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Lu A, Li KY, Su GN, Yang PZ. [Literature data mining on the current research status of uveitis in China]. Zhonghua Yan Ke Za Zhi 2024; 60:359-369. [PMID: 38583060 DOI: 10.3760/cma.j.cn112142-20230929-00121] [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: 04/08/2024]
Abstract
Objective: To analyze the current research status of uveitis in China. Methods: It was a bibliometric analysis study. Using search formulas covering uveitis and its multiple subtypes, uveitis-related literature in English with publication dates from 2013 to 2022 was retrieved in Web of Science core databases through certain search strategies. This study used the latent Dirichlet allocation (LDA) algorithm to build topic models and analyzed the trends of research topics in recent years. Bibliometric analysis was used to analyze and visualize the bibliometric indicators (e.g., number of publications, citations, and H-index) of the included literature using tools such as VOSviewer software. Results: Over the past decade, China has published 1 657 papers on uveitis, ranking second globally. However, there is still room for improvement in terms of the H-index (58) and citation (12.28 per publication). Countries such as the USA (43.04%) and the United Kingdom (62.54%) were engaged in more international collaboration. We identified ten optimal LDA topics for uveitis literature in China such as immunotherapy, Behçet's disease, and Vogt-Koyanagi-Harada syndrome. Research on uveitis in China was mostly published in Ocular Immunology and Inflammation (92). Conclusions: China has made remarkable progress in uveitis research. Nonetheless, there is still untapped potential to enhance our global academic influence. It is encouraged to promote international collaborations, harness our expertise in areas like Behçet's disease and VKH syndrome, and publish our scientific achievements in high-impact journals.
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Affiliation(s)
- A Lu
- Department of Ophthalmology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - K Y Li
- Department of Ophthalmology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - G N Su
- Department of Ophthalmology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - P Z Yang
- Department of Ophthalmology, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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2
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Long Z, Hesley GK, Lu A, Hangiandreou NJ, Gorny KR, Tiegs-Heiden CA. MRgFUS ablation of a recurrent tenosynovial giant cell tumor in the foot using ExAblate 2100 system in combination with patient immobilization device. Radiography (Lond) 2024; 30:840-842. [PMID: 38574580 DOI: 10.1016/j.radi.2024.03.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/04/2024] [Accepted: 03/19/2024] [Indexed: 04/06/2024]
Abstract
INTRODUCTION Magnetic Resonance-guided Focused Ultrasound (MRgFUS) treatment for certain anatomy locations can be extremely challenging due to patient positioning and potential motion. This present study describes the treatment of a recurrent tenosynovial giant cell tumor of the plantar forefoot using the ExAblate 2100 system in combination with patient immobilization device. METHODS Prior to the treatment, several patient immobilization devices were investigated. Vacuum cushions were selected and tested for safety and compatibility with the treatment task and the MR environment. RESULTS During the treatment, one vacuum cushion immobilized the patient's right leg in knee flexion and allowed the bottom of the foot to be securely positioned on the treatment window. Another vacuum cushion supported the patient upper body extended outside the scanner bore. 19 sonications were successfully executed. The treatment was judged to be successful. No immediate complications were observed. CONCLUSIONS MRgFUS treatment of a recurrent tenosynovial giant cell tumor of the right plantar forefoot was successful with the use of patient immobilization vacuum cushions. IMPLICATIONS FOR PRACTICE The immobilization system could be utilized to aid future MRgFUS treatment of lesions in challenging anatomic locations. Various sizes of the vacuum cushions are available to potentially better accommodate other body parts and treatment configurations.
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Affiliation(s)
- Z Long
- Department of Radiology, Mayo Clinic, MN, USA.
| | - G K Hesley
- Department of Radiology, Mayo Clinic, MN, USA
| | - A Lu
- Department of Radiology, Mayo Clinic, MN, USA
| | | | - K R Gorny
- Department of Radiology, Mayo Clinic, MN, USA
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Ledda V, George C, Glasbey J, Labib P, Li E, Lu A, Kudrna L, Nepogodiev D, Picciochi M, Williams I, Bhangu A. Uncertainties and opportunities in delivering environmentally sustainable surgery: the surgeons' view. Anaesthesia 2024; 79:293-300. [PMID: 38207004 DOI: 10.1111/anae.16195] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/08/2023] [Indexed: 01/13/2024]
Abstract
Surgery is a carbon-heavy activity and creates a high volume of waste. Surgical teams around the world want to deliver more environmentally sustainable surgery but are unsure what to do and how to create change. There are many interventions available, but resources and time are limited. Capital investment into healthcare and engagement of senior management are challenging. However, frontline teams can change behaviours and drive wider change. Patients have a voice here too, as they would like to ensure their surgery does not harm their local community but are concerned about the effects on them when changes are made. Environmentally sustainable surgery is at the start of its journey. Surgeons need to rapidly upskill their generic knowledge base, identify which measures they can implement locally and take part in national research programmes. Surgical teams in the NHS have the chance to create a world-leading programme that can bring change to hospitals around the world. This article provides an overview of how surgeons see the surgical team being involved in environmentally sustainable surgery.
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Affiliation(s)
- V Ledda
- NIHR Programme Grant for Environmentally Sustainable Surgery, Institute of Applied Health Research, University of Birmingham, UK
| | - C George
- Department of Anaesthesia, Christian Medical College and Hospital, Ludhiana, India
| | - J Glasbey
- NIHR Programme Grant for Environmentally Sustainable Surgery, Institute of Applied Health Research, University of Birmingham, UK
| | - P Labib
- NIHR Programme Grant for Environmentally Sustainable Surgery, Institute of Applied Health Research, University of Birmingham, UK
| | - E Li
- NIHR Programme Grant for Environmentally Sustainable Surgery, Institute of Applied Health Research, University of Birmingham, UK
| | - A Lu
- Department of Anaesthesia, North West School of Anaesthesia, Manchester, UK
| | - L Kudrna
- Institute of Applied Health Research, University of Birmingham, Birmingham, UK
| | - D Nepogodiev
- NIHR Programme Grant for Environmentally Sustainable Surgery, Institute of Applied Health Research, University of Birmingham, UK
| | - M Picciochi
- NIHR Programme Grant for Environmentally Sustainable Surgery, Institute of Applied Health Research, University of Birmingham, UK
| | - I Williams
- School of Social Policy, University of Birmingham, Birmingham, UK
| | - A Bhangu
- NIHR Programme Grant for Environmentally Sustainable Surgery, Institute of Applied Health Research, University of Birmingham, UK
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Lu A, Song Y, Wang D, Liao G, Zheng B, Liu P, Lei T. Kinetic and Thermodynamic Characteristics of Torrefied Acer palmatum. ACS Omega 2024; 9:4474-4485. [PMID: 38313524 PMCID: PMC10831971 DOI: 10.1021/acsomega.3c07179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 01/05/2024] [Accepted: 01/10/2024] [Indexed: 02/06/2024]
Abstract
The goal of this research was to investigate the effects of torrefying temperature (220, 260, and 300 °C) on the physicochemical properties, kinetics, thermodynamic parameters, and reaction processes of Acer palmatum (AP) during the pyrolysis process. The kinetics of raw materials and torrefied biomass were studied by using three kinetic models, and the main function graph approach was employed to find the reaction mechanism. The torrefied biomass produced at temperatures of 220 °C (AP-220), 260 °C (AP-260), and 300 °C (AP-300) was thermogravimetrically analyzed at four different heating rates (5, 10, 15, and 20 °C/min). In comparison to the raw material, the average activation energy of torrefied biomass declined with increasing temperature, from 174.13 to 84.67 kJ/mol (FWO), 172.52 to 81.24 kJ/mol (KAS and DAEM). The volatile contents of AP and AP-220 are higher than those of AP-260 and AP-300, indicating that the random nucleation model occupies the central position. Compared with the raw biomass, the average Gibbs free energy (ΔG) of torrefied biomass increased from 157.97 to 195.38 kJ/mol. The mean enthalpy change (ΔH) during the torrefaction process is positive, while the mean entropy change (ΔS) of the torrefaction of biomass is negative, decreasing from 16.93 to -151.53 kJ/mol (FWO) and from 14.36 to -156.06 kJ/mol (KAS and DAEM). Overall, the findings provide a comprehensive understanding of the kinetics and improved features of torrefied biomass as a high-quality solid fuel.
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Affiliation(s)
- Ailing Lu
- Shangtian
Environmental Restoration Co., Ltd, Changzhou 213164, China
| | - Yintao Song
- National-Local
Joint Engineering Research Center of Biomass Refining and High-Quality
Utilization, Changzhou Key Laboratory of Biomass Green, Safe &
High Value Utilization Technology, Institute of Urban and Rural Mining,
Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization
Technology, Changzhou University, Changzhou 213164, China
| | - Dianer Wang
- Shangtian
Environmental Restoration Co., Ltd, Changzhou 213164, China
| | - Guangdong Liao
- Shangtian
Environmental Restoration Co., Ltd, Changzhou 213164, China
| | - Binguo Zheng
- School
of Civil Engineering and Architecture, Zhengzhou
Institute of Aviation Industry Management, Zhengzhou, Henan 450046, China
| | - Peng Liu
- National-Local
Joint Engineering Research Center of Biomass Refining and High-Quality
Utilization, Changzhou Key Laboratory of Biomass Green, Safe &
High Value Utilization Technology, Institute of Urban and Rural Mining,
Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization
Technology, Changzhou University, Changzhou 213164, China
| | - Tingzhou Lei
- National-Local
Joint Engineering Research Center of Biomass Refining and High-Quality
Utilization, Changzhou Key Laboratory of Biomass Green, Safe &
High Value Utilization Technology, Institute of Urban and Rural Mining,
Changzhou Key Laboratory of Biomass Green, Safe & High Value Utilization
Technology, Changzhou University, Changzhou 213164, China
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Maria NI, Papoin J, Raparia C, Sun Z, Josselsohn R, Lu A, Katerji H, Syeda MM, Polsky D, Paulson R, Kalfa T, Barnes BJ, Zhang W, Blanc L, Davidson A. Human TLR8 induces inflammatory bone marrow erythromyeloblastic islands and anemia in SLE-prone mice. Life Sci Alliance 2023; 6:e202302241. [PMID: 37495396 PMCID: PMC10372407 DOI: 10.26508/lsa.202302241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 07/28/2023] Open
Abstract
Anemia commonly occurs in systemic lupus erythematosus, a disease characterized by innate immune activation by nucleic acids. Overactivation of cytoplasmic sensors by self-DNA or RNA can cause erythroid cell death, while sparing other hematopoietic cell lineages. Whereas chronic inflammation is involved in this mechanism, less is known about the impact of systemic lupus erythematosus on the BM erythropoietic niche. We discovered that expression of the endosomal ssRNA sensor human TLR8 induces fatal anemia in Sle1.Yaa lupus mice. We observed that anemia was associated with a decrease in erythromyeloblastic islands and a block in differentiation at the CFU-E to proerythroblast transition in the BM. Single-cell RNAseq analyses of isolated BM erythromyeloblastic islands from human TLR8-expressing mice revealed that genes associated with essential central macrophage functions including adhesion and provision of nutrients were down-regulated. Although compensatory stress erythropoiesis occurred in the spleen, red blood cell half-life decreased because of hemophagocytosis. These data implicate the endosomal RNA sensor TLR8 as an additional innate receptor whose overactivation causes acquired failure of erythropoiesis via myeloid cell dysregulation.
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Affiliation(s)
- Naomi I Maria
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Northwell Health, Hempstead, NY, USA
| | - Julien Papoin
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Northwell Health, Hempstead, NY, USA
| | - Chirag Raparia
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Northwell Health, Hempstead, NY, USA
| | - Zeguo Sun
- Department of Medicine, Mount Sinai Medical Center, New York, NY, USA
| | - Rachel Josselsohn
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Ailing Lu
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
| | - Hani Katerji
- Department of Pathology, University of Rochester, Rochester, NY, USA
| | - Mahrukh M Syeda
- The Ronald O. Perelman Department of Dermatology, New York University Grossman School of Medicine, New York, NY, USA
| | - David Polsky
- The Ronald O. Perelman Department of Dermatology, New York University Grossman School of Medicine, New York, NY, USA
| | - Robert Paulson
- Department of Veterinary and Biomedical Sciences, Penn State College of Agricultural Sciences, University Park, PA, USA
| | - Theodosia Kalfa
- Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Betsy J Barnes
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Northwell Health, Hempstead, NY, USA
| | - Weijia Zhang
- Department of Medicine, Mount Sinai Medical Center, New York, NY, USA
| | - Lionel Blanc
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Northwell Health, Hempstead, NY, USA
| | - Anne Davidson
- Institute of Molecular Medicine, Feinstein Institutes for Medical Research, Manhasset, NY, USA
- Donald and Barbara Zucker School of Medicine at Northwell Health, Hempstead, NY, USA
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Buhagiar R, Lu A, Liu S, Sahadevan S, Schulz LM, Ghosh J, Yeoh A. A pilot study to assess the impact of aboriginal and torres strait islander cultural humility webinars on australian medical school students. BMC Med Educ 2023; 23:626. [PMID: 37661272 PMCID: PMC10476379 DOI: 10.1186/s12909-023-04612-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 08/24/2023] [Indexed: 09/05/2023]
Abstract
BACKGROUND The Aboriginal and Torres Strait Islander Health Curriculum Framework helps higher education providers to deliver safe and well-informed cultural humility education. However, there is currently a scarcity of evidence surrounding the efficacy and impact of cultural humility education. This study will use qualitative and quantitative research methods to evaluate learning outcomes from an Indigenous health educational webinar aimed at Australian medical students. METHODS A pilot study was conducted following a group of Australian medical students who attended an educational Indigenous health (IH) culturally responsive webinar. Recruitment was conducted via the webinar hosts' social media pages. Quantitative methods involved sending one pre- and two post-webinar questionnaires to attendees. To assess participants' retention of information, one post-webinar survey was sent out immediately after the webinar and another three months after the webinar. These questionnaires were designed to reflect pre-determined learning objectives for the webinar. Qualitative methods involved a focus group discussion to identify common themes from participant feedback. RESULTS Twenty-six participants were included in the final quantitative analysis. Most of the participants were clinical students between 18 and 24 years old who did not identify as Aboriginal and/or Torres Strait Islander. There was a significant increase (p = 0.007) between pre-intervention (M = 0.35, SD = 0.26) and post-webinar knowledge for the learning outcome exploring the links between health and education (M = 047, SD = 0.25). No results were obtained from the three months post-intervention questionnaire. The qualitative analysis synthesized feedback from three participants and identified presenter delivery style as an important mediator of webinar effectiveness. CONCLUSIONS There was a significant increase in knowledge and understanding for the learning outcome that explored the links between health and education. We attribute this partly to the engaging and conversational delivery style of the webinar presenters. The importance of Indigenous facilitators that encourage reflective teaching should not be understated. Our results suggest that cultural humility webinars can have a positive impact on medical students' understanding of the Aboriginal and/or Torres Strait Islander health landscape. This pilot study warrants further research on a larger population.
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Affiliation(s)
- R Buhagiar
- School of Medicine, Deakin University, 75 Pigdons Road, Waurn Ponds, VIC, 3216, Australia.
| | - A Lu
- School of Medicine, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - S Liu
- School of Medicine, Monash University, Wellington Road, Clayton, VIC, 3800, Australia
| | - S Sahadevan
- School of Medicine, University of Queensland, St Lucia, QLD, 4072, Australia
| | - L M Schulz
- School of Medicine, Western Sydney University, 255 Elizabeth Street, Sydney, NSW, 2000, Australia
| | - J Ghosh
- School of Medicine, Deakin University, 75 Pigdons Road, Waurn Ponds, 3216, VIC, Australia
| | - A Yeoh
- Institute of Evidence-Based Healthcare, Bond University, 14 University Drive, Robina, QLD, 4226, Australia
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Bayer JMM, Spark J, Krcmar M, Formica M, Gwyther K, Srivastava A, Selloni A, Cotter M, Hartmann J, Polari A, Bilgrami ZR, Sarac C, Lu A, Yung AR, McGowan A, McGorry P, Shah JL, Cecchi GA, Mizrahi R, Nelson B, Corcoran CM. The SPEAK study rationale and design: A linguistic corpus-based approach to understanding thought disorder. Schizophr Res 2023; 259:80-87. [PMID: 36732110 PMCID: PMC10387495 DOI: 10.1016/j.schres.2022.12.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/27/2022] [Accepted: 12/30/2022] [Indexed: 02/04/2023]
Abstract
AIM Psychotic symptoms are typically measured using clinical ratings, but more objective and sensitive metrics are needed. Hence, we will assess thought disorder using the Research Domain Criteria (RDoC) heuristic for language production, and its recommended paradigm of "linguistic corpus-based analyses of language output". Positive thought disorder (e.g., tangentiality and derailment) can be assessed using word-embedding approaches that assess semantic coherence, whereas negative thought disorder (e.g., concreteness, poverty of speech) can be assessed using part-of-speech (POS) tagging to assess syntactic complexity. We aim to establish convergent validity of automated linguistic metrics with clinical ratings, assess normative demographic variance, determine cognitive and functional correlates, and replicate their predictive power for psychosis transition among at-risk youths. METHODS This study will assess language production in 450 English-speaking individuals in Australia and Canada, who have recent onset psychosis, are at clinical high risk (CHR) for psychosis, or who are healthy volunteers, all well-characterized for cognition, function and symptoms. Speech will be elicited using open-ended interviews. Audio files will be transcribed and preprocessed for automated natural language processing (NLP) analyses of coherence and complexity. Data analyses include canonical correlation, multivariate linear regression with regularization, and machine-learning classification of group status and psychosis outcome. CONCLUSIONS This prospective study aims to characterize language disturbance across stages of psychosis using computational approaches, including psychometric properties, normative variance and clinical correlates, important for biomarker development. SPEAK will create a large archive of language data available to other investigators, a rich resource for the field.
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Affiliation(s)
- J M M Bayer
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia.
| | - J Spark
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - M Krcmar
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - M Formica
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - K Gwyther
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - A Srivastava
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A Selloni
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - M Cotter
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - J Hartmann
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - A Polari
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | | | - C Sarac
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - A Lu
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Alison R Yung
- Orygen, Parkville, Victoria, Australia; Institute for Mental and Physical Health and Clinical Translation (IMPACT), Deakin University, Australia; School of Health Sciences, University of Manchester, United Kingdom
| | - A McGowan
- Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - P McGorry
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - J L Shah
- McGill Department of Psychiatry & Douglas Research Hospital, Montreal, Canada
| | - G A Cecchi
- IBM TJ Watson Research Center, Yorktown Heights, NY, USA
| | - R Mizrahi
- McGill Department of Psychiatry & Douglas Research Hospital, Montreal, Canada
| | - B Nelson
- Orygen, Parkville, Victoria, Australia; Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - C M Corcoran
- Icahn School of Medicine at Mount Sinai, New York, NY, USA; James J. Peters Veterans Administration, Bronx, NY, USA
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Oliver AA, Koons EK, Trester PS, Kleinow JE, Jonsgaard RS, Vercnocke AJ, Bilgin C, Kadirvel R, Leng S, Lu A, Dragomir-Daescu D, Kallmes DF. Medical Imaging Compatibility of Magnesium- and Iron-Based Bioresorbable Flow Diverters. AJNR Am J Neuroradiol 2023; 44:668-674. [PMID: 37169543 PMCID: PMC10249688 DOI: 10.3174/ajnr.a7873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/16/2023] [Indexed: 05/13/2023]
Abstract
BACKGROUND AND PURPOSE Bioresorbable flow diverters are under development to mitigate complications associated with conventional flow-diverter technology. One proposed advantage is the ability to reduce metal-induced artifacts in follow-up medical imaging. In the current work, the medical imaging compatibility of magnesium- and iron-based bioresorbable flow diverters is assessed relative to an FDA-approved control in phantom models. MATERIALS AND METHODS Bioresorbable flow diverters, primarily composed of braided magnesium or antiferromagnetic iron alloy wires, were compared with an FDA-approved control flow diverter. The devices were assessed for MR imaging safety in terms of magnetically induced force and radiofrequency heating using 1.5T, 3T, and 7T field strength clinical scanners. The devices were deployed in phantom models, and metal-induced image artifacts were assessed in the 3 MR imaging scanners and a clinical CT scanner following clinical scan protocols; device visibility was assessed under fluoroscopy. RESULTS The magnesium-based bioresorbable flow diverter, iron-based bioresorbable flow diverter, and the control device all demonstrated MR imaging safety in terms of magnetically induced force and radiofrequency heating at all 3 field strengths. The bioresorbable flow diverters did not elicit excessive MR imaging artifacts at any field strength relative to the control. Furthermore, the bioresorbable flow diverters appeared to reduce blooming artifacts in CT relative to the control. The iron-based bioresorbable flow diverter and control device were visible under standard fluoroscopy. CONCLUSIONS We have demonstrated the baseline medical imaging compatibility of magnesium and antiferromagnetic iron alloy bioresorbable flow diverters. Future work will evaluate the medical imaging characteristics of the bioresorbable flow diverters in large-animal models.
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Affiliation(s)
- A A Oliver
- From the Department of Biomedical Engineering and Physiology (A.A.O., E.K.K., S.L., D.D.-D, D.F.K.), Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
- Physiology and Biomedical Engineering (A.A.O., D.D.-D.)
| | - E K Koons
- From the Department of Biomedical Engineering and Physiology (A.A.O., E.K.K., S.L., D.D.-D, D.F.K.), Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
| | - P S Trester
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
| | - J E Kleinow
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
| | - R S Jonsgaard
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
| | - A J Vercnocke
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
| | - C Bilgin
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
| | - R Kadirvel
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
- Neurosurgery (R.K.), Mayo Clinic, Rochester, Minnesota
| | - S Leng
- From the Department of Biomedical Engineering and Physiology (A.A.O., E.K.K., S.L., D.D.-D, D.F.K.), Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
| | - A Lu
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
| | - D Dragomir-Daescu
- From the Department of Biomedical Engineering and Physiology (A.A.O., E.K.K., S.L., D.D.-D, D.F.K.), Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota
- Physiology and Biomedical Engineering (A.A.O., D.D.-D.)
| | - D F Kallmes
- From the Department of Biomedical Engineering and Physiology (A.A.O., E.K.K., S.L., D.D.-D, D.F.K.), Mayo Clinic Graduate School of Biomedical Sciences, Rochester, Minnesota
- Departments of Radiology (A.A.O., E.K.K., P.S.T., J.E.K., R.S.J., A.J.V., C.B., R.K. S.L., A.L., D.F.K.)
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Zhang M, Lu A, Wang H, Yang J. Quercetin downregulates the expression of IL15 in cancer cells through DNA methylation. Eur Rev Med Pharmacol Sci 2023; 27:2580-2590. [PMID: 37013776 DOI: 10.26355/eurrev_202303_31795] [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: 04/05/2023]
Abstract
OBJECTIVE This study aimed to investigate the effect of quercetin on cellular immunity (via IL15 expression) against cancer and to elucidate its regulatory mechanism. MATERIALS AND METHODS HeLa cells and A549 cells were cultured in vitro and were divided into control (DMSO treated) and experimental groups (treated with different concentrations of quercetin). Transcript levels of IL15 and DNA methyltransferase (DNMTS) were measured using quantitative reverse transcription polymerase chain reaction (qRT-PCR). Genomic DNA was extracted, treated with bisulfite, and the promoter region of IL15 was cloned. Finally, Sanger sequencing was used to detect the degree of promoter methylation. RESULTS Following quercetin treatment, the expression of IL15 was significantly downregulated in HeLa and A549 cells. The methylation level of IL15 promoter in HeLa cells was about twice that of the control group, and the methylation level of IL15 promoter in A549 cells was about three times that of the control group. CONCLUSIONS Quercetin inhibits cancer cell proliferation while downregulating IL15 expression, and this regulation is achieved by increasing the methylation of the IL15 promoter.
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Affiliation(s)
- M Zhang
- Shanghai Key Laboratory of Plant Functional Genomics and Resources, Shanghai Chenshan Botanical Garden, Shanghai, China.
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Mushtaq A, Woodrum D, Thompson S, Adamo D, Lomas D, Favazza C, Lu A, Kwon E. Abstract No. 91 MRI-Guided Cryoablation of Oligo-Metastatic Prostate Cancer to the Pelvic Lymph Nodes. J Vasc Interv Radiol 2023. [DOI: 10.1016/j.jvir.2022.12.138] [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: 02/27/2023] Open
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Huang H, Siewerdsen JH, Lu A, Hu Y, Zbijewski W, Unberath M, Weiss CR, Sisniega A. Multi-Stage Adaptive Spline Autofocus (MASA) with a Learned Metric for Deformable Motion Compensation in Interventional Cone-Beam CT. Proc SPIE Int Soc Opt Eng 2023; 12463:1246314. [PMID: 37937146 PMCID: PMC10629227 DOI: 10.1117/12.2654361] [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: 11/09/2023]
Abstract
Purpose Cone-beam CT (CBCT) is widespread in abdominal interventional imaging, but its long acquisition time makes it susceptible to patient motion. Image-based autofocus has shown success in CBCT deformable motion compensation, via deep autofocus metrics and multi-region optimization, but it is challenged by the large parameter dimensionality required to capture intricate motion trajectories. This work leverages the differentiable nature of deep autofocus metrics to build a novel optimization strategy, Multi-Stage Adaptive Spine Autofocus (MASA), for compensation of complex deformable motion in abdominal CBCT. Methods MASA poses the autofocus problem as a multi-stage adaptive sampling strategy of the motion trajectory, sampled with Hermite spline basis with variable amplitude and knot temporal positioning. The adaptive method permits simultaneous optimization of the sampling phase, local temporal sampling density, and time-dependent amplitude of the motion trajectory. The optimization is performed in a multi-stage schedule with increasing number of knots that progressively accommodates complex trajectories in late stages, preconditioned by coarser components from early stages, and with minimal increase in dimensionality. MASA was evaluated in controlled simulation experiments with two types of motion trajectories: i) combinations of slow drifts with sudden jerk (sigmoid) motion; and ii) combinations of periodic motion sources of varying frequency into multi-frequency trajectories. Further validation was obtained in clinical data from liver CBCT featuring motion of contrast-enhanced vessels, and soft-tissue structures. Results The adaptive sampling strategy provided successful motion compensation in sigmoid trajectories, compared to fixed sampling strategies (mean SSIM increase of 0.026 compared to 0.011). Inspection of the estimated motion showed the capability of MASA to automatically allocate larger sampling density to parts of the scan timeline featuring sudden motion, effectively accommodating complex motion without increasing the problem dimension. Experiments on multi-frequency trajectories with 3-stage MASA (5, 10, and 15 knots) yielded a twofold SSIM increase compared to single-stage autofocus with 15 knots (0.076 vs 0.040, respectively). Application of MASA to clinical datasets resulted in simultaneous improvement on the delineation of both contrast-enhanced vessels and soft-tissue structures in the liver. Conclusion A new autofocus framework, MASA, was developed including a novel multi-stage technique for adaptive temporal sampling of the motion trajectory in combination with fully differentiable deep autofocus metrics. This novel adaptive sampling approach is a crucial step for application of deformable motion compensation to complex temporal motion trajectories.
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Affiliation(s)
- H Huang
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
| | - J H Siewerdsen
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
- Russell H. Morgan Department of Radiology, Johns Hopkins University, Baltimore, MD USA
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston TX USA
| | - A Lu
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
| | - Y Hu
- Department of Computer Science, Johns Hopkins University, Baltimore, MD USA
| | - W Zbijewski
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
| | - M Unberath
- Department of Computer Science, Johns Hopkins University, Baltimore, MD USA
| | - C R Weiss
- Russell H. Morgan Department of Radiology, Johns Hopkins University, Baltimore, MD USA
| | - A Sisniega
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
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Liu H, Lu A, Kelley KA, Forrest D. Noncoding Mutations in a Thyroid Hormone Receptor Gene That Impair Cone Photoreceptor Function. Endocrinology 2023; 164:6984996. [PMID: 36631163 PMCID: PMC10091487 DOI: 10.1210/endocr/bqad006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 01/04/2023] [Accepted: 01/10/2023] [Indexed: 01/13/2023]
Abstract
The function of a hormone receptor requires mechanisms to control precisely where, when, and at what level the receptor gene is expressed. An intriguing case concerns the selective induction of thyroid hormone receptor β2 (TRβ2), encoded by Thrb, in the pituitary and also in cone photoreceptors, in which it critically regulates expression of the opsin photopigments that mediate color vision. Here, we investigate the physiological significance of a candidate enhancer for induction of TRβ2 by mutagenesis of a conserved intron region in its natural context in the endogenous Thrb gene in mice. Mutation of e-box sites for bHLH (basic-helix-loop-helix) transcription factors preferentially impairs TRβ2 expression in cones whereas mutation of nearby sequences preferentially impairs expression in pituitary. A deletion encompassing all sites impairs expression in both tissues, indicating bifunctional activity. In cones, the e-box mutations disrupt chromatin acetylation, blunt the developmental induction of TRβ2, and ultimately impair cone opsin expression and sensitivity to longer wavelengths of light. These results demonstrate the necessity of studying an enhancer in its natural chromosomal context for defining biological relevance and reveal surprisingly critical nuances of level and timing of enhancer function. Our findings illustrate the influence of noncoding sequences over thyroid hormone functions.
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Affiliation(s)
- Hong Liu
- NIDDK, Laboratory of Endocrinology and Receptor Biology, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ailing Lu
- NIDDK, Laboratory of Endocrinology and Receptor Biology, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kevin A Kelley
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Douglas Forrest
- NIDDK, Laboratory of Endocrinology and Receptor Biology, National Institutes of Health, Bethesda, MD 20892, USA
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Vijayan R, Sheth N, Mekki L, Lu A, Uneri A, Sisniega A, Magaraggia J, Kleinszig G, Vogt S, Thiboutot J, Lee H, Yarmus L, Siewerdsen JH. 3D-2D image registration in the presence of soft-tissue deformation in image-guided transbronchial interventions. Phys Med Biol 2022; 68. [PMID: 36317269 DOI: 10.1088/1361-6560/ac9e3c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
Abstract
Purpose. Target localization in pulmonary interventions (e.g. transbronchial biopsy of a lung nodule) is challenged by deformable motion and may benefit from fluoroscopic overlay of the target to provide accurate guidance. We present and evaluate a 3D-2D image registration method for fluoroscopic overlay in the presence of tissue deformation using a multi-resolution/multi-scale (MRMS) framework with an objective function that drives registration primarily by soft-tissue image gradients.Methods. The MRMS method registers 3D cone-beam CT to 2D fluoroscopy without gating of respiratory phase by coarse-to-fine resampling and global-to-local rescaling about target regions-of-interest. A variation of the gradient orientation (GO) similarity metric (denotedGO') was developed to downweight bone gradients and drive registration via soft-tissue gradients. Performance was evaluated in terms of projection distance error at isocenter (PDEiso). Phantom studies determined nominal algorithm parameters and capture range. Preclinical studies used a freshly deceased, ventilated porcine specimen to evaluate performance in the presence of real tissue deformation and a broad range of 3D-2D image mismatch.Results. Nominal algorithm parameters were identified that provided robust performance over a broad range of motion (0-20 mm), including an adaptive parameter selection technique to accommodate unknown mismatch in respiratory phase. TheGO'metric yielded median PDEiso= 1.2 mm, compared to 6.2 mm for conventionalGO.Preclinical studies with real lung deformation demonstrated median PDEiso= 1.3 mm with MRMS +GO'registration, compared to 2.2 mm with a conventional transform. Runtime was 26 s and can be reduced to 2.5 s given a prior registration within ∼5 mm as initialization.Conclusions. MRMS registration via soft-tissue gradients achieved accurate fluoroscopic overlay in the presence of deformable lung motion. By driving registration via soft-tissue image gradients, the method avoided false local minima presented by bones and was robust to a wide range of motion magnitude.
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Affiliation(s)
- R Vijayan
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States of America
| | - N Sheth
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States of America
| | - L Mekki
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States of America
| | - A Lu
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States of America
| | - A Uneri
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States of America
| | - A Sisniega
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States of America
| | | | | | - S Vogt
- Siemens Healthineers, Erlangen, Germany
| | - J Thiboutot
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins Medical Institution, Baltimore, MD, United States of America
| | - H Lee
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins Medical Institution, Baltimore, MD, United States of America
| | - L Yarmus
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins Medical Institution, Baltimore, MD, United States of America
| | - J H Siewerdsen
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, United States of America.,Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
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Liu P, Lang P, Lu A, Li Y, Li X, Sun T, Yang Y, Li H, Lei T. Effect of Evolution of Carbon Structure during Torrefaction in Woody Biomass on Thermal Degradation. Int J Environ Res Public Health 2022; 19:16831. [PMID: 36554711 PMCID: PMC9778843 DOI: 10.3390/ijerph192416831] [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] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Torrefaction is an effective method for upgrading biomass. Cedar torrefaction is carried out in a fixed bed reactor at the temperature of 200-300 °C. The structural parameters are obtained from elemental analysis and 13C nuclear magnetic resonance (NMR). Thermal degradation behavior of raw and torrefied cedar is monitored by thermogravimetry analysis. The results show that carbon structure varied during torrefaction has a significant effect on thermal degradation of cedar. Some unstable oxygen functional groups, such as C1 of hemicellulose, β-O-4 linked bonds, and amorphous C6 of cellulose, are decomposed at mild torrefaction of torrefied temperature ≤ 200 °C. The temperature of maximum weight loss rate increases from 348 °C of raw cedar to 373 °C of C-200. The amorphous cellulose is partly re-crystallized at moderate torrefaction of torrefied temperature 200-250 °C. The aromaticity of torrefied cedar increases from 0.45 of C-200 to 0.73 of C-250. The covalent bond in the side chain of aromatic rings in cedar was further broken during torrefaction at severe torrefaction of torrefied temperature 250-300 °C. The area percentage of DTG mainly signed at 387 °C of C-300. The proton aromatic carbon increases from 12.35% of C-250 to 21.69% of C-300. These results will further facilitate the utilization of biomass for replacing fossil fuel to drive carbon neutrality.
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Affiliation(s)
- Peng Liu
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- Changzhou Key Laboratory of Biomass Green-Safe & High Value Utilization Technology, Changzhou 213164, China
| | - Panpan Lang
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- Changzhou Key Laboratory of Biomass Green-Safe & High Value Utilization Technology, Changzhou 213164, China
| | - Ailing Lu
- Changzhou Key Laboratory of Biomass Green-Safe & High Value Utilization Technology, Changzhou 213164, China
| | - Yanling Li
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- Changzhou Key Laboratory of Biomass Green-Safe & High Value Utilization Technology, Changzhou 213164, China
| | - Xueqin Li
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- Changzhou Key Laboratory of Biomass Green-Safe & High Value Utilization Technology, Changzhou 213164, China
| | - Tanglei Sun
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- Changzhou Key Laboratory of Biomass Green-Safe & High Value Utilization Technology, Changzhou 213164, China
| | - Yantao Yang
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- Changzhou Key Laboratory of Biomass Green-Safe & High Value Utilization Technology, Changzhou 213164, China
| | - Hui Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
| | - Tingzhou Lei
- National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Institute of Urban and Rural Mining, Changzhou University, Changzhou 213164, China
- Changzhou Key Laboratory of Biomass Green-Safe & High Value Utilization Technology, Changzhou 213164, China
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Chowdhury D, Yip HF, Lam K, Zhu H, Tai XC, Lu A. Dynamic expression of Ddc mediates the melatonin biosynthesis rhythms in the mouse: a virtual knockout approach. Sleep Med 2022. [DOI: 10.1016/j.sleep.2022.05.139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Garcia L, Jaradeh K, Ornelas-Dorian C, Lu A, Stark N, Peabody C. 262 Developing Novel Tools for Clinicians to Discuss Immigration for Resource Referral in the Emergency Department. Ann Emerg Med 2022. [DOI: 10.1016/j.annemergmed.2022.08.289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Lu A, Meng G. Reply. Arthritis Rheumatol 2022; 74:1094-1095. [PMID: 35132820 DOI: 10.1002/art.42083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 01/26/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Ailing Lu
- The Center for Microbes, Development and Health CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai Chinese Academy of Sciences and the University of Chinese Academy of Sciences, Shanghai, China
| | - Guangxun Meng
- The Center for Microbes, Development and Health CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai Chinese Academy of Sciences and the University of Chinese Academy of Sciences, Shanghai, China
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Nelson J, Lu A, Maestre J, Palmer E, Jarma D, Kinney K, Grubesic T, Kirisits M. Space-time analysis of COVID-19 cases and SARS-CoV-2 wastewater loading: A geodemographic perspective. Spat Spatiotemporal Epidemiol 2022; 42:100521. [PMID: 35934330 PMCID: PMC9142176 DOI: 10.1016/j.sste.2022.100521] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 05/24/2022] [Accepted: 05/26/2022] [Indexed: 11/05/2022]
Abstract
Severe acute respiratory syndrome - coronavirus 2 (SARS-CoV-2) continues to effect communities across the world. One way to combat these effects is to enhance our collective ability to remotely monitor community spread. Monitoring SARS-CoV-2 in wastewater is one approach that enables researchers to estimate the total number of infected people in a region; however, estimates are often made at the sewershed level which may mask the geographic nuance required for targeted interdiction efforts. In this work, we utilize an apportioning method to compare the spatial and temporal trends of daily case count with the temporal pattern of viral load in the wastewater at smaller units of analysis within Austin, TX. We find different lag-times between wastewater loading and case reports. Daily case reports for some locations follow the temporal trend of viral load more closely than others. These findings are then compared to socio-demographic characteristics across the study area.
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Sisniega A, Lu A, Huang H, Zbijewski W, Unberath M, Siewerdsen JH, Weiss CR. Targeted Deformable Motion Compensation for Vascular Interventional Cone-Beam CT Imaging. Proc SPIE Int Soc Opt Eng 2022; 12031:120311H. [PMID: 36381563 PMCID: PMC9654751 DOI: 10.1117/12.2613232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Purpose Cone-beam CT has become commonplace for 3D guidance in interventional radiology (IR), especially for vascular procedures in which identification of small vascular structures is crucial. However, its long image acquisition time poses a limit to image quality due to soft-tissue deformable motion that hampers visibility of small vessels. Autofocus motion compensation has shown promising potential for soft-tissue deformable motion compensation, but it lacks specific target to the imaging task. This work presents an approach for deformable motion compensation targeted at imaging of vascular structures. Methods The proposed method consists on a two-stage framework for: i) identification of contrast-enhanced blood vessels in 2D projection data and delineation of an approximate region covering the vascular target in the volume space, and, ii) a novel autofocus approach including a metric designed to promote the presence of vascular structures acting solely in the region of interest. The vesselness of the image is quantified via evaluation of the properties of the 3D image Hessian, yielding a vesselness filter that gives larger values to voxels candidate to be part of a tubular structure. A cost metric is designed to promote large vesselness values and spatial sparsity, as expected in regions of fine vascularity. A targeted autofocus method was designed by combining the presented metric with a conventional autofocus term acting outside of the region of interest. The resulting method was evaluated on simulated data including synthetic vascularity merged with real anatomical features obtained from MDCT data. Further evaluation was obtained in two clinical datasets obtained during TACE procedures with a robotic C-arm (Artis Zeego, Siemens Healthineers). Results The targeted vascular autofocus effectively restored the shape and contrast of the contrast-enhanced vascularity in the simulation cases, resulting in improved visibility and reduced artifacts. Segmentations performed with a single threshold value on the target vascular regions yielded a net increase of up to 42% in DICE coefficient computed against the static reference. Motion compensation in clinical datasets resulted in improved visibility of vascular structures, observed in maximum intensity projections of the contrast-enhanced liver vessel tree. Conclusion Targeted motion compensation for vascular imaging showed promising performance for increased identification of small vascular structures in presence of motion. The development of autofocus metrics and methods tailored to vascular imaging opens the way for reliable compensation of deformable motion while preserving the integrity of anatomical structures in the image.
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Affiliation(s)
- A Sisniega
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
| | - A Lu
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
| | - H Huang
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
| | - W Zbijewski
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
| | - M Unberath
- Department of Computer Science, Johns Hopkins University, Baltimore, MD USA
| | - J H Siewerdsen
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD USA
- Russell H. Morgan Department of Radiology, Johns Hopkins University, Baltimore, MD USA
| | - C R Weiss
- Russell H. Morgan Department of Radiology, Johns Hopkins University, Baltimore, MD USA
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Li HG, Zhao LH, Lu A, Liu JB, Su ZJ, Wang XB, Gao YJ. [The mechanism of circ_0023990/miR-873-5p/ANXA2 axis regulating radiosensitivity and development of thyroid carcinoma]. Zhonghua Yi Xue Za Zhi 2021; 101:3329-3337. [PMID: 34758534 DOI: 10.3760/cma.j.cn112137-20210207-00379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the effect and possible mechanism of circ_0023990 on the radiosensitivity of thyroid cancer cells. Methods: qRT-PCR was used to detect the expression of circ_0023990 in the cancer tissues of 55 patients with thyroid cancer and thyroid cancer cell lines (TPC-1, KTC-1, FTC-133 and CAL-62), and the relationship between the expression of circ_0023990 in cancer tissues and the clinical characteristics of the patients were analyzed. Thyroid cancer cells TPC-1 and KTC-1 were divided into sh-circ_0023990 group, sh-NC group, sh-circ_0023990+anti-miR-873-5p group, sh-circ_0023990+anti-miR-NC group, miR-873-5p group, miR-NC group, miR-873-5p+pcDNA-ANXA2 group and miR-873-5p+pcDNA group, and then clone formation experiment was used to detect cell radiosensitivity. After each group of cells was irradiated with 4Gy radiation, the expression of γH2AX protein in the cells was detected by Western Blot. The dual luciferase reporter gene experiment verified the targeting relationship between circ_0023990 and miR-873-5p or miR-873-5p and ANXA2. Results: The expression of circ_0023990 in thyroid cancer tissues was higher than that in normal tissues (2.15±0.09 vs. 0.97±0.05, P<0.05), and its expression was closely related to tumor size, lymph node metastasis and TNM staging of patients with thyroid cancer (P<0.05). The expression of circ_0023990 in thyroid cancer cell lines (TPC-1, KTC-1, FTC-133 and CAL-62) were higher than that of normal thyroid cells HTori-3 (3.16±0.38, 2.63±0.28, 1.82±0.24, 1.71±0.22 vs. 1.00±0.10, all P<0.05). The survival scores of TPC-1 and KTC-1 cells in the sh-circ_0023990 group were significantly lower than those in the sh-NC group (P<0.05), and the sensitization ratios were 2.482, 1.643; The survival scores of TPC-1 and KTC-1 cells in the sh-circ_0023990+anti-miR-873-5p group were higher than those in the sh-circ_0023990+anti-miR-NC group (P<0.05), and the sensitization ratios were 0.305, 0.441, respectively. The survival scores of TPC-1 and KTC-1 cells in the miR-873-5p group were lower than those in the miR-NC group (P<0.05), and the sensitization ratios were 2.044, 1.653 respectively. The survival scores of TPC-1 and KTC-1 cells in the miR-873-5p+pcDNA-ANXA2 group was higher than that in the miR-873-5p+pcDNA group (P<0.05), and the sensitization ratios were 0.496, 0.686, respectively. The expression of γH2AX protein in TPC-1 and KTC-1 cells of the 4 Gy+sh-circ_0023990 group were higher than that in the 4 Gy+sh-NC group (2.68±0.27 vs. 1.87±0.25, 2.46±0.19 vs. 1.77±0.14; all P<0.05), but the expression of γH2AX protein in TPC-1 and KTC-1 cells of the 4 Gy+sh-circ_0023990+anti-miR-873-5p group were lower than that in the 4 Gy+sh-circ_0023990+anti-miR-NC group (1.13±0.09 vs. 1.69±0.09, 1.11±0.08 vs. 1.60±0.08; both P<0.05). The expression of γH2AX protein in TPC-1 and KTC-1 cells in the 4 Gy+miR-873-5p group were higher than that in the 4 Gy+miR-NC group (2.35±0.16 vs. 1.84±0.14, 2.26±0.12 vs. 1.77±0.13; both P<0.05), but the expression of γH2AX protein in TPC-1 and KTC-1 cells of the 4 Gy+miR-873-5p+pcDNA-ANXA2 group were lower than that in the 4 Gy+miR-873-5p+pcDNA group (1.96±0.12 vs. 2.41±0.12, 1.92±0.07 vs. 2.28±0.12; both P<0.05). circ_0023990 targeted the negative regulation of miR-873-5p, and ANXA2 was the target gene of miR-873-5p. Conclusion: circ_0023990 was highly expressed in thyroid cancer tissues and cell lines, and it may promote the radiotherapy resistance of thyroid cancer cells in vivo through regulating miR-873-5p/ANXA2 axis.
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Affiliation(s)
- H G Li
- Department of Thyroid Surgery,Henan Provincial People's Hospital, Zhengzhou, 450003, China
| | - L H Zhao
- Department of Disinfection Supply Center,Fuwai Central China Cardiovascular Hospital, Zhengzhou, 450003, China
| | - A Lu
- Department of Thyroid Surgery,Henan Provincial People's Hospital, Zhengzhou, 450003, China
| | - J B Liu
- Department of Radiotherapy,Henan Provincial People's Hospital, Zhengzhou, 450003, China
| | - Z J Su
- Department of Thyroid Surgery,Henan Provincial People's Hospital, Zhengzhou, 450003, China
| | - X B Wang
- Department of Nuclear Medicine,Henan Provincial People's Hospital, Zhengzhou, 450003, China
| | - Y J Gao
- Department of Nuclear Medicine,Henan Provincial People's Hospital, Zhengzhou, 450003, China
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Zakharevich M, Kippenhan M, Lu A, Mark Courtney D, McCarthy D, Kim H. 238 Antibiotic and Opioid Antitussive Prescribing Among Urgent Care and Emergency Department Visits for Respiratory Diagnoses. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.09.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Grade M, Stark N, Emanuels D, Lu A, Leung S, Peabody C. 13 Impact of an Electronic Decision Tool for Social Resources upon Discharge. Ann Emerg Med 2021. [DOI: 10.1016/j.annemergmed.2021.09.021] [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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23
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Orandi BJ, Li G, Dhall D, Bajpai P, Manne U, Arora N, Lu A, Coronado AC, Kassel R, Pinninti S, Lewis CE, Chapleau C, Locke JE, Gutierrez Sanchez LH. Acute Liver Failure in a Healthy Young Female With COVID-19. JPGN Rep 2021; 2:e108. [PMID: 37205955 PMCID: PMC10191572 DOI: 10.1097/pg9.0000000000000108] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/09/2021] [Indexed: 05/21/2023]
Abstract
Several well-described manifestations of infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have been reported. Among them, a transient elevation of liver enzymes is the typical presentation of coronavirus disease 2019 (COVID-19) liver-related injury. The mechanism of liver involvement is likely a combination of viral injury and immune-mediated inflammation. In contrast, acute liver failure in the setting of COVID-19 has rarely been reported. Herein, we report a case of pediatric acute liver failure in a previously healthy female adolescent infected with SARS-CoV-2 with biopsy evidence of replicating virus in hepatocytes, which has not been previously reported.
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Affiliation(s)
- Babak John Orandi
- From the Department of Surgery, University of Alabama at Birmingham, Birmingham, AL
| | - Geling Li
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL
| | - Deepti Dhall
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL
| | - Prachi Bajpai
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL
| | - Upender Manne
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL
| | - Nitin Arora
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL
| | - Ailing Lu
- Division of Neonatology, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL
| | - Ana Carolina Coronado
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL
| | - Rachel Kassel
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL
| | - Swetha Pinninti
- Division of Pediatric Infectious Diseases, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL
| | | | | | | | - Luz Helena Gutierrez Sanchez
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL
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Lu A, Wu S, Niu J, Cui M, Chen M, Clapp WL, Barnes BJ, Meng G. Aim2 Couples With Ube2i for Sumoylation-Mediated Repression of Interferon Signatures in Systemic Lupus Erythematosus. Arthritis Rheumatol 2021; 73:1467-1477. [PMID: 33559374 DOI: 10.1002/art.41677] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 02/02/2021] [Indexed: 12/29/2022]
Abstract
OBJECTIVE Systemic lupus erythematosus (SLE) involves kidney damage, and the inflammasome-caspase-1 axis has been demonstrated to promote renal pathogenesis. The present study was designed to explore the function of the Absent in Melanoma 2 (Aim2) protein in SLE. METHODS Female wild-type Aim2-/- , Aim2-/- Ifnar1-/- , Aim2-/- Rag1-/- , and Asc-/- mice ages 8-10 weeks received 1 intraperitoneal injection of 500 μl pristane or saline, and survival of mice was monitored twice a week for 6 months. RESULTS The absence of Aim2, but not Asc, led to enhanced SLE in mice that received pristane treatment. Increased immune cell infiltration and type I interferon (IFN) signatures in the kidneys of Aim2-/- mice coincided with severity of lupus, which was alleviated by blockade of Ifnar1-mediated signal. Adaptive immune cells were also involved in the glomerular lesions of Aim2-/- mice after pristane challenge. Importantly, even in the absence of pristane, plasmacytoid dendritic cells in the kidneys of Aim2-/- mice were significantly increased compared to control animals. Accordingly, transcriptome analysis revealed that Aim2 deficiency led to enhanced expression of type I IFN-induced genes in the kidneys even at an early developmental stage. Mechanistically, Aim2 bound ubiquitin-conjugating enzyme 2i (Ube2i), which mediates sumoylation-based suppression of type I IFN expression deficiency of Aim2 decreased cellular sumoylation, resulting in an augmented type I IFN signature and kidney pathogenesis. CONCLUSION The present study demonstrates a critical role for Aim2 in an optimal Ube2i-mediated sumoylation-based suppression of type I IFN generation and development of SLE. As such, the Aim2-Ube2i axis can thus be a novel target for intervention in SLE.
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Affiliation(s)
- Ailing Lu
- Center for Microbes, Development and Health, Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, University of Chinese Academy of Sciences, Shanghai, China, and Center for Autoimmune Musculoskeletal and Hemaopoietic Diseases, Feinstein Institutes for Medical Research, Manhasset, New York
| | - Shuxian Wu
- Center for Microbes, Development and Health, Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, University of Chinese Academy of Sciences, Shanghai, China, and The Joint Center for Infection and Immunity, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, China
| | - Junling Niu
- Center for Microbes, Development and Health, Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, and the University of Chinese Academy of Sciences, Shanghai, China
| | - Mengmeng Cui
- Center for Microbes, Development and Health, Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, and the University of Chinese Academy of Sciences, Shanghai, China
| | - Mengdan Chen
- Center for Microbes, Development and Health, Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, and the University of Chinese Academy of Sciences, Shanghai, China
| | - William L Clapp
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville
| | - Betsy J Barnes
- Center for Autoimmune Musculoskeletal and Hematopoietic Disease, Feinstein Institutes for Medical Research, Manhasset, New York, and the Hofstra-Northwell Zucker School of Medicine, Hempstead, New York
| | - Guangxun Meng
- Center for Microbes, Development, and Health, Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China, The Joint Center for Infection and Immunity, Guangzhou Institute of Pediatrics, Guangzhou Women and Children's Medical Center, Guangzhou, China, and Pasteurien College, Soochow University, Suzhou, China
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25
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Lu A, Pallero MA, Owusu BY, Borovjagin AV, Lei W, Sanders PW, Murphy-Ullrich JE. Calreticulin is important for the development of renal fibrosis and dysfunction in diabetic nephropathy. Matrix Biol Plus 2020; 8:100034. [PMID: 33543033 PMCID: PMC7852315 DOI: 10.1016/j.mbplus.2020.100034] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 03/13/2020] [Accepted: 03/20/2020] [Indexed: 12/14/2022] Open
Abstract
Previously, our lab showed that the endoplasmic reticulum (ER) and calcium regulatory protein, calreticulin (CRT), is important for collagen transcription, secretion, and assembly into the extracellular matrix (ECM) and that ER CRT is critical for TGF-β stimulation of type I collagen transcription through stimulation of ER calcium release and NFAT activation. Diabetes is the leading cause of end stage renal disease. TGF-β is a key factor in the pathogenesis of diabetic nephropathy. However, the role of calreticulin (Calr) in fibrosis of diabetic nephropathy has not been investigated. In current work, we used both in vitro and in vivo approaches to assess the role of ER CRT in TGF-β and glucose stimulated ECM production by renal tubule cells and in diabetic mice. Knockdown of CALR by siRNA in a human proximal tubular cell line (HK-2) showed reduced induction of soluble collagen when stimulated by TGF-β or high glucose as compared to control cells, as well as a reduction in fibronectin and collagen IV transcript levels. CRT protein is increased in kidneys of mice made diabetic with streptozotocin and subjected to uninephrectomy to accelerate renal tubular injury as compared to controls. We used renal-targeted ultrasound delivery of Cre-recombinase plasmid to knockdown specifically CRT expression in the remaining kidney of uninephrectomized Calr fl/fl mice with streptozotocin-induced diabetes. This approach reduced CRT expression in the kidney, primarily in the tubular epithelium, by 30-55%, which persisted over the course of the studies. Renal function as measured by the urinary albumin/creatinine ratio was improved in the mice with knockdown of CRT as compared to diabetic mice injected with saline or subjected to ultrasound and injected with control GFP plasmid. PAS staining of kidneys and immunohistochemical analyses of collagen types I and IV show reduced glomerular and tubulointerstitial fibrosis. Renal sections from diabetic mice with CRT knockdown showed reduced nuclear NFAT in renal tubules and treatment of diabetic mice with 11R-VIVIT, an NFAT inhibitor, reduced proteinuria and renal fibrosis. These studies identify ER CRT as an important regulator of TGF-β stimulated ECM production in the diabetic kidney, potentially through regulation of NFAT-dependent ECM transcription.
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Key Words
- 4-PBA, 4-phenylbutyrate
- CRT, calreticulin
- Calreticulin
- Collagen
- Diabetic nephropathy
- ECM, extracellular matrix
- EMT, epithelial to mesenchymal transition
- ER, endoplasmic reticulum
- Fibrosis
- GRP78, glucose related protein 78
- MB/US, microbubble/ultrasound
- NFAT
- NFAT, nuclear factor of activated T cells
- PAS, Periodic Acid-Schiff
- STZ, streptozotocin
- TGF-β, transforming growth factor-β
- UPR, unfolded protein response
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Affiliation(s)
- Ailing Lu
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Manuel A. Pallero
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Benjamin Y. Owusu
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Anton V. Borovjagin
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Weiqi Lei
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL35294-0019, USA
| | - Paul W. Sanders
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35294-0019, USA
- Department of Veterans Affairs Medical Center, Birmingham, AL 35233, USA
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Lu A, Gunzburger E, Glorioso T, Smith W, Whooley M, Ho M. Impact of Longitudinal Virtual Primary Care on Diabetes Quality of Care. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- A. Lu
- San Francisco Veterans Affairs Health Care System San Francisco CA United States
- University of California San Francisco San Francisco CA United States
| | - E. Gunzburger
- VA Eastern Colorado Health Care System Aurora CO United States
| | - T. Glorioso
- Denver‐Seattle Center of Innovation (COIN) Denver CO United States
| | - W. Smith
- San Francisco Veterans Affairs Health Care System San Francisco CA United States
- University of California San Francisco San Francisco CA United States
| | - M. Whooley
- San Francisco Veterans Affairs Health Care System San Francisco CA United States
- University of California San Francisco San Francisco CA United States
| | - M. Ho
- University of Colorado Hospital Denver CO United States
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Abstract
Zero TE MR imaging is a novel technique that achieves a near-zero time interval between radiofrequency excitation and data acquisition, enabling visualization of short-T2 materials such as cortical bone. Zero TE offers a promising radiation-free alternative to CT with rapid, high-resolution, silent, and artifact-resistant imaging, as well as the potential for "pseudoCT" reconstructions. In this report, we will discuss our preliminary experience with zero TE, including technical principles and a clinical case series demonstrating emerging applications in neuroradiology.
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Affiliation(s)
- A Lu
- Department of Medical Physics (A.L., K.R.G.), Mayo Clinic, Rochester, Minnesota
| | - K R Gorny
- Department of Medical Physics (A.L., K.R.G.), Mayo Clinic, Rochester, Minnesota
| | - M-L Ho
- From the Department of Radiology, Nationwide Children's Hospital (M.-L.H.), The Ohio State University College of Medicine, Columbus, Ohio
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28
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Brune Z, Rice M, Matta B, Lu A, Barnes BJ. In vivo mechanisms by which Irf5 regulates BCR-, TCR- and TLR-induced plasma cell generation and antibody secretion. The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.71.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Generation of antibody secreting cells (ASCs) requires multiple B cell activation pathways, including B cell receptor (BCR), T cell receptor (TCR), and Toll-like receptors (TLRs). In human naïve B cells, we reported that knockdown of interferon regulatory factor 5 (IRF5) resulted in IgD retention, reduced proliferation and plasma cell differentiation, and reduced IgG secretion. Defects were due to early impairments in B cell activation and clonal expansion. Conversely, murine Irf5 was reported to regulate antibody production through direct control of class switch recombination (CSR) at the γ2a locus. To further elucidate distinct and overlapping roles between human and murine IRF5 in the regulation of plasma cell differentiation and antibody production, we performed in vivo analysis of B and T cell differentiation and function in wild-type (wt) and Irf5 knockout (ko) littermate mice after immunization. B and T cell subsets were analyzed by multi-color flow cytometry. Naïve B cells were in vitro differentiated to ASCs with CpG-B, anti-IgM, anti-CD40 and IL-21. Kinetics of B cell activation, AID expression and IgG production were determined. BCR and TCR signaling were examined by phospho-flow. A combination of T-dependent/independent and TLR-dependent/independent immunizations were used to study ASC differentiation. RAG−/− mice were used to determine cell type-specific effects. Results indicate distinct roles for human and murine IRF5 at the early stages of BCR signaling and redundant roles at the later stages of CSR, plasma cell differentiation and antibody secretion via regulation of AID.
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Affiliation(s)
| | | | | | - Ailing Lu
- 1The Feinstein Institutes for Medical Research
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29
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Murphy-Ullrich JE, Lu A, Lei W, Suto MJ. TGF‐beta Regulation by the Matricellular Protein Thrombospondin 1. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.00144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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30
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Chowdhury D, Wang C, Lu A, Zhu H. Quantitatively decoding the circadian transcriptional regulations: an advanced approach in sleep medicine. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Chen Y, Wang H, Shen J, Deng R, Yao X, Guo Q, Lu A, Sun B, Zhang Y, Meng G. Gasdermin D Drives the Nonexosomal Secretion of Galectin-3, an Insulin Signal Antagonist. J I 2019; 203:2712-2723. [DOI: 10.4049/jimmunol.1900212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 09/17/2019] [Indexed: 12/14/2022]
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32
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Liang W, Lu A, Chu C, Wang J, Davis D, Liang W. REGULATION OF VOLTAGE-GATED SODIUM CURRENT BY WNT SIGNALLING IN HEALTHY AND BRUGADA SYNDROME HUMAN CARDIOMYOCYTES. Can J Cardiol 2019. [DOI: 10.1016/j.cjca.2019.07.303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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33
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Wu Z, Zhong M, Li M, Huang H, Liao J, Lu A, Guo K, Ma N, Lin J, Duan J, Liu L, Xu F, Zhong Z, Chen J. Mutation Analysis of Pre-mRNA Splicing Genes PRPF31, PRPF8, and SNRNP200 in Chinese Families with Autosomal Dominant Retinitis Pigmentosa. Curr Mol Med 2019; 18:287-294. [PMID: 30360737 DOI: 10.2174/1566524018666181024160452] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 08/04/2018] [Revised: 09/28/2018] [Accepted: 09/28/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND To screen variants in pre-mRNA Splicing genes in 95 Chinese autosomal dominant retinitis pigmentosa (adRP) families. METHODS Clinical examination and pedigree analysis were performed. Targeted exome sequencing (TES) and / or Sanger sequencing were performed to detect the variants in genes of Splicing factors and conduct intra-familiar segregation analysis with DNA available. In silico analysis was performed to predict pathogenicity of variants in protein level and in vitro splicing assays were performed to compare splicing variants with their corresponding wildtype about their splicing effect. RESULTS In this study, total nine different variants were identified in PRPF31, SNRNP200, and PRPF8 respectively, including six PRPF31 variants [five novel variants 322+1G>A, c.527+2T>G, c.590T>C(p.Leu197Pro), c.1035_1036insGC (p.Pro346Argfs X18), and c.1224dupG (p.Gln409AlafsX66) plus one reported variant c.1060C>T (p.Arg354X)], a recurrent PRPF8 variant c.6930G>T (p.Arg2310Ser), two SNRNP200 variants [one heterozygous and homozygous SNRNP200 recurrent variant c.3260G>A (p.Ser1087Leu), and a reported heterozygous c.2042G>A(p.Arg681His)]. In family 20009, incomplete penetrance was observed. A novel PRPF31 missense variant c.590T>C (p.Leu197Pro) was predicted to be pathogenic in protein level via in silico analysis and in vitro splicing assay demonstrated that two novel splicing PRPF31 variants c.322+1G>A and c.527+2T>G affect splicing compared with the wildtype. CONCLUSIONS In our studies, RP-causing variants of pre-mRNA Splicing genes (PRPF31, PRPF8 and SNRNP200) were identified in nine of the ninety-five adRP families respectively, which extend the spectra of RP variant and phenotype. And we provide the first example that SNRNP200-related RP can be caused by both heterozygous and homozygous variants of this gene.
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Affiliation(s)
- Z Wu
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Medical Genetics, Tongji University School of Medicine, Shanghai, China
| | - M Zhong
- Department of Ophthalmology of Pingxiang People's Hospital, Pingxiang, Jiangxi, China
| | - M Li
- Department of Ophthalmology of The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - H Huang
- Department of Ophthalmology of The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - J Liao
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Medical Genetics, Tongji University School of Medicine, Shanghai, China
| | - A Lu
- Department of Bioinformatics, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - K Guo
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Medical Genetics, Tongji University School of Medicine, Shanghai, China
| | - N Ma
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Medical Genetics, Tongji University School of Medicine, Shanghai, China
| | - J Lin
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Medical Genetics, Tongji University School of Medicine, Shanghai, China
| | - J Duan
- Maternity and Child Health Care Hospital, Jiujiang, Jiangxi Province, China
| | - L Liu
- Department of Ophthalmology of The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - F Xu
- Department of Ophthalmology of The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Z Zhong
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Medical Genetics, Tongji University School of Medicine, Shanghai, China
| | - J Chen
- Department of Ophthalmology of Shanghai Tenth People's Hospital, and Tongji Eye Institute, Tongji University School of Medicine, Shanghai, China.,Department of Medical Genetics, Tongji University School of Medicine, Shanghai, China
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Li Z, Yao F, Xue G, Xu Y, Niu J, Cui M, Wang H, Wu S, Lu A, Zhong J, Meng G. Antiviral effects of simeprevir on multiple viruses. Antiviral Res 2019; 172:104607. [PMID: 31563599 DOI: 10.1016/j.antiviral.2019.104607] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/05/2019] [Accepted: 09/17/2019] [Indexed: 12/15/2022]
Abstract
Simeprevir was developed as a small molecular drug targeting the NS3/4A protease of hepatitis C virus (HCV). Unexpectedly, our current work discovered that Simeprevir effectively promoted the transcription of IFN-β and ISG15, inhibited the infection of host cells by multiple viruses including Zika virus (ZIKV), Enterovirus A71 (EV-A71), as well as herpes simplex virus type 1 (HSV-1). However, the inhibitory effects of Simeprevir on ZIKV, EV-A71 and HSV-1 were independent from IFN-β and ISG15. This study thus demonstrates that the application of Simeprevir can be extended to other viruses besides HCV.
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Affiliation(s)
- Zheng Li
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Fujia Yao
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Guang Xue
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Yongfen Xu
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Junling Niu
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Mengmeng Cui
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Hongbin Wang
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Shuxian Wu
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Ailing Lu
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China; Faculty of Medical Laboratory Science, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, 200025, China
| | - Jin Zhong
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China
| | - Guangxun Meng
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, 200031, China; University of Chinese Academy of Sciences, Beijing, 100039, China.
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VASQUEZ C, Lu A. MON-285 BROWN TUMOR IN A DIALYSIS PATIENT WHO RESPONDED TO PARATHYROIDECTOMY: A CASE REPORT. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.1091] [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: 10/26/2022] Open
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36
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Lu J, Zhao J, Jia C, Zhou L, Cai Y, Ni J, Ma J, Zheng M, Lu A. FPR2 enhances colorectal cancer progression by promoting EMT process. Neoplasma 2019; 66:785-791. [PMID: 31288528 DOI: 10.4149/neo_2018_181123n890] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 05/02/2019] [Indexed: 11/08/2022]
Abstract
Formyl peptide receptor-2 (FPR2) has been shown to promote various tumors, but its role in colorectal cancer (CRC) has not been clearly illuminated. The aim of this study was to investigate the effect of FPR2 interference on cell proliferation, migration, invasion, apoptosis, pro-angiogenesis of CRC cells, and also the mechanisms involved. Quantitative PCR assays were applied to assess the expression levels of FPR2 in CRC tissues. CRC cell line SW1116 was chosen to perform this study. We knocked down FPR2 gene by sh-RNA. Then, the cell proliferation was assayed by soft agar colony formation assay, the cell migration capacity was checked by wound healing assay, and cell invasion ability was detected by transwell assay. In addition, flow cytometric analysis was used to detect apoptosis, while endothelial tube formation assay was used to evaluate the effects of FPR2 on pro-angiogenesis in vitro. Tumorigenesis experiment in vivo was performed in nude mice. EMT-related proteins were studied by western blotting. Quantitative PCR demonstrated that FPR2 mRNA was highly expressed in the colorectal cancer tissues. SW1116 cells' capacities of proliferation, migration, invasion, anti-apoptosis and pro-angiogenesis were distinctly suppressed after silencing FPR2 in SW1116 by sh-RNA. Suppression FPR2 mRNA in SW1116 cells suppressed tumorigenicity in nude mice. The expression of proteins related to epithelial-mesenchymal transition (EMT) such as E-cadherin, N-cadherin, Snail, Slug and vimentin was changed after suppressing FPR2. In conclusion, our study demonstrated that FPR2 could promote CRC cells progression in vitro and in vivo that may relate to promoting EMT.
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Affiliation(s)
- J Lu
- Department of General Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - J Zhao
- Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - C Jia
- Department of General Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - L Zhou
- Department of General Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - Y Cai
- Department of General Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - J Ni
- Department of General Surgery, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, China
| | - J Ma
- Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - M Zheng
- Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - A Lu
- Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Cao M, Long M, Chen Q, Lu Y, Luo Q, Zhao Y, Lu A, Ge C, Zhu L, Chen Z. Development of β-elemene and Cisplatin Co-Loaded Liposomes for Effective Lung Cancer Therapy and Evaluation in Patient-Derived Tumor Xenografts. Pharm Res 2019; 36:121. [PMID: 31214786 DOI: 10.1007/s11095-019-2656-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/09/2019] [Indexed: 12/26/2022]
Abstract
PURPOSE β-elemene and cisplatin combined chemotherapy currently is one of the most important settings available for lung cancer therapy in China. However, the clinical outcome is limited by their pharmacokinetic drawbacks. On the other hand, most of nanomedicines have failed in clinical development due to the huge differences between heterogeneous clinical tumor tissues and homogenous cell-derived xenografts. In this work, we fabricated a β-elemene and cisplatin co-loaded liposomal system to effectively treat lung cancer. METHOD In vitro cytotoxicity of co-loaded liposomes was studied by MTT, trypan and Hoechst/PI staining, and western blot in A549, A549/DDP, and LCC cells. In vivo antitumor efficacy was evaluated in cell-derived and clinically relevant patient-derived xenografts. RESULTS Co-loaded liposomes were more cytotoxic to cancer cells, especially than the combination of single-loaded liposomes, benefiting from their simultaneous drug internalization and release. As a result, they exhibited desirable therapeutic outcome in both cell-derived and patient-derived xenografts. CONCLUSION β-elemene and cisplatin co-loaded liposomes are a clinically promising candidate for effective lung cancer therapy.
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Affiliation(s)
- Mingxiang Cao
- Institute of Special Environmental Medicine, Nantong University, Nantong, People's Republic of China
| | - Mengmeng Long
- Institute of Special Environmental Medicine, Nantong University, Nantong, People's Republic of China
| | - Qiuping Chen
- Department of Anesthesiology, Affiliated Hospital of Nantong University, Nantong, People's Republic of China
| | - Yapeng Lu
- Institute of Special Environmental Medicine, Nantong University, Nantong, People's Republic of China
| | - Qianqian Luo
- Institute of Special Environmental Medicine, Nantong University, Nantong, People's Republic of China
| | - Yue Zhao
- Institute of Special Environmental Medicine, Nantong University, Nantong, People's Republic of China
| | - Ailing Lu
- Institute of Special Environmental Medicine, Nantong University, Nantong, People's Republic of China
| | - Cunwang Ge
- Institute of Special Environmental Medicine, Nantong University, Nantong, People's Republic of China
| | - Li Zhu
- Institute of Special Environmental Medicine, Nantong University, Nantong, People's Republic of China
| | - Zhongping Chen
- Institute of Special Environmental Medicine, Nantong University, Nantong, People's Republic of China. .,Pharmaceutical Sciences Division, School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin, USA.
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Niu J, Wu S, Chen M, Xu K, Guo Q, Lu A, Zhao L, Sun B, Meng G. Hyperactivation of the NLRP3 inflammasome protects mice against influenza A virus infection via IL-1β mediated neutrophil recruitment. Cytokine 2019; 120:115-124. [PMID: 31055218 DOI: 10.1016/j.cyto.2019.04.019] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/18/2019] [Accepted: 04/27/2019] [Indexed: 12/28/2022]
Abstract
Host innate immune system is critical for combating invading microbes including Influenza A virus (IAV). As an important arm of the innate immunity, the NLRP3 inflammasome has been found essential for protecting host against IAV challenge, while the mechanism remained elusive. Here we found that mice carrying a gain-of-function mutation in the Nlrp3 gene (Nlrp3R258W) are strongly resistant to IAV infection. Upon H1N1 IAV infection, the Nlrp3R258W mice exhibited decreased weight loss, increased survival rate and attenuated lung damage compared with WT littermate controls. Mechanistically, the resistance of Nlrp3R258W mice to IAV infection was dependent on IL-1β-mediated neutrophil recruitment. Upon IAV infection, mice carrying the Nlrp3R258W mutation produced more IL-1β than WT mice in the lung, which enhanced neutrophil recruitment locally. The recruited neutrophils facilitated IAV clearance, so that the viral load in Nlrp3R258W mice was lower than that in control mice. Conversely, neutrophil depletion in Nlrp3R258W mice compromised IAV clearance. Taken together, our results demonstrate a previously undescribed mechanism by which hyperactivation of the NLRP3 Inflammasome protects mice from IAV infection through IL-1β mediated neutrophil recruitment, thus suggest that positively fine tuning the physiological function of NLRP3 inflammasome can be beneficial for a mammalian host against IAV challenge.
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Affiliation(s)
- Junling Niu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China; CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Shuxian Wu
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Mingkuan Chen
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Ke Xu
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Qiuhong Guo
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Ailing Lu
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Liping Zhao
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bing Sun
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100039, China
| | - Guangxun Meng
- CAS Key Laboratory of Molecular Virology & Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100039, China.
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Levine M, Lu A, Quach A, Chen B, Baccarelli A, Whitsel E, Ferrucci L, Horvath S. AN EPIGENETIC CLOCK FOR AGING AND LIFE EXPECTANCY. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Levine
- Yale School of Medicine, New Haven, Connecticut, United States
| | - A Lu
- Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - A Quach
- Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - B Chen
- LIFE Epigenetics, Los Angeles, CA, USA
| | - A Baccarelli
- Laboratory of Environmental Epigenetics, Departments of Environmental Health Sciences Epidemiology, Columbia University Mailman School of Public Health, New York, NY, USA
| | - E Whitsel
- Dept. of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - L Ferrucci
- Longitudinal Studies Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, USA. Baltimore, MD, USA
| | - S Horvath
- Department of Human Genetics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
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Lu A, Adamo M, Warren O. 271EMF Understanding High Utilization of the Emergency Department: An Interview Study. Ann Emerg Med 2018. [DOI: 10.1016/j.annemergmed.2018.08.276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Tan L, Jiang W, Lu A, Cai H, Kong L. miR-155 Aggravates Liver Ischemia/reperfusion Injury by Suppressing SOCS1 in Mice. Transplant Proc 2018; 50:3831-3839. [PMID: 30577275 DOI: 10.1016/j.transproceed.2018.08.060] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Accepted: 08/16/2018] [Indexed: 01/23/2023]
Abstract
Liver ischemia/reperfusion injury (IRI) occurs during partial liver resection and liver transplantation. Activation of Toll-like receptors (TLRs) is a key event triggered by a range of proinflammatory cytokines during liver I/R. Although it has been reported that miR-155 takes part in both innate and adaptive immune responses, the potential role of miR-155 in liver IRI remains unknown. In this study, we found that expression of miR-155 was upregulated during liver I/R by many inflammatory cytokines, and forced expression of miR-155 aggravated hepatocyte injury following liver I/R both in vivo and in vitro. Mice transfected with Ago-miR-155-a chemically modified miR-155-showed enhanced liver severity compared to those transfected with negative control miRNA by inhibiting the expression of SOCS1, the target of miR-155. Thus by the inhibition of SOCS1, the overexpression of miR-155 promoted activation of NF-κB, and elevating the production of proinflammatory cytokines, such TNF-α and IL-6. In conclusion, miR-155 aggravates liver I/R injury in vivo and hepatocyte hypoxia/reoxygenation injury by suppressing the expression of SOCS1.
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Affiliation(s)
- L Tan
- Surgical Intensive Care Unit, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - W Jiang
- Department of Neonatal Surgery, Nanjing Children's Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - A Lu
- Surgical Intensive Care Unit, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - H Cai
- Surgical Intensive Care Unit, The First Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou, China
| | - L Kong
- Liver Transplantation Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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Wang H, Li Z, Niu J, Xu Y, Ma L, Lu A, Wang X, Qian Z, Huang Z, Jin X, Leng Q, Wang J, Zhong J, Sun B, Meng G. Antiviral effects of ferric ammonium citrate. Cell Discov 2018; 4:14. [PMID: 29619244 PMCID: PMC5871618 DOI: 10.1038/s41421-018-0013-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 01/02/2018] [Indexed: 12/13/2022] Open
Abstract
Iron is an essential nutrient for cell survival and is crucial for DNA replication, mitochondrial function and erythropoiesis. However, the immunological role of iron in viral infections has not been well defined. Here we found the iron salt ferric ammonium citrate (FAC) inhibited Influenza A virus, HIV virus, Zika virus, and Enterovirus 71 (EV71) infections. Of note, both iron ion and citrate ion were required for the antiviral capability of FAC, as other iron salts and citrates did not exhibit viral inhibition. Mechanistically, FAC inhibited viral infection through inducing viral fusion and blocking endosomal viral release. These were further evidenced by the fact that FAC induced liposome aggregation and intracellular vesicle fusion, which was associated with a unique iron-dependent cell death. Our results demonstrate a novel antiviral function of FAC and suggest a therapeutic potential for iron in the control of viral infections.
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Affiliation(s)
- Hongbin Wang
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Zheng Li
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Junling Niu
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Yongfen Xu
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Li Ma
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Ailing Lu
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Xun Wang
- 2Shanghai Blood Center, 200051 Shanghai, China
| | - Zhikang Qian
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Zhong Huang
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Xia Jin
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Qibin Leng
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Jianhua Wang
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Jin Zhong
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Bing Sun
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Guangxun Meng
- 1CAS Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, 200031 Shanghai, China
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Yao X, Zhang C, Xing Y, Xue G, Zhang Q, Pan F, Wu G, Hu Y, Guo Q, Lu A, Zhang X, Zhou R, Tian Z, Zeng B, Wei H, Strober W, Zhao L, Meng G. Remodelling of the gut microbiota by hyperactive NLRP3 induces regulatory T cells to maintain homeostasis. Nat Commun 2017; 8:1896. [PMID: 29196621 PMCID: PMC5711854 DOI: 10.1038/s41467-017-01917-2] [Citation(s) in RCA: 125] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 10/25/2017] [Indexed: 12/16/2022] Open
Abstract
Inflammasomes are involved in gut homeostasis and inflammatory pathologies, but the role of NLRP3 inflammasome in these processes is not well understood. Cryopyrin-associated periodic syndrome (CAPS) patients with NLRP3 mutations have autoinflammation in skin, joints, and eyes, but not in the intestine. Here we show that the intestines of CAPS model mice carrying an Nlrp3R258W mutation maintain homeostasis in the gut. Additionally, such mice are strongly resistant to experimental colitis and colorectal cancer; this is mainly through a remodelled gut microbiota with enhanced anti-inflammatory capacity due to increased induction of regulatory T cells (Tregs). Mechanistically, NLRP3R258W functions exclusively in the lamina propria mononuclear phagocytes to directly enhance IL-1β but not IL-18 secretion. Increased IL-1β boosts local antimicrobial peptides to facilitate microbiota remodelling. Our data show that NLRP3R258W-induced remodelling of the gut microbiota, induces local Tregs to maintain homeostasis and compensate for otherwise-detrimental intestinal inflammation. Inflammasomes are involved in gut homeostasis and inflammatory pathologies. The authors show that a hyperactive NLRP3 inflammasome maintains gut homeostasis through remodelling of the gut microbiota and induction of regulatory T cells.
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Affiliation(s)
- Xiaomin Yao
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Chenhong Zhang
- State Key Laboratory of Microbial Metabolism, Department of Biological Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yue Xing
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Guang Xue
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Qianpeng Zhang
- State Key Laboratory of Microbial Metabolism, Department of Biological Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Fengwei Pan
- State Key Laboratory of Microbial Metabolism, Department of Biological Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Guojun Wu
- State Key Laboratory of Microbial Metabolism, Department of Biological Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yingxin Hu
- State Key Laboratory of Microbial Metabolism, Department of Biological Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Qiuhong Guo
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Ailing Lu
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Xiaoming Zhang
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai, 200031, China
| | - Rongbin Zhou
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Zhigang Tian
- Department of Immunology, School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, 230027, China
| | - Benhua Zeng
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, 400038, China
| | - Hong Wei
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing, 400038, China
| | - Warren Strober
- Mucosal Immunity Section, Laboratory for Host Defenses, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Liping Zhao
- State Key Laboratory of Microbial Metabolism, Department of Biological Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China.
| | - Guangxun Meng
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences; University of Chinese Academy of Sciences, Shanghai, 200031, China.
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Feng B, Lu J, Zhang S, Yan X, Li J, Xue P, Wang M, Lu A, Ma J, Zang L, Dong F, He Z, Yue F, Sun J, Hong X, Zheng M. Laparoscopic abdominoperineal excision with trans-abdominal individualized levator transection: interim analysis of a randomized controlled trial. Colorectal Dis 2017; 19:O246-O252. [PMID: 28477432 DOI: 10.1111/codi.13711] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 09/13/2016] [Accepted: 02/24/2017] [Indexed: 02/08/2023]
Abstract
AIM Extralevator abdominoperineal excision (ELAPR) is challenging 'conventional' abdominoperineal excision (APR), yet the safety and efficacy of ELAPR is still under debate. We therefore developed a laparoscopic APR with trans-abdominal individualized levator transection (LAPR-TILT) approach and compared the outcome with a conventional laparoscopic APR (CLAPR). METHOD All eligible patients were entered a single-centre randomized controlled trial to compare CLAPR and LAPR-TILT. We assessed the first 185 patients, including operative findings, complications, histopathology and urogenital function. RESULTS Ninety-three patients in the CLAPR group and 92 patients in the APR-TILT group were included for analysis. The APR-TILT procedure took less time [137 (101-175) min vs 146 (102-187) min; P = 0.03], mainly owing to faster perineal dissection. APR-TILT resulted in a reduced rate of bowel perforation (1.1% vs 8.6%; P = 0.04), circumferential resection margin positivity (1.1% vs 10.8%; P = 0.01) and postoperative wound complications (5.4% vs 16.2%; P = 0.02) compared with the CLAPR procedure. At a median follow-up of 19 months after surgery, three patients (3.2%) in the CLAPR group had tumour recurrence while no tumour recurrence occurred in the LAPR-TILT group. Patients who underwent LAPR-TILT reported fewer urinary or sexual problems (LAPR-TILT vs CLAPR, 10.9% vs 24.7% and 17.4% vs 38.7%, respectively). CONCLUSION Compared with CLAPR, LAPR-TILT achieved better pathological results for factors that are surrogate parameters for local recurrence. LAPR-TILT could also reduce the risk of urogenital dysfunction.
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Affiliation(s)
- B Feng
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - J Lu
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - S Zhang
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - X Yan
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - J Li
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - P Xue
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - M Wang
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - A Lu
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - J Ma
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - L Zang
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - F Dong
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - Z He
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - F Yue
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - J Sun
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - X Hong
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
| | - M Zheng
- Department of Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, and Shanghai Minimally Invasive Surgery Center, Shanghai, China
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Han F, Lu A, Yuan Y, Huang W, Beerntsen BT, Huang J, Ling E. Characterization of an entomopathogenic fungi target integument protein, Bombyx mori single domain von Willebrand factor type C, in the silkworm, Bombyx mori. Insect Mol Biol 2017; 26:308-316. [PMID: 28168773 DOI: 10.1111/imb.12293] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The insect cuticle works as the first line of defence to protect insects from pathogenic infections and water evaporation. However, the old cuticle must be shed in order to enter the next developmental stage. During each ecdysis, moulting fluids are produced and secreted into the area among the old and new cuticles. In a previous study, the protein Bombyx mori single domain von Willebrand factor type C (BmSVWC; BGIBMGA011399) was identified in the moulting fluids of Bo. mori and demonstrated to regulate ecdysis. In this study we show that in Bo. mori larvae, BmSVWC primarily locates to the integument (epidermal cells and cuticle), wing discs and head. During the moulting stage, BmSVWC is released into the moulting fluids, and is then produced again by epidermal cells after ecdysis. Fungal infection was shown to decrease the amount of BmSVWC in the cuticle, which indicates that BmSVWC is a target protein of entomopathogenic fungi. Thus, BmSVWC is mainly involved in maintaining the integrity of the integument structure, which serves to protect insects from physical damage and pathogenic infection.
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Affiliation(s)
- F Han
- College of Life Sciences, Shanghai University, Shanghai, China
- Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - A Lu
- Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
- Key Laboratory of Medical Reprogramming Technology, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Y Yuan
- Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - W Huang
- Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - B T Beerntsen
- Veterinary Pathobiology, University of Missouri, Columbia, MO, USA
| | - J Huang
- College of Life Sciences, Shanghai University, Shanghai, China
| | - E Ling
- Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
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Lu A, Li H, Niu J, Wu S, Xue G, Yao X, Guo Q, Wan N, Abliz P, Yang G, An L, Meng G. Hyperactivation of the NLRP3 Inflammasome in Myeloid Cells Leads to Severe Organ Damage in Experimental Lupus. J Immunol 2016; 198:1119-1129. [PMID: 28039299 DOI: 10.4049/jimmunol.1600659] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 11/30/2016] [Indexed: 12/13/2022]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune syndrome associated with severe organ damage resulting from the activation of immune cells. Recently, a role for caspase-1 in murine lupus was described, indicating an involvement of inflammasomes in the development of SLE. Among multiple inflammasomes identified, the NLRP3 inflammasome was connected to diverse diseases, including autoimmune encephalomyelitis. However, the function of NLRP3 in SLE development remains elusive. In this study, we explored the role of NLRP3 in the development of SLE using the pristane-induced experimental lupus model. It was discovered that more severe lupus-like syndrome developed in Nlrp3-R258W mice carrying the gain-of-function mutation. Nlrp3-R258W mutant mice exhibited significantly higher mortality upon pristane challenge. Moreover, prominent hypercellularity and interstitial nephritis were evident in the glomeruli of Nlrp3-R258W mice. In addition, hyperactivation of the NLRP3 inflammasome in this mouse line resulted in proteinuria and mesangial destruction. Importantly, all of these phenotypes were largely attributed to the Nlrp3-R258W mutation expressed in myeloid cells, because Cre recombinase-mediated depletion of this mutant from such cells rescued mice from experimental lupus. Taken together, our study demonstrates a critical role for NLRP3 in the development of SLE and suggests that modulating the inflammasome signal may help to control the inflammatory damage in autoimmune diseases, including lupus.
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Affiliation(s)
- Ailing Lu
- Chinese Academy of Sciences Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Hua Li
- Chinese Academy of Sciences Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China.,College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Junling Niu
- Chinese Academy of Sciences Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Shuxian Wu
- Chinese Academy of Sciences Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Guang Xue
- Chinese Academy of Sciences Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Xiaomin Yao
- Chinese Academy of Sciences Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Qiuhong Guo
- Chinese Academy of Sciences Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Nianhong Wan
- Department of Laboratory Medicine, Central Hospital of Zhabei District, Shanghai 200070, China; and
| | - Paride Abliz
- Department of Dermatology, First Hospital of Xinjiang Medical University, Urumqi, Xinjiang 830054, China
| | - Guiwen Yang
- College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Liguo An
- College of Life Science, Shandong Normal University, Jinan 250014, China
| | - Guangxun Meng
- Chinese Academy of Sciences Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China;
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47
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Huard J, Mu X, Lu A. Evolving paradigms in clinical pharmacology and therapeutics for the treatment of Duchenne muscular dystrophy. Clin Pharmacol Ther 2016; 100:142-6. [DOI: 10.1002/cpt.379] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 04/06/2016] [Indexed: 11/10/2022]
Affiliation(s)
- J Huard
- Department of Orthopedic Surgery, McGovern Medical School; University of Texas Health Science Center at Houston; Houston Texas USA
- Steadman Philippon Research Institute; Vail Colorado USA
- Brown Foundation Institute of Molecular Medicine; Center for Tissue Engineering and Aging Research; Houston Texas USA
| | - X Mu
- Department of Orthopedic Surgery, McGovern Medical School; University of Texas Health Science Center at Houston; Houston Texas USA
- Steadman Philippon Research Institute; Vail Colorado USA
- Brown Foundation Institute of Molecular Medicine; Center for Tissue Engineering and Aging Research; Houston Texas USA
| | - A Lu
- Department of Orthopedic Surgery, McGovern Medical School; University of Texas Health Science Center at Houston; Houston Texas USA
- Steadman Philippon Research Institute; Vail Colorado USA
- Brown Foundation Institute of Molecular Medicine; Center for Tissue Engineering and Aging Research; Houston Texas USA
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48
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Su J, Lu A, Bryson C, Rosoff J, Honig S. 125 Initial Peyronie’s Disease Questionnaire Bother Scores do not Correlate with Degree of Penile Curvature in Patients with Peyronie’s Disease. J Sex Med 2016. [DOI: 10.1016/j.jsxm.2016.02.131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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49
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Lu A, Pallero MA, Lei W, Hong H, Yang Y, Suto MJ, Murphy-Ullrich JE. Inhibition of Transforming Growth Factor-β Activation Diminishes Tumor Progression and Osteolytic Bone Disease in Mouse Models of Multiple Myeloma. Am J Pathol 2016; 186:678-90. [PMID: 26801735 PMCID: PMC4816696 DOI: 10.1016/j.ajpath.2015.11.003] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 11/03/2015] [Accepted: 11/12/2015] [Indexed: 12/12/2022]
Abstract
Transforming growth factor (TGF)-β supports multiple myeloma progression and associated osteolytic bone disease. Conversion of latent TGF-β to its biologically active form is a major regulatory node controlling its activity. Thrombospondin1 (TSP1) binds and activates TGF-β. TSP1 is increased in myeloma, and TSP1-TGF-β activation inhibits osteoblast differentiation. We hypothesized that TSP1 regulates TGF-β activity in myeloma and that antagonism of the TSP1-TGF-β axis inhibits myeloma progression. Antagonists (LSKL peptide, SRI31277) derived from the LSKL sequence of latent TGF-β that block TSP1-TGF-β activation were used to determine the role of the TSP1-TGF-β pathway in mouse models of myeloma. TSP1 binds to human myeloma cells and activates TGF-β produced by cultured human and mouse myeloma cell lines. Antagonists delivered via osmotic pump in an intratibial severe combined immunodeficiency CAG myeloma model or in a systemic severe combined immunodeficiency CAG-heparanase model of aggressive myeloma reduced TGF-β signaling (phospho-Smad 2) in bone sections, tumor burden, mouse IL-6, and osteoclasts, increased osteoblast number, and inhibited bone destruction as measured by microcomputed tomography. SRI31277 reduced tumor burden in the immune competent 5TGM1 myeloma model. SRI31277 was as effective as dexamethasone or bortezomib, and SRI31277 combined with bortezomib showed greater tumor reduction than either agent alone. These studies validate TSP1-regulated TGF-β activation as a therapeutic strategy for targeted inhibition of TGF-β in myeloma.
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Affiliation(s)
- Ailing Lu
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Manuel A Pallero
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Weiqi Lei
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Huixian Hong
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
| | - Yang Yang
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama
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50
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Lu A, Fang Y, Du X, Li Y, Cai Z, Yu K, Zhao L, Wang B, Wu J, Cheng Y, Zuo Y, Jia Y, Tan F, Ding L, Lu J, Zhang L, Huang X. Efficacy, safety and pharmacokinetics of clofarabine in Chinese pediatric patients with refractory or relapsed acute lymphoblastic leukemia: a phase II, multi-center study. Blood Cancer J 2016; 6:e400. [PMID: 26918364 PMCID: PMC4771971 DOI: 10.1038/bcj.2016.8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Affiliation(s)
- A Lu
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - Y Fang
- Department of Phase 1 Clinical Trial, Peking University People's Hospital, Beijing, China
| | - X Du
- Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Y Li
- The First Hospital of China Medical University, Shenyang, China
| | - Z Cai
- The First Affiliated Hospital, Zhejiang University, Hangzhou, China
| | - K Yu
- The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - L Zhao
- Department of Phase 1 Clinical Trial, Peking University People's Hospital, Beijing, China
| | - B Wang
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - J Wu
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - Y Cheng
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - Y Zuo
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - Y Jia
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - F Tan
- Betta Pharmaceuticals Co., Ltd, Hangzhou, China
| | - L Ding
- Betta Pharmaceuticals Co., Ltd, Hangzhou, China
| | - J Lu
- Institute of Hematology, Peking University People's Hospital, Beijing, China
| | - L Zhang
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - X Huang
- Institute of Hematology, Peking University People's Hospital, Beijing, China
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