Breast and Thyroid Surgery, the Third Affiliated Hospital of Zunyi Medical College, Zunyi, 563000, China
| | - R Qu
- Department of Breast and Thyroid Surgery, the Third Affiliated Hospital of Zunyi Medical College, Zunyi, 563000, China
| | - X C Hu
- Department of Breast and Thyroid Surgery, the Third Affiliated Hospital of Zunyi Medical College, Zunyi, 563000, China
| | - D S Liu
- Department of Breast and Thyroid Surgery, the Third Affiliated Hospital of Zunyi Medical College, Zunyi, 563000, China
| | - Z Y Chen
- Department of Breast and Thyroid Surgery, the Third Affiliated Hospital of Zunyi Medical College, Zunyi, 563000, China
| | - W Hong
- Department of Breast and Thyroid Surgery, the Third Affiliated Hospital of Zunyi Medical College, Zunyi, 563000, China
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Tog C, Liu DS, Lim HK, Stiven P, Thompson SK, Watson DI, Aly A. Risk factors for delayed gastric emptying following laparoscopic repair of very large hiatus hernias. BJS Open 2017; 1:75-83. [PMID: 29951609 PMCID: PMC5989959 DOI: 10.1002/bjs5.11] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [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: 05/27/2017] [Accepted: 06/28/2017] [Indexed: 01/20/2023] Open
Abstract
Background Delayed gastric emptying can complicate surgery for hiatus hernia. The aim of this study was to quantify its incidence following laparoscopic repair of very large hiatus hernias, identify key risk factors for its occurrence and determine its impact on clinical outcomes. Methods Data collected from a randomized trial of patients who underwent laparoscopic mesh versus sutured repair of very large hiatus hernias (more than 50 per cent of stomach in chest) were analysed retrospectively. Delayed gastric emptying was defined as endoscopic evidence of solid food in the stomach after fasting for 6 h at 6 months after surgery. Results Delayed gastric emptying occurred in 19 of 102 patients (18·6 per cent). In univariable analysis, type 2 paraoesophageal hernia (relative risk (RR) 3·15, 95 per cent c.i. 1·41 to 7·06), concurrent anterior and posterior hiatal repair (RR 2·66, 1·14 to 6·18), hernia sac excision (RR 4·85, 1·65 to 14·24), 270°/360° fundoplication (RR 3·64, 1·72 to 7·68), division of short gastric vessels (RR 6·82, 2·12 to 21·90) and revisional surgery (RR 3·69, 1·73 to 7·87) correlated with delayed gastric emptying. In multivariable analysis, division of short gastric vessels (RR 6·27, 1·85 to 21·26) and revisional surgery (RR 6·19, 1·32 to 28·96) were independently associated with delayed gastric emptying. Delayed gastric emptying correlated with adverse gastrointestinal symptomatology, including higher rates of bloating, nausea, vomiting and anorexia, as well as reduced patient satisfaction with the operation and recovery. Conclusion Delayed gastric emptying following large hiatus hernia repair is common and associated with adverse symptoms and reduced patient satisfaction. Division of short gastric vessels and revisional surgery were independently associated with its occurrence.
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Affiliation(s)
- C Tog
- Department of Surgery Austin Hospital Heidelberg Victoria Australia
| | - D S Liu
- Department of Surgery Austin Hospital Heidelberg Victoria Australia.,Division of Cancer Surgery Peter MacCallum Cancer Centre Melbourne Victoria Australia
| | - H K Lim
- Department of Surgery Austin Hospital Heidelberg Victoria Australia
| | - P Stiven
- Department of Surgery Austin Hospital Heidelberg Victoria Australia
| | - S K Thompson
- University of Adelaide Discipline of Surgery Royal Adelaide Hospital Adelaide South Australia Australia
| | - D I Watson
- Flinders University Department of Surgery Flinders Medical Centre Bedford Park South Australia Australia
| | - A Aly
- Department of Surgery Austin Hospital Heidelberg Victoria Australia
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Huo JL, Guo YM, Qu R, Liu DS, Chen ZY, Hong W. [Diagnostic accuracy and safety of US-guided core needle biopsy versus fine needle aspiration biopsy of thyroid nodules: a Meta analysis]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1103-1107. [PMID: 29798251 DOI: 10.13201/j.issn.1001-1781.2017.14.013] [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: 03/22/2017] [Indexed: 11/12/2022]
Abstract
Objective:To evaluate the efficacy and safety of core needle biopsy (CNB) and fine neon needle aspiration biopsy (FNAB) in the diagnosis of thyroid nodules.Method:The CNKI, Wanfang database, China Biomedical Literature Database (CBM), PubMed, Cochrane Library, EMBASE, Web of Science database (the deadline of February 2017) were used to search the literature on CNB and FNABCNB. Two reviewers independently screened the literature according to the inclusion and exclusion criteria, extracted the data and evaluated the quality of the literature, and used RevMan 5.3 software for Meta analysis.Result:The accuracy of the CNB group was higher than that of the FNAB group(RR= 1.14, 95%CI: 1.06-1.22, P< 0.01). Meta analysis showed that the accuracy of CNB group compared with FNAB group was statistically significant the difference was statistically significant. There was no significant difference between the two groups (RR= 0.92, 95%CI:0.67-1.25, P> 0.05).Conclusion:CNB is safe and feasible in the diagnosis of thyroid nodules under the condition of mastery of puncture technique.
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Affiliation(s)
- J L Huo
- Department of Breast and Thyroid Surgery, the First People's Hospital of Zunyi, Zunyi, 563000, China
| | - Y M Guo
- Department of Breast and Thyroid Surgery, the First People's Hospital of Zunyi, Zunyi, 563000, China
| | - R Qu
- Department of Breast and Thyroid Surgery, the First People's Hospital of Zunyi, Zunyi, 563000, China
| | - D S Liu
- Department of Breast and Thyroid Surgery, the First People's Hospital of Zunyi, Zunyi, 563000, China
| | - Z Y Chen
- Department of Breast and Thyroid Surgery, the First People's Hospital of Zunyi, Zunyi, 563000, China
| | - W Hong
- Department of Breast and Thyroid Surgery, the First People's Hospital of Zunyi, Zunyi, 563000, China
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Li W, Bai SD, Su F, Duan XE, Liu DS. Synthesis, Characterization, and Magnetic Properties of Iron Complexes Bearing Polydentate Nitrogen Ligands. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Wei Li
- Institute of Molecular Science; 030006 Taiyuan P. R. China
- Institute of Applied Chemistry; Shanxi University; 030006 Taiyuan P. R. China
| | - Sheng-Di Bai
- Institute of Applied Chemistry; Shanxi University; 030006 Taiyuan P. R. China
| | - Feng Su
- Department of Chemistry; Changzhi University; 46011 Changzhi P. R. China
| | - Xin-E Duan
- Institute of Applied Chemistry; Shanxi University; 030006 Taiyuan P. R. China
- School of Chemistry and Chemical Engineering; Shanxi University; 030006 Taiyuan P. R. China
| | - Dian-Sheng Liu
- Institute of Applied Chemistry; Shanxi University; 030006 Taiyuan P. R. China
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He YC, Pan JG, Liu DS. Structural study of the novel deuterated calix[4]pyrrole complex d
12- meso-tetrakis(4-methoxyphenyl)- meso-tetramethylcalix[4]pyrrole–pyridine N-oxide–acetonitrile (1/1/1). Acta Crystallogr C 2017; 73:254-258. [DOI: 10.1107/s2053229617001309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 01/25/2017] [Indexed: 11/10/2022] Open
Abstract
Calix[4]pyrroles act as powerful receptors for electron-rich neutral guests and anionic guests in organic solvents. For the electron-rich neutral guest pyridine N-oxide, calix[4]pyrrole, with a deep cavity, provides an appropriate environment. The ability of calix[4]pyrrole to host binding guest molecules is the result of hydrogen bonding, π–π, C—H...π and hydrophobic interactions of the cavity. The novel title complex, C52H40D12N4O4·C5H5NO·C2H3N, based on d
12-meso-tetrakis(4-methoxyphenyl)-meso-tetramethylcalix[4]pyrrole, has been assembled using an excess of pyridine N-oxide and is the first deuterated complex of calix[4]pyrrole. A single-crystal X-ray study shows that the receptor adopts a cone conformation with the N-oxide fragment encapsulated deep within the cavity. 1H NMR spectroscopy was used to probe the molecular binding formation in CD3CN. The results are consistent with the single-crystal X-ray study in identifying that the pyridine N-oxide molecule occupies the cavity of the calix[4]pyrrole molecule. UV–vis spectroscopy revealed that the calix[4]pyrrole receptor molecules are able to form 1:1 inclusion complexes in CH3CN.
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Duan XE, Li R, Tong HB, Li YQ, Bai SD, Guo YJ, Liu DS. Synthesis and structural characterization of electrochemically reversible bisferrocenes containing bis(acyl-thiourea)s: enantiomers and conformers. NEW J CHEM 2017. [DOI: 10.1039/c6nj03539f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Enantiomeric and conformational isomers of chiral bisferrocenyl-modified bis(acyl-thiourea)s; their crystal packing and electrochemically reversible redox reaction properties.
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Affiliation(s)
- Xin-E Duan
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan
- P. R. China
| | - Rui Li
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan
- P. R. China
- Institute of Applied Chemistry
| | - Hong-Bo Tong
- Institute of Applied Chemistry
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Ying-Qi Li
- School of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan
- P. R. China
| | - Sheng-Di Bai
- Institute of Applied Chemistry
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Yu-Jing Guo
- Institute of Environmental Science
- Shanxi University
- Taiyuan 030006
- P. R. China
| | - Dian-Sheng Liu
- Institute of Applied Chemistry
- Shanxi University
- Taiyuan 030006
- P. R. China
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Li W, Bai SD, Su F, Yuan SF, Duan XE, Liu DS. Zirconium complexes based on an ethylene linked amidinate–amido ligand: synthesis, characterization and ethylene polymerization. NEW J CHEM 2017. [DOI: 10.1039/c6nj02537d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Monomer/dimer zirconium complexes 4–6 were synthesized by changing the molar ratio of ZrCl4 : ligand. The catalytic behaviors of these zirconium complexes were investigated in the presence of MAO as a cocatalys.
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Affiliation(s)
- Wei Li
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- People's Republic of China
- Research Institute of Applied Chemistry
| | - Sheng-Di Bai
- Research Institute of Applied Chemistry
- Shanxi University
- Taiyuan
- People's Republic of China
| | - Feng Su
- Department of Chemistry
- Changzhi University
- Changzhi 046011
- People's Republic of China
| | - Shi-Fang Yuan
- Research Institute of Applied Chemistry
- Shanxi University
- Taiyuan
- People's Republic of China
| | - Xin-E Duan
- Research Institute of Applied Chemistry
- Shanxi University
- Taiyuan
- People's Republic of China
| | - Dian-Sheng Liu
- Research Institute of Applied Chemistry
- Shanxi University
- Taiyuan
- People's Republic of China
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14
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Zhang W, Wu Y, Gong L, Zhu HL, Huang GC, Zhou GQ, Wu KF, Liu DS. [Therapeutic effect of IGF-1R-targeting inhibitor (TAE226) on malignant pleural effusion in nude mice]. Zhonghua Zhong Liu Za Zhi 2016; 38:565-71. [PMID: 27531475 DOI: 10.3760/cma.j.issn.0253-3766.2016.08.002] [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 study the therapeutic effect of IGF-1R inhibitor TAE226 on malignant pleural effusion (MPE) in nude mice. METHODS Human lung carcinoma A549 cells were injected into the pleural cavity of nude mice to establish MPE model. The mice were randomly divided into model group and treatment group, and were orally administered with distilled water and TAE226 (20 mg/kg) in the same volume, respectively. The volume of pleural effusion and tumor weight of the two groups were observed. HE staining was used to reveal the histological changes and enzyme-linked immunosorbent assay (ELISA) was used to detect the IGF-1R protein expression. IGF-1R mRNA level in the tumor tissue was determined by RT-PCR. Microvessel density (MVD) and cell proliferation index (PI) were assessed by immunohistochemical analysis. The protein expression levels of IGF-1R, p-IGF-1R, PI3K and p-PI3K in the tumor tissue were determined by Western blotting. RESULTS The volumes of pleural effusion were (241.4±89.7) μl and (121.7±78.8) μl in the model and treatment groups, respectively (P<0.05). The tumor weight of treatment group was (316.7±186.3) mg, significantly lower than that of the model group (671.4±281.4) mg (P<0.05). RT-PCR analysis showed that IGF-1R mRNA level was 0.914±0.029 in the treatment group, significantly lower than that of the model group (1.152±0.037, P<0.01). The ELISA data revealed that IGF-1R protein expression level of the model group was significantly higher than that of the treatment group [(41.0±4.7) μg/L vs. (24.0±3.1) μg/L, P<0.01]. Immunohistochemical analysis showed that there were significant differences between MVD and PI in the model and treatment groups [MVD, 34.75±3.49 vs. 22.25±3.63; PI, (75.25±7.15)% vs. (45.75±5.12)%; P<0.01 for both). Western blot data showed that IGF-1R and PI3K protein expression levels were not significantly different between the model and treatment groups (1.03±0.33 vs. 0.98±0.37 and 1.05±0.28 vs. 0.98±0.19), respectively (P>0.05), but p-IGF-1R and p-PI3K protein expression levels had significant differences between the two groups (1.08±0.10 vs. 0.51±0.08 and 1.12±0.09 vs. 0.86±0.09), respectively (P<0.01 for both). CONCLUSIONS The IGF-1R inhibitor can effectively inhibit the formation of malignant pleural effusion. Its mechanism may be related to the suppression of tumor cell proliferation, invasion and angiogenesis through inhibition of PI3K signaling. TAE226 treatment may be a potential therapeutic regimen of treating malignant pleural effusion.
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Affiliation(s)
- W Zhang
- Department of Respiratory Medicine, the First People's Hospital of Zunyi, Zunyi 563000, China
| | - Y Wu
- Department of Respiratory Medicine, the First People's Hospital of Zunyi, Zunyi 563000, China
| | - L Gong
- Department of Respiratory Medicine, the First People's Hospital of Zunyi, Zunyi 563000, China
| | - H L Zhu
- Department of Respiratory Medicine, the First People's Hospital of Zunyi, Zunyi 563000, China
| | - G C Huang
- Department of Respiratory Medicine, the First People's Hospital of Zunyi, Zunyi 563000, China
| | - G Q Zhou
- Department of Respiratory Medicine, the First People's Hospital of Zunyi, Zunyi 563000, China
| | - K F Wu
- Clinical Laboratory, the First People's Hospital of Zunyi, Zunyi 563000, China
| | - D S Liu
- Department of Respiratory Medicine, the First People's Hospital of Zunyi, Zunyi 563000, China
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Duan XE, Tong HB, Wei XH, Shi HP, Bai SD, Bai T, Zhang J, Zhang YB, Liu DS. Coordination reactions of 2-pyridinecarboxaldehyde-phenylhydrazonatolithium with selected transition metal (Zn, Sn, Fe, Co, Ni and Zr) chlorides and its coupling reaction with dichloromethane. Dalton Trans 2016; 45:11061-70. [PMID: 27327837 DOI: 10.1039/c6dt01183g] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of 2-pyridinecarboxaldehyde-phenylhydrazonatolithium C5H4Npy-CH[double bond, length as m-dash]Ni-NaLi(Ph) (abbreviated as Li) with a 1/2 equivalent of anhydrous metal (Zn, Sn, Fe and Co) chlorides or NiCl2(DME) (DME = 1, 2-dimethoxyethane) produced the corresponding mononuclear metal(ii) complexes ( and ), in which each ligand acts as a bidentate ligand and the coordination geometries around the metals are shown to be tetrahedral within the complexes , , and , respectively, and a tetragonal pyramid in the complex . The reaction of Li successively with sodium tert-butoxide and anhydrous ZrCl4 afforded the unanticipated bizirconium complex , in which each monoanionic ligand behaves as a tridentate bridge. Whereas treatment of Li with NiCl2 and then CH2Cl2 led to an interesting methylene-bridged bis(2-pyridyl-phenylhydrazone) compound in moderate yield; a comparative experiment showed that when the Li reacted with CH2Cl2, the coupling compound was also obtained but in very low yield. A plausible mechanism of compound formation was also proposed and supported by the density functional theory (DFT) calculations. All the synthesized compounds were characterized by single-crystal X-ray diffraction.
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Affiliation(s)
- Xin-E Duan
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China.
| | - Hong-Bo Tong
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, P. R. China.
| | - Xue-Hong Wei
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China.
| | - He-Ping Shi
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China.
| | - Sheng-Di Bai
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, P. R. China.
| | - Tao Bai
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China.
| | - Jing Zhang
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, P. R. China.
| | - Yong-Bin Zhang
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, P. R. China.
| | - Dian-Sheng Liu
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, P. R. China.
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Affiliation(s)
- D S Liu
- Institute of Nutrition and Food Hygiene, Chinese Academy of Preventive Medicine, Beijing
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Jia YF, Jiang MM, Sun J, Shi RB, Liu DS. Studies on different iron source absorption by in situ ligated intestinal loops of broilers. Biol Trace Elem Res 2015; 163:154-61. [PMID: 25422090 DOI: 10.1007/s12011-014-0179-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 11/10/2014] [Indexed: 11/26/2022]
Abstract
The objective of this study was to investigate the iron source absorption in the small intestine of broiler. In situ ligated intestinal loops of 70 birds were poured into one of seven solutions, including inorganic iron (FeSO4, Fe2(SO4)3), organic Fe glycine chelate (Fe-Gly(II), Fe-Gly(III)), the mixtures (FeSO4 with glycine (Fe+Gly(II)), Fe2(SO4)3 with glycine (Fe+Gly(III)), and no Fe source (control). The total volume of 3-mL solution (containing 1 mg of elemental Fe) was injected into intestinal loops, and then 120-min incubation was performed. Compared with inorganic iron groups, in which higher FeSO4 absorption than Fe2(SO4)3 was observed, supplementation with organic Fe glycine chelate significantly increased the Fe concentration in the duodenum and jejunum (P < 0.05), however, decreased DMT1 and DcytB messenger RNA (mRNA) levels (P < 0.05). Organic Fe glycine chelate (Fe-Gly(II), Fe-Gly(III)) increased serum iron concentration (SI), compared with inorganic 3 valence iron groups (Fe2(SO4)3 and Fe+Gly(III)) (P < 0.05); moreover, lower TIBC value was observed for the chelate (P < 0.05); however, mixture of inorganic iron and glycine did not have a positive role at DMT1 and DcytB mRNA levels, SI and Fe concentrations in the small intestine. Those results indicated that the absorption of organic Fe glycine chelate was more effective than that of inorganic Fe, and the orders of iron absorption in the small intestine were: Fe-Gly(II), Fe-Gly(III) > FeSO4, Fe+Gly(II) > Fe2(SO4)3, Fe+Gly(III). Additionally, the simple mixture of inorganic iron and glycine could not increase Fe absorption, and the duodenum was the main site of Fe absorption in the intestines of broilers and the ileum absorbed iron rarely.
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Affiliation(s)
- Y F Jia
- College of Animal Science and Technology, Northeast Agricultural University, 150030, Harbin, People's Republic of China,
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Liu DS, Zhuang ZW, Lyu SR. Relationship between medial plica and medial femoral condyle--a three-dimensional dynamic finite element model. Clin Biomech (Bristol, Avon) 2014; 28:1000-5. [PMID: 24140294 DOI: 10.1016/j.clinbiomech.2013.09.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 09/18/2013] [Accepted: 09/24/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND Many researches reported that the pathologic medial plica impinges on the facing medial femoral condyle during knee motion and leads to erosive changes of the articular cartilage. The purpose of this study was to construct a simplified three-dimensional dynamic finite element human knee model to evaluate the dynamics behaviour between different types of medial plicae with the facing medial femoral condyles during knee motion. METHODS A three-dimensional dynamic finite element model composed of femur, tibia, covering cartilage and medial plica was developed. The kinematics of this simulation model was verified by previous findings during arthroscopic examination. The validated model was used to investigate and compare the magnitudes of the cyclic pressures acting on the cartilage of the medial femoral condyles by three different types of medial plicae with various Young's moduli. FINDINGS All types of plicae remained in contact with the medial femoral condyles and shifted medially when the knees moved from extension to flexion. The contact pressures were positively correlated with the Young's moduli of the medial plicae. During the whole range of motion, the maximum contact pressures of all simulation scenarios occurred when the knees moved beyond 50° of flexion. When the Young's moduli of medial plicae were set greater than 60 MPa, all types of medial plicae would elicit contact pressures greater than 10 MPa on the medial femoral condyles. INTERPRETATION The close relationship and possible high contact pressure between fibrotic medial plica and medial femoral condyle during knee motion might be a cause of cartilage damage on the medial femoral condyle and warrants further investigation.
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Affiliation(s)
- D S Liu
- Advanced Institute of Manufacturing for High-tech Innovations and Department of Mechanical Engineering, National Chung Cheng University, Chia-Yi, 621, Taiwan
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Cong JC, Chen CS, Ma MX, Xia ZX, Liu DS, Zhang FY. Laparoscopic intersphincteric resection for low rectal cancer: comparison of stapled and manual coloanal anastomosis. Colorectal Dis 2014; 16:353-8. [PMID: 24460588 DOI: 10.1111/codi.12573] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 10/04/2013] [Indexed: 01/07/2023]
Abstract
AIM The study aim was to analyse the safety and feasibility of laparoscopic intersphincteric resection with stapled coloanal anastomosis for low rectal cancer. METHOD Between March 2009 and August 2010, 22 patients underwent laparoscopic intersphincteric resection with a stapled coloanal anastomosis without a diverting ileostomy. The results were compared retrospectively with hand-sewn coloanal anastomoses performed between January 2001 and May 2009, which included 55 open and 38 laparoscopic intersphincteric resections. The morbidity comparison only included data relevant to the anastomosis. Function was compared using the Saito function questionnaire and the Wexner score and only involved data relevant to the laparoscopy. RESULTS The anastomotic complication rates were similar for fistula, bleeding and neorectal mucosal prolapse (P = 0.526, P = 0.653 and P = 0.411, respectively). Anastomotic leakage and stricture formation of the stapled coloanal anastomosis were significantly lower than those of the hand-sewn coloanal anastomosis (P = 0.037 and P = 0.028, respectively). There were no significant differences in the Saito function questionnaire and the Wexner score between the stapled and hand-sewn coloanal anastomotic groups (all P > 0.05). CONCLUSION Laparoscopic intersphincteric resection with a stapled coloanal anastomosis is technically feasible and is less likely to result in anastomotic leakage and stricture formation than a hand-sewn anastomosis.
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Affiliation(s)
- J C Cong
- Department of Colorectal Surgery, Shengjing Hospital, China Medical University, Shenyang, China
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Bai SD, Liu RQ, Wang T, Guan F, Wu YB, Chao JB, Tong HB, Liu DS. An alkyl-ended ansa-bis(amidine) and solvent-influenced complexation modes of its group IV metal derivatives. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.08.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Zhang S, Zhang YJ, Liu XZ, Zhang H, Liu DS. On the reliability of DNA sequences of Ophiocordyceps sinensis in public databases. J Ind Microbiol Biotechnol 2013; 40:365-78. [PMID: 23397071 DOI: 10.1007/s10295-012-1228-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 12/24/2012] [Indexed: 10/27/2022]
Abstract
Some DNA sequences in the International Nucleotide Sequence Databases (INSD) are erroneously annotated, which has lead to misleading conclusions in publications. Ophiocordyceps sinensis (syn. Cordyceps sinensis) is a fungus endemic to the Tibetan Plateau, and more than 100 populations covering almost its distribution area have been examined by us over recent years. In this study, using the data from authentic materials, we have evaluated the reliability of nucleotide sequences annotated as O. sinensis in the INSD. As of October 15, 2012, the INSD contained 874 records annotated as O. sinensis, including 555 records representing nuclear ribosomal DNA (63.5 %), 197 representing protein-coding genes (22.5 %), 92 representing random markers with unknown functions (10.5 %), and 30 representing microsatellite loci (3.5 %). Our analysis indicated that 39 of the 397 internal transcribed spacer entries, 27 of the 105 small subunit entries, and five of the 53 large subunit entries were incorrectly annotated as belonging to O. sinensis. For protein-coding sequences, all records of serine protease genes, the mating-type gene MAT1-2-1, the DNA lyase gene, the two largest subunits of RNA polymerase II, and elongation factor-1α gene were correct, while 14 of the 73 β-tubulin entries were indeterminate. Genetic diversity analyses using those sequences correctly identified as O. sinensis revealed significant genetic differentiation in the fungus although the extent of genetic differentiation varied with the gene. The relationship between O. sinensis and some other related fungal taxa is also discussed.
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Affiliation(s)
- Shu Zhang
- Institute of Applied Chemistry, Shanxi University, Taiyuan, China
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22
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Duan XE, Yuan SF, Tong HB, Bai SD, Wei XH, Liu DS. Metal (Mg, Fe, Co, Zr and Ti) complexes derived from aminosilyl substituted aminopyridinato ligand: synthesis, structures and ethylene polymerization behaviors of the group 4 complexes. Dalton Trans 2012; 41:9460-7. [PMID: 22806137 DOI: 10.1039/c2dt30463e] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lithium N-[(N,N-dimethylamino)dimethylsilyl]-2-pyridylamidate (2) was prepared from the reaction of new compound N-[(N,N-dimethylamino)dimethylsilyl]-2-pyridylamine (1) and LiBu(n). Treatment of the lithium salt (2) with an equal equivalent of MgBr(2)(THF)(2), FeCl(2) and CoCl(2) afforded the corresponding dinuclear complexes , , and , in which metal atoms possess similar trigonal bipyramidal geometries and each ligand functions as a bimetallic bridging binding aminopyridinato moiety with N-donation from the dimethylamino group. While the stoichiometric reaction of with ZrCl(4) gave the mononuclear zirconium complex (6); the seven coordinated zirconium atom adopts a distorted pentagonal bipyramid geometry and the ligand acts as monoanionic η(2)-aminopyridinato moiety with the pendant arm coordinated via N(CH(3))(2). The reaction of with one equivalent of TiCl(4)(THF)(2) produced the interesting dinuclear titanium complex (7) owing to the elimination of a (N,N-dimethylamino)dimethylsilyl group from the original ligand, and the two titanium centers present different coordination geometries. The molecular structures of the crystalline metal complexes have been confirmed by X-ray single crystal diffraction analysis. Upon activation with methylaluminoxane (MAO), both complexes and exhibited moderate catalytic activities toward ethylene polymerization and produced high molecular weight polyethylenes with broad molecular weight distributions.
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Affiliation(s)
- Xin-E Duan
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, PR China.
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Duan XE, Tong HB, Bai SD, Wei XH, Liu DS. meso-Bis{η(5)-1-[1-(dimethylamino)ethenyl]-3-(trimethylsilyl)cyclopentadienyl}iron(II) and the cobalt(II) analogue. Acta Crystallogr C 2012; 68:m139-42. [PMID: 22669183 DOI: 10.1107/s0108270112019312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 04/30/2012] [Indexed: 05/26/2023] Open
Abstract
The two title crystalline compounds, viz. meso-bis{η(5)-1-[1-(dimethylamino)ethenyl]-3-(trimethylsilyl)cyclopentadienyl}iron(II), [Fe(C(12)H(20)NSi)(2)], (II), and meso-bis{η(5)-1-[1-(dimethylamino)ethenyl]-3-(trimethylsilyl)cyclopentadienyl}cobalt(II), [Co(C(12)H(20)NSi)(2)], (III), were obtained by the reaction of lithium 1-[1-(dimethylamino)ethenyl]-3-(trimethylsilyl)cyclopentadienide with FeCl(2) and CoCl(2), respectively. For (II), the trimethylsilyl- and dimethylaminoethenyl-substituted cyclopentadienyl (Cp) rings present a nearly eclipsed conformation, and the two pairs of trimethylsilyl and dimethylaminoethenyl substituents on the Cp rings are arranged in an interlocked fashion. In the case of (III), the same substituted Cp rings are perfectly staggered leading to a crystallographically centrosymmetric molecular structure, and the two trimethylsilyl and two dimethylaminoethenyl substituents are oriented in opposite directions, respectively, with the trimethylsilyl group of one Cp ring and the dimethylaminoethenyl group of the other Cp ring arranged more closely than in (II).
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Affiliation(s)
- Xin-E Duan
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China
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Huo FJ, Yin CX, Yang YT, Su J, Chao JB, Liu DS. Ultraviolet-Visible Light (UV–Vis)-Reversible but Fluorescence-Irreversible Chemosensor for Copper in Water and Its Application in Living Cells. Anal Chem 2012; 84:2219-23. [DOI: 10.1021/ac202734m] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Fang-Jun Huo
- Research
Institute of Applied Cheemistry and ‡Key Laboratory of Chemical Biology and Molecular
Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006,
People’s Republic of China
| | - Cai-Xia Yin
- Research
Institute of Applied Cheemistry and ‡Key Laboratory of Chemical Biology and Molecular
Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006,
People’s Republic of China
| | - Yu-Tao Yang
- Research
Institute of Applied Cheemistry and ‡Key Laboratory of Chemical Biology and Molecular
Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006,
People’s Republic of China
| | - Jing Su
- Research
Institute of Applied Cheemistry and ‡Key Laboratory of Chemical Biology and Molecular
Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006,
People’s Republic of China
| | - Jian-Bin Chao
- Research
Institute of Applied Cheemistry and ‡Key Laboratory of Chemical Biology and Molecular
Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006,
People’s Republic of China
| | - Dian-Sheng Liu
- Research
Institute of Applied Cheemistry and ‡Key Laboratory of Chemical Biology and Molecular
Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006,
People’s Republic of China
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Duan XE, Wei XH, Tong HB, Bai SD, Zhang YB, Liu DS. Ferrocene-modified pyrimidinyl acyl-thiourea derivatives: Synthesis, structures and electrochemistry. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.08.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Zhang S, Zhang YJ, Liu XZ, Wen HA, Wang M, Liu DS. Cloning and analysis of the MAT1-2-1 gene from the traditional Chinese medicinal fungus Ophiocordyceps sinensis. Fungal Biol 2011; 115:708-14. [PMID: 21802050 DOI: 10.1016/j.funbio.2011.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 05/09/2011] [Accepted: 05/18/2011] [Indexed: 10/18/2022]
Abstract
The entomopathogenic fungus Ophiocordyceps sinensis has been important in traditional Chinese medicine but has yet to be commercially cultivated. One bottleneck is the very low frequency of stromata formation from artificially infected moth larvae. The mating system of fungi is the determining factor for sexual reproduction, but mating-type genes of O. sinensis have not been previously investigated. In this study, the putative mating-type gene MAT1-2-1 within the MAT1-2 idiomorph was amplified by polymerase chain reaction (PCR) and was determined to consist of 859 nucleotides that encode 249 amino acids; genes within the MAT1-1 idiomorph, however, were not determined. The MAT1-2-1 gene contained the conserved high-mobility group (HMG) box, and MAT1-2-1 flanking sequences were subsequently obtained. Although no putative open reading frames of the MAT1-1 idiomorph were detected within the ca. 8-kb flanking sequences of MAT1-2-1, a putative DNA lyase gene (which is present next to both idiomorphs in some heterothallic fungi) was found ca. 3.0 kb downstream of MAT1-2-1. The intervening distance between MAT1-2-1 and the DNA lyase gene in O. sinensis is larger than that in Cordyceps militaris and Cordyceps takaomontana. In addition, O. sinensis showed low sequence similarities with C. militaris and C. takaomontana in both MAT1-2-1 and the DNA lyase gene. In the phylogenetic tree, different MAT1-2-1 haplotypes of O. sinensis clustered together with high bootstrap support. As a single-copy gene, MAT1-2-1 was detected in all examined O. sinensis isolates including tissue cultures and single-ascospore cultures. This report describes, for the first time, a mating-type gene of O. sinensis.
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Affiliation(s)
- Shu Zhang
- Institute of Applied Chemistry, Shanxi University, Taiyuan 030006, China
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Bai SD, Guan F, Hu M, Yuan SF, Guo JP, Liu DS. Mononuclear titanium compounds based on the silyl-linked bis(amidinate) ligand: synthesis, characterization and ethylene polymerization. Dalton Trans 2011; 40:7686-8. [DOI: 10.1039/c1dt10365b] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Tong HB, Li M, Bai SD, Yuan SF, Chao JB, Huang S, Liu DS. A bulky silyl shift-directed synthesis of a silyl-linked amidinate-amidine and its Zr(iv) complex. Dalton Trans 2011; 40:4236-41. [DOI: 10.1039/c0dt01177k] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bai SD, Tong HB, Guo JP, Zhou MS, Liu DS, Yuan SF. Diverse coordination behaviors of the silyl-linked bis(amidinate) ligand [SiMe2{NC(Ph)N(Ph)}2]2− to zirconium center. Polyhedron 2010. [DOI: 10.1016/j.poly.2009.08.029] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Bai SD, Tong HB, Guo JP, Zhou MS, Liu DS. Coordination chemistry of group 4 metal compounds with mixed-ligand, silyl-linked bis(amidinate) ligand and cyclopentadienyl. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.05.038] [Citation(s) in RCA: 21] [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: 10/22/2022]
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Tong HB, Liu DS. Crystal structure of β-diketiminatodibenzophenonatolithium, [Me3SiNC(Ph)CHC(Ph)NSiMe3](Ph2CO)2Li. Z KRIST-NEW CRYST ST 2008. [DOI: 10.1524/ncrs.2008.0183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Yuan MS, Fang Q, Liu ZQ, Guo JP, Chen HY, Yu WT, Xue G, Liu DS. Acceptor or Donor (Diaryl B or N) Substituted Octupolar Truxene: Synthesis, Structure, and Charge-Transfer-Enhanced Fluorescence. J Org Chem 2006; 71:7858-61. [PMID: 16995698 DOI: 10.1021/jo061210i] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two diaryl B- and N-substituted truxene charge-transfer compounds B3 and N3 have been synthesized. The fluorescence intensities of several nonfunctionalized truxene compounds are 1 order of magnitude weaker than that of B3 and N3. To reveal the structure-property correlations, the X-ray structures of B3 and N3 and their precursors 3 and 4 have been determined. The extended molecular dimension, the especially shortened B-C bond, and the improved planarity of B3 can serve as direct structural evidence for the charge transfer.
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Affiliation(s)
- Mao-Sen Yuan
- State Key Laboratory of Crystal Materials, Shandong University, 250100 Jinan, P.R. China
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Li J, Huang S, Weng L, Liu D. Synthesis and structural studies of some titanium and zirconium complexes with chiral bis(amide), amidinate or bis(amidinate) ligands. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2006.03.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Chao JB, Tong HB, Liu DS, Huang SP. Preparation and characterization of inclusion complexes of pefloxacin mesylate with three kinds of cyclodextrins. Spectrochim Acta A Mol Biomol Spectrosc 2006; 64:166-70. [PMID: 16098803 DOI: 10.1016/j.saa.2005.07.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2005] [Accepted: 07/04/2005] [Indexed: 05/04/2023]
Abstract
The ability of alpha-cyclodextrin, beta-cyclodextrin and hydroxypropyl-beta-cyclodextrin (alpha-CD, beta-CD and HP-beta-CD) to break pefloxacin mesylate (PM) aggregates by forming inclusion complexes has been studied using 1H NMR (nuclear magnetic resonance spectroscopy), 13C NMR and fluorescence spectra. The inclusion constants are determined to compare the corresponding inclusion capacity. Solid-inclusion complexes of PM with CDs are synthesized by coprecipitation method, and all the inclusion ratios are found to be 1:1. Additionally, spatial characterization of complexes has been proposed based on two-dimensional nuclear magnetic resonance technique (2D NMR) and spatial conformation is also investigated to propose two possible models between PM and CDs.
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Affiliation(s)
- Jian-Bin Chao
- Institute of Modern Chemistry, Shanxi University, Taiyuan 030006, China.
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Abstract
A novel type of linked bis(amidinate) ligands (D) were developed successfully. Their lithium derivatives 1-4 were synthesized by treating the silyl-bridged diamines I-IV with two equivalents of LiBu(n) and PhCN in sequence, which underwent a silyl-bridge migration process. In addition, the linked bis(amidinate) configuration proved to be the thermodynamically stable form rather than the mono(amidinate) type by contrasting reaction of I with one equivalent of LiBu(n) and PhCN in sequence.
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Affiliation(s)
- Sheng-Di Bai
- Institute of Modern Chemistry, Shanxi University, Taiyuan, Shanxi 030006, P. R. China
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Wang ML, Chang RB, Liu DS. [Synthesis and antitumour activity of metal complexes of bacteriochlorophyll]. Yao Xue Xue Bao 2005; 40:920-3. [PMID: 16408810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
AIM To find a new PDT sensitizer. METHODS There were four complexes (Cu, Zn, Co, Ni) synthesized through reaction of metal and deprivating-Mg bacteriochlorophyll in the organic solvent. Their antitumor action was detected by MTT. RESULTS The ultraviolet-visual spectrum and the fluorescence spectrum of these complexes showed that synthesis of these four complexes was succeeded. And these metal complexes have potent antitumor action on two kinds of leukaemic cells. CONCLUSION Metal bacteriochlorophylls as PDT sensitizers have very good properties and this is a way to develop new PDT sensitizers.
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Affiliation(s)
- Meng-Liang Wang
- Institute of Modern Chemistry, Shanxi University, Taiyuan 030006, China.
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Wei YL, Dong C, Shuang SM, Liu DS. Study for luminescence performance of three methyl xanthine derivatives. Spectrochim Acta A Mol Biomol Spectrosc 2005; 61:2584-9. [PMID: 16043051 DOI: 10.1016/j.saa.2004.09.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2004] [Accepted: 09/29/2004] [Indexed: 05/03/2023]
Abstract
In this paper, the low-temperature phosphorescence (LTP), the low-temperature fluorescence (LTF), the paper substrate room-temperature phosphorescence (PS-RTP) and the room fluorescence (RTF) properties of caffeine (CF), theophylline (TP), and theobromine (TB) are investigated and compared, and some rules are found out: their maximal excitation wavelength and emission wavelength are in the range of 270-300 nm and 395-445 nm, respectively. And the PS-RTP characters of lifetime, polarization and quanta yield are also investigated and compared. It is found that their lifetimes of PS-RTP are all in the level of 0.1s. They belong to long-life phosphorescence and their PS-RTP spectra are incompletely polarized.
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Affiliation(s)
- Yan-Li Wei
- Institute of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, PR China
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Chen X, Wang L, Guo JP, Huang SP, Liu DS. Chain lithium complexes supported with β -diketiminate ligands containing pyridyl on the carbon framework. Mendeleev Communications 2005. [DOI: 10.1070/mc2005v015n04abeh002115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Hu JH, Tong HB, Li JF, Huang SP, Liu DS. (1R,2R)-(-)-Bis[mu4-1-[[1,1-dimethyl-2-(trimethylsilyl)amidino]amino]-2-([1,1-dimethyl-2-[1,1-dimethyl-2-(trimethylsilyl)amidino]amidino]amino)cyclohexane]tetralithium(I). Acta Crystallogr C 2004; 60:m272-4. [PMID: 15178847 DOI: 10.1107/s0108270104008509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2004] [Accepted: 04/08/2004] [Indexed: 11/10/2022] Open
Abstract
The title compound, [Li(4)(C(21)H(46)N(8)Si(2))(2)], has been prepared and its structure determined. The whole molecule can be regarded as a molecular cage made up of the central eight-membered ring and six contiguous rings of three types. As the first example of a bridged amidinate-dicyanamide framework, this noteworthy structure and its electronic features are presented.
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Affiliation(s)
- Jing-Hua Hu
- Institute of Modern Chemistry, University of Shanxi, Taiyuan, Shanxi 030006, People's Republic of China
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Shi HP, Liu DS, Huang SP. [Benzylbis(dimethylamino)methylsilyl-kappa2C,N](N,N,N',N'-tetramethylethylenediamine-kappa2N,N)lithium(I). Acta Crystallogr C 2004; 60:m107-9. [PMID: 15004357 DOI: 10.1107/s0108270104000836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2003] [Accepted: 01/12/2004] [Indexed: 11/10/2022] Open
Abstract
The title compound, [Li(C12H21NSi)(C6H16N2)], is an intermediate in the synthesis of the corresponding organometallic compounds. The molecule has an unusual C-Si-N-Li four-membered heterocycle which adopts a folded conformation, with the coordination around the Li, N, C and Si atoms being distorted tetrahedral. Its structure is strongly supported by 1H NMR, 13C NMR and 13C-1H correlation spectra. The compound has potential for application in the synthesis of other novel organometallic compounds.
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Affiliation(s)
- He-Ping Shi
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, People's Republic of China
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Chao JB, Tong HB, Huang SP, Liu DS. Preparation and study on the solid inclusion complex of sparfloxacin with beta-cyclodextrin. Spectrochim Acta A Mol Biomol Spectrosc 2004; 60:161-166. [PMID: 14670473 DOI: 10.1016/s1386-1425(03)00211-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The interaction of sparfloxacin with beta-cyclodextrin (beta-CD) has been studied by several analytical techniques, including 1H-NMR, 13C-NMR, fluorescence spectroscopy, infrared spectroscopy, thermal analysis, and scanning electron microscope. In this paper, solid inclusion complex of sparfloxacin with beta-CD was synthesized by the coprecipitation method. In addition, the characterization of the inclusion complex has been proved by fluorimetry, Infrared, differential scanning calorimetry and 1D, 2D NMR. The experimental results confirmed the existence of 1:1 inclusion complex of sparfloxacin with beta-CD. The formation constant of complex was determined by fluorescence method and 1H-NMR. Spacial configuration of complex has been proposed on 2D NMR techniques.
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Affiliation(s)
- Jian-Bin Chao
- The Test and Analysis Center of Shanxi University, TaiYuan 030006, China.
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Li JF, Huang SP, Weng LH, Liu DS. TiIV Complexes with Novel, Chiral, Tridentate Amido-Amidinate or Monoanionic, Didentate Amidinate Ligands. Eur J Inorg Chem 2003. [DOI: 10.1002/ejic.200390110] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Zhou MS, Huang SP, Weng LH, Sun WH, Liu DS. Synthesis and crystal structures of novel β-diketiminato-lithium, iron, cobalt, nickel, zirconium complexes and their catalytical behaviors in polymerization of ethylene. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(02)02139-3] [Citation(s) in RCA: 43] [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: 10/27/2022]
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Li JF, Weng LH, Wei XH, Liu DS. Synthesis and structures of novel chiral lithium amidinates and mono- and di-lithium (1R,2R)-(–)-1,2-(NHSiMe3)2C6H10. ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b106992f] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Boesveld WM, Hitchcock PB, Lappert MF, Liu DS, Tian S. Synthesis and Structures of the Crystalline Heavier Alkali Metal Alkyls: X-ray Structures of [K(μ-R){O(Me)But}]∞, [(pmdeta)K(μ-R)K(μ-R)2K(μ-R)K(pmdeta)], and [Cs(μ-R)(tmeda)]∞ (R = CH(SiMe3)2). Organometallics 2000. [DOI: 10.1021/om0004287] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- W. Marco Boesveld
- The Chemistry Laboratory, University of Sussex, Brighton, U.K. BN1 9QJ
| | | | | | - Dian-Sheng Liu
- The Chemistry Laboratory, University of Sussex, Brighton, U.K. BN1 9QJ
| | - Shun Tian
- The Chemistry Laboratory, University of Sussex, Brighton, U.K. BN1 9QJ
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Leung WP, Cheng H, Liu DS, Wang QG, Mak TCW. Synthesis and Structures of Novel Phenyl-Bridged Bis(1-azaallyl) Alkali-Metal Compounds. Organometallics 2000. [DOI: 10.1021/om000120f] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wing-Por Leung
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Hui Cheng
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Dian-Sheng Liu
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Qi-Guang Wang
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
| | - Thomas C. W. Mak
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong
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Hitchcock PB, Lappert MF, Layh M, Liu DS, Sablong R, Shun T. Reactions of LiCHR2 and related lithium alkyls with α-H free nitriles and the crystal structures of eleven representative lithium 1,3-diazaallyls, 1-azaallyls and β-diketiminates. ACTA ACUST UNITED AC 2000. [DOI: 10.1039/b002376k] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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