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Liu ZX, Long ZL, Yang ZR, Shi SY, Xu XR, Zhao HY, Yang ZY, Fu Z, Song HB, Lin TF, Zhan SY, Sun F. [Progress in methodological research on bridging the efficacy-effectiveness gap of clinical interventions(2): to improve the extrapolation of efficacy]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:579-584. [PMID: 38678356 DOI: 10.3760/cma.j.cn112338-20230925-00190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/29/2024]
Abstract
Objective: Randomized controlled trials (RCT) usually have strict implementation criteria. The included subjects' characteristics of the conditions for the intervention implementation are quite different from the actual clinical environment, resulting in discrepancies between the risk-benefit of interventions in actual clinical use and the risk-benefit shown in RCT. Therefore, some methods are needed to enhance the extrapolation of RCT results to evaluate the real effects of drugs in real people and clinical practice settings. Methods: Six databases (PubMed, Embase, Web of Science, CNKI, Wanfang Data, and VIP) were searched up to 31st December 2022 with detailed search strategies. A scoping review method was used to integrate and qualitatively describe the included literature inductively. Results: A total of 12 articles were included. Three methods in the included literature focused on: ①improving the design of traditional RCT to increase population representation; ②combining RCT Data with real-world data (RWD) for analysis;③calibrating RCT results according to real-world patient characteristics. Conclusions: Improving the design of RCT to enhance the population representation can improve the extrapolation of the results of RCT. Combining RCT data with RWD can give full play to the advantages of data from different sources; the results of the RCT were calibrated against real-world population characteristics so that the effects of interventions in real-world patient populations can be predicted.
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Affiliation(s)
- Z X Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - Z L Long
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - Z R Yang
- School of Computer Science and Control Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - S Y Shi
- China Rehabilitation Science Institute, China Disability Control and Prevention Center, China Disable Persons' Federation, Beijing 100068, China
| | - X R Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - H Y Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - Z Y Yang
- School of Public Health and Primary Care, The Chinese University of Hong Kong, Hongkong 999077, China
| | - Z Fu
- Administration of Hainan Boao Lecheng International Medical Tourism Pilot Zone, Hainan Institute of Real World Data, Hainan 571437, China
| | - H B Song
- Department of Traditional Chinese Medicine Monitoring and Evaluation, Center for Drug Reevalaution, National Medical Products Administration, Beijing 100076, China Key Laboratory for Research and Evaluation of Pharmacovigilance, National Medical Products Administration, Beijing 100076, China
| | - T F Lin
- Biomedical Information Technology Research Center , Institute of Advanced Computing and Digital Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China Clinical Epidemiology Research Center, Peking University Third Hospital, Beijing 100191, China
| | - F Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China Administration of Hainan Boao Lecheng International Medical Tourism Pilot Zone, Hainan Institute of Real World Data, Hainan 571437, China
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Liu ZX, Long ZL, Yang ZR, Shi SY, Xu XR, Zhao HY, Yang ZY, Fu Z, Song HB, Lin TF, Zhan SY, Sun F. [Progress in methodological research on bridging the efficacy-effectiveness gap of clinical interventions (1): to improve the validity of real-world evidence]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:286-293. [PMID: 38413070 DOI: 10.3760/cma.j.cn112338-20230925-00189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
Objective: Differences between randomized controlled trial (RCT) results and real world study (RWS) results may not represent a true efficacy-effectiveness gap because efficacy-effectiveness gap estimates may be biased when RWS and RCT differ significantly in study design or when there is bias in RWS result estimation. Secondly, when there is an efficacy- effectiveness gap, it should not treat every patient the same way but assess the real-world factors influencing the intervention's effectiveness and identify the subgroup likely to achieve the desired effect. Methods: Six databases (PubMed, Embase, Web of Science, CNKI, Wanfang Data, and VIP) were searched up to 31st December 2022 with detailed search strategies. A scoping review method was used to integrate and qualitatively describe the included literature inductively. Results: Ten articles were included to discuss how to use the RCT research protocol as a template to develop the corresponding RWS research protocol. Moreover, based on correctly estimating the efficacy-effectiveness gap, evaluate the intervention effect in the patient subgroup to confirm the subgroup that can achieve the expected benefit-risk ratio to bridge the efficacy-effectiveness gap. Conclusion: Using real-world data to simulate key features of randomized controlled clinical trial study design can improve the authenticity and effectiveness of study results and bridge the efficacy-effectiveness gap.
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Affiliation(s)
- Z X Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - Z L Long
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - Z R Yang
- School of Computer Science and Control Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - S Y Shi
- China Rehabilitation Science Institute, China Disability Control and Prevention Center, China Disable Persons' Federation, Beijing 100068, China
| | - X R Xu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - H Y Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China
| | - Z Y Yang
- School of Public Health and Primary Care, the Chinese University of Hong Kong, Hong Kong 999077, China
| | - Z Fu
- Administration of Hainan Boao Lecheng International Medical Tourism Pilot Zone, Hainan Institute of Real World Data, Haikou 571437, China
| | - H B Song
- Department of Traditional Chinese Medicine Monitoring and Evaluation, Center for Drug Reevalaution, National Medical Products Administration, Beijing 100076, China Key Laboratory for Research and Evaluation of Pharmacovigilance, National Medical Products Administration, Beijing 100076, China
| | - T F Lin
- Biomedical Information Technology Research Center , Institute of Advanced Computing and Digital Engineering, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences,Shenzhen 518055, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China Clinical Epidemiology Research Center, Peking University Third Hospital, Beijing 100191, China
| | - F Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing 100191, China Administration of Hainan Boao Lecheng International Medical Tourism Pilot Zone, Hainan Institute of Real World Data, Haikou 571437, China
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Valentini P, Akula S, Alvarado-Vazquez A, Hallgren J, Fu Z, Racicot B, Braasch I, Thorpe M, Hellman L. Extended Cleavage Specificity of two Hematopoietic Serine Proteases from a Ray-Finned Fish, the Spotted Gar ( Lepisosteus oculatus). Int J Mol Sci 2024; 25:1669. [PMID: 38338947 PMCID: PMC10855939 DOI: 10.3390/ijms25031669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
The extended cleavage specificities of two hematopoietic serine proteases originating from the ray-finned fish, the spotted gar (Lepisosteus oculatus), have been characterized using substrate phage display. The preference for particular amino acids at and surrounding the cleavage site was further validated using a panel of recombinant substrates. For one of the enzymes, the gar granzyme G, a strict preference for the aromatic amino acid Tyr was observed at the cleavable P1 position. Using a set of recombinant substrates showed that the gar granzyme G had a high selectivity for Tyr but a lower activity for cleaving after Phe but not after Trp. Instead, the second enzyme, gar DDN1, showed a high preference for Leu in the P1 position of substrates. This latter enzyme also showed a high preference for Pro in the P2 position and Arg in both P4 and P5 positions. The selectivity for the two Arg residues in positions P4 and P5 suggests a highly specific substrate selectivity of this enzyme. The screening of the gar proteome with the consensus sequences obtained by substrate phage display for these two proteases resulted in a very diverse set of potential targets. Due to this diversity, a clear candidate for a specific immune function of these two enzymes cannot yet be identified. Antisera developed against the recombinant gar enzymes were used to study their tissue distribution. Tissue sections from juvenile fish showed the expression of both proteases in cells in Peyer's patch-like structures in the intestinal region, indicating they may be expressed in T or NK cells. However, due to the lack of antibodies to specific surface markers in the gar, it has not been possible to specify the exact cellular origin. A marked difference in abundance was observed for the two proteases where gar DDN1 was expressed at higher levels than gar granzyme G. However, both appear to be expressed in the same or similar cells, having a lymphocyte-like appearance.
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Affiliation(s)
- Paolo Valentini
- Department of Cell and Molecular Biology, Uppsala University, P.O. Box 596, SE-751 24 Uppsala, Sweden; (P.V.); (S.A.); (Z.F.); (M.T.)
| | - Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, P.O. Box 596, SE-751 24 Uppsala, Sweden; (P.V.); (S.A.); (Z.F.); (M.T.)
| | - Abigail Alvarado-Vazquez
- Department of Medical Biochemistry and Microbiology, Uppsala University Biomedical Centre (BMC), P.O. Box 582, SE-751 23 Uppsala, Sweden; (A.A.-V.); (J.H.)
| | - Jenny Hallgren
- Department of Medical Biochemistry and Microbiology, Uppsala University Biomedical Centre (BMC), P.O. Box 582, SE-751 23 Uppsala, Sweden; (A.A.-V.); (J.H.)
| | - Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, P.O. Box 596, SE-751 24 Uppsala, Sweden; (P.V.); (S.A.); (Z.F.); (M.T.)
| | - Brett Racicot
- Department of Integrative Biology, Michigan State University, East Lansing, MI 48825, USA; (B.R.); (I.B.)
| | - Ingo Braasch
- Department of Integrative Biology, Michigan State University, East Lansing, MI 48825, USA; (B.R.); (I.B.)
- Ecology, Evolution and Behavior Program, Michigan State University, East Lansing, MI 48825, USA
| | - Michael Thorpe
- Department of Cell and Molecular Biology, Uppsala University, P.O. Box 596, SE-751 24 Uppsala, Sweden; (P.V.); (S.A.); (Z.F.); (M.T.)
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, P.O. Box 596, SE-751 24 Uppsala, Sweden; (P.V.); (S.A.); (Z.F.); (M.T.)
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Thorpe M, Akula S, Fu Z, Hellman L. The Extended Cleavage Specificity of Channel Catfish Granzyme-like II, A Highly Specific Elastase, Expressed by Natural Killer-like Cells. Int J Mol Sci 2023; 25:356. [PMID: 38203526 PMCID: PMC10778636 DOI: 10.3390/ijms25010356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
The extended cleavage specificity of catfish granzyme-like II has been characterized using substrate phage display. The preference for particular amino acids at and surrounding the cleavage site was further validated by using a panel of recombinant substrates. This serine protease, which has previously been isolated as cDNA from a catfish natural killer-like cell line showed a preference for Ala in the P1 position of the substrate, and for multiple basic amino acids N-terminally of the cleavage site. A closely related zebrafish serine protease (zebrafish esterase-like) showed a very similar cleavage specificity, indicating an evolutionary conservation of this protease specificity among various fish species. Two catfish serine proteases, originating from NK-like cells, have now been isolated and characterized. One of them is highly specific met-ase with similar characteristics as the mammalian granzyme M. This enzyme may be involved in the induction of apoptosis in virus-infected cells, with a potential target in (catfish) caspase 6. In contrast to catfish granzyme-like I, the second enzyme analyzed here does not seem to have a direct counterpart in mammalian NK cells, and its role in the immune function of catfish NK cells is, therefore, still not known. However, this enzyme seems to be able to cleave a number of cytoskeletal proteins, indicating a separate strategy to induce apoptosis in target cells. Both of these enzymes are very interesting targets for further studies of their roles in catfish immunity, as enzymes with similar specificities have also been identified in zebrafish.
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Affiliation(s)
| | | | | | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, Box 596, SE-751 24 Uppsala, Sweden; (M.T.); (S.A.); (Z.F.)
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Iraji A, Fu Z, Faghiri A, Duda M, Chen J, Rachakonda S, DeRamus T, Kochunov P, Adhikari BM, Belger A, Ford JM, Mathalon DH, Pearlson GD, Potkin SG, Preda A, Turner JA, van Erp TGM, Bustillo JR, Yang K, Ishizuka K, Faria A, Sawa A, Hutchison K, Osuch EA, Theberge J, Abbott C, Mueller BA, Zhi D, Zhuo C, Liu S, Xu Y, Salman M, Liu J, Du Y, Sui J, Adali T, Calhoun VD. Identifying canonical and replicable multi-scale intrinsic connectivity networks in 100k+ resting-state fMRI datasets. Hum Brain Mapp 2023; 44:5729-5748. [PMID: 37787573 PMCID: PMC10619392 DOI: 10.1002/hbm.26472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 04/30/2023] [Accepted: 06/19/2023] [Indexed: 10/04/2023] Open
Abstract
Despite the known benefits of data-driven approaches, the lack of approaches for identifying functional neuroimaging patterns that capture both individual variations and inter-subject correspondence limits the clinical utility of rsfMRI and its application to single-subject analyses. Here, using rsfMRI data from over 100k individuals across private and public datasets, we identify replicable multi-spatial-scale canonical intrinsic connectivity network (ICN) templates via the use of multi-model-order independent component analysis (ICA). We also study the feasibility of estimating subject-specific ICNs via spatially constrained ICA. The results show that the subject-level ICN estimations vary as a function of the ICN itself, the data length, and the spatial resolution. In general, large-scale ICNs require less data to achieve specific levels of (within- and between-subject) spatial similarity with their templates. Importantly, increasing data length can reduce an ICN's subject-level specificity, suggesting longer scans may not always be desirable. We also find a positive linear relationship between data length and spatial smoothness (possibly due to averaging over intrinsic dynamics), suggesting studies examining optimized data length should consider spatial smoothness. Finally, consistency in spatial similarity between ICNs estimated using the full data and subsets across different data lengths suggests lower within-subject spatial similarity in shorter data is not wholly defined by lower reliability in ICN estimates, but may be an indication of meaningful brain dynamics which average out as data length increases.
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Affiliation(s)
- A. Iraji
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
- Department of Computer ScienceGeorgia State UniversityAtlantaGeorgiaUSA
| | - Z. Fu
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
| | - A. Faghiri
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
| | - M. Duda
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
| | - J. Chen
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
| | - S. Rachakonda
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
| | - T. DeRamus
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
| | - P. Kochunov
- Maryland Psychiatric Research Center, Department of Psychiatry, School of MedicineUniversity of MarylandBaltimoreMarylandUSA
| | - B. M. Adhikari
- Maryland Psychiatric Research Center, Department of Psychiatry, School of MedicineUniversity of MarylandBaltimoreMarylandUSA
| | - A. Belger
- Department of PsychiatryUniversity of North CarolinaChapel HillNorth CarolinaUSA
| | - J. M. Ford
- Department of PsychiatryUniversity of California San FranciscoSan FranciscoCaliforniaUSA
- San Francisco VA Medical CenterSan FranciscoCaliforniaUSA
| | - D. H. Mathalon
- Department of PsychiatryUniversity of California San FranciscoSan FranciscoCaliforniaUSA
- San Francisco VA Medical CenterSan FranciscoCaliforniaUSA
| | - G. D. Pearlson
- Departments of Psychiatry and Neuroscience, School of MedicineYale UniversityNew HavenConnecticutUSA
| | - S. G. Potkin
- Department of Psychiatry and Human BehaviorUniversity of California IrvineIrvineCaliforniaUSA
| | - A. Preda
- Department of Psychiatry and Human BehaviorUniversity of California IrvineIrvineCaliforniaUSA
| | - J. A. Turner
- Department of Psychiatry and Behavioral HealthOhio State University Medical Center in ColumbusColumbusOhioUSA
| | - T. G. M. van Erp
- Clinical Translational Neuroscience Laboratory, Department of Psychiatry and Human BehaviorUniversity of California IrvineIrvineCaliforniaUSA
| | - J. R. Bustillo
- Department of Psychiatry and Behavioral SciencesUniversity of New MexicoAlbuquerqueNew MexicoUSA
| | - K. Yang
- Department of Psychiatry, School of MedicineJohns Hopkins UniversityBaltimoreMarylandUSA
| | - K. Ishizuka
- Department of Psychiatry, School of MedicineJohns Hopkins UniversityBaltimoreMarylandUSA
| | - A. Faria
- Department of Psychiatry, School of MedicineJohns Hopkins UniversityBaltimoreMarylandUSA
| | - A. Sawa
- Departments of Psychiatry, Neuroscience, Biomedical Engineering, Pharmacology, and Genetic MedicineJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Mental HealthJohns Hopkins University Bloomberg School of Public HealthBaltimoreMarylandUSA
| | - K. Hutchison
- Department of PsychologyUniversity of ColoradoBoulderColoradoUSA
| | - E. A. Osuch
- Department of Psychiatry, Schulich School of Medicine and DentistryLondon Health Sciences Centre, Lawson Health Research InstituteLondonCanada
| | - J. Theberge
- Department of Psychiatry, Schulich School of Medicine and DentistryLondon Health Sciences Centre, Lawson Health Research InstituteLondonCanada
| | - C. Abbott
- Department of Psychiatry (CCA)University of New MexicoAlbuquerqueNew MexicoUSA
| | - B. A. Mueller
- Department of PsychiatryUniversity of MinnesotaMinneapolisMinnesotaUSA
| | - D. Zhi
- The State Key Lab of Cognitive Neuroscience and LearningBeijing Normal UniversityBeijingChina
| | - C. Zhuo
- Tianjin Mental Health CenterNankai University Affiliated Anding HospitalTianjinChina
| | - S. Liu
- The Department of PsychiatryFirst Clinical Medical College/First Hospital of Shanxi Medical UniversityTaiyuanChina
| | - Y. Xu
- The Department of PsychiatryFirst Clinical Medical College/First Hospital of Shanxi Medical UniversityTaiyuanChina
| | - M. Salman
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
- School of Electrical & Computer EngineeringGeorgia Institute of TechnologyAtlantaGeorgiaUSA
| | - J. Liu
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
- Department of Computer ScienceGeorgia State UniversityAtlantaGeorgiaUSA
| | - Y. Du
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
- School of Computer and Information TechnologyShanxi UniversityTaiyuanChina
| | - J. Sui
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
- The State Key Lab of Cognitive Neuroscience and LearningBeijing Normal UniversityBeijingChina
| | - T. Adali
- Department of CSEEUniversity of Maryland Baltimore CountyBaltimoreMarylandUSA
| | - V. D. Calhoun
- Tri‐Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State UniversityGeorgia Institute of Technology, and Emory UniversityAtlantaGeorgiaUSA
- Department of Computer ScienceGeorgia State UniversityAtlantaGeorgiaUSA
- Department of Psychiatry, School of MedicineJohns Hopkins UniversityBaltimoreMarylandUSA
- School of Electrical & Computer EngineeringGeorgia Institute of TechnologyAtlantaGeorgiaUSA
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Akula S, Welinder C, Fu Z, Olsson AK, Hellman L. Identification of the Major Protein Components of Human and Cow Saliva. Int J Mol Sci 2023; 24:16838. [PMID: 38069163 PMCID: PMC10705902 DOI: 10.3390/ijms242316838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 11/21/2023] [Accepted: 11/26/2023] [Indexed: 12/18/2023] Open
Abstract
Cows produce saliva in very large quantities to lubricate and facilitate food processing. Estimates indicate an amount of 50-150 L per day. Human saliva has previously been found to contain numerous antibacterial components, such as lysozyme, histatins, members of the S-100 family and lactoferrin, to limit pathogen colonization. Cows depend on a complex microbial community in their digestive system for food digestion. Our aim here was to analyze how this would influence the content of their saliva. We therefore sampled saliva from five humans and both nose secretions and saliva from six cows and separated the saliva on SDS-PAGE gradient gels and analyzed the major protein bands with LC-MS/MS. The cow saliva was found to be dominated by a few major proteins only, carbonic anhydrase 6, a pH-stabilizing enzyme and the short palate, lung and nasal epithelium carcinoma-associated protein 2A (SPLUNC2A), also named bovine salivary protein 30 kDa (BSP30) or BPIFA2B. This latter protein has been proposed to play a role in local antibacterial response by binding bacterial lipopolysaccharides (LPSs) and inhibiting bacterial growth but may instead, according to more recent data, primarily have surfactant activity. Numerous peptide fragments of mucin-5B were also detected in different regions of the gel in the MS analysis. Interestingly, no major band on gel was detected representing any of the antibacterial proteins, indicating that cows may produce them at very low levels that do not harm the microbial flora of their digestive system. The nose secretions of the cows primarily contained the odorant protein, a protein thought to be involved in enhancing the sense of smell of the olfactory receptors and the possibility of quickly sensing potential poisonous food components. High levels of secretory IgA were also found in one sample of cow mouth drippings, indicating a strong upregulation during an infection. The human saliva was more complex, containing secretory IgA, amylase, carbonic anhydrase 6, lysozyme, histatins and a number of other less abundant proteins, indicating a major difference to the saliva of cows that show very low levels of antibacterial components, most likely to not harm the microbial flora of the rumen.
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Affiliation(s)
- Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.)
| | - Charlotte Welinder
- Department of Clinical Sciences Lund, Division of Mass Spectrometry, Lund University, SE-221 00 Lund, Sweden;
| | - Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.)
| | - Anna-Karin Olsson
- Department of Medical Biochemistry and Microbiology, The Biomedical Center, Box 582, SE-751 23 Uppsala, Sweden;
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.)
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Hu X, Han C, Zhang M, Mu Z, Fu Z, Ren J, Qiao K, Jia J, Yu J, Yuan S, Wei Y. Predicting Radiation Esophagitis using 18F-FAPI-04 PET/CT in Patients with LA-ESCC Treated with Concurrent Chemoradiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e303-e304. [PMID: 37785107 DOI: 10.1016/j.ijrobp.2023.06.2323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) This prospective study examined whether 18F-FAPI-04 PET/CT can predict the development and severity of radiation esophagitis (RE) in patients with locally advanced esophageal squamous cell carcinoma (LA-ESCC) treated with concurrent chemoradiotherapy. MATERIALS/METHODS From June 2021 to March 2022, images were prospectively collected from LA-ESCC patients who underwent 18F-FAPI-04 PET/CT examinations before and during radiotherapy. The development of RE was evaluated weekly according to Radiation Therapy Oncology Group criterion. The target-to-background ratio in blood (TBRblood) was analyzed at each time point and correlated with the onset and severity of RE. Factors that predicted RE were identified by multivariate logistic analyses. RESULTS Thirty patients (median age, 66.5 years [interquartile range: 56¨C71 years]; 22 men) were evaluated. Significantly higher TBRblood (during radiotherapy, mean: 3.06 vs 7.11, P = 0.003) and change in TBRblood compared with pre-RT (ΔTBRblood, mean: 0.67 vs 4.81, P = 0.002) were observed in patients with RE than patients without RE. Those with grade 3 RE had a significantly higher TBRblood (during radiotherapy, mean: 4.55 vs 9.66, P = 0.003) and ΔTBRblood (mean: 2.16 vs 7.50, P = 0.003) compared with those with RE CONCLUSION The ΔTBRblood on 18F-FAPI-04 PET/CT may be effective at identifying patients at risk for the development of RE, especially grade 3 RE.
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Affiliation(s)
- X Hu
- Department of Radiology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - C Han
- Department of Surgery II, Breast Cancer Center, Shandong Cancer Hospital and Institute, Jinan, Shandong, China
| | - M Zhang
- 1.Department of Radiology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China. 2.Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Z Mu
- Department of Pathology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Z Fu
- Shandong Cancer Hospital and Institute, Jinan, China
| | - J Ren
- Department of PET/CT Center, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, China
| | - K Qiao
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - J Jia
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China 2. Department of Radiology, Shandong Cancer Hospital and Institute, Shandong First Medical University, Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - J Yu
- Shandong Cancer Hospital, Shandong University, Jinan, Shandong, China
| | - S Yuan
- Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
| | - Y Wei
- Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, China
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8
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Iraji A, Chen J, Lewis N, Faghiri A, Fu Z, Agcaoglu O, Kochunov P, Adhikari BM, Mathalon D, Pearlson G, Macciardi F, Preda A, van Erp T, Bustillo JR, Díaz-Caneja CM, Andrés-Camazón P, Dhamala M, Adali T, Calhoun V. Spatial Dynamic Subspaces Encode Sex-Specific Schizophrenia Disruptions in Transient Network Overlap and its Links to Genetic Risk. bioRxiv 2023:2023.07.18.548880. [PMID: 37503085 PMCID: PMC10370141 DOI: 10.1101/2023.07.18.548880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Background Recent advances in resting-state fMRI allow us to study spatial dynamics, the phenomenon of brain networks spatially evolving over time. However, most dynamic studies still use subject-specific, spatially-static nodes. As recent studies have demonstrated, incorporating time-resolved spatial properties is crucial for precise functional connectivity estimation and gaining unique insights into brain function. Nevertheless, estimating time-resolved networks poses challenges due to the low signal-to-noise ratio, limited information in short time segments, and uncertain identification of corresponding networks within and between subjects. Methods We adapt a reference-informed network estimation technique to capture time-resolved spatial networks and their dynamic spatial integration and segregation. We focus on time-resolved spatial functional network connectivity (spFNC), an estimate of network spatial coupling, to study sex-specific alterations in schizophrenia and their links to multi-factorial genomic data. Results Our findings are consistent with the dysconnectivity and neurodevelopment hypotheses and align with the cerebello-thalamo-cortical, triple-network, and frontoparietal dysconnectivity models, helping to unify them. The potential unification offers a new understanding of the underlying mechanisms. Notably, the posterior default mode/salience spFNC exhibits sex-specific schizophrenia alteration during the state with the highest global network integration and correlates with genetic risk for schizophrenia. This dysfunction is also reflected in high-dimensional (voxel-level) space in regions with weak functional connectivity to corresponding networks. Conclusions Our method can effectively capture spatially dynamic networks, detect nuanced SZ effects, and reveal the intricate relationship of dynamic information to genomic data. The results also underscore the potential of dynamic spatial dependence and weak connectivity in the clinical landscape.
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Affiliation(s)
- A. Iraji
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Atlanta, GA, USA
- Department of Computer Science, Georgia State University, Atlanta, GA, USA
| | - J. Chen
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Atlanta, GA, USA
| | - N. Lewis
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Atlanta, GA, USA
- Department of CSE, Georgia Institute of Technology, Atlanta, Georgia
| | - A. Faghiri
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Atlanta, GA, USA
| | - Z. Fu
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Atlanta, GA, USA
| | - O. Agcaoglu
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Atlanta, GA, USA
| | - P. Kochunov
- Maryland Psychiatric Research Center, Department of Psychiatry, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - B. M. Adhikari
- Maryland Psychiatric Research Center, Department of Psychiatry, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - D.H. Mathalon
- Department of Psychiatry, University of California San Francisco, San Francisco, CA, USA
- San Francisco VA Medical Center, San Francisco, CA, USA
| | - G.D. Pearlson
- Departments of Psychiatry and Neuroscience, Yale University School of Medicine, New Haven, CT, USA
| | - F. Macciardi
- Department of Psychiatry and Human Behavior, University of California Irvine, Irvine, CA, USA
| | - A. Preda
- Department of Psychiatry and Human Behavior, University of California Irvine, Irvine, CA, USA
| | - T.G.M. van Erp
- Clinical Translational Neuroscience Laboratory, Department of Psychiatry and Human Behavior, University of California Irvine, Irvine, CA, USA
| | - J. R. Bustillo
- Department of Psychiatry and Behavioral Sciences, University of New Mexico, Albuquerque, NM, USA
| | - C. M. Díaz-Caneja
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry and Mental Health, Hospital General Universitario Gregorio Marañón, IiSGM, Madrid, Spain
| | - P. Andrés-Camazón
- Department of Child and Adolescent Psychiatry, Institute of Psychiatry and Mental Health, Hospital General Universitario Gregorio Marañón, IiSGM, Madrid, Spain
| | - M. Dhamala
- Department of Physics and Astronomy, Georgia State University, Atlanta, GA, USA
| | - T. Adali
- Department of CSEE, University of Maryland, Baltimore County, Baltimore, Maryland
| | - V.D. Calhoun
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Atlanta, GA, USA
- Department of CSE, Georgia Institute of Technology, Atlanta, Georgia
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9
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Aybay E, Ryu J, Fu Z, Akula S, Enriquez EM, Hallgren J, Wernersson S, Olsson AK, Hellman L. Extended cleavage specificities of human granzymes A and K, two closely related enzymes with conserved but still poorly defined functions in T and NK cell-mediated immunity. Front Immunol 2023; 14:1211295. [PMID: 37497217 PMCID: PMC10366535 DOI: 10.3389/fimmu.2023.1211295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/23/2023] [Indexed: 07/28/2023] Open
Abstract
Granzymes A and K are two highly homologous serine proteases expressed by mammalian cytotoxic T cells (CTL) and natural killer cells (NK). Granzyme A is the most abundant of the different granzymes (gzms) expressed by these two cell types. Gzms A and K are found in all jawed vertebrates and are the most well conserved of all hematopoietic serine proteases. Their potential functions have been studied extensively for many years, however, without clear conclusions. Gzm A was for many years thought to serve as a key component in the defense against viral infection by the induction of apoptosis in virus-infected cells, similar to gzm B. However, later studies have questioned this role and instead indicated that gzm A may act as a potent inducer of inflammatory cytokines and chemokines. Gzms A and K form clearly separate branches in a phylogenetic tree indicating separate functions. Transcriptional analyses presented here demonstrate the presence of gzm A and K transcripts in both CD4+ and CD8+ T cells. To enable screening for their primary biological targets we have made a detailed analysis of their extended cleavage specificities. Phage display analysis of the cleavage specificity of the recombinant enzymes showed that both gzms A and K are strict tryptases with high selectivity for Arg over Lys in the P1 position. The major differences in the specificities of these two enzymes are located N-terminally of the cleavage site, where gzm A prefers small amino acids such as Gly in the P3 position and shows a relatively relaxed selectivity in the P2 position. In contrast, gzm K prefers large amino acids such as Phe, Tyr, and Trp in both the P2 and P3 positions and does not tolerate negatively charged residues in the P2 position. This major distinction in extended specificities is likely reflected also in preferred in vivo targets of these two enzymes. This information can now be utilized for high-precision screening of primary targets for gzms A and K in search of their highly conserved but still poorly defined functions in vertebrate immunity.
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Affiliation(s)
- Erdem Aybay
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Uppsala, Sweden
| | - Jinhye Ryu
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Uppsala, Sweden
| | - Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Uppsala, Sweden
| | - Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Uppsala, Sweden
- Department of Anatomy, Physiology, and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Erika Mendez Enriquez
- Department of Medical Biochemistry and Microbiology, The Biomedical Center, Uppsala, Sweden
| | - Jenny Hallgren
- Department of Medical Biochemistry and Microbiology, The Biomedical Center, Uppsala, Sweden
| | - Sara Wernersson
- Department of Anatomy, Physiology, and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Anna-Karin Olsson
- Department of Medical Biochemistry and Microbiology, The Biomedical Center, Uppsala, Sweden
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Uppsala, Sweden
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Zhao X, Yang J, Chen R, Qiu C, Li Q, Qiu T, Fu Z, Wang Z, Wu Y, Huang Y, Yang R, Liu W. P150 Psychological distress during hospitalization for breast cancer patients in the outbreak, post-peak, and normalization stages of the COVID-19 pandemic. Breast 2023. [PMCID: PMC10013701 DOI: 10.1016/s0960-9776(23)00267-9] [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: 03/18/2023] Open
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11
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Abe S, Asami S, Eizuka M, Futagi S, Gando A, Gando Y, Gima T, Goto A, Hachiya T, Hata K, Hayashida S, Hosokawa K, Ichimura K, Ieki S, Ikeda H, Inoue K, Ishidoshiro K, Kamei Y, Kawada N, Kishimoto Y, Koga M, Kurasawa M, Maemura N, Mitsui T, Miyake H, Nakahata T, Nakamura K, Nakamura K, Nakamura R, Ozaki H, Sakai T, Sambonsugi H, Shimizu I, Shirai J, Shiraishi K, Suzuki A, Suzuki Y, Takeuchi A, Tamae K, Ueshima K, Watanabe H, Yoshida Y, Obara S, Ichikawa AK, Chernyak D, Kozlov A, Nakamura KZ, Yoshida S, Takemoto Y, Umehara S, Fushimi K, Kotera K, Urano Y, Berger BE, Fujikawa BK, Learned JG, Maricic J, Axani SN, Smolsky J, Fu Z, Winslow LA, Efremenko Y, Karwowski HJ, Markoff DM, Tornow W, Dell'Oro S, O'Donnell T, Detwiler JA, Enomoto S, Decowski MP, Grant C, Li A, Song H. Search for the Majorana Nature of Neutrinos in the Inverted Mass Ordering Region with KamLAND-Zen. Phys Rev Lett 2023; 130:051801. [PMID: 36800472 DOI: 10.1103/physrevlett.130.051801] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/10/2022] [Accepted: 11/29/2022] [Indexed: 06/18/2023]
Abstract
The KamLAND-Zen experiment has provided stringent constraints on the neutrinoless double-beta (0νββ) decay half-life in ^{136}Xe using a xenon-loaded liquid scintillator. We report an improved search using an upgraded detector with almost double the amount of xenon and an ultralow radioactivity container, corresponding to an exposure of 970 kg yr of ^{136}Xe. These new data provide valuable insight into backgrounds, especially from cosmic muon spallation of xenon, and have required the use of novel background rejection techniques. We obtain a lower limit for the 0νββ decay half-life of T_{1/2}^{0ν}>2.3×10^{26} yr at 90% C.L., corresponding to upper limits on the effective Majorana neutrino mass of 36-156 meV using commonly adopted nuclear matrix element calculations.
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Affiliation(s)
- S Abe
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Asami
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - M Eizuka
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Futagi
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - A Gando
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Gando
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - T Gima
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - A Goto
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - T Hachiya
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Hata
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Hayashida
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Hosokawa
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Ichimura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Ieki
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Ikeda
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Inoue
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - K Ishidoshiro
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Kamei
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - N Kawada
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Kishimoto
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M Koga
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - M Kurasawa
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - N Maemura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - T Mitsui
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Miyake
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - T Nakahata
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Nakamura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Nakamura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - R Nakamura
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Ozaki
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
- Graduate Program on Physics for the Universe, Tohoku University, Sendai 980-8578, Japan
| | - T Sakai
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Sambonsugi
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - I Shimizu
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - J Shirai
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Shiraishi
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - A Suzuki
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Suzuki
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - A Takeuchi
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Tamae
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - K Ueshima
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - H Watanabe
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - Y Yoshida
- Research Center for Neutrino Science, Tohoku University, Sendai 980-8578, Japan
| | - S Obara
- Frontier Research Institute for Interdisciplinary Sciences, Tohoku University, Sendai 980-8578, Japan
| | - A K Ichikawa
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
| | - D Chernyak
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - A Kozlov
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
| | - K Z Nakamura
- Kyoto University, Department of Physics, Kyoto 606-8502, Japan
| | - S Yoshida
- Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan
| | - Y Takemoto
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - S Umehara
- Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - K Fushimi
- Department of Physics, Tokushima University, Tokushima 770-8506, Japan
| | - K Kotera
- Graduate School of Integrated Arts and Sciences, Tokushima University, Tokushima 770-8502, Japan
| | - Y Urano
- Graduate School of Integrated Arts and Sciences, Tokushima University, Tokushima 770-8502, Japan
| | - B E Berger
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - B K Fujikawa
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
| | - J G Learned
- Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
| | - J Maricic
- Department of Physics and Astronomy, University of Hawaii at Manoa, Honolulu, Hawaii 96822, USA
| | - S N Axani
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - J Smolsky
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Z Fu
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - L A Winslow
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - Y Efremenko
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996, USA
| | - H J Karwowski
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA; Physics Departments at Duke University, Durham, North Carolina 27708, USA; North Carolina Central University, Durham, North Carolina 27707, USA; and The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - D M Markoff
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA; Physics Departments at Duke University, Durham, North Carolina 27708, USA; North Carolina Central University, Durham, North Carolina 27707, USA; and The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - W Tornow
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA; Physics Departments at Duke University, Durham, North Carolina 27708, USA; North Carolina Central University, Durham, North Carolina 27707, USA; and The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
| | - S Dell'Oro
- Center for Neutrino Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - T O'Donnell
- Center for Neutrino Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
| | - J A Detwiler
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Center for Experimental Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - S Enomoto
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Center for Experimental Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - M P Decowski
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo Institutes for Advanced Study, The University of Tokyo, Kashiwa, Chiba 277-8583, Japan
- Nikhef and the University of Amsterdam, Science Park, Amsterdam, Netherlands
| | - C Grant
- Boston University, Boston, Massachusetts 02215, USA
| | - A Li
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA; Physics Departments at Duke University, Durham, North Carolina 27708, USA; North Carolina Central University, Durham, North Carolina 27707, USA; and The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
- Boston University, Boston, Massachusetts 02215, USA
| | - H Song
- Boston University, Boston, Massachusetts 02215, USA
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Jin P, Gao Y, Fu Z, Yang W, Meng X. 105P Neoadjuvant tislelizumab combined with chemoradiotherapy for resectable locally advanced esophageal squamous cell carcinoma (ESCC): Single arm phase II study. Immuno-Oncology and Technology 2022. [DOI: 10.1016/j.iotech.2022.100209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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13
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Bai X, Fu Z, Sun Z, Xu R, Guo X, Tian Q, Dmytriw AA, Zhao H, Wang W, Wang X, Patel AB, Yang B, Jiao L. Thrombectomy Using the EmboTrap Clot-Retrieving Device for the Treatment of Acute Ischemic Stroke: A Glimpse of Clinical Evidence. AJNR Am J Neuroradiol 2022; 43:1736-1742. [PMID: 36456081 DOI: 10.3174/ajnr.a7708] [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: 06/21/2022] [Accepted: 10/11/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUND The EmboTrap Recanalization Device is a novel stent retriever for thrombectomy in the setting of acute ischemic stroke due to large-vessel occlusion. PURPOSE Our aim was to summarize the safety and efficacy of the EmboTrap Recanalization Device in acute ischemic stroke-large-vessel occlusion through a systematic review and meta-analysis. DATA SOURCES Medline, EMBASE, the Cochrane Library, Web of Science, and Google Scholar were searched up to April 2022. STUDY SELECTION Nine observational studies using the EmboTrap Recanalization Device were selected. DATA ANALYSIS We adapted effect size with 95% CIs for dichotomous data. P value <.05 was statistically significant. DATA SYNTHESIS The estimated rate of successful recanalization (modified TICI 2b-3) was 90% (95% CI, 86%-95%; I 2 = 82.4%); 90-day favorable outcome (mRS 0-2), 53% (95% CI, 42%-63%; I 2 = 88.6%); modified first-pass effect, 43% (95% CI, 35%-51%; I 2 = 63.7%); and first-pass effect, 36% (95% CI, 29%-46%; I 2 = 10.7%). The rate of any intracerebral hemorrhage was 19% (95% CI, 16%-22%; I 2 = 0.0%); symptomatic intracerebral hemorrhage, 5% (95% CI, 1%-8%; I 2 = 84.6%); and 90-day mortality, 14% (95% CI, 9%-19%; I 2 = 79.3%). Subgroup analysis showed higher rates of complete recanalization for EmboTrap II than for the EmboTrap System. LIMITATIONS The included studies are single-arm without direct comparison with other stent retrievers. Some of the studies recruited had a small sample size and were limited by the retrospective study design. In addition, the uncertain heterogeneity among studies was high. CONCLUSIONS The EmboTrap Recanalization Device is safe and efficient in treating acute ischemic stroke due to large-vessel occlusion.
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Affiliation(s)
- X Bai
- From the Departments of Neurosurgery (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.).,China International Neuroscience Institute (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.), Beijing, China
| | - Z Fu
- From the Departments of Neurosurgery (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.).,China International Neuroscience Institute (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.), Beijing, China
| | - Z Sun
- From the Departments of Neurosurgery (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.).,China International Neuroscience Institute (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.), Beijing, China
| | - R Xu
- From the Departments of Neurosurgery (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.).,China International Neuroscience Institute (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.), Beijing, China
| | - X Guo
- Department of Neurology (X.G.), Loma Linda University Health, Loma Linda, California
| | - Q Tian
- Beijing Key Laboratory of Clinical Epidemiology (Q.T.), School of Public Health, Capital Medical University, Beijing, China
| | - A A Dmytriw
- Neuroendovascular Program (A.A.D.), Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
| | - H Zhao
- From the Departments of Neurosurgery (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.).,China International Neuroscience Institute (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.), Beijing, China
| | - W Wang
- Library (W.W., X.W., A.B.P.)
| | - X Wang
- Library (W.W., X.W., A.B.P.)
| | | | - B Yang
- From the Departments of Neurosurgery (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.).,China International Neuroscience Institute (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.), Beijing, China
| | - L Jiao
- From the Departments of Neurosurgery (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.) .,Interventional Neuroradiology (L.J.), Xuanwu Hospital, Capital Medical University, Xicheng District, Beijing, China.,China International Neuroscience Institute (X.B., Z.F., Z.S., R.X., H.Z., B.Y., L.J.), Beijing, China
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Shi SY, Liu ZX, Zhao HY, Nie XL, Fu Z, Song HB, Yao C, Zhan SY, Sun F. [Real-world evidence and randomized controlled trials: the initiation, implementation, progress interpretation and revelation of RCT DUPLICATE (part 1)]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1828-1834. [PMID: 36444469 DOI: 10.3760/cma.j.cn112338-20220513-00408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In recent years, researchers, pharmaceutical companies, and political makers gradually using more real-world data (RWD) to produce real-world evidence (RWE) for policy-making. A research team of Harvard University launched the RCT DUPLICATE project in 2018, aiming to replicate 30 randomized controlled trials using the medical claims database in order to explore methods for quantifying the efficacy-effectiveness gap and explain its potential sources, to enhance the credibility of the RWE. This paper reviews the background of RCT DUPLICATE Initiative, highlights the research purposes, research design and implementation process of the RCT DUPLICATE Initiative, to help domestic scholars better understand the scope and application value of RWE.
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Affiliation(s)
- S Y Shi
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China China Institute of Rehabilitation Sciences, Center for Prevention and Control of Disability of China Disabled Persons Federation, Beijing 100068, China
| | - Z X Liu
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - H Y Zhao
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - X L Nie
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China Center for Clinical Epidemiology and Evidence-based Medicine, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Z Fu
- Hainan Institute of Real World Data, the Admonistration of Boao Lecheng International Medical Tourism Pilot Zone, Lecheng 571437, China
| | - H B Song
- Center for Drug Reevaluation, National Medical Products Administration, Beijing 100022, China Key Laboratory for Research and Evaluation of Pharmacovigilance, National Medical Products Administration, Beijing 100022, China
| | - C Yao
- Hainan Institute of Real World Data, the Admonistration of Boao Lecheng International Medical Tourism Pilot Zone, Lecheng 571437, China Peking University Clinical Research Institute, Beijing 100191, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China Clinical Epidemiology Research Center, Peking University Third Hospital, Beijing 100191, China
| | - F Sun
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China Hainan Institute of Real World Data, the Admonistration of Boao Lecheng International Medical Tourism Pilot Zone, Lecheng 571437, China
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Shi SY, Liu ZX, Zhao HY, Nie XL, Han S, Fu Z, Song HB, Yao C, Zhan SY, Sun F. [Real-world evidence and randomized controlled trials: the initiation, implementation, progress interpretation and revelation of RCT DUPLICATE (part 2)]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1835-1841. [PMID: 36444470 DOI: 10.3760/cma.j.cn112338-20220513-00409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
With the promotion and application of big medical data, non-interventional real-world evidence (RWE) has been used by regulators to assess the effectiveness of medical products. This paper briefly introduces the latest progress and research results of the RCT DUPLICATE Initiative launched by the research team of Harvard University in 2018 and summarizes relevant research experience based on the characteristics of China's medical service to provide inspiration and reference for domestic scholars to conduct related RWE research in the future.
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Affiliation(s)
- S Y Shi
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China China Institute of Rehabilitation Sciences, Center for Prevention and Control of Disability of China Disabled Persons Federation, Beijing 100068, China
| | - Z X Liu
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - H Y Zhao
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China
| | - X L Nie
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China Center for Clinical Epidemiology and Evidence-based Medicine, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - S Han
- Department of Pharmacy Management and Clinical Pharmacy, Peking University School of Pharmacy, Beijing 100191, China
| | - Z Fu
- Hainan Institute of Real World Data, the Admonistration of Boao Lecheng International Medical Tourism Pilot Zone, Lecheng 571437, China
| | - H B Song
- Center for Drug Reevaluation, National Medical Products Administration, Beijing 100022, China Key Laboratory for Research and Evaluation of Pharmacovigilance, National Medical Products Administration, Beijing 100022, China
| | - C Yao
- Hainan Institute of Real World Data, the Admonistration of Boao Lecheng International Medical Tourism Pilot Zone, Lecheng 571437, China Peking University Clinical Research Institute, Beijing 100191, China
| | - S Y Zhan
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China Clinical Epidemiology Research Center, Peking University Third Hospital, Beijing 100191, China
| | - F Sun
- Department of Epidemiology and Biostatistics, Peking University School of Public Health, Beijing 100191, China Hainan Institute of Real World Data, the Admonistration of Boao Lecheng International Medical Tourism Pilot Zone, Lecheng 571437, China
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Chai MY, Kou BX, Fu Z, Wei FL, Dou SS, Chen DX, Liu XN. [Sorafenib regulates vascular endothelial growth factor by runt-related transcription factor-3 to inhibit angiogenesis in hepatocellular carcinoma]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:770-776. [PMID: 36038349 DOI: 10.3760/cma.j.cn501113-20201221-00670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the molecular mechanism of sorafenib against hepatocellular carcinoma. Methods: Sorafenib efficacy was screened and verified by the hepatocellular carcinoma patient-derived tumor xenograft (PDX) model. Veterinary B-mode ultrasonography and in vivo confocal laser scanning microscopy were used to observe PDX angiogenesis. Immunohistochemistry was used to observe the expression of proliferation and angiogenesis-related proteins in PDX tissue. Real-time quantitative PCR technology was used to observe the RUNX3 gene in PDX tissues. SPSS 17.0 statistical software was used for statistical analysis. Results: Four cases of PDX were used to screen the efficacy of sorafenib. PDX1 had a significant response to sorafenib, with an inhibition rate of 68.07%. Compared with the control group, sorafenib had significantly inhibited PDX1 relative tumor volume (5.76±2.14 vs. 11.71±2.87, P<0.05). Cell division index (39.50±7.72 vs. 67.10±9.14, P<0.05) and Ki67 expression (288.6±43.40 vs. 531.70±55.60, P<0.05) were significantly decreased. Veterinary B-mode ultrasonography showed evident blood flow signals in PDX1 tumors. In vivo confocal laser scanning microscopy results showed that sorafenib had significantly reduced the total vessel length (1573.00±236.21 vs. 2675.03±162.00, P<0.05) and area (11 145.33±1931.97 vs. 20 105.37±885.93, P<0.05)) of PDX1 tumors. Immunohistochemical results showed that sorafenib had significantly down-regulated the protein expressions of CD34 (27.55±3.76 vs. 45.47±5.57, P<0.05), VEGF (16.33±2.86 vs. 22.77±3.20, P<0.05) and MVD (38.75±6.01 vs. 55.50±8.61, P<0.05). Real-time PCR results showed that sorafenib had significantly up-regulated RUNX3 gene expression (2.14±0.71 vs. 1.00±0.36, P<0.05). However, there was a negative correlation between the expression of RUNX3 gene and the ratio of VEGF-positive cells in sorafenib group (R2=0.509 7). Conclusion: Sorafenib may inhibit the PDX angiogenesis and the growth of hepatocellular carcinoma by regulating the RUNX3-VEGF pathway.
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Affiliation(s)
- M Y Chai
- Beijing You'an Hospital,Capital Medical University, Beijing 100069, China Beijing Institute of Hepatology, Beijing 100069, China
| | - B X Kou
- Beijing You'an Hospital,Capital Medical University, Beijing 100069, China Beijing Institute of Hepatology, Beijing 100069, China
| | - Z Fu
- Beijing You'an Hospital,Capital Medical University, Beijing 100069, China
| | - F L Wei
- Beijing You'an Hospital,Capital Medical University, Beijing 100069, China Beijing Institute of Hepatology, Beijing 100069, China
| | - S S Dou
- Beijing You'an Hospital,Capital Medical University, Beijing 100069, China Beijing Institute of Hepatology, Beijing 100069, China
| | - D X Chen
- Beijing You'an Hospital,Capital Medical University, Beijing 100069, China Beijing Institute of Hepatology, Beijing 100069, China
| | - X N Liu
- Beijing You'an Hospital,Capital Medical University, Beijing 100069, China Beijing Institute of Hepatology, Beijing 100069, China
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Abstract
Proteases are stored in very large amounts within abundant cytoplasmic granules of mast cells (MCs), and in lower amounts in basophils. These proteases are stored in their active form in complex with negatively charged proteoglycans, such as heparin and chondroitin sulfate, ready for rapid release upon MC and basophil activation. The absolute majority of these proteases belong to the large family of chymotrypsin related serine proteases. Three such enzymes are found in human MCs, a chymotryptic enzyme, the chymase, a tryptic enzyme, the tryptase and cathepsin G. Cathepsin G has in primates both chymase and tryptase activity. MCs also express a MC specific exopeptidase, carboxypeptidase A3 (CPA3). The targets and thereby the functions of these enzymes have for many years been the major question of the field. However, the fact that some of these enzymes have a relatively broad specificity has made it difficult to obtain reliable information about the biologically most important targets for these enzymes. Under optimal conditions they may cleave a relatively large number of potential targets. Three of these enzymes, the chymase, the tryptase and CPA3, have been shown to inactivate several venoms from snakes, scorpions, bees and Gila monster. The chymase has also been shown to cleave several connective tissue components and thereby to be an important player in connective tissue homeostasis. This enzyme can also generate angiotensin II (Ang II) by cleavage of Ang I and have thereby a role in blood pressure regulation. It also display anticoagulant activity by cleaving fibrinogen and thrombin. A regulatory function on excessive TH2 immunity has also been observed for both the chymase and the tryptase by cleavage of a highly selective set of cytokines and chemokines. The chymase also appear to have a protective role against ectoparasites such as ticks, mosquitos and leeches by the cleavage of their anticoagulant proteins. We here review the data that has accumulated concerning the potential in vivo functions of these enzymes and we discuss how this information sheds new light on the role of MCs and basophils in health and disease.
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Affiliation(s)
- Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Uppsala, Sweden
- *Correspondence: Lars Hellman,
| | - Srinivas Akula
- Department of Anatomy, Physiology, and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Uppsala, Sweden
| | - Sara Wernersson
- Department of Anatomy, Physiology, and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
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Jiang X, Hu H, Fu Z, Su Y, Long J. ASSOCIATION BETWEEN THE CTLA-4 EXON 1+49A/G POLYMORPHISM AND THE RELAPSE OF GRAVE'S DISEASE AFTER ATD WITHDRAWAL: A META-ANALYSIS. Acta Endocrinol (Buchar) 2022; 18:324-332. [PMID: 36699166 PMCID: PMC9867805 DOI: 10.4183/aeb.2022.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Background The cytotoxic T lymphocyte-associated molecules-4 (CTLA-4) is related to the relapse of Graves' disease (GD) after anti-thyroid drugs (ATDs) withdrawal. We performed a meta-analysis to generate large-scale evidence on whether the CTLA-4 exon 1+49A/G polymorphism can predict the relapse of GD after ATDs withdrawal. Methods and Results The PubMed, EMBASE,the Cochrane Library and reference lists of relevant studies were searched to identify eligible studies from inception to Jan, 2021. Ten eligible studies consisting of 1450 GD patients with a total of 848 relapsed patients were included in the meta-analysis.In Caucasians patients, the CTLA-4 exon 1+49A/G polymorphism significantly elevated the relapse risk of GD in additive (OR = 2.07, 95% CI: 1.18-3.62, P=0.011), dominant (OR = 2.52, 95% CI: 1.17-5.41, P=0.02), homozygote model(OR = 3.264, 95% CI: 1.25-8.52, P=0.016), except recessive (OR = 2.18, 95% CI = 0.98-4.86, P = 0.062) and heterozygote model (OR = 2.141, 95% CI = 0.958-4.786, P = 0.064). In Asian subgroup, none of these genotypes show any associations with the relapse of GD after ATDs withdrawal. Conclusion This meta-analysis suggests that the CTLA-4 exon1 +49A/G polymorphism is associated with the relapse risk of GD after ATDs withdrawal in Caucasians, not Asians. Compared with the AA genotype, Caucasian patients with GG genotype have 3.264 times risk of relapse. A more aggressive treatment such as radioactive iodine or thyroidectomy, or longer periods treatment of ATDs should be recommended in Caucasian patients with the GG genotype.
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Affiliation(s)
- X. Jiang
- The Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - H. Hu
- The Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Z. Fu
- The Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Y. Su
- The Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - J. Long
- The Second Affiliated Hospital, Army Medical University, Chongqing, China
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Li R, Zhu X, Liu S, Zhang X, Xie C, Fu Z, Huang A, Sun L, Liu D, Zhao J, Wu L, Qin Z, Li S, Liu Y, Li Z. LB0005 ORELABRUTINIB, AN IRREVERSIBLE INHIBITOR OF BRUTON’S TYROSINE KINASE (BTK), FOR THE TREATMENT OF SYSTEMIC LUPUS ERYTHEMATOSUS (SLE): RESULTS OF A RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED, PHASE IB/IIA DOSE-FINDING STUDY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.5086a] [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
BackgroundOrelabrutinib is an oral, highly-selective, irreversible inhibitor of Bruton’s tyrosine kinase (BTK). Orelabrutinib has been approved for the treatment of B cell malignancies in China. Two distinct lupus animal models showed significant efficacy of orelabrutinib in reducing disease activity, which supported the clinical development of orelabrutinib in Systemic Lupus Erythematosus (SLE).ObjectivesThis phase Ib/IIa, randomized, double-blind, placebo-controlled, dose-finding study aimed to evaluate the safety, tolerability, pharmacokinetics (PK), pharmacodynamics (PD), preliminary efficacy and biomarkers of orelabrutinib in patients with mild to moderate SLE who received standard of care (SoC) therapy.MethodsPatients diagnosed with SLE by the ACR classification criteria for ≥ 6 months, who had a SLEDAI-2K score ≥5 at screening, and were autoantibody-positive, were randomized 1:1:1:1 to receive oral orelabrutinib at 50mg, 80mg, 100mg or placebo once daily for 12 weeks, respectively.ResultsThis study randomized 60 patients with 55 patients who completed 12-week treatment. Age at baseline was 33.7±9.8 years and 96.7% were female. Baseline disease characteristics were generally balanced across treatment groups. Adverse events (AEs) were reported in 80%, 93.3% and 100% of orelabrutinib treated patients at doses of 50mg, 80mg and 100mg QD respectively versus 85.5% in placebo group. AEs were mostly mild or moderate. Treatment-related SAEs were reported in 3 patients treated with orelabrutinib, only 1 of which was grade 3. No deaths were reported. The plasma exposure of orelabrutinib (AUC and Cmax) was proportionally increased with doses. Nearly complete BTK occupancy was achieved at all dose levels, and the occupancy lasted for 24 hours without any decrease compared to that at 4 hour post-dosing. In all evaluable patients, the SLE Response Index (SRI)-4 response rates at week 12 were 50.0%, 61.5% and 64.3% in patients treated with orelabrutinib at 50mg (n=14), 80mg (n=13) and 100mg (n=14) respectively, compared with 35.7% in patients treated with placebo (n=14), which indicated the trend of dose-dependent improvement. Among the subgroup of patients with SLEDAI-2K≥8 at screening, SRI-4 response occurred in 70%, 70% and 66.7% of patients treated with orelabrutinib at 50mg (n=10), 80mg (n=10) and 100mg (n=9), respectively, compared with 30% who received placebo (n=10). Trends of reduced proteinuria, anti-dsDNA and IgG, total B cells and increased complements C4 were also observed following orelabrutinib treatment.ConclusionOrelabrutinib was generally safe and well tolerated in patients with SLE. Preliminary results also suggested encouraging efficacy which supports further development of orelabrutinib in larger and longer trials for SLE.Table 1.Efficacy results at week 12.All Evaluable PatientsPlaceboOrelabrutinibOrelabrutinibOrelabrutinib50 mg80 mg100 mgN=5514141314SRI-4 response, n (%)5 (35.7%)7 (50.0%)8 (61.5%)9 (64.3%)Treatment difference vs. PBO (%)14.3%25.8%28.6%SLEDAI-2K≥8, N=391010109SRI-4 response, n (%)3 (30.0%)7 (70.0%)7 (70.0%)6 (66.7%)Treatment difference vs. PBO (%)40.0%40.0%36.7%Note: All evaluable patients at week 12 efficacy data were included in the efficacy analysis.Figure 1.SRI-4 response rates at week 12.Disclosure of InterestsRu Li: None declared, Xiaoxia Zhu: None declared, Shengyun Liu: None declared, Xiao Zhang: None declared, Changhao Xie: None declared, Zili Fu: None declared, Anbin Huang: None declared, Lingyun Sun: None declared, Dongzhou Liu: None declared, Jinxia Zhao: None declared, Lin Wu: None declared, Zhoushuai Qin Employee of: InnoCare Pharma Limited., Sichen Li Employee of: InnoCare pharma Limited., Yaorong Liu Employee of: InnoCare pharma Limited., Zhanguo Li: None declared
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Iraji A, Faghiri A, Fu Z, Kochunov P, Adhikari BM, Belger A, Ford JM, McEwen S, Mathalon DH, Pearlson GD, Potkin SG, Preda A, Turner JA, Van Erp TGM, Chang C, Calhoun VD. Moving beyond the 'CAP' of the Iceberg: Intrinsic connectivity networks in fMRI are continuously engaging and overlapping. Neuroimage 2022; 251:119013. [PMID: 35189361 PMCID: PMC9107614 DOI: 10.1016/j.neuroimage.2022.119013] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 02/11/2022] [Accepted: 02/17/2022] [Indexed: 11/05/2022] Open
Abstract
Resting-state functional magnetic resonance imaging is currently the mainstay of functional neuroimaging and has allowed researchers to identify intrinsic connectivity networks (aka functional networks) at different spatial scales. However, little is known about the temporal profiles of these networks and whether it is best to model them as continuous phenomena in both space and time or, rather, as a set of temporally discrete events. Both categories have been supported by series of studies with promising findings. However, a critical question is whether focusing only on time points presumed to contain isolated neural events and disregarding the rest of the data is missing important information, potentially leading to misleading conclusions. In this work, we argue that brain networks identified within the spontaneous blood oxygenation level-dependent (BOLD) signal are not limited to temporally sparse burst moments and that these event present time points (EPTs) contain valuable but incomplete information about the underlying functional patterns. We focus on the default mode and show evidence that is consistent with its continuous presence in the BOLD signal, including during the event absent time points (EATs), i.e., time points that exhibit minimum activity and are the least likely to contain an event. Moreover, our findings suggest that EPTs may not contain all the available information about their corresponding networks. We observe distinct default mode connectivity patterns obtained from all time points (AllTPs), EPTs, and EATs. We show evidence of robust relationships with schizophrenia symptoms that are both common and unique to each of the sets of time points (AllTPs, EPTs, EATs), likely related to transient patterns of connectivity. Together, these findings indicate the importance of leveraging the full temporal data in functional studies, including those using event-detection approaches.
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Affiliation(s)
- A Iraji
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State University, Georgia Institute of Technology, and Emory University, Atlanta, GA, United States of America.
| | - A Faghiri
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State University, Georgia Institute of Technology, and Emory University, Atlanta, GA, United States of America
| | - Z Fu
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State University, Georgia Institute of Technology, and Emory University, Atlanta, GA, United States of America
| | - P Kochunov
- Maryland Psychiatric Research Center, Department of Psychiatry, School of Medicine, University of Maryland, Baltimore, MD, United States of America
| | - B M Adhikari
- Maryland Psychiatric Research Center, Department of Psychiatry, School of Medicine, University of Maryland, Baltimore, MD, United States of America
| | - A Belger
- Department of Psychiatry, University of North Carolina, Chapel Hill, NC, United States of America
| | - J M Ford
- Department of Psychiatry, University of California San Francisco, San Francisco, CA, United States of America; San Francisco VA Medical Center, San Francisco, CA, United States of America
| | - S McEwen
- Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, CA, United States of America
| | - D H Mathalon
- Department of Psychiatry, University of California San Francisco, San Francisco, CA, United States of America; San Francisco VA Medical Center, San Francisco, CA, United States of America
| | - G D Pearlson
- Departments of Psychiatry and Neuroscience, Yale University, School of Medicine, New Haven, CT, United States of America
| | - S G Potkin
- Department of Psychiatry and Human Behavior, University of California Irvine, Irvine, CA, United States of America
| | - A Preda
- Department of Psychiatry and Human Behavior, University of California Irvine, Irvine, CA, United States of America
| | - J A Turner
- Department of Psychology, Georgia State University, Atlanta, GA, United States of America
| | - T G M Van Erp
- Clinical Translational Neuroscience Laboratory, Department of Psychiatry and Human Behavior, University of California Irvine, Irvine, CA, United States of America
| | - C Chang
- Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, TN, United States of America
| | - V D Calhoun
- Tri-Institutional Center for Translational Research in Neuroimaging and Data Science (TReNDS), Georgia State University, Georgia Institute of Technology, and Emory University, Atlanta, GA, United States of America.
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Liu HM, Fu Z, Zhang XB, Zhang HL, Bao YX, Wu XD, Shang YX, Zhao DY, Zhao SY, Zhang JH, Chen ZM, Liu EM, Deng L, Liu CH, Xiang L, Cao L, Zou YX, Xu BP, Dong XY, Yin Y, Hao CL, Hong JG. [Expert consensus on rational usage of nebulization treatment on childhood respiratory system diseases]. Zhonghua Er Ke Za Zhi 2022; 60:283-290. [PMID: 35385931 DOI: 10.3760/cma.j.cn112140-20220118-00059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- H M Liu
- Department of Pediatric Pulmonology and Immunology, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | - Z Fu
- Department of Respiratory, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - X B Zhang
- Department of Respiratory Disease, Children's Hospital of Fudan University, Shanghai 201102, China
| | - H L Zhang
- Department of Pediatric Respiratory Medicine, the Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Y X Bao
- Tongxing Children's Clinic, Shanghai 200433, China
| | - X D Wu
- Department of Respiratory,Xiamen Children's Hospital (Children's Hospital of Fudan University at Xiamen), Xiamen 361006, China
| | - Y X Shang
- Department of Pediatric Pulmonology, Shengjing Hospital of China Medical University, Shenyang 110136, China
| | - D Y Zhao
- Department of Respiratory Medicine, Children's Hospital of Nanjing Medical University, Nanjing 210008, China
| | - S Y Zhao
- Department No.2 of Respiratory Medicine, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - J H Zhang
- Department of Pediatric Respiratory, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Z M Chen
- Department of Pulmonology, the Children's Hospital, Zhejiang University School of Medicine, Hangzhou 310052, China
| | - E M Liu
- Department of Respiratory, Children's Hospital of Chongqing Medical University, Chongqing 400014, China
| | - L Deng
- Department of Respiratory,Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - C H Liu
- Department of Allergy,Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - L Xiang
- Department of Allergic Medicine, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - L Cao
- Department of Allergy,Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - Y X Zou
- Department of Respiratory, Tianjin Children's Hospital, Tianjin 300134, China
| | - B P Xu
- Department of Respiratory Medicine, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China
| | - X Y Dong
- Department of Pulmonology, Shanghai Children's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200062, China
| | - Y Yin
- Department of Respiratory Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200062, China
| | - C L Hao
- Department of Respiratory,Children's Hospital of Soochow University, Suzhou 215002, China
| | - J G Hong
- Department of Pediatrics, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, China
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Fu Z, Akula S, Olsson AK, Hellman L. Chicken cathepsin G-like - A highly specific serine protease with a peculiar tryptase specificity expressed by chicken thrombocytes. Dev Comp Immunol 2022; 129:104337. [PMID: 34919980 DOI: 10.1016/j.dci.2021.104337] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Serine proteases are major granule constituents of cells from several mammalian hematopoietic cell lineages. Despite the relatively extensive knowledge about these mammalian proteases, very little is known about their bird, reptile and amphibian homologs. In order to close this gap in our understanding of the evolution of these proteases, we have characterized the extended cleavage specificity and hematopoietic expression pattern of the chicken serine protease cathepsin G-like. This protease, which clusters in a separate subfamily of serine proteases among the vertebrate hematopoietic serine proteases, has been characterized using substrate phage display and further validated by using a panel of recombinant substrates. A preference for a lysine in the P1 position of a substrate, arginines in positions P2 and P3, and the aromatic amino acid tryptophane in the P4 position was observed. Based on the sequence alignment we could identify a consensus sequence for this protease as being PGGWRRK↓ALSV. Mass spectrometry analysis of a peptide with the consensus sequence obtained by phage display showed that cleavage of this peptide occurred after the conserved Lys (K) residue. A screening of potential in vivo substrates based on the derived P5-P3' consensus sequence resulted in a relatively limited number of potential substrates, due to the high selectivity of this enzyme. The most interesting of these were PDGF-A, coagulation factor V and low-density lipoprotein receptor like-8. Immunohistochemical analysis of chicken white blood cells with antisera produced against chicken cathepsin G-like and chicken egg lysozyme, as a reference protein known to be expressed by hematopoietic cells, showed presence of chicken cathepsin G-like almost exclusively in thrombocytes whereas lysozyme was found at very high amounts in heterophils, and lower amounts in monocytes and thrombocytes.
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Affiliation(s)
- Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden
| | - Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden
| | - Anna-Karin Olsson
- Department of Medical Biochemistry and Microbiology, BMC, Box 589, SE-751 23, Uppsala, Sweden
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden.
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Jie YC, Jiang YW, Liang KJ, Zhou XO, Zhang CT, Fu Z, Zhao YH. [Mechanical circulatory support combined with immunomodulation treatment for patients with fulminant myocarditis: a single-center real-world study]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:277-281. [PMID: 35340147 DOI: 10.3760/cma.j.cn112148-20210519-00432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the relationship between the mechanical circulatory support (MCS) combined with immunomodulation and the prognosis of patients with fulminant myocarditis. Methods: This is a retrospective study. A total of 88 patients with fulminant myocarditis admitted to Dongguan Kanghua hospital from Aug. 2008 to Dec. 2020 were included. Medical histories, results of laboratory tests, treatment regimens and clinical outcomes of these patients during their hospitalization were collected from the medical record system. According to the treatment methods, the patients were divided into MCS+immunomodulation group (38 cases), MCS group (20 cases) and traditional treatment group (30 cases). Patients in the MCS+immunomodulation group received intra-aortic balloon pump (IABP) or IABP combined with extracorporeal membrane oxygenation (ECMO) and immunoglobulin or glucocorticoid. Patients in the MCS group only received mechanical circulatory support. Patients in the traditional treatment group received neither mechanical circulatory support nor immunomodulatory therapy, and only used vasoactive drugs and cardiotonic drugs. The in-hospital mortality and length of stay were compared among the three groups. Results: A total of 88 patients with fulminant myocarditis aged (35.0±10.8) years were included, and there were 46 males (52.3%). The mortality of MCS+immunomodulation group (7.9% (3/38) vs. 56.7% (17/30), P=0.001 2) and MCS group (30.0% (6/20) vs. 56.7% (17/30), P=0.002 8) were lower than that of traditional treatment group. Compared with the MCS group, the in-hospital mortality in the MCS+immunomodulation group was lower (P=0.005 4). The most common cause of death was multiple organ dysfunction syndrome (MODS). The constituent ratios of death in MCS+immunomodulation group, MCS group and traditional treatment group were 3/3, 4/6 and 12/17, respectively. The incidence of MODS in the MCS group (20% (4/20)) and the traditional treatment group (40% (12/30)) was significantly higher than that in the MCS+immunomodulation group (7.9% (3/38)) (both P<0.01). In discharged patients, the hospitalization time of MCS+immunomodulation group was shorter than that of traditional treatment group ((13.4±5.5)d vs. (18.5±7.4)d, P<0.05) and MCS group ((13.4±5.5)d vs. (16.9±8.5)d, P<0.05). Conclusion: MCS combined with immunomodulatory therapy is associated with lower in-hospital mortality and shorter hospital stay in patients with fulminant myocarditis.
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Affiliation(s)
- Y C Jie
- Cardiovascular Intensive Care Unit, Dongguan Kanghua Hospital, Dongguan 523000, China
| | - Y W Jiang
- Cardiovascular Intensive Care Unit, Dongguan Kanghua Hospital, Dongguan 523000, China
| | - K J Liang
- Cardiovascular Intensive Care Unit, Dongguan Kanghua Hospital, Dongguan 523000, China
| | - X O Zhou
- Cardiovascular Intensive Care Unit, Dongguan Kanghua Hospital, Dongguan 523000, China
| | - C T Zhang
- Cardiovascular Intensive Care Unit, Dongguan Kanghua Hospital, Dongguan 523000, China
| | - Z Fu
- Cardiovascular Intensive Care Unit, Dongguan Kanghua Hospital, Dongguan 523000, China
| | - Y H Zhao
- Cardiovascular Intensive Care Unit, Dongguan Kanghua Hospital, Dongguan 523000, China
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Ryu J, Fu Z, Akula S, Olsson AK, Hellman L. Extended cleavage specificity of a Chinese alligator granzyme B homologue, a strict Glu-ase in contrast to the mammalian Asp-ases. Dev Comp Immunol 2022; 128:104324. [PMID: 34826501 DOI: 10.1016/j.dci.2021.104324] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/15/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
Granzyme B (GzmB) is primarily expressed by mammalian cytotoxic T cells and serves as one of the key components in the defense against viral infection by the induction of apoptosis in virus infected cells. By direct cell to cell contact and delivery into target cells by perforin, cytotoxic T cells activate apoptosis through the action of GzmB by both caspase-dependent and -independent pathways. In search for early ancestors of GzmB we have in the current study identified and characterized a GzmB homologue from a reptile, the Chinese alligator. This enzyme is encoded from the same locus as the mammalian counterparts, the chymase locus. Phage display analysis of the cleavage specificity of the recombinant alligator enzyme (named MCP1A-like) shows that it is a relatively strict Glu-ase, with strong preference for glutamic acid in the P1 position of a substrate. The majority of mammalian GzmB:s are, in marked contrast to the alligator enzyme, relatively strict Asp-ases. The alligator enzyme also showed strong preference for Ala, Pro and Gly in the P2 position and Val in the P3 position indicating that it has a narrow specificity, similar to the mammalian counterparts. Analysis of the three amino acids forming the substrate binding pocket (S1 pocket) in three amphibian homologues to MCP1A-like, from the frogs Xenopus laevis and Xenopus tropicalis, shows that these amphibian enzymes have similar substrate binding pocket as their mammalian counterparts. This finding, together with the apparent lack of GzmB homologs in fish, indicates that the ancestor of GzmB did appear with the amphibians at the base of tetrapod evolution. This study is a first step in a larger effort to understand the evolutionary processes involved in shaping anti-viral immunity in non-mammalian vertebrates.
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Affiliation(s)
- Jinhye Ryu
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, SE-751 24, Uppsala, Sweden
| | - Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, SE-751 24, Uppsala, Sweden
| | - Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, SE-751 24, Uppsala, Sweden
| | - Anna-Karin Olsson
- Department of Medical Biochemistry and Microbiology, BMC, Box 589, SE-751 23, Uppsala, Sweden
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, SE-751 24, Uppsala, Sweden.
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Paivandy A, Akula S, Lara S, Fu Z, Olsson AK, Kleinau S, Pejler G, Hellman L. Quantitative In-Depth Transcriptome Analysis Implicates Peritoneal Macrophages as Important Players in the Complement and Coagulation Systems. Int J Mol Sci 2022; 23:ijms23031185. [PMID: 35163105 PMCID: PMC8835655 DOI: 10.3390/ijms23031185] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2021] [Revised: 01/17/2022] [Accepted: 01/18/2022] [Indexed: 02/05/2023] Open
Abstract
To obtain a more detailed picture of macrophage (MΦ) biology, in the current study, we analyzed the transcriptome of mouse peritoneal MΦs by RNA-seq and PCR-based transcriptomics. The results show that peritoneal MΦs, based on mRNA content, under non-inflammatory conditions produce large amounts of a number of antimicrobial proteins such as lysozyme and several complement components. They were also found to be potent producers of several chemokines, including platelet factor 4 (PF4), Ccl6, Ccl9, Cxcl13, and Ccl24, and to express high levels of both TGF-β1 and TGF-β2. The liver is considered to be the main producer of most complement and coagulation components. However, we can now show that MΦs are also important sources of such compounds including C1qA, C1qB, C1qC, properdin, C4a, factor H, ficolin, and coagulation factor FV. In addition, FX, FVII, and complement factor B were expressed by the MΦs, altogether indicating that MΦs are important local players in both the complement and coagulation systems. For comparison, we analyzed human peripheral blood monocytes. We show that the human monocytes shared many characteristics with the mouse peritoneal MΦs but that there were also many major differences. Similar to the mouse peritoneal MΦs, the most highly expressed transcript in the monocytes was lysozyme, and high levels of both properdin and ficolin were observed. However, with regard to connective tissue components, such as fibronectin, lubricin, syndecan 3, and extracellular matrix protein 1, which were highly expressed by the peritoneal MΦs, the monocytes almost totally lacked transcripts. In contrast, monocytes expressed high levels of MHC Class II, whereas the peritoneal MΦs showed very low levels of these antigen-presenting molecules. Altogether, the present study provides a novel view of the phenotype of the major MΦ subpopulation in the mouse peritoneum and the large peritoneal MΦs and places the transcriptome profile of the peritoneal MΦs in a broader context, including a comparison of the peritoneal MΦ transcriptome with that of human peripheral blood monocytes and the liver.
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Affiliation(s)
- Aida Paivandy
- Department of Medical Biochemistry and Microbiology, Uppsala University, The Biomedical Center, SE-751 23 Uppsala, Sweden; (A.P.); (A.-K.O.); (G.P.)
| | - Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, SE-751 24 Uppsala, Sweden; (S.A.); (S.L.); (Z.F.); (S.K.)
| | - Sandra Lara
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, SE-751 24 Uppsala, Sweden; (S.A.); (S.L.); (Z.F.); (S.K.)
| | - Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, SE-751 24 Uppsala, Sweden; (S.A.); (S.L.); (Z.F.); (S.K.)
| | - Anna-Karin Olsson
- Department of Medical Biochemistry and Microbiology, Uppsala University, The Biomedical Center, SE-751 23 Uppsala, Sweden; (A.P.); (A.-K.O.); (G.P.)
| | - Sandra Kleinau
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, SE-751 24 Uppsala, Sweden; (S.A.); (S.L.); (Z.F.); (S.K.)
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Uppsala University, The Biomedical Center, SE-751 23 Uppsala, Sweden; (A.P.); (A.-K.O.); (G.P.)
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, SE-751 24 Uppsala, Sweden; (S.A.); (S.L.); (Z.F.); (S.K.)
- Correspondence: ; Tel.: +46-(0)18-471-4532; Fax: +46-(0)18-471-4862
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Yang J, Wang W, Luo Y, Huang S, Fu Z. Effect of pathological complete response after neoadjuvant chemoradiotherapy on postoperative complications of rectal cancer: a systematic review and meta-analysis. Tech Coloproctol 2022; 26:163-174. [PMID: 35048217 DOI: 10.1007/s10151-021-02564-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 12/05/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Standard total mesorectal resection has become an important treatment option for locally advanced or high-risk rectal cancer after neoadjuvant chemo-radiotherapy. 15-27% of patients can achieve pathological complete response (PCR) after neoadjuvant chemo-radiotherapy (nCRT). However, the relationship between PCR and postoperative complications remains an important unsolved problem. The objective of this study was to determine whether PCR was associated with the rate of postoperative complications. METHODS This meta-analysis was implemented following the recommendations from Preferred Reporting Items for Systematic Reviews and Meta-Analyses. We searched electronic literature by PubMed, EMBASE, and Google Scholar. Major outcomes of interest included anastomotic leakage, surgical-site infection, reoperation, and any postoperative complications. Other outcomes comprised postoperative hemorrhage, ileus, and mortality. RESULTS Eleven thousand two hundred ninety patients in 9 studies were included in the meta-analysis. The pooled analysis revealed that patients with PCR did not have a higher risk of anastomotic leakage (OR = 1.22, 95% CI 0.92-1.62, p = 0.17), reoperation (OR = 1.13, 95% CI 0.93-1.37, p = 0.22), and any postoperative complications (OR = 1.02, 95% CI 0.91-1.15, p = 0.72) than patients with non-PCR. However, the meta-analysis showed that the PCR group was superior to the non-PCR group in terms of surgical-site infection (9.38% vs. 12.44%OR = 0.68, 95% CI 0.47-0.98; p = 0.04). CONCLUSION PCR might not be related to the occurrence of postoperative complications in rectal cancer patients following nCRT. In addition, PCR might be associated with a lower risk of surgical-site infection.
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Affiliation(s)
- J Yang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - W Wang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Y Luo
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - S Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Z Fu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Fu Z, Akula S, Olsson AK, Kervinen J, Hellman L. Mast Cells and Basophils in the Defense against Ectoparasites: Efficient Degradation of Parasite Anticoagulants by the Connective Tissue Mast Cell Chymases. Int J Mol Sci 2021; 22:ijms222312627. [PMID: 34884431 PMCID: PMC8657707 DOI: 10.3390/ijms222312627] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/08/2021] [Accepted: 11/22/2021] [Indexed: 11/16/2022] Open
Abstract
Ticks, lice, flees, mosquitos, leeches and vampire bats need to prevent the host's blood coagulation during their feeding process. This is primarily achieved by injecting potent anticoagulant proteins. Basophils frequently accumulate at the site of tick feeding. However, this occurs only after the second encounter with the parasite involving an adaptive immune response and IgE. To study the potential role of basophils and mast cells in the defense against ticks and other ectoparasites, we produced anticoagulant proteins from three blood-feeding animals; tick, mosquito, and leech. We tested these anticoagulant proteins for their sensitivity to inactivation by a panel of hematopoietic serine proteases. The majority of the connective tissue mast cell proteases tested, originating from humans, dogs, rats, hamsters, and opossums, efficiently cleaved these anticoagulant proteins. Interestingly, the mucosal mast cell proteases that contain closely similar cleavage specificity, had little effect on these anticoagulant proteins. Ticks have been shown to produce serpins, serine protease inhibitors, upon a blood meal that efficiently inhibit the human mast cell chymase and cathepsin G, indicating that ticks have developed a strategy to inactivate these proteases. We show here that one of these tick serpins (IRS-2) shows broad activity against the majority of the mast cell chymotryptic enzymes and the neutrophil proteases from human to opossum. However, it had no effect on the mast cell tryptases or the basophil specific protease mMCP-8. The production of anticoagulants, proteases and anti-proteases by the parasite and the host presents a fascinating example of an arms race between the blood-feeding animals and the mammalian immune system with an apparent and potent role of the connective tissue mast cell chymases in the host defense.
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Affiliation(s)
- Zhirong Fu
- The Biomedical Center, Department of Cell and Molecular Biology, Uppsala University, SE-751 24 Uppsala, Sweden; (Z.F.); (S.A.)
| | - Srinivas Akula
- The Biomedical Center, Department of Cell and Molecular Biology, Uppsala University, SE-751 24 Uppsala, Sweden; (Z.F.); (S.A.)
| | - Anna-Karin Olsson
- Department of Medical Biochemistry and Microbiology, BMC, SE-751 23 Uppsala, Sweden;
| | - Jukka Kervinen
- Tosoh Bioscience LLC., 3604 Horizon Drive, King of Prussia, PA 19406, USA;
| | - Lars Hellman
- The Biomedical Center, Department of Cell and Molecular Biology, Uppsala University, SE-751 24 Uppsala, Sweden; (Z.F.); (S.A.)
- Correspondence: ; Tel.: +46-(0)18-471-4532; Fax: +46-(0)18-471-4862
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Fu Z, Yuan Y, Jiang M. Occupational burnout among clinical research associates in China. Occup Med (Lond) 2021; 71:336-342. [PMID: 34415348 DOI: 10.1093/occmed/kqab111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Clinical research associates (CRAs) play an important role in pharmaceutical research and development. Despite growing concern about occupational burnout among CRAs in China, little is known about this topic. AIMS We evaluated the factors associated with occupational burnout among CRAs in China and assessed the extent and nature of this syndrome in order to develop effective countermeasures. METHODS In October 2020, we collected data from a convenience sample of 438 CRAs from 26 major cities across China using a custom-designed questionnaire. We evaluated their psychopathological status and degree of occupational burnout based on the Maslach Burnout Inventory. Factors associated with burnout were identified using the Wilcoxon rank test, Kruskal-Wallis test, Spearman's rank correlation and multivariable ordinal logistic regression. RESULTS Of the 438 CRAs analyzed, 82% showed signs of occupational burnout, with a large proportion experiencing moderate burnout (50%). Burnout in Chinese CRAs manifested as emotional exhaustion (77%), depersonalization (66%) and low sense of accomplishment (15%). The severity of burnout was significantly affected by mode of working (odds ratio [OR] 1.56, 95% confidence interval [CI] 1.04-2.34), average number of working hours per week (OR 1.68, 95% CI 1.14-2.46), support provided by the hospital (OR 3.13, 95% CI 1.40-6.99) and likelihood of receiving a promotion (OR 4.05, 95% CI 1.34-12.22) (all P < 0.05). CONCLUSIONS The incidence of occupational burnout among CRAs in China is high. Companies and hospitals must take effective measures to establish support systems for CRAs in order to alleviate this situation and thereby ensure the quality of clinical trials.
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Affiliation(s)
- Z Fu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education, Beijing), National Drug Clinical Trial Center, Peking University Cancer Hospital & Institute, Beijing, China
| | - Y Yuan
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education, Beijing), National Drug Clinical Trial Center, Peking University Cancer Hospital & Institute, Beijing, China
| | - M Jiang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education, Beijing), National Drug Clinical Trial Center, Peking University Cancer Hospital & Institute, Beijing, China
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Liu Y, Liu J, Tan Z, Jiang X, Wang L, Lu Y, Fu X, Song Q, Zhao L, Yuan S, Bi N, Xu Y, Zhu Z, Zhu G, Li J, Xie C, Ma X, Xiao G, Ge H, Liu H, Zhao J, Liang J, Shen Q, Xu Q, Liu R, Zhou S, Kong W, Zhong W, Jin X, Wang Y, Jiang Y, Fu Z, Xie Y, Cai J, Li Z, Machtay M, Curran W, Kong F. P29.05 Gross Tumor Volume Contouring Variations in Radiation Therapy of Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Liu J, Jiang X, Tan Z, Li Z, Wang Y, Xie Y, Cai J, Zhu G, Li J, Xie C, Ma X, Xiao G, Liu H, Ge H, Zhao J, Liang J, Shen Q, Xu Q, Liu R, Zhou S, Zhong W, Kong W, Jiang Y, Xu Y, Fu Z, Liu Y, Zhu Z, Bi N, Yuan S, Zhao L, Song Q, Lu Y, Fu X, Wang L, Machtay M, Curran W, Kong F. P29.03 Thoracic Organs at Risk (OARs) Contouring Variations and Consensus in Radiation Therapy for Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Fu Z, Yang H, Han H, Jia D, Xu L, Su G, Wang Z. Effect of whole-grain rice on pellet quality, geese performance, and economic benefits. J APPL POULTRY RES 2021. [DOI: 10.1016/j.japr.2021.100176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Xu ZW, Jiang ZL, Fu Z, Huang S. Changed expression of microRNAs may predict postoperative atrial fibrillation in patients with cardiac surgery. Eur Rev Med Pharmacol Sci 2021; 25:287-292. [PMID: 33506917 DOI: 10.26355/eurrev_202101_24394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Changes of microRNAs (miRNAs) may contribute to the pathogenesis and progression of postoperative atrial fibrillation (POAF) in patients undergoing cardiac valve surgery. This study aimed to measure the expression levels of miRNAs in peripheral blood, as well as their target mRNAs, in POAF patients and normal controls (non-POAF), and to evaluate the potential of miRNAs as promising biomarkers to predict POAF. PATIENTS AND METHODS The expression of miRNAs in peripheral blood, including miR-27b, miR-133a, miR-328, miR-499 and their target mRNAs, was analyzed in 109 POAF patients and 96 non-POAF patients via quantitative real-time polymerase chain reaction (RT-PCR). We compared differences between the two groups and also analyzed the treat reaction to amiodarone. RESULTS All miRNAs in POAF patients were significantly highly expressed. Compared to non-POAF, the expression of miR-27b, miR-133a, miR-328, miR-499 increased in both groups of POAF patients, and miR-499 was the only upregulated miRNAs in the amiodarone - group versus amiodarone + group and non-POAF. Among the upregulated miRNAs, miR-499 expression significantly changed in amiodarone + and amiodarone - patients (p = 0.005). The ROC curve analysis revealed that miR-499 might be a potential therapeutic response biomarker. The miRNA-mRNA interactions revealed 10 mRNAs regulated by miR-27b, miR-133a, and miR- 499. CONCLUSIONS We found an expression on miR-133a, miR-27b, miR-328, and miR-499 was significantly different between these groups, with a high expression being observed in POAF patients compared to non-POAF patients. Further, the present results showed that miR-499 was significantly upregulated in amiodarone - patients, compared to non-POAF, and amiodarone + patients. This finding indicates that miR-499 may be a potential biomarker for predicting the occurrence of POAF after cardiac valve surgery and treat the reaction to amiodarone.
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Affiliation(s)
- Z-W Xu
- Department of Cardiac Surgery, Huai'an First People's Hospital, The Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huai'an, China.
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Fu Z, Akula S, Thorpe M, Hellman L. Marked difference in efficiency of the digestive enzymes pepsin, trypsin, chymotrypsin, and pancreatic elastase to cleave tightly folded proteins. Biol Chem 2021; 402:861-867. [PMID: 33977684 DOI: 10.1515/hsz-2020-0386] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 04/30/2021] [Indexed: 11/15/2022]
Abstract
In order for the intestinal mucosa to absorb dietary proteins they have to be digested into single amino acids or very short peptides of a length of not more than four amino acids. In order to study the efficiency of the digestive endopeptidases to digest folded proteins we have analyzed several target proteins under different conditions, native proteins, heat denatured and acid treated. The three pancreatic serine proteases, trypsin, chymotrypsin, and pancreatic elastase, were found to be remarkable inefficient in cleaving native folded proteins whereas pepsin, which acts at a very low pH (pH 1.2) was much more efficient, possibly due to the denaturing conditions and thereby better accessibility to internal cleavage sites at the low pH. Heat treatment improved the cleavage considerably by all three pancreatic enzymes, but acid treatment followed by return to neutral pH did not have any major effect. Cleavage at the low pH when the protein is in a denatured state, is apparently very efficient. This indicates that pepsin is the prime enzyme cleaving the properly folded native proteins and that the pancreatic enzymes primarily are involved in generating single amino acids or very short peptides for efficient uptake by the intestinal mucosa.
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Affiliation(s)
- Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, S-751 24Uppsala, Sweden
| | - Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, S-751 24Uppsala, Sweden
| | - Michael Thorpe
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, S-751 24Uppsala, Sweden
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, S-751 24Uppsala, Sweden
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Chen H, Jin Z, Fu Z, Xia F. SK2 channel deletion reduces susceptibility to bupivacaine-induced cardiotoxicity in mouse. Hum Exp Toxicol 2021; 40:1796-1802. [PMID: 33887967 DOI: 10.1177/09603271211010912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Bupivacaine is frequently used for regional anesthesia and postoperative analgesia. However, an inadvertent intravenous injection can cause severe cardiotoxicity, manifesting as arrhythmia, hypotension, and even cardiac asystole. The mechanism of bupivacaine-mediated cardiotoxicity remains unclear. SK2 knockout mice (SK) and wild-type mice (WT) were divided into four groups, with 12 mice per group. We determined the difference in bupivacaine cardiotoxicity between SK2 knockout and WT mice by measuring the time to the first arrhythmia (Tarrhythmia) and the time to asystole (Tasystole). Secondary indicators of cardiotoxicity were the time from the beginning of bupivacaine infusion to 20% prolongation of the QT interval (TQT) and the time to 20% widening of the QRS complex (TQRS). Tarrhythmia and Tasystole were significantly longer in the SK-bupi group than in the WT-bupi group (both P < 0.05). TQT and TQRS were longer in the SK-bupi group than in the WT-bupi group (all P < 0.05). The time to 25%, 50%, and 75% reduction in HR in the SK-bupi group was significantly longer than in the WT-bupi group (all P < 0.05). Knocking out the SK2 channel can reduce bupivacaine-induced cardiotoxicity in the mouse.
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Affiliation(s)
- H Chen
- Department of Anesthesiology, 89657First Affiliated Hospital, Wenzhou Medical University, Zhejiang, China
| | - Z Jin
- Department of Anesthesiology, 89657First Affiliated Hospital, Wenzhou Medical University, Zhejiang, China
| | - Z Fu
- Department of Pain Management, 66555Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - F Xia
- Department of Anesthesiology, 89657First Affiliated Hospital, Wenzhou Medical University, Zhejiang, China
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Abstract
Apelin has been reported to regulate mitochondrial function in myocardial ischemia-reperfusion injury and cerebral ischemia-reperfusion injury. However, the role of apelin-13 in lung ischemia-reperfusion injury (LIRI) remains unclear. This study established an experimental rat model to evaluate the underlying mechanisms of apelin-13 on LIRI. Twenty-four rats were randomly divided to sham operation group (group SM), ischemia/reperfusion group (group IR), and apelin-13 treatment group (group APL). The effects of apelin-13 on LIRI were determined histologically using H&E staining, while the wet/dry weight ratio was used to assess lung edema caused by LIRI. Inflammatory cytokines were also detected in Bronchoalveolar lavage (BAL) fluid by ELISA. The protein expression of UCP2 and the morphological changes of mitochondria were determined by western blotting and electromicroscopy, respectively. The results demonstrated the structural damage of lung tissues and lung edema in group IR. An increased level of inflammatory cytokines including IL-1β, IL-6 and TNF-α was observed in rats with LIRI using ELISA. After that, oxidative stress and morphological damage of mitochondria were also shown in group IR. Yet, the application of apelin-13 reversed all these deleterious effects in group APL. The protective effects of apelin-13 were indicated by decreased reactive oxygen species (ROS) and elevated UCP2 expression levels in rats. In conclusion, this study revealed that apelin-13 had protective effects against LIRI via attenuating lung edema, the production of inflammatory cytokines, oxidative stress and mitochondrial dysfunction.
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Affiliation(s)
- F Xia
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, 12589Shandong University, Jinan, Shandong Province, China
- Department of Anesthesiology, 89657The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - H Chen
- Department of Anesthesiology, 89657The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Z Jin
- Department of Anesthesiology, 89657The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, China
| | - Z Fu
- Department of Pain Management, Shandong Provincial Hospital, Cheeloo College of Medicine, 12589Shandong University, Jinan, Shandong Province, China
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Berglund P, Akula S, Fu Z, Thorpe M, Hellman L. Extended Cleavage Specificity of the Rat Vascular Chymase, a Potential Blood Pressure Regulating Enzyme Expressed by Rat Vascular Smooth Muscle Cells. Int J Mol Sci 2020; 21:ijms21228546. [PMID: 33198413 PMCID: PMC7697883 DOI: 10.3390/ijms21228546] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 11/09/2020] [Accepted: 11/10/2020] [Indexed: 01/25/2023] Open
Abstract
Serine proteases constitute the major protein content of the cytoplasmic granules of several hematopoietic cell lineages. These proteases are encoded from four different loci in mammals. One of these loci, the chymase locus, has in rats experienced a massive expansion in the number of functional genes. The human chymase locus encodes 4 proteases, whereas the corresponding locus in rats contains 28 such genes. One of these new genes has changed tissue specificity and has been found to be expressed primarily in vascular smooth muscle cells, and therefore been named rat vascular chymase (RVC). This β-chymase has been claimed to be a potent angiotensin-converting enzyme by cleaving angiotensin (Ang) I into Ang II and thereby having the potential to regulate blood pressure. To further characterize this enzyme, we have used substrate phage display and a panel of recombinant substrates to obtain a detailed quantitative view of its extended cleavage specificity. RVC was found to show a strong preference for Phe and Tyr in the P1 position, but also to accept Leu and Trp in this position. A strong preference for Ser or Arg in the P1’ position, just C-terminally of the cleavage site, and a preference for aliphatic amino acids in most other positions surrounding the cleavage site was also seen. Interesting also was a relatively strict preference for Gly in positions P3’ and P4’. RVC thereby shares similarity in its specificity to the mouse mucosal mast cell chymase mMCP-1, which efficiently converts Ang I to Ang II. This similarity adds support for the role of β-chymases as potent angiotensin converters in rodents, as their α-chymases, which have the capacity to efficiently convert Ang I into Ang II in other mammalian lineages, have become elastases. However, interestingly we found that RVC cleaved both after Arg2 and Phe8 in Ang I. Furthermore this cleavage was more than two hundred times less efficient than the consensus site obtained from the phage display analysis, indicating that RVC has a very low ability to cleave Ang I, raising serious doubts about its role in Ang I conversion.
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Affiliation(s)
| | | | | | | | - Lars Hellman
- Correspondence: ; Tel.: +46-(0)18-471-4532; Fax: +46-(0)18-471-4862
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Li H, Arslan M, Fu Z, Lee H, Mikula M. Family History of Crohn’s Disease (CD) May Be a Risk Factor for Developing de novo CD following Ileal Pouch Anal Anastomosis (IPAA) for Ulcerative Colitis (UC). Am J Clin Pathol 2020. [DOI: 10.1093/ajcp/aqaa161.328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction/Objective
A subset of patients with an established diagnosis of UC develops signs of CD (de novo CD) following IPAA. While the etiology and risk factors of de novo CD remain largely unknown, preliminary studies have shown controversial results regarding family history of inflammatory bowel disease (IBD) and smoking history.
Methods
Patients that underwent IPAA for UC, with at least 1 year of follow-up, were identified (n=161; 1996 to 2018). We retrospectively reviewed the electronic medical records. Patients that were diagnosed with de novo CD during the follow-up period were further identified. Smoking history and family history of IBD were evaluated. Chi square test was performed to compare the frequencies. Odds ratio (OR) and 95% confidence intervals (CIs) were estimated by logistic regression model. P<0.05 was considered statistically significant.
Results
29 de novo CD were identified. At the time of proctocolectomy, the family history of IBD and smoking history was documented in 152 UC patients including 27 that subsequently developed de novo CD. 23 of 152 had a family history of IBD (12 UC, 9 CD and 2 IBD, NOS). 19/129 (14.7%) UC patients without a family history of any type of IBD, 4/9 (44.4%) with a family history of CD, and 4/12 (33.3%) with a family history of UC developed de novo CD. Patients with a family history of CD were more likely to develop de novo CD post IPAA than those without a family history of any type of IBD (OR 4.63, 95% CI 1.14-18.82, p=0.03). Family history of UC did not correlate with development of de novo CD (OR 2.90; 95% CI 0.79-10.57, p=0.108). At the time of proctocoletomy, 11 were current smokers, 25 were former smokers, and 116 never smoked. In de novo CD group, there were 4/27 (14.8 %) former smokers and 23/27 (85.2 %) never smokers. No de novo CD patient was current smoker. In the UC group that remained as UC following IPAA, 11/125 (8.8%) were current smokers, 21/125 (16.8 %) former smokers, and 93/125 (74.4 %) were never smokers. Current smoking status was not associated with development of de novo CD (p = 0.214).
Conclusion
Family history of CD may be a risk factor for developing de novo CD following IPAA for UC. Current smoking status was not associated with development of de novo CD following IPAA for UC.
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Affiliation(s)
- H Li
- Pathology, Albany Medical Center, Albany, New York, UNITED STATES
| | - M Arslan
- Pathology, Albany Medical Center, Albany, New York, UNITED STATES
| | - Z Fu
- Pathology, Albany Medical Center, Albany, New York, UNITED STATES
| | - H Lee
- Pathology, Albany Medical Center, Albany, New York, UNITED STATES
| | - M Mikula
- Albany Medical College, Albany, New York, UNITED STATES
- E. Lee, Department of Surgery, Albany Medical Center, Albany, New York, UNITED STATES
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Akula S, Paivandy A, Fu Z, Thorpe M, Pejler G, Hellman L. How Relevant Are Bone Marrow-Derived Mast Cells (BMMCs) as Models for Tissue Mast Cells? A Comparative Transcriptome Analysis of BMMCs and Peritoneal Mast Cells. Cells 2020; 9:cells9092118. [PMID: 32957735 PMCID: PMC7564378 DOI: 10.3390/cells9092118] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 07/29/2020] [Revised: 09/14/2020] [Accepted: 09/16/2020] [Indexed: 01/09/2023] Open
Abstract
Bone marrow-derived mast cells (BMMCs) are often used as a model system for studies of the role of MCs in health and disease. These cells are relatively easy to obtain from total bone marrow cells by culturing under the influence of IL-3 or stem cell factor (SCF). After 3 to 4 weeks in culture, a nearly homogenous cell population of toluidine blue-positive cells are often obtained. However, the question is how relevant equivalents these cells are to normal tissue MCs. By comparing the total transcriptome of purified peritoneal MCs with BMMCs, here we obtained a comparative view of these cells. We found several important transcripts that were expressed at very high levels in peritoneal MCs, but were almost totally absent from the BMMCs, including the major chymotryptic granule protease Mcpt4, the neurotrophin receptor Gfra2, the substance P receptor Mrgprb2, the metalloprotease Adamts9 and the complement factor 2 (C2). In addition, there were a number of other molecules that were expressed at much higher levels in peritoneal MCs than in BMMCs, including the transcription factors Myb and Meis2, the MilR1 (Allergin), Hdc (Histidine decarboxylase), Tarm1 and the IL-3 receptor alpha chain. We also found many transcripts that were highly expressed in BMMCs but were absent or expressed at low levels in the peritoneal MCs. However, there were also numerous MC-related transcripts that were expressed at similar levels in the two populations of cells, but almost absent in peritoneal macrophages and B cells. These results reveal that the transcriptome of BMMCs shows many similarities, but also many differences to that of tissue MCs. BMMCs can thereby serve as suitable models in many settings concerning the biology of MCs, but our findings also emphasize that great care should be taken when extrapolating findings from BMMCs to the in vivo function of tissue-resident MCs.
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Affiliation(s)
- Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.); (M.T.)
| | - Aida Paivandy
- Department of Medical Biochemistry and Microbiology, Uppsala University, The Biomedical Center, Box 589, SE-751 23 Uppsala, Sweden; (A.P.); (G.P.)
| | - Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.); (M.T.)
| | - Michael Thorpe
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.); (M.T.)
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Uppsala University, The Biomedical Center, Box 589, SE-751 23 Uppsala, Sweden; (A.P.); (G.P.)
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Box 7011, SE-75007 Uppsala, Sweden
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.); (M.T.)
- Correspondence: ; Tel.: +46-(0)18-471-4532; Fax: +46-(0)18-471-4862
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Bastos A, Fu Z, Ciais P, Friedlingstein P, Sitch S, Pongratz J, Weber U, Reichstein M, Anthoni P, Arneth A, Haverd V, Jain A, Joetzjer E, Knauer J, Lienert S, Loughran T, McGuire PC, Obermeier W, Padrón RS, Shi H, Tian H, Viovy N, Zaehle S. Impacts of extreme summers on European ecosystems: a comparative analysis of 2003, 2010 and 2018. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190507. [PMID: 32892728 DOI: 10.1098/rstb.2019.0507] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
In Europe, three widespread extreme summer drought and heat (DH) events have occurred in 2003, 2010 and 2018. These events were comparable in magnitude but varied in their geographical distribution and biomes affected. In this study, we perform a comparative analysis of the impact of the DH events on ecosystem CO2 fluxes over Europe based on an ensemble of 11 dynamic global vegetation models (DGVMs), and the observation-based FLUXCOM product. We find that all DH events were associated with decreases in net ecosystem productivity (NEP), but the gross summer flux anomalies differ between DGVMs and FLUXCOM. At the annual scale, FLUXCOM and DGVMs indicate close to neutral or above-average land CO2 uptake in DH2003 and DH2018, due to increased productivity in spring and reduced respiration in autumn and winter compensating for less photosynthetic uptake in summer. Most DGVMs estimate lower gross primary production (GPP) sensitivity to soil moisture during extreme summers than FLUXCOM. Finally, we show that the different impacts of the DH events at continental-scale GPP are in part related to differences in vegetation composition of the regions affected and to regional compensating or offsetting effects from climate anomalies beyond the DH centres. This article is part of the theme issue 'Impacts of the 2018 severe drought and heatwave in Europe: from site to continental scale'.
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Affiliation(s)
- A Bastos
- Department of Geography, Ludwig Maximilians Universität, Luisenstrasse 37, 80333 Munich, Germany
| | - Z Fu
- Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA-CNRS-UVSQ, UMR8212, 91191 Gif-sur-Yvette, France
| | - P Ciais
- Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA-CNRS-UVSQ, UMR8212, 91191 Gif-sur-Yvette, France
| | - P Friedlingstein
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
| | - S Sitch
- College of Life and Environmental Sciences, University of Exeter, Exeter EX4 4RJ, UK
| | - J Pongratz
- Department of Geography, Ludwig Maximilians Universität, Luisenstrasse 37, 80333 Munich, Germany.,Max Planck Institute for Meteorology, 20146 Hamburg, Germany
| | - U Weber
- Max Planck Institute for Biogeochemistry, 07745 Jena, Germany
| | - M Reichstein
- Max Planck Institute for Biogeochemistry, 07745 Jena, Germany
| | - P Anthoni
- Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research / Atmospheric Environmental Research, 82467 Garmisch-Partenkirchen, Germany
| | - A Arneth
- Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research / Atmospheric Environmental Research, 82467 Garmisch-Partenkirchen, Germany
| | - V Haverd
- CSIRO Oceans and Atmosphere, Canberra 2601, Australia
| | - A Jain
- Department of Atmospheric Sciences, University of Illinois, Urbana, IL 61801, USA
| | - E Joetzjer
- Laboratoire Evolution et Diversite Biologique UMR 5174, CNRS Universite Paul Sabatier, Toulouse, France
| | - J Knauer
- CSIRO Oceans and Atmosphere, Canberra 2601, Australia
| | - S Lienert
- Climate and Environmental Physics, Physics Institute and Oeschger Centre for Climate Change Research, University of Bern, Bern 3012, Switzerland
| | - T Loughran
- Department of Geography, Ludwig Maximilians Universität, Luisenstrasse 37, 80333 Munich, Germany
| | - P C McGuire
- Department of Meteorology, University of Reading, Earley Gate, Reading RG6 6BB, UK
| | - W Obermeier
- Department of Geography, Ludwig Maximilians Universität, Luisenstrasse 37, 80333 Munich, Germany
| | - R S Padrón
- Department of Environmental Systems Science, Institute for Atmospheric and Climate Science, ETH Zürich, Zürich, Switzerland
| | - H Shi
- International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences, Auburn University, 602 Duncan Drive, Auburn, AL 36849, USA
| | - H Tian
- International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences, Auburn University, 602 Duncan Drive, Auburn, AL 36849, USA
| | - N Viovy
- Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA-CNRS-UVSQ, UMR8212, 91191 Gif-sur-Yvette, France
| | - S Zaehle
- Max Planck Institute for Biogeochemistry, 07745 Jena, Germany
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Han DL, Wang LL, Zhang GF, Yang WF, Chai J, Lin HM, Fu Z, Yu JM. MiRNA-485-5p, inhibits esophageal cancer cells proliferation and invasion by down-regulating O-linked N-acetylglucosamine transferase. Eur Rev Med Pharmacol Sci 2020; 23:2809-2816. [PMID: 31002132 DOI: 10.26355/eurrev_201904_17556] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Previous reports suggest that miRNA-485-5p is dysregulated and contributes to tumorigenesis in some cancer types. Nevertheless, the biological role of miRNA-485-5p in esophageal cancer (EC) is not well understood. Additionally, we found that the expression of miR-485-5p in EC tissues was aberrant. PATIENTS AND METHODS Quantitative RT-PCR (qRT-PCR) was used to demonstrate the expression of miRNA-485-5p in EC cell lines. Cell counting kit-8 (CCK-8) assay and transwell assay indicated that miRNA-485-5p overexpression inhibited cell proliferation, migration, and invasion in EC cell lines. Additionally, Western blotting, dual-luciferase reporter assay, and rescue assay predicted that O-linked N-acetylglucosamine transferase (OGT) was a direct target of miRNA-485-5p. Moreover, we showed that miRNA-485-5p regulated EC tumorigenesis by down-regulating OGT expression in vitro and in vivo. RESULTS The upregulation of miR-485-5p (fold change = 44 and 26 in ECA109 and TE-1, respectively; p<0.001) was showed by qRT-PCR. Compared with the control groups, the expression miR-485-5p significantly suppressed the proliferation, migration, and invasion of EC cells. The bioinformatic analysis predicted that the 3' untranslated region (UTR) of OGT contains one miR-485-5p target sequences. Western blotting and dual-luciferase reporter assay showed that activation of OGT 3'UTR was increased by co-transfection with miR-485-5p. Finally, CCK-8 assay predicted that the rescue effects of OGT expression on miR-485-5p induced inhibition of cell growth and tumor weight in Eca109 and TE1 cells. CONCLUSIONS Our results suggest that miRNA-485-5p is a suppressor of EC tumorigenesis and could serve as a novel candidate for therapeutic applications in EC treatment.
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Affiliation(s)
- D-L Han
- Department of Radiation Oncology, Shandong University Affiliated Shandong Cancer Hospital and Institute, Jinan, Shandong Province, China.
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Bastos A, Ciais P, Friedlingstein P, Sitch S, Pongratz J, Fan L, Wigneron JP, Weber U, Reichstein M, Fu Z, Anthoni P, Arneth A, Haverd V, Jain AK, Joetzjer E, Knauer J, Lienert S, Loughran T, McGuire PC, Tian H, Viovy N, Zaehle S. Direct and seasonal legacy effects of the 2018 heat wave and drought on European ecosystem productivity. Sci Adv 2020; 6:eaba2724. [PMID: 32577519 PMCID: PMC7286671 DOI: 10.1126/sciadv.aba2724] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 04/14/2020] [Indexed: 05/23/2023]
Abstract
In summer 2018, central and northern Europe were stricken by extreme drought and heat (DH2018). The DH2018 differed from previous events in being preceded by extreme spring warming and brightening, but moderate rainfall deficits, yet registering the fastest transition between wet winter conditions and extreme summer drought. Using 11 vegetation models, we show that spring conditions promoted increased vegetation growth, which, in turn, contributed to fast soil moisture depletion, amplifying the summer drought. We find regional asymmetries in summer ecosystem carbon fluxes: increased (reduced) sink in the northern (southern) areas affected by drought. These asymmetries can be explained by distinct legacy effects of spring growth and of water-use efficiency dynamics mediated by vegetation composition, rather than by distinct ecosystem responses to summer heat/drought. The asymmetries in carbon and water exchanges during spring and summer 2018 suggest that future land-management strategies could influence patterns of summer heat waves and droughts under long-term warming.
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Affiliation(s)
- A. Bastos
- Department of Geography, Ludwig Maximilian University of Munich, Munich, Luisenstr. 37, 80333 Munich, Germany
| | - P. Ciais
- Laboratoire des Sciences du Climat et de l’Environnement (LSCE), CEA-CNRS-UVSQ, UMR8212, 91191 Gif-sur-Yvette, France
| | - P. Friedlingstein
- College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
- LMD/IPSL, ENS, PSL Université, École Polytechnique, Institut Polytechnique de Paris, Sorbonne Université, CNRS, Paris, France
| | - S. Sitch
- College of Life and Environmental Sciences, University of Exeter, Exeter EX4 4RJ, UK
| | - J. Pongratz
- Department of Geography, Ludwig Maximilian University of Munich, Munich, Luisenstr. 37, 80333 Munich, Germany
- Max Planck Institute for Meteorology, 20146 Hamburg, Germany
| | - L. Fan
- ISPA, UMR 1391, INRA Nouvelle-Aquitaine, Université de Bordeaux, Grande Ferrage, Villenave d’Ornon, France
| | - J. P. Wigneron
- ISPA, UMR 1391, INRA Nouvelle-Aquitaine, Université de Bordeaux, Grande Ferrage, Villenave d’Ornon, France
| | - U. Weber
- Max Planck Institute for Biogeochemistry, 07745 Jena, Germany
| | - M. Reichstein
- Max Planck Institute for Biogeochemistry, 07745 Jena, Germany
| | - Z. Fu
- Laboratoire des Sciences du Climat et de l’Environnement (LSCE), CEA-CNRS-UVSQ, UMR8212, 91191 Gif-sur-Yvette, France
| | - P. Anthoni
- Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research/Atmospheric Environmental Research, 82467 Garmisch-Partenkirchen, Germany
| | - A. Arneth
- Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research/Atmospheric Environmental Research, 82467 Garmisch-Partenkirchen, Germany
| | - V. Haverd
- CSIRO Oceans and Atmosphere, Canberra, ACT 2601, Australia
| | - A. K. Jain
- Department of Atmospheric Sciences, University of Illinois, Urbana, IL 61801, USA
| | - E. Joetzjer
- CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France
| | - J. Knauer
- CSIRO Oceans and Atmosphere, Canberra, ACT 2601, Australia
| | - S. Lienert
- Climate and Environmental Physics, Physics Institute and Oeschger Centre for Climate Change Research, University of Bern, Bern CH-3012, Switzerland
| | - T. Loughran
- Department of Geography, Ludwig Maximilian University of Munich, Munich, Luisenstr. 37, 80333 Munich, Germany
| | - P. C. McGuire
- Department of Meteorology, Department of Geography & Environmental Science, and National Centre for Atmospheric Science, University of Reading, Earley Gate, RG66BB Reading, UK
| | - H. Tian
- International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences, Auburn University, 602 Duncan Drive, Auburn, AL 36849, USA
| | - N. Viovy
- Laboratoire des Sciences du Climat et de l’Environnement (LSCE), CEA-CNRS-UVSQ, UMR8212, 91191 Gif-sur-Yvette, France
| | - S. Zaehle
- Max Planck Institute for Biogeochemistry, 07745 Jena, Germany
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Moya EA, Go A, CB K, Fu Z, TS S, FL P. Neuronal HIF-1α in the nucleus tractus solitarius contributes to ventilatory acclimatization to hypoxia. J Physiol 2020; 598:2021-2034. [PMID: 32026480 PMCID: PMC7230006 DOI: 10.1113/jp279331] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 02/04/2020] [Indexed: 12/21/2022] Open
Abstract
KEY POINTS We hypothesized that hypoxia inducible factor 1α (HIF-1α) in CNS respiratory centres is necessary for ventilatory acclimatization to hypoxia (VAH); VAH is a time-dependent increase in baseline ventilation and the hypoxic ventilatory response (HVR) occurring over days to weeks of chronic sustained hypoxia (CH). Constitutive deletion of HIF-1α in CNS neurons in transgenic mice tended to blunt the increase in HVR that occurs in wild-type mice with CH. Conditional deletion of HIF-1α in glutamatergic neurons of the nucleus tractus solitarius during CH significantly decreased ventilation in acute hypoxia but not normoxia in CH mice. These effects are not explained by changes in metabolic rate, nor CO2 , and there were no changes in the HVR in normoxic mice. HIF-1α mediated changes in gene expression in CNS respiratory centres are necessary in addition to plasticity of arterial chemoreceptors for normal VAH. ABSTRACT Chronic hypoxia (CH) produces a time-dependent increase of resting ventilation and the hypoxic ventilatory response (HVR) that is called ventilatory acclimatization to hypoxia (VAH). VAH involves plasticity in arterial chemoreceptors and the CNS [e.g. nucleus tractus solitarius (NTS)], although the signals for this plasticity are not known. We hypothesized that hypoxia inducible factor 1α (HIF-1α), an O2 -sensitive transcription factor, is necessary in the NTS for normal VAH. We tested this in two mouse models using loxP-Cre gene deletion. First, HIF-1α was constitutively deleted in CNS neurons (CNS-HIF-1α-/- ) by breeding HIF-1α floxed mice with mice expressing Cre-recombinase driven by the calcium/calmodulin-dependent protein kinase IIα promoter. Second, HIF-1α was deleted in NTS neurons in adult mice (NTS-HIF-1α-/- ) by microinjecting adeno-associated virus that expressed Cre-recombinase in HIF-1α floxed mice. In normoxic control mice, HIF-1α deletion in the CNS or NTS did not affect ventilation, nor the acute HVR (10-15 min hypoxic exposure). In mice acclimatized to CH for 1 week, ventilation in hypoxia was blunted in CNS-HIF-1α-/- and significantly decreased in NTS-HIF-1α-/- compared to control mice (P < 0.0001). These changes were not explained by differences in metabolic rate or CO2 . Immunofluorescence showed that HIF-1α deletion in NTS-HIF-1α-/- was restricted to glutamatergic neurons. The results indicate that HIF-1α is a necessary signal for VAH and the previously described plasticity in glutamatergic neurotransmission in the NTS with CH. HIF-1α deletion had no effect on the increase in normoxic ventilation with acclimatization to CH, indicating this is a distinct mechanism from the increased HVR with VAH.
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Affiliation(s)
- Esteban A. Moya
- Section of Physiology, Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of California, San Diego, La Jolla, California, 92093-0623, USA
- Centro de Investigación en Fisiología del Ejercicio, Universidad Mayor, Santiago, 8340589, Chile
| | - A Go
- Section of Physiology, Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of California, San Diego, La Jolla, California, 92093-0623, USA
| | - Kim CB
- Providence Medical Institute, Torrance, California, 90503, USA
| | - Z Fu
- Section of Physiology, Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of California, San Diego, La Jolla, California, 92093-0623, USA
| | - Simonson TS
- Section of Physiology, Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of California, San Diego, La Jolla, California, 92093-0623, USA
| | - Powell FL
- Section of Physiology, Division of Pulmonary, Critical Care & Sleep Medicine, Department of Medicine, University of California, San Diego, La Jolla, California, 92093-0623, USA
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Yang H, Tan Q, Chen GH, Chen JS, Fu Z, Ren FL, Luo XY, Wang H. Plasma retinol as a predictive biomarker of disease activity and response to acitretin monotherapy in children with generalized pustular psoriasis. J Eur Acad Dermatol Venereol 2020; 34:e270-e272. [PMID: 31991497 DOI: 10.1111/jdv.16244] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- H Yang
- Department of Dermatology, Children's Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Q Tan
- Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - G H Chen
- Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - J S Chen
- National Clinical Research Center for Child Health and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Z Fu
- China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - F L Ren
- Department of Dermatology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - X Y Luo
- National Clinical Research Center for Child Health and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - H Wang
- Department of Dermatology, Children's Hospital of Chongqing Medical University, Chongqing, China.,National Clinical Research Center for Child Health and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
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Xie WY, Fu Z, Pan NX, Yan HC, Wang XQ, Gao CQ. Leucine promotes the growth of squabs by increasing crop milk protein synthesis through the TOR signaling pathway in the domestic pigeon (Columba livia). Poult Sci 2020; 98:5514-5524. [PMID: 31172174 DOI: 10.3382/ps/pez296] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 05/24/2019] [Indexed: 12/18/2022] Open
Abstract
Leucine (Leu) plays a critical regulatory role in protein synthesis, however, the effects and molecular mechanisms of Leu on crop milk protein in the domestic pigeons (Columba livia) are still unknown. Therefore, the study aimed to investigate the effects of dietary Leu supplementation on crop milk protein synthesis and the growth performance of squabs and the possible underlying mechanism. A total of 240 pairs of breeding pigeons (1102.3 ± 9.5 g/pair) were randomly assigned to 1 of 5 treatments, including a positive control (PC) diet that had adequate crude protein (crude protein, CP = 18%; Leu = 1.30%), a negative control (NC) diet that was low in CP (CP = 16%, Leu = 1.30%), and NC diets supplemented with Leu at 0.15%, 0.45%, or 1.05%. Compared with the NC diet, 0.15 to 0.45% Leu supplementation decreased BW loss and increased relative crop weight, crop thickness, and protein levels in the crop tissue and milk of breeding pigeons. However, dietary supplementation with 1.05% Leu inhibited ADFI in breeding pigeons. Dietary supplementation with 0.15 to 0.45% Leu decreased the mortality rate and increased the BW, eviscerated yield, and breast muscle yield of young squabs. The protein expression levels of the target of rapamycin (TOR), ribosomal protein S6 kinase 1 (S6K1), ribosomal protein S6 kinase (S6), eukaryotic initiation factor 4E binding protein 1 (4EBP1), and eukaryotic translation initiation factor 4E (eIF4E) were upregulated in the crop tissue of breeding pigeons in PC, 0.15% and 0.45% Leu-supplemented groups. Collectively, these results indicated that 0.15 to 0.45% Leu supplementation could decrease BW loss, increase milk protein synthesis in the crop of breeding pigeons, and enhance the survival rate and growth performance of young squabs through the TOR signaling pathway.
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Affiliation(s)
- W Y Xie
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, China
| | - Z Fu
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, China
| | - N X Pan
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, China
| | - H C Yan
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, China
| | - X Q Wang
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, China
| | - C Q Gao
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry of Agriculture, Guangzhou 510642, China
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Akula S, Paivandy A, Fu Z, Thorpe M, Pejler G, Hellman L. Quantitative In-Depth Analysis of the Mouse Mast Cell Transcriptome Reveals Organ-Specific Mast Cell Heterogeneity. Cells 2020; 9:cells9010211. [PMID: 31947690 PMCID: PMC7016716 DOI: 10.3390/cells9010211] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [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: 12/10/2019] [Revised: 01/09/2020] [Accepted: 01/11/2020] [Indexed: 12/19/2022] Open
Abstract
Mast cells (MCs) are primarily resident hematopoietic tissue cells that are localized at external and internal surfaces of the body where they act in the first line of defense. MCs are found in all studied vertebrates and have also been identified in tunicates, an early chordate. To obtain a detailed insight into the biology of MCs, here we analyzed the transcriptome of MCs from different mouse organs by RNA-seq and PCR-based transcriptomics. We show that MCs at different tissue locations differ substantially in their levels of transcripts coding for the most abundant MC granule proteins, even within the connective tissue type, or mucosal MC niches. We also demonstrate that transcript levels for the major granule proteins, including the various MC-restricted proteases and the heparin core protein, can be several orders of magnitude higher than those coding for various surface receptors and enzymes involved in protease activation, as well as enzymes involved in the synthesis of heparin, histamine, leukotrienes, and prostaglandins. Interestingly, our analyses revealed an almost complete absence in MCs of transcripts coding for cytokines at baseline conditions, indicating that cytokines are primarily produced by activated MCs. Bone marrow-derived MCs (BMMCs) are often used as equivalents of tissue MCs. Here, we show that these cells differ substantially from tissue MCs with regard to their transcriptome. Notably, they showed a transcriptome indicative of relatively immature cells, both with respect to the expression of granule proteases and of various enzymes involved in the processing/synthesis of granule compounds, indicating that care should be taken when extrapolating findings from BMMCs to the in vivo function of tissue-resident MCs. Furthermore, the latter finding indicates that the development of fully mature tissue-resident MCs requires a cytokine milieu beyond what is needed for in vitro differentiation of BMMCs. Altogether, this study provides a comprehensive quantitative view of the transcriptome profile of MCs resident at different tissue locations that builds nicely on previous studies of both the mouse and human transcriptome, and form a solid base for future evolutionary studies of the role of MCs in vertebrate immunity.
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Affiliation(s)
- Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.); (M.T.)
| | - Aida Paivandy
- Department of Medical Biochemistry and Microbiology, BMC, Box 589, SE-751 23 Uppsala, Sweden; (A.P.); (G.P.)
| | - Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.); (M.T.)
| | - Michael Thorpe
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.); (M.T.)
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, BMC, Box 589, SE-751 23 Uppsala, Sweden; (A.P.); (G.P.)
- Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, SE-75007 Uppsala, Sweden
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (S.A.); (Z.F.); (M.T.)
- Correspondence: ; Tel.: +46-(0)18-471-4532; Fax: +46-(0)18-471-4862
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Chen MJ, Fu Z, Jiang SG, Wang XQ, Yan HC, Gao CQ. Targeted disruption of TORC1 retards young squab growth by inhibiting the synthesis of crop milk protein in breeding pigeon (Columba livia). Poult Sci 2020; 99:416-422. [PMID: 32416826 PMCID: PMC7587900 DOI: 10.3382/ps/pez513] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 06/28/2019] [Accepted: 08/22/2019] [Indexed: 12/18/2022] Open
Abstract
This study was conducted to explore the regulatory role of the target of rapamycin complex 1 (TORC1) signaling pathway in crop milk synthesis in breeding pigeons (Columba livia). Three groups of breeding pigeons in the lactation period (n = 30 pairs/group) were respectively injected with rapamycin (RAPA, a specific inhibitor of the target of rapamycin complex) at doses of 0 (vehicle, control), 0.6, or 1.2 mg/kg body weight (BW)/day via the wing vein for 7 days. The average daily feed intake (ADFI) and BW of the breeding pigeons and the BW of young squabs were respectively recorded throughout the experimental period. The breeding pigeons were sacrificed to collect their crop tissues, crop milk, and serum on the eighth day of the experiment. The results showed that neither 0.6 nor 1.2 mg/kg BW RAPA injection affected BW loss or ADFI in breeding pigeons (P > 0.05), while crop thickness and crop relative weight were significantly decreased (P < 0.05) in the 1.2 mg/kg BW rapamycin-injected group. Simultaneously, RAPA (especially at 1.2 mg/kg BW) decreased the crude protein, αs1-casein, αs2-casein, β-casein, and amino acid contents (Asp, Thr, Ser, Glu, Gly, Ala, Cys, Val, Met, Ile, Leu, Tyr, Lys, His, Arg, and Pro) of crop milk (P < 0.05) and the concentrations of albumin, total protein, and uric acid in the serum of breeding pigeons (P < 0.05). Additionally, the expression of TORC1 pathway-related proteins (TORC1, S6K1, S6, 4EBP1, and eIF4E) was downregulated in the crop tissues of breeding pigeons by 0.6 or 1.2 mg/kg BW/day RAPA injection (P < 0.05). Accordingly, the average daily gain (ADG) of young squabs declined, and the mortality rate increased significantly (P < 0.05). Together, the results showed that RAPA reduced protein and amino acid levels in the crop milk of breeding pigeons and retarded young squab growth, suggesting a crucial role of TORC1 in crop milk synthesis in breeding pigeons.
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Affiliation(s)
- M J Chen
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou, Guangdong 510642, China
| | - Z Fu
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou, Guangdong 510642, China
| | - S G Jiang
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou, Guangdong 510642, China
| | - X Q Wang
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou, Guangdong 510642, China
| | - H C Yan
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou, Guangdong 510642, China
| | - C Q Gao
- College of Animal Science, South China Agricultural University/Guangdong Provincial Key Laboratory of Animal Nutrition Control/National Engineering Research Center for Breeding Swine Industry, Guangzhou, Guangdong 510642, China.
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Zhongwei Y, Akula S, Fu Z, de Garavilla L, Kervinen J, Thorpe M, Hellman L. Extended Cleavage Specificities of Rabbit and Guinea Pig Mast Cell Chymases: Two Highly Specific Leu-Ases. Int J Mol Sci 2019; 20:ijms20246340. [PMID: 31888202 PMCID: PMC6941018 DOI: 10.3390/ijms20246340] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 11/19/2019] [Revised: 12/10/2019] [Accepted: 12/13/2019] [Indexed: 12/23/2022] Open
Abstract
Serine proteases constitute the major protein content of mast cell (MC) secretory granules. These proteases can generally be subdivided into chymases and tryptases based on their primary cleavage specificity. Here, we presented the extended cleavage specificities of a rabbit β-chymase and a guinea pig α-chymase. Analyses by phage display screening and a panel of recombinant substrates showed a marked similarity in catalytic activity between the enzymes, both being strict Leu-ases (cleaving on the carboxyl side of Leu). Amino acid sequence alignment of a panel of mammalian chymotryptic MC proteases and 3D structural modeling identified an unusual residue in the rabbit enzyme at position 216 (Thr instead of more common Gly), which is most likely critical for the Leu-ase specificity. Almost all mammals studied, except rabbit and guinea pig, express classical chymotryptic enzymes with similarly extended specificities, indicating an important role of chymase in MC biology. The rabbit and guinea pig are the only two mammalian species currently known to lack a classical MC chymase. Key questions are now how this major difference affects their MC function, and if genes of other loci can rescue the loss of a chymotryptic activity in MCs of these two species.
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Affiliation(s)
- Yuan Zhongwei
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (Y.Z.); (S.A.); (Z.F.); (M.T.)
| | - Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (Y.Z.); (S.A.); (Z.F.); (M.T.)
| | - Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (Y.Z.); (S.A.); (Z.F.); (M.T.)
| | | | - Jukka Kervinen
- Tosoh Bioscience LLC, 3604 Horizon Drive, King of Prussia, PA 19406, USA;
| | - Michael Thorpe
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (Y.Z.); (S.A.); (Z.F.); (M.T.)
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, Uppsala, The Biomedical Center, Box 596, SE-751 24 Uppsala, Sweden; (Y.Z.); (S.A.); (Z.F.); (M.T.)
- Correspondence: ; Tel.: +46-(0)18-471-4532; Fax: +46-(0)18-471-4862
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Fu Z, Akula S, Thorpe M, Hellman L. Highly Selective Cleavage of TH2-Promoting Cytokines by the Human and the Mouse Mast Cell Tryptases, Indicating a Potent Negative Feedback Loop on TH2 Immunity. Int J Mol Sci 2019; 20:ijms20205147. [PMID: 31627390 PMCID: PMC6834136 DOI: 10.3390/ijms20205147] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/11/2019] [Accepted: 10/15/2019] [Indexed: 12/11/2022] Open
Abstract
Mast cells (MC) are resident tissue cells found primarily at the interphase between tissues and the environment. These evolutionary old cells store large amounts of proteases within cytoplasmic granules, and one of the most abundant of these proteases is tryptase. To look deeper into the question of their in vivo targets, we have analyzed the activity of the human MC tryptase on 69 different human cytokines and chemokines, and the activity of the mouse tryptase (mMCP-6) on 56 mouse cytokines and chemokines. These enzymes were found to be remarkably restrictive in their cleavage of these potential targets. Only five were efficiently cleaved by the human tryptase: TSLP, IL-21, MCP3, MIP-3b, and eotaxin. This strict specificity indicates a regulatory function of these proteases and not primarily as unspecific degrading enzymes. We recently showed that the human MC chymase also had a relatively strict specificity, indicating that both of these proteases have regulatory functions. One of the most interesting regulatory functions may involve controlling excessive TH2-mediated inflammation by cleaving several of the most important TH2-promoting inflammatory cytokines, including IL-18, IL-33, TSLP, IL-15, and IL-21, indicating a potent negative feedback loop on TH2 immunity.
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Affiliation(s)
- Zhirong Fu
- Department of Cell and Molecular Biology, Uppsala University, SE-75124 Uppsala, Sweden.
| | - Srinivas Akula
- Department of Cell and Molecular Biology, Uppsala University, SE-75124 Uppsala, Sweden.
| | - Michael Thorpe
- Department of Cell and Molecular Biology, Uppsala University, SE-75124 Uppsala, Sweden.
| | - Lars Hellman
- Department of Cell and Molecular Biology, Uppsala University, SE-75124 Uppsala, Sweden.
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Li L, Yuan S, Yu J, Liu N, Zhang H, Tao R, Zhao S, Chen Z, Fu Z, Li W, Gao Y. Potential Imaging Biomarkers Predictive of the Response to Bevacizumab Combined with Conventional Therapy in Newly Diagnosed Glioblastoma. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.2297] [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: 11/17/2022]
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Iacocca E, Liu TM, Reid AH, Fu Z, Ruta S, Granitzka PW, Jal E, Bonetti S, Gray AX, Graves CE, Kukreja R, Chen Z, Higley DJ, Chase T, Le Guyader L, Hirsch K, Ohldag H, Schlotter WF, Dakovski GL, Coslovich G, Hoffmann MC, Carron S, Tsukamoto A, Kirilyuk A, Kimel AV, Rasing T, Stöhr J, Evans RFL, Ostler T, Chantrell RW, Hoefer MA, Silva TJ, Dürr HA. Spin-current-mediated rapid magnon localisation and coalescence after ultrafast optical pumping of ferrimagnetic alloys. Nat Commun 2019; 10:1756. [PMID: 30988403 PMCID: PMC6465265 DOI: 10.1038/s41467-019-09577-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 03/13/2019] [Indexed: 11/09/2022] Open
Abstract
Sub-picosecond magnetisation manipulation via femtosecond optical pumping has attracted wide attention ever since its original discovery in 1996. However, the spatial evolution of the magnetisation is not yet well understood, in part due to the difficulty in experimentally probing such rapid dynamics. Here, we find evidence of a universal rapid magnetic order recovery in ferrimagnets with perpendicular magnetic anisotropy via nonlinear magnon processes. We identify magnon localisation and coalescence processes, whereby localised magnetic textures nucleate and subsequently interact and grow in accordance with a power law formalism. A hydrodynamic representation of the numerical simulations indicates that the appearance of noncollinear magnetisation via optical pumping establishes exchange-mediated spin currents with an equivalent 100% spin polarised charge current density of 107 A cm-2. Such large spin currents precipitate rapid recovery of magnetic order after optical pumping. The magnon processes discussed here provide new insights for the stabilization of desired meta-stable states.
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Affiliation(s)
- E Iacocca
- Department of Applied Mathematics, University of Colorado, Boulder, CO, 80309, USA
- National Institute of Standards and Technology, Boulder, CO, 80305, USA
- Department of Physics, Division for Theoretical Physics, Chalmers University of Technology, Gothenburg, 412 96, Sweden
| | - T-M Liu
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - A H Reid
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Z Fu
- School of Physics, Science, and Engineering, Tongji University, Shanghai, 200092, China
| | - S Ruta
- Department of Physics, University of York, York, YO10 5DD, UK
| | - P W Granitzka
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - E Jal
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - S Bonetti
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Physics, Stockholm University, Stockholm, 106 91, Sweden
- Department of Molecular Science and Nanosystems, Ca' Foscari University of Venice, Venezia-Mestre, 30172, Italy
| | - A X Gray
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Department of Physics, Temple University, 1925 N. 12th St., Philadelphia, PA, 19122, USA
| | - C E Graves
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - R Kukreja
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - Z Chen
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - D J Higley
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - T Chase
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - L Le Guyader
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
- Spectroscopy & Coherent Scattering, European X-Ray Free-Electron Laser Facility GmbH, Holzkoppel 4, 22869, Schenefeld, Germany
| | - K Hirsch
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - H Ohldag
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - W F Schlotter
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - G L Dakovski
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - G Coslovich
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - M C Hoffmann
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - S Carron
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - A Tsukamoto
- Department of Electronics and Computer Science, Nihon University, 7-24-1 Narashino-dai Funabashi, Chiba, 274-8501, Japan
| | - A Kirilyuk
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - A V Kimel
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - Th Rasing
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - J Stöhr
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA
| | - R F L Evans
- Department of Physics, University of York, York, YO10 5DD, UK
| | - T Ostler
- Physique des Matériaux et Nanostructures, Université de Liège, Liège, B-4000, Sart Tilman, Belgium
- Faculty of Arts, Computing, Engineering and Sciences, Sheffield Hallam University, Howard Street, Sheffield, S1 1WB, UK
| | - R W Chantrell
- Department of Physics, University of York, York, YO10 5DD, UK
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands
| | - M A Hoefer
- Department of Applied Mathematics, University of Colorado, Boulder, CO, 80309, USA
| | - T J Silva
- National Institute of Standards and Technology, Boulder, CO, 80305, USA
| | - H A Dürr
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
- Department of Physics and Astronomy, Uppsala University, Box 516, 751 20, Uppsala, Sweden.
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