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Wang K, Li G, Yang Z, Yang F, Sun Y, Duan G, Sun W, Zhou K, He J, Dai F. Compound Chinese medicine (F1) improves spleen deficiency diarrhea by protecting the intestinal mucosa and regulating the intestinal flora. Front Microbiol 2024; 14:1292082. [PMID: 38293559 PMCID: PMC10826701 DOI: 10.3389/fmicb.2023.1292082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/22/2023] [Indexed: 02/01/2024] Open
Abstract
Compound Chinese medicine (F1) is a traditional prescription in Chinese medicine that is commonly used to treat spleen deficiency diarrhea (SDD). It has demonstrated remarkable effectiveness in clinical practice. However, the precise mechanism by which it exerts its antidiarrheal effect is still unclear. This study aimed at investigating the antidiarrheal efficacy and mechanism of F1 on senna-induced secretory diarrhea (SDD). Senna was utilized to induce the development of a mouse model of senna-induced secretory diarrhea (SDD) in order to observe the rate of diarrhea, diarrhea index, blood biochemistry, and histopathological changes in the small intestine. Additionally, the levels of sodium and hydrogen exchange protein 3 (NHE3) and short-chain fatty acids (SCFAs) were determined using enzyme-linked immunosorbent assay (ELISA). The impact of F1 on the senna-induced SDD mouse models was evaluated by monitoring changes in the gut microbiota through 16S rRNA (V3-V4) sequencing. The results demonstrated that F1, a traditional Chinese medicine, effectively increased the body weight of SDD mice and reduced the incidence of diarrhea and diarrhea index. Additionally, F1 restored liver and kidney function, reduced the infiltration of inflammatory cells in intestinal tissue, and promoted the growth of intestinal villi. Furthermore, F1 was found to enhance the expression of NHE3 and SCFAs. It also increased the abundance of Firmicutes and Lactobacillus species, while decreasing the abundance of Proteobacteria and Shigella.
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Affiliation(s)
- Kang Wang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Guanzong Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Zhi Yang
- Animal Disease Prevention and Control Center of Chuxiong, Chuxiong, China
| | - Fumei Yang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Yulin Sun
- Veterinarian, Kunming Technical Contract Accreditation and Registration Station, Kunming, China
| | - Gang Duan
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Wang Sun
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Ke Zhou
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Jun He
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
| | - Feiyan Dai
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, China
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2
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Liu Q, Dai F, Zhu H, Yang H, Huang Y, Jiang L, Tang X, Deng L, Song L. Deep learning for the early identification of periodontitis: a retrospective, multicentre study. Clin Radiol 2023; 78:e985-e992. [PMID: 37734974 DOI: 10.1016/j.crad.2023.08.017] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 08/15/2023] [Accepted: 08/21/2023] [Indexed: 09/23/2023]
Abstract
AIM To develop a deep-learning model to help general dental practitioners diagnose periodontitis accurately and at an early stage. MATERIALS AND METHODS First, the panoramic radiographs (PARs) from the Second Affiliated Hospital of Nanchang University were input into the convolutional neural network (CNN) architecture to establish the PAR-CNN model for healthy controls and periodontitis patients. Then, the PARs from the Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine were included in the second testing set to validate the effectiveness of the model with data from two centres. Heat maps were produced using a gradient-weighted class activation mapping method to visualise the regions of interest of the model. The accuracy and time required to read the PARs were compared between the model, periodontal experts, and general dental practitioners. Areas under the receiver operating characteristic curve (AUCs) were used to evaluate the performance of the model. RESULTS The AUC of the PAR-CNN model was 0.843, and the AUC of the second test set was 0.793. The heat map showed that the regions of interest predicted by the model were periodontitis bone lesions. The accuracy of the model, periodontal experts, and general dental practitioners was 0.800, 0.813, and 0.693, respectively. The time required to read each PAR by periodontal experts (6.042 ± 1.148 seconds) and general dental practitioners (13.105 ± 3.153 seconds), which was significantly longer than the time required by the model (0.027 ± 0.002 seconds). CONCLUSION The ability of the CNN model to diagnose periodontitis approached the level of periodontal experts. Deep-learning methods can assist general dental practitioners to diagnose periodontitis quickly and accurately.
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Affiliation(s)
- Q Liu
- Center of Stomatology, The Second Affiliated Hospital of Nanchang University, Nanchang, China; The Institute of Periodontal Disease, Nanchang University, Nanchang, China
| | - F Dai
- Center of Stomatology, The Second Affiliated Hospital of Nanchang University, Nanchang, China; The Institute of Periodontal Disease, Nanchang University, Nanchang, China
| | - H Zhu
- Center of Stomatology, The Second Affiliated Hospital of Nanchang University, Nanchang, China; The Institute of Periodontal Disease, Nanchang University, Nanchang, China
| | - H Yang
- The Second Clinical College, Medical College of Nanchang University, Nanchang, China
| | - Y Huang
- Center of Stomatology, The Second Affiliated Hospital of Nanchang University, Nanchang, China; The Institute of Periodontal Disease, Nanchang University, Nanchang, China
| | - L Jiang
- Department of Stomatology, The Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang, China
| | - X Tang
- College of Basic Medical Science, Nanchang University, Nanchang, China
| | - L Deng
- The Institute of Periodontal Disease, Nanchang University, Nanchang, China; School of Public Health, Nanchang University, Nanchang, China; Jiangxi Provincial Key Laboratory of Preventive Medicine, Nanchang University, Nanchang, China.
| | - L Song
- Center of Stomatology, The Second Affiliated Hospital of Nanchang University, Nanchang, China; The Institute of Periodontal Disease, Nanchang University, Nanchang, China.
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3
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Luque R, Osborn HP, Leleu A, Pallé E, Bonfanti A, Barragán O, Wilson TG, Broeg C, Cameron AC, Lendl M, Maxted PFL, Alibert Y, Gandolfi D, Delisle JB, Hooton MJ, Egger JA, Nowak G, Lafarga M, Rapetti D, Twicken JD, Morales JC, Carleo I, Orell-Miquel J, Adibekyan V, Alonso R, Alqasim A, Amado PJ, Anderson DR, Anglada-Escudé G, Bandy T, Bárczy T, Barrado Navascues D, Barros SCC, Baumjohann W, Bayliss D, Bean JL, Beck M, Beck T, Benz W, Billot N, Bonfils X, Borsato L, Boyle AW, Brandeker A, Bryant EM, Cabrera J, Carrazco-Gaxiola S, Charbonneau D, Charnoz S, Ciardi DR, Cochran WD, Collins KA, Crossfield IJM, Csizmadia S, Cubillos PE, Dai F, Davies MB, Deeg HJ, Deleuil M, Deline A, Delrez L, Demangeon ODS, Demory BO, Ehrenreich D, Erikson A, Esparza-Borges E, Falk B, Fortier A, Fossati L, Fridlund M, Fukui A, Garcia-Mejia J, Gill S, Gillon M, Goffo E, Gómez Maqueo Chew Y, Güdel M, Guenther EW, Günther MN, Hatzes AP, Helling C, Hesse KM, Howell SB, Hoyer S, Ikuta K, Isaak KG, Jenkins JM, Kagetani T, Kiss LL, Kodama T, Korth J, Lam KWF, Laskar J, Latham DW, Lecavelier des Etangs A, Leon JPD, Livingston JH, Magrin D, Matson RA, Matthews EC, Mordasini C, Mori M, Moyano M, Munari M, Murgas F, Narita N, Nascimbeni V, Olofsson G, Osborne HLM, Ottensamer R, Pagano I, Parviainen H, Peter G, Piotto G, Pollacco D, Queloz D, Quinn SN, Quirrenbach A, Ragazzoni R, Rando N, Ratti F, Rauer H, Redfield S, Ribas I, Ricker GR, Rudat A, Sabin L, Salmon S, Santos NC, Scandariato G, Schanche N, Schlieder JE, Seager S, Ségransan D, Shporer A, Simon AE, Smith AMS, Sousa SG, Stalport M, Szabó GM, Thomas N, Tuson A, Udry S, Vanderburg AM, Van Eylen V, Van Grootel V, Venturini J, Walter I, Walton NA, Watanabe N, Winn JN, Zingales T. A resonant sextuplet of sub-Neptunes transiting the bright star HD 110067. Nature 2023; 623:932-937. [PMID: 38030780 DOI: 10.1038/s41586-023-06692-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 09/28/2023] [Indexed: 12/01/2023]
Abstract
Planets with radii between that of the Earth and Neptune (hereafter referred to as 'sub-Neptunes') are found in close-in orbits around more than half of all Sun-like stars1,2. However, their composition, formation and evolution remain poorly understood3. The study of multiplanetary systems offers an opportunity to investigate the outcomes of planet formation and evolution while controlling for initial conditions and environment. Those in resonance (with their orbital periods related by a ratio of small integers) are particularly valuable because they imply a system architecture practically unchanged since its birth. Here we present the observations of six transiting planets around the bright nearby star HD 110067. We find that the planets follow a chain of resonant orbits. A dynamical study of the innermost planet triplet allowed the prediction and later confirmation of the orbits of the rest of the planets in the system. The six planets are found to be sub-Neptunes with radii ranging from 1.94R⊕ to 2.85R⊕. Three of the planets have measured masses, yielding low bulk densities that suggest the presence of large hydrogen-dominated atmospheres.
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Affiliation(s)
- R Luque
- Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL, USA.
| | - H P Osborn
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - A Leleu
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - E Pallé
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Departamento de Astrofisica, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - A Bonfanti
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - O Barragán
- Sub-department of Astrophysics, Department of Physics, University of Oxford, Oxford, UK
| | - T G Wilson
- Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, St Andrews, UK
- Department of Physics, University of Warwick, Coventry, UK
- Centre for Exoplanets and Habitability, University of Warwick, Coventry, UK
| | - C Broeg
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
- Center for Space and Habitability, University of Bern, Bern, Switzerland
| | - A Collier Cameron
- Centre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, St Andrews, UK
| | - M Lendl
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - P F L Maxted
- Astrophysics Group, Lennard Jones Building, Keele University, Keele, UK
| | - Y Alibert
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
- Center for Space and Habitability, University of Bern, Bern, Switzerland
| | - D Gandolfi
- Dipartimento di Fisica, Universita degli Studi di Torino, Torino, Italy
| | - J-B Delisle
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - M J Hooton
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - J A Egger
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
| | - G Nowak
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Departamento de Astrofisica, Universidad de La Laguna, La Laguna, Tenerife, Spain
- Institute of Astronomy, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Toruń, Poland
| | - M Lafarga
- Department of Physics, University of Warwick, Coventry, UK
- Centre for Exoplanets and Habitability, University of Warwick, Coventry, UK
| | - D Rapetti
- NASA Ames Research Center, Moffett Field, CA, USA
- Research Institute for Advanced Computer Science, Universities Space Research Association, Washington, DC, USA
| | - J D Twicken
- NASA Ames Research Center, Moffett Field, CA, USA
- SETI Institute, Mountain View, CA, USA
| | - J C Morales
- Institut de Ciencies de l'Espai (ICE-CSIC), Bellaterra, Spain
- Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, Spain
| | - I Carleo
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- INAF - Osservatorio Astrofisico di Torino, Pino Torinese, Italy
| | - J Orell-Miquel
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Departamento de Astrofisica, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - V Adibekyan
- Instituto de Astrofísica e Ciências do Espaço, Universidade do Porto, Porto, Portugal
- Departamento de Física e Astronomia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - R Alonso
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Departamento de Astrofisica, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - A Alqasim
- Mullard Space Science Laboratory, University College London, Dorking, UK
| | - P J Amado
- Instituto de Astrofísica de Andalucía (IAA-CSIC), Granada, Spain
| | - D R Anderson
- Department of Physics, University of Warwick, Coventry, UK
- Centre for Exoplanets and Habitability, University of Warwick, Coventry, UK
| | - G Anglada-Escudé
- Institut de Ciencies de l'Espai (ICE-CSIC), Bellaterra, Spain
- Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, Spain
| | - T Bandy
- European Space Research and Technology Centre (ESTEC), European Space Agency (ESA), Noordwijk, The Netherlands
| | | | | | - S C C Barros
- Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, Porto, Portugal
- Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Porto, Portugal
| | - W Baumjohann
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - D Bayliss
- Department of Physics, University of Warwick, Coventry, UK
| | - J L Bean
- Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL, USA
| | - M Beck
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - T Beck
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
| | - W Benz
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
- Center for Space and Habitability, University of Bern, Bern, Switzerland
| | - N Billot
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - X Bonfils
- Université Grenoble Alpes, CNRS, IPAG, Grenoble, France
| | - L Borsato
- INAF - Osservatorio Astronomico di Padova, Padova, Italy
| | - A W Boyle
- Department of Astronomy, California Institute of Technology, Pasadena, CA, USA
| | - A Brandeker
- Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden
| | - E M Bryant
- Department of Physics, University of Warwick, Coventry, UK
- Mullard Space Science Laboratory, University College London, Dorking, UK
| | - J Cabrera
- Institute of Planetary Research, German Aerospace Center (DLR), Berlin, Germany
| | - S Carrazco-Gaxiola
- Instituto de Astronomía, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
- Department of Physics and Astronomy, Georgia State University, Atlanta, GA, USA
- RECONS Institute, Chambersburg, PA, USA
| | - D Charbonneau
- Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA, USA
| | - S Charnoz
- Université de Paris Cité, Institut de Physique du Globe de Paris, CNRS, Paris, France
| | - D R Ciardi
- Department of Astronomy, California Institute of Technology, Pasadena, CA, USA
| | - W D Cochran
- McDonald Observatory, The University of Texas, Austin, TX, USA
- Center for Planetary Systems Habitability, The University of Texas, Austin, TX, USA
| | - K A Collins
- Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA, USA
| | - I J M Crossfield
- Department of Physics and Astronomy, University of Kansas, Lawrence, KS, USA
| | - Sz Csizmadia
- Institute of Planetary Research, German Aerospace Center (DLR), Berlin, Germany
| | - P E Cubillos
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
- INAF - Osservatorio Astrofisico di Torino, Pino Torinese, Italy
| | - F Dai
- Department of Astronomy, California Institute of Technology, Pasadena, CA, USA
- Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA
| | - M B Davies
- Centre for Mathematical Sciences, Lund University, Lund, Sweden
| | - H J Deeg
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Departamento de Astrofisica, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - M Deleuil
- Aix Marseille Univ., CNRS, CNES, LAM, Marseille, France
| | - A Deline
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - L Delrez
- Astrobiology Research Unit, Université de Liège, Liège, Belgium
- Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège, Belgium
| | - O D S Demangeon
- Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, Porto, Portugal
- Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Porto, Portugal
| | - B-O Demory
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
- Center for Space and Habitability, University of Bern, Bern, Switzerland
| | - D Ehrenreich
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
- Centre Vie dans l'Univers, Faculté des sciences, Université de Genève, Genève 4, Switzerland
| | - A Erikson
- Institute of Planetary Research, German Aerospace Center (DLR), Berlin, Germany
| | - E Esparza-Borges
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Departamento de Astrofisica, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - B Falk
- Space Telescope Science Institute, Baltimore, MD, USA
| | - A Fortier
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
- Center for Space and Habitability, University of Bern, Bern, Switzerland
| | - L Fossati
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - M Fridlund
- Leiden Observatory, University of Leiden, Leiden, The Netherlands
- Onsala Space Observatory, Department of Space, Earth and Environment, Chalmers University of Technology, Onsala, Sweden
| | - A Fukui
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Komaba Institute for Science, The University of Tokyo, Tokyo, Japan
| | - J Garcia-Mejia
- Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA, USA
| | - S Gill
- Department of Physics, University of Warwick, Coventry, UK
| | - M Gillon
- Astrobiology Research Unit, Université de Liège, Liège, Belgium
| | - E Goffo
- Dipartimento di Fisica, Universita degli Studi di Torino, Torino, Italy
- Thüringer Landessternwarte Tautenburg, Tautenburg, Germany
| | - Y Gómez Maqueo Chew
- Instituto de Astronomía, Universidad Nacional Autónoma de México, Ciudad de México, Mexico
| | - M Güdel
- Department of Astrophysics, University of Vienna, Vienna, Austria
| | - E W Guenther
- Thüringer Landessternwarte Tautenburg, Tautenburg, Germany
| | - M N Günther
- European Space Research and Technology Centre (ESTEC), European Space Agency (ESA), Noordwijk, The Netherlands
| | - A P Hatzes
- Thüringer Landessternwarte Tautenburg, Tautenburg, Germany
| | - Ch Helling
- Space Research Institute, Austrian Academy of Sciences, Graz, Austria
| | - K M Hesse
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - S B Howell
- NASA Ames Research Center, Moffett Field, CA, USA
| | - S Hoyer
- Aix Marseille Univ., CNRS, CNES, LAM, Marseille, France
| | - K Ikuta
- Department of Multi-Disciplinary Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - K G Isaak
- European Space Research and Technology Centre (ESTEC), European Space Agency (ESA), Noordwijk, The Netherlands
| | - J M Jenkins
- NASA Ames Research Center, Moffett Field, CA, USA
| | - T Kagetani
- Department of Multi-Disciplinary Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - L L Kiss
- Konkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences, Budapest, Hungary
- Institute of Physics, ELTE Eötvös Loránd University, Budapest, Hungary
| | - T Kodama
- Komaba Institute for Science, The University of Tokyo, Tokyo, Japan
| | - J Korth
- Lund Observatory, Division of Astrophysics, Department of Physics, Lund University, Lund, Sweden
| | - K W F Lam
- Institute of Planetary Research, German Aerospace Center (DLR), Berlin, Germany
| | - J Laskar
- IMCCE, UMR8028 CNRS, Observatoire de Paris, PSL Univ., Sorbonne Univ., Paris, France
| | - D W Latham
- Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA, USA
| | - A Lecavelier des Etangs
- Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, Paris, France
| | - J P D Leon
- Department of Multi-Disciplinary Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - J H Livingston
- Astrobiology Center, Tokyo, Japan
- National Astronomical Observatory of Japan, Tokyo, Japan
- Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Tokyo, Japan
| | - D Magrin
- INAF - Osservatorio Astronomico di Padova, Padova, Italy
| | - R A Matson
- United States Naval Observatory, Washington, DC, USA
| | - E C Matthews
- Max Planck Institute for Astronomy, Heidelberg, Germany
| | - C Mordasini
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
- Center for Space and Habitability, University of Bern, Bern, Switzerland
| | - M Mori
- Department of Multi-Disciplinary Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - M Moyano
- Instituto de Astronomía, Universidad Católica del Norte, Antofagasta, Chile
| | - M Munari
- INAF - Osservatorio Astrofisico di Catania, Catania, Italy
| | - F Murgas
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Departamento de Astrofisica, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - N Narita
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Komaba Institute for Science, The University of Tokyo, Tokyo, Japan
- Astrobiology Center, Tokyo, Japan
| | - V Nascimbeni
- INAF - Osservatorio Astronomico di Padova, Padova, Italy
| | - G Olofsson
- Department of Astronomy, Stockholm University, AlbaNova University Center, Stockholm, Sweden
| | - H L M Osborne
- Mullard Space Science Laboratory, University College London, Dorking, UK
| | - R Ottensamer
- Department of Astrophysics, University of Vienna, Vienna, Austria
| | - I Pagano
- INAF - Osservatorio Astrofisico di Catania, Catania, Italy
| | - H Parviainen
- Instituto de Astrofisica de Canarias, La Laguna, Tenerife, Spain
- Departamento de Astrofisica, Universidad de La Laguna, La Laguna, Tenerife, Spain
| | - G Peter
- Institute of Optical Sensor Systems, German Aerospace Center (DLR), Berlin, Germany
| | - G Piotto
- INAF - Osservatorio Astronomico di Padova, Padova, Italy
- Dipartimento di Fisica e Astronomia "Galileo Galilei", Universita degli Studi di Padova, Padova, Italy
| | - D Pollacco
- Department of Physics, University of Warwick, Coventry, UK
| | - D Queloz
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
- Department of Physics, ETH Zurich, Zurich, Switzerland
| | - S N Quinn
- Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA, USA
| | - A Quirrenbach
- Landessternwarte, Zentrum für Astronomie der Universität Heidelberg, Heidelberg, Germany
| | - R Ragazzoni
- INAF - Osservatorio Astronomico di Padova, Padova, Italy
- Dipartimento di Fisica e Astronomia "Galileo Galilei", Universita degli Studi di Padova, Padova, Italy
| | - N Rando
- European Space Research and Technology Centre (ESTEC), European Space Agency (ESA), Noordwijk, The Netherlands
| | - F Ratti
- European Space Research and Technology Centre (ESTEC), European Space Agency (ESA), Noordwijk, The Netherlands
| | - H Rauer
- Institute of Planetary Research, German Aerospace Center (DLR), Berlin, Germany
- Zentrum für Astronomie und Astrophysik, Technische Universität Berlin, Berlin, Germany
- Institut für Geologische Wissenschaften, Freie Universität Berlin, Berlin, Germany
| | - S Redfield
- Astronomy Department, Wesleyan University, Middletown, CT, USA
- Van Vleck Observatory, Wesleyan University, Middletown, CT, USA
| | - I Ribas
- Institut de Ciencies de l'Espai (ICE-CSIC), Bellaterra, Spain
- Institut d'Estudis Espacials de Catalunya (IEEC), Barcelona, Spain
| | - G R Ricker
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - A Rudat
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - L Sabin
- Instituto de Astronomía, Universidad Nacional Autónoma de México, Ensenada, Mexico
| | - S Salmon
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - N C Santos
- Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, Porto, Portugal
- Departamento de Fisica e Astronomia, Faculdade de Ciencias, Universidade do Porto, Porto, Portugal
| | - G Scandariato
- INAF - Osservatorio Astrofisico di Catania, Catania, Italy
| | - N Schanche
- Center for Space and Habitability, University of Bern, Bern, Switzerland
- Department of Astronomy, University of Maryland, College Park, MD, USA
| | - J E Schlieder
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - S Seager
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA
- Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - D Ségransan
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - A Shporer
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - A E Simon
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
| | - A M S Smith
- Institute of Planetary Research, German Aerospace Center (DLR), Berlin, Germany
| | - S G Sousa
- Instituto de Astrofisica e Ciencias do Espaco, Universidade do Porto, Porto, Portugal
| | - M Stalport
- Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège, Belgium
| | - Gy M Szabó
- Gothard Astrophysical Observatory, ELTE Eötvös Loránd University, Szombathely, Hungary
- HUN-REN-ELTE Exoplanet Research Group, Szombathely, Hungary
| | - N Thomas
- Space Research and Planetary Sciences, Physics Institute, University of Bern, Bern, Switzerland
| | - A Tuson
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - S Udry
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - A M Vanderburg
- Department of Physics, Massachusetts Institute of Technology, Cambridge, MA, USA
- Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - V Van Eylen
- Mullard Space Science Laboratory, University College London, Dorking, UK
| | - V Van Grootel
- Space sciences, Technologies and Astrophysics Research (STAR) Institute, Université de Liège, Liège, Belgium
| | - J Venturini
- Observatoire Astronomique de l'Université de Genève, Versoix, Switzerland
| | - I Walter
- Institute of Optical Sensor Systems, German Aerospace Center (DLR), Berlin, Germany
| | - N A Walton
- Institute of Astronomy, University of Cambridge, Cambridge, UK
| | - N Watanabe
- Department of Multi-Disciplinary Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - J N Winn
- Department of Astrophysical Sciences, Princeton University, Princeton, NJ, USA
| | - T Zingales
- Dipartimento di Fisica e Astronomia "Galileo Galilei", Universita degli Studi di Padova, Padova, Italy
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Deng J, Liu K, Wang K, Yang B, Xu H, Wang J, Dai F, Xiao X, Gu X, Zhang L, Qu W. The prevalence of coagulase-negative staphylococcus associated with bovine mastitis in China and its antimicrobial resistance rate: a meta-analysis. J DAIRY RES 2023:1-6. [PMID: 37381099 DOI: 10.1017/s0022029923000365] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
Abstract
To contribute to the treatment decision and optimize coagulase-negative staphylococcus (CNS) control programs, we conducted a meta-analysis to investigate the epidemiology and antimicrobial resistance rates of coagulase-negative staphylococcus associated with bovine mastitis in China. Three databases (PubMed, Google scholar and China National Knowledge Infrastructure database) were utilized to obtain relevant publications. A total of 18 publications were included in our research, and 3 of them included antimicrobial resistant (AMR) test. The pooled prevalence of coagulase-negative staphylococcus was 17.28%. Subgroup analysis revealed that the prevalence was higher in South China than in North China, was higher in 2011-2020 than in 2000-2010 and was higher in clinical bovine mastitis cases than in subclinical cases. The pooled AMR were most resistant to β-lactams, followed by tetracyclines, quinolones, nitrofurans, lincosamides, sulfonamides, amphenicol and aminoglycosides. The pooled AMR rate of coagulase-negative staphylococcus was lower in 2011-2020 than in 2000-2010. Although the prevalence of CNS showed an increasing trend over 20 years, the AMR rate showed a decreasing trend, and the clinical type of mastitis was the most frequent and the prevalence was highest in South China. Finally, CNS was most resistant to β-lactams amongst the eight groups of antimicrobial agents.
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Affiliation(s)
- Jianming Deng
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Kai Liu
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Kuan Wang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Bowen Yang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Hui Xu
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Juyu Wang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Feiyan Dai
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Xiao Xiao
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Xiaolong Gu
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Limei Zhang
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
| | - Weijie Qu
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, PR China
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Dai F, Zhang QB, He YX, Tang YP, Lei TY, Jiang Y, Qing YF. OP0114 IDENTIFICATION AND FUNCTIONAL PREDICTION OF LONG NONCODING RNA RELATED TO CONNECTIVE TISSUE DISEASE-ASSOCIATED INTERSTITIAL LUNG DISEASES. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundRecently, the role of long noncoding RNA (lncRNA) in rheumatic immune diseases has attracted widespread attention1. However, knowledge of lncRNA in connective tissue disease-associated interstitial lung disease (CTD-ILD) is limited.ObjectivesTo explore the expression profile of lncRNA in peripheral blood mononuclear cells (PBMCs) of CTD-ILD patients and the possible mechanisms of significantly differentially expressed lncRNA involved in CTD-ILD, especially systemic sclerosis (SSc)-ILD and rheumatoid arthritis (RA)-ILD.MethodsLncRNA microarray analysis was used to identify the pattern of lncRNA dysregulation between CTD-ILD and connective tissue disease without associated interstitial lung disease (CTD-NILD). Differential genes were identified by bioinformatic analysis. Relative expression levels of five differentially expressed lncRNAs in 120 SSc and RA patients with or without ILD were detected by quantitative reverse-transcription PCR (qRT-PCR).ResultsThe differential gene expression analysis revealed 46 lncRNAs were upregulated while 194 lncRNAs were downregulated in the CTD-ILD group compared to the CTD-NILD group (Figure 1). Gene Ontology and Kyoto Encyclopedia of Genes and Genomes pathway analyses identified several significant biological processes and signaling pathways, including NF-kappa B signaling pathway, IL-17 signaling pathway, Toll-like receptor signaling pathway, B cell receptor signaling pathway. QRT-PCR confirmed that the selected target genes were differentially expressed in different groups. In particular, the ENST00000604692 expression level was significantly higher in the ILD than the NILD group (p<0.05, Figure 1); T311354 and arginase-1were significantly higher in SSc than RA group; Furthermore, the area under receiver operating characteristic curve for ENST00000604692 in predicting ILD from NILD was 0.797 (Figure 1).ConclusionThis research has demonstrated, for the first time, the specific profile of lncRNA in PBMCs of CTD-ILD patients and the potential signal pathways related to the pathogenesis of CTD-ILD. ENST00000604692 can effectively distinguish ILD group from NILD group,which may be a diagnostic indicator of CTD-ILD, especially SSc-ILD and RA-ILD.References[1]Guo CJ, Xu G, Chen LL. Mechanisms of Long Noncoding RNA Nuclear Retention. Trends Biochem Sci (2020) 45(11):947-60. doi: 10.1016/j.tibs.2020.07.001.Disclosure of InterestsNone declared
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Qing YF, Dai F, Zhang QB, Tang YP, Dong ZR, He YX, Jiang Y, Huang YQ, Zheng J. AB0011 EXPRESSION PROFILE AND POTENTIAL FUNCTION OF CIRCRNAS IN PERIPHERAL BLOOD MONONUCLEAR CELLS FROM PATIENTS WITH PRIMARY GOUT. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Autophagy is a phenomenon of “self-phagocytosis” in eukaryotic cells, which maintains cell homeostasis by transporting intracellular materials to lysosomes for degradation and recycling. In recent years, studies have shown that autophagy may be involved in the pathogenesis of rheumatoid arthritis(RA)[1], but its specific mechanism is still unclear.Objectives:The expression levels of autophagy-related genes(ATG) unc-51-like kinase 1(ULK1), ATG13, ATG17, microtubule associated protein 1 light chain 3 (LC3), and P62 in peripheral blood mononuclear cells (PBMC) of patients with RA were detected, and their role and clinical significance in the pathogenesis of RA were explored.Methods:Real-time fluorescent quantitative PCR was performed to detect the expression levels of ULK1, ATG13, ATG17, LC3, and P62 in PBMCs of 50 RA patients, 50 healthy controls (HC), and 25 moderate to severe RA patients before and after treatment. Then, t test, χ2 test, Mann-Whitney U test, Pearson test were used for statistical analysis.Results:1.The levels of hsCRP, white blood cell(WBC), neutrophils(GR), platelet(PLT) and plateletcrit(PCT) in RA group were higher than those in HC group (P <0.05). Lymphocytes (LY), red blood cell(RBC), hemoglobin(HGB), hematocrit(HCT), mean corpuscular hemoglobin(MCH), mean red blood cell volume(MCV) and mean red blood cell hemoglobin concentration(MCHC) in RA group were lower than those in HC group (P <0.05). 2.The expressions of ULK1, ATG17, and LC3 in RA group were higher than those in HC group, while the expressions of P62 was lower than those in HC group(P<0.05) (Figure 1). The correlation analysis suggested that ATG17 was positively correlated with tender joint count (TJC), swollen joint count (SJC), and health assessment questionnaire (HAQ) (P<0.05); ULK1 and HAQ were negatively correlated (P<0.05).3. Compared with before treatment with TNFi, ATG17, HAQ, DAS-28, ESR, hsCRP, WBC, GR, PLT and PCT were significantly reduced after treatment (P<0.05); the expressions of RBC, HCT, MCV and MCH were significantly increased after treatment,(P<0.05); ULK1, ATG13, LC3, P62 and other related clinical and laboratory indicators were not significantly different before and after treatment with TNFi (P>0.05).Figure 1.The expression levels of ATGs in HC and RA groups.Conclusion:There is abnormal expression of autophagy genes in the peripheral blood of RA patients. ULK1, ATG17, LC3 and P62 may be related to the pathogenesis of RA, among them, ATG17 may regulate the pathogenesis of RA by participating in the TNF-α pathway.References:[1]Rockel Jason S,Kapoor Mohit,Autophagy: controlling cell fate in rheumatic diseases.[J].Nat Rev Rheumatol, 2016, 12: 517-31.Disclosure of Interests:Yu-Feng Qing Grant/research support from: Science and Technology Project of Nanchong City (no.18SXHZ0522), Fei Dai: None declared, Quan-Bo Zhang Grant/research support from: the National Natural Science Foundation of China(General Program) (no.81974250), and Science and Technology Plan Project of Sichuan Province (no.2018JY0257), Yi-Ping Tang: None declared, Zeng-Rong Dong: None declared, Yi-Xi He: None declared, Yi Jiang: None declared, Yu-Qin Huang: None declared, Jianxiong Zheng: None declared
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Tang YP, Qing YF, Dong ZR, Dai F, Zheng J, Jiang Y, He YX, Zhang QB. AB0075 HSA_CIRC_0012732, HSA_CIRC_0008961, HSA_CIRC_0405239 AND HSA_CIRC_0068784 MIGHT BE INVOLVED IN THE PATHOGENESIS AND DEVELOPMENT OF ANKYLOSING SPONDYLITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Background:CircRNAs have been found to be involved in the occurrence and development of many rheumatic diseases[1-2]. Are circRNAs involved in the pathogenesis of ankylosing spondylitis (AS)? How do these circRNAs participate in the pathogenesis of AS? This all needs further study.Objectives:This study is to clarify the expression levels of hsa_circ_0012732, hsa_circ_0008961, hsa_circ_0405239 and hsa_circ_0068784 in the peripheral blood of AS patients, and to explore whether these circRNAs are involved in the pathogenesis of AS.Methods:To collected 60 cases of AS (30 cases of active AS (ASA): BASDA> 6 or 6> BASDAI> 4, ESR> 22mm / h or 6> BASDAI> 4, hsCRP> 9mg / L; 30 cases of stable AS (ASS): BASDAI <4) and 30 health control (HC) peripheral blood samples, related clinical and laboratory indicators. The relative expression levels of hsa_circ_0012732, hsa_circ_0008961, hsa_circ_0405239 and hsa_circ_0068784 in each group were detected by real-time quantitative polymerase chain reaction (qPCR). The relationships between the 4 circRNAs and clinical and laboratory indicators were explored by correlation analysis.Results:1. The qPCR results suggested that the expression of hsa_circ_0012732 between the ASA and ASS groups was statistically significant (p<0.05), and the expression of hsa_circ_0008961 was statistically significant between the ASA and HC groups (p<0.05). Howeverthere was no statistical significance among other groups (p>0.05)Figure 1. Similarly, the expression level of hsa_circ_0405239 was not statistically significant among the groups (p>0.05), and the same was true for hsa_circ_0068784 (p>0.05).2. Correlation analysis results (Figure 2) showed that hsa_circ_0012732 is positively correlated with lymphocyte count (LY), mean corpusular volume (MCV), albumin (ALB), and negatively correlated with Bath ankylosing spondylitis disease activity index (BASDAI), Bath ankylosing spondylitis functional index (BASFI), high sensitivity C-reactive protein (hsCRP), Globulin (GLOB) (p<0.05); hsa_circ_0008961 is negatively correlated with platelet (PLT) (p<0.05); hsa_circ_0405239 is negatively correlated with BASDAI and BASFI; hsa_circ_0068784 was negatively correlated with BASDAI (p<0.05); and there was no statistically significant (p>0.05) between these 4 circRNAs and other indicators.Conclusion:Hsa_circ_0012732, hsa_circ_0008961, hsa_circ_0405239 and hsa_circ_0068784 may be related to the pathogenesis of AS. Among them, hsa_circ_0012732 may be involved in AS inflammation and has the potential to participate in the judgment of disease activity.References:[1]LS, K., et al., The biogenesis, biology and characterization of circular RNAs. 2019. 20(11): p. 675-691.[2]J, W., et al., Non-coding RNAs in Rheumatoid Arthritis: From Bench to Bedside. 2019. 10: p. 3129.Disclosure of Interests:Yi-Ping Tang Grant/research support from: Science and Technology Project of Nanchong City (18SXHZ0522)., Yu-Feng Qing: None declared, Zeng-Rong Dong: None declared, Fei Dai: None declared, Jianxiong Zheng: None declared, Yi Jiang: None declared, Yi-Xi He: None declared, Quan-Bo Zhang Grant/research support from: National Natural Science Foundation of China(General Program) (81974250); Science and Technology Plan Project of Sichuan Province (2018JY0257)
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Zheng J, Dong ZR, Tang YP, Huang YQ, Zhang QB, Dai F, Qing YF. AB0449 CLINICAL CHARACTERISTICS AND RISK FACTORS OF SYSTEMIC SCLEROSIS WITH HEMATOLOGIC SYSTEM DAMAGES. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:SSc characterized by varying degrees of fibrosis of the skin and internal organs, clinicians pay more attention to skin and viscera conditions, tend to ignore hematologic system damage. Studies have shown that rheumatic disease such as SLE, RA, pSS often accompanied with hematologic system damages, and hematologic system damages is multiple organ involvement and risk factor of poor prognosis[1-2].Objectives:To investigate the the clinical features, laboratory characteristics and risk factors of Systemic Sclerosis (SSc) patient with hematologic system damages.Methods:The clinical data of 180 patients were collected from January 2010 to April 2020, at the Affiliated Hospital of North Sichuan Medical College. The demographic information, laboratory tests, and clinical symptoms were analyzed retrospectively.Results:Among 180 SSc patients, 70(38.9%) cases were complicated with hematologic system damages. 51(72.9%) cases had anemia, 24 cases (34.3%) had leukopenia, 24 cases (34.3%) had thrombocytopenia, and 22 cases had hematologic system damages associated with more than two cell line involvement. Clinical symptoms: arthritis was significantly higher in the hematologic system damages group than patient without (P<0.05), however, there was no significantly difference in gender, age, disease course, respiratory symptoms, gastrointestinal symptoms, Raynaud’s phenomenon, interstitial lung disease and pulmonary hypertension (all P>0.05). Laboratory tests: ESR and hsCRP were increased in the hematologic system damages group, while the albumin decreased (all P<0.05). The positive rates of resistance to anti-dsDNA antibody and anti-ribosomal P protein antibody was higher in the hematologic system damages group (all P<0.05). Prognosis: During follow-up, leukopenia was more likely to recover, while the thrombocytopenia was more difficult to recover. Logistics regression analysis showed that positive of anti-ribosomal P protein antibody maght be a risk factor for SSc complicated with hematologic system damages [OR = 3.930(P<0.05)] (Table 1).Conclusion:SSc complicated with hematologic system damages is common, and patients with hematologic system damages have more serious clinical symptoms, some of whom have difficulty in recovey. Anti-ribosomal P protein antibody may be a risk factor of SSc hematologic system damages.Table 1.Bivariate logistics regression analysis on risk factors associated with hematologic damages in SSc.FactorBSEWaldOR(95%CI)P valuearthritis0.6540.3473.5431.922(0.973-3.797)0.060ESR-0.0810.4870.0280.922(0.355-2.393)0.868hsCRP-0.0070.4920.0000.993(0.379-2.607)0.989anti-dsDNA0.8680.6731.6642.393(0.637-8.916)0.197anti-Rib-P1.3690.6364.6333.930(1.130-13.666)0.031References:[1]González-Naranjo L A, Betancur O M, Alarcón G S, et al. Features associated with hematologic abnormalities and their impact in patients with systemic lupus erythematosus: Data from a multiethnic Latin American cohort[J]. Seminars in Arthritis and Rheumatism, 2016,45(6):675-683.DOI:10.1016/j.semarthrit.2015.11.003.[2]Skare T, Damin R, Hofius R. Prevalence of the American College of Rheumatology hematological classification criteria and associations with serological and clinical variables in 460 systemic lupus erythematosus patients[J]. Revista Brasileira de Hematologia e Hemoterapia, 2015,37(2):115-119.DOI:10.1016/j.bjhh.2015.01.006Disclosure of Interests:None declared.
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Zhang QB, Huang YQ, Xiao FN, Jian GL, Tang YP, Dai F, Zheng JX, Qing YF. POS1146 NONCODING RNA CONTRIBUTE TO PATHOGENESIS IN PRIMARY GOUTY ARTHRITIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.4056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Gout is an arthritic disease caused by the deposition of monosodium urate crystal (MSU) in the joints, which can lead to acute inflammation and damage adjacent tissue [1].Over the past decade, noncoding RNAs (ncRNAs) have been shown to have crucial importance in health and disease[2,3]. However, studies evaluating the function of ncRNAs in gout are scarce, and current knowledge of the role of ncRNAs in gout is still limited.Objectives:To assess the contribution of noncoding RNAs to gout and the clinical importance of these genes in primary gouty arthritis (GA).Methods:The mRNA expression levels of noncoding RNAs (LINC00173, LINC00963, LINC01330 and miRNA-182-5p) were measured in peripheral blood mononuclear cells (PBMCs) from 60 gout patients(including 30 acute gout patients, 30 intercritical gout patients) and 40 healthy subjects. The relationship between noncoding RNA expression levels and laboratory features was analyzed in GA patients.Results:The expression levels of LINC00173, LINC00963 and miRNA-182-5p were much lower in the AG and IG group than in the HC groups (p<0.05), and no significant difference was detected between AG and IG groups(P>0.05). The expression levels of LINC01330 were much lower in the AG group than in the IG and HC groups (p<0.05), and no significant difference was detected between AG and IG groups(P>0.05). In GA patients, the levels of noncoding RNAs mRNA correlated with laboratory inflammatory and metabolic indexes.Conclusion:Altered noncoding RNAs expression suggests that noncoding RNAs is involved in the pathogenesis of GA and participates in regulating inflammation and metabolism.References:[1]Xu Yi-Ting,Leng Ying-Rong,Liu Ming-Ming et al. MicroRNA and long noncoding RNA involvement in gout and prospects for treatment.[J].Int Immunopharmacol, 2020, 87: 106842.doi:10.1016/j.intimp.2020.106842[2]Yu Yunfang,Zhang Wenda,Li Anlin et al. Association of Long Noncoding RNA Biomarkers With Clinical Immune Subtype and Prediction of Immunotherapy Response in Patients With Cancer.[J].JAMA Netw Open, 2020, 3: e202149.doi:10.1001/jamanetworkopen.2020.2149[3]Zou Yaoyao,Xu Siqi,Xiao Youjun et al. Long noncoding RNA LERFS negatively regulates rheumatoid synovial aggression and proliferation.[J].J Clin Invest, 2018, 128: 4510-4524.doi:10.1172/JCI97965Figure 1.Relative Expression of noncoding RNAs in the PBMCs of Patients.Disclosure of Interests:Quan-Bo Zhang Grant/research support from: the National Natural Science Foundation of China(General Program) (no.81974250) and Science and Technology Plan Project of Sichuan Province (no.2018JY0257), Yu-Qin Huang: None declared, Fan-Ni Xiao: None declared, gui-lin jian: None declared, Yi-Ping Tang: None declared, Fei Dai: None declared, Jian-Xiong Zheng: None declared, Yu-Feng Qing Grant/research support from: Science and Technology Project of Nanchong City (no.18SXHZ0522).
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Qing YF, Zheng J, Wang SB, Dai F, Jiang Y, He YX, Zhang QB. POS0430 EXPRESSION AND CLINICAL SIGNIFICANCE OF AUTOPHAGY-RELATED GENES IN PERIPHERAL BLOOD MONONUCLEAR CELLS OF SYSTEMIC SCLEROSIS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Growing evidences have demonstrated that autophagy is a powerful regulators in the pathogenesis of fibrosis and autoimmune diseases. Autophagy abnormalities in SSc involve abnormal autophagy-related protein and autophagy-related gene polymorphism[1-2], however there is a few reports on the expression and clinical significance of autophagy-related genes.Objectives:To investigate the expression and clinical significance of autophagy-related genes LC-3 mRNA, Becline-1 mRNA, Agt-3 mRNA, Agt-5 mRNA, Agt-12 mRNA and Agt-16L1 mRNA in peripheral blood mononuclear cells (PBMC) of systemic sclerosis (SSc).Methods:51 cases of SSc and 60 cases of normal control were received from the Affiliated Hospital of North Sichuan Medical College, and autophagy-related genes were detected by RT-PCR. SPSS19.0 statistical software was used to compare the expression of autophagy-related genes between groups and analyze the relationship between autophagy-related genes and clinical data, P<0.05 was considered statistically significantResults:LC-3, Becline-1, and Agt-3 were highly expressed in SSc compared with normal control [LC-3: 0.78(0.60) ×10-3 vs. 0.52(0.54) ×10-3; Beclin-1: 6.68(3.56)×10-3 vs. 5.22(3.54)×10-3; Agt-3: 17.58(12.33)×10-3 vs. 11.00(4.56)×10-3, P<0.05], however Agt-5, Agt-12 and Agt-16L1 of autophagy-related genes were not statistically significant [AGT-5: 6.67(3.58) ×10-3 vs. 6.67(2.64) ×10-3; AGT-12: 8.64(5.56)×10-3 vs. 8.57(4.66)×10-3; Agt-16L1: 2.69(2.19)×10-3 vs. 2.52(2.26)×10-3] (Figure 1). Beclin-1 and Agt-5 high expressed in SSc with the positive of anti-SSA/Ro antibody. LC-3 was positively correlated with Age(r=0.662) and ESR(r=0.355) (all P<0.05).Conclusion:Autophagy-related genes were increased in PBMC of SSc, and were correlated with Age, ESR and autoantibody, suggested that autophagy is a key feature in the pathogenesis of systemic sclerosis.Figure 1.The relative expression of autophagy-related genesReferences:[1]LIU C, ZHOU X, LU J, et al. Autophagy mediates 2-methoxyestradiol-inhibited scleroderma collagen synthesis and endothelial-to-mesenchymal transition induced by hypoxia[J]. Rheumatology, 2019;58(11):1966–1975.[2]Mayes M D, Bossini-Castillo L, Gorlova O, et al. Immunochip Analysis Identifies Multiple Susceptibility Loci for Systemic Sclerosis[J]. The American Journal of Human Genetics, 2014,94(1):47-61.DOI:10.1016/j.ajhg.2013.12.002.Disclosure of Interests:None declared
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Luan Y, Li C, Zuo W, Hu H, Gao R, Zhang B, Tong X, Lu C, Dai F. Gene mapping reveals the association between tyrosine protein kinase Abl1 and the silk yield of Bombyx mori. Anim Genet 2021; 52:342-350. [PMID: 33683721 DOI: 10.1111/age.13052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2021] [Indexed: 11/29/2022]
Abstract
The Z chromosome of the silkworm contains a major gene that influences silk yield. This major locus on chromosome Z accounts for 35.10% of the phenotypic variance. The location and identification of the gene have been a focus of silkworm genetics research. Unfortunately, identification of this gene has been difficult. We used extreme phenotype subpopulations and selected from a backcross population, BC1 M, which was obtained using the high-yield strain 872B and the low-yield strain IS-Dazao as parents, for mapping the gene on the chromosome Z. The candidate region was narrowed down to 134 kb at the tip of the chromosome. BmAbl1 in this region correlated with silk gland development by spatiotemporal expression analysis. This gene was differentially expressed in the posterior silk glands of the high- and low-yield strains. In BmAbl1, an insertion-deletion (indel) within the 10th exonic region and an SNP within the 6th intronic region were detected and shown to be associated with cocoon shell weight in 84 Bombyx mori strains with different yields. Nucleotide diversity analysis of BmAbl1 and its 50 kb flanking regions indicated that BmAbl1 has experienced strong artificial selection during silkworm domestication. This study is the first to identify the genes controlling silk yield in the major QTL of the Z chromosome using forward genetics.
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Affiliation(s)
- Y Luan
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - C Li
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - W Zuo
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - H Hu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - R Gao
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - B Zhang
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - X Tong
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - C Lu
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
| | - F Dai
- State Key Laboratory of Silkworm Genome Biology, Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biotechnology, Southwest University, Chongqing, 400715, China
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Tang Y, Zhang J, Dai F, Razali NS, Tagore S, Chern B, Tan KH. Poor sleep is associated with higher blood pressure and uterine artery pulsatility index in pregnancy: a prospective cohort study. BJOG 2020; 128:1192-1199. [PMID: 33145901 PMCID: PMC8246763 DOI: 10.1111/1471-0528.16591] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/26/2020] [Indexed: 01/12/2023]
Abstract
Objective To elucidate the association between sleep disturbances and blood pressure as well as uterine artery Doppler during pregnancy in women with no pre‐existing hypertension. Design Prospective cohort study. Setting Outpatient specialist clinics at KK Women’s and Children’s Hospital, Singapore. Population Women with viable singleton pregnancies confirmed by ultrasonography at less than 14 weeks of amenorrhoea at first visit. Methods In all, 926 subjects were recruited for this study in the outpatient specialist clinics at KK Women’s and Children’s Hospital, Singapore, between 1 September 2010 and 31 August 2014. They were followed up throughout pregnancy with sleep quality, blood pressure and uterine artery Doppler assessed at each visit. Main outcome measures Sleep quality, blood pressure and uterine artery Doppler. Results Sleep progressively worsened as pregnancy advanced. Shorter sleep duration and poorer sleep efficiency were associated with higher blood pressure, especially in the first trimester. Mixed model analysis demonstrated an overall positive association between sleep quality represented by Pittsburgh Sleep Quality Index (PSQI) score and diastolic blood pressure (DBP) (P < 0.001) and mean arterial pressure (MAP) (P = 0.005) during pregnancy after considering all trimesters. Sleep duration was found to be negatively associated with both systolic blood pressure (SBP) (P = 0.029) and DBP (P = 0.002), whereas sleep efficiency was negatively correlated with DBP (P = 0.002) only. Overall poor sleep during pregnancy was also found to be associated with a higher uterine artery pulsatility index. Conclusion Our prospective study demonstrated that poor sleep quality is significantly associated with higher blood pressure and uterine artery pulsatility index during pregnancy. Tweetable abstract Poor sleep quality is significantly associated with higher blood pressure and higher uterine artery pulsatility index during pregnancy. Poor sleep quality is significantly associated with higher blood pressure and higher uterine artery pulsatility index during pregnancy.
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Affiliation(s)
- Y Tang
- Department of Obstetrics and Gynaecology, KK Women's and Children's Hospital, Singapore City, Singapore
| | - J Zhang
- Department of Obstetrics and Gynaecology, KK Women's and Children's Hospital, Singapore City, Singapore.,Ministry of Education - Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - F Dai
- Department of Obstetrics and Gynaecology, KK Women's and Children's Hospital, Singapore City, Singapore
| | - N S Razali
- Department of Obstetrics and Gynaecology, KK Women's and Children's Hospital, Singapore City, Singapore
| | - S Tagore
- Department of Maternal Fetal Medicine, KK Women's and Children's Hospital, Singapore City, Singapore
| | - Bsm Chern
- Department of Minimally Invasive Surgery, KK Women's and Children's Hospital, Singapore City, Singapore
| | - K H Tan
- Department of Obstetrics and Gynaecology, KK Women's and Children's Hospital, Singapore City, Singapore
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Lin L, Dai F, Ren G, Wei J, Chen Z, Tang X. Corrigendum to "Efficacy of lianhuaqingwen granules in the management of chronic rhinosinusitis without nasal polyps" [Am. J. Otolaryngol. 2020 Jan - Feb;41(1):102311]. Am J Otolaryngol 2020; 41:102510. [PMID: 32386740 DOI: 10.1016/j.amjoto.2020.102510] [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: 02/07/2023]
Affiliation(s)
- L Lin
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital North of Fudan University, Shanghai, China.
| | - F Dai
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital North of Fudan University, Shanghai, China
| | - G Ren
- Department of Pathology, Huashan Hospital North of Fudan University, Shanghai, China
| | - J Wei
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital North of Fudan University, Shanghai, China
| | - Z Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital North of Fudan University, Shanghai, China
| | - X Tang
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital North of Fudan University, Shanghai, China
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Quan XJ, Wang LL, Dai F, Luo HS, Wang JH. [The role of nitric oxide in the inhibitory effects of exogenous hydrogen sulfide on rat colonic smooth muscle contraction]. Zhonghua Yi Xue Za Zhi 2020; 100:1095-1101. [PMID: 32294875 DOI: 10.3760/cma.j.cn112137-20191016-02237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the role of nitric oxide (NO) in hydrogen sulfide (H(2)S)-induced inhibition upon colonic smooth muscle contraction. Methods: Immunohistochemistry was applied to observe the distribution of H(2)S-producing enzymes CBS and CSE in adult male Wistar rats. Organ bath system was used to observe the spontaneous contraction of colonic smooth muscle. Patch clamp technique was applied to record currents of L-type calcium channel (I(Ca,L)) in smooth muscle cells. Results: Specific immunoreactivity for CSE and CBS was observed in mucosa, smooth muscle and enteric plexus of rat proximal colon. NaHS elicited relaxation in a concentration-dependent manner upon muscle contraction in the presence of tetrodotoxin. The NaHS IC(50) of LM was 917.6 μmol/L (95% CI: 776.3-1 085 μmol/L, n=6) and the NaHS IC(50) of CM was 730.4 μmol/L (95% CI: 592.2-900.8 μmol/L, n=6). The SNP-induced relaxation in muscle strips was partially reversed by NaHS (P<0.05). Instead, the relaxation caused by NaHS was decreased by the sGC inhibitor ODQ but affected neither by NO precursor L-arginine, the NO inhibitor L-NNA nor the competitive cGMP antagonist PET-cGMP. NaHS (100 μmol/L) increased I(Ca,L) while NaHS (300 μmol/L) decreased the peak I(Ca,L) with modifying the ion channel characteristics (P<0.05). Conclusions: Exogenous hydrogen sulfide might have a dual effect on colonic motility and its inhibitory effect might be independent of NO signaling system. L-type calcium channel may play an important role during the process of H(2)S modulating colonic contraction.
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Affiliation(s)
- X J Quan
- Department of Gastroenterology, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - L L Wang
- Department of Gastroenterology, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - F Dai
- Department of Gastroenterology, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - H S Luo
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - J H Wang
- Department of Gastroenterology, the Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
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Lin L, Dai F, Wei JJ, Chen Z, Tang XY. [rmIL-33-stimulated nuocytes promote allergic inflammation in mouse model of allergic rhinitis]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:870-874;882. [PMID: 31446708 DOI: 10.13201/j.issn.1001-1781.2019.09.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Indexed: 11/12/2022]
Abstract
Objective:The study aimed to investigate the role of nuocytes in allergic rhinitis (AR) murine models. Method:After intranasal administration of recombinant (rm) interleukin (IL)-33 in BALB/c mice, nuocytes were sorted and purified from the mouse nasal-associated lymphoid tissue (NALT). Then, we examined the response of nuocytes to rmIL-33 in vitro. After a murine model of AR was established using ovalbumin, we adoptively transferred the cultured NALT-derived nuocytes to mice models, and determined allergic responses in them. Result:rmIL-33 expanded nuocytes in NALT of mice compared with AR mice (t=3.66, P<0.01), and increased production of IL-13 from these cells in vitro in comparison with unstimulated nuocytes (t=19.90, P<0.000 1). After adoptive transfer of nuocytes, sneezing (t=9.89, P<0.000 1) ,numbers of eosinophils(t=8.17, P<0.000 1), concentrations of IL-13 (t=40.47, P<0.000 1) and IL-33 (t=19.89, P<0.000 1) in nasal lavage fluid were all enhanced when compared with AR mice. Conclusion:Nuocytes promote allergic inflammation in a murine model of AR.
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Affiliation(s)
- L Lin
- Department of Otorhinolaryngology Head and Neck Surgery,Huashan Hospital North of Fudan University,Shanghai,200040,China
| | - F Dai
- Department of Otorhinolaryngology Head and Neck Surgery,Huashan Hospital North of Fudan University,Shanghai,200040,China
| | - J J Wei
- Department of Otorhinolaryngology Head and Neck Surgery,Huashan Hospital North of Fudan University,Shanghai,200040,China
| | - Z Chen
- Department of Otorhinolaryngology Head and Neck Surgery,Huashan Hospital North of Fudan University,Shanghai,200040,China
| | - X Y Tang
- Department of Otorhinolaryngology Head and Neck Surgery,Huashan Hospital North of Fudan University,Shanghai,200040,China
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Zhang E, Dai F, Mao Y, He W, Liu F, Ma W, Qiao Y. Differences of the immune cell landscape between normal and tumor tissue in human prostate. Clin Transl Oncol 2019; 22:344-350. [PMID: 31077088 DOI: 10.1007/s12094-019-02128-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 03/05/2019] [Accepted: 04/26/2019] [Indexed: 01/11/2023]
Abstract
BACKGROUND Over the past few decades, immunological checkpoint therapy has been an increasingly prominent strategy in the treatment of tumors, including prostate cancer (PC). There are few systematic studies of the phenotypic of tumor-infiltrating immune cells in PC tissues. METHODS CIBERSORT is an analytical tool for estimating the abundance of member cell types in mixed cell population by gene expression data. Herein, we analyzed different levels of tumor-infiltrating immunity cells in normal tissue compared with PC using CIBERSORT. RESULTS The results showed that proportion of M1 macrophages and resting mast cells presented significant differences in prostate tumor than these normal tissues. A higher proportion of resting mast cells was associated with a worse outcome and M1 macrophages was associated with a favorable outcome. Moreover, the radiotherapy and targeted molecular therapy can affect the immune infiltration of M1 macrophages and resting mast cells. CONCLUSIONS Resting mast cells and M1 macrophages has an important role in the prognosis of prostate cancer. Our data provides valuable information about the future treatment of PC.
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Affiliation(s)
- E Zhang
- School of Life Sciences, Lanzhou University, No. 222 Tianshui South Road, Lanzhou, 730000, Gansu, People's Republic of China.
| | - F Dai
- School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Y Mao
- Lanzhou University Second Hospital, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - W He
- Lanzhou University Second Hospital, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - F Liu
- Lanzhou University Second Hospital, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - W Ma
- Lanzhou University First Hospital, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
| | - Y Qiao
- Lanzhou University First Hospital, Lanzhou University, Lanzhou, 730000, Gansu, People's Republic of China
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Lin L, Dai F, Wei JJ, Chen Z, Tang XY. [Differentiation of naive T cells into Th2 cells induced by nuocyte cells in mice with allergic rhinitis]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:1575-1579. [PMID: 30400710 DOI: 10.13201/j.issn.1001-1781.2018.20.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Indexed: 02/07/2023]
Abstract
Objective:The aim of this study is to examine whether nuocytes induced differentiation of primary T cells into Th2 cells in AR mice in vitro. Method:A murine model of AR on the background of BALB/c was established using ovalbumin, and nuocytes were sorted and purified from the mouse nasal associated lymphoid tissue (NALT) and cultured in vitro. Then, we assessed the expression of IL-4 in these cells. Mouse peripheral blood mononuclear cells were isolated and Th2 cells and T cells were isolated for in vitro culture, and the percentage of T cells in Th2 cells was detected. Then, NALT-derived nuocyte cells cultured in vitro were added to the above-mentioned mouse T cell culture medium for co-culture. Result:Numbers of sneezing, nasal rubbing and eosinophils in nasal lavage fluid were all enhanced in AR mice compared to normal ones. We used flow cytometry analysis to identify nuocytes from mice NALT as CD3CD4CD8CD19CD11bCD11cFcεR1 (lineage)-ICOS+, and also found that the cells expressed IL-4, and its protein and mRNA were all increased in AR mice versus normal mice. After nuocytes were co-cultured with T-cell cultures, we determined the percentage of Th2 cells in total T cells, and found that the percentage was increased significantly. Conclusion:nuocyte cells may induce the differentiation of primary T cells into Th2 cells in AR mice through IL-4 pathway.
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Affiliation(s)
- L Lin
- Department of Otorhinolaryngology Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai,200040, China
| | - F Dai
- Department of Otorhinolaryngology Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai,200040, China
| | - J J Wei
- Department of Otorhinolaryngology Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai,200040, China
| | - Z Chen
- Department of Otorhinolaryngology Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai,200040, China
| | - X Y Tang
- Department of Otorhinolaryngology Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai,200040, China
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Chang H, Han J, Yang Y, Duan G, Zou F, Xiang X, Dai F. First Report of Chlamydia Psittaci Seroprevalence in Black-headed Gulls ( Larus Ridibundus) at Dianchi Lake, China. Open Life Sci 2018; 13:250-252. [PMID: 33817090 PMCID: PMC7874713 DOI: 10.1515/biol-2018-0030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 04/09/2018] [Indexed: 11/15/2022] Open
Abstract
Chlamydiosis is an important zoonosis which can transmit from birds to humans, and investigation first reported the seroprevalence of Chlamydia psittaci in black-headed gulls (Larus ridibundus) at the Dianchi Lake, China. A total of 1029 serum samples collected from black-headed gulls between 2012-2015 were analyzed. The gulls were randomly caught and blood collected at Dianchi Lake, China. All the samples were analyzed for the presence of antibodies to C. psittaci by indirect hemagglutination assay (IHA). In this survey, the total infection rate was 11.86% (122/1029). The results of the present survey documented the existence of relatively high C. psittaci seroprevalence in black-headed gulls, which have a potential risk to the wild bird health and human health. Comprehensive practical control approaches and measures should be executed.
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Affiliation(s)
- Hua Chang
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Jiangqiang Han
- Yuxi College of Agricultural Vocational Technology, Yuxi, Yunnan Province 653106, China
| | - Yan Yang
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Gang Duan
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Fengcai Zou
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Xun Xiang
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
| | - Feiyan Dai
- Key Laboratory of Veterinary Public Health of Yunnan Province, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan Province 650201, China
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Shi M, Yu X, Wang L, Dai F, He G, Li Q. Reaction Equilibrium and Kinetics of Synthesis of Polyoxymethylene Dimethyl Ethers from Formaldehyde and Methanol. Kinet Catal 2018. [DOI: 10.1134/s0023158418030199] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lin L, Dai F, Wei JJ, Tang XY, Chen Z, Sun GB. Allergic inflammation is exacerbated by allergen-induced type 2 innate lymphoid cells in a murine model of allergic rhinitis. Rhinology 2018; 55:339-347. [PMID: 28689218 DOI: 10.4193/rhin17.065] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Group 2 innate lymphoid cells (ILC2s) represent a new innate effector leukocyte population that mediates type-2 immune response. However, the contribution of ILC2s to allergic rhinitis (AR) is currently not well defined. OBJECTIVE To evaluate the potential existence and function of allergen-induced ILC2s in the experimental AR. METHODS We established a murine model of AR using ovalbumin (OVA) and aluminium hydroxide. The OVA-induced ILC2s were sorted and purified from the mouse nasal-associated lymphoid tissue (NALT). Then, we assessed ILC2s responses to mouse recombinant interleukin (rmIL)-25, anti-IL17RB antibody and CC chemokine ligand (CCL) 25 in the culture. After that, we adoptively transferred the NALT-derived ILC2s alone or plus rmIL-25 or anti-IL17RB antibody to the murine model of AR to investigate their role in the nasal allergic inflammation. RESULTS We showed that ILC2s could be induced by OVA in the NALT of AR model. They were induced to secrete IL-5 and IL-13 by rmIL-25, and blocking of IL17RB contributed to the decreased production of these cytokines in the culture. We found that CCL25 induced the NALT-derived ILC2s migration through CC chemokine receptor 9 on ILC2s in vitro. Numbers of sneezing and nasal rubbing as well as counts of invasive eosinophils were all enhanced after the adoptive transfer of cultured ILC2s in vitro. The expressions of IL-5, IL-13, IL-25 and CCL25 in the NLF of allergic mice were also increased. CONCLUSION These findings show that ILC2s play a proinflammatory role in the murine AR model, and also highlight ILC2s as a new target in the future AR therapy.
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Affiliation(s)
- L Lin
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - F Dai
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - J J Wei
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - X Y Tang
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - Z Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - G B Sun
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
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Dai F, Xiang X, Duan G, Duan B, Xiao X, Chang H. Pathogenicity characteristics of Enterococcus faecium from diseased black bears. Iran J Vet Res 2018; 19:82-86. [PMID: 30046317 PMCID: PMC6056144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 10/25/2017] [Accepted: 12/23/2017] [Indexed: 06/08/2023]
Abstract
The death of several black bears at the black bear breeding base in Yunnan Pingbian Daweishan is a matter of concern. Multiple black bears exhibited decreased appetite or unusual waste, and some were soporific or suffered from vomiting and anhelation. In order to ascertain the cause of death, 16S rDNA gene sequencing and phylogenetic analysis was performed on bacteria isolated from tissue samples obtained from dead bears. The biochemical characteristics of the isolated bacteria were subsequently analyzed using different biochemical test systems. The bacteria can decompose glucose, but it cannot produce gas. The fermentation study of sucrose, lactose, trehalose, glycerol and mannitol yielded positive results; while it was unable to decompose urea or ODC (ornithine decarboxylase). Basic Local Alignment Search Tool (BLAST) analysis of a ~1500-bp DNA product amplified from the 16S rDNA of the bacterial isolate revealed that Enterococcus faecium from black bears is highly similar to other E. faecium isolates in the National Center for Biotechnology Information (NCBI) database, and the highest sequence similarity (99%) was with the reference strain. In addition, mice infected with the E. faecium isolate succumbed to severe damage to the lungs, liver, spleen, myocardium, and kidney tissues. In summary, the isolated E. faecium from dead black bears induced pathological changes in mice.
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Affiliation(s)
- F. Dai
- Department of Clinical Veterinary, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, China
- These authors contributed equally to this work and should all be considered as first authors
| | - X. Xiang
- Department of Clinical Veterinary, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, China
- These authors contributed equally to this work and should all be considered as first authors
| | - G. Duan
- Department of Clinical Veterinary, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, China
- These authors contributed equally to this work and should all be considered as first authors
| | - B. Duan
- Animal Disease Prevention and Control Center of Yunnan Province, Kunming, Yunnan, 650201, China
| | - X. Xiao
- Department of Clinical Veterinary, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, China
| | - H. Chang
- Department of Clinical Veterinary, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, Yunnan, 650201, China
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Chang H, Dai F, Duan B, Duan G, Zu F, Yang Z, Li H, Zhu Q, Zhang S, Xiang X. Isolation and characterization of Vagococcus carniphilus from diseased crucian carp. BIOTECHNOL BIOTEC EQ 2017. [DOI: 10.1080/13102818.2017.1413420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Hua Chang
- Department of Veterinary Public Health, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P. R. China
| | - Feiyan Dai
- Department of Veterinary Public Health, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P. R. China
| | - Bofang Duan
- Animal Disease Prevention and Control Center of Yunnan Province, Kunming, P. R. China
| | - Gang Duan
- Department of Veterinary Public Health, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P. R. China
| | - Fei Zu
- Department of Veterinary Public Health, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P. R. China
| | - Zhiyuan Yang
- Department of Veterinary Public Health, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P. R. China
| | - Haoxing Li
- Department of Veterinary Public Health, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P. R. China
| | - Qi Zhu
- Department of Veterinary Public Health, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P. R. China
| | - Siqi Zhang
- Department of Veterinary Public Health, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P. R. China
| | - Xun Xiang
- Department of Veterinary Public Health, College of Veterinary Medicine, Yunnan Agricultural University, Kunming, P. R. China
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Lin L, Dai F, Wei JJ, Tang XY, Chen Z, Sun GB. Allergic inflammation is exacerbated by allergen-induced type 2 innate lymphoid cells in a murine model of allergic rhinitis. Rhinology 2017. [PMID: 28689218 DOI: 10.4193/rhino17.065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Group 2 innate lymphoid cells (ILC2s) represent a new innate effector leukocyte population that mediates type-2 immune response. However, the contribution of ILC2s to allergic rhinitis (AR) is currently not well defined. OBJECTIVE To evaluate the potential existence and function of allergen-induced ILC2s in the experimental AR. METHODS We established a murine model of AR using ovalbumin (OVA) and aluminium hydroxide. The OVA-induced ILC2s were sorted and purified from the mouse nasal-associated lymphoid tissue (NALT). Then, we assessed ILC2s responses to mouse recombinant interleukin (rmIL)-25, anti-IL17RB antibody and CC chemokine ligand (CCL) 25 in the culture. After that, we adoptively transferred the NALT-derived ILC2s alone or plus rmIL-25 or anti-IL17RB antibody to the murine model of AR to investigate their role in the nasal allergic inflammation. RESULTS We showed that ILC2s could be induced by OVA in the NALT of AR model. They were induced to secrete IL-5 and IL-13 by rmIL-25, and blocking of IL17RB contributed to the decreased production of these cytokines in the culture. We found that CCL25 induced the NALT-derived ILC2s migration through CC chemokine receptor 9 on ILC2s in vitro. Numbers of sneezing and nasal rubbing as well as counts of invasive eosinophils were all enhanced after the adoptive transfer of cultured ILC2s in vitro. The expressions of IL-5, IL-13, IL-25 and CCL25 in the NLF of allergic mice were also increased. CONCLUSION These findings show that ILC2s play a proinflammatory role in the murine AR model, and also highlight ILC2s as a new target in the future AR therapy.
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Affiliation(s)
- L Lin
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - F Dai
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - J J Wei
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - X Y Tang
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - Z Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
| | - G B Sun
- Department of Otorhinolaryngology-Head and Neck Surgery, Huashan Hospital of Fudan University, Shanghai, China
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Affiliation(s)
- F. Dai
- Henan Province People’s Hospital, Zhengzhou, China
| | - L. Wang
- Henan Province People’s Hospital, Zhengzhou, China
| | - R. Chen
- Henan Province People’s Hospital, Zhengzhou, China
| | - L. Wang
- Henan Province People’s Hospital, Zhengzhou, China
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Chen S, Peng D, Xu X, Gao J, Dai F, Zuo C, Zhang Q. Assessment of erectile dysfunction and associated psychological distress in Chinese men with type 2 diabetes mellitus. Int J Impot Res 2017; 29:210-214. [DOI: 10.1038/ijir.2017.25] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 04/02/2017] [Accepted: 05/02/2017] [Indexed: 12/15/2022]
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Yu XH, Zhang Q, Yang XP, Yang W, Dai F, Qian Z, Wang ZL, Wu CF, Zhao HZ, Wang GH. Expression of macrophage migration-inhibitory factor in duodenal ulcer and its relation to Helicobacter pylori infection. Genet Mol Res 2015; 14:13860-7. [PMID: 26535701 DOI: 10.4238/2015.october.29.6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to examine the expression of macrophage migration-inhibitory factor (MIF) in duodenal ulcer epithelial cells and its relation to Helicobacter pylori (Hp) infection, and to discuss the pathogenic roles of MIF expression and Hp infection in duodenal ulcer. MIF protein and mRNA expression was examined in samples from patients with duodenal ulcer with and without Hp infection (N = 40 each, experimental group), and in normal duodenal bulb mucosal tissue (N = 40, control group) using immunohistochemistry and in situ hybridization. Patients without Hp infection received routine treatment, and treatment was provided to the patients positive for Hp to eradicate Hp infection. Hp and MIF expression levels before treatment and after the ulcer had been cured were compared. The positive rates of MIF protein and mRNA in patients with Hp infection before treatment were 67.5 and 65%, respectively, and were 18.9 and 21.6% in the 37 patients from whom Hp was eliminated. These were statistically different both before and after treatment compared with controls (P < 0.05). In the patients without Hp infection, the positive rates of MIF protein and mRNA expression before (45 and 47.5%, respectively) and after (32.5 and 30%) treatment were not significantly different (P > 0.05). The results of this study suggested that MIF is related to the development of duodenal ulcer, and that the presence of Hp is closely related with the expression of MIF in the duodenal mucosa and the development of duodenal ulcer.
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Affiliation(s)
- X H Yu
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - Q Zhang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - X P Yang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - W Yang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - F Dai
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - Z Qian
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - Z L Wang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - C F Wu
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - H Z Zhao
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
| | - G H Wang
- Department of Gastroenterology, General Hospital of Lanzhou Military Command, Lanzhou, Gansu Province, China
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Li C, Zuo W, Tong X, Hu H, Qiao L, Song J, Xiong G, Gao R, Dai F, Lu C. A composite method for mapping quantitative trait loci without interference of female achiasmatic and gender effects in silkworm,Bombyx mori. Anim Genet 2015; 46:426-32. [DOI: 10.1111/age.12311] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2015] [Indexed: 11/27/2022]
Affiliation(s)
- C. Li
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - W. Zuo
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - X. Tong
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - H. Hu
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - L. Qiao
- Institute of Entomology and Molecular Biology; College of Life Sciences; Chongqing Normal University; Chongqing 401331 China
| | - J. Song
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - G. Xiong
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - R. Gao
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - F. Dai
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
| | - C. Lu
- State Key Laboratory of Silkworm Genome Biology; Southwest University; Chongqi-ng 400716 China
- Key Laboratory for Sericulture Functional Genomics and Biotechnology of Agricultural Ministry; Southwest University; Chongqing 400716 China
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Dai F, Zhang F, Sun D, Zhang ZH, Dong SW, Xu JZ. CTLA4 enhances the osteogenic differentiation of allogeneic human mesenchymal stem cells in a model of immune activation. ACTA ACUST UNITED AC 2015; 48:629-36. [PMID: 26017342 PMCID: PMC4512102 DOI: 10.1590/1414-431x20154209] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 02/03/2015] [Indexed: 01/01/2023]
Abstract
Allogeneic mesenchymal stem cells (allo-MSCs) have recently garnered increasing interest for their broad clinical therapy applications. Despite this, many studies have shown that allo-MSCs are associated with a high rate of graft rejection unless immunosuppressive therapy is administered to control allo-immune responses. Cytotoxic T-lymphocyte-associated protein 4 (CTLA4) is a co-inhibitory molecule expressed on T cells that mediates the inhibition of T-cell function. Here, we investigated the osteogenic differentiation potency of allo-MSCs in an activated immune system that mimics the in vivo allo-MSC grafting microenvironment and explored the immunomodulatory role of the helper T cell receptor CTLA4 in this process. We found that MSC osteogenic differentiation was inhibited in the presence of the activated immune response and that overexpression of CTLA4 in allo-MSCs suppressed the immune response and promoted osteogenic differentiation. Our results support the application of CTLA4-overexpressing allo-MSCs in bone tissue engineering.
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Affiliation(s)
- F Dai
- Department of Orthopedics, National and Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing, China
| | - F Zhang
- Department of Orthopedics, National and Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing, China
| | - D Sun
- Department of Orthopedics, National and Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing, China
| | - Z H Zhang
- Department of Orthopedics, National and Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing, China
| | - S W Dong
- School of Biomedical Engineering, Department of Biomedical Materials Science, Third Military Medical University, Chongqing, China
| | - J Z Xu
- Department of Orthopedics, National and Regional United Engineering Laboratory of Tissue Engineering, Third Military Medical University, Chongqing, China
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Fedele V, Dai F, Marinescu V, Kim H, Weyerbrock A, Prinz M, Bredel M, Carro M. P01.05 * ZBTB18 METHYLATION PROMOTES MESENCHYMAL TRANSFORMATION IN GLIOBLASTOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.98] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ferrarese R, Bug E, Maticzka D, Reichardt W, Masilamani AP, Dai F, Weyerbrock A, Prinz M, Bredel M, Carro MS. P01.08 * LINEAGE-SPECIFIC SPLICING OF AN ALTERNATIVE EXON OF ANXA7 PROMOTES EGFR SIGNALING ACTIVATION AND TUMOR PROGRESSION IN GLIOBLASTOMA. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou174.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zhang Z, Wang X, Luo F, Yang H, Hou T, Zhou Q, Dai F, He Q, Xu J. Effects of rifampicin on osteogenic differentiation and proliferation of human mesenchymal stem cells in the bone marrow. Genet Mol Res 2014; 13:6398-410. [PMID: 25158258 DOI: 10.4238/2014.august.25.3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
This study was designed to investigate the effect of different concentrations of rifampicin on osteogenic differentiation and proliferation of mesenchymal stem cells (MSCs) in human bone marrow. Rifampicin treatment at 0, 4, 8, 16, 32, 64, and 128 mg/mL was applied throughout the whole process, from stromal cells purified from human bone marrow to differentiated bone cells. The effect of rifampicin on MSC proliferation was determined using the MTT assay. The effect of rifampicin on the expressions of type I collagen (COL1A1), osteopontin/bone Gla protein (OPN/BGP), and alkaline phosphatase (ALP) in human osteoblast cells were determined by real-time polymerase chain reaction, and the expressions of COL1A1, OPN/BGP, and the runt-related transcription factor (RUNX2) were determined by Western blot. Results showed that the proliferation of MSCs was significantly inhibited when the rifampicin concentration exceeded 32 mg/mL. In addition, increased rifampicin concentrations inhibited the formation of calcium nodules, OPN/BGP, and COL1A1 in osteoblasts after 28 days of induction. The RNA expressions of OPN/BGP, COL1A1, and ALP were significantly downregulated compared to those of the control group in osteoblasts after induction. The protein expressions of RUNX2, COL1A1, and OPN/BGP were also significantly downregulated compared to those of the control group after induction. In conclusion, rifampicin at exorbitant concentration exerts adverse effects on the proliferation of MSCs in human bone marrow and the differentiation of osteoblasts.
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Affiliation(s)
- Z Zhang
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - X Wang
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - F Luo
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - H Yang
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - T Hou
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - Q Zhou
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - F Dai
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - Q He
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
| | - J Xu
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, ChongQing, China
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Bredel M, Ferrarese R, Harsh GR, Yadav AK, Bug E, Maticzka D, Reichardt W, Masilamani AP, Dai F, Kim H, Hadler M, Scholtens DM, Yu ILY, Beck J, Srinivasasainagendra V, Costa F, Baxan N, Pfeifer D, Elverfeldt DV, Backofen R, Weyerbrock A, Duarte CW, He X, Prinz M, Chandler JP, Vogel H, Chakravarti A, Rich JN, Carro MS. ABERRANT SPLICING OF A BRAIN-ENRICHED ALTERNATIVE EXON ELIMINATES TUMOR SUPPRESSOR FUNCTION AND PROMOTES ONCOGENE FUNCTION DURING BRAIN TUMORIGENESIS. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou206.71] [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: 11/12/2022] Open
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Chang H, Dai F, Liu Z, Yuan F, Zhao S, Xiang X, Zou F, Zeng B, Fan Y, Duan G. Seroprevalence survey of avian influenza A (H5) in wild migratory birds in Yunnan Province, Southwestern China. Virol J 2014; 11:18. [PMID: 24490851 PMCID: PMC3912512 DOI: 10.1186/1743-422x-11-18] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Accepted: 01/31/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Highly pathogenic avian influenza virus (HPAIV) is a highly contagious disease which is a zoonotic pathogen of significant economic and public health concern. The outbreaks caused by HPAIV H5N1 of Asian origin have caused animal and human disease and mortality in several countries of Southeast Asia, such as Bangladesh, Cambodia, China, India, Indonesia, Laos, Myanmar, Thailand and Viet Nam. For the first time since 1961, this HPAIV has also caused extensive mortality in wild birds and has sparked debate of the role wild birds have played in the spread of this virus. Other than confirmed mortality events, little is known of this virus in wild birds. There is no report on the seroprevalence of avian influenza H5 infection in wild migratory birds in Yunnan Province. In this study we examined live wild birds in Yunnan Province for H5 specific antibody to better understand the occurrence of this disease in free living birds. METHODS Sera from 440 wild birds were collected from in Kunming and Northern Ailaoshan of Yunnan Province, Southwestern China, and assayed for H5 antibodies using the hemagglutination inhibition (HI) assays. RESULTS The investigation revealed that the seroprevalence of avian influenza H5 was as following: Ciconiiformes 2.6%, Strigiformes 13.04%, Passeriformes 20%, Cuculiformes 21.74%, Gruiformes 0%, Columbiformes 0%, Charadriiformes 0% and Coraciiformes 0%. Statistical analyses showed that there was a significant difference of prevalence between the orders (P < 0.01). Specific avian influenza H5 antibodies were detected in 23 of 440 (5.23%) sera. Mean HI titer 23 positive sera against H5 were 5.4 log₂. CONCLUSIONS The results of the present survey indicated that the proportion of wild birds had previously infected AIV H5 at other times of the year. To our knowledge, this is the first seroprevalence report of avian influenza H5 infection in wild migratory birds in China' s southwestern Yunnan Province. The results of the present survey have significant public health concerns.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Gang Duan
- College of Animal Science and Technology of Yunnan Agricultural University, Kunming, Yunnan 650201, China.
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Kurup V, Considine A, Hersey D, Dai F, Senior A, Silverman DG, Dabu-Bondoc S. Role of the Internet as an information resource for surgical patients: a survey of 877 patients. Br J Anaesth 2012; 110:54-8. [PMID: 22991261 DOI: 10.1093/bja/aes326] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND This study was conducted to provide preliminary data regarding current Internet use practices for information about anaesthesia in patients undergoing elective surgical procedures at a major academic institution. METHODS With IRB approval, 2936 patients coming for preanaesthetic evaluation at a tertiary academic hospital's preadmission testing (PAT) centre were invited to voluntarily participate in a 20-item questionnaire designed to obtain participants' characteristics and Internet use for information pertaining to their upcoming surgery. Data were analysed using statistical software SAS (Cary, NC, USA). Descriptive statistics were calculated for continuous variables using mean (sd), and for categorical data using n (%). Association analysis was performed using the Fisher's exact test. RESULTS Eight hundred and seventy-seven patients (30%) responded. Of these, 356 (41%) looked for information about their medical condition, 321 (37%) for their surgery, 279 (32%) for surgeon, 163 (19%) for the hospital, and only 36 (4%) for information regarding anaesthesia. Of these 36 patients, 14 (39%) said the sites they used helped answer their questions regarding anaesthesia. Of the 831 patients who did not use the Internet for anaesthesia, 503 (57%) indicated that they would be receptive to being directed to specific websites for anaesthesia. CONCLUSIONS Of the patients coming for elective surgery who responded (30%), the majority did not use the Internet to seek information regarding anaesthesia. Respondents indicated a high degree of interest in being directed to appropriate websites for further information. These results suggest that it may be beneficial to include information regarding reliable web-based resources to interested patients at preoperative visits.
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Affiliation(s)
- V Kurup
- Department of Anaesthesiology, Yale University School of Medicine, 333 Cedar Street, TMP-3, New Haven, CT 06510, USA.
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Sakai T, Matsusaki T, Dai F, Tanaka KA, Donaldson JB, Hilmi IA, Wallis Marsh J, Planinsic RM, Humar A. Pulmonary thromboembolism during adult liver transplantation: incidence, clinical presentation, outcome, risk factors, and diagnostic predictors. Br J Anaesth 2011; 108:469-77. [PMID: 22174347 DOI: 10.1093/bja/aer392] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Intraoperative pulmonary thromboembolism (PTE) is an often overlooked cause of mortality during adult liver transplantation (LT) with diagnostic challenge. The goals of this study were to investigate the incidence, clinical presentation, and outcome of PTE and to identify risk factors or diagnostic predictors for PTE. METHODS Four hundred and ninety-five consecutive, isolated, deceased donor LTs performed in an institution for a 3 yr period (2004-6) were analysed. The standard technique was a piggyback method with veno-venous bypass without prophylactic anti-fibrinolytics. The clinical diagnosis of PTE was made with (i) acute cor pulmonale, and (ii) identification of blood clots in the pulmonary artery or observation of acute right heart pressure overload with or without intracardiac clots with transoesophageal echocardiography. RESULTS The incidence of PTE was 4.0% (20 cases); cardiac arrest preceded the diagnosis of PTE [75% (15)] and PTE occurred during the neo-hepatic phase [85% (17)], especially within 30 min after graft reperfusion [70% (14)]. Operative and 60 day mortalities of patients with PTE were higher (P<0.001) than those without PTE (30% vs 0.8% and 45% vs 6.5%). Comparison of perioperative data between the PTE group (n=20) and the non-PTE group (n=475) revealed cardiac arrest and flat-line thromboelastography in three channels (natural, amicar, and protamine) at 5 min after graft reperfusion as the most significant risk factors or diagnostic predictors for PTE with an odds ratio of 154.32 [95% confidence interval (CI): 44.82-531.4] and 49.44 (CI: 15.6-156.57), respectively. CONCLUSIONS These findings confirmed clinical significance of PTE during adult LT and suggested the possibility of predicting this devastating complication.
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Affiliation(s)
- T Sakai
- Department of Anesthesiology, University of Pittsburgh Medical Center/University of Pittsburgh School of Medicine, 200 Lothrop Street, Pittsburgh, PA 15213, USA.
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Fan Y, Yu L, Zhang Q, Jiang Y, Dai F, Chen C, Tu Q, Bi A, Xu Y, Zhao S. Cloning and characterization of a novel member of human beta-1,4-galactosyltransferase gene family. ACTA ACUST UNITED AC 2011; 42:337-45. [PMID: 18763123 DOI: 10.1007/bf02882052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/1998] [Indexed: 10/22/2022]
Abstract
By using the EST strategy for identifying novel members belonging to homologous gene families, a novel fulklength cDNA encoding a protein significantly homologous to UDP-Gal: N-acetylglucosamine beta-1, 4-galactosyltransferase (GalT) was isolated from a human testis cDNA library. A nucleotide sequence of 2 173 bp long was determined to contain an open reading frame of 1 032 nucleotides (344 amino acids). In view of the homology to memben of the galactosyltransferase gene family and especially the closest relationship toGallus gallus GalT type I (CK I), the predicted product of the novel cDNA was designated as human beta-1,4-galactosyltransferase homolog I (HumGT-H1). Its mRNA is present in different degrees in 16 tissues examined. Southern analysis of human genomic DNA revealed its locus on chromosome 3.
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Affiliation(s)
- Y Fan
- State Key Laboratory of Genetic Engineering, Institute of Genetics, Fudan University, 200433, Shanghai, China
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Dai F, Feng D, Cao Q, Ye H, Zhang C, Xia W, Zuo J. Developmental differences in carcass, meat quality and muscle fibre characteristics between the Landrace and a Chinese native pig. S AFR J ANIM SCI 2010. [DOI: 10.4314/sajas.v39i4.51126] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Smith V, Dai F, Spitz M, Peters GJ, Fiebig HH, Hussain A, Burger AM. Telomerase activity and telomere length in human tumor cells with acquired resistance to anticancer agents. J Chemother 2010; 21:542-9. [PMID: 19933046 DOI: 10.1179/joc.2009.21.5.542] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Telomeres and telomerase are targets for anticancer drug development and specific inhibitors are currently under clinical investigation. However, it has been reported that standard cytotoxic agents can affect telomere length and telomerase activity suggesting that they also have of a role in drug resistance. in this study, telomere lengths and telomerase activity as well as drug efflux pump expression, glutathione (GSH) levels and polyadenosine-ribose polymerase (PARP) cleavage were assessed in a panel of human tumor cell lines made resistant to vindesine, gemcitabine and cisplatin. these included two lung cancer cell lines resistant to vindesine (LXFL 529L/Vind, LXFA 526L/Vind), a renal cancer cell line (RXF944L/Gem) and an ovarian cancer cell line (AG6000) resistant to gemcitabine, and one resistant to cisplatin (ADDP). The resistant clones were compared to their parental lines and evaluated for cross resistance to other cytotoxic agents. Several drug specific resistance patterns were found, and various complex patterns of cross resistance emerged from some cell lines, but these mechanisms of resistance could not be related to drug efflux pump expression, GSH levels or pARp cleavage. However, all displayed changes in telomerase activity and/or telomere length. Our studies present evidence that telomere maintenance should be taken into consideration in efforts not only to overcome drug resistance, but also to optimize the use of telomere-based therapeutics.
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Affiliation(s)
- V Smith
- Institute for Experimental Oncology, Oncotest GmbH, Freiburg, Germany
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Dai F, Xia K, Luo SN. Semicircular bend testing with split Hopkinson pressure bar for measuring dynamic tensile strength of brittle solids. Rev Sci Instrum 2008; 79:123903. [PMID: 19123575 DOI: 10.1063/1.3043420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
We propose and validate an indirect tensile testing method to measure the dynamic tensile strength of rocks and other brittle solids: semicircular bend (SCB) testing with a modified split Hopkinson pressure bar (SHPB) system. A strain gauge is mounted near the failure spot on the specimen to determine the rupture time. The momentum trap technique is utilized to ensure single pulse loading for postmortem examination. Tests without and with pulse shaping are conducted on rock specimens. The evolution of tensile stress at the failure spot is determined via dynamic and quasistatic finite element analyses with the dynamic loads measured from SHPB as inputs. Given properly shaped incident pulse, far-field dynamic force balance is achieved and the peak of the loading matches in time with the rupture onset of the specimen. In addition, the dynamic tensile stress history at the failure spot obtained from the full dynamic finite element analysis agrees with the quasistatic analysis. The opposite occurs for the test without pulse shaping. These results demonstrate that when the far-field dynamic force balance is satisfied, the inertial effects associated with stress wave loading are minimized and thus one can apply the simple quasistatic analysis to obtain the tensile strength in the SCB-SHPB testing. This method provides a useful and cost effective way to measure indirectly the dynamic tensile strength of rocks and other brittle materials.
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Affiliation(s)
- F Dai
- Department of Civil Engineering and Lassonde Institute, University of Toronto, Ontario M5S 1A4, Canada
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Dai F, Sun G, Aberg K, Keighley ED, Indugula SR, Roberts ST, Smelser D, Viali S, Jin L, Deka R, Weeks DE, McGarvey ST. A whole genome linkage scan identifies multiple chromosomal regions influencing adiposity-related traits among Samoans. Ann Hum Genet 2008; 72:780-92. [PMID: 18616661 DOI: 10.1111/j.1469-1809.2008.00462.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We conducted a genome-wide scan in 46 pedigrees, with 671 phenotyped adults, from the independent nation of Samoa to map quantitative trait loci (QTLs) for adiposity-related phenotypes, including body mass index (BMI), abdominal circumference (ABDCIR), percent body fat (%BFAT), and fasting serum leptin and adiponectin. A set of 378 autosomal and 14 X chromosomal microsatellite markers were genotyped in 572 of the adults. Significant genetic correlations (0.82-0.96) were detected between pairs of BMI, ABDCIR, %BFAT and leptin. Suggestive linkages were found on 13q31 (LOD = 2.30 for leptin, LOD = 2.48 for %BFAT, LOD = 2.04 for ABDCIR, and LOD = 2.09 for BMI) and on 9p22 (LOD = 3.08 for ABDCIR and LOD = 2.53 for %BFAT). Furthermore, bivariate linkage analyses indicated that the genetic regions on 9p22 (bivariate LOD 2.35-3.10, LOD(eq) (1df) 1.88-2.59) and 13q31 (bivariate LOD 1.96-2.64, LOD(eq) 1.52-2.21) might harbor common major genes with pleiotropic effects. Other regions showing suggestive linkage included 4q22 (LOD = 2.95) and 7p14 (LOD = 2.64) for %BFAT, 2q13 for adiponectin (LOD = 2.05) and 19q12 for BMI-adjusted leptin (LOD = 2.03). Further fine mapping of these regions may help identify the genetic variants contributing to the development of obesity in Samoan adults.
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Affiliation(s)
- F Dai
- Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
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Dai F, Keighley ED, Sun G, Indugula SR, Roberts ST, Aberg K, Smelser D, Tuitele J, Jin L, Deka R, Weeks DE, McGarvey ST. Genome-wide scan for adiposity-related phenotypes in adults from American Samoa. Int J Obes (Lond) 2007; 31:1832-42. [PMID: 17621312 DOI: 10.1038/sj.ijo.0803675] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE To detect quantitative trait loci influencing adiposity-related phenotypes assessed by body mass index (BMI), abdominal circumference (ABDCIR), percent body fat (%BFAT) and fasting serum leptin and adiponectin using a whole genome linkage scan of families from American Samoa. DESIGN Family-based linkage analysis, the probands and family members were unselected for obesity. SUBJECTS A total of 583 phenotyped American Samoan adults, of which 578 were genotyped in 34 pedigrees. MEASUREMENTS A total of 377 autosomal and 18 X chromosome microsatellite markers were typed at an approximate average spacing of 10 cM spanning the genome. Multipoint LOD (logarithm of the odds) scores were calculated using variance-components approaches and SOLAR/LOKI software. The covariates simultaneously evaluated were age, sex, education, farm work and cigarette smoking, with a significance level of 0.1. Due to the stochastic nature of LOKI, we report the average of maximum LOD scores from 10 runs. RESULTS Significant linkage to leptin was found at 6q32.2 with LOD of 3.83. Suggestive linkage to leptin was found at 16q21:LOD=2.98, 1q42.2:LOD=1.97, 5q11.2:LOD=2.08, 12q24.23:LOD=2.00, 19p13.3:LOD=2.05; adiponectin was linked to 13q33.1-q22.1:LOD=2.41; %BFAT was linked to 16q12.2-q21, LOD=2.24; ABDCIR was linked to 16q23.1:LOD=1.95; %BFAT-adjusted leptin to 14q12, LOD=2.01; %BFAT-adjusted ABDCIR to 1q31.1, LOD=2.36, to 3q27.3-q28, LOD=2.10 and to 12p12.3, LOD=2.04. CONCLUSION We found strong evidence for a major locus on 6q23.2 influencing serum leptin levels in American Samoans. The 16q21 region appears to harbor a susceptibility locus that has significant pleiotrophic effects on phenotypes BMI, %BFAT, leptin and ABDCIR as shown by bivariate linkage analyses. Several other loci of varying significance were detected across the genome.
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Affiliation(s)
- F Dai
- Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA 02912, USA
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Phatak P, Cookson JC, Dai F, Smith V, Gartenhaus RB, Stevens MFG, Burger AM. Telomere uncapping by the G-quadruplex ligand RHPS4 inhibits clonogenic tumour cell growth in vitro and in vivo consistent with a cancer stem cell targeting mechanism. Br J Cancer 2007; 96:1223-33. [PMID: 17406367 PMCID: PMC2360152 DOI: 10.1038/sj.bjc.6603691] [Citation(s) in RCA: 144] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2006] [Revised: 02/14/2007] [Accepted: 02/16/2007] [Indexed: 01/19/2023] Open
Abstract
The pentacyclic acridinium methosulfate salt RHPS4 induces the 3'single-stranded guanine-rich telomeric overhang to fold into a G-quadruplex structure. Stabilisation of the latter is incompatible with an attachment of telomerase to the telomere and thus G-quadruplex ligands can effectively inhibit both the catalytic and capping functions of telomerase. In this study, we examined mechanisms underlying telomere uncapping by RHPS4 in uterus carcinoma cells (UXF1138L) with short telomeres and compared the susceptibility of bulk and clonogenic cancer cells to the G-quadruplex ligand. We show that treatment of UXF1138L cells with RHPS4 leads to the displacement of the telomerase catalytic subunit (hTERT) from the nucleus, induction of telomere-initiated DNA-damage signalling and chromosome fusions. We further report that RHPS4 is more potent against cancer cells that grow as colonies in soft agar than cells growing as monolayers. Human cord blood and HEK293T embryonic kidney cell colony forming units, however, were more resistant to RHPS4. RHPS4-treated UXF1138L xenografts had a decreased clonogenicity, showed loss of nuclear hTERT expression and an induction of mitotic abnormalities compared with controls. Although single-agent RHPS4 had limited in vivo efficacy, a combination of RHPS4 with the mitotic spindle poison Taxol caused tumour remissions and further enhancement of telomere dysfunction.
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Affiliation(s)
- P Phatak
- Department of Pharmacology and Experimental Therapeutics, Marlene and Stewart Greenebaum Cancer Center, School of Medicine, University of Maryland, Baltimore, MD 21201, USA.
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Targonsky ED, Dai F, Koshkin V, Karaman GT, Gyulkhandanyan AV, Zhang Y, Chan CB, Wheeler MB. alpha-lipoic acid regulates AMP-activated protein kinase and inhibits insulin secretion from beta cells. Diabetologia 2006; 49:1587-98. [PMID: 16752177 DOI: 10.1007/s00125-006-0265-9] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2005] [Accepted: 02/27/2006] [Indexed: 01/08/2023]
Abstract
AIMS/HYPOTHESIS The antioxidant compound alpha-lipoic acid (alpha-LA) possesses antidiabetic and anti-obesity properties. In the hypothalamus, alpha-LA suppresses appetite and prevents obesity by inhibiting AMP-activated protein kinase (AMPK). Given the therapeutic potential of alpha-LA for the treatment of type 2 diabetes and obesity, and the importance of AMPK in beta cells, we examined the effect of alpha-LA on pancreatic beta cell function. MATERIALS AND METHODS Isolated rat islets and MIN6 beta cells were treated acutely (15-90 min) or chronically (18-24 h) with alpha-LA or the known AMPK-activating compounds 5'-amino-imidazole-4-carboxamide ribonucleoside (AICAR) and metformin. Insulin secretion, the AMPK-signalling pathway, mitochondrial function and cell growth were assessed. RESULTS Acute or chronic treatment of islets and MIN6 cells with alpha-LA led to dose-dependent rises in phosphorylation of the AMPK alpha-subunit and acetyl CoA carboxylase. Chronic exposure to alpha-LA, AICAR or metformin caused a reduction in insulin secretion. alpha-LA inhibited the p70 s6 kinase translational control pathway, and inhibited MIN6 growth in a manner similar to rapamycin. Unlike AICAR and metformin, alpha-LA also acutely inhibited insulin secretion. Examination of the effect of alpha-LA on mitochondrial function showed that acute treatment with this compound elevated reactive oxygen species (ROS) production and enhanced mitochondrial depolarisation induced by Ca(2+). CONCLUSIONS/INTERPRETATION This study is the first to demonstrate that alpha-LA directly affects beta cell function. The chronic effects of alpha-LA include AMPK activation and reductions in insulin secretion and content, and cell growth. Acutely, alpha-LA also inhibits insulin secretion, an effect probably involving the ROS-induced impairment of mitochondrial function.
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Affiliation(s)
- E D Targonsky
- Department of Physiology, University of Toronto, 1 King's College Circle, Toronto, ON, Canada, M5S 1A8
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Smith V, Dai F, Peters G, Fiebig H, Burger A. 622 Resistance to cytotoxic drugs is associated with changes in telomere length. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)80630-x] [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: 11/15/2022] Open
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MacDonald PE, Joseph JW, Yau D, Diao J, Asghar Z, Dai F, Oudit GY, Patel MM, Backx PH, Wheeler MB. Impaired glucose-stimulated insulin secretion, enhanced intraperitoneal insulin tolerance, and increased beta-cell mass in mice lacking the p110gamma isoform of phosphoinositide 3-kinase. Endocrinology 2004; 145:4078-83. [PMID: 15231713 DOI: 10.1210/en.2004-0028] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Phosphoinositide 3-kinase (PI3 kinase) has been implicated in G protein-coupled receptor regulation of pancreatic beta-cell growth and glucose-stimulated insulin secretion. The G protein-activated p110gamma isoform of PI3 kinase was detected in insulinoma cells, mouse islets, and human islets. In 7- to 10-wk-old mice, knockout of p110gamma reduced the plasma insulin response to ip glucose injection and impaired first and second phase glucose-stimulated insulin secretion from pancreata perfused ex vivo. The p110gamma -/- mice responded to preinjection with the glucagon-like peptide-1 receptor agonist exendin 4, such that plasma glucose and insulin responses to ip glucose injection were not different from wild types. Mice lacking p110gamma were not diabetic and were only slightly glucose intolerant (ip glucose injection) compared with wild types, in part due to enhanced responsiveness to insulin as determined by an ip insulin tolerance test. Despite severely reduced insulin secretion in these animals, the p110gamma -/- mice had greater pancreatic insulin content, and an increased beta-cell mass due to beta-cell hypertrophy. These surprising results suggest that the G protein-coupled p110gamma isoform of PI3 kinase is not central to the development or maintenance of sufficient beta-cell mass but positively regulates glucose-stimulated insulin secretion.
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Affiliation(s)
- P E MacDonald
- University of Toronto, Department of Physiology, Toronto, Canada.
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Tsai RY, Chang CS, Chu CW, Chen T, Dai F, Lin D, Yan S, Chang A. Thermally stable narrow-bandpass filter prepared by reactive ion-assisted sputtering. Appl Opt 2001; 40:1593-1598. [PMID: 18357152 DOI: 10.1364/ao.40.001593] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Thermal stabilities of three-cavity narrow-bandpass (NB) filters with high-index half-wave spacers and 78-102 layers of Ta(2)O(5) and SiO(2) prepared by reactive ion-assisted bipolar direct-current (dc) magnetron sputtering of tantalum and silicon targets, respectively, were investigated. Pure argon and pure oxygen were used as the sputtering gas and the reactant, respectively. The oxygen gas was introduced and ionized through the ion gun and toward the unheated BK7 glass substrate. The refractive indices of single-layer Ta(2)O(5) and SiO(2) films were 2.1 and 1.45, respectively, at 1550 nm, which were comparable with those of films prepared by other ion-assisted coating techniques. The moisture-resistant properties of the films were excellent as evidenced from the water-immersion test, implying that the packing density of the films was close to that of their bulk materials. The temperature-dependant wavelength shifts of the NB filters were <3 x 10(-3) nm/ degrees C at temperatures of <75 degrees C, indicating that the temperature-induced wavelength shift of the filter was <0.15 nm when the temperatures were raised from room temperature to 75 degrees C, which was compliant with Bellcore GR-1209-CORE generic requirements of NB filters used for optical-fiber communication systems.
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Niu Q, He S, Chen Y, Dai F. [Effect on manganese exposure on blood prolactin and plasma renin activity]. Wei Sheng Yan Jiu 2001; 30:91-2. [PMID: 11321960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
In order to study the adverse effects of manganese on neuro-endocrine and cardiovascular system, radioimmunoassay (RIA) was used to test the blood prolactin concentration and plasma renin activity among manganese-exposed workers. The result showed that the blood prolactin concentration and Plasma renin activity in manganese exposed workers were significantly higher than those of control group. It suggested that manganese exposure might affect the function at tubero-infundibular area and renin-angiotensin aldosterone system.
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Affiliation(s)
- Q Niu
- Department of Occupational Health, Shanxi Medical University, Taiyuan 030001, China
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Dong Z, Chen Y, Dai F. [The hEGF expression of gene--transferred human epithelium after its grafting on porcine surgical wound]. Zhonghua Shao Shang Za Zhi 2001; 17:22-4. [PMID: 11876905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
OBJECTIVE To investigate the hEGF expression of gene -- transferred human epithelium after its grafting on porcine surgical wound. METHODS Gene -- transferred and normal epithelia were implanted on the biological silicone membrane and then grafted on porcine surgical wound. The tissue samples were harvested from the wound and detected for the hEGF expression with immunohistochemical method on 1, 3, 5, 8 and 12 post -- grafting days. RESULTS There existed positive hEGF expression in the wound grafted with gene -- transferred epithelia and negative hEGF expression in the wound grafted with normal epithelium. CONCLUSION Gene -- transferred epithelium could express hEGF on the grafted wound.
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Affiliation(s)
- Z Dong
- Department of Burns and Plastic Surgery, Corps Hospital, Chinese People's Armed Police Force of Shanghai, Shanghai 201103 P.R. China
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