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  1. Article ; Online: Mitral annular calcification: The incremental diagnostic value of 3D transesophageal echocardiography.

    Yirerong, Juliet / Wen, Jason / Jain, Ankit

    Echocardiography (Mount Kisco, N.Y.)

    2022  Volume 39, Issue 7, Page(s) 954–956

    Abstract: Three-dimensional (3D) echocardiography is an important tool in the evaluation of mitral valve anatomy. We illustrate a case of a 67-year-old female who was admitted for non-ST-elevation myocardial infarction (NSTEMI) and underwent two-vessel coronary ... ...

    Abstract Three-dimensional (3D) echocardiography is an important tool in the evaluation of mitral valve anatomy. We illustrate a case of a 67-year-old female who was admitted for non-ST-elevation myocardial infarction (NSTEMI) and underwent two-vessel coronary artery bypass grafting for surgical disease. Her two-dimensional (2D) echocardiographic images intraoperatively demonstrated a mass on the posterior mitral valve leaflet which created a diagnostic challenge; 3D transesophageal imaging was crucial in identifying the true nature of the pathology to be mitral annular calcification with supra-annular extension.
    MeSH term(s) Aged ; Echocardiography, Three-Dimensional/methods ; Echocardiography, Transesophageal/methods ; Female ; Heart Valve Diseases/pathology ; Humans ; Mitral Valve/diagnostic imaging ; Mitral Valve/pathology ; Mitral Valve/surgery ; Mitral Valve Insufficiency/surgery
    Language English
    Publishing date 2022-06-24
    Publishing country United States
    Document type Case Reports
    ZDB-ID 843645-9
    ISSN 1540-8175 ; 0742-2822
    ISSN (online) 1540-8175
    ISSN 0742-2822
    DOI 10.1111/echo.15415
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Ingression-type cell migration drives vegetal endoderm internalisation in the

    Wen, Jason Wh / Winklbauer, Rudolf

    eLife

    2017  Volume 6

    Abstract: During amphibian gastrulation, presumptive endoderm is internalised as part of vegetal rotation, a large-scale movement that encompasses the whole vegetal half of the embryo. It has been considered a gastrulation process unique to amphibians, but we show ...

    Abstract During amphibian gastrulation, presumptive endoderm is internalised as part of vegetal rotation, a large-scale movement that encompasses the whole vegetal half of the embryo. It has been considered a gastrulation process unique to amphibians, but we show that at the cell level, endoderm internalisation exhibits characteristics reminiscent of bottle cell formation and ingression, known mechanisms of germ layer internalisation. During ingression proper, cells leave a single-layered epithelium. In vegetal rotation, the process occurs in a multilayered cell mass; we refer to it as ingression-type cell migration. Endoderm cells move by amoeboid shape changes, but in contrast to other instances of amoeboid migration, trailing edge retraction involves ephrinB1-dependent macropinocytosis and
    MeSH term(s) Animals ; Cell Movement ; Embryo, Nonmammalian/cytology ; Endoderm/cytology ; Endoderm/embryology ; Endoderm/metabolism ; Gastrula/cytology ; Gastrula/metabolism ; Xenopus laevis/embryology ; Xenopus laevis/metabolism
    Language English
    Publishing date 2017-08-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2687154-3
    ISSN 2050-084X ; 2050-084X
    ISSN (online) 2050-084X
    ISSN 2050-084X
    DOI 10.7554/eLife.27190
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Adult progenitor rejuvenation with embryonic factors.

    Wang, Peng / Liu, Xupeng / Chen, Yu / Jun-Hao, Elwin Tan / Yao, Ziyue / Min-Wen, Jason Chua / Yan-Jiang, Benjamin Chua / Ma, Shilin / Ma, Wenwu / Luo, Lanfang / Guo, Luyao / Song, Dan / Shyh-Chang, Ng

    Cell proliferation

    2023  Volume 56, Issue 5, Page(s) e13459

    Abstract: During ageing, adult stem cells' regenerative properties decline, as they undergo replicative senescence and lose both their proliferative and differentiation capacities. In contrast, embryonic and foetal progenitors typically possess heightened ... ...

    Abstract During ageing, adult stem cells' regenerative properties decline, as they undergo replicative senescence and lose both their proliferative and differentiation capacities. In contrast, embryonic and foetal progenitors typically possess heightened proliferative capacities and manifest a more robust regenerative response upon injury and transplantation, despite undergoing many rounds of mitosis. How embryonic and foetal progenitors delay senescence and maintain their proliferative and differentiation capacities after numerous rounds of mitosis, remains unknown. It is also unclear if defined embryonic factors can rejuvenate adult progenitors to confer extended proliferative and differentiation capacities, without reprogramming their lineage-specific fates or inducing oncogenic transformation. Here, we report that a minimal combination of LIN28A, TERT, and sh-p53 (LTS), all of which are tightly regulated and play important roles during embryonic development, can delay senescence in adult muscle progenitors. LTS muscle progenitors showed an extended proliferative capacity, maintained a normal karyotype, underwent myogenesis normally, and did not manifest tumorigenesis nor aberrations in lineage differentiation, even in late passages. LTS treatment promoted self-renewal and rescued the pro-senescence phenotype of aged cachexia patients' muscle progenitors, and promoted their engraftment for skeletal muscle regeneration in vivo. When we examined the mechanistic basis for LIN28A's role in the LTS minimum combo, let-7 microRNA suppression could not fully explain how LIN28A promoted muscle progenitor self-renewal. Instead, LIN28A was promoting the translation of oxidative phosphorylation mRNAs in adult muscle progenitors to optimize mitochondrial reactive oxygen species (mtROS) and mitohormetic signalling. Optimized mtROS induced a variety of mitohormetic stress responses, including the hypoxic response for metabolic damage, the unfolded protein response for protein damage, and the p53 response for DNA damage. Perturbation of mtROS levels specifically abrogated the LIN28A-driven hypoxic response in Hypoxia Inducible Factor-1α (HIF1α) and glycolysis, and thus LTS progenitor self-renewal, without affecting normal or TS progenitors. Our findings connect embryonically regulated factors to mitohormesis and progenitor rejuvenation, with implications for ageing-related muscle degeneration.
    MeSH term(s) Rejuvenation ; Tumor Suppressor Protein p53/metabolism ; Cell Differentiation ; Adult Stem Cells/metabolism
    Chemical Substances Tumor Suppressor Protein p53
    Language English
    Publishing date 2023-05-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 1064202-x
    ISSN 1365-2184 ; 0008-8730 ; 0960-7722
    ISSN (online) 1365-2184
    ISSN 0008-8730 ; 0960-7722
    DOI 10.1111/cpr.13459
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  4. Article ; Online: Assessing the commutability of candidate reference materials for the harmonization of neurofilament light measurements in blood.

    Andreasson, Ulf / Gobom, Johan / Delatour, Vincent / Auclair, Guy / Noam, Yoav / Lee, Stephen / Wen, Jason / Jeromin, Andreas / Arslan, Burak / Maceski, Aleksandra / Willemse, Eline / Zetterberg, Henrik / Kuhle, Jens / Blennow, Kaj

    Clinical chemistry and laboratory medicine

    2023  Volume 61, Issue 7, Page(s) 1245–1254

    Abstract: Objectives: Neurofilament light chain (NfL) concentration in blood is a biomarker of neuro-axonal injury in the nervous system and there now exist several assays with high enough sensitivity to measure NfL in serum and plasma. There is a need for ... ...

    Abstract Objectives: Neurofilament light chain (NfL) concentration in blood is a biomarker of neuro-axonal injury in the nervous system and there now exist several assays with high enough sensitivity to measure NfL in serum and plasma. There is a need for harmonization with the goal of creating a certified reference material (CRM) for NfL and an early step in such an effort is to determine the best matrix for the CRM. This is done in a commutability study and here the results of the first one for NfL in blood is presented.
    Methods: Forty paired individual serum and plasma samples were analyzed for NfL on four different analytical platforms. Neat and differently spiked serum and plasma were evaluated for their suitability as a CRM using the difference in bias approach.
    Results: The correlation between the different platforms with regards to measured NfL concentrations were very high (Spearman's ρ≥0.96). Samples spiked with cerebrospinal fluid (CSF) showed higher commutability compared to samples spiked with recombinant human NfL protein and serum seems to be a better choice than plasma as the matrix for a CRM.
    Conclusions: The results from this first commutability study on NfL in serum/plasma showed that it is feasible to create a CRM for NfL in blood and that spiking should be done using CSF rather than with recombinant human NfL protein.
    MeSH term(s) Humans ; Intermediate Filaments ; Neurofilament Proteins ; Serum ; Plasma ; Reference Standards ; Biomarkers ; Recombinant Proteins
    Chemical Substances Neurofilament Proteins ; Biomarkers ; Recombinant Proteins
    Language English
    Publishing date 2023-01-31
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1418007-8
    ISSN 1437-4331 ; 1434-6621 ; 1437-8523
    ISSN (online) 1437-4331
    ISSN 1434-6621 ; 1437-8523
    DOI 10.1515/cclm-2022-1181
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Muscle Injuries Induce a Prostacyclin-PPARγ/PGC1a-FAO Spike That Boosts Regeneration.

    Luo, Lanfang / Chua, Yan-Jiang Benjamin / Liu, Taoyan / Liang, Kun / Chua, Min-Wen Jason / Ma, Wenwu / Goh, Jun-Wei / Wang, Yuefan / Su, Jiali / Ho, Ying Swan / Li, Chun-Wei / Liu, Ke Hui / Teh, Bin Tean / Yu, Kang / Shyh-Chang, Ng

    Advanced science (Weinheim, Baden-Wurttemberg, Germany)

    2023  Volume 10, Issue 21, Page(s) e2301519

    Abstract: It is well-known that muscle regeneration declines with aging, and aged muscles undergo degenerative atrophy or sarcopenia. While exercise and acute injury are both known to induce muscle regeneration, the molecular signals that help trigger muscle ... ...

    Abstract It is well-known that muscle regeneration declines with aging, and aged muscles undergo degenerative atrophy or sarcopenia. While exercise and acute injury are both known to induce muscle regeneration, the molecular signals that help trigger muscle regeneration have remained unclear. Here, mass spectrometry imaging (MSI) is used to show that injured muscles induce a specific subset of prostanoids during regeneration, including PGG1, PGD2, and the prostacyclin PGI2. The spike in prostacyclin promotes skeletal muscle regeneration via myoblasts, and declines with aging. Mechanistically, the prostacyclin spike promotes a spike in PPARγ/PGC1a signaling, which induces a spike in fatty acid oxidation (FAO) to control myogenesis. LC-MS/MS and MSI further confirm that an early FAO spike is associated with normal regeneration, but muscle FAO became dysregulated during aging. Functional experiments demonstrate that the prostacyclin-PPARγ/PGC1a-FAO spike is necessary and sufficient to promote both young and aged muscle regeneration, and that prostacyclin can synergize with PPARγ/PGC1a-FAO signaling to restore aged muscles' regeneration and physical function. Given that the post-injury prostacyclin-PPARγ-FAO spike can be modulated pharmacologically and via post-exercise nutrition, this work has implications for how prostacyclin-PPARγ-FAO might be fine-tuned to promote regeneration and treat muscle diseases of aging.
    MeSH term(s) Muscle, Skeletal ; PPAR gamma ; Epoprostenol ; Chromatography, Liquid ; Tandem Mass Spectrometry ; Prostaglandins I ; Regeneration/physiology
    Chemical Substances PPAR gamma ; Epoprostenol (DCR9Z582X0) ; Prostaglandins I
    Language English
    Publishing date 2023-05-04
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2808093-2
    ISSN 2198-3844 ; 2198-3844
    ISSN (online) 2198-3844
    ISSN 2198-3844
    DOI 10.1002/advs.202301519
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  6. Article ; Online: Characterization of convergent thickening, a major convergence force producing morphogenic movement in amphibians.

    Shook, David R / Wen, Jason W H / Rolo, Ana / O'Hanlon, Michael / Francica, Brian / Dobbins, Destiny / Skoglund, Paul / DeSimone, Douglas W / Winklbauer, Rudolf / Keller, Ray E

    eLife

    2022  Volume 11

    Abstract: The morphogenic process of convergent thickening (CT) was originally described as the mediolateral convergence and radial thickening of the explanted ventral involuting marginal zone (IMZ) ... ...

    Abstract The morphogenic process of convergent thickening (CT) was originally described as the mediolateral convergence and radial thickening of the explanted ventral involuting marginal zone (IMZ) of
    MeSH term(s) Animals ; Biological Evolution ; Cell Movement ; Gastrula ; Morphogenesis ; Xenopus laevis
    Language English
    Publishing date 2022-04-11
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2687154-3
    ISSN 2050-084X ; 2050-084X
    ISSN (online) 2050-084X
    ISSN 2050-084X
    DOI 10.7554/eLife.57642
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  7. Article ; Online: Potable Water Reuse through Advanced Membrane Technology.

    Tang, Chuyang Y / Yang, Zhe / Guo, Hao / Wen, Jason J / Nghiem, Long D / Cornelissen, Emile

    Environmental science & technology

    2018  Volume 52, Issue 18, Page(s) 10215–10223

    Abstract: Recycling water from municipal wastewater offers a reliable and sustainable solution to cities and regions facing shortage of water supply. Places including California and Singapore have developed advanced water reuse programs as an integral part of ... ...

    Abstract Recycling water from municipal wastewater offers a reliable and sustainable solution to cities and regions facing shortage of water supply. Places including California and Singapore have developed advanced water reuse programs as an integral part of their water management strategy. Membrane technology, particularly reverse osmosis, has been playing a key role in producing high quality recycled water. This feature paper highlights the current status and future perspectives of advanced membrane processes to meet potable water reuse. Recent advances in membrane materials and process configurations are presented and opportunities and challenges are identified in the context of water reuse.
    MeSH term(s) California ; Cities ; Drinking Water ; Waste Water ; Water Purification ; Water Supply
    Chemical Substances Drinking Water ; Waste Water
    Language English
    Publishing date 2018-09-06
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 1520-5851
    ISSN (online) 1520-5851
    DOI 10.1021/acs.est.8b00562
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  8. Article ; Online: Stem cell mitochondria during aging.

    Min-Wen, Jason Chua / Jun-Hao, Elwin Tan / Shyh-Chang, Ng

    Seminars in cell & developmental biology

    2016  Volume 52, Page(s) 110–118

    Abstract: Mitochondria are the central hubs of cellular metabolism, equipped with their own mitochondrial DNA (mtDNA) blueprints to direct part of the programming of mitochondrial oxidative metabolism and thus reactive oxygen species (ROS) levels. In stem cells, ... ...

    Abstract Mitochondria are the central hubs of cellular metabolism, equipped with their own mitochondrial DNA (mtDNA) blueprints to direct part of the programming of mitochondrial oxidative metabolism and thus reactive oxygen species (ROS) levels. In stem cells, many stem cell factors governing the intricate balance between self-renewal and differentiation have been found to directly regulate mitochondrial processes to control stem cell behaviors during tissue regeneration and aging. Moreover, numerous nutrient-sensitive signaling pathways controlling organismal longevity in an evolutionarily conserved fashion also influence stem cell-mediated tissue homeostasis during aging via regulation of stem cell mitochondria. At the genomic level, it has been demonstrated that heritable mtDNA mutations and variants affect mammalian stem cell homeostasis and influence the risk for human degenerative diseases during aging. Because such a multitude of stem cell factors and signaling pathways ultimately converge on the mitochondria as the primary mechanism to modulate cellular and organismal longevity, it would be most efficacious to develop technologies to therapeutically target and direct mitochondrial repair in stem cells, as a unified strategy to combat aging-related degenerative diseases in the future.
    MeSH term(s) Animals ; Cellular Senescence/genetics ; Cellular Senescence/physiology ; Humans ; Mitochondria/genetics ; Mitochondria/metabolism ; Mitochondria/physiology ; Oxidative Stress/physiology ; Reactive Oxygen Species/metabolism ; Stem Cells/cytology ; Stem Cells/metabolism ; Stem Cells/physiology
    Chemical Substances Reactive Oxygen Species
    Language English
    Publishing date 2016-04
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1312473-0
    ISSN 1096-3634 ; 1084-9521
    ISSN (online) 1096-3634
    ISSN 1084-9521
    DOI 10.1016/j.semcdb.2016.02.005
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  9. Article: Low Yield of Clinically Significant Injury With Head-To-Pelvis Computed Tomography in Blunt Trauma Evaluation.

    Murphy, Shelby P / Hawthorne, Noah / Haase, David / Chiku, Chika / Wen, Jason / Rodriguez, Robert M

    The Journal of emergency medicine

    2017  Volume 53, Issue 6, Page(s) 865–870

    Abstract: Background: Many trauma centers have adopted routine head-to-pelvis computed tomography (CT) imaging for the evaluation of adults with blunt trauma.: Objective: We sought to determine the yields of detecting clinically significant injuries (CSIs) ... ...

    Abstract Background: Many trauma centers have adopted routine head-to-pelvis computed tomography (CT) imaging for the evaluation of adults with blunt trauma.
    Objective: We sought to determine the yields of detecting clinically significant injuries (CSIs) with CT in >1 anatomic region.
    Methods: We conducted this observational cohort study of all trauma activation patients >14 years of age who received CT imaging during blunt trauma evaluation at a Level 1 trauma center from April to October 2014. Expert panels determined the clinical significance of head, neck, chest, abdomen, and pelvis injuries seen on CT. We calculated yields of CSI, defined as the number of patients with CSI divided by the total number of patients who underwent CT imaging. The 3 specified anatomic regions considered were head/neck, chest, and abdomen/pelvis.
    Results: The median age of 1236 patients who had CT was 48 years; 69% were male; 51.2% were admitted; and hospital mortality was 4.4%. Yields of CSI with 95% confidence intervals (CIs) were: head/neck region injury 11.3% (9.6-13.3%); chest region injury only 7.9% (6.0-10.4%); abdomen/pelvis region injury only 5.1% (3.7-7.0%); both head/neck and chest CSI 2.8% (1.7-4.5%); both head/neck and abdomen/pelvis CSI 1.6% (0.9-2.9%); and both chest and abdomen/pelvis CSI 1.1% (0.5-2.4%). The yield of CSI in all 3 anatomic regions with head-to-pelvis CT was 0.6% (0.2-1.7%), and 76.7% (68.8-83.1%) of CSIs occurred in isolation.
    Conclusions: During multiple anatomic region CT imagng for adult blunt trauma evaluation, the yield for CSI in >1 region is low. In low-risk populations, selective CT imaging of anatomic regions (instead of reflexive head-to-pelvis CT imaging) may be more appropriate.
    MeSH term(s) Abdominal Injuries/diagnosis ; Abdominal Injuries/epidemiology ; Adult ; Aged ; Clinical Decision-Making/methods ; Cohort Studies ; Craniocerebral Trauma/diagnosis ; Craniocerebral Trauma/epidemiology ; Female ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Thoracic Injuries/diagnosis ; Thoracic Injuries/epidemiology ; Tomography, X-Ray Computed/methods ; Tomography, X-Ray Computed/standards ; Tomography, X-Ray Computed/statistics & numerical data ; Trauma Centers/statistics & numerical data
    Language English
    Publishing date 2017-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 605559-x
    ISSN 0736-4679
    ISSN 0736-4679
    DOI 10.1016/j.jemermed.2017.08.036
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  10. Article ; Online: Blunt Trauma Abdominal and Pelvic Computed Tomography Has Low Yield for Injuries in More Than One Anatomic Region.

    Rodriguez, Robert M / Hawthorne, Noah / Murphy, Shelby P / Theus, Marcus / Haase, David / Chuku, Chika / Wen, Jason

    The western journal of emergency medicine

    2018  Volume 19, Issue 5, Page(s) 768–773

    Abstract: Introduction: Most trauma centers order abdominal and pelvic computed tomography (CT) as an automatically paired CT for adult blunt trauma evaluation. However, excessive CT utilization adds risks of excessive exposure to ionizing radiation, the need to ... ...

    Abstract Introduction: Most trauma centers order abdominal and pelvic computed tomography (CT) as an automatically paired CT for adult blunt trauma evaluation. However, excessive CT utilization adds risks of excessive exposure to ionizing radiation, the need to work up incidental findings (leading to unnecessary and invasive tests), and greater costs. Examining a cohort of adult blunt trauma patients that received paired abdominal and pelvic (A/P) CT, we sought to determine the diagnostic yield of clinically significant injuries (CSI) in the following: 1) the abdomen alone; 2) the pelvis alone; 3) the lumbosacral spine alone; and 4) more than one of these anatomic regions concomitantly.
    Methods: In this retrospective study, we reviewed the imaging and hospital course of a consecutive sample of blunt trauma activation patients older than 14 years of age who received paired A/P CT during their blunt trauma assessments at an urban Level I trauma center from April through October 2014. Categorization of CSI was determined according to an a priori, expert panel-derived classification scheme.
    Results: The median age of the 689 patients who had A/P CT was 48 years old; 68.1% were male; 64.0% were admitted, and hospital mortality was 3.6%. CSI yields were as follows: abdomen 2.2% (95% confidence interval [CI] [1.3-3.6%]); pelvis 2.9% (95% CI [1.9-4.4%]); lumbosacral spine 0.6% (95% CI [0.2-1.5%]); both abdomen and pelvis 0.3% (95% CI [0.1-1.1%]); both the abdomen and lumbosacral spine 0.6% (0.2-1.5%); both the pelvis and lumbosacral spine 0.1% (0.0-0.8%); all three regions - abdomen, pelvis and lumbosacral spine - 0.1% (0.0-0.8%).
    Conclusion: Automatic pairing of A/P CT has very low diagnostic yield for CSI in both the abdomen and pelvis. These data suggest a role for selective CT imaging protocols that image these regions individually instead of automatically as a pair.
    MeSH term(s) Abdominal Injuries/diagnostic imaging ; Female ; Humans ; Lumbosacral Region/diagnostic imaging ; Lumbosacral Region/injuries ; Male ; Middle Aged ; Pelvis/diagnostic imaging ; Pelvis/injuries ; Retrospective Studies ; Tomography, X-Ray Computed/statistics & numerical data ; Trauma Centers ; Wounds, Nonpenetrating/diagnosis
    Language English
    Publishing date 2018-07-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2375700-0
    ISSN 1936-9018 ; 1936-9018
    ISSN (online) 1936-9018
    ISSN 1936-9018
    DOI 10.5811/westjem.2018.6.37646
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