1
|
Chang T, Li G, Chang D, Amini R, Zhu X, Zhao T, Gu J, Li Z, Li Y. An RNA-Cleaving DNAzyme That Requires an Organic Solvent to Function. Angew Chem Int Ed Engl 2023; 62:e202310941. [PMID: 37648674 DOI: 10.1002/anie.202310941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/30/2023] [Accepted: 08/30/2023] [Indexed: 09/01/2023]
Abstract
Engineering functional nucleic acids that are active under unusual conditions will not only reveal their hidden abilities but also lay the groundwork for pursuing them for unique applications. Although many DNAzymes have been derived to catalyze diverse chemical reactions in aqueous solutions, no prior study has been set up to purposely derive DNAzymes that require an organic solvent to function. Herein, we utilized in vitro selection to isolate RNA-cleaving DNAzymes from a random-sequence DNA pool that were "compelled" to accept 35 % dimethyl sulfoxide (DMSO) as a cosolvent, via counter selection in a purely aqueous solution followed by positive selection in the same solution containing 35 % DMSO. This experiment led to the discovery of a new DNAzyme that requires 35 % DMSO for its catalytic activity and exhibits drastically reduced activity without DMSO. This DNAzyme also requires divalent metal ions for catalysis, and its activity is enhanced by monovalent ions. A minimized, more efficient DNAzyme was also derived. This work demonstrates that highly functional, organic solvent-dependent DNAzymes can be isolated from random-sequence DNA libraries via forced in vitro selection, thus expanding the capability and potential utility of catalytic DNA.
Collapse
Affiliation(s)
- Tianjun Chang
- School of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China
| | - Guangping Li
- School of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China
| | - Dingran Chang
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Ryan Amini
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Xiaoni Zhu
- School of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China
| | - Tongqian Zhao
- School of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China
| | - Jimmy Gu
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| | - Zhongping Li
- Institute of Environmental Science, Shanxi University, Taiyuan, 030006, China
| | - Yingfu Li
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, L8S 4K1, Canada
| |
Collapse
|
2
|
Wu L, Wang Z, Chang T, Song B, Zhao T, Wang H, Ma M. Morphological characteristics of amino acids in wet deposition of Danjiangkou Reservoir in China's South-to-North Water Diversion Project. Environ Sci Pollut Res Int 2022; 29:73100-73114. [PMID: 35622276 DOI: 10.1007/s11356-022-20802-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
Amino acids are an important constituent in organic nitrogen deposition, and changes in the content of their components have a direct impact on the nitrogen input to the ecosystem. From December 2018 to November 2019, 176 precipitation samples were collected at Danjiangkou Reservoir, the source of the middle line of the South-to-North Water Diversion Project, and the variation characteristics of dissolved free amino acids (DFAA) and dissolved combined amino acids (DCAA) were analyzed. The volume-weighted value concentration ranges of DFAA and DCAA were 0.159-1.136 μmol/L and 1.603-7.044 μmol/L, respectively, and amino acids were dominated by DCAA in wet deposition. Our results showed that glutamic acid (Glu), glycine (Gly), and aspartic acid (Asp) were the dominant amino acids in both DFAA and DCAA. The concentration of DFAA was highest in winter, while the concentration of DCAA was in autumn. Dissolved total amino acids (DTAA) were insignificantly correlated with DFAA, whereas they were linearly correlated with DCAA, indicating a significant influence of agricultural activities on DTAA. The analysis of the backward trajectory of air masses showed that amino acids were mainly influenced by proximity inputs around the reservoir. The bioavailability of organic matter was higher in the southeastern of the reservoir than in the northwestern. The wet deposition flux of TDN was 14.096 kg N/ha/year, and the potential ecological impact on water bodies cannot be ignored. This study was conducted to clarify the variation characteristics of amino acids fractions in wet deposition and to provide parameters for regional assessment of amino acids wet deposition. The ecological impact of nitrogen wet deposition on water bodies will be explored to provide a basis for nitrogen pollution control and water quality protection in the middle line of the South-to-North Water Diversion Project.
Collapse
Affiliation(s)
- Li Wu
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China
| | - Zuheng Wang
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China
| | - Tianjun Chang
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China
| | - Baihui Song
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China
| | - Tongqian Zhao
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, China.
| | - Haipo Wang
- Sanmenxia Aoke Chemical Co., Ltd, Sanmenxia, 472000, China
| | - Ming Ma
- Ningbo Customs Technical Center, Ningbo, 315000, China
| |
Collapse
|
3
|
Chang T, Bagur R. THE RETURN OF SUBCLAVIAN CANNULATION IN THE CRITICAL CARE SETTING: A WESTERN CRITICAL CARE EXPERIENCE. Can J Cardiol 2022. [DOI: 10.1016/j.cjca.2022.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
4
|
Chang T, Li G, Ding Z, Li W, Zhu P, Lei W, Shangguan D. Potential G-quadruplexes within the Promoter Nuclease Hypersensitive Sites of the Heat-responsive Genes in Rice. Chembiochem 2022; 23:e202200405. [PMID: 36006168 DOI: 10.1002/cbic.202200405] [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: 07/18/2022] [Revised: 08/21/2022] [Indexed: 11/11/2022]
Abstract
G-quadruplexes (G4s) have been shown to be involved in the regulation of multiple cellular processes. Exploring putative G4-forming sequences (PQSs) in heat-responsive genes of rice and their folding structures under different conditions will help to understand the mechanism in response to heat stress. In this work, we discovered a prevalence of PQSs in nuclease hypersensitive sites within the promoters of heat-responsive genes. Moreover, 50% of the searched G3 PQSs ((G3+L1-7)3+G3+) locate in heat shock transcription factors. Circular dichroism spectroscopy, thermal difference spectroscopy, and UV melting analysis demonstrated the representative PQSs could adopt stable G4s at physiological temperature and potassium concentration. These PQSs were able to stall Klenow Fragment (KF) DNA polymerase by the formation of G4s. However, the G4s with Tm values around 50 - 60 oC could be increasingly unwound by KF with the increase of temperatures from 25 to 50 oC, implying these G4s could sense the changes in temperature by structural switch. This work offers fresh clue to understand the potential of G4-involved functions of PQSs and the molecular events in plants in the response to heat stress.
Collapse
Affiliation(s)
- Tianjun Chang
- Henan Polytechnic University, Institute of Enveiroment and Resoures, 2001 Shiji Avenue, 454003, Jiaozuo, CHINA
| | - Guangping Li
- Henan Polytechnic University, Institute of Resources and Environment, CHINA
| | - Zhan Ding
- Henan Polytechnic University, Institute of Resources and Environment, CHINA
| | - Weiguo Li
- Henan Polytechnic University, Institute of Resources and Environment, CHINA
| | - Panpan Zhu
- Henan Polytechnic University, Institute of Resources and Environment, CHINA
| | - Wei Lei
- Henan Polytechnic University, Institute of Resources and Environment, CHINA
| | - Dihua Shangguan
- Institute of Chemistry Chinese Academy of Sciences, Beijing National Laboratory for Molecular Sciences, Key Labor-atory of Analytical Chemistry for Living Biosystems, CAS Re-search/Education Center for Excellence in Molecular Sciences, CHINA
| |
Collapse
|
5
|
Lin Y, Lin J, Chang T, Chou T, Hung L, Huang C. PO-1329 Predictive factors for pathologic good response after the neoadjuvant CRT of rectal cancer. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03293-5] [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]
|
6
|
Chang T, Ngo J, Vargas JI, Rocheford E, Rocheford T, Ortiz D, Karcher DM, Johnson TA. Research Note: Orange corn altered the cecal microbiome in laying hens. Poult Sci 2021; 101:101685. [PMID: 35077921 PMCID: PMC8792267 DOI: 10.1016/j.psj.2021.101685] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 12/13/2021] [Accepted: 12/17/2021] [Indexed: 12/01/2022] Open
Abstract
Carotenoids, which are pigments known to have many health benefits, such as their antioxidant properties, are being researched for their potential as a feed additive for production animals. These pigments are found in varying quantities in different breeds of corn, and their impact on the chicken microbiome requires further investigation. This 35 d laying hen (Novagen White) feeding trial involved varying the levels and composition of carotenoids by changing the corn source: white (0.9 µg total carotinoids/g total diet), yellow (5.7 µg/g), and orange (24.9 µg/g). For each of the three corn diet treatments, 6 replicate cages were randomly assigned. The cecal microbial community composition of the hens was then studied by 16S rRNA gene amplicon sequencing. The composition of the cecal bacterial community, as determined by Bray-Curtis dissimilarity, was different (P < 0.05) in chickens fed the orange corn diet, compared to chickens on the white corn diet, but there was no statistical difference between animals fed yellow corn compared to the white or orange corn groups. There was no change in the alpha diversity between any of the groups. Within Lactobacillus, which is one of the most abundant genera, 2 amplicon sequence variants (ASVs) were decreased and one ASV was increased in the orange corn group compared to both the white and yellow corn groups. While previous studies showed that orange corn did not alter the community composition in broilers, it appears that orange corn based feed may alter the community composition of laying hens.
Collapse
Affiliation(s)
- T Chang
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - J Ngo
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - J I Vargas
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA; Department of Animal Sciences, Auburn University, Auburn, AL, USA
| | | | - T Rocheford
- Nutramaize, IN 47906, USA; Department of Agronomy, Purdue University, West Lafayette, IN 47907, USA
| | - D Ortiz
- Department of Agronomy, Purdue University, West Lafayette, IN 47907, USA
| | - D M Karcher
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - T A Johnson
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA.
| |
Collapse
|
7
|
Chang T, Yusin J, Wang V. M027 MELOXICAM INDUCED FIXED DRUG ERUPTION. Ann Allergy Asthma Immunol 2021. [DOI: 10.1016/j.anai.2021.08.201] [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: 10/19/2022]
|
8
|
Eng C, Rao T, Chang T. Management of a Rare Case of Chemical Peritonitis after Laparoscopic Dermoid Cystectomy. J Minim Invasive Gynecol 2021. [DOI: 10.1016/j.jmig.2021.09.484] [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]
|
9
|
Sandoval Karamian AG, Mercimek-Andrews S, Mohammad K, Molloy EJ, Chang T, Chau V, Murray DM, Wusthoff CJ. Neonatal encephalopathy: Etiologies other than hypoxic-ischemic encephalopathy. Semin Fetal Neonatal Med 2021; 26:101272. [PMID: 34417137 DOI: 10.1016/j.siny.2021.101272] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Neonatal encephalopathy (NE) describes the clinical syndrome of a newborn with abnormal brain function that may result from a variety of etiologies. HIE should be distinguished from neonatal encephalopathy due to other causes using data gathered from the history, physical and neurological exam, and further investigations. Identifying the underlying cause of encephalopathy has important treatment implications. This review outlines conditions that cause NE and may be mistaken for HIE, along with their distinguishing clinical features, pathophysiology, investigations, and treatments. NE due to brain malformations, vascular causes, neuromuscular causes, genetic conditions, neurogenetic disorders and inborn errors of metabolism, central nervous system (CNS) and systemic infections, and toxic/metabolic disturbances are discussed.
Collapse
Affiliation(s)
- A G Sandoval Karamian
- Children's Hospital of Philadelphia, Division of Neurology, 3501 Civic Center Blvd Office 1200.12, Philadelphia, PA, 19104, USA.
| | - S Mercimek-Andrews
- Biochemical Geneticist, Department of Medical Genetics, University of Alberta, 8-39 Medical Sciences Building, 8613 - 144 Street, Edmonton, T6G 2H7, Alberta, Canada.
| | - K Mohammad
- Cumming School of Medicine, University of Calgary, Alberta Children's Hospital, Room B4-286, 28 Oki drive NW, Calgary, AB, T3B 6A8, Canada.
| | - E J Molloy
- Trinity College, the University of Dublin, Trinity Translational Medicine Institute, Dublin, Ireland; Children's Health Ireland at Tallaght and Crumlin & and Coombe Women's and Infants University Hospital, Dublin, Ireland; Trinity Research in Childhood Centre (TRiCC), Trinity Academic Centre, Tallaght University Hospital, Dublin 24, Ireland.
| | - T Chang
- George Washington University School of Medicine & Health Sciences, Washington, DC, 20010, USA; Neonatal Neurology Program, Children's National Hospital, 111 Michigan Ave NW, Washington, DC, 20010, USA.
| | - Vann Chau
- Neurology, Neonatal Neurology Program, The Hospital for Sick Children, 555 University Avenue, Toronto ON, M5G 1X8, Canada.
| | - D M Murray
- Deptartment of Paediatric and Child Health, University College Cork, ARm 2.32, Paediatric Academic Unit, Floor 2, Seahorse Unit, Cork University Hospital, Wilton, Cork, T12 DCA4, Ireland.
| | - Courtney J Wusthoff
- Division of Child Neurology, Division of Pediatrics- Neonatal and Developmental Medicine, Stanford Children's Health, 750 Welch Road, Suite 317, Palo Alto, CA, 94304 USA.
| |
Collapse
|
10
|
Abstract
Functional nucleic acids (FNAs), including naturally occurring ribozymes and riboswitches as well as artificially created DNAzymes and aptamers, have been popular molecular toolboxes for diverse applications. Given the high chemical stability of nucleic acids and their ability to fold into diverse sequence-dependent structures, FNAs are suggested to be highly functional under unusual reaction conditions. This review will examine the progress of research on FNAs under conditions of low pH, high temperature, freezing conditions, and the inclusion of organic solvents and denaturants that are known to disrupt nucleic acid structures. The FNA species to be discussed include ribozymes, riboswitches, G-quadruplex-based peroxidase mimicking DNAzymes, RNA-cleaving DNAzymes, and aptamers. Research within this space has not only revealed the hidden talents of FNAs but has also laid important groundwork for pursuing these intriguing functional macromolecules for unique applications.
Collapse
Affiliation(s)
- Tianjun Chang
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, L8S 4K1, Canada.,Department of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, Henan, P. R. China
| | - Sisi He
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, L8S 4K1, Canada.,School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen, 518055, Guangdong, P. R. China
| | - Ryan Amini
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, L8S 4K1, Canada
| | - Yingfu Li
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, L8S 4K1, Canada
| |
Collapse
|
11
|
Chang T, Sepati M, Herting G, Leygraf C, Rajarao GK, Butina K, Richter-Dahlfors A, Blomberg E, Odnevall Wallinder I. A novel methodology to study antimicrobial properties of high-touch surfaces used for indoor hygiene applications-A study on Cu metal. PLoS One 2021; 16:e0247081. [PMID: 33630868 PMCID: PMC7906481 DOI: 10.1371/journal.pone.0247081] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 02/01/2021] [Indexed: 01/30/2023] Open
Abstract
Metal-based high-touch surfaces used for indoor applications such as doorknobs, light switches, handles and desks need to remain their antimicrobial properties even when tarnished or degraded. A novel laboratory methodology of relevance for indoor atmospheric conditions and fingerprint contact has therefore been elaborated for combined studies of both tarnishing/corrosion and antimicrobial properties of such high-touch surfaces. Cu metal was used as a benchmark material. The protocol includes pre-tarnishing/corrosion of the high touch surface for different time periods in a climatic chamber at repeated dry/wet conditions and artificial sweat deposition followed by the introduction of bacteria onto the surfaces via artificial sweat droplets. This methodology provides a more realistic and reproducible approach compared with other reported procedures to determine the antimicrobial efficiency of high-touch surfaces. It provides further a possibility to link the antimicrobial characteristics to physical and chemical properties such as surface composition, chemical reactivity, tarnishing/corrosion, surface roughness and surface wettability. The results elucidate that bacteria interactions as well as differences in extent of tarnishing can alter the physical properties (e.g. surface wettability, surface roughness) as well as the extent of metal release. The results clearly elucidate the importance to consider changes in chemical and physical properties of indoor hygiene surfaces when assessing their antimicrobial properties.
Collapse
Affiliation(s)
- T. Chang
- Department of Chemistry, KTH Royal Institute of Technology, Div. Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, Stockholm, Sweden
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - M. Sepati
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, Italy
| | - G. Herting
- Department of Chemistry, KTH Royal Institute of Technology, Div. Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, Stockholm, Sweden
| | - C. Leygraf
- Department of Chemistry, KTH Royal Institute of Technology, Div. Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, Stockholm, Sweden
| | - G. Kuttuva Rajarao
- Department of Industrial Biotechnology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden
| | - K. Butina
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - A. Richter-Dahlfors
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
- KTH Royal Institute of Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Fibre and Polymer Technology, Stockholm, Sweden
| | - E. Blomberg
- Department of Chemistry, KTH Royal Institute of Technology, Div. Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, Stockholm, Sweden
| | - I. Odnevall Wallinder
- Department of Chemistry, KTH Royal Institute of Technology, Div. Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, Stockholm, Sweden
- AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, Stockholm, Sweden
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| |
Collapse
|
12
|
Atukorala I, Pathmeswaran A, Makovey J, Metcalf B, Bennell KL, March L, Chang T, Zhang Y, Hunter DJ. Can pain flares in knee osteoarthritis be predicted? Scand J Rheumatol 2021; 50:198-205. [PMID: 33467963 DOI: 10.1080/03009742.2020.1829035] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Objectives: This study examined whether risk factors for knee osteoarthritis (KOA) pain such as age, gender, body mass index (BMI), baseline pain, and other putative risk factors for knee osteoarthritis pain flares (KOAF) (e.g. knee buckling, injury, mood/stress/social support scores, and footwear) could predict KOAF.Method: People with KOA and previous history of KOAF were selected from a 3 month web-based longitudinal study. KOAF was defined as an increase of ≥ 2 points on a numeric rating scale (compared with background pain) which resolved within 20 days. Predictors assessed at baseline were gender, age, duration of KOA, BMI, pain, knee injury (7 days before), knee buckling (2 days before), Lubben Social Support, Knee Injury and Osteoarthritis Outcome Score, Intermittent and Constant Osteoarthritis Pain score (ICOAP), Positive/Negative Affect Score, and footwear stability/heel height. Outcome was occurrence of any KOAF during the ensuing 30 days. The combined ability of the above variables to predict occurrence of any KOAF was evaluated by multiple logistic regression with a 10-fold cross-validation method to build and internally validate the model. Variables that assessed similar domains were eliminated using receiver operating characteristics curve assessment for best fit.Results: Complete data were available for 313 people (66.6% female, mean ± sd age 62.3 ± 8.2 years, BMI 29.7 ± 6.5 kg/m2). Increasing age, years of osteoarthritis, BMI, background/worst levels of pain, knee injury, knee buckling, ICOAP, and footwear category/heel height significantly predicted the occurrence of KOAF during the following 30 days, with an area under the curve of 0.73 (95% confidence interval 0.67-0.80).Conclusion: A combination of risk factors assessed at baseline, including exposures with potential to vary, successfully predicts the KOAF in the ensuing 30 days.
Collapse
Affiliation(s)
- I Atukorala
- Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - A Pathmeswaran
- Department of Public Health, University of Kelaniya, Ragama, Sri Lanka
| | - J Makovey
- Institute of Bone and Joint Research, Kolling Institute, University of Sydney, Sydney, Australia
| | - B Metcalf
- Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, University of Melbourne, Melbourne, Australia
| | - K L Bennell
- Centre for Health, Exercise and Sports Medicine, Department of Physiotherapy, School of Health Sciences, University of Melbourne, Melbourne, Australia
| | - L March
- Institute of Bone and Joint Research, Kolling Institute, University of Sydney, Sydney, Australia.,Rheumatology Department, Royal North Shore Hospital, Sydney, Australia
| | - T Chang
- Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Y Zhang
- Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - D J Hunter
- Institute of Bone and Joint Research, Kolling Institute, University of Sydney, Sydney, Australia.,Rheumatology Department, Royal North Shore Hospital, Sydney, Australia
| |
Collapse
|
13
|
Makishima H, Yasuda S, Kato H, Kaneko T, Sato H, Chang T, Kasuya G, Yamada S, Tsuji H. PO-1077: Carbon-ion radiotherapy for hepatocellular carcinoma with vascular invasion. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)01094-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
14
|
Sato H, Kasuya G, Chang T, Makishima H, Nemoto K, Tsuji H. PH-0115: Five-year outcomes of 51.6 Gy (RBE) in 12-fractionated carbon-ion RT for localized prostate cancer. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00141-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
15
|
Goold S, Tipirneni R, Ayanian J, Beathard E, Chang T, Haggins A, Kieffer E, Kirch M, Kullgren J, Lee S, Lewallen M, Patel M, Rowe Z, Solway E, Clark S. Patterns of Enrollment Churn in Medicaid Expansion, Subsequent Insurance Coverage, and Access to Care: A Longitudinal Study. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13379] [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: 11/26/2022] Open
Affiliation(s)
- S. Goold
- University of Michigan Ann Arbor MI United States
| | - R. Tipirneni
- University of Michigan Ann Arbor MI United States
| | - J. Ayanian
- University of Michigan Ann Arbor MI United States
| | - E. Beathard
- Institute for Healthcare Policy and Innovation University of Michigan Ann Arbor MI United States
| | - T. Chang
- Department of Family Medicine University of Michigan Ann Arbor MI United States
| | - A. Haggins
- University of Michigan Ann Arbor MI United States
| | - E. Kieffer
- University of Michigan Ann Arbor MI United States
| | - M. Kirch
- University of Michigan Ann Arbor MI United States
| | - J.T. Kullgren
- Division of General Medicine Department of Internal Medicine University of Michigan Ann Arbor MI United States
| | - S. Lee
- Institute for Healthcare Policy and Innovation University of Michigan Ann Arbor MI United States
| | - M. Lewallen
- University of Michigan Ann Arbor MI United States
| | - M. Patel
- School of Public Health University of Michigan Ann Arbor MI United States
| | - Z. Rowe
- Friends of Parkside Detroit MI United States
| | - E. Solway
- Institute for Healthcare Policy and Innovation University of Michigan Ann Arbor MI United States
| | - S.J. Clark
- University of Michigan Ann Arbor MI United States
| |
Collapse
|
16
|
Tipirneni R, Kieffer E, Ayanian J, Patel M, Kirch M, Luster J, Beathard E, Haggins A, Kullgren J, Chang T, Clark S, Lee S, Solway E, Rowe Z, Goold S. Longitudinal Trends in Enrollees’ Employment and Student Status after Medicaid Expansion. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13376] [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: 11/30/2022] Open
Affiliation(s)
- R. Tipirneni
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- University of Michigan Ann Arbor MI United States
| | - E.C. Kieffer
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- University of Michigan School of Social Work Ann Arbor MI United States
| | - J.Z. Ayanian
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- University of Michigan Gerald R. Ford School of Public Policy Ann Arbor MI United States
- University of Michigan School of Public Health Ann Arbor MI United States
- Department of Internal Medicine University of Michigan Ann Arbor MI United States
| | - M.R. Patel
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- University of Michigan School of Public Health Ann Arbor MI United States
| | - M.A. Kirch
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
| | - J. Luster
- Department of Internal Medicine University of Michigan Ann Arbor MI United States
| | - E. Beathard
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
| | - A.N. Haggins
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- Department of Emergency Medicine University of Michigan Ann Arbor MI United States
| | - J.T. Kullgren
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- VA Ann Arbor Center for Clinical Management Research Ann Arbor MI United States
- Center for Bioethics and Social Sciences in Medicine University of Michigan Ann Arbor MI United States
- University of Michigan Medical School and School of Public Health Ann Arbor MI United States
| | - T. Chang
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- Department of Family Medicine University of Michigan Ann Arbor MI United States
| | - S.J. Clark
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- University of Michigan Ann Arbor MI United States
| | - S. Lee
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- University of Michigan Institute for Social Research Ann Arbor MI United States
| | - E. Solway
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
| | - Z. Rowe
- Friends of Parkside Detroit MI United States
| | - S.D. Goold
- University of Michigan Institute for Healthcare Policy and Innovation Ann Arbor MI United States
- University of Michigan School of Public Health Ann Arbor MI United States
- Department of Internal Medicine University of Michigan Ann Arbor MI United States
- Center for Bioethics and Social Sciences in Medicine University of Michigan Ann Arbor MI United States
| |
Collapse
|
17
|
Kountanis JA, Muzik M, Chang T, Langen E, Cassidy R, Mashour GA, Bauer ME. Relationship between postpartum mood disorder and birth experience: a prospective observational study. Int J Obstet Anesth 2020; 44:90-99. [PMID: 32861082 DOI: 10.1016/j.ijoa.2020.07.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 11/25/2019] [Revised: 07/16/2020] [Accepted: 07/18/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND This study aims to investigate the relationship between the birth experience and the risk of developing postpartum depression or post-traumatic stress disorder. METHODS In this prospective, longitudinal, observational study, women were assessed at different time points for depression and post-traumatic stress disorder. The risk of depression or post-traumatic stress disorder based on patient characteristics and specific birth events was assessed within three months postpartum. RESULTS We enrolled 600 women; 426 were eligible for postpartum assessment. At six weeks and three months postpartum, 15.9% and 12.7% screened positive for depression respectively. Positive post-traumatic stress disorder screenings at six weeks and three months postpartum were 6.2% and 5.1% respectively. Twenty-seven women (8.3%) with a negative screening at six weeks converted to a positive depression or post-traumatic stress disorder screening at three months. A pre-existing history of anxiety or depression was associated with an increased risk of developing depression (aOR 2.12, 95% CI 1.30 to 3.47) and post-traumatic stress (aOR 3.15, 95% CI 1.42 to 7.02) within three months postpartum. The risk of developing post-traumatic stress disorder within three months postpartum was also increased among patients experiencing their first delivery (aOR 2.55, 95% CI 1.10 to 5.88) or operative management of postpartum hemorrhage (aOR 4.44, 95% CI 1.16 to 17.02). CONCLUSION Depression and post-traumatic stress symptoms either persisted or had new onset at three months postpartum. Mental health screening and postpartum follow-up after six weeks should be considered in high-risk patients who have a history of psychopathology, nulliparity, or undergo operative management of postpartum hemorrhage.
Collapse
Affiliation(s)
- J A Kountanis
- Department of Anesthesiology, Michigan Medicine, 1500 E Medical Center Dr, MI, USA; Department of Obstetrics and Gynecology, Michigan Medicine, 1500 E Medical Center Dr, MI, USA.
| | - M Muzik
- Department of Obstetrics and Gynecology, Michigan Medicine, 1500 E Medical Center Dr, MI, USA; Department of Psychiatry, Michigan Medicine, 1500 E Medical Center Dr, MI, USA; U-M for Healthcare Policy and Innovation, 2800 Plymouth Road, North Campus Research Complex, Building 16, MI, USA
| | - T Chang
- Department of Family Medicine, Michigan Medicine, 1500 E Medical Center Dr, MI, USA; U-M for Healthcare Policy and Innovation, 2800 Plymouth Road, North Campus Research Complex, Building 16, MI, USA
| | - E Langen
- Department of Obstetrics and Gynecology, Michigan Medicine, 1500 E Medical Center Dr, MI, USA
| | - R Cassidy
- Department of Anesthesiology, Michigan Medicine, 1500 E Medical Center Dr, MI, USA
| | - G A Mashour
- Department of Anesthesiology, Michigan Medicine, 1500 E Medical Center Dr, MI, USA
| | - M E Bauer
- Department of Anesthesiology, Michigan Medicine, 1500 E Medical Center Dr, MI, USA; Department of Obstetrics and Gynecology, Michigan Medicine, 1500 E Medical Center Dr, MI, USA
| |
Collapse
|
18
|
Goonatilaka A, Gomes L, Dayarathna S, Malavige N, Chang T. Association of infection with flaviviruses with occurrence of Guillain-Barre syndrome (GBS). J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1180] [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: 10/25/2022]
|
19
|
Wei K, Chang T, Wei W. LB1088 Dengue virus causes both acute and persistent infection in primary human dermal fibroblasts and hair follicle dermal papilla cells. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.06.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
20
|
An B, Xia J, Chang T, Wang X, Xu L, Zhang L, Gao X, Chen Y, Li J, Gao H. Genome-wide association study reveals candidate genes associated with body measurement traits in Chinese Wagyu beef cattle. Anim Genet 2019; 50:386-390. [PMID: 31179577 DOI: 10.1111/age.12805] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2019] [Indexed: 01/08/2023]
Abstract
We performed a genome-wide association study to identify candidate genes for body measurement traits in 463 Wagyu beef cattle typed with the Illumina Bovine HD 770K SNP array. At the genome-wide level, we detected 18, five and one SNPs associated with hip height, body height and body length respectively. In total, these SNPs are within or near 11 genes, six of which (PENK, XKR4, IMPAD1, PLAG1, CCND2 and SNTG1) have been reported previously and five of which (CSMD3, LAP3, SYN3, FAM19A5 and TIMP3) are novel candidate genes that we found to be associated with body measurement traits. Further exploration of these candidate genes will facilitate genetic improvement in Chinese Wagyu beef cattle.
Collapse
Affiliation(s)
- B An
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - J Xia
- Institute of Basic Medical Science, Westlake Institute for Advanced Study, Hangzhou, 310000, China
| | - T Chang
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - X Wang
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - L Xu
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - L Zhang
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - X Gao
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - Y Chen
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - J Li
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China
| | - H Gao
- Institute of Animal Science, Chinese Academy of Agricultural Science, Beijing, 100193, China
| |
Collapse
|
21
|
Huang Q, Ahn J, Parisi D, Chang T, Hassager O, Panyukov S, Rubinstein M, Vlassopoulos D. Unexpected Stretching of Entangled Ring Macromolecules. Phys Rev Lett 2019; 122:208001. [PMID: 31172770 PMCID: PMC6778440 DOI: 10.1103/physrevlett.122.208001] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Indexed: 05/11/2023]
Abstract
In the melt state at equilibrium, entangled nonconcatenated ring macromolecules adapt more compact conformations compared to their linear analogs and do not form an entanglement network. We show here that, when subjected to uniaxial stretching, they exhibit a unique response, which sets them apart from any other polymer. Remarkably, whereas both linear and ring polymers strain-harden, the viscosity of the rings increases dramatically (the melt thickens) at very low stretch rates due to the unraveling of their conformations along the stretching direction. At high rates, stretching leads to viscosity thinning similar to that of entangled linear polymers, albeit with subtle differences.
Collapse
Affiliation(s)
- Q Huang
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - J Ahn
- Division of Advanced Materials Science and Department of Chemistry, Pohang University of Science and Technology, Pohang 790784, Korea
| | - D Parisi
- Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas (FORTH), Heraklion, Crete 70013, Greece
- Department of Materials Science and Technology, University of Crete, Heraklion, Crete 71003, Greece
| | - T Chang
- Division of Advanced Materials Science and Department of Chemistry, Pohang University of Science and Technology, Pohang 790784, Korea
| | - O Hassager
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
| | - S Panyukov
- P. N. Lebedev Physics Institute, Russian Academy of Sciences, Moscow 117924, Russia
| | - M Rubinstein
- Departments of Mechanical Engineering and Materials Science, Biomedical Engineering, Chemistry, and Physics, Duke University, Durham, North Carolina 27708, USA
| | - D Vlassopoulos
- Institute of Electronic Structure and Laser, Foundation for Research and Technology Hellas (FORTH), Heraklion, Crete 70013, Greece
- Department of Materials Science and Technology, University of Crete, Heraklion, Crete 71003, Greece
| |
Collapse
|
22
|
Marcq G, Mach K, Chang T, Trivedi D, Villers A, Liao J. Biopsie optique des lésions planes de cancer de vessie par endomicroscopie confocale laser et analyse histologique : étude descriptive des critères diagnostiques. Prog Urol 2018. [DOI: 10.1016/j.purol.2018.07.189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
23
|
Rippentrop S, Knudtson J, McLaughlin J, Chang T, Cardenas A, Robinson R. In vitro fertilization outcomes with direct aspiration with single-lumen needles compared to follicular flushing with double-lumen needles for oocyte retrieval in poor responders. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.690] [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]
|
24
|
Chang T, Bondarenko G, Gerami-Naini B, Drenzek J, Rippentrop S, Golos T. An improved 3d in vitro embryo implantation model with nonhuman primate embryo culture beyond day 7 and effect of culture conditions. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.1064] [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: 10/28/2022]
|
25
|
Jeelani R, Chosed R, Zimmerman S, Chang T, Robinson R, Roudebush W. Blastocoel cell-free DNA content is related to changes in ploidy status (chromosomal loss/gain) in day-5 embryos. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.986] [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: 10/28/2022]
|
26
|
Mahdi ES, Bouyssi-Kobar M, Jacobs MB, Murnick J, Chang T, Limperopoulos C. Cerebral Perfusion Is Perturbed by Preterm Birth and Brain Injury. AJNR Am J Neuroradiol 2018; 39:1330-1335. [PMID: 29748205 DOI: 10.3174/ajnr.a5669] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Accepted: 03/23/2018] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Early disturbances in systemic and cerebral hemodynamics are thought to mediate prematurity-related brain injury. However, the extent to which CBF is perturbed by preterm birth is unknown. Our aim was to compare global and regional CBF in preterm infants with and without brain injury on conventional MR imaging using arterial spin-labeling during the third trimester of ex utero life and to examine the relationship between clinical risk factors and CBF. MATERIALS AND METHODS We prospectively enrolled preterm infants younger than 32 weeks' gestational age and <1500 g and performed arterial spin-labeling MR imaging studies. Global and regional CBF in the cerebral cortex, thalami, pons, and cerebellum was quantified. Preterm infants were stratified into those with and without structural brain injury. We further categorized preterm infants by brain injury severity: moderate-severe and mild. RESULTS We studied 78 preterm infants: 31 without brain injury and 47 with brain injury (29 with mild and 18 with moderate-severe injury). Global CBF showed a borderline significant increase with increasing gestational age at birth (P = .05) and trended lower in preterm infants with brain injury (P = .07). Similarly, regional CBF was significantly lower in the right thalamus and midpons (P < .05) and trended lower in the midtemporal, left thalamus, and anterior vermis regions (P < .1) in preterm infants with brain injury. Regional CBF in preterm infants with moderate-severe brain injury trended lower in the midpons, right cerebellar hemisphere, and dentate nuclei compared with mild brain injury (P < .1). In addition, a significant, lower regional CBF was associated with ventilation, sepsis, and cesarean delivery (P < .05). CONCLUSIONS We report early disturbances in global and regional CBF in preterm infants following brain injury. Regional cerebral perfusion alterations were evident in the thalamus and pons, suggesting regional vulnerability of the developing cerebro-cerebellar circuitry.
Collapse
Affiliation(s)
- E S Mahdi
- From the Developing Brain Research Program (E.S.M., M.B.-K., J.M., C.L.), Department of Diagnostic Imaging and Radiology
| | - M Bouyssi-Kobar
- From the Developing Brain Research Program (E.S.M., M.B.-K., J.M., C.L.), Department of Diagnostic Imaging and Radiology
- Department of Neurology (T.C.)
| | - M B Jacobs
- Department of Epidemiology and Biostatistics (M.B.J.), Children's Research Institute, Children's National Health System, Washington, DC
| | - J Murnick
- From the Developing Brain Research Program (E.S.M., M.B.-K., J.M., C.L.), Department of Diagnostic Imaging and Radiology
| | - T Chang
- Department of Neurology (T.C.)
| | - C Limperopoulos
- From the Developing Brain Research Program (E.S.M., M.B.-K., J.M., C.L.), Department of Diagnostic Imaging and Radiology
| |
Collapse
|
27
|
Chang T, Xia J, Xu L, Wang X, Zhu B, Zhang L, Gao X, Chen Y, Li J, Gao H. A genome-wide association study suggests several novel candidate genes for carcass traits in Chinese Simmental beef cattle. Anim Genet 2018; 49:312-316. [DOI: 10.1111/age.12667] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/16/2018] [Indexed: 02/05/2023]
Affiliation(s)
- T. Chang
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - J. Xia
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - L. Xu
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - X. Wang
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - B. Zhu
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - L. Zhang
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - X. Gao
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - Y. Chen
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - J. Li
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| | - H. Gao
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Science; Chinese Academy of Agricultural Sciences; Beijing 100193 China
| |
Collapse
|
28
|
Miao J, Wang X, Bao J, Jin S, Chang T, Xia J, Yang L, Zhu B, Xu L, Zhang L, Gao X, Chen Y, Li J, Gao H. Multimarker and rare variants genomewide association studies for bone weight in Simmental cattle. J Anim Breed Genet 2018; 135:159-169. [DOI: 10.1111/jbg.12326] [Citation(s) in RCA: 6] [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: 09/18/2017] [Accepted: 03/27/2018] [Indexed: 12/30/2022]
Affiliation(s)
- J. Miao
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
- College of Animal Sciences; Fujian Agriculture and Forestry University; Fujian China
| | - X. Wang
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| | - J. Bao
- Veterinary Bureau of Wulagai Precinct in Xilin Gol League; Wulagai China
| | - S. Jin
- Veterinary Bureau of Wulagai Precinct in Xilin Gol League; Wulagai China
| | - T. Chang
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| | - J. Xia
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| | - L. Yang
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province; Sichuan Agricultural University; Sichuan China
| | - B. Zhu
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| | - L. Xu
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| | - L. Zhang
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| | - X. Gao
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| | - Y. Chen
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| | - J. Li
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| | - H. Gao
- Laboratory of Molecular Biology and Bovine Breeding; Institute of Animal Sciences; Chinese Academy of Agricultural Sciences; Beijing China
| |
Collapse
|
29
|
Chang T, Xu Z, Shamp S, Biswas T, Linden P, Kazakov J, Dowlati A, Perry Y, Machtay M. Are We Doing Enough? Examining the Failure Pattern Post-SBRT in T2N0 Non–small Cell Lung Cancer Patients: Single Institution Retrospective Review. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
30
|
Chang T, Darshani A, Manikavasagam P, Arambepola C. Does formal teaching-learning of end-of-life care impact on the knowledge and attitudes of doctors treating patients at the end-of-life? J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
31
|
Chang T, Li W, Ding Z, Cheng S, Liang K, Liu X, Bing T, Shangguan D. Detection of G-Quadruplex Structures Formed by G-Rich Sequences from Rice Genome and Transcriptome Using Combined Probes. Anal Chem 2017; 89:8162-8169. [DOI: 10.1021/acs.analchem.7b01992] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Tianjun Chang
- Department
of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, People’s Republic of China
| | - Weiguo Li
- Department
of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, People’s Republic of China
| | - Zhan Ding
- Department
of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, People’s Republic of China
| | - Shaofei Cheng
- Department
of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, People’s Republic of China
| | - Kun Liang
- Department
of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, People’s Republic of China
| | - Xiangjun Liu
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, CAS Research/Education Center for
Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Tao Bing
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, CAS Research/Education Center for
Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Dihua Shangguan
- Beijing
National Laboratory for Molecular Sciences, Key Laboratory of Analytical
Chemistry for Living Biosystems, CAS Research/Education Center for
Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
32
|
Gerges B, Lu C, Reid S, Chou D, Chang T, Condous G. Sonographic evaluation of immobility of normal and endometriotic ovary in detection of deep endometriosis. Ultrasound Obstet Gynecol 2017; 49:793-798. [PMID: 27281370 DOI: 10.1002/uog.15990] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/23/2016] [Accepted: 06/05/2016] [Indexed: 06/06/2023]
Abstract
OBJECTIVES To examine the association between ovarian immobility and presence of endometriomas and assess the diagnostic accuracy of transvaginal sonographic (TVS) ovarian immobility in the detection of deep infiltrating endometriosis (DIE). METHODS This was a multicenter prospective observational study of women presenting with chronic pelvic pain from January 2009 to March 2015. Women with or without history of endometriosis who were scheduled to undergo laparoscopic surgery for endometriosis gave a detailed history and underwent specialized TVS in a tertiary referral unit prior to laparoscopy. During TVS, ovarian mobility and the presence of endometriomas were assessed. The relationship between TVS ovarian mobility, with or without endometriomas, and DIE was correlated with the gold standard, diagnosis of endometriosis at laparoscopy. RESULTS Included in the analysis were 265 women with preoperative TVS and laparoscopic outcomes. Ovarian immobility on TVS was significantly associated with presence of endometriomas at surgery, with a prevalence of 12.2%, 10.8% and 52.7% for fixation of the left ovary only, the right ovary only and bilateral ovaries, respectively, compared with 4.2%, 3.7% and 7.3% for normal ovaries. The sensitivity, specificity, positive (PPV) and negative (NPV) predictive values and positive and negative likelihood ratios of TVS ovarian immobility for diagnosis at surgery of immobility of ovaries with endometriomas in the left ovary only were 44.4%, 92.3%, 44.4%, 92.3%, 5.8, 0.6, in the right ovary only were 50.0%, 98.5%, 80.0%, 94.2%, 33.0, 0.5 and bilaterally were 74.4%, 68.6%, 72.5%, 70.6%, 2.4, 0.4, while those for diagnosis of immobility of normal ovaries were 25.0%, 87.9%, 8.3%, 96.4%, 2.1, 0.9 for left ovary only, 14.3%, 92.9%, 7.1%, 96.6%, 2.0, 0.9 for right ovary only and 35.7%, 97.2%, 50.0%, 95.0%, 12.6, 0.7 bilaterally, respectively (P < 0.05 except for normal left and right ovaries with P = 0.2 and 0.4, respectively). The sensitivity, specificity, PPV and NPV for performance of ovarian immobility in the prediction of DIE for all women were 58.3%, 74.1%, 60.6%, 72.2% and in the prediction of need for bowel surgery were 78.2%, 71.1%, 41.3%, 92.6%, respectively. CONCLUSIONS There is a significant association between ovarian immobility and the presence of endometriomas. Ovarian immobility as a sonographic 'soft marker' of DIE performs better in the presence of endometriomas compared with in normal ovaries. Copyright © 2016 ISUOG. Published by John Wiley & Sons Ltd.
Collapse
Affiliation(s)
- B Gerges
- Acute Gynaecology, Early Pregnancy and Advanced Endosurgery Unit, Sydney Medical School Nepean, University of Sydney, Nepean Hospital, Penrith, NSW, Australia
| | - C Lu
- Department of Computer Sciences, University of Wales, Aberystwyth, UK
| | - S Reid
- Acute Gynaecology, Early Pregnancy and Advanced Endosurgery Unit, Sydney Medical School Nepean, University of Sydney, Nepean Hospital, Penrith, NSW, Australia
| | - D Chou
- Sydney Women's Endosurgery Centre (SWEC), Hurstville, NSW, Australia
| | - T Chang
- Nureva Women's Specialist Health, Campbelltown, NSW, Australia
- Laparoscopic Surgery for General Gynaecologist (LaSGeG), Sydney, NSW, Australia
| | - G Condous
- Acute Gynaecology, Early Pregnancy and Advanced Endosurgery Unit, Sydney Medical School Nepean, University of Sydney, Nepean Hospital, Penrith, NSW, Australia
- Laparoscopic Surgery for General Gynaecologist (LaSGeG), Sydney, NSW, Australia
- OMNI Gynaecological Care Centre for Women's Ultrasound and Early Pregnancy, St Leonards, NSW, Australia
| |
Collapse
|
33
|
Li W, Zhang L, Ding Z, Wang G, Zhang Y, Gong H, Chang T, Zhang Y. De novo sequencing and comparative transcriptome analysis of the male and hermaphroditic flowers provide insights into the regulation of flower formation in andromonoecious taihangia rupestris. BMC Plant Biol 2017; 17:54. [PMID: 28241786 PMCID: PMC5329940 DOI: 10.1186/s12870-017-0990-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 01/31/2017] [Indexed: 05/29/2023]
Abstract
BACKGROUND Taihangia rupestris, an andromonoecious plant species, bears both male and hermaphroditic flowers within the same individual. However, the establishment and development of male and hermaphroditic flowers in andromonoecious Taihangia remain poorly understood, due to the limited genetic and sequence information. To investigate the potential molecular mechanism in the regulation of Taihangia flower formation, we used de novo RNA sequencing to compare the transcriptome profiles of male and hermaphroditic flowers at early and late developmental stages. RESULTS Four cDNA libraries, including male floral bud, hermaphroditic floral bud, male flower, and hermaphroditic flower, were constructed and sequenced by using the Illumina RNA-Seq method. Totally, 84,596,426 qualified Illumina reads were obtained and then assembled into 59,064 unigenes, of which 24,753 unigenes were annotated in the NCBI non-redundant protein database. In addition, 12,214, 7,153, and 8,115 unigenes were assigned into 53 Gene Ontology (GO) functional groups, 25 Clusters of Orthologous Group (COG) categories, and 126 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, respectively. By pairwise comparison of unigene abundance between the samples, we identified 1,668 differential expressed genes (DEGs), including 176 transcription factors (TFs) between the male and hermaphroditic flowers. At the early developmental stage, we found 263 up-regulated genes and 436 down-regulated genes expressed in hermaphroditic floral buds, while 844 up-regulated genes and 314 down-regulated genes were detected in hermaphroditic flowers at the late developmental stage. GO and KEGG enrichment analyses showed that a large number of DEGs were associated with a wide range of functions, including cell cycle, epigenetic processes, flower development, and biosynthesis of unsaturated fatty acid pathway. Finally, real-time quantitative PCR was conducted to validate the DEGs identified in the present study. CONCLUSION In this study, transcriptome data of this rare andromonoecious Taihangia were reported for the first time. Comparative transcriptome analysis revealed the significant differences in gene expression profiles between male and hermaphroditic flowers at early and late developmental stages. The transcriptome data of Taihangia would be helpful to improve the understanding of the underlying molecular mechanisms in regulation of flower formation and unisexual flower establishment in andromonoecious plants.
Collapse
Affiliation(s)
- Weiguo Li
- College of Life Science, Changchun Normal University, Changchun, 130032 Jilin China
- College of Resource and Environment, Henan Polytechnic University, Jiaozuo, 454000 Henan China
| | - Lihui Zhang
- College of Life Science, Changchun Normal University, Changchun, 130032 Jilin China
| | - Zhan Ding
- College of Resource and Environment, Henan Polytechnic University, Jiaozuo, 454000 Henan China
| | - Guodong Wang
- College of Resource and Environment, Henan Polytechnic University, Jiaozuo, 454000 Henan China
| | - Yandi Zhang
- College of Resource and Environment, Henan Polytechnic University, Jiaozuo, 454000 Henan China
| | - Hongmei Gong
- College of Resource and Environment, Henan Polytechnic University, Jiaozuo, 454000 Henan China
| | - Tianjun Chang
- College of Resource and Environment, Henan Polytechnic University, Jiaozuo, 454000 Henan China
| | - Yanwen Zhang
- College of Life Science, Changchun Normal University, Changchun, 130032 Jilin China
| |
Collapse
|
34
|
Dilrukshi MDSA, Sandakumari GVN, Abeysundara PK, Chang T. Craniopharyngioma presenting with severe hyponatremia, hyponatremia-induced myopathy, and panhypopituitarism: a case report. J Med Case Rep 2017; 11:31. [PMID: 28160775 PMCID: PMC5292142 DOI: 10.1186/s13256-017-1210-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 01/12/2017] [Indexed: 11/10/2022] Open
Abstract
Background Craniopharyngiomas are rare intracranial tumors commonly presenting with neurological symptoms. Reports of severe hyponatremia as a presenting manifestation of a craniopharyngioma and hyponatremia-induced myopathy are rare. We report the case of a patient with craniopharyngioma presenting with severe hyponatremia, panhypopituitarism, and hyponatremia-induced myopathy. Case presentation A 52-year-old Sri Lankan man presented with anorexia, nausea, fatigue, generalized muscle weakness, and cramps for 1 week. The onset of his illness had been preceded by vomiting and diarrhea for 1 day which he attributed to food poisoning. On examination, he had an apathetic disposition with a generalized “sallow complexion.” He was not dehydrated. Apart from reduced muscle power (4/5) and hyporeflexia, the neurological examination was normal. His serum sodium was 102 mmol/l; potassium 4.1 mmol/l; chloride 63 mmol/l; plasma osmolality 272 mosm/KgH2O; urine osmolality 642 mosm/KgH2O; and urine sodium 79 mmol/l. His creatine phosphokinase was 12,400 U/l, lactate dehydrogenase 628 U/l, aspartate aminotransferase 360 U/l, and alanine aminotransferase 64 U/l. His hormone profile revealed panhypopituitarism. An electromyogram showed nonspecific abnormalities while a muscle biopsy did not show any pathology. Magnetic resonance imaging of his brain demonstrated a well-defined craniopharyngioma with suprasellar extension. His pituitary gland was compressed and the pituitary stalk was displaced by the tumor. He had marked improvement in muscle power and rapid reduction of serum creatine phosphokinase levels paralleling the correction of severe hyponatremia, even before the initiation of hormone replacement. Conclusions This case illustrates the rare presentation of severe hyponatremia and hyponatremia-induced myopathy in patients with craniopharyngioma, awareness of which would facilitate early appropriate investigations and treatment.
Collapse
Affiliation(s)
- M D S A Dilrukshi
- University Medical Unit, National Hospital of Sri Lanka, Colombo 10, Sri Lanka.
| | - G V N Sandakumari
- University Medical Unit, National Hospital of Sri Lanka, Colombo 10, Sri Lanka
| | - P K Abeysundara
- University Medical Unit, National Hospital of Sri Lanka, Colombo 10, Sri Lanka
| | - T Chang
- University Medical Unit, National Hospital of Sri Lanka, Colombo 10, Sri Lanka.,Department of Clinical Medicine, University of Colombo, Colombo, Sri Lanka
| |
Collapse
|
35
|
Gerges B, Reid S, Chou D, Chang T, Condous G. Prospective Validation of the Ultrasound Based Endometriosis Staging System (UBESS). J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
36
|
Kim Y, Patwardhan K, Beichel R, Smith B, Ulrich E, Mart C, Chang T, Plichta K, Buatti J. Impact of Contouring Accuracy on Expected Tumor Control Probability for Head and Neck Cancer: Semiautomated Segmentation Versus Manual Contouring. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.1993] [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]
|
37
|
Abstract
The distribution of Lipiodol in the liver and lungs following arterial or portal injection was studied in normal (n = 55) and cirrhotic rats (n = 20). Using magnified xeroradiography and radioisotope labeled tracers, it was found that Lipiodol was deposited mainly in the liver and lung after either arterial or portal administration. In control rats after arterial injection, deposits in the lung peaked after 2 hours and gradually declined over 48 hours; whereas after portal injection, the deposit steadily increased for 48 hours. Twenty-five percent of cirrhotic rats demonstrated a Lipiodol-induced miliary pattern in the lung. An increased number of portosystemic shunts in cirrhotic rats was also noted. These results suggest that cirrhosis of the liver may be a potential risk factor for developing pulmonary complications after Lipiodol administration.
Collapse
|
38
|
Atukorala I, Pathmeswaran A, Chang T, Zhang Y, Hunter D. SAT0452 Do Traditional Risk Factors for Knee Osteoarthritis Predict Pain Flares in Knee Osteoarthritis?: Table 1. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.3335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
39
|
Chang T, Wang L, Zhao K, Ge Y, He M, Li G. Duplex Identification of Staphylococcus aureus by Aptamer and Gold Nanoparticles. J Nanosci Nanotechnol 2016; 16:5513-5519. [PMID: 27427591 DOI: 10.1166/jnn.2016.11656] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Staphylococcus aureus is the top common pathogen causing infections and food poisoning. Identification of S. aureus is crucial for the disease diagnosis and regulation of food hygiene. Herein, we report an aptamer-AuNPs based method for duplex identification of S. aureus. Using AuNPs as an indicator, SA23, an aptamer against S. aureus, can well identify its target from Escherichia coli, Listeria monocytogenes and Pseudomonas aeruginosa. Furthermore, we find citrate-coated AuNPs can strongly bind to S. aureus, but not bind to Salmonella enterica and Proteus mirabilis, which leads to different color changes in salt solution. This colorimetric response is capable of distinguishing S. aureus from S. enteritidis and P. mirabilis. Thus, using the aptasensor and AuNPs together, S. aureus can be accurately identified from the common pathogens. This duplex identification system is a promising platform for simple visual identification of S. aureus. Additionally, in the aptasensing process, bacteria are incubated with aptamers and then be removed before the aptamers adding to AuNPs, which may avoid the interactions between bacteria and AuNPs. This strategy can be potentially applied in principle to detect other cells by AuNPs-based aptasensors.
Collapse
|
40
|
Chua J, Malavige G, Chang T, Ng M. Minimisation study of dengue prognostic biomarker panel test. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.923] [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: 10/22/2022] Open
|
41
|
Lohitharajah J, Malavige G, Arembepola C, Wanigasinghe J, Gamage R, Gunaratne P, Ratnayake P, Chang T. Viral aetiologies of acute encephalitis in a hospital-based population in Sri Lanka. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.943] [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: 10/22/2022] Open
|
42
|
Ge F, Lin H, Liu Y, Li M, Guo R, Ruan Z, Chang T. Dual antiplatelet therapy after stroke or transient ischaemic attack - how long to treat? The duration of aspirin plus clopidogrel in stroke or transient ischaemic attack: a systematic review and meta-analysis. Eur J Neurol 2016; 23:1051-7. [PMID: 27021849 DOI: 10.1111/ene.12982] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 01/18/2016] [Indexed: 11/27/2022]
Affiliation(s)
- F. Ge
- Department of Neurology; Tangdu Hospital; Fourth Military Medical University; Shaanxi Province China
| | - H. Lin
- Department of Neurology; Tangdu Hospital; Fourth Military Medical University; Shaanxi Province China
| | - Y. Liu
- Department of Neurology; Tangdu Hospital; Fourth Military Medical University; Shaanxi Province China
| | - M. Li
- Department of Neurology; Tangdu Hospital; Fourth Military Medical University; Shaanxi Province China
| | - R. Guo
- Department of Neurology; Tangdu Hospital; Fourth Military Medical University; Shaanxi Province China
| | - Z. Ruan
- Department of Neurology; Tangdu Hospital; Fourth Military Medical University; Shaanxi Province China
| | - T. Chang
- Department of Neurology; Tangdu Hospital; Fourth Military Medical University; Shaanxi Province China
| |
Collapse
|
43
|
Chang T, Gong H, Ding P, Liu X, Li W, Bing T, Cao Z, Shangguan D. Inside Cover: Activity Enhancement of G-Quadruplex/Hemin DNAzyme by Flanking d(CCC) (Chem. Eur. J. 12/2016). Chemistry 2016. [DOI: 10.1002/chem.201600251] [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: 11/09/2022]
Affiliation(s)
- Tianjun Chang
- Institute of Resources and Environment; Henan Polytechnic University; Jiaozuo 454000 P.R. China
| | - Hongmei Gong
- Institute of Resources and Environment; Henan Polytechnic University; Jiaozuo 454000 P.R. China
| | - Pi Ding
- Institute of Resources and Environment; Henan Polytechnic University; Jiaozuo 454000 P.R. China
| | - Xiangjun Liu
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Weiguo Li
- Institute of Resources and Environment; Henan Polytechnic University; Jiaozuo 454000 P.R. China
| | - Tao Bing
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Zehui Cao
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Dihua Shangguan
- Beijing National Laboratory for Molecular Sciences; Key Laboratory of Analytical Chemistry for Living Biosystems; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P.R. China
| |
Collapse
|
44
|
Kaushal P, Caridi T, Lynskey G, Buckley D, Chang T, Field D, Banovac F, Spies J, Kim A. Complications of prolonged arterial sheath placement after visceral angiography. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
45
|
Hijaz S, Solomon A, Kosanovich C, Lynskey G, Buckley D, Caridi T, Chang T, Kim A. MRI characteristics of HCC and response to drug-eluting bead TACE. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.333] [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: 10/22/2022] Open
|
46
|
Dasilva D, Sparks A, Kim A, Lynskey G, Spies J, Chang T, Buckley D, Caridi T. Labeling interventional radiology drains to prevent medical errors and improve patient care. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|
47
|
Chang T, Gong H, Ding P, Liu X, Li W, Bing T, Cao Z, Shangguan D. Activity Enhancement of G-Quadruplex/Hemin DNAzyme by Flanking d(CCC). Chemistry 2016; 22:4015-21. [PMID: 26813684 DOI: 10.1002/chem.201504797] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Indexed: 12/17/2022]
Abstract
G-quadruplex (G4)/hemin DNAzymes have been extensively applied in bioanalysis and molecular devices. However, their catalytic activity is still much lower than that of proteinous enzymes. The G4/hemin DNAzyme activity is correlated with the G4 conformations and the solution conditions. However, little is known about the effect of the flanking sequences on the activity, though they are important parts of G4s. Here, we report sequences containing d(CCC), flanked on both ends of the G4-core sequences remarkably enhance their DNAzyme activity. By using circular dichroism and UV-visible spectroscopy, the d(CCC) flanking sequences were demonstrated to improve the hemin binding affinity to G4s instead of increasing the parallel G4 formation, which might explain the enhanced DNAzyme activity. Meanwhile, the increased hemin binding ability promoted the degradation of hemin within the DNAzyme by H2O2. Furthermore, the DNAzyme with d(CCC) flanking sequences showed strong tolerance to pH value changes, which makes it more suitable for applications requiring wide pH conditions. The results highlight the influence of the flanking sequences on the DNAzyme activity and provide insightful information for the design of highly active DNAzymes.
Collapse
Affiliation(s)
- Tianjun Chang
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, P.R. China
| | - Hongmei Gong
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, P.R. China
| | - Pi Ding
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, P.R. China
| | - Xiangjun Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Weiguo Li
- Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, P.R. China
| | - Tao Bing
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Zehui Cao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Dihua Shangguan
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.
| |
Collapse
|
48
|
Chang T. Evaluation of possible predicting factors of adenotonsillectomy for pediatric OSAS. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.471] [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: 10/22/2022]
|
49
|
Hopkins PA, Little H, Ward S, Harrington C, Feehan A, Peters K, Mcloone A, Dowling M, Chang T, Bell C. The clinical and operational consequences of prolonged occupancy strain and the use of non-intensive care beds to deliver critical care in a central london teaching hospital. Intensive Care Med Exp 2015. [PMCID: PMC4796228 DOI: 10.1186/2197-425x-3-s1-a477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
50
|
Chang T, Moloney T, Jacobson L, Malavige N, Lohitharajah J, Peach S, Woodhall M, Waters P, Vincent A. Autoantibody-associated autoimmune-encephalitis in Sri Lankan patients. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.675] [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: 10/22/2022]
|