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Lu DH, Xu XX, Zhou R, Wang C, Lan LT, Yang XY, Feng X. Ultrasound-guided stellate ganglion block benefits the postoperative recovery of patients undergoing laparoscopic colorectal surgery: a single-center, double-blinded, randomized controlled clinical trial. BMC Anesthesiol 2024; 24:137. [PMID: 38600490 PMCID: PMC11005129 DOI: 10.1186/s12871-024-02518-5] [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: 10/19/2023] [Accepted: 03/28/2024] [Indexed: 04/12/2024] Open
Abstract
BACKGROUND With the increasing prevalence of colorectal cancer (CRC), optimizing perioperative management is of paramount importance. This study investigates the potential of stellate ganglion block (SGB), known for its stress response-mediating effects, in improving postoperative recovery. We postulate that preoperative SGB may enhance the postoperative recovery of patients undergoing laparoscopic CRC surgery. METHODS We conducted a randomized controlled trial of 57 patients undergoing laparoscopic colorectal cancer surgery at a single center. Patients, aged 18-70 years, were randomly assigned to receive either preoperative SGB or standard care. SGB group patients received 10 mL of 0.2% ropivacaine under ultrasound guidance prior to surgery. Primary outcome was time to flatus, with secondary outcomes encompassing time to defecation, lying in bed time, visual analog scale (VAS) pain score, hospital stays, patient costs, intraoperative and postoperative complications, and 3-year mortality. A per-protocol analysis was used. RESULTS Twenty-nine patients in the SGB group and 28 patients in the control group were analyzed. The SGB group exhibited a significantly shorter time to flatus (mean [SD] hour, 20.52 [9.18] vs. 27.93 [11.69]; p = 0.012), accompanied by decreased plasma cortisol levels (mean [SD], postoperatively, 4.01 [3.42] vs 7.75 [3.13], p = 0.02). Notably, postoperative pain was effectively managed, evident by lower VAS scores at 6 h post-surgery in SGB-treated patients (mean [SD], 4.70 [0.91] vs 5.35 [1.32]; p = 0.040). Furthermore, patients in the SGB group experienced reduced hospital stay length (mean [SD], day, 6.61 [1.57] vs 8.72 [5.13], p = 0.042). CONCLUSIONS Preoperative SGB emerges as a promising approach to enhance the postoperative recovery of patients undergoing laparoscopic CRC surgery. CLINICAL TRIAL REGISTRATION ChiCTR1900028404, Principal investigator: Xia Feng, Date of registration: 12/20/2019.
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Affiliation(s)
- Di-Han Lu
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-Sen University, No.58 2nd Zhongshan Road, Guangzhou, Guangdong, 510080, P.R. China
| | - Xuan-Xian Xu
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-Sen University, No.58 2nd Zhongshan Road, Guangzhou, Guangdong, 510080, P.R. China
| | - Rui Zhou
- Department of Hepatobiliary Surgery, The Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, No. 107 Yanjiang West Road, Guangzhou, Guangdong, 510120, P.R. China
| | - Chen Wang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-Sen University, No.58 2nd Zhongshan Road, Guangzhou, Guangdong, 510080, P.R. China
| | - Liang-Tian Lan
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-Sen University, No.58 2nd Zhongshan Road, Guangzhou, Guangdong, 510080, P.R. China
| | - Xiao-Yu Yang
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-Sen University, No.58 2nd Zhongshan Road, Guangzhou, Guangdong, 510080, P.R. China.
| | - Xia Feng
- Department of Anesthesiology, The First Affiliated Hospital, Sun Yat-Sen University, No.58 2nd Zhongshan Road, Guangzhou, Guangdong, 510080, P.R. China.
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Zhu L, Lang JH, Ren C, Zhang YL, Chen DJ, Chen L, Chen YL, Cui MH, Di W, Duan H, Hao M, Huang XH, Li PL, Mao YD, Qi HB, Shi HR, Song L, Wang YF, Xu KH, Xu XX, Xue X, Yang HX, Yao SZ, Zhang GN, Zhang HW, Zhang SL, Zhou HM, Zhou YF, Zhu WG. [The Chinese guideline for prevention of pelvic and abdominal adhesions after obstetric and gynecologic surgery (2023 edition)]. Zhonghua Fu Chan Ke Za Zhi 2023; 58:161-169. [PMID: 36935192 DOI: 10.3760/cma.j.cn112141-20220822-00523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
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Liu JJ, Xu XX, Sun LJ, Yuan CX, Kaneko K, Sun Y, Liang PF, Wu HY, Shi GZ, Lin CJ, Lee J, Wang SM, Qi C, Li JG, Li HH, Xayavong L, Li ZH, Li PJ, Yang YY, Jian H, Gao YF, Fan R, Zha SX, Dai FC, Zhu HF, Li JH, Chang ZF, Qin SL, Zhang ZZ, Cai BS, Chen RF, Wang JS, Wang DX, Wang K, Duan FF, Lam YH, Ma P, Gao ZH, Hu Q, Bai Z, Ma JB, Wang JG, Wu CG, Luo DW, Jiang Y, Liu Y, Hou DS, Li R, Ma NR, Ma WH, Yu GM, Patel D, Jin SY, Wang YF, Yu YC, Hu LY, Wang X, Zang HL, Wang KL, Ding B, Zhao QQ, Yang L, Wen PW, Yang F, Jia HM, Zhang GL, Pan M, Wang XY, Sun HH, Xu HS, Zhou XH, Zhang YH, Hu ZG, Wang M, Liu ML, Ong HJ, Yang WQ. Observation of a Strongly Isospin-Mixed Doublet in ^{26}Si via β-Delayed Two-Proton Decay of ^{26}P. Phys Rev Lett 2022; 129:242502. [PMID: 36563237 DOI: 10.1103/physrevlett.129.242502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 10/10/2022] [Accepted: 11/03/2022] [Indexed: 06/17/2023]
Abstract
β decay of proton-rich nuclei plays an important role in exploring isospin mixing. The β decay of ^{26}P at the proton drip line is studied using double-sided silicon strip detectors operating in conjunction with high-purity germanium detectors. The T=2 isobaric analog state (IAS) at 13 055 keV and two new high-lying states at 13 380 and 11 912 keV in ^{26}Si are unambiguously identified through β-delayed two-proton emission (β2p). Angular correlations of two protons emitted from ^{26}Si excited states populated by ^{26}P β decay are measured, which suggests that the two protons are emitted mainly sequentially. We report the first observation of a strongly isospin-mixed doublet that deexcites mainly via two-proton decay. The isospin mixing matrix element between the ^{26}Si IAS and the nearby 13 380-keV state is determined to be 130(21) keV, and this result represents the strongest mixing, highest excitation energy, and largest level spacing of a doublet ever observed in β-decay experiments.
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Affiliation(s)
- J J Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - X X Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Physics, The University of Hong Kong, Hong Kong, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - L J Sun
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - K Kaneko
- Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503, Japan
| | - Y Sun
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - P F Liang
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - H Y Wu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - G Z Shi
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - C J Lin
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- College of Physics and Technology & Guangxi Key Laboratory of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - J Lee
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - S M Wang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
- Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai 200438, China
| | - C Qi
- KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - J G Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H H Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Latsamy Xayavong
- Department of Physics, Faculty of Natural Sciences, National University of Laos, Vientiane 01080, Laos
| | - Z H Li
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - P J Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y Y Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H Jian
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y F Gao
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R Fan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S X Zha
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - F C Dai
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H F Zhu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J H Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z F Chang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S L Qin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z Z Zhang
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - B S Cai
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - R F Chen
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J S Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- College of Science, Huzhou University, Huzhou 313000, China
| | - D X Wang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - K Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - F F Duan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Y H Lam
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - P Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z H Gao
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Q Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z Bai
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J B Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J G Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - C G Wu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - D W Luo
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Y Jiang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Y Liu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - D S Hou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - N R Ma
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - W H Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
| | - G M Yu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China
| | - D Patel
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Physics, Sardar Vallabhbhai National Institute of Technology, Surat 395007, India
| | - S Y Jin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y F Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Physics and Astronomy, Yunnan University, Kunming 650091, China
| | - Y C Yu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Physics and Astronomy, Yunnan University, Kunming 650091, China
| | - L Y Hu
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China
| | - X Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - H L Zang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - K L Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - B Ding
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Q Q Zhao
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - L Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - P W Wen
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - F Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - H M Jia
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - G L Zhang
- School of Physics, Beihang University, Beijing 100191, China
| | - M Pan
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics, Beihang University, Beijing 100191, China
| | - X Y Wang
- School of Physics, Beihang University, Beijing 100191, China
| | - H H Sun
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - H S Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - X H Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - Y H Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - Z G Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M L Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H J Ong
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- RCNP, Osaka University, Osaka 567-0047, Japan
| | - W Q Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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Chen L, Xu XX, Lu YX, Zhang KC. [Several issues on surgical treatment for adenocarcinoma of esophagogastric junction]. Zhonghua Wai Ke Za Zhi 2022; 60:807-812. [PMID: 36058705 DOI: 10.3760/cma.j.cn112139-20220417-00172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
There are several controversies and issues in the surgical treatment of esophagogastric junction (AEG) currently. The Siewert classification and TNM staging system are commonly used to assist clinical decision and prognosis prediction. Generally, transthoracic procedure is more suitable for Siewert Ⅰ type and longer esophageal invasion patients, while transhiatal is more suitable for Siewert Ⅲ type patients. The optimal extent of lymph node dissection for AEG should be based on tumor location and esophageal invasion range. The extent of surgical resection and the method of digestive tract reconstruction should be based on the principle of radical resection and surgical safety, and the postoperative life quality of patients should be fully considered. Roux-en-Y anastomosis is the most common and efficient anastomosis after total gastrectomy, while double tract anastomosis is recommended by many experts after proximal gastrectomy. With the continuous advancement of minimally invasive techniques, experienced centers and teams can perform digestive tract reconstruction under total laparoscopy. In the future, more high-quality studies are expected to provide evidence-based medical evidence for AEG's surgical treatment decisions.
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Affiliation(s)
- L Chen
- Department of General Surgery, the First Medical Center, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - X X Xu
- Department of General Surgery, the First Medical Center, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - Y X Lu
- Department of General Surgery, the First Medical Center, Chinese People's Liberation Army General Hospital, Beijing 100853, China
| | - K C Zhang
- Department of General Surgery, the First Medical Center, Chinese People's Liberation Army General Hospital, Beijing 100853, China
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5
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Zhang ZY, Yang HB, Huang MH, Gan ZG, Yuan CX, Qi C, Andreyev AN, Liu ML, Ma L, Zhang MM, Tian YL, Wang YS, Wang JG, Yang CL, Li GS, Qiang YH, Yang WQ, Chen RF, Zhang HB, Lu ZW, Xu XX, Duan LM, Yang HR, Huang WX, Liu Z, Zhou XH, Zhang YH, Xu HS, Wang N, Zhou HB, Wen XJ, Huang S, Hua W, Zhu L, Wang X, Mao YC, He XT, Wang SY, Xu WZ, Li HW, Ren ZZ, Zhou SG. New α-Emitting Isotope ^{214}U and Abnormal Enhancement of α-Particle Clustering in Lightest Uranium Isotopes. Phys Rev Lett 2021; 126:152502. [PMID: 33929212 DOI: 10.1103/physrevlett.126.152502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/25/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
A new α-emitting isotope ^{214}U, produced by the fusion-evaporation reaction ^{182}W(^{36}Ar,4n)^{214}U, was identified by employing the gas-filled recoil separator SHANS and the recoil-α correlation technique. More precise α-decay properties of even-even nuclei ^{216,218}U were also measured in the reactions of ^{40}Ar, ^{40}Ca beams with ^{180,182,184}W targets. By combining the experimental data, improved α-decay reduced widths δ^{2} for the even-even Po-Pu nuclei in the vicinity of the magic neutron number N=126 are deduced. Their systematic trends are discussed in terms of the N_{p}N_{n} scheme in order to study the influence of proton-neutron interaction on α decay in this region of nuclei. It is strikingly found that the reduced widths of ^{214,216}U are significantly enhanced by a factor of two as compared with the N_{p}N_{n} systematics for the 84≤Z≤90 and N<126 even-even nuclei. The abnormal enhancement is interpreted by the strong monopole interaction between the valence protons and neutrons occupying the π1f_{7/2} and ν1f_{5/2} spin-orbit partner orbits, which is supported by the large-scale shell model calculation.
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Affiliation(s)
- Z Y Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H B Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - M H Huang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z G Gan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - C Qi
- Department of Physics, Royal Institute of Technology (KTH), Stockholm SE-10691, Sweden
| | - A N Andreyev
- Department of Physics, University of York, York YO10 5DD, United Kingdom
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - M L Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - L Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - M M Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y L Tian
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y S Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - J G Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - C L Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - G S Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y H Qiang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - W Q Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - R F Chen
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H B Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z W Lu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - X X Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - L M Duan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H R Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - W X Huang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X H Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y H Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H S Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - N Wang
- Guangxi Key Laboratory of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - H B Zhou
- Guangxi Key Laboratory of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - X J Wen
- Guangxi Key Laboratory of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - S Huang
- Guangxi Key Laboratory of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - W Hua
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - L Zhu
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - X Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Y C Mao
- Department of Physics, Liaoning Normal University, Dalian 116029, China
| | - X T He
- College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - S Y Wang
- Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, China
| | - W Z Xu
- Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, China
| | - H W Li
- Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment, School of Space Science and Physics, Institute of Space Sciences, Shandong University, Weihai 264209, China
| | - Z Z Ren
- School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
| | - S G Zhou
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, China
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6
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Lee J, Xu XX, Kaneko K, Sun Y, Lin CJ, Sun LJ, Liang PF, Li ZH, Li J, Wu HY, Fang DQ, Wang JS, Yang YY, Yuan CX, Lam YH, Wang YT, Wang K, Wang JG, Ma JB, Liu JJ, Li PJ, Zhao QQ, Yang L, Ma NR, Wang DX, Zhong FP, Zhong SH, Yang F, Jia HM, Wen PW, Pan M, Zang HL, Wang X, Wu CG, Luo DW, Wang HW, Li C, Shi CZ, Nie MW, Li XF, Li H, Ma P, Hu Q, Shi GZ, Jin SL, Huang MR, Bai Z, Zhou YJ, Ma WH, Duan FF, Jin SY, Gao QR, Zhou XH, Hu ZG, Wang M, Liu ML, Chen RF, Ma XW. Large Isospin Asymmetry in ^{22}Si/^{22}O Mirror Gamow-Teller Transitions Reveals the Halo Structure of ^{22}Al. Phys Rev Lett 2020; 125:192503. [PMID: 33216609 DOI: 10.1103/physrevlett.125.192503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 07/26/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
β-delayed one-proton emissions of ^{22}Si, the lightest nucleus with an isospin projection T_{z}=-3, are studied with a silicon array surrounded by high-purity germanium detectors. Properties of β-decay branches and the reduced transition probabilities for the transitions to the low-lying states of ^{22}Al are determined. Compared to the mirror β decay of ^{22}O, the largest value of mirror asymmetry in low-lying states by far, with δ=209(96), is found in the transition to the first 1^{+} excited state. Shell-model calculation with isospin-nonconserving forces, including the T=1, J=2, 3 interaction related to the s_{1/2} orbit that introduces explicitly the isospin-symmetry breaking force and describes the loosely bound nature of the wave functions of the s_{1/2} orbit, can reproduce the observed data well and consistently explain the observation that a large δ value occurs for the first but not for the second 1^{+} excited state of ^{22}Al. Our results, while supporting the proton-halo structure in ^{22}Al, might provide another means to identify halo nuclei.
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Affiliation(s)
- J Lee
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - X X Xu
- Department of Physics, The University of Hong Kong, Hong Kong, China
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - K Kaneko
- Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503, Japan
| | - Y Sun
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - C J Lin
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- College of Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - L J Sun
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - P F Liang
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - Z H Li
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - J Li
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - H Y Wu
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - D Q Fang
- Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - J S Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Science, Huzhou University, Huzhou 313000, China
| | - Y Y Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - Y H Lam
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y T Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang, 453007, China
| | - K Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - J G Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J B Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J J Liu
- Department of Physics, The University of Hong Kong, Hong Kong, China
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - P J Li
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - Q Q Zhao
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - L Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - N R Ma
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - D X Wang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - F P Zhong
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - S H Zhong
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - F Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - H M Jia
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - P W Wen
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - M Pan
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
| | - H L Zang
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - X Wang
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - C G Wu
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - D W Luo
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - H W Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - C Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - C Z Shi
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - M W Nie
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - X F Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - H Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - P Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Q Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - G Z Shi
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - S L Jin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - M R Huang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z Bai
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y J Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - W H Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - F F Duan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - S Y Jin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Q R Gao
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - X H Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - Z G Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M L Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - R F Chen
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - X W Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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7
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Guo X, Xu XX, Qiu J, Ren J, Sun XD. [Analysis on the project personnel's attitude and its influential factors of 23-valent pneumococcal polysaccharide vaccination program for the elderly in Shanghai]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:934-941. [PMID: 32907281 DOI: 10.3760/cma.j.cn112150-20200122-00038] [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 understand the project personnel's attitude towards the 23-valent pneumococcal polysaccharide vaccination program for the elderly in Shanghai and its conversion to routine vaccination and to explore its influential factors, so as to provide reference for the further development of the program. Methods: In 2016, a one-to-one questionnaire survey was conducted among the people involved in the project in the 9 districts of Shanghai and the data of demographic characteristics, cognition of pneumococcal pneumonia and PPV23, evaluation of the project, support rate of the project and its conversion to routine vaccination of the project personnel were collected. Results: Among the 2005 respondents, 28.6% (574 persons) of them were male, 85.5% (1 714 persons) of them supported the free vaccination for the elderly, and 69.5% of them (1 394 persons) supported the routine vaccination. For the 23-valent pneumococcal polysaccharide vaccination program, people under 55 years old, in Qingpu District, with poor cognition of pneumonia and 23-valent pneumococcal polysaccharide vaccine (PPV23) or having lower evaluation of the project's scientificity or enforceability had lower support rate than others, and the OR (95%CI) were 0.38 (0.19-0.75), 0.21 (0.10-0.43), 0.16 (0.06-0.41) and 0.26 (0.10-0.69). People believing that the elderly were susceptible to pneumococcal pneumonia and PPV23 was safe and reliable, and those who were willing to vaccinate the elderly at home had higher support rate, and the OR (95%CI) were 2.30 (1.18-4.47), 2.84 (1.62-4.69) and 5.60 (3.74-8.38). For the program's conversion to routine vaccination, people under 35 years old, in Qingpu District, in the vaccination clinic, and those believing that the project was not scientific and difficult to implement had low support rate, and the OR (95%CI) were 0.56 (0.32-0.98), 0.48 (0.26-0.89), 0.26 (0.12-0.59), 0.58 (0.42-0.79) and 0.50 (0.30-0.81); people with technical secondary school or senior school, in Jiading, Putuo or Minhang District, believing that PPV23 was effective in the prevention of pneumococcal pneumonia in the elderly, and those who were willing to vaccinate the elderly with PPV23 had higher support rate, and the OR (95%CI) were 1.63 (1.11-2.39), 2.28 (1.71-3.03), 1.69 (1.25-2.28) and 4.10 (2.86-5.88). Conclusion: The support rate of pneumococcal vaccination project for the elderly in Shanghai needs to be improved, especially its conversion to the routine vaccination.
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Affiliation(s)
- X Guo
- Department of Immunization, Shanghai Municipal Center for Disease Control and Prevention,Shanghai 200336,China
| | - X X Xu
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China
| | - J Qiu
- Department of Immunization, Shanghai Municipal Center for Disease Control and Prevention,Shanghai 200336,China
| | - J Ren
- Department of Immunization, Shanghai Municipal Center for Disease Control and Prevention,Shanghai 200336,China
| | - X D Sun
- Department of Immunization, Shanghai Municipal Center for Disease Control and Prevention,Shanghai 200336,China
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8
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Ma L, Zhang ZY, Gan ZG, Zhou XH, Yang HB, Huang MH, Yang CL, Zhang MM, Tian YL, Wang YS, Zhou HB, He XT, Mao YC, Hua W, Duan LM, Huang WX, Liu Z, Xu XX, Ren ZZ, Zhou SG, Xu HS. Short-Lived α-Emitting Isotope ^{222}Np and the Stability of the N=126 Magic Shell. Phys Rev Lett 2020; 125:032502. [PMID: 32745401 DOI: 10.1103/physrevlett.125.032502] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/22/2020] [Accepted: 06/26/2020] [Indexed: 06/11/2023]
Abstract
A new, very short-lived neutron-deficient isotope ^{222}Np was produced in the complete-fusion reaction ^{187}Re(^{40}Ar,5n)^{222}Np, and observed at the gas-filled recoil separator SHANS. The new isotope ^{222}Np was identified by employing a recoil-α correlation measurement, and six α-decay chains were established for it. The decay properties of ^{222}Np with E_{α}=10016(33) keV and T_{1/2}=380_{-110}^{+260} ns were determined experimentally. The α-decay systematics of Np isotopes is improved by adding the new data for ^{222}Np, which validates the N=126 shell effect in Np isotopes. The evolution of the N=126 shell closure is discussed in the neutron-deficient nuclei up to Np within the framework of α-decay reduced width.
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Affiliation(s)
- L Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z Y Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z G Gan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X H Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H B Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - M H Huang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - C L Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - M M Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y L Tian
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y S Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - H B Zhou
- Guangxi Key Laboratory of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - X T He
- College of Material Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Y C Mao
- Department of Physics, Liaoning Normal University, Dalian 116029, China
| | - W Hua
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - L M Duan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - W X Huang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X X Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z Z Ren
- School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
| | - S G Zhou
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China
- Synergetic Innovation Center for Quantum Effects and Application, Hunan Normal University, Changsha 410081, China
| | - H S Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Li D, Xu XX, Yan DD, Yuan SH, Lou HM. [Clinical significance of serum squamous cell carcinoma antigen in patients with early cervical squamous cell carcinoma]. Zhonghua Zhong Liu Za Zhi 2019; 41:357-362. [PMID: 31137169 DOI: 10.3760/cma.j.issn.0253-3766.2019.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical significance of serum squamous cell carcinoma antigen (SCC-Ag) in early cervical squamous cell carcinoma. Methods: The clinicopathological data and follow-up information of 1435 patients with stage ⅠA2-ⅡA cervical squamous cell carcinoma were collected. The correlation between serum SCC-Ag level and clinicopathological feature and prognosis were analyzed. The best cut-off of serum SCC-Ag for predicting pelvic lymph node metastasis and survival of cervical squamous cell carcinoma patients were also identified. Results: The result of univariate analysis showed that The International Federation of Gynecology and Obstetrics (FIGO) staging, tumor size, depth of cervical stromal invasion, lymphovascular space involvement, pelvic lymph node metastasis, common iliac lymph node metastasis and para-aortic lymph node metastasis were significantly related with serum SCC-Ag level (all P<0.05). The result of multivariate logistic regression analysis showed that tumor size, depth of cervical stromal invasion, pelvic lymph node metastasis and common iliac lymph node metastasis were the independent risk factors of preoperative serum SCC-Ag>2.65 ng/ml (all P<0.001). Multivariate Cox regression analysis showed that lymphovascular space involvement, SCC-Ag>3.15 ng/ml, common iliac lymph node metastasis and tumor size >4 cm were the independent prognostic risk factors (all P<0.05). The univariate analysis showed that, the tumor size, FIGO stage, depth of cervical stromal invasion and SCC-Ag level were significantly related with the recurrence of 1 096 patients without postoperative high risk factors (all P<0.05). Multivariate logistic regression analysis showed that FIGO stage (OR=1.671) and SCC-Ag>2.65 ng/ml (OR=4.490) were the independent risk factors for recurrence (both P<0.05). The best cut off of SCC-Ag for predicting early postoperative cervical lymph node metastasis of cervical squamous cell carcinoma was 2.65 ng/ml, the sensitivity was 60.8%, the specificity was 71.8%. The best cut off of SCC-Ag for predicting prognosis of cervical squamous cell carcinoma was 3.15 ng/ml, the sensitivity was 53.5%, the specificity was 71.1%. Conclusions: Preoperative serum squamous cell carcinoma antigen is an independent prognostic risk factor of survival of patients with early cervical squamous cell carcinoma, and is significantly related with recurrence of patients without postoperative high-risk factors. It can be used as a reference factor for postoperative adjuvant radiotherapy.
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Affiliation(s)
- D Li
- Graduate School of Second Clinical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
| | - X X Xu
- Department of Gynecologic Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou 310022, China
| | - D D Yan
- Department of Gynecologic Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou 310022, China
| | - S H Yuan
- Department of Gynecologic Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou 310022, China
| | - H M Lou
- Department of Gynecologic Radiation Oncology, Zhejiang Cancer Hospital, Hangzhou 310022, China
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Li YM, Xiang L, Zhao Q, Zhao J, Xu XX, Lin QQ, Zhang C, Xiao Q. [Correlation between endogenous EPO levels and electrocardiogram scatter plot changes in patients with coronary heart disease and autonomic nerve function injury]. Zhonghua Yi Xue Za Zhi 2019; 99:1412-1417. [PMID: 31137130 DOI: 10.3760/cma.j.issn.0376-2491.2019.18.011] [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 analyze the correlation between endogenous EPO levels and electrocardiogram scatter plot changes in patients with coronary heart disease and autonomic nerve function injury. Methods: Forty-eight patients who underwent coronary arteriography (CAG) inspection due to chronic coronary heart diseases were selected from July 2015 to October 2015. All of them were evaluated by the Ewing standard autonomic nervous function test, and were divided into Ewing(+) group and Ewing(-) group according to the results of the test. The clinical data of the patients was collected and venous blood was extracted to detect EPO level. Results: The EPO level of Ewing (+) group ((13±3) mIU/ml) was significantly higher than that of Ewing (-) group ((10±3) mIU/ml). The Lorenz scatter plot comet shapes between the two groups had a significant difference. As for the quantitative indicators of Lorenz scatterplot, length of the Ewing (+) group ((147±22) ms) was shorter than that of the Ewing (-) group ((164±24) ms) and there was no significant differences in the width between the two groups. EPO level was negatively correlated with length in both groups (r=-0.427, P=0.002), but not with width (r=0.091, P=0.539). Binary logistic regression analysis showed that EPO (OR=1.394) and diastolic blood pressure (OR=1.091) were risk factors for autonomic nervous function damage. Length (OR=0.934) was a protective factor for autonomic nervous function. ROC curve analysis showed that the area under the EPO curve was 0.737 and that under the length curve was 0.719. Conclusions: The endogenous EPO levels are associated with the changes of electrocardiogram scatter plot in patients with coronary heart disease and autonomic nerve function injury. EPO and length of scatter plot have the similar diagnostic value on predicting of autonomic nerve function injury.
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Affiliation(s)
- Y M Li
- Department of Cardiology, the Affiliated Hospital of Taishan Medical University, Taian 271000, China
| | - L Xiang
- Department of Neurology, the People's Hospital of Sishui County, Sishui 273200, China
| | - Q Zhao
- Department of Cardiology, the Affiliated Hospital of Taishan Medical University, Taian 271000, China
| | - J Zhao
- Department of Cardiology, the Affiliated Hospital of Taishan Medical University, Taian 271000, China
| | - X X Xu
- Department of Cardiology, the Affiliated Hospital of Taishan Medical University, Taian 271000, China
| | - Q Q Lin
- Department of Cardiology, the Affiliated Hospital of Taishan Medical University, Taian 271000, China
| | - C Zhang
- Department of Cardiology, the Affiliated Hospital of Taishan Medical University, Taian 271000, China
| | - Q Xiao
- Department of Cardiology, the Affiliated Hospital of Taishan Medical University, Taian 271000, China
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Wang B, Xu XX, Wen HX, Hao HY, Yang ZQ, Shi XH, Fu ZD, Wang XF, Zhang F, Wang B, Wang SP. [Influencing factors for non/low-response to hepatitis-B vaccine in infants of HBsAg positive mothers]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 38:911-915. [PMID: 28738465 DOI: 10.3760/cma.j.issn.0254-6450.2017.07.013] [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 influencing factors for non/low-response to hepatitis B vaccine in infants of HBsAg-positive mothers. Methods: A total of 286 HBsAg-positive pregnant women and their infants were recruited from the Third People's Hospital of Taiyuan during July 2011 to January 2013. The infants were immunized with hepatitis B vaccine according to the 0-1-6 month vaccination schedule and followed up for 12 months. The serum HBV DNA level of mothers, neonates and infants were detected by electro chemilum inescence immunoassay kits and fluorescene quantiative polymerase chain rection. Results: Among 286 infants, the rate of non/low-response to hepatitis B vaccine was 18.53% (53/286). Non-conditional logistic regression analysis indicated that the mother's HBV DNA level ≥1×10(7) copies/ml (OR=2.592, 95%CI: 1.121-5.996) and natural birth (OR=1.932, 95%CI: 1.021-3.654) were the risk factors for non/low-response to hepatitis B vaccine, the risks were 2.592 times and 1.932 times higher compared with the infants whose mothers were HBV DNA negative and the infants whose mothers had cesarean delivery. There was no multiplicative or additive interaction between high HBV DNA load and natural birth (OR=1.055, 95%CI: 0.209-5.321), (RERI=1.617, 95%CI: -4.038-7.272; AP=0.364, 95%CI: -0.527-1.225; SI=1.195, 95%CI: 0.270-13.135). After stratified analysis of mother's HBV DNA level, delivery mode of mothers was not associated with non/low-response of their infants. Conclusion: The mother's load of HBV DNA≥1×10(7) copies/ml might be the factor for non/low-response to hepatitis B vaccine in infants of HBsAg positive mothers.
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Affiliation(s)
- B Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X X Xu
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - H X Wen
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - H Y Hao
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - Z Q Yang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X H Shi
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - Z D Fu
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X F Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - F Zhang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - B Wang
- The Third People's Hospital of Taiyuan, Taiyuan 030001, China
| | - S P Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
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Yang ZQ, Hao HY, Shi XH, Fu ZD, Zhang F, Wang XF, Xu XX, Wang B, Wen HX, Feng SY, Wang B, Wang SP. [Relationship between the HBsAg-positive infection status of mothers and the non/low-response to hepatitis B vaccine of their infants]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 39:805-809. [PMID: 29936751 DOI: 10.3760/cma.j.issn.0254-6450.2018.06.021] [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 relationship between the status of HBsAg-positive infection of mothers and the non/low-response to hepatitis B vaccine of their infants. Methods: A total of 225 pairs of mothers and their infants were recruited in our cohort from June 2011 to July 2013. Infants were given three doses of hepatitis B vaccine at hour 24, first month and month 6(t)h respectively and were followed up for one year after birth. HBV serological markers and HBV DNA in the peripheral blood of both mothers and infants were detected by Electro-chemiluminescence immunoassay and fluorescence quantitative Polymerase Chain Reaction. Results: Six HBV infection models were detected in HBsAg-positive mothers, and "HBsAg (+), HBeAg (+), anti-HBc (+)" (model one) and "HBsAg (+), anti-HBe (+), anti-HBc (+)" (model two) accounted for 92.5%(208/225) of all the models. Rate of non/low-response to hepatitis B vaccine in infants born to mothers in model one was lower than those in model two, the differences are statistically significant (χ(2)=4.80, P=0.029). The rate of non/low-response to hepatitis B vaccine in infants showed a downward trend with the rising of HBeAg level in their mothers (χ(2)=4.86, P=0.028). Results from the unconditional logistic regression analysis showed that the HBeAg of the HBsAg-positive mothers was significantly correlated with the low risk of non/low-response to hepatitis B vaccine in infants (OR=0.598, 95%CI: 0.378-0.947). The positive rate of serum HBV DNA in HBsAg-positive mothers was 54.2%, while the rate of non/low-response to hepatitis B vaccine in infants born to HBV DNA positive mothers was similar to those infants born to HBV DNA negative mothers (χ(2)=0.22, P=0.640). Conclusions: "HBsAg (+), HBeAg (+), anti-HBc (+)" and "HBsAg (+), anti-HBe(+), anti-HBc (+)" were the common models seen in HBsAg-positive mothers, and the rate of non/low-response to hepatitis B vaccine was different between the two models. HBeAg of HBsAg-positive mothers might have positive effects on the immune response to hepatitis B vaccine in infants but the mechanisms remained not clear. HBV DNA of the HBsAg-positive mothers did not seem to be correlated with the immune response to hepatitis B vaccine in infants.
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Affiliation(s)
- Z Q Yang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - H Y Hao
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X H Shi
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - Z D Fu
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - F Zhang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X F Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X X Xu
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - B Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - H X Wen
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - S Y Feng
- Department of Obstetrics and Gynecology, the Third People Hospital of Taiyuan City, Taiyuan 030012, China
| | - B Wang
- Department of Obstetrics and Gynecology, the Third People Hospital of Taiyuan City, Taiyuan 030012, China
| | - S P Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
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Yang LM, Zhao J, Wang HT, Xu XX, JIiao YM, Ding RG. [The protective effect of N-acetylcysteine on acute lung injury induced by PFIB inhalation]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 35:481-486. [PMID: 29081093 DOI: 10.3760/cma.j.issn.1001-9391.2017.07.001] [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 study the protective effect of N-acetylcysteine on acute lung injury induced by PFIB inhalation and its mechanism. Methods: Survival experiment: 48 male ICR (CD-1) mice were randomly divided into 4 groups, i. e., PFIB control group, NAC prevention group, NAC treatment group, and NAC prevention + treatment group, each group contains 12 animals. The mice of PFIB C group were exposed to PFIB without any treatment. The mice of NAC P group were exposed to PFIB 30min after NAC administration. The mice of NAC T group were exposed to PFIB 1h before NAC administration, The mice of NAC P+T group were administrated with NAC twice (30 min before and 1h after PFIB inhalation) . 150 mg/kg NAC was given by each time. The 7 days survival rate of mice after lethal dose PFIB exposure was observed. 18 male Wistar rats were randomly divided into 3 groups i.e., normal control group (N-C) , PFIB control group (PFIB-C) and NAC prevention group (NAC-P) , with each group contains 6 animals in the second experiment. The rats of N-C group received no treatment. The rats of NAC-P group and PFIB-C group were exposed to PFIB 30min after treatment of NAC (420 mg/Kg, i.p.) and saline, respectively. The respiratory functions of animals were tested before and 24 h after PFIB inhalation. The arterial blood gas was analyzed after rats were anesthetized 24 hours post sublethal dose PFIB exposure. Then samples of BALF, plasma and lung tissue were collected. Wet lung/body weight ratio, protein and phospholipid content in BALF, and T-SOD, GSH, GSH-Px in plasma and lung tissue were measured. The expression of Peroxiredoxin 2 was detected by Westernblot assay. Results: NAC prevention can significantly improve the survival of mice exposed to a lethal dose PFIB while NAC treatment is ineffective. Severe lung edema was observed in rats 24 h after PFIB exposure. Compared to N-C group, the wet lung/body weight ratio, protein and phospholipid content in BALF, and respiratory rate of PFIB control group all increased significantly (P<0.01) . The arterial oxygen partial pressure (PaO(2)) reduced significantly (P<0.05) . The GSH-Px activity in lung tissue reduced significantly (P<0.01) while the expression of Peroxiredoxin 2 increased significantly (P<0.01) . NAC prophylaxis significantly reduced the wet lung/body weight ratio, protein and phospholipid content in BALF, respiratory rate of rats exposed to PFIB (P<0.01) . Compared with PFIB-C group, the PaO(2) (P<0.05) and the activity of GSH-Px (P<0.01) and the expression of Peroxiredoxin 2 in lung tissue (P<0.01) were increased significantly. Conclusion: Acute lung injury induced by PFIB inhalation is related to oxidative stress caused by the stimulation to lung. induced and pulmonary subjected to stimulate the generation of exposure, NAC prevention can regulation of the redox system in lung tissue and protect target organ of the treated animals effectively.
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Affiliation(s)
- L M Yang
- Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing 100850, China
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Liu C, Li HW, Wang L, Zhu L, Jiang XF, Yang MJ, Li B, Zhang C, Yang HF, Xu XX. Optimal parameters and location for diffusion tensor imaging in the diagnosis of carpal tunnel syndrome: a meta-analysis. Clin Radiol 2018; 73:1058.e11-1058.e19. [PMID: 30314809 DOI: 10.1016/j.crad.2018.08.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 08/28/2018] [Indexed: 12/31/2022]
Abstract
AIM To assess the diagnostic value of the apparent diffusion coefficient (ADC) and fractional anisotropy (FA) of diffusion tensor imaging (DTI) at several anatomical locations in patients with carpal tunnel syndrome (CTS) to explore the optimal parameters and measurement location. MATERIALS AND METHODS A search was conducted using the PubMed, EBSCO, Ovid, Web of Science, and Cochrane databases to identify articles relevant to this study published before September 2017. Studies were selected and included according to strict eligibility criteria. Mean differences (MD) and 95% confidence intervals (CIs) were used to compare FA and ADC values between CTS patients and healthy subjects. Potential publication bias was investigated. RESULTS Eleven studies involving 349 CTS wrists and 278 controls were selected for the meta-analysis. A notable MD: was found for lowered FA at the level of the pisiform bone for CTS versus controls (MD: -0.11, 95% confidence interval [CI]: -1.14 to -0.07, z=5.83, p<0.001). A higher ADC was found at the pisiform bone and hamate bone levels for CTS versus controls (P: MD: 0.15, 95% CI: 0.10 to 0.20, z=5.98, p<0.001, H: MD: 0.15; 95% CI: 0.09 to 0.21, z=4.67, p<0.001). CONCLUSIONS The meta-analysis demonstrated a significant FA reduction and ADC increase in CTS patients. This result supports the use of DTI parameters in differentiating CTS patients from health subjects. The anatomical site for FA at the pisiform and ADC at the pisiform and hamate levels were more accessible than other sites for the diagnosis of CTS patients.
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Affiliation(s)
- C Liu
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China
| | - H W Li
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China
| | - L Wang
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China
| | - L Zhu
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China
| | - X F Jiang
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China
| | - M J Yang
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China
| | - B Li
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China
| | - C Zhang
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China
| | - H F Yang
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China
| | - X X Xu
- Sichuan Key Laboratory of Medical Imaging and Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong City 637000, Sichuan Province, China.
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Hao HY, Yang ZQ, Xu XX, Wang XF, Wang B, Shi XH, Fu ZD, Wang B, Wang SP. [Relationship between HBeAg from HBsAg positive mothers and regulatory T cells in neonates and its influence on HBV intrauterine transmission]. Zhonghua Liu Xing Bing Xue Za Zhi 2018; 38:1410-1414. [PMID: 29060990 DOI: 10.3760/cma.j.issn.0254-6450.2017.10.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the relationship between HBeAg in HBsAg positive mothers and CD(4)(+)CD(25)(+)Foxp3(+)regulatory T cells (Treg) in newborns, as well as how they would influence the increasing risk on HBV intrauterine transmission. Methods: We collected information on general demographic characteristics and delivery on 270 HBsAg positive mothers and their newborns from the Third People's Hospital of Taiyuan. Fluorescence quantitative polymerase chain reaction (FQ-PCR) and chemiluminescence immunoassay (CLIA) were used to detect HBV DNA and HBV serological markers in peripheral blood from both mothers and neonates. The expression of Treg and other immune cells in peripheral blood of neonates were detected with flow cytometry (FCM). Results: Maternal HBeAg positive rates were associated with an increased risk of intrauterine transmission (OR=4.08, 95%CI: 1.89-8.82). Rates of Treg in newborns born to HBsAg-positive mothers were higher than that of the negative group (Z=2.29, P=0.022). Each pair of the subjects was assigned to five different groups according to the HBeAg titers of mothers. Frequencies of both Treg and HBeAg in newborns and HBV DNA in mothers between the above said 5 groups showed similar trends of changing patterns and the differences between groups were statistically significant(χ(2)=18.73, P<0.001; χ(2)=181.60, P<0.001; χ(2)=183.09, P<0.001). Results from partial correlation analysis showed that after adjusting for neonatal HBeAg and maternal HBV DNA, mother's HBeAg titers were positively related to the percentage of Treg in their newborns (r(s)=0.19, P=0.039). In addition, the frequencies of Treg were negatively correlated with pDC and CD(4)(+) T cell in their newborns (r(s)=-0.21, P=0.017; r(s)=-0.23, P=0.009). Conclusion: HBeAg from HBsAg positive mothers might have inhibited the function of neonatal DC cells and T cells to reduce the immune response to HBV by up-regulating the proportion of Treg and finally increased the risk of HBV intrauterine transmission.
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Affiliation(s)
- H Y Hao
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - Z Q Yang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X X Xu
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X F Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - B Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X H Shi
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - Z D Fu
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - B Wang
- Department of Obstetrics and Gynecology, the Third People's Hospital of Taiyuan, Taiyuan 030001, China
| | - S P Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
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Wang L, Ren L, Mitchell D, Casillas-Garcia G, Ren W, Ma C, Xu XX, Wen S, Wang F, Zhou J, Xu X, Hao W, Dou SX, Du Y. Enhanced energy transfer in heterogeneous nanocrystals for near infrared upconversion photocurrent generation. Nanoscale 2017; 9:18661-18667. [PMID: 29164217 DOI: 10.1039/c7nr07010a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The key to produce inorganic heterogeneous nanostructures, and to integrate multiple functionalities, is to enhance or at least retain the functionalities of different components of materials. However, this ideal scenario is often deteriorated at the interface of the heterogeneous nanostructures due to lattice mismatches, resulting in downgraded performance in most hybrid nanomaterials. Here, we report that there is a narrow window in controlling temperature in a Lewis acid-base reaction process to facilitate epitaxial alignment during the synthesis of hybrid nanomaterials. We demonstrate a perfectly fused NaYF4:Yb,Tm@ZnO heterogeneous nanostructure, in which the semiconductor ZnO shell can be epitaxially grown onto lanthanide-doped upconversion nanoparticles. By achieving a matched crystal lattice, the interface defects and crystalline grain boundaries are minimized to enable more efficient energy transfer from the upconversion nanoparticles to the semiconductor, resulting in both enhanced upconversion luminescence intensity and superior photoelectrochemical properties. This strategy provides an outstanding approach to endow lanthanide-doped upconversion nanoparticles with versatile properties.
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Affiliation(s)
- L Wang
- Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, Wollongong, NSW 2500, Australia.
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Yang L, Lin CJ, Jia HM, Wang DX, Ma NR, Sun LJ, Yang F, Xu XX, Wu ZD, Zhang HQ, Liu ZH. Is the Dispersion Relation Applicable for Exotic Nuclear Systems? The Abnormal Threshold Anomaly in the ^{6}He+^{209}Bi System. Phys Rev Lett 2017; 119:042503. [PMID: 29341746 DOI: 10.1103/physrevlett.119.042503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Indexed: 06/07/2023]
Abstract
The threshold anomaly of the phenomenological potential has been known for a long time in nuclear reactions at energies around the Coulomb barrier, where the connection between the real and imaginary potentials is well described by the dispersion relation. However, this connection is not clear yet for some weakly bound nuclear systems, especially for reactions induced by exotic radioactive nuclei. In this study, precise optical potentials of the halo nuclear system ^{6}He+^{209}Bi were extracted via ^{208}Pb(^{7}Li,^{6}He) transfer reactions with energies measured downward to the extremely sub-barrier region. The real potential presents a bell-like shape around the barrier as a normal threshold anomaly in tightly bound nuclear systems. However, the imaginary potential shows an abnormal behavior: it increases first with energy decreasing below the barrier and then falls quickly down to 0. It is the first time the threshold of the imaginary potential has been determined in an exotic nuclear system. Moreover, experimental results show the dispersion relation is not applicable for this system, which may be a common phenomenon for exotic nuclear systems. We discuss possible explanations for such a peculiar behavior, but further study is still desired for the underlying physics.
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Affiliation(s)
- L Yang
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - C J Lin
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - H M Jia
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - D X Wang
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - N R Ma
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - L J Sun
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - F Yang
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - X X Xu
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - Z D Wu
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - H Q Zhang
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
| | - Z H Liu
- China Institute of Atomic Energy, P.O. Box 275(10), Beijing 102413, China
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Xu XX, Wang B, Wang XF, Wen HX, Zhang F, Yang ZQ, Hao HY, Wang T, Shi XH, Fu ZD, Wang B, Wang SP. [Effect of telbivudine on infants born to HBsAg-positive mothers with non-/hypo-response to hepatitis B vaccine during their second and third trimesters of pregnancy]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:168-172. [PMID: 28231660 DOI: 10.3760/cma.j.issn.0254-6450.2017.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the effect of telbivudine treatment in a prevention program on infants born to HBsAg-positive mothers with non-/hypo-responsiveness to hepatitis B vaccine. Methods: A retrospective cohort study with a total of 321 HBsAg-positive pregnant women and their infants enrolled, was conducted. The mothers were recruited from the Third People' s Hospital of Taiyuan, from July 2011 to January 2013. According to the situation of telbivudine intake in second and third trimesters of pregnancy, the participants were divided into two groups: with telbivudine-treated or as control. The neonates were followed up till the age of 12 months. Maternal, neonatal and infantile HBV-M together with HBV DNA in serum were measured using the electro-chemiluminescence immuno-assay (ECLIA) kits and fluorescence quantitative polymerase chain reaction (FQ-PCR) assay, respectively. Results: The rate of non-/hypo-response was 17.99%. After adjusting the potential confounding factors, the telbivudine treatment on HBsAg-positive mothers in the second and third trimesters of pregnancy seemed as the protective factor for non-/hypo-response to hepatitis B vaccine in infants (aRR=0.119, 95% CI: 0.014-0.974). Levels of IFN-γ and IL-10 in telbivudine-treated group were higher than those in the controls (aRR=8.684, 95%CI: 1.977-38.140; aRR=5.330, 95% CI: 1.278-22.236). When the serum levels of IFN-γ and IL-10 in neonatal peripheral blood were higher than 228.47 pg/ml and 174.05 pg/ml respectively, the infants were less likely to be non-/hypo-responsive to the hepatitis B vaccine (aRR=0.300, 95%CI: 0.105-0.857) (aRR= 0.104, 95% CI: 0.030-0.354). Conclusion: Telbivudine treatment provided for the HBsAg-positive mothers in second and third trimesters of pregnancy were less likely to develop non-/low-responsive to hepatitis B vaccine in infants since IFN-γ and IL-10 might have played a vital role in this process.
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Affiliation(s)
- X X Xu
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - B Wang
- Department of Obstetrics and Gynecology, the Third People's Hospital of Taiyuan, Taiyuan 030001, China
| | - X F Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - H X Wen
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - F Zhang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - Z Q Yang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - H Y Hao
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - T Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - X H Shi
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - Z D Fu
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - B Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
| | - S P Wang
- Department of Epidemiology, Shanxi Medical University, Taiyuan 030001, China
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Xu XX, Cao Y, Fu KY, Xie QF. [Changes of productions of energy metabolism in masseter of rats induced by occlusal interference]. Beijing Da Xue Xue Bao Yi Xue Ban 2017; 49:25-30. [PMID: 28202999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
OBJECTIVE To investigate the effect of occlusal interference on the energy metabolism of masticatory muscle by studying the changes of adenosine triphosphate (ATP), adenosine diphosphate (ADP), inosine monophosphate (IMP), phosphocreatine, creatine, lactate and pH level in masseter muscles of rats after occlusal interference. METHODS Fifty male Sprague-Dawley rats were randomly assigned into experimental group (n=40) and control group (n=10). In experimental group, 0.4 mm thick metal crown was cemented to the upper right first molar of the rat, and maintained for 3, 7, 10, 14 d separately (n=10 for each time point). No occlusal interference was applied for control group. Bilateral masseter muscles of all the rats were acquired under general anesthesia. The samples of 5 rats in each group were fully homogenized with 0.4 mol/L perchlorate (10 mL/g). The homogenates were centrifuged, filtered and analyzed for ATP, ADP, IMP, phosphocreatine, creatine and lactate content by high performance liquid chromatography. The other samples in each group were mixed with homogenates containing 5 mmol/L sodium iodoacetate (10 mL/g), then homogenized and measured for pH value by pH meter in thermostatic water bathunder 37 degrees centigrade. RESULTS Compared with control group, ATP content in bilateral masseter of the rats increased 3 d after occlusal interference [right side:(5.36±0.13) μmol/g,left side:(5.77±0.25) μmol/g] (P<0.05), and back to normal on 7, 10 and 14 d. There was an increase in IMP [right side:(0.21±0.03) μmol/g,left side:(0.19±0.03) μmol/g]and creatine content [right side:(24.76±2.94) μmol/g,left side:(27.75±2.23) μmol/g]in bilateral masseter of the rats 7 d after occlusal interference (P<0.05) and no difference was detected on 3, 10, and 14. Phosphocreatine content in bilateral masseter started to decline 7 d after occlusal interference and maintained the low level on 10 and 14 d [right side:(10.70±0.71) μmol/g, (11.57±0.52) μmol/g, (10.74±1.39) μmol/g, left side:(10.05±0.57) μmol/g, (10.75±1.12)μmol/g, (10.61±1.15) μmol/g](P<0.05). No change of ADP, lactate or pH level in bilateral muscles of the rats after occlusal interference was observed (P>0.05). CONCLUSION Occlusal interference influences the content of energy metabolites in masticatory muscle of rats, which may be related to the pathological process of masticatory muscles induced by occlusal interference, such as muscle pain, dysfunction and altered fiber architecture.
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Affiliation(s)
- X X Xu
- Department of Prosthodontics & Center for Oral and Jaw Functional Diagnosis, Treatment and Research, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081,China
| | - Y Cao
- Department of Prosthodontics & Center for Oral and Jaw Functional Diagnosis, Treatment and Research, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081,China
| | - K Y Fu
- Center for Temporomandibular Disorders and Orofacial Pain, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081,China
| | - Q F Xie
- Department of Prosthodontics & Center for Oral and Jaw Functional Diagnosis, Treatment and Research, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081,China
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Wei J, Qian XP, Zou ZY, Wang LF, Yu LX, You CW, Song Y, Lu HY, Hu WJ, Yan J, Xu XX, Chen XF, Li XY, Wu QF, Zhou Y, Zhang FL, Liu BR. [Chinese multicenter randomized trial of customized chemotherapy based on BRCA1 (breast cancer susceptibility gene 1)-RAP80 (receptor-associated protein 80) mRNA expression in advanced non-small cell lung cancer (NSCLC) patients]. Zhonghua Zhong Liu Za Zhi 2016; 38:868-873. [PMID: 27998448 DOI: 10.3760/cma.j.issn.0253-3766.2016.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: BRCA1 (breast cancer susceptibility gene 1) and RAP80 (receptor-associated protein 80) play key roles in predicting chemosensitivity of platinum and taxanes. A randomized trial was carried out to compare non-selected cisplatin-based chemotherapy with therapy customized according to BRCA1 and RAP80 expression. Methods: Advanced stage NSCLC patients whose tumor specimen was sufficient for molecular analysis were randomized (1∶3) to the control or experimental arm. Patients in the control arm received docetaxel/cisplatin; in the experimental arm, patients with low RAP80 expression received gemcitabine/cisplatin (Arm 1), those with intermediate/high RAP80 expression and low/intermediate BRCA1expression received docetaxel/cisplatin (Arm 2), and those with intermediate/high RAP80 expression and high BRCA1 expression received docetaxel alone (Arm 3). The primary end point was progression-free survival (PFS). Results: 226 patients were screened and 124 were randomized in this trial. ORR in the four subgroups was 22.6%, 48.4%, 30.3% and 19.2%, respectively (P=0.08); PFS was 4.74, 5.59, 3.78 and 2.73 months, respectively (P=0.55); and OS was 10.82, 14.44, 10.86 and 10.86 months, respectively (P=0.84). The common adverse effects included neutropenia, nausea, anemia and fatigue. Conclusions: No statistically significant difference of ORR, PFS or OS is observed in the experimental arms compared with the control arm. Patients with low RAP80 mRNA levels have a trend of better survival and higher response rate to gemcitabine/cisplatin chemotherapy.
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Affiliation(s)
- J Wei
- The Comprehensive Cancer Center, Affiliated Drum Tower Hospital to Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing 210008, China
| | - X P Qian
- The Comprehensive Cancer Center, Affiliated Drum Tower Hospital to Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing 210008, China
| | - Z Y Zou
- The Comprehensive Cancer Center, Affiliated Drum Tower Hospital to Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing 210008, China
| | - L F Wang
- The Comprehensive Cancer Center, Affiliated Drum Tower Hospital to Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing 210008, China
| | - L X Yu
- The Comprehensive Cancer Center, Affiliated Drum Tower Hospital to Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing 210008, China
| | - C W You
- Department of Oncology, Suqian General Hospital, Suqian 223800, China
| | - Y Song
- Department of Respiratory Medicine, Jinlin Hospital, Nanjing 210002, China
| | - H Y Lu
- Department of Oncology, Taizhou General Hospital, Taizhou 225300, China
| | - W J Hu
- The Comprehensive Cancer Center, Affiliated Drum Tower Hospital to Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing 210008, China
| | - J Yan
- The Comprehensive Cancer Center, Affiliated Drum Tower Hospital to Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing 210008, China
| | - X X Xu
- Department of Respiratory Medicine, Northern Jiangsu People's Hospital, Yangzhou 225001, China
| | - X F Chen
- Department of Oncology, Huaian General Hospital, Huaian 223300, China
| | - X Y Li
- Department of Oncology, Affiliated Hospital to Zhengzhou University, Zhengzhou 450052 , China
| | - Q F Wu
- Department of Oncology, Yixing General Hospital, Yixing 214200, China
| | - Y Zhou
- Department of Oncology, Yixing General Hospital, Yixing 214200, China
| | - F L Zhang
- Department of Oncology, Maanshan General Hospital, Maanshan 243000, China
| | - B R Liu
- The Comprehensive Cancer Center, Affiliated Drum Tower Hospital to Medical School of Nanjing University & Clinical Cancer Institute of Nanjing University, Nanjing 210008, China
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Li L, Leng JH, Shi JH, Zhang JJ, Jia SZ, Li XY, Dai Y, Zhang JR, Li T, Xu XX, Liu ZZ, You SS, Chang XY, Lang JH. [A prospective study on the effects of levonorgestrel-releasing intrauterine system for adenomyosis with menorrhagia]. Zhonghua Fu Chan Ke Za Zhi 2016; 51:424-30. [PMID: 27356477 DOI: 10.3760/cma.j.issn.0529-567x.2016.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate treatment effects of levonorgestrel-releasing intrauterine system (LNG-IUS) for adenomyosis with menorrhea in a prospective study. METHODS From December 2006 to December 2014, patients of symptomatic adenomyosis diagnosed by transvaginal ultrasound in outpatient or inpatient clinics of Peking Union Medical College Hospital were given the treatment of LNG-IUS. Before and after placement of LNG-IUS, all the patients' parameters were recorded prospectively, including scores of menstruation blood loss, carrying status of IUS, symptoms and scores of dysmenorrhea, biochemical indicators, physical parameters, menstruation patterns and adverse effects. Changes of pictorial chart scores of menstruation and distribution of anemia during follow-up were analyzed. RESULTS Totally 1 100 women meets inclusion criteria, among which 618 cases (56.18%, 618/1 100) had severe menorrhea, with median follow-up period of 28 months (range 1- 60 months), and accumulative carrying rate of 66% at 60 months follow-up. After placement of LNG-IUS, compared with baselines, pictorial chart scores and ratio of menorrhea had decreased significantly (all P<0.01), the scroes of menstruation were 157±34, 94±35, 70±33, 67±18, 67±20, 65±19, 66±19, 65±21 at 0, 3, 6, 12, 24, 36, 48 and 60 months respectively. During 24 months after placement of LNG-IUS, pictorial chart scores and distribution of anemia had improved significantly compared with preceding period (all P<0.01). We found no dependent factors predicting improvement of pictorial chart scores of menorrhea, which was neither relevant with simultaneous changes of menstruation patterns nor adverse effects (all P>0.05). CONCLUSIONS LNG-IUS is effective for adenomyosis of menorrhea. Improvement of menstruation blood loss is independent on patients characters, menstruation patterns or adverse effects.
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Affiliation(s)
- L Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
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Li L, Leng JH, Dai Y, Zhang JJ, Jia SZ, Li XY, Shi JH, Zhang JR, Li T, Xu XX, Liu ZZ, You SS, Chang XY, Lang JH. [A prospective cohort study on effects of levonorgestrel-releasing intrauterine system for adenomyosis with severe dysmenorrhea]. Zhonghua Fu Chan Ke Za Zhi 2016; 51:345-51. [PMID: 27256441 DOI: 10.3760/cma.j.issn.0529-567x.2016.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate treatment effects of levonorgestrel-releasing intrauterine system (LNG-IUS) for adenomyosis with severe dysmenorrhea in a prospective cohort study. METHODS From December 2006 to December 2014, patients of symptomatic adenomyosis diagnosed by transvaginal ultrasound in outpatient or inpatient clinics of Peking Union Medical College Hospital were given the treatment of LNG-IUS. Before and after placement of LNG-IUS, all the patients' parameters were recorded prospectively, including symptoms and scores of dysmenorrhea, menstruation scores, biochemical indicators, physical parameters, carrying status of LNG-IUS, menstruation patterns and adverse effects. Changes of scores and patterns of pain during follow-up were analyzed. RESULTS Totally 1 100 women meets inclusion criteria, among which 640 cases (58.18%, 640/1 100) had severe dysmeorrhea, with median follow-up period of 35 months (range 1-60 months), and accumulative carrying rate of 65% at 60 months follow-up. After placement of LNG-IUS, scores of pain and ratio of severe dysmenorrhea had decreased significantly compared with baselines (all P<0.01), the scroes of visual analog scale (VAS) were 8.1±0.9, 5.5±2.4, 4.6±2.4, 3.3±2.2, 2.2±2.1, 2.2±1.8, 1.4±1.6 and 1.3±1.3 at 0, 3, 6, 12, 24, 36, 48 and 60 months respectively. During 36 months after placement of LNG-IUS, scores of pain had improved significantly compared with preceding period (all P<0.01). We found no universal dependent factors predicting improvement of pain, which was neither relevant with simultaneous changes of menstruation patterns nor adverse effects (all P>0.05). CONCLUSION LNG-IUS is effective for adenomyosis of severe dysmenorrhea. Improvement of pain is independent on patients characters, menstruation patterns or adverse effects.
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Affiliation(s)
- L Li
- Department of Obstetrics and Gynecology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing 100730, China
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Qin N, Liu Q, Zhang YY, Fan XC, Xu XX, Lv ZC, Wei ML, Jing Y, Mu F, Xu RF. Association of novel polymorphisms of forkhead box L2 and growth differentiation factor-9 genes with egg production traits in local Chinese Dagu hens. Poult Sci 2015; 94:88-95. [PMID: 25577797 DOI: 10.3382/ps/peu023] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Transcription factor forkhead box L2 (FOXL2) and growth differentiation factor-9 (GDF9) genes have critical roles in the regulation of hen ovarian development. In the present study, these genes were explored as possible molecular markers associated with BW, hen-housed egg production, and egg weight in Chinese Dagu hens. Samples were analyzed using the PCR-single strand conformation polymorphism (PCR-SSCP) technique followed by sequencing analysis, and two novel single nucleotide polymorphisms (SNPs) were identified within these candidate genes. Among them, an A/G transition at base position 238 in the coding region of the FOXL2 gene and a G/T transversion at base position 1609 in exon 2 of the GDF9 gene were found to be polymorphic and named SNPs A238G and G1609T, respectively. The SNP A238G (FOXL2) leads to a nonsynonymous substitution (isoleucine77-to-valine), and when the 360 Dagu hen samples were divided into genotypes AA and AB, allele A was found to be present at a higher frequency. Furthermore, the AA genotype correlated with significantly higher hen-housed egg production at 30, 43, 57, and 66 wk of age and with a higher egg weight at 43 wk (P<0.05). For the SNP G1609T (GDF9), the hens were typed into TT and TC genotypes, with the T allele shown to be dominant. The TC genotype was also markedly correlated with higher hen-housed egg production and a higher egg weight (P<0.05). Moreover, four haplotypes were reconstructed based on these two SNPs, with the AATC haplotype found to be correlated with the highest hen-housed egg production at 30 to 66 wk of age and with higher egg weights at 43 wk (P<0.05). Collectively, the two SNPs identified in this study might be used as possible genetic molecular markers to aid in the improvement of egg production traits in chicken breeding.
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Affiliation(s)
- N Qin
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Q Liu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Y Y Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - X C Fan
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - X X Xu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 130118, Hubei, China
| | - Z C Lv
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - M L Wei
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Y Jing
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - F Mu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - R F Xu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
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Qin N, Fan XC, Zhang YY, Xu XX, Tyasi TL, Jing Y, Mu F, Wei ML, Xu RF. New insights into implication of the SLIT/ROBO pathway in the prehierarchical follicle development of hen ovary. Poult Sci 2015; 94:2235-46. [PMID: 26188027 DOI: 10.3382/ps/pev185] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Accepted: 05/19/2015] [Indexed: 01/28/2023] Open
Abstract
The SLIT/Roundabout (ROBO) pathway is involved in follicle development of mammalian ovary, and 2 secreted hormones activin A and inhibin A have potential roles in modulation of the SLIT/ROBO system, but the related actions remain poorly understood in bird. The aims of the present study were to examine the spatial and temporal expression of the SLIT ligand genes (SLIT1, SLIT2, and SLIT3) and their receptor ROBO1, ROBO2, ROBO3, and ROBO4 genes in various-sized prehierarchical follicles during hen ovary development and the effects of activin A and inhibin A on the expression of these genes in the cultured hen follicles. Our result demonstrated that the transcripts of the 3 SLIT genes were highly expressed in the developing follicles and expression patterns of the SLIT transcripts were different from those of ROBO genes detected by real-time quantitative reverse transcriptase PCR. Both SLIT and ROBO transcripts were predominantly expressed in oocytes and granulosa cells from the prehierarchichal follicles examined by in situ hybridization. The localization for SLIT and ROBO proteins was revealed by immunohistochemistry similar to the spatial distribution of their transcript. In cultured follicles (4 to 8 mm in diameter), the expression levels of SLIT and ROBO members are hormonally regulated by activin A (10 ng/mL) and/or inhibin A (20 ng/mL) after treatment for 24 h. However, the expression of only SLIT2, SLIT3, and ROBO3 mRNA presented a directly opposite response to activin A and inhibin A hormones. These results indicate that SLIT/ROBO pathway is implicated in the prehierarchical follicular development of the hen ovary by an intrafollicular autocrine and/or paracrine action, and is influenced by activin A and inhibin A hormones.
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Affiliation(s)
- N Qin
- Department of Animal Genetics, Breeding, and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - X C Fan
- Department of Animal Genetics, Breeding, and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Y Y Zhang
- Department of Animal Genetics, Breeding, and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - X X Xu
- Department of Animal Genetics, Breeding, and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China
| | - T L Tyasi
- Department of Animal Genetics, Breeding, and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - Y Jing
- Department of Animal Genetics, Breeding, and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - F Mu
- Department of Animal Genetics, Breeding, and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - M L Wei
- Department of Animal Genetics, Breeding, and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
| | - R F Xu
- Department of Animal Genetics, Breeding, and Reproduction, College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, Jilin, China
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Xu XX, Cao Y, Ding TT, Fu KY, Li Y, Xie QF. Role of TRPV1 and ASIC3 channels in experimental occlusal interference-induced hyperalgesia in rat masseter muscle. Eur J Pain 2015. [PMID: 26201614 DOI: 10.1002/ejp.758] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Masticatory muscle pain may occur following immediate occlusal alteration by dental treatment. The underlying mechanisms are poorly understood. Transient receptor potential vanilloid-1 (TRPV1) and acid-sensing ion channel-3 (ASIC3) mediate muscle hyperalgesia under various pathologic conditions. We have developed a rat model of experimental occlusal interference (EOI) that consistently induces mechanical hyperalgesia in jaw muscles. Whether TRPV1 and ASIC3 mediate this EOI-induced hyperalgesia is unknown. METHODS Rat model of EOI-induced masseter hyperalgesia was established. Real-time polymerase chain reaction, Western blot and retrograde labelling combined with immunofluorescence were performed to evaluate the modulation of TRPV1 and ASIC3 expression in trigeminal ganglia (TGs) and masseter afferents of rats after EOI. The effects of intramuscular administration of TRPV1 and ASIC3 antagonists on the EOI-induced hyperalgesia in masseter muscle were examined. RESULTS After EOI, gene expressions and protein levels of TRPV1 and ASIC3 in bilateral TGs were up-regulated. The percentage of ASIC3- (but not TRPV1-) positive neurons in masseter afferents increased after EOI. More small-sized and small to medium-sized masseter afferents expressed TRPV1 and ASIC3 separately following EOI. These changes peaked at day 7 and then returned to original status within 10 days after EOI. Intramuscular administration of the TRPV1 antagonist AMG-9810 partially reversed this mechanical hyperalgesia in masseter muscle. No improvement was exhibited after administration of the ASIC3 antagonist APETx2. Co-injection of AMG-9810 and APETx2 enhanced the effect of AMG-9810 administration alone. CONCLUSIONS Peripheral TRPV1 and ASIC3 contribute to the development of the EOI-induced mechanical hyperalgesia in masseter muscle.
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Affiliation(s)
- X X Xu
- Department of Prosthodontics, Peking University School & Hospital of Stomatology, Beijing, China.,Department of Biomedical Sciences, City University of Hong Kong, China
| | - Y Cao
- Department of Prosthodontics, Peking University School & Hospital of Stomatology, Beijing, China
| | - T T Ding
- Department of Prosthodontics, Peking University School & Hospital of Stomatology, Beijing, China
| | - K Y Fu
- Center for TMD and Orofacial Pain, Peking University School & Hospital of Stomatology, Beijing, China
| | - Y Li
- Department of Biomedical Sciences, City University of Hong Kong, China
| | - Q F Xie
- Department of Prosthodontics, Peking University School & Hospital of Stomatology, Beijing, China
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Li Y, Du Y, Luo TY, Yang HF, Yu JH, Xu XX, Zheng HJ, Li B. Usefulness of normal saline for sealing the needle track after CT-guided lung biopsy. Clin Radiol 2015; 70:1192-7. [PMID: 26175218 DOI: 10.1016/j.crad.2015.06.081] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2014] [Revised: 04/06/2015] [Accepted: 06/05/2015] [Indexed: 10/23/2022]
Abstract
AIM To determine whether the use of normal saline for sealing the needle track can reduce the incidence of pneumothorax and chest tube placement after computed tomography (CT)-guided lung biopsy. MATERIALS AND METHODS A prospective, randomised, controlled trial enrolling 322 patients was conducted. All patients were randomly assigned to one of two groups: those in whom the needle track was not sealed with normal saline (n=161, Group A) and those who did receive normal saline (n=161, Group B). CT-guided biopsy was performed with coaxial technique. Normal saline, which ranged from 1-3 ml, was injected while the trocar needle was being withdrawn. Patient characteristics, lesion, and procedure variables were analysed as potential risk variables for occurrence of pneumothorax and chest tube placement. RESULTS The incidence of pneumothorax was 26.1% in Group A and 6.2% in Group B (p<0.001). Nine patients in Group A and one patient in Group B required chest tube placement (p=0.010). Using multiple logistic regression analysis, smaller lesion size, greater needle-pleural angle, longer lesion-pleural distance, presence of emphysema, and no sealing the needle track with normal saline were significantly associated with an increased risk of pneumothorax, and that the latter three factors were also associated with an increased risk of pneumothorax requiring chest tube placement. CONLUSION Normal saline for sealing the needle track significantly reduces the incidence of pneumothorax and prevents subsequent chest tube placement after CT-guided lung biopsy.
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Affiliation(s)
- Y Li
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Chongqing City, 400016, China; Department of Radiology, The Affiliated Hospital of North Sichuan Medical College, 63 Wenhua Road, Nanchong City, Sichuan Province, 637000, China
| | - Y Du
- Department of Radiology, The Affiliated Hospital of North Sichuan Medical College, 63 Wenhua Road, Nanchong City, Sichuan Province, 637000, China
| | - T Y Luo
- Department of Radiology, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Chongqing City, 400016, China.
| | - H F Yang
- Department of Radiology, The Affiliated Hospital of North Sichuan Medical College, 63 Wenhua Road, Nanchong City, Sichuan Province, 637000, China
| | - J H Yu
- Department of Ultrasound, The Affiliated Hospital of North Sichuan Medical College, 63 Wenhua Road, Nanchong City, Sichuan Province, 637000, China
| | - X X Xu
- Department of Radiology, The Affiliated Hospital of North Sichuan Medical College, 63 Wenhua Road, Nanchong City, Sichuan Province, 637000, China
| | - H J Zheng
- Department of Radiology, The Affiliated Hospital of North Sichuan Medical College, 63 Wenhua Road, Nanchong City, Sichuan Province, 637000, China
| | - B Li
- Department of Radiology, The Affiliated Hospital of North Sichuan Medical College, 63 Wenhua Road, Nanchong City, Sichuan Province, 637000, China
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Li Y, Du Y, Yang HF, Yu JH, Xu XX. Re: CT-guided percutaneous core needle biopsy for small (≤20 mm) pulmonary lesions. A reply. Clin Radiol 2013; 68:e354. [PMID: 23510621 DOI: 10.1016/j.crad.2013.02.001] [Citation(s) in RCA: 2] [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] [Received: 02/02/2013] [Accepted: 02/06/2013] [Indexed: 10/27/2022]
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Kruper L, Xu XX, Bernstein L, Henderson K. Abstract PD08-02: Disparities in the Utilization of Reconstruction after Mastectomy: The California Teachers Study. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-pd08-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: For breast cancer patients undergoing mastectomy, factors such as insurance status, race/ethnicity, age, and type of hospital influence whether post-mastectomy reconstruction (PMR) is performed. This study was undertaken to determine if additional patient variables and clinicopathologic features also influence the utilization of PMR using the California Teachers Study (CTS).
Methods: Patients were identified from the CTS, a cohort of approximately 133,000 female public school teachers and administrators, followed prospectively from 1995 forward to investigate exposures associated with incident cancer and other outcomes. All in situ and invasive breast cancers were identified through linkage with the California Cancer Registry, as well as with the California Office of Statewide Health Planning and Development (OSHPD) hospital discharge database to determine the rates of mastectomy with and without reconstruction. Patterns in PMR rates were examined by calendar year, age, race/ethnicity, type of insurance, type of hospital, tumor stage, body mass index (BMI), family history of breast cancer (FH), smoking history, physical activity, and prior breast implant status using a chi-square test. Univariable and multivariable-adjusted odds ratios (OR) with 95% confidence intervals (CI) were estimated for relative odds of immediate reconstruction vs. mastectomy only.
Results: During follow-up, 1,253 CTS participants with incident breast cancer underwent mastectomy with (N = 368) and without (N = 885) reconstruction. In multivariable stepwise logistic regression analyses, calendar year, age, type of insurance, tumor stage, and prior breast implant were statistically significantly associated with use of reconstruction. The proportion of patients undergoing immediate PMR increased from 21.8% during 1995–1999 to 26.4% during 2005–2009. A statistically significant dose-response was apparent between older age at surgery and decreased likelihood of post-mastectomy reconstruction (Ptrend<0.001). Race/ethnicity was not significantly associated with the use of PMR because the majority of patients were non-Hispanic white (89.5%). Most participants either had private insurance (56.8%) or Medicare (42.4%); those with private insurance were twice as likely to undergo PMR compared to patients with Medicare (OR 2.23: 95%CI 1.25–4.00, p = 0.01). Compared to participants with in situ and stage I breast cancer combined, participants with stage II or stage III breast cancer had one-third to one-half lower odds of postmastectomy reconstruction relative to mastectomy only (ORstageII = 0.67, 95% CI = 0.49–0.90, p = 0.01; ORstageIII=0.47, 95% CI=0.29–0.77, p = 0.002). Participants with a prior history of a breast implant were 7 times more likely to undergo PMR than participants with no such history (OR 7.14: 95%CI 2.38–21.41, p < 0.001).
Conclusions: In the CTS population, having a prior breast implant and lower tumor stage were additional variables associated with increased odds of PMR. This study validates previous studies which have shown that private insurance and younger age are associated with the use of reconstruction after mastectomy. Patient and health care provider education is warranted to ensure that all patients undergoing mastectomy are offered and have access to PMR.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr PD08-02.
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Affiliation(s)
- L Kruper
- City of Hope Cancer Center, Duarte, CA
| | - XX Xu
- City of Hope Cancer Center, Duarte, CA
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Meng ZX, Zeng QT, Sun ZZ, Xu XX, Wang YS, Zheng W, Zheng YF. Immobilizing natural macromolecule on PLGA electrospun nanofiber with surface entrapment and entrapment-graft techniques. Colloids Surf B Biointerfaces 2012; 94:44-50. [PMID: 22326650 DOI: 10.1016/j.colsurfb.2012.01.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2011] [Revised: 12/30/2011] [Accepted: 01/13/2012] [Indexed: 11/30/2022]
Abstract
Surface entrapment is a convenient method to immobilize the natural macromolecules on the surface of synthetic polymers. In this study, the gelatin modified and sodium alginate/gelatin modified PLGA nanofibrous membranes were fabricated via surface entrapment and entrapment-graft techniques. The surface morphology of the each single modified PLGA nanofiber was as smooth as that of untreated PLGA nanofibers. The results of water angle contact measurements and tensile tests showed that the surface entrapment cannot only improve the hydrophilicity but also enhance mechanical properties of the modified nanofibrous membranes. In addition, the sodium alginate/gelatin modified electrospun PLGA nanofibrous membrane exhibited higher hydrophilicity and better biocompatibility than the simply gelatin modified PLGA nanofibrous membrane, which suggested the surface entrapment is a facile and efficient approach to surface modification for electrospun nanofibours membranes.
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Affiliation(s)
- Z X Meng
- Center for Biomedical Materials and Engineering, Harbin Engineering University, Harbin 150001, China
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Cheng YX, Qi XY, Huang JL, Hu M, Zhou LM, Li BS, Xu XX. Toll-like receptor 4 signaling promotes the immunosuppressive cytokine production of human cervical cancer. EUR J GYNAECOL ONCOL 2012; 33:291-294. [PMID: 22873102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVES To investigate the expression of TLR-4 (toll-like receptor) on human cervical cancer and find the biological function of the TLR-4 signal system. METHODS The immunohistochemistry method was performed to study the protein expression and distribution of TLR-4. The viability of HeLa cells was determined by cell viability assay. Cell proliferation was detected by FCM, ELISA and Western blot were used to observe the gene and protein expression of IL-6 and TGF-beta1 in Hela cell lines. RESULTS TLR-4 was over-expressed in cervix cancer, and its activation by LPS promotes proliferation and anti-apoptosis in Hela cells in vitro. Moreover the cell line proliferation increased in a dose- and time-dependent manner. The production of IL-6 and TGF-beta1 were promoted through the activation of the NF-kappaB signaling pathway.
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Affiliation(s)
- Y X Cheng
- Department of Gynaecology and Obstetrics, Renming Hospital of Wuhan University, Hubei, Wuhan, China
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31
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Smith ER, Capo-chichi CD, He J, Smedberg JL, Yang DH, Prowse AH, Godwin AK, Hamilton TC, Xu XX. Disabled-2 mediates c-Fos suppression and the cell growth regulatory activity of retinoic acid in embryonic carcinoma cells. J Biol Chem 2001; 276:47303-10. [PMID: 11577091 DOI: 10.1074/jbc.m106158200] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
F9 embryonic stem cell-like teratocarcinoma cells are widely used to study early embryonic development and cell differentiation. The cells can be induced by retinoic acid to undergo endodermal differentiation. The retinoic acid-induced differentiation accompanies cell growth suppression, and thus, F9 cells are also often used as a model for analysis of retinoic acid biological activity. We have recently shown that MAPK activation and c-Fos expression are uncoupled in F9 cells upon retinoic acid-induced endodermal differentiation. The expression of the candidate tumor suppressor Disabled-2 is induced and correlates with cell growth suppression in F9 cells. We were not able to establish stable Disabled-2 expression by cDNA transfection in F9 cells without induction of spontaneous cell differentiation. Transient transfection of Dab2 by adenoviral vector nevertheless suppresses Elk-1 phosphorylation, c-Fos expression, and cell growth. In PA-1, another teratocarcinoma cell line of human origin that has no or very low levels of Disabled-2, retinoic acid fails to induce Disabled-2, correlating with a lack of growth suppression, although PA-1 is responsive to retinoic acid in morphological change. Transfection and expression of Disabled-2 in PA-1 cells mimic the effects of retinoic acid on growth suppression; the Disabled-2-expressing cells reach a much lower saturation density, and serum-stimulated c-Fos expression is greatly suppressed and disassociated from MAPK activation. Thus, Dab2 is one of the principal genes induced by retinoic acid involved in cell growth suppression, and expression of Dab2 alone is sufficient for uncoupling of MAPK activation and c-Fos expression. Resistance to retinoic acid regulation in PA-1 cells likely results from defects in retinoic acid up-regulation of Dab2 expression.
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MESH Headings
- Adaptor Proteins, Signal Transducing
- Adaptor Proteins, Vesicular Transport
- Adenoviridae/genetics
- Animals
- Apoptosis Regulatory Proteins
- Blotting, Northern
- Blotting, Western
- Carcinoma, Embryonal/metabolism
- Cell Differentiation
- DNA, Complementary/metabolism
- Dose-Response Relationship, Drug
- Enzyme Activation
- Flow Cytometry
- Genes, Tumor Suppressor
- Humans
- MAP Kinase Signaling System
- Mice
- Models, Biological
- Proteins/metabolism
- Proto-Oncogene Proteins c-fos/metabolism
- Signal Transduction
- Time Factors
- Transfection
- Tretinoin/chemistry
- Tretinoin/metabolism
- Tretinoin/pharmacology
- Tumor Cells, Cultured
- Tumor Suppressor Proteins
- Up-Regulation
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Affiliation(s)
- E R Smith
- Ovarian Cancer Program, Fox Chase Cancer Center, 7701 Burholme Ave., Philadelphia, PA 19111, USA
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32
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Smith ER, Smedberg JL, Rula ME, Hamilton TC, Xu XX. Disassociation of MAPK activation and c-Fos expression in F9 embryonic carcinoma cells following retinoic acid-induced endoderm differentiation. J Biol Chem 2001; 276:32094-100. [PMID: 11402055 DOI: 10.1074/jbc.m105009200] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Retinoic acid induces cell differentiation and suppresses cell growth in a wide spectrum of cell lines, and down-regulation of activator protein-1 activity by retinoic acid contributes to these effects. In embryonic stem cell-like F9 teratocarcinoma cells, which are widely used to study retinoic acid actions on gene regulation and early embryonic differentiation, retinoic acid treatment for 4 days resulted in suppression of cell growth and differentiation into primitive and then visceral endoderm-like cells, accompanied by a suppression of serum-induced c-Fos expression. The MAPK (ERK) pathway was involved in mitogenic signaling in F9 cells stimulated with serum. Surprisingly, although c-Fos expression was reduced, the MAPK activity was not decreased by retinoic acid treatment. We found that retinoic acid treatment inhibited the phosphorylation of Elk-1, a target of activated MAPK required for c-Fos transcription. In F9 cells, the MAPK/MEK inhibitor PD98059 suppressed Elk-1 phosphorylation and c-Fos expression, indicating that MAPK activity is required for Elk-1 phosphorylation/activation. Phosphoprotein phosphatase 2B (calcineurin), the major phosphatase for activated Elk-1, is not the target in the disassociation of MAPK activation and c-Fos expression since its inhibition by cyclosporin A or activation by ionomycin had no significant effects on serum-stimulated c-Fos expression and Elk-1 phosphorylation. Thus, we conclude that retinoic acid treatment to induce F9 cell differentiation uncouples Ras/MAPK activation from c-Fos expression by reduction of Elk-1 phosphorylation through a mechanism not involving the activation of phosphoprotein phosphatase 2B.
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Affiliation(s)
- E R Smith
- Ovarian Cancer Program, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
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33
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Abstract
Disabled-2 (Dab2) is one of the two mammalian orthologs of the Drosophila Disabled. The three spliced forms, p96, p93, and p67 of murine Dab2 cDNAs were first isolated as phosphoproteins functioning in the macrophage CSF-1 signal transduction pathway. Subsequently, the involvement of Dab2 in ovarian cancer development has been investigated: Dab2 expression is lost or greatly diminished in breast and ovarian cancers, and gene deletions have been found. Regulation of Disabled-2 expression is also found to be important in development and physiological functions. Structural information of the murine Dab2 gene is essential for studies of transcription regulation and gene function in mouse models. In this study, the mouse Dab2 gene coding sequence was identified and sequenced from three lambda phage clones containing the gene. Two BAC clones of mouse genomic DNA were also used to identify the sequences of the non-coding first exon and promoter. The first exon is separated from the second exon by a large (15 kb) intron. The mouse gene is about 40 kb in size and consists of 15 exons, producing a 3.6 kb message. The translation initiation site resides in the middle of the second exon. The mouse Dab2 gene structure is very similar to that of its human ortholog in exon/intron sizes and promoter sequences. The chromosomal localization of mouse Dab2 was mapped by FISH to chromosome 15A2, a site of syntax with the human 5p12 where human Dab2 gene resides. The information on the mouse Dab2 gene structure and promoter will be invaluable in studies of the involvement of Dab2 gene in cancer, expression, physiological function, and development in mouse models.
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Affiliation(s)
- Z Sheng
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322, USA
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Abstract
Disabled-2 (Dab2) is a putative tumor suppressor in breast and ovarian cancers. Its expression is lost in a majority of tumors, and homozygous deletions have been identified in a small percentage of tumors. Dab2 expression is absent or very low in the majority of breast and ovarian cancer cell lines, including MCF-7 and SK-Br-3 breast cancer cells. Transfection and expression of Dab2 in MCF-7 and SK-Br-3 cells suppress tumorigenicity. The cells reach a much lower saturation density and have reduced ability to form colonies on agar plates. In examining the signal transduction pathway of Dab2-transfected cells, we found that serum-stimulated c-Fos expression was greatly suppressed; however, the effects of Dab2 on MAPK family kinases were not as consistent. In MCF-7 and SK-Br-3 cells, although c-Fos expression was suppressed, the Erk1/2, JNK, and p38(MAPK) activities were unchanged or even increased. Serum-stimulated c-Fos expression is dependent on MAPK/Erk activity because the MEK inhibitor PD98059 suppresses Erk activity and c-Fos expression. Therefore, Dab2 appears to uncouple MAPK activation and c-fos transcription. Thus, we conclude that Dab2 re-expression suppresses tumorigenicity by reducing c-Fos expression at a site downstream of the activation of MAPK family kinases. Because Dab2 is frequently lost in cancer, the uncoupling of MAPK activation and c-Fos expression may be a favored target for inactivation in tumorigenicity.
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Affiliation(s)
- J He
- Ovarian Cancer Program, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111, USA
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35
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Xu XX, Liu QY, Peng DY. [Survey of researches on anti-pilatelet effects of saponins contained in Chinese herbal medicine]. Zhongguo Zhong Xi Yi Jie He Za Zhi 2001; 21:150-2. [PMID: 12577401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
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36
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Shan YX, Liu Y, Xu XX. [The primary study on rabbit bone marrow mesenchymal stem cells in constructing tissue-engineered cartilage]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2001; 15:49-52. [PMID: 12563932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
OBJECTIVE To study the feasibility of constructing tissue engineered cartilage by differentiated rabbit bone marrow mesenchymal stem cells(MSC) cultured in vitro and in vivo. METHODS The MSC were isolated from the nucleated cells fraction of autologous bone marrow by density gradient centrifuge, and then induced into chondrogenic differentiation by adding dexamethasone, transforming growth factor-beta 1 (TGF-beta 1) and ascorbic acid in vitro. After 3 weeks, some cells turned to round shape and secreted metachromatic matrix. The cartilaginoid grafts composed of chondrogenic MSC. Bovine type I collagen and human fibrin were cultured within the chondrogenic medium for 2 weeks in vitro or transplanted subcutaneously adjacent to the knee joint for 3 weeks in vivo. RESULTS The most cells in the grafts were degenerated and disappeared after cultured in vitro. But the residual cells were survival and secreted metachromatic staining proteoglycan with toluidine blue, which was characteristic cartilage matrix. The grafts developed into matured cartilage tissue assessed by histological examination after 3 weeks of transplantation in vivo. CONCLUSION MSC can be used as functional cells to constructing tissue engineered cartilage.
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Affiliation(s)
- Y X Shan
- Department of Orthopedics Surgery, First Hospital of Bethune University of Medical Sciences, Changchun Jilin, P. R. China 130021
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Abstract
Disabled-2 (DAB2 for human and Dab2 for other species) is one of two mammalian orthologues of Drosophila Disabled. DAB2 exhibits properties of a tumor suppressor gene: the expression of DAB2 is eliminated in 85-95% of breast and ovarian tumors; homozygous deletions of the gene have been found in some of these tumors; and reintroduction of DAB2 expression suppresses tumorigenicity of carcinoma cells. To study the mechanisms of loss of expression and to detect possible mutations in tumors, we have investigated the genomic structure of the DAB2 gene. The complete DAB2 gene was identified and sequenced from four overlapping BAC clones found to contain the gene. Complement factor 9 (C9) gene was localized next to the DAB2 gene at the 3'-end of the BAC DNA fragments. The human DAB2 gene is about 35 kb in size and consists of 15 exons and 14 introns, producing an approximately 4-kb message. A spliced variant corresponding to mouse Dab2 p93 and a 3'-end spliced variant were also identified. The translation initiation site resides in the second exon, and the noncoding first exon is separated from the second exon by a 14-kb intron. The 420-bp sequence 5' of exon 1 contains a CpG island (39 CpG sites). This 420-bp putative promoter was found to contain the site for transcription initiation, identified by RNase protection assay, and is sufficient for active transcription in epithelial cells. The information about the gene structure of DAB2 will enable us to analyze possible mutations and the mechanisms of loss of DAB2 expression in tumors.
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Affiliation(s)
- Z Sheng
- Department of Biochemistry and Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia 30322, USA
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Abstract
The physical interaction of epithelial cells with the basement membrane ensures correct positioning and acts as a survival factor for epithelial cells. Cells that detach from the basement membrane often undergo apoptosis; however, in carcinomas, this positional control is absent, permitting disorganized cell proliferation. In the majority of breast and ovarian carcinomas (85-90%), the expression of a candidate tumor suppressor, Disabled-2 (Dab2), is frequently lost. The Dab2-negative tumor cells are no longer in contact with an intact basement membrane, as indicated by the absence of collagen IV (in about 90% of cases). However, in the subset (10-15%) of ovarian tumors in which Dab2 expression is positive, the presence of a basement membrane-like structure around tumor cells was observed. Recombinant adenovirus-mediated expression of Dab2 was used in Dab2-negative ovarian and breast cancer cells, and re-expression of Dab2 was found to lead to cell death or growth arrest. Dab2 expression suppressed MAPK activation and c-fos expression. Plating the infected cells on a basement membrane matrigel rescued the cells from death and growth arrest. Thus, Dab2 exhibits a negative activity for cell growth and survival, which can be countered by attachment of the cells to basement membrane matrix. We conclude that Dab2 functions in cell positioning control and mediates the exigency for basement membrane attachment of epithelial cells. Loss of Dab2 may contribute to the basement membrane-independent, disorganized proliferation of tumor cells in ovarian and breast carcinomas.
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Affiliation(s)
- Z Sheng
- Department of Biochemistry and Winship Cancer Institute, Emory University School of Medicine, Atlanta, Georgia 30322, USA
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39
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Huang LF, Liu JG, Xu XX. [Guided bone regeneration by using biodegradable co-polymer membranes in rabbits]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 1999; 13:321-5. [PMID: 12080827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
OBJECTIVE To repair long bone segmental defects using biodegradable poly epsilon-caprolactone (PCL) and polylactic acid(PLA) co-polymer membranes, and explore its role and mechanism in guided bone regeneration (GBR). METHODS Rabbit radial segmental defects (1.2 cm in length, retain the periosteum) were created in this study, 24 animals were divided into 2 groups. The membranes were used to enclose the defects in experimental group, and no treatment in control group. After 3, 6, and 12 weeks of operation, X-ray, gross and histological examinations were observed. RESULTS The bone regeneration of experimental group was better than that of control group. Three weeks after operation, obvious external callus along the membrane were found in experimental group, and bony linking composed of external callus bridge were found in 6 weeks after operation. After 12 weeks of operation, callus bridge outside the membrane and bony reunion inside the membrane were achieved in experimental group. While in control group, typical nonunion was observed after 6 weeks of operation. CONCLUSION Guided bone regeneration can be achieved by using biodegradable membrane. The defects are repaired by the means of outside membrane callus and relatively late inside membrane callus. The membrane can prevent the ingrowth of fibrous tissue into defect area, thus nonunion are avoid, and keep a high concentration of nutritive elements, also serve as a frame for osteocyte growth to enhance bone healing.
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Affiliation(s)
- L F Huang
- Department of Orthopedic Surgery, First Clinical Hospital, Norman Bethun University of Medical Science, Changchun, Jilin, P. R. China 130021
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40
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Abstract
Disabled-2 (Dab2) functions in mitogenic signal transduction pathway, and is frequently activated by homozygous gene deletion in tumors, suggesting that Dab2 is a candidate tumor suppressor. Here, we surveyed the expression of Dab2, and report that Dab2 is expressed in a variety of tissues, and the level of expression is particularly high in ovary and breast. Dab2 expression was also detected in immortalized breast and ovarian epithelial cells. However, in more than a dozen established tumor cell lines derived from breast and ovarian epithelial tumors examined by Western blotting, Dab2 expression was undetectable in 90% of these cell lines. Histological staining of human ovarian tissues with specific anti-Dab2 antibodies indicated that Dab2 is highly expressed in the surface epithelial layer. In an immunohistological study of 26 ovarian carcinomas, 22 (85%) of the tumors were found to lose the expression of Dab2 in the tumor cells, which are epithelial origin. Loss of Dab2 expression is not correlated with tumor grade, suggesting that Dab2 is lost in an early stage of tumorigenicity. Indeed, loss of Dab2 correlates closely with morphological transformation of the surface epithelial cells. Additionally, loss of Dab2 protein occurs in hyperproliferative, but histological benign ovarian epithelium, suggesting that loss of Dab2 occurs in pre-malignant lesions. Thus, this study indicates that the loss of Dab2 expression is correlated with tumorigenicity of the cells disregarding the grade of the tumors, and loss of Dab2 expression is an early event in ovarian malignancies.
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Affiliation(s)
- Z Fazili
- Department of Biochemistry and Winship Cancer Center, Emory University School of Medicine, Atlanta, Georgia 30322, USA
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Abstract
Disabled-2 (Dab2), a mammalian structural homolog of Drosophila Disabled (Dab), is a mitogen-responsive phosphoprotein. It has been speculated to be a negative regulator of growth since its expression is lost in ovarian carcinomas. Dab2 contains a C-terminal proline-rich domain with sequences similar to those found in Sos, a guanine nucleotide exchange factor for Ras. The proline-rich sequences of Sos mediate the interaction of Sos with Grb2, an adaptor protein which coupled tyrosine kinase receptors to Sos. Herein, we have investigated the possibility that Dab2 interacts with Grb2. In experiments of co-immunoprecipitation from BAC1.2F5 macrophage cell lysates, significant quantities of Grb2 were associated with both Sos and Dab2, although Dab2 and Sos were not present in the same complex. Transfection of Dab2 into a Dab2-negative cell line (293 cells) decreased the amount of Grb2 associated with Sos, suggesting that Dab2 competes with Sos for binding to Grb2. Proline-rich peptides corresponding to Dab2 (#661-669) and to Sos (#1146-1161) inhibited the binding of Dab2 to Grb2, but were less effective in disrupting the Grb2-Sos complex. The expressed proline-rich domain of Dab2 (#600-730) bound Grb2, but other regions of Dab2 failed to bind Grb2. Both of the individual SH3 domains of Grb2 bound to Sos (N-terminal SH3 domain >> C-terminal SH3 domain), but binding to Dab2 required the intact Grb2, suggesting cooperative binding using both SH3 domains of Grb2. These data indicate that Dab2 binds to the SH3 domains of Grb2 via its C-terminal proline-rich sequences. Dab2 may modulate growth factor/Ras pathways by competing with Sos for binding to Grb2.
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Affiliation(s)
- X X Xu
- Department of Biochemistry, and Winship Cancer Center, Emory University School of Medicine, Atlanta, Georgia 30322, USA
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Abstract
The formation of cell membrane following CSF-1 stimulation of a macrophage cell line is coordinated with cell cycle progression. The majority of membrane phospholipid accumulates during the S phase and results from cell-cycle dependent oscillations in the rates of phosphatidylcholine biosynthesis and degradation. Both synthesis and degradation are enhanced during the G1 phase, resulting in a high rate of phosphatidylcholine turnover. Degradation of phosphatidylcholine after CSF-1 stimulation is mediated by a phospholipase C, and the release of diacylglycerol during G1 phase is biphasic. The degradation essentially stops during the S phase, thus allowing biosynthesis to supply the necessary membrane for cell division and doubling. The degradation of phosphatidylcholine during G1 signals the downstream activation of c-fos and junB transcription and can be mimicked by incubation of the macrophage cells with exogenous bacterial phospholipase C. In contrast, the expression of c-myc transcripts normally associated with CSF-1 stimulation is severely compromised in phospholipase C-treated cells, indicating that the diacylglycerol signals a pathway distinct from the pathway that governs c-myc activation. Constitutive expression of c-myc complements phospholipase C activity and permits the growth of cells in the presence of exogenous bacterial enzyme and the absence of CSF-1. Protein kinase C is not required to mediate the diacylglycerol signal that supports cell growth. GTP exchange on Ras is not enhanced, and MAP kinase activity is not stimulated in response to phosphatidylcholine degradation by exogenous phospholipase C. The 85 kDa cytoplasmic phospholipase A2 is activated, however, as well as a novel protein we have called p96. Rapid serine phosphorylation of p96 follows stimulation of cells with either CSF-1 or exogenous phospholipase C. Analysis of the murine cDNA encoding p96 reveals an amino-terminal domain with significant similarity to the amino-terminal domain of the Drosophila-disabled gene product and a carboxy-terminal domain containing proline-rich sequences characteristic of SH3 binding regions. The sequence of p96 suggests an interactive role for this unique protein in the CSF-1 signal transduction cascade.
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Affiliation(s)
- S Jackowski
- Department of Biochemistry, St. Jude Children's Research Hospital, Memphis, TN 38105-2729, USA
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Xu XX, Yang W, Jackowski S, Rock CO. Cloning of a novel phosphoprotein regulated by colony-stimulating factor 1 shares a domain with the Drosophila disabled gene product. J Biol Chem 1995; 270:14184-91. [PMID: 7775479 DOI: 10.1074/jbc.270.23.14184] [Citation(s) in RCA: 121] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
A unique protein with an apparent molecular mass of 96 kilodaltons (p96) was detected in the murine macrophage cell line, BAC1.2F5. The murine cDNA encoding p96 was cloned and sequenced, along with cDNAs representing two alternatively spliced forms of the protein. All three proteins possessed identical amino-terminal domains with significant similarity to the amino-terminal domain of the Drosophila disabled gene product and carboxyl-terminal domains containing proline-rich sequences characteristic of src homology region (domain 3) binding regions. BAC1.2F5 cells predominantly expressed the p96 protein, although mRNA and protein corresponding to the p67 splice variant were also detected. Electrophoretic gel retardation of p96 in response to stimulation of the cells with colony-stimulating factor 1 was noticeable within 5 min after growth factor addition and reached a maximum at 60 min. Metabolic labeling experiments showed that the gel retardation of p96 was associated with increased phosphorylation of the protein exclusively on serine residues. These data identify a novel protein that is phosphorylated in response to mitogenic growth factor stimulation.
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Affiliation(s)
- X X Xu
- Department of Biochemistry, St. Jude Children's Research Hospital, Memphis, Tennessee 38101, USA
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Xu XX, Rock CO, Qiu ZH, Leslie CC, Jackowski S. Regulation of cytosolic phospholipase A2 phosphorylation and eicosanoid production by colony-stimulating factor 1. J Biol Chem 1994; 269:31693-700. [PMID: 7989342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
A colony-stimulating factor 1 (CSF-1)-dependent murine macrophage cell line (BAC1.2F5) and peritoneal macrophages were used to investigate the relationship between growth factor-dependent phosphorylation/activation of the 85-kDa cytosolic phospholipase A2 (cPLA2) and arachidonic acid metabolism. The addition of CSF-1 to quiescent BAC1.2F5 cells was followed by the rapid phosphorylation, electrophoretic gel retardation, and stable increase in the specific activity of cPLA2 that correlated with the activation of ERK kinases. cPLA2 phosphorylation depended on the presence of growth factor and persisted throughout the cell cycle. CSF-1 inhibited prostaglandin E2 production and did not enhance arachidonic acid release or increase the levels of lysophosphatidylcholine or glycerophosphocholine. Treatment of BAC1.2F5 cells with the calcium ionophore A23187 plus CSF-1 did not stimulate eicosanoid release. Instead, CSF-1 enhanced the rate of exogenous arachidonic acid incorporation into phosphatidylcholine and its subsequent transfer to phosphatidylethanolamine suggesting that higher rates of arachidonic acid acylation may contribute to the suppression of prostaglandin production. In peritoneal macrophages, ERK kinase activity was stimulated and cPLA2 was phosphorylated and activated in response to CSF-1. However, CSF-1 did not trigger eicosanoid release but did augment arachidonic acid mobilization and prostaglandin E2 production elicited by zymosan and A23187. Thus, cPLA2 phosphorylation/activation and calcium mobilization are not the only determinants for eicosanoid release, and additional components in differentiated tissue macrophages are also required.
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Affiliation(s)
- X X Xu
- Department of Biochemistry, St. Jude Children's Research Hospital, Memphis, Tennessee 38101
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Hu CM, Zhang X, Xu XX. [A newly designed multifunctional intramedullary decompressor and its clinical application]. Zhonghua Wai Ke Za Zhi 1994; 32:526-7. [PMID: 7720421] [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: 01/26/2023]
Abstract
A newly designed multifunctional intramedullary decompressor has been introduced in this paper. It has the following functions: (1) intramedullary decompression of femoral head; (2) curettage of necrotic bone; (3) biopsying (4) taking out iliac bone and placing bone graft; (5) taking out broken snail. Thirty four cases of 46 avascular necrotic femoral heads have been treated by using this decompressor, all cases had satisfactory results 18 weeks after operation.
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Affiliation(s)
- C M Hu
- 1st Teaching Hospital, Norman Bethune University of Medical Sciences, Changchun
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Liu JG, Xu XX. [Stress shielding and fracture healing]. Zhonghua Yi Xue Za Zhi 1994; 74:483-5, 519. [PMID: 7994658] [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: 01/28/2023]
Abstract
The influence of stress shielding after fracture fixation with plate on fracture healing was studied. The results of animal and biomechanical experiments as well as the clinical observations demonstrated that rigidity of the plate was not the only factor causing stress redistribution and stress shielding effects of bone. Either the internal fixation with different implants or external fixation with fixators all might lead to physical and chemical characteristic changes of bone tissue. In the early stage, the disturbance of blood supply and the bone structure remodeling may be the main reasons. Reaction to the implant was another cause in the middle stage. If the affected limb can take weight-bearing normally at late stage, the influences of plate on fracture healing mechanical properties of bone and the osteoporosis cause by stress shielding effects will become much less. The tissue of the affected limb was the most important factor which may cause osteoporosis and refracture. Osteoporosis, bone atrophy and immobilization syndrome of bone and joint can be prevented and treated by taking normal weight-bearing and overcoming infection and implant reaction.
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Affiliation(s)
- J G Liu
- Department of Orthopaedics, First Teaching Hospital, Norman Bethune University of Medical Sciences, Changchun
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Okwu AK, Xu XX, Shiratori Y, Tabas I. Regulation of the threshold for lipoprotein-induced acyl-CoA:cholesterol O-acyltransferase stimulation in macrophages by cellular sphingomyelin content. J Lipid Res 1994; 35:644-55. [PMID: 8006519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Macrophage acyl-CoA:cholesterol O-acyltransferase (ACAT), a key enzyme in atheroma foam cell formation, is stimulated by lipoproteins only after a "threshold" amount of cholesterol has accumulated in the cell. The present study explores the hypothesis that cellular sphingomyelin, by increasing the capacity of the cell to accommodate excess cholesterol, can influence the threshold of ACAT stimulation by lipoproteins. When the sphingomyelin content of macrophages was increased by either incubation with exogenous sphingomyelin or ceramide (a stimulator of endogenous sphingomyelin synthesis), the ability of acetyl-LDL to stimulate whole-cell ACAT activity was substantially reduced despite similar lipoprotein uptake and total cholesterol accumulation as in control cells. When the sphingomyelin content of macrophages was decreased by sphingomyelinase treatment, the ability of acetyl-LDL to stimulate whole-cell ACAT activity was enhanced despite no change in lipoprotein uptake. Importantly, microsomes isolated from control, sphingomyelin-, or sphingomyelinase-treated macrophages showed no difference in ACAT activity when assayed in vitro in the presence of exogenous cholesterol, suggesting that these treatments affected cholesterol trafficking. Lastly, a corollary of the hypothesis, that cells might adapt to a large increase in free cholesterol by increasing their sphingomyelin content, was supported by showing that the sphingomyelin content of macrophages increased 2.6-fold when the cells were induced to accumulate free cholesterol by incubation with acetyl-LDL plus an ACAT inhibitor. Thus, the sphingomyelin content of macrophages can influence the threshold at which ACAT is stimulated by lipoprotein delivery of cholesterol, and the cholesterol content of macrophages can influence the sphingomyelin content of the cell. These findings are consistent with a model in which cellular sphingomyelin plays an important role in accommodating pools of cellular cholesterol that result from the uptake of atherogenic lipoproteins by macrophages.
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Affiliation(s)
- A K Okwu
- Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY 10032
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Sun NE, Shen BH, Zhou JM, Yuan J, Xu XX, Zhu DX, Han KK. An efficient method for large-scale isolation of plasmid DNAs by heat-alkali co-denaturation. DNA Cell Biol 1994; 13:83-6. [PMID: 8286043 DOI: 10.1089/dna.1994.13.83] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
A method is presented for efficient and large-scale isolation of plasmid DNAs from bacterial cells. Based on the cooperativity of heat and alkali actions, the method provides DNA preparations with high quality and yield (about 2 micrograms of DNA/ml culture), which are completely digestable by restriction enzymes and have a high transformation efficiency. Furthermore, the DNA preparations are extremely stable, and even through 4-year storage at -20 degrees C, the electrophorogram and transformation efficiency remain as high as before. The factors affecting the stability of various DNA samples are discussed.
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Affiliation(s)
- N E Sun
- Department of Biochemistry, Nanjing University, People's Republic of China
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Xu XX, Tessner TG, Rock CO, Jackowski S. Phosphatidylcholine hydrolysis and c-myc expression are in collaborating mitogenic pathways activated by colony-stimulating factor 1. Mol Cell Biol 1993; 13:1522-33. [PMID: 8441394 PMCID: PMC359464 DOI: 10.1128/mcb.13.3.1522-1533.1993] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Stimulation of diglyceride production via phospholipase C (PLC) hydrolysis of phosphatidylcholine was an early event in the mitogenic action of colony-stimulating factor 1 (CSF-1) in the murine macrophage cell line BAC1.2F5 and was followed by a second phase of diglyceride production that persisted throughout the G1 phase of the cell cycle. Addition of phosphatidylcholine-specific PLC (PC-PLC) from Bacillus cereus to the medium of quiescent cells raised the intracellular diglyceride concentration and stimulated [3H]thymidine incorporation, although PC-PLC did not support continuous proliferation. PC-PLC treatment did not induce tyrosine phosphorylation or turnover of the CSF-1 receptor. The major protein kinase C (PKC) isotype in BAC1.2F5 cells was PKC-delta. Diglyceride production from PC-PLC did not target PKC-delta, since unlike phorbol esters, PC-PLC treatment neither decreased the electrophoretic mobility of PKC-delta nor increased the amount of GTP bound to Ras, and PC-PLC was mitogenically active in BAC1.2F5 cells in which PKC-delta was downregulated by prolonged treatment with phorbol ester. PC-PLC mimicked CSF-1 action by elevating c-fos and junB mRNAs to 40% of the level induced by CSF-1; however, PC-PLC induced c-myc mRNA to only 5% of the level in CSF-1-stimulated cells. PC-PLC addition to CSF-1-dependent BAC1.2F5 clones that constitutively express c-myc increased [3H]thymidine incorporation to 86% of the level evoked by CSF-1 and supported slow growth in the absence of CSF-1. Therefore, PC-PLC is a component of a signal transduction pathway leading to transcription of c-fos and junB that collaborates with c-myc and is independent of PKC-delta and Ras activation.
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Affiliation(s)
- X X Xu
- Department of Biochemistry, St. Jude Children's Research Hospital, Memphis, Tennessee 38101
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Xu XX, Zhang X, Liu JG, Wang JB, Shi DG, Liu SX. Stress analyses after femoral shaft osteotomy fixed by various plates with different rigidities in simulation test. Chin Med J (Engl) 1993; 106:127-31. [PMID: 8504696] [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: 01/31/2023] Open
Abstract
Three pairs of human cadaver femora were used for strain measurement under a weight-bearing simulation test, which was performed on intact bone and osteotomized bone fixed by 3 types of plates with different rigidities respectively. The plates with uniform thickness did not adhere to the uniform stress distribution along the plate. The stress between both central screw holes was significantly great. However, the device of trapezoidal plate conformed to the uniform stress distribution along it, and the safety factors of 3 different types of the plates were proposed. The osteotomy site was mainly subjected to compression stress in standing phase with load on both femora, but subjected to bending stress mostly with load on the single femur. The total compression strain at the osteotomy site was greater than that on intact bone while the load was adding over twice body weight with load on both legs, and nearly normal with load on one leg. We believe that the bone structural changes caused by stress shielding and limb disuse etc can be overcome by using optimal plate and normal weight bearing.
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Affiliation(s)
- X X Xu
- Department of Orthopaedics, First Teaching Hospital of Norman Bethune University of Medical Sciences, Changchun
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