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Chan D, Stewart R, Kerr A, Dicker B, Kyle C, Adamson P, Devlin G, Edmond J, El-Jack S, Elliott J, Fisher N, Flynn C, Lee M, Liao Y, Rhodes M, Scott T, Smith T, Stiles M, Swain A, Todd V, Webster M, Williams M, White H, Somaratne J. The Impact of a National COVID-19 Lockdown on Acute Coronary Syndrome Hospitalisations in New Zealand: an ANZACS-QI study. Heart Lung Circ 2021. [PMCID: PMC8203216 DOI: 10.1016/j.hlc.2021.05.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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102
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Liao Y, Lee M, Poppe K, Kerr A, Stewart R. Prediction of Statin Non-Adherence After Hospitalisation for an Acute Coronary Syndrome. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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103
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Kim SH, Lee M, Choi KH, Lee DK, Oh JN, Choe G, Jeong J, Lee CK. 97 Function of species-specific OCT4 reporter system during porcine embryo development. Reprod Fertil Dev 2021. [DOI: 10.1071/rdv33n2ab97] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The present study examined the activity and function of pig OCT4 (POU5F1) enhancer in porcine early embryo development. OCT4 is one of the master regulators for the pluripotency of early mammalian embryonic development and embryonic stem cells. It has two regulatory elements: distal enhancer (DE) and proximal enhancer (PE) in the upstream regulatory region. They are activated under different conditions such as naïve and primed. It is known that two enhancers are activated to produce OCT4 simultaneously or sequentially depending on the state of pluripotency. Many porcine OCT4 upstream region-based reporter systems have been reported because this is a necessary part of studying porcine-specific pluripotency. However, the porcine-specific OCT4 reporter system has never been transfected and functionally tested during porcine early embryo development. We performed functional tests of the previously established porcine-specific OCT4 reporter system in the early embryo development stage. Porcine embryos were micro-injected with the pOCT4-ΔPE-eGFP (DE-GFP) containing a distal enhancer and core promoter and pOCT4-ΔDE-DsRed2 (PE-RFP) containing a proximal enhancer and core promoter. They were cultured in PZM-3 at 39°C in a humidified atmosphere, 5% CO2, and 5% O2 for 168h. Fifty of the 100 embryos were injected with OCT4 reporter system as treatment groups and the other 50 were not injected (control groups). We analysed mRNA and protein expression of GFP and RFP using quantitative real-time PCR and confocal microscopy by developmental stages. The introduced reporter system could function beginning with the 4-cell stage. The expression of GFP and RFP was observed simultaneously in the early embryonic development stage up to blastocyst, indicating that porcine OCT4 was produced by distal and proximal enhancers, unlike mouse Oct4 expression, which was only controlled by the distal enhancer during early embryo development. Therefore, the mechanisms and functions of distal and proximal enhancers of porcine OCT4 were different from those of the mouse. This is similar to results of the previous experiment using porcine-induced pluripotent stem cells, which suggest that porcine OCT4 is expressed by two enhancers and in a stage-specific manner during reprogramming and that pigs do not use only one enhancer in pluripotent states, but two enhancers at the same time, and there is only a difference in degree. This work showed that the porcine OCT4 reporter system enables non-destructive analysis during early embryo development and it could be applied to study species-specific pluripotency and to help the establishment of naïve embryonic stem cells in the pig.
This work was supported by the BK21 Plus Program, the National Research Foundation of Korea (NRF) grant funded by the Korea government (NRF-2019R1C1C1004514), the Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through the Development of High Value-Added Food Technology Program funded by the Ministry of Agriculture, Food, and Rural Affairs (MAFRA; 118042-03-3-HD020).
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104
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Chan D, Poppe K, Lund M, Lee M, Choi Y, Kerr A, Doughty R. Validation of Heart Failure Discharge Coding Utilising the PEOPLE Study and ADHF Registry. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.05.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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105
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Lee M, Yan B. DynamX Bioadaptor, a Unique “Uncaging” Platform for Coronary Artery Revascularisation: Ongoing Clinical Results From the DynamX Hong Kong Registry. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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106
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Wei D, Kerr A, Lee M. Revascularisation and Outcomes After Acute Coronary Syndromes in Patients with Prior Coronary Artery Bypass Grafting. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.05.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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107
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Lee M, Oh JN, Lee DK, Choi KH, Kim SH, Choe GC, Jeong J, Lee CK. 42 Disruption of endogenous SOX2 during porcine embryo development using the CRIPSR/Cas9 system. Reprod Fertil Dev 2021. [DOI: 10.1071/rdv33n2ab42] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The lineage specification of the pre-implantation embryo is important to understand the developmental process, but it remains unclear because the expression of lineage-specific genes is distinct among species. Pigs have genetic and physiological traits similar to humans; however, there are differences in gene expression during the pre-implantation stage. To select a candidate gene that affects the formation of the inner cell mass (ICM) in porcine embryo, we conducted preliminary experiments. First, we measured the expression level of candidate genes for lineage specification in parthenogenetic-activated embryos. The expression of pluripotent genes peaked on Day 3 and thereafter decreased gradually. Next, we conducted immunocytochemistry. OCT4 was expressed in all cells in morula and Day 5 blastocyst, but some Day 7 blastocysts expressed OCT4 in both ICM and trophectoderm (TE), whereas others expressed OCT4 only in ICM. NANOG was not observed in the morula stage, whereas SOX2 was located in a restricted area. To examine the effect of SOX2 in ICM formation, we injected plasmid expressing Cas9 and guide (g)RNA using Lipofectamine for efficient transgene expression at the 2-cell stage to increase viability by inducing mosaicism. The expression of enhanced green fluorescent protein (EGFP) contained in the plasmid confirmed that the plasmid was operating normally. In SOX2-knockout (KO) early blastocysts, the numbers of total cells and SOX2- and NANOG-positive cells were greatly decreased, while OCT4 was expressed in most cells. As in early blastocysts, SOX2-KO late blastocysts had fewer cells expressing SOX2, NANOG, and SOX17 than control. To identify the transcriptional consequences of SOX2 reduction, we performed quantitative PCR analysis on non-injected and PX458-gRNA injected blastocysts. Injection of PX458-gRNA resulted in downregulation of NANOG, SOX17, and SMAD7, but not SOX2 and OCT4. Furthermore, proliferation-associated genes were downregulated in injected blastocysts. In conclusion, SOX2-targeted porcine embryos showed blastocoel formation, the inner cell mass formed poorly, and embryos have inefficient cells. Also, the depletion of SOX2 in porcine blastocysts downregulated pluripotent genes and proliferation genes.
This work was supported by the BK21 Plus Program, the National Research Foundation of Korea (NRF) grant funded by the Korea government (NRF-2019R1C1C1004514), the Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through the Development of High Value-Added Food Technology Program funded by the Ministry of Agriculture, Food, and Rural Affairs (MAFRA; 118042-03-3-HD020).
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108
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Khan A, Lee M, Watson A, Maxwell S, Cooper M, Murphy A, Jandeleit-Dahm K. Transcription Factor cFOS Mediated Foam Cell Formation in Diabetes Associated Atherosclerosis. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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109
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Lee M, Ward J, Burchill L, Wilson W, Grigg L. Improved Clinic Attendance Rates With Introduction of Telehealth in a Tertiary Adult Congenital Heart Disease Clinic. Heart Lung Circ 2021. [PMCID: PMC8324093 DOI: 10.1016/j.hlc.2021.06.378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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110
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Lee M, Lefkovits J, Joshi S, Pearson M, Better N. Large Multi-Vessel Coronary Artery Aneurysms: An Unusual Cause of Chest Pain. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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111
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Rosłoń IE, Dolleman RJ, Licona H, Lee M, Šiškins M, Lebius H, Madauß L, Schleberger M, Alijani F, van der Zant HSJ, Steeneken PG. High-frequency gas effusion through nanopores in suspended graphene. Nat Commun 2020; 11:6025. [PMID: 33247123 PMCID: PMC7695699 DOI: 10.1038/s41467-020-19893-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Accepted: 10/29/2020] [Indexed: 12/02/2022] Open
Abstract
Porous, atomically thin graphene membranes have interesting properties for filtration and sieving applications. Here, graphene membranes are used to pump gases through nanopores using optothermal forces, enabling the study of gas flow through nanopores at frequencies above 100 kHz. At these frequencies, the motion of graphene is closely linked to the dynamic gas flow through the nanopore and can thus be used to study gas permeation at the nanoscale. By monitoring the time delay between the actuation force and the membrane mechanical motion, the permeation time-constants of various gases through pores with diameters from 10–400 nm are shown to be significantly different. Thus, a method is presented for differentiating gases based on their molecular mass and for studying gas flow mechanisms. The presented microscopic effusion-based gas sensing methodology provides a nanomechanical alternative for large-scale mass-spectrometry and optical spectrometry based gas characterisation methods. Atomically thin porous graphene is promising for filtration and sieving applications. Here the authors, using a laser-actuated micro-drum device of bilayer graphene with controlled number of nanopores, and measuring the permeation rate of different gases, show that it can also be used for permeation-based sensing.
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112
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Ikeda S, Muto M, Sato T, Lee M, Olsen S. 310P Genomic biomarker detection in East Asian clinical practice using circulating tumour DNA (ctDNA) from patients with gastrointestinal (GI) tract cancers. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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113
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Cho B, Loong H, Tsai CM, Teo M, Park K, Kim H, Lee M, Olsen S. 308P The genomic landscape of non-small cell lung cancer (NSCLC) in East Asia using circulating tumour DNA (ctDNA) in clinical practice. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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114
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Chiu S, Nayak R, Duan L, Shen A, Lee M. Triggers of stress cardiomyopathy and their association with clinical outcomes. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.1811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Stress cardiomyopathy can be a result of physical stress, emotional stress, or both. Whether the type of trigger affects clinical outcomes is not well studied.
Purpose
The objectives of this study were to identify the prevalence of emotional and physical stressors and to assess differences in patient characteristics and mortality based on the type of trigger.
Methods
We conducted a retrospective review of 523 consecutive patients who presented to our institution from 2006 to 2016. All patients presented with acute coronary syndrome. Triggers for stress cardiomyopathy were abstracted from reviewing patients' medical records. Patients were categorized into those with 1) physical trigger, 2) emotional trigger, 3) both physical and emotional trigger, or 4) no known trigger. Baseline characteristics and clinical outcomes were reported.
Results
Among 523 patients with stress cardiomyopathy, 151 (28.9%) had a physical trigger, 189 (36.1%) had an emotional trigger, 30 (5.7%) had both physical and emotional triggers, and 153 (29.3%) had no known triggers identified. Men comprised the higher proportion of patients with physical triggers. Comorbidities including diabetes, pulmonary disease, chronic kidney disease and hypothyroidism were more prevalent among patients with physical triggers. Compared to patients with no obvious triggers, patients with a physical trigger had a much higher mortality rate (hazard ratio 2.0, 95% CI 1.2–3.3, p=0.007), whereas patients with an emotional trigger had significantly lower mortality (hazard ratio 0.40, 95% CI 0.21–0.89, p=0.007).
Conclusion
Different triggers for stress cardiomyopathy is associated with different baseline characteristics and clinical outcomes. Overall survival is worst in the group with an identified physical trigger.
Figure 1
Funding Acknowledgement
Type of funding source: None
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Zukauskaite R, Rumley C, Hansen C, Jameson M, Trada Y, Johansen J, Gyldenkerne N, Eriksen J, Aly F, Heinke M, Christensen R, Lee M, Brink C, Holloway L. PO-0799: Target delineation uncertainties using MRI for H&N cancer patients. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00816-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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116
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Lee M, Tseng C, Detsky J, Husain Z, Ruschin M, Lee Y, Myrehaug S, Sahgal A, Soliman H. Rates Of Radionecrosis In Re-Irradiation Of Brain Metastases Using Hypofractionated Stereotactic Radiotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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117
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Nguyen A, Schweis F, Lee M, Sheikh J, Samant S. A002 SHORT-TERM CARDIAC OUTCOMES: ASPIRIN DESENSITIZATION IN ACUTE CORONARY SYNDROME. Ann Allergy Asthma Immunol 2020. [DOI: 10.1016/j.anai.2020.08.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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118
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Austin J, Ye C, Lee M, Chao S. 339 Does Shock Index, Pediatric Age-Adjusted Help Predict Mortality by Trauma Center Type? Ann Emerg Med 2020. [DOI: 10.1016/j.annemergmed.2020.09.354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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119
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Kwon KY, Lee M, Ju H, Im K, Ahn MY. Clinical characteristics of dizzy patients with early Parkinson's disease. Parkinsonism Relat Disord 2020. [DOI: 10.1016/j.parkreldis.2020.06.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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120
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Jenkins W, Rodriguez C, Lee M, Van Ham B, Slomer L, Adjei Boakye E, Stierwalt T, Grundy S, Dandurand M, Harrison-Ladage H. Rural-urban Differences in Illinois Health Department Capability to Address the COVID-19 Pandemic. Ann Epidemiol 2020. [DOI: 10.1016/j.annepidem.2020.06.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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121
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Biagi M, Vialichka A, Jurkovic M, Wu T, Shajee A, Lee M, Patel S, Mendes RE, Wenzler E. Activity of Cefiderocol Alone and in Combination with Levofloxacin, Minocycline, Polymyxin B, or Trimethoprim-Sulfamethoxazole against Multidrug-Resistant Stenotrophomonas maltophilia. Antimicrob Agents Chemother 2020; 64:e00559-20. [PMID: 32571820 PMCID: PMC7449157 DOI: 10.1128/aac.00559-20] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 06/13/2020] [Indexed: 12/29/2022] Open
Abstract
The production of an L1 metallo-β-lactamase and an L2 serine active-site β-lactamase precludes the use of β-lactams for the treatment of Stenotrophomonas maltophilia infections. Preclinical data suggest that cefiderocol is the first approved β-lactam with reliable activity against S. maltophilia, but data on strains resistant to current first-line agents are limited, and no studies have assessed cefiderocol-based combinations. The objective of this study was to evaluate and compare the in vitro activity of cefiderocol alone and in combination with levofloxacin, minocycline, polymyxin B, or trimethoprim-sulfamethoxazole (TMP-SMZ) against a collection of highly resistant clinical S. maltophilia isolates. For this purpose, the MICs of cefiderocol, ceftazidime, levofloxacin, minocycline, polymyxin B, and TMP-SMZ for 37 S. maltophilia isolates not susceptible to levofloxacin and/or TMP-SMZ were determined. Nine strains with various cefiderocol MICs were then tested in time-kill experiments with cefiderocol alone and in combination with comparators. The only agents for which susceptibility rates exceeded 40% were cefiderocol (100%) and minocycline (97.3%). Cefiderocol displayed the lowest MIC50 and MIC90 values (0.125 and 0.5 mg/liter, respectively). In time-kill experiments, synergy was observed when cefiderocol was combined with levofloxacin, minocycline, polymyxin B, or TMP-SMZ against 4/9 (44.4%), 6/9 (66.7%), 5/9 (55.5%), and 6/9 (66.7%) isolates, respectively. These data suggest that cefiderocol displays potent in vitro activity against S. maltophilia, including strains resistant to currently preferred agents. Future dynamic and in vivo studies of cefiderocol alone and in combination are warranted to further define cefiderocol's synergistic capabilities and its place in therapy for S. maltophilia infections.
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Kim J, Youm C, Son M, Lee M, Park H, Noh B. Kinematic sequence and time lag for pitch and lob shots in female pro-golfers. INT J PERF ANAL SPOR 2020. [DOI: 10.1080/24748668.2020.1790235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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123
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Lee M, Shannon J, Jain V, Joost S, Kasper M, Corcoran D, Gregory S, MacLeod A. 251 Skin epidermal keratinocyte differentiation-associated processes regulate homeostatic antiviral protein expression. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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124
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Suwanpradid J, Lee M, Hoang P, Kwock J, Floyd L, Smith J, Yin Z, Atwater A, Rajagopal S, Kedl R, Corcoran D, MacLeod A. 014 IL-27 induces IL-15 production to facilitate T cell survival in allergic contact dermatitis. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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125
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Lee MS, Ryoo BY, Hsu CH, Numata K, Stein S, Verret W, Hack SP, Spahn J, Liu B, Abdullah H, Wang Y, He AR, Lee KH, Bang YJ, Bendell J, Chao Y, Chen JS, Chung HC, Davis SL, Dev A, Gane E, George B, He AR, Hochster H, Hsu CH, Ikeda M, Lee J, Lee M, Mahipal A, Manji G, Morimoto M, Numata K, Pishvaian M, Qin S, Ryan D, Ryoo BY, Sasahira N, Stein S, Strickler J, Tebbutt N. Atezolizumab with or without bevacizumab in unresectable hepatocellular carcinoma (GO30140): an open-label, multicentre, phase 1b study. Lancet Oncol 2020. [DOI: 10.1016/s1470-2045(20)30156-x 10.1016/s1470-2045(20)30156-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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