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An H, Nason-Tomaszewski SR, Lim J, Kwon K, Willsey MS, Patil PG, Kim HS, Sylvester D, Chestek CA, Blaauw D. A Power-Efficient Brain-Machine Interface System With a Sub-mw Feature Extraction and Decoding ASIC Demonstrated in Nonhuman Primates. IEEE Trans Biomed Circuits Syst 2022; 16:395-408. [PMID: 35594208 PMCID: PMC9375520 DOI: 10.1109/tbcas.2022.3175926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Intracortical brain-machine interfaces have shown promise for restoring function to people with paralysis, but their translation to portable and implantable devices is hindered by their high power consumption. Recent devices have drastically reduced power consumption compared to standard experimental brain-machine interfaces, but still require wired or wireless connections to computing hardware for feature extraction and inference. Here, we introduce a Neural Recording And Decoding (NeuRAD) application specific integrated circuit (ASIC) in 180 nm CMOS that can extract neural spiking features and predict two-dimensional behaviors in real-time. To reduce amplifier and feature extraction power consumption, the NeuRAD has a hardware accelerator for extracting spiking band power (SBP) from intracortical spiking signals and includes an M0 processor with a fixed-point Matrix Acceleration Unit (MAU) for efficient and flexible decoding. We validated device functionality by recording SBP from a nonhuman primate implanted with a Utah microelectrode array and predicting the one- and two-dimensional finger movements the monkey was attempting to execute in closed-loop using a steady-state Kalman filter (SSKF). Using the NeuRAD's real-time predictions, the monkey achieved 100% success rate and 0.82 s mean target acquisition time to control one-dimensional finger movements using just 581 μW. To predict two-dimensional finger movements, the NeuRAD consumed 588 μW to enable the monkey to achieve a 96% success rate and 2.4 s mean acquisition time. By employing SBP, ASIC brain-machine interfaces can close the gap to enable fully implantable therapies for people with paralysis.
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Costello JT, Nason SR, An H, Lee J, Mender MJ, Temmar H, Wallace DM, Lim J, Willsey MS, Patil PG, Jang T, Phillips JD, Kim HS, Blaauw D, Chestek CA. A low-power communication scheme for wireless, 1000 channel brain-machine interfaces. J Neural Eng 2022; 19. [PMID: 35613546 DOI: 10.1088/1741-2552/ac7352] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 02/23/2022] [Accepted: 05/24/2022] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Brain-machine interfaces (BMIs) have the potential to restore motor function but are currently limited by electrode count and long-term recording stability. These challenges may be solved through the use of free-floating "motes" which wirelessly transmit recorded neural signals, if power consumption can be kept within safe levels when scaling to thousands of motes. Here, we evaluated a pulse-interval modulation (PIM) communication scheme for infrared (IR)-based motes that aims to reduce the wireless data rate and system power consumption. APPROACH To test PIM's ability to efficiently communicate neural information, we simulated the communication scheme in a real-time closed-loop BMI with non-human primates. Additionally, we performed circuit simulations of an IR-based 1000-mote system to calculate communication accuracy and total power consumption. MAIN RESULTS We found that PIM at 1kb/s per channel maintained strong correlations with true firing rate and matched online BMI performance of a traditional wired system. Closed-loop BMI tests suggest that lags as small as 30 ms can have significant performance effects. Finally, unlike other IR communication schemes, PIM is feasible in terms of power, and neural data can accurately be recovered on a receiver using 3mW for 1000 channels. SIGNIFICANCE These results suggest that PIM-based communication could significantly reduce power usage of wireless motes to enable higher channel-counts for high-performance BMIs.
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Affiliation(s)
- Joseph T Costello
- Electrical and Computer Engineering, University of Michigan, 2800 Plymouth Rd, B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
| | - Samuel R Nason
- Biomedical Engineering, University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
| | - Hyochan An
- Electrical and Computer Engineering, University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
| | - Jungho Lee
- Electrical and Computer Engineering, University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
| | - Matthew J Mender
- Biomedical Engineering, University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
| | - Hisham Temmar
- Biomedical Engineering, University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
| | - Dylan M Wallace
- Robotics Institute, University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, 48109-1382, UNITED STATES
| | - Jongyup Lim
- Electrical and Computer Engineering, University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
| | - Matthew S Willsey
- Department of Neurosurgery, University of Michigan Medical School, 1500 E Medical Center Drive, Ann Arbor, 48109-0624, UNITED STATES
| | - Parag G Patil
- Neurosurgery, University of Michigan, 1500 E Medical Center Drive, Ann Arbor, Michigan, 48109, UNITED STATES
| | - Taekwang Jang
- Department of Information Technology and Electrical Engineering, ETH Zurich, ETH Zurich, Rämistrasse 101, Zurich, 8092, SWITZERLAND
| | - Jamie Dean Phillips
- Department of Electrical and Computer Engineering, University of Delaware, Evans Hall, 139 The Green,, Newark, Delaware, 19716-5600, UNITED STATES
| | - Hun-Seok Kim
- Electrical and Computer Engineering, University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
| | - David Blaauw
- University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
| | - Cynthia A Chestek
- Biomedical Engineering, University of Michigan, 2800 Plymouth Rd B10, Ann Arbor, Michigan, 48109-1382, UNITED STATES
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3
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Liu Z, An H, Lin S, Kraisangka J, Correa-Jaque P, Webb A, Tiwari H, Wiener H, Benza R. Clinical Variables in Predicting Survival and Hospitalization for Pulmonary Arterial Hypertension Using Harmonized Data. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.076] [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: 11/25/2022] Open
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Woo J, Kim JE, Im JJ, Lee J, Jeong HS, Park S, Jung SY, An H, Yoon S, Lim SM, Lee S, Ma J, Shin EY, Han YE, Kim B, Lee EH, Feng L, Chun H, Yoon BE, Kang I, Dager SR, Lyoo IK, Lee CJ. Correction: Astrocytic water channel aquaporin-4 modulates brain plasticity in both mice and humans: a potential gliogenetic mechanism underlying language-associated learning. Mol Psychiatry 2021; 26:7853. [PMID: 34305137 DOI: 10.1038/s41380-021-01185-z] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J Woo
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - J E Kim
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - J J Im
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - J Lee
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Division of Functional Food Research, Korea Food Research Institute, Seongnam, Republic of Korea
| | - H S Jeong
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S Park
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - S- Y Jung
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - H An
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,KU-KIST Graduate School of Converging Science and Technology, Korea University,145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - S Yoon
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - S M Lim
- Department of Radiology, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - S Lee
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - J Ma
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - E Y Shin
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - Y- E Han
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - B Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - E H Lee
- Green Cross Laboratories, Yongin, Republic of Korea
| | - L Feng
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - H Chun
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - B- E Yoon
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Department of Nanobiomedical Science, Dankook University, Cheonan, Republic of Korea
| | - I Kang
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - S R Dager
- Department of Radiology, University of Washington, Seattle, WA, USA.,Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - I K Lyoo
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea. .,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea. .,Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea.
| | - C J Lee
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea. .,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea. .,KU-KIST Graduate School of Converging Science and Technology, Korea University,145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
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Guilliams KP, Gupta N, Srinivasan S, Binkley MM, Ying C, Couture L, Gross J, Wallace A, McKinstry RC, Vo K, Lee JM, An H, Goyal MS. MR Imaging Differences in the Circle of Willis between Healthy Children and Adults. AJNR Am J Neuroradiol 2021; 42:2062-2069. [PMID: 34556478 PMCID: PMC8583273 DOI: 10.3174/ajnr.a7290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 07/19/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Asymmetries in the circle of Willis have been associated with several conditions, including migraines and stroke, but they may also be age-dependent. This study examined the impact of age and age-dependent changes in cerebral perfusion on circle of Willis anatomy in healthy children and adults. MATERIALS AND METHODS We performed an observational, cross-sectional study of bright and black-blood imaging of the proximal cerebral vasculature using TOF-MRA and T2 sampling perfection with application-optimized contrasts by using different flip angle evolution (T2-SPACE) imaging at the level of the circle of Willis in 23 healthy children and 43 healthy adults (4-74 years of age). We compared arterial diameters measured manually and cerebral perfusion via pseudocontinuous arterial spin-labeling between children and adults. RESULTS We found that the summed cross-sectional area of the circle of Willis is larger in children than in adults, though the effect size was smaller with T2-SPACE-based measurements than with TOF-MRA. The circle of Willis is also more symmetric in children, and nonvisualized segments occur more frequently in adults than in children. Moreover, the size and symmetry of the circle of Willis correlate with cerebral perfusion. CONCLUSIONS Our results demonstrate that the circle of Willis is different in size and symmetry in healthy children compared with adults, likely associated with developmental changes in cerebral perfusion. Further work is needed to understand why asymmetric vasculature develops in some but not all adults.
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Affiliation(s)
- K P Guilliams
- From the Department of Neurology (K.P.G., M.M.B., J.-M.L., M.S.G.)
- Department of Pediatrics (K.P.G., R.C.M.)
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
| | - N Gupta
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
| | - S Srinivasan
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
| | - M M Binkley
- From the Department of Neurology (K.P.G., M.M.B., J.-M.L., M.S.G.)
| | - C Ying
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
| | - L Couture
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
| | - J Gross
- Division of Neuroradiology (J.G.), Midwest Radiology, St. Paul, Minnesota
| | - A Wallace
- Department of Neurointerventional Surgery (A.W.), Ascension Columbia St. Mary's Hospital, Milwaukee, Wisconsin
| | - R C McKinstry
- Department of Pediatrics (K.P.G., R.C.M.)
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
| | - K Vo
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
| | - J-M Lee
- From the Department of Neurology (K.P.G., M.M.B., J.-M.L., M.S.G.)
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
- Department of Biomedical Engineering (J.-M.L.)
| | - H An
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
| | - M S Goyal
- From the Department of Neurology (K.P.G., M.M.B., J.-M.L., M.S.G.)
- Mallinckrodt Institute of Radiology (K.P.G., N.G., S.S., C.Y., L.C., R.C.M., K.V., J.-M.L., H.A., M.S.G.)
- Neuroscience (M.S.G.), Washington University School of Medicine, St. Louis, Missouri
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6
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Hwang H, An H, Lee S, Byun J. LB784 Anticancer activity of Ramalin isolated from ramalina terebrata on human Squamous Cell Carcinoma in vitro and in vivo. J Invest Dermatol 2021. [DOI: 10.1016/j.jid.2021.07.048] [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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7
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Kato K, Akeda K, Miyazaki S, Yamada J, Muehleman C, Miyamoto K, Asanuma YA, Asanuma K, Fujiwara T, Lenz ME, Nakazawa T, An H, Masuda K. NF-kB decoy oligodeoxynucleotide preserves disc height in a rabbit anular-puncture model and reduces pain induction in a rat xenograft-radiculopathy model. Eur Cell Mater 2021; 42:90-109. [PMID: 34284523 DOI: 10.22203/ecm.v042a07] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 01/31/2023] Open
Abstract
While it is known that the degenerated intervertebral disc (IVD) is one of the primary reasons for low-back pain and subsequent need for medical care, there are currently no established effective methods for direct treatment. Nuclear factor-κB (NF-κB) is a transcription factor that regulates various genes' expression, among which are inflammatory cytokines, in many tissues including the IVD. NF-κB decoy is an oligodeoxynucleotide containing the NF-κB binding site that entraps NF-κB subunits, resulting in suppression of NF-κB activity. In the present preclinical study, NF-κB decoy was injected into degenerated IVDs using the rabbit anular-puncture model. In terms of distribution, NF-κB decoy persisted in the IVDs up to at least 4 weeks after injection. The remaining amount of NF-κB decoy indicated that it fit a double-exponential-decay equation. Investigation of puncture-caused degeneration of IVDs showed that NF-κB decoy injection recovered, dose-dependently, the reduced disc height that was associated with reparative cell cloning and morphological changes, as assessed through histology. Gene expression, by quantitative real-time polymerase chain reaction (qRT-PCR), showed that NF-κB decoy attenuated inflammatory gene expression, such as that of interleukin-1 and tumor necrosis factor-α, in rabbit degenerated IVDs. NF-κB decoy also reduced the pain response as seen using the "pain sensor" nude rat xenograft-radiculopathy model. This is the first report demonstrating that NF-κB decoy suppresses the inflammatory response in degenerated IVDs and restores IVD disc height loss. Therefore, the intradiscal injection of NF-κB decoy may have the potential as an effective therapeutic strategy for discogenic pain associated with degenerated IVDs.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - K Masuda
- Department of Orthopedic Surgery, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093,
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Ma S, Chen S, Zhou C, An H, Su Z, Cui Y, Lin Y. P-296 Establishment of adoptive cell therapy with tumor-infiltrating lymphocytes for liver and oesophageal cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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9
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Ying XD, Wei G, An H. Sodium butyrate relieves lung ischemia-reperfusion injury by inhibiting NF-κB and JAK2/STAT3 signaling pathways. Eur Rev Med Pharmacol Sci 2021; 25:413-422. [PMID: 33506931 DOI: 10.26355/eurrev_202101_24409] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Ischemia-reperfusion (IR) is the main cause of acute lung injury (ALI) in clinical lung transplantation, extracorporeal circulation, lung sleeve resection, trauma and cardiopulmonary resuscitation. The inflammatory response and oxidative stress following IR are factors that cause and aggravate its secondary damage. The purpose of this study was to investigate the efficacy and mechanism of sodium butyrate (NaB) on lung ischemia-reperfusion injury (LIRI). MATERIALS AND METHODS We used male C57BL/6 mice to construct the LIRI model and administered the mice with NaB. By examining the expression of inflammatory factors and oxidative stress-related molecules in mouse lung tissue, we investigated the effects of NaB on inflammation and oxidative stress in lung tissue after IR. In addition, the changes in the activity of the NF-κB and JAK2/STAT3 signaling pathways were also examined to determine the mechanism of NaB. RESULTS The expression levels of the inflammatory factors (IL-1β, IL-6 and TNF-α) in lung tissue of mice after IR were significantly increased, while NaB reduced the expression of inflammatory factors. In addition, the oxidative stress level of mouse lung tissue after IR increased significantly, showing the decrease of antioxidant molecules SOD1/2, catalase (CAT), and Peroxiredoxin 1 (Prdx1), while the intake of NaB increased the antioxidant level of mouse lung tissue. The activities of NF-κB and JAK2/STAT3 signaling pathways were significantly increased in lung tissue after IR, whereas NaB inhibited the activity of NF-κB and JAK2/STAT3 signaling pathways. CONCLUSIONS NaB relieves LIRI by inhibiting NF-κB and JAK2/STAT3 signaling pathways to reduce inflammation and oxidative stress levels in lung tissue of mice after IR.
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Affiliation(s)
- X-D Ying
- Department of Intensive Care Unit, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, China.
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Kofina V, An H, Rawal SY. Iatrogenic acid-induced gingival recession during crown cementation: A case report. Aust Dent J 2021; 66:332-336. [PMID: 33438220 DOI: 10.1111/adj.12820] [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] [Subscribe] [Scholar Register] [Accepted: 01/07/2021] [Indexed: 11/30/2022]
Abstract
Accidental contact of various chemicals in dentistry may cause damage to the gingiva. A male patient presented for a full mouth rehabilitation with ceramic crowns. The patient underwent the steps of ceramic crown preparation uneventfully. At the time of crown delivery, cotton rolls were placed in several vestibular areas for isolation. They were regularly changed during different steps of etching and cementation process, which included the use of Multilink Primer B (Ivoclar Vivadent™). On removal of the cotton roll in the area of upper right canine, the gingival tissues appeared blanched and grayish white. The cotton roll was found to have absorbed some etching material in it. As the patient was asymptomatic, he was dismissed. Two weeks later, the patient presented with inflammation and gingival recession in the same area. Initially, he was treated palliatively, and subsequently, he received a connective tissue graft on the upper right canine. This case report showed that acid etching material used during the prosthodontic cementation may have caused a gingival recession, which was successfully treated with tunnel flap and connective tissue graft. Optimal isolation of the operative field should be performed to avoid this problem.
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Affiliation(s)
- V Kofina
- Marquette University School of Dentistry, Milwaukee, WI, USA
| | - H An
- Marquette University School of Dentistry, Milwaukee, WI, USA
| | - S Y Rawal
- Marquette University School of Dentistry, Milwaukee, WI, USA
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Koksal N, An H, Fidan B. Backstepping-based adaptive control of a quadrotor UAV with guaranteed tracking performance. ISA Trans 2020; 105:98-110. [PMID: 32591252 DOI: 10.1016/j.isatra.2020.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/08/2020] [Accepted: 06/08/2020] [Indexed: 06/11/2023]
Abstract
In this paper, a backstepping based indirect adaptive control design and an alternative direct adaptive control scheme, both with guaranteed transient and steady-state tracking performances, are proposed for trajectory tracking of a quadrotor unmanned aerial vehicle (UAV). Backstepping techniques, combined with a prescribed performance function based error transformation, are employed in both designs to achieve the bounded transient and steady-state tracking errors of the strict-feedback position system which comprises both lateral position and altitude dynamics. The effects of parametric inertia and drag uncertainties on attitude regulation are compensated using a least squares based parameter identification algorithm in the indirect adaptive control design, and using a constructive Lyapunov analysis approach in the direct adaptive control scheme. The stability of the closed-loop system for both designs is proven via Lyapunov analysis. Simulation and experimental test results are provided to verify the effectiveness of the proposed control designs.
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Affiliation(s)
- N Koksal
- The Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
| | - H An
- Space Control and Inertial Technology Research Center, Harbin Institute of Technology, Harbin, 150001, PR China.
| | - B Fidan
- The Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
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12
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Nason SR, Vaskov AK, Willsey MS, Welle EJ, An H, Vu PP, Bullard AJ, Nu CS, Kao JC, Shenoy KV, Jang T, Kim HS, Blaauw D, Patil PG, Chestek CA. A low-power band of neuronal spiking activity dominated by local single units improves the performance of brain-machine interfaces. Nat Biomed Eng 2020; 4:973-983. [PMID: 32719512 DOI: 10.1038/s41551-020-0591-0] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 06/24/2020] [Indexed: 12/18/2022]
Abstract
The large power requirement of current brain-machine interfaces is a major hindrance to their clinical translation. In basic behavioural tasks, the downsampled magnitude of the 300-1,000 Hz band of spiking activity can predict movement similarly to the threshold crossing rate (TCR) at 30 kilo-samples per second. However, the relationship between such a spiking-band power (SBP) and neural activity remains unclear, as does the capability of using the SBP to decode complicated behaviour. By using simulations of recordings of neural activity, here we show that the SBP is dominated by local single-unit spikes with spatial specificity comparable to or better than that of the TCR, and that the SBP correlates better with the firing rates of lower signal-to-noise-ratio units than the TCR. With non-human primates, in an online task involving the one-dimensional decoding of the movement of finger groups and in an offline two-dimensional cursor-control task, the SBP performed equally well or better than the TCR. The SBP may enhance the decoding performance of neural interfaces while enabling substantial cuts in power consumption.
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Affiliation(s)
- Samuel R Nason
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Alex K Vaskov
- Robotics Graduate Program, University of Michigan, Ann Arbor, MI, USA
| | - Matthew S Willsey
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.,Department of Neurosurgery, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Elissa J Welle
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Hyochan An
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA
| | - Philip P Vu
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Autumn J Bullard
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Chrono S Nu
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Jonathan C Kao
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, USA.,Neurosciences Program, University of California, Los Angeles, Los Angeles, CA, USA
| | - Krishna V Shenoy
- Department of Electrical Engineering, Stanford University, Stanford, CA, USA.,Department of Bioengineering, Stanford University, Stanford, CA, USA.,Department of Neurobiology, Stanford University, Stanford, CA, USA.,The Bio-X Program, Stanford University, Stanford, CA, USA.,Wu Tsai Neuroscience Institute, Stanford University, Stanford, CA, USA.,Howard Hughes Medical Institute, Stanford University, Stanford, CA, USA
| | - Taekwang Jang
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA.,Department of Information Technology and Electrical Engineering, ETH Zürich, Zürich, Switzerland
| | - Hun-Seok Kim
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA
| | - David Blaauw
- Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA
| | - Parag G Patil
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA.,Department of Neurosurgery, University of Michigan Medical School, Ann Arbor, MI, USA.,Department of Neurology, University of Michigan Medical School, Ann Arbor, MI, USA.,Neuroscience Graduate Program, University of Michigan, Ann Arbor, MI, USA
| | - Cynthia A Chestek
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA. .,Robotics Graduate Program, University of Michigan, Ann Arbor, MI, USA. .,Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA. .,Neuroscience Graduate Program, University of Michigan, Ann Arbor, MI, USA.
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13
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Kawaguchi K, Manaka D, Konishi S, Ota T, Ikeda Y, Kudo R, An H, Sasaki N, Hamasu S, Nishitai R, Mori Y, Inamoto N, Shibamoto K, Ogata A, Yamaoka T, Himoto Y. P-145 CT-based texture analysis using radiomics for hepatic sinusoidal obstruction syndrome (HSOS) in colorectal cancer patients treated with oxaliplatin containing chemotherapy. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.227] [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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14
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Konishi S, Manaka D, Kawaguchi K, Ota T, Ikeda Y, Kudo R, An H, Sasaki N, Hamasu S, Nishitai R, Mori Y, Inamoto N, Shibamoto K, Ogata A, Yamaoka T, Himoto Y. SO-15 Radiomic signature for prediction of peritoneal disseminations in gastric cancer which were not detected by routine CT examinations. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.04.030] [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: 10/23/2022] Open
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15
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Suh† S, Kim G, Jeoung S, An H. 1105 A Randomized Controlled Trial of a Psychological Intervention for Decreasing Bedtime Procrastination: The BED-PRO Study. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1100] [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: 11/14/2022] Open
Abstract
Abstract
Introduction
Bedtime Procrastination (BP) is defined as the behavior of going to bed later than intended, without having external reasons for doing so. Previous studies have shown that BP has a negative effect on sleep and health, and there is a need to develop interventions to decrease BP. This study (BED-PRO) is an ongoing study evaluating a behavioral intervention to reduce BP.
Methods
Fifteen participants who scored higher than 33 on the Bedtime Procrastination Scale were randomized to either the treatment (TRT, n=6) or control group (CTRL, n=9). Treatment consisted of four face-to-face individual sessions. All participants completed self-report questionnaires on Bedtime Procrastination Scale (BPS), Epworth Sleepiness Scale (ESS), Positive Affect and Negative Affect Schedule (K-PANAS-R) and completed the 7-day sleep diary. Data was analyzed using two-way mixed Measures Analysis of Variance (ANOVA).
Results
Mean age of the participants was 21.78 (±1.8) years and 80% (n=12) were females. Group by time interactions from repeated measures analyses revealed significant post intervention improvements in the TRT group compared to the CTRL group on all bedtime procrastination duration and scores, sleep efficiency, refreshment after waking, daytime sleepiness and negative affect of K-PANAS-R. Specifically, bedtime procrastination duration in the TRT group measured by sleep diaries decreased significantly from 75.30 (±58.57) min to 14.83 (±7.83) min, while the CTRL group did not change from 57.60 (±32.01) to 54.36 (±40.82) min (p=0.019). In addition, the TRT group reported significant improvements in bedtime procrastination scores from 36.00 (±4.05) to 22.50 (±6.72).
Conclusion
Based on results, the behavioral intervention used in this study looks promising in improving bedtime procrastination and sleep.
Support
This work was supported by the Ministry of Education of the Republic of Korea and the National Research Foundation of Korea(NRF-2018S1A5A8026807)
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Affiliation(s)
- S Suh†
- SUNGSHIN WOMEN’S UNIVERSITY, SEOUL, KOREA, REPUBLIC OF
| | - G Kim
- SUNGSHIN WOMEN’S UNIVERSITY, SEOUL, KOREA, REPUBLIC OF
| | - S Jeoung
- SUNGSHIN WOMEN’S UNIVERSITY, SEOUL, KOREA, REPUBLIC OF
| | - H An
- SUNGSHIN WOMEN’S UNIVERSITY, SEOUL, KOREA, REPUBLIC OF
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16
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Li XY, Zhuang AW, Sun SW, An H. [Research on the characteristics of the formation and inheritance of Lei's medicine in Quzhou from the perspective of regional medicine]. Zhonghua Yi Shi Za Zhi 2020; 50:83-87. [PMID: 32536102 DOI: 10.3760/cma.j.cn112155-20190705-00063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Lei's medicine is the main school of traditional Chinese medicine in Quzhou, Zhejiang Province. It originated from Xin'an medical school. It has been passed on for more than 200 years, but it is still lack of in-depth study. From the perspective of regional medicine, combined with the regional characteristics of Quzhou, absorbing the research results of local social history and environmental history, starting with the historical materials such as Lei's medical works, local chronicles literature and so on, the school characteristics are summarized as: the formation of "treatment in accordance with three types of disease causes" , the academic inheritance of "inheriting the past and integrating the present" , the inheritance mode of "multiple integration" , the cultural connotation of "combining medicine with Confucianism" , and the school characteristics of "integration and innovation" . The purpose of this paper is to provide reference for the research of academic schools and the inheritance of traditional Chinese medicine.
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Affiliation(s)
- X Y Li
- Institute of Traditional Chinese Medicine Literature and Information, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou 310007, China; Institute of Traditional Chinese Medicine Literature and Information, Tongde Hospital of Zhejiang Province, Hangzhou 310012, China
| | - A W Zhuang
- Institute of Traditional Chinese Medicine Literature and Information, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou 310007, China; Institute of Traditional Chinese Medicine Literature and Information, Tongde Hospital of Zhejiang Province, Hangzhou 310012, China
| | - S W Sun
- Institute of Traditional Chinese Medicine Literature and Information, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou 310007, China; Institute of Traditional Chinese Medicine Literature and Information, Tongde Hospital of Zhejiang Province, Hangzhou 310012, China
| | - H An
- Institute of Traditional Chinese Medicine Literature and Information, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou 310007, China; Institute of Traditional Chinese Medicine Literature and Information, Tongde Hospital of Zhejiang Province, Hangzhou 310012, China
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17
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Zuo S, Wang K, Li JH, An H, Guo XC, Wang X. [Evaluation of inferior mesenteric vessel and ureter by contrast-enhanced abdominal pelvic CT and its clinical influence on laparoscopic rectal surgery]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:294-299. [PMID: 32192310 DOI: 10.3760/cma.j.cn.441530-20190417-00171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To assess the anatomic relationship of inferior mesenteric artery (IMA)/inferior mesenteric vein (IMV) with ureter by contrast-enhanced abdominal pelvic CT, in order to provide guidance for vascular management and ureteral protection in laparoscopic rectal surgery. Methods: A retrospective cohort study was conducted. Image data of contrast-enhanced abdominal pelvic CT at Department of Medical Radiography of Peking University First Hospital in November 2018 were enrolled. Exclusion criteria: (1) previous history of abdominal or pelvic surgery; (2) scoliosis deformities; (3) missing images; (4) minors; (5) inferior mesenteric vascular disease or tumor involvement resulting in suboptimal imaging; (6) poor image quality. Finally, contrast-enhanced abdominal pelvic CT data of 249 cases were collected, including 120 males and 129 females with mean age of (60.1±13.4) years. Multi-planar reconstruction (MPR) and maximum intensity projection (MIP) were used to evaluate the anatomic relationship of IMA/IMV with ureter. IMA root location, IMA length, branch types of IMA, distance between major branches, distance between IMA/IMV and ureter at the level of root of IMA, left colic artery (LCA) root, abdominal aortic bifurcation, and sacral promontory were measured and association between IMA/IMV and ureter site was summarized. Results: The distance from IMA root to the aortic bifurcation and sacral promontory was (42.0±8.5) mm and (101.8±14.0) mm, respectively. The length of IMA was (38.5±10.7) mm. The proportion of IMA roots locating at levels of the 2nd, 3rd, and 4th lumbar vertebra was 3.2% (8/249), 79.5% (198/249), and 17.3% (43/249), respectively. The higher the level of the lumbar vertebra, the longer the IMA [length of IMA originating from the 2nd, 3rd, 4th lumbar vertebra level: (42.4±10.9) mm, (39.5±10.4) mm, (33.0±10.9) mm, respectively; F=7.48, P<0.001]. In 111 cases (44.6%), LCA arose independently from IMA (type 1), and the distance between LCA and the first branch of sigmoid artery (SA) was (15.0±7.4) mm; in 56 cases (22.5%), LCA and SA had a common trunk (type 2), with a length of (11.0±8.5) mm; in 78 cases (31.3%), LCA branched with SA at the same point (type 3); LCA was absent in 4 cases (1.6%)(type 4). The length of IMA in LCA-deficient type 4 was (54.8±18.0) mm, which was longer than (38.2±10.5) mm in LCA-presence type (type 1, type 2 and type 3) and the difference was statistically significant (t=-3.11, P=0.002). The distance between the ureter and IMA was the longest at the level of IMA root [(35.7±8.1) mm], was the shortest at the level of the aortic bifurcation [(22.4±6.4) mm], and the distance between the ureter and IMA in different planes was significantly different (F=185.70, P<0.001). The distance between the ureter and IMV was the longest at the level of the sacral promontory [(21.1±9.0) mm], was the shortest at the level of LCA root [(12.0±5.7) mm], whose difference was also statistically significant (F=87.66, P<0.001). Conclusions: CT post-processing techniques including MPR and MIP can efficiently and accurately assess the branch types of IMA and anatomical relationship between IMA/IMV and ureter, and provide insights into laparoscopic rectal surgery for surgeons. IMA/IMV and ureter depart farthest at the level of IMA root. Artery first and plane second strategy in the middle approach of laparoscopic rectal surgery is considerable and feasible.
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Affiliation(s)
- S Zuo
- Department of General Surgery, Peking University First Hospital, Beijing 100034, China
| | - K Wang
- Department of Medical Radiography, Peking University First Hospital, Beijing 100034, China
| | - J H Li
- Department of Medical Radiography, Peking University First Hospital, Beijing 100034, China
| | - H An
- Department of General Surgery, Peking University First Hospital, Beijing 100034, China
| | - X C Guo
- Department of Medical Radiography, Peking University First Hospital, Beijing 100034, China
| | - X Wang
- Department of General Surgery, Peking University First Hospital, Beijing 100034, China
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18
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Lin Y, Yin H, An H, Zhou C, Zhou L, Chen S, McGowan E. Chemokine receptor CCR2b expressing anti-Tn-MUC1 CAR-T cells enhanced anti-breast cancer activity. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz448.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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19
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Lin Y, Chen S, Zhong S, An H, Yin H, McGowan E. Phase I clinical trial of PD-1 knockout anti-MUC1 CAR-T cells in the treatment of patients with non-small cell lung cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz448] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Yang YP, Yang S, An H, Liu XP, An N, Guo QW, Ao YF. [Surgical technique and mid-and-long curative effect analysis of primary repair of chronic Achilles tendon rupture]. Zhonghua Wai Ke Za Zhi 2019; 57:57-62. [PMID: 31510734 DOI: 10.3760/cma.j.issn.0529-5815.2019.10.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To examine the surgical method and clinical outcome of primary repair of chronic Achilles tendon rupture. Methods: From March 2012 to August 2017, clinical data of 35 consecutive patients with chronic Achilles tendon rupture who were treated with primary repair by the same doctor at Department of Sports Medicine, Peking University Third Hospital were retrospectively analyzed.There were 29 males and 6 females with age of (41.0±9.3)years(range:29-65 years), the follow-up period was (45.6±17.2) months(range:17-82 months). All the patients had unilateral tendon rupture with 22 cases on the left and 13 cases on the right.The preoperative and postoperative Visual Analogue Scale(VAS), American Orthopaedic Foot and Ankle Society Ankle-Hindfoot Score(AOFAS), the Victorian Institute of Sport Assessment-Achilles(VISA-A), the Achilles tendon Total Rupture Score(ATRS)and the Tegner Activity Score of patients were collected and compared by paired-t test. Results: Among 47 patients with chronic Achilles tendon rupture, 35 patients were followed up for (45.6 ± 17.2)months(range: 17-28 months). No serious postoperative complications such as infection or nerve damage and rerupture outcomes were reported. At the last follow-up,the VAS decreased from 1.0(2.0) (M(Q(R))) preoperative to 0.0(0.8)(Z=-3.586, P=0.00), AOFAS increased from 64.3±12.5 to 97.0±5.0(t=-14.359,P<0.001), VISA-A increased from 51.3± 9.8 to 87.8±18.0(t=- 17.656, P=0.00), Tegner increased from 0.9±0.3 to 4.6±1.7(t=- 12.524, P=0.00)and ATRS increased from 40.0±3.5 to 97.9±3.9(t=-64.133,P=0.00). Twenty-eight patients (80.0%) had returned to their preinjury activity levels, and 7 patients (20.0%) no longer participate in recreational sports. According to Arner-Lindholm curative effect evaluation criteria, 32 cases(91.4%)gained the excellent results, 1 case(2.9%) of good and 2 cases(5.7%) bad, and the percentage of the cases with the excellent or good results was 94.3%. All except 2 patients with bad results could perform a single-limb heel rise painlessly. Conclusions: Primary repair is an efficient approach for chronic Achilles tendon rupture. The mid-and-long curative effect is satisfactory and stable.Compared with other surgical techniques, operation is relatively simple and economical. The primary repair is considerably safe, with few serious complications such as infection or nerve damage and reruptures.
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Affiliation(s)
- Y P Yang
- Department of Sports Medicine, Peking University Third Hospital, Beijing 100191, China
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Hwang J, An H, Yoon S, Park K. P14.27 The significance of multicentric noncontrast-enhancing lesions distant from surgically resected glioblastoma: Case series of 3 patients. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.262] [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: 11/13/2022] Open
Abstract
Abstract
BACKGROUND
Glioblastoma is the most malignant primary brain tumor. The tumor location and multiplicity plays an important role in surgical and further treatment. The incidence of multiple lesions at the time of diagnosis was known as 1–20%, which showed a poor prognostic factor. Most researches has focused on multiple contrast-enhancing lesions, however, multicentric non-enhancing lesions distant from glioblastoma has been rarely evaluated. The authors reported the case series of the patient who showed multicentric non contrast-enhancing lesions without connection to histologically-proven glioblastoma.
MATERIAL AND METHODS
Multicentric non contrast-enhancing lesions were defined as areas of FLAIR hyperintensity and mass effect without post-contrast enhancement, separated from the histologically-proven glioblastoma in a newly diagnosed disease. Three patients who showed distant non-enhancing lesions with appearance of a multicentric low-grade glioma were included in this study. The typical enhancing lesions were surgically resected and standard chemo-radiotherapy was followed in all patients.
RESULTS
All patients were male and their age was 38, 60 and 65 years old respectively. Multicentric tumor location was as follows: Case 1, left frontal lobe with non-enhancing lesion in left parahippocampal gyrus; Case 2, left parietal with non-enhancing lesion in left anteromedial temporal lobe; Case 3, left thalamus with non-enhancing lesions in both basal frontal and right temporal lobe. Pathologically, the resected enhancing tumor revealed glioblastoma in 2 patients and diffuse midline glioma in 1. All tumors were IDH-wild type. The resected enhanced lesion showed no progression but all non-enhancing lesions developed contrast-enhancing tumors at 3, 13 and 17 months after initial treatment, with high tracer uptake on 18FDG-PET or 18FDOPA-PET. Despite multidisciplinary treatment, two patients died from disease progression at 30 and 32 months after diagnosis and one patient is still alive with overall survival of 15 months.
CONCLUSION
The appearance of multicentric non-enhancing lesions distant from a typically enhancing tumor showed an uncommon finding in glioblastoma and poor prognostic features. These lesions progress faster than expected for a low-grade glioma. These lesions should be distinguished from typical low-grade glioma and should be considered more advanced lesions than their appearances suggest.
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Affiliation(s)
- J Hwang
- Dept of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea, Republic of
| | - H An
- Dept of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea, Republic of
| | - S Yoon
- Dept of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea, Republic of
| | - K Park
- Dept of Neurosurgery, Kyungpook National University Chilgok Hospital, Daegu, Korea, Republic of
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Yan J, Yu XJ, Pei XY, Zhang JF, Wu XM, Li X, An H, Bai J. [Contamination and pathogenicity analysis of listeria monocytogenes in restaurant in Heilongjiang Province]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:298-302. [PMID: 30841671 DOI: 10.3760/cma.j.issn.0253-9624.2019.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the contamination, serotype, pulsed field gel electrophoresis (PFGE) and drug resistance of listeria monocytogenes (L.monocytogenes) in the process of restaurant kitchens in Heilongjiang Province. Methods: Seventeen typical restaurants were selected from three cities in Heilongjiang Province in 2016, and 590 kitchen samples were collected and tested according to the national standard method. The serotype, pulsed field gel electrophoresis (PFGE) and drug resistance of isolated strains were analyzed. Results: L. monocytogenes was found in 104 of 590 of the samples analysed (17.63%). The isolates belong to six serotypes (1/2 a, 1/2 b, 1/2c, 3a, 3 b, 4 b) and self-condensing bacteria, and 57.38% (70 strains) of the strains belong to serotype 1/2b. Two highly pathogenic serotype 4b was detected for human listeria disease. The results of PFGE analysis show that the bacteria have cross-contamination in the environment, tools, equipment, food and personnel. The drug resistance results showed that 2 strains were resistant to tetracycline, 1 strain was resistant to erythromycin, 13 strains were intermediate to tetracycline, and 2 strains were resistant to tetracycline and erythromycin. Conclusion: There is a certain degree of L. monocytogenes cross-contamination in the catering kitchen in Heilongjiang Province. And an important serotype 4b that can cause human Listeria disease was detected.
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Affiliation(s)
- J Yan
- Institute for Communicable Disease Control and Prevention, Heilongjiang Provincial Center for Disease Prevention and Control, Harbin 150030, China
| | - X J Yu
- Institute for Communicable Disease Control and Prevention, Heilongjiang Provincial Center for Disease Prevention and Control, Harbin 150030, China
| | - X Y Pei
- Division Ⅰ of Risk Surveillance, China National Center for Food Safety Risk assessment, Beijing 100022, China
| | - J F Zhang
- Institute for Communicable Disease Control and Prevention, Heilongjiang Provincial Center for Disease Prevention and Control, Harbin 150030, China
| | - X M Wu
- Institute for Communicable Disease Control and Prevention, Jiamusi Center for Disease Prevention and Control, Jiamusi 154000, China
| | - X Li
- Institute for Communicable Disease Control and Prevention, Heilongjiang Provincial Center for Disease Prevention and Control, Harbin 150030, China
| | - H An
- Institute for Communicable Disease Control and Prevention, Heilongjiang Provincial Center for Disease Prevention and Control, Harbin 150030, China
| | - J Bai
- Institute for Communicable Disease Control and Prevention, Heilongjiang Provincial Center for Disease Prevention and Control, Harbin 150030, China
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Chen S, Lin Y, Zhong S, An H, Lu Y, Yin M, Liang W, McGowan E. Anti-MUC1 CAR-T cells combined with PD-1 knockout engineered T cells for patients with non-small cell lung cancer (NSCLC): A pilot study. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy485.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lee HA, Cho EY, Kim TH, Lee Y, Suh SJ, Jung YK, Kim JH, An H, Seo YS, Kim DS, Yim HJ, Yeon JE, Byun KS, Um SH. Risk Factors for Dropout From the Liver Transplant Waiting List of Hepatocellular Carcinoma Patients Under Locoregional Treatment. Transplant Proc 2018; 50:3521-3526. [PMID: 30577230 DOI: 10.1016/j.transproceed.2018.08.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 08/29/2018] [Indexed: 12/23/2022]
Abstract
BACKGROUND In new organ allocation policy, patients with hepatocellular carcinoma (HCC) experience a 6-month delay in being granted Model for End-Stage Liver Disease exception points. However, it may not be fair for patients at risk of early progression of HCC. METHODS All patients who were diagnosed as United Network for Organ Sharing (UNOS) stage 1 or 2 of HCC between January 2004 and December 2012 were included. Patients who received surgical resection or liver transplant (LT) as a primary treatment and who did not receive any treatment for HCC were excluded. Patients with baseline Model for End-Stage Liver Disease score ≥22 were also excluded because they have a higher chance of receiving LT. Patients who developed extrahepatic progression within 1 year were considered as high-risk for early recurrence after LT. RESULTS A total of 586 patients were included. Mean (SD) age was 59.9 (10.3) years and 409 patients (69.8%) were men. The cumulative incidence of estimated dropout was 8.9% at 6 months; size of the maximum nodule (≥3 cm) and nonachievement of complete response were independent factors. Extrahepatic progression developed in 16 patients (2.7%) within 1 year; size of the maximum nodule (4 cm) and alpha-fetoprotein level (>100 ng/mL) were independent predictors. CONCLUSIONS The estimated dropout rate from the waiting list within 6 months was 8.9%. Advantage points might be needed for patients with maximum nodule size ≥3 cm or those with noncomplete response. However, in patients with maximum nodule size ≥4 cm or alpha-fetoprotein level >100 ng/mL, caution is needed.
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Affiliation(s)
- H A Lee
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - E Y Cho
- Department of Biostatistics, Korea University College of Medicine, Seoul, Korea
| | - T H Kim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Y Lee
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - S J Suh
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Y K Jung
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - J H Kim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - H An
- Department of Biostatistics, Korea University College of Medicine, Seoul, Korea
| | - Y S Seo
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
| | - D-S Kim
- Department of Surgery, Korea University College of Medicine, Seoul, Korea
| | - H J Yim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea.
| | - J E Yeon
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - K S Byun
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - S H Um
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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Kim K, An H, Lee S, Seo J, Lim J. LB1597 Palmitoyl-KVK-L-ascorbic acid inhibits melanogenesis in B16F1 cells through the down-regulation of tyrosinase and MITF. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.06.136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chiu KWH, Lam KO, An H, Cheung GTC, Lau JKS, Choy TS, Lee VHF. Long-term outcomes and recurrence pattern of 18F-FDG PET-CT complete metabolic response in the first-line treatment of metastatic colorectal cancer: a lesion-based and patient-based analysis. BMC Cancer 2018; 18:776. [PMID: 30064385 PMCID: PMC6069713 DOI: 10.1186/s12885-018-4687-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 07/22/2018] [Indexed: 12/22/2022] Open
Abstract
Background 18F-FDG PET-CT is commonly used to monitor treatment response in patients with metastatic colorectal cancer (mCRC). With improvement in systemic therapy, complete metabolic response (CMR) is increasingly encountered but its clinical significance is undefined. The study examined the long-term outcomes and recurrence patterns in these patients. Methods Consecutive patients with mCRC who achieved CMR on PET-CT during first-line systemic therapy were retrospectively analysed. Measurable and non-measurable lesions identified on baseline PET-CT were compared with Response Criteria in Solid Tumors (RECIST) on CT on a per-lesion basis. Progression free (PFS) and Overall Survival (OS) were compared with clinical parameters and treatment characteristics on a per-patient basis. Results Between 2008 and 2011, 40 patients with 192 serial PET-CT scans were eligible for analysis involving 44 measurable and 38 non-measurable lesions in 59 metastatic sites. On a per-lesion basis, 46% also achieved Complete Response (CR) on RECIST criteria and sustained CMR was more frequent in these lesions (OR 1.727, p = 0.0031). Progressive metabolic disease (PMD) was seen in 12% of lesions, with liver metastasis the most common. Receiver operating characteristics (ROC) curve analysis revealed the optimal value of SUVmax for predicting PMD of a lesion was 4.4 (AUC 0.734, p = 0.004). On a per-patient basis, 14 patients achieved sustained CMR and their outcomes were better than those with PMD (median OS not reached vs 37.7 months p = 0.0001). No statistical difference was seen in OS between patients who achieved PR or CR (median OS 51.4 vs 44.2 months p = 0.766). Conclusion Our results provided additional information of long-term outcomes and recurrence patterns of patients with mCRC after achieving CMR. They had improved survival and sustained CMR using systemic therapy alone is possible. Discordance between morphological and metabolic response was consistent with reported literature but in the presence of CMR the two groups had comparable outcomes.
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Affiliation(s)
- Keith W H Chiu
- Department of Diagnostic Radiology, LKS Faculty of Medicine, The University of Hong Kong, 102, Pokfulam Raod, Hong Kong, China
| | - Ka-On Lam
- Department of Clinical Oncology, LKS Faculty of Medicine, The University of Hong Kong, 1/F Professorial Block, 102, Pokfulam Raod, Hong Kong, China. .,Clinical Oncology Center, The University of Hong Kong-Shenzhen Hospital, 102, Pokfulam Raod, Hong Kong, China.
| | - H An
- Department of Diagnostic Radiology, LKS Faculty of Medicine, The University of Hong Kong, 102, Pokfulam Raod, Hong Kong, China
| | - Gavin T C Cheung
- Department of Clinical Oncology, Queen Elizabeth Hospital, 30 Gascoigne Raod, Hong Kong, China
| | - Johnny K S Lau
- Department of Clinical Oncology, Queen Mary Hospital, 1/F Professorial Block, 102, Pokfulam Raod, Hong Kong, China
| | - Tim-Shing Choy
- Department of Clinical Oncology, Queen Mary Hospital, 1/F Professorial Block, 102, Pokfulam Raod, Hong Kong, China
| | - Victor H F Lee
- Department of Clinical Oncology, LKS Faculty of Medicine, The University of Hong Kong, 1/F Professorial Block, 102, Pokfulam Raod, Hong Kong, China.,Clinical Oncology Center, The University of Hong Kong-Shenzhen Hospital, 102, Pokfulam Raod, Hong Kong, China
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An H, Lee E, Chiu K, Chang C. The emerging roles of functional imaging in ovarian cancer with peritoneal carcinomatosis. Clin Radiol 2018; 73:597-609. [DOI: 10.1016/j.crad.2018.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 03/09/2018] [Indexed: 12/22/2022]
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Manaka D, Nishitai R, Konishi S, Ota T, Nishikawa Y, Kudo R, Kawaguchi K, An H, Hamasu S. Analysis of clinical outcomes of two antiEGFR antibodies, cetuximab and panitumumab, in the 1st line chemotherapy of RAS wild metastatic colorectal cancer, by neutrophil-to-lymphocyte ratio (NLR) kinetics. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.223] [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: 11/13/2022] Open
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29
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Konishi S, Manaka D, An H, Nishikawa Y, Ota T, Kudo R, Kawaguchi K, Hamasu S, Nishitai R. Early outcomes of a pilot study of neoadjuvant chemotherapy with S-1 plus oxaliplatin at dose of 130mg/m2 (nacG-SOX130) in stage III gastric cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.063] [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: 11/14/2022] Open
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30
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Kawaguchi K, Nishitai R, Manaka D, Ota T, Nishikawa Y, Kudo R, An H, Hamasu S, Konishi S. A phase II study of dose-escalation of regorafenib for patients with previously treated metastatic colorectal cancer – DEREGULATE study - Trial in progress. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy151.291] [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: 11/13/2022] Open
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31
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Byun J, An H, Yeom S, Choi G. 127 NDRG1 regulates proliferation of endothelial cells of infantile hemangioma. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.132] [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: 10/17/2022]
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32
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Woo J, Kim JE, Im JJ, Lee J, Jeong HS, Park S, Jung SY, An H, Yoon S, Lim SM, Lee S, Ma J, Shin EY, Han YE, Kim B, Lee EH, Feng L, Chun H, Yoon BE, Kang I, Dager SR, Lyoo IK, Lee CJ. Astrocytic water channel aquaporin-4 modulates brain plasticity in both mice and humans: a potential gliogenetic mechanism underlying language-associated learning. Mol Psychiatry 2018; 23:1021-1030. [PMID: 29565042 DOI: 10.1038/mp.2017.113] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [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] [Received: 09/07/2016] [Revised: 03/21/2017] [Accepted: 04/17/2017] [Indexed: 01/04/2023]
Abstract
The role of astrocytes in brain plasticity has not been extensively studied compared with that of neurons. Here we adopted integrative translational and reverse-translational approaches to explore the role of an astrocyte-specific major water channel in the brain, aquaporin-4 (AQP4), in brain plasticity and learning. We initially identified the most prevalent genetic variant of AQP4 (single nucleotide polymorphism of rs162008 with C or T variation, which has a minor allele frequency of 0.21) from a human database (n=60 706) and examined its functionality in modulating the expression level of AQP4 in an in vitro luciferase reporter assay. In the following experiments, AQP4 knock-down in mice not only impaired hippocampal volumetric plasticity after exposure to enriched environment but also caused loss of long-term potentiation after theta-burst stimulation. In humans, there was a cross-sectional association of rs162008 with gray matter (GM) volume variation in cortices, including the vicinity of the Perisylvian heteromodal language area (Sample 1, n=650). GM volume variation in these brain regions was positively associated with the semantic verbal fluency. In a prospective follow-up study (Sample 2, n=45), the effects of an intensive 5-week foreign language (English) learning experience on regional GM volume increase were modulated by this AQP4 variant, which was also associated with verbal learning capacity change. We then delineated in mice mechanisms that included AQP4-dependent transient astrocytic volume changes and astrocytic structural elaboration. We believe our study provides the first integrative evidence for a gliogenetic basis that involves AQP4, underlying language-associated brain plasticity.
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Affiliation(s)
- J Woo
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - J E Kim
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - J J Im
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - J Lee
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - H S Jeong
- Department of Radiology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S Park
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - S-Y Jung
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - H An
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Department of Radiology, University of Washington, Seattle, WA, USA.,Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - S Yoon
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - S M Lim
- Department of Radiology, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - S Lee
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - J Ma
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - E Y Shin
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - Y-E Han
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - B Kim
- Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Interdisciplinary Program in Neuroscience, College of Natural Sciences, Seoul National University, Seoul, Republic of Korea
| | - E H Lee
- Green Cross Laboratories, Yongin, Republic of Korea
| | - L Feng
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - H Chun
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - B-E Yoon
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Department of Nanobiomedical Science, Dankook University, Cheonan, Republic of Korea
| | - I Kang
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea
| | - S R Dager
- Department of Radiology, University of Washington, Seattle, WA, USA.,Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - I K Lyoo
- Department of Brain and Cognitive Sciences, Scranton College, Ewha Womans University, Seoul, Republic of Korea.,Ewha Brain Institute, Ewha Womans University, Seoul, Republic of Korea.,Graduate School of Pharmaceutical Sciences, Ewha Womans University, Seoul, Republic of Korea
| | - C J Lee
- Center for Neural Science and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.,Neuroscience Program, University of Science and Technology (UST), Daejeon, Republic of Korea.,KU-KIST, Graduate School of Convergence Technology, Korea University, Seoul, Republic of Korea
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Qiang Y, Xu J, Yan C, Jin H, Xiao T, Yan N, Zhou L, An H, Zhou X, Shao Q, Xia S. Butyrate and retinoic acid imprint mucosal-like dendritic cell development synergistically from bone marrow cells. Clin Exp Immunol 2017; 189:290-297. [PMID: 28542882 DOI: 10.1111/cei.12990] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 05/16/2017] [Indexed: 12/27/2022] Open
Abstract
Accumulating data show that the phenotypes and functions of distinctive mucosal dendritic cells (DCs) in the gut are regulated by retinoic acid (RA). Unfortunately, the exact role of butyrate in RA-mediated mucosal DC differentiation has not been elucidated thoroughly to date. Mucosal-like dendritic cell differentiation was completed in vitro by culturing bone marrow cells with growth factors [granulocyte-macrophage colony-stimulating factor (GM-CSF/interleukin (IL)-4], RA and/or butyrate. The phenotypes, cytokine secretion, immune functions and levels of retinal dehydrogenase of different DCs were detected using quantitative polymerase chain reaction (qPCR), enzyme-linked immunosorbent assay (ELISA) and flow cytometry, respectively. The results showed that RA-induced DCs (RA-DCs) showed mucosal DC properties, including expression of CD103 and gut homing receptor α4 β7 , low proinflammatory cytokine secretion and low priming capability to antigen-specific CD4+ T cells. Butyrate-treated RA-DCs (Bu-RA-DCs) decreased CD11c, but increased CD103 and α4 β7 expression. Moreover, the CD4+ T priming capability and the levels of retinal dehydrogenase of RA-DCs were suppressed significantly by butyrate. Thus, butyrate and retinoic acid have different but synergistic regulatory functions on mucosal DC differentiation, indicating that immune homeostasis in the gut depends largely upon RA and butyrate to imprint different mucosal DC subsets, both individually and collectively.
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Affiliation(s)
- Y Qiang
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Clinic Laboratory Diagnosis, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Department of Clinical Laboratory, the Second People's Hospital of Changzhou Affiliated to Nanjing Medical University, Changzhou, Jiangsu, China
| | - J Xu
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Clinic Laboratory Diagnosis, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - C Yan
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Clinic Laboratory Diagnosis, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - H Jin
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Clinic Laboratory Diagnosis, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - T Xiao
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Clinic Laboratory Diagnosis, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - N Yan
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Clinic Laboratory Diagnosis, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - L Zhou
- Institute of Clinic Laboratory Diagnosis, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - H An
- Cancer Institute, Institute of Translational Medicine, Second Military Medical University, Shanghai, China
| | - X Zhou
- Department of Pathology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - Q Shao
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Clinic Laboratory Diagnosis, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
| | - S Xia
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China.,Institute of Clinic Laboratory Diagnosis, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu, China
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Choi Y, Jiang F, An H, Park HJ, Choi JH, Lee H. A pharmacogenomic study on the pharmacokinetics of tacrolimus in healthy subjects using the DMETTM Plus platform. Pharmacogenomics J 2016; 17:105-106. [PMID: 27958377 DOI: 10.1038/tpj.2016.85] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Ayensa M, An H, Gómez-Guillén M, Montero P, Borderías A. Partial protease activity characterization of squid (Todaropsis eblanae) mantle / Caracterización parcial de la actividad proteolítica del manto de pota (Todaropsis eblanae). FOOD SCI TECHNOL INT 2016. [DOI: 10.1177/108201329900500504] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Proteolytic activity in mantle of Todaropsis eblanae was maximum at 40 and 65 °C. Several peaks of activity were detected over the pH range studied (1.5-9.5), indicating the presence of acidic, neutral and alkaline proteases, depending on the temperature. The substantial enzymic inhibition at acidic pH by the inhibitor trans-epoxysuccinyl-L-leucylamine-4-guanidine butane (E-64) revealed the pre dominance of lysosomal cysteine proteases (cathepsins) which showed higher activity at 65 °C than at 40 °C. At 65 °C and pH 5.5 metallo-proteases were also detected by the inhibition with phenanthroline. Serine protease activity predominated at neutral pH (higher at 40 °C than at 65 °C), and cysteine proteases were detected at alkaline pH. There was evidence of cathepsin B and L activity at 65 °C and to a lesser degree at 40 °C.
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Affiliation(s)
- M.G. Ayensa
- Instituto del Frío (CSIC) Ciudad Universitaria s/n, 28040 Madrid, Spain
| | - H. An
- Oregon State University-Seafood Laboratory, 2001 Marine Dr, RM 253, Astoria, OR 97103-3427, USA
| | | | - P. Montero
- Instituto del Frío (CSIC) Ciudad Universitaria s/n, 28040 Madrid, Spain
| | - A.J. Borderías
- Instituto del Frío (CSIC) Ciudad Universitaria s/n, 28040 Madrid, Spain
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An H, Marron JS, Schwartz TA, Renner JB, Liu F, Lynch JA, Lane NE, Jordan JM, Nelson AE. Novel statistical methodology reveals that hip shape is associated with incident radiographic hip osteoarthritis among African American women. Osteoarthritis Cartilage 2016; 24:640-6. [PMID: 26620089 PMCID: PMC4799754 DOI: 10.1016/j.joca.2015.11.013] [Citation(s) in RCA: 20] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2015] [Revised: 10/17/2015] [Accepted: 11/17/2015] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Hip shape is a risk factor for the development of hip osteoarthritis (OA), and current methods to assess hip shape from radiographs are limited; therefore this study explored current and novel methods to assess hip shape. METHODS Data from a prior case-control study nested in the Johnston County OA Project were used, including 382 hips (from 342 individuals). Hips were classified by radiographic hip OA (RHOA) status as RHOA cases (baseline Kellgren Lawrence grade [KLG] 0 or 1, follow-up [mean 6 years] KLG ≥ 2) or controls (KLG = 0 or 1 at both baseline and follow-up). Proximal femur shape was assessed using a 60-point model as previously described. The current analysis explored commonly used principal component analysis (PCA), as well as novel statistical methodologies suited to high dimension low sample size settings (Distance Weighted Discrimination [DWD] and Distance Projection Permutation [DiProPerm] hypothesis testing) to assess differences between cases and controls. RESULTS Using these novel methodologies, we were able to better characterize morphologic differences by sex and race. In particular, the proximal femurs of African American women demonstrated significantly different shapes between cases and controls, implying an important role for sex and race in the development of RHOA. Notably, discrimination was improved with the use of DWD and DiProPerm compared to PCA. CONCLUSIONS DWD with DiProPerm significance testing provides improved discrimination of variation in hip morphology between groups, and enables subgroup analyses even under small sample sizes.
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Affiliation(s)
- H An
- Department of Statistics and Operations Research, University of North Carolina, Hanes Hall CB 3260, Chapel Hill, NC 27599, USA.
| | - J S Marron
- Department of Statistics and Operations Research, University of North Carolina, Hanes Hall CB 3260, Chapel Hill, NC 27599, USA.
| | - T A Schwartz
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina, 3106E McGavran-Greenberg Hall CB 7420, Chapel Hill, NC 27599, USA.
| | - J B Renner
- Department of Radiology, University of North Carolina, 509 Old Infirmary Bldg CB 7510, Chapel Hill, NC 27599, USA; Thurston Arthritis Research Center, University of North Carolina, 3300 Thurston Building CB 7280, Chapel Hill, NC 27599, USA.
| | - F Liu
- University of California at San Francisco, Mission Hall: Global Health & Clinical Sciences Bldg, 550 16th St, 2nd Floor, San Francisco, CA 94158-2549, USA.
| | - J A Lynch
- University of California at San Francisco, Mission Hall: Global Health & Clinical Sciences Bldg, 550 16th St, 2nd Floor, San Francisco, CA 94158-2549, USA.
| | - N E Lane
- University of California Davis School of Medicine, 451 Health Sciences Dr, Davis, CA 95616, USA.
| | - J M Jordan
- Thurston Arthritis Research Center, University of North Carolina, 3300 Thurston Building CB 7280, Chapel Hill, NC 27599, USA.
| | - A E Nelson
- Thurston Arthritis Research Center, University of North Carolina, 3300 Thurston Building CB 7280, Chapel Hill, NC 27599, USA.
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Choi Y, Jiang F, An H, Park HJ, Choi JH, Lee H. A pharmacogenomic study on the pharmacokinetics of tacrolimus in healthy subjects using the DMETTM Plus platform. Pharmacogenomics J 2016; 17:174-179. [DOI: 10.1038/tpj.2015.99] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 11/22/2015] [Accepted: 11/26/2015] [Indexed: 12/29/2022]
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Kim S, Kim P, Lim J, An H, Suuronen P. Use of biodegradable driftnets to prevent ghost fishing: physical properties and fishing performance for yellow croaker. Anim Conserv 2016. [DOI: 10.1111/acv.12256] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- S. Kim
- Fisheries Engineering Research Division; National Institute of Fisheries Science; Busan Korea
| | - P. Kim
- Fisheries Engineering Research Division; National Institute of Fisheries Science; Busan Korea
| | - J. Lim
- Fisheries Engineering Research Division; National Institute of Fisheries Science; Busan Korea
| | - H. An
- Fisheries Engineering Research Division; National Institute of Fisheries Science; Busan Korea
| | - P. Suuronen
- Food and Agriculture Organization of the United Nations; Fishing Operations and Technology Branch (FIRO); Rome Italy
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An H, Chung J, Yu K, Jang I. Joint bio-equivalence tests with multivariate Gaussian random effects. Clin Ther 2015. [DOI: 10.1016/j.clinthera.2015.05.250] [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: 10/23/2022]
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40
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Chang Y, An H, Xu L, Zhu Y, Yang Y, Lin Z, Xu J. Systemic inflammation score predicts postoperative prognosis of patients with clear-cell renal cell carcinoma. Br J Cancer 2015; 113:626-33. [PMID: 26135896 PMCID: PMC4647686 DOI: 10.1038/bjc.2015.241] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [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: 04/03/2015] [Revised: 05/18/2015] [Accepted: 06/09/2015] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Growing evidence indicates that inflammation has a crucial role in the development and progression of cancer. We developed a novel systemic inflammation score (SIS) based on preoperative serum albumin and lymphocyte-to-monocyte ratio (LMR), and examined its prognostic value for patients with clear-cell renal cell carcinoma (ccRCC) after surgery. METHODS The study comprised 441 ccRCC patients undergoing nephrectomy between 2008 and 2009 in a single centre. The SIS was developed and its associations with clinicopathological features and overall survival (OS) were evaluated. RESULTS The SIS consisted of serum albumin and LMR that were both retained as independent indicators adjusting for other haematological and laboratory markers of systemic inflammation responses and traditional clinicopathological features. A high SIS was significantly associated with aggressive tumour behaviours and served as an independent prognostic factor of reduced OS. Furthermore, the SIS could significantly stratify patient prognosis in different tumour stages and Mayo Clinic stage, size, grade and necrosis scores. Incorporation of the SIS into a prognostic model including TNM stage, Fuhrman grade and lymphovascular invasion generated a nomogram, which predicted accurately 3- and 5-year survival for ccRCC patients. CONCLUSIONS The SIS as a potentially powerful prognostic biomarker might improve traditional clinicopathological analysis to refine clinical outcome prediction for ccRCC patients after surgery.
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Affiliation(s)
- Y Chang
- Department of Urology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, China
| | - H An
- Department of Urology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, China
| | - L Xu
- Department of Urology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, China
| | - Y Zhu
- Department of Urology, Shanghai Cancer Center, Fudan University, Shanghai, China
| | - Y Yang
- Department of Urology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, China
| | - Z Lin
- Department of Urology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai, China
| | - J Xu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Shanghai Medical College of Fudan University, Fudan University, Mailbox 103, 138 Yixueyuan Road, Shanghai, China
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41
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Boggs SE, Harrison FA, Miyasaka H, Grefenstette BW, Zoglauer A, Fryer CL, Reynolds SP, Alexander DM, An H, Barret D, Christensen FE, Craig WW, Forster K, Giommi P, Hailey CJ, Hornstrup A, Kitaguchi T, Koglin JE, Madsen KK, Mao PH, Mori K, Perri M, Pivovaroff MJ, Puccetti S, Rana V, Stern D, Westergaard NJ, Zhang WW. 44
Ti gamma-ray emission lines from SN1987A reveal an asymmetric explosion. Science 2015; 348:670-1. [DOI: 10.1126/science.aaa2259] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- S. E. Boggs
- Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA
| | - F. A. Harrison
- Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
| | - H. Miyasaka
- Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
| | - B. W. Grefenstette
- Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
| | - A. Zoglauer
- Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA
| | - C. L. Fryer
- CCS-2, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - S. P. Reynolds
- Physics Department, NC State University, Raleigh, NC 27695, USA
| | - D. M. Alexander
- Department of Physics, Durham University, Durham DH1 3LE, UK
| | - H. An
- Department of Physics, McGill University, Rutherford Physics Building, Montreal, Quebec H3A 2T8, Canada
| | - D. Barret
- Université de Toulouse, UPS-OMP, IRAP, Toulouse, France
- CNRS, Institut de Recherche en Astrophysique et Planétologie, 9 Av. colonel Roche, BP 44346, F-31028 Toulouse Cedex 4, France
| | - F. E. Christensen
- DTU Space, National Space Institute, Technical University of Denmark, Elektrovej 327, DK-2800 Lyngby, Denmark
| | - W. W. Craig
- Space Sciences Laboratory, University of California, Berkeley, CA 94720, USA
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - K. Forster
- Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
| | - P. Giommi
- Agenzia Spaziale Italiana (ASI) Science Data Center, Via del Politecnico snc I-00133, Roma, Italy
| | - C. J. Hailey
- Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027, USA
| | - A. Hornstrup
- DTU Space, National Space Institute, Technical University of Denmark, Elektrovej 327, DK-2800 Lyngby, Denmark
| | - T. Kitaguchi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - J. E. Koglin
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA
| | - K. K. Madsen
- Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
| | - P. H. Mao
- Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
| | - K. Mori
- Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027, USA
| | - M. Perri
- Agenzia Spaziale Italiana (ASI) Science Data Center, Via del Politecnico snc I-00133, Roma, Italy
- INAF – Osservatorio Astronomico di Roma, via di Frascati 33, I-00040 Monteporzio, Italy
| | - M. J. Pivovaroff
- Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - S. Puccetti
- Agenzia Spaziale Italiana (ASI) Science Data Center, Via del Politecnico snc I-00133, Roma, Italy
- INAF – Osservatorio Astronomico di Roma, via di Frascati 33, I-00040 Monteporzio, Italy
| | - V. Rana
- Cahill Center for Astronomy and Astrophysics, California Institute of Technology, Pasadena, CA 91125, USA
| | - D. Stern
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
| | - N. J. Westergaard
- DTU Space, National Space Institute, Technical University of Denmark, Elektrovej 327, DK-2800 Lyngby, Denmark
| | - W. W. Zhang
- NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
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Grefenstette BW, Harrison FA, Boggs SE, Reynolds SP, Fryer CL, Madsen KK, Wik DR, Zoglauer A, Ellinger CI, Alexander DM, An H, Barret D, Christensen FE, Craig WW, Forster K, Giommi P, Hailey CJ, Hornstrup A, Kaspi VM, Kitaguchi T, Koglin JE, Mao PH, Miyasaka H, Mori K, Perri M, Pivovaroff MJ, Puccetti S, Rana V, Stern D, Westergaard NJ, Zhang WW. Asymmetries in core-collapse supernovae from maps of radioactive 44Ti in Cassiopeia A. Nature 2014; 506:339-42. [PMID: 24553239 DOI: 10.1038/nature12997] [Citation(s) in RCA: 180] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 12/13/2013] [Indexed: 11/09/2022]
Abstract
Asymmetry is required by most numerical simulations of stellar core-collapse explosions, but the form it takes differs significantly among models. The spatial distribution of radioactive (44)Ti, synthesized in an exploding star near the boundary between material falling back onto the collapsing core and that ejected into the surrounding medium, directly probes the explosion asymmetries. Cassiopeia A is a young, nearby, core-collapse remnant from which (44)Ti emission has previously been detected but not imaged. Asymmetries in the explosion have been indirectly inferred from a high ratio of observed (44)Ti emission to estimated (56)Ni emission, from optical light echoes, and from jet-like features seen in the X-ray and optical ejecta. Here we report spatial maps and spectral properties of the (44)Ti in Cassiopeia A. This may explain the unexpected lack of correlation between the (44)Ti and iron X-ray emission, the latter being visible only in shock-heated material. The observed spatial distribution rules out symmetric explosions even with a high level of convective mixing, as well as highly asymmetric bipolar explosions resulting from a fast-rotating progenitor. Instead, these observations provide strong evidence for the development of low-mode convective instabilities in core-collapse supernovae.
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Affiliation(s)
- B W Grefenstette
- Cahill Center for Astrophysics, 1216 East California Boulevard, California Institute of Technology, Pasadena, California 91125, USA
| | - F A Harrison
- Cahill Center for Astrophysics, 1216 East California Boulevard, California Institute of Technology, Pasadena, California 91125, USA
| | - S E Boggs
- Space Sciences Laboratory, University of California, Berkeley, California 94720, USA
| | - S P Reynolds
- Physics Department, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - C L Fryer
- CCS-2, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - K K Madsen
- Cahill Center for Astrophysics, 1216 East California Boulevard, California Institute of Technology, Pasadena, California 91125, USA
| | - D R Wik
- NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
| | - A Zoglauer
- Space Sciences Laboratory, University of California, Berkeley, California 94720, USA
| | - C I Ellinger
- Department of Physics, University of Texas at Arlington, Arlington, Texas 76019, USA
| | - D M Alexander
- Department of Physics, Durham University, Durham DH1 3LE, UK
| | - H An
- Department of Physics, McGill University, Rutherford Physics Building, Montreal, Quebec H3A 2T8, Canada
| | - D Barret
- 1] Université de Toulouse, UPS-OMP, IRAP, 9 Avenue du Colonel Roche, BP 44346, 31028 Toulouse Cedex 4, France [2] CNRS, Institut de Recherche en Astrophysique et Planétologie, 9 Avenue colonel Roche, BP 44346, F-31028 Toulouse Cedex 4, France
| | - F E Christensen
- DTU Space, National Space Institute, Technical University of Denmark, Elektrovej 327, DK-2800 Lyngby, Denmark
| | - W W Craig
- 1] Space Sciences Laboratory, University of California, Berkeley, California 94720, USA [2] Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - K Forster
- Cahill Center for Astrophysics, 1216 East California Boulevard, California Institute of Technology, Pasadena, California 91125, USA
| | - P Giommi
- Agenzia Spaziale Italiana (ASI) Science Data Center, Via del Politecnico snc, I-00133 Roma, Italy
| | - C J Hailey
- Columbia Astrophysics Laboratory, Columbia University, New York, New York 10027, USA
| | - A Hornstrup
- DTU Space, National Space Institute, Technical University of Denmark, Elektrovej 327, DK-2800 Lyngby, Denmark
| | - V M Kaspi
- Department of Physics, McGill University, Rutherford Physics Building, Montreal, Quebec H3A 2T8, Canada
| | - T Kitaguchi
- RIKEN, Nishina Center, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - J E Koglin
- Kavli Institute for Particle Astrophysics and Cosmology, SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - P H Mao
- Cahill Center for Astrophysics, 1216 East California Boulevard, California Institute of Technology, Pasadena, California 91125, USA
| | - H Miyasaka
- Cahill Center for Astrophysics, 1216 East California Boulevard, California Institute of Technology, Pasadena, California 91125, USA
| | - K Mori
- Columbia Astrophysics Laboratory, Columbia University, New York, New York 10027, USA
| | - M Perri
- 1] Agenzia Spaziale Italiana (ASI) Science Data Center, Via del Politecnico snc, I-00133 Roma, Italy [2] INAF - Osservatorio Astronomico di Roma, via di Frascati 33, I-00040 Monteporzio, Italy
| | - M J Pivovaroff
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - S Puccetti
- 1] Agenzia Spaziale Italiana (ASI) Science Data Center, Via del Politecnico snc, I-00133 Roma, Italy [2] INAF - Osservatorio Astronomico di Roma, via di Frascati 33, I-00040 Monteporzio, Italy
| | - V Rana
- Cahill Center for Astrophysics, 1216 East California Boulevard, California Institute of Technology, Pasadena, California 91125, USA
| | - D Stern
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA
| | - N J Westergaard
- DTU Space, National Space Institute, Technical University of Denmark, Elektrovej 327, DK-2800 Lyngby, Denmark
| | - W W Zhang
- NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA
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Lu X, An H, Jin R, Zou M, Guo Y, Su PF, Liu D, Shyr Y, Yarbrough WG. PPM1A is a RelA phosphatase with tumor suppressor-like activity. Oncogene 2013; 33:2918-27. [PMID: 23812431 DOI: 10.1038/onc.2013.246] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 05/06/2013] [Accepted: 05/20/2013] [Indexed: 12/28/2022]
Abstract
Nuclear factor-κB (NF-κB) signaling contributes to human disease processes, notably inflammatory diseases and cancer. NF-κB has a role in tumorigenesis and tumor growth, as well as promotion of metastases. Mechanisms responsible for abnormal NF-κB activation are not fully elucidated; however, RelA phosphorylation, particularly at serine residues S536 and S276, is critical for RelA function. Kinases that phosphorylate RelA promote oncogenic behaviors, suggesting that phosphatases targeting RelA could have tumor-inhibiting activities; however, few RelA phosphatases have been identified. Here, we identified tumor inhibitory and RelA phosphatase activities of the protein phosphatase 2C (PP2C) phosphatase family member, PPM1A. We show that PPM1A directly dephosphorylated RelA at residues S536 and S276 and selectively inhibited NF-κB transcriptional activity, resulting in decreased expression of monocyte chemotactic protein-1/chemokine (C-C motif) ligand 2 and interleukin-6, cytokines implicated in cancer metastasis. PPM1A depletion enhanced NF-κB-dependent cell invasion, whereas PPM1A expression inhibited invasion. Analyses of human expression data revealed that metastatic prostate cancer deposits had lower PPM1A expression compared with primary tumors without distant metastases. A hematogenous metastasis mouse model revealed that PPM1A expression inhibited bony metastases of prostate cancer cells after vascular injection. In summary, our findings suggest that PPM1A is a RelA phosphatase that regulates NF-κB activity and that PPM1A has tumor suppressor-like activity. Our analyses also suggest that PPM1A inhibits prostate cancer metastases and as neither gene deletions nor inactivating mutations of PPM1A have been described, increasing PPM1A activity in tumors represents a potential therapeutic strategy to inhibit NF-κB signaling or bony metastases in human cancer.
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Affiliation(s)
- X Lu
- Department of Cancer Biology, Vanderbilt University, Nashville, TN, USA
| | - H An
- 1] Department of Cancer Biology, Vanderbilt University, Nashville, TN, USA [2] Division of Surgical Sciences, Vanderbilt University, Nashville, TN, USA
| | - R Jin
- 1] Vanderbilt Prostate Cancer Center, Vanderbilt University, Nashville, TN, USA [2] Department of Urology, Vanderbilt University, Nashville, TN, USA
| | - M Zou
- Division of Otolaryngology, Department of Surgery, Yale University, New Haven, CT, USA
| | - Y Guo
- Department of Cancer Biology, Vanderbilt University, Nashville, TN, USA
| | - P-F Su
- Department of Biostatistics, Vanderbilt University, Nashville, TN, USA
| | - D Liu
- Division of Otolaryngology, Department of Surgery, Yale University, New Haven, CT, USA
| | - Y Shyr
- Department of Biostatistics, Vanderbilt University, Nashville, TN, USA
| | - W G Yarbrough
- 1] Division of Otolaryngology, Department of Surgery, Yale University, New Haven, CT, USA [2] Department of Pathology, Yale University, New Haven, CT, USA [3] Yale Cancer Center, New Haven, CT, USA
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Darestani M, Coster H, Chilcott T, Fleming S, Nagarajan V, An H. Piezoelectric membranes for separation processes: Fabrication and piezoelectric properties. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.01.035] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhang J, Huang D, Yang J, An H, Ojha R, DU C, Liu R. Platelet glycoprotein IaC807T polymorphisms and ischemic stroke in young Chinese Han population. Eur Rev Med Pharmacol Sci 2012; 16:1691-1695. [PMID: 23161041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVES The objective of this study was to investigate the association between platelet glycoprotein (GP) Ia C807T polymorphisms and ischemic stroke in young Chinese Han Population. MATERIALS AND METHODS We conducted a case-control study in 92 consecutive young (</= 50 years) first-ever hospitalized ischemic stroke inpatients and outpatients, 86 elder ischemic stroke control (> 50 years), and 160 age- and sex-matched healthy control. Genotyping of platelet GP Ia C807Tpolymorphisms was performed by polymerase chain reaction followed by sequencing nucleic acid with dideoxy chain-termination method and an ABI PRISM3100 (Perkin-Elmer Co) genetic analyzer. Student's t-test, chi-square test, and logistic regression modeling were used for data significance analyses. RESULTS Hypertension and smoking were found to be the independent risk factors for ischemic stroke patients (aged </= 50 years), while hypertension, diabetes and smoking were the independent risk factors for ischemic stroke patients (aged > 50 years). There was no significant difference observed in the T allele frequency of GPIa C807T polymorphisms between young stroke patients and corresponding controls. CONCLUSIONS These findings suggest that there is no role of GPIa C807T polymorphisms in the development of young first-ever ischemic stroke in Chinese Han Population.
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Affiliation(s)
- J Zhang
- Department of Neurology, East Hospital, Tongji University School of Medicine, Shanghai, China
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Hong SJ, Park YS, An H, Kang SM, Cho EH, Shin SS. Factors leading to under-reporting of tuberculosis in the private sector in Korea. Int J Tuberc Lung Dis 2012; 16:1221-7. [PMID: 22794136 DOI: 10.5588/ijtld.11.0782] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVE To identify factors associated with under-reporting of tuberculosis (TB) in the private sector in Korea. DESIGN A cross-sectional study of 37,820 cases in whom treatment was initiated between January and December 2008 using data from the Nationwide Medical Records Survey of Patients with TB. Adjusted odds ratios (aOR) for under-reporting with respect to socio-demographic and clinical factors were estimated. RESULTS Among the 37,820 identified cases, 21,611 (57.1%) were reported to the Korean TB Surveillance System. Factors associated with under-reporting on univariate analysis included young children, foreign-born persons, non-multidrug-resistant TB, persons prescribed fewer than four anti-tuberculosis drugs, non-performance of or negative result on sputum smear and extra-pulmonary TB (particularly abdominal or genitourinary TB). For pulmonary TB, cases with no sputum smear results vs. smear-positive patients (aOR 2.23, P < 0.001) and those prescribed <4 drugs vs. those who were prescribed ≥4 drugs (aOR 1.60, P < 0.001) were strongly related to under-reporting on multivariate analysis. CONCLUSION The extent of under-reporting was greater among young children, persons who had not received sputum smear testing and those who had been prescribed fewer than four drugs. Furthermore, TB diagnostic investigations were often inadequate. Education on reporting requirements, including the importance of following guidelines on TB management, and a stricter enforcement of the existing TB Prevention Law, are needed.
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Affiliation(s)
- S-J Hong
- Division of HIV and TB Control, Korea Centers for Disease Control and Prevention, Seoul, Korea
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Park J, Chung S, An H, Kim J, Seo J, Kim DH, Yoon SY. Haloperidol and clozapine block formation of autophagolysosomes in rat primary neurons. Neuroscience 2012; 209:64-73. [PMID: 22390943 DOI: 10.1016/j.neuroscience.2012.02.035] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 02/16/2012] [Accepted: 02/16/2012] [Indexed: 12/13/2022]
Abstract
Early intervention and maintenance treatment for schizophrenia patients may prolong the duration of exposure to antipsychotic agents; however, there have been few studies on the neurotoxicity of these agents. Here, we investigated the effects of antipsychotics on cell viability and autophagy in rat primary neurons. Cultured cortical neurons obtained from rat embryos were treated with various concentrations of haloperidol and clozapine, and the neuronal toxicity was assessed by measuring lactate dehydrogenase (LDH) activity and 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay. Autophagosomes were quantitated by measuring the level of microtubule-associated protein 1A/1B-light chain 3 (LC3-II) by Western blot and immunofluorescence staining. Autophagic flux was assayed using bafilomycin A1 and GFP-mCherry-LC3 transfection. Haloperidol and clozapine decreased the viability of neurons in vitro in a concentration- and time-dependent manner. We also observed increased accumulation of autophagosomes after antipsychotic treatment. Using bafilomycin A1 and GFP-mCherry-LC3 transfection, we discovered that haloperidol and clozapine inhibited autophagosome turnover resulting in a dysfunctional autophagic process, including impaired lysosomal fusion. Together, these results suggest that haloperidol and clozapine negatively affect neuronal viability, possibly by blocking autophagolysosome formation.
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Affiliation(s)
- J Park
- Department of Psychiatry, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Yun MH, Seo YS, Kang HS, Lee KG, Kim JH, An H, Yim HJ, Keum B, Jeen YT, Lee HS, Chun HJ, Um SH, Kim CD, Ryu HS. The effect of the respiratory cycle on liver stiffness values as measured by transient elastography. J Viral Hepat 2011; 18:631-6. [PMID: 21029256 DOI: 10.1111/j.1365-2893.2010.01376.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The findings of several studies suggest that liver stiffness values can be affected by the degree of intrahepatic congestion respiration influence intrahepatic blood volume and may affect liver stiffness. We evaluated the influence of respiration on liver stiffness. Transient elastography (TE) was performed at the end of inspiration and at the end of expiration in patients with chronic liver disease. The median values obtained during the inspiration set and during the expiration set were defined as inspiratory and expiratory liver stiffness, respectively. A total of 123 patients with chronic liver disease were enrolled (mean age 49years; 64.2% men). Liver cirrhosis coexisted in 29 patients (23.6%). Expiratory liver stiffness was significantly higher than inspiratory liver stiffness (8.7 vs 7.9kPa, P=0.001), while the expiratory interquartile range/median ratio (IQR ratio) did not differ from the inspiratory IQR ratio. Expiratory liver stiffness was significantly higher than inspiratory liver stiffness in 49 (39.8%) patients (HE group), expiratory liver stiffness was significantly lower than inspiratory stiffness in 15 (12.2%) patients, and there was no difference in 59 (48.0%) patients. Liver cirrhosis was more frequent in those who had a lower liver stiffness reading in expiration, and only the absence of liver cirrhosis was significantly associated with a higher reading in expiration in multivariate analysis. In conclusion, liver stiffness was significantly elevated during expiration especially in patients without liver cirrhosis. The effect of respiration should be kept in mind during TE readings.
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Affiliation(s)
- M H Yun
- Departments of Internal Medicine, Korea University College of Medicine, Seoul, Korea
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Tedla N, An H, Borges L, Vollmer-Conna U, Bryant K, Geczy C, McNeil HP. Expression of activating and inhibitory leukocyte immunoglobulin-like receptors in rheumatoid synovium: correlations to disease activity. ACTA ACUST UNITED AC 2011; 77:305-16. [PMID: 21388353 DOI: 10.1111/j.1399-0039.2011.01633.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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rheumatoid arthritis (RA) is a heterogeneous chronic inflammatory joint disease characterized by excessive activation of inflammatory cells of which the underlying mechanisms are not fully elucidated. Perturbed expression and function of immune regulatory molecules called leukocyte immunoglobulin-like receptors (LILRs) may contribute to uncontrolled inflammation. LILRs primarily expressed on the surface of leukocytes are emerging as critical regulators of the threshold and amplitude of leukocyte activation. Inhibitory LILRs (LILRBs) contain cytoplasmic tails with immunoreceptor tyrosine-based inhibitory motifs that provide negative signals. Activating LILRs (LILRAs) have short cytoplasmic domains lacking signaling motifs but transmit activating signals by linking to immunoreceptor tyrosine-based activation motifs of the FcR γ-chain. Here we show that activating LILRA2, A5 and inhibitory LILRB2, B3 were abundantly expressed in synovial tissue of > 75% RA patients. Expression of LILRA2, A5, and B3 significantly correlated to disease activity. In contrast, LILRA1 and B4 were expressed in a subset of patients and no B1 or B5 expression was detected. LILRA2 and A5 were mainly expressed by synovial macrophages and endothelial cells but not lymphocytes, whereas B2 and B3 were expressed by macrophages and lymphocytes. Increase in the number of macrophages expressing activating LILRs and macrophages and lymphocytes expressing inhibitory LILRs suggest a crosstalk between these cells that may regulate the levels of cellular activation and disease severity, while differences in expression pattern may contribute to disease heterogeneity.
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Affiliation(s)
- N Tedla
- Inflammation and Infection Research Center, School of Medical Sciences, Department of Pathology, University of New South Wales, Sydney, NSW, Australia.
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Chun S, Lee M, Jeon E, An H, Hong T, You Y, Kim D, Lee I. Comparison of the efficacy of gemcitabine with capecitabine and gemcitabine with erlotinib combination chemotherapy in recurrent or advanced pancreatic cancer as first-line treatment: Single-center experience. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.329] [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: 11/20/2022] Open
Abstract
329 Background: We compared the efficacy and toxicity of gemcitabine with capecitabine (GX), and gemcitabine with erlotinib (GT) chemotherapy for recurrent or advanced pancreatic cancer by retrospective analysis. Methods: Between October 2006 and June 2010, 44 patients with recurrent or advanced pancreatic cancer, diagnosed at Seoul St. Mary's hospital were enrolled. In GT group, gemcitabine 1000mg/m2 was administered on days 1, 8, 15, 22, 29, 36, 43 followed by a 1-week rest in first treatment cycle (8 weeks), and then D1, 8, 15 followed by a 1-week rest. Erlotinib was taken orally at 150mg daily through the entire cycle. In GX group, gemcitabine 1000mg/m2 was administered on days 1 and 8. Capecitabine was taken orally at 650mg/m2 twice daily on day 1-14 of a 21-day cycle. Results: In 44 patients, 26 patients were treated with GT, and 18 patients treated with GX. The median age was 56.58 years in GT and 57.67 years in GX. Median number of cycle was 3.04 in GT and 3.57 in GX, and the dose reduction was significantly more common in GX than GT (50% vs. 19%, p=0.031). No complete response was achieved in either group. In GT, partial response and stable disease were achieved in 6 (23.1%) and 8 (30.8%) patients. In GX, partial response and stable disease were shown in 4 (22.2%) and 7 (38.9%) patients, respectively. No significant differences in two patients groups (p=0.442). GX had more favorable clinical outcome of the time to progression (6.1 months vs. 3.0 months, p=0.002) and the overall survival (11.13 months vs. 6.1 months, p=0.012) than GT. The most common grade 3 or 4 toxicity in GT and GX treatment were hematologic toxicity: anemia (8.3%:0%), neutropenia (34.6%:38.8%), thrombocytopenia (15.4%:11.1%). Grade 3 or 4 hand-foot-syndrome of GX was reported in only one patient. Conclusions: GX showed better time to progression and overall survival outcome than GT, but dose reduction was more common. Although there was no significant difference in response rate, and the less dose intensity, GX regimen may be more effective than GT in advanced pancreatic cancer. Further prospective, randomized trials would be warranted in large scale. No significant financial relationships to disclose.
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Affiliation(s)
- S. Chun
- Division of Medical Oncology, Seoul St. Mary's Hospital, Seoul, South Korea; Department of Surgery, Seoul St. Mary's Hospital, Seoul, South Korea; Division of Gastroentereology, Seoul St. Mary's Hospital, Seoul, South Korea
| | - M. Lee
- Division of Medical Oncology, Seoul St. Mary's Hospital, Seoul, South Korea; Department of Surgery, Seoul St. Mary's Hospital, Seoul, South Korea; Division of Gastroentereology, Seoul St. Mary's Hospital, Seoul, South Korea
| | - E. Jeon
- Division of Medical Oncology, Seoul St. Mary's Hospital, Seoul, South Korea; Department of Surgery, Seoul St. Mary's Hospital, Seoul, South Korea; Division of Gastroentereology, Seoul St. Mary's Hospital, Seoul, South Korea
| | - H. An
- Division of Medical Oncology, Seoul St. Mary's Hospital, Seoul, South Korea; Department of Surgery, Seoul St. Mary's Hospital, Seoul, South Korea; Division of Gastroentereology, Seoul St. Mary's Hospital, Seoul, South Korea
| | - T. Hong
- Division of Medical Oncology, Seoul St. Mary's Hospital, Seoul, South Korea; Department of Surgery, Seoul St. Mary's Hospital, Seoul, South Korea; Division of Gastroentereology, Seoul St. Mary's Hospital, Seoul, South Korea
| | - Y. You
- Division of Medical Oncology, Seoul St. Mary's Hospital, Seoul, South Korea; Department of Surgery, Seoul St. Mary's Hospital, Seoul, South Korea; Division of Gastroentereology, Seoul St. Mary's Hospital, Seoul, South Korea
| | - D. Kim
- Division of Medical Oncology, Seoul St. Mary's Hospital, Seoul, South Korea; Department of Surgery, Seoul St. Mary's Hospital, Seoul, South Korea; Division of Gastroentereology, Seoul St. Mary's Hospital, Seoul, South Korea
| | - I. Lee
- Division of Medical Oncology, Seoul St. Mary's Hospital, Seoul, South Korea; Department of Surgery, Seoul St. Mary's Hospital, Seoul, South Korea; Division of Gastroentereology, Seoul St. Mary's Hospital, Seoul, South Korea
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