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Li Y, Hu D, Sun J, Zhang W, Jiang A. Ferroelectric Domain Wall Delayer and Low-Dropout Regulator. ACS Appl Mater Interfaces 2024; 16:19691-19698. [PMID: 38563689 DOI: 10.1021/acsami.3c18979] [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: 04/04/2024]
Abstract
A switching-type power converter providing an accurate and stable switching output voltage against line/load variations and power supply ripple is mostly complicated in system-on-chip power management integrated circuits (PMICs) within a limited occupation area. Here we fabricated domain wall (DW) nanodevices using an X-cut LiNbO3 thin film on silicon. The domain switching event occurs after a delay time predicted by Merz's law under the applied voltage. But the output current is irrespective of the applied voltage and can be adjusted by conducting wall width as well as input resistance in the circuit. The regulating currents appear repetitively across the volatile interfacial domains between the nanodevice and electrode under intermittently applied voltages. A wall-current-limited domain switching model is developed to explain the phenomenon. The multifunctional DW nanodevices with smaller occupation areas can serve as compact low-dropout regulators in PMICs, time-domain delayers in energy-efficient neural network systems, and on-chip electrostatic discharge protection besides nonvolatile memories and selectors.
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Affiliation(s)
- Yiming Li
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Di Hu
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Jie Sun
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Wendi Zhang
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Anquan Jiang
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
- Shanghai Frontiers Science Research Base of Intelligent Optoelectronics and Perception, Institute of Optoelectronics, Fudan University, Shanghai 200433, China
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2
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Jiang A, Perry T, Walker K, Burfoot A, Patterson L. Surgical sensation during caesarean section: a qualitative analysis. Int J Obstet Anesth 2024; 57:103935. [PMID: 37925355 DOI: 10.1016/j.ijoa.2023.103935] [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] [Received: 11/24/2022] [Revised: 08/13/2023] [Accepted: 10/02/2023] [Indexed: 11/06/2023]
Abstract
BACKGROUND Caesarean section (CS) is a major abdominal surgery performed usually on a young and healthy population under neuraxial anesthesia with little to no sedation. This creates a distinct surgical experience whereby patients are aware of the surgical process, physical sensations, and their environment. This study aimed to provide an in-depth descriptive assessment of subjective surgical experience during CS under regional anaesthesia. We expected the information gained would enhance our current understanding and better alleviate patient anxiety through informed counselling. METHODS This qualitative descriptive study was conducted at a Canadian academic centre. Twenty patients participated in semi-structured interviews within a week of CS, using an interview guide developed for this study. Patient medical records were reviewed to collect demographic and surgical information. Thematic analysis was conducted using an inductive approach to determine common themes. RESULTS Nine themes were identified. Five themes were identified in the category of surgical sensation and four themes were identified in the category of peri-operative education. CONCLUSIONS Patients commonly experienced pressure and movement sensations at varying intensity, and most did not experience pain. Environmental factors, including sounds and distraction by the newborn, affected perception of surgical sensation. Patients wish to receive pre-operative counselling regarding potential surgical sensations, as well as ongoing communication from their anaesthesiologist. These results can be used to guide informed discussions with patients and direct further investigation in this area.
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Affiliation(s)
- A Jiang
- Department of Anesthesiology and Perioperative Medicine, Kingston Health Sciences Centre, Kingston, Ontario, Canada.
| | - T Perry
- Department of Anesthesiology and Perioperative Medicine, Kingston Health Sciences Centre, Kingston, Ontario, Canada
| | - K Walker
- Department of Sociology, Queen's University, Kingston, Ontario, Canada
| | - A Burfoot
- Department of Sociology, Queen's University, Kingston, Ontario, Canada
| | - L Patterson
- Department of Anesthesiology and Perioperative Medicine, Kingston Health Sciences Centre, Kingston, Ontario, Canada
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3
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Feng G, Zhu Q, Liu X, Chen L, Zhao X, Liu J, Xiong S, Shan K, Yang Z, Bao Q, Yue F, Peng H, Huang R, Tang X, Jiang J, Tang W, Guo X, Wang J, Jiang A, Dkhil B, Tian B, Chu J, Duan C. A ferroelectric fin diode for robust non-volatile memory. Nat Commun 2024; 15:513. [PMID: 38218871 PMCID: PMC10787831 DOI: 10.1038/s41467-024-44759-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 12/29/2023] [Indexed: 01/15/2024] Open
Abstract
Among today's nonvolatile memories, ferroelectric-based capacitors, tunnel junctions and field-effect transistors (FET) are already industrially integrated and/or intensively investigated to improve their performances. Concurrently, because of the tremendous development of artificial intelligence and big-data issues, there is an urgent need to realize high-density crossbar arrays, a prerequisite for the future of memories and emerging computing algorithms. Here, a two-terminal ferroelectric fin diode (FFD) in which a ferroelectric capacitor and a fin-like semiconductor channel are combined to share both top and bottom electrodes is designed. Such a device not only shows both digital and analog memory functionalities but is also robust and universal as it works using two very different ferroelectric materials. When compared to all current nonvolatile memories, it cumulatively demonstrates an endurance up to 1010 cycles, an ON/OFF ratio of ~102, a feature size of 30 nm, an operating energy of ~20 fJ and an operation speed of 100 ns. Beyond these superior performances, the simple two-terminal structure and their self-rectifying ratio of ~ 104 permit to consider them as new electronic building blocks for designing passive crossbar arrays which are crucial for the future in-memory computing.
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Affiliation(s)
- Guangdi Feng
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
- Zhejiang Lab, Hangzhou, 310000, China
| | - Qiuxiang Zhu
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
- Zhejiang Lab, Hangzhou, 310000, China
| | - Xuefeng Liu
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Luqiu Chen
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Xiaoming Zhao
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Jianquan Liu
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Shaobing Xiong
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
- Institute of Optoelectronics, Fudan University, Shanghai, 200433, China
| | - Kexiang Shan
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, 410083, China
| | - Zhenzhong Yang
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Qinye Bao
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Fangyu Yue
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Hui Peng
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Rong Huang
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Xiaodong Tang
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
| | - Jie Jiang
- Hunan Key Laboratory of Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, 410083, China
| | - Wei Tang
- National Engineering Laboratory of TFT-LCD Materials and Technologies, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Xiaojun Guo
- National Engineering Laboratory of TFT-LCD Materials and Technologies, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Jianlu Wang
- Frontier Institute of Chip and System, Fudan University, Shanghai, 200433, China
| | - Anquan Jiang
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai, 200433, China
| | - Brahim Dkhil
- Université Paris-Saclay, CentraleSupélec, CNRS-UMR8580, Laboratoire SPMS, 91190, Gif-sur-Yvette, France
| | - Bobo Tian
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China.
- Zhejiang Lab, Hangzhou, 310000, China.
| | - Junhao Chu
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
- Institute of Optoelectronics, Fudan University, Shanghai, 200433, China
| | - Chungang Duan
- Key Laboratory of Polar Materials and Devices, Ministry of Education, Shanghai Center of Brain-inspired Intelligent Materials and Devices, Department of Electronics, East China Normal University, Shanghai, 200241, China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi, 030006, China
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Shen B, Tan X, Wang C, Fan H, Hu D, Sun J, Jiang J, Jiang A. Hybrid Dry and Wet Etching of LiNbO 3 Domain-Wall Memory Devices with 90° Etching Angles and Excellent Electrical Properties. ACS Appl Mater Interfaces 2023. [PMID: 37883090 DOI: 10.1021/acsami.3c11445] [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: 10/27/2023]
Abstract
Ferroelectric domain walls, agile nanoscale interfaces of polar order, can be selectively controlled by electric fields for their position, conformation, and function, which is ultimately the key to realizing novel low-energy memory and computing structures. LiNbO3 single-crystal domain wall memory has the advantages of high operational speed, high integration density, and virtually unlimited endurance cycles, appearing as a good solution for the next generation of highly miniaturized low-energy memories. However, the etching process poses significant challenges in the nanofabrication and high-density integration of LiNbO3 domain-wall memories. Here, we employed a hybrid etching technique to achieve smooth sidewalls with a 90° inclined angle, leading to a 24% reduction in the coercive field and a 2.5-fold increase in the linear domain wall current density with a retention time of more than 106 seconds and endurance of over 105 writing cycles. Combined with the results of X-ray diffraction patterns and X-ray photoelectric spectra, it is concluded that the excellent electrical performance is related to the formation of an oxygen-deficient LiNbO3-x layer on the sidewall surface during the wet chemical etching process, which is a conductive layer that reduces the thickness of the "dead" layer between the side electrodes and the LiNbO3 cell and rectifies the diode-like wall currents with an onset voltage reduced from 1.23 to 0.28 V. These results prove the high-density integration of ferroelectric domain-wall memories at the nanoscale and provide a new strategy applicable to the development of LiNbO3 photonic devices.
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Affiliation(s)
- Bowen Shen
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Xiaojun Tan
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Chao Wang
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Haochen Fan
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Di Hu
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Jie Sun
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Jun Jiang
- School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Anquan Jiang
- School of Microelectronics, Fudan University, Shanghai 200433, China
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Shen B, Hu D, Dai C, Yu X, Tan X, Sun J, Jiang J, Jiang A. Advanced Etching Techniques of LiNbO 3 Nanodevices. Nanomaterials (Basel) 2023; 13:2789. [PMID: 37887940 PMCID: PMC10609314 DOI: 10.3390/nano13202789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/29/2023] [Accepted: 10/03/2023] [Indexed: 10/28/2023]
Abstract
Single LiNbO3 (LNO) crystals are widely utilized in surface acoustic wave devices, optoelectronic devices, and novel ferroelectric memory devices due to their remarkable electro-optic and piezoelectric properties, and high saturation and remnant polarizations. However, challenges remain regarding their nanofabrication that hinder their applications. The prevailing etching techniques for LNO encompass dry etching, wet etching, and focused-ion-beam etching, each having distinct merits and demerits. Achieving higher etching rates and improved sidewall angles presents a challenge in LNO nanofabrication. Building upon the current etching researches, this study explores various etching methods using instruments capable of generating diverse plasma densities, such as dry etching in reactive ion etching (RIE) and inductively coupled plasma (ICP), proton exchange-enhanced etching, and wet chemical etching following high-temperature reduction treatment, as well as hybrid dry and wet etching. Ultimately, after employing RIE dry etching combined with wet etching, following a high-temperature reduction treatment, an etching rate of 10 nm/min and pretty 90° sidewall angles were achieved. Furthermore, high etching rates of 79 nm/min with steep sidewall angles of 83° were obtained using ICP dry etching. Additionally, using SiO2 masks, a high etching rate of 108 nm/min and an etching selectivity ratio of 0.86:1 were achieved. Distinct etching conditions yielded diverse yet exceptional results, providing multiple processing paths of etching for the versatile application of LNO.
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Affiliation(s)
| | | | | | | | | | | | - Jun Jiang
- School of Microelectronics, Fudan University, Shanghai 200433, China; (B.S.); (D.H.); (C.D.); (X.Y.); (X.T.); (J.S.)
| | - Anquan Jiang
- School of Microelectronics, Fudan University, Shanghai 200433, China; (B.S.); (D.H.); (C.D.); (X.Y.); (X.T.); (J.S.)
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Donington J, Hu X, Zhang S, Song Y, Gao C, Arunachalam A, Chirovsky D, Lerner A, Jiang A, Signorovitch J, Samkari A. 95P Neoadjuvant treatment pattern and association between real-world event-free survival (rwEFS) and overall survival (OS) in patients (pts) with resected early-stage non-small cell lung cancer (eNSCLC). J Thorac Oncol 2023. [DOI: 10.1016/s1556-0864(23)00350-7] [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: 04/03/2023]
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Sun J, Li Y, Zhang B, Jiang A. High-Power LiNbO 3 Domain-Wall Nanodevices. ACS Appl Mater Interfaces 2023; 15:8691-8698. [PMID: 36724474 DOI: 10.1021/acsami.2c20579] [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: 06/18/2023]
Abstract
Wide band gap semiconductors keep on pushing the limits of power electronic devices to higher switching speeds and higher operating temperatures, including diodes and transistors on low-cost Si substrates. Alternatively, erasable conducting walls created within ferroelectric single-crystal films integrated on the Si platform have emerged as a promising gateway to adaptive nanoelectronics in sufficient output power, where the repetitive creation of highly charged domain walls (DWs) is particularly important to increase the wall current density. Here, we observe large conduction of the head-to-head DW at an optimized inclination angle of 15° within a LiNbO3 single crystal that is 3-4 orders of magnitude higher than that of the tail-to-tail DW. The wall conduction is diode-like with a linear current density of higher than 1 mA/μm and an on/off ratio of larger than 106 under the application of a repetitive switching voltage pulse in time less than 10 ns and an endurance number of higher than 105. The high-power diodes can not only perform direct data processing in high-density nonvolatile DW memories in fast operation speeds and low-energy consumption but also function as sensors in compact electromechanical systems, selectors in phase-change memory and resistive random-access memory, and half-wave/full-wave rectifiers in modern nanocircuits in dimensions approaching the thickness of the depletion layer below which the tradition p-n junction malfunctions.
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Affiliation(s)
- Jie Sun
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai200433, China
| | - Yiming Li
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai200433, China
| | - Boyang Zhang
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai200433, China
| | - Anquan Jiang
- State Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai200433, China
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8
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Jiang A, Xu P, Yang Z, Zhao Z, Tan Q, Li W, Song C, Dai H, Leng H. Increased Sparc release from subchondral osteoblasts promotes articular chondrocyte degeneration under estrogen withdrawal. Osteoarthritis Cartilage 2023; 31:26-38. [PMID: 36241137 DOI: 10.1016/j.joca.2022.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 07/08/2022] [Accepted: 08/04/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The incidence of osteoarthritis (OA) in menopausal women is significantly higher than in same-aged men. Investigating the role of subchondral osteoblasts in estrogen deficiency-induced OA may help elucidate the pathological mechanism, providing new insights for the diagnosis and treatment of menopausal OA. METHODS A classical ovariectomy-induced OA (OVX-OA) rat model was utilized to isolate primary articular chondrocytes and subchondral osteoblasts, which were identified and then cocultured in Transwell. The expression of chondrocyte anabolic and catabolic indicators was evaluated. The differentially expressed proteins in the conditioned medium (CM) of osteoblasts were identified by Liquid Chromatograph-Mass Spectrometer (LC-MS/MS). Normal chondrocytes were treated with osteoblast CM, and then RNA sequencing was performed on the treated chondrocytes. KEGG was used to identify significant enrichment of signaling pathways, and Simple Western was used to verify the expression of related proteins in the signaling pathways. RESULTS Coculture of OVX-OA subchondral osteoblasts with chondrocytes significantly downregulated the expression of the anabolic indicators and upregulated the expression of the catabolic indicators in chondrocytes. 1,601 proteins were identified in both normal and OVX osteoblast culture supernatants. Protein-protein interaction network analysis revealed that Sparc was one of the hub proteins. The AMPK/Foxo3a signaling pathway of chondrocytes was downregulated by OVX-OA osteoblasts CM. AICAR, the AMPK agonist, partially reversed the catabolic effect of OVX-OA osteoblasts on chondrocytes. CONCLUSIONS Sparc secreted by OVX-OA subchondral osteoblasts can downregulate the AMPK/Foxo3a signaling pathway of chondrocytes, thereby promoting chondrocyte degeneration.
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Affiliation(s)
- A Jiang
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China; Department of General Surgery, Beijing Pinggu Hospital, Beijing 101299, China
| | - P Xu
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z Yang
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - Z Zhao
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - Q Tan
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - W Li
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China; Engineering Research Center of Bone and Joint Precision Medicine, Beijing 100191, China
| | - C Song
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China; Beijing Key Lab of Spine Diseases, Beijing 100191, China
| | - H Dai
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing 100191, China
| | - H Leng
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China.
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Cicala C, Vimopatranon S, Goes L, Jiang A, Huang C, Huang D, Yolitz J, Wei D, Virtaneva K, Martens C, Soares M, Fauci A, Arthos J. PP 4.13 – 00151 Soluble Factors Drive Naïve CD4+ T Cells to Differentiate into CCR5 + Tissue Resident Memory Cells that are Highly Susceptible to HIV infection. J Virus Erad 2022. [DOI: 10.1016/j.jve.2022.100221] [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: 12/24/2022] Open
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Gutkin P, Skinner L, Jiang A, Donaldson S, Loo B, Oh J, Von Eyben R, Bredfeldt J, Breneman J, Constine L, Faught A, Haas-Kogan D, Holmes J, Krasin M, Larkin C, Marcus K, Maxim P, Murphy B, Palmer J, Perkins S, Terezakis S, Bush K, Hiniker S. A 10-Center Prospective Clinical Trial of the Audio-Visual Assisted Therapeutic Ambience in Radiotherapy (AVATAR) System for Anesthesia Avoidance in Pediatric Patients. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.463] [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: 10/31/2022]
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Hui C, Marquez C, Simiele E, Blomain E, Oh J, Bertaina A, Klein O, Shyr D, Jiang A, Hoppe R, Kovalchuk N, Hiniker S. Volumetric Modulated Arc Therapy Total Body Irradiation (VMAT-TBI) in Pediatric and Adolescent/Young Adult Patients Undergoing Stem Cell Transplantation: Early Outcomes and Toxicities. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.570] [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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Robertson MB, Li A, Yuan Y, Jiang A, Gjerde H, Staples JA, Brubacher JR. Correlation between oral fluid and blood THC concentration: A systematic review and discussion of policy implications. Accid Anal Prev 2022; 173:106694. [PMID: 35640367 DOI: 10.1016/j.aap.2022.106694] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 12/29/2021] [Revised: 03/25/2022] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
Cannabis is the second most commonly used impairing substance by drivers, after alcohol. As more countries legalize cannabis, there is concern that cannabis-impaired driving will increase. In many countries, police use roadside devices to test for oral fluid THC (the primary psychotropic component in cannabis) to identify drivers who used cannabis; including in countries with non-zero per se limits for THC in blood. This practice is questioned as previous research demonstrates a poor correlation between oral fluid and blood THC concentrations at the individual level. We conducted a meta-analysis to identify all research that compared oral fluid with blood THC levels. We obtained individual-level data from study authors and analyzed pooled individual-level data to calculate sensitivity and specificity of oral fluid THC (at various cut-off values) to detect blood THC above different concentration limits. Finally, we explored practical implications of using oral fluid THC in an enforcement context. Our review found THC concentrations measured in over 18,000 paired samples of oral fluid and blood. We found a good correlation between the presence of THC in oral fluid and presence of THC in blood (sensitivity = 71.2%, specificity = 97.7%). However oral fluid THC, at commonly used cut-off values, is less sensitive and less specific when used as a biomarker to detect people with blood THC concentrations above commonly used per se limits (such as 5 ng/mL). As such, there will be a large number of "false positive" tests if oral fluid THC testing were used as a biomarker for "illegal" THC concentrations in randomly selected drivers. We argue that the adverse implications of false positive oral fluid THC tests in this context outweigh the possible road safety benefits and we recommend against oral fluid THC screening in randomly selected drivers in countries with non-zero per se limits for blood THC. In contrast, oral fluid THC tests appear to be useful for investigating "high-risk" drivers who come to police attention because of evidence of impairment.
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Affiliation(s)
| | - A Li
- University of Ottawa, Canada
| | - Y Yuan
- University of British Columbia, Canada
| | - A Jiang
- University of British Columbia, Canada
| | - H Gjerde
- Oslo University Hospital, Norway
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Gehmlich K, Jiang A, Wadmore K, Hooper C, Douglas G, Ehler E, Broadway-Stringer S, Kalisch-Smith J, Sparrow D, Gautel M, Davies B, Watkins H. Crucial functions of alpha-actinin 2 in the embryonic heart. Cardiovasc Res 2022. [DOI: 10.1093/cvr/cvac066.137] [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
Funding Acknowledgements
Type of funding sources: Foundation. Main funding source(s): Wellcome Trust; British Heart Foundation
Background/Introduction
Alpha-actinin is an integral protein of the Z-discs in heart and skeletal muscle cells, with important structural and signalling functions. Missense variants in alpha-actinin can cause inherited conditions, e.g. myopathies and cardiomyopathies. The underlying disease mechanisms are still unknown.
Purpose
In order to study the disease mechanisms of an alpha-actinin missense variant, which is known to cause Hypertrophic Cardiomyopathy in human patients, a mouse model was generated.
Methods
Mice carrying the alpha-actinin missense variant were generated by CRISPR-Cas9 genome editing. The heterozygous adult mice carrying the alpha-actinin variant were characterised by echocardiography and quantitative PCR. Hearts of homozygous embryos were analysed at E15.5 by high-resolution episcopic microscopy (HREM).
Results
Mice carrying a single copy of the missense variant were viable and had normal appearance. Adult heterozygous mice showed no signs of cardiomyopathy on echocardiography. However, mature male mice displayed molecular signs of cardiomyopathy, such as induction of the fetal gene programme at transcript level.
The attempt to generate adult mice homozygous for the variant failed: 9 breeding pairs produced 18 litters with 83 weaned pups, but no homozygous offspring. Embryonic lethality was confirmed and E15.5 was the latest stage homozygous pups were reliably found to be viable. At this timepoint, genotype distribution was within the expected Mendelian ratios.
HREM of the hearts at this stage revealed increased right ventricular chamber size and decreased left atrial size, when compared to wildtype littermates. Membranous ventricular septal defects were observed in 3 out of 8 homozygous hearts. Further these embryos displayed aortic stenosis and dysplasic leaflets of the pulmonary valve.
Conclusions
Heterozygous adult mice only displayed sub-clinical signs of disease. In contrast, the missense variant is embryonic lethal in the homozygous setting and leads to a range of morphological abnormalities in E15.5 hearts. Future work will identify how altered functions of alpha-actinin cause these changes.
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Affiliation(s)
- K Gehmlich
- Institute of Cardiovascular Sciences , Birmingham , United Kingdom of Great Britain & Northern Ireland
| | - A Jiang
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - K Wadmore
- Institute of Cardiovascular Sciences , Birmingham , United Kingdom of Great Britain & Northern Ireland
| | - C Hooper
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - G Douglas
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - E Ehler
- King's College London , London , United Kingdom of Great Britain & Northern Ireland
| | - S Broadway-Stringer
- Institute of Cardiovascular Sciences , Birmingham , United Kingdom of Great Britain & Northern Ireland
| | - J Kalisch-Smith
- University of Oxford, Department of Physiology, Anatomy and Genetics , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - D Sparrow
- University of Oxford, Department of Physiology, Anatomy and Genetics , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - M Gautel
- King's College London , London , United Kingdom of Great Britain & Northern Ireland
| | - B Davies
- University of Oxford, Wellcome Centre for Human Genetics , Oxford , United Kingdom of Great Britain & Northern Ireland
| | - H Watkins
- University of Oxford, Cardiovascular Medicine , Oxford , United Kingdom of Great Britain & Northern Ireland
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14
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Zhang J, Long K, Wang J, Zhang J, Jin L, Tang Q, Li X, Ma J, Li M, Jiang A. Yak miR-2285o-3p attenuates hypoxia-induced apoptosis by targeting caspase-3. Anim Genet 2021; 53:49-57. [PMID: 34807998 PMCID: PMC9298924 DOI: 10.1111/age.13153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/14/2021] [Accepted: 10/19/2021] [Indexed: 12/01/2022]
Abstract
miRNAs are a class of hairpin‐derived RNAs, 21–24 nucleotides in length, which are involved in a range of biological processes. The bta‐miR‐2285 family has over 40 members spanning the entire bovine genome. We previously found that bta‐miR‐2285o‐3p was highly expressed in yak heart and lung when compared with cattle, which prompted us to investigate its potential function in high‐altitude adaptation of yaks. In this study, we detected wide‐spread high expression of bta‐miR‐2285o‐3p in yak tissues. Further experiments revealed that the protein tyrosine phosphatase receptor type M (PTPRM) gene was the host gene of bta‐miR‐2285o‐3p and that two linked SNPs in bta‐mir‐2285o precursor affected the biogenesis of mature miRNA (bta‐miR‐2285o‐3p). Functional analysis in vitro indicated that bta‐miR‐2285o‐3p attenuated hypoxia‐induced apoptosis by targeting very low‐density lipoprotein receptor (VLDLR), phosphatase and tensin homolog (PTEN) and caspase‐3. Expression level analysis in vivo revealed the high negative Pearson’s correlation between bta‐miR‐2285o‐3p and caspase3 in yak, highlighting the potential important roles of bta‐miR‐2285o‐3p in yak high‐altitude adaptation. Our study provides a typical model for deciphering the function of miRNAs in environmental adaptation.
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Affiliation(s)
- J Zhang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - K Long
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - J Wang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - J Zhang
- Chongqing Academy of Animal Science, Rongchang, Chongqing, 402460, China
| | - L Jin
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Q Tang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - X Li
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - J Ma
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - M Li
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
| | - A Jiang
- Institute of Animal Genetics and Breeding, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, 611130, China
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15
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Mcgeorge S, Jiang A, Nattakorn D, Pattison D, Thomas P, Yaxley J, Roberts M. Intra-individual comparison of prostate specific membrane antigen and fluorodeoxyglucose positron emission tomography uptake patterns in men with prostate cancer. EUR UROL SUPPL 2021. [DOI: 10.1016/s2666-1683(21)02732-4] [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: 11/27/2022] Open
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16
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Blomain E, Jiang A, Donaldson S, Agarwal R, Bertaina A, Shyr D, Shin D, Hoppe R, Hiniker S. Impact of Testicular Boost on Oncologic Outcomes and Late Effects in Pediatric Patients With Leukemia Receiving Fractionated Total Body Irradiation (TBI): A Single-Institution Experience. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.667] [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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17
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Chahal M, Jiang A, Hayden A, Savage K, Villa D, Scott D, Gerrie A, Lo A, Chan M, Pickles T, Connors J, Sehn L, Freeman C. OUTCOMES AFTER INITIAL REFUSAL OF CURATIVE TREATMENT IN PATIENTS WITH HODGKIN LYMPHOMA IN BRITISH COLUMBIA. Hematol Oncol 2021. [DOI: 10.1002/hon.112_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- M. Chahal
- BC Cancer, Medical Oncology Vancouver Canada
| | - A. Jiang
- British Columbia Cancer Research Centre Biostatistics Vancouver Canada
| | - A. Hayden
- BC Cancer Medical Oncology Surrey Canada
| | - K. Savage
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - D. Villa
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - D. Scott
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - A. Gerrie
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - A. Lo
- BC Cancer Division of Radiation Oncology Vancouver Canada
| | - M. Chan
- BC Cancer Division of Radiation Oncology Vancouver Canada
| | - T. Pickles
- BC Cancer Division of Radiation Oncology Vancouver Canada
| | - J. Connors
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - L. Sehn
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
| | - C. Freeman
- BC Cancer Centre for Lymphoid Cancer and Division of Medical Oncology Vancouver Canada
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18
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Villa D, Jiang A, Crosbie N, Rule S, McCulloch R, Visco C, Buege MJ, Kumar A, Bond D, Paludo J, Maurer MJ, Thanarajasingam G, Baech J, El‐Galaly T, Kugathasan L, Gerrie AS, Lewis D. TIME TO SECOND LINE BRUTON TYROSINE KINASE THERAPY AND AGE AT ITS INITIATION ARE STRONGLY ASSOCIATED WITH SUBSEQUENT OVERALL SURVIVAL IN PATIENTS WITH FIRST RELAPSE OF MANTLE CELL LYMPHOMA. Hematol Oncol 2021. [DOI: 10.1002/hon.59_2880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- D. Villa
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - A. Jiang
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - N. Crosbie
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
| | - S. Rule
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
| | - R. McCulloch
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
| | - C. Visco
- University of Verona Hematology Verona Italy
| | - M. J. Buege
- Memorial Sloan Kettering Cancer Center Clinical Pharmacy, Lymphoma New York USA
| | - A. Kumar
- Memorial Sloan Kettering Cancer Center Division of Hematologic Malignancies New York USA
| | - D. Bond
- The Ohio State University Hematology Columbus USA
| | - J. Paludo
- Mayo Clinic Hematology Rochester USA
| | - M. J. Maurer
- Mayo Clinic Division of Clinical Trials and Biostatistics Rochester USA
| | | | - J. Baech
- Aalborg University Hospital Haematology Aalborg Denmark
| | - T. El‐Galaly
- Aalborg University Hospital Haematology Aalborg Denmark
| | - L. Kugathasan
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - A. S. Gerrie
- BC Cancer, Centre for Lymphoid Cancer Vancouver Canada
| | - D. Lewis
- University Hospitals Plymouth NHS Trust Haematology Plymouth UK
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19
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Yao N, Xie J, Li ZY, Zheng J, Jiang A, Wang YF, Liu MW. Effects of kangaroo mother care on immune function and prognosis of premature infants in the neonatal intensive care unit. J BIOL REG HOMEOS AG 2021; 35:663-667. [PMID: 33691389 DOI: 10.23812/21-34-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- N Yao
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - J Xie
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - Z Y Li
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - J Zheng
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - A Jiang
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - Y F Wang
- Department of Pediatrics, The First People's Hospital of Kunming, Xishan District, Kunming, China
| | - M W Liu
- Department of Department of Emergency Medicine, the First Affiliated Hospital of Kunming Medical University, Wuhua District, Kunming, China
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20
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Hu X, Hou X, Zhang Y, Chai X, Lian J, Wang C, Wang J, Jiang J, Jiang A. Size-Controlled Polarization Retention and Wall Current in Lithium Niobate Single-Crystal Memories. ACS Appl Mater Interfaces 2021; 13:16641-16649. [PMID: 33793196 DOI: 10.1021/acsami.0c22969] [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: 06/12/2023]
Abstract
Highly conductive domain walls in insulating ferroelectric LiNbO3 (LNO) single-crystal thin films with atomic smoothness are attractive for use in high-density integration of the ferroelectric domain wall random access memory (DWRAM) because of their excellent reliability and high read currents. However, downscaling of the memory size to the nanoscale could cause poor polarization retention. Understanding the size-dependent electrical performance of a memory cell is therefore crucial. In this work, highly insulating X-cut LNO thin films were bonded to SiO2/Si wafers and lateral mesa-like cells were fabricated on the film surfaces, where contact occurred with two-sided electrodes along the polar z-axis. Under application of an in-plane electric field above a coercive field (Ec), the domain within each memory cell was switched to be antiparallel to the unswitched referencing domain at the bottom; this resulted in the formation of a conducting domain wall, which enables the nondestructive readout strategy of the DWRAM. The cell, which has a lateral length (l) above a critical size (l0) of 105 nm, is found to be a mixture of two phases across the cell area. The inner area of the cell suffers from poor polarization retention because Ec = 150 kV/cm, as demonstrated by in-plane piezoresponse force microscopy imaging. In comparison, the outer periphery domains, which have lengths of 70 nm (∼l0/2), show good retention but require a much higher Ec of 785 kV/cm. The relevant physics is discussed as phase reconstruction occurs after release of the in-plane compressive strain near the outer regions; the results show good agreement with those of one-dimensional thermodynamic calculations and phase-field simulations. The measured current-voltage curves demonstrated a sudden enhancement of the wall current across the cell when l < l0, thus implying higher readout wall currents and better retention for the DWRAM at higher storage densities.
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Affiliation(s)
- Xiaobing Hu
- Stare Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Xu Hou
- Department of Engineering Mechanics and Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Yan Zhang
- Stare Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Xiaojie Chai
- Stare Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Jianwei Lian
- Stare Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Chao Wang
- Stare Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Jie Wang
- Department of Engineering Mechanics and Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Hangzhou 310027, China
| | - Jun Jiang
- Stare Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Anquan Jiang
- Stare Key Laboratory of ASIC & System, School of Microelectronics, Fudan University, Shanghai 200433, China
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21
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Jiang A, Yin D, Zhang L, Li B, Li R, Zhang X, Zhang Z, Liu H, Kim K, Wu W. Parsing the microRNA genetics basis regulating skeletal muscle fiber types and meat quality traits in pigs. Anim Genet 2021; 52:292-303. [PMID: 33840112 DOI: 10.1111/age.13064] [Citation(s) in RCA: 6] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2021] [Indexed: 12/29/2022]
Abstract
Muscle fibers are closely related to human diseases and livestock meat quality. However, the genetics basis of microRNAs (miRNAs) in regulating muscle fibers is not completely understood. In this study, we constructed the whole genome-wide miRNA expression profiles of porcine fast-twitch muscle [biceps femoris (Bf)] and slow-twitch muscle [soleus (Sol)], and identified hundreds of miRNAs, including four skeletal muscle-highly expressed miRNAs, ssc-miR-378, ssc-let-7f, ssc-miR-26a, and ssc-miR-27b-3p. Moreover, we identified 63 differentially expressed (DE) miRNAs between biceps femoris vs. soleus, which are the key candidate miRNAs regulating the skeletal muscle fiber types. In addition, we found that the expression of DE ssc-miR-499-5p was significantly correlated to the expression of Myoglobin (r = 0.6872, P < 0.0001) and Myosin heavy chain 7 (MYH7; r = 0.5408, P = 0.0020), and pH45 min (r = 0.3806, P = 0.0380) and glucose content (r = -0.4382, P = 0.0154); while the expression of DE ssc-miR-499-3p was significantly correlated to the expression of Myoglobin (r = 0.5340, P = 0.0024) and pH45 min (r = 0.4857, P = 0.0065). Taken together, our data established a sound foundation for further studies on the regulatory mechanisms of miRNAs in skeletal muscle fiber conversion and meat quality traits in livestock, and could provide a genetic explanation of the role of miRNAs in human muscular diseases.
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Affiliation(s)
- A Jiang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - D Yin
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - L Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - B Li
- College of Animal Science and Veterinary Medicine, Shenyang Agricultural University, Shenyang, 110866, China
| | - R Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - X Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Z Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - H Liu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - K Kim
- Department of Food Science, Purdue University, West Lafayette, IN, 47897, USA
| | - W Wu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
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22
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Tisack A, Jiang A, Veenstra J. Crusted, ulcerated plaques on the scalp and face. Clin Exp Dermatol 2020; 46:199-202. [PMID: 32959399 DOI: 10.1111/ced.14441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 07/29/2020] [Accepted: 08/04/2020] [Indexed: 11/30/2022]
Affiliation(s)
- A Tisack
- Wayne State University School of Medicine, Detroit, MI, USA
| | - A Jiang
- Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
| | - J Veenstra
- Department of Dermatology, Henry Ford Health System, Detroit, MI, USA
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23
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Yang X, Hu W, Xiu Z, Jiang A, Yang X, Saren G, Ji Y, Guan Y, Feng K. Effect of salt concentration on microbial communities, physicochemical properties and metabolite profile during spontaneous fermentation of Chinese northeast sauerkraut. J Appl Microbiol 2020; 129:1458-1471. [PMID: 32677269 DOI: 10.1111/jam.14786] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/29/2020] [Accepted: 07/12/2020] [Indexed: 11/30/2022]
Abstract
AIM The aim of this study was to study the effects of salt concentrations on the microbial communities, physicochemical properties, metabolome profiles and sensory characteristics during the fermentation of traditional northeast sauerkraut. METHODS AND RESULTS Northeast sauerkraut was spontaneously fermented under four salt concentrations (0·5, 1·5, 2·5 and 3·5%, w/w). The result of microbiological analysis showed that the population of lactic acid bacteria in 2·5%-salted sauerkraut was significantly higher than that in the other samples. Correspondingly, the speed of decrease in pH and accumulation of acids were the highest in 2·5%-salted sauerkraut. The glucose (analysed by HPLC) in 2·5%-salted sauerkraut was consumed more completely to produce higher levels of organic acids compared to those in the other samples. Principle component analysis showed clear differences in the metabolites of sauerkraut according to different salt concentrations. A higher level of volatiles (detected by HS-SPME/GC-MS) was identified in 2·5%-salted sauerkraut, and sensory evaluation demonstrated that 2·5%-salted sauerkraut had the best sensory characteristics. CONCLUSION The best quality of sauerkraut was obtained from fermented under 2·5% salt concentration. SIGNIFICANCE AND IMPACT OF THE STUDY This study facilitated the understanding of the effects of salt on the sauerkraut fermentation and may be useful for developing the quality of sauerkraut.
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Affiliation(s)
- X Yang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - W Hu
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - Z Xiu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China
| | - A Jiang
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - X Yang
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - G Saren
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - Y Ji
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - Y Guan
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - K Feng
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
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24
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Arthur S, Mottok A, Cojocaru R, Jiang A, Grande B, Alcaide M, Rushton C, Ennishi D, Kumar Lat P, Davidson J, Bushell K, Audas T, Unrau P, Sen D, Gascoyne R, Marra M, Connors J, Morin G, Scott D, Steidl C, Morin R. FUNCTIONAL CHARACTERIZATION OF NFKBIZ
3′ UTR MUTATIONS IN DIFFUSE LARGE B-CELL LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.43_2629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- S.E. Arthur
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - A. Mottok
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - R. Cojocaru
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - A. Jiang
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - B.M. Grande
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - M. Alcaide
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - C. Rushton
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - D. Ennishi
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - P. Kumar Lat
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - J. Davidson
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - K.R. Bushell
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - T. Audas
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - P. Unrau
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - D. Sen
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
| | - R.D. Gascoyne
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - M.A. Marra
- Genome Sciences Centre; BC Cancer; Vancouver Canada
| | - J.M. Connors
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - G.B. Morin
- Genome Sciences Centre; BC Cancer; Vancouver Canada
| | - D.W. Scott
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - C. Steidl
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - R.D. Morin
- Molecular Biology & Biochemistry; Simon Fraser University; Burnaby Canada
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25
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Hilton L, Alcaide M, Ben-Neriah S, Jiang A, Grande B, Rushton C, Boyle M, Meissner B, Scott D, Morin R. CRYPTIC MYC
AND BCL2
REARRANGEMENTS ARE AMONG A RANGE OF GENETIC MECHANISMS UNDERLYING THE DOUBLE HIT SIGNATURE IN NON-DOUBLE HIT DIFFUSE LARGE B-CELL LYMPHOMA. Hematol Oncol 2019. [DOI: 10.1002/hon.42_2629] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- L.K. Hilton
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
| | - M. Alcaide
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
| | - S. Ben-Neriah
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - A. Jiang
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - B.M. Grande
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
| | - C.K. Rushton
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
| | - M. Boyle
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - B. Meissner
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - D.W. Scott
- Centre for Lymphoid Cancer; BC Cancer; Vancouver Canada
| | - R.D. Morin
- Molecular Biology and Biochemistry; Simon Fraser University; Burnaby Canada
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26
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Xu B, Chen Y, Jiang A, Chen C, Wang K, Zheng J, Fu Y. [Application of next generation sequencing in congenital sensorineural deafness]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:811-815. [PMID: 29921047 DOI: 10.13201/j.issn.1001-1781.2018.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Indexed: 11/12/2022]
Abstract
Objective:The next-generation sequencing technology (NGS) was used to perform genetic testing on children diagnosed with sensorineural hearing loss in outpatient clinics.The information on the status and inheritance of disease causing genes in deafness was analyzed to provide a theoretical basis for genetic counseling, prenatal diagnosis, and birth defects prevention.Method:Ninety-four cases of sensorineural deafness diagnosed by medical history, audiological examination, and imaging examination were collected in our department.Next-generation sequencing was used to detect the region of exons of 159 genes, 6 mitochondrial genes, and 3 miRNAs related to deafness. The Sanger sequencing verification was performed on the parents of the probands to find out the gene expression status and relationship between the probands and the parents.Result:Of the 94 children with deafness,70 had severe sensorineural hearing loss, 13 had moderate to severe hearing loss, 8 had moderate hearing loss, and 3 had mild hearing loss.Twenty-three cases of cariogenic mutations were detected by next generation sequencing,and the total mutation rate was 24.5%. There were 11 cases of GJB2 mutations, including 6 homozygous mutations of 235delC, 4 heterozygous mutations of 235delC and 299_300del heterozygous mutation of 235delC and c.176_191del.There are 5 cases of SLC26A4 gene mutations, including 2 cases of homozygous mutations of c.919-2A> G, one case of c.919-2A> G and c.2168A>G compound heterozygous mutations, c.919-2A> G and c.754T> C compound heterozygous mutation in 1 case, c.919 2A> G and c.416-418del complex heterozygous mutation in 1 case. There were 2 cases of MT RNR1 mutations, and 1 case of STRC,KCNQ1,USH2A,POU3F4, and MITF mutations.Conclusion:The next-generation sequencing has features such as rapid, high throughput, and low cost, which is beneficial to medication guidance, genetic counseling, and marriage and parenting guidance,and help to effectively prevent or reduce the occurrence of hereditary deafness..
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Affiliation(s)
- B Xu
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - Y Chen
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - A Jiang
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - C Chen
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - K Wang
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - J Zheng
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
| | - Y Fu
- Department of Otolaryngology,the Children's Hospital,Zhejiang University School of Medicine,Hangzhou,310052,China
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Cheng W, Lu J, Lin W, Wei X, Li H, Zhao X, Jiang A, Yuan J. Effects of a galacto-oligosaccharide-rich diet on fecal microbiota and metabolite profiles in mice. Food Funct 2018; 9:1612-1620. [DOI: 10.1039/c7fo01720k] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Galacto-oligosaccharides (GOS) are prebiotics that positively affect the host's gut microbiota, which is important for the health of the host.
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Affiliation(s)
- W. Cheng
- College of Food Science
- South China Agricultural University
- Guangzhou
- China
| | - J. Lu
- Institute of Disease Control and Prevention
- PLA
- China
| | - W. Lin
- Institute of Disease Control and Prevention
- PLA
- China
| | - X. Wei
- Institute of Disease Control and Prevention
- PLA
- China
| | - H. Li
- Institute of Disease Control and Prevention
- PLA
- China
| | - X. Zhao
- Institute of Disease Control and Prevention
- PLA
- China
| | - A. Jiang
- College of Food Science
- South China Agricultural University
- Guangzhou
- China
| | - J. Yuan
- Institute of Disease Control and Prevention
- PLA
- China
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Zhou ZY, Fu Y, Bi J, Jiang A, Dai JR. [Study on the recent application of ear correction model in children with congenital auricular deformity]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:949-952. [PMID: 29798419 DOI: 10.13201/j.issn.1001-1781.2017.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Indexed: 11/12/2022]
Abstract
Objective:To study the short-term effect of Earwell ear correction model on congenital auricular deformity in children. Method:Selected 38 children with ear malformation, a total of 42 ears, born at the age of 7 days to 176 days, and the average age was 62.40 days, and all of patients were used the U.S. Earwell correction model for correction. Result:Final auricular morphologic results were classified as excellent (normal shape), good (nearnormal shape), and poor (slight or no improvement). And the patients were divided into group 1 (neonatal period), group 2 (28-90 days) and group 3 (more than 90 days) according to age, after using the Earwell ear correction device, the result which evaluated excellent are 100.00%, 89.47% and 72.73% respectively, and the average correction times are 16.75 days, 26.26 days and 38.91 days respectively, the ratio of complications are 0, 73.68% and 100.00% respectively. Conclusion:The effection of Earwell ear correction model is significant for the correction of children with congenital auricular deformity , the earlier treatment cause the better result, the shorter of the correcting time , and the lower of the complication rate.
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Affiliation(s)
- Z Y Zhou
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - Y Fu
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - J Bi
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - A Jiang
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
| | - J R Dai
- Department of Otolaryngology Head and Neck Surgery, Children's Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, 310000, China
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Chen B, Detyniecki K, Choi H, Hirsch L, Katz A, Legge A, Wong R, Jiang A, Buchsbaum R, Farooque P. Psychiatric and behavioral side effects of anti-epileptic drugs in adolescents and children with epilepsy. Eur J Paediatr Neurol 2017; 21:441-449. [PMID: 28238621 DOI: 10.1016/j.ejpn.2017.02.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [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] [Received: 09/29/2016] [Revised: 01/09/2017] [Accepted: 02/05/2017] [Indexed: 11/19/2022]
Abstract
PURPOSE The objective of the study was to compare the psychiatric and behavioral side effect (PBSE) profiles of both older and newer antiepileptic drugs (AEDs) in children and adolescent patients with epilepsy. METHOD We used logistic regression analysis to test the correlation between 83 non-AED/patient related potential predictor variables and the rate of PBSE. We then compared for each AED the rate of PBSEs and the rate of PBSEs that led to intolerability (IPBSE) while controlling for non-AED predictors of PBSEs. RESULTS 922 patients (≤18 years old) were included in our study. PBSEs and IPBSEs occurred in 13.8% and 11.2% of patients, respectively. Overall, a history of psychiatric condition, absence seizures, intractable epilepsy, and frontal lobe epilepsy were significantly associated with increased PBSE rates. Levetiracetam (LEV) had the greatest PBSE rate (16.2%). This was significantly higher compared to other AEDs. LEV was also significantly associated with a high rate of IPBSEs (13.4%) and dose-decrease rates due to IPBSE (6.7%). Zonisamide (ZNS) was associated with significantly higher cessation rate due to IPBSE (9.1%) compared to other AEDs. CONCLUSION Patients with a history of psychiatric condition, absence seizures, intractable epilepsy, or frontal lobe epilepsy are more likely to develop PBSE. PBSEs appear to occur more frequently in adolescent and children patients taking LEV compared to other AEDs. LEV-attributed PBSEs are more likely to be associated with intolerability and subsequent decrease in dose. The rate of ZNS-attributed IPBSEs is more likely to be associated with complete cessation of AED.
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Affiliation(s)
- B Chen
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA.
| | - K Detyniecki
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - H Choi
- Comprehensive Epilepsy Center, Dept. of Neurology, Columbia University, New York, NY, USA
| | - L Hirsch
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - A Katz
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - A Legge
- Comprehensive Epilepsy Center, Dept. of Neurology, Columbia University, New York, NY, USA
| | - R Wong
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - A Jiang
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
| | - R Buchsbaum
- Comprehensive Epilepsy Center, Dept. of Neurology, Columbia University, New York, NY, USA
| | - P Farooque
- Comprehensive Epilepsy Center, Dept. of Neurology, Yale University, New Haven, CT, USA
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Abstract
Postoperative cognitive dysfunction, which is associated with a wide range of cognitive functions including working memory, long-term memory, information processing, attention, and cognitive flexibility, is a major clinical issue in geriatric surgical patients. The aim of the current study was to determine the protective role and possible mechanisms of salidroside against isoflurane-induced cognitive impairment. Sprague Dawley rats were randomly assigned to five groups and were treated with or without salidroside before isoflurane exposure. Open-field and fear conditioning tests were conducted to evaluate the cognitive function of the rats. Moreover, the hippocampus tissues were obtained for biochemical analysis. The results showed that the isoflurane anesthesia decreased the freezing time to context significantly at 48 h after the isoflurane exposure in the fear conditioning test. Salidroside could ameliorate isoflurane-induced cognitive dysfunction. Further analysis demonstrated salidroside markedly suppressed the release of tumor necrosis factor-α and interleukin-1β. Moreover, salidroside reversed the decreased activity of choline acetyltransferase, superoxide dismutase, glutathione peroxidase, and content of acetylcholine, as well as the increased activity of acetylcholine esterase and content of malondialdehyde in hippocampal tissue of isoflurane-exposed rats. According to the results, we concluded that that salidroside has a protective effect against isoflurane-induced cognitive dysfunction by inhibiting excessive inflammatory responses, decreasing oxidative stress, and regulating the cholinergic system.
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Affiliation(s)
- L Liang
- 1 Department of anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - Z Ma
- 1 Department of anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - M Dong
- 2 Central Sterile Supply Department, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - J Ma
- 1 Department of anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - A Jiang
- 1 Department of anesthesiology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China
| | - X Sun
- 3 Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China
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Wei L, Liu QX, Zhu B, Liu WJ, Ding SJ, Lu HL, Jiang A, Zhang DW. Low-Cost and High-Productivity Three-Dimensional Nanocapacitors Based on Stand-Up ZnO Nanowires for Energy Storage. Nanoscale Res Lett 2016; 11:213. [PMID: 27097913 PMCID: PMC4839023 DOI: 10.1186/s11671-016-1429-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 04/08/2016] [Indexed: 06/05/2023]
Abstract
Highly powered electrostatic capacitors based on nanostructures with a high aspect ratio are becoming critical for advanced energy storage technology because of their high burst power and energy storage capability. We report the fabrication process and the electrical characteristics of high capacitance density capacitors with three-dimensional solid-state nanocapacitors based on a ZnO nanowire template. Stand-up ZnO nanowires are grown face down on p-type Si substrates coated with a ZnO seed layer using a hydrothermal method. Stacks of AlZnO/Al2O3/AlZnO are then deposited sequentially on the ZnO nanowires using atomic layer deposition. The fabricated capacitor has a high capacitance density up to 92 fF/μm(2) at 1 kHz (around ten times that of the planar capacitor without nanowires) and an extremely low leakage current density of 3.4 × 10(-8) A/cm(2) at 2 V for a 5-nm Al2O3 dielectric. Additionally, the charge-discharge characteristics of the capacitor were investigated, indicating that the resistance-capacitance time constants were 550 ns for both the charging and discharging processes and the time constant was not dependent on the voltage. This reflects good power characteristics of the fabricated capacitors. Therefore, the current work provides an exciting strategy to fabricate low-cost and easily processable, high capacitance density capacitors for energy storage.
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Affiliation(s)
- Lei Wei
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Qi-Xuan Liu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Bao Zhu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Wen-Jun Liu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Shi-Jin Ding
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China.
| | - Hong-Liang Lu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Anquan Jiang
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - David Wei Zhang
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
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Jassem A, Krajden M, Getman D, Hovey P, Hentzen C, Barakat N, Jiang A. Comparative evaluation of the Aptima HSV 1&2 assay and a lab developed real-time PCR test for detection of HSV-1 and HSV-2 viruses. J Clin Virol 2016. [DOI: 10.1016/j.jcv.2016.08.060] [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: 10/21/2022]
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Song SJ, Kim YJ, Park MH, Lee YH, Kim HJ, Moon T, Do Kim K, Choi JH, Chen Z, Jiang A, Hwang CS. Alternative interpretations for decreasing voltage with increasing charge in ferroelectric capacitors. Sci Rep 2016; 6:20825. [PMID: 26864751 PMCID: PMC4750000 DOI: 10.1038/srep20825] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 01/12/2016] [Indexed: 11/09/2022] Open
Abstract
Recent claim on the direct observation of a negative capacitance (NC) effect from a single layer epitaxial Pb(Zr0.2,Ti0.8)O3 (PZT) thin film was carefully reexamined, and alternative interpretations that can explain the experimental results without invoking the NC effect are provided. Any actual ferroelectric capacitor has an interfacial layer, and experiment always measures the sum of voltages across the interface layer and the ferroelectric layer. The main observation of decreasing ferroelectric capacitor voltage (VF) for increasing ferroelectric capacitor charge (QF), claimed to be the direct evidence for the NC effect, could be alternatively interpreted by either the sudden increase in the positive capacitance of a ferroelectric capacitor or decrease in the voltage across the interfacial layer due to resistance degradation. The experimental time-transient VF and QF could be precisely simulated by these alternative models that fundamentally assumes the reverse domain nucleation and growth. Supplementary experiments using an epitaxial BaTiO3 film supported this claim. This, however, does not necessarily mean that the realization of the NC effect within the ferroelectric layer is impractical under appropriate conditions. Rather, the circuit suggested by Khan et al. may not be useful to observe the NC effect directly.
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Affiliation(s)
- Seul Ji Song
- Department of Material Science &Engineering and Inter university Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea
| | - Yu Jin Kim
- Department of Material Science &Engineering and Inter university Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea
| | - Min Hyuk Park
- Department of Material Science &Engineering and Inter university Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea
| | - Young Hwan Lee
- Department of Material Science &Engineering and Inter university Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea
| | - Han Joon Kim
- Department of Material Science &Engineering and Inter university Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea
| | - Taehwan Moon
- Department of Material Science &Engineering and Inter university Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea
| | - Keum Do Kim
- Department of Material Science &Engineering and Inter university Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea
| | - Jung-Hae Choi
- Electronic Materials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
| | - Zhihui Chen
- State Key Laboratory of ASIC &System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Anquan Jiang
- State Key Laboratory of ASIC &System, School of Microelectronics, Fudan University, Shanghai 200433, China
| | - Cheol Seong Hwang
- Department of Material Science &Engineering and Inter university Semiconductor Research Center, Seoul National University, Seoul 151-744, Republic of Korea
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Wang X, Wang P, Wang J, Hu W, Zhou X, Guo N, Huang H, Sun S, Shen H, Lin T, Tang M, Liao L, Jiang A, Sun J, Meng X, Chen X, Lu W, Chu J. Ultrasensitive and Broadband MoS₂ Photodetector Driven by Ferroelectrics. Adv Mater 2015; 27:6575-81. [PMID: 26376198 DOI: 10.1002/adma.201503340] [Citation(s) in RCA: 291] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/12/2015] [Indexed: 05/13/2023]
Abstract
A few-layer MoS2 photodetector driven by poly(vinylidene fluoride-trifluoroethylene) ferroelectrics is achieved. The detectivity and responsitivity are up to 2.2 × 10(12) Jones and 2570 A W(-1), respectively, at 635 nm with ZERO gate bias. E(g) of MoS2 is tuned by the ultrahigh electrostatic field from the ferroelectric polarization. The photoresponse wavelengths of the photodetector are extended into the near-infrared (0.85-1.55 μm).
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Affiliation(s)
- Xudong Wang
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan, 411105, China
| | - Peng Wang
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Jianlu Wang
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Weida Hu
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Xiaohao Zhou
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Nan Guo
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Hai Huang
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Shuo Sun
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Hong Shen
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Tie Lin
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Minghua Tang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan, 411105, China
| | - Lei Liao
- Department of Physics and Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, Wuhan University, Wuhan, 430072, China
| | - Anquan Jiang
- Department of Microelectronics, Fudan University, 220 Handan Road, Shanghai, 200433, China
| | - Jinglan Sun
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Xiangjian Meng
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Xiaoshuang Chen
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Wei Lu
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
| | - Junhao Chu
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China
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Getman D, O’Donnell M, Cohen S, Jiang A. P05.13 Prevalence and anatomical distribution of mycoplasma genitaliummacrolide resistance markers from subjects enrolled in a multi-centre us clinical study. Br J Vener Dis 2015. [DOI: 10.1136/sextrans-2015-052270.299] [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: 11/03/2022]
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Geng W, Liu Y, Meng X, Bellaiche L, Scott JF, Dkhil B, Jiang A. Giant Negative Electrocaloric Effect in Antiferroelectric La-Doped Pb(ZrTi)O3 Thin Films Near Room Temperature. Adv Mater 2015; 27:3165-3169. [PMID: 25864588 DOI: 10.1002/adma.201501100] [Citation(s) in RCA: 43] [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] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Indexed: 06/04/2023]
Abstract
Antiferroelectric thin films are demonstrated as a new class of giant electrocaloric materials that exhibit a negative electrocaloric response of about -5 K near room temperature. The giant negative electrocaloric effect may open up a new paradigm for light, compact, reliable, and high-efficiency refrigeration devices.
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Affiliation(s)
- Wenping Geng
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, PR China
| | - Yang Liu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, PR China
- Laboratoire Structures, Propriétés et Modélisation des Solides, Université Paris-Saclay, CentraleSupélec, CNRS-UMR8580, Grande Voie des Vignes, Châtenay-Malabry, Cedex, 92295, France
| | - Xiangjian Meng
- National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Yu Tian Road 500, Shanghai, 200083, PR China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049, PR China
| | - Laurent Bellaiche
- Physics Department and Institute for Nanoscience and Engineering, University of Arkansas, Fayetteville, AR, 72701, USA
| | - James F Scott
- Department of Physics Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
- Departments of Chemistry and Physics, St. Andrews University, St. Andrews, KY16 9ST, UK
| | - Brahim Dkhil
- Laboratoire Structures, Propriétés et Modélisation des Solides, Université Paris-Saclay, CentraleSupélec, CNRS-UMR8580, Grande Voie des Vignes, Châtenay-Malabry, Cedex, 92295, France
| | - Anquan Jiang
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, PR China
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Ding Y, Li M, Chen L, Zhang Q, Jiang A, Chi Y. Combined low dose local anesthetics and opioids versus single use of LA for transurethral urological surgery: a meta-analysis. Niger J Clin Pract 2015; 18:256-62. [PMID: 25666003 DOI: 10.4103/1119-3077.151055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION The combination of reduced dose of local anesthetics (LA) and highly lipid-soluble synthetic opioids for patients undergoing transurethral surgery could reduce block duration and side-effects. However, it remains unclear what are the most appropriate levels of low dose and the extent to which the side-effects could be controlled. A meta-analysis was conducted to address this concern. MATERIALS AND METHODS Based on twelve randomized controlled trials, this meta-analysis pooled previous results to generate integrated evidence. RESULTS Combined low dose of LA and opioids had similar sensory block and significantly shorter motor block duration (weighted mean difference: -39.31 min, 95% confidence interval (CI): -50.58--28.05, P < 0.00001) compared with single use of LA. There was no evidence of higher risk of analgesic failure in the combination group. In addition, combined low dose LA and opioids was associated with significantly reduced rate of postoperative hypotension (risk ratios (RR): 0.60, 95% CI: 0.37-0.96, P = 0.03) and shivering (RR: 0.27, 95% CI: 0.11-0.64, P = 0.003), but with higher rate of sedation (RR: 3.14, 95% CI: 1.02-9.66, P = 0.05). CONCLUSION Combined low dose LA and opioids is a better choice for patients received transurethral surgery compared with single use of intrathecal LA.
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Affiliation(s)
| | | | | | | | | | - Y Chi
- Department of Anaesthesiology, Yantai Yuhuangding Hospital, Qingdao University School of Medicine, 20 Yuhuangding East Road, Yantai 264000, China
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Li Z, Jiang A, Yue T, Wang J, Wang Y, Su J. Purification and identification of five novel antioxidant peptides from goat milk casein hydrolysates. J Dairy Sci 2013; 96:4242-51. [PMID: 23684032 DOI: 10.3168/jds.2012-6511] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 02/23/2013] [Indexed: 11/19/2022]
Abstract
The present research described the preparation, purification, and identification of antioxidant peptides from goat milk casein (GMC). Goat milk casein was hydrolyzed by using a combination of neutral and alkaline proteases to obtain goat milk casein hydrolysates (GMCH) with high antioxidant activity. After desalting by nonpolar macroporous absorption resin, GMCH was isolated and purified by gel filtration chromatography and reversed-phase HPLC, respectively, and further identified by nanoliter electrospray ionization-tandem mass spectrometry. Antioxidant activities of GMC, GMCH, and pure peptides were evaluated and compared using free radical scavenging activity, metal ion chelating ability, and anti-lipid peroxidation ability. Compared with GMC, the free radical-scavenging ability and ferrous ion-chelating ability of GMCH increased significantly. The inhibition effect of lipid peroxidation of GMCH was much stronger than that of tert-butylhydroquinone and phytogermine and a little lower than that of ascorbic acid. The antioxidant activity of GMCH could be attributed to the high antioxidant activity of oligopeptides, especially 5 novel oligopeptides: Val-Tyr-Pro-Phe, Phe-Gly-Gly-Met-Ala-His, Phe-Pro-Tyr-Cys-Ala-Pro, Tyr-Val-Pro-Glu-Pro-Phe, and Tyr-Pro-Pro-Tyr-Glu-Thr-Tyr, which were first observed in GMCH. The antioxidant activity of these 5 novel oligopeptides and GMCH increased 3.59 to 380 times compared with GMC, combining anti-lipid peroxidation ability of GMCH, which indicated that GMCH and its purified fractions in different stages could be used as functional food ingredients, food additives, and pharmaceutical agents in the future.
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Affiliation(s)
- Z Li
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China.
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Li LJ, Zhu B, Ding SJ, Lu HL, Sun QQ, Jiang A, Zhang DW, Zhu C. Three-dimensional AlZnO/Al2O3/AlZnO nanocapacitor arrays on Si substrate for energy storage. Nanoscale Res Lett 2012; 7:544. [PMID: 23031347 PMCID: PMC3547769 DOI: 10.1186/1556-276x-7-544] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2012] [Accepted: 09/24/2012] [Indexed: 05/31/2023]
Abstract
High density three-dimensional AZO/Al2O3/AZO nanocapacitor arrays have been fabricated for energy storage applications. Using atomic layer deposition technique, the stack of AZO/Al2O3/AZO has been grown in the porous anodic alumina template which is directly formed on the Si substrate. The fabricated capacitor shows a high capacitance density of 15.3 fF/μm2 at 100 kHz, which is nearly 2.5 times over the planar capacitor under identical conditions in theory. Further, the charge-discharge characteristics of the capacitor are characterized, indicating that the resistance-capacitance time constants are equal to 300 ns for the charging and discharging processes, and have no dependence on the voltage supply. This reflects good power characteristics of the electrostatic capacitor.
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Affiliation(s)
- Lian-Jie Li
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, People's Republic of China
| | - Bao Zhu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, People's Republic of China
| | - Shi-Jin Ding
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, People's Republic of China
| | - Hong-Liang Lu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, People's Republic of China
| | - Qing-Qing Sun
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, People's Republic of China
| | - Anquan Jiang
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, People's Republic of China
| | - David Wei Zhang
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, People's Republic of China
| | - Chunxiang Zhu
- Silicon Nano Device Laboratory, Department of Electrical and Computer Engineering, National University of Singapore, Singapore 119260, Singapore
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Shen Z, Chen Z, Lu Q, Qiu Z, Jiang A, Qu X, Chen Y, Liu R. Nano-embossing technology on ferroelectric thin film Pb(Zr0.3,Ti0.7)O3 for multi-bit storage application. Nanoscale Res Lett 2011; 6:474. [PMID: 21794156 PMCID: PMC3211987 DOI: 10.1186/1556-276x-6-474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Accepted: 07/27/2011] [Indexed: 05/29/2023]
Abstract
In this work, we apply nano-embossing technique to form a stagger structure in ferroelectric lead zirconate titanate [Pb(Zr0.3, Ti0.7)O3 (PZT)] films and investigate the ferroelectric and electrical characterizations of the embossed and un-embossed regions, respectively, of the same films by using piezoresponse force microscopy (PFM) and Radiant Technologies Precision Material Analyzer. Attributed to the different layer thickness of the patterned ferroelectric thin film, two distinctive coercive voltages have been obtained, thereby, allowing for a single ferroelectric memory cell to contain more than one bit of data.
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Affiliation(s)
- Zhenkui Shen
- ASIC & System State Key Laboratory, Department of Microelectronics, Fudan University, Shanghai, 200433, China
| | - Zhihui Chen
- ASIC & System State Key Laboratory, Department of Microelectronics, Fudan University, Shanghai, 200433, China
| | - Qian Lu
- Department of Material Science, Fudan University, Shanghai, 200433, China
| | - Zhijun Qiu
- ASIC & System State Key Laboratory, Department of Microelectronics, Fudan University, Shanghai, 200433, China
| | - Anquan Jiang
- ASIC & System State Key Laboratory, Department of Microelectronics, Fudan University, Shanghai, 200433, China
| | - Xinping Qu
- ASIC & System State Key Laboratory, Department of Microelectronics, Fudan University, Shanghai, 200433, China
| | - Yifang Chen
- Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, UK
| | - Ran Liu
- ASIC & System State Key Laboratory, Department of Microelectronics, Fudan University, Shanghai, 200433, China
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Engelhardt BG, Jagasia M, Savani BN, Bratcher NL, Greer JP, Jiang A, Kassim AA, Lu P, Schuening F, Yoder SM, Rock MT, Crowe JE. Regulatory T cell expression of CLA or α(4)β(7) and skin or gut acute GVHD outcomes. Bone Marrow Transplant 2011; 46:436-42. [PMID: 20577222 PMCID: PMC3217583 DOI: 10.1038/bmt.2010.127] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2009] [Revised: 03/18/2010] [Accepted: 04/13/2010] [Indexed: 11/09/2022]
Abstract
Regulatory T cells (Tregs) are a suppressive subset of CD4(+) T lymphocytes implicated in the prevention of acute GVHD (aGVHD) after allo-SCT (ASCT). To determine whether increased frequency of Tregs with a skin-homing (cutaneous lymphocyte Ag, CLA(+)) or a gut-homing (α(4)β(7)(+)) phenotype is associated with reduced risk of skin or gut aGVHD, respectively, we quantified circulating CLA(+) or α(4)β(7)(+) on Tregs at the time of neutrophil engraftment in 43 patients undergoing ASCT. Increased CLA(+) Tregs at engraftment was associated with the prevention of skin aGVHD (2.6 vs 1.7%; P=0.038 (no skin aGVHD vs skin aGVHD)), and increased frequencies of CLA(+) and α(4)β(7)(+) Tregs were negatively correlated with severity of skin aGVHD (odds ratio (OR), 0.67; 95% confidence interval (CI), 0.46-0.98; P=0.041) or gut aGVHD (OR, 0.93; 95% CI, 0.88-0.99; P=0.031), respectively. This initial report suggests that Treg tissue-homing subsets help to regulate organ-specific risk and severity of aGVHD after human ASCT. These results need to be validated in a larger, multicenter cohort.
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Affiliation(s)
- BG Engelhardt
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - M Jagasia
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - BN Savani
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - NL Bratcher
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - JP Greer
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - A Jiang
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - AA Kassim
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - P Lu
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - F Schuening
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - SM Yoder
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - MT Rock
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - JE Crowe
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
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Shi M, Zhang H, Chen X, Guo Y, Tao J, Qi H, Gan J, Jiang A, Yu H, Liang J, Chen J, Yang L, Zhuang Y, Yan M, Gu Y, Yu X, Feng X, Yao Z. Clinical features of atopic dermatitis in a hospital-based setting in China. J Eur Acad Dermatol Venereol 2011; 25:1206-12. [PMID: 21214635 DOI: 10.1111/j.1468-3083.2010.03953.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Atopic dermatitis (AD) is a chronic relapsing inflammatory skin disease. There have been few detailed reports of the clinical evaluation of Chinese patients with AD. OBJECTIVES To give a profile of the clinical features of Chinese AD patients in a university hospital setting. METHODS A total of 1008 cases met Hanifin and Rajka diagnostic criteria of AD were recruited at Xinhua Hospital, Shanghai Jiaotong University School of Medicine, China. RESULTS In our survey, 22.7% patients were mild, 66.6% were moderate and 10.7% were severe according to the SCORAD index. Both the frequency and severity of the male patients were slightly higher. The frequency of asthma among the AD patients was 16.7% and it was increased with the age (χ2 = 205.20, P = 0.000). The frequencies of objective minor signs were demonstrated with age-related changes. Besides, three localized variants including eyelid eczema (49.8%), scalp dermatitis (49.7%), infra-auricular and retroauricular fissuring (44.8%) were commonly observed, especially in the infantile phase (P < 0.01). It was showed significant differences in serum total immunoglobulin E (IgE) and eosinophil cationic protein (ECP) levels of different age groups. The positive rate of Phadiatop was raised after 3 years old and that of the common food allergens were decreased after 6 years old. CONCLUSIONS More males than females had ongoing AD in our survey. Most AD debuted in the first year of the cases. High incidence of the three clinical signs: eyelid eczema, scalp dermatitis and infra-auricular and retroauricular fissuring among the patients suggests it can be a potential valuable diagnostic clue to AD.
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Affiliation(s)
- M Shi
- Department of Dermatology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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Ocak S, Yamashita H, Udyavar AR, Miller AN, Gonzalez AL, Zou Y, Jiang A, Yi Y, Shyr Y, Estrada L, Quaranta V, Massion PP. DNA copy number aberrations in small-cell lung cancer reveal activation of the focal adhesion pathway. Oncogene 2010; 29:6331-42. [PMID: 20802517 DOI: 10.1038/onc.2010.362] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Small-cell lung cancer (SCLC) is the most aggressive subtype of lung cancer in its clinical behavior, with a 5-year overall survival as low as 5%. Despite years of research in the field, molecular determinants of SCLC behavior are still poorly understood, and this deficiency has translated into an absence of specific diagnostics and targeted therapeutics. We hypothesized that tumor DNA copy number alterations would allow the identification of molecular pathways involved in SCLC progression. Array comparative genomic hybridization was performed on DNA extracted from 46 formalin-fixed paraffin-embedded SCLC tissue specimens. Genomic profiling of tumor and sex-matched control DNA allowed the identification of 70 regions of copy number gain and 55 regions of copy number loss. Using molecular pathway analysis, we found a strong enrichment in these regions of copy number alterations for 11 genes associated with the focal adhesion pathway. We verified these findings at the genomic, gene expression and protein level. Focal Adhesion Kinase (FAK), one of the central genes represented in this pathway, was commonly expressed in SCLC tumors and constitutively phosphorylated in SCLC cell lines. Those were poorly adherent to most substrates but not to laminin-322. Inhibition of FAK phosphorylation at Tyr(397) by a small-molecule inhibitor, PF-573,228, induced a dose-dependent decrease of adhesion and an increase of spreading in SCLC cell lines on laminin-322. Cells that tended to spread also showed a decrease in focal adhesions, as demonstrated by a decreased vinculin expression. These results support the concept that pathway analysis of genes in regions of copy number alterations may uncover molecular mechanisms of disease progression and demonstrate a new role of FAK and associated adhesion pathways in SCLC. Further investigations of FAK at the functional level may lead to a better understanding of SCLC progression and may have therapeutic implications.
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Affiliation(s)
- S Ocak
- Division of Allergy, Pulmonary and Critical Care Medicine, Vanderbilt University, Nashville, TN 37232-6838, USA
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Chang H, Qi X, Jiang A, Xu W, Trieu Y, Reece D. Erratum: 1p21 deletions are strongly associated with 1q21 gains and are an independent adverse prognostic factor for the outcome of high-dose chemotherapy in patients with multiple myeloma. Bone Marrow Transplant 2010. [DOI: 10.1038/bmt.2009.158] [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: 11/09/2022]
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Chang H, Qi X, Jiang A, Xu W, Young T, Reece D. 1p21 deletions are strongly associated with 1q21 gains and are an independent adverse prognostic factor for the outcome of high-dose chemotherapy in patients with multiple myeloma. Bone Marrow Transplant 2009; 45:117-21. [PMID: 19448682 DOI: 10.1038/bmt.2009.107] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Miller TW, Perez-Torres M, Wu H, Shyr Y, Guix M, Jiang A, Stal O, Arteaga CL. Loss of PTEN engages ErbB3 and IGF-I receptor signaling to promote antiestrogen resistance in breast cancer. Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-73] [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
Abstract #73
We sought to determine whether loss of the lipid phosphatase PTEN confers resistance to antiestrogens in estrogen receptor (ER)-positive breast cancer cells and primary tumors. Stable knockdown of PTEN expression (PTEN-kd) with shRNA in MCF-7, T47D, and MDA-361 ER+ human breast cancer cells resulted in upregulation of PI3K and P-Akt, resistance to tamoxifen and faslodex, and estrogen-independent growth. Upon PTEN-kd, ER levels were maintained in MCF-7 cells but markedly reduced in T47D and MDA-361 cells. While PTEN-kd upregulated ER transcriptional reporter activity in MCF-7 cells, opposite effects were seen in T47D and MDA-361 cells.
 We evaluated mechanisms of PI3K activation in PTEN-kd cells by immunoprecipitating the p85 regulatory subunit of PI3K and examining p85-bound tyrosine-phosphorylated adaptors or receptors. PTEN-kd increased the binding of p85 to IRS-1 (MCF-7) and ErbB3 (T47D). PTEN-kd increased PI3K pathway sensitivity to IGF-I (MCF-7) and endogenous ligand (T47D, MDA-361). PTEN-kd cells had increased and prolonged activation of IGF-IR and ErbB3, thus implicating PTEN in the regulation of signaling upstream of PI3K. Further, PTEN-kd increased non-genomic, estrogen-induced signaling via IGF-IR by increasing p85-IRS-1 binding and activation of PI3K/Akt in MCF-7 cells. Inhibition of PI3K and mTOR with the small molecule BEZ235, of IGF-IR with the small molecule AEW541, and/or of ErbB2-mediated activation of ErbB3 with lapatinib restored the growth inhibitory effect of antiestrogens.
 We generated gene expression signatures of PTEN loss in each cell line by microarray analyses. Comparison of these signatures to the Connectivity Map (Science 313:1929, 2006) suggested activation of PI3K, as signatures of PTEN loss negatively connected with those induced by the PI3K inhibitors wortmannin and LY294002 (all p<0.06). We found a 24-gene signature of PTEN loss common to all 3 lines, which we used to score the gene expression profiles of tumors from a cohort of 268 patients with ER+ breast cancer treated with adjuvant tamoxifen for 5 yrs and a median follow-up of 9.1 years (BMC Genomics 9:239, 2008). Patients with tumors exhibiting a signature of PTEN loss had shorter relapse-free survival (p<0.0001; log rank test). Eleven genes in the PTEN signature were individually predictive of disease outcome (p<0.05). In a separate, smaller cohort of patients with ER+ cancers treated with adjuvant tamoxifen (n=34), undetectable PTEN in tumor cells (measured by IHC) correlated with shorter relapse-free survival vs. tumors with detectable PTEN (p=0.06). These data suggest that 1) PTEN loss confers antiestrogen resistance to ER+ breast cancer by genomic and non-genomic mechanisms; 2) PTEN loss is permissive for activation of IGF-IR and ErbB3 signaling; 3) inhibition of IGF-IR and/or ErbB signaling pathways overcomes the resistance to antiestrogens conferred by PTEN loss; and 4) a gene expression signature reflective of loss of PTEN and/or absence of PTEN protein can predict poor patient outcome after adjuvant hormonal therapy.
Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 73.
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Affiliation(s)
| | | | - H Wu
- 1 Vanderbilt Univ., Nashville, TN
| | - Y Shyr
- 1 Vanderbilt Univ., Nashville, TN
| | - M Guix
- 1 Vanderbilt Univ., Nashville, TN
| | - A Jiang
- 1 Vanderbilt Univ., Nashville, TN
| | - O Stal
- 2 Linkoping Univ., Linkoping, Sweden
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Wang L, Chopp M, Zhang RL, Zhang L, Letourneau Y, Feng YF, Jiang A, Morris DC, Zhang ZG. The Notch pathway mediates expansion of a progenitor pool and neuronal differentiation in adult neural progenitor cells after stroke. Neuroscience 2008; 158:1356-63. [PMID: 19059466 DOI: 10.1016/j.neuroscience.2008.10.064] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2008] [Revised: 10/13/2008] [Accepted: 10/29/2008] [Indexed: 12/13/2022]
Abstract
Molecular mechanisms by which stroke increases neurogenesis have not been fully investigated. Using neural progenitor cells isolated from the subventricular zone (SVZ) of the adult rat subjected to focal cerebral ischemia, we investigated the Notch pathway in regulating proliferation and differentiation of adult neural progenitor cells after stroke. During proliferation of neural progenitor cells, ischemic neural progenitor cells exhibited substantially increased levels of Notch, Notch intracellular domain (NICD), and hairy enhancer of split (Hes) 1, which was associated with a significant increase of proliferating cells. Blockage of the Notch pathway by short interfering ribonucleic acid (siRNA) against Notch or a gamma secretase inhibitor significantly reduced Notch, NICD and Hes1 expression and cell proliferation induced by stroke. During differentiation of neural progenitor cells, Notch and Hes1 expression was downregulated in ischemic neural progenitor cells, which was coincident with a significant increase of neuronal population. Inhibition of the Notch pathway with a gamma secretase inhibitor further substantially increased neurons, but did not alter astrocyte population in ischemic neural progenitor cells. These data suggest that the Notch signaling pathway mediates adult SVZ neural progenitor cell proliferation and differentiation after stroke.
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Affiliation(s)
- L Wang
- Department of Neurology, Henry Ford Health Sciences Center, Detroit, MI 48202, USA
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Harutyunyan AR, Awasthi N, Jiang A, Setyawan W, Mora E, Tokune T, Bolton K, Curtarolo S. Reduced carbon solubility in Fe nanoclusters and implications for the growth of single-walled carbon nanotubes. Phys Rev Lett 2008; 100:195502. [PMID: 18518458 DOI: 10.1103/physrevlett.100.195502] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2007] [Indexed: 05/26/2023]
Abstract
Fe nanoclusters are becoming the standard catalysts for growing single-walled carbon nanotubes via chemical vapor decomposition. Contrary to the Gibbs-Thompson model, we find that the reduction of the catalyst size requires an increase of the minimum temperature necessary for the growth. We address this phenomenon in terms of solubility of C in Fe nanoclusters and, by using first-principles calculations, we devise a simple model to predict the behavior of the phases competing for stability in Fe-C nanoclusters at low temperature. We show that, as a function of particle size, there are three scenarios compatible with steady state growth, limited growth, and no growth of single-walled carbon nanotubes, corresponding to unaffected, reduced, and no solubility of C in the particles.
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Sabbah HN, Wang M, Ilsar I, Jiang A, Tuvia S. Intracoronary administration of BL-1040 prevents progressive left ventricular enlargement in dogs with acute myocardial infarction. Cardiovascular Revascularization Medicine 2008. [DOI: 10.1016/j.carrev.2008.02.067] [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: 10/22/2022]
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Brewer R, Wang M, Rastogi S, Ilsar I, Jiang A, Viole T, Konstam M, Sabbah H. 281: Acute Left Ventricular Unloading in Dogs with Chronic Heart Failure: Comparison of Hemodynamics and Gene Expression between Intra-Aortic Balloon Counterpulsation and Continuous Aortic Flow Augmentation. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.290] [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] Open
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