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Tang Y, Zhao R, Yi M, Ge Z, Wang D, Wang G, Deng X. Multifunctional Hydrogel Enhances Inflammatory Control, Antimicrobial Activity, and Oxygenation to Promote Healing in Infectious Wounds. Biomacromolecules 2024; 25:2423-2437. [PMID: 38457661 DOI: 10.1021/acs.biomac.3c01386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Abstract
Chronic infected wounds often fail to heal through normal repair mechanisms, and the persistent response of reactive oxygen species (ROS) and inflammation is a major contributing factor to the difficulty in their healing. In this context, we developed an ROS-responsive injectable hydrogel. This hydrogel is composed of ε-polylysine grafted (EPL) with caffeic acid (CA) and hyaluronic acid (HA) grafted with phenylboronic acid (PBA). Before the gelation process, a mixture CaO2@Cur-PDA (CCP) consisting of calcium peroxide (CaO2) coated with polydopamine (PDA) and curcumin (Cur) is embedded into the hydrogel. Under the conditions of chronic refractory wound environments, the hydrogel gradually dissociates. HA mimics the function of the extracellular matrix, while the released caffeic acid-grafted ε-polylysine (CE) effectively eliminates bacteria in the wound vicinity. Additionally, released CA also clears ROS and influences macrophage polarization. Subsequently, CCP further decomposes, releasing Cur, which promotes angiogenesis. This multifunctional hydrogel accelerates the repair of diabetic skin wounds infected with Staphylococcus aureus in vivo and holds promise as a candidate dressing for the healing of chronic refractory wounds.
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Affiliation(s)
- Yunfeng Tang
- Head & Neck Oncology Ward, Cancer Center, West China Hospital, Cancer Center, Sichuan University, Chengdu 610041, China
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Renliang Zhao
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Min Yi
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zilu Ge
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Dong Wang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Guanglin Wang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiangtian Deng
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
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Deng X, Wu Y, Tang Y, Ge Z, Wang D, Zheng C, Zhao R, Lin W, Wang G. Microenvironment-responsive smart hydrogels with antibacterial activity and immune regulation for accelerating chronic wound healing. J Control Release 2024; 368:518-532. [PMID: 38462042 DOI: 10.1016/j.jconrel.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/24/2024] [Accepted: 03/04/2024] [Indexed: 03/12/2024]
Abstract
Current therapeutic strategies for chronic refractory wounds remain challenge owing to their unfavorable wound microenvironment and poor skin regeneration ability. Thus far, a regimen for effective chronic refractory wounds management involves bacterial elimination, alleviation of oxidative stress, inhibition of inflammatory response, and promotion of angiogenesis. In this work, an injectable glycopeptide hydrogel based on phenylboronic acid-grafted ϵ-polylysine (EPBA) and poly (vinyl alcohol) (PVA) with pH/reactive oxygen species (ROS) dual-responsive properties was prepared, which exerted intrinsic antibacterial and antioxidant properties. ROS-responsive micelles (MIC) loaded with herb-derived Astragaloside IV (AST) are introduced into the hydrogel before gelation. Attributed to the acidic condition and oxidative stress microenvironment of wound bed, the hydrogel gradually disintegrates, and the released EPBA could help to eliminate bacterial. Meanwhile, the subsequential release of AST could help to achieve anti-oxidation, anti-inflammatory, proangiogenic effects, and regulation of macrophage polarization to accelerate chronic wound healing. In addition, the wound repair mechanism of composite hydrogel accelerating skin regeneration was assessed by RNA-sequencing, exploring a range of potential targets and pathway for further study. Collectively, this multifunctional hydrogel dressing, matching different healing stages of tissue remodeling, holds a great potential for the treatment of chronic refractory wounds.
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Affiliation(s)
- Xiangtian Deng
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, China; Trauma medical center, Department of Orthopedics surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Ye Wu
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, China
| | - YunFeng Tang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, China; Trauma medical center, Department of Orthopedics surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zilu Ge
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, China; Trauma medical center, Department of Orthopedics surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Dong Wang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, China; Trauma medical center, Department of Orthopedics surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Cheng Zheng
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan 610041, China
| | - Renliang Zhao
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, China; Trauma medical center, Department of Orthopedics surgery, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Wei Lin
- Department of Gynecology, West China Second Hospital, Sichuan University, Chengdu, China
| | - Guanglin Wang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, China; Trauma medical center, Department of Orthopedics surgery, West China Hospital, Sichuan University, Chengdu 610041, China
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Gao XF, Han L, Qian XS, Ge Z, Kong XQ, Lu S, Kan J, Zuo GF, Zhang JJ, Chen SL. [Long-term outcomes of intravascular ultrasound-guided drug-eluting stents implantation in patients with acute coronary syndrome: ULTIMATE ACS subgroup]. Zhonghua Xin Xue Guan Bing Za Zhi 2024; 52:137-143. [PMID: 38326064 DOI: 10.3760/cma.j.cn112148-20231008-00239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Objective: To explore the long-term effects of intravascular ultrasound (IVUS) guidance on patients with acute coronary syndrome (ACS) undergoing drug-eluting stents (DES) implantation. Methods: Data used in this study derived from ULTIMATE trial, which was a prospective, multicenter, randomized study. A total of 1 448 all-comer patients were enrolled between 2014 August and 2017 May. Primary endpoint of this study was target vessel failure (TVF) at 3 years, including cardiac death, target-vessel-related myocardial infarction, and clinically-driven target vessel revascularization. Results: ACS was present in 1 136 (78.5%) patients, and 3-year clinical follow-up was available in 1 423 patients (98.3%). TVF in the ACS group was 9.6% (109/1 136), which was significantly higher than 4.5% (14/312) in the non-ACS group (log-rank P=0.005). There were 109 TVFs in the ACS patients, with 7.6% (43/569) TVFs in the IVUS group and 11.6% (66/567) TVFs in the angiography group (log-rank P=0.019). Moreover, patients with optimal IVUS guidance were associated with a lower risk of 3-year TVF compared to those with suboptimal IVUS results (5.4% (16/296) vs. 9.9% (27/273),log-rank P=0.041). Conclusions: This ULTIMATE-ACS subgroup analysis showed that ACS patients undergoing DES implantation were associated with a higher risk of 3-year TVF. More importantly, the risk of TVF could be significantly decreased through IVUS guidance in patients with ACS, especially in those who had an IVUS-defined optimal procedure.
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Affiliation(s)
- X F Gao
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - L Han
- Department of Cardiology, Changshu No. 1 People's Hospital, Changshu 215500, China
| | - X S Qian
- Department of Cardiology, The First People's Hospital of Zhangjiagang, Zhangjiagang 215600, China
| | - Z Ge
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - X Q Kong
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - S Lu
- Department of Cardiology, The First People's Hospital of Taicang, Taicang 215400, China
| | - J Kan
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - G F Zuo
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - J J Zhang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
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Li J, Huang YQ, Zi J, Song CH, Ge Z. [Synergistic effect of azacitidine with homoharringtonine by activating the c-MYC/DDIT3/PUMA axis in acute myeloid leukemia]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:1001-1009. [PMID: 38503523 PMCID: PMC10834876 DOI: 10.3760/cma.j.issn.0253-2727.2023.12.006] [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] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Indexed: 03/21/2024]
Abstract
Objective: This study aimed to explore the synergistic effect and underlying mechanism of azacitidine (AZA) in combination with homoharringtonine (HHT) in acute myeloid leukemia (AML) . Methods: The synergistic effects of AZA and HHT were examined by cell proliferation, apoptosis, and colony formation assays. The synergistic effects were calculated using the combination index (CI) , and the underlying mechanisms were explored using RNA sequencing, pathway inhibitors, and gene knockdown approaches. Results: Compared with the single-drug controls, AZA and HHT combination significantly induced cell proliferation arrest and showed a synergistic effect with CI < 0.9 in AML cells. In the combination group versus the single-drug controls, colony formation was significantly decreased, whereas apoptosis was significantly increased in U937 (P<0.001) and MV4-11 (P<0.001) cells. AZA and HHT combination activated the integrated stress response (ISR) signaling pathway and induced DDIT3-PUMA-dependent apoptosis in cells. Furthermore, it remarkably downregulated the expression of c-MYC. The combination also activated c-MYC/DDIT3/PUMA-mediated ISR signaling to induce synergy on apoptosis. The synergy of AZA+HHT on apoptosis was induced by activating c-MYC/DDIT3/PUMA-mediated ISR signaling. Conclusion: The combination of AZA and HHT exerts synergistic anti-AML effects by inhibiting cellular proliferation and promoting apoptosis through activation of the ISR signaling pathway via the c-MYC/DDIT3/PUMA axis.
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Affiliation(s)
- J Li
- Department of Hematology, Zhongda Hospital, School of Medicine, Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
| | - Y Q Huang
- Department of Hematology, Zhongda Hospital, School of Medicine, Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
| | - J Zi
- Department of Hematology, Zhongda Hospital, School of Medicine, Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
| | - C H Song
- Pennysvinia State University, College of Medicine and Hershey Medical Center, Hershey, PA 17033, USA Division of Hematology, The Ohio State University Wexner Medical Center and The James Cancer Hospital, Columbus, OH 43210, USA
| | - Z Ge
- Department of Hematology, Zhongda Hospital, School of Medicine, Southeast University, Institute of Hematology Southeast University, Nanjing 210009, China
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Deng X, Zhao R, Tang Y, Yi M, Ge Z, Wang D, Fang Q, Xiong Z, Duan A, Liu W, Zhang Z, Xiang Y, Hu X, Lin W, Wang G. Highly Biocompatible Polyester-Based Piezoelectric Elastomer with Antitumor and Antibacterial Activity for Ultrasound-Enhanced Piezoelectric Therapy. ACS Appl Mater Interfaces 2023; 15:55308-55322. [PMID: 37991726 DOI: 10.1021/acsami.3c11749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Currently, the use of piezoelectric materials to provide sustainable and noninvasive bioelectric stimulation to eradicate tumor cells and accelerate wound healing has raised wide attention. The development of a multifunctional piezoelectric elastomer with the ability to perform in situ tumor therapy as well as wound repair is of paramount importance. However, current piezoelectric materials have a large elastic modulus and limited stretchability, making it difficult to match with the dynamic curvature changes of the wound. Therefore, by copolymerizing lactic acid, butanediol, sebacic acid, and itaconic acid to develop a piezoelectric elastomer (PLBSIE), we construct a new ultrasound-activated PLBSIE-based tumor/wound unified therapeutic platform. Excitedly, it showed outstanding piezoelectric performance and high stretchability, and the separated carrier could react with water to generate highly cytotoxic reactive oxygen species (ROS), contributing to effectively killing tumor cells and eliminating bacteria through piezoelectric therapy. In addition, ultrasound-triggered piezoelectric effects could promote the migration and differentiation of wound-healing-related cells, thus accelerating wound healing. Herein, such a piezoelectric elastomer exerted a critical role in postoperative tumor-induced wound therapy and healing with the merits of possessing multifunctional abilities. Taken together, the developed ultrasound-activated PLBSIE will offer a comprehensive treatment for postoperative osteosarcoma therapy.
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Affiliation(s)
- Xiangtian Deng
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Renliang Zhao
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yunfeng Tang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Min Yi
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zilu Ge
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Dong Wang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qian Fang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhencheng Xiong
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Ao Duan
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Wenzheng Liu
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhen Zhang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yong Xiang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610041, China
| | - Xiaoran Hu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 610041, China
| | - Wei Lin
- Department of Gynecology, West China Second Hospital, Sichuan University, Chengdu 610041, China
| | - Guanglin Wang
- Department of Orthopedics, Orthopedics Research Institute, West China Hospital, Sichuan University, Chengdu 610041, China
- Trauma Medical Center, Department of Orthopedics Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
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Plattner P, Wood E, Al Ayoubi L, Beliuskina O, Bissell ML, Blaum K, Campbell P, Cheal B, de Groote RP, Devlin CS, Eronen T, Filippin L, Garcia Ruiz RF, Ge Z, Geldhof S, Gins W, Godefroid M, Heylen H, Hukkanen M, Imgram P, Jaries A, Jokinen A, Kanellakopoulos A, Kankainen A, Kaufmann S, König K, Koszorús Á, Kujanpää S, Lechner S, Malbrunot-Ettenauer S, Müller P, Mathieson R, Moore I, Nörtershäuser W, Nesterenko D, Neugart R, Neyens G, Ortiz-Cortes A, Penttilä H, Pohjalainen I, Raggio A, Reponen M, Rinta-Antila S, Rodríguez LV, Romero J, Sánchez R, Sommer F, Stryjczyk M, Virtanen V, Xie L, Xu ZY, Yang XF, Yordanov DT. Nuclear Charge Radius of ^{26m}Al and Its Implication for V_{ud} in the Quark Mixing Matrix. Phys Rev Lett 2023; 131:222502. [PMID: 38101341 DOI: 10.1103/physrevlett.131.222502] [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: 07/25/2023] [Accepted: 10/09/2023] [Indexed: 12/17/2023]
Abstract
Collinear laser spectroscopy was performed on the isomer of the aluminium isotope ^{26m}Al. The measured isotope shift to ^{27}Al in the 3s^{2}3p ^{2}P_{3/2}^{○}→3s^{2}4s ^{2}S_{1/2} atomic transition enabled the first experimental determination of the nuclear charge radius of ^{26m}Al, resulting in R_{c}=3.130(15) fm. This differs by 4.5 standard deviations from the extrapolated value used to calculate the isospin-symmetry breaking corrections in the superallowed β decay of ^{26m}Al. Its corrected Ft value, important for the estimation of V_{ud} in the Cabibbo-Kobayashi-Maskawa matrix, is thus shifted by 1 standard deviation to 3071.4(1.0) s.
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Affiliation(s)
- P Plattner
- ISOLDE, CERN Experimental Physics Department, Geneva 23, 1211 Genevè, Switzerland
- Universität Innsbruck, Innrain 52, 6020 Innsbruck, Austria
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - E Wood
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - L Al Ayoubi
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - O Beliuskina
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - M L Bissell
- ISOLDE, CERN Experimental Physics Department, Geneva 23, 1211 Genevè, Switzerland
- Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - P Campbell
- Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - B Cheal
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - R P de Groote
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - C S Devlin
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - T Eronen
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - L Filippin
- Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Université libre de Bruxelles, 1050 Brussels, Belgium
| | - R F Garcia Ruiz
- ISOLDE, CERN Experimental Physics Department, Geneva 23, 1211 Genevè, Switzerland
- Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, Massachusetts 02139, USA
| | - Z Ge
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - S Geldhof
- Instituut voor Kern- en Stralingsfysica, KU Leuven, 3001 Leuven, Belgium
| | - W Gins
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - M Godefroid
- Spectroscopy, Quantum Chemistry and Atmospheric Remote Sensing (SQUARES), Université libre de Bruxelles, 1050 Brussels, Belgium
| | - H Heylen
- ISOLDE, CERN Experimental Physics Department, Geneva 23, 1211 Genevè, Switzerland
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - M Hukkanen
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - P Imgram
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - A Jaries
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - A Jokinen
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - A Kanellakopoulos
- Instituut voor Kern- en Stralingsfysica, KU Leuven, 3001 Leuven, Belgium
| | - A Kankainen
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - S Kaufmann
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - K König
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - Á Koszorús
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
- Instituut voor Kern- en Stralingsfysica, KU Leuven, 3001 Leuven, Belgium
| | - S Kujanpää
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - S Lechner
- ISOLDE, CERN Experimental Physics Department, Geneva 23, 1211 Genevè, Switzerland
| | - S Malbrunot-Ettenauer
- ISOLDE, CERN Experimental Physics Department, Geneva 23, 1211 Genevè, Switzerland
- TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - P Müller
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - R Mathieson
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - I Moore
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - W Nörtershäuser
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - D Nesterenko
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - R Neugart
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- Institut für Kernchemie, Universität Mainz, Fritz-Straßmann-Weg 2, 55128 Mainz, Germany
| | - G Neyens
- ISOLDE, CERN Experimental Physics Department, Geneva 23, 1211 Genevè, Switzerland
- Instituut voor Kern- en Stralingsfysica, KU Leuven, 3001 Leuven, Belgium
| | - A Ortiz-Cortes
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - H Penttilä
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - I Pohjalainen
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - A Raggio
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - M Reponen
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - S Rinta-Antila
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - L V Rodríguez
- ISOLDE, CERN Experimental Physics Department, Geneva 23, 1211 Genevè, Switzerland
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- IJCLab, CNRS/IN2P3, Université Paris-Saclay, 91400 Orsay, France
| | - J Romero
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - R Sánchez
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - F Sommer
- Institut für Kernphysik, Technische Universität Darmstadt, Schlossgartenstraße 9, 64289 Darmstadt, Germany
| | - M Stryjczyk
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - V Virtanen
- Department of Physics, University of Jyväskylä, P.O. Box 35 FI-40014, Jyväskylä, Finland
| | - L Xie
- Department of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Z Y Xu
- Instituut voor Kern- en Stralingsfysica, KU Leuven, 3001 Leuven, Belgium
| | - X F Yang
- Instituut voor Kern- en Stralingsfysica, KU Leuven, 3001 Leuven, Belgium
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, 209 Chengfu Road, 100871 Beijing, China
| | - D T Yordanov
- IJCLab, CNRS/IN2P3, Université Paris-Saclay, 91400 Orsay, France
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Ge Z, Yang M, Wei D, Wang D, Zhao R, Deng X, Tang Y, Fang Q, Xiong Z, Wang C, Wang G, Li W, Tang K. Inhibition of IKKβ via a DNA-Based In Situ Delivery System Improves Achilles Tendinopathy Healing in a Rat Model. Am J Sports Med 2023; 51:3533-3545. [PMID: 37804159 DOI: 10.1177/03635465231198501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/09/2023]
Abstract
BACKGROUND The inhibition of IKKβ by the inhibitor 2-amino-6-[2-(cyclopropylmethoxy)-6-hydroxyphenyl]-4-(4-piperidinyl)-3-pyridine carbonitrile (ACHP) is a promising strategy for the treatment of Achilles tendinopathy. However, the poor water solubility of ACHP severely hinders its in vivo application. Moreover, the effective local delivery of ACHP to the tendon and its therapeutic effects have not been reported. PURPOSE To investigate the therapeutic effects of IKKβ inhibition via injection of ACHP incorporated into a DNA supramolecular hydrogel in a collagenase-induced tendinopathy rat model. STUDY DESIGN Controlled laboratory study. METHODS Dendritic DNA, a Y-shaped monomer, and a crosslinking monomer were mixed with ACHP and self-assembled into an ACHP-DNA supramolecular hydrogel (ACHP-Gel). The effects of ACHP-Gel in tendon stem/progenitor cells were investigated via RNA sequencing and validated using quantitative reverse transcription polymerase chain reaction (qRT-PCR). A total of 120 collagenase-induced rats were randomly assigned to 5 groups: blank, phosphate-buffered saline (PBS), DNA-Gel, ACHP, and ACHP-Gel. Healing outcomes were evaluated using biomechanic and histologic evaluations at 4 and 8 weeks. RESULTS ACHP-Gel enhanced the solubility of ACHP and sustained its release for ≥21 days in vivo, which significantly increased the retention time of ACHP and markedly reduced the frequency of administration. RNA sequencing and qRT-PCR showed that ACHP effectively downregulated genes related to inflammation and extracellular matrix remodeling and upregulated genes related to tenogenic differentiation. The cross-sectional area (P = .024), load to failure (P = .002), stiffness (P = .039), and elastic modulus (P = .048) significantly differed between the ACHP-Gel and PBS groups at 8 weeks. The ACHP-Gel group had better histologic scores than the ACHP group at 4 (P = .042) and 8 weeks (P = .009). Type I collagen expression (COL-I; P = .034) and the COL-I/collagen type III ratio (P = .015) increased while interleukin 6 expression decreased (P < .001) in the ACHP-Gel group compared with the ACHP group at 8 weeks. CONCLUSION DNA supramolecular hydrogel significantly enhanced the aqueous solubility of ACHP and increased its release-retention time. Injection frequency was markedly reduced. ACHP-Gel suppressed inflammation in Achilles tendinopathy and promoted tendon healing in a rat model. CLINICAL RELEVANCE ACHP-Gel injection is a promising strategy for the treatment of Achilles tendinopathy in clinical practice.
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Affiliation(s)
- Zilu Ge
- Trauma Medical Center, Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Mingyu Yang
- Department of Orthopedics/Sports Medicine Center, First Affiliated Hospital of Third Military Medical University [Army Medical University], Chongqing, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Danfeng Wei
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Dong Wang
- Trauma Medical Center, Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Renliang Zhao
- Trauma Medical Center, Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Xiangtian Deng
- Trauma Medical Center, Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yunfeng Tang
- Trauma Medical Center, Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Qian Fang
- Trauma Medical Center, Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Zhencheng Xiong
- Trauma Medical Center, Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Chengshi Wang
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Guanglin Wang
- Trauma Medical Center, Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China; Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, Sichuan, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Wei Li
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Kanglai Tang
- Department of Orthopedics/Sports Medicine Center, First Affiliated Hospital of Third Military Medical University [Army Medical University], Chongqing, China
- Investigation performed at Department of Orthopaedic Surgery, West China Hospital, Sichuan University, Chengdu, Sichuan, China
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Ge Z, Li W, Zhao R, Xiong W, Wang D, Tang Y, Fang Q, Deng X, Zhang Z, Zhou Y, Chen X, Li Y, Lu Y, Wang C, Wang G. Programmable DNA Hydrogel Provides Suitable Microenvironment for Enhancing TSPCS Therapy in Healing of Tendinopathy. Small 2023; 19:e2207231. [PMID: 37066733 DOI: 10.1002/smll.202207231] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/17/2023] [Indexed: 06/19/2023]
Abstract
Tendon stem/progenitor cells (TSPCs) therapy is a promising strategy for enhancing cell matrix and collagen synthesis, and regulating the metabolism of the tendon microenvironment during tendon injury repair. Nevertheless, the barren microenvironment and gliding shear of tendon cause insufficient nutrition supply, damage, and aggregation of injected TSPCs around tendon tissues, which severely hinders their clinical application in tendinopathy. In this study, a TSPCs delivery system is developed by encapsulating TSPCs within a DNA hydrogel (TSPCs-Gel) as the DNA hydrogel offers an excellent artificial extracellular matrix (ECM) microenvironment by providing nutrition for proliferation and protection against shear forces. This delivery method restricts TSPCs to the tendons, significantly extending their retention time. It is also found that TSPCs-Gel injections can promote the healing of rat tendinopathy in vivo, where cross-sectional area and load to failure of injured tendons in rats are significantly improved compared to the free TSPCs treatment group at 8 weeks. Furthermore, the potential healing mechanism of TSPCs-Gel is investigated by RNA-sequencing to identify a series of potential gene and signaling pathway targets for further clinical treatment strategies. These findings suggest the potential pathways of using DNA hydrogels as artificial ECMs to promote cell proliferation and protect TSPCs in TSPC therapy.
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Affiliation(s)
- Zilu Ge
- Trauma Medical Center, Department of Orthopaedic surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Wei Li
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Renliang Zhao
- Trauma Medical Center, Department of Orthopaedic surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Wei Xiong
- Trauma Medical Center, Department of Orthopaedic surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Dong Wang
- Trauma Medical Center, Department of Orthopaedic surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yunfeng Tang
- Trauma Medical Center, Department of Orthopaedic surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Qian Fang
- Trauma Medical Center, Department of Orthopaedic surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiangtian Deng
- Trauma Medical Center, Department of Orthopaedic surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Zhen Zhang
- Trauma Medical Center, Department of Orthopaedic surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yaojia Zhou
- Animal Experimental Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Xiaoting Chen
- Animal Experimental Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yue Li
- Core Facility of West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Yanrong Lu
- Key Laboratory of Transplant Engineering and Immunology, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Chengshi Wang
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Guanglin Wang
- Trauma Medical Center, Department of Orthopaedic surgery, West China Hospital, Sichuan University, Chengdu, 610041, China
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
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9
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Ge Z, Xiong W, Wang D, Tang Y, Fang Q, Wang L, Zhang Z, Lin W, Wang G. Comparison of femoral neck system vs. dynamic hip system blade for the treatment of femoral neck fracture in young patients: A retrospective study. Front Surg 2023; 10:1092786. [PMID: 36816012 PMCID: PMC9935827 DOI: 10.3389/fsurg.2023.1092786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/16/2023] [Indexed: 02/05/2023] Open
Abstract
Background Femoral neck fracture is a common fracture in orthopedic practice. This study aimed to compare the clinical outcomes between the femoral neck system and dynamic hip system blade for the treatment of femoral neck fracture in young patients. Methods This retrospective study included 43 and 52 patients who underwent treatment for femoral neck fracture with the femoral neck system and dynamic hip system blade, respectively, between August 2019 and August 2020. Operative indexes, including operation duration, blood loss, incision length, postoperative complications (femoral neck shortening, non-union, screw pull-out, femoral head necrosis), and Harris scale scores were recorded and analyzed. Results Compared to that with the dynamic hip system blade, the femoral neck system showed significantly less operation duration (femoral neck system vs. dynamic hip system blade: 47.09 ± 9.19 vs. 52.90 ± 9.64, P = 0.004), less blood loss (48.53 ± 10.69 vs. 65.31 ± 17.91, P < 0.001), and shorter incision length (4.04 ± 0.43 vs. 4.93 ± 0.53, P < 0.001). Femoral neck shortening was significantly lower with the femoral neck system than with the dynamic hip system blade (3.93 ± 2.40, n = 39 vs. 5.22 ± 2.89, n = 44, P = 0.031). No statistical differences were observed between the two groups in nonunion, screw pull-out, and femoral head necrosis. In addition, the latest follow-up Harris scale score was significantly higher with the femoral neck system than with the dynamic hip system blade (92.3 ± 4.5 vs. 89. 9 ± 4.9, P = 0.015). Conclusion The femoral neck system results in less trauma, less femoral neck shortening, and better hip joint function than the dynamic hip system blade for the treatment of femoral neck fracture in young patients.
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Affiliation(s)
- Zilu Ge
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Wei Xiong
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Dong Wang
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Yunfeng Tang
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Qian Fang
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Limin Wang
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Zhen Zhang
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Wei Lin
- WestChina Women's and Children's Hospital, Sichuan University, Chengdu, China,Correspondence: Wei Lin Guanglin Wang
| | - Guanglin Wang
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China,Correspondence: Wei Lin Guanglin Wang
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10
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Yamaguchi H, Hayakawa S, Ma N, Shimizu H, Okawa K, Zhang Q, Yang L, Kahl D, La Cognata M, Lamia L, Abe K, Beliuskina O, Cha S, Chae K, Cherubini S, Figuera P, Ge Z, Gulino M, Hu J, Inoue A, Iwasa N, Kim A, Kim D, Kiss G, Kubono S, La Commara M, Lattuada M, Lee E, Moon J, Palmerini S, Parascandolo C, Park S, Phong V, Pierroutsakou D, Pizzone R, Rapisarda G, Romano S, Spitaleri C, Tang X, Trippella O, Tumino A, Zhang N, Lam Y, Heger A, Jacobs A, Xu S, Ma S, Ru L, Liu E, Liu T, Hamill C, Murphy ASJ, Su J, Fang X, Kwag M, Duy N, Uyen N, Kim D, Liang J, Psaltis A, Sferrazza M, Johnston Z, Li Y. RIB induced reactions: Studying astrophysical reactions with low-energy RI beam at CRIB. EPJ Web Conf 2023. [DOI: 10.1051/epjconf/202327501015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Astrophysical reactions involving radioactive isotopes (RI) often play an important role in high-temperature stellar environments. The experimental studies on the reaction rates for those are still limited mainly due to the technical difficulties in producing high-quality RI beams. A direct measurement of those reactions would be still challenging in many cases, however, we can make a reliable evaluation of the reaction rates by an indirect method or by studying the resonance prorerties. Here we ntroduce recent examples of experimental studies on such RI-involving astrophysical reactions, performed at Center for Nuclear Study, the University of Tokyo, using the low-energy RI beam separator CRIB. One is for the neutron-induced destruction reactions of 7Be in the Big-Bang nucleosynthesis, and the other is the study on the 22Mg(α, p) reaction relevant in X-ray bursts, which was performed with the resonant scattering method from the inverse reaction channel.
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11
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Geldhof S, Kortelainen M, Beliuskina O, Campbell P, Caceres L, Cañete L, Cheal B, Chrysalidis K, Devlin CS, de Groote RP, de Roubin A, Eronen T, Ge Z, Gins W, Koszorus A, Kujanpää S, Nesterenko D, Ortiz-Cortes A, Pohjalainen I, Moore ID, Raggio A, Reponen M, Romero J, Sommer F. Impact of Nuclear Deformation and Pairing on the Charge Radii of Palladium Isotopes. Phys Rev Lett 2022; 128:152501. [PMID: 35499902 DOI: 10.1103/physrevlett.128.152501] [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: 10/29/2021] [Revised: 02/01/2022] [Accepted: 03/10/2022] [Indexed: 06/14/2023]
Abstract
The impact of nuclear deformation can been seen in the systematics of nuclear charge radii, with radii generally expanding with increasing deformation. In this Letter, we present a detailed analysis of the precise relationship between nuclear quadrupole deformation and the nuclear size. Our approach combines the first measurements of the changes in the mean-square charge radii of well-deformed palladium isotopes between A=98 and A=118 with nuclear density functional calculations using Fayans functionals, specifically Fy(std) and Fy(Δr,HFB), and the UNEDF2 functional. The changes in mean-square charge radii are extracted from collinear laser spectroscopy measurements on the 4d^{9}5s ^{3}D_{3}→4d^{9}5p ^{3}P_{2} atomic transition. The analysis of the Fayans functional calculations reveals a clear link between a good reproduction of the charge radii for the neutron-rich Pd isotopes and the overestimated odd-even staggering: Both aspects can be attributed to the strength of the pairing correlations in the particular functional which we employ.
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Affiliation(s)
- S Geldhof
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
- KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium
| | - M Kortelainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - O Beliuskina
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - P Campbell
- Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, United Kingdom
| | - L Caceres
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, 14000 Caen, France
| | - L Cañete
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - B Cheal
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | | | - C S Devlin
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - R P de Groote
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - A de Roubin
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - T Eronen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - Z Ge
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - W Gins
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - A Koszorus
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - S Kujanpää
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - D Nesterenko
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - A Ortiz-Cortes
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DSM-CNRS/IN2P3, 14000 Caen, France
| | - I Pohjalainen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - I D Moore
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - A Raggio
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - M Reponen
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - J Romero
- Accelerator Laboratory, Department of Physics, University of Jyväskylä, 40014 Jyväskylä, Finland
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - F Sommer
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
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12
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Li HF, Naimi S, Sprouse TM, Mumpower MR, Abe Y, Yamaguchi Y, Nagae D, Suzaki F, Wakasugi M, Arakawa H, Dou WB, Hamakawa D, Hosoi S, Inada Y, Kajiki D, Kobayashi T, Sakaue M, Yokoda Y, Yamaguchi T, Kagesawa R, Kamioka D, Moriguchi T, Mukai M, Ozawa A, Ota S, Kitamura N, Masuoka S, Michimasa S, Baba H, Fukuda N, Shimizu Y, Suzuki H, Takeda H, Ahn DS, Wang M, Fu CY, Wang Q, Suzuki S, Ge Z, Litvinov YA, Lorusso G, Walker PM, Podolyak Z, Uesaka T. First Application of Mass Measurements with the Rare-RI Ring Reveals the Solar r-Process Abundance Trend at A=122 and A=123. Phys Rev Lett 2022; 128:152701. [PMID: 35499908 DOI: 10.1103/physrevlett.128.152701] [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: 12/09/2021] [Revised: 01/31/2022] [Accepted: 02/15/2022] [Indexed: 06/14/2023]
Abstract
The Rare-RI Ring (R3) is a recently commissioned cyclotronlike storage ring mass spectrometer dedicated to mass measurements of exotic nuclei far from stability at Radioactive Isotope Beam Factory (RIBF) in RIKEN. The first application of mass measurement using the R3 mass spectrometer at RIBF is reported. Rare isotopes produced at RIBF-^{127}Sn, ^{126}In, ^{125}Cd, ^{124}Ag, ^{123}Pd-were injected in R3. Masses of ^{126}In, ^{125}Cd, and ^{123}Pd were measured whereby the mass uncertainty of ^{123}Pd was improved. This is the first reported measurement with a new storage ring mass spectrometry technique realized at a heavy-ion cyclotron and employing individual injection of the preidentified rare nuclei. The latter is essential for the future mass measurements of the rarest isotopes produced at RIBF. The impact of the new ^{123}Pd result on the solar r-process abundances in a neutron star merger event is investigated by performing reaction network calculations of 20 trajectories with varying electron fraction Y_{e}. It is found that the neutron capture cross section on ^{123}Pd increases by a factor of 2.2 and β-delayed neutron emission probability, P_{1 n}, of ^{123}Rh increases by 14%. The neutron capture cross section on ^{122}Pd decreases by a factor of 2.6 leading to pileup of material at A=122, thus reproducing the trend of the solar r-process abundances. The trend of the two-neutron separation energies (S_{2n}) was investigated for the Pd isotopic chain. The new mass measurement with improved uncertainty excludes large changes of the S_{2n} value at N=77. Such large increase of the S_{2n} values before N=82 was proposed as an alternative to the quenching of the N=82 shell gap to reproduce r-process abundances in the mass region of A=112-124.
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Affiliation(s)
- H F Li
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Lanzhou University, Lanzhou 730000, People's Republic of China
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S Naimi
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - T M Sprouse
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M R Mumpower
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Y Abe
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - Y Yamaguchi
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - D Nagae
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - F Suzaki
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - M Wakasugi
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - H Arakawa
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - W B Dou
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - D Hamakawa
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - S Hosoi
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - Y Inada
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - D Kajiki
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - T Kobayashi
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - M Sakaue
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - Y Yokoda
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - T Yamaguchi
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - R Kagesawa
- Institute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan
| | - D Kamioka
- Institute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan
| | - T Moriguchi
- Institute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan
| | - M Mukai
- Institute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan
| | - A Ozawa
- Institute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan
| | - S Ota
- Center for Nuclear Study, University of Tokyo, Wako, Saitama 351-0198, Japan
| | - N Kitamura
- Center for Nuclear Study, University of Tokyo, Wako, Saitama 351-0198, Japan
| | - S Masuoka
- Center for Nuclear Study, University of Tokyo, Wako, Saitama 351-0198, Japan
| | - S Michimasa
- Center for Nuclear Study, University of Tokyo, Wako, Saitama 351-0198, Japan
| | - H Baba
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - N Fukuda
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - Y Shimizu
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - H Takeda
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
| | - D S Ahn
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Republic of Korea
| | - M Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - C Y Fu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Q Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - S Suzuki
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Z Ge
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Yu A Litvinov
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - G Lorusso
- National Physical Laboratory, Teddington, TW11 0LW, United Kingdom
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - P M Walker
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - Zs Podolyak
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - T Uesaka
- Riken Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198, Japan
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Angloher G, Dafinei I, Marco ND, Ferroni F, Fichtinger S, Filipponi A, Friedl M, Fuss A, Ge Z, Heikinheimo M, Huitu K, Maji R, Mancuso M, Pagnanini L, Petricca F, Pirro S, Pröbst F, Profeta G, Puiu A, Reindl F, Schäffner K, Schieck J, Schmiedmayer D, Schwertner C, Stahlberg M, Stendahl A, Wagner F, Yue S, Zema V, Zhu Y, Pandola L. Simulation-based design study for the passive shielding of the COSINUS dark matter experiment. Eur Phys J C Part Fields 2022; 82:248. [PMID: 35399983 PMCID: PMC8940824 DOI: 10.1140/epjc/s10052-022-10184-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 03/04/2022] [Indexed: 06/14/2023]
Abstract
The COSINUS (Cryogenic Observatory for SIgnatures seen in Next-generation Underground Searches) experiment aims at the detection of dark matter-induced recoils in sodium iodide (NaI) crystals operated as scintillating cryogenic calorimeters. The detection of both scintillation light and phonons allows performing an event-by-event signal to background discrimination, thus enhancing the sensitivity of the experiment. The choice of using NaI crystals is motivated by the goal of probing the long-standing DAMA/LIBRA results using the same target material. The construction of the experimental facility is foreseen to start by 2021 at the INFN Gran Sasso National Laboratory (LNGS) in Italy. It consists of a cryostat housing the target crystals shielded from the external radioactivity by a water tank acting, at the same time, as an active veto against cosmic ray-induced events. Taking into account both environmental radioactivity and intrinsic contamination of materials used for cryostat, shielding and infrastructure, we performed a careful background budget estimation. The goal is to evaluate the number of events that could mimic or interfere with signal detection while optimising the geometry of the experimental setup. In this paper we present the results of the detailed Monte Carlo simulations we performed, together with the final design of the setup that minimises the residual amount of background particles reaching the detector volume.
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Affiliation(s)
- G. Angloher
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | | | - N. Di Marco
- Gran Sasso Science Institute, 67100 L’Aquila, Italy
- INFN-Laboratori Nazionali del Gran Sasso, 67010 Assergi, Italy
| | - F. Ferroni
- INFN-Sezione di Roma, 00185 Rome, Italy
- Gran Sasso Science Institute, 67100 L’Aquila, Italy
| | - S. Fichtinger
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Vienna, Austria
| | - A. Filipponi
- INFN-Laboratori Nazionali del Gran Sasso, 67010 Assergi, Italy
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, 67100 L’Aquila, Italy
| | - M. Friedl
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Vienna, Austria
| | - A. Fuss
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Vienna, Austria
- Atominstitut, Technische Universität Wien, 1020 Vienna, Austria
| | - Z. Ge
- SICCAS-Shanghai Institute of Ceramics, Shanghai, 200050 People’s Republic of China
| | | | - K. Huitu
- Helsinki Institute of Physics, 00560 Helsinki, Finland
| | - R. Maji
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Vienna, Austria
- Atominstitut, Technische Universität Wien, 1020 Vienna, Austria
| | - M. Mancuso
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - L. Pagnanini
- Gran Sasso Science Institute, 67100 L’Aquila, Italy
- INFN-Laboratori Nazionali del Gran Sasso, 67010 Assergi, Italy
| | - F. Petricca
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - S. Pirro
- INFN-Laboratori Nazionali del Gran Sasso, 67010 Assergi, Italy
| | - F. Pröbst
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - G. Profeta
- INFN-Laboratori Nazionali del Gran Sasso, 67010 Assergi, Italy
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, 67100 L’Aquila, Italy
| | - A. Puiu
- Gran Sasso Science Institute, 67100 L’Aquila, Italy
- INFN-Laboratori Nazionali del Gran Sasso, 67010 Assergi, Italy
| | - F. Reindl
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Vienna, Austria
- Atominstitut, Technische Universität Wien, 1020 Vienna, Austria
| | - K. Schäffner
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - J. Schieck
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Vienna, Austria
- Atominstitut, Technische Universität Wien, 1020 Vienna, Austria
| | - D. Schmiedmayer
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Vienna, Austria
- Atominstitut, Technische Universität Wien, 1020 Vienna, Austria
| | - C. Schwertner
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Vienna, Austria
- Atominstitut, Technische Universität Wien, 1020 Vienna, Austria
| | - M. Stahlberg
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - A. Stendahl
- Helsinki Institute of Physics, 00560 Helsinki, Finland
| | - F. Wagner
- Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, 1050 Vienna, Austria
| | - S. Yue
- SICCAS-Shanghai Institute of Ceramics, Shanghai, 200050 People’s Republic of China
| | - V. Zema
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - Y. Zhu
- SICCAS-Shanghai Institute of Ceramics, Shanghai, 200050 People’s Republic of China
| | | | - L. Pandola
- INFN-Laboratori Nazionali del Sud, 95125 Catania, Italy
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Yamaguchi H, Hayakawa S, Ma N, Shimizu H, Okawa K, Yang L, Kahl D, La Cognata M, Lamia L, Abe K, Beliuskina O, Cha S, Chae K, Cherubini S, Figuera P, Ge Z, Gulino M, Hu J, Inoue A, Iwasa N, Kim A, Kim D, Kiss G, Kubono S, La Commara M, Lattuada M, Lee E, Moon J, Palmerini S, Parascandolo C, Park S, Phong VH, Pierroutsakou D, Pizzone R, Rapisarda G, Romano S, Spitaleri C, Tang X, Trippella O, Tumino A, Zhang N, Lam Y, Heger A, Jacobs A, Xu S, Ma S, Ru L, Liu E, Liu T, Hamill C, St J. Murphy A, Su J, Fang X, Kwag M, Duy N, Uyen N, Kim D, Liang J, Psaltis A, Sferrazza M, Johnston Z, Li Y. Experimental studies on astrophysical reactions at the low-energy RI beam separator CRIB. EPJ Web Conf 2022. [DOI: 10.1051/epjconf/202226003003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Experimental studies on astrophysical reactions involving radioactive isotopes (RI) often accompany technical challenges. Studies on such nuclear reactions have been conducted at the low-energy RI beam separator CRIB, operated by Center for Nuclear Study, the University of Tokyo. We discuss two cases of astrophysical reaction studies at CRIB; one is for the 7Be+n reactions which may affect the primordial 7Li abundance in the Big-Bang nucleosynthesis, and the other is for the 22Mg(α, p) reaction relevantin X-raybursts.
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15
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Ge Z, Eronen T, Tyrin KS, Kotila J, Kostensalo J, Nesterenko DA, Beliuskina O, de Groote R, de Roubin A, Geldhof S, Gins W, Hukkanen M, Jokinen A, Kankainen A, Koszorús Á, Krivoruchenko MI, Kujanpää S, Moore ID, Raggio A, Rinta-Antila S, Suhonen J, Virtanen V, Weaver AP, Zadvornaya A. ^{159}Dy Electron-Capture: A New Candidate for Neutrino Mass Determination. Phys Rev Lett 2021; 127:272301. [PMID: 35061421 DOI: 10.1103/physrevlett.127.272301] [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: 07/14/2021] [Revised: 09/22/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
The ground state to ground state electron-capture Q value of ^{159}Dy (3/2^{-}) has been measured directly using the double Penning trap mass spectrometer JYFLTRAP. A value of 364.73(19) keV was obtained from a measurement of the cyclotron frequency ratio of the decay parent ^{159}Dy and the decay daughter ^{159}Tb ions using the novel phase-imaging ion-cyclotron resonance technique. The Q values for allowed Gamow-Teller transition to 5/2^{-} and the third-forbidden unique transition to 11/2^{+} state with excitation energies of 363.5449(14) keV and 362.050(40) keV in ^{159}Tb were determined to be 1.18(19) keV and 2.68(19) keV, respectively. The high-precision Q value of transition 3/2^{-}→5/2^{-} from this work, revealing itself as the lowest electron-capture Q value, is used to unambiguously characterize all the possible lines that are present in its electron-capture spectrum. We performed atomic many-body calculations for both transitions to determine electron-capture probabilities from various atomic orbitals and found an order of magnitude enhancement in the event rates near the end point of energy spectrum in the transition to the 5/2^{-} nuclear excited state, which can become very interesting once the experimental challenges of identifying decays into excited states are overcome. The transition to the 11/2^{+} state is strongly suppressed and found unsuitable for measuring the neutrino mass. These results show that the electron-capture in the ^{159}Dy atom, going to the 5/2^{-} state of the ^{159}Tb nucleus, is a new candidate that may open the way to determine the electron-neutrino mass in the sub-eV region by studying electron-capture. Further experimental feasibility studies, including coincidence measurements with realistic detectors, will be of great interest.
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Affiliation(s)
- Z Ge
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - T Eronen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - K S Tyrin
- National Research Centre "Kurchatov Institute," Ploschad' Akademika Kurchatova 1, 123182 Moscow, Russia
| | - J Kotila
- Finnish Institute for Educational Research, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
- Center for Theoretical Physics, Sloane Physics Laboratory Yale University, New Haven, Connecticut 06520-8120, USA
| | - J Kostensalo
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - D A Nesterenko
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - O Beliuskina
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - R de Groote
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A de Roubin
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3-Université de Bordeaux, 19 Chemin du Solarium, CS 10120, F-33175 Gradignan Cedex, France
| | - S Geldhof
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - W Gins
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - M Hukkanen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3-Université de Bordeaux, 19 Chemin du Solarium, CS 10120, F-33175 Gradignan Cedex, France
| | - A Jokinen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A Kankainen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Á Koszorús
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - M I Krivoruchenko
- National Research Centre "Kurchatov Institute," Ploschad' Akademika Kurchatova 1, 123182 Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," B. Cheremushkinskaya 25, 117218 Moscow, Russia
| | - S Kujanpää
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - I D Moore
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A Raggio
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - S Rinta-Antila
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - J Suhonen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - V Virtanen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A P Weaver
- School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4JG, United Kingdom
| | - A Zadvornaya
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
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Ding X, Zhou Z, Ge Z, Guo Y, Chen Y, Nie S, Yu J, Hu M. Soluble Programmed Death-Ligand 1 (sPD-L1) as a Novel Biomarker for the Combination of Anti-PD-L1 Antibody and Radiotherapy for Glioma Patients. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.1576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Ma J, Zhou A, Ge Z. Topic: AS01-Diagnosis/AS01a-Cytomorphology. Leuk Res 2021. [DOI: 10.1016/j.leukres.2021.106681.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Gao XF, Lu S, Han L, Qian XS, Ge Z, Kong XQ, Kan J, Zhang JJ, Chen SL. [Long-term outcomes of intravascular ultrasound-guided drug-eluting stent implantation in patients with chronic kidney disease: ULTIMATE CKD subgroup analysis]. Zhonghua Xin Xue Guan Bing Za Zhi 2021; 49:136-142. [PMID: 33611899 DOI: 10.3760/cma.j.cn112148-20201106-00886] [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 explore the long-term effect of intravascular ultrasound (IVUS) guidance on patients with chronic kidney disease (CKD) undergoing drug-eluting stent (DES) implantation. Methods: Data used in this study derived from ULTIMATE trial, which was a prospective, multicenter, randomized study. From August 2014 to May 2017, 1 448 patients with coronary heart disease undergoing DES implantation were selected from 8 domestic centers and randomly divided into two groups in the ratio of 1∶1 (IVUS or coronary angiography guided stent implantation). A total of 1 443 patients with the baseline serum creatine available were enrolled. The patients were divided into CKD group and non CKD group. CKD was defined as the estimated glomerular filtration rate (eGFR) derived from Cockcroft Gault (CG) formula< 60 ml·min-1·1.73 m-2 for at least 3 months. Primary endpoint of this study was target vessel failure (TVF) at 3 years, including cardiac death, target vessel myocardial infarction, and clinically-driven target vessel revascularization. Kaplan Meier method was used for survival analysis, and log rank test was used to compare the occurrence of end-point events in each group. Cox proportional hazards model was used to calculate HR and 95%CI, and interaction was tested. Multivariate Cox regression was used to analyze the independent influencing factors of TVF. Results: A total of 1 443 patients with coronary heart disease were enrolled in this study, including 349 (24.2%) patients in CKD group and 1 094 patients in non CKD group. In CKD group, IVUS was used to guide stent implantation in 180 cases and angiography was used in 169 cases; in non CKD group, IVUS was used to guide stent implantation in 543 cases and angiography was used in 551 cases. Three-year clinical follow-up was available in 1 418 patients (98.3%). The incidence of TVF in CKD group was 12.0% (42/349), which was higher than that in non CKD group (7.4% (81/1 094) (P = 0.01). The difference was mainly due to the higher cardiac mortality in CKD group (4.6% (16/349) vs. 1.5% (16/1094), P<0.001). In CKD group, the incidence of TVF in patients who underwent IVUS guided stent implantation was lower than that in angiography guided stent implantation (8.3% (15/180) vs. 16.0% (27/169), P = 0.03). There was no significant difference in the incidence of TVF between IVUS guided stent implantation and angiography guided stent implantation in non CKD group (5.9% (32/543) vs. 8.9% (49/551), P = 0.06), and there was no interaction (P = 0.47). Multivariate Cox regression analysis showed that IVUS guidance (HR = 0.56, 95%CI 0.39-0.81, P = 0.002), CKD (HR = 1.83, 95%CI 1.17-2.87, P = 0.010) and stent length (every 10 mm increase) (HR = 1.11, 95%CI 1.04-1.19, P = 0.002) were independent risk factors for TVF within 3 years after DES implantation. Conclusions: CKD patients undergoing DES implantation are associated with a higher risk of 3-year TVF. More importantly, the risk of TVF could be significantly decreased through IVUS guidance in comparison with angiography guidance in patients with CKD.
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Affiliation(s)
- X F Gao
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - S Lu
- Department of Cardiology, First People's Hospital of Taicang, Taicang 215400, China
| | - L Han
- Department of Cardiology, Changshu No. 1 People's Hospital, Changshu 215500, China
| | - X S Qian
- Department of Cardiology, First People's Hospital of Zhangjiagang, Zhangjiagang 215600, China
| | - Z Ge
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - X Q Kong
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - J Kan
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - J J Zhang
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - S L Chen
- Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
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Wan F, Ge Z. [Textual research on lost ancient Chinese medical books in Bencao Tujing]. Zhonghua Yi Shi Za Zhi 2021; 51:24-27. [PMID: 33794580 DOI: 10.3760/cma.j.cn112155-20201229-00204] [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
Bencao Tujing(, Illustration Classics for Materia Medica) occupies an irreplaceable academic position in the academic history of Chinese Materia Medica. It was written in the early Song Dynasty. The contents of Chinese medical books before Song Dynasty have not been revised by Song Dynasty officials, and the original appearance of earlier documents have been preserved. Domestic and foreign scholars mainly focus on the textual research of Chinese Materia medica patterns, and academic value research. The special research on the Lost ancient Chinese medical books were relatively rare. According to the names of"XX Fang"or"Someone Fang"in Bencao Tujing, about 46 kinds of Lost ancient Chinese medical books have been found. Taking Wei Zhou's Du Xing Fang, Liu Yuxi's Chuan Xin Fang, Tian Bao Dan Fang Tu (Tian Bao Dan Xing Fang) as examples, it is found that Lost ancient Chinese medical books recorded in Bencao Tujing have abundant materials and clear clues, which have further exploration space for the research and collection of Chinese medical books.
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Affiliation(s)
- F Wan
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Z Ge
- Institute of Information on Traditional Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
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Dupont E, Bossant M, Capote R, Carlson A, Danon Y, Fleming M, Ge Z, Harada H, Iwamoto O, Iwamoto N, Kimura A, Koning A, Massimi C, Negret A, Noguere G, Plompen A, Pronyaev V, Rimpault G, Simakov S, Stankovskiy A, Sun W, Trkov A, Wu H, Yokoyama K. HPRL – International cooperation to identify and monitor priority nuclear data needs for nuclear applications. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202023915005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The OECD-NEA High Priority Request List (HPRL) is a point of reference to guide and stimulate the improvement of nuclear data for nuclear energy and other applications, and a tool to bridge the gap between data users and producers. The HPRL is application-driven and the requests are submitted by nuclear data users or representatives of the user’s communities. A panel of international experts reviews and monitors the requests in the framework of an Expert Group mandated by the NEA Nuclear Science Committee Working Party on International Nuclear Data Evaluation Cooperation (WPEC). After approval, individual requests are classified to three categories: high priority requests, general requests, and special purpose requests (e.g., dosimetry, standards). The HPRL is hosted by the NEA in the form of a relational database publicly available on the web. This paper provides an overview of HPRL entries, status and outlook. Examples of requests successfully completed are given and new requests are described with emphasis on updated nuclear data needs in the fields of nuclear energy, neutron standards and dosimetry.
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21
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Ge Z, Zhou B, Zheng X, Yang M, Lü J, Deng H, Tang K, Chen W. [Circular RNA expression pattern and competing endogenous RNA network involved in rotator cuff tendinopathy]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2020; 34:608-614. [PMID: 32410429 DOI: 10.7507/1002-1892.201911094] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Objective To detect the differentially expressed circular RNA (circRNA) in rotator cuff tendinopathy and analyze the potential molecular mechanism of these parental genes. Methods Ten supraspinatus tendons donated from patients who underwent tendon repair surgery between June 2018 and June 2019 were used for RNA-sequence. All rotator cuff tendinopathy and normal tendon samples were confirmed by MRI, histological staining, and observation by arthroscopy. All pathological tendons were matched with tendon samples for patients' age, gender, body mass index, and Bonar score. The bioinformatic analysis was performed based on the differentially expressed circRNA and their parental genes, including gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and competing endogenous RNA (ceRNA) network construction. Results There were 94 differentially expressed circRNAs, including 31 up-regulated and 63 down-regulated, detected between the rotator cuff tendinopathy and normal tendon samples with |log2 fold change (FC)| >2, P<0.05. GO analysis showed that the genes were mostly enriched in response to cyclic adenosine monophosphate (cAMP). KEGG pathway analysis showed that the most genes were enriched in extracellular matrix-receptor interaction, protein digestion and absorption, cell cycle, and nuclear factor κB signaling pathway. ceRNA networks showed the interactions among circRNAs, mRNAs, and miRNAs. And circRNA.8951-has-miR-6089-DNMT3B was the most sum max energy. Conclusion This bioinformatic study reveals several potential therapeutic targets for rotator cuff tendinopathy, which paves the way to better treatment and prevention of this disorder.
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Affiliation(s)
- Zilu Ge
- Department of Orthopeadics/Sports Medicine Center, the First Affiliated Hospital of the Army Medical University, Chongqing, 400038, P.R.China
| | - Binghua Zhou
- Department of Orthopeadics/Sports Medicine Center, the First Affiliated Hospital of the Army Medical University, Chongqing, 400038, P.R.China
| | - Xiaolong Zheng
- Department of Orthopeadics/Sports Medicine Center, the First Affiliated Hospital of the Army Medical University, Chongqing, 400038, P.R.China
| | - Mingyu Yang
- Department of Orthopeadics/Sports Medicine Center, the First Affiliated Hospital of the Army Medical University, Chongqing, 400038, P.R.China
| | - Jingtong Lü
- Department of Orthopeadics/Sports Medicine Center, the First Affiliated Hospital of the Army Medical University, Chongqing, 400038, P.R.China
| | - Honghao Deng
- Department of Orthopeadics/Sports Medicine Center, the First Affiliated Hospital of the Army Medical University, Chongqing, 400038, P.R.China
| | - Kanglai Tang
- Department of Orthopeadics/Sports Medicine Center, the First Affiliated Hospital of the Army Medical University, Chongqing, 400038, P.R.China
| | - Wan Chen
- Department of Orthopeadics/Sports Medicine Center, the First Affiliated Hospital of the Army Medical University, Chongqing, 400038, P.R.China
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Ge Z, Ma L, Tang H, Yang M, Yang A, Yuan C, Tao X, Zhou B, Tang K, Chen W. Comparison of dorsal closing wedge calcaneal osteotomy versus posterosuperior prominence resection for the treatment of Haglund syndrome. J Orthop Surg Res 2020; 15:168. [PMID: 32381106 PMCID: PMC7206805 DOI: 10.1186/s13018-020-01687-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 04/29/2020] [Indexed: 11/22/2022] Open
Abstract
Background Haglund syndrome is a common disease that causes posterior heel pain. This study compared the clinical outcomes of dorsal closing wedge calcaneal osteotomy (DCWCO) and posterosuperior prominence resection (PPR) for the treatment of Haglund syndrome. Methods This retrospective study included 12 patients who underwent DCWCO and 32 patients who underwent PPR from January 2010 to August 2016. Patients were evaluated using the American Orthopedic Foot Ankle Society ankle-hindfoot scale (AOFAS), Victorian Institute of Sport Assessment Scale for Achilles tendinopathy (VISA-A), Fowler-Philip angle, Bohler’s angle, and calcaneal pitch angle preoperatively and postoperatively (at 3 months, 6 months, 1 year, and the latest follow-up). Results Both groups exhibited a significant increase in their AOFAS and VISA-A scores after surgery. The DCWCO group had lower AOFAS scores than the PPR group at 6 months (77.6 ± 5.1 vs. 82.8 ± 7.8; P = 0.037) but had higher scores at the latest follow-up (98.2 ± 2.3 vs. 93.4 ± 6.1; P = 0.030). The DCWCO group had lower VISA-A scores at 3 months (56.9 ± 13.9 vs. 65.2 ± 11.0; P = 0.044) but higher scores at the latest follow-up (98.2 ± 2.6 vs. 94.3 ± 5.0; P = 0.010) than the PPR group. Both groups exhibited significant changes in the Fowler-Philip angle and Bohler’s angle after surgery. The postoperative Fowler-Philip angle of the DCWCO group was greater than that of the PPR group (35.9° ± 4.9° vs. 31.4° ± 6.2°; P = 0.026). However, there was no statistically significant difference in any other angle of the two groups postoperatively. Conclusions Compared to the PPR group, the DCWCO group had poorer short-term clinical outcomes but provide better long-term function and symptom remission. This method can be a good option for those patients with higher functional expectations.
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Affiliation(s)
- Zilu Ge
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China
| | - Lin Ma
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China
| | - Hong Tang
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China
| | - Mingyu Yang
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China
| | - Aining Yang
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China
| | - Chengsong Yuan
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China
| | - Xu Tao
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China
| | - Binghua Zhou
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China
| | - Kanglai Tang
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China
| | - Wan Chen
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street 30, Shapingba District, Chongqing, 400038, China.
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Abstract
Background Rotator cuff tendinopathy (RCT) is a common musculoskeletal disorder in the shoulder, whose underlying mechanism is unknown. Long non-coding RNAs (lncRNAs) are involved in the development of various diseases, but little is known about their potential roles in RCT. Methods In this study, we profiled lncRNAs and mRNAs involved in RCT in comparison with the normal tendon (NT) by RNA sequencing (RNA-Seq), to identify potential therapeutic targets. Gene ontology (GO), Kyoto encyclopedia of genes and genomes (KEGG) pathway, competing endogenous RNA (ceRNA), and co-expression network construction were used to identify the potential functions of these RNAs. Three lncRNAs and three mRNAs were validated by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Results In total, 419 lncRNAs and 1,541 mRNAs were differentially expressed between the RCT and NT groups with a fold change of >2 and P of <0.01. The GO and KEGG pathway analyses showed that the differentially expressed mRNAs were mainly enriched in complement activation and involved in the citrate cycle. The ceRNA network showed the interaction of differentially expressed RNAs, comprising 139 lncRNAs, 126 mRNAs, and 35 miRNAs. NONHSAT209114.1, ENST00000577806, NONHSAT168464.1, PLK2, TMEM214, and IGF2 were validated by PCR. We constructed a co-expressed network of these validated RNAs. Conclusions We preliminarily analyzed the profile of lncRNAs and mRNAs in RCT. The bioinformatic analysis revealed several potential therapeutic targets for RCT.
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Affiliation(s)
- Zilu Ge
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Hong Tang
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Jingtong Lyu
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Binghua Zhou
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Mingyu Yang
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Kanglai Tang
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Wan Chen
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
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Ge Z, Tang H, Chen W, Wang Y, Yuan C, Tao X, Zhou B, Tang K. Downregulation of type I collagen expression in the Achilles tendon by dexamethasone: a controlled laboratory study. J Orthop Surg Res 2020; 15:70. [PMID: 32093733 PMCID: PMC7038574 DOI: 10.1186/s13018-020-01602-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Accepted: 02/17/2020] [Indexed: 12/16/2022] Open
Abstract
Background Spontaneous Achilles tendon rupture associated with long-term dexamethasone (Dex) use has been reported. However, few studies have investigated the potential mechanism. The aim of this study was to evaluate the effects of oral Dex on type I collagen in humans and rats and its association with tendon rupture. Methods First, six Achilles tendons from patients who received long-term Dex treatment, and another six normal tendons were harvested for histological evaluation. Secondly, 8-week-old rats (n = 72) were randomly assigned to a Dex group or a control group. Type I collagen was studied at the mechanical, histological, and molecular levels after 3 and 5 weeks. Tenocytes isolated from normal human and rat tendon were used to investigate the effect of Dex on cellular scale. Results Histological analysis of human and rat tendon tissue revealed an irregular, disordered arrangement of type I collagen in the Dex group compared with the control group. In addition, In the Dex+ group, type I collagen expression decreased in comparison with the Dex− group in both human and rat tenocytes. The mechanical strength of tendons was significantly reduced in the Dex group (68.87 ± 11.07 N) in comparison with the control group (81.46 ± 7.62 N, P = 0.013) after 5 weeks. Tendons in the Dex group were shorter with smaller cross-sectional areas (10.71 ± 0.34 mm2, 1.44 ± 0.22 mm2, respectively) after 5 weeks than those in the control group (11.13 ± 0.50 mm2, P = 0.050, 2.74 ± 0.34 mm2, P < 0.001, respectively). Conclusions This finding suggests long-term use of Dex that decreases the expression of type I collagen at molecular and tissue levels both in human and rat Achilles tendons. Furthermore, Dex decreases the mechanical strength of the tendon, thereby increasing the risk of Achilles tendon rupture.
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Affiliation(s)
- Zilu Ge
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street. 30, Shapingba District, Chongqing, 400038, China
| | - Hong Tang
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street. 30, Shapingba District, Chongqing, 400038, China
| | - Wan Chen
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street. 30, Shapingba District, Chongqing, 400038, China.
| | - Yunjiao Wang
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street. 30, Shapingba District, Chongqing, 400038, China
| | - Chengsong Yuan
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street. 30, Shapingba District, Chongqing, 400038, China
| | - Xu Tao
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street. 30, Shapingba District, Chongqing, 400038, China
| | - Binghua Zhou
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street. 30, Shapingba District, Chongqing, 400038, China
| | - Kanglai Tang
- Department of Orthopedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street. 30, Shapingba District, Chongqing, 400038, China
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25
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Ge Z, Wan F. [Textual research on lost articles in Mei Shi Fang]. Zhonghua Yi Shi Za Zhi 2020; 50:33-38. [PMID: 32564535 DOI: 10.3760/cma.j.issn.0255-7053.2020.01.006] [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
Mei Shi fang() is a lost medical prescription book. Its title came from the "book of classics and history" , a chapter of Zhenglei Bencao (, Collected Classified Materia Medica). 117 pieces of lost articles were preserved in the book. In addition to Zhenglei Bencao, a total of 50 kinds of medical books explicitly quoted some of the lost articles in Mei Shi Fang. Among them, 38 kinds of medical books did not exceed the scope of the articles of Mei Shi Fang cited in Zhenglei Bencao, 12 kinds of medical books contained the articles of Mei Shi Fang which did not quoted in Zhenglei Bencao. It is speculated that Mei Shi Fang may still exist in the Yangtze River basin from 1552 to 1578. In terms of the existing articles of Mei Shi Fang, it has academic origin with Zhouhou Beiji Fang (, Handbook of Prescriptions for Emergency).
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Affiliation(s)
- Z Ge
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - F Wan
- China Institute for History of Medicine and Medical Literature, China Academy of Chinese Medical Sciences, Beijing 100700, China
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26
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Fleming M, Chadwick M, Brown D, Capote R, Ge Z, Herman M, Ignatyuk A, Ivanova T, Iwamoto O, Koning A, Plompen A, Trkov A. Results of the Collaborative International Evaluated Library Organisation (CIELO) Project. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202023915003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Simulation of nuclear systems requires complete data that represents the relevant nuclear physics. This requires many types of experimental measurements, theoretical physics, semi-empirical models and software systems, as well as experts to integrate and guide the process. This discipline is collectively known as nuclear data, and separate programmes within various European countries, the USA, Japan, Russia, and other OECD Nuclear Energy Agency (NEA) member countries have been operating for many decades. The NEA Working Party on International Nuclear Data Evaluation Co-operation (WPEC) exists to improve the quality and completeness of nuclear data by bringing together representatives of the major nuclear data evaluation projects of NEA member countries and selected Invitees. The Sub- and Expert Groups of the WPEC typically focus on specific technical topics, while the Collaborative International Evaluated Library Organisation Pilot Project (CIELO) was established to generate complete evaluations for a selection of the most important isotopes for criticality in nuclear technologies: 235,238U, 239Pu, 56Fe, 16O and 1H.
This project stimulated numerous activities, resulting in major contributions to the Special Issue of the Nuclear Data Sheets journal and the production of a suite of new nuclear data evaluations that have been incorporated in major nuclear data libraries ENDF and JEFF. The outcomes of these evaluations include significant harmonisa-tion of discrepancies between the independent programmes, improvement in the performance for international standard nuclear criticality and neutron transmission benchmarks, complete uncertainties for nearly all parameters and the utilisation of modern data storage technologies. This work has leveraged the considerable, parallel experimental work in collecting improved experimental measurements to support nuclear data and highlighted high-priority areas for further study. A productive and durable framework for international evaluation has been established which will build upon the lessons learned. These will continue through new WPEC groups and a new IAEA evaluation network, which has been initiated in response to the success of the CIELO project. This article summaries some performance feedback on the CIELO evaluations, including recent results, and will describe ongoing and future, planned CIELO-related collaborations to further advance our understanding.
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Fleming M, Bernard D, Brown D, Chadwick M, de Saint Jean C, Dupont E, Ge Z, Harada H, Hawari A, Herman M, Iwamoto O, Kodeli I, Koning A, Malvagi F, McNabb D, Mills R, Noguère G, Palmiotti G, Plompen A, Salvatores M, Sobes V, White M, Yokoyama K. Overview of the OECD-NEA Working Party on International Nuclear Data Evaluation Cooperation (WPEC). EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202023915002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The OECD Nuclear Energy Agency (NEA) Working Party on International Nuclear Data Evaluation Cooperation (WPEC) was established in 1989 to facilitate collaboration in nuclear data activities. Over its thirty year history, different Subgroups have been created to address topics in nearly every aspect of nuclear data, including: experimental measurements, evaluation, validation, model development, quality assurance of databases and the development of software tools.
WPEC has recently completed activities on fission yield evaluation, the general nuclear database structure (GNDS) to replace the ENDF-6 format, methods to provide feedback to evaluation, studies of specific capture cross sections, new methods in thermal scattering kernel evaluation and the Collaborative International Evaluated Library Organisation (CIELO) Pilot Project. Ongoing activities in GNDS application programming interface (API) development, methods for covariance evaluation and quality assurance in nuclear data validation using the International Criticality Safety Benchmark Evaluation Project (ICSBEP) database are complemented by the work of two Expert Groups that oversee the High-Priority Request List (HPRL) for Nuclear Data and the continuous development of the GNDS. New activities on the use of integral experiments for nuclear data validation and adjustment, as well as the use of the Shielding Integral Benchmark Archive and Database (SINBAD) for validation have begun and will be coordinated alongside future Subgroups.
After three decades we will review the status of WPEC, how it integrates other collections and activities organised by the NEA and how it dovetails with the initiatives of the IAEA and other bodies to effectively coordinate international activities in nuclear data.
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Ge Z, Li LF, Wang CY, Wang Y, Ma WL. CircMTO1 inhibits cell proliferation and invasion by regulating Wnt/β-catenin signaling pathway in colorectal cancer. Eur Rev Med Pharmacol Sci 2019; 22:8203-8209. [PMID: 30556859 DOI: 10.26355/eurrev_201812_16513] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
OBJECTIVE Circular RNAs (circRNAs) play critical roles in disease incidence. However, the roles of circRNAs in colorectal cancer (CRC) progression remain largely unknown. We explored the expression of circMTO1 in CRC and elucidated the underlying molecular mechanisms. PATIENTS AND METHODS Quantitative Real-time-PCR (qRT-PCR) was used to explore circMTO1 expression in CRC tissues and cell lines. The effect of circMTO1 on the biological function of CRC cells was analyzed by Cell Counting Kit-8 (CCK-8) assay, Edu assay, colony formation assay, wound-healing assay and transwell invasion assay. Gene expression and signaling pathway were detected by qRT-PCR and Western blot. RESULTS QRT-PCR showed that circMTO1 expression was significantly decreased in CRC tissues and cell lines compared with adjacent non-tumor tissues and human normal colon epithelial cell line (FHC), respectively. Patients with low circMTO1 expression were correlated with advanced TNM stage, lymph node metastasis, and poor overall survival. Function assays demonstrated that circMTO1 inhibition promoted CRC cells proliferation and invasion ability in vitro. In addition, we showed that circMTO1 inhibition could promote CRC progression via activating Wnt/β-catenin signaling pathway. CONCLUSIONS We showed that circMTO1 could act as a tumor suppressor affecting the growth and invasion of CRC cells via regulating Wnt/β-catenin signaling pathway, providing a novel potential biomarker and therapeutic target for CRC treatment.
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Affiliation(s)
- Z Ge
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng, Henan, China.
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Ge Z, Pan C, Shu X, Pan W, Zhou D, Li W, Chen H, Wei L, Ge J. P916The effect of a novel, user-friendly, transcatheter edge-to-edge mitral valve repair device in a porcine model of mitral regurgitation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0512] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objective
A new technique has been devised to treat mitral regurgitation (MR) through the transapical route by replicating the edge-to-edge repair surgery. This system encompasses an easy-to-use leaflet clamp and a smaller-sized delivery system (14F–16F). We aimed to evaluate the effectiveness of this device in a porcine model of acute MR.
Methods
Acute MR was induced in 36 anesthetized porcine subjects by severing the major chordae supporting the corresponding segment of the leaflet. This device was then transapically implanted on the prolapsing segment under 3D epicardial echocardiographic guidance. All of the animals were killed 30 days after the procedure to verify the proper location of the implanted devices.
Results
Cutting the major chordae induced an eccentric MR jet (MR grade: 3+, 27.8%/4+, 72.2%) in all of the animals. Every single pig was then successfully implanted with one clamp. The duration of catheterization ranged from 18 to 40 minutes. Overt MR reduction was observed following the procedure through echocardiography; residual MR was mild in 8 cases, trivial in 19 cases, and absent in 9 cases. In terms of hemodynamic parameters, the mean and maximum mitral valve pressure gradients were increased significantly (p<0.01), but these values were less than 4 mmHg in all of the cases. Autopsy demonstrated that all but one device were precisely placed to clip the prolapsing segment of the mitral valve, and there was no evidence of thrombosis, thromboembolism or impairment of the cardiac structure.
Table 1. Changes in hemodynamic parameters, cardiac size, and functional parameters after the procedure Preoperation Postoperation P value MR-maxA (mm2) 7.27±2.13 1.54±1.29 0.000 MVPG-max (mmHg) 1.95±0.47 3.66±0.62 0.000 MVPG-mean (mmHg) 0.87±0.31 1.7±0.28 0.000 LVEDD (mm) 46.08±2.85 46.44±3.53 0.239 LVESD (mm) 29.11±3.44 29.08±3.62 0.940 LVEF (%) 66.53±6.4 67.14±4.93 0.256 LAD (mm) 35.75±2.24 36.42±1.99 0.057 LAA (mm2) 12.95±2.22 12.64±1.55 0.301
Figure 1
Conclusions
Transapical implantation of the novel mitral valve repair device is effective and safe in reducing acutely induced MR in pigs; thus, suggesting that it has great potential for clinical benefit in patients with MR.
Acknowledgement/Funding
Shanghai Science and Technology Committee
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Affiliation(s)
- Z Ge
- Zhongshan Hospital- Fudan University, Shanghai, China
| | - C Pan
- Zhongshan Hospital- Fudan University, Shanghai, China
| | - X Shu
- Zhongshan Hospital- Fudan University, Shanghai, China
| | - W Pan
- Zhongshan Hospital- Fudan University, Shanghai, China
| | - D Zhou
- Zhongshan Hospital- Fudan University, Shanghai, China
| | - W Li
- Zhongshan Hospital- Fudan University, Shanghai, China
| | - H Chen
- Zhongshan Hospital- Fudan University, Shanghai, China
| | - L Wei
- Zhongshan Hospital- Fudan University, Shanghai, China
| | - J Ge
- Zhongshan Hospital- Fudan University, Shanghai, China
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Wang Y, He G, Wang F, Zhang C, Ge Z, Zheng X, Deng H, Yuan C, Zhou B, Tao X, Zhang J, Tang K. Aspirin inhibits adipogenesis of tendon stem cells and lipids accumulation in rat injury tendon through regulating PTEN/PI3K/AKT signalling. J Cell Mol Med 2019; 23:7535-7544. [PMID: 31557405 PMCID: PMC6815914 DOI: 10.1111/jcmm.14622] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/16/2019] [Accepted: 08/04/2019] [Indexed: 01/25/2023] Open
Abstract
Tendon injury repairs are big challenges in sports medicine, and fatty infiltration after tendon injury is very common and hampers tendon injury healing process. Tendon stem cells (TSCs), as precursors of tendon cells, have shown promising effect on injury tendon repair for their tenogenesis and tendon extracellular matrix formation. Adipocytes and lipids accumulation is a landmark event in pathological process of tendon injury, and this may induce tendon rupture in clinical practice. Based on this, it is important to inhibit TSCs adipogenesis and lipids infiltration to restore structure and function of injury tendon. Aspirin, as the representative of non‐steroidal anti‐inflammatory drugs (NSAIDs), has been widely used in tendon injury for its anti‐inflammatory and analgesic actions, but effect of aspirin on TSCs adipogenesis and fatty infiltration is still unclear. Under adipogenesis conditions, TSCs were treated with concentration gradient of aspirin. Oil red O staining was performed to observe changes of lipids accumulation. Next, we used RNA sequencing to compare profile changes of gene expression between induction group and aspirin‐treated group. Then, we verified the effect of filtrated signalling on TSCs adipogenesis. At last, we established rat tendon injury model and compared changes of biomechanical properties after aspirin treatment. The results showed that aspirin decreased lipids accumulation in injury tendon and inhibited TSCs adipogenesis. RNA sequencing filtrated PTEN/PI3K/AKT signalling as our target. After adding the signalling activators of VO‐Ohpic and IGF‐1, inhibited adipogenesis of TSCs was reversed. Still, aspirin promoted maximum loading, ultimate stress and breaking elongation of injury tendon. In conclusion, by down‐regulating PTEN/PI3K/AKT signalling, aspirin inhibited adipogenesis of TSCs and fatty infiltration in injury tendon, promoted biomechanical properties and decreased rupture risk of injury tendon. All these provided new therapeutic potential and medicine evidence of aspirin in treating tendon injury and tendinopathy.
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Affiliation(s)
- Yunjiao Wang
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Gang He
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Feng Wang
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Chenke Zhang
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Zilu Ge
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Xiaolong Zheng
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Honghao Deng
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Chengsong Yuan
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Binghua Zhou
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Xu Tao
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Jiqiang Zhang
- Department of Neurology, Third Military Medical University, Chongqing, China
| | - Kanglai Tang
- Department of Orthopaedics/Sports Medicine Center, State Key Laboratory of Trauma, Burn and Combined Injury, Southwest Hospital, Third Military Medical University, Chongqing, China
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Ning T, Zhang K, Heng BC, Ge Z. Diverse effects of pulsed electrical stimulation on cells - with a focus on chondrocytes and cartilage regeneration. Eur Cell Mater 2019; 38:79-93. [PMID: 31478555 DOI: 10.22203/ecm.v038a07] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Biological effects of pulsed electrical stimulation (PES) on cells and tissues have been intensively studied with the aim of advancing their biomedical applications. These effects vary significantly depending on PES parameters, cell and tissue types, which can be attributed to the diverse variety of signaling pathways, ion channels, and epigenetic mechanisms involved. The development of new technology platforms, such as nanosecond pulsed electric fields (nsPEFs) with finely tuned parameters, have added further complexity. The present review systematically examines current research progress in various aspects of PES, from physical models to biological effects on cells and tissues, including voltage-sensing domains of voltage-gated channels, pore formation, intracellular components/organelles, and signaling pathways. Emphasis is placed on the complexity of PES parameters and inconsistency of induced biological effects, with the aim of exploring the underlying physical and cellular mechanisms of the physiological effects of electrical stimulation on cells. With chondrogenic differentiation of stem cells and cartilage regeneration as examples, the underlying mechanisms involved were reviewed and analyzed, hoping to move forward towards potential biomedical applications. Hopefully, the present review will inspire more interest in the wider clinical applications of PES and lay the basis for further comprehensive studies in this field.
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Affiliation(s)
| | | | | | - Z Ge
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, 100871,
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Echeverria GV, Ge Z, Seth S, Jeter-Jones SL, Zhang X, Zhou X, Cai S, Tu Y, McCoy A, Peoples M, Lau R, Shao J, Sun Y, Bristow C, Carugo A, Ma X, Harris A, Wu Y, Moulder S, Symmans WF, Marszalek JR, Heffernan TP, Chang JT, Piwnica-Worms H. Abstract GS5-05: Resistance to neoadjuvant chemotherapy in triple negative breast cancer mediated by a reversible drug-tolerant state. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-gs5-05] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [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
Approximately 50% of patients with localized triple negative breast cancer (TNBC) have substantial residual cancer burden following treatment with neoadjuvant chemotherapy (NACT), resulting in distant metastasis and death for most of these patients. While genomic and phenotypic intra-tumor heterogeneity are pervasive features of TNBCs at the time of diagnosis, the functional contributions of heterogeneous tumor cell populations to chemoresistance have not been elucidated.
To investigate tumor evolution accompanying NACT, we employed orthotopic patient-derived xenograft (PDX) models of treatment-naïve TNBC, which retain intra-tumor heterogeneity characteristic of human TNBC. We discovered that some PDX models initially exhibited partial sensitivity to standard front-line NACT (Adriamycin plus Cytoxan, AC). Following AC, residual tumors were resistant to chemotherapy but repopulated tumors with chemo-sensitive cells if left untreated, indicating that tumor cells possessed inherent plasticity. To identify the tumor cell subpopulation(s) conferring chemoresistance, we conducted barcode-mediated clonal tracking in three independent PDX models by introducing a high-complexity pooled lentiviral barcode library into PDX tumor cells which were then orthotopically engrafted into recipient mice. Strikingly, residual tumors maintained the same heterogeneous clonal architecture as naïve tumors. Concordantly, whole-exome sequencing revealed conservation of genomic subclonal architecture throughout treatment. These results were corroborated by genomic sequencing of serial biopsies pre- and post-AC obtained directly from TNBC patients enrolled on an ongoing clinical trial at MD Anderson (ARTEMIS; NCT02276443). Together, these studies revealed that genomically distinct pre-treatment subclones were equally capable of surviving AC to reconstitute tumors after treatment.
To identify functional addictions of residual tumor cells, we conducted histologic and transcriptomic profiling. Residual tumors following AC-treatment exhibited extensive fibrotic desmoplasia and tumor cell pleomorphism in both PDX models and in serial biopsies obtained from TNBC patients enrolled on the ARTEMIS trial. Strikingly, these AC-induced features were reverted upon regrowth of residual tumors in PDXs and in patients' tumors. Similarly, residual tumors exhibited unique transcriptomic features, many of which are also de-regulated in cohorts of human TNBCs undergoing chemotherapy treatment. These features were nearly completely reverted after tumors regrew, suggesting that the residual tumor state may be a unique and transient therapeutic window. Gene set enrichment analyses revealed that residual tumors had increased activation of oxidative phosphorylation and decreased glycolytic signaling. Pharmacologic targeting of oxidative phosphorylation with a small-molecule inhibitor of mitochondrial electron transport chain complex I (IACS-010759) significantly delayed the regrowth of AC-treated residual tumors in three independent PDX models. Collectively, these studies reveal that a reversible phenotypic state can confer chemoresistance in the absence of genomic selection and that the residual tumor state is a novel therapeutic window for chemo-refractory TNBC.
Citation Format: Echeverria GV, Ge Z, Seth S, Jeter-Jones SL, Zhang X, Zhou X, Cai S, Tu Y, McCoy A, Peoples M, Lau R, Shao J, Sun Y, Bristow C, Carugo A, Ma X, Harris A, Wu Y, Moulder S, Symmans WF, Marszalek JR, Heffernan TP, Chang JT, Piwnica-Worms H. Resistance to neoadjuvant chemotherapy in triple negative breast cancer mediated by a reversible drug-tolerant state [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr GS5-05.
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Affiliation(s)
- GV Echeverria
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - Z Ge
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - S Seth
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - SL Jeter-Jones
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - X Zhang
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - X Zhou
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - S Cai
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - Y Tu
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - A McCoy
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - M Peoples
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - R Lau
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - J Shao
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - Y Sun
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - C Bristow
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - A Carugo
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - X Ma
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - A Harris
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - Y Wu
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - S Moulder
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - WF Symmans
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - JR Marszalek
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - TP Heffernan
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - JT Chang
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - H Piwnica-Worms
- The University of Texas MD Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
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Echeverria GV, Seth S, Ge Z, Sun Y, DiFrancesco E, Lau R, Marszalek J, Moulder S, Symmans F, Heffernan TP, Chang JT, Piwnica-Worms H. Abstract P4-03-02: Characterizing and targeting chemoresistant subclones in patient-derived xenograft models of triple negative breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p4-03-02] [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
Fifty percent of all triple negative breast cancer (TNBC) patients harbor significant residual tumor burden following treatment with standard neoadjuvant chemotherapy (NACT), resulting in poor prognosis. Recent studies in TNBC have revealed extensive intra-tumoral heterogeneity at the time of diagnosis and throughout disease progression, but the relative contributions of these heterogeneous populations of tumor cells to chemoresistance are not well understood.
The primary tumor, dermal metastasis, and germline reference were obtained from a patient with untreated metastatic TNBC. Tumor cells were engrafted into the humanized mammary fat pads of NOD/SCID mice to establish PDX models of the primary (PIM001-P) and metastatic (PIM001-M) tumors. RNA sequencing and whole-exome sequencing (WES), performed on the patient's primary and metastatic tumors and the first- and third- passage PDX models revealed transcriptomic profiles and subclonal heterogeneity of the patient's tumors were recapitulated in the PDX models.
Treatment of mice engrafted with PIM001-P tumors with NACT (Adriamycin plus cyclophosphamide, AC) resulted in partial response, the magnitude of which was diminished in mice bearing PIM001-M tumors. Tumor subclones were tracked during chemotherapy treatment in mice engrafted with PIM001-P tumors using lentiviral non-targeting DNA barcodes. Residual tumors maintained the clonal architecture of untreated tumors, and deep WES revealed stable maintenance of somatic mutant allele frequencies throughout treatment. Therefore, selection of pre-existing resistant clones did not lead to AC resistance in this model. Interestingly, only 25% of residual tumor clones contributed to primary relapse once treatment was halted, suggesting only a subpopulation of tumor cells was able to reconstitute the tumor.
RNA sequencing and reverse phase protein array revealed that while vehicle-treated and regrown tumors were highly similar, residual tumors harbored a unique profile characterized by numerous significant alterations in RNA and protein levels. Together, these results suggest that residual tumors enter into a transient drug-resistant state that is reversible. Residual tumors were enriched for alterations in pathways such as metabolism, extracellular matrix remodeling, and cell-cell communication. Pharmacologic targeting of the residual tumor state with an inhibitor of mitochondrial oxidative phosphorylation led to significant inhibition of tumor regrowth following AC treatment. Additional vulnerabilities identified in residual tumors are being targeted therapeutically with the goal of eradicating residual tumor cells.
Citation Format: Echeverria GV, Seth S, Ge Z, Sun Y, DiFrancesco E, Lau R, Marszalek J, Moulder S, Symmans F, Heffernan TP, Chang JT, Piwnica-Worms H. Characterizing and targeting chemoresistant subclones in patient-derived xenograft models of triple negative breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P4-03-02.
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Affiliation(s)
- GV Echeverria
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - S Seth
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - Z Ge
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - Y Sun
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - E DiFrancesco
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - R Lau
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - J Marszalek
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - S Moulder
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - F Symmans
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - TP Heffernan
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - JT Chang
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
| | - H Piwnica-Worms
- The University of Texas M.D. Anderson Cancer Center, Houston, TX; Institute for Applied Cancer Science, The University of Teas M.D. Anderson Cancer Center, Houston, TX; The University of Texas Health Science Center, Houston, TX
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Powell E, Shao J, Picon HM, Ge Z, Echeverria GV, Peoples M, Bristow C, Cai S, Tu Y, McCoy AM, Piwnica-Worms D, Draetta G, Edwards JR, Moulder SL, Symmans WF, Heffernan TP, Liang H, Piwnica-Worms H. Abstract GS6-06: Identifying metastatic drivers in patient-derived xenograft models of triple negative breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-gs6-06] [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
Metastases are responsible for the vast majority of deaths due to breast cancer. Triple negative breast cancer (TNBC) is an aggressive subtype of breast cancer characterized by high rates of metastasis and poor prognosis. We are employing patient derived xenograft (PDX) models of TNBC to identify drivers of metastasis. Tumor samples are obtained from the breast tumors of patients with TNBC and engrafted immediately into the humanized mammary fat pads of immune compromised mice. Lentiviral transduction was employed to express bioluminescent and fluorescent markers in two independent PDX models of TNBC. Using these models, we demonstrated that human breast tumors are capable of completing all stages of the metastatic cascade in mice, and metastatic lesions are observed in organs normally found in patients with metastatic breast cancer including lung, liver, bone, brain, and lymph nodes. Dynamic and reversible epithelial to mesenchymal transition (EMT) was observed as tumors metastasized to lung and were re-passaged to recipient mouse mammary glands. Lung metastases were isolated using bioluminescence imaging and lung metastasis gene expression signatures were generated. Metastasis signatures from two independent PDX models were compared to identify genes that were commonly de-regulated in lung metastases relative to corresponding mammary tumors. Comprehensive gain-of-function screens were then conducted in vivo to identify functional drivers of TNBC metastasis. Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5) was identified as a metastatic driver in this screen. CEACAM5 mRNA and protein levels were elevated in lung metastases relative to corresponding mammary gland tumors in mice. In addition, we demonstrated that CEACAM5 expression was upregulated in the lung metastases of breast cancer patients, and its expression inversely correlated with patient survival. Our data indicate that the metastatic function of CEACAM5 is to promote growth of breast tumors in the lung by inducing MET (mesenchymal to epithelial transition).
Citation Format: Powell E, Shao J, Picon HM, Ge Z, Echeverria GV, Peoples M, Bristow C, Cai S, Tu Y, McCoy AM, Piwnica-Worms D, Draetta G, Edwards JR, Moulder SL, Symmans WF, Heffernan TP, Liang H, Piwnica-Worms H. Identifying metastatic drivers in patient-derived xenograft models of triple negative breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr GS6-06.
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Affiliation(s)
- E Powell
- MD Anderson Cancer Center; Washington University in St. Louis
| | - J Shao
- MD Anderson Cancer Center; Washington University in St. Louis
| | - HM Picon
- MD Anderson Cancer Center; Washington University in St. Louis
| | - Z Ge
- MD Anderson Cancer Center; Washington University in St. Louis
| | - GV Echeverria
- MD Anderson Cancer Center; Washington University in St. Louis
| | - M Peoples
- MD Anderson Cancer Center; Washington University in St. Louis
| | - C Bristow
- MD Anderson Cancer Center; Washington University in St. Louis
| | - S Cai
- MD Anderson Cancer Center; Washington University in St. Louis
| | - Y Tu
- MD Anderson Cancer Center; Washington University in St. Louis
| | - AM McCoy
- MD Anderson Cancer Center; Washington University in St. Louis
| | - D Piwnica-Worms
- MD Anderson Cancer Center; Washington University in St. Louis
| | - G Draetta
- MD Anderson Cancer Center; Washington University in St. Louis
| | - JR Edwards
- MD Anderson Cancer Center; Washington University in St. Louis
| | - SL Moulder
- MD Anderson Cancer Center; Washington University in St. Louis
| | - WF Symmans
- MD Anderson Cancer Center; Washington University in St. Louis
| | - TP Heffernan
- MD Anderson Cancer Center; Washington University in St. Louis
| | - H Liang
- MD Anderson Cancer Center; Washington University in St. Louis
| | - H Piwnica-Worms
- MD Anderson Cancer Center; Washington University in St. Louis
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Shimizu H, Kahl D, Yamaguchi H, Abe K, Beliuskina O, Cha SM, Chae KY, Chen AA, Ge Z, Hayakawa S, Imai N, Iwasa N, Kim A, Kim DH, Kim MJ, Kubono S, Kawag MS, Liang J, Moon JY, Nishimura S, Oka S, Park SY, Psaltis A, Teranishi T, Ueno Y, Yang L. Isomeric 26Al beam production with CRIB. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201818402013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We performed an experiment to measure proton resonant elastic scattering of a mixed 26m,gAl beam with a thick target in inverse kinematics by using CNS RI beam sep-arator, located at RIKEN Nishina Center. It aimed to search for strong proton resonances and determine level properties of low spin-parity states in 27Si. Diagnosis of the 26mAl purity of the beam by annihilation radiation are discussed.
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He F, Peng Y, Yang Z, Ge Z, Tian Y, Ma T, Li H. Activated ClC-2 Inhibits p-Akt to Repress Myelination in GDM Newborn Rats. Int J Biol Sci 2017; 13:179-188. [PMID: 28255270 PMCID: PMC5332872 DOI: 10.7150/ijbs.17716] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 11/08/2016] [Indexed: 12/15/2022] Open
Abstract
This study aims to investigate the effect and mechanism of type 2 voltage-gated chloride channel (ClC-2) on myelin development of newborn rats' cerebral white matter with gestational diabetes mellitus (GDM). In this study, GDM model was induced in late pregnant rat model. The alteration of ClC-2 expression in various developmental stages of cerebral white matter with/without being exposed to high glucose was analyzed using RT-PCR, active oxygen detection, TUNEL staining, Western Blot as well as immuno-histochemical staining. Our results showed that ClC-2 mRNA and protein expressions in GDM group were significantly increased in white matter of fetal rats after E18 stage, and elevated the level of TNF-α and iNOS in white matter at P0 and P3 stage of newborn rats. Meanwhile, In GDM group, reactive oxygen species (ROS) levels of the white matter at E18, P0, and P3 stage were significantly higher than control group. Furthermore, the expression level of myelin transcription factor Olig2 at P0 stage and CNPase at P3 stage were strikingly lower than that of the control group. In GDM group, ClC-2 expression in the corpus callosum (CC) and cingulate gyrus (CG) regains, and TUNEL positive cell number were increased at P0 and P3 stage. However, PDGFα positive cell number at P0 stage and CNPase expression at P3 stage were significantly decreased. Caspase-3 was also increased in those white matter regions in GDM group, but p-Akt expression was inhibited. While DIDS (a chloride channel blocker) can reverse these changes. In conclusion, ClC-2 and caspase-3 were induced by GDM, which resulted in apoptosis and myelination inhibition. The effect was caused by repressing PI3K-Akt signaling pathway. Application of ClC-2 inhibitor DIDS showed protective effects on cerebral white matter damage stimulated by high glucose concentration.
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Affiliation(s)
- Feixiang He
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China.; Battalion 5 of Cadet Brigade, Third Military Medical University, Chongqing, China
| | - Yuchen Peng
- Battalion 4 of Cadet Brigade, Third Military Medical University, Chongqing, China
| | - Zhi Yang
- Battalion 5 of Cadet Brigade, Third Military Medical University, Chongqing, China
| | - Zilu Ge
- Battalion 5 of Cadet Brigade, Third Military Medical University, Chongqing, China
| | - Yanping Tian
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - Teng Ma
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - Hongli Li
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
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Kahl D, Shimizu H, Yamaguchi H, Abe K, Beliuskina O, Cha SM, Chae KY, Chen AA, Ge Z, Hayakawa S, Imai N, Iwasa N, Kim A, Kim DH, Kim MJ, Kubono S, Kwag MS, Liang J, Moon JY, Nishimura S, Oka S, Park SY, Psaltis A, Teranishi T, Ueno Y, Yang L. Isomer beam elastic scattering: 26mAl(p, p) for astrophysics. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201716501030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wu Q, Diao H, Yu M, Liu Q, Ji X, Ge Z, Jin T. Signaling pathway activation changes induced by Cd exposure combined with Cx43 silencing in HK-2. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Yu J, Wei J, Duan X, Zhang Z, Tang Y, Han S, Kang W, Xiao G, Zhao J, Ge Z, Wu X, Ma Z, Xu T. MON-LB271: The Effect of a Diabetes Specific Formula in Perioperative Patients with Gastrointestinal Surgery: A Prospective, Randomized, Multi-Center Clinical Trial in China. Clin Nutr 2016. [DOI: 10.1016/s0261-5614(16)30905-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Brooks JW, Whary MT, Hattel AL, Shaw DP, Ge Z, Fox JG, Poppenga RH. Clostridium piliforme Infection in Two Farm-raised White-tailed Deer Fawns (Odocoileus virginianus) and Association with Copper Toxicosis. Vet Pathol 2016; 43:765-8. [PMID: 16966457 DOI: 10.1354/vp.43-5-765] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [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: 11/19/2022]
Abstract
Necropsy of 2 white-tailed deer fawns who died acutely revealed diarrhea and melena in case No. 1 and no gross changes in case No. 2. Histologically, the livers of both deer displayed multifocal coagulative necrosis, with infiltrations of neutrophils, macrophages, and lymphocytes. By Warthin-Starry staining, bundles of filamentous bacteria were identified within hepatocytes at the periphery of the necrotic foci in case No. 1. There was multifocal myocardiocyte necrosis in case No. 1 and multifocal lymphoid necrosis of the Peyer's patches in case No. 2. Clostridium piliforme 16S ribosomal ribonucleic acid gene was detected in both livers by polymerase chain reaction (PCR) with C. piliforme-specific primers. The liver copper levels in both cases were normal to slightly elevated. The kidney copper level in case No. 2 was elevated. This represents the first published cases of Tyzzer's disease in deer, a novel use of PCR for the diagnosis of C piliforme infection, and a possible association between copper toxicosis and Tyzzer's disease.
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Affiliation(s)
- J W Brooks
- Department of Veterinary and Biomedical Sciences, Animal Diagnostic Laboratory, The Pennsylvania State University, Orchard Road, University Park, PA 16802-1110, USA.
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Song C, Pan X, Ge Z, Gowda C, Ding Y, Li H, Li Z, Yochum G, Muschen M, Li Q, Payne KJ, Dovat S. Epigenetic regulation of gene expression by Ikaros, HDAC1 and Casein Kinase II in leukemia. Leukemia 2016; 30:1436-40. [PMID: 26639180 PMCID: PMC4889471 DOI: 10.1038/leu.2015.331] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- C Song
- Department of Pediatrics, Pennsylvania State University Medical College, Hershey, PA, USA
| | - X Pan
- Department of Pediatrics, Pennsylvania State University Medical College, Hershey, PA, USA
| | - Z Ge
- Department of Pediatrics, Pennsylvania State University Medical College, Hershey, PA, USA
- Department of Hematology, The First Affiliated Hospital of Nanjing Medical University, Jiangsu Province Hospital, Nanjing, China
| | - C Gowda
- Department of Pediatrics, Pennsylvania State University Medical College, Hershey, PA, USA
| | - Y Ding
- Department of Pediatrics, Pennsylvania State University Medical College, Hershey, PA, USA
| | - H Li
- Department of Pediatrics, Pennsylvania State University Medical College, Hershey, PA, USA
| | - Z Li
- Department of Pediatrics, Pennsylvania State University Medical College, Hershey, PA, USA
- Jilin Province Animal Embryo Engineering Key Laboratory, College of Animal Science and Veterinary Medicine, Jilin University, Changchun, China
| | - G Yochum
- Department of Biochemistry and Molecular Biology, Pennsylvania State University Medical College, Hershey, PA, USA
| | - M Muschen
- University of California San Francisco, San Francisco, CA, USA
| | - Q Li
- Department of Statistics, Pennsylvania State University, University Park, State College, PA, USA
| | - K J Payne
- Department of Pathology and Human Anatomy and Center for Health Disparities and Molecular Medicine, Loma Linda University, Loma Linda, CA, USA
| | - S Dovat
- Department of Pediatrics, Pennsylvania State University Medical College, Hershey, PA, USA
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Abstract
As a cell source, multipotent mesenchymal stromal cells or mesenchymal stem cells (MSCs) are promising candidates for chondrogenic differentiation and subsequent cartilage regeneration. From previous literature, it is known that chondrogenic differentiation of MSCs inevitably leads to hypertrophy and subsequent endochondral ossification. In this review, we examine the history of currently established protocols of chondrogenic differentiation and elaborate on the roles of individual components of chondrogenic differentiation medium. We also summarise the effects of physical, chemical and biological factors involved, and propose potential strategies to differentiate MSCs into articular chondrocytes with homogenous mature phenotypes through spatial-temporal incorporation of cell differentiation and chondrogenesis.
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Affiliation(s)
- X Tang
- Department of Biomedical Engineering, College of Engineering, Peking University, P.R China,
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Dong Y, Huang J, Li G, Li L, Li W, Li X, Liu X, Liu Z, Lu Y, Ma A, Sun H, Wang H, Wen X, Xu D, Yang J, Zhang J, Zhao H, Zhou J, Zhu L, Committee Members:, Bai L, Cao K, Chen M, Chen M, Dai G, Ding W, Dong W, Fang Q, Fang W, Fu X, Gao W, Gao R, Ge J, Ge Z, Gu F, Guo Y, Han H, Hu D, Huang W, Huang L, Huang C, Huang D, Huo Y, Jin W, Ke Y, Lei H, Li X, Li Y, Li D, Li G, Li X, Li Z, Liang Y, Liao Y, Liu G, Ma A, Ma C, Ma D, Ma Y, Shen L, Sun J, Sun C, Sun Y, Tang Q, Wan Z, Wang H, Wang J, Wang S, Wang D, Wang G, Wang J, Wu Y, Wu P, Wu S, Wu X, Wu Z, Yang J, Yang T, Yang X, Yang Y, Yang Z, Ye P, Yu B, Yuan F, Zhang S, Zhang Y, Zhang R, Zhang Y, Zhang Y, Zhao S, Zhou X. Guidelines for the prevention, diagnosis, and treatment of infective endocarditis in adults: The Task Force for the Prevention, Diagnosis, and Treatment of Infective Endocarditis in Adults of Chinese Society of Cardiology of Chinese Medical Association, and of the Editorial Board of Chinese Journal of Cardiology. Eur Heart J Suppl 2015. [DOI: 10.1093/eurheartj/suv031] [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] [Indexed: 11/13/2022]
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Ge Z, Qing Y, Zicheng S, Shiying S. Rapid and sensitive diagnosis of Acanthamoeba keratitis by loop-mediated isothermal amplification. Clin Microbiol Infect 2013; 19:1042-8. [PMID: 23413965 DOI: 10.1111/1469-0691.12149] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Revised: 12/21/2012] [Accepted: 01/02/2013] [Indexed: 11/29/2022]
Abstract
A loop-mediated isothermal amplification (LAMP) assay was developed for the detection of Acanthamoeba. The sensitivity of the LAMP assay was tested using different copies of positive DNA. The specificity of the assay was tested using DNA extracted from Acanthamoeba, Pseudomonas aeruginosa, Candida albicans, herpes simplex virus-1 and human corneal epithelial cells. Its effectiveness was evaluated and compared with culture, corneal smear examination and real-time PCR in corneal samples from mice with Acanthamoeba keratitis. We also tested three corneal samples from patients with suspected Acanthamoeba or fungal infection using LAMP. Loop-mediated isothermal amplification was confirmed to be very sensitive, with the lowest detection limit being ten copies/tube of Acanthamoeba DNA. The LAMP primers only amplified Acanthamoeba DNA. During the development of Acanthamoeba keratitis in mice, almost all of the positive rates of LAMP at each time post-infection were higher than those of culture or corneal smear examination. The total positive rate of LAMP was significantly higher than those of culture and corneal smear examination (p <0.05), whereas the sensitivities of LAMP and real-time PCR were comparable. However, the trends of positive change in these different test methods were generally similar. Of the three clinical corneal specimens, two with suspected Acanthamoeba keratitis tested positive for Acanthamoeba using LAMP along with culture or corneal smear examination, whereas the other suspected fungal keratitis tested negative. The LAMP assay is a simple, rapid, highly specific and sensitive method for the diagnosis of keratitis caused by Acanthamoeba.
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Affiliation(s)
- Z Ge
- Shandong Provincial Key Laboratory of Ophthalmology, Shandong Provincial Excellent Innovation Team Programme, Shandong Eye Institute, Shandong Academy of Medical Sciences, Qingdao, 266071, China
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Abstract
Helicobacter pylori is an important etiological pathogen of human stomach diseases, such as gastritis, peptic ulcer, and gastric carcinoma (1). In the past few years, great progress has been made in the cloning and characterization of H. pylori genes. Success of these studies stems in part from the finding that chromosomal and recombinant plasmid DNA are able to be efficiently transformed into H. pylori cells by natural competence (2-4) and electroporation (3,5). Such techniques allow the transfer of cloned H. pylori genes, manipulated in vitro, which can then shed light on the structural and functional relationships of the genes of interest. In this chapter, we describe the protocols for the isolation of H. pylori chromosomal and plasmid DNA, natural transformation, and electroporation.
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Affiliation(s)
- Z Ge
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, Alberta, Canada
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Abstract
Objectives: To evaluate markers of infection and identify risk factors for the development of pneumonia following acute ischaemic stroke in patients with diabetes mellitus. Methods: Patients with diabetes mellitus ( n = 106) who were hospitalized after acute ischaemic stroke with ( n = 32) or without ( n = 74) pneumonia at admission were included in the study. Levels of C-reactive protein (CRP) and interleukin-6 (IL-6), white blood cell (WBC) count, mean body temperature and severity of stroke on the National Institutes of Health Stroke Scale were measured at the time of admission. The degree of disability according to the modified Rankin Scale was assessed after 30 days. Results: Raised levels of IL-6 and CRP, older age, more severe stroke, longer duration of hospitalization and dysphagia were significantly associated with the development of pneumonia. Patients with pneumonia had significantly worse outcomes compared with nonpneumonia patients after 1 month. Raised WBC count and mean body temperature were not significant predictors of pneumonia. Conclusions: Markers of infection, more severe ischaemic stroke, dysphagia and older age may help in predicting the occurrence of pneumonia at stroke onset.
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Affiliation(s)
- X Zhang
- Department of Neurology, Gansu Province People's Hospital, Lanzhou, Gansu, China
| | - F Wang
- Clinical Laboratory, Gansu Province People's Hospital, Lanzhou, Gansu, China
| | - Y Zhang
- Department of Neurosurgery, First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Z Ge
- Department of Neurology, Second Hospital of Lanzhou University, Lanzhou, Gansu, China
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Ge Z, Yang Q, Xiang X, Liu KZ. Assessment of silk fibroin for the repair of buccal mucosa in a rat model. Int J Oral Maxillofac Surg 2012; 41:673-80. [DOI: 10.1016/j.ijom.2011.11.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 11/10/2011] [Accepted: 11/14/2011] [Indexed: 10/14/2022]
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Ge Z, Goh JCH, Wang L, Tan EPS, Lee EH. Characterization of knitted polymeric scaffolds for potential use in ligament tissue engineering. Journal of Biomaterials Science, Polymer Edition 2012; 16:1179-92. [PMID: 16231607 DOI: 10.1163/1568562054798491] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Different scaffolds have been designed for ligament tissue engineering. Knitted scaffolds of poly-L-lactic acid (PLLA) yarns and co-polymeric yarns of PLLA and poly(glycolic acid) (PLGA) were characterized in the current study. The knitted scaffolds were immersed in medium for 20 weeks, before mass loss, molecular weight, pH value change in medium were tested; changes in mechanical properties were evaluated at different time points. Results showed that the knitted scaffolds had 44% porosity. There was no significant pH value change during degradation, while there was obvious mass loss at initial 4 week, as well as smooth molecular weight drop of PLLA. PLGA degraded more quickly, while PLLA kept its integrity for at least 20 weeks. Young's modulus increased while tensile strength and strain at break decreased with degradation time; however, all of them could maintain the basic requirements for ACL reconstruction. It showed that the knitted polymeric structures could serve as potential scaffolds for tissue-engineered ligaments.
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Affiliation(s)
- Z Ge
- Department of Orthopaedic Surgery, National University of Singapore, Republic of Singapore
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Fox JG, Ge Z, Whary MT, Erdman SE, Horwitz BH. Helicobacter hepaticus infection in mice: models for understanding lower bowel inflammation and cancer. Mucosal Immunol 2011; 4:22-30. [PMID: 20944559 PMCID: PMC3939708 DOI: 10.1038/mi.2010.61] [Citation(s) in RCA: 139] [Impact Index Per Article: 10.7] [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: 02/07/2023]
Abstract
Pioneering work in the 1990s first linked a novel microaerobic bacterium, Helicobacter hepaticus, with chronic active hepatitis and inflammatory bowel disease in several murine models. Targeted H. hepaticus infection experiments subsequently demonstrated its ability to induce colitis, colorectal cancer, and extraintestinal diseases in a number of mouse strains with defects in immune function and/or regulation. H. hepaticus is now widely utilized as a model system to dissect how intestinal microbiota interact with the host to produce both inflammatory and tolerogenic responses. This model has been used to make important advances in understanding factors that regulate both acquired and innate immune response within the intestine. Further, it has been an effective tool to help define the function of regulatory T cells, including their ability to directly inhibit the innate inflammatory response to gut microbiota. The complete genomic sequence of H. hepaticus has advanced the identification of several virulence factors and aided in the elucidation of H. hepaticus pathogenesis. Delineating targets of H. hepaticus virulence factors could facilitate novel approaches to treating microbially induced lower bowel inflammatory diseases.
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Affiliation(s)
- JG Fox
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA,Corresponding author. Mailing address: Division of Comparative Medicine, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Building 16-825, Cambridge, MA 02139. Phone (617) 253-1735. Fax: (617) 258-5708.
| | - Z Ge
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA
| | - MT Whary
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA
| | - SE Erdman
- Division of Comparative Medicine, Massachusetts Institute of Technology, Cambridge, MA
| | - BH Horwitz
- Department of Pathology, Brigham and Women’s Hospital, Boston, MA
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Wang L, Shan D, Chan S, Chen H, Ge Z, Ding G, Zhang L, Duan S, Liu W, Liu Z, Yang J, Chen Y, Chen X, Wang N. Disclosure of HIV-positive serostatus to sexual partners and associated factors in southern China. Int J STD AIDS 2010; 21:685-90. [DOI: 10.1258/ijsa.2010.010040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In light of an increased push for disclosure of HIV-positive serostatus to sexual partners (partner disclosure, PD) in China as reflected by national and local policies, the objective of this study was to determine the proportion and evaluate associated factors of PD among people living with HIV/AIDS (PLWHA) in HIV/AIDS high-risk areas in southern China. Of the 946 HIV-positive individuals, the proportion of those who disclosed positive serostatus results to their sexual partners was 90.2% (625/693). Variables independently associated with non-disclosure included testing in Guangxi province (adjusted relative ratio [ARR] = 0.33), becoming infected with HIV via injecting drug use (IDU) transmission (ARR = 0.32), having not reported discussing disclosure with health department staff during post-test counselling (ARR = 0.41) and having a sexual relationship of ≤2 years' duration (ARR = 0.31). This study also identified a relatively larger differential between the proportion of disclosure to regular partners and the proportion of disclosure to casual partners (94.8% versus 13.0%) in comparison with other studies. Findings from this study may aid policies for future consideration.
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Affiliation(s)
- L Wang
- National Center for AIDS/STD Control & Prevention, Chinese Center for Disease Control & Prevention, Xuanwu District
| | - D Shan
- National Center for AIDS/STD Control & Prevention, Chinese Center for Disease Control & Prevention, Xuanwu District
| | - S Chan
- National Center for AIDS/STD Control & Prevention, Chinese Center for Disease Control & Prevention, Xuanwu District
| | - H Chen
- National Center for AIDS/STD Control & Prevention, Chinese Center for Disease Control & Prevention, Xuanwu District
| | - Z Ge
- National Center for AIDS/STD Control & Prevention, Chinese Center for Disease Control & Prevention, Xuanwu District
| | - G Ding
- National Center for AIDS/STD Control & Prevention, Chinese Center for Disease Control & Prevention, Xuanwu District
| | - L Zhang
- Chaoyang District Center for Disease Control & Prevention, Beijing
| | - S Duan
- Dehong prefecture Center for Disease Control & Prevention, Yunnan Province
| | - W Liu
- Guangxi Province Center for Disease Control & Prevention, Guangxi Province
| | - Z Liu
- Luxi County Center for Disease Control & Prevention
| | - J Yang
- Yingjiang County Center for Disease Control & Prevention, Yunnan Province
| | - Y Chen
- Hezhou County Center for Disease Control & Prevention, Guangxi Province
| | - X Chen
- Luzhai County Center for Disease Control & Prevention, Yunnan Province, China
| | - N Wang
- National Center for AIDS/STD Control & Prevention, Chinese Center for Disease Control & Prevention, Xuanwu District
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