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Ying W, Wang Y, Wei H, Luo Y, Ma Q, Zhu H, Janssens H, Vukašinović N, Kvasnica M, Winne JM, Gao Y, Tan S, Friml J, Liu X, Russinova E, Sun L. Structure and function of the Arabidopsis ABC transporter ABCB19 in brassinosteroid export. Science 2024; 383:eadj4591. [PMID: 38513023 DOI: 10.1126/science.adj4591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 02/02/2024] [Indexed: 03/23/2024]
Abstract
Brassinosteroids are steroidal phytohormones that regulate plant development and physiology, including adaptation to environmental stresses. Brassinosteroids are synthesized in the cell interior but bind receptors at the cell surface, necessitating a yet to be identified export mechanism. Here, we show that a member of the ATP-binding cassette (ABC) transporter superfamily, ABCB19, functions as a brassinosteroid exporter. We present its structure in both the substrate-unbound and the brassinosteroid-bound states. Bioactive brassinosteroids are potent activators of ABCB19 ATP hydrolysis activity, and transport assays showed that ABCB19 transports brassinosteroids. In Arabidopsis thaliana, ABCB19 and its close homolog, ABCB1, positively regulate brassinosteroid responses. Our results uncover an elusive export mechanism for bioactive brassinosteroids that is tightly coordinated with brassinosteroid signaling.
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Affiliation(s)
- Wei Ying
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yaowei Wang
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Hong Wei
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yongming Luo
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Qian Ma
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Heyuan Zhu
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Hilde Janssens
- Department of Organic and Macromolecular Chemistry, Ghent University, 9000 Ghent, Belgium
| | - Nemanja Vukašinović
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Miroslav Kvasnica
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences and Palacký University, 77900 Olomouc, Czech Republic
| | - Johan M Winne
- Department of Organic and Macromolecular Chemistry, Ghent University, 9000 Ghent, Belgium
| | - Yongxiang Gao
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Shutang Tan
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Jiří Friml
- Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria
| | - Xin Liu
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Eugenia Russinova
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Linfeng Sun
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
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Mayooran N, Sherif A, Koulouroudias M, Gnanalingham S, Ahmed Saleh WU, Tan S, Boulemden A, Szafranek A. Surgical resection of primary intracardiac sarcomas and outcomes: A review of case reports over 20 years. Indian J Thorac Cardiovasc Surg 2024; 40:213-218. [PMID: 38389783 PMCID: PMC10879044 DOI: 10.1007/s12055-023-01618-0] [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] [Received: 03/27/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 02/24/2024] Open
Abstract
Objective A quarter of all cardiac tumors are malignant, and most (~ 95%) are sarcomas. It is the most aggressive malignant cardiac tumor carrying the worst prognosis. Tumor involvement with the vital intracardiac structures makes it difficult for complete surgical resection. We aimed to study the role of complete surgical resection and its importance in long-term outcomes. Methods We analyzed published literature from 2002 to 2022 using PubMed. Cases reported adult, intracardiac sarcomas, and received surgical resections were included. We reviewed 132 published case reports, including and analyzed the following variables: demographics, clinical presentations, diagnostic imaging modality, the extent of surgical resection, pathological diagnosis, tumor location, postoperative chemo-radiation therapy, and follow-up (including re-operation, local and distant recurrence). Results A total of 135 patients are included from 132 articles. The mean age was 46.69 (18-86) and 76 patients were females. The main complaints were dyspnea (70%) and chest pain (32%). Performed investigations were transthoracic echocardiography (TTE) in 114/135 (84%), computer tomography (CT) scan 89/135 (66%), trans-esophageal echocardiography (TOE) 22%, and cardiac magnetic resonance imaging (MRI) 29%. The most common location was the atrium (left 46%, right 30%). Complete surgical resection was performed in 91 cases (67%), and frozen section was performed in 62 patients (43 positives). Incomplete resections were in 42 cases. Patients who underwent complete surgical resection had mean survival of 14.58 months and median of 10.5 months, compared to incomplete resection patients with 9.12 months and 6.5 months respectively. Conclusion Our review shows complete surgical resection results in better short- and long-term outcomes in intracardiac sarcoma patients. Furthermore, combining chemo-radiotherapy has additional benefits towards long-term survival.
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Affiliation(s)
- Nithiananthan Mayooran
- Department of Cardiac Surgery, Trent Cardiac Centre, Nottingham University Hospital, Nottingham, UK
- Nottingham University Hospital, Nottingham, UK
| | - A. Sherif
- Department of Cardiac Surgery, Trent Cardiac Centre, Nottingham University Hospital, Nottingham, UK
| | - M. Koulouroudias
- Department of Cardiac Surgery, Trent Cardiac Centre, Nottingham University Hospital, Nottingham, UK
| | | | - W. U. Ahmed Saleh
- Department of Cardiac Surgery, Trent Cardiac Centre, Nottingham University Hospital, Nottingham, UK
| | - S. Tan
- Department of Cardiac Surgery, Trent Cardiac Centre, Nottingham University Hospital, Nottingham, UK
| | - A. Boulemden
- Department of Cardiac Surgery, Trent Cardiac Centre, Nottingham University Hospital, Nottingham, UK
| | - A. Szafranek
- Department of Cardiac Surgery, Trent Cardiac Centre, Nottingham University Hospital, Nottingham, UK
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Yulia DE, Tan S. Intraocular pressure measurements in paediatric glaucoma: A narrative review on accuracy, tolerability, and ease of use. Med J Malaysia 2024; 79:206-211. [PMID: 38553928] [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: 04/02/2024]
Abstract
INTRODUCTION Numerous tonometers are available to measure intraocular pressure (IOP) in children with glaucoma. This review aims to discuss IOP measurement techniques and principles and compare the accuracy, tolerability and ease of use of available tonometers in measuring IOP in paediatric glaucoma patients. MATERIALS AND METHODS A review of observational studies was conducted to discuss the accuracy, tolerability and ease of use of tonometers in measuring IOP in children with glaucoma. RESULTS Goldmann applanation tonometry (GAT) and its portable handheld versions remain the gold standard in measuring IOP. Tono-Pen (Reichert Ophthalmic Instruments, Depew, New York, USA) and rebound tonometer (RBT) both correlate well with GAT. Although both tonometers tend to overestimate IOP, Tono-Pen overestimates more than RBT. Overestimation is more remarkable in higher IOP and corneal pathologies (such as but not limited to scarred cornea and denser corneal opacity). RBT was better tolerated than other tonometers in children and was easier to use in children of all ages. CONCLUSIONS RBT is the preferred tonometer for measuring IOP in children with glaucoma, as it is less traumatic, time efficient and does not require fluorescein dye or anaesthesia. However, examiners should use a second tonometer to confirm elevated IOP readings from the RBT.
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Affiliation(s)
- D E Yulia
- Universitas Indonesia, Cipto Mangunkusumo National Central General Hospital, Faculty of Medicine, Department of Ophthalmology, Jakarta, Indonesia.
| | - S Tan
- Universitas Indonesia, Faculty of Medicine, Jakarta, Indonesia
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Gounou C, Rouyer L, Siegfried G, Harté E, Bouvet F, d'Agata L, Darbo E, Lefeuvre M, Derieppe MA, Bouton L, Mélane M, Chapeau D, Martineau J, Prouzet-Mauleon V, Tan S, Souleyreau W, Saltel F, Argoul F, Khatib AM, Brisson AR, Iggo R, Bouter A. Inhibition of the membrane repair protein annexin-A2 prevents tumor invasion and metastasis. Cell Mol Life Sci 2023; 81:7. [PMID: 38092984 PMCID: PMC10719157 DOI: 10.1007/s00018-023-05049-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 11/09/2023] [Accepted: 11/11/2023] [Indexed: 12/17/2023]
Abstract
Cancer cells are exposed to major compressive and shearing forces during invasion and metastasis, leading to extensive plasma membrane damage. To survive this mechanical stress, they need to repair membrane injury efficiently. Targeting the membrane repair machinery is thus potentially a new way to prevent invasion and metastasis. We show here that annexin-A2 (ANXA2) is required for membrane repair in invasive breast and pancreatic cancer cells. Mechanistically, we show by fluorescence and electron microscopy that cells fail to reseal shear-stress damaged membrane when ANXA2 is silenced or the protein is inhibited with neutralizing antibody. Silencing of ANXA2 has no effect on proliferation in vitro, and may even accelerate migration in wound healing assays, but reduces tumor cell dissemination in both mice and zebrafish. We expect that inhibiting membrane repair will be particularly effective in aggressive, poor prognosis tumors because they rely on the membrane repair machinery to survive membrane damage during tumor invasion and metastasis. This could be achieved either with anti-ANXA2 antibodies, which have been shown to inhibit metastasis of breast and pancreatic cancer cells, or with small molecule drugs.
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Affiliation(s)
- C Gounou
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - L Rouyer
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - G Siegfried
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
- XenoFish, B2 Ouest, Allée Geoffroy St Hilaire CS50023, 33615, Pessac, France
| | - E Harté
- CNRS, LOMA, UMR 5798, University of Bordeaux, 33400, Talence, France
| | - F Bouvet
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - L d'Agata
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - E Darbo
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - M Lefeuvre
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - M A Derieppe
- Animalerie Mutualisée, Service Commun des Animaleries, University of Bordeaux, 33000, Bordeaux, France
| | - L Bouton
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - M Mélane
- CNRS, LOMA, UMR 5798, University of Bordeaux, 33400, Talence, France
| | - D Chapeau
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - J Martineau
- Animalerie Mutualisée, Service Commun des Animaleries, University of Bordeaux, 33000, Bordeaux, France
| | - V Prouzet-Mauleon
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
- CRISPRedit, TBMcore, UAR CNRS 3427, Inserm US 005, University of Bordeaux, Bordeaux, France
| | - S Tan
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - W Souleyreau
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - F Saltel
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - F Argoul
- CNRS, LOMA, UMR 5798, University of Bordeaux, 33400, Talence, France
| | - A M Khatib
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
- XenoFish, B2 Ouest, Allée Geoffroy St Hilaire CS50023, 33615, Pessac, France
- Bergonié Institute, Bordeaux, France
| | - A R Brisson
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France
| | - R Iggo
- INSERM, BRIC, U 1312, University of Bordeaux, 33000, Bordeaux, France
| | - A Bouter
- CNRS, Bordeaux INP, CBMN, UMR 5248, University of Bordeaux, Bât. B14, Allée Geoffroy Saint Hilaire, 33600, Pessac, France.
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Tan S, Machrumnizar M. Fish and Food-Fatale: Food-borne Trematode Opisthorchis viverrini and Cholangiocarcinoma. Helminthologia 2023; 60:287-299. [PMID: 38222491 PMCID: PMC10787637 DOI: 10.2478/helm-2023-0036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 10/20/2023] [Indexed: 01/16/2024] Open
Abstract
Neglected Tropical Diseases (NTDs) are a group of communicable diseases with a long history with human beings. NTDs are the proxy of poverty since they affect those in low-income and extreme-poverty populations, as those populations lack access to proper health care, clean water, sanitary conditions, and hygiene. NTDs create losses for a nation that come from the health and the economic sectors as well since the costs of diagnosis, prevention, and treatment strain the national purse strings. One of the 20 different forms of NTDs on the list is food-borne trematodes, comprises of Fasciola, Paragonimus, Clonorchis, and Opisthorchis. Currently, it is estimated that food-borne trematodes can cause a devastating effect on mortality and morbidity. All of them are zoonotic, as humans become infected by ingestion of a second intermediate host, such as freshwater snails, fish, or water vegetables. Opisthorchis viverrini, one of the food-borne trematodes that can be found mostly in South East Asia regions, especially in the Mekong basin, is regarded as a group 1 carcinogen leading to cholangiocarcinoma (CCA). This study aims to present the updated review of Opisthorchis viverrini and CCA.
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Affiliation(s)
- S. Tan
- Department of Parasitology, Faculty of Medicine, Universitas Trisakti, Jakarta11440, Indonesia
- Tropical Diseases and Public Health Research Centre, Faculty of Medicine, Universitas Trisakti, Jakarta11440, Indonesia
| | - M. Machrumnizar
- Department of Parasitology, Faculty of Medicine, Universitas Trisakti, Jakarta11440, Indonesia
- Tropical Diseases and Public Health Research Centre, Faculty of Medicine, Universitas Trisakti, Jakarta11440, Indonesia
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6
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Xia J, Kong M, Yang Z, Sun L, Peng Y, Mao Y, Wei H, Ying W, Gao Y, Friml J, Weng J, Liu X, Sun L, Tan S. Chemical inhibition of Arabidopsis PIN-FORMED auxin transporters by the anti-inflammatory drug naproxen. Plant Commun 2023; 4:100632. [PMID: 37254481 PMCID: PMC10721474 DOI: 10.1016/j.xplc.2023.100632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/12/2023] [Accepted: 05/24/2023] [Indexed: 06/01/2023]
Abstract
The phytohormone auxin plays central roles in many growth and developmental processes in plants. Development of chemical tools targeting the auxin pathway is useful for both plant biology and agriculture. Here we reveal that naproxen, a synthetic compound with anti-inflammatory activity in humans, acts as an auxin transport inhibitor targeting PIN-FORMED (PIN) transporters in plants. Physiological experiments indicate that exogenous naproxen treatment affects pleiotropic auxin-regulated developmental processes. Additional cellular and biochemical evidence indicates that naproxen suppresses auxin transport, specifically PIN-mediated auxin efflux. Moreover, biochemical and structural analyses confirm that naproxen binds directly to PIN1 protein via the same binding cavity as the indole-3-acetic acid substrate. Thus, by combining cellular, biochemical, and structural approaches, this study clearly establishes that naproxen is a PIN inhibitor and elucidates the underlying mechanisms. Further use of this compound may advance our understanding of the molecular mechanisms of PIN-mediated auxin transport and expand our toolkit in auxin biology and agriculture.
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Affiliation(s)
- Jing Xia
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Mengjuan Kong
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Zhisen Yang
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Lianghanxiao Sun
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yakun Peng
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yanbo Mao
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Hong Wei
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Wei Ying
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yongxiang Gao
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Jiří Friml
- Institute of Science and Technology Austria (ISTA), Am Campus 1, 3400 Klosterneuburg, Austria
| | - Jianping Weng
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China.
| | - Xin Liu
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China.
| | - Linfeng Sun
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China.
| | - Shutang Tan
- MOE Key Laboratory for Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, The First Affiliated Hospital of USTC, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China; Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China.
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7
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Roychoudhry S, Sageman-Furnas K, Wolverton C, Grones P, Tan S, Molnár G, De Angelis M, Goodman HL, Capstaff N, Lloyd JPB, Mullen J, Hangarter R, Friml J, Kepinski S. Antigravitropic PIN polarization maintains non-vertical growth in lateral roots. Nat Plants 2023; 9:1500-1513. [PMID: 37666965 PMCID: PMC10505559 DOI: 10.1038/s41477-023-01478-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 07/04/2023] [Indexed: 09/06/2023]
Abstract
Lateral roots are typically maintained at non-vertical angles with respect to gravity. These gravitropic setpoint angles are intriguing because their maintenance requires that roots are able to effect growth response both with and against the gravity vector, a phenomenon previously attributed to gravitropism acting against an antigravitropic offset mechanism. Here we show how the components mediating gravitropism in the vertical primary root-PINs and phosphatases acting upon them-are reconfigured in their regulation such that lateral root growth at a range of angles can be maintained. We show that the ability of Arabidopsis lateral roots to bend both downward and upward requires the generation of auxin asymmetries and is driven by angle-dependent variation in downward gravitropic auxin flux acting against angle-independent upward, antigravitropic flux. Further, we demonstrate a symmetry in auxin distribution in lateral roots at gravitropic setpoint angle that can be traced back to a net, balanced polarization of PIN3 and PIN7 auxin transporters in the columella. These auxin fluxes are shifted by altering PIN protein phosphoregulation in the columella, either by introducing PIN3 phosphovariant versions or via manipulation of levels of the phosphatase subunit PP2A/RCN1. Finally, we show that auxin, in addition to driving lateral root directional growth, acts within the lateral root columella to induce more vertical growth by increasing RCN1 levels, causing a downward shift in PIN3 localization, thereby diminishing the magnitude of the upward, antigravitropic auxin flux.
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Affiliation(s)
| | - Katelyn Sageman-Furnas
- School of Biology, University of Leeds, Leeds, UK
- Department of Biology, Duke University, Durham, NC, USA
| | | | - Peter Grones
- Institute of Science and Technology, Vienna, Austria
- Umeå Plant Science Centre, Umeå, Sweden
| | - Shutang Tan
- Institute of Science and Technology, Vienna, Austria
| | - Gergely Molnár
- Institute of Science and Technology, Vienna, Austria
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences (BOKU), Vienna, Austria
| | | | - Heather L Goodman
- School of Biology, University of Leeds, Leeds, UK
- Tropic Biosciences Ltd, Norwich Research Park Innovation Centre, Norwich, UK
| | - Nicola Capstaff
- School of Biology, University of Leeds, Leeds, UK
- Department of Science, Innovation and Technology, UK Government, London, UK
| | - James P B Lloyd
- University of Western Australia, Perth, Western Australia, Australia
| | - Jack Mullen
- Department of Bioagricultural Sciences & Pest Management, Colorado State University, Fort Collins, CO, USA
| | - Roger Hangarter
- Department of Biology, Indiana University, Bloomington, IN, USA
| | - Jiří Friml
- Institute of Science and Technology, Vienna, Austria
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8
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Zhang J, Zhao P, Chen S, Sun L, Mao J, Tan S, Xiang C. The ABI3-ERF1 module mediates ABA-auxin crosstalk to regulate lateral root emergence. Cell Rep 2023; 42:112809. [PMID: 37450369 DOI: 10.1016/j.celrep.2023.112809] [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] [Received: 03/08/2023] [Revised: 06/03/2023] [Accepted: 06/28/2023] [Indexed: 07/18/2023] Open
Abstract
Abscisic acid (ABA) is involved in lateral root (LR) development, but how ABA signaling interacts with auxin signaling to regulate LR formation is not well understood. Here, we report that ABA-responsive ERF1 mediates the crosstalk between ABA and auxin signaling to regulate Arabidopsis LR emergence. ABI3 is a negative factor in LR emergence and transcriptionally activates ERF1 by binding to its promoter, and reciprocally, ERF1 activates ABI3, which forms a regulatory loop that enables rapid signal amplification. Notably, ABI3 physically interacts with ERF1, reducing the cis element-binding activities of both ERF1 and ABI3 and thus attenuating the expression of ERF1-/ABI3-regulated genes involved in LR emergence and ABA signaling, such as PIN1, AUX1, ARF7, and ABI5, which may provide a molecular rheostat to avoid overamplification of auxin and ABA signaling. Taken together, our findings identify the role of the ABI3-ERF1 module in mediating crosstalk between ABA and auxin signaling in LR emergence.
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Affiliation(s)
- Jing Zhang
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Pingxia Zhao
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China.
| | - Siyan Chen
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Liangqi Sun
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Jieli Mao
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Shutang Tan
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Chengbin Xiang
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China.
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9
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Oymaci E, Kahramansoy N, Tan S, Aydogan S, Yildirim M. The diagnostic role of preoperative blood tests in complicated appendicitis: A feasible approach to surgical decision. Niger J Clin Pract 2023; 26:1005-1010. [PMID: 37635587 DOI: 10.4103/njcp.njcp_906_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2023]
Abstract
Background An accurate diagnosis and timely surgical intervention have significant importance in noncomplicated appendicitis (NCA) and complicated appendicitis (CA). Therefore, any factor that helps in the prediction of CA also contributes to suitable treatment options. Aim This retrospective study aimed to identify any relationship between acute appendicitis (AA) and preoperative blood test levels and whether these parameters can differentiate between NCA and CA patients. Patients and Methods A database of 201 appendectomies and 100 control healthy patients was analyzed between 2019 and 2022. Patients were divided into three groups: NCA without peritonitis or phlegmonous appendicitis as group 1; CA with perforated, necrotizing appendicitis with peritonitis as group 2; and the healthy control group (CG) as group 3. White blood cell (WBC), platelet distribution width (PDW), mean platelet volume (MPV), red cell distribution width (RDW), creatine kinase (CK), and bilirubin levels were collected from the patients and compared statistically between the groups. Results Age, WBC, and PDW levels were set as predictive in the differential diagnosis of CA as a result of receiver operating characteristic (ROC) analysis. The multivariate analysis demonstrated that age (OR: 1.023; 95% CI: 1.000-1.045; P = 0.04), male sex (OR: 3.718; 95% CI: 1.501-9.213; P = 0.005), WBC levels (OR: 1.000; 95% CI: 1.000-1.000; P = 0.002), and PDW levels (OR: 2.129; 95% CI: 1.301-3.484; P = 0.003) were independently associated with CA. Conclusion Age, higher WBC count, and PDW levels are valuable in differentiating the diagnosis of CA from NCA, and this could be a feasible approach for surgical decisions.
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Affiliation(s)
- E Oymaci
- Department of General Surgery, Health Sciences University, Izmir Bozyaka Education and Research Hospital, Turkey
| | - N Kahramansoy
- Department of General Surgery, Health Sciences University, Izmir Bozyaka Education and Research Hospital, Turkey
| | - S Tan
- Department of General Surgery, Health Sciences University, Izmir Bozyaka Education and Research Hospital, Turkey
| | - S Aydogan
- Department of General Surgery, Health Sciences University, Izmir Bozyaka Education and Research Hospital, Turkey
| | - M Yildirim
- Department of General Surgery, Health Sciences University, Izmir Bozyaka Education and Research Hospital, Turkey
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10
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Zhao P, Zhang J, Chen S, Zhang Z, Wan G, Mao J, Wang Z, Tan S, Xiang C. ERF1 inhibits lateral root emergence by promoting local auxin accumulation and repressing ARF7 expression. Cell Rep 2023; 42:112565. [PMID: 37224012 DOI: 10.1016/j.celrep.2023.112565] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 02/28/2023] [Accepted: 05/09/2023] [Indexed: 05/26/2023] Open
Abstract
Lateral roots (LRs) are crucial for plants to sense environmental signals in addition to water and nutrient absorption. Auxin is key for LR formation, but the underlying mechanisms are not fully understood. Here, we report that Arabidopsis ERF1 inhibits LR emergence by promoting local auxin accumulation with altered distribution and regulating auxin signaling. Loss of ERF1 increases LR density compared with the wild type, whereas ERF1 overexpression causes the opposite phenotype. ERF1 enhances auxin transport by upregulating PIN1 and AUX1, resulting in excessive auxin accumulation in the endodermal, cortical, and epidermal cells surrounding LR primordia. Furthermore, ERF1 represses ARF7 transcription, thereby downregulating the expression of cell-wall remodeling genes that facilitate LR emergence. Together, our study reveals that ERF1 integrates environmental signals to promote local auxin accumulation with altered distribution and repress ARF7, consequently inhibiting LR emergence in adaptation to fluctuating environments.
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Affiliation(s)
- Pingxia Zhao
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China.
| | - Jing Zhang
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Siyan Chen
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Zisheng Zhang
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Guangyu Wan
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Jieli Mao
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Zhen Wang
- College of Life Sciences, Anhui Agricultural University, Hefei, Anhui Province 230036, China
| | - Shutang Tan
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China
| | - Chengbin Xiang
- Division of Life Sciences and Medicine, Division of Molecular & Cell Biophysics, Hefei National Science Center for Interdisciplinary Sciences at the Microscale, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, University of Science and Technology of China, The Innovation Academy of Seed Design, Chinese Academy of Sciences, Hefei, Anhui Province 230027, China.
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11
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Zheng V, Wee IJY, Abdullah HR, Tan S, Tan EKW, Seow-En I. Same-day discharge (SDD) vs standard enhanced recovery after surgery (ERAS) protocols for major colorectal surgery: a systematic review. Int J Colorectal Dis 2023; 38:110. [PMID: 37121985 PMCID: PMC10149457 DOI: 10.1007/s00384-023-04408-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/10/2023] [Indexed: 05/02/2023]
Abstract
BACKGROUND Enhanced recovery after surgery (ERAS) programs are well-established, resulting in improved outcomes and shorter length of hospital stay (LOS). Same-day discharge (SDD), or "hyper-ERAS", is a natural progression of ERAS. This systematic review aims to compare the safety and efficacy of SDD against conventional ERAS in colorectal surgery. METHODS The protocol was prospectively registered in PROSPERO (394793). A systematic search was performed in major databases to identify relevant articles, and a narrative systematic review was performed. Primary outcomes were readmission rates and length of hospital stay (LOS). Secondary outcomes were operative time and blood loss, postoperative pain, morbidity, nausea or vomiting, and patient satisfaction. Risks of bias was assessed using the ROBINS-I tool. RESULTS Thirteen studies were included, with five single-arm and eight comparative studies, of which one was a randomised controlled trial. This comprised a total of 38,854 patients (SDD: 1622; ERAS: 37,232). Of the 1622 patients on the SDD pathway, 1590 patients (98%) were successfully discharged within 24 h of surgery. While most studies had an overall low risk of bias, there was considerable variability in inclusion criteria, types of surgery or anaesthesia, and discharge criteria. SDD resulted in a significantly reduced postoperative LOS, without increasing risk of 30-day readmission. Intraoperative blood loss and postoperative morbidity rates were comparable between both groups. Operative duration was shorter in the SDD group. Patient-reported satisfaction was high in the SDD cohort. CONCLUSION SDD protocols appear to be safe and feasible in selected patients undergoing major colorectal operations. Randomised controlled trials are necessary to further substantiate these findings.
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Affiliation(s)
- V Zheng
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore City, Singapore
| | - I J Y Wee
- Department of Colorectal Surgery, Singapore General Hospital, Singapore City, Singapore
| | - H R Abdullah
- Department of Anaesthesiology, Singapore General Hospital, Singapore City, Singapore
| | - S Tan
- Department of Anaesthesiology, Singapore General Hospital, Singapore City, Singapore
| | - E K W Tan
- Department of Colorectal Surgery, Singapore General Hospital, Singapore City, Singapore
| | - I Seow-En
- Department of Colorectal Surgery, Singapore General Hospital, Singapore City, Singapore.
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12
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Peng N, Chen Y, Chen YG, Tan S, Yao WB, Li YX, Yu JQ, Xiao CZ. Amplification of a terahertz wave via stimulated Raman scattering. Opt Lett 2023; 48:2433-2436. [PMID: 37126291 DOI: 10.1364/ol.484033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Extremely strong terahertz (THz) waves are desperately demanded for investigating nonlinear physics, spectroscopy, and imaging in the THz range. However, traditional crystal-/semiconductor-based THz sources have limitations of reaching extremely high amplitude due to the damage threshold of devices. Here, by introducing Raman amplification to the THz range, we propose a novel, to the best of our knowledge, scheme to amplify THz waves in plasma. A long-pulse CO2 pump laser transfers its energy to a multicycle, 10-THz seed in a two-step plasma. By one-dimensional simulations, a 0.87-GV/m, 1.2-ps-duration THz seed is amplified to 10 GV/m in a 5.7-mm-long plasma with an amplification efficiency approaching 1%. The method provides a new technology to manipulate the intensity of THz waves.
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13
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Tan S, Zhou X, Xu X, Lu Y, Zeng X, Wu Q, Wang Y. Diagnostic Performance of High-Resolution Vessel Wall MR Imaging Combined with TOF-MRA in the Follow-up of Intracranial Vertebrobasilar Dissecting Aneurysms after Reconstructive Endovascular Treatment. AJNR Am J Neuroradiol 2023; 44:453-459. [PMID: 36958804 PMCID: PMC10084898 DOI: 10.3174/ajnr.a7838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 02/14/2023] [Indexed: 03/25/2023]
Abstract
BACKGROUND AND PURPOSE Few studies have reported the utility of high-resolution vessel wall MR imaging in the follow-up of endovascularly treated vertebrobasilar dissecting aneurysms. This study aimed to evaluate the diagnostic performance of high-resolution vessel wall MR imaging combined with TOF-MRA in the follow-up of intracranial vertebrobasilar dissecting aneurysms after reconstructive endovascular treatment. MATERIALS AND METHODS Patients with intracranial vertebrobasilar dissecting aneurysms with reconstructive endovascular treatment and followed up with TOF-MRA, high-resolution vessel wall MR imaging, and DSA were included. With DSA as the criterion standard, the diagnostic performance of TOF-MRA, high-resolution vessel wall MR imaging, and high-resolution vessel wall MR imaging combined with TOF-MRA in the evaluation of aneurysm occlusion status and parent artery patency was assessed. Visualization of the stented artery on TOF-MRA and high-resolution vessel wall MR imaging was rated on a 5-point scale. RESULTS Twenty-seven patients with 29 aneurysms were included. The sensitivity, specificity, positive predictive value, and negative predictive value of TOF-MRA, high-resolution vessel wall MR imaging, and high-resolution vessel wall MR imaging combined with TOF-MRA for diagnosing aneurysm remnants were 80.0%, 100.0%, 100.0%, and 82.4%; 53.3%, 100.0%, 100.0%, and 66.7%; and 93.3%, 100.0%, 100.0%, and 93.3%, respectively. For the visualization of the stented artery, the mean score of high-resolution vessel wall MR imaging was significantly higher than that of TOF-MRA (4.88 [SD, 0.32] versus 2.53 [SD, 1.25], P < .001). In the evaluation of parent artery patency (normal or pathologic), whereas TOF-MRA had a sensitivity, specificity, positive predictive value, and negative predictive value of 100.0%, 8.0%, 14.8%, and 100.0%, respectively, high-resolution vessel wall MR imaging was completely consistent with the DSA. CONCLUSIONS High-resolution vessel wall MR imaging combined with TOF-MRA at 3T showed good diagnostic performance in the follow-up of intracranial vertebrobasilar dissecting aneurysms after reconstructive endovascular treatment.
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Affiliation(s)
- S Tan
- From the Departments of Neurosurgery (S.T., Y.L., X. Zhou, Y.W.)
| | - X Zhou
- From the Departments of Neurosurgery (S.T., Y.L., X. Zhou, Y.W.)
| | - X Xu
- Department of Neurosurgery (X.X.), The First People's Hospital of Zhaoqing City, Zhaoqing, Guangdong Province, China
| | - Y Lu
- From the Departments of Neurosurgery (S.T., Y.L., X. Zhou, Y.W.)
| | - X Zeng
- Radiology (X. Zeng, Q.W.), The First Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, Jiangxi Province, China
| | - Q Wu
- Radiology (X. Zeng, Q.W.), The First Affiliated Hospital of Nanchang University, Nanchang University, Nanchang, Jiangxi Province, China
| | - Y Wang
- Department of Neurosurgery (Y.W.), Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
- From the Departments of Neurosurgery (S.T., Y.L., X. Zhou, Y.W.)
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14
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Tan S, Huang Y, Xiong J, Gao X, Ren H, Gao S. Identification and Comparative Analysis of the miRNAs in Gonads of High-altitude Species, Batrachuperus tibetanus. Russ J Bioorg Chem 2022. [DOI: 10.1134/s1068162023010260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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15
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Choy S, Paolino A, Kim B, Lim S, Seo J, Tan S, Tan W, Corbett M, Barker J, Lynch M, Smith C, Mahil S. 100 Deep learning image analyses in dermatology, beyond skin lesions: a systematic review. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.110] [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: 11/19/2022]
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16
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Ong S, Pasaribu S, Tan S, Aw T, Huang J, Woo M, Koh S, Khoo K. Quality Improvement at the Laboratory’s Specimen Reception Station. Am J Clin Pathol 2022. [DOI: 10.1093/ajcp/aqac126.253] [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: 11/11/2022] Open
Abstract
Abstract
Introduction/Objective
In our 1000-bed acute care tertiary hospital, physicians order laboratory tests via the computerized-provider-order-entry (CPOE) system and print barcode labels (patient demographics/tests ordered) at the computer-on-wheel printer. When tubes with unsuitable barcodes (misaligned, poor quality) are received at the laboratory specimen reception area a fresh barcode is re-printed by our laboratory staff. An incident involving a re- printed barcode label pasted on the wrong blood tube prompted an investigation into the quality of barcodes.
Methods/Case Report
We initiated ‘an opportunity for improvement (OFI) project’ at the laboratory specimen reception station. The OFI team involved Nursing, Information Technology (IT) and Pathology departments aimed to eliminate re-printing of barcode labels by 75% within 6 months. We collated and analyzed reasons for re-printing of barcodes on 3 separate 48-hour periods (27-28 April 2020, 24-25 June 2020, and 13-14 June 2022). A series of interventions and initiatives were implemented.
Results (if a Case Study enter NA)
Re-printed barcodes were from the Emergency Department (56%), Out-patient clinics (7%) and Wards (57%). Root cause analysis(RCA) using the “5 whys” technique categorized re-print causes into staff-related (misaligned barcodes) and printer-related (faint barcodes lines/truncated un-verifiable patient demographics). The team mass-emailed clinicians an educational “Do-You-Know” guide on proper pasting of barcodes on blood tubes and instructions on how to obtain help for printer rectification. These guide documents were placed in the hospital-wide document-sharing portal - Docupedia. Immediate close follow-up with sites that had poor barcodes was done in real-time. Barcode reprints decreased 83% within 2 months - from 174 (27-28 Apr 2020) to 30 (24-25 Jun 2020). A recent audit showed sustained elimination of barcode re-printing: 25 cases (13-14 Jun 2022).
Conclusion
The OFI project has successfully raised the quality of CPOE labels on specimen tubes contributing to process efficiency and safer patient care. Close communication with all care sites and their representatives on the OFI team are critical success factors.
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Affiliation(s)
- S Ong
- Pathology, Sengkang General Hospital , Singapore , Singapore
| | - S Pasaribu
- Pathology, Sengkang General Hospital , Singapore , Singapore
| | - S Tan
- Pathology, Sengkang General Hospital , Singapore , Singapore
| | - T Aw
- Pathology, Sengkang General Hospital , Singapore , Singapore
| | - J Huang
- Pathology, Sengkang General Hospital , Singapore , Singapore
| | - M Woo
- Information Technology, Sengkang General Hospital , Singapore , Singapore
| | - S Koh
- Nursing, Sengkang General Hospital , Singapore , Singapore
| | - K Khoo
- Nursing, Sengkang General Hospital , Singapore , Singapore
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17
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Chan A, Gan S, Tan S, Lim A, Lee C. Prevalence of mosaicism in day 5 vs. day 6 human blastocysts. Reprod Biomed Online 2022. [DOI: 10.1016/j.rbmo.2022.08.028] [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: 10/07/2022]
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18
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Kong M, Liu X, Sun L, Tan S. Molecular mechanisms of N-1-naphthylphthalamic acid, a chemical tool in plant biology and agriculture. Mol Hortic 2022; 2:22. [PMID: 37789470 PMCID: PMC10514944 DOI: 10.1186/s43897-022-00043-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Affiliation(s)
- Mengjuan Kong
- MOE Key Laboratory for Cellular Dynamics, and School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China
| | - Xin Liu
- MOE Key Laboratory for Cellular Dynamics, and School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China
| | - Linfeng Sun
- MOE Key Laboratory for Cellular Dynamics, and School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China.
| | - Shutang Tan
- MOE Key Laboratory for Cellular Dynamics, and School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China.
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Konstantinova N, Hoermayer L, Glanc M, Keshkeih R, Tan S, Di Donato M, Retzer K, Moulinier-Anzola J, Schwihla M, Korbei B, Geisler M, Friml J, Luschnig C. Author Correction: WAVY GROWTH Arabidopsis E3 ubiquitin ligases affect apical PIN sorting decisions. Nat Commun 2022; 13:5433. [PMID: 36114197 PMCID: PMC9481541 DOI: 10.1038/s41467-022-33198-9] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Nataliia Konstantinova
- Department of Applied Genetics and Cell Biology, Institute of Molecular Plant Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, 1190, Wien, Austria.,Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium.,, VIB Center for Plant Systems Biology, 9052, Ghent, Belgium
| | - Lukas Hoermayer
- Institute of Science and Technology Austria (IST Austria), 3400, Klosterneuburg, Austria
| | - Matouš Glanc
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052, Ghent, Belgium.,, VIB Center for Plant Systems Biology, 9052, Ghent, Belgium.,Institute of Science and Technology Austria (IST Austria), 3400, Klosterneuburg, Austria
| | - Rabab Keshkeih
- Department of Applied Genetics and Cell Biology, Institute of Molecular Plant Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, 1190, Wien, Austria
| | - Shutang Tan
- Institute of Science and Technology Austria (IST Austria), 3400, Klosterneuburg, Austria.,School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230026, China
| | - Martin Di Donato
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700, Fribourg, Switzerland
| | - Katarzyna Retzer
- Department of Applied Genetics and Cell Biology, Institute of Molecular Plant Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, 1190, Wien, Austria.,Institute of Experimental Botany of the Czech Academy of Sciences, Rozvojová 263, Praha 6, Czech Republic
| | - Jeanette Moulinier-Anzola
- Department of Applied Genetics and Cell Biology, Institute of Molecular Plant Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, 1190, Wien, Austria
| | - Max Schwihla
- Department of Applied Genetics and Cell Biology, Institute of Molecular Plant Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, 1190, Wien, Austria
| | - Barbara Korbei
- Department of Applied Genetics and Cell Biology, Institute of Molecular Plant Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, 1190, Wien, Austria
| | - Markus Geisler
- Department of Biology, University of Fribourg, Chemin du Musée 10, 1700, Fribourg, Switzerland
| | - Jiří Friml
- Institute of Science and Technology Austria (IST Austria), 3400, Klosterneuburg, Austria
| | - Christian Luschnig
- Department of Applied Genetics and Cell Biology, Institute of Molecular Plant Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, 1190, Wien, Austria.
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20
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Yang Z, Xia J, Hong J, Zhang C, Wei H, Ying W, Sun C, Sun L, Mao Y, Gao Y, Tan S, Friml J, Li D, Liu X, Sun L. Structural insights into auxin recognition and efflux by Arabidopsis PIN1. Nature 2022; 609:611-615. [PMID: 35917925 PMCID: PMC9477737 DOI: 10.1038/s41586-022-05143-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [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: 01/11/2022] [Accepted: 07/25/2022] [Indexed: 11/09/2022]
Abstract
Polar auxin transport is unique to plants and coordinates their growth and development1,2. The PIN-FORMED (PIN) auxin transporters exhibit highly asymmetrical localizations at the plasma membrane and drive polar auxin transport3,4; however, their structures and transport mechanisms remain largely unknown. Here, we report three inward-facing conformation structures of Arabidopsis thaliana PIN1: the apo state, bound to the natural auxin indole-3-acetic acid (IAA), and in complex with the polar auxin transport inhibitor N-1-naphthylphthalamic acid (NPA). The transmembrane domain of PIN1 shares a conserved NhaA fold5. In the substrate-bound structure, IAA is coordinated by both hydrophobic stacking and hydrogen bonding. NPA competes with IAA for the same site at the intracellular pocket, but with a much higher affinity. These findings inform our understanding of the substrate recognition and transport mechanisms of PINs and set up a framework for future research on directional auxin transport, one of the most crucial processes underlying plant development. Structures of the Arabidopsis thaliana auxin exporter PIN1 in the apo state, bound to the natural auxin or bound to an inhibitor provide insights into the polar auxin transport mechanisms mediated by PIN family transporters.
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Affiliation(s)
- Zhisen Yang
- The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Jing Xia
- The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Jingjing Hong
- CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, University of CAS, Chinese Academy of Sciences (CAS), Shanghai, China
| | - Chenxi Zhang
- The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Hong Wei
- The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Wei Ying
- The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Chunqiao Sun
- The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Lianghanxiao Sun
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yanbo Mao
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Yongxiang Gao
- Cryo-EM Center, Core Facility Center for Life Sciences, University of Science and Technology of China, Hefei, China
| | - Shutang Tan
- MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Jiří Friml
- Institute of Science and Technology Austria (IST Austria), Am Campus 1, Klosterneuburg, Austria
| | - Dianfan Li
- CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, University of CAS, Chinese Academy of Sciences (CAS), Shanghai, China
| | - Xin Liu
- The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China. .,Biomedical Sciences and Health Laboratory of Anhui Province, University of Science and Technology of China, Hefei, China.
| | - Linfeng Sun
- The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China. .,Biomedical Sciences and Health Laboratory of Anhui Province, University of Science and Technology of China, Hefei, China.
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Wang C, Leng S, Tan R, Chai P, Fam J, Teo L, Chin C, Ong C, Baskaran L, Keng F, Low A, Chan M, Wong A, Chua T, Tan S, Lim S, Zhong L. 517 Computed Tomography Coronary Angiography Based Morphological Index Predicts Coronary Ischemia. J Cardiovasc Comput Tomogr 2022. [DOI: 10.1016/j.jcct.2022.06.128] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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22
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Yap H, Loong Y, Raffiee N, Elankovan A, Wang X, Leng S, Ng J, Zhong L, Tan S, Baskaran L. 511 Quantification Of Epicardial Adipose Tissue On Non-Contrast CT: Reproducibility In A Cohort Of 50 Asian Patients. J Cardiovasc Comput Tomogr 2022. [DOI: 10.1016/j.jcct.2022.06.122] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Bangash F, Collinson J, Dungu J, Gedela S, Westwood M, Manisty C, Farwell D, Tan S, Savage H, Vlachos K, Silberbauer J, Calvo J, Hunter R, Schilling R, Srinivasan N. Assessment of optimal thresholds for ventricular scar substrate characterization using the high density grid multipolar mapping catheter. Europace 2022. [DOI: 10.1093/europace/euac053.383] [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
Funding Acknowledgements
Type of funding sources: None.
Background
Voltage thresholds for ventricular scar definition are based on historic data collected using catheters with widely spaced bipoles in the absence of contact force. Modern multipolar mapping catheters employ smaller electrodes and interelectrode spacing that theoretically allows for mapping with increased resolution and reduced far-field electrogram (EGM) component. Despite the advancement in technology, historic cut-offs of <0.5mV for dense scar and 0.5-1.5mV for scar borderzone continue to be used in contemporary electrophysiology.
Purpose
We aimed to assess the optimal voltage cut-offs for ventricular scar substrate characterization using the HD Grid multipolar mapping catheter. Voltage cut-offs were assessed against cardiac MRI derived scar. We compared optimal voltage cut-offs using conventional bipolar sampling, the Best Duplicate Algorithm and with the HD wave solution plus best duplicate algorithm on.
Methods
A multicentre study of twenty patients undergoing VT ablation was conducted. Substrate mapping was performed using the high-density HD-grid multipolar mapping catheter. Bipolar voltage maps were co-registered with cardiac MRI obtained prior to the procedure to assess the voltage characteristics of scar defined by cardiac MRI (CMR) (Figure 1). Pre-procedure contrast enhanced CMR data were analysed using ADAS software (Galgo medical). Data points were collected in regions of scar during (1) HD wave mapping with best duplicate algorithm on(Waveon), (2) Mapping with HD wave off and best duplicate on (Waveoff) and (3) with conventional bipolar mapping (Alloff).
Results
The median bipolar voltage for regions of dense CMR scar using (Waveon) HD wave solution and best duplicate algorithm was 0.27mV (IQR 0.14 – 0.46). The median voltage with (Waveoff) HD wave off was 0.29mV (0.15 – 0.45). The median voltage with (Alloff) HD wave off and best duplicate off was 0.32mV (0.19 – 0.5). ROC analysis using AUC suggested the optimal cut-off for endocardial dense scar using (Waveon) HD wave mapping and best duplicate algorithm was 0.30mV (sensitivity: 69.6%, specificity: 60.74%), (Waveoff) cut-off with the best duplicate and without the HD wave mapping was 0.34mV (sensitivity: 69.78%, specificity: 64.46%) and (Alloff) without wave mapping or best duplication was 0.36mV (sensitivity: 84%, specificity: 52%) Figure 2.
Conclusion
Ventricular substrate characterization with newer mapping technology using narrow electrode spacing and smaller electrode size suggests that traditional voltage cut-offs may need revision for delineation of scar characteristics. Additionally, the ability to repeat sample in a region to obtain the best signal (Best Duplicate), and the ability to obviate the effect of wavefront direction using the HD wave solution omnipolar technology, may further increase the fidelity of scar characterization. This has important implications for mapping VT and characterizing channels in order to identify VT circuits.
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Affiliation(s)
- F Bangash
- Royal Free London NHS Foundation Trust, Cardiology, London, United Kingdom of Great Britain & Northern Ireland
| | - J Collinson
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - J Dungu
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - S Gedela
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - M Westwood
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - C Manisty
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - D Farwell
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - S Tan
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - H Savage
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - K Vlachos
- Onassis Cardiac Surgery Center, Athens, Greece
| | - J Silberbauer
- Sussex Cardiac Centre, Brighton, United Kingdom of Great Britain & Northern Ireland
| | - J Calvo
- Brighton & Sussex University Hospitals N H S Trust, Brighton, United Kingdom of Great Britain & Northern Ireland
| | - R Hunter
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - R Schilling
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - N Srinivasan
- Anglia Ruskin University, Chelmsford, United Kingdom of Great Britain & Northern Ireland
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Collinson J, Bangash F, Dungu J, Gedela S, Westwood M, Manisty C, Farwell D, Tan S, Savage H, Vlachos K, Schilling R, Hunter R, Srinivasan N. Integration of structural and functional data in VT ablation -- SENSE2 protocol mapping. Europace 2022. [DOI: 10.1093/europace/euac053.360] [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: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
We have previously developed the sense protocol functional substrate mapping technique for VT ablation(1). However, functional substrate characterizaiton can involve protracted mapping time.
Purpose
We incorporated the integration of MRI data using ADAS-3D software into the mapping workflow, to integrate structural mapping information into the functional mapping substrate characterization, in order to improve procedural efficiency.
Methods
CMRs were performed in 20 patients with ischemic related VT and VT therapy in the previous 6 months. These were processed with the ADAS-3D software to characterize the extent of ventricular scars and also ADAS corridors which may correlate with VT channels. Focused substrate maps were then performed in patients, guided by the extent of ADAS scar and corridors, looking at the scar substrate in intrinsic rhythm and then functional channels using single extra pacing from the RV at 20ms above ERP (SENSE2 Protocol). Specifically healthy areas 2cm beyond the scar borderzone based on ADAS were not mapped, in order to reduce substrate mapping time and complete geometries were not created. Following delineation of functional channels pacemapping and entrainment mapping were used to confirm targets for ablation.
The ADAS 3D MRI was integrated into the into the VT substrate map on Ensite-Precision with alignment to the aorta, RV and PA (Figure 1). We compared our data with previous functional mapping data without the integration of MRI.
Results
20 patients (age 70 years; 19 male subjects) underwent ablation. Mean EF 28%. Median procedure time was 161 minutes compared with 246 minutes (in our previous study)(p=<0.001) Mean substrate mapping time was 32 mins vs 63 mins (p=<0.001). Mean ablation time was 22 mins vs 32 mins (p=0.11). 85% (17 of 20) patients were free from symptomatic VT/ anti-tachycardia pacing or implantable cardioverter defibrillator shocks at a median follow-up of 171 days. The mean VT burden was reduced from 22 events per patient in the 6 months’ pre-ablation to 1 event per patient in the median follow up period of 171 days post ablation (p=0.02). Mean shocks per-patient burden decreased from 3.5 to 0.08 in the same time period(p=0.03).
Conclusion
The SENSE2 protocol involves the integration of structural and functional data into the VT workflow for substrate characterization. It enables focused substrate maps to be performed without the need for complete geometry to be created in large ventricles. Outcomes compare favourably with our previous data but with significantly shorter procedure times. This streamlined workflow has the potential to improve care in VT ablation by shortening procedure times with similar outcomes which may reduce risks for the patient.
Figure 1: Comparison of Voltage Map with MRI scar & corridors using ADAS
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Affiliation(s)
- J Collinson
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - F Bangash
- Royal Free Hospital, London, United Kingdom of Great Britain & Northern Ireland
| | - J Dungu
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - S Gedela
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - M Westwood
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - C Manisty
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - D Farwell
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - S Tan
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - H Savage
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - K Vlachos
- Onassis Cardiac Surgery Center, Athens, Greece
| | - R Schilling
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - R Hunter
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - N Srinivasan
- Anglia Ruskin University, Chelmsford, United Kingdom of Great Britain & Northern Ireland
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25
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Tan S. EduW 5 Clinical utility of procalcitonin as a diagnostic and prognostic biomarker. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.756] [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: 11/28/2022]
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26
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Wu W, Huang J, Tan S, Wong MCS, Xu W. Screening methods for colorectal cancer in Chinese populations. Hong Kong Med J 2022; 28:183-185. [DOI: 10.12809/hkmj219917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- W Wu
- Global Health Institute, School of Public Health, Fudan University, Shanghai, China
| | - J Huang
- Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - S Tan
- Global Health Institute, School of Public Health, Fudan University, Shanghai, China
| | - Martin CS Wong
- Jockey Club School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - W Xu
- Global Health Institute, School of Public Health, Fudan University, Shanghai, China
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Rabbath X, Pelletier-Galarneau M, Tremblay-Gravel M, Noly P, Racine N, Tan S. Value of Computed Tomography and Fluorodeoxyglucose-Positron Emission Tomography Imaging for Preoperative Screening in Advanced Heart Failure Therapies Candidates. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.1455] [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: 10/18/2022] Open
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28
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Cao N, Erickson D, Tan S, Argento D, Emery R, Kranz M, Rengan R, Ford E, Zeng J. FLASH Mechanisms Track (Oral Presentations) MOUSE ABDOMEN RADIATION USING A 50 MEV PROTON BEAM: FLASH VS. CONVENTIONAL DOSE RATE. Phys Med 2022. [DOI: 10.1016/s1120-1797(22)01463-6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Lu J, He J, Xia H, Yang D, He W, Zhu X, Yan Y, Liu Z, Liu T, Yang J, Tan S, Jiang J, Hou X, Gao H, Ni L. Chemotherapy enhanced by ultrasonic cavitation in prostate cancer by opening the blood-prostate barrier. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00497-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hajný J, Tan S, Friml J. Auxin canalization: From speculative models toward molecular players. Curr Opin Plant Biol 2022; 65:102174. [PMID: 35123880 DOI: 10.1016/j.pbi.2022.102174] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/28/2021] [Accepted: 01/03/2022] [Indexed: 05/12/2023]
Abstract
Among the most fascinated properties of the plant hormone auxin is its ability to promote formation of its own directional transport routes. These gradually narrowing auxin channels form from the auxin source toward the sink and involve coordinated, collective polarization of individual cells. Once established, the channels provide positional information, along which new vascular strands form, for example, during organogenesis, regeneration, or leave venation. The main prerequisite of this still mysterious auxin canalization mechanism is a feedback between auxin signaling and its directional transport. This is manifested by auxin-induced re-arrangements of polar, subcellular localization of PIN-FORMED (PIN) auxin exporters. Immanent open questions relate to how position of auxin source and sink as well as tissue context are sensed and translated into tissue polarization and how cells communicate to polarize coordinately. Recently, identification of the first molecular players opens new avenues into molecular studies of this intriguing example of self-organizing plant development.
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Affiliation(s)
- Jakub Hajný
- Institute of Science and Technology (IST) Austria, 3400, Klosterneuburg, Austria; Laboratory of Growth Regulators, Institute of Experimental Botany of the Czech Academy of Sciences and Faculty of Science of Palacký University, Olomouc, Czech Republic
| | - Shutang Tan
- Institute of Science and Technology (IST) Austria, 3400, Klosterneuburg, Austria
| | - Jiří Friml
- Institute of Science and Technology (IST) Austria, 3400, Klosterneuburg, Austria.
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Mydin M, Splatt L, Abrahams T, Tan S, Pol D, Brown A. Predictive Utility of Reperfusion Criteria in Predicting Occluded Infarct-Related Artery in Patients With ST-Elevation Myocardial Infarction. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.362] [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: 10/16/2022]
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Abstract
Phosphatidylinositol (PtdIns) is one type of phospholipid comprising an inositol head group and two fatty acid chains covalently linked to the diacylglycerol group. In addition to their roles as compositions of cell membranes, phosphorylated PtdIns derivatives, termed phosphoinositides, execute a wide range of regulatory functions. PtdIns can be phosphorylated by various lipid kinases at 3-, 4- and/or 5- hydroxyls of the inositol ring, and the phosphorylated forms, including PtdIns3P, PtdIns4P, PtdIns5P, PtdIns(3,5)P2, PtdIns(4,5)P2, can be reversibly dephosphorylated by distinct lipid phosphatases. Amongst many other types, the SUPPRESSOR OF ACTIN (SAC) family of phosphoinositide phosphatases recently emerged as important regulators in multiple growth and developmental processes in plants. Here, we review recent advances on the biological functions, cellular activities, and molecular mechanisms of SAC domain-containing phosphoinositide phosphatases in plants. With a focus on those studies in the model plant Arabidopsis thaliana together with progresses in other plants, we highlight the important roles of subcellular localizations and substrate preferences of various SAC isoforms in their functions.
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Affiliation(s)
- Yanbo Mao
- MOE Key Laboratory for Cellular Dynamics, School of Life Sciences, Division of Molecular and Cell Biophysics, Division of Life Sciences and Medicine, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Shutang Tan
- MOE Key Laboratory for Cellular Dynamics, School of Life Sciences, Division of Molecular and Cell Biophysics, Division of Life Sciences and Medicine, Hefei National Science Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
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33
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Peng Y, Tan S. TMK: A crucial piece of the acid growth puzzle. Mol Plant 2021; 14:1982-1984. [PMID: 34813950 DOI: 10.1016/j.molp.2021.11.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Affiliation(s)
- Yakun Peng
- MOE Key Laboratory for Cellular Dynamics, Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, and School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Shutang Tan
- MOE Key Laboratory for Cellular Dynamics, Division of Molecular & Cell Biophysics, Hefei National Science Center for Physical Sciences at the Microscale, and School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China.
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Li G, Xu J, Chen S, Tan S, Li H. Pigment concentrations in eggshell and their related gene expressions in uterus of Changshun blue eggshell chickens. Br Poult Sci 2021; 63:421-425. [PMID: 34585996 DOI: 10.1080/00071668.2021.1983919] [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] [Indexed: 10/20/2022]
Abstract
1. The goal of this study was to investigate the colour diversity of egg shells and expression of related genes in the uterus of chickens that produce eggs of different colours.2. Four colour types of Changshun blue-shell chickens, producing dark or light blue, greenish-brown and brown shelled eggs, were selected. The eggshell pigment concentration and colour values in each group were examined. The relative gene expression of solute carrier organic anion transporter family member 1C1 (SLCO1C1), ferrochelatase (FECH), haem oxygenase 1 (HO-1), ovotransferrin (OF) and biliverdin reductase A (BLVRA) in eggshell gland were measured.3. The Δb, ΔE and protoporphyrin in brown and greenish-brown groups were significantly higher in the blue egg group (P < 0.01), whereas ΔL was significantly lower than that in the blue eggs (P < 0.01). There was no significant difference in biliverdin concentration between the brown and blue groups.4. The Δa values, in descending order, were 8.27 ± 2.76 in the brown, -3.79 ± 2.39 in the greenish-brown and -7.29 ± 2.27 in the blue groups, respectively. The relative expression of HO-1 in the greenish-brown and light blue groups was significantly higher than in the dark blue and brown groups. The relative expression of FECH in the light blue group was significantly lower than that in the dark blue, greenish-brown or brown group (P < 0.01). The relative expression of HO-1 and BLVRA genes in the dark blue group was significantly higher than that in the light blue, greenish-brown and the brown group (P < 0.01).5. The Δa might provide a better index than protoporphyrin and biliverdin contents for eggshell colour breeding. Overall, HO-1 as well as BLVRA were important candidate genes for the selection of dark blue eggs.
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Affiliation(s)
- G Li
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - J Xu
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - S Chen
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - S Tan
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China
| | - H Li
- Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, School of Life Science and Engineering, Foshan University, Foshan, China.,Breeding Center, Guizhou Changshun Tinoo's Green Shell Laying Hen Industrial Co. Ltd, Changshun, China.,Research and Development Department, Xianxi Biotechnology Co. Ltd, Foshan, China
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Tan S, Thang YW, Mulley WR, Polkinghorne K, Ramkumar S, Cheng K, Rehmani H, Brown AJ, Moir S, Cameron JD, Nicholls SJ, Mottram PM, Nerlekar N. Long term prognostic utility of exercise capacity in renal transplant candidates. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Pharmacological stress testing is commonly performed for cardiovascular risk stratification in potential renal transplant candidates due to a perceived inability for these patients to exercise. We have previously reported that exercise stress testing is feasible in renal transplant candidates but the prognostic utility of exercise capacity in this patient group is not known.
Purpose
This study prospectively evaluated the effect of exercise capacity on the risk of major adverse cardiovascular events (MACE), defined as a composite of cardiac death, non-fatal myocardial infarction, and stroke, in renal transplant candidates undergoing exercise stress echocardiography (ESE) for pre-transplant cardiovascular assessment.
Methods
We evaluated 898 consecutive patients with chronic kidney disease stage 4/5 who underwent symptom-limited treadmill ESE over 5-year mean follow-up. Exercise capacity was measured by age and sex predicted metabolic equivalents (METs). The primary outcome was achievement of predicted METs with first MACE. Cox proportional hazard multivariable modelling was used to determine MACE predictors with transplantation treated as a time-varying covariate. We also performed secondary analysis using a 7 MET threshold.
Results
There were 106 MACE with an annual cumulative risk of 2.4%. During follow-up, 525 (58%) received transplantation. Achievement of predicted METs (48%) (hazard ratio (HR) 0.49, 95% confidence interval (CI) 0.29–0.82, p=0.007) and transplantation (HR 0.52, 95% CI 0.30–0.91, p=0.02) were independently associated with reduced MACE. Similar results were observed using a 7 MET threshold achieved by 734 (82%) patients. Patients achieving predicted METs had no difference in MACE regardless of subsequent transplantation (HR 0.78, 95% CI 0.32–1.92, p=0.59). Patients who achieved predicted METs and did not receive transplantation had similar outcomes to those that did not achieve predicted METs and received transplantation (HR 0.97, 95% CI 0.42–2.25, p=0.95).
Conclusions
Exercise capacity is associated with reduced long-term MACE in renal transplant candidates undergoing ESE for pre-transplant cardiovascular assessment. Achievement of age and sex predicted METs confers excellent prognosis independent of subsequent transplantation.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- S Tan
- Monash Heart, Melbourne, Australia
| | | | | | | | | | - K Cheng
- Monash Heart, Melbourne, Australia
| | | | | | - S Moir
- Monash Heart, Melbourne, Australia
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Narasimhan M, Gallei M, Tan S, Johnson A, Verstraeten I, Li L, Rodriguez L, Han H, Himschoot E, Wang R, Vanneste S, Sánchez-Simarro J, Aniento F, Adamowski M, Friml J. Corrigendum to: Systematic analysis of specific and nonspecific auxin effects on endocytosis and trafficking. Plant Physiol 2021; 187:1027. [PMID: 34608981 PMCID: PMC8491063 DOI: 10.1093/plphys/kiab380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
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37
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Dickinson KJ, Caldwell KE, Graviss EA, Nguyen DT, Awad MM, Tan S, Winer JH, Pei KY. Assessing learner engagement with virtual educational events: Development of the Virtual In-Class Engagement Measure (VIEM). Am J Surg 2021; 222:1044-1049. [PMID: 34602277 DOI: 10.1016/j.amjsurg.2021.09.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/22/2021] [Accepted: 09/22/2021] [Indexed: 11/17/2022]
Abstract
BACKGROUND The COVID-19 pandemic has necessitated virtual education, but effects on learner engagement are unknown. We developed a virtual in-class engagement measure (VIEM) to assess learner engagement in online surgical education events. METHODS Using the STROBE, an observer collected tool to document student engagement, as a template an ASE committee workgroup developed the VIEM. The VIEM had two parts: observer assessment and learner self-assessment of engagement. Trained observers collected engagement data from two institutions using the VIEM. Surgical attendings, fellows and residents were observed during virtual learning events. Educator attitudes towards online teaching were also assessed via survey. RESULTS 22 events with 839 learners were observed. VIEM distinguished between sessions with low and high engagement. 20% of learners pretended to participate. Half of instructors were comfortable with virtual teaching, but only 1/3 believed was as effective as in-person. 2/3 of teachers believed video learners were more engaged than audio learners. CONCLUSIONS Virtual platforms do not automatically translate into increased engagement. Standard tools such as VIEM may help with assessment of engagement during virtual education.
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Affiliation(s)
- K J Dickinson
- Department of Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA; Department of Surgery, Houston Methodist Hospital, Houston, TX, USA; Department of Interprofessional Education, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
| | - K E Caldwell
- Department of Surgery, Washington University in St Louis, St Louis, MO, USA
| | - E A Graviss
- Department of Surgery, Houston Methodist Hospital, Houston, TX, USA; Department of Pathology and Genomic Medicine, Houston Methodist Research Institute, Houston, TX, USA
| | - D T Nguyen
- Department of Pathology and Genomic Medicine, Houston Methodist Research Institute, Houston, TX, USA
| | - M M Awad
- Department of Surgery, Washington University in St Louis, St Louis, MO, USA
| | - S Tan
- Department of Surgery, University of Florida Health, Gainesville, FL, USA
| | - J H Winer
- Department of Surgery, Emory University, Atlanta, GA, USA
| | - K Y Pei
- Department of Graduate Medical Education, Parkview Health, Fort Wayne, IN, USA
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Xiong J, Yang J, Li W, Xiong H, Liu G, Wu F, Fan N, Zeng X, Huang F, Yang L, Tu X, Shi C, Yi B, Ye J, Li P, Tang C, Huang J, Hou P, Zang W, Tan S. 1411P A prospective, multicenter, real-world study of apatinib in the treatment of gastric cancer. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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39
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Hatirnaz S, Hatirnaz E, Dahan M, Ata B, Basbug A, Hatirnaz K, Tan S. P–709 Dual stimulation in-vitro-maturation (Duostim IVM) for overcoming oocyte maturation arrest, resulting in embryo transfer and livebirth. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.708] [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
Study question
Does luteal phase followed by follicular phase letrozole priming and dual oocyte retrieval for in-vitro maturation (IVM) overcome oocyte maturation arrest (OMA)?
Summary answer
Oocyte maturation, fertilization,embryo cryopreservation and livebirth can be achieved with letrozole priming IVM in rare cases of OMA.
What is known already
OMA is an intractable problem resulting in only immature oocytes being collected and to date no succesful treatment exists. Attempts to mature oocytes collected in stimulated IVF cycles with OMA have so far failed. Cases with OMA can be due to intrinsic oocyte defects, intrafollicular factors or resistance to stimulation.
Study design, size, duration
Six women with OMA in ≥ 2 prior stimulated IVF cycles were treated between March 2019 and December 2020.
Participants/materials, setting, methods
Participants had total of 18 (range 2 - 6) prior IVF cycles yielding only 166 immature oocytes. Letrozole 5mg was given days 15–18 of ovulatory cycle; SC decapeptyl 0.1mg trigger given at follicles 12 mm, 38 hours<OPU. After menstruation, letrozole 5mg days 3–7; SChCG 250ug when follicles=12 mm 38 hours<OPU. After in-vitro-maturation oocytes reaching MII were fertilized. Embryos from luteal collection were frozen and fresh embryo transfer was attempted after follicular phase collection.
Main results and the role of chance
Six women underwent DuoStim IVM, median (quartiles) 3.5 (0 - 9) GV and 0.5 (0 - 2) MI oocytes were collected from luteal phase OC and 0 (0 - 0) GV and 2(0 – 4.5) MI oocytes were collected from follicular phase OC. They had a total of 166 immature oocytes collected in prior IVF cycles. There were no MII oocytes at the time of collection in any cycles.0 (0 – 3.5) oocytes matured from luteal phase OC and 1 (0 – 4) from follicular phase OC. 0 (0 – 1.5) embryos were available from luteal phase and 0 (0 - 2) from follicular phase OC.Two subjects (29 and 33 years old) underwent fresh DET and the 29 year old with 2 previous failed IVF cycles achieved a livebirth (50% per ET and 16.7% per started cycle). None of the women who did not have an embryo for fresh transfer from the follicular phase collection had an embryo from the luteal phase collection. The same 29 year old has 2 luteal phase and 2 more follicular phase embryos vitrified.
Limitations, reasons for caution
OMA is a rare condition with a variety of etiologies. Different etiologies can require different managements.
Wider implications of the findings: It may be possible to overcome OMA with letrozole IVM in rare cases. This case is the first recorded live birth. The value of dual stimulation overcoming OMA remains uncertain.
Trial registration number
This study is approved by the local ethical commitee of Medicana Samsun International Hospital by a Grant number of 02/05.02.2020: registration is not required due to retrospective status
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Affiliation(s)
- S Hatirnaz
- Medicana Samsun International Hospital, IVF-IVM Unit, Samsun, Turkey
| | - E Hatirnaz
- Medicana Samsun International Hospital, IVF-IVM Unit, Samsun, Turkey
| | - M Dahan
- Mc Gill University-School of Medicine, Fertility Unit, Montreal-Quebec, Canada
| | - B Ata
- Koç University-School of Medicine, Obstetrics and Gynecology-IVF Unit, Istanbul, Turkey
| | - A Basbug
- Düzce University-School of Medicine, Obstetrics and Gynecology, Düzce, Turkey
| | - K Hatirnaz
- Ondokuzmayıs University-Faculty of Science, Molecular Biology and Genetics, Samsun, Turkey
| | - S Tan
- Originelle Women’s Health Center, Obstetric and Gynecology, Montreal-Quebec, Canada
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40
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Kong W, Tan S, Zhao Q, Lin DL, Xu ZH, Friml J, Xue HW. mRNA surveillance complex PELOTA-HBS1 regulates phosphoinositide-dependent protein kinase1 and plant growth. Plant Physiol 2021; 186:2003-2020. [PMID: 33930167 PMCID: PMC8331137 DOI: 10.1093/plphys/kiab199] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Accepted: 04/15/2021] [Indexed: 05/06/2023]
Abstract
The quality control system for messenger RNA (mRNA) is fundamental for cellular activities in eukaryotes. To elucidate the molecular mechanism of 3'-phosphoinositide-dependent protein kinase1 (PDK1), a master regulator that is essential throughout eukaryotic growth and development, we employed a forward genetic approach to screen for suppressors of the loss-of-function T-DNA insertion double mutant pdk1.1 pdk1.2 in Arabidopsis thaliana. Notably, the severe growth attenuation of pdk1.1 pdk1.2 was rescued by sop21 (suppressor of pdk1.1 pdk1.2), which harbors a loss-of-function mutation in PELOTA1 (PEL1). PEL1 is a homolog of mammalian PELOTA and yeast (Saccharomyces cerevisiae) DOM34p, which each form a heterodimeric complex with the GTPase HBS1 (HSP70 SUBFAMILY B SUPPRESSOR1, also called SUPERKILLER PROTEIN7, SKI7), a protein that is responsible for ribosomal rescue and thereby assures the quality and fidelity of mRNA molecules during translation. Genetic analysis further revealed that a dysfunctional PEL1-HBS1 complex failed to degrade the T-DNA-disrupted PDK1 transcripts, which were truncated but functional, and thus rescued the growth and developmental defects of pdk1.1 pdk1.2. Our studies demonstrated the functionality of a homologous PELOTA-HBS1 complex and identified its essential regulatory role in plants, providing insights into the mechanism of mRNA quality control.
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Affiliation(s)
- Wei Kong
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Shutang Tan
- School of Life Sciences, Division of Life Sciences and Medicine, and Division of Molecular & Cell Biophysics, Hefei National Science Centre for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230027, China
- Institute of Science and Technology Austria (IST Austria), Am Campus 1, Klosterneuburg, 3400, Austria
| | - Qing Zhao
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - De-Li Lin
- Joint Centre for Single Cell Biology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhi-Hong Xu
- National Key Laboratory of Plant Molecular Genetics, CAS Centre for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jiří Friml
- Institute of Science and Technology Austria (IST Austria), Am Campus 1, Klosterneuburg, 3400, Austria
| | - Hong-Wei Xue
- Joint Centre for Single Cell Biology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- Author for communication:
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Narasimhan M, Gallei M, Tan S, Johnson A, Verstraeten I, Li L, Rodriguez L, Han H, Himschoot E, Wang R, Vanneste S, Sánchez-Simarro J, Aniento F, Adamowski M, Friml J. Systematic analysis of specific and nonspecific auxin effects on endocytosis and trafficking. Plant Physiol 2021; 186:1122-1142. [PMID: 33734402 PMCID: PMC8195513 DOI: 10.1093/plphys/kiab134] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 01/23/2021] [Indexed: 05/08/2023]
Abstract
The phytohormone auxin and its directional transport through tissues are intensively studied. However, a mechanistic understanding of auxin-mediated feedback on endocytosis and polar distribution of PIN auxin transporters remains limited due to contradictory observations and interpretations. Here, we used state-of-the-art methods to reexamine the auxin effects on PIN endocytic trafficking. We used high auxin concentrations or longer treatments versus lower concentrations and shorter treatments of natural indole-3-acetic acid (IAA) and synthetic naphthalene acetic acid (NAA) auxins to distinguish between specific and nonspecific effects. Longer treatments of both auxins interfere with Brefeldin A-mediated intracellular PIN2 accumulation and also with general aggregation of endomembrane compartments. NAA treatment decreased the internalization of the endocytic tracer dye, FM4-64; however, NAA treatment also affected the number, distribution, and compartment identity of the early endosome/trans-Golgi network, rendering the FM4-64 endocytic assays at high NAA concentrations unreliable. To circumvent these nonspecific effects of NAA and IAA affecting the endomembrane system, we opted for alternative approaches visualizing the endocytic events directly at the plasma membrane (PM). Using total internal reflection fluorescence microscopy, we saw no significant effects of IAA or NAA treatments on the incidence and dynamics of clathrin foci, implying that these treatments do not affect the overall endocytosis rate. However, both NAA and IAA at low concentrations rapidly and specifically promoted endocytosis of photo-converted PIN2 from the PM. These analyses identify a specific effect of NAA and IAA on PIN2 endocytosis, thus, contributing to its polarity maintenance and furthermore illustrate that high auxin levels have nonspecific effects on trafficking and endomembrane compartments.
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Affiliation(s)
| | - Michelle Gallei
- Institute of Science and Technology (IST), Klosterneuburg 3400, Austria
| | - Shutang Tan
- Institute of Science and Technology (IST), Klosterneuburg 3400, Austria
| | - Alexander Johnson
- Institute of Science and Technology (IST), Klosterneuburg 3400, Austria
| | - Inge Verstraeten
- Institute of Science and Technology (IST), Klosterneuburg 3400, Austria
| | - Lanxin Li
- Institute of Science and Technology (IST), Klosterneuburg 3400, Austria
| | - Lesia Rodriguez
- Institute of Science and Technology (IST), Klosterneuburg 3400, Austria
| | - Huibin Han
- Institute of Science and Technology (IST), Klosterneuburg 3400, Austria
| | - Ellie Himschoot
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Gent, Belgium
| | - Ren Wang
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Gent, Belgium
| | - Steffen Vanneste
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Gent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Judit Sánchez-Simarro
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universitat de Valencia, 46100 Burjassot, Spain
| | - Fernando Aniento
- Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universitat de Valencia, 46100 Burjassot, Spain
| | - Maciek Adamowski
- Institute of Science and Technology (IST), Klosterneuburg 3400, Austria
| | - Jiří Friml
- Institute of Science and Technology (IST), Klosterneuburg 3400, Austria
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42
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Elerian S, Singh T, Jagodzinski NA, Norris R, Tan S, Power D, Jones J, Rajaratnam V. 173 Early Results of a Variable-Angle Volar Locking Plate for Distal Radius Fractures: A Bi-Centre Study. Br J Surg 2021. [DOI: 10.1093/bjs/znab134.122] [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]
Abstract
Abstract
Introduction
This study examines the clinical, functional and radiological outcomes of distal radius fracture fixation with the Aptus® (Medartis, Pennsylvania) locking plate in order to determine its efficacy and to identify notable findings related to treatment variations.
Method
This is a retrospective bi-centre study collecting patient details from a District General Hospital and a Regional Hand Unit. We assessed 61 consecutive patients with distal radius fractures (AO grade A = 19, B = 9, C = 33) fixed using Aptus® plate with a minimum of six months follow-up. Outcome measures included the DASH score, wrist range of movement and grip strength, and complications. Radiographs were reviewed to assess restoration of anatomy and union.
Results
All but two fractures united within six weeks. Mean ranges of movement were only mildly restricted compared to the normal wrist (flexion/extension = 102°; radial/ulna deviation = 53°; pronation/supination = 169°). Mean postoperative grip strength was 23.8kg which was comparable to the contralateral side at 31.5kg. The mean DASH score was 18.2. Seven patients had screws misplaced outside the distal radius although three of these remained asymptomatic.
Conclusions
Variable-angle locking systems benefit from flexibility of implant positioning and may allow enhanced inter-fragmentary reduction for accurate fixation of intra-articular fractures.
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Affiliation(s)
- S Elerian
- Sandwell & West Birmingham NHS Trust Hospitals, Birmingham, United Kingdom
| | - T Singh
- Sandwell & West Birmingham NHS Trust Hospitals, Birmingham, United Kingdom
- Birmingham University Hospitals, Birmingham, United Kingdom
| | | | - R Norris
- Peterborough District Hospital, Cambridgeshire, United Kingdom
| | - S Tan
- Birmingham University Hospitals, Birmingham, United Kingdom
| | - D Power
- Birmingham University Hospitals, Birmingham, United Kingdom
| | - J Jones
- Peterborough District Hospital, Cambridgeshire, United Kingdom
| | - V Rajaratnam
- Birmingham University Hospitals, Birmingham, United Kingdom
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43
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Tan S, Hoggett L, Choudry Q, Aithal S, Bokhari A. P22: CONSERVATIVE MANAGEMENT OF NECK OF FEMUR FRACTURES. Br J Surg 2021. [DOI: 10.1093/bjs/znab117.107] [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]
Abstract
Abstract
Introduction
According to NICE CG124, the gold standard of treatment for neck of femur (NOF) fractures is operative management on the day or day after admission. In practice, this is not always achievable depending on various factors, e.g. patient preference, clinical condition and theatre availability, with a further subset of patients undergoing conservative management.
Method
A retrospective analysis was performed on all NOF fractures managed non-operatively at a single centre from January 2017 to August 2019 by case notes analysis and review of radiographical images. Demographics, fracture type, pre-fracture mobility status, co-morbidities, mortality and Nottingham Hip Fracture Score (NHFS) are reported. Where applicable, our dataset is correlated with the National Hip Fracture Database for comparison.
Result
24 patients were included in the study period, with a mean age of 79.9 years (range 54-99 years) and male:female ratio of 0.85:1. The mean NHFS (n=18) was 5.7 (range 3-8) and at least 62.5% (n=15) were deemed unfit for surgery or arrested pre-operatively. Conservatively managed NOF fractures are associated with a 30-day mortality of 41.7% compared to the centre average of 8.2% and national average of 6.9% for all NOF fractures. Overall mortality within 1 year is 95.5% (n=22).
Conclusion
Our study confirms that the conservative management of NOF fractures is associated with high mortality, however it may be the only treatment option acceptable in patients who are limited by unfavourable clinical conditions. Therefore, the decision for conservative management in NOF fractures requires careful consideration with the need for an established decision-making pathway.
Take-home message
The conservative management of neck of femur fractures is associated with high mortality, therefore requires careful consideration with the need for an established decision-making pathway.
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Affiliation(s)
- S Tan
- East Lancashire Hospitals NHS Trust
| | | | | | - S Aithal
- East Lancashire Hospitals NHS Trust
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44
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Glanc M, Van Gelderen K, Hoermayer L, Tan S, Naramoto S, Zhang X, Domjan D, Včelařová L, Hauschild R, Johnson A, de Koning E, van Dop M, Rademacher E, Janson S, Wei X, Molnár G, Fendrych M, De Rybel B, Offringa R, Friml J. AGC kinases and MAB4/MEL proteins maintain PIN polarity by limiting lateral diffusion in plant cells. Curr Biol 2021; 31:1918-1930.e5. [PMID: 33705718 PMCID: PMC8112251 DOI: 10.1016/j.cub.2021.02.028] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/22/2021] [Accepted: 02/12/2021] [Indexed: 12/22/2022]
Abstract
Polar subcellular localization of the PIN exporters of the phytohormone auxin is a key determinant of directional, intercellular auxin transport and thus a central topic of both plant cell and developmental biology. Arabidopsis mutants lacking PID, a kinase that phosphorylates PINs, or the MAB4/MEL proteins of unknown molecular function display PIN polarity defects and phenocopy pin mutants, but mechanistic insights into how these factors convey PIN polarity are missing. Here, by combining protein biochemistry with quantitative live-cell imaging, we demonstrate that PINs, MAB4/MELs, and AGC kinases interact in the same complex at the plasma membrane. MAB4/MELs are recruited to the plasma membrane by the PINs and in concert with the AGC kinases maintain PIN polarity through limiting lateral diffusion-based escape of PINs from the polar domain. The PIN-MAB4/MEL-PID protein complex has self-reinforcing properties thanks to positive feedback between AGC kinase-mediated PIN phosphorylation and MAB4/MEL recruitment. We thus uncover the molecular mechanism by which AGC kinases and MAB4/MEL proteins regulate PIN localization and plant development. MAB4/MEL proteins are recruited to the plasma membrane by PINs PINs, MAB4/MELs, and AGC kinases directly interact in a multiprotein complex PIN phosphorylation and MAB4/MEL recruitment form a positive feedback loop MAB4/MELs and AGC kinases maintain PIN polarity by limiting PIN lateral diffusion
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Affiliation(s)
- Matouš Glanc
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria; Department of Experimental Plant Biology, Faculty of Science, Charles University, 12844 Prague, Czechia; Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium; VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Kasper Van Gelderen
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, 2333 BE Leiden, the Netherlands; Plant Ecophysiology, Institute of Environmental Biology, Utrecht University, 3584 CH Utrecht, the Netherlands
| | - Lukas Hoermayer
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria
| | - Shutang Tan
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria
| | - Satoshi Naramoto
- Department of Biological Sciences, Faculty of Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan
| | - Xixi Zhang
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria
| | - David Domjan
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria
| | - Ludmila Včelařová
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria
| | - Robert Hauschild
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria
| | - Alexander Johnson
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria
| | - Edward de Koning
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, 2333 BE Leiden, the Netherlands
| | - Maritza van Dop
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, 2333 BE Leiden, the Netherlands
| | - Eike Rademacher
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, 2333 BE Leiden, the Netherlands
| | - Stef Janson
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, 2333 BE Leiden, the Netherlands
| | - Xiaoyu Wei
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, 2333 BE Leiden, the Netherlands
| | - Gergely Molnár
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria; Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, (BOKU), 1190 Vienna, Austria
| | - Matyáš Fendrych
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria; Department of Experimental Plant Biology, Faculty of Science, Charles University, 12844 Prague, Czechia
| | - Bert De Rybel
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium; VIB Center for Plant Systems Biology, 9052 Ghent, Belgium
| | - Remko Offringa
- Plant Developmental Genetics, Institute of Biology Leiden, Leiden University, 2333 BE Leiden, the Netherlands.
| | - Jiří Friml
- Institute of Science and Technology Austria (IST Austria), 3400 Klosterneuburg, Austria.
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Shen X, Sha W, Yang C, Pan Q, Cohen T, Cheng S, Cai Q, Kan X, Zong P, Zeng Z, Tan S, Liang R, Bai L, Xia J, Wu S, Sun P, Wu G, Cai C, Wang X, Ai K, Liu J, Yuan Z. Continuity of TB services during the COVID-19 pandemic in China. Int J Tuberc Lung Dis 2021; 25:81-83. [PMID: 33384053 DOI: 10.5588/ijtld.20.0632] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- X Shen
- Division of TB and HIV/AIDS Prevention, Shanghai Municipal Center for Disease Control and Prevention, Shanghai
| | - W Sha
- Department of Tuberculosis, Shanghai Pulmonary Hospital, Shanghai Clinical Research Center for infectious disease, Shanghai
| | - C Yang
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, CT, USA
| | - Q Pan
- Division of TB and HIV/AIDS Prevention, Shanghai Municipal Center for Disease Control and Prevention, Shanghai
| | - T Cohen
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, CT, USA
| | - S Cheng
- Chinese Center for Diseases Control and Prevention, Beijing
| | - Q Cai
- Division of Tuberculosis, Zhejiang Provincial Integrated Chinese and Western Medicine Hospital, Hangzhou, Zhejiang Province
| | - X Kan
- Department of Scientific Research and Education, Anhui Chest Hospital, Hefei, Anhui Province
| | - P Zong
- Division of Tuberculosis, Jiangxi Chest Hospital, Nanchang, Jiangxi Province
| | - Z Zeng
- Division of Tuberculosis, The Fifth People´s Hospital, Gangzhou, Jiangxi Province
| | - S Tan
- Department of Tuberculosis, Guangzhou Chest Hospital. Guangzhou, Guangdong Province
| | - R Liang
- Department of Tuberculosis, Henan Provincial Chest Hospital, Zhengzhou, Henan Province
| | - L Bai
- Hunan Chest Hospital, Changsha, Hunan Province
| | - J Xia
- South Five Disease Zones, Wuhan Jinyintan Hospital, Wuhan, Hubei Province
| | - S Wu
- Hebei Province Chest Hospital, Shijiazhuang, Hebei Province
| | - P Sun
- Tuberculosis Hospital of Jilin Province, Changchun, Jilin Province
| | - G Wu
- Department of Tuberculosis, Public Health Clinical Center of Chengdu, Chengdu, Sichuan Province
| | - C Cai
- Tuberculosis Diagnosis and Treatment Quality Control Center, Guiyang Public Health Treatment Center, Zunyi Medical University, Zunyi, Guizhou Province
| | - X Wang
- The Fourth People´s Hospital of Ningxia Hui Autonomous Region, Yinchuan, Ningxia Hui Autonomous Region, China
| | - K Ai
- Department of Tuberculosis, Shanghai Pulmonary Hospital, Shanghai Clinical Research Center for infectious disease, Shanghai
| | - J Liu
- Chinese Center for Diseases Control and Prevention, Beijing
| | - Z Yuan
- Division of TB and HIV/AIDS Prevention, Shanghai Municipal Center for Disease Control and Prevention, Shanghai
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46
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Ötvös K, Marconi M, Vega A, O’Brien J, Johnson A, Abualia R, Antonielli L, Montesinos JC, Zhang Y, Tan S, Cuesta C, Artner C, Bouguyon E, Gojon A, Friml J, Gutiérrez RA, Wabnik K, Benková E. Modulation of plant root growth by nitrogen source-defined regulation of polar auxin transport. EMBO J 2021; 40:e106862. [PMID: 33399250 PMCID: PMC7849315 DOI: 10.15252/embj.2020106862] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/27/2020] [Accepted: 11/06/2020] [Indexed: 01/01/2023] Open
Abstract
Availability of the essential macronutrient nitrogen in soil plays a critical role in plant growth, development, and impacts agricultural productivity. Plants have evolved different strategies for sensing and responding to heterogeneous nitrogen distribution. Modulation of root system architecture, including primary root growth and branching, is among the most essential plant adaptions to ensure adequate nitrogen acquisition. However, the immediate molecular pathways coordinating the adjustment of root growth in response to distinct nitrogen sources, such as nitrate or ammonium, are poorly understood. Here, we show that growth as manifested by cell division and elongation is synchronized by coordinated auxin flux between two adjacent outer tissue layers of the root. This coordination is achieved by nitrate-dependent dephosphorylation of the PIN2 auxin efflux carrier at a previously uncharacterized phosphorylation site, leading to subsequent PIN2 lateralization and thereby regulating auxin flow between adjacent tissues. A dynamic computer model based on our experimental data successfully recapitulates experimental observations. Our study provides mechanistic insights broadening our understanding of root growth mechanisms in dynamic environments.
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Affiliation(s)
- Krisztina Ötvös
- Institute of Science and Technology (IST) AustriaKlosterneuburgAustria
- Bioresources UnitCenter for Health & BioresourcesAIT Austrian Institute of Technology GmbHTullnAustria
| | - Marco Marconi
- Centro de Biotecnología y Genómica de Plantas (CBGP, UPM‐INIA) Universidad Politécnica de Madrid (UPM)—Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)MadridSpain
| | - Andrea Vega
- Pontifical Catholic University of ChileSantiagoChile
| | - Jose O’Brien
- Pontifical Catholic University of ChileSantiagoChile
| | - Alexander Johnson
- Institute of Science and Technology (IST) AustriaKlosterneuburgAustria
| | - Rashed Abualia
- Institute of Science and Technology (IST) AustriaKlosterneuburgAustria
| | - Livio Antonielli
- Bioresources UnitCenter for Health & BioresourcesAIT Austrian Institute of Technology GmbHTullnAustria
| | | | - Yuzhou Zhang
- Institute of Science and Technology (IST) AustriaKlosterneuburgAustria
| | - Shutang Tan
- Institute of Science and Technology (IST) AustriaKlosterneuburgAustria
| | - Candela Cuesta
- Institute of Science and Technology (IST) AustriaKlosterneuburgAustria
| | - Christina Artner
- Institute of Science and Technology (IST) AustriaKlosterneuburgAustria
| | | | - Alain Gojon
- BPMPCNRSINRAEInstitut AgroUniv MontpellierMontpellierFrance
| | - Jirí Friml
- Institute of Science and Technology (IST) AustriaKlosterneuburgAustria
| | | | - Krzysztof Wabnik
- Centro de Biotecnología y Genómica de Plantas (CBGP, UPM‐INIA) Universidad Politécnica de Madrid (UPM)—Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA)MadridSpain
| | - Eva Benková
- Institute of Science and Technology (IST) AustriaKlosterneuburgAustria
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Yang WW, Li L, Tan S, Liu ZY, Jiang Y. Correlation analysis of Helicobacter pylori infection, inflammatory activity and serum high sensitivity C-reactive protein level in elderly patients with chronic gastritis. J BIOL REG HOMEOS AG 2021; 34:1897-1900. [PMID: 33169600 DOI: 10.23812/20-353-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- W W Yang
- Department of Gastroenterology, Guizhou Second Provincial People's Hospital, Guiyang City, Guizhou Province, China
| | - L Li
- Department of Pathology, Guizhou Second Provincial People's Hospital, Guiyang City, Guizhou Province, China
| | - S Tan
- Department of Gastroenterology, Guizhou Second Provincial People's Hospital, Guiyang City, Guizhou Province, China
| | - Z Y Liu
- Department of Gastroenterology, Guizhou Second Provincial People's Hospital, Guiyang City, Guizhou Province, China
| | - Y Jiang
- Department of Gastroenterology, Guizhou Second Provincial People's Hospital, Guiyang City, Guizhou Province, China
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Tan S, Luschnig C, Friml J. Pho-view of Auxin: Reversible Protein Phosphorylation in Auxin Biosynthesis, Transport and Signaling. Mol Plant 2021; 14:151-165. [PMID: 33186755 DOI: 10.1016/j.molp.2020.11.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/07/2020] [Accepted: 11/07/2020] [Indexed: 05/24/2023]
Abstract
The phytohormone auxin plays a central role in shaping plant growth and development. With decades of genetic and biochemical studies, numerous core molecular components and their networks, underlying auxin biosynthesis, transport, and signaling, have been identified. Notably, protein phosphorylation, catalyzed by kinases and oppositely hydrolyzed by phosphatases, has been emerging to be a crucial type of post-translational modification, regulating physiological and developmental auxin output at all levels. In this review, we comprehensively discuss earlier and recent advances in our understanding of genetics, biochemistry, and cell biology of the kinases and phosphatases participating in auxin action. We provide insights into the mechanisms by which reversible protein phosphorylation defines developmental auxin responses, discuss current challenges, and provide our perspectives on future directions involving the integration of the control of protein phosphorylation into the molecular auxin network.
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Affiliation(s)
- Shutang Tan
- Institute of Science and Technology Austria (IST Austria), Am Campus 1, 3400 Klosterneuburg, Austria
| | - Christian Luschnig
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Muthgasse 18, 1190 Wien, Austria
| | - Jiří Friml
- Institute of Science and Technology Austria (IST Austria), Am Campus 1, 3400 Klosterneuburg, Austria.
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Tan S, Moir S, Seneviratne S. Connective Tissue Disease Associated Myocarditis Manifesting as Myocardial Hypoattenuation on Coronary CTA. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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50
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Goel V, Spear E, Cameron W, Thakur U, Sultana N, Chan J, Tan S, Brown A, Nicholls S, Nerlekar N. Is Epicardial Adipose Tissue Associated With Breast Arterial Calcification? Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.220] [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: 11/28/2022]
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